WO2002073091A1 - Burner and gas turbine engine - Google Patents
Burner and gas turbine engine Download PDFInfo
- Publication number
- WO2002073091A1 WO2002073091A1 PCT/JP2002/002047 JP0202047W WO02073091A1 WO 2002073091 A1 WO2002073091 A1 WO 2002073091A1 JP 0202047 W JP0202047 W JP 0202047W WO 02073091 A1 WO02073091 A1 WO 02073091A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- supply
- fuel
- combustion
- oxygen
- containing gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/34—Feeding into different combustion zones
- F23R3/343—Pilot flames, i.e. fuel nozzles or injectors using only a very small proportion of the total fuel to insure continuous combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/10—Air inlet arrangements for primary air
- F23R3/12—Air inlet arrangements for primary air inducing a vortex
- F23R3/14—Air inlet arrangements for primary air inducing a vortex by using swirl vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/00015—Pilot burners specially adapted for low load or transient conditions, e.g. for increasing stability
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/14004—Special features of gas burners with radially extending gas distribution spokes
Definitions
- the present invention relates to a parner device provided with a plurality of combustion passages, in which fuel is supplied to an oxygen-containing gas flowing therein, and a mixture is supplied to a combustion section and burned, and a gas apparatus provided with the parner device.
- a parner device provided with a plurality of combustion passages, in which fuel is supplied to an oxygen-containing gas flowing therein, and a mixture is supplied to a combustion section and burned, and a gas apparatus provided with the parner device.
- the above-mentioned parner device is configured as a parner device for a gas turbine engine or a parner device for an incinerator in a cogeneration system.
- this parner device responds to the increase or decrease of the combustion load in the combustion section. It is necessary not only to adjust the flow rate of the fuel gas supplied to the main combustion flow path and the pilot combustion flow path, but also to adjust the flow rate of air (an example of oxygen-containing gas) supplied to each combustion flow path. is there.
- a fuel gas supply path to the main combustion flow path and a pilot combustion flow path have been conventionally used.
- a flow control valve was provided in each of the fuel gas supply paths to the passages, and the adjustment of the fuel gas flow to each combustion flow path was performed independently.
- the main combustion flow path and the pilot combustion flow path are reduced in accordance with a decrease in the combustion load relative to the rated combustion load.
- the supply flow rate of the fuel gas to the flow path for fuel combustion but it is necessary to increase the flow rate of supply to the flow path for pilot combustion with the decrease in the flow rate to maintain stable pilot combustion. . Therefore, in recent years, the supply flow rate of the fuel gas to the main combustion flow path and the pilot combustion flow path based on the combustion load, etc., can be easily adjusted.
- a parner device capable of increasing the distribution ratio of the supply flow rate (Japanese Patent Application Laid-Open No. 2000-202).
- This parner device includes a pilot combustion flow path for performing pilot combustion, and a main combustion flow path for performing main combustion as premixed lean combustion by surrounding the pilot combustion flow path in a cylindrical shape.
- it has a supply port for supplying fuel to the pilot combustion flow path and the main combustion flow path, and receives a part of the fuel supplied from the pilot combustion flow path and supplies the fuel to the main combustion path.
- It is provided with a supply path for supplying to the supply port of the use flow path. That is, in the pilot combustion flow path, a slit-shaped opening that is open to the pilot port combustion flow path is provided between the supply port and the receiving port of the supply path that opens to the pilot flow path. A part is formed.
- the open portion and the supply path are configured as a fluid element structure that controls the movement of the fuel by the flow of air in the pilot combustion flow path.
- the burner device when the burner device performs a high combustion load operation, most of the fuel supplied from the supply port to the open portion in the pipe combustion flow path is supplied from the receiving port by the fluid element structure described above.
- the operation can be performed by setting the total fuel supply flow rate large enough to be received in the passage and supplied to the supply port of the main combustion passage.
- the above-mentioned fluid element structure allows a large amount of fuel s to be supplied to the open portion in the pilot combustion flow path.
- the fuel is supplied to the pilot combustion flow path from the receiving port without being received in the supply path, and a small amount of fuel passes through the opening and is received in the supply path from the receiving port and supplied to the main combustion flow path.
- the operation can be performed by setting the total supply flow rate of the fuel to a certain degree.
- the parner device having the above-described fluid element structure has a small amount of fuel that passes through an opening such as a slit and is received by the supply path and reaches the main combustion flow path at a low combustion load. If it is too long, the air-fuel mixture supplied from the main combustion passage to the combustion section becomes excessively lean, and even if the pilot combustion is stable flame-holding combustion, it becomes impossible to ignite this excessively lean air-fuel mixture. It causes the emission of unburned components such as.
- the equivalence ratio is an amount that indicates the concentration characteristics of a mixture of fuel and air for combustion, and is defined as follows.
- Each concentration is represented by the number of moles, (fuel concentration / air concentration) st is the stoichiometric fuel-air ratio, and the stoichiometric fuel-air ratio is the fuel and the fuel necessary to completely oxidize the fuel. It is the concentration ratio with air. Disclosure of the invention
- the present invention has been made in view of the above circumstances, and provides a technique capable of suppressing emission of unburned components even in a low combustion load operation in a parner device having a fluid element structure. With the goal.
- a characteristic configuration of the parner device includes: a supply unit that supplies the fuel to each of the combustion flow paths; and one of the fuels supplied from the supply unit to one of the combustion flow paths. And a supply passage for supplying the fuel to the supply section of the combustion flow path in the next stage only when the flow rate of the fuel from the supply section is equal to or higher than a predetermined critical flow rate.
- a combustion load adjusting unit that adjusts a combustion load by adjusting a total supply flow rate of the fuel so that a flow rate of the fuel from the supply unit falls within a range including the predetermined critical flow rate. It is in the prepared point.
- the parner device having this characteristic configuration is provided with a plurality of combustion channels for performing pilot combustion, main combustion, and the like.
- the parner device is provided with a supply unit for supplying fuel to a plurality of combustion passages such as a pilot combustion passage or a main combustion passage, and further includes a pilot combustion passage. It is possible to receive a part of the fuel supplied from the supply unit into one of the combustion passages, and to transfer the received fuel to the supply unit of the next combustion passage such as the main combustion passage.
- a supply path for supplying is provided between each combustion channel.
- the whole portion or the entirety of the opening section opened to the combustion passage or a perforated plate or the like is provided between the supply section and the receiving section for receiving the fuel in the supply path in the preceding combustion passage.
- a flow path or the like which is partially covered and partially opened to the combustion flow path is formed.
- the supply section and the receiving section of the supply path use the flow of the air (an example of an oxygen-containing gas) flowing in the upstream flow path in the upstream opening section to adjust the fuel distribution ratio as described above.
- Perform the fluid element structure With this fluid element structure, it is easy to adjust the distribution ratio of fuel to the main combustion flow path and the pilot combustion flow path based on the combustion load, etc., and to reduce the total fuel supply flow rate. Accordingly, it is possible to realize a parner device capable of increasing a distribution ratio of a supply flow rate to a combustion flow path such as a pilot combustion flow path to a next combustion flow path such as a main combustion flow path.
- the fluid element structure of the parner device having this characteristic configuration, when the flow rate of the fuel supplied from the supply section to the combustion flow path provided with the receiving section of the supply path is less than the predetermined critical flow rate. At the same time, all of the supplied fuel is exposed to the flow of air in the combustion flow path and does not reach the supply path. On the other hand, when the flow rate of the fuel supplied from the supply section is equal to or higher than the predetermined critical flow rate, Only at a certain time, the shape and positional relationship of the supply unit and the receiving unit of the supply path or between them so that a part of the supplied fuel is received in the supply path and supplied to the next combustion passage. Is set.
- the above-mentioned predetermined critical flow rate means that even if fuel at the critical flow rate is supplied to a combustion flow path having a fluid element structure configured as a pilot combustion flow path or the like, it is formed in the combustion flow path.
- the flow rate is such that the air-fuel mixture does not exceed the upper combustion equivalent ratio.
- the combustion load adjusting means for adjusting the combustion load by adjusting the total supply flow rate of the fuel supplies the total supply flow rate of the fuel from the supply section to the combustion flow path having the receiving section of the supply path.
- the combustion load adjusting means of the present invention is characterized in that the total supply flow rate of the fuel is adjusted so that the flow rate of the fuel supplied from the supply section to the combustion flow path having the supply section receiving section is equal to or higher than the predetermined critical flow rate.
- high combustion load operation can be performed in which fuel is supplied also to the combustion passage of the next stage to perform main combustion and pilot combustion.
- the flow rate of the fuel from the supply section to the combustion flow path having the receiving section of the supply path is determined. The greater the is, the greater the proportion of fuel accepted in the supply channel.
- the distribution ratio of fuel to the next combustion flow path such as the main combustion flow path can be increased, and conversely, the fuel supply flow rate can be reduced.
- the more the fuel is distributed the smaller the distribution ratio of the fuel to the next stage combustion passage can be.
- this characteristic configuration realizes a parner device that can suppress the emission of unburned components during low combustion load operation and achieve high efficiency and low NOX over a wide combustion load range with a simple configuration. be able to.
- the parner device according to the present invention may include three or more combustion flow paths, and provide the supply path described above between each combustion flow path to provide a plurality of the fluid element structures. it can.
- the characteristic configuration of the parner device according to the present invention may further include, between the supply port serving as the supply section and the receiving port of the supply path where the fuel is received, wherein An opening is formed in the flow path, and the supply direction of the fuel from the supply unit to the opening is a direction intersecting the flow direction of the oxygen-containing gas in the opening.
- the supply port and the reception port are provided in the combustion flow path at predetermined intervals in a direction crossing the combustion flow path, and open to face each other. Are provided, and an open portion which is a gap such as a slit is formed between them. Further, the fuel is supplied from the supply port to the open section exposed to the combustion flow path in a direction crossing the flow direction of the air in the open section toward the inlet side. The fuel that has flowed out to the open portion is affected by the flow of air in the combustion passage that crosses the slit-shaped open portion. For example, if the flow rate of the fuel is less than the critical flow rate, the fuel flows out to the open portion.
- the open portion is slit-shaped along the direction of air flow, air can be stably passed through the open portion, and the effect of air on fuel that is going to pass through the open portion can be stabilized.
- the fuel can be stably distributed to each combustion flow path.
- the main combustion and pilot fuel during high load operation can be stabilized in a parner device that can suppress emission of unburned components during operation and achieve high efficiency and low NOX over a wide combustion load range.
- the supply direction of the fuel from the supply section to the opening section is such that the flow direction of the oxygen-containing gas in the combustion flow path is In the direction toward the upstream side of the direction.
- the fuel supply direction from the supply section to the opening section is determined by the opening direction.
- the fuel that flows out of the supply unit to the open part is received by the receiving part of the supply path because it is inclined more upstream in the air flow direction than in the direction perpendicular to the flow direction of the air flowing through the part.
- the flow rate of fuel flowing out of the supply section must be higher than the flow rate that passes through the open section against the direction of air flow.
- the predetermined critical flow rate which is the threshold value for the high combustion load operation
- the flow of fuel supplied to the combustion flow path into the receiving inlet side is well prevented, and the generation of unburned components by supplying a small amount of fuel to the downstream flow path is improved. Can be prevented.
- the supply unit of at least one of the supply paths may include the oxygen-containing gas of the combustion flow path. Is a supply port that opens toward the upstream side in the flow direction of the fluid.
- the supply section for supplying the fuel received in the supply path to the next-stage combustion flow path has a higher air flow than the direction orthogonal to the air flow direction of the combustion flow path. Since the supply port is open on the upstream side in the direction, the fuel flows out of the supply port in a direction opposite to the flow direction of the air. Therefore, in the combustion passage at the next stage, the fuel collides with the air, whereby the fuel is naturally stirred and mixed in the air, and the fuel can be dispersed in the cross-sectional direction of the passage.
- the supply port of the main combustion flow path and the like is configured as described above, so that the supply port has a small diameter and a large number of supply ports to uniformly supply the fuel.
- the opening area of the supply port of the supply path can be set to be large without having to make the supply port. Accordingly, the fuel supply in the supply path does not involve a large pressure loss, and the degree of mixing of the air-fuel mixture in the next-stage combustion flow path can be increased by utilizing the collision between the air and the fuel.
- the supply path is connected to the supply port side by the flow of air facing the supply port.
- Moderate pressure is applied in the direction of.
- the predetermined critical flow rate which is a threshold value for the load operation, can be set relatively high. Therefore, during low combustion load operation, the fuel supplied to the preceding combustion passage is appropriately prevented from flowing into the receiving portion of the supply passage, and a small amount of fuel is supplied to the next combustion passage. , The generation of unburned components can be satisfactorily prevented.
- the characteristic configuration of the parner device according to the present invention is the following in addition to the above-mentioned characteristic configuration.
- a part of the supply passage is open to an oxygen-containing gas supply unit to which the oxygen-containing gas is supplied.
- a part of the supply path is opened to the oxygen-containing gas supply section to which the air is supplied, so that the fuel flowing through the supply path has an appropriate concentration. Air can be taken into the air to make the concentration of the fuel supplied to the next stage combustion passage appropriate. Therefore, an air-fuel mixture having an appropriate equivalence ratio can be formed in each of the combustion channels, and the air-fuel mixture having an appropriate equivalence ratio that can suppress the generation of NOx and unburned components in the combustion section can be burned.
- an outlet of the supply path for blowing the fuel to the oxygen-containing gas supply unit is provided in the oxygen-containing gas supply unit.
- the opening is directed in the direction toward the upstream side in the flow direction of the oxygen-containing gas.
- the parner device in which a part of the supply path is opened to the oxygen-containing gas supply unit to which the oxygen-containing gas is supplied, as in the present characteristic configuration,
- the above-mentioned outlet which is connected to the receiving part side of the road is provided, and the outlet is directed to the upstream side of the air flow direction of the oxygen-containing gas supply part, that is, the flow of air is larger than the direction orthogonal to the flow direction of air.
- the receiving section located upstream of the outlet of the supply path the pressure applied to the outlet by the flow of air from the oxygen-containing gas supply section, Some resistance will be provided.
- the predetermined critical flow rate which is the threshold for the high-combustion-load operation, of the flow rate of the fuel supplied from the supply section of the preceding combustion passage toward the receiving section is set to a relatively high value.
- a characteristic configuration of a gas turbine engine according to the present invention is that the gas turbine engine includes a burner device having any one of the above-described characteristic configurations, and that the bin is rotated by kinetic energy of combustion exhaust gas discharged from the burner device. is there. That is, the burner device according to the present invention, which can suppress emission of unburned components during low combustion load operation and achieve high efficiency and low NOx in a wide combustion load range, is used alone for an incinerator. Although it can be used as a panner device for gas turbine engines, it is particularly effective to use it as a gas turbine engine parner device, as described in this characteristic configuration. x emissions can be suppressed, and operation can be performed over a wide operating load range while maintaining high efficiency. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a longitudinal sectional side view showing an embodiment of a parner device of the present invention
- FIG. 2 is a cross-sectional front view of the parner device shown in FIG. 1,
- FIG. 3 is an enlarged view of a fuel supply unit of the parner device shown in FIG. 1,
- FIG. 4 is a graph showing a relationship between a supply amount and a supply state of the fuel gas of the parner device shown in FIG. 1,
- FIG. 5 is an enlarged view of a fuel supply unit of a parner device according to another embodiment
- FIG. 6 is an enlarged view of a fuel supply unit of a parner device of another embodiment
- FIG. 7 is a diagram showing a flow path arrangement of a parner device of another embodiment
- FIG. 8 is a diagram showing a schematic configuration of a fuel supply means of the parner device shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- the parner device shown in FIG. 1 is used particularly in a gas turbine engine, and defines a fuel flow passage 30 through which a combustion gas G (an example of fuel), which is a natural gas city gas, is supplied through a flow control valve 21.
- Gas cylinder 1 an inner cylinder 2 that defines a second flow path A 2, which is a pipe combustion path surrounding the gas cylinder 1, and a main combustion flow that surrounds the inner cylinder 2.
- An outer cylinder 3 that defines a first flow path A1 as a path, and air supply means for supplying air A (an example of an oxygen-containing gas) to each of the first flow path A1 and the second flow path A2
- a fuel supply means 10 for supplying the fuel in the fuel flow path 30 to each of the first flow path A1 and the second flow path A2.
- This parner device The fuel gas G and the combustion air A are supplied to the combustion combustion flow path and the pilot combustion flow path, and the two are mixed in the flow path to form an air-fuel mixture. Combustion section).
- the gas cylinder 1, the inner cylinder 2, and the outer cylinder 3 are concentrically arranged as shown in FIG. That is, the first flow path A1, the second flow path A2, and the fuel flow path 30 are arranged in parallel.
- the air supply means is means for pushing air A into the first flow path A1 and the second flow path A2 from one end openings by a compressor, a blower or the like (not shown).
- the fuel supply means 10 is means for distributing and supplying the fuel gas G supplied to the fuel flow path 30 to the first flow path A1 and the second flow path A2.
- the fuel supply means 10 is provided between the first flow path A 1, the second flow path A 2, and the fuel flow path 30.
- the fuel gas G in 30 is configured to be distributed and supplied to the first flow path A 1 and the second flow path A 2. That is, the fuel supply means 10 is provided with a supply port 7 (for the supply section) for supplying the fuel gas G in the fuel flow path 30 to the open portion 9 of the second flow path A 2 which is one of the combustion flow paths.
- a receiving port 8 for receiving a part of the fuel gas G supplied to the opening 9 only when the flow rate of the fuel gas G supplied from the supply port 7 to the opening 9 is equal to or higher than a predetermined critical flow rate.
- a supply passage 6 at one end.
- the other end of the supply path 6 is formed as a supply port 5 (an example of a supply section) that opens to a first flow path A1, which is a combustion path at the next stage.
- the supply ports 7 and the supply paths 6 are dispersedly arranged at eight locations along the circumferential direction around the axis of the first flow path A1 and the second flow path A2.
- the predetermined critical flow rate is such that even if all of the fuel gas G at the critical flow rate is supplied to the first flow path A2, the air-fuel mixture formed in the second flow path A2 has a lower combustion equivalent ratio.
- the flow rate does not exceed the above.
- the opening 9 which is a feature of this fluid element structure is formed between a supply port ⁇ ⁇ ⁇ to which the fuel gas G is supplied and a receiving port 8 of a supply path 6 provided opposite to the supply port 7.
- the supply direction of the fuel gas G from the supply port 7 to the receiving port 8 side is orthogonal to the flow direction of the air A in the second flow path A2.
- the fuel gas G flows from the supply port 7 to the slit-shaped open part 9 exposed to the second flow path A2 toward the receiving port 8 side.
- the fuel gas G flowing out to the open portion 9 of the second flow passage A 2 is affected by the flow of the air A in the second flow passage A 2 passing through the open portion 9. Therefore, when the flow rate of the fuel gas G flowing out to the opening 9 of the gas (the flow rate here is proportional to the flow rate because the opening area of the supply port 7 is fixed) is less than the critical flow rate, All the fuel gas G flowing out to the opening 9 is exposed to the flow of the air A and supplied to the downstream side of the second flow path A2 without reaching the receiving port 8. On the other hand, when the flow rate of the fuel gas G flowing out to the opening 9 is equal to or more than the critical flow rate, a part of the fuel gas G flowing out to the opening 9 is supplied to the downstream side of the second flow path A2. However, a part of the fuel gas G reaches the receiving port 8 and is supplied from the supply port 5 to the first channel A1. '
- the burner load adjusting means 2 adjusts the total supply flow rate of the fuel gas G to the supply flow path 30 by the flow rate adjustment valve 21 to adjust the combustion load in the combustion section 15. 0 is provided.
- the combustion load adjusting means 20 controls the fuel gas G so that the flow rate of the fuel gas G supplied from the supply port 7 to the opening 9 becomes equal to or higher than the predetermined critical flow rate. It is configured to set the total supply flow rate, supply the fuel gas G to both the second flow path A2 and the first flow path, and perform both main combustion and pilot combustion in the combustion chamber 15 .
- the fuel supply means 10 having the fluid element structure configured as described above Accordingly, in the low combustion load operation, the generation of the unburned component can be suppressed because the excessive lean mixture is not formed in the first flow path A1.
- the fuel supply means 10 having a fluid element structure in a high combustion load operation, as the flow rate of the fuel gas G flowing from the supply port 7 to the opening 9 increases, in other words, the combustion load increases.
- the ratio of the fuel gas G supplied to the supply port 5 side that is, the first flow path A1 side through the opening 9 increases, and as a result, the total supply flow rate of the fuel gas G increases.
- the distribution ratio of the fuel gas G to the first side A1 for main combustion can be increased.
- the distribution ratio of fuel to the first passage A1 relative to the second passage A2 can be increased.
- the fuel gas G is used.
- the direction of supply of the fuel gas G from the supply port 7 to the opening 9 is set to be a direction inclining upstream with respect to the flow direction of the air A in the opening 9 so that the fuel gas G
- G can be made hard to flow in, and the value of the critical flow rate can be set higher to switch between low combustion load operation and high combustion load operation.
- the supply direction of the fuel gas G from the supply port 5 to the first flow path A1 is opposite to the flow direction of the air A in the first flow path A1.
- the supply port 5 is provided substantially at the center in the radial direction toward the axis of the first flow path.
- the fuel gas G supplied from the supply port 5 to the first flow path A1 against the flow of air A collides with the air A, and the diameter of the first flow path A 1 It can be distributed in the direction and the circumferential direction.
- the supply port 5 is formed so as to supply the fuel gas G in a direction toward the upstream side of the flow direction of the air A in the first flow path A 1, the flow of the air A facing the supply port 5 As a result, an appropriate pressure is applied in the direction from the supply port 5 of the supply path 6 to the receiving port 8, and an appropriate resistance can be given to the fuel gas G flowing from the opening 9 to the receiving port 8. Therefore, the threshold for switching to high combustion load operation in low combustion load operation is The predetermined critical flow rate can be set relatively high. In this way, by providing a moderate resistance to the fuel gas G flowing into the receiving port 8 from the opening 9, the fuel gas G flowing out to the opening 9 flows into the receiving port 8 side during the low combustion load operation. And the generation of unburned components can be satisfactorily prevented.
- a first slurryer 11 for applying a turning force to a mixture of the air A and the fuel gas G.
- a second slurry for imparting a swirling force to a mixture of the air A and the fuel gas G flowing into the second flow path A2. 1 2 is arranged.
- These slurs 11 and 12 can improve the flame holding property of the main combustion by the flame of the pilot combustion. That is, when the swirling force is applied by the second spooler 12 and the mixed air-fuel mixture is ignited by an igniter (not shown) at the same time, the air-fuel mixture is ignited and combusted, and pit-port combustion occurs. The flame of the pit combustion burns to the air-fuel mixture flowing through the first flow path A1, so that the air-fuel mixture ignites and burns, and main combustion occurs.
- an air stage ring for joining and mixing a part of the air-fuel mixture flowing through the first flow path A 1 with the air-fuel mixture flowing through the second flow path A 2. 1 3 are arranged.
- S is a strut that is distributed in the circumferential direction and makes the outer cylinder 3 support the inner cylinder 2.
- the fuel supply means 10 can be configured as follows. The details of the fuel supply means 10 will be described below.
- the fuel supply means 10 of the parner device shown in FIG. 5 distributes and supplies fuel to three combustion flow paths of a first flow path Al, a second flow path A2, and a third flow path A3. Is composed You.
- the fuel supply means 10 is configured such that the second supply paths 6a and 6b are provided between the third flow path A3 and the second flow path A2, and between the second flow path A2 and the first flow path.
- A2 is provided between the first supply passage A1 and the supply passage 6a. That is, in the third flow path A 3, a supply port 7 b for supplying the fuel gas G of the fuel flow path 30 to the open portion 9 b of the third flow path A 3, and an open portion from the supply port 7 b Only when the flow rate of the fuel gas G supplied to 9b is equal to or higher than a predetermined critical flow rate, the inlet 8b of the supply passage 6b for receiving a part of the fuel gas G supplied to the opening 9b is connected.
- a supply port 7a for supplying the fuel gas G received in the supply path 6b to the open portion 9a of the second flow path A2 Only when the flow rate of the fuel gas G supplied from the port 7a to the opening 9a is equal to or higher than a predetermined critical flow rate, is the supply path 6a for receiving a part of the fuel gas G supplied to the opening 9a.
- An entrance 8b is provided.
- the fuel supply means 10 configured as described above has a plurality of fluid element structures each including open parts 9a and 9b and respective supply paths 6a and 6b arranged in series. Things.
- the combustion load adjusting means 20 is operated by the flow control valve 21 so that the total amount of the fuel gas G supplied to the opening 9 b from the supply port 7 is less than a predetermined critical flow rate.
- the first low combustion load operation is performed by adjusting the supply flow rate, all of the fuel gas G supplied from the supply port 7 to the opening 9b is supplied to the third flow path A3. Further, the flow rate of the fuel gas G supplied from the supply port 7b to the opening 9b is equal to or higher than the predetermined first critical flow rate, and the fuel gas G is received by the supply path 6b and is supplied from the supply port 7a to the opening 9a.
- the fuel supplied to the opening 9b is opened. Part of the gas G flows into the receiving port 8b and is received in the supply path 6b, and all of the fuel gas G received in the supply path 6b is supplied from the supply port 7a to the second flow path A2. Is done. Further, the total supply flow rate of the fuel gas G is adjusted so that the flow rate of the fuel gas G received in the supply passage 6b and supplied from the supply port 7a to the opening 9a is equal to or higher than a predetermined critical flow rate. When high combustion load operation is performed, part of the fuel gas G supplied to the opening 9a flows into the receiving port 8a and is received in the supply path 6a, and the fuel received in the supply path 6a Gas G is supplied from the supply port 5 to the first flow path A1.
- the distribution ratio of the fuel gas G to the first passage A1 for the main combustion can be increased, and the total supply flow rate of the fuel gas G can be increased.
- the increase in other words, with the increase of the combustion load, the distribution ratio of the fuel gas G to the second flow path to the third flow path A3 and the distribution rate of the fuel gas G to the first flow path A1 to the second flow path A2
- the fuel distribution ratio can be increased. Therefore, in the high combustion load operation, when the combustion load is relatively low, while the pipe combustion in the second flow path A2 and the third flow path A3 is stabilized, the combustion load is relatively high.
- the fuel gas G can be uniformly supplied to the entire first flow path A1, second flow path A2, and third flow path A3 to achieve low NOx combustion using a lean premixed gas. .
- the supply path 6 is disposed so that the supply port 5 is inclined to the upstream side in the flow direction of the air A, and the supply port 7 a , 7 are formed so as to supply the fuel gas G in a direction toward the upstream side in the flow direction of the air A in the open portions 9a, 9b. Therefore, in order for the fuel gas G flowing out of the supply ports 7a , 7b to the open portions 9a, 9b to flow into the receiving ports 8a, 8b, the fuel gas G flowing out of the supply ports 7a, 7b is required.
- the flow rate of the gas G must be equal to or greater than the flow rate of the gas A passing through the openings 9a, 9b against the flow direction of the air A in the openings 9a, 9b.
- the critical flow can be set relatively high. Therefore, at the time of the first or second low combustion load operation, the open portion 9a or the open portion 9
- the flow of the fuel gas G supplied to b into the receiving port 8a or the receiving port 8b side is well prevented, and the generation of unburned components due to the small amount of fuel gas G supplied to the first flow path A1 is reduced. It can be prevented well.
- the parner device of the present invention can be provided with an air supply section 35 (an example of an oxygen-containing gas supply section) that takes in air A into the supply path 6b. Will be described.
- air supply section 35 an example of an oxygen-containing gas supply section
- the fuel supply means 10 of the parner device shown in FIG. 6 includes the first flow path Al, the second flow path A 2, and the third flow path similarly to the fuel supply mechanism 10 of the parner apparatus shown in FIG. It is configured to distribute and supply fuel to the three combustion passages of the passage A3.
- the supply paths 6a and 6b are configured as a fluid element structure.
- the fuel supply means 10 of this burner device is provided with the air supply section 35 between the receiving port 8b of the supply path 6b and the supply port 7a.
- air A is supplied by air supply means in the same manner as the first to third flow paths A1, A2, A3, and the fuel gas G incorporating the air A flows downstream through the opening 37. Flowing to the side.
- air A is taken into the supply path 6b so that the fuel gas G flowing through the supply path 6b has an appropriate concentration, and is supplied to the air supply section 3 of the supply path 6b.
- concentration of the fuel gas G supplied to the second flow path A2 and the first flow path A1 from the opening 9a and the supply port 5 on the downstream side in the flow direction of the fuel gas G of 5 is appropriate.
- the air supply unit 35 is connected to the upstream side of the flow direction of the fuel gas G of the supply passage 6 b, toward the upstream side in the flow direction of the air a in the air supply unit 35
- An outlet 36 is provided which is formed to supply fuel gas G in the direction.
- the predetermined first critical flow rate which is a threshold value for switching to the second low combustion load operation in the first low combustion load operation, is set to be relatively high. Can be.
- the burner device provided with three or more combustion flow paths as described above includes a fourth flow path A4 which is a pipe combustion flow path. And a so-called multi-panner having a plurality of main combustion passages, that is, a first passage A1, a second passage A2, and a third passage A3, which are arranged at regular intervals in the circumferential direction. .
- the fuel gas G is supplied only to the fourth flow path A4, and as shown in FIG. An operation is performed to make only the combustion state.
- the fuel flow path filled with dots is in a combustion state.
- a burner device sequentially increases the number of combustion passages for supplying the fuel gas G, as shown in FIG. 7 (b).
- a pair of third flow paths A3 arranged symmetrically with respect to each other is set to a combustion state, and as shown in FIG.
- a pair of second flow paths A2 arranged symmetrically with respect to each other are brought into a combustion state, and as shown in FIG.
- a pair of first flow paths A1 which are arranged point-symmetrically to each other, is a rated operation in which the combustion flow path is set to a combustion state.
- Such a burner device can be realized by the fuel supply means 110 having a fluid element structure, and the structure will be described with reference to FIG.
- the fuel supply means 110 shown in FIG. 8 distributes and supplies the fuel gas G in the fuel flow path 119 to the upstream side of each of the flow paths A 1, A 2, A 3, A 4 and mixes the mixture. It is configured to form
- the fluid element structure in the fuel supply means 110 is provided between adjacent flow paths in FIG. 8, and a part of the fuel gas G supplied to one flow path is supplied to the next flow path side. It is configured to be distributed to.
- the fuel gas G in the fuel flow path 1 19 is divided into two systems,
- the water is supplied to the upstream side of the road A4 through two supply ports 107c (an example of a supply unit).
- the fuel flow path 1 19 is divided into 0.2 systems because the six flow paths A 1, A 2, and A 3 to which the fuel gas G is distributed and supplied are arranged point-symmetrically with respect to each other. This is for splitting and supplying the fuel gas G to each of the two groups, each of which includes two channels.
- the air-fuel mixture formed by distributing and supplying the fuel gas G in the fluid element structure may be divided into two flow paths and supplied.
- the fuel supply means 110 includes three supply passages 106a, 106b, and 106c formed between the first passage A1 and the second passage A2, and the second passage A2.
- the third flow path A3 and the third flow path A3 are provided between the third flow path A3 and the fourth flow path A4, respectively.
- Supply port 105 is formed.
- a supply port 107 c for supplying the fuel gas G of the fuel flow path 119 to the open portion 109 c of the fourth flow path A 4 is provided.
- Supply channel 106 that receives part of fuel gas G supplied to open part 109c only when the flow rate of fuel gas G supplied from port 107c to open part 109c is equal to or higher than a predetermined critical flow rate
- the c entrance 1 08 c is provided.
- a supply port 107b for supplying the fuel gas G received in the supply path 106c to the opening 109b of the third flow path A3 is provided.
- the fuel supply means 110 configured in this way includes a plurality of open portions 109a, 109b, and 109c and respective supply passages 106a, 106b, and 106c. It has a fluid element structure arranged in series.
- the combustion load adjustment means 120 is supplied from the supply port 107 c to the open part 109 c by the flow control valve 121.
- the fuel gas supplied from the supply port 107 c to the open portion 109 c is adjusted. All of G is supplied to the fourth flow path A4, and only the fourth flow path A4 is in a combustion state as shown in FIG. 7 (a).
- the total supply flow rate of the fuel gas G is adjusted so as to be equal to or more than the second critical flow rate and less than the third critical flow rate, a part of the fuel gas G supplied to the open portion 109 b becomes a receiving port. All of the fuel gas G flowing into the supply passage 106 b and flowing into the supply passage 106 b is supplied to the second passage A 2 from the supply opening 107 a. As shown in FIG. 7 (c), only the fourth flow path A4, the third flow path A3, and the second flow path A2 are in a combustion state.
- the configuration in which the plurality of combustion flow paths of the pilot combustion flow path and the main combustion flow path are arranged in the radial direction or the circumferential direction has been described.
- the arrangement state can be appropriately determined in consideration of flame holding properties and low NOx properties.
- the structure of the fluid element provided between the respective combustion channels can be designed in consideration of the distribution order and distribution ratio with respect to the increase in combustion load.
- air A is used as an oxygen-containing gas for combustion of fuel gas G.
- oxygen-containing gas for combustion other than air for example, oxygen It is possible to use an oxygen-enriched gas or the like whose component content is higher than air.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/471,117 US20040068973A1 (en) | 2001-03-09 | 2002-03-05 | Burner and gas turbine engine |
| EP02701734A EP1367329A4 (en) | 2001-03-09 | 2002-03-05 | BURNER AND GAS TURBINE |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001-067062 | 2001-03-09 | ||
| JP2001067062 | 2001-03-09 | ||
| JP2001242212A JP4683787B2 (ja) | 2001-03-09 | 2001-08-09 | バーナ装置及びガスタービンエンジン |
| JP2001-242212 | 2001-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002073091A1 true WO2002073091A1 (en) | 2002-09-19 |
Family
ID=26610962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/002047 Ceased WO2002073091A1 (en) | 2001-03-09 | 2002-03-05 | Burner and gas turbine engine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20040068973A1 (ja) |
| EP (1) | EP1367329A4 (ja) |
| JP (1) | JP4683787B2 (ja) |
| TW (1) | TW558599B (ja) |
| WO (1) | WO2002073091A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1482244A1 (en) * | 2003-05-31 | 2004-12-01 | Aqua-Chem, Inc. | Counterflow fuel injection nozzle in a burner-boiler system |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005283003A (ja) * | 2004-03-30 | 2005-10-13 | Osaka Gas Co Ltd | 燃焼装置及びガスタービンエンジン |
| JP2005283002A (ja) * | 2004-03-30 | 2005-10-13 | Osaka Gas Co Ltd | 燃焼装置及びガスタービンエンジン |
| JP4626251B2 (ja) * | 2004-10-06 | 2011-02-02 | 株式会社日立製作所 | 燃焼器及び燃焼器の燃焼方法 |
| JP4015656B2 (ja) * | 2004-11-17 | 2007-11-28 | 三菱重工業株式会社 | ガスタービン燃焼器 |
| GB2429516B (en) * | 2005-08-27 | 2010-12-29 | Siemens Ind Turbomachinery Ltd | An apparatus for modifying the content of a gaseous fuel |
| US8037688B2 (en) * | 2006-09-26 | 2011-10-18 | United Technologies Corporation | Method for control of thermoacoustic instabilities in a combustor |
| KR100809084B1 (ko) * | 2007-01-15 | 2008-03-03 | 공상식 | 가스 유량을 조절하는 폐자식 스핀들 |
| US20080280238A1 (en) * | 2007-05-07 | 2008-11-13 | Caterpillar Inc. | Low swirl injector and method for low-nox combustor |
| US8220270B2 (en) * | 2008-10-31 | 2012-07-17 | General Electric Company | Method and apparatus for affecting a recirculation zone in a cross flow |
| US20110023494A1 (en) * | 2009-07-28 | 2011-02-03 | General Electric Company | Gas turbine burner |
| EP2282122A1 (de) * | 2009-08-03 | 2011-02-09 | Siemens Aktiengesellschaft | Stabilisierung der Flamme eines Vormischbrenners |
| US8661825B2 (en) * | 2010-12-17 | 2014-03-04 | General Electric Company | Pegless secondary fuel nozzle including a unitary fuel injection manifold |
| EP3036482B1 (en) * | 2013-08-20 | 2020-10-21 | United Technologies Corporation | Dual fuel nozzle system and apparatus |
| ES2870975T3 (es) * | 2016-01-15 | 2021-10-28 | Siemens Energy Global Gmbh & Co Kg | Cámara de combustión para una turbina de gas |
| DE102018114870B3 (de) * | 2018-06-20 | 2019-11-28 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Brennersystem und Verfahren zur Erzeugung von Heißgas in einer Gasturbinenanlage |
| US12215866B2 (en) | 2022-02-18 | 2025-02-04 | General Electric Company | Combustor for a turbine engine having a fuel-air mixer including a set of mixing passages |
| US12060997B1 (en) * | 2023-02-02 | 2024-08-13 | Pratt & Whitney Canada Corp. | Combustor with distributed air and fuel mixing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0828874A (ja) * | 1994-07-20 | 1996-02-02 | Hitachi Ltd | ガスタービン燃焼器及びガスタービン |
| JP2000161670A (ja) * | 1998-11-26 | 2000-06-16 | Hitachi Ltd | ガスタービン燃焼器およびその運用方法 |
| JP2001235119A (ja) * | 2000-02-18 | 2001-08-31 | Osaka Gas Co Ltd | バーナ装置 |
| JP2001235120A (ja) * | 2000-02-18 | 2001-08-31 | Osaka Gas Co Ltd | 流体混合器とそれを用いたバーナ装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5822992A (en) * | 1995-10-19 | 1998-10-20 | General Electric Company | Low emissions combustor premixer |
| US5930999A (en) * | 1997-07-23 | 1999-08-03 | General Electric Company | Fuel injector and multi-swirler carburetor assembly |
| JP3817625B2 (ja) * | 1998-09-03 | 2006-09-06 | 独立行政法人 宇宙航空研究開発機構 | バーナ装置 |
| US6339923B1 (en) * | 1998-10-09 | 2002-01-22 | General Electric Company | Fuel air mixer for a radial dome in a gas turbine engine combustor |
-
2001
- 2001-08-09 JP JP2001242212A patent/JP4683787B2/ja not_active Expired - Fee Related
-
2002
- 2002-03-05 WO PCT/JP2002/002047 patent/WO2002073091A1/ja not_active Ceased
- 2002-03-05 EP EP02701734A patent/EP1367329A4/en not_active Withdrawn
- 2002-03-05 TW TW091104035A patent/TW558599B/zh active
- 2002-03-05 US US10/471,117 patent/US20040068973A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0828874A (ja) * | 1994-07-20 | 1996-02-02 | Hitachi Ltd | ガスタービン燃焼器及びガスタービン |
| JP2000161670A (ja) * | 1998-11-26 | 2000-06-16 | Hitachi Ltd | ガスタービン燃焼器およびその運用方法 |
| JP2001235119A (ja) * | 2000-02-18 | 2001-08-31 | Osaka Gas Co Ltd | バーナ装置 |
| JP2001235120A (ja) * | 2000-02-18 | 2001-08-31 | Osaka Gas Co Ltd | 流体混合器とそれを用いたバーナ装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1367329A4 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1482244A1 (en) * | 2003-05-31 | 2004-12-01 | Aqua-Chem, Inc. | Counterflow fuel injection nozzle in a burner-boiler system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002333138A (ja) | 2002-11-22 |
| US20040068973A1 (en) | 2004-04-15 |
| JP4683787B2 (ja) | 2011-05-18 |
| TW558599B (en) | 2003-10-21 |
| EP1367329A4 (en) | 2006-07-19 |
| EP1367329A1 (en) | 2003-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2002073091A1 (en) | Burner and gas turbine engine | |
| JP3628747B2 (ja) | タービン用燃焼器において拡散モード燃焼及び予混合モード燃焼を行うノズル並びにタービン用燃焼器を運転する方法 | |
| CN102378878B (zh) | 旋流器、燃烧腔以及具有改善的涡流的燃气涡轮机 | |
| US8579214B2 (en) | Swirler vane | |
| EP1216385B1 (en) | Variable premix-lean burn combustor | |
| AU729407B2 (en) | An improved pulverized coal burner | |
| US8316644B2 (en) | Burner having swirler with corrugated downstream wall sections | |
| JP4191298B2 (ja) | 燃焼装置のための燃料/空気混合装置 | |
| US5016443A (en) | Fuel-air premixing device for a gas turbine | |
| US20020043067A1 (en) | Gas turbine combustion system and combustion control method therefor | |
| WO2001044720A1 (en) | Fluid distributor, burner device, gas turbine engine, and cogeneration system | |
| JPH06323543A (ja) | ガスタービン及び燃料の燃焼方法 | |
| US20080280238A1 (en) | Low swirl injector and method for low-nox combustor | |
| JPWO2001044720A1 (ja) | 流体分配器及びバーナ装置及びガスタービンエンジン及びコジェネレーションシステム | |
| US20060183069A1 (en) | Premix burner | |
| CN1938549B (zh) | 用于燃烧室的运行的多级燃烧器装置以及用于运行该多级燃烧器装置的方法 | |
| JP2005326144A (ja) | 燃料噴射装置および燃料噴射装置の設計方法 | |
| JP2008249245A (ja) | 低NOxガスバーナ | |
| WO1998025084A1 (en) | DIFFUSION AND PREMIX PILOT BURNER FOR LOW NOx COMBUSTOR | |
| JPH09159143A (ja) | マルチバーナ式燃焼器の燃料供給システム及び該燃料供給システムを持つガスタービン | |
| JP4222962B2 (ja) | バーナ装置及びガスタービンエンジン | |
| RU2230257C2 (ru) | Устройство для сжигания газообразного топлива | |
| RU2197685C1 (ru) | Горелка | |
| JPH0452414A (ja) | 燃焼用空気供給装置 | |
| JP2622478B2 (ja) | 濃淡燃焼バーナ |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 2002701734 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 10471117 Country of ref document: US |
|
| WWP | Wipo information: published in national office |
Ref document number: 2002701734 Country of ref document: EP |
|
| REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: 2002701734 Country of ref document: EP |