WO2001059264A1 - Steam turbine and power generating equipment - Google Patents
Steam turbine and power generating equipment Download PDFInfo
- Publication number
- WO2001059264A1 WO2001059264A1 PCT/JP2001/000939 JP0100939W WO0159264A1 WO 2001059264 A1 WO2001059264 A1 WO 2001059264A1 JP 0100939 W JP0100939 W JP 0100939W WO 0159264 A1 WO0159264 A1 WO 0159264A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steam
- pressure
- cabin
- bin
- stage
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/26—Double casings; Measures against temperature strain in casings
Definitions
- the present invention relates to a steam cabin structure used for thermal power generation equipment such as a compound power generation plant, and a power generation facility using the steam power bin.
- a number of combined cycle power plants combining gas evening bins and steam turbines have been constructed.
- improvement in steam conditions generally leads directly to improvement in power plant efficiency.
- the steam conditions of the steam bins be high pressure and high temperature.
- the casing 110 of the high-pressure section 5 of the conventional combined cycle power generation steam bin usually has a single casing structure.
- the wall thickness required for pressure resistance increases in a single-chamber structure.
- the steam turbine that follows the conventional single cabin structure mainly increases the thickness of the cabin.
- the pressure stress and thermal stress in the steam turbine cabin increase, causing damage due to thermal fatigue or high-temperature low-cycle fatigue during the operation of the steam bin, which hinders the operation of the turbine.
- the 12Cr steel and 9Cr steel have a smaller linear expansion coefficient than the low alloy steel represented by the conventional CrMoV steel
- the 12Cr steel and 9Cr steel are The thermal expansion of the cabin, which is made up of the airbag, becomes smaller than before, and the expansion difference is larger than before (the difference in the amount of thermal expansion between the cabin and the mouth when the thrust bearing position is the reference position in the turbine axial direction). ) Occurs.
- a so-called axial rubbing phenomenon occurs in which there is insufficient clearance in the axial direction of the turbine between the rotating body, the mouth part and the stationary part, and the casing attached part. This causes a problem that large shaft vibrations that cause trouble occur.
- the temperature difference between the inner and outer surfaces of the cabin is changed to T1 in the single-chamber structure by 0.7T1 in the outer cabin, for example, by changing the temperature difference between the inner and outer surfaces of the single cabin structure to T1 in the single-chamber structure. It can be shared in the interior cabin at a rate of about 0.3T1. Therefore, the steady thermal stress of the inner cabin of the double cabin structure is about 0.7 times the thermal stress of the single cabin, and the thermal stress of the external cabin of the double cabin structure is 0% of the thermal stress of the single cabin. It will be about three times. In this way, by forming the high-pressure section in a double casing structure, it is possible to greatly reduce the steady thermal stress in the casing.
- the evening bin is assumed to be a thin cylinder for simplicity
- the radius of the inner cabin of the double cabin is approximately 0.9a, and the radius of the outer cabin is approximately 1.5a, where a is the radius of the single cabin.
- the pressure stress in the circumferential direction of the cabin 1 and the pressure stress in the circumferential direction of the outer case of the double case 2, and the circumferential direction of the inner case of the double case Assuming that the pressure stress is 3, the wall thickness in a single cabin is ax P 1/1, the outer cabin thickness of a double cabin is approximately 0.45XP 1/2, and the double cabin.
- the thickness of the interior cabin is approximately 0.63a xP1 / 3.
- the thickness of the inner cabin of the double cabin structure is about 0.63 times the thickness of the single cabin, This means that the outer casing of the heavy cabin structure should have a thickness of about 0.45 times the thickness of the single cabin.
- the thickness of the internal cabin is 0.9 times the thickness of the single cabin.
- the thickness of the outer cabin of the double cabin structure may be about 0.65 times the thickness of the single cabin. That is, it is possible to reduce the pressure stress while reducing the thickness.
- the double casing structure has an effect that the steady thermal stress can be reduced and the pressure stress can also be reduced as compared with the single casing structure.
- the interior surface of the cabin is directly exposed to main steam and the exterior surface of the cabin is exposed to the atmosphere via a heat insulating material.
- the interior temperature is divided into two stages, the inner compartment and the outer compartment,
- the temperature of the steam acting on the surface is also divided into two stages, the inner case and the outer case, so the temperature difference between the inner and outer surfaces of the inner case and the outer case of the double case is different from the inner and outer surfaces of the single case. It will be much smaller than the temperature difference.
- the magnitude of the unsteady thermal stress and unsteady thermal deformation in the cabin is generally proportional to the temperature difference between the outside and the inside of the cabin.Therefore, the double cabin structure has unsteady thermal stress and unsteady heat compared to the single cabin structure. Thermal deformation can be kept small.
- the thermal conductivity of the steel material used for the cabin material of the steam turbine is small, if the cabin thickness is large, it takes time for the temperature (calorific value) of the cabin surface to be transmitted to the cabin outer surface. Although the temperature difference between the inside and outside of the cabin becomes large, the double cabin structure, in which the thickness of each cabin can be made thinner than that of a single cabin, causes excessive transient thermal stress and transient thermal deformation. It is effective in suppressing.
- the dual cabin structure can reduce the difference in ambient temperature inside and outside the cabin and the wall thickness of the cabin at the same time as the single cabin structure. This makes it possible to suppress the occurrence of excessive unsteady thermal stress and unsteady thermal deformation when the bin is started up.
- the double casing structure can reduce the pressure stress, the steady thermal stress, the transient thermal stress, and the transient thermal deformation compared to the single casing structure. It has the effect of preventing problems such as creep damage, thermal fatigue damage or high-temperature low-cycle fatigue damage, and steam leakage from the horizontal joint of the vehicle compartment.
- the high-pressure complete double cabin structure which is the same as the conventional high-capacity steam one-bottle bin, which has a double cabin from the first high-pressure stage 7 to the high-pressure exhaust stage 8, is an external cabin. Is greatly increased, resulting in a disadvantage of increased costs.
- the high-pressure part full double cabin structure is complex for regular inspections and other maintenance of steam bins, and the cabin water that connects the upper and lower compartments Because the number of flat joint fastening bolts increases significantly, the disassembly and assembly of the turbine is complicated, and the work takes a long time. Therefore, the cost of periodic inspections is increased, and the period of the periodic inspections is prolonged, resulting in a disadvantage that the operability of the power generation equipment is deteriorated and the power generation cost is increased.
- the difference in axial extension between the rotatable shaft 10 as a rotating body and the vehicle interior accessory 11 as a stationary component is a single-cabin structure.
- the clearance in the axial direction of the turbine becomes extremely large and the gap in the axial direction of the turbine becomes insufficient.
- axial vibration called rubbing vibration occurs due to axial contact in the axial direction. The risk of inconvenience that the reliability of the turbine is significantly reduced due to excessive vibration and impairing the operation of the turbine is greatly increased.
- the gap in the axial direction of the shaft sealing part must be considerably larger than in the single-chamber structure due to the large difference in elongation.
- the performance of the evening bin deteriorates due to an increase in the amount of leaked steam in the section.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a high-temperature and high-temperature strength problem which is a problem in advancing the high-pressure and high-temperature steam conditions in a steam bin and to prevent steam leakage. At the same time as overcoming the challenges of An object of the present invention is to simultaneously solve the problems of preventing the occurrence of a rubbing phenomenon and minimizing the amount of steam leaking from a shaft sealing portion.
- the present invention provides a double cabin comprising an internal cabin and an external cabin, corresponding to a range from a high pressure first stage of a high pressure section to a predetermined paragraph before a high pressure final stage.
- the present invention provides an axial flow steam pin having a single-chamber structure for a vehicle room corresponding to a range from the paragraph after the predetermined paragraph to the final high-pressure stage.
- the main steam pressure 1 2 Okgf / cm 2 or more, the main steam temperature is 5 5 0 ° C or more, and the rated output of the steam evening one bin 1 2 0 MW or more It can be suitably applied to steam evening bins.
- the steam pressure of the steam passage is to be at least 9 O kg cm 2 or more ranges or the steam temperature of the steam passage is at least 4 8 0 ° C over a range of double casing structure, Is preferred.
- the present invention also provides an axial flow type steam bin in which steam discharged from the high-pressure section is reheated in a reheater and supplied to the medium-pressure section.
- the cabin corresponding to the range up to the predetermined paragraph before the high-pressure final stage has a double cabin structure including the internal compartment and the external compartment, and the range from the paragraph after the predetermined stage to the high-pressure final stage is set.
- the corresponding cabin has a single-chamber structure, and the cabin corresponding to the range from the first stage of the intermediate pressure to the predetermined paragraph before the final stage of the intermediate pressure is composed of the inner compartment and the outer compartment.
- the double-cabin structure is used, and the cabin corresponding to the range from the paragraph after the predetermined stage to the intermediate-pressure final stage has a single-chamber structure, and the high-pressure section and the internal compartment of the intermediate-pressure section are A steam bin is provided which is integrally formed.
- Application of such a high pressure section and a partial double casing structure to the intermediate pressure, the main steam pressure 1 2 O kgf / cm 2 or more, the main steam temperature 5 5 0 ° C or higher, steam evening one bottle It is preferable to apply the present invention to a steam bin having an output of 120 MW or more and a reheat steam temperature of 550 ° C or more.
- the compartments of the high-pressure section and the medium-pressure section in which the steam temperature of the steam passage section is at least 480 ° C. or more have a double compartment structure.
- a low alloy steel such as a Cr M0V steel containing 1 to 3% of Cr is used as a material of the outer casing, and a material of the inner casing is used.
- a Cr steel containing 8 to 10% of Cr or a Cr steel containing 9.5 to 12.5% of Cr is preferable to use.
- a low alloy steel such as a rMoV steel containing 1 to 3% of 0.
- the ratio Dr / Dt between the blade root diameter Dr of the moving blade and the blade tip diameter Dt of the moving blade It is preferable that 0.85 ⁇ Dr / Dt ⁇ 0.95.
- the steam bin with partial double cabin structure described above is suitable as a steam turbine for combined cycle power generation equipment, or as a steam turbine for thermal power plants not combined with gas turbines or for industrial power generation equipment. It can be used for BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a view showing a first embodiment of a steam turbine according to the present invention, and is a longitudinal sectional view of main parts of a high-pressure part and an intermediate-pressure part.
- Figure 2 is a graph showing the temperature dependence of the yield strength and 10 5 hours rupture strength of the steam evening one bottle casing material.
- Fig. 3 is an explanatory diagram showing the configuration of a steam turbine and a generator in a conventional thermal power plant.
- FIGS. 4A and 4B are explanatory diagrams showing the configuration of a gas bin, a steam bin, and a generator in a single-shaft combined cycle power plant.
- Figure 5 is an illustration of the blade root of the bucket and the tip of the bucket.
- FIG. 6 is an explanatory diagram showing a change in stress of a rotating portion of a steam turbine due to Dr / Dt.
- FIG. 7 is a view showing a second embodiment of the steam turbine according to the present invention, and is a longitudinal sectional view of a main part of a high-pressure part and an intermediate-pressure part.
- Fig. 8 is a vertical cross-sectional view of the main parts of the high-pressure and medium-pressure sections of a conventional structure using a single cabin structure.
- Fig. 9 is a conceptual vertical cross-sectional view of the main parts of the high-pressure part and the medium-pressure part of an extended steam turbine according to the prior art, in which a high-pressure part complete double cabin structure is applied following the conventional method. Description of the preferred embodiment
- FIG. 1 is a longitudinal sectional view of a main part of a high-pressure part 5 and a medium-pressure part 6 of a first embodiment of a steam bin according to the present invention.
- the illustration of the low-pressure section of the steam turbine is omitted.
- Each of the high-pressure section 5 and the intermediate-pressure section 6 is composed of a plurality of paragraphs each including a combination of a stationary blade 3 and a moving blade 4.
- the rotor blades 4 of the high-pressure section 5 and the medium-pressure section 6 are mounted on a common port shaft 10.
- the main steam flows into the high-pressure section 5 from the inflow section 5a, enters the high-pressure first stage 7, passes through the stages, sequentially exits the high-pressure exhaust section 8, and flows out of the outflow section 5b.
- the steam flowing out of the outflow section 5b flows into the medium pressure section 6 from the inflow section 6a, enters the first stage 12 of the medium pressure, sequentially passes through the stages, exits the middle pressure exhaust stage 13 and flows out. Spills from part 6b.
- reference numeral 9 denotes a shaft sealing portion
- reference numeral 11 denotes a vehicle compartment accessory part.
- the cabin of the high-pressure section 5 of the steam bin is from the first high-pressure stage 7 to a predetermined paragraph before the high-pressure exhaust stage 8 (in the case of FIG.
- the area corresponding to the range (from 7 to the 4th stage) has a double cabin structure composed of an internal cabin 1 and an external cabin 2.
- the sections following the above-mentioned predetermined paragraph comprises only the outer casing 2. It has a single cabin structure. As described above, the cabin of the high-pressure unit 5 has a “partial double cabin structure”. As shown in FIG. 1, the outer casing 2 is integrally formed in a range from a first high-pressure stage 7 to a high-pressure exhaust stage 8.
- the steam turbine with the high-pressure section 5 having a “partial double-cabin structure” has a main steam pressure of 12 Okgf / cm 2 or more, a main steam temperature of 550 ° C or more, and a rated steam turbine. It is suitably applied to those having an output of 120 MW or more.
- Cabin of the high pressure section 5, or the steam pressure in the steam passage is duplicated at least 9 O kgf / cm 2 or more ranges, or, the steam temperature of the steam passage is at least 4 8 0 ° C or more ranges It is preferable to duplicate.
- the reason for setting the duplication range as described above is as follows. Generally, the material used for the cabin of the steam jar will become severely creeping when the temperature exceeds approximately 480 ° C, and a design that takes into account the decrease in high-temperature strength due to creep will be required. Stresses Sunawa Chi vertical axis S, when showing the yield strength and 1 0 5 hour rupture strength of the material with the temperature T on the horizontal axis, as shown in FIG. 2, ⁇ Ka is as dashed B- B 'by temperature change (indicating intersection at P) 1 0 5 hour rupture strength changes as a solid line A- a 'with temperature, these lines which approximately intersects at around 4 8 0 ° C.
- the Prandtl number of water vapor has a large effect on the heat transfer coefficient.
- the number of Brauntl in the steam passage is one.
- the pressure at a steam temperature of about 480 ° C is about 9 O kgf / cm 2 .
- duplication steam pressure of the steam passage is either duplicating the cabin of at least 9 O kgf / cm 2 or more ranges, or the passenger compartment of the steam temperature of the steam passage is at least 4 8 0 ° C or more ranges
- the thermal stress of the cabin in the high temperature part and the difference in the axial expansion in the evening bin with sufficient margin within the design allowable range, and to reduce the thermal deformation of the cabin sufficiently. Therefore, it is possible to provide a safe and highly reliable steam bin which is free from damage and steam leak that may hinder the continuation of operation.
- the interior of the steam turbine high-pressure section which is exposed to high-pressure and high-temperature steam, is duplicated to suppress excessive thermal stress and excessive thermal deformation, and at the same time, to prevent excessive turbine axial elongation difference from occurring.
- the steam conditions of the steam turbine were raised to high pressure and high temperature.
- Overcoming the issues of ensuring high-temperature strength and reducing the amount of leaked steam, which are problems in the process furthermore, prevents the occurrence of rubbing phenomenon by suppressing the occurrence of excessive expansion difference, and impedes operation due to vibration problems. It is possible to provide a safe and efficient steam bin and to suppress the increase in production cost and operation cost.
- the material of the external cabin 2 is represented by a CrMo steel containing 1 to 3% Cr. 9 Cr steel containing Cr from 8 to 10% or 12 Cr containing 9.5 to 12.5% Cr as the material of the inner casing 1 using low alloy steel It is preferable to use
- the use of a partially double cabin structure enables the thermal stress and thermal deformation of the cabin to be significantly reduced as compared with a single cabin structure, so Cr is contained at 1-3%.
- the outer casing 2 and the inner casing 1 may be formed by using a low alloy steel typified by CrMoV steel. In this case, it is necessary to give due consideration to the design, but it is possible to minimize the cost of tapping and minimize the increase in the axial elongation difference, thus reducing the amount of steam leaking from the shaft seal. It can be minimized and axial rubbing can be prevented more effectively.
- the ratio Dr / Dt of t is preferably 0.85, Dr / Dt, 0.95.
- the diameter of the rotor shaft 14 in the high-pressure section of a steam turbine bin for a combined cycle plant is larger than that of a conventional steam turbine for thermal power generation having the same capacity. It is for the following reasons.
- the steam turbine 15 and the generator 16 shown in Fig. 3 are generally used, and the rotor shaft 14 of the high pressure section of the steam turbine is connected to the high pressure section of the steam bin. Since only the generated shaft torque cp is transmitted, it is not necessary to increase the diameter of the rotor shaft 14 in the high-pressure section.
- the high pressure section of the steam turbine is exposed to high temperatures.
- the paragraphs within the double structure of the high-pressure section are often high-temperature sections of approximately 480 ° C or higher, the same phenomenon as that shown in Fig. 2 also appears for blades and rotor materials.
- the problem of reduced strength becomes prominent, and if the blade length is increased unnecessarily, the probability of causing damage to the blade or mouth-to-wheel during operation of the steam bin due to cleave damage etc. It is getting higher rapidly.
- the steam bin is designed so that the local stress at the rotor blade implanted portion 411 is almost the same as the stress at the central portion of the mouth-shaft shaft 114. Since the blade root diameter Dr of the rotor blade of the steam bin is determined by matching the performance of the bin with manufacturing technology, a relatively large output of 120 MW or more as the object of the present invention is obtained. In a steam turbine of the shape, the value does not change significantly from turbine to turbine.
- both the local stress at the blade implant and the circumferential stress at the center of the mouth shaft decrease as Dr ZDt increases.
- the local stress at the rotor blade implant decreases sharply, the circumferential stress at the center of the Rhosha shaft decreases gradually, and at high Dr / Dt, the change is almost flat.
- a carp 62 showing the relationship between Dr ZD t and the local stress at the blade implanted portion shows the relationship between Dr / D t and the circumferential stress at the center of the rotor shaft.
- the position at which the curve 61 intersects is, from experience, where Dr / Dt is approximately 0.85, and when Dr / Dt is less than this, the stress exceeds the strength limit, making it difficult to achieve. You. Therefore, it is necessary that Dr / Dt be at least 0.85 and satisfy Dr / Dt. This is important because of the high temperature strength of the evening bin rotating part.
- the ratio between the blade root diameter D r of the moving blade and the blade tip diameter D t of the moving blade at the step where the high-pressure section has a partial double cabin structure is described.
- D r / D t so as to satisfy 0.85 ⁇ D rZD t ⁇ 0.95
- the performance of the turbine can be maintained at a high level, and the stress in the high-temperature portion of the rotating portion of the bottle in the evening exceeds the strength limit, causing damage to the rotor blade or rotor wheel during turbine operation, resulting in breakage.
- the effect is that it is possible to provide safe and reliable steam bottles that never reach.
- FIG. 7 is a longitudinal sectional view of a main part of the high-pressure unit 5 and the intermediate-pressure unit 6 of the second embodiment of the steam bin according to the present invention.
- the illustration of the low-pressure section of the steam bin is omitted.
- the same parts as those in the first embodiment are denoted by the same reference numerals, and overlapping description will be omitted.
- the steam turbine of the present embodiment has a reheating cycle in which steam discharged from the outlet 5b of the high-pressure section 5 is reheated by a reheater (not shown) and then introduced into the inlet 6a of the medium-pressure section 6. It is a bottle in the evening.
- main steam pressure is 1 2 O kg cm 2 or more, the main steam temperature 5 5 0 ° C or higher, the rated output of the steam evening one bin 1 2 0 MW or more, the reheat steam temperature Is suitably applied to those having a temperature of 550 ° C. or higher.
- the cabin of the high-pressure section 5 of the steam bin is provided with an arbitrary part before the high-pressure first stage 7 to the high-pressure exhaust stage 8.
- the section up to the paragraph (in this case, the first stage of high pressure to the fourth stage of high pressure) has a double cabin structure consisting of the inner casing 101 and the outer casing 102, and thereafter.
- the range corresponding to the paragraph (1) is a single cabin structure consisting of only the external cabin 102.
- the cabin of the intermediate pressure section 6 also extends from the first stage 12 of the intermediate pressure to any paragraph before the final stage 13 of the intermediate pressure (in this case, the first stage of the intermediate pressure 1).
- From medium pressure (Up to the second stage) has a double cabin structure
- the subsequent paragraphs, that is, the range from the second stage of medium pressure to the last stage 13 of medium pressure have a single cabin structure.
- both the high-pressure section 5 and the intermediate-pressure section 6 have a partial cabin structure.
- the internal casing 101 is integrally formed in a range from a high-pressure fourth stage to an intermediate-pressure second stage, that is, the entirety thereof. That is, the internal casing 102 is a high / medium pressure integrated internal casing that covers both the high-pressure section 5 and the medium-pressure section 6. Similarly, the outer casing 102 is a high-medium pressure integrated outer casing that covers both the high-pressure section 5 and the medium-pressure section 6.
- the steam introduced into the intermediate pressure section 6 also has a high temperature and a high pressure, and therefore, the intermediate pressure section also employs a partial double cabin structure. Therefore, the present embodiment also has substantially the same operation and effect as the first embodiment.
- the range of the medium pressure section 6 to be duplicated may be determined based on the same concept as described in the first embodiment, and the steam pressure in the steam passage section is at least 9 O kgf / It is preferable to double the range of cm 2 or more, or to double the range where the steam temperature of the steam passage is at least 480 ° C. or more.
- the materials of the inner casing 101 and the outer casing 102 may be determined based on the same concept as described in the first embodiment.
- 9 Cr containing 8 to 10% Cr as the material of the inner casing 101 using a low alloy steel typified by Cr MoV steel containing 1 to 3% of Cr r Base steel or 12 Cr base steel containing 9.5 to 12.5% of Cr may be used, or Cr in both the inner casing 101 and the outer casing 102 may be 1 to 1.
- a low alloy steel typified by a 3% CrMoV steel may be used.
- the steam turbine having the above-described partial double cabin structure (which may be any of the structures of the first embodiment and the second embodiment) is used for a combined-cycle power generation facility including a gas turbine and a steam bin. It can be suitably used as a steam turbine.
- the combined cycle power generation system can also be applied to a steam cooling system that uses steam for cooling the gas turbine.
- a steam turbine with a partial double cabin structure can also be applied as a steam turbine for thermal power generation plants that are not combined with a gas turbine or for industrial thermal power generation equipment.
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01902831A EP1264966B1 (en) | 2000-02-10 | 2001-02-09 | Steam turbine and power generating equipment |
| DE60140796T DE60140796D1 (de) | 2000-02-10 | 2001-02-09 | Dampfturbine und kraftmaschine |
| US10/203,411 US6790002B2 (en) | 2000-02-10 | 2001-02-09 | Steam turbine and power generating equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000033530A JP2001221012A (ja) | 2000-02-10 | 2000-02-10 | 蒸気タービンおよび発電設備 |
| JP2000-33530 | 2000-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001059264A1 true WO2001059264A1 (en) | 2001-08-16 |
Family
ID=18558002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2001/000939 Ceased WO2001059264A1 (en) | 2000-02-10 | 2001-02-09 | Steam turbine and power generating equipment |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6790002B2 (ja) |
| EP (1) | EP1264966B1 (ja) |
| JP (1) | JP2001221012A (ja) |
| CN (1) | CN1297731C (ja) |
| DE (1) | DE60140796D1 (ja) |
| WO (1) | WO2001059264A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11286810B2 (en) | 2016-08-23 | 2022-03-29 | Siemens Energy Global GmbH & Co. KG | Outflow housing of a steam turbine |
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| JP2004245187A (ja) * | 2003-02-17 | 2004-09-02 | Toshiba Corp | ターボ機械の非接触シール装置およびこれを用いた蒸気タービン設備 |
| EP1559872A1 (de) * | 2004-01-30 | 2005-08-03 | Siemens Aktiengesellschaft | Strömungsmaschine |
| EP1744032A1 (de) * | 2005-07-15 | 2007-01-17 | Siemens Aktiengesellschaft | Gas- und Dampfturbinenanlage sowie Verfahren zu deren Betrieb |
| US20070065273A1 (en) * | 2005-09-22 | 2007-03-22 | General Electric Company | Methods and apparatus for double flow turbine first stage cooling |
| EP2333245A1 (en) * | 2009-12-01 | 2011-06-15 | Siemens Aktiengesellschaft | Rotor assembly for a reheat steam turbine |
| US20120189460A1 (en) * | 2011-01-21 | 2012-07-26 | General Electric Company | Welded Rotor, a Steam Turbine having a Welded Rotor and a Method for Producing a Welded Rotor |
| US9194246B2 (en) | 2011-09-23 | 2015-11-24 | General Electric Company | Steam turbine LP casing cylindrical struts between stages |
| US8926273B2 (en) * | 2012-01-31 | 2015-01-06 | General Electric Company | Steam turbine with single shell casing, drum rotor, and individual nozzle rings |
| US9046004B2 (en) * | 2012-02-28 | 2015-06-02 | General Electric Company | Compression sleeve seal |
| US20130323522A1 (en) * | 2012-06-05 | 2013-12-05 | General Electric Company | Cast superalloy pressure containment vessel |
| JP6180007B2 (ja) | 2014-01-17 | 2017-08-16 | ゼネラル・エレクトリック・カンパニイ | Cmcシュラウド用cmcハンガースリーブ |
| CN106761973B (zh) * | 2016-12-22 | 2019-06-18 | 东方电气集团东方汽轮机有限公司 | 一种汽轮机中压单层焊接汽缸结构 |
| CN114776391A (zh) * | 2022-03-31 | 2022-07-22 | 哈尔滨汽轮机厂有限责任公司 | 一种采用多级小焓降叶片的60mw反动式高温高压汽轮机 |
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| JPS61123802U (ja) * | 1985-01-23 | 1986-08-04 | ||
| JPS62251408A (ja) * | 1986-04-24 | 1987-11-02 | Toshiba Corp | 蒸気タ−ビンケ−シング |
| JPH10169414A (ja) * | 1996-11-04 | 1998-06-23 | Asea Brown Boveri Ag | ガスタービン冷却空気冷却器としての強制貫流蒸気発生装置を備えた複合動力プラント |
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| FR383059A (fr) * | 1907-03-26 | 1908-02-24 | Bbc Brown Boveri & Cie | Turbine à vapeur à plusieurs étages |
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| GB230844A (en) * | 1924-03-13 | 1925-04-09 | Escher Wyss Maschf Ag | Single casing, multi-stage steam or gas turbine |
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| DE1812493A1 (de) * | 1968-12-03 | 1970-08-06 | Siemens Ag | Mehrschalige Axialturbine,vorzugsweise Dampfturbine fuer hohe Druecke und Temperaturen |
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| DE3420389A1 (de) * | 1984-06-01 | 1985-12-05 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | Doppelmantelgehaeuse von turbinen |
| JPS61123802A (ja) | 1984-11-20 | 1986-06-11 | Matsushita Electric Ind Co Ltd | 炭酸ガスレ−ザ用全反射鏡 |
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2001
- 2001-02-09 DE DE60140796T patent/DE60140796D1/de not_active Expired - Lifetime
- 2001-02-09 US US10/203,411 patent/US6790002B2/en not_active Expired - Lifetime
- 2001-02-09 EP EP01902831A patent/EP1264966B1/en not_active Expired - Lifetime
- 2001-02-09 WO PCT/JP2001/000939 patent/WO2001059264A1/ja not_active Ceased
- 2001-02-12 CN CNB01103761XA patent/CN1297731C/zh not_active Expired - Lifetime
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| JPH10169414A (ja) * | 1996-11-04 | 1998-06-23 | Asea Brown Boveri Ag | ガスタービン冷却空気冷却器としての強制貫流蒸気発生装置を備えた複合動力プラント |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11286810B2 (en) | 2016-08-23 | 2022-03-29 | Siemens Energy Global GmbH & Co. KG | Outflow housing of a steam turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1297731C (zh) | 2007-01-31 |
| US6790002B2 (en) | 2004-09-14 |
| EP1264966B1 (en) | 2009-12-16 |
| JP2001221012A (ja) | 2001-08-17 |
| DE60140796D1 (de) | 2010-01-28 |
| EP1264966A1 (en) | 2002-12-11 |
| US20030143069A1 (en) | 2003-07-31 |
| EP1264966A4 (en) | 2005-10-26 |
| CN1312426A (zh) | 2001-09-12 |
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