JPH0868342A - Cooling device - Google Patents

Abstract

PURPOSE: To perform effective heat-exchange through contact of gas with ice for a long time without inflow of a moisture content by providing a cooling chamber in and out of which gas flows through an intake duct and cooling equipment to effect icing of the interior of the cooling chamber through a refrigerant. CONSTITUTION: A cooling fin 2 is mounted in a state to make contact with the wall surface of the interior of a cooling chamber 1. Further, a circulation piping 4 is disposed to the back of the cooling fin 2 through the external wall surface of the cooling chamber 1, and a refrigerant is circulated from cooling equipment 3. Further, a circulation piping 4 is covered with a cover 5 to prevent escape of cold air. By circulation of a refrigerant through the circulation piping 4, the interior of the cooling chamber 1 is cooled by using a refrigerant for both a sensible heat and a latent heat and ice 6 is produced in the cooling chamber 1. In which case, by inflow of intake air of a gas turbine to the interior of the cooling chamber 1, intake air and the ice 6 are brought into contact with each other to effect heat-exchange. In this case, when a sensible heat is utilized, a refrigerant in the circulation piping 4 produces steam, which is returned to the cooling equipment 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device applied to an intake compressor of a gas turbine or an axial flow compressor for various purposes.

[0002]

2. Description of the Related Art In a conventional cooling device used for an intake compressor of a gas turbine or the like, water is sprayed on the intake air to cool it by utilizing latent heat due to evaporation of the water. .

[0003]

As described above, in the conventional cooling device used in the intake compressor of a gas turbine, the intake air is sprayed with water to utilize the latent heat due to the evaporation of water. However, according to such a method, the intake air carries moisture and the moisture flows into the gas turbine, which changes the wetness of the intake gas and reduces the performance of the gas turbine. Is causing it.

[0004]

SUMMARY OF THE INVENTION A cooling device according to the present invention is intended to solve the above-mentioned problems, and a cooling chamber in which gas flows in from above and flows out through an intake duct, and a cooling medium in the cooling chamber are provided. And a cooling facility for freezing via the.

Further, in the cooling device according to the present invention, a cooling chamber in which gas flows in from above through an intake duct and flows out upward, a refrigerant jacket installed in the cooling chamber, and a refrigerant is supplied to the refrigerant jacket. A cooling facility for freezing the inside of the cooling chamber via a refrigerant is provided.

Further, the cooling device according to the present invention includes a cooling chamber in which gas flows in from above through an intake duct and flows out upward, cooling equipment for freezing the inside of the cooling chamber through a refrigerant, and an outlet of the intake duct. And a swirling device for gas installed in.

Further, the cooling device according to the present invention includes a cooling chamber in which gas flows in from above through an intake duct and flows out upward, a cooling facility for icing the cooling chamber through a refrigerant, and the intake duct. And a bell mouth provided at the exit.

Further, the cooling device according to the present invention includes a cooling chamber in which gas flows in from above through an intake duct and flows out upward, a cooling facility for freezing the cooling chamber through a refrigerant, and the cooling chamber. The present invention is characterized in that it is provided with a partition wall that is provided to retain gas and a tubular gas extraction device that is provided on the partition wall.

Further, the cooling device according to the present invention includes a cooling chamber in which gas flows in from above through an intake duct and flows out upward, a cooling facility for icing the cooling chamber through a refrigerant, and the intake duct. It is characterized in that it is provided with a water spray nozzle provided inside or below.

Further, the cooling device according to the present invention includes a cooling chamber in which gas flows in from above through an intake duct and flows out upward, a cooling facility for icing the cooling chamber through a refrigerant, and the intake duct. It is characterized in that it has a sleeve provided at a lower end and movable up and down, and a gas bypass device that is provided so as to be capable of narrowing down the intake duct.

[0011]

That is, in the cooling device according to the present invention, the cooling equipment is configured to freeze through the refrigerant in the cooling chamber into which the gas flows from above through the intake duct and flows out upward. By cooling the cooling chamber, ice or a mixture of ice and water is generated in the cooling chamber. Since the gas flows into the cooling chamber, the gas and the ice do not come into contact with each other for a long time, and the water does not flow in, so that only the heat exchange is effectively performed.

Further, in the cooling device according to the present invention,
A cooling medium jacket is installed in the cooling chamber where gas flows in from above and flows out through the intake duct, and cooling medium is supplied with cooling medium so that the cooling system freezes through the cooling medium. By cooling the cooling chamber with the facility, ice or a mixture of ice and water is generated in the cooling chamber. Since the gas flows into the cooling chamber, the gas and the ice do not come into contact with each other for a long time, and the water does not flow in, so that only the heat exchange is effectively performed. The refrigerant jacket disposed in the cooling chamber evaporates the refrigerant in the refrigerant jacket to remove a large amount of latent heat of vaporization to enhance the cooling effect.

Further, in the cooling device according to the present invention,
The cooling equipment is designed to freeze the cooling chamber through the refrigerant in the cooling chamber where the gas flows in from above and flows out through the intake duct where the gas swirling device is installed at the outlet. By doing so, ice or a mixture of ice and water is generated in the cooling chamber. Since the gas flows into the cooling chamber, the gas and the ice do not come into contact with each other for a long time, and the water does not flow in, so that only the heat exchange is effectively performed. The gas flowing into the cooling chamber via the intake duct swirls by the gas swirling device attached to the outlet of the intake duct, and is given a force and direction to contact the icing surface of the cooling chamber and contact the icing surface for a longer time. Heat is exchanged.

In the cooling device according to the present invention,
Cooling equipment is designed to freeze inside the cooling chamber where gas flows in from above and flows out through an intake duct with a bell mouth at the outlet. This produces ice or a mixture of ice and water in the cooling chamber. Since the gas flows into the cooling chamber, the gas and the ice do not come into contact with each other for a long time, and the water does not flow in, so that only the heat exchange is effectively performed. The gas flowing into the cooling chamber via the intake duct is diffused to the inner peripheral portion of the cooling chamber by a bell mouth attached to the outlet of the intake duct, and is contacted with the icing surface for a longer time to perform heat exchange.

Further, in the cooling device according to the present invention,
A cooling wall is provided with a partition wall for retaining gas, and a cooling facility freezes the cooling chamber through which a gas flows from above and flows out through the intake duct. As a result, ice or a mixture of ice and water is generated in the cooling chamber. Since the gas flows into the cooling chamber, the gas and the ice do not come into contact with each other for a long time, and the water does not flow in, so that only the heat exchange is effectively performed. The gas flowing into the cooling chamber through the intake duct circulates in the cooling chamber due to the partition wall installed in the cooling chamber to generate a swirl or a stagnant region, which is in contact with the icing surface for a longer period of time to perform heat exchange.

Further, in the cooling device according to the present invention,
A cooling device is provided with a tubular gas extraction device, a partition wall for retaining gas is provided, and a cooling facility freezes a refrigerant in a cooling chamber into which gas flows from above through an intake duct and flows out upward. Therefore, ice or a mixture of ice and water is generated in the cooling chamber by cooling the cooling chamber with the cooling facility. Since the gas flows into the cooling chamber, the gas and the ice do not come into contact with each other for a long time, and the water does not flow in, so that only the heat exchange is effectively performed. The gas flowing into the cooling chamber through the intake duct circulates in the cooling chamber due to the partition wall installed in the cooling chamber to create a swirl or stagnant area, which is in contact with the icing surface for a longer period of time and heat-exchanged to form a cylinder Exhausted from the gas extractor in the form of a gas.

Further, in the cooling device according to the present invention,
The cooling equipment is designed to freeze inside the cooling room where gas flows in from above and flows out through an intake duct with a water spray nozzle inside or below, and the cooling equipment freezes the cooling room. By cooling the water, ice or a mixture of ice and water is generated in the cooling chamber. Since the gas flows into the cooling chamber, the gas and the ice do not come into contact with each other for a long time, and the water does not flow in, so that only the heat exchange is effectively performed. By arranging the water spray nozzle inside or below the air intake duct, freezing in the cooling chamber is promoted, and at the same time, minute ice particles are formed in the cooling chamber to cool the gas. Further, the sprayed water collects dust and freezes, so that the dust collecting effect is improved.

Further, in the cooling device according to the present invention,
A cooling system is provided with a movable sleeve at the lower end, and a gas bypass device is provided so that the gas bypass device can be narrowed down. Has become
By cooling the cooling chamber with the cooling facility, ice or a mixture of ice and water is generated in the cooling chamber. Since the gas flows into the cooling chamber, the gas and the ice do not come into contact with each other for a long time, and the water does not flow in, so that only the heat exchange is effectively performed. It is also possible to control the gas in a non-cooled state by bringing a sleeve movably provided up and down at the lower end of the intake duct into contact with the icing surface of the bottom of the cooling chamber and bypassing the entire amount of the gas by the bypass device.

[0019]

1 to 6 are explanatory views of a cooling device according to first to sixth embodiments of the present invention. In the figure, all of the cooling devices according to these examples are used for an intake compressor of a gas turbine, and the cooling equipment 3 is used to cool the intake air of the gas turbine. Is generated, and the ice 6 is cooled by bringing it into contact with the intake air of the gas turbine. That is, as shown in the figure, an intake chamber 18 is provided above, a cooling facility 3 is provided below the cooling chamber 1 via a vertical intake duct 8, and ice 6 or sherbet-like ice is provided in the cooling chamber 1. It produces a mixture of water and water. By allowing the intake air of the gas turbine to flow into the cooling chamber 1, the intake air and the ice 6 do not come into contact with each other for a long time, and only the heat exchange is effectively performed without the inflow of water. The inside of the cooling chamber 1 has a shape suitable for cooling and icing. Further, the cooling equipment 3 is equipped with equipment having the ability to generate a cold heat source, such as a refrigerator and an LNG vaporizer. The intake duct 8 is provided with a sleeve 15 which is movably controlled so as to maintain a required distance L between the ice 6 or a mixture of ice and water. The sleeve 15 is attached to the outside of the intake duct 8 or to the inside of the intake duct 8, and in any case, it has a structure that slides up and down by a drive device (not shown). When the sleeve 15 is attached to the inside of the intake duct 8, the intake surface is kept clean because the sliding surface is inside the intake duct 8, and the adhesion of the mixture of ice and water is small. Reference numeral 16 in the drawing is an intake port of the intake compressor of the gas turbine.

In FIG. 1, the cooling device according to the first embodiment is provided with cooling fins 2 in contact with a wall surface inside a cooling chamber 1 as shown in the drawing. A circulation pipe 4 is arranged on the back surface of the cooling fin 2 via a wall surface outside the cooling chamber 1 so that the refrigerant is circulated from the cooling equipment 3. The circulation pipe 4 is covered with a cover 5 to prevent cold air from escaping. Reference numeral 6 in the drawing is ice 6 frozen in the cooling chamber 1 or a sherbet-like mixture of ice and water.

In the present cooling device, by circulating the refrigerant in the circulation pipe 4, the refrigerant is used for both sensible heat and latent heat to cool the inside of the cooling chamber 1 and the ice 6 or the sherbet in the cooling chamber 1. Form a mixture of ice and water. By allowing the intake air of the gas turbine to flow into the cooling chamber 1, the intake air and the ice 6 do not come into contact with each other for a long time, and only the heat exchange is effectively performed without the inflow of water. When latent heat is used, the refrigerant in the return pipe of the circulation pipe 4 becomes vapor and returns to the cooling equipment 3. In addition, the cooling fins 2 and the cover 5 of the circulation pipe 4 which are arranged on the wall surface in the cooling chamber 1 and have an optimum size and shape allow the air to be effectively cooled and the generated ice 6 to be kept for a longer time. Hold it for effective heat exchange.

In the cooling device according to the second embodiment shown in FIG. 2, cooling fins 2 are attached to the inside of the cooling chamber 1 where ice is formed on the wall surface, and the rear surface of the cooling fin 2 is an external wall surface. The refrigerant jacket 7 is attached via the. The refrigerant jacket 7 is provided with a refrigerant circulation pipe 4 from the cooling equipment 3 so as to supply and recover the refrigerant.

In the present cooling device, the refrigerant jacket 7 disposed on the outer wall surface of the cooling chamber 1 evaporates a large amount of the refrigerant in the refrigerant jacket 7 to remove a large amount of latent heat due to vaporization to enhance the cooling effect. In this way, the cooling of the air and the holding of the ice 6 are effectively performed, and the same action and effect as those of the cooling device according to the first embodiment can be obtained.

Further, in FIG. 3, the cooling device according to the third embodiment is an intake swirling device having a plurality of blades at the lower end of an intake duct 8 which vertically penetrates the cooling chamber 1 as shown in the drawing. 9 is attached. Further, the partition wall 10 is attached if necessary. Reference numeral 3 in the figure
Is cooling equipment, reference numeral 4 is a refrigerant circulation pipe, and reference numeral 6 is frozen ice in the cooling chamber 1 or a mixture of sherbet-like ice and water.

In the present cooling device, the intake air swirling device 9 attached to the lower end portion of the intake duct 8 swirls the intake air to give a force and a direction for contacting the icing surface of the cooling chamber 1, and thus the streamline is further improved. Since the partition wall 10 that will stay on the ice surface for a longer period of time and that is arranged as necessary causes the intake air to keep swirling, the same operation and effect as the cooling device according to the first embodiment can be obtained. In addition to being able to do so, more sufficient cooling is performed. As a secondary effect, since the intake air stays on the icy surface for a long time, it can be expected that the dust in the intake air will be collected to some extent.

Further, in FIG. 4, the cooling device according to the fourth embodiment is provided with a bell mouth 11 at the lower end of an intake duct 8 which vertically penetrates the cooling chamber 1 as shown in FIG. A partition wall 10 is mounted in the cooling chamber 1. A cylindrical intake device 12 for intake air is attached to the partition wall 10 and serves as an outlet for swirling air intake, stagnant air intake, and the like.

In the present cooling device, the bell mouth 11 attached to the lower end portion of the intake duct 8 diffuses the intake air to the inner peripheral portion of the cooling chamber 1 so as to make long contact with the icing surface of the inner peripheral portion of the cooling chamber 1. As a result, the same operation and effect as those of the cooling device according to the first embodiment can be obtained, and the partition wall 10
The circulation is repeated, and a vortex flow or a stagnant region is generated to further cool the exhaust gas, and the exhaust gas is discharged from the cylindrical intake extraction device 12 provided in the partition wall 10 to the intake port 16 of the intake compressor of the gas turbine. Reach Further, the dust in the intake air is expected to have the same effect as that of the cooling device according to the third embodiment.

Further, in FIG. 5, the cooling apparatus according to the fifth embodiment is a water spray nozzle for spraying water downward to an intermediate portion in an intake duct 8 which vertically penetrates the cooling chamber 1 as shown in the drawing. 13 is attached, and a water spray nozzle 14 for vertically spraying water is attached at a position slightly higher than the ice 6 wall layer at the bottom of the cooling chamber 1. The nozzle holes of the water spray nozzles 13 and 14 are formed by selecting the optimum position and direction for freezing.

In the present cooling device, the water spray nozzles 13 and 14 are respectively arranged at a position slightly higher than the icing surface of the intermediate portion in the intake duct 8 and the bottom portion of the cooling chamber 1, so that the inner wall surface of the cooling chamber 1 is provided. Freezing is promoted, and the same operation and effect as the cooling device according to the first embodiment can be obtained, and at the same time, the intake air is cooled by forming fine ice particles in the flow path of the intake air of the cooling chamber 1. Further, the water spray from the water spray nozzles 13 and 14 enhances the dust collecting effect and freezes the ice, so that the dust collecting effect is also enhanced.

Further, in FIG. 6, the cooling apparatus according to the sixth embodiment has a structure in which a sleeve 15 which is movably controlled is attached inside the lower end of the intake duct 8 as shown in the drawing, and the intake duct 8 is also provided. An intake bypass device 17 having a movable throttle mechanism that communicates from the intake duct 8 to the intake port 16 of the intake compressor of the gas turbine is provided in the upper part of the above so that the temperature of the intake air can be adjusted.

This cooling device has a sleeve 15 which is movably controlled at the lower end of the intake duct 8, and communicates with the intake duct 8 and the intake port 16 of the intake compressor of the gas turbine above the intake duct 8. By providing the intake bypass device 17 having the movable throttle mechanism,
The same operation and effect as the cooling device according to the first embodiment can be obtained, and the intake air is divided into the cooling flow and the non-cooling flow of the bypass branch flow, and the intake air having a high temperature and the intake air having a low temperature can be freely proportioned. It can be mixed with, and the temperature of the intake air can be adjusted freely. Further, by allowing the movable controlled sleeve 15 at the lower end of the intake duct 8 to come into contact with the icing surface at the bottom of the cooling chamber 1 to bypass the entire amount of intake air, non-cooling control of intake air also becomes possible.

In a conventional cooling device used for an intake compressor of a gas turbine or the like, water is sprayed on the intake air to cool it by utilizing latent heat due to evaporation of water. According to such a method, the intake air conveys the water and the water flows into the gas turbine, which causes a change in the wetness of the intake air, which causes a decrease in the performance of the gas turbine. On the other hand, in the cooling device according to each of the above-described embodiments, the cooling equipment 3 is used to cool the intake air of the gas turbine to generate ice 6 or a sherbet-like mixture of ice and water. Is brought into contact with the intake air for cooling, and in the cooling device according to the first embodiment, the cooling fins 2 are arranged in contact with the side wall surfaces inside the cooling chamber 1 and the rear surface of the cooling fins 2 is cooled. A circulation pipe 4 that circulates the refrigerant from the cooling equipment 3 through the side wall surface outside the chamber 1 is arranged in a meandering manner, and the pipe is covered with a cover 5 to form ice 6 or sherbet-like ice and water in the cooling chamber 1. It is designed to generate a mixture with. In addition, the cooling device according to the second embodiment uses the meandering refrigerant circulation pipe 4
Instead of the above, a refrigerant jacket 7 is provided, and the refrigerant is supplied from the cooling equipment 3 to the refrigerant jacket 7 and collected to generate ice 6 or a mixture of ice and water in the cooling chamber 1. . In the cooling device according to the third embodiment, an intake air swirling device 9 having a plurality of blades is attached to the lower end portion of an intake duct 8 that vertically penetrates into the cooling chamber 1, and if necessary, the cooling chamber is installed. A partition wall 10 is attached to 1 to keep the swirling flow in the cooling chamber 1. Further, in the cooling device according to the fourth embodiment, a bell mouth 11 is provided at the lower end portion of the intake duct 8 vertically penetrating into the cooling chamber 1, the partition wall 10 is attached to the cooling chamber 1, and the partition wall 10 is further installed.
A suction intake device 12 having a cylindrical shape is attached to. In the cooling device according to the fifth embodiment, a water spray nozzle 13 for spraying water downward is arranged in the middle portion of the intake duct 8 vertically penetrated into the cooling chamber 1, and the bottom of the cooling chamber 1 is arranged. A water spray nozzle 14 for vertically spraying water is arranged at a position slightly higher than the ice wall layer. Further, the cooling device according to the sixth embodiment is provided with the intake duct 8
A sleeve 1 that is attached to the inner lower end and is movably controlled
5, an intake bypass device 17 is provided above the intake duct 8 and communicates with the intake duct 8 of the intake compressor of the gas turbine and has a movable throttle mechanism. The cooling device according to each of the embodiments having such a structure and function exhibits the respective characteristics, so that the time during which the intake air of the gas turbine and the ice are in contact with each other can be lengthened, and the intake air of the gas turbine of the ice 6 can be increased. The cooling is performed more effectively, and the temperature of the intake air can be controlled. By thus improving the cooling effect of the cooling device, it is possible to increase the pressure ratio of the intake compressor of the gas turbine and reduce the size of the intake compressor of the gas turbine. Further, since the intake air temperature of the gas turbine can be freely adjusted, the gas turbine can be operated in an optimum state for its load. As a result, the manufacturing cost of the gas turbine is reduced and the handleability is improved.

[0033]

The cooling device according to the present invention is configured as described above, and the gas and the ice are in contact with each other for a long time, and only the heat exchange is effectively performed without the inflow of water, so that the cooling of the gas is performed. Is effectively performed, and the temperature of the gas can be controlled.

[Brief description of drawings]

FIG. 1 (a) is a cross-sectional view of a cooling device according to a first embodiment of the present invention, and FIGS. 1 (b) and 1 (c) are cross-sectional views of relevant parts.

FIG. 2 is a cross-sectional view of essential parts of a cooling device according to a second embodiment of the present invention.

FIG. 3 (a) is a sectional view of a cooling device according to a third embodiment of the present invention, and FIG. 3 (b) is a sectional view of its essential part.

FIG. 4 is a sectional view of a cooling device according to a fourth embodiment of the present invention.

FIG. 5 is a sectional view of a cooling device according to a fifth embodiment of the present invention.

FIG. 6 is a sectional view of a cooling device according to a sixth embodiment of the present invention.

[Explanation of symbols]

 1 Cooling Chamber 2 Cooling Fin 3 Cooling Equipment 4 Refrigerant Circulation Pipe 5 Cover 6 Ice 7 Refrigerant Jacket 8 Intake Duct 9 Swirling Device 10 Partition Wall 11 Bellmouth 12 Intake Extractor 13 Water Spray Nozzle 14 Water Spray Nozzle 15 Movable Sleeve 16 Gas turbine intake compressor suction port 17 Intake bypass device

Claims (8)

[Claims] 1. A cooling device comprising: a cooling chamber in which gas flows in from above through an intake duct and flows out upward; and a cooling facility that freezes the cooling chamber through a refrigerant. 2. The cooling device according to claim 1, wherein a refrigerant jacket to which a refrigerant is supplied from the cooling facility is installed in the cooling chamber. 3. The cooling device according to claim 1, wherein a gas swirling device is installed at the outlet of the intake duct. 4. The cooling device according to claim 1, wherein a bell mouth is provided at the outlet of the intake duct. 5. The cooling device according to claim 1, wherein a partition wall for retaining gas is provided in the cooling chamber. 6. The cooling device according to claim 5, wherein the partition wall is provided with a tubular gas extraction device. 7. The cooling device according to claim 1, further comprising a water spray nozzle provided inside or below the intake duct. 8. The cooling device according to claim 1, wherein a vertically movable sleeve is provided at a lower end of the intake duct, and a gas bypass device is provided in the intake duct so as to be narrowed down.