CN114635798A - Spray cooling device for reducing inlet air temperature of gas turbine compressor - Google Patents
Spray cooling device for reducing inlet air temperature of gas turbine compressor Download PDFInfo
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- CN114635798A CN114635798A CN202011482883.6A CN202011482883A CN114635798A CN 114635798 A CN114635798 A CN 114635798A CN 202011482883 A CN202011482883 A CN 202011482883A CN 114635798 A CN114635798 A CN 114635798A
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- compressed air
- cold water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
- F02C7/141—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid
- F02C7/143—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid before or between the compressor stages
- F02C7/1435—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid before or between the compressor stages by water injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5846—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling by injection
Abstract
The embodiment of the invention provides a spray cooling device for reducing the air inlet temperature of a gas turbine compressor, which is applied to the gas turbine compressor and used for carrying out spray cooling on air entering an inlet of the gas turbine compressor so as to reduce the air inlet temperature of the gas turbine compressor; the atomizing nozzles are symmetrically and uniformly distributed on the periphery of the inlet of the compressor along the axial center line of the inlet of the compressor, the atomizing nozzles atomize cold water by utilizing compressed air to form fine water mist particles, and the fine water mist particles are evaporated and absorb heat in front of the inlet of the compressor to reduce the air inlet temperature of the compressor; the control device adjusts the first control valve and the second control valve according to the temperature and humidity value in front of the fine filter so as to control the cold water flow and the compressed air quantity entering the atomizing nozzle. The invention adopts the atomizing nozzle, uses compressed air to atomize cold water into 1-5 mu m water mist fine particles, and uses latent heat absorbed by the water mist fine particles when the water mist fine particles are evaporated in the air to reduce the air inlet temperature of the air compressor so as to recover the output of the gas turbine.
Description
Technical Field
The invention relates to the technical field of spray cooling, in particular to a spray cooling device for reducing the air inlet temperature of a gas turbine compressor.
Background
According to the working principle of the gas compressor of the gas engine, the gas compressor is used for supercharging by the principle that a large amount of air is sucked from the outside by the gas compressor, the temperature of the air is raised in the process, the air is pressurized and conveyed to the combustion chamber and mixed with natural gas sprayed out from a nozzle of the combustor, combustion reaction can be carried out under the chemical action to form high-temperature and high-pressure gas, and finally the high-temperature and high-pressure gas can pass through the turbine and then expand to do work. However, under the working condition of summer, the ambient temperature is increased, the combustion engine enters a temperature control state due to high air inlet temperature, so that the combustion engine cannot reach the rated load, and the output is limited, so that the output of the combustion engine needs to be recovered by reducing the air inlet temperature of the air compressor.
A common air cooling method is evaporative cooling, that is, the temperature of air is reduced by spraying water in the air and by latent heat absorbed during evaporation; the other is refrigeration cooling, namely a heat exchanger is additionally arranged, and the air temperature is reduced through surface heat exchange of cold and hot media. The evaporative cooling is spray cooling, water is sprayed to the inlet of the air compressor, the air temperature is reduced by utilizing latent heat absorbed by the evaporation of the water in the air, the cooling effect is poor, and the sprayed water enters the fine filter of the air compressor due to the fact that the main material of the fine filter of the air compressor is paper material, the pressure difference of a filter screen is increased, and the output is limited. And refrigeration formula cooling installs surface heat exchanger additional in compressor inside promptly, and the cold source flows at the intraductal side, and the air flows in the heat exchanger intraductal outside, reduces the air temperature through surface heat transfer, and this kind of heat transfer mode later stage transformation investment is great, and the construction is complicated, and the separation of considering air condensate water, collection etc. consider the heat exchanger later stage and maintain the scheduling problem, implement the difficulty.
Disclosure of Invention
The present specification provides a spray cooling device for reducing the inlet air temperature of a gas turbine compressor to overcome at least one technical problem in the prior art.
According to the embodiment of the specification, a spray cooling device for reducing the inlet air temperature of a gas turbine compressor is provided, and is applied to the gas turbine compressor and used for carrying out spray cooling on air entering an inlet of the gas turbine compressor so as to reduce the inlet air temperature of the gas turbine compressor; the spray cooling device comprises: the device comprises a cold water interface pipeline, a cold water conveying pipeline, a first shutoff valve, a cold water spray branch pipe, a first control valve, a cold water spray head butt joint pipeline, a compressed air interface pipeline, a second shutoff valve, a compressed air conveying pipeline, a compressed air spray branch pipe, a second control valve, a compressed air spray head butt joint pipeline, a plurality of atomization spray heads, a temperature and humidity sensor and a control device; wherein:
one end of the cold water interface pipeline is communicated with a cold water source, and the other end of the cold water interface pipeline is connected with the cold water conveying pipeline; the first shutoff door is arranged on the cold water conveying pipeline and used for controlling the circulation of cold water in the cold water conveying pipeline; a plurality of paths of cold water spray branch pipes are led out from the cold water conveying pipeline; each cold water spray branch pipe is provided with one first control valve; the cold water spraying branch pipe is connected with a plurality of cold water spray head butt joint pipelines;
one end of the compressed air interface pipeline is communicated with a compressed air source, and the other end of the compressed air interface pipeline is connected with the compressed air conveying pipeline; two second shutoff doors are arranged on the compressed air interface pipeline; a plurality of paths of compressed air spraying branch pipes are led out from the compressed air conveying pipeline; each compressed air spray branch pipe is provided with one second control valve for controlling the flow rate of compressed air in the compressed air spray branch pipe; the compressed air spraying branch pipe is connected with a plurality of compressed air spray head butt joint pipelines;
the plurality of atomizing nozzles are symmetrically and uniformly distributed on the periphery of the compressor inlet along the axial center line of the compressor inlet, and each atomizing nozzle is respectively connected with one cold water nozzle butt joint pipeline and one compressed air nozzle butt joint pipeline; the atomization nozzle atomizes cold water by utilizing compressed air to form water mist fine particles, the water mist fine particles are evaporated and absorb heat in front of an inlet of the compressor, become gaseous and are mixed into air inlet of the compressor, and the air inlet temperature of the compressor is reduced;
the temperature and humidity sensor is arranged in the compressor and used for monitoring the temperature and humidity of the compressor before a fine filter; the signal output end of the temperature and humidity sensor is electrically connected with the control device, and the control ends of the first control valve and the second control valve are respectively electrically connected with the control device; the control device adjusts the first control valve and the second control valve according to the temperature and humidity value before the fine filter so as to control the flow of cold water and the amount of compressed air entering the atomizing nozzle.
Optionally, the cold water source is a lithium bromide cold water diversion header, and the cold water interface pipeline is connected with a reserved interface of the lithium bromide cold water diversion header.
Optionally, the compressed air source is compressed air from an air compressor outlet main pipe, and one path of compressed air interface pipeline is led out from the air compressor outlet main pipe and used for conveying compressed air.
Optionally, the atomizer is an ultrasonic atomizer.
Optionally, the diameter of the cold water interface pipeline is DN100, the diameter of the cold water conveying pipeline is DN65, and the diameter of the cold water spray branch pipe is DN 20.
Optionally, the diameter of the compressed air interface pipeline is DN80, the diameter of the compressed air spray branch pipe is DN25, the compressed air interface pipeline is made of stainless steel, and the compressed air conveying pipeline is made of carbon steel.
Optionally, the cold water nozzle butt joint pipeline and the compressed air nozzle butt joint pipeline are both phi 10 instrument pipes.
Optionally, the number of the cold water nozzle butt-joint pipelines is the same as that of the compressed air nozzle butt-joint pipelines.
Optionally, the first control valve and the second control valve are both electrically operated valves.
Optionally, the size of the fine water mist particles formed by the atomizing nozzle is 1-5 μm.
The beneficial effects of the embodiment of the specification are as follows:
the invention is characterized in that a spray cooling device is arranged at the inlet of the gas turbine compressor, air-conditioning cold water is selected as a low-temperature water source, an atomizing nozzle is adopted, the cold water is atomized into 1-5 mu m of water mist fine particles by using compressed air, then air intake cooling is carried out in a mode of mixing with air, the cold source is directly mixed into intake air, no cold source loss exists, latent heat absorbed by the water mist fine particles in the air during evaporation is used for reducing the intake air temperature of the gas turbine compressor, the output of the gas turbine is recovered, the problem that the output of the gas turbine is limited under the condition of high-temperature weather is solved, the change and investment cost of the gas turbine system is reduced, and the implementation is easy.
The innovation points of the embodiment of the specification comprise:
1. in the embodiment, spray cooling is adopted, a direct mixed cooling mode is utilized, the device is simple and easy to realize, the air inlet temperature of the air compressor can be reduced, the output of the combustion engine can be recovered, and the problem that the output of the combustion engine is limited under the condition of high-temperature weather is solved.
2. In the embodiment, the spray water is atomized by the compressed air through the atomizing nozzle, the water is changed into fine particles with the diameter of only 1-5 microns, the unit volume of the spray water is reduced, the spray water is easier to evaporate, heat can be absorbed more quickly, and the air temperature is reduced, which is one of innovation points of the embodiment of the specification.
3. In the embodiment, the spray cooling device adopts air-conditioning cold water generated by lithium bromide as a water source, the cooling effect is more obvious, the air source adopts compressed air, the temperature of the compressed air is far lower than that of inlet air, and atomized gas is a cooling medium, which is one of the innovation points of the embodiment of the specification.
4. In the embodiment, the whole spray cooling device is symmetrically and uniformly distributed at the periphery of the inlet of the compressor according to the structure of the compressor, each branch is provided with the compressed air and the cold water control valve, the uniform distribution of the spray area for air intake cooling is ensured, the atomized cold water particles have sufficient distance to evaporate and absorb heat in the air through the atomization effect of the atomization nozzle, water is prevented from entering the compressor in a liquid state, the air intake temperature is reduced, and meanwhile, fine filtration, wet blockage are avoided, and the spray cooling device is one of the innovation points of the embodiment of the specification.
5. In this embodiment, the cold source is directly mixed into the intake air, and no loss of the cold source is one of the innovative points of the embodiments in this specification.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic partial structural diagram of a spray cooling device for reducing the temperature of inlet air of a compressor of a combustion engine according to an embodiment of the present disclosure;
FIG. 2 is a control block diagram of a spray cooling device for reducing the inlet air temperature of a compressor of a combustion engine according to an embodiment of the present disclosure;
in the figure, 1 is a cold water spray branch pipe, 2 is a first control valve, 3 is a cold water spray head butt joint pipeline, 4 is a compressed air spray branch pipe, 5 is a second control valve, 6 is a compressed air spray head butt joint pipeline, 7 is an atomizing spray head, 8 is a temperature and humidity sensor, and 9 is a control device.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the embodiments described are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "including" and "having" and any variations thereof in the embodiments of the present specification and the drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the specification discloses a spray cooling device for reducing the inlet air temperature of a gas compressor of a gas turbine. The following are detailed below.
Fig. 1 and fig. 2 show a spray cooling device for reducing the temperature of an inlet air of a compressor of a combustion engine according to an embodiment of the specification. The spray cooling device provided by the present invention is applied to the gas turbine compressor, and performs spray cooling on air entering an inlet of the gas turbine compressor to reduce an intake air temperature of the gas turbine compressor, as shown in fig. 1 and 2, the spray cooling device includes: a cold water interface pipeline (not shown in the figure), a cold water conveying pipeline (not shown in the figure), a first shutoff door (not shown in the figure), a cold water spray branch pipe 1, a first control valve 2, a cold water spray head butt joint pipeline 3, a compressed air interface pipeline (not shown in the figure), a second shutoff door (not shown in the figure), a compressed air conveying pipeline (not shown in the figure), a compressed air spray branch pipe 4, a second control valve 5, a compressed air spray head butt joint pipeline 6, a plurality of atomization spray heads 7, a temperature and humidity sensor 8 and a control device 9; one end of the cold water interface pipeline is communicated with a cold water source, and the other end of the cold water interface pipeline is connected with the cold water conveying pipeline; the first shutoff door is arranged on the cold water conveying pipeline and used for controlling the circulation of cold water in the cold water conveying pipeline; a plurality of paths of cold water spray branch pipes 1 are led out from the cold water conveying pipeline; each cold water spray branch pipe 1 is provided with one first control valve 2; the cold water spray branch pipe 1 is connected with a plurality of cold water spray head butt joint pipelines 3;
one end of the compressed air interface pipeline is communicated with a compressed air source, and the other end of the compressed air interface pipeline is connected with the compressed air conveying pipeline; two second shutoff doors are arranged on the compressed air interface pipeline; a plurality of paths of compressed air spray branch pipes 4 are led out from the compressed air conveying pipeline; each compressed air spray branch pipe 4 is provided with one second control valve 5 for controlling the flow rate of the compressed air in the compressed air spray branch pipe 4; the compressed air spray branch pipe 4 is connected with a plurality of compressed air spray head butt joint pipelines 6;
the plurality of atomizing nozzles 7 are symmetrically and uniformly distributed on the periphery of the compressor inlet along the axial center line of the compressor inlet, and each atomizing nozzle 7 is respectively connected with one cold water nozzle butt-joint pipeline 3 and one compressed air nozzle butt-joint pipeline 6; the atomizing nozzle 7 atomizes cold water by using compressed air to form water mist fine particles, the water mist fine particles are evaporated and absorb heat in front of an inlet of the compressor, become gaseous and are mixed into air inlet of the compressor, and the air inlet temperature of the compressor is reduced;
the temperature and humidity sensor 8 is arranged in the compressor and used for monitoring the temperature and humidity of the compressor before a fine filter; the signal output end of the temperature and humidity sensor 8 is electrically connected with the control device 9, and the control ends of the first control valve 2 and the second control valve 5 are respectively electrically connected with the control device 9; the control device 9 adjusts the first control valve 2 and the second control valve 5 according to the temperature and humidity value before the fine filter so as to control the flow rate of cold water and the amount of compressed air entering the atomizing nozzle 7.
The spray cooling device is arranged at the inlet of the gas compressor of the gas turbine, and the latent heat absorbed by water mist particles in the air is utilized to reduce the inlet air temperature, so that the output capacity of the gas turbine under the condition of high-temperature weather is improved, and the output of the gas turbine is recovered. Wherein, choose for use the cooling water source as the water spray source of atomizer 7 to choose for use compressed air as the air supply of atomizer 7, the cooling effect is better, and the temperature of compressed air is also far below the air temperature of combustion engine compressor entrance, atomizer 7 utilizes the water smoke fine particle that compressed air and cooling water source formed, and the temperature is lower, and itself is a coolant, mixes the back with the air again, evaporates and absorbs latent heat in the air, because its self unit volume is less, evaporates more easily, can reduce combustion engine compressor inlet air temperature more fast better.
Specifically, cooling water is conveyed to a cold water conveying pipeline from a cooling water source through a cold water interface pipeline, and is divided in the cold water conveying pipeline, the cooling water flows to a multi-path cold water spray branch pipe 1, and the cooling water in the cold water spray branch pipe 1 is divided into a plurality of atomization spray heads 7 through a plurality of cold water spray head butt joint pipelines 3 and is used as a spray water source. Compressed air is conveyed to the compressed air conveying pipeline from the compressed air source end through the compressed air interface pipeline, is divided in the compressed air conveying pipeline and is conveyed to the multiple paths of compressed air spraying branch pipes 4, and the compressed air in the compressed air spraying branch pipes 4 is divided into the multiple atomizing nozzles 7 through the cold water nozzle butt joint pipelines 3 and is used as an air source in the atomizing nozzles 7. The cooling water and the compressed air are both conveyed to the atomizing nozzle 7, the atomizing nozzle 7 sprays the cooling water to the air in a soft and low-speed mist mode by utilizing the compressed air, and the formed fine water mist particles have large surface area and can be quickly contacted with the air to achieve the aim of cooling.
The superfine water mist particles with the particle diameter smaller than 10 mu m generated by the atomizing nozzle 7 are utilized to increase the contact with air when the water surface area with certain mass is increased, so that the heat exchange quantity is more easily put in the air, and the moisture evaporation achieves the purpose of heat absorption and temperature reduction. The spray cooling device is characterized in that a first shutoff door is mounted on the cold water conveying pipeline, the cold water conveying pipeline is connected or blocked by the first shutoff door, when the spray cooling device is put into operation, the first shutoff door is opened, when spray cooling is not needed, the first shutoff door is closed, and the spray cooling device is withdrawn from operation. The compressed air interface pipeline is provided with two second shutoff doors, the two second shutoff doors are used for controlling the conveying of compressed air in the compressed air interface pipeline, and the two valves are additionally arranged for ensuring the tightness of the device. It is to be noted and understood that two valves may be added to the cold water delivery line to ensure water side tightness. In addition, all set up a first control valve 2 on every cold water spray branch pipe 1, utilize first control valve 2 to control the cold water flux in the cold water spray branch pipe 1, and then control the cold water volume that gets into atomizer 7, and the same is said, all install a second control valve 5 on every compressed air spray branch pipe 4, utilize second control valve 5 to control the air input of compressed air in the compressed air spray branch pipe 4, and then control the compressed air volume that gets into atomizer 7, thus, the accessible is adjusted first control valve 2, the 5 aperture of second control valve, adjust the flow ratio of cold water and compressed air in atomizer 7, in order to reach best atomization effect, when spray cooling device withdraws from the operation completely, close first control valve 2, second control valve 5.
In order to realize the automatic control of the atomization effect of the atomizer 7, a temperature and humidity sensor 8 is arranged in the compressor, the temperature and humidity in front of a fine filter of the compressor are monitored in real time, the measured temperature and humidity value in front of the fine filter is communicated to a control device 9, the control device 9 judges the compressed air quantity and the cold water flow quantity required by the atomizer 7 according to the temperature and humidity value in front of the fine filter, the cold water flow quantity of the atomizer 7 is adjusted by controlling a first control valve 2, the compressed air quantity of the atomizer 7 is adjusted by controlling a second control valve 5, and the atomization effect of the atomizer 7 is further adjusted, wherein the cooling and heat absorption process of water mist fine particles formed by the atomizer 7 is carried out at the periphery of the inlet of the compressor of the gas turbine, the atomized water mist fine particles have sufficient distance to evaporate in the air and absorb heat, and the water is prevented from entering the compressor in a liquid state, when the temperature of the inlet air is reduced, the fine filtration, the wet blockage and the direct mixing of the cold source into the inlet air are avoided, and the loss of the cold source is avoided.
It should be noted that the above mentioned "sufficient distance" means that there is a distance between the atomizer 7 and the compressor inlet sufficient to make fine water mist particles completely evaporate and become gaseous, the smaller the water mist particles are, the larger the surface area of a certain mass of water is, the larger the surface area of the water is, so that the water is more easily absorbed and volatilized to reduce the temperature, the more easily the water is changed from granular liquid state to gaseous state, the wet saturation of the air is improved, the water existing in the liquid state is reduced, thereby being beneficial to protecting the pressure difference of the filter screen, and avoiding the pressure difference from becoming larger due to too much absorbed water by the filter screen, and the specific optimal distance needs to be determined according to the space around the compressor and the model of the atomizer 7.
Further, the cold water source is a lithium bromide cold water distribution header, and the cold water interface pipeline is connected with a reserved interface of the lithium bromide cold water distribution header; the compressed air source is compressed air from an outlet main pipe of the air compressor, and one path of compressed air interface pipeline is led out from the outlet main pipe of the air compressor and used for conveying the compressed air. In this embodiment, use lithium bromide air conditioner cold water as low temperature water source, improve cooling effect, through adopting ultrasonic atomization nozzle, utilize compressed air to atomize lithium bromide air conditioner cold water into 1 ~ 5 mu m's fine particle, its unit volume diminishes, and the evaporation is more easily, can absorb the air heat faster, reduces the air temperature.
If the diameter of the water mist particles is large, the contact surface area of the water mist and air in a certain space is small, and heat transfer cannot be effectively carried out; meanwhile, the water mist particles are large, the mass is large, the water mist cannot effectively contact with air, the water mist is more easily dropped to the ground surface, and the cooling effect cannot be achieved; the smaller the water mist particles are, the larger the surface area of water with certain mass is, and the larger the contact surface with air is, so that the water mist is easier to absorb heat, volatilize and cool. Therefore, the atomizing nozzle 7 is preferably an ultrasonic atomizing nozzle, and the size of the fine water mist particles formed by the atomizing nozzle 7 is 1-5 μm.
In a specific embodiment, the diameter of the cold water interface pipeline is DN100, the diameter of the cold water delivery pipeline is DN65, and the diameter of the cold water spray branch pipe 1 is DN 20. The compressed air interface pipeline diameter is DN80, the 4 diameters of compressed air spraying branch pipe are DN25, the material of compressed air interface pipeline is the stainless steel, the material of compressed air pipeline is the carbon steel. And the cold water spray head butt joint pipeline 3 and the compressed air spray head butt joint pipeline 6 are phi 10 instrument pipes.
Meanwhile, the number of the cold water nozzle butt-joint pipelines 3 is the same as that of the compressed air nozzle butt-joint pipelines 6, and each pair of the cold water nozzle butt-joint pipeline 3 and the compressed air nozzle butt-joint pipeline 6 are connected to one atomizing nozzle 7 together to supply cold water and compressed air required by the atomizing nozzle 7.
The first control valve 2 and the second control valve 5 in the spray cooling device for reducing the inlet air temperature of the gas compressor of the gas turbine in the embodiment of the invention are electric valves, and automatic adjustment is realized through the control of the control device 9, so that the adjustment is more timely, safer and more reliable.
In summary, the present specification discloses a spray cooling device for reducing the inlet air temperature of a gas turbine compressor, wherein the spray cooling device is arranged at the inlet of the gas turbine compressor, air-conditioning cold water is selected as a low-temperature water source, an atomizing nozzle is adopted to atomize the cold water into fine water mist particles of 1-5 μm by using compressed air, then the fine water mist particles are mixed with air to cool the inlet air, the inlet air temperature of the gas turbine is reduced by using latent heat absorbed by the fine water mist particles when the fine water mist particles are evaporated in the air, and the outlet air is recovered, so that the problem that the outlet air of the gas turbine is limited in high-temperature weather conditions is solved, the change and investment cost of the gas turbine system is reduced, and the implementation is easy.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
Those of ordinary skill in the art will understand that: modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be located in one or more devices different from the embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The spray cooling device is characterized in that the spray cooling device is applied to the gas turbine compressor and is used for spray cooling air entering an inlet of the gas turbine compressor so as to reduce the inlet air temperature of the gas turbine compressor; the spray cooling device comprises: the device comprises a cold water interface pipeline, a cold water conveying pipeline, a first shutoff valve, a cold water spray branch pipe, a first control valve, a cold water spray head butt joint pipeline, a compressed air interface pipeline, a second shutoff valve, a compressed air conveying pipeline, a compressed air spray branch pipe, a second control valve, a compressed air spray head butt joint pipeline, a plurality of atomization spray heads, a temperature and humidity sensor and a control device; wherein:
one end of the cold water interface pipeline is communicated with a cold water source, and the other end of the cold water interface pipeline is connected with the cold water conveying pipeline; the first shutoff door is arranged on the cold water conveying pipeline and used for controlling the circulation of cold water in the cold water conveying pipeline; a plurality of paths of cold water spray branch pipes are led out from the cold water conveying pipeline; each cold water spray branch pipe is provided with one first control valve; the cold water spraying branch pipe is connected with a plurality of cold water spray head butt joint pipelines;
one end of the compressed air interface pipeline is communicated with a compressed air source, and the other end of the compressed air interface pipeline is connected with the compressed air conveying pipeline; two second shutoff doors are arranged on the compressed air interface pipeline; a plurality of paths of compressed air spraying branch pipes are led out from the compressed air conveying pipeline; each compressed air spray branch pipe is provided with one second control valve for controlling the flow rate of compressed air in the compressed air spray branch pipe; the compressed air spraying branch pipe is connected with a plurality of compressed air spray head butt joint pipelines;
the plurality of atomizing nozzles are symmetrically and uniformly distributed on the periphery of the compressor inlet along the axial center line of the compressor inlet, and each atomizing nozzle is respectively connected with one cold water nozzle butt joint pipeline and one compressed air nozzle butt joint pipeline; the atomization nozzle atomizes cold water by utilizing compressed air to form water mist fine particles, the water mist fine particles are evaporated and absorb heat in front of an inlet of the compressor, become gaseous and are mixed into air inlet of the compressor, and the air inlet temperature of the compressor is reduced;
the temperature and humidity sensor is arranged in the compressor and used for monitoring the temperature and humidity of the compressor before a fine filter; the signal output end of the temperature and humidity sensor is electrically connected with the control device, and the control ends of the first control valve and the second control valve are respectively electrically connected with the control device; the control device adjusts the first control valve and the second control valve according to the temperature and humidity value before the fine filter so as to control the flow of cold water and the amount of compressed air entering the atomizing nozzle.
2. The spray cooling device for reducing the inlet air temperature of the gas turbine compressor as claimed in claim 1, wherein the cold water source is a lithium bromide cold water diversion header, and the cold water interface pipeline is connected with a reserved interface of the lithium bromide cold water diversion header.
3. The spray cooling device for reducing the inlet air temperature of the compressor of the gas turbine according to claim 1, wherein the compressed air source is compressed air from an outlet main pipe of the air compressor, and a compressed air interface pipeline is led out from the outlet main pipe of the air compressor and used for conveying the compressed air.
4. The spray cooling device for reducing the inlet air temperature of the compressor of the gas turbine as claimed in claim 1, wherein the atomizer is an ultrasonic atomizer.
5. The spray cooling device for reducing the inlet air temperature of the compressor of the gas turbine as claimed in claim 1, wherein the diameter of the cold water interface pipeline is DN100, the diameter of the cold water delivery pipeline is DN65, and the diameter of the cold water spray branch pipe is DN 20.
6. The spray cooling device for reducing the inlet air temperature of the compressor of the gas turbine according to claim 1, wherein the diameter of the compressed air interface pipeline is DN80, the diameter of the compressed air spray branch pipe is DN25, the compressed air interface pipeline is made of stainless steel, and the compressed air delivery pipeline is made of carbon steel.
7. The spray cooling device for reducing the inlet air temperature of the gas compressor of the gas turbine as claimed in claim 1, wherein the cold water nozzle butt joint pipeline and the compressed air nozzle butt joint pipeline are phi 10 gauge pipes.
8. The spray cooling device for reducing the inlet air temperature of the compressor of the gas turbine as claimed in claim 1, wherein the number of the cold water nozzle butt joint pipelines is the same as the number of the compressed air nozzle butt joint pipelines.
9. The spray cooling device for reducing the inlet air temperature of the compressor of the gas turbine according to claim 1, wherein the first control valve and the second control valve are electrically operated valves.
10. The spray cooling device for reducing the inlet air temperature of the compressor of the gas turbine as claimed in claim 1, wherein the size of fine particles of water mist formed by the atomizing nozzles is 1-5 μm.
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| CN202011482883.6A CN114635798A (en) | 2020-12-15 | 2020-12-15 | Spray cooling device for reducing inlet air temperature of gas turbine compressor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1113486A (en) * | 1997-06-27 | 1999-01-19 | Hitachi Ltd | Gas turbine |
| US6216443B1 (en) * | 1995-12-28 | 2001-04-17 | Hitachi, Ltd. | Gas turbine, combined cycle plant and compressor |
| JP2002322916A (en) * | 2001-04-26 | 2002-11-08 | Toshiba Corp | Cooling apparatus of gas turbine suction air |
| CN103470379A (en) * | 2013-09-09 | 2013-12-25 | 无锡金龙石化冶金设备制造有限公司 | Combined type energy-saving gas turbine inlet air cooling system |
| CN211174359U (en) * | 2019-10-18 | 2020-08-04 | 张家港宏昌钢板有限公司 | Spray cooling device of low-calorific-value gas turbine |
-
2020
- 2020-12-15 CN CN202011482883.6A patent/CN114635798A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6216443B1 (en) * | 1995-12-28 | 2001-04-17 | Hitachi, Ltd. | Gas turbine, combined cycle plant and compressor |
| JPH1113486A (en) * | 1997-06-27 | 1999-01-19 | Hitachi Ltd | Gas turbine |
| JP2002322916A (en) * | 2001-04-26 | 2002-11-08 | Toshiba Corp | Cooling apparatus of gas turbine suction air |
| CN103470379A (en) * | 2013-09-09 | 2013-12-25 | 无锡金龙石化冶金设备制造有限公司 | Combined type energy-saving gas turbine inlet air cooling system |
| CN211174359U (en) * | 2019-10-18 | 2020-08-04 | 张家港宏昌钢板有限公司 | Spray cooling device of low-calorific-value gas turbine |
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