CN201714491U - Gas inlet cooling device of gas turbine based on solution dehumidification - Google Patents
Gas inlet cooling device of gas turbine based on solution dehumidification Download PDFInfo
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- CN201714491U CN201714491U CN2010202345757U CN201020234575U CN201714491U CN 201714491 U CN201714491 U CN 201714491U CN 2010202345757 U CN2010202345757 U CN 2010202345757U CN 201020234575 U CN201020234575 U CN 201020234575U CN 201714491 U CN201714491 U CN 201714491U
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Abstract
The utility model relates to a gas inlet cooling device of a gas turbine based on solution dehumidification. The gas output end of a waste heat recovery device is connected with the hot gas input end of a smoke-gas hot water heat exchanger; the water output end and the water inlet end of the smoke-gas hot water heat exchanger are connected with the water output end and the water inlet end of a solution hot water heat exchanger; the solution input end and the solution output end of the solution hot water heat exchanger are connected with the output end and the input end of a diluted solution pump; the solution output end of a solution regenerator is connected with the input end of a concentrated solution pump; the output end of the concentrated solution pump is connected with the input end of the concentrated liquid of a solution dehumidifier; the diluted solution output end of the solution dehumidifier is connected with the output end of the diluted solution pump; the output end of the solution dehumidifier is connected with the input end of the cooling solution pump; the air output end of a water evaporation cooler is connected with the input end of a water drop filter; and the output end of the water drop filter is connected with the input end of a gas pressing machine; and the output end of the gas pressing machine is connected with the air input end of a burning chamber.
Description
Technical field
The utility model relates to the gas turbine technology field, particularly a kind of cooling unit of gas turbine inlet air.
Background technique
Gas turbine is made up of gas compressor, firing chamber and combustion gas turbine (abbreviation turbine).Gas compressor sucks air and continuously with its compression from atmosphere.Air after the compression enters the firing chamber, and the fuel mix after-combustion with spraying into becomes high-temperature fuel gas, flows into expansion working in the turbine immediately, and promotion turbo wheel band compressor impeller and rotated together, and complementary work also can produce electric power as the output mechanical work of gas turbine.Be called the combustion gas initial temperature from the firing chamber to the fuel gas temperature of turbine import.It is many more that the high more turbine of initial temperature goes out merit, and the output work of gas turbine is just big more.For making full use of the exhaust heat of gas turbine, waste heat recovering device (being used to produce steam acting etc.) generally is set at the gas turbine rear portion, last combustion gas is discharged about 100 ℃.
Because gas turbine is the power equipment of constant volume flow, the air flowing quality depends on air density, and temperature is high more, and density is low more, causes the MAF that sucks gas compressor to reduce, and the capacity for work of unit diminishes thereupon.In addition, the wasted work amount of gas compressor is with the thermodynamic temperature that sucks air variations that be directly proportional, when promptly atmospheric temperature raises, and the power input to compressor increase, the cleared-out power of gas turbine reduces decrease in efficiency.According to the study, 1 ℃ of the every rising of ambient temperature, maximum can cause the specified generating capacity of gas turbine to descend 1%.And higher season and the period of ambient temperature, the general peak time of electricity needs just, this causes when electric power value is the highest, and gas turbine power generation is exerted oneself and is descended on the contrary, and this certainly will have influence on the Economy of gas turbine generating system.
Adopting cooling technology that gas turbine inlet air is cooled off, can improve the generating capacity of circulating power station in summer during the peak load, is the main method that addresses the above problem, and can bring to have higher energy-saving benefit and economic benefit.Generally speaking, the intake air chilling temperature is low more, and gas turbine performance is improved big more.At present, the air inlet cooling technology mainly contains two classes: a class is a mediate contact formula refrigeration, with sensible heat and the latent heat of removing air inlet, as cooling of lithium bromide absorption machine or the cooling of electricity refrigeration handpiece Water Chilling Units; Another kind of is directly contact refrigeration, to remove the air inlet sensible heat, as evaporating and cooling method.In the evaporative cooling process, water constantly sprays to air, and wet air relative moisture improves constantly, and when relative moisture reached 100%, the evaporative cooling process stopped.The evaporating and cooling method system is simple, little investment, and operation and maintenance cost is low.But the compressor air inlet machine temperature can only be approaching after the evaporative cooling, but do not reach environment wet-bulb temperature forever, and it is bigger influenced by ambient humidity and water temperature, generally is used for the area of high temperature, drying more, and is limited to the area effect of high temperature, high humidity.
Solution dehumidification means that adopting the salt solution (as lithium bromide) with humidity conditioning function is working medium, utilizes the moisture absorption of salt solution and moisture releasing characteristic to reach the purpose of wet air being carried out drying.It uses concentrated solution that air is dehumidified, and the dilute solution that obtains after the dehumidification treatments is carried out Regeneration Treatment.Because dilute solution is carried out the required temperature of solution regeneration lower (solution regeneration is the low-temperature water heating of needs＞70 ℃ only), this just carries out solution for the low humidity exhaust that utilizes gas turbine cycle and regenerates possibility is provided.In the solution dehumidification process, what mainly consume is the heat energy of solution regeneration, consumes a spot of electric energy in addition and is used for distributing systems such as solution pump.
The model utility content
The purpose of this utility model is to provide a kind of charged air cooler of gas turbine based on solution dehumidification, in order to improve gas turbine proficiency and compare merit under high temperature, super-humid conditions.
For achieving the above object, technical solution of the present utility model is:
A kind of charged air cooler of gas turbine based on solution dehumidification comprises gas turbine, waste heat recovering device; It also comprises solution moisture removing device, water devaporizer, water droplet filter, fume hot-water heat exchanger, solution hot water heat exchanger, solution regenerator; Wherein,
The combustion gas output terminal of waste heat recovering device is connected with fume hot-water exchanger heat combustion gas input end; Combustion turbine exhaustion is discharged by the combustion gas output terminal of fume hot-water heat exchanger; The water output terminal of fume hot-water heat exchanger is connected with the water input end of solution hot water heat exchanger; The water input end of fume hot-water heat exchanger is connected with the water output terminal of solution hot water heat exchanger; The solution input end of solution hot water heat exchanger is connected with the dilute solution delivery side of pump; The solution output terminal of solution hot water heat exchanger is connected with the solution input end of solution regenerator; The solution output terminal of solution regenerator is connected with the input end of concentrated solution pump; The air that is used to dehumidify is entered by the air input end of solution regenerator, is discharged by the air output terminal, to the air input end of solution moisture removing device; The concentrated solution delivery side of pump is connected with the concentrated solution input end of solution moisture removing device; The dilute solution output terminal of solution moisture removing device is connected with the input end of dilute solution pump; One output terminal of solution moisture removing device is connected with the input end of cooling solution pump, and the cooling solution delivery side of pump is connected with an input end of solution moisture removing device, forms the cooling water circulation;
The dry air output terminal of solution moisture removing device is connected with the air input end of water devaporizer; The air output terminal of water devaporizer is connected with the input end of water droplet filter; Be used for transpiration-cooled water and entered by the water input end of water devaporizer, unevaporated water is discharged by the water output terminal of water devaporizer; The output terminal of water droplet filter is connected with the gas compressor input end; The gas compressor output terminal is connected with firing chamber air input end.
Described device, it also comprises solution cold-water heat exchanger, cooling waterpump, cooling tower; Wherein, an output terminal of solution moisture removing device is connected with the input end of cooling solution pump; The cooling solution delivery side of pump is connected with the solution input end of solution cold-water heat exchanger; The solution output terminal of solution cold-water heat exchanger is connected with an input end of solution moisture removing device; The water output terminal of cooling solution pump is connected with the input end of cooling waterpump; The cooling water delivery side of pump is connected with the water input end of cooling tower; The water output terminal of cooling tower is connected with the water input end of solution cold-water heat exchanger.
The utility model can effectively overcome direct contact type water-spraying evaporation cooling technology and be subjected to ambient humidity to influence bigger problem, and is obvious to the gas turbine raising performance effect of using in hot and humid area.
Description of drawings
Fig. 1 is the charged air cooler of gas turbine schematic flow sheet based on solution dehumidification of the present utility model;
Fig. 2 is the schematic representation of the charged air cooler of gas turbine specific embodiment based on solution dehumidification of the present utility model; Wherein: water devaporizer 1, water droplet filter 2, gas compressor 3, firing chamber 4, turbine 5, generator or load 6, combustion turbine exhaustion waste heat recovering device 7, fume hot-water heat exchanger 8, solution hot water heat exchanger 9, solution regenerator 10, concentrated solution pump 11, dilute solution pump 12, solution moisture removing device 13, cooling solution pump 14, solution cold-water heat exchanger 15, cooling waterpump 16, cooling tower 17.
Embodiment
See Fig. 1, be the charged air cooler of gas turbine schematic flow sheet based on solution dehumidification of the present utility model: the gas turbine cycle rear portion at original gas turbine and waste heat recovering device composition is provided with the fume hot-water heat exchanger, the low temperature exhaust heat that reclaims in the gas turbine cycle exhaust produces＞70 ℃ hot water at the fume hot-water heat exchanger, and combustion turbine exhaustion enters atmosphere; Hot water will be heated by the dilute solution that solution moisture removing device is sent here in the solution hot water heat exchanger; Dilute solution enters the solution regenerator after heating up, and contacts with outdoor air in the solution regenerator, discharges moisture to air, realizes concentrating regeneration; Concentrated solution is sent to solution moisture removing device; The air that enters gas turbine at first enters solution moisture removing device and directly contacts with concentrated solution, and airborne moisture is absorbed by concentrated solution, becomes the air (water content 8～9g/kg air) of sufficiently dry; Solution in the solution moisture removing device is cooled off by the cooling water heat exchange; Cooling water is sent to cooling tower, and the cooling water through cooling off is sent to the solution cold-water heat exchanger again; The dry air that is come out by solution moisture removing device enters the water devaporizer; The air through supercooling that is come out by the water devaporizer enters the water droplet filter, enters gas turbine then.
The utility model is with gas turbine and circulation thereof, low grade residual heat recovery, solution dehumidification technology, the organic integration of gas turbine inlet air evaporation cooling technique, formation utilizes the gas turbine tow taste heat to drive solution dehumidification, utilize evaporation cooling technique to realize the method for gas turbine inlet air cooling again, and the effect that improves gas turbine proficiency and power in hot and humid area has significantly surmounted simple direct contact type water-spraying evaporation cooling technology scheme.
Charged air cooler of gas turbine based on solution dehumidification of the present utility model, in ambient temperature is that 35 ℃, relative moisture are under 80% the condition, suppose the combustion gas initial temperature, the gas compressor pressure ratio is identical with component efficiencies and in water devaporizer (1) air wetting to relative moisture 95%, more do not take any cooling method, adopt simple evaporating and cooling method to make the power of gas turbine improve about 1.8～2.2%, efficient and improve about 0.5～1.8%; And adopt the charged air cooler of gas turbine based on solution dehumidification of the present utility model, can make the power of gas turbine improve about 11.0～15.0%, efficient and improve about 3.0～7.0%.The amplitude that power and efficient improve is different because of gas turbine, environmental conditions etc., but applicability of the present utility model is not subjected to the restriction of gas turbine model, capacity.
Charged air cooler of gas turbine based on solution dehumidification of the present utility model comprises following sport technique segment: 1) heat recovery: reclaim the low temperature exhaust heat in the gas turbine cycle exhaust, produce＞70 ℃ hot water at the fume hot-water heat exchanger; 2) solution dehumidification: hot water is as the thermal source of solution regenerator, drive a whole set of solution dehumidification device operation, drying enters the air of gas turbine, adopt cooling water to take away the heat that dehumidification process produces in the solution moisture removing device simultaneously, avoid the whole air inlet cooling effect of air temperature rising influence of drying; 3) evaporative cooling: dry air enters the water devaporizer, by evaporation of water, reaches the effect that reduces air temperature; 4) water droplet filters: the air through supercooling enters the water droplet filter, except the water droplet of carrying secretly in the air, reduces the infringement of water droplet to gas compressor.The sport technique segment of gas turbine cycle then comprises: 1) wet air compression: humid air stream is boosted through gas compressor, and the flow process terminal is the pressurized air that temperature and pressure all is higher than ambient condition; 2) burning heats up: absorb the heat that fuel discharges in the firing chamber; 3) the combustion gas acting of expanding: the high-temperature high-pressure fuel gas acting of in turbine, expanding, decrease temperature and pressure; 4) heat recovery: the combustion gas that the turbine outlet has waste heat produces high/medium/low pressure hot water or steam by waste heat recovering device; 5) combustion gas is directly arranged to atmosphere.
The theoretical foundation and the principle of the charged air cooler of gas turbine based on solution dehumidification of the present utility model are: 1) solution dehumidification: when solution concentration is low, during the steam partial pressure of the projecting air of surface vapor pressure of solution, liquid water in the solution becomes gaseous state and enters in the air, and solution is concentrated regeneration; When solution concentration was higher, when the surface vapor pressure of solution was lower than the steam partial pressure of surrounding atmosphere, water in air became liquid state and enters in the solution, and air is dehumidified; 2) evaporative cooling: the evaporative cooling process is one and decides the enthalpy process that it utilizes evaporation of water latent heat, in the process of saturated thermal insulation, intake air is reduced near wet-bulb temperature from dry-bulb temperature, reaches the effect that reduces air temperature.Owing to be provided with solution moisture removing device before devaporizer, by the evaporative cooling process, air can be cooled to lower temperature; 3) the air inlet cooling improves gas turbine performance: gas compressor intake air temperature reduces, and air density increases, and the air mass flow that sucks gas compressor increases, and the capacity for work of unit increases thereupon; In addition, the wasted work amount of gas compressor is with the thermodynamic temperature that sucks air variations that be directly proportional, and promptly atmospheric temperature reduces, and power input to compressor reduces, the cleared-out power increase of gas turbine, and unit efficiency improves thereupon.
For a more detailed description to the utility model for example below in conjunction with Fig. 2: in conjunction with Fig. 2, composition based on the charged air cooler of gas turbine of solution dehumidification comprises the solution moisture removing device 13 that is used for the gas turbine inlet air cooling, water devaporizer 1, water droplet filter 2, fume hot-water heat exchanger 8, solution hot water heat exchanger 9, solution regenerator 10, concentrated solution pump 11, dilute solution pump 12, cooling solution pump 14, solution cold-water heat exchanger 15, cooling waterpump 16, cooling tower 17, and original gas turbine cycle parts gas compressor 3, firing chamber 4, turbine 5, generator or load 6 and combustion turbine exhaustion waste heat recovering device 7.
The Placement of device is: the air as gas turbine working medium at first enters solution moisture removing device 13; The dry air output terminal of solution moisture removing device 13 is connected with the air input end of water devaporizer 1; The air output terminal of water devaporizer 1 is connected with the input end of water droplet filter 2; Be used for transpiration-cooled water and entered by the water input end of water devaporizer 1, unevaporated water is discharged by the water output terminal of water devaporizer 1; The output terminal of water droplet filter 2 is connected with gas compressor 3 input ends; Gas compressor 3 output terminals are connected with firing chamber 4 air input ends; The fuel that is used for heated air is entered by firing chamber 4 fuel input ends; Firing chamber 4 output terminals are connected with turbine 5 input ends; Turbine 5 combustion gas output terminals are connected with waste heat recovering device 7 input ends; The complementary work pushing generator after gas turbine turbine 5 expansion works deduction gas compressor 3 compression works or 6 runnings of loading; The combustion gas output terminal of waste heat recovering device 7 is connected with fume hot-water heat exchanger 8 hot combustion gas input ends; Combustion turbine exhaustion is discharged by the combustion gas output terminal of fume hot-water heat exchanger 8; The water output terminal of fume hot-water heat exchanger 8 is connected with the water input end of solution hot water heat exchanger 9; The water input end of fume hot-water heat exchanger 8 is connected with the water output terminal of solution hot water heat exchanger 9; The solution input end of solution hot water heat exchanger 9 is connected with the output terminal of dilute solution pump 12; The solution output terminal of solution hot water heat exchanger 9 is connected with the solution input end of solution regenerator 10; The solution output terminal of solution regenerator 10 is connected with the input end of concentrated solution pump 11; The air that is used to dehumidify is entered by the air input end of solution regenerator 10, is discharged by the air output terminal; The output terminal of concentrated solution pump 11 is connected with the concentrated solution input end of solution moisture removing device 13; The dilute solution output terminal of solution moisture removing device 13 is connected with the input end of dilute solution pump; One output terminal of solution moisture removing device 13 is connected with the input end of cooling solution pump 14; The output terminal of cooling solution pump 14 is connected with the solution input end of solution cold-water heat exchanger 15; The solution output terminal of solution cold-water heat exchanger 15 is connected with an input end of solution moisture removing device 13; The water output terminal of cooling solution pump 14 is connected with the input end of cooling waterpump 16; The output terminal of cooling waterpump 16 is connected with the water input end of cooling tower 17; The water output terminal of cooling tower 17 is connected with the water input end of solution cold-water heat exchanger 15.
Fume hot-water heat exchanger 8 reclaims the low temperature exhaust heat in the gas turbine cycle exhaust and produces＞70 ℃ hot water; The dilute solution heating that hot water is sent dilute solution pump 12 here in solution hot water heat exchanger 9; Enter solution regenerator 10 after dilute solution heats up, in solution regenerator 10, contact and discharge moisture, realize concentrating and regenerates to air with outdoor air; Concentrated solution is sent to solution moisture removing device 13 by concentrated solution pump 11; The air that enters gas turbine at first enters solution moisture removing device 13 and directly contacts with concentrated solution, and airborne moisture is absorbed by concentrated solution, becomes dry air; The solution of solution moisture removing device 13 bottoms constantly pumps into solution cold-water heat exchanger 15 by cooling solution pump 14, cools off with the cooling water heat exchange; Cooling water is sent to cooling tower 17 by cooling waterpump 16 and cools off; The dry air that is come out by solution moisture removing device 13 enters water devaporizer 1; The air through supercooling that is come out by water devaporizer 1 enters water droplet filter 2, enters gas compressor 3 then.
Claims (2)
1. the charged air cooler of gas turbine based on solution dehumidification comprises gas turbine, waste heat recovering device (7); It is characterized in that: also comprise solution moisture removing device (13), water devaporizer (1), water droplet filter (2), fume hot-water heat exchanger (8), solution hot water heat exchanger (9), solution regenerator (10); Wherein,
The combustion gas output terminal of waste heat recovering device (7) is connected with the hot combustion gas input end of fume hot-water heat exchanger (8); Combustion turbine exhaustion is discharged by the combustion gas output terminal of fume hot-water heat exchanger (8); The water output terminal of fume hot-water heat exchanger (8) is connected with the water input end of solution hot water heat exchanger (9); The water input end of fume hot-water heat exchanger (8) is connected with the water output terminal of solution hot water heat exchanger (9); The solution input end of solution hot water heat exchanger (9) is connected with the output terminal of dilute solution pump (12); The solution output terminal of solution hot water heat exchanger (9) is connected with the solution input end of solution regenerator (10); The solution output terminal of solution regenerator (10) is connected with the input end of concentrated solution pump (11); The air that is used to dehumidify is entered by the air input end of solution regenerator (10), is discharged by the air output terminal, to the air input end of solution moisture removing device (13); The output terminal of concentrated solution pump (11) is connected with the concentrated solution input end of solution moisture removing device (13); The dilute solution output terminal of solution moisture removing device (13) is connected with the input end of dilute solution pump (12); One output terminal of solution moisture removing device (13) is connected with the input end of cooling solution pump (14), and the output terminal of cooling solution pump (14) is connected with an input end of solution moisture removing device (13), forms the cooling water circulation;
The dry air output terminal of solution moisture removing device (13) is connected with the air input end of water devaporizer (1); The air output terminal of water devaporizer (1) is connected with the input end of water droplet filter (2); Be used for transpiration-cooled water and entered by the water input end of water devaporizer (1), unevaporated water is discharged by the water output terminal of water devaporizer (1); The output terminal of water droplet filter (2) is connected with gas compressor (3) input end; Gas compressor (3) output terminal is connected with firing chamber (4) air input end.
2. device as claimed in claim 1 is characterized in that: also comprise solution cold-water heat exchanger (15), cooling waterpump (16), cooling tower (17); Wherein, an output terminal of solution moisture removing device (13) is connected with the input end of cooling solution pump (14); The output terminal of cooling solution pump (14) is connected with the solution input end of solution cold-water heat exchanger (15); The solution output terminal of solution cold-water heat exchanger (15) is connected with an input end of solution moisture removing device (13); The water output terminal of cooling solution pump (14) is connected with the input end of cooling waterpump (16); The output terminal of cooling waterpump (16) is connected with the water input end of cooling tower (17); The water output terminal of cooling tower (17) is connected with the water input end of solution cold-water heat exchanger (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202345757U CN201714491U (en) | 2010-06-13 | 2010-06-13 | Gas inlet cooling device of gas turbine based on solution dehumidification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202345757U CN201714491U (en) | 2010-06-13 | 2010-06-13 | Gas inlet cooling device of gas turbine based on solution dehumidification |
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| Publication Number | Publication Date |
|---|---|
| CN201714491U true CN201714491U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202345757U Expired - Lifetime CN201714491U (en) | 2010-06-13 | 2010-06-13 | Gas inlet cooling device of gas turbine based on solution dehumidification |
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| Country | Link |
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| CN (1) | CN201714491U (en) |
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2010
- 2010-06-13 CN CN2010202345757U patent/CN201714491U/en not_active Expired - Lifetime
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Granted publication date: 20110119 |
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| CX01 | Expiry of patent term |