CN203584579U - Device for improving output of gas-steam combined circulating unit under high-temperature environment - Google Patents
Device for improving output of gas-steam combined circulating unit under high-temperature environment Download PDFInfo
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- CN203584579U CN203584579U CN201320700863.0U CN201320700863U CN203584579U CN 203584579 U CN203584579 U CN 203584579U CN 201320700863 U CN201320700863 U CN 201320700863U CN 203584579 U CN203584579 U CN 203584579U
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- absorption refrigerator
- surface cooler
- water circulation
- cooling
- circulation loop
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Abstract
The utility model relates to a device for improving the output of a gas-steam combined circulating unit under a high-temperature environment. Existing equipment with a similar mechanism is not reasonable in structure design. The device provided by the utility model is characterized by comprising a combustion gas turbine, a pre-dehumidification device, an absorption refrigerator, a waste heat boiler, a driving steam pipeline, a surface cooler, a freezing water circulating loop, a freezing water circulating water pump, a cooling tower, a cooling tower circulating loop and a cooling tower circulating water pump, wherein the pre-dehumidification device is connected with the surface cooler; the combustion gas turbine is connected with the surface cooler, the waste heat boiler is connected with the combustion gas turbine, and the driving steam pipeline is connected between the waste heat boiler and the absorption refrigerator; the freezing water circulating loop is connected between the surface cooler and the absorption refrigerator, the freezing water circulating water pump is arranged on the freezing water circulating loop, and the cooling tower circulating water pump is arranged on the cooling tower circulating loop. The device provided by the utility model has the advantages that the structural design is reasonable, and combined circulating self energy is fully utilized.
Description
Technical field
The utility model relates to a kind of combustion machine air inlet cooling unit, especially relate to a kind of device of exerting oneself under Gas-steam Combined Cycle unit hot environment that improves, can effectively reduce the gas temperature that enters gas turbine, improve the generated output performance of Gas-steam Combined Cycle unit under hot environment, and be equally applicable to the area that humidity is larger.
Background technique
Gas turbine is a kind of gas take continuous-flow as working medium, rotary power machinery thermal power transfer as mechanical work.In power industry, Gas Turbine Generating Units can be started rapidly without extraneous power supply in the situation that, and mobility is good, in electrical network, with its, drives peak load and as emergency use, can ensure preferably the safe operation of electrical network.But when combustion machine air inlet temperature raises, can cause the situations such as unit output deficiency, main cause is by what time following.
(1) due to gas turbine, be the power equipment of constant volume flow, the air quality flowing through depends on air density, and temperature more high density is lower, causes the MAF that sucks gas compressor to reduce, and the acting ability of unit diminishes thereupon.
(2) the wasted work amount of gas compressor is with the variation that is directly proportional of the thermodynamic temperature of air amount, and when atmospheric temperature raises, power input to compressor increases, and the cleared-out power of gas turbine reduces.
(3) when atmospheric temperature raises, constant even if the combustion gas initial temperature before generating unit speed and combustion gas turbine keeps, the compression ratio of gas compressor will decline to some extent, and this reduces the acting amount that causes combustion gas turbine, and its delivery temperature but can increase.
In the peak of power consumption period in summer, the higher unit output that causes of temperature declines.According to the study, 1 ℃ of maximum of ambient temperature rising can cause the specified generating capacity of gas turbine to decline 1%.Therefore, necessaryly take measures to reduce combustion machine intake temperature, to ensure that under hot environment, combustion machine is exerted oneself.
At present, main combustion machine Inlet Air Cooling Technology is divided into direct contact type and the large class of mediate contact formula two both at home and abroad.Wherein direct contact type cooling technology mainly refers to evaporation cooling technique, and while using the method, air can only be cooled at most, near wet-bulb temperature, be subject to environmental constraints larger, is applicable to dry hot area.
Cooling mainly, several forms such as LNG cold energy use cooling, direct vapor compression cooling cooling by ice cold-storage of mediate contact formula.Wherein, ice cold-storage is cooling is the latent heat accumulator that utilizes ice, and the method plant area area used is large, and power consumption is large, is applicable to time-of-use tariffs and differs larger area.LNG cold energy use is cooling is only applicable to locality the area of LNG accumulator plant.The cooling low-temperature receiver that obtains take power consumption as cost of direct vapor compression, maximum shortcoming is to need power consumption, especially in peak period, will use a large amount of peaks electricity, has weakened the peak modulation capacity of variable load plant.In addition, the working medium that its refrigerator uses has destruction to ozonosphere, has stopped manufacturing.
Have at present mechanism as indirection type cooling way, in the application in this field, to carry out exploratory development to lithium bromide absorbing type refrigeration mode, find in the large area of humidity of the air, the method will expend a large amount of colds for dehydration of air, and device usefulness is declined to a great extent.
Model utility content
The purpose of this utility model is to overcome above shortcomings in prior art, and provide a kind of reasonable in design, can make full use of combined cycle self-energy, can effectively improve the device of exerting oneself under Gas-steam Combined Cycle unit hot environment, and make it to be equally applicable to the larger areas of humidity of the air such as coastal.
The technical scheme in the invention for solving the above technical problem is: this structural feature of improving the device of exerting oneself under Gas-steam Combined Cycle unit hot environment is: comprise gas turbine, for reducing the pre-dehumidifier of ambient humidity, the Absorption Refrigerator that can freeze under the driving of steam, the exhaust heat boiler of steam can be provided to Absorption Refrigerator, for the steam of exhaust heat boiler being transported in Absorption Refrigerator as the driving steam pipework that drives heat energy, it is cooling to reduce the surface cooler of the air temperature that enters gas turbine for high temperature air is carried out, be used for realizing and between surface cooler and Absorption Refrigerator, carry out thermal energy exchange, and the waste heat of the air through surface cooler is transferred in Absorption Refrigerator to guarantee that surface cooler carries out cooling chilled water circulation loop to air effectively, for the medium of controlling chilled water circulation loop, carry out mobile chilled water circulating water pump, for discharging the cooling tower of Absorption Refrigerator waste heat, for realizing the cooling water circulation loop that carries out exchange heat between cooling tower and Absorption Refrigerator, and, for the medium of controlling cooling water circulation loop, carry out mobile cooling water circulation water pump, described pre-dehumidifier is connected with surface cooler, described gas turbine is connected with surface cooler, described exhaust heat boiler is connected with gas turbine, described driving steam pipework is connected between exhaust heat boiler and Absorption Refrigerator, described chilled water circulation loop is connected between surface cooler and Absorption Refrigerator, described chilled water circulating water pump is arranged on chilled water circulation loop, described cooling water circulation loop is connected between cooling tower and Absorption Refrigerator, and described cooling water circulation water pump is arranged on cooling water circulation loop.Make thus the steam driven Absorption Refrigerator of the utility model utilization from exhaust heat boiler, produce cryogenic freezing water, enter the surface cooler that is arranged in combustion machine air inlet place by chilled water circulation loop, to combustion machine, air inlet is carried out cooling; The utility model can effectively reduce combustion machine intake air temperature, solves the problem of Gas Turbine Output deficiency under summer high temperature environment; The utlity model has power consumption less, be subject to water condition affect little, can make full use of the features such as Combined Cycle Unit self waste heat.
As preferably, in surface cooler described in the utility model, be provided with dehumidifier.
The utility model compared with prior art, has the following advantages and effect: (1) utilizes Combined-cycle Gas Turbine Unit self waste heat, meets national energy-saving and reduces discharging industrial policy.(2) adopt steam driven, during operation without hazardous emission, the problem that does not exist equipment to be corroded.(3) can produce cryogenic freezing water in order to the air inlet of cooling combustion machine, good cooling results, is affected by external condition little.(4) when cooling load changes greatly, its efficiency maintains a higher level substantially.(5) do not have crucial rotatable parts, operation noise is low, and regular maintenance expense is low.(6) the working medium environmentally safe adopting.(7) humidity of the air larger area is suitable for too.
Accompanying drawing explanation
Fig. 1 is the structural representation that improves the device of exerting oneself under Gas-steam Combined Cycle unit hot environment in the utility model embodiment.
Fig. 2 is the structural representation indicating in Fig. 1 after media flow direction.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail, and following examples are to explanation of the present utility model and the utility model is not limited to following examples.
Embodiment.
Referring to Fig. 1 to Fig. 2, in the present embodiment, improving the device of exerting oneself under Gas-steam Combined Cycle unit hot environment comprises surface cooler 1, gas turbine 2, exhaust heat boiler 3, Absorption Refrigerator 4, chilled water circulation loop 5, drives steam pipework 6, cooling water circulation loop 7, chilled water circulating water pump 8, cooling water circulation water pump 9, cooling tower 10 and pre-dehumidifier 11, wherein, in surface cooler 1, be provided with dehumidifier.The daily little power consumption of the Absorption Refrigerator 4 using, safeguards that simply operating cost is lower.
Pre-dehumidifier 11 in the present embodiment is connected with surface cooler 1, gas turbine 2 is connected with surface cooler 1, exhaust heat boiler 3 is connected with gas turbine 2, drive steam pipework 6 to be connected between exhaust heat boiler 3 and Absorption Refrigerator 4, chilled water circulation loop 5 is connected between surface cooler 1 and Absorption Refrigerator 4, chilled water circulating water pump 8 is arranged on chilled water circulation loop 5, cooling water circulation loop 7 is connected between cooling tower 10 and Absorption Refrigerator 4, and cooling water circulation water pump 9 is arranged on cooling water circulation loop 7.
Extraneous high temperature air enters the pre-dehumidifier 11 in the present embodiment, pre-dehumidifier 11 can reduce humidity of the air, the refrigerating capacity loss producing because water vapour condenses with minimizing, after pre-dehumidifying, air enters surface cooler 1, surface cooler 1 can carry out high temperature air cooling, thereby reduces the temperature of combustion machine air inlet.Because the air temperature that enters gas turbine 2 reduces and density increase, mass flow rate increases, and has improved the generated output performance of gas turbine 2 under high ambient conditions.
Driving steam pipework 6 in the present embodiment is arranged on exhaust heat boiler 3(or extracted steam from turbine pipeline) and Absorption Refrigerator 4 between, make exhaust heat boiler 3(or extracted steam from turbine) in partial heat energy can by drive steam pipework 6 be transported in Absorption Refrigerator 4, as the driving heat source of Absorption Refrigerator 4, carry out UTILIZATION OF VESIDUAL HEAT IN, be conducive to energy-saving and emission-reduction.
Chilled water circulation loop 5 in the present embodiment is arranged between surface cooler 1 and Absorption Refrigerator 4, chilled water circulating water pump 8 is arranged on chilled water circulation loop 5, during use, in chilled water circulation loop 5, be full of medium, the medium that can control in chilled water circulation loop 5 by chilled water circulating water pump 8 flows.Under the effect of chilled water circulation loop 5, between surface cooler 1 and Absorption Refrigerator 4, can carry out thermal energy exchange, to transfer in Absorption Refrigerator 4 through the waste heat of air in surface cooler 1, thereby guarantee that surface cooler 1 more effectively carries out cooling to air.
Cooling water circulation loop 7 in the present embodiment is arranged between cooling tower 10 and Absorption Refrigerator 4, cooling water circulation water pump 9 is arranged on cooling water circulation loop 7, during use, in cooling water circulation loop 7, be full of medium, the medium that can control in cooling water circulation loop 7 by cooling water circulation water pump 9 flows.Under the effect of cooling water circulation loop 7, make can carry out exchange heat between cooling tower 10 and Absorption Refrigerator 4, the unnecessary transfer of heat in Absorption Refrigerator 4 is discharged in cooling tower 10 again.
The workflow of improving the device of exerting oneself under Gas-steam Combined Cycle unit high ambient conditions in the present embodiment is as follows: exhaust heat boiler 3 low pressure steams (or extracted steam from turbine) are introduced Absorption Refrigerator 4 as driving heat source, the cryogenic freezing water of producing is for reducing the intake temperature of gas turbine 2, and chilled water is got back in Absorption Refrigerator 4 and emitted heat after absorbing heat in surface cooler 1.Cooling water absorbs unnecessary heat in Absorption Refrigerator 4, and emits heat in outside cooling tower 10, recycles.
The daily little power consumption of the Absorption Refrigerator 4 in the present embodiment, safeguards that simply operating cost is lower.Pre-dehumidifier 11 can successively be arranged in gas turbine 2 air inlet ingress with surface cooler 1, and is provided with dehumidifier in surface cooler 1.Intake temperature declines and causes when humidity increases, and avoids the water of condensation of separating out to impact safely gas turbine unit.Cooling tower 10 can be arranged nearby for the cooling tower of cooling refrigeration machine recirculated cooling water, reduces feed water pump wasted work, can also merge and use with former Combined Cycle Unit cooling tower, reduces initial cost and operating cost.Chilled water circulating pump 8 and cooling water circulating pump 9 provide power for the chilled water in system and cooling water circulation.Chilled water circulation loop 5 is with cooling water circulation loop 7 in order to be connected above-mentioned each constituent element, and its layout can be optimized layout according to field condition, to reduce circulating water pump wasted work.In the present embodiment, improve the device of exerting oneself under Gas-steam Combined Cycle unit high ambient conditions and can comprise the relevant auxiliaries such as supervisory system and switch, valve, for monitoring and the control of system real time execution situation, possess and gas turbine 2 control system information interaction functions, can realize telecontrol.
Extraneous air enters before gas turbine 2, first through pre-dehumidifier 11, dehumidify, then enter surface cooler 1 and carry out cooling processing, the cryogenic freezing water that Absorption Refrigerator 4 is produced enters surface cooler 1 via chilled water circulation loop 5, chilled water carries out temperature after heat exchange with high temperature air and raises in surface cooler 1, then by chilled water circulation loop 5, gets back to Absorption Refrigerator 4 and again freeze.Chilled water circulating pump 8 provides power for the lasting circulation of chilled water between Absorption Refrigerator 4 and surface cooler 1.
The driving source of the Absorption Refrigerator 4 in the utility model can be the low parameter steam from exhaust heat boiler 3.
In addition, it should be noted that, the specific embodiment described in this specification, the shape of its parts and components, institute's title of being named etc. can be different, and the above content described in this specification is only to the explanation of the utility model structure example.All equivalence variation or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.
Claims (2)
1. one kind is improved the device of exerting oneself under Gas-steam Combined Cycle unit hot environment, it is characterized in that: comprise gas turbine, for reducing the pre-dehumidifier of ambient humidity, the Absorption Refrigerator that can freeze under the driving of steam, the exhaust heat boiler of steam can be provided to Absorption Refrigerator, for the steam of exhaust heat boiler being transported in Absorption Refrigerator as the driving steam pipework that drives heat energy, it is cooling to reduce the surface cooler of the air temperature that enters gas turbine for high temperature air is carried out, be used for realizing and between surface cooler and Absorption Refrigerator, carry out thermal energy exchange, and the waste heat of the air through surface cooler is transferred in Absorption Refrigerator to guarantee that surface cooler carries out cooling chilled water circulation loop to air effectively, for the medium of controlling chilled water circulation loop, carry out mobile chilled water circulating water pump, for discharging the cooling tower of Absorption Refrigerator waste heat, for realizing the cooling water circulation loop that carries out exchange heat between cooling tower and Absorption Refrigerator, and, for the medium of controlling cooling water circulation loop, carry out mobile cooling water circulation water pump, described pre-dehumidifier is connected with surface cooler, described gas turbine is connected with surface cooler, described exhaust heat boiler is connected with gas turbine, described driving steam pipework is connected between exhaust heat boiler and Absorption Refrigerator, described chilled water circulation loop is connected between surface cooler and Absorption Refrigerator, described chilled water circulating water pump is arranged on chilled water circulation loop, described cooling water circulation loop is connected between cooling tower and Absorption Refrigerator, and described cooling water circulation water pump is arranged on cooling water circulation loop.
2. the device of exerting oneself under Gas-steam Combined Cycle unit hot environment that improves according to claim 1, is characterized in that: in described surface cooler, be provided with dehumidifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320700863.0U CN203584579U (en) | 2013-11-08 | 2013-11-08 | Device for improving output of gas-steam combined circulating unit under high-temperature environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320700863.0U CN203584579U (en) | 2013-11-08 | 2013-11-08 | Device for improving output of gas-steam combined circulating unit under high-temperature environment |
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| CN203584579U true CN203584579U (en) | 2014-05-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822431A (en) * | 2016-04-29 | 2016-08-03 | 西安热工研究院有限公司 | Combined cycle waste heat utilization system capable of stabilizing high/low inlet air temperature of compressor |
| CN109322748A (en) * | 2018-09-30 | 2019-02-12 | 天津华电北宸分布式能源有限公司 | Combustion engine inlet gas cooling device based on UTILIZATION OF VESIDUAL HEAT IN |
| CN109356724A (en) * | 2018-10-16 | 2019-02-19 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Fume afterheat heat supply and inlet gas cooling, gas heating coupled system |
-
2013
- 2013-11-08 CN CN201320700863.0U patent/CN203584579U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822431A (en) * | 2016-04-29 | 2016-08-03 | 西安热工研究院有限公司 | Combined cycle waste heat utilization system capable of stabilizing high/low inlet air temperature of compressor |
| CN109322748A (en) * | 2018-09-30 | 2019-02-12 | 天津华电北宸分布式能源有限公司 | Combustion engine inlet gas cooling device based on UTILIZATION OF VESIDUAL HEAT IN |
| CN109356724A (en) * | 2018-10-16 | 2019-02-19 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Fume afterheat heat supply and inlet gas cooling, gas heating coupled system |
| CN109356724B (en) * | 2018-10-16 | 2024-04-26 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Coupling method of flue gas waste heat supply and air inlet cooling and gas heating |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20181108 |