CN103352761A - Waste heat utilization based gas turbine inlet air cooling device - Google Patents
Waste heat utilization based gas turbine inlet air cooling device Download PDFInfo
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- CN103352761A CN103352761A CN2013102459239A CN201310245923A CN103352761A CN 103352761 A CN103352761 A CN 103352761A CN 2013102459239 A CN2013102459239 A CN 2013102459239A CN 201310245923 A CN201310245923 A CN 201310245923A CN 103352761 A CN103352761 A CN 103352761A
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Abstract
The invention relates to a waste heat utilization based gas turbine inlet air cooling device, which aims to fill in the blank of a waste heat utilization based gas turbine inlet air cooling device capable of sufficiently utilizing waste heat of a power plant at present. The waste heat utilization based gas turbine inlet air cooling device comprises a gas turbine and is characterized by also comprising a surface cooler, a waste heat boiler, a driving steam pipe, an absorption refrigerator, a freezing water circulation loop, a cooling water circulation loop, a cooling tower, a gas inlet pipe, a gas turbine air inlet pipe, a gas turbine smoke exhaust pipe and a boiler smoke exhaust pipe, wherein one end of the air inlet pipe is connected to the surface cooler; two ends of the gas turbine air inlet pipe are respectively connected to the surface cooler and the gas turbine; one end of the boiler smoke exhaust pipe is connected to the waste heat boiler; the freezing water circulation loop is arranged between the surface cooler and the absorption refrigerator; a freezing water circulation pump is arranged on the freezing water circulation loop; the cooling water circulation loop is arranged between the cooling tower and the absorption refrigerator. By virtue of the waste heat utilization based gas turbine inlet air cooling device, the waste heat of the power plant can be sufficiently utilized.
Description
Technical field
The present invention relates to a kind of combustion machine air inlet cooling unit, especially relate to a kind of combustion machine air inlet cooling unit based on UTILIZATION OF VESIDUAL HEAT IN, can effectively reduce the gas temperature that enters gas turbine, effectively improve the generated output performance of gas turbine unit under the hot environment.
Background technique
Gas turbine is that a kind of gas take continuous-flow is as working medium, the rotary power machinery of thermal power transfer as mechanical work.In power industry, Gas Turbine Generating Units can be started rapidly in without the situation of extraneous power supply, and mobility is good, drives peak load and as emergency use, can ensure preferably the safe operation of electrical network with its in electrical network, is widely used.But when combustion machine air inlet temperature raises, can cause the situations such as unit output deficiency, main cause by following some.
(1), because gas turbine is the power equipment of constant volume flow, and the air quality that flows through depends on air density, and temperature more high density is lower, cause the MAF that sucks gas compressor to reduce, the capacity for work 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, when namely atmospheric temperature raise, power input to compressor increased, the cleared-out power of gas turbine reduces.
(3), when atmospheric temperature raises, even the combustion gas initial temperature before generating unit speed and the combustion gas turbine keeps constant, the compression ratio of gas compressor will descend to some extent, this will cause the acting amount of combustion gas turbine to reduce, its delivery temperature but can increase.
In the peak of power consumption period in summer, Yin Wendu is higher, and the unit output that causes descends, and peak modulation capacity weakens greatly.According to the study, 1 ℃ of maximum of ambient temperature rising can cause the specified generating capacity of gas turbine to descend 1%.Therefore, necessaryly take measures to reduce combustion machine intake temperature, to ensure that the combustion machine is exerted oneself and peaking performance under the hot environment.
At present, main combustion machine Inlet Air Cooling Technology is divided into direct contact type and mediate contact formula two large classes both at home and abroad.Wherein the direct contact type cooling technology mainly refers to evaporation cooling technique, uses the method air can only be cooled at most be subjected to environmental constraints larger near the wet-bulb temperature, is applicable to dry hot area.
The cooling of mediate contact formula is mainly by several forms such as the cooling of ice cold-storage, LNG cold energy use cooling, direct vapor compression coolings.Wherein, the cooling of ice cold-storage is the latent heat accumulator that utilizes ice, and the method equipment therefor floor space is large, and power consumption is large, is applicable to time-of-use tariffs and differs larger area.LNG cold energy use cooling is only applicable to the area that there is the LNG accumulator plant locality.The direct vapor compression cooling obtains low-temperature receiver take power consumption as cost, maximum shortcoming is to need power consumption, especially will use a large amount of peaks electricity in peak period, has weakened the peak modulation capacity of variable load plant.And the working medium that its refrigerator uses has destruction to ozonosphere, has stopped making.
Have also that to adopt other modes to carry out the combustion machine charge-cooling, as open day be on 01 23rd, 1991, publication number is in the Chinese patent of CN2069929, a kind of device of air inlet temp. reduction by using waste heat of combustion engine flue gas is disclosed, this device is at the smokejack opening of combustion machine, utilize valve control high-temperature flue gas to enter the absorption refrigeration device, be directly changed into chilled water, chilled water with circulation reduces the empty temperature of burning machine inlet, and by the self-cleaning air cooling device, improve quality and the unit intensity of input combustion machine air, improve the combustion machine and exert oneself and power; Because the chilled water in the absorption refrigeration device is difficult to effectively be cooled off, thereby reduced the cooling effect to the burning machine inlet air temperature.
In sum, also do not have at present a kind of reasonable in design, can take full advantage of power plant self waste heat, can effectively improve the combustion machine air inlet cooling unit based on UTILIZATION OF VESIDUAL HEAT IN of gas turbine unit generated output performance under the hot environment.
Summary of the invention
The object of the invention is to overcome above shortcomings in the prior art, and provide a kind of reasonable in design, power plant self waste heat can be taken full advantage of, the combustion machine air inlet cooling unit based on UTILIZATION OF VESIDUAL HEAT IN of gas turbine unit generated output performance under the hot environment can be effectively improved.
The present invention addresses the above problem the technological scheme that adopts: should comprise gas turbine based on the combustion machine air inlet cooling unit of UTILIZATION OF VESIDUAL HEAT IN, its structural feature is: also comprise surface cooler, exhaust heat boiler, drive steam tube, Absorption Refrigerator, the chilled water circulation loop, the chilled water circulating water pump, cooling water circulation loop, the cooling water circulation water pump, cooling tower, the gas inlet pipe, combustion machine suction tude, combustion machine smoke-ejecting pipe and boiler exhaust gas pipe, one end of described gas inlet pipe is connected on the surface cooler, the two ends of described combustion machine suction tude are connected on surface cooler and the gas turbine, the two ends of described combustion machine smoke-ejecting pipe are connected on gas turbine and the exhaust heat boiler, one end of described boiler exhaust gas pipe is connected on the exhaust heat boiler, described driving steam tube is installed between exhaust heat boiler and the Absorption Refrigerator, described chilled water circulation loop is installed between surface cooler and the Absorption Refrigerator, described chilled water circulating water pump is installed on the chilled water circulation loop, described cooling water circulation loop is installed between cooling tower and the Absorption Refrigerator, and described cooling water circulation water pump is installed on the cooling water circulation loop.So that the low parameter steam driven Absorption Refrigerator that the present invention utilizes exhaust heat boiler to produce produces cryogenic freezing water, enter the surface cooler that is arranged in combustion machine air inlet place by the chilled water circulation loop thus, air inlet is cooled off to the combustion machine; The present invention takes full advantage of residual heat of electric power plant, reduces combustion machine intake air temperature, effectively solves the problem of Gas Turbine Output deficiency under the summer high temperature environment; The present invention have power consumption less, be subjected to water condition affect little, can take full advantage of the characteristics such as waste heat.
As preferably, be provided with vaporizer, adsorber, generator and condenser on the Absorption Refrigerator of the present invention.
As preferably, be provided with dehumidifier in the surface cooler of the present invention.
The present invention compared with prior art has the following advantages and effect: (1) the present invention utilizes combustion machine unit waste heat, meets national energy-saving and reduces discharging industrial policy.(2) the present invention can produce cryogenic freezing water in order to cooling off the air inlet of combustion machine, good cooling results, and it is less affected by water source and external condition.(3) the present invention is when cooling load changes greatly, and as changing 20%～100% the time, its efficient maintains a higher level substantially.(4) do not have crucial rotatable parts among the present invention, the operation noise is low, and the regular maintenance expense is low.(5) the present invention adopts the working medium environmentally safe.
Description of drawings
Fig. 1 is based on the structural representation of the combustion machine air inlet cooling unit of UTILIZATION OF VESIDUAL HEAT IN in the embodiment of the invention.
Fig. 2 be in the embodiment of the invention based on the combustion machine air inlet cooling unit of UTILIZATION OF VESIDUAL HEAT IN when the operation, indicate the structural representation of media flow direction.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and by embodiment, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment.
Referring to Fig. 1 to Fig. 2, combustion machine air inlet cooling unit based on UTILIZATION OF VESIDUAL HEAT IN in the present embodiment comprises surface cooler 1, gas turbine 2, exhaust heat boiler 3, drive steam tube 4, Absorption Refrigerator 5, chilled water circulation loop 6, chilled water circulating water pump 7, cooling water circulation loop 8, cooling water circulation water pump 9, cooling tower 10, gas inlet pipe 11, combustion machine suction tude 12, combustion machine smoke-ejecting pipe 13 and boiler exhaust gas pipe 14, wherein, be provided with vaporizer on the Absorption Refrigerator 5, adsorber, generator and condenser, the daily little power consumption of Absorption Refrigerator 5, safeguard that simply operating cost is lower.Be provided with dehumidifier in the surface cooler 1.
An end of gas inlet pipe 11 is connected on the surface cooler 1 in the present embodiment, so that extraneous high temperature air can enter surface cooler 1 by gas inlet pipe 11, surface cooler 1 can cool off high-temperature gas, thereby reduces the temperature of air.
The two ends of present embodiment Middle combustion engine suction tude 12 are connected on surface cooler 1 and the gas turbine 2, so that can enter gas turbine 2 along combustion machine suction tude 12 through the gas of surface cooler 1 cooling, because it is lower to enter the gas temperature of gas turbine 2, the density of gas is larger, thereby the gaseous mass of guaranteeing to enter gas turbine 2 is more, has ensured the generated output performance of gas turbine 2.Can produce the flue gas of high temperature after gas turbine 2 operations.
The two ends of present embodiment Middle combustion engine smoke-ejecting pipe 13 are connected on gas turbine 2 and the exhaust heat boiler 3, so that the high-temperature flue gas that produces after gas turbine 2 operations can enter in the exhaust heat boiler 3 along combustion machine smoke-ejecting pipe 13, heat energy in this high-temperature flue gas is utilized by exhaust heat boiler 3, improved the utilization ratio of the energy, at this moment, the temperature of high-temperature flue gas reduces, and has become low-temperature flue gas.
An end of boiler exhaust gas pipe 14 is connected on the exhaust heat boiler 3 in the present embodiment, so that low-temperature flue gas can enter atmosphere along boiler exhaust gas pipe 14.Because the temperature of flue gas is lower, avoid atmosphere is produced thermo-pollution, be conducive to energy-conserving and environment-protective.
Driving steam tube 4 in the present embodiment is installed between exhaust heat boiler 3 and the Absorption Refrigerator 5, so that the partial heat energy in the exhaust heat boiler 3 can be transported in the Absorption Refrigerator 5 by driving steam tube 4, these heat energy are as driving heat source, can effectively guarantee the normal operation of Absorption Refrigerator 5, improve the utilization ratio of the energy, be conducive to energy-saving and emission-reduction.
Chilled water circulation loop 6 in the present embodiment is installed between surface cooler 1 and the Absorption Refrigerator 5, chilled water circulating water pump 7 is installed on the chilled water circulation loop 6, during use, be full of medium in chilled water circulation loop 6, the medium that can control in the chilled water circulation loop 6 by chilled water circulating water pump 7 flows.Under the effect of chilled water circulation loop 6, can carry out thermal energy exchange between surface cooler 1 and the Absorption Refrigerator 5, heat energy in the surface cooler 1 is transferred in the Absorption Refrigerator 5, thereby guaranteed that surface cooler 1 more effectively cools off other.
Cooling water circulation loop 8 in the present embodiment is installed between cooling tower 10 and the Absorption Refrigerator 5, cooling water circulation water pump 9 is installed on the cooling water circulation loop 8, during use, be full of medium in cooling water circulation loop 8, the medium that can control in the cooling water circulation loop 8 by cooling water circulation water pump 9 flows.Under the effect of cooling water circulation loop 8, so that can carry out thermal energy exchange between cooling tower 10 and the Absorption Refrigerator 5, heat energy in the Absorption Refrigerator 5 is transferred in the cooling tower 10, thereby guaranteed the more effectively heat energy in the sorbent surface cooler 1 of Absorption Refrigerator 5.
Workflow based on the combustion machine air inlet cooling unit of UTILIZATION OF VESIDUAL HEAT IN in the present embodiment is as follows: exhaust heat boiler 3 low pressure steams are introduced lithium-bromide absorption-type refrigerating machine 5 as driving heat source, the cryogenic freezing water of producing is got back in the Absorption Refrigerator 5 after chilled water absorbs heat in surface cooler 1 and is emitted heat for reducing the intake temperature of gas turbine 2.Cooling water absorbs low pressure steam and chilled water liberated heat in Absorption Refrigerator 5, and externally emits heat in the cooling tower 10, recycles.
The daily little power consumption of the Absorption Refrigerator 5 in the present embodiment safeguards that simply operating cost is lower.Surface cooler 1 can be arranged in gas turbine 2 air inlet ingress, and is provided with dehumidifier.Intake temperature descends and causes that the water of condensation of avoiding separating out impacted safely gas turbine unit when humidity increased.The cooling tower that cooling tower 10 is used for cooling refrigeration machine recirculated cooling water can be arranged nearby, reduces the feed water pump wasted work, can also merge with the gas turbine unit cooling tower to use Lower early investment and operating cost.Chilled water circulating pump 7 and cooling water circulating pump 9 provide power for the chilled water in the system and cooling water circulation.Chilled water circulation loop 6 is connected to connect above-mentioned each constituent element with cooling water circulation loop, its layout can be optimized layout according to field condition, to reduce the circulating water pump wasted work.Can comprise the relevant auxiliaries such as supervisory system and switch, valve based on the combustion machine air inlet cooling unit of UTILIZATION OF VESIDUAL HEAT IN in the present embodiment, be used for monitoring and the control of system's real time execution situation, possess and gas turbine 2 control system information interaction functions, can realize telecontrol.
Before extraneous air enters gas turbine 2, carry out cooling processing through surface cooler 1 first, the cryogenic freezing water that Absorption Refrigerator 5 is produced enters surface cooler 1 via chilled water circulation loop 6, chilled water carries out with high temperature air in surface cooler 1 that temperature raises after the heat exchange, gets back to Absorption Refrigerator 5 by chilled water circulation loop 6 again and again freezes.Chilled water circulating pump 7 provides power for chilled water in the lasting circulation of 1 of Absorption Refrigerator 5 and surface cooler.
Exhaust heat boiler 3 utilizes the smoke discharging residual heat of gas turbine 2 to generate high-temperature steam, the part high-temperature steam is introduced Absorption Refrigerator 5 as the driving heat source of refrigeration, Absorption Refrigerator 5 makes the chilled water cooling from chilled water circulation loop 6 absorbing heats under the driving of high-temperature steam, the heat that more than enters Absorption Refrigerator 5 returns 8 by cooling water circulation and takes out of, via cooling tower 10 with heat discharged to atmosphere, cooling water circulating pump 9 provides power for cooling water in the lasting circulation of 10 of Absorption Refrigerator 5 and cooling towers.
The little power consumption of the Absorption Refrigerator 5 in the present embodiment, operation maintenance is simple, environmentally safe, noise is little.Can be provided with dehumidifier in the surface cooler 1, avoid causing that water of condensation was on the impact of gas turbine when humidity increased because intake temperature reduces.The power consumption of the combustion machine air inlet cooling unit in the present embodiment is mainly derived from the wasted work of cooling water circulating pump 9 and chilled water circulating pump 7, the cooling tower 10 that adopts, chilled water circulation loop 6 and cooling water circulation loop 8 can be optimized layout according to field condition, to reduce the circulating water pump wasted work.If conditions permit also can access cooling water in the unit circulating water cooling system of gas turbine 2, to reduce system's initial cost and operating cost.The supervisory system that adopts among the present invention can be carried out information interaction with the gas turbine unit control system, satisfying the needs of telecontrol, and guarantees the safe operation of generator set.
The low parameter steam driven Absorption Refrigerator 5 that combustion machine air inlet cooling unit in the present embodiment utilizes exhaust heat boiler 3 to produce, produce cryogenic freezing water, enter the surface cooler 1 that is arranged in combustion machine air inlet place by chilled water circulation loop 6, air inlet is cooled off to the combustion machine.This combustion machine air inlet cooling unit takes full advantage of residual heat of electric power plant, reduces combustion machine intake air temperature, effectively solves the problem of gas turbine 2 undercapacities under the summer high temperature environment.Compare with other cooling ways, have power consumption less, be subjected to water condition affect little, can take full advantage of the characteristics such as waste heat.
In addition, need to prove, 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 only is to structure example of the present invention explanation.Allly conceive equivalence variation or the simple change that described structure, feature and principle are done according to patent of the present invention, be included in the protection domain of patent of the present invention.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (3)
1. combustion machine air inlet cooling unit based on UTILIZATION OF VESIDUAL HEAT IN, comprise gas turbine, it is characterized in that: also comprise surface cooler, exhaust heat boiler, drive steam tube, Absorption Refrigerator, the chilled water circulation loop, the chilled water circulating water pump, cooling water circulation loop, the cooling water circulation water pump, cooling tower, the gas inlet pipe, combustion machine suction tude, combustion machine smoke-ejecting pipe and boiler exhaust gas pipe, one end of described gas inlet pipe is connected on the surface cooler, the two ends of described combustion machine suction tude are connected on surface cooler and the gas turbine, the two ends of described combustion machine smoke-ejecting pipe are connected on gas turbine and the exhaust heat boiler, one end of described boiler exhaust gas pipe is connected on the exhaust heat boiler, described driving steam tube is installed between exhaust heat boiler and the Absorption Refrigerator, described chilled water circulation loop is installed between surface cooler and the Absorption Refrigerator, described chilled water circulating water pump is installed on the chilled water circulation loop, described cooling water circulation loop is installed between cooling tower and the Absorption Refrigerator, and described cooling water circulation water pump is installed on the cooling water circulation loop.
2. the combustion machine air inlet cooling unit based on UTILIZATION OF VESIDUAL HEAT IN according to claim 1 is characterized in that: be provided with vaporizer, adsorber, generator and condenser on the described Absorption Refrigerator.
3. the combustion machine air inlet cooling unit based on UTILIZATION OF VESIDUAL HEAT IN according to claim 1 is characterized in that: be provided with dehumidifier in the described surface cooler.
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| CN201310245923.9A CN103352761B (en) | 2013-06-20 | 2013-06-20 | Combustion machine air inlet cooling device based on UTILIZATION OF VESIDUAL HEAT IN |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986906A (en) * | 2016-07-01 | 2016-10-05 | 南京东辰节能科技有限公司 | Air inlet temperature adjusting system for combustion gas turbine |
| CN106050430A (en) * | 2016-07-11 | 2016-10-26 | 南京力合联升电力节能科技有限公司 | Inlet air cooling control system for gas turbine |
| CN106050424A (en) * | 2016-07-11 | 2016-10-26 | 南京力合联升电力节能科技有限公司 | Efficient intake air cooling and heating system for gas turbine |
| CN106150700A (en) * | 2016-07-15 | 2016-11-23 | 宋君弟 | Sea water cooling, the efficient combustion engine inlet gas cooling device of mixing low-temperature receiver |
| 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 |
| CN111322786A (en) * | 2020-03-11 | 2020-06-23 | 中国能源建设集团广东省电力设计研究院有限公司 | Temperature adjusting system based on combined cycle generator set and control method |
| WO2020248684A1 (en) * | 2019-06-11 | 2020-12-17 | 山东省食品发酵工业研究设计院 | Total heat recovery type integrated gas heat pump heat supply unit and application thereof |
| CN112302806A (en) * | 2020-11-21 | 2021-02-02 | 西安热工研究院有限公司 | Gas turbine air inlet single-loop cooling system and method utilizing refrigeration capacity allowance of refrigeration station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105986906A (en) * | 2016-07-01 | 2016-10-05 | 南京东辰节能科技有限公司 | Air inlet temperature adjusting system for combustion gas turbine |
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| CN106150700A (en) * | 2016-07-15 | 2016-11-23 | 宋君弟 | Sea water cooling, the efficient combustion engine inlet gas cooling device of mixing low-temperature receiver |
| 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 |
| WO2020248684A1 (en) * | 2019-06-11 | 2020-12-17 | 山东省食品发酵工业研究设计院 | Total heat recovery type integrated gas heat pump heat supply unit and application thereof |
| CN111322786A (en) * | 2020-03-11 | 2020-06-23 | 中国能源建设集团广东省电力设计研究院有限公司 | Temperature adjusting system based on combined cycle generator set and control method |
| CN112302806A (en) * | 2020-11-21 | 2021-02-02 | 西安热工研究院有限公司 | Gas turbine air inlet single-loop cooling system and method utilizing refrigeration capacity allowance of refrigeration station |
| CN112302806B (en) * | 2020-11-21 | 2024-03-26 | 西安热工研究院有限公司 | Gas turbine air inlet single-loop cooling system and method utilizing refrigeration station cold energy allowance |
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Address after: Hangzhou City, Zhejiang Province, 310030 Xihu District science and Technology Park of West Lake Park Road, No. 10 Patentee after: Huadian Power Science Research Institute Co., Ltd. Address before: Hangzhou City, Zhejiang Province, 310030 Xihu District science and Technology Park of West Lake Park Road, No. 10 Patentee before: China Huadian Electric Research Institute |