CN109611210A - Gas turbine inlet air temperature control system - Google Patents
Gas turbine inlet air temperature control system Download PDFInfo
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- CN109611210A CN109611210A CN201910112662.0A CN201910112662A CN109611210A CN 109611210 A CN109611210 A CN 109611210A CN 201910112662 A CN201910112662 A CN 201910112662A CN 109611210 A CN109611210 A CN 109611210A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 238000001816 cooling Methods 0.000 claims abstract description 85
- 238000010438 heat treatment Methods 0.000 claims abstract description 77
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000008676 import Effects 0.000 claims abstract description 22
- 239000002826 coolant Substances 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims description 109
- 239000003507 refrigerant Substances 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 239000003546 flue gas Substances 0.000 claims description 11
- 239000002918 waste heat Substances 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
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- 238000000034 method Methods 0.000 claims description 5
- 238000009530 blood pressure measurement Methods 0.000 claims description 4
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- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052794 bromium Inorganic materials 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000567 combustion gas Substances 0.000 claims description 2
- 238000007710 freezing Methods 0.000 claims 1
- 230000008014 freezing Effects 0.000 claims 1
- 238000010977 unit operation Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 21
- 239000000498 cooling water Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
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- 238000012423 maintenance Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
-
- 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
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
- F02C7/047—Heating to prevent icing
-
- 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
-
- 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
- F02C7/16—Cooling of plants characterised by cooling medium
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The present invention provides a kind of gas turbine inlet air temperature control systems, including inlet gas cooling subsystem and inlet air heating subsystem；Inlet gas cooling subsystem includes cooling heat exchange device, the air inlet heat-exchanger rig of air inlet for gas turbine 1 to be arranged in, the chilled water water inlet line for being connected to the outlet of cooling heat exchange device and the import of air inlet heat-exchanger rig, the import of connection cooling heat exchange device and the chilled water water return pipeline of the outlet of air inlet heat-exchanger rig and the coolant circulation pump being set on chilled water water inlet line or chilled water water return pipeline；Inlet air heating subsystem includes the heat cycles pump for heating heat-exchanger rig, air inlet heat-exchanger rig, the outlet of connection heating heat-exchanger rig and the hot water inlet pipe road of the import of air inlet heat-exchanger rig, being connected to hot water backwater's pipeline of the import of heating heat-exchanger rig and the outlet of air inlet heat-exchanger rig and being set on hot water inlet pipe road or hot water backwater's pipeline.Efficiency when unit operation at part load is improved, the power output when oepration at full load of high temperature period is increased.
Description
Technical field
The present invention relates to combustion engine equipment technical field, in particular to a kind of gas turbine inlet air temperature control system.
Background technique
Because using clean natural gas, as fuel, gas turbine power generation has the high thermal efficiency, rapid starting/stopping and peak regulation energy
The few advantages such as low with carbon emission of power, disposal of pollutants, have been widely used.
But following problems are still had using the power plant of gas turbine at present:
1, high humidity low temperature season, gas handling system easily wet stifled ice are stifled
It is influenced by weather, GTCC power plant is often subject to the puzzlement of winter haze and rain and snow weather, and gas turbine will appear wet
The stifled operation risk of stifled and ice.When winter haze and rain and snow weather, air themperature is low and humidity is high, and the vapor in air is close
Saturation state.Air, due to the cooling effect that throttles, has part elutriation and goes out to cause filter profit, leads to when flowing through filter
Flow area reduce, cause filter differential pressure to steeply rise, finally cause because intake pressure difference is higher gas turbine be forced load down or
Chaser seriously affects operational safety of the combustion engine under high humidity microthermal climate.
2, long term portion load operation, the combustion engine thermal efficiency are lower
Since power plant, China majority is regulating units, gas turbine, which is in throughout the year under partial load condition, to be run.With it is completely negative
Lotus operating condition is compared, and the efficiency of the gas turbine of partial load condition operation is far below the operating condition of oepration at full load.By to power plant
Operational Data Analysis, discovery gas turbine load is certain, and when intake air temperature (environment temperature) is higher, gas turbine proficiency also has
Higher level.
Such as table 1, shown in the performance data of certain GE9171E gas turbine, intake air temperature (environment temperature) increases 20.8 DEG C, combustion
Engine efficiency promotes about 0.6 percentage point.
The performance data of certain the GE 9171E gas turbine of table 1
3, dispatching of power netwoks demand is not achieved in summer oepration at full load
Due to the inherent characteristic of gas turbine, when summer temp is higher, gas turbine is contributed at full capacity to be often far below
Power output under ISO operating condition or performance guarantee operating condition.By taking GE 9171E gas turbine as an example, under ISO operating condition, power output is at full capacity
128MW, but under 30 DEG C of air themperature, 60% operating condition of air humidity, power output is only 113MW at full capacity.But since summer is
When electrical load requirements are higher, dispatching of power netwoks demand is not achieved in power plants generating electricity load often.
To sum up, intake air temperature plays most important problem to gas turbine.
Therefore, how intake air temperature is controlled, it has also become those skilled in the art's urgent problem to be solved.
Summary of the invention
In view of this, the present invention provides a kind of gas turbine inlet air temperature control systems, in order to control intake air temperature.
A kind of gas turbine inlet air temperature control system, including inlet gas cooling subsystem and inlet air heating subsystem；
The inlet gas cooling subsystem includes that the air inlet of cooling heat exchange device, air inlet for gas turbine to be arranged in is changed
Thermal, the chilled water water inlet line of the outlet of the connection cooling heat exchange device and the import of the air inlet heat-exchanger rig, company
Lead to the chilled water water return pipeline of the import of the cooling heat exchange device and the outlet of the air inlet heat-exchanger rig and is set to described
Coolant circulation pump on chilled water water inlet line or the chilled water water return pipeline；
The inlet air heating subsystem includes heating heat-exchanger rig, the air inlet heat-exchanger rig, the connection heating heat exchange
The hot water inlet pipe road of the outlet of device and the import of the air inlet heat-exchanger rig, connection it is described heating heat-exchanger rig import and
Hot water backwater's pipeline of the outlet of the air inlet heat-exchanger rig and it is set to the hot water inlet pipe road or the hot water return pipe
Heat cycles pump on road；
Wherein, in the inlet gas cooling subsystem operational process, the heat transferring medium in the air inlet heat-exchanger rig is cold
Freeze water；In the inlet air heating subsystem, the heat transferring medium in the air inlet heat-exchanger rig is hot water.
It preferably, further include for detecting the inlet gas cooling subsystem in above-mentioned gas turbine inlet air temperature control system
The measuring system of numerical value is measured in system and the inlet air heating subsystem；
The measuring system includes temperature measuring device, humidity measuring instrument, device for pressure measurement and flow measurement device.
Preferably, in above-mentioned gas turbine inlet air temperature control system, the cooling heat exchange device and the heating exchange heat
Device is switchably connected to the air inlet heat-exchanger rig.
Preferably, in above-mentioned gas turbine inlet air temperature control system, the quantity of heat cycles pump is multiple and simultaneously
It is coupled on the hot water inlet pipe road or hot water backwater's pipeline；
And/or the quantity of the coolant circulation pump is multiple and is parallel to the chilled water water inlet line or chilled water time
On waterpipe.
Preferably, in above-mentioned gas turbine inlet air temperature control system, the inlet air heating subsystem further includes being located at institute
Heat cycles are stated to pump the side close to the air inlet heat-exchanger rig and be connected to the hot water inlet pipe road and the hot water return pipe
The heating bye-pass in road is provided with hot water flow regulating valve on the heating bye-pass；
And/or the inlet gas cooling subsystem further includes being located at the coolant circulation pump close to the air inlet heat-exchanger rig
Side and be connected on the chilled water water inlet line or the chilled water water return pipeline chilled water water inlet line and described
The cooling bye-pass of chilled water water return pipeline is provided with chilled water flow adjustable valve on the cooling bye-pass.
Preferably, in above-mentioned gas turbine inlet air temperature control system, the heating heat-exchanger rig is for being arranged remaining
The tail portion of heat boiler, and the smoke heat replacing device of the flue gas heat exchange using the gas turbine.
Preferably, in above-mentioned gas turbine inlet air temperature control system, the cooling heat exchange device is bromine cooling machine.
Preferably, in above-mentioned gas turbine inlet air temperature control system, further include and the system in the cooling heat exchange device
The steam source pipeline of cold medium heat exchange and the condensate pump being series on the steam source pipeline；
The steam source pipeline has the import being connected to the steam extraction opening of steam turbine, the steam source pipeline
With the outlet that pipeline is connected between condenser and the condensate pump；
The condensate pump is located on the pipeline section in the condenser exit.
Preferably, in above-mentioned gas turbine inlet air temperature control system, further include desuperheat water pipe and be set to the steam
The steam converter valve on steam source pipeline section between the import of heat source pipeline and the cooling heat exchange device, the desuperheat water pipe
One end be connected to the steam converter valve, the other end of the desuperheat water pipe is connected to the condensate pump water outlet.
Preferably, in above-mentioned gas turbine inlet air temperature control system, steam stream is provided on the steam source pipeline
Adjustable valve.
Preferably, in above-mentioned gas turbine inlet air temperature control system, it is in series with life on the steam source pipeline and supplies
Water- to-water heat exchanger, the fluid in the steam source pipeline pass through the fluid in the living water heat exchanger and living water pipeline
Heat exchange.
Preferably, in above-mentioned gas turbine inlet air temperature control system, the air inlet heat-exchanger rig is located at the combustion gas wheel
Between the air inlet rough filtering of machine and the air inlet refined filtration of the gas turbine；The dehumidifier of the gas turbine is located at air inlet heat exchange
Between device and the air inlet refined filtration.
Preferably, in above-mentioned gas turbine inlet air temperature control system, the air inlet heat-exchanger rig is the hot charging of Air-Water pipe
It sets.
It can be seen from the above technical scheme that gas turbine inlet air temperature control system provided by the invention, is needing
When being heated to the air at the air inlet of gas turbine, the operation of inlet air heating subsystem.Heat-exchanger rig starting is heated, due to
Heating heat-exchanger rig is connected to air inlet heat-exchanger rig by hot water inlet pipe road and hot water backwater's pipeline, so that heating medium can be with
In heating heat-exchanger rig and air inlet heat-exchanger rig internal circulation flow.That is, heating heat-exchanger rig passes through hot water inlet pipe road Xiang Jinqi
Heat-exchanger rig provides heating medium, and heating medium carries out after entering air inlet heat-exchanger rig with the air inlet runner for gas turbine inlet air
It mutually exchanges heat, the air in air inlet runner increases temperature by absorbing the heat in heating medium；Also, exothermic system
Thermal medium flows back to heating heat-exchanger rig by hot water backwater's pipeline, and absorbs heat and recycle again.By improving gas turbine
Inlet air temperature, avoid the occurrence of gas handling system is wet stifled, ice is stifled, and effectively increase partial load condition
The efficiency of lower gas turbine and combined cycle unit.When needing the air at the air inlet to gas turbine to cool down, into
The operation of air cooling subsystem.The starting of cooling heat exchange device, due to cooling heat exchange device and air inlet heat-exchanger rig by chilled water into
Waterpipe and the connection of chilled water water return pipeline, so that refrigerant is in cooling heat exchange device and air inlet heat-exchanger rig inner recirculation flow
It is dynamic.That is, cooling heat exchange device by chilled water water inlet line to air inlet heat-exchanger rig provide refrigerant, refrigerant enter into
It is mutually exchanged heat after gas heat-exchanger rig with the air inlet runner for gas turbine inlet air, is absorbed in air inlet runner by refrigerant
Air heat so that the temperature of air reduces；Also, the refrigerant for absorbing heat is flowed back to by chilled water water return pipeline
Cooling heat exchange device, and release heat and recycle again.By the temperature of the inlet air of regulating gas turbine, unit portion is improved
Divide efficiency when load operation, increases the power output when oepration at full load of high temperature period.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram of gas turbine inlet air temperature control system provided by the invention.
Specific embodiment
The invention discloses a kind of gas turbine inlet air temperature control systems, in order to control intake air temperature.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to FIG. 1, the embodiment of the invention provides a kind of gas turbine inlet air temperature control system, including inlet gas cooling
Subsystem and inlet air heating subsystem；Inlet gas cooling subsystem includes cooling heat exchange device 6, for gas turbine 1 to be arranged in
The chilled water of the air inlet heat-exchanger rig 9 of air inlet, the outlet for being connected to cooling heat exchange device 6 and the import of air inlet heat-exchanger rig 9 into
Waterpipe, be connected to cooling heat exchange device 6 import and air inlet heat-exchanger rig 9 outlet chilled water water return pipeline and be set to cold
Freeze the coolant circulation pump on water water inlet line or chilled water water return pipeline；Inlet air heating subsystem include heating heat-exchanger rig 12,
Air inlet heat-exchanger rig 9, connection heat the hot water inlet pipe road of the outlet of heat-exchanger rig 12 and the import of air inlet heat-exchanger rig 9, connect
Lead to hot water backwater's pipeline of the import of heating heat-exchanger rig 12 and the outlet of air inlet heat-exchanger rig 9 and is set to hot water inlet pipe road
Or the heat cycles pump on hot water backwater's pipeline.Wherein, in inlet gas cooling subsystem operational process, in air inlet heat-exchanger rig 9
Heat transferring medium be chilled water；In inlet air heating subsystem, the heat transferring medium in air inlet heat-exchanger rig 9 is hot water.
Gas turbine inlet air temperature control system provided in an embodiment of the present invention is needing at the air inlet to gas turbine
Air when being heated, the operation of inlet air heating subsystem.Heat heat-exchanger rig 12 start, due to heating heat-exchanger rig 12 with into
Gas heat-exchanger rig 9 is connected to by hot water inlet pipe road and hot water backwater's pipeline, allows heating medium in heating heat-exchanger rig
12 with 9 internal circulation flow of air inlet heat-exchanger rig.That is, heating heat-exchanger rig 12 passes through hot water inlet pipe road to air inlet heat-exchanger rig 9
Heating medium is provided, heating medium is mutually exchanged after entering air inlet heat-exchanger rig 9 with the air inlet runner for 1 air inlet of gas turbine
Heat, the air in air inlet runner increase temperature by absorbing the heat in heating medium；Also, exothermic heating medium
Heating heat-exchanger rig 12 is flowed back to by hot water backwater's pipeline, and absorbs heat and recycles again.By improving entering for gas turbine
The temperature of mouth air avoids the occurrence of gas handling system is wet stifled, ice is stifled, and effectively increases and fire under partial load condition
The efficiency of gas-turbine and combined cycle unit.When needing the air at the air inlet to gas turbine to cool down, air inlet is cold
But subsystem is run.Cooling heat exchange device 6 starts, since cooling heat exchange device 6 and air inlet heat-exchanger rig 9 pass through chilled water water inlet
Pipeline and the connection of chilled water water return pipeline, so that refrigerant is in cooling heat exchange device 6 and 9 inner recirculation flow of air inlet heat-exchanger rig
It is dynamic.That is, cooling heat exchange device 6 provides refrigerant to air inlet heat-exchanger rig 9 by chilled water water inlet line, refrigerant enters
It is mutually exchanged heat after air inlet heat-exchanger rig 9 with the air inlet runner for 1 air inlet of gas turbine, inlet air flow is absorbed by refrigerant
The heat of air in road, so that the temperature of air reduces；Also, the refrigerant for absorbing heat passes through chilled water water return pipeline
Cooling heat exchange device 6 is flowed back to, and releases heat and recycles again.By the temperature of the inlet air of regulating gas turbine, improve
Efficiency when unit operation at part load increases the power output when oepration at full load of high temperature period.
In order to avoid fluid drives in the wrong direction, it is provided with first check-valve 19 at the heat exchange inlet port of air inlet heat-exchanger rig 9, air inlet is changed
The heat exchange outflux of thermal 9 is provided with second check-valve 20.
In order to ensure the stable operation of system, gas turbine inlet air temperature control system further includes for detecting the air inlet
The measuring system of numerical value is measured in cooling subsystem and the inlet air heating subsystem；Measuring system include temperature measuring device,
Humidity measuring instrument, device for pressure measurement and flow measurement device.
In the present embodiment, temperature measuring device includes:
For detecting the preposition air themperature detection device 40 of the air themperature before entering air inlet heat-exchanger rig 9 and being used for
The postposition air themperature detection device 41 of air themperature after detection outflow air inlet heat-exchanger rig 9.By above-mentioned setting, effectively
The detection to the air themperature of air inlet is improved, in order to be adjusted.
It is set in inlet air heating subsystem, for detecting the preposition cigarette of the flue-gas temperature before entering smoke heat replacing device
Gas temperature-detecting device 49 and the postposition flue-gas temperature detection dress for going out the flue-gas temperature after smoke heat replacing device for detection stream
Set 50.By above-mentioned setting, the detection to the air themperature of air inlet is effectively increased, in order to be adjusted.Wherein, above-mentioned
Smoke heat replacing device is to heat heat-exchanger rig 12, using the heat-exchanger rig of the flue gas heat exchange of gas turbine 1, and is set to combustion
The outlet side of gas-turbine 1.
The inlet temperature detection device 45 that is set at the heat exchange inlet port of air inlet heat-exchanger rig 9 and it is set to air inlet heat exchange
The outlet temperature detection device 46 of the heat exchange outflux of device 9.Adjusting control is further facilitated.
Further include vapor (steam) temperature detection device 52, is detailed below.
In the present embodiment, humidity measuring instrument includes:
For detecting the preposition air humidity detection device 42 of the air humidity before entering air inlet heat-exchanger rig 9 and being used for
The postposition air humidity detection device 43 of air humidity after detection outflow air inlet heat-exchanger rig 9.By above-mentioned setting, effectively
The detection to the air humidity of air inlet is improved, in order to be adjusted.
In the present embodiment, device for pressure measurement includes:
For detecting the precondition pressure of the heat transferring medium (refrigerant or heating medium) before entering air inlet heat-exchanger rig 9
Detection device 47 and postposition for detecting the heat transferring medium (refrigerant or heating medium) after outflow air inlet heat-exchanger rig 9
Pressure-detecting device 48.By the pressure detecting to outflow and the heat transferring medium for flowing into air inlet heat-exchanger rig 9, in order to be adjusted
Section.
Further include steam pressure detection device 51, is detailed below.
Further, further include the air inlet refined filtration 11 for being set to gas turbine 1 two sides be provided with air inlet refined filtration pressure difference dress
Set 44.
In the present embodiment, flow measurement device includes:
For detecting the fluid flowmeter for entering the heat transferring medium (refrigerant or heating medium) of air inlet heat-exchanger rig 9
17。
It further include the steam-flow meter 18 for detecting the charge flow rate of steam turbine 3.
In the present embodiment, cooling heat exchange device 6 is switchably connected to air inlet heat-exchanger rig 9 with heating heat-exchanger rig 12.
That is, when needing the air at the air inlet to gas turbine to cool down, the operation of inlet gas cooling subsystem.At this point, by cutting
It changes and realizes that cooling heat exchange device 6 is connected to air inlet heat-exchanger rig 9, and heat heat-exchanger rig 12 and air inlet heat-exchanger rig 9 for disconnected
The state opened.Therefore, the flow distance of refrigerant in air inlet heat-exchanger rig 9 is shortened.Needing the air inlet to gas turbine
When air at mouthful is heated, the operation of inlet air heating subsystem.At this point, realizing heating heat-exchanger rig 12 and air inlet by switching
Heat-exchanger rig 9 is connected to, and cooling heat exchange device 6 and air inlet heat-exchanger rig 9 are for the state of disconnection.Equally shorten air inlet heat exchange
The flow distance of heating medium in device 9.
In the present embodiment, above-mentioned refrigerant and heating medium are water, also, cooling heat exchange device 6 is changed with heating
The heat exchange pipeline of thermal 12 is connected to by triple valve with air inlet heat-exchanger rig 9.As shown in Figure 1, chilled water water inlet line, hot water
The medium of water inlet line and air inlet heat-exchanger rig 9 enters nozzle and is connected to by entering the first triple valve 36；Chilled water water return pipeline,
The medium flow field outlet spout of hot water backwater's pipeline and air inlet heat-exchanger rig 9 is connected to by the second triple valve 37, passes through control the one or three
Port valve 36 and the second triple valve 37 realize air inlet heat-exchanger rig 9 and cooling heat exchange device 6 and heat the switching company of heat-exchanger rig 12
It is logical.
The quantity of heat cycles pump is multiple and is parallel on hot water inlet pipe road or hot water backwater's pipeline.As shown in Figure 1,
The quantity of heat cycles pump is two；Two heat cycles pumps are respectively the first heat cycles pump 13 and the second heat cycles pump
14, the first heat cycles pump 13 is in parallel with the second heat cycles pump 14, in order to the maintenance and replacement operation of heat cycles pump.
In order to avoid fluid drives in the wrong direction, the both ends of the first heat cycles pump 13 are respectively arranged with third check-valves 21 and the 4th and stop
Return valve 22；The both ends of second heat cycles pump 14 are respectively arranged with the 5th check-valves 23 and the 6th check-valves 24.
For safety in utilization is improved, convenient for adjusting heat cycles pump to the driving intensity of heating medium, inlet air heating
System further includes the heating pipeline butterfly valve 38 in parallel with heat cycles pump.By the aperture of control heating pipeline butterfly valve 38, adjust
The rate-of flow pumped by heat cycles.
Further, inlet air heating subsystem further includes pumping positioned at heat cycles close to the side of air inlet heat-exchanger rig 9
And it is connected to the heating bye-pass of hot water inlet pipe road and hot water backwater's pipeline, it heats and is provided with hot water flow regulating valve on bye-pass
33.In the present embodiment, heating the flow direction in bye-pass is that hot water inlet pipe road flows to hot water backwater's pipeline, by adjusting hot water stream
The aperture of adjustable valve 33 adjusts the flow velocity and flow of medium (hot water) in air inlet heat exchange runner, thus regulating gas turbine 1
Intake air temperature.
Further, the first discharging valve 53 is provided on hot water inlet pipe road or hot water backwater's pipeline, in air inlet
Heating subsystem when not used, empties the heating medium (water) of pipeline memory for a long time.
Similarly, the quantity of coolant circulation pump is multiple and is parallel to chilled water water inlet line or chilled water water return pipeline
On.As shown in Figure 1, the quantity of coolant circulation pump is two；Two coolant circulation pumps are respectively the first coolant circulation pump 15 and
Two coolant circulation pumps 16, the first coolant circulation pump 15 is in parallel with the second coolant circulation pump 16, in order to the maintenance of coolant circulation pump
And replacement operation.
In order to avoid fluid drives in the wrong direction, the both ends of the first coolant circulation pump 15 are respectively arranged with the 6th check-valves 25 and the 7th and stop
Return valve 26；The both ends of second coolant circulation pump 16 are respectively arranged with the 8th check-valves 27 and the 9th check-valves 28.
For safety in utilization is improved, convenient for adjusting coolant circulation pump to the driving intensity of heating medium, inlet gas cooling
System further includes the cooling line butterfly valve 39 in parallel with coolant circulation pump.By controlling the aperture of cooling line butterfly valve 39, warp is adjusted
The rate-of flow of supercooling circulating pump.
Further, inlet gas cooling subsystem further includes being located at coolant circulation pump close to the side of air inlet heat-exchanger rig 9
And it is connected to the cooling bye-pass of chilled water water inlet line and chilled water water return pipeline, chilled-water flow is provided on cooling bye-pass
Regulating valve 34.In the present embodiment, the flow direction in cooling bye-pass is that chilled water water inlet line flows to chilled water water return pipeline, is passed through
The aperture of chilled water flow adjustable valve 34 is adjusted, the flow velocity and flow of medium (chilled water) in air inlet heat exchange runner are adjusted, thus
The intake air temperature of regulating gas turbine 1.
Further, it is provided with the second discharging valve 54 on chilled water water inlet line or chilled water water return pipeline, is used for
Inlet gas cooling thermal sub-system when not used, empties the refrigerant (water) of pipeline memory for a long time.
It is utilized to improve energy recovery, heating heat-exchanger rig 12 is the outlet side for waste heat boiler 2 to be arranged in, and sharp
With the smoke heat replacing device of the flue gas heat exchange of gas turbine 1.
In the present embodiment, cooling heat exchange device 6 is bromine cooling machine.That is, lithium bromide absorption refrigerating set.It is set by above-mentioned
It sets, improves refrigeration effect.Also it can choose other kinds of equipment as cooling heat exchange device 6.
Wherein, the system flow of GTCC power plant is, the high-temperature flue gas of gas turbine 1 enters waste heat boiler 2, low-temperature flue gas from
The discharge of 2 tail portion of waste heat boiler；40 DEG C or so of liquid water enters waste heat boiler 2, with flue gas heat exchange, becomes the vapor of high temperature,
Into steam turbine 3；After high-temperature water vapor enters the acting of steam turbine 3, become the water vapour of low-temp low-pressure, after condenser 4,
Become 40 DEG C or so of liquid water and enters waste heat boiler 2.Condenser 4 and the heat exchange of cooling tower 5 connect.
It further include the steam heat source capsule with the refrigerant heat exchange in cooling heat exchange device 6 in order to ensure energy recovery
Road and the condensate pump 55 being series on steam source pipeline；Steam source pipeline has the steam extraction opening with steam turbine 3
The import of connection, steam source pipeline have the outlet that pipeline is connected between condenser 4 and condensate pump 55；Condensate pump 55
On the pipeline section in 4 exit of condenser.
Pressure and the suitable steam of temperature are extracted from steam turbine 3, the water become after steam cooling returns to waste heat boiler 2
In attachment water return outlet.Wherein, the outlet of condenser 4 is connected to steam source pipeline, in order to the liquid for flowing out condenser 4
Water flows after mixing with the fluid in steam source pipeline to waste heat boiler 2.
By above-mentioned setting, in order to which the steam to steam turbine 3 carries out the adjusting of temperature and pressure.
Further, further include desuperheat water pipe and be set between the import of steam source pipeline and cooling heat exchange device 6
Steam source pipeline section on steam converter valve 35, one end of desuperheat water pipe is connected to steam converter valve 35, desuperheat water pipe it is another
One end is connected to 55 water outlet of condensate pump.By above-mentioned setting, in order to the steam pressure and temperature in steam source pipeline
Degree is adjusted.Wherein, transfer tube 55 is located at the pipeline section being connected between the other end of desuperheat water pipe and the extraction opening of steam turbine 3
On.The desuperheat water inlet of steam converter valve 35 is connected to the water outlet of condensate pump 55.
Wherein, desuperheat water pipe refers to the pipeline exported between steam converter valve 35 from condensate pump 55.
The water vapour extracted from 3 extraction opening of steam turbine, it is sharp into refrigerating plant 6 after steam converter valve 35
Water vapour after becoming saturated water, returns to waste heat boiler 2.
It is adjusted to further facilitate, steam pressure detection device 51, vapor (steam) temperature inspection is provided on steam source pipeline
Survey device 52, second flowmeter 18 and steam flow control valve 32.Operator can be examined by steam pressure detection device 51
Pressure value, the temperature value of the detection of vapor (steam) temperature detection device 52 and the flow value of second flowmeter 18 of survey, to steam flow tune
Section valve 32 is adjusted, in order to which effectively steam pressure and temperature are adjusted.Steam pressure detection device 51 is for detecting
The steam pressure of cooling heat exchange device 6.
The tenth check-valves 31 is also set up on steam source pipeline, in order to guarantee steam source fluids within pipes by vapor wheel
Flowing of the machine 3 to waste heat boiler 2.
As shown in Figure 1, being in series with living water heat exchanger on steam source pipeline to further increase the heat source rate of recovery
56, the fluid in steam source pipeline passes through the fluid heat exchange in living water heat exchanger 56 and living water pipeline.
Preferably, living water heat exchanger 56 is set to the steam heat source capsule between cooling heat exchange device 6 and waste heat boiler 2
Duan Shang.
Gas turbine inlet air temperature control system provided in an embodiment of the present invention further includes for absorbing cooling heat exchange device
The recirculated cooling water pipeline of refrigerant heat in 6；The water inlet of recirculated cooling water pipeline and the outlet of cooling tower 5, are followed
The water outlet of ring cooling water pipeline and the inlet communication of cooling tower 5.Wherein, the cooling water in cooling tower 5 enters recirculated cooling water
Heat exchange is carried out with refrigerant in cooling heat exchange device 6 after pipeline, in order to absorb refrigerant heat in cooling heat exchange device 6
Amount, also, the cooling water for absorbing heat flows back in cooling tower 5.Pass through above-mentioned setting, it is ensured that the refrigeration of cooling heat exchange device 6
Effect.
In order to avoid fluid drives in the wrong direction, the water inlet of recirculated cooling water pipeline is provided with the 11st check-valves 30, recycles cold
But the water outlet of waterpipe is provided with the 12nd check-valves 29.
In the present embodiment, air inlet heat-exchanger rig 9 is located at the air inlet rough filtering 8 of gas turbine and the air inlet refined filtration 11 of gas turbine
Between.By above-mentioned setting, removal moisture drying processing effectively is carried out to air inlet rough filtering 8 and air inlet refined filtration 11.
In order to further increase effect on moisture extraction, the dehumidifier 10 of gas turbine is located at air inlet heat-exchanger rig 9 and air inlet refined filtration
Between 11.
Further, the inlet end of gas turbine 1 is provided with rain cover 7.Preferably, air inlet heat-exchanger rig 9 is Air-Water
Pipe thermal.That is, above-mentioned refrigerant and heating medium are water.By hot water and cooling water respectively to the heat exchange of air, shape
Pairs of air heating and cooling operation.
Gas turbine inlet air temperature control system provided by the invention is described in detail above.It is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand originally
The method and its core concept of invention.It should be pointed out that for those skilled in the art, not departing from this hair
, can be with several improvements and modifications are made to the present invention under the premise of bright principle, these improvement and modification also fall into power of the present invention
In the protection scope that benefit requires.
Claims (13)
1. a kind of gas turbine inlet air temperature control system, which is characterized in that including inlet gas cooling subsystem and inlet air heating
System；
The inlet gas cooling subsystem includes cooling heat exchange device (6), for the air inlet in the air inlet of gas turbine (1) to be arranged
Heat-exchanger rig (9), the outlet of the connection cooling heat exchange device (6) and the import of the air inlet heat-exchanger rig (9) chilled water
Water inlet line, the import of the connection cooling heat exchange device (6) and the outlet of the air inlet heat-exchanger rig (9) chilled water return water
Pipeline and the coolant circulation pump being set on the chilled water water inlet line or the chilled water water return pipeline；
The inlet air heating subsystem is changed including heating heat-exchanger rig (12), the air inlet heat-exchanger rig (9), the connection heating
The hot water inlet pipe road of the outlet of thermal (12) and the import of the air inlet heat-exchanger rig (9), the connection heating heat exchange dress
It sets hot water backwater's pipeline of the import of (12) and the outlet of the air inlet heat-exchanger rig (9) and is set to the hot water inlet pipe road
Or the heat cycles pump on hot water backwater's pipeline；
Wherein, in the inlet gas cooling subsystem operational process, the heat transferring medium in the air inlet heat-exchanger rig (9) is freezing
Water；In the inlet air heating subsystem, the heat transferring medium in the air inlet heat-exchanger rig (9) is hot water.
2. gas turbine inlet air temperature control system according to claim 1, which is characterized in that further include for detecting
State the measuring system that numerical value is measured in inlet gas cooling subsystem and the inlet air heating subsystem；
The measuring system includes temperature measuring device, humidity measuring instrument, device for pressure measurement and flow measurement device.
3. gas turbine inlet air temperature control system according to claim 1, which is characterized in that the cooling heat exchange device
(6), the heating heat-exchanger rig (12) is switchably connected to the air inlet heat-exchanger rig (9).
4. gas turbine inlet air temperature control system according to claim 1, which is characterized in that the heat cycles pump
Quantity is multiple and is parallel on the hot water inlet pipe road or hot water backwater's pipeline；
And/or the quantity of the coolant circulation pump is multiple and is parallel to the chilled water water inlet line or chilled water return pipe
On road.
5. gas turbine inlet air temperature control system according to claim 1, which is characterized in that the inlet air heating subsystem
System further includes side and the connection hot water inlet pipe road pumped positioned at the heat cycles close to the air inlet heat-exchanger rig (9)
And the heating bye-pass of hot water backwater's pipeline, hot water flow regulating valve (33) are provided on the heating bye-pass；
And/or the inlet gas cooling subsystem further includes being located at the coolant circulation pump close to the air inlet heat-exchanger rig (9)
Side and it is connected on the chilled water water inlet line or the chilled water water return pipeline chilled water water inlet line and described cold
Freeze the cooling bye-pass of water water return pipeline, is provided with chilled water flow adjustable valve (34) on the cooling bye-pass.
6. gas turbine inlet air temperature control system according to claim 1, which is characterized in that the heating heat-exchanger rig
It (12) is to be filled for the tail portion in waste heat boiler (2) to be arranged, and using the flue gas heat exchange of the flue gas heat exchange of the gas turbine (1)
It sets.
7. gas turbine inlet air temperature control system according to claim 1, which is characterized in that the cooling heat exchange device
It (6) is bromine cooling machine.
8. gas turbine inlet air temperature control system according to claim 1, which is characterized in that further include and the refrigeration
The steam source pipeline of refrigerant heat exchange in heat-exchanger rig (6) and the condensed water being series on the steam source pipeline
It pumps (55)；
The steam source pipeline has the import being connected to the steam extraction opening of steam turbine (3), the steam source pipeline
With the outlet that pipeline is connected between condenser (4) and the condensate pump (55)；
The condensate pump (55) is located on the pipeline section in the condenser (4) exit.
9. gas turbine inlet air temperature control system according to claim 8, which is characterized in that further include desuperheat water pipe and
The desuperheat being set on the steam source pipeline section between the import of the steam source pipeline and the cooling heat exchange device (6) subtracts
One end of pressure valve (35), the desuperheat water pipe is connected to the steam converter valve (35), the other end of the desuperheat water pipe and institute
State the connection of condensate pump (55) water outlet.
10. gas turbine inlet air temperature control system according to claim 8, which is characterized in that the steam heat source capsule
Steam flow control valve (32) are provided on road.
11. gas turbine inlet air temperature control system according to claim 8, which is characterized in that the steam heat source capsule
It is in series on road living water heat exchanger (56), the fluid in the steam source pipeline passes through the living water heat exchanger
(56) with living water pipeline in fluid heat exchange.
12. gas turbine inlet air temperature control system according to claim 1, which is characterized in that the air inlet heat exchange dress
(9) are set to be located between the air inlet rough filtering (8) of the gas turbine and the air inlet refined filtration (11) of the gas turbine；The combustion gas wheel
The dehumidifier (10) of machine is between the air inlet heat-exchanger rig (9) and the air inlet refined filtration (11).
13. -12 described in any item gas turbine inlet air temperature control systems according to claim 1, which is characterized in that it is described into
Gas heat-exchanger rig (9) is Air-Water pipe thermal.
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| CN111577410A (en) * | 2020-06-17 | 2020-08-25 | 杨漪 | Gas turbine inlet air temperature control device and gas turbine inlet air temperature control method |
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