CN205532886U - Can stabilize combined cycle waste heat utilization system of compressor height / low intake air temperature - Google Patents
Can stabilize combined cycle waste heat utilization system of compressor height / low intake air temperature Download PDFInfo
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- CN205532886U CN205532886U CN201620389428.4U CN201620389428U CN205532886U CN 205532886 U CN205532886 U CN 205532886U CN 201620389428 U CN201620389428 U CN 201620389428U CN 205532886 U CN205532886 U CN 205532886U
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Abstract
The utility model discloses a can stabilize combined cycle waste heat utilization system of compressor height / low intake air temperature, include: the flue gas hot water heat exchanger, air water heat exchanger, expansion tank, tubing pump, low temperature heat source hot water type lithium bromide refrigeration machine and valve, low temperature heat source hot water type lithium bromide refrigeration machine and air the heat source that water heat exchanger utilizes is the exhaust -heat boiler tail flue gas waste heat, at cold seasons, this system can heat the compressor admits air, prevents that the water droplet freezes in the air, improves the operational safety and the heat economy nature of unit, at high temperature season, this system can admit air by the cooling press mechanism of qi, improves the peak regulation ability and the heat economy nature of unit, the system uses exhaust -heat boiler to discharge fume the waste heat as the heat source, realizes the compressor intake air temperature and stabilizes the function, can carry out the compressor through opening and close of valve and admit air and add nice and warm cooling function's switching, has the dual benefit that improves unit safety nature and economic nature.
Description
Technical field:
This utility model relates to a kind of combined cycle UTILIZATION OF VESIDUAL HEAT IN system stabilizing the high/low intake air temperature of compressor
System, this system, with waste heat boiler smoke discharging residual heat as thermal source, is integrated with inlet gas cooling and two merits of inlet air heating
Can, it is possible to be effectively lowered into the air themperature of gas turbine at high temperature season, be effectively improved at low temperature season
The intake air temperature of gas turbine, has raising unit safety and the double benefit of economy；This utility model
Belong to technical field of energy utilization.
Background technology:
Gas turbine is the dynamic power machine of high speed rotating, the safety in operation of Combined-cycle Gas Turbine Unit and
Thermal performance (exert oneself, the thermal efficiency) is all closely related with atmospheric temperature.
It is a blood pressure lowering speedup process that air is entered compressor by inlet channel, has the temperature of 5 DEG C according to the study
Fall, when the temperature of the surroundings is low, the water droplet in air easily freezes, and makes operating compressor easily occur
It is dangerous " to gulp down ice ", causes the serious accident that compressor blade is injured or interrupted.Therefore, at compressor air inlet machine
Inlet air heating system it is equipped with, it is possible to water droplet knot in air in the case of preventing low temperature season temperature relatively low in passage
Ice, improves the safety in operation of Combined Cycle Unit.
Exerting oneself of Combined Cycle Unit reduces with the increase of atmospheric temperature, when causing high temperature season peak of power consumption
The peak modulation capacity of section unit is not enough, it was found that ambient temperature raises 1 DEG C of maximum, to may result in gas turbine specified
Generating capacity declines 1%.It is therefore desirable to take to reduce the measure of gas turbine inlet air temperature at high temperature season,
To improve exerting oneself of unit, improve the peaking performance of unit.
Atmospheric temperature is too low or too high all unfavorable to the Combined Cycle Unit thermal efficiency, therefore uses adequate measure to exist
Low temperature season improves intake air temperature, reduces intake air temperature at high temperature season, is conducive to improving Combined Cycle Unit
The thermal efficiency.
Gas turbine and the inlet air heating of Combined Cycle Unit and cooling system thereof mainly utilize steam turbine to supply at present
Heat is drawn gas or low pressure main steam, and if date of publication is on July 2nd, 2014, publication No. is CN203685935U's
Chinese patent, discloses a kind of integrated system for gas turbine inlet air heating with cooling, and this device is at height
Warm season utilizes steam turbine heat supply to draw gas or low pressure main steam produces coolant as the thermal source of lithium bromide refrigerator
Water, as charge-cooling low-temperature receiver；Utilize power plant's enclosed cooling water backwater as inlet air heating at low temperature season
Thermal source, it is achieved that inlet gas cooling and heating two big systems integration.But with extracted steam from turbine or waste heat pot
Unit output and the thermal efficiency can be had a negative impact by the high-grade vapour sources such as stove main steam as heating agent.
The smoke evacuation of Combined Cycle Unit can take away a large amount of heat energy, as F level Combined Cycle Unit waste heat boiler is discharged fume
Temperature can exceed that 90 DEG C, and smoke evacuation flow is more than 2000t/h, and fume afterheat not only has the highest Exploitative potential,
Its direct discharge also can cause the thermal pollution of environment；After combustion of natural gas, the acid dew point of flue gas is on a 60-70 DEG C of left side
The right side, and its dustiness is little, does not easily cause heat exchanger corrosion and blocks, therefore more than the flue gas of Combined Cycle Unit
Heat utilization has Necessity and feasibility.
Still do not have a kind of system reasonable in design at present, the high/low intake air temperature of compressor can be stabilized and carry high performance
Combined Cycle Unit bootstrap system.
Utility model content:
The purpose of this utility model is the deficiency overcoming prior art to exist, and provides a kind of system design to close
Reason, can stabilize the high/low intake air temperature of compressor and carry high performance Combined Cycle Unit bootstrap system；Should
System is by arranging flue gas-hot water heat exchanger at waste heat boiler back-end ductwork, and sets in compressor inlet-pipe
Putting air-water heat exchanger, with fume afterheat as thermal source, system hypothermia heats air inlet, high temperature season cooling season
Air inlet, and realize the flexible switching of inlet air heating and cooling mode of operation.
The purpose of this utility model is achieved through the following technical solutions:
The combined cycle bootstrap system of the high/low intake air temperature of compressor can be stabilized, including being positioned at waste heat boiler
Flue gas-hot water heat exchanger in back-end ductwork, it is positioned at the air-water heat exchanger of compressor inlet-pipe, expansion
Water tank and low-temperature heat source hot water lithium bromide refrigeration machine；Wherein,
Described air-water heat exchanger water side low temperature season flows into heat medium water and adds air in the passage of heat, heat medium water from
The produced hot water of exhaust-heat boiler flue gas-hot water heat exchanger；Air-water heat exchanger water side high temperature season flows into chilled water
Air in cooling duct, chilled water is from low-temperature heat source hot water lithium bromide refrigeration machine, low-temperature heat source hot-water type
The heat medium water of lithium bromide refrigerator is from the produced hot water of exhaust-heat boiler flue gas-hot water heat exchanger；
The water side outlet of described flue gas-hot water heat exchanger be respectively connecting to air-water heat exchanger water side entrance and
The heat source water entrance of low-temperature heat source hot water lithium bromide refrigeration machine；
Described expansion tank entrance is respectively connecting to water side outlet and the low-temperature heat source hot-water type of air-water heat exchanger
Lithium bromide refrigerator heat medium water exports；The outlet of described expansion tank is connected to flue gas-hot water heat exchanger water side entrance.
This utility model is further improved by, and described waste heat boiler is single pressure or multiple pressure, has reheating or nothing
Reheating pattern.
This utility model is further improved by, and also includes combustion gas turbine, chimney and compressor inlet-pipe,
Wherein, described compressor inlet is connected to compressor inlet-pipe；The aerofluxus of combustion gas turbine is connected to waste heat pot
Stove, described waste heat boiler aerofluxus is connected to chimney.
This utility model is further improved by, and also includes steam turbine and condenser, described waste heat boiler
Steam steam drain is connected to steam turbine；Described turbine discharge mouth is connected to condenser.
This utility model is further improved by, and the water side outlet of described flue gas-hot water heat exchanger passes through first
Valve and the 3rd valve are respectively connecting to water side entrance and the low-temperature heat source hot water lithium bromide of air-water heat exchanger
The heat source water entrance of refrigeration machine, described expansion tank entrance is connected to by the second valve and the 4th valve respectively
The water side outlet of air-water heat exchanger and low-temperature heat source hot water lithium bromide refrigeration machine heating agent water out；Described swollen
Swollen tank outlet is connected to flue gas-hot water heat exchanger water side entrance by the first pipeline pump and the tenth valve；
The cooling water inlet arranged on described low-temperature heat source hot water lithium bromide refrigeration machine and outlet are respectively by the
Nine valves and the 8th valve are connected to power plant cycle water lines；Low-temperature heat source hot water lithium bromide refrigeration machine is provided with
Entering chilled water and outlet, chilled water outlet is connected to by the 5th valve, second pipe pump and the 7th valve
Air-water heat exchanger water side entrance, and chilled water after described air-water heat exchanger by the 6th valve return
Entering chilled water to low-temperature heat source hot water lithium bromide refrigeration machine.
The beneficial effects of the utility model are:
Put into operation in the case of low temperature season is colder inlet air heating system, can not only prevent compressor inlet from being inhaled
The air themperature entered is less than its dew point temperature, and moisture contained in causing air freezes and threatens the safety of unit
Run, additionally it is possible to improve unit at full capacity time net efficiency, as by the intake air temperature of 9FA gas turbine from
-5.6 DEG C are heated to 15 DEG C, the net efficiency increase of Combined Cycle Unit about 0.5 percentage point；At high temperature season relatively
Put into operation in the case of heat charge air-cooling system, can increase Combined Cycle Unit and exert oneself and the thermal efficiency, improves unit
Peaking performance, as the intake air temperature of 9FA gas turbine is cooled to 30 DEG C from 40 DEG C, Combined Cycle Unit
Cleared-out power increase about 20MW, net efficiency improves about 0.2 percentage point；Owing to this utility model needs calming the anger
Machine inlet channel and waste heat boiler afterbody install heat exchanger additional, and system air side and fume side can be made to produce certain
Drag losses, for certain F level Combined Cycle Unit initial estimate, compressor air inlet machine drag losses is less than
1.5kPa, waste heat boiler smoke evacuation drag losses is less than 0.5kPa, and SR loss is the least, and by optimizing
It is designed to reduce heat exchanger resistance further, therefore can't change the trend that systematic entirety can optimize.
Accompanying drawing illustrates:
Fig. 1 is that one described in the utility model can be stabilized the high/low intake air temperature of compressor and propose high performance associating
The structural principle schematic diagram of Cycle Unit bootstrap system.
Label in figure has: 1 is compressor, and 2 is combustion gas turbine, and 3 is steam turbine, and 4 is waste heat boiler, and 5
For flue gas-hot water heat exchanger, 6 is chimney, and 7 is compressor inlet-pipe, and 8 is air-water heat exchanger, and 9 are
Condenser, 10 is expansion tank, and 11 is the first pipeline pump, and 12 is second pipe pump, and 13 is low-temperature heat source
Hot water lithium bromide refrigeration machine, 101 to 110 are respectively the first valve to the tenth valve.
Detailed description of the invention:
Below in conjunction with drawings and Examples, this utility model is described in detail:
As it is shown in figure 1, one described in the utility model can be stabilized the high/low intake air temperature of compressor and improve performance
Combined Cycle Unit bootstrap system, it specifically includes that the cigarette being positioned in waste heat boiler 4 back-end ductwork
Gas-hot water heat exchanger 5, be positioned at the air-water heat exchanger 8 of compressor inlet-pipe, expansion tank 10,
One pipeline pump 11, second pipe pump 12, low-temperature heat source hot water lithium bromide refrigeration machine 13 and first to
Ten valve 101-110；In described system, air-water heat exchanger 8 water side low temperature season inflow heat medium water adds the passage of heat
Interior air, heat medium water is from the produced hot water of exhaust-heat boiler flue gas-hot water heat exchanger 5；Air in described system-
Water-to-water heat exchanger 8 water side high temperature season flows into air in chilled water cooling duct, and chilled water is from low-temperature heat source warm
Water type lithium bromide refrigerator 13, the heat medium water of low-temperature heat source hot water lithium bromide refrigeration machine 13 is from waste heat boiler
The produced hot water of flue gas-hot water heat exchanger 5；
The water side outlet of described flue gas-hot water heat exchanger 5 is at least through the first valve 101 and the 3rd valve 103
It is respectively connecting to water side entrance and the heat of low-temperature heat source hot water lithium bromide refrigeration machine 13 of air-water heat exchanger 8
Source water inlet；
Described expansion tank 10 entrance is connected to sky at least through the second valve 102 and the 4th valve 104 respectively
The water side outlet of air-water heat exchanger 8 and the outlet of low-temperature heat source hot water lithium bromide refrigeration machine 13 heat medium water；Described
Expansion tank 10 exports and is connected to flue gas-hot water heat exchange at least through the first pipeline pump 11 and the tenth valve 110
Device 5 water side entrance.
Waste heat boiler 4 described in the utility model can be single pressure or multiple pressure, has reheating or without reheating pattern.
Compressor 1 entrance described in the utility model is connected to compressor inlet-pipe 7；The row of combustion gas turbine 2
Gas is connected to waste heat boiler 4, and the aerofluxus of described waste heat boiler 4 is connected to chimney 6.
Waste heat boiler 4 described in the utility model produces steam and is connected to steam turbine 3；Described steam turbine 3 row
Steam ports is connected to condenser 9.
The water at low temperature that inlet temperature is 60-70 DEG C is heated by flue gas-hot water heat exchanger 5 described in the utility model
It is the high-temperature-hot-water of 75-85 DEG C to temperature.
On low-temperature heat source hot water lithium bromide refrigeration machine 13 described in the utility model arrange cooling water inlet and
Outlet is connected to power plant cycle water lines by the 9th valve 109 and the 8th valve 108 respectively；Low-temperature heat source heat
Water type lithium bromide refrigerator 13 is provided with entering chilled water and outlet, chilled water outlet by the 5th valve 105,
Second pipe pump 12 and the 7th valve 107 are connected to air-water heat exchanger 8 water side entrance, and chilled water is through institute
It is back to low-temperature heat source hot water lithium bromide refrigeration machine at least through the 6th valve 106 after stating air-water heat exchanger 8
The entering chilled water of 13.
Embodiment:
Combined cycle inlet air heating system use residual heat of electric power plant boiler tail flue gas waste heat heat as air
Thermal source, is heated to high temperature, high-temperature water by the water at low temperature in flue gas-hot water heat exchanger 5 before flue gas enters chimney
It is followed by the water side entrance to air-water heat exchanger 8, with low in air-water heat exchanger 8 through the first valve 101
Form water at low temperature after warm air heat exchange, be back to expansion tank 10, expansion tank 10 by the second valve 102
Interior water at low temperature enters flue gas-hot water heat exchanger 5 after the first pipeline pump the 11 and the 10th valve 110.
In combined cycle charge air-cooling system, driving heat source used by low-temperature heat source hot water lithium bromide refrigeration machine 13 is
The high-temperature water that waste heat boiler tail flue gas-hot water heat exchanger 5 produces, high-temperature water enters after the 3rd valve 103
Low-temperature heat source hot water lithium bromide refrigeration machine 13, the water at low temperature that high-temperature water is formed after cooling is through the 4th valve
Being back to expansion tank 10 after 104, the water at low temperature in expansion tank 10 is through the first pipeline pump the 11 and the 10th valve
Flue gas-hot water heat exchanger 5 is entered after door 110.The cooling hydromining of low-temperature heat source hot water lithium bromide refrigeration machine 13 is used
The recirculated cooling water of power plant, draws a road cooling water after the 9th valve 109 with low from water circulating pump outlet
Temperature-heat-source hot water lithium bromide refrigeration machine 13 is connected, and cooling water backwater is back to main following through the 8th valve 108
Ring water water return pipeline.The chilled water that low-temperature heat source hot water lithium bromide refrigeration machine 13 produces is through the 5th valve
105 and by second pipe pump 12, enter after the 7th valve 107 in air-water heat exchanger 8, and calm the anger
Hot-air in machine inlet channel 7 is back to low-temperature heat source hot-water type bromine through the 6th valve 106 after carrying out heat exchange
Change lithium refrigeration machine 13.
Work process of the present utility model is as follows:
Combined cycle inlet air heating uses valve group to control with the operational mode switching of cooling.Inlet air heating system
System is when putting into operation, and first valve the 101, second valve the 102, the tenth valve 110 is opened, the 3rd valve 103 to the
Nine valves 109 are turned off；When charge air-cooling system puts into operation, the first valve 101 and the second valve 102 are closed,
3rd valve 103 is opened to the tenth valve 110.
Combined cycle inlet air heating process, utilizes the fume afterheat of waste heat boiler afterbody to add thermal medium, by flue gas-
Water at low temperature in hot water heat exchanger 5 is heated to high temperature, and high-temperature water enters Air-Water heat exchange through the first valve 101
In device 8, form water at low temperature, by the second valve after the Cryogenic air heat exchange in compressor inlet-pipe 7
102 are back to expansion tank 10, and the water at low temperature in expansion tank 10 is through the first pipeline pump the 11 and the 10th valve
Enter flue gas-hot water heat exchanger 5 after 110 to reheat.
Combined cycle inlet gas cooling process, driving heat source used by low-temperature heat source hot water lithium bromide refrigeration machine 13 is
The high-temperature water that waste heat boiler tail flue gas-hot water heat exchanger 5 produces, high-temperature water is laggard through the 3rd valve 103
Entering low-temperature heat source hot water lithium bromide refrigeration machine 13, high-temperature water forms water at low temperature after cooling through the 4th valve
Being back to expansion tank 10 after 104, the water at low temperature in expansion tank 10 is through the first pipeline pump 11 and the 10th
Return flue gas-hot water heat exchanger 5 after valve 110 to reheat.Low-temperature heat source hot water lithium bromide refrigeration machine 13
The chilled water produced is through the 5th valve 105 and by second pipe pump 12, laggard through the 7th valve 107
Enter in air-water heat exchanger 8, carry out after heat exchange through the 6th valve with the hot-air in compressor inlet-pipe 7
Door 106 is back to low-temperature heat source hot water lithium bromide refrigeration machine 13.Low-temperature heat source hot water lithium bromide refrigeration machine
The cooling hydromining recirculated cooling water of power plant of 13, draws a road cooling water through the 9th from water circulating pump outlet
Being connected with low-temperature heat source hot water lithium bromide refrigeration machine 13 after valve 109, cooling water backwater is through the 8th valve
108 are back to major cycle water water return pipeline.
Claims (5)
1. can stabilize the combined cycle bootstrap system of the high/low intake air temperature of compressor, it is characterized in that, air-water heat exchanger (8), expansion tank (10) and low-temperature heat source hot water lithium bromide refrigeration machine (13) including the flue gas-hot water heat exchanger (5) being positioned in waste heat boiler (4) back-end ductwork, being positioned at compressor (1) inlet channel；Wherein,
Described air-water heat exchanger (8) water side low temperature season flows into heat medium water and adds air in the passage of heat, and heat medium water is from exhaust-heat boiler flue gas-hot water heat exchanger (5) produced hot water；Air-water heat exchanger (8) water side high temperature season flows into air in chilled water cooling duct, chilled water is from low-temperature heat source hot water lithium bromide refrigeration machine (13), and the heat medium water of low-temperature heat source hot water lithium bromide refrigeration machine (13) is from exhaust-heat boiler flue gas-hot water heat exchanger (5) produced hot water；
The water side outlet of described flue gas-hot water heat exchanger (5) is respectively connecting to water side entrance and the heat source water entrance of low-temperature heat source hot water lithium bromide refrigeration machine (13) of air-water heat exchanger (8)；
Described expansion tank (10) entrance is respectively connecting to water side outlet and the outlet of low-temperature heat source hot water lithium bromide refrigeration machine (13) heat medium water of air-water heat exchanger (8)；Described expansion tank (10) outlet is connected to flue gas-hot water heat exchanger (5) water side entrance.
The combined cycle bootstrap system stabilizing the high/low intake air temperature of compressor the most according to claim 1, it is characterised in that described waste heat boiler (4) is single pressure or multiple pressure, has reheating or without reheating pattern.
The combined cycle bootstrap system stabilizing the high/low intake air temperature of compressor the most according to claim 1, it is characterized in that, also include combustion gas turbine (2), chimney (6) and compressor inlet-pipe (7), wherein, described compressor (1) entrance is connected to compressor inlet-pipe (7)；The aerofluxus of combustion gas turbine (2) is connected to waste heat boiler (4), and described waste heat boiler (4) aerofluxus is connected to chimney (6).
The combined cycle bootstrap system stabilizing the high/low intake air temperature of compressor the most according to claim 1 and 2, it is characterized in that, also include that steam turbine (3) and condenser (9), described waste heat boiler (4) steam steam drain are connected to steam turbine (3)；Described steam turbine (3) steam drain is connected to condenser (9).
The combined cycle bootstrap system stabilizing the high/low intake air temperature of compressor the most according to claim 1, it is characterized in that, the water side outlet of described flue gas-hot water heat exchanger (5) is respectively connecting to water side entrance and the heat source water entrance of low-temperature heat source hot water lithium bromide refrigeration machine (13) of air-water heat exchanger (8) by the first valve (101) and the 3rd valve (103), described expansion tank (10) entrance is connected to water side outlet and the outlet of low-temperature heat source hot water lithium bromide refrigeration machine (13) heat medium water of air-water heat exchanger (8) respectively by the second valve (102) and the 4th valve (104)；Described expansion tank (10) outlet is connected to flue gas-hot water heat exchanger (5) water side entrance by the first pipeline pump (11) and the tenth valve (110)；
The upper cooling water inlet arranged of described low-temperature heat source hot water lithium bromide refrigeration machine (13) and outlet are connected to power plant cycle water lines by the 9th valve (109) and the 8th valve (108) respectively；Low-temperature heat source hot water lithium bromide refrigeration machine (13) is provided with entering chilled water and outlet, chilled water outlet is connected to air-water heat exchanger (8) water side entrance by the 5th valve (105), second pipe pump (12) and the 7th valve (107), and chilled water is back to the entering chilled water of low-temperature heat source hot water lithium bromide refrigeration machine (13) after described air-water heat exchanger (8) by the 6th valve (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620389428.4U CN205532886U (en) | 2016-04-29 | 2016-04-29 | Can stabilize combined cycle waste heat utilization system of compressor height / low intake air temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620389428.4U CN205532886U (en) | 2016-04-29 | 2016-04-29 | Can stabilize combined cycle waste heat utilization system of compressor height / low intake air temperature |
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| Publication Number | Publication Date |
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| CN205532886U true CN205532886U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620389428.4U Expired - Fee Related CN205532886U (en) | 2016-04-29 | 2016-04-29 | Can stabilize combined cycle waste heat utilization system of compressor height / low intake air temperature |
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Cited By (2)
| 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 |
| CN110206706A (en) * | 2019-04-16 | 2019-09-06 | 中国科学院工程热物理研究所 | The gas driven compressor assembly of inlet gas cooling |
-
2016
- 2016-04-29 CN CN201620389428.4U patent/CN205532886U/en not_active Expired - Fee Related
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 |
| CN110206706A (en) * | 2019-04-16 | 2019-09-06 | 中国科学院工程热物理研究所 | The gas driven compressor assembly of inlet gas cooling |
| CN110206706B (en) * | 2019-04-16 | 2021-06-08 | 中国科学院工程热物理研究所 | Gas drive compressor system with intake air cooling |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20180429 |
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| CF01 | Termination of patent right due to non-payment of annual fee |