CN203670124U - Water feed pump system of combined cycle power station - Google Patents

Water feed pump system of combined cycle power station Download PDF

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Publication number
CN203670124U
CN203670124U CN201320877818.2U CN201320877818U CN203670124U CN 203670124 U CN203670124 U CN 203670124U CN 201320877818 U CN201320877818 U CN 201320877818U CN 203670124 U CN203670124 U CN 203670124U
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CN
China
Prior art keywords
combustion engine
water pump
gas
internal
heat boiler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201320877818.2U
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Chinese (zh)
Inventor
谭灿燊
印佳敏
吴阿峰
杨劲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Energy Construction Group Guangdong Electric Power Design Institute Co Ltd
Original Assignee
China Energy Construction Group Guangdong Electric Power Design Institute Co Ltd
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Priority to CN201320877818.2U priority Critical patent/CN203670124U/en
Application granted granted Critical
Publication of CN203670124U publication Critical patent/CN203670124U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a water feed pump system of a combined cycle power station. The water feed pump system of the combined cycle power station comprises a gas turbine generator set, a steam turbine generator unit, a water feed pump and a waste heat boiler, wherein the gas turbine generator set and the steam turbine generator unit are communicated with the waste heat boiler; the water feed pump is communicated between the steam turbine generator unit and the waste heat boiler in series; the water feed pump is connected with a gas internal combustion engine; a drive shaft of the gas internal combustion engine is connected with a rotating shaft of the water feed pump, so that the gas internal combustion engine drives the water feed pump; the gas internal combustion engine is internally provided with an internal combustion engine vent system; the internal combustion engine vent system is communicated with the waste heat boiler. The water feed pump system of the combined cycle power station is high in water feed efficiency, saves electric energy, achieves resource recycling and is simple in equipment.

Description

The feed-water pump of circulating power station
Technical field
The utility model relates to internal combustion engine drive feed-water pump field, particularly relates to a kind of feed-water pump of circulating power station.
Background technique
Circulating power station is generally gas combustion-gas vapor combined cycle factory, and taking rock gas, coal gas or biogas etc. as fuel, capital equipment comprises gas turbine generator group, exhaust heat boiler, vapor wheel generator set.Exhaust heat boiler feed water pump adopts motoring conventionally.
Water supply pump motor is the power consumption rich and influential family of power plant, and the air horsepower of a 390MW level Combined Cycle Unit high pressure water pump is about 1500MW, and the station service power consumption rate that high pressure water pump consumes is about 0.3%.As year hours of operation according to 5000h technology, need every year power consumption 7,500,000 degree electricity.
Unipump is by internal combustion engine drive feed water pump, and internal-combustion engine is using rock gas, coal gas or biogas etc. as fuel.Internal-combustion engine is used for driving the case of power station feed water pump actually rare, but often uses engine drivenpump and natural gas compressor in field, petroleum gas station, provides pressure head for delivery of oil and natural gas.
Model utility content
Based on this, be necessary to provide a kind of efficiency that feeds water high, save electric energy, can realize the feed-water pump of the circulating power station of resource recycling.
A kind of feed-water pump of circulating power station, comprise fuel engine power generation unit, Turbo-generator Set, feed water pump and exhaust heat boiler, described fuel engine power generation unit, Turbo-generator Set are communicated in respectively described exhaust heat boiler, described feed water pump series connection is communicated between described Turbo-generator Set, exhaust heat boiler, and described feed water pump is connected with gas internal-combustion engine;
The live axle of described gas internal-combustion engine is connected in the rotating shaft of described feed water pump, makes described gas internal-combustion engine drive described feed water pump;
Described gas internal-combustion engine has internal combustion engine exhaust system, and described internal combustion engine exhaust system is communicated in described exhaust heat boiler.
In an embodiment, described gas internal-combustion engine also comprises induction system of internal combustion engine therein, and described induction system of internal combustion engine is communicated in plant area's steam line.
In an embodiment, described fuel engine power generation unit comprises gas compressor, firing chamber, gas turbine and fuel engine power generation machine therein, and described Turbo-generator Set comprises steam turbine, steam turbine generator and vapour condenser;
Described gas compressor, firing chamber, gas turbine and fuel engine power generation machine connect successively, described steam turbine generator, steam turbine, vapour condenser connect successively, between described steam turbine and described vapour condenser, connect described exhaust heat boiler and feed water pump, described gas turbine is connected in described exhaust heat boiler.
In an embodiment, described gas internal-combustion engine is connected by coupling, gearbox or hydraulic couplers with described feed water pump therein.
In an embodiment, the ingress of described gas internal-combustion engine is provided with reduction valve therein.
The feed-water pump of the circulating power station that the utility model relates to, high-temperature flue gas in gas internal-combustion engine is passed into exhaust heat boiler, the flue gas of gas internal-combustion engine is the high-temperature flue gas of approximately 400 degrees Celsius, high-temperature flue gas is by draining into exhaust heat boiler, the waste heat that further reclaims internal-combustion engine flue gas, exhaust heat boiler becomes the waste heat recovery utilizing equipment of the high-temperature flue gas of gas internal-combustion engine; The high-temperature flue gas of gas internal-combustion engine is through the heating surface heat exchange of exhaust heat boiler, temperature is reduced to approximately 100 degrees Celsius, the heat discharging passes to the working medium of steam turbine system, participate in the thermodynamic cycle of steam turbine system, finally change successfully, the generating efficiency of gas internal-combustion engine is about 43%, but total generating efficiency of the gas internal-combustion engine system of flue gas after UTILIZATION OF VESIDUAL HEAT IN can reach 54%, the utility model has been cancelled conventional water supply pump motor, and energy-saving effect is obvious, and has reduced station service.
The high-temperature exhaust air of gas turbine is as the heating source of steam turbine installation circulation, and exhaust heat boiler utilizes the high-temperature flue gas of gas turbine that the feedwater of steam turbine system is heated into steam; Exhaust heat boiler becomes the waste heat recovery utilizing equipment of gas turbine high temperature flue gas, realizes the recycling of heat, economizes on resources;
And described feed water pump, regulate the rotating speed of feed water pump by the rotating speed of regulating gas internal-combustion engine, adjust the throttling of valve station to regulate feedwater flow and pressure head to substitute by feedwater, improve the efficiency of feed water pump, the utility model utilizes primary energy directly to produce mechanical work output, reduce transformation of energy number of times, reduce the loss; Saved station service, being equivalent to has increased electricity volume under equal generated energy.
The feed-water pump of the circulating power station that the utility model relates to, described gas internal-combustion engine comprises induction system of internal combustion engine and internal combustion engine exhaust system, described internal combustion engine exhaust system is communicated in described exhaust heat boiler, described induction system of internal combustion engine is communicated in plant area's steam line, has realized the raising of feed water pump efficiency and the heat recovery of gas internal-combustion engine high-temperature flue gas by gas internal-combustion engine, induction system of internal combustion engine and internal combustion engine exhaust system simultaneously.
The feed-water pump of the circulating power station that the utility model relates to, described gas internal-combustion engine is connected by coupling, gearbox or hydraulic couplers with described feed water pump, adopt the speed governing of gas internal-combustion engine to regulate the rotating speed of feed water pump, adjust the throttling of valve station to regulate feedwater flow and pressure head to substitute by feedwater, make the adjusting efficiency between gas internal-combustion engine and described feed water pump higher.
The feed-water pump of the circulating power station that the utility model relates to, the ingress of described gas internal-combustion engine is provided with reduction valve, can by from the higher fuel gas of steam line internal pressure after suitable decompression, reach the requirement of gas internal-combustion engine suction pressure.
Brief description of the drawings
Fig. 1 is the utility model embodiment schematic diagram.
Description of reference numerals
10, gas compressor; 20, firing chamber; 30, gas turbine; 40, exhaust heat boiler; 50, steam turbine; 60, vapour condenser; 70, feed water pump 80, gas internal-combustion engine; 90, fuel engine power generation machine; 100, steam turbine generator; 110, coupling; 120, reduction valve.
Embodiment
Below with reference to embodiment and accompanying drawing, the utility model is described further.
A kind of feed-water pump of circulating power station, referring to Fig. 1, comprise fuel engine power generation unit, Turbo-generator Set and exhaust heat boiler 40, also comprise gas internal-combustion engine 80, described fuel engine power generation unit comprises gas compressor 10, firing chamber 20, gas turbine 30 and fuel engine power generation machine 90, described Turbo-generator Set comprises steam turbine 50, steam turbine generator 100, vapour condenser 60 and feed water pump 70, and described gas internal-combustion engine 80 comprises induction system of internal combustion engine and internal combustion engine exhaust system;
Described gas compressor 10, firing chamber 20, gas turbine 30 and fuel engine power generation machine 90 connect successively, described firing chamber 20 is communicated in plant area's steam line, with the high-pressure air mixing after-combustion through gas compressor 10, input high-temperature flue gas for gas turbine 30, described gas turbine 30 is also communicated in described exhaust heat boiler 40, enters exhaust heat boiler 40 for the high-temperature flue gas of gas turbine 30, described steam turbine 50, vapour condenser 60 and steam turbine generator 100 connect successively, at described steam turbine 50, between vapour condenser 60, be connected in series described exhaust heat boiler 40 and feed water pump 70, make described exhaust heat boiler 40, steam turbine 50, the connection that circulates successively of vapour condenser 60 and feed water pump 70, described gas internal-combustion engine 80 is connected in described feed water pump 70 by coupling 110, gas internal-combustion engine 80 drives described feed water pump 70, described gas internal-combustion engine 80 also can be connected by gearbox or hydraulic couplers with described feed water pump 70, described internal combustion engine exhaust system is communicated in described waste heat pot 40, described induction system of internal combustion engine is communicated in described firing chamber 20Qian plant area steam line, described gas internal-combustion engine 80 adopts indoor feed water pump 70 peripheries that are arranged in, and is convenient to drive feed water pump 70, and its smoke evacuation simultaneously is also convenient to enter in exhaust heat boiler 40.
The utility model in use, is drawn a road source of the gas and is supplied with gas turbine 30 on plant area's steam line, the gas pressure of supplying with gas turbine 30 is higher, generally in 3-4MPa left and right; Air enters gas compressor 10, high-pressure air after compression enters firing chamber 20, with fuel mix after-combustion, the high-temperature flue gas producing drives the turbine of gas turbine 30, drive fuel engine power generation machine 90 to generate electricity, the flue gas of the higher temperature of discharging from the turbine of gas turbine 30 drains into exhaust heat boiler 40, water generates steam in heating exhaust heat boiler 40 drives steam turbine 50, drive 100 works done of steam turbine generator, the steam discharge of steam turbine 50 enters vapour condenser 60, water of condensation in vapour condenser 60 is pressurizeed by feed water pump 70, is reintroduced back to exhaust heat boiler 40 and carries out steam/water circulating.
The fuel of gas internal-combustion engine 80 is the fuel of combined-cycle power plant, draw another road source of the gas from firing chamber 20Qian plant area steam line, carrying out multi-step pressure reduction through reduction valve 120 reaches after gas internal-combustion engine 80 suction pressure requirements, enter gas internal-combustion engine 80 burning outbursts and produce power, the suction pressure of gas internal-combustion engine 80 requires to be generally below 0.2bar, gas internal-combustion engine 80 drives feed water pump 70 through coupling 110, the exhaust of gas internal-combustion engine 80 interior generations drains into exhaust heat boiler 40, and the smoke discharging residual heat that exhaust heat boiler 40 makes full use of gas internal-combustion engine 80 produces steam.
The feed-water pump of the circulating power station that the utility model relates to, high-temperature flue gas in gas internal-combustion engine is passed into exhaust heat boiler, the flue gas of gas internal-combustion engine is the high-temperature flue gas of approximately 400 degrees Celsius, high-temperature flue gas is by draining into exhaust heat boiler, further reclaim the waste heat of internal-combustion engine flue gas, the high-temperature flue gas of gas internal-combustion engine is through the heating surface heat exchange of exhaust heat boiler, temperature is reduced to approximately 100 degrees Celsius, the heat discharging passes to the working medium of steam turbine system, participate in the thermodynamic cycle of steam turbine system, finally change successfully, the generating efficiency of gas internal-combustion engine is about 43%, but total generating efficiency of the gas internal-combustion engine system of flue gas after UTILIZATION OF VESIDUAL HEAT IN can reach 54%, the utility model has been cancelled conventional water supply pump motor, energy-saving effect is obvious, and reduce station service, by the heating source using the high-temperature exhaust air of gas turbine as steam turbine working medium circulation, exhaust heat boiler utilizes the high-temperature flue gas of gas turbine that the feedwater of steam turbine system is heated into steam, exhaust heat boiler becomes the waste heat recovery utilizing equipment of the high-temperature flue gas of gas turbine and gas internal-combustion engine, realizes the recycling of heat, economizes on resources, described feed water pump, regulate the rotating speed of feed water pump by the rotating speed of regulating gas internal-combustion engine, adjust the throttling of valve station to regulate feedwater flow and pressure head to substitute by feedwater, improve the efficiency of feed water pump, the utility model utilizes primary energy directly to produce mechanical work output, reduce transformation of energy number of times, reduce the loss, saved station service, being equivalent to has increased electricity volume under equal generated energy.
The above embodiment has only expressed several mode of execution of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims (5)

1. the feed-water pump of a circulating power station, comprise fuel engine power generation unit, Turbo-generator Set, feed water pump and exhaust heat boiler, described fuel engine power generation unit, Turbo-generator Set are communicated in respectively described exhaust heat boiler, described feed water pump series connection is communicated between described Turbo-generator Set, exhaust heat boiler, it is characterized in that, also comprise gas internal-combustion engine;
The live axle of described gas internal-combustion engine is connected in the rotating shaft of described feed water pump, makes described gas internal-combustion engine drive described feed water pump;
Described gas internal-combustion engine has internal combustion engine exhaust system, and described internal combustion engine exhaust system is communicated in described exhaust heat boiler.
2. the feed-water pump of circulating power station according to claim 1, is characterized in that, described gas internal-combustion engine also comprises induction system of internal combustion engine, and described induction system of internal combustion engine is communicated in plant area's steam line.
3. the feed-water pump of circulating power station according to claim 1 and 2, it is characterized in that, described fuel engine power generation unit comprises gas compressor, firing chamber, gas turbine and fuel engine power generation machine, and described Turbo-generator Set comprises steam turbine, steam turbine generator and vapour condenser;
Described gas compressor, firing chamber, gas turbine and fuel engine power generation machine connect successively, described steam turbine generator, steam turbine, vapour condenser connect successively, between described steam turbine and described vapour condenser, be connected in series described exhaust heat boiler and feed water pump, described gas turbine is connected in described exhaust heat boiler.
4. the feed-water pump of circulating power station according to claim 1 and 2, is characterized in that, described gas internal-combustion engine is connected by coupling, gearbox or hydraulic couplers with described feed water pump.
5. the feed-water pump of circulating power station according to claim 1 and 2, is characterized in that, the ingress of described gas internal-combustion engine is provided with reduction valve.
CN201320877818.2U 2013-12-26 2013-12-26 Water feed pump system of combined cycle power station Withdrawn - After Issue CN203670124U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320877818.2U CN203670124U (en) 2013-12-26 2013-12-26 Water feed pump system of combined cycle power station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320877818.2U CN203670124U (en) 2013-12-26 2013-12-26 Water feed pump system of combined cycle power station

Publications (1)

Publication Number Publication Date
CN203670124U true CN203670124U (en) 2014-06-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103711670A (en) * 2013-12-26 2014-04-09 中国能源建设集团广东省电力设计研究院 Feed pump system of combined cycle power station
CN104912765A (en) * 2015-06-10 2015-09-16 中国华电工程(集团)有限公司 Steam-driven pump system of distributed energy station

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103711670A (en) * 2013-12-26 2014-04-09 中国能源建设集团广东省电力设计研究院 Feed pump system of combined cycle power station
CN103711670B (en) * 2013-12-26 2016-08-17 中国能源建设集团广东省电力设计研究院有限公司 The feed-water pump of circulating power station
CN104912765A (en) * 2015-06-10 2015-09-16 中国华电工程(集团)有限公司 Steam-driven pump system of distributed energy station

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC

Free format text: FORMER NAME: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE

CP01 Change in the name or title of a patent holder

Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No.

Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute

Address before: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No.

Patentee before: Guangdong Electric Power Design Institute of CEEC

AV01 Patent right actively abandoned

Granted publication date: 20140625

Effective date of abandoning: 20160817

C25 Abandonment of patent right or utility model to avoid double patenting