CN209145714U - A kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade - Google Patents
A kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade Download PDFInfo
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- CN209145714U CN209145714U CN201821231167.9U CN201821231167U CN209145714U CN 209145714 U CN209145714 U CN 209145714U CN 201821231167 U CN201821231167 U CN 201821231167U CN 209145714 U CN209145714 U CN 209145714U
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Abstract
A kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade, the partial heat of compressed air is exchanged to fuel by the heat exchanger being arranged between two stage compressor, this partial heat is taken back into combustion chamber by fuel again, low-pressure compressed air is cooled in heat exchanger, reduce the compression wasted work of high-pressure compressor, improve the gross efficiency and overall compression ratio of compressor, gas turbine proficiency may finally be promoted, the utility model can also further expand the Combined cycle gas-steam turbine device become using the pre-heating fuel that exchanges heat between grade, reach promotion gas turbine proficiency, energy saving purpose.
Description
Technical field
The utility model relates to technical field of gas turbine, in particular to a kind of combustion gas using the pre-heating fuel that exchanges heat between grade
Turbine installation.
Background technique
Gas turbine is that the gas continuously to flow drives turbine blade high speed rotation as working medium, and the chemical energy of fuel is turned
Become a kind of equipment of turbine blade mechanical energy.Gas turbine usually by compressor, combustion chamber, turbine and connection compressor and
The axis of turbine forms, and the gas turbine for power generation is further equipped with generator, is also connected with the axis for connecting compressor and turbine.Combustion
The workflow of gas-turbine is that from ambient inlet air, step by step compression is allowed to be pressurized compressor, while air themperature also accordingly mentions
Height, compressed air enter combustion chamber, and the gas for generating high temperature and pressure, the high temperature and pressure gas are mixed and burned with the fuel of penetrating
Body enters back into turbine expansion acting, drives turbine blade high speed rotation, and the axis through connection compressor, turbine and generator exports machine
Mechanical work is changed into electric energy again by tool function, generator.Into combustion gas (gas after the burning) initial temperature and compressor of turbine
Compression ratio (the ratio between outlet pressure and inlet pressure), be influence gas turbine proficiency two principal elements.Improve combustion gas
Turbine efficiency can be carried out using raising combustion gas initial temperature, or the mode of increase compressor compression ratio.In actual moving process
In, compressor compression ratio is improved, blower outlet compressed air temperature can be promoted, greatly increase compression wasted work, therefore, compressor
Compression ratio has an optimum value, corresponds to compressor efficiency maximum point.It can be by increasing doing for cooler between compressor stage
Method reduces blower outlet compressed air temperature, reduces power input to compressor, promotes the corresponding compression ratio of compressor optimum efficiency.It is right
In the heavy duty gas turbine of power plant's configuration, electric power plant circulating water can be used as cold source, however the heat that this part recirculated water is taken away
It is lower to measure grade, usually cannot be used directly for generating electricity.On the other hand, the fuel such as the natural gas come from supervisor's net usually require to pass through
Dew point heater and performance heater carry out heating and are just admitted to gas turbine combustion, and the heat source that this part needs is usually from volume
Outer boiler or other heat sources.
Summary of the invention
The heat grade taken out of for above-mentioned compressor interstage cooler by recirculated water is low, and fuel heating needs to consume volume again
Outer heat, the utility model provide a kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade, propose low in gas turbine
Increase heat exchanger between pressure compressor and high-pressure compressor to cool down compressed air and pre-heating fuel, reaches and promote gas turbine effect
Rate, energy saving purpose.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade, sets gradually low including axis 6 and on axis 6
Compressor 1, high-pressure compressor 2, turbine 4 and generator 5 are pressed, is provided between the low-pressure compressor 1 and high-pressure compressor 2
Heat exchanger 7, is arranged combuster 3 between high-pressure compressor 2 and turbine 4,7 inner part of heat exchanger is independent cartridge
Road and air pipe line, 7 fuel conduit entrance of heat exchanger connect fuel 21, the outlet of 7 fuel conduit of heat exchanger and 3 entrance phase of combustion chamber
Even, 7 air pipe line entrance of heat exchanger connects low-pressure compressor 1 and exports, 7 air pipe line of heat exchanger outlet connection high-pressure compressor 2
Entrance, the outlet of combustion chamber 3 are connected on 4 entrance of turbine, and 4 output end of turbine is exhaust outlet or and waste heat boiler
31 gas side feeder connections are connected.
31 inner part of waste heat boiler is independent the gentle wing passage of water wing passage, water wing passage outlet connection vapour
32 entrance of turbine, steam turbine 32 connect condensing by 34 driven generator 33 of shaft coupling, the 32 steam exhaust output end of steam turbine
Device 35, condenser 35 are connected to 31 water wing passage entrance of waste heat boiler by feed pump 36, and 31 gas side of waste heat boiler is logical
Road outlet is provided with exhaust apparatus.
The heat exchanger 7 exchanges the partial heat of low-pressure compressed air 12 to fuel 21, then the fuel 22 by preheating
This partial heat is taken back into combustion chamber 3, meanwhile, the temperature of 2 import compressed air of high-pressure compressor is reduced, helps to reduce high
Press 2 wasted work of compressor.
A kind of operation method of the gas-turbine installation using the pre-heating fuel that exchanges heat between grade, filtered air 11 enters low
Pressure compressor 1 is compressed, while temperature increases, and becomes low-pressure compressed air 12, and into heat exchanger 7, fuel 21 enters heat exchanger 7
The fuel 22 of preheating is heated as by low-pressure compressed air 12, low-pressure compressed air 12 is cooled, enters high pressure pressure from heat exchanger 7
Mechanism of qi 2 is further compressed, and in order to obtain optimal total compressor efficiency, the compression ratio of low-pressure compressor 1 needs to control in 11-
Between 20, preferably 16, the compression ratio of high-pressure compressor 2 then controls between 8-12, and preferably 9, the fuel 22 of preheating is from heat exchanger 7
It is directly entered combustion chamber 3 out, high pressure air 14 also enters combustion chamber 3 from high-pressure compressor 2 out, and fuel and air exist
The burning of 3 internal mix of combustion chamber generates high temperature and pressure exhaust 15, and 4 blade of turbine rotation warp beam 6 is pushed to export mechanical work, generator
The mechanical work that axis 6 exports is converted electric energy by 5.Turbine exhaust 16 is directly discharged into atmosphere.
The exhaust of turbine 4 16 does not enter atmosphere, but enters waste heat boiler 31 and heat water supply 41 as superheated steam
42, superheated steam 42 enters back into the rotation of 32 driving blade of steam turbine, converts mechanical energy for the thermal energy of superheated steam 42, passes through connection
Axis device 34 drives the rotation of 33 rotor of generator, converts power output for mechanical energy.The steam exhaust 43 that steam turbine 32 is discharged is in condensing
35 internal condensate of device becomes condensed water 44, then completes steam circulation by 36 pressurized delivered of feed pump to waste heat boiler 31.Waste heat pot
Fire grate gas 17 is directly entered atmosphere.
The utility model has the beneficial effects that
The utility model takes full advantage of the heat of low-pressure compressor compressed air generation, by pre-heating fuel by this part
Heat takes back combustion chamber, while reducing high-pressure compressor compression wasted work, improves two stage compressor gross efficiency and overall compression ratio,
It finally can be improved gas turbine proficiency.
The device can also further expand the Combined cycle gas-steam turbine device become using the pre-heating fuel that exchanges heat between grade.
Fuel temperature, which is promoted to about 200 DEG C from 30 DEG C, can increase gas turbine proficiency about 0.4%, for combustion and steam
Combined cycle unit can equally promote Combined cycle gas-steam turbine whole efficiency about 0.4%.
Detailed description of the invention
Fig. 1 is the gas-turbine installation using the pre-heating fuel that exchanges heat between grade.
Fig. 2 is the Combined cycle gas-steam turbine device using the pre-heating fuel that exchanges heat between grade.
Fig. 3 is the relationship between gas turbine proficiency and fuel preheating temperature.
1- low-pressure compressor；2- high-pressure compressor；The combustion chamber 3-；4- turbine；5- generator；6- axis；7- heat exchanger；11-
Air；12- low-pressure compressed air；13- cooling low-pressure compressed air；14- high pressure air；15- exhaust combustion chamber；16-
Turbine exhaust；The exhaust of 17- waste heat boiler；21- fuel；The fuel of 22- preheating；31- waste heat boiler；32- steam turbine；33- power generation
Machine；34- shaft coupling；35- condenser；36- feed pump；41- water supply；42- superheated steam；43- steam exhaust；44- condensed water.
Specific embodiment
The utility model is described in further detail below with reference to embodiment.
Embodiment 1 is using the gas-turbine installation for the pre-heating fuel that exchanges heat between grade, as shown in Figure 1, including low-pressure compressor
1, high-pressure compressor 2, combustion chamber 3, turbine 4, generator 5, connection low-pressure compressor 1, high-pressure compressor 2, turbine 4 and generator
5 axis 6, heat exchanger 7.
Pass through the part heat for the compressed air that the heat exchanger 7 being arranged between two stage compressor comes out low-pressure compressor 1
Amount exchange brings this partial heat into combustion chamber to fuel, then by fuel.It is empty due to reducing the compression that low-pressure compressor 1 comes out
Temperature degree improves two stage compressor gross efficiency, while two stage compressor to reduce the compression wasted work of high-pressure compressor 2
Overall compression ratio is also improved, and may finally promote gas turbine proficiency.
The method of operation of embodiment 1 is that filtered air 11 is compressed into low-pressure compressor 1, while temperature increases,
As low-pressure compressed air 12, into heat exchanger 7.Fuel 21 is heated as preheating into heat exchanger 7 by low-pressure compressed air 12
Fuel 22.Low-pressure compressed air 12 is cooled, is further compressed from heat exchanger 7 into high-pressure compressor 2.In order to obtain most
Good total compressor efficiency, the compression ratio of low-pressure compressor 1 need to control between 11-20, and preferably 16, high-pressure compressor 2
Compression ratio then controls between 8-12, and preferably 9.The fuel 22 of preheating comes out from heat exchanger 7 and is directly entered combustion chamber 3, high pressure pressure
Contracting air 14 also enters combustion chamber 3, fuel and air from high-pressure compressor 2 out and generates height in the burning of 3 internal mix of combustion chamber
Warm high pressure gas 15 pushes 4 blade of turbine rotation warp beam 6 to export mechanical work, and generator 5 converts the mechanical work that axis 6 exports to
Electric energy.The exhaust of turbine 4 16 is directly discharged into atmosphere.
Embodiment 2 is using the Combined cycle gas-steam turbine device for the pre-heating fuel that exchanges heat between grade, as shown in Fig. 2, implementing
On the basis of example 1, waste heat boiler 31, steam turbine 32, generator 33, shaft coupling 34, condenser 35, feed pump 36 are increased.
On the basis of 1 gas turbine simple cycle of embodiment, the exhaust of turbine 4 16 does not enter the method for operation of embodiment 2
Atmosphere, but enter waste heat boiler 31 and heat water supply 41 as superheated steam 42, superheated steam 42 enters back into the driving of steam turbine 32
Blade rotation, converts mechanical energy for the thermal energy of superheated steam 42, the rotation of 33 rotor of generator is driven by shaft coupling 34, by machine
Tool can be converted into power output.The steam exhaust 43 that steam turbine 32 is discharged becomes condensed water 44 in 35 internal condensate of condenser, then by giving
36 pressurized delivered of water pump to waste heat boiler 31 completes steam circulation.Waste heat boiler exhaust 17 is directly entered atmosphere.
As shown in figure 3, fuel temperature, which is promoted to about 200 DEG C from 30 DEG C, can increase gas turbine proficiency about 0.4%, it is right
In Combined cycle gas-steam turbine unit, Combined cycle gas-steam turbine whole efficiency about 0.4% can be equally promoted.
Claims (3)
1. a kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade, which is characterized in that including axis (6) and in axis (6)
On the low-pressure compressor (1), high-pressure compressor (2), turbine (4) and the generator (5) that set gradually, the low-pressure compressor
(1) it is provided between high-pressure compressor (2) heat exchanger (7), combuster is set between high-pressure compressor (2) and turbine (4)
(3), the heat exchanger (7) inner part is independent fuel conduit and air pipe line, the connection of heat exchanger (7) fuel conduit entrance
Fuel (21), the outlet of heat exchanger (7) fuel conduit are connected with combustion chamber (3) entrance, and the connection of heat exchanger (7) air pipe line entrance is low
Compressor (1) outlet is pressed, heat exchanger (7) air pipe line outlet connection high-pressure compressor (2) entrance, the combustion chamber (3) go out
Mouthful be connected on turbine (4) entrance, the turbine (4) output end be exhaust outlet or with waste heat boiler (31) gas side feeder connection
It is connected.
2. a kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade according to claim 1, it is further characterized in that,
Described waste heat boiler (31) inner part is independent the gentle wing passage of water wing passage, water wing passage outlet connection steam turbine
(32) entrance, steam turbine (32) are connected by shaft coupling (34) driven generator (33), the steam turbine (32) steam exhaust output end
It connects condenser (35), condenser (35) is connected to waste heat boiler (31) water wing passage entrance by feed pump (36), and described is remaining
Heat boiler (31) gas side channel outlet is provided with exhaust apparatus.
3. a kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade according to claim 1, which is characterized in that change
Hot device (7), which exchanges the partial heat of low-pressure compressed air (12), gives fuel (21), then the fuel by preheating (22) is by this part
Heat is taken back combustion chamber (3), meanwhile, the temperature of high-pressure compressor (2) import compressed air is reduced, helps to reduce high pressure pressure
Mechanism of qi (2) wasted work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821231167.9U CN209145714U (en) | 2018-08-01 | 2018-08-01 | A kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821231167.9U CN209145714U (en) | 2018-08-01 | 2018-08-01 | A kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade |
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| CN209145714U true CN209145714U (en) | 2019-07-23 |
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| CN201821231167.9U Active CN209145714U (en) | 2018-08-01 | 2018-08-01 | A kind of gas-turbine installation using the pre-heating fuel that exchanges heat between grade |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026400A (en) * | 2018-08-01 | 2018-12-18 | 中国华能集团有限公司 | A kind of gas turbine engine systems and method using the pre-heating fuel that exchanges heat between grade |
| CN113565630A (en) * | 2021-08-03 | 2021-10-29 | 江苏风行动力科技有限公司 | Gas cooling device and cooling method based on gas turbine compressor |
-
2018
- 2018-08-01 CN CN201821231167.9U patent/CN209145714U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026400A (en) * | 2018-08-01 | 2018-12-18 | 中国华能集团有限公司 | A kind of gas turbine engine systems and method using the pre-heating fuel that exchanges heat between grade |
| CN113565630A (en) * | 2021-08-03 | 2021-10-29 | 江苏风行动力科技有限公司 | Gas cooling device and cooling method based on gas turbine compressor |
| CN113565630B (en) * | 2021-08-03 | 2022-04-05 | 江苏风行动力科技有限公司 | Gas cooling device and cooling method based on gas turbine compressor |
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