CN107143391A - A kind of new middle backheating gas turbine combined cycle system - Google Patents
A kind of new middle backheating gas turbine combined cycle system Download PDFInfo
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- CN107143391A CN107143391A CN201611165912.XA CN201611165912A CN107143391A CN 107143391 A CN107143391 A CN 107143391A CN 201611165912 A CN201611165912 A CN 201611165912A CN 107143391 A CN107143391 A CN 107143391A
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- 239000007789 gas Substances 0.000 claims abstract description 43
- 238000002485 combustion reaction Methods 0.000 claims abstract description 32
- 239000002918 waste heat Substances 0.000 claims abstract description 18
- 239000003245 coal Substances 0.000 claims abstract description 12
- 239000000567 combustion gas Substances 0.000 claims abstract description 7
- 230000009467 reduction Effects 0.000 claims abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 15
- 239000003546 flue gas Substances 0.000 claims description 15
- 239000000446 fuel Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000012857 repacking Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 230000001914 calming effect Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
- F01K23/103—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle with afterburner in exhaust boiler
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- 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
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
-
- 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
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Landscapes
- 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)
Abstract
The invention discloses a kind of new middle backheating gas turbine circulatory system for belonging to power station energy-saving field, the system mainly includes the devices such as combustion gas turbine, combustion chamber, compressor, steam turbine high-pressure cylinder, Steam Turbine Through IP Admission, turbine low pressure cylinder, generator, condenser, high-pressure superheater 2, reheater 2, reheater 1, high-pressure superheater 1, high pressure evaporator, high-pressure economizer, middle pressure superheater, low-pressure superheater, high-pressure economizer 2, middle pressure evaporator, middle pressure economizer, high-pressure economizer 1, low pressure evaporator, low-pressure coal saver, regenerator.By the location arrangements regenerator inside classical three-pressure reheat waste heat boiler, so that Combined-cycle Gas Turbine Unit caused by improving classical regenerator transformation goes out the influence of work(reduction, regenerator full working scope heat transfer temperature difference is reduced；Improve gas utility.It is suitable with the Combined Cycle Unit without extraction cycle that the whole new middle backheating gas turbine circulatory system not only designs work(, and regenerator runnability is improved under variable working condition, and then total system operation characteristic is improved, there is preferable application prospect in engineering.
Description
Technical field
The invention belongs to power station energy-saving field, more particularly to a kind of new middle backheating gas turbine circulatory system.
Background technology
Gas Turbine Combined-cycle system is to utilize natural gas or oil etc. to be fuel, passes through compressed air after-combustion and produces height
Warm high pressure flue gas, and then utilize a kind of efficient circulation mode of gas turbine and waste heat boiler progress heat to power output.
Gas Turbine Combined-cycle system has the advantages that startup is fast, the thermal efficiency is high, peak modulation capacity is strong, pollute small, closely several
Quickly grown over 10 years, by taking the 9H type gas turbines of GE companies as an example, its turbine rotor entrance combustion gas stagnation temperature and design air stream
Amount respectively reaches 1430 °C and 685kg/s, and Design compression ratio is promoted to 23.Gas turbine cycle efficiency high is up to 41.8%, combined cycle
Improved efficiency is to 61.8%, and combined cycle is exerted oneself up to 755MW.As gas turbine cycle parameter is improved, waste heat boiler main steam
Pressure is continuously increased, and the more advanced waste heat boiler form of current heavy combustion engine matching is three-pressure reheat waste heat boiler.
Backheat technology is used in Gas Turbine Combined-cycle to improve its cycle efficieny, because higher combustion can be obtained
Burn chamber inlet temperature and less Fuel Consumption.Fuel is heated in combined cycle can reduce total combustion under the identical operating mode of combustion engine
Expect consumption, wherein bottoming cycle feedwater is the typical thermal source of fuel heating.But the arrangement of regenerator can absorb gas turbine row
Vapour high temperature section energy, causes the generating capacity of combined cycle system to decline seriously.
Gas Turbine Combined-cycle is the industrial generation form that the whole world is greatly developed in recent decades.To adapt to electricity market
Fast development and developed in harmony between power grid security and clean environment firendly, we improve combustion in the urgent need to finding new approach
The efficiency of gas-turbine combined cycle, this turns into the problem of China's power industry pay attention to day by day.
The present invention proposes a kind of a kind of new middle backheating gas turbine circulatory system, and it is a kind of new to be applied to combustion
Gas-turbine circulating power station, its core design thought is：Pass through the position cloth inside classical three-pressure reheat waste heat boiler
Regenerator is put, so that Combined-cycle Gas Turbine Unit caused by improving traditional regenerator transformation goes out the influence of work(reduction, is subtracted
Regenerator full working scope heat transfer temperature difference is lacked；Improve gas utility.The whole new middle backheating gas turbine circulatory system is not
Only design work(suitable with the Combined Cycle Unit without extraction cycle, and regenerator runnability is carried under variable working condition
Height, and then total system operation characteristic is improved, there is preferable application prospect in engineering.
The content of the invention
The purpose of the present invention is to propose to a kind of new middle backheating gas turbine circulatory system, the system mainly includes combustion
Gas turbine, combustion chamber, compressor, steam turbine high-pressure cylinder, Steam Turbine Through IP Admission, turbine low pressure cylinder, generator, condenser, height
Press superheater 1, reheater 2, reheater 1, high-pressure superheater 1, high pressure evaporator, high-pressure economizer, middle pressure superheater, low pressure mistake
Hot device, high-pressure economizer 2, middle pressure evaporator, middle pressure economizer, high-pressure economizer 1, low pressure evaporator, low-pressure coal saver, backheat
The devices such as device；It is characterized in that：Air is by compressor（3）Enter regenerator after compression（23）Heat absorption, afterwards into combustion chamber（2）
With fuel mixed combustion, the high-temperature flue gas of generation enters gas turbine（1）Acting, gas turbine（1）Exhaust flows through high pressure superheater
Device 2（9）, reheater 2（10）, reheater 1（11）, high-pressure superheater 1（12）Afterwards, regenerator is flowed into（23）With compressor（3）Go out
Mouth air heat-exchange, flue gas flows through high pressure evaporator after heat exchange（13）, high-pressure economizer 3（14）, middle pressure superheater（15）, low pressure mistake
Hot device（16）, high-pressure economizer 2（17）, middle pressure evaporator（18）, middle pressure economizer（19）, high-pressure economizer 1（20）, low pressure steam
Send out device（21）And low-pressure coal saver（22）Side by side to air.Water in vapour-cycling is from condenser（8）After out, flow into low pressure and save
Coal device（22）, low pressure evaporator（21）After be divided into three fluid streams, first plume crosses high-pressure economizer 1（20）, high-pressure economizer 2
（17）, high-pressure economizer 3（14）, high pressure evaporator（13）, high-pressure superheater 1（12）, high-pressure superheater 2（9）Enter steamer afterwards
Machine high pressure cylinder（4）Acting, steam discharge and middle pressure superheater（15）Reheater 1 is flowed through after outlet steam mixing（11）, reheater 2
（10）, then flow into Steam Turbine Through IP Admission（5）Acting, Steam Turbine Through IP Admission（5）Steam discharge and low-pressure superheater（16）Export steam
Enter turbine low pressure cylinder after mixing（6）Acting, turbine low pressure cylinder（6）Steam discharge flows into condenser（8）After be condensed into water.Low pressure
Evaporator（21）Export the excessively middle pressure economizer of second plume（19）, middle pressure evaporator（18）, middle pressure superheater（15）After import vapour
Turbine high pressure cylinder（4）Steam discharge, together flows into reheater 1（11）.Low pressure evaporator（21）Export the 3rd plume and cross low-pressure superheater
（16）After import Steam Turbine Through IP Admission（5）Steam discharge, together flows into turbine low pressure cylinder（6）.Compressor（3）With gas turbine（1）
It is coaxial and connect generator（7）, steam turbine high-pressure cylinder（4）, Steam Turbine Through IP Admission（5）, turbine low pressure cylinder（6）It is coaxial and connect
Generator（7）.
In described system, regenerator（23）Innovation has been arranged in high-pressure superheater 1（12）And high pressure evaporator（13）It
Between, so as to rationally make use of smoke distribution, system goes out work(reduction, and variable working condition caused by reducing traditional regenerator arrangement
Performance is equally preferable.Backheat implement body position is influenceed by the design structure of waste heat boiler with flue-gas temperature changes in distribution, because
This can be adjusted to be optimal effect according to different waste heat boiler structures, the correspondence repacking position of regenerator.
Described system is by compressor（3）Outlet air flows through regenerator（23）Flowing in combustion chamber again afterwards（2）, so as to improve
Combustion chamber（2）Entering air temperature, system go out work(it is close in the case of saved consumption fuel quantity, improve system effect
Rate.
Compressor in described system（3）Outlet air is flowing into regenerator（23）Bypass valve is devised on pipeline directly to connect
Logical regenerator（23）Connect combustion chamber（2）Pipeline so that need reduce heat exchange amount when bypass valve is opened as needed, will
Partial air flows directly into combustion chamber, so as to change backheat effect as needed, enhances future in engineering applications.
The new middle backheating gas turbine circulatory system of the present invention has the following advantages that：
1. regenerator innovation has been arranged between high-pressure superheater 1 and high pressure evaporator, so that smoke distribution is rationally make use of,
System goes out work(reduction caused by reducing traditional regenerator arrangement, and off design performance is equally preferable.Backheat implement body cloth
Seated position is influenceed by the design structure of waste heat boiler with flue-gas temperature changes in distribution, therefore according to different waste heat boiler structures, is returned
The correspondence repacking position of hot device can be adjusted to be optimal effect.
2. blower outlet air is flowed through into after regenerator flowing in combustion chamber again, so as to improve entry of combustion chamber air
Temperature, system go out work(it is close in the case of saved consumption fuel quantity, improve system effectiveness.
3. blower outlet air devises bypass valve on regenerator pipeline is flowed into and directly connects regenerator connection burning
The pipeline of room, so as to open bypass valve as needed when needing and reducing heat exchange amount, combustion chamber is flowed directly into by partial air,
Therefore backheat effect can be changed as needed, enhances future in engineering applications.
4. backheat implement body position is flexibly, its effect is distributed by the design structure of waste heat boiler with flue-gas temperature to be become
Change influence, therefore according to different waste heat boiler structures, the correspondence repacking position of regenerator can be adjusted to be optimal effect.
Brief description of the drawings
Fig. 1 is new middle backheating gas turbine circulatory system schematic diagram
Embodiment
The present invention proposes a kind of new middle backheating gas turbine circulatory system.It is explained below in conjunction with the accompanying drawings with example.
In new middle backheating gas turbine circulatory system schematic diagram as shown in Figure 1, new middle backheating gas turbine
The circulatory system mainly includes combustion gas turbine, combustion chamber, compressor, steam turbine high-pressure cylinder, Steam Turbine Through IP Admission, steam turbine low-pressure
Cylinder, generator, condenser, high-pressure superheater 1, reheater 2, reheater 1, high-pressure superheater 1, high pressure evaporator, high pressure save coal
Device, middle pressure superheater, low-pressure superheater, high-pressure economizer 2, middle pressure evaporator, middle pressure economizer, high-pressure economizer 1, low pressure are steamed
Send out the devices such as device, low-pressure coal saver, regenerator；It is characterized in that：Air is by compressor（3）Enter regenerator after compression（23）Inhale
Heat, afterwards into combustion chamber（2）With fuel mixed combustion, the high-temperature flue gas of generation enters gas turbine（1）Acting, gas turbine
（1）Exhaust flows through high-pressure superheater 2（9）, reheater 2（10）, reheater 1（11）, high-pressure superheater 1（12）Afterwards, backheat is flowed into
Device（23）With compressor（3）Outlet air exchanges heat, and flue gas flows through high pressure evaporator after heat exchange（13）, high-pressure economizer 3（14）, in
Press superheater（15）, low-pressure superheater（16）, high-pressure economizer 2（17）, middle pressure evaporator（18）, middle pressure economizer（19）, it is high
Press economizer 1（20）, low pressure evaporator（21）And low-pressure coal saver（22）Side by side to air.Water in vapour-cycling is from condenser
（8）After out, low-pressure coal saver is flowed into（22）, low pressure evaporator（21）After be divided into three fluid streams, first plume crosses high pressure and saves coal
Device 1（20）, high-pressure economizer 2（17）, high-pressure economizer 3（14）, high pressure evaporator（13）, high-pressure superheater 1（12）, height presses through
Hot device 2（9）Enter steam turbine high-pressure cylinder afterwards（4）Acting, steam discharge and middle pressure superheater（15）Reheating is flowed through after outlet steam mixing
Device 1（11）, reheater 2（10）, then flow into Steam Turbine Through IP Admission（5）Acting, Steam Turbine Through IP Admission（5）Steam discharge and low area overheat
Device（16）Enter turbine low pressure cylinder after exporting steam mixing（6）Acting, turbine low pressure cylinder（6）Steam discharge flows into condenser（8）
After be condensed into water.Low pressure evaporator（21）Export the excessively middle pressure economizer of second plume（19）, middle pressure evaporator（18）, in press through heat
Device（15）After import steam turbine high-pressure cylinder（4）Steam discharge, together flows into reheater 1（11）.Low pressure evaporator（21）Export the 3rd strand
Flow through low-pressure superheater（16）After import Steam Turbine Through IP Admission（5）Steam discharge, together flows into turbine low pressure cylinder（6）.Compressor（3）
With gas turbine（1）It is coaxial and connect generator（7）, steam turbine high-pressure cylinder（4）, Steam Turbine Through IP Admission（5）, turbine low pressure cylinder
（6）It is coaxial and connect generator（7）.
As shown in figure 1, in the new middle backheating gas turbine circulatory system, regenerator（23）Innovation has been arranged in high pressure
Superheater 1（12）And high pressure evaporator（13）Between, so as to rationally make use of smoke distribution, reduce traditional regenerator arrangement side
System goes out work(reduction caused by case, and off design performance is equally preferable.Backheat implement body position is designed by waste heat boiler
Structure influences with flue-gas temperature changes in distribution, therefore according to different waste heat boiler structures, the correspondence repacking position of regenerator can be entered
Row adjusts to be optimal effect.
As shown in figure 1, in the new middle backheating gas turbine circulatory system, by compressor（3）Outlet air flows through back
Hot device（23）Flowing in combustion chamber again afterwards（2）, so as to improve combustion chamber（2）Entering air temperature, the close feelings of work(are gone out in system
Consumption fuel quantity has been saved under condition, system effectiveness is improved.
As shown in figure 1, in the new middle backheating gas turbine circulatory system, compressor（3）Outlet air is being flowed into back
Hot device（23）Bypass valve is devised on pipeline and directly connects regenerator（23）Connect combustion chamber（2）Pipeline so that need subtract
Bypass valve is opened as needed during few heat exchange amount, partial air is flowed directly into combustion chamber, so as to change as needed
Backheat effect, enhances future in engineering applications.
Present invention firstly provides regenerator is arranged in inside Gas Turbine Combined-cycle waste heat boiler, so as to improve
Combined cycle caused by regenerator goes out after the relatively low adverse effect of work(, and classification rationally using combustion gas turbine smoke evacuation energy, retains high
Warm flue gas characteristic and then vapour-cycling design parameter is maintained, by the interval flue gas utilization of reasonable temperature in lifting gas turbine cycle
Performance, is finally reached the effect that combined cycle overall performance is substantially improved and does not have a strong impact on out function power.Meanwhile, in regenerator
Cold inlet leading portion is provided with regenerator bypass runner and is directly connected to regenerator cold flow outlet back segment, by bypass flow control,
It can reach that reduction heat loss obtains optimal backheat effect according to machine unit characteristic dynamic regulation regenerator heat exchange amount during variable parameter operation
Purpose.Specific regenerator position proposed by the present invention is relatively flexible, can be according to waste heat boiler device characteristics and flue gas temperature
Degree distribution, changes regenerator position to reach different degrees of lifting effect.Therefore the backheating gas turbine circulatory system in the middle of
Compared to traditional heat exchange cycle system, future in engineering applications is greatly improved, while having stronger practicality and scientific value.
Claims (4)
1. the invention discloses a kind of new middle backheating gas turbine circulatory system for belonging to power station energy-saving field, system master
To include combustion gas turbine, it is combustion chamber, compressor, steam turbine high-pressure cylinder, Steam Turbine Through IP Admission, turbine low pressure cylinder, generator, solidifying
Vapour device, high-pressure superheater 1, reheater 2, reheater 1, high-pressure superheater 1, high pressure evaporator, high-pressure economizer, in press through heat
Device, low-pressure superheater, high-pressure economizer 2, middle pressure evaporator, middle pressure economizer, high-pressure economizer 1, low pressure evaporator, low pressure are saved
The devices such as coal device, regenerator；It is characterized in that：Air is by compressor（3）Enter regenerator after compression（23）Heat absorption, enters afterwards
Combustion chamber（2）With fuel mixed combustion, the high-temperature flue gas of generation enters gas turbine（1）Acting, gas turbine（1）Exhaust is flowed through
High-pressure superheater 2（9）, reheater 2（10）, reheater 1（11）, high-pressure superheater 1（12）Afterwards, regenerator is flowed into（23）With calming the anger
Machine（3）Outlet air exchanges heat, and flue gas flows through high pressure evaporator after heat exchange（13）, high-pressure economizer 3（14）, middle pressure superheater
（15）, low-pressure superheater（16）, high-pressure economizer 2（17）, middle pressure evaporator（18）, middle pressure economizer（19）, high-pressure economizer 1
（20）, low pressure evaporator（21）And low-pressure coal saver（22）Side by side to air；Water in vapour-cycling is from condenser（8）Out
Afterwards, low-pressure coal saver is flowed into（22）, low pressure evaporator（21）After be divided into three fluid streams, first plume crosses high-pressure economizer 1（20）、
High-pressure economizer 2（17）, high-pressure economizer 3（14）, high pressure evaporator（13）, high-pressure superheater 1（12）, high-pressure superheater 2（9）
Enter steam turbine high-pressure cylinder afterwards（4）Acting, steam discharge and middle pressure superheater（15）Reheater 1 is flowed through after outlet steam mixing（11）、
Reheater 2（10）, then flow into Steam Turbine Through IP Admission（5）Acting, Steam Turbine Through IP Admission（5）Steam discharge and low-pressure superheater（16）Go out
Enter turbine low pressure cylinder after mouth steam mixing（6）Acting, turbine low pressure cylinder（6）Steam discharge flows into condenser（8）After be condensed into
Water；Low pressure evaporator（21）Export the excessively middle pressure economizer of second plume（19）, middle pressure evaporator（18）, middle pressure superheater（15）Afterwards
Import steam turbine high-pressure cylinder（4）Steam discharge, together flows into reheater 1（11）；Low pressure evaporator（21）Export the 3rd plume and cross low pressure
Superheater（16）After import Steam Turbine Through IP Admission（5）Steam discharge, together flows into turbine low pressure cylinder（6）；Compressor（3）With combustion gas wheel
Machine（1）It is coaxial and connect generator（7）, steam turbine high-pressure cylinder（4）, Steam Turbine Through IP Admission（5）, turbine low pressure cylinder（6）Coaxially
And connect generator（7）.
2. the new middle backheating gas turbine circulatory system of one kind according to claim 1, it is characterised in that regenerator
（23）Innovation has been arranged in high-pressure superheater 1（12）And high pressure evaporator（13）Between, so as to rationally make use of smoke distribution, subtract
System goes out work(reduction caused by having lacked traditional regenerator arrangement, and off design performance is equally preferable；Backheat implement body is arranged
Position is influenceed by the design structure of waste heat boiler with flue-gas temperature changes in distribution, therefore according to different waste heat boiler structures, backheat
The correspondence repacking position of device can be adjusted to be optimal effect.
3. the new middle backheating gas turbine circulatory system of one kind according to claim 1, it is characterised in that by compressor
（3）Outlet air flows through regenerator（23）Flowing in combustion chamber again afterwards（2）, so as to improve combustion chamber（2）Entering air temperature,
System go out work(it is close in the case of saved consumption fuel quantity, improve system effectiveness.
4. the new middle backheating gas turbine circulatory system of one kind according to claim 1, it is characterised in that compressor
（3）Outlet air is flowing into regenerator（23）Bypass valve is devised on pipeline and directly connects regenerator（23）Connect combustion chamber（2）
Pipeline so that need reduce heat exchange amount when bypass valve is opened as needed, partial air is flowed directly into combustion chamber, from
And backheat effect can be changed as needed, enhance future in engineering applications.
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| CN201611165912.XA CN107143391A (en) | 2016-12-16 | 2016-12-16 | A kind of new middle backheating gas turbine combined cycle system |
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| CN201611165912.XA CN107143391A (en) | 2016-12-16 | 2016-12-16 | A kind of new middle backheating gas turbine combined cycle system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855079A (en) * | 2019-02-02 | 2019-06-07 | 华电电力科学研究院有限公司 | A kind of combined cycle power peak regulation system and its operation method based on steam extraction coupling accumulation of heat |
| CN110500184A (en) * | 2019-08-28 | 2019-11-26 | 上海明华电力科技有限公司 | A kind of afterheat utilizing system promoting Gas Turbine Combined-cycle economy |
| CN108425711B (en) * | 2018-03-27 | 2023-06-06 | 哈尔滨电气股份有限公司 | Three-turbine coaxial arrangement supercritical carbon dioxide circulating power generation system for gas turbine waste heat recovery |
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| CN108425711B (en) * | 2018-03-27 | 2023-06-06 | 哈尔滨电气股份有限公司 | Three-turbine coaxial arrangement supercritical carbon dioxide circulating power generation system for gas turbine waste heat recovery |
| CN109855079A (en) * | 2019-02-02 | 2019-06-07 | 华电电力科学研究院有限公司 | A kind of combined cycle power peak regulation system and its operation method based on steam extraction coupling accumulation of heat |
| CN109855079B (en) * | 2019-02-02 | 2023-11-14 | 华电电力科学研究院有限公司 | Combined cycle power peak regulation system based on steam extraction coupling heat accumulation and operation method thereof |
| CN110500184A (en) * | 2019-08-28 | 2019-11-26 | 上海明华电力科技有限公司 | A kind of afterheat utilizing system promoting Gas Turbine Combined-cycle economy |
| CN110500184B (en) * | 2019-08-28 | 2022-04-01 | 上海明华电力科技有限公司 | Waste heat utilization system for improving gas turbine combined cycle economy |
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