CN215370047U - Gas-steam combined cycle power station - Google Patents
Gas-steam combined cycle power station Download PDFInfo
- Publication number
- CN215370047U CN215370047U CN202121232878.XU CN202121232878U CN215370047U CN 215370047 U CN215370047 U CN 215370047U CN 202121232878 U CN202121232878 U CN 202121232878U CN 215370047 U CN215370047 U CN 215370047U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- chilled water
- gas
- gas turbine
- steam
- 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.)
- Active
Links
Images
Classifications
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
-
- 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
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model provides a gas-steam combined cycle power station, which can solve the problem that the generating capacity of a unit is reduced along with the rise of the ambient temperature in the daytime, improve the generating capacity of the unit, improve the load of the unit at night to a certain extent and improve the overall efficiency of the unit. An isolation door is arranged on a pipeline connecting the waste heat boiler and the chimney; the smoke inlet of the lithium bromide refrigerating unit is connected with the waste heat boiler through a pipeline, and an isolation door is arranged on the pipeline; the smoke outlet of the lithium bromide refrigerating unit is connected with a chimney through a pipeline, and an isolation door is arranged on the pipeline; the steam extraction inlet of the lithium bromide refrigerating unit is connected with a steam turbine through a number pipeline, and an isolation door is arranged on the pipeline; the chilled water outlet of the lithium bromide refrigerating unit is connected with a chilled water storage tank through a pipeline; the chilled water storage tank is connected with the chilled water delivery pump, the chilled water delivery pump is connected with a chilled water inlet of the user side, and a chilled water outlet of the user side is connected with a chilled water inlet of the lithium bromide refrigerating unit.
Description
Technical Field
The utility model relates to a gas-steam combined cycle power station.
Background
At present, domestic gas and steam combined cycle power stations have the following problems:
1. the combined cycle unit power generation capacity decreases as the ambient temperature increases during the hottest summer period. On the air inlet side of the combustion engine, the power generation capacity of the combustion engine is reduced due to the fact that the volume flow of inlet air is reduced when the ambient temperature rises; on the cooling water side, the cooling water temperature rises in the high-temperature period in summer, so that the insufficient cooling capacity of oil coolers, generator air coolers, water ring vacuum pumps and the like of a gas turbine and a steam turbine is caused, and the power generation capacity of a unit is influenced. In the extreme case, the machine may be shut down, and the safe operation of the machine set is threatened.
2. The waste heat capacity of the waste heat boiler is not fully utilized, and particularly under the condition of good gas quality, the waste heat capacity of the waste heat boiler can be further utilized to reduce the exhaust gas temperature.
3. The load is not uniform at different time intervals. The power load requirement at night is generally low, and the operation efficiency of the unit is not high; the power load demand is high during the daytime, but the power generation capacity is reduced to fail to meet the power demand due to the limitation described in the above first section during the high temperature period.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides the gas-steam combined cycle power station with a reasonable structural design, which can solve the problem that the generating capacity of a unit is reduced along with the rise of the ambient temperature in the daytime, improve the generating capacity of the unit, improve the load of the unit at night to a certain extent and improve the overall efficiency of the unit.
The technical scheme adopted by the utility model for solving the problems is as follows: a gas-steam combined cycle power station comprises a waste heat boiler, a chimney, a steam turbine and a user side; the waste heat boiler is connected with the chimney through a pipeline; the method is characterized in that: the system also comprises a lithium bromide refrigerating unit, a chilled water delivery pump and a chilled water storage tank; an isolation door is arranged on a pipeline connecting the waste heat boiler and the chimney; the smoke inlet of the lithium bromide refrigerating unit is connected with the waste heat boiler through a pipeline, and an isolation door is arranged on the pipeline; the smoke outlet of the lithium bromide refrigerating unit is connected with a chimney through a pipeline, and an isolation door is arranged on the pipeline; the steam extraction inlet of the lithium bromide refrigerating unit is connected with a steam turbine through a pipeline, and an isolation door is arranged on the pipeline; a chilled water outlet of the lithium bromide refrigerating unit is connected with a chilled water storage tank through a pipeline; the chilled water storage tank is connected with the chilled water delivery pump, the chilled water delivery pump is connected with a chilled water inlet of the user side, and a chilled water outlet of the user side is connected with a chilled water inlet of the lithium bromide refrigerating unit.
The lithium bromide refrigeration unit is connected with the circulating cooling water inlet pipeline and the circulating cooling water outlet pipeline.
The lithium bromide refrigerating unit is a steam-smoke waste heat type double-drive lithium bromide refrigerating unit.
The utility model also comprises a gas prepositive module, a gas turbine and a condenser; the gas front-end module is connected with a gas turbine, the gas turbine is connected with a waste heat boiler, the waste heat boiler is connected with a steam turbine and a condenser, a gas turbine generator is connected with the gas turbine and the gas turbine generator, and the steam turbine is also connected with a steam turbine generator and the condenser.
The condenser is connected with a circulating cooling water inlet pipeline and a circulating cooling water outlet pipeline.
The user side of the utility model comprises a gas turbine air inlet cooling coil, a gas turbine oil cooler, a gas turbine generator air cooler, a steam turbine oil cooler, a steam turbine generator air cooler and a water ring vacuum pump cooler; the chilled water delivery pump is respectively connected with chilled water inlets of the gas turbine air inlet cooling coil, the gas turbine oil cooler, the gas turbine generator air cooler, the steam turbine oil cooler, the steam turbine generator air cooler and the water ring vacuum pump cooler, and chilled water outlets of the gas turbine air inlet cooling coil, the gas turbine oil cooler, the gas turbine generator air cooler, the steam turbine oil cooler, the steam turbine generator air cooler and the water ring vacuum pump cooler are all connected with the chilled water inlet of the lithium bromide refrigerating unit.
Compared with the prior art, the utility model has the following advantages and effects: by arranging the lithium bromide refrigerating unit, the waste heat potential of the waste heat boiler can be further effectively utilized, the exhaust gas temperature is reduced, and the unit efficiency is improved. Through setting up the frozen water storage tank, can improve the load of gas steam combined cycle unit at night, improve unit overall efficiency, the unit except satisfying night basic power load, can also pass through the cold-storage mode with unnecessary energy and store, treats daytime high temperature period release. Through the combination of the two, the problem that the generating capacity of the unit is reduced along with the rise of the ambient temperature in the daytime can be solved, the generating capacity of the unit is improved, the load of the unit at night is improved to a certain extent, and the overall efficiency of the unit is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
The embodiment of the utility model comprises a gas front-end module 1, a gas turbine 2, a gas turbine generator 3, a waste heat boiler 4, a chimney 8, a steam turbine 9, a steam turbine generator 10, a condenser 11, a lithium bromide refrigerating unit 12, a chilled water storage tank 13, a chilled water delivery pump 14 and a user side.
The user side comprises a gas turbine inlet air cooling coil 15, a gas turbine oil cooler 16, a gas turbine generator air cooler 17, a gas turbine oil cooler 18, a gas turbine generator air cooler 19 and a water ring vacuum pump cooler 20.
Leading module of gas 1 and gas turbine 2 are connected through a pipeline 01, and gas turbine 2 and exhaust-heat boiler 4 are connected through No. two pipelines 02, and exhaust-heat boiler 4 and chimney 8 are connected through No. three pipelines 03, and exhaust-heat boiler 4 is connected with steam turbine 9 through No. ten pipeline 010, is connected with condenser 11 through No. eleven pipeline 011, and gas turbine 2 is connected with gas turbine generator 3, and steam turbine 9 is connected with turbo generator 10 and condenser 11.
The flue gas inlet of lithium bromide refrigerating unit 12 is connected with exhaust-heat boiler 4 through No. four pipelines 04, and the exhanst gas outlet is connected with chimney 8 through No. five pipelines 05, and the steam extraction import is connected with steam turbine 9 through No. four pipelines 014, and the chilled water export is connected with chilled water storage tank 13 through No. six pipelines 06.
The chilled water storage tank 13 is connected with a chilled water delivery pump 14 through a seventh pipeline 07, the chilled water delivery pump 14 is respectively connected with chilled water inlets of a gas turbine inlet cooling coil 15, a gas turbine oil cooler 16, a gas turbine generator air cooler 17, a steam turbine oil cooler 18, a steam turbine generator air cooler 19 and a water ring vacuum pump cooler 20 through an eighth pipeline 08, and chilled water outlets of the gas turbine inlet cooling coil 15, the gas turbine oil cooler 16, the gas turbine generator air cooler 17, the steam turbine oil cooler 18, the steam turbine generator air cooler 19 and the water ring vacuum pump cooler 20 are respectively connected with a chilled water inlet of the lithium bromide refrigerating unit 12 through a ninth pipeline 09.
The condenser 11 and the lithium bromide refrigerator group 12 are both connected to a recirculated cooling water inlet pipe 012 and a recirculated cooling water outlet pipe 013.
No. three pipelines 03, No. four pipelines 04 and No. five pipelines 05 are respectively provided with an isolation door 5, an isolation door 6 and an isolation door 7, and No. fourteen pipelines 014 are provided with an isolation door 21.
The external power load demand at night is generally lower, and the unit load is not high under the normal condition, and the unit overall efficiency descends, and at this moment, the load factor of unit is promoted to a certain extent in the operation, promotes the efficiency of unit, except that satisfying the external power load demand at night, opens isolation door 21, and the unit load of increase passes through the steam extraction, drives lithium bromide refrigerating unit 12. And meanwhile, the isolating door 5 is closed, the isolating door 6 and the isolating door 7 are opened, and the waste heat smoke drives the lithium bromide refrigerating unit 12 to further reduce the smoke exhaust temperature and recover the waste heat. The chilled water produced by the lithium bromide refrigerating unit 12 is collected and stored in the chilled water storage tank 13 through a No. six pipeline 06 for use in high-temperature time periods in the daytime.
With the temperature rise in daytime, the external power load demand rises, and the unit load rises. At this time, the isolation door 21 is slowly closed, and the drive steam is closed, so that the power generation capacity reaches the highest state. Maintain that isolation door 5 closes, isolation door 6 and isolation door 7 are in the open mode, and waste heat flue gas goes to drive lithium bromide refrigerating unit 12 and keeps normal operating condition, and the refrigerated water that lithium bromide refrigerating unit 12 was prepared collects through No. six pipeline 06 and stores in refrigerated water storage tank 13. The chilled water delivery pump 14 is started, chilled water is delivered to a gas turbine inlet cooling coil 15, a gas turbine oil cooler 16, a gas turbine generator air cooler 17, a gas turbine oil cooler 18, a gas turbine generator air cooler 19 and a water ring vacuum pump cooler 20 of a user through a seventh pipeline 07 and an eighth pipeline 08 respectively, so that the air inlet temperature of the unit is reduced, the cooling capacity of the oil cooler air cooler is enhanced, the vacuumizing capacity of the water ring vacuum pump is increased, the backpressure of the condenser is reduced, the problem that the generating capacity of the unit is limited and reduced along with the increase of the environmental temperature in daytime is solved, the generating power supply capacity of the unit is improved, and the requirement of the external power load is met. The chilled water is returned to the lithium bromide refrigeration unit 12 from the user side through a nine-line 09 for re-production.
When the lithium bromide refrigerating unit 12 is in the maintenance and shutdown state, the isolation door 21, the isolation door 6 and the isolation door 7 are closed, and the isolation door 5 is opened, so that the lithium bromide refrigerating unit 12 exits the system, and meanwhile, smoke is discharged from the waste heat boiler 4 to the chimney 8 through the third pipeline 03.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the utility model are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.
Claims (6)
1. A gas-steam combined cycle power station comprises a waste heat boiler, a chimney, a steam turbine and a user side; the waste heat boiler is connected with the chimney through a pipeline; the method is characterized in that: the system also comprises a lithium bromide refrigerating unit, a chilled water delivery pump and a chilled water storage tank; an isolation door is arranged on a pipeline connecting the waste heat boiler and the chimney; the smoke inlet of the lithium bromide refrigerating unit is connected with the waste heat boiler through a pipeline, and an isolation door is arranged on the pipeline; the smoke outlet of the lithium bromide refrigerating unit is connected with a chimney through a pipeline, and an isolation door is arranged on the pipeline; the steam extraction inlet of the lithium bromide refrigerating unit is connected with a steam turbine through a pipeline, and an isolation door is arranged on the pipeline; a chilled water outlet of the lithium bromide refrigerating unit is connected with a chilled water storage tank through a pipeline; the chilled water storage tank is connected with the chilled water delivery pump, the chilled water delivery pump is connected with a chilled water inlet of the user side, and a chilled water outlet of the user side is connected with a chilled water inlet of the lithium bromide refrigerating unit.
2. The gas and steam combined cycle power plant of claim 1, wherein: the lithium bromide refrigeration unit is connected with the circulating cooling water inlet pipeline and the circulating cooling water outlet pipeline.
3. The gas and steam combined cycle power plant of claim 1, wherein: the lithium bromide refrigerating unit is a steam-smoke waste heat type double-drive lithium bromide refrigerating unit.
4. The gas and steam combined cycle power plant of claim 2, wherein: the gas turbine also comprises a gas front-end module, a gas turbine and a condenser; the gas front-end module is connected with a gas turbine, the gas turbine is connected with a waste heat boiler, the waste heat boiler is connected with a steam turbine and a condenser, a gas turbine generator is connected with the gas turbine and the gas turbine generator, and the steam turbine is also connected with a steam turbine generator and the condenser.
5. The gas and steam combined cycle power plant of claim 4, wherein: and the condenser is connected with a circulating cooling water inlet pipeline and a circulating cooling water outlet pipeline.
6. The gas and steam combined cycle power plant of claim 1, wherein: the user side comprises a gas turbine air inlet cooling coil, a gas turbine oil cooler, a gas turbine generator air cooler, a steam turbine oil cooler, a steam turbine generator air cooler and a water ring vacuum pump cooler; the chilled water delivery pump is respectively connected with chilled water inlets of the gas turbine air inlet cooling coil, the gas turbine oil cooler, the gas turbine generator air cooler, the steam turbine oil cooler, the steam turbine generator air cooler and the water ring vacuum pump cooler, and chilled water outlets of the gas turbine air inlet cooling coil, the gas turbine oil cooler, the gas turbine generator air cooler, the steam turbine oil cooler, the steam turbine generator air cooler and the water ring vacuum pump cooler are all connected with the chilled water inlet of the lithium bromide refrigerating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121232878.XU CN215370047U (en) | 2021-06-03 | 2021-06-03 | Gas-steam combined cycle power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121232878.XU CN215370047U (en) | 2021-06-03 | 2021-06-03 | Gas-steam combined cycle power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215370047U true CN215370047U (en) | 2021-12-31 |
Family
ID=79633031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121232878.XU Active CN215370047U (en) | 2021-06-03 | 2021-06-03 | Gas-steam combined cycle power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215370047U (en) |
-
2021
- 2021-06-03 CN CN202121232878.XU patent/CN215370047U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201321918Y (en) | Heat power and cold cogeneration device for waste heat utilization of large-scale marine diesel engine | |
| CN205779057U (en) | Closed combined cooling and power energy storage system | |
| CN107905897B (en) | Gas turbine circulating flue gas waste heat recovery and inlet air cooling combined system and method | |
| CN105863753A (en) | Closed combined cooling and power energy storage system | |
| CN214741512U (en) | High-pressure air energy storage power generation system coupled with coal electric heat source | |
| CN110173347B (en) | Waste heat recycling system of coal mine in-use equipment and operation method | |
| EP3396118B1 (en) | Intercooled turbine with thermal storage system | |
| CN112392626B (en) | Waste heat comprehensive energy recovery device for diesel engine | |
| CN113202582B (en) | Compressed air-fuel gas reheating type combined cycle power generation system and method | |
| CN216518291U (en) | Gas turbine inlet air cooling system based on photovoltaic, waste heat utilization and cold accumulation | |
| CN211144758U (en) | Compressed air energy storage system | |
| CN114278535A (en) | Compressed air energy storage and salt cavern coupling system and utilization method | |
| CN106677988B (en) | Wind-solar energy storage system | |
| CN215370047U (en) | Gas-steam combined cycle power station | |
| CN108194153A (en) | Promote the method and device of compressed-air energy-storage system energy conversion efficiency | |
| CN111927588A (en) | Organic Rankine cycle power generation system and method for realizing cascade utilization of waste heat of multi-energy complementary distributed energy system | |
| CN217235920U (en) | Lithium bromide refrigeration air conditioning system with double heat sources | |
| CN110953069A (en) | Multi-energy coupling power generation system of gas turbine power station | |
| RU2643878C1 (en) | Method of operation of the compressed-air power station with an absorption lithium bromide refrigerating system (lbrs) | |
| CN113315152B (en) | Gas turbine peak shaving power station combined with liquid air energy storage and peak shaving method | |
| CN202811075U (en) | Inter-cooled header type gas turbine unit with split compressors | |
| CN214944467U (en) | Compressed air-gas reheating type combined cycle power generation system | |
| CN202811077U (en) | Gas turbine system with inlet cooling and intercooling functions | |
| CN115523559A (en) | Ice-cold thermoelectric energy supply system, winter heating method and summer refrigerating method | |
| CN102900531A (en) | Combustion gas turbine system with inlet cooling and indirect cooling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |