CN114941553A - Starting system and method for thermal generator set in high and medium pressure cylinder starting mode - Google Patents
Starting system and method for thermal generator set in high and medium pressure cylinder starting mode Download PDFInfo
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- CN114941553A CN114941553A CN202210680943.8A CN202210680943A CN114941553A CN 114941553 A CN114941553 A CN 114941553A CN 202210680943 A CN202210680943 A CN 202210680943A CN 114941553 A CN114941553 A CN 114941553A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000002955 isolation Methods 0.000 claims description 34
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
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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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Control Of Turbines (AREA)
Abstract
The invention provides a starting system and a method of a thermal generator set in a high and medium pressure cylinder starting mode, which belong to the technical field of thermal power generation, and the starting system of the thermal generator set in the high and medium pressure cylinder starting mode comprises the following steps: the steam inlet of the high-pressure cylinder is communicated with the superheater and the steam header; the steam inlet of the intermediate pressure cylinder is communicated with the reheater and the steam header; the steam header is started by steam of an adjacent machine; the steam inlet of the low pressure cylinder is communicated with the steam outlet of the intermediate pressure cylinder, and the steam outlet of the low pressure cylinder is communicated with a condenser of the machine; according to the starting system of the thermal generator set in the high and medium pressure cylinder starting mode, steam is supplied to the high pressure cylinder and the medium pressure cylinder through the steam header at the same time, combined starting of the medium pressure cylinder and the high pressure cylinder is achieved, and then quick starting of the set is achieved, so that flexibility of the set is improved, starting time is saved, starting cost is reduced, and emission of pollutants is reduced.
Description
Technical Field
The invention relates to the technical field of thermal power generation, in particular to a starting system and a starting method of a thermal power generator set in a high and medium pressure cylinder starting mode.
Background
Along with the specific gravity increase of clean energy with limited peak regulation capacity such as wind power, solar energy and the like in a power supply structure, the peak regulation demand and the peak regulation difficulty of a power grid are further increased, the number of hours of utilization of a coal-fired unit is reduced year by year in recent years, and the number of start-stop times of the unit is increased year by year due to alternate shutdown and standby of the unit.
Taking the cold starting process of a unit which adopts a high and medium pressure cylinder combined starting mode and is produced by a certain steam turbine plant and the like as an example, the method mainly comprises the following steps: (1) and (5) cleaning the system in a cold state. (2) And putting a shaft seal and vacuumizing. (3) Purging a boiler, igniting, flushing in a thermal state, and raising the temperature and the pressure. (4) The turbine rushes to rotate, increases the speed and warms up. (5) The set constant speed is 3000r/min, the load is increased continuously after the machine is connected to the power grid and with initial load and warmup, and all parameters are checked to be normal, so that the starting process is completed.
In the current cold start process, the required time from water feeding of a boiler to grid connection generally exceeds 15 hours. The starting time is long, the cost of fuel, steam, service power consumption, environmental protection emission and the like generated in the starting process is relatively high, and the requirement of a power grid for quick response of a thermal power unit is difficult to meet.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the starting process in the prior art is difficult to meet the requirement of a power grid on quick response of a thermal power unit, so that a starting system of the thermal power unit in a high and medium pressure cylinder starting mode is provided.
The invention also provides a starting method of the thermal generator set in the high and medium pressure cylinder starting mode.
In order to solve the above technical problem, the present invention provides a starting system for a thermal generator set in a high and medium pressure cylinder starting mode, comprising:
the steam inlet of the high-pressure cylinder is communicated with the superheater and the steam header;
the steam inlet of the intermediate pressure cylinder is communicated with the reheater and the steam header; the steam header is started by steam of an adjacent machine;
and the steam inlet of the low pressure cylinder is communicated with the steam outlet of the medium pressure cylinder, and the steam outlet of the low pressure cylinder is communicated with the condenser of the machine.
As a preferred scheme, a first isolation valve, a first check valve and a first regulating valve are arranged between the steam header and a steam inlet of the high-pressure cylinder; and a second isolating valve, a second check valve and a second regulating valve are arranged between the steam header and the steam inlet of the intermediate pressure cylinder.
Preferably, the method further comprises the following steps:
and the pressure reduction and temperature reduction device is arranged at the upstream of the steam header.
Preferably, a third check valve and a sixth isolation valve are arranged at the inlet end of the pressure and temperature reducing device; and a seventh isolating valve is arranged between the pressure reducing and temperature reducing device and the steam header.
Preferably, a third isolation valve and a third regulating valve are arranged between the superheater and the steam inlet of the high-pressure cylinder.
Preferably, a fourth isolation valve and a fourth regulating valve are arranged between the reheater and the steam inlet of the intermediate pressure cylinder.
As a preferred scheme, the superheater is communicated with a rear pipeline of the high-discharge check valve through a pipeline, and a high bypass valve is arranged between the superheater and the high-discharge check valve;
the reheater passes through the pipeline and communicates with local condenser, just the reheater with be provided with low side valve between the local condenser.
Preferably, the method further comprises the following steps:
the adjacent condenser is communicated with the outlet of the local condenser; and a fifth regulating valve and a fifth isolating valve are arranged between the adjacent condenser and the local condenser.
The invention also provides a starting method of the high and medium pressure cylinder starting mode thermal generator set, which adopts any one of the starting systems of the high and medium pressure cylinder starting mode thermal generator set, and comprises the following steps:
starting a steam header by using an adjacent machine;
the exhaust steam in the steam header enters the high-pressure cylinder to do work, and part of the exhaust steam enters the intermediate pressure cylinder to do work;
the exhaust steam of the intermediate pressure cylinder enters the low pressure cylinder to do work, and the exhaust steam of the low pressure cylinder enters the condenser;
the exhaust steam in the initial starting superheater enters a rear pipeline of the high-exhaust check valve through a high bypass valve; and the exhaust steam in the reheater enters the condenser of the machine through a low-bypass valve.
The technical scheme of the invention has the following advantages:
1. the invention provides a starting system of a thermal generator set in a high and medium pressure cylinder starting mode, which comprises: a high pressure cylinder, an intermediate pressure cylinder and a low pressure cylinder; before this stove steam parameter satisfies the requirement, the steam header is started by the steam that the adjacent machine provided, and the steam turbine starts does not have latency, supplies vapour to high pressure cylinder and low pressure jar simultaneously through the steam header, realizes the joint start of intermediate pressure cylinder and high pressure jar, and then has realized the quick start of unit to promote the flexibility of unit, save the live time, reduce the start-up cost, reduce the emission of pollutant.
2. The starting system of the thermal generator set adopting the high-pressure cylinder and the medium-pressure cylinder starting mode can control the steam header to supply steam to the high-pressure cylinder and the medium-pressure cylinder through the arrangement of the valve group between the steam header and the high-pressure cylinder and the low-pressure cylinder.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a starting system of a thermal generator set in a high and medium pressure cylinder starting mode according to the present invention.
Description of reference numerals:
1. a high pressure cylinder; 2. an intermediate pressure cylinder; 3. a low pressure cylinder; 4. a superheater; 5. a reheater; 6. a steam header; 7. a third isolation valve; 8. a third regulating valve; 9. a first bypass valve; 10. a high bypass valve; 11. a high-discharge check valve; 12. a first regulating valve; 13. a first check valve; 14. a first isolation valve; 15. a second isolation valve; 16. a second check valve; 17. a second regulating valve; 18. a low bypass valve; 19. a third check valve; 20. a sixth isolation valve; 21. a seventh isolation valve; 22. a fifth regulating valve; 23. a fifth isolation valve; 24. a condenser of the machine; 25. an adjacent condenser; 26. a coagulation pump; 27. a local condensed water system; 28. a pressure reducing and temperature reducing device; 29. a fourth isolation valve; 30. a fourth regulating valve; 31. a second bypass valve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
This embodiment provides a starting system of high, 2 starting methods thermal generator set of intermediate pressure cylinder, includes: a high pressure cylinder 1, an intermediate pressure cylinder 2 and a low pressure cylinder 3; the steam inlet of the high pressure cylinder 1 is communicated with the superheater 4 and the steam header 6 through pipelines; the steam inlet of the intermediate pressure cylinder 2 is communicated with the reheater 5 and the steam header 6 through pipelines; the steam header 6 is started by steam of an adjacent machine; the steam inlet of the low pressure cylinder 3 is communicated with the steam outlet of the intermediate pressure cylinder 2, and the steam outlet of the low pressure cylinder 3 is communicated with a condenser 24 of the machine.
Before this stove steam parameter satisfies the requirement, steam header 6 is started by the steam that the adjacent machine provided, supplies vapour to high pressure cylinder 1 and intermediate pressure cylinder 2 simultaneously through steam header 6, realizes the joint start of intermediate pressure cylinder 2 and high pressure cylinder 1, and then has realized the quick start of unit to promote the flexibility of unit, save the live-time, reduce the start-up cost, reduce the emission of pollutant.
As shown in fig. 1, one path of the exhaust steam of the superheater 4 enters a steam inlet of the high-pressure cylinder 1, and the other path of the exhaust steam enters a high-exhaust check valve 11; a third isolating valve 7 and a third regulating valve 8 are arranged on a communicating pipeline of the steam inlets of the superheater 4 and the high-pressure cylinder 1, and a first bypass valve 9 is arranged in parallel with the third regulating valve 8; the steam outlet of the high pressure cylinder 1 is communicated with the back of the high-exhaust check valve 11; a high bypass valve 10 is provided between the superheater 4 and the rear of the high discharge check valve 11.
In the use process, the third isolation valve 7 and the third regulating valve 8 are opened, the steam part of the superheater 4 enters the high-pressure cylinder 1, and the other part of the steam part also enters the high-discharge check valve 11 through the high bypass valve 10.
One path of exhaust steam of the reheater 5 enters the intermediate pressure cylinder 2, and the other path of the exhaust steam enters the condenser 24 of the reheater; a fourth isolation valve 29 and a fourth regulating valve 30 are provided between the reheater 5 and the intermediate cylinder 2, and a second bypass valve 31 is provided in parallel with the fourth regulating valve 30; a low-side valve 18 is provided between the reheater 5 and the local condenser 24.
One path of exhaust steam of the steam header 6 enters the high-pressure cylinder 1 to do work, and the other path of exhaust steam enters the intermediate-pressure cylinder 2 to do work; a first check valve 13, a first isolation valve 14 and a first regulating valve 12 are arranged between the steam header 6 and the high-pressure cylinder 1; a second non-return valve 16, a second isolation valve 15 and a second regulating valve 17 are arranged between the steam header 6 and the intermediate cylinder 2.
The inlet end of the steam header 6 is provided with a pressure and temperature reducing device 28, a seventh isolation valve 21 is arranged between the steam header 6 and the pressure and temperature reducing device 28, and a third check valve 19 and a sixth isolation valve 20 are arranged at the inlet end of the pressure and temperature reducing device 28.
The outlet of the local condenser 24 is communicated with a local condensed water system 27 through a condensate pump 26, the other path is communicated with an adjacent condenser 25, and a fifth regulating valve 22 and a fifth isolating valve 23 are communicated between the adjacent condenser 25 and the condensate pump 26.
Example 2
The embodiment provides a starting method of a thermal generator set in a high and medium pressure cylinder starting mode, which uses the starting system of the thermal generator set in the high and medium pressure cylinder starting mode in the embodiment 1; the method comprises the following steps:
starting a steam header 6 by steam from an adjacent machine;
the exhaust steam in the steam header 6 partially enters the high-pressure cylinder 1 to do work, and partially enters the intermediate pressure cylinder 2 to do work;
the exhaust steam of the intermediate pressure cylinder 2 enters the low pressure cylinder 3 to do work, and the exhaust steam of the low pressure cylinder 3 enters a condenser 24 of the machine;
after the operation is stable, the exhausted steam in the superheater 4 enters the high-pressure cylinder 1; the exhaust steam from the reheater 5 enters the intermediate pressure cylinder 2.
Specifically, before the generator set is started, the third isolation valve 7, the third regulating valve 8, the first bypass valve 9, the fourth isolation valve 29, the fourth regulating valve 30 and the second bypass valve 31 are closed; the boiler is ignited and hot state washing is started.
The steam of the adjacent machine supplies steam to the steam header 6 through a sixth isolation valve 20, a third check valve 19, a temperature and pressure reducing device and a seventh isolation valve 21. After the steam turbine has a run-away condition, opening a first isolation valve 14 and a second isolation valve 15, partially opening a first adjusting valve 12 and a second adjusting valve 17, and performing run-away by adopting a combined starting mode of a high pressure cylinder 1 and a medium pressure cylinder 2 before heating the steam of the steam header 6 to the high pressure cylinder 1 and the medium pressure cylinder 2 to complete the operations of warming up, fixing speed and the like; meanwhile, in the process of the unit turning, the steam pressure after the first regulating valve 12 and the second regulating valve 17 are thrown is automatically controlled, and the steam pressure in front of the high pressure cylinder 1 and the steam pressure in front of the medium pressure cylinder 2 are respectively controlled to meet the requirements.
After the steam quality and parameters of the furnace meet the requirements of a steam turbine, the third isolation valve 7 is opened, the high-pressure cylinder 1 drives steam to switch under the condition that the front steam parameters of the high-pressure cylinder 1 are basically stable by adjusting the first adjusting valve 12, the third adjusting valve 8 and the high side valve 10, the fourth isolation valve 29 is opened at the same time, the high-pressure cylinder 1 drives steam to switch under the condition that the front steam parameters of the intermediate-pressure cylinder 2 are basically stable by operating the second adjusting valve 17, the fourth adjusting valve 30 and the low side valve 18, the high-pressure cylinder 1 and the intermediate-pressure cylinder 2 drive steam to switch under the condition that the front steam parameters of the intermediate-pressure cylinder 2 are basically stable, and finally the third isolation valve 7, the third adjusting valve 8, the fourth isolation valve 29 and the fourth adjusting valve 30 are opened, the first isolation valve 14, the first adjusting valve 12, the second isolation valve 15 and the second adjusting valve 17 are closed, and the steam turbine drives steam to switch to the furnace. Then, in cooperation with the high bypass and the low bypass, the first bypass valve 9 and the second bypass valve 31 are opened to reduce the throttling loss of the main, reheat steam in the normal operation of the unit.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. The utility model provides a high, intermediate pressure cylinder start mode thermal generator set's starting system which characterized in that includes:
the steam inlet of the high-pressure cylinder (1) is communicated with the superheater (4) and the steam header (6);
the steam inlet of the intermediate pressure cylinder (2) is communicated with the reheater (5) and the steam header (6); the steam header (6) is started by steam of an adjacent machine;
and a steam inlet of the low pressure cylinder (3) is communicated with a steam outlet of the intermediate pressure cylinder (2), and a steam outlet of the low pressure cylinder (3) is communicated with a condenser (24) of the machine.
2. The starting system of a high and medium pressure cylinder starting type thermal generator set according to claim 1,
a first isolation valve (14), a first check valve (13) and a first regulating valve (12) are arranged between the steam header (6) and a steam inlet of the high-pressure cylinder (1); and a second isolation valve (15), a second check valve (16) and a second regulating valve (17) are arranged between the steam header (6) and the steam inlet of the intermediate pressure cylinder (2).
3. The system for starting a thermal generator set using a high-and medium-pressure cylinder as set forth in claim 1, further comprising:
a pressure and temperature reducing device (28) disposed upstream of the steam header (6).
4. The starting system of the high and medium pressure cylinder starting type thermal generator set according to claim 3, wherein the inlet end of the pressure reducing and temperature reducing device (28) is provided with a third check valve (19) and a sixth isolation valve (20); and a seventh isolating valve (21) is arranged between the pressure reducing and temperature reducing device (28) and the steam header (6).
5. The starting system of the high and medium pressure cylinder starting mode thermal generator set according to claim 1, characterized in that a third isolation valve (7) and a third regulating valve (8) are arranged between the steam inlet of the superheater (4) and the high pressure cylinder (1).
6. The starting system of the high and medium pressure cylinder starting type thermal generator set according to claim 5, characterized in that a fourth isolation valve (29) and a fourth regulating valve (30) are arranged between the reheater (5) and the steam inlet of the medium pressure cylinder (2).
7. The starting system of the high and medium pressure cylinder starting mode thermal generator set according to claim 6, characterized in that the superheater is communicated with a rear pipeline of a high-discharge check valve through a pipeline, and a high side valve is arranged between the superheater and the high-discharge check valve;
the reheater passes through the pipeline and communicates with local condenser, just the reheater with be provided with low side valve between the local condenser.
8. The system for starting a thermal generator set using a high-and-medium-voltage cylinder as set forth in claim 1, further comprising:
the adjacent condenser (25) is communicated with the outlet of the local condenser (24); and a fifth regulating valve (22) and a fifth isolating valve (23) are arranged between the adjacent condenser (25) and the local condenser (24).
9. A starting method of a thermal generator set starting by a high and medium pressure cylinder, characterized in that the starting system of the thermal generator set starting by the high and medium pressure cylinder according to any one of claims 1 to 8 is adopted, and comprises the following steps:
starting a steam header (6) by steam from an adjacent machine;
the exhaust steam in the steam header (6) partially enters the high-pressure cylinder (1) to do work, and partially enters the intermediate pressure cylinder (2) to do work;
the exhaust steam of the intermediate pressure cylinder (2) enters the low pressure cylinder (3) to do work, and the exhaust steam of the low pressure cylinder (3) enters a condenser (24) of the machine;
the steam exhaust part in the superheater (4) enters the high-pressure cylinder (1), and the steam exhaust part enters a rear pipeline of a high-exhaust check valve (11) through a high-side valve (10); the exhaust steam in the reheater (5) partially enters the intermediate pressure cylinder (2), and partially enters the local condenser (24) through the low side valve (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210680943.8A CN114941553A (en) | 2022-06-15 | 2022-06-15 | Starting system and method for thermal generator set in high and medium pressure cylinder starting mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210680943.8A CN114941553A (en) | 2022-06-15 | 2022-06-15 | Starting system and method for thermal generator set in high and medium pressure cylinder starting mode |
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| CN202210680943.8A Pending CN114941553A (en) | 2022-06-15 | 2022-06-15 | Starting system and method for thermal generator set in high and medium pressure cylinder starting mode |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207145026U (en) * | 2017-07-14 | 2018-03-27 | 上海电气电站设备有限公司 | Combined Cycle Unit steam turbine quickly starts warming-up system |
| CN112814752A (en) * | 2021-01-08 | 2021-05-18 | 西安热工研究院有限公司 | Rapid starting system and method for thermal generator set in medium pressure cylinder starting mode |
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2022
- 2022-06-15 CN CN202210680943.8A patent/CN114941553A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207145026U (en) * | 2017-07-14 | 2018-03-27 | 上海电气电站设备有限公司 | Combined Cycle Unit steam turbine quickly starts warming-up system |
| CN112814752A (en) * | 2021-01-08 | 2021-05-18 | 西安热工研究院有限公司 | Rapid starting system and method for thermal generator set in medium pressure cylinder starting mode |
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