CN210345016U - Flexible heat supply system of thermal power plant - Google Patents
Flexible heat supply system of thermal power plant Download PDFInfo
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- CN210345016U CN210345016U CN201921121931.1U CN201921121931U CN210345016U CN 210345016 U CN210345016 U CN 210345016U CN 201921121931 U CN201921121931 U CN 201921121931U CN 210345016 U CN210345016 U CN 210345016U
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- heat supply
- steam
- thermal power
- power plant
- heating
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Abstract
The utility model provides a nimble heating system of thermal power plant, includes the female pipe of heat supply to and parallelly connected the heat supply branch pipe on the female pipe of heat supply, the heat supply branch pipe is connected to the cold section of reheat steam of this branch road unit, as improving, and heat supply branch pipe connection is to the heating pipeline of adjacent unit, and further heat supply branch pipe can also be connected to this branch road little steam turbine high pressure steam source pipeline, and the female pipe of heat supply can also be connected to the auxiliary steam header pipeline of this system. The heating steam can be conveyed to the adjacent machine according to the requirement. Or the heat supply steam is used as a steam source of the small steam turbine set, and the heat supply steam can be conveyed to the auxiliary steam union to be used as a standby steam source. The utility model discloses a technical scheme after the improvement improves the flexibility of system operation, strengthens thermal power plant equipment operational reliability.
Description
Technical Field
The utility model relates to a heating system of thermal power plant especially relates to a flexible heating system of thermal power plant who optimizes the intercommunication with heat supply steam and rather than the same steam conduit of pressure rating.
Background
The main task of the thermal power plant is to generate electricity by using steam of coal, in the electricity generation, steam extraction of reheat steam of a unit is a good heat supply resource, along with the technical progress and the increasing material requirements of people, the gas supply capacity is improved, and the excavation of steam supply of the thermal power plant is an important link.
At present, most thermal power plants only design and arrange the heating system when carrying out heat supply transformation, do not carry out the overall planning from the angle of whole thermal power plant system operation optimization and consider, lead to the heating system after putting into operation, increased the complexity that the system arranged on the contrary, reduced the reliability of system operation. Through heat supply transformation, the operation of a thermal power system is not influenced, mutual promotion can be realized, the reliability of the system is improved, energy is saved, and the method is a very significant subject.
Original system, the direct trunk in mother's pipe after heat supply steam takes out from the reheat steam cold junction of each unit, and the heat supply mother directly carries heat supply steam to the heating plant.
There has not been the literature to disclose the research and the application to the overall arrangement mode of adaptability and flexibility in the thermal power plant transformation, the utility model discloses accumulate the mode of a set of effective simple connecting line in a large amount of practices.
Disclosure of Invention
For the flexibility that improves the system operation, reinforcing thermal power plant equipment operational reliability, the utility model discloses to heat supply steam and optimize the transformation rather than the same of pressure level the same, link to each other heat supply steam and the steam system of same level, provide a nimble heating system, form the pipeline connected system who stands by each other.
The utility model provides a nimble heating system of thermal power plant, includes the female pipe of heat supply to and parallelly connected the heat supply branch pipe on the female pipe of heat supply, the heat supply branch pipe is connected to the cold section of reheat steam of this branch road unit, and the heat supply branch pipe is connected to the heating pipeline of adjacent unit.
Furthermore, the heat supply branch pipe is connected to the high-pressure steam source pipeline of the branch small steam turbine.
Further, the heat supply main pipe is connected to an auxiliary steam header pipeline of the system.
Preferably, the heating pipeline of the heating branch pipe connected to the adjacent unit is provided with a valve. The valve is an electric stop valve.
Preferably, the valve is arranged on the pipeline of the heat supply branch pipe connected to the high-pressure steam source of the branch small steam turbine. Preferably, the pipeline of the auxiliary steam header connected to the system of the heat supply main pipe is provided with a valve. Preferably, the valves at both locations are electrically operated shut-off valves and regulating valves.
The heating pipelines of the adjacent machines in the plant area are improved, the heat supply main pipe is used as the heating main pipe of the adjacent machine, and the heat supply main pipe is respectively connected with the pipelines to the heating pipelines of the adjacent machines, so that the time for draining and warming the adjacent machines in the heating pipelines is shortened.
The high-pressure steam source of the small steam turbine is improved, the heat supply pipeline is used as the high-pressure steam source of the small turbine and is respectively connected to the high-pressure steam source pipeline of each small turbine, and the heat supply steam is used as the high-pressure steam source of the small steam turbine, so that the method is more stable and reliable.
And a standby steam source of the auxiliary steam header is transformed, and the heat supply steam is used as the standby steam source of the auxiliary steam header, so that the reliability of the system is improved.
During the in-service use, if a certain machine needs adjacent quick-witted heating steam, as long as open heat supply steam and supply vapour electronic stop valve and governing valve to this unit, carry heat supply steam to adjacent machine, just can shorten the heating coil time of draining, can not produce the influence to adjacent quick-witted system operation yet.
If a certain unit needs to provide a high-pressure steam source of the small steam turbine unit, only the electric valve and the regulating valve for supplying steam to the small steam turbine unit are needed to be opened, and the steam of the unit is used as the air source of the small steam turbine unit, so that the operation of the reheated steam of the unit is not influenced.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention
FIG. 2 is a schematic diagram of the system prior to retrofitting
Wherein 1 is the heat supply female pipe, 2 is the heat supply branch pipe, 3 is the auxiliary steam header pipeline, 211 is the quick-witted reheat steam cooling section of the first number, 221 is the quick-witted high pressure gas source pipeline of No. 1 little steam turbine, 212 is the quick-witted reheat steam cooling section of the second number, 222 is the quick-witted high pressure gas source pipeline of No. 2 little steam turbine, 213 is the quick-witted reheat steam cooling section of the third number, 223 is the quick-witted high pressure gas source pipeline of No. 3 little steam turbine, 41, 42, 43 are adjacent quick-witted heating pipeline.
Has the advantages that:
1. the main heat supply pipe and the branch pipes are used as steam supply pipelines of an adjacent machine heating device, a small machine high-pressure steam source and an auxiliary steam header standby steam source, heat supply steam is connected with pipelines with the same pressure, and flexibility of system arrangement is improved.
2. The transformation difficulty is small in the original system, and the construction is fast.
3. The added heat supply system is equivalent to a set of high-pressure steam source system for long-term heat standby added to a thermal power plant, and the reliability of the system can be obviously improved in actual operation.
Detailed Description
The utility model provides a nimble heating system of thermal power plant, includes the heat supply main pipe 1 to and parallelly connected heat supply branch pipe 2 on the heat supply main pipe 1, heat supply branch pipe 2 is connected to this branch road unit's reheat steam cold end 211, 212, 213, and heat supply branch pipe 2 is connected to the heating pipeline 41 of adjacent unit, 42, 43, has electronic stop valve on the pipeline. The heat supply branch pipe 2 is connected to high-pressure steam source pipelines 221, 222 and 223 of the small steam turbine of the branch, and electric stop valves and regulating valves are arranged on the pipelines. The heat supply main pipe 1 is connected to an auxiliary steam header pipeline 3 of the system, and an electric stop valve and an adjusting valve are arranged on the pipeline.
During the actual use, if the branch road unit need provide heating steam for the adjacent plane, as long as open the heat supply steam and supply vapour electric check valve to this unit, carry heat supply steam to the adjacent plane. The branch unit needs to provide a high-pressure steam source for the small steam turbine unit, only needs to open the steam supply electric valve and the steam adjusting valve for supplying heat steam to the small steam turbine unit, uses the heat supply steam as the steam source of the small steam turbine unit, and does not influence the operation of the reheated steam of the small steam turbine unit. Meanwhile, the heat supply steam can also be conveyed to the auxiliary steam header through an electric stop valve and an adjusting valve to serve as a standby steam source.
Claims (8)
1. The utility model provides a nimble heating system of thermal power plant, includes the female pipe of heat supply to and parallelly connected the heat supply branch pipe on the female pipe of heat supply, the heat supply branch pipe is connected to the cold section of reheat steam of this branch road unit, its characterized in that, the heat supply branch pipe be connected to the heating pipeline of adjacent unit.
2. The flexible thermal power plant heating system of claim 1, wherein said heating branch is connected to said branch of small turbine high pressure steam source pipeline.
3. The flexible thermal power plant heating system of claim 1, wherein said main heating pipe is connected to an auxiliary steam header piping of the system.
4. The flexible thermal power plant heating system of claim 1, wherein the heating manifold is valved to the heating lines of adjacent units.
5. The flexible thermal power plant heating system of claim 2, wherein the branch heating line is valved to the high pressure steam supply line of the branch steam turbine.
6. The flexible thermal power plant heating system of claim 3, wherein the main heating pipe is valved to the auxiliary steam header piping of the system.
7. The flexible thermal power plant heating system as in claim 4, wherein said valve is an electrically actuated shutoff valve.
8. The flexible thermal power plant heating system as claimed in claim 5 or 6, wherein said valves are electrically operated stop valves and regulating valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921121931.1U CN210345016U (en) | 2019-07-17 | 2019-07-17 | Flexible heat supply system of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921121931.1U CN210345016U (en) | 2019-07-17 | 2019-07-17 | Flexible heat supply system of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210345016U true CN210345016U (en) | 2020-04-17 |
Family
ID=70197380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921121931.1U Expired - Fee Related CN210345016U (en) | 2019-07-17 | 2019-07-17 | Flexible heat supply system of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210345016U (en) |
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2019
- 2019-07-17 CN CN201921121931.1U patent/CN210345016U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200417 Termination date: 20210717 |
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| CF01 | Termination of patent right due to non-payment of annual fee |