CN212431456U - Open cooling water system of high-backpressure circulating water heat supply unit - Google Patents
Open cooling water system of high-backpressure circulating water heat supply unit Download PDFInfo
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- CN212431456U CN212431456U CN202020945989.4U CN202020945989U CN212431456U CN 212431456 U CN212431456 U CN 212431456U CN 202020945989 U CN202020945989 U CN 202020945989U CN 212431456 U CN212431456 U CN 212431456U
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- open cooling
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- 239000000498 cooling water Substances 0.000 title claims abstract description 139
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000002955 isolation Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims 2
- 230000009466 transformation Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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Abstract
The utility model relates to a high back pressure circulating water heat supply unit open cooling water system. At present, after a pure condensing turbine unit of a power plant is subjected to double-rotor high-back-pressure circulating water heat supply transformation, because a circulating water pump and a cooling tower of the transformation unit are stopped in a heat supply period, open cooling water of the unit loses a water supply source. The utility model provides a high back pressure circulating water heat supply unit open cooling water system which constitutes and includes: unit circulating water supply pipe (1) and unit circulating water return water pipe (2), unit circulating water supply pipe is connected with open cooling water supply pipe of unit (3), unit circulating water return water pipe is connected with open cooling water return water pipe of unit (4), open cooling water supply pipe of unit and adjacent unit supply this unit to open cooling water pipe of group (15) to be connected, adjacent unit supplies this unit to open cooling water pipe of unit and is connected with adjacent unit circulating water supply pipe (5). The utility model discloses be applied to straight condensing turbine unit.
Description
The technical field is as follows:
the utility model relates to a high back pressure circulating water heat supply unit open cooling water system.
Background art:
at present, after a straight condensing steam turbine unit of a power plant is subjected to double-rotor high-back-pressure circulating water heat supply transformation, because a circulating water pump and a cooling tower of the transformation unit are stopped and used in a heat supply period, open cooling water of the unit loses a water supply source, the water is taken from a circulating water supply pipeline of an adjacent unit by the common scheme at present, and the return water is discharged to the cooling tower of the adjacent unit, so that the defect that the reliability of an open cooling water system is influenced if the adjacent unit is stopped or stopped for maintenance is caused, and the safety and stability of the.
The invention content is as follows:
the utility model aims at providing a high back pressure circulating water heat supply unit open cooling water system realizes open cooling water system's multiple operation mode and switches, improves open cooling water system reliability, guarantees unit safety and stability heat supply.
The above purpose is realized by the following technical scheme:
open cooling water system of high back pressure circulating water heat supply unit, its constitution includes: a machine set circulating water supply pipeline and a machine set circulating water return pipeline, wherein the machine set circulating water supply pipeline is connected with the machine set open type cooling water supply pipeline, the unit circulating water return pipeline is connected with the unit open cooling water return pipeline, the unit open cooling water supply pipeline is connected with the adjacent unit power supply unit open cooling water pipeline, the adjacent unit open type cooling water pipeline is connected with the adjacent unit circulating water supply pipeline, the unit open cooling water return pipeline is connected with a pipeline for returning the unit open cooling water to the adjacent unit cooling tower, the unit open cooling water backwater is connected with the cooling tower to an adjacent unit cooling tower pipeline, the adjacent unit supplies the unit open cooling water pipeline to be connected with one end of a standby open cooling water pump, and the other end of the standby open cooling water pump is connected with a front pool of a circulating water pump of the adjacent unit.
The high-backpressure circulating water heat supply unit open cooling water system is characterized in that a unit circulating water supply and open cooling water supply isolation valve is installed on a unit open cooling water supply pipeline, a unit open cooling water return isolation valve to the circulating water return isolation valve is installed on a unit open cooling water return pipeline, and a unit open cooling water return isolation valve to an adjacent unit cooling tower pipeline is installed on a unit open cooling water return isolation valve to the adjacent unit cooling tower pipeline.
The high back pressure circulating water heat supply unit open cooling water system, adjacent unit supply this unit open cooling water piping on be connected with reserve open cooling water pump entry isolating valve, reserve open cooling water pump export check valve, reserve open cooling water pump export isolating valve, adjacent unit supply this unit open cooling water isolating valve and adjacent unit supply this unit open cooling water check valve.
The high back pressure circulating water heat supply unit open cooling water system, adjacent unit supply unit open cooling water pipeline with adjacent unit circulating water supply pipe between install adjacent unit circulating water supply and supply unit open cooling water isolation valve and adjacent unit circulating water supply and supply unit open cooling water check valve.
The utility model has the advantages that:
1. the utility model discloses a pure steam turbine set that condenses of power plant carries out birotor high back pressure circulating water heat supply and reforms transform the back, unit circulating water pump in the heat supply phase, the cooling tower stops using, supply female pipe and adjacent unit circulating water supply pipe with unit open cooling water, through the contact pipeline, the valve is connected, and newly add a reserve open cooling water pump, pump inlet pipe is from adjacent unit circulating water pump forebay water intaking, pump outlet pipe is connected to unit open cooling water supply female pipe, unit open cooling water return female pipe connects to adjacent unit cooling tower through newly adding the pipeline, through control flap, realize multiple operation mode and switch, guarantee unit open cooling water system reliable operation.
The utility model discloses at equipment such as open cooling water system design installation water supply return pipe, valve, pump of unit, increase reserve water source all the way, newly add a reserve open cooling water pump promptly, pump inlet pipe from adjacent unit circulating water pump forebay water intaking, the return water is arranged to adjacent unit cooling tower, improves open cooling water system reliability, guarantees unit safety and stability and supplies heat.
The utility model discloses former system layout, unit are when pure operating mode operation, and circulating water pump, cooling tower all put into operation, and the circulating water supplies water and supplies open cooling water to supply water, open cooling water return water to circulating water return water, satisfies open cooling water system operation. After the unit is transformed, the unit circulating water pump and the cooling tower are stopped in the heat supply period, the open cooling water is supplied to water and is taken from the adjacent unit circulating water supply pipeline, one standby water source is added, namely, a standby open cooling water pump is added, and the pump inlet pipe is used for taking water from the front pool of the adjacent unit circulating water pump; and the open cooling water return main pipe is connected to the adjacent unit cooling tower through a newly added pipeline, and return water is discharged to the adjacent unit cooling tower. When the unit is transformed, the open cooling water system is optimally designed and arranged, a pipeline, a valve and a pump are additionally arranged at a proper position, and a newly-added pipeline and equipment are in butt joint and interconnection with an original system. By the matching of the opening and closing of the valve and the starting and stopping of the standby pump, the reliable water supply of a water source is ensured, and the switching of various operation modes of the open cooling water system is realized.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the system comprises a unit circulating water supply pipeline, a unit circulating water return pipeline 2, a unit open cooling water supply pipeline 3, a unit open cooling water return pipeline 4, a unit open cooling water return pipeline 5, an adjacent unit circulating water supply pipeline 6, and an adjacent unit circulating water supply unit open cooling water isolation valve. 7. The adjacent unit circulating water supplies water and supplies unit open cooling water check valve, 8, adjacent unit circulating water pump forebay, 9, reserve open cooling water pump entry isolating valve, 10, reserve open cooling water pump, 11, reserve open cooling water pump exit check valve, 12, reserve open cooling water pump exit isolating valve, 13, adjacent unit supplies unit open cooling water isolating valve, 14, adjacent unit supplies unit open cooling water check valve, 15, adjacent unit supplies unit open cooling water pipeline, 16, unit circulating water supplies water and supplies open cooling water supply isolating valve, 17, unit open cooling water return to circulating water return isolating valve, 18, unit open cooling water return to adjacent unit cooling tower isolating valve, 19, unit open cooling water return to adjacent unit cooling tower pipeline, 20, cooling tower.
The specific implementation mode is as follows:
example 1:
the utility model provides a high back pressure circulating water heat supply unit open cooling water system which constitutes and includes: a machine set circulating water supply pipeline 1 and a machine set circulating water return pipeline 2, wherein the machine set circulating water supply pipeline 1 is connected with a machine set open type cooling water supply pipeline 3, the unit circulating water return pipeline 2 is connected with the unit open type cooling water return pipeline 4, the unit open type cooling water supply pipeline 3 is connected with the adjacent unit open type cooling water pipeline 15, the open type cooling water pipeline 15 of the adjacent unit supply unit is connected with the circulating water supply pipeline 5 of the adjacent unit, the unit open cooling water return pipeline 4 is connected with a pipeline 19 for returning the unit open cooling water to the adjacent unit cooling tower, the unit open type cooling water is returned to the pipeline 19 of the adjacent unit cooling tower and is connected with the cooling tower 20, the adjacent units are connected with one end of a standby open cooling water pump 10 through an open cooling water pipeline 15 of the unit, the other end of the standby open cooling water pump 10 is connected with the front pool 8 of the circulating water pump of the adjacent unit.
Example 2:
according to the open cooling water system of the high back pressure circulating water heat supply unit in embodiment 1, the unit open cooling water supply pipeline 3 is provided with the unit circulating water supply open cooling water supply isolation valve 16, the unit open cooling water return pipeline 4 is provided with the unit open cooling water return isolation valve 17, and the unit open cooling water return pipeline 19 is provided with the unit open cooling water return isolation valve 18.
Example 3:
according to embodiment 1 or 2, the open cooling water system of high back pressure circulating water heat supply unit, adjacent unit supply unit open cooling water pipe 15 on be connected with reserve open cooling water pump entry isolating valve 9, reserve open cooling water pump export check valve 11, reserve open cooling water pump export isolating valve 12, adjacent unit supply unit open cooling water isolating valve 13 and adjacent unit supply unit open cooling water check valve 14.
Example 4:
according to the open cooling water system of high back pressure circulating water heat supply unit in embodiment 1 or 2 or 3, the adjacent unit circulating water supply unit open cooling water isolation valve 6 and the adjacent unit circulating water supply unit open cooling water check valve 7 are installed between the adjacent unit supply unit open cooling water pipeline 15 and the adjacent unit circulating water supply pipeline 5.
Claims (4)
1. The utility model provides a high back pressure circulating water heat supply unit open cooling water system which constitutes and includes: unit circulating water supply pipe and unit circulating water return water pipeline, characterized by: the unit circulating water supply pipe and the open cooling water supply pipe of unit be connected, unit circulating water return water pipe and the open cooling water return water pipe of unit be connected, the open cooling water supply pipe of unit supply the open cooling water piping of unit with adjacent unit to be connected, adjacent unit supply the open cooling water piping of unit to be connected with adjacent unit circulating water supply pipe, the open cooling water return water pipe of unit and the open cooling water return water of unit to adjacent unit cooling tower pipe connection, the open cooling water return water of unit to be connected with adjacent unit cooling tower pipeline, adjacent unit supply the open cooling water piping of unit to be connected with reserve open cooling water pump's one end, reserve open cooling water pump's the other end and adjacent unit circulating water pump forebay be connected.
2. The open cooling water system of high back pressure circulating water heating unit of claim 1, characterized in that: the unit open type cooling water supply pipeline is provided with a unit circulating water supply open type cooling water supply isolation valve, the unit open type cooling water return pipeline is provided with a unit open type cooling water return isolation valve, the unit open type cooling water return isolation valve returns water to the circulating water return isolation valve, and the unit open type cooling water return isolation valve returns water to the adjacent unit cooling tower pipeline and is provided with a unit open type cooling water return isolation valve.
3. The open cooling water system of high back pressure circulating water heating unit of claim 2, characterized in that: and the adjacent unit supply unit open type cooling water pipeline is connected with a standby open type cooling water pump inlet isolating valve, a standby open type cooling water pump outlet check valve, a standby open type cooling water pump outlet isolating valve, an adjacent unit supply unit open type cooling water isolating valve and an adjacent unit supply unit open type cooling water check valve.
4. The open cooling water system of claim 3, wherein: and an open cooling water isolation valve of the adjacent unit circulating water supply and supply unit and an open cooling water check valve of the adjacent unit circulating water supply and supply unit are arranged between the adjacent unit supply unit open cooling water pipeline and the adjacent unit circulating water supply pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020945989.4U CN212431456U (en) | 2020-05-29 | 2020-05-29 | Open cooling water system of high-backpressure circulating water heat supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020945989.4U CN212431456U (en) | 2020-05-29 | 2020-05-29 | Open cooling water system of high-backpressure circulating water heat supply unit |
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| Publication Number | Publication Date |
|---|---|
| CN212431456U true CN212431456U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020945989.4U Expired - Fee Related CN212431456U (en) | 2020-05-29 | 2020-05-29 | Open cooling water system of high-backpressure circulating water heat supply unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433978A (en) * | 2021-07-01 | 2021-09-24 | 华能国际电力股份有限公司上安电厂 | Unit water supply control system optimization method |
-
2020
- 2020-05-29 CN CN202020945989.4U patent/CN212431456U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433978A (en) * | 2021-07-01 | 2021-09-24 | 华能国际电力股份有限公司上安电厂 | Unit water supply control system optimization method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210129 |