CN218820336U - Thermal power plant unit gets and is close quick-witted circulating water structure - Google Patents
Thermal power plant unit gets and is close quick-witted circulating water structure Download PDFInfo
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- CN218820336U CN218820336U CN202220733869.7U CN202220733869U CN218820336U CN 218820336 U CN218820336 U CN 218820336U CN 202220733869 U CN202220733869 U CN 202220733869U CN 218820336 U CN218820336 U CN 218820336U
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Abstract
The utility model discloses a thermal power plant unit gets and is close quick-witted circulating water structure relates to thermal power plant boiler circulating water field, including a unit circulating water pump, a unit circulating water reserve pump, no. two unit circulating water reserve pumps, no. two unit circulating water pump two-position three way solenoid valve of unit circulating water pump connects No. two unit circulating water pump export female pipe, be connected with adjacent unit circulating water communicating pipe between a unit circulating water pump export female pipe and No. two unit circulating water pump export female pipe, adjacent unit circulating water communicating pipe is connected with No. two unit electric butterfly valves on one side of being close to No. two unit circulating water pump export female pipe, and is connected with a unit electric butterfly valve at the opposite side, a unit circulating water reserve pump and No. two unit circulating water reserve pump all connect between a unit electric butterfly valve and No. two unit electric butterfly valves of adjacent unit circulating water. The utility model discloses avoid the unit to shut down, the safety and stability of guarantee unit moves.
Description
Technical Field
The utility model relates to a boiler circulating water field of thermal power plant specifically is a unit of thermal power plant gets and is had an organic circulating water structure.
Background
Steam generated by a boiler of a power plant of the thermal power plant enters a steam turbine to do work, the steam turbine is pushed to rotate, the steam which does work is discharged into a condenser, circulating water of the power plant of the thermal power plant has two functions, one function is to cool the steam which does work and condense the steam into water; the other function is to cool closed cooling water of the thermal power plant unit, if the circulating water is interrupted due to failure, steam in the condenser cannot be condensed into water, the thermal power plant unit cannot normally operate and can only be forced to stop; and after the circulating water is interrupted, the temperature of closed cooling water can be quickly raised, the temperature of lubricating oil of a plurality of devices can be quickly raised due to the loss of the temperature of the cooling water, the temperature of hydrogen of a generator can also be quickly raised, and the accident of equipment overheating and damage is easily caused, so that the safety and the reliability of the circulating water of the thermal power plant are very important for the thermal power plant.
The single unit of current thermal power plant all adopts two circulating water pump to supply water, and during normal condition, one operation is one for standby, if one circulating water pump breaks down and needs the maintenance, circulating water pump just does not have the standby pump, and the fail safe nature of circulating water supply will receive serious threat.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a thermal power plant unit gets and is close quick-witted circulating water structure to if there is a circulating water pump to break down needs the maintenance to solve current thermal power plant single unit, circulating water pump just does not have the stand-by pump, and the fail safe nature of circulating water supply will receive the technical problem of serious threat.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a thermal power plant unit gets machine circulating water structure that faces, includes a unit circulating water pump, a unit circulating water reserve pump, no. two unit circulating water pumps, no. two unit circulating water reserve pumps, a unit circulating water pump and a unit circulating water reserve pump all are connected with a unit circulating water pump two-position three way solenoid valve, a unit circulating water pump two-position three way solenoid valve connects a unit circulating water pump outlet female pipe, no. two unit circulating water pump and No. two unit circulating water reserve pump all are connected with No. two unit circulating water pump two-position three way solenoid valve, no. two unit circulating water pump two-position three way solenoid valve connection two unit circulating water pump outlet female pipes, be connected with adjacent unit circulating water communicating pipe between a unit circulating water female pipe and No. two unit circulating water pump outlet female pipes, adjacent unit circulating water is being connected with No. two unit electric butterfly valve near two unit circulating water pump outlet female pipe one side, and is connected with a unit electric butterfly valve at the opposite side.
By adopting the technical scheme, the unit is prevented from being shut down, and the safe and stable operation of the unit is ensured.
The utility model discloses further set up to, a unit circulating water pump export female union coupling has a unit condenser and a unit to close the cold ware.
Through adopting above-mentioned technical scheme, the hydrologic cycle of a unit is participated in with a unit closed cooler to a unit condenser.
The utility model discloses further set up to, no. two unit circulating water pump export female union couplings are connected with No. two unit condensers and No. two unit closed coolers.
Through adopting above-mentioned technical scheme, no. two units condenser and No. two units closed cooler participate in the hydrologic cycle of No. two units.
The utility model discloses further set up to, adjacent unit circulating water communicating pipe and a unit circulating water pump two-position three way solenoid valve are connected to the one end of a unit circulating water standby pump.
Through adopting above-mentioned technical scheme, through No. one unit circulating water pump two-position three way solenoid valve control No. one unit circulating water pump and No. one unit circulating water standby pump to No. one unit circulating water pump outlet mother pipe.
The utility model discloses further set up to, adjacent unit circulating water communicating pipe and No. two unit circulating water two-position three way solenoid valve are connected to the one end of No. two unit circulating water standby pumps.
Through adopting above-mentioned technical scheme, through No. two unit circulating water pump two-position three way solenoid valve control No. two unit circulating water pump and No. two unit circulating water standby pump to No. two unit circulating water pump outlet main pipe.
The utility model discloses further set up to, a unit circulating water pump outlet female pipe is connected to one side of a unit electric butterfly valve, and adjacent unit circulating water communicating pipe is connected to the opposite side.
Through adopting above-mentioned technical scheme, control an unit electric butterfly valve and open and can control No. two units circulating water standby pump to a unit circulating water pump outlet mother pipe pump water.
The utility model discloses further set up to, no. two unit circulating water pump export female pipes are connected to one side of No. two unit electric butterfly valve, and adjacent unit circulating water communicating pipe is connected to the opposite side.
Through adopting above-mentioned technical scheme, control No. two units electric butterfly valve and open and to control a unit circulating water reserve pump and to the female pipe pump water of No. two units circulating water pump export.
To sum up, the utility model discloses mainly have following beneficial effect:
the utility model discloses an add an electrically operated gate between the female pipe of circulating water pump outlet of adjacent generating set of thermal power plant, when having arbitrary one unit to take place the condition that main circulating water pump and reserve circulating water pump all can't move in adjacent unit, just can start the reserve circulating water pump of another unit, open the electrically operated gate, let the circulating water of circulating water interrupt unit resume the supply to avoid the unit to shut down, the safety and stability of guarantee unit moves.
Drawings
FIG. 1 is a diagram of a circulating water system of adjacent units of a boiler in a thermal power plant;
figure 2 is the circulating water system diagram of the utility model.
In the figure: 1. an outlet main pipe of a first unit circulating water pump; 2. the second unit circulating water pump outlet main pipe; 3. a first unit circulating water pump; 4. a first unit circulating water standby pump; 5. a second unit circulating water pump; 6. a second unit circulating water standby pump; 7. a two-position three-way electromagnetic valve of a circulating water pump of the first unit; 8. a two-position three-way electromagnetic valve of a circulating water pump of the second unit; 9. the adjacent unit circulating water communicating pipe; 10. a first set of electric butterfly valves; 11. a second unit electric butterfly valve; 12. a first unit condenser; 13. the first unit is cold closed; 14. a second unit condenser; 15. no. two units close the cold ware.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
Next, an embodiment of the present invention will be described with reference to the overall structure thereof.
A thermal power plant unit machine-taking near-machine circulating water structure is shown in figures 1-2 and comprises a first unit circulating water pump 3, a first unit circulating water standby pump 4, a second unit circulating water pump 5 and a second unit circulating water standby pump 6, wherein the first unit circulating water pump 3 and the first unit circulating water standby pump 4 are connected with a first unit circulating water pump two-position three-way electromagnetic valve 7, the first unit circulating water pump two-position three-way electromagnetic valve 7 is connected with a first unit circulating water pump outlet main pipe 1, the second unit circulating water pump 5 and the second unit circulating water standby pump 6 are connected with a second unit circulating water pump two-position three-way electromagnetic valve 8, the second unit circulating water pump two-position three-way electromagnetic valve 8 is connected with a second unit circulating water pump outlet main pipe 2, adjacent unit circulating water communicating pipe 9 is connected between female pipe 1 of a unit circulating water pump export and the female pipe 2 of No. two unit circulating water pump exports, adjacent unit circulating water communicating pipe 9 is being close to female pipe 2 one side of No. two unit circulating water pump exports and is connected with No. two unit electric butterfly valve 11, and be connected with a unit electric butterfly valve 10 at the opposite side, when there is arbitrary one unit to take place circulating water pump and the condition that the circulating water reserve pump all can't move in adjacent unit and No. two units, start the circulating water reserve pump of another unit, open the electric butterfly valve of unable operation unit one side simultaneously, the circulating water reserve pump of another unit lets the unit circulating water recovery supply of circulating water interrupt through adjacent unit circulating water communicating pipe 9, thereby avoid the unit to shut down, ensure the safe and stable operation of unit.
Referring to fig. 2, one end of a first unit circulating water backup pump 4 is connected to a circulating water communication pipe 9 of an adjacent unit and a two-position three-way solenoid valve 7 of the first unit circulating water pump, one end of a second unit circulating water backup pump 6 is connected to the circulating water communication pipe 9 of the adjacent unit and the two-position three-way solenoid valve 8 of the second unit circulating water pump, one end of the second unit circulating water backup pump is connected to the circulating water communication pipe 9 of the adjacent unit and the two-position three-way solenoid valve 8 of the second unit circulating water pump, the second unit circulating water backup pump 5 and the second unit circulating water backup pump 6 are controlled to a circulating water outlet mother pipe 2 of the second unit by the two-position three-way solenoid valve 8 of the second unit circulating water pump, one side of a first unit electric butterfly valve 10 is connected to the circulating water mother pipe 1 of the first unit, the other side of the second unit electric butterfly valve 11 is connected to the circulating water backup pipe 9 of the adjacent unit, the circulating water backup pump 6 of the second unit is controlled to pump outlet mother pipe 1, and the circulating water backup pump is controlled to pump outlet mother pipe 11 is controlled by the circulating water communication pipe 9 of the second unit.
Referring to fig. 1 and 2, a first-unit circulating water pump outlet header pipe 1 is connected with a first-unit condenser 12 and a first-unit cold trap 13, the first-unit condenser 12 and the first-unit cold trap 13 participate in water circulation of the first unit, a second-unit circulating water pump outlet header pipe 2 is connected with a second-unit condenser 14 and a second-unit cold trap 15, and the second-unit condenser 14 and the second-unit cold trap 15 participate in water circulation of the second unit.
The utility model discloses a theory of operation does: when any one of the adjacent first unit and the second unit has the condition that the circulating water pump and the circulating water standby pump cannot operate, the circulating water standby pump of the other unit is started, and meanwhile, the electric butterfly valve on one side of the unit which cannot operate is started, and the circulating water standby pump of the other unit enables the circulating water of the unit, which is interrupted by circulating water, to be recovered and supplied through the circulating water communicating pipe 9 of the adjacent unit, so that the unit is prevented from being shut down, and the safe and stable operation of the unit is guaranteed.
While embodiments of the invention have been illustrated and described, it is not intended to limit the invention to the exact construction and operation illustrated and described, and that various other features, structures, materials, or characteristics may be substituted for those illustrated and described without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a thermal power plant unit gets and is close quick-witted circulating water structure, includes a unit circulating water pump (3), a unit circulating water reserve pump (4), no. two unit circulating water pump (5), no. two unit circulating water reserve pump (6), its characterized in that: a unit circulating water pump (3) and a unit circulating water reserve pump (4) all are connected with a unit circulating water pump two-position three way solenoid valve (7), a unit circulating water pump two-position three way solenoid valve (7) is connected a unit circulating water pump outlet female pipe (1), no. two unit circulating water pump (5) and No. two unit circulating water reserve pump (6) all are connected with No. two unit circulating water pump two-position three way solenoid valve (8), no. two unit circulating water pump two-position three way solenoid valve (8) are connected No. two unit circulating water pump outlet female pipe (2), be connected with adjacent unit circulating water communicating pipe (9) between a unit circulating water pump outlet female pipe (1) and No. two unit circulating water pump outlet female pipe (2), adjacent unit circulating water communicating pipe (9) are being connected with No. two unit electric butterfly valve (11) on one side of being close to No. two unit circulating water female pipe (2), and are connected with a unit electric butterfly valve (10) on the opposite side.
2. The thermal power plant unit machine-approaching circulating water taking structure as claimed in claim 1, wherein: the first unit circulating water pump outlet main pipe (1) is connected with a first unit condenser (12) and a first unit closed cooler (13).
3. The thermal power plant unit machine-approaching circulating water taking structure as claimed in claim 1, wherein: and the second unit circulating water pump outlet main pipe (2) is connected with a second unit condenser (14) and a second unit cold-stop device (15).
4. The thermal power plant unit machine-approaching circulating water taking structure as claimed in claim 1, wherein: one end of the first unit circulating water standby pump (4) is connected with the adjacent unit circulating water communicating pipe (9) and the first unit circulating water pump two-position three-way electromagnetic valve (7).
5. The thermal power plant unit machine-before-machine circulating water taking structure of claim 1, characterized in that: and one end of the second unit circulating water standby pump (6) is connected with the adjacent unit circulating water communicating pipe (9) and the second unit circulating water pump two-position three-way electromagnetic valve (8).
6. The thermal power plant unit machine-before-machine circulating water taking structure of claim 1, characterized in that: one side of the electric butterfly valve (10) of the first unit is connected with a circulating water pump outlet main pipe (1) of the first unit, and the other side of the electric butterfly valve is connected with a circulating water communicating pipe (9) of the adjacent unit.
7. The thermal power plant unit machine-approaching circulating water taking structure as claimed in claim 1, wherein: one side of the electric butterfly valve (11) of the second unit is connected with the outlet main pipe (2) of the circulating water pump of the second unit, and the other side of the electric butterfly valve is connected with the circulating water communicating pipe (9) of the adjacent unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220733869.7U CN218820336U (en) | 2022-03-31 | 2022-03-31 | Thermal power plant unit gets and is close quick-witted circulating water structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220733869.7U CN218820336U (en) | 2022-03-31 | 2022-03-31 | Thermal power plant unit gets and is close quick-witted circulating water structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218820336U true CN218820336U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220733869.7U Active CN218820336U (en) | 2022-03-31 | 2022-03-31 | Thermal power plant unit gets and is close quick-witted circulating water structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218820336U (en) |
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2022
- 2022-03-31 CN CN202220733869.7U patent/CN218820336U/en active Active
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