CN217379148U - Leakage and accident drainage system for underground powerhouse of pumped storage power station - Google Patents
Leakage and accident drainage system for underground powerhouse of pumped storage power station Download PDFInfo
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- CN217379148U CN217379148U CN202220767416.6U CN202220767416U CN217379148U CN 217379148 U CN217379148 U CN 217379148U CN 202220767416 U CN202220767416 U CN 202220767416U CN 217379148 U CN217379148 U CN 217379148U
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Abstract
The utility model discloses a leakage drainage and accident drainage system for underground powerhouse of pumped storage power station, which comprises a water collecting well, a deep well submersible pump, a combined exhaust valve, a flow switch, a pressure gauge, a check valve, a manual ball valve, a pressure wave pre-stop valve, a leakage drainage header pipe, a pressure type liquid level transmitter and a float type liquid level switch; the deep well submersible pump, the combined exhaust valve, the flow switch, the pressure gauge, the check valve, the manual ball valve and the leakage drainage main pipe are sequentially connected, and the leakage drainage main pipe is led to the outside. The system can be used for draining accumulated water in the plant to the outside in the accident state of the water flooded plant while ensuring the functions of collecting and discharging water leakage, equipment drainage, machine pits and floor drain drainage of the underground hydraulic structure, thereby improving the safety of the underground plant, being beneficial to reducing the accident range and loss when accidents such as the water flooded plant occur, and striving for evacuation time for operation and maintenance personnel.
Description
Technical Field
The utility model relates to a hydraulic and hydroelectric engineering technical field especially relates to a leakage drainage and accident drainage system of pumped storage power station underground factory building.
Background
At present, a pumped storage power station generally adopts a deep buried underground plant layout scheme, and for the pumped storage power station with a conditional gravity drainage hole, water leakage of hydraulic structures, equipment drainage, machine pit drainage, floor drain drainage and the like can be led out of a plant through the gravity drainage hole. The pumped storage power station which does not meet the conditions can only collect the water leakage of the hydraulic structure, the equipment drainage, the machine pit, the floor drain drainage and the like to the leakage water collecting well through the drainage gallery and the drainage pipeline, and then the water leakage is discharged to the pressure regulating chamber through the pressurization of the water pump.
If the scheme of draining the leakage water to the pressure regulating chamber is adopted, when the water channel system is in the emptying maintenance state, the pressure regulating chamber does not have the drainage condition, so that the leakage drainage system cannot be put into operation, and a temporary drainage measure needs to be searched.
If the leakage of the water channel system causes extreme accidents such as flooding the factory building, the leakage drainage system does not have the capability of timely discharging the leakage water and the accident accumulated water in the factory building out of the factory.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a when can guarantee that underground hydraulic structure leakage water, equipment drainage, machine hole and floor drain drainage collect and arrange the function outward, also can arrange ponding to outdoor drainage system in the factory building under the accident situation such as the water logging factory building to promote current leakage drainage system's function, reduce accident range, reduce the loss.
In order to solve the technical problem, the utility model discloses a technical scheme is: a leakage drainage and accident drainage system for underground powerhouses of pumped storage power stations comprises a water collecting well, a deep well submersible pump, a combined exhaust valve, a flow switch, a pressure gauge, a check valve, a manual ball valve, a pressure wave pre-stop valve, a leakage drainage main pipe, a pressure type liquid level transmitter and a float type liquid level switch, wherein the deep well submersible pump, the combined exhaust valve, the flow switch, the pressure gauge, the check valve, the manual ball valve and the leakage drainage main pipe are sequentially connected;
the water collecting well is arranged in a tail lock chamber of the underground workshop and is used for collecting leakage water of the underground hydraulic structure, equipment drainage, a machine pit and floor drain drainage;
the deep well submersible pump is arranged in the water collecting well, is used for discharging the collected leakage water to the outdoor, and is also used as an accident drainage pump in accident states such as a water flooded workshop and the like;
the composite exhaust valve is used for exhausting air in the leakage drainage main pipe;
the flow switch is used for monitoring the outlet flow of the deep well submersible pump and switching the deep well submersible pump to be used as a working pump or a standby pump;
the pressure gauge is used for monitoring the pressure of the leakage drainage main pipe;
the check valve is used for preventing water in the leakage drainage main pipe from flowing backwards;
the manual ball valve is used for blocking water flow in the leakage drainage main pipe during maintenance;
the leakage drainage main pipe is used for leading leakage water or accident water pressurized by the deep well submersible pump to the outside of an underground workshop;
the pressure wave pre-stopping valve is connected between the leakage drainage main pipe and the water collecting well in a supporting mode and used for eliminating water hammer in the leakage drainage main pipe;
the pressure type liquid level transmitter is arranged in the water collecting well and used for monitoring the water level change in the water collecting well;
the float type liquid level switch is arranged in the water collecting well and used for controlling the starting/closing of the deep well submersible pump according to the water level change in the water collecting well.
The leakage drainage main pipes are at least two, and each leakage drainage main pipe is connected with a plurality of groups of water pumping pipelines consisting of a deep well submersible pump, a combined type exhaust valve, a flow switch, a pressure gauge, a check valve and a manual ball valve.
Each leakage drainage main pipe is also provided with a total pressure meter and a total manual ball valve.
The utility model has the advantages that: the underground water conservancy project building water leakage prevention device has the advantages that functions of collecting and discharging water leakage, equipment drainage, machine pits and floor drain drainage of the underground water conservancy project building are guaranteed, meanwhile, the underground water conservancy project building water leakage prevention device can be used for discharging accumulated water in the plant to the outside in a water flooded plant accident state, on one hand, safety of the underground plant is improved, on the other hand, reduction of accident range and loss are facilitated when accidents such as water flooded plants occur, and evacuation time is strived for operation and maintenance personnel.
Drawings
FIG. 1 is a schematic diagram of a seepage and accident drainage system for underground powerhouses of pumped storage power stations;
in the figure: 1- - -a sump well; 2-deep well submersible pump; 3- -composite exhaust valve; 4-flow switch; 5- -pressure gauge; 6-check valve; 7-a ball valve; 8- -pressure wave check valve; 9- -leaky main drain; 10- -pressure level transmitter; 11- -float type liquid level switch.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the utility model discloses pumped storage power station underground factory building seepage drainage and accident drainage system, including sump pit 1, deep well immersible pump 2, combined type discharge valve 3, flow switch 4, manometer 5, check valve 6, manual ball valve 7, pressure wave foreclose valve 8, seepage drainage house steward 9, pressure type liquid level transmitter 10 and float type liquid level switch 11, deep well immersible pump 2, combined type discharge valve 3, flow switch 4, manometer 5, check valve 6, manual ball valve 7 and seepage drainage house steward 9 link to each other in proper order;
the water collecting well 1 is arranged in a tail lock chamber of an underground factory building and is used for collecting leakage water of the underground hydraulic structure, equipment drainage, a machine pit and floor drain drainage;
the deep well submersible pump 2 is arranged in the water collecting well 1 and used for discharging collected leakage water to the outside and also used as an accident drainage pump in accident states such as factory buildings flooded by water;
the compound exhaust valve 3 is used for exhausting air in the leakage drainage main pipe 9;
the flow switch 4 is used for monitoring the outlet flow of the deep well submersible pump 2 and switching the deep well submersible pump as a working pump or a standby pump;
the pressure gauge 5 is used for monitoring the pressure of the leakage drainage main pipe 9;
the check valve 6 is used for preventing water in the seepage drainage main pipe 9 from flowing backwards;
the manual ball valve 7 is used for blocking water flow in the leakage drainage main pipe 9 during maintenance;
the leakage drainage main pipe 9 is used for leading leakage water or accident water pressurized by the deep well submersible pump 2 to the outside of an underground workshop;
the pressure wave preventing valve is connected between the leakage drainage main pipe 9 and the water collecting well 1 in a supporting mode and used for eliminating water hammer in the leakage drainage main pipe 9;
the pressure type liquid level transmitter 10 is arranged in the water collecting well 1 and is used for monitoring the water level change in the water collecting well 1;
the float type liquid level switch 11 is arranged in the water collecting well 1 and used for controlling the starting/closing of the deep well submersible pump 2 according to the water level change in the water collecting well 1.
The number of the leakage drainage main pipes 9 is at least two, and each leakage drainage main pipe 9 is connected with a plurality of groups of water pumping pipelines consisting of a deep well submersible pump 2, a combined type exhaust valve 3, a flow switch 4, a pressure gauge 5, a check valve 6 and a manual ball valve 7. Each leakage drainage main pipe 9 is also provided with a total pressure gauge 15 and a total manual ball valve 17.
The following is further explained by taking a certain large pumped storage power station adopting the technical scheme of the utility model as an example and combining the accompanying drawings:
a deep-buried underground plant layout scheme is adopted in a large pumped storage power station project, and a self-flow drainage hole is not arranged under the condition, so a seepage water collecting well 1 is arranged in a tail gate hole, seepage water, equipment drainage, machine pit and floor drain drainage and the like of a hydraulic structure are collected to the seepage water collecting well through a drainage gallery and a drainage pipeline, 6 deep well submersible pumps 2, a pressure type liquid level transmitter 10 and a float type liquid level switch 11 are arranged in the water collecting well, wherein the pressure type liquid level transmitter 10 is used for monitoring the water level change in the water collecting well 1, and the float type liquid level switch 11 is used for controlling the starting/closing of the deep well submersible pumps 2 according to the water level change in the water collecting well 1. The outlet of the deep well submersible pump 2 is sequentially connected with a composite exhaust valve 3, a flow switch 4, a pressure gauge 5, a check valve 6, a manual ball valve 7 and a leakage drainage main pipe 9, and the composite exhaust valve 3 is used for exhausting air in the leakage drainage main pipe 9; the flow switch 4 is used for monitoring the outlet flow of the deep well submersible pump 2 and switching the working pump and the standby pump; the pressure gauge 5 is used for monitoring the pressure of the leakage drainage main pipe 9; the check valve 6 is used for preventing water in the seepage drainage main pipe 9 from flowing backwards; the manual ball valve 7 is used for blocking water flow in the leakage drainage main pipe 9 during maintenance; the leakage drainage main pipe 9 is used for leading leakage water or accident ponding water pressurized by the deep well submersible pump 2 to a lower reservoir; considering that the leakage main drainage pipe leads to a lower reservoir and is long in pipeline, the pressure wave pre-stopping valve 8 is arranged to be connected with the leakage main drainage pipe 9 in a branching mode and used for eliminating water hammer in the leakage main drainage pipe 9.
The utility model discloses a drainage system when having guaranteed that underground hydraulic structure leakage water, equipment drainage, machine hole and floor drain drainage collect with outer row function, this system also can be used to get rid of ponding to outdoor in the factory building under the waterflooding factory building accident condition, has improved the security of underground factory building on the one hand, and on the other hand is favorable to reducing the accident scope when taking place accidents such as the waterflooding factory building, reduces the loss, strives for evacuation time for fortune dimension personnel.
The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, the scope of the present invention should not be limited by the embodiment, that is, all equivalent changes or modifications made by the spirit of the present invention should still fall within the scope of the present invention.
Claims (3)
1. The system is characterized by comprising a water collecting well (1), a deep well submersible pump (2), a combined exhaust valve (3), a flow switch (4), a pressure gauge (5), a check valve (6), a manual ball valve (7), a pressure wave pre-stop valve (8), a leakage drainage main pipe (9), a pressure type liquid level transmitter (10) and a float type liquid level switch (11), wherein the deep well submersible pump (2), the combined exhaust valve (3), the flow switch (4), the pressure gauge (5), the check valve (6), the manual ball valve (7) and the leakage drainage main pipe (9) are sequentially connected;
the water collecting well (1) is arranged in a tail lock chamber of an underground workshop and is used for collecting leakage water of underground hydraulic structures, equipment drainage, machine pits and floor drain drainage;
the deep well submersible pump (2) is arranged in the water collecting well (1) and is used for discharging collected leakage water to the outdoor and also used as an accident drainage pump in the state of a water flooded workshop accident;
the composite exhaust valve (3) is used for exhausting air in the leakage drainage main pipe (9);
the flow switch (4) is used for monitoring the outlet flow of the deep well submersible pump (2) and switching the deep well submersible pump to be used as a working pump or a standby pump;
the pressure gauge (5) is used for monitoring the pressure of the leakage drainage main pipe (9);
the check valve (6) is used for preventing water in the leakage drainage main pipe (9) from flowing backwards;
the manual ball valve (7) is used for blocking water flow in the leakage drainage main pipe (9) during maintenance;
the leakage drainage main pipe (9) is used for leading leakage water or accident water pressurized by the deep well submersible pump (2) to the outside of an underground workshop;
the pressure wave preventing valve is connected between the leakage drainage main pipe (9) and the water collecting well (1) in a supporting mode and used for eliminating water hammer in the leakage drainage main pipe (9);
the pressure type liquid level transmitter (10) is arranged in the water collecting well (1) and is used for monitoring the water level change in the water collecting well (1);
the float type liquid level switch (11) is arranged in the water collecting well (1) and is used for controlling the starting/closing of the deep well submersible pump (2) according to the water level change in the water collecting well (1).
2. The pumped storage power station underground powerhouse leakage drainage and accident drainage system according to claim 1, characterized in that the number of the leakage drainage main pipes (9) is at least two, and each leakage drainage main pipe (9) is connected with a plurality of groups of water pumping pipelines composed of a deep well submersible pump (2), a combined type exhaust valve (3), a flow switch (4), a pressure gauge (5), a check valve (6) and a manual ball valve (7).
3. The pumped storage power station underground powerhouse leakage drainage and accident drainage system according to claim 1, characterized in that each leakage drainage main pipe (9) is further provided with a master pressure gauge (15) and a master manual ball valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220767416.6U CN217379148U (en) | 2022-03-31 | 2022-03-31 | Leakage and accident drainage system for underground powerhouse of pumped storage power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220767416.6U CN217379148U (en) | 2022-03-31 | 2022-03-31 | Leakage and accident drainage system for underground powerhouse of pumped storage power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217379148U true CN217379148U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220767416.6U Active CN217379148U (en) | 2022-03-31 | 2022-03-31 | Leakage and accident drainage system for underground powerhouse of pumped storage power station |
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| Country | Link |
|---|---|
| CN (1) | CN217379148U (en) |
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2022
- 2022-03-31 CN CN202220767416.6U patent/CN217379148U/en active Active
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