CN219753173U - Gao Lacha tunnel water filling system - Google Patents
Gao Lacha tunnel water filling system Download PDFInfo
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- CN219753173U CN219753173U CN202320736191.2U CN202320736191U CN219753173U CN 219753173 U CN219753173 U CN 219753173U CN 202320736191 U CN202320736191 U CN 202320736191U CN 219753173 U CN219753173 U CN 219753173U
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- water
- pump
- isolation valve
- pipe
- tunnel
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 216
- 238000002955 isolation Methods 0.000 claims abstract description 54
- 238000004891 communication Methods 0.000 description 15
- 238000010276 construction Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
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Abstract
The utility model relates to a high-drop-height tunnel water filling system. The utility model is suitable for the technical field of water conservancy and hydropower engineering. The utility model aims to solve the technical problems that: the water filling system for the high-drop tunnel is provided. The technical scheme adopted by the utility model is as follows: the utility model provides a high drop tunnel water filling system which characterized in that: the water supply device comprises at least two water taking branches, wherein the water taking branches are commonly connected with a water supply main pipe, and the water supply main pipe is communicated with a diversion tunnel through a water outlet pipe; the water intake branch is sequentially provided with a front pump isolation valve, a water pump and a rear pump isolation valve along the flow direction of water flow, two adjacent water intake branches are connected through a connecting pipe, one end of the connecting pipe is communicated between the water pump of one water intake branch and the rear pump isolation valve, the other end of the connecting pipe is communicated between the front pump isolation valve of the other water intake branch and the water pump, and the connecting pipe is provided with the connecting isolation valve.
Description
Technical Field
The utility model relates to a high-drop-height tunnel water filling system. Is suitable for the technical field of water conservancy and hydropower engineering.
Background
Because of the height of the upper reservoir and the lower reservoir and the large burial depth of the unit, the drop of the diversion tunnel of the pumped storage power station is generally higher. The diversion tunnel refers to a water channel from the water inlet/outlet of the upper reservoir to the water inlet valve section of the unit for generating electricity or pumping water. The drop of the diversion tunnel of the pumped storage power station with the medium and high water heads exceeds 400m. Before the power station is built and put into operation, a water filling test is needed to be carried out on the diversion tunnel so as to detect whether the construction quality meets the operation requirement. Because most of the pumped storage power stations have no natural water supply condition, a water filling system is usually arranged to fill water in the diversion tunnel.
At present, most diversion tunnel water filling systems of pumped storage power stations adopt a multi-stage pump for filling water, and the multi-stage pump is high in lift and additionally adjusts a plurality of inlet valves, so that the water filling test requirement can be basically met. However, as the valve adjustment actually changes the operating condition point of the water pump, the flow is small in the actual low-lift stage, the water filling efficiency is low, the time consumption is long, and the construction period can be influenced seriously.
Disclosure of Invention
The utility model aims to solve the technical problems that: aiming at the problems, the water filling system for the high-drop tunnel is provided.
The technical scheme adopted by the utility model is as follows: the utility model provides a high drop tunnel water filling system which characterized in that: the water supply device comprises at least two water taking branches, wherein the water taking branches are commonly connected with a water supply main pipe, and the water supply main pipe is communicated with a diversion tunnel through a water outlet pipe;
the water intake branch is sequentially provided with a front pump isolation valve, a water pump and a rear pump isolation valve along the flow direction of water flow, two adjacent water intake branches are connected through a connecting pipe, one end of the connecting pipe is communicated between the water pump of one water intake branch and the rear pump isolation valve, the other end of the connecting pipe is communicated between the front pump isolation valve of the other water intake branch and the water pump, and the connecting pipe is provided with the connecting isolation valve.
And the water taking branch is also provided with a check valve and a pressure gauge.
And the water outlet pipe is provided with a water outlet isolation valve.
The beneficial effects of the utility model are as follows: according to the utility model, at least two water taking branches are arranged and connected through the connecting pipe, and the parallel operation or the serial operation of the water pumps on each branch is realized by matching with the front pump isolation valve, the rear pump isolation valve and the connecting isolation valve, so that when the water level in a tunnel is low, all the water pumps are operated in parallel, the flow is high, the water filling is fast, and the construction time is saved; when the water level in the tunnel is higher, the water pump is operated in series through different combination modes, so that the water filling requirement of the tunnel at high water level can be met.
The water filling system has clear arrangement principles of equipment, pipelines, valves and the like, is simple and reliable to operate, and can provide a reliable water filling solution for projects containing high-drop tunnels such as pumped storage power stations and the like.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment.
In the figure: 1. a water taking branch pipe I; 101. a pump front isolation valve I; 2. a water pump I; 3. a water supply branch pipe I; 301. a water stop valve I; 302. a pump rear isolation valve I; 303. a pressure gauge I; 4. a water taking branch pipe II; 401. a pump front isolation valve II; 5. a water pump II; 6. a water supply branch pipe II; 601. a water stop valve II; 602. a post-pump isolation valve II; 603. a pressure gauge II; 7. a water taking branch pipe III; 701. a pump front isolation valve III; 8. a water pump III; 9. a water supply branch pipe III; 901. a water stop valve III; 902. a pump rear isolation valve III; 903. a pressure gauge III; 10. a connecting pipe II; 1001. a communication isolation valve II; 11. a connecting pipe I; 1101. a communication isolation valve I; 12. a water supply main pipe; 13. a water outlet pipe II; 1301. a pump front isolation valve II; 14. a water outlet pipe I; 1401. and an isolation valve I before the pump.
Detailed Description
As shown in FIG. 1, this embodiment is a high drop tunnel water filling system, including three water intaking branch road (water intaking branch road I, II, III), the water outlet end of three water intaking branch road connects a water supply main jointly, and water supply main communicates 1# diversion tunnel through outlet pipe I, and water supply main communicates 2# diversion tunnel through outlet pipe II.
In this example, water intake branch road I has water pump I, and water pump I water inlet is through water intake branch pipe I intercommunication water source, and water pump I delivery port is through water supply branch pipe I intercommunication water supply main pipe, wherein is equipped with isolation valve I before the pump on the water intake branch pipe I, is equipped with water stop valve I, isolation valve I and manometer I behind the pump to the water supply main pipe in proper order from water pump I on the water supply branch pipe I.
In the embodiment, a water taking branch II is provided with a water pump II, a water inlet of the water pump II is communicated with a water source through a water taking branch pipe II, a water outlet of the water pump II is communicated with a water supply main pipe through a water supply branch pipe II, a pump front isolation valve II is arranged on the water taking branch pipe II, and a water stop valve II, a pump rear isolation valve II and a pressure gauge II are sequentially arranged on the water supply branch pipe II from the water pump II to the water supply main pipe.
In the embodiment, a water taking branch III is provided with a water pump III, a water inlet of the water pump III is communicated with a water source through a water taking branch III, a water outlet of the water pump III is communicated with a water supply main pipe through a water supply branch III, a front pump isolation valve III is arranged on the water taking branch III, and a water stop valve III, a rear pump isolation valve III and a pressure gauge III are sequentially arranged on the water supply branch III from the water pump III to the water supply main pipe.
In this embodiment, be equipped with communication tube I between water intaking branch road I, II, communication tube I one end is in the water supply branch pipe I between sealing valve I and the pump back isolation valve I, and communication tube I other end is in between isolation valve II and the water pump II before the pump, is equipped with communication isolation valve I on the communication tube I.
In this embodiment, be equipped with connecting tube II between water intaking branch road II, III, connecting tube II one end connects in the water supply branch pipe II between sealing valve II and the pump back isolation valve II, connecting tube II other end connects between isolation valve III and water pump III before the pump, is equipped with connecting isolation valve II on the connecting tube II.
Taking the water filling of a No. 1 diversion tunnel as an example, the actual working principle of the water filling system is explained as follows:
the water level in the diversion tunnel when the water pump is switched can be judged by means of hydrodynamic calculation and the like in advance and by combining with the operation characteristic curve of the water pump, and can be observed in real time through the pressure gauge on the water supply branch pipe. Now, assume that water levels corresponding to switching of a water pump of a water filling system are respectively as follows: el.1, el.2, el.3 (final water level).
State of water filling system before water filling: the outlet isolation valve II on the outlet pipe II is closed, the communication isolation valve I on the communication pipe I and the communication isolation valve II on the communication pipe II are closed, and all other isolation valves are opened.
And starting the water pumps I, II and III, pumping water respectively in parallel operation, collecting the water pumps to a water supply main pipe through the water supply branch pipes I, II and III, filling the water into the 1# diversion tunnel through the water outlet pipe I, and gradually enabling the water level of the 1# diversion tunnel to reach EL.1 after a period of water filling.
After the water level in the 1# diversion tunnel reaches EL.1, closing a pump rear isolation valve I on a water supply branch pipe I and a pump front isolation valve II on a water taking branch pipe II, opening a communication isolation valve I on a communication pipe I, and simultaneously closing a water pump III. And after that, in a period of time, the water pump I and the water pump II are in a serial working state, water flows through the water taking branch pipe I, the water pump I, the connecting pipe I, the water pump II and the water supply branch pipe II to enter the water supply main pipe, and then the water is filled into the 1# diversion tunnel through the water outlet pipe I, and the water level of the 1# diversion tunnel gradually reaches EL.2 after the water is filled for a period of time.
After the water level in the 1# diversion tunnel reaches EL.2, closing a pump rear isolation valve II on a water supply branch pipe II and a pump front isolation valve III on a water taking branch pipe III, opening a communication isolation valve II on a communication pipe II, and simultaneously starting a water pump III. And after that, in a period of time, the water pumps I, II and III are in a serial working state, water flows through the water taking branch pipe I, the water pump I, the connecting pipe I, the water pump II, the connecting official II, the water pump III and the water supply branch pipe III to enter the water supply main pipe, and then the water is filled into the 1# diversion tunnel through the water outlet pipe I, and the water level of the 1# diversion tunnel finally reaches EL.3 after a period of water filling.
The water filling test of the 2# diversion tunnel is consistent with that of the 1# diversion tunnel, and only the isolation valve on the water outlet pipe is required to be operated, so that the detailed description is omitted.
The isolation valve shown in the present system is illustrative only of the principles, and may be manual or automatic in form. The pressure gauge can also be a pressure monitoring element such as a pressure sensor. The automatic operation of the whole system can be realized through automatic control.
In the embodiment, a pumped storage power station formed by two units is taken as an example, and other tunnels with similar high fall are used for water filling. The model number and the number of the water pumps can be determined according to actual conditions, and a water filling system of the water pumps can be designed with reference to the embodiment.
The above embodiments are merely examples of the present utility model, but the present utility model is not limited thereto, and any changes or modifications made by those skilled in the art are included in the scope of the present utility model.
Claims (3)
1. The utility model provides a high drop tunnel water filling system which characterized in that: the water supply device comprises at least two water taking branches, wherein the water taking branches are commonly connected with a water supply main pipe, and the water supply main pipe is communicated with a diversion tunnel through a water outlet pipe;
the water intake branch is sequentially provided with a front pump isolation valve, a water pump and a rear pump isolation valve along the flow direction of water flow, two adjacent water intake branches are connected through a connecting pipe, one end of the connecting pipe is communicated between the water pump of one water intake branch and the rear pump isolation valve, the other end of the connecting pipe is communicated between the front pump isolation valve of the other water intake branch and the water pump, and the connecting pipe is provided with the connecting isolation valve.
2. The high head tunnel water filling system of claim 1, wherein: and the water taking branch is also provided with a check valve and a pressure gauge.
3. The high head tunnel water filling system of claim 1, wherein: and the water outlet pipe is provided with a water outlet isolation valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320736191.2U CN219753173U (en) | 2023-04-06 | 2023-04-06 | Gao Lacha tunnel water filling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320736191.2U CN219753173U (en) | 2023-04-06 | 2023-04-06 | Gao Lacha tunnel water filling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219753173U true CN219753173U (en) | 2023-09-26 |
Family
ID=88070282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320736191.2U Active CN219753173U (en) | 2023-04-06 | 2023-04-06 | Gao Lacha tunnel water filling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219753173U (en) |
-
2023
- 2023-04-06 CN CN202320736191.2U patent/CN219753173U/en active Active
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