Reservoir water replenishing device under pumped storage

Abstract

The utility model provides a reservoir water replenishing device under pumped storage. Comprising a water collecting tank, a water inlet pipeline is arranged in the water collecting tank, a water outlet of the water inlet pipeline is connected with a water inlet end of an L-shaped connecting pipe, and a water outlet end of the connecting pipe is connected with a water inlet end of a water outlet pipe to form a continuous water guide path; the water inlet end of the water injection pipe is arranged in the water collecting tank and located near the bottom of the water collecting tank, and the top of the water collecting tank is provided with an early warning module which is fixed to the tank wall through a support and used for monitoring the water level state in real time. According to the tunnel water replenishing system, the problem of outward drainage of seepage water of the tunnel is solved, the water replenishing amount needed by a traditional water replenishing project is reduced, and then the electric charge consumed by water replenishing is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pumped storage power station water supplement engineering construction technical field, concretely is a pumped storage lower reservoir water supplement device. BACKGROUND

[0002] Pumped storage power station water supplement engineering usually sets up special pump station facilities and water supply pipeline to supplement water, adopts the water supplement mode of special pump station facilities + water supply pipeline, which needs to consume a large amount of cost and resources, and in the process of chamber excavation, the water seepage part that cannot be completely blocked is usually provided with a drainage pipeline or a drainage ditch to guide and drain the water seepage to the outside of the tunnel, reduce the water level in the tunnel and reduce the influence of water seepage on the tunnel structure.

[0003] The rainfall of the pumped storage power station in the northwest region is less, and the water quantity supplemented by natural runoff and rainfall is limited, most of the pumped storage power stations in the prior art supplement water through water pumps and water supply pipelines, and when the water supplement source is insufficient, water needs to be transferred from the outside or rely on underground water, which further aggravates the regional water resource shortage; the long-period operation of the water pump consumes a large amount of electric energy, especially in remote areas where the power supply is unstable, the operation and maintenance cost is significantly increased, and a large amount of water and electricity fees need to be consumed;

[0004] Pipe blockage problem: most of the current drainage devices cannot filter the gravel and silt mixed in the water seepage in the chamber, and the gravel, silt and other impurities mixed in the water seepage directly enter the drainage pipeline, which is easy to deposit at the elbow and valve after long-term operation, causing the pipe diameter to narrow or even completely block, and frequent shutdown cleaning is needed; pipe blockage greatly reduces the drainage efficiency, and additional human and electric power resources are needed in the cleaning process, long-time water seepage is easy to block the pipe, greatly affects the drainage efficiency, and consumes a large amount of electric energy for water seepage in the chamber;

[0005] Siphon drainage is caused by the intermolecular attraction and potential difference of liquid molecules, that is, the water column pressure difference is used to make the water rise and flow to the low place. Because the water surface of the pipe opening bears approximately the same atmospheric pressure, the water column on the side with large pressure flows to the side with small pressure, until the combined pressure on both sides is equal, the water surface in the container becomes equal height, and the water stops flowing. The existing siphon system needs to use a water pump to inject a large amount of water into the water outlet pipe again to restart the siphon effect when the water level is insufficient, which is complicated and energy-consuming.

[0006] Therefore, there is an urgent need for a pumped storage lower reservoir water supplement device to solve the above problems. SUMMARY

[0007] The utility model discloses a purpose at overcoming above -mentioned insufficient, provide a pumped storage lower reservoir water replenishing device, utilize liquid pressure difference and atmospheric pressure difference to realize the automatic flow of water, and the water seepage that appears in tunnel excavation process is led to lower reservoir and is used as lower reservoir auxiliary water replenishing, and the water inlet pipe of lower reservoir water replenishing device is U -shaped pipe, and the water inlet pipe mouth is upwards, and the water inlet has water inlet filter screen, prevents the gravel, silt in the water collecting pool from entering the water inlet pipe, causes the blockage in the water inlet pipe.

[0008] The utility model discloses a purpose at overcoming above -mentioned insufficient, provide a pumped storage lower reservoir water replenishing device, utilize liquid pressure difference and atmospheric pressure difference to realize the automatic flow of water, and the water seepage that appears in tunnel excavation process is led to lower reservoir and is used as lower reservoir auxiliary water replenishing, and the water inlet pipe of lower reservoir water replenishing device is U -shaped pipe, and the water inlet pipe mouth is upwards, and the water inlet has water inlet filter screen, prevents the gravel, silt in the water collecting pool from entering the water inlet pipe, causes the blockage in the water inlet pipe.

[0009] The water inlet of the water inlet pipe is connected with the water outlet end of the water injection pipe, the water inlet end of the water injection pipe is arranged in the water collecting pool, the water inlet end of the water injection pipe is located near the bottom of the water collecting pool, the top of the water collecting pool is provided with a warning module, the warning module is fixed to the pool wall through a support, and is used for monitoring the water level state in real time.

[0010] Preferably, the water inlet pipe is a U-shaped tubular structure, the water outlet and the water inlet are at the same horizontal height, and the pipe openings of the water outlet and the water inlet are both arranged upwards.

[0011] Preferably, a filter screen is arranged at the water inlet, and a through valve is embedded in the water inlet pipe below the filter screen.

[0012] Preferably, the through valve is a one-way through valve, and water flow can only flow to the water outlet along the pipe.

[0013] Preferably, an electronic valve is arranged at the water outlet end of the water outlet pipe.

[0014] Preferably, the warning module is fixed to the side wall of the water collecting pool through a support, the warning module comprises an infrared range finder and an alarm, the infrared range finder is suspended above the water surface of the water collecting pool, the probe of the infrared range finder is vertically aligned with the water surface of the water collecting pool, the alarm is arranged on the support and supports sound and light alarm signal output.

[0015] Preferably, the infrared range finder is connected with the alarm, and when the water amount in the water collecting pool is less than a set threshold value, the alarm is started to emit high-frequency buzzing and red warning light flashing.

[0016] Preferably, the water inlet of the water inlet pipe is higher than the water inlet end of the water injection pipe.

[0017] Preferably, the water injection pipe is provided with a water pump, and the two ends are connected with the water injection pipe through flanges.

[0018] Preferably, the diameter of the water injection pipe is smaller than the inner diameter of the water injection port, and the water injection port is provided with a water injection port valve, which can completely block the communication between the water injection pipe and the water outlet pipe when closed.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model discloses a siphon effect is realized automatic flow of water, reduces the dependence on water pump, reduces energy consumption;

[0021] 2. The utility model discloses a U-shaped water inlet pipe with a water inlet filter screen, the filter screen can block the gravel and silt into the pipeline, prevent the blockage;

[0022] 3. The utility model discloses an infrared range finder real -time monitoring water volume, when water volume is below threshold value triggers alarm, and prompts the closing electronic valve, keeps the water -filled pipe, avoids the siphon interruption and needs to repeat water injection, reduces manual intervention, reduces manpower cost;

[0023] 4. The utility model discloses the whole water replenishing process does not need manpower on -the -spot monitoring, can save manpower cost greatly. DRAWINGS

[0024] Fig. 1 It is the whole structure connection schematic diagram of the utility model;

[0025] Fig. 2 It is the utility model work flow chart. CONCRETE IMPLEMENTATION

[0026] The utility model will be further explained in connection with the drawings and examples:

[0027] Referring to Figs. 1-2 A water replenishing device for pumped storage lower reservoir, comprising a water collecting pool 1, a water inlet pipeline 6 is arranged in the water collecting pool 1, the water outlet 15 of the water inlet pipeline 6 is connected with the water inlet end of the L-shaped connecting pipe 2, the water outlet end of the connecting pipe 2 is connected with the water inlet end of the water outlet pipe 13, forming a continuous water guide path, and the water outlet pipe 13 is provided with a water injection port 11 at the top of the middle part;

[0028] The water injection port 11 is connected with the water outlet end of the water injection pipe 8, the water inlet end of the water injection pipe 8 is arranged in the water collecting pool 1, and the water inlet end of the water injection pipe 8 is located near the bottom of the water collecting pool 1, and the water collecting pool 1 is provided with a warning module at the top, which is fixed on the pool wall through a support and is used for real-time monitoring of water level state. The water collecting pool 1 is used for collecting seepage water generated by chamber excavation, and the top of the water collecting pool 1 is open.

[0029] Preferably, the water inlet pipe 6 is a U-shaped tubular structure, the water outlet 15 and the water inlet 3 are at the same horizontal level, and the water outlet 15 and the water inlet 3 are both upwardly arranged.

[0030] Preferably, the water inlet 3 is provided with a filter screen 4, and the lower part of the filter screen 4 is provided with a guide valve 5 in the water inlet pipe 6. The filter screen 4 prevents the gravel and silt in the water collecting pool from entering the water inlet pipe 6, causing the water inlet pipe to be blocked. The filter screen 4 is made of corrosion-resistant stainless steel and has a pore size of 1-2 mm, which is used to intercept suspended particles and impurities. The guide valve 5 is installed below the filter screen 4 and is embedded in the inner wall of the water inlet pipe 6, which can control the water flow by manual or electric means.

[0031] Preferably, the guide valve 5 is a one-way guide valve, and the water flow can only flow in the direction of the water outlet 15 along the pipe. The valve core adopts a spring-loaded structure, which only allows the water flow to flow from the water collecting pool 1 to the water outlet pipe 13. When the water flow is reversed, the valve core is automatically closed under the action of water pressure and spring force, completely blocking the backflow.

[0032] Preferably, the water outlet pipe 13 is provided with an electronic valve 14 at the water outlet end. After the siphon effect stops, the water outlet is still full of water, which avoids the need to inject water into the water outlet pipe again when the siphon effect is started next time.

[0033] Preferably, the early warning module is fixed on the side wall of the water collecting pool 1 by a support, and the early warning module includes an infrared range finder 10 and an alarm 9. The infrared range finder 10 is suspended above the water surface of the water collecting pool 1, and the probe of the infrared range finder 10 is vertically aligned with the water surface of the water collecting pool 1. The alarm 9 is arranged on the support and supports the output of audible and visual alarm signals. The distance h1 between the infrared range finder 10 and the water surface, and the distance h2 between the infrared range finder 10 and the water inlet 3 are set as △h. When h2-h1=△h, it indicates that the water in the water collecting pool is insufficient, and the siphon effect is immediately stopped.

[0034] Preferably, the infrared range finder 10 is connected with the alarm 9, and the infrared range finder 10 starts the alarm 9 to emit high-frequency buzzing and red warning light flashing when it detects that the water quantity in the water collecting pool 1 is less than the set threshold value. The alarm 9 is connected with the infrared range finder 10, and the alarm 9 alarms when h2-h1=△h, prompting the staff to close the electronic valve 14. Because the guide valve 5 is a one-way guide valve, the water outlet pipe and the water inlet pipe are still full of water after the siphon effect stops, which avoids the need to inject water into the water outlet pipe 13 again when the siphon effect is started with h2-h1>△h.

[0035] Preferably, the water inlet 3 of the water inlet pipe 6 is higher than the water inlet end of the water injection pipe 8. This ensures that when the alarm 9 warns, the water inlet end of the water injection pipe 8 is still below the water surface.

[0036] Preferably, the water injection pipe 8 is provided with a water pump 7, and both ends of the water injection pipe are connected to the water injection pipe through flanges. The water in the water collecting pool 1 can be pumped into the water injection pipe 8 and then discharged into the water outlet pipe 13.

[0037] Preferably, the diameter of the water injection pipe 8 is smaller than the inner diameter of the water injection port 11, and the water injection port 11 is provided with a water injection port valve 12, which can completely block the communication between the water injection pipe 8 and the water outlet pipe 13 when closed. The air in the pipe can be discharged when the water injection pipe 8 injects water into the water outlet pipe 13.

[0038] The working principle of the embodiment is as follows:

[0039] The staff opens the water injection port valve 12, closes the electronic valve 14, injects water into the water outlet pipe 13 through the water pump 7, stops injecting water when water flows out of the water injection port 11, and closes the water injection port valve 12. Since the water inlet valve 5 is one-way, the electronic valve 14 is closed, and water cannot flow out of the water outlet pipe 13. At this time, the electronic valve 14 is opened, and due to the siphon effect, the water in the water collecting pool 1 automatically flows into the lower reservoir through the water inlet pipe 6 and the water replenishment pipe formed by the connecting pipe 2 and the water outlet pipe 13. When the bottom of the connecting pipe 2 and the highest point of the water outlet pipe 13 are close to the height of a water column of one atmosphere pressure, the siphon effect stops.

[0040] The above embodiment is only a preferred technical solution of the present application, and should not be regarded as a limitation of the present application. The protection scope of the present application should be based on the technical solution claimed in the claims, including the equivalent replacement scheme of the technical features claimed in the claims. That is, the equivalent replacement improvement within this range is also within the protection scope of the present application.

Claims

1. A water replenishment device for a pumped-storage reservoir, comprising a water collection tank, characterized in that: The water collection tank is equipped with an inlet pipe. The outlet of the inlet pipe is connected to the inlet end of the L-shaped connecting pipe, and the outlet end of the connecting pipe is connected to the inlet end of the outlet pipe, forming a continuous water guiding path. A water inlet is provided at the top of the middle part of the outlet pipe. The water inlet is connected to the outlet of the water inlet pipe, and the inlet of the water inlet pipe is located inside the water collection tank. The inlet of the water inlet pipe is located near the bottom of the water collection tank. An early warning module is installed on the top of the water collection tank and is fixed to the tank wall by a bracket for real-time monitoring of the water level.

2. The water replenishment device for a pumped-storage reservoir according to claim 1, characterized in that: The water inlet pipe has a U-shaped tubular structure, with the water outlet and water inlet at the same horizontal level, and both the outlet and water inlet are set upwards.

3. A water replenishment device for a pumped-storage reservoir according to claim 2, characterized in that: A filter screen is installed at the water inlet, and a flow valve is embedded in the water inlet pipe below the filter screen.

4. A water replenishment device for a pumped-storage reservoir according to claim 3, characterized in that: The pilot valve is a one-way pilot valve, meaning that water can only flow along the pipe towards the outlet.

5. A water replenishment device for a pumped-storage reservoir according to claim 1, characterized in that: An electronic valve is installed at the outlet end of the water pipe.

6. A water replenishment device for a pumped-storage reservoir according to claim 1, characterized in that: The early warning module is fixed to the side wall of the water collection tank by a bracket. The early warning module includes an infrared rangefinder and an alarm. The infrared rangefinder is suspended above the water surface of the water collection tank, and the infrared rangefinder probe is vertically aligned with the water surface of the water collection tank. The alarm is set on the bracket and supports the output of audible and visual alarm signals.

7. A water replenishment device for a pumped-storage reservoir according to claim 6, characterized in that: The infrared rangefinder is connected to the alarm. When the infrared rangefinder detects that the water level in the collection tank is less than the set threshold, the alarm will be activated, emitting a high-frequency buzzer and flashing a red warning light.

8. A water replenishment device for a pumped-storage reservoir according to claim 1, characterized in that: The inlet of the water inlet pipe is higher than the inlet end of the water injection pipe.

9. A water replenishment device for a pumped-storage reservoir according to claim 1, characterized in that: The water injection pipe is equipped with a water pump, and both ends of the pipe are connected to the water injection pipe via flanges.

10. A water replenishment device for a pumped-storage reservoir according to claim 1, characterized in that: The diameter of the water injection pipe is smaller than the inner diameter of the water injection port. The water injection port is equipped with a water injection valve, which can completely block the connection between the water injection pipe and the water outlet pipe when closed.

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