Siphon water supply device for hydroelectric power stations

Abstract

This utility model belongs to the technical field of siphon water replenishment devices, specifically relating to a siphon water replenishment device for a hydroelectric power station. It includes a siphon tank, an inlet siphon pipe connected to the surface of the siphon tank, a first drain pipe connected to the surface of the siphon tank, a water pump connected to the end of the first drain pipe, a second drain pipe connected to the outlet of the water pump, a tank lid connected to the top of the siphon tank, and a filter screen connected inside the siphon tank. This utility model utilizes the cooperation between a circular threaded mating block, a threaded block, a connecting rod, and a fixing block. When the operator removes the tank lid from the top of the siphon tank, the tank lid simultaneously pulls the filter screen out of the siphon tank. Subsequently, rotating the connecting rod moves the threaded block out of the circular threaded mating block, achieving convenient disassembly and assembly of the filter screen. This makes the filter screen replacement process simpler and more efficient, significantly improving the practicality of the siphon water replenishment device.

Description

Technical Field

[0001] This utility model belongs to the technical field of siphon water replenishment devices, specifically relating to siphon water replenishment devices for hydropower stations. Background Technology

[0002] A siphon water supply device is a device that uses the combined effect of atmospheric pressure and gravity to achieve automatic liquid flow. Its core principle is the siphon phenomenon: when there is a difference in liquid level between the two ends of the pipe and the pipe is filled with liquid, the downward pressure generated by gravity on the higher liquid level and the upward pressure generated by atmospheric pressure on the lower liquid level create a pressure difference, which pushes the liquid to flow continuously through the pipe until the liquid level at both ends is equal or air enters the pipe and destroys the siphon effect.

[0003] A search revealed that patent number "CN202222383535.4" discloses an "Automatic Water Replenishment Device for Foundation Pit Water Supply Wells." This device injects and stores water into a tank via an inlet pipe. A siphon pipe, a first water pipe, and a second water pipe connect the tank to an observation well. When the observation well is short of water, the water in the tank flows into the observation well through the first water pipe, the siphon pipe, and the second water pipe due to the siphon effect. Water injection stops when the water level in the observation well is equal to the water level in the tank. The device has a simple structure, short construction period, rapid response to water shortages in the observation well, and is very convenient to use.

[0004] However, when water flows through the aforementioned siphon water supply device, it contains impurities, necessitating the installation of a filter screen inside the tank. However, the filter screen is installed deep within the tank, and impurities accumulate on its surface during filtration, requiring regular disassembly and cleaning. Due to the tank's depth, the filter screen is difficult to access manually, making disassembly and installation extremely challenging and severely impacting the device's maintenance efficiency and operational stability. Utility Model Content

[0005] The purpose of this invention is to provide a siphon water replenishment device for hydroelectric power stations, aiming to solve the problem in existing technologies where water containing impurities typically requires a filter screen installed inside the device's tank. However, the filter screen is installed deep within the tank, and impurities accumulate on its surface during filtration, necessitating regular disassembly and cleaning. Furthermore, the tank's depth makes manual access to the filter screen extremely difficult, severely impacting the device's maintenance efficiency and operational stability.

[0006] To achieve the above objective, the utility model provides the following technical solution: a siphon water replenishing device for a pumped storage hydropower station, comprising a siphon barrel, wherein a water inlet siphon pipe is connected to the surface of the siphon barrel, a first drain pipe is connected to the surface of the siphon barrel, a water pump is connected to an end of the first drain pipe, a second drain pipe is connected to a water outlet end of the water pump, a barrel cover is connected to a top end of the siphon barrel, a filter screen is connected to the inside of the siphon barrel, a circular threaded butt joint block is connected to a top end of the filter screen, a threaded block is internally and threadedly connected to the circular threaded butt joint block, a connecting rod is connected to a top end of the threaded block, a fixing block is rotatably connected to a top end of the connecting rod, and the fixing block is connected to the barrel cover.

[0007] As a preferred option of the siphon water replenishing device for the pumped storage hydropower station of the utility model, the connecting rod can form a detachable fixed threaded connection with the filter screen through the threaded block and the circular threaded butt joint block.

[0008] As a preferred option of the siphon water replenishing device for the pumped storage hydropower station of the utility model, the filter screen is made of metal.

[0009] As a preferred option of the siphon water replenishing device for the pumped storage hydropower station of the utility model, a sealing gasket is embedded and connected to an outer wall of the filter screen, a support block is connected to a top end of the filter screen, a pull rod is inserted into the support block, and a spring is sleeved on a surface of the pull rod.

[0010] As a preferred option of the siphon water replenishing device for the pumped storage hydropower station of the utility model, the cross section of the pull rod is in a shape of "士", and the pull rod passes through the filter screen and is connected to the sealing gasket.

[0011] As a preferred option of the siphon water replenishing device for the pumped storage hydropower station of the utility model, the spring is sleeved between two protruding parts on the surface of the pull rod.

[0012] As a preferred option of the siphon water replenishing device for the pumped storage hydropower station of the utility model, the pull rod can form an elastic telescopic connection with the support block through the spring.

[0013] Compared with the prior art, the beneficial effects of the utility model are: Through the cooperation among the circular threaded butt joint block, the threaded block, the connecting rod and the fixing block, when an operator takes the barrel cover off the top end of the siphon barrel, the barrel cover can synchronously drive the filter screen to be taken out from the inside of the siphon barrel; then, rotating the connecting rod can drive the threaded block to move out from the inside of the circular threaded butt joint block, so that convenient disassembly and assembly of the filter screen are realized, which makes the replacement process of the filter screen simpler and more efficient, and significantly improves the practicability of the siphon water replenishing device.

[0014] Through the coordinated operation of the sealing gasket, support block, pull rod, and spring, the operator only needs to pull the pull rod to move it and compress the spring when connecting the sealing gasket and the filter screen. After the sealing gasket and the filter screen are accurately engaged, the pull rod is released, and the pull rod will pass through the filter screen under the elastic force of the spring, firmly fixing the sealing gasket. This effectively ensures the stability of the sealing gasket connection and prevents the sealing gasket from detaching from the filter screen during subsequent filter screen installation, thereby improving the sealing performance and reliability of the entire device. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the siphon bucket of this utility model; Figure 3 This is a schematic diagram showing the disassembled connection structure of the filter screen and connecting rod of this utility model; Figure 4 This is a cross-sectional view of the filter screen structure of this utility model; Figure 5 This utility model Figure 4 A magnified structural diagram at point A in the diagram.

[0016] In the diagram: 1. Siphon bucket; 2. Inlet siphon pipe; 3. First drain pipe; 4. Water pump; 5. Second drain pipe; 6. Bucket lid; 7. Filter screen; 8. Circular threaded mating block; 9. Threaded block; 10. Connecting rod; 11. Fixing block; 12. Sealing gasket; 13. Support block; 14. Pull rod; 15. Spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-5This utility model provides the following technical solution: a siphon water replenishment device for a hydroelectric power station, including a siphon bucket 1, an inlet siphon pipe 2 connected to the surface of the siphon bucket 1, a first drain pipe 3 connected to the surface of the siphon bucket 1, a water pump 4 connected to the end of the first drain pipe 3, a second drain pipe 5 connected to the outlet end of the water pump 4, a bucket cover 6 connected to the top of the siphon bucket 1, a filter screen 7 connected inside the siphon bucket 1, a circular threaded mating block 8 connected to the top of the filter screen 7, a threaded block 9 connected to the inside of the circular threaded mating block 8, a connecting rod 10 connected to the top of the threaded block 9, a fixing block 11 rotatably connected to the top of the connecting rod 10, and the fixing block 11 connected to the bucket cover 6.

[0019] In practical use, the siphon water replenishment device mainly consists of a siphon bucket 1, an inlet siphon pipe 2, a first drain pipe 3, a water pump 4, a second drain pipe 5, a bucket lid 6, and a filter screen 7. In actual application scenarios, this device is installed in a hydroelectric power station. One end of the inlet siphon pipe 2 is connected to the upper reservoir, and the second drain pipe 5 is connected to the lower reservoir.

[0020] During operation, a connecting pipe is installed through the connecting flange on the lid 6, and then clean water is injected into the siphon tank 1 through this connecting pipe. After the clean water is injected, the power is connected and the water pump 4 is started. The water pump 4 starts working and discharges the clean water in the siphon tank 1 through the second drain pipe 5, allowing it to flow into the lower reservoir. During this process, a negative pressure will be generated in the siphon tank 1 due to the discharge of water. After the negative pressure is formed, the inlet siphon pipe 2 will draw water from the upper reservoir under the action of negative pressure and inject it into the siphon tank 1. As water from the upper reservoir is continuously injected, the negative pressure in the siphon tank 1 gradually disappears, while the water pump 4 continues to discharge water into the lower reservoir through the second drain pipe 5. At the same time, the inlet siphon pipe 2 will also continue to draw water from the upper reservoir. This process is the manifestation of the siphon effect. Through this effect, the clean water in the lower reservoir can be replenished, thereby maintaining or replenishing the liquid level difference between the upper and lower reservoirs.

[0021] It is worth noting that the water pump 4 is designed to facilitate the discharge of clean water from the siphon tank 1 through the second drain pipe 5.

[0022] Preferably, the connecting rod 10 can be detachably threadedly fixed to the filter screen 7 via the threaded block 9 and the circular threaded mating block 8. The filter screen 7 is made of metal.

[0023] In practical use, when the operator removes the lid 6 from the top of the siphon tank 1, the lid 6 can simultaneously remove the filter screen 7 from the siphon tank 1. Then, by rotating the connecting rod 10, the threaded block 9 can be moved out of the circular threaded mating block 8, realizing the convenient disassembly and assembly of the filter screen 7. This makes the replacement process of the filter screen 7 simpler and more efficient, significantly improving the practicality of the siphon water replenishment device.

[0024] Preferably: a sealing gasket 12 is embedded and connected to the outer wall of the filter screen 7, a support block 13 is connected to the top end of the filter screen 7, a pull rod 14 is inserted into the support block 13, and a spring 15 is sleeved on the surface of the pull rod 14. The cross-section of the pull rod 14 is in a "士"-shaped configuration, and the pull rod 14 passes through the filter screen 7 to be connected with the sealing gasket 12. The spring 15 is sleeved between two protruding portions on the surface of the pull rod 14. The pull rod 14 can form an elastic telescopic connection with the support block 13 through the spring 15.

[0025] In specific use, when connecting the sealing gasket 12 and the filter screen 7, an operator only needs to pull the pull rod 14 to move it and extrude the spring 15 to contract. After the sealing gasket 12 and the filter screen 7 are accurately clamped, the pull rod 14 is released, and the pull rod 14 will pass through the filter screen 7 under the elastic force of the spring 15 to stably fix the sealing gasket 12. This effectively ensures the connection stability of the sealing gasket 12, and can prevent the sealing gasket 12 from separating from the filter screen 7 during the subsequent installation of the filter screen 7, thereby improving the sealing performance and operational reliability of the entire device.

[0026] Working principle: First, the siphon water replenishing device is stably installed in a pumped storage hydropower station, one end of the water inlet siphon pipe 2 is tightly connected to the upper reservoir, and the second drainage pipe 5 is directly connected to the lower reservoir.

[0027] In the working operation stage, the water inlet siphon pipe 2 functions by virtue of its unique siphon effect. Water in the upper reservoir flows smoothly into the siphon barrel 1 through the water inlet siphon pipe 2 along a predetermined path, then flows into the water pump 4 through the first drainage pipe 3, and is finally discharged through the second drainage pipe 5 under the pressurization of the water pump 4 connected to a power supply, thereby realizing clean water replenishment for the lower reservoir and effectively maintaining and supplementing the liquid level difference between the upper and lower reservoirs.

[0028] When performing regular maintenance on the siphon water replenishing device, an operator only needs to remove the barrel cover 6 from the top end of the siphon barrel 1, the barrel cover 6 will synchronously drive the filter screen 7 to be taken out of the siphon barrel 1 together. Then, by rotating the connecting rod 10, the threaded block 9 will be driven to move out of the circular threaded docking block 8, easily realizing convenient disassembly and assembly of the filter screen 7. This makes the replacement process of the filter screen 7 simple and efficient, and greatly improves the practicability of the siphon water replenishing device in daily use and maintenance.

[0029] Furthermore, when the operator connects the sealing gasket 12 to the filter screen 7, they only need to pull the lever 14. As the lever 14 moves, it compresses the spring 15, causing it to contract. Once the sealing gasket 12 and the filter screen 7 are accurately engaged, the lever 14 is released. The lever 14 will then pass through the filter screen 7 under the elastic force of the spring 15, firmly fixing the sealing gasket 12 in place. This effectively ensures the stability of the connection of the sealing gasket 12 and prevents the sealing gasket 12 from detaching from the filter screen 7 during subsequent installation. This improves the sealing performance and reliability of the entire device. Then, the lid 6 can be reconnected to the siphon tank 1.

[0030] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A siphon water supply device for a hydroelectric power station, comprising a siphon tank (1), characterized in that: A water inlet siphon pipe (2) is connected to the surface of the siphon barrel (1), a first drainage pipe (3) is connected to the surface of the siphon barrel (1), a water pump (4) is connected to an end portion of the first drainage pipe (3), and a second drainage pipe (5) is connected to a water outlet end of the water pump (4); A barrel cover (6) is connected to a top end of the siphon barrel (1), a filter screen (7) is connected inside the siphon barrel (1), a circular threaded docking block (8) is connected to a top end of the filter screen (7), a threaded block (9) is internally threadedly connected to the circular threaded docking block (8), a connecting rod (10) is connected to a top end of the threaded block (9), a fixing block (11) is rotatably connected to a top end of the connecting rod (10), and the fixing block (11) is connected to the barrel cover (6).

2. The siphon water replenishment device for a hydroelectric power station according to claim 1, characterized in that: The connecting rod (10) can form a detachable threaded fixed connection with the filter screen (7) through the threaded block (9) and the circular threaded docking block (8).

3. The siphon water replenishment device for a hydroelectric power station according to claim 1, characterized in that: The filter screen (7) is made of metal.

4. The siphon water replenishment device for a hydroelectric power station according to claim 1, characterized in that: A sealing gasket (12) is embedded and connected to an outer wall of the filter screen (7), a support block (13) is connected to a top end of the filter screen (7), a pull rod (14) is inserted into the support block (13), and a spring (15) is sleeved on a surface of the pull rod (14).

5. The siphon water replenishment device for a hydroelectric power station according to claim 4, characterized in that: The cross section of the pull rod (14) is in a shape of Chinese character "士", and the pull rod (14) passes through the filter screen (7) to be connected with the sealing gasket (12).

6. The siphon water replenishment device for a hydroelectric power station according to claim 4, characterized in that: The spring (15) is sleeved between two protruding portions on the surface of the pull rod (14).

7. The siphon water replenishment device for a hydroelectric power station according to claim 4, characterized in that: The pull rod (14) can form an elastic telescopic connection with the support block (13) through the spring (15).

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