Water hammer protection device for large deeply-buried long-distance water delivery pump station

Abstract

The invention discloses a water hammer protection device for a large deeply-buried long-distance water delivery pump station, and relates to the technical field of water conservancy project protection. The water hammer protection device comprises a buffer pool, a water inlet pipe is fixedly connected to the side edge of the buffer pool, and a water outlet pipe is fixedly connected to the side, away from the water inlet pipe, of the buffer pool; the anti-seismic mechanism comprises a power fan arranged in the water outlet pipe, a transmission rod is fixedly connected to the side, close to the water outlet pipe, of the power fan, a first bevel gear is fixedly connected to the side, away from the power fan, of the transmission rod, a second bevel gear is meshed with the side edge of the first bevel gear, and a threaded rod is fixedly connected to the side edge of the second bevel gear. A movable plate is in threaded connection with the upper portion of the threaded rod, a connecting rod is fixedly connected to the side edge of the movable plate, and a base plate is fixedly connected to the side, away from the movable plate, of the connecting rod, the change of the water flow speed can be responded in real time, and when the water flow speed changes suddenly, the device can rapidly adjust the anti-seismic state, and impact vibration generated by the water hammer effect is effectively reduced; and the pipeline and the pump machine are protected from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy project protection, and particularly relates to a water hammer protection device for a large-scale deep-buried long-distance water pumping station. Background Art

[0002] A large-scale deep-buried long-distance water pumping station refers to those pumping stations with a large scale, buried deep underground, and used for long-distance water conveyance projects. These pumping stations usually have a high level of automation and intelligence, can achieve precise control of water flow pressure and flow rate, and at the same time need to have a strong water hammer protection ability to ensure the safe and stable operation of the water conveyance project. A large-scale deep-buried long-distance water pumping station usually consists of a pump house, a water pump unit, an inlet pipe, an outlet pipe, valves, a control system, etc. Among them, the pump house is the core part of the pumping station, used to install the water pump unit and control equipment; the water pump unit is the power source of the pumping station, responsible for pressurizing and transporting the water flow to a long-distance target location.

[0003] In the prior art, due to the sudden opening of the gate or the sudden change of the water flow rate in a large-scale deep-buried long-distance water pumping station, a water hammer effect will be generated. The water hammer effect will cause impact vibration on the pipeline and the pump, and the long-term impact vibration will damage the device. The traditional shock absorption mechanism has a slow vibration response and is difficult to respond in a timely manner according to the real-time water flow situation, and the working efficiency is not high. Therefore, a water hammer protection device for a large-scale deep-buried long-distance water pumping station is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that due to the sudden opening of the gate or the sudden change of the water flow rate in a large-scale deep-buried long-distance water pumping station, a water hammer effect will be generated. The water hammer effect will cause impact vibration on the pipeline and the pump, and the long-term impact vibration will damage the device. The traditional shock absorption mechanism has a slow vibration response and is difficult to respond in a timely manner according to the real-time water flow situation, and the working efficiency is not high, and to propose a water hammer protection device for a large-scale deep-buried long-distance water pumping station.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A water hammer protection device for a large-scale deep-buried long-distance water pump station, including a buffer pool. A water inlet pipe is fixedly connected to the side of the buffer pool, and a water outlet pipe is fixedly connected to the side of the buffer pool away from the water inlet pipe. An earthquake-resistant mechanism is arranged inside the water outlet pipe. The earthquake-resistant mechanism includes a power fan arranged inside the water outlet pipe. A transmission rod is fixedly connected to the side of the power fan close to the water outlet pipe. A first bevel gear is fixedly connected to the side of the transmission rod away from the power fan. A second bevel gear is meshed and connected to the side of the first bevel gear. A threaded rod is fixedly connected to the side of the second bevel gear. A moving plate is threadedly connected above the threaded rod. A connecting rod is fixedly connected to the side of the moving plate. A substrate is fixedly connected to the side of the connecting rod away from the moving plate. A spring is arranged on the side of the substrate. A convex plate is fixedly connected to the side of the spring away from the substrate. The water inlet pipe inputs water flow into the water outlet pipe through the buffer pool. The power fan rotates with the water flow and drives the transmission rod to rotate. The transmission rod drives the second bevel gear to rotate through the first bevel gear. The second bevel gear drives the moving plate to move through the threaded rod. The moving plate drives the substrate to move through the connecting rod. The substrate drives the convex plate to move through the spring and resists the water flow to compress the spring for earthquake resistance.

[0007] Among them, the convex plate is a protruding cone shape, so that the water flow entering the buffer pool undergoes the first group of buffering and is divided into two waves of water flow and enters the two groups of water outlet pipes respectively.

[0008] The above technical solution further includes:

[0009] The transmission rod is rotatably connected to the water outlet pipe, the connecting rod is slidably connected to the buffer pool, a hollow base is fixedly connected to the side of the substrate close to the spring, a sliding rod is slidably connected to the side of the hollow base close to the spring, and the sliding rod is fixedly connected to the convex plate.

[0010] A groove plate is slidably connected below the moving plate, the groove plate is rotatably connected to the threaded rod, and the groove plate is fixedly connected to the buffer pool.

[0011] A telescopic rod is fixedly connected to the side of the buffer pool close to the connecting rod, the telescopic rod is fixedly connected to the substrate, a first telescopic plate is fixedly connected to the side of the buffer pool close to the telescopic rod, and the first telescopic plate is fixedly connected to the substrate.

[0012] A second telescopic plate is fixedly connected to the side of the substrate close to the spring, and the second telescopic plate is fixedly connected to the convex plate.

[0013] A water inlet valve is fixedly connected to the side of the water inlet pipe away from the buffer pool, and a flow monitor is arranged above the water inlet valve.

[0014] One side of the water outlet pipe away from the buffer pool is fixedly connected with a connecting pipe, and one side of the connecting pipe away from the water outlet pipe is fixedly connected with a pump, and a flow dividing valve pipe is arranged on the side of the pump.

[0015] A pressure relief valve is arranged above the buffer pool, and two groups of the pressure relief valves are symmetrically arranged above the buffer pool.

[0016] A pressure monitor is arranged on one side of the buffer pool close to the water inlet pipe.

[0017] The present invention has the following beneficial effects:

[0018] 1. In the present invention, the seismic resistance mechanism composed of components such as a power fan, a transmission rod, a first bevel gear, a second bevel gear, and a threaded rod can respond to the change of water flow velocity in real time. When the water flow velocity suddenly changes, the power fan will rotate rapidly, and drive the threaded rod to rotate through the transmission mechanism, and then drive the moving plate, the connecting rod, the base plate, and the convex plate to move. This design enables the device to quickly adjust the seismic resistance state, effectively reduce the impact vibration generated by the water hammer effect, and protect the pipeline and the pump from damage.

[0019] 2. In the present invention, the convex plate is designed as a protruding cone, which can first contact the water flow and play a preliminary buffering role. At the same time, the base plate is connected with the convex plate through a spring to form a multi-stage buffering system. When the water flow impacts the convex plate, the spring will compress and absorb energy, further reducing the vibration. In addition, the setting of the telescopic rod, the first telescopic plate, and the second telescopic plate also enhances the stability and seismic resistance performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a water hammer protection device for a large-scale deep-buried long-distance water pump station proposed by the present invention;

[0021] Figure 2 is an external structural diagram of the present invention;

[0022] Figure 3 is an internal three-dimensional structural diagram of the present invention;

[0023] Figure 4 is Figure 1 a schematic enlarged view of the structure at A in

[0024] Figure 5 is Figure 3 a schematic enlarged view of the structure at B in

[0025] Figure 6 is Figure 3 a schematic enlarged view of the structure at C in

[0026] In the figure: 1. Buffer pool; 2. Inlet pipe; 3. Outlet pipe; 4. Power fan; 5. Transmission rod; 6. First bevel gear; 7. Second bevel gear; 8. Threaded rod; 9. Moving plate; 10. Connecting rod; 11. Base plate; 12. Spring; 13. Convex plate; 14. Hollow base; 15. Slide bar; 16. Groove plate; 17. Telescopic rod; 18. First telescopic plate; 19. Second telescopic plate; 20. Water inlet valve; 21. Flow monitor; 22. Connecting pipe; 23. Pump; 24. Diverting valve pipe; 25. Pressure relief valve; 26. Pressure monitor. Specific implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1

[0029] As Figures 1 - 6 shown, a water hammer protection device for a large-scale deep-buried long-distance water pump station proposed by the present invention includes a buffer pool 1. A water inlet pipe 2 is fixedly connected to the side of the buffer pool 1. An outlet pipe 3 is fixedly connected to the side of the buffer pool 1 away from the water inlet pipe 2. An earthquake-resistant mechanism is arranged inside the outlet pipe 3. The earthquake-resistant mechanism includes a power fan 4 arranged inside the outlet pipe 3. A transmission rod 5 is fixedly connected to the side of the power fan 4 close to the outlet pipe 3. A first bevel gear 6 is fixedly connected to the side of the transmission rod 5 away from the power fan 4. A second bevel gear 7 is meshed and connected to the side of the first bevel gear 6. A threaded rod 8 is fixedly connected to the side of the second bevel gear 7. A moving plate 9 is threadedly connected above the threaded rod 8. A connecting rod 10 is fixedly connected to the side of the moving plate 9. A base plate 11 is fixedly connected to the side of the connecting rod 10 away from the moving plate 9. A spring 12 is arranged on the side of the base plate 11. A convex plate 13 is fixedly connected to the side of the spring 12 away from the base plate 11. The water inlet pipe 2 inputs water flow into the outlet pipe 3 through the buffer pool 1. The power fan 4 rotates with the water flow and drives the transmission rod 5 to rotate. The transmission rod 5 drives the second bevel gear 7 to rotate through the first bevel gear 6. The second bevel gear 7 drives the moving plate 9 to move through the threaded rod 8. The moving plate 9 drives the base plate 11 to move through the connecting rod 10. The base plate 11 drives the convex plate 13 to move through the spring 12 and compresses the spring 12 through confrontation with the water flow for earthquake resistance.

[0030] The transmission rod 5 is rotatably connected to the outlet pipe 3. The connecting rod 10 is slidably connected to the buffer pool 1. A hollow base 14 is fixedly connected to the side of the base plate 11 close to the spring 12. A slide bar 15 is slidably connected to the side of the hollow base 14 close to the spring 12. The slide bar 15 is fixedly connected to the convex plate 13.

[0031] A groove plate 16 is slidably connected below the moving plate 9. The groove plate 16 is rotatably connected to the threaded rod 8, and the groove plate 16 is fixedly connected to the buffer pool 1.

[0032] In this embodiment, when the water flow enters the inside of the buffer pool 1 through the water inlet pipe 2, the water flow will enter the inside of the water outlet pipe 3 from the buffer pool 1. The water flow entering the inside of the water outlet pipe 3 will drive the anti-seismic mechanism to start operating. When the anti-seismic mechanism operates, the power fan 4 arranged inside the water outlet pipe 3 will be driven by the water flow. When the power fan 4 rotates, the transmission rod 5 fixedly connected to its side will start to rotate. The transmission rod 5 will pass through the inside of the water outlet pipe 3 to drive the first bevel gear 6 to start rotating. When the first bevel gear 6 rotates, the second bevel gear 7 meshed with its side will be driven to rotate. When the second bevel gear 7 rotates, the threaded rod 8 fixedly connected to its side will be driven to rotate. The threaded rod 8 will rotate inside the groove plate 16, and the threaded rod 8 will pass through the moving plate 9 slidably connected to the groove plate 16. The threaded rod 8 rotates inside the moving plate 9 and drives the moving plate 9 to slide inside the groove plate 16 by using the thread connection relationship. When the moving plate 9 slides, the connecting rod 10 fixedly connected to its side will move. The connecting rod 10 will start to move inside the buffer pool 1. When the connecting rod 10 moves, the substrate 11 arranged inside the buffer pool 1 will be driven to move, so that the substrate 11 drives the spring 12 fixedly connected to its side to move. A plurality of groups of springs 12 are arranged between the substrate 11 and the convex plate 13. When the plurality of groups of springs 12 move, the convex plate 13 will be driven to move. When the water flow enters the buffer pool 1, it will impact the convex plate 13 for the first time. An anti-counter relationship is formed between the convex plate 13 and the water flow. At this time, the plurality of groups of springs 12 are compressed and generate elastic potential energy. When the springs 12 are compressed, the convex plate 13 will move and drive the sliding rod 15 to slide inside the hollow base 14. The convex plate 13 divides the water flow into two parts, playing a role in the first-step buffering. The other side of the hollow base 14 is fixedly connected to the substrate 11 to ensure the stability of the connection of the plurality of groups of springs 12. Moreover, the greater the water flow, the greater the rotation speed of the power fan 4, and the greater the power applied to the movement of the plurality of groups of springs 12. Thus, the anti-seismic mechanism can change the anti-seismic ability in real time according to the water flow size, reduce the vibration response time, and achieve an efficient and rapid anti-seismic effect, preventing damage to the device caused by vibration.

[0033] Embodiment Two

[0034] As Figures 1 - 6As shown in the figure, based on the first embodiment, a telescopic rod 17 is fixedly connected to one side of the buffer pool 1 close to the connecting rod 10. The telescopic rod 17 is fixedly connected to the substrate 11. A first telescopic plate 18 is fixedly connected to one side of the buffer pool 1 close to the telescopic rod 17. The first telescopic plate 18 is fixedly connected to the substrate 11.

[0035] A second telescopic plate 19 is fixedly connected to one side of the substrate 11 close to the spring 12. The second telescopic plate 19 is fixedly connected to the convex plate 13.

[0036] A water inlet valve 20 is fixedly connected to one side of the water inlet pipe 2 away from the buffer pool 1. A flow monitor 21 is arranged above the water inlet valve 20.

[0037] A connecting pipe 22 is fixedly connected to one side of the water outlet pipe 3 away from the buffer pool 1. A pump 23 is fixedly connected to one side of the connecting pipe 22 away from the water outlet pipe 3. A flow dividing valve pipe 24 is arranged on the side of the pump 23.

[0038] A pressure relief valve 25 is arranged above the buffer pool 1. Two groups of pressure relief valves 25 are symmetrically arranged above the buffer pool 1.

[0039] A pressure monitor 26 is arranged on one side of the buffer pool 1 close to the water inlet pipe 2.

[0040] In this embodiment, when the substrate 11 moves, the substrate 11 drives the telescopic rod 17 fixedly connected to its side to expand and contract. The other end of the telescopic rod 17 is fixedly connected to the inner wall of the buffer pool 1, mainly to ensure the stability of the anti-seismic mechanism during operation. And a first telescopic plate 18 is fixedly connected between the substrate 11 and the buffer pool 1. 178 can expand and contract its own structure as the substrate 11 moves, preventing water from flowing into the space formed between the substrate 11 and the buffer pool 1. A second telescopic plate 19 is arranged between the convex plate 13 and the substrate 11. The function of the second telescopic plate 19 is the same as that of the first telescopic plate 18.

[0041] Before the water flow enters the water inlet pipe 2, it is controlled by the water inlet valve 20 fixedly connected to one end of the water inlet pipe 2 away from the buffer pool 1. After the water inlet valve 20 is started, the water flow will enter the interior of the water inlet pipe 2. A flow monitor 21 is arranged above the water inlet valve 20, which is used to monitor the flow rate and volume of the water flow in real time. After the water flow passes through the buffer pool 1 and enters the two water outlet pipes 3, it will converge into the connecting pipe 22. The connecting pipe 22 controls the water flow inside it through the pump 23 and transmits it out. A flow dividing valve pipe 24 is arranged at the other end of the pump 23, which is used to divide the water flow and transport it to different directions and positions. A pressure relief valve 25 is arranged above the buffer pool 1. The two symmetrically arranged pressure relief valves 25 are used to discharge the pressure generated by the change of the water flow inside the buffer pool 1 to prevent excessive pressure. The pressure monitor 26 arranged above the buffer pool 1 is used to monitor the internal pressure of the device in real time.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water hammer protection device for a large-scale deep-buried long-distance water delivery pump station, comprising a buffer tank (1), characterized in that: The side of the buffer pool (1) is fixedly connected to a water inlet pipe (2); the side of the buffer pool (1) away from the water inlet pipe (2) is fixedly connected to a water outlet pipe (3); an anti-seismic mechanism is arranged inside the water outlet pipe (3); the anti-seismic mechanism comprises a power fan (4) arranged inside the water outlet pipe (3); the side of the power fan (4) close to the water outlet pipe (3) is fixedly connected to a transmission rod (5); the side of the transmission rod (5) away from the power fan (4) is fixedly connected to a first bevel gear (6); the side of the first bevel gear (6) is meshingly connected to a second bevel gear (7); the side of the second bevel gear (7) is fixedly connected to a threaded rod (8); the upper part of the threaded rod (8) is threadedly connected to a movable plate (9); the side of the movable plate (9) is fixedly connected to a connecting rod (10); the connecting rod (10) is away from the movable plate ( A base plate (11) is fixedly connected to one side of the water inlet pipe (2) and a spring (12) is arranged on the side of the base plate (11). A convex plate (13) is fixedly connected to the side of the spring (12) away from the base plate (11). The water inlet pipe (2) inputs water flow into the inside of the water inlet and outlet pipes (3) through the buffer tank (1). The power fan (4) rotates with the water flow and drives the transmission rod (5) to rotate. The transmission rod (5) drives the second bevel gear (7) to rotate through the first bevel gear (6). The second bevel gear (7) drives the moving plate (9) to move through the threaded rod (8). The moving plate (9) drives the base plate (11) to move through the connecting rod (10). The base plate (11) drives the convex plate (13) to move through the spring (12) and compresses the spring (12) to resist the water flow to resist shock.

2. The water hammer protection device for a large-scale deep-buried long-distance water pump station according to claim 1 is characterized in that: The transmission rod (5) is rotationally connected to the water outlet pipe (3), the connection rod (10) is slidably connected to the buffer tank (1), a hollow base (14) is fixedly connected to the side of the base plate (11) close to the spring (12), a sliding rod (15) is slidably connected to the side of the hollow base (14) close to the spring (12), and the sliding rod (15) is fixedly connected to the convex plate (13).

3. The water hammer protection device for a large-scale deep-buried long-distance water pump station according to claim 1 is characterized in that: A slot plate (16) is slidably connected below the movable plate (9); the slot plate (16) is rotationally connected to the threaded rod (8); and the slot plate (16) is fixedly connected to the buffer tank (1).

4. The water hammer protection device for a large-scale deep-buried long-distance water pump station according to claim 1 is characterized in that: A telescopic rod (17) is fixedly connected to one side of the buffer pool (1) close to the connecting rod (10), and the telescopic rod (17) is fixedly connected to the base plate (11); a first telescopic plate (18) is fixedly connected to one side of the buffer pool (1) close to the telescopic rod (17), and the first telescopic plate (18) is fixedly connected to the base plate (11).

5. The water hammer protection device for a large-scale deep-buried long-distance water pump station according to claim 1 is characterized in that: A second telescopic plate (19) is fixedly connected to one side of the base plate (11) close to the spring (12), and the second telescopic plate (19) is fixedly connected to the convex plate (13).

6. The water hammer protection device for a large-scale deep-buried long-distance water pump station according to claim 1 is characterized in that: A water inlet valve (20) is fixedly connected to the side of the water inlet pipe (2) away from the buffer tank (1), and a flow monitor (21) is arranged above the water inlet valve (20).

7. The water hammer protection device for a large-scale deep-buried long-distance water pump station according to claim 1 is characterized in that: A connecting pipe (22) is fixedly connected to the side of the water outlet pipe (3) away from the buffer tank (1), a pump (23) is fixedly connected to the side of the connecting pipe (22) away from the water outlet pipe (3), and a diverter valve pipe (24) is arranged on the side of the pump (23).

8. The water hammer protection device for a large-scale deep-buried long-distance water pump station according to claim 1 is characterized in that: A pressure relief valve (25) is arranged above the buffer tank (1), and two groups of the pressure relief valves (25) are symmetrically arranged above the buffer tank (1).

9. The water hammer protection device for a large-scale deep-buried long-distance water pump station according to claim 1, characterized in that: A pressure monitoring gauge (26) is provided on one side of the buffer tank (1) close to the water inlet pipe (2).

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