A pump storage power station inlet and outlet water flow control valve

Abstract

The utility model discloses a kind of pumped storage power station inlet and outlet water port flow control valves, belong to valve technical field, including frame, the inside rotation of the frame is connected with multiple water retaining shafts, every water retaining shaft is all set with the gap for water passing on, the top of every water retaining shaft and the bottom of every water retaining shaft are provided with gear, slidingly connected with U-shaped control frame on the frame, two racks are fixedly connected on the U-shaped control frame, every gear is engaged with rack, driving device for driving U-shaped control frame movement is fixedly connected on the frame;Through the U-shaped control frame and rack being set, it is linked with cooperation, can drive multiple water retaining shaft synchronous rotation, the gap opening and closing on water retaining shaft can realize the quick, accurate control of inlet and outlet water port flow, simultaneously, the gap of symmetrical design can make water flow distribution more uniform, reduce eddy current and vibration, further improve adjustment stability.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a flow control valve for the inlet and outlet of a pumped storage power station. Background Technology

[0002] A pumped storage power station is an important facility used for peak shaving, valley filling, frequency regulation, and emergency backup in power systems. It uses excess electricity to pump water from the lower reservoir to the upper reservoir to store potential energy during periods of low electricity demand, and releases the water from the upper reservoir to the lower reservoir to drive turbines to generate electricity during periods of high electricity demand, thereby achieving the spatial and temporal transfer and efficient utilization of energy.

[0003] Upon investigation, a Chinese utility model patent (publication number: CN208311511U) discloses a flow control valve for the inlet and outlet of a pumped storage power station, which includes an intermediate pipe, a first rotating shaft fixedly mounted on the inner wall of the intermediate pipe and parallel to the intermediate pipe via a second support plate, and a flow control component for controlling water flow and mounted on the first rotating shaft; one end of the first rotating shaft is also connected to a power component that enables the flow control component to operate.

[0004] While the aforementioned patent enables quantitative regulation and control of water flow in pumped storage power stations, the valve primarily functions by controlling the gate structure to impede water during actual operation. When water flows through, the high-speed water movement generates significant dynamic impact loads on the gate and creates eddies in the intermediate pipe, easily inducing strong vibrations in the valve structure. Prolonged operation under these harsh conditions leads to severe wear on the valve's sealing surface, ultimately resulting in seal failure or structural damage.

[0005] Therefore, this utility model provides a flow control valve for the inlet and outlet of a pumped storage power station to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved This utility model provides a flow control valve for the inlet and outlet of a pumped storage power station, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a flow control valve for the inlet and outlet of a pumped storage power station, comprising a frame, wherein multiple water-blocking shafts are rotatably connected inside the frame, each water-blocking shaft having a notch for water passage, and a gear being provided at the top and bottom of each water-blocking shaft, a U-shaped control frame being slidably connected to the frame, and two racks being fixedly connected to the U-shaped control frame, each gear meshing with a rack, and a drive device for driving the U-shaped control frame to move being fixedly connected to the frame.

[0008] As a preferred technical solution of this application, the notches are symmetrically formed on the outer surface of each water-blocking rotating shaft.

[0009] As a preferred technical solution of this application, a rotating rod is fixedly connected to the top and bottom of each water-blocking rotating shaft. Multiple circular openings adapted to the rotating rods are opened on the upper and lower surfaces of the frame. Each rotating rod is rotatably connected inside the circular opening. Each gear is fixedly connected to the end of the rotating rod away from the water-blocking rotating shaft.

[0010] As a preferred technical solution of this application, the driving device includes a hydraulic cylinder fixedly connected to the frame, and the other end of the hydraulic cylinder is fixedly connected to the U-shaped control frame.

[0011] As a preferred technical solution of this application, the upper end face and the lower end face of the frame are fixedly connected to the housing, each gear is set inside the housing, and each housing is provided with a through-hole adapted to the U-shaped control frame, the U-shaped control frame is slidably connected inside the through-hole.

[0012] As a preferred technical solution of this application, each of the housings has a sliding groove inside, and two sliders adapted to the sliding groove are fixedly connected on the U-shaped control frame, and the two sliders are slidably connected inside the sliding groove.

[0013] As a preferred technical solution of this application, L-shaped mounting plates are fixedly connected to both the left and right sides of the frame. Each L-shaped mounting plate has multiple mounting holes and multiple reinforcing ribs are fixedly connected to each L-shaped mounting plate. The multiple reinforcing ribs are evenly distributed on the L-shaped mounting plate.

[0014] (III) Beneficial Effects The U-shaped control frame and rack work together to drive multiple water-blocking shafts to rotate synchronously. The opening and closing of the notches on the water-blocking shafts allows for rapid and precise control of the inlet and outlet flow rates. At the same time, the symmetrically designed notches make the water flow distribution more uniform, reduce eddies and vibrations, further improve the stability of regulation, and ensure its service life. Attached Figure Description

[0015] Figure 1 A three-dimensional view of a flow control valve for the inlet and outlet of a pumped storage power station; Figure 2 A side view of a flow control valve for the inlet and outlet of a pumped storage power station; Figure 3 A three-dimensional view of a gear in a flow control valve at the inlet and outlet of a pumped storage power station; Figure 4A three-dimensional view of the frame in the inlet and outlet flow control valve of a pumped storage power station; Figure 5 A three-dimensional view of the water-blocking shaft in the inlet and outlet flow control valve of a pumped storage power station; Figure 6 A three-dimensional view of a U-shaped control frame in the inlet and outlet flow control valve of a pumped storage power station; Figure 7 This is a three-dimensional view of the shell of a flow control valve for the inlet and outlet of a pumped storage power station.

[0016] In the picture: 1. Frame; 2. Water-blocking pivot; 3. Rotating rod; 4. Round opening; 5. Gear; 6. U-shaped control frame; 7. Rack; 8. Hydraulic cylinder; 9. Housing; 10. Through port; 11. Slider; 12. Slide groove; 13. L-shaped mounting plate; 14. Mounting hole; 15. Reinforcing rib. 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] This utility model provides a flow control valve for the inlet and outlet of a pumped storage power station, such as... Figures 1 to 7 As shown, the device includes a frame 1, with multiple water-blocking shafts 2 rotatably connected inside the frame 1. Each water-blocking shaft 2 has a notch for water passage, and the notches are symmetrically located on the outer surface of each water-blocking shaft 2. A gear 5 is provided at the top and bottom of each water-blocking shaft 2. A U-shaped control frame 6 is slidably connected to the frame 1, and two racks 7 are fixedly connected to the U-shaped control frame 6. Each gear 5 meshes with a rack 7. A drive device for driving the movement of the U-shaped control frame 6 is fixedly connected to the frame 1.

[0019] The frame 1 is the valve body, and the water-blocking shaft 2 inside it controls the water flow. The symmetrical notches on the outer surface of the water-blocking shaft 2 can adjust the water passage cross section. When the water-blocking shaft 2 rotates, the relative angle between the notches and the water flow direction changes, thus achieving linear flow regulation. The symmetrical notches ensure uniform pressure distribution when water flows through, reduce eddies and vibrations, and improve the stability of valve operation.

[0020] Specifically, each water-blocking rotating shaft 2 has a rotating rod 3 fixedly connected to its top and bottom. Multiple circular openings 4, adapted to the rotating rods 3, are provided on the upper and lower surfaces of the frame 1. Each rotating rod 3 is rotatably connected inside a circular opening 4. Each gear 5 is fixedly connected to the end of the rotating rod 3 away from the water-blocking rotating shaft 2. The driving device is a hydraulic cylinder 8 fixedly connected to the frame 1, with the other end of the hydraulic cylinder 8 fixedly connected to the U-shaped control frame 6.

[0021] Among them, gear 5 meshes with rack 7 on U-shaped control frame 6 to form a linkage transmission mechanism. When hydraulic cylinder 8 pushes U-shaped control frame 6 to move, rack 7 can drive all gears 5 to rotate synchronously, thereby enabling multiple water-blocking shafts 2 to open and close at a uniform angle.

[0022] A housing 9 is fixedly connected to both the upper and lower ends of the frame 1. Each gear 5 is disposed inside the housing 9. Each housing 9 has a through-hole 10 adapted to the U-shaped control frame 6, and the U-shaped control frame 6 is slidably connected inside the through-hole 10. Furthermore, a sliding groove 12 is provided inside each housing 9. Two sliders 11 adapted to the sliding groove 12 are fixedly connected to the U-shaped control frame 6, and both sliders 11 are slidably connected inside the sliding groove 12.

[0023] The U-shaped control frame 6 is driven by a hydraulic cylinder 8 and can move linearly along the slide 12. The housing 9 can enclose the gear 5 and rack 7 to prevent the intrusion of mud or impurities in the water flow, thus extending its service life. The cooperation between the slide 12 and the slider 11 can limit the movement trajectory of the U-shaped control frame 6, ensuring that it slides only in the set direction and avoiding deviation or shaking.

[0024] L-shaped mounting plates 13 are fixedly connected to both the left and right sides of frame 1. Each L-shaped mounting plate 13 has multiple mounting holes 14 and multiple reinforcing ribs 15 are fixedly connected to it. The reinforcing ribs 15 are evenly distributed on the L-shaped mounting plate 13. The L-shaped mounting plates 13 can be used to fix the valve to the pipeline or hydraulic structure through the mounting holes 14. The reinforcing ribs 15 can significantly improve local stiffness and deformation resistance, making it suitable for high water pressure or vibration environments.

[0025] Working principle: In use, the device is first fixed in the operating position using the L-shaped mounting plate 13 and mounting holes 14. The reinforcing ribs 15 enhance the overall structural strength and adapt to high water pressure environments. During use, the hydraulic cylinder 8 serves as the power source, driving the U-shaped control frame 6 to move linearly along the slide 12. The two racks 7 on the U-shaped control frame 6 move along with it and mesh with the gears 5 at both ends of each water-blocking rotating shaft 2. When it is necessary to adjust the opening and closing of the valve, the linear movement of the racks 7 drives all the gears 5 to rotate synchronously, thereby causing each water-blocking rotating shaft 2 to follow the rotating rod. 3. Rotating the water-blocking shaft 2 changes the position of the notch, thus adjusting the water flow speed. Specifically, the water-blocking shaft 2 can be fully open or fully closed initially, aligning the notch with the water flow direction to allow the maximum flow rate to pass through. The solid part of the water-blocking shaft 2 blocks the water flow, thus sealing it off. When the hydraulic cylinder 8 pushes the U-shaped control frame 6 to move, the water-blocking shaft 2 rotates, and the notch gradually aligns with or offsets the water flow direction, achieving stepless flow rate adjustment. The symmetrical notch ensures uniform water flow distribution, reduces turbulence and pressure fluctuations, improves valve stability, and is beneficial for long-term stable use.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flow control valve for the inlet and outlet of a pumped storage power station, comprising a frame (1), characterized in that: The frame (1) is internally connected to multiple water-blocking shafts (2), each water-blocking shaft (2) has a notch for water passage, and each water-blocking shaft (2) has a gear (5) at its top and bottom. A U-shaped control frame (6) is slidably connected to the frame (1), and two racks (7) are fixedly connected to the U-shaped control frame (6). Each gear (5) meshes with a rack (7), and a drive device for driving the U-shaped control frame (6) to move is fixedly connected to the frame (1).

2. The inlet and outlet flow control valve of a pumped storage power station according to claim 1, characterized in that: The notches are symmetrically opened on the outer surface of each water-blocking pivot (2).

3. The inlet and outlet flow control valve of a pumped storage power station according to claim 2, characterized in that: Each of the water-blocking rotating shafts (2) has a rotating rod (3) fixedly connected to its top and bottom. The upper and lower surfaces of the frame (1) are provided with multiple round openings (4) that are adapted to the rotating rods (3). Each rotating rod (3) is rotatably connected inside the round opening (4). Each gear (5) is fixedly connected to the end of the rotating rod (3) away from the water-blocking rotating shaft (2).

4. The inlet and outlet flow control valve of a pumped storage power station according to claim 3, characterized in that: The drive device includes a hydraulic cylinder (8) fixedly connected to the frame (1), and the other end of the hydraulic cylinder (8) is fixedly connected to the U-shaped control frame (6).

5. The inlet and outlet flow control valve of a pumped storage power station according to claim 1, characterized in that: The upper and lower surfaces of the frame (1) are fixedly connected to a housing (9). Each gear (5) is located inside the housing (9). Each housing (9) has an opening (10) adapted to the U-shaped control frame (6). The U-shaped control frame (6) is slidably connected inside the opening (10).

6. The inlet and outlet flow control valve of a pumped storage power station according to claim 5, characterized in that: Each of the housings (9) has a groove (12) inside. Two sliders (11) that are adapted to the groove (12) are fixedly connected on the U-shaped control frame (6). Both sliders (11) are slidably connected inside the groove (12).

7. The inlet and outlet flow control valve of a pumped storage power station according to claim 1, characterized in that: The frame (1) is fixedly connected to L-shaped mounting plates (13) on both the left and right sides. Each L-shaped mounting plate (13) has multiple mounting holes (14) and multiple reinforcing ribs (15) fixedly connected to each L-shaped mounting plate (13). The multiple reinforcing ribs (15) are evenly distributed on the L-shaped mounting plate (13).

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