A high-efficiency driving top drive hydraulic plug valve
By designing limiting and pressure relief structures, the problem of unexpected rotation of the valve core caused by torque and lateral force under high water pressure is solved, thus achieving stable operation and efficient opening and closing of the valve in high-pressure environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN RUISHENG PETROLEUM EQUIP CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-29
AI Technical Summary
Under high water pressure, the fluid generates torque and lateral force on the valve core, which may cause the valve core to rotate out of control due to vibration, water flow disturbance, or fluid impact, affecting the normal opening and closing of the valve.
The valve employs a limiting structure and a pressure relief structure. The limiting structure prevents the valve core from rotating axially by rigidly engaging with the limiting hole through the first screw. The pressure relief structure adjusts the position of the sealing plate through the second screw to balance the water pressure, thereby reducing rotational resistance and jamming.
It effectively prevents the valve core from rotating unexpectedly under high pressure, avoids media leakage and pipeline vibration, and improves opening and closing efficiency and operating feel.
Smart Images
Figure CN224301470U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plug valve technology, and in particular to a high-efficiency driven top-drive hydraulic plug valve. Background Technology
[0002] Valves are control components in fluid transport systems, with functions such as shut-off, regulation, flow guidance, backflow prevention, pressure stabilization, flow diversion, or overflow pressure relief. Plug valves, as a type of quick-opening straight-through valve, are widely used in fluid transport pipelines. A plug valve consists of a valve body and a plug, with the plug located inside the valve cavity of the valve body. The opening and closing of the plug valve is achieved by rotating the plug.
[0003] Upon investigation, a Chinese utility model patent (publication number: CN219317683U) discloses a top-driven hydraulic plug valve. Although the patent allows for convenient installation and fixation of the rubber sealing cylinder through the corresponding setting of the limiting fixing strip, limiting fixing groove, bottom mounting block, sealing gasket and limiting mounting flange, under high water pressure, the fluid will generate torque and lateral force on the valve core. The valve core may rotate unexpectedly and shift its position due to vibration, water flow disturbance and fluid impact. Utility Model Content
[0004] In view of the above-mentioned problems that under high water pressure, the fluid will generate torque and lateral force on the valve core, and the valve core may rotate unexpectedly and shift its position due to vibration, water flow disturbance, and fluid impact, this utility model is proposed.
[0005] Therefore, the purpose of this utility model is to provide a top-drive hydraulic plug valve with high efficiency. The purpose is that under high water pressure, the fluid will generate torque and lateral force on the valve core. The valve core may rotate unexpectedly and shift its position due to vibration, water flow disturbance, and fluid impact.
[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-efficiency driven top-drive hydraulic plug valve, including a valve body structure, a limiting structure, and a pressure relief structure. The limiting structure is installed inside the valve body structure, and the pressure relief structure is installed outside the valve body structure. The limiting structure includes a valve core, a connecting rod, and a fixing box. The valve core is disposed inside the housing. The valve core is connected to a handle and a fixing post via the connecting rod. The valve core is provided with a water flow groove. The fixing post is provided with limiting holes at equal intervals. The fixing box is threaded with a first screw that matches the limiting holes.
[0007] As a preferred embodiment of the high-efficiency driven top-drive hydraulic plug valve of this utility model, the valve body structure includes a housing and a connecting pipe, the connecting pipe is fixedly connected to both ends of the housing, and a flange is fixedly installed on the outer wall of the end of the connecting pipe away from the housing.
[0008] In a preferred embodiment of the high-efficiency driven top-drive hydraulic plug valve of this utility model, the connecting rod is fixedly installed at the top of the valve core, the connecting rod extends through the top wall of the housing to the top of the housing, and the connecting rod and the top wall of the housing are rotatably connected, and the handle is fixedly installed at the top of the connecting rod.
[0009] In a preferred embodiment of the high-efficiency driven top-drive hydraulic plug valve of this utility model, the fixed column is fixedly installed at the upper end of the connecting rod, the fixed box is fixedly installed at the top of the housing, and a turntable is fixedly installed at one end of the first screw.
[0010] As a preferred embodiment of the high-efficiency driven top-drive hydraulic plug valve of this utility model, the pressure relief structure includes a pressure relief pipe, a pressure relief box, and a second screw. The two ends of the pressure relief pipe are respectively fixedly connected to a connecting pipe, and the pressure relief box is fixedly installed on the pressure relief pipe. The pressure relief pipe and the pressure relief box are interconnected.
[0011] In a preferred embodiment of the high-efficiency driven top-drive hydraulic plug valve of this utility model, the second screw is threadedly installed on the top of the pressure relief box, a mounting plate is rotatably installed on the bottom end of the second screw, a sealing plate is fixedly installed on the bottom of the mounting plate, and a turntable is fixedly installed on the end of the second screw away from the mounting plate.
[0012] The beneficial effects of this utility model are:
[0013] 1. Through the setting of the limiting structure, when the front end of the first screw extends into the limiting hole set on the fixed column, a rigid engagement connection is formed between the screw and the limiting hole, which physically blocks the axial rotation of the fixed column. It is suitable for application scenarios where the valve is in a high-pressure and high-flow-rate working environment. When there is a strong fluid impact force in the pipeline, it can effectively prevent the valve core from being passively rotated by the torque generated by the liquid, avoid the valve from being opened or closed accidentally, and avoid serious consequences such as medium leakage and pipeline vibration caused by the accidental rotation of the valve core.
[0014] 2. Through the pressure relief structure, the second screw moves threadedly in the pressure relief box, causing the mounting plate to move the sealing plate upward, so that the two ends of the pressure relief pipe are connected, the original high pressure difference is significantly reduced, and the water pressure on both sides of the valve core tends to be balanced. At this time, the valve core can be rotated by the operating handle, which can significantly reduce the rotation resistance, avoid jamming, and improve the opening and closing efficiency and operation feel. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a cross-sectional view of the present invention;
[0018] Figure 3 This is a schematic diagram of the valve core of this utility model;
[0019] Figure 4 This is a schematic diagram of the pressure relief structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the sealing plate of this utility model.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. Valve body structure; 11. Shell; 12. Connecting pipe; 13. Flange; 2. Limiting structure; 21. Valve core; 22. Connecting rod; 23. Handle; 24. Water channel; 25. Fixing column; 26. Limiting hole; 27. Fixing box; 28. First screw; 3. Pressure relief structure; 31. Pressure relief pipe; 32. Pressure relief box; 33. Second screw; 34. Mounting plate; 35. Sealing plate. Detailed Implementation
[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example
[0024] Refer to attached figure Figure 1 - Appendix Figure 3 This is the first embodiment of the present invention, which provides a high-efficiency driven top-drive hydraulic plug valve, including a valve body structure 1, a limiting structure 2, and a pressure relief structure 3. The limiting structure 2 is installed inside the valve body structure 1, and the pressure relief structure 3 is installed outside the valve body structure 1. The valve body structure 1 includes a housing 11 and a connecting pipe 12. There are two connecting pipes 12, which are fixedly connected to both ends of the housing 11, and the housing 11 and the connecting pipe 12 are internally interconnected. A flange 13 is fixedly installed on the outer wall of the end of the connecting pipe 12 away from the housing 11.
[0025] The limiting structure 2 includes a valve core 21, a connecting rod 22, and a fixing box 27. The valve core 21 is located inside the housing 11. The connecting rod 22 is fixedly installed on the top of the valve core 21. The connecting rod 22 extends through the top wall of the housing 11 to the top of the housing 11 and is rotatably connected to the top wall of the housing 11. A water channel 24 is provided on the valve core 21. A handle 23 is fixedly installed on the top of the connecting rod 22. A fixing post 25 is fixedly installed at the upper end of the connecting rod 22. Limiting holes 26 are provided at equal intervals on the fixing post 25. The fixing box 27 is fixedly installed on the top of the housing 11 and covers the fixing post 25. A first screw 28 is threaded on the side wall of the fixing box 27. The first screw 28 and the limiting holes 26 cooperate with each other. A turntable is fixedly installed at one end of the first screw 28.
[0026] During use, the pipe is connected via flange 13. When needed, the turntable is rotated, which drives the first screw 28 to rotate. The first screw 28 moves threadedly in the fixed box 27, causing it to disengage from the limiting hole 26. Then, the handle 23 is rotated, which drives the connecting rod 22 to rotate. The connecting rod 22 drives the valve core 21 and the fixed column 25 to rotate respectively. When the handle 23 is rotated 90°, the water channel 24 rotates between the connecting pipe 12, making the connecting pipe 12 connected. The limiting hole 26 is aligned with the first screw 28. Rotating the first screw 28 causes it to extend into the limiting hole 26, thereby limiting the fixed column 25 and preventing the connecting rod 22 from rotating. Water flows from one side of the connecting pipe 12 through the water channel 24 to the other end. By limiting the connecting rod 22, the valve core 21 is fixed inside the housing 11, and the valve core 21 will not rotate automatically under high water pressure. Example
[0027] Refer to attached figure Figure 4 and attached Figure 5 This is the second embodiment of the present invention, which differs from the first embodiment in that:
[0028] The pressure relief structure 3 includes a pressure relief pipe 31, a pressure relief box 32, and a second screw 33. The two ends of the pressure relief pipe 31 are fixedly connected to the connecting pipe 12, respectively. The pressure relief box 32 is fixedly installed on the pressure relief pipe 31, and the pressure relief pipe 31 and the pressure relief box 32 are internally interconnected. The second screw 33 is threadedly installed on the top of the pressure relief box 32. The bottom end of the second screw 33 is rotatably installed with a mounting plate 34. The bottom of the mounting plate 34 is fixedly installed with a sealing plate 35. The mounting plate 34 and the sealing plate 35 seal the pressure relief pipe 31. A turntable is fixedly installed on the end of the second screw 33 away from the mounting plate 34.
[0029] During use, when water needs to be released, the water pressure on one side of the valve core 21 is high, while the pressure on the other side is low, making it difficult to rotate the valve core 21. At this time, the second screw 33 is rotated, and the second screw 33 moves threadedly in the pressure relief box 32, causing the mounting plate 34 to move the sealing plate 35 upward, so that the two ends of the pressure relief pipe 31 are connected. Water will first flow from the pressure relief pipe 31 into the connecting pipe 12 on the other side, thereby releasing some water pressure, reducing the water pressure on the valve core 21, and making it easier to rotate the valve core 21.
[0030] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A high-efficiency driven top-drive hydraulic plug valve, characterized in that: The valve body includes a valve body structure (1), a limiting structure (2), and a pressure relief structure (3). The limiting structure (2) is installed inside the valve body structure (1), and the pressure relief structure (3) is installed outside the valve body structure (1). The limiting structure (2) includes a valve core (21), a connecting rod (22), and a fixing box (27). The valve core (21) is located inside the housing (11). The valve core (21) is connected to a handle (23) and a fixing post (25) via the connecting rod (22). The valve core (21) is provided with a water channel (24). The fixing post (25) is provided with limiting holes (26) at equal intervals. The fixing box (27) is threaded with a first screw (28) that matches the limiting holes (26).
2. The high-efficiency driven top-drive hydraulic plug valve according to claim 1, characterized in that: The valve body structure (1) includes a housing (11) and a connecting pipe (12). The connecting pipe (12) is fixedly connected to both ends of the housing (11), and a flange (13) is fixedly installed on the outer wall of the end of the connecting pipe (12) away from the housing (11).
3. The high-efficiency driven top-drive hydraulic plug valve according to claim 1, characterized in that: The connecting rod (22) is fixedly installed on the top of the valve core (21). The connecting rod (22) extends through the top wall of the housing (11) to the top of the housing (11), and the connecting rod (22) and the top wall of the housing (11) are rotatably connected. The handle (23) is fixedly installed on the top of the connecting rod (22).
4. The high-efficiency driven top-drive hydraulic plug valve according to claim 3, characterized in that: The fixing column (25) is fixedly installed at the upper end of the connecting rod (22), the fixing box (27) is fixedly installed at the top of the housing (11), and the turntable is fixedly installed at one end of the first screw (28).
5. The high-efficiency driven top-drive hydraulic plug valve according to claim 1, characterized in that: The pressure relief structure (3) includes a pressure relief pipe (31), a pressure relief box (32), and a second screw (33). The two ends of the pressure relief pipe (31) are fixedly connected to the connecting pipe (12), and the pressure relief box (32) is fixedly installed on the pressure relief pipe (31). The pressure relief pipe (31) and the pressure relief box (32) are interconnected.
6. The high-efficiency driven top-drive hydraulic plug valve according to claim 5, characterized in that: The second screw (33) is threadedly installed on the top of the pressure relief box (32), and the bottom end of the second screw (33) is rotatably installed with the mounting plate (34). The bottom of the mounting plate (34) is fixedly installed with the sealing plate (35), and the end of the second screw (33) away from the mounting plate (34) is fixedly installed with the turntable.