Pressure control valve multi-point state indication detection controller

Abstract

The utility model relates to fluid control equipment technical field, concretely is a kind of pressure control valve multi-point state indication detection controller, including rack, rack is used to be connected with the valve core of pressure control valve, the setting direction of rack is parallel with the action direction of valve core, further including gear, gear is engaged with rack, gear center is fixedly connected with the shaft, the shaft is externally covered with the shaft sleeve, the shaft sleeve is used to be fixedly connected with the valve body inner wall of pressure control valve, the rotating joint of shaft and shaft sleeve, the valve body is connected with the handle pointer outside valve body and is penetrated by the one end of shaft. The functional characteristics of pressure control valve multi-point state indication detection controller are: it has the function of indicating observation or detection verification to the opening and closing state of pressure control valve valve core, using the mutual conversion of simple gear, rack and handle pointer structure, using driven indication and active control to realize two function effects of one structure.

Description

Technical Field

[0001] This utility model relates to the field of fluid control equipment technology, specifically a multi-point status indication and detection controller for a pressure control valve. Background Technology

[0002] In fluid transport pipelines used in petrochemical, urban construction, and energy conservation and environmental protection fields, pressure-controlled valves such as check valves, non-return valves, and one-way valves are commonly installed. These valves control the opening and closing of the valve core by fluid pressure. During long-term operation, these valves are continuously subjected to the dual effects of fluid pressure and corrosive media, making them prone to erosion and corrosion, leading to a gradual decline in their performance. If the valve core is damaged or stuck and cannot open or close in time, it will directly affect the normal operation of the pipeline system.

[0003] Because the opening and closing status of the valve core cannot be directly observed from the outside, malfunctions such as valves not closing tightly, not opening completely, or getting stuck are often difficult to detect in the first instance. Such hidden malfunctions not only disrupt normal production processes but may also cause problems such as media leakage, abnormal pressure, or backflow, and in severe cases, even lead to safety accidents, posing a threat to personnel and equipment.

[0004] Therefore, how to effectively monitor the working status of pressure control valves and diagnose faults in the early stages has become an important issue in ensuring the stable operation of pipeline systems and safe production. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a multi-point status indication and detection controller for pressure control valves.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A multi-point status indication and detection controller for a pressure control valve includes a rack for connecting to the valve core of the pressure control valve. The rack is set in a direction parallel to the movement direction of the valve core. The controller also includes a gear that meshes with the rack. A rotating shaft is fixedly connected to the center of the gear. A bushing is fitted around the rotating shaft and is fixedly connected to the inner wall of the valve body of the pressure control valve. The rotating shaft and the bushing are rotatably connected. One end of the rotating shaft extends through the valve body and is connected to a handle pointer outside the valve body.

[0008] The multi-point status indication and detection controller for pressure control valves features the ability to indicate and observe, or detect and verify, the opening and closing status of the pressure control valve spool. It utilizes a simple gear, rack, and handle pointer structure with mutual conversion, employing both passive indication and active control to achieve two functions within a single structure. Specifically, firstly, it provides passive indication: the opening and closing status of the pressure control valve spool causes the rack to move in different directions, which is then indicated by the handle pointer via the gear. Secondly, it provides active control: manipulating the handle pointer causes the gear to drive the rack, thus detecting and verifying the pressure control valve spool.

[0009] The handle pointer is equipped with an explosion-proof box, which is fixedly connected to the outer wall of the valve body of the pressure control valve. In order to facilitate observation of the direction of the handle pointer, a transparent window is provided on the explosion-proof box.

[0010] Oil seals are provided at both ends of the bushing. The oil seals rotate with the shaft and play a sealing role to prevent fluid leakage from the valve body.

[0011] An end cap is provided at one end of the bushing near the gear. The end cap rotates with the shaft, and can press the oil seal and prevent the shaft from moving axially.

[0012] The end cap is fixedly connected to a bracket, and the rack can slide along the surface of the bracket to provide support for the movement of the rack.

[0013] A nut is threaded onto the shaft. The nut is used to position the shaft between the handle pointer and the outer wall of the pressure control valve. The nut can position the shaft and prevent it from moving axially.

[0014] The beneficial effects achieved by this utility model are:

[0015] This utility model can indicate and observe the opening and closing status of the valve core inside the pressure control valve, thereby effectively monitoring the working status of the pressure control valve and diagnosing faults in the early stage, thus ensuring the stable operation of the pipeline system and safe production.

[0016] In this invention, the handle pointer is not only used as an indicator device, but also as a control device. By controlling the handle pointer, the valve core can be tested and verified. Attached Figure Description

[0017] 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:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model (top view under normal conditions).

[0019] Figure 2 yes Figure 1 The pointer status of the middle handle (first view);

[0020] Figure 3 This is a schematic diagram of the structure of this utility model (the rack moves to the right following the valve core);

[0021] Figure 4 yes Figure 3 The indication status of the pointer on the middle handle;

[0022] Figure 5 This is a schematic diagram of the structure of this utility model (the rack moves to the left following the valve core);

[0023] Figure 6 yes Figure 5 The indication status of the pointer on the middle handle;

[0024] Figure 7 This is an application scenario diagram (top view) of this utility model when applied to a check valve.

[0025] In the diagram: 1. Rack; 2. Gear; 3. Bracket; 4. End cap; 5. Shaft; 6. Bushing; 7. Oil seal; 8. Nut; 9. Explosion-proof box; 10. Transparent window; 11. Handle pointer; 12. Valve body; 13. A interface; 14. B interface; 15. Valve seat; 16. Valve core; 17. Support rod; 18. Guide ring. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] Example:

[0028] like Figures 1-7 As shown, a multi-point status indication and detection controller for a pressure control valve includes a rack 1. The rack 1 is used to connect to the valve core 16 of a pressure control valve in the prior art. The rack 1 is positioned parallel to the direction of movement of the valve core 16. The rack 1 can be fixedly connected to the valve core 16. In some cases, the valve core 16 rotates while moving linearly. In this case, the rack 1 can be connected to the valve core 16 through a cylindrical head, allowing the two to rotate relative to each other.

[0029] This utility model also includes a gear 2, which meshes with a rack 1. When the rack 1 moves with the valve core 16, it can drive the gear 2 to rotate. A rotating shaft 5 is fixedly connected to the center of the gear 2. A bushing 6 is sleeved on the outside of the rotating shaft 5. The bushing 6 is used to fixally connect to the inner wall of the valve body 12 of the existing pressure control valve. The rotating shaft 5 and the bushing 6 are rotatably connected. A through hole is opened on the valve body 12. One end of the rotating shaft 5 passes through the valve body 12 and is fixedly connected to a handle pointer 11 on the outside of the valve body 12. The handle pointer 11 has a pointer that can provide a clear direction.

[0030] The handle pointer 11 is externally equipped with an explosion-proof box 9, which is fixedly connected to the outer wall of the valve body 12 of the pressure control valve. The explosion-proof box 9 provides protection for the handle pointer 11. To facilitate observation of the direction of the handle pointer 11, a transparent window 10 is provided on the explosion-proof box 9, which can be made of explosion-proof glass.

[0031] Oil seals 7 are provided at both ends of the bushing 6. The oil seals 7 are rotatably engaged with the rotating shaft 5. The oil seals 7 play a sealing role to prevent fluid leakage inside the valve body 12.

[0032] The bushing 6 is provided with an end cover 4 near the gear 2. The end cover 4 is rotatably engaged with the rotating shaft 5. The end cover 4 can press the oil seal 7 and prevent the rotating shaft 5 from moving axially.

[0033] The end cap 4 is fixedly connected to the bracket 3, and the smooth surface of the rack 1 can slide along the surface of the bracket 3. The bracket 3 provides support for the movement of the rack 1.

[0034] A nut 8 is threaded onto the rotating shaft 5. The nut 8 is used to be positioned between the handle pointer 11 and the outer wall of the valve body 12 of the pressure control valve. The nut 8 can position the rotating shaft 5 and prevent the rotating shaft 5 from moving axially, and can also press the oil seal 7.

[0035] like Figure 7 As shown, the main structure of the existing one-way valve includes a valve body 12, with an A port 13 and a B port 14 at both ends of the valve body 12. A valve seat 15 is provided inside the valve body 12, and a valve core 16 that can block it is provided at the valve seat 15. The valve core 16 is connected to the valve stem, which can slide relative to the guide ring 18. A spring is provided between the valve core 16 and the guide ring 18. The guide ring 18 is annular and is fixedly supported by two support rods 17 fixed to the inner wall of the valve body 12.

[0036] When this utility model is specifically applied to the aforementioned one-way valve, it has two functions: 1) an indication function; and 2) a detection and verification function. Specifically:

[0037] 1) Indicator function:

[0038] When the valve core 16 is closed, the middle position of the rack 1 coincides with the gear 2, and the handle pointer 11 points to the text mark O (this mark can be manually set).

[0039] When the valve core 16 opens under high fluid pressure, the valve core 16 drives the rack 1 to move to the right. The gear 2 meshing with the rack 1 drives the rotating shaft 5 to start rotating. At the same time, the handle pointer 11 rotates with the rotating shaft 5 and points to the right. Figure 3 , Figure 4 (Perspective).

[0040] 2) Detection and verification function:

[0041] To test whether the valve core 16 opens and closes normally, rotate the handle pointer 11 to the right to check if the valve core 16 can open. Then release the handle pointer 11 and observe whether it automatically returns to the 0 position. If the handle pointer 11 points to the right, it means the valve core 16 opens normally; otherwise, it cannot open normally. If the handle pointer 11 automatically returns to the 0 position after being released, it means the valve core 16 closes normally; otherwise, it cannot close normally.

[0042] In practical applications, markings, such as scale lines or text markings, can be made inside the explosion-proof box 9 to more quickly identify the position of the handle pointer 11, thereby determining the state of the internal valve core 16.

[0043] In addition, such as Figure 5 , Figure 6 As shown, when some valve cores 16 are opened, they move to the left, and the handle pointer 11 will turn to the left accordingly.

Claims

1. A multi-point status indication and detection controller for a pressure control valve, characterized in that, It includes a rack (1) for connecting to the valve core (16) of the pressure control valve, and a gear (2) for meshing with the rack (1). A rotating shaft (5) is fixedly connected to the center of the gear (2). A bushing (6) is sleeved on the outside of the rotating shaft (5). The bushing (6) is fixedly connected to the inner wall of the valve body (12) of the pressure control valve. The rotating shaft (5) is rotatably connected to the bushing (6). One end of the rotating shaft (5) passes through the valve body (12) and is connected to the handle pointer (11) outside the valve body (12).

2. The pressure control valve multi-point status indication and detection controller according to claim 1, characterized in that, The handle pointer (11) is provided with an explosion-proof box (9) on the outside. The explosion-proof box (9) is fixedly connected to the outer wall of the valve body (12) of the pressure control valve. A transparent window (10) is provided on the explosion-proof box (9).

3. The pressure control valve multi-point status indication and detection controller according to claim 1, characterized in that, The bushing (6) is provided with oil seals (7) at both ends, and the oil seals (7) are rotatably engaged with the rotating shaft (5).

4. The pressure control valve multi-point status indication and detection controller according to claim 1 or 3, characterized in that, The bushing (6) is provided with an end cap (4) at one end near the gear (2), and the end cap (4) is rotatably engaged with the rotating shaft (5).

5. The pressure control valve multi-point status indication and detection controller according to claim 4, characterized in that, The end cap (4) is fixedly connected to a bracket (3), and the rack (1) can slide along the surface of the bracket (3).

6. The pressure control valve multi-point status indication and detection controller according to claim 1, characterized in that, A nut (8) is threaded onto the shaft (5). The nut (8) is used to be positioned between the handle pointer (11) and the outer wall of the valve body (12) of the pressure control valve.

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