Valve anti-pinch device and pipe structure

Abstract

This utility model belongs to the technical field of nuclear power plant maintenance safety equipment, and discloses a valve anti-accidental contact device and pipeline structure. The valve anti-accidental contact device is used in conjunction with valves and pipelines. The valve handle rotates relative to the pipeline, having a first position and a second position. When the handle is in the first position, the extension direction of the handle is parallel to the extension direction of the pipeline; when the handle is in the second position, the extension direction of the handle is perpendicular to the extension direction of the pipeline. The valve anti-accidental contact device includes a limiting rod and a connecting seat. The limiting rod is mounted on the connecting seat, which is detachably connected to the handle. The limiting rod abuts against the side wall of the pipeline to restrict the rotation of the handle relative to the pipeline. The connecting seat has multiple first limiting parts. When the handle is in the first position, the limiting rod can selectively connect to one of the multiple first limiting parts. The first limiting part is used to restrict the movement of the limiting rod along the direction of handle rotation. This single-line valve anti-accidental contact device is suitable for valves installed on pipelines of different diameters, and has strong versatility.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant maintenance safety equipment technology, and in particular to a valve anti-accidental collision device and pipeline structure. Background Technology

[0002] Valves mainly consist of components such as the valve body, valve cover, handle, and valve seat. Common valves include ball valves, gate valves, and globe valves. In industrial applications, during normal operation of system equipment, accidental contact with a valve can lead to unexpected changes in its state, causing equipment damage, personal injury, or significant economic losses. In nuclear power plants, it can even affect nuclear safety. Developing effective anti-accidental contact devices for valves at risk of accidental contact is crucial for improving system reliability and reducing accidents caused by human error.

[0003] In the prior art, an anti-accidental contact device for a nuclear power plant gas supply valve is provided by setting a base on the installation pipeline of the gas supply valve and setting a limiting member on the base. By setting the limiting member on the first side of the valve handle, the handle is restricted from rotating in the direction closer to the first side of the handle, thereby achieving the function of preventing accidental contact.

[0004] However, the device requires a base to be installed on a pipe, and the pipe diameter may affect the installation and use of the device, making it less versatile. Utility Model Content

[0005] The purpose of this utility model is to provide a valve anti-accidental contact device and pipeline structure. This valve anti-accidental contact device can adapt to pipelines of different diameters and prevent valves on the pipeline from being accidentally touched and changing their state. It has strong versatility.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, a valve anti-accidental contact device is provided. This device is used in conjunction with a valve and a pipeline. The valve is installed on the pipeline, and the valve handle can rotate relative to the pipeline to have a first position and a second position. When the handle is in the first position, the extension direction of the handle is parallel to the extension direction of the pipeline. When the handle is in the second position, the extension direction of the handle is perpendicular to the extension direction of the pipeline. The valve anti-accidental contact device includes a limiting rod and a connecting seat. The limiting rod is installed on the connecting seat, and the connecting seat is used to detachably connect to the handle. The limiting rod is used to abut against the side wall of the pipeline to restrict the rotation of the handle relative to the pipeline. The connecting seat is provided with a plurality of first limiting parts. When the handle is in the first position, the limiting rod can be selectively connected to one of the plurality of first limiting parts. The first limiting part is used to restrict the movement of the limiting rod along the direction of rotation of the handle.

[0008] Preferably, the connecting seat is also provided with a through groove, the first limiting part is a first limiting groove, a plurality of first limiting grooves are arranged at intervals and all are connected to the through groove, and the limiting rod can move in the through groove and enter any one of the first limiting grooves.

[0009] Preferably, the through groove has an opening that communicates with the outside, and the limiting rod can enter or leave the through groove through the opening.

[0010] Preferably, the connecting seat is provided with multiple locking holes, and each first limiting part is provided with locking holes on both sides. The valve anti-accidental contact device also includes an isolation lock, which can pass through the locking holes on both sides of the first limiting part that cooperate with the limiting rod in sequence, and lock the relative position of the limiting rod and the connecting seat.

[0011] Preferably, the connecting seat is also provided with a second limiting part. When the handle is in the second position, the limiting rod is connected to the second limiting part, and the second limiting part is used to restrict the movement of the limiting rod in the direction of handle rotation.

[0012] Preferably, the second limiting part is a through groove.

[0013] Preferably, the connecting seat includes a sliding sleeve for slidably fitting onto the handle, and the valve anti-accidental contact device also includes a locking element for locking or unlocking the relative positions of the sliding sleeve and the handle.

[0014] Preferably, the locking element is a bolt, which is threadedly connected to the sliding sleeve, and the locking element is used to press against the handle or separate from the handle.

[0015] Preferably, the valve anti-accidental contact device includes multiple connecting seats, all of which are used for detachable connection with the handle.

[0016] On the other hand, a pipeline structure is provided, which includes a pipe, a valve, and a valve anti-accidental contact device according to any of the above technical solutions, wherein the valve is provided with a rotatable handle.

[0017] The beneficial effects of this utility model are as follows: It provides a valve anti-accidental contact device and pipeline structure. The limiting rod of the single-line valve anti-accidental contact device is selectively connected to one of multiple first limiting parts, so that the limiting rod can abut against pipes of different diameters, thereby preventing valves installed on pipes of different diameters from being accidentally contacted, and has strong versatility. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the valve anti-accidental contact device provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the connection seat of the valve anti-accidental contact device provided by this utility model;

[0020] Figure 3This is a schematic diagram of the pipeline structure when the handle is in the first position according to this utility model;

[0021] Figure 4 This is a schematic diagram of the pipeline structure when the handle is in the second position according to this utility model.

[0022] In the diagram: 1. Limiting rod;

[0023] 2. Connecting seat; 21. First limiting part; 22. Through groove; 23. Locking hole; 24. Sliding sleeve; 25. Opening;

[0024] 3. Isolation lock; 4. Locking element; 5. Pipe; 6. Handle. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0029] On the one hand, please refer to Figures 1 to 4 This embodiment provides a valve anti-accidental contact device, which is used in conjunction with a valve and a pipeline 5. The valve is installed on the pipeline 5, and the valve handle 6 can rotate relative to the pipeline 5 to have a first position and a second position. When the handle 6 is in the first position, the extension direction of the handle 6 is parallel to the extension direction of the pipeline 5 (e.g., ...). Figure 3 As shown), when handle 6 is in the second position, the extension direction of handle 6 is perpendicular to the extension direction of pipe 5 (as shown). Figure 4 (As shown) The valve anti-accidental contact device includes a limiting rod 1 and a connecting seat 2. The limiting rod 1 is mounted on the connecting seat 2, which is detachably connected to the handle 6. The limiting rod 1 abuts against the side wall of the pipe 5 to restrict the rotation of the handle 6 relative to the pipe 5. The connecting seat 2 is provided with multiple first limiting parts 21. When the handle 6 is in the first position, the limiting rod 1 can be selectively connected to one of the multiple first limiting parts 21. The first limiting part 21 is used to restrict the movement of the limiting rod 1 in the direction of rotation of the handle 6. With this configuration, when the handle 6 is in the first position, the operator can select a first limiting part 21 close to the pipe 5 to cooperate with the limiting rod 1 according to the pipe diameter of the pipe 5, so that the limiting rod 1 can abut against pipes 5 with different diameters, thereby preventing the valve handle 6 installed on pipes 5 with different diameters from being accidentally contacted, thus providing strong versatility.

[0030] Alternatively, please refer to Figure 2 and Figure 3 The connecting seat 2 is also provided with a through groove 22, and the first limiting part 21 is a first limiting groove. Multiple first limiting grooves are arranged at intervals and are all connected to the through groove 22. The limiting rod 1 can move in the through groove 22 and enter any one of the first limiting grooves. With this configuration, the operator only needs to put the limiting rod 1 into the through groove 22 and move the limiting rod 1 to the nearest first limiting groove according to the actual position of the handle 6 to achieve quick positioning and fixing of the handle 6. There is no need for complicated adjustment and alignment operations, which improves work efficiency.

[0031] In other embodiments, the first limiting part 21 may also be a threaded hole, with multiple threaded holes spaced apart, and the limiting rod 1 is a bolt, which is threadedly connected to one of the multiple threaded holes.

[0032] Optionally, the through groove 22 is provided with an opening 25 communicating with the outside, through which the limiting rod 1 can enter or exit the through groove 22. With this configuration, when it is necessary to adjust the fixed position of the handle 6 or replace components such as the limiting rod 1, since the limiting rod 1 can move freely in the through groove 22, the operator can easily remove the limiting rod 1 from the original first limiting groove through the opening 25 for corresponding adjustments or replacements, without having to disassemble the entire connecting seat 2 or other components, thus facilitating the maintenance and upkeep of the device.

[0033] Alternatively, please refer to Figure 3 The connecting seat 2 is provided with multiple locking holes 23, and each first limiting part 21 has locking holes 23 on both sides. The valve anti-accidental contact device also includes an isolation lock 3. The isolation lock 3 can pass through the locking holes 23 on both sides of the first limiting part 21 that cooperates with the limiting rod 1, and lock the relative position of the limiting rod 1 and the connecting seat 2. In this way, the isolation lock 3 locks the relative position of the limiting rod 1 and the connecting seat 2, which can prevent the limiting rod 1 from coming out of the first limiting groove due to external force, ensure the stability of the handle 6 in the first position, and avoid safety accidents caused by valve accidental contact. At the same time, this valve anti-accidental contact device takes into account the functions of valve anti-accidental contact and isolation maintenance. The operator can only unlock the isolation lock 3 with the corresponding key, and then move the limiting rod 1 to adjust the position of the handle 6. This adds extra safety protection to the operation of the valve and prevents malicious or accidental operation.

[0034] Alternatively, please refer to Figure 1 and Figure 4 The connecting seat 2 includes a sliding sleeve 24, which is slidably fitted onto the handle 6. The valve anti-accidental contact device also includes a locking element 4, which is used to lock or unlock the relative position of the sliding sleeve 24 and the handle 6. This configuration, through the slidable design of the sliding sleeve 24, allows adjustment of the position of the sliding sleeve 24 on the handle 6, enabling the valve anti-accidental contact device to adapt to various sizes and types of valve handles 6. This improves the versatility of the device and reduces the cost and time required for custom-made devices due to different valve models.

[0035] Preferably, please refer to Figure 1 The locking element 4 is a bolt, which is threadedly connected to the sliding sleeve 24. The locking element 4 is used to abut against the handle 6 or to separate from the handle 6. With this configuration, when installing the valve anti-accidental contact device, the operator can quickly place the sliding sleeve 24 onto the handle 6 and then tighten the bolt, so that the bolt's abutting surface abuts against the handle 6, completing the locking operation. For disassembly, the bolt is unscrewed in the opposite direction, separating the bolt's abutting surface from the handle 6, thereby sliding the sliding sleeve 24 off the handle 6, facilitating the installation and disassembly of the connecting seat 2 and improving work efficiency. In other embodiments, the locking element 4 can also be a pin.

[0036] Specifically, please refer to Figure 4The connecting seat 2 is also provided with a second limiting part. When the handle 6 is in the second position, the limiting rod 1 is connected to the second limiting part, which is used to limit the movement of the limiting rod 1 in the direction of rotation of the handle 6. By adjusting the position of the sliding sleeve 24 on the handle 6, it is ensured that the limiting rod 1 connected to the second limiting part of the connecting seat 2 can abut against the pipeline 5, thereby limiting the rotation of the valve handle 6.

[0037] Optionally, the second limiting part is a through groove 22. With this configuration, when the handle 6 is in the second position, the through groove 22 can also cooperate with the limiting rod 1 to restrict the rotation of the valve handle 6, which helps to simplify the structure.

[0038] Optionally, the valve anti-accidental contact device includes multiple connecting seats 2, each of which is detachably connected to the handle 6. This arrangement, through the design of multiple connecting seats 2, ensures the stability of the relative position between the limit rod 1 and the valve handle 6.

[0039] On the other hand, please refer to Figure 3 and Figure 4 This embodiment provides a pipeline structure including a pipe 5, a valve, and the aforementioned valve anti-accidental contact device. The valve is equipped with a rotatable handle 6. With this configuration, the handle 6 can rotate relative to the pipe 5 to have a first position and a second position. The valve anti-accidental contact device can achieve the anti-accidental contact function in both cases, regardless of the valve size, the pipe diameter of the pipe 5, and the position of the handle 6. The pipeline structure is safe and reliable.

[0040] Please refer to Figure 3 When handle 6 is in the first position, the working principle of the valve anti-accidental contact device is as follows:

[0041] When installing the valve anti-accidental contact device, slide the sleeve 24 onto the valve handle 6, adjust the position of the sleeve 24 on the handle 6, and then tighten the bolt so that the bolt's abutting surface is pressed against the outer surface of the handle 6 to lock the relative position of the sleeve 24 and the handle 6. Next, insert the limiting rod 1 into the through groove 22 through the opening 25, so that the limiting rod 1 enters the through groove 22 through the opening 25. According to the pipe diameter of the pipe 5, move the limiting rod 1 to the first limiting groove closest to the pipe 5. Finally, pass the isolation lock 3 through the locking holes 23 on both sides of the first limiting groove to lock the relative position of the limiting rod 1 and the connecting seat 2. At this time, the limiting rod 1 abuts against the side wall of the pipe 5, restricting the rotation of the handle 6 relative to the pipe 5 and preventing the handle 6 from accidentally rotating from the first position to the second position.

[0042] When disassembling the valve anti-accidental contact device, first pull the isolation lock 3 out of the locking hole 23 to release the lock on the relative position of the limit rod 1 and the connecting seat 2. Then, move the limit rod 1 out of the first limit groove and out through the opening 25 of the through groove 22. Next, unscrew the bolt in the opposite direction to separate the bolt's abutting surface from the handle 6, releasing the relative position lock of the sliding sleeve 24 and the handle 6. Finally, slide the sliding sleeve 24 off the handle 6 to complete the disassembly of the entire device.

[0043] Please refer to Figure 4 When handle 6 is in the second position, the valve anti-accidental contact device works as follows:

[0044] When installing the valve anti-accidental contact device, first, slide the sleeve 24 onto the valve handle 6. Then, insert the limiting rod 1 into the through groove 22 through the opening 25, allowing the limiting rod 1 to enter the through groove 22 from the opening 25. Lock the relative position of the limiting rod 1 and the connecting seat 2 using the isolation lock 3. Next, abut the limiting rod 1 against the side wall of the pipe 5, restricting the rotation of the handle 6 relative to the pipe 5. Finally, tighten the bolt so that the bolt's abutting surface presses against the outer surface of the handle 6, locking the relative position of the sleeve 24 and the handle 6 and preventing the handle 6 from accidentally rotating from the second position to the first position.

[0045] When disassembling the valve anti-accidental contact device, first pull the isolation lock 3 out of the locking hole 23 to release the lock on the relative position of the limit rod 1 and the connecting seat 2. Then, move the limit rod 1 out of the through groove 22 through the opening 25 of the through groove 22. Next, unscrew the bolt in the opposite direction to separate the bolt's abutting surface from the handle 6, releasing the relative position lock of the sliding sleeve 24 and the handle 6. Finally, slide the sliding sleeve 24 off the handle 6 to complete the disassembly of the entire device.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A valve anti-accidental contact device, used in conjunction with a valve and a pipeline (5), wherein the valve is installed on the pipeline (5), and the valve handle (6) is rotatable relative to the pipeline (5) to have a first position and a second position, wherein when the handle (6) is in the first position, the extension direction of the handle (6) is parallel to the extension direction of the pipeline (5), and when the handle (6) is in the second position, the extension direction of the handle (6) is perpendicular to the extension direction of the pipeline (5); the valve anti-accidental contact device includes a limiting rod (1) and a connecting seat (2), wherein the limiting rod (1) is installed on the connecting seat (2), the connecting seat (2) is used to detachably connect to the handle (6), and the limiting rod (1) is used to abut against the side wall of the pipeline (5) to restrict the rotation of the handle (6) relative to the pipeline (5), characterized in that, The connecting seat (2) is provided with a plurality of first limiting parts (21). When the handle (6) is in the first position, the limiting rod (1) can be connected to one of the plurality of first limiting parts (21). The first limiting part (21) is used to restrict the limiting rod (1) from moving in the direction of rotation of the handle (6).

2. The valve chafe device of claim 1, wherein The connecting seat (2) is also provided with a through groove (22), the first limiting part (21) is a first limiting groove, a plurality of first limiting grooves are spaced apart and all communicate with the through groove (22), and the limiting rod (1) can move in the through groove (22) and enter any one of the first limiting grooves.

3. The valve chafe device of claim 2, wherein, The through groove (22) is provided with an opening (25) communicating with the outside, and the limiting rod (1) can enter or leave the through groove (22) through the opening (25).

4. The valve chafe device of claim 3, wherein The connecting seat (2) is provided with a plurality of locking holes (23), and each of the first limiting parts (21) is provided with the locking holes (23) on both sides. The valve anti-accidental contact device also includes an isolation lock (3). The isolation lock (3) can pass through the locking holes (23) on both sides of the first limiting part (21) that cooperate with the limiting rod (1) in sequence, and lock the relative position of the limiting rod (1) and the connecting seat (2).

5. The valve chafe device of claim 1, wherein, The connecting seat (2) is also provided with a second limiting part. When the handle (6) is in the second position, the limiting rod (1) is connected to the second limiting part. The second limiting part is used to restrict the movement of the limiting rod (1) in the direction of rotation of the handle (6).

6. The valve chafe device of claim 5, wherein, The second limiting part is a through groove (22).

7. The valve chafe device according to any one of claims 1 to 6, characterized in that The connecting seat (2) includes a sliding sleeve (24) for slidably fitting onto the handle (6). The valve anti-accidental contact device also includes a locking member (4) for locking or unlocking the relative position of the sliding sleeve (24) and the handle (6).

8. The valve chafe device of claim 7, wherein, The locking element (4) is a bolt, which is threadedly connected to the sliding sleeve (24), and the locking element (4) is used to abut against the handle (6) or separate from the handle (6).

9. The valve chafe device of claim 8, wherein, The valve anti-accidental contact device includes multiple connecting seats (2), each of which is used for detachable connection with the handle (6).

10. A pipe structure, characterized by The pipeline structure includes a pipe (5), a valve, and a valve anti-accidental contact device as described in any one of claims 1-9, wherein the valve is provided with a rotatable handle (6).

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