A natural gas pipeline valve guard

Abstract

The utility model discloses a natural gas pipeline valve protection device belongs to valve protection technical field, including the valve body, the middle part rotationally connected with the valve stem of valve body upper surface, the outer surface fixedly connected with the valve stem of locating piece, the middle part fixedly connected with the locating assembly of valve stem upper surface, the outer surface of valve body is clamped and has the outer guard subassembly, through being provided with the locating assembly, by spring can support the both ends of pressure bar, make pressure bar and valve stem parallel state, make the plug rod in turn and insert to the inside of through groove and locating groove, can limit the position of valve stem and fix, avoid its self -occurring rotation, influence the accuracy of opening and closing, thereby can guarantee the accuracy of valve stem position, avoid the misoperation, influence valve body's performance, and the middle part rotationally connected of pressure bar and valve stem, can press the end of pressure bar, to make the plug rod away from locating groove, can realize the rotation of valve stem.

Description

Technical Field

[0001] This utility model relates to the field of valve protection technology, specifically a valve protection device for natural gas pipelines. Background Technology

[0002] During natural gas transmission, valves are installed on natural gas pipelines to control, cut off, and regulate the flow of gas within the pipeline. These valves are especially useful during maintenance, repairs, or emergencies, allowing for rapid shut-off of the gas supply to prevent leaks and accidents. To extend the service life of the valves and ensure their normal operation, valve protection devices are typically installed to resist environmental erosion such as dust, sand, and rainwater, while also preventing damage from human error and external impacts. These protective measures effectively improve the safety, stability, and operational efficiency of the pipeline system, making them an indispensable and important component of natural gas transmission projects.

[0003] An investigation revealed that a Chinese utility model patent discloses a natural gas pipeline valve protection device (publication number: CN221525755U), comprising a valve body and natural gas pipelines connected to both ends of the valve body. A protective cover is detachably installed on the valve body and the natural gas pipeline. The protective cover consists of a first shell and a second shell. Sliding grooves are provided inside the first shell and the second shell. A guide groove is provided on the second shell. A protective cover is rotatably installed in the sliding groove. An arc-shaped guide plate is provided on the protective cover and slides in the guide groove. A magnetic strip is provided on the protective cover. An adsorption groove is provided on the upper surface of the first shell, and the magnetic strip is located in the adsorption groove.

[0004] Although the aforementioned patent provides comprehensive protection for the valve body through the first housing, the second housing, and the protective cover slidably disposed within the sliding groove, preventing the valve body from being exposed to the external environment for a long time and from contact with wind, sand, and rainwater, thus blocking the corrosion of the valve body by wind, sand, and rainwater and ensuring the normal use of the valve body, if the pipeline vibrates or suffers external impact during valve operation, it is easy for the valve to shake, which may cause the valve stem to rotate on its own, thereby affecting the accuracy of its opening or closing.

[0005] Therefore, this utility model provides a natural gas pipeline valve protection device to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This utility model provides a natural gas pipeline valve protection device, which aims to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: including a valve body, a valve stem rotatably connected to the middle of the upper surface of the valve body, a positioning piece fixedly connected to the outer surface of the valve stem, a positioning component fixedly connected to the middle of the upper surface of the valve stem, and an outer protective component snapped onto the outer surface of the valve body;

[0010] The positioning component includes a first connecting block, the lower surface of which is fixedly connected to the middle of the upper surface of the valve stem. A second connecting block is rotatably connected inside the first connecting block. A pressure rod is fixedly connected to the upper surface of the second connecting block. Springs are fixedly connected to both sides of the lower surface of the pressure rod. Extension plates are fixedly connected to both sides of the outer surface of the pressure rod. A plug rod is fixedly connected to the lower surface of the extension plate.

[0011] As a preferred technical solution of this application, the upper surface of the positioning plate is provided with through grooves on both sides that are adapted to the insertion rod, and the upper surface of the valve body is provided with positioning grooves at the four corners that are adapted to the through grooves and the insertion rod.

[0012] As a preferred technical solution of this application, the outer protective assembly includes a first housing, the interior of the first housing is snapped onto one side of the outer surface of the valve body, a second housing overlaps the front surface of the first housing, and a clamping plate is fixedly connected to both sides of the first housing and the second housing, and the clamping plates provided on both sides of the first housing and the clamping plates provided on both sides of the second housing are connected by bolt threads.

[0013] As a preferred technical solution of this application, a first locking rod is fixedly connected to the upper surface of the first housing, a first semi-circular plate is locked to the outer surface of the first locking rod, a threaded bolt is fixedly connected to the upper surface of the first semi-circular plate, and a fastening nut is threadedly connected to the outer surface of the threaded bolt.

[0014] As a preferred technical solution of this application, a second locking rod is fixedly connected to the upper surface of the second housing, a second semi-circular plate is engaged with the outer surface of the second locking rod, a sealing cover is rotatably connected to the upper surface of the second semi-circular plate, and a hook adapted to a threaded bolt is fixedly connected to one side of the sealing cover.

[0015] As a preferred technical solution of this application, both sides of the valve body are connected to air pipes by fixing bolts, and the outer surface of the air pipes is snapped into the inside of the clamping plate.

[0016] (III) Beneficial Effects

[0017] The positioning assembly, with springs supporting both ends of the pressure rod, ensures it is parallel to the valve stem. This allows the insert rod to sequentially pass through the through groove and positioning groove, limiting and fixing the valve stem's position to prevent spontaneous rotation and maintain opening / closing accuracy. This ensures accurate valve stem positioning, avoids malfunctions, and prevents impacts on valve performance. Furthermore, the rotatable connection between the pressure rod and valve stem allows for pressing the end of the pressure rod to move the insert rod away from the positioning groove, enabling valve stem rotation for opening and closing the valve. This simple operation helps ensure efficient valve opening and closing. Attached Figure Description

[0018] Figure 1 A schematic diagram of a natural gas pipeline valve protection device;

[0019] Figure 2 This is a schematic diagram of the valve body in a natural gas pipeline valve protection device.

[0020] Figure 3 This is a schematic diagram of the pressure rod in a natural gas pipeline valve protection device.

[0021] Figure 4 This is a schematic diagram of the structure of the first housing in a natural gas pipeline valve protection device;

[0022] Figure 5 This is a schematic diagram of the sealing cover in a natural gas pipeline valve protection device.

[0023] In the picture:

[0024] 1. Valve body; 2. Valve stem; 3. Positioning plate; 4. First connecting block; 5. Second connecting block; 6. Pressure rod; 7. Spring; 8. Extension plate; 9. Insert rod; 10. First housing; 11. Second housing; 12. Clamping plate; 13. Bolt; 14. First clamping rod; 15. First semicircular plate; 16. Threaded bolt; 17. Fastening nut; 18. Second clamping rod; 19. Second semicircular plate; 20. Sealing cap; 21. Hook; 22. Fixing bolt; 23. Air pipe. Detailed Implementation

[0025] 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.

[0026] This utility model provides a natural gas pipeline valve protection device, such as... Figures 1-5As shown, a natural gas pipeline valve protection device includes a valve body 1, a valve stem 2 rotatably connected to the middle of the upper surface of the valve body 1, a positioning piece 3 fixedly connected to the outer surface of the valve stem 2, a positioning component fixedly connected to the middle of the upper surface of the valve stem 2, and an outer protection component snapped onto the outer surface of the valve body 1.

[0027] The positioning assembly includes a first connecting block 4, the lower surface of which is fixedly connected to the middle of the upper surface of the valve stem 2. A second connecting block 5 is rotatably connected inside the first connecting block 4. A pressure rod 6 is fixedly connected to the upper surface of the second connecting block 5. Springs 7 are fixedly connected to both sides of the lower surface of the pressure rod 6. Extension plates 8 are fixedly connected to both sides of the outer surface of the pressure rod 6. Insert rods 9 are fixedly connected to the lower surface of the extension plates 8. Through slots adapted to insert rods 9 are provided on both sides of the upper surface of the positioning plate 3. Positioning slots adapted to through slots and insert rods 9 are provided at the four corners of the upper surface of the valve body 1. The springs 7 can support both ends of the pressure rod 6, so that the pressure rod 6... The rod 6 is parallel to the valve stem 2, allowing the insert rod 9 to be inserted sequentially into the through groove and the positioning groove. This limits and fixes the position of the valve stem 2, preventing it from rotating on its own and affecting the accuracy of opening and closing. This ensures the accuracy of the valve stem 2's position and avoids malfunctions that could affect the performance of the valve body 1. Furthermore, the pressure rod 6 and the valve stem 2 are rotatably connected at the middle via the first connecting block 4 and the second connecting block 5. By pressing the end of the pressure rod 6, the other end is raised, which can drive the insert rod 9 away from the positioning groove, thereby rotating the valve stem 2 and opening and closing the valve body 1. This simple operation helps ensure the efficiency of opening and closing the valve body 1.

[0028] The outer protective assembly includes a first housing 10, the interior of which is snapped onto one side of the outer surface of the valve body 1. A second housing 11 overlaps the front surface of the first housing 10. Both sides of the first housing 10 and the second housing 11 are fixedly connected with clamping plates 12. The clamping plates 12 on both sides of the first housing 10 and the clamping plates 12 on both sides of the second housing 11 are threadedly connected by bolts 13. The clamping plates 12 on both sides can be connected by bolts 13, thereby connecting the first housing 10 and the second housing 11, so that the clamping plates 12 are snapped onto the outer surface of the air pipe 23. The first housing 10 and the second housing 11 are snapped onto the outer surface of the valve body 1 to protect its exterior from environmental erosion such as dust, sand, and rain.

[0029] A first locking rod 14 is fixedly connected to the upper surface of the first housing 10. A first semicircular plate 15 is engaged with the outer surface of the first locking rod 14. A threaded bolt 16 is fixedly connected to the upper surface of the first semicircular plate 15. A fastening nut 17 is threadedly connected to the outer surface of the threaded bolt 16. A second locking rod 18 is fixedly connected to the upper surface of the second housing 11. A second semicircular plate 19 is engaged with the outer surface of the second locking rod 18. A sealing cover 20 is rotatably connected to the upper surface of the second semicircular plate 19. A hook 21 adapted to the threaded bolt 16 is fixedly connected to one side of the sealing cover 20. The first locking rod 14 and the second locking rod 18 can... The semicircular plate 15 and the second semicircular plate 19 are connected to the first housing 10 and the second housing 11. This arrangement can separate the rotation operation area of ​​the valve stem 2 from the installation area of ​​the valve body 1, further improving the protection effect and preventing dust, sand and rain from corroding the valve body 1 during daily operation. The sealing cover 20 facilitates the operation of the valve stem 2. Then, the sealing cover 20 is rotated so that the hook 21 is engaged with the outer surface of the threaded bolt 16, and the fastening nut 17 is tightened to press and fix it, thereby fixing the position of the sealing cover 20 to seal and protect the valve stem 2.

[0030] Both sides of the valve body 1 are threadedly connected to air pipes 23 via fixing bolts 22, and the outer surface of the air pipes 23 is snapped into the inside of the clamping plate 12.

[0031] Working steps: First, the two side clamping plates 12 can be connected by bolts 13, thereby connecting the first housing 10 and the second housing 11, so that the clamping plates 12 are clamped to the outer surface of the air pipe 23, and the first housing 10 and the second housing 11 are clamped to the outer surface of the valve body 1 to protect its exterior. Next, the first clamping rod 14 and the second clamping rod 18 can connect the first semicircular plate 15 and the second semicircular plate 19 to the first housing 10 and the second housing 11. Then, by pressing the end of the pressure rod 6, so that... Its other end is raised, which can drive the insert rod 9 away from the positioning groove to realize the rotation of the valve stem 2. Secondly, the spring 7 can support both ends of the pressure rod 6, so that the pressure rod 6 and the valve stem 2 are parallel, so that the insert rod 9 is inserted into the through groove and the positioning groove in sequence, which can limit and fix the position of the valve stem 2. Finally, rotate the sealing cover 20 so that the hook 21 is engaged with the outer surface of the threaded bolt 16, and then tighten the fastening nut 17 to compress and fix it, which can fix the position of the sealing cover 20 to seal and protect the valve stem 2.

[0032] 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 protective device for a natural gas pipeline valve, comprising a valve body (1), characterized in that: A valve stem (2) is rotatably connected to the middle of the upper surface of the valve body (1), a positioning piece (3) is fixedly connected to the outer surface of the valve stem (2), a positioning component is fixedly connected to the middle of the upper surface of the valve stem (2), and an outer protective component is snapped onto the outer surface of the valve body (1). The positioning component includes a first connecting block (4), the lower surface of which is fixedly connected to the middle of the upper surface of the valve stem (2), a second connecting block (5) is rotatably connected inside the first connecting block (4), a pressure rod (6) is fixedly connected to the upper surface of the second connecting block (5), springs (7) are fixedly connected to both sides of the lower surface of the pressure rod (6), extension plates (8) are fixedly connected to both sides of the outer surface of the pressure rod (6), and a plug rod (9) is fixedly connected to the lower surface of the extension plate (8). The upper surface of the positioning piece (3) is provided with through grooves on both sides that are compatible with the insert rod (9), and the upper surface of the valve body (1) is provided with positioning grooves at the four corners that are compatible with the through grooves and the insert rod (9).

2. The natural gas pipeline valve protection device according to claim 1, characterized in that: The outer protective assembly includes a first housing (10), the interior of the first housing (10) is snapped onto one side of the outer surface of the valve body (1), and a second housing (11) overlaps the front surface of the first housing (10). Both sides of the first housing (10) and the second housing (11) are fixedly connected with clamping plates (12). The clamping plates (12) on both sides of the first housing (10) and the clamping plates (12) on both sides of the second housing (11) are threadedly connected by bolts (13).

3. A natural gas pipeline valve protection device according to claim 2, characterized in that: The upper surface of the first housing (10) is fixedly connected to a first locking rod (14), the outer surface of the first locking rod (14) is clamped to a first semi-circular plate (15), the upper surface of the first semi-circular plate (15) is fixedly connected to a threaded bolt (16), and the outer surface of the threaded bolt (16) is threadedly connected to a fastening nut (17).

4. A natural gas pipeline valve protection device according to claim 2, characterized in that: The upper surface of the second housing (11) is fixedly connected to a second locking rod (18), the outer surface of the second locking rod (18) is clamped to a second semi-circular plate (19), the upper surface of the second semi-circular plate (19) is rotatably connected to a sealing cover (20), and one side of the sealing cover (20) is fixedly connected to a hook (21) that is compatible with the threaded bolt (16).

5. A natural gas pipeline valve protection device according to claim 1, characterized in that: Both sides of the valve body (1) are threadedly connected to air pipes (23) by fixing bolts (22), and the outer surface of the air pipes (23) is snapped into the inside of the clamping plate (12).

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