High-pressure sealing element for natural gas valve

Abstract

The utility model relates to the technical field of sealing elements, and discloses a high-pressure sealing element for a natural gas valve, which comprises a connecting assembly, the connecting assembly is used for quick assembly and disassembly, the connecting assembly comprises a valve pipe, a natural gas pipe, a first connecting disc, a second connecting disc and a movable rod, the end of the natural gas pipe is fixedly connected with the second connecting disc, the first connecting disc is elastically connected with the movable rod, the end of the movable rod is connected with the second connecting disc in a clamped mode, and the first connecting disc is tightly connected with the second connecting disc. The first connecting disc and the second connecting disc are installed and separated rapidly, through the convex arrangement of the first sealing ring and the concave arrangement of the second sealing ring, tight attachment of multiple wall faces of the first sealing ring and the second sealing ring is achieved, multi-layer sealing limitation is achieved, and the sealing effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of sealing technology, specifically, it relates to a high-pressure sealing component for natural gas valves. Background Technology

[0002] Seals are materials or parts used to prevent fluids or solid particles from leaking between adjacent mating surfaces and to prevent external impurities such as dust and moisture from entering the interior of machinery and equipment. Natural gas pipelines are the only way to transport large quantities of natural gas on land. Natural gas pipelines account for about half of the world's total pipeline length. When laying natural gas pipelines, the connection between the pipeline and valves is a crucial step. If problems occur in the connection, it will be very difficult to remedy the situation after gas supply begins.

[0003] A search revealed a pipeline sealing device for natural gas pipelines in publication number (CN209604715U). This pipeline sealing device, on the one hand, uses a sealing ring that engages with a groove inside the pipeline body via a retaining ring, effectively preventing the sealing ring from shifting due to external forces, thus avoiding poor pipeline sealing and natural gas leakage. This effectively enhances the device's fixing and sealing effects, and strengthens its safety protection. On the other hand, the device uses a first sealing gasket, a second sealing gasket, and a third sealing gasket, providing triple sealing for an even better sealing effect.

[0004] The existing natural gas pipelines and valves are all fastened with flanges and bolts, which increases the workload of workers and seriously affects the efficiency of pipeline laying. In addition, when valves need to be replaced, the disassembly time and process are long, which affects work efficiency.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To solve the technical problem of loading and unloading valves and pipelines, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A high-pressure seal for a natural gas valve includes a connecting assembly for quick installation and removal. The connecting assembly includes a valve pipe, a natural gas pipe, a first connecting plate, a second connecting plate, and a movable rod. The end of the valve pipe is fixedly connected to the first connecting plate, and the end of the natural gas pipe is fixedly connected to the second connecting plate. The movable rod is elastically connected to the first connecting plate, and the end of the movable rod engages with the second connecting plate, with a tight connection between the first and second connecting plates. The movable rods are arranged in an array on the first connecting plate, and each movable rod is movably connected to a corresponding first connecting plate. A limit plate is fixedly connected to the end of each movable rod. A snap-fit ​​block is fixedly connected to each movable rod, and the snap-fit ​​block abuts against the second connecting plate. The second connecting plate has an array of through holes, each with the same size as the corresponding snap-fit ​​block. A spring is sleeved on each movable rod, and the end of each spring is fixedly connected to the corresponding first connecting plate and the limit plate. An air cylinder is arranged around the first connecting plate, and each air cylinder is fixedly connected to a valve. Each air cylinder is connected to a piston rod via a piston, and each air cylinder and valve are fixedly connected to the first connecting plate.

[0008] In a preferred embodiment of this utility model, the bottom of the limiting plate is provided with an arc-shaped groove, and the corresponding piston rod end slides between the arc-shaped groove.

[0009] In a preferred embodiment of this utility model, a first sealing ring is fixedly connected inside the first connecting plate, and a second sealing ring is fixedly connected inside the second connecting plate. The first sealing ring is convex, and the second sealing ring is concave, and the first sealing ring and the second sealing ring are tightly fitted together.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] 1. A high-pressure sealing element for a natural gas valve, wherein the components within the connecting assembly cooperate with each other to achieve rapid installation and separation between the first connecting plate and the second connecting plate under push and turn operations.

[0012] 2. This high-pressure sealing element for a natural gas valve uses gas from inside the gas cylinder to push a piston rod outward. The piston rod applies a supporting force to a limiting plate, which in turn pushes the limiting plate and the locking block outward, ensuring a tight fit between the first and second connecting discs. This prevents the limiting plate from moving due to external forces, which could cause the locking block and the second connecting disc to separate, resulting in a loose connection between the first and second connecting discs and affecting the sealing effect.

[0013] 3. This high-pressure sealing element for natural gas valves achieves tight contact between multiple surfaces of the first and second sealing rings through the convex shape of the first sealing ring and the concave shape of the second sealing ring, thereby achieving multi-layer sealing and improving the sealing effect.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the present invention;

[0020] Figure 5 This is a schematic diagram of the present invention.

[0021] In the diagram: 1. Valve pipe; 11. Natural gas pipe; 2. First connecting plate; 21. Second connecting plate; 3. Movable rod; 31. Limiting plate; 32. Spring; 33. Snap-fit ​​block; 4. First sealing ring; 41. Second sealing ring; 5. Gas cylinder; 51. Gas valve; 52. Piston rod. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0023] Please see Figure 1-5 A high-pressure sealing component for a natural gas valve includes a connecting assembly for quick installation and removal. The connecting assembly includes a valve pipe 1, a natural gas pipe 11, a first connecting plate 2, a second connecting plate 21, and a movable rod 3. The end of the valve pipe 1 is fixedly connected to the first connecting plate 2, and the end of the natural gas pipe 11 is fixedly connected to the second connecting plate 21. The movable rod 3 is elastically connected to the first connecting plate 2, and the end of the movable rod 3 is engaged with the second connecting plate 21. The first connecting plate 2 and the second connecting plate 21 are tightly connected. With the cooperation of the components within the connecting assembly, the installation and separation of the first connecting plate 2 and the second connecting plate 21 can be quickly completed by pushing and rotating.

[0024] The movable rods 3 are arranged in an array on the first connecting plate 2, and each movable rod 3 is movably connected to the corresponding first connecting plate 2. A limit plate 31 is fixedly connected to the end of each movable rod 3, and a snap-fit ​​block 33 is fixedly connected to each movable rod 3. The snap-fit ​​block 33 abuts against the second connecting plate 21. The second connecting plate 21 has an array of through holes, each with the same size as the corresponding snap-fit ​​block 33. A spring 32 is fitted onto each movable rod 3, and the end of each spring 32 is fixedly connected to the corresponding first connecting plate 2 and the limit plate 31. Before aligning the first connecting plate 2 and the second connecting plate 21, the corresponding limit plate 31 is manually rotated. The limit plate 31 drives the movable rod 3 to rotate, and the movable rod 3 drives the snap-fit ​​block 33 to align with the corresponding through hole on the second connecting plate 21. When the first connecting plate 2 and the second connecting plate 21 are aligned and fitted together, the snap-fit ​​block 33 enters through the through hole. The limit plate 31 is then manually pressed, causing the limit plate 31 to drive the corresponding movable rod 3 and... The locking block 33 extends from the through hole. When the limiting plate 31 is manually rotated, the limiting plate 31 drives the locking block 33 via the movable rod 3. After the locking block 33 aligns with the wall surface of the second connecting plate 21, the limiting plate 31 moves, compressing the locking block 33. When the limiting plate 31 is no longer manually operated, the locking block 33 applies the force generated by its deformation to the limiting plate 31. The limiting plate 31 then moves the movable rod 3 and the locking block 33, pulling the locking block 33 and causing the second connecting plate 21 to move closer to the first connecting plate 2. The first connecting plate 2 and the second connecting plate 21 are tightly fitted together, thus quickly completing the tight fit between them. When it is necessary to separate the first connecting plate 2 and the second connecting plate 21, the limiting plate 31 is manually pressed down and rotated, causing the snap-fit ​​block 33 to align with the through hole on the second connecting plate 21. Aligning the snap-fit ​​block 33 with the through hole separates the first connecting plate 2 and the second connecting plate 21. Thus, the installation and separation of the first connecting plate 2 and the second connecting plate 21 are quickly completed through the pushing and rotating operation.

[0025] The first connecting plate 2 is surrounded by air cylinders 5, each air cylinder 5 is fixedly connected to an air valve 51, and each air cylinder 5 is connected to a piston rod 52 via a piston. Each air cylinder 5 and air valve 51 are fixedly connected to the first connecting plate 2. The bottom of the limiting plate 31 has an arc-shaped groove, and the end of the corresponding piston rod 52 slides into the arc-shaped groove. An appropriate amount of gas is introduced into the air cylinder 5 through the air valve 51. The piston in the air cylinder 5 pushes the piston rod 52 to move outward to the position corresponding to the arc-shaped groove at the bottom of the limiting plate 31. After aligning the arc-shaped groove at the bottom of the limiting plate 31 with the end of the piston rod 52, Gas continues to be supplied to the air cylinder 5 through the valve 51. The gas compression pushes the piston rod 52 upward to make close contact with the limiting plate 31. The piston rod 52 applies a supporting force to the limiting plate 31 outward. The supporting force pushes the limiting plate 31 and the locking block 33 outward, making the first connecting plate 2 and the second connecting plate 21 fit tightly together. This ensures that the limiting plate 31 will not move due to external unexpected forces, causing the locking block 33 to separate from the second connecting plate 21. This would loosen the connection between the first connecting plate 2 and the second connecting plate 21, thus affecting the sealing effect.

[0026] The first connecting plate 2 has a first sealing ring 4 fixedly connected inside, and the second connecting plate 21 has a second sealing ring 41 fixedly connected inside. The first sealing ring 4 is convex, and the second sealing ring 41 is concave. The first sealing ring 4 and the second sealing ring 41 are tightly fitted together. After the first connecting plate 2 and the second connecting plate 21 are tightly fitted together, the first sealing ring 4 and the second sealing ring 41 are aligned and tightly fitted together. Through the convex shape of the first sealing ring 4 and the concave shape of the second sealing ring 41, the tight fit of the multiple walls of the first sealing ring 4 and the second sealing ring 41 is achieved, realizing multi-level sealing restriction and improving the sealing effect.

[0027] Working principle: Before aligning the first connecting plate 2 and the second connecting plate 21, manually rotate the corresponding limiting plate 31. The limiting plate 31 drives the movable rod 3 to rotate, and the movable rod 3 drives the locking block 33 to align with the corresponding through hole on the second connecting plate 21. Align and fit the first connecting plate 2 and the second connecting plate 21 together. The locking block 33 enters through the through hole. Manually press the limiting plate 31, and the limiting plate 31 drives the corresponding movable rod 3 and the locking block 33 to extend out of the through hole. Manually rotate the limiting plate 31, and the limiting plate 31 drives the locking block 33 through the movable rod 3. After the locking block 33 aligns with the wall surface of the second connecting plate 21, the movement of the limiting plate 31 compresses the locking block 33. When the position plate 31 loses manual force, the locking block 33 applies the force generated by its deformation to the limiting plate 31. The limiting plate 31 drives the movable rod 3 and the locking block 33 to move, pulling the locking block 33 to tightly fit the second connecting plate 21 with the first connecting plate 2, thus quickly completing the tight fit between the first connecting plate 2 and the second connecting plate 21. When it is necessary to separate the first connecting plate 2 and the second connecting plate 21, the limiting plate 31 is manually pressed down and rotated, causing the locking block 33 to align with the through hole on the second connecting plate 21. Aligning the locking block 33 with the through hole separates the first connecting plate 2 and the second connecting plate 21, thus quickly completing the first connection through the pushing and rotating operation. The installation and separation between the first connecting plate 2 and the second connecting plate 21 are achieved by supplying a suitable amount of gas into the air cylinder 5 through the air valve 51. The piston inside the air cylinder 5 pushes the piston rod 52 outward to a position corresponding to the arc-shaped groove at the bottom of the limiting plate 31. After aligning the arc-shaped groove at the bottom of the limiting plate 31 with the end of the piston rod 52, gas continues to be supplied into the air cylinder 5 through the air valve 51. The gas compression pushes the piston rod 52 upward, ensuring tight contact with the limiting plate 31. The piston rod 52 applies a supporting force to the limiting plate 31 outward, pushing the limiting plate 31 and the locking block 33 outward, thus tightly fitting the first connecting plate 2 and the second connecting plate 21 together. To ensure that the limiting plate 31 will not move due to external unexpected forces, causing the locking block 33 to separate from the second connecting plate 21, and the connection between the first connecting plate 2 and the second connecting plate 21 to become loose, thus affecting the sealing effect, after the first connecting plate 2 and the second connecting plate 21 are tightly fitted together, the first sealing ring 4 and the second sealing ring 41 are driven to align, and the first sealing ring 4 and the second sealing ring 41 are tightly fitted together. Through the convex shape of the first sealing ring 4 and the concave shape of the second sealing ring 41, the tight fit of the multiple walls of the first sealing ring 4 and the second sealing ring 41 is achieved, realizing multi-level sealing restriction and improving the sealing effect.

[0028] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A high-pressure seal for a natural gas valve, characterized in that, include: The connecting assembly is used for quick loading and unloading. The connecting assembly includes a valve pipe (1), a natural gas pipe (11), a first connecting plate (2), a second connecting plate (21), and a movable rod (3). The end of the valve pipe (1) is fixedly connected to the first connecting plate (2), and the end of the natural gas pipe (11) is fixedly connected to the second connecting plate (21). The movable rod (3) is elastically connected to the first connecting plate (2). The end of the movable rod (3) is engaged with the second connecting plate (21), and the first connecting plate (2) and the second connecting plate (21) are tightly connected. The movable rods (3) are arranged in an array on the first connecting plate (2), and each movable rod (3) is movably connected to the corresponding first connecting plate (2), and the end of each movable rod (3) is fixedly connected to a limiting plate (31); each movable rod (3) is fixedly connected to a snap-fit ​​block (33), the snap-fit ​​block (33) abuts against the second connecting plate (21), and the second connecting plate (21) is provided with an array of through holes, the size of each through hole being the same as the corresponding snap-fit ​​block (33); each movable rod (3) is fitted with a spring (32), and the end of each spring (32) is fixedly connected to the corresponding first connecting plate (2) and the limiting plate (31); an air cylinder (5) is arranged around the first connecting plate (2), each air cylinder (5) is fixedly connected to an air valve (51), each air cylinder (5) is connected to a piston rod (52) through a piston, and each air cylinder (5) and air valve (51) are fixedly connected to the first connecting plate (2).

2. The high-pressure seal for a natural gas valve according to claim 1, characterized in that, The bottom of the limiting plate (31) is provided with an arc-shaped groove, and the end of the corresponding piston rod (52) slides between the arc-shaped groove.

3. The high-pressure seal for a natural gas valve according to claim 1, characterized in that, The first connecting plate (2) is fixedly connected with a first sealing ring (4), and the second connecting plate (21) is fixedly connected with a second sealing ring (41). The first sealing ring (4) is convex, and the second sealing ring (41) is concave. The first sealing ring (4) and the second sealing ring (41) are tightly fitted together.

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