Leakage-proof sealing connection structure of gas meter connector

Abstract

The utility model discloses a gas meter connector leakproof sealing connection structure which comprises a fixed connector arranged on a gas meter body, a valve body is connected between the fixed connector and a gas pipeline connector, an extrusion type sealing assembly is arranged at the lower end of the valve body, the extrusion type sealing assembly is respectively connected with the fixed connector in a sealing mode, and the valve body is connected with the fixed connector in a sealing mode. The utility model relates to the technical field of gas meters, the lower end of the valve body is assembled and connected with a fixed joint through an extrusion type sealing assembly, and a stepped joint structure is matched with an elastic supporting component and a sealing rubber ring, so that multiple sealing of a connecting position is realized; the structural strength and the sealing effect of the connecting position can be effectively improved; the upper end of the valve body is connected with the gas pipeline connector through the limiting sealing assembly, threaded assembly is adopted, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of gas meters, in particular to an anti-leakage sealing connection structure for a gas meter joint. Background Art

[0002] A gas meter has an automatic accumulation function, which can conveniently know how much gas has been used, so as to pay the fee according to the cubic meters of gas consumed per month. Generally, two joints for gas to enter or exit are provided on the gas meter, and the ends of the joints are threadedly connected to the ends of the gas pipelines. When installing the gas meter, there may be a hidden danger that the joint and the gas pipeline do not fit tightly, and thus it is easy to have gas leakage; in the prior art, the conventional solution is to wrap an elastic sealing tape at the threaded connection to improve the sealing performance between the joint and the gas pipeline. However, the elastic sealing tape is prone to aging and deformation, resulting in the loosening of the threaded connection, and there is also a great risk of leakage, leading to imperfect sealing and certain safety hazards. In view of this, in-depth research on the above problems has led to the generation of this case. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides an anti-leakage sealing connection structure for a gas meter joint, which solves the problems put forward in the background art.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: an anti-leakage sealing connection structure for a gas meter joint, including a fixed joint arranged on the gas meter body, a valve body is connected between the fixed joint and the gas pipeline joint, an extrusion type sealing component is arranged at the lower end of the valve body, the extrusion type sealing component is hermetically connected to the fixed joint respectively, a limit sealing component is arranged at the upper end of the valve body, and the limit sealing component is connected to the gas pipeline joint;

[0005] The extrusion type sealing component includes an insertion joint, a fixing ring, an elastic support member, a sealing rubber ring and a flange nut. The insertion joint is arranged at the lower end of the valve body, the outer wall surface of the insertion joint is a stepped structure, the fixing ring is welded on the outer side of the insertion joint, a stepped groove is formed on the inner ring surface of the fixed joint, the stepped groove is matched with the stepped structure, the elastic support member is arranged on the step surface of the stepped structure, the sealing rubber ring is arranged on the lower end surface of the elastic support member, and the flange nut is rotationally sleeved at the position of the fixing ring and is threadedly connected to the fixed joint.

[0006] The above elastic support member includes a compression spring, a top column and a support ring. Blind holes are uniformly arranged in an annular array on the step surface of the stepped structure, the compression spring is installed in the blind holes, the upper end of the top column is slidably inserted into the blind holes and is connected to the compression spring, and the support ring is welded to the lower end of the top column.

[0007] The above-mentioned limit sealing assembly includes a threaded joint, a limit ring, an inner gasket, an outer gasket and a limit fastener. The threaded joint is welded to the upper end of the valve body and is assembled and connected with the gasket nut on the gas pipeline. The limit ring is welded to the outside of the threaded joint. The inner gasket is mounted on the upper end face of the threaded joint. The outer gasket is mounted on the upper end face of the limit ring. The limit fastener is buckled on the outside of the gasket nut and the limit ring.

[0008] The above-mentioned limit fastener includes an arc-shaped clamping plate, an arc-shaped limit plate and a locking member. The arc-shaped clamping plate is buckled on the outside of the limit ring and the gasket nut and one end is hinged to each other. The arc-shaped limit plate is welded to the upper and lower ends of the arc-shaped clamping plate and is respectively attached to the end faces of the limit plate and the gasket nut. The locking member is installed at the opening position of the arc-shaped clamping plate.

[0009] The above-mentioned locking member includes a support, a fixing nut and a fastening bolt. The support is welded to the side wall of the arc-shaped clamping plate. The fixing nut is welded to the support. The fastening bolt passes through the support and is assembled and connected with the fixing nut.

[0010] A rubber sealing ring is arranged between the above-mentioned flange nut and the fixing ring.

[0011] The utility model provides a leak-proof sealing connection structure for a gas meter joint, which has the following beneficial effects: In the leak-proof sealing connection structure for a gas meter joint, a valve body is arranged between the fixed joint on the gas meter body and the gas pipeline joint to control the opening and closing of the gas transmission channel. The lower end of the valve body is assembled and connected with the fixed joint through an extrusion sealing assembly. By adopting the cooperation of a stepped joint structure, an elastic support member and a sealing rubber ring, multiple seals at the connection position can be realized, which can effectively improve the structural strength and sealing effect at the connection position. The upper end of the valve body is connected with the gas pipeline joint through a limit sealing assembly. By adopting a threaded assembly, the structure is simple and the operation is convenient. In addition, double seals on both the inner and outer sides can be realized, greatly improving the connection sealing performance between the gas pipeline joint and the valve body. Description of the Drawings

[0012] Figure 1 It is a front view structural schematic diagram of the leak-proof sealing connection structure for a gas meter joint described in the utility model.

[0013] Figure 2 It is a partial sectional structural schematic diagram of the extrusion sealing assembly described in the utility model.

[0014] Figure 3 It is a partial sectional structural schematic diagram of the limit sealing assembly described in the utility model.

[0015] Figure 4 For the utility model Figure 2 Partial enlarged structural schematic diagram at position a.

[0016] Figure 5 This is a three-dimensional structural schematic diagram of the limit fastener described in the present utility model.

[0017] In the figure: 1. Fixed joint; 2. Gas pipeline joint; 3. Valve body; 4. Insertion joint; 5. Fixed ring; 6. Sealing rubber ring; 7. Flange nut; 8. Compression spring; 9. Top column; 10. Support ring; 11. Threaded joint; 12. Limit ring; 13. Inner gasket; 14. Outer gasket; 15. Arc-shaped buckle plate; 16. Arc-shaped limit plate; 17. Support; 18. Fixed nut; 19. Fastening bolt; 20. Rubber sealing ring. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than 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 efforts shall fall within the protection scope of the present utility model.

[0019] Embodiment: As can be seen from the attached Figure 1-5 description, the present application specifically designs a leak-proof sealing connection structure for a gas meter joint, including a fixed joint 1 provided on the gas meter body. A valve body 3 is connected between the fixed joint 1 and the gas pipeline joint 2. An extrusion sealing assembly is provided at the lower end of the valve body 3, and the extrusion sealing assembly is respectively sealed and connected to the fixed joint 1. A limit sealing assembly is provided at the upper end of the valve body 3, and the limit sealing assembly is connected to the gas pipeline joint 2; a valve body 3 is provided between the fixed joint 1 and the gas pipeline joint 2 on the gas meter body to control the opening and closing of the gas transmission channel. The lower end of the valve body 3 is assembled and connected to the fixed joint 1 through an extrusion sealing assembly. By using the cooperation of a stepped joint structure, an elastic support member, and a sealing rubber ring, multiple seals at the connection position can be achieved, effectively improving the structural strength and sealing effect at the connection position; the upper end of the valve body 3 is connected to the gas pipeline joint 2 through a limit sealing assembly, and a threaded assembly is adopted, which has a simple structure and convenient operation. In addition, double seals on both the inside and outside can be achieved, greatly improving the connection tightness between the gas pipeline joint 2 and the valve body 3

[0020] Among them, the extrusion sealing assembly includes an insertion joint 4, a fixing ring 5, an elastic support member, a sealing rubber ring 6, and a flange nut 7. The insertion joint 4 is arranged at the lower end of the valve body 3. The outer wall surface of the insertion joint 4 is a stepped structure. The fixing ring 5 is welded to the outside of the insertion joint 4. A stepped groove is provided on the inner ring surface of the fixed joint 1, and the stepped groove matches the stepped structure. The elastic support member is arranged on the step surface of the stepped structure. The sealing rubber ring 6 is arranged on the lower end surface of the elastic support member. The flange nut 7 is rotatably sleeved at the position of the fixing ring 5 and is threadedly connected to the fixed joint 1. The above-mentioned elastic support member includes a compression spring 8, a top column 9, and a support ring 10. Blind holes are evenly arranged in a circular array along the step surface of the stepped structure. The compression spring 8 is installed in the blind holes. The upper end of the top column 9 is slidably inserted into the blind holes and is connected to the compression spring 8. The support ring 10 is welded to the lower end of the top column 9. A rubber sealing ring 20 is arranged between the above-mentioned flange nut 7 and the fixing ring 5. During installation, the insertion joint 4 at the lower part of the valve body 3 is inserted into the fixed joint 1 at the upper part of the gas meter main body, and the stepped structure on the outer wall surface of the insertion joint 4 is tightly combined with the stepped groove on the inner ring surface of the fixed joint 1. Rotate the flange nut 7 to realize the assembly and fixation between the insertion joint 4 and the fixed joint 1. During the tightening process of the flange nut 7, the gap between the stepped groove and the stepped surface of the stepped structure continuously decreases. Then, the sealing rubber ring 6 between the support ring 10 and the stepped surface of the stepped groove is extruded to improve the sealing performance of the contact position. At the same time, the top column 9 at the top of the support ring 10 continuously squeezes the compression spring 8 inward. The reset elastic force of the compression spring 8 can generate a downward thrust on the support ring 10, thereby further enhancing the elastic deformation of the sealing rubber ring 6 at the joint position and improving the sealing effect.

[0021] In the specific implementation process, the above-mentioned limit sealing assembly includes a threaded joint 11, a limit ring 12, an inner gasket 13, an outer gasket 14 and a limit fastener. The threaded joint 11 is welded to the upper end of the valve body 3 and is assembled and connected with the pad nut on the gas pipeline. The limit ring 12 is welded to the outside of the threaded joint 11. The inner gasket 13 is attached to the upper end face of the threaded joint 11. The outer gasket 14 is attached to the upper end face of the limit ring 12. The limit fastener is buckled on the outside of the pad nut and the limit ring 12. The above-mentioned limit fastener includes an arc-shaped buckle plate 15, an arc-shaped limit plate 16 and a locking member. The arc-shaped buckle plate 15 is buckled on the outside of the limit ring 12 and the pad nut and one end is hinged to each other. The arc-shaped limit plate 16 is welded to the upper and lower ends of the arc-shaped buckle plate 15 and is respectively in contact with the limit plate and the end face of the pad nut. The locking member is installed at the opening position of the arc-shaped buckle plate 15. The locking member includes a support 17, a fixing nut 18 and a fastening bolt 19. The support 17 is welded to the side wall of the arc-shaped buckle plate 15. The fixing nut 18 is welded to the support 17. The fastening bolt 19 passes through the support 17 and is assembled and connected with the fixing nut 18. After the valve body 3 is installed in place, the end joint of the gas pipeline is aligned with the threaded joint 11 at the top of the valve body 3. The assembly connection between the end joint of the gas pipeline and the threaded joint 11 is realized by using the pad nut. The gap between the top of the threaded joint 11 and the end joint of the gas pipeline is sealed by the inner gasket 13. The gap between the limit ring 12 and the pad nut is sealed by the outer gasket 14. The outside of the pad nut and the limit ring 12 is mechanically reinforced by the limit fastener, which can effectively improve the structural strength of the connection position and enhance the safety of gas transmission.

[0022] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leak-proof sealing connection structure for a gas meter joint, including a fixed joint arranged on the gas meter body, characterized in that, A valve body is connected between the fixed joint and the gas pipeline joint. An extrusion sealing assembly is arranged at the lower end of the valve body. The extrusion sealing assembly is hermetically connected to the fixed joint respectively. A limit sealing assembly is arranged at the upper end of the valve body. The limit sealing assembly is connected to the gas pipeline joint. The extrusion sealing assembly includes a socket joint, a fixing ring, an elastic support member, a sealing rubber ring and a flange nut. The socket joint is arranged at the lower end of the valve body. The outer wall surface of the socket joint is a stepped structure. The fixing ring is welded on the outer side of the socket joint. A stepped groove is formed on the inner ring surface of the fixed joint. The stepped groove matches the stepped structure. The elastic support member is arranged on the step surface of the stepped structure. The sealing rubber ring is arranged on the lower end surface of the elastic support member. The flange nut is rotatably sleeved at the position of the fixing ring and is threadedly connected to the fixed joint.

2. The leak-proof sealing connection structure of a gas meter joint according to claim 1, wherein The elastic support member includes a compression spring, a top column and a support ring. Blind holes are evenly formed in an annular array on the step surface of the stepped structure. The compression spring is installed in the blind holes. The upper end of the top column is slidably inserted into the blind holes and is connected to the compression spring. The support ring is welded on the lower end of the top column.

3. A leak-proof sealing connection structure for a gas meter joint according to claim 1, characterized in that The limit sealing assembly includes a threaded joint, a limit ring, an inner sealing pad, an outer sealing pad and a limit fastener. The threaded joint is welded on the upper end of the valve body and is assembled and connected to a gasket nut on the gas pipeline. The limit ring is welded on the outer side of the threaded joint. The inner sealing pad is attached to the upper end surface of the threaded joint. The outer sealing pad is attached to the upper end surface of the limit ring. The limit fastener is buckled on the outer sides of the gasket nut and the limit ring.

4. A leak-proof sealing connection structure for a gas meter joint according to claim 3, characterized in that, The limit fastener includes an arc-shaped buckle plate, an arc-shaped limit plate and a locking member. The arc-shaped buckle plate is buckled on the outer sides of the limit ring and the gasket nut and one end is hinged to each other. The arc-shaped limit plates are welded on the upper and lower ends of the arc-shaped buckle plate and are respectively attached to the end surfaces of the limit plate and the gasket nut. The locking member is installed at the opening position of the arc-shaped buckle plate.

5. A leak-proof sealing connection structure for a gas meter joint according to claim 4, characterized in that, The locking member includes a support, a fixing nut and a fastening bolt. The support is welded on the side wall of the arc-shaped buckle plate. The fixing nut is welded on the support. The fastening bolt penetrates through the support and is assembled and connected to the fixing nut.

6. The leak-proof and sealed connection structure of a gas meter joint according to claim 1, characterized in that A rubber sealing ring is arranged between the flange nut and the fixing ring.

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