Sealing anti-theft connector of gas meter

Abstract

The invention discloses a gas meter sealing anti-theft joint, which belongs to the technical field of gas meters, is used for connecting a gas port of a gas meter and a gas pipeline, and comprises a first connecting sleeve in threaded connection with the gas port of the gas meter and a second connecting sleeve in threaded connection with the gas pipeline, an annular gap is formed between the connecting section and the gas pipeline, a plurality of sliding grooves are formed in the inner wall of the connecting section in the circumferential direction, sliding blocks are installed in the sliding grooves in a sliding mode, inclined edges are arranged on one sides of the sliding blocks, elastic pieces are fixed between the sliding blocks and the inner walls of the sliding grooves, an annular empty groove matched with the connecting section is formed in the second connecting sleeve, and the annular empty groove is in threaded connection with the first connecting sleeve. And a spline section communicated with the annular empty slot is arranged on the second connecting sleeve. The spline section is arranged to be matched with the sliding block, so that the second connecting sleeve and the first connecting sleeve cannot be separated after being in threaded connection, the connection stability of a gas meter gas port and a gas pipeline is improved, easy disassembly is avoided, and the anti-theft performance is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of gas meters, and in particular relates to a sealed anti-theft joint for a gas meter. Background Art

[0002] The gas meter connector is used to connect the gas meter gas port and the connecting pipe. Existing gas meter connectors generally use nut connection. However, the nut threaded connection is easy to disassemble, and gas leakage and theft often occur, causing serious economic losses to gas supply companies and threatening the gas safety of users.

[0003] Therefore, it is necessary to improve the anti-disassembly function of the gas meter connector. In the prior art, for example, a Chinese patent with announcement number CN105258754B discloses an anti-disassembly gas meter connector, which realizes the anti-disassembly function by plugging and cooperating with a limiting magnet and a limiting hole. However, when the entire connector needs to be disassembled, the connector can be removed from the gas meter by unscrewing the fixing screws and removing the anti-disassembly cap and the anti-disassembly magnet. The operation of unscrewing the fixing screws can be easily unscrewed by existing tools, so that its anti-disassembly and anti-theft functions are relatively weak.

[0004] Therefore, it is necessary to propose a gas meter sealing anti-theft joint to solve the above problems. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a gas meter sealed anti-theft joint, which is used to solve the problem that the gas meter joint in the prior art can be easily screwed out by existing tools, resulting in weak anti-disassembly and anti-theft functions.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a gas meter sealing anti-theft joint for connecting a gas meter gas port and a gas pipeline, the anti-theft joint comprising a first connecting sleeve threadedly connected to the gas meter gas port and a second connecting sleeve threadedly connected to the gas pipeline, a sealing ring is arranged in the first connecting sleeve, the first connecting sleeve is provided with a threaded section threadedly connected to the gas meter gas port, the threaded section is provided with an internal thread matched with the external thread of the gas meter gas port, the first connecting sleeve is provided with a connecting section above the sealing ring, the connecting section is provided with an external thread, an annular gap for the second connecting sleeve to enter is arranged between the connecting section and the gas pipeline, a plurality of sliding grooves are circumferentially arranged on the inner wall of the connecting section with the axis of the gas meter gas port as the center, a sliding member capable of sliding radially along the gas meter gas port is slidably installed in the sliding groove The cam is provided with an inner wall of the slide groove and an inner wall of the slide groove is provided with an inner thread which cooperates with the gas pipeline, and the inner wall of the slide groove is provided with an inner thread which cooperates with the gas pipeline. The inner wall of the slide groove is provided with an inner thread which cooperates with the outer thread of the slide groove. The inner wall of the slide groove is provided with an inner thread which cooperates with the outer thread of the slide groove. The inner wall of the slide groove is provided with an inner thread which cooperates with the outer thread of the slide groove. The inner wall of the slide groove is provided with an inner thread which cooperates with the outer thread of the slide groove. The inner wall of the slide groove is provided with an inner thread which cooperates with the outer thread of the slide groove. The inner wall of the slide groove is provided with an inner thread which cooperates with the outer thread of the slide groove. The inner wall of the slide groove is provided with an inner thread which cooperates with the outer thread of the slide groove. The inner wall of the slide groove is provided with an inner thread which cooperates with the outer thread of the slide groove. The inner wall of the slide groove is provided with an inner thread which cooperates with the outer thread of the slide groove. The inner wall of the slide groove is provided with an inner thread which cooperates with the outer thread of the slide groove.

[0008] Furthermore, the connecting section is provided with a limiting groove connecting the outside of the connecting section and the slide groove near the gas outlet side of the gas meter. A sliding rod is fixedly connected to the sliding block and can slide along the limiting groove. One end of the sliding rod extends to the outside of the connecting section. Synchronously sliding multiple sliding rods can enable multiple sliding blocks to slide into the slide groove to unlock the spline section.

[0009] Furthermore, multiple sliding rods achieve synchronous sliding through a disassembly ring. The disassembly ring is circumferentially provided with multiple arc grooves corresponding to the limit grooves with the axis of the disassembly ring as the center. The sliding rod can extend into the arc groove. When disassembling the first connecting sleeve and the second connecting sleeve, the disassembly ring is installed on the connecting section so that the multiple sliding rods extend into the arc groove one by one. Then the disassembly ring is rotated so that the arc groove drives the sliding rod to move along the sliding groove in a direction away from the axis of the gas pipeline, so that the sliding rod can be disengaged from the key groove.

[0010] Furthermore, the disassembly ring is formed by splicing and fixing two symmetrically arranged semicircular rings.

[0011] Furthermore, an annular protective groove is provided on the connecting section near the gas outlet side of the gas meter, the groove opening of the protective groove is connected to the outside of the connecting section, and the protective groove is connected to the limiting groove, the sliding rod extends into the protective groove, and a closing ring capable of closing the protective groove is threadedly connected to the protective groove.

[0012] Furthermore, the disassembly ring can be threadedly connected to the protection groove.

[0013] The beneficial effects of the present invention are:

[0014] The present invention arranges a spline section to cooperate with the slider so that the second connecting sleeve cannot be separated from the first connecting sleeve after being threadedly connected, thereby improving the connection stability of the gas meter gas port and the gas pipeline, avoiding easy disassembly, and improving the anti-theft performance. A sealing ring is arranged between the gas meter gas port and the gas pipeline to improve the sealing of the connection between the gas meter gas port and the gas pipeline. The sealing ring is made of elastic material. After the first connecting sleeve and the second connecting sleeve are threadedly connected, the elasticity of the sealing ring makes the cooperation of each external thread and internal thread in the anti-theft joint tighter, thereby improving the stability of the anti-theft joint connection.

[0015] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0017] Figure 1 A side cross-sectional view of an anti-theft connector according to an embodiment of the present invention;

[0018] Figure 2 A top cross-sectional view of an anti-theft connector according to an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the cooperation between the disassembly ring and the slide rod according to an embodiment of the present invention.

[0020] The markings in the accompanying drawings are as follows: gas meter gas port 1, gas pipeline 2, first connecting sleeve 3, threaded section 301, connecting section 302, slide groove 303, slider 304, inclined edge 305, elastic member 306, limit groove 307, slide rod 308, protective groove 309, closed ring 310, second connecting sleeve 4, annular empty groove 401, spline section 402, flat key 403, keyway 404, sealing ring 5, disassembly ring 6, arc groove 601. DETAILED DESCRIPTION

[0021] like Figures 1 to 3As shown, the present invention provides a gas meter sealed anti-theft joint, which is used to connect a gas meter gas port 1 and a gas pipeline 2, wherein the gas meter gas port 1 includes an air inlet and an air outlet fixedly arranged on the gas meter, the anti-theft joint includes a first connecting sleeve 3 threadedly connected to the gas meter gas port 1 and a second connecting sleeve 4 threadedly connected to the gas pipeline 2, a sealing ring 5 is arranged in the first connecting sleeve 3, the first connecting sleeve 3 is provided with a threaded section 301 threadedly connected to the gas meter gas port 1, the threaded section 301 is provided with an internal thread matched with the external thread of the gas meter gas port 1, the sealing ring 5 is fixedly arranged above the threaded section 301, the first connecting sleeve 3 is provided with a connecting section 302 above the sealing ring 5, the connecting section 302 is provided with an external thread, an annular gap for the second connecting sleeve 4 to enter is provided between the connecting section 302 and the gas pipeline 2, and the inner wall of the connecting section 302 is provided with a gas meter gas port 1 axis is the center and a plurality of slide grooves 303 are arranged circumferentially, a slider 304 that can slide radially along the gas port 1 of the gas meter is slidably installed in the slide groove 303, the slider 304 is provided with an inclined edge 305 near the axial center side of the gas port 1 of the gas meter, an elastic member 306 is fixedly connected between the slider 304 and the inner wall of the slide groove 303, the elastic member 306 is a spring, the second connecting sleeve 4 is provided with an internal thread that cooperates with the gas pipeline 2, the second connecting sleeve 4 is provided with an annular hollow groove 401 that cooperates with the connecting section 302, the annular hollow groove 401 is provided with an internal thread that cooperates with the external thread of the connecting section 302, the second connecting sleeve 4 is provided with a spline section 402 that is connected to the annular hollow groove 401, a plurality of flat keys 403 are arranged circumferentially on the spline section 402 with the axis of the second connecting sleeve 4 as the center, and a keyway 404 corresponding to the slide groove 303 is formed between two adjacent flat keys 403.

[0022] In this solution, during the process of connecting the anti-theft joint to the gas meter gas port 1 and the gas meter pipeline 2, the first connecting sleeve 3 is threadedly connected to the gas meter gas port 1, and the bottom wall of the sealing ring 5 is abutted against the top wall of the gas meter gas port 1, and then the gas pipeline 2 is aligned with the gas meter gas port 1, so that the sealing ring 5 is abutted between the bottom wall of the gas pipeline 2 and the top wall of the gas meter gas port 1, and then the position of the second connecting sleeve 4 is adjusted so that the keyway 404 on the spline section 402 corresponds to the slide groove 303. At this time, the slider 304 extends out of the slide groove 303 to the keyway 404 under the action of the elastic member 306, and then the second connecting sleeve 4 is rotated. Sleeve 4, so that the second connecting sleeve 4 is rotated and moved downward. During this process, one side of the flat key 403 on the spline segment 402 can squeeze the inclined edge 305 of the slider 304, so that the slider 304 can slide into the slide groove 303, so that the second connecting sleeve 4 can be rotated and moved downward. Since the other side of the flat key 403 is against the vertical edge of the slider 304, the second connecting sleeve 4 cannot rotate in the opposite direction. That is, after the second connecting sleeve 4 is threadedly connected with the connecting segment 302 of the first connecting sleeve 3 to stabilize the connection between the gas meter gas port 1 and the gas pipeline 2, the second connecting sleeve 4 cannot rotate in the opposite direction, so that the gas meter gas port 1 and the gas pipeline 2 are locked.

[0023] In this solution, a spline section 402 is arranged to cooperate with a slider 304 so that the second connecting sleeve 4 cannot be separated from the first connecting sleeve 3 after being threadedly connected, thereby improving the connection stability of the gas meter gas port 1 and the gas pipeline 2, avoiding easy disassembly, and improving the anti-theft performance. A sealing ring 5 is arranged between the gas meter gas port 1 and the gas pipeline 2 to improve the sealing of the connection between the gas meter gas port 1 and the gas pipeline 2. The sealing ring 5 is made of elastic material. After the first connecting sleeve 3 and the second connecting sleeve 4 are threadedly connected, the elasticity of the sealing ring 5 makes the external threads and internal threads in the anti-theft joint fit more tightly, thereby improving the stability of the anti-theft joint connection.

[0024] In one embodiment of the present invention, the connecting section 302 is provided with a limiting groove 307 connecting the outside of the connecting section 302 and the slide groove 303 near the gas meter gas port 1, and the slider 304 is fixedly connected with a sliding rod 308 that can slide along the limiting groove 307. One end of the sliding rod 308 extends to the outside of the connecting section 302. Synchronously sliding multiple sliding rods 308 can enable multiple sliders 304 to slide into the slide groove 303 to unlock the spline section 402.

[0025] In this solution, when professional maintenance personnel need to disassemble the anti-theft joint, they can use a special disassembly tool to make multiple slide bars 308 slide synchronously to unlock the spline segment 402, so that the second connecting sleeve 4 can rotate in a certain direction to disengage from the first connecting sleeve 3.

[0026] In one embodiment of the present invention, multiple sliding rods 308 are synchronously slid by disassembling the ring 6. The disassembly ring 6 is circumferentially provided with multiple arc grooves 601 corresponding to the limit grooves 307 with the axis of the disassembly ring 6 as the center. The sliding rod 308 can extend into the arc groove 601. When disassembling the first connecting sleeve 3 and the second connecting sleeve 4, the disassembly ring 6 is installed on the connecting section 302, so that the multiple sliding rods 308 extend into the arc groove 601 one by one, and then the disassembly ring 6 is rotated so that the arc groove 601 drives the sliding rod 308 to move along the sliding groove 303 in a direction away from the axis of the gas pipeline 2, so that the sliding rod 308 is disengaged from the key groove 404.

[0027] In this solution, by providing a disassembly ring 6, the specificity of the disassembly tool is improved, so that maintenance personnel can easily disassemble the anti-theft joint, while non-maintenance personnel find it difficult to disassemble the anti-theft joint, thereby improving the anti-theft function and the maintenance convenience of maintenance personnel.

[0028] In one embodiment of the present invention, the disassembly ring 6 is formed by two symmetrically arranged semicircular rings spliced ​​and fixed. Since the gas meter gas port 1 and the gas pipeline 2 are connected together through the anti-theft joint, the annular disassembly ring 6 cannot be set under the connecting section 302. By setting the disassembly ring 6 as two symmetrical semicircular rings, the convenience of using the disassembly ring 6 is improved, and the two semicircular rings need to be spliced ​​and rotated synchronously to disengage all the slide bars 308 from the key slot 404 to unlock the spline section 402, thereby further improving the anti-theft performance.

[0029] In one embodiment of the present invention, the connecting section 302 is provided with an annular protective groove 309 near the gas meter gas port 1, the notch of the protective groove 309 is connected to the outside of the connecting section 302, and the protective groove 309 is connected to the limiting groove 307, the sliding rod 308 extends into the protective groove 309, and the protective groove 309 is threadedly connected with a closing ring 310 capable of closing the protective groove 309 to close the sliding rod 308, so as to prevent the sliding rod 308 from being exposed and damaged, thereby making it impossible for maintenance personnel to disassemble the first connecting sleeve 3 and the second connecting sleeve 4.

[0030] In one embodiment of the present invention, the disassembly ring 6 can be threadedly connected with the protection groove 309. After the two semicircular rings are closed to form the disassembly ring 6, the closed ring 301 is screwed out of the protection groove 309, and then the disassembly ring 6 is threadedly connected with the protection groove 309, and the slide bar 308 is extended into the arc groove 601, and then the slide bar 308 is synchronously slid by rotating the disassembly ring 6. This process ensures the stability of the rotation of the disassembly ring 6, so that after the slide bar 308 is separated from the key groove 404, the stability of the slide bar 308 can be ensured, so that the maintenance personnel can rotate the second connecting sleeve 4 to disassemble the anti-theft joint.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A gas meter sealed anti-theft joint, used to connect the gas meter gas port and the gas pipeline, characterized by: The anti-theft joint includes a first connecting sleeve threadedly connected to the gas port of the gas meter and a second connecting sleeve threadedly connected to the gas pipeline, a sealing ring is arranged in the first connecting sleeve, a threaded section is arranged in the first connecting sleeve threadedly connected to the gas port of the gas meter, the threaded section is arranged with an internal thread matched with the external thread of the gas port of the gas meter, a connecting section is arranged above the sealing ring, the connecting section is arranged with an external thread, an annular gap for the second connecting sleeve to enter is arranged between the connecting section and the gas pipeline, a plurality of sliding grooves are arranged circumferentially on the inner wall of the connecting section with the axis of the gas port of the gas meter as the center, a slider which can slide radially along the gas port of the gas meter is slidably installed in the sliding groove, and the slider is close to the axial side of the gas port of the gas meter An inclined edge is provided, an elastic part is fixedly connected between the slider and the inner wall of the slide groove, the second connecting sleeve is provided with an internal thread matching the gas pipeline, the second connecting sleeve is provided with an annular groove matching the connecting section, the annular groove is provided with an internal thread matching the external thread of the connecting section, the second connecting sleeve is provided with a spline section connected to the annular groove, a plurality of flat keys are circumferentially provided on the spline section with the axis of the second connecting sleeve as the center, and a key groove corresponding to the slide groove is formed between two adjacent flat keys. When the second connecting sleeve is rotated to make the second connecting sleeve move axially in the direction close to the gas port of the gas meter, the flat key can squeeze the inclined edge of the slider, and when the connecting section abuts against the annular groove, the slider extends into the key groove.

2. The gas meter sealing anti-theft joint according to claim 1, characterized in that: The connecting section is provided with a limiting groove connecting the outside of the connecting section and the slide groove near the gas outlet of the gas meter. A sliding rod is fixedly connected to the sliding block and can slide along the limiting groove. One end of the sliding rod extends to the outside of the connecting section. Synchronous sliding of multiple sliding rods can enable multiple sliding blocks to slide into the slide groove to unlock the spline section.

3. The gas meter sealing anti-theft joint according to claim 2, characterized in that: Multiple sliding rods achieve synchronous sliding through a disassembly ring. The disassembly ring is circumferentially provided with multiple arc grooves corresponding to the limit grooves with the axis of the disassembly ring as the center. The sliding rod can extend into the arc groove. When disassembling the first connecting sleeve and the second connecting sleeve, the disassembly ring is installed on the connecting section so that the multiple sliding rods extend into the arc groove one by one. Then the disassembly ring is rotated so that the arc groove drives the sliding rod to move along the sliding groove in a direction away from the axis of the gas pipeline, so that the sliding rod can be separated from the key groove.

4. The gas meter sealing anti-theft joint according to claim 3, characterized in that: The disassembly ring is formed by splicing and fixing two symmetrically arranged semicircular rings.

5. The gas meter sealing anti-theft joint according to claim 4, characterized in that: The connecting section is provided with an annular protective groove near the gas outlet of the gas meter, the notch of the protective groove is connected to the outside of the connecting section, and the protective groove is connected to the limiting groove, the sliding rod extends into the protective groove, and a closing ring capable of closing the protective groove is threadedly connected to the protective groove.

6. The gas meter sealing anti-theft joint according to claim 5, characterized in that: The disassembly ring can be threadedly connected to the protection groove.

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