Locking pipe joint for fuel gas

Abstract

A locking pipe joint for fuel gas comprises a joint body with at least two birdmouths, and is characterized in that locking lantern rings are sleeved on the birdmouths, a plurality of first threaded holes are formed in the locking lantern rings at intervals in the circumferential direction, second threaded holes corresponding to the first threaded holes are formed in the joint body, and the second threaded holes correspond to the second threaded holes. A screw sequentially penetrates through the first threaded hole and the second threaded hole to abut against the outer wall of the pipeline, and a gasket is further arranged between the connector body and the pipeline. According to the pipe joint, under the action of the screw and the locking lantern ring, the joint body clamps a pipeline in the axial direction, and connection between the pipe joint and the pipeline is guaranteed; and the user can disassemble the screw to adjust the connecting effect of the pipeline and the pipe joint, so that the user can disassemble and adjust the pipe joint conveniently. In addition, the gasket is arranged between the joint body and the pipeline and can prevent the pipeline from moving, so that the concentricity of connection of the pipeline and the pipe joint is guaranteed, and the connection effect of the pipeline and the pipe joint is better.

Description

Technical Field

[0001] This utility model relates to pipeline connection technology, and in particular to a locking pipe joint for gas. Background Technology

[0002] Pipe connections are a very common application requirement in pipeline construction. Currently, pipe fittings are commonly used to connect gas pipelines. Pipe fittings are typically hollow cylindrical shells. The two pipes to be connected are inserted into the sockets at both ends of the fitting, thus sealing and connecting the two pipes. An existing pipe fitting, as shown in Chinese Utility Model Patent No. CN201922051967.3 (Authorization Announcement No. CN211010200U), includes a welded pipe and a connecting pipe. The connecting pipe is placed between the two welded pipes, and the pipes are fixedly connected to the welded pipes by hot-melt welding, thereby completing the connection between the pipes.

[0003] Although the aforementioned pipe fittings can be fixedly connected to gas pipelines using hot-melt welding, the assembly method makes disassembly and adjustment inconvenient, causing difficulties for users in actual use. Furthermore, relying solely on welding to fix the pipeline and fitting together results in poor concentricity; that is, the central axis of the fitting is misaligned with the central axis of the pipeline, potentially leading to poor stability of the connection. Therefore, further improvements to gas pipe fittings are needed. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a gas locking pipe joint that can be disassembled and adjusted and has better concentricity, in view of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the gas locking pipe connector includes a connector body with at least two receiving interfaces, characterized in that: a locking collar is sleeved on the receiving interface, the locking collar is provided with a plurality of first threaded holes spaced apart along the circumference, the connector body is provided with a second threaded hole corresponding to the first threaded hole, the screw passes through the first threaded hole and the second threaded hole in sequence to abut against the outer wall of the pipe, and a gasket is also provided between the connector body and the pipe.

[0006] Furthermore, the first threaded hole is located on one side of the locking collar, and the washer is located on the side away from the first threaded hole. That is, the washer is located on the side furthest from the screw installed by the operator. When the screw presses against the outer wall of the pipe, it will exert a force on the pipe away from the screw. The washer can prevent the pipe from moving, thereby preventing the pipe from shifting to one side and causing poor concentricity.

[0007] To ensure a tight seal between the pipe and the fitting, preferably, the socket extends outward in a circumferential direction to form an annular groove. A sealing ring is provided within this groove, and the sealing ring, under the action of a locking collar, seals the gap between the fitting body and the pipe. Screws fix the locking collar to the socket of the fitting, and the locking collar drives the fitting body to generate axial force to grip the pipe, thereby deforming the sealing ring and sealing the gap between the fitting body and the pipe. Alternatively, after the locking collar is fixed with screws, the end of the fitting body's socket can be welded to the outer wall of the pipe, resulting in a better connection between the pipe and the fitting.

[0008] Furthermore, the connector body has a locking section at the end of the receiving interface for installing a locking collar, the second threaded hole is provided on the locking section, and the annular groove is provided adjacent to the locking section. Under the action of the locking collar, the connector body and the pipe can better drive the sealing ring to deform.

[0009] Furthermore, the gasket is an arc-shaped metal sheet. The metal sheet can prevent the pipe from shifting.

[0010] Compared with existing technologies, the advantages of this utility model are as follows: Under the action of screws and locking collars, the pipe fitting body axially clamps the pipe, thus ensuring a secure connection between the pipe fitting and the pipe. Furthermore, the user can remove the screws to adjust the connection between the pipe and the fitting, facilitating easy disassembly and adjustment. Additionally, a gasket is provided between the pipe fitting body and the pipe. When the screw presses against the outer wall of the pipe, it causes the pipe to move away from the screw; the gasket prevents this movement, ensuring concentricity between the pipe and the fitting, and thus improving the connection effect. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model (pipe joint and pipe connection);

[0012] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0013] Figure 3 This is an exploded view of an embodiment of the present utility model;

[0014] Figure 4 This is a cross-sectional view of an embodiment of the present invention (pipe fitting and pipe connection). Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figures 1-4The image shown is the preferred embodiment of this utility model.

[0017] The pipe fitting in this embodiment includes a fitting body 1 with two receiving interfaces 11. A locking collar 2 is fitted on the receiving interface 11. The fitting body 1 has a locking section 14 at the end of the receiving interface 11 for installing the locking collar 2. The locking collar 2 has three first threaded holes 21 spaced apart circumferentially. The three first threaded holes 21 are spaced apart on one side of the locking collar 2. The locking section 14 has second threaded holes 12 corresponding to the first threaded holes 21. The screw 3 passes through the first threaded holes 21 and the second threaded holes 12 in sequence to abut against the outer wall of the pipe 6. A gasket 4 is also provided between the fitting body 1 and the pipe 6. The gasket 4 is located on the side away from the first threaded holes 21. The gasket 4 is an arc-shaped metal sheet. The gasket 4 can prevent the pipe 6 from moving under the action of the screw 3, thereby preventing the pipe 6 from shifting to one side and causing poor concentricity.

[0018] In addition, in this embodiment, the receiving interface 11 extends outward in the circumferential direction to form an annular groove 13. A sealing ring 5 is provided in the annular groove 13. Under the action of the locking collar 2, the sealing ring 5 can seal the gap between the connector body 1 and the pipe 6. The annular groove 13 is arranged adjacent to the locking section 14. Under the action of the locking collar 2, the locking section 14 can better drive the sealing ring 5 to deform.

[0019] The workflow of this embodiment is as follows: First, insert the pipe 6 into the receiving interface 11 of the connector body 1, place the gasket 4 between the pipe 6 and the connector body 1, and position the gasket 4 on the side away from the second threaded hole 12 of the connector body 1; then, put the locking collar 2 on the locking section 14 of the connector body 1, so that each first threaded hole 21 is aligned with its corresponding second threaded hole 12; then, insert each screw 3 into the first threaded hole 21 and the second threaded hole 12 in sequence to abut against the outer wall of the pipe 6, thereby driving the locking collar 2 to be fixed on the locking section 14 of the connector body 1, and the sealing ring 5 can seal the gap between the connector body 1 and the pipe 6 under the action of the locking collar 2; finally, weld at the connection between the pipe 6 and the connector body 1.

Claims

1. A gas lock union comprising a union body (1) having at least two receiving ports (11), characterized in that: A locking ring (2) is sleeved on the adapter (11), a plurality of first threaded holes (21) are arranged on the locking ring (2) at intervals in the circumferential direction, a second threaded hole (12) corresponding to the first threaded hole (21) is arranged on the adapter body (1), a screw (3) passes through the first threaded hole (21) and the second threaded hole (12) in sequence to abut against the outer wall of the pipeline (6), and a gasket (4) is further arranged between the adapter body (1) and the pipeline (6).

2. The gas lock tube coupling according to claim 1, wherein: The first threaded hole (21) is arranged on one side of the locking ring (2), and the gasket (4) is arranged on the side away from the first threaded hole (21).

3. The gas lock tube coupling of claim 1, wherein: The adapter (11) extends outward in the circumferential direction to form an annular groove (13), and a sealing ring (5) is arranged in the annular groove (13), and the sealing ring (5) can seal the gap between the adapter body (1) and the pipeline (6) under the action of the locking ring (2).

4. The gas lock tube coupling according to claim 3, wherein: The adapter body (1) is provided with a locking section (14) for mounting the locking ring (2) at the end of the adapter (11), the second threaded hole (12) is arranged on the locking section (14), and the annular groove (13) is arranged adjacent to the locking section (14).

5. The gas service union as defined in claim 1, wherein: The gasket (4) is an arc-shaped metal sheet.

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