Union assembly

Abstract

The utility model discloses a union assembly which comprises a union pipeline, a shoulder blocking pipe is arranged below the union pipeline, a union female head body is arranged at the bottom of the shoulder blocking pipe, and a connector body is arranged on the end portion of the shoulder blocking pipe and the surface of the union female head body in a sleeved mode. A first sealing ring arranged on the surface of the shoulder blocking pipe in a sleeving mode is arranged on the top of the union female head body. The first sealing ring, the second sealing ring and the extrusion abutting ring are arranged on the surface of the shoulder blocking pipe in a sleeved mode, then the union female head body at the end of the shoulder blocking pipe is inserted into the connector body, the limiting embedded piece is operated to be installed in an inner cavity of the annular cavity, and then the union pipeline is lifted upwards. The first sealing ring above the union female head body abuts against the lower portion of the limiting embedded piece, then the second sealing ring is plugged into the inner cavity of the union female head body and abuts against the upper portion of the limiting embedded piece, and then the extrusion abutting ring is beaten downwards through a tool so that the extrusion abutting ring can be extruded on the second sealing ring and abut against the top of the union female head body.

Description

Technical Field

[0001] This utility model belongs to the field of union connector technology, and in particular relates to a union component. Background Technology

[0002] A union joint is a mechanical component used for jointing. The product is widely used in various high-pressure fluid operations and equipment matching, such as oilfield drilling, cementing, logging, oil testing, acid fracturing, coiled tubing and sand control operations, and offshore platforms.

[0003] Unions, also known as pipe fittings or unions, are common pipe connectors that allow for easy installation and disassembly. They connect two pipes, and the connection between the union female and the fitting is typically rotatable. To further enhance the sealing at the connection point, we have designed a union assembly. This assembly uses a double-layer sealing ring between the union female and the fitting, which, in conjunction with the compression of the outer sealing ring, improves the sealing effect between the union female and the fitting. Utility Model Content

[0004] The purpose of this utility model is to provide a union assembly that uses a double-layer sealing ring between the union female head and the connector, which, in conjunction with the compression of the outer sealing ring, improves the sealing effect between the union female head and the connector, thereby solving the aforementioned background technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A union assembly includes a union pipe, a shoulder tube is provided below the union pipe, a union female head body is provided at the bottom of the shoulder tube, a connector body is sleeved on the end of the shoulder tube and the surface of the union female head body, a sealing ring one sleeved on the surface of the shoulder tube is provided at the top of the union female head body, an annular cavity is opened at the top of the inner cavity of the connector body above the sealing ring one, a limiting insert is detachably installed in the inner cavity of the annular cavity, a sealing ring two sleeved on the surface of the shoulder tube is provided above the limiting insert, the top of the sealing ring two extends to the top of the connector body, a compression abutment ring is sleeved on the surface of the shoulder tube, the bottom of the compression abutment ring presses against the top of the sealing ring two and abuts against the top of the connector body, a union male head is provided at the top of the union pipe, and a sealing gasket is installed in the inner cavity of the union male head.

[0006] Preferably, the surface of the shoulder tube has an annular limiting cavity located above the extrusion ring, and an embedded iron wire is installed in the inner cavity of the annular limiting cavity, with the bottom of the embedded iron wire fitting against the extrusion ring.

[0007] Preferably, the bottom of the sealing gasket surface is provided with a limiting edge, and the inner cavity of the male connector is provided with a limiting groove that matches the limiting edge.

[0008] Preferably, the inner wall of the compression ring is provided with multiple anti-slip protrusions.

[0009] Preferably, the surface of the connector body is provided with three integrally formed protrusions arranged in a ring array.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model involves fitting a sealing ring 1, a sealing ring 2, and a compression abutment ring onto the surface of a shoulder tube. Then, the union head body at the end of the shoulder tube is inserted into the connector body. Next, a limiting insert is installed in the inner cavity of the annular cavity. Then, the union tube is pulled upward so that the sealing ring 1 above the union head body rests against the bottom of the limiting insert. Next, the sealing ring 2 is inserted into the inner cavity of the connector body and rests against the top of the limiting insert. Then, the compression abutment ring is tapped downward with a tool so that the compression abutment ring is pressed against the sealing ring 2 and against the top of the connector body. This achieves the purpose of using a double-layer sealing ring between the union head and the connector, which, together with the compression of the outer sealing ring, improves the sealing effect between the union head and the connector.

[0012] 2. By using the combination of the limiting edge and the limiting groove, this utility model ensures that after the sealing gasket is installed in the inner cavity of the union male head, the limiting edge inserted into the inner cavity of the limiting groove plays a limiting role in the sealing gasket, preventing the sealing gasket from moving and falling off at will. Attached Figure Description

[0013] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention.

[0014] Figure 1 This is a perspective view of one embodiment of the present utility model;

[0015] Figure 2 This is a front cross-sectional view of a partial structure of one embodiment of the present invention;

[0016] Figure 3 This is a three-dimensional disassembled schematic diagram of one embodiment of the present utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Union pipe, 2. Shoulder pipe, 3. Union female head body, 4. Connector body, 5. Sealing ring one, 6. Annular cavity, 7. Limiting insert, 8. Sealing ring two, 9. Compression abutment ring, 10. Annular limiting cavity, 11. Embedded wire, 12. Union male head, 13. Sealing gasket, 14. Limiting edge, 15. Limiting groove, 16. Anti-slip convex strip. Detailed Implementation

[0019] In the following description, embodiments of the union component of this utility model will be described with reference to the accompanying drawings.

[0020] Figure 1-3 This invention illustrates a union assembly according to an embodiment of the present invention, comprising a union pipe 1, a shoulder tube 2 disposed below the union pipe 1, a union head body 3 disposed at the bottom of the shoulder tube 2, a connector body 4 fitted onto the end of the shoulder tube 2 and the surface of the union head body 3, three integrally formed protrusions arranged in a circular array on the surface of the connector body 4, a sealing ring 5 fitted onto the surface of the shoulder tube 2 disposed at the top of the union head body 3, an annular cavity 6 located above the sealing ring 5 being formed at the top of the inner cavity of the connector body 4, a limiting insert 7 being detachably installed in the inner cavity of the annular cavity 6, a second sealing ring 8 fitted onto the surface of the shoulder tube 2 disposed above the limiting insert 7, the top of the second sealing ring 8 extending to the top of the connector body 4, a compression abutment ring 9 fitted onto the surface of the shoulder tube 2, and multiple anti-slip protrusions 16 provided on the inner wall of the compression abutment ring 9. The bottom of the compression ring 9 presses against the top of the sealing ring 8 and abuts against the top of the connector body 4. The surface of the shoulder tube 2 is provided with an annular limiting cavity 10 located above the compression ring 9. An embedded wire 11 is installed in the inner cavity of the annular limiting cavity 10. The bottom of the embedded wire 11 is in contact with the compression ring 9. A union male head 12 is provided at the top of the union pipe 1. A sealing gasket 13 is installed in the inner cavity of the union male head 12. A limiting edge 14 is provided at the bottom of the surface of the sealing gasket 13. A limiting groove 15 that matches the limiting edge 14 is provided in the inner cavity of the union male head 12. Through the cooperation of the limiting edge 14 and the limiting groove 15, it can be ensured that after the sealing gasket 13 is installed in the inner cavity of the union male head 12, the limiting edge 14 is inserted into the inner cavity of the limiting groove 15 to limit the sealing gasket 13 and prevent the sealing gasket 13 from moving and falling off at will.

[0021] Working principle: When using this utility model, a sealing ring 5, a limiting insert 7, a sealing ring 8, and a pressing abutment 9 are fitted onto the surface of the shoulder tube 2. Then, the union head body 3 at the end of the shoulder tube 2 is inserted into the connector body 4. Next, the ends of the two limiting inserts 7 are moved towards the middle by a tool. After the limiting inserts 7 are aligned with the annular cavity 6, the elasticity of the limiting inserts 7 will be installed in the inner cavity of the annular cavity 6. Then, the union tube 1 is pulled upward so that the sealing ring 5 above the union head body 3 abuts against the lower part of the limiting insert 7. Then, the sealing ring 8 is inserted into the inner cavity of the connector body 4 and abuts against the upper part of the limiting insert 7. Then, the pressing abutment 9 is tapped downward by a tool. The friction of the anti-slip protrusion 16 makes the pressing abutment 9 firmly pressed against the sealing ring 8 and against the top of the connector body 4. Finally, the embedded wire 11 is embedded in the inner cavity of the annular limiting cavity 10 and abuts against the upper part of the pressing abutment 9 to ensure firmness.

[0022] In summary: This union assembly, by fitting a sealing ring 5, a sealing ring 8, and a compression abutment ring 9 onto the surface of the shoulder tube 2, then inserting the union head body 3 at the end of the shoulder tube 2 into the connector body 4, then operating the limiting insert 7 to install in the inner cavity of the annular cavity 6, then pulling the union pipe 1 upward so that the sealing ring 5 above the union head body 3 abuts against the lower part of the limiting insert 7, then inserting the sealing ring 8 into the inner cavity of the connector body 4 and abutting against the upper part of the limiting insert 7, and then tapping the compression abutment ring 9 downward with a tool so that the compression abutment ring 9 is pressed against the sealing ring 8 and against the top of the connector body 4, achieves the purpose of using a double-layer sealing ring between the union head and the connector, and improving the sealing effect between the union head and the connector by compressing the outer sealing ring.

Claims

1. A union component, characterized in that, The system includes a union pipe (1), a shoulder pipe (2) below the union pipe (1), a union female head body (3) at the bottom of the shoulder pipe (2), a connector body (4) fitted onto the end of the shoulder pipe (2) and the surface of the union female head body (3), a sealing ring (5) fitted onto the surface of the shoulder pipe (2) at the top of the union female head body (3), and an annular cavity (6) located above the sealing ring (5) at the top of the inner cavity of the connector body (4). The inner cavity of the annular cavity (6) is detachably installed. A limiting insert (7) is installed, and a sealing ring 2 (8) is provided above the limiting insert (7) and sleeved on the surface of the shoulder tube (2). The top of the sealing ring 2 (8) extends to the top of the connector body (4). A compression abutment ring (9) is sleeved on the surface of the shoulder tube (2). The bottom of the compression abutment ring (9) presses against the top of the sealing ring 2 (8) and abuts against the top of the connector body (4). A union male connector (12) is provided at the top of the union pipe (1). A sealing gasket (13) is installed in the inner cavity of the union male connector (12).

2. A union component according to claim 1, characterized in that, The surface of the shoulder tube (2) is provided with an annular limiting cavity (10) located above the extrusion ring (9). An embedded wire (11) is installed in the inner cavity of the annular limiting cavity (10), and the bottom of the embedded wire (11) is in contact with the extrusion ring (9).

3. A union component according to claim 2, characterized in that, The bottom of the surface of the sealing gasket (13) is provided with a limiting edge (14), and the inner cavity of the male head (12) is provided with a limiting groove (15) that is adapted to the limiting edge (14).

4. A union component according to claim 3, characterized in that, The inner wall of the compression ring (9) is provided with multiple anti-slip protrusions (16).

5. A union component according to claim 4, characterized in that, The surface of the connector body (4) is provided with three integrally formed protrusions arranged in a ring array.

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