Temporary plugging mechanism for gas pipe

Abstract

The utility model provides a kind of gas pipe temporary plugging mechanism, including plug, plugging cap, limit ring, internal thread nut and gas pipe, wherein: the plug is inserted and installed in the inside of one end of gas pipe, the limit ring is sleeved in one of pipe groove outside gas pipe, the internal thread nut is sleeved in gas pipe outside, and is threadedly connected with plug;The overall setting of the utility model can carry out multiple sealing plugging to one end of gas pipe, so as to fully guarantee the safety and reliability in overall use process.

Description

Technical Field

[0001] This utility model relates to the field of gas pipe fittings, and in particular to a temporary gas pipe sealing mechanism. Background Technology

[0002] Temporary gas pipeline sealing devices are indispensable specialized equipment in gas pipeline operations, with applications covering various stages including gas pipeline construction, emergency repairs, pipeline modification, and maintenance. During gas pipeline construction, whether laying and connecting new pipelines or making partial modifications and upgrades to existing pipelines, it may be necessary to temporarily block gas flow in specific pipeline sections.

[0003] However, existing temporary gas pipe sealing mechanisms have limited sealing capabilities during use, and localized wear can lead to accidental leaks, posing a safety hazard.

[0004] Therefore, it is essential to invent a temporary gas pipe sealing mechanism. Utility Model Content

[0005] To solve the above-mentioned technical problems, the present invention provides a temporary gas pipe sealing mechanism. The technical solution adopted is as follows: a temporary gas pipe sealing mechanism includes a plug, a sealing cap, a limiting ring, an internal thread nut, and a gas pipe, wherein: the plug is inserted and installed inside one end of the gas pipe, the limiting ring is sleeved in one of the pipe grooves outside the gas pipe, and the internal thread nut is sleeved on the outside of the gas pipe and threadedly connected to the plug.

[0006] The plug includes a sealing cap and a sealing core. The sealing core is coaxially and fixedly installed inside the opening of the sealing cap. The sealing core is inserted and removed into the inside of one end of the gas pipe. The limiting ring is in contact with the sealing cap.

[0007] The sealing cap is fitted onto the outside of one end of the gas pipe and makes close contact with the outer surface of the gas pipe;

[0008] One end of the internal thread nut is provided with a constriction;

[0009] The inner diameter of the constriction is smaller than the diameter of the sealing ring, and the inner diameter of the constriction corresponds to the diameter of the gas pipe.

[0010] The sealing cap has an external threaded sleeve on its outer surface that corresponds to the internal threaded nut, and the sealing cap is connected to the inside of the internal threaded nut through the external threaded sleeve.

[0011] The inner surface of the sealing cap is provided with a plurality of sealing rings corresponding to the grooves on the outer surface of the gas pipe, and the sealing rings are engaged in the corresponding grooves.

[0012] The sealing core includes a sealing column and a telescopic airbag. One end of the sealing column is fixedly installed inside the opening of the sealing cap, and the other end of the sealing column is fixedly connected to one end of the telescopic airbag. The diameter of the sealing column is the same as the inner diameter of the gas pipe. The diameter of the telescopic airbag in its natural state is smaller than the diameter of the sealing column, and the diameter of the telescopic airbag in its contracted state is larger than the diameter of the sealing column. The sealing column and the telescopic airbag are inserted into one end of the gas pipe.

[0013] The limiting ring includes a semi-circular metal piece one and a semi-circular metal piece two, which are detachably connected and are engaged in one of the tube grooves.

[0014] The sealing ring is made of rubber.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] The overall design of this utility model can provide multiple seals to one end of the gas pipe, thereby fully ensuring safety and reliability during overall use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall gas pipe sealing structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the overall partial cross-sectional structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the overall exploded structure of this utility model.

[0020] Figure 4 This is a partial cross-sectional view of the sealing cap of this utility model.

[0021] In the picture:

[0022] 1. Sealing cap; 2. Sealing post; 3. Telescopic airbag; 4. External threaded sleeve; 5. Sealing ring; 6. Semicircular metal piece one; 7. Semicircular metal piece two; 8. Internal threaded nut; 9. Closure; 10. Gas pipe; 11. Pipe groove. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0025] The present invention will be further described below with reference to the accompanying drawings: Example

[0026] Reference Figure 1-4 A temporary gas pipe sealing mechanism includes a plug, a sealing cap 1, a limiting ring, an internal thread nut 8, and a gas pipe 10, wherein: the plug is inserted and installed inside one end of the gas pipe 10, the limiting ring is sleeved in one of the pipe grooves 11 outside the gas pipe 10, and the internal thread nut 8 is sleeved on the outside of the gas pipe 10 and threadedly connected to the plug.

[0027] Specifically, the plug includes a sealing cap 1 and a sealing core. The sealing core is coaxially fixed inside the opening of the sealing cap 1. The sealing core is inserted and inserted into the inside of one end of the gas pipe 10 and is in close contact with the inner surface of the gas pipe 10. The limiting ring is in contact with the sealing cap 1. With this structure, one end of the gas pipe 10 can be double-sealed from the inside to the outside.

[0028] Specifically, the sealing cap 1 is fitted onto the outside of one end of the gas pipe 10 and is in close contact with the outer surface of the gas pipe 10;

[0029] Specifically, the sealing cap 1 is made of elastic plastic material, which has both support and a certain degree of toughness;

[0030] Specifically, one end of the internal thread nut 8 is provided with a constriction 9;

[0031] Specifically, the inner diameter of the constriction 9 is smaller than the diameter of the sealing ring 5, and the inner diameter of the constriction 9 corresponds to the diameter of the gas pipe 10. Through the setting of the constriction 9 and the structure, after the internal thread nut 8 is sleeved on the gas pipe 10, the sealing ring 5 can block and limit the internal thread nut 8, preventing the internal thread nut 8 from falling off the gas pipe 10.

[0032] If the gas pipe 10 is a 1 / 4-point pipe, the inner diameter of the constriction 9 is the same as the diameter of the gas pipe 10.

[0033] Specifically, the outer surface of the sealing cap 1 is provided with an external thread sleeve 4 corresponding to the internal thread nut 8, and the sealing cap 1 is internally connected to the internal thread nut 8 through the external thread sleeve 4;

[0034] The external threaded sleeve 4 is made of metal to better connect with the internal threaded nut 8 and ensure their strength.

[0035] Specifically, the inner surface of the sealing cap 1 is provided with several sealing rings 5 ​​corresponding to the pipe grooves 11 on the outer surface of the gas pipe 10. The sealing rings 5 ​​are stuck in the corresponding pipe grooves 11. The sealing rings 5 ​​are made of rubber so as to form a third sealing structure between the sealing rings 5 ​​and the pipe grooves 11.

[0036] Specifically, the sealing core includes a sealing column 2 and a telescopic airbag 3. One end of the sealing column 2 is fixedly installed inside the opening of the sealing cap 1, and the other end of the sealing column 2 is fixedly connected to one end of the telescopic airbag 3. The diameter of the sealing column 2 is the same as the inner diameter of the gas pipe 10. The diameter of the telescopic airbag 3 in its natural state is smaller than the diameter of the sealing column 2, and the diameter of the telescopic airbag 3 in its contracted state is larger than the diameter of the sealing column 2. The sealing column 2 and the telescopic airbag 3 are inserted into one end of the gas pipe 10.

[0037] With this structure, when the gas pipe 10 is inserted, the sealing column 2 is in close contact with the inner surface of the gas pipe 10, and the telescopic airbag 3 will not come into contact with the gas pipe 10, thus avoiding wear of the telescopic airbag 3 and improving the sealing ability and service life of the telescopic airbag 3.

[0038] Specifically, the limiting ring includes a semi-circular metal piece 6 and a semi-circular metal piece 7. The semi-circular metal piece 6 and the semi-circular metal piece 7 are detachably connected. The semi-circular metal piece 6 and the semi-circular metal piece 7 are locked in one of the tube grooves 11 so as to be disassembled from the tube groove 11.

[0039] In this embodiment, when in use, first put the internal thread nut 8 on the outside of the gas pipe 10, then insert the sealing core into the inside of the end of the gas pipe 10 that needs to be sealed, and put the sealing cap 1 on the outside of the gas pipe 10. Then, put the semi-circular metal piece 1 6 and the semi-circular metal piece 2 7 into the pipe groove 11 near the end of the sealing cap 1, and then rotate the internal thread nut 8 clockwise to make the internal thread nut 8 and the external thread sleeve 4 tightly connected together.

[0040] In this way, the sealing column 2 forms the first seal on the interior of one end of the gas pipe 10;

[0041] The sealing cap 1 forms a second seal on the outside of the gas pipe 10;

[0042] A third sealing structure is formed in the groove 11 of the tube clamping ring 5;

[0043] When there is pressure inside the gas pipe 10, the pressure will act on the telescopic air bag 3, forcing the telescopic air bag 3 to contract. The telescopic air bag 3 contracts and its diameter increases, making it in close contact with the inner wall of the gas pipe 10, forming a fourth seal.

[0044] Finally, the inner thread nut 8 and the outer thread sleeve 4 form the fifth seal.

[0045] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A temporary gas pipe sealing mechanism, characterized in that: It includes a plug, a sealing cap (1), a limiting ring, an internal thread nut (8), and a gas pipe (10), wherein: the plug is inserted and installed inside one end of the gas pipe (10), the limiting ring is sleeved in one of the pipe grooves (11) outside the gas pipe (10), and the internal thread nut (8) is sleeved outside the gas pipe (10) and threadedly connected to the plug; The plug includes a plug cap (1) and a plug core. The plug core is coaxially fixed inside the opening of the plug cap (1). The plug core is inserted and inserted into the inside of one end of the gas pipe (10). The limiting ring is in contact with the plug cap (1). The sealing cap (1) is fitted onto the outside of one end of the gas pipe (10) and is in close contact with the outer surface of the gas pipe (10); One end of the internal thread nut (8) is provided with a constriction (9); The inner diameter of the constriction (9) is smaller than the diameter of the sealing ring (5).

2. The temporary gas pipe sealing mechanism as described in claim 1, characterized in that: The sealing cap (1) has an external thread sleeve (4) on its outer surface that corresponds to the internal thread nut (8). The sealing cap (1) is connected to the internal thread nut (8) through the external thread sleeve (4).

3. A temporary gas pipe sealing mechanism as described in claim 2, characterized in that: The inner surface of the sealing cap (1) is provided with a plurality of sealing rings (5) corresponding to the pipe grooves (11) on the outer surface of the gas pipe (10), and the sealing rings (5) are stuck in the corresponding pipe grooves (11).

4. A temporary gas pipe sealing mechanism as described in claim 1, characterized in that: The sealing core includes a sealing column (2) and a telescopic airbag (3). One end of the sealing column (2) is fixedly installed inside the opening of the sealing cap (1), and the other end of the sealing column (2) is fixedly connected to one end of the telescopic airbag (3). The sealing column (2) and the telescopic airbag (3) are inserted into one port of the gas pipe (10).

5. A temporary gas pipe sealing mechanism as described in claim 1, characterized in that: The limiting ring includes a semi-circular metal sheet one (6) and a semi-circular metal sheet two (7), which are detachably connected and are locked in one of the tube grooves (11).

6. A temporary gas pipe sealing mechanism as described in claim 3, characterized in that: The sealing ring (5) is made of rubber.

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