Casing pipe quick-connection sealing structure

Abstract

The utility model discloses a casing pipe quick connection sealing structure which comprises a casing pipe arranged between a pair of connectors to achieve bridge connection, protruding sealing structures extending towards the connectors are arranged on the casing pipe, and the protruding sealing structures are distributed on the peripheral face of the casing pipe in a circumferential mode. The protruding sealing structure is tightly attached to the connector to form sealing. A protruding pier head sealing structure is arranged at the end of the sleeve, the steel pipe deforms to form a sealing structure through the cold heading technology, the sealing structure is matched with a nut thread structure to be fixed, an original clamping sleeve component is replaced, and the durability of the joint connecting position is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe joint sealing structures, and in particular to a quick-connect sealing structure for sleeves. Background Technology

[0002] High-pressure gas sources typically enter gas pipeline systems through connectors. The connectors and pipelines are two independent components, and gaps at their connection can easily lead to leaks. A common practice is to use ferrules to assist in sealing; the clamping of a nut compresses multiple layers of internal sealing clips to form a seal. However, ferrules are prone to wear during pipe assembly and disassembly, and the internal non-metallic structure is subject to wear and tear under prolonged high temperature and pressure, resulting in poor overall durability. Utility Model Content

[0003] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0004] A quick-connect sealing structure for a sleeve includes a sleeve placed between a pair of connectors to achieve bridging. A protruding sealing structure is provided on the sleeve and extends toward the connector. The protruding sealing structure is distributed in a circumferential shape on the outer circumferential surface of the sleeve. The protruding sealing structure is tightly fitted with the connector to form a seal.

[0005] In a preferred embodiment of this utility model, the protruding sealing structure is located at the end of the sleeve, and the protruding sealing structure is integral with the sleeve.

[0006] In a preferred embodiment of the present invention, a locking component is further provided on the sleeve, and the locking component locks with the joint to prevent the sleeve from coming out of the joint.

[0007] In a preferred embodiment of the present invention, the locking component is a nut sleeved on the sleeve, and the nut is axially limited by the protruding sealing structure and cannot be detached from the sleeve.

[0008] In a preferred embodiment of this utility model, a threaded structure is arranged on the end of the connector, and the nut is locked to the connector through the threaded structure.

[0009] In a preferred embodiment of the present invention, the protruding sealing structure has a flange extending toward the joint, and the side of the flange is connected to the joint to form a limiting position.

[0010] In a preferred embodiment of the present invention, a first inclined surface and a second inclined surface are respectively provided on the side of the flange. The first inclined surface matches the inner wall of the interface of the connector, thereby implementing tension as the sleeve is gradually inserted into the connector.

[0011] In a preferred embodiment of this invention, the slope of the first inclined plane is less than that of the second inclined plane.

[0012] The beneficial effects of this utility model are as follows:

[0013] The present invention provides a quick-connect sealing structure for a sleeve, which features a protruding sealing head at the end of the sleeve. The steel pipe is deformed by cold forging to form a sealing structure, which is then fixed in conjunction with a nut thread structure, thus replacing the original ferrule component and improving the durability of the joint connection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a cross-sectional view of the present invention. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The above description is for the purpose of simplifying the description of this utility model and does 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, it should not be construed as a limitation of this utility model.

[0017] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature, but do not exclude the presence of one or more other features.

[0018] When a component is described in the specification as being "on", "fixed" to, "connected" to, or "joined" to another component, the component may be directly located on, fixed to, connected to, joined to, or in contact with the other component, or there may be an intermediate component present.

[0019] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0020] Figure 1A quick-connect sealing structure for a sleeve is demonstrated. The sleeve 20 is used to bridge the gas path when inserted into at least one pair of connectors 10. A protruding sealing structure 23 is arranged on the outer circumferential surface of the sleeve end 21. This structure is characterized by an increased outer diameter of the end portion, which causes the sleeve 20 to tighten and seal when it is fitted with the connector 10. The protruding sealing structure 23 is circumferentially arranged around the outer circumferential surface of the sleeve end 21 and has an upwardly extending flange 23. After the sleeve 20 and the structure 10 are connected, the flange 23 abuts against the interface of the connector end 11 and is positioned accordingly. A first inclined surface 24 and a second inclined surface 25 that transition with the outer wall of the sleeve 20 are respectively arranged on both sides of the flange 23. The protruding sealing structure 23 and the sleeve 20 are integrally formed by a cold forging process, that is, the protruding sealing structure 23 is formed by the deformation of the sleeve 20 itself.

[0021] In a preferred embodiment, the inclination angle of the first inclined surface 24 is designed to be smaller than that of the second inclined surface 25, so that when inserted into the connector 10, the outer diameter of the sleeve end 21 gradually increases, thereby reducing the difficulty of operation.

[0022] A nut 30 is also fitted on the outside of the sleeve 20. The nut 30 is restricted by the flange 23 and can only slide axially on the sleeve 20 without being dislodged. A threaded structure is arranged on the outer circumferential surface of the connector end 11. The nut 30 is locked with the connector 10 through the threaded structure to prevent the sleeve 20 from coming out of the connector 10.

[0023] In another preferred embodiment, the protruding sealing structure 23 can be arranged at both ends of the sleeve 20 simultaneously.

Claims

1. A quick connect seal for a sleeve, comprising a sleeve positioned between a pair of fittings to effect bridging, wherein, The sleeve is provided with a protruding sealing structure extending towards the joint, which is circumferentially distributed on the outer circumferential surface of the sleeve, and tightly contacts the joint to form a seal.

2. A quick connect seal for a conduit as defined in claim 1, wherein, The protruding sealing structure is located at the sleeve end of the sleeve, and is integrated with the sleeve.

3. A quick connect seal for a conduit as defined in claim 2, wherein, The sleeve is further provided with a locking component, which is locked with the joint to prevent the sleeve from being pulled out of the joint.

4. A quick connect seal for a conduit as defined in claim 3, wherein, The locking component is a nut sleeved on the sleeve, which is axially limited by the protruding sealing structure and cannot be separated from the sleeve.

5. A quick connect seal for a conduit as defined in claim 4, wherein, A threaded structure is arranged on the end of the joint, and the nut is locked with the joint through the threaded structure.

6. A quick connect seal as claimed in any one of claims 1 to 5, wherein, The protruding sealing structure has a flange extending towards the joint, and the side of the flange is limited by the joint.

7. A quick connect seal for a conduit as defined in claim 6, wherein, First and second inclined surfaces are respectively arranged on the side of the flange, the first inclined surface matches the inner wall of the joint interface to implement tensioning during the gradual insertion of the sleeve into the joint.

8. A quick connect seal for a conduit as defined in claim 7, wherein, The slope of the first inclined surface is smaller than that of the second inclined surface.

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