Connector sealing structure of socket flexible steel pipe

Abstract

The utility model relates to the technical field of pipe connecting structures, in particular to a connector sealing structure of a socket flexible steel pipe, which comprises a steel pipe made of carbon steel, and a socket is arranged at the end of the steel pipe. According to the utility model, the butt joint seat on the outer wall of the limiting ring plate is in butt joint with the mounting seat on the outer wall of the socket, and then the second locking bolt is rotated, so that the insertion pipe is driven to gradually go deep into the socket, and the inclined surface ring on the outer wall of the insertion pipe can abut against the inclined surface part on the inner ring of the sealing rubber ring; according to the sealing device, the sealing rubber ring is arranged in the sealing groove, so that the protruding part of the sealing rubber ring can tightly abut against the inner wall of the sealing groove, the sealing performance of a steel pipe connector can be enhanced, the sealing rubber ring can be compressed to fill a gap, and it is guaranteed that water flow cannot leak out; the limiting ring plate is used for further sealing the end of the steel pipe to improve the sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe connection structures, in particular to an interface sealing structure for socket-and-spigot flexible steel pipes. Background Art

[0002] Socket connections are primarily used for cast iron pipes, concrete pipes, ceramic pipes, plastic pipes, and other pipes with socket joints. Socket pipes are categorized into two types: rigid and flexible. A rigid socket connection involves inserting the spigot into the socket. After alignment, the joint is caulked with caulking material and then sealed with a sealant. A flexible socket connection involves inserting a flexible rubber ring into the stopper on the spigot. Force is then applied to insert the spigot, creating a closed pipe that can accommodate a certain range of displacement and vibration.

[0003] Flexible connections can be used to connect ductile iron pipes, concrete pipes, ceramic pipes, plastic pipes, and other pipelines. Steel pipes, which are in high demand in the market, are typically connected using socket elbows, flanges, or other structures such as welding. These connection methods are complex, difficult to install, or have poor sealing effects, failing to meet operational requirements. Large-diameter water pipes are primarily connected on-site by butt welding. However, due to the limited space at the bottom of the trench, even the slightest deformation of the large-diameter pipe can result in significant misalignment of the pipe ends, making alignment difficult. Butt welding requires high technical skills, and the primary failure mode of water pipes is weld cracking. Utility Model Content

[0004] The purpose of the utility model is to provide an interface sealing structure for a socket-and-spigot flexible steel pipe to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A socket-and-spigot flexible steel pipe interface sealing structure, comprising:

[0007] Steel pipe, wherein the material of the steel pipe is carbon steel;

[0008] The socket is provided at the end of the steel pipe;

[0009] A sealing groove is provided in the inner ring of the receiving interface;

[0010] The sealing rubber ring is embedded in the sealing groove;

[0011] The inclined portion is provided in the inner ring of the sealing rubber ring;

[0012] The insertion tube is slidably inserted into the interior of the socket;

[0013] A bevel ring is fixedly sleeved on the outer wall of the insertion tube, and the bevel ring contacts the bevel portion;

[0014] The raised portion is arranged on the outer ring of the sealing rubber ring, and the raised portion contacts the inner wall of the sealing groove.

[0015] Furthermore, a first lining layer is fixedly provided on the inner wall of the steel pipe, and a second lining layer is fixedly provided on the inner wall of the insertion tube.

[0016] Furthermore, the material of the inner lining layer 1 and the inner lining layer 2 is epoxy resin.

[0017] Furthermore, four first lifting rings are fixedly connected to the outer wall of the steel pipe at equal intervals in an annular shape, and four second lifting rings are fixedly connected to the outer wall of the insertion tube at equal intervals in an annular shape.

[0018] Furthermore, a limiting ring plate is fixedly sleeved on the outer wall of the insertion tube, and a plurality of docking seats are fixedly connected to the outer wall of the limiting ring plate at equal intervals in a ring shape, and a corresponding mounting seat is provided on one side of each of the docking seats, and a positioning ring fixedly sleeved on the receiving interface is fixedly connected to the inner wall of the plurality of mounting seats, and a locking bolt 2 is screwed in the docking seat and screwed in with the mounting seat.

[0019] Furthermore, metal caps are symmetrically fixedly arranged on the outer wall of the steel pipe.

[0020] Furthermore, a connecting block is fixedly connected to the bottom of the steel pipe, two ferrules are symmetrically connected to the connecting block for rotation, the ends of the two ferrules are fixedly connected to fixing seats, and a locking bolt is screwed in connection between the two fixing seats.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] When the end of the pipe is in contact with the flange, the sealing ring is pressed against the flange, and the flange is pressed against the flange to prevent water from leaking out. When the pipe is in contact with the flange, the sealing ring is pressed against the flange, and the flange is pressed against the flange to prevent water from leaking out. When the pipe is in contact with the flange, the sealing ring is pressed against the flange, and the flange is pressed against the flange to prevent water from leaking out. When the pipe is in contact with the flange, the sealing ring is pressed against the flange, and the flange is pressed against the flange

[0023] 2. By arranging inner lining layer 1 and inner lining layer 2 on the inner walls of the steel pipe and the inserted pipe, the inner lining layer made of epoxy resin can increase the corrosion resistance of the pipeline and reduce the wear and corrosion of the inner wall of the steel pipe by water flow. By fixing a metal cap on the outer wall of the steel pipe, the electrons on the steel pipe can be transferred to the earth, so that the metal cap and the steel pipe form an equipotential, which solves the grounding problem of underground pipe corridor to prevent electric shock and prolongs the service life of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the inserted pipe end in the utility model;

[0027] Figure 4 It is a structural diagram of the steel pipe and the socket in the utility model.

[0028] In the figure: 100, steel pipe; 101, socket; 102, sealing groove; 103, inner lining layer 1; 104, positioning ring; 105, mounting seat; 106, connecting block; 107, ferrule; 108, fixing seat; 109, locking bolt 1; 110, metal cap; 111, lifting ring 1; 200, insertion tube; 201, lifting ring 2; 202, bevel ring; 203, inner lining layer 2; 204, limiting ring plate; 205, docking seat; 206, locking bolt 2; 300, sealing rubber ring; 301, bevel portion; 302, raised portion. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-4In an embodiment of the present invention, a socket-and-spigot joint sealing structure of a flexible steel pipe includes: a steel pipe 100, wherein the material of the steel pipe 100 is carbon steel; a socket 101 is arranged at the end of the steel pipe 100; a sealing groove 102 is opened in the inner ring of the socket 101; a sealing rubber ring 300 is embedded and sleeved in the sealing groove 102; a sloped portion 301 is arranged in the inner ring of the sealing rubber ring 300; an insertion tube 200 is slidably inserted into the interior of the socket 101; a sloped ring 202 is fixedly sleeved on the outer wall of the insertion tube 200, and the sloped ring 202 conflicts with the sloped portion 301; a protrusion 302 is arranged on the outer ring of the sealing rubber ring 300, and the protrusion 302 conflicts with the inner wall of the sealing groove 102. A limiting ring plate 204 is fixedly sleeved on the outer wall of the insertion tube 200, and a plurality of docking seats 205 are fixedly connected to the outer wall of the limiting ring plate 204 at equal intervals in a ring shape. One side of each of the plurality of docking seats 205 is provided with a mounting seat 105 corresponding thereto, and a positioning ring 104 fixedly sleeved on the receiving interface 101 is fixedly connected to the inner wall of the plurality of mounting seats 105, and a locking bolt 206 screwed in connection with the mounting seat 105 is screwed in the docking seat 205.

[0031] Specifically, a socket 101 is provided at the end of the steel pipe 100, and a sealing groove 102 is provided on the inner ring of the socket 101, and a sealing rubber ring 300 is embedded in the sealing groove 102. When docking, the end of the insertion tube 200 can be inserted into the socket 101, and the docking seat 205 on the outer wall of the limiting ring plate 204 and the mounting seat 105 on the outer wall of the socket 101 are connected relative to each other, and then the locking bolt 206 is rotated to drive the insertion tube 200 to gradually penetrate into the socket 101, so that The beveled ring 202 on the outer wall of the insertion tube 200 can come into contact with the beveled portion 301 on the inner ring of the sealing rubber ring 300, so that the raised portion 302 of the sealing rubber ring 300 can be tightly abutted against the inner wall of the sealing groove 102, thereby strengthening the sealing performance at the interface of the steel pipe 100, so that the sealing rubber ring 300 can be compressed to fill the gap and ensure that water does not leak out. When the limiting ring plate 204 comes into contact with the end of the receiving interface 101, it stops rotating, and the limiting ring plate 204 is used to further seal the end of the steel pipe 100 to improve the sealing performance.

[0032] By providing the inner walls of the steel pipe 100 and the insertion pipe 200 with the inner lining layer 103 and the inner lining layer 203, the inner lining layer made of epoxy resin can increase the corrosion resistance of the pipeline and reduce the wear and corrosion of the inner wall of the steel pipe 100 caused by water flow. In addition, by fixing the metal cap 110 on the outer wall of the steel pipe 100, the electrons on the steel pipe 100 can be transferred to the earth, so that the metal cap 110 and the steel pipe 100 form an equipotential, thereby solving the grounding problem of preventing electric shock in underground pipe corridors and extending the service life of the steel pipe.

[0033] By rotating the two ferrules 107 and fitting them to the outer wall of the steel pipe 100, and then rotating the locking bolt 109 to bring the two fixing seats 108 closer, the ferrules 107 can fit the outer wall of the steel pipe 100, so that the two ferrules 107 clamp the inner wall of the steel pipe 100 and the outer wall of the insertion tube 200. Therefore, the connection of the water supply steel pipe does not require welding, and therefore there will be no weld cracking.

[0034] Example 1

[0035] like Figure 3-4 As shown, in this embodiment, an inner lining layer 103 is fixedly provided on the inner wall of the steel pipe 100, and an inner lining layer 203 is fixedly provided on the inner wall of the insert tube 200. The material of the inner lining layer 103 and the inner lining layer 203 is epoxy resin. Four lifting rings 111 are fixedly connected to the outer wall of the steel pipe 100 at equal intervals, and four lifting rings 201 are fixedly connected to the outer wall of the insert tube 200 at equal intervals. A metal cap 110 is symmetrically fixedly provided on the outer wall of the steel pipe 100. A connecting block 106 is fixedly connected to the bottom of the steel pipe 100. Two ferrules 107 are symmetrically connected to the connecting block 106. The ends of the two ferrules 107 are fixedly connected to a fixing seat 108, and a locking bolt 109 is screwed in between the two fixing seats 108.

[0036] In this embodiment, by providing inner lining layer 103 and inner lining layer 203 on the inner walls of the steel pipe 100 and the insertion pipe 200, the inner lining layer made of epoxy resin can increase the corrosion resistance of the pipeline and reduce the wear and corrosion of the inner wall of the steel pipe 100 caused by water flow. In addition, by fixing the metal cap 110 on the outer wall of the steel pipe 100, electrons on the steel pipe 100 can be transferred to the earth, so that the metal cap 110 and the steel pipe 100 form an equipotential, thereby solving the grounding problem of preventing electric shock in underground pipe corridors and extending the service life of the steel pipe.

[0037] By rotating the two ferrules 107 and fitting them to the outer wall of the steel pipe 100, and then rotating the locking bolt 109 to bring the two fixing seats 108 closer, the ferrules 107 can fit the outer wall of the steel pipe 100, so that the two ferrules 107 clamp the inner wall of the steel pipe 100 and the outer wall of the insertion tube 200. Therefore, the connection of the water supply steel pipe does not require welding, and therefore there will be no weld cracking.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0039] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A socket-and-spigot flexible steel pipe interface sealing structure, characterized in that: include: A steel pipe (100) made of carbon steel; A socket (101) is provided at the end of the steel pipe (100); A sealing groove (102) is provided in the inner ring of the receiving interface (101); A sealing rubber ring (300) is embedded and sleeved in the sealing groove (102); An inclined portion (301) is provided in the inner ring of the sealing rubber ring (300); An insertion tube (200) is slidably inserted into the interior of the receiving port (101); The bevel ring (202) is fixedly sleeved on the outer wall of the insertion tube (200), and the bevel ring (202) is in conflict with the bevel portion (301); The raised portion (302) is arranged on the outer ring of the sealing rubber ring (300), and the raised portion (302) is in conflict with the inner wall of the sealing groove (102).

2. The socket-and-spigot flexible steel pipe interface sealing structure according to claim 1, characterized in that: The inner wall of the steel pipe (100) is fixedly provided with an inner lining layer 1 (103), and the inner wall of the insertion pipe (200) is fixedly provided with an inner lining layer 2 (203).

3. The interface sealing structure of a socket-and-spigot flexible steel pipe according to claim 2, characterized in that: The material of the inner lining layer 1 (103) and the inner lining layer 2 (203) is epoxy resin.

4. The socket-and-spigot flexible steel pipe interface sealing structure according to claim 2, characterized in that: Four first hanging rings (111) are fixedly connected at equal intervals in an annular manner on the outer wall of the steel pipe (100), and four second hanging rings (201) are fixedly connected at equal intervals in an annular manner on the outer wall of the insertion tube (200).

5. The socket-and-spigot flexible steel pipe interface sealing structure according to claim 2, characterized in that: A limiting ring plate (204) is fixedly sleeved on the outer wall of the insertion tube (200), and a plurality of docking seats (205) are fixedly connected to the outer wall of the limiting ring plate (204) at equal intervals in an annular manner. One side of each of the plurality of docking seats (205) is provided with a mounting seat (105) corresponding thereto. A positioning ring (104) fixedly sleeved with the receiving interface (101) is fixedly connected to the inner wall of each of the plurality of mounting seats (105), and a locking bolt (206) screwed in connection with the mounting seat (105) is screwed in the docking seat (205).

6. The socket-and-spigot flexible steel pipe interface sealing structure according to claim 2, characterized in that: Metal caps (110) are symmetrically fixedly arranged on the outer wall of the steel pipe (100).

7. The socket-and-spigot flexible steel pipe interface sealing structure according to claim 2, characterized in that: The bottom of the steel pipe (100) is fixedly connected with a connecting block (106), and two ferrules (107) are symmetrically connected to the connecting block (106). The ends of the two ferrules (107) are fixedly connected with a fixing seat (108), and a locking bolt (109) is screwed and connected between the two fixing seats (108).

Images