Cable protection tube end head sealing structure

Abstract

This utility model discloses a cable protection pipe end sealing structure, including a sealing head body and a connecting post. The sealing head body is integrally formed from a first cylindrical shell and a second cylindrical shell. A first annular groove is provided on the inner end face of the first shell, and a second annular groove is provided on the second shell. A first sealing ring and a second sealing ring are respectively fixedly embedded in the first and second grooves. The connecting post is integrally formed from an externally threaded stud and an internally threaded sleeve. This sealing structure can seal the opening of the cable protection pipe, preventing mud and sand from entering the cable protection pipe before it is inserted into the line at the construction site. Furthermore, during storage or transportation, several sealing head bodies can be stacked together by screwing them together, avoiding the problem of compression deformation or damage caused by scattered placement of the sealing head bodies.

Description

Technical Field

[0001] This utility model belongs to the field of cable protection pipe technology, and in particular, it designs a cable protection pipe end sealing structure. Background Technology

[0002] MPP cable protection pipes are widely used as cable protection conduits. They effectively protect cables from external environmental erosion and damage, improving the safety and reliability of the power grid. When cable protection pipes are buried in deep trenches during construction, to prevent sand and soil from entering the pipes and causing unevenness, which could lead to the cable being punctured by sand and gravel during long-term use, the end openings of the cable protection pipes need to be sealed. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a cable protection pipe end sealing structure that can seal the end opening of the cable protection pipe and is easy to stack and place to prevent deformation and damage.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a cable protection pipe end sealing structure, including a sealing head body and a connecting column. The sealing head body is integrally formed by a first cylindrical shell and a second cylindrical shell. A first annular groove is provided on the inner end face of the first shell, and a second annular groove is provided on the second shell. A first sealing ring and a second sealing ring are respectively fixedly embedded in the first groove and the second groove.

[0005] The connecting post is integrally formed by a stud with an external thread structure and a sleeve with an internal thread structure. The outer diameter of the stud is matched with the inner diameter of the sleeve. The sleeve is coaxial and fixedly located at the center of the bottom of the second housing. The threaded hole at the bottom of the sleeve penetrates the bottom of the sleeve housing.

[0006] Preferably, the top of the stud extends 2-3 cm beyond the bottom of the first housing.

[0007] Preferably, the first housing and the second housing have the same wall thickness.

[0008] Preferably, the inner diameter of the first housing is 1.2-1.3 times the outer diameter of the second housing.

[0009] Preferably, the inlet end of the threaded hole mates with the bottom of the second housing to form a rounded corner structure.

[0010] Compared with existing technologies, the advantages of this utility model are: this sealing structure can seal the opening of the cable protection pipe, preventing mud and sand from entering the cable protection pipe before it is inserted into the line at the construction site. Furthermore, during storage or transportation, several sealing head bodies are stacked together by screwing them together, avoiding the problems of compression deformation or damage caused by scattered placement of the sealing head bodies. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a perspective view of the front side of this utility model.

[0013] Figure 2 This is a perspective view of the rear side of this utility model.

[0014] Figure 3 This is the front view of this utility model.

[0015] Figure 4 yes Figure 3 A sectional view along the AA direction.

[0016] Figure 5 It is a three-dimensional diagram of the installation structure of the sealing head body and the cable protection pipe.

[0017] Figure 6 This is a front view of the installation structure of the sealing head body and the cable protection pipe.

[0018] Figure 7 yes Figure 6 BB-direction sectional view.

[0019] Figure 8 It is a 3D view of the two sealing head main bodies stacked together by bolts.

[0020] Figure 9 This is a front view of two plug heads stacked together by bolts.

[0021] Figure 10 yes Figure 9 CC-direction sectional view. Detailed Implementation

[0022] The present invention will now be described in detail with reference to specific embodiments:

[0023] like Figures 1 to 10The cable protection pipe end sealing structure shown includes a sealing head body 1 and a connecting post 4. The sealing head body 1 is integrally formed from a first cylindrical shell 2 and a second cylindrical shell 3. A first annular groove 21 is provided on the inner end face of the first shell 2, and a second annular groove 31 is provided on the second shell 3. A first sealing ring and a second sealing ring are respectively fixedly embedded in the first groove 21 and the second groove 31.

[0024] The connecting post 4 is integrally formed by a stud 41 with an external thread structure and a sleeve 42 with an internal thread structure. The outer diameter of the stud 41 is matched with the inner diameter of the sleeve 42. The sleeve 42 is coaxial and fixedly positioned at the center of the bottom of the second housing 3. The threaded hole 43 at the bottom of the sleeve 42 penetrates the bottom of the sleeve 42.

[0025] The top of the stud 41 extends 2.3 cm beyond the bottom of the first housing 2 so that when the two sealing head bodies 1 are connected, the stud 41 of the lower sealing head body 1 can be screwed into the threaded sleeve 42 of the upper sealing head body 1, making the connection more secure.

[0026] The first shell 2 and the second shell 3 have the same wall thickness, so that the sealing head body 1 can be integrally cast and processed.

[0027] The inner diameter of the first housing 2 is 1.23 times the outer diameter of the second housing 3, so that the second housing 3 can be embedded in the first housing 2.

[0028] The inlet end of the threaded hole 43 and the bottom of the second housing 3 form a rounded corner structure, which serves as a guide when the stud 41 of the lower sealing head body 1 is screwed into the threaded sleeve 42 of the upper sealing head body 1.

[0029] When sealing the cable protection pipe 6, the second housing 3 and its second sealing ring of the sealing head body 1 are embedded in the opening of the cable protection pipe 6 and fixed by the friction between the second sealing ring and the inner wall of the cable protection pipe 6. The first sealing ring of the first housing of the sealing head body 1 is pressed against the opening end of the cable protection pipe 6 to achieve a sealing effect.

[0030] Multiple plugging head bodies are screwed together and stacked. The stud 41 of the lower plugging head body 1 is screwed into the screw sleeve 42 of the upper plugging head body 1, and the second shell 3 of the upper plugging head body 1 is embedded into the first shell 2 of the lower plugging head body 1, thus achieving stacking.

Claims

1. A cable protection pipe end head closure structure, characterised in that: The sealing head body (1) and the connecting column (4) are included. The sealing head body (1) is integrally formed by a first shell (2) with a cylindrical structure and a second shell (3) with a cylindrical structure. A first groove (21) with an annular structure is provided on the inner end face of the first shell (2), and a second groove (31) with an annular structure is provided on the second shell (3). A first sealing ring and a second sealing ring are respectively fixedly embedded in the first groove (21) and the second groove (31). The connecting post (4) is integrally formed by a stud (41) with an external thread structure and a sleeve (42) with an internal thread structure. The outer diameter of the stud (41) is matched with the inner diameter of the sleeve (42). The sleeve (42) is coaxial and fixedly positioned at the center of the bottom of the second housing (3). The threaded hole (43) at the bottom of the sleeve (42) penetrates the bottom of the sleeve (42).

2. A cable protection tube end closure structure according to claim 1, characterised in that: The top of the stud (41) extends 2-3 cm beyond the bottom of the first shell (2).

3. A cable protection tube end closure structure according to claim 1, characterised in that: The first shell (2) and the second shell (3) have the same wall thickness.

4. A cable protection tube end closure structure according to claim 1, characterised in that: The inner diameter of the first shell (2) is 1.2-1.3 times the outer diameter of the second shell (3).

5. The cable protection tube end head obturating structure of claim 1, wherein: The inlet end of the threaded hole (43) fits with the bottom of the second housing (3) to form a rounded corner structure.

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