CN216078826U

CN216078826U - Polyethylene electric smelting pipe cap structure

Info

Publication number: CN216078826U
Application number: CN202122723118.5U
Authority: CN
Inventors: 陈建强; 姜钢材; 赵立刚; 汪晓岗; 邵凤玮
Original assignee: Ningbo Yuhua Electric Appliance Co ltd
Current assignee: Ningbo Yuhua Industrial Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-03-18
Anticipated expiration: 2031-11-08

Abstract

The utility model discloses a polyethylene electric melting pipe cap structure, which relates to the technical field of pipeline end plugging and comprises a pipe cap main body, an electric heating wire and two binding posts, wherein the pipe cap main body comprises a side cap and an end cap, the side cap is tubular, the end cap is plugged at one end of the side cap, and the side cap and the end cap are integrally formed; the electric heating wire comprises a welding section and a return wire section, the welding section is spirally embedded along the inner wall of the side cap in a surrounding manner, the return wire section is spirally embedded along the inner wall of the side cap in a surrounding manner, and the return wire section is deeper than the welding section; one end of the welding section close to the end cap is connected with one end of the loop section close to the end cap; the two wiring terminals are embedded on the outer wall of the side cap, close to the opening end and positioned outside the electric heating wire; one end of the welding section, which is close to the opening end of the side cap, is connected with one binding post, and one end of the return line section, which is close to the opening end of the side cap, is connected with the other binding post. The utility model provides a polyethylene electric melting pipe cap structure which is compact in structure and low in cost.

Description

Polyethylene electric smelting pipe cap structure

Technical Field

The utility model relates to the technical field of pipeline tail end plugging, in particular to a polyethylene electric melting pipe cap structure.

Background

With the vigorous development of the gas industry, natural gas enters more and more cells, so that polyethylene pipelines are used in more and more places, the tail ends of the pipelines sometimes need to be plugged in the using process of the polyethylene pipelines, in the prior application, a polyethylene electric melting plugging structure is usually adopted, the appearance mode used for connecting the polyethylene electric melting plugging structure is an electric melting sleeve and a hot melting pipe cap, the size is increased, the structure is complicated, the cost is greatly improved, and therefore, the development of the electric melting plugging pipe cap with compact structure and reduced cost in the field becomes a major urgency in the industry.

SUMMERY OF THE UTILITY MODEL

The utility model provides a polyethylene electric melting pipe cap structure with compact structure and low cost, aiming at solving the problems of large volume, complex structure and high cost of the existing pipeline end plugging mode.

In order to achieve the purpose, the utility model adopts the following technical scheme: a polyethylene electric melting pipe cap structure comprises a pipe cap main body, an electric heating wire and two binding posts, wherein the pipe cap main body comprises a side cap and an end cap, the side cap is tubular, the end cap is plugged at one end of the side cap, and the side cap and the end cap are integrally formed; the electric heating wire comprises a welding section and a return wire section, the welding section is spirally embedded along the inner wall of the side cap in a surrounding manner, the return wire section is spirally embedded along the inner wall of the side cap in a surrounding manner, and the return wire section is deeper than the welding section; one end of the welding section close to the end cap is connected with one end of the loop section close to the end cap; the two wiring terminals are embedded on the outer wall of the side cap, close to the opening end and positioned outside the electric heating wire; one end of the welding section, which is close to the opening end of the side cap, is connected with one binding post, and one end of the return line section, which is close to the opening end of the side cap, is connected with the other binding post.

Preferably, an observation hole is formed in the outer wall of the side cap, and the observation hole corresponds to the position of the welding section of the electric heating wire on the inner side of the side cap.

Preferably, the two terminals are arranged side by side along the circumferential direction of the outer wall of the side cap.

Preferably, the pitch of the loop segment is greater than the pitch of the welding segment.

Preferably, the electric heating wire is a red copper wire with a high-temperature insulating layer.

Therefore, the utility model has the following beneficial effects: 1. meanwhile, the electric melting sleeve has the functions of an electric melting sleeve and a hot melting pipe cap, and is compact in structure and convenient to use; 2. all locate pipe cap main part opening one side with two terminals, through the butt fusion of pipe cap main part inner wall and outside pipe fitting, effectively prevented the possibility that inside gas from the terminal department leakage.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a sectional view taken in the direction of a-a in fig. 1.

1: a cap body; 101: a side cap; 102: an end cap; 2: an electric heating wire; 201: a welding section; 202: a loop segment; 3: a binding post; 4: and (6) observing holes.

Detailed Description

The utility model is further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 2, a polyethylene electrofusion tube cap structure comprises a tube cap body 1, a heating wire 2 and two terminals 3, wherein the tube cap body 1 comprises a side cap 101 and an end cap 102, the side cap 101 is tubular, the end cap 102 is plugged at one end of the side cap 101, and the side cap 101 and the end cap 102 are integrally formed; the heating wire 2 is a red copper wire with a high-temperature insulating layer, the heating wire 2 comprises a welding section 201 and a return section 202, the welding section 201 is spirally embedded and arranged along the inner wall of the side cap 101, the return section 202 is deeper than the welding section 201, and the pitch of the return section 202 is greater than that of the welding section 201; one end of the welding section 201 close to the end cap 102 is connected with one end of the loop section 202 close to the end cap 102; the two binding posts 3 are embedded on the outer wall of the side cap 101, close to the opening end and positioned outside the heating wire 2, and the two binding posts 3 are arranged side by side along the circumferential direction of the outer wall of the side cap 101; one end of the fusion-spliced section 201 near the open end of the side cap 101 is connected to one of the terminals 3, and one end of the return line section 202 near the open end of the side cap 101 is connected to the other terminal 3. An observation hole 4 is formed in the outer wall of the side cap 101, and the observation hole 4 corresponds to the welding section 201 of the electric heating wire 2 on the inner side of the side cap 101.

The cap body 1 of the present application is integrally formed by injection molding. When the electric heating wire 2 is distributed, a loop section 202 with a circle of deep large span is firstly distributed into the inner wall of the pipe cap main body 1 from outside to inside through a wire distributing machine and a floating wire distributing tool, and then a plurality of welding sections 201 with a plurality of circles of shallow small spans are distributed into the inner wall of the pipe cap main body from inside to outside, wherein the welding sections 201 are arranged according to the thread pitch and the number of circles required by welding technical parameters. And finally, connecting two ends of the electric heating wire 2 with the two binding posts 3 respectively through gaskets in a pressing contact manner in the small holes.

This application possesses the function of electric smelting sleeve and hot melt pipe cap simultaneously, and compact structure, convenient to use. And, all locate cap body 1 opening one side with two terminal 3, through the butt fusion of cap body 1 inner wall and outside pipe fitting, effectively prevented the possibility that inside gas from the terminal department leakage.

Claims

1. The utility model provides a polyethylene electric smelting pipe cap structure which characterized in that: the electric heating wire heating tube comprises a tube cap main body (1), an electric heating wire (2) and two binding posts (3), wherein the tube cap main body (1) comprises a side cap (101) and an end cap (102), the side cap (101) is tubular, the end cap (102) is plugged at one end of the side cap (101), and the side cap (101) and the end cap (102) are integrally formed; the electric heating wire (2) comprises a welding section (201) and a return section (202), the welding section (201) is spirally embedded along the inner wall of the side cap (101), the return section (202) is spirally embedded along the inner wall of the side cap (101), and the return section (202) is deeper than the welding section (201); one end of the welding section (201) close to the end cap (102) is connected with one end of the loop section (202) close to the end cap (102); the two binding posts (3) are embedded on the outer wall of the side cap (101), close to the opening end and positioned on the outer side of the electric heating wire (2); one end of the welding section (201) close to the opening end of the side cap (101) is connected with one binding post (3), and one end of the return line section (202) close to the opening end of the side cap (101) is connected with the other binding post (3).

2. A polyethylene electrofusion cap construction according to claim 1, characterised in that: an observation hole (4) is formed in the outer wall of the side cap (101), and the observation hole (4) corresponds to the position of a welding section (201) of the electric heating wire (2) on the inner side of the side cap (101).

3. A polyethylene electrofusion cap construction according to claim 1, characterised in that: the two binding posts (3) are arranged side by side along the circumferential direction of the outer wall of the side cap (101).

4. A polyethylene electrofusion cap construction according to claim 1, characterised in that: the thread pitch of the loop segment (202) is larger than that of the welding segment (201).

5. A polyethylene electrofusion cap construction according to claim 1, characterised in that: the electric heating wire (2) is a red copper wire with a high-temperature insulating layer.