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Electric melting pipe fitting capable of being used for butt welding of double-wall corrugated pipe and manufacturing process thereof

A technology of electrofusion pipe fittings and manufacturing process, which is applied in the direction of pipes/pipe joints/pipe fittings, applications, tubular objects, etc., which can solve the problem that the sealing performance cannot be maintained for a long time, and achieve improved production efficiency and strong adaptability to thermal expansion and contraction Effect

Pending Publication Date: 2021-07-27
JIANGSU JIANGTE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an electrofusion pipe fitting for butt-welding double-wall corrugated pipes and its manufacturing process to solve the technical problem that polyethylene double-wall corrugated pipes can only be socketed and connected with rubber rings and the sealing performance cannot be maintained for a long time

Method used

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  • Electric melting pipe fitting capable of being used for butt welding of double-wall corrugated pipe and manufacturing process thereof
  • Electric melting pipe fitting capable of being used for butt welding of double-wall corrugated pipe and manufacturing process thereof
  • Electric melting pipe fitting capable of being used for butt welding of double-wall corrugated pipe and manufacturing process thereof

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Experimental program
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Embodiment 1

[0035] Such as Figure 1~3 as shown, figure 1 It is a working schematic diagram of an electrofusion pipe fitting for butt-welding double-wall corrugated pipes of the present invention; figure 2 It is a structural schematic diagram of an electric fusion pipe fitting for butt-welding double-wall bellows of the present invention; image 3 It is a left view of the structure of an electric fusion pipe fitting for butt-welding double-wall corrugated pipe of the present invention; an electric-fusion pipe fitting for butt-welding double-wall corrugated pipe 3 mainly includes a first butt joint 1 and a second butt joint 2 Two parts, the first docking part 1 and the second docking part 2 are integrally structured, the first docking part 1 is a hollow cylinder, the second docking part 2 is a hollow cylinder, and the first docking part 1 is far away from the second docking part One side of 2 is a butt welding end, and the butt welding end and the butt welding end of another pipe are fi...

Embodiment 2

[0042] Such as Figure 1~3 As shown, the second embodiment is carried out on the basis of the first embodiment, therefore, the content described in the first embodiment will not be repeated here.

[0043] Design of heating copper wire, winding parameters, and resistance parameters of electrofusion pipe fittings: determine the depth of the melting zone according to the inner wall thickness of the double-wall corrugated pipe, and determine the overall calorific value based on the volume and specific heat capacity of the molten plastic at the welding interface between the pipe fitting and the corrugated pipe. The preferred conventional input voltage is 39.5±0.5 volts, and the heating time and heating resistance value are designed according to the formula of Joule's law. The size of the resistance value is directly related to the characteristics of the copper wire (such as material, wire diameter, meter resistance).

[0044] The manufacturing process of the above electrofusion pi...

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Abstract

The invention relates to an electric melting pipe fitting capable of being used for butt welding of a double-wall corrugated pipe. The electric melting pipe fitting comprises a first butt joint part and a second butt joint part, the outer diameter of the first butt joint part is larger than that of the second butt joint part, the inner diameter of the first butt joint part is divided into a first inner diameter and a second inner diameter, the first inner diameter is larger than the second inner diameter, the second inner diameter is equal to the inner diameter of the second butt joint part, two energizing electrodes are symmetrically arranged on the outer side wall of the first butt joint part, and the heads of the energizing electrodes face outwards. The double-wall corrugated pipe in hot melting butt joint is free of flaring, continuous and consistent production can be achieved, and the production efficiency is improved by more than 50%; and the sealing performance of the double-wall corrugated pipe reaches zero leakage, the adaptability to thermal expansion and cold contraction caused by environment temperature changes is higher, the problem that a socket rubber ring falls off and leaks is avoided, zero pollution to underground water is achieved, the double-wall corrugated pipe can be vigorously popularized in the fields of municipal pollution discharge, fresh air conveying, electric power telecommunication sleeves and the like, and a solid-wall drainage pipe with higher cost is replaced.

Description

technical field [0001] The invention relates to an electric fusion pipe fitting, in particular to an electric fusion pipe fitting for butt-welding double-wall bellows and its manufacturing process. Background technique [0002] Electrofusion pipe fittings are widely used in the pipeline industry due to their excellent welding quality and the elimination of human uncertain factors. Conventional electrofusion pipe fittings are integrated by welding the inner surface and the outer surface of the pipe. This kind of pipe is suitable for pipes whose outer diameter is the nominal size. It has been used in PE water supply pipes and gas pipes, PP hot and cold water pipes or chemical pipelines. widely used. However, the nominal size of the pipe is generally specified by the inner diameter of the polyethylene double-wall corrugated pipe. The connection of the pipe generally adopts a flared socket connection with a rubber ring. The sealing performance of this connection cannot be guara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D23/00F16L47/02
CPCB29D23/001F16L47/02
Inventor 何本才谭冬华谭冬春薛志锋余建虹王霞华培玉谭嘉铭
Owner JIANGSU JIANGTE TECH