Method for realizing coaxial assembling of two pipelines

A coaxial and pipeline technology, which is applied in the field of coaxial assembly of two pipelines, can solve the problems of poor sealing performance and tensile strength, prevent pipe displacement and deformation, and achieve good sealing performance and tensile strength of the product Effect

Active Publication Date: 2016-12-21
CHENGDU SHANHAI HEAT SHRINKABLE PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the defects of poor sealing performance and tensile strength of the connected product caused by using the existing hot-melt injection molding process to connect steel conduits and PE pipes, the present invention provides a method for coaxial assembly of two pipes. It can re

Method used

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  • Method for realizing coaxial assembling of two pipelines
  • Method for realizing coaxial assembling of two pipelines
  • Method for realizing coaxial assembling of two pipelines

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Embodiment 1

[0050] Such as figure 1 and figure 2 As shown, the present invention provides a method for realizing the coaxial assembly of two pipes, which is characterized in that it includes coaxial positioning and interference fit assembly;

[0051] The coaxial positioning is accomplished with a positioning tool, which includes a positioning frame 1, a positioning sleeve 2, a sleeve 3 and a positioning mold 4, and one of the tubes (pipe I6) is installed after passing through the positioning sleeve 2 On the positioning frame 1, pass another tube (pipe II7) through the sleeve 3 and install it on the positioning mold 4. After the positioning sleeve 2 and the sleeve 3 are installed, the axes of the positioning sleeve 2 and the sleeve 3 are at the same on a straight line;

[0052] The specific steps of the interference fit assembly are as follows: After fixing the positioning tool after the coaxial positioning, squeeze the two pipes so that the two pipes face each other to complete the int...

Embodiment 2

[0077] This embodiment is basically the same as Embodiment 1, except that the positioning sleeve and the positioning frame are fixedly connected together, and the positioning sleeve can be directly integrally formed with the positioning frame, or the positioning sleeve can be directly welded on the positioning frame. The sleeve and the fixing frame are fixedly connected together, and the sleeve can be directly integrally formed with the fixing frame, or can be directly welded on the fixing frame. As for the number of positioning sleeves and positioning frames, it is determined according to the length of the pipe, as long as the pipe can be well supported to prevent the pipe from bending and deforming during extrusion.

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Abstract

The invention discloses a method for realizing coaxial assembling of two pipelines. The method comprises the following steps: coaxial positioning and interference fit assembling, wherein the coaxial positioning is completed by a positioning tool; the positioning tool comprises a positioning frame, a positioning sleeve, a bushing and a positioning die; one pipe is mounted on the positioning frame after penetrating through the positioning sleeve, and the other pipe is mounted on the positioning die after penetrating through the bushing; after the positioning sleeve and the bushing are mounted, the axis of the positioning sleeve and the axis of the bushing are located on the same straight line; the interference fit assembling comprises the specific steps: after the positioning tool for coaxial positioning is fixed, squeezing the two pipes to enable the two pipes to face to each other to complete the interference fit assembling. Under the action of the positioning sleeve and the bushing, the coaxial assembling method for the two pipelines is realized; by the positioning effect of the method, the two pipelines can be coaxially assembled without deviation, and the assembling quality meets the requirement; both the sealing property and the tensile strength of a steel guide pipe and a PE pipe which are assembled meet the use requirements on natural gas conveying.

Description

technical field [0001] The invention belongs to the field of pipeline connection, in particular to a method for realizing the coaxial assembly of two pipelines. Background technique [0002] When the natural gas is transported from the gas company to the user, the buried PE pipe is used for transportation between the user and the natural gas, and the steel conduit is used for transportation after leaving the ground. Therefore, PE pipes and steel conduits must be used at the same time for gas transportation. Due to the particularity of gas transportation, strict sealing is required to prevent gas leakage, so the requirements for the connection of transportation pipelines are very strict. As for the connection between the steel conduit and the PE pipe, the method currently used is the hot-melt injection molding process, so that the steel conduit and the PE pipe are connected together. This method is simple and suitable for mass production, but the hot-melt injection molding me...

Claims

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Application Information

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IPC IPC(8): B29C65/64B29C65/78
CPCB29C65/64B29C65/7805B29C66/5221B29C66/74283
Inventor 郑军黄谋刚邓文松
Owner CHENGDU SHANHAI HEAT SHRINKABLE PROD
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