Polyether ether ketone pipe joint and welding method thereof

A technology of polyetheretherketone pipe and welding method, which is applied in the field of pipe joints, can solve problems such as inability to achieve effective welding, and achieve the effects of good sealing performance, high efficiency, and simple operation

Active Publication Date: 2020-08-18
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the traditional structure of the polyetheretherketone pipe joint cannot realize effective welding, and a polyetheretherketone pipe joint is provided

Method used

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  • Polyether ether ketone pipe joint and welding method thereof
  • Polyether ether ketone pipe joint and welding method thereof
  • Polyether ether ketone pipe joint and welding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A polyether ether ketone pipe fitting, such as figure 1 As shown, it includes the joint body 1, the joint body 1 is hollow cylindrical, the two ends of the joint body 1 are provided with openings, the inner wall of the joint body 1 is provided with an annular groove 11 and a stopper 12, the annular groove 11 and the joint body 1 is set coaxially, the annular groove 11 is located between the limiter 12 and the end of the joint body 1, the limiter 12 is columnar, the limiter 12 is coaxially arranged with the joint body 1, the end of the joint body 1 and the limiter Between the pieces 12 is a welded part, and the number of annular grooves 11 is set according to actual needs. When there are multiple annular grooves 11, the plurality of annular grooves 11 are equidistantly distributed along the axial length direction of the welded part.

[0066] In order to facilitate the matching connection between the joint body 1 and the hydraulic balance distributor, one end of the joint...

Embodiment 2

[0071] The difference between this embodiment and Embodiment 1 is that the outer diameter of the joint body 1 is 25 mm, and the wall thickness of the joint body 1 is 1.5 mm, such as figure 2 As shown, the number of annular grooves 11 is 2, the width of the annular grooves 11 is 1mm, the depth of the annular grooves 11 is 0.5mm, and the two annular grooves 11 are equidistantly distributed on the welding length.

[0072] In this embodiment, the tolerance of the outer diameter of the welding end of the PEEK tube 2 is within ±0.12 mm, and the tolerance of the wall of the PEEK tube 2 is within ±0.12 mm. The inner diameter of the joint body 1 is 0.1-0.2mm smaller than the outer diameter of the PEEK tube 2, ensuring that the interference fit between the inner wall size of the PEEK tube joint and the outer diameter of the PEEK tube 2 is 0.1-0.2mm .

Embodiment 3

[0074] The difference between this embodiment and Embodiment 1 is that the outer diameter of the joint body 1 is 38 mm, and the wall thickness of the joint body 1 is 1.5 mm, such as image 3 As shown, the number of annular grooves 11 is at least 3, the width of the annular grooves 11 is 2mm, the depth of the annular grooves 11 is 0.5mm, and the annular grooves 11 are equidistantly distributed on the welding length.

[0075] In this embodiment, the tolerance of the outer diameter of the welding end of the PEEK tube 2 is within ±0.2 mm, and the tolerance of the wall of the PEEK tube 2 is within ±0.2 mm. The inner diameter of the joint body 1 is 0.2-0.3 mm smaller than the outer diameter of the PEEK tube 2 , ensuring that the interference fit between the inner wall size of the PEEK tube joint and the outer diameter of the PEEK tube is 0.2-0.3 mm.

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Abstract

The invention discloses a polyether ether ketone pipe joint, and relates to the technical field of pipe joints. The polyether ether ketone pipe joint comprises a joint body, two ends of the joint bodyare provided with openings, an annular groove and a limiting piece are arranged in the inner wall of the joint body, and the annular groove is positioned between the limiting piece and the end part of the joint body. The invention also provides a welding method of the polyether ether ketone pipe joint. The pipe joint and the welding method have the beneficial effects that the polyether ether ketone pipe joint can be matched with a polyether ether ketone pipe,the subsequent welding is conveniently, and the polyether ether ketone pipe joint is large in welding area, high in welding seam connection strength, good in sealing property, attractive in appearance, free of accumulation of overflow rubber materials, and capable of controlling the feeding depth of a straight polyether ether ketonepipe through the limiting piece in the welding process.

Description

technical field [0001] The invention relates to the technical field of pipe joints, in particular to a polyether ether ketone pipe joint and a welding method thereof. Background technique [0002] As a typical special engineering plastic, PEEK has high mechanical strength, excellent impact resistance, fatigue resistance and so on. Compared with traditional aluminum alloys, PEEK materials show strong application potential in terms of design freedom, manufacturing convenience, light weight and high strength. It is recognized as one of the engineering plastics with the best comprehensive performance in the world. PEEK formed pipes have been widely used in aviation, automobile, paint delivery and other fields. In order to realize the welding of plastic pipelines, there are currently many methods such as hot plate, ultrasonic, laser, etc. However, for PEEK pipelines with high internal pressure requirements, the traditional welding structure-end welding is difficult to meet high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L47/02B29C65/02B29C65/78
CPCF16L47/02B29C65/02B29C65/7841B29C66/5344
Inventor 陈奇海霍绍新方良超殷东平瞿启云姚芮李磊许春停
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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