Piping joint for connecting plastic-lining metal pipeline with thin wall and production thereof

A technology for metal pipes and plastic pipe fittings, which is applied in the direction of pipe connection layout, pipes/pipe joints/fittings, pipe components, etc., and can solve the problems of easy aging, complex structure of pipe fittings, aging, etc.

Inactive Publication Date: 2006-05-31
浙江芽芽特种管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pipe fittings used in the two current connection methods have shortcomings: the structure of the pipe fittings used in the locking connection method is relatively complicated, so the production cost of the pipe fittings is relatively high; and the pipe fittings directly welded to the plastic lining of the pipeline, Due to the poor strength of the plastic pipe fittings, and easy aging (the plastic of the pipe fittings is exposed outside, it is easy to be aged by ultraviolet radiation), so the connection of the pipe fittings becomes the weak part of the thin-walled metal piping system.

Method used

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  • Piping joint for connecting plastic-lining metal pipeline with thin wall and production thereof
  • Piping joint for connecting plastic-lining metal pipeline with thin wall and production thereof
  • Piping joint for connecting plastic-lining metal pipeline with thin wall and production thereof

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Embodiment Construction

[0013] Below, the present invention is described in further detail in conjunction with accompanying drawing and specific embodiment:

[0014] Fig. 1, Fig. 2, Fig. 3 respectively represent one of the two petals of the metal shells that make up the pipe fittings tee, straight through, and elbows, and the metal shells can be made by stamping and stretching.

[0015] Fig. 4, Fig. 5, Fig. 6 represent: pipe fittings tee, straight through, elbow, all are made up of two metal shells and plastic pipe fittings wrapped in the metal shells. When making, put the plastic pipe fittings into the metal shell first, and then press the two metal shells tightly so that the joint surfaces of the two metal shells fit together. When bonding the joint surfaces, methods such as butt welding, superglue bonding, and riveting can be used to prevent the joint surfaces from being separated after touching and bonding. The two-petal metal shell is connected into one body through the bonding of the two conta...

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Abstract

The invention relates to a pipe fitting for connecting metal pipes lined plastic thin wall. The pipe fitting is a kind of metal-plastic multiple-unit pipe fittings. Ití»s production method is that the plastic pipe fitting is wrapped with two clacks of machined metal casings. Two clacks of metal casings are connected into an integral one by butt welding, strong glue jointing or riveting.

Description

Technical field [0001] The invention relates to a pipe fitting used for connecting plastic-lined thin-walled metal pipes. technical background [0002] When installing plastic-lined thin-walled metal pipes, the traditional process of pipe wall threading cannot be used for connection. Therefore, the connection between the pipe fittings and the pipes of this system adopts a non-threaded connection method: one is to use a special pipe fitting to lock the pipe to connect; the other is to insert the pipe fitting at the end of the pipe according to the pipe. The length of the metal pipe is peeled off to expose a section of inner plastic pipe, and the plastic pipe is used for hot-melt welding with plastic pipe fittings. However, the pipe fittings used in the two current connection methods have shortcomings: the structure of the pipe fittings used in the locking connection method is relatively complicated, so the production cost of the pipe fittings is rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L47/00F16L9/147F16L41/00F16L43/00
Inventor 万平华沈宇轩沈舞源
Owner 浙江芽芽特种管业有限公司
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