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Technical method of connecting corrugated pipes using heat shrinking pipe

A process method and corrugated pipe technology, applied in the direction of pipes/pipe joints/fittings, passing components, mechanical equipment, etc., can solve the problems of high cost, uneven pressing force, power supply, etc., and achieve beautiful appearance and tightness Good, high connection strength effect

Inactive Publication Date: 2003-04-16
成都市双流川双热缩制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the former is that the pressing force is uneven, the sealing ring is easily damaged, causing leakage, and the cost is high; the latter is easy to dislocate during welding due to the thin wall of the bellows, the connection is not firm, and a power supply is required

Method used

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  • Technical method of connecting corrugated pipes using heat shrinking pipe
  • Technical method of connecting corrugated pipes using heat shrinking pipe
  • Technical method of connecting corrugated pipes using heat shrinking pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: To connect a single-wall corrugated pipe with an inner diameter of 110mm, the operation steps are as follows:

[0015] 1) Put the PE heat-shrinkable tube on one of the corrugated tubes to be connected, and polish the outer surfaces of the butt ends of the two corrugated tubes to be connected. The grinding length is 100mm from the butt end faces, and clean the polished surface.

[0016] 2) Align and fix the end faces of the two corrugated pipes to be connected, and keep them away from the ground.

[0017] 3) Preheat the polished surface so that its surface temperature reaches 50±10°C.

[0018] 4) Move the heat-shrinkable tube to the grinding surface of one end of the bellows, so that the butt joint of the bellows is located at 1 / 3 of the heat-shrinkable tube, remove the protective paper inside the heat-shrinkable tube, and support the other end of the bellows with a wedge-shaped support block, That is, at 2 / 3, keep the circumferential interval between the hea...

Embodiment 2

[0020] Embodiment 2: To connect a double-wall corrugated pipe with an inner diameter of 300mm, the operation steps are as follows:

[0021] 1) Put the PE heat-shrinkable tube on one of the corrugated tubes to be connected, and polish the outer surfaces of the butt ends of the two corrugated tubes to be connected. The length of grinding is 120mm from the butt end faces, and clean the polished surface.

[0022] 2) Align the end faces of the two corrugated pipes to be connected and fix them by hot-melt spot welding at 4 places, and keep them away from the ground.

[0023] 3) Preheat the polished surface so that its surface temperature reaches 50±10°C.

[0024] 4) Wrap the joint of the corrugated pipe with shrink tape, and heat the heat shrink tape at the same time to make it stick to it for more than one week.

[0025] 5) Move the heat-shrinkable tube to the grinding surface at one end of the bellows so that the butt joint of the bellows is located at 1 / 3 of the heat-shrinkable ...

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PUM

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Abstract

The procedures of the technique are as follows. The thermal shrinkage tube is pulled and covered on the abutting end of the corrugated pipe to be connected. The two abutting ends of the corrugated pipes to be connected are burnished, aligned and fixed as well as kept a distance from ground. The following steps are carried out: preheating the surfaces burnished, moving the thermal shrinkage tube to the burnished place of the corrugated pipe and using wedge shape back up block to support one end of the corrugated pipe. Baking procedure is carried out from one end of the thermal shrinkage tube around the circumferential direction evenly to the other end with the wedge shape back up block supported, meanwhile the pressure is applied to the shrank part.

Description

technical field [0001] The invention provides a process method for connecting bellows, in particular relates to a process method for connecting bellows with a heat-shrinkable tube. Background technique [0002] The connection method of bellows in the prior art generally adopts two methods, one is that the joint of the bellows is inserted into the sealing ring, and then pressed tightly with a socket or a clamp; Direct soldering. The disadvantage of the former is that the pressing force is uneven, the sealing ring is easily damaged, causing leakage, and the cost is high; the latter is easy to dislocate during welding due to the thin wall of the bellows, the connection is not firm, and a power supply is required. Contents of the invention [0003] The purpose of the present invention is to overcome the above disadvantages and provide a process method for connecting bellows with heat-shrinkable tubes that does not require a power source, has firm and reliable connections, goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L25/00
Inventor 张福康张玉根
Owner 成都市双流川双热缩制品有限公司