Composite connection construction technology for steel reinforced spirally wound polyethylene drainage pipe

A composite connection and construction technology technology, which is applied in the field of composite connection construction of plastic-steel winding drainage pipes, can solve the problems of lack of process research, difference in pipeline connection quality, imperfect process control, etc., and achieves good economic performance, simple construction, and effect. good effect

Inactive Publication Date: 2017-09-01
SINOHYDRO BUREAU 7 CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process control of the hot melt extrusion welding composite heat shrinkable sleeve technology is not perfect at present, and the research on the process is lacking, so it is impossible to form a joint force of

Method used

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  • Composite connection construction technology for steel reinforced spirally wound polyethylene drainage pipe
  • Composite connection construction technology for steel reinforced spirally wound polyethylene drainage pipe

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Embodiment Construction

[0034] The present invention is specifically described below through the examples, the examples are only used to further illustrate the present invention, and cannot be interpreted as limiting the protection scope of the present invention, some non-essential claims made by those skilled in the art based on the above-mentioned content of the present invention Improvements and adjustments also belong to the protection scope of the present invention.

[0035] In conjunction with the accompanying drawings.

[0036] The construction technology of polyethylene plastic steel winding drainage pipe composite connection adopts the connection technology of hot melt extrusion welding composite heat shrinkable sleeve, including welding interface treatment and welding parameter control;

[0037] Welding interface treatment, before welding, polish the connection end of the drain pipe and clean the surface; before connecting the heat shrinkable sleeve, clean the surface of the drain pipe and ...

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Abstract

The invention discloses a hot melting extrusion welding composite heat shrinking sleeve connecting technology. The hot melting extrusion welding composite heat shrinking sleeve connecting technology is adopted and includes the steps that a welding interface is treated, the connecting end of the draining pipe is polished to be flat before welding, and a surface is cleaned; before heat shrinking sleeve connection, the draining pipe and the surface of a heat shrinking sleeve material are cleaned; welding parameters are controlled, during hot melting extrusion welding connection, the walking speed of a weld gun is 3 cm/s and the welding width of a pipe joint is about 4+/-0.5 mm; and during heat shrinking sleeve connection, the flame walking height is 15+/-2 cm, the flame walking speed ranges from 10 cm/s to 12.5 cm/s, and the temperature is controlled to ranges from 110 DEG C to 120 DEG C. By means of the hot melting extrusion welding composite heat shrinking sleeve connecting technology, hot melting extrusion welding connection is firstly conducted, and then a heat shrinking belt is adopted for connection; and a polyethylene pipeline connector connected by adopting the technology has high tensile strength which can reach 16.56 MPa, water permeability resistance is good, the water pressure of 0.4 MPa can be borne, acid, alkali and salt corrosion resistance is achieved, the strength is not obviously reduced after 28 d corrosion immersion, and ductility is good during damage.

Description

technical field [0001] The invention belongs to the connection construction technology of municipal drainage pipes, in particular to the composite connection construction technology of plastic-steel winding drainage pipes. Background technique [0002] The polyethylene plastic-steel winding drainage pipe is a high-tech composite pipe product with independent intellectual property rights, world-leading level, green environmental protection, energy saving and consumption reduction. This product is mainly used as a buried drainage pipe. It integrates the rigidity of steel belt and the corrosion resistance of polyethylene, low frictional resistance, light weight, and convenient connection. It has been widely used in municipal engineering, sewage treatment plants and other key projects. middle. [0003] At present, in relevant industry and association standards, such as "polyethylene plastic steel winding drainage pipe" (CJ / T270-2007), "polyethylene plastic steel winding drainag...

Claims

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Application Information

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IPC IPC(8): B29C65/42B29C65/68
CPCB29C65/42B29C65/68
Inventor 冷洪明倪坤林吕江波温雷雷岳劲松宿有云刘玉坤殷本林王再强彭蓉丽
Owner SINOHYDRO BUREAU 7 CO LTD
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