Composite PE (Poly Ethylene) gas pipe

Abstract

The invention discloses a composite PE gas pipe. The composite PE gas pipe comprises a pipe body. The pipe body is composed of a corrosion resistant layer, a base layer and a gas rubber layer from outside to inside. The corrosion resistant layer is made of matrix resin and a performance additive. The base layer comprises an outer PE layer, a metal mesh core layer and an inner PE layer. A plurality of metal wires extending to both ends of the pipe in the axial direction of the pipe are arranged between the outer PE layer and the metal mesh core layer and evenly distributed on the outer circumferential surface of the metal core layer. One end of every metal wire is connected to a detector alarm at the end of the pipe. The outer surface of the gas rubber layer is coated with a latex layer. The composite PE gas pipe is simple in structure, easy to manufacture, good in seal performance, high in safety performance, easy to inspect and maintain, capable of effectively avoiding damage from termites, rats and the like, not prone to deformation and aging, long in service life and especially suitable for transporting gas, such as natural gas, coal gas and liquefied petroleum gas.

Description

technical field [0001] The invention relates to a gas delivery pipe, in particular to a PE composite gas pipe. Background technique [0002] At present, natural gas, coal gas, liquefied petroleum gas and other gases have been widely used in residential life and industrial production. With the continuous advancement of new material technology, the new PE gas pipe has the advantages of low density, good fluidity, good air tightness, strong chemical corrosion resistance, simple and reliable construction, easy processing and installation, and has gradually replaced the traditional Metal gas transportation pipes are widely used in gas transportation. However, due to the limitations of PE gas pipe material and structure, PE gas pipe has some disadvantages: poor impact resistance, low compressive strength, easy to be affected by climate temperature, leakage cannot be found in time, difficult to detect leak point, vulnerable to termites, etc. Insect-eaten, intolerance to sunlight,...

AI Technical Summary

Problems solved by technology

However, due to the limitations of PE gas pipe materials and structures, PE gas pipes have some disadvantages: poor impact resistance, low compressive strength, easy to be affected by climate temperature, leakage cannot be found in time, difficult to detect leak points, and vulnerable to termites, etc. Insect-eaten, intolerant to sunlight, etc.

Although the invention is equipped with a metal mesh layer, an insect-proof layer and an alarm, which improves the pressure resistance of the pipe body, prevents pests from eating and improves safety precautions, but has the following deficiencies: First, the PE gas pipe is easily affected by the climate temperature and is not stable. It is resistant to sunlight, and the pipe is not equipped with protective layers such as heat insulation and heat preservation, so the pipe body is easily deformed and aged, which affects the service life; second, the pipe is only equipped with an alarm at the end, and it is convenient to detect related configurations when there is no leakage. It is not easy to check the leak point, and it is difficult to repair; in addition, the pipe is only equipped with a flame-retardant rubber inner layer, and there is no relevant sealing and anti-leakage measures, so the safety performance is not high

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