Pipeline system capable of resisting leakage, heat and corrosion and construction method of pipeline system

Abstract

The invention discloses a pipeline system capable of resisting leakage, heat and corrosion and a construction method of the pipeline system, and belongs to a composite pipeline system. A steel-plastic composite pipe comprises an inner layer, an intermediate layer and an outer layer; the inner layer is a polyethylene pipe manufactured by the radiation crosslinking process, the outer layer is a thin-wall steel pipe, and the inner and the outer layers are bonded together through hot melt glue; an outer pipe turnbuckle is arranged on the main body of a special pipe joint and matched with a lock nut to form matching parts. The outer surface of a sleeved pipe head extending from a main body turnbuckle is a cone-shaped seal platform, the composite pipe sleeves the seal platform after flaring, the lock nut sleeves the composite pipe, a thread on the inner surface of the lock nut enables the lock nut to be connected with the main body turnbuckle, and an inner cone tubular lock platform and an outer cone tubular lock platform which extend from the threaded end of the main body turnbuckle are tightly pressed to form tight coupling on the composite pipe. The pipeline system, which is formed by virtue of the combination of the modified steel-plastic composite pipe and a special pipe connection device, delivers the benefit of long-lasting resistance to heat and leakage, and is convenient in construction and rich in decorative beauty.

Description

technical field [0001] The invention belongs to a composite piping system, and relates to a steel-plastic composite pipe, a special connection device and a construction method for an anti-seepage, heat-resistant, and corrosion-resistant piping system composed of the same. Background technique [0002] At present, there are mainly five kinds of pipes used in residential building water supply and drainage pipes, heating pipes, natural gas pipes, building fire pipes, air-conditioning pipes, factory anti-corrosion and anti-leakage special pipes. The first type is galvanized iron pipe, which uses electroplating chemical method to coat a layer of zinc on the iron surface to achieve the purpose of rust prevention. , which is not conducive to clean water quality; in addition, pipes are generally formed by welding, and the welding residue in the pipe is likely to cause secondary pollution, and the anti-corrosion performance of the welded part is low, the construction process is compl...

AI Technical Summary

Problems solved by technology

The first type is galvanized iron pipe, which uses electroplating chemical method to coat a layer of zinc on the iron surface to achieve the purpose of rust prevention. , which is not conducive to clean water quality; in addition, pipes are generally formed by welding, and the welding residue in the pipe is likely to cause secondary pollution, and the anti-corrosion performance of the welded part is low, the construction process is complicated, and local maintenance is difficult

The second type is stainless steel pipe, which has high strength and excellent corrosion resistance, but the cost is relatively high, and the sealing material ring is unavoidable. Therefore, pipe leakage caused by material aging and thermal expansion and contraction has almost become a stubborn problem of this kind of pipe

The third type is ordinary aluminum-plastic composite pipe, which is a multi-layer structure pipe, the inner and outer layers are plastic layers, the middle is an aluminum alloy layer, and the metal layer and the plastic layer are bonded by hot-melt adhesive; the pipe High strength and bendable, but metal and plastic will delaminate after long-term use, which will reduce the strength of the pipe; especially when used as a hot water pipe, the delamination phenomenon is more serious, and the phenomenon of leakage at the connection part of the pipe fittings is more common

In addition, the unavoidable defect of this composite pipe is that there is no ideal pipe joint structure to solve the problem of firm connection and pipeline leakage of the piping system, especially when the composite pipe experiences temperature changes

The fourth type is PP-R plastic pipes, including PE-X. This kind of pipes use resin pellets to extrude pipes by thermal deformation. The pipes are connected by hot melt, which has poor anti-aging ability and short service life.

Although it has improved a series of problems such as improving temperature resistance, fire prevention and rust prevention, there is still a gap in the formation of high-grade pipes with long life, high sealing, high strength, easy maintenance and rich decorative beauty.

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