CN205534677U - Multilayer PE -RTPE -Xb composite pipe - Google Patents

Abstract

The utility model discloses a multilayer PE -RTPE -Xb composite pipe, including the composite pipe body who adopts the three -layer composite structure, composite pipe body includes the outer and PE -Xb layer of PE -RT, the PE -RT external sheath is in the PE -Xb layer outside, composite pipe body still includes a PE -RT inlayer, the cladding of PE -Xb layer is in the outside of PE -RT inlayer. The utility model relates to a rationally, simple structure, can be through the hot melt the method with pipeline and pipe fitting linking together firmly, the condition that can effectually avoid appearing leaking in the junction of pipeline and pipe fitting, sanitary performance is good.

Description

A kind of multilamellar PE-RT/PE-Xb compound pipeline complex pipeline

Technical field

This utility model relates to compound pipeline complex pipeline technical field, is related specifically to a kind of multilamellar PE-RT/PE-Xb multiple Close pipeline.

Background technology

The heat resistance (using as-70 DEG C～90 DEG C) that crosslinked polyethylene (PE-X) pipeline tool is excellent, relatively In long service life, can use safely more than 50 years, good recovery shape-memory properties；Anti-vibration, Impact resistance；Hydraulic characteristic(s) is excellent, is mainly used in the conveying of Indoor Thermal waterpipe, especially hot water.But It is due to the special structure of crosslinked polyethylene, it is impossible to as the pipeline of thermoplastic, carry out hot-melt adhesive paste, Its connected mode can only carry out mechanical connection, causes the reliability and security of its joint to be beaten greatly, detains, Situation about usually leaking in junction.And then during developer have developed as depicted in figs. 1 and 2 State's patent one can hot melt PE-X compound pipeline complex pipeline, Application No. 201420488005.9, use bilayer multiple Close structure, by can the PE-RT outer layer (2) of hot-melt adhesive paste and PE-X internal layer (1) constitute, PE-RT Although this compound pipeline complex pipeline is linked together firmly by the method that outer layer can use hot melt with pipe fitting, but by It is containing the composition such as organotin and silane in PE-X inner layer pipe, poor for delivery sanitation performance, Especially domestic water, brings bigger harm to user.

But for the deficiencies in the prior art, developer be necessary to develop a kind of reasonable in design, simple in construction, By the method for hot melt, pipeline can be linked together firmly with pipe fitting, it is possible to effectively avoid at pipe There is situation about leaking, the multilamellar PE-RT/PE-Xb multiple tube that sanitation performance is good in the junction of road and pipe fitting Road.

Utility model content

For solving the problem that prior art exists, this utility model provide a kind of reasonable in design, structure is simple Singly, by the method for hot melt, pipeline can be linked together firmly with pipe fitting, it is possible to effectively avoid Situation about leaking occur in the junction of pipeline Yu pipe fitting, multilamellar PE-RT/PE-Xb that sanitation performance is good is combined Pipeline.

For solving above technical problem, this utility model realizes by the following technical solutions:

A kind of multilamellar PE-RT/PE-Xb compound pipeline complex pipeline, including the composite pipe body of employing three-layer composite structure, institute Stating composite pipe body and include PE-RT outer layer and PE-Xb layer, described PE-RT external sheath is outside described PE-Xb layer Side；

It is characterized in that, described composite pipe body also includes that a PE-RT internal layer, described PE-Xb layer are coated on The outside of PE-RT internal layer.

In a preferred embodiment of the present utility model, in described PE-RT outer layer, PE-Xb layer and PE-RT The ratio of the thickness of layer is 5: 3: 2.

Compared with prior art, this utility model includes the composite pipe body using three-layer composite structure, and is somebody's turn to do Composite pipe body includes PE-RT internal layer, PE-Xb layer and PE-RT outer layer, and PE-Xb layer is coated on PE-RT internal layer Outside, and PE-RT external sheath is in the outside of PE-Xb layer, adopting the structure can be by the side of hot melt Pipeline is linked together firmly by method with pipe fitting, it is possible to effectively avoid the junction at pipeline Yu pipe fitting The situation that appearance is leaked, and also do not interfere with the health of domestic water, further increase this multilamellar The Practical Performance of PE-RT/PE-Xb compound pipeline complex pipeline.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, Accompanying drawing in describing below is only embodiments more of the present utility model, for ordinary skill people From the point of view of Yuan, on the premise of not paying creative work, it is also possible to obtain the attached of other according to these accompanying drawings Figure.

Fig. 1 is the radial cross-section of prior art.

Fig. 2 is the axial sectional view of prior art.

Fig. 3 is radial cross-section of the present utility model.

Fig. 4 is axial sectional view of the present utility model.

Detailed description of the invention

For the technological means making this utility model realize, creation characteristic, reach purpose and be prone to bright with effect White understanding, below in conjunction with being specifically illustrating, is expanded on further this utility model.

With reference to shown in Fig. 3 and Fig. 4, a kind of multilamellar PE-RT/PE-Xb compound pipeline complex pipeline be given in figure, including adopting With the composite pipe body of three-layer composite structure.

Composite pipe body includes PE-RT outer layer 100 and PE-Xb layer 200, and PE-RT outer layer 100 is coated on PE-Xb Outside layer 200, the setting of PE-RT outer layer 100 can by the method for hot melt by compound pipeline complex pipeline with pipe fitting firmly Link together, it is possible to effectively avoid the situation occurring leaking in the junction of pipeline Yu pipe fitting.

And PE-Xb layer 200 has good thermostability, and it is able to ensure that bigger at a higher temperature Intensity, further increases the intensity under the thermostability performance of this compound pipeline complex pipeline and high temperature.

Composite pipe body also includes a PE-RT internal layer 300, and PE-Xb layer 200 is coated on outside PE-RT internal layer 300 Side, the sanitation performance of PE-RT internal layer 300 is good, it is possible to avoid PE-Xb layer 200 when for delivery pair The pollution of hot water, especially domestic water, it is possible to effectively avoid the composition such as organotin and silane to edible The harm that person's person is caused.

PE-RT outer layer 100, the ratio of thickness of PE-Xb layer 200 and PE-RT internal layer 300 are 5: 3: 2, root According to the specifications and models of pipeline, each layer thickness is controlled in proper ratio, to guarantee not touch PE-Xb when hot melt Layer and PE-RT internal layer, to keep thermal welding performance and the sanitation performance of inside of compound pipeline complex pipeline.

This utility model includes the composite pipe body using three-layer composite structure, and this composite pipe body in sum Including PE-RT internal layer, PE-Xb layer and PE-RT outer layer, PE-Xb layer is coated on the outside of PE-RT internal layer, and PE-RT external sheath is in the outside of PE-Xb layer, and adopting the structure can be by the method for hot melt by pipeline Link together firmly with pipe fitting, it is possible to effectively avoid occurring leaking in the junction of pipeline with pipe fitting Situation, and also do not interfere with the health of domestic water, further increase this multilamellar PE-RT/PE-Xb The Practical Performance of compound pipeline complex pipeline.

Of the present utility model ultimate principle, principal character and of the present utility model excellent have more than been shown and described Point.Skilled person will appreciate that of the industry, this utility model is not restricted to the described embodiments, above-mentioned Principle of the present utility model is simply described, without departing from this utility model described in embodiment and description On the premise of spirit and scope, this utility model also has various changes and modifications, and these changes and improvements are all In the range of falling into claimed this utility model.This utility model claims scope by appended right Claim and equivalent thereof define.

Claims (2)

1. a multilamellar PE-RT/PE-Xb compound pipeline complex pipeline, including the composite pipe body of employing three-layer composite structure, Described composite pipe body includes PE-RT outer layer and PE-Xb layer, and described PE-RT external sheath is at described PE-Xb layer Outside；

It is characterized in that, described composite pipe body also includes that a PE-RT internal layer, described PE-Xb layer are coated on The outside of PE-RT internal layer.

A kind of multilamellar PE-RT/PE-Xb compound pipeline complex pipeline the most according to claim 1, it is characterised in that: The ratio of the thickness of described PE-RT outer layer, PE-Xb layer and PE-RT internal layer is 5: 3: 2.