CN203477650U - Double-layer PE gas pipe with termite-proof protection layer - Google Patents

Abstract

The utility model relates to the technical field of gas pipes, in particular to a double-layer PE gas pipe with an anti-termite protective layer. It includes a gas pipeline, the gas pipeline is composed of a conveying inner layer as a conveying pipe and an anti-corrosion outer layer that prevents termite corrosion, and the anti-corrosion outer layer can be peeled off from the inner conveying layer under the action of external force . The utility model has a certain adhesive force between the conveying inner layer and the anti-corrosion outer layer, which can ensure that the two layers can be tightly bonded without sliding or separating, and at the same time, the anti-corrosion of the required parts can be removed by external force during installation. The outer layer is peeled off without damaging the inner layer of the delivery pipe. Compared with the single-layer PE gas pipe, it has the advantages of termite resistance, scratch resistance, safe and convenient connection, etc., and can effectively improve the safety and reliability of gas pipeline installation and use.

Description

A double-layer PE gas pipe with an anti-termite protective layer

technical field

The utility model relates to the technical field of gas pipes, in particular to a double-layer PE gas pipe with an anti-termite protective layer.

Background technique

PE gas pipe has the advantages of long service life, strong chemical corrosion resistance, simple and reliable construction, good air tightness, good toughness, energy saving, and low overall cost of pipelines. It has been more and more used in gas transportation. In some areas, PE pipelines have been used as the first choice for urban gas pipelines.

However, while PE gas pipes are widely used, there are also some difficult problems that need to be solved. As we all know, gas pipelines have high requirements for safety performance. However, due to the low hardness of PE materials, they can be damaged or even bitten through by termites, resulting in gas leakage; on the other hand, due to the characteristics of PE pipeline materials The surface is easily scratched during the laying process, which also brings serious hidden dangers to the safe use of PE pipes. In addition, when PE pipes are connected by electrofusion, the surface of the pipes needs to be treated, which is relatively troublesome.

Utility model content

The technical problem to be solved by the utility model is to provide a double-layer PE gas pipe capable of preventing termites, scratch resistance, and safe and convenient connection in view of the deficiencies of the prior art.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is as follows:

A double-layer PE gas pipe with an anti-termite protective layer, including a gas pipe, the gas pipe is composed of a conveying inner layer and an anti-corrosion outer layer, and the anti-corrosion outer layer can be combined with the Convey inner layer phase peeling. The transport inner layer and the anti-corrosion outer layer can be closely bonded without sliding or separation, and at the same time, the anti-corrosion outer layer of the required part can be peeled off by external force during installation without damaging the inner transport layer.

In a further preferred solution, in the above-mentioned double-layer PE gas pipe with an anti-termite protective layer, the peel strength between the transport inner layer and the anti-corrosion outer layer is between 4.1-5 N/mm.

In a further preferred solution, in the above-mentioned double-layer PE gas pipe with an anti-termite protective layer, the peel strength between the conveying inner layer and the anti-corrosion outer layer is 4.5 N/mm.

In a further preferred solution, in the above-mentioned double-layer PE gas pipe with an anti-termite protective layer, the conveying inner layer is made of one or more materials of PE80, PE100, and PE100-RC.

In a further preferred solution, in the above-mentioned double-layer PE gas pipe with an anti-termite protective layer, the thickness of the anti-corrosion outer layer is between 4.5-5.5mm. Preferably, the thickness is 5 mm.

In a further preferred solution, in the above-mentioned double-layer PE gas pipe with an anti-termite protective layer, the anti-corrosion outer layer is a composite layer in which a modification additive is added to the matrix resin.

Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

The gas pipeline of the utility model has a double-layer PE gas pipe with an anti-termite protective layer. , scratch resistance, safe and convenient connection, etc., can effectively improve the safety and reliability of gas pipeline installation and use.

Description of drawings

Fig. 1 is a schematic cross-sectional view of a gas pipeline according to an embodiment of the present invention.

In the figure, the inner layer 1 is conveyed and the outer layer 2 is protected against corrosion.

Detailed ways

The embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present utility model, and cannot be construed as limitations to the present utility model. In order to better illustrate the embodiments, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is possible that some known structures and their descriptions in the drawings may be omitted understand.

In Fig. 1, the utility model discloses a double-layer PE gas pipe with an anti-termite protective layer, including a gas pipe, which is composed of a conveying inner layer 1 as a conveying pipe and an anti-corrosion outer layer 2 that prevents termite erosion. Layer structure, and the anti-corrosion outer layer 2 can be peeled off from the conveying inner layer 1 under the action of external force. Due to the certain adhesion between the conveying inner layer 1 and the anti-corrosion outer layer 2, it can ensure that the two layers can be tightly bonded without sliding or separating, and at the same time, the anti-corrosion layer of the required part can be moved by external force during installation. The outer layer 2 is peeled off without damaging the conveying pipe that conveys the inner layer 1 . Conveying The conveying inner layer 1 is made of one or more materials of PE80, PE100, PE100-RC. The anti-corrosion outer layer 2 is a composite layer in which a modification additive is added to the matrix resin.

Specifically, the peel strength between the conveying inner layer 1 and the anti-corrosion outer layer 2 is between 4.1-5 N/mm. For better results, usually the peel strength is 4.5N/mm. The thickness of the anti-corrosion outer layer 2 is between 4.5-5.5mm. For a better effect, the thickness is 5 mm.

In addition, the base resin in the anti-corrosion outer layer 2 is homopolypropylene (PP-H), random copolymerized polypropylene (PP-R), block copolymerized polypropylene (PP-B), polyvinyl chloride (PVC- One or more of U), chlorinated polyvinyl chloride (PVC-C), polyethylene, polybutene (PB), ABS. The modification aid contains one or more of nucleating agent, adhesion modifier, light stabilizer, PVC auxiliary agent, and color masterbatch. The modification additive accounts for 5-40% of the total weight of the anti-corrosion outer layer 2 material, and it includes the following components, calculated as a percentage of the total weight of the anti-corrosion outer layer 2 material:

Nucleating agent 0~10%, adhesion modifier 0~10%, light stabilizer 0~5%, PVC additive 0~40%, color masterbatch 0.5~5%.

To sum up, the gas pipeline of the present invention has the advantages of termite prevention, scratch resistance, safe and convenient connection, and the like. The utility model has strong practicability and wide application.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (5)

1. a double-deck PE fuel tube with termite-proof protective layer, comprises gas pipeline, it is characterized in that, by carrying, internal layer and corrosion protection are outer forms double layer construction to described gas pipeline, and described corrosion protection skin can be peeled off mutually with carrying internal layer under the effect of external force.

2. the double-deck PE fuel tube with termite-proof protective layer according to claim 1, is characterized in that, the peeling strength between described conveying internal layer and corrosion protection skin is between 4.1-5N/mm.

3. the double-deck PE fuel tube with termite-proof protective layer according to claim 2, is characterized in that, the peeling strength between described conveying internal layer and corrosion protection skin is 4.5N/mm.

4. the double-deck PE fuel tube with termite-proof protective layer according to claim 1, is characterized in that, the outer field thickness of described corrosion protection is between 4.5-5.5mm.

5. the double-deck PE fuel tube with termite-proof protective layer according to claim 4, is characterized in that, the outer field thickness of described corrosion protection is 5mm.