CN211853051U

CN211853051U - Outer 3PE internal hot-melting epoxy resin steel pipe

Info

Publication number: CN211853051U
Application number: CN202020300814.8U
Authority: CN
Inventors: 陈余
Original assignee: Chongqing Jinruo Pipeline Manufacturing Co ltd
Current assignee: Chongqing Jinruo Pipeline Manufacturing Co ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-11-03
Anticipated expiration: 2030-03-12

Abstract

The utility model relates to an outer 3PE internal hot-melting epoxy resin steel pipe, which comprises an inner steel pipe and an outer steel pipe, wherein the outer steel pipe is sleeved at the outer end of the inner steel pipe, and the steel pipe also comprises an epoxy resin layer and an anticorrosive coating, the epoxy resin layer is coated on the inner surface of the inner steel pipe, and the anticorrosive coating is coated on the outer surface of the outer steel pipe; the epoxy resin layer that sets up through the internal surface of steel pipe makes interior steel pipe temperature resistance good, can use for a long time, has chemical corrosion resistance for the steel pipe can be used at various adverse circumstances, can make outer steel pipe and interior steel pipe have good chemical corrosion resistance and wearability through epoxy powder, adhesive and the synthetic 3PE anticorrosive coating of polyethylene simultaneously, and it is effectual to anticorrosive, can improve pipeline life.

Description

Outer 3PE internal hot-melting epoxy resin steel pipe

Technical Field

The utility model relates to a steel pipe equipment technical field specifically is an outer 3PE internal hot melt epoxy steel pipe.

Background

In recent years, with the rapid development of national economy in China, more and more large steel pipes are applied to mines, ports and docks, ocean engineering and municipal engineering. In order to effectively control the corrosion of the large steel pipe, prolong the service life of the large steel pipe and ensure the safe operation of infrastructure, the steel pipe needs to be subjected to surface anti-corrosion treatment. The most commonly used anticorrosion treatment method is to spray an anticorrosion paint on the surface of the steel pipe; the 3PE steel pipe comprises a seamless steel pipe, a spiral steel pipe and a straight seam steel pipe; an anticorrosive coating of the 3PE anticorrosive steel pipe is vital to the service life of the buried pipeline, and pipelines made of the same material are not corroded after being buried underground for decades, and are leaked after being buried underground for years; because they employ different outer corrosion protection layers;

the problem of the durability of the steel pipe is a very important and urgent problem to be solved, and is widely concerned by various fields, particularly in coastal areas or other areas in severe environments, the durability of the steel pipe is particularly outstanding due to the fact that the steel pipe is corroded by various substances; the serious corrosion problem of the steel pipe needs to be solved urgently;

in summary, the present application provides an outer 3PE inner hot-melt epoxy resin steel pipe to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an outer 3PE internal hot melt epoxy steel pipe to solve the problem that proposes in the above-mentioned background art, the utility model discloses convenient to use, easy operation, systematic height, the practicality is strong.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an interior hot melt epoxy steel pipe in outer PE, includes interior steel pipe and outer steel pipe, the outer end of steel pipe in the outer steel pipe box is located, still includes epoxy layer and anticorrosive coating, epoxy layer coats in the internal surface of steel pipe, the anticorrosive coating coats in the surface of outer steel pipe.

Preferably, the anticorrosive coating includes first coating, second coating and third coating, first coating coats in the outer end surface of outer steel pipe, the second coating coats in the surface of first coating, the third coating coats in the surface of second coating, first coating is epoxy powder layer, the second coating is the adhesive layer, the third coating is the polyethylene layer.

Preferably, still include connecting piece and insulating layer, interior steel pipe passes through the connecting piece fixed welding in outer steel pipe, just the connecting piece is equipped with four, and four even fixed connection of connecting piece are in the outer end of interior steel pipe, and adjacent it has the insulating layer to fill between the connecting piece.

Preferably, the connecting piece is of a T-shaped structure.

Preferably, the heat insulation layer is made of asbestos or glass wool.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the utility model discloses a setting up the mutually supporting of interior epoxy layer, epoxy powder layer, polyethylene layer, steel pipe and outer steel pipe, the epoxy layer that sets up through the internal surface at inner steel pipe makes interior steel pipe temperature resistance good, can use for a long time, has chemical resistance, makes the steel pipe can use in various adverse circumstances, can make outer steel pipe and interior steel pipe have good chemical corrosion resistance and wearability through the 3PE anticorrosive coating of epoxy powder, adhesive and polyethylene synthesis simultaneously, and anticorrosion effect is good, can improve pipeline life; 2. the utility model discloses a set up mutually supporting of connecting piece and insulating layer, can effectually prevent when the conflagration breaing out or other special cases completely cut off external high temperature and interior steel pipe through the insulating layer and prevent that it from influencing the material of carrying.

Drawings

FIG. 1 is a schematic view of the inner and outer steel pipes of the present invention;

FIG. 2 is an enlarged schematic view of the area A of FIG. 1 according to the present invention;

fig. 3 is a schematic side view of the outer steel pipe of the present invention.

Reference numerals: 1. an inner steel tube; 2. an outer steel tube; 3. an epoxy resin layer; 4. an anticorrosive layer; 41. a first coating layer; 42. a second coating layer; 43. a third coating layer; 5. a connecting member; 6. an insulating layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an outer 3PE internal hot-melting epoxy resin steel pipe comprises an inner steel pipe 1 and an outer steel pipe 2, wherein the outer steel pipe 2 is sleeved at the outer end of the inner steel pipe 1, the outer steel pipe also comprises an epoxy resin layer 3 and an anticorrosive layer 4, the epoxy resin layer 3 is coated on the inner surface of the inner steel pipe 1, the anticorrosive layer 4 is coated on the outer surface of the outer steel pipe 2, the epoxy resin layer 3 arranged on the inner surface of the inner steel pipe 1 enables the inner steel pipe 1 to have good temperature resistance and to be used for a long time, and meanwhile, the outer 3PE internal hot-melting epoxy resin steel pipe has chemical corrosion resistance, fire extinguishing agent corrosion resistance, high temperature resistance, wood crib fire resistance, corrosion resistance or flame resistance in water and water-free states, and excellent chemical corrosion resistance, so that the steel;

the anticorrosive coating 4 comprises a first coating 41, a second coating 42 and a third coating 43, the first coating 41 is coated on the outer end surface of the outer steel pipe 2, the second coating 42 is coated on the outer surface of the first coating 41, the third coating 43 is coated on the outer surface of the second coating 42, the first coating 41 is an epoxy powder layer, the second coating 42 is an adhesive layer, the third coating 43 is a polyethylene layer, and the 3PE anticorrosive coating synthesized by epoxy powder, the adhesive and the polyethylene can ensure that the outer steel pipe 2 and the inner steel pipe 1 have excellent chemical anticorrosive performance and wear resistance, has good anticorrosive effect and can prolong the service life of the pipeline;

the heat insulation device is characterized by further comprising four connecting pieces 5 and heat insulation layers 6, the inner steel pipe 1 is fixedly welded in the outer steel pipe 2 through the connecting pieces 5, the four connecting pieces 5 are uniformly and fixedly connected to the outer end of the inner steel pipe 1, the heat insulation layers 6 are filled between the adjacent connecting pieces 5, and the heat insulation layers 6 can effectively prevent the external high-temperature from being isolated from the inner steel pipe 1 to influence the conveyed substances when a fire disaster occurs or other special conditions occur;

the connecting piece 5 is of a T-shaped structure, so that the connection between the inner steel pipe 1 and the outer steel pipe 2 is more stable;

the heat insulation layer 6 is made of asbestos or glass wool;

the working principle is as follows: the epoxy resin layer 3 arranged on the inner surface of the inner steel pipe 1 enables the inner steel pipe 1 to have good temperature resistance, can be used for a long time, has chemical corrosion resistance, fire extinguishing agent corrosion resistance, high temperature resistance, wood crib fire resistance, corrosion resistance or flame resistance in a water-containing or water-free state, and excellent chemical corrosion resistance, and enables the steel pipe to be used in various severe environments; the 3PE anticorrosive layer synthesized by the epoxy powder, the adhesive and the polyethylene can ensure that the outer steel pipe 2 and the inner steel pipe 1 have excellent chemical anticorrosive performance and wear resistance, the anticorrosive effect is good, and the service life of the pipeline can be prolonged; through insulating layer 6 can effectually prevent when taking place a fire or other special circumstances to isolate external high temperature with interior steel pipe 1 and prevent that it from producing the influence to the material of carrying.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an outer 3PE internal hot melt epoxy steel pipe, includes interior steel pipe (1) and outer steel pipe (2), the outer end of interior steel pipe (1) is located to outer steel pipe (2) cover, its characterized in that: still include epoxy layer (3) and anticorrosive coating (4), epoxy layer (3) coat in the internal surface of interior steel pipe (1), anticorrosive coating (4) coat in the surface of outer steel pipe (2).

2. The external 3PE internally hot-melt epoxy steel pipe of claim 1, wherein: anticorrosive coating (4) include first coating (41), second coating (42) and third coating (43), first coating (41) coat in the outer end surface of outer steel pipe (2), second coating (42) coat in the surface of first coating (41), third coating (43) coat in the surface of second coating (42), first coating (41) are the epoxy powder layer, second coating (42) are the adhesive layer, third coating (43) are the polyethylene layer.

3. The external 3PE internally hot-melt epoxy steel pipe of claim 1, wherein: still include connecting piece (5) and insulating layer (6), interior steel pipe (1) is fixed to be welded in outer steel pipe (2) through connecting piece (5), just connecting piece (5) are equipped with four, and four even fixed connection in the outer end of interior steel pipe (1) of connecting piece (5), and adjacent it has insulating layer (6) to fill between connecting piece (5).

4. The outer 3PE internally hot-melt epoxy steel tube as claimed in claim 3, wherein: the connecting piece (5) is of a T-shaped structure.

5. The outer 3PE internally hot-melt epoxy steel tube as claimed in claim 3, wherein: the heat insulation layer (6) is made of asbestos or glass wool.