CN213452320U

CN213452320U - Stainless steel plastic conversion pipe fitting

Info

Publication number: CN213452320U
Application number: CN202022399454.4U
Authority: CN
Inventors: 王新宇
Original assignee: Zhuoyi Xinyan Machinery Chongqing Co ltd
Current assignee: Zhuoyi Xinyan Machinery Chongqing Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-06-15
Anticipated expiration: 2030-10-26

Abstract

The utility model provides a stainless steel-plastic conversion pipe fitting, which comprises a stainless steel pipe, a PE pipe fitting and a lock hoop; the stainless steel pipe is connected with the PE pipe fitting; a lock hoop is arranged at the joint of the stainless steel pipe and the PE pipe fitting; the lock hoop is provided with an outer lock hoop and an inner lock hoop; the inner wall of the stainless steel pipe is provided with an annular groove which is in occlusion connection with the PE pipe fitting; the inner wall of the outer lock hoop is provided with an annular groove which is occluded with the outer wall of the joint of the PE pipe fitting and the stainless steel pipe; and the outer wall of the inner lock hoop is provided with an annular groove which is meshed with the inner wall of the joint of the PE pipe fitting and the stainless steel pipe. The utility model discloses a stainless steel material intensity be high, toughness is good, and is corrosion-resistant, does not need anticorrosive treatment just can satisfy anticorrosive each item quality performance requirement when being used for making steel to mould conversion pipe fitting, easy operation convenience.

Description

Stainless steel plastic conversion pipe fitting

Technical Field

The utility model belongs to natural gas pipe network or other fluid transport pipe network fields. Relates to an anticorrosion technology for a connecting pipe fitting of a buried PE pipe and a ground steel pipe, in particular to a stainless steel-plastic conversion pipe fitting.

Background

The pipe produced by the PE material is widely applied to a natural gas pipe network or other fluid conveying pipe networks, but the PE material is aged due to ultraviolet irradiation in sunlight, the PE pipe cannot be directly led out of the ground for application, the ground part needs to be made of steel pipes, the PE pipe and the steel pipe can be connected and combined into the steel-plastic conversion pipe fitting, the connection part of the steel and the plastic is in a buried state, and therefore the steel pipe end needs to have anti-corrosion characteristics so as to ensure safe and reliable use. At present, steel-plastic conversion generally adopts common carbon steel materials, strict corrosion prevention treatment must be carried out on steel pipes, the process is complicated, and the cost is high.

1) In terms of cost: the existing anticorrosion treatment process needs to invest labor, materials, management and equipment and increase the area of a factory building, so that the cost of a product is directly increased, materials need to be repaired or replaced when anticorrosion is damaged in application, the cost is increased, the application efficiency is reduced, and the cost and a gas operation system are correspondingly increased;

2) in terms of safety: the original steel-plastic conversion pipe fitting is made of common carbon steel, and in the production and processing process, the steel pipe end to the outside of a connecting part with the PE end must be treated by an anticorrosive material; the anticorrosive materials are all non-metals, the strength of the anticorrosive materials cannot be compared with that of metals, the anticorrosive materials are easy to damage, once the anticorrosive layer is damaged in the application process, the anticorrosive performance of the anticorrosive layer is lost, the anticorrosive layer needs to be repaired or replaced, otherwise, potential safety hazards are generated;

3) in the aspect of environmental protection: in the process of the anticorrosion treatment process, environmental protection problems related to materials are also required to be considered, and because the paint, the spraying powder, other volatile matters and residual anticorrosion materials are required to be treated in the process of the anticorrosion treatment process, harmful substances are generated in the process, a corresponding environmental protection treatment method is required, and the operation is complicated.

Disclosure of Invention

To the weak point among the prior art, the utility model provides a conversion pipe fitting is moulded to stainless steel. The utility model has the characteristics of intensity is high, toughness is good, corrosion-resistant.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

a stainless steel-plastic conversion pipe fitting comprises a stainless steel pipe, a PE pipe fitting and a lock hoop; the stainless steel pipe is connected with the PE pipe fitting; a lock hoop is arranged at the joint of the stainless steel pipe and the PE pipe fitting; the lock hoop is provided with an outer lock hoop and an inner lock hoop; the inner wall of the stainless steel pipe is provided with an annular groove which is in occlusion connection with the PE pipe fitting, so that the connection strength is increased, and the sealing performance is improved; the inner wall of the outer lock hoop is provided with an annular groove which is occluded with the outer wall of the joint of the PE pipe fitting and the stainless steel pipe; the outer wall of the inner lock hoop is provided with an annular groove which is occluded with the inner wall of the joint of the PE pipe fitting and the stainless steel pipe; the PE pipe fitting can be prevented from creeping and is convenient to position.

Further, the inner lock hoop, the PE pipe fitting and the stainless steel pipe form an inner lock structure; the outer lock hoop, the PE pipe fitting and the stainless steel pipe form an outer lock structure.

Further, the stainless steel pipe is in a straight pipe type or a bent pipe type.

Furthermore, the outer side end of the PE pipe fitting connected with the lock hoop is externally connected with a pipe network; the locking hoop is connected with the PE pipe fitting and the stainless steel pipe and is arranged below the ground; and the outer side end of the stainless steel pipe is connected with the outer wall steel pipe.

Has the advantages that: the stainless steel-plastic conversion pipe fitting provided by the utility model can meet various quality performance requirements of corrosion resistance without corrosion resistance treatment, and the steel pipes are made of different types of 304, 304L, 316 and 316L; compared with the prior steel-plastic product made of common carbon steel, the product has great advantages; in terms of cost: the utility model does not need to be treated by an independent anticorrosion process, thereby reducing the cost; in terms of safety: because the steel-plastic conversion pipe fitting is used in a buried state, the utility model has superior anti-corrosion performance and anti-riot performance, can avoid the problem of pipe fitting damage and ensure the application safety; because the utility model discloses a stainless steel is moulded and is changed pipe fitting and need not the processing of anticorrosive technology, consequently does not relate to the independent processing of environmental protection problem in operation process, saves operating time, improves work efficiency.

Drawings

FIG. 1 is a schematic cross-sectional view of the inner lock ring structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the external lock collar of the present invention;

FIG. 3 is a schematic diagram of the straight tube stainless steel wall transition structure of the present invention;

fig. 4 is a schematic diagram of the conversion structure of the stainless steel wall of the elbow pipe of the present invention.

In the figure, 1-PE pipe fittings, 2-outer locking hoops, 3-stainless steel pipes, 4-outer wall steel pipes, 5-ground, 6-pipe networks and 7-inner locking hoops.

Detailed Description

The present invention is described below with reference to specific examples. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention in any way.

A stainless steel-plastic conversion pipe fitting, as shown in fig. 1 to 4, comprising a stainless steel pipe 3, a PE pipe fitting 1 and a locking hoop; the stainless steel pipe 3 is connected with the PE pipe fitting 1; a lock hoop is arranged at the joint of the stainless steel pipe 3 and the PE pipe fitting 1; the lock hoop is provided with an outer lock hoop 2 and an inner lock hoop 7; the inner wall of the stainless steel pipe 3 is provided with an annular groove which is occluded and connected with the PE pipe fitting 1, so that the connection strength is increased, and the sealing performance is improved; the inner wall of the outer lock hoop 2 is provided with an annular groove which is meshed with the outer wall of the joint of the PE pipe fitting 1 and the stainless steel pipe 3; the outer wall of the inner lock hoop 7 is provided with an annular groove which is meshed with the inner wall of the joint of the PE pipe fitting 1 and the stainless steel pipe 3; the PE pipe 1 can be prevented from creeping and is easy to position.

Further, the inner lock hoop 7, the PE pipe fitting 1 and the stainless steel pipe 3 form an inner lock structure; the outer lock hoop 2, the PE pipe fitting 1 and the stainless steel pipe 3 form an outer lock structure.

Further, the stainless steel pipe 1 is in a straight pipe type or a bent pipe type.

Further, the outer side end of the PE pipe fitting 1 connected with the lock hoop is externally connected with a pipe network 6; the lock hoop is connected with the PE pipe fitting 1 and the stainless steel pipe 3 and is arranged below the ground 5; the outer side end of the stainless steel pipe 3 is connected with an outer wall steel pipe 4.

As shown in fig. 3, the application scenario diagram of the straight-tube stainless steel tube, the PE pipe fitting, and the lock collar being connected and fixed is shown, and as shown in fig. 4, the application scenario diagram of the bent-tube stainless steel tube, the PE pipe fitting, and the lock collar being connected and fixed is shown.

Claims

1. A stainless steel is moulded and is changeed pipe fitting which characterized in that: comprises a stainless steel pipe, a PE pipe fitting and a lock hoop; the stainless steel pipe is connected with the PE pipe fitting; a lock hoop is arranged at the joint of the stainless steel pipe and the PE pipe fitting; the lock hoop is provided with an outer lock hoop and an inner lock hoop; the inner wall of the stainless steel pipe is provided with an annular groove which is in occlusion connection with the PE pipe fitting; the inner wall of the outer lock hoop is provided with an annular groove which is occluded with the outer wall of the joint of the PE pipe fitting and the stainless steel pipe; and the outer wall of the inner lock hoop is provided with an annular groove which is meshed with the inner wall of the joint of the PE pipe fitting and the stainless steel pipe.

2. The stainless steel-plastic conversion pipe fitting according to claim 1, wherein the inner locking hoop, the PE pipe fitting and the stainless steel pipe form an inner locking structure; the outer lock hoop, the PE pipe fitting and the stainless steel pipe form an outer lock structure.

3. The stainless steel-plastic conversion pipe fitting according to claim 1, wherein the stainless steel pipe is in a straight pipe type or an elbow type.

4. The stainless steel-plastic conversion pipe fitting according to claim 1, wherein an outer end of the PE pipe fitting, which is connected with the lock hoop, is externally connected with a pipe network; the locking hoop is connected with the PE pipe fitting and the stainless steel pipe and is arranged below the ground; and the outer side end of the stainless steel pipe is connected with the outer wall steel pipe.