CN112728266A

CN112728266A - Steel lining polytetrafluoroethylene pipeline elbow structure

Info

Publication number: CN112728266A
Application number: CN202011589761.7A
Authority: CN
Inventors: 姚袁生; 仇桂芹; 陈光年; 庞德成
Original assignee: Jiangsu Fuhao Anticorrosion Technology Co ltd
Current assignee: Jiangsu Fuhao Anticorrosion Technology Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-04-30

Abstract

The invention discloses a steel lining polytetrafluoroethylene pipeline elbow structure, comprising: the elbow body and the ring flange of setting at elbow body both ends be provided with the inside lining return bend on the inner wall of elbow body, the structure of inside lining return bend includes: outer polytetrafluoroethylene bent pipe layer and cohesion tetrafluoroethylene bent pipe layer be provided with the metal bent pipe layer between outer polytetrafluoroethylene bent pipe layer and the cohesion tetrafluoroethylene bent pipe layer evenly be provided with a plurality of through-holes on the metal bent pipe layer.

Description

Steel lining polytetrafluoroethylene pipeline elbow structure

Technical Field

The invention relates to an elbow, in particular to a steel lining polytetrafluoroethylene pipeline elbow structure.

Background

In the chemical industry equipment pipeline elbow use, can be through the liquid that has temperature or corrosivity in pipeline elbow, for protection pipeline elbow, can set up the bushing pipe in pipeline elbow and carry out anticorrosive extension its life, however, because liquid temperature is higher in pipeline elbow in the use, and shut down the back temperature and can become lower, because the difference in temperature is great, the rising with heat and shrinking with cold is very obvious, the great deformation takes place easily for the bushing pipe in the pipeline elbow, reduction of service life. Especially, the elbow with large caliber generally refers to the elbow with the caliber of 600 cm-1000 cm, the forming rate of the elbow with large caliber is very low in the production process, and the qualification rate is generally only about 20-30%.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provides a steel lining polytetrafluoroethylene pipeline elbow structure with long service life.

In order to solve the technical problems, the invention adopts the technical scheme that: a steel-lined polytetrafluoroethylene piping elbow structure comprising: the elbow body and the ring flange of setting at elbow body both ends be provided with the inside lining return bend on the inner wall of elbow body, the structure of inside lining return bend includes: outer polytetrafluoroethylene bent pipe layer and cohesion tetrafluoroethylene bent pipe layer be provided with the metal bent pipe layer between outer polytetrafluoroethylene bent pipe layer and the cohesion tetrafluoroethylene bent pipe layer evenly be provided with a plurality of through-holes on the metal bent pipe layer.

In order to better solve the technical problems, the invention adopts the further technical scheme that: a plurality of annular grooves are uniformly arranged in the inner polytetrafluoroethylene bent pipe layer at equal intervals, and stainless steel supporting ring sleeves are respectively embedded in the annular grooves.

In order to better solve the technical problems, the invention adopts the further technical scheme that: the metal elbow layer is made of iron or stainless steel materials.

The invention has the advantages that: the utility model provides a steel lining polytetrafluoroethylene pipeline elbow structure, increase the inside lining return bend in the elbow, the inside lining return bend adopts inside and outside double-deck polytetrafluoroethylene return bend layer to constitute, and increase the metal return bend layer between inside and outside double-deck polytetrafluoroethylene return bend layer, and evenly set up a plurality of through-holes on the metal return bend layer, so that inside and outside double-deck polytetrafluoroethylene return bend layer realizes the integration in through-hole department and moulds plastics the connection, and simultaneously, evenly set up a plurality of annular grooves on inside polytetrafluoroethylene return bend inner wall, and support through stainless steel support ring cover in the annular groove, elbow overall structure intensity is good, can increase the ability of resisting the deformation when the shrinkage that rises with heat, long service life, can effectively guarantee the production qualification rate of heavy-calibre elbow.

Drawings

Fig. 1 is a schematic front view of a steel-lined polytetrafluoroethylene pipe elbow structure of the invention.

Fig. 2 is a schematic perspective view of the metal elbow layer in fig. 1.

Fig. 3 is a schematic perspective view of a steel-lined polytetrafluoroethylene pipe elbow structure of the present invention.

In the figure: 1. the elbow comprises an elbow body, 2, a flange plate, 3, an inner lining bent pipe, 31, an outer polytetrafluoroethylene bent pipe layer, 32, an inner polytetrafluoroethylene bent pipe layer, 321, an annular groove, 3211, stainless steel support ring sleeves, 33, a metal bent pipe layer, 331 and a through hole.

Detailed Description

The details of the present invention are described below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, 2 and 3, a steel-lined teflon pipe elbow structure comprises: elbow body 1 and the ring flange 2 of setting at elbow body 1 both ends be provided with inside lining return bend 3 on elbow body 1's the inner wall, the structure of inside lining return bend 3 includes: outer polytetrafluoroethylene bent pipe layer 31 and interior polytetrafluoroethylene bent pipe layer 32 be provided with metal bent pipe layer 33 between outer polytetrafluoroethylene bent pipe layer 31 and the interior polytetrafluoroethylene bent pipe layer 32 evenly be provided with a plurality of through-holes 331 on the metal bent pipe layer 33.

As shown in fig. 1 and 3, in this example, in order to increase the structural strength, a plurality of annular grooves 321 are uniformly arranged at equal intervals in the inner teflon layer 32, and stainless steel support rings 3211 are respectively embedded in the annular grooves 321.

As shown in fig. 1 and 2, in this example, the metal elbow layer 33 is made of iron or stainless steel.

The utility model provides a steel lining polytetrafluoroethylene pipeline elbow structure, increase the inside lining return bend in the elbow, the inside lining return bend adopts inside and outside double-deck polytetrafluoroethylene return bend layer to constitute, and increase the metal return bend layer between inside and outside double-deck polytetrafluoroethylene return bend layer, and evenly set up a plurality of through-holes on the metal return bend layer, so that inside and outside double-deck polytetrafluoroethylene return bend layer realizes the integration in through-hole department and moulds plastics the connection, and simultaneously, evenly set up a plurality of annular grooves on inside polytetrafluoroethylene return bend inner wall, and support through stainless steel support ring cover in the annular groove, elbow overall structure intensity is good, can increase the ability of resisting the deformation when the shrinkage that rises with heat, long service life, can effectively guarantee the production qualification rate of heavy-calibre elbow.

Claims

1. A steel-lined polytetrafluoroethylene piping elbow structure comprising: elbow body (1) and ring flange (2) of setting at elbow body (1) both ends, its characterized in that: be provided with inside lining return bend (3) on the inner wall of elbow body (1), the structure of inside lining return bend (3) includes: outer polytetrafluoroethylene bent pipe layer (31) and cohesion tetrafluoroethylene bent pipe layer (32) be provided with metal bent pipe layer (33) between outer polytetrafluoroethylene bent pipe layer (31) and cohesion tetrafluoroethylene bent pipe layer (32) evenly be provided with a plurality of through-holes (331) on metal bent pipe layer (33).

2. The steel-lined polytetrafluoroethylene piping elbow structure according to claim 1, wherein: a plurality of annular grooves (321) are uniformly arranged in the inner polytetrafluoroethylene elbow layer (32) at equal intervals, and stainless steel supporting ring sleeves (3211) are respectively embedded in the annular grooves (321).

3. The steel-lined polytetrafluoroethylene piping elbow structure according to claim 2, wherein: the metal elbow layer (33) is made of iron or stainless steel materials.