Inserted steel pipeline connecting structure

Abstract

The invention discloses an inserted steel pipeline connecting structure for pipeline connection. The structure comprises turned edges and flanges which are positioned on two sides of a pipeline connecting part, wherein each turned edge consists of a turned edge flange and a turned edge adapter pipe; pipelines to be connected are inserted into the turned edge adapter pipes on two sides of the connecting part respectively; a pipeline connecting end on one side is positioned outside each turned edge adapter pipe, and a pipeline connecting end on the other side is positioned inside each turned edge adapter pipe; welding is performed at the ends of the turned edge adapter pipes along the peripheries of the pipelines, so that the turned edges are in sealed connection with the pipelines; each flange is sleeved on each turned edge adapter pipe; and the flanges on two sides are tightly connected. By the inserted steel pipeline connecting structure, a steel pipe is inserted into each turned edge, is tightly matched and accurately positioned, cannot be misaligned during welding, and is conveniently and firmly welded; moreover, a welding slope is not needed to be processed at the end of each turned edge adapter pipe, the process is simple, and efficiency is high.

Description

technical field [0001] The invention relates to a connecting pipe fitting, in particular to an inset steel pipe connecting structure for connecting pipes. Background technique [0002] In petrochemical, electric power, nuclear power and other industrial fields, flange connection is one of the common ways of connecting pipes and fittings. The loose sleeve flange is suitable for the connection of steel, aluminum and other non-ferrous metals, stainless steel, acid-resistant steel containers or pipelines, and corrosion-resistant pipelines. Loose flanges generally use flanging, steel rings, etc. to put the flange on the pipe end, and the flange can move on the pipe end, often in the form of flanging and loose flange. The steel ring or flange is the sealing surface, and the function of the flange is to compress them. The loose flange is not in contact with the medium due to being blocked by the steel ring or the flange. [0003] Loose flanges can be divided into three types: fl...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of easy dislocation of welding, poor welding quality, complicated processing procedure and long connecting part of the welded end, and provide a new structure for The interpolation steel pipe connection structure of the pipe connection, the interpolation connection method is adopted between the pipe, the pipe fittings and the flange, the pipe is inserted into the flange to take over the inside, the fit is tight, the positioning is accurate, and there will be no misalignment during welding. Convenient and reliable; and this kind of flanging / flange structure does not need to process the welding groove at the end, the process is simple and the efficiency is high

Images