Overall lining corrosion-resisting alloy composite bend capable of achieving firm connection

Abstract

The invention discloses an overall lining corrosion-resisting alloy composite bend capable of achieving firm connection. The overall lining corrosion-resisting alloy composite bend comprises a pipe body. A lining pipe is arranged on an inner cavity of the pipe body. A corrosion-resisting alloy layer is arranged on the inner surface of the lining pipe. An epoxy resin layer is arranged on the outersurface of the lining pipe. A first sealing ring is arranged on the end portion of one end of the pipe body. A second flange plate is arranged at the position, close to the end portion, of one end ofthe pipe body. The overall lining corrosion-resisting alloy composite bend capable of achieving firm connection is simple in structure and high in practicability. An S-shaped structure is adopted on the whole, erosive force of liquid is greatly reduced, and the service life of the device is prolonged to a certain extent. Due to the fact that flange plates, nuts and fastening bolts are adopted at the two ends of the bend, transportation stability of high-pressure fluid in the bend is improved, and desoldering is unlikely to happening. Due to scouring preventive layers designed at the two bend positions, the whole device is made more durable. Due to the facts that the lining pipe is longer than the pipe body and the sealing ring is designed, liquid leakage at the connecting position of the device and pipelines is avoided and the overall lining corrosion-resisting alloy composite bend is suitable for application and popularization.

Description

technical field [0001] The invention relates to the technical field of metal pipe composites, in particular to a solidly connected integrally lined corrosion-resistant alloy composite elbow. Background technique [0002] Steel pipes play a very important role in pipeline transportation, and the role of elbows used in pipelines cannot be ignored. The problem of corrosion and easy wear of elbows has always been a subject of research by many people. Elbows made of different anti-corrosion materials and processes have been widely used in petroleum, chemical, natural gas, water pipes, and other pipelines. At present, there are many kinds of elbow designs, some of which are equipped with wear-resistant gaskets at the corners of the elbow, and some are coated inside and outside the elbow, etc. Many designs are too complicated, labor-intensive, costly, and only The corrosion problem is considered, and other problems are ignored, resulting in the elbows of these designs having no p...

AI Technical Summary

Problems solved by technology

At present, there are many kinds of elbow designs, some of which are equipped with wear-resistant gaskets at the corners of the elbow, and some are coated inside and outside the elbow, etc. Many designs are too complicated, labor-intensive, costly, and only The corrosion problem is considered, and other problems are ignored, resulting in the elbows of these designs having no practical value

But the structure of this device is too simple, the practicability is not strong, and when the liquid erosion force is too large, the welding part is easy to fall off, so it is not suitable for popularization and use.

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