A pipeline connection device with double plugs and its sealing connection method

Abstract

The invention discloses a pipeline connecting device with double inserts and a sealing connecting method of the pipeline connecting device. The device comprises a support, a first insert, a second insert, a first swelling sealing ring and a second swelling sealing ring, wherein the support is provided with a forming chamber; a first convex channel and a second convex channel are formed in the inner wall of the forming chamber; the first insert and the second insert are respectively provided with outer walls matched with the forming chamber; the first swelling sealing ring and the second swelling sealing ring comprise outer walls and annular cavities formed by the outer walls; the first swelling sealing ring is provided with a first injection port; a second injection port is formed in the outer wall of the second swelling sealing ring; when the first insert and the second insert are inserted into the forming chamber, a swelling material swells to expand the elastic outer walls of the first swelling sealing ring and the second swelling sealing ring, so as to press the first convex channel and the second convex channel in the inner walls of the forming chamber of the support, and the outer walls of the first insert and the second insert, and the sealing at the joint part of the support and the first insert and the second insert is realized.

Description

technical field [0001] The invention relates to the field of pipe materials, in particular to a pipe connection device with double plugs and a sealing connection method thereof. Background technique [0002] Pipelines are the fastest, economical and reliable way to transport media. Natural gas, water, oil, etc. can all be transported through pipelines. With the development of the economy, more and more pipes are used, and the pipe diameters are also getting larger. [0003] The connection technology of the pipeline has a very important influence on the construction process of the pipeline or the sealing effect of the pipeline. The existing pipeline connection methods are nothing more than flange connections, quick joint connections, etc., but these connection methods are not There are certain flaws. For example, the common flange connection is troublesome to install, and there are many accessories such as bolts and cushions. Leakage is prone to occur when the bolts are tig...

AI Technical Summary

Problems solved by technology

For example, common flange connections are troublesome to install, and many accessories such as bolts and cushions are used. Leakage is prone to occur when the bolts are tightened asymmetrically. Due to the large number of bolts, the workload of fastening bolts is large and the installation cost is high. When used for underground transportation pipelines, because the pipelines need to be filled with soil, there is often no hard support attached, and it is easy to cause damage to the connecting parts and fail when the foundation settles.

Images