Pipeline connection structure

Abstract

The invention relates to a pipeline connection structure. Two mother pipes are connected through a connecting piece; the connecting piece comprises a connecting pipe and pipe couplings sheathed on both ends of the connecting pipe; both ends of the connecting pipe are respectively inserted in the two mother pipes, and are respectively provided with a seal ring at the joints with the mother pipes; each pipe coupling comprises an elastic small loop and an elastic big loop; the small loop is in the shape of a circular ring; the big loop is in the shape of an elliptical ring; the small loop and big loop are arranged coaxially; both ends of the small loop are respectively connected with both ends of a major axis of the big loop through elastic pieces; the small loop is sheathed on the connecting pipe and fixed by a fixing device; a raised head is inserted into a notch, and the outer end surface of the small loop is made to abut against a first collar flange; the first collar flange is arranged on the connecting pipe; the big loop is sheathed on the mother pipes; each mother pipe is provided with a second collar flange for positioning; and the length of the major axis of the big loop is greater than the external diameter of the second collar flange, and the length of the minor axis is less than the external diameter of the second collar flange.

Description

technical field [0001] The invention relates to a pipeline connection structure. Background technique [0002] With the development of science and technology, the application of piping system is becoming wider and wider. Existing pipeline connection methods are generally clamp type connection, ferrule type connection, socket type connection and welding type connection. The ferrule connection has certain requirements on the installation space and the wall thickness of the pipe; the socket connection needs to be pre-formed at the connection pipe end; the welded pipe produces residual stress, and the pipe expansion and contraction compensation performance for temperature changes is low; the clamp If the clamp is not in place, it is easy to leak, and when the installation position interferes with the surrounding parts, although rotating the clamp can meet the installation requirements, but the installation position is narrow, special tools must be used for disassembly and assem...

AI Technical Summary

Problems solved by technology

The ferrule connection has certain requirements on the installation space and the wall thickness of the pipe; the socket connection needs to be pre-formed at the connection pipe end; the welded pipe produces residual stress, and the pipe expansion and contraction compensation performance for temperature changes is low; the clamp If the clamp is not in place, it is easy to leak, and when the installation position interferes with the surrounding parts, although rotating the clamp can meet the installation requirements, but the installation position is narrow, special tools must be used for disassembly and assembly of the clamp, so the above Several kinds of pipeline connections have the disadvantages of invariable installation and disassembly, and time-consuming and labor-intensive shortcomings

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