Clamp type pipe joint

Abstract

The invention discloses a clamp type pipe joint. The clamp type pipe joint comprises a housing and a sealing device, wherein the housing is composed of a first semi-ring body and a second semi-ring body, the sealing device is composed of an annular frame body, a pressing ring and a sealing ring, the pressing ring movably sleeves the annular frame body, and the end of the annular frame body is abutted with the sealing ring. The first semi-ring body and the second semi-ring body are fixedly clamped on a pipe body by virtue of fixed screws and fixed nuts, and the purpose can be realized without movement or disassembly of a pipe, so that manpower and material resources are effectively saved, the maintenance time is shortened, and the service life of the pipe joint is prolonged. The invention provides the large-diameter clamp type pipe joint, which has the advantages of simple structure, convenience in installation, good sealing performance, firmness and stability.

Description

[0001] (1) Technical field [0002] The invention relates to a clamp type pipe joint, in particular to a large diameter clamp type pipe joint. [0003] (2) Background technology [0004] In large-scale compressed air or fluid pipeline systems, it is usually necessary to use larger diameter delivery pipelines in conjunction with small diameter delivery pipelines. Small pipe joints can be used for small diameter pipes, but this type of pipe joint is not suitable For pipelines with larger diameters, the connection strength cannot meet the requirements of pipelines with larger diameters. For the connection devices of larger diameter pipelines, the flange connection is generally used at present, which needs to be welded on site and then leak tested. If the weld has welding defects such as slag inclusion, it needs to be reworked, which has higher requirements for the on-site installation workers. The installation efficiency is low, and it is not easy to disassemble; in the prior art...

AI Technical Summary

Problems solved by technology

[0004] In large-scale compressed air or fluid pipeline systems, it is usually necessary to use a large-diameter delivery pipeline in conjunction with a small-diameter delivery pipeline. For small-diameter pipes, small pipe joints can be used, but this type of pipe joint is not suitable For pipelines with larger diameters, the connection strength cannot meet the requirements of pipelines with larger diameters

For the connection devices of larger diameter pipelines, flange connection is generally used at present, which requires on-site welding and then leak testing. If the weld has welding defects such as slag inclusion, it needs to be reworked, which has high requirements for on-site installation workers. The installation efficiency is low, and it is not easy to disassemble; in the prior art, another commonly used pipeline connection device is composed of an outer shell and a sealing device, and the sealing device is composed of a ring frame, two pressure rings and two "O"-shaped sealing rings ,Through the action of the annular arc surface, the annular inclined surface or the third annular inclined surface, the "O"-shaped sealing ring protrudes inward, so that the "O"-shaped sealing ring is in close contact with the outer wall of the fluid delivery pipeline, and the sealing connection and positioning of the pipeline are realized. It has problems such as complex structure and high cost