Clamping-ring-type welding-free pressure test plugging device

Abstract

The invention discloses a clamping-ring-type welding-free pressure test plugging device. The device comprises a fixed ring installed at the end of a pipeline and a skid-resistance fastening pressing sheet which is installed between the fixing ring and the outer surface of the pipeline, wherein a plugging blind plate is further installed at the end of the pipeline; a pressure sealing ring is further installed in the plugging blind plate, so that a plane between a bevel face at the end of the pipeline and the pressure sealing ring achieves effective face sealing. The device is easy to operate, and the quality problem of welded plugging is solved; moreover, the problem that the installing construction period is too long is also solved, and the efficiency of a pipeline pressure test is greatlyimproved; moreover, the device can be repeatedly utilized, and the cost for installing and building the pipeline is reduced.

Description

technical field [0001] The invention relates to pipelines, in particular to a clasp-ring type welding-free pressure test plugging device for medium and low pressure pipeline pressure tests. Background technique [0002] At present, during the strength test and pressure test of the pipeline, the end of the pipeline is usually sealed in the form of a welded pressure test cap or a blind flange, so as to achieve the purpose of pressure-bearing sealing. However, since the above-mentioned sealing method requires welding and pressure testing to seal the pipe cap or blind flange during the pipeline construction pressure test, it not only leads to welding defects, but also requires inspection of the welded joint, which brings a negative impact on the pressure test period. To a certain extent, it is easy to cause insufficient construction period and affect the construction progress; moreover, it also needs to test the cost of material procurement in a large amount, and there is a wast...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to overcome the above-mentioned shortcomings existing in the prior art, and provide a snap ring type welding-free pressure test plugging device, which is easy to operate, not only solves the quality problem of welded plugging; The problem of long installation period greatly improves the efficiency of pipeline pressure testing; at the same time, it can be reused, reducing the cost of pipeline installation and construction

Images