Special fixture of chemical pipeline leakage blocking with pressure

Abstract

The invention relates to a special fixture for plugging leakage of chemical pipelines under pressure. The left clamping body and the right clamping body of an integral part are connected by fasteners. The axial side of the integral part has a pipe receiving hole. It forms the first sealing surface with the annulus of the workpiece pipe, and the other axial surface of the integral part cooperates with the outer contour of the equipment flange to form the second sealing surface. A sealing cavity is formed between the two sealing surfaces, and the cavity of the sealing cavity There are several glue injection holes on the wall; there is a radial protruding ring on the cavity wall, and the inner diameter of the radial protruding ring is smaller than the internal diameter of the cavity wall of the sealing cavity. In the present invention, the left clamp body and the right clamp body are combined on the equipment flange first, and the radial protruding ring of the fixture is embedded in the gap between the two equipment flanges, and then the connecting ear plate is connected with the connecting fastener. The left clip body and the right clip body are connected into an integral part. Then use a glue injection gun to inject solid sealant into the sealing chamber through the glue injection hole, so that the welded part of the equipment flange contained in the sealing chamber can be plugged.

Description

technical field [0001] The invention belongs to a tool used in the field of chemical industry, in particular to a special clamp for plugging leaks under pressure without stopping. Background technique [0002] The chemical process is a continuous process carried out under complex conditions such as high temperature, high pressure, and cryogenic temperature, and the raw materials and products are generally flammable, explosive, toxic and harmful. Therefore, once the chemical transportation pipeline leaks, the consequences will be severe Unbelievable. In the prior art, the connection of two pipelines generally adopts such as figure 1 The method shown: After the nozzles of pipe A 1 and pipe B 2 are aligned, use two equipment flanges 4 and 5 to pass through the equipment fastener 6, and the butt joints of the nozzles are connected together under the cooperation of the seal , and then welded on the outside of the two equipment flanges 4 and 5 to form an integral sealed pipeline...

AI Technical Summary

Problems solved by technology

The problem is: the welding joint 3 between the equipment flanges 4 and 5 and the pipeline often leaks due to factors such as incomplete penetration, slag inclusion, chemical medium corrosion, etc.

This method is not only time-consuming, labor-intensive and inefficient, but also must be stopped before processing when encountering critical pipe sections, which will seriously affect normal production and cause losses to the enterprise

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