Pipeline repair device

Abstract

The invention discloses a pipeline repair device which comprises an upper shell body, a lower shell body and sealing gaskets arranged on the upper shell body and the lower shell body correspondingly. Flange and bolt connecting pieces used for joining the upper shell body and the lower shell body into a whole shell in a butt joint mode are arranged on the two sides of the upper shell body and the lower shell body correspondingly. Each sealing gasket comprises radial sealing bodies and axial sealing bodies. The upper shell body and the lower shell body are each provided with radial sealing grooves and axial sealing grooves used for installing the radial sealing bodies and the axial sealing bodies correspondingly. The upper shell body or the lower shell body is provided with protruding protective walls arranged on the outer sides of the axial sealing grooves. When the upper shell body and the lower shell body are in a relatively butt joint state, the protective walls closes gaps between correspondingly flanges from the outsides. By adoption of the pipeline repair device, the situation that accelerated aging of the sealing gaskets are caused by exposure out of the shell can be effectively prevented; and meanwhile, the defect that the portions, located in the axial grooves, of the sealing gaskets are squeezed out of the sealing grooves or burst due to overlarge pressure can be overcome, the anti-pressure ability and the reliability are greatly improved, and the sealability and reliability are higher.

Description

technical field [0001] The invention relates to the technical field of pipeline emergency repair equipment, in particular to a pipeline emergency repair joint for rapid emergency repair of leaked or damaged pipelines. Background technique [0002] At present, with the increasing development of urban construction, various pipelines are more and more used in various infrastructures such as water supply, drainage, heat supply, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, and water conservancy. [0003] Due to factors such as building or road construction, the pipeline may leak or be damaged, and it needs to be repaired. Taking urban water supply pipelines as an example, they generally use ductile iron pipes or reinforced concrete cement pipes. During the use of pipelines, due to Building or road construction and other factors, these pipelines may leak or be damaged, especially the upper water pipe is more prone to accidents. [0004...

AI Technical Summary

Problems solved by technology

[0006] First, after the emergency repair of the Huff-type pipeline repair is completed, although the axial gasket between the upper shell and the lower shell is compressed, there will be a certain gap between the flanges of the upper and lower shells. As a result, the side of the axial gasket will be exposed from the gap, which is prone to accelerated aging and has the risk of failure after long-term use

[0007] Second, in order to ensure the sealing performance of the mating part of the upper shell and the lower shell, the fastening bolts will exert a large pressure on the gasket, and the gasket in the axial groove will be squeezed out of the seal groove due to excessive pressure or Burst, pressure resistance and reliability need to be further improved

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