Adaptive Underwater Oval Pipe Connector

Abstract

The invention belongs to the field of petroleum storage and transportation, in particular, relates to a self-adaption underwater elliptic pipe connector, and is suitable for local replacement and maintenance of underwater elliptic pipes. The self-adaption underwater elliptic pipe connector comprises a connecting pipe, wherein a sealing device is arranged in the connecting pipe; and two ends of the connecting pipe both seal the sealing device through fastening devices. Compared with the prior art, the self-adaption adjusting capacity of the sealing device enables the connector to simply and effectively seal the elliptic pipes, so that the problem of weak sealing performance of the elliptic pipes is solved; the plastic deformation of the elliptic pipes due to elliptic correction is prevented, so that the service life of the elliptic pipes is prolonged; the elliptic correcting process of the elliptic pipes is prevented, so that the underwater installing difficulty of the connector is reduced, and the construction cost is reduced; and a rubber sealing ring is matched with a valve stem to achieve convenience in maintenance and replacement of the sealing device of the connector.

Description

technical field [0001] The invention belongs to the field of petroleum storage and transportation, and in particular relates to an adaptive underwater elliptical pipeline connector, which is suitable for partial replacement and maintenance of underwater elliptical pipelines. Background technique [0002] After the underwater oil and gas pipeline has been in operation for a period of time, under the action of many factors such as erosion and external force, a certain position of the pipeline may be damaged or leak, and it needs to be repaired. For the maintenance of underwater oil and gas pipelines with leakage or partial damage, the method of cutting off the damaged section of the pipeline and connecting the new pipeline section with a connector is usually used. Due to the influence of factors such as manufacturing process, external force and truncation operation, the original underwater oil and gas pipeline may have a certain ellipticity at the truncated end of the original...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects of the prior art, the present invention provides a self-adaptive underwater oval pipeline connector, the sealing device of which realizes the self-adjustment of the oval pipeline through the pressure difference between the high-pressure fluid in the sealing ring and the environment and the elasticity of the sealing ring. Adaptation, so as to solve the problems of poor sealing performance of elliptical pipelines and plastic deformation caused by ellipse correction, and better realize the connection and maintenance of underwater elliptical pipelines

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