Jack catchs type submarine pipeline coupler

Abstract

The invention provides a clamping jaw type submarine pipeline connecting device, which comprises a connecting device casing, a connecting annular plate and a pipe connector, wherein the pipe connector is provided with a locating columnar hole; a clamping jaw has a locating shaft which is deeply inserted into the locating columnar hole; the clamping jaw is arranged on the pipe connector through a spring; an annular roof plate of an upper pressure chamber is arranged between the connecting device casing and the pipe connector; a drive ring is arranged on the annular roof plate; an annular bottom plate of a lower pressure chamber is arranged on the drive ring; a tapered hole of the drive ring contacts the back conical surface of the clamping jaw; the connecting device casing has a clapboard;the connecting device casing at both sides of the clapboard is provided with a lower pressure chamber oil inlet and an upper pressure chamber oil inlet; and the clamping jaw has a seizing mechanism matched with the prior submarine pipeline clamping surface. The clamping jaw type submarine pipeline connecting device has accurate location and flexible rotation and can be matched with the end shapesof various pipe fittings to ensure reliable sealing; moreover, the connecting device has wide application prospect in deep sea oil-gas field development.

Description

Jaw Type Submarine Pipeline Coupling (1) Technical field The invention relates to a pipeline coupling device, in particular to a remotely driven subsea pipeline coupling. (2) Background technology Jaw style pipe couplings are commonly used to provide remote actuated connections between pipes or other fittings. In the technical scheme disclosed in the patent document of US Patent Application No. 5971076, the power is provided by the pressure response method, the drive ring and the coupling housing, and the upper and lower ring plates are added to form two sealed chambers, and the upper chamber is fed with high-pressure oil. , the drive ring moves up to open the claws; the lower chamber is filled with high-pressure oil, and the drive ring moves down to close the claws. Three shapes of claws are provided, but there are problems of impact and inflexibility when the claws rotate; the double-cone seal is used between the pipeline connection body and the submarine pipeline, and...

AI Technical Summary

Problems solved by technology

Three shapes of claws are provided, but there are problems of impact and inflexibility when the claws rotate; the double-cone seal is used between the pipeline connection body and the submarine pipeline, and the structural positioning is inaccurate. Deeper waters can improve the sealing structure

The technical solution disclosed in another US patent document with the application number 4693497 is compared with the technical solution in the above-mentioned patent document. The shape of the claw is different from the outer diameter of the pipe, and the local structure is changed, but the adapter and the claw The cylindrical surface of the body is matched, and there is stress concentration

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