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AssigneeShanghai Vision Mechanical Joint Co., Ltd.
InventorsZhigang LU, Zhibing ZHAI
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Disclosed are a pipeline connecting device, a pipeline element coupling piece and a coupling method therefor. The pipeline element coupling unit comprises a plurality of coupling units, a gasket arranged at the coupling unit, and a fastening element. Each coupling unit comprises two engaging keys located at two coupling ends thereof, each engaging key has an engaging surface, and each engaging surface has a variable curvature radius. The fastening element is coupled to the coupling unit, wherein the pipeline element coupling piece is adapted to be pre-mount onto the two pipeline elements and be aligned with engaging keys and corresponding grooves of the pipeline elements. When the fastening element is operated to fasten together the coupling units, each engaging surface is deformed to change the curvature radius to substantially match the curvature radius of the groove circumference of the bottom of the groove of the pipeline element.
A pipeline element coupling piece for coupling at least two pipeline elements each having a groove and a groove circumference at a groove bottom of the groove, wherein the pipeline connecting device comprises:
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26-30. (canceled)
A coupling method for coupling two pipeline elements by a pipeline element coupling piece, wherein each of the two pipeline elements has a groove and a groove circumference of a groove bottom of the groove, wherein the coupling method comprises step of:
A coupling method for coupling two pipeline elements by a pipeline element coupling piece, comprising steps of:
Dependencies are inferred from the claim text.