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apparatus for supplying balls to a pipeline by lækageafprøvning with one of balls defined trykvandsøjle.
apparatus for supplying balls to a pipeline by lækageafprøvning with one of balls defined trykvandsøjle.
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机译:通过用规定的球形阀之一的球形阀向管道供应球形阀的装置。
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摘要
A pipeline closing head, for use in testing a pipeline after it has been laid on a submerged bed by subjecting the pipeline temporarily to internal pressure through the use of filling and emptying balls, is constituted by a hollow cylindrical body having a crowned closing element at one end and containing, at its other end, an air tight chamber housing the filling and emptying balls. Ducts and control valves through which fluid is supplied to said chamber to activate the filling and emptying balls and supply fluid pressure to the interior of the pipeline are housed within the cylindrical body so that they do not overhang the closing head, which may slide along a conventional ramp for the pipeline.
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