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DEVICE FOR SHUTTING OFF FLOW PASSAGE IN PIPE AND METHOD FOR SHUTTING OFF FLOW PASSAGE OF FLUID PIPING SYSTEM
DEVICE FOR SHUTTING OFF FLOW PASSAGE IN PIPE AND METHOD FOR SHUTTING OFF FLOW PASSAGE OF FLUID PIPING SYSTEM
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机译:用于切断管道中的通流的装置和用于切断流体管道系统中的通流的方法
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摘要
PROBLEM TO BE SOLVED: To efficiently, reliably and easily perform the operation of shutting off a flow passage between the mating surfaces of both connection flange portions with little effort while avoiding the leakage of fluid in a pipe and to simplify and miniaturize a leakage structure by rationally devising the width of a partition plate valve.;SOLUTION: A shut-off operation cover B that is mountable to both pipe portions while sealing the outer peripheries of the connecting flange portions thereof is provided with both a partition plate valve 8 having a sheet-shaped valve plate 8A that can be inserted through a gap created between the connecting flange portions by the operation of loosening a fastener 5 and be moved up to a position for shutting off the flow passage in the pipe, and a sliding guide means C for sliding and guiding the valve plate 8A of the partition plate valve 8 to a flow passage shutting position and a flow passage opening position while holding the valve plate sealed. The width of the valve plate 8A of the partition plate valve 8 is greater than the inside diameter of each pipe portion and smaller than the spacing between the bolts 5A of the fastener 5 that are opposite to each other across the pipe axis of each pipe portion.;COPYRIGHT: (C)2008,JPO&INPIT
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