| 摘要 |
PROBLEM TO BE SOLVED: To provide a leakage testing tool for flanges capable of safely and accurately measuring the quantity of leakage from connection parts of flanges with simple configuration. SOLUTION: A circumferential groove 12 formed in an adhesion part 3 to be sheathed in a peripheral fastening body 2 forms an air-tight channel 11 circumferentially along a connection part J in a flange together with the peripheral surfaces of flanges 20a and 20b. The whole of gas (A) which has leaked from the connection part J flows into a sampling tube 5 through the channel 11. By measuring the quantity of flow of the gas with a flowmeter, it is possible to accurately measure the quantity of leakage. COPYRIGHT: (C)2006,JPO&NCIPI
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