| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sampling nozzle structure of a gas flow path for preventing or inhibiting a gas from flowing out of the gas flow path when a preparation work for a sampling inspection is implemented. Ž<P>SOLUTION: In the sampling nozzle structure of the gas flow path, a blank flange 4 occludes the exit opening 2a of the sampling nozzle 2 provided in a gas duct 1, and is replaced with a collecting flange 5 when the gas is sampled. A member replacement jig 20 is provided, fixed and installed in the sampling nozzle 2. In the member replacement jig 20, a flange waiting area of the collecting flange 5 and an avoidance area of the blank flange 4 are provided on both sides of a normal position in the sliding direction of the blank flange 4 for occluding the exit opening 2a. When the blank flange 4 and the collecting flange 5 are replaced, flange sections of the blank flange 4 and the collecting flange 5 can be slid by the member replacement jig 20 in a direction orthogonal to an axial movement in the state where they are inhibited from being moved in the axial direction of the sampling nozzle 2. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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