| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe thickness measuring device capable of easily travel ing in a pipe for continuously measuring a thickness of the whole periphery of the pipe. SOLUTION: This pipe thickness measuring device comprises a travel cart axially traveling in the pipe, an inner wall heating means mounted at a front side in the traveling direction, of the travel cart for heating an inner wall of the pipe, a first inner wall temperature measuring means mounted at a rear side in the traveling direction of the travel cart for measuring a temperature of the inner wall of the pipe, and an operating means for operating the thickness of the pipe on the basis of a result of the measurement of the first inner wall temperature measuring means. Further a second inner wall temperature measuring means is mounted at a front side in the traveling direction of the inner wall heating means, or a third inner wall temperature measuring means is mounted at a rear side in the traveling direction, of the inner wall heating means. Further an inner wall cooling means is mounted for the heating means. COPYRIGHT: (C)2004,JPO
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