| 摘要 |
The method for measuring clearances between tube zones of a heat exchanger comprises the following steps: engaging a string (22) of emitter sources in said zone of a first tube (14); circulating a receiver detector (24) in said zone of a second tube (16); recording the signal picked up by the detector (24) as it travels said zone of the second tube (16); estimating the separation between the respective zones of the first and second tubes. Said zones are bows (10) arranged in such a way that said zone of the bow of the first tube (14) extends facing said zone of the bow of the second tube (16), two opposite ends of the string (22) being acted upon in such a way as to immobilize the string in the bow of the first tube (14) while the detector (24) is circulating in the bow of the second tube (16). |
