| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a tube hole position measurement method capable of simply and highly accurately measuring a relative deviation amount of each tube hole of a tube plate and a tube support plate.SOLUTION: A laser oscillator 11 is installed at a hole inlet 4b of a tube hole 4a of a tube plate 4. A laser receiver 13 is installed at a hole outlet 4c of the tube hole 4a of the tube plate 4. A laser beam L is irradiated at a light receiving center of the laser receiver 13 from the laser oscillator 11 making an irradiation center match a center of the hole inlet 4b in the tube hole 4a of the tube plate 4 so that an optical axis is made to match the center axis of the tube hole 4a of the tube plate 4. The laser receiver 13 is isolated from the tube hole 4a of the tube plate 4. Next, the laser beam L is irradiated to the laser receiver from the laser oscillator 11 in a state that the laser receiver is inserted into a tube hole 5a of a tube support plate 5 and its light receiving center is located on the center axis of the tube hole 5a of the tube support plate 5, and a deviation amount between the light receiving center of the laser receiver and an actual laser beam reception position is measured by irradiating the laser beam L to the laser receiver from the laser oscillator 11.</p> |
