| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbine temperature measuring device capable of securing response speed, and suppressing vibration. SOLUTION: This turbine temperature measuring device for measuring the steam temperature in a turbine is formed by inserting a sheathed thermocouple into a metal protection tube and by projecting the tip part of the sheathed thermocouple from the tip of the metal protection tube. Chrome carbide is coated with the thickness of 0.07-0.2 mm by spraying on the whole periphery in a range wherein some position within 5 mm in the tip direction from a metal protection tube tip equivalent position on the sheath surface of the sheathed thermocouple is used as the start point and some position in the length direction from backward 50 mm to 100 mm is used as the end point, and the outer diameter of the sheath is formed to be a narrow outer diameter of the diameter of 4-8 mm in the ranged of 10-20 mm in the tip part axial direction, and a part other than the tip part is formed to have the outer diameter of the diameter of 10-20 mm. COPYRIGHT: (C)2006,JPO&NCIPI
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