| 摘要 |
PROBLEM TO BE SOLVED: To provide a steam desuperheater capable of reducing a required installation space. SOLUTION: A cooling water supply part 3 and a vortex generator 2 are integrally disposed in a central part of a steam passage 1. The fluid supply part 3 on the upstream side is provided with a plurality of injection nozzles 6. The injection nozzles 6 and a cooling water pipe 8 are communicated by a cooling water passage 7. The water pipe 8 is installed with an automatic control valve 9 allowing arbitrary adjustment of a valve opening. The triangle pole-shaped vortex generator 2 houses a piezoelectric element as a vortex detection means. The piezoelectric element and the control valve 9 are respectively electrically connected to a calculation control part 4. A cooling water is supplied from the nozzles 6 to steam flowing down through the steam passage 1 to reduce a temperature to a prescribed temperature, and a Karman vortex is generated by the vortex generator 2 and is detected. Thereby, a steam flow rate flowing down through the passage 1 is measured. COPYRIGHT: (C)2004,JPO
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