| 摘要 |
PROBLEM TO BE SOLVED: To prevent a feed valve element from turning along an inner circumference wall of a cylinder surface of a valve chamber at a position opening a feed valve port. SOLUTION: In a liquid force feed device 1 making liquid flow in from a liquid flow in port 16 at first by opening an exhaust valve port 51 and closing the feed valve port 50, and forcibly feeding liquid residing in a hermetic vessel 2 from a liquid discharge port next by closing the exhaust port 51 and opening the feed valve port 50, an inner circumference wall at a working steam introduction port 11 of the feed valve 50 is formed in a conical surface 60 expanding toward the working steam introduction port 11 and a cylindrical surface 61 continuing from the conical surface 60, a spherical feed valve element 53 opening and closing the feed valve port 50 is disposed in a valve chamber 62 comprising the conical surface 60 and the cylindrical surface 61, an operation rod 49 of an exhaust valve element 47 operating and opening the feed valve element 50 is disposed at an inner side of a hermetic vessel 2 of the feed valve port 50, a temperature response member 63 is attached with projecting from an inner circumference wall of the cylindrical surface 61 of the valve chamber 62, and condensation at the working steam introduction port 11 is discharged into the hermetic vessel 2 by deformation of the temperature response member 63. COPYRIGHT: (C)2009,JPO&INPIT
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