| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable a reduction in a pressure loss of a steam valve device during a valve open time period and a reduction of manufacturing cost of the steam valve device. <P>SOLUTION: A steam valve device 90 includes a main steam stop valve 1, a steam regulating valve 21 and an intermediate flow path 80 connecting them. The main steam stop valve 1 and the steam regulating valve 21 include: respectively, casings 31 and 41 where flow paths 61 and 71 are formed between horizontal inlet ports 33 and 43 and outlet ports 34 and 44 opened downward and valve seats 35 and 45 are arranged in the flow paths 61 and 71; valve elements 32 and 42 vertically movable within the casings 31 and 41; and valve rods 37 and 47 for driving the valve elements 32 and 42. The valve rods 37 and 47 extend upward, and they are pulled off upward in a direction to outside of the casings 31 and 41 when opening the flow paths. The intermediate flow path 80 changes the flow direction of main steam flowing out of the outlet port 34 of the main steam stop valve 1 from downward direction to horizontal direction to guide the main steam toward the out ports 44 of the steam regulating valves 21 and 22. <P>COPYRIGHT: (C)2013,JPO&INPIT |
