| 摘要 |
1530170 Valves CONTROL COMPONENTS Inc 2 July 1976 [11 July 1975] 27721/76 Heading F2V [Also in Division F4] Stream is conditioned to reduce its temperature and pressure as it flows through a housing 12 from an inlet 14 to an outlet 20, the housing containing a steam flow control valve comprising a valve plug 24 slidable in a chamber 25 of the housing, and operated through a valve stem 26 by an actuator (not shown) connected by a clamp 27 to the stem. Passageways 28 extend through the valve plug to equalize the steam pressure on the end faces 30, 32 of the plug. The steam pressure is reduced as it passes through a labyrinth 16 (see also Fig. 4) and the steam temperature is reduced by spraying into it cooling water through means 36 (see Figs. 2, 3). The cooling water is supplied through a conduit 34 having substantially no physical contact with the housing 12 and the rate of cooling water supplied is determined by a sensor 34 in the outlet 20 acting on a coolant water control assembly 38. |
