F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
277/15, 170/60
F01D 25/00 (2006.01) F16J 15/00 (2006.01) F16J 15/447 (2006.01)
Patent
CA 1109801
ABSTRACT OF THE DISCLOSURE An assembly for sealing an interface between a high pressure steam chest and a casing, wherein high pressure steam flows from the steam chest into the interior of the casing. The assembly comprises a sealing element extending through the interface for preventing direct contact between the high pressure steam and the interface, and joined to the steam chest so that a steam tight joint is developed therebetween. The assembly further comprises a chamber defined by the steam chest, the casing, and the sealing element in communication with the interface between the steam chest and the casing; a first passageway having one end in communication with the interior of the casing and a second end in communication with the chamber, for passing steam from the interior of the casing to the chamber; and means for developing a pressure differential across the first passageway so that the steam pressure at the second end of the passageway is less than the steam pressure at the first end of the passageway. A low pressure region is provided having a steam pressure lower than the steam pressure in the steam chest; and a second passageway is provided, having one end in communication with the chamber and a second end in communication with the low pressure region for passing steam from the chamber to the low pressure region. - 1 -
325517
Carrier Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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