F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/12, 277/47,
F16J 15/06 (2006.01) F04D 29/08 (2006.01) F16J 15/40 (2006.01) F16J 15/44 (2006.01)
Patent
CA 1217404
A BUSHING SEAL VALVE ABSTRACT OF THE DISCLOSURE A bushing seal is disclosed for sealing a rotary member and having a face portion which engages a stationary housing and the pressure of a sealing fluid admitted to the bushing urges the face portion against the housing with a force sufficient to prevent freezing of the bushing when the pressure of the sealing fluid is high. A valve is provided for bleeding sealing fluid from a side of the bushing opposite a side against which the sealing fluid is exerting pressure- The valve permits variable flow rate of sealing fluid to atmosphere with the flow rate an inverse function of the pressure of the sealing fluid. By bleeding off fluid, the valve causes a pressure drop across the bushing with the sealing fluid urging the bushing against the housing with an additional force sufficient to prevent subsynchronous whirl when the pressure of the sealing fluid is low.
445532
A-C Compressor Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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