Sealing means for pressure relief valves and methods of assembly

Details Sealing means for pressure relief valves and methods of assembly Sealing means for pressure relief valves and methods of assembly

1994-08-30

1996-03-19

Chambers, A. Michael

Fluid handling

Processes

Cleaning, repairing, or assembling

251 611, 251 612, 251175, 251187, 251332, F16L 5518, F16K 31145

Patent

active

054996481

ABSTRACT:
A safety relief valve (12) for a pressure vessel (10) in which the main valve member (28) includes a valve plate or disc (52) and a retainer plate (64) having a flexible membrane or diaphragm (62) stretched therebetween in a taut relation to provide a frusto-conical shape (FIG. 3) for obtaining bubble-tight sealing against valve seat (26). A fluid chamber (116) is provided between valve plate (52) and retainer plate (64) and inlet fluid pressure is communicated through opening (118) of jack screw (106) to the fluid chamber (116) for providing inlet fluid pressure thereto to force valve plate (52) and retainer plate (64) apart for tensioning of flexible membrane (62) into a frusto-conical shape. A jack screw (106) is threaded within a bushing (94) carried by retainer plate (64). Upon rotation of jack screw (106), valve plate (52) and retainer plate (64) are forced away from each other for tensioning flexible membrane (62) into a frusto-conical shape. The initial sealing of main valve member (28) is by contact of flexible membrane (62) with seat (26) and the sealing pressure increases as the inlet pressure increases due to differential pressure across the flexible membrane (62). The method of assembly includes the forcing of valve plate (52) and retainer plate (64) away from each other with manual adjusting means (106) to tension the flexible membrane (62) a predetermined amount into a frusto-conical shape.

REFERENCES:
patent: 1956977 (1934-05-01), Shawn
patent: 2393427 (1946-01-01), Sparrow
patent: 2412490 (1946-12-01), Biggle
patent: 3211418 (1965-10-01), Klinger-Lohr
patent: 3394732 (1968-07-01), Lisciani
patent: 3477456 (1969-11-01), Powell
patent: 3583432 (1971-06-01), Powell
patent: 3722852 (1973-03-01), Powell
patent: 3835878 (1974-09-01), Braidt et al.
patent: 4312375 (1982-01-01), Leinemann
patent: 4705065 (1987-11-01), McNeely
patent: 4779641 (1988-10-01), Charm et al.
patent: 5163471 (1992-11-01), Powell
Seminar Survey "Groth Pressure/Vacuum Relief Valves And Flame Arresters" Groth Corporation, 1993.

Affiliated with

Also associated with

Rating

Sealing means for pressure relief valves and methods of assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sealing means for pressure relief valves and methods of assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sealing means for pressure relief valves and methods of assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1954108