Packing ring cartridge with adjusting screws

Details Packing ring cartridge with adjusting screws Packing ring cartridge with adjusting screws

1983-12-05

1984-08-28

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 12, 277188R, 251214, F16J 1512

Patent

active

044680392

ABSTRACT:
A pressure energizable packing assembly (47) for sealing the stem and valve body of a high pressure valve. The assembly comprises one or more sets (60, 61) of packing rings (62) which are adapted to be compressed between a pair of retainer rings (64, 65) and radially expanded into sealing engagement with the valve stem (45) and valve body (11). The retainer rings are actuated by Belleville springs (70) in a preloaded condition of the assembly and additionally by fluid pressure in the valve body after installation. The packing assembly includes an adapter ring plug (71) for accommodating its connection in the valve body. The packing assembly is assembled as a cartridge and held together by screws (77) which extend through the adapter ring (71), the outer retainer ring (64), the packing ring sets (60, 61) and their separating spacer ring (63), and which are anchored in the inner retainer ring (65). The screws can be adjustably tightened to place the cartridge in a desired preloaded condition after installation in a packing chamber (46a, 46b). The packing assembly is adapted for use as a cartridge in packing chambers without concern for the effect of tolerance "stack-up" in the axial dimension and without adjustment in the number of Belleville springs.

REFERENCES:
patent: 3259358 (1966-07-01), Tripoli
patent: 4262690 (1981-04-01), Binegar
patent: 4379557 (1983-04-01), Saka
patent: 4384726 (1983-05-01), Meyer

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