Mechanical sealing means for rotary fluid coupling

Details Mechanical sealing means for rotary fluid coupling Mechanical sealing means for rotary fluid coupling

1981-07-30

1984-07-31

Arola, Dave W.

Pipe joints or couplings

With lubrication

285 98, 285190, F16L 700

Patent

active

044626193

ABSTRACT:
A fluid coupling for interconnecting a liquid-conveying duct in a shaft element to a duct in a hub element, the two elements being rotatable relative to each other. The shaft element has a central passageway subjected to fluid under high pressure and has an enlarged-diameter end communicating with a smaller-diameter portion. The end of the large diameter portion of the shaft element remote from its small diameter portion is subjected to fluid under high pressure in said passageway; while the opposite end of the large diameter shaft portion is subjected to a sealing fluid. The pressure of the sealing fluid is always greater than that of the high-pressure fluid, with the result that the high-pressure fluid will not enter the chamber filled with sealing fluid to decompose it and form an emulsion.

REFERENCES:
patent: 1994169 (1935-03-01), Comins
patent: 2210088 (1940-08-01), Longfield
patent: 2810592 (1957-10-01), Williams
patent: 2877026 (1959-03-01), Payne et al.
patent: 3694008 (1972-09-01), Slator et al.
patent: 3746372 (1973-07-01), Hynes et al.

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