Control valve, particularly for pulsating rocket engines

Details Control valve, particularly for pulsating rocket engines Control valve, particularly for pulsating rocket engines

1973-10-15

1978-11-07

Myhre, Charles J.

Valves and valve actuation

Reciprocating valve

Particular head and seat cooperation

251359, 251368, F16K 100

Patent

active

041241959

ABSTRACT:
A control valve for a pulsating rocket engine comprises a valve seat and a movable valve part, one of which has a facing surface, of a non-deformable material, having a plurality of concentrically arranged saw-tooth shaped sealing ridges with flat sealing faces at their apices which extend perpendicular to the movement direction or force application direction. The other valve part has a facing surface of polytetrafluorethylene or polyamide which is initially smooth and plain but which, upon the first closing operation of the valve, responsive to a pressure load thereon exceeding a predetermined pressure load, is irreversibly deformed by the saw-tooth shaped sealing ridges, with flat sealing faces, of the other valve part to form therein grooves complementary to the sealing ridges. The included angle between the striking and sealing flanks of the ridges has a value such that, upon subsequent closing operations of the valve, the synthetic resin material, which has not been irreversibly deformed, can flow into the spaces between the annular sealing ridges without exceeding its irreversible deformation yield point, to form an elastic buffer.

REFERENCES:
patent: 341345 (1886-05-01), Pickering
patent: 1234096 (1917-07-01), Farrell
patent: 3022978 (1962-02-01), Kowalski
patent: 3145733 (1964-08-01), Shaw et al.
patent: 3168282 (1965-02-01), Latshaw et al.
patent: 3253300 (1966-05-01), Gove et al.
patent: 3698427 (1972-10-01), Baranowski

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