DUSE A TELECOMMANDE POUR VANNE

• Main Author: JOHN PAUL SOLAND ET CHARLES DANIEL BRIDGES
• Format: Patent
• Language: French
• Published: 30.12.1983
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

L'INVENTION CONCERNE UNE DUSE 10 COMPORTANT UNE BUTEE REGLABLE 222, 228 POUR LIMITER SON DEGRE D'OUVERTURE DE FACON ABSOLUE ET UN PISTON ACTIONNE PAR UN FLUIDE PRESSURISE 140 QUI EST RELIE A LA TIGE 56 DE LA VANNE SUR LAQUELLE AGIT NORMALEMENT UNE PRESSION DIFFERENTIELLE DE FACON A MAINTENIR LA VANNE OUVERTE JUSQU'AU DEGRE DE PLEINE OUVERTURE PERMIS PAR CONTACT DE LA TIGE AVEC LA BUTEE. UN DISPOSITIF D'ASSISTANCE MECANIQUE 182, 208 A TENDANCE A FERMER LA VANNE ET CE DISPOSITIF PEUT COMPORTER UN INDICATEUR VISUEL 210, 216 GRACE AUQUEL ON PEUT CONNAITRE LE DEGRE D'OUVERTURE DE LA VANNE. DES DISPOSITIFS MECANIQUES ACTIONNABLES A DISTANCE ET SUR PLACE 232, 234 PERMETTENT LE REGLAGE DE LA BUTEE. There is provided a choke having an adjustable stop for absolutely limiting its degree of openness and a pressurized fluid-operated piston connected to the valve stem which normally is acted-on by differential pressure to maintain the valve open to the full extent permitted by engagement of the stem with the stop. A mechanical assistance device is provided for tending to close the valve and this device may be provided with a visual indicator from which, by inspection, one may tell the degree of openness of the valve. Remotely operable and on-site mechanical devices are shown provided for adjusting the absolute stop.