GLOBE VALVE Russian patent published in 2009 - IPC F16K5/06 F16K31/02 

FIELD: mechanical engineering.

SUBSTANCE: invention refers to motorised fittings and is intended for insuring explosion-proof and effective combustion of hydrocarbon fuel (gas, black oil), for instance in systems of power boiler units and gas-consuming systems fueling. The globe valve contains body with globe shut element fitted in it, spindle and electric drive with drive shaft. The globe valve contains idler shaft. This shaft is connected with spindle and drive shaft. At the end of idler shaft connected with drive shaft there are two shelves with rectangular cross-section. End shelf has smaller dimensions than medium one. At the end of drive shaft there is shelf with rectangular cross-section. These cross-section dimensions correspond to dimensions of idler shaft end shelf. Also the valve contains cup with cover fitted between body and electric drive. In the centre of the cover there is a hole for drive shaft passing. The cup is connected with body flange. Floating flange, spring, clutch for coupling with through hole and plate are located inside the cup. Floating flange is put on medium shelf of idler shaft with possibility to move within the cup. The spring is attached to body flange by one of its ends. The other end of the spring is attached to floating flange. Coupling clutch is coaxial to idler shaft and adjoins the floating flange. Cross-section of coupling clutch through hole from the side of floating flange has circumferential shape and from the other side it has rectangular shape. Hole circumference diametre exceeds size of medium shelf of idler shaft. Hole rectangular shape corresponds by its dimensions to end shelf of idler shaft and drive shaft shelf. The plate is located between floating flange and cup cover and is perpendicular to floating flange and pinned to cup cover with possibility to fold under action of electromechanical trigger attached to the plate.

EFFECT: providing automatic instantaneous globe valve closing when valve drive is not supplied with electric energy.

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