SAFETY LOCKING DEVICE Russian patent published in 2010 - IPC F16K17/06 G05D16/06 F16J15/24 

FIELD: machine building, gas distribution.

SUBSTANCE: invention refers to safety-locking devices and is designed for implementation at objects corresponding to reservoirs with filling hatch for storage and transporting dangerous gas mediums, and also to process tanks used for fabrication of items in them. The safety locking device consists of a case with a spring-loaded rod installed therein for locking a gate of the reservoir hatch; the device also consists of a diaphragm mechanism in form of two plates creating closed volume, wherein between there is secured an elastic diaphragm. The diaphragm divides closed volume into two cavities. A stop fixing the rod at locking the reservoir hatch is fastened on the diaphragm. One of cavities of the diaphragm mechanism can be connected with internal volume of the reservoir, while another one can be connected with atmosphere. The device is equipped with a back valve furnished with a follower and a pneumatic cylinder with a piston. A rod is secured on the piston of the pneumatic cylinder. The back valve is connected to the cavity of the pneumatic cylinder and can be connected with the system of air supply and with a blown up sealing. The latter is designed for sealing the joint of the lock with the reservoir. The follower of the back valve interacts with a guide block. The guide block is fastened to the gate of the hatch.

EFFECT: increased reliability of device operation.

2 dwg