QUICK-ACTING SAFETY DEVICE; ASSEMBLY METHOD OF THAT DEVICE, AND VALVE Russian patent published in 2013 - IPC F16K17/04 F16K17/164 

FIELD: machine building.

SUBSTANCE: quick-acting safety valve includes valve body, upper casing installed on the valve body, diaphragm placed between valve body and upper casing and having the first side receiving the pressure of gas supply system. At least some part of diaphragm is provided with possibility of being displaced inside valve body and inside upper casing and includes external sealing ring, external flat section, the first rounded projection, middle flat section, the second rounded projection and internal flat section. The first and the second rounded projections are concentric. The first and the second springs are placed into inner volume of upper casing. The first and the second springs apply forces acting on the second side of diaphragm, which is opposite to the side receiving the pressure of gas supply system. Plunger is connected to the first side of diaphragm. Cam is installed so that it can be turned in inner volume of valve body. Cam has the first lever contacting the plunger. Latching mechanism is connected to the first lever. Latching mechanism has the possibility of interacting with gate of quick-acting valve. Plunger movement towards cam or from cam provides the turn of cam and release of latching mechanism. Assembly method of that valve, and quick-acting safety device are described as well.

EFFECT: enhanced operating reliability of safety devices.

18 cl, 8 dwg