PULSE-SAFETY DEVICE Russian patent published in 2006 - IPC F16K17/10 

FIELD: valving.

SUBSTANCE: pulse-safety device comprises the main safety valve. The above-piston space of the valve is in communication with the inlet branch pipe and inlet and discharge branch pipes of the pulse valve. The pulse valve is provided with the spring-loaded slide, indicating piston, and bushing. The device is provided with the adjusting valve. The adjusting valve is connected with the pulse valve and is composed of the slide provided with three branch pipes and controlled by the fluid. One of the branch pipes is connected with the system to be protected. The second branch pipe is connected with the inlet of the pulse valve through the throttle and space between the slide and bushing. The throttle is defined between the outer surface of the indicating piston and inner surface of the bushing. The third branch pipe is connected with the external pressure source. The pulse valve is provided with the electromagnet and stabilizer of the slide position. The pulse valve is adjusted by adjusting valve from the external pressure source without enhancement of the pressure in the system to be protected and without disconnection of the device from the system to be protected.

EFFECT: enhanced reliability.

2 dwg