SYSTEM FOR MAINTAINING CONSTANT PRESSURE IN RESERVOIR Russian patent published in 2011 - IPC F16K17/02 G05D16/10 

FIELD: machine building.

SUBSTANCE: system for maintaining constant pressure in reservoir consists of safety valve, of pump unit for filling reservoir with working medium, and of device of pneumatic setup of constant pressure in reservoir. The safety valve consists of a cylinder case. The case is assembled on a neck of the reservoir. Inside the case there is positioned an outlet valve with a shank end. The outlet valve is loaded with a tightening device. The device for pressure pneumatic setup is connected to the reservoir and to an above-the piston cavity by means of manipulators. The cavity is formed with the case of the safety valve and shank end of an inlet valve. The shank end corresponds to a piston and it seals the cavity. The system is equipped with a device unloading the outlet valve of its weight. The safety and the outlet valves are partially located in a chamber. The latter is assembled on the reservoir.

EFFECT: extended range of values of setup pressure in reservoir without additional adjustment of outlet valve operation; raised quality of maintaining constant pressure.

5 cl, 1 dwg