FIELD: mechanical engineering.
SUBSTANCE: proposed device that can be used in liquid-cooled machines and mechanisms equipped with expansion devices to build up excess pressure is made in the form of tank 1 accommodating piston 2 that mounts detachable weights 4 and sealing rings 3. Piston 2 has barrel 7 whose top part protrudes from tank and is sealed by means of rubber rings 8 disposed in top part of tank; bottom part of piston has holes 12 providing communication between space filled with insulating liquid under piston bottom and annular space between cylindrical surfaces of piston and tank.
EFFECT: enhanced operating reliability of device.
1 cl, 1 dwg
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