DEVICE TO SUPPLY COOLANT INTO COLD CHAMBER Russian patent published in 2016 - IPC F17C9/02 F25D3/10 

FIELD: cryogenics.

SUBSTANCE: invention relates to cryogenic engineering, in particular to devices for pumping, filling liquid nitrogen, as well as for freezing of vacuum traps. Device to supply coolant into the cold chamber contains a funnel made integral with a flange and a sealing plug with a vertical through hole located between the neck of a Dewar vessel and a seat in the flange. Tube of the funnel located in the vertical hole of the plug is 5 mm longer than the height of the plug, the upper cylindrical part of the funnel is tightly connected with the lower threaded part of a thin-wall thermo-coupling tube, the upper part of which is equipped with a shaped flange with internal thread, the lower part of which is tightly connected to the upper threaded part of the feeder, while the upper threaded part of the shaped flange is connected with the lower thread part of the outlet union, the upper threaded part of which is intended for connection to the cold chamber pipeline. Upper threaded part of the feeder is provided with a vertical cylindrical cavity, in which there is a metal ball, which is a ball valve. On the outer part the funnel is equipped with a tap made integral with the funnel, the inner threaded part of the tap is tightly connected with a safety valve, the device also includes two hooks located on handles of the Dewar vessel provided with thumbscrews connected by a thread joint with two rods made in the form of bars, the upper part of which is made integral with forks of articulated joints with the flange of the funnel, which is made with mating parts of these joints located on the opposite sides.

EFFECT: technical result of the invention is creation of a device to supply coolant into the cold chamber with reliable sealing of the Dewar vessel neck and the possibility to connect the cold chamber pipeline with at least one more device with a Dewar vessel for their subsequent use.

1 cl, 4 dwg