CRYOGENIC INSTALLATION-GASIFIER AND METHOD OF OPERATION THEREOF Russian patent published in 2020 - IPC F17C9/02 F25B39/02 

FIELD: chemistry.

SUBSTANCE: invention relates to cryogenic engineering and can be used for gasification of liquid nitrogen when inspecting quality of optical solar reflectors gluing onto outer surfaces of spacecraft. Operation method of cryogenic installation-gasifier includes maintenance of pressure and temperature of cold gas in heat-insulated cryogenic tank above temperature of condensation by supply of heat to cold gas at reduction of its density. Cryogenic tank of the installation-gasificator is filled through the filler neck in the form of a funnel with liquid nitrogen, but not more than half of the total volume of the cryogenic reservoir. According to the temperature and pressure sensors located in the upper part of the cryogenic tank, the degree of liquid nitrogen gasification inside the cryogenic tank is determined. At temperature increase and cold gas pressure drop inside cryogenic tank there is intensive evaporation of liquid nitrogen in evaporator by means of programmable microcontroller of electric heater arranged on evaporator. By means of heating in the evaporator the cold gas is formed and enlarged in the volume and it is delivered via the pipeline into the cryogenic reservoir, excessive pressure is created in it, thus ensuring the required intensity of the cold gas supply. When the required parameters of temperature and pressure in the cryogenic reservoir are achieved using a programmable microcontroller, the temperature of the electric heater of the evaporator is reduced and the intensity of gasification specified in the microcontroller program is maintained. Disconnection of the plant is carried out automatically by a programmable microcontroller with reduction of the level of liquid nitrogen in the cryogenic tank, reduction of pressure and increase in the temperature of the cold gas in the cryogenic container as per readings of the temperature and pressure sensors, wherein electric heater of evaporator operates at maximum temperature. On the control panel of the programmable microcontroller there are buttons for switching on the plant and On and No nitrogen status indicators.

EFFECT: technical result is higher mobility, pre-readiness and stability degree and simplified operation.

2 cl, 4 dwg