Device and method for measuring heat leakage of vacuum insulation cryogenic container

The invention discloses a device and a method for measuring heat leakage of a vacuum insulation cryogenic container, and relates to the technical field of low-temperature equipment testing, the method for measuring the heat leakage of the vacuum insulation cryogenic container is based on the measuring device, and the measuring device comprises a connecting pipeline, a flow adjusting unit, a pressure measuring unit and a control unit; the measuring method comprises the following steps that a connecting pipeline is controlled to exhaust gas at a preset flow rate, a pressure stable change parameter of an inner cavity of the vacuum insulation cryogenic container is determined, the preset flow rate is a first flow rate, the pressure stable change parameter is a first pressure stable change parameter, and the preset flow rate is a second flow rate; the pressure stable change parameter is a second pressure stable change parameter; and according to the first flow, the second flow, the first pressure stable change par