Low-temperature safety valve test device

The utility model relates to a low-temperature safety valve test device which comprises a test container, a temperature control layer and a heat preservation layer, and the test container is used forcontaining a test medium. The test container is provided with a test medium inlet and a sample connector, the test medium inlet is used for inputting a test medium into the test container, the sampleconnector is communicated with the interior of the test container, and the sample connector is used for being connected with a tested safety valve. Wherein the temperature control layer is sleeved outside the test container, the heat preservation layer is sleeved outside the temperature control layer, and the heat preservation layer is used for heat insulation of the temperature control layer. A temperature control cavity is formed between the temperature control layer and the test container, the temperature control cavity is used for containing a temperature control medium, and the temperature control medium is used f