Liquid rocket engine short type thermocouple steady state calibration device

The invention relates to a liquid rocket engine short type thermocouple steady state calibration device including a pipeline unit and a test unit, the pipeline unit includes a test section, the test section includes an inner cylinder, an outer cylinder, and an insulating material between the inner cylinder and the outer cylinder, the test unit includes a host computer, a temperature control system, a collection device, a total temperature sensor and a total pressure sensor arranged in the stable section, and a reference temperature sensor arranged in the test section, the temperature control system includes at least two sets of wall temperature sensor units, a temperature controller and at least one group of heating bodies, the heating bodies are arranged on the outer wall of the inner cylinder, the collection device feeds back the temperature information of the wall temperature sensor units to the temperature controller, the temperature controller adjusts the power of the different heating bodies to control