Phase change time difference measuring device of self-deicing unit

The invention discloses a self-deicing unit phase change time difference measuring device which is characterized by comprising a base, a supporting arm and a cross beam, the supporting arm is fixed to the top of the base, the top end of the supporting arm is connected with the cross beam, a data display screen is installed on the front face of the cross beam, a grating micrometer sensor is installed on the top, and the bottom of the sensor is connected with a loading rod with a ball head at one end. The ball head extends into the silica gel mold at the topmost end of the test piece and is immersed by water/ice, the thermocouple is placed into the silica gel mold from the side opening and is immersed by water/ice, and the power panel and the main control panel in the cross beam are connected with the data display screen, the grating micrometer sensor and the thermocouple and then are connected with the computer through a data line. The real-time displacement of the ball head and the real-time temperature in th