High temperature-resistant heat-insulation pressure sensor

The invention discloses a high temperature-resistant and heat-insulation pressure sensor. The pressure sensor comprises a pressure mounting joint, a first sleeve, a second sleeve and a third sleeve which are connected with the pressure mounting joint and are arranged at intervals, a pressure sensor body arranged in the third sleeve, and an electric connector arranged at the end, far away from thepressure mounting joint, of the first sleeve, wherein the pressure sensor body is physically connected with the electric connector, aerogel is filled between the inner surface of the first sleeve andthe outer surface of the second sleeve, and a phase change material is filled between the inner surface of the second sleeve and the outer surface of the third sleeve. In this way, effective heat insulation can be conducted on the external instantaneous high-temperature environment, the performance stability of the pressure sensor is guaranteed, and the cost is low; meanwhile, the high temperature-resistant heat-insulation