Monitoring method and control method for motion clearance of vacuum pump rotor and vacuum pump

The invention relates to the technical field of vacuum pumps, in particular to a method for monitoring the motion clearance of a vacuum pump rotor. The first temperature measurement liquid is introduced into the shell of the vacuum pump, the second temperature measurement liquid is introduced into the rotor, the introduction temperature and the outflow temperature of the first temperature measurement liquid are obtained, the introduction temperature and the outflow temperature of the second temperature measurement liquid are obtained, and the temperature change conditions of the first temperature measurement liquid and the second temperature measurement liquid are obtained. Temperature changes of the rotor and the shell in the vacuum pump can be obtained according to temperature changes of the temperature measuring liquid, and then changes of the motion clearance of the vacuum pump rotor are monitored. 本发明涉及真空泵技术领域，具体涉及一种能够监测真空泵转子运动间隙的方法。第一测温液通入真空泵的壳体中，第二测温液通入转子中，通过获取第一测温液的通入温度和流出温度，获取第二测温液的通入温度和流出温度，获知第一测温液和