Equipment Inspection Using a Far Infrared Thermometer
1 Limitations of traditional temperature measurement
After the electrical equipment is supplied with current, the temperature of the equipment will change, and its calorific value is proportional to the square of the supplied current; the temperature change of the bearings of rotating electrical equipment and mechanical equipment is closely related to the cooling medium, sliding friction and rolling friction... Equipment Any type of failure is mostly manifested in the form of temperature changes. By detecting the temperature change of the equipment, judging and discovering whether the equipment is abnormal and malfunctioning in time is of great significance to improving the reliability of equipment operation, prolonging the service life of equipment, and avoiding equipment damage and personal injury. As we all know, the traditional method of measuring the temperature of equipment inspections is to use mercury thermometers and alcohol (kerosene) thermometers. Mercury thermometers are greatly disturbed by electromagnetic fields, and alcohol (kerosene) thermometers have very large errors when measuring equipment with high temperatures. Therefore, the new equipment temperature measurement tool - far infrared thermometer has been widely used.
2 Application status of new technology of far infrared temperature measurement
Far-infrared temperature measurement technology is a new type of non-contact testing technology introduced from European and American countries in recent years, and it has been widely used in the power industry. Far-infrared temperature measurement technology is mainly used in power plants and substations to measure the temperature of electrical equipment, that is, to measure the heating and overload of electrical equipment caused by current, the fault overheating of the isolating switch and the breaker and the metal connection part, and the overheating fault of the cable head etc. However, it is rarely used to measure the bearing temperature of rotating equipment, whether the sealed container is leaking, detect the steam separator, find the insulation fault in the process pipeline or other insulation process, etc. In my work, I have encountered several cases where the equipment faults found by measuring the temperature of the non-flowing part of the equipment are typical and representative.
