Temperature is closely related to the operating state of mechanical equipment.
1. On the one hand, common failure forms such as abnormal damage of mechanical parts and blockage of pipes will cause the temperature of corresponding parts to rise. Therefore, overflow is a characteristic parameter of mechanical failure.
2. On the other hand, the performance of mechanical parts is closely related to temperature. If the temperature is too high, the performance of parts will be reduced, and even parts will be burned.
Therefore, temperature is also an important factor causing mechanical equipment failure.
Therefore, temperature monitoring plays an important role in fault diagnosis of mechanical equipment.
The so-called temperature monitoring refers to the use of various temperature measuring instruments to measure the temperature rise of the mechanical device, and compare it with the temperature of the mechanical device during normal operation, so as to diagnose the faulty parts and fault degree.
In the fault diagnosis and monitoring of mechanical equipment, temperature measurement methods can be divided into contact temperature measurement and non-contact temperature measurement.
1. Contact temperature measurement has the characteristics of fast, correct and convenient, so it has been widely used in various industrial fields. However, it can not meet the temperature measurement requirements of some special occasions, such as temperature monitoring at the junction of high-voltage transmission lines, temperature monitoring of steel-making blast furnaces, etc. For these occasions, non-contact temperature measurement must be adopted.
2. The non-contact temperature measurement method has the advantages of not destroying the temperature field of the measured object and measuring the temperature of moving parts, but it can only measure the surface temperature of the system, not the internal temperature.
