Unit rotor magnetic pole connecting line temperature measuring device

Abstract

The invention is applied to the technical field of generator units, and provides a unit rotor magnetic pole connecting line temperature measuring device. The unit rotor magnetic pole connecting line temperature measuring device comprises a generator unit; the generator unit includes a rotor magnetic pole, and the rotor magnetic pole is rotatably connected to a support frame through a rotating shaft; and the unit rotor magnetic pole connecting line temperature measuring device also includes an SAW sensor embedded inside an equipment bolt at the rotor magnetic pole connecting line and a temperature reader fixedly connected to the support frame. The SAW sensor is embedded inside the equipment bolt at the rotor magnetic pole connecting line and matches the temperature reader of radar transmission; the wireless transmission setting eliminates the noise interference caused by long cable transmission; the temperature signal propagates in the form of electromagnetic waves externally; the temperature signal propagates as a surface acoustic wave inside the SAW sensor; and only a millisecond class time is required to complete a round of temperature measurement process from the sending of a scan signal by the temperature reader to temperature signal return and analysis; therefore, the entire measurement system has an extremely high measurement accuracy.

Description

technical field [0001] The invention belongs to the technical field of generating sets, and in particular relates to a temperature measuring device for connecting wires of magnetic poles of a generating set rotor. Background technique [0002] During the process of power generation and pumping, the magnetic pole connection point of the generator motor rotor of the pumped storage power station will cause loose contact due to vibration or heat generation due to the small contact surface. Because the production process is in a closed environment and the maintenance cycle is long, this will affect the safety of production. If a similar situation cannot be discovered in time, it will easily cause safety accidents such as short circuit, fire, equipment outage, and even casualties, resulting in huge direct or indirect economic losses. [0003] However, due to the relatively closed space of the magnetic poles of the rotor inside the pumped-storage generator motor, and the magnetic p...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a temperature measuring device for the connecting wire of the rotor magnetic pole of the unit, aiming at solving the temperature measurement of the rotor magnetic pole of the generator set, which has the following requirements for the realization technology: first, wireless transmission is necessary due to the limitation of the rotor rotation; Temperature accuracy and accurate positioning are the best contact measurement; the third is the problem of maintenance-free

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