A kind of explosion-proof motor rotor temperature measuring device and method
An explosion-proof motor and rotor temperature technology, applied in the direction of measuring devices, thermometers, measuring heat, etc., can solve the problems of narrow space, small air gap, and low measurement accuracy, so as to avoid the influence of strong electromagnetic interference and not damage the explosion-proof performance. To achieve the effect of electrical isolation
Active Publication Date: 2017-05-24
WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
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Problems solved by technology
Although semiconductor absorption optical fiber temperature measurement is not affected by electromagnetic interference, it is affected by many factors such as the coupling conditions with the optical fiber, the temperature characteristics of the light-emitting tube and the receiving tube, and the preparation process of semiconductor materials. Motor rotor temperature test requirements
In addition, in actual use, because GaAs is covered with a protective material, its response speed is slow, and it is not suitable for measuring the temperature of the motor rotor under working conditions.
[0007] Because explosion-proof motors have various characteristics such as strong electromagnetic interference, small air gap, narrow space, and rotor rotation, and require isolation of internal and external electrical signals, traditional methods such as thermistor temperature measurement and infrared temperature measurement cannot meet their measurement needs. , the internal temperature measurement of explosion-proof motors, especially the rotor temperature measurement of explosion-proof motors, has always been a difficult problem in the field of explosion-proof motor research.
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[0026] The invention proposes a fiber grating explosion-proof motor rotor temperature measurement method based on the principle of wavelength division multiplexing. Such as figure 1 , 2 As shown, the motor includes a motor rotor shaft, the front end and the rear end of the motor rotor shaft are connected with the motor housing and are respectively provided with a motor front end bearing 14 and a motor rear end bearing 12, and the middle position of the motor is provided with a motor stator 13 and is located at the motor stator. 13 The motor rotor in the middle.
[0027] The measuring device used in the method of measuring the rotor temperature of an explosion-proof motor includes: several optical fiber grating temperature sensors, the transmission optical fiber 4 inside the motor, the radial small hole 5 and the axial small hole 6 opened in the motor rotor shaft, connected to the motor rotor shaft end The optical fiber rotary connector 7, the external transmission optical fi...
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Abstract
An explosion-proof motor rotor temperature measuring device, used to measure the temperature of the motor rotor, the motor rotor shaft is the motor rotor shaft, including several fiber grating temperature sensors with different center frequencies, the internal transmission optical fiber of the motor, and the optical fiber installed in the motor rotor shaft channel, optical fiber rotary connector, external transmission optical fiber of the motor, fiber grating temperature measurement system, the invention proposes an explosion-proof motor rotor temperature measurement device and method, adopts spectrum measurement, and all the inside of the explosion-proof motor is optical signal, which avoids the internal explosion-proof motor in principle. Influenced by strong electromagnetic interference, the measurement accuracy is high.
Description
technical field [0001] The invention relates to an explosion-proof motor, which belongs to the technical field of explosion-proof motor testing, and can be widely used in the temperature measurement of the explosion-proof motor rotor, the temperature field test of the explosion-proof motor, the temperature monitoring and fault diagnosis of the explosion-proof motor. Background technique [0002] When the explosion-proof motor is working, the internal temperature will rise, which will accelerate the aging of its insulating material, reduce its efficiency, and seriously cause motor failure. Temperature is one of the important parameters of explosion-proof motors, and its temperature needs to be measured in multiple links such as design, research, testing and operation of explosion-proof motors. Temperature measurement of explosion-proof motor is of great significance to optimize design and improve performance. The temperature measurement of explosion-proof motor rotor is the ...
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IPC IPC(8): G01K11/32G01K11/3206
Inventor 郭俊杰吴宣东吴波赵强单圆圆
Owner WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD