An explosion-proof motor rotor stress measuring device and measuring method
An explosion-proof motor and rotor stress technology, which is applied in measuring devices, force/torque/work measuring instruments, and measurement of the change force of optical properties of materials when they are stressed, can solve the problem that the measurement of motor rotor and thermal stress cannot be realized and other issues, to achieve the effect of multi-point stress measurement, good fitability, and electrical isolation
Active Publication Date: 2017-01-04
WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
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However, the method is only suitable for measuring the residual stress of the rotating shaft, and cannot measure the thermal stress of the motor rotor
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[0024] Such as figure 1 and image 3 As shown, the explosion-proof motor rotor stress measurement device of the present invention includes several groups of fiber grating stress sensors 1 with different center frequencies, an optical fiber channel arranged in the explosion-proof motor rotor shaft 3, an optical fiber rotary connector 7 and a fiber grating stress measurement system 9. Several groups of fiber grating stress sensors 1 are respectively arranged on the rotor of the explosion-proof motor. The fiber grating stress sensor 1 includes an outer fiber cladding 15, and inside the fiber cladding 15 is a fiber core 16 and a fiber grating 17. The fiber grating 17 is located in the middle, and both ends of the fiber grating 17 are fiber cores 16. The fiber optic channel includes a radial hole 5 and an axial hole 6 that are set in the rotor shaft 3 of the explosion-proof motor and are connected. The optical fiber rotary connector 7 is set at one end of the rotor shaft 3 of the...
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The invention discloses an explosion-proof motor rotor stress measurement device and method. The explosion-proof motor rotor stress measurement device comprises a plurality of sets of optical fiber raster stress sensors with different central frequencies, an optical fiber channel arranged in a rotor shaft of an explosion-proof motor, an optical fiber rotary connector and an optical fiber raster stress measuring system, wherein the output ends of the optical fiber raster stress sensors are connected with the input end of a transmission optical fiber inside the explosion-proof motor, the output end of the transmission optical fiber inside the explosion-proof motor is connected with a rotor end of the optical fiber rotary connector through the optical fiber channel in the rotor shaft of the motor, and a stator end of the optical fiber rotary connector is connected with the optical fiber raster stress measuring system based on the wavelength division multiplexing principle through a transmission optical fiber outside the explosion-proof motor. The explosion-proof motor rotor stress measurement device and method can realize rotor stress testing of the explosion-proof motor rotor, and accurately and efficiently realize rotor stress measurement of the explosion-proof motor.
Description
technical field [0001] The invention relates to the technical field of explosion-proof motor testing, in particular to an explosion-proof motor rotor stress measuring device and a measuring method. Background technique [0002] The stress test of the explosion-proof motor rotor is of great significance for optimizing the design and improving the reliability of the explosion-proof motor. 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, the stress measurement of explosion-proof motor rotors has always been a difficult problem in the field of explosion-proof motor research. At present, it is very difficult to directly measure the stress of the rotor, and the method of indirect measurement is mainly used for the stress of the rotor of the motor. Firstly, the temperature of the rotor is measured, and then the ...
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IPC IPC(8): G01L1/24G01L5/00
Inventor 郭俊杰吴宣东赵强吴波单圆圆
Owner WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD