Vibration measurement device based on series connection of three speed-measuring coils
A speed-measuring coil and vibration-measuring technology, applied in measuring devices, using electrical devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve the problems of low sealing reliability, difficult installation, large errors, etc., and achieve improved measurement accuracy and good detection effect, the effect of easy installation
Active Publication Date: 2014-09-24
中国原子能工业有限公司
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Problems solved by technology
[0002] At present, the detection methods of vibration parameters of rotating mechanical equipment include eddy current vibration measurement, laser vibration measurement and speed coil vibration measurement. The former two have high precision but are only suitable for the stand-alone test stage. Due to their high cost, difficult installation and low sealing reliability and other factors cannot be applied to large-scale experiments and industrial production
Existing speed measuring coils are based on a single speed measuring coil for vibration measurement, with low measurement accuracy and large errors, which cannot meet industrial applications
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[0021] Such as figure 1 , 4 As shown, a vibration measuring device based on three speed measuring coils in series, including a cylindrical shell 1, a support frame 2 and a rotor 4 located in the shell 1; wherein, the support frame 2 is a cylinder, and the front end surface of the cylinder is Above, a stepped through hole 3 is opened along the axial direction, and the rotor 4 is arranged in the stepped through hole 3 , and the outer peripheral surface of the support frame 2 is closely matched with the inner peripheral surface of the casing 1 .
[0022] Such as figure 1 , 2 As shown, a bearing 5 is arranged between the front end face of the casing 1 and the front end face of the rotor 4, and a ring magnet 6 is arranged around the bearing 5 on the end face inside the casing 1, and a ring magnet 6 is arranged around the bearing 5 on the front end face of the rotor 4. There is a magnet guide 7, the magnet guide 7 is a hexagon with a circular hole in the center, and an angle of t...
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The invention provides a vibration measurement device based on the series connection of three speed-measuring coils. The vibration measurement device comprises a shell, a supporting frame and a rotor, wherein the supporting frame is a cylinder; a stepped through hole is formed in the front end face of the cylinder; the rotor is arranged in the stepped through hole; an annular magnet and a magnetic conductor are respectively arranged on the front end faces of the shell and the rotor; a speed-measuring coil I, a speed-measuring coil II and a speed-measuring coil III are sequentially arranged around the stepped through hole inside the supporting frame; the speed-measuring coil I is the same as the speed-measuring coil III; and the winding direction of an induction coil of the speed-measuring coil II is opposite to the winding directions of induction coils of the speed-measuring coil I and the speed-measuring coil III. According to the vibration measurement device based on the series connection of the three speed-measuring coils, the measurement accuracy of amplitude detection of rotary mechanical equipment can be improved, and a good detection effect on axial multi-direction vibration information in the operating process of the rotor can be achieved. The device is low in cost and feasible in industrial application, the speed-measuring coils are convenient to install, and the operation and sealing performance of equipment are not affected.
Description
technical field [0001] The invention belongs to a vibration measuring device for vibration parameters of rotating mechanical equipment, in particular to a vibration measuring device based on three speed measuring coils connected in series. Background technique [0002] At present, the detection methods of vibration parameters of rotating mechanical equipment include eddy current vibration measurement, laser vibration measurement and speed coil vibration measurement. The former two have high precision but are only suitable for the stand-alone test stage. Due to their high cost, difficult installation and low sealing reliability Such factors cannot be applied to large-scale experiments and industrial production. Existing speed measuring coils are based on a single speed measuring coil for vibration measurement, with low measurement accuracy and large errors, which cannot meet industrial applications. Contents of the invention [0003] In order to solve the above technical p...
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IPC IPC(8): G01H11/02
Inventor 陈立刚戴思丹刘鸿烨王慧婷兰鹏
Owner 中国原子能工业有限公司