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Detection device and detection method for shaft vibration sensor

A detection device and detection method technology, applied in measurement devices, electrical devices, instruments, etc., can solve the problems of online monitoring of safety status, inaccurate sensor measurement, etc., to achieve reliable inspection results, improve verification capabilities, and reduce interference. Effect

Active Publication Date: 2015-12-09
STATE GRID CORP OF CHINA +1
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Problems solved by technology

However, in many cases, the sensor measurement is inaccurate due to the failure of the sensor, the front-end device, or the short circuit of the connecting wire, virtual connection, strong electromagnetic interference, etc. extremely serious impact

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  • Detection device and detection method for shaft vibration sensor

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Embodiment Construction

[0022] The implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0023] Due to the special measurement principle of the eddy current axial vibration sensor, it can only sense the vibration amplitude of the metal object within a millimeter range, and the frequency of this vibration should not be too low, otherwise the sensor cannot accurately measure the vibration amplitude of the object. Therefore, the simple method of manually shaking the sensor cannot be used to test the signal at the work site of the vibration monitoring test. Therefore, the present invention chooses to use the method of simulating the real rotor rotation to realize the real vibration situation, so that the accuracy of the test signal of the shaft vibration sensor can be verified by the change of the actua...

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Abstract

The invention relates to a detection device and a detection method for a shaft vibration sensor. The device comprises a metal bottom board, wherein the metal bottom board is equipped with a motor, a corresponding side of the motor is equipped with a bearing, one end of a long shaft is equipped with a motor shaft, the other end of the long shaft penetrates through the bearing, the long shaft is fixed with and penetrated by three shaft vibration sensor test discs with equal intervals, one side of the metal bottom board is provided with a mounting hole groove, the mounting hole groove is fixed with a right-angle side of an angle steel bracket, and another right-angle side of the angle steel bracket is provided with a shaft vibration sensor mounting hole. The detection method comprises steps that, the sensor is aligned; the sensor is connected and starts; the three test discs are used for measurement; the measurement data is respectively contrasted with equivalent peak-peak vibration amplitudes of the three test discs to determine the state of the sensor. The method is the most direct and real method, introduces the minimum interference and has the most reliable detection effect, and capability of verification on the sensor is improved.

Description

technical field [0001] The invention belongs to the technical field of sensor signal inspection, in particular to a detection device and a detection method of a shaft vibration sensor. Background technique [0002] The shaft vibration sensor is a measuring element used to measure the amplitude value of the rotating mechanical shaft. The shaft amplitude value refers to the vibration amplitude of the rotating shaft of the rotating machine relative to the bearing, which is a kind of relative vibration. It is an important monitoring data for rotating machinery, especially large rotating equipment such as steam turbines and generators, or auxiliary equipment such as fans and pumps. Diagnosis and management have very important guiding significance. This sensor has a wide range of applications in thermal power plants, chemical plants and other industrial fields. [0003] At present, the shaft vibration sensor commonly used in the power industry is a non-contact eddy current sens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/00
Inventor 屈斌张宁张宇甘智勇张利王建
Owner STATE GRID CORP OF CHINA
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