A detection device and detection method for a shaft vibration sensor

A detection device and detection method technology, which is applied in the direction of measuring devices, electrical devices, instruments, etc., can solve the problems of inaccurate sensor measurement and the impact of online monitoring of safety status, and achieve improved verification capabilities, reliable inspection results, and low interference. Effect

Active Publication Date: 2018-03-06
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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  • A detection device and detection method for a 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 of a shaft vibration sensor. The device includes a metal base plate, a motor is installed on the metal base plate, a bearing is installed on the corresponding side of the motor, one end of the long axis is installed with the motor shaft, and the other end is worn on the bearing. Three shaft vibration sensor test disks are mounted on the long axis at an even distance, and a mounting hole is made on one side of the metal base plate. One right-angled side of the angle steel bracket is fixed on the installation hole slot, and the other right-angled side of the angle steel bracket is fixed. Shaft vibration sensor mounting holes are made. The method includes: installing the sensor; aligning the sensor; connecting and opening the sensor; measuring three test discs; comparing the measured data with the equivalent peak-to-peak vibration amplitudes of the three test discs to judge the state of the sensor. The method of the invention is the most direct, the most authentic, the introduced interference is the least, and the inspection effect is the most reliable. Improved authentication capabilities for sensors.

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 Patents(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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