Method for judging and treating signal failure of generator set vibration sensor

A vibration sensor and processing method technology, which is applied in the field of judging and processing the signal fault of the vibration sensor of the generator set, can solve the problems such as the detection of unstable vibration data, the influence of the normal development of vibration monitoring, the movement of the sensor, etc. The effect of shortening troubleshooting time and improving reliability

Inactive Publication Date: 2015-04-29
STATE GRID CORP OF CHINA +1
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Problems solved by technology

In actual work, due to the harsh environmental conditions of the production site and the development of various maintenance and construction work, the damage of the wire, the grounding of the conversion head, the movement of the sensor and other faults often cause signal distortion, which has a great impact on the normal development of vibration monitoring.
However, due to the variability and instability of vibration data, some signals are not easy to be found even if there is a fault.

Method used

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  • Method for judging and treating signal failure of generator set vibration sensor

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Embodiment Construction

[0037] The implementation of the present invention will be described in further detail below. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0038] A method for judging and processing the signal failure of the vibration sensor of a generator set, which mainly relies on the analysis of the amplitude of the generator set in different states, such as figure 1 As shown, including the method steps as follows:

[0039] (1) First judge whether the signal is abnormal by the vibration amplitude, which needs to be treated separately in two cases:

[0040] ① In the state of shutdown or cranking; the speed of the unit is 0 when the unit is stopped, and the speed of cranking is generally between 3rpm-5rpm. In these two states, the vibration of the bearing is very small, and the measured vibration amplitude is about 2μm: the specific judgment method for:

[0041] A. If the measured result is below 1 μm, the s...

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Abstract

The invention relates to a method for judging and treating a signal failure of a generator set vibration sensor. The method comprises the steps that 1, whether a signal is abnormal or not is judged through a vibration amplitude, and the signal is processed in two conditions, namely, the shutdown or turning state and the acceleration and deceleration process or the running process of 3,000 rpm; 2, after it is judged that the vibration signal has a failure, a failure reason is obtained according to the characteristic of the failure, treatment and checking are carried out on the failure according to the failure reason, and the failure is processed in two conditions, namely, the shutdown or turning state and the acceleration and deceleration process or the running process of 3,000 rpm. The method is clear in thought, easy and convenient to operate and high in practicality, failure treatment time is shortened, reliability of vibration monitoring work is improved, the vibration failure diagnosis and treatment capacity is enhanced, and the safety guarantee of unit running is improved.

Description

technical field [0001] The invention belongs to the technical field of signal fault inspection of a vibration monitoring system of a rotating machine, in particular to a method for judging and processing a signal fault of a vibration sensor of a generating set. Background technique [0002] When vibration faults occur in rotating equipment such as turbogenerators, fans, and water pumps, it is necessary to carry out fault diagnosis and analysis. These rotating equipment also need to start and stop Bode diagram surveying and mapping as important technical archives after they have just been put into production or have undergone major repairs. All these work All must be realized with the help of a temporary rotating machinery vibration fault diagnosis and analysis system. The vibration diagnosis subsystem consists of a data acquisition analyzer and several sensors. The most commonly used sensor is the speed vibration sensor, which relies on a strong magnetic base to be firmly a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/00G01R31/34
Inventor 屈斌张利王建张宇张宁甘智勇
Owner STATE GRID CORP OF CHINA
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