A Method of Improving the Anti-interference Capability of the Shaft Vibration Measurement System of Rotating Machinery

Abstract

A method for improving the anti-interference ability of a vibration measurement system for a rotating machinery shaft, the method comprising: detecting the vibration measurement system for a shaft vibration of a rotating machinery by using an electrical fast transient burst immunity test, and detecting the anti-interference ability of the vibration measurement system for a shaft vibration of a rotating machinery Parts with poor anti-interference ability; use electromagnetic compatibility principle to shield parts with poor anti-interference ability; use electric fast transient burst immunity test to check whether the anti-interference ability of parts with poor anti-interference ability meets the requirements. This method can accurately, timely and effectively detect the parts with poor anti-interference ability of the vibration measurement system of the rotating machinery shaft, effectively avoid the situation that the main unit of the power grid is automatically protected and tripped due to severe electromagnetic interference, and ensures the normal operation of the main unit of the power grid. It improves the safety and reliability of the power grid, and avoids the huge economic loss caused by the tripping of the main engine due to electromagnetic interference.

Description

technical field [0001] The invention relates to the field of vibration measurement, monitoring and control of a shaft of a rotating machine, in particular to a method for improving the anti-interference ability of a vibration measuring system of a shaft of a rotating machine. Background technique [0002] The working environment of electronic equipment in power plants is relatively harsh, and there are many sources of interference. There are strong electromagnetic fields around various high-voltage, high-current, and high-inductance equipment, which often change and radiate to the electronics on the production line in various ways. equipment, affecting the safe and stable operation of the unit. Among them, the vibration measurement system for rotating mechanical shafts used to monitor whether the vibration displacement of high-speed rotating mechanical shafts such as steam turbines, motors, and feed water pumps will exceed the protection value is often subject to electromagn...

AI Technical Summary

Problems solved by technology

Since the radio frequency interference range of the walkie-talkie is large, and the amplitude of the radio frequency interference signal sent is affected by the distance and the power transmitted at that time, it is difficult to locate the part with weak anti-interference ability on the measurement system, and the repeatability of this detection method is poor. It is also difficult to obtain specific data

In addition, the bandwidth of the interference signal sent by the walkie-talkie is narrow, which cannot cover the bandwidth range of electromagnetic interference received by the electronic equipment of the vibration measurement system of the rotating machinery shaft.

Images