Online monitoring method and monitoring system for vibration of fan

A technology of fan and vibration intensity, applied in the field of detection, can solve problems such as fan failure, passenger discomfort, and large fan vibration, and achieve the effect of improving service life and avoiding passenger discomfort.

Inactive Publication Date: 2019-02-05
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology

[0003] Relevant literature shows that after the rail transit equipment fan has been working for a period of time, due to the accumulation of dust inside the cabinet and the wear of the bearing, the fan will vibrate greatly
Excessive vibration of the fan will affect the normal operation of the fan, and even cause fan failure and shorten the life of the fan
For the converters and ventilation devices of subways and high-speed trains, the vibration of the fan inside the equipment will also be transmitted to the car body through the lifting lugs of the converter cabinet, which will cause discomfort to passengers and may cause greater noise inside the car
At present, there is no effective monitoring of wind turbines in the rail transit field in the prior art

Method used

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  • Online monitoring method and monitoring system for vibration of fan
  • Online monitoring method and monitoring system for vibration of fan

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown, this embodiment provides an online monitoring method for fan vibration. The method performs time-domain analysis and frequency-domain analysis on the vibration acceleration time-domain data respectively; through time-domain analysis, it is judged whether the fan vibration intensity is too large; through frequency-domain analysis, it is judged The cause of the failure of the excessive vibration intensity of the fan. In this way, the vibration of the fan can be monitored in real time and the abnormal vibration when the vibration intensity of the fan is too large can be found in time, and the fault cause of the excessive vibration intensity of the fan can be dealt with in a timely manner, which improves the service life of the fan and at the same time avoids The discomfort of passengers caused by the excessive vibration intensity of the ...

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Abstract

The invention provides an online monitoring method and a monitoring system for a vibration of a fan. By performing time domain and frequency domain analyzing on vibration acceleration time domain datacollected by an acceleration sensor, the vibration intensity of the fan can be monitored in real time, and the fault reason that the vibration intensity of the fan is excessive is analyzed when the vibration intensity of the fan is excessive. Therefore, the vibration abnormality caused by excessive vibration intensity of the fan can be found timely, targeted treatment can be performed according to the fault cause of excessive fan vibration intensity, the service life of the fan is prolonged, and passenger discomfort and large noise in a compartment caused by excessive fan vibration intensitycan be avoided.

Description

technical field [0001] The invention belongs to the detection field, and in particular relates to an on-line monitoring method and a monitoring system for fan vibration. Background technique [0002] Rail transit equipment fan is an important device to provide cooling and heat dissipation for rail transit vehicles and equipment, supply fresh air and discharge exhaust gas inside the vehicle. A heat exchange fan and a chopper fan are installed inside the locomotive traction converter, which are respectively used for heat dissipation of the heat exchange module and the chopper resistor; The heat dissipation of the module fins; the fan is installed inside the ventilating device of the EMU to supply fresh air to the car and discharge exhaust gas. [0003] Relevant literature shows that after the rail transit equipment fan has been working for a period of time, due to the accumulation of dust inside the cabinet and the wear of the bearing, the fan will vibrate greatly. Excessive...

Claims

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Application Information

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IPC IPC(8): G01M13/00G01M13/045
CPCG01H17/00G01M13/00G01M13/028
Inventor 臧晓斌王永胜丁杰曾亚平夏亮李振鹏武宗祥何艳飞
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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