Differential Pressure Wind Turbine Anomaly Detection System

Abstract

A differential pressure wind turbine anomaly detection system is mainly used to detect whether a wind turbine in industrial equipment has detached or is operating abnormally. Its key feature is that a first sampling point is set in the positive pressure zone generated during wind turbine operation, and a second sampling point is set in the negative pressure zone generated during wind turbine operation. The wind turbine status is determined by detecting the relative pressure difference between these two sampling points. When the wind turbine is operating normally, the relative pressure difference is maintained within a certain range, and an abnormality alarm range is set. Once the wind turbine detaches or operates abnormally, the relative pressure difference will rapidly exceed the abnormality alarm range, and the control unit will issue an alarm or execute contingency measures accordingly. This invention effectively eliminates the influence of external atmospheric pressure or environmental airflow fluctuations on detection accuracy, significantly improving the stability and safety of equipment operation.

Claims

1. A differential pressure wind turbine anomaly detection system, comprising: an industrial device having an internally spaced airflow channel; a wind turbine disposed in the airflow channel for conveying circulating air; a first wind pressure sensing unit disposed in a positive pressure zone generated during wind turbine operation for receiving a first wind pressure; a second wind pressure sensing unit disposed in a negative pressure zone generated during wind turbine operation for receiving a second wind pressure; a differential pressure sensing device connected to the first and second wind pressure sensing units for receiving a slight differential pressure between the first and second wind pressures; and a control unit electrically connected to the differential pressure sensing device for receiving a slight differential pressure signal and comparing the slight differential pressure signal with a preset threshold range; if the slight differential pressure signal is less than or greater than the preset threshold range, the system determines that the wind turbine has malfunctioned and issues an alarm signal.

2. The differential pressure wind turbine anomaly detection system as described in claim 1, wherein the industrial equipment further includes an atmospheric pressure sensing unit for detecting an atmospheric pressure; the control unit further compares the atmospheric pressure, the first wind pressure, and the second wind pressure to calculate the preset threshold range.

3. The differential pressure wind turbine anomaly detection system as described in claim 1, wherein an acoustic fingerprint acquisition device is further provided next to the wind turbine of the industrial equipment; if the differential pressure signal is less than or greater than the preset threshold range, the control unit notifies the acoustic fingerprint acquisition device to acquire a wind turbine operating acoustic fingerprint.

4. The differential pressure wind turbine anomaly detection system as described in claim 3, wherein the control unit further compares the wind turbine operating sound with the differential pressure signal, and if the anomaly level is determined to be greater than a second threshold, a signal is sent to an alarm device.

5. The differential pressure wind turbine anomaly detection system as described in claim 1, wherein the first wind pressure sensing unit and the second wind pressure sensing unit include an L-shaped probe and a metal tube.

6. The differential pressure wind turbine anomaly detection system as described in claim 5, wherein the length of the long side of the L-shaped probe is between 40 and 60% of the height of the air supply channel next to the wind turbine, and the length of the short side is between 50 mm and 70 mm.

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