Detecting abnormalities from temperature surfaces! Improving the accuracy of equipment diagnosis by using thermography diagnostics.
In the diagnosis of rotating machinery, measurements are conducted on the "entire motor," "bearing section," and "pump bearing section." The measurement methods include "vibration diagnosis" and "thermography diagnosis," each of which has its strengths and weaknesses depending on the diagnostic area. "Vibration diagnosis" excels in diagnosing issues such as bearing problems, misalignment, and imbalance, while "thermography diagnosis" detects faults from a temperature perspective, particularly in the stator winding section and terminal section, and is proficient in diagnosing lubrication conditions. By leveraging and complementing the strengths of each technique, we contribute to improving the accuracy of equipment diagnosis. 【Checkpoints】 ■ Entire motor - Frame temperature - Heat generation in the terminal box - Overall temperature distribution ■ Bearing section - Temperature of the bearing section - Temperature distribution of the bearing section ■ Pump bearing section - Temperature of the bearing section of the coupled rotating machinery - Temperature distribution of the bearing section *For more details, please feel free to download the PDF or contact us.
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【Diagnostic Comparison】 <Vibration Diagnosis> ■ Stator winding section: Diagnosis is difficult ■ Bearings: Damage can be detected ■ Terminal section: Diagnosis is difficult ■ Misalignment: Can be detected ■ Unbalance: Can be detected ■ Lubrication condition: It is difficult to determine the excess or deficiency of lubricant <Thermography Diagnosis> ■ Stator winding section: The degree of deterioration can be confirmed by temperature changes in the winding ■ Bearings: Damage may not be detectable; detection takes longer than vibration diagnosis ■ Terminal section: Can be detected from the heat generated in the terminal box ■ Misalignment: Diagnosis is difficult ■ Unbalance: Diagnosis is difficult ■ Lubrication condition: Excess grease, etc., can be detected from trends *For more details, please feel free to download the PDF or contact us.
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【Purpose】 ■Diagnosis of rotating equipment *For more details, please feel free to contact us.
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In Japan, non-destructive testing using infrared camera imaging is still not widely recognized. Overseas, qualification systems have already been established, and the training of technicians is progressing. Such technology is particularly needed in Japan, which frequently experiences disasters like earthquakes and typhoons. Dōryokusha will continue its long-term efforts toward the full-scale dissemination of this groundbreaking inspection method.