METHOD AND DEVICE FOR MONITORING ANOMALIES

• Main Author: AKECHI YOSHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 22.11.2018
• Subjects: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To enable accurate anomaly detection of a tilting bearing of steel making and conversion equipment, a rotary machine that rotates at low speed of less than 1 rpm.SOLUTION: An anomaly monitoring method is provided for detecting anomalies of a bearing of a tilting shaft for turning a furnace body of steel making converter equipment, the method comprising: a measurement signal collection step for collecting a vibration signal of the bearing measured on the furnace body rotating with molten steel in a pot from completion of oxygen blowing (P4) to molten steel tapping (P5); and an anomaly detection step for detecting anomalies of the bearing based on the vibration signal. The vibration signal measured for about 6-15 seconds from the time the erected furnace body starts turning for tapping of molten steel after the completion of oxygen blowing (P4) may be collected.SELECTED DRAWING: Figure 2 【課題】低速かつ１回転未満の回転機械である製鉄転炉設備の傾動軸受の異常を精度よく検知すること。【解決手段】製鉄転炉設備において、炉体を回転させる傾動軸の軸受の異常を検知する異常監視方法であって、吹錬完了後（Ｐ４）から出鋼（Ｐ５）までの溶鋼が鍋に入っている状態で回転する炉体において計測された軸受の振動信号を収集する計測信号収集ステップと、振動信号に基づいて軸受の異常を検知する異常検知ステップと、を含むことを特徴とする。その際、吹錬完了後（Ｐ４）、直立状態の炉体が溶鋼を出鋼するために回転し始めてから６〜１５秒程度計測された振動信号を収集してもよい。【選択図】図２