沼氣發電機組在以下情況下需要進行大修：

　　The biogas generator set needs to undergo major repairs in the following situations:

　　1. 燃油和機油消耗顯著增加：柴油機的燃油和機油耗量顯著增加，現象是冒黑煙。

　　1. Significant increase in fuel and oil consumption: The fuel and oil consumption of diesel engines has significantly increased, with the phenomenon of emitting black smoke.

　　2. 工作無力：柴油機工作無力，加速后轉速顯著下降，不穩，聲音突變，排氣冒黑煙。

　　2. Work fatigue: The diesel engine works weakly, with a significant decrease in speed after acceleration, instability, sudden sound changes, and black smoke emissions from the exhaust.

　　3. 啟動困難：柴油機在常溫下啟動困難，運行過程中曲軸軸承、連桿軸承和活塞銷有敲擊聲。

　　3. Difficulty in starting: Diesel engines have difficulty starting at room temperature, and there are knocking sounds from the crankshaft bearings, connecting rod bearings, and piston pins during operation.

　　4. 部件磨損嚴重：柴油機內部缸套、活塞環磨損嚴重，氣缸橢圓度、錐度，活塞與氣缸之間的間隙，曲軸軸頸和連桿軸頸的橢圓度超過規定的極限。

　　4. Severe component wear: The cylinder liner and piston ring inside the diesel engine are severely worn, and the cylinder ovality and taper, clearance between the piston and cylinder, and ovality of the crankshaft journal and connecting rod journal exceed the specified limits.

　　5. 氣缸壓力不足：柴油機在溫度正常時，氣缸壓力達不到規定壓力的70%。

　　5. Insufficient cylinder pressure: When the temperature is normal, the cylinder pressure of the diesel engine cannot reach 70% of the specified pressure.

　　6. 長期運行后：一般普通機組大修周期在10000-12000小時左右，而某些高質量的沼氣發電機組大修周期在24000小時以上。

　　6. After long-term operation: Generally, the overhaul cycle of ordinary units is around 10000-12000 hours, while the overhaul cycle of some high-quality biogas generator units is over 24000 hours.

　　大修通常包括對發電機組所有部件的清洗，包括冷卻系統、燃料系統、電纜和接線板等，并在完成后進行全面的測試和調整，確保發電機組的性能符合標準。如果出現上述情況，建議聯系專業技術人員進行檢查和大修工作。

　　Overhaul usually involves cleaning all components of the generator set, including the cooling system, fuel system, cables, and terminal blocks, and conducting comprehensive testing and adjustments after completion to ensure that the performance of the generator set meets standards. If the above situation occurs, it is recommended to contact professional technicians for inspection and overhaul work.

　　本文由  沼氣發電機組 友情奉獻.更多有關的知識請點擊  http://www.hdlelisa.com/   真誠的態度.為您提供為全面的服務.更多有關的知識我們將會陸續向大家奉獻.敬請期待.

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