D88尊龙

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D88尊龙柴油發電機組操作容易出現的幾種錯誤?

來源:http://dgxcbw.comD88尊龙   發布于:2018-05-17

柴油機在機油不足時運轉

The diesel engine operates when the oil is insufficient

D88尊龙此時會因機油供給不足而造成各摩擦副表面供油不足,導致異常磨損或燒傷。為此,柴油發電機起步前和柴油機運轉過程中要保證機油充足,防止由于缺油而引起拉缸、燒瓦故障。

D88尊龙At this time, due to insufficient oil supply, the friction surface of each pair of friction pairs is insufficient, resulting in abnormal wear or burn. To this end, the diesel generator must ensure sufficient oil before starting and during the operation of the diesel engine, so as to prevent the failure of cylinder and tile burning due to lack of oil.

錯誤操作二

Error operation two

D88尊龙帶負荷急停機或突然卸除負荷后立刻停機

Stop immediately after loading or abruptly discharging load.

柴油發電機熄火后冷卻系水的循環停止,散熱能力急劇降低,受熱件失去冷卻,易造成氣缸蓋、氣缸套、氣缸體等機件過熱,產生裂紋,或使活塞過度膨脹卡死在缸套內。另一方面,柴油發電機停機時未經怠速降溫,會使摩擦面含油不足,當柴油機再次啟動時會因潤滑不良而加劇磨損。因此,柴油發電機熄火前應卸除負荷,并逐漸降低轉速、空載運轉幾分鐘(要求空載運轉3分鐘)。

QQ截圖20171025151846.jpg

D88尊龙After the diesel generator is extinguished, the cooling system water circulation stops, the heat dissipation capacity is drastically reduced, the heating parts are lost and the parts of the cylinder head, cylinder liner and cylinder body are overheated, and the cracks are produced, or the excess expansion card of the piston is killed in the cylinder sleeve. On the other hand, the diesel generator will not be cooled by the idle speed during the shutdown, which will make the friction surface oil deficient. When the diesel engine starts to start again, it will aggravate the wear because of the bad lubrication. Therefore, the diesel generator should be dismounted before the fire is extinguished, and gradually reduce the rotational speed and run for several minutes without load. (it requires no load running for 3 minutes).

錯誤操作三

D88尊龙Error operation three

D88尊龙冷啟動后未暖機就帶負荷運轉

After the cold start, the non warmer is loaded with load

柴油發電機冷機啟動時,由于機油黏度大、流動性差,是機油泵供油不足,機器摩擦面因缺油潤滑不良,造成急劇磨損,甚至發生拉缸、燒瓦等故障。因此,柴油機冷卻啟動后應怠速運轉升溫,待機油溫度達到40℃以上(在冬季使用時,等冷卻水度達到60℃時)時再帶負荷運轉;機器起步應掛低速擋,并循序在每一擋位行駛一段里程,直到油溫正常、供油充分后,方可轉為正常行駛。

When the diesel generator is started, the engine oil pump is poor in oil supply due to the poor oil viscosity and poor fluidity, and the machine friction surface is badly worn because of poor oil lubrication. Therefore, the diesel engine should be heated at idle speed after cooling, and the engine oil temperature is above 40 degrees centigrade (when used in winter, when the cooling water reaches 60 degrees C) and then with load operation; the machine should start with low speed gear and run a period of mileage in every position in sequence until oil Wen Zhengchang, oil supply is full, then it can be turned into positive. Drive often.

錯誤操作四

Error operation four

柴油機冷啟動后猛轟油門

D88尊龙Heavy throttle of diesel engine after cold start

D88尊龙若猛轟油門,則柴油發電機轉速急劇升高,會造成機上的有些摩擦面因產生干摩擦而劇烈磨損。另外,轟油門時活塞、連桿和曲軸受理力變化大,引起劇烈撞擊,易損壞機件。

If the throttle is struck fiercely, the speed of the diesel generator will increase sharply, which will cause some friction surfaces on the machine to wear violently due to dry friction. In addition, the piston, connecting rod and crankshaft receiving force change greatly during the throttle, causing violent impact and easily damaging the machine parts.

錯誤操作五

Error operation five

D88尊龙在冷卻水量不足或冷卻水、機油溫度過高的情況下運轉

Run under insufficient cooling water or high temperature of cooling water and oil.

柴油發電機冷卻水量不足會降低其冷卻效果,柴油機因得不到有效的冷卻而過熱;冷卻水、機油的油溫過高,也會引起柴油機過熱。此時柴油發電機氣缸蓋、氣缸套、活塞組件及氣門等主要受熱負荷大,其機械性能如強度、韌性等急劇下降,使零件變形增加,減小了零件間的配合間隙,加速機件磨損,嚴重時還會產生裂紋、機件卡住的故障。柴油發電機過熱還會惡化柴油機燃燒過程,使噴油器工作失常,霧化不良,積炭增多。

The insufficient cooling water of diesel generators will reduce the cooling effect. The diesel engine overheat because of the lack of effective cooling; the high temperature of the cooling water and oil will also cause the diesel engine to overheat. At this time, the main heat load of the cylinder head, cylinder sleeve, piston assembly and valve of the diesel generator, such as the mechanical properties such as strength and toughness declined sharply, increased the deformation of the parts, reduced the clearance between parts and accelerated the wear of the machine parts, and also caused the failure of the cracks and the jammed parts of the machine parts. The overheating of the diesel generator will also deteriorate the combustion process of the diesel engine, resulting in abnormal operation of the injector, poor atomization and increased carbon deposition.


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