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柴油發電機組溫度過高如何處理及預防

來源:http://dgxcbw.com   發布于:2017-04-03

D88尊龙  為了防止夏季柴油發電機組冷卻液溫度過高,在使用過程中,應該注意如下幾個方面:

  In order to prevent summer cooling fluid temperature is too high, diesel generating set in use process, should pay attention to the following several aspects:

  (1)正確使用封閉式冷卻系

  (1) the proper use of closed cooling system

  現代汽車發動機都采用封閉式冷卻系,散熱器蓋是密封的,并增添了一個膨脹水箱。發動機工作時,冷卻液蒸氣進入膨脹水箱內,冷卻后又流回散熱器,可防止冷卻液大量蒸發損失,并可提高冷卻液的沸點溫度。該冷卻系應使用具有防腐蝕、防沸、防凍和防水垢的優質冷卻液,并且在使用中必須保證密封,才能收到效果。

  Modern car engines are closed cooling system, the radiator cover is sealed, and added a expansion tank. Steam engine work, coolant into the expansion water tank, after cooling flow back to the radiator, a large amount of evaporation loss, can prevent the coolant and the boiling point of coolant temperature can be improved. The cooling system should be used with anti-corrosion, boiling, antifreeze and the scale of high quality cooling fluid, and must ensure that the seal in use, to receive the effect.

  (2)保持冷卻系外部和內部清潔

D88尊龙  (2) keep the cooling system of the external and internal clean

  這一點是提高散熱效能的重要條件之一。散熱器外部沾有泥土、油污或散熱片因碰撞變形時,均會影響風的通過,散熱器散熱效果變差,造成冷卻液溫度過高。因此散熱器出現這種情況應及時清洗或者修整。另外,冷卻系內積有水垢、泥砂或油污時,都會影響冷卻液的傳熱。加注劣質冷卻液或水,將會造成冷卻系積垢增多,而水垢的傳熱能力只有金屬的幾十分之一,從而冷卻效果變差。所以冷卻系中應加注優質的冷卻液。

  This is one of the important condition to increase the cooling efficiency. External radiator is stained with dirt, grease or heat sink due to collision deformation, all can affect the wind through, radiator cooling, cooling fluid temperature is too high. Therefore the radiator appear this kind of circumstance should be timely cleaning or repair. In addition, the cooling system of inner product with scale, mud, or oil, will affect the heat transfer of cooling fluid. Filling of inferior, coolant or water cooling system will cause fouling, and scale of the heat transfer ability is only a small percentage of the metal, and poor cooling effect. So in the cooling system should include quality of coolant.

  (3)保持冷卻液量充足當發動機處于冷態時,冷卻液液面應該位于膨脹水箱的高和低標志之間(圖 1)口如果液面低于膨脹水箱的低標志時,應及時添加。注意,膨脹水箱內的冷卻液不能注滿,應該留有膨脹余地。

D88尊龙  (3) keep the cooling fluid amount when the engine is cold, the coolant fluid level should be located in an expansion tank (figure 1) between the highest and lowest marks mouth if the liquid level is lower than the minimum mark, expansion tank should be added in time. Note that the cooling liquid can't fill inside the expansion water tank, should leave room for expansion.

D88尊龙  (4)保持柴油發電機組風扇皮帶張緊力適度

  (4) to maintain moderate diesel generating sets fan belt tension

D88尊龙  風扇皮帶過松,使水泵轉速過低,影響冷卻液的循環,并會加速皮帶的磨損。但皮帶過緊,又會使水泵軸承磨損。另外,皮帶上不能沾有油污。因此,應定期檢查調整風扇皮帶的張緊力。檢查時,用拇指按壓皮帶中部,如圖 2所示,約98N的力。如果皮帶撓度約為10-15mm,表明風扇皮帶張緊力合適。否則,應給予調整。調整時,可以移動發電機定位螺栓位置,來改變皮帶張緊力。如果更換新的風扇皮帶,檢測張緊力時,皮帶撓度約為8-10mm合適。

D88尊龙  Fan belt is too loose, make the pump speed is too low, influence the cooling fluid circulation, and accelerate the wear of belt. But the belt too loose or too tight, will make the water pump bearing wear. In addition, the belt cannot be stained with oil. Therefore, we should check regularly adjust the fan belt tension. Check when the thumb press the central belt, as shown in figure 2, about 98 n force. If the belt deflection of about 10 to 15 mm, suggests that appropriate fan belt tension. Otherwise, should be given to adjust. Adjustment, can move generator positioning bolt position, to change the belt tension. If change the new fan belt, detection of tension, the belt deflection about 8-10 mm.

D88尊龙  (5)避免發動機在大負荷工作時間過長發動機負荷很大時,會引起冷卻液溫度過高。例如有些功率小的柴油發電機為了多拉快跑而加大油門,有些柴油機在夏季使空調長時間運轉等,都容易造成發動機“開鍋”現象。因此,為防止發動機溫度過高,應及時換入低速擋,以造當減輕發動機負荷。

  (5) to avoid the engine work in the heavy load time is too long engine load is large, will cause the coolant temperature is too high. For example, some small diesel generator power to DORA run and step on the gas, some of the diesel engine in the summer air conditioning long time running, etc, are likely to cause the engine "boiled" phenomenon. Therefore, in order to prevent the engine temperature is too high, should be timely in low gear, to build when reduce the engine load.

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