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空气冷却器是炼油厂的常用冷却设备。空冷风机大都普遍采用三角皮带传动,但由于要求在气温发生变化时,改变风机叶片角度或是开停部分风机,以调节风量,降低电耗,风机开停较频繁,皮带脱落现象严重,影响使用.为克服掉带问题,现在正采用联组皮带来取代普通三角皮带。南京炼油厂自1982年以来先后将6台空冷风机改造为 ZFJ5型风机。改造后节能效果良好。但所配用联组皮带的使用寿命相差很大。最短的使用2个多月即报废,而最长的已使用2年至今仍完好无损。为何同一型号风机的联组皮带使用寿命
Air coolers are common cooling equipment for refineries. Air-cooled fans are generally used V-belt drive, but due to the requirements of the temperature changes, the fan blade angle or open some fans to open and stop to regulate the air flow, reduce power consumption, fans start and stop more frequently, the belt off serious, affecting the use of To overcome the problem of dropout, tandem belts are being used to replace ordinary V-belts. Nanjing Refinery has been since 1982, six air-cooled fan transformed into ZFJ5-type fan. After transformation, energy-saving effect is good. However, the service life of the tandem belt is quite different. The shortest use of more than two months that is scrapped, and the longest has been used for two years still intact. Why the same type of fan combination of belt life