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有油微油无油空压机的含油量

2026-04-15Views:

有油、微油、无油空压机在含油量上存在显著差异,具体如下:

  1. 有油空压机
    • 含油量较大:有油空压机在压缩过程中会向螺杆腔注入润滑油,这些润滑油会混入压缩空气中,导致排气口排出的气体含油量较高。
    • 标称含油量:国内制造业中,80%以上的空压机为喷油螺杆空压机(又称微油螺杆空压机),其标称压缩空气的含油量为2~5ppm。然而,实际含油量可能因工况条件、维护保养等因素而远超标称值,甚至高出两到三个数量级。
  2. 微油空压机
    • 含油量相对较低:微油空压机虽然也注入润滑油,但通过油气分离器、后置过滤器后处理设备,可以过滤掉大部分油分
    • 实际含油量:经过后处理后,微油空压机输出的空气油分含量通常在3-5ppm之间。部分高端机型通过优化油气分离系统和采用高精度过滤器,可将含油量降至1ppm以下,但需频繁更换滤芯以维持性能。
  3. 无油空压机
    • 含油量极低:无油空压机从源头杜绝润滑油进入压缩腔,因此排气口排出的气体含油量极低。
    • 具体含油量:无油空压机的含油量通常为0.01ppm,甚至更低。例如,干式无油螺杆空压机通过采用聚四氟乙烯复合涂层减少摩擦,并配合气封+油封完全分离的结构设计,输出空气油分含量≤0.001ppm,可稳定达到ISO 8573-1 Class 0级无油标准(油分“未检出”级别)。
    • 全无油空压机:还有一种全无油的空压机,它不采用油润滑,而是采用水润滑,因此最终排出的气体完全不含油。

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