中石化河南油田古城油矿采油三队使用的抽油机大多数型号CYJ5-3-26HB,其额定冲次为3、4、5次/分。部分油井由于供液不足及油稠等原因,需要调小冲次至1~2.5次/分,现场需要采用更换小直径电机皮带轮来实现。其直接的缺陷是包角内的弧长变小引起传动系数下降,皮带磨损加剧。研制的抽油机二次减速装置可以从根本上解决以上问题。 Most of the pumping units used by the three teams of Sinopec Henan Ancient Oilfield Mine pumping unit are CYJ5-3-26HB, rated at 3, 4, 5 times / min. Some oil wells due to lack of fluid and oil thick and other reasons, you need to adjust the small red to 1 ~ 2.5 times / min, the scene needs to be replaced by small diameter motor pulley to achieve. The immediate drawback is that the smaller arc length within the wrap angle causes a decrease in the transmission coefficient and an increase in belt wear. Developed pumping unit secondary deceleration device can fundamentally solve the above problems.