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1 ,抽油杆扶正器(1)卡装式抽油杆扶正器 ,其优点是现场安装 ,磨损率低 ;其缺点是缚紧力低 ,减少过流面积 ,耐温低 (76 7℃ )。(2 )接箍旋转式抽油杆扶正器 ,其优点是现场安装 ,低磨损 ,能保护抽油杆接箍 ,减少扭矩 ;其缺点是减少过流面积 ,不能扶正杆体 ,耐温低 (6 0℃ )。(3)
1, Sucker Rod Centralizer (1) Snap-in sucker rod centralizer, the advantage of on-site installation, low wear rate; The disadvantage is low binding force to reduce the flow area, low temperature (76 7 ℃) . (2) Coupling rotary sucker rod centralizer, the advantage of on-site installation, low wear, sucker rod can protect the hoop to reduce torque; its disadvantage is to reduce the over-current area, 0 ° C). (3)