液压反馈抽稠泵
液压反馈抽稠泵-
由于液压反馈式抽稠泵的特殊结构，在下冲程时，液柱载荷作用在泵上，以增大悬点载荷帮助抽油杆柱顺利下行，致使其杆柱设计方法与普通泵不同。
The down stroke , due to the special structure of hydraulic feedback pump , the liquid column loads on the pump to increase rod load to help sucker rod smoothly downstream , resulting in the rod string design method is different from the ordinary pump .