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专利申请号 :982 10 14 6 授权公告号 :2 32 4 2 83抽油井自动停机的控制器 本实用新型公开了一种油田上抽油井自动停机的控制器。是在井口出油管控制阀里装干簧管接在时间控制器上 ,阀里阀杆在有液时下行打开通道 ,无液时靠杆上弹簧使杆上行 ,缩短了杆端磁钢片与之上的
Patent application number: 982 10 14 6 Authorization notice number: 2 32 4 2 83 Controller for automatic shut-down of pumping well The utility model discloses a controller for automatic shut-down of oil pumping wells on the oil field. Is in the wellhead out of the control valve installed dry reed pipe connected to the time controller, the valve stem in the liquid when the downlink open the channel, no liquid by the rod spring up the rod, shortened rod end magnet plate and Above