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公开(公告)号:US5180289A
公开(公告)日:1993-01-19
申请号:US750280
申请日:1991-08-27
申请人: Bruce Wenholz , R. H. Gault , Kerry A. Jones
发明人: Bruce Wenholz , R. H. Gault , Kerry A. Jones
IPC分类号: F04B47/02
CPC分类号: F04B47/028
摘要: An air-balance control system for a pumping unit minimizes the difference in torque on pumping unit components on the upstroke and the downstroke. The control system measures pump motor current and rod string position to effectuate porting air to or venting air from the air receiver tank in an air-balance system.
摘要翻译: 用于泵送单元的空气平衡控制系统最大程度地减少了上冲程和下行程上的泵单元部件上的扭矩差异。 控制系统测量泵电机电流和杆串位置,以实现在空气平衡系统中将空气吸入空气或从空气接收罐排出空气。