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    • 5. 发明授权
    • Pneumatic biasing of a linear actuator and implementations thereof
    • 线性致动器的气动偏压及其实施方案
    • US07748308B2
    • 2010-07-06
    • US11526362
    • 2006-09-25
    • Robb G. AndersonJames P. McCrickardThomas L. Beck
    • Robb G. AndersonJames P. McCrickardThomas L. Beck
    • F01B13/00F01B9/00
    • B30B1/38B30B1/18Y10T74/1868
    • An improved method and apparatus are provided for constructing and operating a linear actuator, and equipment incorporating a linear actuator, by operatively connecting a pressure biasing pneumatic arrangement between the driving member and the driven member of a mechanical linear actuator for applying a unidirectional biasing force between the driving and driven members, along an axis of motion, regardless of the location or movement of the driving and driven elements with respect to one another along the axis of motion. The pneumatic biasing arrangement is also configured, connected and operated to reduce the force which must be exerted by the driving and driven members in extending and retracting the linear actuator. The pneumatic biasing arrangement may further be configured for preferentially aiding extension or retraction of the actuator.
    • 提供了一种改进的方法和装置,用于构造和操作线性致动器,以及包括线性致动器的设备,通过在机械线性致动器的驱动构件和从动构件之间可操作地连接压力偏压气动装置,以在机械线性致动器之间施加单向偏置力 驱动和被驱动构件沿着运动轴线,而不管驱动元件和被驱动元件相对于运动轴线相对于彼此的位置或运动如何。 气动偏压装置还被构造,连接和操作以减小驱动和被驱动构件在伸直和缩回线性致动器时必须施加的力。 气动偏压装置还可以被配置为优先地辅助致动器的伸展或缩回。
    • 8. 发明授权
    • Linear rod pump operating method
    • 直线杆泵操作方法
    • US08555984B2
    • 2013-10-15
    • US13423482
    • 2012-03-19
    • Thomas L. BeckRobb G. AndersonRonald G. PetersonMichael A. MacDonald
    • Thomas L. BeckRobb G. AndersonRonald G. PetersonMichael A. MacDonald
    • F04B43/12F04B49/06F04B17/00E21B33/04E21B19/00
    • F04B47/02F04B47/04
    • A method for operating a linear rod pump to pump fluids, such as water and/or hydrocarbons, from a subterranean formation or reservoir, include a linear rod pump having a mechanical rack and pinion drive arrangement, adapted for attachment to a pumping mechanism, such as the polished rod at the top of a rod string in a hydrocarbon well. The rack gear, of the rack and pinion drive arrangement, is adapted for connection to, and movement with, the polished rod. The pinion gear does not translate with the rack gear, and is driven by a reversible motor for affecting up and down reciprocating motion of the rack gear and pumping mechanism. Some forms of the invention include a compressible gas counter-balance arrangement. Some forms of the invention include an electronic drive configured for dealing with electric power generated by the motor during a portion of the pumping cycle.
    • 用于操作线性杆泵以从地层或储层泵送诸如水和/或烃的流体的方法包括具有机械齿条和小齿轮驱动装置的线性杆泵,其适于附接到泵送机构,例如 作为在烃井中的杆串顶部的抛光杆。 齿条和小齿轮驱动装置的齿条适于与抛光棒连接并与其一起移动。 小齿轮不与齿条一起转动,并且由用于影响齿条和泵送机构的上下往复运动的可逆马达驱动。 本发明的一些形式包括可压缩气体反平衡装置。 本发明的一些形式包括电子驱动器,其构造成用于处理在泵送循环的一部分期间由电动机产生的电力。