公开(公告)号：US20080006325A1

公开(公告)日：2008-01-10

申请号：US11771891

申请日：2007-06-29

申请人： Craig Loubert ,  William Nugent

发明人： Craig Loubert ,  William Nugent

IPC分类号： F04B49/22

CPC分类号： F04B9/127 ,  F17D1/05 ,  Y10T137/0318 ,  Y10T137/2516 ,  Y10T137/85986

摘要： An automatic pump control device for an injection pump used to inject fluid (typically methanol) into oil or natural gas wells to prevent freezing. The device enables the pump to operate at rates as low as one full stroke per 1.5 minutes (i.e., 0.67 stroke/min), substantially slower than current rates of approximately fifteen strokes per minute. The device comprises a main body; an extension air pilot; a retraction air pilot; a toggle mechanism that actuates the extension air pilot to extend the pump piston, that at the end of the extension stroke actuates a retraction air pilot to retract the pump piston, and that automatically continues the two stroke cycle; a drive mechanism for driving the toggle mechanism; an overstroke mechanism to prevent over driving the retraction air pilot at the end of its stroke; an optional stroke speed adjustment valve; a circuit to circulate and transport a gas; and piston, spool, and sleeve for switching the path of the gas. The automatic pump control device operates over a wide range of flow rates and pressure ranges, thus enabling installation of the automatic pump control device to virtually all manufacturers' injection pumps.

摘要翻译： 用于注射泵的自动泵控制装置，用于将流体（通常为甲醇）注入油或天然气井以防止冻结。 该装置使得泵以1.5分钟（即0.67冲程/分钟）低达一个全行程的速率运行，基本上比每分钟大约十五冲程的当前速度慢。 该装置包括主体; 延伸航空飞行员 缩回空中飞行员 一个肘节机构，其致动延伸空气引导器以延伸泵活塞，在延伸行程结束时致动一个缩回空气导向件以缩回泵活塞，并且自动地继续两冲程循环; 用于驱动肘节机构的驱动机构; 在行程结束时防止过度驱动回缩空气飞行员的超行程机构; 可选的行程调速阀; 循环输送气体的电路; 以及用于切换气体路径的活塞，阀芯和套筒。 自动泵控制装置在宽范围的流量和压力范围内工作，从而能够将自动泵控制装置安装到几乎所有制造商的喷射泵中。