公开(公告)号：US06283719B1

公开(公告)日：2001-09-04

申请号：US09186794

申请日：1998-11-05

申请人： Mark G. Frantz ,  Mark R. Honard ,  Patrick Manzie ,  Thomas J. Pavsek ,  Charlie P. Chesnes ,  Richard E. Nemer

发明人： Mark G. Frantz ,  Mark R. Honard ,  Patrick Manzie ,  Thomas J. Pavsek ,  Charlie P. Chesnes ,  Richard E. Nemer

IPC分类号： F04B1924

CPC分类号： F04B43/00 ,  F04B51/00

摘要： A tube in a pumped fluid system can become obstructed by a clog. The clog is automatically cleared in response to an obstruction signal by modifying the pumping cycle which is normally used to pump the fluid. In particular, the pumping cycle is stopped after a compression stroke to apply sustained high pressure in the clogged tube, using the same fluid and the same pump, to expel the clog from the tube. The obstruction signal is derived by measuring pressure during a portion of the pumping cycle when elevated pressure due to viscosity effects have subsided. Therefore, if the pressure remains elevated, a determination of an obstructed state can reliably be made which may be caused by a clog.

摘要翻译： 泵送流体系统中的管可能被阻塞阻塞。 通过改变通常用于泵送流体的泵送循环，阻塞响应于阻塞信号被自动清除。 特别地，在压缩行程之后停止泵送循环，以使用相同的流体和相同的泵在堵塞的管中施加持续的高压以从管中排出堵塞物。 阻塞信号是通过在泵送循环的一部分期间通过测量由于粘度影响降低的高压而产生的压力导出的。 因此，如果压力保持升高，则可以可靠地确定妨碍状态，这可能是由堵塞引起的。