Abstract:
A system for controlling a piston pump to deliver a predetermined member of pumping strokes wherein, for each stroke, an index component is moved by a defined extent which is monitored by a sensor and, once the index component is at a control position the sensor stops operation of the piston.
Abstract:
A pressure tank fault detector and method provides a system (10) for detecting a fault in a pressure tank (12). The system includes a current transformer (40) positioned adjacent a pump power wire (22). A circuit (42) includes a timer (44), a data recorder (46), and a system status indicator (48). When the pump (18) operates, the current transformer (40) signals the circuit (42) and the timer (44) measures the signal duration. The data recorder (46) logs a short cycle when the timer (44) measures less than a selectable predetermined amount of time. When two or more short cycles are recorded, an alarm is produced. Preferably, the system (10) includes a test circuit (74) and allows selection of the number of short cycles before the alarm and whether to record only consecutive short cycles. Optionally, the system (10) detects and signals pump cycles exceeding a predetermined excessive run time.
Abstract:
A system for controlling a piston pump to deliver a predetermined member of pumping strokes wherein, for each stroke, an index component is moved by a defined extent which is monitored by a sensor and, once the index component is at a control position the sensor stops operation of the piston.
Abstract:
SE REFIERE A UN METODO DE CONTROL DE UNA BOMBA DE PISTON ACTIVADO POR UN FLUIDO PRESURIZADO PARA QUE ENTREGUE UN NUMERO PRE-DETERMINADO DE CARRERAS DE BOMBEO, DE MODO QUE, PARA CADA CARRERA SE MUEVA UN COMPONENTE INDICE EN UNA EXTENSION DEFINIDA, MONITOREADA POR UN SENSOR, Y, UNA VEZ QUE EL COMPONENTE INDICE ESTA EN UNA POSICION DE CONTROL, EL SENSOR DETIENE LA OPERACION DEL PISTON INTERRUMPIENDO EL SUMINISTRO DE FLUIDO PRESURIZADO HACIA ESTE. TAMBIEN SE PROVEE UN SISTEMA PARA CONTROLAR LA OPERACION DE LA BOMBA QUE ES IMPULSADA POR EL PISTON, EL CUAL INCLUYE: A) UN COMPONENTE INDICE; B) UN MECANISMO ACTUADOR QUE RESPONDE AL MOVIMIENTO DEL PISTON, EL CUAL PARA CADA CARRERA DEL PISTON, CAUSA QUE EL COMPONENTE INDICE SE MUEVA EN UNA DISTANCIA DEFINIDA; Y C) UN SENSOR QUE RESPONDE AL MOVIMIENTO DEL COMPONENTE INDICE Y QUE, AL DETECTAR MOVIMIENTO DEL COMPONENTE INDICE A UNA POSICION DE CONTROL, INTERRUMPE EL SUMINISTRO DE FLUIDO PRESURIZADO AL PISTON
Abstract in simplified Chinese:本发明揭示一种具有一电子计次器之气压驱动流体帮浦。该帮浦具有一带有一液体入口及一液体出口之帮浦箱。一切换机构运作于该帮浦箱内,用于当该帮浦箱内之液位降至一低液位位置时切换至排气口,且当该帮浦箱内之液位升至一高液位位置时切换至动力口(motive porting)。一电子计次器电路可以运作方式连接至该帮浦箱,用于响应该帮浦内之液位升至一预定液位来增加一存储计数。