HYDRAULICALLY-DRIVEN DIAPHRAGM PUMP PLANT Russian patent published in 1997 - IPC

FIELD: discharge of liquid from deep wells in oil, mining and other industries. SUBSTANCE: plant includes power liquid vibration source mounted in well. Connected with power liquid vibration source is divider which includes housing where the following components are mounted: flexible tubular diaphragm with bearing member arranged in it, suction and delivery valves and pipe line for transportation of medium to be handled. Power liquid vibration source includes hydraulic accumulator and its charging pump mounted in well. Pump is connected with hydraulic accumulator on delivery end and with divider on suction end. Bearing member of diaphragm is made in form of three ribs rigidly interconnected at one point forming framework which has bore receiving fairing. Locating member for fairing is mounted above bore. Hydraulic accumulator has housing made in form of double pipe with flexible diaphragm inside it. One end of diaphragm is tightly and immovably secured in housing by means of blanks. Spring-loaded valve is tightly secured on other movable rod. Valve has rod with thrust member secured on its free end. Thrust member is used to limit longitudinal motion of diaphragm. Valve rod is secured inside guide bush of seat which is secured in housing opposite blank. Edges of housing are provided with coupling units for connecting other components of pump plant. EFFECT: enhanced reliability. 2 cl, 4 dwg