CONTROL SYSTEM OF IMMERSION WATER-OIL LIFTING ELECTRIC PUMPS Russian patent published in 2000 - IPC

FIELD: electric machine engineering; applicable in control of product lifting units provided with immersion centrifugal electric pumps. SUBSTANCE: system consists of immersion electric pump for lowering of water surface and immersion electric pump for withdrawal of technogenic accumulation of oil products each of which is supplied from independent power switch and whose inputs are connected with outputs of control units. One control unit is connected with selector of water layer thickness provided with water level capacitive pickups, and the other control unit is connected with selector of oil product layer thickness provided with floating hermetically sealed oil product level pickups. System has at least one capacitive pickup 13 of control over interface level for prevention of water getting into lines of immersion electric pump for withdrawal of technogenic accumulation of oil products whose output is connected in parallel with output of floating hermetically sealed pickup of lower level of oil products. Control system is added with counter of number of switchings of immersion electric pump for withdrawal of technogenic accumulations of oil products that makes it possible to control over its capacity and optimize adjustment of operation of system as a whole. To prevent water from getting into pumped out oil products, mounted on body of immersion electric pump for withdrawal of technogenic accumulations of oil products is prefilter 8 made of partially hydrophobic material of sackcloth type and having meshes sizing 0.05-0.2 mm. To prevent solid particles of suspensions from getting into pumped out water mounted on body of immersion electric pump for lowering of water surface is prefilter made of finely perforated lavsan cloth. EFFECT: optimized and increased reliability of process of withdrawal of oil products from wells in regions of technogenic pollution. 3 cl, 2 dwg