МЕТОДИКА ТЕХНИЧЕСКОГО ДИАГНОСТИРОВАНИЯ ПРИВОДА ШТАНГОВОГО СКВАЖИННОГО НАСОСА ЦЕПНОГО ТИПА ПЦ-60-18-3,0-0,5/2,5

Abstract

The paper presents the node failure analysis of chain drive deep-well pump in PAO «Tatneft» and UK OOO «TMS-grupp» by means of statistical quality control method - ABC-analysis (or Pareto analysis). During the operation of long-stroke chain drives, nodes have been identified that require modernization. In particular, systematic failures of the traction chains, the counterweight carriage, the carriage rolling pin, the cargo belt, the cable suspension, the sprocket assembly, the intermediate support and the loss of lubricating oil due to the leakproofness of the housing of the transforming drive mechanism are noted.\nThe chain drive main advantage over a traditional pumping unit is to pro- vide the best conditions for low-yield operation and complicated wells stock by increasing the plunger stroke length and reducing the swing frequency. However, their reliability in comparison with rocking machines leaves much to be desired, so there is a question about increasing the chain drive nodes reliability.\nBased on ABC-analysis revealed that the main share of failures, related with gear and rope suspension. It established that in the chain drive manual absent permissible limits for metal thinning of chain drive, vibration velocity on the bearings of the traction chain; rejection rates of mechanical damage to the base metal. A technique for technical diagnostics has been developed, including various types of non-destructive testing: visual measuring control, ultrasonic thickness measurement, vibration diagnostics, wattmetering.