FIELD: manufacture of pumps and turbo-pumps provided with units for reduction of shaft vibrations.
SUBSTANCE: proposed turbo-pump unit includes housing with front cover and suction branch pipe fitted in housing on bearings, two coaxial shafts with circular cavity in between them; each shaft carries impeller and drive turbine. Front cover has radial throttling holes and cylindrical bore forming circular chamber together with outer surface of inner shaft and end surface of outer shaft. This chamber is communicated with suction area by means of said throttling holes. Cavity in between shafts is communicated with turbine outlet on one side and with circular chamber on other side.
EFFECT: enhanced reliability; reduction of overall dimensions due to intensified dampening of shaft vibrations.
2 dwg
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