Development and investigation of electropump of increased service life with ball bearings

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Abstract

The results of laboratory investigation and real operation are presented on a high-speed two-stage electropump (EP) of increased service life. In the EP developed design the bearing’s balls are pressed against the cage surface of the thrust bearing, the radial movement of the rotor is decreased by use of slot seals with anti-friction rings, the length of electric motor’s shaft overhang is reduced, the shaft rigidity is increased owing to position of the second stage’s impeller on a hub of the first stage’s impeller. The EP service life in real operational conditions exceeds 22900 hours.

About the authors

1 1

Yuzhnoye State Design Office named after M. Yangel, Dnepropetrovsk, Ukraine

Author for correspondence.
Email: sadohina@ssau.ru
Ukraine

1 1

Yuzhnoye State Design Office named after M. Yangel, Dnepropetrovsk, Ukraine

Email: sadohina@ssau.ru
Russian Federation

1 1

Yuzhnoye State Design Office named after M. Yangel, Dnepropetrovsk, Ukraine

Email: sadohina@ssau.ru
Russian Federation

1 1

Yuzhnoye State Design Office named after M. Yangel, Dnepropetrovsk, Ukraine

Email: sadohina@ssau.ru
Russian Federation

References

  1. Васильев, Э.А. Герметические электронасосы / Э.А. Васильев, В.В. Невелич. – Л.: Машиностроение, 1968.
  2. Краев, М.В. Проектирование и испытание малорасходных систем / М.В. Краев, В.И. Горностаев, Г.В. Ефремов. - Красноярск, 1981.
  3. Кельзон, А.С. Расчет и конструирование роторных машин / А.С. Кельзон, Ю.Н. Журавлев, Н.В. Январев. – Л.: Машиностроение, 1977.
  4. Ковалев, Н.П. Расчет высокоточных шарикоподшипников / Н.П. Ковалев, М.З. Народецкий. – М.: Машиностроение, 1975.
  5. Бейзельман, Р.Д. Подшипники качения, справочник / Р.Д. Бейзельман [и др.]. – М.: Машиностроение, 1967.

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