FIELD: engines and pumps.
SUBSTANCE: rotor 40 of screw pump includes shaft 42, the first set of thread turns 44 located on some part of external surface of shaft 42. At least one thread turn of set of thread turns 44 includes the slot located in its end part. Seal having the possibility of being rotated with shaft 42, and the first and the second pins at least of one turn 44 of thread of the set are located in the slot. The first end of the first seal is located opposite the first pin. The other end of seal is located opposite the second pin.
EFFECT: minimisation or elimination of slip flow of pump, which leads to obtaining of booster multi-phase pump with high pressure drop with compact length of rotor.
8 cl, 9 dwg
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|
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