Relation Between Rotational Speeds and Flow Conditions in the Counter-Rotating Type Pumping System

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Other Title
  • 相反転方式軸流ポンプシステムの回転速度自己調節機能と流れの関係
  • ソウ ハンテン ホウシキ ジクリュウ ポンプ システム ノ カイテン ソクド ジコ チョウセツ キノウ ト ナガレ ノ カンケイ

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Description

Turbo-pumps have weak points, such as the pumping operation becomes unstable in the rising portion of the head characteristic and / or the cavitation occurs under the low suction head. To overcome simultaneously the both weak points, the authors have proposed the unique pumping system which composed of counter-rotating type impellers and the motor with double rotors. The impeller speeds are self-controlled in response to the pumping discharge. In this paper, the flow conditions around the counter-rotating impellers are discussed experimentally in connection with the rotational speeds.

Journal

  • Turbomachinery

    Turbomachinery 33 (6), 336-343, 2005

    Turbomachinery Society of Japan

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