TURBO PUMP

• Main Authors: WADA YUTAKA, SONODA TAKUJI, HORIUCHI SHOJI
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2023
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

To prevent the lowering of motor efficiency while efficiently cooling by suppressing a friction loss.SOLUTION: In a turbo pump 1 having a pump part 19 for boosting a boosted fluid by the rotation of an impeller 20, and a motor part 10 for rotating a connected spindle 28 of the impeller around an axial line, and cooling the motor part by making a part of the boosted fluid circulate to the motor part from the pump part in a direction along the spindle, the motor part comprises: a both-end closed cylindrical casing 3 which is coaxial with the spindle; an electric stator 18 accommodated in the casing; an electric rotor 14 which rotates integrally with the spindle at the inside via the electric stator and a gap G; and a circulation part 43 opened around the spindle which approaches the pump part in the casing, and making the boosted fluid circulate in the casing. The turbo pump has an air/liquid-separation part 100 for air/liquid-separating the boosted fluid circulating to the casing from the circulation part, distributing an air phase to the electric rotor, and distributing a liquid phase to the electric stator.SELECTED DRAWING: Figure 1 【課題】摩擦損失を抑制して効率よく冷却しつつ、モータ効率の低下を防止する。【解決手段】インペラ２０の回転により被昇圧流体を昇圧するポンプ部１９と、インペラの接続された主軸２８を軸線回りに回転するモータ部１０と、を備え、主軸に沿った方向にポンプ部からモータ部へと被昇圧流体の一部を流通させてモータ部を冷却するターボポンプ１であって、モータ部が、主軸と同心である両端の閉じた円筒状のケーシング３と、ケーシングの内部に収納された電動ステータ１８と、電動ステータとギャップＧを介してその内側に主軸と一体に回転する電動ロータ１４と、ケーシングにおけるポンプ部に近接した主軸の回りに開口してケーシングの内部に被昇圧流体を流通させる流通部４３と、を備え、主軸に設けられて流通部からケーシングに流通された被昇圧流体を気液分離し、気相を電動ロータに、液相を電動ステータに振り分ける気液分離部１００を有する。【選択図】図１