WATER TURBINE DEVICE AND AIR SUPPLY MECHANISM

• Main Author: MUKAI HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 11.10.2021
• Subjects: BLASTING; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; WEAPONS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

To obtain a water turbine device which can supply air to a cavitation generation area even if the cavitation swirls in a position away from a center of a suction pipe, and to obtain an air supply mechanism.SOLUTION: A water turbine device 1 includes: a runner 5 which converts energy of water into rotational energy of a spindle 3; a suction pipe 6 which is disposed at the downstream side of the runner 5 and into which water discharged from the runner 5 flows; and an air supply mechanism 7 which supplies air to an interior of the suction pipe 6. The air supply mechanism 7 includes: a first air supply pipe 71, serving as an annular hollow body, which is disposed within the suction pipe 6 and extends in a circumferential direction of the suction pipe 6; and a second air supply pipe 72 which is disposed ranging from an exterior to the interior of the suction pipe 6 and may supply air to an interior of the first air supply pipe 71. The first air supply pipe 71 is formed with air supply ports 73 which allow the interior and an exterior of the first air supply pipe 71 to communicate with each other and may blow air into the suction tube 6.SELECTED DRAWING: Figure 1 【課題】キャビテーションが吸出管の中心を離れて振れ回る場合でも、キャビテーションの発生領域に給気することができる水車装置および給気機構を得ること。【解決手段】水車装置１は、水の持つエネルギーを主軸３の回転エネルギーに変換するランナ５と、ランナ５の下流側に配置されて、ランナ５から吐出される水が流入する吸出管６と、吸出管６の内部に給気する給気機構７と、を備える。給気機構７は、吸出管６の内部に配置されて、吸出管６の周方向に延びる環状の中空体である第１の給気管７１と、吸出管６の外部から内部に亘って配置されて、第１の給気管７１の内部に空気を供給可能な第２の給気管７２と、を備える。第１の給気管７１には、第１の給気管７１の内部と外部とを連通し、吸出管６の内部に空気を吹出可能な給気口７３が形成されている。【選択図】図１