AXIAL FLOW PUMP AND DELIVERY FLATTENED BEND PIPE

• Main Authors: KAZAMA TAKESHI, INOUE YASUHIRO, MANABE AKIRA
• Format: Patent
• Language: English
• Published: 09.06.2005
• Edition: 7
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; PIPES; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To reduce water passage loss further by a straightening vane, reduce pressure pulsation, and reduce noise and vibration accompanying the same while reducing the amount of civil engineering digging and water passage loss by a delivery flattened bend pipe in an axial flow pump. SOLUTION: The axial flow pump 10 is provided with an axial flow pump part 9 including a pump impeller 2 delivering water in an axial direction, the delivery flattened bend pipe communicated to a delivery side of the axial flow pump part 9 and extending in a lateral direction form a vertical direction, and having flow passage section shape change from round shape to rectangle shape, and the straightening vane 5 extending with dividing a flow passage section of the delivery flattened bend pipe 4. The straightening vane 5 is provided to keep the ratio of flow passage cross section area of inside of the straightening vane of the delivery flattened bend pipe 4 and whole flow passage cross section area of the delivery flattened bend pipe 4 in a range of 0.06-0.23. COPYRIGHT: (C)2005,JPO&NCIPI