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Self circulation pump specific curve test instrument

A technology of pump characteristic curves and experimental instruments, which is applied in the direction of instruments, fluid dynamics tests, measuring devices, etc., can solve the problems of inconspicuous fracture conditions, high operating costs, and large equipment, and achieve obvious fracture conditions, Simple and intuitive operation, resource-saving effect

Inactive Publication Date: 2005-03-02
ZHEJIANG UNIV
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Problems solved by technology

[0003] The pump characteristic curve experiment is one of the important teaching contents of mechanical fluid mechanics. However, the traditional pump characteristic curve experiment instrument has certain disadvantages: first, the equipment is huge, and it often needs to build a special pool and three-phase power supply; This brings complicated operation and maintenance of equipment, and high operating costs; third, it is difficult to adjust the inlet water level, and the phenomenon of fracture is not obvious

Method used

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  • Self circulation pump specific curve test instrument
  • Self circulation pump specific curve test instrument
  • Self circulation pump specific curve test instrument

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Embodiment Construction

[0010] The self-circulating desktop pump characteristic curve tester has a water supply tank 1, a transparent water inlet pipe 2 on the water supply tank 1, a water inlet valve 3 and a pressure vacuum gauge 12 on the water inlet pipe 2, the other end of the water inlet pipe 2 is connected to the experimental pump 4 The inlet is connected, the experimental pump 4 is connected to the motor 6, the motor 6 is connected to the power meter 8, the tachometer 7 is used to measure the speed of the motor 6, the outlet of the experimental pump 4 is provided with a pressure gauge 11, and the outlet of the experimental pump 4 is connected to the steady water The pressure tank 5 is connected, and the outlet of the water stabilizing pressure tank 5 is provided with a water delivery pipeline 9, the other end of the water delivery pipeline 9 is connected with the water supply tank 1, and the water delivery pipeline 9 is provided with a flow regulating valve 10 and a Wentuli flowmeter 13 , Manto...

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Abstract

A self-loop desk-top pump characteristic curve is disclosed, comprising feed water tank, inlet valve on inlet pipe and combined pressure and vacuum gauge, with one end of inlet pipe linking to inlet of experimental pump which is linked to motor, pressure gage installed on outlet of experimental pump where links a stabilization water pressure tank whose outlet with water pipe linking to feed water tank, flow regulating valve and flowmeter with manometer on it installed on water pipe. The invention has simplified large structure; phenomenon of rupture working condition is shown clearly by using inlet valve to control the pressure of water flowing into water pipe; using separate self-loop water supply constant water supply system system and only 220V voltage, it is suitable for modern teaching require and has saved special spot for experiment.

Description

technical field [0001] The invention relates to an experimental measuring instrument, in particular to a self-circulating desktop pump characteristic curve experimental instrument. Background technique [0002] Corresponding to a certain rated speed n, the actual head H of the pump, the shaft power N, the relationship between the total efficiency η and the water flow Q of the pump is represented by a curve, which is called the characteristic curve of the pump, which can reflect the working performance of the pump. Can be used as the basis for selecting a pump. [0003] The pump characteristic curve experiment is one of the important teaching contents of mechanical fluid mechanics. However, the traditional pump characteristic curve experiment instrument has certain disadvantages: first, the equipment is huge, and it often needs to build a special pool and three-phase power supply; The operation and maintenance of the equipment brought about by this is complicated, and the op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00
Inventor 毛根海陈少庆胡卫红章军军杨敏丽程伟平
Owner ZHEJIANG UNIV
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