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Piston-type momentum experiment instrument with teaching effect flow digital-display function

A flow rate, piston-type technology, applied in the field of technical experiment measurement, can solve problems such as inconvenience, and achieve the effect of convenient real-time zero adjustment and good teaching effect.

Active Publication Date: 2015-09-02
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the teaching experiment, it will stop the experimental operation halfway, return to the state where the experiment started, and restart the experiment, which is very inconvenient

Method used

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  • Piston-type momentum experiment instrument with teaching effect flow digital-display function
  • Piston-type momentum experiment instrument with teaching effect flow digital-display function

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Experimental program
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Embodiment Construction

[0050] Such as figure 1 As shown, a piston-type momentum experimental instrument with teaching effect and flow digital display includes: a constant pressure water supply tank 6 with an outlet 7 on the side wall, the outlet 7 is a nozzle, and the constant pressure water supply tank 6 is set There is an overflow divider 15 that divides the constant pressure water supply tank 6 into the water inlet work area and the overflow area, and the constant pressure water supply tank 6 is provided with a water stabilizer that separates the water inlet work area into the water inlet area and the water stabilization work area. Orifice plate 22; The water collecting tank 38 that is connected with the outlet port 7 of the constant pressure water supply tank 6; The momentum tube for measuring the outlet port 7 jet flow force of the constant pressure water supply tank 6 is fixed in the water collecting tank 38; The liquid-gas conversion pressure measuring cylinder 2 in the water stabilizing work...

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Abstract

The invention discloses a piston-type momentum experiment instrument with a teaching effect flow digital-display function. The experiment instrument comprises a constant-pressure water supply tank, a water collection tank, a momentum tube, a liquid-gas conversion pressure measuring cylinder, a pressure difference sensor, a microcomputer digital display meter, and a self-circulating water supply device. The side wall of the constant-pressure water supply tank is provided with an outlet, and the outlet is a nozzle. The water collection tank is connected with the outlet of the constant-pressure water supply tank. The momentum tube is used for measuring the jet flow momentum force at the outlet of the constant-pressure water supply tank, and is fixed in the water collection tank. The liquid-gas conversion pressure measuring cylinder is arranged in a stable-water working area inside the constant-pressure water supply tank, and the top of the liquid-gas conversion pressure measuring cylinder is provided with a communicated positioning tube which is disposed in the central-axis horizontal plane of the outlet. The microcomputer digital display meter is used for converting a pressure signal detected by the pressure difference sensor into flow. The experiment instrument of the invention can reset automatically, can eliminate the error of air compression, can be zeroed in real time, is high in precision, can conveniently, digitally and accurately measure two basic physical quantities of a fluid mechanics momentum law experiment instrument, namely, jet flow rate and jet flow momentum, and has a very good teaching effect.

Description

technical field [0001] The invention relates to the field of technical experiment measurement, in particular to a piston-type momentum experimental instrument with teaching effect and flow digital display. Background technique [0002] The law of momentum is one of the basic theories of fluid mechanics and hydraulics, and its momentum equation is the mathematical expression of the law of momentum in theoretical mechanics in fluid mechanics and hydraulics. It reflects the relationship between the momentum change and the force of the fluid motion. Its characteristic is that it is not necessary to know the flow process inside the flow range, but only need to know the flow conditions on its boundary. The interaction force problem between fluid and boundary surface. Therefore, the experiment of the law of momentum is an indispensable content in the teaching process. [0003] Among them, the piston-type momentum law experimental instrument with the patent number ZL 89109218.8 ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/12
Inventor 毛欣炜毛根海
Owner ZHEJIANG UNIV
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