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A Variation Temperature Air Viscosity Coefficient Meter

A technology of viscosity coefficient and measuring instrument, which is applied in the field of thermal physics experiment teaching instruments, and can solve the problems of lack of teaching and experiment instruments

Active Publication Date: 2018-08-17
南京千韵电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To quantitatively and accurately verify this relationship and measure the viscosity coefficient of air, there is currently a lack of teaching and experimental instruments in this regard.

Method used

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  • A Variation Temperature Air Viscosity Coefficient Meter
  • A Variation Temperature Air Viscosity Coefficient Meter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The whole instrument adopts an integrated structure, the top of the instrument casing (1) is a measuring device for variable temperature air viscosity coefficient, and the lower part of the instrument casing (1) is the instrument display and control part. On the top of the instrument case (1), there is a semiconductor refrigeration system (2) that can pass through the outer plexiglass cover (3) and the inner plexiglass cover (4) to cool down the airtight space inside the cover. There is a pair of parallel and close discs inside the inner plexiglass cover (4)—the upper disc (6) and the lower disc (7). The lower disc is driven by the motor (9) to rotate on a fixed axis, while the lower disc is driven by the motor (9). The upper disc (6) close to the lower disc (7) is suspended by the torsion wire (5). When the lower disc (7) rotates, the viscous moment of the upper disc (6) under the air viscous force and the torsion wire Under the combined action of the torsional force a...

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Abstract

Provided is a temperature change air viscosity coefficient tester. The tester employs an integrated structure. The whole tester is installed on a housing. A temperature change air viscosity coefficient measuring device is arranged at the top of the housing. An instrument display part is arranged at the lower part of the housing. A thermal insulation enclosed space composed of double-layer organic glass cover shells, a semiconductor refrigeration system and a PTC ceramic heating system are arranged at the top of the housing. Through shifting of a switch, air in the enclosed space is cooled or heated, and a local temperature change system is created. A rotating disc air viscous force measuring system is arranged in the enclosed space composed of double-layer organic glass cover shells. The system is composed of two discs which are parallel to each other, has a close distance and can rotate along the same axis. The lower disc is driven by a motor and can carry out fixed axis rotation. The upper disc close to the lower disc is hung by a torsion wire.

Description

technical field [0001] The invention relates to a thermal physics experiment teaching instrument, in particular to a temperature-variable air viscosity coefficient measuring instrument. Background technique [0002] The viscosity coefficient of air is an important physical constant, and the accurate determination of the viscosity coefficient of air is of great significance both in theory and in practice. However, because the value of the viscosity coefficient of air is very small, it is generally difficult to measure it in the experiment. The existing teaching instruments for measuring the viscosity coefficient of air can only be based on demonstration. In addition, according to the microcosmic interpretation of molecular physics, the viscosity coefficient of air should be proportional to the average velocity of air molecules or the square root of the gas thermodynamic temperature. To quantitatively and accurately verify this relationship and measure the viscosity coefficie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/16
Inventor 钱仰德雷撼张凯
Owner 南京千韵电子科技有限公司