Device for measuring ratio of specific heat capacity of gas

A technology of specific heat capacity ratio and gas, which is applied in the field of devices for measuring the specific heat capacity ratio of gases, can solve the problems of high cost, low measurement accuracy, complex structure, etc., and achieves the effects of easy operation, small error in measurement results, and simple structure

Inactive Publication Date: 2012-11-14
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

[0007] The technical problems to be solved by the present invention are: the existing measuring devices are not easy to keep, high in cost, complicated in structure and low in measuring accuracy

Method used

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  • Device for measuring ratio of specific heat capacity of gas
  • Device for measuring ratio of specific heat capacity of gas
  • Device for measuring ratio of specific heat capacity of gas

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing.

[0014] Such as figure 1 As shown, the existing device for measuring the specific heat capacity ratio of gas generally includes a micro air pump 1, a buffer bottle 2, a flask 3, a photoelectric gate 4 and a period measuring instrument 5 connected in sequence, wherein a precision glass tube 3-1 is inserted above the flask 3 , a steel ball 3-2 is placed in the precision glass tube 3-1; the diameter of the steel ball 3-2 is about 0.01mm smaller than the inner diameter of the precision glass tube 3-1, and it can move freely up and down in the precision glass tube 3-1. There is a small hole on the side of 3-2, and a narrow-mouthed glass tube 3-3 is inserted, through which the gas to be measured can be injected into the flask.

[0015] In order to compensate the attenuation of the amplitude of the steel ball 3-2 caused by gas damping, a small pressure airflow is always injected t...

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Abstract

The invention discloses a device for measuring a ratio of the specific heat capacity of gas, which comprises a signal generator, an AC (Alternate Current) voltage meter, a resistance box, a speaker and a cylindrical container. After being connected in series with the resistance box, the output end of the signal generator is connected in series with a voice coil of the speaker; the AC voltage meter is connected with the voice coil and is used for measuring a terminal voltage of the voice coil; a piston capable of being pushed and pulled back and forth is arranged at one end of the cylindrical container; the other end of the cylindrical container is connected with a paper cone of the speaker; an enclosed space which is used for placing the gas to be measured and has an adjustable capacity is formed between both the ends of the cylindrical container; and an air vent is also arranged on the side wall of the cylindrical container. The device has simple structure and is convenient to operate; the volume of the container can be changed; the specific heat capacities at a constant voltage under different volumes are measured; and the measurement error is small.

Description

technical field [0001] The invention relates to a device for measuring gas specific heat capacity ratio. Background technique [0002] The gas specific heat capacity ratio is the ratio of the constant pressure specific heat capacity of the gas to the constant volume specific heat capacity of the gas. The ratio of the heat absorbed in the constant volume process to the change in temperature is used in the adiabatic equation. [0003] Existing devices for measuring the specific heat capacity ratio of gases generally include a micro-air pump connected in sequence, a buffer bottle, a flask, a photoelectric gate, and a period measuring instrument. A precision glass tube is inserted above the flask, and a steel ball is placed in the precision glass tube. There are the following disadvantages when using: [0004] One, the glass bottle part is fragile and difficult to keep. [0005] Its two, small steel ball and glass tube manufacturing process are complicated, and cost is high. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
Inventor 雷撼张凯宋建平
Owner 南京千韵电子科技有限公司
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