Gas specific heat ratio measuring method and system thereof

A technology of specific heat capacity ratio and measurement method, applied in the field of measurement, can solve the problems of inability to correct the influence of temperature and humidity environment, low experimental measurement accuracy, large measurement error, etc.

Inactive Publication Date: 2015-12-09
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has the following defects: 1. It is difficult to realize the simultaneous measurement of pressure and volume, and it is easy to produce large measurement errors when measuring instantaneous pressure
2. Unable to correct the influence of temperature and humidity environment in the experiment
3. Experimental measurement accuracy is low

Method used

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  • Gas specific heat ratio measuring method and system thereof
  • Gas specific heat ratio measuring method and system thereof
  • Gas specific heat ratio measuring method and system thereof

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Embodiment Construction

[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0041] figure 1 Shown is a structural schematic diagram of an embodiment of a gas specific heat capacity ratio measurement system of the present invention. The gas specific heat capacity ratio measuring system comprises: a gas specific heat capacity ratio measuring device (100), a controller (900); the gas specific heat capacity ratio measuring device (100) includes a barometer (102), a flask (104), a flask stopper ( 105), differential pressure gauge (106), U-shaped tube (111), scale (112), water column (113), glass thin tube (114), air bag (115), support (116); wherein, U-shaped tube Be equal-diameter (R=1.598cm) cylindrical U-shaped tube, water column (113) is the non-transparent liquid that tap water and dyestuff mix, and air bag (115) is the hand-held inflatable ball that has deflation valve, and flask (104) is gas Glass flask (effective...

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Abstract

The invention discloses a gas specific heat ratio measuring method and a system thereof. The system comprises a gas specific heat ratio measuring device, a controller, as well as temperature and humidity sensors of which the output ends are respectively connected with an input end of a measuring module of the controller. The method comprises the steps: (1) before the gas specific heat ratio is measured, obtaining a gas volume value by measuring and writing into a data recording module of the controller; (2) writing measuring data into a data measuring module of the controller, wherein the input end of the measuring module is connected with an atmosphere intensity of pressure sensor, the humidity and temperature sensor, a photogate, a pressure difference sensor; (3) processing the data by an operation module; (4) outputting a result. Measuring on intensity of pressure and volume can be realized at the same time while a measuring error of an instant intensity of pressure is small, influence of a temperature and humidity environment in an experiment can be corrected and an experiment measuring precision is high.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to a gas specific heat capacity ratio measurement method and a system thereof. technical background [0002] At present, the general experimental instrument for measuring gas specific heat capacity ratio indirectly measures gas specific heat capacity ratio by measuring the simple harmonic vibration period of steel balls. Generally, a precision glass tube is inserted above the flask, and a steel ball is placed in the precision glass tube. The diameter of the steel ball is about 0.01mm smaller than the inner diameter of the precision glass tube. It can move freely up and down in the precision glass tube. There is a hole on the side of the flask. A small hole, and insert a glass tube with a thin mouth, through which the gas to be measured can be injected into the flask. In order to compensate the attenuation of steel ball amplitude caused by gas damping, a small-pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/00
Inventor 张开骁马爱斌江静华胡立群陈敦军雷撼
Owner HOHAI UNIV
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