CN202947984U - Measurement device for specific heat ratio of gas - Google Patents
Measurement device for specific heat ratio of gas Download PDFInfo
- Publication number
- CN202947984U CN202947984U CN 201220700559 CN201220700559U CN202947984U CN 202947984 U CN202947984 U CN 202947984U CN 201220700559 CN201220700559 CN 201220700559 CN 201220700559 U CN201220700559 U CN 201220700559U CN 202947984 U CN202947984 U CN 202947984U
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- flask
- gas
- glass tube
- small ball
- ratio
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Links
- 238000005259 measurement Methods 0.000 title claims abstract description 16
- 239000011521 glass Substances 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 230000005622 photoelectricity Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model relates to a measurement device for the specific heat ratio of gas. The measurement device comprises a micro gas pump, a gas storage cylinder, a flask and a photoelectric door, wherein a gas amount adjustment knob is installed on the micro gas pump; a gas guide tube is used for connecting the micro gas pump to the gas storage cylinder; an adjustment valve and a pressure sensor are installed at an opening of the gas storage cylinder; the flask is connected with the gas storage cylinder via a guide tube; small steel balls are filled in a glass tube of the flask; the photoelectric door is fixed by virtue of an iron stand; the pressure sensor and the photoelectric door are connected to a mainframe box via conductive wires; and a pressure sensor indication lamp, a photoelectric door indication lamp, a liquid crystal display screen and a switch are further arranged on the mainframe box. The measurement device disclosed by the utility model is simple to operate, simplifies measurement steps, reduces artificial reading errors, and improves the measurement accuracy.
Description
Technical field
The utility model relates to a kind of physics facility, especially relates to a kind of measurement mechanism of Ratio of Specific Heats of Air.
Background technology
Ratio of the molar heat capacities of gas is called the coefficient of heat insulation of gas, is a thermodynamic (al) important parameter.The method of the specific heat ratio of mensurated gas composition commonly used has adiabatic expansion method, vibratory drilling method.The former measuring error is large, and latter's measurement parameter is many, and device is complicated, complex operation.
The utility model content
In order to overcome above-mentioned shortcoming, the utility model proposes a kind of measurement mechanism of Ratio of Specific Heats of Air, this plant area is little, and is simple to operate, and effectively reduced personal error, and measuring accuracy is high.
the utility model is achieved in that a kind of measurement mechanism of Ratio of Specific Heats of Air, comprise micro air pump, gas bomb, flask, the photoelectricity door, the tolerance adjusting knob is housed on described micro air pump, wireway is connected to gas bomb with micro air pump, at the gas bomb bottle mouth position, variable valve and pressure transducer are housed, described flask is connected with gas bomb by conduit, in the glass tube of flask, small ball is housed, described photoelectricity door is fixed by iron stand, it is characterized in that: pressure transducer and photoelectricity door are wired on mainframe box, also be provided with the pressure transducer pilot lamp on described mainframe box, photoelectricity door pilot lamp, LCDs and switch.
Described photoelectricity door is installed to outside the glass tube of the flask higher than small ball position.
The diameter of described small ball is less 0.01～0.02 millimeter than the diameter of glass tube.
Described flask is offered an aperture on glass tube, in measuring process, small ball is vertically done simple harmonic oscillation take aperture as the equilibrium position.
The utility model has the advantages that: adopt pressure transducer, photoelectricity door and main machine structure, can directly accurately read real-time gas pressure intensity in flask, with the vibration period of bead, improved and first passed through the barometric surveying atmospheric pressure, then obtained the indirect measurement method of pressure in flask according to formula, simplified measuring process, reduce artificial reading error, improved measuring accuracy.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic diagram of flask;
Fig. 3 is host circuit board structure of block diagram schematic diagram;
In figure: micro air pump 1, tolerance adjusting knob 2, variable valve 3, pressure transducer 4, gas bomb 5, flask 6, small ball 7, photoelectricity door 8, iron stand 9, pressure transducer pilot lamp 10, photoelectricity door pilot lamp 11, LCDs 12, mainframe box 13, starting switch 14, reset switch 15, aperture 16.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
Device described in the utility model: comprise micro air pump, gas bomb, special-purpose flask, small ball, photoelectricity door, iron stand, pressure transducer, mainframe box, LCDs, starting switch, reset switch, status indicator lamp, main circuit board, wire, cable etc.
as shown in Figure 1, the measurement mechanism of Ratio of Specific Heats of Air comprises micro air pump 1, tolerance adjusting knob 2 is housed on it, wireway is connected micro air pump 1 with gas bomb 5, gas bomb 5 bottle mouth positions are equipped with variable valve 3 and pressure transducer 4, flask 6 is connected with gas bomb 5 by conduit, small ball 7 is housed in the glass tube of flask 6, the diameter of small ball is less 0.01～0.02 millimeter than the diameter of glass tube, photoelectricity door 8 is fixing by iron stand 9, be installed to outside the glass tube of the special-purpose flask 6 slightly higher than small ball 7 positions, pressure transducer 4 and photoelectricity door 8 are wired on mainframe box 13.Mainframe box 13 comprises pressure transducer pilot lamp 10, photoelectricity door pilot lamp 11, LCDs 12, starting switch 14, reset switch 15.
As shown in Figure 2, flask 6 is offered an aperture 16 on glass tube, and in measuring process, small ball 7 is vertically done simple harmonic oscillation take aperture as the equilibrium position.
As shown in Figure 3, host circuit comprises the pressure transducer circuit take PIC16F877A as main chip, photoelectricity gate signal circuit, liquid crystal display drive circuit, indicator light circuit, crystal oscillating circuit, reset circuit, AC-DC conversion mu balanced circuit.
Take the specific heat ratio of measuring air as example, concrete steps are as follows:
1. measure the diameter d of small ball with micrometer caliper, measure the quality m of small ball with physical balance.
2. connect experimental provision, open micro air pump, press the starting switch of main frame, suitably control the flow of micro air pump, can make small ball vertically do simple harmonic oscillation, the vibration number of photoelectricity goalkeeper small ball take aperture as the equilibrium position in glass tube, pressure transducer is with the pressure signal of gas bomb, pass the signal on main frame by wire respectively, after host process, with vibration period T and pressure p in the liquid crystal screen display.
3. known proprietary flask volume V is by formula Y=64mV/T
2pd
4Can obtain the specific heat ratio of air.
Above structure of the present utility model is set forth, but the embodiment that the utility model is introduced in this not conditional intention, in the scope that does not deviate from the utility model purport, the utility model can have multiple variation and modification.
Claims (4)
1. the measurement mechanism of a Ratio of Specific Heats of Air, comprise micro air pump, gas bomb, flask, the photoelectricity door, the tolerance adjusting knob is housed on described micro air pump, wireway is connected to gas bomb with micro air pump, at the gas bomb bottle mouth position, variable valve and pressure transducer are housed, described flask is connected with gas bomb by conduit, in the glass tube of flask, small ball is housed, described photoelectricity door is fixed by iron stand, it is characterized in that: pressure transducer and photoelectricity door are wired on mainframe box, also be provided with the pressure transducer pilot lamp on described mainframe box, photoelectricity door pilot lamp, LCDs and switch.
2. the measurement mechanism of Ratio of Specific Heats of Air according to claim 1, it is characterized in that: described photoelectricity door is installed to outside the glass tube of the flask higher than small ball position.
3. the measurement mechanism of Ratio of Specific Heats of Air according to claim 1, it is characterized in that: the diameter of described small ball is less 0.01～0.02 millimeter than the diameter of glass tube.
4. the measurement mechanism of Ratio of Specific Heats of Air according to claim 1, it is characterized in that: described flask is offered an aperture on glass tube, and in measuring process, small ball is vertically done simple harmonic oscillation take aperture as the equilibrium position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220700559 CN202947984U (en) | 2012-12-18 | 2012-12-18 | Measurement device for specific heat ratio of gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220700559 CN202947984U (en) | 2012-12-18 | 2012-12-18 | Measurement device for specific heat ratio of gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202947984U true CN202947984U (en) | 2013-05-22 |
Family
ID=48423680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220700559 Expired - Fee Related CN202947984U (en) | 2012-12-18 | 2012-12-18 | Measurement device for specific heat ratio of gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202947984U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237061A (en) * | 2014-09-30 | 2014-12-24 | 四川大学 | Method for measuring air specific heat ratio via vibration of drumhead object |
| CN104237062A (en) * | 2014-09-30 | 2014-12-24 | 四川大学 | Method for measuring air ratio and heat capacity ratio by vibration of piston in single-end sealed cylinder |
| CN104237063A (en) * | 2014-09-30 | 2014-12-24 | 四川大学 | Method for vibration measurement of air specific heat ratio by piston in sealing cylinder |
| CN104237303A (en) * | 2014-09-30 | 2014-12-24 | 四川大学 | Method for measuring specific heat ratio of air through vibration of small ball |
| CN104237304A (en) * | 2014-09-30 | 2014-12-24 | 四川大学 | Method for testing specific heat ratio of air through piston oscillation in cylinder with one end sealed |
| CN104266931A (en) * | 2014-09-30 | 2015-01-07 | 四川大学 | Method for measuring specific heat capacity ratio of air by vibration of piston in drum with two sealed ends |
| CN104297289A (en) * | 2014-10-28 | 2015-01-21 | 四川大学 | Improved device for measuring air specific heat ratio through adopting vibration method |
| CN104316560A (en) * | 2014-10-28 | 2015-01-28 | 四川大学 | Improved device for measuring air specific heat ratio through vibration method |
| CN104849309A (en) * | 2015-05-25 | 2015-08-19 | 南京工业大学 | Intelligent tester and testing method for testing gas ratio and heat capacity ratio |
| CN105136606A (en) * | 2015-09-10 | 2015-12-09 | 河海大学 | Gas specific heat ratio measuring method and system thereof |
| CN107167398A (en) * | 2017-07-21 | 2017-09-15 | 曹元昊 | A kind of device and its measuring method for measuring Ratio of Specific Heats of Air |
| CN108872307A (en) * | 2018-07-30 | 2018-11-23 | 江苏理工学院 | A kind of Ratio of Specific Heats of Air experimental measurement system based on IoT technology |
-
2012
- 2012-12-18 CN CN 201220700559 patent/CN202947984U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266931B (en) * | 2014-09-30 | 2016-08-17 | 四川大学 | The method that air specific heat ratio is surveyed in two ends sealed cylindrical inner carrier vibration |
| CN104237062A (en) * | 2014-09-30 | 2014-12-24 | 四川大学 | Method for measuring air ratio and heat capacity ratio by vibration of piston in single-end sealed cylinder |
| CN104237063A (en) * | 2014-09-30 | 2014-12-24 | 四川大学 | Method for vibration measurement of air specific heat ratio by piston in sealing cylinder |
| CN104237303A (en) * | 2014-09-30 | 2014-12-24 | 四川大学 | Method for measuring specific heat ratio of air through vibration of small ball |
| CN104237304A (en) * | 2014-09-30 | 2014-12-24 | 四川大学 | Method for testing specific heat ratio of air through piston oscillation in cylinder with one end sealed |
| CN104266931A (en) * | 2014-09-30 | 2015-01-07 | 四川大学 | Method for measuring specific heat capacity ratio of air by vibration of piston in drum with two sealed ends |
| CN104237061A (en) * | 2014-09-30 | 2014-12-24 | 四川大学 | Method for measuring air specific heat ratio via vibration of drumhead object |
| CN104297289A (en) * | 2014-10-28 | 2015-01-21 | 四川大学 | Improved device for measuring air specific heat ratio through adopting vibration method |
| CN104316560A (en) * | 2014-10-28 | 2015-01-28 | 四川大学 | Improved device for measuring air specific heat ratio through vibration method |
| CN104297289B (en) * | 2014-10-28 | 2016-08-31 | 四川大学 | Vibratory drilling method measures the improved device of air specific heat ratio |
| CN104849309A (en) * | 2015-05-25 | 2015-08-19 | 南京工业大学 | Intelligent tester and testing method for testing gas ratio and heat capacity ratio |
| CN105136606A (en) * | 2015-09-10 | 2015-12-09 | 河海大学 | Gas specific heat ratio measuring method and system thereof |
| CN107167398A (en) * | 2017-07-21 | 2017-09-15 | 曹元昊 | A kind of device and its measuring method for measuring Ratio of Specific Heats of Air |
| CN108872307A (en) * | 2018-07-30 | 2018-11-23 | 江苏理工学院 | A kind of Ratio of Specific Heats of Air experimental measurement system based on IoT technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20191218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |