CN105717022A - Differential-pressure-method gas transmittance tester - Google Patents
Differential-pressure-method gas transmittance tester Download PDFInfo
- Publication number
- CN105717022A CN105717022A CN201610066948.6A CN201610066948A CN105717022A CN 105717022 A CN105717022 A CN 105717022A CN 201610066948 A CN201610066948 A CN 201610066948A CN 105717022 A CN105717022 A CN 105717022A
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- Prior art keywords
- pressure
- pressure differential
- permeation rate
- differential method
- processor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
Abstract
The invention relates to the technical field of barrier property detection, in particular to a differential-pressure-method gas transmittance tester. The differential-pressure-method gas transmittance tester mainly comprises a processor, a memorizer, a display terminal and at least one testing cavity. The processor is connected with the memorizer and the display terminal. Each testing cavity is divided into an upper cavity and a lower cavity through a sample, wherein a closed space is formed between the upper cavity and the sample, and a closed space is formed between the lower cavity and the sample. Testing gas is injected into the upper cavities connected with a pressure sensor, the pressure sensor is connected with the processor, and the lower cavities are connected with a vacuumizing unit and a pressure gage. The tester is simple in structure and easy and convenient to operate. The differential pressure keeps constant, testing data is accurate, the tester can test gases with different attributes, test high-resistance samples and low-resistance samples and achieve testing of the multiple testing cavities, cost is saved, and the testing efficiency is high.
Description
Technical field
The present invention relates to barrier detection technique field, particularly relate to a kind of pressure differential method gas permeation rate analyzer.
Background technology
Food and medicine are the healthy closely bound up commodity with people, it is pleasant that the packaging of these type of commodity does not require nothing more than good looking appearance, convenient and practical, it is often more important that to guarantee that content has stable, reliable quality in shelf life, it is prevented that the decomposition caused due to the moisture absorption, gas leakage and illumination is gone bad.Therefore, the packaging with barrier function is selected to be to ensure that the key of food and drug safety.The barrier of packaging material is for specific permeable object, permeable object includes common gas, water vapour, liquid, Organic substance etc., refers to that specific permeable object is penetrated through the barrier property arriving opposite side (be usually and penetrated through material entrance low concentration side by high concentration side) by material by its side.Narrow sense, including oxygen-barrier property and water vapor barrier.Because the fat in food and protein, the effective ingredient in medicine is susceptible to hydrolysis, variable color under steam existence condition, goes bad, even produces toxicity, so the detection for food and drug packing material steam breathability has very important significance.
Existing pressure differential method permeability meter, there is no pressurize difference function, owing in test process, the gas of test chamber epicoele arrives cavity of resorption thoroughly, the air pressure making upper and lower cavity changes, affect pressure reduction, test result is inaccurate, and the identical sample result difference of instrument detection that each manufacturer production is out is very big, it does not have unified definite value.Deoxygenation gas, nitrogen, other gases can not be detected outside carbon dioxide, can not detect for high barrier sample, the scope of application is little.
Summary of the invention
For the deficiency that prior art exists, it is an object of the invention to provide a kind of guarantee and stablize pressure reduction, pressure differential method gas permeation rate analyzer applied widely.
For achieving the above object, the present invention can be achieved by the following technical programs:
Pressure differential method gas permeation rate analyzer, including processor, memorizer, display terminal and at least one test chamber, described processor is connected with memorizer and display terminal respectively, each described test chamber is all divided into epicoele and cavity of resorption by sample, closing space it is respectively formed between described epicoele and sample, between described cavity of resorption and sample, described epicoele passes into test gas and is connected with pressure transducer, and described pressure transducer is connected with processor, and described cavity of resorption is connected with vacuum extractor and is connected with Pressure gauge.
Further, also including gas cylinder, described test gas filling is in gas cylinder, and described gas cylinder is connected with epicoele.
Further, described gas cylinder is connected with epicoele by pipeline.
Further, described pipeline is provided with the electromagnetic valve being connected with processor.
Further, also including heater, test chamber is heated by described heater.
Further, the mode of heating of described heater is electromagnetic temperature-controlltea.
Further, the outer wall of described test chamber is provided with heat-insulation layer.
Further, described heat-insulation layer adopts thermal insulation foaming agent, and forms integral structure with described test chamber.
Further, described vacuum means is set to vacuum pump.
Further, described processor is ARM microprocessor.
Present configuration is simple, easy and simple to handle, and pressure reduction keeps constant, and test data are accurate, it is possible to the gas of test different attribute, it is possible to detection high-barrier sample and low-resistance are every sample, moreover it is possible to realize multiple test chamber and test simultaneously, saves cost, and testing efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the circuit part structure chart of the present invention；
In figure: 1-processor, 2-memorizer, 3-display terminal, 4-pressure transducer, 5-test chamber, 51-epicoele, 52-cavity of resorption, 6-sample, 7-gas cylinder, 8-pipeline, 9-electromagnetic valve, 10-vacuum extractor, 11-Pressure gauge.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is further illustrated:
As shown in Fig. 1～2, pressure differential method gas permeation rate analyzer of the present invention, mainly include processor 1, memorizer 2, display terminal 3, at least one test chamber 5, gas cylinder 7 and vacuum extractor 10 etc..Concrete, processor 1 is connected with memorizer 2 and display terminal 3 respectively, and each test chamber 5 is all divided into epicoele 51 and cavity of resorption 52 by sample 6, is respectively formed closing space between epicoele 51 and sample 6, between cavity of resorption 52 and sample 6.Epicoele 51 passes into test gas and is connected with pressure transducer 4, and pressure transducer 4 is connected with processor 1, and the pressure information of the epicoele 51 control measured is sent to processor 1；Cavity of resorption 52 is connected with vacuum extractor 10 and is connected with Pressure gauge 11, and the pressure of cavity of resorption 52 measured by Pressure gauge 11.Test gas filling is in gas cylinder 7, and gas cylinder 7 is connected with all epicoeles 51.Preferably, gas cylinder 7 is connected with epicoele 51 by pipeline 8, and every pipeline 8 is provided with the electromagnetic valve 9 being connected with processor 1, and electromagnetic valve 9 is controlled to open and close by processor 1.
In order to reduce the test error caused by temperature, use heater that test chamber 5 is heated.Preferably, the mode of heating of heater is electromagnetic temperature-controlltea, and temperature control is more accurate, in hgher efficiency, speed faster, temperature-controlled precision 0.1 degree.The outer wall of test chamber 5 is provided with heat-insulation layer, keeps the temperature in test chamber 5, and heat-insulation layer adopts thermal insulation foaming agent, and forms integral structure with test chamber 5.
Preferably, vacuum extractor 10 is vacuum pump.
Preferably, processor 1 is ARM microprocessor.ARM9 microprocessor is 32 risc processors of low-power consumption, has a characteristic that have embedded ICE RT logic, and debugging exploitation is convenient；Power consumption is extremely low；Three class pipeline structure can be provided；The Thumb instruction set of code density height compatibility 16；Support to include the operating system of WindowsCE, Linux, PalmOS etc.；Instruction system is compatible with ARM9E series and ARM10E series, it is simple to the upgrading of product.ARM microprocessor is the core component of whole system, and major function is for controlling each functional module normal operation, it is achieved that the real-time tracking of sample information is shown, efficiently solves information transmission delay problem.
The present invention utilizes the principle design of pressure differential method, the sample 6 anticipated is placed between epicoele 51 and cavity of resorption 52, a constant pressure reduction is formed in the both sides of sample 6, gas is under the effect of pressure reduction, being permeated to low pressure chamber by thin film by high pressure chest, the pressure change of monitoring low pressure chamber can calculate the obstruct parameter of institute's test specimens.
In test process, the gas flow of epicoele 51 reduces, and pressure changes, and pressure transducer 4 sends a signal to processor；The gas flow of cavity of resorption 52 increases, pressure change is shown on Pressure gauge 11, therefore the pressure reduction of test chamber 5 changes, now processor 1 control electromagnetic valve 9 aerating enter epicoele 51 reach setting pressure, cavity of resorption 52 reaches setting value by vacuum extractor 10 evacuation, so repeatedly runs and keeps the pressure of test chamber 5 to keep constant.
For a person skilled in the art, according to above technical scheme and design, other various corresponding changes and deformation can be made, and all these change and deforms within the protection domain that all should belong to the claims in the present invention.
Claims (10)
1. pressure differential method gas permeation rate analyzer, it is characterized in that: include processor, memorizer, display terminal and at least one test chamber, described processor is connected with memorizer and display terminal respectively, each described test chamber is all divided into epicoele and cavity of resorption by sample, closing space it is respectively formed between described epicoele and sample, between described cavity of resorption and sample, described epicoele passes into test gas and is connected with pressure transducer, described pressure transducer is connected with processor, and described cavity of resorption is connected with vacuum extractor and is connected with Pressure gauge.
2. pressure differential method gas permeation rate analyzer according to claim 1, it is characterised in that: also including gas cylinder, described test gas filling is in gas cylinder, and described gas cylinder is connected with epicoele.
3. pressure differential method gas permeation rate analyzer according to claim 2, it is characterised in that: described gas cylinder is connected with epicoele by pipeline.
4. pressure differential method gas permeation rate analyzer according to claim 3, it is characterised in that: described pipeline is provided with the electromagnetic valve being connected with processor.
5. pressure differential method gas permeation rate analyzer according to claim 1, it is characterised in that: also including heater, test chamber is heated by described heater.
6. pressure differential method gas permeation rate analyzer according to claim 5, it is characterised in that: the mode of heating of described heater is electromagnetic temperature-controlltea.
7. the pressure differential method gas permeation rate analyzer according to claim 5 or 6, it is characterised in that: the outer wall of described test chamber is provided with heat-insulation layer.
8. pressure differential method gas permeation rate analyzer according to claim 7, it is characterised in that: described heat-insulation layer adopts thermal insulation foaming agent, and forms integral structure with described test chamber.
9. pressure differential method gas permeation rate analyzer according to claim 1, it is characterised in that: described vacuum means is set to vacuum pump.
10. pressure differential method gas permeation rate analyzer according to claim 1, it is characterised in that: described processor is ARM microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610066948.6A CN105717022A (en) | 2016-01-29 | 2016-01-29 | Differential-pressure-method gas transmittance tester |
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| CN201610066948.6A CN105717022A (en) | 2016-01-29 | 2016-01-29 | Differential-pressure-method gas transmittance tester |
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| CN105717022A true CN105717022A (en) | 2016-06-29 |
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| CN201610066948.6A Pending CN105717022A (en) | 2016-01-29 | 2016-01-29 | Differential-pressure-method gas transmittance tester |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843532A (en) * | 2016-09-21 | 2018-03-27 | 希悦尔（中国）有限公司 | A kind of film micropore ventilation property test device |
| CN108344674A (en) * | 2017-01-25 | 2018-07-31 | 济南思克测试技术有限公司 | A kind of gas permeation rate Auto-Test System and method based on artificial intelligence |
| CN109596458A (en) * | 2019-01-28 | 2019-04-09 | 河南核信恒达实业有限公司 | A kind of low permeable membrane Air permenbility rapid detection system and detection method |
| CN112881256A (en) * | 2020-12-30 | 2021-06-01 | 浙江汇力胶囊有限公司 | Oxygen permeability detection device of hollow capsule |
| CN109596458B (en) * | 2019-01-28 | 2024-04-30 | 河南核信恒达实业有限公司 | Rapid detection system and detection method for low permeability of permeable membrane |
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2016
- 2016-01-29 CN CN201610066948.6A patent/CN105717022A/en active Pending
Patent Citations (6)
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| US20070295057A1 (en) * | 2004-03-04 | 2007-12-27 | Andrew Tipler | Methods and Systems for Characterizing a Sorbent Tube |
| CN101975720A (en) * | 2010-11-05 | 2011-02-16 | 济南兰光机电技术有限公司 | Equal-pressure method gas transmission rate testing system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843532A (en) * | 2016-09-21 | 2018-03-27 | 希悦尔（中国）有限公司 | A kind of film micropore ventilation property test device |
| CN108344674A (en) * | 2017-01-25 | 2018-07-31 | 济南思克测试技术有限公司 | A kind of gas permeation rate Auto-Test System and method based on artificial intelligence |
| CN108344674B (en) * | 2017-01-25 | 2023-12-26 | 济南思克测试技术有限公司 | Automatic gas permeability testing system and method based on artificial intelligence |
| CN109596458A (en) * | 2019-01-28 | 2019-04-09 | 河南核信恒达实业有限公司 | A kind of low permeable membrane Air permenbility rapid detection system and detection method |
| CN109596458B (en) * | 2019-01-28 | 2024-04-30 | 河南核信恒达实业有限公司 | Rapid detection system and detection method for low permeability of permeable membrane |
| CN112881256A (en) * | 2020-12-30 | 2021-06-01 | 浙江汇力胶囊有限公司 | Oxygen permeability detection device of hollow capsule |
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Application publication date: 20160629 |