CN2134650Y - Permeability gauge - Google Patents
Permeability gauge Download PDFInfo
- Publication number
- CN2134650Y CN2134650Y CN 92232964 CN92232964U CN2134650Y CN 2134650 Y CN2134650 Y CN 2134650Y CN 92232964 CN92232964 CN 92232964 CN 92232964 U CN92232964 U CN 92232964U CN 2134650 Y CN2134650 Y CN 2134650Y
- Authority
- CN
- China
- Prior art keywords
- gauge
- gas permeable
- model
- utility
- permeable vents
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a permeability gauge, comprising a vacuum pump, a Mcleod vacuum gauge, a gas manometer, a bladder tank, aeration chambers and a manometer of the aeration chamber. The utility model is an instrumentation used for measuring the air permeability of the plastic film, the lamina, the composite membrane and other polymeric materials. The upper chamber and lower chamber of the utility model is directly provided with the vacuum valve, and the aeration chambers are arranged on a supporting leg by two bearing pin and can be rotated. The utility model has the advantages of simple structure, convenient operation, high precision, low cost, etc.
Description
The utility model belongs to a kind of measurement plastic sheeting, thin slice, the novel ventilated instrument of polymeric material gas penetration potential aspects such as composite membrane.
As everyone knows, plastic package material all has certain gas penetration potential, and along with developing rapidly of packaging industry, the mensuration that the plastics gas penetration potential can be accurately measured in requirement seems more important.
Existing differential pressure method Permeability gauge does not cost an arm and a leg, and is exactly damaged easily, inconvenient operation, and be difficult to enter enterprise, and school, general R﹠D institution obtains penetration and promotion.
A kind of pressure detector of Permeability gauge is to use the electronic sensor matching computer, owing to need with extraordinary sensor, and cost an arm and a leg, general unit is difficult to buy owing to be subjected to restrict economically.
The pressure detector of most of Permeability gauges adopts mercury manometr, and mercury manometr is made of glass.Because the Permeability gauge design is unreasonable, damaged easily, and mercury to be poured or poured out into pressure gauge storage ball, need whole instrument to take inclination in one's arms, inconvenient operation, to keep gas permeable vents long period inner height vacuum simultaneously, vacuum tube be required very high, add the vacuum rubber pipe with the vacuum pipe of general material and be difficult to reach requirement.
In a word, it is satisfied that existing Permeability gauge all can not obtain the user well, and the utility model overcomes above-mentioned weak point exactly, and a kind of novel ventilated instrument of design.
The utility model is according to GB1038-70 plastic sheeting gas permeability test method; manufacture and design with reference to ISO2556-1974 standard and ASTM D1434-82M method and JIS K7128-1987 method; it is by vacuum pump; MaLeod gauge; gas gauge; bladder tank; gas permeable vents and gas permeable vents pressure gauge are formed; the gas permeable vents pressure gauge is also made pressure detector with mercury manometr; vacuum valve is directly installed with following chamber in the chamber on gas permeable vents; gas permeable vents is installed on the pillar with two bearing pins; around the gas permeable vents pressure gauge, add the pressure gauge protective cover simultaneously, prevent to make the Permeability gauge breakage, simultaneously because of operating because of carelessness; install scale in a side of pressure gauge protective cover, scale is pressed close to pressure gauge and is convenient to accuracy of reading
At a certain temperature, tested sample (as plastic sheeting) two sides keep certain gas differential pressure, gas sees through inchmeal owing to spread in film, low-pressure lateral pressure is little by little increased, when stable seeing through, pressure changes linear variation in time, thereby can obtain air transmission coefficient and Air permenbility.
The utlity model has simple in structurely, easy to operate, can keep gas permeable vents long period inner height vacuum (24 hours change less than 40Pa), measure accurately, characteristics such as cost is low.
Be further described below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of Permeability gauge
Fig. 2 is the structural representation of gas permeable vents in the Permeability gauge
In the drawings, 1 is MaLeod gauge; 2 is vacuum valve; 3 is gas permeable vents; 4 is bladder tank; 5 is vacuum hose; 6 is vacuum pump; 7 is base; 8 is the gas permeable vents pressure gauge; 9 is trip bolt; 10 are following chamber; 11 is last chamber; 12 is O-ring seal; 13 is sample; 14 is filter paper; 15 is dividing plate; 16 is scale; 17 is the pressure gauge guard shield; 18 is pillar.
When the polymkeric substance of solid (is a sample 13, sample can be a plastic sheeting) both sides air pressure not simultaneously, gas molecule can pass polymkeric substance and spread to the less another side of pressure on one side from the bigger sample of pressure, the gas permeation polymkeric substance is a kind of unimolecule diffusion process, this process is that gas is dissolved in earlier in the sample 13 of solid, spread to the low concentration place in sample 13 then, the another side at sample 13 evaporates at last.
When carrying out work, last chamber 11 and O-ring seal 12 require pressure even, and the mercury in the gas permeable vents pressure gauge 8 is all in the storage ball at this moment.Starting vacuum pump 6 is earlier to low-pressure side; The back vacuumizes the high pressure place, and the time of bleeding is regulated according to sample type and state (referring to vacuum tightness, temperature) and different.
Close the valve of the direct vacuum valve of installing 2 in chamber and following chamber on the gas permeable vents, to guarantee the manometric vacuum tightness of gas permeable vents and gas permeable vents, unclamp trip bolt 9, because gas permeable vents is installed on the pillar with two bearing pins, can slowly rotate after Permeability gauge makes the mercury impouring gas permeable vents pressure gauge 8 of storage in the ball, Permeability gauge resets, and tightens trip bolt 9, stops to vacuumize.In order to prevent accidentally the gas permeable vents pressure gauge to be damaged working pressure meter protective cover 17.
Import about 1 atmospheric test gas in last chamber; by the scale of installing in protective cover one side; can observe and write down in the gas permeable vents pressure gauge 8 mercury height situation over time immediately; up in the same time interval; the mercury height change is basicly stable; continue record three times, get arithmetic mean, off-test.
Claims (1)
- A kind of vacuum pump that comprises; MaLeod gauge; gas gauge; bladder tank; the Permeability gauge that gas permeable vents and gas permeable vents pressure gauge are formed is characterized in that vacuum valve is directly installed with following chamber in the chamber on the gas permeable vents, and gas permeable vents is installed on the pillar with two bearing pins; add the pressure gauge protective cover simultaneously around the gas permeable vents pressure gauge, a side of this pressure gauge protective cover is equipped with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92232964 CN2134650Y (en) | 1992-09-07 | 1992-09-07 | Permeability gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92232964 CN2134650Y (en) | 1992-09-07 | 1992-09-07 | Permeability gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2134650Y true CN2134650Y (en) | 1993-05-26 |
Family
ID=33775403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92232964 Expired - Fee Related CN2134650Y (en) | 1992-09-07 | 1992-09-07 | Permeability gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2134650Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012100631A1 (en) * | 2011-01-27 | 2012-08-02 | 中国商用飞机有限责任公司 | Testing apparatus for testing air permeability on thickness direction of plastic matrix, and method therefor |
| WO2012100630A1 (en) * | 2011-01-27 | 2012-08-02 | 中国商用飞机有限责任公司 | Testing apparatus for testing gas permeability on thickness direction of plastic matrix |
-
1992
- 1992-09-07 CN CN 92232964 patent/CN2134650Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012100631A1 (en) * | 2011-01-27 | 2012-08-02 | 中国商用飞机有限责任公司 | Testing apparatus for testing air permeability on thickness direction of plastic matrix, and method therefor |
| WO2012100630A1 (en) * | 2011-01-27 | 2012-08-02 | 中国商用飞机有限责任公司 | Testing apparatus for testing gas permeability on thickness direction of plastic matrix |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |