CN200950116Y - Liquid surface tension coefficient measuring instrument - Google Patents
Liquid surface tension coefficient measuring instrument Download PDFInfo
- Publication number
- CN200950116Y CN200950116Y CN 200620051680 CN200620051680U CN200950116Y CN 200950116 Y CN200950116 Y CN 200950116Y CN 200620051680 CN200620051680 CN 200620051680 CN 200620051680 U CN200620051680 U CN 200620051680U CN 200950116 Y CN200950116 Y CN 200950116Y
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- China
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- liquid
- measuring instrument
- surface tension
- metal frame
- glass dish
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- Expired - Fee Related
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Abstract
A liquid surface tension tester is essentially applied in physics experiment teaching in colleges and includes a force sensor, a metal frame, a glass dish, a lift table, a micrometer, a post, a base and a measuring instrument. The force sensor is connected with the measuring instrument by a cable, the metal frame hanging on the force sensor. The glass dish holds the liquid to be tested and put on the lift table; the lift table is positioned on the measuring anvil of the micrometer, capable of adjusting the movement of the lift table by adjusting the micrometer, so as to adjust changes of the liquid level in the glass dish. The utility model determines the height of the liquid film based on difference of reading of the micrometer and obtains the mass of the liquid film based on the width and thickness of the metal frame; meanwhile, the measuring instrument determines the maximum tension when the liquid film is torn, so as to accurately measure the surface tension of the liquid.
Description
Affiliated technical field
The utility model relates to a kind of Measurement of liquid surface tension coefficient instrument, is mainly used in big, special secondary school universities and colleges physics experiment teaching.
Background technology
Liquid surface tension coefficient is an important parameter of performance liquid property, and measuring liquid surface tension coefficient has several different methods, as maximum bubble pressure method, flat band method (also claiming Laplce's method) capillary tube technique, pull method, weighing scale to test twisting force method etc.The method of pulling is directly to measure the surface tension of liquid with weighing apparatus, and measuring method is directly perceived, and clear concept is a common method of measuring surface tension of liquid.Survey the surface tension coefficient of liquid with pulling method, crux is a quality of accurately measuring small tension force with the liquid film of being pulled out of liquid surface, traditional method is to survey the small tension force of liquid surface with Joly balance, along with development of science and technology, new force-sensing sensor can satisfy the needs of measuring the small tension force of liquid surface fully, and highly sensitive, good stability, but digital signal shows, and can realize calculating in real time and measure, therefore, it has been widely used in surveying the small tension force of liquid surface.But no matter be traditional Joly balance, still new force-sensing sensor is all just measured surface tension of liquid, and is not measured the quality of the liquid film of being pulled out, and therefore, measures liquid surface tension coefficient and exists bigger error.
Summary of the invention
For solve existing instrument not energy measurement pull out the deficiency of liquid film quality, the utility model provides a kind of Measurement of liquid surface tension coefficient instrument, this analyzer can not only accurately be measured the small tension force of liquid surface, and can measure the quality of the liquid film of being pulled out, thereby the true surface tension coefficient of locating tab assembly liquid.
The technical scheme that its technical matters that solves the utility model adopts is: it contains force-sensing sensor, metal frame, glass dish, lifting table, milscale, pillar, base, measuring instrument.Force-sensing sensor links to each other with measuring instrument by cable.Metal frame hangs on the force-sensing sensor.Glass dish is contained testing liquid, places on the lifting table, and lifting table places on the measurement anvil of milscale, by the lifting of adjusting milscale scalable lifting table, thus the lifting of liquid level in the adjusting glass dish.When the inside casing coboundary of the metal frame on hanging over force-sensing sensor just overlaps with liquid level, can read the initial reading of milscale, when regulating milscale liquid level is descended, the liquid film of metal frame inside casing is pulled out liquid level gradually, until pulling open, at this moment, can measure the height of liquid film by the difference of reading of milscale, can obtain the quality of liquid film according to the thickness of the width of metal frame inside casing and metal frame, simultaneously, maximum tension in the time of can measuring liquid film and pull open by measuring instrument reaches the purpose of the accurate measurement liquid performance coefficient of tension.
The beneficial effects of the utility model are, utilize the lifting of milscale, measuring the capillary while of liquid film, measure the quality of liquid film easily, thereby measure the surface tension coefficient of liquid exactly, simple, easy row.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
1. force-sensing sensors among the figure, 2. metal frame, 3. glass dish, 4. lifting table, 5. milscale, 6. base, 7. cable, 8. pillar, 9. measuring instrument.
Embodiment
In Fig. 1, be fixed with column (8) on the base (6), force-sensing sensor (1), milscale (5) are separately fixed on the pillar (8), metal frame (2) hangs on the force-sensing sensor (1), power-the electric signal of force-sensing sensor (1) links to each other with measuring instrument (9) by cable (7), measure the size of power by measuring instrument (9), regulate milscale and can make the liquid surface lifting that places lifting table (4) upper glass ware (3), when the coboundary of metal frame (2) inside casing just overlaps with liquid level, can read the initial reading L of milscale (5)
1, to regulate milscale (5) liquid level is descended, the liquid film of metal frame inside casing is pulled out liquid level gradually, and until pulling open, at this moment, the reading of milscale (5) is L2, and then the height of liquid film is h=L
2-L
1The quality of liquid film is m=abh ρ, in the formula, a is the width of metal frame (2) inside casing, b is the thickness of metal frame (2), ρ is a density of liquid, g is local acceleration of gravity, simultaneously, the maximum tension in the time of can measuring liquid film and pull open by measuring instrument (9) is f=F-abh ρ g, according to α=(F-abh ρ g)/(2a+2b), can obtain the surface tension coefficient of liquid, in the formula, F is force-sensing sensor (a 1) indicating value power, it be suffered surface tension of metal frame (2) and metal frame (2) the making a concerted effort of the suffered gravity of the liquid film that attaches.
Claims (1)
1. Measurement of liquid surface tension coefficient instrument, it contains force-sensing sensor, metal frame, glass dish, lifting table, milscale, pillar, base, measuring instrument, force-sensing sensor links to each other with measuring instrument by cable, metal frame hangs on the force-sensing sensor, glass dish is contained testing liquid, places on the lifting table, and it is characterized in that: lifting table places on the measurement anvil of milscale, regulate the lifting of lifting table by regulating milscale, thereby regulate the lifting of liquid level in the glass dish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620051680 CN200950116Y (en) | 2006-07-18 | 2006-07-18 | Liquid surface tension coefficient measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620051680 CN200950116Y (en) | 2006-07-18 | 2006-07-18 | Liquid surface tension coefficient measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200950116Y true CN200950116Y (en) | 2007-09-19 |
Family
ID=38892657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620051680 Expired - Fee Related CN200950116Y (en) | 2006-07-18 | 2006-07-18 | Liquid surface tension coefficient measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200950116Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887002A (en) * | 2009-05-12 | 2010-11-17 | 强晓明 | Liquid surface tension coefficient measuring apparatus |
| CN102520122A (en) * | 2011-12-09 | 2012-06-27 | 中国石油天然气股份有限公司 | Device for producing liquid film capable of adjusting thickness |
| CN102636417A (en) * | 2012-04-13 | 2012-08-15 | 四川大学 | Leakage and pulling-out device for measuring liquid surface tension coefficient by pulling-off method |
| CN105092427A (en) * | 2015-08-20 | 2015-11-25 | 哈尔滨工业大学（威海） | Adhesive force measurement method and device |
| CN107228811A (en) * | 2017-05-23 | 2017-10-03 | 福建师范大学 | The measuring method of liquid surface tension coefficient based on real-time measurement and data fitting |
-
2006
- 2006-07-18 CN CN 200620051680 patent/CN200950116Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887002A (en) * | 2009-05-12 | 2010-11-17 | 强晓明 | Liquid surface tension coefficient measuring apparatus |
| CN102520122A (en) * | 2011-12-09 | 2012-06-27 | 中国石油天然气股份有限公司 | Device for producing liquid film capable of adjusting thickness |
| WO2013082949A1 (en) * | 2011-12-09 | 2013-06-13 | 中国石油天然气股份有限公司 | Liquid film producing apparatus and apparatus for measuring dilatational viscoelasticity of liquid film |
| CN102520122B (en) * | 2011-12-09 | 2014-07-23 | 中国石油天然气股份有限公司 | Device for producing liquid film capable of adjusting thickness |
| CN102636417A (en) * | 2012-04-13 | 2012-08-15 | 四川大学 | Leakage and pulling-out device for measuring liquid surface tension coefficient by pulling-off method |
| CN105092427A (en) * | 2015-08-20 | 2015-11-25 | 哈尔滨工业大学（威海） | Adhesive force measurement method and device |
| CN107228811A (en) * | 2017-05-23 | 2017-10-03 | 福建师范大学 | The measuring method of liquid surface tension coefficient based on real-time measurement and data fitting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 Termination date: 20110718 |