CN104458507A - Method for measuring surface tension coefficient of liquid by injecting liquid into round tank - Google Patents
Method for measuring surface tension coefficient of liquid by injecting liquid into round tank Download PDFInfo
- Publication number
- CN104458507A CN104458507A CN201410705744.3A CN201410705744A CN104458507A CN 104458507 A CN104458507 A CN 104458507A CN 201410705744 A CN201410705744 A CN 201410705744A CN 104458507 A CN104458507 A CN 104458507A
- Authority
- CN
- China
- Prior art keywords
- liquid
- circular groove
- aperture
- surface tension
- tension coefficient
- 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.)
- Granted
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention provides a method for measuring a surface tension coefficient of liquid by injecting the liquid into a round tank and relates to measurement of physical parameters. The round tank comprises two cylinders with the same center axis and a sealing bottom plate shared by the two cylinders, and a small hole is formed in the sealing bottom plate of the round tank. The round tank is put on a platform, the small hole of the round tank is suspended outside the platform, a measuring glass is put under the small hole, the liquid with the volume of Q1 is poured into the round tank, the round tank stands still until no liquid drops from the lower side of the small hole, the volume Q2 of the liquid in the measuring glass is read, the radius ro of the inside of the outer cylinder and the radius ri of the outside of the inner cylinder are measured, and the surface tension coefficient of the liquid is sigma=[rho*(Q1-Q2)*g]/[2pi*(ro+ri)]. The method has the beneficial effects that if the measurement precision of mass or volume is high enough, the largest error of a device is gravity generated by mass of a liquid drop, so the error is small; the structure is simple and the cost is low.
Description
Technical field
The present invention relates to the measurement of the measurement of physical parameter, particularly liquid surface tension coefficient.
Background technology
The method measuring liquid surface tension coefficient common are: largest air bubbles platen press, capillary tube technique, Pulling escape etc., measuring method or device more complicated, such as largest air bubbles platen press, Pulling escape; The precision measured is not high, although capillary tube technique is simple, but liquid level bends, the insufficient height measuring fluid column is accurate, because the liquid level outside kapillary also rises along the tube wall outside kapillary, therefore, more difficult at the coordinate figure of the horizontal level determining liquid level, thus cause the difference in height of the fluid column determined inside kapillary more difficult.
Summary of the invention
The present invention proposes a kind of novel method for surface tension measurement.
Technical scheme of the present invention is:
The structure of measurement mechanism: circular groove is made up of the seal base that two cylinders and with identical central axis are shared, the top of the outside of inner cylinder, the inner side of out cylinder and seal base forms the useful space of circular groove, the seal base of circular groove has an aperture, and aperture is through hole.
Measuring method 1: circular groove is placed on a table top, table top has spirit bubble, base has level(l)ing device, the aperture of circular groove is outer unsettled at table top, a measuring cup is placed in the below of aperture, getting a certain amount of liquid pours in circular groove, if the volume of liquid is Q1, the amount of this liquid will ensure have liquid to drip below aperture, when not having liquid to drip below standing aperture by the time, read from the measuring cup below aperture the volume Q2 being dropped in the liquid measuring cup from aperture, measure out cylinder inner radius r
outwardwith inner cylinder outer radius r
in, then liquid surface tension coefficient is σ=[ρ * (Q1-Q2) * g]/[2 π * (r
outward+ r
in)], wherein σ is liquid surface tension coefficient, and ρ is the density of liquid, and g is acceleration of gravity, and π is circular constant.
Measuring method 2: measure out cylinder inner radius r
outwardwith inner cylinder outer radius r
in, then, circular groove is placed on the measurement table top of an electronic balance, align with measurement table top center in circular groove center, the base of balance is regulated to make the spirit bubble of balance be designated as horizontality, its aperture is outer unsettled at measurement table top, record circular groove inside does not have quality m1 during liquid, a measuring cup is placed in the below of aperture, getting a certain amount of liquid pours in circular groove, the amount of this liquid will ensure have liquid to drip below aperture, when not having liquid to drip below standing aperture by the time, the gross mass m2 of the liquid that record circular groove and circular groove inside adhere to, then liquid surface tension coefficient is σ=[(m2-m1) * g]/[2 π * (r
outward+ r
in)], wherein σ is liquid surface tension coefficient, and g is acceleration of gravity, and π is circular constant.
The invention has the beneficial effects as follows: at circular groove interior surface tension force adsorptive liquid, exceed the liquid part of surface tension adsorptive power, ooze out from small hole at bottom part, drop is formed below aperture, along with oozing out gradually of liquid, what be greater than that drop contacts with lower surface in the weight of drop one encloses the surface tension (σ * L) that (setting girth as L) produce, and drop is by the measuring cup that is dropped in below aperture; When circular groove interior surface tension force can adsorb the weight of all liq of circular groove inside, stopping is oozed out by liquid, no longer including fluid drips drops in measuring cup below aperture or other container, state now below aperture is smooth or has a drop poised, therefore, if the precision of measurement quality or volume is enough high, then the maximum error of this device is exactly the gravity that the quality of a drop produces, so error is less; Surface tension adsorptive liquid quality can being multiplied obtains with volume (obtaining from the change of graduated cylinder volume) by the density of liquid (looking into temperature and density mapping table), also can directly measure by balance the increment obtaining its quality and obtain; Measurement mechanism structure is simple, measures with low cost.
Accompanying drawing explanation
Fig. 1 is circular groove schematic diagram, and Fig. 2 is circular groove elevational schematic.
Wherein, 1, circular groove, 2, aperture, r
outward, out cylinder inner radius, r
in, inner cylinder outer radius.
Embodiment
Circular groove 1 is made up of the seal base that two cylinders and with identical central axis are shared, the top of the outside of inner cylinder, the inner side of out cylinder and seal base forms the space of circular groove 1, the seal base of circular groove 1 has an aperture 2, and aperture 2 is through hole; Circular groove 1 is placed on a table top that (table top has spirit bubble, base has level(l)ing device), its aperture 2 is outer unsettled at table top, place a measuring cup in the below of aperture 2, get a certain amount of liquid and pour in circular groove 1, if the volume of liquid is Q1, the amount of this liquid will ensure that the below of aperture 2 has liquid to drip, when not having liquid to drip below standing aperture 2 by the time, read from measuring cup the volume Q2 being dropped in the liquid measuring cup from aperture 2, measure out cylinder inner radius r
outwardwith inner cylinder outer radius r
in, the numerical value of radius also can obtain by measuring diameter, then liquid surface tension coefficient is σ=[ρ * (Q1-Q2) * g]/[2 π * (r
outward+ r
in)], wherein σ is liquid surface tension coefficient, and ρ is the density (can density meter that environmentally temperature consults this liquid obtain) of liquid, and g is acceleration of gravity, and π is circular constant.
Also circular groove 1 can be placed on (aliging with measurement table top center in circular groove 1 center) on the measurement table top of an electronic balance, the base of balance is regulated to make the spirit bubble of balance be designated as horizontality, balance generally has spirit bubble, its base has level adjuster, and the aperture 2 of circular groove 1 is at outer unsettled (the diameter r of measurement table top
outwardbe greater than the radius R measuring table top, such as r
outward=2R just may realize), the quality m1 of record circular groove 1, a measuring cup or other container is placed in the below of aperture 2, getting a certain amount of liquid pours in circular groove 1, the amount of this liquid will ensure that the below of aperture 2 has liquid to drip, when not having liquid to drip below standing aperture 2 by the time, the gross mass m2 of the liquid that record circular groove 1 and circular groove 1 inside adhere to, then liquid surface tension coefficient is σ=[(m2-m1) * g]/[2 π * (r
outward+ r
in)], wherein σ is liquid surface tension coefficient, and g is acceleration of gravity, and π is circular constant.
Claims (2)
1. the method for injection liquid bulk measurement liquid surface tension coefficient in circular groove, it is characterized in that: circular groove is made up of the seal base that two cylinders and with identical central axis are shared, the top of the outside of inner cylinder, the inner side of out cylinder and seal base forms the useful space of circular groove, the seal base of circular groove has an aperture, and aperture is through hole; Circular groove is placed on a table top, table top has spirit bubble, base has level(l)ing device to make table-surface level, the aperture of circular groove is outer unsettled at table top, a measuring cup is placed in the below of aperture, getting a certain amount of liquid pours in circular groove, if the volume of liquid is Q1, the amount of this liquid will ensure have liquid to drip below aperture, when not having liquid to drip below standing aperture by the time, read from the measuring cup below aperture the volume Q2 being dropped in the liquid measuring cup from aperture, measure out cylinder inner radius r
outwardwith inner cylinder outer radius r
in, then liquid surface tension coefficient is σ=[ρ * (Q1-Q2) * g]/[2 π * (r
outward+ r
in)], wherein σ is liquid surface tension coefficient, and ρ is the density of liquid, and g is acceleration of gravity, and π is circular constant.
2. the method for injection liquid bulk measurement liquid surface tension coefficient in the circular groove simplified, it is characterized in that: circular groove is made up of the seal base that two cylinders and with identical central axis are shared, the top of the outside of inner cylinder, the inner side of out cylinder and seal base forms the useful space of circular groove, the seal base of circular groove has an aperture, and aperture is through hole, measure out cylinder inner radius r
outwardwith inner cylinder outer radius r
in, circular groove is placed on the measurement table top of an electronic balance, align with measurement table top center in circular groove center, the base of electronic balance is regulated to make the spirit bubble of balance be designated as horizontality, its aperture is outer unsettled at measurement table top, record circular groove inside does not have quality m1 during liquid, a measuring cup or other container is placed in the below of aperture, getting a certain amount of liquid pours in circular groove, the amount of this liquid will ensure have liquid to drip below aperture, when not having liquid to drip below standing aperture by the time, the gross mass m2 of the liquid that record circular groove and circular groove inside adhere to, then liquid surface tension coefficient is σ=[(m2-m1) * g]/[2 π * (r
outward+ r
in)], wherein σ is liquid surface tension coefficient, and g is acceleration of gravity, and π is circular constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410705744.3A CN104458507B (en) | 2014-12-01 | 2014-12-01 | The method injecting liquid measure liquid surface tension coefficient in circular groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410705744.3A CN104458507B (en) | 2014-12-01 | 2014-12-01 | The method injecting liquid measure liquid surface tension coefficient in circular groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104458507A true CN104458507A (en) | 2015-03-25 |
| CN104458507B CN104458507B (en) | 2016-09-28 |
Family
ID=52904918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410705744.3A Expired - Fee Related CN104458507B (en) | 2014-12-01 | 2014-12-01 | The method injecting liquid measure liquid surface tension coefficient in circular groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104458507B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596350A (en) * | 2016-12-13 | 2017-04-26 | 常州大学 | Bracket for measuring surface tension of liquid by use of double liquid surfaces of pore plate and measurement method |
| CN110927022A (en) * | 2019-11-20 | 2020-03-27 | 四川大学 | Method for measuring surface tension coefficient of liquid |
| CN114324071A (en) * | 2021-12-31 | 2022-04-12 | 四川大学 | Method for measuring surface tension coefficient of liquid by breaking liquid drops |
| CN114324072A (en) * | 2022-01-17 | 2022-04-12 | 四川大学 | Method for measuring surface tension coefficient of liquid by thin plate method |
| CN114383979A (en) * | 2022-01-21 | 2022-04-22 | 四川大学 | Method for measuring surface tension coefficient of liquid by liquid drop method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089635U (en) * | 1991-03-21 | 1991-11-27 | 北京大学 | Surface tension measuring device by volume |
| JPH1019754A (en) * | 1996-07-05 | 1998-01-23 | Yoshinobu Abe | Device for measuring surface tension of molten metal |
| JP2004129113A (en) * | 2002-10-07 | 2004-04-22 | Aiphone Co Ltd | Drain structure of doorphone slave unit |
| CN102636416A (en) * | 2012-04-13 | 2012-08-15 | 四川大学 | Automatic horizontal hanging ring for measuring surface tension of liquid by using abruption method |
| CN203324142U (en) * | 2013-07-05 | 2013-12-04 | 浙江农林大学 | Liquid surface tension coefficient tester based on droplet contrast method |
-
2014
- 2014-12-01 CN CN201410705744.3A patent/CN104458507B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089635U (en) * | 1991-03-21 | 1991-11-27 | 北京大学 | Surface tension measuring device by volume |
| JPH1019754A (en) * | 1996-07-05 | 1998-01-23 | Yoshinobu Abe | Device for measuring surface tension of molten metal |
| JP2004129113A (en) * | 2002-10-07 | 2004-04-22 | Aiphone Co Ltd | Drain structure of doorphone slave unit |
| CN102636416A (en) * | 2012-04-13 | 2012-08-15 | 四川大学 | Automatic horizontal hanging ring for measuring surface tension of liquid by using abruption method |
| CN203324142U (en) * | 2013-07-05 | 2013-12-04 | 浙江农林大学 | Liquid surface tension coefficient tester based on droplet contrast method |
Non-Patent Citations (3)
| Title |
|---|
| 吴本科: "细圆柱滴重法测液体的表面张力系数", 《物理通报》 * |
| 王世亮 等: "用电子天平测定液体表面张力系数结果的分析", 《大学物理》 * |
| 罗兴垅 等: "用电子分析天平测量液体的表面张力系数", 《赣南师范学院学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596350A (en) * | 2016-12-13 | 2017-04-26 | 常州大学 | Bracket for measuring surface tension of liquid by use of double liquid surfaces of pore plate and measurement method |
| CN110927022A (en) * | 2019-11-20 | 2020-03-27 | 四川大学 | Method for measuring surface tension coefficient of liquid |
| CN114324071A (en) * | 2021-12-31 | 2022-04-12 | 四川大学 | Method for measuring surface tension coefficient of liquid by breaking liquid drops |
| CN114324072A (en) * | 2022-01-17 | 2022-04-12 | 四川大学 | Method for measuring surface tension coefficient of liquid by thin plate method |
| CN114383979A (en) * | 2022-01-21 | 2022-04-22 | 四川大学 | Method for measuring surface tension coefficient of liquid by liquid drop method |
| CN114383979B (en) * | 2022-01-21 | 2023-05-02 | 四川大学 | Method for measuring surface tension coefficient of liquid by liquid drop method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104458507B (en) | 2016-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104458507A (en) | Method for measuring surface tension coefficient of liquid by injecting liquid into round tank | |
| CN105051518B (en) | Viscosity measurement and viscosimeter | |
| EA013768B1 (en) | Liquid level and density measurement device | |
| CN204027960U (en) | Block ore density measurement device | |
| CN202255522U (en) | Irregular object volume measurement device | |
| CN103344542A (en) | Device for measuring permeability coefficient by variable head method | |
| CN105021496A (en) | Density measuring apparatus with tiny error | |
| CN108169066A (en) | A kind of assay method of bread specific volume | |
| CN204963890U (en) | Liquid level of simultaneous measurement liquid and device of proportion | |
| CN104390888B (en) | Hollow cylinder discharging liquid measures the method for liquid surface tension coefficient | |
| CN104406890B (en) | Hollow cylinder discharging liquid measures the method for liquid surface tension coefficient | |
| CN204720049U (en) | Archimedes principle demonstrator | |
| CN202109964U (en) | Liquid proportion spring balance | |
| CN205300691U (en) | Total volume measuring device of wet -type rock core | |
| CN104406889B (en) | The method that the porose hemispherical Shell discharging liquid in bottom measures liquid surface tension coefficient | |
| CN208688942U (en) | Water buoyancy formula liquid density measurement experimental provision | |
| RU2559175C1 (en) | Method of determination of density of solid materials and device for its implementation | |
| CN211825543U (en) | Solid density measuring device | |
| CN211024895U (en) | Water-based fire extinguisher filling equipment and adjustable volume metering container | |
| CN208780299U (en) | High-precision volume measurement device | |
| CN203869982U (en) | Foamed concrete foaming agent performance detection device | |
| CN103969142A (en) | Detection device for performances of foam concrete foaming agent and operation method thereof | |
| CN102135489B (en) | Method for determining liquid viscosity coefficient | |
| CN101718768A (en) | Titrator metered according to mass unit | |
| CN103344522A (en) | Liquid density measurement method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20160928 Termination date: 20171201 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |