CN203299088U - Temperature controlled determinator for liquid surface tension coefficients - Google Patents
Temperature controlled determinator for liquid surface tension coefficients Download PDFInfo
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- CN203299088U CN203299088U CN2013203767707U CN201320376770U CN203299088U CN 203299088 U CN203299088 U CN 203299088U CN 2013203767707 U CN2013203767707 U CN 2013203767707U CN 201320376770 U CN201320376770 U CN 201320376770U CN 203299088 U CN203299088 U CN 203299088U
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- surface tension
- liquid surface
- suspension ring
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Abstract
The utility model discloses a temperature controlled determinator for liquid surface tension coefficients. According to the technical scheme, the temperature controlled determinator for the liquid surface tension coefficients comprises a measurement display instrument, a silicon piezoresistance force sensor which is arranged on a support and connected with the measurement display instrument, a calibrating device which is arranged on the silicon piezoresistance force sensor, a hanging ring which is hung under the silicon piezoresistance force sensor through suspending wires, a container which is arranged under the hanging ring and a liquid level adjusting device which is arranged on the container; the silicon piezoresistance force sensor collects signals of pressures which the hanging ring is under and processes to be output to the measurement adjusting device. The temperature controlled determinator for the liquid surface tension coefficients is characterized in that a horizontal adjusting device is arranged on the hanging ring and the horizontal adjusting device comprises a positioning plate which is arranged on the upper edge of the hanging ring and a water level bubble which is fixed on the upper end surface of the positioning plate. The temperature controlled determinator for the liquid surface tension coefficients has the advantages of solving the technical problem that the existing determinator for the surface tension of the liquid is large in measuring error, reducing the measuring error, improving the measuring accuracy, measuring the liquid surface tension coefficients under different temperatures and satisfying different requirements in actual measurement.
Description
Technical field
The utility model belongs to the measurement instrument technical field, relates to a kind of analyzer, particularly a kind of controllable temperature Measurement of liquid surface tension coefficient instrument.
Background technology
Liquid surface has tension force, utilizes it that the peculiar many phenomenons of liquid condition of material can be described, as the formation of foam, moistening and capillarity etc.On industrial technology, as aspects such as flotation technology and liquid conveying technologies, all want effects on surface tension force to study.In existing Measurement of liquid surface tension coefficient instrument, the general method that pulls that adopts is measured liquid surface tension coefficient, mostly with silicon pressure resistance dependent sensor and measurement Displaying Meter that the semiconductor resistor foil gauge forms, replace Jolly spring balance, torsion balance, day equality in the past at present, carry out the measurement of liquid surface tension coefficient.This apparatus structure is simple, and is easy to operate, and measuring error is little, and repeatability better, it is clear, directly perceived that express by physical concept, but existing FD-NST-I type Measurement of liquid surface tension coefficient instrument exists following youngster to put deficiency:
1, FD-NST-I type Measurement of liquid surface tension coefficient instrument main source of error is that suspension ring are difficult for level-off, hang the copper wire length inequality of suspension ring, cause suspension ring out-of-level, under surface tension effects, the water column that the layback that the water column that the layback that suspension ring are low rises and suspension ring are high rises is the curved surface shown in Fig. 1 (a), the water column surfaces externally and internally of suspension ring pull-up just can not form the cylinder shown in Fig. 1 (b) like this, cause unbalance stress, fluid film just is easy to a side fracture high from position, in measurement, introduces gross error.According to FD-NST-I type Measurement of liquid surface tension coefficient instrument service condition, if 1 ° of suspension ring deviation during measurement, it is 0.5% that measurement result is introduced error; 2 ° of deviations, introducing error is 1.6%.The suspension ring of existing FD-NST-I type Measurement of liquid surface tension coefficient instrument are with sensation, judge under suspension ring whether level of edge by regulating three copper wires, with the method level-off both original also science not, and there is no basis for estimation, so whether level is difficult to judgement to suspension ring.
2, FD-NST-I type Measurement of liquid surface tension coefficient instrument, pulling of suspension ring is to allow the container decline that testing liquid is housed complete by the lifting nut transmission in liquid level regulation device, what in liquid level regulation device, use is fine thread, during measurement, to guarantee that container is steadily mobile very difficult up and down, the stroke of vessel moving is shorter in addition, when surveying the large liquid of some surface tension coefficients, often draws continuous liquid film; In addition when the adjusting lifting nut descends container, easily cause suspension ring or scale pan vibrations, swing (single pendulum and conical pendulm), rotation etc., can make like this hook on silicon pressure resistance dependent sensor stressed unstable, not vertical, measuring Displaying Meter shows unstable, liquid film is fracture suddenly easily, introduce gross error (human error), measuring accuracy is reduced.
3, FD-NST-I type Measurement of liquid surface tension coefficient instrument does not have heating arrangement, so can only measure the liquid surface tension coefficient under room temperature environment, and often need to measure the liquid surface tension coefficient at a certain temperature in actual measurement, so the different demands when existing analyzer can not meet actual measurement.
Summary of the invention
The purpose of this utility model is in order to solve the larger technical matters of existing Measurement of liquid surface tension coefficient instrument measuring error, in order to address this problem, we have designed a kind of controllable temperature Measurement of liquid surface tension coefficient instrument, utilize level(l)ing device to regulate the length of suspension wire, make suspension ring be in horizontality fully when measuring, simple to operation, avoided the introducing of gross error, reduce measuring error, improved measuring accuracy.
the concrete technical scheme that the utility model adopts is: a kind of controllable temperature Measurement of liquid surface tension coefficient instrument, comprise the measurement Displaying Meter, be arranged on the silicon pressure resistance dependent sensor that is connected with the measurement Displaying Meter on support, be arranged on the robot scaling equipment on silicon pressure resistance dependent sensor, by suspension wire, hang the suspension ring below silicon pressure resistance dependent sensor, be positioned at the container of suspension ring below, and be arranged on the liquid level regulation device on container, the suffered pressure signal of the suspension ring that silicon pressure resistance dependent sensor will collect is processed rear output voltage signal to measuring Displaying Meter, key is: on described suspension ring, set up level(l)ing device, comprise the location-plate that is arranged on edge on suspension ring, be fixed in the air level of location-plate upper surface.
The beneficial effects of the utility model are: utilize air level to regulate the length of suspension wire, make suspension ring be in horizontality fully, avoided the introducing of gross error, reduced measuring error, improved measuring accuracy.Utilize the temperature control heating instrument to heat the testing liquid in container, can measure the liquid surface tension coefficient under different temperatures, the different demands while meeting actual measurement.Utilize the current limliting valve to control the flow velocity of testing liquid, make the liquid level smooth decreasing, pull easily, and can avoid suspension ring or scale pan that the liquid level shake causes to shake, swing (single pendulum and conical pendulm), rotation etc., make the hook stability under loading, vertically on silicon pressure resistance dependent sensor, measure the Displaying Meter demonstration stable, avoid the introducing of gross error (human error), improve measuring accuracy.Suspension wire is the very little nylon wire of deformation, with original yielding copper wire, compares, and can reduce measuring error, improves measuring accuracy.The setting of block rubber, can produce larger friction force while making suspension wire pass block rubber, can regulate like this suspension wire length and suspension wire " can be tied tight " and is unlikely to make suspension wire from the suspension ring slippage again.When wanting to allow suspension wire shorten, availablely pull one section reserved suspension wire, pull out a part of line, the line that hangs suspension ring has just shortened.Location-plate is transparent poly (methyl methacrylate) plate, utilizes location-plate rapidly air level to be put on suspension ring or by air level and to take off from suspension ring, and is convenient and practical.
The accompanying drawing explanation
When being suspension ring pull-up water column, Fig. 1 pulls the effect schematic diagram.
Fig. 2 is structural representation of the present utility model.
The structural representation of Fig. 3 suspension ring that are the utility model when concrete use the and level(l)ing device.
In accompanying drawing, 1 represents digital voltmeter, and 2 represent silicon pressure resistance dependent sensor, and 3 represent suspension ring, and 4 represent suspension wire, and 5 represent container, and 6 represent the temperature control heating instrument, and 7 represent mozzle, and 8 represent the current limliting valve, and 9 represent air level, and 10 represent location-plate, and 11 represent through hole.
Embodiment
a kind of controllable temperature Measurement of liquid surface tension coefficient instrument, comprise the measurement Displaying Meter, be arranged on the silicon pressure resistance dependent sensor 2 that is connected with the measurement Displaying Meter on support, be arranged on the robot scaling equipment on silicon pressure resistance dependent sensor 2, by suspension wire 4, hang the suspension ring 3 below silicon pressure resistance dependent sensor 2, be positioned at the container 5 of suspension ring 3 belows, and be arranged on the liquid level regulation device on container 5, the suffered pressure signal of the suspension ring 3 that silicon pressure resistance dependent sensor 2 will collect is processed rear output voltage signal to measuring Displaying Meter, key is: on described suspension ring 3, set up level(l)ing device, comprise the location-plate 10 that is arranged on edge on suspension ring 3, be fixed in the air level 9 of location-plate 10 upper surfaces.
Described analyzer also comprises temperature control heating instrument 6, on temperature control heating instrument 6, is provided with heating arrangement and temperature control equipment, and container 5 is arranged in heating arrangement.
Described liquid level regulation device comprises the mozzle 7 that is communicated with container 5, is arranged on the current limliting valve 8 on mozzle 7.
The structure that described suspension ring 3 are hung on suspension wire 4 comprises: suspension wire 4 terminations are provided with block rubber, and block rubber is fixed in the through hole 11 of offering on suspension ring 3.
Described robot scaling equipment comprises scale pan, the counterweight of hanging on silicon pressure resistance dependent sensor 2.
Described measurement Displaying Meter is digital voltmeter 1.
The utility model comprises the following steps when concrete the use:
A, at first open digital voltmeter 1 preheating three to five minutes, then silicon pressure resistance dependent sensor 2 is calibrated.Its concrete operations are for to hang over scale pan on the hook of silicon pressure resistance dependent sensor 2, by the rotation knob that returns to zero, digital voltmeter 1 is made zero, then be added in successively the counterweight of seven 0.5g in scale pan, record corresponding voltage output value, by least square method, to the measure data fitting straight line, obtain the sensitivity B of silicon pressure resistance dependent sensor 2.
The inside and outside diameter of b, use vernier caliper measurement suspension ring 3, be designated as respectively D
1, D
2.
C, on suspension ring 3 along the location-plate 10 of placing upper surface and be fixed with air level 9, the length of regulating three suspension wires 4, judge by observing air level 9 whether suspension ring 3 are up to the standard.
D, the testing liquid of packing in container 5,3 times edges of suspension ring are immersed in testing liquid, open the power supply preheating of temperature control heating instrument 6, utilize temperature control equipment target setting temperature, the temperature control heating instrument is opened the work of 6 beginnings, due to heat conducting effect, the testing liquid temperature can slowly approach the target temperature of setting.
E, open the current limliting valve 8 on liquid level regulation device, slowly discharge testing liquid, utilize current limliting valve 8 to control the liquid level decline rate well.Write down the reading value U that suspension ring 3 are about to break the front digital voltmeter 1 of fluid column
1, break rear moment digital voltmeter reading value U of 1
2.
F, according to F=π (D
1+ D
2) α=(U
1-U
2)/B obtains liquid surface tension coefficient α=(U
1-U
2)/π (D
1+ D
2) B, with standard value, compare the computation and measurement error.
This analyzer is simple to operation, has reduced measuring error, has improved measuring accuracy, can measure to the liquid surface tension coefficient under different temperatures the different demands while meeting actual measurement.
Claims (6)
1. controllable temperature Measurement of liquid surface tension coefficient instrument, comprise the measurement Displaying Meter, be arranged on the silicon pressure resistance dependent sensor (2) that is connected with the measurement Displaying Meter on support, be arranged on the robot scaling equipment on silicon pressure resistance dependent sensor (2), by suspension wire (4), hang the suspension ring (3) in silicon pressure resistance dependent sensor (2) below, be positioned at the container (5) of suspension ring (3) below, and be arranged on the liquid level regulation device on container (5), the suffered pressure signal of the suspension ring (3) that silicon pressure resistance dependent sensor (2) will collect is processed rear output voltage signal to measuring Displaying Meter, it is characterized in that: on described suspension ring (3), set up level(l)ing device, comprise the location-plate (10) that is arranged on the upper edge of suspension ring (3), be fixed in the air level (9) of location-plate (10) upper surface.
2. a kind of controllable temperature Measurement of liquid surface tension coefficient instrument according to claim 1, it is characterized in that: described analyzer also comprises temperature control heating instrument (6), the temperature control heating instrument is provided with heating arrangement and temperature control equipment on (6), and container (5) is arranged in heating arrangement.
3. a kind of controllable temperature Measurement of liquid surface tension coefficient instrument according to claim 1 is characterized in that: described liquid level regulation device comprises the mozzle (7) that is communicated with container (5), is arranged on the current limliting valve (8) on mozzle (7).
4. a kind of controllable temperature Measurement of liquid surface tension coefficient instrument according to claim 1, it is characterized in that: the structure that described suspension ring (3) are hung on suspension wire (4) comprises: suspension wire (4) termination is provided with block rubber, and block rubber is fixed in the through hole (11) of offering on suspension ring (3).
5. a kind of controllable temperature Measurement of liquid surface tension coefficient instrument according to claim 1, it is characterized in that: described robot scaling equipment comprises scale pan, the counterweight of hanging on silicon pressure resistance dependent sensor (2).
6. a kind of controllable temperature Measurement of liquid surface tension coefficient instrument according to claim 1, it is characterized in that: described measurement Displaying Meter is digital voltmeter (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203767707U CN203299088U (en) | 2013-06-28 | 2013-06-28 | Temperature controlled determinator for liquid surface tension coefficients |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203767707U CN203299088U (en) | 2013-06-28 | 2013-06-28 | Temperature controlled determinator for liquid surface tension coefficients |
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| CN203299088U true CN203299088U (en) | 2013-11-20 |
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|---|---|---|---|
| CN2013203767707U Expired - Fee Related CN203299088U (en) | 2013-06-28 | 2013-06-28 | Temperature controlled determinator for liquid surface tension coefficients |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964900A (en) * | 2015-08-05 | 2015-10-07 | 湖南城市学院 | Lifting ring for liquid surface tension coefficient measuring experiment |
| CN108267386A (en) * | 2018-01-12 | 2018-07-10 | 长沙雁飞电子科技有限公司 | Liquid surface tension measuring instrument |
| CN108827835A (en) * | 2018-07-03 | 2018-11-16 | 重庆知遨科技有限公司 | Pulling escape liquid surface tension coefficient measuring device |
| CN110763596A (en) * | 2019-10-31 | 2020-02-07 | 清华大学 | Surface tension measuring method |
| CN113376059A (en) * | 2021-05-11 | 2021-09-10 | 南京航空航天大学 | STM32 singlechip intelligent control-based liquid surface tension meter and use method thereof |
-
2013
- 2013-06-28 CN CN2013203767707U patent/CN203299088U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964900A (en) * | 2015-08-05 | 2015-10-07 | 湖南城市学院 | Lifting ring for liquid surface tension coefficient measuring experiment |
| CN108267386A (en) * | 2018-01-12 | 2018-07-10 | 长沙雁飞电子科技有限公司 | Liquid surface tension measuring instrument |
| CN108827835A (en) * | 2018-07-03 | 2018-11-16 | 重庆知遨科技有限公司 | Pulling escape liquid surface tension coefficient measuring device |
| CN110763596A (en) * | 2019-10-31 | 2020-02-07 | 清华大学 | Surface tension measuring method |
| CN110763596B (en) * | 2019-10-31 | 2021-07-09 | 清华大学 | Surface tension measuring method |
| CN113376059A (en) * | 2021-05-11 | 2021-09-10 | 南京航空航天大学 | STM32 singlechip intelligent control-based liquid surface tension meter and use method thereof |
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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: 20131120 Termination date: 20140628 |
|
| EXPY | Termination of patent right or utility model |