CN203981541U - Liquid surface tension measuring instrument - Google Patents
Liquid surface tension measuring instrument Download PDFInfo
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- CN203981541U CN203981541U CN201420119091.6U CN201420119091U CN203981541U CN 203981541 U CN203981541 U CN 203981541U CN 201420119091 U CN201420119091 U CN 201420119091U CN 203981541 U CN203981541 U CN 203981541U
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- Prior art keywords
- liquid surface
- surface tension
- measuring instrument
- tension measuring
- display
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Abstract
The utility model provides a kind of liquid surface tension measuring instrument, described liquid surface tension measuring instrument comprises bubble generating unit, pressure sensitive unit, temperature detecting unit and display, described bubble generating unit, described pressure sensitive unit, described temperature detecting unit are connected with described display respectively, and described bubble generating unit is connected with described pressure sensitive unit.The utility model is by the gas turnover flow of Single-chip Controlling Micropump, thereby control kapillary in blebbing size and the frequency of liquid surface, avoid the air pump of rated power or instrument or the personal error that glass device brings, improved the precision of measuring, and simple to operate, be convenient to education experiment operation; By communication port, be connected with computing machine, be convenient to E-learning experiment, can also show on computers pressure in bubbles change curve, surface tension of liquid value under gas with various flow condition, under condition of different temperatures or under different liquids condition, and in computing machine save data.
Description
Technical field
The utility model relates to a kind of tension measuring device, particularly relates to a kind of liquid surface tension measuring instrument.
Background technology
Surface tension is one of basic materialization character of liquid, is the important parameter of the relevant surface phenomena of research and surfactant properties.Conventionally measuring surface tension has several different methods, in laboratory and physical chemistry textbook, conventionally adopts maximum bubble method at present.Because maximum bubble method experiment equipment is easy to get, method of operating is relatively easy to student and understands capillary principle, thereby is the common contents of Process and The Teaching of Physical Chemistry experiment for a long time.
At present, maximum bubble method liquid surface tension measuring instrument is on the market broadly divided into two classes: take glass as main traditional measurement device and the electronic gauge of integrated design.
Traditional measurement device is used for education experiment.Due to outward appearance old stuff, build loaded down with trivial detailsly, the reason such as Glass breadks easily, sealing are poor, easily produces system or personal error, precision is lower.Traditional measurement device does not possess corresponding software and hardware, cannot carry out data communication with computer, can not carry out on-line operation.
The precision of the electronic gauge of integrated design, higher than traditional measurement device, is furnished with the port or the software that are connected with computer substantially.Its defect is expensive, and cannot regulate and control Air Bubble Size and frequency, is not easy to education experiment operation.Therefore in this quasi-instrument most Hui enterprise or research institute, use, be difficult to be widely used in education experiment.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of liquid surface tension measuring instrument, have the defect that precision is low, be difficult to adaptive E-learning for solving prior art traditional measurement surface tension of liquid device, and that integrated electric measuring instrument exists is expensive, the problem that is not easy to education experiment operational deficiencies.
For achieving the above object and other relevant objects, the utility model provides a kind of liquid surface tension measuring instrument, comprises bubble generating unit, pressure sensitive unit, temperature detecting unit and display.Described bubble generating unit, described pressure sensitive unit, described temperature detecting unit are connected with described display respectively, and described bubble generating unit is connected with described pressure sensitive unit.Described bubble generating unit comprises kapillary, Micropump and the first electric drive controller, for exporting γ-ray emission bubble to liquid surface.Described Micropump is provided with air intake opening, gas outlet and connector.Described one end capillaceous by described gas outlet be connected with described Micropump, the other end and liquid surface tangent.Described Micropump is connected with described the first electric drive controller by described connector.Described the first electric drive controller is connected with described display.Described pressure sensitive unit comprises pressure transducer and the second electric drive controller, for detection of the pressure of described Bubble formation.Described kapillary, described gas outlet and described pressure transducer interconnect by three-way pipe.Described the second electric drive controller is connected with described pressure transducer, described display.Described temperature detecting unit comprises Temperature Detector and temperature sensing rod, for detection of the temperature of liquid.Described temperature sensing rod one end is connected with described Temperature Detector, and the other end gos deep into liquid internal.Described Temperature Detector is connected with described display, is sent to display after fluid temperature value being detected.
Preferably, described nozzle diameter capillaceous is 0.5-1mm.
Preferably, described the first electric drive controller comprises the first single-chip microcomputer and second singlechip; Described the first single-chip microcomputer is connected with described Micropump, for controlling the gas turnover flow of described Micropump; Described second singlechip is connected with described the first single-chip microcomputer, described display, for controlling output voltage and the power frequency of described the first single-chip microcomputer, and output voltage and power frequency value is sent to described display.
Preferably, described the first electric drive controller also comprises the 3rd single-chip microcomputer being connected with described second singlechip, described display, for calculate the gas flow value of described Micropump according to the nominal parameter of described output voltage and power frequency and described Micropump, described gas flow value is sent to described display.
Preferably, described liquid surface tension measuring instrument also comprises with described second singlechip and being connected, for setting the button of described output voltage and power frequency.
Preferably, described the second electric drive controller comprises the 4th single-chip microcomputer, and described the 4th single-chip microcomputer is connected with described pressure transducer, described display, for the treatment of the pressure signal of described pressure transducer output, obtain pressure in bubbles value, and described pressure in bubbles value is sent to described display.
Preferably, described liquid surface tension measuring instrument also comprises and described bubble generating unit, described temperature detecting unit, described pressure sensitive unit, the communication connection of described display, for connecting the communication port of computing machine.
As mentioned above, the utility model liquid surface tension measuring instrument, there is following beneficial effect: by the gas turnover flow of Single-chip Controlling Micropump, thereby control kapillary in blebbing size and the frequency of liquid surface, meet maximum bubble method and measure surface tension of liquid, avoid the air pump of rated power or instrument or the personal error that glass device brings, improved the precision of measuring, and simple to operate, be convenient to education experiment operation; By communication port, be connected with computing machine, be convenient to E-learning experiment, can also show on computers pressure in bubbles change curve, surface tension of liquid value under gas with various flow condition, under condition of different temperatures or under different liquids condition, and save data on computers.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of the utility model liquid surface tension measuring instrument.
Fig. 2 is shown as the inner structure schematic diagram of the utility model liquid surface tension measuring instrument.
Fig. 3 is shown as the structural representation of Micropump in the utility model liquid surface tension measuring instrument bubble generating unit.
Fig. 4 is shown as the front schematic view of the utility model liquid surface tension measuring instrument the second embodiment.
Fig. 5 is shown as the schematic rear view of the utility model liquid surface tension measuring instrument the second embodiment.
Element numbers explanation
1 liquid surface tension measuring instrument
11 bubble generating units
13 pressure sensitive unit
15 temperature detecting units
17 displays
19 communication interfaces
111 first electric drive controllers
113 Micropumps
115 kapillaries
131 pressure transducers
133 second electric drive controllers
151 Temperature Detectors
153 temperature sensing rods
1111 first single-chip microcomputers
1113 second singlechips
1131 air intake openings
1133 gas outlets
1135 connectors
1331 the 4th single-chip microcomputers
Embodiment
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this instructions.
Refer to Fig. 1-Fig. 5.Notice, appended graphic the illustrated structure of this instructions, ratio, size etc., equal contents in order to coordinate instructions to disclose only, for person skilled in the art scholar, understand and read, not in order to limit the enforceable qualifications of the utility model, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under the effect that the utility model can produce and the object that can reach, all should still drop on the technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, in this instructions, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under without essence change technology contents, when being also considered as the enforceable category of the utility model.
Embodiment mono-
Fig. 1 is the structural representation of the utility model liquid surface tension measuring instrument.Fig. 2 is the inner structure schematic diagram of the utility model liquid surface tension measuring instrument.
As Figure 1-Figure 2, the utility model provides a kind of liquid surface tension measuring instrument, and in the present embodiment, liquid surface tension measuring instrument 1 comprises bubble generating unit 11, pressure sensitive unit 13, temperature detecting unit 15 and display 17.
Bubble generating unit 11, is connected with pressure sensitive unit 13, display 17.Particularly, bubble generating unit 11 comprises the first electric drive controller 111, Micropump 113 and kapillary 115.Fig. 3 is micro-pump structure schematic diagram, as shown in Figure 3, Micropump 113 is provided with air intake opening 1131, gas outlet 1133 and connector 1135, one end of kapillary 115 by gas outlet 1133 be connected with Micropump 113, the other end and liquid surface tangent, the first electric drive controller 111 passes through connector 1135 and is connected with Micropump 113.The first electric drive controller 111 comprises the first single-chip microcomputer 1111 and second singlechip 1113; The first single-chip microcomputer 1111 is connected with Micropump 113, for controlling the gas turnover flow of Micropump 113; Second singlechip 1113 is connected with the first single-chip microcomputer 1111, display 17, for controlling output voltage and the power frequency of the first single-chip microcomputer 1111, and output voltage and power frequency value is sent to display 17.
Pressure sensitive unit 13, is connected with display 17.Particularly, pressure sensitive unit 13 comprises pressure transducer 131 and the second electric drive controller 133.Kapillary 115, gas outlet 1133 and pressure transducer 131 interconnect by three-way pipe, and the second electric drive controller 133 is connected with pressure transducer 131.The second electric drive controller 133 comprises the 4th single-chip microcomputer 1331, the 4th single-chip microcomputer 1331 is connected with pressure transducer 131, display 17, pressure signal for the treatment of pressure transducer 131 outputs, obtains pressure in bubbles value, and described pressure in bubbles value is sent to display 17.
Temperature detecting unit 15, is connected with display 17.Particularly, temperature detecting unit 15 comprises Temperature Detector 151 and temperature sensing rod 153.Temperature sensing rod 153 one end are connected with Temperature Detector 151, and the other end gos deep into liquid internal.Temperature Detector 151 is connected with display 17, is sent to display 17 after fluid temperature value being detected.
Display 17, for showing that described pressure in bubbles value that described output voltage that second singlechip 1113 sends and power frequency, the 4th single-chip microcomputer 1331 send is, the fluid temperature value that Temperature Detector 151 sends.
Preferably, the nozzle diameter of kapillary 115 is 0.5-1mm.
Preferably, the first electric drive controller 111 also comprises the 3rd single-chip microcomputer (not illustrating in the drawings) being connected with the first single-chip microcomputer 1111, display 17, for calculating the gas flow value of Micropump 113 according to the voltage and current frequency of 1113 pairs of Micropumps of second singlechip, 113 outputs and the nominal parameter of Micropump 113, and described gas flow value is sent to display 17.
The workflow of liquid surface tension measuring instrument 1 is as follows:
Liquid surface tension measuring instrument 1 is fixedly mounted on iron stand, and the liquid surface in the lower end of kapillary 115 and iron stand upper container is tangent, and temperature sensing rod 153 gos deep into liquid internal, opening power;
By button setting voltage and power frequency on liquid surface tension measuring instrument 1 outside surface, second singlechip 1113 is controlled the voltage and current frequency that the first single-chip microcomputer 1111 is set to Micropump 113 outputs, and described voltage and current frequency is sent to display 17;
Pressure transducer 131 detects backward the second electric drive controller 133 output pressure signals of pressure, and the pressure signal of the 4th single-chip microcomputer 1331 processing pressure sensor 131 outputs, obtains pressure in bubbles value, and described pressure in bubbles value is sent to display 17;
Temperature Detector 151 detects after fluid temperature by temperature sensing rod 153, and the fluid temperature value detecting is sent to display 17;
Display 17 shows described gas flow value, described pressure in bubbles value and the described fluid temperature value receiving.
In the above-mentioned preferred version that comprises described the 3rd single-chip microcomputer, described workflow also comprises: when second singlechip 1113 control the first single-chip microcomputers 1111 export to Micropump 113 the voltage and current frequency of setting, the 3rd single-chip microcomputer obtains the voltage and current frequency of described setting from second singlechip 1113, and according to the nominal parameter of the voltage and current frequency of described setting and Micropump 113, calculate the gas flow value of Micropump 113, described gas flow value is sent to display 17.
Embodiment bis-
Fig. 4 is the front schematic view of the present embodiment, the schematic rear view that Fig. 5 is the present embodiment.
As Figure 1-Figure 5, the utility model provides a kind of liquid surface tension measuring instrument, and in the present embodiment, liquid surface tension measuring instrument 1 comprises bubble generating unit 11, pressure sensitive unit 13, temperature detecting unit 15, display 17 and communication interface 19.Described bubble generating unit 11, pressure sensitive unit 13, temperature detecting unit 15, display 17 are as bubble generating unit 11 described in embodiment mono-, pressure sensitive unit 13, temperature detecting unit 15, display 17.
Communication interface 19, with bubble generating unit 11, pressure sensitive unit 13, temperature detecting unit 15, display 17 communication connections, for connecting computing machine.Particularly, liquid surface tension measuring instrument 1 connects after computing machines by communication interface 19, second singlechip 1113 by communication interface 19 by described voltage and current frequency be sent to computing machine, the 4th single-chip microcomputer 1331 by communication interface 19 by described pressure in bubbles value be sent to computing machine, Temperature Detector 151 is sent to computing machine by communication interface 19 by described fluid temperature value.In the preferred version that comprises described the 3rd single-chip microcomputer, described the 3rd single-chip microcomputer is sent to computing machine by described gas flow value by communication interface 19.Can record and show the pressure in bubbles change curve under gas with various flow condition, under condition of different temperatures or under different liquids condition on computers, carry out E-learning experiment.
In sum, the utility model is by the gas turnover flow of Single-chip Controlling Micropump, thereby control kapillary in blebbing size and the frequency of liquid surface, meet largest air bubbles and send out measurement surface tension of liquid, avoid the air pump of rated power or instrument or the personal error that glass device brings, improved the precision of measuring, and simple to operate, be convenient to education experiment operation; By communication port, be connected with computing machine, be convenient to E-learning experiment, can also show on computers the pressure in bubbles change curve under gas with various flow condition, under condition of different temperatures or under different liquids condition, and save data on computers.So the utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (6)
1. a liquid surface tension measuring instrument, it is characterized in that: described liquid surface tension measuring instrument comprises bubble generating unit, pressure sensitive unit, temperature detecting unit and display, described bubble generating unit, described pressure sensitive unit, described temperature detecting unit are connected with described display respectively, and described bubble generating unit is connected with described pressure sensitive unit;
Described bubble generating unit comprises kapillary, Micropump and the first electric drive controller, for exporting γ-ray emission bubble to liquid surface; Described Micropump is provided with air intake opening, gas outlet and connector, described one end capillaceous by described gas outlet be connected with described Micropump, the other end and liquid surface tangent, described Micropump is connected with described the first electric drive controller by described connector, and described the first electric drive controller is connected with described display;
Described pressure sensitive unit comprises pressure transducer and the second electric drive controller, for detection of the pressure of described Bubble formation; Described kapillary, described gas outlet and described pressure transducer interconnect by three-way pipe, and described the second electric drive controller is connected with described pressure transducer, described display;
Described temperature detecting unit comprises Temperature Detector and temperature sensing rod, for detection of the temperature of liquid; Described temperature sensing rod one end is connected with described Temperature Detector, and the other end gos deep into liquid internal; Described Temperature Detector is connected with described display.
2. liquid surface tension measuring instrument according to claim 1, is characterized in that: described nozzle diameter capillaceous is 0.5-1mm.
3. liquid surface tension measuring instrument according to claim 1, is characterized in that: described the first electric drive controller comprises the first single-chip microcomputer and second singlechip; Described the first single-chip microcomputer is connected with described Micropump, for controlling the gas turnover flow of described Micropump; Described second singlechip is connected with described the first single-chip microcomputer, described display, for controlling output voltage and the power frequency of described the first single-chip microcomputer, and output voltage and power frequency value is sent to described display.
4. liquid surface tension measuring instrument according to claim 3, is characterized in that: described liquid surface tension measuring instrument also comprises with described second singlechip and being connected, for setting the button of described output voltage and power frequency.
5. liquid surface tension measuring instrument according to claim 1, it is characterized in that: described the second electric drive controller comprises the 4th single-chip microcomputer, described the 4th single-chip microcomputer is connected with described pressure transducer, described display, pressure signal for the treatment of described pressure transducer output, obtain pressure in bubbles value, and described pressure in bubbles value is sent to described display.
6. liquid surface tension measuring instrument according to claim 1, it is characterized in that: described liquid surface tension measuring instrument also comprises and described bubble generating unit, described temperature detecting unit, described pressure sensitive unit, the communication connection of described display, for connecting the communication port of computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119091.6U CN203981541U (en) | 2014-03-17 | 2014-03-17 | Liquid surface tension measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119091.6U CN203981541U (en) | 2014-03-17 | 2014-03-17 | Liquid surface tension measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203981541U true CN203981541U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420119091.6U Expired - Fee Related CN203981541U (en) | 2014-03-17 | 2014-03-17 | Liquid surface tension measuring instrument |
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| Country | Link |
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| CN (1) | CN203981541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940705A (en) * | 2014-03-17 | 2014-07-23 | 上海中医药大学 | Liquid surface tension measuring instrument and measuring method |
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2014
- 2014-03-17 CN CN201420119091.6U patent/CN203981541U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940705A (en) * | 2014-03-17 | 2014-07-23 | 上海中医药大学 | Liquid surface tension measuring instrument and measuring method |
| CN103940705B (en) * | 2014-03-17 | 2016-07-06 | 上海中医药大学 | liquid surface tension measuring instrument and measuring method |
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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: 20141203 Termination date: 20150317 |
|
| EXPY | Termination of patent right or utility model |