CN208187903U - A kind of liquid surface stress coefficient measuring instrument - Google Patents
A kind of liquid surface stress coefficient measuring instrument Download PDFInfo
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- CN208187903U CN208187903U CN201820867042.9U CN201820867042U CN208187903U CN 208187903 U CN208187903 U CN 208187903U CN 201820867042 U CN201820867042 U CN 201820867042U CN 208187903 U CN208187903 U CN 208187903U
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- hanging ring
- liquid surface
- hanging
- measuring instrument
- surface stress
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Abstract
The utility model discloses a kind of liquid surface stress coefficient measuring instruments, belong to measuring instrumentss technical field, including pedestal, hanging ring, perpendicular fixed frame is provided on pedestal, hanging ring is suspended on hanging scaffold by lifting rope, lifting rope be arranged to along the circumferential direction of hanging ring it is uniformly distributed at least three, the position that lifting rope is corresponded on hanging scaffold is provided with adjusting rod, the upper end of lifting rope is wrapped on adjusting rod, it is provided on hanging scaffold by the first clamping screw of adjusting rod locking opposite with hanging scaffold, it is provided on perpendicular fixed frame on driving hanging ring, the longitudinal driving mechanism of lower movement, level detection device is detachably placed on hanging ring, liquid surface stress coefficient measuring instrument further includes the measuring device for measuring the hanging ring stress.The application is by the release of rotation adjusting rod or withdraws lifting rope extension elongation, the gradient of hanging ring is adjusted, it is detected by levelness of the level detection device to hanging ring, the application improves the inaccurate problem of current instrument calibration, and hanging ring levelness is not easy the problem of adjusting.
Description
Technical field
The utility model belongs to measuring instrumentss technical field, be related to a kind of use for laboratory for measuring surface tension of liquid
The measuring instrument of coefficient.
Background technique
Liquid surface tension coefficient is one of liquid key property, and surface tension of liquid is a weight for characterizing liquid property
Want parameter.Measuring liquid surface tension coefficient, there are many method, including Pulling escape, drop-weight method, capillary tube method, fiber optic interferometric methods
Deng wherein Pulling escape is measurement one of common method of liquid surface tension coefficient.The hanging ring that it is immersed on liquid level by measurement
Pulling force when (circle, plate) is detached from liquid level acquires surface tension, and then by tension divided by the perimeter of tested liquid level and ring contact interface,
Acquire surface tension coefficient.
The FD-NST-I type that current most of institution of higher learning all use Fudantianxin Science and Educational Instrument Co., Ltd., Shanghai to produce
Measurement of liquid surface tension coefficient instrument measures liquid surface tension coefficient.The analyzer includes that highly sensitive Minimal Tension passes
Sensor, measurement display instrument, hanging ring, glass plate, elevating lever, counterweight composition, micro-tension sensor are fixed on by fixed screw
On bracket, bracket is fixed with pedestal: the glass plate for holding fluid to be measured is positioned on pedestal, by lateral frame by elevating lever
Side, elevating lever are the spiral lifting regulating mechanism being made of nut, screw rod；Hanging ring is linked up with by hang spring in parting a little on sensor,
Sensor is connect by cable with measurement display instrument.
Although this analyzer structure is simple, easy to operate, some shortcomings are still had during the experiment:
(1) calibration precision is inadequate:
In experiment, the measurement process of force-sensing sensor sensitivity is referred to as to calibrate.FD-NST-I type surface tension of liquid system
Number analyzers, be counterweight is put on scale pan to calibrate Silicon pressure dependent sensor, but find in experimentation, if
Scale pan is not horizontal, then the variation for linking up with place stress is not directly proportional to voltage, and counterweight is placed in the different positions of scale pan
It sets, the voltage value reading of force-sensing sensor is different.
(2) hanging ring level is not easy to adjust:
The levelness of FD-NST-I type Measurement of liquid surface tension coefficient instrument hanging ring is adjusted by three fine wires
, experimenter can only be by visually substantially judging.And test and require hanging ring holding horizontal, and provide related data: hanging
1 ° of ring deviation, measurement result introduces error 0.5%, and 2 ° of deviation, then introducing error is 1.6%.
(3) it is vibrated during membrane inevitable:
Membrane process is to drive the liquid in glassware to decline by rotation lifting platform big nut, is to manually complete,
Manually adjusting is that liquid level is be easy to cause to shake, and brings error to measurement.
(4) lifting platform stroke is small:
Adjustable extent is about 1cm to the lifting platform of FD-NST-I type Measurement of liquid surface tension coefficient instrument up and down, and stroke is smaller,
In the biggish liquid of the certain surface tension of measurement, it may appear that the case where drawing continuous liquid film.
(5) it is affected in experimentation by surrounding flow:
The hanging ring and testing liquid of FD-NST-I type Measurement of liquid surface tension coefficient instrument all it is exposed in the lab, for
Physical Experiment Course, student relatively concentrate, and instrument is influenced that obviously, experimental error can be brought by student and surrounding flow.
Utility model content
The utility model improves mainly solving the technical problems that provide a kind of liquid surface stress coefficient measuring instrument
It states analyzer calibration inaccurate problem and hanging ring levelness and is not easy the problem of adjusting.
In order to solve the above technical problems, the technical solution adopted in the utility model is: providing a kind of surface tension of liquid system
Number measuring instrument, including pedestal, hanging ring, are provided with perpendicular fixed frame, which is suspended on a hanging scaffold by lifting rope on the base
On, the lifting rope be arranged to along the circumferential direction of the hanging ring it is uniformly distributed at least three, the position setting of the lifting rope is corresponded on the hanging scaffold
There is adjusting rod, the upper end of the lifting rope is wrapped on the adjusting rod, is provided on the hanging scaffold by adjusting rod lock opposite with the hanging scaffold
The first tight clamping screw, is provided with the longitudinal driving mechanism for driving the hanging ring to move up and down on the perpendicular fixed frame, on the hanging ring
It detachably is placed with level detection device, which further includes the measurement dress for measuring the hanging ring stress
It sets.
It is further preferred that the upper end that above-mentioned longitudinal driving mechanism includes above-mentioned hanging scaffold is equipped with sleeve, above-mentioned perpendicular fixation
Lateral frame is provided on frame, the front end of the lateral frame is provided with secondary perpendicular support, which is set in the pair perpendicular support, the sleeve
Side wall on be rotatably equipped with gear, which is located at the interior intracavitary of the sleeve, is provided on the outside of the sleeve solid with the gear
Surely the adjusting knob connected is provided with the rack structure with gear engaged transmission on the side wall of the pair perpendicular support, the sleeve
It is provided on side wall for by second clamping screw of the sleeve and the pair perpendicular support locking.
It is further preferred that above-mentioned longitudinal driving mechanism includes setting on above-mentioned perpendicular fixed frame in another embodiment of the application
It is equipped with lateral frame, vertical sleeve is provided on the lateral frame, driving gear is equipped in above-mentioned vertical sleeve and drives the driving gear
The knob of rotation, above-mentioned hanging scaffold upper end are equipped with the rack gear for engaging with the driving gear, set on the inner tube wall of the vertical sleeve
It is equipped with the guide groove with rack gear guiding tight fit.
It is further preferred that above-mentioned longitudinal driving mechanism includes perpendicular fixed mount setting into silk in another embodiment of the application
Bumper structure, the perpendicular fixed frame rolling assembling are provided with ball nut on above-mentioned pedestal on the perpendicular fixed frame, above-mentioned hanging scaffold with should
Ball nut is fixed by the connecting rod connection, and the lower end of the ball nut is provided with lock piece.
It is further preferred that guide rod is fixedly installed on above-mentioned pedestal, one end of above-mentioned connecting rod and the guide rod
Assembly is moved up and down, integrally-built stability is further increased.
It is further preferred that above-mentioned measuring device is to be arranged on above-mentioned pedestal for placing the electronics day of liquid container
It is flat.
It is further preferred that above-mentioned level detection device is arranged to triangular sheets, the center setting of the triangular sheets
There is level meter.
It is further preferred that being provided with the transparent of the periphery for being disposed around aforesaid liquid container on above-mentioned electronic balance
Cover.
It is further preferred that being respectively arranged with leveling bolt at each angle of above-mentioned pedestal.
The beneficial effects of the utility model are: liquid surface stress coefficient measuring instrument provided by the utility model, to hanging
When ring is leveled, by the release of rotation adjusting rod or lifting rope extension elongation is withdrawn, the gradient of hanging ring is adjusted, is passed through
Level detection device detects the levelness of hanging ring, using the first clamping screw to adjusting after the Level-adjusting of hanging ring is good
Bar is locked, and then hanging ring is made to be able to maintain the levelness adjusted, and is then recycled under longitudinal driving mechanism driving hanging ring
Drop is immersed in measured liquid, and longitudinal driving mechanism, which is driven in the reverse direction hanging ring, rises hanging ring, is hung by measuring device measurement
The case where ring stress, and then can be calculated liquid surface tension coefficient, the application can it is simple, accurately to the water of hanging ring
Pingdu is adjusted, and reduces the error of measurement result, and the application is accurately controlled hanging ring by longitudinal driving mechanism and goes up and down, can
Increase the stroke of hanging ring.The application structure is simple, and operation is easy, and is that the fields such as scientific research and teaching measure liquid surface tension coefficient
Provide a kind of simple and reliable instrument.
Further, longitudinal driving mechanism uses gear-rack drive, can accurately control the lifting of hanging ring, and can
Guarantee that hanging ring is smoothly gone up and down, stablize membrane process, the data result measured is accurate, reduces error.
Further, it is shown and is read using electronic balance, electronic balance weighing is accurate, precision is high, convenient reading, significantly simple
Change the calculating process of experimental data, thus is effectively simplified measuring process.
Further, level detection device is designed to triangular sheets structure, in the detection process, need to only place it in
Above hanging ring, after the level calibration of hanging ring is completed, next step operation can be carried out by directly removing triangular sheets, make hanging ring water
Flat calibration process is simple, easy to operate.
Further, the translucent cover of setting can be avoided liquid and hanging ring and shake because of extraneous influence, and cause to survey
Measure the problem of result inaccuracy.
Further, the leveling bolt being arranged on pedestal is further able to guarantee the levelness of pedestal, reduces measurement and misses
Difference.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment one of the utility model liquid surface stress coefficient measuring instrument；
Fig. 2 is the top view of one hanging scaffold of embodiment of liquid surface stress coefficient measuring instrument in Fig. 1；
Fig. 3 is the top view of one level detection device of embodiment of liquid surface stress coefficient measuring instrument in Fig. 1；
Fig. 4 is that the longitudinal driving mechanism structure in the embodiment two of the utility model liquid surface stress coefficient measuring instrument is shown
It is intended to；
Fig. 5 is the structural schematic diagram of the embodiment three of the utility model liquid surface stress coefficient measuring instrument.
In figure, 1 it is pedestal, 2 is hanging ring, 3 is perpendicular fixed frame, 4 is lifting rope, 5 is hanging scaffold, 6 is adjusting rod, 7 is the first lock
Tight bolt, 8 be sleeve, 9 be lateral frame, 10 be secondary perpendicular support, 11 be gear, 12 be adjusting knob, 13 be rack structure, 14 be
Liquid container, 15 be electronic balance, 16 be triangular sheets, 17 be level meter, 18 be translucent cover, 19 be leveling bolt, 21 be
Vertical sleeve, 22 be driving gear, 23 be knob, 24 be rack gear, 31 be perpendicular fixed frame, 32 be ball nut, 33 be connecting rod, 34
It is guide rod for lock piece, 35.
Specific embodiment
In the description of specific embodiment of the present utility model, it is to be understood that term " center ", " longitudinal direction ", " cross
To ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", the instructions such as "outside" side
Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description the utility model and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it should not be understood as limiting the present invention.In addition, term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indication or suggestion relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " etc. can explicitly or implicitly include one or more of the features.In retouching for the utility model
In stating, unless otherwise indicated, the meaning of " plurality " is refer to two or more.Term "and/or" used in this specification
Including any and all combinations of one or more related listed items.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense.For example, it may be being fixedly connected, it may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed
Thin explanation.The preferred embodiment of the utility model is given in attached drawing.But the utility model can be with many different
Form is realized, however it is not limited to this specification described embodiment.On the contrary, purpose of providing these embodiments is makes to this
The understanding of the disclosure of utility model is more thorough and comprehensive.
Embodiment one
Liquid surface stress coefficient measuring instrument embodiment one provided by the utility model, as shown in Figures 1 to 3, including pedestal
1, hanging ring 2 are provided with perpendicular fixed frame 3 on pedestal 1, and hanging ring 2 is suspended on a hanging scaffold 5 by lifting rope 4, and lifting rope 4 is arranged to
Along uniformly distributed three of the circumferential direction of hanging ring 2, the tether point of hanging scaffold 5 and hanging ring 2 constitutes equilateral triangle, convenient to hanging ring 2
Levelness is adjusted.The position that every lifting rope 4 is corresponded on hanging scaffold 5 is respectively arranged with adjusting rod 6, and the upper end of lifting rope 4 is wrapped in
On adjusting rod 6, it is provided on hanging scaffold 5 by the first clamping screw 7 of adjusting rod 6 and the opposite locking of hanging scaffold 5, erects and set on fixed frame 3
It is equipped with the longitudinal driving mechanism for driving the hanging ring to move up and down, is detachably placed with level detection device, this implementation on hanging ring 2
Example further includes the measuring device for measuring 2 stress of hanging ring.
The present embodiment erects solid it is further preferred that the upper end that above-mentioned longitudinal driving mechanism includes hanging scaffold 5 is equipped with sleeve 8
Determine to be provided with lateral frame 9 on frame 3, the front end of lateral frame 9 is provided with secondary perpendicular support 10, and sleeve 8 is set in secondary perpendicular support 10, set
It is rotatably equipped with gear 11 on the side wall of cylinder 8, gear 11 is located at the interior intracavitary of sleeve 8, and the outside of sleeve 8 is provided with and gear 11
The adjusting knob 12 being fixedly connected is provided with the rack structure 13 with 11 engaged transmission of gear, set on the side wall of secondary perpendicular support 10
It is provided on the side wall of cylinder 8 for by the second clamping screw of sleeve 8 and secondary 10 locking of perpendicular support.
Longitudinal driving mechanism uses gear-rack drive, can accurately control the lifting of hanging ring 2, and can guarantee hanging ring
2 smoothly liftings, stablize membrane process, and the data result measured is accurate, reduces error.
The present embodiment is it is further preferred that measuring device is to be arranged on pedestal 1 for placing the electronics of liquid container 14
Balance 15.Using electronic balance 15 instead of force-sensing sensor, tension value can be directly measured, that electronic balance 15 weighs is accurate,
Precision height, convenient reading, enormously simplify the calculating process of experimental data, thus are effectively simplified measuring process.
The present embodiment is it is further preferred that as shown in figure 3, level detection device is arranged to triangular sheets 16, triangle
Thin plate 16 is provided centrally with level meter 17, detects to the levelness of hanging ring 2.In the detection process, it need to only be placed
Above hanging ring 2, after the level calibration of hanging ring 2 is completed, next step operation can be carried out by directly removing triangular sheets 16, be made
2 level calibration process of hanging ring is simple, easy to operate.
The present embodiment is it is further preferred that be provided with the saturating of the periphery for being disposed around liquid container 14 on electronic balance 15
Bright cover 18.
The present embodiment is it is further preferred that be respectively arranged with leveling bolt 19 at each angle of pedestal 1.It is arranged on pedestal 1
Leveling bolt 19 levels entire instrument, is further ensured that the levelness of pedestal, reduces measurement error.
The use process of the present embodiment are as follows:
1, hanging ring levels: the length stretched out by the release of rotation adjusting rod 6 or withdrawal lifting rope 4, so that the length of three lifting ropes 4
It is short consistent, the gradient of hanging ring 2 is adjusted, level meter 17 is put on hanging ring, observes the minute bubbles position in level meter 17
In the center of level meter, then prove that hanging ring 2 has been adjusted to horizontality, then using the first clamping screw 7 to adjusting rod 6 into
Row locking, makes hanging ring 2 be able to maintain the levelness adjusted.
2, fluid to be measured prepares: being put into testing liquid in liquid container 14, and liquid container 14 is placed in electronics
On balance 15.Translucent cover 18 is placed, is influenced with guaranteeing hanging ring 2 and liquid level not by the external world.Avoid liquid and hanging ring 2 because
The external world influences and shakes, and causes the problem of measurement result inaccuracy.
3, measure: turn adjusting knob 12 makes adjusting knob 12 that gear 11 be driven to rotate, and gear 11 is nibbled with rack structure 13
Transmission is closed, drives the overall structure of hanging scaffold 5 and hanging ring 2 to move downward, is completely submerged in hanging ring 2 in testing liquid.
4, at this point, being " 0 " by 15 degree setting of electronic balance, adjusting knob 12 is reversely rotated, slowly increase hanging ring 2,
Electronic balance 15 shows the negative sense reading that absolute value reading is gradually increased.Until reading reading m when liquid film has just turned off on hanging ring 2
Value, then testing liquid tension value is F=mg.
5, repeatedly F average value is sought in measurement.
6, calculating strain theory formula F=π (D is utilized1+D2) α, acquiring this experimental liquid surface tension coefficient is α=mg/ π
(D1+D2)。
The application simple, accurately can be adjusted the levelness of hanging ring, reduce the error of measurement result, the application
It is accurately controlled hanging ring lifting by longitudinal driving mechanism, is capable of increasing the stroke of hanging ring.It is fixed that the application improves current instrument
The inaccurate problem of mark, hanging ring levelness are not easy the problem of adjusting, overcome influence of the external shock to measurement during membrane, change
The problem small into former instrument lifting platform stroke.
The application structure is simple, and operation is easy, and measures liquid surface tension coefficient for the fields such as scientific research and teaching and provides
A kind of simple and reliable instrument.
Embodiment two
The difference between this embodiment and the first embodiment lies in the structure of above-mentioned longitudinal driving mechanism is different, in the present embodiment
Longitudinal driving mechanism is equipped with driving tooth in vertical sleeve 21 as shown in figure 4, including being provided with vertical sleeve 21 on above-mentioned lateral frame 9
The knob 23 that wheel 22 and driving driving gear 22 rotate, 5 upper end of hanging scaffold are equipped with the rack gear 24 for engaging with driving gear 22,
The guide groove that tight fit is oriented to rack gear 24 is provided on the inner tube wall of vertical sleeve 21.Guide groove and 24 tight fit of rack gear can be into
Stablize the position of the guarantee rack gear of one step in a vertical direction.
Embodiment three
The present embodiment is that the structure of above-mentioned longitudinal driving mechanism is different from the difference of the above embodiments, the present embodiment
Another longitudinal driving mechanism is provided, as shown in figure 5, perpendicular fixed frame 31 is arranged to screw structure, fixed frame 31 is erected and rotates
It is assemblied on pedestal 1, it is fixed by connecting rod 33 to be provided with ball nut 32, hanging scaffold 5 and ball nut 32 on perpendicular fixed frame 31
Connection, the lower end of ball nut is provided with lock piece 34.
It is further preferred that being fixedly installed guide rod 35 on pedestal 1, moved down on one end of connecting rod 33 and guide rod 35
Dynamic assembly, further increases integrally-built stability.
The present embodiment can drive hanging ring 2 to move up and down by driving perpendicular fixed frame 31 to rotate.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure transformation made based on the specification and figures of the utility model, it is relevant to be applied directly or indirectly in other
Technical field is included in the scope of patent protection of the utility model.
Claims (9)
1. a kind of liquid surface stress coefficient measuring instrument, including pedestal, hanging ring, it is provided with perpendicular fixed frame on the pedestal, it is special
Sign is that the hanging ring is suspended on hanging scaffold by lifting rope, and the lifting rope is arranged to uniformly distributed along the circumferential direction of the hanging ring
At least three, the position that the lifting rope is corresponded on the hanging scaffold is provided with adjusting rod, and the upper end of the lifting rope is wrapped in the tune
On pole, it is provided on the hanging scaffold by the first clamping screw of adjusting rod locking opposite with the hanging scaffold, described erect is consolidated
Determine to be provided with the longitudinal driving mechanism for driving the hanging ring to move up and down on frame, is detachably placed with horizontal inspection on the hanging ring
Device is surveyed, the liquid surface stress coefficient measuring instrument further includes the measuring device for measuring the hanging ring stress.
2. liquid surface stress coefficient measuring instrument according to claim 1, which is characterized in that the longitudinal driving mechanism packet
The upper end for including the hanging scaffold is equipped with sleeve, lateral frame is provided on the perpendicular fixed frame, the front end of the lateral frame is provided with
Secondary perpendicular support, the sleeve are set in the secondary perpendicular support, and gear, the gear are rotatably equipped on the side wall of the sleeve
It is intracavitary in the sleeve, the adjusting knob being fixedly connected with the gear, the pair are provided on the outside of the sleeve
It is provided with the rack structure with the gear engaged transmission on the side wall of perpendicular support, is provided on the side wall of the sleeve for inciting somebody to action
Second clamping screw of the sleeve and the secondary perpendicular support locking.
3. liquid surface stress coefficient measuring instrument according to claim 1, which is characterized in that the longitudinal driving mechanism packet
It includes and is provided with lateral frame on the perpendicular fixed frame, vertical sleeve is provided on the lateral frame, be equipped in the vertical sleeve actively
Gear and the knob of the driving driving gear rotation, the hanging scaffold upper end is equipped with the tooth for engaging with the driving gear
Item is provided with the guide groove with rack gear guiding tight fit on the inner tube wall of the vertical sleeve.
4. liquid surface stress coefficient measuring instrument according to claim 1, which is characterized in that the longitudinal driving mechanism packet
The perpendicular fixed mount setting is included into screw structure, the perpendicular fixed frame rolling assembling on the base, on the perpendicular fixed frame
It is provided with ball nut, the hanging scaffold is fixed by the connecting rod with the ball nut and connect, and the lower end of the ball nut is set
It is equipped with lock piece.
5. liquid surface stress coefficient measuring instrument according to claim 4, which is characterized in that be fixedly installed on the pedestal
There is guide rod, one end of the connecting rod and the guide rod move up and down assembly.
6. liquid surface stress coefficient measuring instrument described in any claim according to claim 1~5, which is characterized in that institute
Stating measuring device is setting on the base for placing the electronic balance of liquid container.
7. liquid surface stress coefficient measuring instrument according to claim 6, which is characterized in that the level detection device is set
Triangular sheets are set to, the triangular sheets are provided centrally with level meter.
8. liquid surface stress coefficient measuring instrument according to claim 7, which is characterized in that be arranged on the electronic balance
There is the translucent cover of the periphery for being disposed around the liquid container.
9. liquid surface stress coefficient measuring instrument according to claim 8, which is characterized in that punish at each angle of the pedestal
Leveling bolt is not provided with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820867042.9U CN208187903U (en) | 2018-05-28 | 2018-05-28 | A kind of liquid surface stress coefficient measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820867042.9U CN208187903U (en) | 2018-05-28 | 2018-05-28 | A kind of liquid surface stress coefficient measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208187903U true CN208187903U (en) | 2018-12-04 |
Family
ID=64429092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820867042.9U Expired - Fee Related CN208187903U (en) | 2018-05-28 | 2018-05-28 | A kind of liquid surface stress coefficient measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208187903U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991131A (en) * | 2019-03-12 | 2019-07-09 | 华中科技大学 | Surface tension constant determines model and method and method for surface tension measurement |
| CN110376103A (en) * | 2019-07-10 | 2019-10-25 | 金华职业技术学院 | A kind of Surface Tension of Liquid Drops test device |
| CN111175090A (en) * | 2020-03-12 | 2020-05-19 | 徐州蓝湖信息科技有限公司 | Liquid sample equant instrument |
-
2018
- 2018-05-28 CN CN201820867042.9U patent/CN208187903U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991131A (en) * | 2019-03-12 | 2019-07-09 | 华中科技大学 | Surface tension constant determines model and method and method for surface tension measurement |
| CN109991131B (en) * | 2019-03-12 | 2020-08-04 | 华中科技大学 | Model and method for determining surface tension constant, and surface tension measuring method |
| CN110376103A (en) * | 2019-07-10 | 2019-10-25 | 金华职业技术学院 | A kind of Surface Tension of Liquid Drops test device |
| CN110376103B (en) * | 2019-07-10 | 2024-04-09 | 金华职业技术学院 | Liquid drop surface tension testing device |
| CN111175090A (en) * | 2020-03-12 | 2020-05-19 | 徐州蓝湖信息科技有限公司 | Liquid sample equant instrument |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181204 Termination date: 20200528 |