CN214408555U - Multi-pipe liquid viscosity coefficient measuring device - Google Patents
Multi-pipe liquid viscosity coefficient measuring device Download PDFInfo
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- CN214408555U CN214408555U CN202120189407.9U CN202120189407U CN214408555U CN 214408555 U CN214408555 U CN 214408555U CN 202120189407 U CN202120189407 U CN 202120189407U CN 214408555 U CN214408555 U CN 214408555U
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- electromagnetic sensor
- measuring
- measuring device
- steel ball
- liquid viscosity
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- 239000007788 liquid Substances 0.000 title claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000005259 measurement Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- 238000013213 extrapolation Methods 0.000 description 3
- 239000004359 castor oil Substances 0.000 description 2
- 235000019438 castor oil Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- -1 for example Natural products 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a multitube liquid viscosity coefficient measuring device, which comprises a bottom plate, a bracket fixedly arranged on the bottom plate, a lantern ring fixedly arranged on the bracket, a graduated cylinder detachably sleeved on the lantern ring, a connecting rod vertically and fixedly arranged on the bottom plate, a first electromagnetic sensor and a second electromagnetic sensor vertically arranged on the connecting rod, and a timer electrically connected with the first electromagnetic sensor and the second electromagnetic sensor; the measuring cylinder is internally provided with liquid to be measured, and the upper end of the measuring cylinder is sleeved with a plug body; the plug body is provided with a through hole for placing a steel ball into the vector cylinder; the first electromagnetic sensor is arranged above the second electromagnetic sensor, and the diameters of the measuring cylinders are unequal; when measuring, each measuring cylinder sleeve is sequentially sleeved in the first electromagnetic sensor and the second electromagnetic sensor, then the steel ball is placed in the through hole, the steel ball sequentially passes through the first electromagnetic sensor and the second electromagnetic sensor, the timer displays the used time, and the measuring device has the advantages of being high in measuring precision, convenient to measure and fast.
Description
Technical Field
The utility model belongs to a measuring device especially indicates a multitube liquid viscosity coefficient measuring device.
Background
The method has great significance in measuring the viscosity coefficient of the liquid in various fields such as engineering technology, production technology, teaching, scientific research, medicine and the like. The multi-tube liquid viscosity coefficient measuring instrument is a physical experiment instrument and is mainly used for experiment teaching of measuring liquid viscosity coefficients by a falling ball method in basic physical experiments of colleges and universities. The aim of developing the experimental teaching is as follows: 1. the students can know the principle of measuring the liquid viscosity coefficient by the Stokes formula and master the use conditions of the liquid; 2. the viscosity coefficient of the liquid is determined by learning a falling ball method; 3. the experimental data were processed by extrapolation.
The stokes law is premised on the fact that the liquid moves in unlimited extension, however, in the prior art, experiments are carried out in a measuring cylinder with a fixed length and a fixed width in a laboratory, in addition, the experiment error is large because a single tube is generally used for measurement, and the condition that the stokes law is established cannot be met. In addition, in the prior art, the method for measuring the falling time of the small balls in the multiple pipes adopts a stopwatch to time, and has the problems of inaccurate judgment of the current state of the small balls, inaccurate manual timing, complicated manual operation and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned problem, provide a multitube liquid viscosity coefficient measuring device that measurement accuracy is high, measure convenient and swift.
The purpose of the utility model can be achieved by adopting the following technical scheme:
a multi-tube liquid viscosity coefficient measuring device comprises a bottom plate, a bracket fixedly arranged on the bottom plate, a plurality of lantern rings fixedly arranged on the bracket and distributed along the horizontal direction of the bracket, a plurality of measuring cylinders detachably sleeved on the lantern rings, a connecting rod vertically and fixedly arranged on the bottom plate, a first electromagnetic sensor and a second electromagnetic sensor vertically arranged on the connecting rod, and a timer electrically connected with the first electromagnetic sensor and the second electromagnetic sensor; the measuring cylinder is internally provided with liquid to be measured, and the upper end of the measuring cylinder is sleeved with a plug body; the plug body is provided with a through hole for placing a steel ball into the vector cylinder; the first electromagnetic sensor is arranged above the second electromagnetic sensor, and the diameters of the measuring cylinders are unequal; during measurement, the measuring cylinder sleeves are sequentially sleeved in the first electromagnetic sensor and the second electromagnetic sensor, then the steel ball is placed in the through hole, the steel ball sequentially passes through the first electromagnetic sensor and the second electromagnetic sensor, and the timer displays the used time.
As a preferable scheme, indicator lights for indicating that the steel ball is detected are arranged on the first electromagnetic sensor and the second electromagnetic sensor.
As a preferable scheme, a leveling instrument for leveling is arranged on the bottom plate.
Preferably, the through hole is formed in the center of the plug body.
As a preferable scheme, the support comprises a vertical rod fixedly installed on the bottom plate, and a connecting plate horizontally and fixedly installed on the vertical rod, and the measuring cylinder is fixedly installed on the connecting plate.
Preferably, the steel ball has a diameter of 2 to 3 mm.
Preferably, the measuring cylinders are 4, and the diameters of the 4 measuring cylinders are 15cm, 25cm, 35cm and 45cm respectively.
Preferably, the first electromagnetic sensor and the second electromagnetic sensor are surround-type electromagnetic sensors.
Implement the utility model discloses, following beneficial effect has:
the utility model discloses can dismantle the cover with the graduated flask and locate the cover intra-annular, can stabilize and erect the graduated flask on the bottom plate fast, it is simple and convenient to dismantle and install, greatly made things convenient for getting of graduated flask and put and wash, and from top to bottom set up two electromagnetic sensor through in the graduated flask outside, fall to a certain electromagnetic sensor when the steel ball, the steel ball is sensed, the face contact starts having been realized, the time measurement's precision has been promoted, and then improved and carried out measuring precision to the viscous coefficient of the liquid that awaits measuring, the measuring accuracy is high, measure convenient and swift advantage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the multi-tube liquid viscosity coefficient measuring device of the present invention.
Fig. 2 is a rear view of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1 and 2, the present embodiment relates to a multi-tube liquid viscosity coefficient measuring device, which includes a base plate 1, a bracket 2 fixedly mounted on the base plate 1, a plurality of collars 3 fixedly mounted on the bracket 2 and distributed along a horizontal direction of the bracket 2, a plurality of measuring cylinders 4 detachably sleeved on the collars 3, a connecting rod 5 vertically and fixedly mounted on the base plate 1, a first electromagnetic sensor 6 and a second electromagnetic sensor 7 vertically mounted on the connecting rod 5, and a timer 8 electrically connected to the first electromagnetic sensor 6 and the second electromagnetic sensor 7; the liquid to be measured is arranged in the measuring cylinder 4, and the upper end of the measuring cylinder 4 is sleeved with a plug body 9; the plug body 9 is provided with a through hole 91 for placing a steel ball into the measuring cylinder 4; the first electromagnetic sensor 6 is arranged above the second electromagnetic sensor 7, and the diameters of the measuring cylinders 4 are unequal; during measurement, the measuring cylinders 4 are sequentially sleeved in the first electromagnetic sensor 6 and the second electromagnetic sensor 7, the steel ball is placed in the through hole 91, the steel ball sequentially passes through the first electromagnetic sensor 6 and the second electromagnetic sensor 7, and the timer 8 displays the used time. An electromagnetic sensor is a sensor that converts a physical quantity to be measured into an induced electromotive force, and is also called an electromagnetic induction type or electrodynamic type sensor.
And a leveling instrument for leveling is arranged on the bottom plate 1. The base plate 1 is leveled by a level prior to measurement. When carrying out the timing measurement, will fill with measuring cylinder 4 of the different diameters of the liquid that awaits measuring and take out from the lantern ring 3 in proper order, then vertical placing in electromagnetic sensor in proper order, the bottom of measuring cylinder 4 is placed on bottom plate 1's surface this moment to guarantee that measuring cylinder 4 is in vertical state. Putting the steel ball into the measuring cylinder 4 containing the liquid to be measured through the through hole 91, observing the falling of the steel ball, and marking the area of the steel ball moving at a constant speed; then, the distance between the first electromagnetic sensor 6 and the second electromagnetic sensor 7 is adjusted so as to be set as a test distance; then, the steel ball is put into the measuring cylinder 4 from the through hole 91; when the steel ball passes through the first electromagnetic sensor 6, the timer 8 starts to time; when the steel ball passes through the second electromagnetic sensor 7, the timer 8 finishes timing, so as to obtain the falling time of the steel ball in the liquid (for example, castor oil, for example, castor oil) from the first electromagnetic sensor 6 to the second electromagnetic sensor 7, and further, the viscosity coefficient of the liquid can be calculated.
This device can dismantle the cover with graduated flask 4 and locate in the lantern ring 3, can be stable and erect graduated flask 4 on bottom plate 1 fast, dismantle with the installation simple and convenient, greatly made things convenient for getting of graduated flask 4 and put and wash to through set up two electromagnetic sensor from top to bottom in the graduated flask 4 outside, fall to a certain electromagnetic sensor when the steel ball, the steel ball is sensed, has realized the face contact and has started, has promoted the time measuring precision.
And indicator lights 10 for displaying that the steel ball is detected are arranged on the first electromagnetic sensor 6 and the second electromagnetic sensor 7.
The through hole 91 is arranged at the central position of the plug body 9, so that the steel ball can fall in the middle of liquid and is prevented from colliding with the wall. The diameter of the through hole 91 is larger than that of the steel ball.
The support 2 comprises a vertical rod 21 fixedly installed on the bottom plate 1 and a connecting plate 22 horizontally and fixedly installed on the vertical rod, and the measuring cylinder 4 is fixedly installed on the connecting plate 22. The positions of the two electromagnetic sensors on the vertical rod 21 can be adjusted accordingly according to the area of the steel ball falling at a constant speed in the measuring cylinder 4.
The diameter of the steel ball is 2-3 mm. The measuring cylinders 4 are 4, and the diameters of the 4 measuring cylinders 4 are 15cm, 25cm, 35cm and 45cm respectively. The first electromagnetic sensor 6 and the second electromagnetic sensor 7 are surround type electromagnetic sensors.
The structure adopts the method of timing the falling time of a plurality of measuring cylinders with different pipe diameters, thereby obtaining the condition of 'infinite extension' of liquid required by the Stokes law by adopting an extrapolation method. The principle of the extrapolation is as follows: measuring according to the falling time of measuring cylinders with different pipe diameters in sequence, and utilizing the linear relation between time (t) and derivative (1/D) of the pipe diameters, namely taking t as an ordinate axis and 1/D as an abscissa axis, drawing a straight line according to experimental data, prolonging the intersection of the straight line and the ordinate axis, wherein the intercept corresponds to t when 1/D is equal to 00And 1/D ═ 0 corresponds to D → ∞, so that the time t required for the small balls to fall through the distance h at a constant speed in the liquid with the infinite extent can be pushed out by the method0。
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (8)
1. A multi-tube liquid viscosity coefficient measuring device is characterized by comprising a bottom plate, a bracket fixedly arranged on the bottom plate, a plurality of lantern rings fixedly arranged on the bracket and distributed along the horizontal direction of the bracket, a plurality of measuring cylinders detachably sleeved on the lantern rings, a connecting rod vertically and fixedly arranged on the bottom plate, a first electromagnetic sensor and a second electromagnetic sensor vertically arranged on the connecting rod, and a timer electrically connected with the first electromagnetic sensor and the second electromagnetic sensor; the measuring cylinder is internally provided with liquid to be measured, and the upper end of the measuring cylinder is sleeved with a plug body; the plug body is provided with a through hole for placing a steel ball into the vector cylinder; the first electromagnetic sensor is arranged above the second electromagnetic sensor, and the diameters of the measuring cylinders are unequal; during measurement, the measuring cylinder sleeves are sequentially sleeved in the first electromagnetic sensor and the second electromagnetic sensor, then the steel ball is placed in the through hole, the steel ball sequentially passes through the first electromagnetic sensor and the second electromagnetic sensor, and the timer displays the used time.
2. The multi-tube liquid viscosity coefficient measuring device according to claim 1, wherein indicator lights for indicating that the steel balls are detected are provided on the first electromagnetic sensor and the second electromagnetic sensor.
3. A multi-tube liquid viscosity index measuring device according to claim 1, wherein a level gauge for leveling is provided on the bottom plate.
4. A multi-tube liquid viscosity coefficient measuring device according to claim 1, wherein the through hole is provided at a central position of the plug body.
5. The apparatus of claim 1 wherein the frame comprises a vertical rod fixedly mounted to the base plate and a connecting plate fixedly mounted horizontally to the vertical rod, the graduated cylinder being fixedly mounted to the connecting plate.
6. A multi-tube liquid viscosity coefficient measuring device as claimed in claim 1, wherein the steel ball has a diameter of 2 to 3 mm.
7. A multi-tube liquid viscosity index measuring device according to claim 1, wherein the measuring cylinders are provided in 4 number, and the diameters of the 4 measuring cylinders are 15cm, 25cm, 35cm and 45cm, respectively.
8. A multi-tube liquid viscosity coefficient measuring device according to claim 1 or 2, wherein the first electromagnetic sensor and the second electromagnetic sensor are of a surround type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120189407.9U CN214408555U (en) | 2021-01-22 | 2021-01-22 | Multi-pipe liquid viscosity coefficient measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120189407.9U CN214408555U (en) | 2021-01-22 | 2021-01-22 | Multi-pipe liquid viscosity coefficient measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214408555U true CN214408555U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120189407.9U Expired - Fee Related CN214408555U (en) | 2021-01-22 | 2021-01-22 | Multi-pipe liquid viscosity coefficient measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214408555U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114428038A (en) * | 2021-12-31 | 2022-05-03 | 陕西科技大学 | Experimental device for measuring liquid viscosity coefficient by falling ball method |
-
2021
- 2021-01-22 CN CN202120189407.9U patent/CN214408555U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114428038A (en) * | 2021-12-31 | 2022-05-03 | 陕西科技大学 | Experimental device for measuring liquid viscosity coefficient by falling ball method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211015 |
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| CF01 | Termination of patent right due to non-payment of annual fee |