CN1055998C - Method for testing constant pressure speed variable capillary viscosity - Google Patents
Method for testing constant pressure speed variable capillary viscosity Download PDFInfo
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- CN1055998C CN1055998C CN 95115461 CN95115461A CN1055998C CN 1055998 C CN1055998 C CN 1055998C CN 95115461 CN95115461 CN 95115461 CN 95115461 A CN95115461 A CN 95115461A CN 1055998 C CN1055998 C CN 1055998C
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- 238000012360 testing method Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 13
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000008280 blood Substances 0.000 claims abstract description 5
- 210000004369 blood Anatomy 0.000 claims abstract description 5
- 238000001595 flow curve Methods 0.000 claims abstract description 5
- 230000005693 optoelectronics Effects 0.000 claims description 23
- 238000010998 test method Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 239000012085 test solution Substances 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 230000017531 blood circulation Effects 0.000 abstract description 2
- 201000010099 disease Diseases 0.000 abstract description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 230000003213 activating effect Effects 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 239000003814 drug Substances 0.000 abstract 1
- 230000000144 pharmacologic effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 241000218691 Cupressaceae Species 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Abstract
The present invention relates to a testing method for constant-pressure speed-change capillary viscosity. A slope angle of a capillary is adjusted within a range between 0 to 90 DEG at a constant pressure and a constant temperature; flow speeds are changed, flowing time is recorded, data is input to a microcomputer, a flow curve is displayed, and the viscosity of each shear rate is printed. Newton and non-newtonian fluids can be measured; the influences of inlet lengths, surface tension, fahraeus-lindquist effects and wall hanging of liquid can be eliminated. The present invention has the advantages of few used samples, wide measuring ranges, high precision, high repeatability, simple structure, easy operation, low cost, etc., and the present invention can be widely used for the viscosity measurement of foodstuff, chemical industry, medicines and various valuable materials; the present invention is particularly suitable for medical diagnoses, such as 'high viscosity disease', etc., and pharmacological experiments of activating blood circulation to dissipate blood stasis.
Description
The present invention relates to the liquid viscosity method of testing, refer to that especially a kind of is the capillary viscosity method of testing of its feature with constant voltage, speed change.
The L shaped detector tube of the general employing of capillary viscosimeter at present is an electric switch with the tinsel, with fixed constant temperature water bath constant temperature.This structural disadvantages:
1. constant voltage not can not the regulated at will flow velocity.Strictness is said, only can survey Newtonian fluid, can not survey non-Newtonian fluid.
2. owing to surface tension effects, wire electrode and liquid level contact portion are difficult for disconnecting immediately, influence measuring accuracy.
3. the horizontal tube in the L type detector tube, internal diameter are usually less than 1mm, and because of being subjected to method one woods effects, same duplicate samples is measured with the kapillary of different inner diameters, and gained is difference as a result.
4. L type detector tube is fixed in the constant temperature water bath, and every survey finishes a sample, and kapillary can not take out cleaning, sterilization, oven dry.When continuous test sample, be subject to the influence of previous sample and liquid wall built-up.
The objective of the invention is to overcome above-mentioned shortcoming, a kind of capillary viscosity method of testing is provided, make it have the precision height, good reproducibility, equipment is simple, and is easy to operate, and low cost and other advantages can be tested Newtonian fluid, can test non-Newtonian fluid again.
Used technical scheme: capillary viscosity method of testing of the present invention:
Comprise
(1) kapillary,
(2) support of fine setting angle of revolution,
(3) constant temperature oven,
(4) time device,
It is characterized in that:
A. constant-pressure conditions: use the kapillary of pore center line as straight line and pore equal diameters (aperture even thickness);
B. method for changing speed: the kapillary that will be placed in the constant temperature oven is fixedly arranged on the support of fine setting angle of revolution, regulates the kapillary angle of inclination, changes flow velocity, the flowing time during the record different in flow rate.
Use the step of described method of testing to be:
(1) kapillary of use pore diameter＞1mm is drawn the long fluid column of the about 10cm of sample liquid at every turn,
(2) kapillary is inserted constant temperature oven, is fixedly arranged on the support of fine setting angle of revolution,
(3) regulate the rotary support angle, change test solution flow rate in the kapillary,
The test blood: the angle of inclination between 0-25 °,
The test low-viscosity (mobile) liquid (for example water), the angle of inclination between 0-10 °,
The test high viscosity liquid, the angle of inclination between 0-90 °,
(4) flowing time under the record different angles:
(5) microcomputer analysis shows: with the flowing time input microcomputer that is write down, draw flow curve, print the viscosity under the various shear rates,
(6) behind sample of mensuration, take off former kapillary, another kapillary that changes the outfit repeats the above-mentioned steps test.
In one embodiment, described time device is four groups of optoelectronic switches, is arranged at the centre of gyration both sides of support, and every side is provided with 2 groups.
(1) two-way flow, two-way clocking (when the capillary inner diameter uniformity, using)
Liquid stream flows from right to left, and the two groups of optoelectronic switches in the right cut out, the two groups of optoelectronic switch records in the left side;
Liquid stream flows from left to right, and the two groups of optoelectronic switches in the left side cut out, the two groups of optoelectronic switch records in the right;
Simultaneously the two-way flow data are analyzed.
(2) uniflux, nonreturn recording (when the isometrical precision in kapillary aperture is relatively poor, using): after selected test solution flows to, close two groups of optoelectronic switches of upstream one side, use two groups of optoelectronic switch records of downstream one side, only the uniflux data are analyzed.
Capillary viscosity method of testing of the present invention has following actively useful effect:
1. can constant voltage, adjustable speed:
Kapillary is the yi word pattern long tube, and the internal diameter even thickness, and selected when angle, and when maintaining static, in the flow process, fluid column two ends pressure reduction remains constant liquid, thereby reaches the constant voltage purpose in pipe.Angle of inclination capillaceous, as required, the energy regulated at will changes the liquid in pipe flow velocity.Import microcomputer, can measure the flow curve of non-Newtonian fluid well.
2. eliminate the influence of liquid wall built-up:
After sample had been surveyed, capillary energy took out from constant temperature oven, thoroughly cleaned sterilization, processing such as oven dry.Thereby eliminated between the sample and the influence of liquid wall built-up.
3. high efficiency:
Have a plurality of kapillaries simultaneously, accomplish pipe of a sample, after having surveyed continuously, processing such as unify to clean, increase work efficiency greatly.Common viscosity meter was generally surveyed 10 samples in 4 hours, and viscosity test method of the present invention can be surveyed 120 samples.
4. few with the sample amount:
Common viscosity meter, every duplicate samples is used the 1-1.3ml test solution at least, this viscosity meter is only used 0.2ml, and after sample surveyed, still can collect in addition and use it for anything else, saved sample consumption greatly, the viscosity of the most suitable survey precious materials is diagnosed infant's " high sticking disease " and is made pharmacology experiment usefulness promoting blood circulation and removing blood stasis with toy.
5. function is strong:
Common capillary viscosimeter can only be surveyed Newtonian fluid, and rotary viscosimeter can only be surveyed non-Newtonian fluid.Viscosity test method of the present invention has above-mentioned two kinds of functions concurrently: the equal energy measurement of newton and non-Newtonian fluid.
6. null method one woods effect:
Common capillary viscosimeter caliber is usually less than 1mm (by structures shape).Thereby generation method one woods effect, promptly viscosity changes with the variation of caliber, and the viscosity number that caliber is measured more for a short time is littler.Owing to make the requirement that technology capillaceous does not reach the caliber unanimity, therefore same duplicate samples is with different apparatus measures difference as a result.Viscosity test method capillary inner diameter＞1mm of the present invention generally adopts about 2mm, thereby has eliminated the influence of method one woods effect.
7. eliminate the inlet effect length:
Liquid flows in straight type long tube, does not have caliber to change, and before arriving optoelectronic switch is arranged one period run-up stage, can form the respectful leaf of sufficient cypress and flow.
8. measurement range is wide:
As long as the equal energy measurement of fluid that can in pipe, flow.Measure the little liquid of viscosity, use low-angle.Measure the big fluid of viscosity, use wide-angle, until 90 degree.
Owing to overcome above-mentioned shortcoming, compare with other tested viscosity methods, the present invention has the precision height, and good reproducibility is simple in structure, and is easy to operate, and low cost and other advantages is convenient to promote at basic hospital.
Now be described further in conjunction with the accompanying drawings with preferred embodiment:
Fig. 1 is front elevation for the structural drawing of a kind of proving installation embodiment of use the inventive method.
Fig. 2 is same Fig. 1, is its vertical view.
Fig. 3 is the fundamental diagram of Fig. 1 device.
Introduce this proving installation structure and principle of work below in conjunction with accompanying drawing: yi word pattern kapillary 9 usefulness light transmissive materials are made, internal diameter＞1mm, and even thickness is about the about 30cm of length.Kapillary 9 crosses in the constant temperature oven 7, and its position is supported by the aperture 8 at constant temperature oven 7 two ends, and kapillary 9 can take out from hole 8 or insert.Four groups of optoelectronic switches 1,2,3,4 of being made up of photoresistance and light emitting diode place the upstream and downstream both sides of kapillary 9, between the optoelectronic switch 1-2 with 3-4 between distance equate i.e. L
1,2=L
3,4And fixed distance is constant.Constant temperature oven 7 temperature are adjustable, automatic constant-temperature, and its design feature should be convenient to kapillary and take out except that ensureing measuring condition constant temperature, inserts, and does not influence the angle variation of kapillary 9.So adopt air constant temperature comparatively desirable, (also can adopt the constant temperature water bath case,) the axle 6 back outer wall centre position that is fixed on constant temperature oven 7, constant temperature oven 7 flexibly connects by axle 6 and axle sleeve 5, rotary fine adjustment handwheel 16, through inching gear pair 17, constant temperature oven 7 rotates in the 0-90 degree angular region in sagittal plane around axle 6.Angle of inclination capillaceous is by the position display of pointer 11 on index dial.Pointer 11 is fixed in the outer rear wall centre position of constant temperature oven 7, and index dial 12 is by plate rail 13 and 14 vertical connections of base, and meter full scale is according to the purposes decision of viscosity meter.If survey blood viscosity, meter full scale is between 0 degree-25 degree, if survey water, between 0 degree-16 degree.Survey high viscous fluid, meter full scale can suitably increase, until 90 degree.Every groove is 1 degree angle.Pillar 10 is vertical with base 14.
At first regulate zero point with preceding, kapillary 9 is horizontal.During measurement, kapillary 9 is directly inserted in the sample liquid, draw the long fluid column of 10cm (about 0.2ml), the sampling back is inserted in the constant temperature oven 7 by hole 8, constant temperature.Adjust the fluid column position, make its upstream extremity that is in optoelectronic switch, see figure three.During measurement, select certain angle as required, rotary fine adjustment handwheel 16 tilts kapillary 9, and liquid begins to flow, and through one section run-up, fully forms the respectful leaf of cypress and flows.The fluid column leading peak writes down flowing time successively by the two groups of optoelectronic switches in downstream.As: when fluid column flows to the left side from the right side.3,4 do not work, 1,2 clock.And then the selection certain angle, fluid column is flowed to the right from the left side, do not work this moment 1,2, and 3,4 clock.By that analogy, round flowing about fluid column.When flowing to the right, 1,2 do not work, 3,4 records.When flowing left, 3,4 do not work, 1,2 records.Obtain the flowing time under the different angles thus.The input microcomputer is drawn flow curve.
If the requirement that the kapillary manufacture craft does not reach even thickness, caliber has certain taper, for reducing measuring error, can turn off the two groups of optoelectronic switches in upstream, only measures with the two groups of optoelectronic switches in downstream.Though folk prescription is slow to measuring speed, can eliminate systematic error, improve precision.
Kapillary is longer, when the fluid column leading peak passes through last optoelectronic switch, still stays in the pipe, does not run off.After having surveyed a sample, kapillary 9 is taken out from constant temperature oven 8, still can stay after sample takes out to use it for anything else.Thoroughly clean then, sterilization, oven dry kapillary, standby.
Fig. 1 is to a kind of embodiment that Figure 3 shows that the device of implementing the inventive method, and is simple in structure, easy to operate.Method of testing and principle of work also can be designed other device for carrying out said according to the present invention, do not exemplify one by one.
Be to improve measuring accuracy, when implementing method of testing of the present invention, described support angle of revolution shows and speed change flows clocks and shows and also can adopt other hyundai electronicses to measure display device that this instructions does not exemplify one by one.
Claims (2)
1. a method for testing constant pressure speed variable capillary viscosity comprises
(1) kapillary,
(2) support of fine setting angle of revolution,
(3) constant temperature oven,
(4) time device,
It is characterized in that:
A. constant-pressure conditions: use the kapillary of pore center line as straight line and pore equal diameters (aperture even thickness);
B. method for changing speed: the kapillary that will be placed in the constant temperature oven is fixedly arranged on the support of fine setting angle of revolution, regulates the kapillary angle of inclination, changes flow velocity, the flowing time during the record different in flow rate.
Use the step of described method of testing to be:
(1) kapillary of use pore diameter＞1mm is drawn the long fluid column of the about 10cm of sample liquid at every turn,
(2) kapillary is inserted constant temperature oven, is fixedly arranged on the support of fine setting angle of revolution,
(3) regulate the rotary support angle, change test solution flow rate in the kapillary,
The test blood: the angle of inclination between 0-25 °,
The test low-viscosity (mobile) liquid (for example water), the angle of inclination between 0-10 °,
The test high viscosity liquid, the angle of inclination between 0-90 °,
(4) flowing time under the record different angles,
(5) microcomputer analysis shows: with the flowing time input microcomputer that is write down, draw flow curve, print the viscosity under the various shear rates,
(6) behind sample of mensuration, take off former kapillary, another kapillary that changes the outfit repeats the above-mentioned steps test.
2. capillary viscosity method of testing according to claim 1 is characterized in that: described time device is four groups of optoelectronic switches, is arranged at the centre of gyration both sides of support, and every side is provided with 2 groups,
(1) two-way flow, two-way clocking (when the capillary inner diameter uniformity, using):
Liquid stream flows from right to left, and the two groups of optoelectronic switches in the right cut out, the two groups of optoelectronic switch records in the left side,
Liquid stream flows from left to right, and the two groups of optoelectronic switches in the left side cut out, the two groups of optoelectronic switch records in the right,
Simultaneously the two-way flow data are analyzed;
(2) uniflux, nonreturn recording (when the isometrical precision in kapillary aperture is relatively poor, using): after selected test solution flows to, close two groups of optoelectronic switches of upstream one side, use two groups of optoelectronic switch records of downstream one side, only the uniflux data are analyzed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95115461 CN1055998C (en) | 1995-09-11 | 1995-09-11 | Method for testing constant pressure speed variable capillary viscosity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95115461 CN1055998C (en) | 1995-09-11 | 1995-09-11 | Method for testing constant pressure speed variable capillary viscosity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1145475A CN1145475A (en) | 1997-03-19 |
| CN1055998C true CN1055998C (en) | 2000-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95115461 Expired - Fee Related CN1055998C (en) | 1995-09-11 | 1995-09-11 | Method for testing constant pressure speed variable capillary viscosity |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2527131C1 (en) * | 2013-01-14 | 2014-08-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный педагогический университет им. К.Д. Ушинского" (ЯГПУ им. К.Д. Ушинского) | Capillary viscometer |
| CN105628558B (en) * | 2014-11-06 | 2018-05-29 | 中国石油化工股份有限公司 | For measuring the apparatus and method of fracturing liquid rubber-breaking viscosity |
| US10722436B2 (en) | 2015-08-10 | 2020-07-28 | Mary Kay Inc. | Topical compositions |
| CN115855749B (en) * | 2023-02-24 | 2023-05-12 | 深圳市艾润克润滑科技有限公司 | Viscosity tester for lubricating oil production |
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1995
- 1995-09-11 CN CN 95115461 patent/CN1055998C/en not_active Expired - Fee Related
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| CN1145475A (en) | 1997-03-19 |
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Granted publication date: 20000830 Termination date: 20130911 |