CN202216889U - Device for measuring viscosity of highly viscous fluid - Google Patents
Device for measuring viscosity of highly viscous fluid Download PDFInfo
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- CN202216889U CN202216889U CN2011202911631U CN201120291163U CN202216889U CN 202216889 U CN202216889 U CN 202216889U CN 2011202911631 U CN2011202911631 U CN 2011202911631U CN 201120291163 U CN201120291163 U CN 201120291163U CN 202216889 U CN202216889 U CN 202216889U
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Abstract
The utility model discloses a device for measuring viscosity of highly viscous fluid, which is mainly composed of a highly viscous fluid complete turbulence generating device, a rotation speed and torque frequency conversion regulator, a temperature sensor, a data collection system and the like. A high-shearing rotor is directly driven by a motor, high-shearing force is generated during high speed rotation, and highly viscous fluid in a shearing chamber achieves fluidization and reaches complete turbulence. Due to the fact that viscosity of the highly viscous fluid is resistance resisting the fluid from deforming when the fluid receives external force action, the viscosity of the highly viscous fluid is substantially consumption and dissipation of energy from the viewpoint of energy, namely when the fluid receives high-shearing force action, heat is generated due to the friction action and temperature rises and is consumed and dissipated in heat mode. Therefore, the device measures energy consumption and dissipation value of the highly viscous fluid after the highly viscous fluid reaches complete turbulence in the fluid shearing chamber through the data collection system, and effective viscosity value of the highly viscous fluid can be obtained by being combined with other fluid dynamics parameters.
Description
Technical field
The utility model relates to high viscosity fluid, comprises the offset ink of extensive employing in the printing industry and the mobility status of the high viscosity oil in the petroleum industry, is specifically related to a kind of device of measuring highly viscous fluid viscosity.
Background technology
The former wet goods that the widely used glue printing ink of printing industry, petroleum industry are exploited out, its virtual viscosity is very high, usually tens to hundreds of Pas, adopts the traditional detection instrument to be difficult to record its virtual viscosity when mobile.
Fluid viscosity is meant that fluid makes the resistance that time spent opposing printing ink deforms, the frictional resistance between the fluid interior layer that the fluid viscosity that we are often referred to refers to show when fluid receives shear action receiving external force.See that from viewpoint of energy the fluid particularly viscosity of highly viscous fluid comes down to a kind of dissipation of energy, promptly highly viscous fluid receives external force and does the time spent, causes temperature to raise owing to rubbing action produces heat, and is consumed with the mode of heat.When highly viscous fluid reaches the fluidization state, must cause energy dissipation, therefore can define the fluidization state of highly viscous fluid from energy dissipation.The energy of highly viscous fluid turbulence is that the whirlpool body of large scale directly obtains from the exterior mechanical condition; It is the shear stress that turbulent flow generator applies it; Exist energy exchange between the turbulence vortex body of large scale; And further the eddy current body to small scale transmits, and then because viscous effect has caused energy dissipation process, this process finally distributes with the form of heat the microvortex fluid.
Because the energy dissipation of highly viscous fluid in the turbulent flow process finally exhales with the form of heat; The energy that causes highly viscous fluid in turbulence, to dissipate is very big; And dissipative shock wave is very fast; The indoor highly viscous fluid of whole shear has just reached very high temperature in a short period of time, and this just gathers the suspending liquid energy absorbing device for laboratory facilities condition is provided.The temperature field that highly viscous fluid produces owing to energy dissipation in Three dimensional Turbulent distributes and has reflected the distribution of its flow field and turbulence kinetic energy from the side; Because any stirring and mixed process in the chemical industry, in quality and momentum transfer, all with the transmission of energy and heat; Therefore when highly viscous fluid reaches even turbulence; Its heat transferred also must reach equilibrium state, promptly the temperature in whole flow field reach evenly or the speed that changes identical, this is the detection principle of " thermometry ".
The utility model is according to the hydrodynamic characteristic of highly viscous fluid; Designed and developed a kind of device of measuring highly viscous fluid viscosity voluntarily; Temperature variation during the complete turbulent flow of the main test of this device highly viscous fluid and the shearing force of high shear rotor, the highly viscous fluid variation of temperature uses the thermal resistance type temperature sensor probe to gather in the measuring process, along the fluid shear chamber radial direction three sensor probes is installed in the detection; One of them is through the quill shaft of rotor; And the degree of depth of inserting from low to high, and used numerical value is the mean value of several sensors collection value in calculating, and the rotor shearing force then calculates through reading in the variable frequency adjustment device and rotor structure.The development of this device will detect the experimental study means that provide necessary for the rerum natura that China prints with offset ink and high viscosity oil, in engineering practice, have great importance.
Summary of the invention
The purpose of the utility model is to overcome the shortcoming and defect of prior art, and a kind of device that highly viscous fluid is detected with the viscosity of fluids such as offset ink and sticky oil like printing is provided.
The purpose of the utility model realizes through following technical scheme:
A kind of device of measuring highly viscous fluid viscosity; Comprise motor 1, turbulent flow generator, motor frequency conversion device 6, plurality of temperature sensor 8, data collecting card 9, computing machine 10; Said turbulent flow generator by high transmission shaft 2, mechanical seal 3, fluidization fluid shear chamber 4, shear rotor 7 and constitute; Turbulent flow generator is totally-enclosed, and is surrounded by insulation material 11 at its outer wall; The rotating shaft of said high shear rotor 7 is a hollow structure, and temperature sensor 8 inserts in the hollow structure; Motor frequency conversion device 6 is installed on the motor 1, and is placed on the bearing 5.
Said fluidization fluid shear chamber 4 material of main parts adopt stainless steel material, and high-strength organic glass is adopted in capping.
Said high shear rotor 7 is made up of spiral leaf and stirring rod.
The motor 1 of said fluidization fluid shear chamber 4 is by electric motor frequency converter 6 controls, and motor 1 rotating speed and frequency are recorded by motor frequency conversion device 6.
Said rotor 7 rotating speeds reach 2300 ~ 2700 commentaries on classics/per minutes, and the highly viscous fluid of fluidization fluid shear chamber 4 is in complete turbulence state.
The temperature value of said data collecting card 9 records is the mean value of all temperature sensor 8 collection values.
In the said plurality of temperature sensor 8, one of them temperature sensor 8 is through the quill shaft of rotor, and all the other temperature sensor 8 longshore current body fluid shear chambers 4 radial directions are installed, and insertion depth from low to high.
The principle of the utility model: the high shear rotor is directly driven by motor, in high speed rotating, produces high shear force, makes the high viscosity fluid in the fluid shear chamber realize fluidization; Reach complete turbulent flow; During the complete turbulent flow of highly viscous fluid, mainly test the temperature variation of highly viscous fluid and the shearing force of high shear rotor, the highly viscous fluid variation of temperature is gathered through the thermal resistance type temperature sensor probe in the measuring process; Along the fluid shear chamber radial direction three sensor probes are installed in the detection; One of them is through the quill shaft of rotor, and the degree of depth of inserting from low to high, and used numerical value is the mean value of several sensors collection value in calculating; Record highly viscous fluid in the energy dissipation value that fluid shearing is indoor after reaching complete turbulent flow through data acquisition system (DAS), then can draw the effective viscosity value of highly viscous fluid in conjunction with other fluid dynamics parameter.
The utility model compared with prior art has following advantage:
1, pick-up unit is simple to operate; Adopt high-strength organic glass pipeline as capping; Stainless steel is fluid shear chamber and rotor subject material, and the fluid shear chamber outside is surrounded by heat-insulation layer, and the highly viscous fluid and the external world do not have energy exchange; Therefore the situation during not only can the fine observation fluid highly viscous fluid complete turbulent flow of this device, data acquisition system (DAS) can be carried out the whole-process automatic collection to the data in the process of the test;
2, rotor shaft is a hollow structure, and in the middle of temperature sensor inserts, and the insertion depth of sensor is from light to dark, and the temperature variation in the fluid shear chamber is through a plurality of sensor measurements, thus test result science is accurate more;
3, the high shear rotor structure adopts the mode that the spiral leaf combines with stirring rod, and sufficiently high shear stress can be provided, and makes the complete turbulent flow of highly viscous fluid.
4, the data acquisition system (DAS) of research and development is simple to operate voluntarily, record test figure that can be promptly and accurately, and preserve into computing machine with text formatting.
5, this method of testing can be measured various highly viscous fluids with device, the very large fluid of viscosity especially, and according to actual needs, can change rotor structure easily, easy accessibility, easy operating.
Description of drawings
Fig. 1 measures highly viscous fluid method of viscosity and device synoptic diagram for the utility model;
Among Fig. 1: 1-motor, 2-transmission shaft, 3-mechanical seal, 4-fluidization fluid shear chamber, 5-bearing, 6-motor frequency conversion device, 7-high shear rotor, 8-temperature sensor, 9-data collecting card, 10-computing machine, 11-insulation material;
Temperature variation when Fig. 2 is the complete turbulent flow of highly viscous fluid.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation, but the embodiment of the utility model is not limited thereto.
Energy dissipation value during the complete turbulent flow of highly viscous fluid can draw through the rising of its temperature, and formula is following:
In the formula:
-dissipation energy (J);
The specific heat of
-highly viscous fluid (J/ (kg ℃));
The volume (m3) of highly viscous fluid in
-fluid shear chamber.
Therefore the calculating formula of the energy dissipation density
of unit interval unit volume highly viscous fluid is:
In the formula:
-energy dissipation density (J/m3.s)
And according to principle of hydrodynamics, the effective viscosity value during the complete turbulent flow of highly viscous fluid can calculate through the energy dissipation density of fluid:
In the formula: the average shear stress (Pa) that
-pulp suspension receives, computing method are following
（4）
In the formula: L-rotor is immersed in the degree of depth (m) in the highly viscous fluid;
The geometric mean diameter (m) of Dm-rotor share zone;
Nd-shaft power (kw);
As long as therefore know
and
value, the effective viscosity value in the time of can calculating the highly viscous fluid turbulent flow.
As shown in Figure 1, a kind of device of measuring highly viscous fluid viscosity comprises the 1-motor, 2-transmission shaft, 3-mechanical seal; 4-fluidization fluid shear chamber, 5-bearing, 6-motor frequency conversion device, 7-high shear rotor; The 8-temperature sensor, 9-data collecting card, 10-computing machine, 11-insulation material.
For highly viscous fluid, experiment showed, rotor speed under 2300 ~ 2700 commentaries on classics/per minutes, highly viscous fluid can reach turbulence state.Experiment is carried out under normal temperature, normal pressure; Be quality the offset ink of the 100g cylindrical fluid shear chamber of packing at first for example, in order in experiment, better to observe the nowed forming of paper pulp in fluid shear chamber, the circular closure of fluid shear chamber is processed with organic glass; Fluid shear chamber internal diameter 120mm, high 90mm.The high shear rotor is a most important element in this device, and its rotor is processed with stainless steel, external diameter 65mm, and main body is equally distributed three stirring rod and helical blade, wide 10mm, long 75mm, the stirring rod lower end is welded with retainer plate.Set the running parameter of sensor before the experiment, the log-on data acquisition software makes it get into state to be measured.Because the high shear rotor directly is connected with motor; Motor is by Frequency Converter Control; Starter motor increases its rotating speed from low to high gradually, observes highly viscous fluid in the subtrochanteric flow state of high shear; When rotor speed during at 2500/min; Shear stress calculated through shaft power and was 2600Pa this moment, energy dissipation density
be calculated as 330 (kw/m3), the virtual viscosity that therefore calculates offset ink is 20.5 Pas; The interior variation of temperature of fluid shear chamber is by the automatic record of data acquisition system (DAS), and is as shown in Figure 2.△ T/ △ t is drawn by the data computation of Fig. 2, promptly carries out linear regression to gathering curve, and △ T/ △ t is the slope of regression straight line.
Claims (7)
1. device of measuring highly viscous fluid viscosity; It is characterized in that comprising motor (1), turbulent flow generator, motor frequency conversion device (6), plurality of temperature sensor (8), data collecting card (9), computing machine (10); Said turbulent flow generator is made up of high transmission shaft (2), mechanical seal (3), fluidization fluid shear chamber (4), shearing rotor (7); Turbulent flow generator is totally-enclosed, and is surrounded by insulation material (11) at its outer wall; The rotating shaft of said high shear rotor (7) is a hollow structure, and temperature sensor (8) inserts in the hollow structure; Motor (1) is gone up motor frequency conversion device (6) is installed, and places on the bearing (5).
2. the device of measurement highly viscous fluid viscosity according to claim 1 is characterized in that said fluid shearing chamber (4) material of main part adopts stainless steel material, and high-strength organic glass is adopted in capping.
3. the device of measurement highly viscous fluid viscosity according to claim 1 is characterized in that said high shear rotor (7) is made up of spiral leaf and stirring rod.
4. the device of measurement highly viscous fluid viscosity according to claim 1, the motor (1) that it is characterized in that said fluidization fluid shear chamber (4) is by electric motor frequency converter (6) control, and motor (1) rotating speed and frequency are recorded by motor frequency conversion device (6).
5. the device of measurement highly viscous fluid viscosity according to claim 1 is characterized in that controlling rotor (7) rotating speed and reaches 2300 ~ 2700 commentaries on classics/per minutes, and the highly viscous fluid of fluidization fluid shear chamber (4) is in complete turbulence state.
6. the device of measurement highly viscous fluid viscosity according to claim 1 is characterized in that the temperature value of data collecting card (9) record is the mean value of all temperature sensors (8) collection value.
7. the device of measurement highly viscous fluid viscosity according to claim 1; It is characterized in that in the described plurality of temperature sensor (8); One of them temperature sensor (8) is through the quill shaft of rotor; All the other temperature sensors (8) longshore current body fluid shear chambers (4) radial direction is installed, and insertion depth from low to high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202911631U CN202216889U (en) | 2011-08-11 | 2011-08-11 | Device for measuring viscosity of highly viscous fluid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202911631U CN202216889U (en) | 2011-08-11 | 2011-08-11 | Device for measuring viscosity of highly viscous fluid |
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| Publication Number | Publication Date |
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| CN202216889U true CN202216889U (en) | 2012-05-09 |
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| CN2011202911631U Expired - Fee Related CN202216889U (en) | 2011-08-11 | 2011-08-11 | Device for measuring viscosity of highly viscous fluid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305754A (en) * | 2011-08-11 | 2012-01-04 | 华南理工大学 | Method and device for measuring viscosity of high-viscosity fluid |
| CN110567872A (en) * | 2019-10-10 | 2019-12-13 | 湖北淡雅香生物科技股份有限公司 | Tension detection device for anti-adhesion degree of tipping paper printing ink |
| CN111351736A (en) * | 2020-03-20 | 2020-06-30 | 河北瑞志交通技术咨询有限公司 | Hot-melt coating fluidity performance test device and method |
-
2011
- 2011-08-11 CN CN2011202911631U patent/CN202216889U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305754A (en) * | 2011-08-11 | 2012-01-04 | 华南理工大学 | Method and device for measuring viscosity of high-viscosity fluid |
| CN110567872A (en) * | 2019-10-10 | 2019-12-13 | 湖北淡雅香生物科技股份有限公司 | Tension detection device for anti-adhesion degree of tipping paper printing ink |
| CN111351736A (en) * | 2020-03-20 | 2020-06-30 | 河北瑞志交通技术咨询有限公司 | Hot-melt coating fluidity performance test device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangzhou Guanyu Aluminium Foil Packing Material Co., Ltd. Assignor: South China University of Technology Contract record no.: 2012440000412 Denomination of utility model: Device for measuring viscosity of highly viscous fluid Granted publication date: 20120509 License type: Exclusive License Record date: 20120727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20150811 |
|
| EXPY | Termination of patent right or utility model |