CN103528926B - A kind of fluid viscosity measurement device and method - Google Patents
A kind of fluid viscosity measurement device and method Download PDFInfo
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- CN103528926B CN103528926B CN201310513056.2A CN201310513056A CN103528926B CN 103528926 B CN103528926 B CN 103528926B CN 201310513056 A CN201310513056 A CN 201310513056A CN 103528926 B CN103528926 B CN 103528926B
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Abstract
The present invention relates to a kind of fluid viscosity measurement device and method, described device comprise the stirring machine that is fixed on cradle top and be fixed on heating plate for taking up the cylindrical vessel treating fluid measured, the eccentric position of cylindrical vessel is located at by described rotor, make the gap area producing setpoint distance between the two, the sidewall of cylindrical vessel offers through hole and in through hole, fluid pressure meter is installed, wherein, the minor increment h between rotor and cylindrical vessel
0be not more than 2mm; Cross section orthogonal distance x between described through hole and the minimum distance between rotor and cylindrical vessel is 1mm.This device measures the viscosity of fluid by the hydrodynamic change between mutual moving surface, eliminates the parts such as torque sensor, reduces production cost, simplify the structure of instrument, shorten Measuring Time, can widespread use in the middle of practice.
Description
Technical field
The present invention relates to a kind of fluid viscosity measurement device and method, being specifically related to a kind of measuring equipment for measuring fluid viscosity under different temperatures and method, belonging to instrument field.
Background technology
Present viscosimeter divides by working method and mainly contains capillary type viscosimeter, Rotary Viscosimeter, oscillatory type viscosimeter, but these viscosimeters are in manufacture with use and all there are some shortcomings, need to be improved.Capillary type viscosimeter time used when measuring the viscosity of the larger liquid of viscosity is longer; The torque sensor price of Rotary Viscosimeter is higher, adds manufacturing cost; And oscillatory type viscosimeter complicated structure.
Summary of the invention
For solving the problem, the invention provides a kind of fluid viscosity measurement device, this device measures the viscosity of fluid by the hydrodynamic change between mutual moving surface.
A kind of fluid viscosity measurement device, described device comprise the stirring machine that is fixed on cradle top and be fixed on heating plate for taking up the cylindrical vessel treating fluid measured, described cylindrical vessel is positioned at the below of stirring machine, cylindrical rotor runs through and is fixed on the dwang of stirring machine, dwang carries out radial direction by the bearing be located at bottom cylindrical vessel to be fixed, the eccentric position of cylindrical vessel is located at by described rotor, make the gap area producing setpoint distance between the two, the sidewall of cylindrical vessel offers through hole and in through hole, fluid pressure meter is installed
Wherein, the minor increment h between rotor and cylindrical vessel
0be not more than 2mm; Cross section orthogonal distance x between described through hole and the minimum distance between rotor and cylindrical vessel is 1mm.
Fluid viscosity measurement device of the present invention, the stirring machine being positioned at top is fixed on support, during stirring machine work by the dwang that runs through rotor by power transmission to rotor; Be cylindrical vessel below stirring machine, cylindrical vessel is fixed on constant temperature electric boiling plate, is also fixed on support simultaneously; Be provided with bottom cylindrical vessel bearing to the dwang running through rotor carry out radial direction fix, prevent from shaking in rotor turns process, rotor arrangements, at the eccentric position of cylindrical vessel, makes to produce very little region, a slice gap between the two.When measuring, to treat that fluid measured injects cylindrical vessel, open stirring machine, dwang is rotated by rotor driven and drives liquid flow, form hydrldynamic pressure lubrication at gap area, the sidewall of the cylindrical vessel in this region offers through hole and fluid pressure meter is installed, for measuring the pressure of fluid, according to the Reynolds equation of the transverse bearing of infinite one dimensional, the relation between viscosity and pressure can be set up.According to this relation the scale of manometer is converted to k value scale k value.When using this measuring equipment, will select suitable rotor specification and rotating speed according to actual conditions, namely the viscosity of testing liquid is less, and selected root diameter is less, and rotating speed is higher.
First fluid viscosity measurement device of the present invention preferably determines the diameter of cylindrical vessel and the position of bearing, changes the minor increment h between rotor and cylindrical vessel by the rotor changing different-diameter
0, and change the distance h between through hole and rotor simultaneously.
Fluid viscosity measurement device of the present invention preferably includes viscosity display device.K value shown by described viscosity display device is by the force value that records and the individual parameter of setting and the Reynolds equation gained of the transverse bearing according to infinite one dimensional.
The preferred described device of fluid viscosity measurement device of the present invention also comprises temperature sensor, and described temperature sensor is placed in be treated fluid measured and is connected with heating plate.
Minor increment h between the preferred described rotor of fluid viscosity measurement device of the present invention and cylindrical vessel
0determine as follows:
If treat, the kinematic viscosity of fluid measured is less than 80cSt, then h
0be less than or equal to 1mm, but not containing 0;
If treat, the kinematic viscosity of fluid measured equals 80cSt greatly, then h
0be 1 ~ 2mm, not containing 1mm.
Another object of the present invention is to provide the method utilizing above-mentioned measurement fluid viscosity.
A kind of fluid viscosity measuring method, by treating that fluid measured is injected in the cylindrical vessel of said apparatus, determines the minor increment h between rotor and cylindrical vessel
0with the rotating speed of rotor,
Described setpoint distance is determined as follows:
If treat, the kinematic viscosity of fluid measured is less than 80cSt, then h
0be less than or equal to 1mm, but not containing 0;
If treat, the kinematic viscosity of fluid measured is more than or equal to 80cSt, then h
0be 1 ~ 2mm, not containing 1mm.
Described rotating speed is determined as follows:
If treat, the kinematic viscosity of fluid measured is less than 80cSt, then the rotating speed of rotor is greater than 280r/min;
If treat, the kinematic viscosity of fluid measured is more than or equal to 80cSt, then the rotating speed of rotor is less than or equal to 280r/min,
According to the Reynolds equation of the transverse bearing of infinite one dimensional
P---hydrodynamic pressure, tensimeter records pressure
X---along on rotor circumference direction displacement (the cross section orthogonal distance namely between through hole and the minimum distance between rotor and cylindrical vessel, as shown in Figure 2)
η---fluid viscosity
U---rotor speed
H
0---the distance of oil pressure maximum rotor and cylindrical vessel (minor increment namely between rotor and cylindrical vessel, as shown in Figure 2)
H---the distance between through hole and rotor
Set up the relation between viscosity and pressure, according to this relation, the scale of manometer is replaced with k value scale and directly can demonstrate k value.
In said method, when the approximate range of unknown k value, gap is regulated to be 1 ~ 2mm, rotor speed is less than or equal to 280r/min, if fluid viscosity measurement device normally cannot show viscosity, then regulate gap for being less than or equal to 1mm, rotor speed is greater than 280r/min.
The invention has the beneficial effects as follows: the invention provides a kind of fluid viscosity measurement device and utilize the method for this measurement device fluid viscosity, this device measures the viscosity of fluid by the hydrodynamic change between mutual moving surface, eliminate the parts such as torque sensor, reduce production cost, simplify the structure of instrument, shorten Measuring Time, can widespread use in the middle of practice.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of fluid viscosity measurement device.
Fig. 2 is cylinder section schematic diagram;
Reference numeral is as follows: stirring machine 1, fluid pressure meter 2, cylindrical vessel 3, bearing 4, heating plate 5, rotor 6, temperature sensor 7, support 8, dwang 9, through hole 10.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Fluid viscosity measurement device described in following embodiment:
A kind of fluid viscosity measurement device, described device comprise the stirring machine 1 that is fixed on support 8 top and be fixed on heating plate 5 for taking up the cylindrical vessel 3 treating fluid measured, described cylindrical vessel 3 is positioned at the below of stirring machine 1, cylindrical rotor 6 runs through and is fixed on the dwang 9 of stirring machine 1, dwang 9 carries out radial direction by the bearing 4 be located at bottom cylindrical vessel 3 to be fixed, the eccentric position of cylindrical vessel 3 is located at by described rotor 6, make the gap area producing setpoint distance between the two, the sidewall of cylindrical vessel 3 offers through hole 10 and at through hole 10 place, fluid pressure meter 2 is installed.Wherein, the minor increment h between rotor 6 and cylindrical vessel 3
0for 0.5mm; Cross section orthogonal distance x between described through hole 10 and the minimum distance between rotor 6 and cylindrical vessel 3 is 1mm, and the distance h between through hole 10 and rotor 6 is 0.6mm.
Described device also comprises temperature sensor 7, and described temperature sensor 7 is placed in be treated fluid measured and is connected with heating plate 5.
Embodiment 1
Cylindrical vessel diameter is 10cm, and root diameter is 7cm, x is 1mm, and rotating speed is 300r/min, and known Viscosity Index is the oil of 40, and recording pressure is 330pa, and viscosity is 40.
Embodiment 2
Cylindrical vessel diameter is 10cm, and root diameter is 7cm, x is 1mm, and rotating speed is 300r/min, known Viscosity Index be 50 oil to record pressure be 410pa, viscosity is 50.
Embodiment 3
Cylindrical vessel diameter is 10cm, and root diameter is 7cm, x is 1mm, and rotating speed is 300r/min, known Viscosity Index be 65 oil to record pressure be 540pa, viscosity is 65.
Claims (4)
1. a fluid viscosity measurement device, it is characterized in that: described device comprise the stirring machine (1) that is fixed on support (8) top and be fixed on heating plate (5) for taking up the cylindrical vessel (3) treating fluid measured, described cylindrical vessel (3) is positioned at the below of stirring machine (1), cylindrical rotor (6) run through be fixed on stirring machine (1) dwang (9) on, dwang (9) carries out radial direction by the bearing (4) being located at cylindrical vessel (3) bottom to be fixed, the eccentric position of cylindrical vessel (3) is located at by described rotor (6), make the gap area producing setpoint distance between the two, the sidewall of cylindrical vessel (3) is offered through hole (10) and at through hole (10) place, fluid pressure meter (2) is installed,
Wherein, the minor increment h between rotor (6) and cylindrical vessel (3)
0be not more than 2mm; Rotor (6) on cylindrical vessel (3) and the minimum distance between cylindrical vessel (3) and the cross section orthogonal distance x between through hole (10) are 1mm.
2. device according to claim 1, is characterized in that: described device also comprises temperature sensor (7), and described temperature sensor (7) is placed in be treated fluid measured and is connected with heating plate (5).
3. device according to claim 1, is characterized in that: the minor increment h between described rotor (6) and cylindrical vessel (3)
0determine as follows:
If treat, the kinematic viscosity of fluid measured is less than 80cSt, then h
0be less than or equal to 1mm, but not containing 0;
If treat, the kinematic viscosity of fluid measured is more than or equal to 80cSt, then h
0be 1 ~ 2mm, not containing 1mm.
4. a fluid viscosity measuring method, is characterized in that: by treating that fluid measured is injected in the cylindrical vessel (3) of device described in claim 1, determine the minor increment h between rotor (6) and cylindrical vessel (3)
0with the rotating speed of rotor (6),
Described minor increment h
0determine as follows:
If treat, the kinematic viscosity of fluid measured is less than 80cSt, then h
0be less than or equal to 1mm, but not containing 0;
If treat, the kinematic viscosity of fluid measured is more than or equal to 80cSt, then h
0be 1 ~ 2mm, not containing 1mm;
Described rotating speed is determined as follows:
If treat, the kinematic viscosity of fluid measured is less than 80cSt, then the rotating speed of rotor (6) is greater than 280r/min;
If treat, the kinematic viscosity of fluid measured is more than or equal to 80cSt, then the rotating speed of rotor (6) is less than or equal to 280r/min,
Set up the relation between viscosity and pressure according to the Reynolds equation of the transverse bearing of infinite one dimensional, according to this relation, the scale of manometer is replaced with k value scale and namely obtain k value, the Reynolds equation of the transverse bearing of infinite one dimensional is as follows:
P---hydrodynamic pressure, tensimeter records pressure
Rotor (6) on x---cylindrical vessel (3) and the minimum distance between cylindrical vessel (3) and the cross section orthogonal distance between through hole (10)
η---fluid viscosity
U---rotor (6) rotating speed
H
0---the minor increment between rotor (6) and cylindrical vessel (3)
Distance between h---through hole (10) and rotor (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310513056.2A CN103528926B (en) | 2013-10-24 | 2013-10-24 | A kind of fluid viscosity measurement device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310513056.2A CN103528926B (en) | 2013-10-24 | 2013-10-24 | A kind of fluid viscosity measurement device and method |
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| Publication Number | Publication Date |
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| CN103528926A CN103528926A (en) | 2014-01-22 |
| CN103528926B true CN103528926B (en) | 2016-03-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628556B (en) * | 2016-01-21 | 2018-02-27 | 南京邮电大学 | A kind of fluid viscosity measuring device and its measuring method |
| CN110218829B (en) * | 2019-06-28 | 2021-05-25 | 华北理工大学 | Device and method for detecting fluidity of molten iron in hearth |
| CN110967274B (en) * | 2019-12-12 | 2022-11-29 | 大连海事大学 | Comprehensive evaluation instrument for new mixing performance of cement-based material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0399634A2 (en) * | 1989-05-22 | 1990-11-28 | PLINT & PARTNERS LIMITED | Viscometer |
| CN202939111U (en) * | 2012-12-10 | 2013-05-15 | 山西省电力公司大同供电分公司 | Device for measuring liquid viscosity coefficient |
| CN103234869A (en) * | 2013-04-26 | 2013-08-07 | 中国石油天然气股份有限公司 | Oil reservoir fluid on-line high-pressure rotary viscometer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT504116B1 (en) * | 2007-06-06 | 2008-03-15 | Anton Paar Gmbh | Method for determining viscosity of fluids, particularly liquids, involves bringing fluid and moving through tapering gap bounded by two opposite wall surfaces and distance or change of distance between opposite walls is measured |
-
2013
- 2013-10-24 CN CN201310513056.2A patent/CN103528926B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0399634A2 (en) * | 1989-05-22 | 1990-11-28 | PLINT & PARTNERS LIMITED | Viscometer |
| CN202939111U (en) * | 2012-12-10 | 2013-05-15 | 山西省电力公司大同供电分公司 | Device for measuring liquid viscosity coefficient |
| CN103234869A (en) * | 2013-04-26 | 2013-08-07 | 中国石油天然气股份有限公司 | Oil reservoir fluid on-line high-pressure rotary viscometer |
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| CN103528926A (en) | 2014-01-22 |
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