CN106950155A - A kind of cross Newtonian liquid viscosity strain gauge - Google Patents
A kind of cross Newtonian liquid viscosity strain gauge Download PDFInfo
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- CN106950155A CN106950155A CN201710368385.0A CN201710368385A CN106950155A CN 106950155 A CN106950155 A CN 106950155A CN 201710368385 A CN201710368385 A CN 201710368385A CN 106950155 A CN106950155 A CN 106950155A
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- 239000007788 liquid Substances 0.000 title claims abstract description 79
- 238000005259 measurement Methods 0.000 claims abstract description 48
- 239000011888 foil Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 229910001318 Zeron 100 Inorganic materials 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 8
- 238000010008 shearing Methods 0.000 description 4
- 238000001802 infusion Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical compound C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention relates to a kind of cross Newtonian liquid viscosity strain gauge.It is characterized in that described strain gauge is decussate texture, the center of cross is the hollow tube that two is provided with inner bolt hole, the centre of hollow tube is provided with two symmetrically arranged supporting spokes pieces, it is separated by the centre of 90 ° of hollow tube provided with two symmetrically arranged measurement arms with supporting spokes piece, it is day character form structure that the length of measurement arm, which is less than its section of supporting spokes piece, post two panels resistance strain gage in horizontal its two sides for strain plate base in centre one of day font, the four sheet resistance foil gauges posted in every measurement arm are linked to be full bridge measuring circuit, whole cross viscosity strain gauge passes through front-rear center pipe, front and rear positioning spoke ring is limited to the center in the drain straight tube of on-line measurement signal pickup assembly.The present invention's has simple in construction, the characteristics of measurement accuracy is high.
Description
Technical field
The present invention relates to sensor field, a kind of cross Newtonian liquid viscosity strain gauge is related specifically to.
Background technology
Its working sensor form has two kinds in Newtonian liquid viscosity on-line measurement signal acquisition traditional at present：One kind is
Viscosity sensor is rotary, and its operation principle is to immerse viscosity sensor in testing liquid, sensor is under the drive of motor
Rotated in testing liquid, because liquid has viscosity, sensor rotates in testing liquid to be turned by resistance in certain
Under speed, viscosity is bigger, and resistance is bigger, thus the output voltage of sensor is bigger.Another is viscosity sensor swing type,
Its operation principle is to immerse viscosity sensor in testing liquid, sensor is under the drive of motor and transmission mechanism to be measured
Swung back and forth in liquid, similarly because liquid has viscosity, sensor swings back and forth in testing liquid will be by resistance, one
Under fixed hunting frequency, viscosity is bigger, and resistance is bigger, thus the output voltage of sensor is bigger.The first is sensing above
Device is rotated in testing liquid, and because liquid is between layers there is also resistance, liquid in rotation can be driven during sensor rotation, and
Each liquid layer tangential velocity more remote from pivot is smaller during liquid in rotation, also just says the relative velocity of two adjacent liquid layers and has speed
Difference, because liquid has quality and viscosity, thus there is inertia and resistance, this allows for this speed difference and just opened in sensor
The speed difference when speed difference of moment is with normal rotation after dynamic rotation is different, and the speed difference of moment is more than normal after startup rotation
Speed difference during rotation, and can truly reflect Newtonian liquid viscosity resistance be start rotation after moment speed difference, that is,
Saying the signal of the revolving Newtonian liquid viscosity on-line measurement collection of viscosity sensor has error.Similarly viscosity sensor is put
The signal of dynamic formula Newtonian liquid viscosity on-line measurement collection is also to have error.In actual application, many occasions are to newton
The viscosity required precision of liquid is very high, and this allows for traditional Newtonian liquid viscosity on-line measurement Signal Collection Technology and has one
Surely limitation.How to overcome the deficiencies in the prior art, be a kind of on-line measurement signal of Newtonian liquid viscosity measurement high precision
Harvester（Separately apply）A kind of corresponding Newtonian liquid viscosity strain gauge is provided, just into main research of the invention
Problem.
The content of the invention
Present invention aim to overcome the deficiencies in the prior art, be a kind of Newtonian liquid viscosity measurement high precision
Line measurement signal harvester（Separately apply）A kind of cross Newtonian liquid viscosity strain gauge is provided.In order to preferably manage
The solution present invention, before specifically statement technical solution of the present invention, first does plain statement to related theoretical foundation.
Liquid is divided into Newtonian liquid and non-newtonian liquid, also there is referred to as Newton and non-Newton fluid.During we live
The major part run into is Newtonian liquid, such as：Rosin, many chemical industry preparations, conventional beverage, water etc. after grease, fusing.As long as
Newtonian liquid is satisfied by following condition：
τ=μv
In formula：Shear stress between τ-adjacent liquid layer；The viscosity of μ-liquid；V-perpendicular to flow rate of liquid direction liquid layer
Velocity gradient.,
When giving constant a pump liquid speed V and steady temperature T, perpendicular to the speed of flow rate of liquid direction any point liquid layer
It is constant to spend gradient v.At this moment shear stress τ and the viscosity, mu of liquid between adjacent liquid layer is linear relationship.Treated if being immersed in
The area of the strain gauge side parallel with the flow rate of liquid direction is the area for measuring arm side in viscosimetric Newtonian liquid
For S, then when flowing through strain gauge, the shearing force F suffered by two sides of strain gauge is：
F=2Sτ=2Sμv。
According to above-mentioned theoretical foundation, in order to realize the purpose of the present invention, the present invention is to come real by the following technical programs
Existing.A kind of cross Newtonian liquid viscosity strain gauge, it is characterised in that described strain gauge is decussate texture,
The center of cross is the hollow tube that two is provided with inner bolt hole, and the centre of hollow tube is used provided with two symmetrically arranged supporting spokes pieces
On-line measurement signal pickup assembly is positioned in cross strain gauge is limited（Separately apply）Drain straight tube center, with
Supporting spokes piece is separated by the centre of 90 ° of hollow tube provided with two symmetrically arranged measurement arms, and the length of measurement arm is less than support
Its section of spoke piece is day character form structure, day the centre one of font horizontal post two panels resistance-strain for strain plate base its two sides
The four sheet resistance foil gauges posted in piece, every measurement arm are linked to be full bridge measuring circuit, and two full bridge measuring circuits are in parallel
After be linked into viscosity display control recorder, day font hollow sectors be filled with high temperature insulation glue, the cross viscosity
The inner bolt hole at strain gauge center hollow pipe two respectively with on-line measurement signal pickup assembly（Separately apply）It is front and rear in
Heart pipe is connected, and the other end of front-rear center pipe revolves with the center of the front and rear positioning spoke ring of on-line measurement signal pickup assembly respectively
Connect, whole cross viscosity strain gauge is limited to on-line measurement signal acquisition by front-rear center pipe, front and rear positioning spoke ring
Center in the drain straight tube of device.
Further, because the requirement measurement arm Cross section Design of patch resistance-strain blade technolgy is day character form structure, in phase
Close after the completion of technique, two described symmetrically arranged sections are sealed for the two ends technique plug of the measurement arm of day character form structure
It is stifled, flowed into prevent testing liquid for shutting day font port and damage resistance strain gage and influence normal operation of sensor.
Further, in order that sensor adapts to the Newtonian liquid of different pH values and with good temperature stability,
Described cross Newtonian liquid viscosity strain gauge material uses the metallic elastic body material of the small good corrosion resistance of creep coefficient
Material is such as：2Cr13 or S32760 or Zeron100.
The operation principle of the present invention is so：When the temperature for the liquid for flowing through cross Newtonian liquid viscosity strain gauge
When degree and flow velocity is a certain steady state values, shearing force when liquid flows through measurement arm both sides is：F=2S μ v, viscosity number μ and shearing force
F is linear, and the physical quantity of liquid viscosity is converted into electric signal and is input in viscosity display control recorder by viscosity sensing.
As can be seen that the ten of the Newtonian liquid viscosity on-line measurement signal pickup assembly of the present invention from above-mentioned technical proposal
Font strain gauge is limited to the center in drain straight tube, simple in construction.If electronic infusion pump is with a fixed side
Cross strain gauge is flowed through to by Newtonian liquid to be measured, then flows through cross strain gauge relative to Newtonian liquid to be measured
Flow velocity be it is real, in this case Newtonian liquid to be measured be to cross strain gauge viscosity resistance it is real, thus
Measurement accuracy is high.Different from traditional viscosity sensor it is rotary and be viscosity sensor swing type both, due to liquid
Both sensors of inertia are untrue relative to the flow velocity of Newtonian liquid to be measured, that is, Newtonian liquid to be measured is to both biographies
Sensor viscosity resistance is untrue error.In order to better illustrate the present invention, with reference to embodiment and embodiment
Accompanying drawing is described further.
Brief description of the drawings
Fig. 1 is the stereogram of the specific embodiment of the invention.
Fig. 2 is the location drawing of the present invention in on-line measurement signal pickup assembly.
Fig. 3 is Fig. 2 top views.
Fig. 4 is Fig. 2 B-B profiles.
Fig. 5 is Fig. 2 C-C profiles.
Fig. 6 is Fig. 2 D-D profiles.
Fig. 7 is Fig. 2 C partial enlarged drawings.
Fig. 8 is Fig. 3 A partial enlarged drawings.
Fig. 9 is Fig. 8 A-A sectional views.
Figure 10 be the present invention measurement arm in resistance strain gage connection help be linked into after bridge circuit viscosity display control note
Record the schematic diagram in instrument.
In figure：1- returns liquid bend pipe；2- viscosity on-line measurement signal gathering units；3- feed liquor bend pipes go out liquid section；；4- electric gears
Take turns infusion pump；5-- feed liquor bend pipes；6- stepper motors；7- sensors measure arm；8- sensor support spoke pieces；9- drain straight tubes；
10- rear center manages；11- sensor lead-out wires；Spoke ring is positioned after 12-；Spoke ring spoke piece is positioned after 13-；Central tube before 14-；15-
Prelocalization spoke ring；16-prelocalization spoke ring spoke piece；17- sensor hollow tubes；Deflection cone before 18-；19- high temperature insulation glue；20- should
Become plate base；21- technique plugs；Spoke ring radial canal is positioned after 22-；R1, R4, R ' 1, R ' 4- sensors measurement arm lee side resistance should
Become piece；R2, R3, R ' 2, R ' 3- sensors measurement arm fluoran stream surface resistance strain gage.
Embodiment
It can be seen that by above embodiment and embodiment accompanying drawing：Strain gauge of the present invention is ten
Character form structure, the center of cross is provided with the hollow tube 17 of inner bolt hole for two, and the centre of hollow tube 17 is symmetrically set provided with two
The supporting spokes piece 8 put is used to cross strain gauge limitation being positioned at on-line measurement signal pickup assembly（Separately apply）'s
The center of drain straight tube 9, the centre for being separated by 90 ° of hollow tube 17 with supporting spokes piece 8 is provided with two symmetrically arranged measurement arms 7,
It is day character form structure that the length of measurement arm 7, which is less than its section of supporting spokes piece 8,（See Fig. 9）, day font centre one it is horizontal be foil gauge
Substrate 20, its lee side posts resistance strain gage R1, R4, R ' 1, R ' 4- respectively, its fluoran stream surface post respectively resistance strain gage R2,
The four sheet resistance foil gauges posted in R3, R ' 2, R ' 3, every measurement arm are linked to be full bridge measuring circuit, two full bridge measurements
It is linked into after circuit in parallel in viscosity display control recorder（See Figure 10）, day font hollow sectors be filled with high temperature insulation glue
19, the inner bolt hole at described two of cross viscosity strain gauge center hollow pipe 17 respectively with on-line measurement signal pickup assembly
（Separately apply）Preceding central tube 14, rear center's pipe 10 connect, the other end of preceding central tube 14 and rear center's pipe 10 respectively with
The center of the prelocalization spoke ring 15 of line measurement signal harvester and rear positioning spoke ring 12 is spun, and whole cross viscosity stress is passed
Sensor is limited to on-line measurement signal and adopted by preceding central tube 14 and rear center's pipe 10, prelocalization spoke ring 15 and rear positioning spoke ring 12
Center in the drain straight tube 9 of acquisition means.Easily required to paste resistance-strain blade technolgy, measurement arm 7 Cross section Design is day
Character form structure, two symmetrically arranged sections are the two ends recruitment for measuring arm 7 of day character form structure after the completion of related process
Skill plug 21 blocks dead day font port, is flowed into prevent testing liquid and damages resistance strain gage and influence normal operation of sensor.For
Enable the invention to adapt to the Newtonian liquid of different pH values and with good temperature stability, the present embodiment sensor material adopts
With the metal elastic elastomer material S32760 of the small good corrosion resistance of creep coefficient.
The operation principle of the present embodiment is so：When the liquid for flowing through cross Newtonian liquid viscosity strain gauge
When temperature and flow velocity is a certain steady state values, shearing force when liquid flows through measurement 7 both sides of arm is：F=2S μ v, viscosity number μ is with cutting
Shear force F is linear, and the physical quantity of liquid viscosity is converted into electric signal and is input to viscosity display control record by viscosity sensing
In instrument.
The Newtonian liquid viscosity on-line measurement signal pickup assembly of the present invention is can be seen that from upper embodiment
Cross strain gauge is limited to the center in drain straight tube 9, simple in construction.If electronic infusion pump is with fixed one
Newtonian liquid to be measured is flowed through cross strain gauge by direction, then flows through cross strain gauge relative to newton liquid to be measured
The flow velocity of body is real, and Newtonian liquid to be measured is also true that to cross strain gauge viscosity resistance in this case,
Thus measurement accuracy is high.He be different from traditional viscosity sensor it is rotary and be viscosity sensor swing type both, due to
Both sensors of the inertia of liquid are untrue relative to the flow velocity of Newtonian liquid to be measured, that is, Newtonian liquid to be measured is to this
Two kinds of sensor viscosity resistances are untrue error.
One kind of embodiment enumerated above, only numerous embodiments, it is impossible to enumerate one by one.All guarantors under this invention
The extension that shield scope is made is improved, modification modification belongs to protection scope of the present invention.
Claims (3)
1. a kind of cross Newtonian liquid viscosity strain gauge, it is characterised in that described strain gauge is cross knot
Structure, the center of cross is provided with the hollow tube of inner bolt hole for two, and the centre of hollow tube is provided with two symmetrically arranged supporting spokes
Piece, the centre for being separated by 90 ° of hollow tube with supporting spokes piece is provided with two symmetrically arranged measurement arms, and the length of measurement arm is less than
Its section of supporting spokes piece is day character form structure, day font centre one it is horizontal post two sheet resistances for strain plate base its two sides should
Become the four sheet resistance foil gauges posted in piece, every measurement arm and be linked to be full bridge measuring circuit, two full bridge measuring circuits are simultaneously
Be linked into after connection in viscosity display control recorder, day font hollow sectors be filled with high temperature insulation glue, the cross glue
The inner bolt hole at degree strain gauge center hollow pipe two is connected with the front-rear center pipe of on-line measurement signal pickup assembly respectively,
Center of the other end of front-rear center pipe respectively with the front and rear positioning spoke ring of on-line measurement signal pickup assembly spins, whole cross
The drain that shape viscosity strain gauge is limited to on-line measurement signal pickup assembly by front-rear center pipe, front and rear positioning spoke ring is straight
Center in pipe.
2. a kind of cross Newtonian liquid viscosity strain gauge according to claim 1, it is characterised in that described two
The symmetrically arranged section of root is the two ends technique plug for the measuring arm closure of day character form structure, for shutting a day font port.
3. a kind of cross Newtonian liquid viscosity strain gauge according to claim 1, it is characterised in that described ten
Font Newtonian liquid viscosity strain gauge material using the small good corrosion resistance of creep coefficient 2Cr13 or S32760 or
Zeron100 metal elastic elastomer materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710368385.0A CN106950155B (en) | 2017-05-23 | 2017-05-23 | Cross Newtonian liquid viscosity stress sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710368385.0A CN106950155B (en) | 2017-05-23 | 2017-05-23 | Cross Newtonian liquid viscosity stress sensor |
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| CN106950155A true CN106950155A (en) | 2017-07-14 |
| CN106950155B CN106950155B (en) | 2024-05-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613899A (en) * | 2018-06-15 | 2018-10-02 | 昆明理工大学 | A kind of adaptive oil viscosity measuring device of strain-type and method |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613899A (en) * | 2018-06-15 | 2018-10-02 | 昆明理工大学 | A kind of adaptive oil viscosity measuring device of strain-type and method |
| CN108613899B (en) * | 2018-06-15 | 2023-12-22 | 昆明理工大学 | Strain type self-adaptive oil viscosity measurement device and method |
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| Publication number | Publication date |
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| CN106950155B (en) | 2024-05-28 |
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