CN207197986U - It is a kind of based on fall magnetic method detection liquid viscosity detection means - Google Patents
It is a kind of based on fall magnetic method detection liquid viscosity detection means Download PDFInfo
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- CN207197986U CN207197986U CN201721173470.3U CN201721173470U CN207197986U CN 207197986 U CN207197986 U CN 207197986U CN 201721173470 U CN201721173470 U CN 201721173470U CN 207197986 U CN207197986 U CN 207197986U
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Abstract
The utility model discloses a kind of based on the detection means for falling magnetic method detection liquid viscosity, belong to viscosity measurements field.The detection means includes outer tube, inner chamber is offered in outer tube, closed by lower end cap the bottom of inner chamber, testing liquid is held in inner chamber, magnetic free-falling in testing liquid from inner cavity top, outer tube forms closed-loop path containing metal or to be provided with the tube-shaped tube of metal parts between the metal or metal parts of outer tube；Induced-current or the movement velocity by detecting magnetic caused by the closed-loop path that the utility model is formed by detecting outer tube, you can calculate the viscosity of testing liquid.Detection means of the present utility model overcomes the shortcomings of that liquid viscosity measuring operation inconvenience, accuracy in detection be not high in the prior art, it is applicable to measure low viscosity sample and improves measuring accuracy, and the not influence of liquid body printing opacity degree, had a wide range of applications in viscosity measurements.
Description
Technical field
Viscosity measurements technical field is the utility model is related to, is based on magnetic method detection liquid more specifically to one kind
The detection means of viscosity.
Background technology
It is the simplest easy with falling ball method (also known as the method for Stokes) at present in all multi-method and instrument of measure liquid viscosity
Row and application is universal, this method is to fill with testing liquid in a glass cylinder being disposed vertically, when a prill from
When the top of graduated cylinder falls and priority is by certain two specific graduation mark position, two specific graduation mark positions are passed through according to bead
The falling speed that bead is calculated apart from can between time interval and two graduation marks when putting, further according to the small ball's diameter, amount
The parameters such as the density of cylinder diameter, the density of bead and liquid calculate the viscosity of liquid with corresponding physical equation.
It is using the above-mentioned falling ball method measure whether accurate key of viscosity：Bead can be measured exactly passes through two spies
Determine time interval during graduation mark position, and the falling speed of bead is further calculated according to two scale wire spacings, due to low
In viscous liquid, liquid sticky resistance very little, bead falling speed quickly, can not accurately calculate falling speed, therefore this method
It is difficult to accurately apply for low viscosity sample copy.And when using falling ball method tested viscosity at present, generally using manual or automatic control meter
When determine the speed that bead at the uniform velocity falls, this requires that the falling speed of bead is slow as far as possible, also require the diameter of bead
As small as possible, the viscosity of testing liquid is as big as possible, and this just brings many restrictive conditions to liquid using falling ball viscosity.
To improve the measurement range and accuracy of detection that falling ball method detects viscosity, many research directions and side have been attempted in industry
Method, but automatic control timing mainly or based on the automatic release to falling sphere and by sensor to falling sphere fall time is carried out, such as
Number of patent application：200720040115, the applying date：It is on June 28th, 2007, entitled：A kind of induction type falling ball method liquid viscosity
Analyzer, this application case sequentially pass through two induction coils for being arranged on graduation mark position come automatic control timing using by prill
The detection to viscosity is realized, automatic control timing simply is realized to the falling sphere time；Such as number of patent application：94227041X, the applying date：
It is on January 14th, 1994, entitled：Photoelectric falling sphere viscometer, this application case are small using electromagnetic releasing metal ball and optoelectronic induction
Ball realizes the detection to viscosity by upper and lower graduation mark automatic control timing, and this application case is simply realized to falling sphere release and falling sphere time
Automatic control timing；Such as number of patent application：2014106708856, it is November 21 2014 applying date, entitled：One kind is based on
The liquid viscosity measuring method of ball, matched somebody with somebody using mechanical pulley group by lead and outside to slow down the speed of bead falling sphere, realization pair
The detection of viscosity, this application case are applied with a upward pulling force to the bead of vertical drop using attachment device, slow down bead
Falling speed, but the big complex operation of attachment device volume changes the simple and easy original intention of falling ball method, is not suitable for popularization,
And measurement range and precision contribution very little to viscosity.
Secondly, through retrieval, number of patent application：2014106163394, the applying date：It is on November 4th, 2014, entitled：Liquid
Viscosity-density on-line checking is popped one's head in, and this application case is realized to permeability magnetic material system by the way of magnet coil is powered and produces magnetic force
The driving of the motion float of work, to realize the measurement of liquid viscosity and density；This is a kind of method that magnetic force is produced by electric energy, right
Move the balance between float weight and coil power supply power for producing magnetic force and require more harsh, it is necessary to complicated control
Circuit processed and supporting sensor realize, therefore complicated, and operation difficulty is big；Simultaneously as magnetic caused by electromagnetic method
Power index decreased with the increase of magnetic line of force spreading distance, and need very big magnetic force to attract to transport for high viscosity measurement
Dynamic float, huge coil is set and larger output power causes the measurement apparatus of this application case to lose more than gain, therefore the Shen
Please case only facilitate low viscosity fluid is measured, the scope of application is narrower.
Utility model content
1. utility model technical problems to be solved
The purpose of this utility model be to overcome in the prior art liquid viscosity measuring operation inconvenience, accuracy in detection it is not high
Deficiency, there is provided it is a kind of based on fall magnetic method detection liquid viscosity detection means, the utility model using magnetic bodies in gold
Belong to free-falling in pipe, according to Lenz's law, electromagnetic resistance can be produced in pipe, slowing down magnetic bodies, free-falling is transported in a liquid
Dynamic speed, and the magnetic bodies in causing to fall and break is rapidly achieved at the uniform velocity state, so as to overcome current falling ball method tested viscosity
Many restrictions, it is applicable to measure low viscosity sample and improves measuring accuracy, and the not influence of liquid body printing opacity degree, this reality
The advantages that falling ball method is simple in construction, cost is low, reliability is high, installation operation facilitates also is inherited with new, in viscosity measurements
Have a wide range of applications.
2. technical scheme
To reach above-mentioned purpose, technical scheme provided by the utility model is：
It is of the present utility model a kind of based on the detection means for falling magnetic method detection liquid viscosity, including outer tube, open up in outer tube
There is inner chamber, the bottom of inner chamber is closed by lower end cap, testing liquid is held in inner chamber, magnetic is from inner cavity top in testing liquid
Middle free-falling.
Further, outer tube is containing metal or is provided with the tube-shaped tube of metal parts, the metal or metal portion of outer tube
Closed-loop path is formed between part.
Further, full-size of the magnetic along free-falling gravity vertical direction is less than the internal diameter of outer tube.
Further, magnetic is the symmetric figure structure with axis of rotation.
Further, magnetic is spheroid or cylinder or ellipsoidal configuration.
Further, high scale line and lower graduation mark are identified with the outer wall of outer tube respectively, is provided with high scale line upper
Trigger device, is provided with lower trigger device at lower graduation mark, upper trigger device and lower trigger device respectively with the first controller phase
Even, magnetic triggers upper trigger device and lower trigger device respectively from inner chamber during free-falling.
Further, upper trigger device and lower trigger device are the device for judging state, including tongue tube, magnetic
Trigger electrode, magnetic conductive metal snap switch, thin film switch, proximity transducer, magnet coil and inductance sensor.
Further, in addition to second controller, the closed-loop path that second controller is formed with outer tube is connected, and is used for
Detect caused induced-current in the closed-loop path.
Further, temperature sensor is additionally provided with inner chamber, temperature sensor is used to detect testing liquid temperature.
Detected, comprised the following steps using above-mentioned detection means：
Step 1: the bottom of outer tube is closed by lower end cap, and testing liquid is held in the lumen；
Step 2: make magnetic free-falling in testing liquid from inner cavity top；
Step 3: during magnetic free-falling, by detecting induced electricity caused by the closed-loop path of outer tube formation
Stream or the movement velocity by detecting magnetic, further calculate the viscosity of testing liquid.
3. beneficial effect
Using technical scheme provided by the utility model, compared with prior art, have the advantages that：
(1) it is of the present utility model a kind of based on the detection means for falling magnetic method detection liquid viscosity, outer tube be containing metal or
The tube-shaped tube of metal parts is installed, induced electromotive force will be produced when magnetic falls in outer tube and electromagnetism is produced to magnetic
Resistance, the appearance of electromagnetic resistance and quick increase slow down the falling speed of magnetic significantly, and reduce magnetic and reach at the uniform velocity
Time, magnetic is rapidly achieved at the uniform velocity state, thus increase measurement range and measurement accuracy, and simple in construction, user
Just.
(2) it is of the present utility model a kind of based on the detection means for falling magnetic method detection liquid viscosity, the metal or metal of outer tube
Closed-loop path is formed between part, fluid to be measured can be further calculated by detecting caused induced-current in the closed-loop path
Viscosity, eliminate the trouble of graduation mark position measurement；Simultaneously also without installation trigger device so that structure is simpler, can
Lean on.
(3) it is of the present utility model a kind of based on the detection means for falling magnetic method detection liquid viscosity, to magnetic and outer tube simultaneously
Limited without rigors, it is simple in construction, it is suitable to promote.
(4) it is of the present utility model a kind of based on the detection means for falling magnetic method detection liquid viscosity, go for low viscous
The detection of liquid is spent, the color of testing liquid is not limited, the scope of application and accuracy of detection all increase.
Brief description of the drawings
Fig. 1 is a kind of structural representation based on the detection means for falling magnetic method detection liquid viscosity of the present utility model；
Fig. 2 is a kind of structural representation based on the detection means for falling magnetic method detection liquid viscosity of the present utility model；
Fig. 3 is a kind of structural representation based on the detection means for falling magnetic method detection liquid viscosity of the present utility model；
Fig. 4 is a kind of structural representation based on the detection means for falling magnetic method detection liquid viscosity of the present utility model.
Label declaration in schematic diagram：1st, outer tube；2nd, inner chamber；3rd, upper plug head；4th, magnetic；5th, high scale line；6th, it is upper to touch
Transmitting apparatus；7th, the first controller；8th, lower graduation mark；9th, lower trigger device；10th, temperature sensor；11st, lower end cap；12nd, helix
Circle；13rd, framework；14th, second controller.
Embodiment
To further appreciate that content of the present utility model, the utility model is described in detail with reference to accompanying drawing.
As shown in figure 1, of the present utility model a kind of based on the detection means for falling magnetic method detection liquid viscosity, including outer tube 1,
Inner chamber 2 is offered in outer tube 1, the bottom of inner chamber 2 is closed by lower end cap 11, is used to hold testing liquid, magnetic in inner chamber 2
4 from the top free-fallings in testing liquid of inner chamber 2, its middle external tube 1 containing metal or to be provided with the tube-shaped tube of metal parts,
Form closed-loop path between the metal or metal parts of outer tube 1, the device using when follow the steps below detection：
Step 1: the bottom of outer tube 1 is closed by lower end cap 11, and testing liquid is held in inner chamber 2；
Step 2: make magnetic 4 from the top free-falling in testing liquid of inner chamber 2；
Step 3: during the free-falling of magnetic 4, by detecting sensing caused by the closed-loop path of the formation of outer tube 1
Electric current or the movement velocity by detecting magnetic 4, you can further calculate the viscosity of testing liquid.With reference to specific implementation
The utility model will be further described for example.
Embodiment 1
As shown in Fig. 2 the present embodiment a kind of based on the detection means for falling magnetic method detection liquid viscosity, including outer tube 1, outside
Inner chamber 2 is offered in pipe 1, testing liquid is contained with inner chamber 2, the bottom of inner chamber 2 is closed by lower end cap 11, the top of inner chamber 2
Closed by upper plug head 3 in portion；Magnetic 4 is placed with inner chamber 2, is identified with high scale line 5 and lower quarter on the outer wall of outer tube 1 respectively
Line 8 is spent, upper trigger device 6 is provided with high scale line 5, lower trigger device 9 is provided with lower graduation mark 8, upper trigger device 6 is with
Trigger device 9 is connected with the first controller 7 respectively, and high scale line 5 and lower scale are passed through in the free-falling from inner chamber 2 of magnetic 4
Trigger device 6 and lower trigger device 9 are triggered during line 8 respectively, upper trigger device 6 and lower trigger device 9 are respectively to the first control
Device 7 sends signal, and the reception signal of the first controller 7 simultaneously records magnetic 4 by time when high scale line 5 and lower graduation mark 8,
Speed of the magnetic 4 here away from interior uniform descent can be calculated with reference to the spacing between high scale line 5 and lower graduation mark 8,
It is further carried out the calculating of liquid viscosity.Wherein the selection of the first controller 7 belongs to known technology in industry with setting,
This is repeated no more.
It should be noted that outer tube 1 is containing metal or is provided with the tube-shaped tube of metal parts, the metal or gold of outer tube 1
Belong to part and form closed-loop path, can flexibly use multiple structural forms in practical application, including outer tube 1 is directly disposed as metal
Or containing metal tube, or outer tube 1 is arranged to containing metal or is provided with the non-metallic pipe of metal parts, or outer tube 1 is arranged to
Outer ring is wound with non-metallic pipe of spiral winding 12 (metal parts) etc., outer tube 1 is formed closed-loop path, herein no longer
It is exhaustive one by one.As shown in Fig. 2 outer tube 1 uses metal tube, the metallic conductor material of specific usable nonferromagnetic and weak magnetic material
Material, such as copper pipe, aluminum pipe；Upper trigger device 6 and lower trigger device 9 are the device for judging state, can specifically use dry spring
Pipe；Magnetic 4 is the arbitrary shape structure for being less than the internal diameter of outer tube 1 along the full-size of free-falling gravity vertical direction, preferably
For the symmetric figure structure with axis of rotation, the present embodiment can use sphere structure.
When being detected using the detection means of the present embodiment, specific detection method is as follows：
Step 1: holding testing liquid in the inner chamber 2 of outer tube 1, the bottom of outer tube 1 is closed by lower end cap 11, for just
In measurement, the top of outer tube 1 is closed by upper plug head 3, and for sealing testing liquid, magnetic 4 is put in inner chamber 2；
Step 2: make the free-falling in testing liquid of magnetic 4；When specifically used, can by the bottom of outer tube 1 upward, top
End is first placed upside down the installation for carrying out upper plug head 3, magnetic 4 and lower end cap 11 down, then quickly falls mounted outer tube 1
It is vertical, then the movement of falling object since top of magnetic 4；Calutron can also be used or magnetic is realized in mechanical device auxiliary release
The free-falling of body 4, there are in industry a variety of auxiliary falling apparatus will not be described in detail herein；
Step 3: magnetic 4 is controlled by triggering upper trigger device 6, upper trigger device 6 during high scale 5 position of line to first
Device 7 processed sends signal, and the first controller 7 record magnetic 4 passes through time T1 during high scale line 5；
Step 4: magnetic 4 continues to fall, by triggering lower trigger device 9, lower trigger device 9 during lower 8 position of graduation mark
Signal is sent to the first controller 7, the first controller 7 record magnetic 4 passes through time T2 during lower graduation mark 8；
Step 5: the distance between high scale line 5 and lower graduation mark 8 L, time difference Δ T=T2- are passed through according to magnetic 4
T1, further calculate the viscosity of testing liquid.
The principle of the detection method is：When the freely falling body of magnetic 4 of axially symmetric structure passes through than own profile size slightly
During big metal outer pipe 1, the metallic walls of outer tube 1 will produce induced electromotive force, and the metal outer pipe 1 of tubular forms closed-loop path, sense
Answer electromotive force to drive electronics to flow, form induced-current, faradic magnetic field produces resistance to the magnetic 4 of free-falling and made
With, when magnetic 4 falls in outer tube 1, constant speed will be rapidly achieved, and keep the speed at the uniform velocity to fall, and falling direction
Substantially, uniform descent speed v=L/ Δ T coaxial with outer tube 1 consistent with center of gravity direction is kept.
Viscosity is that one kind of fluid viscosity is measured, and is that fluid flow forces are represented one kind of its internal friction phenomenon, by
In the effect of viscosity, by flow resistance when making the object move in a fluid, when the spheroid that radius is r, quality m, volume are V
Magnetic 4, with speed v in uniform broad Liquid, liquid sticky resistance F=6 π η υ r that magnetic 4 is subject to, its
Middle η is the viscosity of testing liquid.The stress relation that the magnetic 4 of the present embodiment at the uniform velocity falls in testing liquid is：By
Downward gravity mg, upward liquid buoyancy ρ Vg, upward liquid sticky resistance F=6 π η υ r and upward electromagnetic resistance FZAltogether
Same-action and holding balance, i.e. mg=ρ Vg+FZ+ 6 π η ν r, it is possible thereby to further calculate the viscosities il of testing liquid.Wherein
Electromagnetic resistance FZCalculating belong to known technology, with the mass of magnetic 4, geomery, the diameter of outer tube 1, the resistivity of material of outer tube 1
Etc. relevant, will not be described in detail herein.
When magnetic 4 starts to fall in the present embodiment, speed is smaller, and liquid sticky resistance and electromagnetic resistance are all smaller, magnetic
Property body 4 makees acceleration decline, and as falling speed increases, liquid sticky resistance and electromagnetic resistance gradually increase, and final speed reaches
To liquid sticky resistance, electromagnetic resistance, liquid buoyancy and gravitational equilibrium during certain value, magnetic 4 starts at the uniform velocity to fall, and keeps
At the uniform velocity v gradually passes through high scale line 5 and lower graduation mark 8.The appearance of electromagnetic resistance and quick increase slow down significantly in the present embodiment
The falling speed of magnetic 4, and reduce magnetic 4 and reach time at the uniform velocity, magnetic 4 is rapidly achieved at the uniform velocity state, by
This increase measurement range and measurement accuracy, and it is simple in construction, it is easy to use.
High scale line 5 and lower graduation mark 8 are determined according to the uniform motion section of magnetic 4 during the present embodiment practical operation
Position, the uniform motion section can be detected by multiple spot position and be determined, ensure magnetic 4 in high scale line 5 and lower scale
Remain a constant speed whereabouts between line 8；Secondly, length of the high scale line 5 apart from the top of outer tube 1 is more than the 1/10 of the length of outer tube 1, so as to
Overcome marginal influence, further ensure accuracy of detection.It should also be noted that, in production practices magnetic 4 velocity measuring side
Method is rich and varied, can be adjusted flexibly according to site environment, can still use manual or automatic control timing mode etc..
The detection method of the present embodiment is simple to operate, is easy to implement, and can be applicable to the detection to low-viscosity (mobile) liquid, right
The color of testing liquid does not limit, and the scope of application and accuracy of detection all increase.
Embodiment 2
The present embodiment it is a kind of based on the detection means for falling magnetic method detection liquid viscosity, basic structure is with embodiment 1, and institute is not
With upper trigger device 6 and lower trigger device 9 use magnetic trigger electrode in the present embodiment；Magnetic 4 is cylinder knot
Structure；Secondly, the outer tube 1 in the present embodiment is wound with the non-metallic pipe of spiral winding 12 for periphery, and spiral winding 12 forms closure
Loop, similarly, when magnetic 4 falls in outer tube 1, spiral winding 12 will produce induced electromotive force, and the shape of spiral winding 12
Into closed-loop path, induced electromotive force drives electronics to flow to form induced-current, magnetic of the faradic magnetic field to free-falling
Body 4 produces drag effect, it is rapidly achieved constant speed and the whereabouts that remains a constant speed.Using detection side same as Example 1
Formula can calculate the viscosity of testing liquid.
Embodiment 3
The present embodiment it is a kind of based on fall magnetic method detection liquid viscosity detection means, it is different substantially with embodiment 1
It is that upper trigger device 6 and lower trigger device 9 use magnetic conductive metal snap switch in the present embodiment；Magnetic 4 is ellipsoid
Structure；Outer tube 1 is the non-metallic pipe for being provided with metal parts；Secondly, the detection means of the present embodiment also includes framework 13, framework
At least two outer tubes 1 are provided with 13, two outer tubes 1 is illustrated in figure 3 and is installed in parallel, similarly, be identified with each outer tube 1
High scale line 5 and lower graduation mark 8, and trigger device 6 and lower trigger device 9 are correspondingly provided with, the upper triggering dress on each outer tube 1
Put 6 and lower trigger device 9 be connected respectively with same first controller 7.The present embodiment carries out viscosity survey using bilateral outer tube 1
Examination, both different liquid viscosities can detect simultaneously, and contrast test can also be carried out to same liquid viscosity, reduce the back of the body
Scape (such as temperature, vibration) disturbing influence, further ensures detection accuracy.
Embodiment 4
The present embodiment it is a kind of based on fall magnetic method detection liquid viscosity detection means, it is different substantially with embodiment 1
It is that upper trigger device 6 and lower trigger device 9 use thin film switch in the present embodiment；Secondly, gone back in the present embodiment in inner chamber 2
Provided with temperature sensor 10, specifically temperature sensor 10 can be located on lower end cap 11 and be connected with the first controller 7.Temperature passes
Sensor 10 is used to detect fluid temperature to be measured in real time, and the viscosity with temperature change of liquid, is aided in simultaneously in practical application
With the measurement of fluid temperature, it is more convenient for carrying out data comparison and analysis, more has directive significance to practical application.
Embodiment 5
The present embodiment it is a kind of based on fall magnetic method detection liquid viscosity detection means, it is different substantially with embodiment 1
It is that upper trigger device 6 and lower trigger device 9 use proximity transducer in the present embodiment.
Embodiment 6
The present embodiment it is a kind of based on fall magnetic method detection liquid viscosity detection means, it is different substantially with embodiment 1
It is that upper trigger device 6 and lower trigger device 9 use magnet coil in the present embodiment.
Embodiment 7
The present embodiment it is a kind of based on fall magnetic method detection liquid viscosity detection means, it is different substantially with embodiment 1
It is that upper trigger device 6 and lower trigger device 9 use inductance sensor in the present embodiment.
Embodiment 8
A kind of based on the detection means for falling magnetic method detection liquid viscosity, including the outer tube 1 of the present embodiment, open up in outer tube 1
There is inner chamber 2, testing liquid is held in inner chamber 2, the bottom of inner chamber 2 is closed by lower end cap 11, and outer tube 1 forms closed-loop path (tool
Body, outer tube 1 can be set to containing metal or be provided with the tube-shaped tube of metal parts, and the metal or metal parts of outer tube 1, which are formed, to be closed
Loop is closed, can flexibly use multiple structural forms in practical application, including outer tube 1 is directly disposed as metal or containing metal tube,
Or outer tube 1 is arranged to containing metal or is provided with the non-metallic pipe of metal parts, or outer tube 1 is arranged to outer ring and is wound with spiral shell
It is non-metallic pipe of spin line circle 12 etc., outer tube 1 is formed closed-loop path, no longer exhaustive one by one herein), place in inner chamber 2
Be magnetic body 4, and the closed-loop path that second controller 14 is formed with outer tube 1 is connected, and caused in the closed-loop path for detecting
Induced-current.As shown in figure 4, the present embodiment outer tube 1 is wound with the non-metallic pipe of spiral winding 12, spiral winding 12 using periphery
Closed-loop path is formed, the closed-loop path that second controller 14 is formed with spiral winding 12 is connected, and for detecting the closed-loop path
In caused induced-current, similarly, when magnetic 4 falls in the outer tube 1, spiral winding 12 will produce induced electromotive force, and spiral shell
Spin line circle 12 forms closed-loop path, and induced electromotive force drives electronics to flow to form induced-current, and faradic magnetic field is to freedom
The magnetic 4 of whereabouts produces drag effect, it is rapidly achieved constant speed and the whereabouts that remains a constant speed.
Using the detection means of the present embodiment, magnetic 4 during free-falling, can be closed in testing liquid by measuring
Induced-current caused by loop completes the measurement to liquid viscosity, specifically includes following steps：
Step 1: holding testing liquid in the inner chamber 2 of outer tube 1, the bottom of outer tube 1 is closed by lower end cap 11, outer tube 1
Top can be closed by upper plug head 3 testing liquid is sealed；
Step 2: make the free-falling in testing liquid of magnetic 4；
Step 3: second controller 14 is connected with the closed-loop path that outer tube 1 is formed, and detect caused by the closed-loop path
Induced-current, the viscosity of testing liquid is further calculated according to the induced-current measured.
The detection means of the present embodiment is in use, the free-falling in outer tube 1 of magnetic 4, spiral winding 12 produce sensing
Electromotive force and induced-current, faradic magnetic field produce drag effect, as falling speed increases, induced electricity to magnetic 4
Stream increases therewith, when induced-current reaches certain value, gravity mg, liquid buoyancy ρ Vg, liquid sticky resistance F=6 π η υ r and electricity
Reluctance force FZCollective effect keeps balance, and the speed at the uniform velocity to be fallen according to magnetic 4 can further calculate fluid to be measured
Viscosity, and when all physical dimensions of detection means determine, the speed that magnetic 4 at the uniform velocity falls is reacted to be reached for induced-current
The steady state value arrived, therefore the current value under maximum constant state is reached by induced-current caused by measuring outer tube 1 can enter one
Step calculates the viscosity of fluid to be measured.The present embodiment calculates viscosity by detecting induced-current, eliminates graduation mark measurement
Trouble, without installation trigger device, structure is more simple, and use is more convenient.
Embodiment 9
The present embodiment it is a kind of based on fall magnetic method detection liquid viscosity detection means, it is different substantially with embodiment 8
It is that the present embodiment middle external tube 1 is metal tub pipe, outer tube 1 forms closed-loop path, and graduation mark need not be still set on outer tube 1 and is touched
Transmitting apparatus, second controller 14 is connected on the closed-loop path of the formation of outer tube 1, by detecting induced electricity caused by the closed-loop path
Flow valuve further calculates testing liquid viscosity；Similarly, the temperature for detecting detection fluid temperature is additionally provided with the present embodiment inner chamber 2
Spend sensor 10.
Schematically the utility model and embodiments thereof are described above, this describes no restricted, accompanying drawing
Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So if this area
Those of ordinary skill enlightened by it, do not depart from the utility model create objective in the case of, without creativeness design
The frame mode similar to the technical scheme and embodiment, the scope of protection of the utility model all should be belonged to.
Claims (9)
- It is 1. a kind of based on the detection means for falling magnetic method detection liquid viscosity, it is characterised in that：Including outer tube (1), opened in outer tube (1) Provided with inner chamber (2), the bottom of inner chamber (2) is closed by lower end cap (11), holds testing liquid in inner chamber (2), magnetic (4) from The free-falling in testing liquid at the top of inner chamber (2).
- It is 2. according to claim 1 a kind of based on the detection means for falling magnetic method detection liquid viscosity, it is characterised in that：Outer tube (1) containing metal or to be provided with the tube-shaped tube of metal parts, formed and closed back between the metal or metal parts of outer tube (1) Road.
- It is 3. according to claim 2 a kind of based on the detection means for falling magnetic method detection liquid viscosity, it is characterised in that：Magnetic Full-size of the body (4) along free-falling gravity vertical direction is less than the internal diameter of outer tube (1).
- It is 4. according to claim 3 a kind of based on the detection means for falling magnetic method detection liquid viscosity, it is characterised in that：Magnetic Body (4) is the symmetric figure structure with axis of rotation.
- It is 5. according to claim 4 a kind of based on the detection means for falling magnetic method detection liquid viscosity, it is characterised in that：Magnetic Body (4) is spheroid or cylinder or ellipsoidal configuration.
- It is 6. according to claim 2 a kind of based on the detection means for falling magnetic method detection liquid viscosity, it is characterised in that：Outer tube (1) high scale line (5) and lower graduation mark (8) are identified with outer wall respectively, high scale line (5) place is provided with upper trigger device (6), Lower graduation mark (8) place is provided with lower trigger device (9), upper trigger device (6) and lower trigger device (9) respectively with the first controller (7) it is connected, magnetic (4) triggers upper trigger device (6) and lower trigger device (9) respectively from inner chamber (2) during free-falling.
- It is 7. according to claim 6 a kind of based on the detection means for falling magnetic method detection liquid viscosity, it is characterised in that：It is upper to touch Transmitting apparatus (6) and lower trigger device (9) are the device for judging state, including tongue tube, magnetic trigger electrode, magnetic conductivity gold Belong to snap switch, thin film switch, proximity transducer, magnet coil and inductance sensor.
- It is 8. according to claim 2 a kind of based on the detection means for falling magnetic method detection liquid viscosity, it is characterised in that：Also wrap Second controller (14) is included, the closed-loop path that second controller (14) is formed with outer tube (1) is connected, and is returned for detecting the closure Caused induced-current in road.
- It is 9. a kind of based on the detection means for falling magnetic method detection liquid viscosity, its feature according to any one of claim 1~8 It is：Temperature sensor (10) is additionally provided with inner chamber (2), temperature sensor (10) is used to detect testing liquid temperature.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389506A (en) * | 2017-09-14 | 2017-11-24 | 深圳市先波科技有限公司 | It is a kind of based on fall magnetic method detection liquid viscosity detection means and its detection method |
| CN109030948A (en) * | 2018-08-02 | 2018-12-18 | 王久钰 | The measuring device and measurement method of resistivity |
| CN112284974A (en) * | 2020-10-29 | 2021-01-29 | 安徽江淮汽车集团股份有限公司 | Oil product kinematic viscosity detection device, comparison method and measurement method |
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| CN107389506A (en) * | 2017-09-14 | 2017-11-24 | 深圳市先波科技有限公司 | It is a kind of based on fall magnetic method detection liquid viscosity detection means and its detection method |
| CN107389506B (en) * | 2017-09-14 | 2019-03-26 | 深圳市先波科技有限公司 | It is a kind of based on fall magnetic method detection liquid viscosity detection device and its detection method |
| CN109030948A (en) * | 2018-08-02 | 2018-12-18 | 王久钰 | The measuring device and measurement method of resistivity |
| CN109030948B (en) * | 2018-08-02 | 2020-09-11 | 王久钰 | Resistivity measuring device and measuring method |
| CN112284974A (en) * | 2020-10-29 | 2021-01-29 | 安徽江淮汽车集团股份有限公司 | Oil product kinematic viscosity detection device, comparison method and measurement method |
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