CN2525508Y - Magnetic flux changing liquid shear yield strength detector - Google Patents
Magnetic flux changing liquid shear yield strength detector Download PDFInfo
- Publication number
- CN2525508Y CN2525508Y CN 02209684 CN02209684U CN2525508Y CN 2525508 Y CN2525508 Y CN 2525508Y CN 02209684 CN02209684 CN 02209684 CN 02209684 U CN02209684 U CN 02209684U CN 2525508 Y CN2525508 Y CN 2525508Y
- Authority
- CN
- China
- Prior art keywords
- flow liquid
- magnetic flow
- magnetic flux
- changing liquid
- yield strength
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model provides a magnetic flux changing liquid shear yield strength detector, wherein, a connecting axle is arranged on a frame; one end of the connecting axle is provided with a stepping motor and a torque sensor; the other end of the connecting axle is provided with a rotation shear circular plate; a magnetic flux changing liquid tray is arranged on the frame; the magnetic flux changing liquid tray has an edge wall on the surrounding. A magnetic flux changing liquid cavity is arranged between the rotation shear circular plate and the magnetic flux changing liquid tray. An excitation coil and an iron core are arranged on the frame. The utility model has the advantages of simple structure, wide measuring range, reliable performance and high automation degree, and etc.
Description
(1) technical field
The utility model relates to a kind of tester, specifically a kind of measurement magnetic flow liquid shear yield strength tester.
(2) background technology
Magnetic flow liquid is a kind of new-type functional material, and it can become the Bingham plastic solid of the lazy flow under the high-intensity magnetic field condition by the Newtonian fluid of the good fluidity under zero magnetic field condition.Up to the present the magnetic flow liquid shear yield strength tester that does not also have a kind of moulding.Existing tester mainly is to transform to form on the basis of the rotational viscosimeter of common fluid.It makes the yield strength that moment of torsion that the inside and outside drum of relative motion produces because of magnetic flow liquid comes Fluid Computation by measurement, because the test result of magnetic flow liquid, the magnetic direction that needs to guarantee two barrels of gaps is parallel to inside and outside bucket radially, therefore, the magnetic Circuit Design of this kind equipment is very complicated, and, be difficult in the gap between the inside and outside bucket and produce the very high magnetic field of intensity because of structural limitations.
(3) summary of the invention
The purpose of this utility model is to provide a kind of simple in structure, broad quantum, magnetic flow liquid shear yield strength tester that automaticity is high.The purpose of this utility model is achieved in that installs coupling shaft on framework, one end of coupling shaft is installed stepper motor, torque sensor, the other end of coupling shaft is installed the rotational shear plectane, the magnetic flow liquid pallet is set on framework, the periphery of magnetic flow liquid pallet has along wall, between rotational shear plectane and the magnetic flow liquid pallet magnetorheological sap cavity is arranged, field coil and iron core thereof are installed on the framework.The utility model utilizes field coil to produce higher, as can to regulate with the strength of current size of a field coil magnetic field intensity between magnetic flow liquid pallet and rotational shear plectane.Utilize the stepper motor driven rotary to shear plectane and rotate, and measure the moment of torsion that produces by the magnetic flow liquid after the rheology between rotational shear plectane and the magnetic flow liquid pallet by torque sensor.Under a certain magnetic field intensity, the shear yield strength of magnetic flow liquid can calculate by following formula,
τ in the formula
yShear yield strength for magnetic flow liquid, T is the moment of torsion that transmits by the magnetic flow liquid after the rheology between rotational shear plectane and the magnetic flow liquid pallet, R is the diameter of rotational shear plectane, the angular frequency that ω rotates for the rotational shear plectane, the i.e. angular frequency of electric rotating machine.Because the angular frequency of stepper motor is default by the device driver, and moment of torsion can be surveyed.Therefore, each parameter of following formula right side is known conditions, thereby can calculate the shear yield strength of magnetic flow liquid under magnetic field condition.By regulating the electric current of field coil, repeating above process, then can obtain the shear yield strength under another magnetic field.The utlity model has simple in structure, broad quantum, dependable performance, automaticity advantages of higher.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of magnetic flow liquid pallet and rotational shear plectane.
(5) specific embodiments
For a more detailed description to the utility model for example below in conjunction with accompanying drawing: that coupling shaft 7 is installed on framework 9, one end of coupling shaft is installed stepper motor 1, torque sensor 6, the other end of coupling shaft is installed rotational shear plectane 2, magnetic flow liquid pallet 8 is set on framework, the periphery of magnetic flow liquid pallet has along wall 12, magnetorheological sap cavity 3 is arranged between rotational shear plectane and the magnetic flow liquid pallet, field coil 5 and iron core 4 thereof are installed on the framework.And have dovetail groove on the iron core that the magnetic flow liquid pallet is connected, the bottom of magnetic flow liquid pallet has the latch that matches with dovetail groove.Coupling shaft is lifted, the magnetic flow liquid pallet can be taken off from iron core, fluid to be measured is encased in the magnetorheological sap cavity, the magnetic flow liquid pallet is being inserted on the iron core, coupling shaft is loaded in the rotational shear plectane and can tests.
Claims (2)
1, a kind of magnetic flow liquid shear yield strength tester, it is characterized in that: coupling shaft is installed on framework, one end of coupling shaft is installed stepper motor, torque sensor, the other end of coupling shaft is installed the rotational shear plectane, the magnetic flow liquid pallet is set on framework, the periphery of magnetic flow liquid pallet has along wall, between rotational shear plectane and the magnetic flow liquid pallet magnetorheological sap cavity is arranged, and field coil and iron core thereof are installed on the framework.
2, magnetic flow liquid shear yield strength tester according to claim 1 is characterized in that: with have dovetail groove on the iron core that the magnetic flow liquid pallet is connected, the bottom of magnetic flow liquid pallet has the latch that matches with dovetail groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02209684 CN2525508Y (en) | 2002-01-09 | 2002-01-09 | Magnetic flux changing liquid shear yield strength detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02209684 CN2525508Y (en) | 2002-01-09 | 2002-01-09 | Magnetic flux changing liquid shear yield strength detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2525508Y true CN2525508Y (en) | 2002-12-11 |
Family
ID=33690049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02209684 Expired - Fee Related CN2525508Y (en) | 2002-01-09 | 2002-01-09 | Magnetic flux changing liquid shear yield strength detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2525508Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506640B (en) * | 2006-08-23 | 2013-02-27 | 巴斯夫欧洲公司 | Rheometer |
| CN103901168A (en) * | 2014-04-08 | 2014-07-02 | 中国矿业大学 | Magnetorheological fluid behavior tester |
| CN104897519A (en) * | 2015-06-05 | 2015-09-09 | 福建工程学院 | Shear extrusion rheometer |
| CN104913871A (en) * | 2015-05-18 | 2015-09-16 | 上海应用技术学院 | Single-coil magnetorheological fluid normal stress testing device |
| CN109357973A (en) * | 2018-12-14 | 2019-02-19 | 沈阳建筑大学 | A kind of magnetorheological liquid viscosity test device and test method |
-
2002
- 2002-01-09 CN CN 02209684 patent/CN2525508Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506640B (en) * | 2006-08-23 | 2013-02-27 | 巴斯夫欧洲公司 | Rheometer |
| CN103901168A (en) * | 2014-04-08 | 2014-07-02 | 中国矿业大学 | Magnetorheological fluid behavior tester |
| CN103901168B (en) * | 2014-04-08 | 2015-09-23 | 中国矿业大学 | A kind of magnetic flow liquid characteristic tester |
| CN104913871A (en) * | 2015-05-18 | 2015-09-16 | 上海应用技术学院 | Single-coil magnetorheological fluid normal stress testing device |
| CN104897519A (en) * | 2015-06-05 | 2015-09-09 | 福建工程学院 | Shear extrusion rheometer |
| CN109357973A (en) * | 2018-12-14 | 2019-02-19 | 沈阳建筑大学 | A kind of magnetorheological liquid viscosity test device and test method |
| CN109357973B (en) * | 2018-12-14 | 2023-12-26 | 沈阳建筑大学 | Magnetorheological fluid viscosity testing device and testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |