CN113155674B - Rheological in-situ characterization and measurement device for magnetic liquid - Google Patents
Rheological in-situ characterization and measurement device for magnetic liquid Download PDFInfo
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- CN113155674B CN113155674B CN202110419093.1A CN202110419093A CN113155674B CN 113155674 B CN113155674 B CN 113155674B CN 202110419093 A CN202110419093 A CN 202110419093A CN 113155674 B CN113155674 B CN 113155674B
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- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
- G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
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Abstract
The invention relates to the technical field of flow characteristic testing of materials, in particular to a rheological in-situ characterization and measurement device for magnetic liquid. The rheological in-situ characterization and measurement device for the magnetic liquid comprises a base, a test tube, a first adjusting mechanism, a magnetic source, a second adjusting mechanism, an X-ray emitter and an X-ray receiver. The test tube comprises a straight tube section for containing the magnetic liquid to be tested, and the straight tube section is made of transparent materials. The first adjusting mechanism is connected with the base, and the testing tube is connected with the first adjusting mechanism. The magnetic source is capable of providing a magnetic field force to the magnetic liquid. The second adjusting mechanism is connected with the base, and the magnetic source is connected with the second adjusting mechanism. The X-ray emitter emits small-angle X-rays toward the magnetic liquid, and the X-ray receiver receives the X-rays passing through the magnetic liquid. The rheological in-situ characterization and measurement device can simultaneously realize the measurement of macroscopic rheological parameters and the characterization of microstructure change conditions of the magnetic liquid.
Description
Technical Field
The invention relates to the technical field of rheological measurement and characterization, in particular to a rheological in-situ characterization measuring device for magnetic liquid.
Background
Magnetic liquid seals are widely used in more and more industries as a sealing method capable of achieving 'zero leakage'. The measurement mode, measurement accuracy, structural style and the like of the rheological measurement device in the related art cannot meet the requirements of rheological property measurement of the magnetic liquid, and therefore, a rheological in-situ characterization measurement device specially for the magnetic liquid needs to be designed.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
To this end, embodiments of the present invention propose a rheological in-situ characterization measurement device for magnetic liquids.
The rheological in-situ characterization and measurement device for the magnetic liquid comprises the following components:
a base;
the test tube is provided with a first port and a second port which are opposite in the extending direction of the test tube, the test tube comprises a straight tube section for containing the magnetic liquid to be tested, the straight tube section extends along the horizontal direction, and the straight tube section is made of a transparent material so that an external camera can shoot the magnetic liquid;
the first adjusting mechanism is connected with the base, and the test tube is connected with the first adjusting mechanism so as to adjust the inclination angle and the position of the test tube through the first adjusting mechanism;
a magnetic source cooperable with the straight tube section to provide a magnetic field force to the magnetic liquid;
the second adjusting mechanism is connected with the base, and the magnetic source is connected with the second adjusting mechanism so as to adjust the inclination angle of the magnetic source through the second adjusting mechanism; and
the X-ray emitter and the X-ray receiver are respectively arranged on two opposite sides of the test tube, the X-ray emitter can be matched with the straight tube section so as to emit small-angle X-rays towards the magnetic liquid, and the X-ray receiver can be matched with the straight tube section so as to receive the X-rays passing through the magnetic liquid.
The rheological in-situ characterization and measurement device for the magnetic liquid can simultaneously realize the measurement of the macroscopic rheological parameters and the characterization of the microstructure change condition of the magnetic liquid.
In some embodiments, the straight tube section is rectangular in cross-section.
In some embodiments, the straight tube section has a cross-section with a ratio of length to width of 1.8-2.2.
In some embodiments, the sample injection device further comprises a sample injection platform connected to the first adjusting mechanism, the test tube is connected to the sample injection platform, the sample injection platform comprises a sample injection surface, a recess is formed in the sample injection surface, the test tube is arranged below the recess, and the first port and the recess are arranged opposite to each other in the vertical direction.
In some embodiments, the test tube further includes a connection section, the connection section extends in an up-down direction, the connection section and the straight tube section are L-shaped, the connection section is connected to the sample adding platform, the first port is disposed at an end of the connection section away from the straight tube section, and the second port is disposed at an end of the straight tube section away from the connection section.
In some embodiments, the magnetic source comprises a coil so as to generate a magnetic field force when the coil is energized.
In some embodiments, the coils are helmholtz coils, and the coils include a first coil and a second coil, the first coil and the second coil being arranged at an interval in an up-down direction, the straight tube section being located between the first coil and the second coil in the up-down direction, and the straight tube section passing through the first coil and the second coil in a horizontal direction.
In some embodiments, the first adjustment mechanism comprises:
the horizontal movement mechanism comprises a horizontal movement frame and a first motor, the horizontal movement frame is movably arranged on the base along the horizontal direction, and the first motor is used for driving the horizontal movement frame to move along the horizontal direction;
the vertical movement mechanism comprises a lifting platform and a second motor, the second motor is used for driving the lifting platform to lift, and the lifting platform is connected with the horizontal movement frame; and
the tilting mechanism comprises a tilting motion platform and a third motor, the third motor is used for driving the tilting motion platform to tilt, the tilting motion platform is connected with the lifting platform, and the test tube is connected with the tilting motion platform.
In some embodiments, the second adjustment mechanism is a Stewart parallel mechanism platform, the second adjustment mechanism includes a first platform, a second platform, and a plurality of branched chains, the first platform and the second platform are spaced apart in an up-down direction, each of the plurality of branched chains is connected to each of the first platform and the second platform, the first platform is connected to the base, and the second platform is connected to the magnetic source.
In some embodiments, the second adjustment mechanism is movably disposed on the base in a horizontal direction.
Drawings
Fig. 1 is a schematic structural diagram of a rheological in-situ characterization measurement device for magnetic liquid according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of another view angle of a rheological in-situ characterization measurement apparatus for magnetic liquids according to an embodiment of the present invention.
Fig. 3 is a schematic view of the structure of the test tube of fig. 1.
Reference numerals: rheological in situ characterization measurement device 100;
a base 1; a first guide rail 101; a second guide rail 102;
a test tube 2; a straight pipe section 201; a connection section 202; a first port 203; a second port 204;
a first adjusting mechanism 3; a horizontal movement mechanism 301; a horizontal moving frame 3011; the guide groove 30111; a first motor 3012; a vertical movement mechanism 302; scissor lift platform 3021; a second motor 3022; a first adjusting mechanism 3; a tilt movement mechanism 303; a tilting motion platform 3031; a third motor 3032;
a magnetic source 4; a coil 401;
a second adjusting mechanism 5; a first platform 501; a second platform 502; a branched chain 503; a slide table 504;
an X-ray emitter 6;
an X-ray receiver 7;
a sample addition platform 8; sample application surface 801.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
As shown in fig. 1 to 3, a rheological in-situ characterization and measurement device 100 for magnetic liquid (hereinafter referred to as rheological in-situ characterization and measurement device 100) according to an embodiment of the present invention includes a base 1, a test tube 2, a first adjustment mechanism 3, a magnetic source 4, a second adjustment mechanism 5, an X-ray emitter 6, and an X-ray receiver 7.
The test tube 2 has a first port 203 and a second port 204 opposed in the extending direction thereof, and the test tube 2 includes a straight tube section 201 for containing the magnetic liquid to be tested, the straight tube section 201 extending in a horizontal direction. The straight pipe section 201 is made of a transparent material so that an external camera can shoot the magnetic liquid. The magnetic source 4 can cooperate with the straight tube section 201 to provide a magnetic force to the magnetic liquid.
An X-ray emitter 6 and an X-ray receiver 7 are provided on opposite sides of the test tube 2, the X-ray emitter 6 cooperating with the straight tube section 201 to emit small-angle X-rays toward the magnetic liquid, and the X-ray receiver 7 cooperating with the straight tube section 201 to receive X-rays passing through the magnetic liquid.
The rheological in-situ characterization and measurement device 100 according to the embodiment of the invention can make the magnetic liquid in the straight pipe section 201 in the magnetic field by using the magnetic source 4; the inclination angle of the straight pipe section 201 can be adjusted by the first adjusting mechanism 3 so as to adjust the internal stress (shearing force) of the magnetic liquid in the straight pipe section 201 and enable the magnetic liquid in the straight pipe section 201 to generate laminar flow along the extending direction of the straight pipe section 201 under the action of gravity; the magnetic field direction of the magnetic source 4 can be adjusted by the second adjusting mechanism 5, so as to make the magnetic liquid in the straight pipe section 201 in the magnetic field with higher magnetic field uniformity and change the angle between the magnetic liquid in the straight pipe section 201 and the magnetic field force direction of the magnetic source 4.
Therefore, the position of the magnetic liquid is shot by an external camera in the flowing process of the magnetic liquid in the straight pipe section 201, so that the flow rate of the magnetic liquid can be obtained, and the shear rate of the magnetic liquid can be obtained by the flow rate and relevant parameters of the straight pipe section 201; the shearing stress of the magnetic liquid can be obtained by utilizing the inclination angle of the straight pipe section 201; and then the viscosity of the magnetic liquid can be obtained by utilizing the obtained shear stress and shear rate, so that the measurement of the macroscopic rheological parameters of the magnetic liquid is realized.
In addition, the position and the inclination angle of the straight tube section 201 can be adjusted by the first adjusting mechanism 3 or only the position of the straight tube section 201 can be adjusted by the first adjusting mechanism 3, so that the flowing magnetic liquid in the straight tube section 201 is always in the scattering light path of the small-angle X-ray emitted by the X-ray emitter 6 and is received by the X-ray receiver 7 after the small-angle X-ray passes through the magnetic liquid. The real-time in-situ characterization of the internal microstructure of the magnetic liquid in the straight pipe section 201 in the flowing process is realized, and the characterization of the microstructure change condition of the magnetic liquid is realized.
Therefore, the rheological in-situ characterization measurement device 100 according to the embodiment of the invention can simultaneously realize the measurement of the macrorheological parameters and the characterization of the microstructure change condition of the magnetic liquid.
The rheological in-situ characterization measurement device 100 according to an embodiment of the present invention is described in detail below with reference to the drawings.
As shown in fig. 1 to 3, the rheological in-situ characterization measuring device 100 according to the embodiment of the present invention includes a base 1, a test tube 2, a first adjusting mechanism 3, a magnetic source 4, a second adjusting mechanism 5, an X-ray emitter 6 and an X-ray receiver 7.
The test tube 2 has a first port 203 and a second port 204 opposed in the extending direction thereof, and the test tube 2 includes a straight tube section 201 for containing the magnetic liquid to be tested, the straight tube section 201 extending in a horizontal direction.
The straight pipe section 201 is made of a transparent material so that an external camera can shoot the magnetic liquid conveniently. For example, the straight pipe section 201 is made of glass, and preferably, the straight pipe section 201 is made of quartz glass. The camera may be a high speed camera.
In some embodiments, the straight tube section 201 is rectangular in cross-section. In other words, the straight tube section 201 is a rectangular tube section. Therefore, when the small-angle X-ray beam passes through the magnetic liquid in the straight pipe section 201, the thickness of the scattered part of the magnetic liquid film is uniform, and the testing accuracy of the rheological in-situ characterization measuring device 100 is improved.
Preferably, the straight tube section 201 has a cross-section with a ratio of length to width of 1.8-2.2. In other words, the ratio of L1 to L2 is 1.8 to 2.2 with the height of the straight tube section 201 in the up-down direction being L1 and the width of the straight tube section 201 in the horizontal direction being L2. For example, the straight tube section 201 has a cross section with a length to width ratio of 2.
In particular use, the X-ray emitter 6 emits small-angle X-rays in a horizontal direction towards the magnetic liquid.
In some embodiments, the rheological in-situ characterization and measurement device 100 further includes a sample application platform 8, the sample application platform 8 is connected to the first adjustment mechanism 3, the test tube 2 is connected to the sample application platform 8, the sample application platform 8 includes a sample application surface 801, a recess is disposed on the sample application surface 801, the test tube 2 is disposed under the recess, and the first port 203 and the recess are disposed opposite to each other.
For example, the entire sample application surface has a low middle and a high edge, and at this time, the entire sample application surface forms a concave portion; for another example, a part of the sample application surface is recessed to form a recess, and the rest is a plane with a uniform height.
Thus, when the magnetic liquid is applied to the test tube 2 through the first port 203, the magnetic liquid can be directly applied to the concave portion of the application surface 801, and then the magnetic liquid can be introduced into the test tube 2 through the first port 203 by gravity, thereby facilitating the application of the magnetic liquid to the test tube 2.
In other embodiments, the sample application platform may not be provided, and the magnetic liquid is directly applied to the test tube 2 from the first port 203. At this time, in order to add the magnetic liquid into the test tube 2 conveniently, an auxiliary device such as a dropper can be used for sample adding operation.
Preferably, the test tube 2 further comprises a connecting section 202, the connecting section 202 extends along the up-down direction, the connecting section 202 and the straight tube section 201 are L-shaped, the connecting section 202 is connected with the sample adding platform 8, the first port 203 is arranged at one end of the connecting section 202 far away from the straight tube section 201, and the second port 204 is arranged at one end of the straight tube section 201 far away from the connecting section 202.
For example, as shown in fig. 3, the test tube 2 is an L-shaped tube, a vertical portion of the L-shaped tube is a connecting section 203, a horizontal portion of the L-shaped tube is a straight tube section 204, the first port 203 is provided on an upper end portion of the vertical portion, and the second port 204 is provided on an end portion of the horizontal portion away from the vertical portion.
Therefore, the connecting section 202 with longer length is connected with the sample adding platform 8, so that the test tube 2 is conveniently connected with the sample adding platform.
Preferably, the inner surface of the test tube 2 is hydrophobically modified. Therefore, blockage in the flowing process of the magnetic liquid is avoided.
The magnetic source 4 can cooperate with the straight tube section 201 to provide a magnetic force to the magnetic liquid. For example, the straight pipe section 201 is located within the magnetic field of the magnetic source 4, and the magnetic source 4 is used to provide a magnetic force to the magnetic liquid within the straight pipe section 201.
In some embodiments, the magnetic source 4 comprises a coil 401 to generate a magnetic field force when the coil is energized.
Therefore, the magnitude of the magnetic field force can be changed by changing the magnitude of the current flowing through the coil, and the direction of the magnetic field force can be changed by changing the direction of the current flowing through the coil, so that the magnetic liquid can be conveniently measured and characterized in a macroscopic view and a microscopic view under different magnetic field conditions.
Preferably, the coil is a helmholtz coil, the coil 401 includes a first coil and a second coil, the first coil and the second coil are arranged at an interval in the up-down direction, the straight pipe section 201 is located between the first coil and the second coil in the up-down direction, and the straight pipe section 201 passes through the first coil and the second coil in the horizontal direction.
Therefore, the magnetic field formed when the Helmholtz coil is electrified is a uniform magnetic field in a large range, and the magnetic field is in a region with high magnetic field uniformity in the magnetic liquid practice.
In some embodiments, the first adjustment mechanism 3 includes a horizontal movement mechanism 301, a vertical movement mechanism 302, and a tilt movement mechanism 303.
The horizontal moving mechanism 301 includes a horizontal moving frame 3011 and a first motor 3012, the horizontal moving frame 3011 is movably disposed on the base 1 along the horizontal direction, and the first motor 3012 is used to drive the horizontal moving frame 3011 to move along the horizontal direction.
The vertical movement mechanism 302 comprises a lifting platform 3021 and a second motor 3022, the second motor 3022 is used for driving the lifting platform 3021 to lift, and the lifting platform 3021 is connected with the horizontal movement frame 3011.
The tilting motion mechanism 303 comprises a tilting motion platform 3031 and a third motor 3032, wherein the third motor 3032 is used for driving the tilting motion platform 3031 to tilt, the tilting motion platform 3031 is connected with the lifting platform 3021, and the test tube 2 is connected with the tilting motion platform 3031.
From this, utilize horizontal motion mechanism 301 conveniently to realize the position control of the horizontal direction of test tube 2, utilize vertical motion mechanism 302 conveniently to realize the position control of the vertical direction of test tube 2, utilize tilt motion mechanism 303 conveniently to realize the regulation of the inclination of test tube 2.
In other embodiments, the horizontal movement mechanism 301, the vertical movement mechanism 302, and the tilt movement mechanism 303 may be known.
Preferably, the base 1 is provided with a first guide rail 101, the first guide rail 101 extends along a horizontal direction, the horizontal moving frame 3011 is provided with a guide slot 30111, and the guide slot 30111 is matched with the first guide rail 101. This is advantageous in improving the reliability of the horizontal movement mechanism 301 by the guiding action between the first guide rail 101 and the guide groove 30111.
Preferably, a ball screw is provided between the first motor 3012 and the horizontal moving frame 3011, and the first motor 3012 drives the horizontal moving frame 3011 to move in the horizontal direction through the ball screw.
Preferably, the lifting platform 3021 is a scissor-fork type lifting platform, so that the lifting platform 3021 has good stability of lifting movement, which is beneficial to improving the movement reliability of the lifting platform 3021.
Preferably, the angular variation of the tilt mechanism 303 is in the range of 0-15 °.
The X-ray emitter 6 and the X-ray receiver 7 are respectively provided on opposite sides of the test tube 2, the X-ray emitter 6 is engaged with the straight tube section 201 to emit small-angle X-rays toward the magnetic liquid, and the X-ray receiver 7 is engaged with the straight tube section 201 to receive X-rays passing through the magnetic liquid.
In some embodiments, the second adjusting mechanism 5 is a Stewart parallel mechanism platform, the second adjusting mechanism 5 includes a first platform 501, a second platform 502, and a plurality of branches 503, the first platform 501 and the second platform 502 are arranged at intervals in the up-down direction, each of the plurality of branches 503 is connected to each of the first platform 501 and the second platform 502, the first platform 501 is connected to the base 1, and the second platform 502 is connected to the magnetic source 4.
Therefore, six-degree-of-freedom motion of the magnetic source 4 can be realized by using the Stewart parallel mechanism platform, and the magnetic field direction of the magnetic source 4, the included angle between the straight pipe section 201 and the magnetic field direction and the position of the magnetic liquid in the straight pipe section 201 in the magnetic field can be conveniently adjusted.
In some embodiments, the second adjustment mechanism 5 is movably disposed on the base 1 in a horizontal direction.
Therefore, when the rheological in-situ characterization measuring device 100 is used for measuring, coarse adjustment of the position between the straight pipe section 201 and the magnetic source 4 can be realized by moving the second adjusting mechanism 5 in the horizontal direction, and then fine adjustment of the positions of the straight pipe section 201 and the magnetic source 4 is performed by using the first adjusting mechanism 3 and the second adjusting mechanism 5 respectively, so that the position adjustment of the testing pipe 2 and the magnetic source 4 can be performed efficiently, and the measurement efficiency can be improved.
Preferably, the rheological in-situ characterization and measurement device 100 further includes a sliding table 504, the base 1 is provided with a second guide rail 102, the second guide rail 102 extends along the horizontal direction, the sliding table 504 is matched with the second guide rail 102, and the second adjustment mechanism 5 is connected with the sliding table 504. Thus, the reliability of the movement of the second adjustment mechanism 5 in the horizontal direction is advantageously improved by the guiding action between the second guide rail 102 and the slide table 504.
The rheological in-situ characterization and measurement device 100 provided by the embodiment of the invention realizes the rheological in-situ characterization function of the magnetic liquid, has a reasonable and reliable structure, and enables the micro-mechanism characterization behind the macroscopic rheological characteristics of the magnetic liquid to be possible. The method can be used for the performance research of the magnetic liquid, for example, the obtained macroscopic information and microscopic information are used for comparison so as to optimize the performance of the magnetic liquid.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A rheological in-situ characterization measurement device for magnetic liquids, comprising:
a base;
the test tube is provided with a first port and a second port which are opposite in the extending direction of the test tube, the test tube comprises a straight tube section for containing the magnetic liquid to be tested, the straight tube section extends along the horizontal direction, and the straight tube section is made of a transparent material so that an external camera can shoot the magnetic liquid;
the first adjusting mechanism is connected with the base, and the test tube is connected with the first adjusting mechanism so as to adjust the inclination angle and the position of the test tube through the first adjusting mechanism;
a magnetic source cooperable with the straight tube section to provide a magnetic field force to the magnetic liquid;
the second adjusting mechanism is connected with the base, and the magnetic source is connected with the second adjusting mechanism so as to adjust the inclination angle of the magnetic source through the second adjusting mechanism; and
the X-ray emitter and the X-ray receiver are respectively arranged on two opposite sides of the test tube, the X-ray emitter can be matched with the straight tube section so as to emit small-angle X-rays towards the magnetic liquid, and the X-ray receiver can be matched with the straight tube section so as to receive the X-rays passing through the magnetic liquid.
2. The rheological in-situ characterization and measurement device for magnetic liquids according to claim 1, wherein the straight tube section is rectangular in cross-section.
3. The rheological in-situ characterization measurement device for magnetic liquids according to claim 2, wherein the ratio of the length to the width of the cross section of the straight tube section is 1.8-2.2.
4. The rheological in-situ characterization and measurement device for magnetic liquid according to any one of claims 1 to 3, further comprising a sample application platform connected to the first adjustment mechanism, wherein the test tube is connected to the sample application platform, the sample application platform comprises a sample application surface, a recess is disposed on the sample application surface, the test tube is disposed below the recess, and the first port and the recess are disposed opposite to each other.
5. The rheological in-situ characterization and measurement device for magnetic liquid according to claim 4, wherein the test tube further comprises a connecting section extending in an up-down direction, the connecting section and the straight tube section are L-shaped, the connecting section is connected to the sample application platform, the first port is disposed at one end of the connecting section far away from the straight tube section, and the second port is disposed at one end of the straight tube section far away from the connecting section.
6. The rheological in-situ characterization measurement device for a magnetic liquid according to any one of claims 1-3, wherein the magnetic source comprises a coil so as to generate a magnetic field force when the coil is energized.
7. The rheological in-situ characterization measurement device for magnetic liquid according to claim 6, wherein the coils are Helmholtz coils, the coils comprise a first coil and a second coil, the first coil and the second coil are arranged at intervals in an up-down direction, the straight tube section is located between the first coil and the second coil in the up-down direction, and the straight tube section passes through the first coil and the second coil in a horizontal direction.
8. The rheological in-situ characterization measurement device for magnetic liquids according to any one of claims 1-3, wherein the first adjustment mechanism comprises:
the horizontal movement mechanism comprises a horizontal movement frame and a first motor, the horizontal movement frame is movably arranged on the base along the horizontal direction, and the first motor is used for driving the horizontal movement frame to move along the horizontal direction;
the vertical motion mechanism comprises a lifting platform and a second motor, the second motor is used for driving the lifting platform to lift, and the lifting platform is connected with the horizontal motion frame; and
the tilting mechanism comprises a tilting motion platform and a third motor, the third motor is used for driving the tilting motion platform to tilt, the tilting motion platform is connected with the lifting platform, and the test tube is connected with the tilting motion platform.
9. The rheological in-situ characterization measurement device for magnetic liquids according to any one of claims 1 to 3, wherein the second adjustment mechanism is a Stewart parallel mechanism platform, the second adjustment mechanism comprising a first platform, a second platform and a plurality of branches, the first platform and the second platform being spaced apart in an up-down direction, each of the plurality of branches being connected to each of the first platform and the second platform, the first platform being connected to the base, the second platform being connected to the magnetic source.
10. The rheological in-situ characterization and measurement device for magnetic liquids according to any one of claims 1-3, wherein the second adjustment mechanism is movably arranged on the base in a horizontal direction.
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| CN101701894A (en) * | 2009-10-30 | 2010-05-05 | 谭晓婧 | Test system of spindle-type magnetorheological fluid performance |
| CN104897523A (en) * | 2015-05-15 | 2015-09-09 | 上海交通大学 | Magnetic fluid rheological property test system and method |
| CN108679234A (en) * | 2018-07-04 | 2018-10-19 | 清华大学 | It is applicable in the rotational rheometer measuring system of magnetic liquid rheological behavior |
| CN110232853A (en) * | 2019-06-05 | 2019-09-13 | 杭州魔象智能科技有限公司 | A kind of magnetic fluid drop deformation and segregation phenomenon observation experiment system and test method |
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