WO2020006713A1 - 适用磁性液体流变特性的旋转流变仪测量系统 - Google Patents

适用磁性液体流变特性的旋转流变仪测量系统 Download PDF

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Publication number
WO2020006713A1
WO2020006713A1 PCT/CN2018/094527 CN2018094527W WO2020006713A1 WO 2020006713 A1 WO2020006713 A1 WO 2020006713A1 CN 2018094527 W CN2018094527 W CN 2018094527W WO 2020006713 A1 WO2020006713 A1 WO 2020006713A1
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ring
magnetically
magnetic
housing
plane
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French (fr)
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李德才
李倩
陈思宇
刘霄
孙睿
杨纪显
李钲皓
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Tsinghua University
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Tsinghua University
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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
    • G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
    • G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane

Definitions

  • the present invention relates to the technical field of measurement systems, and in particular to a rotational rheometer measurement system suitable for rheological properties of magnetic liquids.
  • the rheometer is an important tool for measuring the rheological properties of materials.
  • the design of the measurement system has an important impact on the accuracy and reliability of the measurement.
  • Magnetic liquid is a nano-scale magnetic functional material.
  • Magnetic liquid seals are one of the most mature applications of magnetic liquids, and are widely used in precision machinery, gas seals, vacuum seals, pressure seals, rotary seals, etc.
  • the rheological properties of the magnetic liquid in the gap of the magnetic liquid seal have an important influence on the pressure resistance of the magnetic liquid seal, whether the seal fails, and the resistance torque of the magnetic liquid seal.
  • the present invention aims to solve at least one of the technical problems in the related technology to a certain extent.
  • the purpose of the present invention is to propose a rotational rheometer measurement system suitable for the rheological properties of magnetic liquids.
  • the system is designed based on the actual structure of a magnetic liquid seal, which is very similar to the actual seal structure, and its measurement results can directly reflect Rheological properties of a magnetic liquid in a seal gap in a magnetic liquid seal structure.
  • an embodiment of the present invention provides a rotary rheometer measurement system applicable to the rheological properties of a magnetic liquid, including: a casing; a first magnetically conductive ring disposed in the casing; A first sealing ring is installed in a groove on the outer circumference of a magnetically permeable ring to form a first magnetically permeable ring with a sealing ring; a second magnetically permeable ring disposed inside the housing, the second magnetically permeable ring is outside A second seal ring is installed in a circumferential groove to form a second magnetically conductive ring with the seal ring; a first magnetically-shielded ring provided in the casing, a plane of the first magnetically-shielded ring and the first magnetically-shielded ring An upper plane of a magnetically permeable ring is attached; a second magnetic isolation ring provided in the casing, a plane of the second magnetic isolation ring is attached to an upper plane
  • the rotating rheometer measurement system using the rheological properties of the magnetic liquid according to the embodiment of the present invention is designed based on the actual structure of the magnetic liquid seal, and solves the small sealing gap (about 0.1 mm) and the magnetic field strength of the magnetic liquid seal. It is difficult to infer the rheological properties of magnetic liquids under actual working conditions caused by problems such as large, unknown magnetic liquid distribution, etc., and based on its test results, it can directly reflect the magnetic liquid in the sealing gap in the magnetic liquid seal structure. Purpose of rheological properties.
  • rotary rheometer measurement system applicable to the rheological properties of a magnetic liquid according to the above embodiment of the present invention may also have the following additional technical features:
  • an end cover provided on the housing, the end cover and the housing are connected by threads on an outer circumference of the housing, and a lower end of the end cover The plane is in conformity with the upper plane of the first magnetic isolation ring, wherein the measuring probe penetrates the center hole of the end cover and projects into the housing.
  • the first magnetically permeable ring and the second magnetically permeable ring both have a circular ring structure, and the inner surface is provided with pole teeth and cogging, and each magnetically conductive ring
  • the number of polar teeth is 2 to 10, the width of the polar teeth is greater than 0.3mm, and the width of the cogging is greater than 0.5mm.
  • a gap between the pole teeth of the first magnetic flux ring and the second magnetic flux ring and the measurement probe is 0.1 to 0.2 mm.
  • the measurement probe, the first magnetically permeable ring, and the second magnetically permeable ring are all magnetically permeable materials.
  • the case, the first magnetically-shielded ring and the second magnetically-shielded ring are all non-magnetic materials.
  • FIG. 1 is a schematic structural diagram of a measurement system for a rotational rheometer to which a rheological property of a magnetic liquid is applied according to an embodiment of the present invention.
  • Rotary rheometer measurement system 100 for rheological properties of magnetic liquids housing 1, first magnetically conductive ring 2, second magnetically conductive ring 3, first magnetically isolated ring 4, second magnetically isolated ring 5, annular permanent magnet 6.
  • FIG. 1 is a schematic structural diagram of a rotational rheometer measurement system applicable to the rheological properties of a magnetic liquid according to an embodiment of the present invention.
  • the rotational rheometer measurement system 100 applicable to the rheological properties of a magnetic liquid includes: a housing 1, a first magnetically conductive ring 2, a second magnetically conductive ring 3, a first magnetically isolated ring 4, and a second The magnetic isolation ring 5 and the ring-shaped permanent magnet 6, the first sealing ring 7, the second sealing ring 8, the measuring probe 9 and the end cover 10.
  • the housing 1 The first magnetically conductive ring 2 is disposed in the housing, and a first sealing ring 7 is installed in a groove on the outer circumference of the first magnetically conductive ring 2 to form the first magnetically conductive ring 2 with a sealing ring.
  • the second magnetically conductive ring 3 is disposed in the housing, and a second sealing ring 8 is installed in a groove on the outer circumference of the second magnetically conductive ring 3 to form a second magnetically conductive ring 3 with a sealing ring.
  • the first magnetic isolation ring 4 is disposed in the housing, and a plane of the first magnetic isolation ring 4 is abutted with an upper plane of the first magnetically conductive ring 2.
  • the second magnetically-shielded ring 5 is disposed in the housing, and the plane of the second magnetically-shielded ring 5 and the upper plane of the bottom of the housing 1 fit together, wherein the plane of the second magnetically-conductive ring 3 and the upper plane of the second magnetically-shielded ring 5 fit.
  • the ring-shaped permanent magnet 6 is disposed in the housing, and the plane of the ring-shaped permanent magnet 6 is attached to the upper plane of the second magnetically conductive ring 3, wherein the plane of the first magnetic ring 2 is attached to the upper plane of the ring-shaped permanent magnet 6 to
  • the measuring probe 9 is extended into the housing 1, and the position of the lower plane of the measuring probe 9 exceeds the lower plane of the second magnetically conductive ring 3 without contact.
  • the system 100 according to the embodiment of the present invention is designed based on the actual structure of the magnetic liquid seal, and is very similar to the actual seal structure. The measurement results can directly reflect the rheological properties of the magnetic liquid in the seal gap in the magnetic liquid seal structure.
  • the system 100 implemented by the present invention further includes: an end cover 10.
  • the end cover 10 is disposed on the housing 1, the end cover 10 and the housing 1 are connected by threads on the outer circumference of the housing, and the lower plane of the end cover 10 and the upper plane of the first magnetic isolation ring 4 are abutted, wherein, The measuring probe 9 projects through the central hole of the end cover 10 into the housing 1.
  • the magnetic liquid injected on the inner ring of the ring-shaped permanent magnet 6 will be redistributed and filled in the measuring probe 9 and the first magnetically conductive ring 2 and the second magnetically conductive ring 3 In the gap between the teeth.
  • the material of the ring-shaped permanent magnet 6 may be ferromagnetic, such as samarium-iron-boron, which is not specifically limited here. Its upper end face is N (S) pole and the lower end face is S (N) pole.
  • the magnetic field lines form a loop through the first magnetically conductive ring 2, the second magnetically conductive ring 3, and the measuring probe 9.
  • the type of the magnetic liquid should be selected according to the testing requirements of those skilled in the art, and is not limited here.
  • the case 1, the first magnetically-shielded ring, and the second magnetically-shielded ring 5 are all non-conductive magnetic materials.
  • the non-magnetic material may be stainless steel or the like, and those skilled in the art may select according to requirements, which is not specifically limited herein.
  • the first magnetically conductive ring 2 and the second magnetically conductive ring 3 both have a circular ring structure, and the inner surface is provided with pole teeth and coggings.
  • the number of teeth is 2 to 10, the width of the polar teeth is greater than 0.3mm, and the width of the cogging is greater than 0.5mm.
  • a gap between the pole teeth of the first magnetically conductive ring 2 and the second magnetically conductive ring 3 and the measuring probe 9 is 0.1 to 0.2 mm.
  • the measurement probe 9, the first magnetically permeable ring 2, and the second magnetically permeable ring 3 are all magnetically permeable materials.
  • the magnetically permeable material may be electric pure iron or the like, and those skilled in the art may select according to requirements, which is not limited herein.
  • connections between the parts that make up the system are as follows:
  • the first seal ring 7 is installed in a groove on the outer circumference of the first magnetic ring 2 to form a first magnetic ring 2 with a seal ring
  • the second seal ring 8 is installed in a groove on the outer circumference of the second magnetic ring 3.
  • a second magnetically conductive ring 3 with a sealing ring is formed; the second magnetically isolated ring 5 is housed in the housing 1, and the plane of the second magnetically isolated ring 5 is abutted with the upper plane of the bottom of the housing 1; The second magnetically permeable ring 3 is installed in the housing 1, and the plane of the second magnetically permeable ring 3 with the sealing ring is attached to the upper plane of the second magnetically isolated ring 5; the annular permanent magnet 6 is installed in the housing 1.
  • the plane of the ring-shaped permanent magnet 6 is in close contact with the upper plane of the second magnetically permeable ring 3; the first magnetically permeable ring 2 with a sealing ring is installed in the housing 1, The plane is bonded to the upper plane of the ring-shaped permanent magnet 6; the first magnetic barrier ring 4 is installed in the housing 1, and the plane of the first magnetic barrier ring 4 is bonded to the upper plane of the first magnetically permeable ring 2 with a sealing ring.
  • the assembly of the sample stage is completed; when the measurement is performed, the magnetic liquid to be measured is injected into the inner ring of the ring-shaped permanent magnet 6; Connection, end caps 10
  • the lower plane is aligned with the upper plane of the first magnetically-shielded ring 4; the measuring probe 9 extends through the center hole of the end cover 10 into the housing 1, and the position of the lower plane of the measuring probe 9 exceeds the position of the second magnetically-conductive ring 3.
  • the lower plane does not touch the upper plane at the bottom of the casing 1.
  • first sealing ring 7 and the second sealing ring 8 may be made of rubber materials, and those skilled in the art may select according to requirements, which is not limited herein.
  • the rotational rheometer measurement system using the rheological properties of the magnetic liquid according to the embodiment of the present invention is performed according to the actual structure of the magnetic liquid seal.
  • the design solves the difficulty of inferring the rheological properties of magnetic liquids under actual working conditions caused by the problems of small sealing gaps (about 0.1mm), high magnetic field strength, and unknown distribution of magnetic liquids. According to the test results, the purpose of directly reflecting the rheological properties of the magnetic liquid in the sealing gap in the magnetic liquid sealing structure is achieved.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "a plurality” is at least two, for example, two, three, etc., unless it is specifically and specifically defined otherwise.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
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  • General Health & Medical Sciences (AREA)
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Abstract

一种适用磁性液体流变特性的旋转流变特性的旋转流变仪测量系统（100），包括：壳体（1），设置于壳体（1）内的第一导磁环（2）；设置于壳体（1）内的第二导磁环（3）；设置于壳体（1）内的第一隔磁环（4）；设置于壳体（1）内的第二隔磁环（5）；以及设置于壳体（1）内的环形永磁体（6）。该测量系统（100）的结构依据磁性液体密封的实际结构进行设计，与实际密封结构非常相似，其测量结果可以直接反映磁性液体密封结构中密封间隙内磁性液体的流变学特性。

Description

适用磁性液体流变特性的旋转流变仪测量系统 技术领域
本发明涉及测量系统技术领域，特别涉及一种适用磁性液体流变特性的旋转流变仪测量系统。
背景技术
流变仪是测量材料流变学特性的重要工具，其测量系统的设计对于测量的精度和可靠性有着重要的影响。
相关的流变仪大多是针对科学研究的需求，采用的测量系统通常对应的是某种理论模型，如平行板测量系统、锥板测量系统、平行圆筒测量系统等，测量的是材料的特性。但是在实际的工程应用中，一方面很难获知材料在实际工况下所处环境的准确参数，另一方面材料所处的环境并不完全符合理论模型中的各种理想假设，因此根据传统的流变仪测量系统测量出的材料流变学特性并不能够直接推断出材料在应用中表现出来的流变学特性。磁性液体是一种纳米级的磁性功能材料。磁性液体密封是磁性液体最为成熟的应用之一，广泛应用于精密机械、气体密封、真空密封、压力密封、旋转密封等中。磁性液体密封件间隙中磁性液体的流变学特性对于磁性液体密封耐压能力，密封是否失效，磁性液体密封件阻力矩的大小都有着重要的影响。
然而在研究过程中，由于磁性液体密封件存在密封间隙小(约为0.1mm)、磁场强度大、磁性液体分布情况未知等问题，很难根据通常的流变仪测量系统测量的材料性质推断出磁性液体密封件在实际工作条件下的磁性液体的流变学性质。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本发明的目的在于提出一种适用磁性液体流变特性的旋转流变仪测量系统，该系统依据磁性液体密封的实际结构进行设计，与实际密封结构非常相似，其测量结果可以直接反映磁性液体密封结构中密封间隙内磁性液体的流变学特性。
为达到上述目的，本发明一方面实施例提出了一种适用磁性液体流变特性的旋转流变仪测量系统，包括：壳体；设置于所述壳体内的第一导磁环，所述第一导磁环外圆周的凹槽内安装有第一密封圈，以形成带密封圈的第一导磁环；设置于所述壳体内的第二导磁环，所述第二导磁环外圆周的凹槽内安装有第二密封圈，以形成带密封圈的第二导磁环；设置 于所述壳体内的第一隔磁环，所述第一隔磁环的平面与所述第一导磁环的上平面贴合；设置于所述壳体内的第二隔磁环，所述第二隔磁环的平面与所述壳体底部的上平面贴合，其中，所述第二导磁环的平面与所述第二隔磁环的上平面贴合；以及设置于所述壳体内的环形永磁体，所述环形永磁体的平面与所述第二导磁环的上平面贴合，其中，所述第一导磁环的平面与所述环形永磁体的上平面贴合，以在待测磁性液体注入到所述环形永磁体内圈时，将测量探头伸入到所述壳体中，且所述测量探头的下平面的位置超出所述第二导磁环的下平面，且不接触所述壳体底部的上平面。
本发明实施例的用磁性液体流变特性的旋转流变仪测量系统，通过依据磁性液体密封的实际结构进行设计，解决了因磁性液体密封件存在密封间隙小(约为0.1mm)、磁场强度大、磁性液体分布情况未知等问题所造成的难以推断实际工作条件下的磁性液体的流变学性质的困难，实现了根据其测试结果就可以直接反映磁性液体密封结构中密封间隙内磁性液体的流变学特性的目的。
另外，根据本发明上述实施例的适用磁性液体流变特性的旋转流变仪测量系统还可以具有以下附加的技术特征：
进一步地，在本发明的一个实施例中，设置于所述壳体上的端盖，所述端盖与所述壳体通过所述壳体外圆周的螺纹进行连接，且所述端盖的下平面与所述第一隔磁环的上平面贴合，其中，所述测量探头穿过所述端盖的中心孔伸入到所述壳体中。
进一步地，在本发明的一个实施例中，所述第一导磁环和所述第二导磁环均为圆环形结构，且内表面设置有极齿和齿槽，每个导磁环的极齿个数为2至10个，极齿宽度大于0.3mm，齿槽宽度大于0.5mm。
进一步地，在本发明的一个实施例中，所述第一导磁环和所述第二导磁环的极齿与所述测量探头之间的间隙为0.1～0.2mm。
进一步地，在本发明的一个实施例中，所述测量探头、所述第一导磁环与所述第二导磁环均为导磁性材料。
进一步地，在本发明的一个实施例中，所述壳体、所述第一隔磁环与所述第二隔磁环均为非导磁性材料。
本发明附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：
图1为根据本发明一个实施例的适用磁性液体流变特性的旋转流变仪测量系统的结构 示意图。
附图标记说明：
适用磁性液体流变特性的旋转流变仪测量系统100、壳体1、第一导磁环2、第二导磁环3、第一隔磁环4、第二隔磁环5、环形永磁体6、第一密封圈7、第二密封圈8、测量探头9和端盖10。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下面参照附图描述根据本发明实施例提出的适用磁性液体流变特性的旋转流变仪测量系统进行描述。
图1是本发明一个实施例的适用磁性液体流变特性的旋转流变仪测量系统的结构示意图。
如图1所示，该适用磁性液体流变特性的旋转流变仪测量系统100包括：壳体1、第一导磁环2、第二导磁环3、第一隔磁环4、第二隔磁环5和环形永磁体6、第一密封圈7、第二密封圈8、测量探头9和端盖10。
其中，壳体1。第一导磁环2设置于壳体内，第一导磁环2外圆周的凹槽内安装有第一密封圈7，以形成带密封圈的第一导磁环2。第二导磁环3设置于壳体内，第二导磁环3外圆周的凹槽内安装有第二密封圈8，以形成带密封圈的第二导磁环3。第一隔磁环4设置于壳体内，第一隔磁环4的平面与所述第一导磁环2的上平面贴合。第二隔磁环5设置于壳体内，第二隔磁环5的平面与壳体1底部的上平面贴合，其中，第二导磁环3的平面与第二隔磁环5的上平面贴合。环形永磁体6设置于壳体内，环形永磁体6的平面与第二导磁环3的上平面贴合，其中，第一导磁环2的平面与环形永磁体6的上平面贴合，以在待测磁性液体注入到环形永磁体6内圈时，将测量探头9伸入到壳体1中，且测量探头9的下平面的位置超出第二导磁环3的下平面，且不接触壳体1底部的上平面。本发明实施例的系统100依据磁性液体密封的实际结构进行设计，与实际密封结构非常相似，其测量结果可以直接反映磁性液体密封结构中密封间隙内磁性液体的流变学特性。
进一步地，在本发明的一个实施例中，本发明实施的系统100还包括：端盖10。其中，端盖10设置于壳体1上，端盖10与壳体1通过壳体外圆周的螺纹进行连接，且端盖10的下平面与第一隔磁环4的上平面贴合，其中，测量探头9穿过端盖10的中心孔伸入到壳体1中。
需要说明的是，测量探头9伸入壳体1时，注在环形永磁体6内圈上的磁性液体会重 新分布，填充在测量探头9与第一导磁环2、第二导磁环3极齿之间的间隙中。另外，环形永磁体6的材料可以选用铁磁质，比如铷铁硼，在此不做具体限定，其上端面为N(S)极，下端面为S(N)极；环形永磁体6的磁力线通过第一导磁环2、第二导磁环3以及测量探头9形成回路；其中，磁性液体的种类要根据本领域技术人员测试要求进行选定，此处不做限定。
进一步地，在本发明的一个实施例中，壳体1、第一隔磁环与4第二隔磁环5均为非导磁性材料。其中，非导磁性材料可以为不锈钢等，本领域技术人员可根据需要进行选择，此处不做具体限定。
进一步地，在本发明的一个实施例中，第一导磁环2和第二导磁环3均为圆环形结构，且内表面设置有极齿和齿槽，每个导磁环的极齿个数为2至10个，极齿宽度大于0.3mm，齿槽宽度大于0.5mm。
进一步地，在本发明的一个实施例中，第一导磁环2和第二导磁环3的极齿与测量探头9之间的间隙为0.1～0.2mm。
进一步地，在本发明的一个实施例中，测量探头9、第一导磁环2与第二导磁环3均为导磁性材料。其中，导磁性材料可以为电工纯铁等，本领域技术人员可根据需要进行选择，此处不做限定。
具体而言，构成该系统的各部分之间的连接如下：
第一密封圈7安装在第一导磁环2外圆周的凹槽内，形成带密封圈的第一导磁环2，第二密封圈8安装在第二导磁环3外圆周的凹槽内，形成带密封圈的第二导磁环3；第二隔磁环5装入壳体1内，第二隔磁环5的平面与壳体1底部的上平面贴合；带有密封圈的第二导磁环3装入壳体1内，带有密封圈的第二导磁环3的平面与第二隔磁环5的上平面贴合；环形永磁体6装入壳体1内，环形永磁体6的平面与第二导磁环3的上平面贴合；带有密封圈的第一导磁环2装入壳体1内，带有密封圈的第一导磁环2的平面与环形永磁体6的上平面贴合；第一隔磁环4装入壳体1内，第一隔磁环4的平面与带有密封圈的第一导磁环2的上平面贴合，至此，样品台的装配完成；进行测量时，将待测磁性液体注入到环形永磁体6内圈；端盖10安装在壳体1上，与壳体1通过壳体1外圆周的螺纹进行连接，端盖10下平面与第一隔磁环4的上平面贴合；测量探头9穿过端盖10的中心孔伸入到壳体1中，测量探头9的下平面的位置超出第二导磁环3的下平面，不接触壳体1底部的上平面。
需要说明的是，第一密封圈7、第二密封圈8可以为橡胶材料，本领域技术人员可根据需要进行选择，此处不做限定。
根据本发明实施例提出的适用磁性液体流变特性的旋转流变仪测量系统，通过本发明 实施例的用磁性液体流变特性的旋转流变仪测量系统，通过依据磁性液体密封的实际结构进行设计，解决了因磁性液体密封件存在密封间隙小(约为0.1mm)、磁场强度大、磁性液体分布情况未知等问题所造成的难以推断实际工作条件下的磁性液体的流变学性质的困难，实现了根据其测试结果就可以直接反映磁性液体密封结构中密封间隙内磁性液体的流变学特性的目的。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (6)

  1. 一种适用磁性液体流变特性的旋转流变仪测量系统，其特征在于，包括：
    壳体；
    设置于所述壳体内的第一导磁环，所述第一导磁环外圆周的凹槽内安装有第一密封圈，以形成带密封圈的第一导磁环；
    设置于所述壳体内的第二导磁环，所述第二导磁环外圆周的凹槽内安装有第二密封圈，以形成带密封圈的第二导磁环；
    设置于所述壳体内的第一隔磁环，所述第一隔磁环的平面与所述第一导磁环的上平面贴合；
    设置于所述壳体内的第二隔磁环，所述第二隔磁环的平面与所述壳体底部的上平面贴合，其中，所述第二导磁环的平面与所述第二隔磁环的上平面贴合；以及
    设置于所述壳体内的环形永磁体，所述环形永磁体的平面与所述第二导磁环的上平面贴合，其中，所述第一导磁环的平面与所述环形永磁体的上平面贴合，以在待测磁性液体注入到所述环形永磁体内圈时，将测量探头伸入到所述壳体中，且所述测量探头的下平面的位置超出所述第二导磁环的下平面，且不接触所述壳体底部的上平面。
  2. 根据权利要求1所述的适用磁性液体流变特性的旋转流变仪测量系统，其特征在于，还包括：
    设置于所述壳体上的端盖，所述端盖与所述壳体通过所述壳体外圆周的螺纹进行连接，且所述端盖的下平面与所述第一隔磁环的上平面贴合，其中，所述测量探头穿过所述端盖的中心孔伸入到所述壳体中。
  3. 根据权利要求1所述的适用磁性液体流变特性的旋转流变仪测量系统，其特征在于，所述第一导磁环和所述第二导磁环均为圆环形结构，且内表面设置有极齿和齿槽，每个导磁环的极齿个数为2至10个，极齿宽度大于0.3mm，齿槽宽度大于0.5mm。
  4. 根据权利要求2所述的适用磁性液体流变特性的旋转流变仪测量系统，其特征在于，所述第一导磁环和所述第二导磁环的极齿与所述测量探头之间的间隙为0.1～0.2mm。
  5. 根据权利要求1所述的适用磁性液体流变特性的旋转流变仪测量系统，其特征在于，所述测量探头、所述第一导磁环与所述第二导磁环均为导磁性材料。
  6. 根据权利要求1所述的适用磁性液体流变特性的旋转流变仪测量系统，其特征在于，所述壳体、所述第一隔磁环与所述第二隔磁环均为非导磁性材料。
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