WO2020154912A1 - 适用于高转速工况的磁性液体旋转密封装置 - Google Patents

适用于高转速工况的磁性液体旋转密封装置 Download PDF

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Publication number
WO2020154912A1
WO2020154912A1 PCT/CN2019/073749 CN2019073749W WO2020154912A1 WO 2020154912 A1 WO2020154912 A1 WO 2020154912A1 CN 2019073749 W CN2019073749 W CN 2019073749W WO 2020154912 A1 WO2020154912 A1 WO 2020154912A1
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Prior art keywords
pole shoe
sleeve
sealing ring
pole
sealing
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PCT/CN2019/073749
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English (en)
French (fr)
Inventor
李德才
杨纪显
李钲皓
刘霄
孙睿
李倩
陈思宇
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清华大学
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Application filed by 清华大学 filed Critical 清华大学
Priority to PCT/CN2019/073749 priority Critical patent/WO2020154912A1/zh
Publication of WO2020154912A1 publication Critical patent/WO2020154912A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force

Definitions

  • the invention relates to the technical field of mechanical engineering seals, in particular to a magnetic liquid rotary seal device suitable for high-speed working conditions.
  • Magnetic fluid is a new type of nano-functional material, and magnetic fluid seals are widely used because of its zero leakage, long life, low friction and other advantages.
  • the increase of the centrifugal force of the magnetic liquid easily causes the magnetic liquid seal to fail.
  • magnetic fluid sealing has always been a problem under high-speed working conditions.
  • the typical structure of the existing magnetic liquid rotary sealing device is mostly similar to a magnetic liquid sealing device of a poleless shoe, but when the device is used under high speed conditions, the magnetic liquid is subjected to excessive centrifugal force, which often leads to seal failure.
  • the related technology also includes: (1) A device combining centrifugal seal and magnetic liquid seal, but the device has a complicated structure and is too sensitive to the thermal elongation of the shaft. (2) A magnetic fluid sealing device based on the principle of centrifugal sealing is added to the typical sealing structure.
  • the magnetic liquid rotary seal structure is subjected to excessive centrifugal force under high-speed operating conditions, which reduces the pressure resistance of the seal and even the seal fails, which needs to be solved.
  • the present invention aims to solve one of the technical problems in the related art at least to a certain extent.
  • the purpose of the present invention is to provide a magnetic liquid rotary sealing device suitable for high-speed working conditions, which effectively solves the problem of insufficient pressure resistance of the existing magnetic liquid sealing structure at high speed.
  • an embodiment of the present invention proposes a magnetic-liquid rotary sealing device suitable for high-speed operating conditions, including: a first pole shoe assembly, the first pole shoe assembly including a first left pole with a sealing ring Shoe, first right pole shoe with two sealing rings, first right sleeve pole shoe with sealing ring, and first middle filling pole shoe, wherein the first middle filling pole shoe and two belts
  • the first right pole piece of the sealing ring, the first right sleeve pole piece with the sealing ring and the first left pole piece with the sealing ring, and the gap formed by the first pole piece assembly is sealed by a magnetic liquid
  • the second pole A shoe assembly the second pole shoe assembly comprising a second left pole shoe with a sealing ring, a second right pole shoe with two sealing rings, a second right sleeve pole shoe with a sealing ring, and a second left pole shoe Sleeve, a second middle filled pole shoe and a second right pole shoe cover, wherein the second left pole shoe cover, the second left
  • the magnetic liquid rotary sealing device suitable for high-speed working conditions of the embodiment of the present invention relies on the axial magnetic liquid sealing component to play a sealing role.
  • the newly designed pole shoe structure can prevent the magnetic liquid from passing through centrifugal force. Large and large liquid film damage occurs, and the influence of the increase of centrifugal force on the magnetic liquid film at the sealing gap is weakened, thereby effectively solving the problem of insufficient pressure resistance of the existing magnetic liquid sealing structure at high speed.
  • magnetic liquid rotary seal device suitable for high-speed operating conditions may also have the following additional technical features:
  • it further includes: a rotating shaft, a permanent magnet, a housing, a sleeve, a circlip, and a lock nut, wherein the permanent magnet is installed in the housing, and the sleeve The cylinder is sleeved on the rotating shaft, and the elastic retaining ring and the lock nut are sequentially installed on the shaft.
  • the first left pole shoe with a seal ring includes a first left pole shoe seal ring and a first left pole shoe, wherein the first left pole shoe seals
  • the ring is installed in the groove in the first left pole shoe to form the first left pole shoe with sealing ring
  • the first right pole shoe with two sealing rings includes a first left sleeve pole shoe, a first The first right pole shoe seal ring, the first right pole shoe seal ring two and the first right pole shoe, wherein the first left sleeve pole shoe is installed on one side of the rotating shaft, and the first right pole shoe seal ring 1.
  • the first right pole shoe sealing ring two is respectively installed in the first groove and the second groove of the first right pole shoe to form the first right pole shoe with two sealing rings;
  • the first right The sleeve pole piece includes a first inter-sleeve seal ring and a first right sleeve pole piece, wherein the first inter-sleeve seal ring is installed in the groove of the first right sleeve pole piece to form the belt seal ring The first right sleeve pole shoe.
  • the first pole shoe assembly further includes: a first housing sealing ring, the first housing sealing ring is installed in the first groove of the housing;
  • the pole shoe cover and the first left pole shoe, the first left pole shoe cover and the first left pole shoe are connected by threads, and are placed on the leftmost side of the housing;
  • the first pole shoe assembly is also It includes: a first housing sealing ring, the first housing sealing ring is installed in the first groove of the housing; a first left pole shoe cover and a first left pole shoe, the first left pole shoe is screwed
  • the sleeve is connected with the first left pole shoe and placed on the leftmost side of the shell.
  • the second left pole shoe with a sealing ring includes a second left pole shoe sealing ring and a second left pole shoe, wherein the second left pole shoe is sealed
  • the ring is installed in the groove in the second left pole shoe to form the second left pole shoe with sealing ring
  • the second right pole shoe with two sealing rings includes a second right pole shoe sealing ring 1.
  • the second right pole shoe seal ring two and the second right pole shoe wherein the second right pole shoe seal ring one and the second right pole shoe seal ring two are respectively mounted on the second right pole shoe In the first groove and the second groove, the second right pole piece with two sealing rings is formed; the second right sleeve pole piece includes the second inter-sleeve sealing ring and the second right sleeve pole The shoe, wherein the second inter-sleeve sealing ring is installed in the groove of the second right sleeve pole piece to form the second right sleeve pole piece with the seal ring.
  • the first left pole shoe cover, the second left pole shoe cover, the first left pole shoe, the second left pole shoe, the The first middle filled pole shoe and the second middle filled pole shoe constitute a first arc
  • the first right pole shoe cover, the second right pole shoe cover, the first right pole shoe, the first Two right pole shoes, the first middle filled pole shoes and the second middle filled pole shoes constitute a second arc
  • the tip of the first left sleeve pole shoe and the second left sleeve pole shoe There is a preset gap between the tip and the first arc, and between the tip of the first right sleeve pole piece and the tip of the second right sleeve pole piece and the second arc , And the gaps are all filled with the magnetic liquid.
  • the preset gap is 0.1 mm.
  • the first left pole shoe cover, the second left pole shoe cover, the first left pole shoe, the second left pole shoe, the first Middle filled pole shoe, said second middle filled pole shoe, said first right pole shoe cover, said second right pole shoe cover, said first right pole shoe, said second right pole shoe, said Both the first left sleeve pole piece and the second left sleeve pole piece are made of magnetically conductive materials.
  • the permanent magnet is neodymium iron boron.
  • the housing is made of a non-magnetic material.
  • it further includes: a second housing sealing ring, the second housing sealing ring is inserted into the second groove of the housing to form an end cover with a sealing ring.
  • Fig. 1 is a schematic structural diagram of a magnetic liquid rotary sealing device suitable for high-speed operating conditions according to an embodiment of the present invention
  • Figure 2 is an enlarged view of part A filled with magnetic liquid in Figure 1 according to an embodiment of the present invention
  • Fig. 3 is an enlarged view of part A in Fig. 1 where no magnetic liquid is filled according to an embodiment of the present invention.
  • Magnetic-liquid rotary sealing device 100 suitable for high-speed working conditions, rotary shaft 1, first left sleeve pole shoe 2-1, first right sleeve pole shoe 3-1, first left pole shoe sleeve 4-1, The first middle filled pole shoe 5-1, the first left pole shoe sealing ring 6-1, the first right pole shoe sealing ring one 7-1, the first right pole shoe sealing ring two 8-1, the first right pole shoe Sleeve 9-1, first housing sealing ring 10-1, first left pole piece 11-1, first right pole piece 12-1, second left sleeve pole piece 2-2, second right sleeve pole piece 3-2, the second left pole shoe cover 4-2, the second middle filled pole shoe 5-2, the second left pole shoe sealing ring 6-2, the second right pole shoe sealing ring 7-2, the second right Pole shoe sealing ring two 8-2, second right pole shoe cover 9-2, second housing sealing ring 10-2, second left pole shoe 11-2, second right pole shoe 12-2, permanent magnet 13, Adjusting washer 14, end cover 15, lock nut 16, elastic retaining ring 17, first
  • Fig. 1 is a schematic structural diagram of a magnetic liquid rotary sealing device suitable for high-speed operating conditions according to an embodiment of the present invention.
  • the magnetic-liquid rotary sealing device 100 suitable for high-speed working conditions includes: a first pole shoe assembly, a second pole shoe assembly, an adjusting gasket and an end cover with a sealing ring.
  • the first pole shoe assembly includes a first left pole shoe with a sealing ring, a first right pole shoe with two sealing rings, a first right sleeve pole shoe with a sealing ring and a first middle filling pole shoe, wherein , Put in the first middle filling pole shoe, the first right pole shoe with two sealing rings, the first right sleeve pole shoe with sealing ring and the first left pole shoe with sealing ring in sequence, and seal them by magnetic liquid The gap formed by the first pole piece assembly.
  • the second pole shoe assembly includes a second left pole shoe with a sealing ring, a second right pole shoe with two sealing rings, a second right shaft sleeve pole shoe with a sealing ring, a second left pole shoe cover, and a second middle part Filled pole shoe and second right pole shoe cover, in which, put the second left pole shoe cover, the second left pole shoe with sealing ring, the second left shaft sleeve pole shoe, the second middle filled pole shoe, and the two belts in sequence.
  • a second right pole shoe with a seal ring, a second right shaft sleeve pole shoe with a seal ring, and a second right pole shoe cover, and the second left pole shoe cover and the second left pole with a seal ring are respectively fixed by threaded connection
  • the shoe, the second right pole shoe with two sealing rings and the second right pole shoe cover, and the gap formed by the second pole shoe assembly is sealed by magnetic liquid.
  • Adjust the gasket and the end cap with sealing ring put the adjusting gasket and the end cap with sealing ring in sequence, and use the thread to connect.
  • the device of the embodiment of the present invention can weaken the influence of the increase of centrifugal force on the magnetic liquid film at the sealing gap under high-speed operating conditions, thereby effectively solving the problem of insufficient pressure resistance of the existing magnetic liquid sealing structure at high speed problem.
  • a magnetic liquid sealing device 100 suitable for high rotation speed includes: a rotary shaft 1, a first left sleeve pole piece 2-1, a first right sleeve pole piece 3-1, and a first A left pole shoe cover 4-1, the first middle filled pole shoe 5-1, the first left pole shoe sealing ring 6-1, the first right pole shoe sealing ring 7-1, the first right pole shoe sealing ring two 8-1, the first right pole shoe cover 9-1, the first housing sealing ring 10-1, the first left pole shoe 11-1, the first right pole shoe 12-1, the second left shaft sleeve pole shoe 2- 2.
  • FIG. 2 is an enlarged view of part A in Fig. 1 (filled with magnetic liquid)
  • Fig. 3 is an enlarged view of part A in Fig. 1 (not filled with magnetic liquid).
  • the first housing sealing ring 10-1 is installed in the first groove of the housing 21, wherein the first groove is the leftmost groove in the figure.
  • the first left pole shoe sealing ring 6-1 is installed in a groove in the first left pole shoe 11-1 to form a first left pole shoe with a sealing ring.
  • the first left pole shoe cover 4-1 is connected with the first left pole shoe 11-1 through a screw connection, and is placed on the leftmost side of the housing 21.
  • the first left sleeve pole shoe 2-1 is installed on the leftmost side of the rotary shaft 1, the first right pole shoe sealing ring 7-1 and the first right pole shoe sealing ring two 8-1 are respectively installed on the first right pole In the first groove and the second groove of the shoe 12-1, a first right pole shoe with two sealing rings is formed, wherein the first groove and the second groove of the first right pole shoe 12-1 are These are the left and right grooves of the first right pole shoe 12-1 shown in the figure.
  • the first sleeve sealing ring 18-1 is installed in the groove of the first right sleeve pole piece 3-1 to form a first right sleeve pole piece with a sealing ring.
  • the first right pole shoe with two sealing rings the first right shaft sleeve pole shoe with sealing ring, and the first right shaft sleeve pole shoe with sealing ring in turn.
  • the first right pole shoe 12-1 and the first right pole shoe cover 9-1 are screwed and fixed. Magnetic fluid 19 is injected into the two sealed gaps formed on the left side of Figure 1.
  • the permanent magnet 13 is installed in the housing 21 and the sleeve 20 is sleeved on the rotating shaft 1.
  • the second left pole shoe sealing ring 6-2 is installed in the groove in the second left pole shoe 11-2 to form a second left pole shoe with a sealing ring.
  • the second right pole shoe seal ring 7-2 and the second right pole shoe seal ring two 8-2 are respectively installed in the first groove and the second groove of the second right pole shoe 12-2 to form two belts
  • the second right pole piece of the sealing ring, wherein the first groove and the second groove of the second right pole piece 12-2 are the left and right grooves of the second right pole piece 12-2.
  • the second sleeve sealing ring 18-2 is installed in the groove of the second right sleeve pole piece 3-2 to form a second right sleeve pole piece with a sealing ring.
  • the second left pole shoe cover 4-2 the second left pole shoe with sealing ring, the second left shaft sleeve pole shoe 2-2, the second middle filled pole shoe 5-2, the one with two sealing rings
  • the second right pole shoe, the second right shaft sleeve pole shoe with sealing ring, the second right pole shoe sleeve 9-2, and the second left pole shoe sleeve 4-2 and the second left sleeve with sealing ring are fixed by screw connection.
  • the pole shoe; and the second right pole shoe with two sealing rings and the second right pole shoe cover 9-2 are fixed by thread connection. .
  • the magnetic liquid 19 is injected into the two sealed gaps formed on the right side of FIG. 1;
  • the elastic retaining ring 17, the lock nut 16 are installed on the shaft in turn; the second housing sealing ring 10-2 is inserted into the groove of the housing 21 to form an end cover with a sealing ring; the adjusting gasket 14 and the sealing ring are placed in sequence The end cap of the ring is connected by thread to complete the positioning and installation of the magnetic liquid sealing device.
  • the first left pole shoe cover, the second left pole shoe cover, the first left pole shoe, the second left pole shoe, the first middle filled pole shoe, and the second middle filled pole forms a first arc;
  • the first right pole shoe cover, the second right pole shoe cover, the first right pole shoe, the second right pole shoe, the first middle filled pole shoe, and the second middle filled pole shoe form a second arc Surface; between the tip of the first left sleeve pole piece and the tip of the second left sleeve pole piece and the first arc, and the tip of the first right sleeve pole piece and the tip of the second right sleeve pole piece and
  • the preset gap may be 0.1 mm. Of course, those skilled in the art may also set the width of the gap according to actual conditions, which is not specifically limited here.
  • all the left pole shoe covers, all the left pole shoes, and all the middle-filled pole shoes in the above-mentioned embodiments constitute a curved surface
  • all the right pole shoe covers, all the right pole shoes, and all the middle-filled pole shoes constitute a curved surface.
  • the minimum distance between the tip of all left sleeve pole shoes and all right sleeve pole shoes and the arc surface is 0.1mm, which is filled with magnetic liquid 19.
  • left sleeve pole shoes, right sleeve pole shoes, left pole shoe covers, middle filled pole shoes, right pole shoe covers, left pole shoes, and right pole shoes can be made of materials with good magnetic permeability , For example, 2Cr13, electrical pure iron, etc.
  • the permanent magnet 13 neodymium iron boron or the like can be used.
  • the housing 21 can be made of a non-magnetic material, such as 316L stainless steel.
  • the type of the magnetic liquid 18 is selected according to the use environment and the sealing medium, and the magnetic liquid with different base carrier liquids is selected, which is not specifically limited here.
  • the magnetic liquid rotary sealing device suitable for high-speed working conditions relies on the axial magnetic liquid sealing component to play a sealing role.
  • the newly designed pole shoe structure can prevent magnetic liquid
  • the liquid film damage caused by excessive centrifugal force solves the problem of insufficient pressure resistance of the existing magnetic liquid seal structure at high speeds.
  • the rotating shaft rotates at a high speed, the magnetic liquid is still affected by the huge centrifugal force. Restricted in the arc surface, filling the sealing gap, the pressure resistance will not be significantly reduced, and the sealing effect is good.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present invention, "a plurality of” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • the "on” or “under” of the first feature on the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. contact.
  • the "above”, “above” and “above” of the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

一种适用于高转速工况的磁性液体旋转密封装置，包括：回转轴（1）、第一左轴套极靴（2-1）、第一右轴套极靴（3-1）、第一左极靴套（4-1）、第一中部填充极靴（5-1）、第一右极靴套（9-1）、第一左极靴（11-1）、第一右极靴（12-1）等构成。该装置依靠轴向磁性液体密封组件起到密封作用，在高转速工况下，其极靴结构可以防止磁性液体因离心力过大而出现的液膜破坏情况，从而有效解决了现有磁性液体密封结构在高转速下的耐压能力不足的问题。

Description

适用于高转速工况的磁性液体旋转密封装置 技术领域
本发明涉及机械工程密封技术领域，特别涉及一种适用于高转速工况的磁性液体旋转密封装置。
背景技术
磁性液体是一种新型纳米功能材料，磁性液体密封因其具有零泄漏、长寿命、低摩擦等优点得到广泛应用。但是在高转速情况下，磁性液体受离心力作用增大容易导致磁性液体密封失效。在国际上，高转速工况下磁性液体密封一直是一个难题。
现有的磁性液体旋转密封装置典型结构多类似一种无极靴的磁性液体密封装置，但该装置在高转速条件下使用时，因为磁性液体所受离心力过大，经常会导致密封失效。另外，相关技术还包括：(1)一种结合离心密封与磁性液体密封的装置，但是该装置结构复杂，且对于轴的热伸长过于敏感。(2)在典型密封结构的基础上附加了一个基于离心密封原理的磁性液体密封装置。
然而，相关技术中磁性液体旋转密封结构在高转速工况下，磁性液体受离心力过大，使得密封件耐压能力降低甚至密封失效，有待解决。
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于高转速工况的磁性液体旋转密封装置，该装置有效解决了现有磁性液体密封结构在高转速下的耐压能力不足的问题。
为达到上述目的，本发明实施例提出了一种适用于高转速工况的磁性液体旋转密封装置，包括：第一极靴组件，所述第一极靴组件包括带密封圈的第一左极靴、带两个密封圈的第一右极靴、带密封圈的第一右轴套极靴和第一中部填充极靴，其中，依次放入所述第一中部填充极靴、带两个密封圈的第一右极靴、带密封圈的第一右轴套极靴和带密封圈的第一左极靴，并通过磁性液体密封所述第一极靴组件形成的间隙；第二极靴组件，所述第二极靴组件包括带密封圈的第二左极靴、带两个密封圈的第二右极靴、带密封圈的第二右轴套极靴、第二左极靴套、第二中部填充极靴和第二右极靴套，其中，依次放入所述第二左极靴套、所述带密封圈的第二左极靴、所述第二左轴套极靴、所述第二中部填充极靴、所述带两个密封圈的第二右极靴、所述带密封圈的第二右轴套极靴和所述第二右极靴套，且分别使用螺纹连接固定所述第二左极靴套与所述带密封圈的第二左极靴、所述带两个密封圈的第二右极靴与所述第二右极靴套，并通过所述磁性液体密封所述第二极靴组件形成 的间隙；调整垫片和带密封圈的端盖，依次放入所述调整垫片和所述带密封圈的端盖，并使用螺纹进行连接。
本发明实施例的适用于高转速工况的磁性液体旋转密封装置，依靠轴向磁性液体密封组件起到密封作用，在高转速工况下，新设计的极靴结构可以防止磁性液体因离心力过大而出现的液膜破坏情况，并削弱离心力增大对密封间隙处的磁性液体液膜的影响，从而有效解决了现有磁性液体密封结构在高转速下的耐压能力不足的问题。
另外，根据本发明上述实施例的适用于高转速工况的磁性液体旋转密封装置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，还包括：回转轴、永磁体、外壳、套筒、弹性挡圈和锁紧螺母，其中，所述永磁体装入所述外壳内，所述套筒套在回转轴上，所述弹性挡圈和所述锁紧螺母依次安装至轴上。
进一步地，在本发明的一个实施例中，其中，所述带密封圈的第一左极靴包括第一左极靴密封圈和第一左极靴，其中，所述第一左极靴密封圈安装在所述第一左极靴中的凹槽中形成所述带密封圈的第一左极靴；带两个密封圈的第一右极靴包括第一左轴套极靴、第一右极靴密封圈一、第一右极靴密封圈二和第一右极靴，其中，所述第一左轴套极靴安装在回转轴的一侧，所述第一右极靴密封圈一、第一右极靴密封圈二分别安装在第一右极靴的第一凹槽和第二凹槽中，形成所述带两个密封圈的第一右极靴；所述第一右轴套极靴包括第一轴套间密封圈和第一右轴套极靴，其中，所述第一轴套间密封圈安装在第一右轴套极靴的凹槽中，形成所述带密封圈的第一右轴套极靴。
进一步地，在本发明的一个实施例中，所述第一极靴组件还包括：第一外壳密封圈，所述第一外壳密封圈安装在所述外壳的第一凹槽中；第一左极靴套和第一左极靴，通过螺纹将所述第一左极靴套与第一左极靴进行连接，并放入在所述外壳的最左侧；所述第一极靴组件还包括：第一外壳密封圈，所述第一外壳密封圈安装在所述外壳的第一凹槽中；第一左极靴套和第一左极靴，通过螺纹将所述第一左极靴套与第一左极靴进行连接，并放入在所述外壳的最左侧。
进一步地，在本发明的一个实施例中，其中，所述带密封圈的第二左极靴包括第二左极靴密封圈和第二左极靴，其中，所述第二左极靴密封圈安装在所述第二左极靴中的凹槽中，形成所述带密封圈的第二左极靴；所述带两个密封圈的第二右极靴包括第二右极靴密封圈一、第二右极靴密封圈二和第二右极靴，其中，所述第二右极靴密封圈一、所述第二右极靴密封圈二分别安装在所述第二右极靴的第一凹槽和第二凹槽中，形成所述带两个密封圈的第二右极靴；所述第二右轴套极靴包括第二轴套间密封圈和第二右轴套极靴，其中，所述第二轴套间密封圈安装在所述第二右轴套极靴的凹槽中，形成所述带密封圈的第二右轴套极靴。
进一步地，在本发明的一个实施例中，其中，所述第一左极靴套、所述第二左极靴套、 所述第一左极靴、所述第二左极靴、所述第一中部填充极靴和所述第二中部填充极靴构成第一弧面；所述第一右极靴套、所述第二右极靴套、所述第一右极靴、所述第二右极靴、所述第一中部填充极靴和所述第二中部填充极靴构成第二弧面；所述第一左轴套极靴的尖端和所述第二左轴套极靴的尖端与所述第一弧面之间、以及所述第一右轴套极靴的尖端和所述第二右轴套极靴的尖端与所述第二弧面之间均留有预设间隙，且所述间隙均填充有所述磁性液体。
进一步地，在本发明的一个实施例中，所述预设间隙为0.1mm。
进一步地，在本发明的一个实施例中，所述第一左极靴套、所述第二左极靴套、所述第一左极靴、所述第二左极靴、所述第一中部填充极靴、所述第二中部填充极靴、所述第一右极靴套、所述第二右极靴套、所述第一右极靴、所述第二右极靴、所述第一左轴套极靴和所述第二左轴套极靴均使用导磁性材料制成。
进一步地，在本发明的一个实施例中，所述永磁体为钕铁硼。
进一步地，在本发明的一个实施例中，所述外壳使用非导磁材料制成。
进一步地，在本发明的一个实施例中，还包括：第二外壳密封圈，所述第二外壳密封圈装入所述外壳的第二凹槽中，形成带密封圈的端盖。
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于高转速工况的磁性液体旋转密封装置的结构示意图；
图2为根据本发明一个实施例的图1中充入磁性液体的A部位放大图；
图3为根据本发明一个实施例的图1中未充入磁性液体的A部位放大图。
附图标记说明：
适用于高转速工况的磁性液体旋转密封装置100、回转轴1、第一左轴套极靴2-1、第一右轴套极靴3-1、第一左极靴套4-1、第一中部填充极靴5-1、第一左极靴密封圈6-1、第一右极靴密封圈一7-1、第一右极靴密封圈二8-1、第一右极靴套9-1、第一外壳密封圈10-1、第一左极靴11-1、第一右极靴12-1、第二左轴套极靴2-2、第二右轴套极靴3-2、第二左极靴套4-2、第二中部填充极靴5-2、第二左极靴密封圈6-2、第二右极靴密封圈一7-2、第二右极靴密封圈二8-2、第二右极靴套9-2、第二外壳密封圈10-2、第二左极靴11-2、第二右极靴12-2、永磁体13、调整垫片14、端盖15、锁紧螺母16、弹性挡圈17、第一轴套间密封圈18-1、磁性液体19、套筒20、第二轴套间密封圈18-2、外壳21。
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于高转速工况的磁性液体旋转密封装置。
图1是本发明一个实施例的适用于高转速工况的磁性液体旋转密封装置的结构示意图。
如图1所示，该适用于高转速工况的磁性液体旋转密封装置100包括：第一极靴组件、第二极靴组件、调整垫片和带密封圈的端盖。
其中，第一极靴组件包括带密封圈的第一左极靴、带两个密封圈的第一右极靴、带密封圈的第一右轴套极靴和第一中部填充极靴，其中，依次放入第一中部填充极靴、带两个密封圈的第一右极靴、带密封圈的第一右轴套极靴和带密封圈的第一左极靴，并通过磁性液体密封第一极靴组件形成的间隙。第二极靴组件包括带密封圈的第二左极靴、带两个密封圈的第二右极靴、带密封圈的第二右轴套极靴、第二左极靴套、第二中部填充极靴和第二右极靴套，其中，依次放入第二左极靴套、带密封圈的第二左极靴、第二左轴套极靴、第二中部填充极靴、带两个密封圈的第二右极靴、带密封圈的第二右轴套极靴和第二右极靴套，且分别使用螺纹连接固定第二左极靴套与带密封圈的第二左极靴、带两个密封圈的第二右极靴与第二右极靴套，并通过磁性液体密封第二极靴组件形成的间隙。调整垫片和带密封圈的端盖，依次放入调整垫片和带密封圈的端盖，并使用螺纹进行连接。本发明实施例的装置可以在高转速工况下，削弱离心力增大对密封间隙处的磁性液体液膜的影响，从而有效解决了现有磁性液体密封结构在高转速下的耐压能力不足的问题。
具体而言，如图1所示，适用于高转速的磁性液体密封装置100，包括：回转轴1、第一左轴套极靴2-1、第一右轴套极靴3-1、第一左极靴套4-1、第一中部填充极靴5-1、第一左极靴密封圈6-1、第一右极靴密封圈一7-1、第一右极靴密封圈二8-1、第一右极靴套9-1、第一外壳密封圈10-1、第一左极靴11-1、第一右极靴12-1、第二左轴套极靴2-2、第二右轴套极靴3-2、第二左极靴套4-2、第二中部填充极靴5-2、第二左极靴密封圈6-2、第二右极靴密封圈一7-2、第二右极靴密封圈二8-2、第二右极靴套9-2、第二外壳密封圈10-2、第二左极靴11-2、第二右极靴12-2、永磁体13、调整垫片14、端盖15、锁紧螺母16、弹性挡圈17、第一轴套间密封圈18-1、磁性液体19、套筒20、第二轴套间密封圈18-2和外壳21。
下面结合附图将对适用于高转速工况的磁性液体旋转密封装置100各个部分的连接进行详细说明。其中，图2为图1中A部位放大图(充入磁性液体)，图3为图1中A部位放大图(未充入磁性液体)。
如图1所示，第一外壳密封圈10-1安装在外壳21外壳的第一凹槽，其中，第一凹槽为图中最左侧的凹槽中。第一左极靴密封圈6-1安装在第一左极靴11-1中的凹槽中，形成带密封圈的第一左极靴。通过螺纹连接将第一左极靴套4-1与第一左极靴11-1连接，并放入在外壳21的最左侧。第一左轴套极靴2-1安装在回转轴1的最左侧，第一右极靴密封圈一7-1、第一右极靴密封圈二8-1分别安装在第一右极靴12-1的第一凹槽和第二凹槽中，形成带两个密封圈的第一右极靴，其中，第一右极靴12-1的第一凹槽和第二凹槽即为图中所示第一右极靴12-1的左右两个凹槽。第一轴套间密封圈18-1安装在第一右轴套极靴3-1的凹槽中，形成带密封圈的第一右轴套极靴。依次放入第一中部填充极靴5-1、带两个密封圈的第一右极靴、带密封圈的第一右轴套极靴、带密封圈的第一右轴套极靴，使用螺纹连接固定第一右极靴12-1与第一右极靴套9-1。磁性液体19注入图1左侧形成的两个密封间隙中.
永磁体13装入外壳21内，套筒20套在回转轴1上。第二左极靴密封圈6-2安装在第二左极靴11-2中的凹槽中，形成带密封圈的第二左极靴。第二右极靴密封圈一7-2、第二右极靴密封圈二8-2分别安装在第二右极靴12-2的第一凹槽和第二凹槽中，形成带两个密封圈的第二右极靴，其中，第二右极靴12-2的第一凹槽和第二凹槽即为第二右极靴12-2的左右两个凹槽。第二轴套间密封圈18-2安装在第二右轴套极靴3-2的凹槽中，形成带密封圈的第二右轴套极靴。依次放入第二左极靴套4-2、带密封圈的第二左极靴、第二左轴套极靴2-2、第二中部填充极靴5-2、带两个密封圈的第二右极靴、带密封圈的第二右轴套极靴、第二右极靴套9-2，并使用螺纹连接固定第二左极靴套4-2与带密封圈的第二左极靴；且使用螺纹连接固定带两个密封圈的第二右极靴与第二右极靴套9-2。。另外，磁性液体19注入图1右侧形成的两个密封间隙中；
弹性挡圈17、锁紧螺母16依次安装至轴上；第二外壳密封圈10-2装入外壳21的凹槽中，形成带密封圈的端盖；依次放入调整垫片14、带密封圈的端盖，使用螺纹连接，完成磁性液体密封装置的定位与安装。
进一步地，在本发明的一个实施例中，第一左极靴套、第二左极靴套、第一左极靴、第二左极靴、第一中部填充极靴和第二中部填充极靴构成第一弧面；第一右极靴套、第二右极靴套、第一右极靴、第二右极靴、第一中部填充极靴和第二中部填充极靴构成第二弧面；第一左轴套极靴的尖端和第二左轴套极靴的尖端与第一弧面之间、以及第一右轴套极靴的尖端和第二右轴套极靴的尖端与第二弧面之间均留有预设间隙，且间隙均填充有磁性液体。其中，预设间隙可以为0.1mm，当然，本领域技术人员也可以根据实际情况设置间隙的宽度，在此不做具体限定。
可以理解的是，上述实施例中全部左极靴套、全部左极靴、全部中部填充极靴构成一弧面，全部右极靴套、全部右极靴、全部中部填充极靴构成一弧面，全部左轴套极靴与全部右轴套极靴尖端与弧面最小距离0.1mm，其中填充磁性液体19。当回转轴1高速旋转时， 在巨大的离心力作用下，磁性液体19仍被限制在弧面内，耐压能力不会出现明显下降，密封效果良好。
需要说明的是，全部左轴套极靴、右轴套极靴、左极靴套、中部填充极靴、右极靴套、左极靴、右极靴可以使用导磁性能良好的材料制成，比如，2Cr13、电工纯铁等。永磁体13可以使用钕铁硼等。外壳21可以使用非导磁材料制成，如316L不锈钢等。磁性液体18的种类根据使用环境和密封介质的不同选择不同基载液的磁性液体，在此不做具体限定。
根据本发明实施例提出的适用于高转速工况的磁性液体旋转密封装置，依靠轴向磁性液体密封组件起到密封作用，在高转速工况下，新设计的极靴结构可以防止磁性液体因离心力过大而出现的液膜破坏情况，解决了现有磁性液体密封结构在高转速下的耐压能力不足的问题，并当回转轴高速旋转时，在巨大的离心力作用下，磁性液体仍被限制在弧面内，填满密封间隙，耐压能力不会出现明显下降，密封效果良好。
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。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
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 (10)

  1. 一种适用于高转速工况的磁性液体旋转密封装置，其特征在于，包括：
    第一极靴组件，所述第一极靴组件包括带密封圈的第一左极靴、带两个密封圈的第一右极靴、带密封圈的第一右轴套极靴和第一中部填充极靴，其中，依次放入所述第一中部填充极靴、带两个密封圈的第一右极靴、带密封圈的第一右轴套极靴和带密封圈的第一左极靴，并通过磁性液体密封所述第一极靴组件形成的间隙；
    第二极靴组件，所述第二极靴组件包括带密封圈的第二左极靴、带两个密封圈的第二右极靴、带密封圈的第二右轴套极靴、第二左极靴套、第二中部填充极靴和第二右极靴套，其中，依次放入所述第二左极靴套、所述带密封圈的第二左极靴、所述第二左轴套极靴、所述第二中部填充极靴、所述带两个密封圈的第二右极靴、所述带密封圈的第二右轴套极靴和所述第二右极靴套，且分别使用螺纹连接固定所述第二左极靴套与所述带密封圈的第二左极靴、所述带两个密封圈的第二右极靴与所述第二右极靴套，并通过所述磁性液体密封所述第二极靴组件形成的间隙；以及
    调整垫片和带密封圈的端盖，依次放入所述调整垫片和所述带密封圈的端盖，并使用螺纹进行连接。
  2. 根据权利要求1所述的适用于高转速工况的磁性液体旋转密封装置，其特征在于，还包括：
    回转轴、永磁体、外壳、套筒、弹性挡圈和锁紧螺母，其中，所述永磁体装入所述外壳内，所述套筒套在回转轴上，所述弹性挡圈和所述锁紧螺母依次安装至轴上。
  3. 根据权利要求2所述的适用于高转速工况的磁性液体旋转密封装置，其特征在于，其中，
    所述带密封圈的第一左极靴包括第一左极靴密封圈和第一左极靴，其中，所述第一左极靴密封圈安装在所述第一左极靴中的凹槽中形成所述带密封圈的第一左极靴；
    带两个密封圈的第一右极靴包括第一左轴套极靴、第一右极靴密封圈一、第一右极靴密封圈二和第一右极靴，其中，所述第一左轴套极靴安装在回转轴的一侧，所述第一右极靴密封圈一、第一右极靴密封圈二分别安装在第一右极靴的第一凹槽和第二凹槽中，形成所述带两个密封圈的第一右极靴；
    所述第一右轴套极靴包括第一轴套间密封圈和第一右轴套极靴，其中，所述第一轴套间密封圈安装在第一右轴套极靴的凹槽中，形成所述带密封圈的第一右轴套极靴。
  4. 根据权利要求3所述的适用于高转速工况的磁性液体旋转密封装置，其特征在于，所述第一极靴组件还包括：
    第一外壳密封圈，所述第一外壳密封圈安装在所述外壳的第一凹槽中；
    第一左极靴套和第一左极靴，通过螺纹将所述第一左极靴套与第一左极靴进行连接， 并放入在所述外壳的最左侧；
    第一右极靴套，所述第一右极靴套通过螺纹与所述第一右极靴固定连接。
  5. 根据权利要求4所述的适用于高转速工况的磁性液体旋转密封装置，其特征在于，其中，
    所述带密封圈的第二左极靴包括第二左极靴密封圈和第二左极靴，其中，所述第二左极靴密封圈安装在所述第二左极靴中的凹槽中，形成所述带密封圈的第二左极靴；
    所述带两个密封圈的第二右极靴包括第二右极靴密封圈一、第二右极靴密封圈二和第二右极靴，其中，所述第二右极靴密封圈一、所述第二右极靴密封圈二分别安装在所述第二右极靴的第一凹槽和第二凹槽中，形成所述带两个密封圈的第二右极靴；
    所述第二右轴套极靴包括第二轴套间密封圈和第二右轴套极靴，其中，所述第二轴套间密封圈安装在所述第二右轴套极靴的凹槽中，形成所述带密封圈的第二右轴套极靴。
  6. 根据权利要求5所述的适用于高转速工况的磁性液体旋转密封装置，其特征在于，其中，
    所述第一左极靴套、所述第二左极靴套、所述第一左极靴、所述第二左极靴、所述第一中部填充极靴和所述第二中部填充极靴构成第一弧面；
    所述第一右极靴套、所述第二右极靴套、所述第一右极靴、所述第二右极靴、所述第一中部填充极靴和所述第二中部填充极靴构成第二弧面；
    所述第一左轴套极靴的尖端和所述第二左轴套极靴的尖端与所述第一弧面之间、以及所述第一右轴套极靴的尖端和所述第二右轴套极靴的尖端与所述第二弧面之间均留有预设间隙，且所述间隙均填充有所述磁性液体。
  7. 根据权利要求6所述的适用于高转速工况的磁性液体旋转密封装置，其特征在于，其中，所述预设间隙为0.1mm。
  8. 根据权利要求2所述的适用于高转速工况的磁性液体旋转密封装置，其特征在于，所述第一左极靴套、所述第二左极靴套、所述第一左极靴、所述第二左极靴、所述第一中部填充极靴、所述第二中部填充极靴、所述第一右极靴套、所述第二右极靴套、所述第一右极靴、所述第二右极靴、所述第一左轴套极靴和所述第二左轴套极靴均使用导磁性材料制成。
  9. 根据权利要求2所述的适用于高转速工况的磁性液体旋转密封装置，其特征在于，所述永磁体为钕铁硼，所述外壳使用非导磁材料制成。
  10. 根据权利要求2所述的适用于高转速工况的磁性液体旋转密封装置，其特征在于，还包括：
    第二外壳密封圈，所述第二外壳密封圈装入所述外壳的第二凹槽中，形成带密封圈的端盖。
PCT/CN2019/073749 2019-01-29 2019-01-29 适用于高转速工况的磁性液体旋转密封装置 WO2020154912A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54135963A (en) * 1978-04-14 1979-10-22 Fuji Electric Co Ltd Magnetic liquid seal device
SU881441A1 (ru) * 1979-12-17 1981-11-15 Институт Тепло- И Массообмена Им.А.В.Лыкова Ан Белорусской Сср Магнитно-жидкостное уплотнение
WO1996002778A1 (en) * 1994-06-13 1996-02-01 Matsson, Magnus Magnetic liquid seal
CN206386479U (zh) * 2016-12-09 2017-08-08 北京交通大学 一种适用于高线速度旋转工况的磁性液体密封装置
CN108953614A (zh) * 2018-04-16 2018-12-07 北京交通大学 一种磁性液体密封-刷式密封复合装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54135963A (en) * 1978-04-14 1979-10-22 Fuji Electric Co Ltd Magnetic liquid seal device
SU881441A1 (ru) * 1979-12-17 1981-11-15 Институт Тепло- И Массообмена Им.А.В.Лыкова Ан Белорусской Сср Магнитно-жидкостное уплотнение
WO1996002778A1 (en) * 1994-06-13 1996-02-01 Matsson, Magnus Magnetic liquid seal
CN206386479U (zh) * 2016-12-09 2017-08-08 北京交通大学 一种适用于高线速度旋转工况的磁性液体密封装置
CN108953614A (zh) * 2018-04-16 2018-12-07 北京交通大学 一种磁性液体密封-刷式密封复合装置

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