WO2020006700A1 - 适应连接处轴向和径向位移的磁性液体密封装置 - Google Patents

适应连接处轴向和径向位移的磁性液体密封装置 Download PDF

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Publication number
WO2020006700A1
WO2020006700A1 PCT/CN2018/094466 CN2018094466W WO2020006700A1 WO 2020006700 A1 WO2020006700 A1 WO 2020006700A1 CN 2018094466 W CN2018094466 W CN 2018094466W WO 2020006700 A1 WO2020006700 A1 WO 2020006700A1
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WO
WIPO (PCT)
Prior art keywords
rubber seal
ring
seal ring
magnetic
magnetic liquid
Prior art date
Application number
PCT/CN2018/094466
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English (en)
French (fr)
Inventor
李德才
陈思宇
刘霄
李倩
孙睿
杨纪显
李钲皓
Original Assignee
清华大学
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Application filed by 清华大学 filed Critical 清华大学
Priority to PCT/CN2018/094466 priority Critical patent/WO2020006700A1/zh
Priority to US16/765,206 priority patent/US11215286B2/en
Publication of WO2020006700A1 publication Critical patent/WO2020006700A1/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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/664—Retaining the liquid in or near the bearing
    • F16C33/6644—Retaining the liquid in or near the bearing by a magnetic field acting on a magnetic liquid
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6688—Lubricant compositions or properties, e.g. viscosity
    • F16C33/6692—Liquids other than oil, e.g. water, refrigerants, liquid metal
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/762—Sealings of ball or roller bearings by means of a fluid
    • F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
    • F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • F16C35/045—Housings for rolling element bearings for rotary movement with a radial flange to mount the housing
    • 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
    • F16J15/002—Sealings comprising at least two sealings in succession
    • 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
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
    • 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
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/768—Sealings of ball or roller bearings between relatively stationary parts, i.e. static seals
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/08—Rigid support of bearing units; Housings, e.g. caps, covers for spindles
    • F16C35/12—Rigid support of bearing units; Housings, e.g. caps, covers for spindles with ball or roller bearings
    • 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
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3268—Mounting of sealing rings
    • F16J15/3276—Mounting of sealing rings with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted

Definitions

  • the invention relates to the technical field of mechanical engineering seals, in particular to a magnetic liquid sealing device adapted to axial and radial displacements at a joint.
  • Magnetic liquid is a new type of functional material that has both the fluidity of liquids and the response characteristics of solid magnetic materials to magnetic fields. It has a wide range of applications in engineering. Among them, magnetic liquid sealing is one of the many applications of magnetic liquids. Magnetic liquid sealing technology has the advantages of zero leakage, no wear, long life, easy maintenance, etc. It is widely used in different sealing occasions in various industries. In the chemical industry and other fields, magnetic liquid sealing devices are often connected to structures with large diameter end caps or flanges. These end caps or flanges have larger diameters and undergo greater deformation when subjected to force or heat.
  • the part connected to the magnetic liquid sealing device will generate axial or radial displacement, causing the components of the magnetic liquid sealing device to receive a large axial force or radial force, affecting the performance in use, and shortening the magnetic liquid sealing device. Working life.
  • the present invention aims to solve at least one of the technical problems in the related technology to a certain extent.
  • the object of the present invention is to propose a magnetic liquid sealing device adapted to the axial and radial displacement of the connection, which makes the axial and radial deformation and displacement of the connecting member not loaded on the magnetic liquid basic sealing structure.
  • the service life of the magnetic liquid seal can be extended.
  • an embodiment of one aspect of the present invention proposes a magnetic liquid sealing device adapted to axial and radial displacement of a connection, including: an end cover; a first clamping plate with a rubber sealing ring, the rubber sealing ring
  • the first clamp plate is fixed on the end cover by a first screw and a second screw, wherein the first clamp plate with a rubber seal ring includes a first rubber seal ring and a first clamp plate, the first rubber seal ring Installed in the groove of the first clamping plate; the second clamping plate with a rubber sealing ring, and the second clamping plate with the rubber sealing ring is installed in the groove of the end cover, wherein the rubber sealing ring
  • the second clamping plate includes a second rubber sealing ring, a third rubber sealing ring, and a second clamping plate, and the second rubber sealing ring and the third rubber sealing ring are installed in a groove of the second clamping plate; a basic seal Structure, the basic sealing structure is fixed to the second clamp plate with the rubber seal ring
  • the magnetic liquid sealing device adapted to the axial and radial displacement of the connection is separated from the connected components and the magnetic liquid sealing structure by two splints, which overcomes the end cap or flange connected to the magnetic liquid sealing structure.
  • the axial and radial deformation or displacement of the joint caused by the axial and radial deformation of the structure, so that the axial and radial deformation and displacement of the connecting component will not be loaded on the parts in the basic sealing structure of the magnetic liquid Can extend the service life of magnetic liquid seals.
  • magnetic liquid sealing device adapted to the axial and radial displacement of the connection according to the above embodiment of the present invention may also have the following additional technical features:
  • the basic sealing structure further includes: a housing, a fourth rubber seal ring and a fifth rubber seal ring are installed in the groove of the housing; and a shaft sleeve with a seal group
  • the shaft with the seal group is sleeved into the housing, wherein the shaft with the seal group includes a right rolling bearing, a right magnetic spacer, a right pole shoe with a rubber seal, a ring-shaped permanent magnet, and a rubber seal.
  • the left pole boot, the left magnetic ring and the left rolling bearing are sequentially sleeved on the outside of the sleeve; the left end ring, the left end ring is sleeved on the outside of the sleeve with the seal group, and rotated Thread into the inner wall of the housing; a right end ring, which is sleeved on the other side of the outside of the sleeve with the seal group, and screw in a first set screw and a second set screw.
  • the right pole shoe with a rubber seal ring includes a sixth rubber seal ring and a right pole shoe, and the sixth rubber seal ring is installed on the right pole shoe.
  • the left pole shoe with the rubber seal ring includes a seventh rubber seal ring and a left pole shoe, and the seventh rubber seal ring is installed in the groove of the left pole shoe.
  • the left pole shoe and the right pole shoe are both magnetic conductive materials, and the inner walls of the left pole shoe and the right pole shoe are processed with pole teeth and teeth.
  • the number of the pole teeth of each pole shoe is 2 to 10, the width of the pole teeth is at least 0.3 mm, and the width of the tooth grooves is at least 0.5 mm.
  • a sealing gap between the left pole shoe with a rubber seal ring, the right pole shoe with a rubber seal ring, and the shaft sleeve is 0.001 to 1 mm.
  • a magnetic liquid is injected into the sealing gap to achieve dynamic sealing.
  • a material of the left magnetic ring, the right magnetic ring, and the case is a non-magnetic material.
  • FIG. 1 is a schematic structural diagram of a magnetic liquid sealing device adapted to axial and radial displacement at a connection according to an embodiment of the present invention.
  • Magnetic liquid seal 10 end cap 100, first clamp 200 with rubber seal, first screw 201, second screw 202, first rubber seal 210, first clamp 220.
  • Boot 404 seventh rubber seal 405, left pole boot 406, housing 410, fourth rubber seal 411, fifth rubber seal 412, right rolling bearing 421, right magnetic spacer 422, right pole with rubber seal Boot 423, ring-shaped permanent magnet 424, left pole boot 425 with rubber seal, left magnetic ring 426, left rolling bearing 427, bushing 428, left end ring 430, right end ring 440, first set screw 441, second tightening ⁇ screw 442.
  • FIG. 1 is a schematic structural diagram of a magnetic liquid sealing device adapted to axial and radial displacements at a connection according to an embodiment of the present invention.
  • the magnetic liquid sealing device 10 adapted to the axial and radial displacement of the connection includes: an end cap 100, a first clamp plate 200 with a rubber seal ring, a second clamp plate 300 with a rubber seal ring, and a basic seal. Structure 400 (not specifically identified in the figure).
  • the end cap 100 The first clamp plate 200 with a rubber seal ring is fixed on the end cover 100 by a first screw 201 and a second screw 202.
  • the first clamp plate 200 with a rubber seal ring includes a first rubber seal ring 210 and a first clamp plate 220.
  • the first rubber sealing ring 210 is installed in a groove of the first clamping plate 220.
  • the second clamp plate 300 with a rubber seal ring is installed in the groove of the end cover 100, wherein the second clamp plate 300 with the rubber seal ring includes a second rubber seal ring 310, a third rubber seal ring 320, and a second clamp plate 330.
  • the second rubber seal ring 310 and the third rubber seal ring 320 are installed in the groove of the second clamping plate 330.
  • the basic sealing structure 400 is fixed on the second clamp plate 300 with a rubber seal ring by the third screw 401 and the fourth screw 402 to pass through the first clamp plate 200 with the rubber seal ring and the second clamp plate 300 with the rubber seal ring and the end.
  • the cover 100 is isolated.
  • the device 10 according to the embodiment of the present invention isolates the connected component and the magnetic liquid sealing structure through two plywood plates, so that the axial and radial deformation and displacement of the connecting component will not be loaded on the components in the basic sealing structure of the magnetic liquid, so that Extend the life of magnetic liquid seals.
  • the second clamping plate 330 is installed in the groove of the end cover 100; the third rubber sealing ring 310 and the fifth rubber sealing ring 320 are installed on the second clamping plate 330.
  • the first rubber seal ring 210 is installed in the groove of the first clamping plate 220 to form the first clamping plate 200 with the rubber sealing ring; the first clamping plate 200 with the rubber sealing ring is passed through the first screw 201, the first Two screws 202 are fixed on the end cover 100; the basic sealing structure 400 is fixed on the second clamping plate 330 through the third screw 401 and the fourth screw 402.
  • the magnetic liquid sealing basic sealing structure 400 is fixed on the structure such as the end cover 100 or the flange of the device to be sealed through the first clamping plate 220 and the second clamping plate 330 to isolate the device that needs sealing.
  • the structure of the end cap 100 or flange and the magnetic liquid seal basic seal structure 400, the axial and radial deformation and displacement of the connecting components will not be loaded on the parts in the magnetic liquid basic seal structure 400, so that the magnetic liquid can be extended Seal life
  • the basic sealing structure 400 further includes a housing 410, a shaft sleeve 420 (not specifically shown in the figure) with a sealing group, a left end ring 430, and a right end ring 440.
  • a fourth rubber seal ring 411 and a fifth rubber seal ring 412 are installed in the groove of the housing 410.
  • the sleeve 420 with the seal group is installed in the housing 410.
  • the sleeve 420 with the seal group includes a right rolling bearing 421, a right magnetic spacer 422, a right pole shoe 423 with a rubber seal, a ring-shaped permanent magnet 424, a belt Left pole shoe 425 with rubber seal, left magnetic ring 426, left rolling bearing 427 and bushing 428, right rolling bearing 421, right magnetic ring 422, right pole shoe with rubber seal 423, annular permanent magnet 424, with rubber
  • the left pole shoe 425, the left magnetic ring 426, and the left rolling bearing 427 of the seal ring are sleeved on the outer side of the sleeve 428 in order.
  • the left end ring 430 is sleeved on the outer side of the sleeve 420 with the seal group, and is screwed into the thread on the inner wall of the housing.
  • the right end 440 is sleeved on the other side of the outer side of the sleeve with the seal group, and the first set screw 441 and the second set screw 442 are screwed in.
  • the right pole shoe 423 with the rubber seal ring includes a sixth rubber seal ring 403 and a right pole shoe 404, and the sixth rubber seal ring 403 is installed in the groove of the right pole shoe 404;
  • the left pole shoe 425 with the rubber seal ring includes a seventh rubber seal ring 405 and a left pole shoe 406, and the seventh rubber seal ring 405 is installed in the groove of the left pole shoe 406.
  • the sixth rubber seal ring 403 is installed in the groove of the right pole shoe 404 to form a right pole shoe 423 with a rubber seal ring, and the seventh rubber seal ring 405 is installed in the left pole shoe 406.
  • the left pole shoe 425 with a rubber seal is formed in the groove of the right; the right rolling bearing 421, the right magnetic spacer 422, the right pole shoe with a rubber seal 423, the annular permanent magnet 424, and the left pole shoe with a rubber seal are formed.
  • the left magnetic ring 426, and the left rolling bearing 427 are sequentially sleeved on the outer side of the sleeve 428 to form a sleeve 420 with a seal group; the sleeve 420 with the seal group is installed in the housing 410; and the left end ring 430 is sleeved on the shaft
  • the outer side of the sleeve 420 is rotated and screwed into the thread of the inner wall of the housing 410;
  • the right end ring 440 is sleeved on the outside of the shaft sleeve 420, and the first set screw 441 and the second set screw 442 are screwed in; the second rubber seal is sealed
  • the ring 411 and the fourth rubber sealing ring 412 are installed in the groove of the housing 410, and thus the installation of the magnetic liquid seal basic sealing structure 400 is completed.
  • the left pole shoe 406 and the right pole shoe 404 are both magnetic conductive materials, wherein the inner walls of the left pole shoe 406 and the right pole shoe 406 are processed with pole teeth and cogging, each The number of pole teeth of the pole shoe is 2 to 10, the width of the pole teeth is at least 0.3 mm, and the width of the tooth groove is at least 0.5 mm. That is, the width of the pole teeth is greater than 0.3 mm, and the width of the cogging is greater than 0.5 mm.
  • the materials of the left magnetic ring 426, the right magnetic ring 422, and the casing 410 are all non-magnetic materials.
  • the left magnetic isolation ring 426 and the right magnetic isolation ring 422 may have a circular ring structure, and the material thereof is a non-magnetic material such as stainless steel, which is not specifically limited herein.
  • the seal gap between the left pole shoe 423 with the rubber seal ring, the right pole shoe 425 with the rubber seal ring, and the shaft sleeve 428 is 0.001 to 1 mm, and the seal gap is filled with Magnetic liquid to achieve dynamic sealing.
  • the sealing gap between the left pole shoe 406, the right pole shoe 404, and the shaft sleeve 428 can be selected from 0.001 to 1 mm.
  • the material of the left pole shoe 406, the right pole shoe 404, and the shaft sleeve 428 is selected from the guide Materials with good magnetic properties, such as electric pure iron, can be set by those skilled in the art according to actual conditions, and are not specifically limited here.
  • the type of magnetic liquid can be selected according to the actual working conditions of the sealing gas and the ambient temperature of different base carrier liquid magnetic liquid, general vacuum seal can choose ester-based magnetic liquid, fluorocarbon-based magnetic liquid or silicone oil-based magnetic liquid, Low temperature sealing can be selected with silicone oil-based magnetic liquid.
  • the left rolling bearing 427 and the right rolling bearing 421 can select different types of bearings, such as deep groove ball bearings or angular contact ball bearings, according to the axial and radial force conditions under actual working conditions.
  • the material of the ring-shaped permanent magnet 424 can be ferromagnetic, such as samarium iron boron.
  • the left end ring 430 may have a circular ring structure, and a thread is processed on the outer side, and the thread on the inner wall of the housing 410 can be screwed on, and the thread can be tightened to position the parts on the shaft sleeve axially.
  • the right end ring 440 may have a circular ring structure with 2 to 6 threaded holes on the wall surface. When the magnetic liquid sealing device is used in connection with the shaft, the shaft can be clamped by the set screws in each threaded hole. .
  • the device 10 of the embodiment of the present invention isolates the connecting member from the magnetic liquid sealing structure by a splint.
  • the axial and radial deformation and displacement of the connecting member will not be loaded on the parts in the magnetic liquid sealing structure, and the magnetic liquid sealing can be extended. Life.
  • the two components are separated from the magnetic liquid sealing structure by two splints, which overcomes the end cap or method connected with the magnetic liquid sealing structure.
  • the axial and radial deformation of the joint caused by the axial and radial deformation or displacement of the structure such as the blue, so that the axial and radial deformation and displacement of the connecting component will not be loaded into the magnetic liquid basic seal structure.
  • the service life of the magnetic liquid seal can be extended.
  • 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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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

一种适应连接处轴向和径向位移的磁性液体密封装置（10），包括：端盖（100）；带橡胶密封圈的第一夹板（200），带橡胶密封圈的第一夹板（200）通过第一螺钉（201）和第二螺钉（202）固定在端盖（100）上；带橡胶密封圈的第二夹板（300），带橡胶密封圈的第二夹板（300）装入端盖（100）的凹槽内；基本密封结构（400），基本密封结构（400）通过第三螺钉（401）和第四螺钉（402）固定在带橡胶密封圈的第二夹板（300）上，以通过带橡胶密封圈的第一夹板（200）和带橡胶密封圈的第二夹板（300）与端盖（100）隔离；该装置通过两块夹板隔离连接的部件和磁性液体密封结构，从而使得连接部件的轴向和径向的变形及位移不会加载到磁性液体基本密封结构中的零件上，可以延长磁性液体密封的使用寿命。

Description

适应连接处轴向和径向位移的磁性液体密封装置 技术领域
本发明涉及机械工程密封技术领域，特别涉及一种适应连接处轴向和径向位移的磁性液体密封装置。
背景技术
磁性液体是一种兼具液体的流动性与固体磁性材料对磁场的响应特性的一种新型功能材料，在工程领域有着广泛的应用，其中磁性液体密封是磁性液体的众多应用之一。磁性液体密封技术具有零泄漏、无磨损、寿命长、维修方便等优点，广泛地应用于各种行业的不同密封场合。在化工等领域中，磁性液体密封装置经常与大直径的端盖或法兰等结构相连接，这些端盖或法兰等结构的直径较大，在受力或受热时会出现较大的变形，因此与磁性液体密封装置相连接的部分会产生轴向或径向位移，导致磁性液体密封装置的部件受到较大的轴向力或径向力，影响使用时的性能，缩短磁性液体密封装置的工作寿命。
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应连接处轴向和径向位移的磁性液体密封装置，该装置使得连接部件的轴向和径向的变形及位移不会加载到磁性液体基本密封结构中的零件上，可以延长磁性液体密封的使用寿命。
为达到上述目的，本发明一方面实施例提出了一种适应连接处轴向和径向位移的磁性液体密封装置，包括：端盖；带橡胶密封圈的第一夹板，所述带橡胶密封圈的第一夹板通过第一螺钉和第二螺钉固定在所述端盖上，其中，所述带橡胶密封圈的第一夹板包括第一橡胶密封圈和第一夹板，所述第一橡胶密封圈安装在所述第一夹板的凹槽内；带橡胶密封圈的第二夹板，所述带橡胶密封圈的第二夹板装入所述端盖的凹槽内，其中，所述带橡胶密封圈的第二夹板包括第二橡胶密封圈、第三橡胶密封圈和第二夹板，所述第二橡胶密封圈和所述第三橡胶密封圈安装在所述第二夹板的凹槽内；基本密封结构，所述基本密封结构通过第三螺钉和第四螺钉固定在所述带橡胶密封圈的第二夹板上，以通过所述带橡胶密封圈的第一夹板和所述带橡胶密封圈的第二夹板与所述端盖隔离。
本发明实施例的适应连接处轴向和径向位移的磁性液体密封装置，通过两块夹板隔离连接的部件和磁性液体密封结构，克服了由于与磁性液体密封结构连接的端盖或法兰等结 构的轴向和径向的变形或位移引起的连接处的轴向和径向位移，从而使得连接部件的轴向和径向的变形及位移不会加载到磁性液体基本密封结构中的零件上，可以延长磁性液体密封的使用寿命。
另外，根据本发明上述实施例的适应连接处轴向和径向位移的磁性液体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，所述基本密封结构还包括：壳体，所述壳体凹槽内安装有第四橡胶密封圈和第五橡胶密封圈；带密封组的轴套，所述带密封组的轴套装入所述壳体内，其中，所述带密封组的轴套包括右滚动轴承、右隔磁环、带橡胶密封圈的右极靴、环形永磁体、带橡胶密封圈的左极靴、左隔磁环、左滚动轴承和轴套，所述右滚动轴承、所述右隔磁环、所述带橡胶密封圈的右极靴、环形永磁体、所述带橡胶密封圈的左极靴、所述左隔磁环和所述左滚动轴承依次套在所述轴套外侧；左端环，所述左端环套在所述带密封组的轴套外侧的一测，并旋转拧入所述壳体内壁的螺纹；右端环，所述右端环套在所述带密封组的轴套外侧的另一侧，并将第一紧定螺钉、第二紧定螺钉拧入。
进一步地，在本发明的一个实施例中，其中，所述带橡胶密封圈的右极靴包括第六橡胶密封圈和右极靴，所述第六橡胶密封圈安装在所述右极靴的凹槽内；所述带橡胶密封圈的左极靴包括第七橡胶密封圈和左极靴，所述第七橡胶密封圈安装在所述左极靴的凹槽内。
进一步地，在本发明的一个实施例中，所述左极靴和所述右极靴均为导磁性材料，其中，所述左极靴和所述右极靴的内壁加工有极齿和齿槽，每个极靴的所述极齿个数为2至10个，所述极齿的宽度至少为0.3mm，所述齿槽宽度至少为0.5mm。
进一步地，在本发明的一个实施例中，所述带橡胶密封圈的左极靴、所述带橡胶密封圈的右极靴和所述轴套之间的密封间隙为0.001至1mm，所述密封间隙内注有磁性液体，以实现动密封。
进一步地，在本发明的一个实施例中，所述左隔磁环、所述右隔磁环、所述壳体的材料为非导磁性材料。
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应连接处轴向和径向位移的磁性液体密封装置的结构示意图。
附图标记说明：
适应连接处轴向和径向位移的磁性液体密封装置10、端盖100、带橡胶密封圈的第一夹板200、第一螺钉201、第二螺钉202、第一橡胶密封圈210、第一夹板220、带橡胶密封圈的第二夹板300、第二橡胶密封圈310、第三橡胶密封圈320、第二夹板330、第三螺钉401、第四螺钉402、第六橡胶密封圈403、右极靴404、第七橡胶密封圈405、左极靴406、壳体410、第四橡胶密封圈411、第五橡胶密封圈412、右滚动轴承421、右隔磁环422、带橡胶密封圈的右极靴423、环形永磁体424、带橡胶密封圈的左极靴425、左隔磁环426、左滚动轴承427、轴套428、左端环430、右端环440、第一紧定螺钉441、第二紧定螺钉442。
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应连接处轴向和径向位移的磁性液体密封装置。
图1是本发明一个实施例的适应连接处轴向和径向位移的磁性液体密封装置的结构示意图。
如图1所示，该适应连接处轴向和径向位移的磁性液体密封装置10包括：端盖100、带橡胶密封圈的第一夹板200、带橡胶密封圈的第二夹板300和基本密封结构400(图中未具体标识)。
其中，端盖100。带橡胶密封圈的第一夹板200通过第一螺钉201和第二螺钉202固定在端盖100上，其中，带橡胶密封圈的第一夹板200包括第一橡胶密封圈210和第一夹板220，第一橡胶密封圈210安装在第一夹板220的凹槽内。带橡胶密封圈的第二夹板300装入端盖100的凹槽内，其中，带橡胶密封圈的第二夹板300包括第二橡胶密封圈310、第三橡胶密封圈320和第二夹板330，第二橡胶密封圈310和第三橡胶密封圈320安装在第二夹板330的凹槽内。基本密封结构400通过第三螺钉401和第四螺钉402固定在带橡胶密封圈的第二夹板300上，以通过带橡胶密封圈的第一夹板200和带橡胶密封圈的第二夹板300与端盖100隔离。本发明实施例的装置10通过两块夹板隔离连接的部件和磁性液体密封结构，从而使得连接部件的轴向和径向的变形及位移不会加载到磁性液体基本密封结构中的零件上，可以延长磁性液体密封的使用寿命。
具体而言，如图1所示，本发明实施例将第二夹板330装入端盖100的凹槽内；将第 三橡胶密封圈310、第五橡胶密封圈320安装在第二夹板330的凹槽内；将第一橡胶密封圈210安装在第一夹板220的凹槽内，形成带橡胶密封圈的第一夹板200；将带橡胶密封圈的第一夹板200通过第一螺钉201、第二螺钉202固定在端盖100上；将基本密封结构400通过第三螺钉401、第四螺钉402固定在第二夹板330上。
在本发明实施例的装置10工作时，磁性液体密封基本密封结构400通过第一夹板220和第二夹板330固定在需要密封的装置的端盖100或法兰等结构上，隔离需要密封的装置的端盖100或法兰等结构和磁性液体密封基本密封结构400，连接部件的轴向和径向的变形和位移不会加载到磁性液体基本密封结构400中的零件上，从而可以延长磁性液体密封的使用寿命；
进一步地，在本发明的一个实施例中，基本密封结构400还包括：壳体410、带密封组的轴套420(图中未具体标识)、左端环430和右端环440。
其中，壳体410凹槽内安装有第四橡胶密封圈411和第五橡胶密封圈412。带密封组的轴套420装入壳体410内，其中，带密封组的轴套420包括右滚动轴承421、右隔磁环422、带橡胶密封圈的右极靴423、环形永磁体424、带橡胶密封圈的左极靴425、左隔磁环426、左滚动轴承427和轴套428，右滚动轴承421、右隔磁环422、带橡胶密封圈的右极靴423、环形永磁体424、带橡胶密封圈的左极靴425、左隔磁环426和左滚动轴承427依次套在轴套428外侧。左端环430套在带密封组的轴套420外侧的一测，并旋转拧入壳体内壁的螺纹。右端440环套在带密封组的轴套外侧的另一侧，并将第一紧定螺钉441、第二紧定螺钉442拧入。
在本发明的一个实施例中，其中，带橡胶密封圈的右极靴423包括第六橡胶密封圈403和右极靴404，第六橡胶密封圈403安装在右极靴404的凹槽内；带橡胶密封圈的左极靴425包括第七橡胶密封圈405和左极靴406，第七橡胶密封圈405安装在左极靴406的凹槽内。
具体而言，如图1所示，第六橡胶密封圈403安装在右极靴404的凹槽内，形成带橡胶密封圈的右极靴423，第七橡胶密封圈405安装在左极靴406的凹槽内，形成带橡胶密封圈的左极靴425；将右滚动轴承421、右隔磁环422、带橡胶密封圈的右极靴423、环形永磁体424、带橡胶密封圈的左极靴425、左隔磁环426、左滚动轴承427依次套在轴套428的外侧，形成带密封组的轴套420；将带密封组的轴套420装入壳体410；将左端环430套在轴套420外侧，并旋转拧入壳体410内壁的螺纹；将右端环440套在轴套420的外侧，并将第一紧定螺钉441、第二紧定螺钉442拧入；将第二橡胶密封圈411、第四橡胶密封圈412安装在壳体410的凹槽内，至此，完成了磁性液体密封基本密封结构400的安装。
进一步地，在本发明的一个实施例中，左极靴406和右极靴404均为导磁性材料，其中，左极靴406和右极靴406的内壁加工有极齿和齿槽，每个极靴的极齿个数为2至10个，极齿的宽度至少为0.3mm，齿槽宽度至少为0.5mm。也就是说，极齿的宽度大于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，左隔磁环426、右隔磁环422、壳体410的材料均为非导磁性材料。
具体而言，左隔磁环426和右隔磁环422可以为圆环形结构，其材料为非导磁性材料，如不锈钢，在此不做具体限定。
进一步地，在本发明的一个实施例中，带橡胶密封圈的左极靴423、带橡胶密封圈的右极靴425和轴套428之间的密封间隙为0.001至1mm，密封间隙内注有磁性液体，以实现动密封。
也就说，左极靴406、右极靴404和轴套428之间的密封间隙可以从0.001～1mm范围内选取，其中，左极靴406、右极靴404、轴套428的材料选用导磁性能良好的材料，如电工纯铁，本领域技术人员可以根据实际情况进行设置，在此不做具体限定。其中，磁性液体的种类可以根据实际工况下密封气体和环境温度的不同选择不同基载液的磁性液体，一般真空密封可选用酯基磁性液体，氟碳化合物基磁性液体或者硅油基磁性液体，低温密封可选用硅油基磁性液体。
进一步地，左滚动轴承427和右滚动轴承421可根据实际工况下轴向和径向受力情况来选择不同型号的轴承，如深沟球轴承或者角接触球轴承等。环形永磁体424的材料可以选用铁磁质，比如铷铁硼。左端环430可以为圆环形结构，外侧加工有螺纹，与壳体410内壁的螺纹可以旋合，拧紧该螺纹，可以将轴套上的零件轴向定位。右端环440可以为圆环形结构，壁面上开有2～6个螺纹孔，磁性液体密封装置在使用过程中，与轴相连接时，可以通过各个螺纹孔中的紧定螺钉将轴夹紧。
综上，本发明实施例装置10通过夹板隔离连接部件和磁性液体密封结构，连接部件的轴向和径向的变形及位移不会加载到磁性液体密封结构中的零件上，可以延长磁性液体密封的使用寿命。从而有效解决了磁性液体密封装置安装在大直径的端盖或法兰等结构上时，由于端盖或法兰受力或受热时出现较大的变形，导致磁性液体密封结构内的部件受到较大的轴向力或径向力，密封寿命缩短的问题。
根据本发明实施例提出的适应连接处轴向和径向位移的磁性液体密封装置，通过两块夹板隔离连接的部件和磁性液体密封结构，克服了由于与磁性液体密封结构连接的端盖或法兰等结构的轴向和径向的变形或位移引起的连接处的轴向和径向位移，从而使得连接部 件的轴向和径向的变形及位移不会加载到磁性液体基本密封结构中的零件上，可以延长磁性液体密封的使用寿命。
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. 一种适应连接处轴向和径向位移的磁性液体密封装置，其特征在于，包括：
    端盖；
    带橡胶密封圈的第一夹板，所述带橡胶密封圈的第一夹板通过第一螺钉和第二螺钉固定在所述端盖上，其中，所述带橡胶密封圈的第一夹板包括第一橡胶密封圈和第一夹板，所述第一橡胶密封圈安装在所述第一夹板的凹槽内；
    带橡胶密封圈的第二夹板，所述带橡胶密封圈的第二夹板装入所述端盖的凹槽内，其中，所述带橡胶密封圈的第二夹板包括第二橡胶密封圈、第三橡胶密封圈和第二夹板，所述第二橡胶密封圈和所述第三橡胶密封圈安装在所述第二夹板的凹槽内；以及
    基本密封结构，所述基本密封结构通过第三螺钉和第四螺钉固定在所述带橡胶密封圈的第二夹板上，以通过所述带橡胶密封圈的第一夹板和所述带橡胶密封圈的第二夹板与所述端盖隔离。
  2. 根据权利要求1所述的适应连接处轴向和径向位移的磁性液体密封装置，其特征在于，所述基本密封结构还包括：
    壳体，所述壳体凹槽内安装有第四橡胶密封圈和第五橡胶密封圈；
    带密封组的轴套，所述带密封组的轴套装入所述壳体内，其中，所述带密封组的轴套包括右滚动轴承、右隔磁环、带橡胶密封圈的右极靴、环形永磁体、带橡胶密封圈的左极靴、左隔磁环、左滚动轴承和轴套，所述右滚动轴承、所述右隔磁环、所述带橡胶密封圈的右极靴、环形永磁体、所述带橡胶密封圈的左极靴、所述左隔磁环和所述左滚动轴承依次套在所述轴套外侧；
    左端环，所述左端环套在所述带密封组的轴套外侧的一测，并旋转拧入所述壳体内壁的螺纹；
    右端环，所述右端环套在所述带密封组的轴套外侧的另一侧，并将第一紧定螺钉、第二紧定螺钉拧入。
  3. 根据权利要求2所述的适应连接处轴向和径向位移的磁性液体密封装置，其特征在于，其中，
    所述带橡胶密封圈的右极靴包括第六橡胶密封圈和右极靴，所述第六橡胶密封圈安装在所述右极靴的凹槽内；
    所述带橡胶密封圈的左极靴包括第七橡胶密封圈和左极靴，所述第七橡胶密封圈安装在所述左极靴的凹槽内。
  4. 根据权利要求3所述的适应连接处轴向和径向位移的磁性液体密封装置，其特征在于，所述左极靴和所述右极靴均为导磁性材料，其中，所述左极靴和所述右极靴的内壁加工有极齿和齿槽，每个极靴的所述极齿个数为2至10个，所述极齿的宽度至少为0.3mm，所述齿槽宽度至少为0.5mm。
  5. 根据权利要2求所述的适应连接处轴向和径向位移的磁性液体密封装置，其特征在于，所述带橡胶密封圈的左极靴、所述带橡胶密封圈的右极靴和所述轴套之间的密封间隙为0.001至1mm，所述密封间隙内注有磁性液体，以实现动密封。
  6. 根据权利要求2所述的适应连接处轴向和径向位移的磁性液体密封装置，其特征在于，所述左隔磁环、所述右隔磁环、所述壳体的材料为非导磁性材料。
PCT/CN2018/094466 2018-07-04 2018-07-04 适应连接处轴向和径向位移的磁性液体密封装置 WO2020006700A1 (zh)

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