CN112727922A - Magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance - Google Patents

Magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance Download PDF

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Publication number
CN112727922A
CN112727922A CN202011548638.0A CN202011548638A CN112727922A CN 112727922 A CN112727922 A CN 112727922A CN 202011548638 A CN202011548638 A CN 202011548638A CN 112727922 A CN112727922 A CN 112727922A
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China
Prior art keywords
magnetic
liquid double
bearing
suspension bearing
static pressure
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CN202011548638.0A
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CN112727922B (en
Inventor
陈丽缓
刘子鹏
赵建华
蔡毅
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North China Institute of Aerospace Engineering
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North China Institute of Aerospace Engineering
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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
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
    • 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
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0459—Details of the magnetic circuit
    • F16C32/0468—Details of the magnetic circuit of moving parts of the magnetic circuit, e.g. of the rotor
    • 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
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
    • 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
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

The invention provides a magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance, wherein a magnetic-liquid double-suspension bearing stator comprises 8 magnetic poles, the surfaces of a bearing cavity and a bionic magnetic sleeve are provided with processing bionic textures, the bottom of each magnetic pole is provided with the bearing cavity, the outer edge of each bearing cavity is plated with a hydrophilic material, and the inner part of the bearing cavity is plated with a hydrophobic material; similarly, the edge of the bionic magnetic conductive sleeve of the magnetic liquid double-suspension bearing is plated with a hydrophilic material, and the interior of the bionic magnetic conductive sleeve is plated with a hydrophobic material; the hydrophilic material has strong adsorption capacity, the water molecules of the fluid flowing through the hydrophilic material part are attracted so as to increase the resistance, the hydrophobic material has strong repulsion, the water molecules of the fluid flowing through the hydrophobic material part are repelled so as to reduce the resistance and accelerate the flow, the hydrophilic surface can be more wetted through the coating treatment, the friction loss is reduced when the stator and the magnetic conductive sleeve have rubbing faults, and the static pressure supporting force of the magnetic-liquid double-suspension bearing static pressure supporting system can be improved by the hydrophilicity of the hydrophilic material and the repulsion of the hydrophobic material. Therefore, the coating treatment method can improve the friction performance and the supporting performance of the magnetic-liquid double-suspension bearing.

Description

Magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance
Technical Field
The invention relates to the field of design of magnetic-liquid double-suspension bearings, in particular to a hydrostatic bearing.
Background
The magnetic-hydraulic double-suspension bearing adopts double support of electromagnetic force and static pressure supporting force, is a novel non-mechanical contact bearing, and has the advantages of no friction, no abrasion, large bearing capacity, high motion precision, long service life and the like. Therefore, the method is generally regarded and widely applied. The existing magnetic liquid double-suspension bearing does not carry out coating treatment on the bionic texture surface and the bionic magnetic sleeve surface of a supporting cavity, the invention plates a hydrophilic material on the frame of each supporting cavity respectively, and plates a hydrophobic material inside the supporting cavity; similarly, the edge part of the bionic magnetic conductive sleeve is plated with a hydrophilic material, the interior of the bionic magnetic conductive sleeve is plated with a hydrophobic material, and the friction performance and the static pressure supporting performance of the magnetic-liquid double-suspension bearing static pressure supporting system can be improved through the coating treatment.
Disclosure of Invention
The invention aims to solve the technical problems of reducing friction loss when a magnetic-liquid double-suspension bearing hydrostatic bearing system is collided and rubbed and improving hydrostatic bearing performance.
In order to solve the technical problem, the invention provides a magnetic liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance, which comprises the steps of respectively plating a hydrophilic material on the frame at the bottom of each supporting cavity and plating a hydrophobic material inside the supporting cavity; similarly, the matched part of the bionic flux sleeve and the frame of the supporting cavity is plated with a hydrophilic material, and the interior of the bionic flux sleeve is plated with a hydrophobic material; the fluid flows through the surface of the hydrophilic material, water molecules are attracted, so that the fluid resistance is increased, the fluid flows through the surface of the hydrophobic material, the water molecules are repelled, the fluid resistance is reduced, the hydrophilic surface can be more wetted through the coating treatment, the friction loss is reduced when the stator and the magnetic conductive sleeve have rubbing faults, and the hydrophilicity of the hydrophilic material and the repellence of the hydrophobic material can improve the static pressure supporting force of the magnetic-liquid double-suspension bearing static pressure supporting system.
The frame at the bottom of the magnetic liquid double-suspension bearing supporting cavity is plated with a hydrophilic material, and the inside of the supporting cavity is plated with a hydrophobic material;
the outer edge of the bionic flux sleeve is plated with a hydrophilic material, and the interior of the bionic flux sleeve is plated with a hydrophobic material;
drawings
FIG. 1 is a schematic view of a magnetic-fluid double suspension bearing system in an embodiment of the present invention;
FIG. 2 is a view of the coating portion of the stator supporting cavity of the magnetic-liquid double-suspension bearing in the embodiment of the invention;
FIG. 3 is a view of a portion of a bionic flux sleeve coating in an embodiment of the invention;
in the figure:
1-magnetic pole/supporting cavity, 2-bionic magnetic conductive sleeve, 3-magnetic liquid double-suspension bearing stator, 4-coating, 5-liquid inlet hole, 6-hydrophilic material coating, 7-hydrophobic material coating, 8-bionic pit and 9-hydrophobic material coating. 10-coating with hydrophilic material.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the invention provides a method for treating a coating of a magnetic-liquid double-suspension bearing, which reduces friction loss and improves the static pressure bearing performance, and comprises the following steps:
1. the frame at the bottom of each supporting cavity is plated with a hydrophilic material, and the interior of each supporting cavity is plated with a hydrophobic material;
2. the matching part of the bionic magnetic conduction sleeve and the magnetic pole is plated with a hydrophilic material, and the other parts are plated with a hydrophobic material.
As shown in FIG. 2, in the different coating embodiments of the magnetic-liquid double-suspension bearing stator, the region 7 is made of hydrophilic material, and the region 8 is made of hydrophobic material.
As shown in fig. 3, the areas 7 and 8 of the different coating embodiments of the bionic magnetic conductive sleeve are made of hydrophilic materials and hydrophobic materials respectively.
The fluid flows through the surface of the hydrophilic material, water molecules are attracted, so that the fluid resistance is increased, the fluid flows through the surface of the hydrophobic material, the water molecules are repelled, the fluid resistance is reduced, the resistance between the supporting cavity and the bionic flux sleeve gap is increased through coating treatment, and the wetting degree of the friction surface of the hydrophilic area is improved. When the stator and the magnetic sleeve have collision and friction faults, friction loss is reduced, and the hydrophilic property of the hydrophilic material and the repulsive property of the hydrophobic material can improve the static pressure supporting force of the magnetic-liquid double-suspension bearing static pressure supporting system. Therefore, the friction performance and the static pressure supporting performance of the magnetic-liquid double-suspension bearing static pressure supporting system are improved.

Claims (1)

1. A magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving hydrostatic bearing performance is characterized in that: plating a hydrophilic material on the frame at the bottom of each supporting cavity, and plating a hydrophobic material on the frame inside the supporting cavity; similarly, the edge part of the bionic magnetic conductive sleeve is plated with a hydrophilic material, and the inner part of the edge of the bionic magnetic conductive sleeve is plated with a hydrophobic material. Through the coating treatment, the friction performance and the supporting performance of the magnetic-liquid double-suspension bearing can be improved.
CN202011548638.0A 2020-12-24 2020-12-24 Magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance Active CN112727922B (en)

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CN202011548638.0A CN112727922B (en) 2020-12-24 2020-12-24 Magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance

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Application Number Priority Date Filing Date Title
CN202011548638.0A CN112727922B (en) 2020-12-24 2020-12-24 Magnetic-liquid double-suspension bearing coating treatment method for reducing friction loss and improving static pressure bearing performance

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CN112727922B CN112727922B (en) 2022-11-08

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GB1474017A (en) * 1974-05-16 1977-05-18 Searle & Co Support member for carrying aqueous material
JPH0297712A (en) * 1988-10-05 1990-04-10 Koyo Seiko Co Ltd Dynamic pressure bearing
JPH02256914A (en) * 1989-03-29 1990-10-17 Agency Of Ind Science & Technol Gas bearing with superconducting magnet bearing
JPH06335199A (en) * 1993-05-25 1994-12-02 Nippon Koei Co Ltd Hydraulic turbine generator
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JPH11108051A (en) * 1997-10-07 1999-04-20 Sankyo Seiki Mfg Co Ltd Dynamic pressure bearing device and its manufacture
US20060108287A1 (en) * 2004-09-21 2006-05-25 Arnold Todd E Discrete zoned microporous nylon coated glass platform for use in microwell plates and methods of making and using same
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KR102048574B1 (en) * 2018-08-23 2020-01-22 엘지전자 주식회사 Motor and Manufacturing method of the same
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GB1474017A (en) * 1974-05-16 1977-05-18 Searle & Co Support member for carrying aqueous material
JPH0297712A (en) * 1988-10-05 1990-04-10 Koyo Seiko Co Ltd Dynamic pressure bearing
JPH02256914A (en) * 1989-03-29 1990-10-17 Agency Of Ind Science & Technol Gas bearing with superconducting magnet bearing
JPH06335199A (en) * 1993-05-25 1994-12-02 Nippon Koei Co Ltd Hydraulic turbine generator
US5789837A (en) * 1996-08-14 1998-08-04 Korea Advanced Institute Of Science & Technology High-temperature superconducting magnetic bearing
JPH11108051A (en) * 1997-10-07 1999-04-20 Sankyo Seiki Mfg Co Ltd Dynamic pressure bearing device and its manufacture
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CN111237338A (en) * 2020-01-14 2020-06-05 燕山大学 Single-degree-of-freedom magnetic-liquid double-suspension bearing control system and method
CN111692209A (en) * 2020-05-25 2020-09-22 南京航空航天大学 Magnetic fluid controllable support micro platform based on extreme infiltration interface and manufacturing method
CN111927884A (en) * 2020-08-11 2020-11-13 燕山大学 Magnetic-liquid double-suspension bearing magnetic sleeve with bionic non-smooth surface and oil through hole

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