CN1251465A - Method for localizing sensitive material to magnetic-field responser-solid-phase powder material, and damping device thereof - Google Patents

Method for localizing sensitive material to magnetic-field responser-solid-phase powder material, and damping device thereof Download PDF

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CN1251465A
CN1251465A CN 99120044 CN99120044A CN1251465A CN 1251465 A CN1251465 A CN 1251465A CN 99120044 CN99120044 CN 99120044 CN 99120044 A CN99120044 A CN 99120044A CN 1251465 A CN1251465 A CN 1251465A
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solid
magnetic
powder material
carrier
phase powder
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CN1150569C (en
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邱玲
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Priority to AU12665/01A priority patent/AU1266501A/en
Priority to PCT/CN2000/000419 priority patent/WO2001034997A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H01F1/447—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids characterised by magnetoviscosity, e.g. magnetorheological, magnetothixotropic, magnetodilatant liquids
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/26—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions
    • F16F13/30—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions comprising means for varying fluid viscosity, e.g. of magnetic or electrorheological fluids
    • F16F13/305—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions comprising means for varying fluid viscosity, e.g. of magnetic or electrorheological fluids magnetorheological
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535—Magnetorheological [MR] fluid dampers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid-Damping Devices (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

The present invention relates to a magnetic field response sensing mterial-solid phase powder material localization method and its damping device. It is characterized by that the magnetic field response sensing material-solid phose powder material greater than submicron level being in magnetic current inversion body is limited in the internal space formed by filter and magnetic current inversion damper, and after the carrier of said magnetic current inversion body solid phase powder material is flowed into the magnetic current inversion body, and after possed through the filter the solid phase powder material stored in said internal space and the carrier of said solid powder material are separated, the carrier is flowed out from the local region. Said invention is low in cost, high reliability, and can obviously raise the magnetic current inversion effect of the magnetic current inversion body.

Description

The method and the damping device thereof of magnetic responsiveness smart material-solid-phase powder material localization
The present invention relates to a kind of method and damping device thereof that makes greater than the magnetic responsiveness smart material-solid-phase powder material localization of submicron order.
Be different from the magnetic fluid stabilising system, magneto-rheological fluid is a kind of astable system of functional mixture material that is suspended with magnetic responsiveness smart material-solid-phase powder material in fluid carrier.Adding under the action of a magnetic field rheological behavior generation marked change of its fluid itself.Generally speaking, the granularity of magnetic responsiveness smart material-solid-phase powder material is a submicron order in the magnetic fluid stabilising system, and the granularity of magnetic responsiveness smart material-solid-phase powder material is that micron order arrives several millimeters in the astable system of magneto-rheological fluid, and is promptly big by 10 3To 10 6Times, thereby quantitative change has caused the variation of matter on the characteristic.Apparently, adding under the action of a magnetic field, the apparent viscosity of the astable system of magneto-rheological fluid becomes 10 1To 10 8Doubly change, marked change is taking place but come down to the astable system rheological behavior of magneto-rheological fluid.Can flow freely under no externally-applied magnetic field effect as the astable system of magneto-rheological fluid, and can be changed into plastic body under the action of a magnetic field adding, in addition semi-solid.People will be called magnetic rheology effect adding the marked change that the astable system rheological behavior of magneto-rheological fluid is taken place under the action of a magnetic field.Thereby the astable system of this magneto-rheological fluid (hereinafter to be referred as magneto-rheological fluid) can be used for providing damping adding the rheological behavior that is embodied under the action of a magnetic field, as magneto-rheological fluid and device thereof being mainly used in half initiatively energy dissipating of various plant equipment and building, half active damping, half active buffer, half active shock insulation, become rigidity control, moment of torsion control, industries such as pressure flow pulsation control and pipeline vibration inhibition in the electrohydraulic servo-controlling system are to provide cheap, function admirable, performance and price is compared the high electromechanical integration new high-tech product of full active system.Have great significance in the level of above industry for improving the China and even the world.
Compare with electrorheological fluid, magneto-rheological fluid has its significant advantage: 1) under cheap process technology condition, do not need to apply highfield; 2) magnetic rheology effect is than the strong at least order of magnitude of electric rheological effect; 3) loose relatively to the requirement of environment for use condition; 4) existing magnetic technology maturation, soft magnet powder have been produced in enormous quantities etc.But similar to electrorheological fluid, magneto-rheological fluid exists fatal weakness equally: phase-splitting.Phase-splitting is the essential place of the especially astable system of non-colloidal dispersion, mainly be in this system the dispersate granularity in the decentralized medium greater than due to the sub-micron utmost point.Though use half initiatively energy dissipating, half active damping, half active buffer, half that the device of magneto-rheological fluid mainly concentrates on various plant equipment and building initiatively shock insulation, become industry such as pressure flow pulsation control and pipeline vibration inhibition in rigidity control, moment of torsion control, the electrohydraulic servo-controlling system.
Magneto-rheological fluid and damping device thereof such as world patent WO94/00704 " MAGNETORHEOLOGICAL FLUID DEVICES " (magneto-rheological fluid device) and world patent WO98/00653 " CONTROLLABLE VIBRATION APPARATUS " (controlled vibrating device), all there is the shortcoming of the following aspects in their employed magneto-rheological fluids: (one) phase-splitting, growth along with standing time, in the magneto-rheological fluid greater than the solid-phase powder material of submicron order can with the fluid carrier phase-splitting, though on well-beaten basis, its magnetic rheology effect is of slight difference, but use often for great majority and bring inconvenience, fully stir once more so that its homogeneous phase otherwise have only; (2) to using the abrasion of system, owing to be suspended in solid-phase powder material metal and its alloy often in the magneto-rheological fluid, they circulate in the application system high speed with its carrier, make system and use the components and parts abrasion, influence useful life; (3) the magneto-rheological fluid resistance to ag(e)ing is poor, because in order to improve the physical stability of magneto-rheological fluid, the solid-phase powder material in the magneto-rheological fluid is of a size of micron order, along with the increase of solid-phase powder material surface oxidation layer thickness, magnetic rheology effect weakens, and it is poor to embody its resistance to ag(e)ing; (4) cost height, for physics and the chemical stability of improving magneto-rheological fluid, high-quality powder valency height when using, often needs a large amount of magneto-rheological fluids and a large amount of high-quality powders in the large-scale circulatory system, thereby the cost height; (5) well-known, in certain volume percentage, magnetic rheology effect significantly increases with the increase of volume percentage, but under the prerequisite that flowability requires, the percent by volume of the solid-phase powder material that is added can not be too high, though magnetic rheology effect is than the strong order of magnitude of electric rheological effect, still seem a little less than some for some application scenario; (6) under the prerequisite that flowability requires, generally must add surfactant, but,, thereby bring corrosion with relevant seal for application device as acid surface active agent and basic surface activating agent because the surfactant that is added is a polar material; (7) use magneto-rheological fluid in large-scale application device and system, often need a large amount of magneto-rheological fluids, from the anti-dust pollution progression of the circulatory system, magneto-rheological fluid is " dirty oil " (dirty oil), obviously is a kind of artificial dust pollution; (8) although the remanent magnetism of soft magnetic material, especially soft magnet powder is less, but for some soft magnet powder, as the carbon steel powder, remanent magnetism still can not go to disregard, and the streaming potential in the circulatory system must cause electromagnetic pollution.
Purpose of the present invention is intended to the shortcoming at above-mentioned prior art existence, a kind of method that makes greater than the magnetic responsiveness smart material-solid-phase powder material localization of submicron order is provided, be about to be limited in filter and the zone, the formed inner space of magneto-rheological fluid damping device greater than the solid-phase powder material of submicron order, carrier greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order is flowed into, flow out the above zone, inner space, and forming the local magneto-rheological fluid in the zone, inner space as mentioned above, and provide the magneto-rheological fluid damping device that forms according to this principle.
The implementation of the object of the invention is: a kind of method that makes greater than the magnetic responsiveness smart material-solid-phase powder material localization of submicron order is that the magnetic responsiveness smart material-solid-phase powder material greater than submicron order is limited in by in filter B and the zone, the formed inner space of magnetorheological fluid damper C (unidirectional); Or will limit greater than the magnetic responsiveness phase sensitivity material-solid-phase powder material of submicron order by in filter A, B and the zone, the formed inner space of magnetorheological fluid damper C (two-way); After the carrier of described local magneto-rheological fluid solid-phase powder material flows into zone, above-mentioned inner space, the solid-phase powder material that stores promptly and in this zone, inner space forms the local magneto-rheological fluid, separate with the carrier of this solid powder by the solid-phase powder material that stores in this zone, inner space after the filter B, carrier flows out this zone, inner space (unidirectional); During reverse flow, separate with the carrier of this solid powder by the solid-phase powder material that stores in this zone, inner space behind the filter A, carrier flows out this zone, inner space (two-way).
Constitute by magnetorheological fluid damper C and filter B or magnetorheological fluid damper C and filter A, B; Described damper C is made of the air gap D in magnetic field and the magnetic field, when magnetic responsiveness smart material-solid-phase powder material passes through air gap D with its carrier, as long as flow direction is not parallel with the magnetic direction that is acted on, under the action of a magnetic field, magnetic responsiveness smart material-solid-phase powder material is reunited at the magnetic pole near zone in the local magneto-rheological fluid, thereby the generation magnetic rheology effect, filter B (unidirectional) is established in the outlet of solid powder carrier in the local magneto-rheological fluid; Or filter B and A (two-way) are established in the import and the outlet of solid powder carrier in the local magneto-rheological fluid; Described magnetic field is permanent-magnetic field, electromagnetic field, and the best is by the formed electromagnetic field of charged solenoid; Air gap D in the magnetic field can be arranged on charged solenoidal periphery (outer formula), also can be located in the charged solenoidal pipe along arranging (interior formula) with the uneven direction of charged solenoid axis, the best is along arranging (interior formula) with charged solenoid axis vertical direction, also can be located at the uneven direction layout of interior edge of charged solenoidal periphery and charged solenoidal pipe and charged solenoid axis simultaneously, the best is edge and charged solenoid axis vertical direction layout (interior formula) when wherein being located at the interior edge of charged solenoidal pipe with the uneven aspect of charged solenoid axis layout
Air gap D in the described magnetic field or for similar multistage being in series; Or be that similar level is in parallel; Or be different types (non-similar) multistage between series connection, or be the parallel connection of different types (non-similar) between multistage.
Described filter is to bear certain pressure reduction, and the porous material filter core of certain intensity is arranged, and its filtering accuracy is 0.00001mm-0.1mm, especially is 0.00001mm-0.05mm, and the best is 0.001mm-0.04mm.
The filter core of described filter has its corresponding certain pressure reduction that bears outward, and the housing of the porous material of certain intensity is arranged.
Described local magneto-rheological fluid is by constituting greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order with greater than the carrier of the magnetic responsiveness smart material-solid-phase powder material of submicron order; Described carrier is liquid, gas or the gas-liquid mixture that has additive, and best the above liquid comprises various free from corrosion liquid in order to have the liquids and gases of additive, and the above gas comprises various non-corrosiveness gases and Compressed Gas; When described carrier is when having the liquid of additive, described additive is various surfactants, and the addition of surfactant is 0% to 10% of a carrier bulk, and the best is 0% to 5%; Described solid-phase powder material is a soft magnet powder, is generally the mixture of various carbon steel powder and powdered alloy steel, especially pure iron and ferrous alloy, pure cobalt and cobalt-base alloys, pure nickel and nickel-base alloy and above-mentioned solid phase powder.
Described soft magnet powder scribbles face coat, and described coating is to improve magnetic conductance coating, antirust coat and be used for the insulating coating that the electrorheological fluid powder is handled.
The size of powder is at 0.001 millimeter to 100 millimeters, stock size is 0.001 millimeter to 5 millimeters, for the liquid-carrier optimum size is 0.015 millimeter to 1 millimeter, for the carrier gas optimum size is 0.001 millimeter to 0.1 millimeter, is 0.01 millimeter to 0.5 millimeter for gas-liquid mixed carrier the best.
The pattern of powder be sheet, needle-like, ellipsoid shape and spherical with and composition thereof.
Amount of fill is 1% to 100% of an entire inner space volume, is generally 10% to 90%, and the best is 30% to 80%, and its amount of fill comprises formed porosity between pine when dress powder of powder.
Advantage of the present invention is: (one) has avoided the phase-splitting problem of magneto-rheological fluid in system fully; (2) greatly suppressed magneto-rheological fluid to using the abrasion of element and system; (3) owing to can adopt large-sized magnetic responsiveness smart material-solid-phase powder material, the magneto-rheological fluid resistance to ag(e)ing strengthens greatly; (4) there is no need to prepare submicron order magnetic responsiveness smart material-solid-phase powder material for the physical stability of improving magneto-rheological fluid; (5) consumption of magnetic responsiveness smart material-solid-phase powder material is few, and cost is low; (6) on the basis of not improving general magneto-rheological fluid cost, can adopt high-quality, the quick material-solid-phase powder material of high-performance magnetic field responder; (7), thereby can significantly improve the magnetic rheology effect of magneto-rheological fluid owing to can increase the volume fraction of magnetic responsiveness smart material-solid-phase powder material at local; (8) also reduced of the powder pollution of magnetic responsiveness smart material-solid-phase powder material simultaneously for application system.
Content of the present invention is described in detail in detail with reference to the accompanying drawings.
Fig. 1 makes the method schematic diagram greater than the magnetic responsiveness smart material-solid-phase powder material localization of submicron order.
Fig. 2 local magneto-rheological fluid damping device structure principle chart (interior formula).
Fig. 3 local magneto-rheological fluid damping device structure principle chart (outer formula).
Fig. 4 local magneto-rheological fluid damping device structure principle chart (interior formula) embodiment.
Fig. 5 local magneto-rheological fluid damping device structure principle chart (outer formula) embodiment.
With reference to Fig. 1, make method be greater than the magnetic responsiveness smart material-solid-phase powder material localization of submicron order, to be limited in greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order by in filter B and the zone, the formed inner space of local magnetorheological fluid damper C (unidirectional), or will be limited in greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order by in filter A, B and the zone, the formed inner space of local magnetorheological fluid damper C (two-way).After the carrier of described local magneto-rheological fluid solid-phase powder material flows into above-mentioned inner space, the solid-phase powder material that stores promptly and in this inner space forms the local magneto-rheological fluid, separate with the carrier of this solid powder by the solid-phase powder material that stores in this inner space after the filter B, carrier flows out this inner space (unidirectional), in like manner, during reverse flow, separate with the carrier of this solid powder by the solid-phase powder material that stores in this inner space behind the filter A, carrier flows out this inner space (two-way).
Will be limited in greater than the solid-phase powder material of submicron order in filter and the zone, the formed inner space of local magnetorheological fluid damper described in the goal of the invention, make carrier inflow greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order, flow out the above zone, inner space, and forming the local magneto-rheological fluid in the zone, inner space as mentioned above, described local magneto-rheological fluid is by the magnetic responsiveness smart material-solid-phase powder material greater than submicron order, carrier greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order constitutes
The carrier of magnetic responsiveness smart material-solid-phase powder material is generally liquid, gas or the gas-liquid mixture that has additive in the local magneto-rheological fluid described in the goal of the invention, and is best for having the liquids and gases of additive.The above liquid comprises various free from corrosion liquid, as magnetic fluid stabilising system, various mineral oil (gasoline, kerosene and diesel oil), various silicone oil, various siliceous copolymer, chlorinated hydrocarbon, hydraulic oil, water and above mixtures of liquids.The above gas comprises various non-corrosiveness gases and Compressed Gas, as air.
The carrier of magnetic responsiveness smart material-solid-phase powder material is generally the liquid that has additive in the local magneto-rheological fluid described in the goal of the invention, and described additive is various surfactants, as oleic acid, poly-ethanol, diglycol.Generally speaking the addition of surfactant is 0% to 10% of a carrier bulk, and the best is 0% to 5%.
Magnetic responsiveness smart material-solid-phase powder material is a soft magnet powder in the local magneto-rheological fluid described in the goal of the invention, is generally various carbon steel powder and powdered alloy steel such as TiCrCuMo, 17Cr-1Mo, 18Cr-2Mo, Fe-Si-Al, ε-Fe 3N, iron, cobalt, nickel and alloyed powder thereof, especially pure iron and ferrous alloy such as FeCoNi, the mixture of FeCoLi, pure cobalt and cobalt-base alloys, pure nickel and nickel-base alloy and above solid-phase powder material.
Magnetic responsiveness smart material-solid-phase powder material is the soft magnet powder that scribbles face coat in the local magneto-rheological fluid described in the goal of the invention, the various carbon steel powder of face coat and powdered alloy steel such as TiCrCuMo have been generally, 17Cr-1Mo, 18Cr-2Mo, Fe-Si-Al, ε-Fe 3N, iron, cobalt, nickel and alloyed powder thereof, especially pure iron and ferrous alloy such as FeCoNi, the mixture of FeCoLi, pure cobalt and cobalt-base alloys, pure nickel and nickel-base alloy and above solid-phase powder material.
Magnetic responsiveness smart material-solid-phase powder material is the soft magnet powder that scribbles face coat in the local magneto-rheological fluid described in the goal of the invention, and described coating is generally to be improved magnetic conductance coating such as superconduction magnetic material, rush-resisting material and be used for the insulating coating that the electrorheological fluid powder is handled.
The size of the powder of magnetic responsiveness smart material-solid-phase powder material is at 0.001 millimeter to 100 millimeters in the local magneto-rheological fluid described in the goal of the invention, stock size is 0.001 millimeter to 5 millimeters, for the liquid-carrier optimum size is 0.015 millimeter to 1 millimeter, for the carrier gas optimum size is 0.001 millimeter to 0.1 millimeter, is 0.01 millimeter to 0.5 millimeter for gas-liquid mixed carrier the best.
In the local magneto-rheological fluid described in the goal of the invention pattern of magnetic responsiveness smart material-solid-phase powder material be sheet, needle-like, ellipsoid shape and spherical with and composition thereof, be generally ellipsoid shape, spherical.
The amount of fill of magnetic responsiveness smart material-solid-phase powder material in inner space as mentioned above is 1% to 100% of entire inner space volume in the local magneto-rheological fluid described in the goal of the invention, is generally 10% to 90%, and the best is 30% to 80%.
The loading of magnetic responsiveness smart material-solid-phase powder material in inner space as mentioned above is 1% to 100% of entire inner space volume in the local magneto-rheological fluid described in the goal of the invention, be generally 10% to 90%, the best is 30% to 80%, and described amount of fill comprises formed porosity between pine when dress powder of powder.
The carrier of magnetic responsiveness smart material-solid-phase powder material is generally liquid, gas and the gas-liquid mixture that has additive in the local magneto-rheological fluid described in the goal of the invention, and is best for having the liquids and gases of additive.The above liquid comprises various free from corrosion liquid, and as the magnetic fluid stabilising system, described magnetic fluid stabilising system can be used for improving the magnetic permeability of described local strong magnetic flux fluid, to improve magnetic rheology effect.
The carrier of magnetic responsiveness smart material-solid-phase powder material is generally liquid, gas and the gas-liquid mixture that has additive in the local magneto-rheological fluid described in the goal of the invention, and is best for having the liquids and gases of additive.The above liquid comprises various free from corrosion liquid, and as the magnetic fluid stabilising system, described magnetic fluid stabilising system generally is to be made of the magnetic responsiveness smart material-solid-phase powder material of submicron order, decentralized medium and additive.Magnetic responsiveness smart material-the solid-phase powder material of submicron order is a soft magnet powder, is generally various carbon steel powder and powdered alloy steel such as TiCrCuMo, 17Cr-1Mo, 18Cr-2Mo, Fe-Si-Al, ε-Fe 3N, iron, cobalt, nickel and alloyed powder thereof, especially pure iron and ferrous alloy such as FeCoNi, the mixture of FeCoLi, pure cobalt and cobalt-base alloys, pure nickel and nickel-base alloy and above solid-phase powder material.The pattern of the magnetic responsiveness smart material-solid-phase powder material of submicron order be sheet, needle-like, ellipsoid shape and spherical with and composition thereof, be generally ellipsoid shape, spherical.The amount of the magnetic responsiveness smart material-solid-phase powder material of submicron order is 0% to 40% of a decentralized medium, and the best is 5% to 30%.Liquid, gas and gas-liquid mixture,, best for having the liquids and gases of additive.The above liquid comprises various free from corrosion liquid, various mineral oil (gasoline, kerosene and diesel oil), various silicone oil, various siliceous copolymer, chlorinated hydrocarbon, hydraulic oil, water and above mixtures of liquids.The above gas comprises various non-corrosiveness gases and Compressed Gas, as air.Described additive is various surfactants, as oleic acid, poly-ethanol, diglycol.Generally speaking the addition of surfactant is 0% to 10% of a carrier bulk, and the best is 0% to 5%.
With reference to Fig. 2, Fig. 3, formula solenoid in the 1-wherein; Formula magnetic pole one in the 2-; Formula magnetic pole two in the 3-; Formula magnetic conductor in the 4-.The outer formula magnetic pole one of 5-; The outer formula magnetic pole two of 6-; The outer formula magnetic core of 7-; The outer formula magnetism-isolating loop of 8-; The outer formula magnetic guiding loop of 9-; The outer formula solenoid of 10-.Described damping device is made of the air gap D in magnetic field and the magnetic field, when magnetic responsiveness smart material-solid-phase powder material passes through air gap D with its carrier, as long as flow direction is not parallel with the magnetic direction that is acted on, under the action of a magnetic field, magnetic responsiveness smart material-solid-phase powder material is reunited at the magnetic pole near zone in the local magneto-rheological fluid, thereby the generation magnetic rheology effect, filter A (if unidirectional is established) is established in the outlet of solid powder carrier in the local magneto-rheological fluid.
Local magneto-rheological fluid damping device described in the goal of the invention, it is made of local magneto-rheological fluid damping device and filter, described damping device is made of the air gap D in magnetic field and the magnetic field, when magnetic responsiveness smart material-solid-phase powder material passes through air gap D with its carrier, as long as flow direction is not parallel with the magnetic flux density direction that is acted on, under the action of a magnetic field, magnetic responsiveness smart material in the local magneto-rheological fluid-solid-phase powder material is reunited, generally speaking magnetic field is permanent-magnetic field, electromagnetic field, and the best is by the formed electromagnetic field of charged solenoid; Air gap D in the magnetic field generally can be arranged on charged solenoidal periphery (outer formula), also can be located at edge and the uneven direction layout of charged solenoid axis (interior formula) in the charged solenoidal pipe, the best is that edge and charged solenoid axis vertical direction are arranged (interior formula).
Local magneto-rheological fluid damping device described in the goal of the invention, it is made of local magnetorheological fluid damper and filter, described damper is made of the air gap D in magnetic field and the magnetic field, when magnetic responsiveness smart material-solid-phase powder material passes through air gap D with its carrier, as long as flow direction is not parallel with the magnetic flux density direction that is acted on, under the action of a magnetic field, magnetic responsiveness smart material in the local magneto-rheological fluid-solid-phase powder material is reunited, generally speaking magnetic field is permanent-magnetic field, electromagnetic field, and the best is by the formed electromagnetic field of charged solenoid; Air gap D in the magnetic field generally can be arranged on charged solenoidal periphery (outer formula), also can be located in the charged solenoidal pipe along arranging (interior formula) with the uneven direction of charged solenoid axis, also can be located at simultaneously in charged solenoidal periphery and the charged solenoidal pipe along and the uneven direction of charged solenoid axis arrange (hybrid), wherein be located in the charged solenoidal pipe when arranging with the uneven direction of charged solenoid axis best for along and charged solenoid axis vertical direction arrange (interior formula)
Air gap D in the magnetic field described in the local magneto-rheological fluid damping device described in the goal of the invention can be similar multistage being in series; Can be similar multistage being in parallel.
Air gap D in the magnetic field described in the local magnetorheological fluid damper described in the goal of the invention can be different types (non-similar) multistage between series connection, can be the parallel connection of different types (non-similar) between multistage.
With reference to Fig. 4, this local magneto-rheological fluid damping device structure is a local magneto-rheological fluid piston component, and it is by 30-end cap (1), 31-O shape circle, 32-filter core (1), 33-magnetic conductor (1), 34-O shape circle, 35-O shape circle, 36-O shape circle, 37-is every magnetic pressure ring (1), 38-magnetic conductor (2), and 39-is every magnetic pressure ring (2), 40-magnetic shield pipe, 41-O shape circle, 42-magnetic conductor (3), 43-O shape circle, 44-O shape circle, 45-filter core (2), 46-O shape circle, the 47-piston rod, 48-lead and sleeve pipe, 49-end cap (2), 50-trip bolt, 51-is every the magnetic shell body, and 52-solenoid and pipe support and 53-O shape circle constitute.
Uniform turnover oilhole and corresponding passage are arranged on the 30-end cap (1), by 30-end cap (1), 31-O shape circle, 32-filter core (1) and 33-magnetic conductor (1), 34-O shape circle and 51-have formed a filter cavity every the magnetic shell body.Uniform oilhole and corresponding passage are also arranged on the 42-magnetic conductor (3), and formed another filter cavity every the magnetic shell body with 43-O shape circle, 44-O shape circle, 45-filter core (2), 46-O shape circle, 49-end cap (2) and 51-.More than two cavitys go up uniform oilhole by 33-magnetic conductor (1), 38-magnetic conductor (2) and 42-magnetic conductor (3) and corresponding passage communicates.
Inner end by 33-magnetic conductor (1) and 42-magnetic conductor (3) forms magnetic pole and magnetic field air gap, and this magnetic field air gap is divided into two every magnetic pressure ring (2), 38-magnetic conductor (2) every magnetic pressure ring (1) and 39-by 37-.Adding under the action of a magnetic field, just forming two local magnetorheological fluid dampers that are in series.
The helical tube chamber of being formed by 33-magnetic conductor (1) and 42-magnetic conductor (3) simultaneously, in establish 52-solenoid and pipe support, its lead-in wire is drawn outside this device through 50-trip bolt endoporus and 47-piston rod endoporus by the interior fairlead of 42-magnetic conductor (3).
Wherein, the pass between each parts is, 49-end cap (2) is tightened and locked (also can with 49-end cap (2) and 51-every magnetic shell body cast solid, to reduce processing cost) forms assembly one every the magnetic shell body by 50-trip bolt and 51-.On 33-magnetic conductor (1), put 35-O shape circle and 40-magnetic shield pipe, again 52-solenoid and pipe support are enclosed within on the 40-magnetic shield pipe, 37-is being put into 40-magnetic shield pipe every magnetic pressure ring (1), 38-magnetic conductor (2), 39-successively every magnetic pressure ring (2), then 42-magnetic conductor (3) is enclosed pack into 33-magnetic conductor (1) and assembly thereof by 36-O shape circle and 41-O shape, thereby formed assembly two.Then assembly two is seated in assembly one by 43-O shape circle, 44-O shape circle, 45-filter core (2) and 46-O shape circle.Then 34-O shape circle, 33-magnetic conductor (1), 32-filter core (1), 31-O shape circle and 30-end cap (1) are packed into successively.
Filter described in the goal of the invention is by bearing certain pressure reduction, having the porous material filter core of certain intensity and corresponding housing to constitute, as the thermal sintering tubing and the sheet material of various metal powders and composition thereof, ceramic post sintering forming tube and sheet material.
Filter described in the goal of the invention is by bearing certain pressure reduction, having the porous material filter core of certain intensity and corresponding housing to constitute, as the thermal sintering tubing and the sheet material of various metal powders and composition thereof, ceramic post sintering forming tube and sheet material.Its filtering accuracy is 0.00001 millimeter to 0.1 millimeter, especially is 0.00001 millimeter to 0.05 millimeter, and the best is 0.001 millimeter to 0.04 millimeter.
Filter described in the goal of the invention is by bearing certain pressure reduction, there are the porous material filter core and the corresponding housing of certain intensity to constitute, as the thermal sintering tubing and the sheet material of various metal powders and composition thereof, as copper powder, iron powder, stainless steel powder, aluminium and alloyed powder thereof, above various powder reason mixture thermal sintering tubing and sheet material.
With reference to Fig. 5, this local magneto-rheological fluid damping device structure is a local magneto-rheological fluid piston component, and it is by 70-end cap (1), 71-O shape circle, 72-filter core (1), 73-is every the magnetic shell body, 74-magnetic conductor (1), 75-O shape circle, 76-O shape circle, 77-is every magnet, 78-O shape composite rim, 79-solenoid and pipe support, 80-magnetic conductor (2), 81-O shape circle, 82-O shape circle, 83-O shape circle, 84-O shape circle, 85-filter core (2), the 86-trip bolt, 87-end cap (2), 88-O shape circle, 89-O shape circle, 90-piston rod and 91-lead and sleeve pipe constitute.
Uniform turnover oilhole and corresponding passage are arranged on the 70-end cap (1), 70-end cap (1), 71-O shape circle, 72-filter core (1), 73-has formed a filter cavity every magnetic shell body and 75-O shape circle.Uniform turnover oilhole and corresponding passage are also arranged on the 87-end cap (2), 87-end cap (2), 83-O shape circle, 85-filter core (2), 88-O shape circle and 73-have formed another filter cavity every the magnetic shell body.More than two cavitys be connected by the two magnetic field air gaps that are in series.The two magnetic field air gaps that are in series are to be made of magnetic conductor 80-magnetic conductor (2) and another assembly.This assembly is drawn outside this device by 86-trip bolt lid (2) endoporus and 90-piston rod endoporus every magnet, 79-solenoid and pipe support, 81-magnetic conductor (3) and 82-O shape circle by 74-magnetic conductor (1), 76-O shape circle, 77-.
Wherein, the relation object between each parts is similar to local magneto-rheological fluid damping device structure example one (interior formula).

Claims (10)

1, a kind of method that makes greater than the magnetic responsiveness smart material-solid-phase powder material localization of submicron order is characterized in that this method is that the magnetic responsiveness smart material-solid-phase powder material greater than submicron order is limited in by in filter B and the zone, the formed inner space of magnetorheological fluid damper C (unidirectional); Or will limit greater than the magnetic responsiveness phase sensitivity material-solid-phase powder material of submicron order by in filter A, B and the zone, the formed inner space of magnetorheological fluid damper C (two-way); After the carrier of described local magneto-rheological fluid solid-phase powder material flows into zone, above-mentioned inner space, the solid-phase powder material that stores promptly and in this zone, inner space forms the local magneto-rheological fluid, separate with the carrier of this solid powder by the solid-phase powder material that stores in this zone, inner space after the filter B, carrier flows out this zone, inner space (unidirectional); During reverse flow, separate with the carrier of this solid-phase powder material by the solid-phase powder material that stores in this zone, inner space behind the filter A, carrier flows out this zone, inner space (two-way).
2,, it is characterized in that it is made of magnetorheological fluid damper C and filter B or magnetorheological fluid damper C and filter A, B as realizing the local magneto-rheological fluid damping device of the described method of claim 1; Described damper C is made of the air gap D in magnetic field and the magnetic field, when magnetic responsiveness smart material-solid-phase powder material passes through air gap D with its carrier, as long as flow direction is not parallel with the magnetic direction that is acted on, under the action of a magnetic field, magnetic responsiveness smart material-solid-phase powder material is reunited at the magnetic pole near zone in the local magneto-rheological fluid, thereby the generation magnetic rheology effect, filter B (unidirectional) is established in the outlet of solid powder carrier in the local magneto-rheological fluid; Or filter B and A (two-way) are established in the import and the outlet of solid powder carrier in the local magneto-rheological fluid; Described magnetic field is permanent-magnetic field, electromagnetic field, and the best is by the formed electromagnetic field of charged solenoid; Air gap D in the magnetic field can be arranged on charged solenoidal periphery (outer formula), also can be located in the charged solenoidal pipe along arranging (interior formula) with the uneven direction of charged solenoid axis, the best is along arranging (interior formula) with charged solenoid axis vertical direction, also can be located at the uneven direction layout of interior edge of charged solenoidal periphery and charged solenoidal pipe and charged solenoid axis simultaneously, the best is edge and charged solenoid axis vertical direction layout (interior formula) when wherein being located at the interior edge of charged solenoidal pipe with the uneven aspect of charged solenoid axis layout
3, damping device as claimed in claim 2 is characterized in that the air gap D in the described magnetic field or is similar multistage being in series; Or be that similar level is in parallel; Or be different types (non-similar) multistage between series connection, or be the parallel connection of different types (non-similar) between multistage.
4, damping device as claimed in claim 2, it is characterized in that described filter is to bear certain pressure reduction, the porous material filter core of certain intensity is arranged, its filtering accuracy is 0.00001mm-0.1mm, especially be 0.00001mm-0.05mm, the best is 0.001mm-0.04mm.
5, damping device as claimed in claim 4 is characterized in that the filter core of described filter has its corresponding certain pressure reduction that bears outward, and the housing of the porous material of certain intensity is arranged.
6, the method for solid-phase powder material localization as claimed in claim 1 is characterized in that described local magneto-rheological fluid is by constituting greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order with greater than the carrier of the magnetic responsiveness smart material-solid-phase powder material of submicron order; Described carrier is liquid, gas or the gas-liquid mixture that has additive, and best the above liquid comprises various free from corrosion liquid in order to have the liquids and gases of additive, and the above gas comprises various non-corrosiveness gases and Compressed Gas; When described carrier is when having the liquid of additive, described additive is various surfactants, and the addition of surfactant is 0% to 10% of a carrier bulk, and the best is 0% to 5%; Described solid-phase powder material is a soft magnet powder, is generally the mixture of various carbon steel powder and powdered alloy steel, especially pure iron and ferrous alloy, pure cobalt and cobalt-base alloys, pure nickel and nickel-base alloy and above-mentioned solid phase powder.
7, the method for solid-phase powder material localization as claimed in claim 6 is characterized in that described soft magnet powder scribbles face coat, and described coating is to improve magnetic conductance coating, antirust coat and be used for the insulating coating that the electrorheological fluid powder is handled.
8, the magnetic responsiveness smart material-solid-phase powder material greater than submicron order as claimed in claim 1, the size that it is characterized in that described powder is at 0.001 millimeter to 100 millimeters, stock size is 0.001 millimeter to 5 millimeters, for the liquid-carrier optimum size is 0.015 millimeter to 1 millimeter, for the carrier gas optimum size is 0.001 millimeter to 0.1 millimeter, is 0.01 millimeter to 0.5 millimeter for gas-liquid mixed carrier the best.
9, the magnetic responsiveness smart material-solid-phase powder material greater than submicron order as claimed in claim 1, the pattern that it is characterized in that powder be sheet, needle-like, ellipsoid shape and spherical with and composition thereof.
10, the amount of fill in the zone, inner space as claimed in claim, it is characterized in that its amount of fill is 1% to 100% of an entire inner space volume, be generally 10% to 90%, the best is 30% to 80%, and its amount of fill comprises formed porosity between pine when dress powder of powder.
CNB991200446A 1999-11-11 1999-11-11 Method for localizing sensitive material to magnetic-field responser-solid-phase powder material, and damping device thereof Expired - Fee Related CN1150569C (en)

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CNB991200446A CN1150569C (en) 1999-11-11 1999-11-11 Method for localizing sensitive material to magnetic-field responser-solid-phase powder material, and damping device thereof
AU12665/01A AU1266501A (en) 1999-11-11 2000-11-09 Localizing method for solid powder of magnetic induction and damping apparatus thereof
PCT/CN2000/000419 WO2001034997A1 (en) 1999-11-11 2000-11-09 Localizing method for solid powder of magnetic induction and damping apparatus thereof

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CN106733177A (en) * 2016-12-24 2017-05-31 浙江师范大学 A kind of ore separation device based on magnetic rheology effect
CN113964968A (en) * 2020-07-16 2022-01-21 江门市邦特电子电器有限公司 Permanent magnet ring, motor using permanent magnet ring, manufacturing method and die

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US5277281A (en) * 1992-06-18 1994-01-11 Lord Corporation Magnetorheological fluid dampers
CN2258553Y (en) * 1994-04-18 1997-07-30 山东建筑材料工业学院 Damping force controllable magnetic puwder vibration-damper
US5547049A (en) * 1994-05-31 1996-08-20 Lord Corporation Magnetorheological fluid composite structures
DE4433056C2 (en) * 1994-09-16 1998-01-29 Mannesmann Sachs Ag Vibration dampers for motor vehicles
CN1128846A (en) * 1995-06-23 1996-08-14 华中理工大学 Method for controlling vibration transmission rate of electric current changing damper

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CN106733177A (en) * 2016-12-24 2017-05-31 浙江师范大学 A kind of ore separation device based on magnetic rheology effect
CN106733177B (en) * 2016-12-24 2018-08-24 浙江师范大学 A kind of ore separation device based on magnetic rheology effect
CN113964968A (en) * 2020-07-16 2022-01-21 江门市邦特电子电器有限公司 Permanent magnet ring, motor using permanent magnet ring, manufacturing method and die
CN113964968B (en) * 2020-07-16 2024-03-15 江门市邦特电子电器有限公司 Permanent magnet ring, motor using same, manufacturing method and mold

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