CN108953377B - A kind of liquid magnetic composite bearing towards reusable rocket turbine pump - Google Patents
A kind of liquid magnetic composite bearing towards reusable rocket turbine pump Download PDFInfo
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- CN108953377B CN108953377B CN201810958183.6A CN201810958183A CN108953377B CN 108953377 B CN108953377 B CN 108953377B CN 201810958183 A CN201810958183 A CN 201810958183A CN 108953377 B CN108953377 B CN 108953377B
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- turbine pump
- magnetic composite
- liquid
- composite bearing
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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
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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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/03—Sliding-contact bearings for exclusively rotary movement for radial load only with tiltably-supported segments, e.g. Michell bearings
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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
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/08—Attachment of brasses, bushes or linings to the bearing housing
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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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/20—Application independent of particular apparatuses related to type of movement
- F16C2300/22—High-speed rotation
-
- 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
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The present invention provides a kind of liquid magnetic composite bearing structures towards reusable rocket turbine pump, annular bearing shell body therein is set to bearing block inner ring and the axially coupled fixation of turbine pump case, even number sector tile fragment is circumferentially laid with equidistant interval and is installed in the bearing shell body on surface by the elasticity fulcrum that can incline respectively, constitute tilting pad, inside any tilting pad circumferentially, be symmetrically embedded in a pair of of superconducting block, be set with permanent-magnetic clamp in the turbine pump shaft, at corresponding liquid magnetic composite bearing position；The present invention is to carry out cooperateing with carrying to turbine pump shafting with conduction magnetic force by dynamic pressure liquid film power, realize that low speed suspends and high speed off-load by conduction magnetic force, the main carrying field of force of high speed is formed by dynamic pressure liquid film power, solve the problems, such as that common fluid film bearing start and stop stage fretting wear is serious, it is valuable to the long-life highly reliable shafting support technology of the next-generation reusable rocket turbine pump of development.
Description
Technical field
The present invention relates to liquid rocket turbo pump shafting support technology fields, and in particular to a kind of hydrodynamic liquid film power-
Conduction magnetic force composite bearing structure, to realize that the turbine pumps military service performance objectives such as reusable, long-life, high revolving speed provide one
Kind novel bearing technology.
Background technique
Liquid rocket is that the current mankind carry out the most important delivery vehicle of space aerospace activity, is China's layout satellite information
The key technology equipment that network, building large space station etc. must be relied on for counsel.In recent years, the Long March five transmittings and high pressure afterburning follow
The breakthrough of the technologies such as ring oxyhydrogen engine has established solid material base for China's aerospace industry.But it is most advanced with the world
Level is compared, carrying capacity and in terms of we still have no small gap.At the beginning of 2018, american commerce space flight
Company Space X transmits carrying capacity up to twice or more of the Long March 5 of heavy falcon rocket, and three pieces of first-stage rocket body wholes
Success is recycled, and has greatly been shaken China's space flight industry and has been started the overdevelopment of reusable rocket in the world
Tide.The carrying capacity of rocket reflects the feed speed and turbine revolution speed of fuel system, is inherently limited by this core of bearing
Heart basic components.Active service rocket turbine pump is all made of rolling bearing as shafting support member, is passed by point or line contact form
Load is passed, stress collection neutralization fretting wear phenomenon is very serious, causes mutually to restrict between bearing service life and revolving speed, turbine
Pump performance is difficult to obtain significant enhancement.With being continuously increased for launch mission challenge from now on, passes through bearing material and improve etc
General measures meet the growth requirement of turbine pump by being increasingly difficult to.
Replacing rolling bearing easy to wear with fluid film bearing is the hot subject that astropower is competitively studied.When carrying liquid film
It will be disengaged from directly contacting after generation, between bearing and axle journal.Have benefited from without mechanical fretting wear, the service life of bearing can be big
It is big to extend.Compared to rolling bearing, fluid film bearing have outstanding dynamic performance, by reasonably design can be realized it is higher
The steady running of revolving speed.In recent years, Dezhou peasants and workers university is clear using the next-generation reusable rocket turbine pump in the U.S. as object,
Dynamic and static pressure fluid film bearing support scheme is proposed, and has carried out the verifying of the simulation test under low viscous lubricant medium.Studies have shown that liquid
The maximum deficiency of film bearing application scheme is that the fluid pressure that turbine pump itself is established under low speed is not enough to support carrying liquid film
Generation, lead to the start and stop stage still and will appear fretting wear phenomenon very serious, it cannot be guaranteed that entirely be on active service the stage it is inorganic
Tool contact.Can the problem obtain effectively solving to be related to application feasibility and the next generation of the fluid film bearing in rocket turbine pump
The research and development process of reusable rocket turbine pump.
Summary of the invention
The present invention is directed to fluid film bearing alternative solutions big, common for above-mentioned axis of rolling performance limitation not can solve turbine
The crucial application problem such as the fretting wear in start and stop stage is pumped, proposes that a kind of liquid magnetic towards reusable rocket turbine pump is compound
Bearing, to can be realized rocket turbine pump be completely on active service between stage inner bearing and axle journal without Mechanical Contact friction, and energy
High Speed Dynamics performance more more superior than rolling bearing is provided, the significant service life for extending turbine pump bearing simultaneously improves turbine
The revolving speed of pump.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of liquid magnetic composite bearing towards reusable rocket turbine pump, the liquid magnetic composite bearing is for supporting whirlpool
It is completely soaked in the working media of rocket when wheel pump shafting, work, and to riddle the working media of bearing cavity as lubrication
Medium, the structure setting of the liquid magnetic composite bearing are as follows:
Annular bearing shell body is set to bearing block inner ring and the axially coupled fixation of turbine pump case, and even number sector tile fragment is along week
To laying with equidistant interval and being installed in the bearing shell body on surface by the elasticity fulcrum that can incline respectively, tilting bush is constituted
Block, circumferentially, is symmetrically embedded in a pair of of superconducting block inside any tilting pad, in the turbine pump shaft, corresponding liquid magnetic it is compound
Permanent-magnetic clamp is set at position of bearings；
The liquid magnetic composite bearing is to generate dynamic pressure liquid in the carrying liquid film that bearing radial gap is formed by lubricant medium
Membrane forces, and by the conduction magnetic force between permanent-magnetic clamp and each superconducting block, formation is completely on active service in the stage to rocket turbine pump shafting
Collaboration carrying.
Design feature of the invention is lain also in:
The tilting pad is brass material, the micro- texture in surface that there is loading end laser processing to obtain.
Preferably, the form of the micro- texture in the surface is the round pool of 5 μm of multiple depth, 40 μm of diameter, is held in tilting pad
Area ratio/occupancy ratio on section is 25%.
The elasticity can incline the structure of fulcrum are as follows:
It is connected on bearing shell body along pin one end that bearing is arranged radially, the other end is connected in the middle part of tilting pad, described
It is arranged O-ring seal on pin, and is equipped with damping hole between bearing shell body, any tilting pad can be with corresponding pin
Can incline fulcrum, around the branch spot wobble that can incline.
It is contacted between the back side of the tilting pad and surface in bearing shell body for line.
The outer diameter of the permanent-magnetic clamp is 5mm bigger than the turbine pump spindle outer diameter of corresponding position.
The permanent-magnetic clamp is Ru-Fe-Mn's permanent-magnetic clamp, and the superconducting block is cylindrical yttrium barium copper oxide superconducting block.
Compared with the prior art, the invention has the advantages that:
1, the liquid magnetic composite bearing proposed by the present invention towards reusable rocket turbine pump by conduction magnetic force and moves
The synergistic effect of hydraulic fluid membrane forces supports turbine pump shafting.In starting and shutdown phase, turbo pump rotor system by conduction magnetic force into
Row suspension support.For conduction magnetic force because flux pinning properties have self-stabilization suspension characteristic, i.e. the rotor moment is in stable suspension
State.With the raising of revolving speed, hydrodynamic effect is gradually increased, and dynamic pressure liquid film power is in main carrying status at high speeds, and
Because the characteristics such as high rigidity and big damping guarantee the high stability of rotor-support-foundation system.The present invention solves general by introducing conduction magnetic force
The serious problem of start and stop stage fretting wear, can give full play to the excellent dynamics of fluid film bearing in logical fluid film bearing alternative solution
Characteristic and the revolving speed and carrying capacity for significantly improving turbine pump；
2, liquid magnetic composite bearing middle (center) bearing tile fragment of the invention is the structure that can incline, i.e., the fan-shaped tile fragment of embedded superconducting block can
Can inclining around elasticity, fulcrum generation is small size to be swung, and it is optimal to guarantee can to form optimal wedge shape with axle journal under any circumstance
Reynolds effect.The high stability of tilting pad structure is good, it is not easy to liquid membrane oscillation phenomenon occur, for improving rocket turbine pump
Revolving speed it is beneficial；
3, the micro- texture in surface that composite bearing tile fragment surface of the invention has laser means to obtain.The material of fan-shaped tile fragment is
Brass is a kind of non-magnetic material, and the influence to cryogenic magnetic field distribution can be ignored, and be conducive to the processing of the micro- texture of laser.
Each micro-structure can be seen as a miniature hydrodynamic pressure bearing, can not only play enhancing hydrodynamic, improve
The effect of bearing load carrying capacity can also be played the role of storing abrasive grain and impurity；
The present invention ensure that liquid magnetic composite bearing can meet in the different operation phase and carried by the technical essentials such as above-mentioned
Bearing mode based on the lower liquid film power of high speed is transitioned by the conduction magnetic force bearing mode under low speed it is required that can be realized, makes liquid
Magnetic composite bearing can satisfy the military services performance indicator such as high speed, long-life, reuse, and to developing, China next generation is repeatable to be made
There is important value with the novel shafting support technology of rocket turbine pump.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the liquid magnetic composite bearing of the reusable rocket turbine pump of the present invention；
Fig. 2 is the partial structural diagram of fan-shaped tile fragment in Fig. 1；
Fig. 3 is the operation principle schematic diagram of liquid magnetic composite bearing.
In figure, 1 bearing block；2 bearing shell bodies；3 axial screw keyholes；4 positioning pins；5 fan-shaped tile fragments；6 pins；7 damping holes；8O type
Sealing ring；9 superconducting blocks；10 end caps；11 screws；12 turbine pump shafts；13 permanent-magnetic clamps；Surface in 14 bearing shell bodies；15 tilting pads
Loading end；The 16 tilting pad back sides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
Fig. 1 to Fig. 2 is please referred to, the liquid magnetic composite bearing towards reusable rocket turbine pump of the present embodiment is a kind of
Hydrodynamic liquid film power cooperates with the bearing arrangement of carrying with conduction magnetic force, is completely soaked when for supporting turbine pump shafting, work
In the low-temperature working medium of liquid rocket, and the low-temperature working medium to riddle bearing cavity is lubricant medium, liquid magnetic is multiple
The structure setting that sympodium is held are as follows:
Annular bearing shell body 2 is set to 1 inner ring of bearing block, (only shows axis in Fig. 1 axially through axial bolts with turbine pump case
To bolt hole 3) it is connected and fixed with positioning pin 4, even number sector tile fragment 5 is circumferentially laid with equidistant interval and is passed through respectively
The elasticity fulcrum that can incline is installed in bearing shell body on surface 14, is constituted tilting pad, be can further improve liquid magnetic by tilting pad
The high stability of composite bearing.It circumferentially, is symmetrically embedded in a pair of of superconducting block 9 inside any tilting pad, and passes through end cap
10 with the fixed limit (as shown in Figure 2) of screw 11, in turbine pump shaft 12, suit permanent-magnetic clamp at corresponding liquid magnetic composite bearing position
13, the external magnetic field of excitation conduction magnetic force is provided for liquid magnetic composite bearing；
The low-temperature working medium (the liquid hydrogen liquid oxygen of supercooled state) of liquid rocket can be realized the transformation of superconducting state, and can be
Liquid film power bearing part provides essential lubricant medium, and liquid magnetic composite bearing is by lubricant medium in bearing radial gap
The carrying liquid film of formation generates dynamic pressure liquid film power, and by the conduction magnetic force between permanent-magnetic clamp 13 and each superconducting block 9, is formed to fire
The completely collaboration carrying in the military service stage of arrow turbine pump shafting.The effect of conduction magnetic force is that low speed suspends and high speed off-load, solution
The fretting wear problem in certainly common fluid film bearing start and stop stage, the effect of dynamic pressure liquid film power are the main carrying field of forces of high speed, guarantee whirlpool
The high stability of wheel pump shafting.Specifically, in the lower starting of speed and shutdown phase, fluid bearings liquid film is imitated because of dynamic pressure
It answers unobvious and cannot generate or rupture, suspension and support rotor are played the role of by conduction magnetic force at this time.With the liter of revolving speed
Height, the enhancing of hydrodynamic effect, carrying liquid film start to generate.In stable operation stage, mainly carried by dynamic pressure liquid film power,
Conduction magnetic force plays the role of off-load.
In specific implementation, corresponding structure setting also includes:
Tilting pad is brass material, and brass is non-magnetic material, and the influence to cryogenic magnetic field distribution can be ignored, with drop
The low influence to Distribution of Magnetic Field.
The micro- texture in surface that there is the loading end of tilting pad laser processing to obtain, the form of the micro- texture in surface are multiple depths
5 μm of degree, 40 μm of diameter of round pool, the area ratio/occupancy ratio on tilting pad loading end 15 are 25%.Inside superconductor
Magnetic flux hot activation campaign, pinned magnetic flux beam firmly can jump according to certain probability, and conduction magnetic force can decline therewith
Subtract.In composite bearing, due to liquid film shearing fuel factor participation, magnetic force relaxation phenomenon is more significant, conduction magnetic force it is effective
Therefore carrying range can accelerate to reduce.To guarantee that the conduction magnetic force decayed by this time-varying carrying abrasion smoothly transits to fluid liquid
Bearing mode based on membrane forces prepares some surface micro-structures in the loading end of tilting pad by laser processing, enhances fluid
Dynamic pressure effect shifts to an earlier date liquid film generation, guarantees the safe and reliable work of composite bearing.
Elasticity can incline the structure of fulcrum are as follows:
It is connected on bearing shell body 2 along 6 one end of pin that bearing is arranged radially, the other end is connected in the middle part of tilting pad, pin
It is arranged O-ring seal 8 on column 6, and is equipped with damping hole 7 between bearing shell body 2, any tilting pad can be with corresponding pin
6 slightly swing for the fulcrum that can incline, around the fulcrum that can incline to form optimal wedge shape, and the effect of damping hole 7 is that enhancing swings stability.
As a preferred scheme, the diameter at the tilting pad back side 16 should be set as being slightly less than surface 14 in bearing shell body
Diameter, so that the contact form between the tilting pad back side 16 and surface 14 in bearing shell body contacts for line, it is ensured that tilting pad
Flexible swinging.
In the present embodiment, the cornerite of tilting pad is 48 °, and the position of the fulcrum angle beta of tilting pad is 44 °, to be formed
Carry wedge shape dynamic pressure liquid film required for shaft 8.
In the present embodiment, permanent-magnetic clamp 13 uses diametrical magnetization mode, and the outer diameter of permanent-magnetic clamp 13 is arranged than corresponding position
The big 5mm of 12 outer diameter of turbine pump shaft, it is ensured that the external magnetic field gradient that superconducting block 9 captures is larger.
Wherein, permanent-magnetic clamp 13 is Ru-Fe-Mn's permanent-magnetic clamp, and superconducting block 9 is cylindrical yttrium barium copper oxide superconducting block, and each superconduction
Block 9 with a thickness of 5mm and be single domain superconductor.
Referring to figure 3., state from left to right is illustrated successively are as follows: low speed, carrying liquid film do not generate --- carrying liquid film is opened
Begin generate --- high speed, carrying liquid film account for it is leading, arrow a be cryogenic magnetic field, arrow b be flow field, be from bearing be directed toward axle journal.
Liquid magnetic composite bearing is fully immersed in the low-temperature working medium of liquid rocket when working, on the one hand low-temperature working medium can make
It obtains superconducting block 9 and enters superconducting state formation super-conductive magnetic suspension power, on the other hand provide lubricant medium to carry the generation of liquid film.Its work
Make principle are as follows:
In the start and stop stage, since the revolving speed of rotor is lower, the small―gap suture between bearing and axle journal is not enough to generate liquid carrying
Film causes to carry liquid-sheet disintegration, carries turbo pump rotor system by super-conductive magnetic suspension power；With the raising of revolving speed, hydrodynamic
Effect gradually increases, and carrying liquid film starts to generate, but conduction magnetic force gradually declines due tos revolving speed increases, liquid film shears fuel factor etc.
Subtract；When reaching stationary operational phase, liquid film power is in leading position in carrying system, and the conduction magnetic force after decaying, which plays, to be subtracted
Load effect, the good kinetics of liquid film power can guarantee that turbine pump shafting is stable, reliably operated.Tilting pad loading end
Micro-structure on 1516 plays the role of enhancing hydrodynamic effect, and preceding reality can not effectively be carried by guaranteeing to decay in conduction magnetic force
The generation of liquid film is now carried, therefore indispensable.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (7)
1. a kind of liquid magnetic composite bearing towards reusable rocket turbine pump, the liquid magnetic composite bearing is for supporting turbine
It is completely soaked in the working media of rocket when pump shaft system, work, and is situated between with riddling the working media of bearing cavity as lubrication
Matter, it is characterized in that the structure setting of the liquid magnetic composite bearing are as follows:
Annular bearing shell body (2) is set to bearing block (1) inner ring and the axially coupled fixation of turbine pump case, even number sector tile fragment (5)
Circumferentially lays and be installed in the bearing shell body on surface (14) by the elasticity fulcrum that can incline respectively, structure with equidistant interval
At tilting pad, a pair of of superconducting block (9), the turbine pump shaft (12) circumferentially, are symmetrically embedded in inside any tilting pad
Permanent-magnetic clamp (13) are set at upper, corresponding liquid magnetic composite bearing position；
The liquid magnetic composite bearing is to generate dynamic pressure liquid film power in the carrying liquid film that bearing radial gap is formed by lubricant medium,
And by the conduction magnetic force between permanent-magnetic clamp (13) and each superconducting block (9), formation is completely on active service the stage to rocket turbine pump shafting
Interior collaboration carrying.
2. the liquid magnetic composite bearing according to claim 1 towards reusable rocket turbine pump, it is characterized in that: described
Tilting pad is brass material, the micro- texture in surface that there is loading end laser processing to obtain.
3. the liquid magnetic composite bearing according to claim 2 towards reusable rocket turbine pump, it is characterized in that: described
The form of the micro- texture in surface is the round pool of 5 μm of multiple depth, 40 μm of diameter, and the area on tilting pad loading end (15) occupies
Rate is 25%.
4. the liquid magnetic composite bearing according to claim 1 towards reusable rocket turbine pump, it is characterized in that described
Elasticity can incline the structure of fulcrum are as follows:
It is connected on bearing shell body (2) along pin (6) one end that bearing is arranged radially, the other end is connected in the middle part of tilting pad, institute
It states and is arranged on pin (6) O-ring seal (8), and be equipped with damping hole (7) between bearing shell body (2), any tilting pad can
With corresponding pin (6) for the fulcrum that can incline, around the branch spot wobble that can incline.
5. the liquid magnetic composite bearing according to claim 1 or 4 towards reusable rocket turbine pump, it is characterized in that:
The tilting pad back side (16) with contact in bearing shell body between surface (14) for line.
6. the liquid magnetic composite bearing according to claim 1 towards reusable rocket turbine pump, it is characterized in that: described
The outer diameter of permanent-magnetic clamp (13) is 5mm bigger than turbine pump shaft (12) outer diameter of corresponding position.
7. the liquid magnetic composite bearing according to claim 1 or 6 towards reusable rocket turbine pump, it is characterized in that:
The permanent-magnetic clamp (13) is Ru-Fe-Mn's permanent-magnetic clamp, and the superconducting block (9) is cylindrical yttrium barium copper oxide superconducting block.
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| CN201810958183.6A CN108953377B (en) | 2018-08-22 | 2018-08-22 | A kind of liquid magnetic composite bearing towards reusable rocket turbine pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810958183.6A CN108953377B (en) | 2018-08-22 | 2018-08-22 | A kind of liquid magnetic composite bearing towards reusable rocket turbine pump |
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| CN108953377A CN108953377A (en) | 2018-12-07 |
| CN108953377B true CN108953377B (en) | 2019-11-08 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707736B (en) * | 2019-02-28 | 2020-08-04 | 武汉理工大学 | Magnetic-hydraulic composite tilting pad radial bearing based on Halbach array |
| CN112065867A (en) * | 2020-09-15 | 2020-12-11 | 温州职业技术学院 | Automatic assembling device for inner ring and outer ring of high-speed bearing |
| CN113048150B (en) * | 2021-02-18 | 2023-09-26 | 武汉理工大学 | Magnetic gradient and array arrangement large-bearing magnetic liquid double-floating radial bearing |
| CN115823009B (en) * | 2022-11-22 | 2023-07-14 | 合肥工业大学 | Self-adaptive superconducting magnetic-hydraulic double-floating bearing with elastic bearing surface |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5652623A (en) * | 1979-10-08 | 1981-05-11 | Nippon Seiko Kk | Composite bearing utilizing magnetic force and dynamic pressure in combination |
| JPS5844415A (en) * | 1982-08-20 | 1983-03-15 | Hitachi Ltd | Rotary mirror optical deflector |
| JPH0814255A (en) * | 1994-06-30 | 1996-01-16 | Canon Inc | Composite bearing device |
| DE60209117D1 (en) * | 2001-06-06 | 2006-04-20 | Capital Formation Inc | SHAFT BEARING ARRANGEMENT |
| JP4597152B2 (en) * | 2007-02-19 | 2010-12-15 | 株式会社日立エンジニアリング・アンド・サービス | Pad type bearing device and horizontal axis turbine |
| CN106369050B (en) * | 2016-09-13 | 2018-11-09 | 安徽工程大学 | A kind of magnetic suspension aero dynamic bearing |
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