CN105864205A - Method for oil filtering through full-band working condition self-adaptive filtering, electrification and rotating magnetic field - Google Patents
Method for oil filtering through full-band working condition self-adaptive filtering, electrification and rotating magnetic field Download PDFInfo
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- CN105864205A CN105864205A CN201610315698.5A CN201610315698A CN105864205A CN 105864205 A CN105864205 A CN 105864205A CN 201610315698 A CN201610315698 A CN 201610315698A CN 105864205 A CN105864205 A CN 105864205A
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- oil
- module
- filter
- solenoid
- pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/615—Filtering means
Abstract
The invention relates to a method for oil filtering through full-band working condition self-adaptive filtering, electrification and a rotating magnetic field. According to the method, pressure/flow pulsation of hydraulic oil is attenuated by a filter which is a full-band working condition self-adaptive filter; solid particulates are separated through a U-shaped particulate separation module, so that the solid particulates in oil liquid are made to move towards a tube wall and flow back to an oil tank after entering an oil return cylinder through an oil inlet tube of the oil return cylinder; oil liquid containing trace small particle size particulates at the center of a pipeline enters an inner cylinder through an oil inlet tube of the inner cylinder to be subjected to high-precision filtering, and therefore the service life of a filter element is prolonged; oil liquid entering the oil inlet tube of the inner cylinder flows into a spiral channel of the inner cylinder in a tangential direction inflowing mode, the wall of the inner cylinder is used as the filter element, filter liquid flows close to the filter element under the action of centrifugal force, the filter liquid is parallel to the surface of the filter element to quickly flow, and the filtered hydraulic oil flows into an outer cylinder by being perpendicular to the direction of the surface of the filter element; and polluted particulates deposited at the bottom of the inner cylinder can be discharged to the oil return cylinder through an electrically-controlled check valve regularly, and the service life of the filter element is prolonged.
Description
[technical field]
The present invention relates to a kind of hydraulic oil filtering method, be specifically related to one full frequency band operating mode self adaptation
Filtering, electrification and the oil strain method of rotating excitation field, belong to technical field of hydraulic equipment.
[background technology]
Statistics both domestic and external show, the fault of hydraulic system about 70%~85% is due to oil
Liquid pollution causes.Solid particle is then the pollutant the most universal in oil contamination, damaging effect is maximum.
The hydraulic system fault caused by solid grain contamination accounts for the 70% of gross contamination fault.In hydraulic system
In particulate pollutant in fluid, metal filings accounting is between 20%~70%.Adopt an effective measure
Filter the solid grain contamination in fluid, be the key of Pollution Control in Hydraulic System, be also system peace
The Reliable guarantee of row for the national games.
Filter is the key element that hydraulic system filters solid grain contamination.Solid in hydraulic oil
Particulate pollutant, outside the precipitable a part of larger particles of oil removal box, filters mainly by oil-filtering apparatus.
Especially high pressure filtering device, is mainly used to filter flow direction control valve and the hydraulic oil of hydraulic cylinder, to protect
Protect the Hydraulic Elements of this kind of contamination resistance difference, therefore the cleannes of hydraulic oil are required higher.
But, the high pressure filter that existing hydraulic system uses has the disadvantage that (1) all kinds of liquid
The cleannes of fluid are required different by pressure element, and the size of the solid particle in fluid is the most each
Differ, need for this multiple dissimilar wave filter to be installed, thus at the diverse location of hydraulic system
Bring cost and the problem installing complexity;(2) filter in hydraulic system mainly uses filter cake
Filter type, during filtration, filtrate is perpendicular to filter element surface flowing, and trapped solid particle is formed
Filter cake progressive additive, the rate of filtration is gradually reduced the most therewith until filtrate stops flowing out, and reduces
The service life of filtering element.
Therefore, for solve above-mentioned technical problem, a kind of innovation of necessary offer use full frequency band operating mode
The oil strain method of adaptive-filtering, electrification and rotating excitation field, to overcome described defect of the prior art.
[summary of the invention]
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of strainability good, adapt to
Property and integration high, service life length by full frequency band operating mode adaptive-filtering, electrification and rotating excitation field
Oil strain method.
For achieving the above object, the technical scheme that the present invention takes is: filter by full frequency band operating mode self adaptation
The oil strain method of ripple, electrification and rotating excitation field, it uses a kind of oil filter, this oil filter include base plate,
Wave filter, U-shaped separation of particles module, oil returning tube, inner core, helical flow path, filter element, outer barrel and
End cap;Wherein, described wave filter, U-shaped separation of particles module, oil returning tube, outer barrel are sequentially placed into the end
On plate;Described wave filter include input pipe, shell, outlet tube, elastic thin-wall, H mode filter with
And cascaded H mode filter;Wherein, described input pipe is connected to one end of shell, itself and a hydraulic oil
Import is docked;Described outlet tube is connected to the other end of shell, and itself and U-shaped separation of particles module are docked;
Described elastic thin-wall is installed in shell along the radial direction of shell;Described input pipe, outlet tube and Thin Elastic
Wall is collectively forming a c-type cavity volume wave filter;Some tapers are uniformly had in the axial direction of described elastic thin-wall
Structure changes damping hole;Described taper structure changes damping hole is made up of cone shaped elastic damping hole pipe and slot apertures;
Resonance series cavity volume I and parallel resonance cavity volume is formed between described elastic thin-wall and shell;Described string
Ally the communists the shake outside of cavity volume I sets a resonance series cavity volume II, described resonance series cavity volume I and series connection altogether
Shake and insert pipe connection by the taper of some uniform arrangements between cavity volume II;Described H mode filter is positioned at
In parallel resonance cavity volume, it is connected with taper structure changes damping hole;Described cascaded H mode filter position
In resonance series cavity volume I and resonance series cavity volume II, it is also connected with taper structure changes damping hole;
Described H mode filter and cascaded H mode filter are axially symmetrical set, and form connection in series-parallel H type
Wave filter;Described U-shaped separation of particles module includes a U-tube, and U-tube is sequentially installed with electrification
Module, separation module, the first adsorption module, rotating excitation field are centrifuged module, the second adsorption module and disappear
Magnetic module;The top of described U-shaped separation of particles module and oil returning tube is connected by an oil returning tube oil inlet pipe;
Described inner core is placed in outer barrel, if it is installed on end cap by a top board and bolt stem;Described spiral shell
Eddy flow road is contained in inner core, is connected by an inner core oil inlet pipe between itself and U-shaped separation of particles module;
Described inner core oil inlet pipe is positioned at oil returning tube oil inlet pipe, and extends into the central authorities of U-shaped separation of particles module,
Its diameter is less than oil returning tube oil inlet pipe diameter, and is coaxially disposed with oil returning tube oil inlet pipe;Described filter element sets
Putting on the inwall of inner core, its precision is 1-5 micron;The bottom of said tub is provided with a hydraulic oil and goes out
Hydraulic fluid port;
It comprises the steps:
1), the fluid in fluid pressure line passes through wave filter, height in filter attenuation hydraulic system, in,
The fluctuation pressure of low-frequency range, and suppression flowed fluctuation;
2), backflow force feed enters the electrification module of U-shaped separation of particles module, makes the granule in fluid
Material is charged, delivers to separation module afterwards;
3), the charged corpuscle in fluid is made to be polymerized to tube wall under the effect of external force by segregation apparatus,
The first adsorbent equipment is delivered in oil return afterwards;
4), by the magnetic polymeric microgranule in the first adsorption module absorption oil return, rotation is delivered in oil return afterwards
Turn magnetic field and be centrifuged module;
5), rotating excitation field is centrifuged module and utilizes rotating excitation field to separate unadsorbed magnetic microparticles, returns afterwards
The second adsorption module delivered to by oil;
6), the magnetic polymeric microgranule in the second adsorption module second adsorption oil return;
7), magnetic particle magnetic is eliminated by demagnetization module;
8), the fluid of the most U-shaped separation of particles module near-wall is entered back by oil returning tube oil inlet pipe
Being back to fuel tank after oil cylinder, the fluid of the pipeline center containing trace small particle microgranule is then entered by inner core
Oil pipe enters inner core and carries out high-precision filtration;
9), the fluid carrying small particle microgranule flows into the helical flow path of inner core in the way of tangential influent stream,
Fluid is close to filter core flow under the influence of centrifugal force, and carries out high-precision filtration;
10), the fluid after high-precision filtration enters urceolus, and fuel-displaced by the hydraulic oil bottom urceolus
Mouth is discharged.
The oil strain method by full frequency band operating mode adaptive-filtering, electrification and rotating excitation field of the present invention enters one
Step is: the axis of described input pipe and outlet tube is the most on the same axis;Described taper structure changes damps
Opening wider place in hole is positioned at resonance series cavity volume I and parallel resonance cavity volume, and its taper angle is 10 °;
The Young's modulus of described taper structure changes damping hole cone shaped elastic damping hole pipe is than the Young of elastic thin-wall
Modulus wants big, can be with change in fluid pressure stretching or compression;The Young's modulus of slot apertures hinders than cone shaped elastic
The Young's modulus of Buddhist nun hole pipe wants big, can be with fluid opened by pressure or closedown;Tube opening is inserted in described taper
Wider place is positioned at resonance series cavity volume II, and its taper angle is 10 °;Pipe and taper are inserted in described taper
Mutually stagger in the position of structure changes damping hole.
The oil strain method by full frequency band operating mode adaptive-filtering, electrification and rotating excitation field of the present invention enters one
Step is: described electrification module includes some electrodes and an electrode controller;Described some electrodes are installed
In U-tube, it is respectively connecting to electrode controller.
The oil strain method by full frequency band operating mode adaptive-filtering, electrification and rotating excitation field of the present invention enters one
Step is: described separation module uses uniform magnetic field separation module, and this uniform magnetic field separation module includes aluminum
Matter pipeline, two magnetic poles and magnetic pole controller;Wherein, said two magnetic pole is separately positioned on aluminum matter
On pipeline, the opposite polarity of these two magnetic poles, and in being oppositely arranged;Said two magnetic pole is the most electrically
It is connected on magnetic pole controller.
The oil strain method by full frequency band operating mode adaptive-filtering, electrification and rotating excitation field of the present invention enters one
Step is: described separation module uses rotating excitation field separation module, and this rotating excitation field separation module includes aluminum
Matter pipeline, iron shell, three-phase symmetric winding and three-phase symmetrical current module;Described three-phase symmetrical
Winding is wound on outside aluminum matter pipeline;Described iron shell is coated on aluminum matter pipeline;Described three-phase symmetrical electricity
Flow module connects described three-phase symmetric winding.
The oil strain method by full frequency band operating mode adaptive-filtering, electrification and rotating excitation field of the present invention enters one
Step is: described separation module uses helical pipe magnetic field separation module, this helical pipe magnetic field separation mould
Block includes aluminum matter helical pipe, solenoid and solenoid control circuit;Wherein, described aluminum matter spiral
Pipeline is arranged in solenoid;Described solenoid and solenoid control circuit are electrically connected with.
The oil strain method by full frequency band operating mode adaptive-filtering, electrification and rotating excitation field of the present invention enters one
Step is: described first adsorption module and second is inhaled adsorption module and used homopolarity adjacent type absorbing ring, and this is same
The most adjacent type absorbing ring includes that aluminium ring shape pipeline, forward solenoid, reverse solenoid and irony are led
Magnetic cap;Described forward solenoid and reverse solenoid are respectively arranged in aluminium ring shape pipeline, Liang Zhetong
There is electric current in opposite direction so that forward solenoid and reverse solenoid adjacent produce like pole;
Described irony magnetic conduction cap is arranged on the inwall of aluminium ring shape pipeline, and it is positioned at forward solenoid with reverse
Solenoid adjacent and forward solenoid and the intermediate point of reverse solenoid axis.
The oil strain method by full frequency band operating mode adaptive-filtering, electrification and rotating excitation field of the present invention enters one
Step is: described first adsorption module and second is inhaled adsorption module and used the adjacent type of homopolarity of charged hammer to inhale
Follower ring, the homopolarity adjacent type absorbing ring of this charged hammer include aluminium ring shape pipeline, forward solenoid,
Reverse solenoid, irony magnetic conduction cap, dividing plate, electric shock hammer and electric magnet;Described forward solenoid and
Reverse solenoid is respectively arranged in aluminium ring shape pipeline, and both are connected with electric current in opposite direction so that
Forward solenoid and reverse solenoid adjacent produce like pole;Described irony magnetic conduction cap is arranged in aluminum
On the inwall of matter circulating line, it is positioned at forward solenoid and reverse solenoid adjacent and forward
Solenoid and the intermediate point of reverse solenoid axis;Described dividing plate is positioned at forward solenoid and reverse helical
Between pipe;Described electric shock hammer and electric magnet are between dividing plate;Described electric magnet connects and can promote electricity
Hammer, makes electric shock hammer tap aluminium ring shape inner-walls of duct.
The oil strain method by full frequency band operating mode adaptive-filtering, electrification and rotating excitation field of the present invention enters one
Step is: described rotating excitation field be centrifuged module include aluminum matter pipeline, iron shell, three-phase symmetric winding,
Flange and three-phase symmetrical current module;Described three-phase symmetric winding is wound on outside aluminum matter pipeline;Described ferrum
Matter shell is coated on aluminum matter pipeline;Described flange welding is at the two ends of aluminum matter pipeline;Described three relative
Current module is claimed to connect described three-phase symmetric winding.
The oil strain method by full frequency band operating mode adaptive-filtering, electrification and rotating excitation field of the present invention is also
For: the bottom of described oil returning tube is provided with an overflow valve, is provided with an automatically controlled set screw bottom this overflow valve;
Described overflow valve is provided with an oil drain out, and this oil drain out is connected to a fuel tank by pipeline;Described inner core
Bottom be rounding mesa-shaped, it is connected by an inner core oil exit pipe and oil returning tube, and inner core oil exit pipe sets
There is an automatically controlled check-valves;The center upright of described inner core is provided with a hollow cylinder, the top of hollow cylinder
Being provided with pressure difference indicator, this pressure difference indicator is installed on end cap;Described inner core oil inlet pipe and spiral flow
The tangent connection in road.
Compared with prior art, there is advantages that
1. pulsed by the pressure/flow of filter attenuation hydraulic oil, make filter element not occur
Vibration, to improve strainability;Hydraulic oil realizes dividing of solid particle in U-shaped separation of particles module
From, make the solid particle in fluid to vessel wall motion, at U-shaped separation of particles module outlet, rich in
The fluid of the near-wall of solid particle is back to fuel tank after entering oil returning tube by oil returning tube oil inlet pipe,
The only fluid of the pipeline center containing trace small particle microgranule is then entered by inner core oil inlet pipe entrance inner core
Row high-precision filtration, improves the service life of filter element, reduces filtering cost and complexity;Enter
The fluid of inner core oil inlet pipe flows into the helical flow path of inner core in the way of tangential influent stream, and inner tube wall is filter
Core, then filtrate is close to filter core flow under the influence of centrifugal force, and the surface that filtrate is parallel to filter element is quick
Flowing, the hydraulic oil after filtration is then perpendicular to cartridge surface direction and flows out to urceolus, and this cross flows through
The microgranule of cartridge surface is implemented to sweep stream effect by filter mode, it is suppressed that the increase of filter cake thickness, is deposited on
Pollution granule bottom inner core regularly can be discharged to oil returning tube by automatically controlled check-valves, thus improves filter element
Service life.
2. by controlling the temperature of hydraulic oil and making the particulate matter band in fluid to electrode applying voltage
Electropolymerization, and promote colloidal particles decomposition to melt;Efficient absorption is formed by adsorption module;Utilize rotation
Turn magnetic field " separated " and gather near-wall by the molecule in fluid, capture with adsorbent equipment
Molecule;Avoid endangering Hydraulic Elements to residual particles demagnetization by degaussing gear, so that fluid
Middle solid particle is gathered into bulky grain and moves to near-wall.
3. the generation of non-uniform magnetic-field that magnetization needs, need multipair forward and reverse coil to and by different greatly
Little electric current, and current values can numeral setting online.
[accompanying drawing explanation]
Fig. 1 is use full frequency band operating mode adaptive-filtering, electrification and the oil filter of rotating excitation field of the present invention
Structural representation.
Fig. 2 is the structural representation of the wave filter in Fig. 1.
Fig. 3 is the profile in Fig. 1 along A-A.
Fig. 4 is H mode filter schematic diagram in Fig. 3.
Fig. 5 is cascaded H mode filter schematic diagram in Fig. 3.
Fig. 6 is H mode filter and cascaded H mode filter frequency characteristic constitutional diagram.Wherein, solid line is
Cascaded H mode filter frequency characteristic.
Fig. 7 is connection in series-parallel H mode filter frequency characteristic figure.
Fig. 8 is the structural representation of c-type cavity volume wave filter.
Fig. 9 is the cross sectional representation of elastic thin-wall.
Figure 10 is the schematic diagram of taper structure changes damping hole in Fig. 2.
Figure 10 (a) to Figure 10 (c) is the working state figure of taper structure changes damping hole.
Figure 11 is the schematic diagram of the U-shaped separation of particles module in Fig. 1.
Figure 12 is the structural representation of the electrification module in Figure 11.
Figure 13 be the separation module in Figure 11 be the structural representation of uniform magnetic field separation module.
Figure 14 be the separation module in Figure 11 be the structural representation of rotating excitation field separation module.
Figure 15 be the separation module in Figure 11 be the structural representation of helical pipe magnetic field separation module.
Figure 16 be the first adsorption module (the second adsorption module) in Figure 11 be homopolarity adjacent type absorption
The structural representation of ring.
Figure 17 is the homopolarity that the first adsorption module (the second adsorption module) is charged hammer in Figure 11
The structural representation of adjacent type absorbing ring.
Figure 18 is the structural representation that the rotating excitation field in Figure 11 is centrifuged module.
[detailed description of the invention]
Refer to shown in Figure of description 1 to accompanying drawing 18, the present invention be one full frequency band operating mode from
The oil filter of adaptive filtering, electrification and rotating excitation field, it is divided by base plate 6, wave filter 8, U-shaped microgranule
From module 3, oil returning tube 7, inner core 15, helical flow path 17, filter element 18, outer barrel 19 and end cap
Several parts compositions such as 25.Wherein, described wave filter 8, U-shaped separation of particles module 2, oil returning tube 7,
Outer barrel 19 is sequentially placed on base plate 6.
Described wave filter 8 for hydraulic oil is inputted, and can decay in hydraulic system high, medium and low
The fluctuation pressure of frequency range, and suppression flowed fluctuation.Described wave filter 8 by input pipe 81, shell 88,
Outlet tube 89, elastic thin-wall 87, H mode filter 812 and cascaded H mode filter 813 etc. are several
Part composition.
Wherein, described input pipe 81 is connected to one end of shell 89, and itself and a hydraulic oil inlet 1 are right
Connect;Described outlet tube 811 is connected to the other end of shell 89, itself and U-shaped separation of particles module 3
Docking.Described elastic thin-wall 87 is installed in shell 88 along the radial direction of shell.Described input pipe 81
With the axis of outlet tube 89 the most on the same axis, the filter effect of more than 10% can so be improved.
Described input pipe 81, outlet tube 89 and elastic thin-wall 87 are collectively forming a c-type cavity volume wave filter,
Thus hydraulic system high frequency pressure pulsations of decaying.The filter transmission obtained after processing by lumped-parameter method
Coefficient is:
Velocity of sound L in a mediumVC-type cavity volume length SVC-type cavity volume volume Z characteristic
Impedance
γ transmission coefficient f pressure oscillation frequency SIInput pipe cross-sectional area.
From above formula, c-type wave filter is similar with the electric capacity effect in circuit.The pressure of different frequency
When pulsating wave is by this wave filter, transmission coefficient is different with frequency.Frequency is the highest, then transmission coefficient
The least, this shows that the pressure pulse wave of high frequency is decayed the most severe when device after filtering, thus plays
Eliminate the effect of high frequency pressure pulsations.
The design principle of described c-type cavity volume wave filter is as follows: when in pipeline, the fluctuating frequency of pressure is higher,
The pressure of fluctuation acts on convection cell on fluid and produces pinch effect.When the flow of change passes through input pipe
When entering c-type cavity volume, liquid stream exceedes average discharge, and the cavity volume of expansion can absorb unnecessary liquid stream, and
Liquid stream, the energy thus absorption pressure is pulsed is released when less than average discharge.
Described elastic thin-wall 87 weakens hydraulic system medium-high frequency pressure fluctuation by being forced to mechanical vibration.
The elastic thin-wall natural frequency obtained after processing by lumped-parameter method is:
K elastic thin-walled structures coefficient h elastic thin-wall thickness R elastic thin-wall radius
The mass density of the Young's modulus ρ elastic thin-wall of E elastic thin-wall
The Poisson's ratio of the current-carrying factor mu elastic thin-wall of η elastic thin-wall.
Substitute into actual parameter, above formula is carried out simulation analysis it is found that elastic thin-wall 87 intrinsic
Frequency is generally high than the natural frequency of H mode filter, and its attenuation band is also wide than H mode filter.
In relatively wide frequency band range, elastic thin-wall has good attenuating to pressure fluctuation.With
Time, the elastic thin-wall radius in the filter construction of the present invention is bigger and relatively thin, and its natural frequency is more leaned on
Nearly Mid Frequency, can realize the effective attenuation to the medium-high frequency pressure fluctuation in hydraulic system.
The design principle of described elastic thin-wall 87 is as follows: when producing intermediate frequency pressure fluctuation in pipeline, c-type
Cavity volume is more weak to the damping capacity of pressure oscillation, flows into the periodically pulsing pressure of wave filter c-type cavity volume
Continuous action is on elastic thin-wall 87.Elastic thin-wall then does periodic vibration by the frequency of fluctuation pressure,
This forced vibration consumes the pressure fluctuation energy of fluid, thus realizes the filtering of Mid Frequency pressure.By void
Merit principle understands, and elastic thin-wall consumes gesture during ability and its forced vibration of fluid pulsation pressure energy
Can be directly related with kinetic energy sum, in order to improve Mid Frequency filtering performance, the radial design of elastic thin-wall
For much larger than pipe radius, and the thickness of thin-walled is less, and representative value is less than 0.1mm.
Further, between described elastic thin-wall 87 and shell 88 formed resonance series cavity volume I84 with
And parallel resonance cavity volume 85.The outside of described resonance series cavity volume I84 sets a resonance series cavity volume II83,
By the taper of some uniform arrangements between described resonance series cavity volume I84 and resonance series cavity volume II83
Inserting pipe 82 to connect, described taper is inserted the wider place of pipe 82 opening and is positioned at resonance series cavity volume II83,
Its taper angle is 10 °.The resistance of some taper structure changes is uniformly had in the axial direction of described elastic thin-wall 87
Buddhist nun hole 86, taper structure changes damping hole 86 and taper are inserted the position of pipe 82 and are mutually staggered.
Described H mode filter 812 is positioned at parallel resonance cavity volume 85, and itself and taper structure changes damp
Hole 86 is connected.The wider place of described taper structure changes damping hole 86 opening is positioned at resonance series cavity volume I84
With in parallel resonance cavity volume 85, its taper angle is 10 °.The filter obtained after processing by lumped-parameter method
Ripple device natural angular frequency is:
Velocity of sound L in a medium1The long D of damping hole1Damping hole diameter
L2Parallel resonance cavity volume height D2Parallel resonance cavity volume diameter.
Described cascaded H mode filter 813 is positioned at resonance series cavity volume I84 and resonance series cavity volume II83
In, it is also connected with taper structure changes damping hole 86.After processing by lumped-parameter method, cascaded H
Two natural angular frequencies of mode filter 813 are:
Velocity of sound l in a medium1The long d of damping hole1Damping hole diameter l3Resonance pipe range
d3Resonantron diameter l2Resonance series cavity volume 1 height d2Resonance series cavity volume 1 diameter
l4Resonance series cavity volume 2 height d4Resonance series cavity volume 2 diameter.
Described H mode filter 812 and cascaded H mode filter 813 are axially symmetrical set, and form
Connection in series-parallel H mode filter, for broadening frequency filtering scope and make overall structure more compact.The present invention
Circumferentially interface distributions multiple connection in series-parallel H mode filters (only depicting 2 in figure), each other it
Between separate with dividing plate 20, the resonance bands of these multiple wave filter is different, can after combining
Cover whole medium and low frequency filtering frequency range, it is achieved the entire spectrum filtering of medium and low frequency section comprehensively.
All can be found by Fig. 6 H mode filter and cascaded H mode filter frequency characteristic and formula, series connection
H mode filter has 2 natural angular frequencies, and at crest, filter effect is preferable, then base at trough
Originally there is no filter effect;H mode filter has 1 natural angular frequency, equally filter effect at crest
Preferably, at trough, the most substantially do not has filter effect;Select suitable filter parameter, make H type
The natural angular frequency of wave filter just falls between 2 natural angular frequencies of cascaded H mode filter, as
Shown in Fig. 7, in certain frequency range, both defined the natural reonant frequency peak value of 3 next-door neighbours,
In this frequency range, no matter the fluctuating frequency of pressure is at crest or all can guarantee that at trough preferably
Filter effect.The bank of filters that multiple connection in series-parallel H mode filters are constituted both can cover whole medium and low frequency
Section, it is achieved the entire spectrum filtering of medium and low frequency section.
Further, described taper structure changes damping hole 86 is by cone shaped elastic damping hole pipe 16 and slot apertures
15 compositions, taper narrow end is opened on elastic thin-wall 87.The wherein poplar of cone shaped elastic damping hole pipe 16
The Young's modulus of family name's modular ratio elastic thin-wall 87 wants big, can be with change in fluid pressure stretching or compression;
The Young's modulus of slot apertures 15 is bigger than the Young's modulus of cone shaped elastic damping hole pipe 16, can be with fluid pressure
Power is turned on and off.Therefore when the fluctuating frequency of pressure falls at high band, c-type cavity volume filter construction rises
Filter action, cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Figure 10 (a) state;And work as
Ripple frequency falls when Mid Frequency, and filter construction becomes c-type cavity volume filter construction and elastic thin-wall
87 filter structures concur, and cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Figure 10 (a)
State;When ripple frequency falls at some specific Frequency, filter construction becomes plug-in type string
H mode filter in parallel, c-type cavity volume filter construction and elastic thin-wall filter structure concur,
Cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Figure 10 (b) state, due to plug-in type string also
The natural frequency of connection H mode filter is designed to consistent, to fundamental frequency with these particular low frequency ripple frequencies
The system that energy is big can play preferable filter effect;When ripple frequency falls beyond some characteristic frequency
Low-frequency range time, cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Figure 10 (c) state.This
The structure changes wave filter design of sample both ensure that the full frequency band full working scope filtering of hydraulic system, reduces again
The pressure loss of wave filter under nominal situation, it is ensured that the hydraulic pressure rigidity of system.
The present invention can also the pulsation decay of solid line operating mode self-adaptive pressure.When hydraulic system working conditions change,
Both executive component stopped suddenly or ran, and when the opening of valve changes, can cause the spy of pipe-line system
Property impedance is undergone mutation, so that former pipeline pressure curve with change in location in time changes the most therewith
Become, then the position of pressure peak also changes.Axial length design due to the wave filter of the present invention
For pulsing wavelength more than system main pressure, and the cavity volume of the connection in series-parallel H mode filter group of wave filter is long
Degree, the length of c-type cavity volume wave filter and the length of elastic thin-wall and wave filter axial length are equal, protect
Demonstrate,prove pressure peak position to be constantly in the effective range of wave filter;And the filtering of connection in series-parallel H type
The taper structure changes damping hole of device is opened on elastic thin-wall, is uniformly distributed in the axial direction, and resonate cavity volume
1 is connected by the taper resonantron of multiple axial equally distributed identical parameters with resonance cavity volume 2, taper
Mutually stagger in damping hole and taper resonantron position so that the pressure peak change in location property to wave filter
Can have little to no effect, it is achieved thereby that operating mode adaptive-filtering function.In view of three kinds of filter structures
Axial dimension and wave filter are suitable, and it is stronger that this bigger size also ensure that hydraulic filter possesses
Pressure fluctuation damping capacity.
The method that the hydraulic filter using the present invention carries out hydraulic pulsation filtering is as follows:
1), hydraulic fluid enters c-type cavity volume wave filter by input pipe, and it is unnecessary that the cavity volume of expansion absorbs
Liquid stream, completes the filtering of high frequency pressure pulsations;
2), by elastic thin-wall 87 forced vibration, the pressure fluctuation energy of fluid is consumed, in completing
The filtering of pressure fluctuation frequently;
3), by connection in series-parallel H mode filter group, and taper structure changes damping hole, taper insertion pipe
Produce resonance with fluid, consume pulsation energy, complete the filtering of low frequency pulsation;
4), the axial length of wave filter is designed as more than hydraulic system main pressure pulsation wavelength, and
Connection in series-parallel H mode filter length, c-type cavity volume filter length and elastic thin-wall 87 length are with filtering
Device length is equal, makes pressure peak position be constantly in the effective range of wave filter, it is achieved system
The filtering of pressure fluctuation when operating mode changes;
5), by stretching of the cone shaped elastic damping hole pipe of taper structure changes damping hole and opening of slot apertures
Close, complete pressure fluctuation adaptive-filtering.
Described U-shaped separation of particles module 3 includes a U-tube 31, and U-tube 31 is sequentially installed with
Electrification module 32, separation module the 33, first adsorption module 34, rotating excitation field be centrifuged module 36, the
Two adsorption modules 37 and demagnetization module 35.
Described electrification module 32 makes the metallic particles material in fluid charged, and it is by some electrodes 321
And one electrode controller 322 form.Described some electrodes 321 are installed in U-tube 31, its
It is respectively connecting to electrode controller 252.Described electrode controller 322 is electrically connected with to be executed to electrode 321
Making alive, makes the particulate matter in fluid charged.
Described separation module 33 make particle charge that quality is bigger poly-be incorporated under centrifugal action get rid of to
Cavity wall, it can use uniform magnetic field separation module, rotating excitation field separation module or helical pipe magnetic field to divide
From module.
When described separation module 33 uses uniform magnetic field separation module, it is by 331, two, aluminum matter pipeline
Magnetic pole 332 and magnetic pole controller 333 form.Wherein, said two magnetic pole 332 is separately positioned on
On aluminum matter pipeline 331, the opposite polarity of these two magnetic poles 332, and in being oppositely arranged.Said two
Magnetic pole 332 is respectively and electrically connected on magnetic pole controller 333.
The design principle of described uniform magnetic field separation module 33 is as follows: charged particle flows into speed V
Uniform magnetic field separation module 33, two magnetic poles 332 of uniform magnetic field separation module 33 produce and speed
The uniform magnetic field that V direction is vertical, according to left hand rule, then charged particle is at uniform magnetic field separation module
By being perpendicular to acting on of the Loulun magnetism of velocity attitude and magnetic direction in 33, this power does not change charged
The speed of granule, it only changes the direction of motion of charged particle, makes charged particle under this force
To the vessel wall motion of aluminum matter pipeline 331, so that the granule in fluid " separates " out from fluid,
Assemble to tube wall, it is simple to subsequent adsorbtion captures.Owing to fluid has certain viscosity, granule is to tube wall
Motor process is also acted on by viscous drag.In order to ensure separating effect, need to regulate magnetic field strong
Degree B makes the granule of distance tube wall farthest to move at tube wall within the action time of separation module,
Quantitative analysis is as follows:
Assuming that particle mass is m, speed is v, and magnetic field intensity is B, and carried charge is q, separation module
A diameter of D, a length of L, then:
Acting on the Loulun magnetism on charged particle is
Fl=qvB
The viscous drag that charged particle is subject to is
Fd=6 π η r v
Charged of the radius v of η hydraulic pressure oil viscosity r charged particle
Grain movement velocity
It not general, it is assumed that the granule in fluid has reached stable state when entering separation module, the most charged
Granule can be approximated by the time of separation module and represent with following formula
The charged particle of distance tube wall farthest moves to the time t at tube wall2Can be solved by following formula
Regulation B so that t1>t2, i.e. can reach separating effect.
When described separation module 33 uses rotating excitation field separation module, it is by aluminum matter pipeline 331, irony
The parts compositions such as shell 334, three-phase symmetric winding 335 and three-phase symmetrical current module 336.Institute
State three-phase symmetric winding 335 to be wound on outside aluminum matter pipeline 331.Described iron shell 334 is coated on aluminum matter
On pipeline 335.Described three-phase symmetrical current module 336 connects described three-phase symmetric winding 335.
The design principle of described rotating excitation field separation module 33 is as follows: charged particle flows into speed V
Rotating excitation field separation module 33, three-phase symmetrical current module 336 makes to flow through in three-phase symmetric winding 335
Three-phase symmetrical electric current, this electric current produces rotating excitation field in aluminum matter pipeline 331, and charged particle is rotating
By being perpendicular to acting on of the Loulun magnetism of velocity attitude and magnetic direction under the action of a magnetic field, this power does not changes
Becoming the speed of charged particle, it only changes the direction of motion of charged particle, makes charged particle in this power
Spirally advance under effect, and to vessel wall motion.Reasonable adjusting magnetic field intensity can make in fluid
Granule " separates " out from fluid, is gathered in near-wall, it is simple to subsequent adsorbtion captures.Due to
Fluid has certain viscosity, and granule is also acted on by viscous drag during vessel wall motion.For
Guarantee separating effect, need to make the microgranule on aluminum matter pipeline 331 axis can be in the effect of separation module
Moving in time at tube wall, quantitative analysis is as follows:
Assuming that particle mass is m, speed is v, and magnetic field intensity is B, and carried charge is q, separation module
A diameter of D, a length of L, then:
Acting on the Loulun magnetism on charged particle is
Fl=qvB
The viscous drag that charged particle is subject to is
Fd=6 π η r v
Charged of the radius v of η hydraulic pressure oil viscosity r charged particle
Grain movement velocity
Assuming that the granule in fluid has reached stable state when entering separation module, then charged particle is by separating
The time of module can approximate and represent with following formula
Charged particle on conduit axis moves to the time t at tube wall2Can be solved by following formula
Regulation B so that t1>t2, i.e. can reach separating effect.
When described separation module 33 uses helical pipe magnetic field separation module, it is by aluminum matter helical pipe
338, solenoid 339 and solenoid control circuit 336 form.Wherein, described aluminum matter serpentine pipe
Road 338 is arranged in solenoid 339.Described solenoid 339 and solenoid control circuit 336 are electrical
Connect.Described solenoid control circuit 336 is electrically connected to ECU3.
The design principle of described helical pipe magnetic field separation module 33 is as follows: carry the oil of charged particle
Liquid advances along aluminum matter helical pipe 338, thus produces at pipeline exit and have certain spin direction
Eddy flow, the charged particle of heavier mass rotates along with fluid, produces under the influence of centrifugal force to tube wall
Radial motion;Simultaneously as the Way in of aluminum matter helical pipe 338 and energization solenoid 339
Axial magnetic field direction vertical, enter the charged particle of aluminum matter helical pipe 338 by Lip river with speed v
The effect of logical sequence magnetic force, direction is perpendicular to magnetic direction and the Way in of aluminum matter helical pipe 338.Lip river
Logical sequence magnetic force makes charged particle spin in pipeline forward travel, due to entering of aluminum matter helical pipe 338
Mouthful direction and magnetic direction are close to vertical, and charged particle mainly rotates in a circumferential direction motion, and fluid is the most not
Impacted, thus realize granule " separation " from fluid, in order to realize the absorption to granule.For
Ensure " separation " effect, need to make the microgranule on aluminum matter conduit axis can be when the effect of separation module
In move at tube wall, quantitative analysis is as follows:
Assuming that particle mass is m, speed is v, and carried charge is q, a diameter of D of aluminum matter helical pipe,
The number of turn of aluminum matter helical pipe is n, the Way in of aluminum matter helical pipe and energization solenoid axial
The angle of magnetic direction is θ, and the solenoid number of turn is N, and electric current is I, and magnetic field intensity is B, Vacuum Magnetic
Conductance is μ0, then:
Acting on the Loulun magnetism on charged particle is
Fl=qvB
The viscous drag that charged particle is subject to is
Fd=6 π η r v
Charged of the radius v of η hydraulic pressure oil viscosity r charged particle
Grain movement velocity
Charged particle can be approximated by the time of separation module and represent with following formula
Charged particle on conduit axis moves to the time t at tube wall2Can be solved by following formula
Magnetic field intensity within solenoid can be approximately constant
Regulation I so that t1>t2, i.e. can reach separating effect.
Described first adsorption module 34 is the most micro-for adsorbing the magnetic polymeric after separated module 33 separates
, it can use homopolarity adjacent type absorbing ring, and this homopolarity adjacent type absorbing ring is by aluminium ring shape pipeline
341, the parts such as forward solenoid 342, reverse solenoid 343 and irony magnetic conduction cap 344 composition.
Wherein, described forward solenoid 342 and reverse solenoid 343 are respectively arranged in aluminium ring shape pipeline
341, both are connected with electric current in opposite direction so that forward solenoid 342 and reverse solenoid 343
Adjacent produces like pole.Described irony magnetic conduction cap 344 is arranged in the interior of aluminium ring shape pipeline 341
On wall, it is positioned at forward solenoid 342 and reverse solenoid 343 adjacent and forward solenoid
342 and the intermediate point of reverse solenoid 343 axis.
The design principle of described homopolarity adjacent type absorbing ring is as follows: energising forward solenoid 342, reversely
Solenoid 343, adjacent forward solenoid 342, reverse solenoid 343 are connected with electricity in opposite direction
Stream so that forward solenoid 342, reverse solenoid 343 adjacent produce like pole;Meanwhile,
Aluminium ring shape pipeline 341 can improve magnetic circuit, strengthens the magnetic field intensity at inner-walls of duct, strengthens irony
The magnetic conduction cap 344 capture absorbability to granule.Each forward solenoid 342, reverse solenoid 343
Electric current can be different with concentration and change, to obtain optimal adsorption performance according to the size of granule.
Further, described first adsorption module 34 may be used without the homopolarity adjacent type suction of charged hammer
Follower ring, the homopolarity adjacent type absorbing ring of this charged hammer is by aluminium ring shape pipeline 341, forward solenoid
342, reverse solenoid 343, irony magnetic conduction cap 344, dividing plate 345, electric shock hammer 346 and electromagnetism
Ferrum 347 parts such as grade form.Wherein, described forward solenoid 342 and reverse solenoid 343 cloth respectively
Being placed in aluminium ring shape pipeline 341, both are connected with electric current in opposite direction so that forward solenoid 342
Like pole is produced with reverse solenoid 343 adjacent.Described irony magnetic conduction cap 344 is arranged in aluminum matter
On the inwall of circulating line 341, its be positioned at forward solenoid 342 and reverse solenoid 343 adjacent,
And forward solenoid 342 and the intermediate point of reverse solenoid 343 axis.Described electric shock hammer 346 Hes
Electric magnet 347 is between dividing plate 345.Described electric magnet 347 connects and can promote electric shock hammer 346,
Make electric shock hammer 346 percussion aluminium ring shape pipeline 342 inwall.
The design principle of the homopolarity adjacent type absorbing ring of described charged hammer is as follows: energising forward solenoid
342, reverse solenoid 343, adjacent forward solenoid 342, reverse solenoid 343 are connected with direction
Contrary electric current so that forward solenoid 342, reverse solenoid 343 adjacent produce like pole;
Meanwhile, aluminium ring shape pipeline 341 can improve magnetic circuit, strengthens the magnetic field intensity at inner-walls of duct, increases
The strong irony magnetic conduction cap 344 capture absorbability to granule.Each forward solenoid 342, reverse helical
Pipe 343 electric current can be different with concentration and change, to obtain best adsorption according to the size of granule
Energy.And by the setting of electric shock hammer 346, prevent granule bulk deposition at irony magnetic conduction cap 344,
Affect adsorption effect.Now, controlled in electric shock hammer 346 percussion pipeline 341 by electric magnet 347
Wall so that adsorbed granule scatter to both sides.Meanwhile, when cleaning pipeline 341, electric shock hammer
The percussion of 346 can also improve cleaning performance.
Described first adsorption module 34 is designed to U-shaped, when fluid enters U-shaped absorption pipeline,
Grain gravity, centrifugal force effect under, to side, tube wall moves, plus magnetic field force effect, radially
Translational speed is accelerated, and the efficiency of granular absorption is improved;Leave U-shaped absorption pipeline at fluid to rise
Time, gravity and magnetic field force make a concerted effort so that granule diagonally under direction motion, extend numerical density
Time, improve the efficiency of granular absorption.
Described rotating excitation field is centrifuged module 36 and utilizes that rotating excitation field is centrifugal is not inhaled by the first adsorbent equipment 34
Attached small magnetization granule, its by aluminum matter pipeline 361, iron shell 362, three-phase symmetric winding 363,
Flange 364 and three-phase symmetrical current module 365 form.Described three-phase symmetric winding 363 is wound on aluminum
Outside matter pipeline 361.Described iron shell 362 is coated on aluminum matter pipeline 361.Described flange 364
It is welded on the two ends of aluminum matter pipeline 361.Described three-phase symmetrical current module 365 connects described three relative
Claim winding 363.
The operation principle that described rotating excitation field is centrifuged module 36 is as follows: small magnetization not to be adsorbed
Grain enters rotating excitation field and is centrifuged module 36, and three-phase symmetrical current module 365 makes three-phase symmetric winding 363
In flow through three-phase symmetrical electric current, this electric current produces rotating excitation field, magnetized particles in aluminum matter pipeline 361
Acted on by magnetic field force under rotating excitation field effect, and the most spirally advanced,
Simultaneously to vessel wall motion.Therefore, regulation magnetic field intensity can make the granule in fluid " divide from fluid
From " out, it being gathered in aluminum matter pipeline 361 near-wall, it is simple to subsequent adsorbtion captures.
Described second adsorbent equipment 37 is identical with described first adsorbent equipment 34 structure, function and effect
Mechanism is the most identical, and it can adsorb rotated magnetic field further and be centrifuged the granule that module 36 separates.
Described demagnetization module 35 gives magnetized particles demagnetization, prevents residual magnetism microgranule from being entered by oil returning tube
Oil pipe enters hydraulic circuit, and sensitive to pollution Hydraulic Elements cause damage.
An oil returning tube oil inlet pipe 22 is passed through in the top of described U-shaped separation of particles module 3 and oil returning tube 7
Connect;By U-shaped separation of particles module 3 process after, the fluid of U-tube 31 near-wall rich in
Aggregated particles, is back to fuel tank after entering oil returning tube 7 by oil returning tube oil inlet pipe 22.
The bottom of described oil returning tube 7 is provided with an overflow valve 8, is provided with an automatically controlled tune bottom this overflow valve 8
Joint screw 9;Described overflow valve 8 is provided with an oil drain out 10, and this oil drain out 10 is by pipeline 20 even
It is connected to a fuel tank 11.
Described inner core 15 is placed in outer barrel 19, if it is installed by a top board 13 and bolt stem 21
On end cap 25.Described helical flow path 17 is contained in inner core 15, itself and U-shaped separation of particles mould
Connected by an inner core oil inlet pipe 12 between block 3, specifically, described inner core oil inlet pipe 12 and spiral shell
The tangent connection in eddy flow road 17.The fluid of the U-tube 31 pipeline center only small particle microgranule Han trace is logical
Cross inner core oil inlet pipe 12 to enter inner core 15 and realize high-precision filtration, thus realize solid particle and separate.
Further, described inner core oil inlet pipe 12 is positioned at oil returning tube oil inlet pipe 22, and extends into U-shaped micro-
The central authorities of grain separation module 3, its diameter is less than oil returning tube oil inlet pipe 22 diameter, and enters with oil returning tube
Oil pipe 22 is coaxially disposed.
Further, the bottom of described inner core 15 is rounding mesa-shaped, and it passes through an inner core oil exit pipe 23
Connecting with oil returning tube 7, inner core oil exit pipe 23 is provided with an automatically controlled check-valves 24.Described inner core 15
Center upright is provided with a hollow cylinder 16, hollow cylinder 16 be arranged over pressure difference indicator 14, should
Pressure difference indicator 14 is installed on end cap 25.
Described filter element 18 is arranged on the inwall of inner core 15, and its precision is 1-5 micron.
The bottom of said tub 19 is provided with a hydraulic oil oil-out 5, is incited somebody to action by hydraulic oil oil-out 5
The hydraulic oil filtered is discharged.
In the present invention, due to U-shaped separation of particles module 3, solid particle separation of polymeric in fluid is made
With, in the fluid in U-shaped separation of particles module 3 exit, the fluid at the center only small particle Han trace
Microgranule, this part fluid is flowed into inner core 15 from inner core oil inlet pipe 12 and carries out high-precision filtration;And manage
Fluid near wall is rich in aggregated particles, and this part fluid enters oil return by oil returning tube oil inlet pipe 22
Cylinder 7, then flow back to fuel tank 11 through the oil drain out 10 of overflow valve 8, thus realize solid particle by particle
Footpath shunting filtering.Herein, oil returning tube 7 and overflow valve 8 serve aforesaid macrofiltration, thus save
Save filter number, reduce system cost and complexity.The automatically controlled set screw 9 of overflow valve 8
For regulating oil pressure relief, its pressure is adjusted to slightly below pressure at filtering outlet, to ensure inner core
15 filtering traffics.
It addition, traditional filter mainly uses cake filtration mode, during filtration, filtrate is perpendicular to filter
Element surface flows, and trapped solid particle forms filter cake progressive additive, and the rate of filtration is the most therewith
It is gradually reduced, until filtrate stops flowing out, reduces the service life of filter element.In this present invention
In, carry in the filtrate of small particle microgranule flows in the way of tangential influent stream from inner core oil inlet pipe 12
The helical flow path 17 of cylinder 15, inner core 15 wall of helical duct 17 side is high-precision filter element 18, filter
Liquid is close to filter element 18 surface under the influence of centrifugal force, and filtrate is parallel to the surface of filter element 18 and quickly flows
Dynamic, the hydraulic oil after filtration is then perpendicular to filter element 18 surface direction and flows out to urceolus 19, the two stream
Dynamic direction is orthogonal staggered, therefore is called cross flow and filters.The quickly flowing of filtrate is to being gathered in
The microgranule on filter element 18 surface is applied with shearing and sweeps stream effect, thus inhibits the increase of filter cake thickness,
Making rate of filtration near constant, filter pressure also will not raise with the passing of time, making of filter element
With the life-span thus increase substantially.Along with the accumulation of filtration time, it is deposited at the bottom of inner core 15 inverted round stage
The pollution granule in portion is stepped up, and the rate of filtration slowly declines, unfiltered filtrate edge in inner core 15
The hollow cylinder 16 at center rises, and now, pressure difference indicator 14 works, and monitors the change of its pressure,
That is the stopping state of filter element 18 bottom inner core 15, if exceeding threshold value, then regulate automatically controlled set screw
9 reduce oil pressure relief, and open check-valves 24 simultaneously, make bottom inner core 15 containing more pollution granule
Filtrate under differential pressure action, be discharged to oil returning tube 7 by inner core oil exit pipe 23, it is to avoid bottom filter element
18 blockage deteriorate, thus extend filter element 18 service life.
Use above-mentioned oil filter that backflow is pressed with the processing step of process as follows:
1), the fluid in fluid pressure line pass through wave filter 8, wave filter 8 decay the height in hydraulic system,
In, the fluctuation pressure of low-frequency range, and suppression flowed fluctuation;
2), backflow force feed enters the electrification module 32 of U-shaped separation of particles module 3, makes in fluid
Particulate matter is charged, delivers to separation module 33 afterwards;
3), the charged corpuscle in fluid is made to gather to tube wall under the effect of external force by segregation apparatus 33
Closing, the first adsorbent equipment 34 is delivered in oil return afterwards;
4), being adsorbed the magnetic polymeric microgranule in oil return by the first adsorption module 34, oil return afterwards is sent
It is centrifuged module 36 to rotating excitation field;
5), rotating excitation field is centrifuged module 36 and utilizes rotating excitation field to separate unadsorbed magnetic microparticles, it
The second adsorption module 37 is delivered in rear oil return;
6), the magnetic polymeric microgranule in the second adsorption module 37 second adsorption oil return;
7), magnetic particle magnetic is eliminated by demagnetization module 35;
8), the fluid of the most U-shaped separation of particles module 3 near-wall passes through oil returning tube oil inlet pipe 22
Being back to fuel tank after entering oil returning tube 7, the fluid of the pipeline center containing trace small particle microgranule then leads to
Cross inner core oil inlet pipe 12 to enter inner core 15 and carry out high-precision filtration;
9) fluid, carrying small particle microgranule flows into the spiral flow of inner core 15 in the way of tangential influent stream
Road 17, fluid is close to filter core flow under the influence of centrifugal force, and is carried out high-precision filtration;
10), the fluid after high-precision filtration enters urceolus 19, and by the hydraulic oil bottom urceolus 19
Oil-out 5 is discharged.
Above detailed description of the invention is only the preferred embodiment of this creation, not in order to limit this wound
Make, all any modification, equivalent substitution and improvement etc. done within this spirit created and principle,
Within should be included in the protection domain of this creation.
Claims (10)
1. by full frequency band operating mode adaptive-filtering, electrification and the oil strain method of rotating excitation field, it is characterized in that: it uses a kind of oil filter, and this oil filter includes base plate, wave filter, U-shaped separation of particles module, oil returning tube, inner core, helical flow path, filter element, outer barrel and end cap;Wherein, described wave filter, U-shaped separation of particles module, oil returning tube, outer barrel are sequentially placed on base plate;Described wave filter includes input pipe, shell, outlet tube, elastic thin-wall, H mode filter and cascaded H mode filter;Wherein, described input pipe is connected to one end of shell, itself and hydraulic oil inlet docking;Described outlet tube is connected to the other end of shell, and itself and U-shaped separation of particles module are docked;Described elastic thin-wall is installed in shell along the radial direction of shell;Described input pipe, outlet tube and elastic thin-wall are collectively forming a c-type cavity volume wave filter;Some taper structure changes damping holes are uniformly had in the axial direction of described elastic thin-wall;Described taper structure changes damping hole is made up of cone shaped elastic damping hole pipe and slot apertures;Resonance series cavity volume I and parallel resonance cavity volume is formed between described elastic thin-wall and shell;The outside of described resonance series cavity volume I sets a resonance series cavity volume II, inserts pipe by the taper of some uniform arrangements and connect between described resonance series cavity volume I and resonance series cavity volume II;Described H mode filter is positioned at parallel resonance cavity volume, and it is connected with taper structure changes damping hole;Described cascaded H mode filter is positioned at resonance series cavity volume I and resonance series cavity volume II, and it is also connected with taper structure changes damping hole;Described H mode filter and cascaded H mode filter are axially symmetrical set, and form connection in series-parallel H mode filter;Described U-shaped separation of particles module includes a U-tube, U-tube is sequentially installed with electrification module, separation module, the first adsorption module, rotating excitation field are centrifuged module, the second adsorption module and demagnetization module;The top of described U-shaped separation of particles module and oil returning tube is connected by an oil returning tube oil inlet pipe;Described inner core is placed in outer barrel, if it is installed on end cap by a top board and bolt stem;Described helical flow path is contained in inner core, is connected by an inner core oil inlet pipe between itself and U-shaped separation of particles module;Described inner core oil inlet pipe is positioned at oil returning tube oil inlet pipe, and extends into the central authorities of U-shaped separation of particles module, and its diameter is less than oil returning tube oil inlet pipe diameter, and and oil returning tube oil inlet pipe be coaxially disposed;Described filter element is arranged on the inwall of inner core, and its precision is 1-5 micron;The bottom of said tub is provided with a hydraulic oil oil-out;
It comprises the steps:
1), the fluid in fluid pressure line passes through wave filter, the fluctuation pressure of the high, medium and low frequency range in filter attenuation hydraulic system, and suppression flowed fluctuation;
2), backflow force feed enters the electrification module of U-shaped separation of particles module, makes the particulate matter in fluid charged, delivers to separation module afterwards;
3), making the charged corpuscle in fluid be polymerized to tube wall under the effect of external force by segregation apparatus, the first adsorbent equipment is delivered in oil return afterwards;
4), by the magnetic polymeric microgranule in the first adsorption module absorption oil return, oil return afterwards is delivered to rotating excitation field and is centrifuged module;
5), rotating excitation field is centrifuged module and utilizes rotating excitation field to separate unadsorbed magnetic microparticles, and the second adsorption module is delivered in oil return afterwards;
6), the magnetic polymeric microgranule in the second adsorption module second adsorption oil return;
7), magnetic particle magnetic is eliminated by demagnetization module;
8), the fluid of the most U-shaped separation of particles module near-wall is back to fuel tank after entering oil returning tube by oil returning tube oil inlet pipe, and the fluid of the pipeline center containing trace small particle microgranule then enters inner core by inner core oil inlet pipe and carries out high-precision filtration;
9), the fluid carrying small particle microgranule flows into the helical flow path of inner core in the way of tangential influent stream, and fluid is close to filter core flow under the influence of centrifugal force, and is carried out high-precision filtration;
10), the fluid after high-precision filtration enters urceolus, and is discharged by the hydraulic oil oil-out bottom urceolus.
2. as claimed in claim 1 by full frequency band operating mode adaptive-filtering, electrification and the oil strain method of rotating excitation field, it is characterised in that: the axis of described input pipe and outlet tube is the most on the same axis;The wider place of described taper structure changes damping hole opening is positioned at resonance series cavity volume I and parallel resonance cavity volume, and its taper angle is 10 °;The Young's modulus of described taper structure changes damping hole cone shaped elastic damping hole pipe is bigger than the Young's modulus of elastic thin-wall, can be with change in fluid pressure stretching or compression;The Young's modulus of slot apertures is bigger than the Young's modulus of cone shaped elastic damping hole pipe, can be with fluid opened by pressure or closedown;Described taper is inserted the wider place of tube opening and is positioned at resonance series cavity volume II, and its taper angle is 10 °;Described taper is inserted the position of pipe and taper structure changes damping hole and is mutually staggered.
3. as claimed in claim 1 by full frequency band operating mode adaptive-filtering, electrification and the oil strain method of rotating excitation field, it is characterised in that: described electrification module includes some electrodes and an electrode controller;Described some electrodes are installed in U-tube, and it is respectively connecting to electrode controller.
4. as claimed in claim 1 by full frequency band operating mode adaptive-filtering, electrification and the oil strain method of rotating excitation field, it is characterized in that: described separation module uses uniform magnetic field separation module, and this uniform magnetic field separation module includes aluminum matter pipeline, two magnetic poles and magnetic pole controller;Wherein, said two magnetic pole is separately positioned on aluminum matter pipeline, the opposite polarity of these two magnetic poles, and in being oppositely arranged;Said two magnetic pole is respectively and electrically connected on magnetic pole controller.
5. as claimed in claim 1 by full frequency band operating mode adaptive-filtering, electrification and the oil strain method of rotating excitation field, it is characterized in that: described separation module uses rotating excitation field separation module, and this rotating excitation field separation module includes aluminum matter pipeline, iron shell, three-phase symmetric winding and three-phase symmetrical current module;Described three-phase symmetric winding is wound on outside aluminum matter pipeline;Described iron shell is coated on aluminum matter pipeline;Described three-phase symmetrical current module connects described three-phase symmetric winding.
6. as claimed in claim 1 by full frequency band operating mode adaptive-filtering, electrification and the oil strain method of rotating excitation field, it is characterized in that: described separation module uses helical pipe magnetic field separation module, and this helical pipe magnetic field separation module includes aluminum matter helical pipe, solenoid and solenoid control circuit;Wherein, described aluminum matter helical pipe is arranged in solenoid;Described solenoid and solenoid control circuit are electrically connected with.
7. as claimed in claim 1 by full frequency band operating mode adaptive-filtering, electrification and the oil strain method of rotating excitation field, it is characterized in that: described first adsorption module and second is inhaled adsorption module and used homopolarity adjacent type absorbing ring, and this homopolarity adjacent type absorbing ring includes aluminium ring shape pipeline, forward solenoid, reverse solenoid and irony magnetic conduction cap;Described forward solenoid and reverse solenoid are respectively arranged in aluminium ring shape pipeline, and both are connected with electric current in opposite direction so that forward solenoid and reverse solenoid adjacent produce like pole;Described irony magnetic conduction cap is arranged on the inwall of aluminium ring shape pipeline, and it is positioned at forward solenoid and reverse solenoid adjacent and forward solenoid and the intermediate point of reverse solenoid axis.
8. as claimed in claim 1 by full frequency band operating mode adaptive-filtering, electrification and the oil strain method of rotating excitation field, it is characterized in that: described first adsorption module and second is inhaled adsorption module and used the homopolarity adjacent type absorbing ring of charged hammer, and the homopolarity adjacent type absorbing ring of this charged hammer includes aluminium ring shape pipeline, forward solenoid, reverse solenoid, irony magnetic conduction cap, dividing plate, electric shock hammer and electric magnet;Described forward solenoid and reverse solenoid are respectively arranged in aluminium ring shape pipeline, and both are connected with electric current in opposite direction so that forward solenoid and reverse solenoid adjacent produce like pole;Described irony magnetic conduction cap is arranged on the inwall of aluminium ring shape pipeline, and it is positioned at forward solenoid and reverse solenoid adjacent and forward solenoid and the intermediate point of reverse solenoid axis;Described dividing plate is between forward solenoid and reverse solenoid;Described electric shock hammer and electric magnet are between dividing plate;Described electric magnet connects and can promote electric shock hammer, makes electric shock hammer tap aluminium ring shape inner-walls of duct.
9. use full frequency band operating mode adaptive-filtering, electrification and the oil strain method of rotating excitation field described in claim 1, it is characterised in that: described rotating excitation field is centrifuged module and includes aluminum matter pipeline, iron shell, three-phase symmetric winding, flange and three-phase symmetrical current module;Described three-phase symmetric winding is wound on outside aluminum matter pipeline;Described iron shell is coated on aluminum matter pipeline;Described flange welding is at the two ends of aluminum matter pipeline;Described three-phase symmetrical current module connects described three-phase symmetric winding.
10. use full frequency band operating mode adaptive-filtering, electrification and the oil strain method of rotating excitation field described in claim 1, it is characterised in that: the bottom of described oil returning tube is provided with an overflow valve, is provided with an automatically controlled set screw bottom this overflow valve;Described overflow valve is provided with an oil drain out, and this oil drain out is connected to a fuel tank by pipeline;The bottom of described inner core is rounding mesa-shaped, and it is connected by an inner core oil exit pipe and oil returning tube, and inner core oil exit pipe is provided with an automatically controlled check-valves;The center upright of described inner core is provided with a hollow cylinder, hollow cylinder be arranged over pressure difference indicator, this pressure difference indicator is installed on end cap;Described inner core oil inlet pipe and the tangent connection of helical flow path.
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