CN205786204U - Use structure changes filtering, separate and moulding twin coil Oil Monitoring system - Google Patents

Abstract

This utility model relates to a kind of using structure changes filtering, separating and moulding twin coil Oil Monitoring system, it is arranged on fluid pressure line, its wave filter, separate adsorption module, rotate moulding module, detection coil, flow transducer, demagnetization module are successively set on fluid pressure line；Described detection coil, reference coil are in series；ECU is electrically connected with and controls wave filter, separates adsorption module, rotates moulding module, detection coil, reference coil, demagnetization module and flow transducer；Described wave filter uses structure changes wave filter；Described separation adsorption module is made up of the mechanical centrifugal module being sequentially connected with, magnetized module, magnetic suck module, electrification module and electric adsorption module.This utility model uses non-contacting metering system, the plurality of advantages such as have that signal conformance is good, reliability is high, detection signal is strong and error is little.

Description

Use structure changes filtering, separate and moulding twin coil Oil Monitoring system

[technical field]

This utility model relates to a kind of fluid online monitoring system, is specifically related to a kind of employing structure changes filter Ripple, separation and moulding twin coil Oil Monitoring system, belong to technical field of hydraulic equipment.

[background technology]

In the failure mode of machine parts, the inefficacy that abrasion causes accounts for more than 70%.Metallic wear particles In imply mechanized equipment running state information, abrasion present situation and the trend of equipment can be reflected, the most also It is diagnostic device fault, is predicted maintenance, equipment is improved the important evidence of design.Therefore, Metallic wear particles in fluid carries out on-line monitoring become hydraulic system clamping jam faults and examine The disconnected important means with anticipation.

Utilize coil inductance change can detect ferromagnetics granule and diamagnetism granule in fluid, simultaneously can be true Determine the quality analysis of wear particle, distribution of sizes, total quantity, can conveniently realize non-intruding on-line monitoring. Chinese invention patent the 201210167540.Xth discloses a kind of online oil measured based on inductance value Liquid particle sensor, when the metal wear particles in fluid flows through test coil so that test coil Inductance quantitative change is big, and high-frequency test circuit oscillation frequency diminishes, and oscillation circuit electric current becomes big, galling After granule flows through, high-frequency test part comes back to original fixed ampllitude oscillatory regime, and then obtains granule Quantity, particle size distribution produce speed with granule, it is achieved granule on-line monitoring in oil.

But, there is the deficiency of following several respects in this monitoring method:

1. the magnetic fluctuation that metallic wear particles causes when flowing through test coil is the faintest, detects coil Output result affected relatively big by microgranule Negotiation speed, in pipeline, pressure and the flowed fluctuation of fluid will be tight Ghost image rings effectiveness and the concordance of inductance method detection of particulates.

2. the galling abrasive particle in machine oil can be divided into ferromagnetics microgranule according to its electromagnetic property (such as ferrum) and non-ferromagnetic material microgranule (such as copper, aluminum).Ferromagnetics microgranule strengthens the equivalence of cell winding Inductance, non-ferromagnetic material microgranule then weakens the equivalent inductance of cell winding.When two kinds of microgranules lead to simultaneously When crossing detection coil, this monitoring device will lose efficacy.

The particle diameter of metallic wear particles is less the most under normal circumstances, at about 5um, and predominantly ball Abrasive particle, its fiber number is less than other abrasive particles, and cell winding is relatively weak to its power of test.Such as patent Document 1 can only process the metal particle of about 10um, it is impossible to the premature wear of monitoring parts.

4. the magnetic induction density B in solenoid is non-uniform Distribution along its axis direction, and this will cause Serious measurement error；The power of test of Ferrous particles is greater than copper by the inductance of the most same model The power of test of matter granule, this can bring measurement error equally.

Therefore, for solving above-mentioned technical problem, the employing structure changes filter of a kind of innovation of necessary offer Ripple, separation and moulding twin coil Oil Monitoring system, to overcome described defect of the prior art.

[utility model content]

For solving above-mentioned technical problem, the purpose of this utility model is to provide a kind of employing non-contacting Metering system, signal conformance are good, reliability is high, the detection employing structure changes that signal is strong and error is little Filtering, separation and moulding twin coil Oil Monitoring system.

For achieving the above object, the technical scheme that this utility model is taked is: use structure changes to filter, Separating and moulding twin coil Oil Monitoring system, it is arranged on fluid pressure line, it include wave filter, Separate adsorption module, rotate moulding module, detection coil, reference coil, demagnetization module, flow biography Sensor and ECU；Wherein, described wave filter, separate adsorption module, rotate moulding module, detection Coil, flow transducer, demagnetization module are successively set on fluid pressure line；Described detection coil, ginseng Examine coil to be in series；Described ECU is electrically connected with and controls wave filter, separates adsorption module, rotation Turn moulding module, detection coil, reference coil, demagnetization module and flow transducer；Described wave filter Including input pipe, shell, outlet tube, elastic thin-wall, plug-in type H mode filter and plug-in type string Connection H mode filter；Wherein, described input pipe is connected to one end of shell；Described outlet tube is connected to The other end of shell；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；Between described elastic thin-wall and shell Form resonance series cavity volume I, resonance series cavity volume II and parallel resonance cavity volume；Described resonance series Separated by an elastic baffle between cavity volume I and resonance series cavity volume II；Described elastic thin-wall axial On uniformly have some taper structure changes damping holes；Described taper structure changes damping hole is hindered by cone shaped elastic Buddhist nun hole pipe and slot apertures form；Described elastic baffle is provided with taper near input tube side and inserts pipe, described cone Shape inserts pipe connection resonance series cavity volume I and resonance series cavity volume II；Described plug-in type H mode filter Being positioned at parallel resonance cavity volume, it is connected with taper structure changes damping hole；Described plug-in type cascaded H Mode filter is positioned at resonance series cavity volume I and resonance series cavity volume II, and it also hinders with taper structure changes Buddhist nun hole is connected；Described plug-in type H mode filter and plug-in type cascaded H mode filter are the most symmetrically Arrange, and form plug-in type connection in series-parallel H mode filter；Described separation adsorption module is by being sequentially connected with Mechanical centrifugal module, magnetized module, magnetic suck module, electrification module and electric adsorption module composition.

Employing structure changes of the present utility model filtering, separation and moulding twin coil Oil Monitoring system are entered One step is set to: the axis of described input pipe and outlet tube is the most on the same axis；Described taper becomes knot The wider place of structure 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 its 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 than the Young mould of cone shaped elastic damping hole pipe Amount wants big, can be with fluid opened by pressure or closedown；Described taper is inserted the wider place of tube opening and is positioned at series connection In resonance cavity volume II, its taper angle is 10 °；Pipe and taper structure changes damping hole are inserted in described taper Mutually stagger in position；The inner side of described elastic thin-wall is provided with colloid damping layer；Described colloid damping layer Internal layer and outer layer be respectively outer layer elastic thin-wall and internal layer elastic thin-wall, outer layer elastic thin-wall and internal layer Connected by some pillars are fixing between elastic thin-wall；Described outer layer elastic thin-wall and internal layer elastic thin-wall it Between interlayer in be filled with the pure water adding antifreezing agent, be suspended with Bio-sil in pure water；Described glue Body damping layer is connected with shell near one end of outlet tube；Described colloid damping layer is near the one of outlet tube End is provided with a piston.

Employing structure changes of the present utility model filtering, separation and moulding twin coil Oil Monitoring system are entered One step is set to: described mechanical centrifugal module uses eddy flow to be centrifuged module；Described eddy flow is centrifuged module bag Include eddy flow tube wall, the first flow deflector, the second flow deflector, motor and flow transducer；Wherein, Described first flow deflector is provided with 3, and these 3 first flow deflectors are along tube wall inner periphery every 120 ° uniformly Distribution, its laying angle is set to 18 °；Described second flow deflector and the first flow deflector structure are identical, and it sets Put after the first flow deflector, and and the first flow deflector stagger 60 ° and be connected in tube wall, its laying angle sets It it is 36 DEG C；The long limit of described first flow deflector is connected with tube wall, and minor face extends along the axis of tube wall；Its Leading edge frustrates into obtuse, and trailing edge is processed into wing, and its height is 0.4 times of tube wall diameter, a length of pipe 1.8 times of wall diameter；Described motor connects and drives the first flow deflector and the second flow deflector, with Regulation laying angle；Described flow transducer is arranged on the central authorities in tube wall.

Employing structure changes of the present utility model filtering, separation and moulding twin coil Oil Monitoring system are entered One step is set to: described magnetized module includes aluminum matter pipeline, some windings, iron shell and flange； Wherein, described some windings are rotating around outside aluminum matter pipeline；Described iron shell is coated on aluminum matter pipeline On；Described flange welding is at the two ends of aluminum matter pipeline.

Employing structure changes of the present utility model filtering, separation and moulding twin coil Oil Monitoring system are entered One step is set to: described magnetic suck module uses homopolarity adjacent type absorbing ring, and the adjacent type of this homopolarity adsorbs Ring includes aluminium ring shape pipeline, forward solenoid, reverse solenoid and irony magnetic conduction cap；Described just Being respectively arranged in aluminium ring shape pipeline to solenoid and reverse solenoid, both are connected with in opposite direction Electric current 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 is adjacent Place and forward solenoid and the intermediate point of reverse solenoid axis.

Employing structure changes of the present utility model filtering, separation and moulding twin coil Oil Monitoring system are entered One step is set to: described magnetic suck module uses the homopolarity adjacent type absorbing ring of charged hammer, and this is charged The homopolarity adjacent type absorbing ring of 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 divide Not being arranged in aluminium ring shape pipeline, both are connected with electric current in opposite direction so that forward solenoid and Reverse solenoid adjacent produces like pole；Described irony magnetic conduction cap is arranged in aluminium ring shape pipeline On inwall, it is positioned at forward solenoid and reverse solenoid adjacent and forward solenoid and reversely The intermediate point of 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 taps aluminium ring shape inner-walls of duct.

Employing structure changes of the present utility model filtering, separation and moulding twin coil Oil Monitoring system are entered One step is set to: described electrification module includes some electrodes and an electrode controller；Described some electricity Pole is installed on fluid pressure line, and it is respectively connecting to electrode controller.

Employing structure changes of the present utility model filtering, separation and moulding twin coil Oil Monitoring system are entered One step is set to: described electric adsorption module includes aluminum matter pipeline, positive plate, minus plate and pole plate control Device processed；Wherein, described positive plate, minus plate are separately positioned on aluminum matter pipeline, and in being oppositely arranged； Described positive plate, minus plate are respectively and electrically connected on pole plate controller；Described pole plate controller is electrical It is connected to ECU, and by ECU control.

Employing structure changes of the present utility model filtering, separation and moulding twin coil Oil Monitoring system are entered One step is set to: the moulding module of described rotation includes aluminum matter pipeline, some windings, iron shell, method Blue and some moulding current output module of rotation；Wherein, described some windings are rotating around at aluminum matter pipe Outside road；Described iron shell is coated on aluminum matter pipeline；Described flange welding is at the two ends of aluminum matter pipeline； The moulding current output module of each rotation is connected to a winding.

Employing structure changes of the present utility model filtering, separation and moulding twin coil Oil Monitoring system are also Being set to: the winding of described detection coil is made up of positive winding and inverse winding, each winding is connected to one and swashs Encouraging current output module, this exciting current output module is controlled by ECU module.

Compared with prior art, this utility model has the advantages that this utility model introduces oil Hydraulic coupling flowed fluctuation suppression technology and microgranule timesharing release measure, to ensure the effectiveness and of detection Cause property；By mechanical centrifugal, magnetization absorption, play the technology such as electro-adsorption by ferromagnetics microgranule and non-ferromagnetic Matter separation of particles, affects testing result preventing two kinds of microgranules from interfering with each other；By aggregation of particles and rotation Turn magnetic field moulding increase grain diameter and change its form, to improve the sensitivity of detection；By improving Magnetic induction in solenoid coil structural adjustment solenoid is along the uniformity of its axis direction, to subtract Detect error less；Sensor design is two loop construction detection line coil and a reference coil, is output as Both differences, to overcome the circuit error of zero.

[accompanying drawing explanation]

Fig. 1 is employing structure changes of the present utility model filtering, separates and moulding twin coil Oil Monitoring The overall structure schematic diagram of system.

Fig. 2 is the structural representation of the wave filter in Fig. 1.

Fig. 3 is the profile in Fig. 2 along A-A.

Fig. 4-1 is plug-in type H mode filter schematic diagram in Fig. 3.

Fig. 4-2 is plug-in type cascaded H mode filter schematic diagram in Fig. 3.

Fig. 5 is plug-in type H mode filter and plug-in type cascaded H mode filter frequency characteristic constitutional diagram. Wherein, solid line is plug-in type cascaded H mode filter frequency characteristic.

Fig. 6 is plug-in type connection in series-parallel H mode filter frequency characteristic figure.

Fig. 7 is the structural representation of c-type cavity volume wave filter.

Fig. 8 is the cross sectional representation of elastic thin-wall.

Fig. 9 is the Longitudinal cross section schematic of colloid damping layer.

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 connection diagram separating adsorption module in Fig. 1.

Figure 12-1 is the horizontal schematic diagram of the mechanical centrifugal module in Figure 11.

Figure 12-2 is the radial direction schematic diagram of the mechanical centrifugal module in Figure 11.

Figure 13 is the structural representation of the magnetized module in Figure 11.

Figure 14-1 be the magnetic suck module in Figure 11 be the structural representation of homopolarity adjacent type absorbing ring.

Figure 14-2 is the knot of the adjacent type absorbing ring of the homopolarity that magnetic suck module is charged hammer in Figure 11 Structure schematic diagram.

Figure 15 is the structural representation of the electrification module in Figure 11.

Figure 16 is the structural representation of the electric adsorption module in Figure 11.

Figure 17 is the structural representation rotating moulding module in Fig. 1.

Figure 18-1 is the structural representation of the winding of the detection coil in Fig. 1.

Figure 18-2 is the circuit diagram of the exciting current output module in Figure 18-1.

Figure 19 is the annexation figure of the ECU module in Fig. 1.

[detailed description of the invention]

Referring to shown in Figure of description 1 to accompanying drawing 19, this utility model is a kind of employing structure changes Filtering, separating and moulding twin coil Oil Monitoring system, it is arranged on fluid pressure line 9, its by Wave filter 8, separate adsorption module 2, rotate moulding module 3, detection coil 4, reference coil 5, Several parts compositions such as demagnetization module 6, flow transducer 7 and ECU1.

Wherein, described wave filter 8, separate adsorption module 2, rotate moulding module 3, detection coil 4, Flow transducer 7, demagnetization module 6 are successively set on fluid pressure line 9.Described ECU1 electricity respectively Property connect and control wave filter 8, separate adsorption module 2, rotate moulding module 3, detection coil 4, Reference coil 5, demagnetization module 6 and flow transducer 7.

Owing to the flow velocity of fluid is very big on detection characteristic impact, along with the increase of oil flow, detection Sensitivity and output voltage all will occur significant change；Meanwhile, the flow of fluid is also to detection output Having large effect, when flow increases, output voltage is as well as change, and this is to testing result Concordance and availability influence are very big, to this end, this utility model to add wave filter 8 before detection steady Determine hydraulic system pressure and flow.

Described wave filter 8 is by input pipe 81, shell 89, outlet tube 811, elastic thin-wall 87, insertion Several parts compositions such as formula H mode filter 812 and plug-in type cascaded H mode filter 813.

Wherein, described input pipe 81 is connected to one end of shell 89, is used for inputting fluid；Described defeated Going out pipe 811 and be connected to the other end of shell 89, itself and separation adsorption module 2 dock.Described Thin Elastic Wall 87 is installed in shell 89 along the radial direction of shell.Described input pipe 81 and the axis of outlet tube 811 The most on the same axis, the filter effect of more than 10% can so be improved.

Described input pipe 81, outlet tube 811 and elastic thin-wall 87 are collectively forming a c-type cavity volume filtering Device, thus hydraulic system high frequency pressure pulsations of decaying.The wave filter obtained after processing by lumped-parameter method Transmission coefficient is:

$\mathrm{\γ}=\frac{1}{1+{(\frac{2\mathrm{\π}f}{Z}\·\frac{S_V{L}_V}{S_{I}a})}^2}$

Velocity of sound L in a medium_VC-type cavity volume length S_VC-type cavity volume volume Z characteristic Impedance

γ transmission coefficient f pressure oscillation frequency S_IInput pipe cross-sectional area.

From above formula, when the pressure pulse wave of different frequency is by this wave filter, transmission coefficient is with frequency Rate and different.Frequency is the highest, then transmission coefficient is the least, and this shows that the pressure pulse wave of high frequency is passing through Decay the most severe during wave filter, thus serve the effect eliminating 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 During 81 entrance c-type cavity volume, liquid stream exceedes average discharge, and the cavity volume of expansion can absorb unnecessary liquid stream, And release liquid stream when less than average discharge, thus absorption pressure pulsation energy.

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:

$f_m=\frac{k^{2}h}{2{\mathrm{\πR}}^2}\·\sqrt{\frac{E}{12\mathrm{\ρ}(1+\mathrm{\η})(1-{\mathrm{\μ}}^2)}}$

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 filter construction of the present utility model is bigger and relatively thin, its natural frequency Closer to Mid Frequency, the effective attenuation to the medium-high frequency pressure fluctuation in hydraulic system can be realized.

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 the inside and outside wall of elastic thin-wall 87, and elastic thin-wall 87 does week by the frequency of fluctuation pressure Phase property is vibrated, and this forced vibration consumes the pressure fluctuation energy of fluid, thus realizes Mid Frequency pressure Filtering.From the principle of virtual work, elastic thin-wall consumes the ability of fluid pulsation pressure energy and is forced to it Potential energy and kinetic energy sum during vibration are directly related, in order to improve Mid Frequency filtering performance, elastic thin-wall Radial design be 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 89 formed resonance series cavity volume I84, Resonance series cavity volume II83 and parallel resonance cavity volume 85, described cavity volume 83,84,85 is across whole Wave filter, it is hereby achieved that bigger resonance cavity volume volume, strengthens attenuating.Described series connection is altogether Shake and separated by an elastic baffle 810 between cavity volume I84 and resonance series cavity volume II83.Described elasticity Uniformly having some taper structure changes damping holes 86 in the axial direction of thin-walled 87, described taper structure changes hinders The wider place of opening, Buddhist nun hole 86 is positioned at resonance series cavity volume I84 and parallel resonance cavity volume 85, its tapering Angle is 10 °.Described elastic baffle 810 is provided with taper and inserts pipe 82 near input pipe 81 side, described Taper is inserted pipe 82 and is connected resonance series cavity volume I84 and resonance series cavity volume II83.Described taper is inserted The wider place of pipe 82 opening is positioned at resonance series cavity volume II83, and its taper angle is 10 °, described taper Mutually stagger in the position inserting pipe 82 and taper structure changes damping hole 86.

Described plug-in type H mode filter 812 is positioned at parallel resonance cavity volume 85, and itself and taper become knot Structure damping hole 86 is connected.The wave filter natural angular frequency obtained after processing by lumped-parameter method is:

$\begin{array}{cc}{\mathrm{\ω}}_r=a\sqrt{\frac{S}{L(V-LS)}}& (rad/s)\end{array}---\left(1\right)$

Velocity of sound L damping hole long S damping hole cross-sectional area V parallel resonance in a medium Cavity volume volume.

Described plug-in type cascaded H mode filter 813 is positioned at resonance series cavity volume I84 and resonance series is held In the II83 of chamber, it is also connected with taper structure changes damping hole 86.After processing by lumped-parameter method, Two natural angular frequencies of wave filter are:

${\mathrm{\ω}}_1=\frac{\sqrt{\mathrm{\π}}a}{\sqrt{2}\sqrt{k_1+k_2+\sqrt{{[k_1-k_2]}^2+\frac{4{(V_4-\frac{1}{4}\mathrm{\π}{d_3}^2{l}_3)}^2{l}_1{l}_3}{d_1^2{d}_3^2}}}}---\left(2\right)$

${\mathrm{\ω}}_2=\frac{\sqrt{\mathrm{\π}}a}{\sqrt{2}\sqrt{k_1+k_2-\sqrt{{[k_1-k_2]}^2+\frac{4{(V_4-\frac{1}{4}\mathrm{\π}{d_3}^2{l}_3)}^2{l}_1{l}_3}{d_1^2{d}_3^2}}}}---\left(3\right)$

Wherein:

$k_1=\frac{l_1(V_2+V_4-\frac{1}{4}\mathrm{\π}{d_1}^2{l}_1-\frac{1}{4}\mathrm{\π}{d_3}^2{l}_3)}{{d_1}^2}$

$k_2=\frac{(V_4-\frac{1}{4}\mathrm{\π}{d_3}^2{l}_3)l_3}{{d_3}^2}$

Velocity of sound l in a medium₁The long d of damping hole₁Damping hole diameter l₃Insert pipe range

d₃Insert pipe diameter V₂Resonance series cavity volume 1 volume V₄Resonance series cavity volume 2 volume.

Described plug-in type H mode filter 812 and plug-in type cascaded H mode filter 813 are the most symmetrically Arrange, and form plug-in type connection in series-parallel H mode filter, for broadening frequency filtering scope and make entirety More compact structure.The multiple plug-in type connection in series-parallel H mode filters of this utility model circumferentially interface distributions (only depicting 2 in figure), separates with dividing plate 820 each other.

By Fig. 5 plug-in type H mode filter and plug-in type cascaded H mode filter frequency characteristic and formula (1) (2) (3) all can find, plug-in type cascaded H mode filter has 2 natural angular frequencies, At crest, filter effect is preferable, does not the most substantially have filter effect at trough；Plug-in type H type filters Device has 1 natural angular frequency, and at crest, filter effect is preferable equally, does not the most substantially have at trough There is filter effect；Select suitable filter parameter, make the natural angular frequency of plug-in type H mode filter Just fall between 2 natural angular frequencies of plug-in type cascaded H mode filter, as shown in Figure 6, both The natural reonant frequency peak value of 3 next-door neighbours is defined, in this frequency range in certain frequency range In, no matter the fluctuating frequency of pressure is at crest or all can guarantee that preferable filter effect at trough. The bank of filters that multiple plug-in type connection in series-parallel H mode filters are constituted both can cover whole medium and low frequency section, real The entire spectrum filtering of existing 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 inner side of described elastic thin-wall 87 is provided with colloid damping layer 88.Described colloid damping layer 88 Internal layer and outer layer are respectively outer layer elastic thin-wall 81 and internal layer elastic thin-wall 82, outer layer elastic thin-wall 81 And connected by some pillars 814 are fixing between internal layer elastic thin-wall 82.Outer layer elastic thin-wall 81 and interior It is filled with the pure water 816 adding antifreezing agent, in pure water 816 in interlayer between layer elastic thin-wall 82 It is suspended with Bio-sil 815.Described colloid damping layer 88 is near one end of outlet tube 811 and shell 89 It is connected；Described colloid damping layer 88 is additionally provided with a piston 817 near one end of outlet tube 811.

Due to outer layer elastic thin-wall 81 with internal layer elastic thin-wall 82 spacing is the least and is fixed by pillar 814 Connecting, when pressure fluctuation acts perpendicularly to thin-walled, inside and outside wall produces and is close to consistent deformation, colloid Damping layer thickness is kept approximately constant, and pressure fluctuation is not had damping action；Colloid damping layer 88 The flow pulsation in 817 sensation level directions of piston, when flow pulsation strengthens, piston 817 pressurized makes Colloid damping layer shrinks, and squeezing action makes the water in colloid damping layer 88 by nanoscale transfer passage Enter micron order central void；When flow pulsation weakens, piston 817 is by back-pressure, and now colloid damps Layer expands, and the water in colloid damping layer is discharged through passage from central void.In the process, due to silicon The mechanics effect of glue 815 microchannel sorption, the roughness effect of channel surface molecular scale and chemistry are non-all Mass effect, piston follows the boundary that colloid damping layer shrinks and does " gas-liquid-solid " border in expansion process Face merit, thus flow systolic implementation is decayed, its substantially parallel R mode filter.This filter Ripple device is relative to the advantage of general liquid condenser: it is by the boundary on " gas-liquid-solid " border The mode of face merit decays flow pulsation, can absorb a large amount of mechanical energy in the case of not producing heat, And energy expenditure does not relies on piston speed, extinction efficiency is obviously improved.

This utility model can also the pulsation decay of solid line operating mode self-adaptive pressure.When hydraulic system working conditions change Time, both executive component stopped suddenly or ran, and when the opening of valve changes, can cause pipe-line system Characteristic impedance undergo mutation, so that former pipeline pressure is in time with the curve of change in location the most therewith Change, then the position of pressure peak also changes.Axial length due to wave filter of the present utility model Degree is designed as more than system main pressure pulsation wavelength, and the plug-in type connection in series-parallel H type filtering of wave filter The cavity volume length of device group, the length of c-type cavity volume wave filter and the length of elastic thin-wall 87 and wave filter axle Line length is equal, it is ensured that pressure peak position is constantly in the effective range of wave filter；And Taper structure changes damping hole 86 is opened on elastic thin-wall 87, is uniformly distributed in the axial direction, in elasticity Pipe 82 is inserted in the taper uniformly having multiple identical parameters in the axial direction of dividing plate 810, and taper structure changes hinders Buddhist nun hole 86 and taper are inserted pipe 82 position and are mutually staggered so that pressure peak change in location is to wave filter Performance have little to no effect, it is achieved thereby that operating mode adaptive-filtering function.In view of three kinds of filtering Structure axial dimension and wave filter are suitable, and this bigger size also ensure that hydraulic filter possesses relatively Strong pressure fluctuation damping capacity.

Hydraulic filter of the present utility model is used to carry out the method for hydraulic pulsation filtering 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 plug-in type connection in series-parallel H mode filter group, by taper structure changes damping hole, taper Insert pipe and fluid produces resonance, 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 Plug-in type connection in series-parallel H mode filter length, c-type cavity volume filter length and elastic thin-wall 87 length Equal with filter length, make pressure peak position be constantly in the effective range of wave filter, real The filtering of pressure fluctuation when existing system condition 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.

Galling abrasive particle in machine oil according to its electromagnetic property can be divided into ferromagnetics microgranule (as Ferrum) and non-ferromagnetic material microgranule (such as copper, aluminum).Ferromagnetics microgranule strengthens the equivalent electric of cell winding Sense, non-ferromagnetic material microgranule then weakens the equivalent inductance of cell winding.When two kinds of microgranules pass through simultaneously During detection coil, this monitoring device will lose efficacy.To this end, this utility model is with separating adsorption module 2 Separate both microgranules.Described separation adsorption module 2 is by the mechanical centrifugal module 21 being sequentially connected with, magnetic Change module 22, magnetic suck module 23, electrification module 24 and electric adsorption module 25 to form.

Wherein, described mechanical centrifugal module 21 makes fluid under the action of the centrifugal, the solid that quality is bigger Granule is thrown toward cavity wall, and it uses the mode of energy loss, and its design principle is as follows: set in the duct Put the flow deflector of the distortion of certain altitude and length, and make blade face tangent line angled with axis, because of Pipe flow border changes and fluid can be made to produce spiral flow in pipes, and this spiral flow can be analyzed to around pipe axle Circumferential flow and axial straight flowing, the particulate matter carried in fluid produces off-axis alignment heart spiral fortune Dynamic.This eddy flow centrifugal device 21 by eddy flow tube wall the 211, first flow deflector the 212, second flow deflector 213, Several parts compositions such as motor 214 and flow transducer 215, described motor 214 and stream Quantity sensor 215 is electrically connected to ECU1.

Wherein, described first flow deflector 212 is provided with 3, and these 3 first flow deflectors 212 are along tube wall 211 inner peripherys are uniformly distributed every 120 °, its laying angle (the first flow deflector 212 and eddy flow tube wall 211 Between angle) be set to 18 °, to ensure optimal tangential flowing.Described second flow deflector 213 and One flow deflector 212 structure is identical, after it is arranged on the first flow deflector 212, and and the first flow deflector 212 Staggering 60 ° and be connected in tube wall 211, its laying angle is set to 36 DEG C, is used for reducing resistance and strengthening week Intensity to flowing.It addition, the 3rd or more water conservancy diversion can be arranged the most again according to actual separation effect Sheet, laying angle gradually increases.Described motor 214 connects and drives the first flow deflector 212 and Two flow deflectors 213, to regulate laying angle, thus can obtain more preferable centrifugal effect, know and make water conservancy diversion Sheet 212,213 adapts to different operating modes.During described flow transducer 215 is arranged in tube wall 211 Centre, the ECU1 numerical analysis cyclonic separation effect by reading flow quantity sensor 215, and control accordingly Motor 214 processed, motor 214 regulates the laying angle of each flow deflector 212,213, to obtain More separating effect.

Further, the long limit of described first flow deflector 212 is connected with tube wall 211, minor face 213 edge The axis of tube wall 211 extends；For reducing resistance, its leading edge frustrates into obtuse；For avoiding streaming, trailing edge It is processed into wing；Its height is 0.4 times of tube wall 211 diameter, makes the spiral flow of formation have bigger Intensity；1.8 times of a length of tube wall 211 diameter, to ensure the bigger sphere of action to fluid.

Described magnetized module 22 is force-magnetized by the ferromagnetic metal wear particle that carries in fluid, And make micron-sized wear particle aggregate into bulky grain, the output signal strength of sensor can be improved. Described magnetizing assembly 22 is by aluminum matter pipeline 221, some windings 222, iron shell 223 and flange 224 compositions.Wherein, described aluminum matter pipeline 221 makes fluid flow there through and by magnetization treatment, And the pcrmeability of aluminum is the lowest, can make pipeline 221 obtains higher magnetic field intensity.

Described some windings 222 are rotating around outside aluminum matter pipeline 221, by a diameter of about 1.0mm Copper wire coating insullac is made.Described iron shell 223 is coated on aluminum matter pipeline 221, irony Material can mask most magnetic flux.Described flange 224 is welded on the two ends of aluminum matter pipeline 221.

Described magnetic suck module 23 is polymerized big microgranule for adsorpting aggregation in the magnetization of near-wall, its Homopolarity adjacent type absorbing ring can be used.This homopolarity adjacent type absorbing ring is by aluminium ring shape pipeline 231, just To parts compositions such as solenoid 232, reverse solenoid 233 and irony magnetic conduction caps 234.Wherein, Described forward solenoid 232 and reverse solenoid 233 are respectively arranged in aluminium ring shape pipeline 231 also By ECU1 control, both are connected with electric current in opposite direction so that forward solenoid 232 and reverse spiral shell Spool 233 adjacent produces like pole.Described irony magnetic conduction cap 234 is arranged in aluminium ring shape pipeline On the inwall of 231, it is positioned at forward solenoid 232 and reverse solenoid 233 adjacent, Yi Jizheng To solenoid 232 and the intermediate point of reverse solenoid 233 axis.

The design principle of described homopolarity adjacent type absorbing ring is as follows: energising forward solenoid 232, reversely Solenoid 233, adjacent forward solenoid 232, reverse solenoid 233 are connected with electricity in opposite direction Stream so that forward solenoid 232, reverse solenoid 233 adjacent produce like pole；Meanwhile, Aluminium ring shape pipeline 231 can improve magnetic circuit, strengthens the magnetic field intensity at inner-walls of duct, strengthens irony The magnetic conduction cap 234 capture absorbability to granule.Each forward solenoid 232, reverse solenoid 233 Electric current is directly controlled by ECU1, can be different with concentration and change, to obtain according to the size of granule Obtain optimal adsorption performance.

Further, the homopolarity adjacent type absorption that described magnetic suck module 23 may be used without charged hammer Ring, the homopolarity adjacent type absorbing ring of this charged hammer by aluminium ring shape pipeline 231, forward solenoid 232, Reverse solenoid 233, irony magnetic conduction cap 234, dividing plate 235, electric shock hammer 236 and electric magnet 237 Form Deng parts.Wherein, described forward solenoid 232 and reverse solenoid 233 are respectively arranged in aluminum In matter circulating line 231 and by ECU1 control, both are connected with electric current in opposite direction so that forward Solenoid 232 and reverse solenoid 233 adjacent produce like pole.Described irony magnetic conduction cap 234 Being arranged on the inwall of aluminium ring shape pipeline 231, it is positioned at forward solenoid 232 and reverse solenoid 233 adjacents and forward solenoid 232 and the intermediate point of reverse solenoid 233 axis.Described Electric shock hammer 236 and electric magnet 237 are between dividing plate 235.Described electric magnet 237 connects and can push away Galvanic electricity hammer 236, makes electric shock hammer 236 percussion aluminium ring shape pipeline 232 inwall.Described ECU1 electricity Property connects and controls forward solenoid 232, reverse solenoid 233 and electric magnet 237.

The design principle of the homopolarity adjacent type absorbing ring of described charged hammer is as follows: energising forward solenoid 232, reverse solenoid 233, adjacent forward solenoid 232, reverse solenoid 233 are connected with direction Contrary electric current so that forward solenoid 232, reverse solenoid 233 adjacent produce like pole； Meanwhile, aluminium ring shape pipeline 231 can improve magnetic circuit, strengthens the magnetic field intensity at inner-walls of duct, increases The strong irony magnetic conduction cap 234 capture absorbability to granule.Each forward solenoid 232, reverse helical Pipe 233 electric current is directly controlled by ECU1, can be different with concentration and change according to the size of granule, To obtain optimal adsorption performance.And by the setting of electric shock hammer 236, prevent granule at irony magnetic conduction cap Bulk deposition at 234, affects adsorption effect.Now, electric shock hammer 236 is controlled by electric magnet 237 Tap the inwall of pipeline 231 so that adsorbed granule scatter to both sides.Meanwhile, pipe is being cleaned During road 231, the percussion of electric shock hammer 236 can also improve cleaning performance.

After described magnetic suck module 23 has been adsorbed, ECU1 controls electric magnet power-off, paramagnetism aluminum matter Pipeline loses magnetism, be attached to magnetic polymeric bulky grain on inner-walls of duct will be disengaged from tube wall and with low speed with Fluid enters electrification module 24 along tube wall.

Described electrification module 24 makes the non-ferromagnetic metal wear particle in hydraulic oil charged, if its by Dry electrode 241 and an electrode controller 242 form.Described some electrodes 241 are installed on hydraulic tube On road 9, it is respectively connecting to electrode controller 242.Described electrode controller 242 be electrically connected with to Electrode 241 applies voltage, makes the particulate matter in fluid charged.

Non-ferromagnetic metal wear particle in fluid is adsorbed on tube wall by described electric adsorption module 25, It is made up of aluminum matter pipeline 251, positive plate 252, minus plate 253 and pole plate controller 254. Wherein, described positive plate 252, minus plate 253 are separately positioned on aluminum matter pipeline 251, and in phase To setting；Described positive plate 252, minus plate 253 are respectively and electrically connected on pole plate controller 254； Described pole plate controller 254 is electrically connected to ECU1, and by ECU1 control.

The operation principle of described electric adsorption module 25 is as follows: charged non-ferromagnetic material metallic wear particles Electric adsorption module 25, two electricity of the negative and positive of electric adsorption module 25 are flowed into speed V along tube wall with fluid Pole 525,253 is controlled to produce the uniform electric field vertical with speed V direction by pole plate controller 254, Then charged corpuscle is by being perpendicular to acting on of the electric field force of velocity attitude in electric field is centrifuged module, makes band Electricity granule does parabolic motion to pole plate under this force, and charged corpuscle adsorbs it along the direction of motion Its microgranule forms polymeric macroparticle.This parabolic motion specifically refers to charged corpuscle and is axially following fluid Move along a straight line, radially then do at the uniform velocity or variable motion under electric field force effect, by pole plate controller 254 change electric field intensity can change movement velocity, makes charged polymeric bulky grain be adsorbed onto on tube wall. After having adsorbed, when ECU1 controlling plate controller 254 power-off, it is attached to magnetic on inner-walls of duct Property polymeric macroparticle will be disengaged from tube wall and with low speed with fluid along tube wall enter rotate moulding module 3.

The moulding module of described rotation 3 is for improving the sensitivity of detection.Research shows: cell winding Inductance rate of change be directly proportional to the cube of abrasive particle radius.Meanwhile, the form of magnetizing mediums more trends towards Elongate, its demagnetizing factor is the least, and the intensity of magnetization is the biggest, and magnetizing field field intensity is the biggest.To sensor etc. The change impact of effect inductance is the biggest.The moulding module of this rotation 3 by aluminum matter pipeline 31, some windings 32, Several parts compositions such as iron shell 33, flange 34 and the moulding current output module of some rotations 35. Wherein, described some windings 32 are rotating around outside aluminum matter pipeline 31；Described iron shell 33 is coated with On aluminum matter pipeline 31；Described flange 34 is welded on the two ends of aluminum matter pipeline 31；Each rotation is moulded Shape current output module 35 is connected to a winding 32.

The design principle of the moulding module of described rotation 3 is as follows: polymeric macroparticle enters rotation with fluid and moulds After shape module 3, ECU1 controls to rotate moulding current output module 35, makes the moulding electric current of rotation export Flowing through three-phase symmetrical electric current in module 35, this electric current produces rotating excitation field in aluminum matter pipeline 31.Magnetic Change granule to be acted on by magnetic field force under rotating excitation field effect, and the most spirally Advancing, magnetic microparticles defines a lot of acicular texture along magnetic line of force direction, and these acicular textures are in magnetic field Magnetic field will be followed during rotation spin motion, specifically move along a straight line, radially axially following fluid Then follow rotating excitation field to spin motion.Adjust three-phase symmetrical electric current and can change the speed of screw And track.When the metal particle in the acicular texture and movement locus of motion meets with, it is combined with one another to Bulky grain polymer.By rotating moulding module 3, the particle diameter of the metal particle in fluid is made to increase same Time form become elongated acicular texture so that the fiber number of metal particle is also greatly increased, and further enhances The sensitivity of Double-coil type detection.

Metallic wear particles is non-uniform Distribution in oil circuit, and variations in flow patterns is sufficiently complex, when microgranule is big When little and material changes, its changes of magnetic field caused is the faintest, if detection Magnetic field inhomogeneity will be led Cause serious measurement error, make detection sensitivity reduce；Double-coil type detection of particulates requires detection simultaneously The characteristic of line coil and a reference coil is completely the same, and this is usually extremely difficult to, and needs design for this Detection coil 7 has the function of on-line automatic regulation.Specifically, the winding of described detection coil 7 Being made up of positive winding 71 and inverse winding 72, each winding is connected to an exciting current output module 73, should Exciting current output module 73 is controlled by ECU module, and its digital potentiometer used is AD5206, There is the output of 6 passages, can and ECU1 between realize single bus data transmission.ECU is by single Bus realizes current settings and the output of the polylith exciting current output module 73 to magnetization winding.Fortune Put AD8601 and metal-oxide-semiconductor 2N7002 and achieve the output of high-precision voltage follow by negative feedback. Constant High-current output have employed amplifier OPA 549 of the high voltage of Texas Instrument (TI), big electric current.

The operation principle of described detection coil 7 is as follows: in order to produce the magnetic field in same polarity direction the most simultaneously Making up the magnetic field that breach causes unbalanced, positive winding 71 is identical with the current characteristics in inverse winding 72, The axis direction of conduit under fluid pressure 9 is arranged with multipair forward and reverse winding, is exported by different exciting currents Module 73 controls electric current, it is possible to form the uniform magnetic field of system requirements.

Further, described detection coil 4, reference coil 5 are in series, and both form a sensing Device.When in detection coil 4 without abrasive particle, owing to detection coil 4 is identical with reference coil 5 characteristic, There is no output voltage.And when abrasive particle enters detection coil 4, then cause the change of sensor output voltage Changing, this variable quantity is metastable.When in fluid by there being metal bulky grain, cause magnetic field Disturbance, causes sensor coil to produce induction electromotive force.Utilize ferromagnetics and non-ferromagnetic material metal particle pair The otherwise impact in former magnetic field, causes phase of output signal contrary, can distinguish wear particle type in fluid； Magnetic media grain is the biggest, and fiber number is the biggest, and the biggest on magnetic field impact, the amplitude of output signal is the biggest, inspection The sensitivity surveyed is the highest.Utilize ferromagnetics and the non-ferromagnetic material metal particle otherwise impact to former magnetic field, Cause phase of output signal contrary, wear particle type in fluid can be distinguished, thus it is consistent to realize signal Property good, reliability is high, detection signal is strong and error is little Double-pipe plug-in type structure changes twin coil fluid exists Line monitoring system.

Due to the existence of hysteresis, after ferromagnetic material is magnetized into saturation, even if cancelling additional Magnetic field, the magnetic induction in material still returns less than zero point, needs externally-applied magnetic field demagnetization.In order to prevent Magnetic microparticles enters hydraulic circuit, and sensitive to pollution Hydraulic Elements cause damage, devise demagnetization module 9, including remanent magnetism sensor and demagnetizer.ECU1 is according to the detection of demagnetizer exit remanent magnetism sensor Value controls the demagnetization intensity of demagnetizer.The demagnetization method herein used is electromagnetism demagnetization, and method is to pass through The opposing magnetic field that to add one suitable so that the magnetic induction in material comes back to zero point, and magnetic field is strong Degree or electric current must invert in order and gradually reduce.

The concrete grammar using above-mentioned supervising device to be monitored hydraulic oil is as follows:

1), the fluid in fluid pressure line 9 passes through wave filter 8, and wave filter 8 is decayed in hydraulic system The fluctuation pressure of high, medium and low frequency range, and suppression flowed fluctuation；

2), fluid enters the mechanical centrifugal module 21 separating adsorption module 2 afterwards, makes the mill in fluid Damaging aggregation of particles and realize initial centrifugation, the polymeric macroparticle making quality bigger gets rid of to near-wall；

3), make ferromagnetic metal polymeric macroparticle force-magnetized by magnetized module 22；

4), magnetic suck module 23 adsorbs the big microgranule of magnetized metal polymerization；

5), by electrification module 24, the non-ferromagnetic metal wear particle charged polymeric in fluid is made；

6), charged particle flows into electric adsorption module 25 with speed v subsequently, and electric adsorption module 25 is by ECU1 Controlling to produce the uniform magnetic field vertical with speed v direction, charged particle is subject to vertical in segregation apparatus In velocity attitude and the effect of the Loulun magnetism of magnetic direction, make charged particle under this force to Aluminum matter vessel wall motion, so that the non-ferromagnetic metal wear particle in fluid " separates " from fluid Out, absorption is on tube wall.

7), after magnetic suck and electro-adsorption to enough particle concentrations, ECU1 first controls electro-adsorption mould Block 25 by direction of an electric field the most reversely, then cancels electric field, then adsorb the non-ferromagnetic metal on tube wall Wear particle starts to depart from tube wall slowly enter the moulding module 3 of rotation from static, and electric adsorption module 25 The most then recover original electric field.Meanwhile, ECU1 controls magnetic suck module 23 power-off, paramagnetism aluminum Matter pipeline loses magnetism, and is attached to magnetic polymeric bulky grain on inner-walls of duct and will be disengaged from tube wall, and electrify mould The power-off of block 24, ferromagnetic particle flows through electrification module 24 and electric adsorption module 25 with low speed with fluid, Enter and rotate moulding module 3.Subsequently, magnetic suck module and the electrification original duty of module recovery.

8), charged nonferromagnetic microgranule and magnetized ferromagnetic particle successively enter and rotate moulding module 3, now ECU1 flows through three-phase symmetrical electric current in controlling three-phase symmetric winding, and this electric current is at aluminum matter pipeline Interior generation rotating excitation field.Magnetized particles is acted on by magnetic field force under rotating excitation field effect, and at this Spirally advancing under the effect of power, magnetic microparticles defines a lot of acicular texture along magnetic line of force direction, These acicular textures will be followed magnetic field and be spinned motion when magnetic field rotating, when motion acicular texture and When metal particle on movement locus meets with, it is combined with one another to bulky grain polymer.

9), by rotating moulding module 3, the particle diameter of the metal particle in fluid is made to increase form simultaneously Become elongated acicular texture so that the fiber number of metal particle is also greatly increased, and further enhancing two-wire The sensitivity of ring type detection.This two based fine particles is with low speed, high concentration, bulky grain and big fiber number subsequently State enters detection coil 4 in batches, and ECU1 controls exciting current and keeps the field homogeneity of detection coil 4 Property, simultaneously because the power of test of Ferrous particles is greater than copper granule by the inductance of same model Power of test, need ECU regulation exciting current to compensate this difference, with keep output concordance. Flow parameter when flow transducer 7 is for detecting measurement, for measurement result correction.

10), time in detection coil 4 without abrasive particle, there is certain fluctuation in the total null voltage of sensor, Owing to detection coil 4 is identical with reference coil 5 characteristic, there is no output voltage.And when abrasive particle enters inspection During test coil, then causing the change of sensor output voltage, this variable quantity is metastable.When Time in fluid by there being metal bulky grain, cause disturbance of magnetic field, result in induction electromotive force.Utilize Ferromagnetics and the non-ferromagnetic material metal particle otherwise impact to former magnetic field, cause phase of output signal phase Instead, wear particle type in fluid can be distinguished；Magnetic media grain is the biggest, and fiber number is the biggest, to magnetic field shadow Ringing the biggest, the amplitude of output signal is the biggest, and the sensitivity of detection is the highest.Utilize ferromagnetics and non-ferromagnetic The matter metal particle otherwise impact to former magnetic field, causes phase of output signal contrary, can distinguish in fluid Wear particle type.Thus realize that signal conformance is good, reliability is high, detection signal is strong and error is little Double-pipe plug-in type structure changes twin coil fluid online monitoring system.

11), eliminate magnetic particle magnetic by demagnetization module 9, prevent magnetic microparticles from entering hydraulic circuit, Sensitive to pollution Hydraulic Elements cause damage.

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. use structure changes filtering, separate and moulding twin coil Oil Monitoring system, it is arranged on fluid pressure line, it is characterised in that: include wave filter, separate adsorption module, rotate moulding module, detection coil, reference coil, demagnetization module, flow transducer and ECU；Wherein, described wave filter, separate adsorption module, rotate moulding module, detection coil, flow transducer, demagnetization module are successively set on fluid pressure line；Described detection coil, reference coil are in series；Described ECU is electrically connected with and controls wave filter, separates adsorption module, rotates moulding module, detection coil, reference coil, demagnetization module and flow transducer；Described wave filter includes input pipe, shell, outlet tube, elastic thin-wall, plug-in type H mode filter and plug-in type cascaded H mode filter；Wherein, described input pipe is connected to one end of shell；Described outlet tube is connected to the other end of shell；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；Resonance series cavity volume I, resonance series cavity volume II and parallel resonance cavity volume is formed between described elastic thin-wall and shell；Separated by an elastic baffle between described resonance series cavity volume I and resonance series cavity volume II；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；Described elastic baffle is provided with taper near input tube side and inserts pipe, and pipe connection resonance series cavity volume I and resonance series cavity volume II is inserted in described taper；Described plug-in type H mode filter is positioned at parallel resonance cavity volume, and it is connected with taper structure changes damping hole；Described plug-in type 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 plug-in type H mode filter and plug-in type cascaded H mode filter are axially symmetrical set, and form plug-in type connection in series-parallel H mode filter；Described separation adsorption module is made up of the mechanical centrifugal module being sequentially connected with, magnetized module, magnetic suck module, electrification module and electric adsorption module.

2. employing structure changes filtering as claimed in claim 1, separation and moulding twin coil Oil Monitoring system, 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 its 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；The inner side of described elastic thin-wall is provided with colloid damping layer；The internal layer of described colloid damping layer and outer layer are respectively outer layer elastic thin-wall and internal layer elastic thin-wall, are connected by some pillars are fixing between outer layer elastic thin-wall and internal layer elastic thin-wall；It is filled with, in interlayer between described outer layer elastic thin-wall and internal layer elastic thin-wall, the pure water adding antifreezing agent, in pure water, is suspended with Bio-sil；Described colloid damping layer is connected with shell near one end of outlet tube；Described colloid damping layer is provided with a piston near one end of outlet tube.

3. employing structure changes filtering as claimed in claim 1, separation and moulding twin coil Oil Monitoring system, it is characterised in that: described mechanical centrifugal module uses eddy flow to be centrifuged module；Described eddy flow is centrifuged module and includes eddy flow tube wall, the first flow deflector, the second flow deflector, motor and flow transducer；Wherein, described first flow deflector is provided with 3, and these 3 first flow deflectors are uniformly distributed along tube wall inner periphery every 120 °, and its laying angle is set to 18 °；Described second flow deflector and the first flow deflector structure are identical, after it is arranged on the first flow deflector, and and the first flow deflector stagger 60 ° and be connected in tube wall, its laying angle is set to 36 DEG C；The long limit of described first flow deflector is connected with tube wall, and minor face extends along the axis of tube wall；Its leading edge frustrates into obtuse, and trailing edge is processed into wing, and its height is 0.4 times of tube wall diameter, 1.8 times of a length of tube wall diameter；Described motor connects and drives the first flow deflector and the second flow deflector, to regulate laying angle；Described flow transducer is arranged on the central authorities in tube wall.

4. employing structure changes filtering as claimed in claim 1, separation and moulding twin coil Oil Monitoring system, it is characterised in that: described magnetized module includes aluminum matter pipeline, some windings, iron shell and flange；Wherein, described some windings are rotating around 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.

5. employing structure changes filtering as claimed in claim 1, separation and moulding twin coil Oil Monitoring system, it is characterized in that: described magnetic suck module uses 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.

6. employing structure changes filtering as claimed in claim 1, separation and moulding twin coil Oil Monitoring system, it is characterized in that: described magnetic suck module uses the homopolarity adjacent type absorbing ring of charged hammer, 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.

7. employing structure changes filtering as claimed in claim 1, separation and moulding twin coil Oil Monitoring system, it is characterised in that: described electrification module includes some electrodes and an electrode controller；Described some electrodes are installed on fluid pressure line, and it is respectively connecting to electrode controller.

8. employing structure changes filtering as claimed in claim 1, separation and moulding twin coil Oil Monitoring system, it is characterised in that: described electric adsorption module includes aluminum matter pipeline, positive plate, minus plate and pole plate controller；Wherein, described positive plate, minus plate are separately positioned on aluminum matter pipeline, and in being oppositely arranged；Described positive plate, minus plate are respectively and electrically connected on pole plate controller；Described pole plate controller is electrically connected to ECU, and by ECU control.

9. employing structure changes filtering as claimed in claim 1, separation and moulding twin coil Oil Monitoring system, it is characterised in that: the moulding module of described rotation includes aluminum matter pipeline, some windings, iron shell, flange and the moulding current output module of some rotations；Wherein, described some windings are rotating around 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；The moulding current output module of each rotation is connected to a winding.

10. employing structure changes filtering as claimed in claim 1, separation and moulding twin coil Oil Monitoring system, it is characterized in that: the winding of described detection coil is made up of positive winding and inverse winding, each winding is connected to an exciting current output module, and this exciting current output module is controlled by ECU module.