CN105842305A - Method for monitoring wear particles with hydraulic filtering, centrifugal separation and adjacent capacitors - Google Patents

Abstract

The invention relates to a method for monitoring wear particles with hydraulic filtering, centrifugal separation and adjacent capacitors. Monitoring of wear particles is conducted through a filter, a temperature control module, a magnetization module, a mechanical centrifugal module, a rotating magnetic field centrifugal module, an absorption module, an adjacent capacitor particle monitoring module and a degaussing module in sequence; a variable structure work condition self-adapting filter is adopted for the filter, and one end of the filter is provided with an oil liquid inlet; one end of the degaussing module is provided with an oil liquid outlet. An adjacent capacitor sensor technology based on the capacitor edge effect is introduced, and non-intrusive and no-constraint monitoring of the wear particles is achieved; the wear particles in oil liquid are magnetized and aggregated into large particles through the magnetization module, the mechanical centrifugal module and the rotating magnetic field centrifugal module, move to the position near the pipe wall and are absorbed by the absorption module, so that strength of output monitoring signals of adjacent capacitor sensors is improved; the temperature control module is utilized, polar plate layer structures of the adjacent capacitor sensors are designed reasonably, noise is inhibited, and the overall performance of an adjacent capacitor sensor monitoring device is optimized.

Description

By the wear particle monitoring method of Hydraulic filtration, centrifugation and adjacent capacitor

[technical field]

The present invention relates to the wear particle on-line monitoring method in a kind of fluid pressure line fluid, be specifically related to The wear particle monitoring method of a kind of Hydraulic filtration, centrifugation and adjacent capacitor, belongs to hydraulic pressure system System technical field.

[background technology]

Wear particle in hydraulic system oil liquid not only can make kinematic pair produce abrasive wear but also can So that the relative motion of kinematic pair is obstructed and is caused control component actuation malfunctioning.Statistics both domestic and external Showing, hydraulic machinery 70% fault is derived from the particle contamination of fluid.Therefore, micro-to the abrasion in fluid Grain carries out on-line monitoring and has become one of important channel reducing abrasion and hydraulic system fault.

Capacitance sensor is applied to the pollution prison of machine fluid because it is easy to make, with low cost Survey.Patent documentation 1 (Chinese invention patent Authorization Notice No. CN 101435788 B) discloses a kind of base In online oil liquid monitoring sensor and the system thereof of dielectric constant measurement, the sensor of this invention includes propping up Seat and be fixed on inside three poles, three poles constitute differential cylindrical capacitor, can monitor The minor variations of sensor capacitance value, thus the anti-minor variations pushing away fluid dielectric constant, and then realize Enforcement to contamination level of oil liquid is monitored.Sensor pole in this monitoring method is immersed in fluid, makes Become the change of fluid fluidised form, have impact on certainty of measurement；It is heavy that fluid can be formed on sensor pole surface Long-pending oil film, not only causes certainty of measurement to decline, and the most also brings sensor to clean problem.

Document 2 (Zhao Xinze etc., Wuhan Univ. of Water Conservancy and Electric Power's journal, 1999 (3)) public Opened a kind of Probe with Capacitor Sensor Used in Oil Monitoring, this probe by a cylindrical glass pipe be close to The two halves circular electrode composition of this pipe outer wall, it is substantially parallel plate capacitor sensor.This capacitance sensing Device excitation pole plate is retrained by conduit under fluid pressure diameter, owing to conduit under fluid pressure diameter is relative with receiving polar plate spacing Relatively big, this transducer sensitivity is not ideal enough.

Meanwhile, the wear particle of prior art carries out the fluid big ups and downs in on-line monitoring equipment, meeting Cause Monitoring Data to fluctuate widely and cause monitoring unsuccessfully.

Therefore, for solve above-mentioned technical problem, a kind of innovation of necessary offer with Hydraulic filtration, The wear particle monitoring method of centrifugation and adjacent capacitor, of the prior art described scarce to overcome Fall into.

[summary of the invention]

For solving above-mentioned technical problem, it is an object of the invention to provide one Hydraulic filtration, be centrifuged Separating and the wear particle monitoring method of adjacent capacitor, it uses non-invasive metering system, to tested The nothing of amount is restrictive, signal is strong and highly sensitive, low cost, environmental suitability are strong in monitoring.

For achieving the above object, the technical scheme that the present invention takes is: with Hydraulic filtration, centrifugation With the wear particle monitoring method of adjacent capacitor, it uses a kind of monitoring device, and this equipment includes filtering Device, temperature control module, magnetized module, mechanical centrifugal module, rotating excitation field be centrifuged module, adsorption module, Adjacent capacitor particulate matter monitoring module and demagnetization module；Wherein, described wave filter, temperature control module, magnetic Change module, mechanical centrifugal module, rotating excitation field are centrifuged module, adsorption module, adjacent capacitor microgranule prison Survey module and demagnetization module is sequentially connected with；One end of described wave filter is provided with fluid entrance, and it includes defeated Enter pipe, shell, outlet tube, corrugated tube and S type elastic thin-wall；Wherein, described input pipe connects One end in shell；Described outlet tube is connected to the other end of shell；Described S type elastic thin-wall is along outward The radial direction of shell is installed in shell, forms expansion chamber and contraction chamber in it；Described input pipe, outlet tube It is collectively forming a S type cavity volume wave filter with S type elastic thin-wall；Described S type elastic thin-wall and shell it Between formed cylinder resonance cavity volume；Some tapers are uniformly had in the axial direction of described S type elastic thin-wall Structure changes damping hole, taper structure changes damping hole connection resonance cavity volume；Described taper structure changes damping hole It is made up of cone shaped elastic damping hole pipe and slot apertures；Described corrugated tube is wound on outside resonance cavity volume in the shape of a spiral, Insert pipe with resonance cavity volume by multiple tapers to connect；Described corrugated tube passes through some arms between respectively enclosing Connection, arm is provided with switch；Described corrugated tube and resonance cavity volume composition plug-in type spiral isomery series connection H mode filter；One end of described demagnetization module is provided with fluid outlet, and it is by remanent magnetism sensor and demagnetization Device forms；

It comprises the steps:

1), the fluid in fluid pressure line carries wear particle by wave filter, by filter attenuation liquid The fluctuation pressure of the high, medium and low frequency range in pressure system, and suppression flowed fluctuation；

2), oil liquid temperature is controlled by temperature control module constant at 42 DEG C；

3), magnetized module is force-magnetized by the wear particle that carries in fluid, makes micron-sized abrasion Particle aggregation becomes bulky grain

4), magnetization aggregated particles initial centrifugation in eddy flow is centrifuged module；

5), rotating excitation field module carries out secondary centrifuging to magnetization aggregated particles；

6), adsorption module adsorbs the magnetization polymerization being gathered in near-wall after rotated magnetic field module is centrifuged Big microgranule；

7), by wear particle situation in adjacent capacitor particulate matter monitoring module online monitoring fluid pressure line；

8), demagnetization module is to magnetized particles demagnetization.

The present invention enters one by the wear particle monitoring method of Hydraulic filtration, centrifugation and adjacent capacitor 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 cavity volume, and its taper angle is 10 °；Described taper structure changes damping hole The Young's modulus of cone shaped elastic damping hole pipe is bigger than the Young's modulus of elastic thin-wall, can be with fluid pressure Change 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 corrugated tube, its Taper angle is 10 °.

The present invention enters one by the wear particle monitoring method of Hydraulic filtration, centrifugation and adjacent capacitor Step is: described temperature control module includes heater, cooler and temperature sensor；Described heater uses The lubricating oil heater of the Chongqing gold letter with temperature detection；Surface evaporative air cooling selected by described cooler Device, the finned tube of cooler selects KLM type finned tube；Temperature sensor uses platinum resistance temperature sensing Device.

The present invention enters one by the wear particle monitoring method of Hydraulic filtration, centrifugation and adjacent capacitor Step is: described magnetized module includes aluminum matter pipeline, some windings, iron shell, flange and some Magnetizing current output module；Wherein, described some windings rotating around outside aluminum matter pipeline, each winding by Positive winding and inverse winding form, and the size of current in positive winding and inverse winding is equal；Described iron shell It is coated on aluminum matter pipeline；Described flange welding is at the two ends of aluminum matter pipeline；Each magnetizing current exports Module is connected to a winding.

The present invention enters one by the wear particle monitoring method of Hydraulic filtration, centrifugation and adjacent capacitor Step is: 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 °, Its laying angle is set to 18 °；Described second flow deflector and the first flow deflector structure are identical, and it is arranged on After one flow deflector, and and the first flow deflector stagger 60 ° and be connected in tube wall, its laying angle is set to 36 ℃；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 Frustrating into obtuse, trailing edge is processed into wing, and its height is 0.4 times of tube wall diameter, and a length of tube wall is straight 1.8 times of footpath；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.

The present invention enters one by the wear particle monitoring method of Hydraulic filtration, centrifugation and adjacent capacitor 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 present invention enters one by the wear particle monitoring method of Hydraulic filtration, centrifugation and adjacent capacitor Step is: described adsorption module uses homopolarity adjacent type absorbing ring；Described homopolarity adjacent type absorbing ring includes Aluminium ring shape pipeline, forward solenoid, reverse solenoid and irony magnetic conduction cap；Described forward helical Pipe and reverse solenoid are respectively arranged in aluminium ring shape pipeline, and both are connected with electric current in opposite direction, Forward solenoid and reverse solenoid adjacent is made to produce like pole；Described irony magnetic conduction cap is arranged On the inwall of aluminium ring shape pipeline, its be positioned at forward solenoid and reverse solenoid adjacent and Forward solenoid and the intermediate point of reverse solenoid axis.

The present invention enters one by the wear particle monitoring method of Hydraulic filtration, centrifugation and adjacent capacitor Step is: described adsorption module uses the homopolarity adjacent type absorbing ring of charged hammer；Described charged hammer Homopolarity adjacent type absorbing ring includes that aluminium ring shape pipeline, forward solenoid, reverse solenoid, irony are led Magnetic cap, dividing plate, electric shock hammer and electric magnet；Described forward solenoid and reverse solenoid are respectively arranged In aluminium ring shape pipeline, both are connected with electric current in opposite direction so that forward solenoid and reverse spiral shell Spool adjacent produces like pole；Described irony magnetic conduction cap is arranged in the inwall of aluminium ring shape pipeline On, it is positioned at forward solenoid and reverse solenoid adjacent and forward solenoid and reverse helical The intermediate point of pipe 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 strike Hit aluminium ring shape inner-walls of duct.

The present invention enters one by the wear particle monitoring method of Hydraulic filtration, centrifugation and adjacent capacitor Step is: described adjacent capacitor particulate matter monitoring module includes organic glass inner wall, ground shield, reception Pole plate, excitation pole plate and outer wall；Wherein, described machine glass inner wall, ground shield and outer wall in Tubular structure, and from-inner-to-outer is arranged successively；The thickness of described machine glass inner wall is 0.5mm, dielectric Constant is 2.5；The dielectric constant of described ground shield is 1.5-2.5, and thickness is the 1 of outer wall thickness To 2 times；Described reception pole plate, excitation pole plate are embedded in ground shield, and are positioned at machine glass Outside wall；Described reception pole plate, excitation pole plate all use Peano curve structure pole plate layer, both it Between be provided with sealing coat；The width of described sealing coat is 0.8-1 times of lucite inner wall thickness.

The wear particle monitoring method by Hydraulic filtration, centrifugation and adjacent capacitor of the present invention is also For: it includes an ECU, described wave filter, remanent magnetism sensor, demagnetizer, heater, cooler, Temperature sensor, magnetizing current output module, mechanical centrifugal module, rotating excitation field are centrifuged module, suction Attached module and adjacent capacitor particulate matter monitoring module are all electrically connected on ECU.

Compared with prior art, there is advantages that

1. the magnetized module of the multipair forward and reverse loop construction of the present invention, coil current can numeral set online Fixed, to produce the non-uniform magnetic-field that magnetization needs, make the wear particle in fluid force-magnetized and be polymerized Become bulky grain, make colloidal particles decompose simultaneously and melt and suppress air bubble growth；Mechanically and magnetically field centrifugal mold Block makes magnetic microparticles " separate " and moves to cavity wall；Poly-by the magnetization of adsorption module capture duct wall surface Close bulky grain.

2. in fluid pressure line wear particle monitoring device, introduce adjacent electricity based on electric capacity edge effect Hold sensor, by wear particle magnetizing, aggregates into bulky grain the centrifugal tube wall that is adsorbed onto to improve Granule density, increases the dielectric constant of tube wall surface fluid, greatly improves sensor output signal strong Degree the ingenious contradiction solving signal intensity and the conflict of penetration depth index.

3. in pole plate layer designs, introduce efficient frontier length and baroque Peano curve structure. In this Peano curve structure pole plate layer, excitation pole plate, reception pole plate and the curve of isolation pole plate composition All of point in square pole plate layer can be traveled through, obtain one and be full of whole square pole plate sheaf space Curve.In the case of pole plate aspect is amassed and fixed, this structure has the longest efficient frontier, maximum pole plate Area and labyrinth, obtain optimum signal intensity with this.

4. wave filter can be decayed the fluctuation pressure of the high, medium and low frequency range in hydraulic system, and can suppress Flowed fluctuation, it is ensured that monitoring result is accurate.

5. wave filter, temperature control module, magnetized module, mechanical centrifugal module, rotating excitation field be centrifuged module, The fluid pressure line wear particle monitoring technology road that adsorption module, adjacent capacitor particulate matter monitoring module combine Line, both ensure that monitoring reliability, and the overall performance simultaneously making again monitoring system is optimum.

[accompanying drawing explanation]

Fig. 1 is that monitoring with the wear particle of Hydraulic filtration, centrifugation and adjacent capacitor of the present invention sets Standby structural representation.

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

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

Fig. 4 is the H mode filter frequency characteristic constitutional diagram of single H mode filter and series connection.Wherein, Solid line is single H mode filter frequency characteristic.

Fig. 5 is the structural representation of S type cavity volume wave filter.

Fig. 6 is the cross sectional representation of S type elastic thin-wall.

Fig. 7 is the schematic diagram of taper structure changes damping hole in Fig. 3.

Fig. 7 (a) to Fig. 7 (c) is the working state figure of taper structure changes damping hole.

Fig. 8 is the structure chart of the magnetized module in Fig. 1.

Fig. 9 is the structure chart of the magnetizing coil in Fig. 8.

Figure 10 is the structure chart of the magnetizing current output module in Fig. 8.

Figure 11-1 is the horizontal schematic diagram that the eddy flow in Fig. 1 is centrifuged module.

Figure 11-2 is the radial direction schematic diagram that the eddy flow in Fig. 1 is centrifuged module.

Figure 12 is that the rotating excitation field in Fig. 1 is centrifuged module diagram.

Figure 13 be the adsorbent equipment in Fig. 1 be the structural representation of homopolarity adjacent type absorbing ring.

Figure 14 be the adsorbent equipment in Fig. 1 be that the structure of the homopolarity adjacent type absorbing ring of charged hammer is shown It is intended to.

Figure 15-1 is the radial direction semi-cutaway of the adjacent capacitor particulate matter monitoring module in Fig. 1.

Figure 15-2 is the transverse cross-sectional view of the adjacent capacitor particulate matter monitoring module in Fig. 1.

Figure 15-3 is receiving pole plate and encouraging the schematic diagram of pole plate in Figure 15-1.

Figure 15-4 is the partial enlarged drawing in Figure 15-3 at A.

Figure 16 is the connection diagram of ECU.

[detailed description of the invention]

Refer to shown in Figure of description 1 to accompanying drawing 16, the present invention be one Hydraulic filtration, from The heart separates and the wear particle monitoring device of adjacent capacitor, and it is by wave filter 8, temperature control module 1, magnetic Change module 2, mechanical centrifugal module 3, rotating excitation field are centrifuged module 4, adsorption module 5, adjacent capacitor Several parts compositions such as particulate matter monitoring module 6, demagnetization module 7 and ECU10.Wherein, described filtering Device 8, temperature control module 1, magnetized module 2, mechanical centrifugal module 3, rotating excitation field be centrifuged module 4, Adsorption module 5, adjacent capacitor particulate matter monitoring module 6 and demagnetization module 7 are sequentially connected with.

One end of described wave filter 8 is provided with fluid entrance 91, is used for defeated for hydraulic oil people's device, and can The fluctuation pressure of the high, medium and low frequency range in decay hydraulic system, and suppression flowed fluctuation, it is ensured that prison Survey result is accurate.Described wave filter 8 is by input pipe 81, shell 88, outlet tube 89, corrugated tube 83 And several parts such as S type elastic thin-wall 87 composition.

Wherein, described input pipe 81 is connected to one end of shell 88；Described outlet tube 89 is connected to The other end of shell 88.Described S type elastic thin-wall 87 is installed in shell 88 along the radial direction of shell, Expansion chamber 71 and contraction chamber 72 is formed in it.The axis of described input pipe 81 and outlet tube 89 does not exists On same axis, so can improve the filter effect of more than 10%.

Described input pipe 81, outlet tube 89 and S type elastic thin-wall 87 are collectively forming a S type cavity volume filter Ripple device, thus hydraulic system high frequency pressure pulsations of decaying.The filtering obtained after processing by lumped-parameter method Device transmission coefficient is:

$\mathrm{\γ}=\frac{1}{1+{(\frac{2\mathrm{\π}f}{Z}\·\frac{\frac{2}{3}{k}_1{D}^3+k_2{d}^{2}L}{{d_I}^2\·a})}^2}$

Velocity of sound L contraction chamber length D expansion chamber diameter Z characteristic resistance in a medium Anti-

γ transmission coefficient f pressure oscillation frequency d_IInput pipe diameter d contraction chamber Diameter

k₁Expansion chamber coefficient k₂Contraction chamber coefficient

From above formula, S type cavity volume wave filter is similar with the electric capacity effect in circuit.Different frequency When pressure pulse wave is by this wave filter, transmission coefficient is different with frequency.Frequency is the highest, then transmission Coefficient is the least, and this shows that the pressure pulse wave of high frequency is decayed the most severe when device after filtering, thus Serve the effect eliminating high frequency pressure pulsations.Meanwhile, in the S type holding cavity structure of the present invention, expand Transitions smooth between chamber and contraction chamber, contributes to reducing the system pressure damage that cavity diameter sudden change brings Lose.

The design principle of described S type cavity volume wave filter is as follows: when the flow of change is entered by input pipe During the expansion chamber of S type cavity volume, liquid stream exceedes average discharge, and the expansion chamber of expansion can absorb unnecessary liquid Stream, and when less than average discharge, release liquid stream, thus absorption pressure pulsation energy.Multiple expansion chamber Combination with contraction chamber then improves the fluctuation pressure absorbability of wave filter, namely filtering performance.Swollen Use curved surface to smoothly transit between swollen chamber and contraction chamber, then avoid the edge brought by fluid boundary sudden change Stroke pressure loss and heating.

Described S type elastic thin-wall 87 weakens hydraulic system medium-high frequency pressure by being forced to mechanical vibration Pulsation.The S type 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 S type elastic thin-walled structures coefficient h S type elastic thin-wall thickness R S type bullet Property thin-walled radius

The mass density of the Young's modulus ρ S type elastic thin-wall of E S type elastic thin-wall

The Poisson's ratio of the current-carrying factor mu S type elastic thin-wall of η S type elastic thin-wall.

Substitute into actual parameter, above formula is carried out simulation analysis it is found that the consolidating of S type elastic thin-wall 87 There is frequency generally high than the natural frequency of H mode filter, and its attenuation band also ratio H mode filter Wide.In relatively wide frequency band range, S type elastic thin-wall has good decay to pressure fluctuation Effect.Meanwhile, the S type elastic thin-wall radius in the filter construction of the present invention is bigger and relatively thin, its Natural frequency, closer to Mid Frequency, can realize effectively declining to the medium-high frequency pressure fluctuation in hydraulic system Subtract.

The design principle of described S type elastic thin-wall 87 is as follows: when producing intermediate frequency pressure fluctuation in pipeline, Double-pipe plug-in type cavity volume wave filter is more weak to the damping capacity of pressure oscillation, flows into Double-pipe plug-in type cavity volume Periodically pulsing pressure continuous action on the inside and outside wall of S type elastic thin-wall, between inside and outside wall Having the fixing connection of pillar, inside and outside S type elastic thin-wall does periodic vibration by the frequency of fluctuation pressure simultaneously, This forced vibration consumes the pressure fluctuation energy of fluid, thus realizes the filtering of Mid Frequency pressure.By void Merit principle understands, when S type elastic thin-wall consumes ability and its forced vibration of fluid pulsation pressure energy Potential energy and kinetic energy sum directly related, in order to improve Mid Frequency filtering performance, S type elastic thin-wall Radial design is much larger than pipe radius, and the thickness of thin-walled is less, and representative value is less than 0.1mm.

Further, the resonance forming cylinder between described S type elastic thin-wall 87 and shell 88 is held Chamber 85.Some taper structure changes damping holes 86 are uniformly had in the axial direction of described S type elastic thin-wall 87, To ensure all to realize plug-in type connection in series-parallel filtering in the range of whole wave filter.Taper structure changes hinders Buddhist nun hole 86 connection resonance cavity volume 85.The wider place of described taper structure changes damping hole opening is positioned at resonance and holds Intracavity, its taper angle is 10 °, for broadening frequency filtering scope, after processing by lumped-parameter method To wave filter natural angular frequency be:

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

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

Described corrugated tube 83 is wound on outside resonance cavity volume 85 in the shape of a spiral, and resonance cavity volume 85 is by many Individual taper is inserted pipe 82 and is connected.Described taper is inserted the wider place of pipe 82 opening and is positioned at corrugated tube 83, Its taper angle be 10 ° for broadening frequency filtering scope.If described corrugated tube 83 passes through between respectively enclosing Heavenly Stems and Earthly Branches pipe 810 connects, and arm 810 is provided with switch 84.Described corrugated tube 83 and resonance cavity volume 85 Composition plug-in type spiral isomery cascaded H mode filter.

From the figure 3, it may be seen that cascaded H mode filter has 2 natural angular frequencies, filter effect at crest Preferably, at trough, the most substantially do not has filter effect；Plug-in type spiral isomery cascaded H mode filter In have employed corrugated tube 83 structure of spiral isomery, corrugated tube itself has elasticity, works as hydraulic system Flow and pressure fluctuation through corrugated tube, fluid media (medium) causes the vibration of hydraulic pressure-spring system, offsets Wave energy, thus play filter action；Meanwhile, the some arms 810 between each circle corrugated tube 83 Connection or disconnection, cause interference and the superposition of ripple, thus the frequency changing cascaded H mode filter be special Property；Reasonable arrangement filter parameter and the connection quantity of arm and position, can make cascaded H type filter The trough of the frequency characteristic of device is raised, and makes wave filter have good filtering at whole medium and low frequency Duan Jun Can, 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 7.The wherein poplar of cone shaped elastic damping hole pipe 16 The Young's modulus of family name's modular ratio elastic thin-wall 7 wants big, can be with change in fluid pressure stretching or compression；Seam The Young's modulus in hole 15 is bigger than the Young's modulus of cone shaped elastic damping hole pipe 16, can be with fluid pressure It is turned on and off.Therefore when the fluctuating frequency of pressure falls at high band, S type cavity volume filter construction plays filter Ripple effect, cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Fig. 7 (a) state；And when pulsation Frequency falls when Mid Frequency, and filter construction becomes S type cavity volume filter construction and elastic thin-wall 7 is filtered Wave structure concurs, and cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Fig. 7 (a) state； When ripple frequency falls at some specific Frequency, filter construction becomes plug-in type connection in series-parallel H Mode filter, S type cavity volume filter construction and elastic thin-wall filter structure concur, Conical Projectile Property damping hole pipe 16 and slot apertures 15 all in Fig. 7 (b) state, owing to plug-in type connection in series-parallel H type is filtered The natural frequency of ripple device is designed to consistent with these particular low frequency ripple frequencies, big to fundamental frequency energy System can play preferable filter effect；When ripple frequency falls the low-frequency range beyond some characteristic frequency Time, cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Fig. 7 (c) state.Such structure changes Wave filter design both ensure that the full frequency band full working scope filtering of hydraulic system, reduces again under nominal situation The pressure loss of wave filter, it is ensured that the hydraulic pressure rigidity of system.

This wave filter 8 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.Owing to the axial length of the wave filter of the present invention sets It is calculated as more than system main pressure pulsation wavelength, and the plug-in type spiral isomery cascaded H type filter of wave filter The cavity volume length of ripple device, the length of S type cavity volume wave filter and the length of elastic thin-wall and wave filter axis Length is equal, it is ensured that pressure peak position is constantly in the effective range of wave filter；Insert The taper structure changes damping hole of formula spiral isomery cascaded H mode filter is opened on S type elastic thin-wall, edge Axis direction is uniformly distributed, and corrugated tube and the taper insertion pipe resonated between cavity volume that spiral isomery is wound around exist Axially it is uniformly distributed so that the performance of wave filter is had little to no effect by pressure peak change in location, from And achieve operating mode adaptive-filtering function.In view of three kinds of filter structure axial dimensions and wave filter phase When, this bigger size also ensure that hydraulic filter possesses stronger pressure fluctuation damping capacity.

This wave filter 8 is used to carry out the method for hydraulic pulsation filtering as follows:

1), hydraulic fluid enters S 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 S type elastic thin-wall 87 forced vibration, the pressure fluctuation energy of fluid is consumed, complete Become the filtering of intermediate frequency pressure fluctuation；

3), by plug-in type spiral isomery cascaded H mode filter, 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, Double-pipe plug-in type filter length and S type elastic thin-wall 87 length are equal with filter length, make pressure peak position be constantly in the useful effect model of wave filter Enclose, it is achieved the filtering of pressure fluctuation when 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.

Described temperature control module 1 is made up of heater, cooler and temperature sensor.This temperature control module 1 Main purpose is to provide optimal magnetization temperature about 42 DEG C for magnetizing assembly.Meanwhile, temperature is as the most main The environment noise wanted, different temperature can cause the fluid dielectric constant in fluid pressure line that notable change occurs Change, keep temperature constant that adjacent capacitive sensors can be avoided to be affected by temperature noise.

Described heater is electric heater, can use the lubricating oil of the Chongqing gold letter of band temperature detection own Heater.Cooler can be selected for remover for surface evaporation type air cooling, the advantage having water-cooled and air cooling concurrently, heat radiation Effective, use light pipe, fluid resistance is little；Cooler fin type is high wing, and finned tube selects KLM Type finned tube, good heat-transfer, thermal contact resistance is little, and fin is big with pipe contact area, and laminating is tight, Firmly, it is good to bear cold and hot sudden turn of events ability, and fin root weather-resistant performance is high；The bank of tubes of air cooler Number optimum is 8.Temperature sensor uses platinum resistance temperature sensor.

Described magnetizing assembly 2 can force-magnetized by the wear particle that carries in fluid, and make micron order Wear particle aggregate into bulky grain, the output signal strength of adjacent capacitive sensors can be improved.Meanwhile, From electromagnetic theory, magnetic field intensity is the biggest, the biggest to the captivation of ferromagnetic particle, greatly The iron granules translational speed of size is more faster than undersized iron granules, and wear particle is aggregated into big Grain also allows for later separation.

The colloidal particles carried in fluid and the dielectric constant of bubble and hydraulic oil and wear particle Dielectric constant is different from, and impacts in order to avoid monitoring adjacent capacitive sensors below, needs Non-uniform magnetic-field to be designed decomposes or removes colloidal particles and bubble.

Making Molecular alignment opinion according to magnetic field, when fluid flows through magnetic field, magnetic field is to the glue in fluid The athletic meeting of matter granule produces certain impact so that colloidal particles makees olderly flowage in pipeline, subtracts Lack being connected with each other of colloidal particles, thus play the viscosity reduction effect separating colloidal particles.Meanwhile, magnetic There is cohesiveness between the granule changed, this power limits the formation of bubble and grows up.Oil during bubble-free The magnetic line of force in liquid is evenly distributed, and is in the steady state of magnetic.When fluid has bubble, bubble local The magnetic line of force occur curved had by, the magnetic line of force of bending revert to becoming of the most uniform, parallel, steady statue Gesture, thus produce the magnetic tension pointing to bubble center, this power can limit growing up of bubble.

But magnetic field is the strongest or the most weak magnetic treating result being all difficult to obtain.When magnetic induction is a certain Time near value, magnetic treatment has optimum efficiency.Equally, the highest and the lowest viscosity reducing effect of temperature is the most bad. The viscosity reduction that decomposes of the colloidal particles in hydraulic oil needs certain temperature and magnetic field intensity, and representative value is magnetic Field intensity at about 200mT, temperature about 42 DEG C.Magnetic field to be considered during design non-uniform magnetic-field The impact that edge effect is caused, magnetic induction should be designed as relatively strong in one end that fluid flows into, and The one end flowed out at fluid is more weak, meets fluid outflow end, reduces magnetic field, alleviates edge effect impact Requirement, ensure simultaneously fluid flow into end magnetic efficiency.

The magnetizing assembly of the present invention is by aluminum matter pipeline 21, some windings 22, iron shell 23, flange 24 and some magnetizing current output modules 25 form.Wherein, described aluminum matter pipeline 21 make fluid from Wherein flow through and by magnetization treatment, and the pcrmeability of aluminum is the lowest, can make to obtain relatively in pipeline 21 High magnetic field intensity.

Described some windings 22 are rotating around outside aluminum matter pipeline 21, by the copper of a diameter of about 1.0mm Silk coating insullac is made.Each winding 22 is all separate setting, respectively by magnetizing accordingly Current output module 25 controls, and wherein electric current needs different according to system.Owing to often enclosing winding 22 is separate, and the electric current loop that its exit can cause this coil to form is not real " justifying ", and Being to have individual breach, this can cause the radial distribution of aluminum matter pipeline 21 internal magnetic field uneven, thus affects Magnetic efficiency.For solving this problem, the often circle winding 22 of this creation is all by positive winding 26 and inverse winding 27 compositions are in order to produce the magnetic field in same polarity direction and make up magnetic field that breach causes not simultaneously Equilibrium.Size of current in positive winding and inverse winding is equal.Aluminum matter pipeline 21 axis direction is arranged Show multipair forward and reverse winding, by different electric currents, in order to form the non-uniform magnetic-field of aforementioned claim.

Described iron shell 23 is coated on aluminum matter pipeline 21, and the material of irony can mask major part Magnetic flux.Described flange 24 is welded on the two ends of aluminum matter pipeline 21.

Each magnetizing current output module 25 is connected to a winding 22, and by ECU10 control, its profit Have and ECU10 real-time communication the feature of real time modifying resistance with digital potentiometer, it is achieved non-homogeneous The real-time control in magnetic field.The digital potentiometer that described magnetizing current output module 25 uses is AD5206, There is the output of 6 passages, can and ECU between realize single bus data transmission.ECU is by single Bus realizes current settings and the constant output of the polylith magnetizing current output module 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.

Described centrifugal device 3 makes fluid under the action of the centrifugal, and the magnetized particles that quality is bigger is thrown toward chamber Wall, the bubble in fluid then shifts at the central axis of pipeline under centrifugal action, and it selects rotation Wander about as a refugee core module 3.

Described eddy flow is centrifuged module 3 and uses the mode of energy loss, and its design principle is as follows: at pipeline The flow deflector of the middle distortion that certain altitude and length are set, and make blade face tangent line become certain angle with axis Degree, because of pipe flow border change can make fluid produce spiral flow in pipes, this spiral flow can be analyzed to around The circumferential flow of pipe axle and axial straight flowing, the particulate matter carried in fluid produces off-axis alignment heart spiral shell Rotation motion.This eddy flow is centrifuged module 3 by eddy flow tube wall the 31, first flow deflector the 32, second flow deflector 33, several parts such as motor 34 and flow transducer 35 composition, described motor 34 He Flow transducer 35 is electrically connected to ECU10.

Wherein, described first flow deflector 32 is provided with 3, and these 3 first flow deflectors 32 are along tube wall 31 Inner periphery is uniformly distributed every 120 °, and its laying angle is (between the first flow deflector 32 and eddy flow tube wall 31 Angle) be set to 18 °, to ensure optimal tangential flowing.Described second flow deflector 33 and first is led Flow 32 structure is identical, after it is arranged on the first flow deflector 32, and staggers with the first flow deflector 32 60 ° are connected in tube wall 31, and its laying angle is set to 36 DEG C, are used for reducing resistance and strengthening peripheral flow Dynamic intensity.It addition, the 3rd or more flow deflector can be arranged the most again according to actual separation effect, Laying angle gradually increases.Described motor 34 connects and drives the first flow deflector 32 and the second water conservancy diversion Sheet 33, to regulate laying angle, thus can obtain more preferable centrifugal effect, know make flow deflector 32, 33 adapt to different operating modes.Described flow transducer 35 is arranged on the central authorities in tube wall 31, ECU10 By the numerical analysis cyclonic separation effect of reading flow quantity sensor 35, and control motor accordingly 34, motor 34 regulates the laying angle of each flow deflector 32,33, to obtain more separating effect.

Further, the long limit of described first flow deflector 32 is connected with tube wall 31, and minor face 33 is along pipe The axis of wall 31 extends；For reducing resistance, its leading edge frustrates into obtuse；For avoiding streaming, trailing edge adds Work becomes wing；Its height is 0.4 times of tube wall 31 diameter, makes the spiral flow of formation have bigger strong Degree；1.8 times of a length of tube wall 31 diameter, to ensure the bigger sphere of action to fluid.

Described rotating magnetic field device 4 by aluminum matter pipeline 41, iron shell 42, three-phase symmetric winding 43, Flange 44 and three-phase symmetrical current module 45 form.Described three-phase symmetric winding 43 is wound on aluminum matter Outside pipeline 41.Described iron shell 42 is coated on aluminum matter pipeline 41.Described flange 44 is welded on The two ends of aluminum matter pipeline 41.Described three-phase symmetrical current module 45 connects described three-phase symmetric winding 43, And by ECU10 control.

The operation principle of described rotating magnetic field device 4 is as follows: due to polymeric macroparticle absolute mass relatively Little, after eddy flow is centrifuged module 3 initial centrifugation, though magnetization polymeric macroparticle has been thrown off conduit axis, But not yet close to tube wall, need to carry out secondary centrifuging.Magnetization polymeric macroparticle enters described rotation with fluid After turning magnetic field device 4, flowing through three-phase symmetrical electric current in three-phase symmetric winding 43, this electric current is in aluminum matter Rotating excitation field is produced in pipeline 41.Magnetized particles is acted on by magnetic field force under rotating excitation field effect, And the most spirally advance, simultaneously to aluminum matter pipeline 41 vessel wall motion.Rationally adjust Joint magnetic field intensity can make the granule in fluid " separate " out from fluid, is gathered in aluminum matter pipeline 41 near-wall, it is simple to subsequent adsorbtion.

Described adsorption module 5 is gathered in near-wall for adsorbing after rotated magnetic field device 4 is centrifuged Magnetization is polymerized big microgranule.When described adsorption module 5 uses homopolarity adjacent type absorbing ring, this homopolarity is adjacent Type absorbing ring is led by aluminium ring shape pipeline 51, forward solenoid 52, reverse solenoid 53 and irony Magnetic cap 54 parts such as grade form.Wherein, described forward solenoid 52 and reverse solenoid 53 cloth respectively In being placed in aluminium ring shape pipeline 51 and by ECU10 control, both are connected with electric current in opposite direction, make Obtain forward solenoid 52 and reverse solenoid 53 adjacent produces like pole.Described irony magnetic conduction cap On 54 inwalls being arranged in aluminium ring shape pipeline 51, it is positioned at forward solenoid 52 and reverse solenoid 53 adjacents and forward solenoid 52 and the intermediate point of reverse solenoid 53 axis.

The design principle of described homopolarity adjacent type absorbing ring is as follows: have multiple ribbon core inside absorbing ring Energization solenoid, adjacent solenoid coil is connected with electric current in opposite direction so that forward solenoid and Reverse solenoid adjacent produces like pole.Meanwhile, forward solenoid and reverse solenoid adjacent, And it is provided with irony magnetic conduction at the absorbing ring inwall of forward solenoid and reverse solenoid axis intermediate point Cap, parallel with absorbing ring axis in strip, the shell of absorbing ring is paramagnetism aluminum matter outer tube wall, this It is provided with and beneficially improves magnetic circuit, strengthen the magnetic field intensity at absorbing ring inwall, strengthen the capture to granule Absorbability.Each solenoid current is directly controlled by ECU, can be according to the size of granule and concentration Different and change, to obtain optimal adsorption performance.After having adsorbed, ECU controls electric magnet power-off, Paramagnetism aluminum matter pipeline loses magnetism, and is attached to magnetic polymeric bulky grain on inner-walls of duct and manages with fluid edge Wall enters adjacent capacitor particulate matter monitoring module.

Further, during the homopolarity adjacent type absorbing ring that described adsorbent equipment 5 may be used without charged hammer, The homopolarity adjacent type absorbing ring of this charged hammer is by aluminium ring shape pipeline 51, forward solenoid 52, anti- To parts such as solenoid 53, irony magnetic conduction cap 54, dividing plate 55, electric shock hammer 56 and electric magnet 57 Composition.Wherein, described forward solenoid 52 and reverse solenoid 53 are respectively arranged in aluminium ring shape pipe In road 51 and by ECU10 control, both are connected with electric current in opposite direction so that forward solenoid 52 Like pole is produced with reverse solenoid 53 adjacent.Described irony magnetic conduction cap 54 is arranged in aluminium ring On the inwall of shape pipeline 51, its be positioned at forward solenoid 52 and reverse solenoid 53 adjacent, with And forward solenoid 52 and the intermediate point of reverse solenoid 53 axis.Described electric shock hammer 56 and electromagnetism Ferrum 57 is between dividing plate 55.Described electric magnet 57 connects and can promote electric shock hammer 56, makes electric shock Hammer 56 percussion aluminium ring shape pipeline 52 inwall.Described ECU10 is electrically connected with and controls forward solenoid 52, reverse solenoid 53 and electric magnet 57.

The design principle of the homopolarity adjacent type absorbing ring of described charged hammer is as follows: have many inside absorbing ring The energization solenoid of individual ribbon core, adjacent solenoid coil is connected with electric current in opposite direction so that just Like pole is produced to solenoid and reverse solenoid adjacent.Meanwhile, forward solenoid and reverse spiral shell Set at the absorbing ring inwall of spool adjacent and forward solenoid and reverse solenoid axis intermediate point Having irony magnetic conduction cap, parallel with absorbing ring axis in strip, the shell of absorbing ring is outside paramagnetism aluminum matter Tube wall, this set is conducive to improving magnetic circuit, strengthens the magnetic field intensity at absorbing ring inwall, and it is right to strengthen The capture absorbability of granule.Each solenoid current is directly controlled by ECU, can be according to the particle diameter of granule Size is different with concentration and changes, to obtain optimal adsorption performance.Be additionally provided with between adjoining solenoids by The electric hammer of magnet control, two ends are isolated by dividing plate and solenoid magnet.What this electric shock was hammered into shape arranges use In preventing granule bulk deposition at irony magnetic conduction cap, affect adsorption effect.Now, electric magnet is passed through Control electric hammer and tap the inwall of absorbing ring so that adsorbed granule scatter to both sides.Meanwhile, exist When cleaning absorbing ring, the percussion of electric shock hammer can also improve cleaning performance.After having adsorbed, by electricity Magnet controls electric hammer and taps the inwall of absorbing ring so that adsorbed granule scatter to both sides, subsequently ECU controls electric magnet power-off, and paramagnetism aluminum matter pipeline loses magnetism, and is attached to magnetic on inner-walls of duct Polymeric macroparticle enters adjacent capacitor particulate matter monitoring module with fluid along tube wall.

Refer to Figure of description 15-1 to shown in accompanying drawing 15-4, described adjacent capacitor particulate matter monitoring mould Wear particle situation in block 6 on-line monitoring fluid pressure line.Described adjacent capacitor particulate matter monitoring module 6 by Lucite inwall 61, ground shield 62, reception pole plate 63, excitation pole plate 64 and outer wall Several parts compositions such as 65.Wherein, described machine glass inner wall 61, ground shield 62 and outer wall 65 In tubular construction, and successively from-inner-to-outer is arranged.

The thickness of described machine glass inner wall 61 is 0.5mm, and dielectric constant is the 2.5 (dielectrics of hydraulic oil Constant about about 2.1), and the dielectric constant of hydraulic oil is close, therefore edge capacitance is fixed value；When When lucite inner wall surface piles with magnetization polymeric macroparticle, magnetize polymeric macroparticle, hydraulic oil and have Machine glass inner wall forms mixed dielectric, jointly acts on sensors edges electric capacity, big of magnetization polymerization The dielectric constant of grain is typically larger than 10, is the several times of the dielectric constant of hydraulic oil and lucite inwall, Enough cause the significant change of capacitance sensor edge capacitance, therefore may utilize adjacent capacitive sensors electricity The change of capacitance, thus the anti-minor variations pushing away fluid dielectric constant, and then realize wear particle Implement monitoring.

Adjacent capacitive sensors performance based on electric capacity edge effect depends primarily on penetration depth (electric field The penetration depth of line), signal intensity (size of capacitance) and noise suppressed, measurement sensitivity is (to electricity Buckling or the sensitivity of electric field change) and the measurement dynamic range of sensor.Existing adjacent capacitor passes The capacitance that sensor measurement obtains is the faintest, and usually pF level is the least, low to metal particle etc. The measurement effect of the medium of dielectric constant is the most worse, therefore promotes sensor output signal strength and particularly closes Key.Meanwhile, signal intensity and penetration depth two indices are conflicting, and this is also this sensor Performance boost difficult point.

Adjacent capacitive sensors signal intensity and sensor plate area, polar plate spacing, and sensor And the distance between object under test, the dielectric constant of determinand suffers from the biggest relation.Be polymerized through magnetization, Centrifugal and adsorption treatment wear particle is assembled in lucite inner wall surface, and the increase of amounts of particles is led Causing the increase of fluid dielectric constant, the particle diameter increase that aggregation of particles brings also makes fluid dielectric constant Increasing, magnetize simultaneously and also have the function increasing dielectric constant, three acts on simultaneously, has been greatly reinforced letter Number intensity；And owing to granule is close to organic glass inner wall surface, penetration depth is required almost nil, Also index collision problem is solved.

Owing to adjacent capacitive sensors output signal strength is the faintest, the noise impact on measurement result Significantly.Generally noise is mainly derived from two aspects, the noise of sensor self and environment noise.For this Devising ground shield to reduce sensor self-noise, the dielectric constant of ground shield 62 is 1.5-2.5, shielding thickness is preferred between being 1 to 2 times of adjacent capacitive sensors outer wall 65 thickness, To ensure to measure sensitivity.

Described reception pole plate 63, excitation pole plate 64 are embedded in ground shield 62, and are positioned at machine glass Outside glass inwall 61, form gap magnetic field 66 between the two, be used for detecting aggregated particles 67.Described Receive pole plate 63, excitation pole plate 64 all uses efficient frontier length and baroque Peano curve knot Structure pole plate layer.In this Peano curve structure pole plate layer, excitation pole plate 63, reception pole plate 64 form Curve can travel through square pole plate layer in all of point, obtain one be full of whole square pole plate layer The curve in space.In the case of pole plate aspect is long-pending fixing, this structure has the longest efficient frontier, Big polar plate area and labyrinth, add effective polar plate area and pole plate edge, add sensing Device edge capacitance value, reduces the requirement to external interface circuit sensitivity.Thus can obtain optimal letter Number intensity, sensor excitation pole plate uses curved edge to it also avoid pole plate corner with receiving pole plate High sensitivity and unstability.Further, described reception pole plate 63, excitation both pole plates 64 it Between be provided with sealing coat 69；0.8-1 times that width is lucite inner wall thickness of described sealing coat 69, It effectively can will receive pole plate 63, encourage pole plate 64 to isolate.

One end of described demagnetization module 7 is provided with fluid outlet 92, and it is by remanent magnetism sensor and demagnetizer group Become.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, described demagnetization module 7 Detected value according to demagnetizer exit remanent magnetism sensor controls the demagnetization intensity of demagnetizer.Use herein Demagnetization method be electromagnetism demagnetization, method is the opposing magnetic field by add suitable so that in material Magnetic induction comes back to zero point, and magnetic field intensity or electric current must invert in order and progressively drop Low.

Referring to shown in Figure of description 16, described wear particle on-Line Monitor Device farther includes Described ECU10, the PIC16F877 of its optional Microchip company.Described wave filter 8, surplus Magnetic Sensor, demagnetizer, heater, cooler, temperature sensor, magnetizing current output module 25, Mechanical centrifugal module 3, rotating excitation field are centrifuged module 4, adsorption module 5, adjacent capacitor particulate matter monitoring mould Block 6 is all electrically connected on ECU, and by ECU control.

In using above-mentioned wear particle on-Line Monitor Device that hydraulic pressure is had wear particle monitoring include as Lower method:

1), the fluid in fluid pressure line carries wear particle and passes through wave filter 8, is declined by wave filter 8 Subtract the fluctuation pressure of high, medium and low frequency range in hydraulic system, and suppression flowed fluctuation；

2), oil liquid temperature is controlled by temperature control module constant at 42 DEG C；

3), magnetized module 2 is force-magnetized by the wear particle that carries in fluid, makes micron-sized mill Damage particle aggregation and become bulky grain

4), magnetization aggregated particles initial centrifugation in mechanical centrifugal module 3；

5), rotating excitation field module 4 carries out secondary centrifuging to magnetization aggregated particles；

6), adsorption module 5 adsorbs the magnetization being gathered in near-wall after rotated magnetic field module 4 is centrifuged It is polymerized big microgranule；

7), by wear particle situation in adjacent capacitor particulate matter monitoring module 6 on-line monitoring fluid pressure line

8), demagnetization module 7 gives magnetized particles demagnetization, prevents magnetic microparticles from entering hydraulic circuit, to dirt The sensitive Hydraulic Elements of dye 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. by Hydraulic filtration, centrifugation and the wear particle monitoring method of adjacent capacitor, it is characterized in that: it uses a kind of monitoring device, and this equipment includes that wave filter, temperature control module, magnetized module, mechanical centrifugal module, rotating excitation field are centrifuged module, adsorption module, adjacent capacitor particulate matter monitoring module and demagnetization module；Wherein, described wave filter, temperature control module, magnetized module, mechanical centrifugal module, rotating excitation field are centrifuged module, adsorption module, adjacent capacitor particulate matter monitoring module and demagnetization module and are sequentially connected with；One end of described wave filter is provided with fluid entrance, and it includes input pipe, shell, outlet tube, corrugated tube and S type elastic thin-wall；Wherein, described input pipe is connected to one end of shell；Described outlet tube is connected to the other end of shell；Described S type elastic thin-wall is installed in shell along the radial direction of shell, forms expansion chamber and contraction chamber in it；Described input pipe, outlet tube and S type elastic thin-wall are collectively forming a S type cavity volume wave filter；The resonance cavity volume of cylinder is formed between described S type elastic thin-wall and shell；Some taper structure changes damping holes, taper structure changes damping hole connection resonance cavity volume is uniformly had in the axial direction of described S type elastic thin-wall；Described taper structure changes damping hole is made up of cone shaped elastic damping hole pipe and slot apertures；Described corrugated tube is wound on outside resonance cavity volume in the shape of a spiral, inserts pipe with resonance cavity volume by multiple tapers and connects；Described corrugated tube is connected by some arms between respectively enclosing, and arm is provided with switch；Described corrugated tube and resonance cavity volume composition plug-in type spiral isomery cascaded H mode filter；One end of described demagnetization module is provided with fluid outlet, and it is made up of remanent magnetism sensor and demagnetizer；

It comprises the steps:

1), the fluid in fluid pressure line carries wear particle and passes through wave filter, by the fluctuation pressure of the high, medium and low frequency range in filter attenuation hydraulic system, and suppression flowed fluctuation；

2), oil liquid temperature is controlled by temperature control module constant at 42 DEG C；

3), magnetized module is force-magnetized by the wear particle that carries in fluid, makes micron-sized wear particle aggregate into bulky grain

4), magnetization aggregated particles initial centrifugation in eddy flow is centrifuged module；

5), rotating excitation field module carries out secondary centrifuging to magnetization aggregated particles；

6), adsorption module adsorbs the magnetization big microgranule of polymerization being gathered in near-wall after rotated magnetic field module is centrifuged；

7), by wear particle situation in adjacent capacitor particulate matter monitoring module online monitoring fluid pressure line；

8), demagnetization module is to magnetized particles demagnetization.

The wear particle monitoring method of Hydraulic filtration the most as claimed in claim 1, centrifugation and adjacent capacitor, 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 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 corrugated tube, and its taper angle is 10 °.

The wear particle monitoring method of Hydraulic filtration the most as claimed in claim 1, centrifugation and adjacent capacitor, it is characterised in that: described temperature control module includes heater, cooler and temperature sensor；Described heater uses the lubricating oil heater of the Chongqing gold letter of band temperature detection；Remover for surface evaporation type air cooling selected by described cooler, and the finned tube of cooler selects KLM type finned tube；Temperature sensor uses platinum resistance temperature sensor.

The wear particle monitoring method of Hydraulic filtration the most as claimed in claim 1, centrifugation and adjacent capacitor, it is characterised in that: described magnetized module includes aluminum matter pipeline, some windings, iron shell, flange and some magnetizing current output modules；Wherein, described some windings are rotating around outside aluminum matter pipeline, and each winding is made up of positive winding and inverse winding, and the size of current in positive winding and inverse winding is equal；Described iron shell is coated on aluminum matter pipeline；Described flange welding is at the two ends of aluminum matter pipeline；Each magnetizing current output module is connected to a winding.

The wear particle monitoring method of Hydraulic filtration the most as claimed in claim 1, centrifugation and adjacent capacitor, 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.

The wear particle monitoring method of Hydraulic filtration the most as claimed in claim 1, centrifugation and adjacent capacitor, 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.

The wear particle monitoring method of Hydraulic filtration the most as claimed in claim 6, centrifugation and adjacent capacitor, it is characterised in that: described adsorption module uses homopolarity adjacent type absorbing ring；Described 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.

The wear particle monitoring method of Hydraulic filtration the most as claimed in claim 6, centrifugation and adjacent capacitor, it is characterised in that: described adsorption module uses the homopolarity adjacent type absorbing ring of charged hammer；The homopolarity adjacent type absorbing ring of described 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.

The wear particle monitoring method of Hydraulic filtration the most as claimed in claim 1, centrifugation and adjacent capacitor, it is characterised in that: described adjacent capacitor particulate matter monitoring module includes organic glass inner wall, ground shield, reception pole plate, excitation pole plate and outer wall；Wherein, described machine glass inner wall, ground shield and outer wall in tubular construction, and successively from-inner-to-outer arrange；The thickness of described machine glass inner wall is 0.5mm, and dielectric constant is 2.5；The dielectric constant of described ground shield is 1.5-2.5, and thickness is 1 to 2 times of outer wall thickness；Described reception pole plate, excitation pole plate are embedded in ground shield, and are positioned at outside machine glass inner wall；Described reception pole plate, excitation pole plate all use Peano curve structure pole plate layer, are provided with sealing coat between the two；The width of described sealing coat is 0.8-1 times of lucite inner wall thickness.

The wear particle monitoring method of Hydraulic filtration the most as claimed in claim 1, centrifugation and adjacent capacitor, it is characterized in that: it farther includes an ECU, described wave filter, remanent magnetism sensor, demagnetizer, heater, cooler, temperature sensor, magnetizing current output module, mechanical centrifugal module, rotating excitation field are centrifuged module, adsorption module and adjacent capacitor particulate matter monitoring module and are all electrically connected on ECU.