CN105954167A - Dual exciting solenoid type particle sensitive device adopting working condition adaptive filtering - Google Patents
Dual exciting solenoid type particle sensitive device adopting working condition adaptive filtering Download PDFInfo
- Publication number
- CN105954167A CN105954167A CN201610311882.2A CN201610311882A CN105954167A CN 105954167 A CN105954167 A CN 105954167A CN 201610311882 A CN201610311882 A CN 201610311882A CN 105954167 A CN105954167 A CN 105954167A
- Authority
- CN
- China
- Prior art keywords
- module
- solenoid
- wall
- type
- cavity volume
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 40
- 239000002245 particle Substances 0.000 title abstract description 53
- 230000003044 adaptive effect Effects 0.000 title abstract 3
- 230000009977 dual effect Effects 0.000 title abstract 3
- 230000005291 magnetic effect Effects 0.000 claims abstract description 92
- 238000001179 sorption measurement Methods 0.000 claims abstract description 42
- 230000006698 induction Effects 0.000 claims abstract description 31
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims description 77
- 239000012530 fluid Substances 0.000 claims description 55
- 239000010410 layer Substances 0.000 claims description 45
- 238000013016 damping Methods 0.000 claims description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 41
- 229910052782 aluminium Inorganic materials 0.000 claims description 41
- 230000002441 reversible effect Effects 0.000 claims description 41
- 239000004531 microgranule Substances 0.000 claims description 40
- 238000004804 winding Methods 0.000 claims description 40
- 238000000465 moulding Methods 0.000 claims description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 21
- 239000000084 colloidal system Substances 0.000 claims description 20
- 229910052742 iron Inorganic materials 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 23
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 23
- 230000008859 change Effects 0.000 description 20
- 229910052751 metal Inorganic materials 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- 230000005294 ferromagnetic effect Effects 0.000 description 16
- 230000033001 locomotion Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 230000010349 pulsation Effects 0.000 description 13
- 239000007788 liquid Substances 0.000 description 9
- 239000002923 metal particle Substances 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 9
- 230000035945 sensitivity Effects 0.000 description 9
- 238000013461 design Methods 0.000 description 8
- 230000005684 electric field Effects 0.000 description 8
- 239000008187 granular material Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 239000003302 ferromagnetic material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 230000005415 magnetization Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009527 percussion Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000009828 non-uniform distribution Methods 0.000 description 2
- 230000005408 paramagnetism Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to a dual exciting solenoid type particle sensitive device adopting working condition adaptive filtering. The dual exciting solenoid type particle sensitive device is arranged on a hydraulic pipe; filters, a separation and adsorption module, a rotary shaping module, an exciting coil I, an induction coil and an exciting coil II are arranged on the hydraulic pipe sequentially; the exciting coil I and the exciting coil II are oppositely connected in series; the induction coil is located between the exciting coil I and the exciting coil II; an ECU (electronic control unit) is electrically connected with and controls the filters, the separation and adsorption module, the rotary shaping module, the exciting coil I, the exciting coil II and the induction coil; the filters adopt working condition adaptive filters; the separation and adsorption module comprises a mechanical centrifugal module, a magnetizing module, a magnetic adsorption module, an electrification module and an electric absorption module which are connected sequentially. The particle sensitive device adopts a non-contact measurement mode and has multiple advantages of good signal consistency, high reliability, high detection signal, small error and the like.
Description
[technical field]
The present invention relates to a kind of hydraulic oil wear particle sensor, be specifically related to the double of a kind of operating mode adaptive-filtering
Excitation solenoid type microgranule sensor, belongs to technical field of hydraulic equipment.
[background technology]
Abrasion is one of principal element of component of machine inefficacy, and wear particle is monitoring wear process and diagnosis abrasion
The most directly information word of failure type.Statistics both domestic and external show, hydraulic machinery 70% fault be derived from fluid
Grain pollutes.Therefore, the metallic wear particles in fluid is carried out on-line monitoring and has become minimizing abrasion and hydraulic system clamping card
One of important channel of puckery fault.
Inductance type transducer belongs to non-contact measurement, and in fluid, material and the quantity of contained metallic wear particles make biography
Sensor equivalent inductance changes, thus realizes the on-line monitoring of wear particle.Chinese invention patent the 201310228772.6th
Number disclosing a kind of fluid metal worn particle on-line monitoring system, this fluid metal worn particle on-line monitoring system includes sensor, micro-
Processor and circuit, its sensor is solenoid type inductance sensor.When using this system to carry out on-line monitoring, first by two
The excitation coil parallel connection of identical sensor accesses excitation AC signal generator, by two induction coil differential concatenations and with two
The big resistance of the resistance such as individual is connected into AC bridge;Then make the oil circuit of a fluid sensor from which passes through.Work as sensor
In an oil circuit containing excitation coil and induction coil by the fluid containing metal worn particle, another is obstructed out-of-date, metal
Abrasive particle affects the magnetic field intensity of sensor, destroys the balance of electric bridge, the alternating voltage of induction coil output respective magnitudes.Output electricity
Pressure size and metal worn particle concentration are directly proportional, and the metal worn particle concentration contained in fluid is the biggest, and output voltage values is the biggest.Logical
Cross system processing module to output signal collection and process, reach the purpose to fluid metal worn particle concentration on-line monitoring.
But, there is the deficiency of following several respects in above-mentioned monitoring method:
1. the magnetic fluctuation that metallic wear particles causes when flowing through test coil is the faintest, the output result of detection coil
Affected relatively big by microgranule Negotiation speed, in pipeline, pressure and the flowed fluctuation of fluid will have a strong impact on having of inductance method detection of particulates
Effect property and concordance.
2. the galling abrasive particle in machine oil can be divided into ferromagnetics microgranule (such as ferrum) and non-according to its electromagnetic property
Ferromagnetics microgranule (such as copper, aluminum).Ferromagnetics microgranule strengthens the equivalent inductance of cell winding, and non-ferromagnetic material microgranule then weakens biography
The equivalent inductance of sensor coil.When two kinds of microgranules are simultaneously by 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 milling grain, its fiber number is little
In other abrasive particles, cell winding is relatively weak to its power of test.Such as patent documentation 1, can only to process the metal of about 10um micro-
Grain, 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 by mistake
Difference;The inductance of the most same model is greater than the power of test to copper granule to the power of test of Ferrous particles, and this equally can
Bring measurement error.
Therefore, for solving above-mentioned technical problem, the bidifly of the use operating mode adaptive-filtering of a kind of innovation of necessary offer
Encourage solenoid type microgranule sensor, to overcome described defect of the prior art.
[summary of the invention]
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of employing non-contacting metering system, signal
Concordance is good, reliability is high, the double excitation solenoid type microgranule of the detection use operating mode adaptive-filtering that signal is strong and error is little is quick
Induction device.
For achieving the above object, the technical scheme that the present invention takes is: the double excitation spiral shell of a kind of operating mode adaptive-filtering
Spool declines a sensor, and it is arranged on fluid pressure line, it include wave filter, separate adsorption module, rotate moulding module,
Excitation coil I, excitation coil II, induction coil and ECU;Wherein, described wave filter, separate adsorption module, rotate moulding mould
Block, excitation coil I, induction coil, excitation coil II are successively set on fluid pressure line;Described excitation coil I and excitation coil
II differential concatenation;Described induction coil central authorities between excitation coil I and excitation coil II;Described ECU the most electrically connects
Connect and control wave filter, separate adsorption module, rotate moulding module, excitation coil I, excitation coil II and induction coil;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;
Described input pipe is connected to one end of shell;Described outlet tube is connected to the other end of shell, itself and separation adsorption module docking;
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 is formed between described elastic thin-wall and shell
Cavity volume;Separated by an elastic baffle between described resonance series cavity volume I and resonance series cavity volume II;The axle of described elastic thin-wall
The most uniformly have some conical damping holes;Uniformly have some tapers in the axial direction of described elastic baffle and insert 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 is positioned at parallel resonance cavity volume
In, it is connected with conical damping hole;Described plug-in type cascaded H mode filter is positioned at resonance series cavity volume I and resonance series is held
In the II of chamber, it is also connected with conical damping hole;Described plug-in type H mode filter and plug-in type cascaded H mode filter axially in
It is symmetrical arranged, and forms plug-in type connection in series-parallel H mode filter;Described separation adsorption module is by the mechanical centrifugal mould being sequentially connected with
Block, magnetized module, magnetic suck module, electrification module and electric adsorption module composition.
The present invention is further arranged to the double excitation solenoid type microgranule sensor of operating mode adaptive-filtering: described
The axis of input pipe and outlet tube is the most on the same axis;The described wider place of conical damping hole opening is positioned at resonance series cavity volume I
With in parallel resonance cavity volume, its taper angle is 10 °;Described taper is inserted the wider place of tube opening and is positioned at resonance series cavity volume II,
Its taper angle is 10 °;Described taper is inserted the position of pipe and conical 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, outer layer
Connected by some pillars are fixing between elastic thin-wall and internal layer 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 colloid damping layer is near defeated
The one end going out pipe is connected with shell;Described colloid damping layer is provided with a piston near one end of outlet tube.
The present invention is further arranged to the double excitation solenoid type microgranule sensor of operating mode adaptive-filtering: 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 water conservancy diversion
Sheet, motor and flow transducer;Wherein, described first flow deflector is provided with 3, and these 3 first flow deflectors are along tube wall
Circumference is uniformly distributed every 120 °, and its laying angle is set to 18 °;Described second flow deflector and the first flow deflector structure are identical, and it is arranged
After 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;Described first leads
The long limit of flow 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 it is high
Degree is 0.4 times of tube wall diameter, 1.8 times of a length of tube wall diameter;Described motor connect and drive the first flow deflector and
Second flow deflector, to regulate laying angle;Described flow transducer is arranged on the central authorities in tube wall.
The present invention is further arranged to the double excitation solenoid type microgranule sensor of operating mode adaptive-filtering: described
Magnetized module includes aluminum matter pipeline, some windings, iron shell and flange;Wherein, described some windings are rotating around in aluminum matter
Outside pipeline;Described iron shell is coated on aluminum matter pipeline;Described flange welding is at the two ends of aluminum matter pipeline.
The present invention is further arranged to the double excitation solenoid type microgranule sensor of operating mode adaptive-filtering: described
Magnetic suck module use homopolarity adjacent type absorbing ring, this homopolarity adjacent type absorbing ring include 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,
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 present invention is further arranged to the double excitation solenoid type microgranule sensor of operating mode adaptive-filtering: described
Magnetic suck module uses the homopolarity adjacent type absorbing ring of charged hammer, and the homopolarity adjacent type absorbing ring of this charged hammer includes aluminum matter
Circulating line, forward solenoid, reverse solenoid, irony magnetic conduction cap, dividing plate, electric shock hammer and electric magnet;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 so that forward solenoid
Like pole is produced with reverse solenoid adjacent;Described irony magnetic conduction cap is arranged on the inwall of aluminium ring shape pipeline, its position
In forward solenoid and reverse solenoid adjacent and forward solenoid and the intermediate point of reverse solenoid axis;Described every
Plate is between forward solenoid and reverse solenoid;Described electric shock hammer and electric magnet are between dividing plate;Described electric magnet is even
Connect and electric shock hammer can be promoted, making electric shock hammer tap aluminium ring shape inner-walls of duct.
The present invention is further arranged to the double excitation solenoid type microgranule sensor of operating mode adaptive-filtering: described
Electrification module includes some electrodes and an electrode controller;Described some electrodes are installed on fluid pressure line, and it connects respectively
To electrode controller.
The present invention is further arranged to the double excitation solenoid type microgranule sensor of operating mode adaptive-filtering: described
Electric adsorption module includes aluminum matter pipeline, positive plate, minus plate and pole plate controller;Wherein, described positive plate, minus plate are respectively
It is arranged on aluminum matter pipeline, and in being oppositely arranged;Described positive plate, minus plate are respectively and electrically connected on pole plate controller;Institute
State pole plate controller and be electrically connected to ECU, and by ECU control.
The present invention is further arranged to the double excitation solenoid type microgranule sensor of operating mode adaptive-filtering: described
Rotate moulding module and include 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
Two ends at aluminum matter pipeline;The moulding current output module of each rotation is connected to a winding.
The present invention is also configured to the double excitation solenoid type microgranule sensor of operating mode adaptive-filtering: described excitation
Coil I and excitation coil II all comprises some windings, and each winding is made up of positive winding and inverse winding, and each winding is respectively connecting to one
Exciting current output module, this exciting current output module is controlled by ECU module.
Compared with prior art, there is advantages that present invention introduces oil liquid pressure flowed fluctuation suppresses
Technology and microgranule timesharing release measure, to ensure effectiveness and the concordance of detection;By mechanical centrifugal, magnetization absorption, electrification
The technology such as absorption by ferromagnetics microgranule and non-ferromagnetic material separation of particles, affect testing result preventing two kinds of microgranules from interfering with each other;
By aggregation of particles and rotating excitation field moulding increase grain diameter and change its form, to improve the sensitivity of detection;By changing
Enter the uniformity along its axis direction of the magnetic induction in solenoid coil structural adjustment solenoid, to reduce detection error;
Construct zero magnetic field, the outside field coil differential concatenation (double excitation solenoid) that two are driven by high-frequency ac power, the magnetic of generation
Field direction is contrary, can make to be placed exactly in magnetic field at central sensory coil at tube interior and cancel out each other, be zero magnetic field, it is ensured that magnetic
The biggest variation rate of magnetic flux can be obtained when variations of flux is less, to improve detection sensitivity, reduce follow-up signal and process electricity
Road requirement.
[accompanying drawing explanation]
Fig. 1 is that the overall structure with the double excitation solenoid type microgranule sensor of operating mode adaptive-filtering of the present invention is shown
It is intended to.
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 is plug-in type H mode filter schematic diagram in Fig. 3.
Fig. 5 is plug-in type cascaded H mode filter schematic diagram in Fig. 3.
Fig. 6 is plug-in type H mode filter and plug-in type cascaded H mode filter frequency characteristic constitutional diagram.Wherein, solid line is slotting
Enter formula cascaded H mode filter frequency characteristic.
Fig. 7 is plug-in type connection in series-parallel H mode filter frequency characteristic figure.
Fig. 8 is the structural representation of c-type cavity volume wave filter.
Fig. 9 is the cross sectional representation of elastic thin-wall.
Figure 10 is the Longitudinal cross section schematic of colloid damping layer.
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 structural representation of the adjacent type absorbing ring of the homopolarity that magnetic suck module is charged hammer in Figure 11.
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, the present invention is the double excitation spiral shell of a kind of operating mode adaptive-filtering
Spool declines a sensor, and it is arranged on fluid pressure line 7, its by wave filter 8, separate adsorption module 2, rotate moulding module
3, several parts such as excitation coil I4, induction coil 5, excitation coil II6 and ECU1 composition.
Wherein, described wave filter 8, separate adsorption module 2, rotate moulding module 3, excitation coil I4, induction coil 5, swash
Encourage coil II6 to be successively set on fluid pressure line 7.Described ECU1 is electrically connected with and controls wave filter 8, separates adsorption module
2, moulding module 3, excitation coil I4, excitation coil II5 and induction coil 5 are rotated.
Owing to the flow velocity of fluid is very big on detection characteristic impact, along with the increase of oil flow, the sensitivity of detection and
Output voltage all will occur significant change;Meanwhile, the flow of fluid also has large effect to detection output, when flow increases
Time, output voltage is as well as change, and this is very big, to this end, the present invention is in inspection to concordance and the availability influence of testing result
Wave filter 8 stable hydraulic system pressure and flow is added before survey.
Described wave filter 8 is by input pipe 81, shell 89, outlet tube 811, elastic thin-wall 87, plug-in type H mode filter 812
And several parts such as plug-in type cascaded H mode filter 813 composition.
Wherein, described input pipe 81 is connected to one end of shell 89, and it is for input hydraulic pressure oil;Described outlet tube 811 is even
Being connected to the other end of shell 89, itself and separation adsorption module 2 dock.Described elastic thin-wall 87 is installed on shell along the radial direction of shell
In 89.The axis of described input pipe 81 and outlet tube 811 the most on the same axis, so can improve the filtering effect of more than 10%
Really.
Described input pipe 81, outlet tube 811 and elastic thin-wall 87 are collectively forming a c-type cavity volume wave filter, thus liquid of decaying
Pressure system high-frequency pressure fluctuation.The filter transmission coefficient obtained after processing by lumped-parameter method is:
Velocity of sound L in a mediumVC-type cavity volume length SVC-type cavity volume volume Z characteristic impedance
γ transmission coefficient f pressure oscillation frequency SIInput pipe cross-sectional area.
From above formula, when the pressure pulse wave of different frequency is by this wave filter, transmission coefficient is different with frequency.Frequently
Rate 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 rises
Arrive 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
Act on convection cell on fluid and produce pinch effect.When the flow of change enters c-type cavity volume by input pipe 81, liquid stream exceedes
Average discharge, the cavity volume of expansion can absorb unnecessary liquid stream, and releases liquid stream when less than average discharge, thus absorption pressure arteries and veins
Energy.
Described elastic thin-wall 87 weakens hydraulic system medium-high frequency pressure fluctuation by being forced to mechanical vibration.By lumped parameter
The elastic thin-wall natural frequency that method obtains after processing is:
K elastic thin-walled structures coefficient h elastic thin-wall thickness R elastic thin-wall radius
The mass density of the Young's modulus ρ elastic thin-wall of E elastic thin-wall
The Poisson's ratio of the current-carrying factor mu elastic thin-wall of η elastic thin-wall.
Substitute into actual parameter, above formula is carried out simulation analysis it is found that the natural frequency generally ratio H type of elastic thin-wall 87
The natural frequency of wave filter is high, and its attenuation band is also wide than H mode filter.In relatively wide frequency band range, elastic
Thin-walled has good attenuating to pressure fluctuation.Meanwhile, the 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 the effective attenuation to the medium-high frequency pressure fluctuation in hydraulic system.
The design principle of described elastic thin-wall 87 is as follows: when producing intermediate frequency pressure fluctuation in pipeline, c-type cavity volume is to pressure wave
Dynamic damping capacity is more weak, flows into the periodically pulsing pressure continuous action of wave filter c-type cavity volume inside and outside elastic thin-wall 87
On wall, elastic thin-wall 87 does periodic vibration by the frequency of fluctuation pressure, and this forced vibration consumes the pressure fluctuation energy of fluid
Amount, thus realize the filtering of Mid Frequency pressure.From the principle of virtual work, elastic thin-wall consume fluid pulsation pressure energy ability and
Potential energy and kinetic energy sum during its forced vibration are directly related, and in order to improve Mid Frequency filtering performance, the radius of elastic thin-wall sets
Being calculated as much larger than pipe radius, and the thickness of thin-walled is less, representative value is less than 0.1mm.
Further, resonance series cavity volume I84, resonance series cavity volume are formed between described elastic thin-wall 87 and shell 89
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.By an elastic baffle between described resonance series cavity volume I84 and resonance series cavity volume II5
810 separate.Uniformly having some conical damping holes 86 in the axial direction of described elastic thin-wall 87, described conical damping hole 86 opening is relatively
Wide place is positioned at resonance series cavity volume I84 and parallel resonance cavity volume 85, and its taper angle is 10 °.Described elastic baffle 810 axial
On uniformly have some tapers insert pipe 82, described taper insert pipe 82 connect resonance series cavity volume I84 and resonance series cavity volume
II83.Described taper is inserted the wider place of pipe 82 opening and 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 conical damping hole 86.
Described plug-in type H mode filter 812 is positioned at parallel resonance cavity volume 85, and it is connected with conical damping hole 86.Press
The wave filter natural angular frequency that lumped-parameter method obtains after processing is:
Velocity of sound L damping hole long S damping hole cross-sectional area V parallel resonance cavity volume volume in a medium.
Described plug-in type cascaded H mode filter 813 is positioned at resonance series cavity volume I84 and resonance series cavity volume II83, its
Also it is connected with conical damping hole 86.After processing by lumped-parameter method, two natural angular frequencies of wave filter are:
Wherein:
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 axially symmetrical set, and form slotting
Enter formula connection in series-parallel H mode filter, for broadening frequency filtering scope and make overall structure more compact.The present invention divides at circumferentially interface
The multiple plug-in type connection in series-parallel H mode filters (only depicting 2 in figure) of cloth, separate with dividing plate 820 each other.
By Fig. 6 plug-in type H mode filter and plug-in type cascaded H mode filter frequency characteristic and formula (1) (2) (3)
Finding, plug-in type cascaded H mode filter has 2 natural angular frequencies, and at crest, filter effect is preferable, the most basic at trough
There is no filter effect;Plug-in type H mode filter has 1 natural angular frequency, and at crest, filter effect is preferable equally, and at trough
Place does not has filter effect the most substantially;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 it is shown in fig. 7, both define in certain frequency range
The natural reonant frequency peak value of 3 next-door neighbours, in this frequency range, no matter the fluctuating frequency of pressure is at crest or at trough
All can guarantee that preferable filter effect.Multiple plug-in type connection in series-parallel H mode filters constitute bank of filters both can cover whole in
Low-frequency range, it is achieved the entire spectrum filtering of medium and low frequency section.
Further, the inner side of described elastic thin-wall 87 is provided with colloid damping layer 88.Described colloid damping layer 88 interior
Layer and outer layer are respectively outer layer elastic thin-wall 871 and internal layer elastic thin-wall 872, outer layer elastic thin-wall 871 and internal layer elastic thin-wall
Connected by some pillars 814 are fixing between 872.Fill in interlayer between outer layer elastic thin-wall 871 and internal layer elastic thin-wall 872
There is the pure water 816 adding antifreezing agent, in pure water 816, be suspended with Bio-sil 815.Described colloid damping layer 88 is near outlet tube
One end of 811 is connected with shell 89;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 871 with internal layer elastic thin-wall 872 spacing is the least and is connected, in pressure by pillar 814 is fixing
When power pulsation acts perpendicularly to thin-walled, inside and outside wall produces and is close to consistent deformation, and colloid damping layer thickness is kept approximately constant, right
Pressure fluctuation does not has damping action;The flow pulsation in 817 sensation level directions of piston of colloid damping layer 88, flow pulsation increases
Qiang Shi, piston 817 pressurized makes colloid damping layer shrink, and squeezing action makes the water in colloid damping layer 88 logical by nanoscale conveying
Road enters micron order central void;When flow pulsation weakens, piston 817 is by back-pressure, and now colloid damping layer expands, and colloid damps
Water in Ceng is discharged through passage from central void.In the process, due to mechanics effect, the passage of silica gel 815 microchannel sorption
The roughness effect of surface molecular yardstick and chemistry heterogeneous body effect, piston is followed colloid damping layer and is shunk and do in expansion process
The interfactial work on " gas-liquid-solid " border, thus flow systolic implementation is decayed, its substantially parallel R mode filter.Should
Wave filter is relative to the advantage of general liquid condenser: it is decayed by the way of the interfactial work on " gas-liquid-solid " border
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, declines
Decreasing effect rate is obviously improved.
Described wave filter can also the pulsation decay of solid line operating mode self-adaptive pressure.When hydraulic system working conditions change, both performed
Element stops suddenly or runs, and when the opening of valve changes, the characteristic impedance of pipe-line system can be caused to undergo mutation, so that
Former pipeline pressure curve with change in location in time changes the most therewith, then the position of pressure peak also changes.Due to this
The axial length of the wave filter of invention is designed as more than system main pressure pulsation wavelength, and the plug-in type connection in series-parallel H of wave filter
The cavity volume length of mode filter group, the length of c-type cavity volume wave filter and the length of elastic thin-wall 87 and wave filter axial length phase
Deng, it is ensured that pressure peak position is constantly in the effective range of wave filter;And conical damping hole 86 is opened in Thin Elastic
On wall 87, being uniformly distributed in the axial direction, the taper uniformly having multiple identical parameters in the axial direction of elastic baffle 810 is inserted
Pipe 82, conical damping hole 86 and taper are inserted pipe 82 position and are mutually staggered so that the pressure peak change in location property to wave filter
Can have little to no effect, it is achieved thereby that operating mode adaptive-filtering function.In view of three kinds of filter structure axial dimensions and filtering
Device is suitable, and this bigger size also ensure that hydraulic filter possesses stronger pressure fluctuation damping capacity.
The method that above-mentioned wave filter carries out hydraulic pulsation filtering is as follows:
1), hydraulic fluid enters c-type cavity volume wave filter by input pipe, and the cavity volume of expansion absorbs unnecessary liquid stream, completes height
The filtering of pressure fluctuation frequently;
2), by elastic thin-wall 87 forced vibration, consume the pressure fluctuation energy of fluid, complete the filter of intermediate frequency pressure fluctuation
Ripple;
3), by plug-in type connection in series-parallel H mode filter group, insert pipe by conical damping hole, taper and fluid produces altogether
Shake, 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 string is also
Connection H mode filter length, c-type cavity volume filter length and elastic thin-wall 87 length are equal with filter length, make pressure peak
Position is constantly in the effective range of wave filter, it is achieved the filtering of pressure fluctuation when system condition changes.
Galling abrasive particle in machine oil can be divided into ferromagnetics microgranule (such as ferrum) and non-ferric according to its electromagnetic property
Magnetic substance microgranule (such as copper, aluminum).Ferromagnetics microgranule strengthens the equivalent inductance of cell winding, and non-ferromagnetic material microgranule then weakens sensing
The equivalent inductance of device coil.When two kinds of microgranules are simultaneously by detection coil, this monitoring device will lose efficacy.To this end, the present invention uses
Separate adsorption module 2 and 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, and the solid particle that quality is bigger is thrown toward chamber
Wall, it uses the mode of energy loss, and its design principle is as follows: arrange the water conservancy diversion of the distortion of certain altitude and length in the duct
Sheet, and make blade face tangent line angled with axis, fluid can be made to produce spiral flow in pipes, this spiral shell because pipe flow border changes
Eddy flow can be analyzed to the circumferential flow around pipe axle and axial straight flowing, and the particulate matter carried in fluid produces off-axis alignment heart spiral shell
Rotation motion.This eddy flow centrifugal device 21 is by eddy flow tube wall the 211, first flow deflector the 212, second flow deflector 213, motor 214
And several parts such as flow transducer 215 composition, described motor 214 and flow transducer 215 are electrically connected to ECU1.
Wherein, described first flow deflector 212 is provided with 3, these 3 first flow deflectors 212 along tube wall 211 inner periphery every 120 °
Being uniformly distributed, its laying angle (angle between the first flow deflector 212 and eddy flow tube wall 211) is set to 18 °, optimal tangential to ensure
Flowing.Described second flow deflector 213 is identical with the first flow deflector 212 structure, after it is arranged on the first flow deflector 212, and and the
One flow deflector 212 staggers 60 ° and is connected in tube wall 211, and its laying angle is set to 36 DEG C, is used for reducing resistance and strengthening circumferential flow
Intensity.It addition, the 3rd or more flow deflector can be arranged the most again according to actual separation effect, laying angle gradually increases.Institute
State motor 214 connect and drive the first flow deflector 212 and the second flow deflector 213, to regulate laying angle, thus can obtain more
Good centrifugal effect, knows and makes flow deflector 212,213 adapt to different operating modes.Described flow transducer 215 is arranged on tube wall 211
Interior central authorities, the ECU1 numerical analysis cyclonic separation effect by reading flow quantity sensor 215, and control motor accordingly
214, 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, and minor face 213 is along the axis of tube wall 211
Extend;For reducing resistance, its leading edge frustrates into obtuse;For avoiding streaming, trailing edge is processed into wing;Its height is tube wall 211 diameter
0.4 times, make the spiral flow of formation have bigger intensity;1.8 times of a length of tube wall 211 diameter, bigger right to ensure
The sphere of action of fluid.
Described magnetized module 22 is force-magnetized by the ferromagnetic metal wear particle that carries in fluid, and makes micron-sized
Wear particle aggregates into bulky grain, can improve the output signal strength of sensor.Described magnetizing assembly 22 is by aluminum matter pipeline
221, some windings 222, iron shell 223 and flange 224 form.Wherein, described aluminum matter pipeline 221 makes fluid flow from which
Cross and by magnetization treatment, and the pcrmeability of aluminum is the lowest, can make to obtain in pipeline 221 higher magnetic field intensity.
Described some windings 222, rotating around outside aluminum matter pipeline 221, are coated insulation by the copper wire of a diameter of about 1.0mm
Paint is made.Described iron shell 223 is coated on aluminum matter pipeline 221, and the material of irony 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, and it can use homopolarity phase
Adjacent type absorbing ring.This homopolarity adjacent type absorbing ring by aluminium ring shape pipeline 231, forward solenoid 232, reverse solenoid 233 with
And the parts such as irony magnetic conduction cap 234 composition.Wherein, described forward solenoid 232 and reverse solenoid 233 are respectively arranged in aluminum matter
In circulating line 231 and being controlled by ECU 1, both are connected with electric current in opposite direction so that forward solenoid 232 and reverse helical
Pipe 233 adjacent produces like pole.Described irony magnetic conduction cap 234 is arranged on the inwall of aluminium ring shape pipeline 231, and it is positioned at
Forward solenoid 232 and reverse solenoid 233 adjacent and forward solenoid 232 and the centre of reverse solenoid 233 axis
Point.
The design principle of described homopolarity adjacent type absorbing ring is as follows: energising forward solenoid 232, reverse solenoid 233, phase
Adjacent forward solenoid 232, reverse solenoid 233 are connected with electric current in opposite direction so that forward solenoid 232, reverse helical
Pipe 233 adjacent produces like pole;Meanwhile, aluminium ring shape pipeline 231 can improve magnetic circuit, strengthens the magnetic field at inner-walls of duct
Intensity, strengthens the irony magnetic conduction cap 234 capture absorbability to granule.Each forward solenoid 232, reverse solenoid 233 electric current
Directly controlled by ECU1, can be different with concentration and change, to obtain optimal adsorption performance according to the size of granule.
Further, the homopolarity adjacent type absorbing ring that described magnetic suck module 23 may be used without charged hammer, this band shocks by electricity
The homopolarity adjacent type absorbing ring of hammer is by aluminium ring shape pipeline 231, forward solenoid 232, reverse solenoid 233, irony magnetic conduction cap
234, dividing plate 235, the parts such as hammer 236 and electric magnet 237 that shock by electricity form.Wherein, described forward solenoid 232 and reverse helical
Pipe 233 is respectively arranged in aluminium ring shape pipeline 231 and by ECU1 control, and 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 is arranged in aluminium ring shape pipe
On the inwall in road 231, it is positioned at forward solenoid 232 and reverse solenoid 233 adjacent and forward solenoid 232 and anti-
Intermediate point to solenoid 233 axis.Described electric shock hammer 236 and electric magnet 237 are between dividing plate 235.Described electric magnet 237
Connect and electric shock hammer 236 can be promoted, making electric shock hammer 236 percussion aluminium ring shape pipeline 232 inwall.Described ECU1 is electrically connected with and controls
Forward solenoid 232 processed, 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 spiral shell
Spool 233, adjacent forward solenoid 232, reverse solenoid 233 are connected with electric current in opposite direction so that forward solenoid
232, reverse solenoid 233 adjacent produces like pole;Meanwhile, aluminium ring shape pipeline 231 can improve magnetic circuit, strengthens pipeline
Magnetic field intensity at inwall, strengthens the irony magnetic conduction cap 234 capture absorbability to granule.Each forward solenoid 232, reverse spiral shell
Spool 233 electric current is directly controlled by ECU1, can be different with concentration and change, to obtain optimal adsorption according to the size of granule
Performance.And by the setting of electric shock hammer 236, prevent granule bulk deposition at irony magnetic conduction cap 234, affect adsorption effect.This
Time, controlled the inwall of electric shock hammer 236 percussion pipeline 231 by electric magnet 237 so that adsorbed granule scatter to both sides.
Meanwhile, when cleaning pipeline 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, and paramagnetism aluminum matter pipeline loses magnetism,
It is attached to magnetic polymeric bulky grain on inner-walls of duct will be disengaged from tube wall and enter electrification module 24 with fluid along tube wall with low speed.
Described electrification module 24 makes the non-ferromagnetic metal wear particle in hydraulic oil charged, its by some electrodes 241 with
And one electrode controller 242 form.Described some electrodes 241 are installed on fluid pressure line 7, and it is respectively connecting to electrode controller
242.Described electrode controller 242 is electrically connected with and applies voltage to electrode 241, 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, and it is by aluminum matter pipe
Road 251, positive plate 252, minus plate 253 and pole plate controller 254 form.Wherein, described positive plate 252, minus plate 253 points
It is not arranged on aluminum matter pipeline 251, and in being oppositely arranged;Described positive plate 252, minus plate 253 are respectively and electrically connected to pole plate
On 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 with fluid with speed
V flows into electric adsorption module 25 along tube wall, and two electrodes of the negative and positive of electric adsorption module 25 525,253 are controlled by pole plate controller 254
Produce the uniform electric field vertical with speed V direction, then charged corpuscle is subject to be perpendicular to velocity attitude in electric field is centrifuged module
The effect of electric field force, makes charged particle do parabolic motion to pole plate under this force, and charged corpuscle is inhaled along the direction of motion
Other microgranule attached forms polymeric macroparticle.This parabolic motion specifically refer to charged corpuscle axially follow fluid do straight line fortune
Dynamic, radially then do at the uniform velocity or variable motion under electric field force effect, changing electric field intensity by pole plate controller 254 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
Time, it is attached to magnetic polymeric bulky grain on inner-walls of duct and will be disengaged from tube wall and enter rotation moulding mould with fluid along tube wall with low speed
Block 3.
The moulding module of described rotation 3 is for improving the sensitivity of detection.Research shows: the inductance rate of change of cell winding
It is directly proportional to the cube of abrasive particle radius.Meanwhile, the form of magnetizing mediums more trends towards elongate, and its demagnetizing factor is the least, magnetization
Intensity is the biggest, and magnetizing field field intensity is the biggest.Change on sensor equivalent inductance affects the biggest.The moulding module of this rotation 3 is by aluminum matter
A few part groups such as pipeline 31, some windings 32, iron shell 33, flange 34 and the moulding current output module of some rotations 35
Become.Wherein, described some windings 32 are rotating around outside aluminum matter pipeline 31;Described iron shell 33 is coated on aluminum matter pipeline 31;
Described flange 34 is welded on the two ends of aluminum matter pipeline 31;The moulding current output module of each rotation 35 is connected to a winding 32.
The design principle of the moulding module of described rotation 3 is as follows: polymeric macroparticle enters with fluid after rotating moulding module 3,
ECU1 controls to rotate moulding current output module 35, makes to flow through three-phase symmetrical electric current in the moulding current output module of rotation 35, should
Electric current produces rotating excitation field in aluminum matter pipeline 31.Magnetized particles is acted on by magnetic field force under rotating excitation field effect, and
Spirally advancing under the effect of this power, magnetic microparticles defines a lot of acicular texture along magnetic line of force direction, these acicular textures
Magnetic field will be followed spin motion when magnetic field rotating, and specifically move along a straight line axially following fluid, radially then follow rotation
Turn magnetic field to spin motion.Adjust three-phase symmetrical electric current and can change speed and the track of screw.Needle-like knot when motion
When metal particle on structure and movement locus meets with, it is combined with one another to bulky grain polymer.By rotating moulding module 3, make oil
The particle diameter of the metal particle in liquid increases form simultaneously and becomes elongated acicular texture so that the fiber number of metal particle increases the most greatly
Add, further enhancing 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 particle size and material become
During change, its changes of magnetic field caused is the faintest, if detection Magnetic field inhomogeneity will cause serious measurement error, makes detection spirit
Sensitivity reduces;Requiring that the characteristic of excitation coil I and excitation coil II is completely the same, this is usually extremely difficult to simultaneously, for this
The excitation coil I and excitation coil II needing design has the function of on-line automatic regulation.Specifically, described excitation coil I4
All comprising some windings with excitation coil II6, each winding is made up of positive winding 41 and inverse winding 42, and each winding is respectively connecting to one
Exciting current output module 43.This exciting current output module 43 is by ECU1 control, and its digital potentiometer used is
AD5206, has the output of 6 passages, can and ECU1 between realize single bus data transmission.It is right that ECU1 is realized by monobus
The current settings of the polylith exciting current output module 73 of magnetization winding and output.Amplifier AD8601 and metal-oxide-semiconductor 2N7002 pass through
Negative feedback achieves the output of high-precision voltage follow.Constant High-current output have employed the high voltage of Texas Instrument (TI), big
Amplifier OPA 549 of electric current.
The operation principle of described detection coil 7 is as follows: in order to produce the magnetic field in same polarity direction and make up breach and make simultaneously
The magnetic field become is unbalanced, and positive winding 41 is identical with the current characteristics in inverse winding 42, arranges on the axis direction of conduit under fluid pressure 7
There is multipair forward and reverse winding, control electric current by different exciting current output modules 43, it is possible to form the uniform magnetic of system requirements
?.
Because the abrasive particle in liquid is the least, the impact on former magnetic field is the least, and the flux change amount i.e. produced is the least,
The sensitivity high in order to ensure sensor, needs to obtain big induction electromotive force in induction coil.According to Faradic electricity magnetic strength
Answering law, the size of induced electromotive force and being directly proportional by the rate of change of the magnetic flux of conductor circuit, its direction depends on magnetic field
Direction and situation of change.When magnetic flux change is less, big to make its rate of change, its approach has two kinds: one to be to increase former line
The number of turn of circle, but sensor bulk so can be caused excessive, inadvisable;One be former magnetic field magnetic flux be zero, be i.e. in zero magnetic field
In.Based on this, three groups of coils of the employing of the sensor of this design.Excitation coil I4 and excitation coil II6 is handed over by high frequency
Stream power drives, two coil differential concatenations, the magnetic direction of generation is contrary, and described induction coil 5 be positioned at excitation coil I4 and
Central authorities between excitation coil II6, can make magnetic field at induction coil 5 cancel out each other, be zero magnetic field.Induction coil 5 and ECU
Connect.When in fluid by there being metal bulky grain, cause disturbance of magnetic field, cause induction coil 5 to produce induction electromotive force, utilize
Ferromagnetics and the non-ferromagnetic material metal particle otherwise impact to former magnetic field, cause phase of output signal contrary, can distinguish in fluid
Wear particle type;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, detection
Sensitivity is the highest.
The concrete grammar using above-mentioned supervising device to be monitored hydraulic oil is as follows:
1), the fluid in fluid pressure line 7 passes through wave filter 8, the high, medium and low frequency range that wave filter 8 is decayed in hydraulic system
Fluctuation pressure, and suppression flowed fluctuation;
2), fluid enters the mechanical centrifugal module 21 separating adsorption module 2 afterwards, makes the wear particle in fluid be polymerized also
Realizing 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 controlled to produce and speed by ECU1
The uniform magnetic field that degree v direction is vertical, charged particle is subject to be perpendicular to the Lip river logical sequence of velocity attitude and magnetic direction in segregation apparatus
The effect of magnetic force, makes charged particle under this force to aluminum matter vessel wall motion, so that the non-ferromagnetic metal in fluid
Wear particle " separates " out from fluid, and absorption is on tube wall.
7), after magnetic suck and electro-adsorption to enough particle concentrations, ECU1 first controls electric adsorption module 25 by electric field side
To first reversely, then cancel electric field, then adsorb non-ferromagnetic metal wear particle on tube wall and start to depart from tube wall delay from static
Slow-motion enters to rotate moulding module 3, and electric adsorption module 25 the most then recovers original electric field.Meanwhile, ECU1 controls magnetic suck mould
Block 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, electrification
The power-off of module 24, ferromagnetic particle flows through electrification module 24 and electric adsorption module 25 with low speed with fluid, enters rotation 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
Controlling to flow through three-phase symmetrical electric current in three-phase symmetric winding, this electric current produces rotating excitation field in aluminum matter pipeline.Magnetized particles exists
Being acted on by magnetic field force under rotating excitation field effect, and the most spirally advance, magnetic microparticles is along the magnetic line of force
Direction defines a lot of acicular texture, and these acicular textures will be followed magnetic field and be spinned motion when magnetic field rotating, when motion
When metal particle in acicular texture and movement locus meets with, it is combined with one another to bulky grain polymer.
9), by rotating moulding module 3, make the particle diameter of the metal particle in fluid increase form simultaneously and become elongated needle-like
Structure so that the fiber number of metal particle is also greatly increased, further enhancing the sensitivity of Double-coil type detection.This two class subsequently
Microgranule enters excitation coil I4, ECU1 with the state of low speed, high concentration, bulky grain and big fiber number in batches and controls exciting current holding
The magnetic field homogeneity of excitation coil I4, simultaneously because the power of test of Ferrous particles is greater than copper by the inductance of same model
The power of test of granule, need ECU1 regulation exciting current to compensate this difference, with keep output concordance.
10), excitation coil I4 and excitation coil II6 is driven by high-frequency ac power, two coil differential concatenations, the magnetic of generation
Field direction is contrary, is positioned at magnetic field at the induction coil 5 of both central authorities and cancels out each other, when in fluid by there being metal bulky grain,
Cause disturbance of magnetic field, cause induction coil 5 to produce significant 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, and induction electromotive force
Power may determine that the quantity of abraded metal particle, thus realizes that signal conformance is good, reliability is high, detection signal is strong and error
Little contactless detection of particulates.
Above detailed description of the invention is only the preferred embodiment of this creation, not in order to limit this creation, all in this wound
Any modification, equivalent substitution and improvement etc. done within the spirit made and principle, should be included in this creation protection domain it
In.
Claims (10)
1., with a double excitation solenoid type microgranule sensor for operating mode adaptive-filtering, it is arranged on fluid pressure line, its
Be characterised by: include wave filter, separate adsorption module, rotate moulding module, excitation coil I, excitation coil II, induction coil with
And ECU;Wherein, described wave filter, separate adsorption module, rotate moulding module, excitation coil I, induction coil, excitation coil II
It is successively set on fluid pressure line;Described excitation coil I and excitation coil II differential concatenation;Described induction coil is positioned at excitation line
Central authorities between circle I and excitation coil II;Described ECU is electrically connected with and controls wave filter, separation adsorption module, rotates and mould
Shape module, excitation coil I, excitation coil II and induction coil;Described wave filter includes input pipe, shell, outlet tube, Thin Elastic
Wall, plug-in type H mode filter and plug-in type cascaded H mode filter;Described input pipe is connected to one end of shell;Described output
Pipe is connected to the other end of shell, itself and separation adsorption module docking;Described elastic thin-wall is installed on shell along the radial direction of shell
In;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 cavity volume I and resonance series
Separated by an elastic baffle between cavity volume II;Some conical damping holes are uniformly had in the axial direction of described elastic thin-wall;Described
Uniformly having some tapers in the axial direction of elastic baffle and insert pipe, pipe connection resonance series cavity volume I and series connection are inserted in described taper
Resonance cavity volume II;Described plug-in type H mode filter is positioned at parallel resonance cavity volume, and it is connected with conical damping hole;Described slotting
Entering formula cascaded H mode filter and be positioned at resonance series cavity volume I and resonance series cavity volume II, it is also connected with conical 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 type
Wave filter;Described separation adsorption module is by the mechanical centrifugal module being sequentially connected with, magnetized module, magnetic suck module, electrification module
And electric adsorption module composition.
2. the double excitation solenoid type microgranule sensor using operating mode adaptive-filtering as claimed in claim 1, its feature exists
In: the axis of described input pipe and outlet tube is the most on the same axis;The described wider place of conical damping hole opening is positioned at series connection altogether
Shaking in cavity volume I and parallel resonance cavity volume, its taper angle is 10 °;Described taper is inserted the wider place of tube opening and is positioned at resonance series appearance
In the II of chamber, its taper angle is 10 °;Described taper is inserted the position of pipe and conical damping hole and is mutually staggered;Described elastic thin-wall
Inner side 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 Thin Elastic
Wall, is connected by some pillars are fixing between outer layer elastic thin-wall and internal layer elastic thin-wall;Described outer layer elastic thin-wall and internal layer bullet
It is filled with, in interlayer between property thin-walled, the pure water adding antifreezing agent, in pure water, is suspended with Bio-sil;Described colloid damps
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. the double excitation solenoid type microgranule sensor using operating mode adaptive-filtering as claimed in claim 1, its feature exists
In: described mechanical centrifugal module uses eddy flow to be centrifuged module;Described eddy flow be centrifuged module include eddy flow tube wall, the first flow deflector,
Second flow deflector, motor and flow transducer;Wherein, described first flow deflector is provided with 3, these 3 first flow deflectors
Being 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 phase
With, 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;Institute
The long limit stating the 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 the wing
Shape, 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 first to lead
Flow and the second flow deflector, to regulate laying angle;Described flow transducer is arranged on the central authorities in tube wall.
4. the double excitation solenoid type microgranule sensor using operating mode adaptive-filtering as claimed in claim 1, its feature exists
In: described magnetized module includes aluminum matter pipeline, some windings, iron shell and flange;Wherein, described some windings 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. the double excitation solenoid type microgranule sensor using operating mode adaptive-filtering as claimed in claim 1, its feature exists
In: 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
In pipeline, both are connected with electric current in opposite direction so that forward solenoid and reverse solenoid adjacent produce like pole;Institute
State irony magnetic conduction cap to be arranged on the inwall of aluminium ring shape pipeline, its be positioned at forward solenoid and reverse solenoid adjacent, with
And forward solenoid and the intermediate point of reverse solenoid axis.
6. the double excitation solenoid type microgranule sensor using operating mode adaptive-filtering as claimed in claim 1, its feature exists
In: described magnetic suck module uses the homopolarity adjacent type absorbing ring of charged hammer, the homopolarity adjacent type absorbing ring of this charged hammer
Including 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 just
Like pole is produced to solenoid and reverse solenoid adjacent;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 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 electricity
Magnet connects and can promote electric shock hammer, makes electric shock hammer tap aluminium ring shape inner-walls of duct.
7. the double excitation solenoid type microgranule sensor using operating mode adaptive-filtering as claimed in claim 1, its feature exists
In: described electrification module includes some electrodes and an electrode controller;Described some electrodes are installed on fluid pressure line, its point
It is not connected to electrode controller.
8. the double excitation solenoid type microgranule sensor using operating mode adaptive-filtering as claimed in claim 1, its feature exists
In: described electric adsorption module includes aluminum matter pipeline, positive plate, minus plate and pole plate controller;Wherein, described positive plate, the moon
Pole plate is separately positioned on aluminum matter pipeline, and in being oppositely arranged;Described positive plate, minus plate are respectively and electrically connected to pole plate control
On device;Described pole plate controller is electrically connected to ECU, and by ECU control.
9. the double excitation solenoid type microgranule sensor using operating mode adaptive-filtering as claimed in claim 1, its feature exists
In: the moulding module of described rotation includes that aluminum matter pipeline, some windings, iron shell, flange and the moulding electric current of some rotations are defeated
Go out module;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. the double excitation solenoid type microgranule sensor using operating mode adaptive-filtering as claimed in claim 1, its feature exists
In: described excitation coil I and excitation coil II all comprises some windings, and each winding is made up of positive winding and inverse winding, each winding
Being respectively connecting to an exciting current output module, this exciting current output module is controlled by ECU module.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610311882.2A CN105954167A (en) | 2016-05-12 | 2016-05-12 | Dual exciting solenoid type particle sensitive device adopting working condition adaptive filtering |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610311882.2A CN105954167A (en) | 2016-05-12 | 2016-05-12 | Dual exciting solenoid type particle sensitive device adopting working condition adaptive filtering |
Publications (1)
Publication Number | Publication Date |
---|---|
CN105954167A true CN105954167A (en) | 2016-09-21 |
Family
ID=56911658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610311882.2A Pending CN105954167A (en) | 2016-05-12 | 2016-05-12 | Dual exciting solenoid type particle sensitive device adopting working condition adaptive filtering |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105954167A (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN85109568A (en) * | 1985-12-26 | 1987-07-01 | 中国人民解放军工程兵工程学院野战工程系工程机械教研室 | The purification mechanism and the structure of multimachine reason high accuracy oil conditioner |
US4686469A (en) * | 1985-08-12 | 1987-08-11 | Tribometrics, Inc. | Method and device for measuring magnetic particles in a fluid |
CN87101425A (en) * | 1987-11-21 | 1988-08-24 | 李培滋 | Filter |
US5588535A (en) * | 1994-10-12 | 1996-12-31 | Synectic Technology, Inc. | Sample preparation system for separating wear particles by size and magnetic characteristics |
US5674401A (en) * | 1991-12-11 | 1997-10-07 | Computational Systems, Inc. | Oil monitor with magnetic field |
CN1546198A (en) * | 2003-11-28 | 2004-11-17 | 邝念曾 | Method and system for purifying hydraulic-oil |
CN103558127A (en) * | 2013-11-12 | 2014-02-05 | 北京理工大学 | Differential online oil abrasive particle sensor testing system |
CN103998141A (en) * | 2011-12-23 | 2014-08-20 | 曼·胡默尔有限公司 | Centrifugal-force separator and filter arrangement having a centrifugal-force separator of said type |
-
2016
- 2016-05-12 CN CN201610311882.2A patent/CN105954167A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4686469A (en) * | 1985-08-12 | 1987-08-11 | Tribometrics, Inc. | Method and device for measuring magnetic particles in a fluid |
CN85109568A (en) * | 1985-12-26 | 1987-07-01 | 中国人民解放军工程兵工程学院野战工程系工程机械教研室 | The purification mechanism and the structure of multimachine reason high accuracy oil conditioner |
CN87101425A (en) * | 1987-11-21 | 1988-08-24 | 李培滋 | Filter |
US5674401A (en) * | 1991-12-11 | 1997-10-07 | Computational Systems, Inc. | Oil monitor with magnetic field |
US5588535A (en) * | 1994-10-12 | 1996-12-31 | Synectic Technology, Inc. | Sample preparation system for separating wear particles by size and magnetic characteristics |
CN1546198A (en) * | 2003-11-28 | 2004-11-17 | 邝念曾 | Method and system for purifying hydraulic-oil |
CN103998141A (en) * | 2011-12-23 | 2014-08-20 | 曼·胡默尔有限公司 | Centrifugal-force separator and filter arrangement having a centrifugal-force separator of said type |
CN103558127A (en) * | 2013-11-12 | 2014-02-05 | 北京理工大学 | Differential online oil abrasive particle sensor testing system |
Non-Patent Citations (2)
Title |
---|
杜润: "液压系统脉动衰减器的特性分析", 《中国博士学位论文全文数据库工程科技Ⅱ辑》 * |
桑青青: "多薄板振动式脉动衰减器滤波机理与特性分析", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105891057A (en) | Double-excitation solenoid type particle sensitive detection device adopting full-band filtering | |
CN106053300A (en) | Double excitation solenoid type particle sensitive detection method adopting full band filtering | |
CN205786203U (en) | A kind of microgranule sensitivity detection equipment of full frequency band structure changes operating mode adaptive-filtering | |
CN105865987A (en) | Method for monitoring oil by means of full-frequency-band variable-structure filtering, adsorbing and molding | |
CN205786210U (en) | With operating mode adaptive-filtering, absorption and moulding twin coil Oil Monitoring device | |
CN105973776A (en) | Double-exciting solenoid type particle sensing method adopting working condition adaptive filtering | |
CN106018215A (en) | Double-exciting solenoid type abrasion particle online detecting method with filter | |
CN205786206U (en) | A kind of double excitation solenoid type wear particle on-line detecting system using wave filter | |
CN106018191A (en) | Double-excitation solenoid type particle detection method achieved through full-frequency-band work condition self-adaptive filtering | |
CN205786205U (en) | With full frequency band structure changes operating mode adaptive-filtering and moulding Oil Monitoring equipment | |
CN106018192A (en) | Double-coil oil monitoring method with wave suppression, separation and molding | |
CN105954156A (en) | Double-excitation-solenoid particle sensitive device adopting variable-structure working condition adaptive filtering | |
CN105891059A (en) | Double-excitation solenoid type online wear particle detection system adopting filter | |
CN106018189A (en) | Particle sensitivity detection method using full-band variable-structure working condition adaptive filtering | |
CN106018187A (en) | Double-exciting solenoid type particle online detecting method with variable structure filtering | |
CN205786207U (en) | A kind of double excitation solenoid type microgranule sensitive equipment of full frequency band structure changes filtering | |
CN105954167A (en) | Dual exciting solenoid type particle sensitive device adopting working condition adaptive filtering | |
CN105891055A (en) | Particle sensitive detecting equipment using full-band variable structure working condition self-adaptive filtering | |
CN206114472U (en) | Adopt full frequency channel operating mode adaptive filtering , separation and moulding fluid monitoring device | |
CN106018217A (en) | Double-exciting solenoid type particle sensitive method with wave suppression | |
CN205786204U (en) | Use structure changes filtering, separate and moulding twin coil Oil Monitoring system | |
CN105865985A (en) | Double-excitation solenoid type particle online detection system with variable-structure filtering function | |
CN105865986A (en) | Oil monitoring equipment based on full-band variable-structure working condition adaptive filtering and molding | |
CN105891061A (en) | Liquid oil monitoring device adopting full-band and variable-structure filtering, absorbing and shaping | |
CN105865984A (en) | Oil monitoring method based on full-band variable-structure working condition adaptive filtering and molding |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160921 |