CN104847924B - High-speed rotating valve and flow parameter real-time detecting device for visualization observation - Google Patents
High-speed rotating valve and flow parameter real-time detecting device for visualization observation Download PDFInfo
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- CN104847924B CN104847924B CN201510140370.XA CN201510140370A CN104847924B CN 104847924 B CN104847924 B CN 104847924B CN 201510140370 A CN201510140370 A CN 201510140370A CN 104847924 B CN104847924 B CN 104847924B
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- 238000012800 visualization Methods 0.000 title abstract 5
- 230000008901 benefit Effects 0.000 claims abstract description 4
- 238000011179 visual inspection Methods 0.000 claims description 27
- 239000002828 fuel tank Substances 0.000 claims description 22
- 238000005259 measurement Methods 0.000 claims description 21
- 241000219739 Lens Species 0.000 claims description 18
- 210000000695 crystalline len Anatomy 0.000 claims description 18
- 238000011897 real-time detection Methods 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 210000003128 head Anatomy 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
- 239000000523 sample Substances 0.000 claims description 2
- 230000003760 hair shine Effects 0.000 claims 1
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 27
- 238000005516 engineering process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- 239000010729 system oil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/065—Construction of housing; Use of materials therefor of taps or cocks with cylindrical plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A high-speed rotating valve and flow parameter real-time detecting device for visualization observation comprises a prototype-plane observation valve, a high-speed visualization observing and analyzing device and a flow parameter real-time measuring and signal collecting device. The high-speed visualization observing and analyzing device comprises a high-speed video machine and a processor, a camera of the high-speed video machine is aligned with an observation window, the signal output end of the high-speed video machine is connected with the signal input end of the processor, and the signal output end of the processor is connected with the data input end of the flow parameter real-time measuring and signal collecting device. The flow parameter real-time measuring and signal collecting device comprises a signal collecting device and a flow measuring device, wherein the signal input end of the signal collecting device is connected with the corresponding signal output end of the processor, and the signal output end of the signal collecting device is connected with the signal input end of the flow measuring device. The high-speed rotating valve and flow parameter real-time detecting device for visualization observation has the advantages that high-speed/amplification shooting is carried out on the inner air hole flow phenomenon in the rotating valve in a microspur range, and meanwhile flow, vibration, noise and other parameter information data are collected in real time.
Description
Technical field
The present invention relates to a kind of high speed rotary valve and flow parameter real-time detection apparatus for visual inspection.
Background technology
New electro-hydraulic vibration exciter improves it is critical only that for excited frequency increases high speed rotary valve spool ditch slot number or raising valve element
Rotating speed, can cause valve port flow area to reduce or moment flow velocity increases, and so as to produce a large amount of air pockets, not only result in flow resistance
Plug, meanwhile, bubble crumbles and fall the pressure fluctuation for causing can also be defeated to system formation strong nonlinearity interference, the frequency of impact excitation system
Go out precision and stability.In addition, existing exciting property calculation is all that the characteristic parameter such as flow, pressure in system is carried out linearly
Change it is assumed that due to serious non-linear of flow equation, exciting waveform and frequency characteristic can be caused with traditional linearisation mathematical modulo
The result that type is solved is very different.In addition, when excitation valve switching frequency increases, theoretical frequency of vibration can be carried further
Height, but increasing with the air pocket scale at valve port and degree, once a large amount of air pocket obstruction runners cause flow saturation, amplitude
Deep fades, the frequency of vibration of excitation system can not reach theoretical frequency of vibration.Therefore, the air pocket observation of rotary valve inside is carried out real
Test, while realizing flow, pressure, vibrating isoparametric synchro measure, become corrected Calculation parameter, improve flow passage structure and improve
The crucial and bottleneck of vibrator performance.
The content of the invention
The present invention is directed at present to high speed rotary valve inside air pocket observation experiment, while realizing the parameters such as flow, pressure, vibration
The problem of measurement inconvenience, it is proposed that one kind is measured as in real time starting point from flow field inner high speed visual inspection and flow parameter,
Using high-speed camera and synchronizing signal measurement (collection) technology realize exciter structure transform, lifting exciting performance for visual
Change the high speed rotary valve and flow parameter real-time detection apparatus of observation.
High speed rotary valve and flow parameter real-time detection apparatus for visual inspection of the present invention, its feature exists
In：Including the measurement in real time of prototype-plane vision valve, high speed visual inspection and analytical equipment, flow parameter and signals collecting dress
Put, oil-out, the oil-in of described prototype-plane vision valve connect to form loop with oil circuit oil inlet and outlet respectively；Described
Prototype-plane vision valve includes the valve pocket that valve body, valve element and valve core rotation coordinate, and described valve end is equipped with transparent sight
Examine window；Described valve interior wall is provided with the first oil pocket and the second oil pocket connected with body cavity, and the first described oil pocket
Connect with oil-in, the second oil pocket is connected with oil-out；Described valve element end is connected with motor output shaft, described valve element
The circumferentially disposed multiple valve element notches of front end side wall；Described sleeve side wall interval setting it is multiple enter oil outlet, and ensure first
Oil pocket and the second oil pocket relevant position are equipped with and enter accordingly oil outlet；
Described high speed visual inspection includes high-speed camera, processor, described high-speed camera with analytical equipment
The described prototype-plane vision valve of photographic head alignment observation window, and the signal output part of described high-speed camera with
Described processor signal input connection, the signal output part of described processor and the measurement in real time of described flow parameter with
Signal pickup assembly data input pin is connected；
The measurement in real time of described flow parameter includes signal pickup assembly, flow measurement device, institute with signal pickup assembly
The signal input part of the signal pickup assembly stated signal output part corresponding with processor is connected, signal output part and flow measurement
The signal input part of device is connected.
Further, described observation window is axially arranged with apart from regulating bolt, and described bolt head end is equipped with and valve body
The observation board of inner chamber matching, and described observation board side wall is circumferentially with the fluting consistent with valve element notch.
Further, described signal pickup assembly includes that the pressure/pulse for fluid pressure fluctuations in detection threshold body is passed
Sensor, for the audiofrequency spectrometer of flow noise in detection threshold body, described flow rate-measuring device includes image record/analyser, makes an uproar
Acoustical acknowledgment signal instrument, pressure/pulse signal monitor, the signal output of described image analyzer signal input part and processor
End is connected；Described audiofrequency spectrometer signal output part is connected with described noise signal monitor signal input part, the sense of audiofrequency spectrometer
Should pop one's head in, described pressure/impulser is respectively placed in prototype-plane vision valve side.
Further, described high speed visual inspection is also equipped with by condenser lenss, without strobe light, regulation electricity with analytical equipment
The light filling light path that source is constituted, the described light edge for being electrically connected without strobe light and described regulation power supply, sending without strobe light
Shooting direction irradiation, and light through optically focused mirror be covered in the photographic head of high-speed camera shoot the visual field in prototype-
Plane vision valve surface.
Further, described high-speed camera to take the photograph camera lens vertical with valve outer wall.
Further, in oil circuit plunger displacement pump, wave filter are sequentially distributed on the pipeline between fuel tank and valve body oil-in, wherein
The oil-out of fuel tank is connected with the oil-in of plunger displacement pump, and the oil-out of plunger displacement pump is connected with the oil-in of wave filter, wave filter
Oil-out is connected with valve body oil-in.
Or, be sequentially distributed on the pipeline between fuel tank and valve body oil-in in oil circuit proportional variable pump, wave filter and
Effusion meter, is sequentially provided with counterbalance valve and precision pressure gauge, and fuel tank on the pipeline between fuel tank oil-in and valve body oil-out
It is distributed between oil-out and proportional variable pump, between wave filter and effusion meter, between fuel tank oil-in and valve body oil-out
Connected by high-pressure hose between filter, described proportional variable pump and wave filter.
Further, temperature sensor is configured on fuel tank.
Further, it is furnished with proportional pressure control valve on the pipeline between fuel tank and wave filter oil-out.
Further, described observation window is fixed on the valve end with valve element front end homonymy by fastening bolt.
Further, described valve body cross section is square, and valve element notch is located at valve body center；Valve element notch
Number is respectively 2,4,6,8 with valve pocket window number, and valve body, valve pocket use transparent organic glass, and transparent windows are opened on valve body
With light source incidence window, to observe interior flow field and air pocket state.
Further, described high power concentrator mirror converges power 1kW, the colour temperature 5 without frequency halogen light lamp, more than 500K.
The course of work：High speed rotary valve observation model is connected on accumulator during experiment.Can shape in view of the impurity in hydraulic oil
Into nucleon, the unstability for causing cavitation to occur, system is most exceeded using the method for height precision filter circulating filtration
Filter precision is 20 μm.The import and export of model valve are provided with pressure and impulser close proximity to the position of valve pocket to be used to measure before valve port
Fluid pressure fluctuations afterwards.Pulsation when high-pressure hose and wave filter can flow to fluid decays, laboratory table operating portion
Divide and mainly rotary valve inside air pocket shape information is obtained using high speed observation procedure.Experiment high-speed camera adopts simultaneous observation
Method, changes high speed rotary valve spool rotating speed, adjusts high-speed camera filming frequency, is allowed to identical with valve core rotation frequency or into integer
Times, to obtain steady and audible image.Meanwhile, the change information of flow system flow is obtained in real time by high precision flow, it is real
The existing flow-field visualized synchronous acquisition with flow-data.
In order to carry out front observation to the flow phenomenon inside valve port, camera lens will be parallel with valve axis and be kept
Vertical with outside wall surface, lens aperture and time of exposure are adjusted in shooting process makes image obtain best definition and brightness value.
Because the movement velocity of valve port fluid is exceedingly fast, and notch is small-sized, needs to carry out microshot, and two aspects all give shooting work
Very big difficulty is brought, the fluid of one side high-speed motion is easy to produce the phenomenons such as fuzzy tail, on the other hand micro-
Because coverage is limited under pattern, focusing range and focusing are restricted, it is difficult to the flowing in whole spatial dimensions
Phenomenon is caught.And in the case of larger multiplying power microshot, the effective f-number of camera lens drastically reduces, corresponding shutter
Speed also drastically declines, and at this time the requirement to light source is just very high.Therefore, increase light intensity extremely important, need to carry out high power
Light filling+light source converges technology.Under microshot pattern, pick-up lenss are near enough with rotary valve notch distance, but due to valve element
It is opaque, need to be illuminated by the way of frontlighting (or side light filling), appropriate space is reserved between camera lens and valve body
Pass through light.Further, since the valve core rotation of rotary valve, in order to observe the appearance position of air pocket when cavitation phenomenon occurs, not
Under changing lens focusing point and screening-mode, constantly adjustment light source position is needed.
Flow field signal acquiring system is mainly detected using two ways to valve inner flow field, first with pressure/arteries and veins
Sensor and measurement apparatus measurement notch and the distribution of valve pocket internal pressure and pulsation situation are rushed, high speed visual inspection is secondly adopted
The method combined with noise spectrum analysis obtains valve inner air pocket shape information, while recording noise information, and form
Change the dependency relation with noise characteristic, and the situation of change to flow system flow is recorded, and then to air pocket form, sound
The dependency relation of level and discharge characteristic is analyzed.
The invention has the advantages that：To rotary valve inside in the range of microspur, particularly gas in notch narrow range
Cave flow phenomenon carries out high speed/bust shot, while the parameter information real time data acquisitions such as flow, vibration and noise are carried out, directly
Sight judges valve port cavitation and flow saturation, the dependency relation between resonance and noise spectrum, and then explores effectively suppression
The valve body structure of air pocket, reaches and suppresses air pocket, reduction to vibrate and improve the purpose of exciting performance.
Description of the drawings
Fig. 1 is one of the structure chart of prototype-plane vision valve of the present invention (arrow represents motor direction of rotation).
Fig. 2 is the A-A sectional views of Fig. 1 of the present invention.
Fig. 3 is two (arrow represents motor direction of rotation) of the structure chart of the prototype-plane vision valve of the present invention.
Fig. 4 is the B-B sectional views of Fig. 3 of the present invention.
Fig. 5 is the high speed visual inspection and analytical equipment structured flowchart of the present invention.
Fig. 6 is the structured flowchart of the high speed visual inspection with analysis system device of the present invention.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings
Referring to the drawings：
The high speed rotary valve and flow parameter real-time detection apparatus for visual inspection of the present invention of embodiment 1, bag
The measurement in real time of prototype-plane vision valve 1, high speed visual inspection and analytical equipment 2, flow parameter and signal pickup assembly 3 are included,
Oil-out 11, the oil-in 12 of described prototype-plane vision valve 1 connects to form loop with the oil inlet and outlet of oil circuit 4 respectively；It is described
Prototype-plane vision valve 1 include the valve pocket 15 that valve body 13, valve element 14 and valve core rotation coordinate, the described end of valve body 13 dress
There is transparent observation window 131；The described inwall of valve body 13 is provided with the first oil pocket 132 and the second oil pocket with the inner space of valve body 13
133, and the first described oil pocket 132 is connected with oil-in 12, the second oil pocket 133 is connected with oil-out 11；Described valve element
14 ends are connected with the output shaft of motor 16, the circumferentially disposed multiple valve element notches 141 of the front end side wall of described valve element 14；Described
The sidewall spacers of valve pocket 15 arrange it is multiple enter oil outlet 151, and ensure that the first oil pocket 132 and the relevant position of the second oil pocket 133 are equal
It is provided with and enter accordingly oil outlet 151；
Described high speed visual inspection includes high-speed camera 21, processor 22 with analytical equipment 2, and described high speed is taken the photograph
The observation window 131 of the prototype-plane vision valve 1 described in the photographic head alignment of camera 21, and described high-speed camera 21
Signal output part is connected with the described signal input part of processor 22, the signal output part of described processor 22 and described stream
In real time measurement is connected dynamic parameter with the data input pin of signal pickup assembly 3；
The measurement in real time of described flow parameter includes signal pickup assembly 31, flow measurement device with signal pickup assembly 3
32, the signal input part of described signal pickup assembly 31 is connected with the corresponding signal output part of processor 22, signal output part
It is connected with the signal input part of flow measurement device 32.
Further, described observation window 131 is axially arranged with apart from regulating bolt 134, and the described head end of bolt 134 dress
There is the observation board 135 matched with the inner chamber of valve body 13, and the described side wall of observation board 135 is circumferentially with and valve element notch 141 1
The fluting of cause.
Further, described signal pickup assembly 31 is included for the pressure/pulse of fluid pressure fluctuations in detection threshold body
Sensor 311, for the audiofrequency spectrometer 312 of flow noise in detection threshold body, described flow rate-measuring device 32 include image record/
Analyser 321, noise signal monitor 322, pressure/pulse signal monitor 323, the described signal of image analyzer 321 is defeated
Enter end to be connected with the signal output part of processor 22；The described signal output part of audiofrequency spectrometer 312 is recorded with described noise signal
The connection of the signal input part of instrument 322, the inductive probe of audiofrequency spectrometer 312, described pressure/impulser 311 be respectively placed in prototype-
The side of plane vision valve 1.
Further, described high speed visual inspection and analytical equipment 2 be also equipped with by condenser lenss 23, without strobe light 24,
The light filling light path that regulation power supply 25 is constituted, it is described be electrically connected without strobe light 24 and described regulation power supply 25, without strobe light
24 light for sending are along the irradiation of shooting direction, and light passes through optically focused mirror 23 in the photographic head for being covered in high-speed camera 21
Shoot the prototype-surface of plane vision valve 1 in the visual field.
Further, described high-speed camera 21 takes the photograph camera lens and the outer wall vertical of valve body 13.
Further, in oil circuit 4 it is sequentially distributed plunger displacement pump 42, mistake on the pipeline between fuel tank 41 and the oil-in 12 of valve body 13
Filter 43, the wherein oil-out of fuel tank 41 are connected with the oil-in of plunger displacement pump 42, oil-out and the wave filter 43 of plunger displacement pump 42
Oil-in is connected, and the oil-out of wave filter 43 is connected with the oil-in of valve body 13.
Or, proportional variable pump 44, filter are sequentially distributed on the pipeline between fuel tank 41 and the oil-in of valve body 13 in oil circuit 4
Ripple device 45 and effusion meter 46, be sequentially provided with the pipeline between the oil-in of fuel tank 41 and the oil-out 11 of valve body 13 counterbalance valve 411 and
Between precision pressure gauge 412, and the oil-out of fuel tank 41 and proportional variable pump 44, between wave filter 43 and effusion meter 46, fuel tank
Filter 43 is distributed between 41 oil-ins and the oil-out 11 of valve body 13, between described proportional variable pump 44 and wave filter 45
Connected by high-pressure hose 47.
Further, temperature sensor 413 is configured on fuel tank 41.
Further, it is furnished with proportional pressure control valve 414 on the pipeline between fuel tank 41 and wave filter oil-out.
Further, described observation window 131 is fixed on the end of valve body 13 with the front end homonymy of valve element 14 by fastening bolt 136
Portion.
Further, the described cross section of valve body 13 is square, and valve element notch 141 is located at the center of valve body 13；
Valve element notch 141 is counted and is respectively 2,4,6,8 with the window number of valve pocket 15, and valve body, valve pocket 15 use transparent organic glass, valve body
Transparent windows 131 and light source incidence window are opened on 13, to observe interior flow field and air pocket state.
Further, described high power concentrator mirror 23 converges power 1kW, the colour temperature 5 without frequency halogen light lamp 24, more than 500K.
Specifically, valve element 14 is rotated by high-speed electric expreess locomotive 16, when valve element 14 is in the A-A section line positions of Fig. 1, liquid
Force feed enters valve element notch 141, valve element 13 and the notch cooperation side of valve pocket 15 through oil-in 12 via the oil pocket 132 of valve body 13 first
Formula as shown in cross section A-A, in rotary course notch connect-closure alternately, hydraulic oil is via the oil groove of observation board 135 from second
Oil pocket 133 proceeds to oil-out 11 and flows out.Now high-speed camera 21 is placed in the direction of the diameter parallel of valve element 13, side observation air pocket
Flow regime；When valve element 14 is in the B-B section line positions of Fig. 3, the flow-passing surface of valve element 13 overlaps with left side observation board 135,
Notch number, shape and distribution and all same on the contact surface of valve element 14 on observation board 135, high-speed camera 21 is placed in the transparent sight in left side
The opposite direction of window 131 is surveyed, prototype measurement is converted to into plane vision, the flow regime of front observation air pocket is (while can side sight
Air pocket state in measurement flow channel).Because plane vision has incomparable advantage than three-dimensional prototype observation, therefore effect is more preferable.
On the basis of camera lens and light source are selected, the arrangement of high speed camera 21 and building to image quality for light path system
Vital effect is played, transparent observation valve 1 is square stereochemical structure, and valve element notch 141 is located at the centre of valve body 13,
In order to carry out front observation to the flow phenomenon inside valve port, camera lens 21 are vertical with the holding of the outside wall surface of valve body 13.
Under microshot pattern, pick-up lenss 21 are near enough with observation window 131, observation board 135 and the distance of valve element 14, but due to valve element
It is opaque, need to be illuminated by the way of frontlighting (or side light filling), appropriate sky is reserved between camera lens and valve body 13
Between pass through light.Further, since the indent of valve element notch 141 is in spool face, in order to observe air pocket when cavitation phenomenon occurs
There is position, in the case where lens focusing point and screening-mode is not changed, need constantly adjustment light source position, this point is in light path system
Build middle particular importance.The novel part of the device is also resided in, and without changing valve body 13 and valve pocket 15, only need to change valve element 13
Or axial movement valve element 14 position is just capable of achieving the conversion of observed pattern and angle, omnibearing stereo realizes high speed rotary valve valve
Air pocket observation in mouth/runner.
Although high-speed camera shooting speed can reach 120,000 width/second, more than 20, during the 000 width/more than second, effectively
Aperture reduces rapidly, and luminous flux is restricted, light intensity wretched insufficiency, needs to converge light source and light filling technology using high power.
The technology using metal halide without stroboscopic halogen light lamp 24 (power 1kW, colour temperature 5, more than 500K, color index Ra92) laterally along
The irradiation of shooting direction, with high power concentrator mirror 23 by light collection to valve port, surrounding carries out light filling with professional reflective blank is imaged,
And with special high frequency stabilized current supply 25, the piece axial plane produced with laser instrument is compared, and converged light has more deep and broad transmission range, energy
The whole air pocket forms in whole valve pocket are caught in moment.
The inside of high-speed camera 21 using ISO mega pixel cmos sensor, silent frame 1024 × 1024 point
Can reach 2 under resolution, the shooting speed of 000 width/second, in the case where resolution is reduced, shooting speed reaches as high as 120,
000 width/second.Lens aperture and time of exposure are adjusted in shooting process makes image obtain best definition and brightness value, shooting
As a result being sent to image record/analyser 321 carries out post processing.During high-speed camera, noise spectrum instrument 322 is placed in valve body 13
Opposite side, obtains the filtered system of noise spectrum signal and reaches the preservation of noise spectrum monitor 322 process, at the same time, pressure/
Pulse signal reaches pressure/pulse signal monitor 12 and is recorded by the pressure/impulser 311 installed in valve body.System
System oil circuit and synchronization signal acquisition system are as shown in Figure 3.Filter 43, high-pressure hose 46 and wave filter 43 can guarantee that filter out it is mixed
The miscellaneous impurity in fluid, while impact of the fuselage shaking to valve body is avoided, by high speed air pocket image, flow, pressure and arteries and veins
It is dynamic to wait the synchronization of signal to obtain, the source of noise and vibration can be effectively judged, to form the rotary valve valve body of effectively suppression air pocket
Structure.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, the protection of the present invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also includes art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (10)
1. the high speed rotary valve and flow parameter real-time detection apparatus of visual inspection are used for, it is characterised in that：Including prototype-plane
Observation valve, high speed visual inspection and analytical equipment, flow parameter are measured in real time and signal pickup assembly, described prototype-put down
Oil-out, the oil-in of face observation valve connects to form loop with oil circuit oil inlet and outlet respectively；Described prototype-plane vision valve bag
The valve pocket that valve body, valve element and valve core rotation coordinate is included, described valve end is equipped with transparent observation window；In described valve body
Wall is provided with the first oil pocket and the second oil pocket connected with body cavity, and the first described oil pocket connect with oil-in, second
Oil pocket is connected with oil-out；Described valve element end is connected with motor output shaft, the front end side wall of described valve element is circumferentially disposed
Multiple valve element notches；Described sleeve side wall interval setting it is multiple enter oil outlet, and ensure the first oil pocket and the second oil pocket phase
Answer position to be equipped with and enter accordingly oil outlet；
Described high speed visual inspection and analytical equipment include high-speed camera, processor, and described high-speed camera is taken the photograph
The observation window of the prototype-plane vision valve described as head alignment, and the signal output part of described high-speed camera with it is described
The connection of processor signal input, the signal output part of described processor and described flow parameter measurement and signal in real time
Harvester data input pin is connected；
The measurement in real time of described flow parameter includes signal pickup assembly, flow measurement device with signal pickup assembly, described
The signal input part of signal pickup assembly signal output part corresponding with processor is connected, signal output part and flow measurement device
Signal input part be connected.
2. the high speed rotary valve and flow parameter real-time detection apparatus of visual inspection, its feature are used for as claimed in claim 1
It is：Described observation window is axially arranged with apart from regulating bolt, and described bolt head end is equipped with what is matched with body cavity
Observation board, and described observation board side wall is circumferentially with the fluting consistent with valve element notch.
3. the high speed rotary valve and flow parameter real-time detection apparatus of visual inspection, its feature are used for as claimed in claim 1
It is：Described signal pickup assembly is included for the pressure/impulser of fluid pressure fluctuations in detection threshold body, for visiting
The audiofrequency spectrometer of flow noise in side valve body, described flow measurement device includes that image record/analyser, noise signal are recorded
Instrument, pressure/pulse signal monitor, described image analyzer signal input part is connected with the signal output part of processor；Institute
The audiofrequency spectrometer signal output part stated is connected with described noise signal monitor signal input part, the inductive probe of audiofrequency spectrometer, institute
Pressure/the impulser stated is respectively placed in prototype-plane vision valve side.
4. the high speed rotary valve and flow parameter real-time detection apparatus of visual inspection, its feature are used for as claimed in claim 3
It is：Described high speed visual inspection is also equipped with by condenser lenss, the benefit constituted without strobe light, regulation power supply with analytical equipment
Light light path, described is electrically connected without strobe light and described regulation power supply, shines along shooting direction without the light that strobe light sends
Penetrate, and light passes through optically focused mirror in the prototype-plane vision valve being covered in the photographic head of the high-speed camera shooting visual field
Surface.
5. the high speed rotary valve and flow parameter real-time detection apparatus of visual inspection, its feature are used for as claimed in claim 4
It is：Described high-speed camera to take the photograph camera lens vertical with valve outer wall.
6. the high speed rotary valve and flow parameter real-time detection apparatus of visual inspection, its feature are used for as claimed in claim 1
It is：Plunger displacement pump, wave filter are sequentially distributed on the pipeline between fuel tank and valve body oil-in in oil circuit, wherein fuel tank is fuel-displaced
Mouth is connected with the oil-in of plunger displacement pump, and the oil-out of plunger displacement pump is connected with the oil-in of wave filter, the oil-out and valve of wave filter
Body oil-in is connected.
7. the high speed rotary valve and flow parameter real-time detection apparatus of visual inspection, its feature are used for as claimed in claim 1
It is：Proportional variable pump, wave filter and effusion meter are sequentially distributed on the pipeline between fuel tank and valve body oil-in in oil circuit, oil
Be sequentially provided with counterbalance valve and precision pressure gauge on pipeline between case oil-in and valve body oil-out, and fuel tank oil-out with than
Filter is distributed between example variable pump, between wave filter and effusion meter, between fuel tank oil-in and valve body oil-out, it is described
Proportional variable pump and wave filter between connected by high-pressure hose.
8. the high speed rotary valve and flow parameter real-time detection apparatus of visual inspection, its feature are used for as claimed in claim 7
It is：Temperature sensor is configured on fuel tank.
9. the high speed rotary valve and flow parameter real-time detection apparatus of visual inspection, its feature are used for as claimed in claim 2
It is：Described observation window is fixed on the valve end with valve element front end homonymy by fastening bolt.
10. the high speed rotary valve and flow parameter real-time detection apparatus of visual inspection, its feature are used for as claimed in claim 1
It is：Described valve body cross section is square, and valve element notch is located at valve body center；Valve element notch number and valve pocket groove
Mouth number is respectively 2,4,6 or 8, and valve body, valve pocket use transparent organic glass, transparent windows are opened on valve body and light source enters
Window is penetrated, to observe interior flow field and air pocket state.
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| CN109268344A (en) * | 2018-10-24 | 2019-01-25 | 武汉科技大学 | A kind of governor valve Instantaneous Flow test device and its test method |
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| CN107948525B (en) * | 2017-12-26 | 2020-09-08 | 北京航空航天大学 | Time sequence control and recording device suitable for high-speed photographic image and sensor signal |
| CN109635022B (en) * | 2018-10-31 | 2021-04-13 | 成都四方伟业软件股份有限公司 | Visual elastic search data acquisition method and device |
| CN110043534B (en) * | 2019-04-29 | 2020-06-23 | 兰州理工大学 | Visual experiment device and method for bubble flowing and bubble removal in hydraulic system |
| CN110259765B (en) * | 2019-06-24 | 2020-11-27 | 哈尔滨工业大学 | Visual experiment table for hydraulic valve performance detection |
| CN113865687B (en) * | 2021-08-31 | 2024-02-20 | 青岛海尔空调器有限总公司 | Pipeline vibration testing device |
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