CN105606474A - Device and method for testing anti-fluid erosion performance of microstructure - Google Patents
Device and method for testing anti-fluid erosion performance of microstructure Download PDFInfo
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- CN105606474A CN105606474A CN201510967350.XA CN201510967350A CN105606474A CN 105606474 A CN105606474 A CN 105606474A CN 201510967350 A CN201510967350 A CN 201510967350A CN 105606474 A CN105606474 A CN 105606474A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
Abstract
The invention discloses a method for testing anti-fluid erosion performance of a microstructure. The testing method comprises the following steps: firstly, mounting a sample with the microstructure on the surface into a tester; secondly, starting a liquid pumping device to enable liquid to erode the surface microstructure of the sample; thirdly, changing flow of a pipeline by adjusting the liquid pumping device and a flow controller, acquiring flow data of the pipeline by the flow controller, detecting pressure difference between a liquid inlet and a liquid outlet of the tester by a pressure difference transmitter, sending the detected data to a data acquisition device, and sending the acquired data to a computer by the data acquisition device; fourthly, drawing a differential pressure-flow curve by using data processing software, and evaluating the anti-fluid erosion performance of the microstructure according to the differential pressure at a sudden reduction position of the slope of the curve. The anti-fluid erosion performance is tested in allusion to an actual application occasion of the microstructure, so that the device and the method can fit an actual working condition; the device and the method are simple and easy to control; the test result is accurate and has an important reference value.
Description
Technical field
The present invention relates to a kind of experiment test device and method, be specifically related to a kind of micro-structural and resistFluid scouring performance testing device and method of testing thereof.
Background technology
Along with the progress of micro-nano measuring technique, the manufacture of surface of solids micro-structural becomes with applicationFor current study hotspot, and micro-structure surface has also been proved and had multiple property,As self-cleaning surface, augmentation of heat transfer, freezing, optics and the application of biologic medical aspect etc.Because the size of micro-structural is extremely tiny, traditional mechanical processing tools is difficult to realize, and superfinishingClose processing cost is high, and therefore, researcher has developed many on-mechanical manufacturing process,As special process methods such as chemical reaction, vapour deposition, electro-deposition, plasma technologies, soAnd mostly there is fragile structure, easy destroyed problem in micro-structural prepared by these class methods, because ofThis must carry out forecast assessment to the feasibility of its practical application before industrial production. For oneselfSurface micro-structure is essential will connect with liquid for clean surface, micro-channel heat exchanger, heat pipe etc.Touch, and liquid has certain speed and pressure, therefore this class surface micro-structure must be able to holdBe subject to washing away of certain pressure fluid and be not destroyed. But not yet there is at present the punching of micro-structural anti-current bodyBrush method of evaluating performance.
Summary of the invention
For the technical problem existing in prior art, the object of the invention is: provide a kind ofMicro-structural resisting fluid scouring performance testing device.
Another object of the present invention is to: the performance test of a kind of micro-structural resisting fluid scouring is providedMethod.
Object of the present invention is achieved through the following technical solutions: a kind of micro-structural resisting fluid scouringPerformance test methods, comprises the following steps:
Step 1: sample surface to micro-structural is installed in tester;
Step 2: open liquid pumping device and drive liquid to enter tester by pipeline, make liquidBody washes away the surface micro-structure of sample;
Step 3: by regulating liquid pumping installations and flow controller to change pipeline flow, withTime flow controller obtain the data on flows of pipeline and data on flows sent to data acquisitionDevice, detects the pressure differential between liquid inlet and the liquid outlet of tester by pressure difference transmitterAnd the data that detect are sent to data acquisition unit, data acquisition unit is by the data of collectingSend to computer;
Step 4: adopt data processing software drafting differential pressure-flow curve, prominent with the slope of curveSubtracting the corresponding pressure reduction in place evaluates micro-structural resisting fluid scouring performance.
Preferably, sample is placed in the flow path groove of tester, and liquid pumping device drives liquidThereby the micro-structural that body flows and washes away sample surfaces in flow path groove.
A kind of micro-structural resisting fluid scouring performance testing device, comprises liquid container, liquidBody pumping installations, flow controller, data acquisition unit, computer, pressure difference transmitter andFor the tester of sample being installed and liquid being washed away sample, liquid container,Liquid pumping device, flow controller and tester couple together by pipeline successively, streamAmount controller is connected with data acquisition unit respectively with pressure difference transmitter, data acquisition unit and calculatingMachine connects, and liquid pumping device is by the pump after flow controller of the liquid in liquid containerTo tester, pressure difference transmitter is for detection of between the liquid inlet of tester and liquid outletPressure differential also sends to data acquisition unit by the data that detect, flow controller is for controllingWith the fluid flow that detects inflow tester, flow controller is sent out the data on flows detectingDeliver to data acquisition unit, the data of collecting are sent to computer by data acquisition unit.
Preferably, described tester comprises cavity, gasket seal and cover plate, on cavity, opensBe provided with flow path groove, sample is arranged in flow path groove, and cover plate is covered on cavity, gasket sealBe arranged between cover plate and cavity.
Preferably, described cavity also offers two pressure test mouths, and two pressure test mouths respectivelyBe communicated to the two ends of flow path groove, the liquid inlet of tester and liquid outlet are opened in respectively streamThe two ends of road groove, liquid inlet and the liquid outlet of two pressure test mouths, tester are spiral shellPit.
Preferably, the hydraulic diameter at sample place place is below 7mm, between sample and flow path grooveInterference fits, sample length is more than 15mm.
Preferably, the surface micro-structure of sample is for utilizing chemical reaction, vapour deposition, electricity to sinkThe surface micro-structure long-pending or plasma technology manufacture forms.
Preferably, the liquid in liquid container is the Newtonian liquid of conductance higher than 5 μ S/cmBody.
Preferably, also comprise liquid collecting container, described liquid collecting container and testerLiquid outlet connects.
Preferably, the liquid in liquid container is water, dilute acid soln or dilute alkaline soln.
The present invention has following advantage and effect with respect to prior art:
1, the practical application that the present invention is directed to micro-structural is carried out the survey of resisting fluid scouring performanceExamination, the actual condition and simple and easy to control of fitting, test result is accurate, has important referenceBe worth, can obtain application at microstructure film or coatings art. It is anti-that the present invention makes up micro-structuralThe blank of fluid scouring performance test methods.
Thereby 2, the present invention can simulate the actual environment being washed of micro-structural sample is washed awayTest, avoided the tediously long and complicated problem of period of supervision, the present invention can also realizeWithin extremely short test period, complete the assessment that liquid washes away micro-structural, provide to actual productionReliable basis, visible, efficiency height of the present invention has high reliability simultaneously.
3, the present invention can for plurality of liquid test and fluid flow adjustable, therefore, canRealize different liquids in different flow situation or same liquid in different flow situationTest, visible the present invention can measure micro-structural resisting fluid scouring under different situations easilyPerformance.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the explosive view of tester of the present invention.
Fig. 3 is the structural representation of the cavity of tester of the present invention.
Fig. 4 is pressure reduction-flow curve that the embodiment of the present invention one is tested gained.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but thisBright embodiment is not limited to this.
Embodiment mono-:
A kind of micro-structural resisting fluid scouring performance testing device, comprises liquid container 1, liquidBody pumping installations 2, flow controller 3, data acquisition unit 4, computer 5, pressure difference transmitter 6And tester 8 for sample 7 being installed and liquid being washed away sample, fluid storageContainer, liquid pumping device, flow controller and tester have connected by pipeline successivelyCome, flow controller is connected with data acquisition unit respectively with pressure difference transmitter, data acquisition unitBe connected with computer, liquid pumping device by the liquid in liquid container through flow-controlAfter device, pump is to tester, and pressure difference transmitter is for detection of liquid inlet 9 and the liquid discharge of testerThe pressure differential △ P that mouth is 10 also sends to data acquisition unit, flow-control by the data that detectDevice flows into tester fluid flow Q for controlling sends the data on flows detecting simultaneouslyTo data acquisition unit, the data of collecting are sent to computer by data acquisition unit. Preferably,Described liquid pumping device is gear pump.
Preferably, described tester comprises cavity 11, gasket seal 12 and cover plate 13, chamberOn body, offer flow path groove 14, sample is arranged in flow path groove, and cover plate is covered on cavity,Gasket seal is arranged between cover plate and cavity.
Preferably, described cavity also offers two pressure test mouth 15, two pressure test mouths and dividesBe not communicated to the two ends of flow path groove, liquid inlet and the liquid outlet of tester are opened in respectivelyThe two ends of flow path groove, pressure difference transmitter is connected in two pressure test mouths.
Described, liquid inlet and the liquid outlet of two pressure test mouths, tester are spiral shellPit.
Preferably, the hydraulic diameter at sample place place is below 7mm, preferred, sample instituteBe below 5mm at the hydraulic diameter of locating.
Preferably, interference fits between sample and flow path groove, sample length is more than 15mm.Preferred, interference fits between sample and flow path groove, sample length is more than 20mm. SampleProduct length can be 20mm-1000mm.
Preferably, the surface micro-structure of sample is for utilizing chemical reaction, vapour deposition, electricity to sinkThe surface micro-structure long-pending or plasma technology manufacture forms.
Preferably, the liquid in liquid container is the Newtonian liquid of conductance higher than 5 μ S/cmBody.
Preferably, also comprise liquid collecting container 16, described liquid collecting container and testerLiquid outlet connect.
Preferably, the liquid in liquid container is water, dilute acid soln or dilute alkaline soln.
The course of work of the present invention and operation principle: surface is had to micro-structural in when testSample is installed in flow path groove; Sample length is 80mm. Sample surfaces micro-structural is for utilizing electricityDeposit manufacture forms;
Flow controller is set in to one compared with rill value, opens gear pump driven liquid and existThereby flow and wash away sample surfaces micro-structural in flow path groove; Liquid in the present embodiment is water,Now, the hydraulic diameter at sample place place is 0.5mm.
Change pipeline flow by regulating tooth wheel pump and flow controller, flow controller can obtainGet the data on flows of pipeline, utilize simultaneously pressure difference transmitter detect tester liquid inlet andPressure differential between liquid outlet, data acquisition unit is collected flow controller and pressure difference transmitter inspectionThe data that record the data that detection is obtained are sent to computer; Sample is washed awayAfter water flow out to liquid collecting container from the liquid outlet of tester.
Adopt data processing software drafting differential pressure-flow curve, along with the continuous increase of flow,Liquid pressure value in flow path groove also constantly increases, in the time that liquid pressure value arrives certain numerical value,The surface micro-structure of sample will be washed destruction, and now, fluid and wall friction reduce, andFlow path groove hydraulic diameter will increase to some extent, cause that pressure reduction-flow curve slope can reduce suddenly,Therefore, to cause that the corresponding pressure reduction in pressure reduction-flow curve slope anticlimax place rushes micro-structural anti-current bodyBrush performance is evaluated, as Fig. 4 represents the liquid that the micro-structural of the present embodiment sample surfaces can be bornBody force value is 20-22.5kPa.
Embodiment bis-:
A kind of micro-structural resisting fluid scouring performance test methods, comprises the following steps:
Step 1: sample surface to micro-structural is installed in tester;
Step 2: open liquid pumping device and drive liquid to enter tester by pipeline, make liquidBody washes away the surface micro-structure of sample;
Step 3: by regulating liquid pumping installations and flow controller to change pipeline flow, withTime flow controller obtain the data on flows of pipeline and data on flows sent to data acquisitionDevice, detects the pressure differential between liquid inlet and the liquid outlet of tester by pressure difference transmitterAnd the data that detect are sent to data acquisition unit, data acquisition unit is by the data of collectingSend to computer;
Step 4: adopt data processing software drafting differential pressure-flow curve, prominent with the slope of curveSubtracting the corresponding pressure reduction in place evaluates micro-structural resisting fluid scouring performance.
Preferably, sample is placed in the flow path groove of tester, and liquid pumping device drives liquidThereby the micro-structural that body flows and washes away sample surfaces in flow path groove.
Above-described embodiment is preferably embodiment of the present invention, but embodiments of the present invention alsoBe not restricted to the described embodiments other any Spirit Essence of the present invention and former that do not deviate fromManage the lower change of doing, modification, substitute, combine, simplify, all should be equivalent displacement sideFormula, within being included in protection scope of the present invention.
Claims (10)
1. a micro-structural resisting fluid scouring performance test methods, is characterized in that: comprise withLower step:
Step 1: sample surface to micro-structural is installed in tester;
Step 2: open liquid pumping device and drive liquid to enter tester by pipeline, make liquidBody washes away the surface micro-structure of sample;
Step 3: by regulating liquid pumping installations and flow controller to change pipeline flow, withTime flow controller obtain the data on flows of pipeline and data on flows sent to data acquisitionDevice, detects the pressure differential between liquid inlet and the liquid outlet of tester by pressure difference transmitterAnd the data that detect are sent to data acquisition unit, data acquisition unit is by the data of collectingSend to computer;
Step 4: adopt data processing software drafting differential pressure-flow curve, prominent with the slope of curveSubtracting the corresponding pressure reduction in place evaluates micro-structural resisting fluid scouring performance.
2. micro-structural resisting fluid scouring performance test methods according to claim 1, itsBe characterised in that: sample is placed in the flow path groove of tester, liquid pumping device drives liquidThereby the micro-structural that flows and wash away sample surfaces in flow path groove.
3. a micro-structural resisting fluid scouring performance testing device, is characterized in that: comprise liquidBody reservoir vessel, liquid pumping device, flow controller, data acquisition unit, computer,Pressure difference transmitter and the tester for sample being installed and liquid being washed away sample,Liquid container, liquid pumping device, flow controller and tester are successively by pipeRoad couples together, and flow controller is connected with data acquisition unit respectively with pressure difference transmitter, numberBe connected with computer according to collector, liquid pumping device is by the liquid warp in liquid containerAfter flow controller, pump is to tester, and pressure difference transmitter is for detection of the liquid inlet of testerAnd pressure differential between liquid outlet the data that detect are sent to data acquisition unit, flowController is for controlling and detect the fluid flow that flows into tester, and flow controller will detectTo data on flows send to data acquisition unit, data acquisition unit sends the data collectedTo computer.
4. micro-structural resisting fluid scouring performance testing device according to claim 3, itsBe characterised in that: described tester comprises cavity, gasket seal and cover plate, on cavity, offersHave flow path groove, sample is arranged in flow path groove, and cover plate is covered on cavity, and gasket seal is establishedBe placed between cover plate and cavity.
5. micro-structural resisting fluid scouring performance testing device according to claim 4, itsBe characterised in that: described cavity also offers two pressure test mouths, two pressure test mouths connect respectivelyLead to the two ends of flow path groove, the liquid inlet of tester and liquid outlet are opened in respectively runnerThe two ends of groove, liquid inlet and the liquid outlet of two pressure test mouths, tester are screw threadHole.
6. micro-structural resisting fluid scouring performance testing device according to claim 4, itsBe characterised in that: the hydraulic diameter at sample place place is below 7mm, mistake between sample and flow path grooveCross cooperation, sample length is more than 15mm.
7. micro-structural resisting fluid scouring performance testing device according to claim 3, itsBe characterised in that: the surface micro-structure of sample is for utilizing chemical reaction, vapour deposition, electro-depositionOr the surface micro-structure that forms of plasma technology manufacture.
8. micro-structural resisting fluid scouring performance testing device according to claim 3, itsBe characterised in that: the liquid in liquid container is the Newtonian liquid of conductance higher than 5 μ S/cmBody.
9. micro-structural resisting fluid scouring performance testing device according to claim 3, itsBe characterised in that: also comprise liquid collecting container, the liquid of described liquid collecting container and testerBody outlet connects.
10. micro-structural resisting fluid scouring performance testing device according to claim 3,It is characterized in that: the liquid in liquid container is water, dilute acid soln or dilute alkaline soln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510967350.XA CN105606474A (en) | 2015-12-18 | 2015-12-18 | Device and method for testing anti-fluid erosion performance of microstructure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510967350.XA CN105606474A (en) | 2015-12-18 | 2015-12-18 | Device and method for testing anti-fluid erosion performance of microstructure |
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| CN105606474A true CN105606474A (en) | 2016-05-25 |
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| CN201510967350.XA Pending CN105606474A (en) | 2015-12-18 | 2015-12-18 | Device and method for testing anti-fluid erosion performance of microstructure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108051350A (en) * | 2017-11-30 | 2018-05-18 | 华南理工大学 | A kind of porous material testing permeability device and test method |
| CN109946186A (en) * | 2019-04-19 | 2019-06-28 | 中国南方电网有限责任公司超高压输电公司柳州局 | Graphite-based flexible ground body washes away test device |
| CN112113871A (en) * | 2020-09-18 | 2020-12-22 | 哈尔滨工业大学 | Surface microstructure fluid erosion resistance testing device |
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| CN109946186B (en) * | 2019-04-19 | 2024-03-22 | 中国南方电网有限责任公司超高压输电公司柳州局 | Scouring testing device for graphite-based flexible grounding body |
| CN112113871A (en) * | 2020-09-18 | 2020-12-22 | 哈尔滨工业大学 | Surface microstructure fluid erosion resistance testing device |
| CN112113871B (en) * | 2020-09-18 | 2024-01-26 | 哈尔滨工业大学 | Surface microstructure fluid scouring resistance testing device |
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Application publication date: 20160525 |