CN103592218B - The integrated drag reduction testing arrangement of elastomer rubber sealing ring drag reduction testing arrangement and elastomer rubber sealing ring/non-smooth surface - Google Patents
The integrated drag reduction testing arrangement of elastomer rubber sealing ring drag reduction testing arrangement and elastomer rubber sealing ring/non-smooth surface Download PDFInfo
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- CN103592218B CN103592218B CN201310558447.6A CN201310558447A CN103592218B CN 103592218 B CN103592218 B CN 103592218B CN 201310558447 A CN201310558447 A CN 201310558447A CN 103592218 B CN103592218 B CN 103592218B
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Abstract
The object of the present invention is to provide the integrated drag reduction testing arrangement of elastomer rubber sealing ring drag reduction testing arrangement and elastomer rubber sealing ring/non-smooth surface, frequency converter, frequency modulation motor, torque signal coupler, the left end of power transmission shaft is connected successively, the right-hand member cover of power transmission shaft has axle sleeve, power transmission shaft is connected by flat key with axle sleeve, axle sleeve is positioned in test cavity, test cavity is fixed on device pedestal, match with test cavity through test cavity and by cavity angular contact ball bearing in the middle part of power transmission shaft, axle sleeve external stability has exemplar a set of cups, exemplar a set of cups and test cavity inner wall matched in clearance, on exemplar a set of cups, be provided with the cannelure for elastomer rubber sealing ring is installed, elastomer rubber sealing ring contacts with test cavity inner wall after being arranged on cannelure. the present invention's campaign is steady, simple and reliable for structure, pressure is controlled, easy disassembly.
Description
Technical field
What the present invention relates to is a kind of drag reduction testing arrangement, the specifically drag reduction testing arrangement of elastomer rubber sealing ring and non-smooth surface.
Background technology
At present, the research that relevant scholar reduces frictional resistance to application bionic non-smooth surface feature technology both at home and abroad has reached certain height, and has successfully obtained significant progress in many-side. The thought of non-elasticity smooth morphology body structure surface drag reduction and engineering bionics theory are applied to elasticity non-smooth surface and the metal surface Research of Drag Reduction in fluid or gas medium by various countries experts and scholars, resistance reducing performance to dimple-shaped non-smooth surface is analyzed, developing a kind of effective green drag reduction technology and open up the thinking of products innovation, is the through engineering approaches of the non-smooth drag reduction technology of bionical elastomeric material, the practical theoretical foundation that provides. Its research means mainly comprises the aspects such as theory analysis, numerical simulation, model test, finally by the resistance reducing performance of testing exemplar in experimental rig is compared, and draws required conclusion, and then puts in practical implementation again. No matter be theory analysis, also or numerical computations, the data precision all obtaining with model test is the highest, and closer to reality, therefore theory analysis, the means such as numerical simulation finally also all need inspection and the checking of test. Test method is as the important means of research bionic, non-smooth elastic surface drag reduction, for the development of the non-smooth elastic surface drag reduction technology of pushing bionic, improve drag reduction theory and have important effect. Bionic, non-smooth elastic surface can reduce the frictional resistance between elastomer and solid, drag-reduction effect is obvious, it is a kind of brand-new drag reduction technology, but the current research for technique mainly concentrates on theory analysis and numerical simulation stage, still there is no a set of complete bionic, non-smooth elastic surface resistance measurement experimental rig, therefore model test still cannot complete. Traditional drag reduction experimental study is carried out conventionally in the test machines such as wear test machine, but, because its cost is higher, cost is large, regular maintenance is difficult, noise pollution is serious, experimental condition various aspects all have certain limitation, and all cannot carry out the research of bionic, non-smooth elastic surface drag reduction test. What therefore, study, manufacture a kind of advanced person can be a very important task to the experimental rig of bionic, non-smooth elastic surface frictional resistance test.
Summary of the invention
The object of the present invention is to provide and can realize elastomer rubber sealing ring drag reduction testing arrangement and the integrated drag reduction testing arrangement of elastomer rubber sealing ring/non-smooth surface tested thering is different non-smooth surface structural elasticity bodies and rigid body frictional resistance.
The object of the present invention is achieved like this:
Elastomer rubber sealing ring drag reduction testing arrangement of the present invention, it is characterized in that: comprise frequency modulation motor, frequency converter, torque signal coupler, rubber seal test unit, rubber seal test unit comprises device pedestal, power transmission shaft, test cavity, frequency converter, frequency modulation motor, torque signal coupler, the left end of power transmission shaft is connected successively, the right-hand member cover of power transmission shaft has axle sleeve, power transmission shaft is connected by flat key with axle sleeve, axle sleeve is positioned in test cavity, test cavity is fixed on device pedestal, match with test cavity through test cavity and by cavity angular contact ball bearing in the middle part of power transmission shaft, axle sleeve external stability has exemplar a set of cups, exemplar a set of cups and test cavity inner wall matched in clearance, on exemplar a set of cups, be provided with the cannelure for elastomer rubber sealing ring is installed, elastomer rubber sealing ring contacts with test cavity inner wall after being arranged on cannelure, frequency modulation motor drives torque signal coupler and power transmission shaft rotation under the effect of frequency converter, and then drives the rotation of exemplar a set of cups and elastomer rubber sealing ring, thereby torque signal coupler obtains the torque value of elastomer rubber sealing ring.
Elastomer rubber sealing ring drag reduction testing arrangement of the present invention can also comprise:
1, permanent opening a set of cups on test cavity, opening a set of cups is between the left end and test cavity of power transmission shaft, and power transmission shaft, through opening a set of cups, is installed a set of cups angular contact ball bearing on opening a set of cups, and power transmission shaft matches with a set of cups angular contact ball bearing.
The integrated drag reduction testing arrangement of elastomer rubber sealing ring/non-smooth surface of the present invention, it is characterized in that: comprise frequency modulation motor, frequency converter, torque signal coupler, rubber seal test unit, non-smooth surface test unit, rubber seal test unit comprises device pedestal, power transmission shaft, test cavity, frequency converter, frequency modulation motor, torque signal coupler, the left end of power transmission shaft is connected successively, the right-hand member cover of power transmission shaft has axle sleeve, power transmission shaft is connected by flat key with axle sleeve, axle sleeve is positioned in test cavity, test cavity is fixed on device pedestal, match with test cavity through test cavity and by cavity angular contact ball bearing in the middle part of power transmission shaft, axle sleeve external stability has exemplar a set of cups, exemplar a set of cups and test cavity inner wall matched in clearance, on exemplar a set of cups, be provided with the cannelure for elastomer rubber sealing ring is installed, elastomer rubber sealing ring contacts with test cavity inner wall after being arranged on cannelure, on exemplar a set of cups, be fixed for the boss of installation test exemplar, boss and test exemplar are all positioned at test cavity external body, in the time elastomer rubber sealing ring being carried out to drag reduction experiment, frequency modulation motor drives torque signal coupler and power transmission shaft rotation under the effect of frequency converter, and then drive the rotation of exemplar a set of cups and elastomer rubber sealing ring, thereby torque signal coupler obtains the torque value of elastomer rubber sealing ring, non-smooth surface test unit comprises tailstock framework, leading screw, guide post, pressure sensor, test frictional plane, slip lid, guide post is arranged on the left side of tailstock framework, slip lid is sleeved on guide post, test friction surface is fixed on slip lid, leading screw is through tailstock framework, the left end of leading screw contacts with pressure sensor, pressure sensor is positioned in slip lid, when being moved to the left, leading screw can drive pressure sensor, slip lid and test friction surface are together moved to the left, tailstock frame installation is on device pedestal, tailstock framework is by V-type rail translation on device pedestal of its bottom, on device pedestal, be provided with rectangular channel, on tailstock framework, corresponding rectangular channel is provided with bolt hole, tailstock framework and device pedestal can be compressed to location by bolt and rectangular channel, in the time non-smooth surface being carried out to drag reduction experiment, on the cannelure of exemplar a set of cups, uneasiness shoots gonosome rubber seal, can make to test frictional plane by the movement of V-type rail and leading screw contacts with test exemplar, frequency modulation motor drives torque signal coupler and power transmission shaft rotation under the effect of frequency converter, and then motoring ring test exemplar rotation, thereby torque signal coupler obtains the torque value of test exemplar.
The integrated drag reduction testing arrangement of elastomer rubber sealing ring/non-smooth surface of the present invention can also comprise:
1, in tailstock framework, leading screw support is installed, leading screw, through leading screw support, is provided with screw thread and matches by screw thread separately on leading screw and leading screw support.
2, leading screw adopts triangle fine thread.
3, the right-hand member of device pedestal is provided with postioning abutment, thereby prevents coming off of tailstock framework.
4, permanent opening a set of cups on test cavity, opening a set of cups is between the left end and test cavity of power transmission shaft, and power transmission shaft, through opening a set of cups, is installed a set of cups angular contact ball bearing on opening a set of cups, and power transmission shaft matches with a set of cups angular contact ball bearing.
Advantage of the present invention is: invention itself has that cost is low, noise is low, volume is little, regular job is easy to maintenance, can adapt to preferably the advantage such as experimental condition around; Experimental rig not only can be realized the test completing under fixation pressure condition elastomer and rigid body non-smooth surface drag-reduction effect, also can be directed to the test of zero type rubber seal non-smooth surface drag-reduction effect; Test portion, as the core of this device, has the features such as motion is steady, simple and reliable for structure, pressure is controlled, easy disassembly, the easy replacing of test exemplar; The features such as bulk testing process has had energy-conserving and environment-protective, and precision is high, pollution-free.
Brief description of the drawings
Fig. 1 is layout drawing of the present invention;
Fig. 2 is DATA REASONING and collecting part schematic diagram;
Fig. 3 a is the partial structurtes sketch with non-smooth surface zero type rubber seal, and Fig. 3 b is A-A view, and Fig. 3 c is B-B view;
Fig. 4 a is screw thread nail pressing structure chart a, and Fig. 4 b is D-D view;
Fig. 5 is the test exemplar schematic diagram with non-smooth surface;
Fig. 6 is device pedestal guide rail structure figure;
Fig. 7 is elastomer rubber sealing ring drag reduction experimental provision structure chart;
Fig. 8 is that non-smooth surface carries out drag reduction experimental provision structure chart;
Fig. 9 is overall drag reduction experimental provision structure chart.
Detailed description of the invention
For example the present invention is described in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～9, structure of the present invention is mainly divided into power section, DATA REASONING and collecting part, test portion three parts, and wherein test portion comprises two processs of the test, i.e. process of the test a and process of the test b. The zero type rubber seal that process of the test a mainly realizes having non-smooth surface is carried out frictional resistance test, and the test exemplar that process of the test b mainly realizes having non-smooth surface carries out drag-reduction effect test. In process of the test a, the power source by frequency modulation motor 2 as whole table apparatus, under the control of frequency converter 1, for whole bench teat experiment device provides rotary power. When power transmission shaft 11 is during in rotation status, the zero type rubber seal 17 that drives its end exemplar a set of cups 18 and be fixed on exemplar a set of cups periphery groove is rotated with same angular velocity. Now, zero type rubber seal 17 outer surfaces will produce relative friction with test cavity 15 inwalls, and then generation frictional resistance, via power transmission shaft 11, the moment of torsion that resistance is changed into passes to the torque signal coupler 4 of DATA REASONING and collecting part, the zero type rubber seal 17 by contrast with non-smooth surface and the size of zero type torque value that rubber seal produces with smooth surface, and then assess drag-reduction effect. In addition, test exemplar in above-mentioned process of the test zero type rubber seal 17 is replaced by the revolving body rubber seal of rectangle or other cross sectional shapes, repeat above-mentioned test operation, also can realize the test of other elastomer rubber sealing ring drag-reduction effects to thering is non-smooth surface. In process of the test b, to take out zero type rubber seal 17, and exemplar a set of cups 18 is reentered into test cavity 15 inside, the test exemplar 21 with non-smooth surface is equipped with in its end. Then, by device pedestal 6 along V-type rail to test exemplar 21 translations with non-smooth surface, when its left part test frictional plane 25 approaches while having the test exemplar 21 of non-smooth surface, stop translation, and tailstock framework 34 and the rectangular channel of device pedestal 6 are fixed with four of the device both sides uniform elements such as bolt 37, pressing plate 36. After tailstock framework 34 and device pedestal 6 are fixing, the handle 35 of slow circumvolve device tailstock, by coupled leading screw 33, by the test frictional plane 25 of slip lid 26 related its upper ends of leading screw 33 ends along the uniform guide post 24 of slip lid 26 surroundings to left, thereby push mutually with the test exemplar 21 with non-smooth surface. By being placed in the pressure sensor 27 of slip lid 26 inside, now two interplanar extruding forces of output, after extruding force is constant, setscrew nut 29 is oppositely locked along leading screw 33 directions of feed. Rotate with a certain angular speed under the control of frequency converter 1 by frequency modulation motor 2, drive has test exemplar 21 rotation jointly thereupon of non-smooth surface, and then will produce certain frictional resistance between frictional plane 25 in test exemplar 21 and the test with non-smooth surface, this kind of frictional resistance reaches the form with moment of torsion the torque signal coupler 4 of DATA REASONING and collecting part via power transmission shaft 11, thus output torque value. The test exemplar 21 by contrast with non-smooth surface and the size of test torque value that exemplar produces with smooth surface, and then assess drag-reduction effect. In addition, test exemplar 21 in this process of the test and test frictional plane 25 are changed to respective material attribute, repeat above-mentioned test operation, can meet the test to many-sided resistance reducing performances such as elastomer-elastomer, elastomer-rigid body, rigid body-elastomer and rigid body-rigid bodies, also can meet the resistance reducing performance testing experiment requirement to non-smooth surface-non-smooth surface.
In conjunction with Fig. 1 and 2, power section is mainly made up of frequency modulation motor 2, frequency converter 1 and elastic dowel pin shaft coupling 3,5, and DATA REASONING and collecting part are mainly made up of relevant components and parts such as torque signal couplers 4. By bolt, the device bases such as frequency modulation motor 2, torque signal coupler 4 are connected with device pedestal 6, ensure the stability of this part in process of the test. Utilize elastic dowel pin shaft coupling 3,5 that the output shaft of frequency modulation motor 2 is connected with the input of power transmission shaft 11 with the power shaft of torque signal coupler 4, the output shaft of torque signal coupler 4, play the object of transferring power and moment of torsion.
DATA REASONING and collecting part operation principle:
Collect analog signal faint in process of the test by torque signal coupler 4, through the processing of transmitter conversion, amplification and filtering, the signal that sensor is collected is converted to the analog signal that can be connected with data acquisition module, analog signal is carried out A/D conversion through data acquisition module, change into and can, by the data signal of computer stored, be stored in computer. Wherein each module is connected to: input signal is that the terminal board of being joined by torque signal coupler 4 and acquisition module passes to acquisition module, and this data acquisition module is directly connected with the signal conversion module of torque signal coupler 4, and centre needs to adopt programmable amplifier. Wherein USB interface can directly be connected with notebook, and USB directly powers, without additional power source; There is LabVIEW driver, data can be saved under corresponding path with Excel document form, be convenient to processed offline.
Test portion is mainly made up of process of the test a and process of the test b.
In conjunction with Fig. 3,4 and 7, test portion a is mainly made up of power transmission shaft 11, bearing (ball) cover 9, opening a set of cups 10, test cavity 15, axle sleeve 16, flat key 14, exemplar a set of cups 18, zero type rubber seal 17, screw thread nail pressing 22, device pedestal 6, angular contact ball bearing 8,12 and screw 7,13 etc. Power transmission shaft 11 carries out axial and circumferential location by the angular contact ball bearing 8,12 matching with its two ends, angular contact ball bearing 8 is by the shaft shoulder location of bearing (ball) cover 9 with the power transmission shaft 11 of its upper end, bearing (ball) cover 9 has six uniform screws 7 to be connected with opening a set of cups 10, play fixation, the reliability and stability fully installing in guarantee test process. Adopting the object of opening a set of cups 10 is in order to ensure the stationarity of power transmission shaft 11 in rotary course, rocking of avoiding producing owing to rotatablely moving impacts result of the test, it is connected with test cavity 15 left sides by the uniform screw 13 in six of its right sides, power transmission shaft 11 stretches into test cavity 15 by test cavity 15 left end dead eyes, test cavity 15, by welding, is connected with device pedestal 6. Have axle sleeve 16 at power transmission shaft 11 right-hand member covers, its two be connected by flat key 14, power transmission shaft 11 end thread mill drillings. The structure of screw thread nail pressing 22 is mainly made up of three parts, be positioned at its left end threaded portion, be positioned at the splined section at its middle part and be positioned at the plane clamp portion of its right-hand member, and be processed with interior hexagonal pit in right side. Screw thread nail pressing 22 left end screw threads are meshed with the screwed hole of power transmission shaft 11 right-hand members, and the spline at its middle part matches with exemplar a set of cups 18 bottom splines, and the plane pressing plate of its right-hand member contacts with the bottom surface of exemplar a set of cups 18. Exemplar a set of cups 18 adopts matched in clearance with axle sleeve 16 cooperation places. In the time that exemplar a set of cups 18 and the zero type rubber seal 17 that is fixed on exemplar a set of cups 18 periphery grooves are installed and are dismantled, only spanner need to be stretched into the opening part of opening a set of cups 10, by clamping the quadrangular structure of power transmission shaft 11 Surface Machining, limit the rotation of power transmission shaft 11. Then, outer hexagonal spanner is stretched in the interior hexagonal pit of screw thread nail pressing 22 ends, by rotary spanner, can complete installation and the dismantlement work of experimental rig part. The zero type rubber seal 17 with non-smooth surface has according to research contents in zero smooth type rubber seal Surface Machining, the pit of arranging by certain rule or the structure of other shapes.
Process of the test a operation principle:
In process of the test a, first tailstock framework 34 is moved right to end position, avoid generating device in the time that process of the test a is operated to interfere, affect the carrying out of process of the test. Then, zero type rubber seal 17 is fixed on to exemplar a set of cups 18 surfaces. Subsequently, by screw thread nail pressing 22, the exemplar a set of cups 18 that zero type rubber seal 17 is housed is placed in to test cavity 15 inside, and is used in conjunction with spanner and outer hexagonal spanner by fixing to power transmission shaft 11, axle sleeve 16 and exemplar a set of cups 18. Finally, torque signal coupler 4 in device and frequency converter 1 are initialized, complete the preparation of process of the test a. Then, start frequency converter 1 and frequency modulation motor 2, utilize frequency converter 1, for frequency modulation motor 2 is set required rotating speed, and in whole process of the test, all according to above-mentioned rotation speed operation. When on-test, frequency modulation motor 2 output shaft rotations via elastic dowel pin shaft coupling 3, drive one end of torque signal coupler 4 to rotate thereupon. Rotatablely move and be passed to the power transmission shaft 11 of test portion by torque signal coupler 4, elastic dowel pin shaft coupling 5, make power transmission shaft 11 under the restriction of two ends angular contact ball bearing 8,12, rotate around its axis. The cooperation of flat key 14 by power transmission shaft 11 ends, screw thread, spline etc., makes it drive the zero type rubber seal 17 on exemplar a set of cups 18 and surface thereof jointly to rotate. By the zero type rubber seal 17 with non-smooth surface measured torque signal coupler 4 is contrasted with the different torque values that the zero type rubber seal with smooth surface produces, try to achieve drag reducing efficiency, and drag-reduction effect is carried out to assessment argument. In addition, test exemplar in above-mentioned process of the test zero type rubber seal 17 is replaced by the revolving body rubber seal of rectangle or other cross sectional shapes, repeat above-mentioned test operation, also can realize the test of the elastomer rubber sealing ring drag-reduction effect of other cross sectional shapes to thering is non-smooth surface, widen test range of application with this, meet the demand of in many ways testing.
In conjunction with Fig. 5,6 and 8, process of the test b is mainly made up of boss 20, non-smooth surface exemplar 21, slip lid 26, test frictional plane 25, guide post 24, pressure sensor 27, setscrew nut 29, leading screw 33, handle 35, leading screw support 31, tailstock framework 34, positive stop 39, bolt 37, pressing plate 36 and screw 19,23,28,30,32,38. Boss 20, by six uniform screws 19 of its left end, is connected with exemplar a set of cups 18 ends, and its other end fixedly has the test exemplar 21 of non-smooth surface by screw 23. Slip lid 26 left ends are fixed with test frictional plane 25, and inside is equipped with pressure sensor 27. In slip lid 26 surroundings, be evenly equipped with four through holes, and match with guide post 24. In through hole inside and all oiling lubricating oil of guide post 24 surface, pressure sensor 27 is measured the error producing when reducing hole axle relative sliding. Guide post 24 is by four screws uniform on the circular flat of bottom 30 and tailstock framework 34 concrete mutuallies. Tailstock framework 34 passes through V-type rail translation on device pedestal 6 of its bottom, and by rectangular channel, bolt 37 and pressing plate 36, tailstock framework 34 and device pedestal 6 is compressed to location. Tailstock framework 34 inside are fixed with two screw mandrel supports 31 that geomery is identical by screw 32, its objective is in order to ensure the stationarity of leading screw 33 in transmittance process. Leading screw support 31 inside are helicitic texture, thereby match with leading screw 33. Leading screw 33 adopts triangle fine thread, is that lift angle is little because the pitch of fine thread is little, and self-locking property is better, transmits comparatively accurately, is applicable to vibrate or connection and the micromatic setting etc. of varying load. Leading screw 33 left ends are smooth flat, contact with pressure sensor 27 ends, a positioning screw under relaxed state are housed, 29 near it. Leading screw 33 right parts are connected with handle 35, facilitate test operation personnel control to leading screw 33 amount of feeding in adjustment process. There is one by two positive stops 39 that screw 38 is fixing at device pedestal 6 afterbodys, object is in order to prevent in test operation process, due to contingency, causes tailstock framework 34 excessively to right translation, thereby release unit track, causes unnecessary potential safety hazard. The test exemplar 21 with non-smooth surface is on smooth surface, to be processed with according to research contents, by certain regularly arranged pit or the structure of other shapes.
Process of the test b operation principle:
In process of the test b, first take out the test exemplar in process of the test a, i.e. zero type rubber seal 17, and again install other parts except zero type rubber seal 17. First, by tailstock framework 34 slowly to left, when test frictional plane 25 is when having distance between the test exemplar 21 of non-smooth surface and comparatively approach, stop the motion that moves to left of tailstock framework 34, and with bolt 37, pressing plate 36 and rectangular channel by tailstock framework 34 and device pedestal 6 concrete mutuallies. Then, rotate the handle 35 of tailstock framework 34 rear ends, utilize leading screw 33 to promote slip lid 26, pressure sensor 27 and the test frictional plane 25 of front end. In the time that test frictional plane 25 contacts with the test exemplar 21 with non-smooth surface, reduce the rotary speed of handle 35, and then control the feed speed of leading screw 33. Now, due to the pressure sensor 27 two ends power that is squeezed, thereby by force value certain output, this force value is the compression between test exemplar 21 and the test frictional plane 25 with non-smooth surface. When the force value of exporting when pressure sensor 27 reaches the required force value of test, stop leading screw 33 feedings, and setscrew nut 29 is oppositely locked along leading screw 33 directions of feed, limit the feeding length of leading screw 33, and then ensure to have test exemplar 21 and the constant pressure of test between frictional plane 25 of non-smooth surface, for process of the test is after this prepared. Finally, torque signal coupler 4, frequency converter 1 in device are initialized, complete the preparation of process of the test b. Then, start frequency converter 1 and frequency modulation motor 2, utilize frequency converter 1, for frequency modulation motor 2 is set required rotating speed, and in whole process of the test, all according to above-mentioned rotation speed operation. When on-test, frequency modulation motor 2 output shaft rotations via elastic dowel pin shaft coupling 3, drive one end of torque signal coupler 4 to rotate thereupon. Rotatablely move and be passed to the power transmission shaft 11 of test portion by torque signal coupler 4, elastic dowel pin shaft coupling 5, make power transmission shaft 11 under the restriction of two ends angular contact ball bearing 8,12, rotate around its axis. The cooperation of flat key 14 by power transmission shaft 11 ends, screw thread, spline etc., makes it drive the rotation jointly with it of the fixing test exemplar 21 with non-smooth surface of exemplar a set of cups 18 end faces. By the test exemplar with non-smooth surface measured torque signal coupler 4 21 and the different torque values that the test exemplar with smooth surface produces are contrasted, try to achieve drag reducing efficiency, and drag-reduction effect is carried out to assessment argument. In addition, test exemplar 21 in this process of the test and test frictional plane 25 are changed to respective material attribute, repeat above-mentioned test operation, can realize the test to many-sided resistance reducing performances such as elastomer-elastomer, elastomer-rigid body, rigid body-elastomer and rigid body-rigid bodies, also can meet the test requirements document of the resistance reducing performance test to non-smooth surface-non-smooth surface.
Because this test character is contrastive test, therefore according to test requirements document, need to carry out many group tests to above-mentioned process of the test a and b, to realize the object of drag-reduction effect assessment.
Claims (6)
1. the integrated drag reduction testing arrangement of elastomer rubber sealing ring/non-smooth surface, is characterized in that: compriseFrequency modulation motor, frequency converter, torque signal coupler, rubber seal test unit, non-smooth surface testUnit, rubber seal test unit comprises device pedestal, power transmission shaft, test cavity, frequency converter, frequency modulationThe left end of motor, torque signal coupler, power transmission shaft is connected successively, and the right-hand member cover of power transmission shaft has axle sleeve, passesMoving axis is connected by flat key with axle sleeve, and axle sleeve is positioned in test cavity, and test cavity is fixed on device pedestal,Match with test cavity through test cavity and by cavity angular contact ball bearing in the middle part of power transmission shaft, axle sleeveExternal stability has exemplar a set of cups, and exemplar a set of cups and test cavity inner wall matched in clearance, be provided with on exemplar a set of cupsFor the cannelure of elastomer rubber sealing ring is installed, elastomer rubber sealing ring is arranged on after cannelure and examinationTest cavity inner wall and contact, on exemplar a set of cups, be fixed for the boss of installation test exemplar, boss and test samplePart is all positioned at test cavity external body; In the time elastomer rubber sealing ring being carried out to drag reduction experiment, frequency modulation motor existsUnder the effect of frequency converter, drive the rotation of torque signal coupler and power transmission shaft, so drive the rotation of exemplar a set of cups andElastomer rubber sealing ring, thus torque signal coupler obtains the torque value of elastomer rubber sealing ring; Non-Smooth surface test unit comprise tailstock framework, leading screw, guide post, pressure sensor, test frictional plane,Slip lid, guide post is arranged on the left side of tailstock framework, and slip lid is sleeved on guide post, and test friction surface is solidFix on slip lid, leading screw is through tailstock framework, and the left end of leading screw contacts with pressure sensor, pressure sensingDevice is positioned in slip lid, can drive pressure sensor, slip lid and test friction surface one when leading screw is moved to the leftWith being moved to the left, tailstock frame installation is on device pedestal, and tailstock framework exists by the V-type rail of its bottomTranslation on device pedestal, is provided with rectangular channel on device pedestal, on tailstock framework, corresponding rectangular channel is provided with spiral shellKeyhole, can compress location by tailstock framework and device pedestal by bolt and rectangular channel, when to non-smooth surfaceWhile carrying out drag reduction experiment, on the cannelure of exemplar a set of cups, uneasiness shoots gonosome rubber seal, leads by V-typeThe movement of rail and leading screw can make to test frictional plane and contact with test exemplar, and frequency modulation motor is at frequency converterEffect is lower drives torque signal coupler and power transmission shaft rotation, and then the rotation of motoring ring test exemplar, thus moment of torsionSignal coupler obtains the torque value of test exemplar.
2. the integrated drag reduction test of elastomer rubber sealing ring/non-smooth surface according to claim 1Device, is characterized in that: leading screw support is installed in tailstock framework, and leading screw is through leading screw support, leading screw and leading screwOn support, be provided with screw thread and match by screw thread separately.
3. the integrated drag reduction test of elastomer rubber sealing ring/non-smooth surface according to claim 2Device, is characterized in that: leading screw adopts triangle fine thread.
4. according to the arbitrary described integrated drag reduction of elastomer rubber sealing ring/non-smooth surface of claim 1-3Testing arrangement, is characterized in that: the right-hand member of device pedestal is provided with postioning abutment, thereby prevents tailstock frameworkCome off.
5. according to the arbitrary described integrated drag reduction of elastomer rubber sealing ring/non-smooth surface of claim 1-3Testing arrangement, is characterized in that: permanent opening a set of cups on test cavity, opening a set of cups is positioned at the left end of power transmission shaftWith between test cavity, power transmission shaft, through opening a set of cups, is installed a set of cups angular contact ball bearing on opening a set of cups,Power transmission shaft matches with a set of cups angular contact ball bearing.
6. the integrated drag reduction test of elastomer rubber sealing ring/non-smooth surface according to claim 4Device, is characterized in that: permanent opening a set of cups on test cavity, opening a set of cups is positioned at left end and the examination of power transmission shaftTest between cavity, power transmission shaft, through opening a set of cups, is installed a set of cups angular contact ball bearing, transmission on opening a set of cupsAxle matches with a set of cups angular contact ball bearing.
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| CN106596049B (en) * | 2017-01-23 | 2023-03-31 | 浙江工业大学 | Testing device for testing drag reduction effect of non-smooth hydrofoil surface |
| CN106938535B (en) * | 2017-05-09 | 2023-07-11 | 广东东晟密封科技有限公司 | Full-automatic smooth counter and use method thereof |
| CN110672243A (en) * | 2019-09-29 | 2020-01-10 | 北京动力机械研究所 | Testing device capable of adjusting air inlet and exhaust high-temperature dynamic seal friction force |
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| CN103592218A (en) | 2014-02-19 |
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