CN104133077A - Particle image velocity measurement testing device for testing internal flow field of retarder - Google Patents
Particle image velocity measurement testing device for testing internal flow field of retarder Download PDFInfo
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- CN104133077A CN104133077A CN201410351177.6A CN201410351177A CN104133077A CN 104133077 A CN104133077 A CN 104133077A CN 201410351177 A CN201410351177 A CN 201410351177A CN 104133077 A CN104133077 A CN 104133077A
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Abstract
The invention discloses a particle image velocity measurement testing device for testing an internal flow field of a retarder. The particle image velocity measurement testing device comprises a pedestal, a motor, a front support, a rear support, a retarder assembly, a coupler, a hydraulic control system, a laser generator and a PIV high-speed camera, wherein the motor is fixed to the left end of the pedestal through an adjusting base plate; the front support and the rear support are fixed to the middle of the pedestal; the left end of the retarder assembly is mounted on the front support in a rotating mode, and the right end of the retarder assembly is fixedly mounted on the rear support; the coupler is arranged between an output shaft of the motor and an input shaft at the left end of the retarder assembly; the hydraulic control system is fixed to the right end of the pedestal; the laser generator is fixed to the radial position of the retarder assembly through a laser support; the PIV high-speed camera is fixed to the pedestal through a magnetic base and is aligned with the region, illuminated by a sheet light source generated by the laser generator, in the retarder assembly; a rotor and a stator are made of transparent materials. The particle image velocity measurement testing device breaks the limitation of an original structure of the retarder and can be used for measuring the internal flow field of the retarder rotor and controlling the filling rate of the retarder in real time, thereby meeting the requirements for different filling rates in tests.
Description
Technical field
The invention belongs to flow field measurement technique field, particularly a kind of particle image velocimetry (PIV) test unit for retarder stator and internal rotor flow-field test.
Background technology
Retarder is a kind of vehicle EBA device, is made up of stator and rotor two parts.Rotor drives fluid power to rotate and impact stator, and stator produces a reaction force acts on rotor by liquid, thereby hinders the rotation of rotor.Retarder is converted into the mechanical energy of equipment the heat energy of liquid, and by cooling system, it is dispelled the heat.
Compared with other brake system: the retarding torque of Retarder is directly proportional to five powers of the quadratic sum circulate circle diameter of its rotating speed, thereby the Retarder of high rotating speed systemic circulation circular diameter has larger retarding torque; The wearing and tearing of Retarder machinery-free, can be for a long time without the operation of overhauling, longer service life.
When Retarder is applied on highway, can greatly improve braking and transmission quality.In the time that long steep grade is descending, it can be accurate and the resistance of downstream rate is provided reliably continuously, ensures traffic safety; In the time that level road is braked, it can be reposefully without wearing and tearing provide approximately 90% required damping force of vehicle, finally make vehicle parking by friction catch.In whole braking procedure, velocity variations is even, does not occur impact phenomenon.In addition, due to the gradual braking of vehicle, reduce the damage of road pavement, thereby reduce pavement maintenance workload.
Numerical analysis mainly utilizes computational fluid dynamics (Computational Fluid Dynamics is called for short CFD) business software, first carries out the pre-treatment such as runner extraction, grid division, and then importing CFD software carries out iterative computation; In experimental method, be mainly that the transparent organic glass of the housing of fluid torque-converter is replaced to traditional metal material at present, then utilize laser Dppler veloicty measurement (Laser Doppler Velocimetry, being called for short LDV) technology or particle image velocimetry (Particle Image Velocimetry is called for short PIV) technology tests interior flow field.
For grasp that can be good with understand the flowing law of retarder interior flow field, improve the performance of retarder, it is carried out to PIV flow field tests the speed is necessary.
Prior art is retrieved to the experiment PIV test unit that does not have discovery to test retarder interior flow field.Sealing test specimen for PIV test use is all transparent.Analyze known to existing speed buffer structure, retarder rotor is to be all wrapped in the cavity of sealing of stator case and stator formation, even if retarder is made transparent, owing to being subject to the impact of integument liquid, be inaccurate to the test in its internal rotor flow field.
Summary of the invention
The present invention is in order to overcome prior art defect, propose a kind of for testing the particle image velocimetry test unit of retarder interior flow field, it not only can be realized retarder stator and internal rotor flow field are tested, also with hydraulic control system independently, detect pressure and the flow of the import and export of retarder, and can carry out step-less adjustment to the liquid filled ratio of retarder.
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
A kind of particle image velocimetry test unit for the test of retarder interior flow field, comprise pedestal 10, be fixed on the motor 1 of pedestal 10 left ends by adjusting backing plate 11, be fixed on front support 9 and the rear support 7 at pedestal 10 middle parts, left end rotation is installed on front support 9, right-hand member and is fixedly installed in the retarder assembly 3 of rear support 7; Be arranged on the shaft coupling 2 between motor 1 output shaft and retarder assembly 3 left end input shafts;
Also comprise the hydraulic control system 5 that is fixed on pedestal 10 right-hand members; Laser generator 41 and PIV high speed camera 39, described laser generator 41 supports 40 radial positions that are fixed on retarder assembly 3 by laser instrument, PIV high speed camera 39 is fixed on pedestal 10 by magnet base 38, PIV high speed camera 39 faces the region that the sheet laser that produced by laser generator 41 in retarder assembly 3 illuminates, and the camera lens of PIV high speed camera 39 and retarder assembly 3 leave the gap of the camera lens of avoiding wearing and tearing.
Described rotor 12 and stator 16 are made for transparent material;
Between the oil-in of described retarder assembly 3 and the oil-out of hydraulic control system 5, return line 6 is installed, between the oil-out of retarder assembly 3 and the oil return opening of hydraulic control system 5, in-line 4 is installed;
Described retarder assembly 3 comprises by bearing rotary and is installed on the rotor 12 in front support 9, adjust bolt 8 by flat key 18 and stator and be fixedly installed in the stator 16 in rear support 7, bolt 13 is adjusted in the sealing that forms the outer radial sealing of retarder assembly 3, adjustment ring 14 and airtight and watertight padding 15, ensure the O-ring seal 20 of retarder assembly 3 inner axial seals, ensure the rotor 12 of retarder assembly 3 and the sliding bearing 22 of stator 16 axial location, end cap 19 by bolted in rear support 7, in-line 4 is anchored on to the oil-feed clamp nut 17 on retarder assembly 3 oil-ins, return line 6 is anchored on to the oil return clamp nut 21 on retarder assembly 3 oil-outs.
The light that described laser generator 41 sends is the adjustable sheet laser of thickness, and is the continuously adjustable continuous light of power.
Described PIV high speed camera 39 is the PIV high speed camera that frame frequency is adjustable, the time shutter is adjustable, according to testing requirements, chooses different frame frequencies and time shutter.
Described hydraulic control system 5 is adjusted reversal valve 28, top hole pressure meter 29, rate of discharge meter 30, head pressure gage 31, inlet flow rate meter 32, ECU control module 33, liquid filled ratio display panel 34, heating radiator 35 and fuel tank 36 by filter cleaner 23, hydraulic pump 24, safety valve 25, working connection reversal valve 26, adjustable throttling 27, liquid filled ratio and is formed;
The lower end of described filter cleaner 23, safety valve 25 and heating radiator 35 is directly connected with fuel tank 36, and the upper end of filter cleaner 23 is connected with hydraulic pump 24 and working connection reversal valve 26 successively; And then be connected with in-line 4 entrances;
The upper end of described safety valve 25 is connected with working connection reversal valve 26, and then the lower end of adjusting reversal valve 28 with adjustable throttling 27 in parallel and liquid filled ratio is connected, the upper end that adjustable throttling 27 in parallel and liquid filled ratio are adjusted reversal valve 28 exports and is connected with return line 6;
Described head pressure gage 31 is connected on in-line 4 successively with inlet flow rate meter 32; Described top hole pressure meter 29 is connected on return line 6 successively with rate of discharge meter 30; Head pressure gage 31 and inlet flow rate meter 32 show respectively inlet pressure and the inlet flow rate of retarder assembly 3; Top hole pressure meter 29 and rate of discharge meter 30 show respectively top hole pressure and the rate of discharge of retarder assembly 3; Liquid filled ratio control panel 34 shows the liquid filled ratio q of retarder;
Described liquid filled ratio display panel 34, hydraulic pump 24, working connection reversal valve 26, liquid filled ratio are adjusted reversal valve 28, inlet flow rate meter 32 and rate of discharge meter 30 and are electrically connected with ECU control module 33 by connecting circuit.
Described ECU control module 33 is provided with the first button A, the second button B and the 3rd button C, and it is whether electric that the first button A controls obtaining of ECU control module 33, and electric as long as ECU control module 33 obtains, and hydraulic pump 24 is just in running order; Whether the work of the second button B control working connection reversal valve 26; Whether the work of the 3rd button C control liquid filled ratio adjustment reversal valve 28;
Described ECU control module 33 receives the volume signals of the fluid flowing through from inlet flow rate meter 32 and rate of discharge meter 30, in ECU control module 33, process, the liquid filled ratio control signal obtaining is outputed to liquid filled ratio control panel 34 and carry out the demonstration of liquid filled ratio q.
Adjust the adjusting knob 37 of adjustable throttling 27, make the chock pressure difference of adjustable throttling 27 equal the top hole pressure of retarder assembly 3 retarder assembly 3 under a certain liquid filled ratio q, retarder assembly 3 inlet flow rates equal oil return flow, retarder assembly 3 inner maintenance mobile equilibrium, i.e. controlling of the liquid filled ratio q of hydraulic control system 5 to retarder assembly 3.
Described filter cleaner 23 filters the fluid that will enter into hydraulic control system 5.
Described safety valve 25 is controlled the maximum system pressure of hydraulic control system 5.
Described adjustable throttling 27 and liquid filled ratio are adjusted the cooperating of reversal valve 28, make the inlet flow rate of retarder assembly 3 be greater than rate of discharge, and retarder assembly 3 is carried out to quick topping up.
The course of work of the present invention is as follows:
First open the master switch of variable frequency regulating speed control cabinet, test is set needs motor 1 rotating speed; The output shaft of motor 1 is by driving the rotor 12 of retarder assembly 3 to rotate through shaft coupling 2;
Press the first button A, ECU control module 33 obtains electric, and hydraulic pump 24 is worked; Hydraulic oil, from fuel tank 36, through filter cleaner 23 and hydraulic pump 24, arrives working connection reversal valve 26;
Press the second button B, the solenoid of working connection reversal valve 26 obtains electric working connection reversal valve 26 commutation works that make, and then hydraulic oil enters in retarder assembly 3 through in-line 4 and stator 16 oil-ins;
Press the 3rd button C, the coil that liquid filled ratio is adjusted reversal valve 28 obtains electric work, adjustable throttling 27 to retarder assembly 3 oil returns carry out throttle grverning, make retarder assembly 3 inlet flow rates be greater than rate of discharge, can realize the quick topping up of hydraulic control system 5 to retarder assembly 3;
Adjust the adjusting knob 37 of adjustable throttling 27, make the chock pressure difference of adjustable throttling 27 equal the top hole pressure of retarder assembly 3 retarder assembly 3 under a certain liquid filled ratio q, so now retarder assembly 3 inlet flow rates equal oil return flow, a mobile equilibrium of retarder assembly 3 inner maintenances, so just can realize the control of the liquid filled ratio q of hydraulic control system 5 to retarder assembly 3;
Open laser generator 41, the radial section position of trimmer light on retarder assembly 3;
Open PIV high speed camera 39, frame frequency and the time shutter of selected PIV high speed camera 39, press electronics trigger button, trigger PIV high speed camera 39 to gather picture; After picture collection finishes, close laser generator 41 and PIV high speed camera 39;
The first button A again, ECU control module 33 dead electricity, described hydraulic pump 24, working connection reversal valve 26 and liquid filled ratio adjustment reversal valve 28 all dead electricity do not worked, and hydraulic control system 5 is in unloading condition, and the fluid in retarder assembly 3 can be emitted fast;
Finally, close the master switch of variable frequency regulating speed control cabinet, motor 1 dead electricity stops operating.
Beneficial effect of the present invention is: proposed first the PIV test unit for testing retarder interior flow field, and can break through the retarder restriction of structure originally, realize the measurement to retarder rotor interior flow field, control system of the present invention can be measured pressure and the flow of the inlet and outlet of fuel channel of retarder in addition, and the real-time control of the liquid filled ratio q of realization to retarder, to meet the requirement of experiment to different liquid filled ratio q.
Brief description of the drawings
Fig. 1 is overall diagram of the present invention;
Fig. 2 is the structural representation of retarder assembly of the present invention;
Fig. 3 is hydraulic control system figure of the present invention;
In figure:
1. motor, 2. shaft coupling, 3. retarder assembly, 4. in-line, 5. hydraulic control system;
Return line, 7. rear support, 8. stator is adjusted bolt, 9. front support, 10. pedestal;
11. adjust backing plate, 12. rotors, 13. sealing adjustment bolts, 14. adjustment rings;
15. airtight and watertight paddings, 16. stators, 17. oil-feed clamp nuts, 18. flat keys, 19. end caps;
20. O-ring seals, 21. oil return clamp nuts, 22. sliding bearings, 23. filter cleaners, 24. hydraulic pumps;
25. safety valve, 26. working connection reversal valves, 27. adjustable throttlings, 28. liquid filled ratios are adjusted reversal valve;
29. top hole pressure meters, 30. rate of discharge meters, 31. head pressure gages, 32. inlet flow rate meters;
33.ECU control module, 34. liquid filled ratio display panels, 35. heating radiators, 36. fuel tanks;
37. adjustable knob, 38. magnet bases, 39.PIV high speed camera, 40. laser instruments support;
41. laser generators, A. the first button, B. the second button, C. the 3rd button.
Realization in Fig. 3 represents fluid pressure line, and dotted line represents connecting circuit.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Fig. 1 is the overall diagram of a kind of particle image velocimetry test unit for the test of retarder interior flow field of the present invention, visible its mainly comprises pedestal 10, be fixed on the motor 1 of pedestal 10 left ends by adjusting backing plate 11, be fixed on front support 9 and the rear support 7 at pedestal 10 middle parts, left end rotation is installed on front support 9, right-hand member and is fixedly installed in the retarder assembly 3 of rear support 7; Be arranged on the shaft coupling 2 between motor 1 output shaft and retarder assembly 3 left end input shafts; Be fixed on the hydraulic control system 5 of pedestal 10 right-hand members; Return line 6 is installed between the oil-out of the oil-in of retarder assembly 3 and hydraulic control system 5, between the oil-out of retarder assembly 3 and the oil return opening of hydraulic control system 5, in-line 4 is installed;
Also comprise laser generator 41 and PIV high speed camera 39, described laser generator 41 supports 40 radial positions that are fixed on retarder assembly 3 by laser instrument, PIV high speed camera 39 is fixed on pedestal 10 by magnet base 38, PIV high speed camera 39 faces the region that the sheet laser that produced by laser generator 41 in retarder assembly 3 illuminates, and the camera lens of PIV high speed camera 39 and retarder assembly 3 leave certain distance.
Adjust backing plate 11 and adjust as required its piece number and thickness to adjust the center of motor 1 high, ensure the right alignment of the input shaft of motor 1 and retarder assembly 3.
Referring to Fig. 2, visible described retarder assembly 3 comprises by bearing rotary and is installed on the rotor 12 in front support 9, adjust bolt 8 by flat key 18 and stator and be fixedly installed in the stator 16 in rear support 7, bolt 13 is adjusted in the sealing that forms the outer radial sealing of retarder assembly 3, adjustment ring 14 and airtight and watertight padding 15, ensure the O-ring seal 20 of retarder assembly 3 inner axial seals, ensure the rotor 12 of retarder assembly 3 and the sliding bearing 22 of stator 16 axial location, end cap 19 by bolted in rear support 7, in-line 4 is anchored on to the oil-feed clamp nut 17 on retarder assembly 3 oil-ins, return line 6 is anchored on to the oil return clamp nut 21 on retarder assembly 3 oil-outs,
Preferably, rotor 12 and stator 16 are made for transparent material, such as being made for transparent organic glass;
What described motor 1 adopted is frequency control, is completed by variable frequency regulating speed control cabinet;
It should be noted that the radial seal structure of retarder assembly 3, be only applicable to laboratory retarder interior flow field is tested the speed with retarder, be not useable for the retarder of practical application.
Described laser generator 41 is placed in the radial direction of retarder assembly 3, according to test needs, determines the axial location of laser generator 41; The light that laser generator 41 sends is sheet laser, and the thickness of sheet light is adjustable, and the thickness that the present invention tests used light is 1mm left and right; The light that laser generator 41 sends is continuous light, and power is continuously adjustable, to adapt to the light intensity demand under different exposure time.
Described PIV high speed camera 39 is the PIV high speed camera that frame frequency is adjustable, the time shutter is adjustable, according to testing requirements, chooses different frame frequencies and time shutter; The frame frequency here refers to the number of the picture that camera can take for a second, and frame frequency is larger, and the time interval of continuous two pictures is less; Time shutter refers to that light when the shutter of camera is opened enters the time of camera.
Fig. 3 is hydraulic control system figure of the present invention, and visible described hydraulic control system 5 is adjusted reversal valve 28, top hole pressure meter 29, rate of discharge meter 30, head pressure gage 31, inlet flow rate meter 32, ECU control module 33, liquid filled ratio display panel 34, heating radiator 35 and fuel tank 36 by filter cleaner 23, hydraulic pump 24, safety valve 25, working connection reversal valve 26, adjustable throttling 27, liquid filled ratio and formed;
Wherein, the lower end of described filter cleaner 23, safety valve 25 and heating radiator 35 is directly connected with fuel tank 36, and the upper end of filter cleaner 23 is connected with hydraulic pump 24 and working connection reversal valve 26 successively; And then be connected with in-line 4 entrances;
The upper end of described safety valve 25 is connected with working connection reversal valve 26, and then the lower end of adjusting reversal valve 28 with adjustable throttling 27 in parallel and liquid filled ratio is connected, the upper end that adjustable throttling 27 in parallel and liquid filled ratio are adjusted reversal valve 28 exports and is connected with return line 6;
Described head pressure gage 31 is connected on in-line 4 successively with inlet flow rate meter 32; Described top hole pressure meter 29 is connected on return line 6 successively with rate of discharge meter 30; Head pressure gage 31 and inlet flow rate meter 32 show respectively inlet pressure and the inlet flow rate of retarder assembly 3; Top hole pressure meter 29 and rate of discharge meter 30 show respectively top hole pressure and the rate of discharge of retarder assembly 3; Liquid filled ratio control panel 34 shows the liquid filled ratio q of retarder;
Described liquid filled ratio display panel 34, hydraulic pump 24, working connection reversal valve 26, liquid filled ratio are adjusted reversal valve 28, inlet flow rate meter 32 and rate of discharge meter 30 and are electrically connected with ECU control module 33 by connecting circuit;
Described ECU control module 33 is provided with the first button A, the second button B and the 3rd button C, and it is whether electric that the first button A controls obtaining of ECU control module 33, and electric as long as ECU control module 33 obtains, and hydraulic pump 24 is just in running order; Whether the work of the second button B control working connection reversal valve 26; Whether the work of the 3rd button C control liquid filled ratio adjustment reversal valve 28;
ECU control module 33 receives the volume signals of the fluid flowing through from inlet flow rate meter 32 and rate of discharge meter 30, in ECU control module 33, process, the liquid filled ratio control signal obtaining is outputed to liquid filled ratio control panel 34 and carry out the demonstration of liquid filled ratio q, the adjustment with handled easily personnel to liquid filled ratio q;
Adjust the adjusting knob 37 of adjustable throttling 27, make the chock pressure difference of adjustable throttling 27 equal the top hole pressure of retarder assembly 3 retarder assembly 3 under a certain liquid filled ratio q, so now retarder assembly 3 inlet flow rates equal oil return flow, a mobile equilibrium of retarder assembly 3 inner maintenances, so just can realize the control of the liquid filled ratio q of hydraulic control system 5 to retarder assembly 3;
Described filter cleaner 23 filters the fluid that will enter into hydraulic control system 5, makes the fluid of hydraulic control system 5 inside always in clean state;
Described safety valve 25 is controlled the maximum system pressure of hydraulic control system 5;
Retarder assembly 3 work can produce very large heat, and described heating radiator 35 heat producing of can timely retarder assembly 3 being worked sheds timely;
Described adjustable throttling 27 and liquid filled ratio are adjusted the cooperating of reversal valve 28, make the inlet flow rate of retarder assembly 3 be greater than rate of discharge, realize the quick topping up to retarder assembly 3.
The course of work of the present invention is as follows:
First open the master switch of variable frequency regulating speed control cabinet, test is set needs motor 1 rotating speed; The output shaft of motor 1 is by driving the rotor 12 of retarder assembly 3 to rotate through shaft coupling 2;
Press the first button A, ECU control module 33 obtains electric, and hydraulic pump 24 is worked; Hydraulic oil, from fuel tank 36, through filter cleaner 23 and hydraulic pump 24, arrives working connection reversal valve 26;
Press the second button B, the solenoid of working connection reversal valve 26 obtains electric working connection reversal valve 26 commutation works that make, and then hydraulic oil enters in retarder assembly 3 through in-line 4 and stator 16 oil-ins;
Press the 3rd button C, the coil that liquid filled ratio is adjusted reversal valve 28 obtains electric work, adjustable throttling 27 to retarder assembly 3 oil returns carry out throttle grverning, make retarder assembly 3 inlet flow rates be greater than rate of discharge, can realize the quick topping up of hydraulic control system 5 to retarder assembly 3;
Adjust the adjusting knob 37 of adjustable throttling 27, make the chock pressure difference of adjustable throttling 27 equal the top hole pressure of retarder assembly 3 retarder assembly 3 under a certain liquid filled ratio q, so now retarder assembly 3 inlet flow rates equal oil return flow, a mobile equilibrium of retarder assembly 3 inner maintenances, so just can realize the control of the liquid filled ratio q of hydraulic control system 5 to retarder assembly 3;
Open laser generator 41, the radial section position of trimmer light on retarder assembly 3;
Open PIV high speed camera 39, frame frequency and the time shutter of selected PIV high speed camera 39, press electronics trigger button, trigger PIV high speed camera 39 to gather picture; After picture collection finishes, close laser generator 41 and PIV high speed camera 39;
The first button A again, ECU control module 33 dead electricity, described hydraulic pump 24, working connection reversal valve 26 and liquid filled ratio adjustment reversal valve 28 all dead electricity do not worked, and hydraulic control system 5 is in unloading condition, and the fluid in retarder assembly 3 can be emitted fast;
Finally, close the master switch of variable frequency regulating speed control cabinet, motor 1 dead electricity stops operating.
Above-described embodiment is only for illustrating the present invention, and wherein structure, the connected mode etc. of each parts all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (10)
1. the particle image velocimetry test unit for the test of retarder interior flow field, comprise pedestal (10), be fixed on the motor (1) of pedestal (10) left end by adjusting backing plate (11), be fixed on front support (9) and the rear support (7) at pedestal (10) middle part, left end rotates the retarder assembly (3) that is installed on front support (9), right-hand member and is fixedly installed in rear support (7); Be arranged on the shaft coupling (2) between motor (1) output shaft and retarder assembly (3) left end input shaft; It is characterized in that:
Described rotor (12) and stator (16) are made for transparent material;
Also comprise the hydraulic control system (5) that is fixed on pedestal (10) right-hand member;
Between the oil-in of described retarder assembly (3) and the oil-out of hydraulic control system (5), return line (6) is installed, between the oil-out of retarder assembly (3) and the oil return opening of hydraulic control system (5), in-line (4) is installed;
Also comprise laser generator (41) and PIV high speed camera (39), described laser generator (41) is supported (40) and is fixed on the radial position of retarder assembly (3) by laser instrument, PIV high speed camera (39) is fixed on pedestal (10) by magnet base (38), PIV high speed camera (39) faces in retarder assembly (3) region that the sheet laser that produced by laser generator (41) illuminates, and the camera lens of PIV high speed camera (39) and retarder assembly (3) leave the gap of the camera lens of avoiding wearing and tearing.
2. a kind of particle image velocimetry test unit for the test of retarder interior flow field according to claim 1, is characterized in that:
Described retarder assembly (3) comprises by bearing rotary and is installed on the rotor (12) in front support (9), adjust bolt (8) by flat key (18) and stator and be fixedly installed in the stator (16) in rear support (7), bolt (13) is adjusted in the sealing that forms the outer radial sealing of retarder assembly (3), adjustment ring (14) and airtight and watertight padding (15), ensure the O-ring seal (20) of the inner axial seal of retarder assembly (3), ensure the rotor (12) of retarder assembly (3) and the sliding bearing (22) of stator (16) axial location, end cap (19) by bolted in rear support (7), in-line (4) is anchored on to the oil-feed clamp nut (17) on retarder assembly (3) oil-in, return line (6) is anchored on to the oil return clamp nut (21) on retarder assembly (3) oil-out.
3. a kind of particle image velocimetry test unit for the test of retarder interior flow field according to claim 1, is characterized in that:
The light that described laser generator (41) sends is the adjustable sheet laser of thickness, and is the continuously adjustable continuous light of power.
4. a kind of particle image velocimetry test unit for the test of retarder interior flow field according to claim 1, is characterized in that:
Described PIV high speed camera (39) is the PIV high speed camera that frame frequency is adjustable, the time shutter is adjustable, according to testing requirements, chooses different frame frequencies and time shutter.
5. a kind of particle image velocimetry test unit for the test of retarder interior flow field according to claim 1, is characterized in that:
Described hydraulic control system (5) is by filter cleaner (23), hydraulic pump (24), safety valve (25), working connection reversal valve (26), adjustable throttling (27), liquid filled ratio is adjusted reversal valve (28), top hole pressure meter (29), rate of discharge meter (30), head pressure gage (31), inlet flow rate meter (32), ECU control module (33), liquid filled ratio display panel (34), heating radiator (35) and fuel tank (36) composition,
The lower end of described filter cleaner (23), safety valve (25) and heating radiator (35) is directly connected with fuel tank (36), and the upper end of filter cleaner (23) is connected with hydraulic pump (24) and working connection reversal valve (26) successively; And then be connected with in-line (4) entrance;
The upper end of described safety valve (25) is connected with working connection reversal valve (26), and then the lower end of adjusting reversal valve (28) with adjustable throttling (27) in parallel and liquid filled ratio is connected, the upper end of adjustable throttling (27) in parallel and liquid filled ratio adjustment reversal valve (28) exports and is connected with return line (6);
Described head pressure gage (31) is connected on in-line (4) successively with inlet flow rate meter (32); Described top hole pressure meter (29) is connected on return line (6) successively with rate of discharge meter (30); Head pressure gage (31) and inlet flow rate meter (32) show respectively inlet pressure and the inlet flow rate of retarder assembly (3); Top hole pressure meter (29) and rate of discharge meter (30) show respectively top hole pressure and the rate of discharge of retarder assembly (3); Liquid filled ratio control panel (34) shows the liquid filled ratio q of retarder;
Described liquid filled ratio display panel (34), hydraulic pump (24), working connection reversal valve (26), liquid filled ratio are adjusted reversal valve (28), inlet flow rate meter (32) and rate of discharge meter (30) and are electrically connected with ECU control module (33) by connecting circuit.
6. a kind of particle image velocimetry test unit for the test of retarder interior flow field according to claim 5, is characterized in that:
Described ECU control module (33) is provided with the first button A, the second button B and the 3rd button C, it is whether electric that the first button A controls obtaining of ECU control module (33), and electric as long as ECU control module (33) obtains, hydraulic pump (24) is just in running order; Whether the work of the second button B control working connection reversal valve (26); Whether the work of the 3rd button C control liquid filled ratio adjustment reversal valve (28);
Described ECU control module (33) receives the volume signals of the fluid flowing through from inlet flow rate meter (32) and rate of discharge meter (30), in ECU control module (33), process, the liquid filled ratio control signal obtaining is outputed to liquid filled ratio control panel (34) and carry out the demonstration of liquid filled ratio q.
7. a kind of particle image velocimetry test unit for the test of retarder interior flow field according to claim 5, is characterized in that:
Adjust the adjusting knob (37) of adjustable throttling (27), make the chock pressure difference of adjustable throttling (27) equal the top hole pressure of retarder assembly (3) retarder assembly (3) under a certain liquid filled ratio q, retarder assembly (3) inlet flow rate equals oil return flow, the inner maintenance of retarder assembly (3) mobile equilibrium, i.e. controlling of the liquid filled ratio q of hydraulic control system (5) to retarder assembly (3).
8. a kind of particle image velocimetry test unit for the test of retarder interior flow field according to claim 5, is characterized in that:
Described filter cleaner (23) filters the fluid that will enter into hydraulic control system (5).
9. a kind of particle image velocimetry test unit for the test of retarder interior flow field according to claim 5, is characterized in that:
Described safety valve (25) is controlled the maximum system pressure of hydraulic control system (5).
10. a kind of particle image velocimetry test unit for the test of retarder interior flow field according to claim 5, is characterized in that:
Described adjustable throttling (27) and liquid filled ratio are adjusted the cooperating of reversal valve (28), make the inlet flow rate of retarder assembly (3) be greater than rate of discharge, and retarder assembly (3) is carried out to quick topping up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410351177.6A CN104133077B (en) | 2014-07-22 | A kind of particle image velocimetry assay device for the test of retarder interior flow field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410351177.6A CN104133077B (en) | 2014-07-22 | A kind of particle image velocimetry assay device for the test of retarder interior flow field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104133077A true CN104133077A (en) | 2014-11-05 |
| CN104133077B CN104133077B (en) | 2017-01-04 |
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| CN104359651A (en) * | 2014-12-03 | 2015-02-18 | 中国北方车辆研究所 | Visual testing method of variable filling factor dynamic behavior of hydraulic retarder |
| CN104458231A (en) * | 2014-12-03 | 2015-03-25 | 中国北方车辆研究所 | Hydraulic retarder fixed-filling-rate dynamic characteristic visualized testing method |
| CN107194123A (en) * | 2017-06-22 | 2017-09-22 | 北京理工大学 | Retarder braking ability emulation mode and device |
| CN107290130A (en) * | 2017-06-23 | 2017-10-24 | 吉林大学 | A kind of propeller blade External airflow field particle image velocimetry experimental rig |
| CN108661903A (en) * | 2018-05-17 | 2018-10-16 | 安徽工程大学 | A kind of inside engaged gear grease pump end clearance axial force balance system and method |
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| CN104458231B (en) * | 2014-12-03 | 2017-04-05 | 中国北方车辆研究所 | A kind of hydraulic retarder fixes liquid filled ratio dynamic characteristic Visualization method |
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| CN107194123B (en) * | 2017-06-22 | 2019-08-20 | 北京理工大学 | Retarder braking ability emulation mode and device |
| CN107290130A (en) * | 2017-06-23 | 2017-10-24 | 吉林大学 | A kind of propeller blade External airflow field particle image velocimetry experimental rig |
| CN108661903A (en) * | 2018-05-17 | 2018-10-16 | 安徽工程大学 | A kind of inside engaged gear grease pump end clearance axial force balance system and method |
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