CN103398051A - Steplessly-regulated sinusoidal high-frequency oscillation experiment device - Google Patents
Steplessly-regulated sinusoidal high-frequency oscillation experiment device Download PDFInfo
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- CN103398051A CN103398051A CN2013103037412A CN201310303741A CN103398051A CN 103398051 A CN103398051 A CN 103398051A CN 2013103037412 A CN2013103037412 A CN 2013103037412A CN 201310303741 A CN201310303741 A CN 201310303741A CN 103398051 A CN103398051 A CN 103398051A
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Abstract
The invention relates to a steplessly-regulated sinusoidal high-frequency oscillation experiment device comprising a front sealing shell, a rear sealing shell, a rotating disc, a rotating shaft, a motor, a back pressure supply component, an inlet component and an outlet component. One end of the rotating shaft is supported on the front sealing shell through bearings while the other end of the same penetrates the rear sealing shell to be connected with an output shaft of the motor, the rotating disc is fixed on the rotating shaft and located in a seal cavity, and a plurality of straight holes are uniformly distributed in the rotating disc along the circumferential direction. The back pressure supply component comprises a back pressure port, a back pressure adapter and a back pressure connector which are arranged on the front sealing shell, the inlet component comprises an inlet, a nozzle and an inlet connector which are arranged on the front sealing shell, the nozzle penetrates through the inlet, the other end of the nozzle is fixedly connected with the inlet connector, and the nozzle is in contact with the rotating disc in a motive seal manner. The experiment device can realize a sinusoidal oscillation liquid flowing environment, excited oscillation frequency is high, and the oscillation frequency can be steplessly regulated by accurately controlling the rotating speed of the motor through a PLC (programmable logic controller) program.
Description
Technical field
The present invention relates to a kind of sinusoid high frequency oscillation experimental setup of step-less adjustment, be applied to the Research on Dynamic Characteristic field of fluid machinery.
Background technique
Fluid machinery all uses in the unsteady state flowing environment, what the fluid machinery dynamic characteristic reflected is the ability of practical function under its real work environment, yet the examination of the function of a lot of fluid machinery model model machines be all do not have or minimum pressure oscillation state under carry out, be difficult to the dynamic characteristic of comprehensive assessment product.In fluid, the pressure oscillation of some characteristic frequency (being generally high frequency) amplifies oscillating quantity through fluid machinery effect meeting, engineering goods rotating component or supply line are produced vibrate and follow noise and then affect fluid machinery product working life, can directly cause fluid machinery destruction in the time of seriously.
The motive fluid pressure oscillation produces positive feedback and causes the fluid machinery failure phenomenon more common, but owing to lacking corresponding flowing environment, reproduce means, generally be difficult to carry out the research work of corresponding failure pattern diagnostic test, can only carry out to a certain degree structure optimization by means such as simulation calculation.
The sinusoid high frequency oscillation experimental setup of step-less adjustment can encourage the sinusoid high frequency fluid pressure oscillation of multi-frequency and intensity, and a kind of pressure pulsation flowing environment of high sinusoidal degree is provided for the research of fluid machinery dynamic characteristic experiment.
The content of invention
Technology of the present invention is dealt with problems and is: the sinusoid high frequency oscillation experimental setup that a kind of step-less adjustment is provided, this experimental setup can be realized the flow of fluid environment of sinusoidal oscillation, the oscillation frequency high (material object of design reaches 6000Hz) of excitation, oscillation frequency is accurately controlled the actuating motor rotating speed by the PLC program and is realized step-less adjustment.
Technical solution of the present invention is:
a kind of sinusoid high frequency oscillation experimental setup of step-less adjustment, its special way is: comprise front seal casinghousing 1, rear seal casinghousing 2, rotating disk 3, rotating shaft 13, motor, the back-pressure provisioning component, intake assembly and spout assembly, described front seal casinghousing 1 is fixedly connected with and forms Seal cage with rear seal casinghousing 2, one end of described rotating shaft 13 by bearings on front seal casinghousing 1, the other end of described rotating shaft passes rear seal casinghousing and is connected with the output shaft of motor, described rotating disk is fixed in rotating shaft 13 and is positioned at Seal cage, along the circumferential direction be evenly equipped with a plurality of straight holes on described rotating disk,
Described back-pressure provisioning component comprises back-pressure interface, back-pressure conversion adapter 7 and the back-pressure joint 10 that is arranged on front seal casinghousing 1, described back-pressure conversion adapter 7 is fixedly connected with front seal casinghousing 1 and runs through the back-pressure interface, and described back-pressure joint is fixedly connected with back-pressure conversion adapter 7;
Described spout assembly comprises and is arranged on the outlet on rear seal casinghousing 2 and is fixed on outlet connection 28 on rear seal casinghousing 2, and described outlet connection is communicated with outlet;
Described intake assembly comprises entrance, nozzle and the inlet attack that is arranged on front seal casinghousing 1, and described nozzle runs through entrance, and an end is positioned at Seal cage, and the other end is fixedly connected with inlet attack;
Described nozzle comprises nozzle body and the shower nozzle that is positioned at nozzle body, and the orifice center of shower nozzle is positioned on the straight hole central distribution circle of rotating disk, and described shower nozzle contacts with the rotating disk motive sealing.
The injection diameter of above-mentioned shower nozzle is identical with the straight hole diameter of rotating disk, and the distance at adjacent straight hole center is the twice of straight hole diameter.
The straight hole diameter of above-mentioned rotating disk is 1-3mm.
The material of above-mentioned rotating disk and shower nozzle is high-hardness metal material, and high hardness refers to HRC 〉=40, described rotating disk and/or shower nozzle contact end face deposition solid lubrication coating.
Above-mentioned rotating disk straight hole is flaring structure at outlet end, and flaring angle is 30 °-60 °.
The planimetric area that above-mentioned shower nozzle is positioned at nozzle body one end contacts an end with rotating disk with shower nozzle planimetric area ratio is 3-5.
Above-mentioned spout assembly is positioned at the lowest part of rear seal casinghousing.
Above-mentioned motor is actuating motor.
Above-mentioned solid lubrication coating is DLC carbon back coating DLC, class graphite carbon based coating GLC, TiN coating or Cr N coating.
Above-mentioned high-hardness metal material is 2Cr13,7Cr17 or 9Cr18.
Advantage of the present invention is:
1, flow is high sinusoidal degree variation through the minimum flow area of experimental setup of the present invention, and the hydrodynamic pressure that encourages vibration also is high sinusoidal degree variation and stepless adjustable thereupon.
2, suppose that n is that motor speed (rpm of unit), m are along the circumferential direction uniform straight hole number of rotating disk, the fluid oscillating frequency of utilizing so experimental setup of the present invention to produce is
Can draw thus oscillation frequency and improve (generally can reach and be not less than 6000Hz) along with the increase of straight hole number and motor speed.
3, but motor is subjected to the rotating speed step-less adjustment that the PLC program control produces, basis so
But the fluid oscillating frequency that experimental setup of the present invention produces is step-less adjustment also.
Description of drawings
Fig. 1 is step-less adjustment sinusoid high frequency oscillation experimental setup sectional drawing of the present invention;
Fig. 2 is step-less adjustment sinusoid high frequency oscillation experimental setup application system figure of the present invention;
Fig. 3 is turntable structure figure of the present invention;
Fig. 4 is the side view of Fig. 3;
Fig. 5 is A place enlarged view;
Fig. 6 is the structural representation of intake assembly.
Embodiment
As shown in Figure 1 and Figure 2, the present invention is mainly by comprising that front seal casinghousing 1, rear seal casinghousing 2, rotating disk 3, rotating shaft 13, motor, back-pressure provisioning component, intake assembly and spout assembly form.Place sealing gasket 24 between front seal casinghousing 1 and rear seal casinghousing 2 and be bolted, making between two housings and form Seal cage.Front bearing retainer 11 is fixed and seals with front seal casinghousing 1 by bolt and gasket seal 22; Rear bearing cover 12 is fixed and seals by bolt and gasket seal 12, seal ring 6 and rear seal casinghousing 2; Rotating shaft 13 is positioned at Seal cage and by ball bearing 25, ball bearing 16 and thrust-bearing 17, is supported on front seal casinghousing 1 and rear seal casinghousing 2, one end of rotating shaft 13 is positioned at front bearing retainer 11, and the other end stretches out rear bearing cover 12 and with motor 23, by coupling 27, is connected.General motor is selected actuating motor, the rotation speed change process of actuating motor is controlled by the PLC controller 26 of prior programmed, and the rotational speed regulation precision of actuating motor carries the output control signal precision of hardware by PLC control program 26 and the control sensitivity of actuating motor self determines.
The back-pressure provisioning component comprises back-pressure interface, back-pressure conversion adapter 7 and the back-pressure joint 10 that is arranged on front seal casinghousing 1, and back-pressure conversion adapter 7 is fixedly connected with front seal casinghousing 1 and runs through the back-pressure interface, and the back-pressure joint is fixedly connected with back-pressure conversion adapter 7; Spout assembly comprises and is arranged on the outlet on rear seal casinghousing 2 and is fixed on outlet connection 28 on rear seal casinghousing 2, and outlet connection is communicated with outlet; Intake assembly comprises entrance, nozzle and the inlet attack that is arranged on front seal casinghousing 1, and nozzle runs through entrance, and an end is positioned at Seal cage, and the other end is fixedly connected with inlet attack;
As shown in Fig. 3,4,5, rotating disk 3 is fixed in rotating shaft 13, and the fixing and transmission by positioning step, gland nut 14 and the key 15 of rotating shaft 13, and rotating disk 3 is along the circumferential direction arranged some straight holes.
As shown in Figure 6, nozzle comprises nozzle body and the shower nozzle that is positioned at nozzle body, and the orifice center of shower nozzle is positioned on the straight hole central distribution circle of rotating disk, and shower nozzle contacts with the rotating disk motive sealing.The self-adapting seal nozzle is comprised of nozzle body 8, nozzle body conversion adapter 18, shower nozzle 5, seal ring 21 and sealing gasket (19,20).Adaptive nozzle is fixed with front seal casinghousing 1 by screw thread and sealing gasket 19; 18 of nozzle body 8 and nozzle body conversion adapters are fixed by sealing gasket 20; Shower nozzle 5 is positioned at nozzle body, by seal ring 21, guarantees the contact end face seal and can move vertically.Shower nozzle 5 has designed four road sealing grooves, can determine the layout quantity of seal ring 21 according to actual sealing effect, and it contacts end face and deposits equally graphite-like film solid lubrication coating (GLC) 4 with rotating disk, makes both reliable sealings and lubricated good.The adaptive nozzle axial direction passes the distribution circle that the some straight holes of rotating disk 3 center of circle forms, and rotating disk 3 under the drive of servomotor 23, can make the circulation area cycle of fluid change.Sealing load between self-adapting seal nozzle and rotating disk 3 is realized self adaption in pressure, the hydrodynamic pressure of shower nozzle 5 front ends at the Area Ratio of shower nozzle 5 front end active areas and sealing area certainly by fluid.
In order to realize the legal sinusoidal curve of the fluid that encourages dither waveform, the injection diameter of shower nozzle is identical with the straight hole diameter of rotating disk, and the distance at adjacent straight hole center is the twice of straight hole diameter.The straight hole diameter of general rotating disk is set to 1-3mm.
For the effective sealing between the shower nozzle of realizing rotating disk and adaptive nozzle, and can greatly reduce surface friction drag between rotating disk and shower nozzle.The material of rotating disk and shower nozzle is high-hardness metal material, and high hardness refers to HRC 〉=40, and the vertical plane of rotating disk and/or shower nozzle contact jaw is along certain circumference range deposition graphite-like film solid lubrication coating deposition solid lubrication coating 4.The zone that solid lubrication coating 4 range of deposition want ensuring coverage to contact with the shower nozzle 5 of self-adapting seal nozzle.Wherein solid lubrication coating is DLC carbon back coating DLC, class graphite carbon based coating GLC, TiN coating or Cr N coating; Wherein high-hardness metal material is 2Cr13,7Cr17 or 9Cr18.
In order to improve the anti-cavitation characteristic of experimental setup, the strengthening fluid vibration: the rotating disk straight hole is flaring structure at outlet end, and flaring angle is 30 °-60 °.
In order to realize that by fluid pressure action planimetric area that the self adaption of seal pressure, shower nozzle are positioned at nozzle body one end contacts an end with rotating disk with shower nozzle planimetric area ratio is 3-5.The shower nozzle of self-adapting seal nozzle along the upstream extremity of fluid motion direction and downstream at the 3-5 of projected area ratio of Vertical direction that flows.
In order to realize without hydrops, spout assembly is positioned at the lowest part of rear seal casinghousing.
Working principle of the present invention:
Rotating disk along the circumferential direction is uniformly distributed some straight holes, and rotating shaft drives turntable rotation under the driving of servomotor, and between scalable shower nozzle and rotating disk, motive sealing contacts, and the pressure by fluid makes between rotating disk and self-adapting seal nozzle realizes sealing.In rotating disk High Rotation Speed process, the runner between the spray orifice of rotating disk straight hole and self-adapting seal nozzle is the sinusoid cyclically-varying, and motive fluid produces the sinusoid high frequency oscillation.
The fluid that sealed-in nozzles enters the high frequency oscillation experimental setup of step-less adjustment is the bypass of accommodating fluid in experiment, and the adaptive nozzle front end arranges modulating valve; The modulating valve front end is arranged a threeway, and fluid main road after distributing T-pipe enters in the fluid machinery of experiment.Enter the fluid of high frequency oscillation experimental setup of step-less adjustment after rotating disk 3 disturbances, along welded joint 28, modulating valve, discharge.
Back-pressure supply interface is set on front seal casinghousing 1, by welding straight coupling 10 and back-pressure interface switching 7, is formed.Compressed gas Jing Ci road enters in Seal cage, realizes that the pressure in Seal cage is regulated.The amplitude of activation pressure vibration is by the modulating valve co-controlling of this Seal cage pressure and adaptive nozzle front end.
Claims (10)
1. the sinusoid high frequency oscillation experimental setup of a step-less adjustment, it is characterized in that: comprise front seal casinghousing (1), rear seal casinghousing (2), rotating disk (3), rotating shaft (13), motor, the back-pressure provisioning component, intake assembly and spout assembly, described front seal casinghousing (1) is fixedly connected with and forms Seal cage with rear seal casinghousing (2), one end of described rotating shaft (13) by bearings on front seal casinghousing (1), the other end of described rotating shaft passes rear seal casinghousing and is connected with the output shaft of motor, described rotating disk is fixed on rotating shaft (13) upward and is positioned at Seal cage, along the circumferential direction be evenly equipped with a plurality of straight holes on described rotating disk,
Described back-pressure provisioning component comprises back-pressure interface, back-pressure conversion adapter (7) and the back-pressure joint (10) that is arranged on front seal casinghousing (1), described back-pressure conversion adapter (7) is fixedly connected with front seal casinghousing (1) and runs through the back-pressure interface, and described back-pressure joint is fixedly connected with back-pressure conversion adapter (7);
Described spout assembly comprises and is arranged on the outlet on rear seal casinghousing (2) and is fixed on outlet connection (28) on rear seal casinghousing (2), and described outlet connection is communicated with outlet;
Described intake assembly comprises entrance, nozzle and the inlet attack that is arranged on front seal casinghousing (1), and described nozzle runs through entrance, and an end is positioned at Seal cage, and the other end is fixedly connected with inlet attack;
Described nozzle comprises nozzle body and the shower nozzle that is positioned at nozzle body, and the orifice center of shower nozzle is positioned on the straight hole central distribution circle of rotating disk, and described shower nozzle contacts with the rotating disk motive sealing.
2. the sinusoid high frequency oscillation experimental setup of step-less adjustment according to claim 1, it is characterized in that: the injection diameter of described shower nozzle is identical with the straight hole diameter of rotating disk, and the distance at adjacent straight hole center is the twice of straight hole diameter.
3. the sinusoid high frequency oscillation experimental setup of step-less adjustment according to claim 2, it is characterized in that: the straight hole diameter of described rotating disk is 1-3mm.
4. the sinusoid high frequency oscillation experimental setup of according to claim 1 and 2 or 3 described step-less adjustment, it is characterized in that: the material of described rotating disk and shower nozzle is high-hardness metal material, high hardness refers to HRC 〉=40, described rotating disk and/or shower nozzle contact end face deposition solid lubrication coating.
5. the sinusoid high frequency oscillation experimental setup of step-less adjustment according to claim 4, it is characterized in that: described rotating disk straight hole is flaring structure at outlet end, flaring angle is 30 °-60 °.
6. the sinusoid high frequency oscillation experimental setup of step-less adjustment according to claim 5 is characterized in that: the planimetric area that described shower nozzle is positioned at nozzle body one end contacts an end with rotating disk with shower nozzle planimetric area ratio is 3-5.
7. the sinusoid high frequency oscillation experimental setup of step-less adjustment according to claim 6, it is characterized in that: described spout assembly is positioned at the lowest part of rear seal casinghousing.
8. the sinusoid high frequency oscillation experimental setup of step-less adjustment according to claim 7, it is characterized in that: described motor is actuating motor.
9. the sinusoid high frequency oscillation experimental setup of step-less adjustment according to claim 8, it is characterized in that: described solid lubrication coating is DLC carbon back coating DLC, class graphite carbon based coating GLC, TiN coating or Cr N coating.
10. the sinusoid high frequency oscillation experimental setup of step-less adjustment according to claim 9, it is characterized in that: described high-hardness metal material is 2Cr13,7Cr17 or 9Cr18.
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| CN201310303741.2A CN103398051B (en) | 2013-07-15 | 2013-07-15 | A kind of sinusoid high frequency oscillation experimental setup of step-less adjustment |
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| CN201310303741.2A CN103398051B (en) | 2013-07-15 | 2013-07-15 | A kind of sinusoid high frequency oscillation experimental setup of step-less adjustment |
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| CN103398051B CN103398051B (en) | 2016-01-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630314A (en) * | 2013-11-25 | 2014-03-12 | 苏州东菱振动试验仪器有限公司 | Blade high on-line air flow excitation system and test method |
| CN104330210A (en) * | 2014-10-30 | 2015-02-04 | 北京航天计量测试技术研究所 | Square wave pressure generator in porous turning wheel structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1670196A1 (en) * | 1989-03-31 | 1991-08-15 | Московский авиационный институт им.Серго Орджоникидзе | Method for generation of nonlinear vibrations and hydromechanical pulsator |
| CN2451916Y (en) * | 2000-08-28 | 2001-10-03 | 宝山钢铁股份有限公司 | Rotary pulsating airflow generator |
| CN101726392A (en) * | 2008-10-16 | 2010-06-09 | 北京航天计量测试技术研究所 | Sinusoid pressure generator with inlet-outlet bidirectional modulation |
| CN102410288A (en) * | 2011-08-30 | 2012-04-11 | 北京航空航天大学 | Wheel-disc-type flow pulsation generator |
| CN102966643A (en) * | 2012-11-22 | 2013-03-13 | 裕东（中山）机械工程有限公司 | Mechanical rotary type pulse gas generator |
-
2013
- 2013-07-15 CN CN201310303741.2A patent/CN103398051B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1670196A1 (en) * | 1989-03-31 | 1991-08-15 | Московский авиационный институт им.Серго Орджоникидзе | Method for generation of nonlinear vibrations and hydromechanical pulsator |
| CN2451916Y (en) * | 2000-08-28 | 2001-10-03 | 宝山钢铁股份有限公司 | Rotary pulsating airflow generator |
| CN101726392A (en) * | 2008-10-16 | 2010-06-09 | 北京航天计量测试技术研究所 | Sinusoid pressure generator with inlet-outlet bidirectional modulation |
| CN102410288A (en) * | 2011-08-30 | 2012-04-11 | 北京航空航天大学 | Wheel-disc-type flow pulsation generator |
| CN102966643A (en) * | 2012-11-22 | 2013-03-13 | 裕东（中山）机械工程有限公司 | Mechanical rotary type pulse gas generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630314A (en) * | 2013-11-25 | 2014-03-12 | 苏州东菱振动试验仪器有限公司 | Blade high on-line air flow excitation system and test method |
| CN104330210A (en) * | 2014-10-30 | 2015-02-04 | 北京航天计量测试技术研究所 | Square wave pressure generator in porous turning wheel structure |
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