CN101403406A - Plunger type flow pulsation generator - Google Patents
Plunger type flow pulsation generator Download PDFInfo
- Publication number
- CN101403406A CN101403406A CNA200810232217XA CN200810232217A CN101403406A CN 101403406 A CN101403406 A CN 101403406A CN A200810232217X A CNA200810232217X A CN A200810232217XA CN 200810232217 A CN200810232217 A CN 200810232217A CN 101403406 A CN101403406 A CN 101403406A
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- plunger
- pedestal
- flow
- cylinder barrel
- guide rail
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Abstract
The invention discloses a plunger-typed flow flutter generator, which comprises a rotary table provided with a positioning hole, a propeller shaft, a promoting linear guideway group, a guidance linear guideway group, a plunger, a cylinder, a sealing end cover, a motor, a speed reducer, a frequency converter and the like. The motor drives the rotary table to rotate; the propeller shaft which is fixed on the rotary table and the promoting linear guideway group convert a circular motion into a reciprocating linear simple harmonic motion of the plunger in the cylinder. A plunger cylinder is connected into a flow pipeline by a tee joint; a certain amount of main pipeline fluid is absorbed in or extruded out of the cylinder; and a sine flutter is superimposed on the main flow. The frequency converter changes the rotating speed of a stepping motor and can regulate the period of the flutter. The rotating radius of the propeller shaft which is fixed on the rotary table is regulated so as to change the stroke of the plunger; in addition, plunger suites with different diameters can be replaced; the combination of the two types can change the pumping capacity of the plunger cylinder, thus obtaining the flutter with different amplitudes. The plunger-typed flow flutter generator can generate standard sine flow output with different flutter amplitudes and continuously changing periods.
Description
Technical field
The present invention relates to flow control field in the pipeline, particularly in pipeline, produce the plunger type flow pulsation generator of amplitude and cycle can regulate pulsating flow.
Background technique
Have a large amount of two-phase flow unstability phenomenons in nuclear reactor and boiler power plant, one of phenomenon of flow instability is exactly flow pulsation.In addition, human heart shrinks and also can produce the rhythmical fluctuating of blood flow in the arteries.Simulate cardiac pumping in influence that is brought for two-phase flow unstability in the analytical industry and the medical research, must in experimental channel, produce pulsating flow.Conventional flow pulsation production method generally is to add an auxilliary pump by Frequency Converter Control behind the pipeline main pump.Under the situation of main pump invariablenes turning speed, utilize frequency variator to change auxilliary revolution speed, thereby on main flow, superposeed pulsating flow.Experiment and the operation easily of this kind pulsation production method: but the flow pulsation amplitude that obtains is limited, generally is no more than 30% of mean flowrate; Pulsation curves is rule inadequately; The pulsation amplitude is malleable not; Pulsation period also is subjected to auxilliary revolution speed variable effect except that being subjected to Frequency Converter Control, can not produce dither; And have a significant impact assisting the pump operation life-span.
U.S. Pat 4512514 and US4267856 have described two kinds of passive type flow pulsation generating means.Under fixed flow rate, the pulsation amplitude and the frequency of two kinds of flow pulsation generating means generations all can't be regulated.
Japan Patent 2002-257032 has described a kind of direct current generator driven plunger formula pulse pump.The front end of piston bore is connected with in-and-out pipe by terminal valve respectively, and the eccentric wheel driven plunger moves reciprocatingly in piston cylinder, produces intermittently pulsating flow.The frequency of pulsation can be regulated by changing motor speed.But piston bore diameter and piston stroke are fixed, and the amplitude of therefore pulsing is fixed.In addition, because in-and-out pipe is controlled by the turnover valve respectively, when sucking fluid, outlet valve can be closed, and the downstream does not have flow.What therefore, this pulse pump produced is the batch-type TRANSFER BY PULSATING FLOW.
Summary of the invention
The objective of the invention is to overcome above-mentioned prior art deficiency, a kind of can regulate pulsation amplitude and the plunger type flow pulsation generator of pulsation period are provided, this generator makes the sinusoidal curve of instantaneous flow curve for fluctuating in the pipeline, and the amplitude of flow pulsation and cycle can be regulated easily, thus flowed fluctuation in the pipeline of obtain pulsing amplitude and controlling cycle.
The present invention utilizes bearing and slide block to combine cardan shaft is driven the past complex line simple harmonic motion of plunger in cylinder barrel with rotation, the guide rail that slides up and down and advance of propelling slide block on the propelling guide rail that the circular movement of dial rotation is decomposed into bearing; The cylinder barrel outlet is inserted flow duct, utilize the past complex line simple harmonic motion of plunger in cylinder barrel fluid to be sucked or the discharge cylinder barrel, pulsation of stack on the pipeline main flow; Change the cycle that motor speed is regulated flow pulsation by frequency variator; Change the fixation radius of cardan shaft on rotating disk, change the stroke of plunger with this, or change the cylinder assembly of different plunger diameter, thereby change each fixedly interior aspiration (equaling total discharge capacity) of pulsation period inner cylinder tube, the amplitude of pulsing changes.
For achieving the above object, the present invention has adopted following technological scheme:
The present invention's linear rail that leads is fixed on the pedestal sidewall, on two guiding linear rails guide runner is set respectively, advance guide rail base and guide runner to be fixed together, advance guide rail base front end and plunger end to be connected, the plunger front end connects cylinder barrel and end cover, cylinder barrel and end cover are fixed on the pedestal front end wall, advance linear rail to be fixed on the guide rail basal plane that advances guide rail base, advance the propelling slide block on the linear rail to be connected with the slide block pedestal that has bearing groove, cardan shaft one end is connected with the slide block pedestal by the bearing in the bearing groove, the other end is connected in the positioning hole on the rotating disk different radii, rotating disk is connected on the handle that has axle sleeve, is connected the axle sleeve of handle by motor-driven reducer output shaft.
Positioning hole is the hexagonal hole that is distributed in the circumferential different radii of rotating disk place, and the end that cardan shaft is connected with rotating disk is the hexagonal prism of same size, and cardan shaft is fixed on the positioning hole place that different rotating disks directly make progress, and produces different plunger strokes.
The cylinder barrel end cap adopts this special envelope sealed plunger, and cylinder barrel end cap and cylinder barrel are by being bolted to the pedestal front end, and the end of plunger adopts screw thread to be connected with the upright guide rail pedestal.
The present invention constantly sucks the main pipe inner fluid and discharge cylinder barrel by the past complex line simple harmonic motion of plunger in cylinder barrel, and a sinuous pulsation flow has superposeed on average main flow.The cycle of this sinuous pulsation and amplitude can be regulated by accurate frequency and the volume that changes suction of active, thereby can obtain the sinusoidal flowed fluctuation of the different pulsation periods under each average main flow and the amplitude of pulsing.
Description of drawings
Fig. 1 (a) is the axonometric drawing that waits of flow pulsation generator of the present invention;
Fig. 1 (b) is the front view of flow pulsation generator, does not wherein comprise retarder and motor;
Fig. 1 (c) is the left view of flow pulsation generator, does not wherein comprise retarder and motor;
Fig. 1 (d) is the plan view of flow pulsation generator, does not wherein comprise retarder and motor;
Fig. 2 is plunger case assembled figure;
Fig. 3 is the axonometric drawing of each guide assembly assembling;
Fig. 4 is a flow pulsation generator speed decomposing schematic representation;
Below in conjunction with accompanying drawing content of the present invention is described in further detail.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Shown in Fig. 1 (a), Fig. 1 (b), Fig. 1 (c) and Fig. 1 (d), guiding linear rail 7,14 is fixed on pedestal 1 sidewall.Advance guide rail base 9 to be fixed together by the guide runner 8,13 on screw and the guiding linear rail 7,14.Advance guide rail base 9 front ends and 4 terminal connections of plunger.Cylinder barrel 2 that plunger 4 front ends are supporting and end cover 3 are fixed on pedestal 1 front end.Advance linear rail 10 to be fixed on the guide rail basal plane that advances guide rail base 9.Advance the propelling slide block 11 on the linear rail 10 to be connected with the slide block pedestal 12 that has bearing groove.Cardan shaft 15 1 ends are connected with cardan shaft 15 by the bearing 19 in the bearing groove, in the positioning hole 17 on the other end insertion rotating disk 16 different radiis, and are fixed on the rotating disk 16 by nut.Rotating disk 16 is connected on the handle 18 that has axle sleeve by screw and location pin.Retarder 5 output shafts that driven by motor 6 connect the axle sleeve of handle 18, drive rotating disk 16 rotations.
With reference to shown in Figure 2, cylinder barrel 2 is for having the stainless steel cylinder of flange, and cylinder barrel 2 front ends are outlet pipe section.Cylinder barrel 2 rear ends are fixed on pedestal 1 front end by screw with cylinder barrel 2 and end cover 3 after inserting end cover 3, are sealed by O RunddichtringO 20 between both flanges.End cover 3 is a flange arrangement with holes.Arrange successively in plunger 4 pilot holes of end cover 3 that lattice enclose 21, this special envelope 22 and 23 pairs of plungers 4 of dust ring lead, seal and prevent dust.The movable end of plunger 4 in cylinder barrel 2 is the plunger rod that is complementary with cylinder barrel 2.The other end is a bolt arrangement 24, is connected with upright guide rail pedestal 9 prepared screw-bolt holes.A whole set of plunger case assembly can take off from pedestal 1 easily, overhauls or change the cylinder assembly in different plunger rods footpath.
With reference to shown in Figure 3, advancing linear rail 10 and advancing slide block 11, guiding linear rail 7,14 and top slide block 8,13 thereof is standard four row pearl self-lubricating type linear slide rail assemblies.Under guide rail basal plane orientation tension pressure condition, what slide block can be along linear rail axially does straight line motion.Guiding linear rail 7,14 is fixed on pedestal 1 sidewall horizontal direction, and the horizontal motion of upright guide rail pedestal 9 and plunger 4 is led.Advance guide rail base 9 sides respectively to have a slide block to connect basal plane up and down, will advance guide rail base 9 to be connected on the slide block 8,13 of guiding linear rail 7,14 by screw.Advance guide rail base 9 positive, advance linear rail 10 advancing on guide rail base 9 basal planes by screw for advancing the fixed base of linear rail 10.Advancing guide rail base 9 opposite sides is the bolt hole that is complementary with plunger 4 terminal stud 24, is connected with plunger 4.Advance the propelling slide block 11 on the guide rail 10 to connect the slide block pedestal 12 that has bearing groove.Cardan shaft 15 1 ends are bearing rod, the stage casing be with rotating disk 16 on the hexagonal prism that is complementary of six side's positioning holes 17, end is a bolt shank.The bearing rod section of cardan shaft 15 is connected on the slide block pedestal 12 by bearing 19.
The concrete assembling of rotating disk and handle is with reference to shown in Fig. 1 (b): rotating disk 16 is for having the disk of positioning hole 17.The hexagon ring that positioning hole 17 and cardan shaft 15 hexagonal prisms are complementary is along circumferentially being distributed in rotating disk 16 different radii places.After the cardan shaft 15 that links to each other with slide block pedestal 12 inserts the positioning hole 17 of a certain radius, be fixed on the rotating disk 16, move in a circle with rotating disk 16 by nut.Handle 18 has the U shaped steel plate that mates axle sleeve with retarder 5 output shafts for the center.Handle 18 two ends are fixed to rotating disk 16 outermost screws and pinhole place, location by screw and location pin.
Specifically describe the operation of flutter generator with reference to Fig. 1 (a): the output shaft of the retarder 5 that is driven by motor 6 connects the axle sleeve of handle 18, drives rotating disks 16 rotations by handle 18.Cardan shaft 15 can move in a circle on each positioning hole 17 radius with rotating disk 16.Bearing 19 and slide block 11 are advancing the guide rail 10 that slides up and down and advance on the guide rail 10 to drive the past complex line simple harmonic motion of plungers 4 rotation, the propelling slide block 11 that the circular movement of cardan shaft 15 is decomposed into bearing 19.
The motion of plunger 4 can be analyzed with reference to Fig. 4 speed decomposing schematic representation: the radius that advances slide block 11 to do uniform circular motion with cardan shaft 15 is the radius r at positioning hole 17 places on the rotating disk 16, and the frequency of rotation is that motor 6 drives the frequency f that rotating disk 16 rotates by retarder 5
oWhen advancing slide block 11 on advancing guide rail 10, to slide up and down, drive propelling guide rail 10 and do straight reciprocating motion in the horizontal direction.This horizontal reciprocating movement is and advances the decomposition in the horizontal direction of slide block 11 uniform circular motion, its horizontal instantaneous velocity u
1=2 π rfsin (2 π ft) are the sinusoidal curve of standard.Therefore the plunger 4 that advances guide rail 10 front ends to connect aspirate the flow pulsation curve of pushing liquid formation cylinder barrel 2 outlet ports in cylinder barrel 2 also be the sinusoidal curve of a standard.The cycle of flow pulsation is determined by motor 6 rotating speeds.The amplitude of pulsation can be by changing cardan shaft 15 location radii change plunger 4 strokes or changing different bars plunger case external member directly and regulate.16 of cardan shaft 15 and rotating disks, slide block pedestal 12 all is that bolt is connected with advancing 11 of slide blocks, can be for convenience detach, with the radius of adjusting cardan shaft 15 on rotating disk 16, thus the stroke of pilot plunger 4 in cylinder barrel 2.
This flow pulsation generator is in parallel with main pipe check valve downstream pipeline by tee union.Constantly the main pipe inner fluid is sucked and discharge cylinder barrel 2 by the past complex line simple harmonic motion of plunger 4 in cylinder barrel 2, thereby the pulsation of a sine of stack on the mean flowrate of main line check valve downstream forms fixing TRANSFER BY PULSATING FLOW of pulsation amplitude and cycle.The amplitude of pulsation can be regulated by changing the stroke of plunger 4 in cylinder barrel 2 easily, and the cycle of pulsation can change motor speed by frequency variator and regulate.
Claims (3)
1. plunger type flow pulsation generator, comprise pedestal (1), it is characterized in that, guiding linear rail (7,14) be fixed on pedestal (1) sidewall, guiding linear rail (7, guide runner (8 is set respectively 14), 13), advance guide rail base (9) and guide runner (8,13) be fixed together, advance guide rail base (9) front end and plunger (4) end to be connected, plunger (4) front end connects cylinder barrel (2) and end cover (3), cylinder barrel (2) and end cover (3) are fixed on pedestal (1) the front end wall, advance linear rail (10) to be fixed on the guide rail basal plane that advances guide rail base (9), advance the propelling slide block (11) on the linear rail (10) to be connected with the slide block pedestal (12) that has bearing groove, cardan shaft (15) one ends are connected with slide block pedestal (12) by the bearing (19) in the bearing groove, the other end is connected in the positioning hole (17) on rotating disk (16) different radii, rotating disk (16) is connected on the handle (18) that has axle sleeve, is connected the axle sleeve of handle (18) by retarder (5) output shaft of motor (6) driving.
2. plunger type flow pulsation generator according to claim 1, it is characterized in that, positioning hole (17) is for being distributed in the hexagonal hole at the circumferential different radii of rotating disk place, the end that cardan shaft (15) is connected with rotating disk (16) is the hexagonal prism of same size, cardan shaft (15) is fixed on the positioning hole (17) that different rotating disks (16) footpaths makes progress and locates, and produces different plunger strokes.
3. plunger type flow pulsation generator according to claim 1, it is characterized in that: cylinder barrel end cap (3) adopts this special envelope (22) sealed plunger (4), cylinder barrel end cap and cylinder barrel are by being bolted to the pedestal front end, and the end of plunger (4) adopts screw thread to be connected with the upright guide rail pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810232217XA CN101403406B (en) | 2008-11-11 | 2008-11-11 | Plunger type flow pulsation generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810232217XA CN101403406B (en) | 2008-11-11 | 2008-11-11 | Plunger type flow pulsation generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101403406A true CN101403406A (en) | 2009-04-08 |
| CN101403406B CN101403406B (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810232217XA Expired - Fee Related CN101403406B (en) | 2008-11-11 | 2008-11-11 | Plunger type flow pulsation generator |
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| CN (1) | CN101403406B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410288A (en) * | 2011-08-30 | 2012-04-11 | 北京航空航天大学 | Wheel-disc-type flow pulsation generator |
| CN102679799A (en) * | 2012-05-11 | 2012-09-19 | 武汉工程大学 | Plug type pulsating flow generator |
| CN103071217A (en) * | 2013-02-07 | 2013-05-01 | 天津市医疗器械质量监督检验中心 | Standard sine wave air flow generator for testing breathing machine and anesthetizing system |
| CN103362903A (en) * | 2012-04-10 | 2013-10-23 | 上海示才生物科技有限公司 | Low-frequency micro pulsating pressure generator |
| CN106075684A (en) * | 2016-08-09 | 2016-11-09 | 山东省医疗器械产品质量检验中心 | The sinusoidal feeder of variable ventilation and high emulation HME moisture loss tester |
| CN106979149A (en) * | 2017-03-09 | 2017-07-25 | 同济大学 | Simulate the visual experimental apparatus of the conventional plunger pump characteristics of motion and cavitation phenomenon |
| CN107265585A (en) * | 2017-06-28 | 2017-10-20 | 王娜 | A kind of depositing reservoir pulse generating unit and method |
| CN109441757A (en) * | 2018-12-18 | 2019-03-08 | 吴加银 | A kind of plunger type mortar conveying device |
| CN110863925A (en) * | 2019-11-26 | 2020-03-06 | 中国空气动力研究与发展中心 | Hypersonic mechanical transmission type frequency modulation pulse injection device and method |
| CN112879177A (en) * | 2021-02-05 | 2021-06-01 | 中国空气动力研究与发展中心空天技术研究所 | Hypersonic mechanical transmission type gas-liquid dual-purpose pulse injection device and method |
| CN113027875A (en) * | 2021-03-01 | 2021-06-25 | 哈尔滨工程大学 | Rotary flow pulsation generating device |
| CN113295728A (en) * | 2021-04-26 | 2021-08-24 | 上海交通大学 | Visual flow heat transfer experiment system for reactor core of ocean molten salt micro-reactor pebble bed |
Families Citing this family (1)
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| KR101285034B1 (en) * | 2011-11-04 | 2013-07-10 | 한형수 | Cam type fluid dispenser |
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2008
- 2008-11-11 CN CN200810232217XA patent/CN101403406B/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410288A (en) * | 2011-08-30 | 2012-04-11 | 北京航空航天大学 | Wheel-disc-type flow pulsation generator |
| CN103362903A (en) * | 2012-04-10 | 2013-10-23 | 上海示才生物科技有限公司 | Low-frequency micro pulsating pressure generator |
| CN102679799A (en) * | 2012-05-11 | 2012-09-19 | 武汉工程大学 | Plug type pulsating flow generator |
| CN102679799B (en) * | 2012-05-11 | 2013-09-18 | 武汉工程大学 | Plug type pulsating flow generator |
| CN103071217A (en) * | 2013-02-07 | 2013-05-01 | 天津市医疗器械质量监督检验中心 | Standard sine wave air flow generator for testing breathing machine and anesthetizing system |
| CN103071217B (en) * | 2013-02-07 | 2016-03-02 | 天津市医疗器械质量监督检验中心 | Standard sine wave flow generator is used in a kind of respirator and anesthesiaing system test |
| CN106075684A (en) * | 2016-08-09 | 2016-11-09 | 山东省医疗器械产品质量检验中心 | The sinusoidal feeder of variable ventilation and high emulation HME moisture loss tester |
| CN106075684B (en) * | 2016-08-09 | 2018-05-04 | 山东省医疗器械产品质量检验中心 | Sinusoidal feeder and high emulation HME the moisture loss testers of variable throughput |
| CN106979149B (en) * | 2017-03-09 | 2018-10-26 | 同济大学 | Simulate the visual experimental apparatus of the conventional plunger pump characteristics of motion and cavitation phenomenon |
| CN106979149A (en) * | 2017-03-09 | 2017-07-25 | 同济大学 | Simulate the visual experimental apparatus of the conventional plunger pump characteristics of motion and cavitation phenomenon |
| CN107265585A (en) * | 2017-06-28 | 2017-10-20 | 王娜 | A kind of depositing reservoir pulse generating unit and method |
| CN109441757A (en) * | 2018-12-18 | 2019-03-08 | 吴加银 | A kind of plunger type mortar conveying device |
| CN110863925A (en) * | 2019-11-26 | 2020-03-06 | 中国空气动力研究与发展中心 | Hypersonic mechanical transmission type frequency modulation pulse injection device and method |
| CN110863925B (en) * | 2019-11-26 | 2021-09-07 | 中国空气动力研究与发展中心 | Hypersonic mechanical transmission type frequency modulation pulse injection device and method |
| CN112879177A (en) * | 2021-02-05 | 2021-06-01 | 中国空气动力研究与发展中心空天技术研究所 | Hypersonic mechanical transmission type gas-liquid dual-purpose pulse injection device and method |
| CN112879177B (en) * | 2021-02-05 | 2022-07-08 | 中国空气动力研究与发展中心空天技术研究所 | Hypersonic mechanical transmission type gas-liquid dual-purpose pulse injection device and method |
| CN113027875A (en) * | 2021-03-01 | 2021-06-25 | 哈尔滨工程大学 | Rotary flow pulsation generating device |
| CN113295728A (en) * | 2021-04-26 | 2021-08-24 | 上海交通大学 | Visual flow heat transfer experiment system for reactor core of ocean molten salt micro-reactor pebble bed |
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| CN101403406B (en) | 2010-11-10 |
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