CN204984942U - Centrifugal pump of making an uproar falls in damping with biomimetic structure - Google Patents
Centrifugal pump of making an uproar falls in damping with biomimetic structure Download PDFInfo
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- CN204984942U CN204984942U CN201520439783.3U CN201520439783U CN204984942U CN 204984942 U CN204984942 U CN 204984942U CN 201520439783 U CN201520439783 U CN 201520439783U CN 204984942 U CN204984942 U CN 204984942U
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Abstract
Centrifugal pump of making an uproar falls in damping with biomimetic structure, including spiral case, connecting axle, motor and impeller, the motor be fixed in the casing outside, the connecting axle bearing is in the spiral case and in stretching into the spiral case, the impeller include blade, front shroud and back shroud, the blade is adorned in the front on the connecting axle between the back shroud and is lain in the spiral case, the motor passes through connecting axle and impeller coupling, is equipped with first bionical section in spiral case diffuser below, the vertical section contour shape of first bionical section is the circular arc dentate structure of imitative flying bird assistant outline, starting point bionical section first lies in that the cut water begins, the terminal point extends to between the first section and second section of spiral case pumping chamber, the head circular arc department of cut water sets up and has an at least bellied bionical surface texture. The beneficial effects of the utility model are that: reduce the amplitude of fierce department of centrifugal pump internal pressure pulsation, convenient, accurate have comparatively effectual promotion to centrifugal pump flow, lift, can improve the hump of centrifugal pump performance curve appearance simultaneously.
Description
Technical field
The utility model relates to a kind of vibration and noise reducing centrifugal pump with biomimetic features.
Background technique
Centrifugal pump, as a kind of universal machine, plays an important role in national economy.But its flow passage components structure is comparatively complicated, and there is stator-rotor interaction effect between the impeller rotated and static spiral case, when centrifugal pump is run, interior flow field presents three-dimensional unstable state turbulent flow, also can the pulsation of accompanied by intense and noise.This can have a strong impact on security of operation and the working life of system and equipment, and for the military equipment that concealment performance is higher, such as submarine etc., vibration and noise are then the problems needing solution badly.
Unsteady pressure in centrifugal pump, is considered to induced vibration principal element.The current research for the pressure pulsation of centrifugal pump internal cause fluid induced shows, the pressure pulsation of centrifugal pump interior flow field is relevant with cut water and the gap between cut water and impeller.The method of the vibration & noise of current reduction centrifugal pump interior flow field generally mainly contains: change gap between impeller and cut water, change cut water pattern and change cut water laying angle.But carry out in the research of vibration and noise reducing according to above-mentioned three kinds of schemes to centrifugal pump, when changing impeller and separation tongue gap or cut water laying angle, although the pulsation of centrifugal pump inside is improved preferably, with centrifugal pump external characteristics performance for cost; And when changing cut water pattern, although as adopted the pulse characteristic that also can reduce centrifugal pump interior flow field during ladder cut water while not affecting performance of centrifugal pump, because cut water size is little, pattern is complicated, adopt the difficulty inherently increasing manufacture during ladder cut water.
Centrifugal pump is of a great variety, and some centrifugal pump is after manufactured dispatching from the factory, and often occur the situation that flow, lift are bigger than normal or less than normal, performance curve also occurs hump sometimes.In order to meet its performance requirement, common way is cut impeller outlet.Impeller trim method has two kinds substantially: evenly cut around circumference of impeller direction, reduces impeller outlet diameter, ensures that the global shape of impeller is constant; Only partial cut is carried out to impeller outlet place blade, retain cover plate constant.But above two kinds of Impeller trim modes can only solve the situation that partial properties curve has hump or flow, lift does not reach requirement, when flow, lift is on the low side time, above-mentioned Impeller trim mode can not well be dealt with problems, its shortcoming can not effectively improve its flow, lift, or make the performance curve stability after cutting bad.
Biological evolution ， Owl class through 1 years can realize in hunting process high speed noiseless flight ， Er Owl class uniqueness body surface noise reduction system have benefited from the special construction of its assistant.Existing scholar selects by organism surface noise reduction feature application in this problem at present, and research proves that the coupling biomimetic features utilizing bionics principle to construct has obvious noise reduction.
Summary of the invention
Its flow, lift can not be effectively improved in order to solve current centrifugal pump, or make the problem that the performance curve stability after cutting is bad, the utility model proposes a kind of vibration and noise problem reducing centrifugal pump interior flow field, effectively can improve the flow of centrifugal pump, the vibration and noise reducing centrifugal pump with biomimetic features of lift simultaneously.
The vibration and noise reducing centrifugal pump with biomimetic features described in the utility model, comprise spiral case, coupling shaft, motor and impeller, described motor is fixed on outside housing, and described coupling shaft support is in spiral case and stretch in spiral case, described impeller comprises blade, front shroud and back shroud, described blade to be contained on the coupling shaft between front and rear cover plate and to be positioned at spiral case, described motor is coupling by described coupling shaft and impeller, it is characterized in that: below spiral case diffuser, be provided with first bionical section, the Xray films shape of described first bionical section is the circular arc dentation structure (bionic, non-smooth structure) of imitative flying bird assistant external frame, described circular arc dentation structure is linear sinusoidal curve, the starting point of first bionical section is positioned at cut water beginning, terminal extends between the first section of pumping chamber of scroll casing and the second section, and the shape area of the first section is identical with the shape area of former first section, described former first section is the section that the cylindrical at spiral case external frame place and spiral case basic circle are formed, the head circular arc place of described cut water is provided with the protruding bionic surface structure (bionic, non-smooth structure) of at least one row.
The symmetrical side of described diffuser is provided with second bionical section, and the Xray films shape of described second bionical section is the linear sinusoidal circular arc dentation structure (bionic, non-smooth structure) of imitative flying bird assistant; Described second bionical section from spiral case the tenth section, and extend to diffuser outlet port along diffuser grain direction, and the shape area ensureing the tenth section of diffuser and the 11 section is identical with former tenth section, former 11 section configuration area respectively.
Projection on described bionic surface structure is millimetre-sized ball, cylinder, tri-prism or quadrangular.
The unit interval of the circular arc dentation structure of described first bionical section is 26 ~ 42mm, and rising height is 3 ~ 7mm, and wherein the ratio at rising height and interval is between 0.1 ~ 0.2, and unit number is 1 ~ 4.
Described second bionical section is whole diffuser 3/4 along grain direction arrangement length, the end point of biomimetic features is concordant with volute outlet place, the circular arc dentation element of construction of second bionical section is spaced apart 26 ~ 42mm, cell height is 3 ~ 7mm, the unit number of circular arc dentation structure is 2 ~ 4, and whole second bionical section 360 ° are surrounded diffuser outlet port.
Described spiral case is single spiral case, double volute or three-volute structure.
Described spiral case is followed successively by the double-volute structure of the first spiral case and the second spiral case formation from outside to inside, second cut water of the second described spiral case is 180 ° of symmetries along the cut water of impeller central and the first spiral case, the second described spiral case is provided with the 3rd bionical section, and the Xray films shape of described the 3rd bionical section is the linear sinusoidal circular arc dentation structure of imitative flying bird assistant external frame; Described the 3rd bionical section from the second cut water head along the second spiral case directional spreding to pumping chamber the 5th section and the 6th section; Second spiral case thickness is 1/25 of spiral case diffuser outlet diameter, ensures that the shape area of the 5th section is identical with the shape area of former 5th section, and described former 5th section is the cylindrical at the second spiral case external frame place and the section of spiral case basic circle formation.
Second spiral case is positioned at on the circular arc that is the center of circle of spiral case top, and the tail end of the second spiral case drops between eighth section and the 9th section.
The second described spiral case flow distribution plate is replaced.
Front shroud between adjacent two panels blade and/or back shroud perimeter band fluted, ensure that blade exit place is positioned at peak, namely ensure that the diameter at blade exit place is constant.
Bionical worm frame of the present utility model is applicable to single spiral case, double volute or three volute pumps.The bionic, non-smooth structure adopting circular arc dentation structure is the most strongly located in whole centrifugal pump pressure pulsation, main is herein that object is analyzed with double volute, namely near cut water head, cut water head to pumping chamber first section, the second spiral case cut water head adopts bionic, non-smooth structure to pumping chamber the 5th section part and diffuser outlet port.By the morphological parameters obtaining being correlated with to the analysis of Asio otus aerofoil profile, and the concrete structure of the bionical spiral case of designing requirement determination Non-smooth surface according to spiral case.
Cut water head construction of the present utility model is applicable to single cut water, two cut water and ladder cut water.Namely in the miniature Non-smooth surface form of cut water head configuration ball, cylinder, quadrangular or tri-prism, the design parameter of Non-smooth surface form is: length is slightly little than cut water length, be about 0.5mm around cut water circumferencial direction gap, guarantee form a row bionic surface structure cut water head is minimum.
Bionical worm frame of the present utility model is applicable to single spiral case, double volute or three volute pumps, this bionical worm frame of Main Analysis is applied to the situation of double volute centrifugal pump herein, wherein bionical worm frame from cut water head along the first spiral case directional spreding to pumping chamber first section near, be simultaneously distributed to pumping chamber the 5th section vicinity from the second cut water head along the second spiral case direction (flow distribution plate).
The flow instabilities that bionical diffuser structure of the present utility model causes due to whirlpool or Secondary Flow for improving centrifugal pump volute outlet place, because centrifugal pump volute outlet place pressure is maximum, the unstable rule of fluid can cause the great pressure pulsation in volute outlet place, and strong pressure pulsation is also the principal element of induced vibration and noise.
Special purpose impeller cutting structure of the present utility model comprises blade and front and rear cover plate, its cutting mode comprises following three kinds of situation: a, ensures that impeller blade place cover plate diameter is constant, and on front and rear cover plate between blade exit place and blade exit place, adopt the cutting of circular arc dentation form (bionic, non-smooth form) parallel to an axis; B, ensure that impeller blade place cover plate diameter is constant, and on front shroud between blade exit place and blade exit place, adopt the cutting of circular arc dentation form parallel to an axis, but back shroud remains unchanged; C, ensure that impeller blade place cover plate diameter is constant, and on back shroud between blade exit place and blade exit place, adopt the cutting of circular arc dentation form parallel to an axis, but front shroud remains unchanged.For the above-mentioned cover plate through special purpose impeller cutting, cover plate outlet port circumference forms circular arc dentation structure, and ensures that blade exit place is positioned at the peak of circular arc dentation form, namely ensures that the diameter at blade exit place is constant.
Biomimetic features working principle: the circular arc dentation structure that bionical spiral case part adopts, the most acutely elasticity of fluid region can be formed in place in centrifugal pump pressure pulsation, when fluid because the stator-rotor interaction between impeller and spiral case, and when producing liquid flow impact, whirlpool, Secondary Flow, the effect of absorption liquid stream impact loss can be played in elasticity of fluid region, thus inherently reduce the pressure pulsation of centrifugal pump inside, and due to the buffer function of elastic region, the amplitude of pressure pulsation is shaken less; And the special circular arc dentation structure in cut water region can improve the flowing state of impeller outlet place and diffuser outlet port liquid, obvious elimination impeller outlet place jet---dynamic phenomenon, make the pressure of impeller channel inner fluid, the more even of velocity distribution, the boundary layer separation of the fluid in diffuser runner then obviously disappears, the generation of whirlpool and Secondary Flow can be avoided, thus directly reduce in impeller channel and the pulsation of diffuser outlet pressure; Impeller trim part adopts the cutting of circular arc dentation form, keep blade diameter constant, can't affect liquid and obtain energy from impeller, and the cutting of impeller outlet place cover plate will reduce the disc friction of liquid largely, thus have centrifugal lift of pump and significantly promote effect.
The beneficial effects of the utility model are: the amplitude that significantly can not only reduce the fiercest place of centrifugal pump internal pressure pulsation, and the pulsation amplitude at other positions of centrifugal pump interior flow field also declines to a certain extent, the flowing state of impeller channel and pumping chamber runner inner fluid is significantly improved simultaneously, and the phenomenon of jet tail and boundary layer separation is controlled preferably; The special cutting structure of centrifugal pump impeller is then under the condition not changing other component, comparatively for convenience of, have Centrifugal Pump, lift and comparatively effectively promote accurately, the hump situation that centrifugal pump performance occurs can be improved simultaneously.This means that the flowing of centrifugal pump flow field fluid in putting into practice is more mild, pulsation and noise significantly reduce, and the external characteristics performance of centrifugal pump such as flow, lift etc. will promote to some extent.
Accompanying drawing explanation
Fig. 1 is traditional spiral case profile diagram.
Fig. 2 is the utility model runner middle section schematic diagram (wherein A ~ L represents the first ~ the 12 section respectively);
Fig. 3 is impeller plane figure in Fig. 2;
Fig. 4 is worm frame figure figure of the present utility model and traditional spiral case comparison diagram (dotted line is traditional spiral case profile);
Fig. 5 is the partial enlarged drawing in cut water region in Fig. 2;
Fig. 6 is Fig. 4 cut water head enlarged view (ball or cylinder);
Fig. 7 is the cut water head construction figure (ball) of Fig. 6;
Fig. 8 is the cut water head construction figure of Fig. 7;
Fig. 9 is Fig. 5 cut water head enlarged view (tri-prism);
Figure 10 is the cut water head construction figure of Fig. 9;
Figure 11 is Fig. 5 cut water head enlarged view (quadrangular);
Figure 12 is the cut water head construction figure of Figure 11.
Embodiment
The utility model is further illustrated below in conjunction with accompanying drawing
With reference to accompanying drawing:
The embodiment 1 vibration and noise reducing centrifugal pump with biomimetic features described in the utility model, comprise spiral case 1, coupling shaft 2, motor and impeller 3, described motor is fixed on outside spiral case 1, and described coupling shaft 2 support is in spiral case 1 and stretch in spiral case 1, described impeller 3 comprises blade 31, front shroud and back shroud, described blade 31 to be contained on the coupling shaft 2 between front and rear cover plate 32 and to be positioned at spiral case 1, described motor is coupling with impeller 3 by described coupling shaft 2, first bionical section 12 is provided with below spiral case 1 diffuser 11, the Xray films shape of described first bionical section 12 is the sinusoidal circular arc dentation structure of approximately linear of imitative flying bird assistant external frame, the starting point of first bionical section 12 is positioned at the first cut water 13 beginning, terminal extends between the first section A of spiral case 1 pumping chamber and the second section B, and the shape area of the first section A is identical with the shape area of former first section A, described former first section is the section that the cylindrical at spiral case external frame 13 place and spiral case basic circle 14 are formed, the head circular arc place of the first described cut water 13 is provided with the protruding bionic surface structure 131 of at least one row, and bionic surface structure 131 circumferential size is about 0.5mm, and axial minimum dimension is 0.5mm, and axial overall dimensions is more smaller than cut water width.
The symmetrical side of described diffuser 11 is provided with second bionical section 111, and the Xray films shape of described second bionical section 111 is the sinusoidal circular arc dentation structure of approximately linear of imitative flying bird assistant; Described second bionical section 111 from spiral case the tenth section, and extend to diffuser 11 outlet port along diffuser 11 grain direction, and the shape area ensureing the tenth section J of diffuser and the 11 section K is identical with former tenth section, former 11 section configuration area respectively.
Projection on described bionic surface structure 131 is millimetre-sized ball, cylinder, tri-prism or quadrangular, scheme one: spheroidal structure, the diameter of ball is about 0.5mm, and the arrangement mode of ball, except the rounded projections arranged in figure, can also have the various arrangement mode such as quadrilateral, circle.Scheme two: cylindrical structural, body diameter is about 0.5mm, and width is more smaller than cut water, and the orientation of Non-smooth surface cylinder both can vertical with cut water circumference also can along cut water circumferencial direction.Scheme three: triangular structure, triangle is isosceles triangle, and base width is 0.5mm, and width is more smaller than cut water, and the orientation of Non-smooth surface tri-prism both can vertical with cut water circumference also can along cut water circumferencial direction.Scheme four: rectangular configuration, rectangle width is 0.5mm, and length is more smaller than cut water, and the orientation of Non-smooth surface cuboid both can vertical with cut water circumference also can along cut water circumferencial direction.
The unit interval of the circular arc dentation structure of described first bionical section 12 is 26 ~ 42mm, rising height is 3 ~ 7mm, wherein the ratio at circular arc dentation structure height and interval is between 0.1 ~ 0.2, unit number is 1 ~ 4, above-mentioned circular arc dentation structure is analyzed by the assistant form special to Asio otus to obtain, large quantity research is recognized for Owl class can realize the noiseless flight of high speed in hunting process; and the body surface noise reduction system of Owl class uniqueness has benefited from the special construction of its assistant, and Asio otus aerofoil profile is considered to there is good control action to pneumatic noise.
Described second bionical section 111 is whole diffuser 3/4 along grain direction arrangement length, the end point of biomimetic features is concordant with volute outlet place, the circular arc dentation element of construction of second bionical section 111 is spaced apart 26 ~ 42mm, circular arc dentation element of construction height is 3 ~ 7mm, circular arc dentation element of construction number is 2 ~ 4, and whole second bionical section 360 ° are surrounded diffuser outlet port.
Described spiral case 1 is single spiral case, double volute or three-volute structure.
Described spiral case 1 is followed successively by the double-volute structure of the first spiral case 14 and the second spiral case 15 formation from outside to inside, second cut water 151 of the second described spiral case 15 along the first cut water 1 of impeller 3 center and the first spiral case 15 in 180 ° of symmetries, the second described spiral case 15 is provided with the 3rd bionical section 152, and the Xray films shape of described the 3rd bionical section 152 is the sinusoidal circular arc dentation structure of approximately linear of imitative flying bird assistant external frame; Described the 3rd bionical section 152 from the second cut water 151 head along the second spiral case 15 directional spreding to pumping chamber the 5th section E and the 6th section F; Second spiral case 15 thickness is 1/25 of spiral case diffuser 11 outlet diameter, ensure that the shape area of the 5th section E is identical with the shape area of former 5th section, described former 5th section is the cylindrical 17 at the second spiral case external frame place and the section of spiral case basic circle 16 formation.
Second spiral case 15 is positioned at on the circular arc that is the center of circle of spiral case 1 top, and the tail end of the second spiral case 15 drops between eighth section H and the 9th section I.
The second described spiral case 15 can be replaced with flow distribution plate.
Front shroud between adjacent two panels blade 31 and/or back shroud perimeter band fluted 33, ensure that blade 31 outlet port is positioned at peak, namely ensures that the diameter in blade 31 outlet port is constant.
The working principle of cut water head:
Bionic surface structure 131 can make fluid form whirlpool at feature structure place, thus reduction fluid resistance, and the elasticity of fluid region that bionic surface structure 131 is formed can the impact loss of absorption liquid stream, especially clash into for the strong waterpower of cut water head, circular arc dentation structure obviously can reduce the judder and noise that this place causes due to liquid flow impact.
The working principle of the first spiral case 14, second spiral case 15 place biomimetic features:
Centrifugal pump impeller 3 is under the drive of motor, the axle of following rotation rotates together, fluid in impeller 3 runner is got rid of to spiral case 1, spiral case 1 plays a part to collect fluid, and along with the increase in spiral case 1 cross section, constantly convert the kinetic energy of fluid to pressure energy, finally thrown away by diffuser 11, complete the acting process of whole centrifugal pump.Because centrifugal pump impeller 3 constantly rotates, spiral case 1 but keeps static, when fluid is got rid of to static spiral case 1 by impeller channel, produces fierce fluid impact, causes whirlpool and Secondary Flow, i.e. stator-rotor interaction effect.This phenomenon is especially embodied in cut water region, the gap of this place's impeller and cut water is minimum, when impeller 3 rotate to cut water the most nearby, the fluid be in the impeller channel on the right side of cut water is thrown out of along grain direction, fluid on the left of cut water in impeller channel cannot be thrown away by gap between impeller and spiral case, produces strong fluid impact at cut water and the first section part, and forms larger whirlpool, thus the pressure pulsation causing cut water region the fiercest, cause centrifugal pump vibration and noise.When adopting bionical worm frame, circular arc dentation structure can form elasticity of fluid region, absorption fluids clashes into loss and eddy current loss, and make the pressure distribution at impeller outlet place more symmetrical, improve the jet dynamic phenomenon at blade exit place, thus the pulsation amplitude reducing cut water region largely, improve the vibration & noise in centrifugal pump cut water region.
The working principle of diffuser 11 biomimetic features:
Diffuser 11 outlet is positioned to the spiral case of spiral case symmetry plane center line, the radial force of centrifugal pump is well balanced, but diffuser 11 inner fluid boundary layer separation is comparatively serious, and the flowing state extremely unstable of fluid, whirlpool and Secondary Flow are comparatively obvious.Simultaneously because diffuser fluid pressure is comparatively large, thus cause the amplitude of pressure fluctuation in diffuser comparatively large, make the vibration & noise in diffuser fairly obvious.When adopting diffuser circular arc dentation structure, when diffuser inner fluid flows through circular arc dentation structure, whirlpool and Secondary Flow phenomenon are obviously eliminated, and expansion calculation section wall boundary layer separation is also well controlled, the pressure pulsation of fluid is significantly declined, thus the vibration greatly reduced in diffuser and noise.
The working principle of special cutting impeller 3:
When liquid is by impeller channel, obtains energy mainly through blade 31, in Impeller trim process, do not cut to blade 31, therefore do not affect it liquid is done work; Cut away the deck portion 32 of impeller outlet place except blade, can obviously reduce to export disc friction, this will be conducive to the lifting of lift; The cutting of impeller outlet place cover plate 32 will reduce impeller outlet area of passage, and this is conducive to improving Centrifugal Pump, and can promote dead point, pass lift, contributes to the stability of improving SNR curve.
Above-mentioned bionical worm frame is all by utilizing numbered analog simulation technology to analyze centrifugal pump interior flow field, when result shows to adopt bionical worm frame, the pulsation amplitude that in centrifugal pump interior flow field, the fiercest place of pressure pulsation and cut water are in diffuser outlet port is well suppressed, the fluid flow state of impeller channel and diffuser is well improved simultaneously, especially the jet tail of impeller outlet is controlled significantly, and boundary layer separation in diffuser and Secondary Flow situation are obviously eliminated.Can ensure all to flow along grain direction in the flow field in spiral case like this, and liquid flow impact loss and eddy current loss can be reduced, make the vibration & noise of centrifugal pump interior flow field obtain good improvement.And special cutting is carried out to impeller wheel portion, then obviously can promote centrifugal pump lift and flow, make pump performance curve more stable.
Content described in this specification embodiment is only enumerating the way of realization that model utility is conceived; protection domain of the present utility model should not be regarded as being only limitted to the concrete form that embodiment states, protection domain of the present utility model also comprises those skilled in the art and conceives the equivalent technologies means that can expect according to the utility model.
Claims (10)
1. have the vibration and noise reducing centrifugal pump of biomimetic features, comprise spiral case, coupling shaft, motor and impeller, described motor is fixed on outside housing, and described coupling shaft support is in spiral case and stretch in spiral case, described impeller comprises blade, front shroud and back shroud, described blade to be contained on the coupling shaft between front and rear cover plate and to be positioned at spiral case, described motor is coupling by described coupling shaft and impeller, it is characterized in that: below spiral case diffuser, be provided with first bionical section, the Xray films shape of described first bionical section is the circular arc dentation structure of imitative flying bird assistant external frame, described circular arc dentation structure is linear sinusoidal curve, the starting point of first bionical section is positioned at cut water beginning, terminal extends between the first section of pumping chamber of scroll casing and the second section, and the shape area of the first section is identical with the shape area of former first section, described former first section is the section that the cylindrical at spiral case external frame place and spiral case basic circle are formed, the head circular arc place of described cut water is provided with the protruding bionic surface structure of at least one row.
2. there is the vibration and noise reducing centrifugal pump of biomimetic features as claimed in claim 1, it is characterized in that: the symmetrical side of described diffuser is provided with second bionical section, the Xray films shape of described second bionical section is the linear sinusoidal circular arc dentation structure of imitative flying bird assistant; Described second bionical section from spiral case the tenth section, and extend to diffuser outlet port along diffuser grain direction, and the shape area ensureing the tenth section of diffuser and the 11 section is identical with former tenth section, former 11 section configuration area respectively.
3. there is the vibration and noise reducing centrifugal pump of biomimetic features as claimed in claim 1, it is characterized in that: the projection on described bionic surface structure is millimetre-sized ball, cylinder, triangular prism or quadrangular.
4. there is the vibration and noise reducing centrifugal pump of biomimetic features as claimed in claim 1, it is characterized in that: the unit interval of the circular arc dentation structure of described first bionical section is 26 ~ 42mm, rising height is 3 ~ 7mm, wherein the ratio at circular arc dentation structure height and interval is between 0.1 ~ 0.2, and unit number is 1 ~ 4.
5. there is the vibration and noise reducing centrifugal pump of biomimetic features as claimed in claim 2, it is characterized in that: described second bionical section is whole diffuser 3/4 along grain direction arrangement length, the end point of biomimetic features is concordant with volute outlet place, the circular arc dentation spacing structure of second bionical section is 26 ~ 42mm, circular arc dentation structure height is 3 ~ 7mm, circular arc dentation element of construction number is 2 ~ 4, and whole second bionical section 360 ° are surrounded diffuser outlet port.
6. the vibration and noise reducing centrifugal pump with biomimetic features as described in Claims 1 to 5 any one claim, is characterized in that: described spiral case is single spiral case, double volute or three-volute structure.
7. there is the vibration and noise reducing centrifugal pump of biomimetic features as claimed in claim 6, it is characterized in that: described spiral case is followed successively by the double-volute structure of the first spiral case and the second spiral case formation from outside to inside, second cut water of the second described spiral case is 180 ° of symmetries along the cut water of impeller central and the first spiral case, the second described spiral case is provided with the 3rd bionical section, and the Xray films shape of described the 3rd bionical section is the linear sinusoidal circular arc dentation structure of imitative flying bird assistant external frame; Described the 3rd bionical section from the second cut water head along the second spiral case directional spreding to pumping chamber the 5th section and the 6th section; Second spiral case thickness is 1/25 of spiral case diffuser outlet diameter, ensures that the shape area of the 5th section is identical with the shape area of former 5th section, and described former 5th section is the cylindrical at the second spiral case external frame place and the section of spiral case basic circle formation.
8. there is the vibration and noise reducing centrifugal pump of biomimetic features as claimed in claim 7, it is characterized in that: the second spiral case is positioned at on the circular arc that is the center of circle of spiral case top, and the tail end of the second spiral case drops between eighth section and the 9th section.
9. there is the vibration and noise reducing centrifugal pump of biomimetic features as claimed in claim 7, it is characterized in that: the second described spiral case flow distribution plate is replaced.
10. there is the vibration and noise reducing centrifugal pump of biomimetic features as claimed in claim 1, it is characterized in that: the front shroud between adjacent two panels blade and/or back shroud perimeter band fluted, ensure that blade exit place is positioned at peak, namely ensure that the diameter at blade exit place is constant.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520439783.3U CN204984942U (en) | 2015-06-23 | 2015-06-23 | Centrifugal pump of making an uproar falls in damping with biomimetic structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520439783.3U CN204984942U (en) | 2015-06-23 | 2015-06-23 | Centrifugal pump of making an uproar falls in damping with biomimetic structure |
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| CN204984942U true CN204984942U (en) | 2016-01-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929953A (en) * | 2015-06-23 | 2015-09-23 | 浙江工业大学 | Vibration and noise reduction centrifugal pump provided with bionic structures |
| CN106285901A (en) * | 2016-11-08 | 2017-01-04 | 吉林大学 | A kind of vehicular engine radiator fan based on the exploitation of owl wing plumage |
| CN106286400A (en) * | 2016-09-23 | 2017-01-04 | 东华大学 | A kind of bionical snail tongue with high-efficient low-noise multi-wing centrifugal fan |
| CN110821890A (en) * | 2019-12-11 | 2020-02-21 | 江苏大学镇江流体工程装备技术研究院 | Centrifugal pump volute with bionic structure |
-
2015
- 2015-06-23 CN CN201520439783.3U patent/CN204984942U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929953A (en) * | 2015-06-23 | 2015-09-23 | 浙江工业大学 | Vibration and noise reduction centrifugal pump provided with bionic structures |
| CN106286400A (en) * | 2016-09-23 | 2017-01-04 | 东华大学 | A kind of bionical snail tongue with high-efficient low-noise multi-wing centrifugal fan |
| CN106286400B (en) * | 2016-09-23 | 2018-12-04 | 东华大学 | A kind of bionical volute tongue with high-efficient low-noise multi-wing centrifugal fan |
| CN106285901A (en) * | 2016-11-08 | 2017-01-04 | 吉林大学 | A kind of vehicular engine radiator fan based on the exploitation of owl wing plumage |
| CN110821890A (en) * | 2019-12-11 | 2020-02-21 | 江苏大学镇江流体工程装备技术研究院 | Centrifugal pump volute with bionic structure |
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