CN205524904U - Novel leading skew stator formula pump spouts propeller - Google Patents
Novel leading skew stator formula pump spouts propeller Download PDFInfo
- Publication number
- CN205524904U CN205524904U CN201620025403.6U CN201620025403U CN205524904U CN 205524904 U CN205524904 U CN 205524904U CN 201620025403 U CN201620025403 U CN 201620025403U CN 205524904 U CN205524904 U CN 205524904U
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- China
- Prior art keywords
- stator
- skew back
- preposition
- wheel hub
- impeller
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Abstract
The utility model provides a novel leading skew stator formula pump spouts propeller, including leading skew stator, rearmounted impeller, cyclic annular pipe, support bearing, rotation axis, wherein equal coaxial the setting in the inside of cyclic annular pipe of stator wheel hub and rearmounted impeller, leading skew stator evenly incline to set up in stator wheel hub's outer wall and with cyclic annular pipe fixed connection, the rotation axis is coaxial stator wheel hub and the rearmounted impeller of passing in proper order, and the rotation axis end is provided with fairing cap, and rearmounted impeller is located between stator wheel hub and the fairing cap, rearmounted impeller is fixed cup joint in the rotation axis outside and by the rotation axis driving acting, coaxial the support inside stator wheel hub of slip support bearing that the rotation axis passes through. The utility model discloses effectively reduce radiated noise, improve structural strength, be suitable for shocking resistance and the low noise propulsion of the underwater navigation body.
Description
Technical field
This utility model belongs to pump hydraulic jet propulsion field, is specifically related to a kind of novel preposition skew back guide-vane pump-jet propulsor and method for designing thereof.
Background technology
Along with the horse boat MH370 boat generation of difficult matter part and carrying out of relevant search-and-rescue work, the U.S. " bluefin tuna " autonomous type aircraft constantly enters the sight line of people, and the common people have had further insight to the importance of underwater detectoscope.Sound stealth is one of important performance indexes of underwater sailing body, also it is the underwater sailing body important leverage that completes mission task, it not only determines the sphere of action of self sonar and signal receiving device, the most also significantly affects self probability by the other side's sonar detection.Propeller forms as the core in underwater sailing body propulsion system, and it plays vital effect to underwater sailing body Sound stealth performance.This is because: on the one hand, along with the appearance of the damping noise reduction technology such as cabin, buoyant raft, vibration isolator, flexible connecting pipe, the mechanical noise of underwater sailing body has gradually obtained effective improvement and control；On the other hand, propeller is cannot to be eliminated by device for vibration insutation via the direct radiated noise of inlet pipeline, and the reduction of its radiated noise can only being designed to deal with by noise-reduced propeller.
Utility model content
The purpose of this utility model is aiming at the defect of prior art, it is provided that a kind of novel preposition skew back guide-vane pump-jet propulsor and method for designing thereof, effectively reduces radiated noise, improves structural strength, and the shock resistance and the low noise that are suitable for underwater sailing body advance.
This utility model provides a kind of novel preposition skew back guide-vane pump-jet propulsor, and including preposition skew back stator, rearmounted impeller, annular conduit, spring bearing, rotary shaft, wherein stator wheel hub and rearmounted impeller are all coaxially disposed the inside in annular conduit；Preposition skew back stator uniform pitch is arranged at the outer wall of stator wheel hub and fixing with annular conduit is connected；Rotary shaft is sequentially coaxially through stator wheel hub and rearmounted impeller, and rotary shaft end is provided with fair water cone, and rearmounted impeller is between stator wheel hub and fair water cone；Rearmounted impeller is fixedly sheathed in rotary shaft outside and is driven acting by rotary shaft, and the sliding support coaxial bearing that rotary shaft is passed through is supported in stator hub interior.
Described rearmounted impeller inlet circular rector is equal to the circular rector of preposition skew back stator outlet.The skew back ratio of described preposition skew back stator blade is more than 50%.Described annular conduit outside wall surface is shaped as airfoil structure.
The method for designing of a kind of novel preposition skew back guide-vane pump-jet propulsor, comprises the following steps:
A. according to flow, lift, rotating speed import and export size and the definition of lift of target pump hydraulic propeller, the blade calculating rearmounted impeller imports and exports circular rector；
B. three features above cross sections are selected in rearmounted impeller blade radial direction, wherein choosing cross section, rearmounted impeller hub radius place is a characteristic cross-section, choose cross section, rearmounted wheel rim radius place as another characteristic cross-section, remaining characteristic cross-section is uniformly chosen between rearmounted cross section, impeller hub radius place and cross section, rearmounted wheel rim radius place, will be closest to the characteristic cross-section in cross section, rearmounted wheel rim radius place as circular rector maximum cross-section；
C. the rearmounted impeller that a step calculates is imported and exported the circular rector circular rector value as circular rector maximum cross-section, the import and export circular rector value in cross section, rearmounted impeller hub radius place is taken as circular rector maximum cross-section circular rector value and is multiplied by hub diameter ratio multiple, cross section, rearmounted wheel rim radius place is imported and exported circular rector value and is taken as 0.5 times of circular rector maximum cross-section circular rector value or following, and remaining characteristic cross-section turnover circular rector value is tried to achieve by linear interpolation；
The circular rector that circular rector value is rearmounted impeller inlet of the most preposition skew back stator outlet；
E. the circular rector imported and exported according to circular rector and the rearmounted impeller of the outlet of preposition skew back stator completes rearmounted impeller and the three Dimensional Design of preposition skew back stator blade；
F. choosing the skew back ratio of preposition skew back stator blade, wherein skew back ratio is more than 50%, and skew back angle uses linear distribution form along blade radial；
G. choose conduit outer wall face shape, use the preferable airfoil structure of mobile performance；
H. by high-performance calculation machine platform, use numerical experimentation means that the propulsive performance of pump-jet propulsor is calculated and assessed；
I. judging whether design result meets design objective, if not met design objective, Iterative Design will be circulated, constantly revising rearmounted impeller and the circular rector of preposition skew back stator blade, the skew back angle of preposition skew back stator blade, until meeting design objective.
Preposition inclination stator of the present utility model is in the front of rearmounted impeller influent stream, on the one hand the influent stream of work doing impeller is made to be more uniformly distributed, on the other hand make the stator-rotor interaction region of pump hydraulic propeller in the front of work doing impeller, the stator-rotor interaction that the high speed and high pressure outlet area after the acting of its intensity impeller to be significantly less than occurs.Preposition skew back stator of the present utility model makes the high wake district of ship/ship tail gradually enter impeller inlet along stator radius section, thus reaches to reduce the purpose of impeller blade exciting force.Meanwhile, this utility model uses preposition skew back stator can effectively reduce skew back and the torsional deformation of work doing impeller, and then is effectively increased blade wheel structure intensity.Preposition inclination stator leaf of the present utility model the most suitably reduces load and mates with impeller loads, has reached to suppress pump spray impeller slightly eddy current dynamic and reduce the purpose of propulsion noise.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation a；
Fig. 2 is this utility model structural representation b；
Wherein, 1-preposition skew back stator；The rearmounted impeller of 2-；3-conduit；4-fair water cone；5-stator wheel hub；6-spring bearing；7-rotary shaft, cross section, 8-rearmounted impeller hub radius place, cross section, 9-rearmounted wheel rim radius place.
Detailed description of the invention
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, it is simple to be well understood to this utility model, but they do not constitute restriction to this utility model.
As shown in the figure, this utility model provides a kind of novel preposition skew back guide-vane pump-jet propulsor, it is characterized in that: it includes preposition skew back stator 1, rearmounted impeller 2, annular conduit 3, spring bearing 6, rotary shaft 7, and wherein stator wheel hub 5 and rearmounted impeller 2 are all coaxially disposed in the inside of annular conduit 3；Preposition skew back stator 1 uniform pitch is arranged at the outer wall of stator wheel hub 5 and fixing with annular conduit 3 is connected；Rotary shaft 7 is sequentially coaxially through stator wheel hub 5 and rearmounted impeller 2, and rotary shaft 7 end is provided with fair water cone 4, and rearmounted impeller 2 is between stator wheel hub 5 and fair water cone 4；Rearmounted impeller 2 is fixedly sheathed in rotary shaft 7 outside and is driven acting by rotary shaft 7, and sliding support bearing 6 coaxial support that rotary shaft 7 is passed through is internal in stator wheel hub 5.Described rearmounted impeller 2 import circular rector is equal to the circular rector of preposition skew back stator 2 outlet.
The method for designing of above-mentioned novel preposition skew back guide-vane pump-jet propulsor comprises the following steps:
A. according to flow, lift, rotating speed import and export size and the definition of lift of target pump hydraulic propeller, the blade calculating rearmounted impeller imports and exports circular rector.Using blade loading size to represent the power that blade does work during calculating, actually load distribution is i.e. blade swirl distribution.Pump class angle of rake import and export circular rector difference determines angle of rake lift, and the height of lift determines the size of propeller acting ability.Lift Ht=ω (г is understood according to the definition of lift in " modern pump is theoretical and designs "2-г1)/(2g π), wherein ω represents angular velocity, г=2 π RvuRepresenting the circular rector of impeller section, subscript 1 and 2 represents inlet and outlet position.
B. 5 characteristic cross-sections are selected in rearmounted impeller blade radial direction, wherein choose cross section, rearmounted impeller hub radius place 8 be percentage ratio as 0 characteristic cross-section, choose cross section, rearmounted wheel rim radius place 9 as percentage ratio as 1 characteristic cross-section, remaining characteristic cross-section is uniformly chosen between rearmounted impeller hub and rearmounted wheel rim, three characteristic cross-sections 25% are selected between rearmounted impeller hub and rearmounted wheel rim, 50%, 75%, will be closest in 1 percentage ratio characteristic cross-section as circular rector maximum cross-section, will 75% characteristic cross-section as circular rector maximum cross-section；
C. the rearmounted impeller that a step calculates is imported and exported the circular rector circular rector value as circular rector maximum cross-section, percentage ratio is that the import and export circular rector value of the characteristic cross-section of 0 is taken as circular rector maximum cross-section circular rector value and is multiplied by hub diameter ratio multiple, percentage ratio is that the import and export circular rector value of the characteristic cross-section of 1 is taken as 0.5 times of circular rector maximum cross-section circular rector value or following, and other characteristic cross-sections turnover circular rector value is tried to achieve by linear interpolation；
The circular rector that circular rector value is rearmounted impeller inlet of the most preposition skew back stator outlet, is i.e. to mate preposition inclination stator load and rearmounted impeller loads.It addition, according to the practical experience of noise-reduced propeller design, cavity is angle of rake important noise source, and propeller blade ending is the position that linear velocity is the highest, is also the position being easiest to cavity occur.This utility model reaches to suppress pump spray impeller slightly eddy current dynamic and reduce the purpose of propulsion noise by reducing preposition skew back stator leaf load (circular rector) slightly.
E. the circular rector imported and exported according to circular rector and the rearmounted impeller of the outlet of preposition skew back stator completes the three Dimensional Design (list of references " mixed-flow water jet propulsion pump three Dimensional Design and numerical experimentation ", Jin Shuanbao) of rearmounted impeller and preposition skew back stator blade；
F. choose the skew angle of preposition skew back stator blade, wherein skew back ratio be 50% or more than, skew back angle uses linear distribution form along blade radial；The high wake district making ship/ship tail enters impeller inlet gradually along stator radius section, thus reaches to reduce the purpose of impeller blade exciting force.Meanwhile, this utility model uses skew back stator can effectively reduce skew back and the torsional deformation of work doing impeller, and then is effectively increased blade wheel structure intensity.Wherein blade-side oblique angle refers to the skew angle of blade tip tangent plane, is referred to as 100% skew back when blade rake angle displacement is exactly equal to 360 °/Z (Z is the number of blade), is referred to as big skew back when skew back is more than or equal to 50%.
G. choose conduit outer wall face shape, use the preferable airfoil structure of mobile performance；
H. by high-performance calculation machine platform, numerical experimentation means are used the propulsive performance of pump-jet propulsor to be calculated and assessed (list of references " hydraulic propeller Transform Type design based on numerical experimentation and on-board testing ", Jin Shuanbao)；
I. judging whether design result meets design objective, if not met design objective, Iterative Design will be circulated, constantly revising rearmounted impeller and the circular rector of preposition skew back stator blade, the skew back angle of preposition skew back stator blade, until meeting design objective.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Claims (4)
1. a novel preposition skew back guide-vane pump-jet propulsor, it is characterised in that: its bag
Include preposition skew back stator (1), rearmounted impeller (2), annular conduit (3), spring bearing (6),
Rotary shaft (7), wherein stator wheel hub (5) and rearmounted impeller (2) are all coaxially disposed in ring
The inside of shape conduit (3)；Preposition skew back stator (1) uniform pitch is arranged at stator wheel hub
(5) outer wall also fixing with annular conduit (3) is connected；Rotary shaft (7) is sequentially coaxially
Through stator wheel hub (5) and rearmounted impeller (2), rotary shaft (7) end is provided with water conservancy diversion
Cap (4), rearmounted impeller (2) is positioned between stator wheel hub (5) and fair water cone (4)；
Rearmounted impeller (2) is fixedly sheathed in rotary shaft (7) outside and is driven by rotary shaft (7)
Acting, sliding support bearing (6) coaxial support that rotary shaft (7) is passed through is in stator wheel hub
(5) internal.
Novel preposition skew back guide-vane pump-jet propulsor the most according to claim 1,
It is characterized in that what rearmounted impeller (2) import circular rector exported equal to preposition skew back stator (2)
Circular rector.
Novel preposition skew back guide-vane pump-jet propulsor the most according to claim 1,
The skew back ratio that it is characterized in that preposition skew back stator (1) blade is more than 50%.
Novel preposition skew back guide-vane pump-jet propulsor the most according to claim 1,
It is characterized in that annular conduit (3) outside wall surface is shaped as airfoil structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025403.6U CN205524904U (en) | 2016-01-12 | 2016-01-12 | Novel leading skew stator formula pump spouts propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025403.6U CN205524904U (en) | 2016-01-12 | 2016-01-12 | Novel leading skew stator formula pump spouts propeller |
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| Publication Number | Publication Date |
|---|---|
| CN205524904U true CN205524904U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620025403.6U Expired - Fee Related CN205524904U (en) | 2016-01-12 | 2016-01-12 | Novel leading skew stator formula pump spouts propeller |
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| CN (1) | CN205524904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109110096A (en) * | 2018-08-06 | 2019-01-01 | 中国人民解放军海军工程大学 | Novel no axle construction pump spray formula propeller and the submarine navigation device containing the propeller |
-
2016
- 2016-01-12 CN CN201620025403.6U patent/CN205524904U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109110096A (en) * | 2018-08-06 | 2019-01-01 | 中国人民解放军海军工程大学 | Novel no axle construction pump spray formula propeller and the submarine navigation device containing the propeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20190112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |