CN105818951A - Novel front laterally-inclined guide vane type pump spraying propeller and design method thereof - Google Patents
Novel front laterally-inclined guide vane type pump spraying propeller and design method thereof Download PDFInfo
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- CN105818951A CN105818951A CN201610019456.1A CN201610019456A CN105818951A CN 105818951 A CN105818951 A CN 105818951A CN 201610019456 A CN201610019456 A CN 201610019456A CN 105818951 A CN105818951 A CN 105818951A
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- rearmounted
- circular rector
- skew back
- impeller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
- B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
- B63H2011/046—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps comprising means for varying pump characteristics, e.g. rotary pumps with variable pitch impellers, or adjustable stators
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a novel front laterally-inclined guide vane type pump spraying propeller and a design method thereof. The novel front laterally-inclined guide vane type pump spraying propeller comprises front laterally-inclined guide vanes, a rear impeller, an annular guide pipe, a supporting bearing and a rotary shaft. A guide vane hub and the rear impeller are coaxially arranged in the annular guide pipe. The front laterally-inclined guide vanes are evenly and obliquely arranged on the outer wall of the guide vane hub and fixedly connected with the annular guide pipe. The rotary shaft sequentially and coaxially penetrates the guide vane hub and the rear impeller. A flow guide cap is arranged at the tail end of the rotary shaft. The rear impeller is located between the guide vane hub and the flow guide cap. The outer portion of the rotary shaft is fixedly sleeved with the rear impeller, and the rear impeller is driven by the rotary shaft to act. The rotary shaft is coaxially supported in the guide vane hub through the sliding supporting bearing. By the adoption of the novel front laterally-inclined guide vane type pump spraying propeller, the radiation noise is effectively lowered, the structural strength is improved, and the propeller is suitable for anti-impact and low-noise propelling of an underwater navigation body.
Description
Technical field
The invention belongs to pump hydraulic jet propulsion field, be 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.
Summary of the invention
The purpose of the present invention 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.
The invention provides a kind of novel preposition skew back guide-vane pump-jet propulsor, 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 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.
The preposition inclination stator of the present invention 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.The preposition skew back stator of the present invention 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, the present invention 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.The preposition inclination stator leaf of the present invention 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 present configuration schematic diagram a；
Fig. 2 is present configuration schematic diagram 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 present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, it is simple to be well understood to the present invention, but they do not constitute restriction to the present invention.
As shown in the figure, the invention 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.The present invention 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, the present invention 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 (3)
1. a 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), rotary shaft (7) end is provided with fair water cone (4), and 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 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).
Novel preposition skew back guide-vane pump-jet propulsor the most according to claim 1, it is characterised in that the circular rector that rearmounted impeller (2) import circular rector exports equal to preposition skew back stator (2).
3. the method for designing of the novel preposition skew back guide-vane pump-jet propulsor described in claim 1, it is characterised in that comprise 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 judges whether design result meets design objective, if not met design objective, will be circulated Iterative Design, constantly revises 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.
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| CN201610019456.1A CN105818951B (en) | 2016-01-12 | 2016-01-12 | Novel preposition skew back guide-vane pump-jet propulsor and its design method |
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| CN201610019456.1A CN105818951B (en) | 2016-01-12 | 2016-01-12 | Novel preposition skew back guide-vane pump-jet propulsor and its design method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106844878A (en) * | 2016-12-28 | 2017-06-13 | 中国人民解放军海军工程大学 | Pump-jet propulsor multiple target fast optimal design method |
| CN106951623A (en) * | 2017-03-14 | 2017-07-14 | 中国人民解放军海军工程大学 | Pump-jet propulsor model and its method for designing with helmholtz resonance chamber |
| CN108313249A (en) * | 2017-12-20 | 2018-07-24 | 中国船舶重工集团公司第七0研究所 | Pump-jet propulsor lightweight combined-stator conduit and its forming method |
| CN110104154A (en) * | 2019-04-27 | 2019-08-09 | 江苏大学镇江流体工程装备技术研究院 | A kind of pump-jet propulsor |
| CN110329478A (en) * | 2019-06-18 | 2019-10-15 | 珠海超弦智能科技有限公司 | A kind of pressurization water conservancy diversion spout for marine propeller |
| CN111470018A (en) * | 2020-05-12 | 2020-07-31 | 韩玉军 | Pod electric pump jet propeller |
| CN111645838A (en) * | 2020-06-15 | 2020-09-11 | 中国船舶科学研究中心 | Pipe oar supports subregion guiding device that prerevolves |
| CN112115562A (en) * | 2020-09-21 | 2020-12-22 | 中国人民解放军海军工程大学 | Pump-jet propeller with blade tip circular ring embedded in guide pipe groove and design method thereof |
| CN116353802A (en) * | 2023-05-25 | 2023-06-30 | 合肥倍豪海洋装备技术有限公司 | Inflow auxiliary device and propeller with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106844878A (en) * | 2016-12-28 | 2017-06-13 | 中国人民解放军海军工程大学 | Pump-jet propulsor multiple target fast optimal design method |
| CN106951623A (en) * | 2017-03-14 | 2017-07-14 | 中国人民解放军海军工程大学 | Pump-jet propulsor model and its method for designing with helmholtz resonance chamber |
| CN106951623B (en) * | 2017-03-14 | 2020-10-02 | 中国人民解放军海军工程大学 | Pump jet propeller hydraulic model with Helmholtz resonant cavity and design method thereof |
| CN108313249A (en) * | 2017-12-20 | 2018-07-24 | 中国船舶重工集团公司第七0研究所 | Pump-jet propulsor lightweight combined-stator conduit and its forming method |
| CN110104154A (en) * | 2019-04-27 | 2019-08-09 | 江苏大学镇江流体工程装备技术研究院 | A kind of pump-jet propulsor |
| CN110329478A (en) * | 2019-06-18 | 2019-10-15 | 珠海超弦智能科技有限公司 | A kind of pressurization water conservancy diversion spout for marine propeller |
| CN111470018A (en) * | 2020-05-12 | 2020-07-31 | 韩玉军 | Pod electric pump jet propeller |
| CN111645838A (en) * | 2020-06-15 | 2020-09-11 | 中国船舶科学研究中心 | Pipe oar supports subregion guiding device that prerevolves |
| CN111645838B (en) * | 2020-06-15 | 2021-04-06 | 中国船舶科学研究中心 | Pipe oar supports subregion guiding device that prerevolves |
| CN112115562A (en) * | 2020-09-21 | 2020-12-22 | 中国人民解放军海军工程大学 | Pump-jet propeller with blade tip circular ring embedded in guide pipe groove and design method thereof |
| CN116353802A (en) * | 2023-05-25 | 2023-06-30 | 合肥倍豪海洋装备技术有限公司 | Inflow auxiliary device and propeller with same |
| CN116353802B (en) * | 2023-05-25 | 2023-09-08 | 合肥倍豪海洋装备技术有限公司 | Inflow auxiliary device and propeller with same |
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