CN204916134U - Anti ring screw of multiple spot compensation - Google Patents
Anti ring screw of multiple spot compensation Download PDFInfo
- Publication number
- CN204916134U CN204916134U CN201520680051.3U CN201520680051U CN204916134U CN 204916134 U CN204916134 U CN 204916134U CN 201520680051 U CN201520680051 U CN 201520680051U CN 204916134 U CN204916134 U CN 204916134U
- Authority
- CN
- China
- Prior art keywords
- blade
- paddle
- cross
- compensation block
- multiple spot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an anti ring screw of multiple spot compensation, the page or leaf profile of surface of paddle is including the root, along with limit, guide margin and blade tip the paddle be provided with the cross section for right angled triangle compensation piece along with limit position department, the compensation piece sets gradually in radial 0.5 times, 0.6 times, 0.7 times on screw and 0.8 times of position department, the long right -angle side of compensation piece cross section and the blade back of paddle is parallel to each other, the hypotenuse laminating of compensation piece cross section is in on the blade surface of paddle, the short right -angle side of compensation piece cross section and being parallel to each other just on the coplanar along with the limit of paddle. The utility model discloses a changing the paddle and following the thick linear degressive characteristic of limit leaf, change the vibration frequency of paddle, the singly vibration frequency of a paddle that staggers avoids the peak -to -peak to superpose, restraines the emergence of ring sound, and then the reduction noise, the life of old oar can be prolonged effectively, the influence of unfavorable factors such as cavitation effect surge is avoided simultaneously.
Description
Technical field
The utility model belongs to propeller for watercraft technical field, particularly relates to a kind of multiple spot and compensates anti-ring screw propeller.
Background technology
The running of aircraft, steamer be unable to do without their propelling unit---screw propeller, screw propeller depends on blade to rotate in air or water, and be the device of propulsive force by turn of engine power conversion, screw propeller is divided into a variety of, application is also very extensive, is divided into fixed pitch propeller and the large class of nonuniform pitch propeller two.
Wherein, marine propeller is made up of hub and 2 to 6 blades, and number of blade is more, and the vibrations of oar are less, and the one side backward of leaf is helical surface or a kind of ship propeller being similar to helical surface.Blade transversal surface is airfoil, guide margin is different with lagging edge section thickness, so water is cut on both sides different hydraulic performances, but blade can produce vibration along with self rotates during screw propeller running, when the vibration of each blade occurs that peak-to-peak superposes, easily screw propeller is produced and damage and huge noise can be produced, thus reduce the service life of screw propeller.
Summary of the invention
In view of this, the characteristic of the thick linear decrease of the utility model foundation blade lagging edge leaf proposes a kind of multiple spot and compensates anti-ring screw propeller, during to solve current propeller for vessels owing to operating, blade can produce vibration along with self rotates, when especially there is the situation that peak-to-peak superposes, cause screw propeller damage and huge noise can be produced, thus reduce the technical matters in the service life of screw propeller.
The technical scheme adopted: described multiple spot compensates anti-ring screw propeller and comprises blade, the page profile of described blade includes root, lagging edge, guide margin and blade tip, wherein, the lagging edge position of described blade is provided with compensation block, described compensation block is successively set on 0.5 times of propeller radius, 0.6 times, 0.7 times and 0.8 times of position, the cross-sectional plane of described compensation block is right-angled triangle, the long square edge of described compensation block cross-sectional plane and the blade back of described blade are parallel to each other, the hypotenuse of described compensation block cross-sectional plane is fitted on the blade face of described blade, the short square edge of described compensation block cross-sectional plane and the lagging edge of described blade are parallel to each other and at grade.
As preferably, for promoting compensation effect and reducing noise further, the length value of the short square edge of described compensation block cross-sectional plane is between the minimum value and the maxim of described blade thickness of described blade thickness.
Further, described a kind of multiple spot compensates anti-ring screw propeller and also comprises slurry hub, and the root of described blade is fixedly connected with described slurry hub, and described slurry hub is rotated by the driven by motor of boats and ships, thus drive blade to rotate, thus in water, produce axial force to promote ship's navigation.
The utility model advantage compared with prior art: the utility model is by changing the characteristic of the thick linear decrease of blade lagging edge leaf, change the oscillation frequency of blade, the oscillation frequency of the single paddle that staggers, avoids peak-to-peak to superpose, suppress the generation of ring sound, and then reduce noise.Especially be verified in obsolete vessel transformation and screw propeller are repaired, effectively can extend the service life of old oar, can avoid using prior art such as service life of bringing screw propeller to shorten, the impact of the unfavorable factor such as cavitation effect surge.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of multiple spot of the utility model compensates anti-ring screw propeller;
Fig. 2 be the utility model compensation block and blade with the use of cutaway view.
Detailed description of the invention
The following description and drawings illustrate specific embodiment of the invention scheme fully, to enable those skilled in the art to put into practice them.Other embodiments can comprise structure, logic, electric, process and other change.Embodiment only represents possible change.Unless explicitly requested, otherwise independent parts and function are optional, and the order of operation can change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.
As shown in Fig. 1 to 2, provide a kind of multiple spot to compensate anti-ring screw propeller, comprise slurry hub 1 and the blade 2 being arranged on described slurry hub 1 surface, described slurry hub 1 is cylinder, rotated by the driven by motor of boats and ships, thus drive described blade 2 to choose in water, produce axial force thus propelling ship.The page profile of described blade 2 comprises the root 21, lagging edge 22, guide margin 23 and the blade tip 24 that are fixedly connected with described wheel hub 1, and during screw propeller positive rotation, described guide margin 23 first contacts with water.General, lagging edge 22 leaf of described blade 2 is thick linearly to successively decrease, and compensation block 3 is arranged on described lagging edge 22 position to compensate the variation in thickness of blade 2, thus changes the oscillation frequency of blade 2.Be propeller radius at 0.5 times, 0.6 times, 0.7 times of propeller radius and 0.8 times of position R be provided with in described compensation block 3, Fig. 1.
The cross-sectional plane of described compensation block 3 is right-angled triangle, the crisperding of described compensation block 3 cross-sectional plane, i.e. short square edge, aligns with described lagging edge 22 and be parallel to each other, namely at grade.The described hypotenuse of compensation block 2 cross-sectional plane and the blade face of described blade 2 fit, the stock limit of described compensation block 2 cross-sectional plane, i.e. long square edge, is parallel to each other with the blade back of described blade 2, thus compensate for the variation in thickness of blade 2.For improving compensation effect, namely the oscillation frequency of blade is better changed, thus the oscillation frequency of the single paddle that staggers, the length value of the short square edge of described compensation block 3 cross-sectional plane is between the minimum value and the maxim of described blade 2 thickness of described blade 2 thickness, namely the length of the short square edge of described compensation block 3 cross-sectional plane is greater than the minimum value of described blade 2 thickness, and is less than the maxim of described blade 2 thickness.
Thus, after blade 2 thickness is compensated, the phenomenon that can effectively avoid peak-to-peak to superpose, thus suppress the generation of ring sound, and then reduction noise, effectively can extend the service life of old oar, can avoid using prior art such as service life of bringing screw propeller to shorten, the impact of the unfavorable factor such as cavitation effect surge.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present utility model and principle under the change made; modify; substitute, combination, simplify; all should be the substitute mode of equivalence, all should be included in protection domain of the present utility model.
Claims (3)
1. a multiple spot compensates anti-ring screw propeller, comprise blade (2), the page profile of described blade (2) includes root (21), lagging edge (22), guide margin (23) and blade tip (24), it is characterized in that, lagging edge (22) position of described blade (2) is provided with compensation block (3), described compensation block (3) is successively set on 0.5 times of propeller radius, 0.6 times, 0.7 times and 0.8 times of position, the cross-sectional plane of described compensation block (3) is right-angled triangle, the long square edge of described compensation block (3) cross-sectional plane and the blade back of described blade (2) are parallel to each other, the hypotenuse of described compensation block (3) cross-sectional plane is fitted on the blade face of described blade (2), the short square edge of described compensation block (3) cross-sectional plane and the lagging edge (22) of described blade (2) are parallel to each other and at grade.
2. a kind of multiple spot according to claim 1 compensates anti-ring screw propeller, it is characterized in that, the length value of the short square edge of described compensation block (3) cross-sectional plane is positioned between the minimum value of described blade (2) thickness and the maxim of described blade (2) thickness.
3. a kind of multiple spot according to claim 1 compensates anti-ring screw propeller, it is characterized in that, also comprise slurry hub (1), the root (21) of described blade (2) is fixedly connected with described slurry hub (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520680051.3U CN204916134U (en) | 2015-09-06 | 2015-09-06 | Anti ring screw of multiple spot compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520680051.3U CN204916134U (en) | 2015-09-06 | 2015-09-06 | Anti ring screw of multiple spot compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204916134U true CN204916134U (en) | 2015-12-30 |
Family
ID=54965289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520680051.3U Expired - Fee Related CN204916134U (en) | 2015-09-06 | 2015-09-06 | Anti ring screw of multiple spot compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204916134U (en) |
-
2015
- 2015-09-06 CN CN201520680051.3U patent/CN204916134U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108891569B (en) | Marine sail with variable airfoil profile | |
| CN103342162A (en) | Front half guide wheel | |
| CN103332281A (en) | Pre-rotation triangular conduit for right-handed rotation single screw vessel | |
| CN205186502U (en) | Energy -conserving distortion rudder | |
| CN105035289A (en) | Full-revolution series duct type marine propeller | |
| CN203268307U (en) | Large-scale propellor | |
| CN204916134U (en) | Anti ring screw of multiple spot compensation | |
| EP2935870A1 (en) | Turbine blade | |
| CN203612187U (en) | Propeller for ship | |
| CN219948533U (en) | Marine propulsion structure with twisted fins | |
| CN105438424A (en) | Energy-saving marine propeller with tip folding wing | |
| CN102673758A (en) | Propeller with convex and concave guide edge | |
| CN202046435U (en) | 72.6m electrically propelled ship | |
| CN204415700U (en) | A kind of fast steamer electric propulsion apparatus | |
| CN210455161U (en) | Multistage propeller ship propulsion device | |
| CN203832735U (en) | Fixed pitch propeller for variable trim ship | |
| CN203854849U (en) | Improved movable-web paddle wheel set propeller | |
| CN103612733B (en) | Radial turbulence preventing propeller for vessels | |
| CN201694378U (en) | Propeller with water turbine | |
| KR102647301B1 (en) | Movable type pre-swirl stator | |
| CN204775950U (en) | Big big disk ratio constant pitch airscrew of rake | |
| CN202717022U (en) | Leading edge concave-convex propeller | |
| CN111319743A (en) | Propeller for efficient navigation and force application pushing method | |
| CN202574600U (en) | Double-vane propeller | |
| CN201951706U (en) | Efficient rudder |
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: 20151230 Termination date: 20170906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |