CN203832735U - Fixed pitch propeller for variable trim ship - Google Patents
Fixed pitch propeller for variable trim ship Download PDFInfo
- Publication number
- CN203832735U CN203832735U CN201320856785.3U CN201320856785U CN203832735U CN 203832735 U CN203832735 U CN 203832735U CN 201320856785 U CN201320856785 U CN 201320856785U CN 203832735 U CN203832735 U CN 203832735U
- Authority
- CN
- China
- Prior art keywords
- blade
- fixed pitch
- ship
- propeller
- trim
- 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 - Lifetime
Links
- 238000005452 bending Methods 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000001141 propulsive effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A fixed pitch propeller for a variable trim ship comprises a propeller hub and a fixed pitch blade. The fixed pitch blade longitudinally inclines from the root to the tip in the radial direction, is bent towards the stern and then inclines towards the ship bow gradually, and the root of the fixed pitch blade is connected with the propeller hub. The fixed pitch propeller for the variable trim ship can improve blade offloading capacity, propulsive efficiency and pressure resistance, and the service life of the fixed pitch propeller for the variable trim ship is prolonged.
Description
Technical field
The utility model belongs to marine propuision system field, relates in particular to a kind of fixed pitch propeller peculiar to vessel.
Background technology
The blade trim of traditional collection of illustrative plates screw propeller is all to fix an angle to ship stern direction to tilt, and is defined as in the world BI screw propeller; When screw propeller rotary work, because blade tip can produce the cause in tip whirlpool, adopt BI pattern, can reduce tip whirlpool and bring out the disturbance force of hull, avoid the potential safety hazard of bringing due to vibration.But hypsokinesis distributes and can exert an influence to the distribution of pressure of blade blade face and blade back, and blade hypsokinesis meeting reduces the off loading capacity of blade, reduces the propulsion coefficient of screw propeller, reduces the compressive strength of propeller blade, thereby affect screw propeller service life.
Summary of the invention
Poor in order to overcome the off loading capacity of existing marine propeller, propulsion coefficient is lower, compressive strength is lower, the short deficiency in service life of screw propeller, the utility model provides a kind of change trim fixed pitch propeller peculiar to vessel that promotes blade off loading capacity, improves propulsion coefficient, increases pressure resistance, increases the service life.
The utility model solves the technical scheme that its technical matters adopts:
A kind of become that trim is peculiar to vessel determines square screw propeller, comprise that Luo revolves Jiang Jiang Grains and constant pitch blade, the rake of the constant pitch blade of stating is first tilted to stem direction to the bending of ship stern direction to the radial distribution of blade tip more gradually by blade root, and the blade root of described constant pitch blade is revolved Jiang Jiang Grains with Luo and is connected.
The beneficial effects of the utility model are mainly manifested in: adopt the distribution that becomes trim, blade root to the radial distribution of blade tip is first to tilt to stem direction gradually to the bending of ship stern direction again, can ensure like this blade tip and hull distance, effectively control tip whirlpool and bring out the disturbance force of hull; Become trim distribution pattern, can improve the blade distribution of pressure of blade face and blade back in rotary course in inhomogeneous Wake Field on the quarter, improve the propulsion coefficient of screw propeller; The stress direction that the centnifugal force that the distribution of change trim causes can make screw propeller rotation time produces on blade tangent plane is contrary with the stress direction that blade thrust produces, can offset the stress that a part of blade thrust produces on tangent plane, effectively alleviate and unloading blade face pressure, promote the pressure resistance of blade, improve blade intensity, reduce tangent plane thickness, effectively reduce screw propeller overall weight, extend the service life of screw propeller.
Brief description of the drawings
Fig. 1 is the schematic diagram that becomes trim fixed pitch propeller peculiar to vessel.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
With reference to Fig. 1, a kind of become that trim is peculiar to vessel determines square screw propeller, comprise that Luo revolves Jiang Jiang Grains 1 and constant pitch blade 2, the rake of described constant pitch blade 2 is first tilted to stem direction to the bending of ship stern direction to the radial distribution of blade tip more gradually by blade root, and the blade root of described constant pitch blade 2 is revolved Jiang Jiang Grains 1 with Luo and is connected.
The screw propeller of the present embodiment, adopts and becomes the distribution of trim 3, blade root to the radial distribution of blade tip be first to the bending of ship stern direction more gradually to the inclination of stem direction, can ensure like this blade tip and hull distance, effectively control tip whirlpool and bring out the disturbance force of hull; Become trim distribution pattern, can improve the blade distribution of pressure of blade face and blade back in rotary course in inhomogeneous Wake Field on the quarter, improve the propulsion coefficient of screw propeller; The stress direction that the centnifugal force that the distribution of change trim causes can make screw propeller rotation time produces on blade tangent plane is contrary with the stress direction that blade thrust produces, and can offset the stress that a part of blade thrust produces on tangent plane.
Claims (1)
1. one kind becomes that trim is peculiar to vessel determines square screw propeller, comprise that Luo revolves Jiang Jiang Grains and constant pitch blade, it is characterized in that: the rake of described constant pitch blade is first tilted to stem direction to the bending of ship stern direction to the radial distribution of blade tip more gradually by blade root, and the blade root of described constant pitch blade is revolved Jiang Jiang Grains with Luo and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320856785.3U CN203832735U (en) | 2013-12-23 | 2013-12-23 | Fixed pitch propeller for variable trim ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320856785.3U CN203832735U (en) | 2013-12-23 | 2013-12-23 | Fixed pitch propeller for variable trim ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203832735U true CN203832735U (en) | 2014-09-17 |
Family
ID=51510610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320856785.3U Expired - Lifetime CN203832735U (en) | 2013-12-23 | 2013-12-23 | Fixed pitch propeller for variable trim ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203832735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352008A (en) * | 2016-09-19 | 2017-11-17 | 北车船舶与海洋工程发展有限公司 | A kind of pull-type constant pitch airscrew of new gondola |
-
2013
- 2013-12-23 CN CN201320856785.3U patent/CN203832735U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352008A (en) * | 2016-09-19 | 2017-11-17 | 北车船舶与海洋工程发展有限公司 | A kind of pull-type constant pitch airscrew of new gondola |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160126 Address after: 312031, Zhejiang Province, Keqiao District, Shaoxing province rock street, Yu Zhu Industrial Zone Patentee after: SANLUX Co.,Ltd. Address before: 321200, Zhejiang, Jinhua province Wuyi County Huanglong Industrial Function Zone, Ying Xiang Road, No. 15 Patentee before: Zhejiang Helicetude Marine Machinery Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |