CN202670083U - Efficient guide pipe screw propeller - Google Patents
Efficient guide pipe screw propeller Download PDFInfo
- Publication number
- CN202670083U CN202670083U CN 201220292191 CN201220292191U CN202670083U CN 202670083 U CN202670083 U CN 202670083U CN 201220292191 CN201220292191 CN 201220292191 CN 201220292191 U CN201220292191 U CN 201220292191U CN 202670083 U CN202670083 U CN 202670083U
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- CN
- China
- Prior art keywords
- guide pipe
- screw propeller
- efficient
- groove
- propeller
- 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
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Abstract
The utility model relates to an efficient guide pipe screw propeller, comprising a guide pipe and paddles. The efficient guide pipe screw propeller is characterized in that the inner surface of the guide pipe is provided with a groove; and the position of the groove corresponds to the peripheral position of the ends of the paddles. Compared with the existing guide pipe screw propeller, a gap between the end of the paddles and the inner wall of the guide pipe is increased and the groove with a certain slope degree is arranged, so that the possibility of clamping impurities between the guide pipe and the paddle is reduced and the propulsive force of the screw propeller is increased; and therefore, the working efficiency of the screw propeller is improved.
Description
Technical field
The utility model relates to ship domain, particularly a kind of shrouded propeller.
Background technology
Shrouded propeller is a kind of driving tool of boats and ships, refers to add around the screw propeller mozzle, namely at the sleeve of a circle of common screw propeller peripheral equipment, and sleeve relatively simple for structure, it can be fixed, and is called A/C; Also can rotate, be called steering nozzle.Wherein steering nozzle also plays a part rudder except playing guide functions.Conduit divides two classes, and a class conduit accelerates the current at screw propeller place, claims acceleration duct.Acceleration duct can increase the efficient of heavily loaded screw propeller, and conduit itself produces positive thrust.At present, acceleration duct has been widely used on tugboat, push boat, the trawlboat; Another kind of conduit slows down the current at screw propeller place, is called decelerating duct.The conduit of deceleration current is for increasing the static pressure that acts on the screw blade, and conduit will produce a negative thrust, can put off the cavity limit of screw propeller, and reduces the noise of blade tip harassing and wrecking, mostly is Military Ship and adopts.
Shrouded propeller is compared common screw propeller, and advantage is to utilize the mozzle effect, can increase by 30% to 35% thrust, to satisfy the needs of navigation.Be mainly used in to increase thrust on some tugboats, push boat and the cargo ship.At present, shrouded propeller mainly contains following major defect: the gap of pipe inner wall and propeller blade tip is very little, and the pasture and water foreign material easily snap in; If deformation of guide tube is arranged, blade tip and pipe inner wall bump against, and can affect the normal navigation of boats and ships.
The utility model content
The utility model is studied and is improved for the shortcoming of above-mentioned shrouded propeller, and a kind of efficient shrouded propeller is provided, its relatively more existing shrouded propeller, and advantage is to prevent that foreign material from snapping in the conduit, and can improve the propulsive force of screw propeller.
In order to address the above problem, the utility model adopts following scheme:
A kind of efficient shrouded propeller comprises conduit and blade, it is characterized in that, the inside face of described conduit is provided with groove, and the position of described groove is corresponding to the peripheral position of described blade tip.
Further technical scheme is:
Described groove comprises fore-end and rear end part, has gradient between described fore-end and rear end part; The gradient of described fore-end is less than the gradient of rear end part; Described groove can comprise a plurality of.
Technique effect of the present utility model is:
The more existing shrouded propeller of the utility model, owing to having increased gap between blade tip and pipe inner wall, and the groove of certain slope is set, therefore reduced foreign material and snapped in possibility between conduit and blade, and increased the propulsive force of screw propeller, thereby improved the work efficiency of screw propeller.
Description of drawings
Fig. 1 is that master of the present utility model looks perspective view.
Fig. 2 is conduit cutaway view of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described further.
See Fig. 1, the utility model comprises conduit 1 and blade 2, it is characterized in that, the inside face of described conduit 1 is provided with groove 3, and the position of described groove 3 is corresponding to the peripheral position of the tip 4 of described blade 2.See Fig. 2, the groove 3 of conduit 1 comprises fore-end 31 and rear end part 30, fore-end 31 is near the miner diameter end 5 of conduit 1,30 of fore-end 31 and rear end parts have gradient, the gradient of fore-end 31 is beneficial to the discharge of foreign material and the propulsive force of increase screw propeller less than the gradient of rear end part 30; Groove 3 can comprise a plurality of, and its number is set according to the manufacturing cost of screw propeller and the load-carrying of boats and ships.
Claims (4)
1. an efficient shrouded propeller comprises conduit and blade, it is characterized in that, the inside face of described conduit is provided with groove, and the position of described groove is corresponding to the peripheral position of described blade tip.
2. according to efficient shrouded propeller claimed in claim 1, it is characterized in that described groove comprises fore-end and rear end part, has gradient between described fore-end and rear end part.
3. according to claim 1 or 2 described efficient shrouded propellers, it is characterized in that the gradient of described fore-end is less than the gradient of rear end part.
4. according to efficient shrouded propeller claimed in claim 1, it is characterized in that described groove can comprise a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292191 CN202670083U (en) | 2012-06-18 | 2012-06-18 | Efficient guide pipe screw propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292191 CN202670083U (en) | 2012-06-18 | 2012-06-18 | Efficient guide pipe screw propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202670083U true CN202670083U (en) | 2013-01-16 |
Family
ID=47491005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220292191 Expired - Fee Related CN202670083U (en) | 2012-06-18 | 2012-06-18 | Efficient guide pipe screw propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202670083U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773279A (en) * | 2015-04-17 | 2015-07-15 | 大连碧蓝节能环保科技有限公司 | Curved culvert type marine propeller |
| CN105109654A (en) * | 2015-08-03 | 2015-12-02 | 苏州金业船用机械厂 | High-performance ducted propeller |
| CN109070982A (en) * | 2016-03-29 | 2018-12-21 | 日本日联海洋株式会社 | The propulsion device of ship |
| CN114180020A (en) * | 2021-12-22 | 2022-03-15 | 欧振玉 | Marine ducted propeller |
-
2012
- 2012-06-18 CN CN 201220292191 patent/CN202670083U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773279A (en) * | 2015-04-17 | 2015-07-15 | 大连碧蓝节能环保科技有限公司 | Curved culvert type marine propeller |
| CN105109654A (en) * | 2015-08-03 | 2015-12-02 | 苏州金业船用机械厂 | High-performance ducted propeller |
| CN109070982A (en) * | 2016-03-29 | 2018-12-21 | 日本日联海洋株式会社 | The propulsion device of ship |
| CN114180020A (en) * | 2021-12-22 | 2022-03-15 | 欧振玉 | Marine ducted propeller |
| CN114180020B (en) * | 2021-12-22 | 2023-02-03 | 欧振玉 | Marine ducted propeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20130618 |