CN202345902U - Deadwood structure of ship - Google Patents
Deadwood structure of ship Download PDFInfo
- Publication number
- CN202345902U CN202345902U CN 201120441275 CN201120441275U CN202345902U CN 202345902 U CN202345902 U CN 202345902U CN 201120441275 CN201120441275 CN 201120441275 CN 201120441275 U CN201120441275 U CN 201120441275U CN 202345902 U CN202345902 U CN 202345902U
- Authority
- CN
- China
- Prior art keywords
- deadwood
- propeller
- ship
- screw propeller
- navigation
- 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
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Abstract
The utility model discloses a deadwood structure of a ship. A deadwood is fixedly arranged on a ship body at the tail part of the ship and below a propeller; the end part of the deadwood is provided with a slope facing to one side of the ship body; and the inclining direction of the slope ensures that the incoming flow of the propeller can generate a prewhirl with the direction opposite to that of an outgoing flow of the propeller on the slope. The incoming flow of the propeller can generate a reversed prewhirl on the slope at the end part of the deadwood so that the propeller spinning quantity in a flow field at the back of the propeller can be reduced, the idle work of the propeller can be reduced, the propelling efficiency of the propeller can be increased, and therefore, the energy consumption is reduced. The increment of navigation energy consumption caused by the increment of wet surface area caused by arranging the deadwood is partially or completely offset. The stability in navigation of the ship is improved, and meanwhile, adverse effects caused by navigation power consumption can be reduced, so that the navigation performance of the ship is better.
Description
Technical field
The utility model relates to the deadwood structure in order to raising ship's navigation stability that install the stern bottom.
Background technology
At present; Some boats and ships can the stern place, the hull center, below of screw propeller is provided with the deadwood of a symmetry, has increased lateral projection's area of boats and ships through deadwood; Make the middle mind-set stern skew of boats and ships lateral projection area, thereby can improve the stability of ship's navigation.Yet, also increase the wetted surface area of hull when setting up deadwood, thereby also just increased the resistance of ship's navigation, improved the energy consumption of ship's navigation, not environmental protection.
Summary of the invention
The utility model be intended to provide a kind of can be in the stability that improves ship's navigation,, environmental-protecting performance better boats and ships deadwood structure less relatively to the energy consumption increase of ship's navigation.
The described boats and ships deadwood of the utility model structure; Deadwood is fixedly mounted on the hull of boats and ships afterbody, screw propeller below; Said deadwood end is provided with towards the inclined-plane of hull one side, said inclined-plane direction of tilt make the screw propeller incoming flow can on the inclined-plane, produce one with screw propeller go to flow rightabout prewhirling.
The described boats and ships deadwood of the utility model structure, there is the bevelled inclined-plane end of deadwood, the incoming flow of screw propeller can on this inclined-plane, produce one with screw propeller go to flow oppositely directed prewhirling; Reciprocal prewhirling can be reduced the oar amount of revolving in flow field behind the screw propeller, reduces the idle work of screw propeller, thereby improves the propulsion coefficient of screw propeller, reduces energy consumption.It can be part or all of the running resistance that increases because of the boats and ships wetted surface area that deadwood is set causes of the counteracting increase that brought the navigation energy consumption.It can reduce wetted surface and increase the energy consumption increase that ship's navigation is brought when improving ship's navigation stability, also makes the environmental-protecting performance of boats and ships more excellent.
Description of drawings
Fig. 1 is a kind of structural representation of boats and ships deadwood;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 installs the upward view at deadwood place for hull.
The specific embodiment
A kind of boats and ships deadwood structure; Like Fig. 1, like Fig. 2; Deadwood 1 is arranged on the middle part of the hull of boats and ships afterbody 2, screw propeller 3 belows; Its line of centers is consistent with the axis of hull, and the end of deadwood is provided with towards the inclined-plane 4 of hull one side, the direction of tilt on inclined-plane make the screw propeller incoming flow can on the inclined-plane, produce one with screw propeller go to flow rightabout prewhirling.If screw propeller is dextrorotation, then the inclined-plane is tilted to the left; If screw propeller is left-handed, then the inclined-plane is tilted to the right.During screw propeller dextrorotation; The release of screw propeller go to flow to right rotation, the deadwood end chamfer is tilted to the left, the screw propeller incoming flow can produce prewhirling left on the inclined-plane; What itself and screw propeller were released goes flow path direction opposite; It has reduced the radially kinetic energy that flows behind the screw propeller, thereby has reduced the idle work of screw propeller, improves the propulsion coefficient of screw propeller.Equally; When screw propeller is left-handed, the release of screw propeller go to flow to anticlockwise, the deadwood end chamfer is tilted to the right; The screw propeller incoming flow can produce prewhirling to the right on the inclined-plane; What itself and screw propeller were released goes flow path direction opposite, can reduce the idle work of screw propeller, improves the propulsion coefficient of screw propeller.
The tilt angle theta of said deadwood preferably can be controlled at 2
OTo 32
0Between, the angle of inclination is too small, and what deadwood produced prewhirls very little DeGrain; The angle of inclination is excessive, and the resistance that deadwood produces is excessive again.In above-mentioned range of tilt angles again with 15
O-19
OHave better effect.
The line of centers of deadwood preferably can be to the skew of the outside of hull, and like Fig. 3, there are a little side-play amount D in itself and hull centreline space.The deadwood behind the certain distance that squinted, the inclined-plane of its end can better produce with screw propeller is released and go to flow oppositely directed prewhirling, and can better reduce the oar amount of revolving in flow field behind the screw propeller, further reduce the idle work and the propulsion coefficient that improves screw propeller of screw propeller.
The side-play amount D of said deadwood line of centers and hull line of centers is preferably between 0-1 meter.
Claims (5)
1. boats and ships deadwood structure; Deadwood is fixedly mounted on the hull of boats and ships afterbody, screw propeller below; Said deadwood end is provided with towards the inclined-plane of hull one side, said inclined-plane direction of tilt make the screw propeller incoming flow can on the inclined-plane, produce one with screw propeller go to flow rightabout prewhirling.
2. boats and ships deadwood structure according to claim 1 is characterized in that: the angle of inclination on inclined-plane is 2
OTo 32
0Between.
3. boats and ships deadwood structure according to claim 2 is characterized in that: the angle of inclination on inclined-plane is 15
OTo 19
0Between.
4. according to any one described boats and ships deadwood structure in the claim 1 to 3, it is characterized in that: the line of centers of deadwood is to the skew of the outside of hull.
5. boats and ships deadwood structure according to claim 4 is characterized in that: the distance of the disalignment hull line of centers of deadwood is a 0-1 rice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120441275 CN202345902U (en) | 2011-11-09 | 2011-11-09 | Deadwood structure of ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120441275 CN202345902U (en) | 2011-11-09 | 2011-11-09 | Deadwood structure of ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202345902U true CN202345902U (en) | 2012-07-25 |
Family
ID=46534923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120441275 Expired - Lifetime CN202345902U (en) | 2011-11-09 | 2011-11-09 | Deadwood structure of ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202345902U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501957A (en) * | 2011-11-09 | 2012-06-20 | 广州广船国际股份有限公司 | Tuck plate structure of ship |
| CN112429144A (en) * | 2020-12-01 | 2021-03-02 | 江南造船(集团)有限责任公司 | Air guide sleeve for improving dead-wood rear flow field of high-speed ship and installation method thereof |
-
2011
- 2011-11-09 CN CN 201120441275 patent/CN202345902U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501957A (en) * | 2011-11-09 | 2012-06-20 | 广州广船国际股份有限公司 | Tuck plate structure of ship |
| CN112429144A (en) * | 2020-12-01 | 2021-03-02 | 江南造船(集团)有限责任公司 | Air guide sleeve for improving dead-wood rear flow field of high-speed ship and installation method thereof |
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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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510382 Guangzhou, Guangdong Province, south of Fangcun Avenue, No. 40 Patentee after: CSSC OFFSHORE & MARINE ENGINEERING (Group) Co.,Ltd. Address before: 510382 Guangzhou, Guangdong Province, south of Fangcun Avenue, No. 40 Patentee before: GUANGZHOU SHIPYARD INTERNATIONAL Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20160115 Address after: 511462 Nansha District, Guangzhou, Pearl River Management District, West Road, No., the first floor of the layer on the ground floor, No. 68 Patentee after: Guangzhou Shipyard International Co.,Ltd. Address before: 510382 Guangzhou, Guangdong Province, south of Fangcun Avenue, No. 40 Patentee before: CSSC OFFSHORE & MARINE ENGINEERING (Group) Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
|
| CX01 | Expiry of patent term |