CN203473229U - Kamsarmax bulk carrier with propeller containing energy-saving conduit - Google Patents
Kamsarmax bulk carrier with propeller containing energy-saving conduit Download PDFInfo
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- CN203473229U CN203473229U CN201320354231.3U CN201320354231U CN203473229U CN 203473229 U CN203473229 U CN 203473229U CN 201320354231 U CN201320354231 U CN 201320354231U CN 203473229 U CN203473229 U CN 203473229U
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- 238000004134 energy conservation Methods 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 206010020880 Hypertrophy Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a Kamsarmax bulk carrier with a propeller containing an energy-saving conduit. The middle part on the front side of the propeller is provided with a horn-shaped conduit with a larger front part and a smaller back part; a cross section of the conduit is a transition structure of a rectangular middle part and two arc-shaped sides; the width of the horn-shaped conduit is larger than the width of the propeller; and in a preferential method, an axial section of a conduit wall is wing-shaped. With the addition of an energy- saving compensating conduit on a bulky ship, beneficial effects are achieved in the following three aspects that first, propelling efficiency is improved and energy conservation is achieved by 5% to 8%; second, vibration of stern is reduced, thereby improving work and living conditions of sailors; and third in a common rudder steering range, steerage can be obviously increased.
Description
Technical field
The present invention relates to ship building technical field, more particularly, relate to the construction of Kamsar type bulge carrier.
Background technology
Kamsar type bulge carrier belongs to the freighter of line style hypertrophy.Freighter for this line style hypertrophy, the current that enter ship stern propeller disk place are extremely inhomogeneous and unstable, thereby cause the circumferential wake in propeller disk place inhomogeneous, affected rotation efficiency and the hull efficiency of hull, thereby the overall propulsive efficiency of boats and ships is declined.
The ship design of prior art routine as illustrated in fig. 1 and 2, is not considered additional device, before screw propeller, without attached body, only considers the fairing of boats and ships afterbody molded line.
Summary of the invention
The present invention, by energy-conservation conduit is installed before propeller for vessels, improves stern wake field distribution, improves propulsion coefficient, thereby reaches under the prerequisite of same host power, improves the object of the speed of a ship or plane.
In order to achieve the above object; a kind of screw propeller of the present invention arranges the Kamsar type bulge carrier of energy-conservation conduit, it is characterized in that: 10% diameter of propeller altitude range arranges the conduit of pre-large post-small broadening formation to below to be positioned at 0.002 to 0.02 times of screw propeller front side captain's scope, stern ball journal line top, 50% diameter of propeller; Described conduit cross section is middle part rectangle both sides semi-round structure, the broadening formation maximum width of described conduit is diameter of propeller 0.8 to 0.95 times, the ratio of described semi-round diameter and diameter of propeller is between 0.3 to 0.55.
Under optimal way, described duct wall be front thick rear thin or even thickness broadening formation, front end wall thickness is 1 times to 25 times of rear end wall thickness.
The present invention is installed energy-saving compensated conduit additional by the boats and ships in loose type, has following three aspects: effect.In addition, the axial section of duct wall is airfoil type section.
(1) improve propulsion coefficient, reach energy-saving effect, generally can save energy 5%～8%.
(2) reduce the vibration of ship stern, improve crewman's Life and job condition.
(3) improve steerage, within the scope of conventional steering, steerage should obviously improve.
Accompanying drawing explanation
Fig. 1 is the layout schematic side view of boats and ships afterbody in prior art.
Fig. 2 is the layout schematic rear view of boats and ships afterbody in prior art.
Fig. 3 is that the energy-conservation conduit of the present invention is arranged principle schematic side view.
Fig. 4 is that the energy-conservation conduit of the present invention is arranged principle schematic rear view.
Fig. 5 is that the energy-conservation conduit of the present invention is arranged side-looking size positions schematic diagram.
Fig. 6 is that the energy-conservation conduit of the present invention is arranged backsight size positions schematic diagram.
The specific embodiment
The present invention arranges tubular conduit before screw propeller, can effectively improve afterbody flow field, improves propeller efficiency.As shown in Figure 3 and Figure 4, the energy-saving compensated conduit 1 of hull of the present invention is that a point diameter is large, the trumpet type semicircle conduit that rear end diameter is little, when it is installed on the hull left and right sides of screw propeller front upper place, can make the current that enter propeller disk place first flow through conduit, because conduit is pre-large post-small trumpet type, it has accelerated the current on screw propeller top, make the current at whole propeller disk place become all even stable, therefore can improve the total propulsion coefficient of screw propeller.Meanwhile, because the section shape of conduit can be made airfoil type section, after flowing through, current can also produce an additional thrust.
And the Main Function of conduit is to improve ship stern flow, reduce flow separation, improve screw propeller influent stream, meanwhile, before oar, produce the preswirl contrary with screw propeller rotation direction, thereby improved propulsion coefficient.Under the constant condition of main engine power, can improve the speed of a ship or plane; And when boats and ships keep the former speed of a ship or plane, can reach the effect that reduces main engine power, saving fuel consumption.
The concrete installation site of conduit as illustrated in Figures 5 and 6, be positioned at 0.002 to 0.02 times of screw propeller front side captain's scope, stern ball journal line top 50% diameter of propeller to below 10% diameter of propeller altitude range; Wherein, conduit cross section is middle part rectangle both sides semi-round O-shaped structure, the shape of the mouth as one speaks maximum width of described conduit is diameter of propeller 0.8 to 0.95 times, the ratio of semi-round diameter and diameter of propeller is between 0.3 to 0.55.In figure:
L is captain,
l
1/L≥0.002，l
2/L≤0.02
h1/D≤0.1，h2/D≤0.5，
0.8≤w/D≤0.95，
0.3≤d/D≤0.55。
In addition, duct wall be front thick rear thin or even thickness megaphone-shaped, front end wall thickness is 1 times to 25 times of rear end wall thickness, as shown in Figure 5,1≤t2/t1≤25.
The above; it is only the preferably specific embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; according to technical scheme of the present invention and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection scope of the present invention.
Claims (2)
1. screw propeller arranges a Kamsar type bulge carrier for energy-conservation conduit, it is characterized in that: 10% diameter of propeller altitude range arranges the conduit of pre-large post-small broadening formation to below to be positioned at 0.002 to 0.02 times of screw propeller front side captain's scope, stern ball journal line top, 50% diameter of propeller; Described conduit cross section is middle part rectangle both sides semi-round structure, the broadening formation maximum width of described conduit is diameter of propeller 0.8 to 0.95 times, the ratio of described semi-round diameter and diameter of propeller is between 0.3 to 0.55.
2. screw propeller arranges the Kamsar type bulge carrier of energy-conservation conduit according to claim 1, it is characterized in that, described duct wall is the broadening formation of front thick rear thin or even thickness, and front end wall thickness is 1 times to 25 times of rear end wall thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320354231.3U CN203473229U (en) | 2013-06-19 | 2013-06-19 | Kamsarmax bulk carrier with propeller containing energy-saving conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320354231.3U CN203473229U (en) | 2013-06-19 | 2013-06-19 | Kamsarmax bulk carrier with propeller containing energy-saving conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203473229U true CN203473229U (en) | 2014-03-12 |
Family
ID=50221611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320354231.3U Expired - Lifetime CN203473229U (en) | 2013-06-19 | 2013-06-19 | Kamsarmax bulk carrier with propeller containing energy-saving conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203473229U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128404A (en) * | 2017-12-11 | 2018-06-08 | 中国船舶工业集团公司第七0八研究所 | One kind is used for the pinpoint experimental rig of paddle precompensation conduit and installation method |
| JP2019200752A (en) * | 2018-05-18 | 2019-11-21 | 国立研究開発法人 海上・港湾・航空技術研究所 | Wake flow field design method, wake flow field design system, and ship considering wake flow field |
-
2013
- 2013-06-19 CN CN201320354231.3U patent/CN203473229U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128404A (en) * | 2017-12-11 | 2018-06-08 | 中国船舶工业集团公司第七0八研究所 | One kind is used for the pinpoint experimental rig of paddle precompensation conduit and installation method |
| CN108128404B (en) * | 2017-12-11 | 2019-03-22 | 中国船舶工业集团公司第七0八研究所 | A test device and installation method for accurate positioning of propeller front compensation duct |
| JP2019200752A (en) * | 2018-05-18 | 2019-11-21 | 国立研究開発法人 海上・港湾・航空技術研究所 | Wake flow field design method, wake flow field design system, and ship considering wake flow field |
| JP7178077B2 (en) | 2018-05-18 | 2022-11-25 | 国立研究開発法人 海上・港湾・航空技術研究所 | Wake field design method, wake field design system, and ship considering wake field |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |