CN202890256U - Double-seam V-shaped net board of middle-layer trawl - Google Patents
Double-seam V-shaped net board of middle-layer trawl Download PDFInfo
- Publication number
- CN202890256U CN202890256U CN 201220519624 CN201220519624U CN202890256U CN 202890256 U CN202890256 U CN 202890256U CN 201220519624 CN201220519624 CN 201220519624 CN 201220519624 U CN201220519624 U CN 201220519624U CN 202890256 U CN202890256 U CN 202890256U
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- China
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- plate
- baffle upper
- upper plate
- guiding plate
- flow guiding
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- Expired - Fee Related
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Abstract
The utility model discloses a double-seam V-shaped net board of a middle-layer trawl. The double-seam V-shaped net board of the middle-layer trawl comprises a net board body. The net board body comprises a warp board, an upper panel and a lower panel, wherein the upper panel and the lower panel are symmetrically arranged on two sides of the warp board and share the same structure. The upper panel comprises a first upper flow guiding plate, a second upper flow guiding plate and a third upper flow guiding plate. An included angle between the first upper flow guiding plate and the warp board ranges from 80 degrees and 86 degrees. An included angle between the second upper flow guiding plate and the warp board ranges from 80 degrees and 86 degrees. A first seam for water to pass through is arranged between the first upper flow guiding plate and the second upper flow guiding plate. A second seam for water to pass through is arranged between the second upper flow guiding plate and the third upper flow guiding plate. The length-width ration of the net board body ranges from 1.4 to 1.6. The double-seam V-shaped net board of the middle-layer trawl can prevent an eddy zone from forming in operation, improves lifting force and reduces resisting force.
Description
Technical field
The utility model relates to the web plate that the expansion netting gear is used in the single boat trawl operation.
Background technology
Web plate generally is used for the trawling of big fishing vessel, is mainly used in expanding netting gear and plays a part settler, makes netting gear can be in certain water layer.
The mechanism of action and the wing of web plate are similar, the wing cardinal principle is that the air force that acts on the aircraft wing is decomposed into that vertical with parallel component, for web plate, mainly be acting on fluid dynamic on the web plate body, be decomposed into along the web plate direction of motion with perpendicular to the component of the web plate direction of motion.Web plate is vertical the use, and when motion, the angle of web plate and water (flow) direction is referred to as the angle of attack.
The problem that present traditional middle layer trawl web plate is often run in the use is, when the angle of attack of web plate is spent greater than 20, larger vortex just appears, when the web plate angle of attack is spent greater than 30, large stretch of vortex appears, seriously influenced the result of use of web plate, therefore be necessary web plate is improved.
Summary of the invention
For the deficiencies in the prior art, a kind of double slit V-type web plate of middle layer trawl is provided, can prevent that web plate from forming the vortex in running, improve lift, reduce resistance.
The utility model is achieved through the following technical solutions: the double slit V-type web plate of middle layer trawl, comprise the web plate body, described web plate body comprises top panel, lower panel and warp plate, described top panel is identical with lower panel structure and be symmetrical arranged about warp plate, described top panel comprises the first baffle upper plate that is arranged in parallel, the second baffle upper plate and the 3rd baffle upper plate, described the first baffle upper plate and warp plate angle are 80 ° ~ 86 °, form the first sealing that water supply stream passes through between described the first baffle upper plate and the second baffle upper plate, form the second sealing that water supply stream passes through between described the second baffle upper plate and the 3rd baffle upper plate, described web plate body aspect ratio is between 1.4 to 1.6.
In the technique scheme, in described the first sealing and the second sealing, be arranged at intervals with laterally extending gusset.
In the technique scheme, the curvature of described the first baffle upper plate, the second baffle upper plate and the 3rd baffle upper plate is 9.
The utility model compared with prior art has following beneficial effect: the design of double slit mouth can prevent that web plate from forming the vortex in running, improves lift, reduces resistance
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that Fig. 1 is along the cutaway view at A-A place.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the cross-sectional schematic of Weight plate 7.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail: referring to Fig. 1 to Fig. 3, the double slit V-type web plate of middle layer trawl, comprise web plate body 1, described web plate body 1 comprises top panel 2, lower panel 3 and warp plate 4, described top panel 2 is identical with lower panel 3 structures and about warp plate 4 V-shaped being symmetrical arranged, and meets hydrodynamics, can reduce the resistance that web plate runs into, guarantee that web plate keeps balance in moving under water, improves the stability of web plate.
Described top panel 2 comprises and roughly is the first baffle upper plate 20, the second baffle upper plate 21 and the 3rd baffle upper plate 22 that is arranged in parallel, the curvature of described the first baffle upper plate 20, the second baffle upper plate 21 and the 3rd baffle upper plate 22 is 9, and described the first baffle upper plate 20 is 80 ° ~ 86 ° with warp plate 4 angles.
21 of described the first baffle upper plate 20 and the second baffle upper plates form the first sealing 23 that water supply stream passes through, the second sealing 24 that 22 formation water supply of described the second baffle upper plate 21 and the 3rd baffle upper plate stream passes through is arranged at intervals with laterally extending gusset 5 in described the first sealing 23 and the second sealing 24, be convenient to increase the fastness of web plate deflector and the intensity of web plate.
Be fixed with Weight plate 7 at the web plate sidewall, referring to Fig. 4, the tangent plane of described Weight plate 7 is curved, and Weight plate 7 comprises fixed leg 71, dismountable the first plate body 72 and the second plate body 70 of being provided with at the two ends of described fixed leg 71.When dismounting the second plate body 70, the web plate overall weight reduces, and therefore can adjust web plate it is towed in higher water layer; When dismounting during the first plate body 72, the web plate overall weight descends, and current can produce larger lift when directly impacting fixed leg 71, with respect to dismounting the second plate body 70, and can be in higher water layer operation.
The aspect ratio of web plate body of the present utility model (web plate Breadth Maximum square with the ratio of web plate area) is 1, guarantees that it has good lift.
Web plate of the present utility model has higher board efficiency and stable preferably, by wind tunnel test, when the angle of attack is 20 °, only has minimum vortex, and when the angle of attack was 30 °, the vortex was still very little, when being 40 ° to the angle of attack, large stretch of vortex just occurred.
Claims (3)
1. the double slit V-type web plate of middle layer trawl, it is characterized in that: comprise web plate body (1), described web plate body (1) comprises top panel (2), lower panel (3) and warp plate (4), described top panel (2) is identical with lower panel (3) structure and be symmetrical arranged about warp plate (4), described top panel (2) comprises the first baffle upper plate (20) that the interval arranges, the second baffle upper plate (21) and the 3rd baffle upper plate (22), described the first baffle upper plate (20) is 80 ° ~ 86 ° with warp plate (4) angle, form the first sealing (23) that water supply stream passes through between described the first baffle upper plate (20) and the second baffle upper plate (21), form the second sealing (24) that water supply stream passes through between described the second baffle upper plate (21) and the 3rd baffle upper plate (22), described web plate body (1) aspect ratio is between 1.4 to 1.6.
2. the double slit V-type web plate of middle layer trawl according to claim 1 is characterized in that: be arranged at intervals with laterally extending gusset (5) in described the first sealing (23) and the second sealing (24).
3. the double slit V-type web plate of middle layer trawl according to claim 1, it is characterized in that: the curvature of described the first baffle upper plate (20), the second baffle upper plate (21) and the 3rd baffle upper plate (22) is 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519624 CN202890256U (en) | 2012-10-11 | 2012-10-11 | Double-seam V-shaped net board of middle-layer trawl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519624 CN202890256U (en) | 2012-10-11 | 2012-10-11 | Double-seam V-shaped net board of middle-layer trawl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202890256U true CN202890256U (en) | 2013-04-24 |
Family
ID=48111004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220519624 Expired - Fee Related CN202890256U (en) | 2012-10-11 | 2012-10-11 | Double-seam V-shaped net board of middle-layer trawl |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202890256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103271005A (en) * | 2013-06-13 | 2013-09-04 | 中国水产科学研究院东海水产研究所 | Small aspect ratio rectangular double-curved-surface surface and middle layer net plate |
-
2012
- 2012-10-11 CN CN 201220519624 patent/CN202890256U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103271005A (en) * | 2013-06-13 | 2013-09-04 | 中国水产科学研究院东海水产研究所 | Small aspect ratio rectangular double-curved-surface surface and middle layer net plate |
| CN103271005B (en) * | 2013-06-13 | 2014-07-30 | 中国水产科学研究院东海水产研究所 | Small aspect ratio rectangular double-curved-surface surface and middle layer net plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JESSN OCEAN EQUIPMENT CO., LTD. Free format text: FORMER NAME: JESSN OCEAN EQUIPMENT LTD. Owner name: JESSN OCEAN EQUIPMENT LTD. Free format text: FORMER NAME: NINGBO GESSN OCEAN EXPLOITATION CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315806 No. 206 Tiantai Mountain Road, Beilun District, Zhejiang, Ningbo Patentee after: JESSN MARINE EQUIPMENT Co.,Ltd. Address before: 315806 No. 206 Tiantai Mountain Road, Beilun District, Zhejiang, Ningbo Patentee before: Victory Marine Equipment Co.,Ltd. Address after: 315806 No. 206 Tiantai Mountain Road, Beilun District, Zhejiang, Ningbo Patentee after: Victory Marine Equipment Co.,Ltd. Address before: 315806 No. 206 Tiantai Mountain Road, Beilun District, Zhejiang, Ningbo Patentee before: NINGBO JESSN OCEAN DEVELOPMENT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20201011 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |