CN104002950B - The energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat - Google Patents
The energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat Download PDFInfo
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- CN104002950B CN104002950B CN201410187966.0A CN201410187966A CN104002950B CN 104002950 B CN104002950 B CN 104002950B CN 201410187966 A CN201410187966 A CN 201410187966A CN 104002950 B CN104002950 B CN 104002950B
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- prewhirling
- flow
- duct wall
- pressurizing duct
- flow deflectors
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- 238000004134 energy conservation Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 9
- 241001672694 Citrus reticulata Species 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 230000001141 propulsive effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 239000002002 slurry Substances 0.000 abstract description 3
- 239000000295 fuel oil Substances 0.000 abstract description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 101710119301 Protein delta homolog 1 Proteins 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses the energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat, it is arranged on stern, propeller front, above slurry axle, including left pressurizing duct wall, right pressurizing duct wall, central authorities' welding steel and six flow deflectors of prewhirling, left pressurizing duct wall and right pressurizing duct wall are the uncovered circular arc that big rear end, front end is little, the radius of left pressurizing duct wall is slightly less than the radius of right pressurizing duct wall, left, right pressurizing duct wall is integrally welded, one end of six flow deflectors of prewhirling is welded with the central welding steel as central shaft, the other end is welded on a left side, on the inwall of right pressurizing duct wall.The present invention can produce additional thrust to propeller, makes the wake above the propeller rotated more uniformly strong, and can be effectively improved boattail flow separation；Arranging of six flow deflectors of prewhirling can effectively produce preswirl, increases the thrust of propeller, improves the propulsive efficiency of propeller；Low cost of manufacture of the present invention, saves fuel oil respond well, has good economy.
Description
Technical field
The present invention relates to a kind of fishing boat energy saver, particularly relate to the energy-conservation wake compensation of prewhirling of a kind of novel fishing boat and lead
Pipe.
Background technology
Along with the rising of international bunker oil price, and International Maritime Organization's new ship energy-saving efficiency index E EDI is formal
Coming into force, in the new shipbuilding of China, and obsolete vessel transformation, the attached body of applicating energy-saving is more and more universal, occurs in that a collection of Preadipocyte factor-1, prewhirls
The attached body device of the ship energy savings such as guide wheel, but these energy savers, the most possible, but in real ship application, although improve
Flow field before and after propeller, but can not be obviously improved the propulsive efficiency of propeller, owing to have ignored, propeller is advanced effect
The consideration of rate, causes hull propulsive efficiency not to be obviously improved.
Summary of the invention
It is an object of the invention to overcome defect of the prior art and deficiency, it is provided that the energy-conservation companion that prewhirls of a kind of novel fishing boat
Stream compensating duct, the energy-conservation wake compensating duct of prewhirling of this fishing boat is by self distinctive six flow deflector of prewhirling, and left and right is not
Symmetrical pressurizing duct wall, can be effectively improved flow field around fishing boat propeller, can be obviously improved again fishing boat propeller propulsive efficiency.
For solving the problems referred to above, the technical solution adopted in the present invention is: the energy-conservation wake of prewhirling of a kind of novel fishing boat is mended
Repaying conduit, be arranged on stern, propeller front, above slurry axle, including left pressurizing duct wall, right pressurizing duct wall, central authorities' welding steel
It is the uncovered circular arc that big rear end, front end is little, left supercharging with six flow deflectors of prewhirling, left pressurizing duct wall and right pressurizing duct wall
The radius of catheter wall is slightly less than the radius of right pressurizing duct wall, and left and right pressurizing duct wall is integrally welded, six flow deflectors of prewhirling
One end weld with the central welding steel as central shaft, the other end is welded on the inwall of left and right pressurizing duct wall.
The energy-conservation wake compensating duct of prewhirling of aforesaid a kind of novel fishing boat, six wherein said flow deflectors of prewhirling include
Number flow deflector of prewhirling, No. two flow deflectors of prewhirling, No. three flow deflectors of prewhirling, No. four flow deflectors of prewhirling, No. five prewhirl flow deflector and
No. six flow deflectors of prewhirling, flow deflector of prewhirling, No. two prewhirl flow deflector and No. three flow deflectors of prewhirling are welded on left pressurizing duct
On wall, No. four flow deflectors of prewhirling, No. five prewhirl flow deflector and No. six flow deflectors of prewhirling are welded on right pressurizing duct wall.
Compared with prior art, the invention has the beneficial effects as follows: left pressurizing duct wall and right pressurizing duct wall are along captain side
Arranging to the diameter tapered into from front end to rear end and can produce additional thrust, both is different straight at front end i.e. becomes a mandarin end
It is more uniformly strong that footpath size arranges the wake that can make above the propeller rotated, and can be effectively improved boattail flow separation；
Arranging of six flow deflectors of prewhirling can effectively produce preswirl, increases the thrust of propeller, improves the propulsive efficiency of propeller
3%；Low cost of manufacture of the present invention, saves fuel oil respond well, has good economy, it is easy to connect with shipyard by fisherman
It is subject to.
Accompanying drawing explanation
Fig. 1 is the perspective view of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is the left view of the present invention；
In above-mentioned accompanying drawing, the 1-mono-flow deflector 2-bis-flow deflector 3-tri-flow deflector 4-tetra-that prewhirls that prewhirls that prewhirls is pre-
The rotation flow deflector 5-five flow deflector 6-six that prewhirls prewhirls in flow deflector 7-left pressurizing duct wall 8-right pressurizing duct wall 9-
Heart welding steel
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is further described.
As it is shown in figure 1, the energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat, including left pressurizing duct wall 7, right supercharging
Catheter wall 8, central authorities' welding steel 9 and six flow deflectors of prewhirling, left pressurizing duct wall 7 and right pressurizing duct wall 8 are big rear end, front end
Little uncovered circular arc, the radius of left pressurizing duct wall 7 is slightly less than the radius of right pressurizing duct wall 8, and left and right pressurizing duct wall welds
Integral, one end of six flow deflectors of prewhirling is welded with the central welding steel 9 as central shaft, and the other end is welded on left and right supercharging
On the inwall of catheter wall.
As it is shown in figure 1, the energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat, six wherein said flow deflectors of prewhirling
Prewhirl including a flow deflector 1, two of prewhirling flow deflector 2, three flow deflector 3, four flow deflector 4, five of prewhirling of prewhirling of prewhirling
Flow deflector 5 and No. six flow deflectors 6 of prewhirling, flow deflector 1, two of prewhirling flow deflector 2 flow deflector 3 of prewhirling with No. three of prewhirling welds
On left pressurizing duct wall 7, flow deflector 5 prewhirled by No. four flow deflectors 4, five of prewhirling and No. six flow deflectors 6 of prewhirling are welded on right increasing
On pressure catheter wall 8.
As it is shown on figure 3, the energy-conservation wake compensating duct of prewhirling of this fishing boat is installed on stern, propeller front, starch above axle, greatly
The front end of mouth is the end that becomes a mandarin, and end is flowed for going out in the rear end of osculum, a length of L of conduit, and propeller radius is that R, L are usually arranged as
0.75～0.85R.
As it is shown on figure 3, the front end of the pressurizing duct outer wall being made up of left pressurizing duct wall 7 and right pressurizing duct wall 8 i.e. enters
Stream end opening is big, and it is little that rear end i.e. goes out to flow end opening, and the bus of pressurizing duct outer wall and the angle theta of exit end face are 100 °, and this sets
Stream used by meter can produce extra additional thrust to propeller, strengthens hull efficiency.
As in figure 2 it is shown, left pressurizing duct wall 7 typically takes 0.3～0.45L at the radius R1 going out to flow end, right pressurizing duct wall 8
Typically taking 0.45～0.55L at the radius R2 going out to flow end, the center of circle of right pressurizing duct wall 8 is positioned at the center of circle of left pressurizing duct wall 7
At the rightest 0.2R1, left pressurizing duct wall 7 is going out to flow, from right pressurizing duct wall 8, the radial design that end is different, and flow field can be made the most negative
Lotus is in the different propeller blade surface of curvature, and can be effectively improved stern flow separation.
As in figure 2 it is shown, the angle α 1 of prewhirl flow deflector 1 and No. two flow deflectors 2 of prewhirling is 60 °, No. two water conservancy diversion of prewhirling
The angle α 2 of sheet 2 and No. three flow deflectors 3 of prewhirling is 60 °, and the angle α 3 of No. three prewhirl flow deflector 3 and No. four flow deflectors 4 of prewhirling is
60 °, the angle α 4 of No. four prewhirl flow deflector 4 and No. five flow deflectors 5 of prewhirling is 60 °, and No. five flow deflectors 5 of prewhirling are prewhirled with No. six and led
The angle α 5 of flow 6 is 60 °, and the angle α 6 of No. six prewhirl flow deflector 6 and flow deflectors 1 of prewhirling is 60 °, No. three water conservancy diversion of prewhirling
Sheet 3 prewhirl with No. six flow deflector 6 edge become a mandarin end overlap with the centrage of left pressurizing duct wall 7.
As it is shown in figure 1, six flow deflectors of prewhirling are curved surface stainless steel materials, and going out to flow end and the end margin that becomes a mandarin is carried out down
Fillet processes.
As in figure 2 it is shown, flow deflector 1 of prewhirling becomes a mandarin, end margin goes out to flow end edge with it going out the orthographic projection line flowed on end face
The angle β 1 of edge is 3.95 °, and No. two flow deflectors 2 of prewhirling end margin that becomes a mandarin goes out to flow end edge with it going out the orthographic projection line flowed on end face
The angle β 2 of edge is 3.95 °, and No. three flow deflectors 3 of prewhirling end margin that becomes a mandarin goes out to flow end edge with it going out the orthographic projection line flowed on end face
The angle β 3 of edge is 3.95 °, and No. four flow deflectors 4 of prewhirling end margin that becomes a mandarin goes out to flow end edge with it going out the orthographic projection line flowed on end face
The angle β 4 of edge is 3.95 °, and No. five flow deflectors 5 of prewhirling end margin that becomes a mandarin goes out to flow end edge with it going out the orthographic projection line flowed on end face
The angle β 5 of edge is 3.95 °, and No. six flow deflectors 6 of prewhirling end margin that becomes a mandarin goes out to flow end edge with it going out the orthographic projection line flowed on end face
The angle β 6 of edge is 3.95 °, and such design can effectively produce preswirl, reduces the loss of screw current rotating energy, and makes
Flow field is evenly.
The energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat, wherein said left pressurizing duct wall 7 is led with right supercharging
Tube wall 8 is stainless steel materials.
The energy-conservation wake compensating duct of prewhirling of this fishing boat is installed on stern, propeller front, above slurry axle, travels at fishing boat
Time, current are entered conduit by the end that becomes a mandarin, left pressurizing duct wall and right pressurizing duct wall along captain direction from front end to rear end gradually
The diameter that diminishes arranges and the propeller first half can be made to become a mandarin accelerations, generation additional thrust, and reduces propeller first half wake
Peak, arranging of six flow deflectors of prewhirling can make current generation prewhirl, and make propeller enters flow field more uniformly, reduces stern energy
Loss, left pressurizing duct wall and right pressurizing duct wall arrange to use and flow on the surface of propeller going out the different size of end of miscarrying
Raw active force advantageously, can effectively reduce propeller torsion.
The version of the energy-conservation wake compensating duct of prewhirling of this fishing boat is complete, and structural strength is high, compared to existing boats and ships
Energy saving appendage device, can effectively reduce vibration and noise, beneficially fish production operation.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (5)
1. the energy-conservation wake compensating duct of prewhirling of novel fishing boat, including left pressurizing duct wall (7), right pressurizing duct wall (8),
Central authorities' welding steel (9) and six flow deflectors of prewhirling, it is big that described left pressurizing duct wall (7) and right pressurizing duct wall (8) are front end
The uncovered circular arc that rear end is little, the radius of left pressurizing duct wall (7) is slightly less than the radius of right pressurizing duct wall (8), and left and right supercharging is led
Tube wall is integrally welded, and one end of six flow deflectors of prewhirling is welded with the central welding steel (9) as central shaft, and the other end is welded on
On the inwall of left and right pressurizing duct wall；The a length of L of described conduit, propeller radius is that R, L are set to 0.75～0.85R；
The front end of the pressurizing duct outer wall being made up of left pressurizing duct wall (7) and right pressurizing duct wall (8) end opening that i.e. becomes a mandarin is big, rear end
I.e. going out to flow end opening little, the bus of pressurizing duct outer wall and the angle theta of exit end face are 100 °, it is characterised in that left supercharging is led
Tube wall (7) is 0.3～0.45L at the radius R1 going out to flow end, right pressurizing duct wall (8) the radius R2 going out to flow end be 0.45～
0.55L, the center of circle of right pressurizing duct wall (8) is positioned at the rightest 0.2R1 in the center of circle of left pressurizing duct wall (7)；Six water conservancy diversion of prewhirling
Sheet is curved surface stainless steel materials, and is going out to flow end and the end margin that becomes a mandarin carries out rounding process.
The energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat the most according to claim 1, it is characterised in that described
Six flow deflectors of prewhirling include a flow deflector of prewhirling (1), No. two flow deflectors of prewhirling (2), No. three flow deflectors of prewhirling (3), No. four
Prewhirl flow deflector (4), No. five flow deflectors of prewhirling (5) and No. six flow deflectors of prewhirling (6), flow deflector of prewhirling (1), No. two prewhirl
Flow deflector (2) and No. three flow deflectors of prewhirling (3) are welded on left pressurizing duct wall (7), No. four flow deflectors of prewhirling (4), No. five pre-
Rotation flow deflector (5) and No. six flow deflectors of prewhirling (6) are welded on right pressurizing duct wall (8).
The energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat the most according to claim 2, it is characterised in that No. one pre-
Rotation flow deflector (1) is 60 ° with the angle α 1 of No. two flow deflectors of prewhirling (2), No. two flow deflectors of prewhirling (2) and No. three flow deflectors of prewhirling
(3) angle α 2 is 60 °, and the angle α 3 of No. three flow deflectors of prewhirling (3) and No. four flow deflectors of prewhirling (4) is 60 °, prewhirls for No. four and leads
Flow (4) is 60 ° with the angle α 4 of No. five flow deflectors of prewhirling (5), No. five flow deflectors of prewhirling (5) and No. six flow deflectors of prewhirling (6)
Angle α 5 be 60 °, No. six flow deflectors of prewhirling (6) are 60 ° with the angle α 6 of a flow deflector of prewhirling (1), No. three water conservancy diversion of prewhirling
Sheet (3) overlaps with the centrage of left pressurizing duct wall (7) at the end that becomes a mandarin with the edge of No. six flow deflectors of prewhirling (6).
The energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat the most according to claim 2, it is characterised in that No. one pre-
Rotation flow deflector (1) end margin that becomes a mandarin is 3.95 ° going out the orthographic projection line flowed on end face and go out to flow with it angle β 1 of end margin, No. two
Flow deflector (2) of the prewhirling end margin that becomes a mandarin is 3.95 ° going out the orthographic projection line flowed on end face and go out to flow with it angle β 2 of end margin, three
Flow deflector (3) of number the prewhirling end margin that becomes a mandarin is 3.95 ° going out the orthographic projection line flowed on end face and go out to flow with it angle β 3 of end margin,
No. four flow deflectors of prewhirling (4) end margin that becomes a mandarin at the angle β 4 going out the orthographic projection line flowed on end face and go out to flow with it end margin is
3.95 °, No. five flow deflectors of prewhirling (5) end margin that becomes a mandarin is going out the orthographic projection line flowed on end face and goes out to flow with it angle β 5 of end margin
Being 3.95 °, No. six flow deflectors of prewhirling (6) end margin that becomes a mandarin goes out to flow the angle of end margin with it going out the orthographic projection line flowed on end face
β 6 is 3.95 °.
The energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat the most according to claim 1, it is characterised in that described
Left pressurizing duct wall (7) and right pressurizing duct wall (8) are stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187966.0A CN104002950B (en) | 2014-05-06 | 2014-05-06 | The energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187966.0A CN104002950B (en) | 2014-05-06 | 2014-05-06 | The energy-conservation wake compensating duct of prewhirling of a kind of novel fishing boat |
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| Publication Number | Publication Date |
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| CN104002950A CN104002950A (en) | 2014-08-27 |
| CN104002950B true CN104002950B (en) | 2017-01-04 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828226A (en) * | 2015-04-21 | 2015-08-12 | 中国船舶工业集团公司第七〇八研究所 | Auxiliary propulsion energy-saving device for ship hydrodynamics |
| 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 | One kind being used for the pinpoint experimental rig of paddle precompensation conduit and installation method |
| CN109606596A (en) * | 2018-11-29 | 2019-04-12 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Energy saving half guide wheel before a kind of paddle |
| CN110040231A (en) * | 2019-05-13 | 2019-07-23 | 哈尔滨工程大学 | A kind of asymmetric conduit for ship rear screw shaft |
| CN113879498B (en) * | 2021-11-10 | 2022-10-14 | 中国船舶工业集团公司第七0八研究所 | Marine spiral line type guide pipe fin |
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| US7357687B1 (en) * | 2006-12-29 | 2008-04-15 | Navatek, Ltd. | Marine propulsion steering system |
| CN202593838U (en) * | 2012-05-18 | 2012-12-12 | 大连船舶重工集团有限公司 | Ship hydrodynamic front guide wheel energy-saving device |
| EP2594479A1 (en) * | 2011-11-18 | 2013-05-22 | Hamilton Sundstrand Corporation | Rim driven thruster having propeller drive modules |
| EP2597030A2 (en) * | 2011-02-25 | 2013-05-29 | Becker Marine Systems GmbH & Co. KG | Pre-nozzle for a propulsion system of a water vehicle for improving energy efficiency |
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2014
- 2014-05-06 CN CN201410187966.0A patent/CN104002950B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7357687B1 (en) * | 2006-12-29 | 2008-04-15 | Navatek, Ltd. | Marine propulsion steering system |
| EP2597030A2 (en) * | 2011-02-25 | 2013-05-29 | Becker Marine Systems GmbH & Co. KG | Pre-nozzle for a propulsion system of a water vehicle for improving energy efficiency |
| EP2594479A1 (en) * | 2011-11-18 | 2013-05-22 | Hamilton Sundstrand Corporation | Rim driven thruster having propeller drive modules |
| CN202593838U (en) * | 2012-05-18 | 2012-12-12 | 大连船舶重工集团有限公司 | Ship hydrodynamic front guide wheel energy-saving device |
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