CN206466119U - It is a kind of to prevent bubble from keeping away control device into propeller flow field - Google Patents
It is a kind of to prevent bubble from keeping away control device into propeller flow field Download PDFInfo
- Publication number
- CN206466119U CN206466119U CN201621286218.9U CN201621286218U CN206466119U CN 206466119 U CN206466119 U CN 206466119U CN 201621286218 U CN201621286218 U CN 201621286218U CN 206466119 U CN206466119 U CN 206466119U
- Authority
- CN
- China
- Prior art keywords
- exhaust outlet
- propeller
- flow field
- cavity
- bubble
- 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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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Landscapes
- Exhaust Silencers (AREA)
Abstract
Prevent bubble from keeping away control device into propeller flow field the utility model discloses a kind of, be arranged on the bottom plate of sail body, the sail body afterbody is provided with propeller, it is characterised in that：Including exhaust outlet, the exhaust outlet is opened on bottom plate, is connected with the exhaust outlet on cavity, the cavity and is additionally provided with connector, and the exhaust outlet passes through cavity and connector and atmosphere.The utility model has the advantage of：Its is simple in construction, practical to there is pressure difference and the buoyant characteristic of bubble itself tool using sail body base pressure and atmospheric pressure there is provided one kind, and bubble is introduced into air before propeller flow field is entered, effectively prevents bubble to enter propeller flow field.
Description
Technical field
The utility model is related to naval vessels, navigation safety technical field, and particularly relating to one kind prevents bubble from entering spiral
Control device is kept away in oar flow field.
Background technology
Bubble or air layers reducing resistance are in the application in the fields such as naval vessels, ship, and spiral shell will be influenceed into propeller flow field by being related to bubble
The problem of revolving oar performance.How to control bubble to enter propeller or propeller flow field, be that bubble or air layers reducing resistance are used in real shipping
The problem of field must be solved.
Generally the bottom that gas or bubble are incorporated into this kind of sail body is formed using certain specific process and is close to object plane
Air film or gas liquid two-phase flow, change the fluid density at flow boundary Rotating fields and nearly wall on solid wall surface, to realize warship
This kind of sail body drag reduction such as ship, ship declines.But with the advance of sail body, the gas or bubble of introducing are joined at nearly wall with water
Mixed flow forms bubble not of uniform size and with coalescence or crushing motion, these bubbles will more or less enter to tail flow field
Propeller flow field.Bubbly flow with coalescence or crushing motion will influence propeller the performance even service life of propeller and
Security.
Utility model content
The purpose of this utility model seek to provide it is a kind of prevent bubble from entering propeller flow field and keeping away control device, realize gas
Bubble keeps away control into propeller flow field, reaches that control bubble enters the purpose in propeller or propeller flow field.
To achieve the above object, a kind of control that keeps away for preventing that bubble from entering propeller flow field designed by the utility model is filled
Put, be arranged on the bottom plate of sail body, the sail body afterbody is provided with propeller, it is characterised in that：Including exhaust outlet, the row
Gas port is opened on bottom plate, is connected with the exhaust outlet on cavity, the cavity and is additionally provided with connector, and the exhaust outlet passes through
Cavity and connector and atmosphere.
Further, the exhaust outlet is arranged on propeller upstream end.
As preference, the exhaust outlet is provided with multiple, and the multiple exhaust outlet hides completely on sail body direct of travel
Gear is in the propeller of sail body stern.
As preference, the exhaust outlet is bar shaped, and the bar shaped exhaust outlet is blocked completely on sail body direct of travel
Positioned at the propeller of sail body stern.
Further, the cavity is arranged in the nacelle of sail body, and the cavity is the cuboid of upper and lower opening, institute
State the cylinder that connector is upper and lower opening.
The utility model has the advantage of：Its is simple in construction, it is practical there is provided one kind using sail body base pressure with
There is pressure difference in atmospheric pressure and bubble itself has buoyant characteristic, and bubble is introduced into air before propeller flow field is entered
In, effectively prevent bubble to enter propeller flow field.
Brief description of the drawings
Fig. 1 is the structural representation in the utility model embodiment 1；
Fig. 2 is the structural representation in the utility model embodiment 2.
Wherein：Sail body 1, fore 2, bottom plate 3, nacelle 4, propeller 5, propeller upstream 6, exhaust outlet 7, cavity 8, connection
Mouth 9.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
It is a kind of to prevent bubble from keeping away control device into propeller flow field, it is arranged on the bottom plate 3 of sail body 1, the navigation
The afterbody of body 1 is provided with propeller 5, it is characterised in that：Including exhaust outlet 7, the exhaust outlet 7 is opened on bottom plate 3, the exhaust outlet
It is connected with 7 on cavity 8, the cavity 8 and is additionally provided with connector 9, the exhaust outlet 7 is connected by cavity 8 and connector 9 with air
It is logical.The exhaust outlet 7 is arranged at propeller upstream 6.The cavity 8 is arranged in the nacelle 4 of sail body 1, and the cavity 8 is
The cuboid of upper and lower opening, the connector 9 is the cylinder of upper and lower opening.
The exhaust outlet 7 is provided with multiple, and the multiple exhaust outlet 7 is blocked positioned at boat completely on the direct of travel of sail body 1
The propeller 5 of the stern of row body 1.
Or, the exhaust outlet 7 is bar shaped, and the bar shaped exhaust outlet 7 is blocked completely on the direct of travel of sail body 1 to be located at
The propeller 5 of the stern of sail body 1.
When actual use：
Embodiment 1：
As shown in figure 1, continuous perpendicular to one of water (flow) direction out of my cabin being opened up on bottom plate 3 at propeller upstream 6
Exhaust outlet 7, the cross sectional shape of exhaust outlet 7 in the horizontal direction be rectangle, cavity 8 be located at cabin in 4 with exhaust outlet 7 seal is connected,
The cross sectional shape of cavity 8 in the horizontal direction is rectangle, and opening 9 is communicated in the top of cavity 8 and with air, and connector 9 is in level side
To cross sectional shape for circle.
Embodiment 2：
As shown in Fig. 2 opened up on bottom plate 3 at propeller upstream 6 perpendicular to water (flow) direction out of my cabin a plurality of seam not
Continuous exhaust outlet 7, exhaust outlet 7 is vertical with water (flow) direction, and the cross sectional shape of exhaust outlet 7 in the horizontal direction is rectangle, cavity 8
It is connected in cabin 4 with the sealing of exhaust outlet 7, the cross sectional shape of cavity 8 in the horizontal direction is polygon, and connector 9 is in the side of cavity 8
And communicated with air, the cross sectional shape of connector 9 in the horizontal direction is ellipse.
When sail body 1 is in surface navigation, fore 2 contacts to form bubble with the water surface, and is moved along bottom plate 3 to stern direction
It is dynamic, when bubble flows through exhaust outlet 7, because there is pressure difference and bubble itself tool in the pressure of bottom plate 3 and the atmospheric pressure of sail body 1
Buoyant characteristic, bubble can enter cavity 8 by exhaust outlet 7, then enter air by connector 9, so as to effectively prevent bubble
Into propeller flow field.
Simply preferred embodiment of the present utility model described above, not limits the practical range of utility model with this, all
The equivalence changes made according to the shape of the utility model, construction and principle, all should cover in protection domain of the present utility model.
Claims (5)
1. a kind of prevent bubble from keeping away control device into propeller flow field, it is arranged on the bottom plate of sail body (1) (3), the boat
Row body (1) afterbody is provided with propeller (5), it is characterised in that：Including exhaust outlet (7), the exhaust outlet (7) is opened in bottom plate (3)
On, it is connected with the exhaust outlet (7) on cavity (8), the cavity (8) and is additionally provided with connector (9), the exhaust outlet (7) is led to
Cross cavity (8) and connector (9) and atmosphere.
A kind of prevent bubble from entering propeller flow field and keeping away control device 2. according to claim 1, it is characterised in that：It is described
Exhaust outlet (7) is arranged on propeller upstream (6) place.
A kind of prevent bubble from entering propeller flow field and keeping away control device 3. according to claim 2, it is characterised in that：It is described
Exhaust outlet (7) is provided with multiple, and the multiple exhaust outlet (7) is blocked positioned at sail body (1) completely on sail body (1) direct of travel
The propeller (5) of stern.
A kind of prevent bubble from entering propeller flow field and keeping away control device 4. according to claim 2, it is characterised in that：It is described
Exhaust outlet (7) is bar shaped, and the bar shaped exhaust outlet (7) is blocked positioned at sail body (1) ship completely on sail body (1) direct of travel
The propeller (5) of tail.
5. a kind of according to any one in Claims 1 to 4 prevents what bubble from entering propeller flow field to keep away control device, its
It is characterised by：The cavity (8) is arranged in the nacelle (4) of sail body (1), and the cavity (8) is the cuboid of upper and lower opening,
The connector (9) is the cylinder of upper and lower opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621286218.9U CN206466119U (en) | 2016-11-28 | 2016-11-28 | It is a kind of to prevent bubble from keeping away control device into propeller flow field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621286218.9U CN206466119U (en) | 2016-11-28 | 2016-11-28 | It is a kind of to prevent bubble from keeping away control device into propeller flow field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206466119U true CN206466119U (en) | 2017-09-05 |
Family
ID=59709243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621286218.9U Expired - Fee Related CN206466119U (en) | 2016-11-28 | 2016-11-28 | It is a kind of to prevent bubble from keeping away control device into propeller flow field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206466119U (en) |
-
2016
- 2016-11-28 CN CN201621286218.9U patent/CN206466119U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170905 Termination date: 20181128 |