CN208069988U - A kind of novel speedup marine propeller - Google Patents
A kind of novel speedup marine propeller Download PDFInfo
- Publication number
- CN208069988U CN208069988U CN201721702508.1U CN201721702508U CN208069988U CN 208069988 U CN208069988 U CN 208069988U CN 201721702508 U CN201721702508 U CN 201721702508U CN 208069988 U CN208069988 U CN 208069988U
- Authority
- CN
- China
- Prior art keywords
- laval nozzle
- propeller
- utility
- speedup
- ontology
- 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
Links
Landscapes
- Toys (AREA)
- Earth Drilling (AREA)
Abstract
The utility model is related to a kind of novel speedup marine propellers, including propeller ontology, it is arranged with Laval nozzle outside the propeller ontology, and propeller ontology is located in the collapsible tube of Laval nozzle, and several inlet openings or intake chamber are offered on the constricting tube wall of the Laval nozzle.The utility model is originally additionally arranged Laval nozzle in vitro in propeller, utilize the architectural characteristic of Laval nozzle so that flow self-constriction pipe end enters, expansion pipe end discharge, water velocity changes by the variation by sectional area, can greatly improve the propulsive efficiency of propeller；Simultaneously because Laval nozzle internal helicoid paddle rotates to form negative pressure, the water flow velocity height inside Laval nozzle, pressure are low, and the pressure difference inside and outside Laval nozzle forms additional thrust, the fltting speed of further ship-lifting on tube wall.
Description
Technical field
The utility model is related to marine propeller field, especially a kind of novel speedup marine propeller.
Background technology
The propeller that marine propeller is made of propeller hub and several blades being radially fixed on hub.Propeller is pacified
Loaded on stern underwater, power is obtained by host and is rotated, after pushing water to ship, pushed boat advance using the reaction force of water.
Common ships that transport has 1~2 propeller.The big ship of propeller power, can increase propeller number；Large-scale quickly passenger boat has double paddles
To four paddles.Propeller generally has 3~4 blades, diameter not to touch the bottom depending on the horsepower of ship and drinking water, with lower end, on
End is no more than subject to full load line.Revolution speed of propeller should not be too high, and ocean freighter is per minute 100 to turn left the right side, and small-sized speedboat turns
Up to 400~500 turns per minute of speed, but efficiency will be affected.Propeller material generally uses manganese bronze or corrosion resisting alloy,
Stainless steel, nickel-aluminum bronze or cast iron can be used.
Since the sixties, ship tends to enlargement, and after powerful host, stern shakes caused by propeller-excited vibration
Dynamic, structural failure, noise, the problems such as degrading cause the attention of various countries.The basic reason of propeller-excited vibration is that screw blade is negative
Lotus is aggravated, and local non-stationary cavity is easy tod produce when working in uneven wake flow after ship, is acted on so as to cause propeller
Pressure, amplitude and the phase of hull all constantly change.
Laval nozzle is rocket engine and the most common component of aero-engine, and Laval nozzle is usually by two
Conical pipe is constituted, one of them is collapsible tube, another is managed for expansion, is the important component of thrust chamber（Jet pipe）.Tail
The first half of jet pipe is that narrow larynx changes from small to big again later expands outwardly to jet pipe from large to small to middle shrinkage to a narrow larynx
Bottom.Gas in jet pipe is passed through after narrow larynx by latter half of ejection by the first half of high pressure flow nozzle.This framework can make gas
The speed of stream changes because of the variation that nozzle section accumulates, and makes air-flow from subsonic speed to velocity of sound, until accelerating to supersonic speed.So
People are this tubaeform jet pipe transonic nozzle；Since it is Swede's Lavalle utility model, also referred to as " draw
Wa Er jet pipes ".Laval nozzle is as rocket engine and the most common component of aero-engine, and on marine propulsion
There has been no the precedents used.
Utility model content
In view of the drawbacks of the prior art, the technical problem to be solved by the present invention is to provide a kind of novel speedup is peculiar to vessel
Propeller improves at present because of a series of problems caused by propeller-excited vibration, while can greatly improve the propulsion rate of ship.
The utility model design thus uses following scheme：
A kind of novel speedup marine propeller, including propeller ontology, the propeller ontology are arranged with Lavalle spray outside
Pipe, and propeller ontology is located in the collapsible tube of Laval nozzle, is offered on the constricting tube wall of the Laval nozzle several
Inlet opening or intake chamber.
Further, the Laval nozzle is fixed on hull or propeller shaft.
The beneficial effects of the utility model are：
1, the utility model is originally additionally arranged Laval nozzle in vitro in propeller, using the architectural characteristic of Laval nozzle,
So that flow self-constriction pipe end enters, expansion pipe end discharge, water velocity changes by the variation by sectional area, can substantially
Improve the propulsive efficiency of propeller；Simultaneously because Laval nozzle internal helicoid paddle rotates to form negative pressure, inside Laval nozzle
Water flow velocity is high, pressure is low, and the pressure difference inside and outside Laval nozzle forms additional thrust on tube wall, further ship-lifting
Fltting speed.
2, since the gap between Laval nozzle and screw blade is relatively small, limit blade point streams loss, can
Energy loss is set to reduce to reduce the contraction of the wake flow after propeller；Certain rectification is played to the wake flow after propeller simultaneously to make
With, for caused by propeller-excited vibration afterbody vibration, structural failure, noise, degrade the problems such as play preferable improvement.
3, the Laval nozzle outside propeller can protect screw blade not cause to damage because being wound by fishing net, water plant etc.
It is bad, in addition stalling, while the safety of animal in water body can also be protected, avoid them from being in direct contact screw blade.
Description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
A kind of novel speedup marine propeller shown in referring to Fig.1, including propeller ontology 2, outside the propeller ontology 2
It is arranged with Laval nozzle 1.
Laval nozzle 1 includes collapsible tube 11 and expansion pipe 12, and propeller ontology 2 is located at the collapsible tube of Laval nozzle 1
In 11, Laval nozzle 1 is fixed on hull or propeller shaft.
Several inlet openings 3 or intake chamber 3, inlet opening 3 or water inlet are offered on 11 wall of collapsible tube of the Laval nozzle 1
Slot 3 is when 11 port of collapsible tube of Laval nozzle 1 is directly anchored on hull, as main water inlet；It is solid in Laval nozzle 1
When being scheduled on propeller shaft, the supplement as water inlet.
The operation principle of the utility model is as follows：11 end of flow self-constriction pipe enters, the discharge of 12 end of expansion pipe, water velocity
Change because by the variation of the sectional area of Laval nozzle 1, the propulsive efficiency of propeller 2 can be greatly improved；Simultaneously because drawing
The rotation of 1 internal helicoid paddle 2 of Wa Er jet pipes forms negative pressure, and flow is inhaled into from water inlet 3 or intake chamber 3 inside Laval nozzle 1,
Water flow velocity height inside Laval nozzle 1, pressure are low, and the pressure difference inside and outside Laval nozzle 1 forms additional push away on tube wall
Power, the fltting speed of further ship-lifting.
The preferable specific implementation mode of the above, only the utility model, but scope of protection of the utility model is not limited to
In this, any one skilled in the art is in the technical scope that the utility model discloses, the change that can readily occur in
Change or replace, should be covered within the scope of the utility model.Therefore scope of protection of the utility model is with claim
Subject to the protection domain of book.
Claims (2)
1. a kind of novel speedup marine propeller, including propeller ontology, it is characterised in that：It is arranged with outside the propeller ontology
Laval nozzle, and propeller ontology is located in the collapsible tube of Laval nozzle, is opened on the constricting tube wall of the Laval nozzle
Equipped with several inlet openings or intake chamber.
2. a kind of novel speedup marine propeller according to claim 1, it is characterised in that：The Laval nozzle is fixed
On hull or propeller shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721702508.1U CN208069988U (en) | 2017-12-09 | 2017-12-09 | A kind of novel speedup marine propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721702508.1U CN208069988U (en) | 2017-12-09 | 2017-12-09 | A kind of novel speedup marine propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208069988U true CN208069988U (en) | 2018-11-09 |
Family
ID=64032609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721702508.1U Expired - Fee Related CN208069988U (en) | 2017-12-09 | 2017-12-09 | A kind of novel speedup marine propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208069988U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902061A (en) * | 2017-12-09 | 2018-04-13 | 姚珍汉 | A kind of new speedup marine propeller |
| CN109533255A (en) * | 2018-11-27 | 2019-03-29 | 沈阳丁通用科技研究院 | Liquid propeller and aircraft |
-
2017
- 2017-12-09 CN CN201721702508.1U patent/CN208069988U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902061A (en) * | 2017-12-09 | 2018-04-13 | 姚珍汉 | A kind of new speedup marine propeller |
| CN109533255A (en) * | 2018-11-27 | 2019-03-29 | 沈阳丁通用科技研究院 | Liquid propeller and aircraft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6692318B2 (en) | Mixed flow pump | |
| CN101386334B (en) | Marine promoted by front water | |
| JP7334339B2 (en) | Method and device for reducing wave-making resistance and frictional resistance during navigation of a ship | |
| CN106379507B (en) | The environmental protection and energy saving ship pneumatically promoted | |
| CN104527957B (en) | Water spray peculiar to vessel T-shaped hydrofoil rudder | |
| CN206202650U (en) | Rectifier type marine main engine underwater exhaust goes out side of a ship device | |
| CN201914442U (en) | Turbo type ship propeller thruster | |
| CN103863541A (en) | Ship propulsion system | |
| CN107161279A (en) | A kind of waterpower propulsion system with water absorption channel | |
| CN208069988U (en) | A kind of novel speedup marine propeller | |
| CN204197246U (en) | The unidirectional drainage by suction system of power surf board machinery space | |
| CN104608897A (en) | Marine water spraying type propeller | |
| CN104229088A (en) | Single-direction negative-pressure water discharging system of engine compartment for power surfboard | |
| CN201062091Y (en) | Screw-propeller type water-spraying propulsion unit | |
| JP2008201400A (en) | Wave passing type, helical wing propulsion, energy saving ultra high-speed, submerged float catamaran | |
| CN107902061A (en) | A kind of new speedup marine propeller | |
| GB103325A (en) | Improvements in and relating to Jet Propulsion for Aquatic Vessels. | |
| CN201553292U (en) | Sail power speed raising device | |
| CN202642077U (en) | Energy-saving pump injection propeller for ships and submarines | |
| CN207826516U (en) | Combined type pump-jet propulsor | |
| Reichel | Influence of rudder location on propulsive characteristics of a single screw container ship | |
| Oosterveld | Ducted propeller systems suitable for tugs and pushboats | |
| KR101302035B1 (en) | A ship | |
| US20200324867A1 (en) | Propelling system of powered ship | |
| CN106516062B (en) | A kind of marine propulsion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181109 Termination date: 20191209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |