CN203889038U - Promoting water-jet propeller - Google Patents
Promoting water-jet propeller Download PDFInfo
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- CN203889038U CN203889038U CN201420282495.7U CN201420282495U CN203889038U CN 203889038 U CN203889038 U CN 203889038U CN 201420282495 U CN201420282495 U CN 201420282495U CN 203889038 U CN203889038 U CN 203889038U
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- connecting strap
- shackle
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- waterjet propulsor
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Abstract
The utility model provides a promoting water-jet propeller which comprises a water-jet cylinder, a reciprocating main shaft, a rotary shaft and blades. The water-jet cylinder comprises a straight portion and a horn-shaped portion, the horn-shaped portion is provided with a water inlet hole, the large end of the horn-shaped portion is fixed to one end of a ship, the small end of the horn-shaped portion is connected with the horn-shaped portion, the end of the reciprocating main shaft is connected with the middle of the rotary shaft, the inner wall of the straight portion is provided with two slide grooves, the two ends of the rotary shaft are installed in the two slide grooves respectively, the blades include the first blade and the second blade, the first blade and the second blade are connected through a connection piece and can rotate relative to the connection piece, the connection piece is provided with two connection rings, and the connection piece is arranged on the rotary shaft in a sleeved mode through the connection rings. On the premise that navigation performance of the ship is guaranteed, influences of stern wake can be avoided, water flow is promoted to move backward in the axial direction, transverse flow is avoided, and accordingly energy loss is reduced and propulsive efficiency is improved.
Description
Technical field
The utility model relates to a kind of marine installation, specifically marine propeller.
Background technology
Screw propeller rotates, and when propelling fluid moves backward, fluid has been produced and rotatablely moves.It is that screw propeller generation thrust is necessary that propelling fluid moves backward, and rotatablely moving of wake flow is a kind of energy dissipation completely.Wake flow the consumed energy that rotatablely moves can reach the more than 15% of main engine power conventionally.In addition, common screw propeller ubiquity rotating speed strong noise is large, and water side produces larger resistance to boats and ships greatly, and complex process processing and manufacturing difficulty is large.Waterjet propulsor had been obtained significantly development in recent years, and compared with conventional screw propeller, waterjet propulsor has cavitation resistance can be superior, and the advantage such as noise is little.But waterjet propulsor propulsion coefficient is generally on the low side.
The existing multiple patents of flat board as marine propeller that adopt both at home and abroad, for example US Patent 4,102,293 and domestic applications number be 02133483.8,201310106145.1 patent, provide thrust forward by producing bionical Weis-Fogh effect for boats and ships.Propelling unit by this mechanismic design is no doubt efficient, but still there is a little deficiency, first because hull travels forward, when in the time that propelling unit opens, adverse current moves ahead, produce larger resistance, secondly, in the process of ' sumo is opened with anxious ', easily produce lateral flow, identical with screw propeller rotary current, be also a kind of loss of energy.
Under the large background of nowadays vigorously advocating energy-saving and emission-reduction, the energy-conservation propelling unit of development of new avoids producing unnecessary rotary current and lateral flow becomes the important subject of ship energy saving.
Summary of the invention
The purpose of this utility model is to provide the waterjet propulsor of agitating that can avoid potential wake impact.
The purpose of this utility model is achieved in that
The utility model is agitated waterjet propulsor, it is characterized in that: comprise water tube, reciprocating main shaft, S. A., blade, water tube comprises straight drum part and speaking trumpet part, in speaking trumpet part, offer inlet opening, the stub end of speaking trumpet part is fixed on one end of hull, the little head end of speaking trumpet part is connected with speaking trumpet part, reciprocating spindle nose is connected with S. A. middle part, two chutes are set on straight drum part inwall, the two ends of S. A. are arranged on respectively in two chutes, described blade comprises the first blade and the second blade, the first blade and the second blade pass are crossed connecting strap and are linked together, two shackles are set on connecting strap, connecting strap is placed on S. A. by shackle.
The utility model can also comprise:
1,, in the time that the first blade and the second blade launch completely, the first blade and the second blade and the seamless connection of straight drum part inwall, in the time that the first blade and the second blade close up completely, form cavity between the first blade and the second blade.
2, on S. A., torsion spring is installed, torsion spring two ends are fixedly connected with two shackles respectively.
3, on connecting strap, be provided with draw-in groove, S. A. middle part arranges balancing needle.
4, two shackles are according to connecting strap center asymmetric arrangement, and the width of the shackle at close connecting strap center is the width 2/3-3/4 away from the shackle at connecting strap center.
Advantage of the present utility model is: the utility model is ensureing, under the prerequisite of ship's navigation performance, to avoid the impact of potential wake, promotes current motion backward vertically, thereby avoids transverse flow to reduce degradation of energy, improves propulsion coefficient.
Brief description of the drawings
Fig. 1 installs the general view of agitating waterjet propulsor boats and ships;
Fig. 2 is Fig. 1 stern partial enlarged drawing;
Fig. 3 is the utility model structural representation;
Fig. 4 agitates waterjet propulsor hemisection view;
Fig. 5 agitates propelling unit birds-eye view;
Fig. 6 agitates propelling unit half view;
Fig. 7 agitates the propelling unit mechanism that is rigidly connected;
Fig. 8 a agitates propelling unit two blade schematic diagram a, and Fig. 8 b agitates propelling unit two blade schematic diagram b;
Fig. 9 is S. A. shell;
Figure 10 agitates propelling unit to open schematic diagram;
Figure 11 is main shaft kinematic velocity variation tendency backward;
Figure 12 is the maximum open configuration schematic diagram of propelling unit;
Figure 13 agitates the closed schematic diagram of propelling unit.
Detailed description of the invention
For example the utility model is described in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～13, to agitating propelling unit to install water tube additional, longitudinal rotating shaft is fixed on reciprocating main shaft, two ends are connected with water tube chute, agitate propelling unit to seesaw along water tube chute, current enter water tube through water tube front end inlet opening, by current with agitate angle of rake relative motion, agitate blade to rotate around S. A. under flow action for two, thus periodically opening and closing.When main shaft travels forward, agitate blade countercurrent movement, blade is closed under fluid effect, similar marine rudder; When main shaft moves backward, blade opens under fluid effect, promotes to move after current direction, thereby thrust is forward provided.
The utility model waterjet propulsor of agitating peculiar to vessel.Formed by reciprocating main shaft, longitudinal rotating shaft, a pair of blade and the water tube of agitating.Longitudinal rotating shaft is made up of shell and interior axle, and under the drive of reciprocating main shaft, along water tube chute crank motion, current flow into water tube through inlet opening, agitates blade and interior Spindle Links, under flow action, rotates around S. A. for two.Thereby motion produces thrust forward after main shaft moves backward and promotes current direction when blade opens completely.
After ship, install water tube additional, cylinder front end has inlet opening, and current flow into through this hole.The existence of water tube can be avoided the impact of External airflow field on propeller performance.
By current and angle of rake relative motion, agitate blade to rotate around S. A. under flow action for two, thus periodically opening and closing.
Relatively traditional propeller, this Novel propeller does not produce tailspin stream, and degradation of energy is few, and efficiency is high, noise and cavity function admirable.
Current enter water pipeline through the inlet opening of propelling unit front end, by current and agitate angle of rake relative motion, agitate blade rotate around S. A. under flow action for two, thus periodicity opening and closing.When main shaft travels forward, agitate blade countercurrent movement, blade is closed under fluid effect, similar marine rudder; When main shaft moves backward, blade opens under fluid effect, promotes to move after current direction, thereby thrust is forward provided.Relatively traditional propeller, this Novel propeller does not produce tailspin stream, and degradation of energy is few, and efficiency is high.Under the overall background of nowadays energy-saving and emission-reduction, this propelling unit has good actual application prospect.
Fig. 1 has provided and has agitated waterjet propulsor arrangement plan on the quarter.Fig. 2 has carried out local amplification to Fig. 1 stern, and as can be seen from the figure propelling unit shell and stern carry out seamless connection, has as a complete unit good flow field Adapter Property.
Fig. 3 has provided the integral structure schematic diagram of agitating waterjet propulsor, and water tube 5 can play valve action to inner incoming flow as propelling unit shell, makes inner incoming flow become more even.Current enter water drum through inlet opening 2.Blade 3 rotates around S. A. 4, under reciprocating main shaft 1 effect, does front-rear reciprocation movement.
For propelling unit inside being had to individual understanding clearly, retain the half of water tube, as shown in Figure 4.Chute 6 is on water tube.Water tube and hull are an entirety, agitate propelling unit to seesaw along chute.Propelling unit moves backward, and in the time that blade launches completely, blade disk is realized and the seamless connection of cylinder bench section, thereby promotes to greatest extent to move after current direction.
Fig. 5 has provided and has agitated propelling unit birds-eye view, and in S. A., axle 8 outsides are S. A. shell 7, and when blade 3 closes up, cavity 9 appears in inside, while agitating propelling unit to move backward, opens at the effect lower blade 3 of cavity 9 current.
Fig. 6, for agitating propelling unit half view, in order there to be one to get information about to interior of rotating shaft, retains half S. A. shell and a slice blade.Torsion spring 10 two ends agitate the shackle of blade to be fixedly connected with two respectively, have the trend of mutually closing up to two blades, and while guaranteeing that main shaft travels forward, two blades can close up completely, thereby reduce corresponding fluid resistance.Balancing needle 11 is for guaranteeing that two blades can be in Chuan Zhongchu in the time closing up.
Fig. 7 is propelling unit rigid connector, wherein in reciprocating main shaft 1, S. A., axle 8 and balancing needle 11 can adopt integrated production, ensure the steadiness of structure, in the mode of S. A. shell by welding and reciprocating main shaft 1 and S. A., axle 8 upper and lower sides are rigidly connected.
Fig. 8 has provided separately and has agitated angle of rake two blades, blade draw-in groove 13 to be used for controlling to agitate the maximum bubble flare of blade, coincide with main shaft 1 camber line.Two agitate blade 3 all the shackle 12 different from two width be connected, the annulus width in is partially got 2/3-3/4 of inclined to one side outer toroid width.Because adapter shaft is thinner, the interior shorter intensity that ensures rotating shaft of adapter shaft partially.
Fig. 9 is for agitating propelling unit S. A. shell, and S. A. shell breach 14 is identical with the attaching parts width of blade and shackle, prevents into water to realize sealing but be slightly less than shackle width.
This Novel propeller mainly relies on agitates the mutual motion of propelling unit and current to realize under the effect of current to agitate opening and closure of blade.Think that ship navigates by water in hydrostatic, propelling unit speed of incoming flow V0 size is approximate equates and opposite direction with ship's speed Vp.In the time that reciprocating main shaft moves backward, in phyllocyst, under flow force F effect, agitate blade to open, as shown in figure 10.Realize soft opening in order to make blade, the speed VZ that main shaft moves backward accelerates finally to reach 4 times of ship's speed Vp gradually by zero, and produce maximum thrust Ft, move to maximum stroke always, as shown in figure 11, Figure 12 has provided the maximum open configuration of propelling unit to the maximum open configuration schematic diagram of propelling unit velocity variations trend.In main shaft accelerator, agitate blade to be flared to gradually maximum open configuration.
In the time that propelling unit travels forward, rotating shaft travels forward with 1 times of ship's speed, agitates blade to close gradually reality, as shown in figure 13 under bourn acting force F effect.The blade of agitating after closing is in fact hydrofoil shape, and fluid resistance is less, can effectively reduce resistance.
Claims (9)
1. agitate waterjet propulsor, it is characterized in that: comprise water tube, reciprocating main shaft, S. A., blade, water tube comprises straight drum part and speaking trumpet part, in speaking trumpet part, offer inlet opening, the stub end of speaking trumpet part is fixed on one end of hull, the little head end of speaking trumpet part is connected with speaking trumpet part, reciprocating spindle nose is connected with S. A. middle part, two chutes are set on straight drum part inwall, the two ends of S. A. are arranged on respectively in two chutes, described blade comprises the first blade and the second blade, the first blade and the second blade pass are crossed connecting strap and are linked together, two shackles are set on connecting strap, connecting strap is placed on S. A. by shackle.
2. the waterjet propulsor of agitating according to claim 1, it is characterized in that: in the time that the first blade and the second blade launch completely, the first blade and the second blade and the seamless connection of straight drum part inwall, in the time that the first blade and the second blade close up completely, between the first blade and the second blade, form cavity.
3. the waterjet propulsor of agitating according to claim 1 and 2, is characterized in that: torsion spring is installed on S. A., and torsion spring two ends are fixedly connected with two shackles respectively.
4. the waterjet propulsor of agitating according to claim 1 and 2, is characterized in that: on connecting strap, be provided with draw-in groove, S. A. middle part arranges balancing needle.
5. the waterjet propulsor of agitating according to claim 3, is characterized in that: on connecting strap, be provided with draw-in groove, S. A. middle part arranges balancing needle.
6. the waterjet propulsor of agitating according to claim 1 and 2, is characterized in that: two shackles are according to connecting strap center asymmetric arrangement, and the width of the shackle at close connecting strap center is the width 2/3-3/4 away from the shackle at connecting strap center.
7. the waterjet propulsor of agitating according to claim 3, is characterized in that: two shackles are according to connecting strap center asymmetric arrangement, and the width of the shackle at close connecting strap center is the width 2/3-3/4 away from the shackle at connecting strap center.
8. the waterjet propulsor of agitating according to claim 4, is characterized in that: two shackles are according to connecting strap center asymmetric arrangement, and the width of the shackle at close connecting strap center is the width 2/3-3/4 away from the shackle at connecting strap center.
9. the waterjet propulsor of agitating according to claim 5, is characterized in that: two shackles are according to connecting strap center asymmetric arrangement, and the width of the shackle at close connecting strap center is the width 2/3-3/4 away from the shackle at connecting strap center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282495.7U CN203889038U (en) | 2014-05-29 | 2014-05-29 | Promoting water-jet propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282495.7U CN203889038U (en) | 2014-05-29 | 2014-05-29 | Promoting water-jet propeller |
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| CN203889038U true CN203889038U (en) | 2014-10-22 |
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| CN201420282495.7U Active CN203889038U (en) | 2014-05-29 | 2014-05-29 | Promoting water-jet propeller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104015909A (en) * | 2014-05-29 | 2014-09-03 | 哈尔滨工程大学 | Agitating water jet propeller |
| CN107776860A (en) * | 2017-10-23 | 2018-03-09 | 大连海事大学 | A kind of bin propeller peculiar to vessel |
-
2014
- 2014-05-29 CN CN201420282495.7U patent/CN203889038U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104015909A (en) * | 2014-05-29 | 2014-09-03 | 哈尔滨工程大学 | Agitating water jet propeller |
| CN104015909B (en) * | 2014-05-29 | 2017-01-11 | 哈尔滨工程大学 | Agitating water jet propeller |
| CN107776860A (en) * | 2017-10-23 | 2018-03-09 | 大连海事大学 | A kind of bin propeller peculiar to vessel |
| CN107776860B (en) * | 2017-10-23 | 2019-05-31 | 大连海事大学 | A kind of bin propeller peculiar to vessel |
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