CN101962071A - Nozzle propeller for ships - Google Patents
Nozzle propeller for ships Download PDFInfo
- Publication number
- CN101962071A CN101962071A CN2010102349875A CN201010234987A CN101962071A CN 101962071 A CN101962071 A CN 101962071A CN 2010102349875 A CN2010102349875 A CN 2010102349875A CN 201010234987 A CN201010234987 A CN 201010234987A CN 101962071 A CN101962071 A CN 101962071A
- Authority
- CN
- China
- Prior art keywords
- screw propeller
- nozzle
- fin
- guiding
- propeller
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
- B63H5/15—Nozzles, e.g. Kort-type
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Hydraulic Turbines (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Compared with a prior nozzle propeller, in order to increase the speed or the hauling force when realizing the same power of a motor, in a ship, especially in an inland vessel and a towboard, a nozzle propeller (100) comprises a fin system and a fixation nozzle (10), wherein the propeller (100) is mounted on a bearing (13) by using a propeller axle (11) and the guide fins (14,17,18,19,21,22,23,24,25,26,27) are arranged by the following way: the number of the guide fins (14,17,18,19,21,22,23,24,25,26,27) arranged on the upwelling side (28) of the nozzle propeller (100) is larger than the number of the guide fins (14,17,18,19,21,22,23,24,25,26,27) arranged on the downwards turning side (28) of the nozzle propeller (100) and/or the guide fins (14,17,18,19,21,22,23,24,25,26,27) are arranged to form an asymmetry fin system.
Description
Technical field
The present invention relates to a kind of nozzle screw propeller that is used for boats and ships,, perhaps have around screw propeller, the fixing not swivel nozzle and the boats and ships of fin system in particular for coastal waters canoe, towboat and river boat.Described nozzle screw propeller further comprises the fixedly screw propeller that is centered on by nozzle, is also referred to as " marine propeller " in works and expressions for everyday use.
Background technology
Ship, especially boats and ships, the driver element called after nozzle screw propeller that comprises the screw propeller that nozzle centered on or surrounded that is configured to nozzle ring.Described nozzle ring is also referred to as " the special nozzle of section ".At this moment, be arranged in that the screw propeller of nozzle interior is set to fix.Generally speaking, in the prior art, nozzle ring fixedly installs around the nozzle screw propeller of screw propeller.In order to control boats and ships, have the manipulation facility, the especially rudder that add in the described nozzle screw propeller of static jet, must be arranged in the screw propeller backwash, promptly from the ship running direction, be positioned at the nozzle propeller.In addition, the nozzle screw propeller is known in the prior art, and wherein, nozzle is rotatable around the fixedly screw propeller of the portion of setting within it.Described rotatable nozzle screw propeller can be used to control ship so that can be omitted selectively such as the additional manipulation system of rudder.
Summary of the invention
The present invention relates to the nozzle screw propeller with static jet specially, and does not relate to the nozzle screw propeller with rotatable nozzle.
Nozzle or nozzle ring have the function that improves driving thrust.At this on the one hand, described nozzle screw propeller frequently is used for towboat, delivery ship and the like, and they must each all produce high thrust.In this case, be configured to the normally most advanced and sophisticated tapered taper pipe of nozzle of nozzle ring, it has formed nozzle wall.Because pipe is tapered towards the boats and ships stern, the nozzle screw propeller can pass to ship with additional thrust need not to increase under the situation of engine performance.Except strengthening propulsion quality, also further reduced pitching in the process of sailing across a sea, the result is that deep-sea medium velocity loss reduces, stationarity is improved.Because the proper drag of the special nozzle of nozzle screw propeller or section is along with the approximate secondary ground of the raising of speed of the ship in meters per second improves, their advantage especially effective (towboat, fishing boat etc.) in the slow-footed boats and ships that must produce big propeller thrust.
Nozzle screw propeller peculiar to vessel can be learnt from patent US2139594.Described system has used the special nozzle of a kind of so-called section.But, to compare with general nozzle screw propeller, the special nozzle of described section is not fixed, but is set to and can pivots around screw propeller by means of rudder post.In order to improve the function of rudder, from the main flow direction of the special nozzle of described section, the fin that horizontal direction and vertical direction are aimed at is arranged on the back of described screw propeller.When revolution, for the same rudder function of strengthening the special nozzle of described section of rotatable or pivot, two fins are arranged on the place ahead of described screw propeller, described fin is fixed in described nozzle and stretches into described nozzle interior, from viewgraph of cross-section, it is established relatively and all is positioned in either case on the vertical center axis of described nozzle screw propeller.
From patent DD267383A3, influence the guide piece of current in single screw or the multiple propeller inland navigation vessel as can be known.Described patent disclosure following a kind of setting, it comprises the mono-that is vertically set on below the described prop shaft, relatively large preceding eddy current fin or guiding fin, and two existing propeller bracket arms.Described patent has been described the leaning angle with respect to the ingress edge of the empennage of at least 20 ° of stationary planes.Longshore current to the actual area on the circular plane of described screw propeller on, single empennage has formed a circumferential section with respect to its hand of rotation, as eddy current before the described screw propeller fwd, the result, described screw propeller is more actively operation and heavy burden more in an orderly manner in rotary course.
The nozzle screw propeller that the purpose of this invention is to provide the described type that a kind of front described in detail, than known nozzle screw propeller, under identical engine power, it can improve speed or improve towing cable power.Can also realize further that more water more successfully is directed flowing on the described whole propeller, thus can fuel saving under identical engine power.
The fin system of this purpose one or more by comprising (preceding eddy current) guiding fin realizes, described a plurality of fin along screw current to direction be arranged on the place ahead of described screw propeller, make in this way, more guiding fins are arranged on the screw propeller of described nozzle screw propeller and turn on the side, rather than turn on the side under the screw propeller of described nozzle screw propeller.
The present invention is based on following discovery, promptly be used for (preceding eddy current-) fin system of nozzle screw propeller, the special nozzle of section especially, described system especially advantageously improves tow rope power, exactly, is in the layout of above-mentioned guiding fin.Because this layout of guiding fin has realized that towing cable power has improved 10% in the described fin system, power-saving has reached 10%.
Term " turns over side on the screw propeller of described nozzle screw propeller " and is interpreted as a side of described nozzle screw propeller, and in viewgraph of cross-section, on this side of described nozzle screw propeller, when to overtake, described screw propeller forwards the top to from the bottom.Therefore, described screw propeller turns over side and then forwards the bottom from the top under screw propeller.Thereby turning over and descend to turn over side on the described screw propeller is that virtual internal vertical line of centers separates by one from viewgraph of cross-section.In this context, the described guiding fin that forms described fin system is at the current deflecting face that is interpreted as connecting element that is arranged on the described nozzle screw propeller, and affects the current of described screw current.Described guiding fin is arranged on the described nozzle screw propeller usually regularly.A guiding fin layout of turning on described screw propeller on the side is construed as on viewgraph of cross-section, and the substantial portion of described guiding fin or described at least guiding fin is arranged on the described screw propeller of described nozzle screw propeller and turns on the side.Equally also be applied to similarly turn on the side under described.
The inflow current of described screw propeller are subjected to the interference of described ship housing.Therefore, produce eddy current by the described guiding fin that is arranged on described screw propeller the place ahead, described screw propeller is arranged in the screw propeller that makes with the guiding fin is not set and compares, and forms less the reversing of described stream in the back of screw propeller described in the described screw propeller adverse current zone.Following situation does not surprisingly also appear, if when turning on the side on the described screw propeller that promptly has at least a guiding fin to be arranged on, compare when turning over side under the described screw propeller that is arranged on described nozzle screw propeller, reverse especially little described in the described screw propeller adverse current.Because comprise one or more guiding fins, arrange to constitute turning on the described screw propeller guiding fin to be set on the side and under described screw propeller, to turn over according to the fin system of minimum of the present invention the guiding fin is not set on the side according to fin of the present invention system.In this minimum fin system, a described guiding fin should integrally be arranged on the described screw propeller and turn on the side.Be arranged on and turn on the described screw propeller and turn under side and the screw propeller between the side guiding fin of the vertical center line of the described nozzle screw propeller longitudinal axis (promptly with respect to), according to being considered in this situation of the present invention or not (screw propeller turns over side up with under the screw propeller) on the described both sides or on both sides.If the guiding fin arbitrarily is provided with, it can not be arranged on the side fully so, but its most of zone belongs to this side with it for the purposes of the present invention on a side.
Described guiding fin or fin should be simultaneously distinguish with pure nozzle screw propeller preventive device, for example only are used to prevent that object from entering grill-protected or its analogue of described nozzle screw propeller.Unlike pure grill-protected, guiding fin or fin are the spigot surfaces that flows to that influences the flow direction significantly.
The described guiding fin that forms described fin system is arranged near the described nozzle screw propeller.More easily, described guiding fin is arranged on the described nozzle the inside of described nozzle screw propeller at least partly.
Advantage of the present invention is for improving speed and towing cable power under identical engine power.As a result, efficient is improved.
When speed was identical with towing cable power, it also was corresponding may reducing required engine power.The result is exactly that the saving of fuel and driving engine purchase cost becomes possibility.
In addition, because the preceding eddy current by the generation of described fin system, realized the higher net effciency of described screw propeller-nozzle-guiding fin system.
Because more water fluidly guides in an advantageous manner to described whole propeller or described whole propeller, under identical engine power, can save fuel up to 10%.
The present invention also can be used for shallow water, and the fender guard that described screw propeller additionally is provided is to avoid the destruction of external object.
Be distributed in described screw propeller alternatively or side by side with respect to described guiding fin and turn on the side up with under the screw propeller, the described guiding fin of described fin system also can become the mode of a kind of asymmetric fin system to arrange with described guiding fin-shaped.In this case, asymmetric with at the arrangement angle of the described guiding fin of described screw propeller arbor line and/or such as length profile, section cross section equidimension is relevant.With arrange under the relevant asymmetric situation at the described angle of described propeller axis, from the radial direction of described prop shaft, described independent guiding fin spool between be provided with the angle of cutting apart unevenly.If as axis of symmetry, so also can have asymmetric arrangement at the vertical center axis of nozzle screw propeller described in the described nozzle screw propeller viewgraph of cross-section.Simultaneously, this axis of symmetry turns over side separately with described nozzle screw propeller towards upper and lower.Therefore, produced a kind of suitable actv. fin system with the mode of a kind of easy setting and arrangement and method.In most of the cases, turn on the described screw propeller on the side than turning over side under the described screw propeller and be provided with more that the fin system of the guiding of manying fin also can be asymmetric.
In favourable further developing of the present invention, comprise that also each guiding fin-shaped becomes a connecting element, the one end is fastened on the described nozzle inner walls surface, and its other end is fixed on tail pipe or the bearing.Described design bearing is for being used to assemble described prop shaft, and it is arranged near the described screw propeller easily.Described bearing can form by for example so-called tail pipe.In this specific embodiment, each of described guiding fin all is set to the fixedly connecting element between bearing and nozzle inner walls.Can realize by any suitable interconnection technique well known in the prior art with being connected of described bearing or described nozzle, be specially welding method.Alternatively or side by side, fastening on the described nozzle inner walls, the fastening described nozzle front side that also can be arranged on.
If described fin or guiding fin are arranged in the inner space of described nozzle screw propeller or described nozzle fully, then have further preceence.In principle, the part of described guiding fin can be arranged on the outside in described nozzle interior space.But the experiment that the applicant did shows that under most of applicable cases on fluid technique, preferred described guiding fin is arranged in the interior volume that is surrounded by described nozzle fully.
As already noted, include only one on the described fin system principle at least and be arranged on the guiding fin that turns on the described screw propeller on the side fully.But advantageously, should there be at least three guiding fins in each system.Wherein, at least two guiding fins are arranged on the described screw propeller and turn on the side.
A preferred embodiment of the present invention is that described fin system has three to seven guiding fins, and wherein, two to four guiding fins can be arranged on the described screw propeller and turn on the side, and one to three guiding fin can be arranged under the described screw propeller and turn on the side.
Very advantageously be to pass wide zone on the pressure side on fluid technique if each guiding fin has a bandy suction side (Saugseite) and one open and flatly.This promptly produces a representative type profile raised panel, can be used for for example wing of aircraft.
The great majority guiding fin that uses also allows described guiding fin to have different shape of cross sections.Use this method, flowing of described nozzle interior can further be optimized.
If described guiding fin is provided with in the mode that has a different angle of attack with respect to described prop shaft, then also is favourable.The optimization of preceding eddy current also becomes possibility here.
The present invention is applicable to the single screw system.But, be used for the multiple propeller system and also have cooresponding preceence.This multiple propeller system generally includes the nozzle screw propeller with opposite hand of rotation of two settings adjacent one another are.Therefore, the described fin system of two nozzle screw propellers can mirror images of each other be provided with symmetrically.
Be provided with the propeller bracket arm in the more favourable embodiment of the present invention, it is designed to be used for producing preceding eddy current.By this method, the further raising of thrust is achieved.The propeller bracket arm is arranged to be used for supporting described tail pipe or described nozzle screw propeller usually, and firmly is connected with described hull.In the present embodiment, the part zone that is arranged on described nozzle interior is especially seen from flow direction at least a portion zone of described propeller bracket arm, can be set to the guiding fin on the meaning of the present invention.Different settings can be carried out in the remainder zone of described propeller bracket arm, also can for example have a different profile.Yet in principle, described propeller bracket arm can from start to finish have same profile, and becomes identical angle of attack setting with respect to described prop shaft.Use this method, structure of the present invention is further simplified, and has been used as the guiding fin because be provided for supporting by any way the described propeller bracket arm of described nozzle screw propeller.
Nozzle screw propeller according to the present invention is used for the coastal waters canoe, and towboat or river boat have remarkable preceence.In these boats and ships, two adjacent nozzles preferably are arranged on stern area.Use the nozzle screw propeller in river boat mostly, therefore, the present invention also is suitable for them.
Description of drawings
Exemplary embodiment of the present invention is explained in detail with reference to accompanying drawing, wherein, has described favourable further developing and identical advantage of the present invention.In the accompanying drawings, schematically:
Fig. 1 shows the section-drawing of nozzle screw propeller,
Fig. 2 shows the multiple propeller arrangement that each nozzle screw propeller is provided with three guiding fins,
Fig. 3 shows the view of outside action that each nozzle screw propeller is provided with the multiple propeller of seven guiding fins,
Fig. 4 shows the section-drawing of guiding fin; And
Fig. 5 shows the cross section view that another kind of sign has the nozzle screw propeller of guiding fin section.
Reference numerals list:
100 nozzle screw propellers
10 nozzles
11 prop shafts
12 screw propellers
13 bearings
14, turbine guide fin before the 14a
Turbine guide fin outer end before 15
Turbine guide fin the inner before 16
17a, 18a, the preceding turbine guide fin of 19a A side
17b, 18b, the preceding turbine guide fin of 19b B side
The axis of 18 prop shafts
19 guiding fin line of centerss
20 hulls
21to 25 guiding fins
26 first screw propeller trailing arms
27 first screw propeller trailing arms
Turn over side on 28 screw propellers
Turn over side under 29 screw propellers
32 guiding fins
The 32a suction side
32b on the pressure side
The 32c stream interface that makes progress
The downward stream interface of 32d
33 hand of rotation
34 vertical center axis
The specific embodiment
Fig. 1 shows and is used for boats and ships, is particularly useful for river boat or towboat, nozzle screw propeller 100.Nozzle screw propeller 100 comprises static jet 10 and the fin system that will elaborate hereinafter, and wherein, described nozzle uses the special nozzle of so-called Cole to be used for increasing towing cable power.The special nozzle of Cole can be by for example US2, and 139,594 learn, therefore are not described in detail.In axial direction (elevation profile) has been shown in the diagram of Fig. 1 passed the longitudinal profile view of nozzle screw propeller 100.For the sake of clarity, the first half that has only shown the nozzle screw propeller.
Described nozzle screw propeller 100 comprises conveyor screw or screw propeller 12, and it utilizes the screw shaft 11 of self to be installed on the bearing 13 that is configured to tail pipe.Guiding fin 14 has been shown among Fig. 1.Described guiding fin is designed to before screw propeller 12 places produce eddy current thereby is known as (preceding eddy current) lead fin 14 or fin." guiding fin " or the title of " spigot surface " also are applicable to " fin ".The title of " eddy current fin before the nozzle " also is available.Screw propeller 12 also can be known as " marine propeller ".(preceding eddy current) guiding fin 14 streamwises are arranged on screw propeller 12 front ends.
(preceding eddy current) guiding fin 14 forms a connecting element, thereby securely is fixed on the described nozzle screw propeller.As shown in Figure 1, an end 15 of (preceding eddy current) guiding fin 14 is fixed on the inside face of nozzle 10, and the other end is fixed on the bearing 13.
Fig. 1 also shows (preceding eddy current) guiding fin 14 and how to utilize first cross section 14a to expand to inner space and second outside that cross section 14b extends nozzle 10 of nozzle.In the longitudinal section view of Fig. 1, guiding fin 14 has roughly vertical inward flange that ends at interior cross section 14a and the outward flange that ends at outer cross section 14b from top to bottom obliquely, promptly is positioned at the outside of nozzle 10, and at the front end face of upper area near nozzle 10.
Guiding fin 14 is arranged as follows, and promptly topside roughly navigates by water along the direction of propeller flow direction or prop shaft 11, to such an extent as to the narrow edge of guiding fin 14 front portions places current basically.Depend on the shock angle of guiding fin 14 with respect to prop shaft 11, two planes of guiding fin 14 place current more or less.
Fig. 2 shows the hull 20 of boats and ships, wherein is provided with nozzle screw propeller 100 in the A of hull 20 side, and nozzle screw propeller 100 has a plurality of, is three (preceding eddy current) guiding fin 17a, 18a and the fin system of 19a especially.Nozzle screw propeller 100 in the B of hull 20 side has three (preceding eddy current) guiding fin 17b, 18b and 19b equally.Described system design is the twin screw system, therefore belongs to the multiple propeller type.
Three guiding fin 17a, 18a and 19a are arranged to two guiding fin 17a, 18a and are located at and turn on the side 28 on the screw propeller and guiding fin 19a is located under the screw propeller and turns on the side 29.At the screw propeller that is arranged in A side and B side, all be provided with Reference numeral and be 33 arrow, be used for representing the hand of rotation separately of nozzle screw propeller when hull 20 travels forward or screw propeller 12, two screw propellers 12 all from the lining to inner rotary, be the screw propeller 12 anticlockwise directions rotation of A side, the screw propeller right-hand revolution of B side simultaneously.In addition, the vertical centre axis of indicating in each nozzle screw propeller 100 34 is divided into turning on the screw propeller at the center of passing nozzle screw propeller 100 and with nozzle screw propeller 100 and turns over side 29 under side 28 and the screw propeller.Because the hand of rotation 33 of two nozzle screw propellers 100 is opposite, each of turning over side 28 on the screw propeller is all towards middle heart setting, and turn over side 29 under the screw propeller each all be provided with toward the outer side.Therefore, two screw propellers on turn over side 28 and turn over side 29 down by half nozzle screw propeller 100 formation.Independent guiding fin 17a, 18a and 19a or 17b, 18b close among the 19b each all point to the inside face direction of inboard or nozzle 10 along the outside of bearing 13.In the diagram shown in Figure 2, two guiding fins place each nozzle screw propeller 100 to be placed in the mode of turning over side 28 fully respectively.Similarly, the 3rd guiding fin turns in the side 29 under being placed in fully in each nozzle screw propeller 100.The set-up mode of this guiding fin 17a, 18a and 19a or 17b, 18b and 19b caused stream before the screw propeller (
) optimum rotation, it causes the little distortion of the anti-stream of screw propeller in turn.This guiding fin 17a, 18a and 19a or 17b, 18b and 19b are arranged to can see their narrow avris from the cutaway view of Fig. 2 that promptly topside roughly along the propeller flow direction, that is to say, along the longitudinal direction of nozzle screw propeller.The length of graphic all spigot surfaces (17a, 18a, 19a, 17b, 18b and 19b) is approximately identical.
In addition, (preceding eddy current) guiding fin 17a, 18a and 19a or 17b, 18b and 19b, i.e. the guiding fin of A side and B side is arranged to form asymmetric fin system.This asymmetric be by turning over the guiding fin that side 29 is provided with varying number under side 28 and the screw propeller and obtain turning on the screw propeller when vertical centre axis 34 is used as axis of symmetry.In addition, guiding fin 17a is unequal to the angle between the 19b to 19a and 17b.Thereby for example, guiding fin 17a and 18a are significantly less than the angle that leads between fin 17a and 19a and 18a and the 19b about the angle at the intersection point place of prop shaft in the nozzle screw propeller 100 of A side.In the nozzle screw propeller 100 of B side, similar situation is arranged.
Fig. 3 shows the twin screw system with seven guiding fins 21 to 28 of another example, wherein, for simplicity, has only provided the Reference numeral of A side here.The structure of the nozzle screw propeller 100 of B side and the setting similarly of A side.Two guiding fins 21,22 are arranged under the screw propeller and turn over side, and three guiding fins 24,25,27 are arranged on and turn over side on the screw propeller simultaneously.In addition, guiding fin 23,26 roughly aligns with vertical centre axis 34, and the fin 26 that promptly leads extends up to nozzle inner walls vertically upward from bearing 13, and guiding fin 23 extends up to nozzle inner walls vertically downward from bearing 13.Therefore, in two fins 23,26 one is assigned to and turns over 28, one of sides on the screw propeller and be assigned to and turn over side 29 under the screw propeller, is set to and turns over side 28 on the screw propeller to such an extent as to have four fins, has three fins and is set to and turns over side 29 under the screw propeller.In principle, guiding fin 23,26 also can not be assigned to these two zones, turns over side 28 on the screw propeller to such an extent as to there are three fins to be set to, and has two fins to be set to and turns over side 29 under the screw propeller.Here only the important point is to be arranged on more than a guiding fin at least to turn on the screw propeller in the side 28.Guiding fin 26,27 additionally has the effect of screw propeller trailing arm, and bearing 13 is connected on the hull 20.In nozzle 10 outsides, screw propeller trailing arm 26,27 needn't have the profile of guiding fin.Yet in nozzle 10 inside, guiding fin profile entire length ground forms.Can determine that from Fig. 2 and Fig. 3 in all guiding fins each all 12 is arranged on the front portion of screw propeller along water (flow) direction.
Guiding fin 14,17a, 18a, 19a or 17b shown in Fig. 1 to Fig. 3,18b, 19b, 21 to 24 and 26,27 can have different cross-sectional profiles.
The turbine guide fin has the different angles of attack usually with respect to the screw propeller longitudinal axis before each.
Described system moves according to following principle, promptly in the current in the base region in the circular zone of screw propeller, circumferential section produces the preceding eddy current as screw propeller front end on the direction opposite with the screw propeller hand of rotation, therefore, make screw propeller more fully operation and current more stably when rotated.
The present invention is not limited to such example, and eddy current also is possible with another system that increases towing cable power and speed before being used for producing before the static jet of towboat and coastal waters boats and ships.
An also possible feature that is that embodiment is shown or describes and another embodiment is shown or another characteristics combination of describing.This is particularly useful for the screw propeller trailing arm according to Fig. 3 layout.
Under the situation of three fins, the asymmetric meaning is that they are arranged not according to 120 ° of identical angles.Under the situation of four fins, angle is divided into and departs from 90 ° or the like.
The viewgraph of cross-section of an embodiment of guiding fin 32 has been shown among Fig. 4, and guiding fin 32 can be used for the fin system according to nozzle screw propeller of the present invention.In Fig. 4, fin 32 has arc suction side 32a that is arranged on the top and the straight substantially 32b on the pressure side that relatively is provided with.The 32c on rounded surface is installed in the nozzle screw propeller and is placed in the current under the state, and promptly it is set at the screw propeller upstream, and approximate simultaneously sharp face 32d is set at the downstream of screw propeller.
Fig. 5 shows the cross section view with another embodiment of the nozzle screw propeller of the embodiment basically identical shown in Fig. 1.Different with the diagram of Fig. 1, the guiding fin 14 of embodiment disposes by this way among Fig. 5, promptly places fully by nozzle 10 or the space of nozzle ring encirclement or the inner space of nozzle 10, does not stretch out nozzle 10 or outstanding part.In this respect, the edge, front and back of the guiding fin 14 shown in the lateral plan of Fig. 5 is set to be parallel to each other, and wherein, front edge clearing end front edge about and nozzle 10 flushes.In addition, Fig. 5 shows another simple and easy cross section view that is positioned at the guiding fin 14a of the inside, nozzle 10 inner spaces equally, and is cut apart by screw propeller longitudinal axis 18 in the diagram of Fig. 5.The cross-section section of fin 14a of leading as can be seen is positioned on the prop shaft obliquely.In order to explain this situation, the cross-section section of guiding fin 14a independently is presented at the right side of nozzle screw propeller again and is positioned at same position about prop shaft 18 particularly.And, show the cross-section section that the line of centers 19 that becomes angle of attack α to intersect with prop shaft passes guiding fin 14a respectively.In the preferred embodiment of the invention,, these angles of attack α can be provided with according to guiding fin position relation separately to such an extent as to changing preferred angle of attack α with the different guiding fin of nozzle screw propeller 100.
Claims (15)
1. a nozzle screw propeller (100), be used for ship, be particularly useful for the coastal waters canoe, towboat and river boat, it comprises the fin system, static jet (10) and screw propeller (12), wherein, described screw propeller (12) is arranged in the described nozzle (10), wherein, described fin system comprises that streamwise is arranged on one or more guiding fins (14 of described screw propeller (12) front end, 17,18,19,21,22,23,24,25,26,27), and described guiding fin (14,17,18,19,21,22,23,24,25,26,27) be provided with as follows, it is described guiding fin (14,17,18,19,21,22,23,24,25,26,27) be arranged on turn on the screw propeller of described nozzle screw propeller (100) on the side (28) more than turning on the side (29) under the screw propeller that is arranged on described nozzle screw propeller (100), and/or described guiding fin (14,17,18,19,21,22,23,24,25,26,27) be arranged to described guiding fin-shaped and become asymmetric fin system.
2. nozzle screw propeller as claimed in claim 1 is characterized in that,
Each guiding fin (14,17,18,19,21,22,23,24,25,26,27) forms a connecting element, the one end is fastened on described nozzle (10) inner wall surface, the other end especially is configured for assembling on the tail pipe of prop shaft (11) of described screw propeller (12) on bearing (13).
3. nozzle screw propeller as claimed in claim 2 is characterized in that,
Described guiding fin (14,17,18,19,21,22,23,24,25,26,27) is arranged on the inner space of described nozzle (10) fully.
4. each described nozzle screw propeller in the claim as described above is characterized in that,
Described nozzle screw propeller (100) comprises at least three guiding fins (17,18,19), is preferably three to seven guiding fins.
5. nozzle screw propeller as claimed in claim 4 is characterized in that,
Two to four are arranged on and turn on the described screw propeller on the side (28) in the described guiding fin (14,17,18,19,21,22,23,24,25,26,27), and one to three is arranged on and turns under the described screw propeller on the side (29).
6. each described nozzle screw propeller in the claim as described above is characterized in that,
Described fin system comprises odd number guiding fin (14,17,18,19,21,22,23,24,25,26,27).
7. each described nozzle screw propeller in the claim as described above is characterized in that,
Described screw propeller (100) comprises three guiding fins (17,18,19), wherein the first and second guiding fins (17,18) are being 50 ° to 110 ° each other, be preferably 60 ° to 100 °, be preferably 70 ° to 90 ° angle setting especially, in the described first and second guiding fins (17,18) each all has 125 ° to 155 ° with respect to the 3rd guiding fin (19), be preferably 130 ° to 150 °, be preferably 135 ° to 145 ° angular distance especially.
8. as each described nozzle screw propeller in the claim 1 to 6, it is characterized in that,
Described nozzle screw propeller (100) comprises four guiding fins (21,22,23,24), and it all is arranged in about 180 ° angular range, is particularly all turning on the side (28) on the described screw propeller of described nozzle screw propeller (100).
9. each described nozzle screw propeller in the claim as described above is characterized in that,
Each guiding fin (14,17,18,19,21,22,23,24,25,26,27) has outwardly-bent, particularly the suction side of circular arc (30) and roughly open and flat on the pressure side (31).
10. each described nozzle screw propeller in the claim as described above is characterized in that described guiding fin (14,17,18,19,21,22,23,24,25,26,27) has different shape of cross sections.
11. each described nozzle screw propeller in the claim is characterized in that as described above, described guiding fin (14,17,18,19,21,22,23,24,25,26,27) is provided with the different angle of attack (α) radially with respect to described prop shaft.
12. each described nozzle screw propeller in the claim is characterized in that as described above, is set to the multiple propeller system.
13. each described nozzle screw propeller in the claim is characterized in that as described above, described nozzle (10) is designed to the special nozzle of section.
14. each described nozzle screw propeller in the claim is characterized in that as described above, is provided with one or more propeller bracket arms (26,27), it is set to the fin that leads at least a portion zone separately.
15. a ship, especially coastal waters canoe, towboat or river boat have each described nozzle screw propeller in one or more claims as described above.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202009009899U DE202009009899U1 (en) | 2009-07-23 | 2009-07-23 | Nozzle propellers for ships |
| GE202009009899.0 | 2009-07-23 | ||
| EP10170015.1 | 2010-07-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101962071A true CN101962071A (en) | 2011-02-02 |
| CN101962071B CN101962071B (en) | 2016-12-14 |
Family
ID=
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI488772B (en) * | 2012-03-23 | 2015-06-21 | ||
| CN104955724A (en) * | 2013-01-31 | 2015-09-30 | 罗尔斯-罗依斯海运有限公司 | Propulsion unit for maritime vessel including a nozzle exhibiting an exchangeable leading edge on the inlet of the nozzle |
| CN105829204A (en) * | 2014-11-18 | 2016-08-03 | 三菱重工业株式会社 | Twin skeg ship |
| CN105936332A (en) * | 2015-03-06 | 2016-09-14 | 贝克船舶系统有限及两合公司 | Arrangement for multi screw vessels comprising external propeller shafts as well as method for producing such an arrangement |
| CN115123507A (en) * | 2022-08-18 | 2022-09-30 | 江南造船(集团)有限责任公司 | Double-engine double-propeller ship and propeller mounting method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105134A (en) * | 1985-08-19 | 1987-02-18 | 霍尔明公司 | Rotating propelling unit |
| US5209642A (en) * | 1988-03-03 | 1993-05-11 | The United States Of America As Represented By The Secretary Of Transportation | Modified optimum pitch propeller |
| US5597245A (en) * | 1962-08-13 | 1997-01-28 | The United States Of America As Represented By The Secretary Of The Navy | Cavitation suppressing ducted propeller system |
| CN1960909A (en) * | 2004-04-30 | 2007-05-09 | 阿尔斯托姆公司 | Marine engine assembly including a cabin mountable under a ship's hull |
| CN101092163A (en) * | 2006-06-20 | 2007-12-26 | 阿克亚茨股份有限公司 | Electric propulsion system for a ship and ship equipped with same |
| JP2008174115A (en) * | 2007-01-19 | 2008-07-31 | Daewoo Shipbuilding & Marine Engineering Co Ltd | Unsymmetrical front flow fixed blade of vessel |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5597245A (en) * | 1962-08-13 | 1997-01-28 | The United States Of America As Represented By The Secretary Of The Navy | Cavitation suppressing ducted propeller system |
| CN86105134A (en) * | 1985-08-19 | 1987-02-18 | 霍尔明公司 | Rotating propelling unit |
| US5209642A (en) * | 1988-03-03 | 1993-05-11 | The United States Of America As Represented By The Secretary Of Transportation | Modified optimum pitch propeller |
| CN1960909A (en) * | 2004-04-30 | 2007-05-09 | 阿尔斯托姆公司 | Marine engine assembly including a cabin mountable under a ship's hull |
| CN101092163A (en) * | 2006-06-20 | 2007-12-26 | 阿克亚茨股份有限公司 | Electric propulsion system for a ship and ship equipped with same |
| JP2008174115A (en) * | 2007-01-19 | 2008-07-31 | Daewoo Shipbuilding & Marine Engineering Co Ltd | Unsymmetrical front flow fixed blade of vessel |
Non-Patent Citations (1)
| Title |
|---|
| 龚其福: "舶船推进装置节能新技术介绍(二)", 《船海工程》, no. 3, 31 December 1990 (1990-12-31), pages 52 - 53 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI488772B (en) * | 2012-03-23 | 2015-06-21 | ||
| CN104955724A (en) * | 2013-01-31 | 2015-09-30 | 罗尔斯-罗依斯海运有限公司 | Propulsion unit for maritime vessel including a nozzle exhibiting an exchangeable leading edge on the inlet of the nozzle |
| CN104955724B (en) * | 2013-01-31 | 2018-01-02 | 罗尔斯-罗依斯海运有限公司 | A kind of propulsion plant for being used to promoting and manipulating marine ships |
| CN105829204A (en) * | 2014-11-18 | 2016-08-03 | 三菱重工业株式会社 | Twin skeg ship |
| CN105829204B (en) * | 2014-11-18 | 2017-11-03 | 三菱重工业株式会社 | Double tail finses ship |
| CN105936332A (en) * | 2015-03-06 | 2016-09-14 | 贝克船舶系统有限及两合公司 | Arrangement for multi screw vessels comprising external propeller shafts as well as method for producing such an arrangement |
| CN112960092A (en) * | 2015-03-06 | 2021-06-15 | 贝克船舶系统有限公司 | Arrangement for a multi-propeller vessel comprising an outer propeller shaft and method for producing such an arrangement |
| CN115123507A (en) * | 2022-08-18 | 2022-09-30 | 江南造船(集团)有限责任公司 | Double-engine double-propeller ship and propeller mounting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202009009899U1 (en) | 2010-12-02 |
| KR20110010079A (en) | 2011-01-31 |
| JP2011025918A (en) | 2011-02-10 |
| EP2277772B1 (en) | 2012-05-23 |
| PL2277772T3 (en) | 2012-10-31 |
| EP2277772A1 (en) | 2011-01-26 |
| ES2388584T3 (en) | 2012-10-16 |
| KR101421319B1 (en) | 2014-07-18 |
| SG168500A1 (en) | 2011-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2535262B1 (en) | A propulsion arrangement in a ship | |
| US7452253B2 (en) | Propulsion system of marine vessel | |
| CN100348459C (en) | Cross anti-pitch rudder | |
| KR101421319B1 (en) | Nozzle propeller for ships | |
| CN101559828B (en) | Finned rudder | |
| US9073615B2 (en) | Propulsion arrangement in a ship | |
| US20110053441A1 (en) | Twin-skeg ship | |
| CN105829204A (en) | Twin skeg ship | |
| KR20140019704A (en) | Twin skeg vessel | |
| KR101225175B1 (en) | Propulsion apparatus and ship including the same | |
| KR20090110779A (en) | Rudder with attached fin | |
| KR101998285B1 (en) | Rudder for special ship | |
| CN101962071B (en) | The nozzle propeller of boats and ships | |
| KR101431497B1 (en) | Ship | |
| US8881666B2 (en) | Ship | |
| JP7107668B2 (en) | rudder | |
| KR102092559B1 (en) | Propulsion thruster for vessel | |
| EP2692628A1 (en) | Ship with a propeller and a rudder mounted in a recess, whereby the rudder is oriented towards the bow | |
| KR20160056470A (en) | A propulsion apparatus for ship | |
| EP2626290B1 (en) | Propulsion arrangement in a ship | |
| KR20230017270A (en) | A device that reduces the propulsion power required for waterborne vehicles | |
| KR101323795B1 (en) | Ship | |
| KR20180060210A (en) | ship | |
| KR20130012433A (en) | Rudder for ship and ship having the same | |
| AU2012269115A1 (en) | A propulsion arrangement in a ship |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1153708 Country of ref document: HK |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1153708 Country of ref document: HK |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20180723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |