CN113815831A - Double-layer diffusion and sawtooth tail edge integrated rim driving propeller - Google Patents

Double-layer diffusion and sawtooth tail edge integrated rim driving propeller Download PDF

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Publication number
CN113815831A
CN113815831A CN202111102315.3A CN202111102315A CN113815831A CN 113815831 A CN113815831 A CN 113815831A CN 202111102315 A CN202111102315 A CN 202111102315A CN 113815831 A CN113815831 A CN 113815831A
Authority
CN
China
Prior art keywords
booster
double
sawtooth
propeller
multiplier
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.)
Pending
Application number
CN202111102315.3A
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Chinese (zh)
Inventor
欧阳武
郑锐聪
陈海龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Hanrui Ship Propulsion System Co ltd
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Suzhou Hanrui Ship Propulsion System Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Hanrui Ship Propulsion System Co ltd filed Critical Suzhou Hanrui Ship Propulsion System Co ltd
Priority to CN202111102315.3A priority Critical patent/CN113815831A/en
Publication of CN113815831A publication Critical patent/CN113815831A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/22—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
    • B63H23/24—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/28—Other means for improving propeller efficiency
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Power Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a double-layer diffusion and sawtooth tail edge integrated rim driving propeller which comprises a multiplier component, a sawtooth type tail edge, a multiplier-to-multiplier connecting component, a stator winding and a rotor component. The booster component comprises a double-layer diffusion structure consisting of a primary booster and a secondary booster, the structure has the smallest sectional area in the middle of the guide pipe and larger sectional areas at two ends of the guide pipe, and can obviously accelerate the flow velocity of water flowing through the propeller blades; the design of the sawtooth-shaped tail edge greatly reduces the water flow noise; the driving mode of the wheel rim does not have complex shafting transmission, and the shafting vibration is reduced while the propelling efficiency is greatly improved. The invention has the advantages of improving the propulsion efficiency, reducing the noise, reducing the vibration and the like, and is particularly suitable for military ships with higher requirements on maneuverability and concealment.

Description

Double-layer diffusion and sawtooth tail edge integrated rim driving propeller
Technical Field
The invention belongs to the field of ship propellers, and particularly relates to an integrated rim driving propeller.
Background
Shaftless rim propellers are a completely new way of ship propulsion that has been proposed and developed in recent years. The traditional marine shafting propeller occupies a large cabin space due to the large size of a main engine and the long propulsion shafting, so that the space utilization rate is low. Meanwhile, the structure of the propulsion shafting is increasingly complex, so that the loss is increased in the energy transfer process, the transfer efficiency is reduced, the design difficulty and the construction cost of the ship are increased, and various defects of the traditional propeller enable people to aim at a novel shaftless propulsion system.
The shaftless propulsion system is a propulsion device which does not need to penetrate through a ship body, is innovated on the basis of a full-electric propulsion system, adopts a design different from the existing electric propulsion system, and avoids the defects of complex structure, large shafting occupation space, low transmission efficiency, easy failure and the like of a pod type, full-rotation type and other electric propulsion systems. The existing shaftless propeller has complex structure, low propelling efficiency and large vibration and noise during operation.
Disclosure of Invention
The invention aims to provide a rim-driven propeller with double-layer diffusion and sawtooth tail edges integrated, which can greatly improve the propelling efficiency of a shaftless propeller, reduce the running vibration and reduce the noise.
The technical scheme adopted by the invention is that the double-layer diffusion and sawtooth tail edge integrated rim driving propeller comprises a multiplier component, a stator winding, a rotor component and a bearing component; the multiplier assembly comprises a double-layer diffusion structure consisting of a primary multiplier and a secondary multiplier, wherein the primary multiplier and the secondary multiplier are both of a shape structure with the smallest sectional area in the middle and the large sectional areas on two sides, so that a larger flow speed ratio is formed; the tail end of the conduit of one of the primary booster and the secondary booster is provided with a sawtooth-shaped tail edge; or the tail ends of the conduits of the primary booster and the secondary booster are both provided with sawtooth-shaped tail edges.
Further, the rotor assembly comprises a permanent magnet, a rotor ring, a rotor blade, a blade plate and a permanent magnet protective layer, wherein the rotor blade is fixedly connected with the rotor ring through the blade plate; the permanent magnet protective layer is arranged between the stator winding and the rotor permanent magnet, and the rotor permanent magnet is prevented from being corroded by seawater.
The stator winding is arranged in a conduit of the primary booster close to the permanent magnet, the stator winding is connected with a power supply, and a stator protective layer for avoiding seawater erosion is further arranged on one side of the stator winding.
The conduits of the first-stage effect enhancer and the second-stage effect enhancer adopt a reducing and gradually expanding structure, the area of the structure at the middle section of the conduit is the smallest, and the sectional areas at the inlet and the outlet at the two ends of the conduit are large; a slotted hole is formed in the first-level booster guide pipe, and the stator winding is embedded in the slotted hole.
The rotor blades are fixed on the rotor ring through the blade plates and are arranged at the minimum position of the section of the first-stage booster conduit. When the propeller works, the rotor ring rotates to drive the paddle board to move to generate higher-speed water flow to be transmitted to the secondary effect enhancer, and the propelling efficiency is further improved.
The rotor assembly is fixed by a bearing assembly mounted on the inner wall of the primary booster. The bearing assembly comprises a thrust bearing and a radial bearing which are arranged on the inner wall of the first-stage multiplier guide pipe and play a role in supporting the rotor assembly.
As an improvement mode, the double-layer diffusion type and sawtooth tail edge integrated rim driving propeller further comprises an inter-multiplier coupling assembly which is used for fixedly connecting the conduits of the primary multiplier and the secondary multiplier and transmitting the thrust generated by the primary multiplier to the conduit of the secondary multiplier.
As an improvement mode, the double-layer diffusion type and sawtooth tail edge integrated rim driving propeller further comprises a rotating part arranged on the guide pipe of the secondary booster, and the other end of the rotating part is connected with a ship body to transmit generated thrust to the ship body.
As an improvement mode, the sawtooth-shaped tail edge adopts sawtooth structures with equal sizes and is arranged at the outlet of the guide pipe of the primary booster and/or the outlet of the guide pipe of the secondary booster, so that water flow fluctuation can be changed, and vibration and propulsion noise can be reduced.
The novel propeller creatively integrates the motor and the propeller, and when the propeller works, the rotor ring drives the paddle board to rotate, so that the cabin space occupied by the propulsion system is effectively reduced, the space utilization rate is improved, the propulsion efficiency of the ship is increased, and the vibration and the noise of the operation are reduced.
Compared with the prior art, the invention has the following main advantages:
1. the invention adopts the integrated double-layer diffusion type and sawtooth tail edge integrated rim driving propeller, highly integrates the motor, the propeller blades, the rudder and the bearing, has compact structure and improves the propelling efficiency by 9 percent, and compared with the existing propeller without the sawtooth tail edge, the propeller can reduce the wake flow fluctuation during the operation and obviously reduce the generated vibration and noise.
2. The booster component comprises a double-layer diffusion structure consisting of a primary booster and a secondary booster, the structure has the smallest sectional area in the middle of the guide pipe and larger sectional areas at two ends of the guide pipe, and the flow velocity of water flowing through the propeller blades can be obviously accelerated; the design of the sawtooth-shaped tail edge greatly reduces the water flow noise; the driving mode of the wheel rim does not have complex shafting transmission, and the vibration is reduced while the propelling efficiency is greatly improved.
3. The permanent magnet protective layer is arranged between the stator winding and the rotor permanent magnet, so that the rotor permanent magnet is prevented from being corroded by seawater; in addition, a stator protective layer for avoiding seawater erosion is arranged on one side of the stator winding. The design can greatly prolong the service life of the propeller, and the service life is prolonged by 30% compared with the service life of the existing shaftless propeller.
4. The multiplier assembly of the present invention utilizes a tapered and flared conduit that produces a greater flow rate than a single tapered conduit.
In conclusion, the invention has the advantages of improving the propulsion efficiency, reducing the noise, reducing the vibration and the like, and is particularly suitable for military ships with higher requirements on maneuverability and concealment.
Drawings
Fig. 1 is a general structural view of the propeller of the present invention.
Fig. 2 is a partially enlarged schematic view of a primary booster of the propeller of the present invention.
Figure 3 is a schematic view of the trailing edge of the multiplier assembly of the propeller of the present invention.
Fig. 4 is a schematic view of the flow movement of the propeller intake water of the present invention.
In the figure: 1. a first-level booster; 2. a secondary booster; 3. an inter-booster connecting assembly; 4. a rotor blade; 5. a sawtooth-shaped trailing edge; 6. a stator winding; 7. a permanent magnet; 8. a paddle board; 9. a rotor ring; 10. a primary booster conduit; 11. a thrust bearing; 12. a radial bearing; 13. a stator protection layer; 14. a permanent magnet protective layer; 15. a rotating member; 16. a horizontal axis;
Detailed Description
For a better understanding of the principles of the present invention, its structure and operation are explained in conjunction with the drawings. As shown in fig. 1 to 4, a dual-layer diffusion-type and sawtooth tail edge integrated rim driving propeller provided by the embodiment of the invention comprises a multiplier assembly, a stator winding 6, a rotor assembly and a bearing assembly; the booster component comprises a double-layer diffusion structure consisting of a first-stage booster 1 and a second-stage booster 2, the first-stage booster 1 and the second-stage booster 2 are tubular structures with the smallest sectional area in the middle and the large sectional areas on two sides, so that the flow velocity of water flowing into a propeller can be obviously accelerated, a large flow velocity ratio is formed, and the tail ends of the conduits of the first-stage booster and the second-stage booster are both provided with sawtooth-shaped tail edges 5.
As shown in fig. 2, the rotor assembly includes a permanent magnet 7, a rotor ring 9, a rotor blade 4, a blade plate 8, and a permanent magnet protective layer 14, wherein the rotor blade 4 is fixedly connected with the rotor ring 9 through the blade plate 8; the permanent magnet protective layer 14 is arranged between the stator winding 6 and the rotor permanent magnet 7, so that the rotor permanent magnet 7 is prevented from being corroded by seawater.
The rotor assembly is fixed by a bearing assembly mounted on the inner wall of the primary booster. The bearing assembly includes a thrust bearing 11 and a radial bearing 12 mounted to the inner wall of the primary booster duct 10 to support the rotor assembly.
The stator winding 6 is installed in a guide pipe of the primary booster 1 close to the permanent magnet 7, specifically, a slotted hole is formed in the guide pipe 10 of the primary booster, and the stator winding 6 is embedded in the slotted hole. The stator winding 6 is connected with a power supply, and a stator protective layer 13 for avoiding seawater erosion is further installed on one side of the stator winding 6. The plurality of rotor blades 4 rotate about a horizontal axis 16 of the primary multiplier 1 about the horizontal axis 16.
As shown in fig. 1 and 4, the ducts of the primary and secondary boosters 1 and 2 have a tapered and diverging structure, which has the smallest area at the middle section of the duct and the larger area at the entrance and exit at the two ends of the duct. FIG. 4 shows that the direction of the arrow is the water flow direction, which can obviously accelerate the flow velocity of water flowing through the propeller blades; the design of the sawtooth-shaped tail edge greatly reduces the water flow noise.
Double-deck diffusion type and sawtooth trailing edge integration rim drive propeller still include coupling assembling 3 between the increase ware for fixed connection the pipe of one-level increase ware 1 with second grade increase ware 2, and the transmission the thrust that the one-level increase ware produced arrives the pipe of second grade increase ware. And a rotating member 15 arranged on the conduit of the secondary booster, wherein the other end of the rotating member 15 is connected with the ship body and can rotate to transmit the generated thrust to the ship body.
The propeller during operation, rotor ring drive a plurality of rotor blades 4 rotatory, and during rivers were exported the way second grade increase ware from second grade increase ware entry and first grade increase ware respectively, the second grade increase ware pipe inner wall of grow is diminished earlier in the flow through, obviously accelerates the rivers velocity of flow of inflow, and coupling assembling 3 connects between the increase ware first grade increase ware 1 with the pipe of second grade increase ware 2 to through the rotating member on the second grade increase ware pipe, the hull is transmitted to the thrust that finally produces the propeller.
The structure of the double-layer diffusion type and sawtooth tail edge integrated rim driving propeller provided by the second embodiment of the invention is basically the same as that of the first embodiment, and the structure is not repeatedly described and comprises a booster component, a stator winding, a rotor component and a bearing component; the multiplier assembly comprises a double-layer diffusion structure consisting of a first-stage multiplier and a second-stage multiplier, wherein the first-stage multiplier and the second-stage multiplier are both in a shape structure with the smallest sectional area in the middle and the large sectional areas on two sides. Compared with the structure of the embodiment, the structure of the ship booster is characterized in that the tail end of one of the primary booster and the secondary booster is provided with the sawtooth-shaped tail edge, so that the number of the sawtooth-shaped tail edges can be arranged according to the size of a ship body during actual manufacturing, and the manufacturing cost is saved.
According to the double-layer diffusion type and sawtooth tail edge integrated rim driving propeller provided by the embodiment, the novel propeller is provided with the stator winding installed in the double-layer diffusion type multiplier with the sawtooth tail edge to drive the rotor ring of the propeller blade to rotate, can generate a faster water flow speed in the two-stage multiplier conduit and act on the propeller blade, and has the following outstanding effects compared with the existing propeller:
1. the invention adopts the integrated double-layer diffusion type and sawtooth tail edge integrated rim driving propeller, highly integrates the motor, the propeller blades, the rudder and the bearing, has compact structure, and can reduce the wake flow fluctuation and obviously reduce the generated vibration and noise when compared with the existing propeller without the sawtooth tail edge.
Compared with the existing shaftless driving propeller, the propeller has the advantage that the propelling efficiency is improved by 9 percent. Compared with the existing propeller without the sawtooth tail edge, the propeller has the advantages that the generated vibration is reduced by 4%, and the noise is obviously reduced by 7%.
2. The booster component comprises a double-layer diffusion structure consisting of a primary booster and a secondary booster, the structure has the smallest sectional area in the middle of the guide pipe and larger sectional areas at two ends of the guide pipe, and the flow velocity of water flowing through the propeller blades can be obviously accelerated; the design of the sawtooth-shaped tail edge greatly reduces the water flow noise; the driving mode of the wheel rim does not have complex shafting transmission, and the vibration is reduced while the propelling efficiency is greatly improved.
3. The permanent magnet protective layer is arranged between the stator winding and the rotor permanent magnet, so that the rotor permanent magnet is prevented from being corroded by seawater; in addition, a stator protective layer for avoiding seawater erosion is arranged on one side of the stator winding. The design can greatly prolong the service life of the propeller, and the service life is prolonged by 30% compared with the service life of the existing shaftless propeller.
In conclusion, on the basis of the existing shaftless rim driven propeller, the invention adopts the reducing and gradually expanding type synergistic device conduit and the sawtooth type tail edge structure, greatly improves the propelling efficiency of the propeller and reduces the vibration and noise of the propeller during operation.

Claims (8)

1. The double-layer diffusion and sawtooth tail edge integrated rim driving propeller is characterized by comprising a multiplier component, a stator winding (6), a rotor component and a bearing component; the synergist component comprises a double-layer diffusion structure consisting of a primary synergist (1) and a secondary synergist (2), wherein the primary synergist (1) and the secondary synergist (2) are both of a shape structure with the smallest sectional area in the middle and large sectional areas on two sides, so that a larger flow speed ratio is formed; the tail end of the conduit of one of the primary booster (1) and the secondary booster (2) is provided with a sawtooth-shaped tail edge (5); or the tail ends of the conduits of the primary booster (1) and the secondary booster (2) are both provided with sawtooth-shaped tail edges (5).
2. The double-layer diffusion and sawtooth tail edge integrated rim driving propeller as claimed in claim 1, wherein the rotor assembly comprises a permanent magnet (7), a rotor ring (9), rotor blades (4), blade plates (8) and a permanent magnet protective layer (14), and the rotor blades (4) are fixedly connected with the rotor ring (9) through the blade plates (8); the permanent magnet protective layer (14) is arranged between the stator winding (6) and the permanent magnet (7), and the permanent magnet (7) of the rotor is prevented from being corroded by seawater.
3. The double-layer diffusion and sawtooth tail edge integrated rim driving propeller as claimed in claim 1, characterized in that the stator winding (6) is installed in the conduit of the primary booster (1) close to the permanent magnet (7), the stator winding (6) is connected with a power supply, and a stator protective layer (13) for preventing seawater erosion is installed on one side of the stator winding (6).
4. The double-layer diffusion and sawtooth tail edge integrated rim driving propeller as claimed in claim 1, characterized in that the conduits of the primary booster (1) and the secondary booster (2) adopt a reducing and gradually expanding structure, the structure has the smallest area at the middle section of the conduit and has larger cross sections at the inlet and the outlet at the two ends of the conduit; a slotted hole is formed in the first-level booster guide pipe (10), and the stator winding (6) is embedded in the slotted hole.
5. Double-layer diffusion and sawtooth tail edge integrated rim driven propeller according to claim 2, characterized in that the rotor blades (4) are fixed to the rotor ring (9) by blade plates (8) and mounted at the smallest cross section of the primary booster duct (10).
6. The double layer diverging and serrated trailing edge integral rim driven impeller as claimed in claim 1 wherein the rotor assembly is secured by a bearing assembly mounted to the inner wall of the primary booster (1).
7. A double-layered diffusion and serration-trailing edge integrated rim-driven propeller as claimed in claim 1, further comprising an inter-multiplier coupling assembly (3) for fixedly coupling the conduits of said primary multiplier (1) and said secondary multiplier (2) and transferring the thrust generated by said primary multiplier to the conduits of said secondary multiplier.
8. The double-layer diffusion and sawtooth tail edge integrated rim drive propeller as claimed in claim 1 or 7, further comprising a rotating member (15) provided on the guide pipe of the secondary booster, wherein the other end of the rotating member (15) is connected to the hull to transmit the generated thrust to the hull.
CN202111102315.3A 2021-09-19 2021-09-19 Double-layer diffusion and sawtooth tail edge integrated rim driving propeller Pending CN113815831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111102315.3A CN113815831A (en) 2021-09-19 2021-09-19 Double-layer diffusion and sawtooth tail edge integrated rim driving propeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111102315.3A CN113815831A (en) 2021-09-19 2021-09-19 Double-layer diffusion and sawtooth tail edge integrated rim driving propeller

Publications (1)

Publication Number Publication Date
CN113815831A true CN113815831A (en) 2021-12-21

Family

ID=78922688

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111102315.3A Pending CN113815831A (en) 2021-09-19 2021-09-19 Double-layer diffusion and sawtooth tail edge integrated rim driving propeller

Country Status (1)

Country Link
CN (1) CN113815831A (en)

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Application publication date: 20211221

RJ01 Rejection of invention patent application after publication