CN212423430U

CN212423430U - Combined type contra-rotating propeller electric propulsion system

Info

Publication number: CN212423430U
Application number: CN202020979941.5U
Authority: CN
Inventors: 郑锐聪; 邱湘瑶; 肖燕燕; 郭望渠
Original assignee: Zhuhai Hantuda Technology Co ltd
Current assignee: Zhuhai Hantuda Technology Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-01-29
Anticipated expiration: 2030-06-02

Abstract

The utility model relates to a combined contra-rotating propeller electric propulsion system, which comprises a first motor, a shaft system, a first propeller and a rim type propeller. The utility model improves the propulsion efficiency, and distributes the power of the large diesel engine with high price and limited selection range to a plurality of low-power generator sets through the type of the electric propulsion system, thereby expanding the selection range and reducing the power system. Initial installation cost. The rudder and propeller integrated type is adopted, which improves the maneuverability of the ship, and is especially suitable for medium and large ships.

Description

Combined type contra-rotating propeller electric propulsion system

Technical Field

The utility model belongs to the technical field of the ship turbine impels, concretely relates to modular contra-rotating oar electric propulsion system.

Background

With the development of electric propulsion technology, electric propulsion systems are increasingly used on ships. The electric propulsion system is a propulsion type which is powered by a generator set or a battery, a propeller is driven by a motor, and the speed is regulated by a frequency converter or a controller, but the electric propulsion system has low electric propulsion efficiency and a complex structure. In a traditional propulsion mode, a high-power diesel engine is usually adopted to drive a large-diameter propeller through a shafting or a gear box, and a single diesel engine has overlarge power, large size, medium weight and high price and is limited in model selection range.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provided a modular contra-rotating oar electric propulsion system, improved propulsion efficiency, the pattern of passing through electric propulsion system with the power of the large-scale diesel engine that the price is expensive, the lectotype scope receives the restriction, the share is many low-power generating set, has enlarged the lectotype scope, has reduced driving system's initial cost, has adopted the pattern of rudderstock unification, has improved the maneuverability of boats and ships, and large-scale boats and ships in the specially adapted are used.

For solving one of above-mentioned technical problem at least, the utility model discloses the technical scheme who takes is:

a combined counter-rotating propeller electric propulsion system, comprising: the novel propeller shaft comprises a first motor, a shaft system, a first propeller and a rim type propeller, wherein two ends of the shaft system are respectively connected with the first motor and the first propeller, the rim type propeller is arranged behind the first propeller and is the same as the thrust direction of the first propeller, and the rotating direction of a second propeller of the rim type propeller is opposite to that of the first propeller.

Further, the rim pusher comprises: casing, second motor, pipe, bearing group and second screw, wherein, the second motor set up in the casing, the both ends of casing are equipped with respectively the pipe, second motor stator is fixed in both ends on the step of pipe, second motor rotor is located both ends the below of step, bearing group set up in between step and the second motor rotor, the second screw pass through the blade tip flange with the second motor rotor links to each other.

Furthermore, the device also comprises a gear box, and the gear box is respectively connected with the motor and the shafting.

Further, the rim type propeller is arranged on a mounting flange of a steering shaft of the ship steering system.

Furthermore, the steering shaft is connected with a steering engine or a full-rotation mechanism to drive the steering shaft to swing the rudder left and right or to rotate fully for 360 degrees.

Further, rim formula propeller installs in the boats and ships bottom and is located between first screw and the boats and ships rudder system, the boats and ships rudder system is connected with the rudder blade.

The beneficial effects of the utility model include at least:

1) the propulsion efficiency is improved: firstly, a horizontal electric propulsion system and a rim type propeller are adopted to form a pair of rotating propellers, and the rear propeller absorbs the circumferential energy of the front propeller, so that the propulsion efficiency is improved;

2) the electric propulsion system is adopted to reduce the single machine power of the main machine: after the electric propulsion system is adopted, two diesel generator sets with smaller power can be adopted for replacement, the power of each prime motor can be made smaller, and a larger margin is selected and arranged; meanwhile, in operation, only one generator set can be started or two or more generator sets can be started simultaneously according to the requirements of working conditions, so that the flexibility of power distribution is improved;

3) help to reduce single-oar diameter and power: the power originally output to 1 propeller is distributed to 2 propellers, so that the load of a single propeller is reduced, and the generation of cavitation bubbles is inhibited; meanwhile, the diameter of the propeller can be made smaller, and the arrangement is more flexible;

4) the specification and the type selection limit of the power element are reduced: when a set of electric propulsion system is adopted, the required electric and electronic elements have larger specifications, such as a frequency converter, a switch, a transformer, a contactor and the like, have larger overcurrent, high technical difficulty and high price; after the same power is distributed to the two sets of electric propulsion systems, the power of a single electric propulsion system is reduced, the specification of the matched power electronic element is also reduced, and if the overcurrent of a frequency converter, a contactor, a frequency converter, a switch and the like is reduced, the range of model selection is improved, the price is also greatly reduced, and the initial charging of the whole power system is favorably reduced;

5) the maneuverability is improved: when adopting rim formula propeller as providing the steering force, rudder oar unifies, and the helm power of providing is bigger, especially in the low, the poor condition of traditional rudder effect of boats and ships business turn over port speed of a ship, adopts the propeller of rudder oar unification to provide the helm power of turning, does not receive the influence of the speed of a ship, has improved helm effect and boats and ships maneuverability by a wide margin, lets boats and ships more flexible, let the navigation safer.

Drawings

Fig. 1 is a schematic structural view of a propulsion system according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of the rim type propeller of the present invention.

Fig. 3 is a cross-sectional view taken along line C-C of fig. 2.

Fig. 4 is a schematic view of the propulsion system according to the present invention.

Fig. 5 is a schematic view of the propulsion system turning right rudder according to the present invention.

Fig. 6 is a schematic structural view of a propulsion system according to a second embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a propulsion system according to a third embodiment of the present invention.

Fig. 8 is a schematic structural view of a propulsion system according to a fourth embodiment of the present invention.

The ship comprises a ship body 1, a first motor 2, a gear box 3, a shafting 4, a first propeller 5, a rim type propeller 6, a shell 601, a second motor stator 602, a second motor rotor 603, a guide pipe 604, a bearing group 605, a second propeller 606, a blade tip flange 607, a ship rudder system 7, a mounting flange 8 and a rudder blade 9.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Example 1: as shown in fig. 1, in order to improve the propulsion efficiency and reduce the power configuration of a single propeller, the present invention adopts a novel propulsion type in which two different electric propulsion types are combined. The utility model discloses a propulsion system is formed by the horizontal electric propulsion system that horizontal motor drive shafting and screw are constituteed to and the combination of rim formula electric propulsion system. The first propeller of the horizontal electric propulsion system and the second propeller of the rim type propeller rotate in opposite directions to form a twin-rotor type propeller, and the thrust directions are the same. The rim type propeller is arranged on a mounting flange of a steering shaft of a ship rudder system, the rudder system bears the weight of the propeller, and the rim type propeller is driven to swing and steer at the same time, so that the effect of combining the rudder and the propeller is achieved.

The horizontal electric propulsion system consists of a first motor, a gear box, a shafting and a first propeller in driving water, wherein the first motor, the gear box, the shafting and the first propeller are arranged in a cabin. The first motor is powered by a power supply on a ship, such as a generator set or a battery pack, the speed of the motor is controlled by a frequency converter or a controller, and the output of the first motor is decelerated by a gear to drive a shaft system and a first propeller to rotate so as to push the ship to advance.

As shown in fig. 2 and 3, rim formula propeller comprises second motor, second screw, front and back pipe, bearing group etc. the second motor is arranged in under water, for rim formula permanent magnetism brushless motor, the second screw passes through the blade tip flange to be connected with second electric motor rotor, by second electric motor rotor direct drive second screw, no longer need intermediate drive links such as gear box, shafting, the bearing group bears the weight of rotor and screw on transmitting the thrust of screw to motor and hull simultaneously. The second motor directly drives the propeller, and efficiency loss and noise vibration generated by meshing of the gear box are avoided in the middle, so that the rim type propeller has the advantages of high efficiency, low noise and the like.

The rotating direction of the first propeller of the horizontal electric propulsion system is opposite to that of the second propeller of the rim type propeller, the two propellers form a contra-rotating propeller combination, the rear propeller (the second propeller) absorbs the circumferential rotating vortex energy generated by the front propeller (the first propeller), and the propulsion efficiency is improved. Meanwhile, the power originally output to one propeller is distributed to two propellers, so that the load on the surface of the single propeller is reduced, and the generation of cavitation bubbles is favorably inhibited. And after the power of the original large-diameter propeller is distributed to 2 propellers, the diameter of each propeller can be smaller, the original large-diameter propeller is changed into the existing 2 propellers with smaller diameters, and the arrangement of space behind a ship is facilitated.

As shown in fig. 4 and 5, the rim type propeller of the present invention is mounted on the mounting flange of the rudder system, and the weight of the propeller is borne by the rudder system. The steering engine or the full-rotation mechanism can be arranged in the cabin to drive the rudder shaft to swing left and right or rotate for 360 degrees, when the rudder shaft swings or rotates fully, the rim type propeller is driven to rotate or rotate fully to send out thrust in different directions, the thrust direction is the direction shown by an arrow in the figure, the ship is pushed to turn or move, the functions of the rudder and the oar are played simultaneously, and the maneuverability of the ship is improved.

Example 2: unlike embodiment 1, as shown in fig. 6, when a low-speed motor is used, a gear box may not be needed, and the first motor directly drives the shaft system and the first propeller to rotate.

Example 3: different from the embodiment 1, as shown in fig. 7, the rim type propeller is fixed at the bottom of the ship, and does not swing the rudder, and the conventional rudder system and rudder blade structure is continuously adopted behind the rim type propeller, and the rudder shaft is driven to swing by the rudder steering mechanism, so that the rudder blade is driven to swing, and the rudder steering is realized.

Example 4: unlike embodiment 3, as shown in fig. 8, when a low-speed motor is used, a gear box may not be needed, and the first motor directly drives the shaft system and the first propeller to rotate.

To sum up, the utility model discloses formed a combination to the commentaries on classics oar, improved propulsion efficiency, passed through electric propulsion system's pattern with the power of the large-scale diesel engine that the price is expensive, the lectotype scope receives the restriction, shared for the generating set of many low powers, enlarged the lectotype scope, reduced driving system's initial cost of adorning. The combined type of the steering and the oar is adopted, the maneuverability of the ship is improved, and the combined type steering and oar is particularly suitable for medium and large ships.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that various changes, modifications, substitutions and alterations can be made in the above embodiments by those skilled in the art without departing from the scope of the present invention, and that various changes in the detailed description and applications can be made by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A combined counter-rotating propeller electric propulsion system, comprising: the novel propeller shaft comprises a first motor, a shaft system, a first propeller and a rim type propeller, wherein two ends of the shaft system are respectively connected with the first motor and the first propeller, the rim type propeller is arranged behind the first propeller and is the same as the thrust direction of the first propeller, and the rotating direction of a second propeller of the rim type propeller is opposite to that of the first propeller.

2. A combined contra-rotating-paddle electric propulsion system according to claim 1, characterized in that the rim propeller comprises: casing, second motor, pipe, bearing group and second screw, wherein, the second motor set up in the casing, the both ends of casing are equipped with respectively the pipe, second motor stator is fixed in both ends on the step of pipe, second motor rotor is located both ends the below of step, bearing group set up in between step and the second motor rotor, the second screw pass through the blade tip flange with the second motor rotor links to each other.

3. The combined contra-rotating propeller electric propulsion system of claim 2, further comprising a gearbox, the gearbox being connected to the motor and the shafting, respectively.

4. A combined contra-rotating propeller electric propulsion system according to claim 2 or 3, characterized in that the rim propeller is mounted on a mounting flange of a steering shaft of a vessel steering system.

5. The combined contra-rotating propeller electric propulsion system according to claim 4, wherein the steering shaft is connected with a steering engine or a full-rotation mechanism to drive the steering shaft to steer left and right or make a full rotation of 360 degrees.

6. A combined contra-rotating propeller electric propulsion system according to claim 2 or 3, characterised in that the rim thruster is mounted at the bottom of the vessel between the first propeller and the vessel rudder system, to which rudder blades are connected.