Composite propulsion device for shuttling and sailing in water and air

Abstract

The invention belongs to the technical field of aircraft and underwater vehicle power propulsion, and discloses a composite propulsion device for shuttling and sailing in water and air, comprising: a stator of an internally hollow annular structure, the inner side of the stator being a water flow channel; a first armature winding and a second armature winding, wherein the first armature winding and the second armature winding are circumferentially distributed in the stator; the inner rotor is arranged on the outer side of the stator; the first permanent magnet is arranged on the inner side of the inner rotor through a bearing; the seven-blade large skew propeller is arranged on the inner side of the inner rotor; the outer rotor is arranged on the outer side of the stator; the second permanent magnet is arranged on the inner side of the outer rotor through a bearing; and the number of the folding paddles is two, and the two folding paddles are symmetrically arranged on the outer rotor. The problem that an existing propelling system cannot meet the requirement for air navigation or underwater navigation at the same time is solved, and the requirement for simultaneous air navigation and underwater navigation of the aircraft is met.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft and submarine propulsion, and in particular to a composite propulsion device for water and air shuttle navigation. Background Art

[0002] If an aircraft can shuttle between the air and underwater, and has a certain degree of maneuverability both underwater and in the air, it will inevitably expand human transportation methods and meet diverse transportation and transport needs.

[0003] In order to realize the ability of the aircraft to shuttle in the air and underwater, the corresponding power propulsion system must have the ability to work continuously and stably in two different media (air and water) at the same time, and meet the power requirements of medium switching and different speeds. However, the current aviation, aerospace, and marine propulsion systems cannot meet the above requirements because the working principles and working methods of the propulsion systems in different media environments are completely different. The turboprop engines, turbojet engines, turbofan engines, etc. used in aircraft cannot work in water; the underwater propellers, pump-jet propulsion, water jet propulsion, etc. used in submarines and torpedoes cannot work in the air; although the solid / liquid rocket engines used in some missiles and torpedo weapons are not restricted by air and water media, they have short working time and small specific impulse, which makes it difficult to meet the endurance requirements of the aircraft. Therefore, it is necessary to explore propulsion systems suitable for multi-media environments.

[0004] At present, the foreseeable solution is a combined air / underwater propulsion system. The simple combination is to install two power units on the aircraft at the same time, one for air navigation and one for underwater diving, but this simple combination has problems such as poor system integration, non-compact structure, single function, and large mass. This combination pays too much load cost and has low availability. Therefore, it is urgent to develop a combined propulsion system that can be used for both air and underwater navigation. Summary of the invention

[0005] The present invention is intended to provide a composite propulsion device for water and air shuttle navigation, so as to solve the problem that the existing propulsion system cannot meet the requirements of air or underwater navigation at the same time.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a composite propulsion device for water and air shuttle navigation, comprising:

[0007] The stator is a hollow ring structure, and the inner side of the stator is a water flow channel;

[0008] A first armature winding and a second armature winding, wherein the first armature winding and the second armature winding are circumferentially distributed in the stator;

[0009] An inner rotor, the inner rotor being arranged outside the stator;

[0010] A first permanent magnet, which is arranged on the inner side of the inner rotor through a bearing, and corresponds to the first armature winding;

[0011] A seven-blade large-skew propeller, wherein the seven-blade large-skew propeller is arranged on the inner side of the inner rotor;

[0012] An outer rotor, the outer rotor being arranged outside the stator;

[0013] A second permanent magnet, wherein the second permanent magnet is disposed on the inner side of the outer rotor through a bearing, and the second permanent magnet corresponds to the second armature winding;

[0014] The folding paddles are two in number and are symmetrically arranged on the outer rotor.

[0015] Furthermore, a rotating shaft is passed through the end of the folding paddle, a connecting block is rotatably connected to the rotating shaft, and a torsion spring is connected between the two connecting blocks and the outer rotor.

[0016] Furthermore, there is a gap between the first armature winding and the second armature winding and the stator respectively.

[0017] Furthermore, the first permanent magnet and the second permanent magnet are both made of neodymium iron boron material.

[0018] Furthermore, the first permanent magnet and the second permanent magnet are respectively in the shape of tiles, and are respectively embedded on the side walls of the inner rotor and the outer rotor.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The composite propulsion device of this scheme has both air folding propellers and underwater special propellers. As the vehicle changes in different working scenes in water and air, it can switch to the corresponding power output state. When working in the air, the two folding propellers are opened to generate propulsion; when entering underwater, the two folding propellers stop driving, and the seven-blade large side-slant propeller starts to rotate and generate underwater propulsion.

[0021] 2. The outer rotor and inner rotor of the composite propulsion device of this scheme share the same stator. The stator adopts a watertight and heat dissipation design, and the armature winding is encapsulated in the stator cavity, avoiding the problem of conventional outer rotor motor enameled wire being corroded by seawater, aging and damage, and greatly improving the reliability and durability of the entire composite propulsion device in the water environment.

[0022] 3. This scheme has a compact structure, which facilitates the arrangement of the entire composite propulsion device on the aircraft, and enables the aircraft design to have a very simple appearance layout.

[0023] 4. This solution adopts a modular design and can be used as a complete power solution for aircraft. Each component can be replaced, reducing subsequent maintenance costs, while also effectively reducing the difficulty and cost of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front axonometric view of the composite propulsion device in underwater working state;

[0025] Figure 2 This is a rear axonometric view of the composite propulsion device in underwater working condition;

[0026] Figure 3 is a cross-sectional view of the stator in the embodiment;

[0027] Figure 4 is a cross-sectional view of the stator and armature winding in the embodiment;

[0028] Figure 5 It is a front view of the stator and the armature winding in the embodiment;

[0029] Figure 6 This is the main view of the composite propulsion device in the air working state;

[0030] Figure 7 This is a front axonometric view of the composite propulsion device in the air working state;

[0031] Figure 8 It is a half-section view of the composite propulsion device in the working state in the air;

[0032] Fig. 9 This is the rear view of the composite propulsion device working in the air.

[0033] The names of the corresponding marks in the accompanying drawings are: folding propeller 1, outer rotor 2, stator 3, inner rotor 4, first armature winding 5, second armature winding 6, second permanent magnet 7, first permanent magnet 8, seven-blade large-skew propeller 9, and connecting block 10. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0035] like Figures 1 to 9As shown, a composite propulsion device for water and air shuttle navigation includes a stator 3 with a hollow interior and an annular structure, and the inner side of the stator 3 is a water flow channel. The inside of the stator 3 is provided with a first armature winding 5 and a second armature winding 6 distributed in the circumferential direction, and a gap is left between the first armature winding 5 and the second armature winding 6 and the stator 3. The inner side of the stator 3 is rotatably connected to the inner side of the stator 3 through a bearing, and a seven-blade large side-slant propeller 9 is installed on the inner side of the inner rotor 4. A plurality of first permanent magnets 8 are embedded on the outer surface of the inner rotor 4. The plurality of first permanent magnets 8 are all tile-shaped and circumferentially equidistantly arrayed on the outer wall of the inner rotor 4, and the first permanent magnets 8 are arranged opposite to the first armature winding 5. The outer side of the stator 3 is rotatably connected to the outer rotor 2 through a bearing, and a plurality of second permanent magnets 7 are embedded on the inner side of the outer rotor 2. The plurality of second permanent magnets 7 are all tile-shaped and circumferentially equidistantly arrayed on the inner wall of the outer rotor 2, and the second permanent magnets 7 are arranged opposite to the second armature winding 6. In this embodiment, under the action of the first armature winding 5 and the second armature winding 6, the inner rotor 4 and the outer rotor 2 can rotate independently around the central axis of the stator 3. The first permanent magnet 8 and the second permanent magnet 7 are both made of neodymium iron boron material. The number of permanent magnets is determined by the overall underwater design of the composite propulsion device. In order to enhance the structural strength of the permanent magnet, a non-magnetic guard ring is installed on the permanent magnet array when necessary. The first armature winding 5 and the second armature winding 6 are arranged in the cavity of the stator 3, and the armature winding is encapsulated in the cavity of the stator 3, which can avoid the influence of seawater corrosion, salt spray aging, seawater pollution and other factors on the armature winding.

[0036] To protect the armature winding from the influence of the external water environment, the stator 3 seals the armature winding in the cavity. For the convenience of introduction, the stator 3 and the coil of the armature winding are hidden, and the internal structure of the stator 3 is highlighted. The radial magnetic flux emitted by the N pole of the first permanent magnet 8 passes through the air gap between the inner rotor 4 and the stator 3, passes through the armature coil of the armature winding inside the stator 3 and enters the yoke, then passes through the armature coil and the air gap, and returns to the S pole of the permanent magnet of the inner rotor 4, forming a closed loop. The radial magnetic flux emitted by the N pole of the second permanent magnet 7 passes through the air gap between the outer rotor 2 and the stator 3, passes through the armature coil of the armature winding inside the stator 3 and enters the yoke, then passes through the armature coil and the air gap, and returns to the S pole of the second permanent magnet 7, forming a closed loop. It can be seen that the first armature winding 5 and the first armature winding 5 respectively play the role of driving the inner rotor 4 and the outer rotor 2. In order to reduce the interference between the first armature winding 5 and the second armature winding 6, reduce electromagnetic losses, and realize independent control of the outer rotor 2 and the inner rotor 4, the two armature windings are arranged relatively independently, and a certain gap is left in the axial direction of the armature winding. At the same time, the silicon steel sheets of the armature winding are partially hollowed out and distributed symmetrically in the circumferential direction, and the silicon steel sheets of the two windings are staggered.

[0037] The composite propulsion device of this embodiment is powered and controlled by a dedicated electric regulator to ensure that the outer rotor 2 and the inner rotor 4 operate separately.

[0038] Two folding propellers 1 are symmetrically arranged at the tail of the outer rotor 2. A rotating shaft is passed through the ends of the two folding propellers 1. Each rotating shaft is rotatably connected to a connecting block 10. Both connecting blocks 10 are connected to the stator 3. A torsion spring is connected between the rotating shaft and the connecting block 10. When the aircraft is running underwater, the two folding propellers 1 stop rotating. At this time, under the action of the torsion spring, the two folding propellers 1 are close to each other and are in a state of being parallel to each other. The two folding propellers 1 extend downstream, which is beneficial to reducing the underwater resistance generated by the folding propellers 1. When the aircraft is running in the air, the two folding propellers 1 rotate at high speed under the drive of the outer rotor 2. The two folding propellers 1 are opened under the constraint of the torsion spring to overcome the elastic force and generate axial propulsion. In order to match the aircraft's aerial flight technical indicators, the parameters of the two folding propellers 1 should be optimized to achieve a higher propulsion efficiency.

[0039] The working process of this embodiment is as follows:

[0040] The composite propulsion device has two working modes: Aerial working mode: the stator 3 and the outer rotor 2 work and drive the two folding propellers 1, so that the aircraft obtains propulsion in the air. Underwater working mode: the stator 3 and the inner rotor 4 work to drive the seven-blade large side-slant propeller 9, so that the aircraft obtains propulsion underwater. The composite propulsion device can be switched between the aerial working mode and the underwater working mode by controlling the power-on state of the two sets of armature coils inside the stator 3 according to the working conditions. When the dedicated electric control controls the armature winding corresponding to the outer rotor 2 to be energized, the outer rotor 2 starts to drive the folding propeller 1 to work, which is the aerial working mode. When the dedicated electric control controls the armature winding corresponding to the inner rotor 4 to be energized, the inner rotor 4 starts to drive the inner seven-blade large side-slant propeller 9 to work, which is the underwater working mode.

[0041] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A composite propulsion device for water and air shuttle navigation, characterized in that: include: A stator (3), wherein the stator (3) is an annular structure with a hollow interior, and the inner side of the stator (3) is a water flow channel; A first armature winding (5) and a second armature winding (6), wherein the first armature winding (5) and the second armature winding (6) are circumferentially distributed in the stator (3); An inner rotor (4), wherein the inner rotor (4) is arranged outside the stator (3); a first permanent magnet (8), the first permanent magnet (8) being arranged on the inner side of the inner rotor (4) via a bearing, the first permanent magnet (8) corresponding to the first armature winding (5); A seven-blade large-skew propeller (9), wherein the seven-blade large-skew propeller (9) is arranged on the inner side of the inner rotor (4); An outer rotor (2), the outer rotor (2) being arranged outside the stator (3); a second permanent magnet (7), the second permanent magnet (7) being arranged on the inner side of the outer rotor (2) via a bearing, the second permanent magnet (7) corresponding to the second armature winding (6); Folding paddles (1), the number of the folding paddles (1) is two, and the two folding paddles (1) are symmetrically arranged on the outer rotor (2).

2. A composite propulsion device for water and air shuttle navigation according to claim 1, characterized in that: A rotating shaft is passed through the end of the folding paddle (1), a connecting block (10) is rotatably connected to the rotating shaft, and a torsion spring is connected between the two connecting blocks (10) and the outer rotor (2).

3. A composite propulsion device for water and air shuttle navigation according to claim 1, characterized in that: A gap is left between the first armature winding (5) and the second armature winding (6) and the stator (3).

4. A composite propulsion device for water and air shuttle navigation according to claim 1, characterized in that: The first permanent magnet (8) and the second permanent magnet (7) are both made of neodymium iron boron material.

5. A composite propulsion device for water and air shuttle navigation according to claim 4, characterized in that: The first permanent magnet (8) and the second permanent magnet (7) are respectively in the shape of tiles, and are respectively embedded on the side walls of the inner rotor (4) and the outer rotor (2).

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