Wide speed range propulsion device

Abstract

The present application relates to the related technical field of propulsion device, especially to a wide speed range propulsion device, comprising a fairing and a core shaft, the fairing is arranged around the core shaft to form a flow channel for medium conveying; a rotor assembly arranged in the flow channel is used to generate propulsion power; a stator assembly arranged in the flow channel comprises adjustable blades and an adjusting mechanism used to adjust the working parameters of the blades, the adjusting mechanism can independently or cooperatively adjust the attack angle parameters of the blades and / or the spacing parameters between the blades and the rotor assembly; a driving device is used to provide power for the adjusting mechanism; wherein, by adjusting the attack angle parameters and / or spacing parameters of the blades, the propulsion efficiency of the propulsion device under different speed working conditions is improved. The wide speed range propulsion device provided by the present application can work at a high propulsion efficiency under different speed working conditions, and at the same time, the endurance of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of propulsion devices, in particular to a wide-speed-range propulsion device. BACKGROUND

[0002] Pump-jet propeller has the characteristics of high efficiency and low noise, and is mainly used in the military field. At present, except China and India, the United States, the United Kingdom, France and Russia have used it for nuclear submarine propulsion. The United States proposed in 1944 to reduce the speed through the blade by pump-jet to improve the performance of the propeller. The United Kingdom first installed pump-jet structure on the "Trafalgar" class nuclear submarine in the 1980s. Pump-jet propeller includes rotor structure, guide pipe structure and stator structure.

[0003] However, the existing pump-jet design still mostly designs the propeller blade as the main improvement and power enhancement direction, and the research on the stator rear and front is still in the research stage. The existing design still faces the problem of small high-efficiency propeller speed range, which cannot adapt to the working requirements of the vehicle under various working conditions. In order to smoothly propel under various working conditions, certain concessions have been made in energy saving. At the same time, under more severe working conditions, the existing propeller design still faces the problems of stall and empty car, and the safety of the crew on board is difficult to guarantee.

[0004] Therefore, there is an urgent need for a propulsion device that can realize wide-speed-range high-efficiency propulsion. SUMMARY

[0005] The purpose of the present application is to provide a wide-speed-range propulsion device, which can solve the problem of small high-efficiency propeller speed range of the existing propulsion device in the background art, and cannot adapt to the working requirements of the vehicle under various working conditions.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a wide-speed-range propulsion device, comprising a fairing and a core shaft, the fairing is arranged around the core shaft to form a flow channel for medium conveying;

[0007] A rotor assembly is arranged in the flow channel for generating propelling power;

[0008] A stator assembly is arranged in the flow channel, comprising adjustable blades and an adjusting mechanism for adjusting the working parameters of the blades, the adjusting mechanism can independently or cooperatively adjust the attack angle parameters of the blades and / or the spacing parameters between the blades and the rotor assembly;

[0009] A driving device is used to provide power for the adjusting mechanism;

[0010] Wherein, by adjusting the attack angle parameter and / or spacing parameter of the blade, the propelling efficiency of the propelling device under different speed working conditions is improved.

[0011] Optionally, the adjusting mechanism comprises:

[0012] A base sleeve is sleeved on the mandrel in a slidable manner, and the surface of the base sleeve is provided with a groove track and a positioning port;

[0013] A rotating disc is matched with the groove track through a cylindrical connecting shaft;

[0014] A positioning slider is arranged in the rotating disc in a retractable manner;

[0015] A power device is used for controlling the retracting and extending actions of the positioning slider;

[0016] When the positioning slider extends, the spacing adjustment is realized by matching with the positioning port, and when the positioning slider is retracted, the attack angle adjustment is realized by the movement of the cylindrical connecting shaft in the groove track.

[0017] Optionally, the driving device is one of a hydraulic cylinder, an electric push rod or a linear motor, and is arranged on one side of the stator assembly and used for pushing the base sleeve to move along the mandrel.

[0018] Optionally, the meridian plane of the fairing is a wing-shaped structure, including a symmetrical wing-shaped structure or an asymmetrical wing-shaped structure.

[0019] Optionally, the rotor assembly comprises variable cross-section wing-shaped blades with a number not less than 3.

[0020] Optionally, the stator assembly comprises 3-9 adjustable angle blades, and the angle adjustment range is ±45°.

[0021] Optionally, the mandrel is a hollow structure, and the inside of the mandrel is provided with a control circuit and a power transmission device.

[0022] Optionally, a sensor module is further included, which is used for monitoring the flow speed, pressure and blade angle parameters in the flow channel in real time.

[0023] Optionally, a control system is further included, which is used for automatically adjusting the working parameters of the blades according to the feedback signals of the sensor module.

[0024] Optionally, the propelling device is suitable for the propelling system of a submarine, an underwater vehicle or a ship.

[0025] Compared with the prior art, the propelling device provided by the application can work at a high propelling efficiency under different speed working conditions by adjusting the stator blade angle and spacing, and the endurance of the vehicle is improved, so that the problem that the existing propelling device has a small high-efficiency propelling speed range and cannot adapt to the working requirements of the vehicle under various working conditions is solved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a wide speed range propulsion device of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure of a wide speed range propulsion device of the present application. Figure 1

[0028] Figure 3 It is a schematic diagram of the overall structure of a wide speed range propulsion device of the present application. Figure 1

[0029] Figure 4 It is a schematic diagram of the overall structure of a wide speed range propulsion device of the present application. Figure 1

[0030] Figure 5 It is a schematic diagram of the overall structure of a wide speed range propulsion device of the present application. Figure 1 DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] The inventor of the present application found that the optimal propulsive efficiency speed is related to the stator blade angle and the distance between the stator blade and the rotor blade after studying the problem that the seakeeping speed under the highest propulsive efficiency of the existing pump-jet propeller is relatively limited. Therefore, the optimal propulsive efficiency under different seakeeping speeds can be obtained by adjusting the different angles of the stator blade and adjusting the distance between the stator blade and the rotor blade, thereby expanding the optimal speed range of the optimal propulsive efficiency, and achieving the purpose of wide speed range high-efficiency propulsion.

[0033] Please refer to Figures 1-5 ​​​​The application provides a wide-speed-range propelling device, which comprises a fairing 1 and a core shaft 2. The fairing 1 is arranged around the core shaft 2 to form a flow channel for medium conveying. A rotor assembly 3 is arranged in the flow channel. The rotor assembly 3 is used for generating propelling power. A stator assembly 4 is arranged in the flow channel and located at one end of the rotor assembly 3. The stator assembly 4 comprises adjustable blades 42 and an adjusting mechanism 41. The adjusting mechanism 41 is used for adjusting the working parameters of the blades 42. The adjusting mechanism 41 can independently or cooperatively adjust the angle-of-attack parameters and / or the spacing parameters of the blades 42. A driving device 5 is used for providing power for the adjusting mechanism 41. Through adjusting the angle-of-attack parameters and / or the spacing parameters of the blades 42, the propelling efficiency of the propelling device under different cruising speed conditions can be improved, so that the wide-speed-range propelling device provided by the application can achieve optimal propelling efficiency under different cruising speeds, thereby expanding the optimal cruising speed range of the optimal propelling efficiency and achieving the purpose of wide-speed-range high-efficiency propelling.

[0034] Specifically, the adjusting mechanism 41 comprises a base sleeve 411, a rotating disc 412, a positioning sliding block 413 and a power device 414. The base sleeve 411 is slidably sleeved on the core shaft 2. The surface of the base sleeve 411 is provided with a groove track 4111 and a positioning port 4112. The rotating disc 412 is matched with the groove track 4111 through a cylindrical connecting shaft 4121. The positioning sliding block 413 is telescopically arranged in the rotating disc 412. The power device 414 is used for controlling the telescopic action of the positioning sliding block 413. When the positioning sliding block 413 is extended, the positioning sliding block 413 is matched with the positioning port 4112 to realize spacing adjustment, and when the positioning sliding block 413 is retracted, the cylindrical connecting shaft 4121 is moved in the groove track 4111 to realize angle-of-attack adjustment. The structure design has the advantages of simple structure, less mechanical device interaction, and convenient maintenance and management.

[0035] In one specific embodiment, the driving device 5 is any one of a hydraulic cylinder, an electric push rod or a linear motor. Alternatively, the driving device 5 is arranged on one side of the stator assembly 4. The driving device 5 is used for pushing the base sleeve 411 to move along the core shaft 2. It can be understood that the driving device 5 can also be other structures related, for example, the driving device 5 is in transmission connection with the base sleeve 411 through a transmission member to drive the base sleeve 411 to move along the core shaft 2.

[0036] Alternatively, as Figure 1As shown, the propulsion device of the present invention includes a flow guide 1, a spindle 2, a rotor assembly 3, a stator assembly 4, and a drive device 5. The flow guide 1 is cylindrical with an airfoil structure on its meridional plane. Optionally, the airfoil structure of the flow guide 1 may include a symmetrical airfoil or an asymmetrical airfoil. A flow channel is formed between the spindle 2 and the flow guide 1. The rotor assembly 3 is mounted on the spindle 2 and draws water into the flow channel by rotation. Optionally, the rotor assembly 3 includes at least three variable cross-section airfoil blades. The stator assembly 4 is mounted on the spindle 2 and is used to control the water intake and provide a balancing torque. Optionally, the stator assembly 4 includes 3-9 adjustable-angle blades 42. Its angle adjustment range is ±45°. The rotation mechanism 41 of the stator assembly 4 includes a base sleeve 411, a rotating disk 412, a positioning slider 413, and a power device 414. The base sleeve 411 moves along the spindle 2, and the rotating disk 412 is fixed to the grooved track 4111 via the cylindrical connecting shaft 4121. The positioning slider 413 is controlled to extend and retract by the power device 414 to realize the rotation or distance adjustment of the stator blades 42.

[0037] like Figure 3 As shown, when the angle of the stator blade 42 needs to be adjusted, the positioning slider 413 retracts, and the drive device 5 pushes the base sleeve 411 to move back and forth. Since the cylindrical connecting shaft 4121 of the rotating disk 412 moves along the grooved track 4111, the stator blade 42 remains in its original position, but the rotating disk 412 drives the blade 42 to rotate, thus achieving angle of attack adjustment. This mode is suitable for scenarios where propulsion efficiency needs to be optimized at different speeds.

[0038] like Figure 4 As shown, when it is necessary to adjust the distance between the stator blades 42 and the rotor assembly 3, the positioning slider 413 falls and is fixed to the positioning port 4112. The drive device 5 pushes the base sleeve 411 to move back and forth. Since the rotating disk 412 cannot rotate, the stator blades 42 move back and forth with the base sleeve 411, thereby achieving the distance adjustment. This mode is suitable for severe operating conditions that require avoiding stalling or idling.

[0039] By combining adjustments to the stator blade angle and spacing, the propulsion system can maintain high-efficiency propulsion at different speeds. For example, at low speeds, the stator blade angle of attack is increased and the spacing is decreased; at high speeds, the angle of attack is decreased and the spacing is increased.

[0040] In an optional embodiment, the mandrel 2 is a hollow structure, and the interior of the mandrel 2 is provided with a control circuit and a power transmission device (not shown in the figure). This design can make the structure more compact and optimize the use of space. On the one hand, it can save installation space: by embedding the control circuit and the power transmission device, it avoids external pipeline winding, makes the overall structure of the propulsion device more compact, and is especially suitable for submarines or underwater vehicles with limited space; on the other hand, it can improve the cleanliness of the flow channel: there is no additional pipeline outside, which ensures that the fluid flow in the flow channel is not disturbed, reduces the hydraulic loss (the measured turbulent noise can be reduced by 5%-8%), and improves the protection performance. The hollow mandrel serves as a sealed cavity, which can effectively protect the internal circuit and pipeline from external water pressure (up to 10 MPa or more), corrosion or collision, and the reliability is improved by more than 50%.

[0041] In another optional embodiment, a control system (not shown in the figure) and a sensor module (not shown in the figure) are further included. The sensor module is used to monitor the flow rate, pressure and blade angle parameters in the flow channel in real time. The control system is used to automatically adjust the working parameters of the blades 42 according to the feedback signals of the sensor module. By monitoring the working conditions in real time through the sensor module, the control system can automatically select the optimal parameters.

[0042] The wide-speed-range propulsion device provided by the present application is suitable for the propulsion system of a submarine, an underwater vehicle or a ship, and can work at a high propulsion efficiency under different sailing speed conditions by adjusting the stator blade angle and the spacing, and can improve the sailing endurance of the vehicle, thereby solving the problem that the existing propulsion device has a small high-efficiency propulsion speed range and cannot meet the working requirements of the vehicle to work at a high efficiency under various working conditions.

[0043] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A wide speed range propulsion device, characterized by, The application relates to a propeller device for ship propulsion system, comprising: a fairing and a mandrel, the fairing is arranged around the mandrel to form a flow channel for medium delivery; a rotor assembly arranged in the flow channel for generating propelling power; a stator assembly arranged in the flow channel, comprising adjustable blades and adjusting mechanisms for adjusting working parameters of the blades, the adjusting mechanisms can independently or cooperatively adjust the angle of attack parameters and / or the spacing parameters of the blades and the rotor assembly; a driving device for providing power for the adjusting mechanisms; wherein the propelling efficiency of the propelling device under different working conditions of ship speed is improved by adjusting the angle of attack parameters and / or the spacing parameters of the blades; the adjusting mechanisms comprise: a base sleeve slidably sleeved on the mandrel, the surface of the base sleeve is provided with a groove track and a positioning port; a rotating disc matched with the groove track through a cylindrical connecting shaft; a positioning slider telescopically arranged in the rotating disc; a power device for controlling the telescopic action of the positioning slider; wherein the positioning slider is matched with the positioning port to realize spacing adjustment when the positioning slider is extended, and the positioning slider realizes angle of attack adjustment through the movement of the cylindrical connecting shaft in the groove track when the positioning slider is retracted.

2. The wide speed range propulsion device of claim 1, wherein The driving device is one of a hydraulic cylinder, an electric push rod or a linear motor, and is arranged on one side of the stator assembly to push the base sleeve to move along the mandrel.

3. The wide speed range propulsive device of claim 1, wherein, The meridian plane of the fairing is a wing type structure, comprising a symmetrical wing type or an asymmetrical wing type.

4. The wide speed range propulsive device of claim 1, wherein, The rotor assembly comprises variable cross-section wing type blades with a number not less than 3.

5. The wide speed range propulsive device of claim 1, wherein, The stator assembly comprises 3-9 angle-adjustable blades, and the angle adjusting range is + / -45 degrees.

6. The wide speed range propulsive device of claim 1, wherein, The mandrel is a hollow structure, and the inside is provided with a control circuit and a power transmission device.

7. The wide speed range propulsive device of claim 1, wherein, The application further comprises a sensor module for real-time monitoring of flow velocity, pressure and blade angle parameters in the flow channel.

8. The wide speed range propulsion device of claim 7, wherein, The application further comprises a control system for automatically adjusting the working parameters of the blades according to the feedback signals of the sensor module.

9. The wide speed range propulsion device of any one of claims 1-8, wherein, The propelling device is suitable for the propelling system of a ship.

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