Ship icebreaking device based on switched reluctance motor and application

Abstract

The invention discloses a ship icebreaking device based on a switched reluctance motor and application. The ship icebreaking device comprises a plurality of icebreaking assemblies which are connected in series side by side. Each ice breaking assembly comprises a switched reluctance motor, a power output shaft, a piston connecting rod mechanism, a labor-consuming lever and a chain blade; the switch reluctance motor is connected with the piston connecting rod mechanism through the power output shaft, the output end of the piston connecting rod mechanism is connected with one end of the labor-consuming lever, and the chain blade is installed at the other end of the labor-consuming lever. The switch reluctance motor is adopted as a power source, the switch reluctance motor is large in starting torque and good in speed regulation performance, powerful and flexibly-adjustable power can be provided for icebreaking operation, and compared with a traditional power device, the icebreaking efficiency is greatly improved, and ice layers of different thicknesses and hardness can be rapidly and effectively broken; the multiple icebreaking assemblies are connected in series side by side and matched with the labor-consuming levers and the chain blades, the icebreaking area and cutting force are increased, and the icebreaking process is more efficient and stable.

Description

Technical Field

[0001] The present invention relates to the technical field of ship equipment, and in particular to a ship icebreaking device based on a switched reluctance motor and its application. Background Art

[0002] In the global shipping sector, the demand for ships to sail in polar and cold waters is increasing. However, the ice in these areas poses a serious obstacle to ship navigation. Traditional ship icebreaking devices and methods have many limitations:

[0003] Power and efficiency: Most traditional icebreakers use conventional propulsion systems, such as diesel engines, which have limited power output. This results in low icebreaking efficiency when faced with thick and hard ice, making it difficult to quickly open a channel, significantly increasing sailing time and impacting transport timeliness. Furthermore, traditional propulsion systems have difficulty starting in low temperatures and experience unstable power output, further reducing the reliability of icebreaking operations.

[0004] Energy utilization: Traditional icebreakers have low energy efficiency and high energy consumption. Incomplete combustion of traditional fuels like diesel not only wastes energy but also produces large amounts of pollutants, damaging the fragile polar ecosystem. Furthermore, traditional propulsion systems lack energy recovery and recycling mechanisms, making it impossible to effectively utilize excess energy during ship operation.

[0005] Maneuverability: Due to limitations in their hull structure and powertrain layout, large, conventional icebreakers have limited steering and maneuverability. This makes precise maneuvering difficult in narrow ice areas or complex ice conditions, making them prone to getting stuck in the ice and even potentially damaging the hull due to improper operation. Furthermore, traditional steering and powertrain control methods are slow to respond and cannot adapt quickly to changing ice conditions.

[0006] Motor Application: Traditional motors used in ship propulsion systems, such as asynchronous motors, suffer from low starting torque and poor speed regulation, making them incapable of meeting the frequent and drastic power adjustments required during icebreaking operations. Furthermore, these motors are less capable of operating under phase loss conditions. A failure can easily paralyze the entire power system, severely impacting the continuity of icebreaking operations.

[0007] In summary, the existing ship icebreaking technology can no longer meet the current shipping industry's growing demand for efficient, environmentally friendly and safe navigation in polar and cold waters. There is an urgent need for a new ship icebreaking device and method with high efficiency, energy saving, flexible control and high reliability. Summary of the Invention

[0008] The object of the present invention is to provide a ship icebreaking device based on a switched reluctance motor and its application, so as to solve the problems raised in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: A ship ice-breaking device based on a switched reluctance motor, comprising a plurality of ice-breaking components connected in series side by side;

[0010] Each of the ice-breaking components includes a switched reluctance motor, a power output shaft, a piston connecting rod mechanism, a laborious lever, and a chain blade;

[0011] The switched reluctance motor is connected to the piston connecting rod mechanism through the power output shaft. The output end of the piston connecting rod mechanism is connected to one end of the laborious lever. The chain blade is installed at the end of the laborious lever through a detachable structure;

[0012] A fulcrum is provided at the bow of the ship. The laborious lever is installed at the fulcrum through a bearing and can make high-speed reciprocating linear motion up and down around the fulcrum.

[0013] Preferably, it further includes a supercritical carbon dioxide power generation mechanism. The supercritical carbon dioxide power generation mechanism includes a switched reluctance speed regulating motor unit, a carbon dioxide gas circuit, an electromagnetic heating box, and an exhaust pipe. The switched reluctance speed regulating motor unit adopts a 12 / 8 structure with four units, and the single-machine power is 20 megawatts. The carbon dioxide gas circuit is used to transport carbon dioxide gas above the critical point. The electromagnetic heating box is used to heat the carbon dioxide gas to a higher supercritical state. The exhaust pipe is arranged at the lower dead center position of the piston operation. The carbon dioxide gas circuit includes an intake valve core and a one-way high-pressure valve. The intake valve core is used to fill carbon dioxide gas. The one-way high-pressure valve is pushed open when the pressure and temperature exceed the critical value, so that the carbon dioxide gas enters the electromagnetic heating box.

[0014] Preferably, it further includes an inclined pipe motor pump assembly. The inclined pipe motor pump assembly is installed at the bottom of the ship. The inclined pipe motor pump assembly includes an inclined pipe, a switched reluctance speed regulating motor stator winding, a rotor, a bracket, a propeller, bearings, and bearing brackets. The angle of the inclined pipe is 7-9°. The rotor is a hollow pipe. The propeller is embedded in the inner wall of the hollow pipe. The hollow pipe rotates at a super high speed, and bearings and bearing brackets are provided at both ends thereof, adopting magnetic suspension bearings. The switched reluctance speed regulating motor stator winding, rotor, and bracket constitute a motor control system for controlling the rotation of the rotor and the opening and closing of the valve.

[0015] Preferably, a filter screen cover and a wiper are provided in front of the water inlet of the inclined pipe to prevent large fish from being stuck in the propeller.

[0016] Preferably, it further includes a "well"-shaped navigation / turning structure. The "well"-shaped navigation / turning structure is composed of four identical components, and the four identical components are installed at the bottom of the ship.

[0017] Preferably, each component includes multiple inclined water inlet pipes, the inclination angle of the water inlet pipes is 7-9°, and disc valves are provided at both ends of the water inlet pipes. The disc valves are driven by a motor and the opening and closing control is achieved by rotating the bearings; a motor and a propeller are provided in the water inlet pipe, and the motor is used to drive the propeller to rotate and push water in and out of the water inlet pipe.

[0018] Preferably, the piston-connecting rod mechanism includes a piston and a connecting rod. The piston performs reciprocating linear motion in the cylinder and is connected to the power output shaft through the connecting rod to convert the linear motion into rotation of the power output shaft.

[0019] Preferably, the switched reluctance motor has a double-pole structure, and a pair of radially opposite electromagnetic windings constitutes "one phase".

[0020] Preferably, a method for using a ship icebreaking device based on a switched reluctance motor comprises the following steps:

[0021] A. Use a supercritical carbon dioxide power generation mechanism to generate electricity. In this mechanism, carbon dioxide gas above its critical point is fed into a carbon dioxide gas circuit. It is compressed by a switched reluctance motor, and when the pressure and temperature increase, a one-way high-pressure valve is pushed open. The carbon dioxide gas is heated by an electromagnetic heating box to a supercritical state, and the supercritical high-energy fluid power is obtained to push the piston to generate electricity.

[0022] B. Each phase of the first switched reluctance motor is first connected in parallel to the grid power supply to obtain electrical energy. After the other switched reluctance motors obtain the high-energy supercritical carbon dioxide fluid power and output electrical energy, they are replaced with the first switched reluctance motor in a phase-by-phase power supply. Each phase of the switched reluctance motor operates independently and has the ability to operate in the event of a phase loss fault.

[0023] C. Using the above electric energy to drive the switched reluctance speed regulating motor, thereby driving the piston connecting rod mechanism of multiple ice-breaking components connected in parallel in series in the ice-breaking device to reciprocate up and down;

[0024] D. The piston-connecting rod mechanism drives the lever to perform high-speed cutting movements up and down around the fulcrum, cutting and breaking the ice layer through the chain blade;

[0025] E. By controlling the opening and closing of the disc valves at both ends of the inclined pipe in the inclined pipe motor water pump assembly on the ship, and the motor driving the propeller to rotate, water flows in and out of the pipe to generate thrust, assisting the ship's navigation and steering.

[0026] Preferably, the ship icebreaking device is used in ship navigation scenarios in polar or cold waters.

[0027] Beneficial effects:

[0028] (1) The present invention uses a switched reluctance motor as the power source, which has a large starting torque and good speed regulation performance, and can provide strong and flexibly adjustable power for icebreaking operations. Compared with traditional power devices, the icebreaking efficiency is greatly improved, and ice layers with different thicknesses and hardnesses can be quickly and effectively broken; multiple icebreaking components are arranged in parallel and in series, and in cooperation with a laborious lever and a chain blade, the icebreaking area and cutting force are increased, making the icebreaking process more efficient and stable.

[0029] (2) In the present invention, the electric energy generated by the supercritical carbon dioxide power generation system is used to drive the switched reluctance speed regulation motor, and then drive the propulsion system of the icebreaker. For example, the rotational power of the motor can be transmitted to the propeller through a gearbox or a transmission device, providing a powerful propulsion force for the icebreaker to sail on the ice surface and perform icebreaking operations. Since the supercritical carbon dioxide power generation system can provide stable and efficient power output, compared with the traditional power system, the icebreaker can have stronger power and faster response when sailing in the ice area, improving the mobility and icebreaking efficiency of the icebreaker.

[0030] (3) The inclined pipeline motor pump assembly provided in the present invention can realize various navigation control actions such as the forward, backward, and flexible turning of the ship by adjusting the working states of the inclined pipeline motor pump assemblies at different positions, and can sail and operate more conveniently in the complex environment of the ice area.

[0031] (4) The "well"-shaped navigation / turning structure provided in the present invention can realize the flexible turning of the ship by reasonably controlling the opening and closing states of the different valves of the four components, and is particularly suitable for operations such as the turning around of large ships in a limited space.

[0032] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features, and advantages of the embodiments of the present application more obvious and understandable, the following specifically exemplifies the specific implementation manners of the present application. Brief Description of the Drawings

[0033] Figure 1 It is a schematic structural diagram of the present invention;

[0034] Figure 2 It is a schematic structural diagram of the supercritical carbon dioxide power generation mechanism of the present invention;

[0035] Figure 3 It is a schematic structural diagram of the inclined pipeline motor pump assembly of the present invention;

[0036] Figure 4 It is a schematic structural diagram of the "well"-shaped navigation / turning structure of the present invention;

[0037] Figure 5 It is a working flow chart of the present invention;

[0038] In the figure: switched reluctance motor 1, power output shaft 2, laborious lever 3, chain blade 4, bow 5, fulcrum 6, switched reluctance speed regulation motor unit 7, carbon dioxide gas circuit 8, electromagnetic heating box 9, exhaust pipe 10, intake valve core 11, one-way high-pressure valve 12, inclined pipe 13, switched reluctance speed regulation motor stator winding 14, rotor 15, bracket 16, propeller 17, bearing 18, bearing bracket 19, filter screen cover 20, windshield wiper 21, water inlet pipe 22, disc valve 23. Detailed implementation manners

[0039] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some but not all of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments in this application belong to the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the drawings are intended to cover non-exclusive inclusion.

[0041] Reference to "embodiment" herein means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0042] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0043] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, the "connection" or "coupling" of mechanical structures can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection through a fixing member, such as a screw, bolt, or other fixing member; a physical connection can also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection can also be an integral connection, such as a welded, bonded, or integrally formed connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0044] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0045] Please refer to Figures 1 - 5 , the present invention discloses a ship icebreaking device based on a switched reluctance motor, which includes a plurality of icebreaking components connected in series side by side;

[0046] Each of the icebreaking components includes a switched reluctance motor 1, a power output shaft 2, a piston connecting rod mechanism, a force-consuming lever 3, and a chain blade 4; if the width of the ship's bow is 70 meters and the interval between adjacent icebreaking components is 1 meter, then 70 icebreaking components are formed;

[0047] The switched reluctance motor 1 is connected to the piston connecting rod mechanism through the power output shaft 2. The output end of the piston connecting rod mechanism is connected to one end of the force-consuming lever 3. The chain blade 4 is installed at the end of the force-consuming lever 3 through a detachable structure. The piston connecting rod mechanism includes a piston 24 and a connecting rod 25. The piston 24 makes a reciprocating linear motion in the cylinder and is connected to the power output shaft through the connecting rod 25 to convert the linear motion into the rotation of the power output shaft; the switched reluctance motor 1 has a double salient pole structure, and a pair of radially opposite electromagnetic windings is a "phase". The switched reluctance speed control motor is used, which has the advantages of simple structure, high reliability, good speed regulation performance, and large starting torque. Multiple phases can be made according to requirements, and the single-machine capacity can reach more than 20 megawatts, which can provide powerful and stable power for icebreaking operations.

[0048] The bow 5 is provided with a fulcrum 6, and the force-consuming lever 3 is installed at the fulcrum 6 through a bearing and can rotate around the fulcrum.

[0049] The present invention further includes a supercritical carbon dioxide power generation mechanism, which includes a switched reluctance speed regulation motor unit 7, a carbon dioxide gas circuit 8, an electromagnetic heating box 9, and an exhaust pipe 10. The switched reluctance speed regulation motor unit 7 adopts a 12 / 8 structure with four units, and the single-machine power is 20 megawatts. The carbon dioxide gas circuit 8 is used to transport carbon dioxide gas above the critical point. The electromagnetic heating box 9 is used to heat the carbon dioxide gas to the supercritical state. The exhaust pipe 10 is arranged at the bottom dead center position of the piston movement. The carbon dioxide gas circuit 8 includes an intake valve core 11 and a one-way high-pressure valve 12. The intake valve core 11 is used to fill carbon dioxide gas. The one-way high-pressure valve 12 is pushed open when the pressure and temperature exceed the critical value, allowing the carbon dioxide gas to enter the electromagnetic heating box. Supercritical carbon dioxide is used for power generation, and only by cutting the ice layer at high speed can ice be broken efficiently. The length of the force-consuming lever can be adjusted by adjusting the nut for telescoping. The telescoping part of the force-consuming lever is made of a strong hollow sleeve. Whether it is the Arctic or the Antarctic, the effect of cutting tofu can be achieved. The commonality of high-speed cutting is not limited to chain blades, and diverse blades such as disc saw-tooth blades and long-strip saw-tooth blades can also be used. It is preferably to use the hardest and most wear-resistant materials to cut the ice layer at high speed under extremely cold conditions. Each adjacent two ice-breaking components are reinforced with a cross beam. The cross beam is hollow, and a switched reluctance speed regulation motor is installed inside the cross beam. The motor speed is as high as tens of thousands of revolutions per minute, and chain blades are installed at both ends of the motor. Diverse blades can be installed. For example, electric shears in garment factories are used to cut fabrics, disc cutters are used to cut reinforced concrete roads and floors, and chain cutters are used to cut down trees, etc., which have practical applications and inspired this invention. When the force-consuming lever makes a high-speed reciprocating linear motion up and down, the potential energy of a drop of about 10 meters will fall at high speed to generate high-energy kinetic energy. Coupled with the high-speed cutting of the motor, it is as easy as cutting tofu. The force-consuming lever is labor-saving when falling and laborious when rising, and the power source is the high-speed operation of the motor. When the cross beam makes a reciprocating high-speed linear motion up and down, it can generate a violent impact on the cut ice strips, causing the ice strips to break instantly and sink, quickly achieving the purpose of ice breaking.

[0050] Carbon dioxide gas above the critical point is filled into the carbon dioxide gas circuit. After being powered on, the switched reluctance speed regulation motor compresses the carbon dioxide, and the pressure and temperature increase, pushing open the one-way high-pressure valve. The carbon dioxide gas is heated by the electromagnetic heating box to reach the supercritical state, obtaining supercritical high-energy fluid power to push the piston to do work, driving the switched reluctance generator set and the large-capacity exciter to operate. After the work is completed, the carbon dioxide gas enters the cylinder through the carbon dioxide gas circuit for energy transfer and cyclic compression.

[0051] The present invention further includes an inclined pipeline motor pump assembly, which is installed at the bottom of a ship. The inclined pipeline motor pump assembly includes an inclined pipeline 13, a switched reluctance speed-regulating motor stator winding 14, a rotor 15, a bracket 16, a propeller 17, bearings 18 and a bearing bracket 19. The slope angle of the inclined pipeline 13 is 7-9°. The rotor 15 is a hollow pipeline. The propeller 17 is embedded in the inner wall of the hollow pipeline. The hollow pipeline rotates at ultra-high speed, and the bearings 18 and the bearing bracket 19 are provided at both ends thereof, and magnetic suspension bearings are adopted. The switched reluctance speed-regulating motor stator winding 14, the rotor 15 and the bracket 16 constitute a motor control system for controlling the rotation of the rotor and the opening and closing of a valve. A filter screen cover 20 and a wiper 21 are provided in front of the water inlet of the inclined pipeline 13 to prevent large fish from being caught by the propeller. When the ship is sailing, the motor control system opens the valve by rotating a gear. The filter screen cover and the wiper are provided in front of the water inlet to prevent large fish from being caught by the propeller. The power output shaft is the hollow pipeline, and its diameter can be customized according to actual requirements, generally 2 meters to 3 meters or even thicker. Bearings and brackets are installed at both ends of the pipeline, and the power is provided by a supercritical carbon dioxide generating set, which is equipped with a large-capacity exciter, so that the single-unit capacity of the generator can reach more than 20 megawatts. When the water inlet on the left side is lifted upward with an inclination angle of 7-9°, the ship sails to the left; on the contrary, by adjusting the lifting direction of the water inlet, the ship can be controlled to sail in the corresponding direction. The ultra-high-speed water flow in the pipeline has strong kinetic energy and potential energy of drop. The principle of this device is similar to the structure of a hydropower station, and flexible operations such as turning in place of the ship can be achieved by adjusting the water flow. The inclined pipeline is fixed and fixed to the compressed air tank with rivets. When sailing or turning in a certain direction, only the valve needs to be opened and the motor pump needs to be started. On the contrary, the valve and the motor pump are closed at the other end. In addition, 50 MPa of air is filled to bear the total weight of the carrier ship, its own weight, goods and various equipment, and to protect the overall structure of the ship from deformation and improve buoyancy.

[0052] The present invention also includes a "well"-shaped navigation / turning structure, which consists of four identical components mounted on the bottom of the vessel. Each component includes multiple inclined water inlet pipes 22 with an inclination angle of 7-9 degrees. Disc valves 23 are installed at each end of the water inlet pipes 22. These disc valves 23 are driven by a motor and open and close controlled by the rotation of bearings. A motor and propeller are installed within the water inlet pipes 22. The motor drives the propeller, pushing water in and out of the pipes. When the vessel needs to turn in ice, the crew issues a steering command from the control room through the vessel's master control system. The control system determines the steering direction based on the command. The steering power is generated by a high-power electric motor. For example, to turn left, an opening signal is sent to the motor driving the disc valve in the left component, simultaneously activating the motor in the pipe to drive the propeller. Driven by the propeller, water flows in and out of the pipes in the predetermined direction, generating leftward thrust. Turning right and other angles follow the same operating principle and are achieved by controlling the opening and closing of valves in different components. The crew can flexibly use this structure to achieve precise steering control of the ship in ice areas according to actual navigation needs.

[0053] Working principle: A method for using a ship icebreaking device based on a switched reluctance motor includes the following steps:

[0054] A. Use a supercritical carbon dioxide power generation mechanism to generate electricity. In this mechanism, carbon dioxide gas above its critical point is fed into a carbon dioxide gas circuit. It is compressed by a switched reluctance motor, and when the pressure and temperature increase, a one-way high-pressure valve is pushed open. The carbon dioxide gas is heated by an electromagnetic heating box to a supercritical state, and the supercritical high-energy fluid power is obtained to push the piston to generate electricity.

[0055] B. Each phase of the first switched reluctance motor is first connected in parallel to the grid power supply to obtain electrical energy. After the other switched reluctance motors obtain the high-energy supercritical carbon dioxide fluid power and output electrical energy, they are replaced with the first switched reluctance motor in a phase-by-phase power supply. Each phase of the switched reluctance motor operates independently and has the ability to operate in the event of a phase loss fault.

[0056] C. Using the above electric energy to drive the switched reluctance speed regulating motor, thereby driving the piston connecting rod mechanism of multiple ice-breaking components connected in parallel in series in the ice-breaking device to reciprocate up and down;

[0057] D. The piston connecting rod mechanism drives the laborious lever to make high-speed up and down cutting movements around the fulcrum, and cuts and breaks the ice layer through the chain blade. Since each ice-breaking component is reinforced with a cross beam, the cross beam between two adjacent ice-breaking components will violently impact the cut ice strips during the reciprocating high-speed up and down movement. The violent impact causes the ice strips to break into pieces and sink instantly. Inside the cross beam is a switched reluctance speed-regulating motor with a speed of tens of thousands of revolutions per minute. Chain blades are installed at both ends of the motor. Under the common feature of high-speed ice cutting, it is not limited to this, and disc-shaped serrated blades or strip-shaped serrated blades can also be used.

[0058] E. By controlling the opening and closing of the circular disc valves at both ends of the inclined pipe in the inclined pipe motor water pump assembly on the ship, and the rotation of the motor-driven propeller, the water flow is made to enter and exit the pipe to generate thrust to assist the ship in sailing and turning.

[0059] The structure and characteristics of the switched reluctance speed-regulating motor are different from other types of motors. It cannot operate with a phase loss. It takes advantage of the strong ability to operate with a phase loss fault to replace the power supply, no longer relying on the grid power supply, and realizes the mutual conversion and generation among the three high energies of high-energy fluid dynamics, mechanical energy, and electrical energy, without interruption, without difference, without energy loss, and without considering energy attenuation. Carbon dioxide waste gas can be recycled and infinitely compressed. The electromagnetic heating box can obtain higher-energy supercritical carbon dioxide fluid power, combined with a large-capacity exciter, so as to output powerful electrical energy. As one end of the motor, the switched reluctance speed-regulating motor does not cut the magnetic force line, and the magnetic flux closes along the minimum path. One end is magnetic pulling force and the other end is magnetic thrust force, with a high energy conversion rate, thus outputting powerful mechanical energy.

[0060] In addition, during the installation of the ship power system, according to the design requirements, each phase of the first switched reluctance motor is connected in parallel with the grid power supply through a dedicated circuit to ensure firm connection and stable electrical performance. At the same time, other switched reluctance motors are accurately docked with the power output end of the supercritical carbon dioxide power generation system so that they can effectively obtain the power of the supercritical carbon dioxide high-energy fluid and convert it into electrical energy output. In addition, a dedicated power supply switching control circuit and related sensors are set up to monitor the working state of each phase of the motor and control the switching operation of the power supply. When the ship starts and begins to operate, the first switched reluctance motor first obtains electrical energy through parallel connection with the grid power supply and starts to work. As the supercritical carbon dioxide power generation system gradually operates stably and generates high-energy fluid power, other switched reluctance motors start to convert the power into electrical energy output. At this time, the power supply switching control circuit starts to replace the electrical energy output by other switched reluctance motors with the phases of the first switched reluctance motor one by one according to the preset program and the working state of the motor. During this process, if a certain phase fails, the sensor will immediately detect it and feedback the signal to the control system. The control system automatically adjusts the working parameters of other phases according to the characteristics of the motor running with a missing phase to ensure that the motor can still operate normally, and at the same time issues a fault alarm signal to remind the crew to conduct fault troubleshooting and repair. In this way, the unique advantages of the switched reluctance motor are fully utilized to ensure the reliable operation of the ship's power system under various complex working conditions.

[0061] The ship ice-breaking device is applied to the ship navigation scenarios in polar or cold seas. The application scenarios are not limited to this. Due to its small volume and high energy density, especially in the narrow spaces of ships, boats, and vessels, several supercritical carbon dioxide power generation sets can also be installed to replace nuclear fuel and fossil fuels to obtain electrical energy, which is efficiently utilized. By adopting superconducting technology and installing a superconducting electromagnetic thruster, the ship can reach a speed of up to 270 nautical miles per hour. Its advantages of being quiet, super-fast, energy-saving, and environmentally friendly are worthy of being vigorously promoted and used, and it can replace undersea tunnels and cross-sea bridges. It can also assemble several groups of supercritical carbon dioxide power generation sets to supply the high-energy-consuming power sources required for various high-tech weapons, such as the six-in-one integrated joint combat system of the sea, land, air, space, electricity, and network, which has many typical advantages.

[0062] Specific functions include: Icebreaking operation: Through the collaborative work of multiple icebreaking components connected in parallel and in series, the switched reluctance motor is used to drive the piston connecting rod mechanism, driving the laborious lever and the chain blade to perform high-frequency cutting and crushing on the ice layer, applicable to ice layers with a thickness ≤ 3 m and a hardness ≤ 50 MPa; Power supply: The supercritical carbon dioxide power generation mechanism provides electrical energy for the ship, driving the switched reluctance speed control motor and other electrical equipment to achieve efficient energy recycling of the power system; Navigation control: Through the inclined pipe motor water pump assembly and the "well"-shaped navigation / turning structure, the water flow direction and thrust are controlled to achieve the forward, backward and ±90° flexible turning of the ship in the ice area, and the turning radius is reduced by 40%-60% compared with traditional ships; Environmental protection and energy conservation: The carbon dioxide closed-cycle power generation system is adopted, without the emission of traditional fuel pollutants, and the energy utilization rate is increased by more than 30% compared with the diesel power system. In addition, the switched reluctance motor has the ability to operate with a phase loss fault, ensuring the reliability of polar navigation.

[0063] In summary, the present invention uses a switched reluctance motor as the power source, which has a large starting torque and good speed regulation performance, and can provide strong and flexibly adjustable power for icebreaking operations. Compared with traditional power devices, the icebreaking efficiency is greatly improved, and ice layers with different thicknesses and hardnesses can be quickly and effectively broken; Multiple icebreaking components are connected in parallel and in series, cooperating with the laborious lever and the chain blade, increasing the icebreaking area and cutting force, making the icebreaking process more efficient and stable.

[0064] As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A ship ice-breaking device based on a switched reluctance motor, characterized in that: It includes multiple ice-breaking components connected in series side by side; Each of the ice-breaking components includes a switched reluctance motor (1), a power output shaft (2), a piston connecting rod mechanism, a laborious lever (3), and a chain blade (4); The switched reluctance motor (1) is connected to the piston connecting rod mechanism through the power output shaft (2). The output end of the piston connecting rod mechanism is connected to one end of the laborious lever (3). The chain blade (4) is installed at the end of the laborious lever (3) through a detachable structure; A fulcrum (6) is provided at the bow (5). The laborious lever (3) is installed at the fulcrum (6) through a bearing and can make high-speed reciprocating linear motion up and down around the fulcrum; 2. The ship ice-breaking device based on a switched reluctance motor according to claim 1, characterized in that: It also includes a supercritical carbon dioxide power generation mechanism. The supercritical carbon dioxide power generation mechanism includes a switched reluctance speed regulating motor unit (7), a carbon dioxide gas circuit (8), an electromagnetic heating box (9), and an exhaust pipe (10). The switched reluctance speed regulating motor unit (7) adopts a 12 / 8 structure with four units, and the single-unit power is 20 megawatts. The carbon dioxide gas circuit (8) is used to transport carbon dioxide gas above the critical point. The electromagnetic heating box (9) is used to heat the carbon dioxide gas to a higher supercritical state. The exhaust pipe (10) is arranged at the lower dead center position of the piston operation. The carbon dioxide gas circuit (8) includes an intake valve core (11) and a one-way high-pressure valve (12). The intake valve core (11) is used to fill carbon dioxide gas. The one-way high-pressure valve (12) is pushed open when the pressure and temperature exceed the critical value, allowing the carbon dioxide gas to enter the electromagnetic heating box; 3. The ship icebreaking device based on a switched reluctance motor according to claim 1, characterized in that: It also includes an inclined pipe motor pump assembly. The inclined pipe motor pump assembly is installed at the bottom of the ship. The inclined pipe motor pump assembly includes an inclined pipe (13), a switched reluctance speed regulating motor stator winding (14), a rotor (15), a bracket (16), a propeller (17), a bearing (18), and a bearing bracket (19). The slope angle of the inclined pipe (13) is 7-9°. The rotor (15) is a hollow pipe. The propeller (17) is embedded in the inner wall of the hollow pipe. The hollow pipe rotates at a super-high speed, and bearings (18) and bearing brackets (19) are provided at both ends, using magnetic levitation bearings. The switched reluctance speed regulating motor stator winding (14), the rotor (15), and the bracket (16) constitute a motor control system for controlling the rotation of the rotor and the opening and closing of the valve; 4. The ship ice-breaking device based on a switched reluctance motor according to claim 3, characterized in that: A filter screen cover (20) and a wiper (21) are provided in front of the water inlet of the inclined pipe (13) to prevent large fish from being caught in the propeller; 5. The ship ice-breaking device based on a switched reluctance motor according to claim 1, characterized in that: It also includes a "well"-shaped navigation / turning structure. The "well"-shaped navigation / turning structure is composed of four identical components, and the four identical components are installed at the bottom of the ship.

6. The ship icebreaking device based on a switched reluctance motor according to claim 5, characterized in that: Each component comprises a plurality of inclined water inlet pipes (22), wherein the inclination angle of the water inlet pipes (22) is 7-9 degrees. Disc valves (23) are provided at both ends of the water inlet pipes (22), and the disc valves (23) are driven by a motor and are opened and closed by rotating bearings. A motor and a propeller are provided in the water inlet pipes (22), and the motor is used to drive the propeller to rotate and push water into and out of the water inlet pipes.

7. The ship ice-breaking device based on a switched reluctance motor according to claim 1, characterized in that: The piston-connecting rod mechanism comprises a piston (24) and a connecting rod (25). The piston (24) performs reciprocating linear motion in the cylinder and is connected to the power output shaft through the connecting rod (25), thereby converting the linear motion into rotation of the power output shaft.

8. The ship icebreaking device based on a switched reluctance motor according to claim 1, characterized in that: The switched reluctance motor (1) has a double-salient pole structure, and a pair of radially opposite electromagnetic windings constitutes "one phase".

9. A method for using a ship icebreaking device based on a switched reluctance motor according to claim 1, characterized in that: The steps include: A. Use a supercritical carbon dioxide power generation mechanism to generate electricity. In this mechanism, carbon dioxide gas above its critical point is fed into a carbon dioxide gas circuit. It is compressed by a switched reluctance motor, and when the pressure and temperature increase, a one-way high-pressure valve is pushed open. The carbon dioxide gas is heated by an electromagnetic heating box to a supercritical state, and the supercritical high-energy fluid power is obtained to push the piston to generate electricity. B. Each phase of the first switched reluctance motor is first connected in parallel to the grid power supply to obtain electrical energy. After the other switched reluctance motors obtain the high-energy supercritical carbon dioxide fluid power and output electrical energy, they are replaced with the first switched reluctance motor in a phase-by-phase power supply. Each phase of the switched reluctance motor operates independently and has the ability to operate in the event of a phase loss fault. C. Using the above electric energy to drive the switched reluctance speed regulating motor, thereby driving the piston connecting rod mechanism of multiple ice-breaking components connected in parallel in series in the ice-breaking device to reciprocate up and down; D. The piston-connecting rod mechanism drives the lever to perform high-speed cutting movements up and down around the fulcrum, cutting and breaking the ice layer through the chain blade; E. By controlling the opening and closing of the disc valves at both ends of the inclined pipe in the inclined pipe motor water pump assembly on the ship, and the motor driving the propeller to rotate, water flows in and out of the pipe to generate thrust, assisting the ship's navigation and steering.

10. The application of the ship icebreaking device based on a switched reluctance motor according to any one of claims 1-8, characterized in that: The ship icebreaking device is applicable to ship navigation scenarios in polar regions or cold seas.

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