Offshore comprehensive power generation platform with auxiliary starting function

Abstract

The invention discloses an offshore comprehensive power generation platform with an auxiliary starting function, and relates to the field of power generation equipment. The floating platform floats on the sea surface by means of buoyancy, the equipment bin is fixedly connected to the upper surface of the platform, and the generator assembly is located in a cavity of the equipment bin and can rotate to generate electricity. In the generator assembly, a machine cover is fixedly connected to an equipment cavity, and a main shaft penetrates through the machine cover and does not make contact with a penetrating hole. A groove is cut in the upper surface of the base, the outer stator is fixedly connected to the side wall of the groove, the inner stator is fixedly connected to the main shaft, the outer stator and the inner stator are winding coils, and a rotor of a permanent magnet is arranged at a gap under a horizontal view angle. The main shaft is connected with the vertical shaft wind energy capturing device and located above the equipment bin in the rotating direction G1, the vertical shaft wind energy capturing device and the vertical water energy capturing device are located below the platform, the rotating direction G2 is opposite to the G1, the platform further comprises an inner stator electrifying assembly and an outer stator electrifying assembly, and the inner stator electrifying assembly and the outer stator electrifying assembly assist the main shaft in rotating and store electric energy.

Description

Technical Field

[0001] The present invention belongs to the technical field of offshore power generation, and particularly relates to an offshore integrated power generation platform with an auxiliary starting function. Background Art

[0002] An offshore power generation platform is a large infrastructure specifically used for developing and utilizing renewable energy (such as wind energy, wave energy, tidal energy, etc.) for power generation in a marine environment.

[0003] Generally, the wind power generation and hydraulic power generation of an offshore power generation platform are two independent power generation systems. The reason is that currently, the wind power generation and hydraulic power generation are usually not coaxial, which leads to a large spatial distribution distance between the two on the offshore power generation platform. The power generation equipment of the two is spaced far apart in space and cannot be integrated into one power generation system. The two power generation systems occupy a large space.

[0004] Assume that the wind power generation and hydraulic power generation are coaxial for power generation, and the hydraulic power generation does not use a lift-type water turbine. The main reason is that although the lift-type water turbine has the advantage of high power generation efficiency, its starting torque is large, it is difficult to self-start, and it is difficult to quickly reach the rated speed, resulting in a waste of a large amount of marine energy. As important components of marine energy, tidal current energy and wind energy currently do not have a power generation device that can effectively combine the two.

[0005] Therefore, it is necessary to design an offshore integrated power generation platform with an auxiliary starting function to effectively combine the two, which can not only use a lift-type water turbine as the hydraulic power generation equipment, but also not interfere with the wind power generation when assisting in starting the lift-type water turbine. Summary of the Invention

[0006] In order to solve the above problems, the present invention proposes an offshore integrated power generation platform with an auxiliary starting function.

[0007] In order to achieve the above object, the present invention proposes the following technical solutions: An offshore integrated power generation platform with an auxiliary starting function includes the following structures: A floating platform that floats on the sea surface relying on its own buoyancy; An equipment compartment fixedly connected to the upper surface of the floating platform; A generator assembly located in the cavity of the equipment compartment and capable of rotating for power generation; A main shaft capable of rotating the power generation assembly; The generator assembly includes: A machine cover fixedly connected in the equipment cavity; the main shaft passes through the machine cover, and a through hole for the main shaft to pass through is provided on the machine cover, and the main shaft does not contact the through hole; A machine base located below the machine cover and fixedly connected to the main shaft; a groove is formed by cutting downward on the upper surface of the machine base; The outer stator is fixedly connected to the side wall of the groove and is a winding coil; The inner stator is fixedly connected to the main shaft and is a winding coil; when viewed horizontally, there is a gap between the outer stator and the inner stator; The rotor is located in the gap between the outer stator and the inner stator and is a permanent magnet; A vertical-axis wind energy capture device for rotating the rotor is connected to the main shaft. It is located above the equipment bin and is set to rotate in the direction of G1; a vertical-axis water energy capture device for rotating the outer stator and the inner stator simultaneously is also connected to the main shaft. It is located below the floating platform and is set to rotate in the direction of G2; G1 and G2 are in opposite directions; It also includes inner and outer stator power-on components, which are used to assist the rotation of the main shaft and can also store the electrical energy generated by the inner stator and the outer stator.

[0008] Whether only the vertical-axis wind energy capture device rotates, or only the vertical-axis water energy capture device rotates, or the two rotate in different directions, essentially, it is converted into the rotation of the inner stator and the outer stator and the cutting of magnetic induction lines by the structural design of this solution. Through the design of this solution, only one set of power generation components (inner stator, outer stator, and rotor) is used, eliminating the problem of large space occupation by two sets of power generation equipment. Moreover, since there is only one set of power generation equipment, the problem of asynchronous power generation of the vertical-axis wind energy capture device and the vertical-axis water energy capture device is eliminated. In addition, the vertical-axis wind energy capture device and the vertical-axis water energy capture device rotate in opposite directions, and the total speed of cutting the magnetic induction lines is not reduced compared to the independent operation of two sets of power generation equipment, so the power generation efficiency is not reduced. In summary, this solution not only saves space but also does not reduce the power generation efficiency.

[0009] Further, the vertical-axis wind energy capture device includes: a wind turbine shaft and a plurality of vertical wind blades installed thereon; among them, the wind turbine shaft is hollow, the wind turbine shaft is sleeved on the main shaft, the inner wall of the wind turbine shaft is connected to the outer wall of the main shaft through a first bearing, and the lower end of the wind turbine shaft passes through the aforementioned through hole; the rotor includes a connecting plate and a permanent magnet assembly, and the wind turbine shaft is fixedly connected to the connecting plate.

[0010] Further, the vertical-axis water energy capture device includes a water turbine shaft and a plurality of vertical water blades installed thereon; the water turbine shaft is fixedly connected to the main shaft and is kept coincident with the axis of the main shaft; the installation direction of the airfoil of the vertical water blade is opposite to that of the vertical wind blade.

[0011] The vertical-axis water energy capture device and the vertical-axis wind energy capture device are simply designed and are relatively easy to install on the main shaft.

[0012] Further, the inner and outer stator power-on components include: Vertical grooves are opened on the main shaft and are formed by cutting downward from the upper surface of the main shaft; The support rod includes a vertical rod and a bent rod. The vertical rod is located in the vertical groove and does not contact the vertical groove. The bent rod is fixedly connected to the vertical rod and is also fixedly connected to the upper surface of the equipment bin. The electric slip ring is located in the vertical groove. Its conducting ring part is fixedly connected to the vertical rod, and its brush part is fixedly connected to the inner wall of the vertical groove. The wire on the brush part passes through the main shaft 3 and is electrically connected to the outer stator and the inner stator at the same time. The wire of the conducting ring part is connected to the storage battery. The controller assembly and the rotational speed sensor are not only used to monitor the rotational speed of the main shaft but also used to control the circuit switching between the storage battery and the electric slip ring.

[0013] The design of the electric slip ring can use the storage battery to energize the outer stator and the inner stator, thereby realizing the auxiliary start of the main shaft. It can also store the current generated by cutting the magnetic induction line on the outer stator and the inner stator in the storage battery by means of circuit switching.

[0014] Furthermore, a rotor limiting component is provided on the rotor. The rotor limiting component includes: An electromagnet, fixedly connected to the machine cover; A brake groove, opened on the upper surface of the connecting plate, is annular. The armature of the electromagnet is located in the brake groove. A brake edge, fixedly connected to the inner wall of the brake groove. When the electromagnet is energized, the armature of the electromagnet moves upward to contact the brake edge, generating a braking force to stop the rotor from rotating. When the electromagnet is not energized, the armature of the electromagnet disengages from the brake edge, and the rotor can rotate freely.

[0015] When it is necessary to assist in increasing the rotational speed of the main shaft, the storage battery energizes the inner stator and the outer stator. If the rotor is not braked and stopped by the rotor limiting component, the generated force will cause the rotor to rotate. The rotation of the rotor will "unload the force". According to the force relationship, it can be known that the reaction force acting on the main shaft will become smaller, and the torque of the main shaft will also become smaller, which is not conducive to quickly reaching the set rotational speed and effectively generating electricity.

[0016] Furthermore, the support rod is hollowly arranged, and the wire of the conducting ring part of the electric slip ring passes through the hollow support rod and is connected to the storage battery.

[0017] It is convenient for wire threading and avoids the situation that the wire of the conducting ring part is interfered by the rotation of the main shaft.

[0018] Furthermore, the inner wall of the perforation is connected to the outer wall of the wind turbine shaft through a second bearing, and the inner wall of the connecting plate is connected to the outer wall of the main shaft through a third bearing.

[0019] Increasing the support points of the main shaft is beneficial to achieving the stability during the rotation process between the rotor and the main shaft.

[0020] Adopting the above technical solutions, the beneficial effects that can be achieved are: 1. This solution has only one set of power generation components (outer stator, inner stator, and rotor), but integrates wind power generation and hydro power generation into a whole. Compared with two sets of power generation equipment in the case of their independence, it saves the space occupied by one set of power generation components.

[0021] 2. Whether only the vertical-axis wind energy capture device rotates, or only the vertical-water energy capture device rotates, or they rotate in different directions, ultimately the outer stator and the inner stator rotate relative to the rotor. Therefore, the vertical-axis wind energy capture device and the vertical-water energy capture device are cleverly combined into one.

[0022] 3. The rotation directions of the vertical-axis wind energy capture device and the vertical-water energy capture device are designed to be opposite. This makes the total speed V1 of the outer stator and the inner stator rotating relative to the rotor have no numerical difference compared with the sum of the speeds V2 when the vertical-axis wind energy capture device and the vertical-water energy capture device operate independently. This means that the situation of reduced power generation efficiency due to slower rotation speed can be avoided.

[0023] 4. Before the outer stator and the inner stator are energized, the rotor connected to the vertical-axis wind energy capture device is "locked" (braked) by an electromagnet. Based on this, during the auxiliary start-up process of the vertical-water energy capture device (lift-type water turbine), there will be no movement interference with the vertical-axis wind energy capture device, enabling coaxial and combined power generation of wind power generation and the lift-type water turbine.

[0024] 5. The outer stator and the inner stator are designed, and the inner stator and the outer stator are located on both sides of the rotor respectively. The advantage of this design is that for winding more turns of coils only on the inner stator or the outer stator, the coils with more turns are farther away from the rotor and cannot effectively cut more magnetic induction lines. In this solution, the outer stator and the inner stator are distributed on the left and right sides of the rotor, close to the rotor. The closer to the rotor, the denser the magnetic induction lines, and the easier it is for the outer stator and the inner stator to cut the magnetic induction lines for power generation. As a result, in the case of the same power generation amount, when using the inner stator and the outer stator to cut the magnetic induction lines on both sides of the rotor simultaneously, the sum of the required number of turns of the wire is A; and when only using the inner stator or the outer stator to cut the magnetic induction lines on one side of the rotor, the required number of turns of the wire is B; then B will be greater than A. Therefore, with the design of the outer stator and the inner stator, the amount of wire winding is reduced in the case of the same power generation amount.

[0025] 6. An auxiliary start-up device for the lift-type tidal current turbine is designed to ensure that the water turbine can reach the rated speed as soon as possible when the external flow velocity reaches the predetermined starting flow velocity, so as to better utilize the tidal current energy resources. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the overall power generation platform; Figure 2 is a schematic structural diagram inside the power generation components; Figure 3 It is a schematic structural diagram of an electromagnet and a brake edge; Figure 4 It is a schematic structural diagram of a vertical rod and a bent rod.

[0027] 1. Floating platform; 2. Equipment bin; 3. Main shaft; 4. Machine cover; 5. Machine base; 6. Outer stator; 7. Inner stator; 8. Wind turbine shaft; 9. Vertical wind turbine blade; 10. Connecting plate; 11. Magnet; 12. First bearing; 13. Second bearing; 14. Third bearing; 15. Hydraulic turbine shaft; 16. Vertical hydraulic turbine blade; 17. Electromagnet; 18. Armature; 19. Brake groove; 20. Brake edge; 21. Vertical groove; 22. Vertical rod; 23. Bent rod; 24. Electric slip ring; Specific embodiments

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0029] As Figure 1 shown, an offshore integrated power generation platform with an auxiliary starting function includes the following structures: The floating platform 1 can float on the sea surface relying on its own buoyancy and is connected to the seabed through ropes to maintain a certain position on the sea surface; The equipment bin 2 is fixedly installed on the upper surface of the floating platform 1; The generator assembly is located in the cavity of the equipment bin 2 and can generate electricity by rotating.

[0030] The main shaft 3 (see Figure 2 ) passes through the generator assembly, and its upper and lower ends respectively pass through the equipment bin 2 and the floating platform 1. In the Figure 1 viewing angle, it is set that the axis of the main shaft 3 is arranged vertically. The main shaft 3 can rotate, so that the generator assembly rotates and generates electricity.

[0031] Specifically, see Figure 2 , the generator assembly includes: The machine cover 4 is fixedly connected to the inner wall of the equipment cavity; the aforementioned main shaft 3 passes through the machine cover 4, a through hole for the main shaft 3 to pass through is opened in the middle of the machine cover 4, and the main shaft 3 does not contact the inner wall of the through hole, and the rotation of the main shaft 3 is not interfered by the machine cover 4.

[0032] The base 5 is fixedly connected to the main shaft 3 and rotates with the rotation of the main shaft 3. The base 5 is located below the machine cover 4 and does not contact the machine cover 4 to avoid interference from the machine cover 4 when the base 5 rotates. The base 5 is cylindrical in shape, with its axis coinciding with the axis of the main shaft. A cylindrical groove is formed by cutting downward on its upper surface.

[0033] The outer stator 6 is fixedly connected to the inner side wall of the groove of the base 5 and is a winding coil.

[0034] The inner stator 7 is located in the groove and is fixedly connected to the main shaft 3 and is also a winding coil. From a horizontal perspective, there is a gap between the outer stator 6 and the inner stator 7 instead of contact.

[0035] As Figure 1 and Figure 2 shown, it further includes a wind power driving assembly for enabling the outer stator 6 and the inner stator 7 to cut magnetic induction lines. The wind power driving assembly includes: A vertical-axis wind energy capture device, including a wind turbine shaft 8 and a plurality of vertical wind blades 9 mounted thereon. Among them, the wind turbine shaft 8 is hollow and sleeved on the main shaft 3 with its axis coinciding with the axis of the main shaft 3. The vertical-axis wind energy capture device is located above the equipment compartment 2 as a whole. The inner wall of the wind turbine shaft 8 is connected to the outer wall of the main shaft 3 through a first bearing 12, and the wind turbine shaft 8 can rotate relative to the main shaft 3 relying on the first bearing 12. The lower end of the wind turbine shaft 8 passes through the aforementioned through hole and extends into the internal cavity of the generator assembly. The inner wall of the through hole is connected to the outer wall of the wind turbine shaft 8 through a second bearing 13, and the wind turbine shaft 8 can rotate relative to the machine cover 4 relying on the second bearing 13.

[0036] The rotor is fixedly connected to the lower end of the wind turbine shaft 8 and rotates with the rotation of the wind turbine shaft 8. The rotor includes a connecting plate 10 and a permanent magnet assembly. Among them, the connecting plate 10 is in the shape of a disc, which is sleeved on the main shaft 3, and its axis coincides with the axis of the main shaft 3. It is connected to the main shaft 3 through a third bearing 14, and the upper surface of the connecting plate 10 is fixedly connected to the lower end of the wind turbine shaft 8. The permanent magnet assembly is composed of N magnets 11 spliced together. The N magnets 11 are adhesively bonded to form a circle, and the N magnets 11 are also adhesively bonded to the connecting plate 10. The formed circular permanent magnet assembly has its axis parallel to the axis of the main shaft 3. The south and north poles of the N magnets 11 are along the radial direction of the main shaft 3, and the north poles all face the inner stator 7, and the south poles all face the outer stator 6. The permanent magnet 11 assembly is located at the gap between the outer stator 6 and the inner stator 7. When the vertical axis wind energy capture device rotates, the wind turbine shaft 8 drives the rotor to rotate at the aforementioned gap, and the rotor and the outer stator 6 or the inner stator 7 generate relative rotation, so that the outer stator 6 or the inner stator 7 cuts the magnetic induction line, and an electric current is generated on the coils of the outer stator 6 and the inner stator 7. The first bearing 12, the second bearing 13 and the third bearing 14 together generate three support points for the wind turbine shaft 8, which ensures the stability of the wind turbine shaft 8 during rotation compared to only the first bearing 12 as the support point.

[0037] In order to increase the rotational speed of the rotor relative to the inner stator 7 and the outer stator 6, it is necessary to reverse the rotation directions of the inner stator 7 and the outer stator 6 compared to the rotation direction of the vertical axis wind energy capture device. Therefore, this power generation platform further includes: A vertical water energy capture device, which is a lift-type water turbine, includes a water turbine shaft 15 and a plurality of vertical water turbine blades 16 installed thereon. The vertical water energy capture device is located below the floating platform 1 and is used to rotate under water power. Its water turbine shaft 15 is fixedly connected to the main shaft 3 and remains coincident with the axis of the main shaft 3.

[0038] The installation direction of the airfoil of the vertical water turbine blade 16 is opposite to that of the vertical wind turbine blade 9. This means that when the vertical axis wind energy capture device and the vertical water energy capture device are subjected to wind power and water power in the same direction, the wind turbine shaft 8 and the water turbine shaft 15 of the two are subjected to opposite forces, so the rotation directions are opposite, which further leads to: the rotor connected to the wind turbine shaft 8 rotates in the opposite direction to the inner stator 7 and the outer stator 6 connected to the water turbine shaft 15, the rotational speed of the rotor relative to the inner stator 7 and the outer stator 6 increases, and the power generation per unit time increases.

[0039] The vertical water energy capture device is difficult to start self, and an auxiliary mechanism is required to assist the vertical water energy capture device to rotate. Therefore, this floating platform 1 is also designed with an auxiliary component, which includes: a rotor limiting component and an inner and outer stator energizing component.

[0040] Among them, the rotor limiting component includes: An electromagnet 17 (see Figure 3), which belongs to the prior art and will not be elaborated here. It includes a housing, a coil, an iron core (including an armature 18), and a spring. It is fixedly connected to the machine cover 4 and is located above the connecting plate 10. When its coil is energized, a magnetic attraction force will be generated, and thus the armature 18 will move upward under the action of this magnetic attraction force and compress the spring; when the coil is no longer energized, the elastic force of the spring is released to reset the armature 18. The electromagnet 17 is electrically connected to the controller assembly described later and is controlled by the controller assembly to be energized and de-energized.

[0041] The brake groove 19, which is annular, is opened on the connecting plate 10 and is formed by cutting downward from the upper surface of the connecting plate 10. The axis of the brake groove 19 coincides with the axis of the main shaft 3. The armature 18 of the electromagnet 17 extends downward into the brake groove 19, and a brake edge 20 is fixedly connected to the inner wall of the upper end of the brake groove 19. When the electromagnet 17 is energized, the armature 18 is moved upward by the magnetic force to compress the spring and abuts against the lower surface of the brake edge 20, thereby generating a frictional force to brake the rotor and stop it from rotating; when not energized, under the restoration of the elastic force of the spring, the armature 18 disengages from the lower surface of the brake edge 20, and the rotor can rotate freely.

[0042] The inner and outer stator power-on assemblies include: The vertical groove 21 (see Figure 4 ), which is opened on the main shaft 3, and the axis of the vertical groove 21 coincides with the axis of the main shaft 3. The shape of the vertical groove 21 is cylindrical, and it is formed by cutting downward from the upper surface of the main shaft 3.

[0043] The support rod includes a vertical rod 22 and a bent rod 23. Among them, the bent rod 23 is fixedly connected to the upper surface of the equipment bin 2. The vertical rod 22 is located in the vertical groove 21 and coincides with the axis of the vertical groove 21, and the vertical rod 22 does not contact the vertical groove 21. The bent rod 23 extends into the vertical groove 21 from the upper end of the vertical groove 21 and is fixedly connected to the vertical rod 22.

[0044] The electric slip ring 24 (see Figure 2 ), which belongs to the prior art and will not be elaborated here. It includes: a conductive ring part and a brush part, which can rotate relative to each other, and corresponding wires are connected to both of them. Its conductive ring part is fixedly connected to the vertical rod 22 and remains stationary. Its brush part is fixedly connected to the inner wall of the vertical groove 21 and rotates with the rotation of the main shaft 3. The wire on the brush part passes through the main shaft 3 and is electrically connected to both the outer stator 6 and the inner stator 7 at the same time.

[0045] The support rod is provided with a hollow interior for facilitating wire routing. The wire of the conductive ring part is electrically connected to the storage battery installed in the equipment bin 2 through the hollow support rod.

[0046] The controller component and the rotational speed sensor, which belong to the prior art, are both installed in the equipment bin 2. Among them, the rotational speed sensor is a Hall rotational speed sensor, which is used to monitor the rotational speed of the main shaft 3 and transmit the monitored rotational speed to the controller component. The controller component not only monitors the rotational speed of the main shaft 3, but also controls the circuit switching between the storage battery and the electrical slip ring 24.

[0047] The auxiliary startup process of this power generation platform First, the power generation platform monitors the seawater flow rate. Assuming that the seawater flow rate V_water is greater than or equal to the power generation flow rate threshold V 预 (set value), then the power generation platform will send a "power generation signal" to the controller component. After receiving this "power generation signal", the controller component receives the rotational speed monitored by the rotational speed sensor.

[0048] The rotational speed sensor monitors the rotational speed of the main shaft 3 and transmits it to the controller component. The controller component compares the real-time rotational speed V of the main shaft 3 实 with the preset rotational speed V 预 . If V 实 <V 预 , it indicates that the rotational speed of the main shaft 3 is relatively slow and an "auxiliary startup" operation is required. Otherwise, it indicates that the rotational speed of the main shaft 3 is relatively fast and direct power generation can be carried out without the "auxiliary startup" operation.

[0049] The specific process of the auxiliary startup is as follows: The controller component controls the electromagnet 17 to be energized. After that, the armature 18 of the electromagnet 17 generates an action to brake the rotor. Then, the controller component turns on the auxiliary startup circuit. After the circuit is turned on, due to the circuit design of the auxiliary startup circuit, the storage battery supplies power to the outside as a power source. The storage battery supplies power to both the outer stator 6 and the inner stator 7 through the wires on the brush part and the wires on the conductive ring part. After being energized, since the rotor is braked by the electromagnet 17 and cannot rotate, due to the relationship that the force is mutual, the outer stator 6, the inner stator 7, the main shaft 3 and the vertical water energy capture device rotate as a whole, showing the characteristics of a motor. And, the main shaft 3 maintains its rotational speed under the impact of the water flow. During this process, the rotational speed sensor still continues to monitor the rotational speed of the main shaft 3.

[0050] When V 实 ≥V 预 , it indicates that the auxiliary startup of the main shaft 3 has been completed. Under the impact of the water flow, it can always maintain V 实 ≥ V pre. At this time, the controller component switches the auxiliary startup circuit to a charging circuit. Due to the circuit design of the charging circuit, the outside charges the storage battery.

[0051] The specific process is as follows: The controller component cuts off the power supply of the electromagnet 17 to release the rotor, enabling the rotor to rotate freely under the action of wind force. Generally, the wind direction and water flow direction in the same area are consistent. Assuming that the impact directions of both wind force and water flow are in the R direction, under this water flow condition, the vertical water energy capture device and the main shaft 3 rotate synchronously, with the set rotation direction being G1. The outer stator 6 and the inner stator 7 continuously cut the magnetic induction lines to generate electricity in the magnetic field composed of N permanent magnetic fields. At the same time, due to the installation direction of the airfoil of the vertical wind energy capture device, under the action of wind force, the rotation direction of the vertical wind energy capture device is G2, and G2 is opposite to G1. The vertical wind energy capture device together with the rotor rotates as a whole in the direction of G2. Compared with the situation where the rotor does not rotate, when the rotor rotates in the opposite direction, the speed at which the outer stator 6 and the inner stator 7 cut the magnetic induction lines becomes faster, the power generation per unit time increases, and the generated current is transmitted from the outer stator 6 and the inner stator 7, through the wires on the slip ring part and the wires on the brush part, to the storage battery to supply power to the storage battery.

[0052] The advantages of this solution are as follows: In the original offshore power generation, wind power generation and water power generation were independent, and both included power generation equipment. During the power generation process, the electricity generated by both was stored in their respective power generation storage units. The two storage units occupied a large amount of space. This solution shares one storage unit for the two types of power generation, saving space. At the same time, two coils, namely the inner stator 7 and the outer stator 6, are also designed, and when rotating one circle, the power generation is increased. By making the rotation directions of wind power generation and water power generation opposite, the wind speed and water flow speed are reasonably utilized. Compared with the original situation where wind power generation and water power generation were independent, the total speed of cutting the magnetic induction lines has not decreased. Therefore, the power generation per unit time has not decreased. This means that while integrating wind power generation and water power generation, this solution does not reduce the power generation but reduces the occupied space.

[0053] Inspired by the above ideal embodiments based on the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An offshore integrated power generation platform with an auxiliary starting function, characterized in that, It includes the following structures: A floating platform that floats on the sea surface relying on its own buoyancy; An equipment compartment fixedly connected to the upper surface of the floating platform; A generator assembly located in the cavity of the equipment compartment and capable of rotating to generate electricity; A main shaft capable of rotating the power generation assembly; The generator assembly includes: A machine cover fixedly connected in the equipment cavity; The main shaft passes through the machine cover. There is a perforation on the machine cover for the main shaft to pass through, and the main shaft does not contact the perforation; A machine base located below the machine cover and fixedly connected to the main shaft; a groove is formed by cutting downward on the upper surface of the machine base; An outer stator fixedly connected to the side wall of the groove and being a winding coil; An inner stator fixedly connected to the main shaft and being a winding coil; in a horizontal view, there is a gap between the outer stator and the inner stator; A rotor located in the gap between the outer stator and the inner stator and being a permanent magnet; A vertical-axis wind energy capture device for rotating the rotor is connected to the main shaft. It is located above the equipment compartment and the set rotation direction is G1; a vertical-axis water energy capture device for rotating the outer stator and the inner stator simultaneously is also connected to the main shaft. It is located below the floating platform and the set rotation direction is G2; G1 and G2 are in opposite directions; It also includes inner and outer stator power-on assemblies for assisting the rotation of the main shaft and capable of storing the electric energy generated by the inner stator and the outer stator.

2. The integrated offshore power generation platform with an auxiliary starting function according to claim 1, characterized in that The vertical-axis wind energy capture device includes: a wind turbine shaft and a plurality of vertical wind turbine blades mounted thereon; wherein, the wind turbine shaft is hollow, the wind turbine shaft is sleeved on the main shaft, and the inner wall of the wind turbine shaft is connected to the outer wall of the main shaft through a first bearing. The lower end of the wind turbine shaft passes through the aforementioned perforation; the rotor includes a connecting plate and a permanent magnet assembly, and the wind turbine shaft is fixedly connected to the connecting plate.

3. The integrated offshore power generation platform with an auxiliary starting function according to claim 2, wherein The vertical-axis water energy capture device includes: a water turbine shaft and a plurality of vertical water turbine blades mounted thereon; the water turbine shaft is fixedly connected to the main shaft and keeps coinciding with the axis of the main shaft; The installation direction of the airfoil of the vertical water turbine blades is opposite to that of the vertical wind turbine blades.

4. A marine integrated power generation platform with an auxiliary starting function according to claim 3, characterized in that, The inner and outer stator power-on assemblies include: A vertical groove formed by cutting downward from the upper surface of the main shaft on the main shaft; A support rod including a vertical rod and a bent rod. The vertical rod is in the vertical groove and does not contact the vertical groove; the bent rod is fixedly connected to the vertical rod and the bent rod is fixedly connected to the upper surface of the equipment compartment; A slip ring is in the vertical groove. The conductive ring part of it is fixedly connected to the vertical rod; the brush part of it is fixedly connected to the inner wall of the vertical groove; the wire on the brush part passes through the main shaft 3 and is electrically connected to the outer stator and the inner stator at the same time; the wire of the conductive ring part is connected to a storage battery; A controller assembly and a rotational speed sensor are not only used to monitor the rotational speed of the main shaft, but also used to control the circuit switching between the storage battery and the slip ring.

5. The integrated offshore power generation platform with an auxiliary starting function according to claim 4, characterized in that, A rotor limit assembly is provided on the rotor. The rotor limit assembly includes: An electromagnet fixedly connected to the machine cover; A brake groove is formed on the upper surface of the connecting plate in a ring shape, and the armature of the electromagnet is in the brake groove; A brake edge is fixedly connected to the inner wall of the brake groove; when the electromagnet is energized, the armature of the electromagnet moves upward to contact the brake edge, generating a braking force to stop the rotation of the rotor; when the electromagnet is not energized, the armature of the electromagnet is separated from the brake edge and the rotor can rotate freely.

6. The integrated offshore power generation platform with an auxiliary starting function according to claim 5, characterized in that, The support rod is hollow, and the wire of the conductive ring part of the slip ring passes through the hollow support rod and is connected to the storage battery.

7. An integrated offshore power generation platform with an auxiliary starting function according to claim 6, characterized in that, The inner wall of the perforation is connected to the outer wall of the wind turbine shaft through a second bearing, and the inner wall of the connecting plate is connected to the outer wall of the main shaft through a third bearing.

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