A hydraulic-driven generator set

Abstract

The present invention provides a hydraulic-driven generator set, which includes a hydraulic power device and a power generation component. The hydraulic power device includes an outer ring and a core body. Between the nozzle and the drain port on the outer circumferential surface of the core body, there is at least one or more stages of secondary flow channels. Water flows in from the liquid inlet channel, and is ejected step by step through the nozzle of the core body and the secondary flow channels, acting on at least two driving recesses in the circumferential direction of the outer ring, generating a thrust on these driving recesses to push the outer ring to rotate and do work, realizing power output. Finally, the water is discharged through the drain port of the core body via the liquid discharge channel. The rotation work of the outer ring serves as the kinetic energy for the power generation component to generate electricity.

Description

Technical Field

[0001] The present invention relates to the field of hydropower generation, and particularly to a hydraulic-driven generator set with a small volume and high conversion efficiency. Background Art

[0002] A hydraulic generator set is a mechanical device that converts the potential energy of water into electrical energy. Traditional hydraulic generator sets include a water turbine and a generator. A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy, and it belongs to the turbomachinery in fluid machinery. Most modern water turbines are installed in hydropower stations to drive generators to generate electricity. In a hydropower station, the water in the upstream reservoir is led to the water turbine through a water intake pipe, which drives the rotation of the water turbine runner and drives the generator to generate electricity. The water that has done work is discharged downstream through the tail water pipe. The higher the water head and the larger the flow rate, the greater the output power of the water turbine.

[0003] Existing water turbines generally consist of flow-through components such as a volute, fixed guide vanes, a guide water mechanism, a runner, and a draft tube, and rely on the runner to convert the potential energy of water flow. Existing water turbines generally have problems such as complex structure, large volume, and low conversion efficiency. Summary of the Invention

[0004] Therefore, the present invention provides a new hydraulic-driven generator set, which has the characteristics of small volume, simple structure, and high conversion efficiency.

[0005] To achieve the above object, the technical solution provided by the present invention is as follows:

[0006] A hydraulic-driven generator set includes a hydraulic power device and a power generation component. The hydraulic power device includes:

[0007] An outer ring, on the inner circumferential surface of which a plurality of driving recesses are provided in the circumferential direction;

[0008] A core body, which is coaxially arranged inside the outer ring and can rotate relative to the outer ring. At least one spray port, at least one discharge port, and at least one secondary flow channel located between the spray port and the discharge port are provided on the outer circumferential surface of the core body;

[0009] At least one liquid inlet channel, which communicates with at least one spray port; and

[0010] At least one liquid discharge channel, which communicates with at least one discharge port;

[0011] Water flows in from the liquid inlet channel, is ejected step by step through the spray port and the secondary flow channel of the core body, acts on at least two driving recesses on the circumference of the outer ring, generates a thrust on these driving recesses to push the outer ring to rotate and do work, realizes power output. Finally, the water flows out through the discharge port of the core body and through the liquid discharge channel;

[0012] The rotational work of the outer ring serves as the kinetic energy for the power generation component to generate electricity.

[0013] Further, at least one liquid inlet channel, at least one nozzle, at least two driving recesses, at least one secondary flow channel, at least one drain port, and at least one liquid discharge channel form an independent working unit, and the hydraulic power device includes at least one independent working unit.

[0014] Further, the nozzles and the secondary flow channels on the core body communicate with the corresponding driving recesses on the outer ring, and the secondary flow channels are arranged along the circumferences of the core body or the outer ring.

[0015] Further, the liquid inlet channel and the liquid discharge channel are formed in the core body.

[0016] Still further, the core body includes:

[0017] A liquid inlet channel that forms a nozzle on the circumferential surface of the core body, and its path is an arc line extending from the middle to the outside. The nozzle communicates with the corresponding driving recess on the outer ring to form a first-stage flow channel;

[0018] A secondary flow channel, whose path is an arc line that bends and extends from the edge of the core body inward and then to the edge. Each secondary flow channel communicates with the two adjacent driving recesses corresponding to the outer ring, and forms an N-stage flow channel along the circumference of the core body, where N is a natural number greater than or equal to 2;

[0019] Each stage of the flow channel and the corresponding driving recess on the outer ring cooperate to form a multi-stage stroke structure with decreasing hydraulic energy.

[0020] Further, the secondary flow channel includes a return channel and a communicating stroke channel. The return channel communicates with the corresponding driving recess on the outer ring, and the stroke channel communicates with another driving recess.

[0021] Still further, the path of the liquid inlet channel of the core body is a logarithmic spiral line extending from the middle to the outside. The pole of the logarithmic spiral line is set on the central axis of the core body, and the logarithmic spiral line has a running angle of 15° - 45°.

[0022] Still further, the core body is provided with a liquid inlet channel, whose path is a logarithmic spiral line extending from the middle to the outside. The path of the stroke channel of the secondary flow channel is a logarithmic spiral line, and the path of the logarithmic spiral line of the stroke channel of the secondary flow channel is substantially the same as that of the logarithmic spiral line of the liquid inlet channel.

[0023] Further, the hydraulic power device further includes a shaft, and the outer ring and the core body are coaxially arranged on the shaft.

[0024] Still further, the hydraulic power device further includes a shaft, and the outer ring and the core body are coaxially arranged on the shaft. Liquid inlet and outlet channels are provided on the shaft and are respectively communicated with the liquid inlet channel and the liquid discharge channel of the core body.

[0025] Still further, the liquid inlet and outlet channels in the shaft form a liquid inlet and a liquid outlet, and the liquid inlet and outlet channels are of a non-connected structure.

[0026] Furthermore, the outer ring is cooperated with the shaft through the side plate to form a closed space, and the core body is arranged in the closed space and fixedly connected with the shaft.

[0027] Furthermore, in the independent working unit, the liquid inlet channel, the nozzle, the driving recess, the secondary impact channel, the discharge port and the liquid discharge channel constitute a water flow path.

[0028] Furthermore, the hydraulic power device includes more than two independent working units to form a multi-stage driving structure, which is arranged along the circumferential direction of the core body or the outer ring.

[0029] Further, there are more than two driving recesses arranged on the inner ring surface of the outer ring. Each driving recess has a contour bottom surface and a driving surface. The contour line of the contour bottom surface is a logarithmic spiral line, and its pole is set at the center of the core body.

[0030] Further, the hydraulic-driven generator set is installed downstream of the dam to utilize the water pressure difference to enable the water flow to enter from the liquid inlet channel.

[0031] Further, the hydraulic-driven generator set is installed in the sea area to utilize the tidal force to enable the water flow to enter from the liquid inlet channel.

[0032] Further, the outer ring of the hydraulic power device is drivingly connected to the rotor shaft of the power generation assembly through a transmission device. The rotational work of the outer ring drives the rotor shaft of the power generation assembly to rotate, thereby realizing power generation.

[0033] Further, the outer ring of the hydraulic power device is directly connected to the coil of the power generation assembly. The rotational work of the outer ring drives the coil to rotate, thereby realizing power generation.

[0034] Through the technical solution provided by the present invention, the following beneficial effects are achieved:

[0035] The hydraulic-driven generator set provided by this solution replaces the conventional water turbine with the hydraulic power device of this solution. The multi-stage flow channels arranged on the core body of the hydraulic power device, that is, the liquid inlet channel serves as the first-stage flow channel, and each secondary impact channel serves as the second, third, fourth... stage flow channels. The water flow acts on the driving recess of the outer ring from the first-stage flow channel. The driving recess is communicated with the second-stage flow channel, and then returns to the second-stage flow channel and then acts on another driving recess of the outer ring, and so on, until the water flow is discharged from the liquid discharge channel. The whole process proceeds in the forward direction along the rotation direction of the outer ring, with large torque, high transmission efficiency, high utilization rate of water flow pressure energy, and the output torque further increases with the increase of the rotational speed.

[0036] The flow channels arranged circumferentially on the core body effectively reduce the volume of the overall device, can be flexibly matched with power generation or output devices in various fields. At the same time, the more the inlet flow channels or channels are arranged circumferentially on the core body, the lower the overall weight is, and the output speed and efficiency of the device are further improved.

[0037] Directly utilize the high-speed water flow to enter the core and drive the outer ring to rotate. By converting the hydraulic pressure energy into kinetic energy, compared with existing generators or motors, it does not cause environmental air pollution and has the advantages of environmental protection and energy conservation.

[0038] The hydraulic drive generator set of this solution does not need to adopt the structure of a conventional water turbine. On the basis of the same water flow rate, it has high utilization rate, large torque, high rotational speed, and high transmission efficiency, and has the characteristics of small volume, simple structure, and high conversion efficiency. Brief Description of the Drawings

[0039] Figure 1 It is a schematic structural diagram of the hydraulic drive generator set in Embodiment 1.

[0040] Figure 2 It is a schematic diagram of the hydraulic power device in Embodiment 1.

[0041] Figure 3 It is a side view of the hydraulic power device in Embodiment 1 in the axial direction of shaft A.

[0042] Figure 4 It is a side view of the hydraulic power device in Embodiment 1 in the axial direction of shaft B.

[0043] Figure 5 It is a sectional view of the hydraulic power device in Embodiment 1.

[0044] Figure 6 It is another layout diagram of the hydraulic power device in Embodiment 1.

[0045] Figure 7 It is a schematic diagram of the drive connection of the hydraulic power device in Embodiment 1.

[0046] Figure 8 It is a schematic diagram of the hydraulic power device in Embodiment 2.

[0047] Figure 9 It is a side view of the hydraulic power device in Embodiment 2 in the axial direction of shaft C.

[0048] Figure 10 It is a side view of the hydraulic power device in Embodiment 2 in the axial direction of shaft D.

[0049] Figure 11 It is a radial sectional view of the hydraulic power device in Embodiment 2.

[0050] Figure 12 It is a schematic structural diagram of the hydraulic drive generator set in Embodiment 4. Detailed Implementation Modes

[0051] To further illustrate the embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments and can be combined with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0052] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0053] Embodiment 1

[0054] A hydraulic-driven generator set provided in this embodiment is arranged at a high-head water source, such as a reservoir power station. Referring to Figure 1 As shown, the hydraulic-driven generator set is arranged downstream of the dam. The hydraulic-driven generator set includes: a water inlet pipe 102, a hydraulic power device 10, and a power generation component 103. The water inlet pipe 102 connects the high-pressure water source of the dam 101 to the hydraulic power device 10, and the hydraulic power device 10 generates driving kinetic energy and drives and connects the power generation component 103 through a transmission mechanism 6.

[0055] Among them, the power generation component 103 has a conventional generator structure, including: a rotor shaft, coils arranged on the rotor shaft, and a stator winding. When the coils are energized, a magnetic field is generated. The rotation of the rotor shaft drives the coils to rotate, generating a rotating magnetic field. The coils of the stator winding cut the magnetic force lines to generate current and output it. Of course, in the existing generator structure, components such as carbon brushes, slip rings, and stator cores are usually also provided, and their specific connection structures are all existing structures and will not be elaborated here. According to different structures, the existing power generation components can be existing two-phase AC generators, DC generators, three-phase AC generators, etc.

[0056] Further, continuing to refer to Figures 2 to 5 As shown, the hydraulic power device includes an outer ring 1, and a plurality of driving recesses 11 are provided on the inner circumferential surface of its inner ring; a core body 3, which is coaxially arranged inside the outer ring 1 and can rotate relative to the outer ring. At least one spray port 301, at least one discharge port 302, and at least one primary flow channel 300 located between the spray port and the discharge port are provided on the outer circumferential surface of the core body 3;

[0057] At least one liquid inlet channel 31, which communicates with at least one spray port 301; and

[0058] At least one liquid discharge channel 310, which communicates with at least one discharge port 302;

[0059] The water flow enters from the liquid inlet channel 31, and is ejected step by step through the nozzle 301 of the core body 3 and the secondary flow channels 300, acting on at least two driving recesses 11 in the circumferential direction of the outer ring 1, generating a thrust on these driving recesses 11 to push the outer ring 1 to rotate and do work. The water flow is discharged through the discharge port of the core body 3 via the liquid discharge channel, realizing continuous power output. The hydraulic power device further includes a shaft 2, and the outer ring 1 and the core body 3 are coaxially arranged on the shaft 2.

[0060] As Figure 5 shown, the liquid inlet channel 31 and the liquid discharge channel 310 are formed in the core body 3. The nozzle 301 and the secondary flow channels 300 on the core body 3 are communicated with the corresponding driving recesses 11 of the outer ring 1. Among them, the secondary flow channels 300 and the corresponding driving recesses 11 are arranged in a staggered manner and communicated in sequence. The secondary flow channels 300 are arranged along the circumferential direction of the core body or the outer ring.

[0061] As Figure 5 , the core body 3 includes: a liquid inlet channel 31, which forms a nozzle 31 on the circumferential surface of the core body. Its trend is an arc line extending from the middle to the outside. The nozzle 301 is communicated with the corresponding driving recess 11 of the outer ring, forming the first-stage flow channel;

[0062] The secondary flow channels 300, whose trend is an arc line that bends and extends from the edge of the core body 3 inward and then to the edge. Each secondary flow channel 300 is communicated with the two adjacent driving recesses 11 corresponding to the outer ring 1, forming N-stage flow channels along the circumferential direction of the core body, where N is a natural number greater than or equal to 2. It should be noted that: if it is a 2-stage flow channel, it includes the first-stage flow channel (liquid inlet channel) and the second-stage flow channel (primary flow channel); if it is a 3-stage flow channel, it includes the first-stage flow channel (liquid inlet channel), the second-stage flow channel (primary flow channel), and the third-stage flow channel (another primary flow channel),...

[0063] Each stage of the flow channel and the corresponding driving recess of the outer ring cooperate to form a multi-stage stroke structure with a decreasing water flow pressure energy.

[0064] According to the requirements of the load, the hydraulic power device can be designed. The core body 3 can be provided with 2-stage flow channels, 3-stage flow channels, or more-stage liquid inlet flow channels. Each stage circulates to do work, and the energy is fully utilized, maximizing the use efficiency to meet the requirements of output torque and rotational speed.

[0065] As Figure 6 is a schematic diagram of a 4-stage flow channel. After the compressed water flow enters from the first-stage flow channel 311, it passes through the second, third, and fourth-stage flow channels 312, 313, and 314, and is ejected to act on the corresponding driving recess 11, and finally is output through the liquid discharge flow channel 310; Figure 5 is a schematic diagram of a 5-stage liquid inlet flow channel. The working process is similar to that of Figure 6 shown. As Figure 6 , the secondary flow channel 300 includes a return channel and a connected stroke channel. As Figure 6The return channel 3131 and the corresponding stroke channel 3132 in the third-order channel in [the device], the return channel 3131 communicates with the driving recess corresponding to the outer ring, and the stroke channel 3132 communicates with another driving recess.

[0066] Please refer to Figure 2 , the hydraulic power device further includes a shaft 2. The outer ring 1 and the core 3 are coaxially arranged on the shaft 2. The shaft 2 is provided with liquid inlet and outlet channels 21, 210 which communicate with the liquid inlet channel 31 and the liquid discharge channel 310 of the core 3 respectively. The liquid inlet and outlet channels in the shaft form an inlet and an outlet, and the liquid inlet and outlet channels are of a non-connected structure. The outer ring 1 is cooperated with the shaft 2 through side plates 41, 42 to form a closed space. The core 3 is arranged in the closed space and is fixedly connected to the shaft 2. In the present invention, the core 3 is provided with at least two-order channels, and each order of channel communicates with the driving recess corresponding to the outer ring, and finally the water flow is discharged through the liquid discharge channel or the channel.

[0067] Please refer to Figure 2 , in the present invention, the core 3 can be formed by the cooperation of a left core and a right core. The liquid inlet channel 31 and the liquid discharge channel 310 are arranged on the mating surface of the left and right cores. The core 3 can also be integrally cast.

[0068] Please refer to Figure 2 , Figure 5 , in this embodiment, it is a first-stage driving structure. One water flow channel is arranged circumferentially on the core 3 to form a first-stage driving structure. The water flow channel is also called an independent work unit. One liquid inlet channel 31, one nozzle 301, at least two driving recesses 11, at least one secondary impact channel 300, one discharge port 302 and one liquid discharge channel 310 on the core 3 and the outer ring 1 form an independent work unit. The hydraulic power device includes at least one independent work unit. The liquid inlet channel 31, the nozzle 301, the driving recess 11, the secondary impact channel 300, the discharge port 302 and the liquid discharge channel 310 in the independent work unit constitute the water flow path.

[0069] Please refer to Figure 2 , Figure 5 or Figure 6 , on the inner ring surface of the outer ring 1 in the present invention, there are more than 2 driving recesses 11. Each driving recess has a contour bottom surface 111 and a driving surface 112. The contour line of the contour bottom surface 111 can be a common arc line or a spiral line. When the contour line of the contour bottom surface is a logarithmic spiral line, its pole is set on the shaft. Each driving recess 11 communicates with the adjacent-order channel at the same time so that the water flow entering from the previous-order channel is output by the next-order channel.

[0070] In the present invention, the liquid inlet channel of the core 3, that is, the first-order channel, can be a common arc line or a spiral line, and the stroke channel in each secondary impact channel, that is, the N-order channel, can also be a common arc line or a spiral line.

[0071] Such as Figure 5and Figure 6 On the core 3 of the present invention, a liquid inlet channel 31 is provided, and its direction is a logarithmic spiral extending from the middle to the outside. The direction of the stroke channel of the secondary flushing channel 300 is a logarithmic spiral, and the direction of the logarithmic spiral of the stroke channel of the secondary flushing channel is substantially the same as that of the logarithmic spiral of the liquid inlet channel. The direction of the liquid inlet channel of the core 3 is a logarithmic spiral extending from the middle to the outside. The pole of the logarithmic spiral is set on the central axis of the core. The logarithmic spiral direction angle is 15° - 45°. The smaller the angle, the longer the flow channel and the more losses; the larger the angle, the smaller the tangential component force of the driving outer ring.

[0072] Please refer to Figure 2 , Figure 3 and Figure 4 In the present invention, the liquid inlet and outlet channels 21 and 210 in the shaft 2 form an inlet and an outlet, and the liquid inlet and outlet channels are of a non-connected structure. The inlet and outlet of the shaft can be provided at one end or both ends of the shaft. The liquid inlet channel 21 communicates with the liquid inlet channel 31 of the core. The liquid outlet of the shaft extends axially to form a liquid outlet channel 210, and the liquid outlet channel communicates with the liquid discharge channel 310 of the core.

[0073] The rotational work of the outer ring 1 serves as the kinetic energy for the power generation component 103 to generate electricity. In this specific embodiment, the outer ring 1 is drivingly connected to the rotor shaft of the power generation component 103 through a transmission device. The rotational work of the outer ring drives the rotor shaft of the power generation component 103 to rotate to achieve power generation. Further, referring to Figure 2 As shown, in this embodiment, a plurality of assembly holes 1011 are formed on the circumferential side of the outer ring 1. Referring to Figure 7 again, the transmission mechanism 6 is a rotating shaft 60. A bolt 61 passes through the assembly hole and is fixedly screwed to a rotating shaft 60, and this rotating shaft 60 is connected to the rotor shaft of the power generation component 103, realizing the driving connection between the outer ring 1 and the rotor shaft of the power generation component 103. Of course, in other embodiments, the driving connection between the outer ring 1 and the rotor shaft of the power generation component 103 can also be realized through other transmission devices, such as a gear transmission mechanism, that is, external teeth are provided on the outer ring to facilitate the output of kinetic energy through the gear transmission method; for another example, the outer ring has a pulley groove to output kinetic energy through the belt transmission method; for another example, the outer ring has a mounting flange to conveniently install a coupling to output kinetic energy; and so on.

[0074] Further, a flow valve (not shown) is connected in series in the water inlet pipe 102. By controlling the flow valve to adjust the water flow rate, the water flow pressure introduced into the hydraulic power device 10 can be better controlled.

[0075] The hydraulic power device involved in this application refers to a device that can convert hydraulic energy into mechanical rotation. In addition to the necessary outer ring, core body, and their corresponding concave or flow channel structures, the device can also include other components; for example, it can additionally include a housing and a sealing structure for providing external protection, or it can additionally include a coupling for providing torque transmission. The core body and the outer ring are made of hard materials, not limited to metals, metal alloys, plastics, and composite materials. The processing methods of the concave or flow channel structures of the core body and the outer ring can be achieved by all known production means, including but not limited to die casting, forging, extrusion, 3D printing, etc.

[0076] Figure 2 and Figure 5 It should be noted that although the liquid inlet channels 31 and the liquid discharge channels 310 of the core body, as well as the liquid inlet shaft channels 21 and the liquid discharge shaft channels 210, do not correspond according to the drawing rules, for the purpose of vivid illustration, Figure 2 the liquid inlet channels and the liquid discharge channels of the core body in refer to the liquid inlet channels and the liquid discharge channels. In the second embodiment, Figure 8 and Figure 11 Similar schematic diagrams.

[0077] Second Embodiment

[0078] The hydraulic-driven generator set of this embodiment includes a hydraulic power device and a power generation component. Compared with the first embodiment, the improvement lies in the hydraulic power device. For details, please refer to Figures 8 to 11 . In the hydraulic power device, there are 2 independent working units forming a two-stage drive structure, that is, 2 water flow channels are arranged circumferentially on the core body 3. Each water flow channel includes a liquid inlet channel 31 with more than 1 stage and a secondary impact flow channel 300 and is arranged circumferentially along the core body 3 and a liquid discharge flow channel. The hydraulic power device includes an outer ring 1, on the inner circumferential surface of which there are a plurality of driving concave portions 11 arranged circumferentially; a core body 3, which is coaxially arranged inside the outer ring 1 and can rotate relative to the outer ring. There are 2 groups of spray ports, discharge ports, and at least one secondary impact flow channel is arranged between each group of spray ports and discharge ports on the outer circumferential surface of the core body; there are 2 liquid inlet channels 31 and 32 on the core body, which are correspondingly connected to the spray ports; and 2 liquid discharge channels 310 and 320, which are correspondingly connected to the discharge ports; two water flows enter from the 2 liquid inlet channels of the core body respectively, and are ejected step by step through the spray ports and the secondary impact flow channels 300 of the core body 3, acting on the corresponding driving concave portions 11 on the circumference of the outer ring, generating a thrust on these driving concave portions to push the outer ring 1 to rotate and do work, realizing power output. Finally, the water flow is discharged through the discharge ports of the core body and through the liquid discharge channels. The above-mentioned one liquid inlet channel, one spray port, the corresponding number of driving concave portions, and the corresponding secondary impact flow channels, discharge ports, and one liquid discharge channel form an independent working unit.

[0079] The hydraulic power device further includes a shaft 2. The outer ring 1 and the core 3 are coaxially arranged on the shaft. The shaft 2 is provided with liquid inlet channels 21, 22 and liquid outlet channels 210, 220 which are respectively communicated with the liquid inlet channels 31, 32 and the liquid discharge channels 310, 320 of the core. Two liquid inlets and two liquid outlets corresponding to the water flow channels are provided on the shaft 2. High-speed water flow with a certain pressure enters from the two liquid inlets of the shaft 2, sprays out through the liquid inlet channels of the core 3 and acts on the driving recess 11 of the outer ring 1, generating a thrust to drive the outer ring 1 to rotate and do work. Finally, the water flow returns to the corresponding liquid outlets through the liquid discharge channels of the core 3, realizing continuous output of power.

[0080] Embodiment III

[0081] The hydraulic-driven generator set of this embodiment includes a hydraulic power device and a power generation component. Compared with Embodiment I, the improvement lies in the hydraulic power device. In the hydraulic power device of this embodiment, 4 or more independent working units are included to form a multi-stage driving structure. 3 or more water flow channels are arranged circumferentially on the core. Each water flow channel includes a liquid inlet channel with more than 1 stage and a secondary impact channel and is arranged circumferentially along the core and a liquid discharge channel. The liquid inlet channel and the liquid discharge channel are arranged on the mating surfaces of the left and right cores. The shaft is provided with the same number of liquid inlet channels and liquid outlet channels as the water flow channels. The water flow enters from the liquid inlet channels of the shaft, sprays out through the liquid inlet channels of the core and acts on the driving recess of the outer ring, driving the outer ring to rotate and do work, realizing continuous output of power. Finally, the compressed water flow returns to the corresponding liquid outlet channels through the liquid discharge channels of the core and can be used as a hydraulic motor or a hydraulic power generation component or a continuously variable transmission.

[0082] Embodiment IV

[0083] For the hydraulic-driven generator set provided in this embodiment, the water source is seawater with tidal potential energy, that is, it is arranged in a tidal power station. Referring to Figure 12 as shown, the hydraulic power device 10 is arranged in seawater, and its liquid inlet channel corresponds to the tidal direction. The power generation component 103 is arranged on the floating board 104. The tide drives the seawater to enter from the liquid inlet channel of the hydraulic power device 10. The tidal force of the seawater drives the outer ring of the hydraulic power device 10 to rotate. The rotation of the outer ring drives the power generation component 103 through the transmission mechanism 6, thereby driving the power generation component 103 to generate electricity.

[0084] Embodiment V

[0085] The wind-driven generator set provided in this embodiment has the same structure as Embodiment I. The difference is that in this embodiment, the outer ring of the hydraulic power device replaces the rotor shaft of the power generation component and is directly connected to the coil of the power generation component. The rotation and work of the outer ring drive the coil to rotate, realizing power generation.

[0086] In this way, the hydraulic power unit can be directly assembled on the power generation component without the need for an additional transmission device for power transmission, making the structure simpler and the volume smaller.

[0087] Through the technical solution provided by the above embodiments, the multi-stage flow channels provided in the core body of the hydraulic power unit, that is, the liquid inlet channel serves as the first-stage flow channel, and each impact flow channel serves as the second, third, fourth... stage flow channels. The water flow acts on the driving recesses on the outer ring from the first-stage flow channel. The driving recesses communicate with the second-stage flow channel, and then return to the second-stage flow channel and act on another driving recess on the outer ring, and so on, until the water flow is discharged from the liquid discharge channel. The whole process proceeds in the forward direction along the rotation direction of the outer ring, with large torque, high transmission efficiency, and high utilization rate of the water flow pressure energy. The output torque further increases with the increase in rotational speed.

[0088] The flow channels arranged circumferentially on the core body effectively reduce the volume of the overall device and can be flexibly matched with power generation or output devices in various fields. At the same time, the more the inlet flow channels or channels are arranged circumferentially on the core body, the lower the overall weight, further improving the output speed and efficiency of the device.

[0089] Directly utilize the high-speed water flow to enter the core body and drive the outer ring to rotate. By converting the water flow pressure energy into kinetic energy, compared with the existing power generation components or motors, it does not cause environmental air pollution and has the advantages of environmental protection and energy conservation.

[0090] The hydraulic drive generator set of this solution does not need to adopt the structure of a conventional water turbine. On the basis of the same water flow rate, it has high utilization rate, large torque, high rotational speed, high transmission efficiency, and the characteristics of small volume, simple structure, and high conversion efficiency.

[0091] Although the present invention is specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all are within the protection scope of the present invention.

Claims

1. A hydraulic-driven generator set, comprising a hydraulic power device and a power generation component, characterized in that: The hydraulic power device includes: An outer ring, on the inner circumferential surface of which there are provided a plurality of driving recesses in the circumferential direction; each driving recess has a contour bottom surface and a driving surface, the contour line of the contour bottom surface is a logarithmic spiral, and its pole is set at the center of the core; A core, which is coaxially arranged inside the outer ring and can rotate relative to the outer ring. At least one nozzle, at least one drain port, and at least one secondary flow channel located between the nozzle and the drain port are provided on the outer circumferential surface of the core; At least one liquid inlet channel, which communicates with at least one nozzle; its trend is an arc line extending from the middle to the outside, and the nozzle communicates with the corresponding driving recess of the outer ring to form a first-stage flow channel; and At least one liquid discharge channel, which communicates with at least one drain port; The liquid inlet channel and the liquid discharge channel are formed in the core. The nozzles and the secondary flow channels on the core communicate with the corresponding driving recesses of the outer ring, and the secondary flow channels are arranged along the circumferential direction of the core or the outer ring; the trend of the liquid inlet channel of the core is a logarithmic spiral extending from the middle to the outside, the pole of this logarithmic spiral is set on the central axis of the core, and the trend angle of the logarithmic spiral is 15° - 45°; The secondary flow channel, its trend is an arc line that bends and extends from the edge of the core inward and then to the edge. Each secondary flow channel communicates with the two adjacent driving recesses corresponding to the outer ring, and an N-stage flow channel is formed along the circumferential direction of the core, where N is a natural number greater than or equal to 2; each stage of the flow channel cooperates with the corresponding driving recess of the outer ring to form a multi-stage stroke structure with decreasing hydraulic energy; Water flows in from the liquid inlet channel, is ejected step by step through the nozzles and the secondary flow channels of the core, acts on at least two driving recesses on the circumferential direction of the outer ring, generates a thrust on these driving recesses to push the outer ring to rotate and do work, realizes power output. Finally, the water is discharged through the drain port of the core and through the liquid discharge channel; The rotational work of the outer ring is used as the kinetic energy for the power generation component to generate electricity.

2. The hydraulic-driven generator set according to claim 1, characterized in that: At least one liquid inlet channel, at least one nozzle, at least two driving recesses, at least one secondary flow channel, at least one drain port and at least one liquid discharge channel form an independent working unit, and the hydraulic power device includes at least one independent working unit.

3. The hydraulic-driven generator set according to claim 1, characterized in that: The hydraulic power device further includes a shaft. The outer ring and the core are coaxially arranged on the shaft, and liquid inlet and outlet shaft channels are provided on the shaft and communicate with the liquid inlet channel and the liquid discharge channel of the core respectively.

4. The hydraulic-driven generator set according to claim 2, characterized in that: The hydraulic power device includes more than two independent working units to form a multi-stage driving structure, and is arranged along the circumferential direction of the core or the outer ring.

5. The hydraulic-driven generator set according to any one of claims 1 to 4, characterized in that: The outer ring of the hydraulic power device is drivingly connected to the rotor shaft of the power generation component through a transmission device, and the rotational work of the outer ring drives the rotor shaft of the power generation component to rotate to realize power generation.

6. The hydraulic-driven generator set according to any one of claims 1 to 4, characterized in that: The outer ring of the hydraulic power device is directly connected to the coil of the power generation component, and the rotational work of the outer ring drives the coil to rotate to realize power generation.

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