1. The oil pressure power generation system is characterized by comprising an oil pressure pump, an oil pressure generator, a speed regulating valve and an energy storage oil tank which are sequentially connected through an oil pipeline, and further comprising a power source which is in transmission connection with the oil pressure pump to drive the oil pressure pump to operate.

2. The oil pressure power generation system of claim 1, wherein the power source is an energy saving motor, and the energy saving motor is in transmission connection with the oil pressure pump through a belt pulley and a transmission belt.

3. The oil pressure electric power generation system according to claim 1, wherein a pressure valve is provided in a pipe connecting the oil pressure pump and the oil pressure generator, and a filter and a check valve are provided in a pipe connecting the energy storage tank and the oil pressure pump; and the energy storage oil tank is also provided with an exhaust port.

4. The oil pressure power generation system of claim 1, wherein the oil line is a flexible oil line.

5. The oil pressure electric power generation system according to claim 1, wherein the oil pressure pump includes a cylinder block, a transmission shaft, a swash plate, a plunger, a spring rod, a blocking ball; one end of the transmission shaft penetrates through the cylinder body and is connected with the swash plate, and the other end of the transmission shaft is connected with the power source; the plunger is installed on the swash plate, an oil discharge channel is formed in the plunger, a low-pressure oil suction port and a high-pressure oil outlet channel are formed in the side wall of the cylinder body, the spring rod is installed in the high-pressure oil outlet channel and the oil discharge channel respectively, and the blocking ball is installed on the spring rod.

6. The oil pressure electric power generation system according to claim 1, wherein the oil pressure electric power generator includes an oil pressure motor unit and an electric power generator unit which are integrally designed, and the oil pressure motor unit and the electric power generator unit are coaxially provided by a rotor shaft; the oil pressure motor unit is arranged on the inner side of the generator unit and is connected with the oil pressure pump and the speed regulating valve through pipelines; the generator unit is connected to a load.

7. The oil pressure electric power generation system of claim 6, wherein said oil pressure motor unit includes an oil inlet, a rotor, an oil outlet, a pressure plate, a vane, said pressure plate being disposed outside said rotor, said vane being mounted on said rotor; the rotor tip extending into the generator unit; the oil inlet and the oil outlet are oppositely arranged and are respectively positioned on two sides of the rotor, the oil inlet is connected with an oil pipeline on the outlet side of the oil hydraulic pump, and the oil outlet is connected with an oil pipeline on the inlet side of the speed regulating valve.

8. The oil pressure electric power generation system of claim 7, wherein the number of the vanes is at least two.

9. The oil pressure electric power generation system according to claim 7, wherein the generator unit includes a stator that is provided around the rotor, a permanent magnet that is provided in the stator, and a coil winding that is wound around the permanent magnet and that is connected to a load.

10. The oil pressure power generation system of claim 9, wherein the permanent magnet is made of a string iron boron strong magnetic material.

Background

In some electric devices, the power generation efficiency and stability of the generator are particularly important, especially when the electric device has high requirements on electric parameters. The existing mobile power generation equipment generally has the defects of high and low power generation power, poor stability, complex installation and connection and the like, and the mobile fuel generator can meet higher power generation requirements only by a set of strict power generation control system, so that the application range is small.

Therefore, it is necessary to research a novel power generation device having the characteristics of multiple application scenes, energy saving and high efficiency.

Disclosure of Invention

The invention aims to provide an adjustable high-efficiency oil pressure power generation system, which aims to solve the technical problems of poor stability and small application range of power generation equipment in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides an oil pressure power generation system which comprises an oil pressure pump, an oil pressure generator, a speed regulating valve and an energy storage oil tank which are sequentially connected through an oil pipeline, and further comprises a power source which is in transmission connection with the oil pressure pump to drive the oil pressure pump to operate.

As a further improvement of the invention, the power source is an energy-saving motor, and the energy-saving motor is in transmission connection with the oil pressure pump through a belt pulley and a transmission belt.

As a further improvement of the invention, a pressure valve is arranged on a pipeline connecting the oil pressure pump and the oil pressure generator, and a filter and a one-way valve are arranged on a pipeline connecting the energy storage oil tank and the oil pressure pump; and the energy storage oil tank is also provided with an exhaust port.

As a further improvement of the present invention, the oil pipeline is a flexible oil pipe.

As a further improvement of the invention, the oil hydraulic pump comprises a cylinder body, a transmission shaft, a swash plate, a plunger, a spring rod and a blocking ball; one end of the transmission shaft penetrates through the cylinder body and is connected with the swash plate, and the other end of the transmission shaft is connected with the power source; the plunger is installed on the swash plate, an oil discharge channel is formed in the plunger, a low-pressure oil suction port and a high-pressure oil outlet channel are formed in the side wall of the cylinder body, the spring rod is installed in the high-pressure oil outlet channel and the oil discharge channel respectively, and the blocking ball is installed on the spring rod.

As a further improvement of the invention, the oil pressure generator comprises an oil pressure motor unit and a generator unit which are integrally designed, and the oil pressure motor unit and the generator unit are coaxially arranged through a rotor shaft; the oil pressure motor unit is arranged on the inner side of the generator unit and is connected with the oil pressure pump and the speed regulating valve through pipelines; the generator unit is connected to a load.

As a further improvement of the present invention, the oil pressure motor unit includes an oil inlet, a rotor, an oil outlet, a pressure plate, and a vane, the pressure plate is disposed outside the rotor, and the vane is mounted on the rotor; the rotor tip extending into the generator unit; the oil inlet and the oil outlet are oppositely arranged and are respectively positioned on two sides of the rotor, the oil inlet is connected with an oil pipeline on the outlet side of the oil hydraulic pump, and the oil outlet is connected with an oil pipeline on the inlet side of the speed regulating valve.

As a further development of the invention, the number of blades is at least two.

As a further improvement of the present invention, the generator unit includes a stator, a permanent magnet, and a coil winding, the stator is disposed around the rotor, the permanent magnet is disposed in the stator, the coil winding is wound around the permanent magnet, and the coil winding is connected to a load.

As a further improvement, the permanent magnet is made of a string iron boron strong magnetic material.

Compared with the prior art, the invention has the following beneficial effects:

according to the oil pressure power generation system provided by the invention, the energy storage oil tank is arranged on the outlet side of the oil pressure generator, so that overload damage to a power source due to the increase of instantaneous load can be avoided when power generation is started, the operation is stable, the energy conversion efficiency is high, energy can be stored in the air pressure energy storage oil tank when no power load exists, energy waste can be avoided, a large amount of cost is saved, and the air pressure energy storage oil tank can also be used as an auxiliary power source to reduce the installed capacity; compensating for leakage; compensating for thermal expansion; as an emergency power source; forming a constant pressure oil source;

according to the oil pressure power generation system provided by the invention, the oil pressure pump is connected with an external power source through a belt, and an oil pressure generator capable of converting internal oil pressure energy is stable in output power compared with a gearbox gear conversion generator; the output power parameter of the oil pressure generator is adjusted by adjusting the oil pressure output power through the speed adjusting valve, so that the operation is convenient and effective; because the output parameters can be conveniently adjusted, the same set of device can be used in a plurality of scenes, and the device has wide application range and strong universality; of course, the speed regulating valve can be designed manually or automatically, and the oil pressure motor can achieve the purpose of speed regulation by changing the input flow or the motor displacement;

according to the oil pressure power generation system provided by the invention, the air pressure energy storage oil tank is arranged near the impact point, and the air pressure energy storage oil tank is arranged before the impact sources such as a control valve or a hydraulic cylinder and the like, so that the oil pressure power generation system has good axial, angular and radial compensation capabilities, obvious buffering performance and damping performance, high transmission efficiency, low working noise and maintenance-free advantage;

according to the oil pressure power generation system provided by the invention, the units are connected by the flexible oil pipes, so that the oil pressure power generation system is simpler and more convenient to install in the practical engineering implementation process;

according to the oil pressure power generation system provided by the invention, the flow speed of hydraulic oil is changed by arranging the speed regulating valve and adjusting the opening and closing size of the speed regulating valve; the change of the hydraulic flow rate simultaneously changes the movement speed of the blade of the hydraulic motor, namely, the rotating speed of the rotor of the hydraulic motor is changed, and the rotating speed of the rotor of the generator is also changed due to the fact that the hydraulic motor unit and the hydraulic power generation unit are of a coaxial or connected structure;

according to the oil pressure power generation system, the oil pressure power generation motor is integrally designed, heat generated by the oil pressure power generation unit can be taken out by the hydraulic oil through the oil discharge port, the heat is dissipated in the circulation process of the system, and a heat dissipation device does not need to be designed for the oil pressure power generator independently.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic block diagram of the components of an oil pressure power generation system of the present invention;

FIG. 2 is a schematic view showing the construction of an oil pressure pump in the oil pressure electric power generating system according to the present invention;

FIG. 3 is a schematic structural view of an oil pressure motor unit in the oil pressure power generation machine in the oil pressure power generation system of the invention;

FIG. 4 is a schematic diagram of a generator unit of the hydraulic generator in the hydraulic power generation system according to the present invention.

FIG. 1 shows a hydraulic pump; 11. a cylinder body; 111. an oil discharge passage; 112. a low pressure oil inlet; 113. a high pressure oil outlet; 12. a drive shaft; 13. a swash plate; 14. a plunger; 15. a spring lever; 16. plugging the ball; 19. a high-pressure oil way connecting pipe; 20. a low-pressure oil way connecting pipe; 2. an oil pressure generator; 21. a hydraulic motor unit; 211. an oil inlet; 212. a rotor; 213. an oil outlet; 214. a pressure plate; 215. a blade; 22. a generator unit; 221. a stator; 222. a permanent magnet; 223. a coil winding; 3. a speed regulating valve; 4. an energy storage oil tank; 41. an exhaust port; 42. an oil inlet of the energy storage oil tank; 43. an oil outlet of the energy storage oil tank; 5. a power source; 51. a belt pulley; 52. a drive belt; 6. a pressure valve; 7. a filter; 8. a one-way valve; 9. and (4) loading.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The invention provides an oil pressure power generation system which comprises an oil pressure pump 1, an oil pressure generator 2, a speed regulating valve 3 and an energy storage oil tank 4 which are sequentially connected through an oil pipeline, and further comprises a power source 5 which is in transmission connection with the oil pressure pump 1 to drive the oil pressure pump 1 to operate.

Specifically, power supply 5 drives oil pressure pump 1 and operates, and oil pressure pump 1 operates and carries hydraulic oil pressure boost back and carry in the hydraulic generator 2 and utilize the kinetic energy of hydraulic oil to drive motor operation in the hydraulic generator 2 to make the generator generate electricity, through set up energy storage oil tank 4 on the pipeline that flows back to oil pressure pump 1 at oil pressure generator 2 outlet side, the overload that can gentle power generation system's instantaneous load increase caused the power supply harms, guarantees power generation system's steady output.

According to the oil pressure power generation system provided by the invention, the energy storage oil tank is arranged on the outlet side of the oil pressure generator, so that overload damage to a power source due to the increase of instantaneous load can be avoided when power generation is started, the energy conversion efficiency is high due to stable operation, energy can be stored in the air pressure energy storage oil tank when no power load exists, energy waste can be avoided, a large amount of cost is saved, the air pressure energy storage oil tank can also be used as an auxiliary power source, the installed capacity is reduced, the leakage is compensated, the thermal expansion compensation is carried out, an emergency power source is carried out, and a constant pressure oil source is formed. The output power parameter of the oil pressure generator is adjusted by adjusting the oil pressure output power through the speed adjusting valve, so that the operation is convenient and effective; because the output parameters can be conveniently adjusted, the same set of device can be used in a plurality of scenes, and the device has wide application range and strong universality; of course, the speed regulating valve can be designed manually or automatically, and the speed regulating purpose can be achieved by changing the input flow or the motor displacement of the oil pressure motor. According to the oil pressure power generation system provided by the invention, the air pressure energy storage oil tank is arranged near the impact point, and the air pressure energy storage oil tank has good axial, angular and radial compensation capabilities before being arranged on an impact source such as a control valve or a hydraulic cylinder, has obvious buffering performance and damping performance, is high in transmission efficiency, is low in working noise, and has the advantage of being free of maintenance.

As an alternative embodiment of the present invention, the power source 5 is an energy-saving motor, and the energy-saving motor is in transmission connection with the oil hydraulic pump 1 through a belt pulley 51 and a transmission belt 52. The oil pressure pump 1 is connected with an external power source 5 through a belt, and an oil pressure generator capable of converting internal oil pressure energy is stable in output power compared with a gearbox gear conversion generator.

Furthermore, a pressure valve 6 is arranged on a pipeline connecting the oil pressure pump 1 and the oil pressure generator 2, and a filter 7 and a one-way valve 8 are arranged on a pipeline connecting the energy storage oil tank 4 and the oil pressure pump 1; the energy storage oil tank 4 is also provided with an exhaust port 41.

Specifically, the oil pipe used in the present invention is a flexible oil pipe. According to the oil pressure power generation system provided by the invention, the units are connected by the flexible oil pipes, so that the oil pressure power generation system is simpler and more convenient and easier to install in the practical engineering implementation process.

As an optional embodiment of the present invention, the hydraulic pump 1 includes a cylinder 11, a transmission shaft 12, a swash plate 13, a plunger 14, a spring rod 15, and a blocking ball 16; one end of a transmission shaft 12 is arranged in the cylinder body 11 in a penetrating way and is connected with a swash plate 13, and the other end of the transmission shaft is connected with the power source 5; the plunger 14 is installed on the swash plate 13, an oil discharge channel is opened inside the plunger 14, a low pressure oil suction port and a high pressure oil discharge channel are opened on the side wall of the cylinder block 11, the spring rod 15 is installed in the high pressure oil discharge channel and the oil discharge channel, respectively, and the blocking ball 16 is installed on the spring rod 15.

As an alternative embodiment of the present invention, the hydraulic generator 2 includes an oil hydraulic motor unit 21 and a generator unit 22 which are integrally designed, and the oil hydraulic motor unit 21 and the generator unit 22 are coaxially arranged by a rotor shaft; the hydraulic motor unit 21 is arranged inside the generator unit 22, and the hydraulic motor unit 21 is connected with the hydraulic pump 1 and the speed regulating valve 3 through pipelines; the generator unit 22 is connected to the load 9.

As an alternative embodiment of the present invention, the oil pressure motor unit 21 includes an oil inlet 211, a rotor 212, an oil outlet 213, a pressure plate 214, and a vane 215, the pressure plate 214 is disposed outside the rotor 212, and the vane 215 is mounted on the rotor 212; the rotor 212 ends extending into the generator unit 22; the oil inlet 211 and the oil outlet 213 are oppositely arranged and respectively located at two sides of the rotor 212, the oil inlet 211 is connected with an oil pipeline at the outlet side of the oil hydraulic pump 1, and the oil outlet 213 is connected with an oil pipeline at the inlet side of the speed regulating valve 3.

Specifically, in the present invention, the number of the blades 215 is at least two.

As an alternative embodiment of the present invention, the generator unit 22 includes a stator 221, a permanent magnet 222, and a coil winding 223, the stator 221 is disposed around the rotor 212, the permanent magnet 222 is disposed in the stator 221, the coil winding 223 is wound around the permanent magnet 222, and the coil winding 223 is connected to the load 9.

In the present invention, the permanent magnet 222 is made of a string-type iron-boron ferromagnetic material.

According to the oil pressure power generation system provided by the invention, the flow speed of hydraulic oil is changed by arranging the speed regulating valve and adjusting the opening and closing size of the speed regulating valve; the change of the hydraulic flow rate simultaneously changes the movement speed of the blade of the hydraulic motor, namely, the rotating speed of the rotor of the hydraulic motor is changed, and the rotating speed of the rotor of the generator is also changed due to the fact that the hydraulic motor unit and the hydraulic power generation unit are of a coaxial or connected structure;

according to the oil pressure power generation system, the oil pressure power generation motor is integrally designed, heat generated by the oil pressure power generation unit can be taken out by the hydraulic oil through the oil discharge port, the heat is dissipated in the circulation process of the system, and a heat dissipation device does not need to be designed for the oil pressure power generator independently.

Example 1:

FIG. 1 is a block diagram of an adjustable high-pressure hydraulic power generation system according to the present invention; the adjustable high-pressure oil pressure power generation system comprises: the hydraulic control system comprises a power source 5, a transmission belt 52, a belt pulley 51, a hydraulic pump 1, a low-pressure oil inlet 112 of the hydraulic pump, a high-pressure oil outlet 113 of the hydraulic pump, a high-pressure oil way connecting pipe 19, a low-pressure oil way connecting pipe 20, a pressure valve 6, a hydraulic generator 2, an oil inlet 211, an oil outlet 213, a hydraulic motor unit 21, a generator unit 22, a stator 221, a rotor 212, a coil winding 223, a load 9, a speed regulating valve 3, an energy storage oil tank 4, an oil inlet 42 of the energy storage oil tank, an oil outlet 43 of the energy storage oil tank, an exhaust port 41, a filter 7 and a one-way valve 8. The power source 5 is connected with a belt pulley 51 through a transmission belt 52, the belt pulley 51 is connected with the oil hydraulic pump 1, a high-pressure oil outlet 113 of the oil hydraulic pump is connected with an oil inlet 211 through a high-pressure oil path connecting pipe 19, a pressure valve 6 is arranged in the high-pressure oil path connecting pipe 19, an oil outlet 213 is connected with an oil inlet 42 of the energy storage oil tank through a low-pressure oil path connecting pipe 20, a speed regulating valve 3 is arranged in the low-pressure oil path connecting pipe 20 between the oil outlet 213 of the oil hydraulic generator and the energy storage oil tank 4, an oil outlet 43 of the energy storage oil tank is connected with a low-pressure oil inlet 112 of the oil hydraulic pump through the low-pressure oil path connecting pipe 20, and a filter 7 and a one-way valve 8 are sequentially arranged on a connecting pipe.

The working principle of the adjustable high-pressure oil pressure power generation system is as follows: the power source 5 transmits kinetic energy to the oil pressure pump 1 through the transmission belt 52 and the belt pulley 51, hydraulic oil from the energy storage oil tank 4 is input through the low-pressure oil inlet 112 of the oil pressure pump, the high-pressure hydraulic oil generated by the oil pressure pump 1 is output through the high-pressure oil outlet 113 of the oil pressure pump, the output high-pressure hydraulic oil is input to the oil inlet 211 of the oil pressure motor unit 21 of the oil pressure generator 2 through the high-pressure oil passage connecting pipe 19 and the pressure valve 6, wherein the pressure valve 6 plays a role in oil pressure overload backflow. The high-pressure hydraulic oil is transmitted to the pressure generator unit 22 through the oil pressure motor unit 21 to enable the generator unit 22 to start generating electricity to provide electric energy for the load 9, the hydraulic oil generated by the generator unit 22 is driven to be output through the oil outlet 213, the output hydraulic oil flows back to the energy storage oil tank 4 through the speed regulating valve 3 and the oil inlet 42 of the energy storage oil tank through the low-pressure oil way connecting pipe 20, and the speed regulating valve 3 has stable pressure output to drive and regulate the normal operation and power generation of the oil-quantity generator.

FIG. 2 is a schematic view of the structure of an oil pressure pump in the high pressure oil pressure electric power generating system according to the present invention;

the oil hydraulic pump 1 shown in fig. 2 includes: the oil-hydraulic pump comprises a transmission shaft 12, a cylinder block 11, a spring rod 15, a blocking ball 16, a plunger 14, a swash plate 13, an oil discharge channel 111, a low-pressure oil inlet 112 of the oil-hydraulic pump and a high-pressure oil outlet 113 of the oil-hydraulic pump. A transmission shaft 12 is arranged in a cylinder body 11, the transmission shaft 12 is connected with a belt pulley 51, the belt pulley 51 is connected with an external power source 5 through a transmission belt 52, a swash plate 13 is installed on the transmission shaft 12, a plunger 14 is installed on the swash plate 13, an oil discharge channel 111 is formed in the plunger 14, a low-pressure oil inlet 1125 and a high-pressure oil outlet 113 are arranged on the side wall of the cylinder body 11, spring rods 15 are respectively installed in the high-pressure oil outlet 113 and the oil discharge channel 111, and blocking balls 16 are installed on the spring rods 15.

The oil hydraulic pump shown in fig. 2 is a conventional oil hydraulic pump, which operates on the principle: converting mechanical energy of a power source 5 (such as an electric motor, an internal combustion engine, and the like) into pressure energy of liquid, and driving the belt pulley 51 to rotate by a transmission belt 52; when the pulley 51 pushes the plunger 14 to reciprocate, the sealed volume formed by the plunger 14 and the cylinder block 11 is reduced, and hydraulic oil is squeezed out of the sealed volume and discharged to the oil inlet 211 of the oil pressure generator 2 through the pressure valve 6. When the pulley 51 rotates to the descending part of the curve, the spring rod 15 forces the plunger 14 to the right to form a certain vacuum degree, the pulley 51 enables the plunger 14 to continuously extend and contract, the sealing volume is periodically reduced and increased, and the oil pump 1 continuously sucks oil and discharges oil.

The oil pressure pump is connected with an external power source through a belt, and the oil pressure internal energy conversion power generation device outputs stable electric power compared with the gear conversion power generation of the gearbox; the output power parameter of the oil pressure generator is adjusted by adjusting the oil pressure output power through the speed adjusting valve, so that the method is very convenient and effective; because the output parameters can be conveniently adjusted, the same set of device can be used in a plurality of scenes, and the device has wide application range and strong universality. Of course, the speed valve can be designed manually or automatically. The oil pressure motor can achieve the purpose of speed regulation by changing the input flow or the motor displacement. The oil pressure pump plays a soft-play supercharging role in the process of the high-pressure oil pressure power generation device, and the technical effects of stable performance, convenient use, high efficiency and energy conservation of the generator in the normal power generation process are achieved.

FIG. 3 is a schematic diagram showing the structure of a hydraulic motor unit in a hydraulic generator in the high-pressure hydraulic power generation system according to the present invention; the oil pressure generator 2 is composed of an oil pressure motor unit 21 and a generator unit 22, and the oil pressure motor unit 21 and the generator unit 22 are coaxially arranged through a rotor 212; the hydraulic motor unit 21 is disposed inside the generator unit 22.

Specifically, the hydraulic motor unit 21 includes: the oil pressure generator comprises an oil inlet 211 of the oil pressure generator, a rotor 212, an oil outlet 213 of the oil pressure generator, a pressure plate 214 and blades 215. The pressure plate 214 is arranged on the outer side of the rotor 212, the blades 215 are mounted on the rotor 212, the number of the blades 215 is N, N is greater than 2, and the working principle of the oil pressure motor unit is as follows: high-pressure oil pressure enters the oil pressure motor unit 21 through the oil inlet 211, and the high-pressure oil pressure rotates the vanes 215 to generate kinetic energy so as to operate a generator unit 224 coaxial with the oil pressure motor unit 21 to generate electricity.

Fig. 4 is a schematic diagram showing a structure of a generator unit in the hydraulic generator in the hydraulic power generation system according to the present invention. The generator unit 22 includes: stator 221, rotor 212, coil winding 223, and permanent magnet 222. A permanent magnet 222 is arranged inside the stator 221, and the permanent magnet 222 is made of a string iron boron strong magnet; the permanent magnet 222 is wound with a coil winding 223, and the coil winding 223 is connected to the load 9.

The working principle is as follows: since the generator unit 22 is coaxially connected to the hydraulic motor unit 21, the generator is rotated by the rotation of the hydraulic motor unit 21 to generate electric power.

The hydraulic oil in the energy storage oil tank 4 passes through the oil outlet 43 of the energy storage oil tank and is provided for the low-pressure oil inlet 112 of the oil hydraulic pump through the low-pressure oil way connecting pipe 20 and the filter 7 and the check valve 8 which are sequentially arranged on the low-pressure oil way connecting pipe 20, wherein the filter 7 has the function of oil passing cleaning and oil passing, and is used for guaranteeing the normal operation of equipment, the check valve 8 can prevent the backflow situation from occurring, the pump and the motor are prevented from reversing, the oil pressure process of secondary circulation is completed, and electric energy is continuously generated.

It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in fig. 1 to facilitate the description of the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.