Wave energy power generation device

Abstract

The utility model discloses a wave power generation device which comprises a floating body floating on the water surface of a water body, the middle of the bottom of the floating body is connected to the top end of a vertical rod in a swinging mode, the vertical rod is fixed to the bottom of the water body, and the top face of the floating body and the two sides of the vertical rod are connected with crank throws of crankshafts through connecting rods respectively. A driving wheel is coaxially fixed to the position, located between the crank throws, of a main journal of the crankshaft, the driving wheel is in transmission connection with a transmission wheel, a transmission shaft of the transmission wheel is in transmission connection with a generator, the crankshaft is rotationally connected with a bearing seat fixed to the land, and the reference circle of the driving wheel is larger than that of the transmission wheel. Known from the structure, according to the wave energy power generation device, the vertical rod is connected with the middle of the bottom of the floating body, so that when the wave floats up and down, the upturned wave just enables one side of the floating body to swing upwards, and meanwhile, the other side of the floating body is just located at the bottom of the wave and swings downwards under the flowing action of a water body; therefore, the floating body can make full use of wave energy.

Description

Technical Field

[0001] The utility model relates to the technical field of wave energy power generation, in particular to a wave energy power generation device. Background Art

[0002] With the development of the world economy, the rapid increase of population and the progress of society, the demand for energy is growing day by day. In order to solve the problems of increasing energy shortage and increasingly severe environment, all countries are competing to develop renewable energy. Waves, as the energy generated by water under the action of natural wind and other factors, are also the direction that technicians are striving to break through in research and development.

[0003] Although many patent schemes for generating electricity using wave energy have been disclosed, the energy utilization rate of the rising and falling waves in existing wave power generation equipment is not high. Generally, only the force of the waves when they are lifted is used to generate electricity. However, there is also a certain force when the waves move downward. If this can be utilized, the wave energy can be used more efficiently.

[0004] In addition, there is another factor that affects the industrialization of wave energy, namely: the waves cannot always maintain the ups and downs state for effective power generation. Sometimes the ups and downs of the waves will not reach the state required for power generation. Sometimes, due to strong winds or ships or large organisms swimming around, the waves will be too large to impact the power generation equipment and damage the power generation equipment. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art and provide a wave energy power generation device, which connects a vertical pole with the middle of the bottom of a floating body so that when the waves float up and down, the upward wave crest just causes one side of the floating body to swing upward, while the other side of the floating body is just located at the bottom of the wave and swings downward under the action of the water flow, so that the floating body can fully utilize the wave energy.

[0006] By increasing the gear ratio between the driving wheel and the transmission wheel of the floating body, the generator speed can be increased as much as possible while ensuring that the wave energy is sufficient to drive the floating body to maintain normal reciprocating swing, thereby ensuring the power generation efficiency; in addition, multiple applications can be used to generate electricity at the same time, thereby increasing the total power generation power and achieving the effect of high-power power generation.

[0007] The technical solution adopted by the utility model is:

[0008] The wave energy power generation device comprises a floating body floating on the surface of a water body, wherein the bottom middle part of the floating body is swingably connected to the top end of a vertical pole, the vertical pole is fixed to the bottom of the water body, the top surface of the floating body and the two sides of the vertical pole are respectively connected to the crank of the crankshaft through connecting rods, a driving wheel is coaxially fixed at the main journal position of the crankshaft between the crankshafts, the driving wheel is transmission-connected to a transmission wheel, the transmission shaft of the transmission wheel is transmission-connected to a generator, the crankshaft is rotationally connected through a bearing seat fixed to the land, when the floating body drives the connecting rod to swing upward to the highest point, the connecting rod drives the crankshaft to rotate to the highest point, when the floating body drives the connecting rod to swing downward to the lowest point, the connecting rod drives the crankshaft to rotate to the lowest point, and the pitch circle of the driving wheel is larger than the pitch circle of the transmission wheel.

[0009] A further improvement of the utility model is that the connecting rod is swingably connected to the float through a connecting head, and the connecting head is reciprocatingly slidably connected along the float, and the direction of the reciprocating sliding of the connecting head and the float is the direction of the intersection line of the surface passing through the main shaft axis of the crankshaft and perpendicular to the top surface of the float and the top surface of the float.

[0010] A further improvement of the utility model is that a sleeve is fixed to one end of the connecting rod connected to the crankshaft, and the sleeve is rotatably connected to the crank journal coaxially.

[0011] A further improvement of the utility model is that the phase angle of the two cranks respectively connected to the connecting rods on both sides of the vertical rod and the crankshaft is degrees.

[0012] A further improvement of the present invention is that the transmission shaft is connected to the generator through a clutch device A.

[0013] A further improvement of the utility model is that the top of the vertical pole is an arc surface, and the bottom of the floating body is connected to the top surface of the vertical pole through a swing connection piece so as to swing back and forth along the vertical pole.

[0014] A further improvement of the utility model is that it also includes hydraulic cylinders fixed on both sides of the top surface of the float, and the telescopic rods of the hydraulic cylinders extend downward from the bottom of the hydraulic cylinders. When the telescopic rods are retracted upward into the hydraulic cylinders to the maximum stroke, the bottom ends of the telescopic rods are located at the maximum stroke position of the upward swing corresponding to the position of the telescopic rods on the top surface of the side where the float is located. The transmission shaft is connected to the hydraulic pump through a clutch device B, and the pump outlets of the hydraulic pumps are respectively connected to the hydraulic cylinders.

[0015] A further improvement of the utility model is that the oil outlet pipe of the hydraulic pump is communicated with the respective oil pipes of the hydraulic cylinders through the valve body.

[0016] The beneficial effects of the utility model are:

[0017] First, the wave energy power generation device of the utility model connects the vertical pole with the middle of the bottom of the floating body, so that when the waves float up and down, the upward wave crest just makes one side of the floating body swing upward, and at the same time the other side of the floating body is just at the bottom of the wave and swings downward under the action of the water flow, so that the floating body can fully utilize the wave energy.

[0018] Secondly, the wave energy power generation device of the present invention can more effectively convert the swinging kinetic energy of the connecting rod type floating bodies on both sides of the floating bodies into the rotational kinetic energy of the crankshaft, thereby ensuring the consistency and stability of the rotation direction.

[0019] Thirdly, the wave energy power generation device of the present invention can make the floating body swing around the top of the pole more stably through the structure of the top of the pole, and can also effectively ensure the service life of the connection between the floating body and the top of the pole.

[0020] Fourthly, the wave energy power generation device of the present invention, through the action of the clutch device A, can enable the power generation device to choose to generate electricity or not according to the actual situation of the waves.

[0021] Fifth, the wave energy power generation device of the present invention, through the action of the hydraulic pump and the hydraulic cylinder, can enable the float to provide power compensation when the waves are weak to ensure the stability of power generation, and can also provide resistance when the waves are too strong to ensure the service life of the float, connecting rod and crankshaft.

[0022] Sixth, in the wave energy power generation device of the present invention, since the telescopic rod of the hydraulic cylinder acts on the floating body when the floating body swings to the extreme position, the hydraulic cylinder only needs a relatively small action to ensure that the floating body can achieve a stable reciprocating swing effect, thereby ensuring the power generation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the right side of the floating body of the present application swinging upward to the highest point.

[0024] Figure 2 This is a schematic diagram of the left side of the floating body of the present application swinging upward to the highest point. DETAILED DESCRIPTION

[0025] Combination Figure 1~Figure 2It can be seen that the wave energy power generation device includes a floating body 1 floating on the surface of a water body, the bottom middle of the floating body 1 is swingably connected to the top of a vertical pole 2, the vertical pole 2 is fixed to the bottom of the water body, the top surface of the floating body 1 and the two sides of the vertical pole 2 are respectively connected to the crank 5 of the crankshaft 4 through a connecting rod 3, the crankshaft 4 is coaxially fixed with a driving wheel 6 at the main journal position between the cranks 5, the driving wheel 6 is transmission-connected to a transmission wheel 7, the transmission shaft 8 of the transmission wheel 7 is transmission-connected to a generator 9, the crankshaft 4 rotates through a bearing seat 17 fixed to the land, when the floating body 1 drives the connecting rod 3 to swing upward to the highest point, the connecting rod 3 drives the crank 5 to rotate to the highest point, when the floating body 1 drives the connecting rod to swing downward to the lowest point, the connecting rod 3 drives the crank 5 to rotate to the lowest point, and the pitch circle of the driving wheel 6 is larger than the pitch circle of the transmission wheel 7.

[0026] The connecting rod 3 is swingably connected to the floating body 1 through a connecting head 15, and the connecting head 15 is reciprocatingly slidably connected along the floating body 1. The direction of the reciprocating sliding of the connecting head 15 and the floating body 1 is the direction of the intersection line of the surface passing through the main shaft axis of the crankshaft 4 and perpendicular to the top surface of the floating body 1 and the top surface of the floating body 1.

[0027] A sleeve is fixed to one end of the connecting rod 3 connected to the crankshaft 4, and the sleeve 16 is coaxially rotatably connected to the crank journal.

[0028] The phase angle of the two crank throws 5 connected to the connecting rod 3 and the crankshaft 4 on both sides of the vertical rod 2 is 180 degrees.

[0029] The transmission shaft 8 is transmission-connected to the generator 9 via a clutch device A18.

[0030] The top of the vertical pole 2 is an arc surface, and the bottom of the floating body 1 is connected to the top surface of the vertical pole 2 through a swing connection so as to swing back and forth.

[0031] It also includes a hydraulic cylinder 11 fixed on both sides of the top surface of the float 1, and the telescopic rod of the hydraulic cylinder 11 extends downward from the bottom of the hydraulic cylinder 11. When the telescopic rod is retracted upward into the hydraulic cylinder 11 to the maximum stroke, the bottom end of the telescopic rod is located at the maximum stroke position of the upward swing corresponding to the position of the telescopic rod on the top surface of the side where the float 1 is located. The transmission shaft 8 is connected to the hydraulic pump 10 through the clutch device B19, and the pump outlets of the hydraulic pump 10 are connected to the hydraulic cylinder 11 respectively.

[0032] The oil outlet pipe 12 of the hydraulic pump 10 is communicated with the oil pipes 14 of the hydraulic cylinders 11 through the valve body 13 .

[0033] When the present application is in use, the float 1 swings back and forth around the top of the vertical pole 2 along with the waves on the water surface. The swinging of the float 1 simultaneously drives the connecting rod 3 on the top surface of the float 1 to move up and down. Since the force generated by the up and down swinging of the float 1 by the waves is relatively large, the connecting rod 3 can drive the crank 5 of the crankshaft 4 to rotate around the axis of the main journal of the crankshaft 4, thereby driving the driving wheel 6 to rotate, and then the driving wheel 6 drives the transmission wheel 7 to rotate.

[0034] When the undulations on the surface of the water body where the floating body 1 is located are suitable for power generation and the rhythm of the undulations remains relatively stable, the clutch device A18 enables the transmission shaft 8 of the transmission wheel 7 to be connected with the generator 9, thereby driving the generator 9 to generate electricity.

[0035] When the waves on the surface of the water body where the floating body 1 is located are mostly suitable for power generation, but a small part of the waves cannot reach the power generation state, and the wave fluctuation rhythm remains relatively stable, the clutch device A18 makes the transmission shaft 8 of the transmission wheel 7 connected with the generator 9, thereby driving the generator 9 to generate electricity; at the same time, the clutch device B19 makes the transmission shaft 8 connected with the hydraulic pump 10, so that the hydraulic pump 10 provides hydraulic power to the hydraulic cylinder 11 through the valve body 13, so that the hydraulic cylinder 11 compensates for the swing of the floating body 1, that is, when the fluctuation of the waves is relatively weak, the floating body 1 cannot be directly swung upward to the highest point of the connecting rod 3 by the action of the waves, but needs to consume the crankshaft 4. The rotational inertia drives the crankshaft 5 and the connecting rod 3 to continue to move upward. In this case, the rotation speed of the crankshaft 4 will be consumed, resulting in the inability to continuously output kinetic energy to the transmission wheel 7. Therefore, when the connecting rod 3 swings to the highest position and is about to swing downward, the hydraulic cylinder 11 on the side of the connecting rod 3 that has swung to the highest point drives the telescopic rod to press the floating body 1 downward, and the side of the floating body 1 swings downward under the action of the waves on the water surface, so that the kinetic energy lost by the inertia driving the connecting rod 3 to continue to swing upward is compensated by the force of the hydraulic cylinder 11. When the telescopic rod of the hydraulic cylinder 11 moves downward to separate from the floating body 1, the hydraulic cylinder 11 drives the telescopic rod to retreat upward into the hydraulic cylinder 11.

[0036] When the waves on the surface of the water body where the floating body 1 is located are mostly suitable for power generation, while a small part of the waves exceed the power generation state, and the rhythm of wave fluctuation remains relatively stable, the clutch device A18 makes the transmission shaft 8 of the transmission wheel 7 connected with the generator 9, thereby driving the generator 9 to generate electricity; at the same time, the clutch device B19 makes the transmission shaft 8 connected with the hydraulic pump 10, so that the hydraulic pump 10 provides hydraulic power to the hydraulic cylinder 11 through the valve body 13, so that the hydraulic cylinder 11 limits the swing of the floating body 1, that is, when the fluctuation of the waves is relatively too strong, the floating body 1 still has a certain impact force when it swings upward to the connecting rod 3 reaching the highest point due to the effect of the excessive waves, which will cause the connecting rod 3 to cause impact stress on the crank 5 of the crankshaft 4, which will cause damage to the equipment over time. Therefore, before the connecting rod 3 swings to the highest position, the hydraulic cylinder 11 corresponding to the side of the upwardly swinging connecting rod 3 drives the telescopic rod to extend downward to the lowest stroke. Then, when the floating body 1 swings upward under the action of waves on the water surface until it contacts the bottom end of the telescopic rod, the floating body not only needs to drive the connecting rod 3 to continue to swing upward, thereby driving the crank 5 to rotate around the main journal axis of the crankshaft 4 to the highest point, but also needs to overcome the resistance generated by pushing the telescopic rod upward back into the hydraulic cylinder 11, thereby consuming excess energy from the waves, thereby protecting the connecting rod 3 and the crankshaft 4 and extending their service life.

[0037] When the waves on the surface of the water body where the floating body 1 is located cannot reach the power generation state in most cases, the clutch device A18 and the clutch device B19 are separated from the transmission shaft 8. At this time, even if the swing of the floating body 1 can also drive the crankshaft 4 to rotate, the crankshaft 4 only drives the driving wheel 6 and the transmission wheel 7 to idle without load; even the swing of the floating body 1 cannot drive the crankshaft 4 to rotate continuously.

Claims

1. A wave energy power generation device, characterized in that: The invention comprises a floating body (1) floating on the surface of a water body, wherein the middle of the bottom of the floating body (1) is swingably connected to the top of a vertical pole (2), the vertical pole (2) is fixed to the bottom of the water body, the top surface of the floating body (1) and the two sides of the vertical pole (2) are respectively connected to the crank (5) of the crankshaft (4) through connecting rods (3), the main journal position of the crankshaft (4) between the cranks (5) is coaxially fixed with a driving wheel (6), the driving wheel (6) is drivingly connected to a transmission wheel (7), and the The transmission shaft (8) of the transmission wheel (7) is transmission-connected to the generator (9), and the crankshaft (4) is rotationally connected to a bearing seat (17) fixed to land. When the floating body (1) drives the connecting rod (3) to swing upward to the highest point, the connecting rod (3) drives the crank (5) to rotate to the highest point. When the floating body (1) drives the connecting rod to swing downward to the lowest point, the connecting rod (3) drives the crank (5) to rotate to the lowest point. The pitch circle of the driving wheel (6) is larger than the pitch circle of the transmission wheel (7).

2. The wave energy power generation device according to claim 1, characterized in that: The connecting rod (3) is swingably connected to the floating body (1) via a connecting head (15), and the connecting head (15) is reciprocatingly slidably connected along the floating body (1). The direction of the reciprocating sliding of the connecting head (15) and the floating body (1) is the direction of the intersection line of a surface passing through the main axis of the crankshaft (4) and perpendicular to the top surface of the floating body (1) and the top surface of the floating body (1).

3. The wave energy power generation device according to claim 1, characterized in that: A shaft sleeve is fixed to one end of the connecting rod (3) connected to the crankshaft (4), and the shaft sleeve (16) is coaxially rotatably connected to the crankshaft journal.

4. The wave energy power generation device according to claim 1, characterized in that: The phase angle of the two cranks (5) respectively connected to the connecting rods (3) located on both sides of the vertical rod (2) and the crankshaft (4) is 180 degrees.

5. The wave energy power generation device according to claim 1, characterized in that: The transmission shaft (8) is transmission-connected to the generator (9) via a clutch device A (18).

6. The wave energy power generation device according to claim 1, characterized in that: The top of the vertical pole (2) is an arc surface, and the bottom of the floating body (1) is connected to the top surface of the vertical pole (2) through a swing connection piece so as to swing back and forth.

7. The wave energy power generation device according to claim 1, characterized in that: It also includes hydraulic cylinders (11) respectively fixed on both sides of the top surface of the floating body (1), the telescopic rod of the hydraulic cylinder (11) extending downward from the bottom of the hydraulic cylinder (11), when the telescopic rod is retracted upward into the hydraulic cylinder (11) to the maximum stroke, the bottom end of the telescopic rod is located at the maximum stroke position of the top surface of the floating body (1) corresponding to the position of the telescopic rod, the transmission shaft (8) is connected to the hydraulic pump (10) through the clutch device B (19), and the pump outlet of the hydraulic pump (10) is respectively connected to the hydraulic cylinder (11).

8. The wave energy power generation device according to claim 7, characterized in that: The oil outlet pipe (12) of the hydraulic pump (10) is connected to the respective oil pipes (14) of the hydraulic cylinder (11) through the valve body (13).

Images