TWI532912B - Seawater tidal power plant and its method - Google Patents

Description

Seawater tidal power generation device and method thereof

The present invention relates to a power generating device, and more particularly to a seawater tidal power generating device and method therefor.

According to the general seawater tidal power generation device, the water potential of the sea tide is converted into a rotational kinetic energy that drives the power generating device to achieve the purpose of power generation. The conventional seawater tidal power generating device generally includes a rotating mechanism capable of generating a one-way rotation in a multi-directional force, and the rotating shaft of the rotating mechanism is provided with one or more unidirectional blade sets, and the rotating shaft of the rotating mechanism is further Linking a transmission member to the rotor of the seawater tidal power generating device, whereby the unidirectional blade group passing through the rotating mechanism receives the water flow potential energy of the seawater tide, causing the rotating shaft to generate rotational kinetic energy and interlocking the transmission member to make the seawater The rotor of the tidal power generating device generates a rotation, which in turn generates a power generation effect.

However, the conventional seawater tidal power generation device is only a power generation device that is driven by the water flow of the sea tide, and is directly affected by the tide of the seawater. When the tide of the seawater moves slowly, or the seawater The high difference in the height of the tidal liquid, which causes the bit energy to be insufficient for efficient power generation, will result in the seawater tidal power generation device failing to provide stable and efficient power generation, which is responsible for the inefficient production of the seawater tidal power generation device. In view of the above, the inventors of the present invention have found that the conventional seawater tidal power generating apparatus has a need to further improve the overall apparatus without the occurrence of the present invention.

The object of the present invention is to provide a seawater tidal power generating device and a method thereof, which can not only achieve the effect of improving the power generation efficiency by utilizing the position of the tidal difference, but can further provide a stable and effective large-scale power generation performance.

In order to achieve the above object, the seawater tidal power generating device provided by the present invention comprises a storage reservoir for storing seawater, a valve group including a valve, and a plurality of abutting grooves on the circumferential side of the valve. And the valve assembly is provided with a plurality of power components and a clamping plate relative to the abutting slots, and the power components drive a reciprocating shaft, and the end of the shaft is fixed to the clamping plate, and the clamping plate can be Extending the valve into the abutment groove of the valve; a rotating device comprising a motor and a transmission shaft for outputting a rotational power coupled to the motor and driven by the motor And performing a shaft rotation, the transmission shaft is coupled to the valve to drive the valve to rotate by the transmission shaft; a water inlet/drain unit includes a water inlet/drainage channel, and the water inlet/drainage channel is connected at one end. The reservoir is connected to the ocean at the other end, and each of the inlet/drainage channels is provided with an inlet/drain valve at each end; a generator set is disposed at the inlet/drainage channel and is located at the reservoir Inlet/drain valve, and It is located at the sea level where the seawater is ebb tide to effectively increase the differential pressure.

The seawater tidal power generation method provided by the present invention comprises the following steps: Step 1: When the water is completely ebb, the valve and the water inlet/drainage valves completely close the water inlet/drainage channel, so that the storage reservoir does not Interacting with the ocean; Step 2: At high tide, when the water level of the ocean and the reservoir reaches a predetermined liquid level difference, the water inlet/drainage valves will be opened, so that the reservoir can be drained/drained The road is connected to the ocean, and the seawater is drained from the ocean to the reservoir by the water inlet/drainage channel, and the water flow of the sea tide is used to push the blade group to rotate to form rotational kinetic energy for the generator set to generate electricity; Step 3 : Before the full tide, when the water level difference between the ocean and the reservoir is reduced to the predetermined liquid level difference, the valves will be opened, so that the reservoir directly communicates with the ocean, so that the reservoir can quickly enter the water. Reach the same liquid height as the ocean; Step 4: When the reservoir reaches the same liquid level as the ocean, the valves and the inlet/drain valves will be closed, so that the reservoir is not connected to the ocean to close The reservoir Step 5: When the water is completely ebb, the water inlet/drainage valves will be opened, so that the reservoir can communicate with the ocean through the water inlet/drainage channel, so that the seawater can be drained from the reservoir by the water inlet/drainage channel. To the ocean, and using the water flow movement of the reservoir to push the blade group to rotate to form rotational kinetic energy for the generator set to generate electricity; Step 6: When the reservoir When the water level of the reservoir reaches a predetermined low water level, and the power generation efficiency of the generator set is affected, the valve system will be opened, so that the reservoir directly communicates with the ocean, and the reservoir is quickly drained before the seawater returns. , reaching the same low water level as the ocean; Step 7: Repeat steps 1 through 6.

The seawater tidal power generating device and the method thereof provided by the present invention, the valve group is provided for the reservoir to quickly and effectively store the potential of the tidal difference, so as to utilize the stored tidal range to achieve the effect of improving the power generation efficiency, and Further, power generation is stably performed to provide stable and efficient power generation performance.

100‧‧‧Seawater Tidal Power Plant

20‧‧‧Valve Group

21‧‧‧ Valve

211‧‧‧ Abutment slot

212‧‧‧ Elastomers

22‧‧‧Power components

221‧‧‧ shaft

23‧‧‧Card board

24‧‧‧Combination Department

241‧‧‧ concave arc

242‧‧‧ convex arc

25‧‧‧ Elastomers

26‧‧‧ Elastomers

27‧‧‧ wing

28‧‧‧Card cover

281‧‧‧ Elastomers

30‧‧‧Rotating device

31‧‧‧Motor

32‧‧‧Drive shaft

40‧‧‧Inlet/Drainage Unit

41‧‧‧Inlet/drainage

42‧‧‧Inlet/Drainage Valve

50‧‧‧Generator

51‧‧‧ blade group

300‧‧ ‧ reservoir

400‧‧‧The ocean

Figure 1 is a side cross-sectional view showing a first embodiment of the present invention.

Figure 2 is a partially enlarged side elevational view of the first embodiment of the present invention.

Figure 3 is a cross-sectional view of the valve block of the first embodiment of the present invention to show the state in which the card is not locked.

Fig. 4 is a cross-sectional view showing the valve block of the first embodiment of the present invention to show the state in which the card is engaged with the valve.

Fig. 5 is a schematic view showing the use of the first embodiment of the present invention to show the state before the high tide.

Fig. 6 is a schematic view showing the use of the first embodiment of the present invention to show the use pattern at the time of high tide.

Figure 7 is a schematic view showing the use of the first embodiment of the present invention to show the state in which the valve group is opened before full tide.

Figure 8 is a schematic view showing the use of the first embodiment of the present invention to show the state before the ebb.

Fig. 9 is a schematic view showing the use of the first embodiment of the present invention to show the use form at the time of low tide.

Fig. 10 is a schematic view showing the use of the first embodiment of the present invention to show the state in which the valve group is opened before the re-emergence.

Figure 11 is a cross-sectional view showing the valve block of the second embodiment of the present invention to show that the card is not stuck The aspect of the valve.

Figure 12 is a cross-sectional view showing the valve block of the second embodiment of the present invention to show the state in which the card is clamped.

Figure 13 is a schematic view showing the use of the second embodiment of the present invention to show the state before the high tide.

Figure 14 is a schematic view showing the use of the second embodiment of the present invention to show the use pattern at the time of high tide.

Figure 15 is a schematic view showing the use of the second embodiment of the present invention to show the state in which the valve group is opened before the tide is full.

Figure 16 is a schematic view showing the use of the second embodiment of the present invention to show the state before the ebb tide at full tide.

Figure 17 is a schematic view showing the use of the second embodiment of the present invention to show the use pattern at the time of low tide.

Figure 18 is a schematic view showing the use of the second embodiment of the present invention to show the state in which the valve group is opened before the re-surge.

Figure 19 is a cross-sectional view showing a valve block of a third embodiment of the present invention to show a state in which the joint is not engaged.

Figure 20 is a plan view of the valve block of the third embodiment of the present invention to show that the card is engaged with the valve and the valve group is closed.

Figure 21 is a cross-sectional view showing the valve block of the third embodiment of the present invention to show that the valve plate is not locked and the valve group is opened.

Figure 22 is a plan view of the valve block of the third embodiment of the present invention to show the state in which the valve block is opened.

Figure 23 is a side cross-sectional view showing the valve block of the fourth embodiment of the present invention to show the state in which the snap cover is not locked.

Figure 24 is a side cross-sectional view showing the valve block of the fourth embodiment of the present invention to show the state in which the snap cover is engaged with the valve.

1 to 4 are a side cross-sectional view, a partial enlarged side view, and a cross-sectional view of a valve block of a first embodiment of the present invention, which discloses a seawater tidal power generating device 100. The seawater tidal power generating device 100 includes: a reservoir 300 which is adjacent to but isolated from the ocean 400, and the reservoir 300 can be appropriately disposed in a coastal area with obvious tidal range, and the reservoir 300 is provided for Store sea water.

At least one valve group 20 is juxtaposed between the reservoir 300 and the ocean 400 for selectively isolating the reservoir 300 from the ocean 400, and the valve group 20 includes a valve 21, and the peripheral side of the valve 21 A plurality of abutting grooves 211 are provided, wherein the abutting grooves 211 are disposed on the upper, lower, left and right sides of the valve 21, and an elastic body 212 is disposed at the bottom of the abutting grooves 211. 20 is provided with a plurality of power components 22 and a clamping plate 23 relative to the abutting grooves 211, wherein the clamping plates 23 are effective against water pressure, and the power components 22 are spaced apart from the valve. 21 above, below, to the left and to the right, and having a predetermined distance from the valve 21, in the first embodiment of the present invention, the power elements 22 are hydraulic cylinder mechanisms, and the power elements 22 are driven to reciprocate The actuating shafts 221 are disposed toward the abutting grooves 211, and are selectively movable in a direction toward or away from the abutting grooves 211, and are disposed above and below the valve 21, The ends of the shafts 221 of the left and right sides are respectively fixed with the clamping plate 23, and the clamping plates 23 can be extended. The elastic members 212 are inserted into the abutting grooves 211 to improve the adhesion between the clamping plates 23 and the abutting grooves 211 to achieve watertightness, and the valve 21 is The peripheral side of the groove 211 is further provided with opposite wing portions 27, and the wing portions 27 extend outwardly from the abutting grooves 211, so that the card plates 23 can be made of the wings 27 easily protrudes into the abutment slots 211.

The second rotating device 30 includes a motor 31 and a transmission shaft 32 for outputting a rotational power. The transmission shaft 32 is coupled to the motor 31 and is driven by the motor 31 for shaft rotation. The transmission shaft 32 is coupled to the valve 21 to drive the valve 21 to rotate by the transmission shaft 32, so that the valve 21 can be easily opened and closed. In the first embodiment of the present invention, The transmission shaft 32 is longitudinally coupled to the valve 21 at an intermediate position on the upper side of the valve 21, so that the valve 21 can be pivoted in the vertical direction, so that the valve 21 can be rotated in an axial direction and has a fast rotation and power saving. The advantages.

An water inlet/drainage unit 40 includes a water inlet/drainage passage 41 connected to the reservoir 300 at one end and connected to the ocean 400 at the other end, and the water inlet/drainage passage 41 Each of the two ends is provided with a water inlet/drain valve 42 for selectively opening the water inlet/drainage passage 41, so that the reservoir 300 communicates with the ocean 400 for the seawater level. The difference is selected by the ocean 400 to the reservoir 300, or is selectively drained from the reservoir 300 to the ocean 400. In the first embodiment of the present invention, the inlet/drainage passage 41 is a U-shaped waterway, which is The sea level is placed downward under the valve block 20, and the differential pressure can be further increased to improve the power generation efficiency.

A generator set 50 is disposed between the water inlet/drainage passage 41 and between the water inlet/drainage valves 42. The generator set 50 includes a blade set 51, and the blade set 51 is movable by water flow. The genset 50 can be driven to rotate and generate power by the rotational kinetic energy of the blade set 51. In the first embodiment of the present invention, the genset 50 is disposed below the sea level and is disposed at the lowest of the water inlet/drainage channel 41. Point to form the most efficient potential energy difference, thereby increasing the power generation efficiency of the generator set 50 by the high liquid pressure of the reservoir 300.

For a further understanding of the structural features of the present invention, the application of the technical means, and the intended effect, the manner of use of the present invention will be described. It is believed that the invention can be more deeply and specifically understood as follows: Referring to Figures 5 to 10, and referring to Figures 2 and 3, the seawater tidal power generating device 100 is disposed in a coastal area, and the reservoir 300 is isolated by the valve group 20. And the ocean 400, wherein the steps of the seawater tidal power generation method of the present invention include: Step 1: When the water is completely ebb, the valves 21 and the water inlet/drain valves 42 completely close the water inlet/drainage passage 41 , so that the reservoir 300 does not communicate with the ocean 400, The seawater does not enter the reservoir 300. When the tide begins, the water level of the ocean 400 will rise with the tide. At this time, the Ocean 400 series will gradually generate a water level difference with the reservoir 300.

Step 2: When the tide is high, when the water level of the ocean 400 and the reservoir 300 reaches a predetermined liquid level difference, the seawater tidal power generating device 100 will open the water inlet/drain valve 42 so that the reservoir 300 can be used by The water inlet/drainage passage 41 communicates with the ocean 400, and the seawater is drained from the ocean 400 to the reservoir 300 through the water inlet/drainage passage 41, and the water flow movement of the seawater tide is used to push the blade group 51 to rotate to form rotational kinetic energy. For the generator set 50 to generate electricity.

Thereby, the seawater tidal power generating device 100 utilizes the timely closing of the water inlet/drainage channel 41, so that the ocean 400 can generate a water level difference with the reservoir 300, thereby storing the potential of the tidal difference, so that it has a larger position to push. The blade group 51 generates rotational kinetic energy for the genset 50 to generate electricity, thereby achieving the effect of improving power generation efficiency. Further, the seawater tidal power generation device 100 sets the genset 50 at the lowest point of the water inlet/drainage channel 41. At the same time, the water inlet/drainage passage 41 is disposed below the valve group 20 from the sea level downward, so as to further increase the water flow movement potential of the seawater tide to further increase the power generation efficiency of the generator set 50.

Step 3: Before the full tide, since the Ocean 400 series has risen to the highest water level, at this time, the generator set 50 is still generating power by the water flow of the sea tide, so the water level of the ocean 400 and the reservoir 300 The difference will gradually shrink. When the water level difference between the ocean 400 and the reservoir 300 is reduced to a predetermined liquid level difference, the power components 22 will drive the shafts 221 to move in a direction away from the abutment slots 211. The valve plates 23 are disengaged from the abutment grooves 211, so that the valves 21 can be rotated in the vertical direction by the drive shaft 32, so that the valves 21 can be quickly opened. The reservoir 300 is directly connected to the ocean 400, and the reservoir 300 is rapidly flooded into the water to reach the same liquid level as the ocean 400.

Step 4: When the reservoir 300 reaches the same liquid level as the ocean 400, the valves 21 and the inlet/drain valves 42 are closed, so that the reservoir 300 does not communicate with the ocean 400 to close the reservoir. The reservoir 300, in step 3, the valves 21 are rapidly opened in a rotating manner to communicate the reservoir 300 with the ocean 400, and then in step 4, the valves 21 are rotated The manners are then turned back to the original position, and the power elements 22 are driven to re-drive the shafts 221 to move in the direction of the abutting grooves 211, so that the clamping plates 23 extend into the abutting grooves 211. In order to limit the rotation of the valves 21, the valve 21 is inserted into the abutment grooves 211 to abut the elastic body 212, thereby lifting the valve 212. The adhesion between the card board 23 and the abutting grooves 211 can increase the adhesion strength of the card board 23 and the abutting grooves 211 when the liquid pressure is high, and the pressure and watertightness can be achieved. In effect, at the same time, the seawater tidal power generating device 100 will close the water inlet/drain valves 42 to close the reservoir 300 so that the reservoir 300 does not communicate with the ocean 400.

Step 5: When the tide is low, the water level of the ocean 400 will decrease with the tide, and the ocean 400 and the reservoir 300 will have a water level difference. When the tide is completely ebb, the seawater tidal power generating device 100 will open the water/drainage. The valve 42 allows the reservoir 300 to communicate with the ocean 400 through the water inlet/drainage passage 41, and the seawater is drained from the reservoir 300 to the ocean 400 through the inlet/drainage passage 41, and is moved by the tide of the seawater. The position can push the blade set 51 to rotate to form rotational kinetic energy for the generator set 50 to generate electricity.

Thereby, the seawater tidal power generating device 100 utilizes the timely closing of the water inlet/drainage channel 41, so that the ocean 400 can generate a water level difference with the reservoir 300, thereby storing the tidal potential energy, so that it has a larger position to push the blade. The group 51 generates rotational kinetic energy for the generator set 50 to generate electricity, thereby achieving an effect of improving power generation efficiency.

Step 6: When the water level of the reservoir 300 reaches a predetermined low water level, and the water level of the reservoir 300 is reduced to be insufficient to effectively push the blade group 51, thereby affecting the power generation efficiency of the generator set 50, the power components 22, driving the shafts 221 to move away from the abutting grooves 211 in synchronization, so that the clamping plates 23 are disengaged from the abutting grooves 211, so that the valves 21 can be driven by the transmission shaft 32. Driving the vertical direction as the axis to rotate, so that the valve 21 is opened, so that the reservoir 300 directly communicates with the ocean 400, to quickly remove the remaining seawater of the reservoir 300, so that the reservoir 300 reaches the ocean 400 The low water level, and then, before the seawater returns, the valves 21 will be returned to their original positions, and the power components 22 will be re-driven. The shafts 221 are synchronously moved toward the abutting grooves 211 to extend the engaging plates 23 into the abutting grooves 211 for limiting the valves 21, thereby limiting the When the valve 21 is rotated, and the engaging plates 23 are inserted into the abutting grooves 211, the elastic body 212 is abutted to improve the adhesion between the clamping plates 23 and the abutting grooves 211. At the same time, the seawater tidal power generating device 100 will close the water inlet/drainage valve 42 to close the reservoir 300 so that the reservoir 300 does not communicate with the ocean 400.

Step 7: Repeat steps 1 to 6 to reproduce the water level difference between the ocean 400 and the reservoir 300 during high tide, and then cause the seawater tidal power generating device 100 to open the water inlet/drain valve 42 to make the storage. The reservoir 300 can communicate with the ocean 400 through the water inlet/drainage passage 41, and the seawater can be drained from the ocean 400 to the reservoir 300 through the water inlet/drainage passage 41, and the water flow can be driven by the tide of the seawater to push the blade group. The rotation of 51 generates rotational kinetic energy for the generator set 50 to generate electricity, so that the seawater tidal power generation device 100 can generate electricity by using a sea tide cycle.

Therefore, the seawater tidal power generation device 100 of the present invention can utilize the potential energy of the tidal difference to achieve the effect of improving the power generation efficiency, and at the same time, the valve group 20 controls the water inlet of the reservoir 300 according to the tidal water level difference or The drainage allows the seawater tidal power generating device 100 to quickly and efficiently store the potential of the tidal range, thereby providing stable and efficient power generation performance.

Please refer to FIG. 11 to FIG. 18 again, which is a schematic view of the use of the second embodiment of the present invention, which is different from the first embodiment of the present invention in that the transmission shaft 32 is The valve 21 is laterally coupled at an intermediate position of the side of the valve 21, so that the valve 21 can be pivoted in the horizontal direction, and can be rotated rapidly to save power, and the remaining structural features of the second embodiment of the present invention, The use of the technical means, the mode of use and the intended effect are the same as the first embodiment of the present invention described above, and therefore will not be further described herein.

Please refer to FIG. 19 to FIG. 22 again, which is a schematic view of the use of the third embodiment of the present invention, which is different from the first embodiment of the present invention in that the two valve groups 20 are adjacent to each other. And a coupling portion 24 is disposed on one side of the valve group 20, and the coupling portion 24 is configured to allow the valve groups 20 to be engaged with each other, in the third embodiment of the present invention. For example, the joint portion 24 is a concave arc portion 241 and a convex arc portion 242. The concave arc portion 241 and the convex arc portion 242 are respectively disposed on adjacent one side of the different valve groups 20, The valve groups 20 can be snap-fitted when the valve groups 20 are closed, and the valve groups 20 are provided with an elastic body 25 between the joint portions 24 to provide a watertight effect when the valve groups 20 are closed. In addition, in the third embodiment of the present invention, the abutting grooves 211 are only disposed on the upper side and the lower side of the valve 21, and the power components 22 and the clamping plates 23 are also disposed only on the valve 21. The upper side and the lower side, wherein the drive shafts 32 are respectively disposed longitudinally on the side of the valve group 20, that is, the valve shafts 20 are relatively remote from one another side for the drive shafts 32 to longitudinally connect the valves. 21, the valve 21 can be rotated in the vertical direction as an axis, and rotated in the opposite direction to open or close, it is worth mentioning that, in the third embodiment of the present invention, the valve group 20 is on the drive shaft The side of the side of the 32 is further provided with an elastic body 26, and the effect of the transmission shaft 32 is watertight, and the remaining structural features, technical means, usage modes and expected effects of the third embodiment of the present invention are It is the same as the first embodiment of the present invention described above, and therefore will not be described again.

Please refer to FIG. 23 to FIG. 24 again, which is a schematic view of the use of the fourth embodiment of the present invention, which is different from the first embodiment of the present invention in that the ends of the shafts 221 are A card cover 28 is fixedly attached to each other, and an elastic body 281 is disposed on the bottom of the card cover 28, and the card cover 28 is extended through the shafts 221 to cover the periphery of the valve 21. And the elastic body 281 is brought against the valve 21 to achieve watertight effect.

Further, the features of the present invention and the achievable expected effects thereof are as follows: The seawater tidal power generating device of the present invention can utilize the potential energy of storing tides to achieve the effect of improving power generation efficiency, and at the same time, by using the valve The group controls the inflow or drainage of the reservoir according to the tidal water level difference, so that the seawater tidal power generating device can quickly and effectively store the potential of the tidal difference, thereby providing stable and effective power generation efficiency.

In summary, the present invention has excellent advancement and practicability in similar products, and at the same time, the technical materials of such structures are frequently investigated at home and abroad, and the same structure is not found in the literature. The invention already has the invention patent requirements, and the application is filed according to law.

However, the above-mentioned ones are merely preferred embodiments of the present invention, and the equivalent structural changes of the present invention and the scope of the claims are intended to be included in the scope of the present invention.

100‧‧‧Seawater Tidal Power Plant

20‧‧‧Valve Group

21‧‧‧ Valve

22‧‧‧Power components

23‧‧‧Card board

30‧‧‧Rotating device

31‧‧‧Motor

32‧‧‧Drive shaft

40‧‧‧Inlet/Drainage Unit

41‧‧‧Inlet/drainage

42‧‧‧Inlet/Drainage Valve

50‧‧‧Generator

51‧‧‧ blade group

300‧‧ ‧ reservoir

400‧‧‧The ocean

Claims (10)

A seawater tidal power generating device, comprising: a storage reservoir for storing seawater; at least one valve group disposed between the reservoir and the ocean, the valve group comprising at least one valve, A plurality of abutting grooves are disposed on a circumferential side of the valve, and the valve block is provided with a plurality of power components and a clamping plate relative to the abutting grooves, and the power components drive a reciprocating shaft, and the end of the shaft is fixed The card board can extend into the abutment slot; at least one rotating device includes a motor and a drive shaft for outputting a rotational power, the drive shaft being coupled to the motor And being driven by the motor to perform shaft rotation, the transmission shaft is coupled to the valve to drive the valve to rotate by the transmission shaft; at least one water inlet/drainage unit includes a water inlet/drainage channel, and the inlet One end of the water/drainage channel is connected to the reservoir, and the other end is connected to the ocean, and the inlet/drainage channel is provided with an inlet/drain valve at each end; and a generator set is disposed below the sea level. And placed in the water inlet/drainage And located such feed / discharge valve room. The seawater tidal power generating device according to claim 1, wherein the abutting groove is provided with an elastic body. The seawater tidal power generating device according to claim 1, wherein the transmission shaft is longitudinally coupled to the valve at an intermediate position on the upper side of the valve. The seawater tidal power generating device according to claim 1, wherein the transmission shaft is laterally coupled to the valve at an intermediate position of the side of the valve. The seawater tidal power generating device according to claim 1, wherein the two valve groups are arranged adjacent to each other, and the abutting grooves are provided only on the upper side and the lower side of the valves, and the same The clamping plate is disposed on the upper side and the lower side of the valve corresponding to the abutting groove, and the driving shafts are longitudinally connected to the valve by the valve groups relatively far from one side of the valve, and the valve groups are opposite one of the valves The side systems are each provided with a joint portion for the valve groups to be engaged with each other. a seawater tidal power generating device according to claim 5, wherein the knot The joint portion is a concave arc portion and a convex arc portion, and the concave arc portion and the convex arc portion are respectively disposed on one side adjacent to the different valve groups. The seawater tidal power generating device according to claim 5, wherein the valve group is provided with an elastic body between the joint portions. The seawater tidal power generating device according to claim 1, wherein the water inlet/drainage channel is a U-shaped water channel and is disposed below the valve group with the sea level facing downward. The seawater tidal power generating device according to claim 1, wherein the valve is provided with at least one wing portion on a circumferential side of the abutting groove, and the wing portion extends outward from the abutting grooves. A seawater tidal power generation method, the steps of which include: Step 1: At the time of complete low tide, an inlet/drainage channel between a reservoir and the ocean is to be respectively disposed on the water inlet/drainage channel by two The water inlet/drainage valves at both ends completely close the water inlet/drainage channel, so that the reservoir does not communicate with the ocean; Step 2: When the water level of the ocean and the reservoir reaches a predetermined liquid level difference at high tide, The water inlet/drainage valves will be opened so that the reservoir can communicate with the ocean through the water inlet/drainage channel, so that the seawater can be drained from the ocean to the reservoir by the water inlet/drainage channel, and the seawater tide is utilized. The water flow movement position can promote the operation of one of the water inlet/drainage passages for the generator set to generate electricity; Step 3: Before the full tide, when the water level difference between the ocean and the storage reservoir is reduced to a predetermined liquid The height difference, a valve system located between the reservoir and the ocean will be opened, so that the reservoir directly communicates with the ocean, so that the reservoir can quickly enter the water and reach the same liquid level as the ocean tide; Step 4: When the reservoir reaches the same level as the ocean When high, the valve and the inlet/drainage valves will be closed so that the reservoir does not communicate with the ocean to close the reservoir; Step 5: When the water is completely ebb, the inlet/drain valves will open The water reservoir can be connected to the ocean through the water inlet/drainage channel, so that the seawater can be drained from the reservoir to the ocean by the water inlet/drainage channel, and the water flow movement of the reservoir height difference can be used to promote the reservoir. The generator set is activated The generator set performs power generation; step 6: when the water level of the reservoir reaches a predetermined low water level, and the power generation efficiency of the generator set is affected, the valve system is opened, so that the reservoir directly communicates with the ocean, so that the The reservoir is flooded quickly and reaches the same low water level as the ocean; Step 7: Repeat steps 1 through 6.