A sea water power generation device

Abstract

The application relates to the technical field of power generation equipment, and discloses a seawater power generation device which comprises a lower floating body, an upper floating body and a power generation part, the lower floating body comprises a base and a sliding cylinder, the sliding cylinder is located above the base, the upper floating body comprises a float body, a support frame and a float rod, the float body is slidably arranged on the sliding cylinder, the support frame is arranged above the float body, and the support frame is connected with the float rod through a connecting assembly; the power generation part comprises a bottom plate, a support plate, a sliding plate, a ball screw, a generator and a sliding mechanism, the sliding plate and the bottom plate are connected with the top and the bottom of the sliding cylinder respectively, the support plate is fixedly connected with the sliding cylinder, the ball screw is rotatably connected between the bottom plate and the support plate, the support plate is provided with the generator connected with the ball screw, the sliding mechanism comprises a sliding frame and a sliding block, the sliding frame is located between the bottom plate and the support plate and is slidably connected with the sliding block, the ball screw is screwed with the sliding block, and the lower end of the float rod is fixedly connected with the sliding block. The device has the advantages of wide application range, high power generation efficiency, good power generation stability, long service life and convenient installation and maintenance.

Description

Technical Field

[0001] This invention relates to the field of power generation technology, and more particularly to a seawater power generation device. Background Technology

[0002] Ocean wave energy is a clean and renewable energy source. Compared with wind and solar energy, it exhibits less variability per unit time, better predictability, and higher energy density. However, existing ocean wave power generation equipment suffers from problems such as complex structure, large size, high installation precision requirements, low power generation efficiency, and high installation and maintenance costs. Summary of the Invention

[0003] The purpose of this invention is to provide a seawater power generation device that has a wide range of applications, high power generation efficiency, good stability, long service life, and is easy to install and maintain.

[0004] The objective of the invention is achieved through the following technical solution:

[0005] A seawater power generation device includes a lower float, an upper float, and a power generation unit. The lower float includes a base and a slide cylinder, with the slide cylinder located above the base. The upper float includes a float body, a support frame, and a float rod. The float body has a through hole adapted to the slide cylinder and slides on the slide cylinder. The support frame is fixedly connected to the upper part of the float body, and the top of the support frame is connected to the upper end of the float rod via a connecting assembly. The power generation unit includes a base plate, a support plate, a sliding plate, a ball screw, a generator, and a sliding mechanism. The sliding plate and the base plate are respectively connected to the top and bottom of the slide cylinder. The support plate is located below the sliding plate and fixed to the inner wall of the slide cylinder. The system is connected in the following ways: a ball screw is rotatably connected between the base plate and the support plate; a generator is fixedly connected above the support plate; the generator's shaft is coaxially connected to the ball screw; the sliding mechanism includes a slide and a slider; the slide is located between the base plate and the support plate; the slider slides on the slide; the ball screw is screwed to the slider; the lower end of the float passes through the slide plate and the support plate in sequence and is fixedly connected to the slider; the float body can move up and down along the slide under the action of waves; the float body drives the float to move synchronously, thereby converting the linear motion of the float into the rotational motion of the generator shaft, thus realizing the generator's power generation.

[0006] In the aforementioned seawater power generation device, the connecting assembly includes an upper plate, a lower plate, a pair of ball seat assemblies, and a ball rod. The upper plate is fixed to the top of the support frame, and a ball seat assembly is fixedly connected below the upper plate. The lower plate is fixed to the upper end of the float, and another ball seat assembly is fixedly connected above the lower plate. The two ball seat assemblies are identical in size and structure and are arranged opposite to each other. The two ends of the ball rod are respectively hinged to the corresponding ball seat assemblies. The ball seat assembly includes a shell body and a ball sleeve. The ball sleeve includes two hemispherical sleeves of identical size and structure. Each hemispherical sleeve has a recessed hemispherical portion. The shell body has an installation opening for placing the hemispherical sleeves. A through hole is provided on the side of the shell body opposite to the installation opening. The two hemispherical sleeves are fitted into the inner cavity of the shell body. The ball rod includes a rod body and ball heads fixedly connected to both ends of the rod body. The cavity formed by the mating of the hemispherical portions of the two hemispherical sleeves is hinged to the corresponding ball heads.

[0007] In the aforementioned seawater power generation device, the rod body includes a first rod body and a second rod body. The first rod body is provided with a screw, and the second rod body is provided with a screw hole adapted to the screw. The first rod body and the second rod body are coaxial after being threaded together.

[0008] In the aforementioned seawater power generation device, the slide includes a support beam and a slide rail. The upper and lower ends of the support beam are fixedly connected to the base plate and the support plate, respectively. The slide rail is fixedly connected to the inner side of the support beam. The slide rail is parallel to the ball screw, and the slider is slidably mounted on the slide rail.

[0009] In the aforementioned seawater power generation device, the slide includes two slides, which are symmetrically distributed on both sides of the ball screw, and the slider is slidably disposed between the two slide rails.

[0010] In the aforementioned seawater power generation device, the floats include two floats, which are symmetrically distributed on both sides of the ball screw. Both floats are parallel to the ball screw. The sliding plate is provided with ball sleeves adapted to the corresponding floats, and the floats slide within the corresponding ball sleeves.

[0011] In the aforementioned seawater power generation device, a braking device is provided inside the sliding cylinder. The braking device includes a sliding plate, a mounting frame, brake pads, booster blocks, and a first hydraulic cylinder that drives the sliding plate to move towards the brake pads. The first hydraulic cylinder is located outside the support beam and fixedly connected to the base plate. The mounting frame includes a mounting plate and two connecting plates perpendicular to it. The mounting plate is fixedly connected to the slider. The two connecting plates are located on both sides of the support beam. Brake pads are fixedly connected to the inner sides of the two connecting plates respectively. The two brake pads are distributed on both sides of the first hydraulic cylinder. A sliding plate is provided between the first hydraulic cylinder and the corresponding brake pad. The upper and lower ends of the sliding plate are slidably connected to the base plate and the support plate respectively. The booster blocks include two and are distributed on both sides of the first hydraulic cylinder. The booster blocks are fixedly connected to the inner sides of the corresponding sliding plates. Each of the two booster blocks has an inclined part adapted to the push rod of the first hydraulic cylinder. When the push rod of the first hydraulic cylinder abuts against the two inclined parts, the two booster blocks respectively drive the corresponding sliding plates to abut against the corresponding brake pads, thereby limiting the speed of the slider.

[0012] In the aforementioned seawater power generation device, a second hydraulic cylinder is fixedly connected below the support plate. The second hydraulic cylinder is located between two sliding plates. Boosting blocks are respectively provided on both sides of the second hydraulic cylinder. The two boosting blocks are respectively fixedly connected to the corresponding sliding plates. An oil pump is fixedly connected above the support plate. The first hydraulic cylinder and the second hydraulic cylinder are respectively connected to the oil pump.

[0013] In the aforementioned seawater power generation device, the support plate is fixedly connected to the fixed side of the ball screw, the base is fixedly connected to the supporting side of the ball screw, the ball screw is rotatably connected to both the fixed side and the supporting side of the ball screw, the slider is fixedly connected to the ball screw nut, the ball screw nut is screwed to the ball screw, and the generator is connected to the ball screw via a coupling.

[0014] In the aforementioned seawater power generation device, a connecting cylinder is provided between the sliding cylinder and the base. The lower end of the connecting cylinder is fixedly connected to the base, and the upper end of the connecting cylinder is detachably connected to the sliding cylinder.

[0015] In summary, the beneficial technical effects of the present invention are as follows:

[0016] This invention utilizes the reciprocating linear motion of a float body relative to a sliding cylinder. A float rod connected to the float body converts this linear motion into rotational motion via a ball screw and a slider, driving the generator shaft to rotate with the ball screw, thus generating electricity. This device boasts high power generation efficiency and is easy to install and maintain.

[0017] By installing a braking device, the speed of the float body can be limited, preventing damage to the device from excessively fast movement of the float body and extending the service life of the power generation device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the power generation section of the present invention;

[0020] Figure 3 This is a schematic diagram of the power generation unit of the present invention from another perspective;

[0021] Figure 4 This is a cross-sectional view of the present invention;

[0022] Figure 5 This is a cross-sectional view from another perspective of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the floating body of the present invention;

[0024] Figure 7 This is an exploded structural diagram of the ball seat assembly of the present invention;

[0025] Figure 8 This is an exploded structural diagram of the cue stick of the present invention;

[0026] Figure 9 This is a schematic diagram of the slider, mounting bracket, and brake pads of the present invention.

[0027] The diagram shows: 1. Lower float; 11. Base; 12. Slide cylinder; 2. Upper float; 21. Float body; 211. Through hole; 22. Support frame; 23. Float rod; 3. Generator unit; 31. Base plate; 311. Ball screw support side; 32. Support plate; 321. Ball screw fixed side; 33. Slide plate; 331. Ball sleeve; 34. Ball screw; 35. Generator; 36. Sliding mechanism; 361. Carriage; 3611. Support beam; 3612. Slide rail; 362. Slider; 3621. Ball screw nut; 4. Connecting assembly; 41. Upper plate. 42. Lower plate; 43. Ball seat assembly; 431. Shell body; 4311. Mounting port; 4312. Through hole; 432. Ball sleeve; 4321. Hemispherical sleeve; 4322. Hemispherical part; 44. Club; 441. Club body; 4411. First club body; 4412. Second club body; 442. Ball head; 5. Braking device; 51. Sliding plate; 52. Mounting bracket; 521. Mounting plate; 522. Connecting plate; 53. Brake pad; 54. Boosting block; 55. First hydraulic cylinder; 56. Second hydraulic cylinder; 57. Oil pump; 6. Coupling; 7. Connecting cylinder. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-9 The present invention will be described in further detail below.

[0029] like Figure 1 As shown, a seawater power generation device includes a lower float 1, an upper float 2 and a power generation unit 3. The lower float 1 includes a base 11 and a slide cylinder 12. In this embodiment, the base 11 is a hollow cylindrical shape, and the slide cylinder 12 is located above the base 11.

[0030] like Figure 1 , 6 As shown, the upper float 2 includes a float body 21, a support frame 22, and a float rod 23. The float body 21 has a through hole 211 in the center that is adapted to the slide cylinder 12. The float body 21 is a hollow sealed ring. The slide cylinder 12 passes through the through hole 211 and is slidably connected to the float body 21. The float body 21 can move along the length of the slide cylinder 12. The support frame 22 is fixedly connected to the top of the float body 21. The top of the support frame 22 is connected to the upper end of the float rod 23 through a connecting component 4.

[0031] like Figure 2 , 3 As shown, the power generation unit 3 includes a base plate 31, a support plate 32, a sliding plate 33, a ball screw 34, a generator 35, and a sliding mechanism 36. The sliding plate 33 and the base plate 31 are respectively connected to the top and bottom of the slide cylinder 12. The support plate 32 is located below the sliding plate 33 and is fixedly connected to the inner wall of the slide cylinder 12. The ball screw 34 is rotatably connected between the base plate 31 and the support plate 32. The ball screw 34 is arranged along the axial direction of the slide cylinder 12. The generator 35 is fixedly connected above the support plate 32. The rotating shaft of the generator 35 is coaxially connected to the ball screw 34. The sliding mechanism 36 includes a slide frame 361 and a slider 362. The slide frame 361 is fixedly connected between the base plate 31 and the support plate 32. The slider 362 is slidably mounted on the slide frame 361. The ball screw 34 is screwed to the slider 362. The lower end of the float 23 passes through the sliding plate 33 and the support plate 32 in sequence and is fixedly connected to the slider 362.

[0032] During installation, the base 11 is first fixed in the seawater using anchors. The seawater generates buoyancy, causing the lower float 1 and upper float 2 to float on the sea surface. The float body 21 can move up and down along the slide cylinder 12 under the action of waves. The float body 21 drives the support frame 22 and the float rod 23 to move synchronously. The float rod 23 drives the slider 362 to move up and down in a linear motion, thereby converting the linear motion of the slider 362 into the rotational motion of the ball screw 34, which in turn drives the generator 35 shaft to rotate, thus realizing the generation of electricity by the generator 35.

[0033] like Figure 1 , 4As shown, the connecting component 4 in this embodiment includes an upper plate 41, a lower plate 42, a pair of ball seat assemblies 43, and a ball stick 44. The upper plate 41 is fixed to the top of the support frame 22, and a ball seat assembly 43 is fixedly connected to the lower part of the upper plate 41. The lower plate 42 is fixed to the upper end of the float 23, and another ball seat assembly 43 is fixedly connected to the upper part of the lower plate 42. The two ball seat assemblies 43 are arranged opposite to each other, and the axes of the two ball seat assemblies 43 are coaxial with the axis of the slide cylinder 12. The two ends of the ball stick 44 are respectively hinged to the corresponding ball seat assembly 43.

[0034] like Figure 7 As shown, the ball seat assembly 43 includes a shell body 431 and a ball sleeve 432. The ball sleeve 432 includes two hemispherical sleeves 4321 of the same size and structure. Each hemispherical sleeve 4321 is provided with a recessed hemispherical portion 4322. The shell body 431 is provided with an installation port 4311 for placing the hemispherical sleeves 4321. A through hole 4312 is provided on the side of the shell body 431 opposite to the installation port 4311. The two hemispherical sleeves 4321 are fitted into the inner cavity of the shell body 431.

[0035] like Figure 7 , 8 As shown, the cue stick 44 includes a body 441 and ball heads 442 of the same size that are fixedly connected to both ends of the body 441. The cavity formed by the hemispherical parts 4322 of the two hemispherical sleeves 4321 is hinged to the corresponding ball heads 442.

[0036] like Figure 8 As shown, in order to facilitate the installation and maintenance of the ball seat assembly 43, the rod body 441 includes a first rod body 4411 and a second rod body 4412. The first rod body 4411 is provided with a screw, and the second rod body 4412 is provided with a screw hole adapted to the screw. The first rod body 4411 and the second rod body 4412 are coaxial after being threaded together.

[0037] When assembling the ball seat assembly 43, firstly, separate the first rod 4411 and the second rod 4412. Then, insert the ball head 442 into the two opposing hemispheres 4322. The first rod 4411 and the second rod 4412 pass through the through holes 4312 of the corresponding shell bodies 431 from the inside out, and the two hemisphere sleeves 4321 are embedded into the inner cavity of the corresponding shell bodies 431. Then, thread the first rod 4411 and the second rod 4412 together. Position the mounting port 4311 of one shell body 431 towards the upper plate 41 and fix the shell body 431 to the upper plate 41. Position the mounting port 4311 of the other shell body 431 towards the lower plate 42 and fix the shell body 431 to the lower plate 42. Thus, the installation of the ball seat assembly 43 is completed.

[0038] By setting the ball seat assembly 43, when the float body 21 floats up and down along the slide 12 under the action of the waves, the float body 21 is subjected to forces from the waves in multiple directions. Due to the limitation of assembly precision, the axis of the float body 21 will deviate from the axis of the slide 12 to varying degrees. The ball seat assembly 43 can provide sufficient deviation for the float body 21, thereby bearing the lateral impact force of the waves, reducing the friction between the float body 21 and the slide 12, and improving the power generation efficiency of the generator 35.

[0039] like Figure 3 , 4 The slide 361 in this embodiment includes a support beam 3611 and a slide rail 3612. The support beam 3611 is made of I-beam. The upper and lower ends of the support beam 3611 are fixedly connected to the base plate 31 and the support plate 32, respectively. The slide rail 3612 is fixedly connected to the inner side of the support beam 3611. The slide rail 3612 is parallel to the ball screw 34, and the slider 362 is slidably mounted on the slide rail 3612.

[0040] In another embodiment, the slide 361 includes two slides 361, which are symmetrically distributed on both sides of the ball screw 34. The slide rails 3612 on the two slides 361 are arranged opposite to each other, and the slider 362 slides between the two slide rails 3612. The two slides 361 can improve the force conditions of the slider 362 and improve the stability of the slider 362 sliding.

[0041] like Figure 3 As shown, in one embodiment, there are two floats 23, symmetrically distributed on both sides of the ball screw 34. Both floats 23 are parallel to the ball screw 34. The slide plate 33 is provided with a ball sleeve 331 adapted to the corresponding float 23, and the float 23 slides in the corresponding ball sleeve 331. The ball sleeve 331 can reduce the friction of the float 23 when it moves up and down relative to the slide plate 33, thereby improving the power generation efficiency of the generator 35.

[0042] like Figure 2-5 As shown, in one embodiment, a braking device 5 is provided inside the slide cylinder 12. The braking device 5 includes a sliding plate 51, a mounting bracket 52, a brake pad 53, a booster block 54, and a first hydraulic cylinder 55 that drives the sliding plate 51 to move toward the brake pad 53. The first hydraulic cylinder 55 is located outside the support beam 3611 and is opposite to the slide rail 3612. The first hydraulic cylinder 55 is fixedly connected to the base plate 31.

[0043] like Figure 3 , 9As shown, the mounting bracket 52 includes a mounting plate 521 and two connecting plates 522 perpendicular to it. The two connecting plates 522 are arranged opposite to each other. The mounting plate 521 is fixedly connected to the slider 362. The two connecting plates 522 are located on both sides of the support beam 3611. Brake pads 53 are fixedly connected to the inner sides of the two connecting plates 522 respectively. The two brake pads 53 are distributed on both sides of the first hydraulic cylinder 55. A sliding plate 51 is provided between the first hydraulic cylinder 55 and the corresponding brake pad 53. The upper and lower ends of the sliding plate 51 are slidably connected to the base plate 31 and the support plate 32 respectively. The 51 can move closer to or further away from the corresponding brake pad 53. Two booster blocks 54 are distributed on both sides of the first hydraulic cylinder 55. The booster blocks 54 are fixedly connected to the inner side of the corresponding sliding plate 51. Each of the two booster blocks 54 has an inclined portion below it that matches the push rod of the first hydraulic cylinder 55. When the push rod of the first hydraulic cylinder 55 abuts against the two inclined portions, it pushes the two booster blocks 54 to both sides. The two booster blocks 54 respectively drive the corresponding sliding plate 51 to abut against the corresponding brake pad 53, thereby limiting the speed of the slider 362. The braking device 5 can limit the movement speed of the float body 21, preventing damage to the device caused by excessively fast movement of the float body 21. The generator 35 is located on the upper part of the inner side of the slide cylinder 12, making it easier to maintain and service.

[0044] To improve the stability and safety of the braking device 5, a second hydraulic cylinder 56 is fixedly connected below the support plate 32. The second hydraulic cylinder 56 is positioned opposite to the first hydraulic cylinder 55 and is located between two sliding plates 51. Boosting blocks 54 are provided on both sides of the push rod of the second hydraulic cylinder 56. The two boosting blocks 54 are fixedly connected to the corresponding sliding plates 51. An oil pump 57 is fixedly connected above the support plate 32. The first hydraulic cylinder 55 and the second hydraulic cylinder 56 are respectively connected to the oil pump 57. The thrust of the first hydraulic cylinder 55 and the second hydraulic cylinder 56 can be synchronously controlled by the oil pump 57 to ensure the balanced force on the two sliding plates 51 and ensure the stable operation of the braking device 5.

[0045] To reduce friction during the movement of the ball screw 34, a support plate 32 is fixedly connected to the fixed side 321 of the ball screw, and a base 11 is fixedly connected to the supporting side 311 of the ball screw. The ball screw 34 is rotatably connected to both the fixed side 321 and the supporting side 311. A slider 362 is fixedly connected to the ball screw nut 3621, which is screwed onto the ball screw 34. For ease of installation and maintenance, the generator 35 is connected to the ball screw 34 via a coupling.

[0046] To improve the load-bearing capacity of the power generation unit, a connecting cylinder 7 is provided between the slide cylinder 12 and the base 11. The lower end of the connecting cylinder 7 is fixedly connected to the base 11, and the upper end of the connecting cylinder 7 is detachably connected to the slide cylinder 12. Specifically, the upper end of the connecting cylinder 7 and the slide cylinder 12 are detachably connected by a flange. A sealing gasket is provided between the flanges to prevent seawater from entering the slide cylinder 12 and effectively protect the safety of the power generation unit 3.

[0047] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A seawater power generation device, characterized in that, The system includes a lower float, an upper float, and a power generation unit. The lower float includes a base and a sliding cylinder, with the sliding cylinder located above the base. The upper float includes a float body, a support frame, and a float rod. The float body has a through hole adapted to the sliding cylinder and slides on the sliding cylinder. The support frame is fixedly connected to the upper part of the float body, and the top of the support frame is connected to the upper end of the float rod via a connecting assembly. The power generation unit includes a base plate, a support plate, a sliding plate, a ball screw, a generator, and a sliding mechanism. The sliding plate and the base plate are respectively connected to the top and bottom of the sliding cylinder. The support plate is located below the sliding plate and is fixedly connected to the inner wall of the sliding cylinder. A ball screw is rotatably connected between the base plate and the support plate. A generator is fixedly connected above the support plate. The generator's shaft is coaxially connected to the ball screw. The sliding mechanism includes a slide and a slider. The slide is located between the base plate and the support plate. The slider slides on the slide. The ball screw is screwed to the slider. The lower end of the float passes through the slide plate and the support plate in sequence and is fixedly connected to the slider. The float body can move up and down along the slide under the action of waves. The float body drives the float to move synchronously, thereby converting the linear motion of the float into the rotational motion of the generator shaft, realizing the generator's power generation. The connecting assembly includes an upper plate, a lower plate, a pair of ball seat assemblies, and a ball stick. The upper plate is fixed to the top of the support frame, and a ball seat assembly is fixedly connected below the upper plate. The lower plate is fixed to the upper end of the float, and another ball seat assembly is fixedly connected above the lower plate. The two ball seat assemblies are the same size and structure and are arranged opposite to each other. The two ends of the ball stick are respectively hinged to the corresponding ball seat assemblies. The ball seat assembly includes a shell body and a ball sleeve. The ball sleeve includes two hemispherical sleeves of the same size and structure. Each hemispherical sleeve has a recessed hemispherical part. The shell body has an installation port for placing the hemispherical sleeves. A through hole is provided on the side of the shell body opposite to the installation port. The two hemispherical sleeves are fitted into the inner cavity of the shell body. The ball stick includes a rod body and ball heads fixedly connected to both ends of the rod body. The cavity formed by the hemispherical parts of the two hemispherical sleeves is hinged to the corresponding ball heads. The carriage includes a support beam and a slide rail. The upper and lower ends of the support beam are fixedly connected to the base plate and the support plate, respectively. The slide rail is fixedly connected to the inner side of the support beam. The slide rail is parallel to the ball screw, and the slider slides on the slide rail. The floats include two floats, which are symmetrically distributed on both sides of the ball screw. Both floats are parallel to the ball screw. The slide plate is provided with ball sleeves that are adapted to the corresponding floats, and the floats slide in the corresponding ball sleeves. The slide cylinder is equipped with a braking device, which includes a sliding plate, a mounting bracket, brake pads, booster blocks, and a first hydraulic cylinder that drives the sliding plate to move towards the brake pads. The first hydraulic cylinder is located outside the support beam and fixedly connected to the base plate. The mounting bracket includes a mounting plate and two connecting plates perpendicular to it. The mounting plate is fixedly connected to the slider. The two connecting plates are located on both sides of the support beam. Brake pads are fixedly connected to the inner sides of the two connecting plates respectively. The two brake pads are distributed on both sides of the first hydraulic cylinder. A sliding plate is provided between the first hydraulic cylinder and the corresponding brake pad. The upper and lower ends of the sliding plate are slidably connected to the base plate and the support plate respectively. The booster blocks include two and are distributed on both sides of the first hydraulic cylinder. The booster blocks are fixedly connected to the inner sides of the corresponding sliding plates. Each of the two booster blocks has an inclined part adapted to the push rod of the first hydraulic cylinder. When the push rod of the first hydraulic cylinder abuts against the two inclined parts, the two booster blocks respectively drive the corresponding sliding plate to abut against the corresponding brake pad, thereby limiting the speed of the slider. The support plate is fixedly connected to the fixed side of the ball screw, the base is fixedly connected to the supporting side of the ball screw, the ball screw is rotatably connected to both the fixed side and the supporting side of the ball screw, the slider is fixedly connected to the ball screw nut, the ball screw nut is screwed to the ball screw, and the generator is connected to the ball screw through a coupling.

2. The seawater power generation device as described in claim 1, characterized in that, The rod body includes a first rod body and a second rod body. The first rod body is provided with a screw rod, and the second rod body is provided with a screw hole adapted to the screw rod. The first rod body and the second rod body are coaxial after being threaded together.

3. The seawater power generation device as described in claim 1, characterized in that, The slide includes two slides, which are symmetrically distributed on both sides of the ball screw, and the slider is slidably disposed between the two slide rails.

4. The seawater power generation device as described in claim 1, characterized in that, A second hydraulic cylinder is fixedly connected below the support plate. The second hydraulic cylinder is located between two sliding plates. Boosting blocks are provided on both sides of the second hydraulic cylinder. The two boosting blocks are fixedly connected to the corresponding sliding plates. An oil pump is fixedly connected above the support plate. The first hydraulic cylinder and the second hydraulic cylinder are respectively connected to the oil pump.

5. The seawater power generation device as described in claim 1, wherein a connecting cylinder is provided between the sliding cylinder and the base, the lower end of the connecting cylinder is fixedly connected to the base, and the upper end of the connecting cylinder is detachably connected to the sliding cylinder.

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