CN101832216B

CN101832216B - Ocean energy collection method and device

Info

Publication number: CN101832216B
Application number: CN201010152788XA
Authority: CN
Inventors: 凌长明; 李军; 徐青; 邓朝晖; 阮小龙; 郑章靖
Original assignee: Guangdong Ocean University
Current assignee: Guangdong Ocean University
Priority date: 2010-04-15
Filing date: 2010-04-15
Publication date: 2012-01-04
Anticipated expiration: 2030-04-15
Also published as: CN101832216A

Abstract

A method and device for gathering ocean energy. A high-level water storage tank is built on the seashore, and the high-level water storage tank is higher than the sea level by a certain height. Utilize the tidal difference or wave energy to pass through the constriction channel, the seawater of the sea is introduced into the high-level storage tank through the seawater ascending channel. The energy-gathering device is installed on the ground, and the device is connected to the high-level reservoir through the seawater inlet system. The device includes seawater inlet and outlet systems, seawater delivery system to be boosted, booster equipment, etc. Through the seawater inlet system of the energy gathering device, seawater is introduced into the device, and the energy gathering equipment is driven to produce high-pressure seawater, which can be used for seawater desalination or power generation. The energy-gathering equipment and drainage equipment are integrated, and the coaxial series energy-gathering equipment can be adjusted according to the requirements of the working conditions. The main function of the drainage system of the device is to discharge the working seawater in the energy gathering device to the sea to ensure the continuous operation of the device.

Description

Ocean energy collection method and device

Technical field

The present invention relates to a kind of ocean energy collection method and device.

Technical background

In the face of serious day by day energy scarcity and the environmental pollution that is on the rise, people are renewable for exploitation, clear energy sources is technological more and more pays close attention to, and ocean energy provides huge energy sources for we mankind.For the energy that guarantees necessary for human obtains stable and lasting supply, countries in the world all make great efforts to make energy resource structure from single conventional energy resource to multiple new energy transition.Wide ocean accounted for earth surface long-pending 70%, concentrated 97% the water yield, containing a large amount of energy, comprising wave energy, tidal energy, thermal gradient energy, salt error can etc.(1) wave energy is meant kinetic energy and the potential energy that the ocean surface wave is had. the energy of wave and wave height square, cycle of motion of wave and the width of meeting the corrugated be directly proportional; In fact the size of wave power is also relevant with many factors such as wind speed, wind direction, the time of drying continuously, flow velocitys, so wave energy is the least stable a kind of energy of energy in the marine energy.(2) the present application technology comparative maturity of tidal energy, because existing a lot of years of its research is historical, many power station development projects of Britain, France, Canada and Russia and design demonstration have reached decades, the longest existing seventy or eighty years.The sixties in 20th century, first commercial power station was built up in France; Tidal power generation seventies technology begins to get into the production of large-scale commercial applications property and is purpose, is the scientific research demonstration stage of target to reduce cost, and the tidal power generation technology is walked in the ocean energy development technique in prostatitis.(3) thermal gradient energy of sea water is meant the heat energy of water temperature difference between self-restraint surface seawater and the deep sea water, is a kind of important form of ocean energy.The sea surface temperature of low latitudes is higher, has temperature difference with deep layer cold water, and is storing temperature difference heat energy, and its energy is directly proportional with the size and the water yield of the temperature difference.The greatest difficulty of thermal gradient energy utilization is a temperature difference size, and energy density is low, and its efficient only has about 3%, and heat exchange area is big, and construction cost is high, and various countries are still in trying to explore at present.(4) the chemical potential difference between the seawater that salt error can be meant between seawater and the fresh water or two kinds of salt concentrations are different can, be the ocean energy that occurs with the chemical energy form.The main existence and the He Hai jointing place.Simultaneously, the salt lake and the underground salt mine in the abundant area of fresh water also can utilize the salt error ability.Salt error can be the maximum a kind of renewable energy sources of energy density in the ocean energy.But generally, research that can this new energy to salt error also is in the laboratory experiment level, also has long distance from Demonstration Application.Present exploitation of marine energy situation; Though the energy of ocean energy is very big; But can be considerably less by what people utilized, the ocean energy energy conversion device kind that people designed is very many, but can also not have by really effective device; Reason just is that the energy flux density of ocean energy is smaller, and ocean energy has unsettled characteristic.The method of typically ocean energy being carried out cumulative has wave energy or tidal energy utilization tapered channels that seawater is delivered to the method that certain altitude forms potential difference.But the height that utilizes this method to promote seawater is limited, therefore only relies on the seawater potential difference of lifting height to come the cumulative method also to be nowhere near.Analyze current ocean energy development and utilization situation and be not difficult to find out, want to make the smaller ocean energy of energy flux density to increase substantially energy density, it is most important to the development and use ocean energy to design a kind of effective cumulative device.

Summary of the invention

The purpose of this invention is to provide a kind of ocean energy collection method and device, utilize the high-order water of ocean energy formation and the water-head between ground, produce high pressure water, be used for reverse osmosis seawater desalting or generating etc. through the cumulative device.

The present invention builds a high-level reservoir by the sea, and high-level reservoir exceeds the sea level certain altitude.Utilize oceanic tide difference or wave energy through constricted channel, the seawater in sea is introduced high-level reservoir.This ocean energy collection device is fixedly mounted on ground, and device comprises seawater water inlet and outlet system, salt water system to be boosted, energy collection devices, seawater releasing system etc.Through the seawater water inlet system of device, with the seawater imported unit in the high-level reservoir, and drive energy collection devices, energy collection devices is made high pressure sea water, and high pressure sea water can be used for desalination of sea water or generating.The seawater that drainage system is mainly used in the discharge energy collection devices and other equipment are interior is with the continuous operation of assurance device.

Described device comprises seawer inlet and goes out port system, salt water system to be boosted, energy collection devices, seawater drainage system; Seawater water inlet system through device; With the seawater imported unit in the high-level reservoir; And the driving energy collection devices, energy collection devices is made high pressure sea water, and high pressure sea water can be used for desalination of sea water or generating.The seawater that drainage system is mainly used in the discharge energy collection devices and other equipment are interior is with the continuous operation of assurance device.

The seawater of high-level reservoir [41] all is through in seawer inlet [1] inletting device in described seawater water inlet and the outlet system, and the operation seawater in the device all is to be discharged in the sea through seawater exhaust port [33].

The waiting of the described device that the is installed on ground salt water system that boosts is made up of seawater water intake, valve, sea water filter device, seawater holding vessel, piston cylinder, and the seawater water intake is connected with valve, sea water filter device, left side valve, seawater holding vessel, valve, piston cylinder, valve and high pressure sea water holding vessel through pipeline successively; The seawater water intake is connected with valve, sea water filter device, right side valve, seawater holding vessel, valve, piston cylinder, valve and high pressure sea water holding vessel through pipeline successively.

Before described device brings into operation, utilize the differential static pressure of high-level reservoir, in the seawater leading device, and, send at last in piston cylinder and the high pressure sea water holding vessel through further filtering; After device brings into operation, guarantee that a piston cylinder and another piston cylinder are full of seawater in the Cheng Qian of boosting.

The described energy collection devices that is installed on the device on ground mainly is made up of valve, piston cylinder, piston, connecting rod; Big piston that is used to boost and small piston are together in series by the connecting rod coaxial rigid; Big piston is back and forth movement in both ends of the surface all are the piston cylinder that seals; And the big piston cylinder is divided into B chamber, C chamber, D chamber, E chamber, F chamber, G chamber respectively, small piston is at one end done corresponding coaxial back and forth movement in the piston cylinder of opening.The seawater of high-level reservoir is introduced big piston cylinder C chamber, E chamber, G chamber respectively through valve, sea water filter device, valve; Close respective valves this moment; Because the very big pressure action that water-head causes is in big piston; Pass to small piston through mechanical function, make the seawater in the small piston cylinder reach bigger pressure, make high pressure sea water; Corresponding with it; Big piston that is used to boost and small piston are together in series by the connecting rod coaxial rigid; Big piston is back and forth movement in both ends of the surface all are the piston cylinder that seals; And the big piston cylinder is divided into B chamber, C chamber, D chamber, E chamber, F chamber, G chamber respectively,, small piston is at one end done corresponding coaxial back and forth movement in the piston cylinder of opening.The seawater of high-level reservoir is introduced the big piston cylinder respectively and is divided into B chamber, D chamber, F chamber respectively through valve, sea water filter device, valve; Close respective valves this moment; Because the very big pressure action that water-head causes is in big piston; Pass to small piston through mechanical function, make the seawater in the small piston cylinder reach bigger pressure, make high pressure sea water.

The described energy collection devices that is installed on the device on ground can be adjusted high pressure sea water pressure through the quantity that increases or reduce series connection coaxial piston cylinder according to the requirement of operating mode.

The described drainage equipment that is installed on the device on ground mainly is made up of corresponding cavity, valve and the connecting pipe of piston, piston cylinder; The piston that is used to discharge the operation seawater is being together in series by the connecting rod coaxial rigid; Big piston is back and forth movement in both ends of the surface all are the piston cylinder of sealing, and the big piston cylinder is divided into is divided into B chamber, C chamber, D chamber, E chamber, F chamber, G chamber respectively.The seawater of high-level reservoir is introduced respectively before big piston cylinder C chamber, E chamber, the G chamber through valve, sea water filter device, valve; Close inlet valve and C chamber, the E chamber of all piston cylinders, the water discharging valve in G chamber; Open the water discharging valve in B chamber, D chamber, F chamber; Make operation seawater in B chamber, D chamber, the F chamber through valve with the pipeline of certain slope is arranged, under action of gravity, be discharged in the sea; Corresponding with it; The seawater of high-level reservoir is introduced respectively before big piston cylinder B chamber, D chamber, the F chamber through valve, sea water filter device, valve; Close inlet valve and B chamber, the D chamber of all piston cylinders, the water discharging valve in F chamber; Open the water discharging valve in C chamber, E chamber, G chamber, make operation seawater in C chamber, E chamber, the G chamber through valve with the pipeline of certain slope is arranged, under action of gravity, be discharged in the sea.

The energy collection devices that the present invention adopts is made high pressure sea water; Neither need high-pressure service pump; Need not form very high water-head yet; Only need utilize ocean energy that the power source of the water-head of an above tide as device is provided, and the seawater of operation and residue concentrated seawater be without any need for additional power, discharge naturally.In addition, energy collection devices and drainage equipment are one, can transform each other, and can increase or reduce the number of series connection coaxial piston cylinder according to the requirement of operating mode, adjust seawater pressure.Energy collection devices adopts symmetric design, so only need valve is carried out switch control, device just can move continuously.

Description of drawings

Fig. 1 is apparatus of the present invention structural representations;

Fig. 2 is apparatus of the present invention structure plan view.

Embodiment

The ocean energy collection method that the present invention relates to is following the realization:

Build a high-level reservoir on the seashore limit, and high-level reservoir exceeds the sea level certain altitude.Utilize ocean energy, the seawater in sea is introduced high-level reservoir through the seawater rising passway.The ocean energy collection device is fixedly mounted on ground, and device links to each other with high-level reservoir through the seawater water inlet system.There is energy collection devices that seawater is boosted in the device, and the adjustable size of boosting.Force balance principle after energy collection devices is utilized pascal's principle and changed area amplifies seawater pressure as requested and produces high pressure sea water.Device also comprises drainage system, and it mainly acts on is that the seawater in the cumulative device is discharged in the sea through drainage system, and assurance device moves continuously.

Below in conjunction with reverse osmosis seawater desalting the effect of cumulative device and concrete implementation are described as an example:

As shown in Figure 1, high-level reservoir 41 48 certain altitudes above ground level are as about 5 meters.Utilize ocean energy,, the seawater in the sea 47 is introduced high-level reservoir 41 through seawater rising passway 40 like tidal energy and wave energy.Apparatus of the present invention are fixedly installed in ground 48, and after the normal operation of this system, device is introduced seawater from high-level reservoir 41 through seawer inlet 1, and the seawater part of introduction is used to make fresh water, and a part is used to drive energy collection devices.The remaining concentrated seawater of desalination of sea water is discharged into through concentrated seawater floss hole 34 and seawer outlet 33 respectively with the interior operation seawater of device in the sea.

As shown in Figure 2, device did not have seawater in the device before operation for the first time, and all valves are in closed condition.When device will move the time, at first open valve 2, valve 37 and valve 32, open valve 2 and be in order to let the seawater (static pressure of about 5 meter water columns) in the wet pit get in the sea water filter device 3 by seawer inlet 1; Opening valve 37 is to discharge immediately for the fresh water that lets system's operation produce afterwards; Opening valve 32 is in order to let the concentrated seawater after desalinating discharge smoothly.Valve 2 keeps normally open with valve 37 in the running of device, valve 2 is water main valves into, the water inlet main valve is set mainly is to use when installing maintenance.

Afterwards, open valve 4 and valve 6, let sea water filter device 3 interior seawater get in seawater holding vessel 5 and the seawater holding vessel 7; At this moment there is not seawater in the piston cylinder 42; Open valve 10, let seawater in the seawater holding vessel 5 get into and be full of piston cylinder 42, open valve 9 and valve 31; Make seawater be full of high pressure sea water holding vessel 8; When seawater is full of seawater holding vessel 5 with high pressure sea water holding vessel 8, throttle down 10, so preparatory work is accomplished.

Open valve 14, valve 17, valve 20, valve 25, valve 27, valve 29; Make the seawater (static pressure of about 5 meter water columns) with a constant static-pressure by C chamber, the E chamber of piston cylinder 44 and the G chamber of piston cylinder 45 of seawer inlet 1 through filter 3 entering piston cylinders 43, at this moment valve 12, valve 15, valve 18, valve 26, valve 28, valve 30 are closed.When seawater got into the G chamber of E chamber and piston cylinder 45 of C chamber, piston cylinder 44 of piston cylinder 43, seawater began to promote piston 13, piston 16, piston 19 to left movement.Piston 13, piston 16, piston 19 and piston 21 are cascaded (if need ever add the series connection piston cylinder identical with piston cylinder 44) through connecting rod 39; Promote the seawater in the piston 11 beginning compression piston cylinders 42; Because the area of piston 13, piston 16, piston 19 is identical; And be about 21 times of piston 11 areas; So the seawater pressure in the piston cylinder 42 can reach about 3 * 21 times of seawater pressure in the C chamber of piston cylinder 43 (if the tandem piston cylinder is n, then piston cylinder 42 interior seawater pressure can reach about n * 21 times of the seawater pressure in the C chamber of piston cylinder 43).When the seawater pressure in the piston cylinder 42 reaches the needed hydraulic pressure of desalination of sea water; Because valve 9 is all opened with valve 31; Seawater pressure in the high pressure sea water holding vessel 8 also reaches the seawater pressure in the piston cylinder 42; High pressure sea water gets into reverse osmosis desalination device 36, and the concentrated seawater after the desalination is discharged by concentrated seawater floss hole 34, and fresh water is transported to the fresh water storage device by water outlet 38.

At piston 13, piston 16, piston 19, piston 21 and connecting rod 39 together in left movement; Open valve 22 and valve 23; Make seawater (static pressure of about 5 meter water columns) get into piston cylinder 46 and high pressure sea water holding vessel 24 through filter 3, seawater holding vessel 7, and make seawater be full of piston cylinder 46 and high pressure sea water holding vessel 24 by seawer inlet 1 with a constant static-pressure.

When piston 11 arrives piston cylinder 42 low order ends; While throttle down 9, valve 14, valve 17, valve 20, valve 25, valve 27, valve 29, valve 22; Open valve 26, valve 28, valve 30 afterwards simultaneously; Make the seawater in the G chamber of E chamber and piston cylinder 45 of C chamber, piston cylinder 44 of piston cylinder 43 be discharged to fully in the sea by seawer outlet 33; Open valve 10, valve 12, valve 15, valve 18 afterwards; Make the seawater (static pressure of about 5 meter water columns) with a constant static-pressure get into piston cylinders 42, the B chamber of piston cylinder 43, the D chamber of piston cylinder 44 and the F chamber of piston cylinder 45 by seawer inlet 1 through filter 3, seawater begins to promote piston 13, piston 16, piston 19 and moves right.Piston 13, piston 16, piston 19 and piston 11 are cascaded (if need ever add the series connection piston cylinder identical with piston cylinder 44) through connecting rod 39; Promote the seawater in the piston 21 beginning compression piston cylinders 46; Because the area of piston 13, piston 16, piston 19 is identical; And be about 21 times of piston 21 areas; So the seawater pressure in the piston cylinder 46 can reach about 3 * 21 times of seawater pressure in the B chamber of piston cylinder 43 (if the tandem piston cylinder is n, then piston cylinder 46 interior seawater pressure can reach about n * 21 times of the seawater pressure in the B chamber of piston cylinder 43).When the seawater pressure in the piston cylinder 46 reaches the needed hydraulic pressure of desalination of sea water; Because valve 23 is all opened with valve 35; Seawater pressure in the high pressure sea water holding vessel 24 also reaches the seawater pressure in the piston cylinder 46; High pressure sea water gets into reverse osmosis desalination device 36, and the concentrated seawater after the desalination is discharged by concentrated seawater floss hole 34, and fresh water is transported to the fresh water storage device by water outlet 38.

When piston 21 arrives piston cylinder 46 low order ends; Throttle down 23, valve 10, valve 12, valve 15, valve 18, valve 26, valve 28, valve 30, valve 35; Open valve 25, valve 27, valve 29 afterwards simultaneously; Make the seawater in the F chamber of D chamber and piston cylinder 45 of B chamber, piston cylinder 44 of piston cylinder 43 just be discharged to fully in the sea by seawer outlet 33; Open valve 9, valve 14, valve 17, valve 20 afterwards and make seawater (static pressure of about 5 meter water columns) get into piston cylinders 46, the C chamber of piston cylinder 43, the E chamber of piston cylinder 44 and the G chamber of piston cylinder 45 through filter 3, promote piston 13, piston 16, piston 19 to left movement by seawer inlet 1 with a constant static-pressure.So far, complete cyclic process of this device finishes.As long as the above circulation of repetition is output fresh water continuously just.

Claims

1. A marine energy gathering device, characterized in that the device includes a seawater inlet system, a seawater delivery system to be boosted, energy gathering equipment, and a seawater drainage system, and the high-level water storage tank [41 ] seawater is introduced into the ocean energy gathering device fixedly installed on the ground [48], and drives the gathering equipment. The gathering equipment produces high-pressure seawater, which can be used for seawater desalination or power generation. and other equipment to ensure the continuous operation of the device, the seawater delivery system to be boosted by the energy gathering device installed on the ground [48] consists of seawater inlet [1], first valve [2], seawater filter [3] , the second valve [4], the first seawater storage tank [5], the third valve [10], the first piston cylinder [42], the fourth valve [9], the fifth valve [6], the second seawater storage tank [7], the sixth valve [22], the second piston cylinder [46] and the seventh valve [23], the seawater inlet [1] passes through the pipeline with the first valve [2], seawater filter [3], The second valve [4], the first seawater storage tank [5], the third valve [10], the first piston cylinder [42], the fourth valve [9] and the first high-pressure seawater storage tank [8] are connected in sequence; The seawater inlet [1] passes through the pipeline and the first valve [2], seawater filter [3], the fifth valve [6], the second seawater storage tank [7], the sixth valve [22], the second piston cylinder [ 46], the seventh valve [23] and the second high-pressure seawater storage tank [24] are connected in sequence.

2. The ocean energy gathering device according to claim 1, characterized in that in the seawater inlet and seawater outlet systems, the seawater in the high-level storage tank enters the energy gathering device through the seawater inlet [1], and the seawater gathering The seawater that can operate in the device is all discharged into the sea through the seawater outlet [33].

3. The marine energy gathering device according to claim 1, characterized in that before the energy gathering device starts to operate, the seawater is introduced into the device by using the static pressure difference between the high-level reservoir [41] and the ground [48], and the filter [3], into the first piston cylinder [42], the second piston cylinder [46], the first high-pressure seawater storage tank [8], and the second high-pressure seawater storage tank [2]; after the device starts running, ensure First piston cylinder [42] and second piston cylinder [46] are full of water before the pressurization process.

4. The ocean energy gathering device according to claim 1 or 2, characterized in that the energy gathering device installed on the ground [48] is mainly composed of the fourth valve [9], the eighth valve [12], the ninth valve The valve [14], the tenth valve [15], the eleventh valve [17], the twelfth valve [18], the thirteenth valve [20], the fourteenth valve [25], the fifteenth valve [26] ], the sixteenth valve [27], the seventeenth valve [28], the eighteenth valve [29], the nineteenth valve [30], the seventh valve [23], the third piston cylinder [43], the first Four-piston cylinder [44], fifth piston cylinder [45], first piston [11], second piston [13], third piston [16], fourth piston [19], fifth piston [21], The connecting rod [39] is composed of the second piston [13], the third piston [16], the fourth piston [19], the first piston [11] and the fifth piston [21] used for boosting pressure. Rod [39] is rigidly connected, and the second piston [13], the third piston [16], and the fourth piston [19] are respectively closed at both ends of the third piston cylinder [43], the fourth piston cylinder [ 44], reciprocating movement in the fifth piston cylinder [45], divide the third piston cylinder [43] into B cavity, C cavity, divide the fourth piston cylinder [44] into D cavity, E cavity, divide the fifth Piston cylinder [45] is divided into F chamber, G chamber respectively, and the first piston [11], the fifth piston [21] are respectively in the first piston cylinder [42] of one end opening and the second piston cylinder [46] to do corresponding The coaxial back-and-forth movement of the high-level reservoir [41] passes the seawater inlet [1] through the first valve [2], seawater filter [3], ninth valve [14], eleventh valve [17] ] and the thirteenth valve [20] are respectively introduced into C cavity, E cavity and G cavity, and at this time, the fifteenth valve [26], the seventeenth valve [28], the nineteenth valve [30] and the eighth valve are closed [12], the tenth valve [15], the twelfth valve [18], open the fourteenth valve [25], the sixteenth valve [27], the eighteenth valve [29], due to the water level difference causes a relatively Large pressure acts on the second piston [13], the third piston [16], and the fourth piston [19] at the same time, making them move toward the first piston [11] side, because the second piston [13], the third piston [16] and the fourth piston [19] are coaxially connected in series, so the forces acting on them are superimposed and transmitted to the first piston [11] through the connecting rod [39], so that the first piston cylinder [42] The seawater in ] reaches a higher pressure to produce high-pressure seawater; correspondingly, the fifteenth valve [26], the seventeenth valve [28], and the nineteenth valve [30] are first opened, and the chamber C, E The working seawater in cavity and G cavity is completely discharged, and then the seawater in the high-level reservoir [41] is passed through the seawater inlet [1] through the first valve [2], seawater filter [3], eighth valve [12], The tenth valve [15] and the twelfth valve [18] are introduced into chamber B, chamber D and chamber F respectively, and the fourteenth valve is closed at this time door [25], the sixteenth valve [27], the eighteenth valve [29], the ninth valve [14], the eleventh valve [17], and the thirteenth valve [20]. Large pressure acts on the second piston [13], the third piston [16], and the fourth piston [19] at the same time, making them move toward the fifth piston [21] side, because the second piston [13], the third piston [16], the fourth piston [19] are coaxially connected in series, so the forces acting on them are superimposed and transmitted to the fifth piston [21] through the connecting rod [39], so that the second piston cylinder [46] ] The seawater in ] reaches higher pressure, making high-pressure seawater.

5. The marine energy gathering device according to claim 1 or 2, characterized in that the drainage equipment of the energy gathering device installed on the ground [48] is mainly composed of the fourteenth valve [25], the fifteenth valve [26] , the sixteenth valve [27], the seventeenth valve [28], the eighteenth valve [29], the nineteenth valve [30], the third piston cylinder [43], the fourth piston cylinder [44], the first Five-piston cylinder [45], connecting rod [39], seawater outlet [33] and connecting pipeline are composed. When the first piston [11] reaches the leftmost end, the fourteenth valve [25] and the sixteenth valve [27] are closed. ], the eighteenth valve [29], the ninth valve [14], the eleventh valve [17], the thirteenth valve [20], open the fifteenth valve [26], the seventeenth valve [28], The nineteenth valve [30] makes the seawater in C chamber, E chamber and G chamber respectively pass through the fifteenth valve [26], the seventeenth valve [28], the nineteenth valve [30] and the The pipeline is discharged into the sea under the action of gravity, and correspondingly, when the fifth piston [21] reaches the rightmost end, the fifteenth valve [26], the seventeenth valve [28], and the nineteenth valve [30] are closed , the eighth valve [12], the tenth valve [15], the twelfth valve [18], open the fourteenth valve [25], the sixteenth valve [27], the seventeenth valve [29], so that B The operating seawater in chamber, D chamber and F chamber respectively pass through the fourteenth valve [25], the sixteenth valve [27], the eighteenth valve [29] and the pipeline with a certain slope, and are discharged into the sea under the action of gravity .

6. The ocean energy gathering device according to claim 1 or 2, characterized in that the third piston cylinder [43], the fourth piston cylinder [44], the fifth Piston cylinder [45], first piston [11], second piston [13], third piston [16], fourth piston [19], fifth piston [21] are connected in series by connecting rod [39] and the energy-gathering system is integrated with the drainage system. If the working conditions change, increase or decrease the pressure of the seawater by increasing or decreasing the number of piston cylinders and matching pistons connected in series with the fourth piston cylinder [44].