Tidal thermal energy difference power generation device

Abstract

The invention discloses a tidal thermal energy difference power generation device, which relates to the field of power generation, and comprises a first dam, a second dam, a separation part, a water storage chamber, a thermal energy difference integrated power generation system, a controller and two side dams, a water storage one-way valve and a first water turbine are arranged in the water storage water inlet channel, a water storage water outlet channel communicated with the water storage reservoir is arranged at the bottom of the second dam, a drainage water outlet channel used for communicating shallow seawater with the drainage reservoir is arranged on the first dam, and a drainage one-way valve and a second water turbine are arranged in the drainage water outlet channel. The top of the second dam is provided with a drainage water inlet channel communicated with the drainage reservoir; the water storage chamber is communicated with deep seawater through a cold water pipe, and the deep seawater can enter the water storage chamber through the cold water pipe; the thermal energy difference integrated power generation system comprises a plurality of thermal energy difference power generation modules. The tidal thermal energy difference power generation device integrates tidal energy power generation and thermal energy difference power generation, and the power generation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of power generation, and in particular to a tidal thermal energy difference power generation device. Background Art

[0002] There are many ways to utilize ocean energy in the prior art. For example, tidal power generation is a technology that converts the kinetic energy generated by the rise and fall of ocean tides into electrical energy, and ocean thermal energy difference power generation is a technology that generates electricity by using the thermal energy generated by the temperature difference between the surface seawater and the deep seawater. However, the prior art often uses a separate tidal power station and a separate thermal energy difference power station to generate electricity, which makes the existing separate power stations have a single function and low power generation efficiency. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a tidal thermal energy difference power generation device, which integrates tidal energy power generation and thermal energy difference power generation, thereby improving power generation efficiency.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a tidal thermal energy difference power generation device, comprising a first dam, a second dam, a partition component, a water storage chamber, a thermal energy difference integrated power generation system, a controller and two side dams, one side of the first dam is used to contact with seawater, the other side of the first dam is provided with the second dam, the front and rear sides between the first dam and the second dam are connected by one of the side dams, the partition component divides the first dam, the second dam and the area between the two side dams into a water storage reservoir and a water discharge reservoir; the first dam is provided with a useful A water storage inlet channel for connecting shallow seawater and the water storage reservoir, a water storage check valve and a first turbine are arranged in the water storage inlet channel, a water storage outlet channel connected to the water storage reservoir is arranged at the bottom of the second dam, a water discharge outlet channel for connecting shallow seawater and the water discharge reservoir is arranged on the first dam, a water discharge check valve and a second turbine are arranged in the water discharge outlet channel, and a water discharge inlet channel connected to the water discharge reservoir is arranged on the top of the second dam; the water storage chamber is connected to the deep seawater through the cold water pipe, and the deep seawater can enter the cold water pipe into the water storage chamber; the thermal energy difference integrated power generation system includes a plurality of thermal energy difference power generation modules, the thermal energy difference power generation module includes a flash evaporator, an evaporator, a fresh water collector, a condenser, a first pumping mechanism, a second pumping mechanism, a third pumping mechanism and a generator, the liquid inlet of the flash evaporator is communicated with the water storage outlet channel, the gas outlet of the flash evaporator is connected to the high temperature medium inlet of the evaporator, the high temperature medium outlet of the evaporator is connected to the fresh water collector, the low temperature medium outlet of the evaporator is connected to the high temperature medium inlet of the condenser through a first pipeline, the generator is arranged on the first pipeline, the high temperature medium outlet of the condenser is connected to the low temperature medium inlet of the evaporator through a first pumping mechanism, the low temperature medium inlet of the condenser is connected to the water storage chamber through the second pumping mechanism, the low temperature medium outlet of the condenser is connected to the drain water inlet channel through the third pumping mechanism, the first turbine, the second turbine, the generator, the flash evaporator, the first pumping mechanism, the second pumping mechanism and the third pumping mechanism are all connected to the controller.

[0006] Preferably, the partition component is a partition dam, both ends of which are connected to the first dam and the second dam respectively, and the partition dam is located between the two side dams.

[0007] Preferably, the water storage inlet channel is provided with a first filter screen, a water storage one-way valve and a first turbine in sequence from one end close to the shallow sea water to one end close to the water reservoir, and the water storage one-way valve is a water storage Tesla valve.

[0008] Preferably, a second filter screen, a second turbine and a discharge check valve are sequentially arranged in the discharge outlet channel from one end close to the shallow sea water to one end close to the discharge reservoir, and the discharge check valve is a discharge Tesla valve.

[0009] Preferably, a third filter is provided on a side of the water storage outlet channel close to the water reservoir, and a fourth filter is provided on a side of the cold water pipe close to the deep sea water.

[0010] Preferably, a pressure pump is further included, and the cold water pipe is arranged to be inclined downward from one end close to the water storage chamber to one end close to the deep sea water, and the pressure pump is used to reduce the pressure in the water storage chamber.

[0011] Preferably, the water storage outlet channel is connected to a first main pipe on a side away from the water reservoir, a flow sensor is provided in the first main pipe, the thermal energy difference power generation module also includes a branch pipe, both ends of the branch pipe are respectively connected to the first main pipe and the liquid inlet of the flash evaporator, a valve is provided on the branch pipe, and the flow sensor and the valve are both connected to the controller.

[0012] Preferably, a first temperature sensor is provided in the water storage inlet channel, a second temperature sensor is provided in the cold water pipe, and both the first temperature sensor and the second temperature sensor are connected to the controller.

[0013] Preferably, a second main pipe is connected to a side of the drainage water inlet channel away from the drainage reservoir, and each of the third pumping mechanisms is connected to the second main pipe.

[0014] Preferably, the cold water pipe includes an outer tube, an interlayer tube and an inner tube which are fixedly mounted in sequence from the outside to the inside, the interlayer tube includes an elastic support structure and an adsorption material filled in the elastic support structure, and a plurality of through holes are arranged on the tube wall of the inner tube, and the aperture of the through holes is smaller than the particle size of the adsorption material.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] The first dam of the tidal thermal energy difference power generation device of the present invention is provided with a water storage inlet channel for connecting shallow seawater and a water storage reservoir, a water storage check valve and a first turbine are provided in the water storage inlet channel, a water storage outlet channel connected to the water storage reservoir is provided at the bottom of the second dam, a water discharge outlet channel for connecting shallow seawater and a water discharge reservoir is provided on the first dam, a water discharge check valve and a second turbine are provided in the water discharge outlet channel, and a water discharge inlet channel connected to the water discharge reservoir is provided at the top of the second dam; the water storage chamber is connected to the deep seawater through a cold water pipe, and the deep seawater can enter the water storage chamber through the cold water pipe; the thermal energy difference integrated power generation system includes a plurality of thermal energy difference power generation modules. When seawater flows through the first turbine and the second turbine, tidal energy is used to generate electricity, and the thermal energy difference between shallow seawater and deep seawater is used to generate electricity in the thermal energy difference power generation module, and the fluctuation of seawater and the thermal energy contained in seawater are used to produce electricity, that is, tidal energy power generation and thermal energy difference power generation are integrated, and the power generation efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A top view of the tidal thermal energy difference power generation device provided by the present invention;

[0019] Figure 2 A front view of the tidal thermal energy difference power generation device provided by the present invention;

[0020] Figure 3 A schematic diagram of the structure of a thermal energy difference power generation module in a tidal thermal energy difference power generation device provided by the present invention;

[0021] Figure 4 A schematic diagram of the structure of a flash evaporator in a tidal thermal energy difference power generation device provided by the present invention;

[0022] Figure 5 A schematic diagram of the structure of a condenser in a tidal thermal energy difference power generation device provided by the present invention;

[0023] Figure 6 A schematic diagram of the structure of a cooling water pipe in a tidal thermal energy difference power generation device provided by the present invention;

[0024] Figure 7 A partial schematic diagram of the elastic support structure in the tidal thermal energy difference power generation device provided by the present invention.

[0025] Explanation of the reference numerals: 1. water storage reservoir; 2. water discharge reservoir; 3. water storage check valve; 4. water discharge check valve; 5. thermal energy difference integrated power generation system; 51. branch pipe; 52. flash evaporator; 521. shell; 522. liquid inlet; 523. gas outlet; 524. safety valve interface; 525. inspection cover; 53. evaporator; 54. condenser; 55. fresh water collector; 56. generator; 57. first pipeline; 58. second pipeline; 59. first delivery pipe; 510. first delivery pump; 511. second delivery pipe; 512. second delivery pump; 513. first Three delivery pipes; 514, the third delivery pump; 6, the first main pipe; 7, the second main pipe; 8, the first dam; 9, the second dam; 10, the water storage inlet channel; 11, the first turbine; 12, the first filter screen; 13, the water discharge outlet channel; 14, the second turbine; 15, the second filter screen; 16, the water storage outlet channel; 17, the third filter screen; 18, the water discharge inlet channel; 19, the water storage chamber; 20, the cold water pipe; 201, the outer tube; 202, the sandwich tube; 2021, the elastic support structure; 203, the inner tube; 21, the fourth filter screen; 22, the sea level. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The purpose of the present invention is to provide a tidal thermal energy difference power generation device, which integrates tidal energy power generation and thermal energy difference power generation to improve power generation efficiency.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1-Figure 7 As shown, this embodiment provides a tidal thermal energy difference power generation device, including a first dam 8, a second dam 9, a partition component, a water storage chamber 19, a thermal energy difference integrated power generation system 5, a controller and two side dams, one side of the first dam 8 is used to contact with seawater, and the second dam 9 is arranged on the other side of the first dam 8, and the front and rear sides between the first dam 8 and the second dam 9 are connected by a side dam, and the partition component divides the first dam 8, the second dam 9 and the area between the two side dams into a reservoir 1 and a discharge reservoir 2.

[0030] A water storage inlet channel 10 for connecting shallow seawater and the reservoir 1 is provided on the first dam 8. A water storage one-way valve 3 and a first water turbine 11 are provided in the water storage inlet channel 10. The water storage one-way valve 3 allows seawater to flow only toward the reservoir 1 in the water storage inlet channel 10. When seawater flows toward the reservoir 1 through the water storage inlet channel 10, the first water turbine 11 generates electricity. The bottom of the second dam 9 is provided with a water storage outlet channel 16 connected to the water storage reservoir 1, and the first dam 8 is provided with a water discharge outlet channel 13 for connecting the shallow seawater and the water discharge reservoir 2. The water discharge outlet channel 13 is provided with a water discharge check valve 4 and a second turbine 14. The water discharge check valve 4 allows the seawater to flow only toward the ocean in the water discharge outlet channel 13. When the seawater in the water discharge reservoir 2 flows to the ocean through the water discharge outlet channel 13, the second turbine 14 generates electricity. The top of the second dam 9 is provided with a water discharge inlet channel 18 connected to the water discharge reservoir 2. In this embodiment, the setting height of the water discharge outlet channel 13 is lower than the setting height of the water storage inlet channel 10.

[0031] The water storage chamber 19 is connected to the deep seawater through the cold water pipe 20, and the deep seawater can enter the water storage chamber 19 through the cold water pipe 20; the thermal energy difference integrated power generation system 5 includes a plurality of thermal energy difference power generation modules, and the thermal energy difference power generation module includes a flash evaporator 52, an evaporator 53, a fresh water collector 55, a condenser 54, a first pumping mechanism, a second pumping mechanism, a third pumping mechanism and a generator 56, the liquid inlet 522 of the flash evaporator 52 is connected to the water storage outlet channel 16, the gas outlet 523 of the flash evaporator 52 is connected to the high temperature medium inlet of the evaporator 53, the high temperature medium outlet of the evaporator 53 is connected to the fresh water collector 55, and the evaporator 53 is connected to the fresh water collector 55. The low-temperature medium outlet of the evaporator 53 is connected to the high-temperature medium inlet of the condenser 54 through the first pipeline 57, the generator 56 is arranged on the first pipeline 57, the high-temperature medium outlet of the condenser 54 is connected to the low-temperature medium inlet of the evaporator 53 through the first pumping mechanism, the low-temperature medium inlet of the condenser 54 is connected to the water storage chamber 19 through the second pumping mechanism, the low-temperature medium outlet of the condenser 54 is connected to the drain water inlet channel 18 through the third pumping mechanism, and the first turbine 11, the second turbine 14, the generator 56, the flash evaporator 52, the first pumping mechanism, the second pumping mechanism and the third pumping mechanism are all connected to the controller.

[0032] The tidal thermal energy difference power generation device in this embodiment utilizes tidal energy to generate electricity when seawater flows through the first turbine 11 and the second turbine 14, and realizes power generation by utilizing the thermal energy difference between shallow seawater and deep seawater in the thermal energy difference power generation module, and utilizes the rise and fall of seawater and the thermal energy contained in seawater to produce electricity, that is, it integrates tidal energy power generation and thermal energy difference power generation, thereby improving power generation efficiency.

[0033] The partition member in this embodiment is a partition dam, the two ends of which are respectively connected to the first dam 8 and the second dam 9, and the partition dam is located between the two side dams. A reservoir 1 is located between the partition dam and one side dam, and a discharge reservoir 2 is located between the partition dam and the other side dam.

[0034] Specifically, the water storage inlet channel 10 is provided with a first filter screen 12, a water storage check valve 3 and a first turbine 11 in sequence from the end close to the shallow seawater to the end close to the reservoir 1. In this embodiment, the first turbine 11 is an axial flow turbine, and the water storage check valve 3 is a water storage Tesla valve.

[0035] Specifically, the second filter screen 15, the second turbine 14 and the discharge check valve 4 are sequentially arranged in the discharge outlet channel 13 from the end close to the shallow seawater to the end close to the discharge reservoir 2. The second turbine 14 in this embodiment is a bulb cross-flow turbine, and the discharge check valve 4 is a discharge Tesla valve.

[0036] The design of the Tesla valve for water storage and discharge includes a series of curved and return channels, which will cause certain disturbances to the water flow. When the water flows through these complex channels, the flow rate is limited, and pressure loss occurs at the bends, thereby slowing down the water flow. These designs play a key role in controlling the water flow. At the same time, the tortuous channels can slow down the water flow rate to a certain extent. The water flow undergoes multiple changes and direction adjustments in the channel, causing its flow rate to gradually decrease.

[0037] By changing the channel size or design of the water storage Tesla valve and the water discharge Tesla valve, the flow through the valve can be affected. Narrower channels increase the resistance to flow, thereby reducing the flow rate; while wider channels allow more fluid to pass through.

[0038] Tesla valves for water storage and discharge can effectively regulate the flow rate and velocity of water flow through the resistance inherent in their structure, especially the resistance to reverse flow. In the case of reverse flow, the complex structure inside the valve generates a very large flow resistance, thereby reducing the reverse water flow and reverse flow velocity.

[0039] The biggest feature of the Tesla valve for water storage and discharge is that it does not rely on any moving parts or external drives, but relies entirely on its static structure to adjust the flow rate and flow rate. This makes the Tesla valve particularly suitable for situations where long-term stable operation is required without mechanical wear or failure.

[0040] Specifically, a third filter screen 17 is provided on a side of the water storage outlet channel 16 close to the water storage reservoir 1 , and a fourth filter screen 21 is provided on a side of the cold water pipe 20 close to the deep sea water.

[0041] This embodiment also includes a pressure extractor, and the cold water pipe 20 is arranged downwardly inclined from one end close to the water storage chamber 19 to one end close to the deep sea water, and the pressure extractor is used to reduce the pressure in the water storage chamber 19. The pressure extractor is connected to the controller, so that the opening and closing of the pressure extractor can be controlled by the controller.

[0042] like Figure 2 As shown, the water storage chamber 19 in this embodiment is located below the sea level 22, and the elevation of the water storage chamber 19 is lower than the elevation of the sea level 22, with a height difference therebetween, so that a pressure difference is generated at the liquid levels at both ends. The pump is first used to reduce the pressure in the water storage chamber 19, so that the pressure difference at both ends of the cold water pipe 20 increases, so that the deep seawater is pressed into the laid cold water pipe 20 under the action of pressure due to the strong pressure of the sea level 22, and flows into the water storage chamber 19 along the cold water pipe 20. When the deep seawater fills the cold water pipe 20 and enters the water storage chamber 19, the pump is stopped, and the deep seawater will continue to be pressed into the water storage chamber 19 due to the siphon principle, thereby completing the collection of the deep seawater, and then providing the deep seawater for the condenser 54 of the thermal energy difference integrated power generation system 5.

[0043] The side of the water storage outlet channel 16 away from the water reservoir 1 is connected to the first main pipe 6, and a flow sensor is arranged in the first main pipe 6. The thermal energy difference power generation module also includes a branch pipe 51, and the two ends of the branch pipe 51 are respectively connected to the first main pipe 6 and the liquid inlet 522 of the flash evaporator 52. A valve is arranged on the branch pipe 51, and the flow sensor and the valve are both connected to the controller.

[0044] A first temperature sensor is provided in the water storage inlet channel 10, and a second temperature sensor is provided in the cold water pipe 20. Both the first temperature sensor and the second temperature sensor are connected to the controller. Shallow seawater is warm seawater, and deep seawater is cold seawater. The first temperature sensor is used to monitor the temperature of shallow seawater, and the second temperature sensor is used to monitor the temperature of deep seawater.

[0045] In this embodiment, the thermal energy difference integrated power generation system 5 is miniaturized and modularized by using a number of small thermal energy difference power generation modules to form the thermal energy difference integrated power generation system 5 for centralized power generation.

[0046] The controller can regulate the thermal energy difference integrated power generation system 5 according to the flow rate measured by the flow sensor in the first main pipe 6. Specifically, when the flow rate is low, the number of running thermal energy difference power generation modules is reduced to concentrate resources to improve the efficiency of a single thermal energy difference power generation module; when the flow rate is high, the number of running thermal energy difference power generation modules is increased to fully utilize the energy.

[0047] Alternatively, the controller may regulate the thermal energy difference integrated power generation system 5 according to the difference between the temperature value of the shallow seawater measured by the first temperature sensor and the temperature value of the deep seawater measured by the second temperature sensor. Specifically, when the temperature difference is small, the number of operating thermal energy difference power generation modules may be reduced to reduce losses; when the temperature difference is large, the number of operating thermal energy difference power generation modules may be increased to fully convert thermal energy.

[0048] Alternatively, when the tidal thermal energy difference power generation device can provide enough electricity for the power grid, the controller can dynamically adjust the number of thermal energy difference power generation modules in operation according to the power grid demand to avoid too many thermal energy difference power generation modules running, resulting in reduced efficiency or energy waste. Specifically, when the power consumption is at a peak, more thermal energy difference power generation modules are quickly loaded to meet the demand; when the power consumption is at a low point, some thermal energy difference power generation modules are shut down to save operating costs.

[0049] When switching the on and off states of the thermal energy difference power generation module, there are the following three switching strategies.

[0050] The first is the on-demand loading strategy, which only runs the necessary number of thermal energy difference power generation modules under low load conditions and keeps other thermal energy difference power generation modules in standby status; when the load increases, more thermal energy difference power generation modules are gradually loaded.

[0051] The second is a priority sorting strategy, which sets the priority of the thermal energy difference power generation module. For example, the thermal energy difference power generation module with the highest efficiency and the best maintenance status is activated first, and the thermal energy difference power generation module with low efficiency or damage is shut down first.

[0052] The third is the energy consumption balance strategy. When the total water flow is fixed but the operation of multiple modules leads to a decrease in overall efficiency, the modules with lower efficiency are shut down first to optimize the overall performance.

[0053] Specifically, when a thermal energy difference power generation module needs to be closed, the controller controls the valve, the first pumping mechanism, the second pumping mechanism, the third pumping structure and the flash evaporator 52 of the thermal energy difference power generation module to be closed. When a thermal energy difference power generation module needs to be opened, the controller controls the valve, the first pumping mechanism, the second pumping mechanism, the third pumping structure and the flash evaporator 52 of the thermal energy difference power generation module to be opened.

[0054] This embodiment also includes at least one spare thermal energy difference power generation module, that is, the spare thermal energy difference power generation module is in a closed state during normal operation. When some thermal energy difference power generation modules need maintenance or are damaged, the spare thermal energy difference power generation modules can be turned on to ensure continuous and stable operation of the system and improve system reliability and operation time.

[0055] The side of the drainage water inlet channel 18 away from the drainage reservoir 2 is connected to the second main pipe 7 , and each of the third pumping mechanisms is connected to the second main pipe 7 .

[0056] The first pumping mechanism includes a first delivery pipe 59 and a first delivery pump 510 arranged on the first delivery pipe 59. Both ends of the first delivery pipe 59 are respectively connected to the high-temperature medium outlet of the condenser 54 and the low-temperature medium inlet of the evaporator 53. The first delivery pump 510 is connected to the controller.

[0057] The second pumping mechanism includes a second delivery pipe 511 and a second delivery pump 512 arranged on the second delivery pipe 511. Both ends of the second delivery pipe 511 are respectively connected to the low-temperature medium inlet of the condenser 54 and the water storage chamber 19. The second delivery pump 512 is connected to the controller.

[0058] The third pumping mechanism includes a third delivery pipe 513 and a third delivery pump 514 arranged on the third delivery pipe 513. Both ends of the third delivery pipe 513 are respectively connected to the low-temperature medium outlet of the condenser 54 and the second main pipe 7. The third delivery pump 514 is connected to the controller.

[0059] In this specific embodiment, the first delivery pump 510 is a working fluid pump, and the second delivery pump 512 and the third delivery pump 514 are water pumps.

[0060] like Figure 6 and Figure 7 As shown, the cold water pipe 20 includes an outer layer pipe 201, a sandwich pipe 202 and an inner layer pipe 203 which are fixedly sleeved in sequence from the outside to the inside. The sandwich pipe 202 includes an elastic support structure 2021 and an adsorbent material filled in the elastic support structure 2021. The elastic support structure 2021 in this embodiment is an elastic support frame, that is, it has a gap, and the adsorbent material is filled in the gap of the elastic support frame. A plurality of through holes are arranged on the pipe wall of the inner layer pipe 203, and the aperture of the through holes is smaller than the particle size of the adsorbent material.

[0061] The cold water pipe 20 in this embodiment is a sandwich structure, which has higher resistance strength than a single-layer structure pipe. Since the cold water pipe 20 is partially underwater and partially underground, when hydrostatic pressure or static earth pressure acts on the outer layer pipe 201, the middle sandwich pipe 202 can play a buffering role, thereby reducing the destructive effect of hydrostatic pressure and static earth pressure on the pipeline. When seawater flows into the inner layer pipe 203 and enters the sandwich pipe 202, the adsorption material in the sandwich pipe 202 can play an adsorption and filtration role.

[0062] Specifically, the outer tube 201, the inner tube 203 and the elastic support structure 2021 are made of high-density polyethylene, wave fiber composite plastic or carbon fiber compound. The adsorption material is activated carbon.

[0063] The evaporator 53 in this embodiment is a plate heat exchanger made of brazed aluminum material. In a corrosive warm seawater environment, the use of brazed aluminum material allows the service life to reach more than 30 years. At the same time, the plate heat exchanger is small in size, has good heat transfer effect, and is low in cost, and is suitable for use in a closed cycle.

[0064] The condenser 54 in this embodiment is an immersed heat exchanger made of brazed aluminum. Figure 5 As shown, the high temperature medium inlet and the high temperature medium outlet of the condenser 54 are respectively the tube side inlet and the tube side outlet of the condenser 54 , and the low temperature medium inlet and the low temperature medium outlet of the condenser 54 are respectively the shell side inlet and the shell side outlet of the condenser 54 .

[0065] The flash evaporator 52 in this embodiment adopts a conventional tank-made flash evaporator 52, which provides space for rapid fluid vaporization and vapor-liquid separation for warm seawater, and can convert liquid substances into gaseous substances at a relatively low temperature, thereby reducing energy consumption and environmental pollution.

[0066] Specifically, a gas outlet 523 is provided at the top of the shell 521 of the flash evaporator 52, and the gas outlet 523 of the flash evaporator 52 is connected to the high-temperature medium inlet of the evaporator 53 through the second pipeline 58. A safety valve interface 524 and a liquid inlet 522 are provided on one side of the shell 521 in order from top to bottom, and two inspection holes are also provided on the side of the shell 521, and an inspection cover 525 is provided on each inspection hole.

[0067] The generator 56 in this embodiment is a vertical axis generator 56 .

[0068] In this embodiment, the first dam 8, the second dam 9, the separation dam and the two side dams are all in contact with seawater, so protective measures are required to prevent the dam structure from being damaged.

[0069] Specifically, the salt content of seawater and tidal action can cause corrosion of concrete or steel structures, especially in coastal environments. Protection measures include the use of anti-corrosion materials, that is, the selection of materials such as concrete resistant to seawater corrosion (such as seawater corrosion-resistant concrete) and anti-corrosion steel bars. It also includes the use of coating protection, treating the surface of the structure with an anti-corrosion coating, such as epoxy resin coating, to reduce the erosion of the dam body by salt and moisture. It also includes the use of galvanized steel, galvanizing the steel to increase its corrosion resistance.

[0070] Dams at the seaside usually need to withstand strong waves and storm surges, which can have a huge impact on the structure. The following measures should be taken: Strengthen the dam structure, specifically, by increasing the stability and impact resistance of the dam to ensure that it is not damaged by large waves and storm surges. Strengthen the slope of the dam, specifically, design a reasonable dam slope and slope structure to reduce the impact of waves. Set up breakwaters, specifically, build breakwaters or wave-blocking walls in front of the dam to disperse the energy of the waves and reduce the direct impact of the waves on the dam.

[0071] Seaside dams often face soil erosion problems, especially under the action of tides and waves. Protective measures include: planting protective vegetation, specifically, planting salt-tolerant plants such as seaside grasses and shrubs to increase soil stability and prevent sand and soil loss. Establishing slope protection measures, specifically, using materials such as stone, concrete or metal mesh to reinforce the dam surface to prevent soil from being washed away.

[0072] The dam body at the seaside also needs to have an effective drainage system to prevent the accumulation of water, which may lead to instability of the dam body or structural deformation. Specific measures include: setting up drainage pipes, specifically, setting up drainage pipes inside or on the surface of the dam body to ensure smooth water flow and prevent water accumulation. Using permeable materials, specifically, permeable concrete or other permeable materials can be used on the surface of the dam body to help drain water.

[0073] The seaside environment has a complex variety of organisms. Crustaceans such as barnacles and algae may grow on the dam structure, which will damage the dam structure. Specific measures include: Selecting suitable materials: When constructing the dam, choose concrete with added preservatives, or use materials that are not easily attached to organisms (such as polymer-based composite materials). Surface treatment: Spray an anti-biological attachment coating on the surface of the dam, such as polyurethane coating or special anti-fouling coating. Design structure: During the design stage, use inclined surfaces and streamlined structures to avoid flat surfaces. Regular cleaning: Develop a cleaning plan and regularly use high-pressure water guns or mechanical cleaning equipment to remove attached organisms. Physical barriers: Install protective nets or fences around the dam to restrict the entry of certain organisms (such as seaweed and shellfish).

[0074] The dam bodies at the seaside can also be equipped with structural monitoring and early warning systems. Specific measures include: installing sensors, specifically, installing vibration sensors, stress sensors and other equipment on the dam body to monitor the status of the dam body in real time. Intelligent early warning systems, specifically, through the integration of meteorological and ocean monitoring data and real-time monitoring systems, can provide early warnings of possible storm surges or extreme weather, and take countermeasures in advance.

[0075] After extreme weather or natural disasters, the emergency response mechanism of the dam is very important. Specific measures include: emergency repair materials, specifically, the storage of fast-curing repair materials, which can be repaired in the shortest time. Emergency plans, specifically, the establishment of emergency response plans to ensure that measures are taken quickly when the dam is damaged to avoid the expansion of the disaster. Through these multi-faceted protection measures, the service life of the seaside dam can be effectively extended to ensure its stability and functionality under various natural conditions.

[0076] The specific working process is as follows: at high tide, shallow seawater passes through the first turbine 11 for tidal power generation, and then the shallow seawater enters the reservoir 1, and is introduced into the thermal energy difference integrated power generation system 5 through the water storage outlet channel 16 and the first main pipe 6. The water storage chamber 19 begins to draw deep seawater, and the deep seawater is pumped into the thermal energy difference integrated power generation system 5 through the second delivery pump 512. The thermal energy difference integrated power generation system 5 begins to generate electricity using the thermal energy difference, and finally the seawater after heat exchange is pumped back to the discharge reservoir 2 through the third delivery pump 514. At low tide, the seawater in the discharge reservoir 2 is discharged and passes through the second turbine 14 for tidal power generation. The overall power production process is completed.

[0077] The process of generating electricity by utilizing thermal energy difference is as follows: shallow seawater entering the reservoir 1 is directed into the flash evaporator 52, and is subjected to low-pressure treatment in the flash evaporator 52 to reduce the boiling point of the seawater, so that the shallow seawater evaporates into gas, and enters the evaporator 53 along the pipeline. The heat energy brought by the gas is used to evaporate the low-boiling-point working fluid solution in the evaporator 53, and the shallow seawater is condensed into fresh water through the evaporator 53 and flows into the fresh water collector 55. The working fluid gas evaporated from the evaporator 53 is carried along the pipeline and through the generator 56 to produce electricity, and then continues to enter the condenser 54 along the pipeline, and the working fluid gas is condensed with deep seawater, and finally pumped back into the evaporator 53 through the first delivery pump 510 to complete a cycle.

[0078] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A tidal thermal energy difference power generation device, characterized in that: The invention comprises a first dam, a second dam, a partition component, a water storage chamber, a thermal energy difference integrated power generation system, a controller and two side dams, wherein one side of the first dam is used to contact with seawater, the other side of the first dam is provided with the second dam, the front and rear sides between the first dam and the second dam are connected by one of the side dams, the partition component divides the first dam, the second dam and the area between the two side dams into a water storage reservoir and a water discharge reservoir; the first dam is provided with a device for connecting the shallow seawater and the water storage reservoir A water storage inlet channel is provided in the water storage inlet channel, a water storage check valve and a first turbine are provided in the water storage inlet channel, a water storage outlet channel connected to the water storage reservoir is provided at the bottom of the second dam, a water discharge outlet channel for connecting shallow seawater and the discharge reservoir is provided on the first dam, a water discharge check valve and a second turbine are provided in the discharge outlet channel, and a water discharge inlet channel connected to the discharge reservoir is provided on the top of the second dam; the water storage chamber is connected to deep seawater through a cold water pipe, and deep seawater can enter the water storage chamber through the cold water pipe; The thermal energy difference integrated power generation system includes a plurality of thermal energy difference power generation modules, wherein the thermal energy difference power generation modules include a flash evaporator, an evaporator, a fresh water collector, a condenser, a first pumping mechanism, a second pumping mechanism, a third pumping mechanism and a generator, wherein the liquid inlet of the flash evaporator is communicated with the water storage outlet channel, the gas outlet of the flash evaporator is connected with the high temperature medium inlet of the evaporator, the high temperature medium outlet of the evaporator is connected with the fresh water collector, the low temperature medium outlet of the evaporator is connected with the high temperature medium inlet of the condenser through a first pipeline, the generator is arranged on the first pipeline, the high temperature medium outlet of the condenser is connected with the low temperature medium inlet of the evaporator through a first pumping mechanism, the low temperature medium inlet of the condenser is connected with the water storage chamber through the second pumping mechanism, the low temperature medium outlet of the condenser is connected with the drain water inlet channel through the third pumping mechanism, and the first turbine, the second turbine, the generator, the flash evaporator, the first pumping mechanism, the second pumping mechanism and the third pumping mechanism are all connected with the controller.

2. The tidal thermal energy difference power generation device according to claim 1, characterized in that: The partition component is a partition dam, both ends of which are connected to the first dam and the second dam respectively, and the partition dam is located between the two side dams.

3. The tidal thermal energy difference power generation device according to claim 1, characterized in that: The water storage inlet channel is provided with a first filter screen, a water storage one-way valve and a first turbine in sequence from one end close to the shallow sea water to one end close to the water reservoir, and the water storage one-way valve is a water storage Tesla valve.

4. The tidal thermal energy difference power generation device according to claim 1, characterized in that: The water discharge outlet channel is provided with a second filter screen, a second turbine and a water discharge one-way valve in sequence from one end close to the shallow sea water to one end close to the water discharge reservoir. The water discharge one-way valve is a water discharge Tesla valve.

5. The tidal thermal energy difference power generation device according to claim 1, characterized in that: A third filter is provided on a side of the water storage outlet channel close to the water reservoir, and a fourth filter is provided on a side of the cold water pipe close to the deep sea water.

6. The tidal thermal energy difference power generation device according to claim 1, characterized in that: It also includes a pressure extractor. The cold water pipe is arranged to be inclined downward from one end close to the water storage chamber to one end close to the deep sea water. The pressure extractor is used to reduce the pressure in the water storage chamber.

7. The tidal thermal energy difference power generation device according to claim 1, characterized in that: The water storage outlet channel is connected to a first main pipe on one side away from the water reservoir, a flow sensor is arranged in the first main pipe, the thermal energy difference power generation module also includes a branch pipe, both ends of the branch pipe are respectively connected to the first main pipe and the liquid inlet of the flash evaporator, a valve is arranged on the branch pipe, and the flow sensor and the valve are both connected to the controller.

8. The tidal thermal energy difference power generation device according to claim 7, characterized in that: A first temperature sensor is arranged in the water storage and water inlet channel, and a second temperature sensor is arranged in the cold water pipe. Both the first temperature sensor and the second temperature sensor are connected to the controller.

9. The tidal thermal energy difference power generation device according to claim 1, characterized in that: The side of the drainage water inlet channel away from the drainage reservoir is connected to a second main pipe, and each of the third pumping mechanisms is connected to the second main pipe.

10. The tidal thermal energy difference power generation device according to claim 1, characterized in that: The cold water pipe includes an outer tube, an interlayer tube and an inner tube which are fixedly mounted in sequence from the outside to the inside. The interlayer tube includes an elastic support structure and an adsorption material filled in the elastic support structure. A plurality of through holes are arranged on the tube wall of the inner tube, and the aperture of the through holes is smaller than the particle size of the adsorption material.

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