Wave vibration type internal flow energy power generation device

Abstract

The invention discloses a wave vibration type internal flow energy power generation device which shakes along with waves, liquid in a left cavity and a right cavity shakes under the action of the waves, so that the water level in the left cavity or the right cavity rises or falls, ocean current flows in a communicating pipe in a reciprocating mode, and the wave vibration type internal flow energy power generation device is formed. The turbine generator in the communicating pipe is impacted by water flow to rotate and generate electric energy. When the left cavity and the right cavity shake, the free liquid levels of the liquid in the left cavity and the right cavity can rise and fall to a great extent respectively, so that positive pressure is formed in the left cavity and the right cavity to discharge airflow or negative pressure is generated to suck external air, and the airflow drives a turbine generator in the exhaust pipe to rotate to generate electric energy. The power generation device has the advantages of being simple in structure, high in adaptability, low in maintenance cost, high in wave energy conversion efficiency and stable in power generation effect.

Description

Technical Field

[0001] The invention belongs to the technical field of renewable energy development and utilization, and specifically relates to a wave vibration type internal flow energy power generation device. Background Art

[0002] Wave energy is a new type of marine energy with high energy density, clean and pollution-free, and very abundant reserves. my country has vast marine resources. Increasing the development and utilization of wave energy will effectively alleviate my country's energy shortage and environmental pollution problems.

[0003] The main way to utilize wave energy is to generate electricity. According to the principle of wave energy capture, wave energy power generation devices are mainly divided into four types: oscillating water column type, overtopping type, attenuation type and point absorption type. Different types of wave energy power generation devices have their own characteristics, including:

[0004] The oscillating water column wave energy power generation device contains a hollow chamber whose bottom is connected to the seawater. The reciprocating action of the waves is used to make the water column in the chamber oscillate back and forth, thereby pressurizing the air in the chamber and forming a reciprocating airflow, which in turn drives the turbine to generate electricity. However, this type of power generation device often needs to be built near the coastline and is limited by geographical factors and has poor applicability.

[0005] The wave-riding wave energy power generation device needs to utilize the topographic structure of the coast to allow the waves to pass over the wave-guiding slope, direct the waves into the high-water level reservoir, and then use the potential energy generated by the height difference of the water surface to drive the turbine to generate electricity. However, the wave-riding wave energy power generation device has relatively strict requirements on the terrain and is not suitable for large-scale promotion.

[0006] The attenuated wave energy power generation device uses the ups and downs of waves to drive the power generation device to generate electricity. The raft wave energy power generation device is a typical attenuated wave energy power generation device, including several rafts, which are connected by hydraulic mechanisms at the front and back. The waves push the rafts up and down, and the change in the relative position of the front and rear rafts drives the hydraulic system, and finally drives the generator to generate electricity. Since the waves in the ocean frequently impact the power generation device, the hydraulic mechanism frequently operates. Long-term high-load operation can easily damage the hydraulic mechanism, resulting in failure to supply power normally, and unable to ensure the stable operation of electrical equipment in the ocean. The maintenance cost of the device is also very high. In addition, the pendulum wave energy power generation device also belongs to the attenuated wave energy power generation device. The device relies on the pendulum plate hinged on the sea surface platform to reciprocate up and down under the action of waves, and then recovers this part of mechanical energy to generate electricity. However, the pendulum wave energy power generation device is easily affected by tidal fluctuations, thereby limiting the capture efficiency of wave energy.

[0007] The point-absorption wave energy power generation device consists of two floats, which use the vertical movement of the two floats under the action of waves to generate electricity. However, due to the unstable energy of the waves, it is impossible to ensure that the device and the waves are optimally matched in real time, so the power generation effect of the point-absorption wave energy power generation device is not stable.

[0008] Since the marine environment is very complex, the selection of wave energy power generation devices in marine engineering must comprehensively consider multiple factors such as terrain, marine environment, equipment cost and operation and maintenance cost. However, all of the above-mentioned types of wave energy power generation devices have certain limitations. At present, there is an urgent need to develop a wave energy power generation device to solve the problems of existing wave energy power generation devices, such as complex structure, poor adaptability, low wave energy conversion efficiency, unstable power generation effect, etc. Summary of the invention

[0009] In view of the above problems, the present invention provides a wave vibration type internal flow energy power generation device, which can simultaneously recover the energy of two fluids, liquid and air in the left and right containers to achieve power generation. It has the effects of simple structure, strong adaptability, low maintenance cost, high wave energy conversion efficiency and stable power generation effect, so as to better utilize wave energy resources.

[0010] In order to achieve the above object, the present invention adopts the following specific technical solutions:

[0011] A wave vibration type internal flow energy power generation device, the power generation device comprises a float, a left container, a right container, a connecting pipe and a turbine generator;

[0012] The left container has a left chamber inside, and a left exhaust pipe communicating with the left chamber is provided on the top; the right container has a right chamber inside, and a right exhaust pipe communicating with the right chamber is provided on the top; the left container and the right container are symmetrically arranged on the left and right sides, and the communicating pipe is fixedly connected to the bottom of the left container and the right container; the communicating pipe communicates the left chamber with the right chamber; the left chamber and the right chamber are both filled with liquid, and the liquid in the left chamber and the right chamber accounts for more than 1 / 2 of the total volume of the left chamber and the right chamber;

[0013] The turbine generator is installed in the left exhaust pipe, the right exhaust pipe and the connecting pipe;

[0014] The float is made of lightweight material, fixedly installed on the connecting pipe, and located between the left container and the right container;

[0015] The power generation device can float on the sea surface, and in a floating state, the external seawater at least immerses half of the left container and the right container.

[0016] Furthermore, the turbine generator is a bidirectional turbine generator that can rotate in the same direction under the action of bidirectional fluid.

[0017] Furthermore, it also includes a liquid level sensor, a water supply pump, a water inlet pipe and a water outlet pipe;

[0018] The liquid level sensor is installed at 1 / 2 height of the inner wall of the left container, and is used to detect the liquid level in the left container;

[0019] The water replenishment pump is fixedly installed in the float; the water inlet of the water replenishment pump is connected to the water inlet pipe, and the water outlet is connected to the water outlet pipe; the water inlet pipe is immersed in seawater; the water outlet pipe is connected to the right chamber;

[0020] The water replenishment pump, the water inlet pipe, the water outlet pipe and the liquid level sensor constitute a water replenishment system for replenishing seawater into the right container.

[0021] Furthermore, it also includes a bracket fixedly installed inside the float;

[0022] The water replenishment pump is fixedly connected to the bracket.

[0023] Furthermore, both the left container and the right container are ellipsoidal containers, and the major axis is arranged along the vertical direction.

[0024] Furthermore, it also includes a fixing ring;

[0025] One end of the fixing ring is fixedly connected to the float, and the other end is fixedly connected to the connecting pipe.

[0026] Further, cables and weights are included;

[0027] The weight is located on the seabed;

[0028] The top end of the cable is connected to the float, and the bottom end is connected to the weight.

[0029] Furthermore, the liquid is seawater.

[0030] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0031] The wave vibration type internal flow energy power generation device of the present invention makes the left and right containers float on the sea surface by floaters, and uses the waves on the sea surface to drive the left and right containers to rise and fall, thereby driving the liquid in the left and right containers to shake, and makes the liquid in the left and right chambers circulate with each other through the connecting pipe and reciprocate in the connecting pipe when shaking, and drives the turbine generator to rotate by the flow of liquid in the connecting pipe. Therefore, the above-mentioned power generation device can make full use of the rich kinetic energy contained in the liquid in the connecting pipe, convert the kinetic energy of the liquid into electrical energy, and greatly improve the utilization rate of wave energy in the ocean.

[0032] At the same time, when the liquid in the left and right containers of the above-mentioned power generation device circulates with each other, the free liquid levels of the liquid in the left and right chambers will rise and fall respectively, so that positive pressure is formed in the left and right chambers to discharge the airflow through the exhaust pipe or negative pressure is generated to suck in the outside air through the exhaust pipe. The reciprocating motion of the airflow in the exhaust pipes at the top of the left and right containers is used to drive the turbine generators in the corresponding exhaust pipes to rotate, thereby converting the kinetic energy of the airflow generated when the left and right containers sway with the waves into electrical energy, further improving the utilization rate of wave energy.

[0033] In summary, the power generation device of the present invention only utilizes one connecting pipe to connect the chambers of the left and right containers, and respectively arranges turbine generators in the exhaust pipes and the connecting pipes of the left and right containers to recover the kinetic energy of the fluid for power generation. It has the advantages of simple structure, strong adaptability, low manufacturing and maintenance costs, high wave energy conversion efficiency and stable power generation effect, can better utilize wave energy resources, and has good promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a wave vibration type internal flow energy power generation device according to the present invention;

[0035] Figure 2 It is a schematic diagram of the water replenishment system in the wave vibration type internal flow energy power generation device of the present invention;

[0036] Figure 3 This is a diagram of the internal structure of the wave vibration type internal flow energy power generation device of the present invention;

[0037] Figure 4 It is a schematic diagram of the wave vibration type internal flow energy power generation device of the present invention being fixed in a designated water area;

[0038] Figure 5 Schematic diagram of three working states of the wave vibration type internal flow energy power generation device of the present invention;

[0039] Figure 6 This is a working principle diagram of the wave vibration type internal flow energy power generation device of the present invention when it is tilted to the right;

[0040] Figure 7This is a working principle diagram of the wave vibration type internal flow energy power generation device of the present invention when it is tilted to the left.

[0041] Among them, 1-float, 2-left container, 3-right container, 4-left exhaust pipe, 5-right exhaust pipe, 6-connecting pipe, 7-fixing ring, 8-turbine generator, 9-water supply pump, 10-bracket, 11-water pipe, 12-liquid level sensor, 13-cable, 14-weight. DETAILED DESCRIPTION

[0042] 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.

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of the present invention provides a wave vibration internal flow energy power generation device, which includes a float 1, a left container 2, a right container 3, a left exhaust pipe 4, a right exhaust pipe 5, a connecting pipe 6, a fixing ring 7, a turbine generator 8, a water supply pump 9, a bracket 10, a water pipe 11, a liquid level sensor 12, a cable 13 and a weight 14. Among them:

[0044] The left container 2 has a left chamber inside, and a left exhaust pipe 4 communicating with the left chamber is provided on the top; the right container 3 has a right chamber inside, and a right exhaust pipe 5 communicating with the right chamber is provided on the top; the left container 2 and the right container 3 are arranged symmetrically, and a connecting pipe 6 is fixedly connected at the bottom of the left container 2 and the right container 3; the connecting pipe 6 connects the left chamber with the right chamber; the left chamber and the right chamber are both filled with liquid, and the liquid in the left chamber and the right chamber accounts for more than 1 / 2 of the total volume of the left chamber and the right chamber; the liquid can be seawater, fresh water, etc.; a turbine generator 8 is installed in the left exhaust pipe 4, the right exhaust pipe 5 and the connecting pipe 6. The turbine generator 8 adopts a bidirectional turbine generator that can rotate in the same direction under the action of bidirectional airflow.

[0045] The float 1 is located between the left container 2 and the right container 3, is made of lightweight material, and can be fixedly installed on the connecting pipe 6 through a fixing ring 7; one end of the fixing ring 7 is fixedly connected to the float 1, and the other end is fixedly connected to the connecting pipe 6; the buoyancy generated by the float 1, the left container 2 and the right container 3 can ensure that the power generation device always floats on the sea surface, and in the positive floating state, the external seawater at least immerses half of the left container 2 and the right container 3.

[0046] The bottom of the float 1 is connected to a weight block 14 on the seabed through a cable 13. The power generation device can be fixed in a certain sea area through the weight block 14 on the seabed and the cable 13, so as to maximize the use of wave energy.

[0047] like Figure 1 and Figure 2 As shown, the left container 2 and the right container 3 are both identical ellipsoidal containers, and the long axes of the left container 2 and the right container 3 are arranged in the vertical direction; since the outer shapes of the left container 2 and the right container 3 are ellipsoidal structures with a large middle cross-sectional area and small top and bottom cross-sectional areas, when the power generation device is shaken by waves, the liquid levels in the left chamber and the right chamber can rise or fall faster, thereby achieving a better energy recovery effect of the airflow in the left and right chambers.

[0048] The liquid level sensor 12 is installed at the 1 / 2 height of the inner wall of the left container 2, and is used to detect the liquid level in the left container 2; the water supply pump 9 is fixedly installed in the float 1 through the bracket 10, and the bracket 10 is fixedly installed inside the float 1, and the water supply pump 9 is fixedly connected to the bracket 10; the water pipe 11 includes an inlet pipe and an outlet pipe; the water inlet of the water supply pump 9 is connected to the inlet pipe, and the water outlet is connected to the outlet pipe; the inlet pipe is immersed in the seawater outside the left container 2 and the right container 3; the outlet pipe is connected to the right chamber of the right container 3; the water supply pump 9, the inlet pipe, the outlet pipe and the liquid level sensor 12 constitute a water supply system, which is used to replenish seawater into the right container 3. The purpose of setting the liquid level sensor 12 is to detect the remaining liquid level in the left and right chambers. The liquid level sensor 12 outputs a signal to control the start and stop of the water supply pump 9 according to the received liquid level information in the left and right chambers.

[0049] When the float 1, the left container 2, the right container 3, the left exhaust pipe 4, the right exhaust pipe 5, the connecting pipe 6, the fixing ring 7, the three turbine generators 8, the water supply pump 9, the bracket 10, the water inlet pipe, the water outlet pipe and the liquid level sensor 12 are completely immersed in seawater, the total buoyancy generated is slightly greater than the total gravity, so that the power generation device just floats on the sea surface, and the liquid at least immerses half of the left and right containers in the positive floating state.

[0050] Figure 5 The three working states of the power generation device are illustrated. For the convenience of explanation, in the embodiment of the present invention, when the power generation device shakes to the left, that is, the draft of the left container 2 is greater than that of the right container 3, it is in a left-leaning state; when the power generation device shakes to the right, that is, the draft of the left container 2 is less than that of the right container 3, it is in a right-leaning state; when the drafts of the left container 2 and the right container 3 are equal, the power generation device is in a positive floating state.

[0051] When there are waves on the sea, the waves will rise and fall periodically, and the power generation device will shake under the action of the waves. The liquid in the left container 2 and the right container 3 will also shake under the action of the waves, causing the water level in the left chamber or the right chamber to rise or fall. Figure 6 As shown, when the power generation device tilts to the right, the liquid in the left chamber flows to the right chamber through the connecting pipe 6. At this time, the turbine generator 8 in the connecting pipe 6 rotates to generate electricity due to the impact of the water flow. When the power generation device tilts to the right, the liquid in the left chamber flows to the right chamber, and the free liquid level of the liquid in the right container rises. The rising liquid level causes the upper gas space in the right chamber to be compressed, and the pressure increases, thereby squeezing out the air above the right chamber, and then the airflow discharged to the outside drives the turbine generator 8 in the right exhaust pipe 5 to rotate and generate electricity; at the same time, the free liquid level of the liquid in the left chamber decreases, and the lowering of the liquid level causes the upper gas space in the left chamber to be stretched, forming a negative pressure, so that the outside air squeezes into the left chamber, and then the airflow entering the left chamber drives the turbine generator 8 in the left exhaust pipe 4 to rotate, thereby generating electricity.

[0052] like Figure 7 As shown, when the power generation device tilts to the left, the liquid in the right chamber flows to the left chamber through the connecting pipe 6. At this time, the turbine generator 8 in the connecting pipe 6 rotates due to the impact of the water flow to generate electricity; when the power generation device tilts to the left, the liquid in the right chamber flows to the left chamber, and the free liquid level of the liquid in the left chamber rises. The rising liquid level causes the upper gas space in the left chamber to be compressed, and the pressure increases, thereby discharging the air in the left chamber, and then the airflow discharged to the outside drives the turbine generator 8 in the left exhaust pipe 4 to rotate, thereby generating electricity; at the same time, the free liquid level of the liquid in the right chamber decreases, and the lowered liquid level causes the upper gas space in the right chamber to be stretched, forming a negative pressure, so that the outside air squeezes into the right chamber, and then the airflow entering the right chamber drives the turbine generator 8 in the right exhaust pipe 5 to rotate, thereby generating electricity.

[0053] Under the action of waves, the power generation device recovers the wave energy and converts it into the liquid kinetic energy of the liquid in the connecting pipe 6 and the fluid kinetic energy of the air in the left and right exhaust pipes. The energy of the two fluids can be recovered simultaneously through the connecting pipe 6 and the turbine generator 8 in the left and right exhaust pipes and converted into electrical energy, which greatly improves the utilization rate of wave energy in the ocean.

[0054] Affected by sea breeze and air pressure, waves will form periodic ups and downs, causing the wave vibration type internal flow energy power generation device to shake continuously, that is, left-leaning movement and right-leaning movement will alternate. Therefore, the above-mentioned power generation device can continuously generate electricity under the action of waves, and the power generation effect is better.

[0055] With the continuous operation of the wave vibration type internal flow energy power generation device, the liquid in the left and right chambers evaporates continuously. When the liquid level sensor 12 detects that the liquid level in the left and right chambers is lower than the position of the liquid level sensor 12 in the positive floating state, the liquid level sensor 12 will output a signal to control the water supply pump 9 to start. Under the boosting effect of the water supply pump 9, seawater flows into the right chamber through the water pipe 11 to replenish the liquid in the left and right chambers, so as to avoid the liquid level in the left and right chambers being too low and affecting the power generation effect. The above-mentioned liquid level sensor 12 is arranged at 1 / 2 of the inner wall surface of the left container 2, which can ensure that there is a sufficient amount of liquid in the wave vibration type internal flow energy power generation device, and avoid the liquid level in the left and right chambers being too low, which affects the flow effect of the liquid in the left and right chambers. In addition, since the external shape of the left and right containers is an ellipsoid with a large cross-sectional area in the middle and small cross-sectional areas on both sides, the liquid level sensor 12 is arranged at 1 / 2 of the inner wall surface of the left container 2. When the wave vibration type internal flow energy power generation device is shaken by the action of waves, the liquid levels in the left and right chambers can rise or fall faster, thereby making the airflow recovery effect in the left and right chambers better.

[0056] like Figure 4 As shown, the wave vibration type internal flow energy power generation device is fixed in a designated sea area with richer wave energy by means of cables 13 and weights 14. Compared with the traditional wave energy power generation device, it does not need to be built on the coastline, which effectively reduces the restrictions of environmental factors on the power generation device and improves the flexibility of the power generation device.

[0057] As the waves rise and fall, the wave vibration type internal flow energy power generation device shakes, and the liquid in the left chamber and the right chamber also shakes under the action of the waves, causing the water level in the left chamber or the right chamber to rise or fall, and the sea current flows back and forth in the connecting pipe 6. The turbine generator 8 in the connecting pipe 6 rotates under the impact of the water flow to generate electricity. While the left chamber and the right chamber are shaking, the free liquid surface of the liquid in the left and right chambers will rise and fall to a great extent, respectively, so that positive pressure is formed in the left and right chambers to discharge the airflow or negative pressure is generated to suck in the outside air. The inlet and outlet airflow in the left chamber or the right chamber drives the turbine generator 8 in the left exhaust pipe and the right exhaust pipe to rotate and generate electricity.

[0058] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A wave vibration type internal flow energy power generation device, characterized in that: It includes a float, a left container, a right container, a connecting pipe and a turbine generator; The left container has a left chamber inside, and a left exhaust pipe communicating with the left chamber is provided on the top; the right container has a right chamber inside, and a right exhaust pipe communicating with the right chamber is provided on the top; the left container and the right container are symmetrically arranged on the left and right sides, and the communicating pipe is fixedly connected to the bottom of the left container and the right container; the communicating pipe communicates the left chamber with the right chamber; the left chamber and the right chamber are both filled with liquid, and the liquid in the left chamber and the right chamber accounts for more than 1 / 2 of the total volume of the left chamber and the right chamber; The turbine generator is installed in the left exhaust pipe, the right exhaust pipe and the connecting pipe; The float is made of lightweight material, fixedly installed on the connecting pipe, and located between the left container and the right container; The power generation device can float on the sea surface, and in a floating state, the external seawater at least immerses half of the left container and the right container.

2. The power generation device according to claim 1, characterized in that: The turbine generator is a bidirectional turbine generator which can rotate in the same direction under the action of bidirectional fluid.

3. The power generation device according to claim 1, characterized in that: It also includes a liquid level sensor, a water supply pump, a water inlet pipe, and a water outlet pipe; The liquid level sensor is installed at 1 / 2 height of the inner wall of the left container, and is used to detect the liquid level in the left container; The water replenishment pump is fixedly installed in the float; the water inlet of the water replenishment pump is connected to the water inlet pipe, and the water outlet is connected to the water outlet pipe; the water inlet pipe is immersed in seawater; the water outlet pipe is connected to the right chamber; The water replenishment pump, the water inlet pipe, the water outlet pipe and the liquid level sensor constitute a water replenishment system for replenishing seawater into the right container.

4. The power generation device according to claim 1, characterized in that: Also includes a bracket fixedly installed inside the float; The water replenishment pump is fixedly connected to the bracket.

5. The power generation device according to claim 1, characterized in that: The left container and the right container are both ellipsoidal containers, and the long axes are arranged along the vertical direction.

6. The power generation device according to claim 1, characterized in that: Also included is a retaining ring; One end of the fixing ring is fixedly connected to the float, and the other end is fixedly connected to the connecting pipe.

7. The power generation device according to any one of claims 1 to 6, characterized in that: Also included are cables and weights; The weight is located on the seafloor; The top end of the cable is connected to the float, and the bottom end is connected to the weight.

8. The power generation device according to any one of claims 1 to 6, characterized in that: The liquid is seawater.

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