Submerged floating tunnel with wave energy power generation device

Abstract

The present invention discloses an underwater suspended tunnel with a wave energy power generation device, which includes a suspended tunnel tube body and a plurality of floating cylinders. The top surface of the floating cylinder is a stepped surface where the two semi-circular partial areas symmetrically arranged in the radial direction of the suspended tunnel tube body are lower than the middle partial area, and a plurality of wave energy power generation devices are evenly distributed along the semi-circular partial area; the wave energy power generation device includes a column, a PTO system is arranged in the cylindrical bin of the column, a float is coaxially sleeved on the column, the upper end of the PTO system is connected to the float, and a spring is connected between the bottom of the column and the top surface of the floating cylinder. The wave energy power generation device in the present invention can disrupt the flow field, thereby playing a role in weakening wave impact and wave dissipation, enhancing the safety and stability of the suspended tunnel system; at the same time, it supplies electric energy for the daily operation of the suspended tunnel, saves electric energy costs, and reduces the total investment cost; the wave energy power generation device directly obtains green and renewable energy for power generation, accelerates the pace of reducing carbon emissions, and reduces environmental pollution.

Description

Technical Field

[0001] The present invention relates to the technical fields of ocean engineering technology and wave energy power generation technology, and specifically relates to a submerged floating tunnel capable of arranging a wave energy power generation device. Background Art

[0002] In order to promote coordinated economic development and improve the transportation pattern in coastal areas, it is urgent to construct a cross-sea passage. Due to the harsh marine environment and complex seabed topography, the technical difficulty and construction cost of building a cross-sea bridge and a immersed tube tunnel are extremely high. The submerged floating tunnel has gradually become the preferred structural form for cross-sea passage construction due to its flexible structural form, low cost per unit length, and little influence by adverse weather conditions.

[0003] A submerged floating tunnel is involved in the construction of a cross-sea passage. Generally, the main part of the submerged floating tunnel structure includes a floating tunnel tube body, a buoy, and a connecting structure. The floating tunnel tube body is suspended below the buoy through the connecting structure. Adjusting the ballast of the buoy provides the required buoyancy for the submerged floating tunnel to ensure that the tunnel floats in the water. In order not to affect the passage of surface vessels, the buoys are arranged axially along the tunnel tube body. How to ensure safety and stability is the core issue concerned in the construction of the submerged floating tunnel. Waves are one of the main factors affecting the safety of the submerged floating tunnel. The wave impact induces the movement of the buoy, causing a large response of the entire system and seriously threatening the structural safety. Therefore, measures need to be taken to weaken the impact of waves on the buoy. Summary of the Invention

[0004] In view of the above-mentioned prior art, the present invention provides a submerged floating tunnel with a wave energy power generation device, which converts wave energy into electrical energy through the wave energy power generation device arranged on the buoy, alleviates the impact of waves on the buoy, and the electrical energy generated by the wave energy power generation device can also be supplied to the submerged floating tunnel to ensure the daily operation of the submerged floating tunnel.

[0005] A suspended tunnel in water with a wave energy power generation device proposed by the present invention includes two suspended tunnel tubes arranged in parallel and connected as a whole, and a plurality of floats arranged along the axial direction of the suspended tunnel tubes. The suspended tunnel tubes are suspended below the plurality of floats through a connecting device; the top surface of the float is a convex-shaped stepped surface with the two semi-circular partial areas symmetrically arranged in the radial direction of the suspended tunnel tube being lower than the middle partial area, and a plurality of wave energy power generation devices are evenly distributed along the semi-circumference of the semi-circular partial area; the wave energy power generation device includes a column, the column is provided with a cylindrical bin, a PTO system is arranged in the cylindrical bin, a float is coaxially sleeved on the column, the upper end of the PTO system is connected to the float, the bottom of the column is connected to the upper end of a spring, and the lower end of the spring is fixed to the semi-circular partial area of the top surface of the float; the top surfaces of the columns of all the wave energy power generation devices are lower than the water surface, and the water surface is lower than the plane where the middle partial area of the top surface of the float is located; the float collects wave energy and converts it into mechanical energy of axial movement, and the PTO system is used to convert the mechanical energy of the float under the action of waves into electric energy.

[0006] Furthermore, for the suspended tunnel in water with a wave energy power generation device of the present invention, where:

[0007] A plurality of wave energy power generation devices evenly distributed along the semi-circumference of the semi-circular partial area form an array point-absorbing wave energy power generation device.

[0008] The buffering effect provided by the spring prevents the force on the wave energy power generation device from exceeding the threshold.

[0009] Under the action of waves, relative movement occurs between the column and the float.

[0010] A power supply device is arranged in the suspended tunnel tube, and a power grid system connected to the power supply device is arranged inside the float and the connecting device. The power grid system includes an electric energy storage and release device; the PTO system includes a motor and a voltage stabilizing device; the float converts the collected wave energy into mechanical energy and transmits it to the PTO system, and the PTO system converts the mechanical energy into steadily output electric energy, thereby playing a role in wave elimination and being beneficial to the in-place stability of the float; the wave energy power generation device ensures the stable operation of the power supply device through the electric energy storage and release device in the connecting device.

[0011] The float includes an outer layer of polyurethane material, and the outer layer is filled with composite foam material.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The array point - suction wave energy power generation device in the present invention can disrupt the flow field, thereby weakening the impact of waves, reducing the motion response of the buoyant - type suspension tunnel under complex sea conditions, and enhancing the safety and stability of the suspension tunnel system; a power grid is arranged inside the buoy, which is directly connected to the electrical equipment inside the tunnel, so as to supply electrical energy for the daily operation of the suspension tunnel, save the electrical energy cost, and further reduce the total investment cost; the wave energy power generation device directly obtains green and renewable energy for power generation, accelerates the pace of reducing carbon emissions, reduces environmental pollution, meets the requirements of green environmental protection, and promotes the achievement of the national dual - carbon goal.

[0014] In summary, by arranging an array - type wave energy power generation device on the buoy of the suspension tunnel in the present invention, it not only weakens the impact of waves on the buoy and improves the safety and stability of the suspension tunnel system, but also converts wave energy into electrical energy to supply the daily operation of the suspension tunnel, significantly enhancing the economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural cross - section view of the underwater suspension tunnel of the present invention;

[0016] Figure 2 It is a schematic layout view of the wave energy power generation device in the present invention;

[0017] Figure 3 is Figure 2 The schematic structural view of the wave energy power generation device shown.

[0018] In the figure: 1 - wave energy power generation device, 2 - buoy, 21 - middle part area, 22 - semi - circular part area, 3 - connecting device, 4 - suspension tunnel pipe body, 5 - spring, 6 - column, 7 - PTO system, 8 - float. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solution of the present invention will be described in detail in combination with the drawings and specific embodiments.

[0020] As Figure 1 shown, a proposed underwater suspension tunnel with a wave energy power generation device in the present invention includes two parallel - arranged and integrally - connected suspension tunnel pipe bodies 4 and a plurality of buoys 2 arranged along the axial direction of the suspension tunnel pipe body. The suspension tunnel pipe body 4 is suspended below the plurality of buoys 2 through a connecting device 3; as Figure 2 shown, the top surface of the buoy 2 is a convex - shaped stepped surface where the two - side semi - circular part areas 22 are lower than the middle part area 21, which is radially symmetrically arranged according to the suspension tunnel pipe body 4. A plurality of wave energy power generation devices 1 are evenly distributed along the semi - circumference of the semi - circular part area. The plurality of wave energy power generation devices 1 evenly distributed along the semi - circumference of the semi - circular part area form an array point - suction wave energy power generation device. As Figure 3As shown, the wave energy power generation device 1 includes a column 6. The top surface of the column 6 of all wave energy power generation devices 1 is lower than the water surface, and the water surface is lower than the plane 21 of the middle part area of the top surface of the floating barrel 2. The column 6 is provided with a cylindrical bin, and a PTO system 7 is arranged in the cylindrical bin. A float 8 is coaxially sleeved on the column 6. Under the action of waves, relative movement occurs between the column 6 and the float 8. The upper end of the PTO system 7 is connected to the float 8, and the bottom of the column 6 is connected to the upper end of a spring 5. The lower end of the spring 5 is fixed to the semi-circular part area of the top surface of the floating barrel 2. That is, the wave energy power generation device 1 is connected to the floating barrel 2 through the spring 5, and the spring 5 can provide a buffering effect to prevent the array point-absorbing wave energy power generation device 1 from being damaged due to the force exceeding the threshold. A power supply device is arranged in the suspended tunnel pipe body 4, the interior of the connecting device 3 is made watertight, and a power grid system connected to the power supply device is arranged inside the floating barrel 2 and the connecting device 3. The power grid system includes an electric energy storage and release device.

[0021] The floating barrel 2 floats near the ocean water level. The suspended tunnel pipe body 4 is connected to it through a connecting device 3. The floating barrel 2 provides buoyancy for the suspended tunnel pipe body 4 to ensure the in-situ stability of the suspended tunnel. The floating barrel 2 is divided into two layers. The inner layer is filled with composite foam materials, which is the main source of buoyancy. The outer layer is made of polyurethane materials to provide an anti-corrosion effect for the floating barrel 2.

[0022] Under the action of waves, the float 8 of the array point-absorbing wave energy power generation device composed of multiple wave energy power generation devices 1 will generate vertical reciprocating motion along the column 6 where it is located. The float 8 collects wave energy and thus converts wave energy into mechanical energy of axial motion. The PTO system 7 is a power generation system, including a motor and a voltage stabilizing device. The float 8 converts the collected wave energy into mechanical energy and transmits it to the PTO system 7. The PTO system 7 is responsible for converting the mechanical energy of the float 8 under the action of waves into stably output electric energy. This process of converting wave energy into electric energy consumes wave energy, thereby playing a wave-damping role, which is beneficial to the in-situ stability of the floating barrel 2. The wave energy power generation device 1 ensures the stable operation of the power supply device in the suspended tunnel through the power grid system (including an electric energy storage and release device) in the connecting device 3.

[0023] Although the present invention has been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many deformations without departing from the purpose of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. An underwater suspended tunnel with a wave energy power generation device, comprising two parallel and integrally connected suspended tunnel tubes (4) and a plurality of floating barrels (2) arranged along the axial direction of the suspended tunnel tubes. The suspended tunnel tubes (4) are suspended below the plurality of floating barrels (2) through a connecting device (3); characterized in that, The top surface of the floating barrel (2) is a convex-shaped stepped surface with the two semi-circular partial regions symmetrically arranged in the radial direction of the suspended tunnel tube (4) being lower than the middle partial region. A plurality of wave energy power generation devices (1) are evenly distributed along the semi-circumference of the semi-circular partial region; The wave energy power generation device (1) includes a column (6). The column (6) is provided with a cylindrical bin. A PTO system (7) is arranged in the cylindrical bin. A float (8) is coaxially sleeved on the column (6). The upper end of the PTO system (7) is connected to the float (8). The bottom of the column (6) is connected to the upper end of a spring (5). The lower end of the spring (5) is fixed to the semi-circular partial region of the top surface of the floating barrel (2); The top surfaces of the columns (6) of all the wave energy power generation devices (1) are located in the same plane A, and this plane A is lower than the plane (21) where the middle partial region of the top surface of the floating barrel (2) is located; The top surfaces of the columns (6) of all the wave energy power generation devices (1) are lower than the water surface, and the water surface is lower than the plane (21) where the middle partial region of the top surface of the floating barrel (2) is located; A plurality of wave energy power generation devices (1) evenly distributed along the semi-circumference of the semi-circular partial region form an array point-absorbing wave energy power generation device; The buffering effect provided by the spring (5) prevents the force on the wave energy power generation device (1) from exceeding the threshold; Under the action of waves, relative movement occurs between the column (6) and the float (8); The float (8) collects wave energy and converts it into mechanical energy of axial movement. The PTO system (7) is used to convert the mechanical energy of the float (8) under the action of waves into electrical energy.

2. The underwater suspended tunnel with a wave energy power generation device according to claim 1, characterized in that A power supply device is arranged inside the suspended tunnel tube (4). A power grid system connected to the power supply device is arranged inside the floating barrel (2) and the connecting device (3). The power grid system includes an electric energy storage and release device; The PTO system (7) includes a motor and a voltage stabilizing device; The float (8) converts the collected wave energy into mechanical energy and transmits it to the PTO system (7). The PTO system (7) converts the mechanical energy into stably output electrical energy, thereby playing a role in wave elimination and being beneficial to the in-place stability of the floating barrel (2); The wave energy power generation device (1) ensures the stable operation of the power supply device through the electric energy storage and release device in the connecting device (3).

3. The suspended tunnel in water with a wave energy power generation device according to claim 1, characterized in that, The floating barrel (2) includes an outer layer of polyurethane material, and the outer layer is filled with composite foam material.

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