Barycentrically stabilized hydroelectric power plant

Abstract

The application discloses a gravity center stabilizing type water power generation device, which comprises a shell assembly, a nano power generation assembly, a counterweight assembly, a solar power generation film, a transmission mechanism and an energy storage device. The counterweight assembly comprises a counterweight ball, an annular counterweight, an elastic rope, a spring and a cylindrical guide, the counterweight ball is suitable to be placed in water, the annular counterweight is sleeved on the cylindrical guide, one end of the cylindrical guide is connected with the counterweight ball through the elastic rope, and the other end of the cylindrical guide is connected with one end of the transmission mechanism through the spring. A rotor generator is connected with the other end of the transmission mechanism. The nano power generation assembly is used for rubbing power generation under the impact of waves. The solar power generation film is covered on the top wall of the shell. The energy storage device is electrically connected with the rotor generator, the nano power generation assembly and the solar power generation film respectively, so as to store electric energy. The application realizes wave motion driving generator power generation, vibration rubbing power generation and solar power generation, improves the energy acquisition efficiency of the power generation device, and makes the power generation mode more various.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power generation devices, in particular to a gravity-stable water power generation device. BACKGROUND

[0002] Wave energy in the ocean has the advantages of large energy reserves and wide distribution, and is considered a high-quality ocean resource. Low energy conversion efficiency of wave energy power generation devices is one of the problems that need attention.

[0003] The existing wave energy power generation device, such as the invention patent with publication number CN115111109A, discloses a hanging type hydraulic wave energy power generation float, which comprises a float body, a spring return hydraulic cylinder, an anchor chain, and an energy conversion device. The bottom of the float body is connected to the top of the cylinder body of the spring return hydraulic cylinder through a steel cable, the piston rod of the spring return hydraulic cylinder extends downward and is fixed to the seabed through the anchor chain; the hydraulic oil circuit in the spring return hydraulic cylinder is connected to the hydraulic pipeline in the energy conversion device, the output end of the hydraulic pipeline is connected to the hydraulic motor generator in the energy conversion device; the hydraulic oil circuit in the spring return hydraulic cylinder is connected to the oil tank.

[0004] The power generation equipment utilizes the float body, spring return hydraulic cylinder, and energy conversion device to realize wave energy generation float mechanical energy, and then generates hydraulic energy through the spring to drive the generator, realizing the conversion from ocean wave energy to float mechanical energy, from float mechanical energy to hydraulic energy, and from hydraulic energy to electrical energy. However, the power generation equipment does not have a counterweight device, the overall structure is relatively simple, the gravity center is unstable, it cannot adapt to the ocean environment with large wind and waves, and the wave energy utilization method is single, so the utilization rate is low. SUMMARY

[0005] The main purpose of the present application is to provide a gravity-stable water power generation device, which aims to improve the gravity stability of the water power generation device to adapt to the ocean environment with large wind and waves, and to improve the wave energy utilization rate.

[0006] To achieve the above purpose, the present application provides a gravity-stable water power generation device, which comprises:

[0007] The shell assembly comprises an outer shell, and a hollow partition is formed in the outer shell;

[0008] The counterweight assembly comprises a counterweight ball, an annular counterweight, an elastic rope, a spring, and a cylindrical lead, the counterweight ball is suitable for being placed in water, the annular counterweight is installed at the bottom of the hollow partition and is sleeved on the cylindrical lead, one end of the cylindrical lead is connected to the counterweight ball through the elastic rope, and the other end of the cylindrical lead is connected to one end of the transmission mechanism through the spring;

[0009] a rotor generator connected with the other end of the transmission mechanism for converting mechanical energy into electrical energy;

[0010] a nano power generation assembly arranged in the shell and above the rotor generator for jumping and rubbing to generate electricity under the impact of waves;

[0011] a solar power film covering the top wall of the shell for converting solar energy into electrical energy; and

[0012] an energy storage device electrically connected with the rotor generator, the nano power generation assembly and the solar power film respectively for storing electrical energy.

[0013] Optionally, the rotor generator comprises a first generator and a second generator.

[0014] The transmission mechanism comprises a first transmission rack guide rail, a second transmission rack guide rail, a first transmission gear, a second transmission gear, a first generator gear, a second generator gear, a first transmission rack, a second transmission rack, a clockwork spring, and a clockwork spring shaft.

[0015] The first transmission rack is slidingly arranged on the first transmission rack guide rail, the second transmission rack is slidingly arranged on the second transmission rack guide rail, the first transmission gear is engaged with the first transmission rack, the second transmission gear is engaged with the second transmission rack, the clockwork spring is sleeved on the clockwork spring shaft, the first transmission gear and the second transmission gear are respectively fixed on both ends of the clockwork spring shaft, the first transmission rack is engaged with the first generator gear, the second transmission rack is engaged with the second generator gear, and the first generator gear and the second generator gear are respectively fixed on the input shafts of the first generator and the second generator through one-way bearings.

[0016] Optionally, a partition plate is arranged in the shell at the upper and lower ends of the transmission mechanism to form the hollow partition layer, and the clockwork spring shaft is supported on the partition plate through a shaft support.

[0017] Optionally, the nano power generation assembly comprises a nano rubbing layer and a plurality of rubbing oscillators, the nano rubbing layer comprises a nano rubbing anode layer and a nano rubbing cathode layer arranged at intervals, and the rubbing oscillators are arranged between the nano rubbing anode layer and the nano rubbing cathode layer.

[0018] Optionally, the material of the friction vibrator is styrene, the material of the nano-friction anode layer is aluminum foil, and the nano-friction cathode layer comprises an aluminum foil layer and a polyvinyl chloride film attached to the aluminum foil layer; the polyvinyl chloride film is in contact with the friction vibrator, the aluminum foil layer is connected to the cathode of the energy storage device through a nano-power generation cathode wire, and the nano-friction anode layer is connected to the anode of the energy storage device through a nano-power generation anode wire.

[0019] In the technical scheme of the application, the gravity-stable water power generation device comprises a shell assembly, a nano-power generation assembly, a counterweight assembly, a solar power generation film, a transmission mechanism and an energy storage device. The shell assembly comprises an outer shell, and a hollow partition is formed in the outer shell. The counterweight assembly comprises a counterweight ball, an annular counterweight, an elastic rope, a spring and a cylindrical guide, the counterweight ball is adapted to be placed in water, the annular counterweight is installed at the bottom of the hollow partition and is sleeved on the cylindrical guide, one end of the cylindrical guide is connected to the counterweight ball through the elastic rope, and the other end of the cylindrical guide is connected to one end of the transmission mechanism through the spring. A rotor generator is connected to the other end of the transmission mechanism for converting mechanical energy into electrical energy. The nano-power generation assembly is arranged in the outer shell and above the rotor generator for jumping and rubbing to generate power under the impact of waves. The solar power generation film is covered on the top wall of the outer shell for converting solar energy into electrical energy. The energy storage device is electrically connected to the rotor generator, the nano-power generation assembly and the solar power generation film respectively for storing electrical energy.

[0020] The water power generation device of the application has the counterweight ball and the annular counterweight, so that the gravity center of the power generation device is concentrated at the bottom of the device, the gravity stability is improved, and the device is adapted to the marine environment with large wind and waves. When the counterweight ball moves with the waves, relative movement is generated, the elastic rope is stretched or relaxed with the relative movement of the counterweight ball, when the elastic rope is stretched, the elastic rope pulls the cylindrical guide to move downward, and then the transmission mechanism transmits the power to generate mechanical energy rotating in one direction and drive the rotating shaft of the generator to rotate in one direction, so as to generate electrical energy. In addition, the solar power generation film is covered on the top surface of the outer shell of the device to realize solar power generation. Furthermore, the nano-power generation assembly is arranged in the outer shell of the device to realize friction power generation. The application improves the energy acquisition efficiency of the power generation device, the power generation mode is more diversified, and the utilization rate of wave energy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0022] Figure 1is a structural schematic view of an embodiment of the gravity center stabilizing type water power generation device of the present application;

[0023] Figure 2 is an internal structural view of an embodiment of the gravity center stabilizing type water power generation device of the present application;

[0024] Figure 3 is a structural schematic view of a transmission mechanism in an embodiment of the gravity center stabilizing type water power generation device of the present application;

[0025] Figure 4 is a structural schematic view of a nano power generation assembly in an embodiment of the gravity center stabilizing type water power generation device of the present application;

[0026] Figure 5 is a structural schematic view of a rotor generator in an embodiment of the gravity center stabilizing type water power generation device of the present application;

[0027] Figure 6 is a structural schematic view of another angle of a rotor generator in an embodiment of the gravity center stabilizing type water power generation device of the present application;

[0028] Figure 7 is a wiring schematic view of an embodiment of the gravity center stabilizing type water power generation device of the present application;

[0029] Figure 8 is a motion relationship view of a transmission mechanism and a counterweight assembly in an embodiment of the gravity center stabilizing type water power generation device of the present application;

[0030] Figure 9 is another motion relationship view of a transmission mechanism and a counterweight assembly in an embodiment of the gravity center stabilizing type water power generation device of the present application;

[0031] Figure 10 is a power generation principle view of a nano power generation assembly in an embodiment of the gravity center stabilizing type water power generation device of the present application.

[0032] BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 10, housing assembly; 20, nanometer power generation assembly; 30, counterweight assembly; 40, solar power film; 50, transmission mechanism; 60, energy storage device; 70, rotor generator; 80, rectifier; 11, rotating shaft support; 12, hollow partition; 13, outer shell; 21, friction vibrator; 22, nanometer friction layer; 221, nanometer friction anode layer; 222, nanometer friction cathode layer; 31, counterweight ball; 32, annular counterweight; 33, elastic rope; 34, spring; 35, cylindrical lead; 51, first transmission gear; 52, second transmission gear; 53, first generator gear; 54, second generator gear; 55, first transmission rack; 551, first transmission rack guide rail; 56, second transmission rack; 561, second transmission rack guide rail; 57, one-way bearing; 58, clock spring; 59, clock spring rotating shaft; 61, nanometer power generation anode line; 62, nanometer power generation cathode line; 63, rotor generator anode line; 64, rotor generator cathode line; 65, solar power film anode line; 66, solar power film cathode line; 68, battery.

[0034] The objectives, functional characteristics and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0036] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0037] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0038] The present application provides a gravity center stabilizing type water power generation device.

[0039] Referring to Figures 1 to 6 In an embodiment of the present application, the gravity center stabilizing type water power generation device includes a shell assembly 10, a nano power generation assembly 20, a counterweight assembly 30, a solar power film 40, a transmission mechanism 50 and an energy storage device 60. The shell assembly 10 includes an outer shell 13, and a hollow partition 12 is formed in the outer shell 13. The counterweight assembly 30 includes a counterweight ball 31, an annular counterweight 32, an elastic rope 33, a spring 34 and a cylindrical guide 35. The counterweight ball 31 is adapted to be placed in water. The annular counterweight 32 is installed at the bottom of the hollow partition 12 and is sleeved on the cylindrical guide 35. One end of the cylindrical guide 35 is connected with the counterweight ball 31 through the elastic rope 33, and the other end of the cylindrical guide 35 is connected with one end of the transmission mechanism 50 through the spring 34. A rotor generator 70 is connected with the other end of the transmission mechanism 50, for converting mechanical energy into electrical energy. The nano power generation assembly 20 is arranged in the outer shell 13 and above the rotor generator 70, for jumping and rubbing to generate electricity under the impact of waves. The solar power film 40 is covered on the top wall of the outer shell 13, for converting solar energy into electrical energy. The energy storage device 60 is electrically connected with the rotor generator 70, the nano power generation assembly 20 and the solar power film 40 respectively, for storing electrical energy.

[0040] In this embodiment, the outer shell 13 of the shell assembly 10 can be arranged in an inverted circular truncated cone shape, and at least one partition can be arranged inside the outer shell 13 along the height direction of the outer shell 13 to form the hollow partition 12, which is located at the bottom of the inner cavity of the outer shell 13. The rotor generator 70, the transmission mechanism 50, and the nano power generation assembly 20 can be mounted on the partition. Preferably, the inner cavity of the outer shell 13 is provided with a partition at the upper end and the lower end of the transmission mechanism 50, the lower end of the transmission mechanism 50 is mounted on the lowermost partition, the upper end of the transmission mechanism 50 is mounted on the middle partition, the rotor generator 70 is mounted on the middle partition, and a partition can also be arranged at the top of the outer shell 13, and the nano power generation assembly 20 is mounted on the uppermost partition.

[0041] The number of the rotor generators 70 can be one, two, or more, which is not limited herein.

[0042] In this embodiment, the energy storage device 60 can include a battery 68 and a rectifier 80, the output ends of the rotor generator 70, the nano power generation assembly 20, and the solar power film 40 are electrically connected to the input end of the rectifier 80, and the output end of the rectifier 80 is electrically connected to the battery 68.

[0043] In this embodiment, the solar power film 40 can be fully attached to the upper surface of the device outer shell 13, absorbs sunlight to generate electric energy, and stores the generated electric energy into the battery 68 of the energy storage device 60 through the rectifier 80.

[0044] The water power generation device of the present application improves the stability of the power generation device in water by arranging the counterweight ball 31 and the annular counterweight 32, which is arranged in the hollow partition 12 at the bottom of the outer shell 13, so that the gravity center of the power generation device is concentrated at the bottom of the device, and the stability of the power generation device in water is improved to adapt to the marine environment with large waves. When the counterweight ball 31 moves with the waves, the elastic rope 33 generates tension or relaxation with the relative movement of the counterweight ball 31. When the tension is generated, the tension pulls the cylindrical guide 35 to move downward, and then the power is transmitted through the transmission mechanism 50 to generate unidirectional rotating mechanical energy and drive the rotating shaft of the generator to rotate unidirectionally, thereby generating electric energy. In addition, the solar power film 40 is arranged on the top surface of the outer shell 13 of the device to realize solar power generation. Furthermore, the nano power generation assembly 20 is arranged in the outer shell 13 of the device to realize friction power generation. The present application improves the energy generation efficiency of the power generation device, the power generation method is more diversified, and the utilization rate of wave energy is improved.

[0045] To reduce energy loss and further improve the utilization rate of wave energy, in an embodiment, the rotor generator 70 can include a first generator and a second generator. Referring to Figures 3 to 9, the transmission mechanism 50 can include a first transmission rack guide rail 551, a second transmission rack guide rail 561, a first transmission gear 51, a second transmission gear 52, a first generator gear 53, a second generator gear 54, a first transmission rack 55, a second transmission rack 56, a clockwork spring 58, and a clockwork spring shaft 59. The first transmission rack 55 is slidingly arranged on the first transmission rack guide rail 551, the second transmission rack 56 is slidingly arranged on the second transmission rack guide rail 561, the first transmission gear 51 is engaged with the first transmission rack 55, the second transmission gear 52 is engaged with the second transmission rack 56, the clockwork spring 58 is sleeved on the clockwork spring shaft 59, the first transmission gear 51 and the second transmission gear 52 are respectively fixed on two ends of the clockwork spring shaft 59, the first transmission rack 55 is engaged with the first generator gear 53, and the second transmission rack 56 is engaged with the second generator gear 54. The first generator gear 53 and the second generator gear 54 are respectively fixed on the input shafts of the first generator and the second generator through the one-way bearings 57.

[0046] In the embodiment, the first transmission rack 55 and the second transmission rack 56 are driven by the wave to rotate the first generator gear 53 and the second generator gear 54, and the first generator gear 53 and the second generator gear 54 are connected with the rotor generator 70 to generate electricity. Therefore, the mechanical energy can be converted into electrical energy through the rotor generator 70 when the power generation device moves up and down, and the conversion efficiency of the electrical energy is improved.

[0047] Referring to Figure 3 , in the embodiment, the clockwork spring shaft 59 is supported on the partition plate through the shaft support 11, so that the stability of the transmission mechanism 50 is ensured, and the stability of the electricity generation is improved. The rotation of the clockwork spring shaft 59 drives the rotor generator 70 to generate electricity. When the elastic rope 33 is relaxed, the clockwork spring 58 generates elastic restoring force to perform elastic recovery, and generates a certain rotation, which drives the clockwork spring shaft 59 to rotate. The rotation of the clockwork spring shaft 59 drives the rotor generator 70 to generate electricity, and the electricity generated by the rotor generator 70 is stored in the energy storage device 60.

[0048] It should be noted that, as Figure 5 shown, the power generation device has two one-way bearings 57, which are coaxially connected with the first transmission gear 51 and the second transmission gear 52, respectively. The one-way bearings 57 are connected with the shaft of the rotor generator 70, and the shaft is locked in clockwise rotation and idles in counterclockwise rotation. The electrical energy generated by the rotor generator 70, the electrical energy of the nano power generation assembly 20, and the electrical energy generated by the solar power film 40 are stored in the energy storage device 60.

[0049] In order to ensure the stability of the center of gravity of the water power generation device, referring to Figures 1 to 3The bottom wall of the shell 13 is provided with a through hole, which is coaxial with the cylindrical guide 35, and the spring shaft 59 is coaxial with the shaft hole of the shaft support 11.

[0050] Please refer to Figure 2 and Figure 10 In an embodiment, the nano power generation assembly 20 can include a nano friction layer 22 and a plurality of friction oscillators 21. The nano friction layer 22 includes a nano friction anode layer 221 and a nano friction cathode layer 222 arranged at intervals. The friction oscillators 21 are arranged between the nano friction anode layer 221 and the nano friction cathode layer 222.

[0051] In the embodiment, the material of the friction oscillators 21 can be styrene, and the material of the nano friction anode layer 221 can be aluminum foil. The nano friction cathode layer 222 includes an aluminum foil layer and a polyvinyl chloride film attached to the aluminum foil layer.

[0052] Further, the polyvinyl chloride film is in contact with the friction oscillators 21. The aluminum foil layer is connected to the anode of the battery 68 through a nano power generation anode line 61, and the nano friction anode layer 221 is connected to the anode of the battery 68 through a nano power generation anode line 61. In addition, in the embodiment, the rotor generator 70 is connected to the anode and cathode of the battery 68 through a rotor generator anode line 63 and a rotor generator cathode line 64, and the solar power generation film 40 is connected to the anode and cathode of the battery 68 through a solar power generation film anode line 65 and a solar power generation film cathode line 66. Figure 6

[0053] The friction power generation principle is that when the water power generation device is moved by wave force, the friction oscillators 21 inside the nano power generation assembly 20 jump, and when the friction oscillators 21 and the bottom aluminum foil fully rub or roll, the friction oscillators 21 will gain electrons and become electronegative, and the aluminum foil will lose electrons and become electropositive. When the friction oscillators 21 vibrate and fully touch the nano friction anode layer 221, the potential of the nano friction anode layer 221 will be higher than that of the nano friction cathode layer 222, and an electric current will flow from the nano friction anode layer 221 to the nano friction cathode layer 222 in the external circuit. When the friction oscillators 21 fall, the electric field of the system returns to potential balance, and the vibration of the friction oscillators 21 will cause the nano friction anode layer 221 and the nano friction cathode layer 222 to generate a potential change, generating an electric current in the external circuit. The rectifier 80 stores the generated electric energy in the battery 68.

[0054] ​To avoid seawater or rainwater from penetrating into the inside of the water power generation device to damage the components and ensure the normal operation of power generation, in an embodiment, the shell 13 can be made of a light corrosion-resistant waterproof material. The nanometer power generation assembly 20, the rotor generator 70, the energy storage device 60, the solar power generation film 40, etc. can be assembled on the partition plate in the shell 13 to prevent the nanometer power generation assembly 20, the rotor generator 70, the energy storage device 60, etc. from being corroded and damaged due to water.

[0055] In the embodiment, the surface of the counterweight ball 31 can be coated with a corrosion-resistant layer made of a material resistant to seawater and freshwater corrosion to improve the service life of the counterweight ball 31 and avoid the corrosion of the counterweight ball 31 to reduce the weight and affect the power generation efficiency.

[0056] The above description is only optional embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, etc. made under the inventive concept of the present application and using the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A center of gravity stabilized hydroelectric power plant, characterized by, The utility model relates to a wave power generation device, comprising: a housing assembly, including a shell, a hollow partition is formed in the shell; a weight assembly, including a weight ball, an annular weight, an elastic rope, a spring, a cylindrical guide, the weight ball is suitable for being placed in water, the annular weight is installed at the bottom of the hollow partition and is sleeved on the cylindrical guide, one end of the cylindrical guide is connected with the weight ball through the elastic rope, the other end of the cylindrical guide is connected with one end of a transmission mechanism through the spring; a rotor generator connected with the other end of the transmission mechanism for converting mechanical energy into electrical energy; the rotor generator includes a first generator and a second generator; the transmission mechanism includes a first transmission rack guide, a second transmission rack guide, a first transmission gear, a second transmission gear, a first generator gear, a second generator gear, a first transmission rack, a second transmission rack, a clock spring, and a clock spring shaft; the first transmission rack is slidably arranged on the first transmission rack guide, the second transmission rack is slidably arranged on the second transmission rack guide, the first transmission gear is engaged with the first transmission rack, the second transmission gear is engaged with the second transmission rack, the clock spring is sleeved on the clock spring shaft, the first transmission gear and the second transmission gear are respectively fixed on both ends of the clock spring shaft, the first transmission rack is engaged with the first generator gear, the second transmission rack is engaged with the second generator gear, and the first generator gear and the second generator gear are respectively fixed on the input shafts of the first generator and the second generator through one-way bearings; a nano power generation assembly arranged in the shell above the rotor generator for jumping and rubbing to generate electricity under the impact of waves; the nano power generation assembly includes a nano rubbing layer and a plurality of rubbing oscillators, the nano rubbing layer includes a nano rubbing anode layer and a nano rubbing cathode layer arranged at intervals, and the rubbing oscillators are arranged between the nano rubbing anode layer and the nano rubbing cathode layer; a solar power generation film covering the top wall of the shell for converting solar energy into electrical energy; and an energy storage device electrically connected with the rotor generator, the nano power generation assembly, and the solar power generation film respectively for storing electrical energy. A partition is arranged in the shell at the upper and lower ends of the transmission mechanism to form the hollow partition; the clock spring shaft is supported on the partition at the lower end through a shaft support.

2. The gravity stabilized hydro-power device of claim 1, wherein, The rubbing oscillators are made of styrene, the nano rubbing anode layer is made of aluminum foil, the nano rubbing cathode layer includes an aluminum foil layer and a polyvinyl chloride film attached to the aluminum foil layer; the polyvinyl chloride film is in contact with the rubbing oscillators, the aluminum foil layer is connected with the cathode of the energy storage device through a nano power generation cathode wire, and the nano rubbing anode layer is connected with the anode of the energy storage device through a nano power generation anode wire.

3. The gravity stabilized hydro-power device of claim 1, wherein, ​

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