Energy storage device for condensing and heating high-boiling-point fluid through vertically-installed lens

Abstract

An energy storage device for condensing and heating high-boiling-point fluid through a vertically-installed lens comprises a vertically-installed heat conduction sealing outer pipe 2, an axial circulation inner pipe 4 is sleeved with the heat conduction sealing outer pipe 2, the upper end of the circulation inner pipe 4 is open, and the lower end of the circulation inner pipe 4 penetrates through a bottom sealing layer of the heat conduction sealing outer pipe 2 to be communicated with a heat preservation sealing container 10. A high-boiling-point fluid inlet 6 is formed in the bottom of the heat conduction sealing outer pipe 2 and connected with an energy storage circulating pump 8 through a pipeline, the other end of the energy storage circulating pump 8 is communicated with a heat preservation sealing container 10 through a pipeline to form a closed loop, and high-boiling-point fluid 12 is arranged in a cavity of the whole circulating loop and in the heat preservation sealing container 10. A rotatable support 14 is arranged around the outer face of the heat conduction sealing outer pipe 2, a linear condensing lens assembly 16 is fixed to the rotatable support 14, and light is focused on the surface of the heat conduction sealing outer pipe 2 through the linear condensing lens assembly 16.

Description

Technical Field

[0001] The present invention relates to the field of mechanical manufacturing, and in particular, to an energy storage and power generation device for vertically installing a lens to concentrate light and heat a high-boiling-point fluid. Background Art

[0002] The existing solar thermal energy storage and power generation devices mainly use reflective light concentration for heating. The main disadvantages are that they occupy a huge area, have poor wind resistance, cause large light pollution, and have high requirements for the flatness of the terrain. This results in that solar thermal energy storage and power generation devices can only be concentrated and large-scale built into large power plants and cannot be developed distributively. For current wind turbines, the power solely depends on wind power, and the wind power resources fluctuate greatly, resulting in unstable power generation and difficult grid management. Moreover, in the existing integrated wind-solar-storage power generation facilities, the light mainly refers to photovoltaic power generation, which still requires a large land area and causes large subsequent environmental pollution. Even for those using solar thermal power generation, they still have the disadvantages of the aforementioned reflective solar thermal power generation devices. In view of the above deficiencies, the present invention proposes an energy storage and power generation device for vertically installing a lens to refract and concentrate light and heat a high-boiling-point fluid. Further, this device can be combined with the existing wind turbines to form a wind-solar-thermal energy storage integrated generator, which can improve the power generation stability and power generation per unit area of the existing wind turbines and solar thermal generators, and reduce the difficulty of grid management. Summary of the Invention

[0003] The purpose of the present invention is to provide a vertically installed rotatable lens light concentration assembly for heating a high-boiling-point fluid for energy storage and power generation. While realizing the above functions, due to the reduced projected area on the ground by vertical installation, compared with the existing devices, it not only saves land use area but is also completely unrestricted by the terrain flatness, thus realizing the distributed construction and use of solar thermal energy storage and power generation devices.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: An energy storage device for vertically installing a lens to concentrate light and heat a high-boiling-point fluid, comprising a vertically installed heat-conducting and sealed outer tube 2. An axial circulating inner tube 4 is sleeved in the heat-conducting and sealed outer tube 2. The upper end of the circulating inner tube 4 is open, and the lower end passes through the bottom sealing layer of the heat-conducting and sealed outer tube 2 and is connected to a heat-insulating and sealed container 10. There is a high-boiling-point fluid inlet 6 at the bottom of the heat-conducting and sealed outer tube 2. The high-boiling-point fluid inlet 6 is connected to an energy storage circulating pump 8 through a pipeline. The other end of the energy storage circulating pump 8 is connected to the heat-insulating and sealed container 10 through a pipeline to form a closed loop. There is a high-boiling-point fluid 12 in the cavity of the entire circulating loop and in the heat-insulating and sealed container 10. A rotatable bracket 14 is arranged outside the heat-conducting and sealed outer tube 2. A linear light concentration lens assembly 16 is fixed on the rotatable bracket 14. The linear light concentration lens assembly 16 focuses light on the surface of the heat-conducting and sealed outer tube 2.

[0005] Optionally, based on the above structure, a heat exchange coil 30 is added inside the heat-insulating and sealed container 10. One end of the heat exchange coil 30 is connected to the evaporation liquid inlet 26, and the other end is connected to the steam turbine 32, and the steam turbine 32 outputs power to the generator set 34; Optionally, based on the above structure, an evaporator 24 is added. The evaporator 24 includes an evaporation liquid flow inlet 26 and a steam outlet 28. The heat exchange coil 30 is moved from inside the heat-insulating and sealed container 10 to inside the evaporator 24. One end of the heat exchange coil 30 is connected to the heat-insulating and sealed container 10, and the other end is connected to the heat-insulating and sealed container 10 through a heat exchange circulation pump 22 to form a closed loop; the steam outlet 28 is connected to the steam turbine 32 through a pipeline, and the steam turbine 32 outputs power to the generator set 34; Optionally, for the energy storage device for vertically installing a lens to concentrate and heat a high-boiling-point fluid, the angle formed with the horizontal plane can be inclined within a specified range. This setting enables the heat-conducting and sealed outer tube 2 to change within a certain range following the change of the solar altitude angle under the promotion of external facilities, so as to improve the utilization efficiency of solar energy. At the same time, no additional floor area is increased.

[0006] Optionally, the linear concentrating lens assembly 16 includes one or a combination of a linear concentrating planar Fresnel lens 40, a linear concentrating circular arc Fresnel lens 44, and a linear concentrating cylindrical lens 46. The beneficial effect of this setting is to increase the light-receiving area in the three-dimensional space as much as possible within the allowable height range. At the same time, under different latitude usage environmental conditions, one of the three or their combination can be selected as the optimal solution to improve the performance of the device. Among them, the cylindrical lens for linear concentration and the planar Fresnel lens for linear concentration are well-known technologies to those skilled in the art. The circular arc Fresnel lens for linear concentration can use the hollow circular arc convex lens mentioned in the patent with the authorized patent number 202320159764X, which will not be elaborated here.

[0007] Optionally, the cross-sectional angle range of the linear concentrating cylindrical lens 46 is ±1 - 360 degrees. According to different environmental conditions, linear concentrating cylindrical lenses with different cross-sectional angles can be selected to improve their wind resistance performance. For example, in areas with strong winds, a linear concentrating cylindrical lens with a cross-sectional angle of 360 degrees can be selected to improve its wind resistance performance. In areas with weak winds, a linear concentrating cylindrical lens with a cross-sectional angle of 180 degrees can be selected, which can further reduce the weight and save material costs compared with the linear concentrating cylindrical lens with a cross-sectional angle of 360 degrees.

[0008] Optionally, a rotatable bracket 14 is provided between the heat-conducting and sealed outer tube 2 and the linear concentrating lens assembly 16. Under the drive of an external system through the rotatable bracket 14, the linear concentrating lens assembly 16 can be rotated around the heat-conducting and sealed outer tube 2 to support the synchronization of the linear concentrating lens assembly 16 with the solar azimuth angle.

[0009] Optionally, the condenser assembly and the heat collection assembly of the device can be installed on a rotatable platform to replace the rotatable bracket, and the rotatable bracket becomes a fixed bracket.

[0010] Optionally, the high-boiling-point fluid 12 is one or a combination of oil and molten salt.

[0011] Optionally, there is a wind power tower barrel 50, a wind power generating unit 52 is arranged at the top of the wind power tower barrel 50, a circular arc-shaped hollow double-layer heat-conducting container 54 is installed to surround the periphery of the wind power tower barrel 50, a rotatable bracket 14 is arranged on the circular arc-shaped hollow double-layer heat-conducting container 54, a linear concentrating lens assembly 16 is installed on the rotatable bracket 14, a circulating inner pipe 4 is arranged inside the circular arc-shaped hollow double-layer heat-conducting container 54 and is sequentially connected to an energy storage circulating pump 8 and a heat preservation and sealing container 10 through pipelines, a high-boiling-point fluid inlet 6 is arranged at the bottom of the circular arc-shaped hollow double-layer heat-conducting container 54 and is connected to the heat preservation and sealing container 10 to form a circulation loop, and a heat exchange coil 30 is arranged inside the heat preservation and sealing container 10; there is an evaporator 24, the evaporator 24 includes an evaporation liquid flow inlet 26 and a steam outlet 28, the steam outlet 28 is connected to a steam turbine 32 through a pipeline, one end of the heat exchange coil 30 is sequentially connected to a heat exchange circulating pump 22 and the evaporator 24 through pipelines, the other end of the heat exchange coil 30 is connected to the steam turbine 32 through a pipeline, and the steam turbine 32 outputs power to a generator set 34; an electric auxiliary heating device 56 is connected to the wind power generating unit 52 inside the circular arc-shaped hollow double-layer heat-conducting container 54 and the evaporator 24 for heating the fluid inside the heat preservation and sealing container 10 and the evaporation liquid inside the evaporator 24.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The device of the present invention combines solar heating and high-temperature energy storage.

[0013] (2) The device of the present invention uses vertically installed lens refraction for concentrating and heating, so that its structure is simple and compact, with strong wind resistance, small floor area, and large three-dimensional space area. While making full use of solar energy, it can solve the defect of low land use efficiency caused by large floor area in the prior art, and at the same time greatly reduce the light pollution of reflective concentrating heating.

[0014] (3) Through the vertically installed manner and the setting of the rotatable support assembly of the device of the present invention, the concentrating mirror can rotate around the heat-conducting and sealing outer pipe II and synchronize with the solar azimuth angle, thereby improving the light energy acquisition efficiency.

[0015] (4) The wind-solar-thermal energy storage integrated generator formed by combining the device of the present invention with the existing wind turbine can improve the power generation duration, power generation power stability and power generation per unit floor area of the existing wind turbine and solar-thermal generator at the same time, thereby reducing the difficulty of power grid management. Description of the Drawings

[0016] Figure 1 It is a central sectional view of the basic structure of a lens-condensing heating high-boiling-point fluid energy storage device installed vertically.

[0017] Figure 2 It is a schematic diagram of the central sectional view of the structure of the second embodiment.

[0018] Figure 3 It is a schematic diagram of the central sectional view of the structure of the third embodiment.

[0019] Figure 4 It is a top view of the cross-section of a linear concentrating planar Fresnel structure.

[0020] Figure 5 It is a top view of the cross-section of a linear concentrating circular arc Fresnel mirror structure.

[0021] Figure 6 It is a top view of the cross-section of a linear concentrating cylindrical lens structure.

[0022] Figure 7 It is a top view of the cross-section of a linear concentrating cylindrical lens.

[0023] Figure 8 It is a top view of the cross-section of a linear concentrating cylindrical lens.

[0024] Figure 9 It is a schematic diagram of the central sectional view of the structure of the fourth embodiment Figure 10 It is a top view of the cross-section of the wind power tower barrel and external components when a linear concentrating circular arc Fresnel mirror is selected in the fourth embodiment.

[0025] Among them, 2, heat-conducting and sealed outer tube; 4, circulating inner tube; 6, high-boiling-point fluid inlet; 8, energy storage circulation pump; 10, heat-insulating and sealed container; 12, high-boiling-point fluid; 14, rotatable bracket; 16, linear concentrating lens assembly; 22, heat exchange circulation pump; 24, evaporator; 26, evaporation liquid flow inlet; 28, steam outlet; 30, heat exchange coil; 32, steam turbine; 34, generator set; 40, linear concentrating planar Fresnel mirror; 44, linear concentrating circular arc Fresnel mirror; 46, linear concentrating cylindrical lens; 50, wind power tower barrel; 52, wind turbine; 54, circular arc-shaped hollow double-layer heat-conducting container; 56, electric auxiliary heating device. Specific embodiments Embodiment

[0026] In this embodiment, there is a vertically installed thermally conductive and sealed outer tube 2. An axial circulating inner tube 4 is sleeved in the thermally conductive and sealed outer tube 2. The upper end of the circulating inner tube 4 is open, and the lower end passes through the bottom sealing layer of the thermally conductive and sealed outer tube 2 and is connected to the heat preservation and sealing container 10. There is a high-boiling-point fluid inlet 6 at the bottom of the thermally conductive and sealed outer tube 2. The high-boiling-point fluid inlet 6 is connected to an energy storage circulating pump 8 through a pipeline. The other end of the energy storage circulating pump 8 is connected to the heat preservation and sealing container 10 through a pipeline to form a closed loop. There is a high-boiling-point fluid 12 in the cavity of the entire circulating loop and in the heat preservation and sealing container 10. A rotatable support 14 is arranged outside the thermally conductive and sealed outer tube 2. A linear condenser lens assembly 16 is fixed on the rotatable support 14. The linear condenser lens assembly 16 focuses light on the surface of the thermally conductive and sealed outer tube 2. Embodiment

[0027] On the basis of the structure of Embodiment 1, a heat exchange coil 30 is added in the heat preservation and sealing container 10. One end of the heat exchange coil 30 is connected to an evaporation liquid inlet 26, and the other end is connected to a steam turbine 32. The steam turbine 32 outputs power to a generator set 34. Embodiment

[0028] On the basis of the structure of Embodiment 2, an evaporator 24 is added. The evaporator 24 includes an evaporation liquid flow inlet 26 and a steam outlet 28. The heat exchange coil 30 is moved from the inside of the heat preservation and sealing container 10 to the inside of the evaporator 24. One end of the heat exchange coil 30 is connected to the heat preservation and sealing container 10, and the other end is connected to the heat preservation and sealing container 10 through a heat exchange circulating pump 22 to form a closed loop; the steam outlet 28 is connected to the steam turbine 32 through a pipeline. The steam turbine 32 outputs power to the generator set 34; Embodiment

[0029] In this embodiment, there is a wind power tower 50, and a wind turbine 52 is arranged at the top of the wind power tower 50. There is an arc-shaped hollow double-layer heat conduction container 54 installed to surround the periphery of the wind power tower 50. A rotatable bracket 14 is arranged on the arc-shaped hollow double-layer heat conduction container 54, and a linear concentrating lens assembly 16 is installed on the rotatable bracket 14. Inside the arc-shaped hollow double-layer heat conduction container 54, there is a circulating inner pipe 4 which is connected to a storage energy circulating pump 8 and a heat preservation and sealing container 10 in sequence through pipelines. There is a high-boiling-point fluid inlet 6 at the bottom of the arc-shaped hollow double-layer heat conduction container 54 which is connected to the heat preservation and sealing container 10 to form a circulating loop. Inside the heat preservation and sealing container 10, there is a heat exchange coil 30. There is an evaporator 24 which includes an evaporation liquid flow inlet 26 and a steam outlet 28. The steam outlet 28 is connected to a steam turbine 32 through a pipeline. One end of the heat exchange coil 30 is connected to the evaporator 24 through a pipeline in sequence after passing through a heat exchange circulating pump 22, and the other end of the heat exchange coil 30 is connected to the steam turbine 32. The steam turbine 32 outputs power to a generator set 34. An electric auxiliary heating device 56 is connected to the wind turbine 52 inside the arc-shaped hollow double-layer heat conduction container 54 and inside the evaporator 24, and is used to heat the fluid in the heat preservation and sealing container 10 and the evaporation liquid in the evaporator 24. This setting can improve the power generation duration, power generation power stability and power generation per unit floor area of the existing wind power generator and solar thermal power generator at the same time, thereby reducing the difficulty of power grid management.

[0030] The above is the preferred implementation mode, but it is not limited to this. Therefore, those of ordinary skill in the art should understand that various deformations can be made to the present invention without departing from the spirit and scope of the present invention defined by the appended claims, and it is still within the protection scope of this patent.

Claims

1. An energy storage device for vertically installing a lens to concentrate light and heat a high-boiling-point fluid, comprising a vertically installed heat-conducting and sealed outer tube (2). An axial circulating inner tube (4) is sleeved in the heat-conducting and sealed outer tube (2). The upper end of the circulating inner tube (4) is open, and the lower end passes through the bottom sealing layer of the heat-conducting and sealed outer tube (2) to communicate with a heat-insulating and sealed container (10). There is a high-boiling-point fluid inlet (6) at the bottom of the heat-conducting and sealed outer tube (2). The high-boiling-point fluid inlet (6) is connected to an energy storage circulating pump (8) through a pipeline. The other end of the energy storage circulating pump (8) is connected to the heat-insulating and sealed container (10) through a pipeline to form a closed loop. There is a high-boiling-point fluid (12) in the cavity of the entire circulating loop and the heat-insulating and sealed container (10). A rotatable bracket (14) is arranged outside the heat-conducting and sealed outer tube (2). A linear concentrating lens assembly (16) is fixed on the rotatable bracket (14). The linear concentrating lens assembly (16) focuses light on the surface of the heat-conducting and sealed outer tube (2).

2. An energy storage device for vertically installing a lens to concentrate light and heat a high-boiling-point fluid can be externally connected to a generator to form a vertically installed lens concentrating light and heat energy storage power generation device, comprising a vertically installed heat-conducting and sealed outer tube (2). An axial circulating inner tube (4) is sleeved in the heat-conducting and sealed outer tube (2). The upper end of the circulating inner tube (4) is open, and the lower end passes through the bottom sealing layer of the heat-conducting and sealed outer tube (2) to communicate with a heat-insulating and sealed container (10). There is a high-boiling-point fluid inlet (6) at the bottom of the heat-conducting and sealed outer tube (2). The high-boiling-point fluid inlet (6) is connected to an energy storage circulating pump (8) through a pipeline. The other end of the energy storage circulating pump (8) is connected to the heat-insulating and sealed container (10) through a pipeline to form a closed loop. There is a high-boiling-point fluid (12) in the cavity of the entire circulating loop and the heat-insulating and sealed container (10). A rotatable bracket (14) is arranged outside the heat-conducting and sealed outer tube (2). A linear concentrating lens assembly (16) is fixed on the rotatable bracket (14). The linear concentrating lens assembly (16) focuses light on the surface of the heat-conducting and sealed outer tube (2); A heat exchange coil (30) is added in the heat-insulating and sealed container (10). One end of the heat exchange coil (30) passes through the heat-insulating and sealed container (10) as an evaporation liquid flow inlet, and the other end also passes through the heat-insulating and sealed container (10) and is connected to a steam turbine (32) through a heat exchange circulating pump (22). The steam turbine (32) outputs power to a generator set (34).

3. For the energy storage device for vertically installing a lens to concentrate light and heat a high-boiling-point fluid according to claim 2, an evaporator (24) is added on the basis of the above structure. The evaporator (24) includes an evaporation liquid flow inlet (26) and a steam outlet (28). The heat exchange coil (30) is moved from the inside of the heat-insulating and sealed container (10) to the inside of the evaporator (24). One end of the heat exchange coil (30) is connected to the heat-insulating and sealed container (10), and the other end is connected to the heat-insulating and sealed container (10) through a heat exchange circulating pump (22) to form a closed loop; The steam outlet (28) is connected to the steam turbine (32) through a pipeline. The steam turbine (32) outputs power to a generator set (34).

4. A vertical installation lens concentrating and heating high-boiling-point fluid energy storage device according to claim 2, wherein the linearly concentrating lens assembly (16) includes one or a combination of a linearly concentrating planar Fresnel mirror (40), a linearly concentrating arc-shaped Fresnel mirror (44), and a linearly concentrating cylindrical lens (46). The linearly concentrating arc-shaped Fresnel mirror can be a hollow arc-shaped convex lens mentioned in the patent with the authorized patent number 202320159764X.

5. A vertical installation lens concentrating and heating high-boiling-point fluid energy storage device according to claim 2, with vertical installation being the optimal solution, but it can be tilted within a specified angle range in different latitude regions.

6. A vertical installation lens concentrating and heating high-boiling-point fluid energy storage device according to claim 2, wherein the cross-sectional angle range of the linearly concentrating cylindrical lens (46) is ±1 - 360 degrees, with 180 and 360 degrees being the best.

7. A vertical installation lens concentrating and heating high-boiling-point fluid energy storage device according to claim 2, wherein the heat-conducting sealed outer tube (2), the circulating inner tube (4), and the linearly concentrating lens assembly (16) are integrally arranged on a rotatable platform to better synchronize with the solar azimuth angle.

8. A vertical installation lens concentrating and heating high-boiling-point fluid energy storage device according to claim 2, wherein the high-boiling-point fluid (12) is one or a combination of oil and molten salt.

9. A vertical installation lens concentrating and heating high-boiling-point fluid energy storage device according to claim 2 can be further combined with a wind turbine to form an integrated wind power, solar thermal, and energy storage power generation device. There is a wind power tower (50), a wind turbine unit (52) is provided at the top of the wind power tower (50), and an arc-shaped hollow double-layer heat-conducting container (54) is installed to surround the periphery of the wind power tower (50). A rotatable bracket (14) is provided on the arc-shaped hollow double-layer heat-conducting container (54), and a linearly concentrating lens assembly (16) is installed on the rotatable bracket (14). A circulating inner tube (4) inside the arc-shaped hollow double-layer heat-conducting container (54) is connected to an energy storage circulating pump (8) and a heat-insulating and sealed container (10) in sequence through pipelines. There is a high-boiling-point fluid inlet (6) at the bottom of the arc-shaped hollow double-layer heat-conducting container (54) connected to the heat-insulating and sealed container (10) to form a circulation loop, and there is a heat exchange coil (30) inside the heat-insulating and sealed container (10); there is an evaporator (24), and the evaporator (24) includes an evaporation liquid flow inlet (26) and a steam outlet (28). One end of the heat exchange coil (30) is connected to the evaporator (24) through pipelines in sequence after connecting a heat exchange circulating pump (22), and the other end of the heat exchange coil (30) and the steam outlet (28) are connected to a steam turbine (32) through pipelines together. The steam outlet (28) is connected to the steam turbine (32) through a pipeline, and the steam turbine (32) outputs power to a generator set (34); there is an electric auxiliary heating device (56) inside the heat-insulating and sealed container (10) and the evaporator (24) connected to the wind turbine unit (52) for heating the fluid inside the heat-insulating and sealed container (10) and the evaporation liquid inside the evaporator (24).

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