A multi-stage continuous stepped u-fin plate heat storage device for hot fluid heat storage

Abstract

A kind of multistage continuous step U fin plate heat storage device for hot fluid heat storage, it includes the series construction continuous heat storage structure main body by the single cycle U-shaped double plate structure of several levels arranged from top to bottom, when series construction continuous heat storage structure main body, every two adjacent upper and lower single cycle U-shaped double plate structure opening direction is opposite, and the lower double plate structure of U in the single cycle U-shaped double plate structure of upper level structure——bottom hot fluid passage as the upper double plate structure of U in the single cycle U-shaped double plate structure of adjacent lower level structure——top hot fluid passage;Wherein the single cycle U-shaped double plate structure of upper level structure and the single cycle U-shaped double plate structure of lower level structure adopt the combined connection structure formed by inner side semicircular column section structure, outer side cuboid section structure in end connection place;Symmetrical arrangement is provided with several levels of blade discharge device in the left and right sides of continuous heat storage structure main body;Double-sided hot fluid recyclable device is set in the both sides of main body structure.

Description

Technical Field

[0001] This invention relates to a multi-stage continuous cascade thermal storage device based on the coupling of phase change energy storage materials and mechanical structures. This device is suitable for applications such as fluid heat storage, fluid waste heat recovery, and inter-seasonal thermal storage. It can also be used as an effective means to resolve the temporal and spatial contradictions in energy supply, thereby improving the performance and reliability of energy systems and other renewable energy consumption thermal storage fields. Background Technology

[0002] The characteristics of my country's resource endowment dictate that energy production and consumption will be dominated by fossil fuels such as coal for a certain period. As is well known, my country's onshore coal and oil resources are mainly distributed in northern my country. In particular, my country's resource endowment is characterized by abundant coal, scarce oil, and limited natural gas; more than two-thirds of my country's coal reserves are located in the northwest. This creates a geographical contradiction in my country's energy supply, necessitating energy storage technologies to address this contradiction. Furthermore, the peak electricity consumption periods during the summer months, including off-peak periods, also require energy storage and inter-seasonal thermal energy storage technologies.

[0003] On the other hand, since my country's energy production and consumption structure is dominated by fossil fuels, their unclean utilization has caused serious environmental pollution. The development of clean energy such as solar and wind energy has been elevated to an increasingly important level. However, solar and wind energy have problems such as low energy density, instability, and poor continuity in the utilization process. Energy storage technology is also needed to solve the above problems in the development and utilization process. Among these, thermal storage is one of the main energy storage technologies, which can significantly improve the system performance and reliability in the utilization process of the above renewable energy.

[0004] Furthermore, in the existing industrial and agricultural production processes, a large amount of waste heat and residual heat fluids are inevitably generated. In particular, residual heat fluid resources account for approximately 17% to 67% of the total fuel consumption, while their recovery rate reaches 60%. However, in the process of geothermal energy utilization, residual heat is often not effectively utilized, indicating significant energy-saving potential, and therefore requires recovery and utilization. The recovery of heat from residual heat fluids all requires thermal storage technology in energy storage. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the existing technology, reduce the pollution of the environment by fossil energy, improve the efficiency of energy utilization, and solve the technical problems in the utilization of renewable new energy sources. Specifically, it provides a multi-stage continuous cascade U-fin plate thermal storage device for thermal fluid heat storage and waste heat fluid recovery.

[0006] The objective of this invention can be achieved through the following technical measures:

[0007] The multi-stage continuous cascade U-fin plate thermal storage device for storing heat fluids of the present invention is characterized as follows:

[0008] a. A continuous thermal storage structure is constructed by connecting several layers of single-cycle U-shaped double-plate structures from top to bottom. When constructing the continuous thermal storage structure, the opening directions of each pair of adjacent upper and lower single-cycle U-shaped double-plate structures are opposite, and the U-shaped lower double-plate structure—the bottom hot fluid channel in the upper-level single-cycle U-shaped double-plate structure serves as the U-shaped upper double-plate structure—the top hot fluid channel in the adjacent lower-level single-cycle U-shaped double-plate structure. The upper-level and lower-level single-cycle U-shaped double-plate structures are connected at the ends using a combined connection structure (i.e., an outer square and inner circle structure) formed by an inner semi-cylindrical cross-section and an outer cuboid cross-section. This solves the problem of insufficient contact between the U-shaped double-plate structure and the phase change energy storage material at the ends of the main structure, which affects the thermal storage effect. At the same time, in order to reduce the resistance of the hot fluid, the right angle of the cuboid cross-section structure is connected by a rounded arc for transition. The area outside the top and bottom hot fluid channels is used as the working space of the phase change energy storage material, realizing high-intensity and large-capacity thermal storage.

[0009] b. In the upper and lower double-plate structure of the single-cycle U-shaped double-plate structure, the fins are composed of several irregularly shaped structures of different shapes, and they are arranged adjacent to each other on the fins in sequence, with the front and rear and left and right heights being symmetrical.

[0010] c. To achieve continuous thermal storage and continuous replacement of phase change energy storage materials in the working space of the phase change energy storage material, a blade unloading device consisting of several layers of unloading blades is symmetrically arranged on the left and right sides of the main body of the continuous thermal storage structure. The blade unloading device is arranged vertically and vertically with the single-circulation U-shaped double plate structure and reciprocates at a set speed and angle. The blade unloading device includes a drive shaft symmetrically arranged in the middle of the left and right sides of the main body of the continuous thermal storage structure for installing the unloading blades of each layer. The reciprocating rotation of the left and right drive shafts is achieved by upper and lower motors arranged at both ends of the drive shaft and running synchronously.

[0011] d. A dual-sided hot fluid circulation device is installed on both sides of the main structure. From the hot fluid outlet to the hot fluid inlet, two pipes are set up on the left and lower sides of the entire device to form one circulation path, and two pipes are set up on the right and upper sides of the entire device to form another circulation path, forming a dual closed-loop circulation. This enables the hot fluid to circulate multiple times after being absorbed and stored by the phase change energy storage material until the discharge requirements of the hot fluid are met, thus ensuring both the heat storage effect and environmental protection requirements.

[0012] In this invention, the fin shapes of the upper and lower double-plate structures in the single-cycle U-shaped double-plate structure are: semi-circular curved fins, folded curved fins, arc curved fins, straight plane fins, fins with large and small arc curved surfaces spaced apart, and fins with large and small straight plane surfaces spaced apart. Furthermore, the corresponding two fin shapes in the upper and lower structures of the single-cycle U-shaped double-plate structure are different. This is used to increase the working space of the phase change energy storage material in the series-cycle U-fin structure, prolong the contact time between the phase change energy storage material and the heat fluid, improve the heat transfer rate, and further improve the heat storage efficiency.

[0013] The end portion of the unloading blade combined with the drive shaft in this invention adopts a semi-cylindrical cross-section structure. Its radius is smaller than the radius of the semi-cylindrical cross-section structure at the end connection between the upper-level single-cycle U-shaped double-plate structure and the lower-level single-cycle U-shaped double-plate structure. The vertical width of the unloading blade is smaller than the working space width of the phase change energy storage material formed in the area outside the top and bottom hot fluid channels of the main body of the single-cycle U-shaped double-plate structure continuous heat storage structure. Its length can sweep across the working space of the phase change energy storage material formed in the area outside the top and bottom hot fluid channels of the main body of the single-cycle U-shaped double-plate structure series continuous heat storage structure. When the unloading blade is installed on the motor-driven drive shaft, the included angle between every two adjacent unloading blades along the axial direction is 8 to 11°. The installation position of each unloading blade on the motor-driven drive shaft corresponds one-to-one with the working space of the phase change energy storage material formed when the upper and lower single-cycle U-shaped double-plate structures are connected in series. The motor speed is adjusted as needed to utilize the reciprocating rotation of the multi-stage unloading blades to discharge the phase change energy storage material after heat exchange and heat storage from the working space in contact with the hot fluid in a timely manner.

[0014] The beneficial effects of this invention are as follows:

[0015] (1) Except for the double-sided hot fluid circulation device, hot fluid inlet and hot fluid outlet, the whole machine structure is symmetrical from left to right. It is simple and compact, easy to manufacture and install, has high heat transfer and heat storage efficiency, and strong applicability. It can be used for hot fluid heat storage and waste heat fluid recovery.

[0016] (2) The multi-stage single U-shaped double plate structure with opposite openings at the top and bottom is continuously connected in series, which has a large heat transfer area and a long heat flow path, resulting in high heat storage efficiency.

[0017] (3) The series-coupled U-shaped finned plate structure is connected in a series-connected heat storage structure, and the multi-level protrusion structure on the finned plate structure can make the heat fluid and the phase change energy storage material fully contact each other, thereby improving the heat storage rate.

[0018] (4) The multi-stage blade unloading device driven by dual motors can reciprocate at a certain speed and angle, which can fully unload and discharge the phase change energy storage material after heat storage, realize the replacement of the phase change energy storage material, and thus ensure the continuous recovery of heat from the heat fluid.

[0019] (5) Set up a dual device for circulating hot fluid to form a high-temperature hot fluid that can automatically circulate multiple times in a closed loop, ensuring the heat storage effect, avoiding heat damage, and meeting the environmental requirements for hot fluid discharge. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a top view of the overall structure of the present invention.

[0022] Figure 3 This is a left view of the overall structure of the present invention.

[0023] Figure 4 This is a front view of the blade unloading structure of the present invention.

[0024] Figure 5 This is a top view of the blade unloading structure of the present invention.

[0025] Figure 6 This is a partial enlarged view of the connection between the unloading blade and the drive shaft of the present invention.

[0026] Numbered in the diagram: 1. Support for the entire unit; 2. Left-side phase change energy storage material outlet; 3. Ninth-stage single-cycle U-shaped double-plate structure; 4. Left-side symmetrical center line lower end motor; 5. Eighth-stage single-cycle U-shaped double-plate structure; 6. Left-side ninth-stage unloading blade; 7. Left-side unloading blade rotation shaft; 8. Seventh-stage single-cycle U-shaped double-plate structure; 9. Left-side eighth-stage unloading blade; 10. Sixth-stage single-cycle U-shaped double-plate structure; 11. Left-side seventh-stage unloading blade; 12. Fifth-stage single-cycle U-shaped double-plate structure; 13. Left-side sixth-stage unloading blade; 14. Side hot fluid double-loop pipeline and control valve; 15. Left-side fifth-stage unloading blade; 16. Fourth-stage single-cycle U-shaped double-plate structure; 17. Third-stage single-cycle U-shaped double-plate structure; 18. Left... 19. Side fourth-stage unloading blade; 20. Second-stage single-cycle U-shaped double-plate structure; 21. Left-side third-stage unloading blade; 22. Left-side support of the whole machine; 23. Phase change material working space at the connection of adjacent single-cycle U-shaped double-plate structures on the left; 24. Left-side second-stage unloading blade; 25. First-stage single-cycle U-shaped double-plate structure; 26. Phase change material working space at the end of the single-cycle U-shaped double-plate structure; 27. Left-side first-stage unloading blade; 28. Left-side motor at the upper end of the symmetrical centerline; 29. ​​Left-side phase change energy storage material inlet; 30. High-temperature hot fluid inlet; 31. Hot fluid channel; 32. Folded fin of the first-stage single-cycle U-shaped double-plate structure; 33. Straight planar fin of the first-stage single-cycle U-shaped double-plate structure; 44. Second-stage single-cycle U-shaped double-plate structure. 34. Straight planar fins of the U-shaped double-plate structure; 35. Arc-curved fins of the second-stage single-cycle U-shaped double-plate structure; 36. Straight planar fins of the third-stage single-cycle U-shaped double-plate structure; 37. Semi-circular curved fins of the third-stage single-cycle U-shaped double-plate structure; 38. Large arc-curved and small straight planar spaced fins of the fourth-stage single-cycle U-shaped double-plate structure; 39. Arc-curved fins of the fourth-stage single-cycle U-shaped double-plate structure; 40. Right-side phase change energy storage material inlet; 41. Right-side symmetrical centerline end motor; 42. Combined connection structure formed by semi-cylindrical and cuboid cross-section structures between the first-stage single-cycle U-shaped double-plate structure and the hot fluid inlet channel; 43. Semi-circular cross-section between the first-stage single-cycle U-shaped double-plate structure and the second-stage single-cycle U-shaped double-plate structure. 43. Right-side first-stage unloading blade; 44. Right-side support of the whole machine; 45. Phase change material working space at the connection of adjacent single-cycle U-shaped double-plate structures on the right; 46. Right-side second-stage unloading blade; 47. Combined connection structure of semi-cylindrical and cuboid cross-section structures between the second-stage and third-stage single-cycle U-shaped double-plate structures; 48. Phase change material working space at the end of the combined connection structure of semi-cylindrical and cuboid cross-section structures; 49. Right-side third-stage unloading blade; 50. Combined connection structure of semi-cylindrical and cuboid cross-section structures between the third-stage and fourth-stage single-cycle U-shaped double-plate structures.51. Rotating shaft of the right-side unloading blade; 52. Right-side fourth-stage unloading blade; 53. Arc-shaped curved fin of the fifth-stage single-cycle U-shaped double-plate structure; 54. Combined connection structure formed by semi-cylindrical and cuboid cross-section structures between the fourth-stage and fifth-stage single-cycle U-shaped double-plate structures; 55. Spacing fins of large and small arc-shaped curved surfaces of the fifth-stage single-cycle U-shaped double-plate structure; 56. Right-side fifth-stage unloading blade; 57. Arc-shaped curved fin of the sixth-stage single-cycle U-shaped double-plate structure; 58. The connection structure formed by semi-cylindrical and cuboid cross-section structures between the fifth-stage and sixth-stage single-cycle U-shaped double-plate structures. Combined connection structure, 59. Right-side sixth-stage unloading blade, 60. Combined connection structure formed by semi-cylindrical and cuboid cross-section structures between the sixth-stage single-cycle U-shaped double-plate structure and the seventh-stage single-cycle U-shaped double-plate structure, 61. Semi-circular curved fin of the sixth-stage single-cycle U-shaped double-plate structure, 62. Right-side seventh-stage unloading blade, 63. Semi-circular curved fin of the seventh-stage single-cycle U-shaped double-plate structure, 64. Combined connection structure formed by semi-cylindrical and cuboid cross-section structures between the seventh-stage single-cycle U-shaped double-plate structure and the eighth-stage single-cycle U-shaped double-plate structure, 65. Right-side eighth-stage unloading blade, 66. Folded surface of the seventh-stage single-cycle U-shaped double-plate structure. 67. The semi-circular curved fin of the eighth-stage single-cycle U-shaped double-plate structure; 68. The combined connection structure formed by the semi-cylindrical and cuboid cross-section structures between the eighth-stage and ninth-stage single-cycle U-shaped double-plate structures; 69. The ninth-stage unloading blade on the right; 70. The motor at the lower end of the symmetrical center line on the right; 71. The large and small circular arc curved surfaces of the eighth-stage single-cycle U-shaped double-plate structure; 72. The phase change energy storage material outlet on the right; 73. The low-temperature hot fluid outlet; 74. The whole machine support surface; 75. The large circular arc curved surface and small straight plane of the ninth-stage single-cycle U-shaped double-plate structure; 76. The ninth-stage single-cycle U... 77. Semi-circular curved fins of a double-plate structure; 78. Outer square and inner circle cross-sections at the ends of each stage of the single-cycle U-shaped double-plate structure; 79. Left-side unloading blades of each stage; 80. Combined connection structure formed by semi-cylindrical and cuboid cross-sections between each stage of the single-cycle U-shaped double-plate structure; 81. Right-side unloading blades of each stage; 82. Single-cycle U-shaped double-plate structure of each stage; 83. Fins with large circular arc surfaces and small straight planes spaced apart; 84. Semi-circular curved fins of the fin structure; 85. Circular curved fins of the fin structure; 86. Folded fins of the fin structure; 87. Straight plane fins of the fin structure; 88. Main body wall of the machine.

[0027] In the diagram, A represents the projected coincidence lines of numbers 82, 83, and 85; B represents the projected coincidence lines of numbers 82 and 83; C represents the projected coincidence lines of numbers 82, 83, and 84; D represents the projected coincidence lines of numbers 82, 83, 84, and 85; E represents the projected coincidence lines of numbers 82, 83, 84, 85, and 86; F represents the projected coincidence lines of numbers 84 and 85; G represents the projected coincidence lines of numbers 83, 85, and 86; and H represents the projected coincidence lines of numbers 82 and 85. Detailed Implementation

[0028] The present invention will be further described below with reference to embodiments (see accompanying drawings):

[0029] like Figure 1 , 2 As shown in Figure 3, the multi-stage continuous cascade U-fin plate thermal storage device for storing heat fluids of the present invention has the following features:

[0030] a. A continuous thermal storage structure is constructed by connecting several layers of single-cycle U-shaped double-plate structures from top to bottom. When constructing the continuous thermal storage structure, the opening directions of each pair of adjacent upper and lower single-cycle U-shaped double-plate structures are opposite, and the U-shaped lower double-plate structure—the bottom hot fluid channel in the upper-level single-cycle U-shaped double-plate structure serves as the U-shaped upper double-plate structure—the top hot fluid channel in the adjacent lower-level single-cycle U-shaped double-plate structure. The upper-level and lower-level single-cycle U-shaped double-plate structures are connected at the ends using a combined connection structure (i.e., an outer square and inner circle structure) formed by an inner semi-cylindrical cross-section and an outer cuboid cross-section. This solves the problem of insufficient contact between the U-shaped double-plate structure and the phase change energy storage material at the ends of the main structure, which affects the thermal storage effect. At the same time, in order to reduce the resistance of the hot fluid, the right angle of the cuboid cross-section structure is connected by a rounded arc for transition. The area outside the top and bottom hot fluid channels is used as the working space of the phase change energy storage material, realizing high-intensity and large-capacity thermal storage.

[0031] b. In the upper and lower double-plate structure of the single-cycle U-shaped double-plate structure, the fins are composed of several irregularly shaped structures of different shapes, and they are arranged adjacent to each other on the fins in sequence, with the front and rear and left and right heights being symmetrical.

[0032] c. To achieve continuous thermal storage and continuous replacement of phase change energy storage materials in the working space of the phase change energy storage material, a blade unloading device consisting of several layers of unloading blades is symmetrically arranged on the left and right sides of the main body of the continuous thermal storage structure. The blade unloading device is arranged vertically and vertically with the single-circulation U-shaped double plate structure and reciprocates at a set speed and angle. The blade unloading device includes a drive shaft symmetrically arranged in the middle of the left and right sides of the main body of the continuous thermal storage structure for installing the unloading blades of each layer. The reciprocating rotation of the left and right drive shafts is achieved by upper and lower motors arranged at both ends of the drive shaft and running synchronously.

[0033] d. A dual-sided hot fluid circulation device is installed on both sides of the main structure. From the hot fluid outlet to the hot fluid inlet, two pipes are set up on the left and lower sides of the entire device to form one circulation path, and two pipes are set up on the right and upper sides of the entire device to form another circulation path, forming a dual closed-loop circulation. This enables the hot fluid to circulate multiple times after being absorbed and stored by the phase change energy storage material until the discharge requirements of the hot fluid are met, thus ensuring both the heat storage effect and environmental protection requirements.

[0034] In this invention, the fin shapes of the upper and lower double-plate structures in the single-cycle U-shaped double-plate structure are: semi-circular curved fins, folded curved fins, arc curved fins, straight plane fins, fins with large and small arc curved surfaces spaced apart, and fins with large and small straight plane surfaces spaced apart. Furthermore, the corresponding two fin shapes in the upper and lower structures of the single-cycle U-shaped double-plate structure are different. This is used to increase the working space of the phase change energy storage material in the series-cycle U-fin structure, prolong the contact time between the phase change energy storage material and the heat fluid, improve the heat transfer rate, and further improve the heat storage efficiency.

[0035] The end portion of the unloading blade combined with the drive shaft in this invention adopts a semi-cylindrical cross-section structure. Its radius is smaller than the radius of the semi-cylindrical cross-section structure at the end connection between the upper-level single-cycle U-shaped double-plate structure and the lower-level single-cycle U-shaped double-plate structure. The vertical width of the unloading blade is smaller than the width of the working space of the phase change energy storage material formed in the area outside the top and bottom hot fluid channels of the main body of the single-cycle U-shaped double-plate structure continuous heat storage structure. Its length can sweep across the working space of the phase change energy storage material formed in the area outside the top and bottom hot fluid channels of the main body of the single-cycle U-shaped double-plate structure series continuous heat storage structure. When the unloading blade is installed on the motor-driven drive shaft, the included angle between every two adjacent unloading blades along the axial direction is 8 to 11° and they are arranged in a fan shape. The installation position of each unloading blade on the motor-driven drive shaft corresponds one-to-one with the working space of the phase change energy storage material formed when the upper and lower single-cycle U-shaped double-plate structures are connected in series. The motor speed is adjusted as needed to use the reciprocating rotation of the multi-stage unloading blades to discharge the phase change energy storage material after heat exchange and heat storage from the working space in contact with the hot fluid in a timely manner. (See) Figure 4 , 5 (As shown)

[0036] More specifically:

[0037] In the specific implementation of this invention, the first step is to pre-process and manufacture the specially shaped fins with a cuboid fin plate structure:

[0038] These special-shaped wing structures mainly include: wing 82 with a large circular arc surface and a small straight plane spaced apart, wing 83 with a semi-circular curved surface, wing 84 with a circular arc surface, wing 85 with a large circular arc surface and a small circular arc surface spaced apart, wing 86 with a folded surface, and wing 87 with a straight plane, etc. Pre-processing of special-shaped cuboid wing structures is carried out according to the structure and position of the present invention shown in similar example figures.

[0039] Next, the installation of each level of the single-cycle U-shaped double-plate structure is carried out: the whole machine support 1 is placed on the installation plane, and then the whole machine support surface 74 is welded to the whole machine support 1. During installation, attention should be paid to the front-to-back and left-to-right symmetry of the four whole machine supports 1 with respect to the whole machine support surface 74; then, the large arc curved surface and small straight plane spacer 75 of the ninth-level single-cycle U-shaped double-plate structure 3, the semi-circular curved surface 76 of the ninth-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the end of each level of the single-cycle U-shaped double-plate structure form the ninth-level single-cycle U-shaped double-plate structure 3. When connecting, The three components are welded together to form a ninth-level single-cycle U-shaped double-plate structure 3, and the structure and position requirements are as shown in the example diagram of the present invention. Specifically, the large arc surface of the ninth-level single-cycle U-shaped double-plate structure and the small straight plane spacer 75, and the semi-circular curved surface 76 of the ninth-level single-cycle U-shaped double-plate structure are reserved vertically (the distance between them should be greater than the height of the unloading blades 80 on the right side). A corresponding working space 45 for the phase change material at the connection point of the adjacent single-cycle U-shaped double-plate structure on the right side is also reserved, and this space matches the outer square and inner circle structural section 77 at the end of each level of the single-cycle U-shaped double-plate structure. The intention is to have the opening of the U-shaped double-plate structure face to the right, and the outer square and inner circle structure section 77 of the end of each level of the single-cycle U-shaped double-plate structure is arranged on the left side of the main body structure of the whole machine. Note that the large arc surface and small straight plane of the ninth-level single-cycle U-shaped double-plate structure's spacer fin 75 and the semi-circular curved surface fin 76 of the ninth-level single-cycle U-shaped double-plate structure are installed symmetrically with reference to the left and right symmetry lines of the main body structure of the whole machine. Simultaneously, the distance between the cuboid structure of the outer square and inner circle structure section 77 of each level of the single-cycle U-shaped double-plate structure in the ninth-level single-cycle U-shaped double-plate structure 3 and the left side support 21 of the whole machine is related to the distance between the cuboid structure of the outer square and inner circle structure section 77 of each level of the single-cycle U-shaped double-plate structure 81 and the distance between the cuboid structure of the outer square and inner circle structure section 7 ... The ratio of plate lengths should be maintained at approximately 25:370 (to form a suitable working space 25 for the phase change material at the end of the single-cycle U-shaped double-plate structure). Note that the lower layer of the large arc surface and small straight plane spacer 75 of the ninth-level single-cycle U-shaped double-plate structure and the semi-circular curved surface 76 of the ninth-level single-cycle U-shaped double-plate structure (this is just an example in the figure; in reality, the upper and lower layers can be interchanged) should maintain a certain vertical distance from the machine support surface 74 and be welded together with the lower layer to form the hot fluid channel 30 in the ninth-level single-cycle U-shaped double-plate structure 3 together with the machine support surface 74, and also play the role of supporting the main structure of the machine.

[0040] Then, the combined connection structure 68 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the eighth-level single-cycle U-shaped double-plate structure and the ninth-level single-cycle U-shaped double-plate structure is installed. During installation, it is installed on the upper right side of the opening end of the ninth-level single-cycle U-shaped double-plate structure 3. The opening of its semi-cylindrical cross-section structure faces the left and right symmetry line of the main body structure of the machine. Its vertical height is the distance between the ninth-level single-cycle U-shaped double-plate structure 3 and the eighth-level single-cycle U-shaped double-plate structure 5. Its symmetry line is on the plane at the midpoint of the distance between the vertical distance of the adjacent upper and lower single-cycle U-shaped double-plate structures. The distance of its cuboid cross-section structure from the right side support 44 of the machine is consistent with the distance between the U-shaped closed end of the ninth-level single-cycle U-shaped double-plate structure 3 and the left side support 21 of the machine. That is, it is symmetrically arranged with the left and right symmetry line of the main body structure of the machine as the reference. In addition, it should be noted that in the combined connection structure 68 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the eighth-level single-circulation U-shaped double-plate structure and the ninth-level single-circulation U-shaped double-plate structure, the lower end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are respectively connected to the upper and lower plate surface lines of the top hot fluid channel 30 in the ninth-level single-circulation U-shaped double-plate structure by welding (that is, the lower end line of the cuboid cross-section structure must be welded to the upper layer of the large arc surface and small straight plane spacer fin 75 of the ninth-level single-circulation U-shaped double-plate structure and the semi-circular curved surface fin 76 of the ninth-level single-circulation U-shaped double-plate structure).

[0041] Next, the eighth-level single-cycle U-shaped double-plate structure 5 is formed by the semi-circular curved fin 67 of the eighth-level single-cycle U-shaped double-plate structure, the large and small circular arc curved surface spacer 71 of the eighth-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure. During connection, the three components are welded together to form the eighth-level single-cycle U-shaped double-plate structure 5, and the structure and position requirements of the eighth-level single-cycle U-shaped double-plate structure 5 shown in the example figure of this invention are followed, i.e., the semi-circular curved fin 67 of the eighth-level single-cycle U-shaped double-plate structure, the large and small circular arc curved surface spacer 71 of the eighth-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure are connected. The large and small circular arc surfaces of the plate structure are separated by the upper and lower fins 71 (the distance between them should be greater than the height of the unloading blades 80 on the right side). A corresponding working space 45 for the phase change material at the connection point of the adjacent single-cycle U-shaped double-plate structure on the right side should be reserved, and this space should match the outer square and inner circle structural section 77 at the end of each stage of the single-cycle U-shaped double-plate structure. It is important to ensure that the opening of the U-shaped double-plate structure faces right. The outer square and inner circle structural section 77 at the end of each stage of the single-cycle U-shaped double-plate structure is arranged on the left side of the main structure of the machine. Also note the semi-circular curved fins 67 of the eighth-stage single-cycle U-shaped double-plate structure and the large circular curved fins of the eighth-stage single-cycle U-shaped double-plate structure. When installing the curved surface and small circular curved surface spacer 71, both are symmetrically installed with the left and right symmetry lines of the main body structure as the reference. At the same time, the distance between the cuboid structure of the outer square and inner circle structure section 77 at the end of each level of the single-cycle U-shaped double plate structure 5 and the left side bracket 21 of the whole machine is kept at about 25:370 (to form a suitable working space 25 for the phase change material at the end of the single-cycle U-shaped double plate structure). Note that the upper and lower plate lines that make up the bottom heat fluid channel 30 in the eighth-stage single-cycle U-shaped double plate structure 5 are respectively welded to the eighth-stage single-cycle U-shaped double plate structure. In the combined connection structure 68 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the U-shaped double-plate structure and the ninth-level single-cycle U-shaped double-plate structure, the upper end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are connected (that is, the upper end line of the cuboid cross-section structure must be welded to the lower layer of the semi-circular curved surface fin 67 of the eighth-level single-cycle U-shaped double-plate structure and the large circular arc curved surface and small circular arc curved surface spacer fin 71 of the eighth-level single-cycle U-shaped double-plate structure, and the two maintain a certain vertical distance between them), together forming the bottom heat fluid channel 30 in the eighth-level single-cycle U-shaped double-plate structure 5, and playing the role of supporting the main structure of the whole machine.

[0042] Then, the combined connection structure 64 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the seventh-level single-cycle U-shaped double-plate structure and the eighth-level single-cycle U-shaped double-plate structure is installed. During installation, it is installed on the upper right side of the opening end of the eighth-level single-cycle U-shaped double-plate structure 5. The opening of its semi-cylindrical cross-section structure faces the left and right symmetry line of the main body structure of the machine. Its vertical height is the distance between the eighth-level single-cycle U-shaped double-plate structure 5 and the seventh-level single-cycle U-shaped double-plate structure 8. Its symmetry line is on the plane at the midpoint of the distance between the vertical distance of the adjacent upper and lower single-cycle U-shaped double-plate structures. The distance of its cuboid cross-section structure from the right side support 44 of the machine is consistent with the distance between the U-shaped closed end of the eighth-level single-cycle U-shaped double-plate structure 5 and the left side support 21 of the machine. That is, it is symmetrically arranged with the left and right symmetry line of the main body structure of the machine as the reference. In addition, it should be noted that in the combined connection structure 64 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the seventh-level single-circulation U-shaped double-plate structure and the eighth-level single-circulation U-shaped double-plate structure, the lower end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are respectively connected to the upper and lower plate surface lines of the top hot fluid channel 30 in the eighth-level single-circulation U-shaped double-plate structure by welding (that is, the lower end line of the cuboid cross-section structure must be welded to the upper layer of the semi-circular curved surface fin 67 of the eighth-level single-circulation U-shaped double-plate structure and the large and small circular arc curved surface spacer fin 71 of the eighth-level single-circulation U-shaped double-plate structure).

[0043] Next, the semi-circular curved fin 63 and the folded fin 66 of the seventh-level single-cycle U-shaped double-plate structure 8, together with the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure, form the seventh-level single-cycle U-shaped double-plate structure 8. During connection, the three components are welded together to form the seventh-level single-cycle U-shaped double-plate structure 8, and the structure and position requirements of the seventh-level single-cycle U-shaped double-plate structure 8 shown in the example figure of this invention are followed, i.e., the semi-circular curved fin 63 and the folded fin 66 of the seventh-level single-cycle U-shaped double-plate structure 63, the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure 8 are connected. The folded fins 66 of the plate structure should have a reserved working space 45 for the phase change material at the connection point of the adjacent single-cycle U-shaped double-plate structure on the right side (the distance between them should be greater than the height of the unloading blades 80 on the right side). This space should match the outer square and inner circle structural section 77 at the end of each single-cycle U-shaped double-plate structure. It is important to ensure that the opening of the U-shaped double-plate structure faces right. The outer square and inner circle structural section 77 at the end of each single-cycle U-shaped double-plate structure is located on the left side of the main structure of the machine. Also note the semi-circular curved fins 63 of the seventh-stage single-cycle U-shaped double-plate structure and the folded fins of the seventh-stage single-cycle U-shaped double-plate structure. When installing the fin plates 66, they are all installed symmetrically with reference to the left and right symmetry lines of the main body structure of the whole machine; at the same time, the ratio of the distance between the cuboid structure of the outer square and inner circle structure section 77 of each stage of the single-cycle U-shaped double plate structure 8 and the left side bracket 21 of the whole machine to the length of the fin plate in each stage of the single-cycle U-shaped double plate structure 81 is maintained at about 25:370 (to form a suitable working space 25 for the phase change material at the end of the single-cycle U-shaped double plate structure). Note that the upper and lower plate surface lines that make up the bottom heat fluid channel 30 in the seventh-stage single-cycle U-shaped double plate structure 8 are respectively welded and connected to the seventh-stage single-cycle... In the combined connection structure 64 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the U-shaped double-plate structure and the eighth-level single-circulation U-shaped double-plate structure, the upper end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are connected (that is, the upper end line of the cuboid cross-section structure must be welded to the lower layer of the semi-circular curved fin 63 of the seventh-level single-circulation U-shaped double-plate structure and the folded fin 66 of the seventh-level single-circulation U-shaped double-plate structure, and the two maintain a certain vertical distance). Together, they form the bottom heat fluid channel 30 in the seventh-level single-circulation U-shaped double-plate structure 8, and play the role of supporting the main structure of the whole machine.

[0044] Then, the combined connection structure 60 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the sixth-level single-cycle U-shaped double-plate structure and the seventh-level single-cycle U-shaped double-plate structure is installed. During installation, it is installed on the upper right side of the opening end of the seventh-level single-cycle U-shaped double-plate structure 8. The opening of its semi-cylindrical cross-section structure faces the left and right symmetry line of the main body structure of the machine. Its vertical height is the distance between the seventh-level single-cycle U-shaped double-plate structure 8 and the sixth-level single-cycle U-shaped double-plate structure 10, and its symmetry line is on the plane at the midpoint of the distance between the vertical distance of the two adjacent upper and lower single-cycle U-shaped double-plate structures. The distance of its cuboid cross-section structure from the right side support 44 of the machine is consistent with the distance between the U-shaped closed end of the seventh-level single-cycle U-shaped double-plate structure 8 and the left side support 21 of the machine. That is, it is symmetrically arranged with the left and right symmetry line of the main body structure of the machine as the reference. In addition, it should be noted that in the combined connection structure 60 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the sixth-level single-circulation U-shaped double-plate structure and the seventh-level single-circulation U-shaped double-plate structure, the lower end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are respectively connected to the upper and lower plate surface lines of the top hot fluid channel 30 in the seventh-level single-circulation U-shaped double-plate structure by welding (that is, the lower end line of the cuboid cross-section structure must be welded to the upper layer of the semi-circular curved fin 63 of the seventh-level single-circulation U-shaped double-plate structure and the folded fin 66 of the seventh-level single-circulation U-shaped double-plate structure).

[0045] Next, the sixth-level single-cycle U-shaped double-plate structure 10 is formed by the arc-shaped curved fin 57 of the sixth-level single-cycle U-shaped double-plate structure, the semi-circular curved fin 61 of the sixth-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure. During connection, the three components are welded together to form the sixth-level single-cycle U-shaped double-plate structure 10, and the structure and position requirements of the sixth-level single-cycle U-shaped double-plate structure 10 shown in the example figure of this invention are followed, i.e., the arc-shaped curved fin 57 of the sixth-level single-cycle U-shaped double-plate structure, the semi-circular curved fin 61 of the sixth-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure are connected. The semi-circular curved fin plate 61 of the plate structure should have a reserved working space 45 for the phase change material at the connection point of the adjacent single-cycle U-shaped double plate structure on the right side (the distance between the upper and lower parts should be greater than the height of the unloading blades 80 of each level on the right side). It should also match the outer square inner circle structure section 77 at the end of each level of the single-cycle U-shaped double plate structure. It is important to ensure that the opening of the U-shaped double plate structure faces to the right. The outer square inner circle structure section 77 at the end of each level of the single-cycle U-shaped double plate structure is arranged on the left side of the main structure of the whole machine. Also note the arc-shaped curved fin plate 57 of the sixth-level single-cycle U-shaped double plate structure and the semi-circular curved fin plate of the sixth-level single-cycle U-shaped double plate structure. During installation, all units should be symmetrically installed based on the left and right symmetry lines of the main body structure. Simultaneously, the distance between the cuboid structure of the outer square and inner circle cross-section 77 at the end of each stage of the sixth-stage single-circulation U-shaped double-plate structure 10 and the left side support 21 of the main body should be maintained at approximately 25:370 (to form a suitable working space 25 for the phase change material at the end of the single-circulation U-shaped double-plate structure). Note that the upper and lower plate surfaces forming the bottom heat fluid channel 30 in the sixth-stage single-circulation U-shaped double-plate structure 10 should be welded together with the sixth-stage single-circulation U-shaped double-plate structure. In the combined connection structure 60 formed by the semi-cylindrical section structure and the cuboid section structure between the seventh-level single-circulation U-shaped double-plate structure, the upper end lines of the semi-cylindrical section structure and the cuboid section structure are connected (that is, the upper end line of the cuboid section structure must be welded to the lower layer of the combined connection structure 60 formed by the semi-cylindrical section structure and the cuboid section structure between the sixth-level single-circulation U-shaped double-plate structure and the seventh-level single-circulation U-shaped double-plate structure, and the two maintain a certain vertical distance). Together, they form the bottom heat fluid channel 30 in the sixth-level single-circulation U-shaped double-plate structure 10, and play a role in supporting the main structure of the whole machine.

[0046] Then, the combined connection structure 58 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the fifth-level single-cycle U-shaped double-plate structure and the sixth-level single-cycle U-shaped double-plate structure is installed. During installation, it is installed on the upper right side of the opening end of the sixth-level single-cycle U-shaped double-plate structure 10. The opening of its semi-cylindrical cross-section structure faces the left and right symmetry line of the main body structure of the machine. Its vertical height is the distance between the sixth-level single-cycle U-shaped double-plate structure 10 and the fifth-level single-cycle U-shaped double-plate structure 12. Its symmetry line is on the plane at the midpoint of the distance between the vertical distance of the two adjacent upper and lower single-cycle U-shaped double-plate structures. The distance of its cuboid cross-section structure from the right side support 44 of the machine is consistent with the distance between the U-shaped closed end of the sixth-level single-cycle U-shaped double-plate structure 10 and the left side support 21 of the machine. That is, it is symmetrically arranged with the left and right symmetry line of the main body structure of the machine as the reference. In addition, it should be noted that in the combined connection structure 58 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the fifth-level single-circulation U-shaped double-plate structure and the sixth-level single-circulation U-shaped double-plate structure, the lower end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are respectively connected to the upper and lower plate surface lines of the top hot fluid channel 30 in the sixth-level single-circulation U-shaped double-plate structure by welding (that is, the lower end line of the cuboid cross-section structure must be welded to the upper one of the arc-shaped curved fin 57 of the sixth-level single-circulation U-shaped double-plate structure and the semi-circular curved fin 61 of the sixth-level single-circulation U-shaped double-plate structure).

[0047] Next, the fifth-level single-cycle U-shaped double-plate structure 12 is formed by the arc-shaped curved fin 53 of the fifth-level single-cycle U-shaped double-plate structure, the large and small arc-shaped curved fins 55 of the fifth-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure. During connection, the three components are welded together to form the fifth-level single-cycle U-shaped double-plate structure 12, and the structure and position requirements of the fifth-level single-cycle U-shaped double-plate structure 12 shown in the example figure of this invention are followed, i.e., the arc-shaped curved fin 53 of the fifth-level single-cycle U-shaped double-plate structure, the large and small arc-shaped curved fins 55 of the fifth-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure. The large and small arc surfaces of the U-shaped double-plate structure should be spaced vertically between the upper and lower sections of the fin 55 (the distance between them should be greater than the height of the unloading blades 80 on the right side). A corresponding working space 45 for the phase change material at the connection point of the adjacent single-cycle U-shaped double-plate structure on the right side should be reserved, and this space should match the outer square and inner circle structural section 77 at the end of each stage of the single-cycle U-shaped double-plate structure. It is important to ensure that the opening of the U-shaped double-plate structure faces right, and that the outer square and inner circle structural section 77 at the end of each stage of the single-cycle U-shaped double-plate structure is located on the left side of the main structure of the machine. Also note the arc-shaped curved fin 53 of the fifth-stage single-cycle U-shaped double-plate structure and the large arc surface of the fifth-stage single-cycle U-shaped double-plate structure. When installing the arc-shaped curved surface and the small arc-shaped curved surface spacer 55, both are symmetrically installed with the left and right symmetry lines of the main body structure as the reference. At the same time, the distance between the cuboid structure of the outer square and inner circle structure section 77 at the end of each stage of the single-cycle U-shaped double-plate structure 12 and the left side bracket 21 of the whole machine is kept at about 25:370 (to form a suitable working space 25 for the phase change material at the end of the single-cycle U-shaped double-plate structure). Note that the upper and lower plate lines that make up the bottom heat fluid channel 30 in the fifth-stage single-cycle U-shaped double-plate structure 12 are respectively welded and connected to the fifth-stage single-cycle... In the combined connection structure 58 formed by the semi-cylindrical section structure and the cuboid section structure between the U-shaped double-plate structure and the sixth-level single-circulation U-shaped double-plate structure, the upper end lines of the semi-cylindrical section structure and the cuboid section structure are connected (that is, the upper end line of the cuboid section structure must be welded to the lower layer of the combined connection structure 58 formed by the semi-cylindrical section structure and the cuboid section structure between the fifth-level single-circulation U-shaped double-plate structure and the sixth-level single-circulation U-shaped double-plate structure, and the two maintain a certain vertical distance). Together, they form the bottom heat fluid channel 30 in the fifth-level single-circulation U-shaped double-plate structure 12, and play the role of supporting the main structure of the whole machine.

[0048] Then, the combined connection structure 54 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the fourth-level single-cycle U-shaped double-plate structure and the fifth-level single-cycle U-shaped double-plate structure is installed. During installation, it is installed on the upper right side of the opening end of the fifth-level single-cycle U-shaped double-plate structure 12. The opening of its semi-cylindrical cross-section structure faces the left and right symmetry line of the main body structure of the machine. Its vertical height is the distance between the fifth-level single-cycle U-shaped double-plate structure 12 and the fourth-level single-cycle U-shaped double-plate structure 16, and its symmetry line is on the plane at the midpoint of the distance between the vertical distance of the two adjacent upper and lower single-cycle U-shaped double-plate structures. The distance of its cuboid cross-section structure from the right side support 44 of the machine is consistent with the distance between the U-shaped closed end of the fifth-level single-cycle U-shaped double-plate structure 12 and the left side support 21 of the machine. That is, it is symmetrically arranged with the left and right symmetry line of the main body structure of the machine as the reference. In addition, it should be noted that in the combined connection structure 54 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the fourth-level single-circulation U-shaped double-plate structure and the fifth-level single-circulation U-shaped double-plate structure, the lower end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are respectively connected to the upper and lower plate surface lines of the top hot fluid channel 30 in the fifth-level single-circulation U-shaped double-plate structure 12 by welding (that is, the lower end line of the cuboid cross-section structure must be welded to the upper layer of the arc-shaped curved fin 53 of the fifth-level single-circulation U-shaped double-plate structure and the large arc-shaped curved surface and small arc-shaped curved surface spacer fin 55 of the fifth-level single-circulation U-shaped double-plate structure).

[0049] Next, the fourth-level single-cycle U-shaped double-plate structure 16 is formed by the large arc surface of the fourth-level single-cycle U-shaped double-plate structure 16, the small straight plane spacer fin 37, the arc surface fin 38 of the fourth-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure. During connection, the three components are welded together to form the fourth-level single-cycle U-shaped double-plate structure 16, and the structure and position requirements of the fourth-level single-cycle U-shaped double-plate structure 16 shown in the example figure of this invention are followed, that is, the large arc surface of the fourth-level single-cycle U-shaped double-plate structure and... The small straight-plane spacer fin 37 and the arc-curved surface fin 38 of the fourth-stage single-cycle U-shaped double-plate structure should have a corresponding working space 45 for the phase change material at the connection point of the adjacent single-cycle U-shaped double-plate structure on the right side (the distance between them should be greater than the height of the unloading blades 80 on the right side). This space should match the outer square inner circle structure section 77 at the end of each stage of the single-cycle U-shaped double-plate structure. It is important to ensure that the opening of the U-shaped double-plate structure faces right, and that the outer square inner circle structure section 77 at the end of each stage of the single-cycle U-shaped double-plate structure is located on the left side of the main structure of the machine. Also, note that the fourth-stage single-cycle U-shaped double-plate structure 16 should be installed with... The components are installed symmetrically with reference to the left and right symmetry lines of the main body structure. Simultaneously, the distance between the cuboid structure of the outer square and inner circle cross-section 77 at the end of each stage of the fourth-stage single-circulation U-shaped double-plate structure 16 and the left side support 21 of the main body is maintained at approximately 25:370 (to form a suitable working space 25 for the phase change material at the end of the single-circulation U-shaped double-plate structure). Note that the upper and lower plate surfaces forming the bottom heat fluid channel 30 in the fourth-stage single-circulation U-shaped double-plate structure 16 are respectively welded together, and the fourth-stage single-circulation U-shaped double-plate structure is connected to the fifth-stage... In the combined connection structure 54 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the single-cycle U-shaped double-plate structures, the upper end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are connected (that is, the upper end line of the cuboid cross-section structure must be welded to the lower layer of the combined connection structure 54 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the fourth-level single-cycle U-shaped double-plate structure and the fifth-level single-cycle U-shaped double-plate structure, and the two maintain a certain vertical distance). Together, they form the bottom heat fluid channel 30 in the fourth-level single-cycle U-shaped double-plate structure 16, and play the role of supporting the main structure of the whole machine.

[0050] Then, the combined connection structure 50 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the third-level single-circulation U-shaped double-plate structure and the fourth-level single-circulation U-shaped double-plate structure is installed. During installation, it is installed on the upper right side of the opening end of the fourth-level single-circulation U-shaped double-plate structure 16. The opening of its semi-cylindrical cross-section structure faces the left and right symmetry line of the main body structure of the machine. Its vertical height is the distance between the fourth-level single-circulation U-shaped double-plate structure 16 and the third-level single-circulation U-shaped double-plate structure 17, and its symmetry line is on the plane at the midpoint of the distance between the vertical distance of the two adjacent upper and lower single-circulation U-shaped double-plate structures. The distance of its cuboid cross-section structure from the right side support 44 of the machine is consistent with the distance between the U-shaped closed end of the fourth-level single-circulation U-shaped double-plate structure 16 and the left side support 21 of the machine. That is, it is symmetrically arranged with the left and right symmetry line of the main body structure of the machine as the reference. In addition, it should be noted that in the combined connection structure 50 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the third-level single-circulation U-shaped double-plate structure and the fourth-level single-circulation U-shaped double-plate structure, the lower end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are respectively connected to the upper and lower plate surface lines of the top hot fluid channel 30 in the fourth-level single-circulation U-shaped double-plate structure 16 by welding (that is, the lower end line of the cuboid cross-section structure must be welded to the upper layer of the large arc surface and small straight plane spacer fin 37 of the fourth-level single-circulation U-shaped double-plate structure and the arc surface fin 38 of the fourth-level single-circulation U-shaped double-plate structure).

[0051] Next, the straight planar fin 35 of the third-level single-cycle U-shaped double-plate structure 17, the semi-circular curved fin 36 of the third-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure form the third-level single-cycle U-shaped double-plate structure 17. During connection, the three components are welded together to form the third-level single-cycle U-shaped double-plate structure 17, and the structure and position requirements of the third-level single-cycle U-shaped double-plate structure 17 shown in the example figure of this invention are followed, i.e., the straight planar fin 35 of the third-level single-cycle U-shaped double-plate structure, the semi-circular curved fin 36 of the third-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure are connected. The semi-circular curved fins 36 of the single-cycle U-shaped double-plate structure should have a reserved working space 45 for the phase change material at the connection point of the adjacent single-cycle U-shaped double-plate structure on the right side (the distance between them should be greater than the height of the unloading blades 80 on the right side). This space should match the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure. It is important to ensure that the opening of the U-shaped double-plate structure faces right. The outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure is located on the left side of the main body structure. Also, note that the third-level single-cycle U-shaped double-plate structure 17 should be installed with the main body structure aligned with the left and right sides. The symmetrical installation is based on the line of symmetry; at the same time, the distance between the cuboid structure of the outer square and inner circle structure section 77 at the end of each level of the single-cycle U-shaped double-plate structure 17 and the left side bracket 21 of the whole machine is kept at about 25:370 (to form a suitable working space 25 for the phase change material at the end of the single-cycle U-shaped double-plate structure). Note that the upper and lower plate surfaces of the bottom heat fluid channel 30 in the third-stage single-cycle U-shaped double-plate structure 17 are respectively welded and the third-stage single-cycle U-shaped double-plate structure and the fourth-stage single-cycle U-shaped double-plate structure are connected by welding. In the combined connection structure 50 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the U-shaped double-plate structures, the upper end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are connected (that is, the upper end line of the cuboid cross-section structure must be welded to the lower layer of the combined connection structure 50 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the third-level single-circulation U-shaped double-plate structure and the fourth-level single-circulation U-shaped double-plate structure, and the two maintain a certain vertical distance between them), together forming the bottom heat fluid channel 30 in the third-level single-circulation U-shaped double-plate structure 17, and playing the role of supporting the main structure of the whole machine.

[0052] Then, the combined connection structure 47 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the second-level single-circulation U-shaped double-plate structure and the third-level single-circulation U-shaped double-plate structure is installed. During installation, it is installed on the upper right side of the opening end of the third-level single-circulation U-shaped double-plate structure 17. The opening of its semi-cylindrical cross-section structure faces the left and right symmetry line of the main body structure of the machine. Its vertical height is the distance between the third-level single-circulation U-shaped double-plate structure 17 and the second-level single-circulation U-shaped double-plate structure 19, and its symmetry line is on the plane at the midpoint of the distance between the vertical distance of the two adjacent upper and lower single-circulation U-shaped double-plate structures. The distance of its cuboid cross-section structure from the right side support 44 of the machine is consistent with the distance between the U-shaped closed end of the third-level single-circulation U-shaped double-plate structure 17 and the left side support 21 of the machine. That is, it is symmetrically arranged with the left and right symmetry line of the main body structure of the machine as the reference. In addition, it should be noted that in the combined connection structure 47 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the second-stage single-circulation U-shaped double-plate structure and the third-stage single-circulation U-shaped double-plate structure, the lower end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are respectively connected to the upper and lower plate surface lines of the top hot fluid channel 30 in the third-stage single-circulation U-shaped double-plate structure by welding (that is, the lower end line of the cuboid cross-section structure must be welded to the upper layer of the straight planar fin 35 of the third-stage single-circulation U-shaped double-plate structure and the semi-circular curved fin 36 of the third-stage single-circulation U-shaped double-plate structure).

[0053] Next, the second-level single-cycle U-shaped double-plate structure 19 is formed by the straight planar fin 33 of the second-level single-cycle U-shaped double-plate structure, the arc-shaped curved fin 34 of the second-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure. During connection, the three components are welded together to form the second-level single-cycle U-shaped double-plate structure 19, and the structure and position requirements are as shown in the example diagram of the present invention for the second-level single-cycle U-shaped double-plate structure 19, i.e., the straight planar fin 33 of the second-level single-cycle U-shaped double-plate structure, the arc-shaped curved fin 34 of the second-level single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each level of the single-cycle U-shaped double-plate structure. The arc-shaped curved fins 34 of the single-cycle U-shaped double-plate structure should have a reserved working space 45 for the phase change material at the connection point of the adjacent single-cycle U-shaped double-plate structure on the right side (the distance between them should be greater than the height of the unloading blades 80 on the right side). This space should match the outer square and inner circle structural section 77 at the end of each stage of the single-cycle U-shaped double-plate structure. It is important to ensure that the opening of the U-shaped double-plate structure faces right. The outer square and inner circle structural section 77 at the end of each stage of the single-cycle U-shaped double-plate structure is located on the left side of the main body structure. Also, note that the second-stage single-cycle U-shaped double-plate structure 19 should be installed with the main body structure aligned with the left and right sides. The symmetrical installation is based on the line of symmetry; at the same time, the distance between the cuboid structure of the outer square and inner circle structure section 77 of each stage of the single-cycle U-shaped double plate structure 19 and the left side bracket 21 of the whole machine is kept at about 25:370 (to form a suitable working space 25 for the phase change material at the end of the single-cycle U-shaped double plate structure). Note that the upper and lower plate surfaces of the bottom heat fluid channel 30 in the second-stage single-cycle U-shaped double plate structure 19 are respectively connected to the second-stage single-cycle U-shaped double plate structure and the third-stage single-cycle U-shaped double plate structure by welding. The upper ends of the semi-cylindrical and cuboid cross-section structures in the combined connection structure 47 formed by the semi-cylindrical and cuboid cross-section structures between the second-level and third-level single-circulation U-shaped double-plate structures are connected (i.e., the upper end of the cuboid cross-section structure must be welded to the lower layer of the combined connection structure 47 formed by the semi-cylindrical and cuboid cross-section structures between the second-level and third-level single-circulation U-shaped double-plate structures, and the two maintain a certain vertical distance). Together, they form the bottom heat fluid channel 30 in the second-level single-circulation U-shaped double-plate structure 19, and play a role in supporting the main structure of the whole machine.

[0054] Then, the combined connection structure 42 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the first-level single-circulation U-shaped double-plate structure and the second-level single-circulation U-shaped double-plate structure is installed. During installation, it is installed on the upper right side of the opening end of the second-level single-circulation U-shaped double-plate structure 19. The opening of its semi-cylindrical cross-section structure faces the left and right symmetry line of the main body structure of the machine. Its vertical height is the distance between the second-level single-circulation U-shaped double-plate structure 19 and the first-level single-circulation U-shaped double-plate structure 24, and its symmetry line is on the plane at the midpoint of the distance between the vertical distance of the two adjacent upper and lower single-circulation U-shaped double-plate structures. The distance of its cuboid cross-section structure from the right side support 44 of the machine is consistent with the distance between the U-shaped closed end of the second-level single-circulation U-shaped double-plate structure 19 and the left side support 21 of the machine. That is, it is symmetrically arranged with the left and right symmetry line of the main body structure of the machine as the reference. In addition, it should be noted that in the combined connection structure 42 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the first-stage single-circulation U-shaped double-plate structure and the second-stage single-circulation U-shaped double-plate structure, the lower end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are respectively connected to the upper and lower plate surface lines of the top hot fluid channel 30 in the second-stage single-circulation U-shaped double-plate structure 19 by welding (that is, the lower end line of the cuboid cross-section structure must be welded to the upper layer of the straight planar fin 33 of the second-stage single-circulation U-shaped double-plate structure and the arc curved fin 34 of the second-stage single-circulation U-shaped double-plate structure).

[0055] Next, the first-stage single-cycle U-shaped double-plate structure 24 is formed by the folded surface fin 31 of the first-stage single-cycle U-shaped double-plate structure, the straight surface fin 32 of the first-stage single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each stage of the single-cycle U-shaped double-plate structure. During connection, the three components are welded together to form the first-stage single-cycle U-shaped double-plate structure 24, and the structure and position requirements of the first-stage single-cycle U-shaped double-plate structure 24 shown in the example figure of this invention are followed, i.e., the folded surface fin 31 of the first-stage single-cycle U-shaped double-plate structure, the straight surface fin 32 of the first-stage single-cycle U-shaped double-plate structure, and the outer square and inner circle structural section 77 at the ends of each stage of the single-cycle U-shaped double-plate structure are connected. The vertical plane fins 32 of the single-cycle U-shaped double-plate structure should be positioned such that the corresponding working space 45 for the phase change material at the connection point of the adjacent single-cycle U-shaped double-plate structure on the right side is reserved (the distance between them should be greater than the height of the unloading blades 80 on the right side). This space should match the outer square and inner circle structural section 77 at the ends of each stage of the single-cycle U-shaped double-plate structure. It is important to ensure that the opening of the U-shaped double-plate structure faces right. The outer square and inner circle structural section 77 at the ends of each stage of the single-cycle U-shaped double-plate structure is located on the left side of the main body structure. Also, note that the first-stage single-cycle U-shaped double-plate structure 24 should be installed with the left and right sides aligned with the main body structure. The reference line is used for symmetrical installation; at the same time, the distance between the cuboid structure of the outer square and inner circle structure section 77 of each level of the single-cycle U-shaped double plate structure 24 and the left side bracket 21 of the whole machine is kept at about 25:370 (to form a suitable working space 25 for the phase change material at the end of the single-cycle U-shaped double plate structure). Note that the upper and lower plate surfaces of the bottom heat fluid channel 30 in the first-stage single-cycle U-shaped double plate structure 24 are respectively welded and the first-stage single-cycle U-shaped double plate structure and the second-stage single-cycle U-shaped double plate structure are connected by welding. In the combined connection structure 42 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the double-plate structures, the upper end lines of the semi-cylindrical cross-section structure and the cuboid cross-section structure are connected (that is, the upper end line of the cuboid cross-section structure must be welded to the lower layer of the combined connection structure 42 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the first-level single-circulation U-shaped double-plate structure and the second-level single-circulation U-shaped double-plate structure, and the two maintain a certain vertical distance between them), together forming the bottom heat fluid channel 30 in the first-level single-circulation U-shaped double-plate structure 24, and playing the role of supporting the main structure of the whole machine.

[0056] Then, the combined connection structure 41 formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure between the first-stage single-circulation U-shaped double-plate structure and the hot fluid inlet channel is installed. During installation, it is installed on the upper right side of the opening end of the first-stage single-circulation U-shaped double-plate structure 24. The opening of its semi-cylindrical cross-section structure faces the left and right symmetry line of the main body structure of the whole machine. Its vertical height is the distance between the first-stage single-circulation U-shaped double-plate structure 24 and the hot fluid channel 30 of the main body structure of the whole machine. Its symmetry line is on the plane at the midpoint of the distance between the vertical distance of the two adjacent upper and lower single-circulation U-shaped double-plate structures. The distance of its cuboid cross-section structure from the right side support 44 of the whole machine is consistent with the distance between the U-shaped closed end of the first-stage single-circulation U-shaped double-plate structure 24 and the left side support 21 of the whole machine. That is, it is symmetrically arranged with the left and right symmetry line of the main body structure of the whole machine as the reference. In addition, it should be noted that the lower end lines of the semi-cylindrical and cuboid cross-section structures in the combined connection structure 41 formed by the semi-cylindrical and cuboid cross-section structures between the first-stage single-circulation U-shaped double-plate structure and the hot fluid inlet channel are respectively connected to the upper and lower plate surface lines of the top hot fluid channel 30 in the first-stage single-circulation U-shaped double-plate structure 24 by welding (that is, the lower end line of the cuboid cross-section structure must be welded to the upper layer of the folded fin 31 of the first-stage single-circulation U-shaped double-plate structure and the straight planar fin 32 of the first-stage single-circulation U-shaped double-plate structure).

[0057] Next, install and fix the auxiliary structural parts: First, symmetrically install the lower end motor 4 on the left and the lower end motor 70 on the right using bolts at both ends of the front and rear symmetrical lines on the support surface 74 of the whole machine; then, directly weld the front and rear side walls of the main structure wall 88 to the edges of both ends of the front and rear symmetrical lines on the support surface 74 of the whole machine, and also weld them together with the fins of each stage of the single-cycle U-shaped double-plate structure 81. Pay attention to the sealing check, and then weld the left and right side walls tightly against the right side of the motor to the left and right symmetrical lines on the support surface 74 of the whole machine. At both ends; next, the left unloading blade rotating shaft 7 and the right unloading blade rotating shaft 51 are also installed on both sides of the front and rear symmetrical lines of the machine support surface 74, and are respectively located directly above the left front and rear symmetrical center line lower end motor 4 and the right front and rear symmetrical center line lower end motor 70. The motors and rotating shafts are connected by couplings and reducers; then, the left side bracket 21 and the right side bracket 44 of the whole machine are symmetrically welded to the left and right ends of the machine support surface 74, and then the left front and rear symmetrical center line upper end motor 27 and the right front and rear symmetrical center line upper end motor 40 are connected by couplings and reducers. The speed booster is connected to the left unloading blade rotating shaft 7 and the right unloading blade rotating shaft 51 respectively; then the left phase change energy storage material outlet 2 and the right phase change energy storage material outlet 72 are welded to the lower part of the whole machine support surface 74, and are respectively located in the space between the left and right middle of the closed ports of the left and right sides of the left and right symmetrical midline motor 4 and the right symmetrical midline motor 70, respectively; while the left phase change energy storage material inlet 28 and the right phase change energy storage material inlet 39 are welded to the upper part of the hot fluid channel 30 and close to it. The motor 27 at the upper end of the center line of the left front and rear symmetry and the motor 40 at the upper end of the center line of the right front and rear symmetry are located inside the center line of the left front and rear symmetry. The high-temperature hot fluid inlet 29 is then welded to the right side of the left phase change energy storage material inlet 28, while the low-temperature hot fluid outlet 73 is welded to the lower end of the whole machine support surface 74 and located to the left of the right phase change energy storage material outlet 72. Finally, the side hot fluid double-loop pipe and control valve 14 are respectively connected through the double pipes set on the left and lower sides of the whole device to form one circulation, and through the double pipes set on the right and upper sides of the whole device to form another circulation, forming a double closed-loop circulation.

[0058] This invention example only provides a schematic diagram of a nine-stage single-cycle U-shaped double-plate structure connected in series; the actual number of stages can be increased or decreased as needed. Furthermore, the angles between the blades in the left-side unloading blades 78 and the right-side unloading blades 80 can also be adjusted and varied according to actual needs to meet the requirements of different unselected regions for magnetic field changes. In addition, the shape of each blade in the left-side unloading blades 78 and the right-side unloading blades 80 can also adopt the special fin shape of the single-cycle U-shaped double-plate structure 81.

[0059] The working principle of this invention is as follows: First, based on the temperature characteristics of the thermal fluid, a corresponding phase change energy storage material is selected. Then, the selected suitable phase change energy storage material is fed from the left phase change energy storage material inlet 28 into the phase change material working space 22 at the connection of the adjacent single-cycle U-shaped double-plate structure on the left, the phase change material working space 25 at the end of the single-cycle U-shaped double-plate structure, and from the right phase change energy storage material inlet 39 into the phase change material working space 45 at the connection of the adjacent single-cycle U-shaped double-plate structure on the right, and the phase change material working space 48 at the end of the combined connection structure formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure on the right. Then, the hot fluid enters the main structure of the machine through the high-temperature hot fluid inlet 29, and sequentially enters the first-stage single-circulation U-shaped double-plate structure 24, the second-stage single-circulation U-shaped double-plate structure 19, the third-stage single-circulation U-shaped double-plate structure 17, the fourth-stage single-circulation U-shaped double-plate structure 16, the fifth-stage single-circulation U-shaped double-plate structure 12, the sixth-stage single-circulation U-shaped double-plate structure 10, the seventh-stage single-circulation U-shaped double-plate structure 8, the eighth-stage single-circulation U-shaped double-plate structure 5, and the ninth-stage single-circulation U-shaped double-plate structure 3, etc., of the various single-circulation U-shaped double-plate structures. The U-shaped double-plate structure, consisting of a series single-cycle loop, is connected to the phase change material working space 22 at the connection point of the adjacent single-cycle U-shaped double-plate structure on the left, the phase change material working space 25 at the end of the single-cycle U-shaped double-plate structure, the phase change material working space 45 at the connection point of the adjacent single-cycle U-shaped double-plate structure on the right, and the phase change material working space 48 at the end of the combined connection structure formed by the semi-cylindrical cross-section structure and the cuboid cross-section structure. Heat transfer occurs between these phase change materials and the phase change energy storage material, allowing the heat in the hot fluid to be adsorbed and stored in the phase change energy storage material. The stored phase change energy storage material is then continuously unloaded by the different speeds of the unloading blades 78 on the left and the unloading blades 80 on the right, which rotate around the unloading blade axis 51 on the right, and discharged from the left phase change energy storage outlet 2 and the right phase change energy storage outlet 72, respectively. The low-temperature hot fluid, after heat exchange, is discharged from the low-temperature hot fluid outlet 73. If the temperature of the hot fluid is still very high at this time (i.e., its temperature is higher than the required discharge temperature or the temperature requirement of the environment for heat hazard control), after the phase change energy storage material filled last time has been fully discharged, the phase change energy storage material with a phase change operating point temperature between the temperature of the phase change energy storage material filled last time and the temperature of the circulating hot fluid can be replaced. Then, the circulating hot fluid can be brought back into the high-temperature hot fluid inlet 29 by using the double-loop hot fluid pipeline and control valve 14. The above process is repeated again.

[0060] The phase change materials used in this invention at different operating temperatures can be selected from the following: octanoic acid polyethylene glycol E600 or polyethylene glycol E6000 or decanoic acid (operating temperature <50℃), stearic acid or palmitic acid (operating temperature between 50 and 90℃), MgCl2-6H2O or Mg(NO3)2-2H2O (operating temperature between 90 and 150℃), NaNO3-NaCl and NaCl-MgCl2 (operating temperature >150℃), etc. If salt-based phase change materials are selected as the working medium, attention should be paid to taking anti-corrosion measures when in contact with metal pipe materials.

Claims

1. A multi-stage continuous ladder U-fin plate heat storage device for hot fluid heat storage, characterized in that: a. A plurality of levels of single-cycle U-shaped double plate structures arranged from top to bottom are connected in series to form a continuous heat storage structure main body. In the series connection, the opening directions of every two adjacent upper and lower single-cycle U-shaped double plate structures are opposite, and the lower double plate structure of the U-shaped structure in the upper single-cycle U-shaped double plate structure serves as the upper double plate structure of the U-shaped structure in the adjacent lower single-cycle U-shaped double plate structure; wherein the upper single-cycle U-shaped double plate structure and the lower single-cycle U-shaped double plate structure are connected at the end by a combined connection structure formed by an inner half-cylindrical cross-section structure and an outer rectangular cross-section structure; b. The fins in the upper and lower double plate structures of the single-cycle U-shaped double plate structure are composed of a plurality of different shaped special structures, which are arranged in sequence on the fins and are symmetric in height in front and back and left and right; c. To achieve continuous heat storage and continuous replacement of phase change energy storage materials in the phase change energy storage material working space, a leaf unloading device composed of a plurality of levels of unloading blades arranged in an upper and lower interval with the single-cycle U-shaped double plate structure is arranged on the left and right sides of the continuous heat storage structure main body in a symmetrical arrangement manner and rotates reciprocally at a set speed and a set angle; the leaf unloading device includes a transmission shaft symmetrically arranged at the middle part of the left and right sides of the continuous heat storage structure main body for mounting each level of unloading blades, and the reciprocating rotation of the left and right transmission shafts is realized by the upper and lower motors arranged at both ends of the transmission shaft and operating synchronously; d. Double-sided hot fluid circulating devices are arranged on both sides of the main body structure. From the hot fluid discharge port to the hot fluid inlet port, a double-pipe is arranged on the left side and the lower side of the entire device for one-way circulation, and a double-pipe is arranged on the right side and the upper side of the entire device for another way of circulation, forming double closed-loop circulation, realizing multiple circulation of the hot fluid after being heated and stored by the phase change energy storage material, until the discharge requirement of the hot fluid is met, which not only ensures the heat storage effect but also meets the environmental protection requirements.

2. The multi-stage continuous stepped U-fin plate heat storage device for hot fluid heat storage according to claim 1, characterized in that: The structure shape of the fins arranged in the upper and lower double plate structures of the single-cycle U-shaped double plate structure is: half-circular curved fin, folded curved fin, circular arc curved fin, straight plane fin, large circular arc curved fin and small circular arc curved fin interval fin, and fin large circular arc curved fin and small straight plane interval fin, and the shapes of the corresponding two fins in the upper and lower structures of the single-cycle U-shaped double plate structure are different, which is used to increase the working space of the phase change energy storage material in the series circulation U-fin plate structure, prolong the contact time of the phase change energy storage material and the hot fluid, improve the heat transfer rate, and further improve the heat storage efficiency.

3. The multi-stage continuous stepped U-fin plate heat storage device for hot fluid heat storage according to claim 1, characterized in that: The end part of the discharge blade combined with the transmission shaft adopts a semi-cylindrical cross-section structure, the radius of which is smaller than the radius of the semi-cylindrical cross-section structure at the connecting part of the single-cycle U-shaped double-plate structure of the upper stage and the single-cycle U-shaped double-plate structure of the lower stage, and the width of the discharge blade from top to bottom is smaller than the working space width of the phase change energy storage material formed in the area outside the top and bottom heat fluid channels of the main body of the single-cycle U-shaped double-plate structure continuous heat storage structure, and the length of the discharge blade can sweep the working space of the phase change energy storage material formed in the area outside the top and bottom heat fluid channels of the main body of the single-cycle U-shaped double-plate structure continuous heat storage structure. When the discharge blade is installed on the motor-driven transmission shaft, the included angle between every two adjacent discharge blades in the axial direction is 8-11°, and the installation positions of the discharge blades on the motor-driven transmission shaft correspond to the working space of the phase change energy storage material formed when the single-cycle U-shaped double-plate structures are connected in series, and the motor speed is adjusted according to the need to timely discharge the phase change energy storage material which has undergone heat exchange and heat storage from the working space contacted by the heat fluid by the reciprocating rotation of the multi-stage discharge blade.

Images