A solar flat-plate collector core and preparation method thereof

Abstract

The invention discloses a solar flat plate collector plate core and a preparation method thereof, comprising a flat plate collector body and a plate core body arranged therein, wherein a header is symmetrically arranged inside the flat plate collector body below the plate core body, a heat transfer box is arranged on the bottom end surface of the plate core body, a heat transfer box is filled with heat conductive fillers, auxiliary heat plates are arranged in parallel in the heat transfer box, a heat conductive block is passed through the side wall of the auxiliary heat plate, and a clamping heat conductive arc plate is arranged at the protruding end of the heat conductive block; a push spring sleeve rod is arranged at the other end of the heat conductive block, and a connecting assembly is arranged between the heat transfer box and the header on both sides of the bottom end of the plate core body. Through the cooperation of the push spring sleeve rod, the heat conductive block and the clamping heat conductive arc plate, it is convenient to clamp and fix the row pipe, and the appearance of welding defective products is eliminated. At the same time, under the cooperation of high-quality heat transfer plates, auxiliary heat plates, heat conductive fillers, heat conductive superior arc springs, heat transfer arc springs, heat conductive blocks, contact heat conductive plates, positioning heat conductive arc blocks and clamping heat conductive arc plates, the row pipe has a better heat conductive effect.

Description

Technical Field

[0001] The invention belongs to the technical field of flat plate collector cores, and in particular relates to a solar flat plate collector core and a preparation method thereof. Background Art

[0002] A flat-plate solar collector is a device that absorbs solar radiation energy and transfers heat to a working medium. It is a special heat exchanger. The working medium in the collector exchanges heat with the distant sun. A flat-plate solar collector is composed of a heat-absorbing plate core, a shell, a transparent cover, insulation materials and related parts. After adding a circulating pipe and an insulation water tank, it can absorb solar radiation heat and increase the water temperature. The heat-absorbing plate is a component in the flat-plate solar collector that absorbs solar radiation energy and transfers heat to the heat transfer medium. It is basically in the shape of a flat plate. On the flat-plate-shaped heat-absorbing plate, row pipes and headers are usually arranged. The row pipe refers to a component in which the heat-absorbing plate is arranged longitudinally and forms a fluid channel; the header refers to a component in which a plurality of row pipes are horizontally connected at the upper and lower ends of the heat-absorbing plate to form a fluid channel. The row pipes or headers in the prior art are fixed to the heat-absorbing plate core by welding.

[0003] For example, the Chinese patent with announcement number CN108775310A discloses a flat-plate solar panel core retaining spring structure, which is used to correct the welding deformation formed during the welding process between the flow channel and the heat absorbing plate of the flat-plate solar collector plate core, control the effective spacing between the flat-plate solar collector cover plate and the heat absorbing plate to be 1520mm, significantly reduce the heat loss coefficient of the flat-plate solar collector, and improve the photothermal conversion efficiency of the flat-plate solar collector. The flat-plate solar collector plate core retaining spring structure is widely used for fixing the flat-plate solar collector plate core structure, and can reliably fix the flat-plate solar collector plate core structure in the collector frame to prevent the active deformation or wear of the flat-plate solar collector plate core structure during production and transportation. By installing the flat-plate solar collector plate core retaining spring structure, the welding deformation formed during the welding process between the flow channel and the heat absorbing plate of the flat-plate solar collector plate core can be corrected, and the spacing between the flat-plate solar collector heat absorbing plate and the cover plate can be effectively controlled to be between 1520mm, reducing the heat loss coefficient of the flat-plate solar collector, and improving the photothermal conversion efficiency of the flat-plate solar collector.

[0004] However, the above scheme has the following shortcomings: in the above patent document, the welding deformation formed during the welding process between the flow channel of the core of the flat-plate solar collector and the heat absorbing plate is corrected by a retaining spring structure, but the flow channel composed of the row pipes and the header needs to be welded to the core. The flowing medium in the row pipes and the header can absorb the heat conducted by the core, but the contact surface between the row pipes and the core is linear, and the heat conduction area is small. Moreover, the row pipes and the header are usually made of copper tubes. In the process of welding the row pipes and the header, if the welding operation is improper, weld nodules, sand holes, pores, burn-through, welding leakage, etc. are likely to occur, and certain requirements are placed on the welding process. There is a problem that the fluid channel components composed of the row pipes and the header on the flat-plate collector are easily defective and have poor thermal conductivity when they are fixed by welding.

[0005] To this end, we propose a solar flat-plate collector core and a preparation method thereof to solve the problems mentioned in the above background technology. Summary of the invention

[0006] The object of the present invention is to provide a solar flat-plate collector core and a preparation method thereof to solve the problems existing in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A solar flat-plate collector core comprises a flat-plate collector body and a plate core body arranged therein, wherein a header is symmetrically arranged inside the flat-plate collector body and below the plate core body, and a plurality of row pipes are connected and arranged between the headers, and a plurality of heat transfer boxes are arranged on the bottom end surface of the plate core body, and the heat transfer boxes are filled with heat conductive fillers, and auxiliary heat plates are arranged in parallel in the heat transfer boxes, and the top of the auxiliary heat plates is connected to the plate core body, and a mounting opening is arranged on the side wall of the auxiliary heat plate, and a heat conductive block is penetrated in the mounting opening, and the outer end of the heat conductive block slides through the side wall of the heat transfer box, and a clamped heat conductive arc plate is arranged at the protruding end of the heat conductive block, and the clamped heat conductive arc plates on adjacent heat transfer boxes are respectively in contact with and connected to the corresponding side surfaces of the row pipes;

[0009] A push spring sleeve rod is arranged at the other end of the heat conducting block, and the push spring sleeve rod slides through the other side wall of the heat transfer box. A connecting assembly is arranged between the heat transfer box and the header on both sides of the bottom end of the plate core body.

[0010] Preferably, a plurality of high-quality heat transfer plates are embedded in the plate core, the top of the auxiliary heat plate is connected to the high-quality heat transfer plate, the thermal conductivity of the high-quality heat transfer plate and the auxiliary heat plate is greater than that of the plate core, and heat-conducting excellent arc springs are arranged between the auxiliary heat plates at the upper and lower parts of the installation port.

[0011] Preferably, a heat transfer arc spring piece is symmetrically arranged on the inner arc surface of the heat conductive superior arc spring piece, the heat transfer arc spring piece can be in heat conductive contact with the outer surface of the heat conductive block, and a blanking port is provided on the top of the heat conductive superior arc spring piece, and the heat conductive filler can pass through the blanking port.

[0012] Preferably, both sides of the heat transfer box are detachable cover plates, the outer end of the heat conductive block slides through the cover plate on the corresponding side, a contact groove is arranged on the outer wall of the heat conductive block, the contact groove is filled with a thermal grease layer, a contact heat conductive plate is arranged on the outer arc surface of the clamped heat conductive arc plate, the contact heat conductive plate is inserted in the contact groove, and a heat insulating connecting sleeve is provided between the outer arc surface of the clamped heat conductive arc plate and the heat conductive block.

[0013] Preferably, the pushing spring sleeve rod slides through the cover plate on the corresponding side, and the pushing spring sleeve rod generates a spring thrust in the direction of the pipe row on the heat conductive block. A positioning heat conductive arc block is provided between the bottom end surface of the plate core body and the heat transfer box, and the positioning heat conductive arc block can be in heat conductive contact with the top of the pipe row.

[0014] The connection assembly includes plug blocks arranged on both sides of the collecting pipe, and the bottom end surfaces of the heat transfer boxes on the outermost sides of the bottom end surfaces of the plate core body are provided with double-ear connection blocks, the plug blocks and the double-ear connection blocks are inserted into each other, and the connection parts of the plug blocks and the double-ear connection blocks are fixed by screw connection.

[0015] A preparation method for the above-mentioned solar flat-plate collector core comprises the following steps:

[0016] A. Place the plate core body vertically, first put the heat-conducting filler between the auxiliary heat plates through the blanking port, then fix the cover plate on the side of the push spring sleeve rod on the heat transfer box, so that the outer surface of the heat-conducting block is in contact with the heat transfer arc spring sheet, and then put the heat-conducting filler into the heat transfer box again through the gap between the installation port and the heat-conducting block, and finally make the cover plate on the heat-conducting block seal and fix the opening of the heat transfer box;

[0017] B. Inject a thermal grease layer into the contact groove on the heat conducting block, then insert the contact heat conducting plate on the outer side of the clamped heat conducting arc plate into the contact groove, so that the clamped heat conducting arc plate and the heat conducting block are fixedly connected through the heat insulating connecting sleeve;

[0018] C. Pull the push spring sleeve rod outward to separate the clamped heat-conducting arc plates on the adjacent heat transfer boxes. Insert the top of the row pipe into the inner arc surface of the positioning heat-conducting arc block. Release the push spring sleeve rod that is pulled outward to allow the clamped heat-conducting arc plates to clamp and fix the two sides of the inserted row pipe. At the same time, the insert block and the double-ear connecting block are fixed by screw connection.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the row pipes are conveniently clamped and fixed by the cooperation of the push spring sleeve rod, the heat conductive block and the clamping heat conductive arc plate, and the collecting pipes are screwed and fixed by the cooperation of the plug block and the double-ear connecting block, thereby avoiding the connection of the row pipes, the collecting pipes and the plate core body by welding, and eliminating the occurrence of welding defective products. At the same time, with the cooperation of high-quality heat transfer plates, auxiliary heat plates, heat conductive fillers, heat conductive superior arc springs, heat transfer arc springs, heat conductive blocks, contact heat conductive plates, positioning heat conductive arc blocks and clamping heat conductive arc plates, the row pipes can have a better heat conduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a partial cross-section of the overall structure of the present invention;

[0021] Figure 2 for Figure 1 A partial schematic diagram of

[0022] Figure 3 for Figure 2 A schematic diagram of a main view of a local heat transfer block area;

[0023] Figure 4 for Figure 2 A partial cross-sectional schematic diagram of

[0024] Figure 5 It is a schematic diagram of the matching structure of the clamping heat-conducting arc block, the row pipe, the heat-conducting block, the auxiliary heat plate and the push spring sleeve rod of the present invention;

[0025] Figure 6 for Figure 5 A local schematic diagram of the heat conduction arc spring and the heat transfer arc spring area;

[0026] Figure 7 It is a schematic diagram of the separation structure of the heat conducting block and the contact heat conducting plate of the present invention.

[0027] In the figure: 1. Flat plate collector body; 2. Plate core body; 3. Manifold; 4. Row pipe; 5. Heat transfer box; 6. Heat conductive filler; 7. Auxiliary heat plate; 8. Mounting port; 9. Heat conductive block; 10. Clamping heat conductive arc plate; 11. Push spring sleeve rod; 12. High-quality heat transfer plate; 13. Heat conductive arc spring piece; 14. Heat transfer arc spring piece; 15. Blanking port; 16. Cover plate; 17. Contact groove; 18. Thermal grease layer; 19. Contact heat conductive plate; 20. Insulation connecting sleeve; 21. Positioning heat conductive arc block; 22. Insert block; 23. Double-ear connecting block; 101. Main through-hole; 102. Secondary through-hole; 103. Groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] See also Figure 1-7 , the present invention provides a technical solution:

[0030] Embodiment 1:

[0031] A solar flat-plate collector core comprises a flat-plate collector body 1 and a plate core body 2 arranged therein, wherein a manifold 3 is symmetrically arranged below the plate core body 2 inside the flat-plate collector body 1, and the manifold 3 is located above the insulation layer inside the flat-plate collector body 1, and six row pipes 4 are connected between the manifolds 3, and the number of the row pipes 4 can be adaptively adjusted according to the size of the plate core body 2, and six heat transfer boxes 5 are arranged on the bottom end surface of the plate core body 2, and the number of the heat transfer boxes 5 is twice the number of the row pipes 4, and the heat transfer boxes 5 are filled with heat conductive fillers 6, and the heat conductive fillers 6 can be selected from annular alumina particles, which have good heat conductive properties, and the outer surface of the heat transfer box 5 is coated with a heat insulating coating, and the heat insulating coating can be selected from a material with heat insulating functions similar to aerogel coating, and auxiliary heat plates 7 are arranged in parallel in the heat transfer box 5, and the auxiliary heat plates 7 have heat conductive properties The auxiliary heat plate 7 is made of good aluminum alloy. The top of the auxiliary heat plate 7 is connected to the plate core 2. The auxiliary heat plate 7 can conduct heat absorbed by the plate core 2, and the heat transfer area of ​​the plate core 2 in the heat transfer box 5 can be increased by setting the auxiliary heat plate 7. A mounting port 8 is provided on the side wall of the auxiliary heat plate 7. A heat conduction block 9 is passed through the mounting port 8. The gap between the heat conduction block 9 and the mounting port 8 is larger than the diameter of the added annular aluminum oxide particles. The outer end of the heat conduction block 9 slides through the side wall of the heat transfer box 5. The protruding end of the heat conduction block 9 is detachably provided with a clamping heat conduction arc plate 10. The heat conduction block 9 and the clamping heat conduction arc plate 10 are both made of aluminum alloy with good thermal conductivity. The clamping heat conduction arc plates 10 on adjacent heat transfer boxes 5 are respectively in contact with the corresponding side surfaces of the row pipes 4. The clamping heat conduction arc plates 10 on both sides can clamp and fix the row pipes 4 and transfer heat.

[0032] A push spring sleeve rod 11 is welded to the left end of the heat conducting block 9. The push spring sleeve rod 11 slides through the left wall of the heat transfer box 5. Connecting components are provided between the heat transfer box 5 and the header 3 on both sides of the bottom end of the plate core 2.

[0033] Embodiment 2:

[0034] Based on the first embodiment, the auxiliary heat plate 7 is further described. Six high-quality heat transfer plates 12 are embedded in the plate core 2. The number of high-quality heat transfer plates 12 is the same as the number of heat transfer boxes 5. The top of the auxiliary heat plate 7 is connected to the high-quality heat transfer plate 12. The thermal conductivity of the high-quality heat transfer plate 12 and the auxiliary heat plate 7 is greater than that of the plate core 2. The high-quality heat transfer plate 12 can be made of copper sheet with good thermal conductivity. The above-mentioned setting limitation makes it easier for the heat absorbed by the plate core 2 to be conducted by the high-quality heat transfer plate 12, and enters the heat transfer box 5 through the auxiliary heat plate 7 for heat transfer. The auxiliary heat plates 7 are welded at the upper and lower parts of the installation opening 8. A heat-conducting superior arc spring piece 13 is fixed thereto. The heat-conducting superior arc spring piece 13 is made of elastic steel. The heat-conducting superior arc spring piece 13 is in an arched state and has elastic force in the direction of the mounting port 8. A heat-conducting arc spring piece 14 is symmetrically welded and fixed to the inner arc surface of the heat-conducting superior arc spring piece 13. The heat-conducting arc spring piece 14 can be in heat-conducting contact with the outer surface of the heat-conducting block 9 under the action of the heat-conducting superior arc spring piece 13. The heat-conducting arc spring piece 14 can improve the heat-conducting effect of the heat-conducting block 9, and a blanking port 15 is provided on the top of the heat-conducting superior arc spring piece 13. The heat-conducting filler 6 can pass through the blanking port 15, so that the heat-conducting filler 6 and the heat-conducting superior arc spring piece 13 can be in all-round contact.

[0035] Embodiment three:

[0036] Based on the first embodiment, the heat transfer box 5, the clamped heat conductive arc plate 10 and the connecting assembly are further described. Both sides of the heat transfer box 5 are open parts. The open ends of both sides of the heat transfer box 5 are detachably screwed and fixed with cover plates 16. The cover plates 16 can seal and cover the open parts of the heat transfer box 5. The cover plates 16 on the left and right sides of the heat transfer box 5 are respectively provided with main through-holes 101 and symmetrically provided secondary through-holes 102. The outer end of the heat conductive block 9 slides through the main through-holes 101 on the corresponding side cover plates 16. Six contact grooves 17 are arranged on the outer side wall of the heat conductive block 9. The contact grooves 17 are filled with a heat conductive silicone grease layer 18. Six contact heat conductive plates are arranged on the outer arc surface of the clamped heat conductive arc plate 10. 19, the contact heat conducting plate 19 is made of copper with good thermal conductivity, and the contact heat conducting plate 19 is inserted into the contact groove 17. The thermal grease layer 18 can make the thermal block 9 and the contact heat conducting plate 19 fully contact and conduct heat. A groove 103 is also provided on the outer surface of the contact heat conducting plate 19. The groove 103 can enter when the thermal grease layer 18 is heated and expanded. The design of the groove 103 can increase the contact area between the thermal grease layer 18 and the contact heat conducting plate 19, thereby improving the heat transfer effect. A heat insulating connecting sleeve 20 is provided between the outer arc surface of the clamped heat conducting arc plate 10 and the heat conducting block 9. The heat insulating connecting sleeve 20 can be made of glass fiber thermal insulation cotton. The heat insulating connecting sleeve 20 and the clamped heat conducting arc plate 10 are connected to the heat conducting block 9. The heat-conducting arc plate 10 and the heat-conducting block 9 can be fixed by bonding. The setting of the heat-insulating connecting sleeve 20 can reduce the exposed area of ​​the clamped heat-conducting arc plate 10, reduce the heat loss on the clamped heat-conducting arc plate 10, and the push spring sleeve rod 11 slides through the secondary through-hole 102 on the corresponding side cover plate 16. The push spring sleeve rod 11 on the cover plate 16 generates a spring thrust in the direction of the discharge pipe 4 on the heat-conducting block 9, so that the clamped heat-conducting arc plate 10 is tightly fitted with the side surface of the discharge pipe 4. The bottom end surface of the plate core body 2 is located between the heat transfer box 5 and a positioning heat-conducting arc block 21 is welded. The positioning heat-conducting arc block 21 is made of aluminum alloy with good thermal conductivity. The positioning heat-conducting arc block 21 can be aligned with the discharge pipe 4. The top is in heat conduction contact, and the positioning heat conduction arc block 21 is used to facilitate the positioning and installation of the row pipe 4, and the heat transfer treatment can be performed on the top of the row pipe 4; the connection component includes plug blocks 22 welded on both sides of the header 3, and the bottom end faces of the outermost heat transfer boxes 5 on both sides of the bottom end face of the plate core body 2 are welded or screwed with double-ear connection blocks 23, the plug blocks 22 and the double-ear connection blocks 23 are inserted together, and the side walls of the plug blocks 22 are provided with threaded grooves not shown in the figure, and the side walls of the double-ear connection blocks 23 are provided with connection holes, and the connection parts of the plug blocks 22 and the double-ear connection blocks 23 are fixed by screwing, and specifically, fixing bolts are inserted into the connection holes and the threaded grooves in turn, so as to facilitate the fixing between the header 3 and the heat transfer box 5.

[0037] A preparation method for the above-mentioned solar flat-plate collector core comprises the following steps:

[0038] A. Place the plate core 2 vertically, firstly put the heat conductive filler 6 between the auxiliary heat plates 7 through the blanking opening 15, then fix the cover plate 16 on the side of the push spring sleeve rod 11 on the heat transfer box 5, so that the outer surface of the heat conductive block 9 is in contact with the heat transfer arc spring sheet 14, and then put the heat conductive filler 6 into the heat transfer box 5 again through the gap between the installation opening 8 and the heat conductive block 9, and finally make the cover plate 16 on the heat conductive block 9 seal and fix the opening of the heat transfer box 5;

[0039] B, injecting a thermal grease layer 18 into the contact groove 17 on the heat conducting block 9, and then inserting the contact heat conducting plate 19 on the outer side of the clamping heat conducting arc plate 10 into the contact groove 17, so that the clamping heat conducting arc plate 10 and the heat conducting block 9 are fixedly connected through the heat insulating connecting sleeve 20;

[0040] C. Push the push spring sleeve rod 11 outward to separate the clamped heat-conducting arc plates 10 on the adjacent heat transfer boxes 5. Insert the top of the row pipe 4 into the inner arc surface of the positioning heat-conducting arc block 21. Release the pushed spring sleeve rod 11 to clamp the clamped heat-conducting arc plates 10 on both sides of the inserted row pipe 4. At the same time, the insert block 22 and the double-ear connecting block 23 are fixed by screw connection.

[0041] The working principle is as follows: during the installation of the plate core 2, the plate core 2 is first placed vertically, and the heat conductive filler 6 is placed between the auxiliary heat plates 7 through the blanking port 15. Then, the cover plate 16 corresponding to the push spring sleeve rod 11 is fixed to the open part of the outer side of the heat transfer box 5. The heat conductive filler 6 is added into the heat transfer box 5 through the remaining gap of the installation port 8. It is necessary to ensure that the amount of heat conductive filler 6 added is appropriate, and there is a local space in the heat transfer box 5 so that the heat conductive block 9 can slide freely horizontally in the heat transfer box 5. At the same time, the heat conductive arc spring piece 14 is in heat conductive contact with the outer surface of the heat conductive block 9 under the action of the heat conductive superior arc spring piece 13. Then, the right cover plate 16 is installed in the open part inside the heat transfer box 5. Lubricating sealing oil is applied to the outer end surfaces of the main through-hole 101 and the secondary through-hole 102. The lubricating sealing oil is a mature product of the existing technology, which can perform a good sealing treatment on the main through-hole 101 and the secondary through-hole 102, and will not affect the horizontal sliding of the push spring sleeve rod 11 and the heat conduction block 9. Then, the top of the row pipe 4 is moved toward and contacted with the inner arc surface of the positioning heat conduction arc block 21, so that the clamping heat conduction arc plates 10 on the heat transfer boxes 5 on both sides clamp and fix the row pipe 4 under the action of the push spring sleeve rod 11. In the above process, the plug block 22 located on the manifold 3 will be inserted into the double-ear connection block 23, and the plug block 22 and the double-ear connection block 23 are screwed and fixed by bolts;

[0042] During daily use, the heat absorbed by the plate core 2 will be gathered on the high-quality heat transfer plate 12, and the high-quality heat transfer plate 12 will transfer the heat to the heat transfer box 5 through the auxiliary heat plate 7. The heat-conducting filler 6 in the heat transfer box 5 can absorb the heat on the contact surface with the plate core 2 and the auxiliary heat plate 7 respectively, and the heat-conducting filler 6 will finally transfer the heat to the heat-conducting block 9, and the auxiliary heat plate 7 can also transfer the heat to the outer surface of the heat-conducting block 9 through the cooperation of the heat-conducting superior arc spring piece 13 and the heat-conducting arc spring piece 14. The thermal grease layer 18 located in the contact groove 17 of the heat-conducting block 9 can transfer the heat to the contact heat-conducting plate 19, and the contact heat-conducting plate 19 directly transfers the heat to the clamped heat-conducting arc plate 10, and the clamped heat-conducting arc plate 10 is connected in a heat-insulating manner. The heat insulation of the sleeve 20 transfers heat to the contact side of the row pipe 4 to the maximum extent. The row pipe 4 is conveniently clamped and fixed by the cooperation of the push spring sleeve rod 11, the heat conductive block 9 and the clamping heat conductive arc plate 10, and the collector 3 is screwed and fixed by the cooperation of the plug block 22 and the double-ear connecting block 23, avoiding the connection between the row pipe 4, the collector 3 and the plate core 2 by welding, and eliminating the occurrence of welding defective products. At the same time, with the cooperation of the high-quality heat transfer plate 12, the auxiliary heat plate 7, the heat conductive filler 6, the heat conductive superior arc spring piece 13, the heat transfer arc spring piece 14, the heat conductive block 9, the contact heat conductive plate 19, the positioning heat conductive arc block 21 and the clamping heat conductive arc plate 10, the row pipe 4 can have a better heat conduction effect.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solar flat-plate collector core, comprising a flat-plate collector body (1) and a core body (2) arranged therein, characterized in that: The flat plate heat collector body (1) is symmetrically provided with headers (3) located below the plate core body (2), and a plurality of row pipes (4) are provided in communication between the headers (3). A plurality of heat transfer boxes (5) are arranged on the bottom end surface of the plate core body (2), and the heat transfer boxes (5) are filled with heat conductive fillers (6). Auxiliary heat plates (7) are arranged in parallel in the heat transfer boxes (5), and the tops of the auxiliary heat plates (7) are connected to the plate core body (2), and mounting openings (8) are provided on the side walls of the auxiliary heat plates (7); A plurality of high-quality heat transfer plates (12) are embedded in the plate core (2); the top of the auxiliary heat plate (7) is connected to the high-quality heat transfer plate (12); the thermal conductivity of the high-quality heat transfer plate (12) and the auxiliary heat plate (7) is greater than that of the plate core (2); and heat-conducting superior arc spring pieces (13) are provided between the auxiliary heat plates (7) at the upper and lower parts of the mounting opening (8); A heat conducting block (9) is inserted into the installation opening (8), and the outer end of the heat conducting block (9) slides through the side wall of the heat transfer box (5). A clamping heat conducting arc plate (10) is provided at the protruding end of the heat conducting block (9), and the clamping heat conducting arc plates (10) on adjacent heat transfer boxes (5) are respectively in contact with and connected to the corresponding side surfaces of the row pipes (4); Both sides of the heat transfer box (5) are provided with detachable cover plates (16); the outer end of the heat conductive block (9) slides through the cover plate (16) on the corresponding side; a contact groove (17) is arranged on the outer wall of the heat conductive block (9); the contact groove (17) is filled with a heat conductive silicone grease layer (18); a contact heat conductive plate (19) is arranged on the outer arc surface of the clamped heat conductive arc plate (10); the contact heat conductive plate (19) is inserted into the contact groove (17); and a heat insulating connecting sleeve (20) is arranged between the outer arc surface of the clamped heat conductive arc plate (10) and the heat conductive block (9); A push spring sleeve rod (11) is provided at the other end of the heat conducting block (9), and the push spring sleeve rod (11) slides through the other side wall of the heat transfer box (5), and a connecting component is provided between the heat transfer box (5) and the header (3) on both sides of the bottom end of the plate core body (2); The connection assembly comprises plug blocks (22) arranged on both sides of the header (3); the bottom end surfaces of the outermost heat transfer boxes (5) on both sides of the bottom end surface of the plate core body (2) are provided with double-ear connection blocks (23); the plug blocks (22) and the double-ear connection blocks (23) are inserted into each other in a matching manner, and the connection between the plug blocks (22) and the double-ear connection blocks (23) is fixed by screw connection.

2. A solar flat-plate collector core according to claim 1, characterized in that: A heat transfer arc spring piece (14) is symmetrically arranged on the inner arc surface of the heat conductive superior arc spring piece (13), the heat transfer arc spring piece (14) can be in heat conductive contact with the outer surface of the heat conductive block (9), and a blanking opening (15) is provided on the top of the heat conductive superior arc spring piece (13), and the heat conductive filler (6) can pass through the blanking opening (15).

3. A solar flat-plate collector core according to claim 2, characterized in that: The push spring sleeve rod (11) slides through the cover plate (16) on the corresponding side, and the push spring sleeve rod (11) generates a spring thrust on the heat conductive block (9) in the direction of the row pipe (4). The bottom end surface of the plate core body (2) is located between the heat transfer boxes (5) and is provided with a positioning heat conductive arc block (21). The positioning heat conductive arc block (21) can be in heat conductive contact with the top of the row pipe (4).

4. A preparation method for the solar flat panel collector core according to any one of claims 1 to 3, characterized in that: The steps include: A, the plate core (2) is placed vertically, and the heat conductive filler (6) is initially placed between the auxiliary heat plates (7) through the blanking opening (15), and then the cover plate (16) on the side of the push spring sleeve rod (11) is fixed on the heat transfer box (5), so that the outer surface of the heat conductive block (9) is in contact with the heat transfer arc spring sheet (14) and connected, and the heat conductive filler (6) is again placed in the heat transfer box (5) through the gap between the installation opening (8) and the heat conductive block (9), and finally the cover plate (16) on the heat conductive block (9) is sealed and fixed to the opening of the heat transfer box (5); B, injecting a thermally conductive silicone grease layer (18) into the contact groove (17) on the heat conducting block (9), and then inserting the contact heat conducting plate (19) on the outer side of the clamping heat conducting arc plate (10) into the contact groove (17), so that the clamping heat conducting arc plate (10) and the heat conducting block (9) are fixedly connected via the heat insulating connecting sleeve (20); C, the push spring sleeve rod (11) is pulled outward to separate the heat-conducting arc plates (10) clamped on the adjacent heat transfer boxes (5) from each other, and the top of the row pipe (4) is inserted into the inner arc surface of the positioning heat-conducting arc block (21). The push spring sleeve rod (11) that is pulled outward is released to clamp the heat-conducting arc plates (10) on both sides of the inserted row pipe (4), and at the same time, the insertion block (22) and the double-ear connection block (23) are fixed by screw connection.

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