Heat absorber tube panel heat preservation module

Abstract

The utility model discloses a heat preservation module of a heat absorber tube panel, which relates to the technical field of heat preservation of the heat absorber tube panel and comprises a heat preservation module mounted on a backlight side of the heat absorber tube panel, the heat preservation module is in contact with the heat absorber tube panel in an attached manner, and the heat preservation module comprises a support frame and a heat preservation component mounted on the support frame. The heat preservation assembly comprises a plurality of heat preservation units arranged on the supporting frame in the width direction of the heat absorber tube panel. The design is reasonable, and according to the structural size of the heat absorber, the heat preservation unit is arranged in a mode of spreading in the width direction of the heat absorber tube panel. Not only are the problems of multiple abutted seams and air leakage among the thermal insulation materials avoided, but also the workload of filling the abutted seams is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat absorber tube screen insulation, and more specifically to the technical field of a heat absorber tube screen insulation module. Background Art

[0002] A heat absorber is the core equipment for realizing photo-thermal conversion in a tower-type solar power station. The equipment is installed on the conversion platform of the heat absorption tower at about 180 meters. Its safe and efficient operation is of extremely important significance to the power station. For the heat absorber, its heat absorption tube screen is divided into the light-facing side and the backlight side. According to the characteristics of the high concentration ratio of the tower-type solar thermal power station, the light-facing side receives direct irradiation from the reflected light spots of the mirror field for heat absorption and energy conversion, and needs to bear a high heat load. The backlight side is usually an adiabatic insulation structure, which is used to reduce heat loss to improve the operation efficiency of the heat absorber.

[0003] Compared with the heat absorption surface tube screen of a conventional thermal power unit, the heat absorption tubes of a tower-type solar thermal power station are of an independent light tube structure. The heat absorber tube screen has the characteristics of very thin heat absorption tube wall thickness, large tube screen length, expensive heat absorption tubes, and long manufacturing period.

[0004] Since the thermal insulation construction is usually arranged after the equipment is in place, and the heat absorber is installed more than 180 meters above the ground, the heat absorber thermal insulation construction has the characteristics of narrow construction operation space, large equipment size, complex process, high construction risk, high precision control requirements, etc. And due to the limitation that the heat absorption tube cannot be repaired if damaged and must be replaced as a whole, the thermal insulation of the heat absorber, especially the installation of the back of the tube screen, is very difficult.

[0005] The patent with the publication number CN212457459U discloses the following content: A modular thermal insulation structure applicable to the heat absorber of a tower-type solar thermal power station, mainly including the thermal insulation on the backlight side of the tube screen and the support frame of the tube screen. The thermal insulation on the back of the tube screen is divided into thermal insulation modules of multiple spans, multiple layers and multiple blocks according to the tube screen structure, and is fixed on the support frame of the tube screen through flat fixing parts. This thermal insulation structure is relatively complex, with many and fragmented thermal insulation modules, and it is not easy to replace during use. And the flat fixing parts have low strength and are not enough to support the thermal insulation modules. They are easy to deform during the installation process and must be used in cooperation with the support frame of the tube screen, so the installation is more difficult.

[0006] In summary, due to the special structure and installation requirements of the heat absorber of the tower-type solar thermal power station, the heat absorber tube screen thermal insulation structure is complex and the construction difficulty is great. Overcoming the defects of the above-mentioned existing technologies is an urgent problem to be solved in this field. Content of the Utility Model

[0007] The purpose of the utility model is: In order to solve the above technical problems, the utility model provides a heat absorber tube screen insulation module.

[0008] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0009] The utility model provides a heat absorber tube screen thermal insulation module. The thermal insulation module is installed on the backlight side of the heat absorber tube screen and is in close contact with the heat absorber tube screen. The thermal insulation module includes a support frame and a thermal insulation component installed on the support frame. The thermal insulation component includes a plurality of thermal insulation units arranged on the support frame along the width direction of the heat absorber tube screen.

[0010] Specifically, as Figure 1 shown, the tube screen thermal insulation module is installed on the backlight side of the heat absorber tube screen. The thermal insulation module is only in close contact with the heat absorber tube screen and is not installed by the conventional method of welding or fixing metal parts on the tube screen. According to the operating temperature of the tube screen and environmental conditions, combined with the structural space on the back of the heat absorber tube screen, a suitable thermal insulation material is selected to determine the thermal insulation thickness. According to the structural dimensions of the heat absorber, the thermal insulation units are arranged in a way of laying across the width direction of the heat absorber tube screen. This not only avoids the problems of many seams and air leakage between the thermal insulation materials, but also reduces the workload of filling the seams.

[0011] In one embodiment, each thermal insulation unit adopts a "soft-hard combination" mode combining soft thermal insulation materials and hard thermal insulation materials.

[0012] In one embodiment, the support frame includes a frame, a plurality of connecting pieces arranged on the frame, and a connecting bolt assembly for locking the thermal insulation unit on the corresponding connecting piece.

[0013] Specifically, the back of the thermal insulation unit is the support frame, and the thermal insulation unit is fixed on the support frame by bolts. While improving the structural strength of the thermal insulation component, it also makes the whole thermal insulation structure integrally formed, realizing the modularization of thermal insulation.

[0014] In one embodiment, the size of the frame is adapted to the size of the thermal insulation module, and the frame is a rectangular frame welded by a plurality of rectangular tubes.

[0015] In one embodiment, the connecting piece is an L-shaped connecting piece. One side of the L-shaped connecting piece is welded on the frame, and a kidney-shaped hole is arranged on the other side of the L-shaped connecting piece. The connecting bolt assembly cooperates with the corresponding kidney-shaped hole.

[0016] Specifically, the support frame is composed of connecting bolts, connecting pieces and a frame, as shown in Figure 3 . The frame is welded by rectangular tubes according to the size requirements of the thermal insulation module. The connecting piece is an L-shaped connecting piece, and a kidney-shaped hole is opened on one side of the L-shaped connecting piece, as shown in Figure 2 . The connecting piece can be welded by steel plates according to strength calculation, or angle steel can be directly selected. The connecting piece is welded to the frame.

[0017] In one embodiment, the connecting bolt assembly includes a screw rod, an end plate welded to one end of the screw rod, and a locking assembly arranged at the other end of the screw rod. The locking assembly includes a nut and a gasket.

[0018] In one embodiment, the length of the screw is greater than the thickness of the insulation unit. The end plate is a steel plate with a diameter of 50 mm, and the screw is welded at the center of the end plate.

[0019] Specifically, the connecting bolt assembly is made of high-temperature resistant materials and consists of nuts, gaskets, screws, and end plates. For details, see Figure 4 . The length of the screw is determined according to the thickness of the insulation unit. The end plate is a steel plate with a diameter of 50 mm, and the screw is welded at the center of the end plate.

[0020] In one embodiment, each insulation unit includes a soft insulation layer, a stainless steel foil, a first rigid insulation layer, a second rigid insulation layer, and a metal guard plate arranged in sequence. The soft insulation layer is attached to the absorber tube panel. The end plate is located on the side of the soft insulation layer close to the absorber tube panel, and the nut and gasket are located on the side of the metal guard plate.

[0021] Specifically, as shown in Figure 2 , from the inside to the outside (taking the absorber tube panel as the reference), the insulation unit is successively a soft insulation layer, a stainless steel foil, a first rigid insulation layer, a second rigid insulation layer, and a metal guard plate. For details, see Figure 3 . The insulation unit adopts a "soft-hard combination" mode that combines soft insulation materials and rigid insulation materials. The insulation component is mainly composed of rigid insulation boards, and soft insulation materials (such as magnesium silicate fiber blankets, etc.) are used in the area close to the heat absorption tube. It can not only serve as a buffer between the insulation module and the heat absorption tube but also protect the heat absorption tube from being scratched by the connecting bolts. The insulation component integrates insulation metal parts, improving the overall strength and solving the problem of multiple construction processes.

[0022] Since the insulation unit is mainly composed of rigid insulation boards and has high self-strength, and is supplemented by support frames for reinforcement; the modular insulation structure can be replaced quickly and simply. After determining the replacement area according to the replacement requirement, first cut off the support frame and then take out the insulation material. Replace the insulation board according to the size, or castable can be used, and then weld the support frame to restore the insulation structure.

[0023] In one embodiment, the material of the first rigid insulation layer is one of calcium silicate board, ceramic fiber board, or nano-micro hole insulation board;

[0024] The material of the second rigid insulation layer is one of calcium silicate board, ceramic fiber board, or nano-micro hole insulation board.

[0025] Specifically, as shown in Figure 1As shown, certain angles need to be preset on both sides of the thermal insulation module. The first rigid thermal insulation layer and the second rigid thermal insulation layer are formed by cutting a rigid thermal insulation material board. The rigid thermal insulation material can be calcium silicate board, ceramic fiber board or nano-microporous heat insulation board. According to the thickness of the tube panel thermal insulation module, the first rigid thermal insulation layer and the second rigid thermal insulation layer can adopt different materials or the same material.

[0026] In one embodiment, the soft thermal insulation layer is magnesium silicate fiber blanket.

[0027] Working principle: When assembling the thermal insulation module, first use a high-temperature adhesive to bond the stainless steel foil to the rigid thermal insulation layer, and then fix the stainless steel foil, the first rigid thermal insulation layer, the second rigid thermal insulation layer and the metal guard plate to the support frame through connecting bolts. Pay attention to the tightness when fixing each layer of thermal insulation material with connecting bolts, and it is appropriate that the end plate sinks into the thermal insulation material by 1 mm. Then bond the soft thermal insulation layer to the stainless steel foil, and finally form as a whole. When bonding the soft thermal insulation layer to the stainless steel foil, it must be noted that the bonding surface between the soft thermal insulation layer and the stainless steel foil must be the needle-punched surface; the high-temperature adhesive must cover the end plate completely to ensure that the soft thermal insulation layer is firmly bonded to the end plate. The soft thermal insulation layer is magnesium silicate fiber blanket, which can not only serve as a buffer zone between the thermal insulation module and the heat absorption tube, but also protect the heat absorption tube from being scratched by the connecting bolts.

[0028] In order to avoid light leakage and achieve better thermal insulation effect, adjacent two thermal insulation modules in the height direction are assembled with staggered joints, as Figure 5 shown. When installing the thermal insulation module, a 5-mm magnesium silicate fiber blanket needs to be stuffed into the gap between the modules. It can be first bonded to the module and then installed in place, or it can be filled with loose cotton and then coated with a high-temperature adhesive to ensure that there is no gap between the modules.

[0029] When installing the thermal insulation module, follow the principle from the lower header to the upper header and fill them in sequence. When replacing, first cut off the frame and then take out the thermal insulation material. Replace the thermal insulation board according to the size, or refractory castable can be used.

[0030] The beneficial effects of the present utility model are as follows:

[0031] The thermal insulation component adopts a "soft-hard combination" mode of combining soft thermal insulation materials and rigid thermal insulation materials, which ensures the thermal insulation effect while providing overall strength. The thermal insulation component is mainly composed of rigid thermal insulation boards, integrating thermal insulation metal parts. The thermal insulation materials are laid in layers, with fewer installation procedures for metal parts and less assembly workload. The back of the thermal insulation component is a support frame, and the thermal insulation is fixed to the support frame through bolts. While improving the structural strength of the thermal insulation component, it also makes the whole thermal insulation structure formed as a whole, realizing the modularization of thermal insulation. The modular thermal insulation structure meets the requirement of overall delivery after in-factory assembly of the thermal insulation component, which is beneficial to the control of thermal insulation construction quality. The modular thermal insulation structure can be directly installed on site after being delivered to the site, with less on-site installation workload and better thermal insulation construction quality. Brief Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a schematic diagram of the installation position of the heat absorber tube screen insulation module;

[0034] Figure 2 It is a schematic diagram of the heat absorber tube screen insulation module (front view);

[0035] Figure 3 It is a schematic diagram of the heat absorber tube screen insulation module (side view);

[0036] Figure 4 It is a schematic diagram of the connecting bolt;

[0037] Figure 5 It is a schematic diagram of the splicing between the upper / lower modules;

[0038] Reference Numerals: 1 - insulation assembly, 2 - support frame;

[0039] 11 - soft insulation layer, 12 - stainless steel foil, 13 - first rigid insulation layer, 14 - second rigid insulation layer, 15 - metal guard plate;

[0040] 21 - connecting bolt assembly, 22 - L-shaped connecting piece, 23 - frame;

[0041] 211 - nut, 212 - gasket, 213 - screw rod, 214 - end plate. Detailed Embodiments

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts fall within the scope of protection of the present invention.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0045] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0046] Embodiment 1

[0047] This embodiment provides a heat absorber tube screen insulation module. The insulation module is installed on the backlight side of the heat absorber tube screen. The insulation module is in close contact with the heat absorber tube screen. The insulation module includes a support frame 2 and an insulation component 1 installed on the support frame 2. The insulation component 1 includes a plurality of insulation units arranged on the support frame 2 along the width direction of the heat absorber tube screen.

[0048] Specifically, as Figure 1 shown, the tube screen insulation module is installed on the backlight side of the heat absorber tube screen. The insulation module is only in close contact with the heat absorber tube screen and is not installed by the conventional method of welding or fixing metal parts on the tube screen. According to the operating temperature of the tube screen and environmental conditions, combined with the structural space on the back of the heat absorber tube screen, a suitable insulation material is selected to determine the insulation thickness. According to the structural dimensions of the heat absorber, the insulation units are arranged in a way of laying across the width direction of the heat absorber tube screen. This not only avoids the problems of many seams and air leakage between the insulation materials, but also reduces the workload of filling the seams.

[0049] Embodiment 2

[0050] This embodiment provides a heat absorber tube screen insulation module. The insulation module is installed on the backlight side of the heat absorber tube screen. The insulation module is in close contact with the heat absorber tube screen. The insulation module includes a support frame 2 and an insulation component 1 installed on the support frame 2. The insulation component 1 includes a plurality of insulation units arranged on the support frame 2 along the width direction of the heat absorber tube screen.

[0051] Each heat preservation unit adopts a "soft-hard combination" mode combining soft heat preservation materials and hard heat preservation materials.

[0052] The support frame 2 includes a frame 23, a plurality of connecting pieces arranged on the frame 23, and a connecting bolt assembly 21 for locking the heat preservation unit to the corresponding connecting piece.

[0053] Specifically, the back of the heat preservation unit is the support frame 2, and the heat preservation unit is fixed on the support frame 2 through bolts. While improving the structural strength of the heat preservation assembly 1, it also makes the entire heat preservation structure integrally formed, realizing heat preservation modularization.

[0054] Embodiment 3

[0055] This embodiment provides a heat absorber tube screen heat preservation module. The heat preservation module is installed on the backlight side of the heat absorber tube screen, and the heat preservation module is in close contact with the heat absorber tube screen. The heat preservation module includes a support frame 2 and a heat preservation assembly 1 installed on the support frame 2. The heat preservation assembly 1 includes a plurality of heat preservation units arranged on the support frame 2 along the width direction of the heat absorber tube screen.

[0056] Each heat preservation unit adopts a "soft-hard combination" mode combining soft heat preservation materials and hard heat preservation materials.

[0057] The support frame 2 includes a frame 23, a plurality of connecting pieces arranged on the frame 23, and a connecting bolt assembly 21 for locking the heat preservation unit to the corresponding connecting piece.

[0058] The size of the frame 23 is adapted to the size of the heat preservation module. The frame 23 is a rectangular frame formed by welding a plurality of rectangular tubes.

[0059] The connecting piece is an L-shaped connecting piece 22. One side of the L-shaped connecting piece 22 is welded to the frame 23, and a kidney-shaped hole is provided on the other side of the L-shaped connecting piece 22. The connecting bolt assembly 21 cooperates with the corresponding kidney-shaped hole.

[0060] Specifically, the support frame 2 is composed of connecting bolts, connecting pieces, and the frame 23. For details, see Figure 3 . The frame 23 is welded by rectangular tubes according to the size requirements of the heat preservation module. The connecting piece is an L-shaped connecting piece 22, and a kidney-shaped hole is opened on one side of the L-shaped connecting piece 22. For details, see Figure 2 . The connecting piece can be welded by steel plates according to strength calculation, or angle steel can be directly selected. The connecting piece is welded to the frame 23.

[0061] Embodiment 4

[0062] This embodiment is further optimized on the basis of any one of Embodiments 1 to 3. Specifically:

[0063] The connecting bolt assembly 21 includes a screw rod 213, an end plate welded to one end of the screw rod 213, and a locking assembly provided at the other end of the screw rod 213. The locking assembly includes a nut 211 and a gasket 212.

[0064] The length of the screw rod 213 is greater than the thickness of the insulation unit. The end plate is a steel plate with a diameter of 50 mm, and the screw rod 213 is welded to the center of the end plate.

[0065] Specifically, the connecting bolt assembly 21 is made of high-temperature resistant materials and consists of a nut 211, a gasket 212, a screw rod 213, and an end plate. For details, see Figure 4 The length of the screw rod 213 is determined according to the thickness of the insulation unit. The end plate is a steel plate with a diameter of 50 mm, and the screw rod 213 is welded to the center of the end plate.

[0066] Example 5

[0067] This embodiment is further optimized on the basis of any one of Embodiments 1 to 5. Specifically:

[0068] Each insulation unit includes a soft insulation layer 11, a stainless steel foil 12, a first rigid insulation layer 13, a second rigid insulation layer 14, and a metal guard plate 15 arranged in sequence. The soft insulation layer 11 is attached to the absorber tube panel. The end plate is located on the side of the soft insulation layer 11 close to the absorber tube panel, and the nut 211 and the gasket 212 are located on the side of the metal guard plate 15.

[0069] Specifically, as Figure 2 shown, the insulation unit from the inside to the outside (taking the absorber tube panel as the reference) is successively a soft insulation layer 11, a stainless steel foil 12, a first rigid insulation layer 13, a second rigid insulation layer 14, and a metal guard plate 15. For details, see Figure 3 The insulation unit adopts a "soft-hard combination" mode combining soft insulation materials and hard insulation materials. The insulation component 1 is mainly composed of rigid insulation boards, and soft insulation materials (such as magnesium silicate fiber blankets, etc.) are used in the area close to the heat absorption tube. It can not only serve as a buffer zone between the insulation module and the heat absorption tube, but also protect the heat absorption tube from being scratched by the connecting bolts. The insulation component 1 integrates insulation metal parts, improving the overall strength while solving the problem of many construction procedures.

[0070] Since the insulation unit is mainly composed of rigid insulation boards, it has high self-strength; it is further strengthened by the support frame 2; the modular insulation structure can achieve fast and simple replacement. After determining the replacement area according to the replacement requirements, first cut off the support frame 2 and then take out the insulation material. Replace the insulation board according to the size, or castable can be used, and then weld the support frame 2 to restore the insulation structure.

[0071] Example 7

[0072] This embodiment is a further optimization based on Embodiment 6. Specifically:

[0073] The material of the first rigid thermal insulation layer 13 is one of calcium silicate board, ceramic fiber board or nano-micro pore heat insulation board;

[0074] The material of the second rigid thermal insulation layer 14 is one of calcium silicate board, ceramic fiber board or nano-micro pore heat insulation board.

[0075] Specifically, as Figure 1 shown, certain angles need to be preset on both sides of the thermal insulation module. The first rigid thermal insulation layer 13 and the second rigid thermal insulation layer 14 are cut and formed from rigid thermal insulation material boards. The rigid thermal insulation material can be calcium silicate board, ceramic fiber board or nano-micro pore heat insulation board. According to the thickness of the tube screen thermal insulation module, the first rigid thermal insulation layer 13 and the second rigid thermal insulation layer 14 can adopt different materials or the same material.

[0076] The soft thermal insulation layer 11 is magnesium silicate fiber blanket.

[0077] Working principle: When assembling the thermal insulation module, first use a high-temperature adhesive to bond the stainless steel foil 12 to the rigid thermal insulation layer, and then fix the stainless steel foil 12, the first rigid thermal insulation layer 13, the second rigid thermal insulation layer 14 and the metal guard plate 15 to the support frame 2 through connecting bolts. Pay attention to the tightness when fixing each layer of thermal insulation material with connecting bolts, and it is appropriate that the end plate sinks into the thermal insulation material by 1 mm. Then bond the soft thermal insulation layer 11 to the stainless steel foil 12, and finally form as a whole. When bonding the soft thermal insulation layer 11 to the stainless steel foil 12, it must be noted that the bonding surface between the soft thermal insulation layer 11 and the stainless steel foil 12 must be the needle-punched surface; the high-temperature adhesive must cover the end plate completely to ensure that the soft thermal insulation layer 11 is firmly bonded to the end plate. The soft thermal insulation layer 11 is magnesium silicate fiber blanket, which can not only serve as a buffer zone between the thermal insulation module and the heat absorption tube, but also protect the heat absorption tube from being scratched by the connecting bolts.

[0078] In order to avoid light leakage and achieve a better thermal insulation effect, adjacent two thermal insulation modules in the height direction are assembled with staggered joints, as Figure 5 shown. When installing the thermal insulation module, the gap between the modules needs to be filled with 5 mm of magnesium silicate fiber blanket. It can be first bonded to the module and then installed in place, or it can be filled with loose cotton and then coated with high-temperature adhesive to ensure that there is no gap between the modules.

[0079] When installing the thermal insulation module, follow the principle from the lower header to the upper header and fill them in sequence. When replacing, first cut off the frame 23 and then take out the thermal insulation material. Replace the thermal insulation board according to the size, or castable can be used.

Claims

1. A heat absorber tube panel insulation module, characterized in that: The thermal insulation module is installed on the backlight side of the absorber tube panel, and the thermal insulation module is in close contact with the absorber tube panel. The thermal insulation module comprises a support frame (2) and a thermal insulation component (1) installed on the support frame (2). The thermal insulation component (1) comprises a plurality of thermal insulation units arranged on the support frame (2) along the width direction of the absorber tube panel.

2. The absorber tube panel insulation module according to claim 1, characterized in that: Each of the thermal insulation units adopts a "soft-hard combination" mode that combines soft thermal insulation materials and hard thermal insulation materials.

3. The absorber tube panel insulation module according to claim 2, characterized in that: The support frame (2) comprises a frame (23), a plurality of connecting members arranged on the frame (23), and a connecting bolt assembly (21) for locking the heat preservation unit on the corresponding connecting members.

4. The absorber tube panel insulation module according to claim 3, characterized in that: The size of the frame (23) is compatible with the size of the heat preservation module, and the frame (23) is a rectangular frame formed by welding a plurality of rectangular tubes.

5. The absorber tube panel insulation module according to claim 3, characterized in that: The connecting piece is an L-shaped connecting piece (22), one side of the L-shaped connecting piece (22) is welded to the frame (23), and the other side of the L-shaped connecting piece (22) is provided with a waist-shaped hole, and the connecting bolt assembly (21) cooperates with the corresponding waist-shaped hole.

6. The absorber tube panel insulation module according to claim 3, characterized in that: The connecting bolt assembly (21) comprises a screw rod (213), an end plate (214) welded to one end of the screw rod (213), and a locking assembly arranged at the other end of the screw rod (213), wherein the locking assembly comprises a nut (211) and a gasket (212).

7. The absorber tube panel insulation module according to claim 6, characterized in that: The length of the screw rod (213) is greater than the thickness of the heat preservation unit, the end plate (214) is a steel plate with a diameter of 50 mm, and the screw rod (213) is welded on the center of the end plate.

8. The absorber tube panel insulation module according to claim 6, characterized in that: Each of the thermal insulation units comprises a soft thermal insulation layer (11), a stainless steel foil (12), a first hard thermal insulation layer (13), a second hard thermal insulation layer (14), and a metal guard plate (15) which are arranged in sequence; the soft thermal insulation layer (11) is in contact with the absorber tube panel; the end plate is located on a side of the soft thermal insulation layer (11) close to the absorber tube panel; and the nut (211) and the gasket (212) are located on one side of the metal guard plate (15).

9. The absorber tube panel insulation module according to claim 8, characterized in that: The material of the first hard thermal insulation layer (13) is one of a calcium silicate board, a ceramic fiber board or a nano-microporous thermal insulation board; The material of the second hard thermal insulation layer (14) is one of a calcium silicate board, a ceramic fiber board or a nano-microporous thermal insulation board.

10. The absorber tube panel insulation module according to claim 8, characterized in that: The soft thermal insulation layer (11) is a magnesium silicate fiber blanket.

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