A photothermal heat absorber

Abstract

The utility model discloses a kind of light-heat heat absorbers, including the heat absorber body of cylindrical structure, heat absorber body is formed by a plurality of heat absorption modules splicing;One side of heat absorption module is provided with mounting sliding slot, the other side of heat absorption module is equipped with the sliding block compatible with mounting sliding slot;Two heat absorption modules adjacent left and right are connected by the cooperation of sliding block and mounting sliding slot;The inside of heat absorption module is equipped with medium passage, medium passage is parallelly arranged with mounting sliding slot;One side of heat absorption module is equipped with the connecting pipe communicated with medium passage;Two heat absorption modules adjacent upper and lower are connected by being inserted in medium passage by connecting pipe, connecting pipe and the inner wall of medium passage are sealingly connected;Heat absorption module on both ends of heat absorber body is equipped with header tank, header tank is communicated with medium passage, and sealingly connected between two adjacent header tanks.The utility model is simple and convenient to install, and heat absorption module is small in size, not easy to be damaged in production and hoisting process.

Description

Technical Field

[0001] This utility model relates to the field of heat absorber technology, specifically to a photothermal heat absorber. Background Technology

[0002] Tower-type concentrated solar power (CSP) is a technology that uses heliostats to reflect sunlight to a central receiver, which then drives a generator unit using the heat energy. Its core advantages lie in its high temperature, high energy density, and scalable thermal storage, making it suitable as a baseload or peak-shaving power source for the grid. The receiver, as the core component of the system, plays a crucial role in converting high-density solar energy into thermal energy. Traditional tower-type CSP receivers are mostly made of nickel-based alloys or stainless steel. Their structure typically consists of small-diameter absorber tubes tightly arranged in a tube panel, with manifolds at the top and bottom. Due to the relatively long total length of each absorber tube, deformation is easily caused during production and transportation, and dents are easily formed by impacts. Therefore, designing a CSP receiver that is easy to transport and install is essential. Utility Model Content

[0003] The purpose of this invention is to provide a photothermal absorber to address the shortcomings of existing technologies.

[0004] This utility model provides a photothermal absorber, including an absorber body, which is a cylindrical structure with openings at both ends, and is formed by splicing together multiple heat-absorbing modules;

[0005] One side of the heat absorption module has an installation groove, and the other side of the heat absorption module has a slider that matches the installation groove. Two adjacent heat absorption modules are connected to each other through the slider and the installation groove. The heat absorption module has a medium channel inside, which is parallel to the installation groove. One side of the heat absorption module has a connecting pipe that communicates with the medium channel. Two adjacent heat absorption modules are connected by inserting the connecting pipe into the medium channel, and the connecting pipe is sealed to the inner wall of the medium channel.

[0006] The heat absorption modules located at both ends of the heat absorber body are provided with collection boxes.

[0007] In the photothermal absorber described above, preferably, the heat absorption module has an installation positioning hole on the side of the heat absorption module away from the connecting pipe, and the other side of the heat absorption module has an installation plate adapted to the installation positioning hole.

[0008] In the photothermal absorber described above, preferably, the heat absorption module is further provided with a first fixing hole, which communicates with the mounting positioning hole; the mounting plate is provided with a second fixing hole; when the mounting plate is engaged with the mounting positioning hole, the first fixing hole and the second fixing hole are aligned, and the first fixing hole and the second fixing hole are connected by a fixing rod.

[0009] In the photothermal absorber described above, preferably, there are multiple medium channels arranged side by side.

[0010] In the photothermal absorber described above, preferably, the mounting groove is a T-shaped groove.

[0011] In the photothermal absorber described above, preferably, the heat-absorbing module is made of carbon fiber reinforced graphite composite material.

[0012] In the photothermal absorber described above, preferably, a medium inlet is provided on a header at one end of the absorber body, and a medium outlet is provided on a header at the other end of the absorber body.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model uses multiple heat-absorbing modules to form a cylindrical heat absorber body. The left and right adjacent heat-absorbing modules are connected by a slider and an installation groove, and the upper and lower adjacent heat-absorbing modules are connected by a connecting pipe. The installation process is simple and convenient, and the heat-absorbing modules are small in size and are not easily damaged during production and hoisting. Attached Figure Description

[0015] Figure 1 This is an isometric view of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the heat absorption module;

[0017] Figure 3 yes Figure 2 The main view;

[0018] Figure 4 This is a structural diagram of the assembly of adjacent heat-absorbing modules.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1-Heat absorption module, 2-Mounting slide, 3-Slider, 4-Medium channel, 5-Connecting pipe, 6-Junction box, 7-Mounting positioning hole, 8-Mounting plate, 9-First fixing hole, 10-Second fixing hole, 11-Fixing rod. Detailed Implementation

[0021] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] Embodiment 1 of this utility model: as follows Figures 1-4 As shown, a photothermal absorber includes an absorber body, which is a cylindrical structure with openings at both ends. The absorber body is formed by splicing multiple absorber modules 1. One side of the absorber module 1 is provided with an installation groove 2, and the other side of the absorber module 1 is provided with a slider 3 that is adapted to the installation groove 2. Two adjacent absorber modules 1 are connected to each other through the slider 3 and the installation groove 2. That is, the slider 3 of one of the two adjacent absorber modules 1 is assembled with the installation groove 2 of the other absorber module 1. The mounting groove 2 is a through groove, specifically a T-shaped groove. The slider 3 is a T-shaped block that fits into it, facilitating assembly between the slider 3 and the mounting groove 2. The slider 3 can be a molybdenum-rhenium alloy block. The heat-absorbing module 1 has an internal medium channel 4, which is parallel to the mounting groove 2, meaning it runs along the length of the mounting groove 2. One side of the heat-absorbing module 1 has a connecting pipe 5 that communicates with the medium channel 4. Specifically, one end of the connecting pipe 5 is fixedly connected to the heat-absorbing module 1, and the connecting pipe 5 is concentric with the medium channel 4. Two adjacent heat-absorbing modules 1 are connected by the connecting pipe 5 inserted into the medium channel 4, with the connecting pipe 5 sealingly connected to the inner wall of the medium channel 4. "Adjacent" refers to two heat-absorbing modules 1 that are vertically opposite and adjacent to each other, where the connecting pipe 5 of one heat-absorbing module 1 is inserted into the medium channel 4 of the other heat-absorbing module 1. Figure 4 As shown.

[0023] Each heat-absorbing module 1 located at both ends of the absorber body is equipped with a header 6, meaning that each heat-absorbing module 1 at both ends of the absorber body has a header 6 installed, and the header 6 is connected to the medium channel 4. The header 6 at one end of the absorber body has a medium inlet, and the header 6 at the other end of the absorber body has a medium outlet. In practice, the headers 6 at the same end of the absorber body can be connected by pipes or not. When the headers 6 at the same end of the absorber body are connected by pipes, the headers 6 with medium inlets are connected by pipes, and the headers 6 with medium outlets are connected by pipes. Of course, in practice, only a few headers 6 at the same end of the absorber body can be connected as needed. When the headers 6 at the same end of the absorber body are not connected by pipes, the medium inlet on the header 6 can be directly connected to the medium supply source through a pipe, and the medium outlet on the header 6 can be directly connected to the medium collection tank through a pipe.

[0024] The heat absorption module 1 of this application is small in size and not easily damaged during production and hoisting, and its modular assembly and installation are convenient.

[0025] To further improve the connection strength between the upper and lower heat absorption modules 1 and reduce the lateral shear force of the connecting pipe 5, the following measures are adopted:

[0026] The heat absorption module 1 has mounting holes 7, which are located on the side of the heat absorption module 1 away from the connecting pipe 5 and avoid the medium channel 4. A mounting plate 8, compatible with the mounting holes 7, is fixedly mounted on the other side of the heat absorption module 1. Alternatively, multiple medium channels 4 can be arranged side-by-side, with the distance between them adjustable as needed. The diameter of the medium channels 4 is 0.5-2 mm, and the mounting holes 7 are located on one side of the arranged medium channels 4.

[0027] The heat absorption module 1 is also provided with a first fixing hole 9, which communicates with the mounting positioning hole 7 and avoids the medium channel 4; the mounting plate 8 is provided with a second fixing hole 10; when the mounting plate 8 is engaged with the mounting positioning hole 7, the first fixing hole 9 and the second fixing hole 10 are aligned, and the first fixing hole 9 and the second fixing hole 10 are connected by a fixing rod 11. The fixing rod 11 passing through the first fixing hole 9 and the second fixing hole 10 can limit the mounting plate 8, prevent the mounting plate 8 from moving, and improve the connection strength of the entire structure.

[0028] Furthermore, the heat-absorbing module 1 is made of carbon fiber reinforced graphite composite material. The strength of the graphite is improved through carbon fiber reinforcement technology and isostatic pressing. Graphite's thermal conductivity (approximately 150 W / m·K) is significantly higher than that of stainless steel (approximately 15 W / m·K), enabling rapid heat absorption and uniform heat dissipation, reducing the risk of localized overheating. Its high specific heat capacity (approximately 700 J / kg·K) enhances its heat storage capacity, making it suitable for use with molten salt or solid particulate media. Graphite has a low coefficient of thermal expansion (~4.5 × 10⁻⁻⁻⁴). 6 The graphite material has a high thermal conductivity, allowing it to withstand drastic temperature fluctuations (such as day-night cycles or sudden changes in radiation caused by cloud cover), reducing the risk of thermal stress cracking. Because graphite has a high thermal conductivity, for system control, it is only necessary to ensure that the maximum temperature of the absorber surface does not exceed the limit; there is no need to consider the issue of uneven temperature distribution on the absorber screen.

[0029] The basic principles of this utility model have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this utility model are merely examples and not limitations, and should not be considered as essential features of each embodiment of this utility model. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the utility model from being implemented using the aforementioned specific details.

[0030] The block diagrams of the devices, apparatuses, equipment, and systems involved in this utility model are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0031] Additionally, as used herein, the "or" used in a list of items beginning with "at least one" indicates a separate list, such that a list of, for example, "at least one of A, B, or C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word "exemplary" does not imply that the described example is preferred or better than other examples.

[0032] It should also be noted that in the system and method of this utility model, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this utility model.

[0033] Various changes, substitutions, and modifications can be made to the technology described herein without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of this utility model is not limited to the specific aspects of the processes, machines, manufacturing processes, events, means, methods, and actions described above. Currently existing or later-developed processes, machines, manufacturing processes, events, means, methods, or actions that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein can be utilized. Therefore, the appended claims include such processes, machines, manufacturing processes, events, means, methods, or actions within their scope.

[0034] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features disclosed herein.

[0035] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present invention to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

Claims

1. A photothermal absorber, characterized in that: Includes a heat absorber body, which is a cylindrical structure with openings at both ends, and is formed by splicing together multiple heat-absorbing modules (1); The heat absorption module (1) has an installation groove (2) on one side and a slider (3) adapted to the installation groove (2) on the other side. The two adjacent heat absorption modules (1) are connected to each other by the slider (3) and the installation groove (2). The heat absorption module (1) has a medium channel (4) inside, which is parallel to the installation groove (2). The heat absorption module (1) has a connecting pipe (5) communicating with the medium channel (4) on one side. The two adjacent heat absorption modules (1) are connected by the connecting pipe (5) inserted into the medium channel (4). The connecting pipe (5) is sealed to the inner wall of the medium channel (4). The heat absorption module (1) located at both ends of the heat absorber body is provided with a header (6), and the header (6) is connected to the medium channel (4).

2. The photothermal absorber according to claim 1, characterized in that: The heat absorption module (1) is provided with an installation positioning hole (7), which is located on the side of the heat absorption module (1) away from the connecting pipe (5). The other side of the heat absorption module (1) is provided with an installation plate (8) that is compatible with the installation positioning hole (7).

3. The photothermal absorber according to claim 2, characterized in that: The heat absorption module (1) is also provided with a first fixing hole (9), which is connected to the mounting positioning hole (7); the mounting plate (8) is provided with a second fixing hole (10); when the mounting plate (8) is engaged with the mounting positioning hole (7), the first fixing hole (9) and the second fixing hole (10) are directly opposite each other, and the first fixing hole (9) and the second fixing hole (10) are connected by a fixing rod (11).

4. The photothermal absorber according to claim 1, characterized in that: There are multiple media channels (4), and the multiple media channels (4) are arranged side by side.

5. The photothermal absorber according to claim 1, characterized in that: The mounting groove (2) is a T-shaped groove.

6. The photothermal absorber according to claim 1, characterized in that: The heat-absorbing module (1) is made of carbon fiber reinforced graphite composite material.

7. The photothermal absorber according to claim 1, characterized in that: A medium inlet is provided on the header (6) located at one end of the heat absorber body, and a medium outlet is provided on the header (6) located at the other end of the heat absorber body.

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