Conveying device, cooling conveyor and photovoltaic preparation system

Abstract

The utility model relates to a conveying device, a cooling conveyor and a photovoltaic preparation system. The conveying device comprises a supporting frame and a rolling piece, the rolling piece is connected to the supporting frame and rotates around the axis of the rolling piece, a containing cavity extending in the axis direction is formed in the rolling piece, a cooling opening communicated with the containing cavity is formed in the surface of the rolling piece, and a cooling medium is introduced into the containing cavity. And the conveying device is used for receiving the photovoltaic module discharged from the laminating machine, conveying the photovoltaic module to the next working equipment and cooling the photovoltaic module in the conveying process. The cooling medium is introduced into the accommodating cavity of the rolling element of the conveying device, and the cooling medium in the accommodating cavity can be uniformly distributed on the whole rolling element and flows out from the cooling opening in the surface of the rolling element in the rotating process of the rolling element, so that the photovoltaic module placed on the surface of the rolling element can be cooled. And the cooling medium acts on the conveyed photovoltaic module in a close distance, so that the temperature of the photovoltaic module can be reduced in a relatively short time.

Description

Technical Field

[0001] This application relates to the field of photovoltaic equipment, and in particular to a conveying device, a cooling conveyor, and a photovoltaic preparation system. Background Technology

[0002] In the production of solar photovoltaic modules, the modules need to be laminated using a laminator. During the lamination process, the filler material needs to be melted under certain pressure and temperature conditions. This results in the photovoltaic modules carrying a large amount of heat when they exit the laminator. The high temperature of the photovoltaic modules when they exit the laminator can affect subsequent processing steps, necessitating cooling treatment. Utility Model Content

[0003] Therefore, it is necessary to provide a conveying device, a cooling conveyor, and a photovoltaic preparation system to address the issue that the temperature of the photovoltaic modules after lamination is high and cooling treatment is required.

[0004] In a first aspect, a conveying device includes:

[0005] Support frame;

[0006] A rolling element is connected to the support frame and rotates about its own axis. The rolling element has a receiving cavity extending along the axis, and a cooling port communicating with the receiving cavity is provided on the surface of the rolling element. The receiving cavity is used to introduce a cooling medium.

[0007] In one embodiment, the conveying device further includes a driver, the body of which is connected to the support frame, and the output end of which is driven to the rolling element.

[0008] In one embodiment, the conveying device further includes a transmission assembly connected to the output of the driver and simultaneously driven to the rolling element.

[0009] In a second aspect, a cooling conveyor includes a refrigeration device and a conveying device as described in the first aspect, the refrigeration device being used to generate a cooling medium, the refrigeration device being connected to a pipe assembly rotatably connected to the rolling element, the pipe assembly being connected to the receiving cavity of the rolling element.

[0010] In one embodiment, the pipeline assembly includes a plurality of delivery pipes, and the rolling elements include a plurality of rolling elements, each of which is rotatably connected to a corresponding delivery pipe.

[0011] In one embodiment, the cooling conveyor further includes a rotary joint, one end of which is rotatably connected to the pipe assembly, and the other end of which is fixedly connected to the rolling element.

[0012] In one embodiment, the piping assembly includes multiple delivery pipes, the refrigeration device includes a water chiller and a distribution box, the water chiller is used to generate the cooling medium, the distribution box includes a distribution inlet and multiple distribution outlets, the distribution inlet is connected to the output end of the water chiller, and each of the distribution outlets is connected to the corresponding delivery pipe.

[0013] In one embodiment, the piping assembly includes a delivery pipe, a connector, and a connecting flange. The delivery pipe is in communication with the refrigeration device. One end of the connector is fitted around the outer periphery of the delivery pipe, and the other end of the connector is rotatably connected to the rolling element. The connecting flange is fitted around the outer periphery of the connector, and the connector is connected to the support frame by fasteners passing through the connecting flange.

[0014] In one embodiment, the pipe assembly further includes a floating seal and an elastic element disposed within the connector. Along a first direction, the end wall of the floating seal abuts against the rolling element, and the outer wall of the floating seal is attached to the inner wall of the connector. One end of the elastic element abuts against the side of the floating seal opposite to the rolling element, and the other end of the elastic element abuts against the side wall of the connector. The delivery pipe is connected to one end of the connector along a second direction, where the first direction is the direction in which the rolling element extends, and the first direction intersects the second direction.

[0015] Thirdly, a photovoltaic fabrication system, the photovoltaic fabrication system comprising the cooling conveyor as described in the second aspect.

[0016] The aforementioned conveying device is used to receive photovoltaic modules exiting the laminator. The conveying device transports the photovoltaic modules to the next working device and cools them during transport. Specifically, a cooling medium is introduced into the receiving cavity of the rolling element of the conveying device. During the rotation of the rolling element, the cooling medium in the receiving cavity is evenly distributed across the entire rolling element and flows out from cooling ports on the surface of the rolling element, thereby cooling the photovoltaic modules placed on the surface of the rolling element. Because the cooling medium interacts closely with the conveyed photovoltaic modules, the cooling speed is fast, reducing the temperature of the photovoltaic modules in a short time, thus improving cooling efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a cooling conveyor provided in an embodiment of this application, viewed from one perspective.

[0019] Figure 2 This is a structural schematic diagram of a cooling conveyor provided in an embodiment of this application from another perspective.

[0020] Figure 3 This is a side view of a cooling conveyor provided in an embodiment of this application.

[0021] Figure 4 for Figure 3 A magnified diagram of point R in the middle.

[0022] Explanation of reference numerals in the attached drawings: 100, cooling conveyor; 10, conveying device; 1, support frame; 11, mounting hole; 12, bearing; 13, fixed seat; 2, rolling element; 201, cooling port; 3, driver; 4, transmission assembly; 41, synchronous pulley; 42, synchronous belt; 5, anti-slip element; 20, refrigeration device; 21, water chiller; 22, distribution box; 221, distribution outlet; 31, conveying pipe; 32, connector; 33, connecting flange; 34, fastener; 35, floating seal; 36, elastic element; 40, rotary joint; 401, first thread structure; 402, rolling bearing. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] The manufacturing process of photovoltaic modules requires module stacking and lamination. The module stacking process involves: after the solar cells are connected in series and pass inspection, they are laid out in layers with the glass cover, filler material, and backsheet, ready for lamination. The layers, from bottom to top, are: glass cover, filler material, solar cell strings, filler material, and backsheet. The module lamination process involves: placing the stacked modules into a laminator, removing the air from the modules, heating the modules to melt the filler material, and bonding the solar cell strings, glass cover, and backsheet together.

[0025] During the lamination process, the filler melts under certain pressure and temperature conditions, resulting in the photovoltaic module carrying a large amount of heat when it exits the laminator. The photovoltaic module is at a high temperature when it exits the laminator, which will affect subsequent processing steps, so the photovoltaic module needs to be cooled down.

[0026] To achieve cooling after lamination of photovoltaic modules, firstly, please refer to... Figure 1 This application provides a conveying device 10. The conveying device 10 includes a support frame 1 and a rolling element 2. The rolling element 2 is connected to the support frame 1 and rotates around its own axis. The rolling element 2 has a receiving cavity extending along its axis, and a cooling port 201 communicating with the receiving cavity is provided on its surface. A cooling medium is introduced into the receiving cavity. The conveying device 10 can be used to receive photovoltaic modules exiting from a laminator. The conveying device 10 can transport the photovoltaic modules from the laminator to the next working device and cool them during transport. Specifically, a cooling medium is introduced into the receiving cavity of the rolling element 2 of the conveying device 10. During the rotation of the rolling element 2, the cooling medium in the receiving cavity can be evenly distributed throughout the rolling element 2 and flows out from the cooling port 201 on the surface of the rolling element 2, thereby cooling the photovoltaic modules placed on the surface of the rolling element 2. Because the cooling medium interacts closely with the transported photovoltaic modules, the cooling speed is fast, and the temperature of the photovoltaic modules can be reduced in a short time, thereby improving cooling efficiency.

[0027] In an optional implementation, the rolling element 2 can be driven to rotate by an internal power source, or it can be driven to rotate by an external power source. When the rolling element 2 is driven to rotate by an internal power source, it is an electric roller, meaning that the rolling element 2 itself has a power unit inside. Electric rollers are commercially available and will not be described in detail here. When the rolling element 2 is driven to rotate by an external power source, it can be driven manually or by setting a driver 3 to achieve automated driving.

[0028] Please see Figure 1In some embodiments, the conveying device 10 further includes a driver 3, the main body of which is connected to the support frame 1, and the output end of the driver 3 is drivenly connected to the rolling element 2. The driver 3 enables automated control of the conveying device 10 and improves transmission efficiency. For example, the driver 3 may be a rotary motor or a rotary electric motor, etc.

[0029] In an optional implementation, the output of driver 3 can be directly connected to the rolling element 2. Alternatively, the output of driver 3 can be indirectly connected to the rolling element 2 via transmission assembly 4. Please refer to [link to relevant documentation]. Figure 1 In some embodiments, the conveying device 10 further includes a transmission assembly 4, which is connected to the output end of the driver 3 and is also connected to the rolling element 2. Different transmission ratios of the transmission assembly 4 can be selected to adjust the rotational speed of the rolling element 2 to meet different conveying speed requirements. For example, when a lower conveying speed is required, a transmission assembly 4 with a larger transmission ratio can be selected to reduce the rotational speed of the rolling element 2; conversely, when a higher conveying speed is required, a transmission assembly 4 with a smaller transmission ratio can be selected to increase the rotational speed of the rolling element 2. The transmission assembly 4 can also change the torque. The output torque of the driver 3 may not directly meet the working requirements of the rolling element 2; the torque can be increased or decreased through the transmission assembly 4 to adapt to different load conditions. For example, when conveying heavy photovoltaic modules, the torque can be increased through the transmission assembly 4 to ensure that the rolling element 2 can smoothly drive the load. Furthermore, the transmission assembly 4 allows for more flexible spatial installation of the driver 3 and the rolling element 2. For example, when the installation position of the driver 3 is limited, power can be transmitted to the rolling element 2 at a more distant location through the transmission assembly 4 to meet different installation layout requirements.

[0030] In optional embodiments, the transmission component 4 may be a sprocket and chain assembly or a synchronous belt and pulley assembly, etc. This application does not limit the specific structure of the transmission component 4; any transmission component 4 capable of transmitting the rotational motion of the output end of the driver 3 to the rolling element 2 is within the protection scope of this application.

[0031] For details, please refer to Figure 2 In some embodiments, the rolling element 2 includes multiple components, and the support frame 1 is provided with multiple mounting holes 11. Each end of the rolling element 2 is respectively provided with a corresponding mounting hole 11. Each rolling element 2 is connected by a bearing 12 (see [reference]). Figure 4 It is rotatably connected to support frame 1. Please refer to [link / reference]. Figure 1One end of the rolling element 2 located outside the mounting hole 11 is fixedly connected to the corresponding synchronous pulley 41, and the synchronous belt 42 simultaneously winds around all the synchronous pulleys 41. The output end of the driver 3 is connected to a rolling element 2 on the same synchronous pulley 41. The driver 3 drives the synchronous pulley 41 to rotate, which in turn drives the synchronous belt 42 to drive all the synchronous pulleys 41 to rotate, thereby driving all the rolling elements 2 to rotate. Furthermore, the main body of the driver 3 can be mounted by setting a fixing seat 13 on the support frame 1.

[0032] In the optional method, please refer to Figure 1 The rolling element 2 is equipped with an anti-slip element 5, which can be a rubber ring or a rubber strip. The anti-slip element 5 can increase the friction between the photovoltaic module and the rolling element 2, thereby improving the conveying stability. There can be one or more anti-slip elements 5. Taking a rubber ring as an example, multiple rubber rings can be spaced apart along the extension direction of the rolling element 2.

[0033] In the optional method, please refer to Figure 1 The cooling vents 201 may include one or more. Preferably, there are multiple cooling vents 201, which are equidistantly distributed on the outer peripheral surface of the rolling element 2. Providing multiple cooling vents 201 can increase the cooling area and improve the cooling efficiency.

[0034] In an optional configuration, the cooling medium is either cold air or cooling mist.

[0035] Secondly, please refer to Figure 1 This application also provides a cooling conveyor 100. The cooling conveyor 100 includes a refrigeration device 20 and a conveying device 10 as described in the first aspect. The refrigeration device 20 generates a cooling medium and is connected to a pipe assembly (not shown in the figure). The pipe assembly is rotatably connected to a rolling element 2, and the pipe assembly communicates with the receiving cavity of the rolling element 2. After generating the cooling medium, the refrigeration device 20 transmits the cooling medium to the rolling element 2 through the pipe assembly. Because the pipe assembly is rotatably connected to the rolling element 2, interference with the rotation of the rolling element 2 itself can be avoided, thereby ensuring that the conveying device 10 normally conveys the photovoltaic modules.

[0036] Please see Figure 1 and Figure 3 In some embodiments, the refrigeration device 20 includes a water chiller 21, a distribution box 22, and a piping assembly. The piping assembly includes a plurality of delivery pipes 31.

[0037] Please see Figure 1In some embodiments, the water chiller 21 is used to generate the cooling medium, and the distribution box 22 includes a distribution inlet and multiple distribution outlets 221. The distribution inlet is connected to the output end of the water chiller 21, and each distribution outlet 221 is connected to a corresponding delivery pipe 31. By setting the distribution box 22, the cooling medium can be distributed evenly into each delivery pipe 31. The number of distribution outlets 221 can be one, two, three, four, five, or six, etc. Correspondingly, the number of delivery pipes 31 can be one, two, three, four, five, or six, etc. It should be noted that both the water chiller 21 and the distribution box 22 are commercially available and belong to the prior art. The specific structure of the water chiller 21 and the distribution box 22 will not be described in detail here.

[0038] In an optional embodiment, the delivery pipe 31 is rotatably connected to only a portion of the rolling elements 2. In other words, the delivery pipe 31 only supplies cooling medium to a portion of the rolling elements 2, while the other portion of the rolling elements 2 does not receive cooling medium. Alternatively, the delivery pipe 31 is rotatably connected to all of the rolling elements 2. See also... Figure 1 In some embodiments, the piping assembly includes multiple delivery pipes 31, and multiple rolling elements 2, each of which is rotatably connected to a corresponding delivery pipe 31. This allows the delivery pipes 31 to supply cooling medium into each rolling element 2, increasing the cooling area and improving cooling efficiency.

[0039] This application embodiment does not limit the position where the delivery pipe 31 is connected to the rolling element 2. Each rolling element 2 includes a first end and a second end along its own length. Please refer to... Figure 1 In an optional embodiment, the first end of each rolling element 2 is rotatably connected to the corresponding conveying pipe 31. Alternatively, the first end of some rolling elements 2 is rotatably connected to the corresponding conveying pipe 31, and the second end of another portion of rolling elements 2 is rotatably connected to the corresponding conveying pipe 31. In other words, the conveying pipe 31 is not located on the same side of the rolling elements 2. The former is preferred, as it allows for a more uniform installation position of the conveying pipe 31.

[0040] Please see Figure 3 and Figure 4 In some embodiments, the pipe assembly further includes a connector 32, one end of which is sleeved on the conveying pipe 31, and the other end of which is rotatably connected to the rolling element 2. By adding the connector 32, the connection area between the conveying pipe 31 and the rolling element 2 can be increased, thereby improving the connection stability between the conveying pipe 31 and the rolling element 2.

[0041] Please see Figure 4 In an optional embodiment, the end of the rolling element 2 protrudes through the mounting hole 11 of the support frame 1 and is located outside the support frame 1. The connector 32 is rotatably connected to the end of the rolling element 2 located outside the support frame 1. Alternatively, please refer to... Figure 4 The end of the rolling element 2 is located within the mounting hole 11 of the support frame 1, and the connector 32 extends at least partially into the mounting hole 11 to be rotatably connected to the end of the rolling element 2. Preferably, the latter can increase the connection area between the connector 32 and the support frame 1, so that the support frame 1 provides a certain support for the connector 32 and improves the stability of the connection.

[0042] Please see Figure 4 To further improve the connection stability between the connector 32 and the support frame 1, in some embodiments, the pipe assembly also includes a connecting flange 33. The connecting flange 33 is fitted around the outer periphery of the connector 32, and the connector 32 is connected to the support frame 1 by fasteners 34 passing through the connecting flange 33. The connecting flange 33 abuts against the side of the support frame 1, and the fasteners 34 fix the connecting flange 33 to the side of the support frame 1, thereby ensuring a stable connection between the connector 32 and the support frame 1.

[0043] Please see Figure 4 In some embodiments, the cooling conveyor 100 further includes a rotary joint 40, one end of which is rotatably connected to the pipe assembly, and the other end of which is fixedly connected to the rolling element 2. The rotary joint 40 allows the rolling element 2 to rotate relative to the pipe assembly without causing the pipe assembly to become coiled.

[0044] Please see Figure 4 Specifically, the rotary joint 40 has a first threaded structure 401 on one end near the rolling element 2, and a second threaded structure on one end of the rolling element 2. The first threaded structure 401 and the second threaded structure are threadedly connected to each other, so that the rolling element 2 is fixedly sleeved on the end of the rotary joint 40. The rotary joint 40 also includes a rolling bearing 402, one end of which is rotatably connected to the inner wall of the connector 32. This allows the rolling element 2 to rotate relative to the connector 32. The rolling bearing 402 can be a ball bearing or a roller bearing, etc.

[0045] Please see Figure 4 In some embodiments, the pipe assembly further includes a floating seal 35 and an elastic element 36, which are disposed within the connector 32 and extend along a first direction (e.g., Figure 4 (As shown in direction AA), the end wall of the floating seal 35 abuts against the rolling element 2, the outer wall of the floating seal 35 is attached to the inner wall of the connector 32, one end of the elastic element 36 abuts against the side of the floating seal 35 away from the rolling element 2, and the other end of the elastic element 36 abuts against the side wall of the connector 32; the conveying pipe 31 is connected to the connector 32 along the second direction (as shown in direction AA). Figure 4As shown in the BB direction, one end of the first direction is the direction in which the rolling element 2 extends, and the first direction intersects with the second direction. The floating seal 35 seals the gap between the rolling element 2 and the connector 32, thereby preventing the cooling medium from escaping from the gap. The elastic element 36 applies a continuous elastic force to the floating seal 35, ensuring that the floating seal 35 always tightly abuts against the inner walls of the rolling element 2 and the connector 32. Even during operation of the cooling conveyor 100, when vibrations or pressure changes occur, the elastic element 36 ensures that the floating seal 35 maintains sufficient sealing pressure.

[0046] For example, the elastic element 36 is a spring, torsion spring, or sheet spring, etc.

[0047] Furthermore, in some embodiments, along the first direction (e.g.) Figure 4 In the direction shown (AA direction), the end wall of the floating seal 35 abuts against the side of the rotary joint 40 where the rolling bearing 402 is located.

[0048] Thirdly, embodiments of this application also provide a photovoltaic fabrication system, which includes the cooling conveyor 100 as described in the second aspect. The photovoltaic fabrication system may also include other photovoltaic processing equipment such as a laminator. Taking a laminator as an example, the cooling conveyor 100 is used to receive photovoltaic modules exiting the laminator and to cool the photovoltaic modules.

[0049] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A conveying device (10), characterized in that, include: Support frame (1); A rolling element (2) is connected to the support frame (1) and rotates around its own axis. The rolling element (2) has a receiving cavity extending along the axis, and a cooling port (201) communicating with the receiving cavity is provided on the surface of the rolling element (2). The receiving cavity is used to introduce a cooling medium.

2. The conveying device (10) according to claim 1, characterized in that, The conveying device (10) also includes a driver (3), the main body of which is connected to the support frame (1), and the output end of which is connected to the rolling element (2).

3. The conveying device (10) according to claim 2, characterized in that, The conveying device (10) further includes a transmission assembly (4), which is connected to the output end of the driver (3) and is also connected to the rolling element (2).

4. A cooling conveyor (100), characterized in that, The cooling conveyor (100) includes a refrigeration device (20) and a conveying device (10) as described in any one of claims 1 to 3, the refrigeration device (20) being used to generate a cooling medium, the refrigeration device (20) being connected to a pipe assembly rotatably connected to the rolling element (2), the pipe assembly being connected to the receiving cavity of the rolling element (2).

5. The cooling conveyor (100) according to claim 4, characterized in that, The pipeline assembly includes multiple delivery pipes (31), and the rolling element (2) includes multiple rolling elements (2), each of which is rotatably connected to the corresponding delivery pipe (31).

6. The cooling conveyor (100) according to claim 4, characterized in that, The cooling conveyor (100) also includes a rotary joint (40), one end of which is rotatably connected to the pipe assembly, and the other end of which is fixedly connected to the rolling element (2).

7. The cooling conveyor (100) according to claim 4, characterized in that, The piping assembly includes multiple delivery pipes (31), and the refrigeration device (20) includes a water chiller (21) and a distribution box (22). The water chiller (21) is used to generate the cooling medium, and the distribution box (22) includes a distribution inlet and multiple distribution outlets (221). The distribution inlet is connected to the output end of the water chiller (21), and each distribution outlet (221) is connected to the corresponding delivery pipe (31).

8. The cooling conveyor (100) according to claim 4, characterized in that, The piping assembly includes a delivery pipe (31), a connector (32), and a connecting flange (33). The delivery pipe (31) is connected to the refrigeration device (20). One end of the connector (32) is fitted onto the outer periphery of the delivery pipe (31), and the other end of the connector (32) is rotatably connected to the rolling element (2). The connecting flange (33) is fitted onto the outer periphery of the connector (32), and the connector (32) is connected to the support frame (1) by fasteners (34) passing through the connecting flange (33).

9. The cooling conveyor (100) according to claim 8, characterized in that, The pipe assembly further includes a floating seal (35) and an elastic element (36), the floating seal (35) and the elastic element (36) being disposed inside the connector (32). Along a first direction, the end wall of the floating seal (35) abuts against the rolling element (2), the outer wall of the floating seal (35) is attached to the inner wall of the connector (32), one end of the elastic element (36) abuts against the side of the floating seal (35) away from the rolling element (2), and the other end of the elastic element (36) abuts against the side wall of the connector (32). The delivery pipe (31) is connected to one end of the connector (32) along a second direction, the first direction being the direction in which the rolling element (2) extends, and the first direction intersects with the second direction.

10. A photovoltaic fabrication system, characterized in that, The photovoltaic fabrication system includes a cooling conveyor (100) as described in any one of claims 4 to 9.

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