Photovoltaic cell wet tank device
Patent Information
- Application Number
- CN202522057938.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-24
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-24
AI Technical Summary
The high energy consumption of the hot water machine in existing wet trough photovoltaic cell equipment leads to a decrease in equipment capacity and utilization rate, and the energy consumption is relatively large in the initial liquid preparation and replenishment stages.
A heat exchange device is adopted, which uses heat exchange pipe assembly installed on the outer wall of the drying tank to exchange heat between the heat exchange medium heated by the hot water machine and the outer wall of the drying tank. After preheating, it can be directly used for liquid preparation and replenishment, reducing the heating load of the hot water machine.
It reduces the energy consumption of the water heater, improves heat exchange efficiency, saves costs, and increases equipment capacity and utilization rate.
Smart Images
Figure CN224936027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic cell production equipment, and in particular to a heat exchange device and a wet trough-type equipment for photovoltaic cells. Background Technology
[0002] Currently, in wet trough-type equipment for photovoltaic cells, the hot water used in the cleaning section of the trough-type machine is often supplied by a separate hot water heater. The hot water heater needs to heat the water from room temperature (20-25℃) to the process set temperature (85-90℃), which takes a long time and consumes a lot of energy.
[0003] In related technologies, the initial liquid preparation stage requires a large amount of hot water, often requiring at least two hot water heaters to meet the process requirements. During the normal process of replenishing hot water, although the replenishment volume is small, one hot water heater is still required to meet the demand, resulting in significant energy consumption during both the liquid preparation and replenishment stages. In addition, the long heating time of the hot water heater leads to an increase in liquid replacement time, which also affects the equipment's capacity and uptime.
[0004] Therefore, how to reduce the energy consumption of heat exchange devices is a technical problem that needs to be solved by those skilled in the art. Utility Model Content
[0005] The purpose of this invention is to provide a heat exchange device and a wet trough-type equipment for photovoltaic cells, which can effectively reduce energy consumption, improve heat exchange efficiency, and save costs.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A heat exchange device, comprising: A water heater is used to heat the heat exchange medium. A heat exchange pipe assembly is installed on the outer wall of the drying tank. The heat exchange pipe assembly is used to allow the heat exchange medium to flow through the drying tank and exchange heat with the outer wall of the drying tank before flowing into the water tank to be filled.
[0007] On the other hand, the heat exchange pipe assembly includes: Heat exchange pipes are used to fit against the side wall of the drying tank; A water outlet pipe is connected between the heat exchange pipe and the water heater, and is used to allow the heat exchange medium to flow out of the heat exchange pipe and into the water heater; A branch water outlet pipe is connected to the outlet water pipe and is used to allow the heat exchange medium in the heat exchange pipe to flow into the water tank to be injected. A drain pipe is connected to the water heater and is used to allow the heat exchange medium to flow from the water heater into the water tank to be filled.
[0008] On the other hand, it also includes a water inlet pipe, which is connected to the heat exchange pipe and is used to allow the heat exchange medium to flow into the heat exchange pipe. The heat exchange pipe includes a number of heat exchange branch pipes, which are spaced apart and are all connected to the side wall of the drying tank.
[0009] On the other hand, an inlet water pipe is provided between the inlet water pipe and the heat exchange pipe; and / or, an outlet water pipe is provided between the outlet water pipe and the heat exchange pipe.
[0010] On the other hand, the heat exchange pipe has a U-shaped structure, and there are multiple sets of heat exchange pipes. The number of heat exchange pipes is the same as that of the drying tank, and adjacent heat exchange pipes are detachably connected by fasteners.
[0011] On the other hand, it also includes: A temperature detection component is used to obtain the temperature of the heat exchange medium, and the temperature detection component is installed inside the water outlet pipe; The control valve is installed on the outlet branch pipe; A controller is connected to the temperature detection component and the control valve, and the controller is used to control the opening degree of the control valve according to the temperature of the heat exchange medium.
[0012] This utility model also provides a wet-process trough-type equipment for photovoltaic cells, including the heat exchange device and drying trough described in any one of the above.
[0013] On the other hand, the drying tank is provided with a left side wall groove, a right side wall groove and a bottom groove on both sides and at the bottom, respectively. The left side wall groove, the bottom groove and the right side wall groove are connected in sequence to lay the heat exchange pipe.
[0014] On the other hand, it also includes a cover plate, which is disposed around the periphery of the drying tank and covers the surfaces of the left side wall groove, the right side wall groove and the bottom groove, so as to form a heat exchange channel between the cover plate and the left side wall groove, the right side wall groove and the bottom groove for the heat exchange pipe to pass through.
[0015] On the other hand, the cover plate includes a fixing layer and an insulation layer. The insulation layer is disposed on the first side of the fixing layer, and the second side of the fixing layer is provided with a fixing groove. The heat exchange pipe is detachably installed in the fixing groove.
[0016] The heat exchange device provided by this utility model includes: a water heater for heating a heat exchange medium; and a heat exchange pipe assembly surrounding the outer wall of a drying tank. The heat exchange pipe assembly allows the heat exchange medium to flow through the drying tank, exchange heat with the outer wall of the drying tank, and then flow into a water tank to be filled. This heat exchange device, by preheating the heat exchange medium input into the water heater under the action of the drying tank, and utilizing the side wall of the drying tank to exchange heat with the heat exchange medium, reduces the energy consumption of the water heater, saves costs, improves heating efficiency, saves solution preparation time, and increases equipment capacity and uptime during the initial solution preparation stage.
[0017] The photovoltaic cell wet-process trough equipment provided by this utility model is equipped with the above-mentioned heat exchange device. Since the heat exchange device has the above-mentioned technical effects, the photovoltaic cell wet-process trough equipment equipped with the heat exchange device should also have the corresponding technical effects. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A schematic diagram of a specific embodiment of the heat exchange device provided by this utility model; Figure 2 This is a schematic diagram of the heat exchange device and drying tank provided by this utility model. Figure 3 This is a schematic diagram of the structure of the wet-process trough-type equipment for photovoltaic cells provided by this utility model; Figure 4 This is a schematic diagram of the structure of the drying tank provided by this utility model; Figure 5 This is a schematic diagram of the structure of the cover plate provided by this utility model.
[0020] Figure label: 10-Hot water heater; 15-Control valve; 20-1-Inlet water pipe; 20-2-Outlet water pipe; 20-3-Outlet branch water pipe; 25-1-Drying tank fan; 30-1-Inlet water pipe connector; 30-2-Outlet water pipe connector; 35-1-Left side wall groove; 35-2-Right side wall groove; 40-1-Drying tank; 45-Cover plate; 45-1-Fixing slot; 45-2-Fixing layer; 45-3-Insulation layer; 50-1-Heat exchange pipe; 55-1-Fastener. Detailed Implementation
[0021] The core of this utility model is to provide a heat exchange device and a wet trough-type equipment for photovoltaic cells, which can significantly reduce the energy consumption of water heaters, improve heat exchange efficiency, make full use of energy, and reduce waste.
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0024] Please refer to Figures 1 to 5 , Figure 1 A schematic diagram of a specific embodiment of the heat exchange device provided by this utility model; Figure 2 This is a schematic diagram of the heat exchange device and drying tank provided by this utility model. Figure 3 This is a schematic diagram of the structure of the wet-process trough-type equipment for photovoltaic cells provided by this utility model; Figure 4 This is a schematic diagram of the structure of the drying tank provided by this utility model; Figure 5 This is a schematic diagram of the structure of the cover plate provided by this utility model.
[0025] In this embodiment, the heat exchange device includes: Water heater 10 is used to heat the heat exchange medium; The heat exchange pipe assembly is installed on the outer wall of the drying tank 40-1. The heat exchange pipe assembly is used to supply the heat exchange medium to flow through the drying tank 40-1, and after heat exchange with the outer wall of the drying tank 40-1, it flows into the water tank to be filled.
[0026] Specifically, the water heater 10 will stop heating after reaching the set temperature, which is generally set to 95℃ according to process requirements, and then enter standby mode. The water heater 10 has a chamber for storing the heat exchange medium. The heat exchange medium entering the chamber of the water heater 10 will be heated to the target temperature under the action of the water heater 10, and then transported to the water tank to be filled through the drain pipe. The heat exchange medium can be water or other solutions. The lower temperature heat exchange medium enters the heat exchange pipe 50-1, and after heat exchange with the drying tank 40-1, the temperature rises, and then flows into the water tank to be filled, or into the water heater 10 as needed, or, according to a certain proportion, part of it flows into the water tank to be filled and part of it flows into the water heater 10.
[0027] The heat exchange device provided by this utility model preheats the heat exchange medium input into the water heater 10 under the action of the drying tank 40-1, and uses the side wall of the drying tank 40-1 to exchange heat with the heat exchange medium. In the initial liquid preparation stage, it can reduce the energy consumption of the water heater 10, save costs, improve heating efficiency, save liquid preparation time, and increase equipment capacity and utilization rate. Heat exchange pipe 50-1 is used to fit against the side wall of drying tank 40-1; The outlet pipe 20-2 is connected between the heat exchange pipe 50-1 and the water heater 10, and is used to allow the heat exchange medium to flow out of the heat exchange pipe 50-1 and into the water heater 10. The outlet branch pipe 20-3 is connected to the outlet pipe 20-2 and is used to supply the heat exchange medium in the heat exchange pipe 50-1 into the water tank to be injected. The drain pipe is connected to the water heater 10 and is used to supply the heat exchange medium from the water heater 10 into the water tank to be filled.
[0028] Specifically, the lower-temperature heat exchange medium enters the heat exchange pipe 50-1, and after heat exchange with the drying tank 40-1, its temperature rises. Then, as needed, it flows into the water tank to be filled through the outlet branch pipe 20-3, or according to a certain ratio, part of it flows into the water tank to be filled and the other part flows into the water heater 10. Furthermore, the outlet pipe 20-2, the outlet branch pipe 20-3 and / or the drainage pipe can be PP (Polypropylene) pipes with a diameter of Ф32mm.
[0029] The heat exchange device, through the outlet branch pipe 20-3, allows for a slower flow rate of the heat exchange medium within the heat exchange pipe 50-1 during the replenishment stage due to the smaller amount of heat exchange medium required. This slower flow rate ensures the heat exchange medium in the heat exchange pipe 50-1 can fully absorb the heat from the drying tank 40-1. The higher temperature of the heat exchange medium in the heat exchange pipe 50-1 allows it to be directly introduced into the water tank without needing to be heated by the water heater 10, further reducing the energy consumption of the water heater 10, improving efficiency, and lowering costs.
[0030] In some embodiments, an inlet pipe 20-1 is also included, which is connected to a heat exchange pipe 50-1 for supplying heat exchange medium into the heat exchange pipe 50-1. The heat exchange pipe 50-1 includes several heat exchange branch pipes, which are spaced apart and are all connected to the side wall of the drying tank 40-1. Specifically, in order to improve the heat exchange efficiency between the heat exchange pipe 50-1 and the drying tank 40-1, the heat exchange pipe 50-1 is composed of multiple heat exchange branch pipes, each of which is connected to the side wall of the drying tank 40-1 and spaced apart, which can more fully absorb the heat from the side wall of the drying tank 40-1 and improve the heat exchange efficiency. Furthermore, the number of heat exchange branch pipes can be selected as needed, for example, 10-20 pipes. The heat exchange branch pipes can be PFA (Perfluoroalkoxyalkane) pipes with a diameter of Ф5mm and a spacing of 10mm between adjacent heat exchange branch pipes.
[0031] In some embodiments, an inlet water splitter 30-1 is provided between the water inlet pipe 20-1 and the heat exchange pipe 50-1; specifically, the inlet water splitter 30-1 is used to distribute the heat exchange medium in the water inlet pipe 20-1 to each heat exchange branch pipe of the heat exchange pipe 50-1.
[0032] In some embodiments, a water outlet pipe 30-2 is provided between the water outlet pipe 20-2 and the heat exchange pipe 50-1. The water outlet pipe 30-2 is used to collect the heat exchange medium in each heat exchange branch pipe of the heat exchange pipe 50-1 into the water outlet pipe 20-2. Furthermore, the water inlet pipe 30-1 and / or the water outlet pipe 30-2 can be PFA manifolds. In some embodiments, the heat exchange pipes 50-1 have a U-shaped structure, and there are multiple sets of heat exchange pipes 50-1. The number of heat exchange pipes 50-1 is the same as that of the drying tank 40-1, and adjacent heat exchange pipes 50-1 are detachably connected by fasteners 55-1. The U-shaped structure of the heat exchange pipes 50-1 not only better matches the outer wall structure of the drying tank 40-1, but also facilitates the connection between adjacent sets of heat exchange pipes 50-1. Specifically, the number of heat exchange pipes 50-1 can be determined according to the number of drying tanks 40-1, for example, 4-6, and the actual number can be selected according to needs. Furthermore, the number of heat exchange branch pipes in adjacent sets of heat exchange pipes 50-1 is the same, and they are connected one-to-one. Specifically, the fasteners 55-1 include two connecting pipe sections and nuts, which are welded to the two adjacent heat exchange branch pipes respectively. The connecting pipe sections are threaded, and the two sets of heat exchange pipes 50-1 can be quickly connected by the cooperation of the nuts and threads.
[0033] In some implementations, it also includes: A temperature detection component is used to obtain the temperature of the heat exchange medium. The temperature detection component is installed inside the outlet water pipe 20-2. Control valve 15 is installed on the outlet branch pipe 20-3; The controller is connected to the temperature sensing component and the control valve 15. The controller is used to control the opening degree of the control valve 15 according to the temperature of the heat exchange medium.
[0034] Specifically, by setting the control valve 15, the flow rate of the outlet branch pipe 20-3 can be adjusted according to the temperature of the heat exchange medium in the outlet pipe 20-2. During the replenishment stage, if the temperature of the heat exchange medium in the heat exchange pipe 50-1 meets the requirements, the heat exchange medium in the heat exchange pipe 50-1 can be directly introduced into the water tank to be filled. At this time, the control valve 15 can be adjusted to the fully open state. If the temperature of the heat exchange medium in the heat exchange pipe 50-1 does not meet the requirements, the heat exchange medium in the heat exchange pipe 50-1 can be directly introduced into the water heater 10 for heating before the water tank to be filled is introduced. Alternatively, based on the temperature of the heat exchange medium in heat exchange pipe 50-1, a portion of the heat exchange medium can be directly introduced into the water tank to be filled, while the other portion is heated in the water heater 10 before being introduced into the water tank. The above process is for the replenishment stage. For the dispensing stage, since the water tank requires a large amount of heat exchange medium, control valve 15 can be closed, and all the heat exchange medium in heat exchange pipe 50-1 can be heated in the water heater 10 before being introduced into the water tank. Both methods aim to reduce the energy consumption of the water heater 10, fully utilize the heat of the drying tank 40-1, and save costs while minimizing heat loss from the drying tank 40-1.
[0035] In some implementations, the temperature detection component is a temperature sensor, which is used to detect the temperature of the heat exchange medium in the water outlet pipe 20-2. It has high detection accuracy and improves the controller's adjustment accuracy of the control valve 15.
[0036] In some embodiments, the control valve 15 is a pneumatic valve. The pneumatic valve changes the gas passage by adjusting the position of the valve core, thereby opening, closing or regulating the flow of the gas passage. The pneumatic valve can precisely control the pressure, reduce energy loss and improve overall efficiency.
[0037] In addition to the heat exchange device mentioned above, this utility model also provides a photovoltaic cell wet-processing trough equipment including the heat exchange device mentioned above; the photovoltaic cell wet-processing trough equipment includes a heat exchange device and a drying tank 40-1; specifically, the drying tank 40-1 is a PVDF (Polyvinylidene Fluoride) drying tank 40-1, and the drying tank 40-1 includes a blower, a heater, pipelines, the drying tank 40-1 body and the tank cover; the heater can be a PTC (Positive Temperature Coefficient) heater.
[0038] In some embodiments, there are multiple drying tanks 40-1, and the number of heat exchange pipes 50-1 is the same as the number of drying tanks 40-1, and they correspond one-to-one; the number of drying tanks 40-1 can be 4-8, depending on actual needs.
[0039] In some embodiments, the drying tank 40-1 has a left wall groove 35-1, a right wall groove 35-2, and a bottom groove on both sides and at the bottom, respectively. The left wall groove 35-1, the bottom groove, and the right wall groove 35-2 are connected in sequence to lay the heat exchange pipe 50-1. Specifically, the left wall groove 35-1, the right wall groove 35-2, and the bottom groove are set on the drying tank 40-1 body. Specifically, by setting grooves on both the side walls and the bottom of the drying tank 40-1 body, the heat emitted by the drying tank 40-1 body can be fully utilized, and the heat exchange efficiency can be improved. Specifically, the setting of the left wall groove 35-1 and the right wall groove 35-2 should avoid the position of the blower to reduce interference.
[0040] In some embodiments, a cover plate 45 is also included. The cover plate 45 is disposed around the periphery of the drying tank 40-1 and covers the surfaces of the left wall groove 35-1, the right wall groove 35-2, and the bottom groove to form a heat exchange channel through which the heat exchange pipe 50-1 passes between the cover plate 45 and the left wall groove 35-1, the right wall groove 35-2, and the bottom groove. The cover plate 45 can cover the two side walls of the drying tank 40-1, which can restrict the heat exchange pipe 50-1 on the one hand, and concentrate heat in the heat exchange channel on the other hand, further improving the heat exchange efficiency. The cover plate 45 can be a PFA cover plate 45, which has good temperature resistance, good safety, and low cost. Of course, other materials can also be used instead, such as PVDF material.
[0041] In some embodiments, the cover plate 45 includes a fixing layer 45-2 and an insulation layer 45-3. The insulation layer 45-3 is disposed on the first side of the fixing layer 45-2, and the second side of the fixing layer 45-2 is provided with a fixing groove 45-1. The heat exchange pipe 50-1 is detachably installed in the fixing groove 45-1. Specifically, the fixing layer 45-2 plays a supporting role, and the hardness of the fixing layer 45-2 can be appropriately increased to improve its strength. The insulation layer 45-3 can increase thermal resistance and reduce the heat transfer rate. For example, materials such as fiber cotton can be selected, and specific materials can be selected according to needs.
[0042] In one specific embodiment, the heat exchange medium introduced from the power end enters the inlet water pipe 20-1 and then enters the heat exchange pipe 50-1 in the left wall groove 35-1 of the drying tank 40-1. It then passes through the heat exchange pipe 50-1 in the right wall groove 35-2 of the drying tank 40-1 and enters the outlet water pipe 20-2 through the outlet water pipe 30-2. The heat exchange branch pipes in the heat exchange pipe 50-1 are arranged side-by-side in the left wall groove 35-1, the right wall groove 35-2, and the bottom groove. The groove width of the left wall groove 35-1, the right wall groove 35-2, and the bottom groove is 10mm, and the groove depth is 3mm. Each heat exchange branch pipe is tightly attached to the drying tank 40-1. The side walls are evenly distributed; when there are multiple drying tanks 40-1, the adjacent heat exchange pipes 50-1 are connected; the left side wall groove 35-1, the right side wall groove 35-2 and the bottom groove are covered with cover plates 45 respectively, and fastened with screws to achieve safety and heat preservation; the heat exchange medium entering the outlet pipe 20-2 is divided into two paths by the outlet branch pipe 20-3: the first path enters the water heater 10 when the control valve 15 is closed, serving as the heat exchange medium source for the water heater 10; the second path enters the outlet branch pipe 20-3 when the control valve 15 is open, to replenish hot water to each tank to be filled; when there are multiple heat exchange pipes 50-1, they can be connected in series by fasteners 55-1.
[0043] Specifically, the operation of this heat exchange device is as follows: 1. When the drying tank 40-1 is working normally, the blower draws in the externally filtered air, heats it once, and then it enters the PTC heater for secondary heating. The air then enters the drying tank 40-1 through the pipeline. The temperature inside the drying tank 40-1 can be maintained at 95℃-98℃ for a long time. Since the drying tank 40-1 is made of PVDF material, the temperature inside the drying tank 40-1 is conducted to the outer wall of the drying tank 40-1, which can be maintained at 80-85℃. 2. The heat exchange medium at the power end enters the inlet water pipe 20-1 and then enters the heat exchange pipe 50-1 in the groove 35-1 on the left side wall of the drying tank 40-1. It then passes through the heat exchange pipe 50-1 in the groove 35-2 on the right side wall of the drying tank 40-1, and finally enters the outlet water pipe 20-2 through the outlet water pipe 30-2. The temperature of the heat exchange medium in the outlet water pipe 30-2 can reach 50-60℃. It is divided into two paths: the first path, when the control valve 15 is closed, enters the water heater 10 as the heat exchange medium source, reducing the heating time and energy consumption; the second path, when the control valve 15 is open, enters the hot water replenishment pipes of each water tank, serving as a supplementary heat exchange medium when the water heater 10 is in standby mode, eliminating the need to heat the heat exchange medium and further reducing the energy consumption of the water heater 10.
[0044] The heat exchange device and the wet-process trough equipment for photovoltaic cells have the following beneficial effects: 1. When the water heater 10 is in use, the heat exchange device can increase the inlet water temperature of the heat exchange medium in the water heater 10, compress the heating time of the water heater 10, reduce the heating power of the water heater 10, and reduce the energy consumption of the water heater 10. 2. By reducing the heat exchange time of the hot water machine 10, the liquid preparation time of the water tank can be reduced, thereby increasing the equipment's capacity and utilization rate; 3. During the operation of the equipment, when the water tank needs to be replenished with hot water, that is, when the water tank enters the liquid replenishment stage, the heat exchange medium after heat exchange through the heat exchange device can be directly used for the replenishment of hot water in the water tank, so that the water heater 10 can remain in standby mode without doing work to heat, thereby reducing the energy consumption of the water heater 10. 4. The device is designed in the groove on the outer wall of the drying tank 40-1, and uses the waste heat of the drying tank 40-1 for heat exchange. The overall structure has good sealing performance, and there is no safety risk such as leakage or fire. It can simultaneously achieve the same efficiency of drying and heat exchange, and further improve the thermal energy utilization rate of the drying tank 40-1.
[0045] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0046] The heat exchange device provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.
Claims
1. A wet-process trough-type equipment for photovoltaic cells, comprising a heat exchange device and a drying trough (40-1), characterized in that, The heat exchange device includes: A water heater (10) is used to heat the heat exchange medium; A heat exchange pipe assembly is installed on the outer wall of the drying tank (40-1). The heat exchange pipe assembly is used to allow the heat exchange medium to flow through the drying tank (40-1) and exchange heat with the outer wall of the drying tank (40-1) before flowing into the water tank to be filled. The drying tank (40-1) has a left wall groove (35-1), a right wall groove (35-2) and a bottom groove on both sides and at the bottom, respectively. The left wall groove (35-1), the bottom groove and the right wall groove (35-2) are connected in sequence to lay the heat exchange pipe (50-1).
2. The photovoltaic cell wet-process trough equipment according to claim 1, characterized in that, The heat exchange pipe assembly includes: Heat exchange pipe (50-1) is used to fit against the side wall of the drying tank (40-1); The outlet pipe (20-2) is connected between the heat exchange pipe (50-1) and the water heater (10) for the heat exchange medium to flow out of the heat exchange pipe (50-1) and into the water heater (10). The outlet branch pipe (20-3) is connected to the outlet pipe (20-2) and is used to allow the heat exchange medium in the heat exchange pipe (50-1) to flow into the water tank to be injected; A drain pipe is connected to the water heater (10) for supplying the heat exchange medium from the water heater (10) into the water tank to be filled.
3. The photovoltaic cell wet-process trough equipment according to claim 2, characterized in that, It also includes a water inlet pipe (20-1), which is connected to the heat exchange pipe (50-1) for supplying the heat exchange medium to flow into the heat exchange pipe (50-1). The heat exchange pipe (50-1) includes a plurality of heat exchange branch pipes, each of which is spaced apart and is fitted and connected to the side wall of the drying tank (40-1).
4. The photovoltaic cell wet-process trough equipment according to claim 3, characterized in that, An inlet water pipe (20-1) is provided between the inlet water pipe (20-1) and the heat exchange pipe (50-1); and / or, an outlet water pipe (20-2) is provided between the outlet water pipe (20-2) and the heat exchange pipe (50-1).
5. The photovoltaic cell wet-process trough equipment according to claim 2, characterized in that, The heat exchange pipe (50-1) has a U-shaped structure and there are multiple sets of heat exchange pipes (50-1). The number of heat exchange pipes (50-1) is the same as that of the drying tank (40-1), and adjacent heat exchange pipes (50-1) are detachably connected by fasteners (55-1).
6. The photovoltaic cell wet-process trough equipment according to any one of claims 2 to 5, characterized in that, Also includes: A temperature detection component is used to obtain the temperature of the heat exchange medium, and the temperature detection component is installed in the outlet pipe (20-2); A control valve (15) is installed on the outlet branch pipe (20-3); A controller is connected to the temperature detection component and the control valve (15), and the controller is used to control the opening degree of the control valve (15) according to the temperature of the heat exchange medium.
7. The photovoltaic cell wet-process trough equipment according to claim 1, characterized in that, It also includes a cover plate (45), which is disposed around the periphery of the drying tank (40-1) and covers the surfaces of the left side wall groove (35-1), the right side wall groove (35-2) and the bottom groove, so as to form a heat exchange channel for the heat exchange pipe (50-1) to pass through between the cover plate (45) and the left side wall groove (35-1), the right side wall groove (35-2) and the bottom groove.
8. The photovoltaic cell wet-process trough equipment according to claim 7, characterized in that, The cover plate (45) includes a fixing layer (45-2) and an insulation layer (45-3). The insulation layer (45-3) is disposed on the first side of the fixing layer (45-2). The second side of the fixing layer (45-2) is provided with a fixing slot (45-1). The heat exchange pipe (50-1) is detachably installed in the fixing slot (45-1).