Box-type phase-change heat exchange equipment

Abstract

The invention relates to the technical field of heat exchange, in particular to box-type phase-change heat exchange equipment which comprises a tank body, partition plates are symmetrically and fixedly connected to the inner side of the tank body, finned tubes are fixedly connected to the inner walls of the partition plates, protective shells are fixedly connected to the outer sides of the partition plates, and an oil inlet pipe and an oil outlet pipe are fixedly connected to the outer side of the tank body. An electric heating body is fixedly connected to the inner side of the tank body, electric energy is converted into heat energy through the electric heating body, and the internal environment of the tank body is heated. At the moment, heat conduction liquid is introduced into the tank body from the oil inlet pipe, and the heat conduction liquid flows outside the finned pipes after entering the tank body. Meanwhile, external oil enters the finned tube from a corresponding pipeline connected with the tank body, in the process, the finned tube is surrounded by the heat conduction liquid heated by the electric heating body, and after the heat conduction liquid absorbs heat generated by the electric heating body, the heat conduction liquid transmits the heat to the oil flowing in the finned tube through the tube wall of the finned tube, so that the temperature of the oil is increased.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange, and in particular to a box-type phase-change heat exchange device. Background Art

[0002] In today's industrial field, the demand for efficient thermal management and energy storage technology is growing. In many industrial processes, such as chemical production, oil refining, food processing, and building heating, fluids (such as oil, gas, etc.) are often required to be heated or cooled to meet specific process requirements or achieve efficient use of energy. Traditional heating and heat exchange equipment has many limitations in practical applications.

[0003] In the prior art, traditional heat exchange equipment usually relies on simple shell and tube heat exchangers or plate heat exchangers, which have limited heat exchange area and relatively low heat transfer coefficient, making it difficult to meet the needs of efficient heat exchange. In some processes with high temperature control requirements, traditional heat exchange equipment cannot respond quickly to temperature changes, resulting in unstable process and difficult to ensure product quality. Summary of the invention

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the present invention to solve the technical problems is: a box-type phase change heat exchange device, comprising: a tank body, a partition plate is symmetrically fixedly connected to the inner side of the tank body, a fin tube is fixedly connected to the inner wall of the partition plate, the inlet of the fin tube is located at the bottom of the tank body near the oil outlet pipe, and the outlet of the fin tube is located at the top of the tank body near the manhole cover, a protective shell is fixedly connected to the outer side of the partition plate, an oil inlet pipe and an oil outlet pipe are fixedly connected to the outer side of the tank body, an electric heating body is fixedly connected to the inner side of the tank body, the top of the tank body is fixedly connected to the manhole cover by bolts, a liquid adding pipe is fixedly connected to the top of the tank body, an expansion valve is fixedly connected to the top of the tank body away from the manhole cover, and a sewage valve seat is fixedly connected to the bottom of the tank body, and the sewage valve seat is used to regularly discharge sewage in the tank body, and the electric heating body converts electrical energy into thermal energy to heat the internal environment of the tank body. At the same time, a heat transfer fluid is introduced into the tank body from the oil inlet pipe, and after the heat transfer fluid enters the tank body, it flows outside the fin tube. At the same time, the external oil enters the fin tube from the corresponding pipe connected to the tank body. The inlet of the fin tube is located at the bottom of the tank body near the oil outlet pipe. The oil flows along the inside of the fin tube. In this process, the fin tube is surrounded by the heat transfer fluid heated by the electric heating body. After the heat transfer fluid absorbs the heat generated by the electric heating body, it transfers the heat to the oil flowing inside through the wall of the fin tube, so that the oil temperature increases.

[0005] A photovoltaic assembly, wherein the inner side of the photovoltaic assembly is fixedly connected to the outer wall of the tank body, the photovoltaic assembly comprises a mounting frame, the outer side of the mounting frame is fixedly connected with a guide plate, the bottom of the guide plate is fixedly connected with a support frame, the top of the support frame is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a screw rod, the outer wall of the screw rod is threadedly connected with the supporting assembly, the inner side of the mounting frame is fixedly connected with a telescopic cylinder, the output end of the telescopic cylinder is fixedly connected with a sliding rod, the outer wall of the sliding rod is rotatably connected with a movable rod, the top end of the movable rod is rotatably connected with a PVT solar panel, the top of the guide plate is fixedly connected with a righting rod, the top of the righting rod is fixedly connected with the top of the support frame, the telescopic cylinder pushes the sliding rod to move, and the sliding rod drives the movable rod to move, at this time, the top end of the movable rod will push the PVT solar panel to do a pitch motion around the rotation connection point between it and the mounting frame, thereby realizing the adjustment of the pitch angle of the PVT solar panel.

[0006] Preferably, both ends of the fin tube are fixedly connected to the inner wall of the tank body, the oil inlet pipe is located on the top of the oil outlet pipe, and the protective shell is symmetrically arranged along the central axis of the partition plate. The fin tube can effectively promote the heat exchange between the phase change material and the oil by virtue of its large heat exchange area and good thermal conductivity.

[0007] Preferably, the inner side of the mounting frame is fixedly connected to the outer wall of the tank body, the two ends of the screw rod are rotatably connected to the inner wall of the support frame, the inner side of the support assembly is slidably connected to the outer wall of the straightening rod, and the drive motor is started to drive the screw rod to rotate, so that the slider moves along the axial direction of the screw rod when the screw rod rotates. The movement of the slider drives the entire support assembly to move together.

[0008] Preferably, both ends of the sliding rod are slidably connected to the inner side of the mounting frame, the top of the mounting frame is rotatably connected to the bottom of the PVT solar panel, and the PVT solar panel is fixedly connected to the outer side of the electric heating body through a transmission line. The PVT solar panel in the photovoltaic assembly converts solar energy into electrical energy under lighting conditions.

[0009] Preferably, the supporting assembly includes a slider, the outer side of the slider is fixedly connected to a transverse bracket, the outer side of the transverse bracket is fixedly connected to a hollow guide rod, the outer wall of the hollow guide rod is slidably connected to a sliding seat, the top of the sliding seat is fixedly connected to a support plate, the sliding seat can drive the support plate to slide along the surface of the hollow guide rod, and drive the maintenance personnel to gradually approach the position of the manhole cover during the lifting process, without the need for additional horizontal position adjustment operations, thereby improving the convenience and efficiency of maintenance operations.

[0010] Preferably, the inner side of the slider is threadedly connected to the outer wall of the screw rod, and the inner side of the transverse bracket is slidably connected to the outer wall of the straightening rod. The transverse bracket can slide along the surface of the straightening rod when the support assembly moves upward, providing stable support for the hollow guide rod.

[0011] Preferably, a tension spring is fixedly connected to the inner side of the hollow guide rod, a connecting plate is fixedly connected to the outer side of the tension spring, a boost roller is rotatably connected to the outer side of the support plate, and a limiting frame is rotatably connected to the top of the support plate. When the boost roller is disengaged from the surface of the guide plate, the tension spring gradually contracts and pulls the connecting plate toward the side close to the tank body.

[0012] Preferably, the outer side of the connecting plate is slidingly connected to the inner side of the hollow guide rod, the outer side of the connecting plate is fixedly connected to the outer side of the sliding seat, the outer side of the boost roller is in contact with the outer wall of the guide plate, the outer wall of the boost roller is in contact with the outer wall of the tank body, and the outer side of the limit frame is in contact with the outer wall of the connecting plate. The maintenance personnel rotate the limit frame so that the surface of the limit frame rests on the surface of the connecting plate. At this time, when the boost roller is disengaged from the guide plate, the limit frame can hold the connecting plate against itself.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The present invention converts electrical energy into thermal energy by setting an electric heater to heat the internal environment of the tank body. At this time, a heat transfer liquid is introduced into the tank body from the oil inlet pipe. After the heat transfer liquid enters the tank body, it flows outside the fin tube. At the same time, the external oil enters the fin tube from the corresponding pipe connected to the tank body. The inlet of the fin tube is located at the bottom of the tank body close to the oil outlet pipe. The oil flows along the inside of the fin tube. In this process, the fin tube is surrounded by the heat transfer liquid heated by the electric heater on the outside. After the heat transfer liquid absorbs the heat generated by the electric heater, it transfers the heat to the oil flowing inside through the tube wall of the fin tube, so that the oil temperature increases.

[0015] 2. The present invention sets a protective shell, and the phase change material inside the protective shell will also be affected by the heat generated by the electric heating body and the heat radiated from the heated heat transfer fluid through the fin tube wall by heat conduction, and the temperature gradually increases. When the temperature of the phase change material reaches its specific phase change point (generally a phase change occurs between 45 and 55°C), the phase change material undergoes a phase change, and in this process it can absorb and store a large amount of thermal energy. The protective shell is a mesh structure, which can not only provide a relatively stable and heat-insulating spatial environment for the phase change material, but also help the phase change material to be heated evenly, reduce heat loss to other parts of the tank body, and improve heat storage efficiency, but also ensure that it can fully exchange heat with the external heat transfer fluid, making the heat transfer process smoother and more efficient.

[0016] 3. The present invention provides a manhole cover, which can be opened when needed. The operator can overhaul, maintain or inspect the fin tubes inside the tank and the phase change material inside the protective shell, and timely discover and deal with possible problems, thereby ensuring the normal operation of the equipment. The expansion valve plays a buffering role, automatically adjusting its opening to release or contain a certain amount of gas or liquid, so that the pressure inside the tank is kept within a safe range and the tank is prevented from being deformed under pressure.

[0017] 4. The present invention sets up photovoltaic modules, and the PVT solar panels in the photovoltaic modules convert solar energy into electrical energy under lighting conditions. The solar energy is transmitted to the electric heating body through the transmission line, providing electrical energy for the electric heating body, providing clean energy support for the equipment, reducing dependence on external power sources, and improving the energy efficiency and environmental protection of the equipment.

[0018] 5. The present invention sets a telescopic cylinder, which pushes the sliding rod to move, and the sliding rod drives the movable rod to move. At this time, the top of the movable rod will push the PVT solar panel to do a pitch motion around the rotating connection point between it and the mounting frame, thereby realizing the adjustment of the pitch angle of the PVT solar panel, further optimizing its receiving angle of sunlight, improving the efficiency of photovoltaic power generation, and ensuring that sufficient and stable electricity is provided for the electric heating body.

[0019] 6. The present invention sets a support assembly. When the equipment needs to be repaired, especially when it is necessary to approach the manhole cover for operation, the maintenance personnel can stand on the surface of the support assembly and start the drive motor. The drive motor drives the screw to rotate, so that the slider moves along the axial direction of the screw when the screw rotates. The movement of the slider drives the entire support assembly to move together. By controlling the forward and reverse rotation of the drive motor, the overall height of the support assembly can be accurately adjusted, so that the maintenance personnel can be lifted to a suitable height, close to the manhole cover, and convenient for the maintenance personnel to operate.

[0020] 7. The present invention sets a tension spring. During the upward movement of the support assembly, when the boost roller is separated from the surface of the guide plate, the tension spring gradually contracts and pulls the connecting plate to the side close to the tank body. At the same time, the sliding seat drives the support plate to slide along the surface of the hollow guide rod, so that the boost roller is always in contact with the surface of the tank body. In this way, the support plate can gradually approach the position of the manhole cover in the process of driving the maintenance personnel to lift, without the need for additional horizontal position adjustment operations, thereby improving the convenience and efficiency of the maintenance operation. The transverse bracket can slide along the surface of the straightening rod when the support assembly moves upward, providing stable support for the hollow guide rod.

[0021] 8. The present invention sets a limit frame. When the surface of the boost roller is not separated from the surface of the guide plate, the maintenance personnel can rotate the limit frame so that the surface of the limit frame is placed on the surface of the connecting plate. At this time, when the boost roller is separated from the guide plate, the limit frame can hold the connecting plate, thereby limiting the contraction of the tension spring, so that the support plate does not approach the position of the manhole cover when moving upward, and directly reaches the position of the PVT solar panel, thereby expanding the application range of the support assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure inside the tank body of the present invention;

[0025] Figure 4 is a schematic structural diagram of a photovoltaic module of the present invention;

[0026] Figure 5 The present invention Figure 4 A schematic diagram of the structure at A;

[0027] Figure 6 It is a structural schematic diagram of the support frame of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the support assembly of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the hollow guide rod of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the support plate of the present invention.

[0031] In the figure: 1. tank body; 2. photovoltaic module; 3. partition plate; 4. fin tube; 5. protective shell; 6. oil inlet pipe; 7. oil outlet pipe; 8. electric heating body; 9. manhole cover; 10. liquid filling pipe; 11. expansion valve; 12. drain valve seat; 21. mounting frame; 22. guide plate; 23. support frame; 24. drive motor; 25. screw rod; 26. support assembly; 27. telescopic cylinder; 28. sliding rod; 29. ​​movable rod; 20. PVT solar panel; 210. righting rod; 261. slider; 262. transverse bracket; 263. hollow guide rod; 264. connecting plate; 265. tension spring; 266. sliding seat; 267. support plate; 268. booster roller; 269. limit frame. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0033] Example: See Figure 1 - Fig. 9 The present invention provides a technical solution: a box-type phase-change heat exchange device, comprising:

[0034] The tank body 1 has a partition plate 3 fixedly connected to the inner side of the tank body 1 symmetrically, a finned tube 4 fixedly connected to the inner wall of the partition plate 3, a protective shell 5 fixedly connected to the outer side of the partition plate 3, an oil inlet pipe 6 and an oil outlet pipe 7 fixedly connected to the outer side of the tank body 1, an electric heater 8 fixedly connected to the inner side of the tank body 1, a manhole cover 9 fixedly connected to the top of the tank body 1 by bolts, a liquid adding pipe 10 fixedly connected to the top of the tank body 1, an expansion valve 11 fixedly connected to the top of the tank body 1 away from the manhole cover 9, a drain valve seat 12 fixedly connected to the bottom of the tank body 1, both ends of the finned tube 4 fixedly connected to the inner wall of the tank body 1, the oil inlet pipe 6 is located on the top of the oil outlet pipe 7, the protective shell 5 is symmetrically arranged along the central axis of the partition plate 3, and the electric heater 8 converts electrical energy into thermal energy to heat the internal environment of the tank body 1. At this time, a heat transfer fluid is introduced into the tank body 1 from the oil inlet pipe 6, and after the heat transfer fluid enters the tank body 1, it flows outside the finned tube 4. At the same time, external oil enters the fin tube 4 from the corresponding pipe connected to the tank body 1. The inlet of the fin tube 4 is located at the bottom of the tank body 1 near the oil outlet pipe 7. The oil flows along the inside of the fin tube 4. In this process, the fin tube 4 is surrounded by the heat-conducting liquid heated by the electric heater 8. After the heat-conducting liquid absorbs the heat generated by the electric heater 8, it transfers the heat to the oil flowing inside it through the tube wall of the fin tube 4, so that the oil temperature increases.

[0035] The phase change material in the protective shell 5 will also be affected by the heat generated by the electric heating body 8 and the heat radiated from the wall of the finned tube 4 by the heated heat transfer fluid through heat conduction, and the temperature will gradually increase. When the temperature of the phase change material reaches its specific phase change point (generally a phase change occurs between 45 and 55°C), the phase change material undergoes a phase change, and in this process it can absorb and store a large amount of thermal energy. The protective shell 5 is a mesh structure, which can not only provide a relatively stable and heat-insulating space environment for the phase change material, but also help the phase change material to be heated evenly, reduce heat loss to other parts of the tank body 1, and improve heat storage efficiency, but also ensure that it can fully exchange heat with the external heat transfer fluid, making the heat transfer process smoother and more efficient. In addition, the partition plate 3 plays a stable supporting role for the finned tube 4 and the protective shell 5 in the tank body 1, ensuring the stability of the position of each component during the heat storage process and ensuring the orderly progress of the entire heat exchange process.

[0036] When the tank body 1 produces pressure changes due to thermal expansion and contraction or heat absorption and release processes, the expansion valve 11 plays a buffering role. By automatically adjusting its opening, it releases or contains a certain amount of gas or liquid, so that the pressure in the tank body 1 is maintained within a safe range, and the tank body 1 is prevented from deforming under pressure. At the same time, the anti-expansion valve 11 further provides protection for the structure of the tank body 1 and enhances the ability of the tank body 1 to resist pressure changes. The manhole cover 9 is fixed to the manhole on the top of the tank body 1 by bolts, which is convenient to open when needed. The operator can overhaul, maintain or inspect the fin tubes 4 and the phase change material in the protective shell 5 inside the tank body 1, and promptly discover and deal with possible problems, thereby ensuring the normal operation of the equipment. The liquid filling pipe 10 is used to add thermal fluid when needed to ensure that the amount of thermal fluid in the system meets the equipment operation requirements. The sewage valve seat 12 is used to regularly discharge sewage from the tank body 1;

[0037] Photovoltaic assembly 2, the inner side of the photovoltaic assembly 2 is fixedly connected to the outer wall of the tank body 1, the photovoltaic assembly 2 includes a mounting frame 21, the outer side of the mounting frame 21 is fixedly connected with a guide plate 22, the bottom of the guide plate 22 is fixedly connected with a support frame 23, the top of the support frame 23 is fixedly connected with a drive motor 24, the output end of the drive motor 24 is fixedly connected with a screw rod 25, the outer wall of the screw rod 25 is threadedly connected with a support assembly 26, the inner side of the mounting frame 21 is fixedly connected with a telescopic cylinder 27, the output end of the telescopic cylinder 27 is fixedly connected with a sliding rod 28, the outer wall of the sliding rod 28 is rotatably connected with an active rod 29, and the top of the active rod 29 is rotatably connected with a PVT solar panel 20 The top of the guide plate 22 is fixedly connected with a straightening rod 210, the top of the straightening rod 210 is fixedly connected to the top of the support frame 23, the inner side of the mounting frame 21 is fixedly connected to the outer wall of the tank body 1, the two ends of the screw rod 25 are rotatably connected to the inner wall of the support frame 23, the inner side of the support assembly 26 is slidably connected to the outer wall of the straightening rod 210, the two ends of the sliding rod 28 are slidably connected to the inner side of the mounting frame 21, the top of the mounting frame 21 is rotatably connected to the bottom of the PVT solar panel 20, the PVT solar panel 20 is fixedly connected to the outer side of the electric heating body 8 through the transmission line, and the PVT solar panel 20 in the photovoltaic assembly 2 converts solar energy into electrical energy under light conditions. The PVT solar panel 20 excites the electron-hole pairs inside by absorbing photons in sunlight, and under the action of the built-in electric field of the semiconductor material, the electrons and holes move to the two poles respectively, thereby generating direct current. The direct current is transmitted to the electric heating body 8 through the transmission line, providing electric energy for the electric heating body 8, providing clean energy support for the equipment, reducing dependence on external power sources, and improving the energy efficiency and environmental protection of the equipment. In this process, the telescopic cylinder 27 pushes the sliding rod 28 to move, and the sliding rod 28 drives the movable rod 29 to move. At this time, the top of the movable rod 29 will push the PVT solar panel 20 to do a pitching movement around the rotating connection point between it and the mounting frame 21, thereby realizing the adjustment of the pitch angle of the PVT solar panel 20, further optimizing its receiving angle of sunlight, improving the efficiency of photovoltaic power generation, and ensuring that sufficient and stable electric energy is provided for the electric heating body 8. When the equipment needs to be repaired, especially when it is necessary to approach the manhole cover 9 for operation, the maintenance personnel can stand on the surface of the support assembly 26, and then start the drive motor 24, which drives the screw 25 to rotate, so that the slider 261 will move along the axial direction of the screw 25 when the screw 25 rotates. The movement of the slider 261 drives the entire support assembly 26 to move together. By controlling the forward and reverse rotation of the driving motor 24, the overall height of the supporting assembly 26 can be accurately adjusted, so that the maintenance personnel can be lifted to a suitable height and close to the manhole cover 9, which is convenient for the maintenance personnel to operate.

[0038] The support assembly 26 includes a slider 261, a transverse bracket 262 is fixedly connected to the outer side of the slider 261, a hollow guide rod 263 is fixedly connected to the outer side of the transverse bracket 262, a sliding seat 266 is slidably connected to the outer wall of the hollow guide rod 263, a support plate 267 is fixedly connected to the top of the sliding seat 266, the inner side of the slider 261 is threadedly connected to the outer wall of the screw rod 25, the inner side of the transverse bracket 262 is slidably connected to the outer wall of the straightening rod 210, a tension spring 265 is fixedly connected to the inner side of the hollow guide rod 263, a connecting plate 264 is fixedly connected to the outer side of the tension spring 265, and the support plate 267 is fixedly connected to the outer wall of the screw rod 25. The outer side is rotatably connected with a boost roller 268, the top of the support plate 267 is rotatably connected with a limiting frame 269, the outer side of the connecting plate 264 is slidably connected to the inner side of the hollow guide rod 263, the outer side of the connecting plate 264 is fixedly connected to the outer side of the sliding seat 266, the outer side of the boost roller 268 contacts the outer wall of the guide plate 22, the outer wall of the boost roller 268 contacts the outer wall of the tank body 1, and the outer side of the limiting frame 269 contacts the outer wall of the connecting plate 264. In the process of the support assembly 26 moving upward, when the boost roller 268 is separated from the surface of the guide plate 22, the tension spring 265 gradually contracts and connects The connecting plate 264 is pulled toward the side close to the tank body 1. At the same time, the sliding seat 266 drives the support plate 267 to slide along the surface of the hollow guide rod 263, so that the booster roller 268 is always in contact with the surface of the tank body 1. In this way, the support plate 267 can gradually approach the position of the manhole cover 9 in the process of driving the maintenance personnel to lift, without the need for additional horizontal position adjustment operations, thereby improving the convenience and efficiency of maintenance operations. Among them, the transverse bracket 262 can slide along the surface of the straightening rod 210 when the support assembly 26 moves upward, providing stable support for the hollow guide rod 263. When the PVT solar panel 2 needs to be adjusted, When the support assembly 26 is maintained and serviced, the maintenance personnel can also lift it through the support assembly 26. During the lifting, when the surface of the boosting roller 268 is not separated from the surface of the guide plate 22, the maintenance personnel can rotate the limit frame 269 so that the surface of the limit frame 269 is placed on the surface of the connecting plate 264. At this time, when the boosting roller 268 is separated from the guide plate 22, the limit frame 269 can hold the connecting plate 264, thereby limiting the contraction of the tension spring 265, so that the support plate 267 does not approach the position of the manhole cover 9 when moving upward, and directly reaches the position of the PVT solar panel 20, thereby expanding the application range of the support assembly 26.

[0039] Working principle:

[0040] When the box-type phase-change heat exchange device is in operation, it mainly achieves the heat storage and exchange function by means of the structure inside the tank body 1. After the electric heating body 8 is powered on, it starts to convert electrical energy into thermal energy, heats the internal environment of the tank body 1, and gradually increases the temperature inside the tank body 1.

[0041] At this time, the heat transfer fluid is introduced into the tank body 1 from the oil inlet pipe 6. After entering the tank body 1, the heat transfer fluid flows outside the fin tube 4. At the same time, the external oil enters the fin tube 4 from the corresponding pipe connected to the tank body 1. The inlet of the fin tube 4 is located at the bottom of the tank body 1 near the oil outlet pipe 7. The oil flows along the inside of the fin tube 4. In this process, the fin tube 4 is surrounded by the heat transfer fluid heated by the electric heater 8. After the heat transfer fluid absorbs the heat generated by the electric heater 8, it transfers the heat to the oil flowing inside through the tube wall of the fin tube 4, so that the oil temperature increases.

[0042] The phase change material in the protective shell 5 will also be affected by the heat generated by the electric heating body 8 and the heat radiated from the wall of the finned tube 4 by the heated heat transfer fluid through heat conduction, and the temperature will gradually increase. When the temperature of the phase change material reaches its specific phase change point (generally a phase change occurs between 45 and 55°C), the phase change material undergoes a phase change, and in this process it can absorb and store a large amount of thermal energy. The protective shell 5 is a mesh structure, which can not only provide a relatively stable and heat-insulating space environment for the phase change material, but also help the phase change material to be heated evenly, reduce heat loss to other parts of the tank body 1, and improve heat storage efficiency, but also ensure that it can fully exchange heat with the external heat transfer fluid, making the heat transfer process smoother and more efficient. In addition, the partition plate 3 plays a stable supporting role for the finned tube 4 and the protective shell 5 in the tank body 1, ensuring the stability of the position of each component during the heat storage process and ensuring the orderly progress of the entire heat exchange process.

[0043] When the tank body 1 produces pressure changes due to thermal expansion and contraction or heat absorption and release processes, the expansion valve 11 plays a buffering role. By automatically adjusting its opening, it releases or contains a certain amount of gas or liquid, so that the pressure in the tank body 1 is kept within a safe range and prevents the tank body 1 from deforming under pressure. At the same time, the expansion valve 11 further provides protection for the structure of the tank body 1 and enhances the ability of the tank body 1 to resist pressure changes. The manhole cover 9 is fixed to the manhole on the top of the tank body 1 by bolts, which is convenient to open when needed. The operator can overhaul, maintain or inspect the fin tube 4 and the phase change material in the protective shell 5 inside the tank body 1, and promptly discover and deal with possible problems, thereby ensuring the normal operation of the equipment. The liquid filling pipe 10 is used to add thermal fluid when needed to ensure that the amount of thermal fluid in the system meets the equipment operation requirements, and the sewage valve seat 12 is used to regularly discharge the sewage in the tank body 1.

[0044] In this process, the PVT solar panel 20 in the photovoltaic module 2 converts solar energy into electrical energy under illumination. The PVT solar panel 20 absorbs photons in sunlight to excite the electron-hole pairs inside. Under the action of the built-in electric field of the semiconductor material, the electrons and holes move to the two poles respectively, thereby generating direct current. The direct current is transmitted to the electric heating body 8 through the transmission line, providing electrical energy for the electric heating body 8, providing clean energy support for the equipment, reducing dependence on external power sources, and improving the energy efficiency and environmental protection of the equipment.

[0045] During this process, the telescopic cylinder 27 pushes the sliding rod 28 to move, and the sliding rod 28 drives the movable rod 29 to move. At this time, the top of the movable rod 29 will push the PVT solar panel 20 to perform a pitch motion around the rotating connection point between it and the mounting frame 21, thereby realizing the adjustment of the pitch angle of the PVT solar panel 20, further optimizing its receiving angle of sunlight, improving the efficiency of photovoltaic power generation, and ensuring that sufficient and stable electricity is provided to the electric heating body 8.

[0046] When the equipment needs to be repaired, especially when it is necessary to approach the manhole cover 9 for operation, the maintenance personnel can stand on the surface of the support assembly 26, and then start the drive motor 24 on the top of the support frame 23. The drive motor 24 drives the screw rod 25 to rotate, so that the slider 261 moves along the axial direction of the screw rod 25 when the screw rod 25 rotates. The movement of the slider 261 drives the entire support assembly 26 to move together. By controlling the forward and reverse rotation of the drive motor 24, the overall height of the support assembly 26 can be accurately adjusted, so that the maintenance personnel can be lifted to a suitable height, close to the manhole cover 9, and convenient for the maintenance personnel to operate.

[0047] During the upward movement of the support assembly 26, when the boost roller 268 is separated from the surface of the guide plate 22, the tension spring 265 gradually contracts and pulls the connecting plate 264 to the side close to the tank body 1. At the same time, the sliding seat 266 drives the support plate 267 to slide along the surface of the hollow guide rod 263, so that the boost roller 268 is always in contact with the surface of the tank body 1. In this way, the support plate 267 can gradually approach the position of the manhole cover 9 in the process of driving the maintenance personnel to lift, without the need for additional horizontal position adjustment operations, thereby improving the convenience and efficiency of maintenance operations. Among them, the transverse bracket 262 can slide along the surface of the straightening rod 210 when the support assembly 26 moves upward, providing stable support for the hollow guide rod 263.

[0048] When the PVT solar panel 20 needs to be maintained and serviced, it can also be lifted by maintenance personnel through the support assembly 26. During the lifting, when the surface of the boost roller 268 is not separated from the surface of the guide plate 22, the maintenance personnel can rotate the limit frame 269 so that the surface of the limit frame 269 is placed on the surface of the connecting plate 264. At this time, when the boost roller 268 is separated from the guide plate 22, the limit frame 269 can hold the connecting plate 264, thereby limiting the contraction of the tension spring 265, so that the support plate 267 does not approach the position of the manhole cover 9 when moving upward, and directly reaches the position of the PVT solar panel 20, thereby expanding the application range of the support assembly 26.

[0049] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A box-type phase change heat exchange device, characterized in that: include: A tank body (1), wherein a partition plate (3) is symmetrically fixedly connected to the inner side of the tank body (1), a finned tube (4) is fixedly connected to the inner wall of the partition plate (3), a protective shell (5) is fixedly connected to the outer side of the partition plate (3), an oil inlet pipe (6) and an oil outlet pipe (7) are fixedly connected to the outer side of the tank body (1), an electric heating body (8) is fixedly connected to the inner side of the tank body (1), a manhole cover (9) is fixedly connected to the top of the tank body (1) by bolts, a liquid adding pipe (10) is fixedly connected to the top of the tank body (1) away from the manhole cover (9), an expansion valve (11) is fixedly connected to the top of the tank body (1) on the side away from the manhole cover (9), and a sewage valve seat (12) is fixedly connected to the bottom of the tank body (1); A photovoltaic assembly (2), wherein the inner side of the photovoltaic assembly (2) is fixedly connected to the outer wall of the tank body (1), and the photovoltaic assembly (2) comprises a mounting frame (21), the outer side of the mounting frame (21) is fixedly connected to a guide plate (22), the bottom of the guide plate (22) is fixedly connected to a support frame (23), the top of the support frame (23) is fixedly connected to a drive motor (24), the output end of the drive motor (24) is fixedly connected to a screw rod (25), and the outer wall of the screw rod (25) is threadedly connected to A support assembly (26), the inner side of the mounting frame (21) is fixedly connected to a telescopic cylinder (27), the output end of the telescopic cylinder (27) is fixedly connected to a sliding rod (28), the outer wall of the sliding rod (28) is rotatably connected to a movable rod (29), the top of the movable rod (29) is rotatably connected to a PVT solar panel (20), the top of the guide plate (22) is fixedly connected to a straightening rod (210), and the top of the straightening rod (210) is fixedly connected to the top of the support frame (23).

2. A box-type phase change heat exchange device according to claim 1, characterized in that: The two ends of the fin tube (4) are fixedly connected to the inner wall of the tank body (1), the oil inlet pipe (6) is located on the top of the oil outlet pipe (7), and the protective shell (5) is symmetrically arranged along the central axis of the partition plate (3).

3. A box-type phase change heat exchange device according to claim 1, characterized in that: The inner side of the mounting frame (21) is fixedly connected to the outer wall of the tank body (1), the two ends of the screw rod (25) are rotatably connected to the inner wall of the support frame (23), and the inner side of the support assembly (26) is slidably connected to the outer wall of the straightening rod (210).

4. The box-type phase change heat exchange device according to claim 1, characterized in that: The two ends of the sliding rod (28) are slidably connected to the inner side of the mounting frame (21), the top of the mounting frame (21) is rotatably connected to the bottom of the PVT solar panel (20), and the PVT solar panel (20) is fixedly connected to the outer side of the electric heating body (8) through a transmission line.

5. The box-type phase-change heat transfer device according to claim 1, characterized in that: The support assembly (26) comprises a slider (261), the outer side of the slider (261) is fixedly connected to a transverse bracket (262), the outer side of the transverse bracket (262) is fixedly connected to a hollow guide rod (263), the outer wall of the hollow guide rod (263) is slidably connected to a sliding seat (266), and the top of the sliding seat (266) is fixedly connected to a support plate (267).

6. A box-type phase-change heat transfer device according to claim 5, characterized in that: The inner side of the sliding block (261) is threadedly connected to the outer wall of the screw rod (25), and the inner side of the transverse bracket (262) is slidably connected to the outer wall of the straightening rod (210).

7. The box-type phase-change heat transfer device according to claim 5, characterized in that: The inner side of the hollow guide rod (263) is fixedly connected to a tension spring (265), the outer side of the tension spring (265) is fixedly connected to a connecting plate (264), the outer side of the support plate (267) is rotatably connected to a boosting roller (268), and the top of the support plate (267) is rotatably connected to a limiting frame (269).

8. The box-type phase-change heat exchange device according to claim 7, characterized in that: The outer side of the connecting plate (264) is slidably connected to the inner side of the hollow guide rod (263), the outer side of the connecting plate (264) is fixedly connected to the outer side of the sliding seat (266), the outer side of the boosting roller (268) is in contact with the outer wall of the guide plate (22), the outer wall of the boosting roller (268) is in contact with the outer wall of the tank body (1), and the outer side of the limiting frame (269) is in contact with the outer wall of the connecting plate (264).

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