Inverter for distributed photovoltaic power station

Abstract

The utility model discloses an inverter for a distributed photovoltaic power station, which relates to the technical field of photovoltaic power generation and comprises a hanging frame, fixing parts are fixedly mounted at the upper and lower ends of two sides of the hanging frame, heat dissipation mechanisms are fixedly mounted at the upper and lower ends of the hanging frame, a substrate is fixedly mounted at the lower end of the front surface of the hanging frame, and the substrate is fixedly mounted on the base plate. And a mounting mechanism is fixedly mounted in the middle of the base plate. With the adoption of the structure, during use, the insertion rod is inserted into the sleeve, the regular hexagon on the inner sides of the insertion rod and the sleeve can assist in clamping and starting the heat dissipation fan, air blows and dissipates heat for the interior of the inverter body through the heat dissipation window and the dustproof net, the dustproof net can filter dust, so that the device has strong dustproof performance, and the sleeve is matched with the insertion rod to drive the brush plate to rotate; the dustproof net is brushed and cleaned, so that the device is dustproof, dust blockage is avoided, the overall heat dissipation performance is high and stable, the use stability and the service life of the inverter body can be remarkably improved, and long-time good operation of the inverter body can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic power generation, and particularly relates to an inverter for a distributed photovoltaic power station. Background Technique

[0002] Photovoltaic self-generation and power selling refers to the behavior of individuals or enterprises producing electric energy by themselves through the use of photovoltaic power generation equipment and selling the surplus electric energy exceeding their own needs to the power grid or other users. In a distributed photovoltaic power generation system, users can install photovoltaic modules on their own sites (such as rooftops, courtyards, etc.) to convert solar energy into electric energy for their own use. If the generated electric energy is more than their own needs, users can use a grid-connected inverter to connect the surplus electric energy to the power grid and sell it to the power company or other users with electricity demand;

[0003] In the power generation process of photovoltaic self-generation and power selling, the inverter plays a very crucial role. Its primary function is to convert the direct current generated by the photovoltaic panel into alternating current. After all, whether it is connected to the power grid or used for daily electrical equipment, alternating current is required. At the same time, the inverter can also stably adjust the voltage and frequency of the output alternating current to meet the standards of the power grid, ensuring the power quality and the stable operation of the power grid. In addition, it also has the function of maximum power point tracking, which can track the maximum power point of the photovoltaic panel in real time and accurately, promoting the photovoltaic panel to output electric energy with the highest efficiency and greatly improving the power generation efficiency;

[0004] Chinese Patent with the publication number of "CN214177164U" discloses a wall-mounted photovoltaic inverter, which includes a mounting plate, and a radiator is arranged between the two side surfaces of the mounting plate; connection seats are respectively arranged at both ends of the bottom of the mounting plate; a guide rod is fixed between the two connection seats; connecting rods are respectively sleeved on the circumferential surfaces at both ends of the guide rod; a sleeve rod is sleeved at the end of the connecting rod; a photovoltaic inverter body is arranged between the tops of the two sleeve rods; a U-shaped sleeve inserted into the photovoltaic inverter body is arranged on one surface of the mounting plate and at the bottom of the radiator; a rain shield is inserted into the mounting plate through a second insertion rod. The utility model has strong stability when the photovoltaic inverter is mounted on the side wall, and the first insertion rod at the end of the sleeve rod is inserted into the bottom of the photovoltaic inverter. Moreover, the distance between the connecting rod and the mounting plate and the telescopic length between the connecting rod and the sleeve rod can be adjusted to adapt to the wall-mounted installation of photovoltaic inverters of different models and sizes, and the versatility is relatively high;

[0005] However, although the above device achieves good heat dissipation performance by using air cooling, during the specific application process, there is a lack of a dust-proof structure during heat dissipation, and dust is extremely likely to enter the interior of the entire inverter or block the external dust-proof net, resulting in a decline in its heat dissipation performance. At the same time, when installing this photovoltaic inverter, it needs to be assisted by bolts for hanging installation. When it is necessary to remove the photovoltaic inverter from the hanging structure, it is rather inconvenient. Obviously, most of these hanging-mounted photovoltaic inverters are installed at relatively high positions. When in use, it is necessary to climb to the high hanging position for disassembly and assembly operations. This design that is not convenient for quick disassembly and assembly obviously requires people to stay at a relatively high climbing position for a long time for disassembly and assembly. Therefore, it is extremely important to improve its dust-proof performance and disassembly convenience. So, it is necessary to improve the existing technical means. Summary of the Invention

[0006] Aiming at the problems mentioned in the background technology, the purpose of the present invention is to provide an inverter for a distributed photovoltaic power generation station to solve the problems proposed in the background technology.

[0007] The above technical purpose of the present invention is achieved through the following technical solutions:

[0008] An inverter for a distributed photovoltaic power generation station includes a hanging rack. At both the upper and lower ends on both sides of the hanging rack, fixing parts are fixedly installed. At the upper and lower ends of the hanging rack, heat dissipation mechanisms are fixedly installed. At the lower end of the front surface of the hanging rack, a substrate is fixedly installed. In the middle of the substrate, an installation mechanism is fixedly installed. On the top of the substrate, an inverter body is placed. The inverter body is installed on the top of the substrate through the installation mechanism. A rain shelter is fixedly installed on the top of the substrate;

[0009] The installation mechanism includes a bottom rail. The bottom rail is fixedly installed in the middle of the substrate. A lead screw is rotatably connected inside the bottom rail. The thread directions of both ends of the lead screw are opposite. Both ends of the lead screw are threadedly connected with sliders. The sliders are slidably connected to both ends inside the bottom rail. One end of the lead screw penetrates through the bottom rail and is fixedly connected with a knob handle. On the inner side of the upper end of the slider, a clamping plate is fixedly installed.

[0010] As a preferred technical solution, the fixing part is L-shaped, and an installation hole is opened at the outer end of the fixing part. The installation hole is a countersunk hole.

[0011] As a preferred technical solution, the top view shape of the clamping plate is L-shaped, and anti-slip bumps are fixedly connected at equal intervals on the inner side of the clamping plate.

[0012] As a preferred technical solution, a limiting screw is threadedly connected to the upper end on one side inside the bottom rail, and the end of the limiting screw penetrates through the bottom rail and is in fit connection with the inner side of the knob handle.

[0013] As a preferred technical solution, the surface of the button handle is provided with limiting holes arranged in a circular shape at equal intervals, the end of the limiting screw is inserted into the inner side of the limiting hole, and the limiting screw is configured as a hand-tightening screw.

[0014] As an optimal technical solution, the heat dissipation mechanism includes a heat dissipation mesh cover and a heat dissipation window. The heat dissipation window is opened at the upper and lower ends of the back side of the inverter body. A dust screen is fixedly installed inside the heat dissipation window. The heat dissipation mesh cover is fixedly installed at the upper and lower ends of the bracket. A brush plate is rotatably connected to the middle of the back side of the heat dissipation mesh cover at equal intervals. The front side of the brush plate is fitted and connected to the filter screen in the heat dissipation window. A sleeve is fixedly installed on the back side of the brush plate. A cooling fan is rotatably connected to the inner side of the heat dissipation mesh cover. A plug rod is fixedly installed on the front side of the cooling fan, and the end of the plug rod is inserted into the inner side of the sleeve.

[0015] As a preferred technical solution, the cross-sectional shape of the insertion rod and the inner cross-sectional shape of the sleeve are both regular hexagonal, and the overall cross-sectional shape of the front end of the insertion rod is an isosceles trapezoid.

[0016] In summary, the utility model mainly has the following beneficial effects:

[0017] First, during use, insert the plug into the sleeve, and the regular hexagons on the inside of the two can assist in the connection, start the cooling fan, and the air will be blown through the heat dissipation window and the dustproof net to dissipate heat inside the inverter body. The dustproof net can filter dust to make the device highly dustproof, and the sleeve and the plug can drive the brush plate to rotate to clean the dustproof net, which makes the device dustproof and avoids dust clogging. The overall heat dissipation performance is strong and stable, which can significantly improve the stability and life of the inverter body and ensure its long-term good operation;

[0018] Second, when the installation mechanism is in use, install the inverter body, place it on the top of the base plate, twist the button handle to rotate the screw rod, drive the slider to slide on the inside of the bottom rail, and then let the slider drive the clamping plate to move, so as to achieve the clamping and positioning of the inverter body. The L-shaped clamping plate can prevent its front side from falling off, and can be installed stably. After installation, twist the limit screw to insert it into the limit hole, and limit each other to fix the button handle, and then lock the screw rod, stably fix the slider and the clamping plate, and ensure that the entire inverter body is stably installed. When disassembling, loosen the limit screw to disengage it from the limit hole, and then twist the button handle to separate the slider and the clamping plate, and then quickly dismantle it. In this way, the device can quickly disassemble and assemble the inverter body, reduce the inspection and maintenance time, and facilitate rapid inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the installation mechanism of the utility model when viewed from above;

[0021] Figure 3 is a schematic top view of the installation mechanism of the present utility model;

[0022] Figure 4 is a schematic side view of the heat dissipation fan and the brush plate of the present utility model;

[0023] Figure 5 is a schematic side view of the other side of the heat dissipation fan and the brush plate of the present utility model.

[0024] Reference numerals: 1, hanging bracket; 2, fixing member; 3, heat dissipation mechanism; 31, heat dissipation mesh cover; 32, heat dissipation window; 33, dust-proof net; 34, brush plate; 35, sleeve; 36, heat dissipation fan; 37, insertion rod; 4, substrate; 5, installation mechanism; 51, bottom rail; 52, lead screw; 53, slider; 54, knob handle; 55, clamping plate; 56, anti-slip convex points; 57, limit screw; 58, limit hole; 6, inverter body; 7, rain shelter; 8, installation hole. Detailed implementation manners

[0025] Embodiment

[0026] Referring to Figures 1 to 5 , the inverter for a distributed photovoltaic power generation station described in this embodiment includes a hanging bracket 1. Fixed members 2 are fixedly installed at the upper and lower ends on both sides of the hanging bracket 1. Heat dissipation mechanisms 3 are fixedly installed at the upper and lower ends of the hanging bracket 1. A substrate 4 is fixedly installed at the lower end of the front surface of the hanging bracket 1. An installation mechanism 5 is fixedly installed in the middle of the substrate 4. An inverter body 6 is placed on the top of the substrate 4. The inverter body 6 is installed on the top of the substrate 4 through the installation mechanism 5. A rain shelter 7 is fixedly installed on the top of the substrate 4;

[0027] The installation mechanism 5 includes a bottom rail 51. The bottom rail 51 is fixedly installed in the middle of the substrate 4. A lead screw 52 is rotatably connected inside the bottom rail 51. The thread directions at both ends of the lead screw 52 are opposite. Both ends of the lead screw 52 are threadedly connected with sliders 53. The sliders 53 are slidably connected to both ends inside the bottom rail 51. One end of the lead screw 52 penetrates through the bottom rail 51 and is fixedly connected with a knob handle 54. Clamping plates 55 are fixedly installed on the inner sides of the upper ends of the sliders 53. The fixing members 2 at the upper and lower ends on both sides of the hanging bracket 1 ensure the stability of the overall installation. The heat dissipation mechanisms 3 at the upper and lower ends can effectively dissipate heat for the inverter body 6, and have good dust-proof effect, extending its service life. The installation mechanism 5 on the lower end of the front surface of the substrate 4, through the cooperation of the lead screw 52, sliders 53 and clamping plates 55 inside the bottom rail 51, can install and disassemble the inverter body 6 stably and quickly, reducing the maintenance time, being convenient and fast. The rain shelter 7 on the top of the substrate 4 plays a protective role. In short, this inverter performs well in terms of heat dissipation, convenience of installation and disassembly, protection, etc., ensuring its stable and reliable operation.

[0028] refer to Figures 2 - 3 The fixing part 2 is arranged in an L shape, and a mounting hole 8 is opened at the outer end of the fixing part 2, and the mounting hole 8 is arranged as a countersunk hole. The fixing part 2 of the inverter for the distributed photovoltaic power station is arranged in an L shape, which makes its structure more stable and can better bear and support other components, and the mounting hole 8 opened at the outer end is a countersunk hole. The advantage of this design is that on the one hand, it can facilitate the installation and fixing operations, making the installation process more convenient; on the other hand, the countersunk hole can make the surface of the fixing part 2 smoother and more beautiful after installation, and there will be no protruding parts affecting the overall appearance and use. At the same time, it can also reduce the scratches or damages that may be caused by the protruding parts, further improving the practicality and reliability of the device.

[0029] refer to Figures 2 - 3 The top view shape of the clamping plate 55 is L-shaped, and the inner side of the clamping plate 55 is fixedly connected with anti-skid protrusions 56 at equal intervals. The top view shape of the clamping plate 55 in the inverter is L-shaped, which has obvious advantages. This can effectively prevent the inverter body 6 from sliding off the front side of the substrate 4, thereby enhancing the stability of the installation of the inverter body 6; and the anti-skid protrusions 56 fixedly connected at equal intervals on the inner side of the clamping plate 55 further increase the friction between the inverter body 6 and the inverter body 6, making the inverter body 6 more stable and reliable when clamped, and not prone to displacement or shaking, thereby ensuring the safety and stability of the inverter during operation, and ensuring its normal operation even in some more complex environments.

[0030] refer to Figures 2 - 3 The upper end of one side of the bottom rail 51 is threadedly connected to a limiting screw 57, and the end of the limiting screw 57 passes through the bottom rail 51 and is fitted and connected to the inner side of the button handle 54. The limiting screw 57 in the bottom rail 51 is threadedly connected to the bottom rail 51, and its position state can be flexibly adjusted. When it is fitted and connected to the inner side of the button handle 54, the button handle 54 can be effectively limited and fixed, thereby ensuring that the screw rod 52 will not rotate at will, thereby ensuring the stability of the slider 53 and the clamping plate 55 on the inverter body 6, and avoiding problems such as loose installation due to accidental loosening. At the same time, this limiting method is simple, direct and reliable, easy to operate, and can quickly lock and unlock the installation mechanism 5 when needed, thereby enhancing the convenience and safety of the entire device during use, so that the inverter body 6 can maintain good stability and reliability whether in the installation state or the working state.

[0031] refer to Figure 3, the surface of the button handle 54 is provided with limiting holes 58 arranged in an equidistant circular ring shape. The end of the limiting screw 57 is inserted into the inner side of the limiting hole 58. The limiting screw 57 is set as a hand-tightening screw. The limiting holes 58 arranged in an equidistant circular ring shape on the surface of the button handle 54 cooperate with the hand-tightening limiting screw 57, making the fixing operation of the button handle 54 very convenient and flexible. It can be quickly locked or unlocked according to actual needs. The hand-tightening screw can be operated without the aid of tools, greatly improving the convenience of use. When the end of the limiting screw 57 is inserted into the inner side of the limiting hole 58, the button handle 54 and the lead screw 52 can be firmly locked, ensuring the stability of the installation mechanism 5 during the working state, making the installation of the inverter body 6 more reliable and not easily loosening. This ingenious design not only meets the requirements of quick disassembly and assembly but also guarantees the stability after installation.

[0032] Reference Figures 2 - 5 , the heat dissipation mechanism 3 includes a heat dissipation mesh cover 31 and heat dissipation windows 32. The heat dissipation windows 32 are opened at the upper and lower ends of the back surface of the inverter body 6. A dust-proof net 33 is fixedly installed inside the heat dissipation windows 32. The heat dissipation mesh cover 31 is fixedly installed at the upper and lower ends of the hanging rack 1. Brush plates 34 are rotatably connected at equal intervals in the middle of the back surface of the heat dissipation mesh cover 31. The front side of the brush plates 34 is in fit connection with the filter screen inside the heat dissipation windows 32. A sleeve 35 is fixedly installed on the back surface of the brush plates 34. A heat dissipation fan 36 is rotatably connected inside the heat dissipation mesh cover 31. A plug rod 37 is fixedly installed on the front surface of the heat dissipation fan 36. The end of the plug rod 37 is inserted into the inner side of the sleeve 35. The cross-sectional shape of the plug rod 37 and the inner cross-sectional shape of the sleeve 35 are both set as regular hexagons. The overall cross-sectional shape of the front end of the plug rod 37 is set as an isosceles trapezoid. The setting of the heat dissipation windows 32 enables effective heat exchange between the inside of the inverter body 6 and the outside world to achieve heat dissipation; the internal dust-proof net 33 can effectively prevent dust from entering, keep the inside clean, and extend the service life of the equipment. The heat dissipation mesh cover 31 not only plays a protective role, but the heat dissipation fan 36 inside it can accelerate air flow and further improve the heat dissipation effect. The brush plates 34 are in fit connection with the dust-proof net 33, which can clean the dust-proof net 33 to prevent dust blockage. The cooperation between the sleeve 35 and the plug rod 37 realizes the function of driving the brush plates 34 to rotate, and the regular hexagon design ensures the stability and accuracy of the transmission. The isosceles trapezoid design at the end of the plug rod 37 facilitates the insertion operation and makes the operation of the whole mechanism smoother. The design of this heat dissipation mechanism 3 not only ensures good heat dissipation performance of the inverter body 6 but also can effectively prevent dust and automatically clean the dust-proof net 33.

[0033] Principle of use and advantages: By setting up the heat dissipation mechanism 3, during the use of the device, the plug rod 37 can be inserted into the inside of the sleeve 35. Both the inner sides of the plug rod 37 and the sleeve 35 are regular hexagons. At this time, the plug rod 37 and the sleeve 35 can be clamped to assist. Then, by starting the operation of the heat dissipation fan 36, the air generated by the heat dissipation fan 36 is used to blow air into the inside of the inverter body 6 through the heat dissipation window 32 and the dust-proof net 33 inside it for heat dissipation. During the heat dissipation process, the setting of the dust-proof net 33 can filter the dust in the air, enabling the device to have a strong dust-proof function. The cooperation of the sleeve 35 and the plug rod 37 can assist in driving the brush plate 34 to rotate. When the brush plate 34 rotates, it can assist in brushing and cleaning the dust-proof net 33. It can be seen that on the one hand, the device can have a strong dust-proof performance, and on the other hand, it can prevent the dust-proof net 33 from being blocked by dust. The overall heat dissipation performance is relatively stable, which can significantly improve the stability and service life of the inverter body 6. The end cross-section of the plug rod 37 is designed as an isosceles trapezoid, which is convenient for the plug rod 37 to be inserted into the inside of the sleeve 35;

[0034] By setting up the installation mechanism 5, during the use of the device, when the inverter body 6 needs to be installed, the inverter body 6 can be placed on the top of the substrate 4. By turning the knob 54, it can assist in driving the screw rod 52 to rotate. By the rotation of the screw rod 52, the slider 53 can be driven to slide inside the bottom rail 51. By the sliding of the bottom rail 51, it can assist in driving the slider 53 to drive the clamping plate 55 to move back and forth. When the clamping plate 55 moves, it can clamp and position the inverter body 6. When assisting in clamping the inverter body 6, since the clamping plate 55 is L-shaped, it can prevent the inverter body 6 from falling off from the front side of the substrate 4. It can be seen that the device as a whole can stably install the inverter body 6. After the installation of the inverter body 6 is completed, the limit screw 57 can be inserted into the inside of the limit hole 58. Through the mutual limitation of the limit hole 58 and the limit screw 57, it can assist in clamping and fixing the knob 54. When the knob 54 is fixed, the screw rod 52 can be locked. When the screw rod 52 is locked, the slider 53 and the clamping plate 55 can be stably fixed, and the entire inverter body 6 can be stably installed. When the inverter body 6 needs to be disassembled, only by loosening the limit screw 57 from the limit hole 58, through the separation of the limit screw 57 and the limit hole 58, the knob 54 can be turned again to adjust the separation of the slider 53 and the clamping plate 55, so that the inverter body 6 can be quickly removed. It can be seen that the device as a whole can quickly disassemble and assemble the entire inverter body 6, reducing the time for maintenance and repair, and facilitating quick maintenance and repair.

Claims

1. Inverter for distributed photovoltaic power generation station, including a hanging rack, characterized in that: fixed parts are fixedly installed at the upper and lower ends on both sides of the hanging rack, heat dissipation mechanisms are fixedly installed at the upper and lower ends of the hanging rack, a substrate is fixedly installed at the lower end of the front surface of the hanging rack, an installation mechanism is fixedly installed in the middle of the substrate, an inverter body is placed on the top of the substrate, the inverter body is installed on the top of the substrate through the installation mechanism, and a rain shelter is fixedly installed on the top of the substrate; The installation mechanism includes a bottom rail, the bottom rail is fixedly installed in the middle of the substrate, a lead screw is rotatably connected inside the bottom rail, the thread directions at both ends of the lead screw are opposite, both ends of the lead screw are threadedly connected with sliders, the sliders are slidably connected to both ends inside the bottom rail, one end of the lead screw penetrates through the bottom rail and is fixedly connected with a knob handle, and clamping plates are fixedly installed on the inner sides of the upper ends of the sliders.

2. The inverter for a distributed photovoltaic power generation station according to claim 1, wherein: The fixed part is arranged in an L shape, and an installation hole is opened at the outer end of the fixed part, and the installation hole is a countersunk hole.

3. The inverter for a distributed photovoltaic power generation station according to claim 1, characterized in that: The clamping plate is arranged in an L shape in a top view, and anti-slip bumps are fixedly connected at equal intervals on the inner side of the clamping plate.

4. The inverter for a distributed photovoltaic power generation station according to claim 1, wherein: A limit screw is threadedly connected to the upper end of one side inside the bottom rail, and the end of the limit screw penetrates through the bottom rail and is in fit connection with the inner side of the knob handle.

5. The inverter for a distributed photovoltaic power generation station according to claim 4, characterized in that: Limit holes are arranged in a circular ring at equal intervals on the surface of the knob handle, the end of the limit screw is inserted into the inner side of the limit hole, and the limit screw is a hand-tightening screw.

6. The inverter for a distributed photovoltaic power generation station according to claim 1, wherein: The heat dissipation mechanism includes a heat dissipation mesh cover and heat dissipation windows, the heat dissipation windows are opened at the upper and lower ends of the back surface of the inverter body, a dust-proof net is fixedly installed inside the heat dissipation windows, the heat dissipation mesh cover is fixedly installed at the upper and lower ends of the hanging rack, brush plates are rotatably connected at equal intervals in the middle of the back surface of the heat dissipation mesh cover, the front side of the brush plates is in fit connection with the filter screen inside the heat dissipation windows, sleeves are fixedly installed on the back surfaces of the brush plates, a heat dissipation fan is rotatably connected inside the heat dissipation mesh cover, an insertion rod is fixedly installed on the front surface of the heat dissipation fan, and the end of the insertion rod is inserted into the inner side of the sleeve.

7. The inverter for a distributed photovoltaic power station according to claim 6, characterized in that: The cross-sectional shape of the insertion rod and the inner cross-sectional shape of the sleeve are both arranged in a regular hexagon, and the overall cross-sectional shape of the front end of the insertion rod is arranged in an isosceles trapezoid.

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