A centralized grid-connected device for outdoor multiple photovoltaic grid-connected cabinets

Abstract

The utility model discloses a centralized grid-connected device for multiple outdoor photovoltaic grid-connected cabinets, which relates to the technical field of grid-connected cabinets and includes multiple support frames connected end to end; the first support frame is connected to the outer wall of an external power distribution room by fasteners, and the support frame includes a lower support frame, the top of the lower support frame is fixedly connected with four side support columns, the tops of the side support columns are fixedly connected with a protective frame, the bottom of the inner side of the protective frame is fixedly connected with a grid-connected cabinet body, and the top of the inner side of the protective frame is connected with a suspension rod. The utility model can protect the mechanical energy of the grid-connected cabinet body by arranging a support frame for lifting and protecting the grid-connected cabinet body, and can use the support frame for docking to quickly connect to the grid when connected to the grid, and the grid-connected process can rely on the positioning assembly and the lock buckle to cooperate to achieve rapid merging, thereby improving the efficiency of grid connection; in addition, it can be quickly maintained or flexibly replaced when the external grid-connected cabinet is damaged, which greatly facilitates practical applications.

Description

Technical Field

[0001] The utility model relates to the technical field of grid-connected cabinets, and in particular to a centralized grid-connected device for outdoor multiple photovoltaic grid-connected cabinets. Background Art

[0002] A grid-connected cabinet refers to a device used in renewable energy systems such as photovoltaic power generation systems and wind power generation systems. It is used to bring multiple circuits together and connect them to the power grid. The grid-connected cabinet usually includes electrical components, protection devices, controllers, etc., which are used to manage and monitor the power output of the renewable energy system and connect it to the power grid.

[0003] In the prior art, the grid-connected cabinet and the grid-connected point are connected by a closed busbar bridge. The overhead part of the closed busbar bridge is fixed by a suspended hanging screw rod, and the two ends are protected by a shell. This method connects the grid-connected cabinet and the grid-connected point through a closed busbar bridge. The overhead part of the busbar bridge is fixed by a suspended hanging screw rod, and the two ends are protected by a shell to ensure a safe and reliable connection.

[0004] However, when there is no reserved space for the grid-connected cabinet in the distribution room and a grid-connected cabinet needs to be added, one or more grid-connected cabinets are usually placed outdoors. However, the outdoor environment has no protection, and the grid-connected cabinet and cable connector positions are usually not waterproof and cannot be directly exposed to the external environment. Therefore, protection needs to be set up. In actual situations, the number of grid-connected cabinets is usually variable and needs to be adjusted according to actual conditions. Therefore, the means of setting a fixed-size protective shell still cannot meet the actual use needs. It is necessary to propose a centralized grid-connected device that can be flexibly connected to the grid without being limited by the number of grid-connected cabinets. Utility Model Content

[0005] The purpose of the utility model is to provide a centralized grid-connected device for multiple outdoor photovoltaic grid-connected cabinets to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A centralized grid-connected device for multiple outdoor photovoltaic grid-connected cabinets comprises a plurality of support frames connected end to end; the first support frame is connected to the outer wall of an external power distribution room by fasteners, the support frame comprises a lower support frame, the top of the lower support frame is fixedly connected to four side support columns, the tops of the side support columns are fixedly connected to a protective frame, the bottom of the inner side of the protective frame is fixedly connected to a grid-connected cabinet body, the top of the inner side of the protective frame is connected to a suspension rod, the bottom of the suspension rod is hung with a mounting plate, the mounting plate is used to install a bus duct, and the top of the protective frame is fixedly connected to an inclined roof; one side of two side support columns is fixedly connected to an extension plate, one side of the other two side support columns are fixedly connected to a positioning frame, one side of the extension plate is fixedly connected to a lock buckle, a positioning assembly is arranged inside the positioning frame, and the positioning assembly is used to enable quick disassembly and assembly between the positioning frame and the lock buckle.

[0008] By adopting the above technical solution, a support frame for lifting and protecting the grid-connected cabinet body is provided, so that the mechanical energy of the grid-connected cabinet body can be protected, and the support frame can be used for docking and rapid grid-connection during grid-connection. The grid-connection process can rely on the cooperation of the positioning assembly and the lock to achieve rapid merging, thereby improving the efficiency of grid connection; in addition, when the external grid-connected cabinet is damaged, it can be quickly maintained or flexibly replaced.

[0009] A further improvement of the technical solution of the utility model is that the positioning assembly includes a pad slidably connected between the inner walls of the positioning frame, a valve stem is fixedly connected to one side of the pad, a strip groove is opened on one side of the positioning frame, the strip groove passes through one end face of the positioning frame, the valve stem extends to the outside of the positioning frame through the strip groove, an operating rod is fixedly connected to one side of the valve stem, and one end of the operating rod extends to the outside of the positioning frame through the strip groove.

[0010] By adopting the above technical solution and setting a positioning component, when connecting to the grid, the support frames where two adjacent grid-connected cabinet bodies are located can be quickly connected or removed by inserting the valve stem into the lock, thereby facilitating flexible grid-connected operations.

[0011] A further improvement of the technical solution of the utility model is that a spring is sleeved on the outside of the valve stem and inside the positioning frame, and a positioning buckle is fixedly connected to one end surface of the positioning frame, and the positioning buckle is used in conjunction with the operating rod.

[0012] By adopting the above technical solution, when the valve stem is inserted into the lock buckle, the operating rod is rotated so that the operating rod faces the positioning buckle. When the positioning buckle is released, the operating rod and the valve stem can be kept fixed under the elastic force of the spring.

[0013] A further improvement of the technical solution of the utility model is that three sides of the protective frame are provided with alignment grooves, the other side of the protective frame is fixedly connected with an alignment frame, and the inside of the alignment grooves located on the adjacent surface of the alignment frame is connected with a side plate by screws.

[0014] By adopting the above technical solution, the sealing of the connection parts can be improved to prevent water seepage by plugging the alignment frames and alignment grooves on two adjacent support frames; the alignment grooves that are connected to the external environment are connected with side panels by screws, which can be waterproof and dustproof, and can be quickly removed during maintenance.

[0015] A further improvement of the technical solution of the utility model is that a guide part is provided on one side of the top of the sloping roof, the height of the guide part close to the side wall of the sloping roof is higher than that close to the central position, and a guide plate is fixedly connected to the side of the top of the sloping roof away from the guide part.

[0016] By adopting the above technical solution, the connecting parts at the top of the two main bodies can be staggered, and the guide part contacts the inner wall of the guide plate at the top of the adjacent support frame, so that rainwater cannot penetrate into the cabinet from the gap between the two adjacent sloping roofs.

[0017] A further improvement of the technical solution of the utility model is that a plurality of universal wheels are installed at the bottom of the lower support frame, a plurality of screw rods are threadedly connected to the top of the lower support frame, the bottom of the screw rods extends to the bottom of the lower support frame and is rotatably connected to a base, and the top of the screw rods is fixedly connected to a turning handle.

[0018] By adopting the above technical solution, when moving, the handle is rotated to make the screw and the base move upward and leave the ground, so that the support frame can move smoothly; when the grid connection is completed, the handle can be rotated to make the screw move downward, and drive the base to move downward to contact the ground, so as to increase the friction between the support frame and the ground and prevent the support frame from moving.

[0019] A further improvement of the technical solution of the utility model is that the alignment groove located at the tail is also connected with a side plate by screws.

[0020] By adopting the above technical solution, the entire grid-connected system can be closed by installing the side panel in the rearmost alignment slot by screws, thereby preventing rainwater or dust from penetrating into the cabinet.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a centralized grid-connected device for multiple outdoor photovoltaic grid-connected cabinets. By arranging a support frame for lifting and protecting the grid-connected cabinet body, the mechanical energy of the grid-connected cabinet body can be protected, and the support frame can be used for docking and rapid grid-connection during grid-connection. The grid-connected process can rely on the cooperation of the positioning component and the lock to achieve rapid merging, thereby improving the efficiency of grid connection; in addition, when the external grid-connected cabinet is damaged, it can be quickly maintained or flexibly replaced, which greatly facilitates practical applications.

[0023] 2. The utility model provides a centralized grid-connected device for multiple outdoor photovoltaic grid-connected cabinets. By plugging the alignment frames and alignment grooves on two adjacent support frames, the sealing of the connection parts can be improved to prevent water seepage. The alignment grooves that are connected to the external environment are connected with side panels by screws, which can be waterproof and dustproof, and can be quickly removed during maintenance.

[0024] 3. The utility model provides a centralized grid-connected device for multiple outdoor photovoltaic grid-connected cabinets. By arranging a guide part and a guide plate used in conjunction on the sloping top, the connecting parts at the top of the two main bodies can be staggered, and the guide part contacts the inner wall of the guide plate on the top of the adjacent support frame, so that rainwater cannot penetrate into the cabinet from the gap between the two adjacent sloping tops. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the installation structure of the utility model when the side wall is hidden as a whole;

[0028] Figure 3 It is a schematic diagram of the partial structure of the support frame of the utility model;

[0029] Figure 4 It is a schematic diagram of the overall assembly structure of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the positioning frame of the utility model;

[0031] Figure 6 For the utility model Figure 2 Enlarged view of point A in the middle;

[0032] Figure 7 For the utility model Figure 2 Enlarged view of point B in the middle.

[0033] In the figure: 11, lower support frame; 12, side support column; 13, protective frame; 14, inclined top; 15, side plate; 21, grid cabinet body; 22, suspension rod; 23, mounting plate; 31, positioning frame; 32, extension plate; 33, strip groove; 34, pad; 35, valve stem; 36, spring; 37, positioning buckle; 38, operating lever; 39, lock; 41, universal wheel; 42, screw; 43, handle; 44, base; 51, alignment frame; 52, alignment groove; 61, guide part; 62, guide plate. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the embodiments:

[0035] Example 1

[0036] like Figure 1-7 As shown, the utility model provides an outdoor multiple photovoltaic grid-connected cabinet centralized grid-connected device, including a plurality of support frames connected end to end; the first support frame is connected to the outer wall of the external power distribution room by fasteners, the support frame includes a lower support frame 11, the top of the lower support frame 11 is fixedly connected with four side support columns 12, the tops of the side support columns 12 are fixedly connected with a protective frame 13, the bottom of the inner side of the protective frame 13 is fixedly connected with a grid-connected cabinet body 21, the top of the inner side of the protective frame 13 is connected with a suspension rod 22, the bottom of the suspension rod 22 is suspended with a mounting plate 23, the mounting plate 23 is used to install the bus duct, and the top of the protective frame 13 is fixedly connected with a slanted top 14; one side of two side support columns 12 is fixedly connected with an extension plate 32, and one side of the other two side support columns 12 are fixedly connected with a positioning frame 31, one side of the extension plate 32 is fixedly connected with a lock buckle 39, and a positioning component is arranged inside the positioning frame 31, and the positioning component is used to quickly disassemble and assemble the positioning frame 31 and the lock buckle 39.

[0037] In this embodiment, by providing a support frame for lifting and protecting the grid-connected cabinet body 21, the grid-connected cabinet body 21 can be mechanically protected, and the support frame can be used for docking and rapid grid-connection during grid-connection. The grid-connection process can rely on the cooperation of the positioning assembly and the lock 39 to achieve rapid merging, thereby improving the efficiency of grid connection; in addition, when the external grid-connected cabinet is damaged, it can be quickly maintained or flexibly replaced, which greatly facilitates practical applications.

[0038] Example 2

[0039] like Figure 2 and Figure 5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the positioning assembly includes a pad 34 slidably connected between the inner walls of the positioning frame 31, a valve stem 35 is fixedly connected to one side of the pad 34, a strip groove 33 is opened on one side of the positioning frame 31, the strip groove 33 passes through one end face of the positioning frame 31, the valve stem 35 extends to the outside of the positioning frame 31 through the strip groove 33, and an operating rod 38 is fixedly connected to one side of the valve stem 35, and one end of the operating rod 38 extends to the outside of the positioning frame 31 through the strip groove 33.

[0040] In this embodiment, by setting a positioning component, when connecting to the grid, the valve stem 35 can be inserted into the lock 39 so that the support frames where two adjacent grid-connected cabinet bodies 21 are located can be quickly connected or removed, thereby facilitating flexible grid-connected operations.

[0041] like Figure 5 and Figure 7As shown, preferably, a spring 36 is sleeved on the outside of the valve stem 35 and inside the positioning frame 31 , and a positioning buckle 37 is fixedly connected to one end surface of the positioning frame 31 , and the positioning buckle 37 is used in conjunction with an operating rod 38 .

[0042] In this embodiment, when the valve stem 35 is inserted into the lock buckle 39, the operating rod 38 is rotated so that the operating rod 38 is opposite to the positioning buckle 37. When the positioning buckle 37 is released, the elastic force of the spring 36 can keep the operating rod 38 and the valve stem 35 fixed.

[0043] like Figure 1 and Figure 3 As shown, preferably, three sides of the protective frame 13 are provided with alignment grooves 52, the other side of the protective frame 13 is fixedly connected with an alignment frame 51, and the inside of the alignment groove 52 located on the adjacent surface of the alignment frame 51 is connected with the side panel 15 by screws.

[0044] In this embodiment, by plugging the alignment frame 51 and the alignment groove 52 on two adjacent support frames, the sealing of the connection part can be improved to prevent water seepage; the side panel 15 is connected to the alignment groove 52 that is connected to the external environment by screws, which can be waterproof and dustproof, and can be quickly removed during maintenance.

[0045] Example 3

[0046] like Figure 2 and Figure 6 As shown, based on Example 2, the utility model provides a technical solution: preferably, a guide portion 61 is provided on one side of the top of the sloping roof 14, the height of the guide portion 61 close to the side wall of the sloping roof 14 is higher than that close to the central position, and a guide plate 62 is fixedly connected to the side of the top of the sloping roof 14 away from the guide portion 61.

[0047] In this embodiment, the connecting parts at the top of the two main bodies (the support frame and the overall structure installed thereon) can be staggered, and the guide part 61 contacts the inner wall of the guide plate 62 at the top of the adjacent support frame, so that rainwater cannot penetrate into the cabinet from the gap between the two adjacent sloping roofs 14.

[0048] like Figure 2 and Figure 3 As shown, preferably, a plurality of universal wheels 41 are installed at the bottom of the lower support frame 11, a plurality of screw rods 42 are threadedly connected to the top of the lower support frame 11, the bottom of the screw rods 42 extends to the bottom of the lower support frame 11 and is rotatably connected to a base 44, and the top of the screw rods 42 is fixedly connected to a turning handle 43.

[0049] In this embodiment, when moving, the screw rod 42 and the base 44 can be moved upward and off the ground by rotating the handle 43, so as to avoid the base 44 hindering the movement of the support frame; when the grid connection is completed, the screw rod 42 can be moved downward by rotating the handle 43, and the base 44 can be driven to move downward to contact the ground, so as to increase the friction between the support frame and the ground and avoid the instability of the support frame.

[0050] like Figure 1 As shown, preferably, the side plate 15 is also connected to the alignment groove 52 at the tail by screws.

[0051] In this embodiment, the entire grid-connected system can be sealed by installing the side plate 15 in the rearmost alignment groove 52 by screws, thereby preventing rainwater or dust from penetrating into the cabinet.

[0052] The following is a detailed description of the working principle of the centralized grid-connected device for multiple outdoor photovoltaic grid-connected cabinets.

[0053] like Figure 1 - Figure 7 As shown, when connected to the grid, a through groove is opened on one side wall of the power distribution room so that the busbar bridge in the room can be extended to the outside, the first support frame is pushed toward the power distribution room and is close to the outer wall of the power distribution room, and the first support frame is connected by fasteners on the side with the through groove, and the busbar bridge inside the support frame is connected to the busbar bridge extending from the room. After the structure and busbar of the first support frame are connected, the subsequent grid connection of the grid-connected cabinet can be started;

[0054] Continue to push the second support frame toward the tail of the first support frame, and the operating rod 38 of the positioning assembly on the second support frame before contact is no longer in the positioning buckle 37 (in the subsequent merging process, the operating rod 38 of the unmerged support frame is no longer in the positioning buckle 37), and then under the action of the spring 36, the pad 34 and the valve stem 35 are both in a higher position and disengaged from the lock buckle 39;

[0055] During the docking process of two support frames, the alignment frame 51 on the unmerged support frame is inserted into the alignment groove 52 on the previous support frame, and the guide part 61 on its top is in contact with the inner wall of the guide plate 62 on the top of the adjacent support frame. When the two are pushed in close contact, the operating rod 38 can be pulled down to insert the valve stem 35 into the lock buckle 39, and then the operating rod 38 is rotated so that the operating rod 38 is opposite to the positioning buckle 37. When the positioning buckle 37 is released, the elastic force of the spring 36 can keep the operating rod 38 and the valve stem 35 fixed, so that the two grid-connected cabinet bodies 21 can be quickly merged, and then the corresponding cables can be connected to complete the grid connection;

[0056] The entire grid-connected system can be closed by installing the side panel 15 in the rearmost alignment groove 52 by screws, so as to prevent rainwater or dust from penetrating into the cabinet. After the grid connection is completed, the handle 43 can be rotated to make the screw rod 42 move downward, and drive the base 44 to move downward to contact the ground, so as to increase the friction between the support frame and the ground and avoid the instability of the support frame. Each side panel 15 is installed in the alignment groove 52 by screws, and the screw head position of the screw is located on the outside of the support frame, which can be conveniently removed when maintenance is needed to facilitate maintenance work.

[0057] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A centralized grid-connected device for multiple outdoor photovoltaic grid-connected cabinets, comprising a plurality of support frames connected end to end; characterized in that: The first support frame is connected to the outer wall of the external power distribution room by fasteners, the support frame comprises a lower support frame (11), the top of the lower support frame (11) is fixedly connected to four side support columns (12), the tops of the side support columns (12) are fixedly connected to a protection frame (13), the bottom of the inner side of the protection frame (13) is fixedly connected to a grid cabinet body (21), the top of the inner side of the protection frame (13) is connected to a suspension rod (22), the bottom of the suspension rod (22) is suspended with a mounting plate (23), the mounting plate (23) is used to install a bus duct, and the top of the protection frame (13) is fixedly connected to a slanted top (14); One side of two of the side support columns (12) is fixedly connected to an extension plate (32), one side of the other two side support columns (12) is fixedly connected to a positioning frame (31), one side of the extension plate (32) is fixedly connected to a lock buckle (39), and a positioning component is arranged inside the positioning frame (31), and the positioning component is used to quickly disassemble and assemble the positioning frame (31) and the lock buckle (39).

2. According to claim 1, a centralized grid-connected device for outdoor multiple photovoltaic grid-connected cabinets is characterized by: The positioning assembly comprises a pad (34) slidably connected between the inner walls of the positioning frame (31); a valve stem (35) is fixedly connected to one side of the pad (34); a strip groove (33) is provided on one side of the positioning frame (31); the strip groove (33) passes through an end surface of the positioning frame (31); the valve stem (35) extends to the outside of the positioning frame (31) through the strip groove (33); an operating rod (38) is fixedly connected to one side of the valve stem (35); one end of the operating rod (38) extends to the outside of the positioning frame (31) through the strip groove (33).

3. According to claim 2, a centralized grid-connected device for outdoor multiple photovoltaic grid-connected cabinets is characterized by: A spring (36) is sleeved on the outside of the valve stem (35) and inside the positioning frame (31); a positioning buckle (37) is fixedly connected to one end surface of the positioning frame (31); and the positioning buckle (37) is used in conjunction with an operating rod (38).

4. According to claim 3, a centralized grid-connected device for outdoor multiple photovoltaic grid-connected cabinets is characterized by: Three side surfaces of the protection frame (13) are provided with alignment grooves (52); the other side surface of the protection frame (13) is fixedly connected with an alignment frame (51); and the inside of the alignment groove (52) located on the adjacent surface of the alignment frame (51) is connected with a side plate (15) via screws.

5. According to claim 4, a centralized grid-connected device for outdoor multiple photovoltaic grid-connected cabinets is characterized by: A flow guide portion (61) is provided on one side of the top of the inclined roof (14); the height of the flow guide portion (61) close to the side wall of the inclined roof (14) is higher than that close to the center; and a flow guide plate (62) is fixedly connected to the side of the top of the inclined roof (14) away from the flow guide portion (61).

6. The centralized grid-connected device for outdoor multiple photovoltaic grid-connected cabinets according to claim 5, characterized in that: A plurality of universal wheels (41) are installed at the bottom of the lower support frame (11); a plurality of screw rods (42) are threadedly connected to the top of the lower support frame (11); the bottom of the screw rods (42) extends to the bottom of the lower support frame (11) and is rotatably connected to a base (44); and the top of the screw rods (42) is fixedly connected to a turning handle (43).

7. The centralized grid-connected device for outdoor multiple photovoltaic grid-connected cabinets according to claim 6, characterized in that: The alignment groove (52) at the tail is also connected to a side plate (15) via screws.

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