A coupler for connecting a distributed energy source to a power distribution network

Abstract

The utility model discloses a kind of couplings of distributed energy access power distribution network, including protective shell, it is characterized by: the top of protective shell is equipped with cover plate, the left and right sides of protective shell are equipped with plug, the inside of protective shell is provided with electrical module, electrical module is connected with plug;The lower part of protective shell is provided with fixed plate;Protective shell and fixed plate have gap between;Distributed energy access power distribution network's coupler further includes quick-release structure for installing cover plate on protective shell;Heat sink device is installed on protective shell;Electrical module in protective shell is cooled by heat sink device.The utility model is detached and installed to cover plate by quick-release structure, it is easy and fast to operate and shorten the maintenance time;The utility model is cooled to electrical module by heat sink device and auxiliary heat sink device, prevent the temperature of electrical module inside protective shell too high, affect normal work.

Description

Technical Field

[0001] This utility model relates to the field of power grid coupler technology, specifically a coupler for distributed energy access to a distribution network. Background Technology

[0002] Distributed energy sources such as solar photovoltaic power generation systems and small-scale wind power generation systems have been widely promoted and applied due to their clean, efficient, and flexible characteristics. In the process of connecting distributed energy sources to the power distribution network, the coupler, as a key connection device, undertakes important functions such as power transmission, power regulation, and fault isolation.

[0003] Traditional couplers often use bolts to fix their covers and protective shells. When it is necessary to inspect or replace internal electrical modules or components, special tools are required to remove the bolts one by one. This operation is complicated and time-consuming. Especially in some emergency repair scenarios, it is impossible to quickly restore the normal operation of the coupler, which may cause the distributed energy generation system to shut down and cause economic losses to users.

[0004] In terms of heat dissipation performance, since the electrical modules inside the coupler continuously generate heat during operation, most traditional couplers rely solely on the natural heat dissipation of the protective shell, resulting in low heat dissipation efficiency.

[0005] Therefore, in order to address the problems existing in the above-mentioned prior art, it is necessary to develop a coupler for distributed energy access to the power distribution network that has a quick disassembly function and efficient heat dissipation performance. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a coupler for distributed energy access to the power distribution network, which solves the problem of inconvenient disassembly and maintenance during actual use.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a coupler for distributed energy access to a power distribution network, comprising a protective shell, characterized in that: a cover plate is installed on the top of the protective shell, plugs are installed on both the left and right sides of the protective shell, an electrical module is provided inside the protective shell, and the electrical module is connected to the plugs; a fixing plate is provided at the bottom of the protective shell; and a gap exists between the protective shell and the fixing plate.

[0008] The coupler for connecting distributed energy to the distribution network also includes a quick-release structure for mounting the cover plate on the protective shell; and a heat dissipation device mounted on the protective shell.

[0009] The electrical modules inside the protective casing are cooled by a heat dissipation device.

[0010] Furthermore, the heat dissipation device includes a fan, a dust filter, and a mounting frame:

[0011] The fan is mounted on the side wall of the protective housing;

[0012] The mounting frame is fixed to the outer wall of the protective shell and located outside the dustproof net, which is installed on the mounting frame.

[0013] Furthermore, it also includes auxiliary heat dissipation devices; two auxiliary heat dissipation devices are respectively disposed on the bottom wall of the cover plate and the protective shell; the auxiliary heat dissipation device disposed on the cover plate includes a heat-conducting plate and heat dissipation fins:

[0014] The heat-conducting plate is snapped onto the cover plate and located above the electrical module;

[0015] The heat dissipation fins are inserted into the top of the heat-conducting plate;

[0016] The electrical module is cooled by the heat-conducting plate and heat sink fins.

[0017] Furthermore, the quick-release structure includes a limiting block and a rotating component:

[0018] The limiting block is fixedly connected to the inner wall of the protective shell near the cover plate; a rectangular through hole is opened on the limiting block along the vertical direction;

[0019] The rotating component includes an adjusting block, a rotating rod, and a locking block connected in sequence from top to bottom;

[0020] The rotating rod is cylindrical, and its upper end is fixedly connected to the adjusting block;

[0021] The upper part of the rotating rod is inserted into the cover plate and can rotate relative to the cover plate under the action of the adjusting block; the lower end of the rotating rod passes through the adjusting block and is fixedly connected to the locking block.

[0022] The locking block has a cuboid structure, and its size is smaller than the size of the rectangular through hole on the limiting block.

[0023] Furthermore, it also includes a protective structure disposed between the fixed plate and the bottom surface of the protective shell; the protective structure includes a plug and a rubber post:

[0024] There are multiple insertion rods, which are vertically fixed to the top of the fixing plate;

[0025] The top of the rubber column is fixedly connected to the protective shell, and the bottom of the rubber column has a socket, into which the top of the plug is inserted.

[0026] Beneficial effects

[0027] This utility model achieves rapid disassembly and installation of the cover plate through a quick-release structure, improving maintenance efficiency. By cooperating with the limiting block, the locking block and the adjusting block, when disassembling the cover plate, the adjusting block drives the rotating rod to rotate, so that the locking block can be moved out of the limiting block, and the cover plate can be quickly disassembled. Conversely, when installing, the rotating rod and the locking block are inserted into the locking block, and then the adjusting block is rotated.

[0028] This invention uses a heat dissipation device and an auxiliary heat dissipation device to dissipate heat from the electrical module, which can effectively control the temperature inside the protective shell and ensure the normal operation of the electrical module. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the appearance of the present utility model;

[0031] Figure 3 for Figure 1 A structural diagram of the protective shell, cover plate, and limiting block;

[0032] Figure 4 for Figure 1 A schematic diagram of the structure of the fixing plate, the insert rod, and the rubber column.

[0033] In the diagram: 1. Protective shell; 11. Cover plate; 12. Plug; 13. Electrical module; 2. Quick-release structure; 21. Limiting block; 22. Rotating rod; 23. Locking block; 24. Adjusting block; 3. Heat dissipation device; 31. Fan; 32. Dustproof net; 33. Mounting frame; 34. Auxiliary heat dissipation device; 341. Heat conduction plate; 342. Heat dissipation fins; 4. Protective structure; 41. Fixing plate; 42. Insert rod; 43. Rubber column. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Depend on Figure 1-4It is known that a coupler for distributed energy access to a power distribution network includes a box-shaped protective shell 1 without a top cover. A cover plate 11 is installed on the top of the protective shell 1. Plugs 12 for connecting to lines are installed on both sides of the outer wall of the protective shell 1. The plugs 12 are threadedly connected to the protective shell 1, and nitrile rubber sealing rings are provided at the connection points. An electrical module 13 is installed inside the protective shell 1 and is connected to the plugs 12. A fixing plate 41 is provided at the bottom of the protective shell 1. The fixing plate 41 has mounting holes at the top for fixing the fixing plate 41 in the installation position. There is a gap between the protective shell 1 and the fixing plate 41, which facilitates heat dissipation at the bottom of the protective shell 1 and provides space for the installation of the protective structure 4.

[0036] It also includes a quick-release structure 2, a heat dissipation device 3, and a protective structure 4. The quick-release structure 2 is used to fix the cover plate 11 to the protective shell 1; the heat dissipation device 3 is installed on the protective shell 1; wherein, the cover plate 11 is quickly removed by the quick-release structure 2, and the heat dissipation device 3 cools down the electrical module 13 inside the protective shell 1.

[0037] Furthermore, the heat dissipation device 3 includes a fan 31, a dust filter 32, and a mounting frame 33.

[0038] Fan 31 is mounted on the side wall of protective housing 1;

[0039] The mounting frame 33 is fixed to the outer wall of the protective shell 1 and located outside the dustproof net 32, which is mounted on the mounting frame 33.

[0040] The upper frame of the mounting frame 33 is connected to the other parts of the mounting frame 33 by a buckle. When it is necessary to clean or replace the dustproof net 32, the upper frame can be removed by simply prying open the buckle and the dustproof net 32 ​​can be replaced. At the same time, an exhaust hole is provided on the side of the protective shell 1 away from the fan 31. The fan 31 allows the gas to enter the protective shell 1 through the dustproof net 32, pass through the electrical module 13, and then be discharged through the exhaust hole to cool the electrical module 13.

[0041] Furthermore, it also includes an auxiliary heat dissipation device 34; there are two auxiliary heat dissipation devices 34 respectively disposed on the bottom wall of the cover plate 11 and the protective shell 1; the auxiliary heat dissipation device 34 disposed on the cover plate 11 includes a heat-conducting plate 341 and heat dissipation fins 342; the heat-conducting plate 341 is snapped onto the cover plate 11 and located above the electrical module 13; the heat dissipation fins 342 are welded to the top of the heat-conducting plate 341 and extend upward.

[0042] The upper part of the electrical module 13 is cooled by the heat-conducting plate 341 and heat dissipation fins 342 on the cover plate 11.

[0043] The auxiliary heat dissipation device 34 installed on the bottom wall of the protective shell 1 has the same structure as the auxiliary heat dissipation device 34 installed on the cover plate 11. It is installed at the lower part of the electrical module 13 to dissipate heat from the lower part of the electrical module 13.

[0044] Furthermore, the quick-release structure 2 includes a limiting block 21 and a rotating component:

[0045] The limiting block 21 is fixedly connected to the inner wall of the protective shell 1 near the cover plate 11; four limiting blocks 21 are respectively disposed on the four side walls of the protective shell 1. Rectangular through holes are formed on the limiting block 21 along the vertical direction;

[0046] The rotating component includes an adjusting block 24, a rotating rod 22, and a locking block 23 connected in sequence from top to bottom;

[0047] The rotating rod 22 is cylindrical, and its upper end is fixedly connected to the adjusting block 24.

[0048] The upper part of the rotating rod 22 is inserted into the cover plate 11. A circular through hole is provided on the cover plate 11 corresponding to the position of the rotating rod 22. The rotating rod 22 and the circular through hole are fitted with a clearance to ensure that the rotating rod 22 can rotate freely. The lower end of the rotating rod 22 passes through the adjusting block 24 and is fixedly connected to the locking block 23. After the bottom of the rotating rod 22 is connected to the locking block 23, the whole is inverted T-shaped.

[0049] The locking block 23 has a cuboid structure, and its size is smaller than the size of the rectangular through hole on the limiting block 21. In use, the cover plate 11 is fastened to the top of the protective shell 1, the locking block 23 passes through the rectangular through hole on the limiting block 21, the adjusting block 24 is rotated 90 degrees, and the locking block 23 rotates 90 degrees and locks into the bottom of the limiting block 21, which can quickly complete the installation.

[0050] Furthermore, a protective structure 4 is also included, positioned between the fixed plate 41 and the bottom surface of the protective shell 1. The protective structure 4 includes insert rods 42 and rubber pillars 43. Multiple insert rods 42 are vertically fixed to the top of the fixed plate 41. The top of the rubber pillar 43 is fixedly connected to the protective shell 1, and the bottom of the rubber pillar 43 has a socket into which the top of the insert rod 42 is inserted. During the use of the coupler, if it is subjected to external vibration or impact, the vibration and impact energy will be transmitted to the insert rods 42 through the fixed plate 41, and the insert rods 42 will transfer the energy to the rubber pillars 43. Under the influence of this energy, the rubber pillars 43 undergo elastic deformation, converting the vibration and impact energy into elastic potential energy. Then, through their own elastic recovery, they slowly release the energy, thereby reducing the impact of vibration and impact on the internal electrical module 13 of the protective shell 1.

[0051] Working principle:

[0052] The output line of the distributed energy system and the access line of the distribution network are connected to the plugs 12 on both sides of the protective shell 1, respectively. After the connection is completed, the electrical module 13 can form a path with the external line through the plugs 12 to realize the transmission and conversion of electrical energy between the distributed energy and the distribution network.

[0053] During normal operation of the coupler, the electrical module 13 continuously generates heat. At this time, the heat dissipation device 3 starts to work, exhausting the hot air inside the protective shell 1 through the fan 31, forming an air circulation, and realizing active heat dissipation of the electrical module 13.

[0054] Meanwhile, the auxiliary heat dissipation device 34 also plays a role. The heat from the upper part of the electrical module 13 is transferred to the heat-conducting plate 341 on the cover plate 11. The heat-conducting plate 341 quickly transfers the heat to the heat dissipation fins 342. The heat dissipation fins 342 dissipate the heat into the air by increasing the contact area with the air. The heat from the lower part of the electrical module 13 is transferred to the heat-conducting plate 341 on the bottom wall of the protective shell 1, and then dissipated through the corresponding heat dissipation fins 342. This achieves simultaneous heat dissipation from the upper and lower parts of the electrical module 13, further improving the heat dissipation efficiency and ensuring that the electrical module 13 always operates within a suitable temperature range.

[0055] When the electrical module 13 inside the coupler malfunctions and requires repair or replacement, the operator simply rotates the adjusting block 24 on the cover plate 11 by hand. The adjusting block 24 drives the rotating rod 22 and the locking block 23 to rotate 90 degrees together. At this time, the length direction of the locking block 23 is aligned with the length direction of the rectangular through hole on the limiting block 21. The operator can then lift the cover plate 11 upwards to remove the locking block 23 from the through hole of the limiting block 21, achieving quick disassembly of the cover plate 11. After the repair is completed, the operator can re-fix the cover plate 11 onto the protective shell 1.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coupler for connecting distributed energy resources to a distribution network, comprising a protective housing (1), characterized in that: The protective shell (1) is equipped with a cover plate (11) on the top, and plugs (12) are installed on both the left and right sides of the protective shell (1). An electrical module (13) is provided inside the protective shell (1), and the electrical module (13) is connected to the plug (12). A fixing plate (41) is provided at the bottom of the protective shell (1). There is a gap between the protective shell (1) and the fixing plate (41). The coupler for connecting distributed energy to the distribution network also includes a quick-release structure (2) for mounting the cover plate (11) on the protective shell (1); and a heat dissipation device (3) mounted on the protective shell (1). The electrical module (13) inside the protective shell (1) is cooled by the heat dissipation device (3).

2. The coupler for distributed energy access to a distribution network according to claim 1, characterized in that: The heat dissipation device (3) includes a fan (31), a dust filter (32), and a mounting frame (33): The fan (31) is mounted on the side wall of the protective housing (1); The mounting frame (33) is fixed to the outer wall of the protective shell (1) and located outside the dustproof net (32), which is mounted on the mounting frame (33).

3. The coupler for distributed energy access to a distribution network according to claim 2, characterized in that: It also includes an auxiliary heat dissipation device (34); there are two auxiliary heat dissipation devices (34) respectively disposed on the bottom wall of the cover plate (11) and the protective shell (1); the auxiliary heat dissipation device (34) disposed on the cover plate (11) includes a heat-conducting plate (341) and heat dissipation fins (342): The heat-conducting plate (341) is snapped onto the cover plate (11) and located above the electrical module (13); The heat dissipation fins (342) are inserted into the top of the heat-conducting plate (341); The electrical module (13) is cooled by the heat-conducting plate (341) and the heat dissipation fins (342).

4. The coupler for distributed energy access to a distribution network according to claim 1, characterized in that: The quick-release structure (2) includes a limiting block (21) and a rotating component: The limiting block (21) is fixedly connected to the inner wall of the protective shell (1) near the cover plate (11); a rectangular through hole is provided on the limiting block (21) along the vertical direction; The rotating component includes an adjusting block (24), a rotating rod (22), and a locking block (23) connected sequentially from top to bottom. The rotating rod (22) is cylindrical, and the upper end of the rotating rod (22) is fixedly connected to the adjusting block (24); The upper part of the rotating rod (22) is inserted into the cover plate (11) and can rotate relative to the cover plate (11) under the drive of the adjusting block (24); the lower end of the rotating rod (22) passes through the adjusting block (24) and is fixedly connected to the locking block (23); The card block (23) has a cuboid structure, and the size of the card block (23) is smaller than the size of the rectangular through hole on the limiting block (21).

5. The coupler for distributed energy access to a distribution network according to claim 1, characterized in that: It also includes a protective structure (4) disposed between the bottom surface of the fixing plate (41) and the protective shell (1); the protective structure (4) includes a plug (42) and a rubber column (43): There are multiple insertion rods (42), which are vertically fixed to the top of the fixing plate (41); The top of the rubber column (43) is fixedly connected to the protective shell (1), and the bottom of the rubber column (43) has a socket, into which the top of the plug rod (42) is inserted.

Images