Distributed photovoltaic anti-islanding protection device

Abstract

The utility model discloses a distributed photovoltaic anti-islanding protection device, which relates to the anti-islanding field and comprises a base, a placing seat is mounted at the top of the base, and a stabilizing assembly is arranged in the placing seat. The stabilizing assembly comprises threaded rods installed on the two sides in the containing base, an air guide channel and a ventilation cavity, wherein the air guide channel and the ventilation cavity are formed in the containing base. According to the anti-islanding protector clamping and limiting device, the stabilizing assembly is arranged, the anti-islanding protector is placed between the two partition plates, the partition plates clamp the anti-islanding protector by moving the partition plates, then the sliding seats are limited through the limiting nuts, the partition plates are prevented from moving, and therefore the anti-islanding protector can be clamped and limited through the two partition plates; the anti-islanding protectors are prevented from moving at will, the stability of the anti-islanding protectors is further improved, meanwhile, the anti-islanding protectors do not need to be stacked together, and the situation that the lowermost anti-islanding protector is damaged by the gravity applied by the anti-islanding protector on the lowermost anti-islanding protector is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of anti-islanding, specifically to a kind of distributed photovoltaic anti-islanding protection device. BACKGROUND

[0002] Anti-islanding effect refers to the phenomenon that there is a current path in a certain area of the circuit but no current actually flows through, when anti-islanding effect occurs in the power grid, not only damage to electrical equipment, but also safety hazards in subsequent maintenance, therefore, it needs to cooperate with anti-islanding protection device.

[0003] According to the announcement number CN218958359U, a kind of distributed photovoltaic anti-islanding protection device is disclosed, the utility model not only can be overlapped to multiple anti-islanding protectors, and after lapping, the air duct formed between the adjacent two anti-islanding protectors can cooperate with the fan pipe of external fan to carry out high-efficiency heat dissipation, solve the defects that the existing anti-islanding protection device is not suitable for distributed photovoltaic power generation place use.

[0004] For the above-mentioned patent content, by being provided with multiple anti-islanding protectors, and the multiple anti-islanding protectors are stacked together in the way of lapping, and after lapping, there is no limit, the anti-islanding protector after lapping may shake, causing the anti-islanding protector at high place may fall, and thus damage, thereby reducing the protection effect of anti-islanding protector, and reducing the stability of anti-islanding protector after lapping. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims to provide a kind of distributed photovoltaic anti-islanding protection device, to solve the technical problem that multiple anti-islanding protectors are poor in stability after lapping, and thus the anti-islanding protector at high place may fall.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of distributed photovoltaic anti-islanding protection device, including base, the top of base is equipped with placing seat, the inside of placing seat is provided with stable component, and stable component includes the screw rod of being installed in the inside of placing seat two sides and the air guide passage and air passage of being opened in the inside of placing seat, the outer wall of two screw rods is respectively equipped with multiple sliding seat and limiting nut, two sliding seats are equipped with baffle, the baffle is equipped with heat-conducting silica gel pad, and multiple cooling fins are provided on heat-conducting silica gel pad.

[0007] By adopting the above technical scheme, two baffles can clamp and limit anti-islanding protector, prevent anti-islanding protector from moving randomly, and thus improve the stability of anti-islanding protector.

[0008] Further, the stabilizing assembly further comprises a plurality of air blowing holes formed on one side of the placement seat.

[0009] By adopting the above technical scheme, the air entering the air passage can be discharged through the air blowing holes, so as to accelerate the circulation speed of the air around the heat dissipation fin and prevent the heat emitted by the heat dissipation fin from being accumulated around.

[0010] Further, the placement seat is provided with an air guide cavity and a plurality of air exhaust holes below the inside of the placement seat, and air inlets are formed on both sides of the placement seat.

[0011] By adopting the above technical scheme, the air inlets are arranged to facilitate the entry of external air, the air exhaust holes are arranged to facilitate the discharge of air, and the air flows upwards, so as to facilitate the dispersion of heat.

[0012] Further, the air inlets are in communication with the air guide cavity, and a fan is installed in the air inlets.

[0013] By adopting the above technical scheme, the fan can accelerate the circulation speed of the air around the heat dissipation fin when working, and the external air can enter the air guide cavity through the air inlets.

[0014] Further, a plurality of pads are installed in the inside of the placement seat, and silica gel pads are installed on the top of the pads.

[0015] By adopting the above technical scheme, the pads can support the bottommost island protection device to prevent the island protection device from directly contacting the placement seat.

[0016] Further, an island protection device is arranged between every two of the partitions and on the top of the pads, and a protective frame is installed on the outer wall of the island protection device.

[0017] By adopting the above technical scheme, the protective frame can protect the outer wall of the island protection device.

[0018] Further, the air guide channels are in communication with the air guide cavity and the air passage, respectively.

[0019] By adopting the above technical scheme, part of the air in the air guide cavity can enter the air guide channels and then enter the air passage.

[0020] Further, the partitions are slidably connected with the threaded rods through the sliding seats.

[0021] By adopting the above technical scheme, when the sliding seat moves on the threaded rod, it can drive the partitions to move, so as to adjust the positions of the partitions.

[0022] Further, the sliding seat abuts against the limiting nuts.

[0023] By adopting the technical scheme, the limiting nut can abut against the sliding seat to prevent the sliding seat from moving randomly.

[0024] Further, the exhaust holes are in communication with the air guide cavities, and the exhaust holes are equidistantly distributed below the inside of the placing seat.

[0025] By adopting the technical scheme, external air can enter the inside of the exhaust holes through the air guide cavities, so that the air circulation speed around the anti-island protector is accelerated, and the heat dissipation effect on the anti-island protector is improved.

[0026] In summary, the utility model mainly has the following beneficial effects:

[0027] 1. The utility model discloses a stable assembly, which is used for placing the anti-island protector between two baffle plates, moving the baffle plates to clamp the anti-island protector, and limiting the sliding seat by the limiting nut to prevent the baffle plates from moving.

[0028] 2. The utility model discloses a sliding seat and a limiting nut, which are used for adjusting the position of the sliding seat to adjust the position of the baffle plate, adjusting the distance between the baffle plates, adapting to anti-island protectors of different heights, and improving the applicability of the stable assembly. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a whole three-dimensional structure schematic diagram of the utility model;

[0030] Figure 2 It is a placing seat cross-sectional structure schematic diagram of the utility model;

[0031] Figure 3 It is a placing seat three-dimensional structure schematic diagram of the utility model;

[0032] Figure 4 It is an anti-island protector structure schematic diagram of the utility model;

[0033] Figure 5 It is a baffle plate three-dimensional structure schematic diagram of the utility model.

[0034] In the figure: 1, base; 2, placing seat; 3, air inlet; 4, fan; 5, air guide cavity; 6, air outlet; 7, cushion block; 8, islanding protector; 9, stabilizing assembly; 901, threaded rod; 902, sliding seat; 903, limiting nut; 904, partition plate; 905, cooling fin; 906, heat-conducting silica gel pad; 907, air guide channel; 908, air passage; 909, air outlet; 10, protective frame; 11, through hole. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model and cannot be understood as limiting the utility model.

[0036] The embodiments will be described below according to the overall structure of the utility model.

[0037] Embodiment one:

[0038] A kind of distributed photovoltaic islanding protection device, as shown in Figures 1-5 It includes base 1, and the top of base 1 is equipped with placing seat 2, and a plurality of through holes 11 are formed in the side of placing seat 2, to facilitate air circulation, and stabilizing assembly 9 is arranged in the inside of placing seat 2, and stabilizing assembly 9 includes threaded rod 901 installed in the inside of placing seat 2 on both sides and air guide channel 907 and air passage 908 formed in the inside of placing seat 2, and the outer wall of the two threaded rods 901 is respectively sleeved with a plurality of sliding seats 902 and limiting nuts 903, and partition plate 904 is installed between the two sliding seats 902, and the islanding protector 8 can be clamped and limited by the two partition plates 904, to prevent the islanding protector 8 from moving randomly, thereby improving the stability of the islanding protector 8.

[0039] Specifically, heat-conducting silica gel pad 906 is installed on partition plate 904, and a plurality of cooling fins 905 are arranged on heat-conducting silica gel pad 906, and stabilizing assembly 9 further includes a plurality of air outlets 909 formed on one side of the inside of placing seat 2, and air outlet 909 is communicated with air passage 908, and the air entering into air passage 908 will be discharged through air outlet 909, so as to accelerate the circulation speed of the air around cooling fin 905, to prevent the heat emitted by cooling fin 905 from accumulating around, air guide channel 907 is respectively communicated with air guide cavity 5 and air passage 908, to enable part of the air in the inside of air guide cavity 5 to enter into the inside of air guide channel 907 and then enter into the inside of air passage 908, and partition plate 904 is slidably connected with threaded rod 901 through sliding seat 902, and when sliding seat 902 moves on threaded rod 901, it will drive partition plate 904 to move, so as to adjust the position of partition plate 904, and sliding seat 902 abuts against limiting nut 903, and limiting nut 903 can abut against sliding seat 902, to prevent sliding seat 902 from moving randomly.

[0040] Specifically, the inside of the placing seat 2 is provided with a gas guide cavity 5 and a plurality of air exhaust holes 6, and the two sides of the placing seat 2 are provided with air inlets 3, which are convenient for external air to enter, and the air exhaust holes 6 are arranged to facilitate the upward flow of air and facilitate the blowing of heat, the air inlets 3 are communicated with the gas guide cavity 5, and the inside of the air inlet 3 is provided with a fan 4, which can accelerate the flow speed of the surrounding air and make the external air enter the inside of the gas guide cavity 5 through the air inlet 3, the top of the cushion block 7 and between every two partition plates 904 are provided with an anti-island protector 8, the outer wall of the anti-island protector 8 is provided with a protective frame 10, the air exhaust holes 6 are communicated with the gas guide cavity 5, and the air exhaust holes 6 are equidistantly distributed on the inside of the placing seat 2, so that the external air can enter the inside of the air exhaust holes 6 through the gas guide cavity 5, so as to accelerate the flow speed of the surrounding air of the anti-island protector 8 and improve the heat dissipation effect of the anti-island protector 8.

[0041] Embodiment two:

[0042] On the basis of the above-mentioned embodiment one, in order to prevent the bottommost anti-island protector 8 from contacting the placing seat and improve the heat dissipation effect of the bottom surface of the bottommost anti-island protector 8, the following structure is arranged.

[0043] Referring to Figures 1-3 , the inside of the placing seat 2 is further provided with a plurality of cushion blocks 7, the top of the cushion block 7 is provided with a silica gel pad, the cushion block 7 can support the bottommost anti-island protector 8, prevent the anti-island protector 8 from directly contacting the placing seat 2, make the air flow on the bottom surface of the bottommost anti-island protector 8, and further improve the heat dissipation effect of the anti-island protector 8.

[0044] The working principle of the utility model is as follows: first, the staff can adjust the position of the partition plate 904 according to the height of the anti-island protector 8, then place the anti-island protector 8 between the two partition plates 904, move the upper partition plate 904, make the partition plate 904 clamp the anti-island protector 8, rotate the limiting nut 903, make the limiting nut 903 contact with the sliding seat 902, so that the limiting nut 903 can limit the sliding seat 902, prevent the partition plate 904 from moving, so that the two partition plates 904 can clamp and limit the anti-island protector 8, prevent the anti-island protector 8 from moving randomly, and further improve the stability of the anti-island protector 8.

[0045] The heat-conducting silica gel pad 906 can conduct heat at the part where the anti-islanding protector 8 and the partition plate 904 meet, and dissipate through the heat dissipation fin 905, and when the anti-islanding protector 8 is cooled, the fan 4 can be started, the fan 4 works to extract external air, the external air enters into the air guide cavity 5 through the air inlet 3, part of the air is discharged through the air outlet hole 6, and part of the air enters into the air cavity 908 through the air guide channel 907 and is discharged through the air outlet 909, so as to accelerate the air circulation speed around the anti-islanding protector 8, and facilitate cooling of the anti-islanding protector 8.

[0046] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiments without the creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as in the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A distributed photovoltaic anti-islanding protection device comprising a base (1), characterized in that: The top of the base (1) is provided with a placing seat (2), the inside of the placing seat (2) is provided with a stable assembly (9), and the stable assembly (9) comprises threaded rods (901) mounted on both sides of the inside of the placing seat (2), and air guide channels (907) and air vent cavities (908) opened in the inside of the placing seat (2), the outer walls of the two threaded rods (901) are respectively sleeved with a plurality of sliding seats (902) and limiting nuts (903), a partition plate (904) is mounted between the two sliding seats (902), a heat-conducting silica gel pad (906) is mounted on the partition plate (904), and a plurality of cooling fins (905) are arranged on the heat-conducting silica gel pad (906).

2. The distributed photovoltaic anti-islanding protection device according to claim 1, characterized in that: The stable assembly (9) further comprises a plurality of air blowing ports (909) opened on one side of the inside of the placing seat (2), and the air blowing ports (909) are in communication with the air vent cavities (908).

3. The distributed photovoltaic anti-islanding protection device according to claim 1, characterized in that: An air guide cavity (5) and a plurality of air exhaust holes (6) are opened below the inside of the placing seat (2), and air inlets (3) are opened on both sides of the placing seat (2).

4. The distributed photovoltaic anti-islanding protection device according to claim 3, characterized in that: The air inlets (3) are in communication with the air guide cavity (5), and the inside of the air inlets (3) is provided with a fan (4).

5. The distributed photovoltaic anti-islanding protection device according to claim 1, characterized in that: A plurality of pad blocks (7) are further mounted in the inside of the placing seat (2), and a silica gel pad is mounted on the top of the pad block (7).

6. The distributed photovoltaic anti-islanding protection device according to claim 1, characterized in that: An anti-island protector (8) is arranged between every two partition plates (904) and on the top of the pad block (7), and a protective frame (10) is mounted on the outer wall of the anti-island protector (8).

7. The distributed photovoltaic anti-islanding protection device according to claim 1, characterized in that: The air guide channels (907) are in communication with the air guide cavity (5) and the air vent cavities (908) respectively.

8. The distributed photovoltaic anti-islanding protection device according to claim 1, characterized in that: The partition plate (904) is slidably connected with the threaded rod (901) through the sliding seat (902).

9. The distributed photovoltaic anti-islanding protection device according to claim 1, characterized in that: The sliding seat (902) abuts against the limiting nut (903).

10. The distributed photovoltaic anti-islanding protection device according to claim 3, characterized in that: The air exhaust holes (6) are in communication with the air guide cavity (5), and the air exhaust holes (6) are equidistantly distributed below the inside of the placing seat (2).

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