Microcomputer anti-islanding protection device

Abstract

The utility model discloses a microcomputer anti-islanding protection device, which comprises a mounting plate and an islanding protection device body detachably mounted on the mounting plate, the islanding protection device body is fixedly connected with a fixed sleeve, the mounting plate is fixedly connected with a connecting rod, the connecting rod is in plug-in connection with the fixed sleeve, and the islanding protection device body is detachably mounted on the mounting plate. The islanding protection device comprises an islanding protection device body, a mounting plate is arranged on the islanding protection device body, a first fixing block is fixedly connected to the mounting plate, a clamping rod is slidably connected to the interior of the first fixing block, and a limiting plate is fixedly connected to one end of the clamping rod. And then through cooperation of a clamping rod and a reset spring and a second fixing block, the islanding protection device body and the mounting plate can be fixed, so that disassembly between the islanding protection device body and the mounting plate can be independently completed by a single worker, and the disassembly efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-islanding protection, in particular to a microcomputer anti-islanding protection device. Background Technique

[0002] The anti-islanding protection device is mainly used to prevent the power grid from having an islanding effect. Islanding is an electrical phenomenon that occurs when a part of the power grid is disconnected from the main power grid, and this part of the power grid is completely powered by a photovoltaic system. Since islanding can damage the safety of the public and power company maintenance personnel and the power supply quality, an anti-islanding device must be equipped in a photovoltaic power station. When an islanding phenomenon occurs, the grid connection point can be quickly cut off, so that the station can be quickly disconnected from the grid side, thus ensuring the life safety of the entire power station and relevant maintenance personnel. The anti-islanding protection device is mainly applicable to small power grid-connected power supply systems of 110KV, 66KV, 35KV, 10KV and low-voltage 380V photovoltaic power stations.

[0003] A Chinese patent with the publication number (CN220209959U) discloses a microcomputer anti-islanding protection device, including a fixed seat; four installation mechanisms equidistantly installed at four corners on the side of the fixed seat. The installation mechanism includes an installation seat, and an installation sliding rod is fixedly connected to the side of the installation seat, and a card slot is opened on the installation sliding rod; a fixing mechanism installed on the installation mechanism, and the fixing mechanism includes an L-shaped installation frame, and an installation sliding sleeve is fixedly connected to the end of the L-shaped installation frame. The utility model not only adopts an island protection device body installed overhead, which can achieve good heat dissipation for the island protection device body, but also adopts a clamping method to install the anti-islanding protection device. When disassembling, only need to pull the limit pin, and make the limit pin disengage from the card slot. Therefore, under the elastic force of the ejecting spring, the installation sliding sleeve can be ejected from the installation sliding rod through the ejecting sliding sleeve, so that the island protection device body can be conveniently disassembled.

[0004] The defect of the above-selected technology is that: by using a plurality of fixing mechanisms and a plurality of installation sliding rods for fixing, the island protection device body is fixed on the fixed seat. However, there are a plurality of limit pins inserted into the installation sliding rod in the fixing mechanism. When disassembling, it is necessary to pull out all the limit pins from the installation sliding rod to disassemble the island protection device body. Therefore, a single worker cannot pull out a plurality of limit pins at the same time at once, and double-person cooperation is required, or tools are used to fix the limit pins pulled out of the installation sliding rod to prevent the limit pins from being inserted back into the installation sliding rod again after letting go, which affects the normal disassembly of the island protection device body. Content of the Utility Model

[0005] The purpose of the utility model is to provide a microcomputer anti-islanding protection device to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A microcomputer anti-islanding protection device, including a mounting plate and an anti-islanding protection device body detachably mounted on the mounting plate. A fixed sleeve is fixedly connected to the anti-islanding protection device body. A connecting rod is fixedly connected to the mounting plate. The connecting rod is inserted into the fixed sleeve. A first fixing block is fixedly connected to the mounting plate. A clamping rod is slidably connected inside the first fixing block. One end of the clamping rod is fixedly connected to a limiting plate. A return spring is sleeved outside the clamping rod. A second fixing block is fixedly connected to the anti-islanding protection device body. The clamping rod is inserted into the second fixing block.

[0007] As a preferred embodiment of the present utility model, a plurality of air inlet holes are provided on the back of the anti-islanding protection device body. A heat dissipation fan is fixedly installed on the mounting plate. The heat dissipation fan can blow air into the air inlet holes to dissipate heat inside the anti-islanding protection device body.

[0008] As a preferred embodiment of the present utility model, ventilation grooves are provided on the four sides of the back of the anti-islanding protection device body.

[0009] As a preferred embodiment of the present utility model, heat dissipation grooves are symmetrically and fixedly connected to both sides of the anti-islanding protection device body.

[0010] As a preferred embodiment of the present utility model, fixing holes are provided at the four corners of the mounting plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are: By the cooperation of the connecting rod and the fixed sleeve provided in the present utility model, the anti-islanding protection device body can be directly inserted into the mounting plate. Then, through the cooperation of the clamping rod and the return spring with the second fixing block, the anti-islanding protection device body and the mounting plate can be fixed. Thus, the disassembly between the anti-islanding protection device body and the mounting plate can be independently completed by a single worker, and the disassembly efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a perspective view of the present utility model;

[0014] Figure 3 is of the present utility model Figure 2 enlarged schematic structural diagram at A in.

[0015] In the figure: 1. Anti-islanding protection device body; 2. Mounting plate; 3. Heat dissipation fan; 4. Air inlet holes; 5. Ventilation grooves; 6. Heat dissipation grooves; 7. Connecting rod; 8. Fixed sleeve; 9. First fixing block; 10. Clamping rod; 11. Limiting plate; 12. Return spring; 13. Second fixing block; 14. Fixing holes. Specific embodiments

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1 to 3 , the present utility model provides a technical solution: a microcomputer anti-islanding protection device, including a mounting plate 2 and an anti-islanding protection device body 1 detachably mounted on the mounting plate 2. A fixed sleeve 8 is fixedly connected to the anti-islanding protection device body 1. There is an air gap between the fixed sleeve 8 and the anti-islanding protection device body 1 to facilitate the passage of air. A connecting rod 7 is fixedly connected to the mounting plate 2. The connecting rod 7 is L-shaped. The vertical rod of the L-shape is inserted into the fixed sleeve 8, and the horizontal rod of the L-shape supports the fixed sleeve 8. The connecting rod 7 is inserted into the fixed sleeve 8. A first fixing block 9 is fixedly connected to the mounting plate 2. A clamping rod 10 is slidably connected inside the first fixing block 9. One end of the clamping rod 10 is fixedly connected to a limiting plate 11. A return spring 12 is sleeved outside the clamping rod 10, and the return spring 12 is fixed to the first fixing block 9. A second fixing block 13 is fixedly connected to the anti-islanding protection device body 1, and the clamping rod 10 is inserted into the second fixing block 13.

[0018] Among them, a plurality of air inlet holes 4 are opened on the back of the anti-islanding protection device body 1. The range where the air inlet holes 4 are provided corresponds to the heat dissipation fan 3. A heat dissipation fan 3 is fixedly installed on the mounting plate 2. The heat dissipation fan 3 can blow air into the air inlet holes 4, and the anti-islanding protection device body 1 can be cooled by blowing air into the air inlet holes 4 through the heat dissipation fan 3.

[0019] Among them, ventilation grooves 5 are opened on the four sides of the back of the anti-islanding protection device body 1. The air blown out by the heat dissipation fan 3 can flow to the periphery of the anti-islanding protection device body 1 through the guidance of the ventilation grooves 5 to blow away the dust around the anti-islanding protection device body 1.

[0020] Among them, heat dissipation grooves 6 are symmetrically and fixedly connected to both sides of the anti-islanding protection device body 1. The air blown into the anti-islanding protection device body 1 from the air inlet holes 4 by the heat dissipation fan 3 will be blown out through the heat dissipation grooves 6, which can take out the heat inside the anti-islanding protection device body 1.

[0021] Among them, fixing holes 14 are opened at the four corners of the mounting plate 2. By inserting bolts into the provided fixing holes 14, the mounting plate 2 can be fixed to the cabinet wall.

[0022] Specifically, when it is necessary to disassemble the island protection device body 1, the clamping rod 10 can be pulled to drive the limiting plate 11 to squeeze the return spring 12 by the clamping rod 10. As a result, one end of the clamping rod 10 will disengage from the inside of the second fixing block 13. Then, the island protection device body 1 can be pulled upward to make the fixed sleeve 8 move upward with the island protection device body 1 and disengage from the connecting rod 7, and the island protection device body 1 can be removed. When the island protection device body 1 is installed on the mounting plate 2, the heat dissipation fan 3 can be started to blow the air into the inside of the island protection device body 1 through the air inlet hole 4 by the heat dissipation fan 3, and then discharged from the heat dissipation groove 6 of the island protection device body 1, so as to dissipate the heat inside the island protection device body 1. While the heat dissipation fan 3 blows air into the air inlet hole 4, it will also blow the air to the periphery of the back of the island protection device body 1. The air is guided by the ventilation groove 5 and blown to the periphery of the island protection device body 1 to blow away the dust.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0024] In addition, the terms "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", and "fourth" may explicitly or implicitly include at least one of such features.

[0025] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A microcomputer anti-islanding protection device, comprising a mounting plate (2) and an anti-islanding protection device body (1) detachably mounted on the mounting plate (2), characterized in that: A fixed sleeve (8) is fixedly connected to the body (1) of the island protection device. A connecting rod (7) is fixedly connected to the mounting plate (2). The connecting rod (7) is inserted into the fixed sleeve (8). A first fixing block (9) is fixedly connected to the mounting plate (2). A clamping rod (10) is slidably connected inside the first fixing block (9). One end of the clamping rod (10) is fixedly connected to a limiting plate (11). A return spring (12) is sleeved on the outer side of the clamping rod (10). A second fixing block (13) is fixedly connected to the body (1) of the island protection device. The clamping rod (10) is inserted into the second fixing block (13).

2. The microcomputer anti-islanding protection device according to claim 1, characterized in that: A plurality of air inlet holes (4) are formed in the back of the body (1) of the island protection device. A cooling fan (3) is fixedly installed on the mounting plate (2). The cooling fan (3) can blow air into the air inlet holes (4) to dissipate heat inside the body (1) of the island protection device.

3. The microcomputer anti-islanding protection device according to claim 1, characterized in that: Ventilation grooves (5) are formed on all four sides of the back of the body (1) of the island protection device.

4. The microcomputer anti-islanding protection device according to claim 3, characterized in that: Heat dissipation grooves (6) are symmetrically and fixedly connected to both sides of the body (1) of the island protection device.

5. A microcomputer anti-islanding protection device according to claim 1, characterized in that: Fixing holes (14) are formed at the four corners of the mounting plate (2).

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