A lightning protection power cabinet for new energy applications

Abstract

This utility model discloses a lightning protection power cabinet for new energy applications, belonging to the field of power equipment technology. It includes an outer casing and an inner casing, with the inner casing suspended inside the outer casing. An outer door is rotatably connected to the side of the outer casing, and an inner door is located on the side of the outer door. Several nylon support blocks connect the outer and inner casings, and between the outer and inner doors. The outer and inner doors respectively cover the openings of the outer and inner casings. A connecting frame is installed inside the inner casing near its top. In this design, the outer and inner casings are suspended and separated by nylon support blocks, forming a non-conductive air layer between them. This prevents external lightning current from being directly conducted to the electrical components inside the inner casing. A surge protector is installed on the connecting frame at the top of the inner casing, near the input terminal of the electrical components. It can quickly respond to lightning overvoltages, promptly discharge surge energy, and ultimately provide lightning protection for the electrical components.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically to a lightning protection power cabinet for new energy applications. Background Technology

[0002] With the increasing number of household appliances, new energy power generation technologies such as wind and solar power are also developing rapidly. The stability of electricity needs to be guaranteed. New energy power cabinets are a common basic power facility. They contain a large number of electronic components and are generally placed in open outdoor areas. Their safety and stability play a significant role in the field of power technology.

[0003] During use, there is a problem with outdoor power cabinets: when lightning strikes the power cabinet during thunderstorms, it can cause damage, affect the stability of the power cabinet's operation, and even shorten its service life. Therefore, a lightning-proof power cabinet for new energy applications is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a lightning protection power cabinet for new energy applications, so as to solve the problems mentioned in the background art.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A surge protection power cabinet for new energy applications includes an outer enclosure and an inner enclosure. The inner enclosure is suspended inside the outer enclosure. An outer door is rotatably connected to the side of the outer enclosure, and an inner door is located on the side of the outer door. Several nylon support blocks connect the outer enclosure and the inner enclosure, as well as the outer door and the inner door. The outer door and the inner door respectively cover the openings of the outer enclosure and the inner enclosure. A connecting frame is installed near the top of the inner enclosure, and several surge protectors are installed inside the connecting frame. The outer enclosure and the inner enclosure are suspended and separated by the nylon support blocks, forming a non-conductive air layer between them to prevent external lightning current from being directly conducted to the electrical components inside the inner enclosure. The surge protectors are installed on the connecting frame at the top of the inner enclosure, near the input terminals of the electrical components, and can quickly respond to lightning overvoltages and promptly discharge surge energy.

[0007] Furthermore, the inner enclosure is used to fix electrical components. The input terminal of the surge protector is connected to the busbar of the electrical components, and the output terminal of the surge protector is connected to the power distribution switch located inside the inner enclosure via a wire. A lightning protection grounding terminal plate is installed at the bottom of the outer enclosure. The grounding terminal of the surge protector is connected to the lightning protection grounding terminal plate via an independent wire, and the lightning protection grounding terminal plate is connected to the grounding electrode via a copper busbar. The surge protector is connected to the lightning protection grounding terminal plate via an independent wire, which shortens the grounding path, reduces the grounding resistance, and ensures that surge energy is quickly discharged. The copper busbar connecting to the grounding electrode improves conductivity and reliability.

[0008] Furthermore, a support platform is installed on the bottom surface of the outer casing, and the side of the support platform has a cavity. The outer casing, inner casing, and support platform each have a pair of interconnected through holes, and the through holes and cavities are connected. A pair of waterproof glands are installed inside the inner casing. The bottom surface of the connecting frame has several wire grooves. The through holes and cavities form cable channels. The wire grooves fix the direction of the wires and avoid the risk of short circuits caused by messy and tangled cables. The waterproof glands seal the inlet to prevent rainwater and moisture from entering the inner casing.

[0009] Furthermore, the nylon support blocks located on the outer and inner boxes are evenly distributed on the outer side of the inner box. The evenly distributed nylon support blocks disperse the weight of the inner box and the external impact force, avoiding local stress concentration that could lead to box deformation or support failure.

[0010] Furthermore, sealing gaskets are installed on the sides of both the outer and inner boxes. A handle is installed on the outer side of the outer box, and a lock body is embedded inside the outer box. The sealing gaskets fill the gap between the door and the box to prevent rainwater and dust from entering the box and ensuring the operating environment of the equipment. The handle facilitates opening and closing the door, and the lock body prevents unauthorized personnel from opening it, avoiding accidental contact with electrical components or human damage, thus improving equipment safety.

[0011] Furthermore, a connecting sleeve is installed on the side of the outer casing, the connecting sleeve has a connecting cavity, and a rotating shaft is rotatably connected inside the connecting cavity. An L-shaped plate is installed on the side of the outer casing door, and the L-shaped plate is installed outside the rotating shaft. The cooperation between the rotating shaft and the connecting sleeve allows the outer casing door to rotate freely around the shaft.

[0012] Furthermore, the outer casing is covered with an epoxy resin layer, and the inner casing is a metal casing. The epoxy resin layer has high insulation, corrosion resistance, and impact resistance, protecting the outer casing from lightning strikes, rainwater, and acid and alkali environments, thus extending its service life. The metal inner casing forms a Faraday cage effect, shielding external electromagnetic interference, and also serves as the grounding carrier for the surge protector, ensuring rapid current discharge.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the outer and inner enclosures of this new energy lightning protection power cabinet are suspended and separated by nylon support blocks, forming a non-conductive air layer between them, which prevents external lightning current from being directly conducted to the electrical components inside the inner enclosure through the outer and inner enclosures. The surge protector is installed on the connection frame at the top of the inner enclosure, close to the input end of the electrical components, and can quickly respond to lightning overvoltage, timely discharge surge energy, and ultimately provide lightning protection for the electrical components. Attached Figure Description

[0014] Figure 1 This is a first three-dimensional structural schematic diagram of the lightning protection power cabinet for new energy disclosed in an embodiment of the present utility model;

[0015] Figure 2 This is a second three-dimensional structural schematic diagram of the lightning protection power cabinet for new energy disclosed in an embodiment of this utility model;

[0016] Figure 3 This is a third perspective structural diagram of the lightning protection power cabinet for new energy disclosed in an embodiment of this utility model;

[0017] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A;

[0018] Figure 5 This is an exploded structural diagram of a lightning protection power cabinet for new energy disclosed in an embodiment of this utility model.

[0019] In the diagram: 1. Outer casing; 2. Support platform; 3. Inner casing; 4. Connecting frame; 5. Cable tray; 6. Outer casing door; 7. Inner casing door; 8. Sealing gasket; 9. Through hole; 10. Surge protector; 11. Nylon support block; 12. Waterproof gland; 13. Connecting sleeve; 14. Connecting cavity; 15. L-shaped plate. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-5This utility model provides a technical solution: a lightning protection power cabinet for new energy, including an outer casing 1 and an inner casing 3. The inner casing 3 is suspended inside the outer casing 1. An outer casing door 6 is rotatably connected to the side of the outer casing 1. An inner casing door 7 is provided on the side of the outer casing door 6. Several nylon support blocks 11 are connected between the outer casing 1 and the inner casing 3, and between the outer casing door 6 and the inner casing door 7. The outer casing door 6 and the inner casing door 7 respectively cover the openings of the outer casing 1 and the inner casing 3. A connecting frame 4 is installed inside the inner casing 3 near its top. Several... The surge protector 10 has an outer enclosure 1 and an inner enclosure 3 fixed by evenly distributed nylon support blocks 11, suspending the inner enclosure 3 and forming a non-conductive air layer between them to block the path of lightning current conduction through the enclosure. The outer enclosure door 6 and the inner enclosure door 7 are connected by nylon support blocks 11 to ensure that the inner enclosure 3 is not directly affected by external forces when the doors are opened and closed, while maintaining the integrity of the double protection structure. The surge protector 10 is directly connected to the busbar of the electrical components. When an overvoltage occurs due to a lightning strike, it quickly conducts the surge energy into the grounding system to protect the internal equipment.

[0022] As an embodiment of this utility model, the inner housing 3 is further used to fix electrical components. The input terminal of the surge protector 10 is connected to the busbar of the electrical components. The output terminal of the surge protector 10 is connected to the power distribution switch located inside the inner housing 3 through a wire. A lightning protection grounding terminal plate is installed at the bottom of the outer housing 1. The grounding terminal of the surge protector 10 is connected to the lightning protection grounding terminal plate through an independent wire. The lightning protection grounding terminal plate is connected to the grounding electrode through a copper busbar. The busbar current of the electrical components is first filtered by the surge protector 10. If an abnormal overvoltage occurs, the internal components of the surge protector 10 quickly conduct, limiting the overvoltage to a safe range. The surge current is transmitted to the lightning protection grounding terminal plate through an independent wire, and then conducted to the ground through the copper busbar, preventing the current from flowing back to the inner housing 3 or the outer housing 1, and reducing secondary damage caused by potential difference.

[0023] As an embodiment of this utility model, a support platform 2 is further installed on the bottom surface of the outer casing 1. The side of the support platform 2 has a cavity. The outer casing 1, the inner casing 3, and the support platform 2 all have a pair of interconnected through holes 9, and the through holes 9 are connected to the cavity. A pair of waterproof glands 12 are installed inside the inner casing 3. The bottom surface of the connecting frame 4 has several wire grooves 5. External cables enter from the cavity on the side of the support platform 2, pass through the through holes 9 into the inner casing 3, are sealed and fixed by the waterproof glands 12, and then connect to the surge protector 10 and the power distribution switch through the wire grooves 5 on the bottom surface of the connecting frame 4, forming a closed waterproof cable path. The waterproof glands 12 tighten the cable by squeezing the rubber sealing ring to prevent moisture from entering the cabinet along the cable, adapting to the outdoor humid environment.

[0024] As an embodiment of this utility model, the nylon support blocks 11 located on the outer box 1 and the inner box 3 are evenly distributed on the outside of the inner box 3. The nylon support blocks 11 serve as elastic support points to suspend the inner box 3 inside the outer box 1. When the outer box 1 is impacted or vibrated, the nylon support blocks 11 absorb energy through deformation, reducing the vibration transmitted to the inner box 3. At the same time, the insulation properties of the nylon support blocks 11 ensure electrical isolation between the inner and outer boxes.

[0025] As an embodiment of this utility model, sealing gaskets 8 are installed on the sides of both the outer door 6 and the inner door 7. A handle is installed on the outer side of the outer door 6, and a lock body is embedded inside the outer door 6. When the outer door 6 and the inner door 7 are closed, the sealing gasket 8 is deformed under pressure, filling the gap between the door seams, and further blocking external moisture and dust in conjunction with the suspended structure. The lock body is fixed to the door body by a mechanical lock cylinder, and can only be opened with a key or tool.

[0026] As an embodiment of this utility model, a connecting sleeve 13 is further installed on the side of the outer casing 1. The connecting sleeve 13 has a connecting cavity 14. A rotating shaft is rotatably connected inside the connecting cavity 14. An L-shaped plate 15 is installed on the side of the outer casing door 6. The L-shaped plate 15 is installed on the outside of the rotating shaft. The outer casing door 6 is fixed to the rotating shaft by the L-shaped plate 15. The two ends of the rotating shaft are embedded in the connecting cavity 14 of the connecting sleeve 13 to form a rotating pair. When the door is opened and closed, the outer casing door 6 rotates around the rotating shaft. The L-shaped plate 15 bears the lateral tension to ensure that the door is stable and does not shake.

[0027] As an embodiment of this utility model, the outer casing 1 is further covered with an epoxy resin layer, and the inner casing 3 is a metal casing. The epoxy resin layer serves as a protective coating for the outer casing 1, which can withstand complex outdoor environments. Its insulation properties prevent external current from being directly conducted to the casing. The metal casing of the inner casing 3 is reliably grounded through a lightning protection grounding terminal block. When leakage or surge occurs inside, the current is quickly conducted to the ground. The metal inner casing 3 has a shielding effect against high-frequency electromagnetic interference, reducing the interference of electromagnetic pulses generated by external lightning strikes on internal electronic components and ensuring the stable operation of the power cabinet.

[0028] As one embodiment of this utility model, the power source of the power cabinet is one or more of wind power generation, hydropower generation, and solar power generation.

[0029] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A lightning protection power cabinet for new energy, characterized in that, The enclosure includes an outer casing (1) and an inner casing (3). The inner casing (3) is suspended inside the outer casing (1). An outer casing door (6) is rotatably connected to the side of the outer casing (1). An inner casing door (7) is provided on the side of the outer casing door (6). Several nylon support blocks (11) are connected between the outer casing (1) and the inner casing (3) and between the outer casing door (6) and the inner casing door (7). The outer casing door (6) and the inner casing door (7) respectively cover the openings of the outer casing (1) and the inner casing (3). A connecting frame (4) is installed inside the inner casing (3) near its top. Several surge protectors (10) are installed inside the connecting frame (4).

2. The lightning protection power cabinet for new energy according to claim 1, characterized in that, The inner enclosure (3) is used to fix electrical components. The input terminal of the surge protector (10) is connected to the busbar of the electrical components. The output terminal of the surge protector (10) is connected to the power distribution switch located inside the inner enclosure (3) through a wire. A lightning protection grounding terminal plate is installed at the bottom of the outer enclosure (1). The grounding terminal of the surge protector (10) is connected to the lightning protection grounding terminal plate through an independent wire. The lightning protection grounding terminal plate is connected to the grounding electrode through a copper busbar.

3. The lightning protection power cabinet for new energy according to claim 1, characterized in that, The bottom surface of the outer casing (1) is equipped with a support platform (2), and the side of the support platform (2) has a cavity. The outer casing (1), the inner casing (3), and the support platform (2) all have a pair of interconnected through holes (9), and the through holes (9) are connected to the cavity. The inner casing (3) is equipped with a pair of waterproof glands (12), and the bottom surface of the connecting frame (4) has several wire grooves (5).

4. The lightning protection power cabinet for new energy according to claim 1, characterized in that, The nylon support blocks (11) located in the outer box (1) and the inner box (3) are evenly distributed on the outside of the inner box (3).

5. The lightning protection power cabinet for new energy according to claim 1, characterized in that, Both the outer box door (6) and the inner box door (7) are equipped with sealing gaskets (8) on their sides. The outer box door (6) is equipped with a handle on its outer side and a lock body is embedded inside the outer box door (6).

6. A lightning protection power cabinet for new energy applications according to claim 1, characterized in that, A connecting sleeve (13) is installed on the side of the outer casing (1). The connecting sleeve (13) has a connecting cavity (14). A rotating shaft is rotatably connected inside the connecting cavity (14). An L-shaped plate (15) is installed on the side of the outer casing door (6). The L-shaped plate (15) is installed on the outside of the rotating shaft.

7. A lightning protection power cabinet for new energy applications according to claim 1, characterized in that, The outer casing (1) is covered with an epoxy resin layer, and the inner casing (3) is a metal casing.

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