Lightning protection grounding distribution box

Abstract

The utility model discloses a lightning protection grounding distribution box, which relates to the technical field of distribution boxes, and comprises a distribution box body and an electrical assembly, the upper end of the distribution box body is fixedly provided with a lightning arrester, the lower end of the distribution box body is fixedly provided with three groups of connecting terminals, and the lower end of each group of connecting terminals is provided with a detachable grounding electrode. Two groups of mounting plates are fixedly mounted in the distribution box body, and shielding layers are mounted at the upper ends of the two groups of mounting plates. According to the utility model, a multi-layer lightning protection system can be formed, the lightning protection capability of the distribution box body is greatly improved, internal electrical components are effectively protected, the two groups of shielding layers are arranged, electromagnetic pulses generated by lightning stroke can be effectively shielded, the influence of electromagnetic interference on electrical components is reduced, and the service life of the distribution box is prolonged. Normal operation of equipment in the distribution box body is ensured, and reliability and stability of the distribution box body are improved.

Description

Technical Field

[0001] This utility model relates to the field of distribution box technology, and in particular to a lightning protection grounding distribution box. Background Technology

[0002] Distribution boxes, as crucial equipment for power distribution and control, are widely used in power systems. However, in actual use, distribution boxes frequently face the threat of overvoltages, such as those caused by lightning. Overvoltages and overcurrents generated by lightning can damage electrical components within the distribution box, leading to power outages or even serious accidents such as fires.

[0003] However, while existing lightning protection and grounding distribution boxes possess certain lightning protection functions, they still have shortcomings in terms of lightning protection structure design and grounding effect. The connection between the lightning protection module and the grounding system in some distribution boxes is not optimized enough, resulting in a slow discharge speed of lightning current and an inability to protect the equipment inside the distribution box in a timely and effective manner. Moreover, traditional distribution boxes have limited protection measures for internal electrical components in terms of structure, and cannot cope with electromagnetic pulse interference generated during lightning strikes, affecting the normal operation of equipment. Therefore, it is necessary to design a new type of lightning protection and grounding distribution box to improve its lightning protection performance and reliability. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a lightning protection grounding distribution box.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lightning protection grounding distribution box, comprising a distribution box body and electrical components, wherein a lightning arrester is fixedly installed at the upper end of the distribution box body, and three sets of connection terminals are fixedly installed at the lower end of the distribution box body, wherein a detachable grounding electrode is installed at the lower end of each set of connection terminals, and two sets of mounting plates are fixedly installed inside the distribution box body, wherein a shielding layer is installed at the upper end of both sets of mounting plates, and a grounding busbar and multiple sets of surge protectors are fixedly installed at the upper end of one set of mounting plates.

[0006] Preferably, the grounding wire at the lower end of the lightning arrester is connected to one end of the grounding busbar, and the grounding wires at one end of multiple surge protectors are all connected to the other end of the grounding busbar.

[0007] Preferably, the grounding wires at the upper ends of the three sets of connection terminals are all connected to the other end of the grounding busbar.

[0008] Preferably, a potential connection system is fixedly installed on the upper end of one of the mounting plates, and multiple sets of connecting wires at the end of the potential connection system are respectively connected to the metal shell of the distribution box body, two sets of shielding layers, two sets of mounting plates and one end of the grounding busbar.

[0009] Preferably, the lower end of the electrical assembly is mounted on the upper end of another set of mounting plates, and each electrical component in the electrical assembly is connected to the output terminals of multiple sets of surge protectors.

[0010] Preferably, a circuit breaker, a contactor, and a relay are installed sequentially from left to right on the upper end of one of the mounting plates, and two sets of connecting brackets are fixedly installed on one side of the distribution box body.

[0011] Preferably, a sealed door is hinged to the other side of the distribution box body, and an observation window is installed through one side of the sealed door.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the combination of the lightning arrester, multiple sets of surge protector connection terminals, grounding electrode, and grounding busbar forms a multi-layered lightning protection system. The lightning arrester draws the lightning down and transmits it quickly to the grounding busbar through the grounding wire connected to its lower end. The surge protector can promptly limit overvoltage and introduce the overvoltage current into the grounding busbar through the grounding wire connected to it. Then, through the grounding wire connected to the grounding busbar, three sets of connection terminals, and three sets of grounding electrodes, the lightning current is quickly discharged into the ground. This greatly improves the lightning protection capability of the distribution box and effectively protects the internal electrical components. Secondly, the setting of two sets of shielding layers can effectively shield the electromagnetic pulse generated by lightning strikes, reduce the impact of electromagnetic interference on electrical components, ensure the normal operation of the equipment inside the distribution box, and improve the reliability and stability of the distribution box.

[0014] 2. In this utility model, by setting up a potential connection system, all conductive components inside the distribution box body form an equipotential region, eliminating potential differences, avoiding damage to the equipment from local overvoltage, and further improving the safety of the distribution box. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a lightning protection grounding distribution box is provided for this utility model;

[0016] Figure 2 This utility model provides a partial bottom view of a lightning protection grounding distribution box;

[0017] Figure 3 This utility model provides a partial front view of the structure of a lightning protection grounding distribution box.

[0018] Figure 4 This utility model provides a top view of the mounting plate of a lightning protection grounding distribution box.

[0019] Legend: 1. Distribution box body; 2. Connecting frame; 3. Sealed door; 4. Observation window; 5. Lightning arrester; 6. Connecting terminal; 7. Grounding electrode; 8. Mounting plate; 9. Shielding layer; 10. Circuit breaker; 11. Contactor; 12. Relay; 13. Potential connection system; 14. Grounding busbar; 15. Surge protector; 16. Electrical components. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a lightning protection grounding distribution box, including a distribution box body 1 and electrical components 16. A lightning arrester 5 is fixedly installed on the upper end of the distribution box body 1, and three sets of connection terminals 6 are fixedly installed on the lower end of the distribution box body 1. Each set of connection terminals 6 has a detachable grounding electrode 7 installed at its lower end. Two sets of mounting plates 8 are fixedly installed inside the distribution box body 1, and a shielding layer 9 is installed on the upper end of each of the two sets of mounting plates 8. A grounding busbar 14 and multiple sets of surge protectors are fixedly installed on the upper end of one set of mounting plates 8. 15. The grounding wire at the lower end of the lightning arrester 5 is connected to one end of the grounding busbar 14. The grounding wires at one end of multiple surge protectors 15 are all connected to the other end of the grounding busbar 14. The grounding wires at the upper end of the three sets of connection terminals 6 are all connected to the other end of the grounding busbar 14. A potential connection system 13 is fixedly installed on the upper end of one set of mounting plates 8. Multiple sets of connection wires at one end of the potential connection system 13 are respectively connected to the metal shell of the distribution box body 1, two sets of shielding layers 9, two sets of mounting plates 8 and one end of the grounding busbar 14.

[0023] The specific setup and function of this embodiment are described in detail below. The lightning arrester 5 is installed on the distribution box body 1, and the lightning arrester 5 is made of corrosion-resistant copper alloy to improve its service life and conductivity. Both sets of mounting plates 8 are installed inside the distribution box body 1. The grounding busbar 14 and multiple sets of surge protectors 15 are then installed on one of the mounting plates 8. The surge protectors 15 are multi-stage combined surge protectors, including a primary power surge protector, a secondary power surge protector, and a signal surge protector, which protect the power lines and signal lines respectively, improving the protection capability against different types of overvoltages. The output terminals of the multiple sets of surge protectors 15 are connected to the electrical components in the corresponding electrical assembly 16, and the input terminals are connected to the external power lines. Simultaneously, each set of surge protectors 15 is connected to a single terminal... The grounding wire is connected to the grounding busbar 14. Three sets of connection terminals 6 are fixed at the bottom of the distribution box body 1, and the grounding wires at the upper end of the three sets of connection terminals 6 are all connected to the grounding busbar 14. A detachable grounding electrode 7 is installed at the lower end of each set of connection terminals 6 to facilitate the replacement and maintenance of the grounding electrode 7. Then, the grounding wire connected to the lower end of the lightning arrester 5 is connected to the grounding busbar 14. The lightning arrester 5 conducts the lightning down and transmits it quickly to the grounding busbar 14 through the grounding wire connected to the lower end of the lightning arrester 5. The surge protector 15 can limit the overvoltage in time and introduce the overvoltage current into the grounding busbar 14 through the grounding wire connected to it. Then, the lightning current is quickly discharged into the ground through the grounding wire connected to the grounding busbar 14, the three sets of connection terminals 6 and the three sets of grounding electrodes 7, which greatly improves the lightning protection capability of the distribution box body 1 and effectively protects the internal electrical components.

[0024] By installing two sets of shielding layers 9 on two sets of mounting plates 8 respectively, and the shielding layers 9 are made of metal mesh with mesh size smaller than the wavelength of lightning electromagnetic pulse, a good shielding effect is achieved. The two sets of shielding layers 9 respectively wrap the circuit breaker 10, contactor 11, relay 12, potential connection system 13, grounding bus 14, multiple surge protectors 15 and electrical components 16 on the two sets of mounting plates 8 to shield the electromagnetic pulse generated by lightning. This can effectively shield the electromagnetic pulse generated by lightning, reduce the impact of electromagnetic interference on electrical components, ensure the normal operation of the equipment in the distribution box body 1, and improve the reliability and stability of the distribution box body 1.

[0025] Example 2: Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the lower end of the electrical component 16 is mounted on the upper end of another set of mounting plates 8. Each electrical component in the electrical component 16 is connected to the output terminal of multiple sets of surge protectors 15. The upper end of one set of mounting plates 8 is equipped with a circuit breaker 10, a contactor 11 and a relay 12 from left to right. Two sets of connecting brackets 2 are fixedly mounted on one side of the distribution box body 1. A sealing door 3 is hinged on the other side of the distribution box body 1. An observation window 4 is installed through one side of the sealing door 3.

[0026] The overall effect of this embodiment is that by fixing the potential connection system 13 on one of the mounting plates 8, and connecting the connection lines at the end of the potential connection system 13 to the metal shell of the distribution box body 1, the two sets of shielding layers 9, the two sets of mounting plates 8 and the grounding busbar 14 respectively, it is possible to form an equipotential region among the conductive components inside the distribution box body 1, eliminate potential differences, avoid damage to the equipment by local overvoltage, and further improve the safety of the distribution box.

[0027] By installing two sets of connecting brackets 2 on one side of the distribution box body 1, it is convenient to install the distribution box body 1. By hinged the sealing door 3 to the front end of the distribution box body 1, it is convenient to seal the distribution box body 1. Then, an observation window 4 is installed through the front end of the sealing door 3, which is convenient for staff to observe the electrical components inside the distribution box body 1.

[0028] Circuit breaker 10 is an important component in the distribution box 1 used for controlling and protecting the circuit. When the circuit experiences overload, short circuit or other faults, circuit breaker 10 can automatically disconnect the circuit to prevent the fault from spreading and avoid equipment damage or even fire caused by excessive current. It plays an effective role in protecting the electrical components and lines in the distribution box. Contactor 11 is mainly used to frequently connect and disconnect AC and DC main circuits and high-capacity control circuits. Relay 12 is an automatic control component that can automatically switch the state of the contacts according to changes in input signals such as current, voltage, temperature, pressure, etc., thereby realizing the control and protection of the circuit.

[0029] The usage and working principle of this device are as follows: First, the distribution box body 1 is installed in a suitable location using two sets of connecting brackets 2. Then, the sealing door 3 is operated to seal the opening of the distribution box body 1. Next, the lightning arrester 5 conducts the lightning strike down. The lightning arrester 5 transmits the lightning strike quickly to the grounding busbar 14 through the grounding wire connected to its lower end. The surge protector 15 can promptly limit the overvoltage and introduce the overvoltage current into the grounding busbar 14 through the grounding wire connected to it. Then, the lightning current is quickly discharged into the ground through the grounding wire connected to the grounding busbar 14, three sets of connecting terminals 6, and three sets of grounding electrodes 7, which greatly improves the lightning protection capability of the distribution box body 1 and effectively protects the internal components. The electrical components are shielded by two sets of shielding layers 9, which are made of metal mesh with mesh openings smaller than the wavelength of a lightning electromagnetic pulse to achieve a good shielding effect. The two sets of shielding layers 9 respectively wrap the circuit breakers 10, contactors 11, relays 12, potential connection systems 13, grounding busbars 14, multiple surge protectors 15 and electrical components 16 on the two sets of mounting plates 8 to shield the electromagnetic pulses generated by lightning. This effectively shields the electromagnetic pulses generated by lightning, reduces the impact of electromagnetic interference on electrical components, ensures the normal operation of the equipment in the distribution box body 1, and improves the reliability and stability of the distribution box body 1.

[0030] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A lightning protection grounding distribution box, comprising a distribution box body (1) and electrical components (16), characterized in that: A lightning arrester (5) is fixedly installed on the upper end of the distribution box body (1), and three sets of connection terminals (6) are fixedly installed on the lower end of the distribution box body (1). Each set of connection terminals (6) has a detachable grounding electrode (7) installed on the lower end. Two sets of mounting plates (8) are fixedly installed inside the distribution box body (1). A shielding layer (9) is installed on the upper end of both sets of mounting plates (8). A grounding busbar (14) and multiple sets of surge protectors (15) are fixedly installed on the upper end of one set of mounting plates (8).

2. The lightning protection grounding distribution box according to claim 1, characterized in that: The grounding wire at the lower end of the lightning arrester (5) is connected to one end of the grounding busbar (14), and the grounding wires at one end of the multiple surge protectors (15) are all connected to the other end of the grounding busbar (14).

3. A lightning protection grounding distribution box according to claim 2, characterized in that: The grounding wires at the upper end of the three sets of connection terminals (6) are all connected to the other end of the grounding busbar (14).

4. A lightning protection grounding distribution box according to claim 1, characterized in that: One of the mounting plates (8) has a potential connection system (13) fixedly installed on its upper end. Multiple sets of connecting lines at one end of the potential connection system (13) are respectively connected to the metal shell of the distribution box body (1), two sets of shielding layers (9), two sets of mounting plates (8) and one end of the grounding busbar (14).

5. A lightning protection grounding distribution box according to claim 1, characterized in that: The lower end of the electrical assembly (16) is mounted on the upper end of another set of mounting plates (8), and each electrical component in the electrical assembly (16) is connected to the output of multiple sets of surge protectors (15).

6. A lightning protection grounding distribution box according to claim 1, characterized in that: One of the mounting plates (8) has a circuit breaker (10), a contactor (11) and a relay (12) installed from left to right on the upper end. Two sets of connecting brackets (2) are fixedly installed on one side of the distribution box body (1).

7. A lightning protection grounding distribution box according to claim 6, characterized in that: A sealing door (3) is hinged to the other side of the distribution box body (1), and an observation window (4) is installed through one side of the sealing door (3).

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