Low-voltage switch cabinet electric leakage alarm structure

Abstract

The utility model relates to low -voltage switchgear technical field, and disclose a low -voltage switchgear electric leakage alarm structure, including low -voltage switchgear body, the top fixed mounting of low -voltage switchgear body has the protection box, and the protection box is located the fixed mounting of switch blade in back inner wall. Through setting resistor, neon bulb and ground wire in the installation groove of handle, when low -voltage switchgear body appears electric leakage condition, the current will flow through neon bulb through ground wire, make it emit light, thereby realizes the real -time detection and alarm of electric leakage condition, guarantees the personal safety of operator, through the switch blade installed in protection box, when neon bulb lights up, low -voltage switchgear body is in an electric leakage state at this time, at this time relevant staff will switch off the blade, cut off the circuit inside low -voltage switchgear body, and can overhaul the component and internal device of low -voltage switchgear body, further reduce the danger of low -voltage switchgear body electric leakage overhaul.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear technology, specifically to a low-voltage switchgear leakage alarm structure. Background Technology

[0002] In the operating environment of electrical equipment, low-voltage switchgear, as a key power distribution and control device, is of paramount importance for its safe and stable operation. During long-term use, low-voltage switchgear may experience leakage due to various factors such as equipment aging, line damage, and decreased insulation performance. Once leakage occurs, it will not only damage the electrical components inside the switchgear and affect the normal operation of the equipment, but may also cause serious safety accidents, such as electric shock injuries and fires, resulting in huge losses to production and life. Therefore, how to detect leakage in low-voltage switchgear in a timely manner has become an urgent problem to be solved to ensure the safe operation of equipment and the safety of personnel.

[0003] Currently, there are some leakage current detection methods for low-voltage switchgear on the market, but most of them have limitations. For example, some detection equipment is complex to install and requires professional personnel to operate and maintain, increasing the cost of use and time. Some detection methods cannot reflect the leakage current situation in real time and intuitively, requiring the use of additional detection instruments for measurement, and cannot inform operators of the leakage current situation immediately. In addition, for the handle of low-voltage switchgear, since it is a part that operators frequently touch, if the leakage current situation in this part cannot be effectively detected, it will greatly increase the risk of electric shock. To address these issues, we propose a low-voltage switchgear leakage current alarm structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a low-voltage switchgear leakage alarm structure to solve the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a low-voltage switchgear leakage alarm structure, including a low-voltage switchgear body, a protective box fixedly installed on the top of the low-voltage switchgear body, a switch knife fixedly installed on the inner wall of the back of the protective box, a low-voltage switchgear box door installed on one side of the front of the low-voltage switchgear body, a handle installed on the low-voltage switchgear box door, an installation groove opened on one side of the handle, and a plastic shell fixedly installed in the installation groove, a resistor penetrating the plastic shell installed on the right side of the plastic shell, a neon bulb installed inside the plastic shell, and a grounding wire installed inside the plastic shell.

[0006] As a preferred embodiment of this utility model, the resistor and the neon bulb are connected by a wire, the grounding wire is connected to the neon bulb at one end inside the plastic shell, and a convex lens is fixedly installed in the mounting groove on the front of the handle near the outside.

[0007] As a preferred embodiment of this utility model, the switch cabinet door is provided with a through hole, the grounding wire passes through the through hole, and the grounding wire is set as a first spring wire at the connection between the handle and the switch cabinet door.

[0008] As a preferred technical solution of this utility model, a through hole is provided on the right side wall of the low-voltage switch cabinet body, extending through and to the bottom of the low-voltage switch cabinet body. The grounding wire passes through the through hole, and the grounding wire is set as a second spring wire at the connection between the switch cabinet door and the low-voltage switch cabinet body.

[0009] As a preferred embodiment of this utility model, the protective box is equipped with a protective door on one side of the front, and the protective door is equipped with a spring-loaded handle.

[0010] As a preferred technical solution of this utility model, the top and bottom surfaces of the protective door are provided with rubber pads, the top of the protective box is provided with a wire hole, and the bottom of the protective box is provided with a through hole that extends through and into the interior of the low-voltage switch cabinet body.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This low-voltage switchgear leakage alarm structure involves installing a resistor, a neon bulb, and a grounding wire in the mounting slot of the handle. The resistor and the neon bulb are connected by a wire, and the grounding wire is connected to the neon bulb. When a leakage occurs in the low-voltage switchgear body, the current flows through the grounding wire and through the neon bulb, causing it to light up. This enables real-time detection and alarm of the leakage. Simultaneously, a convex lens is fixedly installed near the outside of the mounting slot on the front of the handle. The convex lens amplifies the light emitted by the neon bulb, allowing operators to clearly observe the leakage alarm signal even at a distance, take timely measures, effectively avoid safety accidents caused by leakage, and protect the personal safety of operators.

[0012] 2. This low-voltage switchgear leakage alarm structure features a protective door with a spring-loaded handle installed on one side of the front of the protective box. This allows operators to easily open and close the protective door and operate the switch inside the protective box. When the neon bulb illuminates, the low-voltage switchgear is in a leakage state. At this time, relevant personnel can open the protective door using the spring-loaded handle and disconnect the switch inside the protective box. This cuts off the internal circuitry of the low-voltage switchgear and allows for the inspection and maintenance of internal components, further reducing the danger of leakage during maintenance of the low-voltage switchgear. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the grounding wire structure of this utility model; Figure 3 This is a cross-sectional view of the handle structure of this utility model; Figure 4 This is a schematic diagram of the internal structure of the protective box of this utility model.

[0014] In the diagram: 1. Low-voltage switchgear body; 2. Grounding wire; 3. Switchgear box door; 4. Handle; 5. Spring-loaded handle; 6. Protective door; 7. Protective box; 8. Convex lens; 9. First spring wire; 10. Second spring wire; 11. Neon bulb; 12. Plastic shell; 13. Resistor; 14. Switch knife. Detailed Implementation

[0015] 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.

[0016] Example 1: Please refer to Figures 1-4A low-voltage switchgear leakage alarm structure includes a low-voltage switchgear body 1. A protective box 7 is bolted to the top of the low-voltage switchgear body 1. The protective box 7 can be made of plastic or other non-conductive materials. The protective box 7 has a large internal space. A switch knife 14 is fixed to the inner wall of its back by screws for easy control of the circuit inside the switchgear. A mechanical power-off method is used to further confirm that the circuit inside the low-voltage switchgear body 1 is disconnected. A low-voltage switchgear box door 3 is hinged to one side of the front of the low-voltage switchgear body 1. The low-voltage switchgear box door 3 can be opened and closed freely for easy inspection and maintenance of the switchgear. A handle 4 is screwed to the low-voltage switchgear box door 3. The handle 4 is made of conductive metal and provides a leverage point for the operator to open and close the box door. A mounting groove is opened on one side of the front of the handle 4. A plastic shell 12 is fixed in the mounting groove with glue. To protect the internal components, a resistor 13 is installed on the right side of the plastic shell 12, penetrating the plastic shell 12. The resistor 13 is fixed to the plastic shell 12 by a clip to limit the current. One side of the resistor 13 is connected to the inner right side of the mounting groove in the handle 4. A neon bulb 11 is also installed inside the plastic shell 12, fixed inside the plastic shell 12 by a clip. It will light up when current flows through it. A grounding wire 2 is also installed inside the plastic shell 12. One end of the grounding wire 2 is connected to the neon bulb 11, and the other end extends to the ground, forming a circuit with the ground. In case of leakage, the neon bulb 11 can light up through the grounding wire 2. The resistor 13 and the neon bulb 11 are connected by wires to form a complete circuit. A convex lens 8 is fixed with glue in the mounting groove on the front of the handle 4 near the outside. The convex lens 8 can magnify the light emitted by the neon bulb 11, making it easier for the operator to observe from a distance.

[0017] A through hole is provided on the switch cabinet door 3, through which the grounding wire 2 passes. The grounding wire 2 is located at the connection between the handle 4 and the switch cabinet door 3 and is set as a first spring wire 9. The first spring wire 9 has a certain elasticity and can adapt to the rotation of the handle 4 to ensure the stable connection of the grounding wire 2. A through hole is provided on the right side wall of the low-voltage switch cabinet body 1, which extends through and to the bottom of the low-voltage switch cabinet body 1. The grounding wire 2 passes through this through hole, and the grounding wire 2 is located at the connection between the switch cabinet door 3 and the low-voltage switch cabinet body 1 and is set as a second spring wire 10. The second spring wire 10 also has elasticity and can ensure that the grounding wire 2 does not break when the switch cabinet door 3 is opened and closed.

[0018] A protective door 6 is hinged to one side of the front of the protective box 7. The protective door 6 is made of plastic or other non-conductive materials. The protective door 6 can protect the switch knife 14 from external interference. The protective door 6 is equipped with a spring-loaded handle 5, which makes it convenient for operators to open and close the protective door 6. The top and bottom surfaces of the protective door 6 are provided with rubber pads. The rubber pads are elastic and extensible, which can fix the protective door 6 to the protective box 7. The top of the protective box 7 has a wire hole for external lines to enter the protective box 7 and connect to the switch knife 14. The bottom of the protective box 7 has a through hole that extends into the interior of the low-voltage switch cabinet body 1, which facilitates the layout of internal wiring.

[0019] Example 2: Please refer to Figures 1-4 The low-voltage switchgear leakage alarm structure in this embodiment is basically the same as that in Embodiment 1. The difference lies in the connection method of the grounding wire 2. In this embodiment, when the grounding wire 2 passes through the through hole in the side wall of the switchgear box door 3 and the low-voltage switchgear body 1, a detachable terminal block is used for connection. Specifically, detachable terminals block are installed at both ends of the first spring wire 9 at the connection between the switchgear box door 3 and the handle 4, and at both ends of the second spring wire 10 at the connection between the switchgear box door 3 and the low-voltage switchgear body 1. When the grounding wire 2 needs to be inspected or replaced, only the terminal block needs to be removed. There is no need to disassemble the entire structure on a large scale, which greatly improves the convenience of maintenance. The installation and connection methods of other components are the same as in Embodiment 1. The installation and connection of components such as the protective box 7, switch knife 14, low-voltage switchgear box door 3, handle 4, plastic shell 12, resistor 13, neon bulb 11, and convex lens 8 are all carried out in accordance with the method of Embodiment 1, so that the entire leakage alarm structure can work normally.

[0020] Example 3: Please refer to Figures 1-4 This embodiment improves upon Embodiment 1 by modifying the protective box 7. The protective door 6 installed on one side of the front of the protective box 7, in addition to the spring-loaded handle 5, also includes a locking device. This locking device prevents unauthorized personnel from opening the protective door 6 and misoperating the switch 14, thus improving equipment safety. Furthermore, the rubber pads on the top and bottom surfaces of the protective door 6 are made of more wear-resistant and aging-resistant materials, extending their service life. A sealing ring is added at the top wiring hole of the protective box 7 to prevent external dust and moisture from entering the protective box 7 and damaging the switch 14 and internal wiring. The installation and connection methods of other components, such as the low-voltage switch cabinet body 1, switch cabinet door 3, handle 4, plastic shell 12, resistor 13, neon bulb 11, grounding wire 2, and convex lens 8, are the same as in Embodiment 1, ensuring the stable and reliable operation of the entire low-voltage switch cabinet leakage alarm structure while maintaining safety.

[0021] Implementation effect: By installing a resistor 13, a neon bulb 11, and a grounding wire 2 in the mounting slot of the handle 4, and connecting the resistor 13 and the neon bulb 11 with a wire, and connecting the grounding wire 2 to the neon bulb 11, when a leakage occurs in the low-voltage switchgear body 1, the current will flow through the grounding wire 2 through the neon bulb 11, causing it to light up. This achieves real-time detection and alarm of leakage. At the same time, a convex lens 8 is fixedly installed near the outside of the mounting slot on the front of the handle 4. The convex lens 8 can amplify the light emitted by the neon bulb 11, allowing operators to clearly observe the leakage alarm signal even at a distance, take timely measures, effectively avoid safety accidents caused by leakage, and ensure the personal safety of operators and the normal operation of equipment.

[0022] A protective door 6 with a spring-loaded handle 5 is installed on one side of the front of the protective box 7, which is convenient for operators to open and close. This allows them to operate the switch knife 14 inside the protective box 7. When the neon bulb 11 is lit, the low-voltage switch cabinet body 1 is in a leakage state. At this time, relevant personnel can open the protective door 6 through the spring-loaded handle 5 and disconnect the switch knife 14 inside the protective box 7. This cuts off the internal circuit of the low-voltage switch cabinet body 1 and allows for the inspection and maintenance of the internal components of the low-voltage switch cabinet body 1, further reducing the danger of leakage maintenance of the low-voltage switch cabinet body 1.

[0023] 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 low-voltage switchgear leakage alarm structure, comprising a low-voltage switchgear body (1), characterized in that: A protective box (7) is fixedly installed on the top of the low-voltage switchgear body (1). A switch knife (14) is fixedly installed on the inner wall of the back of the protective box (7). A low-voltage switchgear box door (3) is installed on one side of the front of the low-voltage switchgear body (1). A handle (4) is installed on the low-voltage switchgear box door (3). An installation groove is opened on one side of the front of the handle (4), and a plastic shell (12) is fixedly installed in the installation groove. A resistor (13) is installed on the right side of the plastic shell (12) and penetrates the plastic shell (12). A neon bulb (11) is also installed inside the plastic shell (12), and a grounding wire (2) is also installed inside the plastic shell (12).

2. The low-voltage switchgear leakage alarm structure according to claim 1, characterized in that: The resistor (13) and the neon bulb (11) are connected by a wire. The grounding wire (2) is connected to the neon bulb (11) at one end inside the plastic shell (12). A convex lens (8) is fixedly installed in the mounting groove on the front of the handle (4) near the outside.

3. The low-voltage switchgear leakage alarm structure according to claim 1, characterized in that: The switch cabinet door (3) has a through hole, and the grounding wire (2) passes through the through hole. The grounding wire (2) is located at the connection between the handle (4) and the switch cabinet door (3) and is set as the first spring wire (9).

4. The low-voltage switchgear leakage alarm structure according to claim 1, characterized in that: The right side wall of the low-voltage switch cabinet body (1) has a through hole that extends to the bottom of the low-voltage switch cabinet body (1). The grounding wire (2) passes through the through hole, and the grounding wire (2) is set as a second spring wire (10) at the connection between the switch cabinet door (3) and the low-voltage switch cabinet body (1).

5. The low-voltage switchgear leakage alarm structure according to claim 1, characterized in that: The protective box (7) has a protective door (6) installed on one side of the front, and a spring handle (5) is installed on the protective door (6).

6. The low-voltage switchgear leakage alarm structure according to claim 5, characterized in that: The top and bottom surfaces of the protective door (6) are provided with rubber pads. The top of the protective box (7) is provided with a wire hole, and the bottom of the protective box (7) is provided with a through hole that extends through and into the interior of the low-voltage switch cabinet body (1).

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