Electric leakage alarm for power distribution cabinet

Abstract

The utility model belongs to the field of electric leakage alarms, particularly relates to an electric leakage alarm used on a power distribution cabinet, and provides the following scheme aiming at the problems that a circuit of an existing alarm lacks protection, the circuit is easy to age or is touched by people in the long-time use process, and the service life of the alarm is shortened. Comprising an alarm body and a substrate fixed on one side of the power distribution cabinet, one side of the substrate is fixedly connected with a C-shaped protective frame, the protective frame is a transparent acrylic plate, the inner wall of one side of the protective frame is fixedly connected with a guide rail, and one side of the alarm body is fixedly connected with a sliding block. The alarm body is installed in the power distribution cabinet, line exposure is avoided, the service life of the line is prolonged, the using effect of the alarm body is improved, meanwhile, the line box can be used for sealing an installation hole, allowing the line box to penetrate through, in the power distribution cabinet, the waterproof effect of the power distribution cabinet is kept, and rainwater is prevented from entering the power distribution cabinet.

Description

Technical Field

[0001] This utility model relates to the field of leakage current alarm technology, and in particular to a leakage current alarm for use in power distribution cabinets. Background Technology

[0002] As the name suggests, a leakage current alarm is a device used to detect whether there is leakage in a circuit. When there is leakage in the circuit, the leakage current will flow back to the neutral line through the leakage current alarm, causing the leakage current alarm to sound. During the use of the power distribution cabinet, the leakage current alarm can sound an alarm to prevent operators from being electrocuted.

[0003] A search revealed a leakage current alarm device for a distribution cabinet disclosed in announcement number CN211743766U. While the device can reduce the routing of other circuits and increase the wiring distance, the alarm is installed outside the distribution cabinet, and its wiring lacks protection. Over a long period of use, the wiring is prone to aging or being touched by people, which reduces the lifespan of the alarm. Therefore, a leakage current alarm device for distribution cabinets is proposed. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of existing alarm circuits, which lack protection and are prone to aging or human contact during long-term use, thus reducing the lifespan of the alarm. The proposed invention is a leakage current alarm for use on power distribution cabinets.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A leakage current alarm for use on a power distribution cabinet includes an alarm body and a base plate fixed to one side of the power distribution cabinet. A C-shaped protective frame is fixedly connected to one side of the base plate. The protective frame is made of transparent acrylic sheet. A guide rail is fixedly connected to the inner wall of one side of the protective frame. A slider is fixedly connected to one side of the alarm body. The slider is slidably connected to the guide rail.

[0007] The bottom of the protective frame has a cable outlet hole, and a junction box is fixedly connected to the bottom of the cable outlet hole. The end of the junction box away from the cable outlet hole is horizontally set and passes through the power distribution cabinet. Fixing sleeves are welded around the junction box, and the fixing sleeves are fixed to the power distribution cabinet by bolts.

[0008] As a further embodiment of this utility model, a retaining plate for sealing the protective frame is fixed to one side by bolts.

[0009] As a further embodiment of this utility model, guide blocks are fixedly connected to both ends of the protective frame, and the card plate is inserted into the guide blocks.

[0010] As a further embodiment of this utility model, a positioning plate is fixedly connected to the bottom inner wall of the protective frame. The positioning plate is located on one side of the cable outlet hole. A fixing plate is fixedly connected to the bottom inner wall of the protective frame. A plurality of through threaded rods are threadedly connected to one side of the fixing plate. One end of each threaded rod is rotatably connected to a wire clamp.

[0011] As a further embodiment of this utility model, a support plate is fixedly connected to one side of the substrate, and a protective cover of transparent material is fixedly connected to the top of the support plate.

[0012] As a further improvement of this utility model, multiple through-holes are provided on one side of the card plate and one side of the protective frame, and the heat dissipation holes are all located inside the protective cover.

[0013] As a further embodiment of this utility model, one end of the junction box is fixedly connected to an arc-shaped guide plate, which is located inside the power distribution cabinet.

[0014] As a further improvement of this utility model, a sealing gasket is adhered to one side of the fixing sleeve, and the sealing gasket abuts against the power distribution cabinet.

[0015] In this application, the side of the distribution cabinet is provided with mounting holes. The junction box is inserted into the mounting holes, and then the base plate and protective frame are placed vertically against the distribution cabinet and fixed with bolts. At the same time, the junction box is fixed to one side of the distribution cabinet by a fixing sleeve to maintain the waterproof effect of the distribution cabinet and prevent rainwater from entering. Then, the alarm body is fixed to the guide rail. After fixing, the wire of the alarm body passes through the bottom outlet hole, and then enters the distribution cabinet for installation after being guided by the junction box, thereby avoiding exposed wires, increasing the service life of the wires, and improving the performance of the alarm body. Rotating the threaded rod causes the threaded rod to drive the wire clamp to clamp the wire, increasing the stability of the wire. After the alarm body is installed, the clamp plate is inserted into the guide block and then locked with bolts. Finally, the protective cover is fixed to the support plate to prevent rainwater from entering the device through the heat dissipation holes.

[0016] Beneficial effects: In this utility model, the leakage current alarm for the power distribution cabinet, by installing a junction box at the bottom of the protective frame, allows the wires on the alarm body to be guided through the junction box and installed inside the power distribution cabinet, thereby avoiding exposed wires, increasing the service life of the wires, and improving the performance of the alarm body.

[0017] In this utility model, the leakage current alarm used on the power distribution cabinet, through the setting of the fixing sleeve installed on the junction box, enables the junction box to seal the mounting hole through which the junction box passes on the power distribution cabinet, maintains the waterproof effect of the power distribution cabinet, and prevents rainwater from entering.

[0018] In this invention, the wires can be guided through the junction box and installed inside the distribution cabinet, thereby avoiding exposed wires, increasing the service life of the wires, and improving the performance of the alarm device. At the same time, the junction box can seal the installation holes through which the junction box passes on the distribution cabinet, maintaining the waterproof effect of the distribution cabinet and preventing rainwater from entering. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation state structure of the leakage current alarm device for power distribution cabinet proposed in this utility model;

[0020] Figure 2 This is an exploded structural diagram of the leakage current alarm device for use on a distribution cabinet proposed in this utility model.

[0021] Figure 3 This is a cross-sectional view of the leakage current alarm device for use on a distribution cabinet proposed in this utility model.

[0022] In the diagram: 1. Distribution cabinet; 2. Base plate; 3. Protective cover; 4. Support plate; 5. Card plate; 6. Heat dissipation hole; 7. Protective frame; 8. Guide block; 9. Guide rail; 10. Slider; 11. Alarm body; 12. Junction box; 13. Outlet hole; 14. Fixing sleeve; 15. Positioning plate; 16. Fixing plate; 17. Threaded rod; 18. Wire clamp; 19. Guide plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1, referring to Figures 1-3 The alarm includes: an alarm body 11 and a base plate 2 fixed to one side of the distribution cabinet 1. A C-shaped protective frame 7 is fixedly connected to one side of the base plate 2. The protective frame 7 is a transparent acrylic plate for easy observation. A guide rail 9 is fixedly connected to the inner wall of one side of the protective frame 7. A slider 10 is fixedly connected to one side of the alarm body 11. The slider 10 is slidably connected to the guide rail 9. The slider 10 and the guide rail 9 cooperate to facilitate the installation of the alarm body 11.

[0025] The bottom of the protective frame 7 has a wire outlet hole 13, and a junction box 12 is fixedly connected to the bottom of the wire outlet hole 13. The end of the junction box 12 away from the wire outlet hole 13 is horizontal and passes through the distribution cabinet 1. The top of the junction box 12 is vertical and the middle is inclined to facilitate the passage of wires. Fixing sleeves 14 are welded around the junction box 12. The fixing sleeves 14 are fixed to the distribution cabinet 1 with bolts. The junction box 12 is fixed to one side of the distribution cabinet 1 by the fixing sleeves 14 to maintain the waterproof effect of the distribution cabinet 1 and prevent rainwater from entering. At the same time, the junction box 12 prevents the wires from being exposed, increases the service life of the wires, and improves the performance of the alarm body 11.

[0026] In this utility model, guide blocks 8 are fixedly connected to both ends of the protective frame 7, and the clamping plate 5 is inserted into the guide blocks 8. The installation stability of the clamping plate 5 is increased by setting the guide blocks 8.

[0027] In particular, a positioning plate 15 is fixedly connected to the bottom inner wall of the protective frame 7. The positioning plate 15 is located on one side of the cable outlet hole 13. A fixing plate 16 is fixedly connected to the bottom inner wall of the protective frame 7. A plurality of through threaded rods 17 are threadedly connected to one side of the fixing plate 16. A wire clamp 18 is rotatably connected to one end of each threaded rod 17. When the threaded rod 17 is rotated, the threaded rod 17 drives the wire clamp 18 to clamp the line, thereby increasing the stability of the wire.

[0028] This application can be used on power distribution cabinets, or in other fields applicable to this application.

[0029] Example 2, Reference Figures 1-3 An improvement based on Example 1: The leakage alarm used on the power distribution cabinet has a retaining plate 5 for sealing the retaining frame 7 by bolts on one side. The retaining plate 5 is made of transparent acrylic and has a waterproof effect.

[0030] It should be noted that a support plate 4 is fixedly connected to one side of the substrate 2, and a transparent protective cover 3 is fixedly connected to the top of the support plate 4. The protective cover 3 further increases the rainproof capability of the device.

[0031] In this utility model, multiple through-holes 6 are provided on one side of the card plate 5 and one side of the protective frame 7. The heat dissipation holes 6 are all located inside the protective cover 3. The heat dissipation holes 6 facilitate air circulation and also facilitate sound transmission.

[0032] In particular, one end of the junction box 12 is fixedly connected to an arc-shaped guide plate 19, which is located inside the distribution cabinet 1. The guide plate 19 guides the wires to prevent them from being scratched.

[0033] It should be noted that a sealing gasket is adhered to one side of the fixing sleeve 14. The sealing gasket abuts against the distribution cabinet 1, and the sealing gasket increases the sealing effect of the fixing sleeve 14.

[0034] However, as is well known to those skilled in the art, the working principle and wiring method of the alarm body 11 are commonplace and are all conventional means or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A leakage current alarm for use on a distribution cabinet, comprising an alarm body (11) and a base plate (2) fixed to one side of the distribution cabinet (1), characterized in that, A C-shaped protective frame (7) is fixedly connected to one side of the substrate (2). The protective frame (7) is a transparent acrylic plate. A guide rail (9) is fixedly connected to the inner wall of one side of the protective frame (7). A slider (10) is fixedly connected to one side of the alarm body (11). The slider (10) is slidably connected to the guide rail (9). The bottom of the protective frame (7) is provided with a wire outlet hole (13), and a wire box (12) is fixedly connected to the bottom of the wire outlet hole (13). The end of the wire box (12) away from the wire outlet hole (13) is horizontally set and passes through the power distribution cabinet (1). A fixing sleeve (14) is welded around the wire box (12), and the fixing sleeve (14) is fixed to the power distribution cabinet (1) by bolts.

2. The leakage current alarm for a power distribution cabinet according to claim 1, characterized in that, One side of the protective frame (7) is fixed with a clamp (5) for sealing the protective frame (7) by bolts.

3. The leakage current alarm for a distribution cabinet according to claim 2, characterized in that, Guide blocks (8) are fixedly connected to both ends of the protective frame (7), and the card plate (5) is inserted into the guide block (8).

4. The leakage current alarm for a power distribution cabinet according to claim 1, characterized in that, The bottom inner wall of the protective frame (7) is fixedly connected to a positioning plate (15), which is located on one side of the outlet hole (13). The bottom inner wall of the protective frame (7) is fixedly connected to a fixing plate (16), and one side of the fixing plate (16) is threadedly connected to multiple through threaded rods (17). One end of each threaded rod (17) is rotatably connected to a wire clip (18).

5. The leakage current alarm for a distribution cabinet according to claim 3, characterized in that, A support plate (4) is fixedly connected to one side of the substrate (2), and a protective cover (3) of transparent material is fixedly connected to the top of the support plate (4).

6. The leakage current alarm for a distribution cabinet according to claim 5, characterized in that, Multiple through-holes (6) are provided on one side of the card plate (5) and one side of the protective frame (7), and the heat dissipation holes (6) are all located inside the protective cover (3).

7. The leakage current alarm for a distribution cabinet according to claim 1, characterized in that, One end of the junction box (12) is fixedly connected to an arc-shaped guide plate (19), which is located inside the distribution cabinet (1).

8. The leakage current alarm for a distribution cabinet according to claim 1, characterized in that, A sealing gasket is adhered to one side of the fixing sleeve (14), and the sealing gasket abuts against the power distribution cabinet (1).

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