Asymmetric current source grounding fault detection device

Abstract

The utility model discloses an asymmetric current source ground fault detection device, which relates to the technical field of asymmetric current source ground fault detection devices and particularly comprises a detection device shell, a first iron block is fixedly connected to the inner side wall of a detection cavity, and a second iron block is slidably connected to the inner side wall of the detection cavity. A detection coil is wound on the outer surface of the second iron block, a hanging hole is formed in the upper surface of the detection device shell, the second iron block is arranged on the outer surface of the second iron block, a first wedge-shaped sliding block is arranged at one end of the second iron block, a second wedge-shaped sliding block is slidably connected to the upper surface of the first wedge-shaped sliding block, and a spring is arranged on the lower surface of the first wedge-shaped sliding block; an opening button is arranged in front of the second wedge-shaped sliding block, a T-shaped clamping block is arranged behind the detection device shell, the outer surface of the T-shaped clamping block is slidably connected with a mounting plate, and the device has the beneficial effects that real-time detection of the cable is facilitated, and fixed mounting is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of asymmetric current source grounding fault detection devices, in particular to an asymmetric current source grounding fault detection device. Background Art

[0002] Most of my country's power systems adopt the operation mode of ungrounded neutral point or grounding through arc suppression coil, which is a small current grounding system; in the small current grounding system, single-phase grounding is a common fault; in actual operation, distribution network lines are long and widely distributed, and there are distribution network lines in various complex terrain conditions such as cities, rural areas, and mountainous areas; the above characteristics of distribution network lines determine that single-phase grounding faults are multiple, hidden, and complex, especially in severe weather conditions such as rainy seasons, strong winds and snow, single-phase grounding faults occur more frequently and are more difficult to find. In order to ensure the safe operation of the circuit, an electrically asymmetric current source grounding fault detection device is required.

[0003] The existing asymmetric current source grounding fault detection is mostly performed manually during use. During the detection, it is necessary to use an ammeter or other equipment to cut the power cord and then connect the neutral wire, live wire and ground wire ends of the wire for measurement. The measurement method is relatively inconvenient, and the existing asymmetric current source grounding fault detection device is not convenient for fixed installation and often needs to be held by hand, making it difficult to continuously detect the power system. Therefore, the existing asymmetric current source grounding fault detection device has the disadvantages of being inconvenient for real-time detection of cables and being inconvenient for fixed installation. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an asymmetric current source ground fault detection device, which solves the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] An asymmetric current source ground fault detection device comprises a detection device housing, a display screen, an indicator light and an adjustment button are respectively arranged in front of the detection device housing, a flash light is arranged in front of the detection device housing below the adjustment button, a speaker is arranged on the side of the detection device housing, a detection cavity is arranged in front of the detection device housing, an outer cover is hingedly connected to the outer side of the detection cavity, a rubber pad is arranged on the inner side wall of the detection cavity, a wire to be detected is arranged on the inner side wall of the rubber pad, a first iron block is fixedly connected to the inner side wall of the detection cavity, a second iron block is slidably connected to the inner side wall of the detection cavity, a detection coil is wound around the outer surface of the second iron block, and the detection cavity is fixedly connected to the inner side wall of the detection cavity, and a second iron block is slidably connected to the inner side wall of the detection cavity. The outer surfaces of the first iron block and the second iron block are both provided with protective shells, the upper surface of the detection device shell is provided with a hanging hole, the outer surface of the second iron block is provided with a second iron block, one end of the second iron block is provided with a first wedge-shaped slider, the upper surface of the first wedge-shaped slider is slidably connected with the second wedge-shaped slider, the lower surface of the first wedge-shaped slider is provided with a spring, the front of the second wedge-shaped slider is provided with an opening button, the rear of the detection device shell is provided with a T-shaped clamping block, the outer surface of the T-shaped clamping block is slidably connected with a mounting plate, the rear of the mounting plate is provided with double-sided tape, the front of the mounting plate is provided with a T-shaped slot, and the outer surface of the mounting plate is provided with bolt holes.

[0009] Optionally, the ends of the first iron block and the second iron block are both semicircularly arranged, and one end of the first iron block abuts against one end of the second iron block.

[0010] Optionally, the other end of the second iron block is slidably connected to the outer surface of the first iron block, and three of the first iron block and the second iron block are provided and are evenly distributed in a rectangular array.

[0011] Optionally, an ammeter is provided on the inner wall of the detection device housing, a main control module is provided on the inner wall of the detection device housing, both ends of the three detection coils are electrically connected to the ammeter through wires, and the ammeter is electrically connected to the main control module through wires.

[0012] Optionally, the outer surface of the first wedge-shaped slider is slidably connected to the inner wall of the detection device housing, one end of the spring abuts against the inner wall of the detection device housing, and the outer surface of the second wedge-shaped slider is slidably connected to the inner wall of the detection device housing.

[0013] Optionally, the outer surface of the T-shaped block is slidably connected to the inner wall of the T-shaped slot, and four bolt holes are provided and evenly distributed in a rectangular array.

[0014] (III) Beneficial effects

[0015] The utility model provides an asymmetric current source ground fault detection device, which has the following beneficial effects:

[0016] 1. This asymmetric current source grounding fault detection device, through the setting of the detection device housing, the detection cavity, the first iron block, the second iron block and the detection coil, enables the asymmetric current source grounding fault detection device to have the effect of not being convenient for non-destructive detection of cables. Through the coordinated setting of three groups of first iron blocks, second iron blocks and detection coils, during use, the currents of the neutral wire, the live wire and the grounding wire of the cable can be detected in real time respectively, and by comparing the currents between the wires, it is automatically determined whether the grounding wire is short-circuited, thereby achieving the purpose of facilitating real-time detection of the cable.

[0017] 2. This asymmetric current source grounding fault detection device has the effect of being easy to install and fix through the setting of hanging holes, T-shaped blocks, mounting plates and double-sided tape. Through the coordinated setting of T-shaped blocks, mounting plates, double-sided tape and T-shaped slots, the device can be directly pasted on the wall through double-sided tape during use, or after fixing the mounting plate with screws, the detection device housing can be fixed on the wall through the connection between the T-shaped blocks and the T-shaped slots. The device can also be directly hung on the hook by the hanging hole hook, and does not need to be held hand-held during detection, thereby achieving the purpose of easy fixed installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model from the rear;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the detection state of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first iron block and the second iron block of the utility model;

[0022] Figure 5 This is a schematic structural diagram of the internal cross-section of the first iron block and the second iron block of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the mounting plate of the utility model.

[0024] In the figure: 1. detection device housing; 2. display screen; 3. indicator light; 4. adjustment button; 5. flash light; 6. speaker; 7. detection chamber; 8. outer cover; 9. wire to be detected; 10. rubber pad; 11. first iron block; 12. second iron block; 13. detection coil; 14. protective shell; 15. hanging hole; 16. connecting rod; 17. first wedge-shaped slider; 18. second wedge-shaped slider; 19. spring; 20. opening button; 21. T-shaped block; 22. mounting plate; 23. double-sided tape; 24. T-shaped slot; 25. bolt hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example 1

[0027] The utility model provides a technical solution: an asymmetric current source ground fault detection device, comprising a detection device housing 1, an ammeter is arranged on the inner side wall of the detection device housing 1, a master control module is arranged on the inner side wall of the detection device housing 1, two ends of three detection coils 13 are electrically connected to the ammeter through wires, the ammeter is electrically connected to the master control module through wires, a display screen 2, an indicator light 3 and an adjustment button 4 are arranged on the front of the detection device housing 1, a flash light 5 is arranged on the front of the detection device housing 1 below the adjustment button 4, a speaker 6 is arranged on the side of the detection device housing 1, a detection cavity 7 is arranged on the front of the detection device housing 1, an outer cover 8 is hinged on the outer side of the detection cavity 7, a rubber pad 10 is arranged on the inner side wall of the detection cavity 7, a wire 9 to be detected is arranged on the inner side wall of the rubber pad 10, a first iron block 11 is fixedly connected to the inner side wall of the detection cavity 7, the ends of the first iron block 11 and the second iron block 12 are both arranged in a semicircular shape, one end of the first iron block 11 and the second iron block 12 are arranged in a semicircular shape, and one end of the first iron block 11 and the second iron block 12 are arranged in a semicircular shape. One end of the second iron block 12 is abutted, and the other end of the second iron block 12 is slidably connected to the outer surface of the first iron block 11. The first iron block 11 and the second iron block 12 are each provided with three and are evenly distributed in a rectangular array. The inner wall of the detection cavity 7 is slidably connected with the second iron block 12, and the outer surface of the second iron block 12 is wound with a detection coil 13. The outer surfaces of the first iron block 11 and the second iron block 12 are both provided with a protective shell 14. The outer surface of the second iron block 12 is provided with the second iron block 12. One end of the second iron block 12 is provided with a first wedge-shaped slider 17, and the outer surface of the first wedge-shaped slider 17 is slidably connected to the inner side wall of the detection device housing 1. One end of the spring 19 abuts against the inner side wall of the detection device housing 1, and the outer surface of the second wedge-shaped slider 18 is slidably connected to the inner side wall of the detection device housing 1. The upper surface of the first wedge-shaped slider 17 is slidably connected to the second wedge-shaped slider 18, and the lower surface of the first wedge-shaped slider 17 is provided with a spring 19. The front of the second wedge-shaped slider 18 is provided with an opening button 20.

[0028] In order to facilitate real-time detection of cables, as shown in the attached Figures 1 to 6As shown, the present application adopts the following structure. Through the arrangement of the detection device housing 1, the detection cavity 7, the first iron block 11, the second iron block 12 and the detection coil 13, the asymmetric current source ground fault detection device has the effect of being inconvenient to perform non-destructive detection on the cable. When in use, by pressing the opening button 20, the second wedge-shaped slider 18 is driven to move to the rear side, and at this time, the first wedge-shaped slider 17 is squeezed to move downward, so that the three second iron blocks 12 are pulled downward and opened through the connecting rod 16, and the neutral wire, the live wire and the ground wire of the wire are respectively placed inside the three groups of the first iron block 11 and the second iron block 12. At this time, the three groups of wires can act as the primary coil of the current transformer, and the detection line The coil 13 becomes a secondary coil. When current passes through the wire, the current will induce current in the secondary coil, and then the current size is detected by the ammeter inside the detection device housing 1. The sizes of the three currents are compared by the master control module. After exceeding the preset value, the flash lamp 5 flashes strongly and an alarm sound is sounded through the speaker 6. Through the coordinated setting of the three groups of the first iron block 11, the second iron block 12 and the detection coil 13, the current of the neutral wire, the live wire and the ground wire of the cable can be detected in real time during use. By comparing the currents between the wires, it is automatically determined whether the ground wire is short-circuited, thereby achieving the purpose of facilitating real-time detection of the cable;

[0029] Example 2

[0030] The utility model provides a technical solution: a hanging hole 15 is arranged on the upper surface of a detection device housing 1, a T-shaped block 21 is arranged at the rear of the detection device housing 1, the outer surface of the T-shaped block 21 is slidably connected to the inner wall of a T-shaped slot 24, four bolt holes 25 are arranged and evenly distributed in a rectangular array, the outer surface of the T-shaped block 21 is slidably connected to a mounting plate 22, a double-sided tape 23 is arranged at the rear of the mounting plate 22, a T-shaped slot 24 is arranged at the front of the mounting plate 22, and bolt holes 25 are opened on the outer surface of the mounting plate 22.

[0031] In order to facilitate fixed installation, Figures 1 to 6As shown, the present application adopts the following structure. Through the arrangement of the hanging hole 15, the T-shaped block 21, the mounting plate 22 and the double-sided adhesive tape 23, the asymmetric current source grounding fault detection device has the effect of being easy to install and fix. Through the coordinated arrangement of the T-shaped block 21, the mounting plate 22, the double-sided adhesive tape 23 and the T-shaped slot 24, the device can be directly pasted on the wall through the double-sided adhesive tape 23 during use, that is, the protective film of the double-sided adhesive tape 23 is torn off and pasted on the wall, and then the T-shaped block 21 and the T-shaped slot 24 behind the detection device housing 1 are clamped together, or after the screw is inserted into the bolt hole 25 to fix the mounting plate 22, the detection device housing 1 is fixed to the wall through the clamping connection between the T-shaped block 21 and the T-shaped slot 24. The device can also directly hook the hanging hole 15 on the hook, and does not need to be held during detection, thereby achieving the purpose of easy fixed installation.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An asymmetric current source ground fault detection device, comprising a detection device housing (1), characterized in that: The front of the detection device housing (1) is respectively provided with a display screen (2), an indicator light (3) and an adjustment button (4); the front of the detection device housing (1) is provided with a flash light (5) below the adjustment button (4); the side of the detection device housing (1) is provided with a speaker (6); the front of the detection device housing (1) is provided with a detection chamber (7); the outer side of the detection chamber (7) is hinged with an outer cover (8); the inner side wall of the detection chamber (7) is provided with a rubber pad (10); the inner side wall of the rubber pad (10) is provided with a wire to be detected (9); the inner side wall of the detection chamber (7) is fixedly connected with a first iron block (11); the inner side wall of the detection chamber (7) is slidably connected with a second iron block (12); the outer surface of the second iron block (12) is wound with a detection coil (13); the outer surfaces of the first iron block (11) and the second iron block (12) are both provided with A protective shell (14) is provided, a hanging hole (15) is provided on the upper surface of the detection device housing (1), a second iron block (12) is provided on the outer surface of the second iron block (12), a first wedge-shaped slider (17) is provided at one end of the second iron block (12), a second wedge-shaped slider (18) is slidably connected to the upper surface of the first wedge-shaped slider (17), a spring (19) is provided on the lower surface of the first wedge-shaped slider (17), an opening button (20) is provided in front of the second wedge-shaped slider (18), a T-shaped clamping block (21) is provided at the rear of the detection device housing (1), a mounting plate (22) is slidably connected to the outer surface of the T-shaped clamping block (21), a double-sided adhesive (23) is provided at the rear of the mounting plate (22), a T-shaped clamping groove (24) is provided in front of the mounting plate (22), and a bolt hole (25) is provided on the outer surface of the mounting plate (22).

2. The asymmetric current source ground fault detection device according to claim 1, characterized in that: The ends of the first iron block (11) and the second iron block (12) are both arranged in a semicircular shape, and one end of the first iron block (11) abuts against one end of the second iron block (12).

3. The asymmetric current source ground fault detection device according to claim 1, characterized in that: The other end of the second iron block (12) is slidably connected to the outer surface of the first iron block (11), and three of the first iron block (11) and the second iron block (12) are arranged and evenly distributed in a rectangular array.

4. The asymmetric current source ground fault detection device according to claim 1, characterized in that: An ammeter is arranged on the inner wall of the detection device housing (1), and a master control module is arranged on the inner wall of the detection device housing (1); both ends of the three detection coils (13) are electrically connected to the ammeter via wires, and the ammeter is electrically connected to the master control module via wires.

5. The asymmetric current source ground fault detection device according to claim 1, characterized in that: The outer surface of the first wedge-shaped slider (17) is slidably connected to the inner wall of the detection device housing (1), one end of the spring (19) abuts against the inner wall of the detection device housing (1), and the outer surface of the second wedge-shaped slider (18) is slidably connected to the inner wall of the detection device housing (1).

6. The asymmetric current source ground fault detection device according to claim 1, characterized in that: The outer surface of the T-shaped clamping block (21) is slidably connected to the inner wall of the T-shaped clamping groove (24), and four bolt holes (25) are provided and evenly distributed in a rectangular array.

Images