Live detection device for ring main unit

Abstract

The utility model relates to the technical field of live-line detection of ring main units, in particular to a live-line detection device of a ring main unit, which comprises a live-line detection device body, limiting holes are symmetrically arranged at one end of the live-line detection device body, and contacts are arranged in the limiting holes. According to the utility model, through the arrangement of the live detection device body, the connecting seat, the telescopic rod, the fixing ring, the limiting ring, the adjusting rod, the threaded groove, the threaded rod, the handle, the grip and other components, the handle is held firstly, then the grip is rotated, and the contact is fixed on the outer side of the spring. The handle drives the adjusting rod and the limiting ring to rotate on the inner side of the fixing ring, the adjusting rod drives the threaded groove to rotate together, the threaded rod extends out of the interior of the adjusting rod along with rotation of the threaded groove, and the threaded rod drives the telescopic rod, the connecting base and the live detection device body to move far away along with extension of the threaded rod. And the telescopic rod is stretched in the process.

Description

Technical Field

[0001] This utility model relates to the field of live detection technology for ring main units, specifically to a live detection device for ring main units. Background Technology

[0002] A ring main unit live-line detection device is a device used to detect whether a ring main unit has partial discharge when it is energized. This device usually combines multiple sensors and technologies to achieve comprehensive monitoring of the insulation status inside the ring main unit.

[0003] Existing handheld live-line testing devices require workers to hold the device while testing the ring main unit. If leakage occurs at this time, there is a risk of electric shock when the handheld device is close to the ring main unit, which is very dangerous. Therefore, a live-line testing device for ring main units is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a live detection device for ring main units to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A live-line detection device for a ring main unit includes a live-line detection device body. One end of the live-line detection device body has symmetrically arranged limiting holes. Contacts are located inside the limiting holes. A spring located outside the contact is fixedly connected inside the limiting holes. A detection head located inside the limiting holes is fixedly connected to the end of the spring away from the contact. Limiting grooves are located on both sides of the limiting holes inside the live-line detection device body. Limiting blocks are slidably connected inside the limiting grooves. A connecting seat is fixedly connected to the end of the live-line detection device body away from the detection head. A telescopic rod is fixedly connected to the end of the connecting seat away from the live-line detection device body. A fixed ring is fixedly connected to the end of the telescopic rod away from the connecting seat. A limiting ring is rotatably connected inside the fixed ring. An adjusting rod is fixedly connected to the inside of the limiting ring. One end of the adjusting rod has a threaded groove, and a threaded rod is helically connected inside the threaded groove.

[0007] Preferably, a handle is fixedly connected to the outer side of the fixing ring, and a grip is fixedly connected to the end of the adjusting rod away from the connecting seat.

[0008] Preferably, there are four limiting blocks, and two groups of two are formed. Each group of limiting blocks is symmetrically and fixedly connected to the outside of the detection head.

[0009] Preferably, there are two springs, which are symmetrically arranged between the body of the live detection device and the detection head.

[0010] Preferably, the detection head and the limiting hole are a set, and there are two sets in total. The outer dimensions of the detection head and the inner dimensions of the limiting hole are matched.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, the live-line detection device body, connecting seat, telescopic rod, fixed ring, limiting ring, adjusting rod, threaded groove, threaded rod, handle, and grip are configured. First, the handle is held, and then the grip is rotated. The grip drives the adjusting rod and limiting ring to rotate inside the fixed ring. The adjusting rod drives the threaded groove to rotate as well. As the threaded groove rotates, the threaded rod extends out from inside the adjusting rod. As the threaded rod extends, it drives the telescopic rod, connecting seat, and live-line detection device body to move to a distance. The telescopic rod is also stretched during this process. The threaded rod moves linearly under the guidance of the connecting seat, telescopic rod, and fixed ring. Through the above operation, the effect of live-line detection of ring main units can be achieved by workers at a distance. This solves the problem that existing handheld live-line detection devices require workers to hold the live-line detection device to detect the ring main unit. If leakage occurs at this time, there is a risk of electric shock when the handheld live-line detection device is close to the ring main unit, which is very dangerous.

[0013] 2. In this utility model, when the live-line detection device body approaches the ring main unit, the detection head will contact the ring main unit. Then, the live-line detection device body is pushed to move by the adjusting rod. As the live-line detection device body moves, the detection head will retract into the limiting hole. The detection head will drive the limiting block to move in the limiting groove, guiding the detection head and preventing it from falling off. After the detection head enters the limiting hole, it will compress the spring, and finally the detection head will contact the contact point, thereby connecting the detection head and the live-line detection device body. Then, the live-line detection device body can be used to perform live detection on the ring main unit. The limiting hole and spring can play a buffering role to avoid damage to the detection head caused by hard impact. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of this utility model in use.

[0017] In the diagram: 1. Live detection device body; 2. Limiting hole; 3. Contact; 4. Spring; 5. Detection head; 6. Limiting groove; 7. Limiting block; 8. Connecting seat; 9. Telescopic rod; 10. Fixing ring; 11. Limiting ring; 12. Adjusting rod; 13. Threaded groove; 14. Threaded rod; 15. Handle; 16. Grip. Detailed Implementation

[0018] 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.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0021] Please see Figure 1-3 This utility model provides a technical solution:

[0022] A live-line detection device for a ring main unit includes a live-line detection device body 1. One end of the live-line detection device body 1 has symmetrically arranged limiting holes 2. The limiting holes 2 have contacts 3 inside. A spring 4 located outside the contacts 3 is fixedly connected inside the limiting holes 2. The end of the spring 4 away from the contacts 3 is fixedly connected to a detection head 5 located inside the limiting holes 2. The live-line detection device body 1 has limiting grooves 6 located on both sides of the limiting holes 2 inside. Limiting blocks 7 are slidably connected inside the limiting grooves 6. A connecting seat 8 is fixedly connected to the end of the live-line detection device body 1 away from the detection head 5. A telescopic rod 9 is fixedly connected to the end of the connecting seat 8 away from the live-line detection device body 1. A fixed ring 10 is fixedly connected to the end of the telescopic rod 9 away from the connecting seat 8. A limiting ring 11 is rotatably connected inside the fixed ring 10. An adjusting rod 12 is fixedly connected inside the limiting ring 11. One end of the adjusting rod 12 has a threaded groove 13. A threaded rod 14 is helically connected inside the threaded groove 13.

[0023] A handle 15 is fixedly connected to the outer side of the fixing ring 10, and a grip 16 is fixedly connected to the end of the adjusting rod 12 away from the connecting seat 8. There are four limiting blocks 7, and two sets of two blocks are arranged in pairs. One set of limiting blocks 7 is symmetrically fixedly connected to the outer side of the detection head 5. The two limiting blocks 7 can limit the detection head 5 and prevent it from falling off. There are two springs 4, which are symmetrically arranged between the live detection device body 1 and the detection head 5. The springs 4 can connect the detection head 5 and the live detection device body 1 and can act as a buffer during detection. When the detection head 5 does not contact the ring main unit, the springs 4 can separate the detection head 5 from the contact point 3. The detection head 5 and the limiting hole 2 are a set of two. The outer dimensions of the detection head 5 and the inner dimensions of the limiting hole 2 are matched, which is more conducive to the movement of the detection head 5 in the limiting hole 2 and keeps the detection head 5 and the limiting hole 2 in a close fit.

[0024] Workflow: When using a live-line detection device for a ring main unit, first grasp the handle 15, then rotate the handle 16. The handle 16 drives the adjusting rod 12 and the limiting ring 11 to rotate inside the fixed ring 10. The adjusting rod 12 drives the threaded groove 13 to rotate together. As the threaded groove 13 rotates, the threaded rod 14 extends out from inside the adjusting rod 12. With the extension of the threaded rod 14, the threaded rod 14 drives the telescopic rod 9, the connecting seat 8, and the live-line detection device body 1 to move away. The telescopic rod 9 is also stretched during this process. The threaded rod 14 moves linearly under the guidance of the connecting seat 8, the telescopic rod 9, and the fixed ring 10. Through the above operation, the worker can perform live-line detection on the ring main unit from a distance. When the live-line detection device body 1 approaches the ring main unit, the detection head 5 will contact the ring main unit. The device makes contact, and then the live-line detection device body 1 is moved by the adjusting rod 12 and the threaded rod 14. As the live-line detection device body 1 moves, the detection head 5 retracts into the limiting hole 2. The detection head 5 drives the limiting block 7 to move in the limiting groove 6, which guides the detection head 5 and prevents it from falling off. After the detection head 5 enters the limiting hole 2, it compresses the spring 4. Finally, the detection head 5 makes contact with the contact point 3, thereby connecting the detection head 5 and the live-line detection device body 1. Then, the live-line detection device body 1 can be used to perform live-line detection on the ring main unit. The limiting hole 2 and the spring 4 can play a buffering role to avoid damage to the detection head 5 caused by hard impact. After the detection is completed, the handle 16 is rotated in the opposite direction to retract the threaded rod 14 into the adjusting rod 12, thereby reducing the overall length and facilitating subsequent storage and movement.

[0025] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0026] 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 live-line detection device for a ring main unit, comprising a live-line detection device body (1), characterized in that: One end of the live-line detection device body (1) is provided with symmetrically arranged limiting holes (2). A contact point (3) is provided inside the limiting hole (2). A spring (4) located outside the contact point (3) is fixedly connected inside the limiting hole (2). A detection head (5) located inside the limiting hole (2) is fixedly connected to the end of the spring (4) away from the contact point (3). Limiting grooves (6) located on both sides of the limiting hole (2) are provided inside the live-line detection device body (1). Limiting blocks (7) are slidably connected inside the limiting grooves (6). A connecting seat (8) is fixedly connected to one end away from the detection head (5). A telescopic rod (9) is fixedly connected to one end of the connecting seat (8) away from the live detection device body (1). A fixed ring (10) is fixedly connected to one end of the telescopic rod (9) away from the connecting seat (8). A limit ring (11) is rotatably connected inside the fixed ring (10). An adjusting rod (12) is fixedly connected inside the limit ring (11). A threaded groove (13) is opened at one end of the adjusting rod (12). A threaded rod (14) is spirally connected inside the threaded groove (13).

2. The live-line detection device for a ring main unit according to claim 1, characterized in that: A handle (15) is fixedly connected to the outer side of the fixing ring (10), and a grip (16) is fixedly connected to the end of the adjusting rod (12) away from the connecting seat (8).

3. The live-line detection device for a ring main unit according to claim 2, characterized in that: There are four limiting blocks (7), and two groups of two are formed. One group of limiting blocks (7) is symmetrically fixedly connected to the outside of the detection head (5).

4. The live-line detection device for a ring main unit according to claim 1, characterized in that: The number of springs (4) is two, and the springs (4) are symmetrically arranged between the live detection device body (1) and the detection head (5).

5. The live-line detection device for a ring main unit according to claim 1, characterized in that: The detection head (5) and the limiting hole (2) are a set, and there are two sets in total. The outer dimensions of the detection head (5) and the inner dimensions of the limiting hole (2) are matched.

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