A line fault early warning device for a power distribution network
Patent Information
- Application Number
- CN202522186543.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-10-16
AI Technical Summary
The probes of existing line fault early warning devices age in complex electromagnetic environments, cannot be replaced, and cannot adapt to different specifications of wires, which affects the monitoring function and limits the application scenarios.
A replaceable probe structure was designed. The probe can be replaced by the cooperation of a fixed ring, motor, bevel gear, bevel gear ring, rotating ring, rotating plate and limiting plate. At the same time, the clamping of wires of different specifications can be achieved by the cooperation of knob, threaded rod, moving block, slide, connecting frame, rotating shaft, roller, movable groove and rotating wheel.
It enables convenient replacement of probes, reduces maintenance costs, expands the applicability of the device, adapts to different specifications of wires, and reduces procurement and maintenance costs.
Smart Images
Figure CN224934099U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of early warning device technology, specifically to a line fault early warning device for power distribution networks. Background Technology
[0002] By employing technologies such as traveling wave ranging, when short-circuit faults or grounding faults occur in the distribution network, the fault location can be quickly and accurately determined with a small positioning error, greatly shortening the fault investigation time and allowing repair personnel to directly reach the fault point, reducing the blindness and workload of manual investigation. Generally, the current and voltage values in the line are accurately measured by current transformers. Under normal operation, the current and voltage are within a certain range, but at the moment of or in the early stage of a fault, these values will show abnormal fluctuations.
[0003] The existing technology has the following problems: Existing devices cannot replace the probes during use. The probes are constantly exposed to the complex electromagnetic environment of the power distribution network and the outdoor natural environment, causing their internal electronic components to gradually age and their performance to deteriorate. If the probes cannot be replaced, any aging or damage will severely impact the monitoring function of the entire early warning device, making it impossible to accurately obtain the operating parameters of the power distribution network and thus affecting the accuracy of fault warnings. Furthermore, existing devices cannot clamp wires of different specifications. Power distribution networks contain a wide variety of wire specifications, ranging from thin control cables to thick main transmission cables, with significant differences in diameter and material. If the early warning device cannot clamp wires of different specifications, it can only be used on lines with wires of specific specifications, limiting its application scenarios. Utility Model Content
[0004] The main purpose of this invention is to provide a line fault early warning device for power distribution networks, which can effectively solve the problem.
[0005] To achieve the above objectives, the technical solution adopted in this utility model is as follows: A line fault early warning device for a power distribution network includes a main body, with fixed frames fixedly connected to both the front and rear sides of the main body, a snap-fit seat fixedly connected to the right side of the main body, a probe disposed on the right side of the main body, wires disposed inside the main body, and two slots formed on the outer wall of the probe.
[0006] Preferably, the locking seat includes a retaining ring, the inner surface of which is fixedly connected to a motor, and the output shaft of the motor is fixedly connected to a bevel gear.
[0007] Preferably, the outer wall of the bevel gear is meshed with a bevel gear ring, a rotating ring is fixedly connected to the left side of the bevel gear ring, the outer wall of the rotating ring is rotatably connected to the fixed ring, two rotating plates are rotatably connected to the inner surface of the rotating ring, and an insert block is rotatably connected to the other end of the rotating plate, the outer wall of the insert block is slidably connected to the fixed ring.
[0008] Preferably, the inner surface of the fixing ring is fixedly connected to two limiting plates, the outer wall of the limiting plates is slidably connected to the insert block, and the outer wall of the insert block is movably connected to the slot.
[0009] Preferably, a knob is rotatably connected to the right side of the fixed frame, and a threaded rod is fixedly connected to the left side of the knob, with the outer wall of the threaded rod rotatably connected to the fixed frame.
[0010] Preferably, a sliding groove is provided on the front side of the fixed frame, a movable block is threadedly connected to the outer wall of the threaded rod, the outer wall of the movable block is slidably connected to the sliding groove, a connecting frame is fixedly connected to the front side of the movable block, a rotating shaft is rotatably connected to the upper side of the connecting frame, a roller is fixedly connected to the outer wall of the rotating shaft, and the outer wall of the wire is movably connected to the roller.
[0011] Preferably, the inner surface of the slide groove is provided with movable grooves on both the upper and lower sides, the upper and lower sides of the movable block are rotatably connected with wheels, the front side of the wheels is fixedly connected with a rotating rod, the outer wall of the rotating rod is rotatably connected to the movable block, and the outer wall of the wheels is movably connected to the movable grooves.
[0012] Compared with the prior art, this utility model has the following advantages: This utility model provides a line fault early warning device for power distribution networks. Through the cooperation of a fixed ring, a motor, a bevel gear, a bevel gear ring, a rotating ring, a rotating plate, a limiting plate, and a plug, the probe can be replaced. Only the faulty probe needs to be replaced, which greatly reduces maintenance costs and improves the maintenance efficiency of the device. This utility model provides a line fault early warning device for power distribution networks. Through the cooperation of knobs, threaded rods, moving blocks, slides, connecting frames, rotating shafts, rollers, movable slots, rotating rods and rotating wheels, it can clamp wires of different specifications. It can clamp wires of different specifications, so that the early warning device can be widely used in power distribution networks in different areas such as cities and rural areas. It eliminates the need to frequently change the device type due to differences in wire specifications, thereby reducing procurement and maintenance costs. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural diagram of this utility model; Figure 3 This is a schematic diagram of the card slot structure for this utility model; Figure 4 This is a schematic diagram of the clamping structure of this utility model; Figure 5 This is a schematic diagram of the important structure of this utility model; In the diagram: 1. Main body; 2. Fixed frame; 3. Snap-fit seat; 4. Probe; 5. Slot; 6. Knob; 7. Threaded rod; 8. Moving block; 9. Slide groove; 10. Connecting frame; 11. Rotating shaft; 12. Roller; 13. Movable groove; 14. Rotating rod; 15. Rotating wheel; 16. Wire; 31. Fixed ring; 32. Motor; 33. Bevel gear; 34. Bevel gear ring; 35. Rotating ring; 36. Rotating plate; 37. Limiting plate; 38. Insertion block. Detailed Implementation
[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following describes this utility model in conjunction with specific implementation methods.
[0015] like Figure 1 As shown, this utility model provides a line fault early warning device for power distribution networks, including a main body 1. Fixed frames 2 are fixedly connected to both the front and rear sides of the main body 1. A snap-fit seat 3 is fixedly connected to the right side of the main body 1. A probe 4 is disposed on the right side of the main body 1. An electrical wire 16 is disposed inside the main body 1. Two slots 5 are opened on the outer wall of the probe 4. The main body 1 serves as the core carrier of the entire device. The fixed frames 2 fixedly connected to its front and rear sides are used for the subsequent installation of the clamping structure for the electrical wire 16. The snap-fit seat 3 fixedly connected to the right side is responsible for connecting to the probe 4. The probe 4 is used to acquire relevant parameters of the power distribution network. The electrical wire 16 is disposed inside the main body 1. The two slots 5 opened on the outer wall of the probe 4 are used to cooperate with corresponding components on the snap-fit seat 3 to achieve the connection and fixation of the probe 4.
[0016] like Figure 2-3 As shown, this utility model provides a technical solution: Preferably, the snap-fit seat 3 includes a fixing ring 31, a motor 32 is fixedly connected to the inner surface of the fixing ring 31, a bevel gear 33 is fixedly connected to the output shaft of the motor 32, a bevel gear ring 34 is meshed with the outer wall of the bevel gear 33, a rotating ring 35 is fixedly connected to the left side of the bevel gear ring 34, the outer wall of the rotating ring 35 is rotatably connected to the fixing ring 31, two rotating plates 36 are rotatably connected to the inner surface of the rotating ring 35, an insert block 38 is rotatably connected to the other end of the rotating plate 36, the outer wall of the insert block 38 is slidably connected to the fixing ring 31, and two limiting plates 37 are fixedly connected to the inner surface of the fixing ring 31, the outer wall of the limiting plate 37... The probe 38 is slidably connected to the insert block 38, and the outer wall of the insert block 38 is movably connected to the slot 5. When the probe 4 needs to be replaced, the motor 32, which is fixedly connected to the inner surface of the fixing ring 31, is started. The output shaft of the motor 32 drives the bevel gear 33 to rotate. The bevel gear 33 meshes with the bevel gear ring 34, causing the bevel gear ring 34 to rotate, thereby driving the rotating ring 35 fixedly connected on the left to rotate. When the rotating ring 35 rotates, the two rotating plates 36 rotatably connected inside it will drive the insert block 38 to slide along the fixing ring 31. The limiting plate 37 plays the role of limiting the sliding direction of the insert block 38. The probe 4 can be removed when the insert block 38 slides out of the slot 5, and the probe 4 can be installed when it slides out of the slot 5, thus realizing the replaceable function of the probe 4.
[0017] like Figure 4-5 As shown, this utility model provides a technical solution: Preferably, a knob 6 is rotatably connected to the right side of the fixed frame 2, and a threaded rod 7 is fixedly connected to the left side of the knob 6. The outer wall of the threaded rod 7 is rotatably connected to the fixed frame 2. A sliding groove 9 is provided on the front side of the fixed frame 2. A movable block 8 is threadedly connected to the outer wall of the threaded rod 7. The outer wall of the movable block 8 is slidably connected to the sliding groove 9. A connecting frame 10 is fixedly connected to the front side of the movable block 8. A rotating shaft 11 is rotatably connected to the upper side of the connecting frame 10. A roller 12 is fixedly connected to the outer wall of the rotating shaft 11. The outer wall of the wire 16 is movably connected to the roller 12. Movable grooves 13 are provided on both the upper and lower sides of the inner surface of the sliding groove 9. Rotary wheels 15 are rotatably connected to both the upper and lower sides of the movable block 8. A rotating rod 14 is fixedly connected to the front side of the rotating wheel 15. The outer wall of the rotating rod 14 is slidably connected to the sliding groove 9. Block 8 is rotatably connected, and the outer wall of the rotating wheel 15 is movably connected to the movable groove 13. When it is necessary to clamp wires 16 of different specifications, the knob 6 connected to the right side of the fixed frame 2 is rotated. The knob 6 drives the threaded rod 7 fixedly connected to the left side to rotate. The rotation of the threaded rod 7 causes the movable block 8 connected to it to slide in the slide groove 9. The connecting frame 10 fixedly connected to the front side of the movable block 8 moves accordingly. The rotating shaft 11 on the upper side of the connecting frame 10 and the roller 12 fixed on its outer wall contact the wire 16. The position of the roller 12 is changed by the movement of the movable block 8 to adapt to wires 16 of different diameters. At the same time, the rotating wheels 15 connected to the upper and lower sides of the movable block 8 slide in the movable groove 13. The rotating rod 14 connects the rotating wheel 15 and the movable block 8, making the movement of the movable block 8 more stable and realizing the clamping of wires 16 of different specifications.
[0018] The working principle of this line fault early warning device used in power distribution networks will be explained in detail below.
[0019] like Figure 1-5As shown, when probe 4 needs to be replaced, the motor 32 fixedly connected to the inner surface of the fixing ring 31 is started. The output shaft of the motor 32 drives the bevel gear 33 to rotate. The bevel gear 33 meshes with the bevel ring 34, causing the bevel ring 34 to rotate, thereby driving the rotating ring 35 fixedly connected on the left to rotate. When the rotating ring 35 rotates, the two rotating plates 36 rotatably connected inside it will drive the insertion block 38 to slide along the fixing ring 31. The limiting plate 37 restricts the sliding direction of the insertion block 38. The insertion block 38 can be removed by sliding out of the slot 5, and the probe 4 can be installed by sliding it in the opposite direction. This realizes the replaceable function of probe 4. When it is necessary to clamp wires 16 of different specifications, the fixing frame is rotated. 2. The knob 6 connected to the right side rotates, which drives the threaded rod 7 fixedly connected to the left side to rotate. The rotation of the threaded rod 7 causes the movable block 8 connected to it to slide in the slide groove 9. The connecting frame 10 fixedly connected to the front of the movable block 8 moves accordingly. The upper rotating shaft 11 and the roller 12 fixed to its outer wall of the connecting frame 10 contact the wire 16. The position of the roller 12 is changed by the movement of the movable block 8 to adapt to wires 16 of different diameters. At the same time, the rotating wheels 15 connected to the upper and lower sides of the movable block 8 slide in the movable groove 13. The rotating rod 14 connects the rotating wheels 15 and the movable block 8, making the movement of the movable block 8 more stable and realizing the clamping of wires 16 of different specifications.
[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A line fault early warning device for a power distribution network, characterized in that: Includes a main body (1), with fixed frames (2) fixedly connected to both the front and rear sides of the main body (1), a card holder (3) fixedly connected to the right side of the main body (1), a probe (4) provided on the right side of the main body (1), an electric wire (16) provided inside the main body (1), and two slots (5) opened on the outer wall of the probe (4).
2. The line fault early warning device for a power distribution network according to claim 1, characterized in that: The card holder (3) includes a retaining ring (31), and a motor (32) is fixedly connected to the inner surface of the retaining ring (31). A bevel gear (33) is fixedly connected to the output shaft of the motor (32).
3. A line fault early warning device for a power distribution network according to claim 2, characterized in that: The outer wall of the bevel gear (33) is meshed with a bevel ring (34). A rotating ring (35) is fixedly connected to the left side of the bevel ring (34). The outer wall of the rotating ring (35) is rotatably connected to the fixed ring (31). Two rotating plates (36) are rotatably connected to the inner surface of the rotating ring (35). A plug (38) is rotatably connected to the other end of the rotating plate (36). The outer wall of the plug (38) is slidably connected to the fixed ring (31).
4. A line fault early warning device for a power distribution network according to claim 3, characterized in that: The inner surface of the fixed ring (31) is fixedly connected to two limiting plates (37), the outer wall of the limiting plate (37) is slidably connected to the insert (38), and the outer wall of the insert (38) is movably connected to the slot (5).
5. A line fault early warning device for a power distribution network according to claim 1, characterized in that: A knob (6) is rotatably connected to the right side of the fixed frame (2), and a threaded rod (7) is fixedly connected to the left side of the knob (6). The outer wall of the threaded rod (7) is rotatably connected to the fixed frame (2).
6. A line fault early warning device for a power distribution network according to claim 5, characterized in that: The front side of the fixed frame (2) is provided with a sliding groove (9), the outer wall of the threaded rod (7) is threaded with a moving block (8), the outer wall of the moving block (8) is slidably connected to the sliding groove (9), the front side of the moving block (8) is fixedly connected with a connecting frame (10), the upper side of the connecting frame (10) is rotatably connected with a rotating shaft (11), the outer wall of the rotating shaft (11) is fixedly connected with a roller (12), and the outer wall of the wire (16) is movably connected to the roller (12).
7. A line fault early warning device for a power distribution network according to claim 6, characterized in that: The inner surface of the slide (9) is provided with movable grooves (13) on both the upper and lower sides. The upper and lower sides of the movable block (8) are rotatably connected with rotating wheels (15). The front side of the rotating wheel (15) is fixedly connected with a rotating rod (14). The outer wall of the rotating rod (14) is rotatably connected to the movable block (8). The outer wall of the rotating wheel (15) is movably connected to the movable groove (13).