Energy-taking iron core structure of cable fault on-line monitoring device

Abstract

The utility model relates to the technical field of power transmission cable maintenance, and discloses an energy-taking iron core structure of a cable fault on-line monitoring device, which comprises outer shells and an energy-taking iron core main body, the energy-taking iron core main body is positioned in an inner cavity of the outer shells, two ends of a semicircular cross section of one group of outer shells are respectively provided with a concave open slot, and the concave open slots are communicated with the inner cavity of the outer shells. The peripheries of the two sides of the two outer shells are each provided with an overlapped embedded clamping base structure. According to the energy-taking iron core, the periphery of the connected section of the energy-taking iron core main body is wrapped by the plastic shell by additionally arranging the concave open slot, so that the air tightness of the section of the energy-taking iron core is improved, the corrosion probability of the iron core is greatly reduced, long-time efficient operation of the energy-taking iron core is ensured, and the service life is prolonged; and an energy-taking iron core fixing structure is improved, and an overlapping type embedding structure is arranged, so that the cross sections of the iron cores on the two sides can be accurately aligned, the magnetic leakage phenomenon is reduced, the coupling output power of the energy-taking iron core is improved, meanwhile, the installation fixity of the energy-taking iron core is greatly improved, and continuous and stable work of the iron core is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of power transmission cable maintenance technology, specifically to an energy-harvesting iron core structure for an online cable fault monitoring device. Background Technology

[0002] Power transmission cables are the key carriers for urban power transmission. Currently, most of the fault monitoring devices installed on cables by power grid companies use a power supply method of coupled energy harvesting iron core + lithium battery to maintain the normal operation of the internal components of the equipment.

[0003] In existing technologies, for the purpose of easy installation, the core is usually cut in half into two symmetrical semi-circular ring structures. This method expands the critical value for core saturation to a certain extent. However, during installation, it is inevitable that the core cross-section will not be accurately aligned, resulting in a large amount of magnetic leakage and reducing the output power of the core. In addition, clamps are often used to bind the two halves of the core during installation. Over time, the core cross-section will inevitably loosen, leading to a decrease in the waterproof and moisture-proof performance of the core cross-section. This gradually induces corrosion of the core cross-section, resulting in a decrease in the performance of the core. Furthermore, in practical applications, it has been found that after the core cross-section is corroded, it will vibrate significantly and make abnormal noises when the load current is too high.

[0004] Therefore, it is essential to design a highly airtight and stable energy harvesting core structure to improve the operational stability of the energy harvesting transformer. Utility Model Content

[0005] To address the problem of significant magnetic leakage caused by inaccurate alignment of the core cross-section in existing technologies, and the fact that the core cross-section inevitably loosens over time due to the use of clamps to bind the two halves of the core during installation, leading to a decline in its waterproof and moisture-proof performance and eventually corrosion, resulting in a decrease in the performance of the energy harvesting core, and further, in practical applications, it has been found that corrosion of the core cross-section causes significant vibration and abnormal noise when the load current is too high, this utility model provides an energy harvesting core structure for an online cable fault monitoring device.

[0006] This utility model is achieved by the following technical solution: an energy-harvesting core structure for an online cable fault monitoring device, comprising an outer shell and an energy-harvesting core body. Both sets of the outer shell and the two sets of energy-harvesting core bodies are configured as symmetrical semi-circular ring structures. The energy-harvesting core body is located in the inner cavity of the outer shell. Both ends of the semi-circular ring section of one set of the outer shell are provided with concave opening grooves. The outer periphery of both sides of the semi-circular ring of the two sets of the outer shell are provided with overlapping interlocking bracket structures.

[0007] The overlapping interlocking bracket structure includes a first bracket, a second bracket, a limiting block, an interlocking protrusion, a limiting groove, an interlocking recess, a threaded hole, and a fastening bolt. The overlapping interlocking bracket structure is used to fasten two sets of outer shells by fitting together.

[0008] Preferably, one side of the first card holder and the second card holder are configured as a stepped shape that fits into each other. The two sets of first card holders are symmetrically installed on the outer periphery of both sides of a set of outer shells with concave opening grooves, and the two sets of second card holders are symmetrically installed on the outer periphery of both sides of another set of outer shells.

[0009] Preferably, the limiting block and the fitting protrusion are both installed on the stepped surface of the first card seat, and the limiting groove and the fitting recess are both formed on the stepped surface of the second card seat.

[0010] Preferably, the threaded hole extends through the interior of the fitting protrusion and the fitting groove, and the fastening bolt is threadedly connected to the threaded hole.

[0011] Preferably, the outer periphery of the energy harvesting core body is tightly wound with core wire turns, and the relative gap between the energy harvesting core body and the outer shell is filled with insulating potting compound.

[0012] Preferably, an explosion-proof connector is installed on the other side of a set of second card holders, and one end of the explosion-proof connector is connected to a power cord.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model provides a power-harvesting core structure for an online cable fault monitoring device. By adding an indented opening groove, the contact section of the power-harvesting core body is wrapped with a plastic shell, increasing the airtightness of the power-harvesting core section, greatly reducing the probability of core corrosion, ensuring long-term efficient operation of the power-harvesting core, and extending its service life. Furthermore, the improved power-harvesting core fixing structure adopts an overlapping interlocking structure, which allows for precise alignment of the two core sections, reducing magnetic leakage, increasing the coupling output power of the power-harvesting core, and greatly improving the installation and fixation of the power-harvesting core, thereby ensuring the continuous and stable operation of the core. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of the energy harvesting core when it is opened and closed according to this utility model;

[0016] Figure 2 This is a three-dimensional schematic diagram of the overlapping interlocking card holder structure of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the energy harvesting core of this utility model during actual installation.

[0018] In the diagram: 1. Outer shell; 2. Energy harvesting core body; 3. Overlapping interlocking bracket structure; 301. First bracket; 302. Second bracket; 303. Limiting block; 304. Interlocking protrusion; 305. Limiting groove; 306. Interlocking groove; 307. Threaded hole; 308. Fastening bolt; 4. Core wire coil; 5. Insulating potting compound; 6. Recessed opening groove; 7. Explosion-proof connector; 8. Power cord. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0020] Please see Figure 1 - Figure 3 The power extraction core structure of the cable fault online monitoring device in this embodiment includes an outer shell 1 and a power extraction core body 2. Both sets of outer shells 1 and two sets of power extraction core bodies 2 are set as symmetrical semi-circular ring structures. The power extraction core body 2 is located in the inner cavity of the outer shell 1. The outer periphery of the power extraction core body 2 is tightly wound with core wire turns 4. The relative gap between the power extraction core body 2 and the outer shell 1 is filled with insulating potting compound 5.

[0021] Specifically, the outer shell 1 is made of plastic. To ensure the overall moisture-proof and moisture-resistant capabilities of the energy harvesting core body 2, the energy harvesting core body 2 is embedded inside the outer shell 1, and its gaps are filled with insulating potting compound 5 to prevent the energy harvesting core body 2 from loosening and to ensure its own sealing.

[0022] Furthermore, both ends of the semi-circular cross-section of one set of outer shell 1 are provided with concave opening grooves 6. The outer periphery of the two sets of outer shell 1 near the cross-section on both sides of the semi-circular cross-section is provided with overlapping interlocking bracket structures 3. The overlapping interlocking bracket structure 3 includes a first bracket 301, a second bracket 302, a limiting block 303, an interlocking protrusion 304, a limiting groove 305, an interlocking groove 306, a threaded hole 307 and a fastening bolt 308. The overlapping interlocking bracket structure 3 is used to fasten the two sets of outer shell 1 by fitting together. One side of the first bracket 301 and the second bracket 302 is set as a stepped shape that interlocks with each other. The two sets of first brackets 301 are symmetrically installed on the outer periphery of both sides of the set of outer shell 1 with concave opening grooves 6.

[0023] Specifically, one set of outer shell 1 has a concave opening groove 6 on its semi-circular cross-section, which allows the semi-circular cross-section of the other set of outer shell 1 to be embedded in the concave opening groove 6. This allows the cross-sections of the two sets of energy harvesting iron core bodies 2 to be tightly connected, so that the connecting cross-section of the energy harvesting iron core bodies 2 is wrapped by a plastic shell, increasing the airtightness of the energy harvesting iron core cross-section. In actual installation, waterproof sealant can also be applied to the inner surface of the concave opening groove 6 to further increase airtightness, greatly reducing the probability of corrosion of the energy harvesting iron core cross-section.

[0024] Furthermore, two sets of second card seats 302 are symmetrically installed on the outer periphery of the other set of outer shells 1. The limiting block 303 and the fitting protrusion 304 are both installed on the stepped surface of the first card seat 301. The limiting groove 305 and the fitting groove 306 are both opened on the stepped surface of the second card seat 302. The threaded hole 307 is opened through the interior of the fitting protrusion 304 and the fitting groove 306. The fastening bolt 308 is threadedly connected to the threaded hole 307. An explosion-proof connector 7 is installed on the other side of one set of second card seats 302. One end of the explosion-proof connector 7 is connected to a power cord 8.

[0025] Specifically, overlapping interlocking bracket structures 3 are provided on the two sets of outer shells 1 near the semi-circular annular cross-section. Among them, the second bracket 302 is equipped with an explosion-proof connector 7 and a power cord 8. In actual installation, the first bracket 301 and the second bracket 302 in the overlapping interlocking bracket structure 3 are interlocked with each other, the limiting block 303 and the limiting groove 305 are aligned and embedded with each other, the interlocking protrusion 304 and the interlocking groove 306 are aligned and embedded with each other, and the corresponding threaded holes 307 are aligned with each other. The cross-sections of the two sets of energy harvesting iron core bodies 2 can be tightly connected. Finally, the fixing bolt 308 is fastened to the threaded hole 307 by thread. Quick installation and disassembly can be achieved by fastening the bolt 308.

[0026] Working principle: The outer shell 1 is made of plastic. To ensure the overall moisture-proof and moisture-resistant capabilities of the energy harvesting core body 2, the energy harvesting core body 2 is embedded inside the outer shell 1. The gaps are filled with insulating potting compound 5 to prevent the energy harvesting core body 2 from loosening and to ensure its own sealing. One set of outer shell 1 has a concave opening groove 6 on its semi-circular cross-section, which allows the semi-circular cross-section of the other set of outer shell 1 to be embedded in the concave opening groove 6. This allows the cross-sections of the two sets of energy harvesting core bodies 2 to be tightly connected, so that the connecting cross-section of the energy harvesting core body 2 is wrapped by the plastic shell, increasing the airtightness of the energy harvesting core cross-section. In actual installation, waterproof sealant can also be applied to the inner surface of the concave opening groove 6 to further increase airtightness and greatly reduce the probability of corrosion of the energy harvesting core cross-section.

[0027] Two sets of outer shells 1 are provided with overlapping interlocking bracket structures 3 near the semi-circular annular cross-section. In actual installation, the first bracket 301 and the second bracket 302 in the overlapping interlocking bracket structure 3 are interlocked with each other, the limiting block 303 and the limiting groove 305 are aligned and embedded with each other, the interlocking protrusion 304 and the interlocking groove 306 are aligned and embedded with each other, and the corresponding threaded holes 307 are aligned with each other. The cross-sections of the two sets of energy harvesting iron core bodies 2 can be tightly connected. Finally, the fixing bolt 308 is fastened to the threaded hole 307 by the thread. Quick installation and disassembly can be achieved by fastening the bolt 308.

[0028] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A power-harvesting core structure for an online cable fault monitoring device, comprising an outer shell (1) and a power-harvesting core body (2), wherein both sets of the outer shell (1) and both sets of the power-harvesting core bodies (2) are configured as symmetrical semi-circular ring structures, characterized in that, The energy-harvesting core body (2) is located in the inner cavity of the outer shell (1). Both ends of the semi-circular cross section of one set of the outer shell (1) are provided with concave opening grooves (6). The outer periphery of the two sets of the outer shell (1) near the cross section on both sides of the semi-circular ring is provided with overlapping interlocking card seat structures (3). The overlapping interlocking bracket structure (3) includes a first bracket (301), a second bracket (302), a limiting block (303), an interlocking protrusion (304), a limiting groove (305), an interlocking groove (306), a threaded hole (307), and a fastening bolt (308). The overlapping interlocking bracket structure (3) is used to fasten two sets of outer shells (1) by fitting together.

2. The energy-harvesting core structure of the online cable fault monitoring device according to claim 1, characterized in that, The first card holder (301) and the second card holder (302) are configured in a stepped shape that fits into each other. The two sets of the first card holders (301) are symmetrically installed on the outer periphery of the two sides of a set of outer shells (1) with concave opening grooves (6). The two sets of the second card holders (302) are symmetrically installed on the outer periphery of the two sides of another set of outer shells (1).

3. The energy-harvesting core structure of the online cable fault monitoring device according to claim 1, characterized in that, The limiting block (303) and the fitting protrusion (304) are both installed on the stepped surface of the first card seat (301), and the limiting groove (305) and the fitting recess (306) are both opened on the stepped surface of the second card seat (302).

4. The energy-harvesting core structure of the online cable fault monitoring device according to claim 1, characterized in that, The threaded hole (307) is opened through the interior of the fitting protrusion (304) and the fitting groove (306), and the fastening bolt (308) is threadedly connected to the threaded hole (307).

5. The energy-harvesting core structure of the online cable fault monitoring device according to claim 1, characterized in that, The outer periphery of the energy harvesting core body (2) is tightly wound with core wire turns (4), and the relative gap between the energy harvesting core body (2) and the outer shell (1) is filled with insulating potting compound (5).

6. The energy-harvesting core structure of the online cable fault monitoring device according to claim 1, characterized in that, An explosion-proof connector (7) is installed on the other side of a set of second card holders (302), and one end of the explosion-proof connector (7) is connected to a power cord (8).

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