Lightning protection device for power distribution network line

Abstract

The utility model discloses a power distribution network line lightning protection device, which relates to the technical field of lightning protection devices and comprises a butt joint base, the upper surface of the butt joint base is fixedly connected with a bearing fixing assembly, the top end of the bearing fixing assembly is provided with a butt joint sleeve assembly, and the inner wall of the butt joint sleeve assembly is provided with a lightning arresting rod. The bearing fixing assembly comprises a bearing column fixedly connected to the center of the upper surface of the butt joint base. According to the utility model, through a triple fixing mechanism of threaded connection and fixation (threaded fit of the butt joint sleeve and the bearing column), positioning of the limiting sleeve (circumferential limiting of the annular groove and the limiting sleeve), and structural embedding and reinforcement (three-dimensional embedding of the built-in lantern ring, the triangular support frame and the L-shaped bearing rod), all-directional constraint in axial, circumferential and spatial dimensions is formed. And in cooperation with the reinforcing inclined rods on the inner walls of the triangular supporting frames, the anti-vibration performance of the lightning arresting rod under the complex working conditions of strong wind, lightning impulse and the like is remarkably improved, and the problem that a traditional single-point fixing structure is prone to loosening is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lightning protection device technical field, concretely relates to a distribution network line lightning protection device. BACKGROUND

[0002] As the "last mile" of the power system to deliver electric energy to users, the distribution network has a wide distribution of lines and complex erection environment, and is easily affected by lightning overvoltage to cause equipment damage, power failure and other problems. Although the existing distribution network line lightning protection device has basic lightning connection and discharge functions, it still has the following technical bottlenecks in actual application:

[0003] For example, the Chinese patent application No. 202021908856. A distribution network line lightning protection device, the basic description is: the distribution network line lightning protection device in use generally adopts the lightning rod to transmit the electric shock received by the down lead to the grounding diffusion disc, so that the current is absorbed by the earth, reducing its influence on the distribution cabinet body and its internal equipment, thereby achieving the effect of lightning protection, effectively avoiding the damage of internal facilities caused by lightning striking the distribution box body, leading to the situation that the power failure in the region affects people's life; The existing distribution network line lightning protection device generally uses a lightning rod to transmit the electric shock received by the down lead to the grounding diffusion disc to make the current be absorbed by the earth, but after use, the lightning will cause great damage to the lightning rod, so that the lightning rod cannot be used continuously and needs to be replaced. When replacing the lightning rod, it is very time-consuming and laborious to operate, which is not conducive to more quickly replacing the lightning rod, reduces the replacement effect of the lightning rod, and is not conducive to better use. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a distribution network line lightning protection device to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A distribution network line lightning protection device, comprising a docking base, the upper surface of the docking base is fixedly connected with a receiving and fixing assembly, the top end of the receiving and fixing assembly is provided with a docking sleeve assembly, and the inner wall of the docking sleeve assembly is provided with a lightning rod;

[0007] The receiving and fixing assembly comprises a receiving column fixedly connected to the center of the upper surface of the docking base, a threaded groove is formed in the outer wall of the receiving column near the top end, an L-shaped receiving rod is fixedly connected to the outer wall of the receiving column, and one end of the L-shaped receiving rod is fixedly connected with a triangular support frame;

[0008] The butt joint sleeve assembly comprises a butt joint sleeve movably sleeved on the outer wall of the lightning rod near the bottom end, the inner wall of the butt joint sleeve is threadedly connected with the receiving column through a threaded groove, and the outer wall of the butt joint sleeve is fixedly sleeved with an embedded sleeve ring.

[0009] The utility model discloses further improve in the technical scheme that the outer wall of L type receiving pole near the top is inserted in the inner wall of embedded sleeve ring.

[0010] The utility model discloses further improve in the technical scheme that the outer wall of lightning rod near the bottom is provided with ring groove, and the inner wall of butt joint sleeve near the top is fixedly connected with the limiting sleeve that is matched with ring groove.

[0011] The utility model discloses further improve in the technical scheme that the limiting sleeve is movably sleeved in the inner wall of ring groove.

[0012] The utility model discloses further improve in the technical scheme that the bottom of lightning rod and the top of receiving column overlap.

[0013] The utility model discloses further improve in the technical scheme that the inner wall of triangular support frame is fixedly connected with the reinforcing inclined pole.

[0014] The utility model discloses further improve in the technical scheme that the upper surface of butt joint base is provided with mounting hole, and the outer wall of lightning rod is fixedly connected with ground wire.

[0015] Due to the adoption of the above technical scheme, the utility model discloses relative to the prior art, and the technical progress is:

[0016] The utility model provides a kind of distribution network line lightning protection device, is fixed by thread connection (the thread cooperation of butt joint sleeve and receiving column), limiting sleeve positioning (the circumferential limit of ring groove and limiting sleeve), structure inlay reinforcement (the three-dimensional inlay of embedded sleeve ring and triangular support frame, L type receiving pole), three fixed mechanisms, form the overall constraint of axial, circumferential and space dimension. With the reinforcing inclined pole of the inner wall of triangular support frame, the anti-vibration performance of lightning rod under complex working conditions such as strong wind, lightning impact is significantly improved, avoid the problem that traditional single-point fixed structure is easy to loosen, guarantee long-term operation reliability.

[0017] The utility model provides a kind of distribution network line lightning protection device, and lightning rod is received as lightning, is connected ground device by bottom and receiving column overlap, outer wall ground wire direct connection, form low impedance conductive path, ensure that lightning current is rapidly discharged to ground. Meanwhile, the rigid support structure of receiving column, L type receiving pole and triangular support frame, effectively suppress the deformation or displacement of lightning rod under lightning impact force, cooperate with the anti-deflection design of ring groove-limiting sleeve, avoid the interruption of conduction path caused by mechanical vibration, realize the efficient, sustained release of lightning energy, improve the lightning safety of distribution network line.

[0018] This utility model provides a lightning protection device for power distribution lines, which adopts a modular combination of threaded connection and structural fitting. During maintenance, only the connecting sleeve needs to be rotated in the opposite direction to simultaneously release the threaded connection and the fitting structure, allowing for quick disassembly of the lightning rod without removing the basic fixing components (connecting base and mounting hole structure). This design significantly reduces the difficulty and time cost of maintenance operations, and is especially suitable for the maintenance of power distribution equipment in high-altitude or complex environments. It meets the actual needs of power systems for lightning protection devices that are "easy to maintain and require less downtime," thereby improving operation and maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the separation structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the receiving and fixing component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the separation structure of the docking sleeve assembly of this utility model.

[0023] In the diagram: 1. Docking base; 2. Lightning rod; 3. Grounding wire; 4. Docking sleeve assembly; 5. Support and fixing assembly; 6. Support column; 7. Threaded groove; 8. Triangular support frame; 9. L-shaped support rod; 10. Ring groove; 11. Docking sleeve; 12. Limiting sleeve; 13. Internal collar; 14. Mounting hole. Detailed Implementation

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The present invention will be further described in detail below with reference to embodiments:

[0026] Example 1, such as Figures 1-4 As shown, this utility model provides a lightning protection device for power distribution lines, including a docking base 1. A receiving and fixing component 5 is fixedly connected to the upper surface of the docking base 1. A docking sleeve component 4 is provided at the top of the receiving and fixing component 5. A lightning rod 2 is provided on the inner wall of the docking sleeve component 4.

[0027] The receiving fixed component 5 includes a receiving column 6 fixedly connected to the center of the upper surface of the docking base 1, a threaded groove 7 is formed in the outer wall of the receiving column 6 close to the top end, an L-shaped receiving rod 9 is fixedly connected to the outer wall of the receiving column 6, and a triangular supporting frame 8 is fixedly connected to one end of the L-shaped receiving rod 9.

[0028] The docking sleeve component 4 includes a docking sleeve 11 movably sleeved on the outer wall of the lightning rod 2 close to the bottom end, the inner wall of the docking sleeve 11 is threadedly connected with the receiving column 6 through the threaded groove 7, and the outer wall of the docking sleeve 11 is fixedly sleeved with an embedded sleeve ring 13.

[0029] The outer wall of the L-shaped receiving rod 9 close to the top end is inserted into the inner wall of the embedded sleeve ring 13.

[0030] The outer wall of the lightning rod 2 close to the bottom end is provided with a ring groove 10, and the inner wall of the docking sleeve 11 close to the top end is fixedly connected with a limiting sleeve 12 matched with the ring groove 10.

[0031] In the embodiment 2 as shown, Figures 1-4 On the basis of the embodiment 1, the utility model provides a technical scheme: preferably, the limiting sleeve 12 is movably sleeved on the inner wall of the ring groove 10.

[0032] The bottom end of the lightning rod 2 is overlapped with the top end of the receiving column 6.

[0033] The inner wall of the triangular supporting frame 8 is fixedly connected with a reinforcing inclined rod.

[0034] The upper surface of the docking base 1 is provided with a mounting hole 14, and the outer wall of the lightning rod 2 is fixedly connected with a grounding wire 3.

[0035] The working principle of the power distribution network line lightning protection device will be described below.

[0036] As shown in the embodiment 2, Figures 1-4 The power distribution network line lightning protection device provided by the utility model realizes the lightning protection function through the cooperation of the lightning rod 2, the receiving fixed component 5 and the docking sleeve component 4, and the specific working principle is as follows:

[0037] I. Overall structure fixing principle

[0038] Basic installation: through the mounting hole 14 formed in the upper surface of the docking base 1, the device is fixed on the tower or equipment foundation of the power distribution network line to form a stable installation base point.

[0039] The lightning rod 2 is fixed at the top end of the receiving column 6. After preliminary positioning, the rotating connecting sleeve 11 is engaged with the threaded groove 7 on the outer wall of the receiving column 6. As the connecting sleeve 11 moves downward along the receiving column 6, the fixed inner ring 13 on the outer wall gradually inserts into the gap between the triangular support frame 8 and the L-shaped receiving rod 9 on the outer wall of the receiving column 6.

[0040] Triple fixation:

[0041] Threaded connection fixation: the threaded connection between the connecting sleeve 11 and the receiving column 6 provides the first axial fixation force;

[0042] Limiting sleeve positioning: the movable sleeve 12 of the limiting sleeve 12 in the ring groove 10 at the bottom end of the lightning rod 2 is connected with the inner wall of the connecting sleeve 11, forming the second circumferential rotation limiting fixation;

[0043] Structural embedding reinforcement: the L-shaped receiving rod 9 is inserted into the gap between the inner ring 13 and the receiving column 6, and the inner ring 13 is embedded in the horizontal support structure of the triangular support frame 8 and the L-shaped receiving rod 9. The inner wall of the triangular support frame 8 provides rigid support for the inclined rod, forming the third three-dimensional embedded fixation, ensuring that the connection between the lightning rod 2 and the receiving column 6 has stable performance against wind vibration and impact.

[0044] II. Lightning conduction and release principle

[0045] Lightning reception function: when lightning strikes the power distribution network, the lightning rod 2 as the lightning receiving end preferentially guides the lightning overvoltage to its top end, and conducts the lightning current into the device through its own conductive structure.

[0046] Path conduction: the lightning current is transmitted to the grounding device (not shown in the figure) through the grounding wire 3 fixed on the outer wall of the lightning rod 2, and finally discharged to the ground.

[0047] Structural coordination protection:

[0048] The rigid support structure composed of the receiving column 6, the L-shaped receiving rod 9 and the triangular support frame 8 ensures that the lightning rod 2 remains stable under strong lightning impact, avoiding connection failure caused by mechanical vibration;

[0049] The connecting sleeve 11 and the ring groove 10 of the lightning rod 2 cooperate with the limiting sleeve 12 to prevent the lightning rod 2 from being deflected circumferentially under the action of lightning impact force, ensuring the continuity and reliability of the lightning conduction path.

[0050] III. Detachable maintenance principle

[0051] When the device needs to be overhauled or replaced, the reverse rotation of the butt sleeve 11 makes it disengage from the threaded groove 7 of the receiving column 6, and the built-in ring 13 synchronously disengages from the fitting structure of the triangular support frame 8 and the L-shaped receiving rod 9, so that the lightning rod 2 can be quickly disassembled without damaging the foundation fixed structure, significantly improving the maintenance efficiency.

[0052] The utility model has been described in detail above, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, without departing from the spirit of the utility model, the modifications or improvements are within the scope of protection of the utility model.

Claims

1. A lightning protection device for a power distribution network line, comprising a counter base (1), characterized in that: The upper surface of the docking base (1) is fixedly connected with a bearing fixing assembly (5), the top end of the bearing fixing assembly (5) is provided with a docking sleeve assembly (4), and the inner wall of the docking sleeve assembly (4) is provided with a lightning rod (2); The bearing fixing assembly (5) comprises a bearing column (6) fixedly connected to the center of the upper surface of the docking base (1), a threaded groove (7) is formed in the outer wall of the bearing column (6) close to the top end, an L-shaped bearing rod (9) is fixedly connected to the outer wall of the bearing column (6), and one end of the L-shaped bearing rod (9) is fixedly connected with a triangular support frame (8); The docking sleeve assembly (4) comprises a docking sleeve (11) movably sleeved on the outer wall of the lightning rod (2) close to the bottom end, the inner wall of the docking sleeve (11) is threadedly connected with the bearing column (6) through the threaded groove (7), and the outer wall of the docking sleeve (11) is fixedly sleeved with an embedded sleeve ring (13).

2. The lightning protection device for distribution network lines according to claim 1, characterized in that: The outer wall of the L-shaped bearing rod (9) close to the top end is inserted into the inner wall of the embedded sleeve ring (13).

3. The lightning protection device for distribution network lines according to claim 1, characterized in that: The outer wall of the lightning rod (2) close to the bottom end is provided with a ring groove (10), and the inner wall of the docking sleeve (11) close to the top end is fixedly connected with a limiting sleeve (12) matched with the ring groove (10).

4. The lightning protection device for distribution network lines according to claim 3, characterized in that: The limiting sleeve (12) is movably sleeved on the inner wall of the ring groove (10).

5. The lightning protection device for distribution network lines according to claim 1, characterized in that: The bottom end of the lightning rod (2) is overlapped with the top end of the bearing column (6).

6. The lightning protection device for distribution network lines according to claim 1, characterized in that: The inner wall of the triangular support frame (8) is fixedly connected with a reinforcing inclined rod.

7. The lightning protection device for distribution network lines according to claim 1, characterized in that: The upper surface of the docking base (1) is provided with a mounting hole (14), and the outer wall of the lightning rod (2) is fixedly connected with a grounding wire (3).

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