A steel pipe pole line surge arrester installation structure

Abstract

This utility model discloses an installation structure for a surge arrester on a steel pipe pole, relating to the field of power system technology. The utility model includes a channel steel support, with a mounting clamp bolted to the rear of the support; a discharge counter is fixedly installed at the front of the support; an insulating base is connected to the bottom of the support via a U-shaped connector; the surge arrester body is installed below the insulating base, and the lower end of the arrester body is fixedly connected to one end of an elbow mounting plate via a connecting flange. A ball-head hanging ring is installed at the other end of the elbow mounting plate, connecting an upper discharge ring. The upper discharge ring is connected to a lower discharge ring via an insulating support, and the upper and lower discharge rings are positioned opposite each other. This utility model, through the combination of the channel steel support and the mounting clamp, achieves rapid and stable installation of the surge arrester on the crossarm of the steel pipe pole, eliminating the need for welding or drilling into the pole body, avoiding damage to the structural strength of the steel pipe pole, and improving installation efficiency and safety.

Description

Technical Field

[0001] This utility model belongs to the field of power system technology, and in particular relates to an installation structure for a surge arrester on a steel pipe pole line. Background Technology

[0002] In high-voltage and ultra-high-voltage transmission lines, lightning overvoltage is one of the main causes of line tripping, equipment damage, and even system failures. Therefore, surge arresters, as critical overvoltage protection devices, are widely used on support structures such as towers or steel pipe poles. Traditional surge arrester installation methods often involve direct welding of brackets, fixing with clamps, or suspending under the crossarm using complex hardware. These methods suffer from cumbersome installation procedures, damage to the pole structure, insufficient mechanical strength, and inconvenient maintenance. Especially in steel pipe pole lines, the smooth surface, closed cross-section, and the fact that on-site drilling or welding is usually not allowed make conventional installation methods difficult to apply. In addition, existing surge arrester structures often lack integrated discharge counting functions, or although they have counters, the wiring is messy and they are prone to moisture damage and failure. At the same time, some surge arresters lack effective external series discharge gap designs, which can easily generate leakage current under power frequency voltage, accelerate aging, and even cause thermal breakdown.

[0003] To address these issues, we have provided a steel pipe pole line surge arrester installation structure. Utility Model Content

[0004] The purpose of this utility model is to provide an installation structure for a surge arrester on a steel pipe pole. By adopting modular support components, external series discharge gaps, and an integrated discharge counter, it solves the problems in the prior art such as difficulty in installing surge arresters on steel pipe poles, poor structural stability, lack of effective discharge gaps, and inability to monitor the number of actions in real time.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to an installation structure for a surge arrester on a steel pipe pole line, comprising a channel steel bracket, with a mounting clamp fixedly connected to the tail end of the channel steel bracket by bolts; a discharge counter fixedly installed at the front end of the channel steel bracket; an insulating base connected to the bottom of the channel steel bracket by a U-shaped connector; a surge arrester body installed at the lower part of the insulating base, the lower end of the surge arrester body being fixedly connected to one end of an elbow mounting plate via a connecting flange; a ball head hanging ring installed at the other end of the elbow mounting plate, the ball head hanging ring being connected to an upper discharge ring; the upper discharge ring being connected to a lower discharge ring via an insulating support; and the upper and lower discharge rings being arranged opposite to each other.

[0006] The present invention is further configured such that the two ends of the U-shaped connector are respectively clamped to the two sides of the bottom flange of the channel steel bracket and fastened with bolts, and the connecting arm extending downward in the middle is bolted to the upper surface of the insulating base.

[0007] The present invention is further configured such that the surge arrester body is composed of multiple nonlinear resistor units connected in series, and each resistor unit is connected to the other via a metal connector.

[0008] The present invention is further configured such that the outer periphery of both the surge arrester body and the insulating support member are provided with disc-shaped umbrella skirts arranged continuously at equal intervals along the axial direction, and the disc-shaped umbrella skirts of different diameters are alternately arranged.

[0009] The present invention is further configured such that the mounting clamp is fixed to the crossbeam set on the steel pipe pole, and the crossbeam extends laterally out of the side wall of the steel pipe pole.

[0010] The present invention is further configured such that the surge arrester body is installed in a vertical direction, and the insulating support is inclinedly disposed between the upper discharge ring and the lower discharge ring.

[0011] The present invention is further configured such that the lower discharge ring is provided with a lifting lug for connecting the grounding lead wire, and the lifting lug is rotatably connected to the end of the lower discharge ring through a shaft.

[0012] The present invention is further configured such that the discharge counter has two terminals, one of which is electrically connected to the grounding terminal of the surge arrester body, and the other terminal is connected to the grounding down conductor, which is connected to the earth.

[0013] This utility model has the following beneficial effects: 1. This utility model achieves rapid and stable installation of the surge arrester on the crossarm of the steel pipe pole through the combination structure of the channel steel bracket and the mounting clamp. There is no need to weld or drill holes in the pole body, which simplifies the construction process, avoids damage to the structural strength of the steel pipe pole, and improves installation efficiency and safety.

[0014] 2. In this utility model, the upper and lower discharge rings form an external series gap through inclined insulating support members. This structure can not only reliably trigger discharge under lightning overvoltage and guide the current to be safely discharged through the surge arrester, but also maintain a high insulation level under normal operating voltage, significantly improving the lightning protection selectivity and system reliability of the line.

[0015] 3. The discharge counter in this utility model is directly integrated into the front end of the bracket and connected to the grounding terminal of the surge arrester and the grounding lead through two terminals respectively, so as to realize the real-time and accurate recording of the number of surge arrester operations, providing an important basis for condition-based maintenance and fault analysis. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the overall installation structure of a surge arrester for a steel pipe pole line.

[0018] Figure 2 A side view of the discharge counter installation structure of a surge arrester on a steel pipe pole line.

[0019] Figure 3 A front view of the discharge counter for the installation structure of a surge arrester on a steel pipe pole line.

[0020] The attached diagram lists the components represented by each number as follows: 1. Channel steel bracket; 2. Mounting clamp; 3. Discharge counter; 31. Terminal block; 4. U-shaped connector; 5. Insulating base; 6. Surge arrester body; 7. Elbow hanging plate; 8. Ball head hanging ring; 9. Upper discharge ring; 10. Lower discharge ring; 11. Insulating support; 12. Lifting lug. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example

[0022] Please see Figure 1-3 This utility model relates to an installation structure for a surge arrester on a steel pipe pole line, comprising a channel steel bracket 1, with a mounting clamp 2 fixedly connected to the tail of the channel steel bracket 1 by bolts; a discharge counter 3 fixedly installed at the front end of the channel steel bracket 1; an insulating base 5 connected to the bottom of the channel steel bracket 1 by a U-shaped connector 4; a surge arrester body 6 installed at the lower part of the insulating base 5, the lower end of the surge arrester body 6 being fixedly connected to one end of an elbow mounting plate 7 by a connecting flange; a ball head hanging ring 8 installed at the other end of the elbow mounting plate 7; an upper discharge ring 9 connected to the ball head hanging ring 8; and a lower discharge ring 10 connected to the upper discharge ring 9 by an insulating support 11, with the upper discharge ring 9 and the lower discharge ring 10 being arranged opposite each other.

[0023] The surge arrester installation structure for steel pipe pole lines provided in this embodiment achieves efficient, stable installation and reliable operation of the surge arrester on steel pipe pole lines through modular and layered mechanical and electrical integration. The overall structure uses a channel steel bracket 1 as the core load-bearing frame, and its tail is rigidly connected to the crossarm of the steel pipe pole through the mounting clamp 2, ensuring the structural stability of the entire device under strong winds or lightning strikes. The front end integrates a discharge counter 3 to monitor the number of surge arrester operations in real time, providing data support for operation and maintenance. The surge arrester is vertically arranged below the insulating base 5, which is conducive to the uniform distribution of the electric field and facilitates maintenance operations. The upper discharge ring 9 and the lower discharge ring 10 form a stable air gap structure through the inclined insulating support 11. This gap serves as an external series gap, which breaks down preferentially under lightning overvoltage, guiding the current to be discharged through the surge arrester, thereby avoiding damage to the main insulation.

[0024] Specifically, the surge arrester body 6 is composed of multiple nonlinear resistor units connected in series. Each resistor unit is connected by a metal connector. It can quickly conduct and discharge current during overvoltage and automatically return to a high-resistance state under normal operating voltage, effectively protecting the line equipment. The outer periphery of both the surge arrester body 6 and the insulating support 11 is provided with disc-shaped sheds arranged continuously at equal intervals along the axial direction. The disc-shaped sheds of different diameters are alternately arranged to optimize the electric field distribution, extend the creepage distance, and improve the anti-pollution flashover and weather resistance performance. The discharge counter 3 is provided with two terminals 31. One terminal 31 is electrically connected to the grounding terminal of the surge arrester body 6, and the other terminal 31 is connected to the grounding down conductor. The grounding down conductor is connected to the earth, forming a clear and low-resistance discharge path.

[0025] Furthermore, the two ends of the U-shaped connector 4 are respectively clamped to the bottom flanges of the channel steel bracket 1 and fastened with bolts, and the connecting arm extending downward in the middle is bolted to the upper surface of the insulating base 5; the mounting clamp 2 is clamped and fixed to the crossarm set on the steel pipe pole, and the crossarm extends laterally out of the side wall of the steel pipe pole; the surge arrester body 6 is installed in the vertical direction, and the insulating support 11 is inclined between the upper discharge ring 9 and the lower discharge ring 10; the lower discharge ring 10 is provided with a lifting lug 12 for connecting the grounding lead, and the lifting lug 12 is rotatably connected to the end of the lower discharge ring 10 through a shaft.

[0026] The operation process of this embodiment is as follows: First, select a suitable installation position on the crossarm of the steel pipe pole, put the installation clamp 2 on the outside of the crossarm, and fasten it to the tail of the channel steel bracket 1 with bolts to firmly fix the entire bracket structure on the steel pipe pole; then, insert both ends of the U-shaped connector 4 into the bottom flanges of the channel steel bracket 1 and lock them with bolts, and then connect the connecting arm at the bottom of the U-shaped connector 4 to the upper surface of the insulating base 5 with bolts to complete the installation of the insulating base 5; next, fix the surge arrester body 6 to one end of the elbow hanging plate 7 through the connecting flange at its top, and then assemble the other end of the elbow hanging plate 7 to the ball head hanging ring 8 to make the surge arrester body... The arrester is suspended vertically below the insulating base 5. Then, the ball-head hanging ring 8 is connected to the upper discharge ring 9 to ensure reliable electrical conduction. Next, the insulating support 11 is installed at an angle between the upper discharge ring 9 and the lower discharge ring 10 to form a stable external series discharge gap. The upper discharge ring 9 and the lower discharge ring 10 are positioned opposite each other to ensure consistent discharge paths and uniform electric field. Subsequently, the discharge counter 3 is pre-fixed to the front end of the channel steel bracket 1, and its two terminals 31 are connected to the grounding terminal and grounding lead of the arrester body 6, respectively. Finally, one end of the grounding lead is connected to the corresponding terminal of the discharge counter 3, and the other end is reliably connected to the ground, completing the overall installation of the arrester.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A structure for installing a lightning arrester for a steel pipe pole line, comprising a channel steel support (1), characterized in that: The tail of the channel steel bracket (1) is fixedly connected to the mounting clamp (2) by bolts; the front end of the channel steel bracket (1) is fixedly installed with a discharge counter (3); the bottom of the channel steel bracket (1) is connected to an insulating base (5) by a U-shaped connector (4); the lower part of the insulating base (5) is installed with a surge arrester body (6), the lower end of the surge arrester body (6) is fixedly connected to one end of the elbow hanging plate (7) by a connecting flange, the other end of the elbow hanging plate (7) is installed with a ball head hanging ring (8), the ball head hanging ring (8) is connected to an upper discharge ring (9), the upper discharge ring (9) is connected to a lower discharge ring (10) by an insulating support (11), and the upper discharge ring (9) and the lower discharge ring (10) are arranged opposite to each other.

2. The steel-pole line arrester mounting structure according to claim 1, characterized by The two ends of the U-shaped connector (4) are respectively clamped to the bottom two flanges of the channel steel bracket (1) and fastened with bolts, and the connecting arm extending downward in the middle is bolted to the upper surface of the insulating base (5).

3. The steel-pole line arrester mounting structure according to claim 1, characterized by The surge arrester body (6) is composed of multiple nonlinear resistor units connected in series, and each resistor unit is connected to the other by a metal connector.

4. The steel-pole line arrester mounting structure according to claim 1, characterized by Both the surge arrester body (6) and the insulating support (11) are provided with disc-shaped umbrella skirts arranged continuously at equal intervals along the axial direction on their outer periphery, and the disc-shaped umbrella skirts of different diameters are alternately arranged.

5. The steel pole line arrester mounting structure according to claim 1, characterized by, The mounting clamp (2) is clamped and fixed to the crossarm set on the steel pipe pole, and the crossarm extends laterally out of the side wall of the steel pipe pole.

6. The steel-pole line arrester mounting structure according to claim 1, characterized by The surge arrester body (6) is installed vertically, and the insulating support (11) is inclined between the upper discharge ring (9) and the lower discharge ring (10).

7. The steel-pole line arrester mounting structure according to claim 1, characterized by The lower discharge ring (10) is provided with a lifting lug (12) for connecting the grounding lead wire. The lifting lug (12) is rotatably connected to the end of the lower discharge ring (10) through a shaft.

8. The steel-pole line arrester mounting structure according to claim 1, characterized by The discharge counter (3) is provided with two terminals (31), one of which is electrically connected to the grounding terminal of the surge arrester body (6), and the other terminal (31) is connected to the grounding down conductor, which is connected to the earth.

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