Multi-column parallel lightning arrester

Abstract

The utility model provides a multi-column parallel lightning arrester, and relates to the technical field of lightning arresters. The multi-column parallel lightning arrester comprises three connecting columns, a plurality of resistor discs are fixed to the middle of each connecting column, two short-circuit sheets are fixed to the two ends of each connecting column, two fixing rods are fixed to the upper side of one short-circuit sheet, and fixing blocks are fixed to the upper ends of the two fixing rods. Springs are fixed to the upper ends of the two fixing blocks, protective frames are slidably connected to the outer surfaces of the two fixing blocks, and frame grooves are formed in the two sides of each protective frame; a connecting structure is arranged at the lower end of the protection frame. According to the multi-column parallel lightning arrester, the protection frame is driven by the impact force of a falling object to move downwards, the stress buffering effect is achieved, the effect of improving the use protection performance of the multi-column parallel lightning arrester is achieved, the protection frame is driven by the impact force of the falling object to move downwards, and the sweeping and cleaning effect is achieved; and the effect of improving the use effect of the multi-column parallel lightning arrester is achieved.

Description

Technical Field

[0001] This utility model relates to a multi-column parallel surge arrester, belonging to the field of surge arrester technology. Background Technology

[0002] In power systems, multi-pole parallel surge arresters are key devices for ensuring the safe operation of electrical equipment. Their main function is to limit overvoltage and protect electrical equipment from damage caused by lightning strikes and switching overvoltages. Traditional multi-pole parallel surge arresters can meet the overvoltage protection needs of conventional power systems to a certain extent. However, with the continuous development of power systems and the gradual increase in voltage levels, the performance requirements for surge arresters are becoming increasingly stringent.

[0003] Multi-column parallel surge arresters currently play a role in routine voltage protection. However, in practical applications, these arresters face numerous problems due to prolonged exposure to the elements. Firstly, they are susceptible to impacts from falling objects, which can damage them significantly, greatly reducing their protective capabilities and rendering the multi-column parallel surge arrester inadequate. Secondly, long-term exposure leads to the accumulation of dust and impurities on the arrester's surface. Over time, these deposits can affect electrical transmission performance, drastically reducing the arrester's effectiveness and ultimately hindering the optimal performance of the multi-column parallel surge arrester. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This utility model provides a multi-column parallel surge arrester to solve the problems of insufficient protection and poor performance of existing multi-column parallel surge arresters.

[0006] (II) Technical Solution

[0007] This utility model is achieved through the following technical solution: a multi-column parallel surge arrester, comprising three connecting columns, each of which has several resistors fixed in the middle, two shorting pieces fixed at both ends of the three connecting columns, two fixing rods fixed on the upper side of one of the shorting pieces, fixing blocks fixed at the upper ends of the two fixing rods, springs fixed at the upper ends of the two fixing blocks, and protective frames slidably connected to the outer surfaces of the two fixing blocks, with frame grooves opened on both sides of the protective frame;

[0008] The lower end of the protective frame is provided with a connecting structure, on which a brush holder is provided. The connecting structure can move the brush holder along the height of the fixed rod to sweep and clean the dust and impurities on the surface of the resistor sheet.

[0009] Preferably, the connecting structure includes a fixed frame, and a plurality of brush holders are fixed in the middle of the fixed frame.

[0010] Preferably, the vertical cross-section of the fixing frame is U-shaped, and the middle of the fixing frame has several through slots.

[0011] Preferably, each of the brush holders is fixed to the inner wall of the fixing frame, and the bristles of each brush holder are attached to the outer surface of the resistor sheet.

[0012] Preferably, the outer surface of each fixing block is slidably connected to the inner wall of each bracket groove, the cross-section of each fixing block is circular, and the upper end of each fixing rod is fixed to the middle of the lower end of each fixing block.

[0013] Preferably, the lower end of each spring is fixed to the upper side of each fixing block, the upper end of each spring is fixed to the inner wall of the upper end of each frame slot, and the protective frame is arranged above the shorting piece.

[0014] Preferably, the two ends of the three connecting posts are fixed to the sides of the two shorting pieces, and a number of resistor pieces are symmetrically distributed and fixed in the middle of the three connecting posts.

[0015] This utility model provides a multi-column parallel surge arrester, which has the following beneficial effects:

[0016] (1) The multi-column parallel surge arrester uses the impact force of falling objects to drive the protective frame to move downward, so that the fixed rod, fixed block, protective frame, frame groove and spring work together to achieve the effect of force buffering, avoid the impact force being applied to the surge arrester, prevent the surge arrester from being damaged by excessive impact, and thus improve the protective function of the multi-column parallel surge arrester.

[0017] (2) The multi-column parallel surge arrester uses the impact force of falling objects to drive the protective frame to move downward, so that the protective frame, fixed frame and brush frame work together to achieve the effect of sweeping and cleaning, effectively avoiding the impact of accumulated objects on electrical transmission performance, thereby improving the effect of multi-column parallel surge arrester. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial structural schematic diagram of the present invention;

[0020] Figure 3 This is a partial cross-sectional view of the present invention;

[0021] Figure 4 This utility model Figure 3 Enlarged view of the structure of part A.

[0022] [Explanation of Key Component Symbols]

[0023] 1. Connecting post; 2. Resistor element; 3. Shorting piece; 4. Fixing rod; 5. Fixing block; 6. Protective frame; 7. Frame slot; 8. Spring; 9. Fixing frame; 10. Brush holder. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Example 1

[0026] This utility model embodiment provides a multi-column parallel surge arrester.

[0027] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 It includes three connecting posts 1, which cooperate with several resistor pieces 2 and two shorting pieces 3 to achieve the effect of multiple posts in parallel. Several resistor pieces 2 are fixed in the middle of each connecting post 1. Two shorting pieces 3 are fixed at both ends of the three connecting posts 1. Two fixing rods 4 are fixed on the upper side of one of the shorting pieces 3. Fixing blocks 5 are fixed on the upper ends of the two fixing rods 4. Springs 8 are fixed on the upper ends of the two fixing blocks 5. Springs 8 provide elastic support. Protective frames 6 are slidably connected to the outer surfaces of the two fixing blocks 5. Frame grooves 7 are opened on both sides of the protective frame 6.

[0028] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4 It is worth noting that the outer surface of each fixing block 5 is slidably connected to the inner wall of each bracket groove 7, the cross-section of each fixing block 5 is circular, the upper end of each fixing rod 4 is fixed to the middle of the lower end of each fixing block 5, the lower end of each spring 8 is fixed to the upper side of each fixing block 5, the upper end of each spring 8 is fixed to the inner wall of the upper end of each bracket groove 7, the protective frame 6 is set above the shorting piece 3, the two ends of the three connecting posts 1 are fixed to the sides of the two shorting pieces 3, and several resistor pieces 2 are symmetrically distributed and fixed in the middle of the three connecting posts 1.

[0029] In use, this invention utilizes the impact force of falling objects to move the protective frame 6 downwards. Due to the limiting effect of the fixing rod 4, the protective frame 6 can only slide down along the fixing rod 4. During this downward movement, the protective frame 6 drives the spring 8 fixed to the inner wall of the frame groove 7. At this time, the fixing rod 4 and the fixing block 5 provide relatively stable support for the spring 8. As the protective frame 6 moves downwards, the spring 8 is compressed, generating elastic force. This elastic force buffers the impact force of falling objects, achieving a force buffering effect, preventing the entire impact force from being applied to the surge arrester, and preventing damage to the surge arrester due to excessive impact. This improves the protective performance of multi-column parallel surge arresters.

[0030] Example 2

[0031] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 Based on Embodiment 1, a cleaning function has been added;

[0032] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4 It is worth noting that the lower end of the protective frame 6 is provided with a connecting structure, which includes a fixed frame 9. Several brush holders 10 are fixed in the middle of the fixed frame 9. The vertical section of the fixed frame 9 is U-shaped. Several through slots are opened in the middle of the fixed frame 9. The side of each brush holder 10 is fixed to the inner wall of the fixed frame 9. The bristles of each brush holder 10 are attached to the outer surface of the resistor sheet 2.

[0033] In use, this invention utilizes the impact force of falling objects to move the protective frame 6 downwards. The protective frame 6 is fixedly connected to the fixed frame 9, and its downward movement causes the fixed frame 9 to move downwards simultaneously. Several brush holders 10 are fixed in the middle of the fixed frame 9. As the fixed frame 9 moves downwards, the brush holders 10 also move downwards. During this process, the bristles on the brush holders 10 contact the surface of the resistor element 2, sweeping away and cleaning the dust and impurities accumulated on the resistor element 2. This effectively prevents the accumulation of debris from affecting electrical transmission performance, thereby improving the performance of the multi-column parallel surge arrester.

[0034] 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-column parallel surge arrester, comprising three connecting columns (1), each connecting column (1) having a plurality of resistor plates (2) fixed in the middle, and two shorting plates (3) fixed at both ends of the three connecting columns (1), characterized in that: Two fixing rods (4) are fixed on the upper side of one of the shorting pieces (3), and a fixing block (5) is fixed on the upper end of each of the two fixing rods (4). A spring (8) is fixed on the upper end of each of the two fixing blocks (5). A protective frame (6) is slidably connected to the outer surface of the two fixing blocks (5). A frame groove (7) is opened on both sides of the protective frame (6). The lower end of the protective frame (6) is provided with a connecting structure, and a brush holder (10) is provided on the connecting structure. The connecting structure can move the brush holder (10) along the height direction of the fixed rod (4) to sweep and clean the dust and impurities on the surface of the resistor (2).

2. A multi-column parallel surge arrester according to claim 1, characterized in that: The connection structure includes a fixed frame (9), and a plurality of brush holders (10) are fixed in the middle of the fixed frame (9).

3. A multi-column parallel surge arrester according to claim 2, characterized in that: The vertical cut of the fixing frame (9) is U-shaped, and several through slots are provided in the middle of the fixing frame (9).

4. A multi-column parallel surge arrester according to claim 2, characterized in that: Each of the brush holders (10) is fixed to the inner wall of the fixing frame (9) on its side, and the bristles of each of the brush holders (10) are attached to the outer surface of the resistor sheet (2).

5. A multi-column parallel surge arrester according to claim 1, characterized in that: The outer surface of each fixing block (5) is slidably connected to the inner wall of each bracket groove (7), the cross-section of each fixing block (5) is circular, and the upper end of each fixing rod (4) is fixed to the middle of the lower end of each fixing block (5).

6. A multi-column parallel surge arrester according to claim 1, characterized in that: The lower end of each spring (8) is fixed to the upper side of each fixing block (5), and the upper end of each spring (8) is fixed to the inner wall of the upper end of each frame groove (7). The protective frame (6) is arranged above the shorting piece (3).

7. A multi-column parallel surge arrester according to claim 1, characterized in that: The three connecting posts (1) are fixed at both ends on the sides of the two shorting pieces (3), and a number of resistor pieces (2) are symmetrically distributed and fixed in the middle of the three connecting posts (1).

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