Plug-in lightning arrester

Abstract

The utility model relates to the technical field of lightning arresters, in particular to a plug-in lightning arrester which comprises a base, a plurality of insulating support columns which are symmetrically arranged are fixedly connected to the base, and an insulating cylinder is fixedly connected to the center of the top end of the base; the device further comprises an outward turning mechanism, the outward turning mechanism comprises two mounting blocks, a rubber layer and a plurality of top frames, the top end of the rubber layer is fixedly connected with a moving frame, the inner ring of the moving frame is fixedly connected with a plurality of limiting blocks which are symmetrically arranged, the mounting blocks are internally provided with sliding grooves which are symmetrically arranged, and the interiors of the sliding grooves are fixedly connected with springs. The lightning arrester has the beneficial effects that not only can rainwater be isolated and the base be prevented from being wetted, but also the rainwater can be guided to quickly flow to the ground by utilizing the arch-shaped structure of the rubber layer, so that water accumulation on the base is fundamentally prevented, and the overall service life of the lightning arrester is further effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lightning arresters, in particular to a plug -in lightning arrester. BACKGROUND

[0002] The plug-in lightning arrester is a kind of overvoltage protection equipment for power system (especially medium-low voltage distribution network), and the core feature is that installation replacement does not need to disassemble bus or power off (part model), and operation is convenient, and the overvoltage generated by lightning stroke or operation can be quickly inhibited.

[0003] In prior art, the top end of lightning arrester base is mostly plane design, under long time rainy weather, plane structure causes rainwater to be difficult to quickly flow downward, and waterlogging is easily formed at the top end of base, to further possibly cause problems such as base insulation damp, metal part rust, affect the overall operation stability of lightning arrester, affect the service life of lightning arrester. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a plug-in lightning arrester to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a plug-in lightning arrester, including base, the base is fixedly connected with the symmetry of multiple insulating support columns, the center position at the top end of base is fixedly connected with insulating cylinder, the top end of insulating cylinder is fixedly connected with terminal, resistance sheet group is fixedly installed in the inside of insulating cylinder, the outer wall of insulating cylinder is fixedly connected with silica gel umbrella group;

[0006] It further includes a turning mechanism, the turning mechanism includes two mounting blocks, a rubber layer and a plurality of top frames, the top end of the rubber layer is fixedly connected with a moving frame, a plurality of limiting blocks are fixedly connected to the inner circle of the moving frame, symmetrically arranged grooves are formed in the interiors of the mounting blocks, springs are fixedly connected in the interiors of the grooves, and pressure receiving blocks are slidably connected to the interiors of the grooves at positions corresponding to one end of the springs.

[0007] Preferably, the mounting blocks are fixedly connected to the front wall and the back wall of the base respectively, and the rubber layer is slidably sleeved at the bottom end of the insulating cylinder.

[0008] Preferably, the top frames are all C-shaped, and there are four top frames.

[0009] Preferably, the top frames are all fixedly connected to the base at positions corresponding to the insulating support columns, and the top frames are all inclined.

[0010] Preferably, one end of the pressure receiving block is fixedly connected to the corresponding spring.

[0011] Compared with the prior art, the beneficial effects of the utility model are that the everted mechanism can completely wrap the lightning arrester base after operation, and when the rubber layer in the everted mechanism moves downward, the center position of the insulating cylinder will form an arch shape due to the support of the top frame, which not only can isolate rainwater and prevent the base from being wetted, but also can guide rainwater to flow to the ground quickly by using the arch structure of the rubber layer, fundamentally prevents the base from accumulating water, and effectively prolongs the overall service life of the lightning arrester. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a front view structural schematic diagram of the utility model;

[0013] Figure 2 It is a cross section of the mounting block and a structure schematic diagram of the rubber layer separation of the moving frame of the utility model;

[0014] Figure 3 It is a cross section of the rubber layer structure schematic diagram of the utility model;

[0015] Figure 4 It is a structure schematic diagram of the inner ring of the moving frame of the utility model;

[0016] Figure 5 It is a cross section of the insulating cylinder of the utility model.

[0017] In the drawing: 1, base; 2, insulating support column; 3, insulating cylinder; 4, terminal; 5, resistance sheet group; 6, everted mechanism; 61, mounting block; 62, rubber layer; 63, top frame; 64, moving frame; 65, limit block; 66, sliding slot; 67, spring; 68, pressure receiving block; 7, silica gel umbrella group. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0019] Please refer to Figures 1-5 The utility model provides the following technical schemes:

[0020] Embodiment one: a plug-in lightning arrester, including base 1, the base 1 is fixedly connected with the symmetry arranged multiple insulating support columns 2, the base 1 top end center position is fixedly connected with insulating cylinder 3, and the insulating cylinder 3 top end is fixedly connected with terminal 4, and the insulating cylinder 3 inside is fixedly installed with resistance sheet group 5, and the insulating cylinder 3 outer wall is fixedly connected with silica gel umbrella group 7;

[0021] In use, in normal operation, the insulation cylinder 3, the insulation support column 2 and the outer wall silica gel umbrella group 7 jointly construct an insulation system, the silica gel umbrella group 7 increases the creepage distance and guides and drains rainwater, the resistance sheet group 5 is in a high resistance state with low voltage, and no current is conducted. When an overvoltage occurs, the overvoltage is conducted to the resistance sheet group 5 through the wiring terminal 4, the resistance of the resistance sheet group 5 is suddenly reduced to form a path, and a large current is discharged to the ground through the base 1. After the overvoltage disappears, the resistance sheet group 5 returns to the high resistance state, each insulation component maintains isolation, the lightning arrester returns to standby, and overvoltage protection is realized.

[0022] In this embodiment, the technical scheme is different from that of embodiment one, and further includes an outward turning mechanism 6, which includes two mounting blocks 61, a rubber layer 62, and a plurality of top frames 63. The rubber layer 62 has a moving frame 64 fixedly connected to the top end thereof. A plurality of limiting blocks 65 are symmetrically arranged and fixedly connected to the inner circle of the moving frame 64. A sliding groove 66 is formed in each of the mounting blocks 61, and a spring 67 is fixedly connected to the inner part of the sliding groove 66. A pressure receiving block 68 is slidably connected to the position of one end of the spring 67 in the sliding groove 66.

[0023] The mounting blocks 61 are fixedly connected to the front wall and the back wall of the base 1, respectively. The rubber layer 62 is slidably sleeved at the bottom end of the insulation cylinder 3. The top frames 63 are all C-shaped. There are four top frames 63, and each top frame 63 is fixedly connected to the top end of the base 1 at a position corresponding to the insulation support column 2. The top frames 63 are all inclined. One end of each pressure receiving block 68 is fixedly connected to the corresponding spring 67.

[0024] In use, the moving frame 64 can be manually lowered, and the lowering of the moving frame 64 drives the plurality of limiting blocks 65 to move downward together. The moving frame 64 is fixedly connected to the top of the rubber layer 62, so that the moving frame 64 also drives the top of the rubber layer 62 to move downward. When the top of the rubber layer 62 is moved downward, the bottom of the rubber layer 62 is subjected to an upward force, and the part of the rubber layer 62 connected to the insulating cylinder 3 is moved upward. During the movement of the rubber layer 62, the outer wall of the rubber layer 62 abuts against the plurality of top frames 63, so that the rubber layer 62 is continuously turned outward during the movement. When the limiting block 65 on the moving frame 64 moves to the position corresponding to the bottom end of the pressure block 68 on the base 1, the limiting block 65 is pressed against the pressure block 68, so that the pressure block 68 is retracted into the sliding groove 66. The retracted pressure block 68 is pressed against the corresponding spring 67. When the limiting block 65 moves to the position corresponding to the bottom end of the pressure block 68, the limiting block 65 is misaligned with the pressure block 68, and the limiting block 65 is no longer pressed against the pressure block 68. The spring 67 drives the pressure block 68 to protrude out of the sliding groove 66 and return to the original position. The returned pressure block 68 is located at the top end of the limiting block 65, and the pressure block 68 blocks the limiting block 65, so that the position of the moving frame 64 is limited. At this time, the moving of the moving frame 64 is completed, and the rubber layer 62 is completely turned outward to wrap the base 1. Due to the support of the top frame 63, the part of the rubber layer 62 connected to the insulating cylinder 3 is moved to the limit position and forms an arch shape. At this time, the rainwater cannot wet the base 1. Since the rubber layer 62 is made of rubber, the part of the rubber layer 62 connected to the insulating cylinder 3 has good sealing performance, and the rainwater cannot pass through. The arch-shaped structure of the rubber layer 62 can guide the rainwater to flow to the ground quickly.

[0025] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A plug-in lightning arrester, comprising a base (1), a plurality of symmetrical insulating support columns (2) are fixedly connected on the base (1), an insulating cylinder (3) is fixedly connected at the center position of the top end of the base (1), a wiring terminal (4) is fixedly connected at the top end of the insulating cylinder (3), a resistance sheet group (5) is fixedly installed inside the insulating cylinder (3), and a silica gel umbrella group (7) is fixedly connected on the outer wall of the insulating cylinder (3); characterized in that It also comprises an everted mechanism (6), the everted mechanism (6) comprises two mounting blocks (61), a rubber layer (62) and a plurality of top frames (63), the top end of the rubber layer (62) is fixedly connected with a moving frame (64), a plurality of limiting blocks (65) are fixedly connected on the inner circle of the moving frame (64), a symmetrical sliding slot (66) is formed in each of the mounting blocks (61), a spring (67) is fixedly connected inside each of the sliding slots (66), and a pressure receiving block (68) is slidingly connected at the position of one end of each spring (67) inside the sliding slot (66).

2. A plug-in surge arrester according to claim 1, characterized in that: The mounting blocks (61) are fixedly connected on the front wall and the back wall of the base (1) respectively, and the rubber layer (62) is slidingly sleeved at the bottom end position of the insulating cylinder (3).

3. A plug-in surge arrester according to claim 1, characterized in that: The top frames (63) are all C-shaped in specific shape, and four top frames (63) are provided in total.

4. The pluggable surge arrester of claim 1, wherein: The top frames (63) are all fixedly connected at the positions corresponding to the insulating support columns (2) at the top end of the base (1), and the top frames (63) are all inclined.

5. A plug-in surge arrester according to claim 1, characterized in that: One end of each pressure receiving block (68) is fixedly connected with the corresponding spring (67).

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