CN211907113U

CN211907113U - Lightning protection porcelain post insulator

Info

Publication number: CN211907113U
Application number: CN202020918040.5U
Authority: CN
Inventors: 谢欣
Original assignee: Sichuan Xinxiang Porcelain Co ltd
Current assignee: Sichuan Xinxiang Porcelain Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-11-10
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a lightning protection porcelain post insulator, which comprises an insulator, the top fixedly connected with of insulator is the clamp splice down, the middle swing joint of clamp splice has the screw rod down, the upper end swing joint that the screw rod passed down the clamp splice has last clamp splice, the upper end swing joint that the screw rod passed last clamp splice has tight nut that revolves, the right-hand member fixedly connected with striking stick of clamp splice down, discharge metal bar on the below fixedly connected with of clamp splice down, the lower extreme that goes up discharge metal bar is located the inside cavity of insulator, the metal block under the below fixedly connected with of insulator, the top fixedly connected with of metal block transfers the discharge metal bar down, the below fixedly connected with discharge screw rod of metal block down. The utility model discloses a discharging rod and anti-electric arc about setting up have greatly avoided the wire by the thunderbolt, have reduced the possibility of insulator damage behind the thunderbolt.

Description

Lightning protection porcelain post insulator

Technical Field

The utility model relates to an electric power overhead insulated line thunderbolt protection technical field especially relates to a lightning protection porcelain post insulator.

Background

At present, the lightning protection of overhead distribution lines at home and abroad has the following main measures: the method comprises the steps of erecting an overhead ground wire, installing a clamp clamping insulator, installing an overvoltage protector on a column type insulator, and installing an arc protection hardware fitting on a load side. The high-voltage isolating switch but the prior art has the following disadvantages: the investment cost is large, the construction and installation are complex, the insulating layer needs to be stripped, the water and corrosion of the wire core are caused, and the umbrella skirt of the porcelain insulator is burnt due to arcing and is influenced by the change of the power supply load side of the ring network.

With the development of distribution lines and the insulation of line transformation, the traditional design of epoxy resin sleeves is difficult to bear the action of direct lightning or induced lightning due to the inherent insufficient lightning resistant level of an insulated line, and the lightning breakage, porcelain insulator explosion and the like become a new problem facing electric power.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the lightning-proof level is not high when the insulator meets with the thunderbolt among the prior art, and the lightning protection porcelain post insulator that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a lightning protection porcelain post insulator, includes the insulator, the top fixedly connected with of insulator is down the clamp wire piece, the centre swing joint of clamp wire piece has the screw rod down, the upper end swing joint that the screw rod passed down the clamp wire piece has last clamp wire piece, the upper end swing joint that the screw rod passed last clamp wire piece has tight turnnut, the right-hand member fixedly connected with striking stick of lower clamp wire piece, discharge metal bar on the below fixedly connected with of lower clamp wire piece, the lower extreme that goes up discharge metal bar is arranged in the inside cavity of insulator, the metal block under the below fixedly connected with of insulator, the top fixedly connected with of metal block transfers discharge metal bar down, the below fixedly connected with discharge screw rod of metal block down.

Preferably, umbrella skirts with alternate sizes are arranged on the side faces of the insulator.

Preferably, metal sealing layers are respectively arranged at two ends of the cavity.

Preferably, the arc striking rod is fixedly connected with the lower wire clamping block through a bolt, and a spherical discharge bulge is arranged at the tail end of the arc striking rod.

Preferably, the lower wire clamping block, the upper wire clamping block, the screw rod and the arc striking rod are covered in the insulation shield.

Preferably, the end of the upper discharging metal rod far away from the lower wire clamping block and the end of the lower discharging metal rod far away from the lower metal block are respectively provided with a spherical bulge, and a certain gap is reserved between the spherical bulges and the lower metal block.

Compared with the prior art, the utility model discloses possess following advantage:

1. the design of the large umbrella skirt and the small umbrella skirt improves the anti-pollution capacity of the insulator, the design of the thorn teeth can facilitate installation and construction, the insulating layer of the insulator wire does not need to be stripped, the water inlet and corrosion of the wire core are avoided, and the labor intensity of operators can be greatly reduced.

2. The design that the end of the upper discharging metal rod far away from the lower wire clamping block and the spherical bulge of the end of the lower discharging metal rod far away from the lower metal block improves the discharging probability, and the design of the arc striking rod improves the overall lightning resistance of the insulator.

3. The design of ceramic insulator has improved the life of device, has increased antipollution level, has increased creepage distance, and the design of protection casing makes insulator top device be difficult for receiving the pollution of environment, has improved the leakproofness of insulator, has increased the life of insulator.

Drawings

Fig. 1 is a schematic structural view of a lightning protection porcelain post insulator according to the present invention;

fig. 2 is the utility model provides a lightning protection porcelain post insulator's last clamp splice and lower clamp splice enlarge the schematic diagram.

In the figure: 1 insulator, 2 lower wire clamping blocks, 3 lower metal blocks, 4 arc striking rods, 5 upper wire clamping blocks, 6 insulating shields, 7 screw rods, 8 screwing nuts, 9 barbed teeth, 10 bolts, 11 discharging bulges, 12 metal sealing layers, 13 upper discharging metal rods, 14 lower discharging metal rods, 15 discharging cavities and 16 discharging screw rods.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a lightning protection porcelain post insulator comprises an insulator 1, wherein the insulator 1 is made of ceramic materials and can play a role of insulating and supporting a wire, a lower wire clamping block 2 is fixedly connected above the insulator 1, a screw rod 7 is movably connected in the middle of the lower wire clamping block 2, threads are arranged on the screw rod 7, the screw rod 7 and the lower wire clamping block 2 are made of metal materials, the upper end of the screw rod 7 penetrating through the lower wire clamping block 2 is movably connected with an upper wire clamping block 5, the upper end of the screw rod 7 penetrating through the upper wire clamping block 5 is movably connected with a tightening nut 8, the right end of the lower wire clamping block 2 is fixedly connected with an arc striking rod 4, the arc striking rod 4 is of an arc structure and can play a role of guiding an electric arc, an upper discharge metal rod 13 is fixedly connected below the lower wire clamping block 2, the lower end of the upper discharge metal rod 13 is positioned in a cavity 15 inside the insulator 1, and a lower, the top fixedly connected with of lower metal block 3 descends electric metal rod 14, and the below fixedly connected with of lower metal block 3 discharges screw rod 16, and discharge screw rod 16 connects on the drainage wire.

More preferably, the side of the insulator 1 is provided with umbrella skirts with different sizes, so that the material is saved, the pollution flashover resistance of the insulator is improved, and the damage to the insulator 1 caused by flashover discharge of the arc striking rod 4 is reduced.

Further, the two ends of the cavity 15 are respectively provided with the metal sealing layers 12, the existence of the metal sealing layers can further improve the sealing performance of the cavity 15, the arc striking rod 4 and the lower wire clamping block 2 are fixedly connected through the bolt 10, the arc striking rod and the lower wire clamping block can be separated from each other, when the arc striking rod is damaged, replacement can be carried out respectively according to needs, the tail end of the arc striking rod 4 is provided with the spherical discharging protrusion 11, and when lightning strike is contacted, electric arc is convenient to carry out flashover discharge with the lower metal block 3 at the discharging protrusion 11 through the arc striking rod 4.

Further, lower clamp splice 2, go up clamp splice 5, screw rod 7, the cladding of striking stick 4 is in insulating guard 6's inside, insulating guard 6 adopts the integrated design, can play the effect of the device more than the protection, the one end that the one end of clamp splice 2 was kept away from down to the last metal bar 13 and the one end of the metal block was kept away from down to the metal bar of discharging are provided with spherical arch respectively, and leave certain space between the two, improve the possibility of discharging between the two, use with the cooperation of striking stick 4 and can improve the anti thunder ability of insulator.

The working principle is as follows:

when a lightning strike occurs, the current is conducted to the lower wire clamping block 2 and can be conducted to the discharge screw 16 through two modes, the first mode is that the current is discharged through a flashover between the discharge protrusion 11 at the tail end of the arc striking rod 4 and the lower metal block 3 to form a short circuit channel, and a continuous power frequency arc is combusted between the discharge protrusion 11 and the lower metal block 3 to play a role in protecting a lead; the second mode is that the current discharges through flashover between last discharge metal rod 13 and the metal rod 14 that discharges down, forms the short circuit passageway, can reach the effect the same with first mode, and two kinds of modes are mutually supported, have improved the anti thunder ability of insulator.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The lightning protection porcelain post insulator comprises an insulator (1) and is characterized in that a lower wire clamping block (2) is fixedly connected above the insulator (1), a screw rod (7) is movably connected in the middle of the lower wire clamping block (2), the upper end of the lower wire clamping block (2) penetrated by the screw rod (7) is movably connected with an upper wire clamping block (5), the upper end of the upper wire clamping block (5) penetrated by the screw rod (7) is movably connected with a tightening nut (8), the right end of the lower wire clamping block (2) is fixedly connected with an arc striking rod (4), the lower part of the lower wire clamping block (2) is fixedly connected with an upper discharging metal rod (13), the lower end of the upper discharging metal rod (13) is positioned in a cavity (15) inside the insulator (1), the lower part of the insulator (1) is fixedly connected with a lower metal block (3), the upper part of the lower metal block (3) is fixedly connected with an electricity discharging metal rod (14), and a discharge screw (16) is fixedly connected below the lower metal block (3).

2. The lightning protection porcelain post insulator according to claim 1, wherein the insulator (1) is provided with sheds of alternating size on its sides.

3. The lightning protection porcelain post insulator according to claim 1, wherein a metal sealing layer (12) is provided at each end of the cavity (15).

4. The lightning protection porcelain post insulator according to claim 1, wherein the arc striking rod (4) is fixedly connected with the lower wire clamping block (2) through a bolt (10), and a spherical discharge protrusion (11) is arranged at the tail end of the arc striking rod (4).

5. The lightning protection porcelain post insulator according to claim 4, wherein the lower wire clamping block (2), the upper wire clamping block (5), the screw rod (7) and the arc striking rod (4) are coated inside the insulating shield (6).

6. The lightning protection porcelain post insulator according to claim 1, wherein the end of the upper discharging metal rod (13) away from the lower wire clamping block (2) and the end of the lower discharging metal rod (14) away from the lower metal block (3) are respectively provided with a spherical bulge, and a certain gap is left between the spherical bulges and the spherical bulges.