CN207704954U - Outdoor composite insulation high pressure lightning protection pillar - Google Patents

Abstract

The utility model is related to electric system high-voltage technologies and equipment manufacturing technical field, more particularly to a kind of outdoor composite insulation high pressure lightning protection pillar, including insulation tube, upper metal ring flange is arranged in the upper end of insulation tube, lower metal ring flange is arranged in the lower end of insulation tube, metal oxide valve block group is filled in the inside of insulation tube, and the outside of insulation tube is arranged silicone rubber jacket, full skirt is arranged on silicone rubber jacket；The utility model is combined the insulation of conventional high-pressure insulation column, support performance are integrated with the lightning protection properties of metal oxide arrester; both dielectric level is improved; there is good lightning protection effect again; it substation bus bar or access location can install and use outdoors; place space can either be saved; convenient for the compact Layout between electrical equipment; it can shorten and by the electrical mounting distance of protection equipment; effectively increase Transformer Substation Lightning Protection level; the reliability for being conducive to improve power supply, reduces a series of economic losses that equipment belt is damaged because of insulation breakdown.

Description

Outdoor composite insulation high pressure lightning protection pillar

Technical field

The utility model is related to electric system high-voltage technologies and equipment manufacturing technical field, and in particular to a kind of outdoor multiple Close Insulating A High-Voltage lightning protection pillar.

Background technology

Fast-developing with China's industrialization, urbanization, society's electricity consumption amount is significantly increased, national economy and power train construction in a systematic way If development is swift and violent, installed capacity, power grid scale and Analyzing Total Electricity Consumption have beaten the world, but since All population capacities are big, with Advanced country is still relatively low compared to electricity consumption level per capita, and following electricity needs will keep rapid growth trend, power grid to build for a long time It is increasing transporting and building substation if in the ascendant.Meanwhile requirement of the socio-economic development to power supply reliability is also more next It is higher, requirements at the higher level are proposed to the safe and reliable operation of power supply unit.

To ensure electrical safety distance and preventing the generation of dielectric breakdown accident caused by lightning surge, substation's construction A large amount of high-voltage insulation strut and metal oxide arrester are needed with old transformer station transformation, such as：Outdoor substation busbar A large amount of high-voltage insulation struts and metal oxide arrester are just needed with circuit inlet wire, both as important transformation device, especially Be existing structure composite insulation metal oxide arrester make moist problem of aging protrusion, running ageing rate and failure rate are inclined The security reliability of height, operation receives always power supply safety the concern of insider.At present conventional high-pressure insulation column and Metal oxide arrester can only take independent mounting means.High-voltage insulation strut is installed on substation bus bar framework for branch Support tube type bus simultaneously insulate, and is then connected with mounted on metal oxide arrester on ground architecture by the lead of certain length It connects, to limit the lightning surge on busbar；Circuit inlet wire segment distance reaches certain length, it is necessary to by mounted on ground structure High-voltage insulation strut on frame is given to support and fix, prevent lead it is long cause it is insufficient with alternate electrical safety distance over the ground, Or the excessive damage miscellaneous equipment of mechanical stress, since the metal oxide arrester of existing structure does not have load function, simultaneously Transformer equipment dielectric breakdown accident is caused to prevent lightning wave from invading substation along overhead transmission line, and is needed only in enter line side installation Vertical metal oxide arrester, increases floor space, is also unfavorable for the performance of lightning protection function, and needing exploration, more safety can The thunder-lightning overvoltage measure leaned on.

Utility model content

In order to solve the above-mentioned technical problem the deficiency in, the purpose of this utility model is that：It is compound absolutely to provide a kind of open air Edge high pressure lightning protection pillar had not only ensured its electric insulation level, mechanical strength, but also has had good lightning protection effect, can avoid being struck by lightning When lightning surge along overhead transmission line invade substation and cause transformer equipment to damage, the reliability of power supply can be improved, subtracted A series of few economic losses damaged equipment because of insulation breakdown and brought.

The utility model is that technical solution used by solving its technical problem is：

Upper metal flange is arranged in the upper end of the outdoor composite insulation high pressure lightning protection pillar, including insulation tube, insulation tube Disk, the lower end of insulation tube are arranged lower metal ring flange, and metal oxide valve block group is filled in the inside of insulation tube, insulation tube it is outer Portion is arranged silicone rubber jacket, and full skirt is arranged on silicone rubber jacket.

Preferably, metal oxide valve block group is cylindric, is laminated by multi-disc metal oxide valve block suit, upper end Cylindrical metal oxide valve block be connected with upper metal ring flange, the cylindrical metal oxide valve block of lower end and lower part Metal flange is connected, specific to be connect using sealing sleeve structure is closely coupled, ensures that lightning current aerial drainage circuit is unimpeded, and energy The integral insulation performance of device is improved, the anti-moisture superior performance of sealing sleeve structure effectively slows down metal oxide valve block fortune Under row voltage the problem of aging.

Preferably, insulation tube is high-strength epoxy insulation resin pipe or fiberglass insulating tube, and insulation tube is hollow ring structure, Tube wall thickness is uniform, and the tube length and electric insulation level of insulation tube can bear the normal operating voltage of corresponding voltage grade With various overvoltage, load ability and mechanical strength meet the various stress demands in place to use, and the surface of internal cavity of insulation tube is smooth, The mechanical strength and electrical insulation properties of the hollow ring structure of composition have a clear superiority compared with the cylindrical structure of homogenous quantities.

Preferably, silicone rubber jacket and full skirt are sleeved on the outer surface of insulation tube, forming apparatus by adhesive bonding External insulation increase creepage distance for reinforcing exterior insulation, improve antifouling work ability, and with the secondary seal in structure Function.

Preferably, screw hole is opened up on upper metal ring flange and lower metal ring flange, main function is connection and consolidates It is fixed, the effect of sealing is also functioned to, lower metal ring flange connect with Equipment Foundations, is bolted；Upper metal ring flange With fixing terminal, for fixing and supporting the metallic conductor in substation, to keep live part and ground connection or other electrifications Electrical safety distance between body.

Compared with prior art, the utility model has the advantages that：

The utility model is by the lightning protection of the insulation of conventional high-pressure insulation column, support performance and metal oxide arrester Can integration combine, not only improve dielectric level, but also have good lightning protection effect, can substation bus bar or access location outdoors It installs and uses, place space can either be saved, convenient for the compact Layout between electrical equipment, and separately installed arrester can be saved Necessary basis, shaft tower and guide wire and its connection gold utensil etc., reduce construction and equipment maintenance work amoun, can shorten with By the electrical mounting distance of protection equipment, Transformer Substation Lightning Protection level is effectively increased, is conducive to the reliability for improving power supply, reduces A series of economic losses of equipment belt are damaged because of insulation breakdown.

Cylindrical metal oxide valve block is set with stepped construction using multicolumn, and sealing is inside insulation tube, the annular of composition The electrical insulation properties and mechanical strength of structure have a clear superiority compared with the cylindrical structure of homogenous quantities, and homogenous quantities annular diameter It is big compared with body diameter, be conducive to the performance of the more uniform single valve block performance of field distribution, absorb the ability of overvoltage more Superior, upper and lower part metal flange connects with metal oxide valve block group using sealing sleeve structure is closely coupled, ensures lightning current Aerial drainage circuit is unimpeded, and can improve the integral insulation performance of device, and the anti-moisture superior performance of sealing sleeve structure effectively slows down Problem of aging under metal oxide valve block working voltage.

The epoxy resin or fiberglass insulating tube of use are easily fabricated, and molding assembly is good, and epoxy resin or fiberglass are exhausted Edge pipe itself has high mechanical shock resistance, and intensity is high, corrosion-resistant, ageing-resistant performance is strong, and electrical insulation properties are good, with use Other materials good compatibility, and it is anti-electricity, heat ageing and service life it is long, for external insulation silicon rubber insulation sheath and its absolutely Edge full skirt has the characteristics that antifouling work, electric erosion resistance are strong convenient for manufacture and suit.

This lightning protection pillar, more light-weight than porcelain high-voltage insulation strut, the comprehensive cost of integral structure is cheap, metal oxide Valve block field strength distribution uniformly makes its robust to repeated Motor ability strong, also can be used as the back-up protection measure of substation's internal overvoltage, Due to the exclusive voltammetric features of metal oxide valve block, keep the residual voltage of the lightning surge of installation place lower, interspike intervals are short, peace Full performance higher.

Description of the drawings

The structural schematic diagram of Fig. 1 the utility model.

In figure：1, screw hole；2, upper metal ring flange；3, metal oxide valve block group；4, metal oxide valve block；5, absolutely Edge pipe；6, silicone rubber jacket；7, full skirt；8, lower metal ring flange.

Specific implementation mode

The utility model embodiment is described further below in conjunction with the accompanying drawings：

Embodiment 1

As shown in Figure 1, outdoor composite insulation high pressure lightning protection pillar described in the utility model, including insulation tube 5, insulation tube 5 For high-strength epoxy insulation resin pipe or fiberglass insulating tube, insulation tube 5 is hollow ring structure, and tube wall thickness is uniform, insulation tube 5 Tube length and electric insulation level can bear the normal operating voltage of corresponding voltage grade and various overvoltage, load energy Power and mechanical strength meet the various stress demands in place to use, and the surface of internal cavity of insulation tube 5 is smooth, the hollow ring structure of composition Mechanical strength and electrical insulation properties have a clear superiority compared with the cylindrical structure of homogenous quantities；In the upper end setting of insulation tube 5 Portion's metal flange 2, the lower end setting lower metal ring flange 8 of insulation tube 5, valve metal oxide is filled in the inside of insulation tube 5 Piece group 3, metal oxide valve block group 3 are cylindric, are laminated by the suit of multi-disc metal oxide valve block 4, the cylinder of upper end Shape metal oxide valve block 4 is connected with upper metal ring flange 2, cylindrical metal oxide valve block 4 and the lower part gold of lower end Belong to ring flange 8 to be connected, it is specific to be connect using sealing sleeve structure is closely coupled, ensure that lightning current aerial drainage circuit is unimpeded, and energy The integral insulation performance of device is improved, the anti-moisture superior performance of sealing sleeve structure effectively slows down the fortune of metal oxide valve block 4 Under row voltage the problem of aging；The outside of insulation tube 5 is arranged silicone rubber jacket 6, and full skirt 7, silicon rubber is arranged on silicone rubber jacket 6 Sheath 6 and full skirt 7 are sleeved on the outer surface of insulation tube 5 by adhesive bonding, and the external insulation of forming apparatus is outer for reinforcing Portion insulate, and increases creepage distance, improves antifouling work ability, and with the secondary sealing function in structure.

Wherein, screw hole 1 is opened up on upper metal ring flange 2 and lower metal ring flange 8, main function is connection and consolidates It is fixed, the effect of sealing is also functioned to, lower metal ring flange 8 connect with Equipment Foundations, is bolted；Upper metal ring flange 2 carry fixing terminal, for fixing and supporting the metallic conductor in substation, to keep live part and ground connection or other electrifications Electrical safety distance between body.

The operation principle and specific work process of the utility model：

Metal oxide valve block group 3 has good nonlinear characteristic, under system normal operating voltage, metal oxide 3 leakage current of valve block group is only microampere order, and state of insulation is presented, once lightning surge wave is invaded along overhead transmission line, moment is in The grounded net of lightning current is leaked into the earth, thunder and lightning by existing conducting state, lightning current by lower metal ring flange 8 and its earthing or grounding means Wave terminates and restores to state of insulation.

The above is only the preferable case study on implementation of the utility model, is not to make other shapes to the utility model The limitation of formula, any person skilled in the art are changed or are modified as possibly also with the technology contents of the disclosure above With the equivalent embodiment of variation.But every without departing from the content of the technical scheme of the utility model, the technology according to the utility model Essence still falls within technical solutions of the utility model to any simple modification, equivalent variations and remodeling made by above example Protection domain.

Claims (5)

1. upper metal is arranged in the upper end of a kind of outdoor composite insulation high pressure lightning protection pillar, including insulation tube (5), insulation tube (5) Ring flange (2), the lower end setting lower metal ring flange (8) of insulation tube (5), which is characterized in that fill the inside of insulation tube (5) The outside of metal oxide valve block group (3), insulation tube (5) is arranged silicone rubber jacket (6), and full skirt is arranged on (6) in silicone rubber jacket (7)。

2. outdoor composite insulation high pressure lightning protection pillar according to claim 1, which is characterized in that metal oxide valve block group (3) it is cylindric, is laminated by multi-disc metal oxide valve block (4) suit.

3. outdoor composite insulation high pressure lightning protection pillar according to claim 1, which is characterized in that insulation tube (5) is high-strength Epoxy resins insulation pipe or fiberglass insulating tube, insulation tube (5) are hollow ring structure, and surface of internal cavity is smooth.

4. outdoor composite insulation high pressure lightning protection pillar according to claim 1 or 3, which is characterized in that silicone rubber jacket (6) And full skirt (7) is sleeved on the outer surface of insulation tube (5) by adhesive bonding.

5. outdoor composite insulation high pressure lightning protection pillar according to claim 1, which is characterized in that upper metal ring flange (2) and on lower metal ring flange (8) screw hole (1) is opened up.