CN105322449B - A kind of distribution line on-pole switch insulating boot - Google Patents

Abstract

The invention relates to a switch insulation cover on a power distribution line column, which mainly includes an insulation cover body, an insulation sleeve and a hot-dip flat iron for connection. The inside of the insulation body is provided with three insulation sleeves, and the insulation sleeve passes through a galvanized The bolts are fixed on the insulating body, and the bottom of the insulating body is fixed with two hot-dip flat irons by bolts. The switch body on the column is fixed with three pairs of arresters evenly arranged by the arrester bracket, and the middle pair of arresters is connected to the hot-dip plated The flat iron is connected and fixed, and there are adjustment bolt holes at the joint of the lightning arrester bracket connected to the hot-dip flat iron, corresponding to the bolt holes on the lightning arrester bracket, and the corresponding positions of each lightning arrester are provided with insulating support sleeves and switch studs. The beneficial effects of the present invention are: the present invention is reasonable in structure, easy to use, and has good fixing effect, and can effectively prevent line faults caused by birds nesting on switches on distribution line posts, and avoid line tripping.

Description

A switch insulation cover on a distribution line pole

technical field

The invention relates to an insulating cover structure, in particular to a switch insulating cover on a power distribution line post.

Background technique

The switch on the pole is one of the main components of the overhead line. At present, pole-mounted switches are mostly used for load breaking of overhead distribution lines. Pole-mounted switches are installed outdoors for many years, with many supporting equipment (such as lightning arresters, etc.), and the distance between live and exposed parts is relatively close. In the season of bird damage (November to May of the following year), because its structure is very suitable for birds such as magpies to build nests on it, and it lacks effective protection between phases or ground, many cases of line failures and trips are caused. According to the statistics of Tongxiang Power Supply Company, in 2013-2014, this fault accounted for 56% of all distribution line bird trips, reaching as many as 73 times, causing economic and other losses to the majority of electricity customers.

Contents of the invention

The present invention aims to solve the above-mentioned shortcomings of the prior art, and provides an insulating cover for a switch on a distribution line pole that can be fixed on a switch on a pole, has the function of insulation protection, and prevents birds from nesting on the switch.

The technical scheme adopted by the present invention to solve the technical problem: the switch insulation cover on the distribution line column mainly includes the insulation cover body, the insulation sleeve and the connecting hot-dip flat iron, and the inside of the insulation cover body is provided with 3 insulation sleeves , the insulating sleeve passes through galvanized bolts and is fixed on the insulating cover body, the bottom of the insulating cover body is fixed with two hot-dip flat irons connected by bolts, and the switch body on the column is fixed with three pairs of evenly arranged lightning arrester brackets. Lightning arrester, the middle pair of lightning arresters are connected and fixed with hot-dip flat iron, and there are adjustment bolt holes at the joint of the lightning arrester bracket connected to the hot-dip flat iron, corresponding to the bolt holes on the lightning arrester bracket, and the corresponding position of each lightning arrester Equipped with insulating support sleeve and switch stud.

The insulating cover body is composed of baffle plates on both sides and a top plate on the top.

The baffle is trapezoidal, and there is a groove on the bottom edge of the baffle, where the hot-dip flat iron is connected to the groove, and the groove corresponds to the switch body on the column.

The insulating cover body and the insulating sleeve are made of epoxy resin insulating plates with a thickness of 6 mm.

The beneficial effects of the present invention are: the present invention is reasonable in structure, convenient to use, and has good fixing effect, and can effectively prevent line faults caused by birds nesting on switches on distribution line posts, and avoid line tripping.

Description of drawings

Fig. 1 is the structure schematic diagram of looking up of the present invention;

Fig. 2 is a schematic diagram of the main view structure of the present invention;

Fig. 3 is a side view structural representation of the present invention;

Fig. 4 is a schematic diagram when not using the present invention;

Fig. 5 is a schematic diagram after using the present invention.

Explanation of reference numerals: pole-mounted switch body 1, lightning arrester 2, insulating support sleeve 3, lightning arrester bracket 4, switch column head 5, insulating sleeve 6, galvanized bolt 7, connecting hot-dip flat iron 8, bolt 9, insulating cover The main body 10, the connection part 11 of the lightning arrester bracket, the baffle plate 12, and the top plate 13.

detailed description

The present invention will be further described below in conjunction with accompanying drawing:

As shown in the figure, the switch insulation cover on the distribution line column mainly includes an insulation cover body 10, an insulation sleeve 6 and a hot-dip flat iron 8 connected to it. The inside of the insulation cover body 10 is provided with three insulation sleeves 6, The insulating sleeve 6 is Φ20mm, and there are galvanized bolts 7 fixed on the insulating cover body 10 through the insulating sleeve 6. The galvanized bolts 7 are Φ16×300mm, and the bottom of the insulating cover body 10 is fixed by two bolts 9 to connect Hot-dip flat iron 8, the switch body 1 on the column is fixed with 3 pairs of evenly arranged arresters 2 through the arrester bracket 4, the middle pair of arresters 2 is connected and fixed with the hot-dip flat iron 8, and connected to the hot-dip flat iron 8 The connection 11 of the lightning arrester bracket is provided with adjustment bolt holes, which can be adjusted according to the actual size of the site, corresponding to the bolt holes on the lightning arrester bracket 4, and the corresponding position of each lightning arrester 2 is provided with an insulating support sleeve 3 and a switch column head 5 .

The insulating cover body 10 is composed of baffles 12 on both sides and a top plate 13 on the top. The baffles 12 are trapezoidal. There are grooves on the bottom edge of the baffles 12. The connecting hot-dip flat iron 8 is located in the grooves, and the grooves are connected to the columns. The switch body 1 corresponds. After the switch insulation cover on the distribution line column is installed, the top view shape of the switch on the column can be changed, and the original bird nesting position is closed, and the shape changes from concave to convex, so that the birds give up the idea of nesting on the switch on the column. The insulating cover body 10 and the insulating sleeve 6 are made of epoxy resin insulating sheet with a thickness of 6 mm, which can withstand a voltage level of 35 kV and below. The outer surface of the cover body is smooth without obvious gaps, and firewood cannot be placed on the surface.

When installing, first remove the two intermediate phases of the switch arrester 2 on the pole; then align the hot-dip flat iron 8 connected to the switch insulation cover on the distribution line pole with the connection hole of the arrester bracket 4 (the removed arrester hole) ; Finally, install the switch arrester 2 on the pole back to its original position, connect the hot-dip flat iron 8 to the arrester bracket 4, and fasten it, and the installation is completed. The switch insulation cover on the distribution line column is assembled as a whole. When installing, you only need to align the bolt holes at the connection point 11 of the arrester bracket with the bolt holes of the switch arrester bracket 4 on the column, and then tighten them with bolts. The installation is quick and simple.

After the switch insulation cover on the distribution line column is installed, the inside of the cover is made of insulating material, and each part does not directly contact the charged body, and the distance is kept above 150mm, leaving sufficient air gaps to prevent circulation inside and outside the cover. After the switch insulation cover on the distribution line column is installed, even if there are branches or firewood falling on the upper cross arm, the insulation cover can lift it up, and keep a sufficient safe distance from the live exposed parts of the switch on the column, so as not to cause failure. The insulating cover of the switch on the distribution line column is firmly installed. According to the needs of the field, the cover body is reinforced and can resist typhoons of level 12.

Through the installation of the switch insulation cover on the distribution line column, the trip times of the switch on the distribution line column due to bird damage are effectively reduced. The number of switch rod fault trips has been greatly reduced, which has achieved great economic benefits and also contributed to the improvement of power supply reliability.

In addition to the above-mentioned embodiments, the present invention can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims (3)

1. A switch insulating cover on a distribution line post mainly includes an insulating cover body (10), an insulating bushing (6) and a hot-dip flat iron (8), and is characterized in that: the inside of the insulating cover body (10) There are 3 insulating sleeves (6), and galvanized bolts (7) pass through the insulating sleeves (6) and are fixed on the insulating cover body (10), and the bottom of the insulating cover body (10) is passed through the bolts (9) There are 2 connected hot-dip flat irons (8) fixed, 3 pairs of evenly arranged arresters (2) are fixed on the switch body (1) on the column through the arrester bracket (4), and the middle pair of arresters (2) are connected to the The hot-dip flat iron (8) is connected and fixed, and the connection point (11) of the arrester support on the hot-dip flat iron (8) is provided with adjustment bolt holes, which correspond to the bolt holes on the arrester support (4), and each arrester ( 2) The corresponding position is provided with an insulating support sleeve (3) and a switch column head (5). The insulating cover body (10) is composed of baffles (12) on both sides and a top plate (13) on the top. The baffle (12) is trapezoidal. 2. The switch insulation cover on the distribution line column according to claim 1, characterized in that: there is a groove on the bottom edge of the baffle (12), and the connecting hot-dip flat iron (8) is located at the groove, and the groove The groove corresponds to the switch body (1) on the pole. 3. The switch insulation cover on the distribution line pole according to claim 1, characterized in that: the insulation cover body (10) and the insulation sleeve (6) are made of epoxy resin insulation board with a thickness of 6 mm.