CN212473175U

CN212473175U - Sectional insulator for 25kV electrified railway contact net

Info

Publication number: CN212473175U
Application number: CN202021427325.5U
Authority: CN
Inventors: 王兴全; 张晓芳; 赵毅; 唐鹏; 雷尚军
Original assignee: China France High Speed Railway Technology Xi'an Co ltd
Current assignee: China France High Speed Railway Technology Xi'an Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-02-05
Anticipated expiration: 2030-07-20

Abstract

The utility model provides a 25kV electrified railway contact net is with segmentation insulator, including two composite insulator and take the long slide of arc ignition angular gap, take the short slide of arc ignition angular gap, supplementary insulating slide, composite insulator's both ends are provided with the fixed anchor head respectively, and the front end of fixed anchor head is provided with the composite insulator connecting hole, and both sides limit is provided with the long slide stationary plane of taking the long slide of arc ignition angular gap and the short slide stationary plane of taking the arc ignition angular gap that has certain contained angle each other respectively, has the air gap that is greater than or equal to 310mm between the end of taking the long slide of arc ignition angular gap and taking the short slide of arc ignition angular gap, has the vertical overlap area of 80 + -5 mm and the horizontal span of 345 + -5 mm between two ends of taking the long slide of arc ignition angular gap, and composite insulator's creepage distance is not less than 1600 mm. The fixing anchor head of the sectional insulator is made of aluminum alloy castings, and the sectional insulator is compact in structure, light in weight, high in strength and strong in corrosion resistance.

Description

Sectional insulator for 25kV electrified railway contact net

Technical Field

The utility model belongs to the technical field of the rail transit, it relates to a segmentation insulator for 25kV electric railway connecting net specifically to say so.

Background

The section insulator is an important part in a suspension system of an electrified railway contact net. The function is to electrically segment the contact net without influencing the normal passing and current taking of the pantograph. In case break down among certain side contact net, perhaps when having a power failure because of the maintenance, alright disconnection section isolator department's isolator to realize section isolator both sides electrical isolation, effectively promoted contact net operation reliability and flexibility. Several kinds of non-slide formula section insulator of domestic generally used at present, although satisfy creepage distance 1600mm and air insulation clearance 300 mm's operation requirement, nevertheless have heavy, the structure is complicated, and overall stability is relatively poor, and on-the-spot installation and debugging step is loaded down with trivial details, in case the debugging is improper, forms the hard spot, very easily appears beating the bow phenomenon.

Disclosure of Invention

In order to overcome the not enough of existence among the prior art, the utility model provides a 25kV is section insulator for electronic railway connecting net.

The utility model discloses a realize through following technical scheme: a segmented insulator for 25kV electrified railway contact networks comprises two composite insulators arranged in parallel up and down, long slideways with arc ignition angular gaps, short slideways with arc ignition angular gaps and auxiliary insulating slideways, wherein the two sides of each composite insulator are staggered, fixed anchor heads are respectively arranged at two ends of each composite insulator, the composite insulators, the long slideways with arc ignition angular gaps and the short slideways with arc ignition angular gaps are all fixed on the fixed anchor heads, the lower end faces of the two long slideways with arc ignition angular gaps, the short slideways with arc ignition angular gaps and the auxiliary insulating slideways are in the same plane and protrude downwards from the lower edge of the lower composite insulator, the two ends of the auxiliary insulating slideways are parallel to the ends of the long slideways with arc ignition angular gaps and the short slideways with arc ignition angular gaps and are staggered to be not less than 85mm, and an air gap of not less than 310mm is formed between the ends of the long slideways with arc ignition angular gaps and the short slideways with arc ignition angular gaps, the end heads of the two long slideways with the arc ignition angular gaps are provided with a longitudinal overlapping area of 80 +/-5 mm and a transverse span of 345 +/-5 mm, and the creepage distance of the composite insulator is not less than 1600 mm.

In the above scheme, the front end of fixed anchor head is provided with two horizontally and parallel composite insulator connecting holes from top to bottom, the side of composite insulator connecting hole is provided with the insulator fixed orifices, the rear end of fixed anchor head is provided with the contact wire altitude mixture control screw of vertical direction, the both sides limit of fixed anchor head is provided with the long slide stationary plane of arc-leading angle gap of taking and takes the short slide stationary plane of arc-leading angle gap respectively that have certain contained angle each other, two stationary planes open from the back forward gradually, the both ends of stationary plane are provided with the slide fixed orifices respectively, the lower extreme of fixed anchor head still is provided with the U type slot through-hole of attach fitting fastener.

In the scheme, the fixing anchor head is made of a high-strength aluminum alloy material, and the surface of the fixing anchor head is subjected to micro-arc oxidation anticorrosion treatment.

In the scheme, the auxiliary insulating slide way is made of SMC composite insulating materials, the outer edge of the auxiliary insulating slide way is in a bow shape, and the inner side of the auxiliary insulating slide way is provided with three frame structures which are connected in a staggered mode.

The utility model relates to a 25kV electrified railway connecting net compares with prior art with sectional insulator, and its beneficial effect is:

1. the fixing anchor head of the sectional insulator is made of aluminum alloy castings, has compact structure, light weight, high strength and strong corrosion resistance, and meets the design and operation requirements of the high-speed electrified railway in structure and performance.

2. The composite insulator of the sectional insulator increases the section size of the core rod, improves the integral bearing capacity of the sectional insulator and meets the requirement of tensile breaking load of 94.5 kN.

3. The creepage distance of the sectional insulator is more than or equal to 1600mm, the long slide ways with arc striking angular gaps on the diagonal distribution zones on the two sides have a longitudinal overlapping area of 80 +/-5 mm, and smooth passing and continuous flow taking of the pantograph can be ensured.

Drawings

Fig. 1 is the utility model relates to a 25kV electrified railway connecting net is with sectional insulator's structure perspective.

Fig. 2 is a top view of fig. 1.

Figure 3 is a perspective view of the structure of the piece 2 of figure 1.

In the figure: 1. the composite insulator comprises a composite insulator, 2, a fixed anchor head I, 3, a fixed anchor head II, 4, a long slideway I with an arc ignition angular gap, 5, a long slideway II with an arc ignition angular gap, 6, a short slideway I with an arc ignition angular gap, 7, a short slideway II with an arc ignition angular gap, 8, an auxiliary insulating slideway I, 9, an auxiliary insulating slideway II, 10, a contact wire height adjusting screw hole, 11, an insulator fixing hole, 12, an upper composite insulator connecting hole, 13, a short slideway fixing surface with an arc ignition angular gap, 14, an insulator fixing hole, 15, a lower composite insulator connecting hole, 16, a long slideway fixing surface with an arc ignition angular gap, 17, a connecting joint wire clamp hole and 18, wherein the composite insulator is arranged on the composite insulator, the fixed insulator is fixed on the composite insulator, and the fixed.

Detailed Description

The utility model relates to a 25kV electrified railway connecting net is with section insulator is described with specific embodiment below with the accompanying drawings:

fig. 1 is a perspective view of the sectional insulator for a 25kV electrified railway contact network of the present invention, fig. 2 is a top view of fig. 1, and fig. 3 is a perspective view of the structure of the member 2 in fig. 1. In the figure, the sectional insulator for the 25kV electrified railway contact net comprises two composite insulators 1 which are arranged in parallel up and down, long slideways I4 with ignition angle gaps and long slideways II 5 with ignition angle gaps, short slideways I6 with ignition angle gaps and short slideways II 7 with ignition angle gaps, auxiliary insulating slideways I8 and auxiliary insulating slideways II 9 which are arranged on two sides of the composite insulators in a staggered manner, two ends of each composite insulator 1 are respectively provided with a fixed anchor head I2 and a fixed anchor head II 3, the long slideways I4 with ignition angle gaps and the short slideways I6 with ignition angle gaps are fixed on the fixed anchor heads I2, the long slideways II 5 with ignition angle gaps and the short slideways II 7 with ignition angle gaps are fixed on the fixed anchor heads II 3, the lower end faces of the two long slideways with ignition angle gaps, the short slideways with ignition angle gaps and the auxiliary insulating slideways are in the same plane and protrude downwards from the lower edge of the composite insulators, the two ends of the auxiliary insulating slide way II 9 are parallel to the end heads of the long slide way I4 with the arc ignition angle gap and the short slide way II 7 with the arc ignition angle gap, the two ends of the auxiliary insulating slide way I8 are parallel to the end heads of the long slide way II 5 with the arc ignition angle gap and the short slide way I6 with the arc ignition angle gap, the two ends of the auxiliary insulating slide way I8 are staggered with the end heads of the long slide way I5 with the arc ignition angle gap and the short slide way I6 with the arc ignition angle gap, the length of the two slide ways is not less than 80mm, an air gap with the arc ignition angle gap is formed between the end heads of the long slide way I4 with the arc ignition angle gap and the short slide way II 7 with the arc ignition angle gap, a longitudinal overlapping area with the arc ignition angle gap of 80 +/-5 mm and a transverse span with the arc ignition angle gap of 345 +/-5 mm are formed between the end heads of the long slide way I4 with the arc ignition angle gap and the short slide.

The fixed anchor head is made of high-strength aluminum alloy material, and the surface is subjected to micro-arc oxidation anti-corrosion treatment. The front end of the fixed anchor head is provided with two horizontal composite

insulator connecting holes

12 and 15 which are parallel up and down, the side edge of the composite insulator connecting hole is provided with

insulator fixing holes

11 and 14, the two end heads of the composite insulator are respectively inserted into the composite insulator connecting holes and are fixed by a fixing pin from the insulator fixing holes, the rear end of the fixed anchor head is provided with a contact line height adjusting screw hole 10 in the vertical direction, an adjusting bolt is arranged in the hole, the two side edges of the fixed anchor head are respectively provided with a long slideway fixing surface 16 with an arc-leading angle gap and a short slideway fixing surface 13 with an arc-leading angle gap, which have a certain included angle, the two fixing surfaces are gradually opened from back to front, the two ends of the fixing surfaces are respectively provided with a slideway fixing hole 18, the long slideway with the arc-leading angle gap and the short slideway with the arc-leading angle gap are respectively and correspondingly fixed on the slideway fixing surfaces by bolt nuts, the lower end of the, used for connecting the connector clip.

In order to improve the whole bearing capacity of the sectional insulator, the section diameter of the core rod of the composite insulator is set to be 26 mm. The auxiliary insulation slide way I8 and the auxiliary insulation slide way II 9 are made of SMC composite insulation materials, the outer edges of the auxiliary insulation slide way I8 and the auxiliary insulation slide way II 9 are in a bow shape, and the inner sides of the auxiliary insulation slide ways are provided with three frame structures which are connected in a staggered mode.

The composite insulator of the sectional insulator increases the section size of the core rod, improves the whole bearing capacity of the sectional insulator, has longitudinal overlapping areas of 80 +/-5 mm in the diagonal distribution strips and the arc ignition angular gap long slide ways at the two sides, and can ensure the smooth passing and continuous current taking of the pantograph.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with reference to the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make various changes or modifications equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, changes and modifications of the above embodiments by the technical spirit of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a 25kV electrified railway connecting net is with segmentation insulator, includes the crisscross long slide of taking the ignition angular gap, take the short slide of ignition angular gap, supplementary insulating slide that sets up in two upper and lower parallel arrangement's composite insulator and composite insulator's both sides, its characterized in that: the two ends of the composite insulator are respectively provided with a fixed anchor head, the composite insulator, the long slideway with the arc ignition angular gap and the short slideway with the arc ignition angular gap are all fixed on the fixed anchor heads, the lower end surfaces of the two long slideways with the arc ignition angular gaps, the short slideways with the arc ignition angular gaps and the auxiliary insulating slideways are in the same plane, and protrudes downwards from the lower edge of the lower composite insulator, the two ends of the auxiliary insulating slideway are parallel to the ends of the long slideway with the arc-striking angle gap and the short slideway with the arc-striking angle gap and are staggered with each other for a length of not less than 85mm, an air gap of more than or equal to 310mm is arranged between the end heads of the long slideway with the arc ignition angular gap and the short slideway with the arc ignition angular gap, the end heads of the two long slideways with the arc ignition angular gaps are provided with a longitudinal overlapping area of 80 +/-5 mm and a transverse span of 345 +/-5 mm, and the creepage distance of the composite insulator is not less than 1600 mm.

2. The sectional insulator for the 25kV electrified railway contact network of claim 1, characterized in that: the front end of the fixed anchor head is provided with two horizontal and up-down parallel composite insulator connecting holes, the side of the composite insulator connecting hole is provided with an insulator fixing hole, the rear end of the fixed anchor head is provided with a contact wire height adjusting screw hole in the vertical direction, two side edges of the fixed anchor head are respectively provided with a long slideway fixing surface with an arc-leading angle gap and a short slideway fixing surface with an arc-leading angle gap, which have a certain included angle, the two fixing surfaces are gradually opened from back to front, the two ends of the fixing surfaces are respectively provided with a slideway fixing hole, and the lower end of the fixed anchor head is also provided with a U-shaped groove through hole of a connecting joint wire clamp.

3. The sectionalized insulator for the 25kV electrified railway contact network is characterized in that: the fixed anchor head is made of high-strength aluminum alloy materials, and micro-arc oxidation anti-corrosion treatment is carried out on the surface of the fixed anchor head.

4. The sectional insulator for the 25kV electrified railway contact network of claim 1, characterized in that: the auxiliary insulating slide way is made of SMC composite insulating materials, the outer edge of the auxiliary insulating slide way is in a bow shape, and the inner side of the auxiliary insulating slide way is provided with three frame structures which are connected in a staggered mode.