CN205595468U

CN205595468U - Preformed helical trapezoid cross section wire jumper strip that continues

Info

Publication number: CN205595468U
Application number: CN201620305127.9U
Authority: CN
Inventors: 林轶; 杨更才; 于波
Original assignee: LIAONING HAIAO SCIENCE & TECHNOLOGY Co Ltd
Current assignee: LIAONING HAIAO SCIENCE & TECHNOLOGY Co Ltd
Priority date: 2016-04-14
Filing date: 2016-04-14
Publication date: 2016-09-21
Anticipated expiration: 2026-04-14

Abstract

The utility model provides a preformed helical trapezoid cross section wire jumper strip that continues relates to high -pressure power transmission and distribution and electronic railway connecting net field. Preformed helical trapezoid cross section wire jumper strip that continues comprises trapezoid cross section wire braided multiunit preformed armor rods piece, and all preformed armor rods piece windings form and seal the pipe together, the inside silicon -aluminium alloy sand of spreading of preformed armor rods piece. The utility model discloses a preformed helical trapezoid cross section wire jumper strip that continues is used for aluminium conductors (cable) steel -reinforced, the aluminium package aluminium conductors (cable) steel -reinforced wire jumper department that continues, can provide bigger area of contact and sufficient current -carrying area, reduces contact resistance, improvement current -carrying ability. Preformed helical trapezoid cross section wire jumper strip that continues can be used to avoid not enough, the too high wire ablation problem that causes of contact resistance in wire jumper product area of contact.

Description

A kind of preformed trapezoid cross section jumper wire continuing bar

Technical field

This utility model relates to high pressure power transmission and distribution and electrification railway contact net field, particularly relates to a kind of jumper wire continuing preformed trapezoid cross section jumper wire continuing bar.

Background technology

Along with China's power transmission and distribution and the development of electric railway, more and more higher to the gold utensil performance requirement of fixing wire.The jumper wire continuing of wire is always insoluble problem.Either being conventionally used to the parallel groove clamp of jumper wire continuing or common preformed jumper wire continuing bar, all there is the contact resistance that contact area deficiency causes big, the place's temperature rise that continues is higher than wire temperature rise, and then the situation of burn wire.Parallel groove clamp is that cambered surface contacts with wire, but is limited to parallel groove clamp length, there will be the situation that contact area is not enough equally；Additionally, parallel groove clamp uses bolt to fix, Long-term Vibration or under waving state the mode of bolt fastening be susceptible to get loose, contact area can be reduced equally, increase contact resistance.Conventional preformed jumper wire continuing bar is linear contact lay with wire, is limited to the restriction of installation site and Financial cost, and conventional preformed jumper wire continuing bar can not unrestrictedly lengthen, and the most also can come in contact the resistance situation more than equal length conductor resistance.

Utility model content

This utility model provides a kind of preformed trapezoid cross section jumper wire continuing bar, excessive in order to improve existing jumper wire continuing means contact resistance, the situation of ablation wire.

For reaching above-mentioned purpose, on the one hand, this utility model provides a kind of preformed trapezoid cross section jumper wire continuing bar, and the described many groups preformed armor rods sheet worked out by tinsel by preformed trapezoid cross section jumper wire continuing bar forms, form closed circular tubulose and be enclosed in outside wire, the internal sanding of preformed armor rods sheet.

Further, described preformed trapezoid cross section jumper wire continuing bar material is aluminum-alloy wire.

Further, described aluminum-alloy wire tensile strength is 240～300MPa, conductivity >=40%IACS.

Further, the cross section of described aluminum-alloy wire is trapezoidal.

Further, paving silico-aluminum sand is surveyed in described preformed armor rods.

Further, silico-aluminum sand granular size is 30～100 mesh.

This utility model has the beneficial effect that:

The preformed trapezoid cross section jumper wire continuing bar of this utility model embodiment is fully contacted with wire, compared with parallel groove clamp and common preformed jumper wire continuing bar, having bigger contact area, less contact resistance, the place's temperature rise that can effectively prevent from continuing is too high and ablation wire.

Accompanying drawing explanation

Fig. 1 is this utility model embodiment raw material sectional schematic diagram；

Fig. 2 is the pre-formed rear single hank knotting change schematic diagram of this utility model embodiment；

Fig. 3 is hank knotting and wire envelope laminating situation schematic diagram after this utility model embodiment is arranged on wire；

Fig. 4 is after common preformed jumper wire continuing bar is arranged on wire and wire envelope laminating situation schematic diagram, is used for contrasting this utility model embodiment and installs effect；

Fig. 5 is this utility model embodiment mounted configuration schematic diagram；

Detailed description of the invention

Below in conjunction with accompanying drawing and embodiment, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, does not limit this utility model.

The preformed trapezoid cross section jumper wire continuing bar that this utility model embodiment relates to is a kind of electric line and contact nets in electrified railways pre-twisted line hardware, use at wire jumper wire continuing, can effectively reduce contact resistance, prevent the place of continuing too high due to temperature rise and the ablation breakdown of conducting wires that causes.

As it is shown in figure 1, metal preformed armor rods raw material material is aluminum-alloy wire, cross section is approximate trapezoid, and upper surface has slight bending radian, and lower surface is straight line, scratches workmen and wire during for preventing from constructing, and trapezoid cross section cusp does fillet and processes.Tensile strength of metal wire is 240～300MPa, conductivity >=40%IACS, this tensile strength is less than tradition pre-twisted line hardware aluminum-alloy wire, this is owing to mainly examining electricity function index at jumper wire continuing, less demanding to grip, therefore this utility model raw material suitably reduces tensile strength, improves conductivity, on the basis of meeting grip, improve raw-material electric conductivity.

As in figure 2 it is shown, preformed armor rods raw material is after pre-formed, short brink produces circular arc deformation, by controlling hank knotting specification and using suitable mould, this arc size can be controlled, so that preformed trapezoid cross section jumper wire continuing bar is fitted with wire, reach to increase the purpose of contact area.

As it is shown on figure 3, fit with wire envelope theory after preformed armor rods molding.

As shown in Figure 4, common preformed jumper wire continuing bar monofilament contacts situation with wire envelope, can be as the contrast with Fig. 3, it is evident that use trapezium structure to have bigger contact area than common round wires structure.In view of common preformed jumper wire continuing bar is substantially better than parallel groove clamp in terms of electric property, parallel groove clamp is not provided herein as comparing.

Situation after the preformed trapezoid cross section jumper wire continuing bar installation that this utility model embodiment relates to as shown in Figure 5, internal layer paving silico-aluminum sand.

As can be seen from the above-described embodiment, the preformed trapezoid cross section jumper wire continuing bar of this utility model embodiment has bigger contact area than current conventional jumper wire continuing gold utensil, less contact resistance, contact resistance is significantly lower than isometric conductive contact resistance, the place's temperature rise that is not result in continuing is higher than wire temperature rise, and then wire will not be occurred to cross the phenomenon of ablation due to temperature rise.

Obviously, those skilled in the art can carry out various change and modification without deviating from spirit and scope of the present utility model to this utility model.So, if these amendments of the present utility model and modification belong within the scope of this utility model claim and equivalent technologies thereof, then this utility model is also intended to comprise these change and modification.

Claims

1. a preformed trapezoid cross section jumper wire continuing bar, it is characterised in that many groups preformed armor rods sheet that described preformed trapezoid cross section jumper wire continuing bar is worked out by tinsel forms, and preformed armor rods sheet becomes closed circular tubulose to be enclosed in outside wire, the internal sanding of preformed armor rods sheet.

Preformed trapezoid cross section the most as claimed in claim 1 jumper wire continuing bar, it is characterised in that described preformed trapezoid cross section jumper wire continuing bar material is aluminum-alloy wire.

Preformed trapezoid cross section the most as claimed in claim 2 jumper wire continuing bar, it is characterised in that described aluminum-alloy wire tensile strength is 240～300MPa, conductivity >=40%IACS.

Preformed trapezoid cross section the most as claimed in claim 2 jumper wire continuing bar, it is characterised in that the cross section of aluminum-alloy wire is trapezoidal.

Preformed trapezoid cross section the most as claimed in claim 1 jumper wire continuing bar, it is characterised in that survey paving silico-aluminum sand in preformed armor rods.

Preformed trapezoid cross section the most as claimed in claim 4 jumper wire continuing bar, it is characterised in that silico-aluminum sand granular size is 30～100 mesh.