CN1534691A

CN1534691A - Armoured premade multi core branching cable

Info

Publication number: CN1534691A
Application number: CNA031087884A
Authority: CN
Inventors: 武阚; 阚武
Original assignee: JIUCHUAN ELECTRIC APPLICANCE CO Ltd
Current assignee: JIUCHUAN ELECTRIC APPLICANCE CO Ltd
Priority date: 2003-03-30
Filing date: 2003-03-30
Publication date: 2004-10-06

Abstract

A prebranched armoured multi-core cable is composed of the core consisting of multiple shielded conductors for trunk cable, the core consisting of multiple shielded conductors for branch cables, branch connector, jointer for branch, armour layer for trunk cable and armour layer for branch cable. It is made through soldering connection and injection moulding.

Description

Armored prefabricated multicore branch cable

Affiliated technical field

The invention belongs to the armoured power cable field.

Background technology

The multi-core power cable of existing prefabricated branch comes out in the known technology, but all is to make prefabricated branch joint on general, common multi-core power cable.In the armoured power cable field, still there is not the armoured power cable of prefabricated branch joint at present.This be because: no matter be individual layer guiding principle silk, double-layer wire, individual layer steel band, double-deck guiding principle band, still other forms of armoured power cable will guarantee that all its armour does not have integrality disconnected, that decrease.So armoured power cable is made relatively difficulty of prefabricated branch cable.Yet, with common polyvinyl chloride insulation, pvc sheath; The prefabricated branch cable that the power cable of crosslinked polyetylene insulated, pvc sheath is made, under a lot of specific occasions or design drawing require to use in the environment of armoured power cable and all can't use.

Summary of the invention

The objective of the invention is to:

Solve the problem that armoured power cable can not prefabricated branch joint, make prefabricated branch cable under specific occasions or design drawing require to use in the environment of armoured power cable and can be applied.

Realize that method of the present invention is:

Press determined concrete branch, joint location on the construction design drawing,, on the professional production streamline, make of special production mould therefor and equipment of armoured power cable specification, model, the cross section of defined on the drawing.The first step is pressed on the drawing on determined concrete branch, the joint location, with restrictive coating, armour, the insulating barrier of armoured power cable cut off one by one, strip off; Second step was pressed regulation crimping, the injection moulding of phase place separately with branch, the joint of armoured power cable; Armour (individual layer steel wire, double-layer wire, individual layer steel band, double-deck steel band or other armoring materials) with main cable and branch cable connects fully again; The last outer protective sleeve injection moulding of carrying out branch connected body place again, seal moulding.

The invention has the advantages that:

1. pay all branches and joint that the on-the-spot whole piece armoured power cable that uses of unit in charge of construction will need, prefabricated finishing in specialized factory;

2. site operation equipment is reduced; Specification requirement reduces; Expense declines to a great extent; Time shortens in a large number;

3. guaranteed the integrality and the continuity of armour, comprised that the armour of branch cable is all as a whole with the armour connection reliably of main cable.

Good effect of the present invention is:

1. the armoured power cable that puts into operation all is being greatly enhanced aspect electrical characteristic, dielectric strength, watertightness, air-tightness, reliability, the consistency;

2. make armoured power cable under normal circumstances the operation troubles rate descend significantly, reach non-maintaining, highly reliable running status.

3. especially use at anti-interference, the anti-width of cloth and penetrate armoured power cable under the occasion, the real connection of the armour protective layer of main cable and the armour protective layer of branch cable is a whole property.Behind the armour protective layer reliable ground, improve whole anti-interference, the anti-width of cloth of whole system greatly and penetrate ability.

Description of drawings

Now, the present invention is done detailed explanation with the embodiment of accompanying drawing.

Fig. 1 is an armored prefabricated multicore branch cable general shape schematic diagram;

Fig. 2 is an armored prefabricated multicore branch cable internal structure schematic diagram;

Fig. 3 is that inner each the phase individual branches internal structure A-A of armored prefabricated multicore branch cable is to enlarged diagram;

Fig. 4 is that armored prefabricated multicore branch cable B1-B1 is to generalized section;

Fig. 5 is that armored prefabricated multicore branch cable B2-B2 is to generalized section;

Fig. 6 is that armored prefabricated multicore branch cable B3-B3 is to the amplification profile schematic diagram.

Among the figure: 1 is the overall external form of armored prefabricated multicore branch cable; 2 is the main body of armored prefabricated multicore branch cable----armouring multicore main cable; 3 is armouring main cable outer layer insulation sheath; 4 is armouring branch multicore cable; 5 is the outer layer insulation sheath of armouring branch cable; 6 is the overall outer layer insulation sheath of multicore branch union body; 7,8,9,10,11 is branch's connected body independently separately on each A, B, C, N, the PE line; 17, insulating barrier independently separately on inner A, B of 18,19,20,21 multi-core branch cables, C, N, the PE line; 22 is the leader cable conductor core wire; 23 is the branch joint connector; 24 is the branch cable conductor core wire; Armour after the inner connection of 25 branch's connected bodies; 26 is the armour of main cable; 27 is the armour of branch cable.

Specific implementation method

Now elaborate with accompanying drawing 2:

By specification, model, the cross section of the designed armouring multi-core power cable of design department, and on the respective length of defined position on the design drawing, the first step is cut the outer layer insulation sheath 3 of trunk armoured cable 2, peel off the sheath of respective length; Second step was cut off armour 26, divided and shelled two ends; The 3rd step was independently cut the primary insulation separately 12,13,14,15,16 of shelling respective length on the relevant position of insulated conductor separately at the armouring multicore cable again.Cut the leader cable primary insulation at 12,13,14,15,16 o'clock, and it is also noted that the creepage distance that keeps between each phase conductor, promptly the mutual dislocation after the primary insulation injection process is apart from S.So far, whole armouring main cable is cut, is shelled workshop section work and finishes.

Press armouring branch cable specification, model, the cross section of defined on the design drawing again, cut the outer layer insulation sheath 5 of stripping suitable length at its position, termination; With armour 27 minutes, the position of shelling restrictive coating 5; (it is three during three cores: A, B, C three-phase with many then; Four-core is to be four: A, B, C, N phase; Five cores are to be five: A, B, C, N, PE phase) according to the phase place colour code identical with leader cable, make in order peel off primary insulation after, the relevant position length of exposing the leader cable conductor core wire, cut redundance, peel off the multi-core branch cable

primary insulation

17,18,19,20,21 of respective length again.

Again with the conductor core wire 24 of each branch cable,, snap into separately on the leader cable heart yearn 22 according to phase place colour code separately.Be 02207758.8U type branch joint connector 23 with the number of patent application for preparing shaping again, on particular manufacturing craft, special equipment, professional production line,, and it is reached and keep designing institute required pressure and intensity U type connector 23 and leader cable conductor core wire 22 and the 24 crimping moulding of branch cable conductor core wire.

Finish through after the assay was approved in above-mentioned every work, can enter next bar special production line, with the primary insulation injection moulding of each phase branch connected body of precast multicored cable, seal shaping, be encapsulated in each mutually independently on the branch joint with special equipment and particular manufacturing craft with 7,8,9,10,11.

Finish through after the assay was approved in above-mentioned every work, can enter next bar special production line.To assign to the armour 26 at two ends after cutting off in the main cable and the armour 27 of branch cable is made in order, sealed; By special equipment armour 25 and main cable armour 26, the branch cable armour 27 at the branch connected body place of increase are connected and be welded as a whole again.

Through after the assay was approved, can change next bar professional production line over to.With special equipment and particular manufacturing craft overall outer layer insulation sheath 6 injection mouldings of armouring multicore branch connected body are sealed, check, dispatched from the factory.

So far, armored prefabricated multicore branch cable on the professional production line, is finished with production equipment special and particular manufacturing craft production.

Implementing best mode of the present invention is at the professional production line, produces with special equipment and particular manufacturing craft.

Claims

1. armored prefabricated branch cable, form by parts such as main cable 2, branch cable 4, connector 23, main cable armour 26, branch cable armour 27 and branch's connected body armours 25, it is characterized in that: main cable armour 26, branch cable armour 27 are to be welded into an integral body by branch's connected body armour 25.

2. a kind of armored prefabricated multicore branch cable according to claim 1 is characterized in that: divide connected body the 7,8,9,10, the 11st, seal moulding in the independent separately injection moulding after connector 23 compression mouldings of leader cable 22, branch cable 24.

3. a kind of armored prefabricated multicore branch cable according to claim 1 is characterized in that: branch's connected body 7,8,9,10,11 that each phase place is independently sealed after the moulding separately keeps enough dislocation apart from S each other.

4. a kind of armored prefabricated multicore branch cable according to claim 1 is characterized in that: the integral solder of armour 25,26,27 is to seal the laggard row of moulding in each phase branch connected body 7,8,9,10,11 injection moulding.

5. a kind of armored prefabricated multicore branch cable according to claim 1 is characterized in that: overall outer layer insulation sheath 6 is after armour 25,26,27 integral solder are finished, and totally seals injection mo(u)lding again.