CN202230758U

CN202230758U - Frequency conversion cable

Info

Publication number: CN202230758U
Application number: CN201120379986XU
Authority: CN
Inventors: 吴鸣良; 孙曙光
Original assignee: JIANGSU ZHONGCHAO CABLE Corp
Current assignee: JIANGSU ZHONGCHAO HOLDING CO., LTD.
Priority date: 2011-10-09
Filing date: 2011-10-09
Publication date: 2012-05-23
Anticipated expiration: 2021-10-09

Abstract

The utility model discloses a frequency conversion cable. The utility model solves technical problems for providing the frequency conversion cable having a simple structure, simple procedures and a small outer diameter. In order to solve the above technical problems, the utility model adopts the below technical scheme. The frequency conversion cable includes conductor copper wires. The conductor copper wires are distributed concentrically. Insulation layers coat among the conductor copper wires concentrically, and an outer protection layer coat on an outer ring of the copper wires. Compared with the prior art, the frequency conversion cable in the utility model has conductors distributed concentrically. The insulation layers are shared by every two neighboring phases of the conductors. No gap is in the cable. The production procedure is simple. The outer diameter of the cable is small. The production cost can be reduced effectively and the economic effect can be improved.

Description

Frequency-changing cable

Technical field

The utility model relates to a kind of frequency-changing cable.

Background technology

Typical case's frequency-changing cable generally adopts the 3+3 structure, and promptly three master cores are split as three little cores formation three-phase symmetrical cable structures with zero line, can effectively reduce electromagnetic interference, and in order to shield other interference, also screen need be arranged.This structure complex manufacturing, operation is many, and the outside diameter of cable is bigger, because cable uses the 3+3 structure, the cable stranding need use the 1+6 cabler, and general cable enterprise does not have this equipment.

Summary of the invention

The technical problem that the utility model will solve provides a kind of simple in structure, operation is few, the outside diameter of cable is little frequency-changing cable.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of frequency-changing cable, comprise the conductor copper wire, and said conductor copper wire concentric type distributes, and is coated with insulating barrier between the conductor copper wire with one heart, and the outer ring is coated with outer jacket.

The said conductor copper wire of the utility model is circular.

The said conductor copper wire of the utility model is a flat.

The utility model compared with prior art, the conductor of cable is concentric type and distributes, insulating barrier is that two phase conductors are shared, cable does not have the gap, production process is few, the outside diameter of cable is little, can effectively reduce production costs, and increases economic efficiency.

Description of drawings

Fig. 1 is the frequency-changing cable structural representation of prior art.

Fig. 2 is the structural representation of the utility model embodiment one.

Fig. 3 is the structural representation of the utility model embodiment two.

Embodiment

Below in conjunction with accompanying drawing the utility model is done further explain.

As shown in Figure 1, typical frequency-changing cable structure comprises conductor 1, inner insulating layer 2, packed layer 3, lapping layer 4, screen 5 and external protection 6.The cable core three-phase that cable is made up of three conductors 1 and inner insulating layer 2 is symmetrically distributed, and makes cable profile rounding in the cable core space with packed layers 3 such as Split Down province or polypropylene tear-straps.Do not scatter when making the cable core stranding; Also to cable core be encased and form lapping layer 4 with nonwoven fabrics or other band; Disturb frequency-changing cable in order to reduce other signals; Also need be outside cable core wrapped or form screen 5 with copper wire, aluminum-alloy wire braiding with sheet metal strips such as copper strips or aluminium-plastic tapes, the external protection 6 of layer of protecting cable core also will be arranged outside screen.This structural manufacturing process is complicated, and operation is many, and the outside diameter of cable is bigger, because cable adopts the 3+3 structure, the cable stranding need use the 1+6 cabler, and general cable enterprise does not have this equipment.

Fig. 2, Fig. 3 are the frequency-changing cable structure chart of the utility model concentric structure, and frequency-changing cable comprises conductor copper wire 7, and conductor copper wire 7 concentric types distribute, and are coated with insulating barrier 8 between the conductor copper wire 7 with one heart, and the outer ring is coated with outer jacket 9.Compare with typical frequency-changing cable structure, the conductor of cable is concentric type and distributes, and it is shared that insulating barrier is two phase conductors; Cable does not have the gap, does not need packed layer, owing to do not need stranding; Therefore also do not have lapping layer, copper wire has formed shielding construction for closely being arranged in outside the whole cable core in the outermost layer zero line conductor; Therefore also do not need screen, this structure supply and demand is simple, and operation is few; The outside diameter of cable is little, and the outside diameter of cable littler like needs can change the round conductor among the embodiment one into the flat conductor among the embodiment two; Press structure thereby form, the conductor copper wire 7 of each layer circle changes flat conductor copper wire 10 into, under the identical situation of total cross section, can further reduce the outside diameter of cable.

The frequency-changing cable of the utility model adopts concentric structure; The center is a phase conductor; Conductor is outward an insulating barrier, and copper wire is closely wrapped outside insulating barrier, and insulating barrier is as the shared insulating barrier of two phase conductors; Extruded insulation layer outside closely wrapped copper wire, tight wrapped copper wire is as the third phase conductor outside this insulating barrier.Extruded insulation layer outside the third phase conductor, tight wrapped copper wire is as the zero line of frequency-changing cable outside insulating barrier.This structure frequency-changing cable is a centrosymmetric structure, can effectively reduce electromagnetic interference, and because concentric layer is closely to arrange, has formed screen, therefore can be used in outer field concentric structure and replace screen.This cable and typical frequency-changing cable relatively do not have the stranding operation, do not need to fill, and do not need screen, and the outside diameter of cable are also little than typical frequency-changing cable external diameter yet, and all characteristic index of not only economical with materials cost, and frequency-changing cable can both reach.

Claims

1. a frequency-changing cable comprises conductor copper wire (7), it is characterized in that: said conductor copper wire (7) concentric type distributes, and is coated with insulating barrier (8) between the conductor copper wire (7) with one heart, and the outer ring is coated with outer jacket (9).

2. frequency-changing cable according to claim 1 is characterized in that: said conductor copper wire (7) is for circular.

3. frequency-changing cable according to claim 1 is characterized in that: said conductor copper wire (7) is a flat.