CN112002456A

CN112002456A - Cable with improved structure

Info

Publication number: CN112002456A
Application number: CN202010418689.5A
Authority: CN
Inventors: 卢松松; 陈志文; 李秀苓; 闫通海; 卢广为
Original assignee: Dexin Cable Group Co ltd
Current assignee: Dexin Cable Group Co ltd
Priority date: 2020-04-07
Filing date: 2020-05-18
Publication date: 2020-11-27
Anticipated expiration: 2040-05-18
Also published as: CN112002456B; CN112002486A; CN112002486B

Abstract

The invention discloses a cable, wherein the components of a conductor of the cable comprise: magnesium, copper, zinc, lanthanum and cerium, and the balance of aluminum, wherein the total content of other impurities is not more than 0.2%, and the content of single impurity component is not more than 0.05%. The cable comprises a plurality of conductors, an inner shielding layer is coated outside the conductors, an insulating layer is coated outside the inner shielding layer, support bars are arranged at the symmetrical centers of the conductors, arc-shaped grooves are formed in the support bars, and the conductors coated with the inner shielding layer and the insulating layer are positioned in the grooves; the outer surface of the supporting bar is coated with an outer shielding layer. According to the cable, a small amount of rare earth metal elements lanthanum and cerium are added into the metal conductor of the cable, so that the resistivity of the conductor is effectively reduced, and the conductivity of the metal conductor of the cable can be improved; through the setting of support bar, at the outer shielding layer of the surface cladding of support bar simultaneously, can support and keep apart the sinle silk, can effectively reduce the electromagnetic interference between the sinle silk, improve the structural stability of cable.

Description

Cable with improved structure

Technical Field

The invention relates to the technical field of cables, in particular to a cable.

Background

Cable is a generic term for optical cables, electrical cables, and the like. The cable has many applications, is mainly used for controlling installation, connecting equipment, transmitting power, transmitting information and the like, and is a common and indispensable object in daily life. The cable is mainly formed by twisting PVC plastic particles into a cable, processing sheath insulation and conductive metal wire cores of various specifications.

For a long time, in the cable industry, copper is always the leading position of cable cores due to its excellent electric conduction and heat transfer performance, but due to shortage of copper resources and high-speed increase of demand, the price of copper is greatly increased, so that the copper consumption market is always seeking a suitable substitute, aluminum and aluminum alloy have similar functions with copper in the aspects of electric conduction and heat transfer, and the like, and the aluminum and aluminum alloy are determined to be main substitute materials of copper, but due to the limitation of the resistivity of the aluminum and aluminum alloy, the electric conduction performance of the aluminum and aluminum alloy cores is not ideal.

According to the cable, a small amount of rare earth metal elements lanthanum and cerium are added into the metal conductor of the cable, so that the resistivity of the wire core is effectively reduced, and the conductivity of the metal conductor of the cable is further improved.

Disclosure of Invention

The main object of the present invention is to provide a cable, which can effectively solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a conductor of a cable, the composition of the conductor comprising: 4.8 to 6.8 percent of magnesium, 5.6 to 8.6 percent of copper, 2.8 to 4.8 percent of zinc, 0.05 to 0.5 percent of lanthanum, 0.05 to 0.5 percent of cerium, the balance of aluminum, the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

Preferably, the composition of the conductor comprises: 5.0 to 5.5 percent of magnesium, 6.0 to 7.0 percent of copper, 3.0 to 3.5 percent of zinc, 0.1 to 0.2 percent of lanthanum, 0.1 to 0.2 percent of cerium, the balance of aluminum, the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

Preferably, the composition of the conductor comprises: 5.6 to 6.0 percent of magnesium, 7.1 to 8.0 percent of copper, 3.6 to 4.0 percent of zinc, 0.3 to 0.4 percent of lanthanum, 0.3 to 0.4 percent of cerium, the balance of aluminum, the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

The utility model provides a cable, includes many foretell conductors, the outside cladding of conductor has the internal shield layer, the outside cladding of internal shield layer has the insulating layer, and the outside cladding of many claddings has the conductor of internal shield layer and insulating layer has around the covering, it has the filler to fill between covering and the insulating layer around the covering, the outside cladding of covering has the isolation layer, the outside cladding of isolation layer has the inner sheath.

Preferably, the outer part of the inner sheath is sleeved with an outer sheath every 2-10 meters.

Preferably, a plurality of convex strips are symmetrically distributed on the outer surface of the inner sheath, a plurality of clamping grooves are symmetrically distributed on the inner wall of the outer sheath, and the clamping grooves are matched with the convex strips.

Preferably, many the conductor is central symmetry and distributes, many the centre of symmetry department of conductor is provided with the support bar, seted up curved recess on the support bar, the conductor that the cladding has internal shield layer and insulating layer is located the recess.

Preferably, the outer surface of the supporting bar is coated with an outer shielding layer, and the tail end of the supporting bar is abutted to the inner wall of the wrapping layer.

Preferably, the support strip is helical.

Compared with the prior art, the invention has the following beneficial effects:

1) according to the cable, a small amount of rare earth metal elements lanthanum and cerium are added into the metal conductor of the cable, so that the resistivity of the conductor is effectively reduced, and the conductivity of the metal conductor of the cable can be improved.

2) Through the setting of support bar, at the outer shielding layer of the surface cladding of support bar simultaneously, can support and keep apart the sinle silk, can effectively reduce the electromagnetic interference between the sinle silk, improve the structural stability of cable.

3) Through the setting of sand grip, can increase the bulk strength of inner sheath, be favorable to guaranteeing the protective effect of inner sheath.

4) Through the setting of oversheath, when the certain department inner sheath in the cable leads to the inner sheath damaged because of exogenic action such as friction, can remove the oversheath on the cable to damaged department along the sand grip, play the guard action to damaged department.

Drawings

FIG. 1 is an external schematic view of a cable according to the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic view of an outer jacket of a cable according to the present invention;

fig. 5 is a cross-sectional view of a support strip of a cable according to the present invention.

In the figure: 1. a conductor; 2. an inner shield layer; 3. an insulating layer; 4. a supporting strip; 5. a groove; 6. a filler; 7. wrapping a covering; 8. an isolation layer; 9. an inner sheath; 10. a convex strip; 11. an outer sheath; 12. a card slot; 13. and an outer shielding layer.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example 1

A conductor 1 of a cable, the composition of the conductor 1 comprising: 4.8 percent of magnesium, 5.6 percent of copper, 2.8 percent of zinc, 0.05 percent of lanthanum, 0.05 percent of cerium, the balance of aluminum, the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

Example 2

The composition of the conductor 1 includes: 5.5 percent of magnesium, 7.0 percent of copper, 3.5 percent of zinc, 0.1 percent of lanthanum, 0.1 percent of cerium, the balance of aluminum, the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

Example 3

The composition of the conductor 1 includes: 6.0 percent of magnesium, 8.0 percent of copper, 4.0 percent of zinc, 0.3 percent of lanthanum, 0.3 percent of cerium, the balance of aluminum, the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

Example 4

The composition of the conductor 1 includes: 6.8 percent of magnesium, 8.6 percent of copper, 4.8 percent of zinc, 0.5 percent of lanthanum, 0.5 percent of cerium, the balance of aluminum, the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

Comparative example 1

The composition of the conductor 1 includes: 4.8 percent of magnesium, 5.6 percent of copper, 2.8 percent of zinc and the balance of aluminum, wherein the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

And (3) experimental test: the conductors 1 prepared in examples 1 to 4 and comparative example 1 were each tested for resistivity at 20 c, and the results are shown in the following table.

TABLE 1 resistivity (. rho./10) at 20 ℃ temperature for examples 1-4 and comparative example 1^-8Ω·m)

	Example 1	Example 2	Example 3	Example 4	Comparative example 1
						ρ	2.9002	2.8738	2.8670	2.8510	3.0129

As can be seen from table 1, the resistivity of the conductor 1 is significantly reduced by adding a small amount of the rare earth elements lanthanum and cerium, which indicates that the addition of a small amount of the rare earth elements lanthanum and cerium has a significant improvement effect on the conductivity of the conductor 1.

Example 5

Referring to fig. 1-5, a cable, including many above-mentioned embodiments conductor 1, the outside cladding of conductor 1 has internal shield layer 2, and internal shield layer 2 chooses for use but not limited to weaving the copper ribbon, the outside cladding of internal shield layer 2 has insulating layer 3, and conductor 1, internal shield layer 2 and insulating layer 3 constitute the sinle silk of cable, and the outside cladding of many conductors 1 that have internal shield layer 2 and insulating layer 3 has around covering 7, it has filler 6 to fill between covering 7 and insulating layer 3, the outside cladding of covering 7 has isolation layer 8, the outside cladding of isolation layer 8 has inner sheath 9. The isolation layer 8 is selected from but not limited to a polyester film isolation layer, the isolation layer is selected from but not limited to a polyethylene isolation layer, and the inner sheath 9 and the outer sheath 11 are made of but not limited to polyvinyl chloride.

Referring to fig. 1, the outer part of the inner sheath 9 is sleeved with an outer sheath 11 every 2-10 meters.

By adopting the technical scheme, the conductor 1 added with a small amount of rare earth metal elements lanthanum and cerium is adopted, so that the resistivity of the conductor 1 is effectively reduced, and the conductivity of the cable metal conductor 1 can be improved.

Through the arrangement of the outer sheath 11, when the inner sheath 9 at a certain position in the cable is damaged due to external force action such as friction, the outer sheath 11 on the cable can be moved to the damaged position along the convex strip 10 to protect the damaged position, and meanwhile, the two ends of the outer sheath 11 can be sealed and fixed by adopting insulating tapes; for the mode that current only adopt insulating tape to carry out the winding protection to damaged department, utilize oversheath 11 to protect, its protective effect is better, can effectively protect the inside sinle silk of damaged department.

Referring to fig. 2 to 4, a plurality of convex strips 10 are symmetrically distributed on the outer surface of the inner sheath 9, a plurality of clamping grooves 12 are symmetrically distributed on the inner wall of the outer sheath 11, and the clamping grooves 12 are matched with the convex strips 10.

Through adopting above-mentioned technical scheme, through the setting of sand grip 10, can increase the bulk strength of inner sheath 9, be favorable to guaranteeing the safeguard effect of inner sheath 9. The convex strip 10 is matched with the clamping groove 12 on the outer sheath 11, and can play a role in clamping the outer sheath 11.

Referring to fig. 2-3 and 5, the conductors 1 are distributed in a central symmetrical manner, and the centers of symmetry of the conductors 1 are provided with support bars 4, the support bars 4 are provided with arc-shaped grooves 5, and the conductors 1 coated with inner shielding layers 2 and insulating layers 3 are located in the grooves 5.

Referring to fig. 2, 3 and 5, the outer surface of the supporting bar 4 is coated with an outer shielding layer 13, the outer shielding layer 13 is selected from but not limited to a braided copper wire band, and the tail end of the supporting bar 4 is abutted to the inner wall of the wrapping layer 7. The support strip 4 is spiral, and the support strip 4 is a rubber strip.

Through adopting above-mentioned technical scheme, through the setting of support bar 4, at the outer shielding layer 13 of surface cladding of support bar 4 simultaneously, can support and keep apart the sinle silk, can effectively reduce the electromagnetic interference between the sinle silk, improve the structural stability of cable.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.

Claims

1. A conductor of a cable, characterized in that the composition of the conductor (1) comprises: 4.8 to 6.8 percent of magnesium, 5.6 to 8.6 percent of copper, 2.8 to 4.8 percent of zinc, 0.05 to 0.5 percent of lanthanum, 0.05 to 0.5 percent of cerium, the balance of aluminum, the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

2. The conductor of claim 1, wherein: the composition of the conductor (1) comprises: 5.0 to 5.5 percent of magnesium, 6.0 to 7.0 percent of copper, 3.0 to 3.5 percent of zinc, 0.1 to 0.2 percent of lanthanum, 0.1 to 0.2 percent of cerium, the balance of aluminum, the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

3. The conductor of claim 1, wherein: the composition of the conductor (1) comprises: 5.6 to 6.0 percent of magnesium, 7.1 to 8.0 percent of copper, 3.6 to 4.0 percent of zinc, 0.3 to 0.4 percent of lanthanum, 0.3 to 0.4 percent of cerium, the balance of aluminum, the total content of other impurities is not more than 0.2 percent, and the content of single impurity component is not more than 0.05 percent.

4. A cable, characterized by, including many the conductor (1) of any one of claims 1-3, the outside cladding of conductor (1) has internal shield layer (2), the outside cladding of internal shield layer (2) has insulating layer (3), and the outside cladding of many conductor (1) that have internal shield layer (2) and insulating layer (3) has around covering (7), it has filler (6) to fill between covering (7) and insulating layer (3), there is isolation layer (8) around the outside cladding of covering (7), the outside cladding of isolation layer (8) has inner sheath (9).

5. The cable according to claim 4, characterized in that: an outer sheath (11) is sleeved outside the inner sheath (9) every 2-10 meters.

6. The cable of claim 5, wherein: a plurality of convex strips (10) are symmetrically distributed on the outer surface of the inner sheath (9), a plurality of clamping grooves (12) are symmetrically distributed on the inner wall of the outer sheath (11), and the clamping grooves (12) are matched with the convex strips (10).

7. The cable according to claim 4, characterized in that: many conductor (1) is central symmetry and distributes, many the centre of symmetry department of conductor (1) is provided with support bar (4), curved recess (5) have been seted up on support bar (4), and conductor (1) that the cladding has internal shield layer (2) and insulating layer (3) is located recess (5).

8. The cable of claim 7, wherein: the outer surface of support bar (4) is gone up the cladding and is had outer shielding layer (13), the end of support bar (4) offsets with the inner wall around covering (7).

9. The cable of claim 7, wherein: the supporting strip (4) is spiral.