CN211237763U - A high-performance metal sheath insulated flexible cable - Google Patents

Abstract

The utility model discloses a high performance metal sheath flexible cable that insulates, including cable body, outer protective housing, inner protective layer, flexible packing protective layer, electric wire parcel layer and bulletproof silk, the cable body outside is provided with outer protective housing, and the outer protective housing inboard is provided with the inner protective layer, and the inner protective layer inboard is provided with flexible packing protective layer, and flexible packing protective layer inboard is provided with electric wire parcel layer, and electric wire parcel layer center is provided with bulletproof silk, and electric wire parcel layer uses bulletproof silk to be provided with 4 electric wires as central symmetry. The utility model provides a pair of flexible cable of high performance metal sheath insulation can effectively prevent inside electric leakage through the inner protective layer that sets up, thereby prevents the inside corruption electric wire of outside steam infiltration cable simultaneously, and the shellproof silk that the flexible filling protective layer cooperation cable center that sets up of inside in addition can effectively promote the holistic buckling of cable and tensile strength, makes the cable softer, is convenient for adapt to the condition of laying in various districts.

Description

A high-performance metal sheath insulated flexible cable

technical field

The utility model relates to the field of cable protection structures, in particular to a high-performance metal sheath insulation flexible cable.

Background technique

The cable is usually a rope-like cable formed by twisting several or several groups of conductors [at least two in each group]. Each group of conductors is insulated from each other and often twisted around a center. insulating cover. Many are erected in the air or installed underground or underwater for telecommunication or power transmission.

A cable with application number CN 105336412 A, comprising a plurality of insulated wire cores, the insulated wire cores are twisted into a cable, each insulated wire core includes a conductor and an insulating layer, and the outer surface of the cable is extruded. An aluminum sleeve is pressed, and the twisting pitch of the insulated wire core is the same as that of the aluminum sleeve. By directly extruding an aluminum sleeve on the outside of the cable, on the one hand, the consumption of filling materials is reduced, on the other hand, the outer diameter of the aluminum sleeve itself is reduced, and the consumables are less. The contact between the sleeve and the cable core is changed by a linear arc surface, which is no longer isolated by the air, the heat dissipation effect is greatly improved, and its current carrying capacity is also enhanced. However, the aluminum sleeve design used in this product makes the entire cable too rigid, and it is impossible to achieve multiple laying methods in different areas. When the cable needs to be bent and laid many times, this kind of cable will be very unsuitable.

For the problems in the related technologies, no effective solutions have been proposed so far.

Utility model content

The purpose of the present invention is to provide a high-performance metal sheathed insulated flexible cable to solve the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a high-performance metal-sheathed insulated and flexible cable, comprising a cable body, an outer protective shell, an inner protective layer, a flexible filling protective layer, a wire wrapping layer and a bulletproof wire, so The outer protective shell is provided on the outermost side of the cable body, the inner protective layer is provided on the inner side of the outer protective shell, the flexible filling protective layer is provided on the inner side of the inner protective layer, and the flexible filling protective layer is provided on the inner side There is the wire wrapping layer, the bulletproof wire is arranged in the center of the wire wrapping layer, and four wires are symmetrically arranged with the bulletproof wire as the center of the wire wrapping layer.

Further, the inner protective layer includes an insulating layer and a waterproof layer, the waterproof layer is arranged on the inner side of the outer protective shell, and the insulating layer is arranged on the inner side of the waterproof layer.

Further, a plurality of flame retardant gaskets are arranged at the connection between the flexible filling protective layer and the inner protective layer, with the bulletproof wire as the center.

Further, the insulating layer is a mineral insulating material containing magnesium oxide, and the thickness of the insulating layer is 10 mm.

Further, the waterproof layer is a high-elastic rubber waterproof coating, and the thickness of the waterproof layer is 5 mm.

Further, the contact surfaces between the outer protective shell, the inner protective layer, the flexible filling protective layer and the adjacent layers of the wire wrapping layer are all provided with connecting threads.

Further, a plurality of bumps are arranged on the contact surfaces between the outer protective shell, the inner protective layer, the flexible filling protective layer and the adjacent layers of the wire wrapping layer.

Compared with the prior art, the utility model has the following beneficial effects:

(1) A high-performance metal-sheathed insulated flexible cable provided by the present utility model can effectively prevent internal leakage through the provided inner protective layer, and simultaneously prevent external water vapor from infiltrating the inside of the cable to corrode the wires. In addition, the internally provided flexible filling protection The bulletproof wire set in the center of the cable can effectively improve the overall bending and tensile strength of the cable, making the cable more flexible and easy to adapt to the laying conditions of various locations.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only of the present invention. For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic cross-sectional structure diagram of a high-performance metal-sheathed, insulated and flexible cable according to an embodiment of the present invention;

2 is a schematic diagram of a connecting thread structure of a high-performance metal sheathed insulated flexible cable according to an embodiment of the present invention;

3 is a schematic diagram of a cross-sectional structure of an inner protective layer of a high-performance metal-sheathed, insulated and flexible cable according to an embodiment of the present invention;

FIG. 4 is a partial enlarged schematic view of A in FIG. 2 .

Reference number:

1. Cable body; 2. Outer protective shell; 3. Inner protective layer; 4. Flame retardant gasket; 5. Flexible filling protective layer; 6. Wire wrapping layer; 7. Bulletproof wire; 8. Electric wire; 9. Insulation layer ; 10, waterproof layer; 11, connecting thread; 12, bump.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. For example, based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "rear", "middle part", "inside", The orientation or positional relationship indicated by "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or element. Must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indications Or imply relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

1-4, according to an embodiment of the present utility model. A high-performance metal sheath insulation flexible cable, including a cable body 1, an outer protective shell 2, an inner protective layer 3, a flexible filling protective layer 5, a wire wrapping layer 6 and bulletproof wire 7, the outer protective shell 2 is provided on the outermost side of the cable body 1, the inner protective layer 3 is provided on the inner side of the outer protective shell 2, and the inner protective layer 3 is provided on the inner side of the inner protective layer 3. The flexible filling protective layer 5 is provided with the wire wrapping layer 6 inside the flexible filling protective layer 5, and the bulletproof wire 7 is provided in the center of the wire wrapping layer 6, and the wire wrapping layer 6 is formed with the bulletproof wire 7 Four of the wires 8 are arranged symmetrically to the center.

Through the above solution of the present invention, the inner protective layer 3 includes an insulating layer 9 and a waterproof layer 10 , the waterproof layer 10 is arranged on the inner side of the outer protective shell 2 , and the insulating layer 9 is arranged on the waterproof layer 10 inside, so that the overall safety factor of the cable is greatly improved.

Through the above solution of the present invention, a plurality of flame-retardant gaskets 4 are arranged at the connection between the flexible filling protective layer 5 and the inner protective layer 3 with the bulletproof wire 7 as the center, which can cause spontaneous combustion of the cable due to excessive temperature. In the case of fire, block the internal or external flames to prevent the spread of the fire for the first time.

According to the above solution of the present invention, the insulating layer 9 is a mineral insulating material containing magnesium oxide, and the thickness of the insulating layer 9 is 10 mm to avoid cable leakage.

According to the above solution of the present invention, the waterproof layer 10 is a high-elastic rubber waterproof coating, and the thickness of the waterproof layer 10 is 5 mm, which can effectively prevent the outside water vapor from penetrating into the cable, thereby corroding the wire 8 .

Through the above solution of the present invention, the contact surfaces between the outer protective shell 2, the inner protective layer 3, the flexible filling protective layer 5 and the adjacent layers of the wire wrapping layer 6 are all provided with connecting threads 11 to increase the phase Adhesion between adjacent tie layers.

Through the above solution of the present invention, a plurality of bumps 12 are provided on the contact surfaces between the adjacent layers of the outer protective shell 2 , the inner protective layer 3 , the flexible filling protective layer 5 and the wire wrapping layer 6 , and further Increases adhesion between adjacent tie layers.

In specific applications, the inner protective layer 3 provided can effectively prevent internal leakage, and at the same time prevent external water vapor from penetrating into the cable to corrode the wires 8. In addition, the internally provided flexible filling protective layer 5 cooperates with the bulletproof wire 7 provided in the center of the cable, which can effectively Improve the overall bending and tensile strength of the cable, making the cable more flexible and easy to adapt to the laying conditions of various locations.

Finally, it should be noted that the above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a flexible cable of high performance metal sheath insulation, includes cable body (1), outer protective housing (2), inner protective layer (3), flexible packing protective layer (5), electric wire parcel layer (6) and shellproof silk (7), its characterized in that, cable body (1) outside is provided with outer protective housing (2), outer protective housing (2) inboard is provided with inner protective layer (3), inner protective layer (3) inboard is provided with flexible packing protective layer (5), flexible packing protective layer (5) inboard is provided with electric wire parcel layer (6), electric wire parcel layer (6) center is provided with shellproof silk (7), electric wire parcel layer (6) with shellproof silk (7) are provided with 4 for central symmetry electric wire (8).

2. The high-performance metal sheath insulated flexible cable according to claim 1, wherein the inner protective layer (3) comprises an insulating layer (9) and a waterproof layer (10), the waterproof layer (10) is disposed inside the outer protective shell (2), and the insulating layer (9) is disposed inside the waterproof layer (10).

3. A high performance metal sheath insulated flexible cable as claimed in claim 1, characterized in that the flexible filling protective layer (5) is provided with a plurality of flame retardant gaskets (4) at the junction of the inner protective layer (3) and the bulletproof wires (7) as the center.

4. A high performance metal-sheathed insulated flexible cable according to claim 2, characterized in that the insulating layer (9) has a thickness of 10 mm.

5. The high-performance metal sheath insulated flexible cable according to claim 2, wherein the waterproof layer (10) is a high-elastic rubber waterproof coating material, and the thickness of the waterproof layer (10) is 5 mm.

6. A high performance metal sheath insulated flexible cable as claimed in claim 1, characterized in that the contact surfaces between adjacent layers of the outer protective shell (2), inner protective layer (3), flexible filler protective layer (5) and the wire wrapping (6) are provided with engaging threads (11).

7. A high performance metal-sheathed insulated flexible cable according to claim 1, characterized in that a plurality of beads (12) are provided on the contact surface between adjacent layers of the outer protective casing (2), inner protective layer (3), flexible filler protective layer (5) and the wire coating (6).

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