CN212230120U - Low-smoke halogen-free environment-friendly cable - Google Patents

Abstract

The utility model relates to a low smoke and zero halogen environmental protection cable, include: an inner layer and an outer layer; the inner layer sequentially comprises a conductor, an insulating layer and a shaping layer from inside to outside; the outer layer sequentially comprises a protective layer and an outer sheath from inside to outside; a plurality of lightening grooves are formed in the outer side of the protective layer along the length direction of the protective layer, and a connecting piece used for connecting the protective layer and the shaping layer is arranged between the protective layer and the shaping layer. The utility model discloses have the effect that lightens cable weight, make things convenient for cable transportation and lay.

Description

Low-smoke halogen-free environment-friendly cable

Technical Field

The utility model belongs to the technical field of the technique of cable and specifically relates to a low smoke and zero halogen environmental protection cable is related to.

Background

At present, with the rapid development of national economy, cables are widely applied to various power stations, such as nuclear power stations, thermal power stations, etc., and various fields, such as subway stations, power plants, high-rise buildings, military facilities, oil platforms, etc., so that the requirements of people on the quality and functions of the cables are higher and higher.

Now, a Chinese patent with a publication number of CN204720201U is searched for and discloses a cable; the cable comprises a central cable and a plurality of inner cables, wherein each inner cable comprises a conductor which comprises a plurality of twisted metal wires with the diameter of 0.4mm-0.6 mm; the periphery of the conductor is covered with a first semiconductor shielding layer.

The above prior art solutions have the following drawbacks: the cable disclosed above is internally solid, so that the cable is heavy and not easy to transport, and when being installed, the cable is heavy and not easy to lay.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a low smoke and zero halogen environmental protection cable has the advantage that lightens cable weight, makes things convenient for cable transportation and laying.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a low-smoke halogen-free environment-friendly cable comprises an inner layer and an outer layer;

the inner layer sequentially comprises a conductor, an insulating layer and a shaping layer from inside to outside;

the outer layer sequentially comprises a protective layer and an outer sheath from inside to outside;

the outside of inoxidizing coating has seted up a plurality of heavy grooves that subtract along its length direction, the inoxidizing coating with be equipped with between the design layer and be used for connecting the inoxidizing coating with the connecting piece on design layer.

Through adopting above-mentioned technical scheme, in the cable use, the conductor in the inlayer is electrically conductive, the skin protects the inlayer, it is in the same place to advance firm the connection with the inoxidizing coating through the connecting piece, thereby the wholeness of cable has been strengthened, wherein the outside of inoxidizing coating is owing to seted up a plurality of heavy grooves that subtract, it reduces the weight of inoxidizing coating to subtract heavy groove, thereby the weight of cable has been alleviateed to this a large extent, including the inoxidizing coating cladding of rethread oversheath, the basic form of cable has been maintained, and including protecting the inoxidizing coating, the inoxidizing coating has been protected, because the weight of cable is reduced by a wide margin, thereby the.

The utility model discloses can further configure to in a preferred example, it is the arc setting to subtract the cross-section in groove, and is a plurality of subtract the even circumference distribution in groove and be in the week side of inoxidizing coating.

By adopting the technical scheme, the arc-shaped weight reduction groove can conveniently reduce the weight of the protective sleeve to the maximum extent, and when the cable is extruded, the weight reduction groove can be conveniently unfolded towards the groove walls on the two sides of the cable, so that the inner layer of the cable is protected.

The present invention may be further configured in a preferred example such that the plurality of weight reduction grooves are formed in the protective layer in the length direction at regular intervals.

By adopting the technical scheme, the weight reduction grooves in the length direction of the protective layer are arranged at intervals, the groove walls at the end parts of the weight reduction grooves support the outer sheath, and the outer sheath is not easy to deform and is sunken into the weight reduction grooves, so that the external shape of the cable is maintained conveniently.

The present invention can be further configured in a preferred example, wherein the bottom of the weight reduction groove is provided with a plurality of extension grooves.

Through adopting above-mentioned technical scheme, the setting of extension groove has further alleviateed the weight of inoxidizing coating, has made things convenient for the transportation and the laying of cable, when buckling the cable, the inoxidizing coating deformation takes place this moment, subtracts that the groove is extruded and contract or open towards the width direction's that subtracts the groove both sides, and the extension groove is by tensile or compressive deformation this moment, has assisted through the extension groove and has subtract the groove and take place deformation to reduce the possibility of losing when subtracting the groove deformation, improved the barrier propterty of inoxidizing coating to the inlayer.

The utility model discloses can further configure to in a preferred example, the conductor is equipped with three, three the outside of conductor all is equipped with insulating layer, three the mutual spiral winding of conductor sets up.

Through adopting above-mentioned technical scheme, three conductors have improved the electric conductive property of cable, and three conductors spiral winding is in the same place for three conductors' an organic whole is better, and difficult not hard up and damage between the conductor.

The utility model discloses can further configure to in a preferred example, the insulating layer with be equipped with the filling layer between the design layer.

Through adopting above-mentioned technical scheme, the filling layer is filled the clearance between with the conductor, insulating layer and the clearance between the design layer to improve the wholeness of inlayer, the inlayer of cable is difficult not hard up, conveniently protects the inlayer.

The utility model discloses can further configure to in a preferred example, the connecting piece is a plurality of connecting rods, and is a plurality of connecting rod evenly distributed is in the week side on design layer, it is a plurality of the length direction of connecting rod all with the radial direction on design layer is unanimous, the outside on design layer is fixed to connecting rod one end, and the other end is inserted and is established extremely in the protective layer.

Through adopting above-mentioned technical scheme, because the one end of connecting rod is inserted and is established in the protective layer to inoxidizing coating and connecting rod are firmly fixed, with this under the effect of a plurality of connecting rods, the design layer is difficult for separately with the inoxidizing coating, and the design layer is difficult for relative and inoxidizing coating relative motion, has improved the wholeness between design layer and the inoxidizing coating, has improved the barrier propterty of inoxidizing coating to the design layer, has prolonged the life of cable.

The present invention may be further configured in a preferred example, wherein the outer sheath is covered with a metal mesh.

Through adopting above-mentioned technical scheme, the structural strength of oversheath has been strengthened to the metal mesh, and has maintained the deformability of oversheath.

To sum up, the utility model discloses a following beneficial technological effect:

1. the weight of the cable is greatly reduced due to the arrangement of the weight reduction grooves, so that the cable is convenient to transport and lay;

2. when the cable is extruded, the weight reduction grooves are arranged, so that the groove walls on the two opposite sides of the weight reduction grooves are relatively far away from the expansion to complete the deformation of the protective layer, and the inner layer is not easily extruded when the protective layer is deformed, so that the basic structure of the inner layer is maintained, the protection performance of the cable is improved, and the service life of the cable is prolonged;

3. a plurality of connecting rods link together design layer and inoxidizing coating to when the inoxidizing coating takes place deformation, the inoxidizing coating is difficult for breaking away from the design layer, with difficult production clearance between this inlayer and the skin, has made things convenient for the skin to protect the inlayer.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of the side of the middle protective cover of the present invention.

Reference numerals: 1. an inner layer; 2. an outer layer; 3. a conductor; 4. an insulating layer; 5. a shaping layer; 6. a protective layer; 7. an outer sheath; 8. a weight reduction groove; 9. an extension groove; 10. a filling layer; 11. a connecting rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a low smoke and zero halogen environmental protection cable, including inlayer 1 and skin 2.

Referring to fig. 1, an inner layer 1 includes a conductor 3, an insulating layer 4, and a setting layer 5 in this order from inside to outside. The conductors 3 are three, and the conductors 3 are formed by winding and weaving a plurality of strands of copper wires. The outside of three conductors 3 all is wrapped with insulating layer 4, and insulating layer 4 is the rubber material, three conductors 3 mutual spiral winding setting. The conducting capacity of the cable is completed by three conductors 3.

Referring to fig. 1, the sizing layer 5 is made of a mica tape, which is disposed outside the three-strand conductor 3 and is used to reduce the possibility of relative movement of the three-strand conductor 3. A gap is left between the inner side of the sizing layer 5 and the conductor 3, and a filling layer 10 is arranged between the sizing layer 5 and the insulating layer 4. The filling layer 10 is made of rock wool particles. The filler layer 10 fills the gap between the sizing layer 5 and the insulating layer 4, thereby improving the integrity of the inner layer 1, while the rock wool material improves the fire resistance of the cable. The shaping layer 5 is not easy to indent and damage the insulating layer 4 and even the conductor 3 due to the action of the filling layer 10.

Referring to fig. 1, the outer layer 2 includes a protective layer 6 and an outer sheath 7 in sequence from inside to outside.

Referring to fig. 1, the protective layer 6 is made of cross-linked polyethylene, which has elastic deformation capability. And a connecting piece for connecting the protective layer 6 and the sizing layer 5 is arranged between the protective layer 6 and the sizing layer 5. The connecting piece is a plurality of connecting rods 11, and a plurality of connecting rods 11 evenly distributed are in the week side of design layer 5, and the length direction of a plurality of connecting rods 11 all is unanimous with the radial direction on design layer 5. One end of the connecting rod 11 is integrally formed on the outer side of the shaping layer 5, and the other end of the connecting rod is inserted into and adhered to the protective layer 6. Fix inoxidizing coating 6 and design layer 5 together through connecting rod 11 to inoxidizing coating 6 be difficult for and design 5 between produce clearance and relative motion, made things convenient for inoxidizing coating 6 to design 5 and protected.

Referring to fig. 1 and 2, a plurality of lightening grooves 8 are formed in the outer side of the protective layer 6 along the length direction of the protective layer, and the sections of the lightening grooves 8 are arranged in an arc shape. A plurality of lightening grooves 8 are uniformly and circumferentially distributed on the periphery of the protective layer 6, and 5 lightening grooves 8 are arranged in the section of the protective layer 6. A plurality of weight-reducing grooves 8 are uniformly arranged at intervals along the length direction of the protective layer 6, and the distance between adjacent weight-reducing grooves 8 arranged along the length direction of the protective layer 6 is 10-15 cm. The weight of the protective layer 6 is reduced by the weight reduction groove 8, so that the weight of the cable is reduced, and the cable is convenient to transport and lay. When the cable receives the extrusion, subtract the relative both sides cell wall in groove 8 and keep away from relatively this moment to make things convenient for inoxidizing coating 6 to take place deformation, make inoxidizing coating 6 be difficult for extrudeing inner layer 1 of cable, improved barrier propterty.

Referring to fig. 1 and 2, a plurality of extension grooves 9 are formed at the bottom of the weight reduction groove 8, and the plurality of extension grooves 9 improve the roughness of the bottom of the weight reduction groove 8, so that the weight reduction groove 8 is more easily deformed when the cable is extruded.

Referring to fig. 1, the outer sheath 7 is mainly made of rubber, and a metal mesh (not shown) is embedded in the outer sheath, and the metal mesh is made of copper with good ductility. The outer sheath 7 covers the outer side of the protective layer 6, and the protective layer 6 is protected by the outer sheath 7. When the cable is compressed, the jacket 7 is supported by the groove walls at the ends of the lightening grooves 8, so that the jacket 7 is not easily recessed into the lightening grooves 8.

The implementation principle of the embodiment is as follows:

during use of the cable, the conductors 3 in the inner layer 1 conduct electricity. Outer 2 protects inlayer 1, advances firm the connection together with design layer 5 and inoxidizing coating 6 through connecting rod 11 to the wholeness of cable has been strengthened. The outer side of the protective layer 6 is provided with a plurality of weight reducing grooves 8, and the weight of the protective layer 6 is reduced by the weight reducing grooves 8, so that the weight of the cable is greatly reduced. Meanwhile, when the cable is extruded, the wall of the two opposite side walls of the weight reduction groove 8 are relatively far away, so that the protective layer 6 is convenient to deform, the protective layer 6 is not easy to extrude the inner layer 1 of the cable, and the protective performance is improved. The protective layer 6 is covered in the outer sheath 7, so that the basic shape of the cable is maintained, and the protective layer 6 is protected in the outer sheath to protect the protective layer 6. The weight of the cable is greatly reduced, thereby facilitating the transportation and laying of the cable.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. A low smoke zero halogen environmental protection cable which is characterized in that: an inner layer (1) and an outer layer (2);

the inner layer (1) sequentially comprises a conductor (3), an insulating layer (4) and a shaping layer (5) from inside to outside;

the outer layer (2) sequentially comprises a protective layer (6) and an outer sheath (7) from inside to outside;

a plurality of heavy grooves (8) of subtracting have been seted up along its length direction in the outside of inoxidizing coating (6), inoxidizing coating (6) with it is used for connecting to be equipped with between shaping layer (5) inoxidizing coating (6) with the connecting piece of shaping layer (5).

2. The low-smoke zero-halogen environment-friendly cable according to claim 1, wherein the cross section of the lightening grooves (8) is arc-shaped, and a plurality of lightening grooves (8) are uniformly and circumferentially distributed on the periphery of the protective layer (6).

3. The low smoke zero halogen environmental protection cable of claim 2, characterized in that a plurality of said lightening slots (8) arranged along the length direction of said protective layer (6) are arranged at even intervals.

4. The low-smoke zero-halogen environment-friendly cable as claimed in claim 3, wherein the bottom of the weight-reducing groove (8) is provided with a plurality of extending grooves (9).

5. The low-smoke zero-halogen environment-friendly cable according to claim 1, characterized in that the number of the conductors (3) is three, the insulation layers (4) are arranged outside the three conductors (3), and the three conductors (3) are spirally wound with each other.

6. A low smoke zero halogen environmental protection cable according to claim 5, characterized in that, be equipped with filling layer (10) between insulating layer (4) and shaping layer (5).

7. A low smoke zero halogen environmental protection cable according to claim 1, characterized in that, the connecting piece is a plurality of connecting rods (11), and is a plurality of connecting rod (11) evenly distributed in the week side of stereotyped layer (5), it is a plurality of the length direction of connecting rod (11) all with the radial direction on stereotyped layer (5) is unanimous, connecting rod (11) one end is fixed in the outside of stereotyped layer (5), and the other end is inserted and is established to in inoxidizing coating (6).

8. A low smoke zero halogen environmental protection cable according to claim 1, characterized in that said outer sheath (7) is wrapped with metal mesh.

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