CN217214249U

CN217214249U - High-performance fire-resistant cable

Info

Publication number: CN217214249U
Application number: CN202220292175.4U
Authority: CN
Inventors: 王明奎; 鲍继强; 李建华
Original assignee: GUANGDONG RIFENG ELECTRIC CABLE CO Ltd
Current assignee: GUANGDONG RIFENG ELECTRIC CABLE CO Ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-08-16
Anticipated expiration: 2032-02-10

Abstract

The utility model relates to a high performance fire resisting cable, include wear-resisting cover and be located a plurality of cable cores in the wear-resisting cover, wear-resisting cover has set gradually fire-resistant structure, waterproof layer, shielding layer and insulating layer from outer to interior, the enhancement core is located to the inside centre of wear-resisting cover, the cable core is located strengthen the outer circumference of core, the surface of cable core cup joints the position sleeve, the one end of position sleeve with strengthen the surface of core and contact, the other end of position sleeve with the inboard of insulating layer is connected, just the position sleeve with it has the elastomer to fill between the insulating layer. The utility model has the advantages that the cable has good fire resistance due to the arranged fire-resistant structure, and damage caused by overhigh contact temperature can be avoided; and meanwhile, the positioning sleeve is arranged in the wear-resistant sleeve to position the cable core, so that the influence on use caused by the random movement of the cable core in the use process is avoided.

Description

High-performance fire-resistant cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a high performance fire resisting cable.

Background

The cable is one of cables, and the cables are general names of optical cables, electric cables and the like. The cable has many applications, and is mainly used for controlling installation, connecting equipment, transmitting power and the like, and the installation needs special care because the cable is electrified. The main process of the wire and the cable is as follows: the three processes of drawing, stranding and coating are completed, the more complicated the model specification is, the higher the repeatability is.

Because the cable is electrified, when a fire disaster happens in some places, the protective layer on the outer layer of the cable can be burnt, and the situation that the cable core inside is short-circuited or even broken is caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem or at least partially solve the above technical problem, the present application provides a high performance fire resistant cable.

The application provides a high performance fire resisting cable, include wear-resisting cover and be located a plurality of cable cores in the wear-resisting cover, wear-resisting cover has set gradually fire-resistant structure, waterproof layer, shielding layer and insulating layer from outer to interior, strengthen the core in the middle of wear-resisting cover is inside, the cable core is located strengthen the outer circumference of core, the surface of cable core cup joints the position sleeve, the one end of position sleeve with strengthen the surface of core and contact, the other end of position sleeve with the inboard of insulating layer is connected, just the position sleeve with it has the elastomer to fill between the insulating layer.

Preferably, the locating sleeve comprises a sleeve body and a connecting strip, the sleeve body is provided with a cavity for accommodating the cable core, one end of the connecting strip is connected with one side of the sleeve body, the other end of the connecting strip is connected with the inner surface of the insulating layer, and the other side of the sleeve body is connected with the outer surface of the reinforcing core.

Preferably, the outer surface of the reinforced core is provided with an arc-shaped slot, and the outer surface of the sleeve body close to one side of the reinforced core is attached in the slot.

Preferably, the fire-resistant structure comprises an asbestos layer and a fire-resistant layer, the outer surface of the asbestos layer is connected with the inner surface of the wear-resistant sleeve, the inner surface of the asbestos layer is connected with the outer surface of the fire-resistant layer, and the inner surface of the fire-resistant layer is connected with the outer surface of the waterproof layer.

Preferably, the high performance fire resistant cable further comprises an elastic column located between the fire resistant structure and the waterproof layer.

Preferably, the width of the cross section of the elastic column gradually increases in a direction toward the reinforcing core.

Preferably, the outer surface of the wear sleeve is provided with outwardly extending projections.

Preferably, the outer surface of the wear-resistant sleeve is sprayed with an anticorrosive paint.

Preferably, the waterproof layer is made of a polyethylene material.

Preferably, the elastic object is an elastic insulating pad.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

the cable is divided into a multilayer structure from outside to inside, and the arrangement of the fireproof structure ensures that the cable has good fireproof performance and can avoid damage caused by overhigh contact temperature; meanwhile, the positioning sleeve is arranged in the wear-resistant sleeve to position the cable core, so that the influence on the use caused by the random movement of the cable core in the use process is avoided; meanwhile, elastic substances are filled between the positioning sleeve and the insulating layer, so that the cable has certain buffering effect when being externally extruded, and the cable core is effectively protected; the reinforcing core arranged in the middle of the wear-resistant sleeve can play a role in enhancing the strength of the cable.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

In the drawings:

fig. 1 is a schematic view of an embodiment of the high-performance fire-resistant cable of the present invention;

fig. 2 is a schematic view of another embodiment of the high-performance fire-resistant cable of the present invention;

FIG. 3 is a schematic view of a positioning sleeve in the high performance fire resistant cable of the present invention;

description of the drawings: 1. an insulating layer; 2. a shielding layer; 3. a waterproof layer; 4. a refractory structure; 41. a refractory layer; 42. an asbestos layer; 5. a wear-resistant sleeve; 6. a positioning sleeve 61 and a sleeve body; 62. a connecting strip; 7. an elastic article; 8. a bump; 9. an elastic column; 10. a reinforcing core; 11. a cable core;

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

As shown in fig. 1, in the utility model discloses a high performance fire resisting cable's first embodiment, this high performance fire resisting cable includes wear-resisting cover 5 and is located a plurality of cable cores 11 of wear-resisting cover 5, wear-resisting cover 5 has set gradually fire-resistant structure 4 to interior from outer, waterproof layer 3, shielding layer 2 and insulating layer 1, strengthen core 10 is located to the centre of wear-resisting cover 5 inside, cable core 11 is located the outer circumference of strengthening core 10, the surface cup joints position sleeve 6 of cable core 11, the one end of position sleeve 6 contacts with the surface of strengthening core 10, the other end of position sleeve 6 is connected with insulating layer 1's inboard, and be filled with elastic object 7 between position sleeve 6 and the insulating layer 1, elastic object 7 is the elastic insulation pad.

According to the technical scheme, the cable is divided into a multilayer structure from outside to inside, and the arranged fire-resistant structure 4 enables the cable to have good fire resistance, so that damage caused by overhigh contact temperature can be avoided; meanwhile, the positioning sleeve 6 is arranged in the wear-resistant sleeve 5 to position the cable core 11, so that the situation that the cable core 11 moves randomly in the using process to influence the use is avoided; meanwhile, the elastic substance 7 is filled between the positioning sleeve 6 and the insulating layer 1, so that when the cable is extruded from the outside, certain buffering is realized, and the cable core 11 is effectively protected; the reinforcing core 10 arranged in the middle of the wear-resistant sleeve 5 can play a role in enhancing the strength of the cable.

Referring to fig. 3, in one embodiment, the positioning sleeve 6 includes a sleeve body 61 and a connecting bar 62, the sleeve body 61 is provided with a cavity for accommodating the cable core 11, one end of the connecting bar 62 is connected to one side of the sleeve body 61, the other end of the connecting bar 62 is connected to the inner surface of the insulating layer 1, and the other side of the sleeve body 61 is connected to the outer surface of the reinforcing core 10. It should be noted that, the cable core 11 is covered by the cover body 61, and then the cover body 61 is connected between the reinforced core 10 and the insulating layer 1 by the connecting strip 62, so that the cable core 11 is positioned and fixed, and the use is prevented from being affected by the situation that the cable core 11 moves randomly in the using process.

In one embodiment, the outer surface of the core 10 is provided with an arc-shaped groove, and the outer surface of the sheath 61 near one side of the core 10 fits in the groove. It should be noted that, the arc-shaped groove is formed in the outer surface of the reinforced core 10, so that the outer surface of the sleeve body 61 is attached to the groove, the sleeve body 61 is fixedly connected with the reinforced core 10, and the cable core 11 is prevented from moving in the using process of the cable to affect normal use.

Referring to fig. 2, in one embodiment, the refractory structure 4 comprises an asbestos layer 42 and a refractory layer 41, the outer surface of the asbestos layer 42 being connected to the inner surface of the wear-resistant sleeve 5, the inner surface of the asbestos layer 42 being connected to the outer surface of the refractory layer 41, and the inner surface of the refractory layer 41 being connected to the outer surface of the waterproof layer 3.

In one embodiment, the high performance fire resistant cable further comprises a resilient column 9, the resilient column 9 being located between the fire resistant structure 4 and the waterproof layer 3, and the resilient column 9 having a cross-sectional width that gradually increases in a direction towards the reinforcing core 10. It should be noted that, when the cable is extruded from the outside, the elastic column 9 is extruded and compressed, and then the extrusion force is offset by the elastic force of the elastic column 9 itself, so as to play a role of buffering, and avoid the damage caused by the extrusion force directly acting on the cable core 11; meanwhile, the width of the cross section of the elastic column 9 is gradually increased along the direction of the reinforcing core 10, so that the contact surface of the elastic column 9 and the waterproof layer 3 is larger, and the buffering effect obtained by extrusion is better.

In one embodiment, the outer surface of the wear-resistant sleeve 5 is provided with the protrusion 8 extending outwards, so that the protrusion 8 contacts with the outside first when the cable is used, which not only plays a role in limiting the cable to move randomly, but also can avoid the damage of the cable caused by repeated friction.

In one embodiment, the outer surface of the wear-resistant sleeve 5 is coated with an anticorrosive paint, so that the risk of electric leakage caused by the exposed cable core 11 due to the damage of the cable when the cable contacts with corrosive substances can be effectively avoided.

In addition, since the polyethylene material has good waterproof performance, the waterproof layer 3 in the above embodiment is made of the polyethylene material, which can enhance the waterproof performance of the cable.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The utility model provides a high performance fire resisting cable, includes wear-resisting cover and is located a plurality of cable cores in the wear-resisting cover, its characterized in that, wear-resisting cover has set gradually fire-resistant structure, waterproof layer, shielding layer and insulating layer from outer to interior, the reinforcement core is located to the inside centre of wear-resisting cover, the cable core is located the outer circumference of reinforcement core, the surface of cable core cup joints the position sleeve, the one end of position sleeve with the surface of reinforcement core contacts, the other end of position sleeve with the inboard of insulating layer is connected, just the position sleeve with it has the elastomer to fill between the insulating layer.

2. The high-performance fire-resistant cable according to claim 1, wherein the positioning sleeve comprises a sleeve body and a connecting strip, the sleeve body is provided with a cavity for accommodating the cable core, one end of the connecting strip is connected with one side of the sleeve body, the other end of the connecting strip is connected with the inner surface of the insulating layer, and the other side of the sleeve body is connected with the outer surface of the reinforcing core.

3. The high performance fire resistant cable of claim 2, wherein the outer surface of the core is provided with an arcuate groove, and the outer surface of the jacket body on the side thereof adjacent to the core fits within the groove.

4. The high performance fire resistant cable of claim 1, wherein the fire resistant structure comprises an asbestos layer and a fire resistant layer, an outer surface of the asbestos layer being attached to an inner surface of the wear sleeve, an inner surface of the asbestos layer being attached to an outer surface of the fire resistant layer, an inner surface of the fire resistant layer being attached to an outer surface of the water resistant layer.

5. The high performance fire resistant cable of claim 1 further comprising a resilient post positioned between the fire resistant structure and the water barrier layer.

6. The high performance fire resistant cable of claim 5, wherein the cross-sectional width of the elastomeric post increases in a direction toward the strength member.

7. The high performance fire resistant cable of claim 1 wherein the outer surface of the wear sleeve is provided with outwardly extending projections.

8. The high performance fire resistant cable of claim 1 wherein the outer surface of the wear sleeve is sprayed with an anti-corrosive coating.

9. The high performance fire resistant cable of claim 1 wherein said water barrier layer is made of a polyethylene material.

10. The high performance fire resistant cable of claim 1 wherein said elastomer is an elastomeric insulating mat.