CN216719578U

CN216719578U - Fire-resistant flame-retardant low-voltage cable

Info

Publication number: CN216719578U
Application number: CN202123331102.6U
Authority: CN
Inventors: 祝继勇; 秦逍; 师凤竹
Original assignee: Jiangsu Pengrun Cable Technology Co ltd
Current assignee: Jiangsu Pengrun Cable Technology Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-06-10
Anticipated expiration: 2031-12-27

Abstract

The utility model relates to a fire-resistant flame-retardant low-voltage cable which comprises a cable body, wherein the cable body comprises a wire core, a filling layer, a tape layer and a sheath layer which are sequentially arranged from inside to outside, an outer fireproof assembly is arranged outside the sheath layer and comprises a first fireproof layer, a second fireproof layer and a surface protection layer, the first fireproof layer is positioned on the outer surface of the sheath layer, the second fireproof layer is positioned on the outer surface of the first fireproof layer, the surface protection layer is arranged on the outer surface of the second fireproof layer, the first fireproof layer and the second fireproof layer are both fireproof material layers, the surface protection layer is a polyvinyl chloride material layer, the first fireproof layer is glass fiber fireproof cloth, and the sheath layer is completely wrapped and covered by the first fireproof layer. The low-voltage cable provided by the utility model has the advantage of preventing the low-voltage cable from being burnt and damaged by open fire.

Description

Fire-resistant flame-retardant low-voltage cable

Technical Field

The utility model relates to the technical field of cables, in particular to a fire-resistant flame-retardant low-voltage cable.

Background

A cable is a conductor used to transmit power or signal current, signal voltage. The cable can be divided into a high-voltage cable and a low-voltage cable according to voltage. Compared with low-voltage overhead lines and low-voltage overhead insulated lines, low-voltage cable lines are more difficult to lay and maintain, but have the characteristics of reliable operation, no pole standing, no influence on the appearance and the like, so that the low-voltage cable lines are widely applied to low-voltage power distribution systems.

Due to the particularity of the cable, fire prevention is of great importance for the cable, and although the low-voltage cable in the prior art is provided with the sheath layer, the low-voltage cable still cannot be well protected in the case of open fire, so that the risk of fire is caused.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects in the prior art, the utility model provides a fire-resistant flame-retardant low-voltage cable, which aims to solve the problem that the low-voltage cable in the prior art is easy to burn to cause fire when exposed to fire.

(II) technical scheme

In order to realize the purpose, the technical scheme of the utility model is as follows:

the utility model provides a fire-resistant fire-retardant low tension cable, includes the cable body, the cable body includes sinle silk, filling layer, tie layer and the restrictive coating that sets gradually from inside to outside, the restrictive coating is provided with outer fire prevention subassembly outward, outer fire prevention subassembly includes first flame retardant coating, second flame retardant coating and surface inoxidizing coating, first flame retardant coating is located the restrictive coating surface, the second flame retardant coating is located the surface of first flame retardant coating, the surface inoxidizing coating sets up the surface at the second flame retardant coating, first flame retardant coating is the fire resistive material layer with the second flame retardant coating, the surface inoxidizing coating is the polyvinyl chloride material layer.

Furthermore, first flame retardant coating is glass fiber fireproof cloth, first flame retardant coating wraps up the restrictive coating completely and covers.

Further, the second flame retardant coating is asbestos cloth, the second flame retardant coating wraps up first flame retardant coating completely and covers.

Further, the inside fire prevention subassembly that is provided with of cable body, interior fire prevention subassembly includes third fire prevention layer and fourth fire prevention layer, the setting of third fire prevention layer is at the internal surface of tie layer, the setting of fourth fire prevention layer is at the surface of sinle silk, third fire prevention layer and fourth fire prevention layer are the asbestos cloth.

Furthermore, the outer surface of the surface protective layer is provided with a fireproof coating layer.

(III) advantageous technical effects

In summary, the utility model has the following beneficial technical effects:

1. according to the low-voltage cable, the outer fireproof assembly is arranged outside the sheath layer and comprises the first fireproof layer, the second fireproof layer and the surface protective layer, the first fireproof layer is located on the outer surface of the sheath layer, the second fireproof layer is located on the outer surface of the first fireproof layer, the surface protective layer is arranged on the outer surface of the second fireproof layer, the first fireproof layer and the second fireproof layer are both fireproof material layers, and the surface protective layer is a polyvinyl chloride material layer, so that when open fire exists nearby the low-voltage cable, the first fireproof layer and the second fireproof layer can perform good fireproof protection on the outer portion of the cable body, the flame is prevented from contacting with the cable body, and the cable body is prevented from being burnt and damaged by the flame, and therefore the low-voltage cable has the advantage that the low-voltage cable can be prevented from being burnt and damaged by the open fire;

2. the first fireproof layer is made of glass fiber fireproof cloth which has excellent characteristics of high temperature resistance, electric insulation, oxidation resistance and the like, so that the first fireproof layer has a stable and reliable fireproof effect and can effectively protect the cable body from fire;

3. the second fireproof layer is made of asbestos cloth which has excellent fireproof, heat-resistant and acid-base corrosion resistant performances, so that the second fireproof layer also has stable and reliable fireproof effects, and the second fireproof layer can provide double fireproof protection for the cable body by matching with the first fireproof layer, so that the fireproof and flame-retardant effects of the low-voltage cable are further improved;

4. due to the fact that the inner fireproof assembly is arranged inside the cable body and comprises the third fireproof layer and the fourth fireproof layer, the third fireproof layer is arranged on the inner surface of the binding belt layer, the fourth fireproof layer is arranged on the outer surface of the cable core, and the third fireproof layer and the fourth fireproof layer are asbestos cloth layers;

5. because the surface of surface inoxidizing coating is provided with fireproof paint layer, fireproof paint layer can improve the fire prevention effect of surface inoxidizing coating to improve the holistic fire prevention heat-resisting effect of low tension cable.

Drawings

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 that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a cross-sectional view of a fire resistant and flame retardant low voltage cable according to an embodiment;

description of reference numerals:

in the figure, 1, a cable body; 2. a wire core; 21. a conductor; 22. an insulating layer; 3. a filling layer; 4. binding a belt layer; 5. a sheath layer; 6. an outer fire protection component; 61. a first fire resistant layer; 62. a second fire-resistant layer; 63. a surface protective layer; 7. an inner fire protection component; 71. a third fire prevention layer; 72. and a fourth fire-proof layer.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example (b):

referring to fig. 1, the utility model discloses a fire-resistant and flame-retardant low-voltage cable, which comprises a cable body 1. Cable body 1 includes sinle silk 2, filling layer 3, ribbon layer 4 and restrictive coating 5 that set gradually from inside to outside. The wire core 2 includes a conductor 21 and an insulating layer 22 disposed outside the conductor 21, and in this embodiment, three wire cores 2 are disposed.

An outer fireproof component 6 is arranged outside the sheath layer 5, and the outer fireproof component 6 comprises a first fireproof layer 61, a second fireproof layer 62 and a surface protection layer 63. The first fire-proof layer 61 is arranged on the outer surface of the sheath layer 5, the second fire-proof layer 62 is arranged on the outer surface of the first fire-proof layer 61, and the surface protection layer 63 is arranged on the outer surface of the second fire-proof layer 62. First flame retardant coating 61 and second flame retardant coating 62 are the fire proof material layer for play the thermal-insulated effect of fire prevention. The surface protection layer 63 is a polyvinyl chloride material layer for binding protection of the first fire-retardant layer 61 and the second fire-retardant layer 62.

Through the above setting, when there is open fire near low-voltage cable, first flame retardant coating 61 and second flame retardant coating 62 can carry out fine fire protection to cable body 1's outside, avoid flame and cable body 1 contact to avoid flame to damage cable body 1 burning.

Further, the first fireproof layer 61 is glass fiber fireproof cloth, and the sheath layer 5 is completely wrapped and covered by the first fireproof layer 61. Glass fiber fire prevention cloth has good characteristics such as high temperature resistant, electrical insulation, anti-oxidant, consequently first flame retardant coating 61 has reliable and stable fire prevention effect, can carry out effectual fire protection to cable body 1.

Further, second flame retardant coating 62 is the asbestos cloth, and second flame retardant coating 62 wraps up first flame retardant coating 61 completely and covers. Asbestos cloth has fabulous fire prevention heat-resisting, acid and alkali corrosion resistance ability, therefore second flame retardant coating 62 also has reliable and stable's fire prevention effect, and second flame retardant coating 62 cooperates first flame retardant coating 61 can provide dual fire prevention protection for cable body 1 to further improve low tension cable's fire-resistant flame retardant efficiency.

Further, the surface of the surface protection layer 63 is provided with a fireproof coating layer (not shown in the figure), and the fireproof coating layer can improve the fireproof effect of the surface protection layer 63, so that the overall fireproof and heat-resistant effect of the low-voltage cable is improved.

Besides, the cable body 1 is provided with an inner fireproof component 7 inside, and the inner fireproof component 7 comprises a third fireproof layer 71 and a fourth fireproof layer 72. Third fire prevention layer 71 sets up the internal surface at ribbon layer 4, and third fire prevention layer 71 wraps up the covering with the filling layer 3 is complete, and fourth fire prevention layer 72 sets up the surface at sinle silk 2, and fourth fire prevention layer 72 wraps up the covering with the insulating layer 22 of sinle silk 2 completely, and third fire prevention layer 71 and fourth fire prevention layer 72 are the asbestos cloth.

Through the setting, when outer fire prevention subassembly 6 was destroyed by exogenic action, interior fire prevention subassembly 7 still can protect sinle silk 2, and certain fire prevention effect can be played with fourth fire prevention layer 72 homoenergetic to third fire prevention layer 71, prevents flame to sinle silk 2 burning, realizes the protection to cable body 1 inner structure.

The working principle of the embodiment is as follows: in the embodiment, as the outer fireproof component 6 is arranged outside the sheath layer 5, the outer fireproof component 6 comprises a first fireproof layer 61, a second fireproof layer 62 and a surface protection layer 63, the first fireproof layer 61 is arranged on the outer surface of the sheath layer 5, the second fireproof layer 62 is arranged on the outer surface of the first fireproof layer 61, the surface protection layer 63 is arranged on the outer surface of the second fireproof layer 62, the first fireproof layer 61 and the second fireproof layer 62 are both fireproof material layers, the surface protection layer 63 is a polyvinyl chloride material layer, therefore, when open fire exists near the low-voltage cable, the first fireproof layer 61 and the second fireproof layer 62 can perform good fireproof protection on the exterior of the cable body 1, prevent flame from contacting with the cable body 1, thereby avoid flame to burn the damage with cable body 1, to sum up, the low tension cable that this embodiment provided has can prevent self by naked light burning damage, safe and stable reliable's advantage.

It should be understood that the above examples are only for clarity of illustration 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 therefrom are within the scope of the utility model.

Claims

1. The utility model provides a fire-resistant fire-retardant low tension cable, includes cable body (1), cable body (1) is including sinle silk (2), filling layer (3), band layer (4) and restrictive coating (5) that set gradually from inside to outside, its characterized in that: sheath layer (5) are provided with outer fire prevention subassembly (6) outward, outer fire prevention subassembly (6) are including first flame retardant coating (61), second flame retardant coating (62) and surface inoxidizing coating (63), first flame retardant coating (61) are located sheath layer (5) surface, second flame retardant coating (62) are located the surface of first flame retardant coating (61), surface inoxidizing coating (63) set up the surface at second flame retardant coating (62), first flame retardant coating (61) are the flame retardant material layer with second flame retardant coating (62), surface inoxidizing coating (63) are the polyvinyl chloride material layer.

2. The fire-resistant flame-retardant low-voltage cable according to claim 1, wherein: the first fireproof layer (61) is glass fiber fireproof cloth, and the sheath layer (5) is completely wrapped and covered by the first fireproof layer (61).

3. The fire-resistant flame-retardant low-voltage cable according to claim 2, wherein: second flame retardant coating (62) are the asbestos cloth, second flame retardant coating (62) wrap up first flame retardant coating (61) completely and cover.

4. The fire-resistant flame-retardant low-voltage cable according to claim 3, wherein: fireproof component (7) in cable body (1) inside is provided with, interior fireproof component (7) include third fire prevention layer (71) and fourth fire prevention layer (72), third fire prevention layer (71) sets up the internal surface at tie layer (4), fourth fire prevention layer (72) set up the surface at sinle silk (2), third fire prevention layer (71) and fourth fire prevention layer (72) are the asbestos cloth.

5. The fire-resistant flame-retardant low-voltage cable according to claim 1, wherein: and a fireproof coating layer is arranged on the outer surface of the surface protective layer (63).