CN221079675U - Cable protective sleeve with fireproof structure - Google Patents

Abstract

The utility model relates to a cable protection sleeve with a fireproof structure, which comprises a cable body, wherein the cable body comprises conductors, an inner protection sleeve and an outer protection sleeve, the inner protection sleeve is arranged in the outer protection sleeve, a fireproof filling layer is arranged between the outer protection sleeve and the inner protection sleeve, heat insulation filling layers are fixedly arranged in the inner protection sleeve, and the number of the conductors is seven. This cable protective sheath with fire-proof structure, through set up the fire prevention filling layer between outer protective sheath and interior protective sheath, the fire prevention filling layer is the glass fiber knitting, and glass fiber has higher high temperature resistance, has higher fusing point and heat resistance, and when the glass fiber knitting suffered the flame, it can not burn, and the insulating filling layer is the mineral substance filler simultaneously, can produce the insulating layer when the conflagration takes place to play the effect of protection to the conductor, improve cable body's fire behavior good, difficult messenger's conductor is impaired when taking place the conflagration.

Description

Cable protective sleeve with fireproof structure

Technical Field

The utility model relates to the technical field of cables, in particular to a cable protective sleeve with a fireproof structure.

Background

A cable is a combination of wires for transmitting power or signals, consisting of one or more insulated wires, which are typically encased in a protective layer of insulating material, and is typically used to transmit power or signals from one place to another, for example in a building to a different room, or in the telecommunications field to transmit telephone, internet and television signals.

The current cable is easily influenced by external environment in the use process, and the insulation layer of the cable can be burnt or damaged due to the high temperature continuously generated when a fire accident happens, so that the normal transmission of electric power is influenced, the signal transmission is interrupted, the fireproof performance of the cable is poor, and the cable protective sleeve with the fireproof structure is provided.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides the cable protective sleeve with the fireproof structure, which has the advantages of good fireproof performance and the like, and solves the problem of poor fireproof performance.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a cable protection cover with fire resistive construction, includes the cable body, the cable body includes conductor, interior protective sheath and outer protective sheath, interior protective sheath installs the inside at outer protective sheath, install the fire prevention filling layer between outer protective sheath and the interior protective sheath, the inside fixed mounting of interior protective sheath has the thermal-insulated filling layer, the quantity of conductor is seven, seven conductor fixed mounting is in the inside of thermal-insulated filling layer, the outside fixedly connected with insulating sleeve of conductor, buffer structure has been installed between interior protective sheath and the outer protective sheath.

Further, the buffer structure comprises a plurality of hollow tubes, and the plurality of hollow tubes are distributed in the fireproof filling layer at equal intervals in a surrounding mode.

Further, buffer lugs are fixedly arranged on the inner top wall and the inner bottom wall of the hollow tube, and a gap is reserved between the buffer lugs.

Further, the hollow tube is respectively abutted against the outer wall of the inner protective sleeve and the inner wall of the outer protective sleeve.

Further, the heat insulation filling layer is mineral substance filling, and the insulating sleeve is crosslinked polyethylene insulating skin.

Further, the fireproof filling layer is a glass fiber braided fabric, and the outer protective sleeve and the inner protective sleeve are polyvinyl chloride protective sleeves.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

This cable protective sheath with fire-proof structure, through set up the fire prevention filling layer between outer protective sheath and interior protective sheath, the fire prevention filling layer is the glass fiber knitting, and glass fiber has higher high temperature resistance, has higher fusing point and heat resistance, and when the glass fiber knitting suffered the flame, it can not burn, and the insulating filling layer is the mineral substance filler simultaneously, can produce the insulating layer when the conflagration takes place to play the effect of protection to the conductor, improve cable body's fire behavior good, difficult messenger's conductor is impaired when taking place the conflagration.

Drawings

FIG. 1 is a cross-sectional view of the structure of the present utility model;

FIG. 2 is an enlarged view of the structure of FIG. 1A in accordance with the present utility model;

In the figure: 1. a cable body; 2. an outer protective sleeve; 3. an insulating sleeve; 4. a conductor; 5. a thermal insulation filling layer; 6. a fire-resistant filler layer; 7. an inner protective sleeve; 8. buffer bump; 9. and (3) a hollow tube.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, a cable protection sleeve with fireproof structure in this embodiment includes a cable body 1, the cable body 1 includes a conductor 4, an inner protection sleeve 7 and an outer protection sleeve 2, the inner protection sleeve 7 is installed inside the outer protection sleeve 2, a fireproof filling layer 6 is installed between the outer protection sleeve 2 and the inner protection sleeve 7, a heat insulation filling layer 5 is fixedly installed inside the inner protection sleeve 7, the number of the conductor 4 is seven, seven conductors 4 are fixedly installed inside the heat insulation filling layer 5, an insulating sleeve 3 is fixedly connected to the outside of the conductor 4, a buffer structure is installed between the inner protection sleeve 7 and the outer protection sleeve 2, the buffer structure includes hollow tubes 9, the number of the hollow tubes 9 is a plurality of, the hollow tubes 9 are distributed inside the fireproof filling layer 6 in a surrounding equidistance, buffer bumps 8 are fixedly installed on the inner top wall and the inner bottom wall of the hollow tubes 9, gaps are reserved between the two buffer bumps 8, and the hollow tubes 9 are respectively in contact with the outer wall of the inner protection sleeve 7 and the inner wall of the outer protection sleeve 2.

It should be noted that, play the effect of certain support through hollow tube 9, the inside hollow structure of hollow tube 9 simultaneously can produce certain deformation when receiving the pressure again, when cable body 1 received external striking, hollow tube 9 produced deformation and can made buffer bump 8 extrusion play the effect of buffering, buffer bump 8 is the rubber material.

In this embodiment, the heat insulation filling layer 5 is a mineral filler, and the insulating cover 3 is a crosslinked polyethylene insulating skin.

Among them, the insulating and filling layer 5 may be gypsum, silicate, alumina, etc., which can generate an insulating layer in the event of fire, reduce flame propagation and smoke generation, and thus protect the conductor 4.

In this embodiment, the fireproof filling layer 6 is a glass fiber braid, and the outer protective sleeve 2 and the inner protective sleeve 7 are both polyvinyl chloride protective sleeves.

It should be noted that, since the glass fiber itself is a very high temperature resistant material, it has a high melting point and heat resistance, and when the glass fiber braid is subjected to flame, it does not burn nor generate open flame, but rather, it plays a role of heat insulation and flame propagation blocking, thereby making the cable body 1 play a good role in fire resistance.

The working principle of the embodiment is as follows: through setting up fire prevention filling layer 6 between outer protective sheath 2 and interior protective sheath 7, fire prevention filling layer 6 is glass fiber braid, glass fiber has higher high temperature resistance, higher fusing point and heat resistance, when glass fiber braid suffered the flame, it can not burn, can not produce the naked light yet, thereby play thermal-insulated and the effect that blocks flame propagation, and thermal-insulated filling layer 5 is mineral substance filler simultaneously, can produce the insulating layer when the conflagration breaks out, thereby play the effect of protection to conductor 4, improve cable body 1's fire behavior, be difficult for making conductor 4 impaired when breaking out the conflagration, make cable's electric power can normally transmit, simultaneously through the hollow structure of hollow tube 9 inside, make hollow tube 9 play the supporting role again can produce certain deformation, when cable body 1 receives external impact, hollow tube 9 produces deformation and can make buffer bump 8 extrusion play the cushioning effect.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. Cable protection sleeve with fire-proof structure, including cable body (1), its characterized in that: the cable body (1) comprises conductors (4), an inner protection sleeve (7) and an outer protection sleeve (2), wherein the inner protection sleeve (7) is arranged inside the outer protection sleeve (2), a fireproof filling layer (6) is arranged between the outer protection sleeve (2) and the inner protection sleeve (7), the heat insulation filling layer (5) is fixedly arranged inside the inner protection sleeve (7), the number of the conductors (4) is seven, the conductors (4) are fixedly arranged inside the heat insulation filling layer (5), the insulation sleeve (3) is fixedly connected to the outer part of the conductors (4), and a buffer structure is arranged between the inner protection sleeve (7) and the outer protection sleeve (2).

2. A cable protective cover with fire protection structure according to claim 1, characterized in that: the buffer structure comprises a plurality of hollow tubes (9), wherein the hollow tubes (9) are distributed in the fireproof filling layer (6) at equal intervals.

3. A cable protective cover with fire protection structure according to claim 2, characterized in that: the inner top wall and the inner bottom wall of the hollow tube (9) are fixedly provided with buffer convex blocks (8), and a gap is reserved between the two buffer convex blocks (8).

4. A cable protective cover with fire protection structure according to claim 2, characterized in that: the hollow tube (9) is respectively abutted against the outer wall of the inner protective sleeve (7) and the inner wall of the outer protective sleeve (2).

5. A cable protective cover with fire protection structure according to claim 1, characterized in that: the heat insulation filling layer (5) is a mineral substance filling material, and the insulating sleeve (3) is a crosslinked polyethylene insulating skin.

6. A cable protective cover with fire protection structure according to claim 1, characterized in that: the fireproof filling layer (6) is made of glass fiber braided fabric, and the outer protective sleeve (2) and the inner protective sleeve (7) are polyvinyl chloride protective sleeves.