CN223092593U - Novel environment-friendly safe multi-core fireproof cable - Google Patents

Abstract

The utility model discloses a novel environment-friendly safe multi-core fireproof cable, which comprises a cable core, wherein the cable core is provided with three groups, the cable core consists of a copper core and a first insulating layer, the cable cores are mutually stranded, the outer parts of the three groups of cable cores are sleeved with a second insulating layer, the outer parts of the second insulating layer are provided with shielding layers, the outer parts of the shielding layers are sleeved with inner protection sleeves, the outer parts of the inner protection sleeves are sleeved with outer protection sleeves, and the structure solves the problems that the multi-core cable is easy to ignite when encountering a fire condition, and a certain gap exists between cable cores of the multi-core cable.

Description

Novel environment-friendly safe multi-core fireproof cable

Technical Field

The utility model relates to the technical field of cables, in particular to a novel environment-friendly safe multi-core fireproof cable.

Background

The multi-core cable is a cable with more than one insulated wire core, and mainly comprises a conductor, an insulating layer, a sheath and the like, because the multi-core cable is provided with a plurality of thin conductors, the multi-core cable has the advantages that a larger surface area can be provided, the conductors and the soft structure of the multi-core cable enable the multi-core cable to be more flexible, and the flexibility of the multi-core cable enables the multi-core cable to have higher mechanical strength. The multi-core cable is widely applied to the fields of aerospace, marine battle ships, industrial automation and the like. Fire protection is an important feature of multi-core cables.

For example, chinese patent CN216623814U, a multi-core combined cable, including oversheath and cable core, the cable core is equipped with many, and many the equal fixed connection of cable core is inside the oversheath, a plurality of notches have been seted up on the surface of oversheath, and every both ends all fixedly connected with anti-bending adhesive tape around the notch is inside, every anti-bending adhesive tape all is the X shape, every equal equidistant fixedly connected with of surface of cable core a plurality of rands, and every a plurality of trompils have all been seted up to both ends surface and middle-end surface around the rand to a plurality of laminating sets up each other between the rand on cable core surface, every the rand all is the U shape, every the left and right sides of rand bottom all is the circular arc transition setting.

The above-mentioned prior art can realize the use of multicore cable, but in the in-service use, on the one hand the multicore cable is easily lighted when meetting the condition of a fire, and the inside multicore cable crust of scene of a fire is easily lighted when taking place the condition of a fire, leads to the condition that the multicore cable appears burning out to shorten the life of multicore cable, on the other hand there is certain gap between the cable core of multicore cable, takes place to extrude each other between the cable core when receiving the extrusion, leads to the cable core crust to appear damaged, thereby increased the cable damage risk, consequently, do not satisfy current demand, have provided a novel environmental protection type multicore fireproof cable to this we.

Disclosure of utility model

The utility model aims to provide a novel environment-friendly safe multi-core fireproof cable, which aims to solve the problems that the multi-core cable provided in the background art is easy to ignite when encountering fire and certain gaps exist between cable cores of the multi-core cable.

In order to achieve the above purpose, the novel environment-friendly safe multi-core fireproof cable comprises a cable core, wherein the cable core is provided with three groups of cable cores, the cable core is composed of the cable core and a first insulating layer, the cable cores are mutually twisted, the outer parts of the three groups of cable cores are sleeved with a second insulating layer, the outer part of the second insulating layer is provided with a shielding layer, the outer part of the shielding layer is sleeved with an inner protection sleeve, and the outer part of the inner protection sleeve is sleeved with an outer protection sleeve.

Preferably, a filling layer is arranged between the shielding layer and the inner protection sleeve, and a reinforcing rib is arranged in the inner protection sleeve at the center of the wire core.

Preferably, the outermost side inside the inner protection sleeve is provided with a flame-retardant layer, the inside of the inner protection sleeve, which is positioned inside the flame-retardant layer, is provided with a heat-insulating layer, and the flame-retardant layer is fixed outside the heat-insulating layer through an extrusion device.

Preferably, the inner protection sleeve is provided with a metal protection sleeve inside the heat insulation layer, and the heat insulation layer is fixed outside the metal protection sleeve through winding of the wrapping equipment.

Preferably, a waterproof layer is arranged in the outer protective sleeve, and the waterproof layer is fixed outside the flame-retardant layer through winding of wrapping equipment.

Preferably, the inner part of the outer protective sleeve, which is positioned at the outer side of the waterproof layer, is provided with a fireproof layer, and the fireproof layer is connected with the waterproof layer through a high polymer adhesive.

Preferably, the inside that outer protective sleeve is located the flame retardant coating outside is provided with the wearing layer, and the wearing layer passes through the outside of crowded package equipment fixed at the flame retardant coating.

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

1. According to the utility model, the outer protective sleeve is arranged, so that protection can be provided for the cable, the inner part of the outer protective sleeve is provided with a plurality of hierarchical structures, the certain protection performance of the cable is improved, the wear-resisting performance of the whole structure of the cable can be improved by the outermost wear-resisting layer, the damage condition of other functional layers caused by external collision is reduced, the service life of the outer protective sleeve is prolonged, the cable can not be ignited in a fire scene until the fire condition in the fire scene is extinguished by the fire-resisting layer arranged in the middle position, the waterproof layer arranged in the innermost layer can effectively prevent moisture from penetrating into the cable, and the waterproof layer adopts special waterproof materials, so that the conductor and the insulating layer in the cable are protected from being corroded by the moisture, and the insulation performance and reliability of the cable are improved.

2. According to the utility model, gaps between cable cores can be reduced through the filling layer and the reinforcing ribs, the filling material arranged in the filling layer can effectively fix each group of wire cores in the cable, so that the wire cores of the cable are more uniformly arranged, the wire cores are prevented from moving or deforming when the cable is subjected to external force, the overall strength and stability of the cable are enhanced, meanwhile, the filling material can reduce the axial compression force between the wire cores, and meanwhile, the reinforcing ribs are inserted in the middle position in the filling layer, so that the rigidity and strength of the cable are further enhanced, and the cable is more stable when the cable bears external force such as bending, stretching and the like.

3. The cable core can be protected by arranging the inner protective sleeve, the flame retardant layer arranged on the outermost layer of the inner protective sleeve can keep structural integrity at high temperature, the cable is prevented from being damaged due to combustion, meanwhile, the flame retardant layer and the flame retardant layer are mutually matched, the integral fireproof performance of the cable is improved, the heat insulation layer arranged in the middle of the inner protective sleeve can isolate heat conducted by the cable, the heat insulation layer can effectively slow down invasion of fire to the cable and prevent the heat from being rapidly conducted into the cable when fire occurs, so that the cable is protected from being damaged, the metal protective sleeve arranged on the innermost layer of the inner protective sleeve has higher mechanical strength, mechanical effects such as external pressure and stretching can be effectively resisted, and conductors and insulation layers in the cable are protected from being physically damaged.

Drawings

FIG. 1 is a schematic view of the internal structure of the present utility model;

FIG. 2 is a cross-sectional view of the internal structure of the present utility model;

FIG. 3 is a partial enlarged view of the inner structure of the inner protective sleeve according to the present utility model;

FIG. 4 is an enlarged view of a part of the inner structure of the outer protective sheath according to the present utility model;

fig. 5 is an enlarged view of a portion of the area a of fig. 1 in accordance with the present utility model.

In the figure, 1, a wire core; 2, a first insulating layer, 3, a second insulating layer, 4, a shielding layer, 5, a filling layer, 6, reinforcing ribs, 7, an inner protective sleeve, 701, a flame retardant layer, 702, a heat insulating layer, 703, a metal protective sleeve, 8, an outer protective sleeve, 801, a wear-resistant layer, 802, a fireproof layer, 803 and a waterproof layer.

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.

Referring to fig. 1-5, an embodiment of the utility model provides a novel environment-friendly safe multi-core fireproof cable, which comprises a wire core 1, wherein the wire core 1 is provided with three groups, the wire core 1 consists of a copper core and a first insulating layer 2, the wire cores 1 are mutually twisted, the outer parts of the three groups of wire cores 1 are sleeved with a second insulating layer 3, the outer parts of the second insulating layer 3 are provided with a shielding layer 4, the outer parts of the shielding layer 4 are sleeved with an inner protection sleeve 7, the outer parts of the inner protection sleeve 7 are sleeved with an outer protection sleeve 8, the first insulating layer 2 and the second insulating layer 3 are made of polytetrafluoroethylene materials, and the shielding layer 4 is of a woven copper mesh structure.

The inside a plurality of hierarchical structures that are provided with of outer protective housing 8 improves the certain barrier propterty of cable, and the wearing performance of cable overall structure can be improved to the wearing layer 801 of outside, reduces the damaged condition that appears because of outside collision leads to other function levels to extension outer protective housing 8's life, the flame retardant coating 802 that intermediate position set up can ensure that the cable is not lighted in the scene of a fire, until the inside condition of a fire is put out in the scene of a fire, the waterproof layer 803 of innermost layer setting can effectively prevent moisture infiltration cable inside, thereby the conductor and the insulating layer of protection cable inside do not receive the moisture erosion.

Referring to fig. 1 and 2, a filling layer 5 is disposed between the shielding layer 4 and the inner protection sleeve 7, a reinforcing rib 6 is disposed in the inner protection sleeve 7 located at the center of the wire core 1, the reinforcing rib 6 is formed by braiding a plurality of aramid fiber bundles, and the filling layer 5 is made of polyurethane foam, so that the compression resistance of the cable is improved through the filling layer 5 and the reinforcing rib 6.

Referring to fig. 2 and 3, a flame-retardant layer 701 is disposed at the outermost side of the inner portion of the inner protective sleeve 7, a heat-insulating layer 702 is disposed at the inner portion of the inner protective sleeve 7 located at the inner side of the flame-retardant layer 701, the flame-retardant layer 701 is fixed at the outer portion of the heat-insulating layer 702 through extrusion equipment, the flame-retardant layer 701 is made of polyvinyl chloride, the heat-insulating layer 702 is made of rock wool after being crushed and mixed with resin, and the cable is prevented from burning through the flame-retardant layer 701.

Referring to fig. 2 and 3, the inner protective sleeve 7 is provided with a metal protective sleeve 703 inside the heat insulating layer 702, the heat insulating layer 702 is fixed outside the metal protective sleeve 703 by winding a wrapping device, and the metal protective sleeve 703 is made of metal aluminum, so that the compression resistance of the cable is further improved by the metal protective sleeve 703.

Referring to fig. 2 and 4, a waterproof layer 803 is disposed inside the outer protective sleeve 8, the waterproof layer 803 is fixed outside the flame retardant layer 701 by winding a wrapping device, the waterproof layer 803 is a double-sided aluminum plastic composite belt, an aluminum metal layer is disposed in the middle of the waterproof layer 803, and plastic layers are disposed on two sides of the waterproof layer, so that moisture can be prevented from entering the cable through the waterproof layer 803.

Referring to fig. 2 and 4, the outer protective sleeve 8 is provided with a fireproof layer 802 inside the waterproof layer 803, the fireproof layer 802 is connected with the waterproof layer 803 through a polymer adhesive, and the fireproof layer 802 is made of basalt fiber fireproof cloth, so that the cable is prevented from being ignited through the fireproof layer 802.

Referring to fig. 2 and 4, the outer protective sleeve 8 is provided with a wear-resistant layer 801 inside the outer side of the fireproof layer 802, the wear-resistant layer 801 is fixed outside the fireproof layer 802 by extrusion equipment, and the wear-resistant layer 801 is made of PET material, so that the wear resistance of the outer protective sleeve 8 is improved through the wear-resistant layer 801.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. The novel environment-friendly safe multi-core fireproof cable comprises a cable core (1), wherein the cable core (1) is provided with three groups, and is characterized in that the cable core (1) is composed of a copper core and a first insulating layer (2), the cable core is mutually twisted, the three groups of the cable core (1) are sleeved with a second insulating layer (3), the second insulating layer (3) is provided with a shielding layer (4) outside, the shielding layer (4) is sleeved with an inner protective sleeve (7) outside, and the inner protective sleeve (7) is sleeved with an outer protective sleeve (8) outside.

2. The novel environment-friendly safe multi-core fireproof cable according to claim 1, wherein a filling layer (5) is arranged between the shielding layer (4) and the inner protective sleeve (7), and reinforcing ribs (6) are arranged inside the inner protective sleeve (7) at the central position of the cable core (1).

3. The novel environment-friendly safe multi-core fireproof cable of claim 2, wherein a flame-retardant layer (701) is arranged on the outermost side inside the inner protective sleeve (7), a heat-insulating layer (702) is arranged inside the inner protective sleeve (7) inside the flame-retardant layer (701), and the flame-retardant layer (701) is fixed outside the heat-insulating layer (702) through extrusion equipment.

4. The novel environment-friendly safe multi-core fireproof cable of claim 3, wherein the inner protection sleeve (7) is arranged inside the heat insulation layer (702) and is provided with a metal protection sleeve (703), and the heat insulation layer (702) is fixed outside the metal protection sleeve (703) through wrapping by wrapping equipment.

5. The novel environment-friendly safe multi-core fireproof cable of claim 4, wherein a waterproof layer (803) is arranged inside the outer protective sleeve (8), and the waterproof layer (803) is fixed outside the flame-retardant layer (701) through wrapping by wrapping equipment.

6. The novel environment-friendly safe multi-core fireproof cable of claim 5, wherein the outer protective sleeve (8) is provided with a fireproof layer (802) inside the outer side of the waterproof layer (803), and the fireproof layer (802) is connected with the waterproof layer (803) through a high polymer adhesive.

7. The novel environment-friendly safe multi-core fireproof cable of claim 6, wherein the outer protective sleeve (8) is arranged on the outer side of the fireproof layer (802), and is provided with a wear-resistant layer (801), and the wear-resistant layer (801) is fixed on the outer side of the fireproof layer (802) through extrusion equipment.