CN216119656U

CN216119656U - Moisture-proof and fire-resistant cable for outdoor construction

Info

Publication number: CN216119656U
Application number: CN202122324289.0U
Authority: CN
Inventors: 汤海
Original assignee: Huizhou Binda Electronics Co ltd
Current assignee: Huizhou Binda Electronics Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-22
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a moisture-proof and fire-resistant cable for outdoor construction, which comprises a plurality of conductive cores, a dry filling layer and an outer protective sleeve, wherein the conductive cores are arranged in an inner cavity of the dry filling layer, the outer protective sleeve is arranged outside the dry filling layer, the outer walls of the conductive cores are all sleeved with a fire-resistant layer, the outer wall of the fire-resistant layer is sleeved with a fire-insulating layer, the outer wall of the fire-resistant layer is sleeved with a high-temperature-resistant layer, and the outer part of the dry filling layer is sleeved with a tin paper layer. The fireproof and heat-insulation conductive core body is provided with the fireproof layer, the fire insulation layer and the high-temperature-resistant layer, so that the fireproof and heat insulation of the conductive core body can be realized, and the waterproof and damp-proof effects on the conductive core body can be realized by matching the dry filling layer and the tinfoil layer, and the drying of the conductive core body is kept, so that the moistureproof and fireproof effects on the conductive core body are realized, and the safety of power transmission of the conductive core body is improved.

Description

Moisture-proof and fire-resistant cable for outdoor construction

Technical Field

The utility model relates to the field of cables, in particular to a moisture-proof and fire-resistant cable for outdoor construction.

Background

The cable is made of one or more mutually insulated conductors and an outer insulation protective layer, power or information is transmitted from one place to a wire at another place, the power demand of China is in a continuous increasing trend along with the rapid development of social economy, the cable is used as an important link for power transmission, and the quality of the cable determines the quality of the power transmission.

Most of cables used for outdoor construction need to be paved underground at present, the short circuit is easily caused due to the fact that the underground environment is wet, the power transmission fault is caused, meanwhile, the spontaneous combustion is easily caused due to the short circuit of the cables, the requirements for moisture resistance and fire resistance of the cables used for outdoor construction are high, the existing cables are difficult to meet the requirements for moisture resistance and fire resistance needed by the outdoor construction cables, and therefore the safety of the cables is reduced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a moisture-proof and fire-resistant cable for outdoor construction to solve the above-mentioned problems of the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the moisture-proof and fire-resistant cable for outdoor construction comprises a plurality of conductive cores, a dry filling layer and an outer protective sleeve, wherein the conductive cores are arranged in an inner cavity of the dry filling layer, and the outer protective sleeve is arranged outside the dry filling layer;

the outer wall of each conductive core body is sleeved with a fire-resistant layer, the outer wall of each fire-resistant layer is sleeved with a fire-insulating layer, the outer wall of each fire-resistant layer is sleeved with a high-temperature-resistant layer, and a tin paper layer is sleeved outside each dry filling layer.

Preferably, the outer wall cover on fire barrier is equipped with the conductor shielding layer, just the position is provided with the insulation shielding layer between the outer wall of dry filling layer and the tinfoil layer.

Preferably, a corrugated aluminum sheath is arranged between the outer wall of the tin paper layer and the outer protective sleeve, and the outer protective sleeve is made of heat-resistant polyvinyl chloride.

Preferably, the fire-resistant layer is a fire-resistant mica tape, and the fire-insulating layer is low-smoke halogen-free flame-retardant polyolefin.

Preferably, the dry filling layer is a glass fiber rope, and the insulation shielding layer is a copper wire braided wrapping tape.

The utility model has the technical effects and advantages that:

(1) according to the utility model, the fireproof layer, the fire insulation layer and the high temperature resistant layer which are arranged outside the conductive core body are utilized, so that the fireproof and heat insulation of the conductive core body can be realized, and the waterproof and moistureproof effects on the conductive core body can be realized by matching the dry filling layer and the tinfoil layer, so that the conductive core body is kept dry, the moistureproof and fireproof effects on the conductive core body are realized, and the safety of power transmission of the conductive core body is improved;

(2) the corrugated aluminum sheath can bear the effects of short-circuit current, radial water resistance and lateral pressure resistance of the cable, so that the safety of the cable in the process of pre-buried installation and power transmission is improved.

Drawings

Fig. 1 is a partial perspective view of the present invention.

FIG. 2 is a front sectional structural view of the present invention.

Figure 3 is a schematic diagram of a front cross-sectional structure of the cable core.

In the figure: 1. a conductive core; 2. drying the filling layer; 3. an outer protective sleeve; 4. a corrugated aluminum sheath; 5. a tin paper layer; 6. an insulating shield layer; 7. a refractory layer; 8. a fire barrier layer; 9. a high temperature resistant layer; 10. a conductor shield layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

The utility model provides a moisture-proof and fire-resistant cable for outdoor construction as shown in figures 1-3, which comprises a plurality of conductive cores 1, a dry filling layer 2 and an outer protective sleeve 3, wherein the conductive cores 1 are arranged in the inner cavity of the dry filling layer 2, the dry filling layer 2 is a glass fiber rope, and the insulation heat resistance and the self strength of the cable are enhanced by utilizing the advantages of the glass fiber such as insulativity, heat resistance, corrosion resistance, high mechanical strength and the like, so that the quality of the cable is improved, the outer protective sleeve 3 is arranged outside the dry filling layer 2, the outer protective sleeve 3 is made of heat-resistant polyvinyl chloride (PVC), the PVC is short for PVC, and has stronger heat resistance and insulativity, and the outer wall of the cable has good protective effect;

the outer walls of the conductive core bodies 1 are all sleeved with a fire-resistant layer 7, the fire-resistant layer 7 is made of fire-resistant mica tapes, the fire-resistant layer 7 made of the fire-resistant mica tapes has excellent high-temperature resistance and combustion resistance, so that the fire-resistant layer 7 cannot be ignited, and has good fireproof effect on the external structure, the fire-proof layer 8 is sleeved on the outer wall of the fire-proof layer 7, and the fire-proof layer 8 is low-smoke halogen-free flame-retardant polyolefin, and through the fire-proof layer 8 made of the low-smoke halogen-free flame-retardant polyolefin, the flame-retardant insulation layer has the advantages that the effect of isolating oxygen can be achieved, a low-oxygen or oxygen-free environment is formed inside the flame-retardant insulation layer 8, the combustion condition of the conductive core body 1 is isolated, the high-temperature-resistant layer 9 is sleeved on the outer wall of the flame-retardant layer 7, the tinfoil layer 5 is sleeved outside the dry filling layer 2, and the tinfoil layer 5 can achieve a good waterproof effect and prevent moisture from entering the dry filling layer 2;

the outer wall of the fire insulation layer 8 is sleeved with a conductor shielding layer 10, an insulation shielding layer 6 is arranged between the outer wall of the dry filling layer 2 and the tinfoil layer 5, the insulation shielding layer 6 is a copper wire braided wrapping tape, and the conductor shielding layer 10 and the insulation shielding layer 6 are arranged to play a shielding role together, so that influence on cables due to an electromagnetic field generated by current circulation is avoided;

the position between the outer wall of the tinfoil layer 5 and the outer protective sleeve 3 is provided with the corrugated aluminum protective sleeve 4, so that the strength of the cable is improved, and the cable has good bending resistance.

The working principle of the utility model is as follows: after the cable is pre-buried outdoors and underground, the corrugated aluminum sheath 4 can play a certain water-blocking role by matching with the tin paper layer 5, so that underground moisture is prevented from penetrating and contacting with the conductive core body 1, the waterproof performance of the conductive core body 1 is achieved, meanwhile, the drying filling layer 2 is matched to position a plurality of conductive core bodies 1, a drying and water-absorbing role is played, the dryness of the outside of the conductive core body 1 is kept, the moisture-proof effect of the conductive core body 1 is further achieved, the conductive core body 1 cannot generate a short circuit phenomenon due to moisture, the fire-retardant layer 7 arranged outside each single conductive core body 1 can play a role of flame retardance and high temperature resistance, the phenomenon that the fire-retardant layer 7 generates spontaneous combustion due to high temperature generated by the conductive core body 1 is avoided, meanwhile, the fire-insulating layer 8 can obstruct oxygen, eliminate oxygen conditions required by flame combustion, and further achieve the purpose of fire insulation, the setting of the high temperature resistant layer 9 of 8 outer walls on fire barrier layer is cooperated again, a thermal-insulated effect can be played, the heat that produces when avoiding the operation or the trouble of the conductive core 1 is transferred to the outside and is caused the burning of external structure, the security of the use of the conductive core 1 is further improved.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used by the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the description of the attached drawings.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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

1. The moisture-proof fire-resistant cable for outdoor construction comprises a plurality of conductive cores (1), a dry filling layer (2) and an outer protective sleeve (3), and is characterized in that the conductive cores (1) are arranged in the inner cavity of the dry filling layer (2), and the outer protective sleeve (3) is arranged outside the dry filling layer (2);

the conductive core is characterized in that a fire-resistant layer (7) is sleeved on the outer wall of each conductive core body (1), a fire-insulating layer (8) is sleeved on the outer wall of each fire-resistant layer (7), a high-temperature-resistant layer (9) is sleeved on the outer wall of each fire-resistant layer (7), and a tin paper layer (5) is sleeved on the outer portion of each dry filling layer (2).

2. The moisture-proof and fire-resistant cable for outdoor construction according to claim 1, wherein the outer wall of the fire-insulating layer (8) is sleeved with a conductor shielding layer (10), and an insulation shielding layer (6) is arranged between the outer wall of the dry filling layer (2) and the tin paper layer (5).

3. The moisture-proof and fire-resistant cable for outdoor construction according to claim 1, wherein a corrugated aluminum sheath (4) is arranged between the outer wall of the tin paper layer (5) and the outer protective sheath (3), and the outer protective sheath (3) is made of heat-resistant polyvinyl chloride.

4. The moisture-proof and fire-resistant cable for outdoor construction according to claim 1, wherein the fire-resistant layer (7) is fire-resistant mica tape and the fire barrier layer (8) is low-smoke halogen-free flame-retardant polyolefin.

5. The moisture-proof and fire-resistant cable for outdoor construction according to claim 2, wherein the dry filling layer (2) is a glass fiber rope, and the insulation shielding layer (6) is a copper wire braided tape.