CN216719581U - Cable with fire-proof performance - Google Patents

Abstract

The utility model relates to the technical field of cables, and discloses a cable with fireproof performance, which comprises an outer flame-retardant protective sleeve unit and an inner heat-insulating protective sleeve arranged in the outer flame-retardant protective sleeve unit, wherein a conductive core unit is arranged in the inner heat-insulating protective sleeve; through the thermal-insulated lag of insulating against heat in electrically conductive core unit overcoat dress, and interior thermal-insulated lag includes the fire-resistant pipe and sets up the oxygen layer that separates in the fire-resistant pipe, adopts the oxygen layer that separates that the aluminium hydroxide material was made, and oxygen is isolated that can be fine for electrically conductive core unit can not be on fire when catching fire, protects the cable core.

Description

Cable with fire-proof performance

Technical Field

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

Background

Typically a rope-like cable made up of several or groups of conductors (at least two in each group) twisted together, with the conductors of each group being insulated from one another and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation, and the cable can be a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like.

The existing cable is poor in fireproof performance, cannot be used for preventing fire under the high-temperature condition of firing, is not comprehensive in protection of the cable core, and is easy to damage the cable core under the high-temperature fire catching condition.

In view of the above problems, the present invention provides a cable having fire-retardant properties.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cable with fireproof performance, which comprises an outer flame-retardant protective sleeve unit and an inner heat-insulating protective sleeve arranged in the outer flame-retardant protective sleeve unit, wherein a conductive core unit is arranged in the inner heat-insulating protective sleeve, so that the cable is good in fireproof performance and can protect a cable core, and the problems in the background art are solved.

In order to achieve the purpose, the utility model provides the following technical scheme: a cable with fireproof performance comprises an outer flame-retardant protective sleeve unit and an inner heat-insulating protective sleeve arranged in the outer flame-retardant protective sleeve unit, wherein a conductive core unit is arranged in the inner heat-insulating protective sleeve;

the conductive core unit comprises an insulating protective sleeve and a copper core arranged in the insulating protective sleeve, and the inner heat insulation protective sleeve is sleeved on the insulating protective sleeve;

the flame-retardant sleeve assembly comprises a low-smoke halogen-free pipe body and a cavity arranged in the low-smoke halogen-free pipe body, and ammonium phosphate powder is filled in the cavity.

Preferably, the inner heat-insulating protective sleeve comprises a refractory pipe and an oxygen-insulating layer arranged in the refractory pipe.

Preferably, the oxygen barrier layer is made of aluminum hydroxide.

Preferably, the insulating protective sleeve is a member made of ethylene propylene rubber.

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

1. according to the cable with the fireproof performance, the flame-retardant sleeve assembly is arranged in the halogen-free protective sleeve, and the ammonium phosphate powder is filled in the cavity formed in the low-smoke halogen-free pipe body, so that the ammonium phosphate powder leaks out of the cavity to extinguish an open fire after the low-smoke halogen-free pipe body is damaged under the condition of fire or short circuit, the loss is reduced, and the fireproof effect is good.

2. According to the cable with the fireproof performance, the inner heat insulation protective sleeve is sleeved outside the conductive core unit and comprises the fireproof tube and the oxygen insulation layer arranged in the fireproof tube, the oxygen insulation layer made of the aluminum hydroxide material is adopted, oxygen can be well insulated, the conductive core unit cannot be ignited when a fire happens, a cable core is protected, the fireproof tube is formed by weaving alkali-free quartz fiber yarns into a tube, coating organic high-temperature-resistant silicon resin and performing high-temperature vulcanization treatment, and the fireproof tube can resist high temperature under the condition of fire.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of an outer flame retardant protective cover unit of the present invention;

FIG. 3 is a cross-sectional view of a flame retardant sleeve assembly of the present invention;

FIG. 4 is a cross-sectional view of an inner thermal insulating sleeve of the present invention;

fig. 5 is a schematic view of the structure of the conductive core unit of the present invention.

In the figure: 1. an outer flame-retardant protective cover unit; 11. a halogen-free protective sleeve; 12. a flame retardant sleeve assembly; 121. a low smoke zero halogen tube body; 122. a cavity; 123. an ammonium phosphate salt powder; 2. an inner heat insulation protective sleeve; 201. a refractory tube; 202. an oxygen barrier layer; 3. a conductive core unit; 31. an insulating protective sleeve; 32. a copper core.

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.

Referring to fig. 1-2 and 5, a cable with fireproof performance includes an outer flame-retardant protective sheath unit 1 and an inner heat-insulating protective sheath 2 disposed in the outer flame-retardant protective sheath unit 1, and a conductive core unit 3 disposed in the inner heat-insulating protective sheath 2, where the outer flame-retardant protective sheath unit 1 includes a halogen-free protective sheath 11 and a flame-retardant sleeve assembly 12 disposed in the halogen-free protective sheath 11.

The conductive core unit 3 comprises an insulating protective sleeve 31 and a copper core 32 arranged in the insulating protective sleeve 31, and the inner heat insulation protective sleeve 2 is sleeved on the insulating protective sleeve 31.

Referring to fig. 3, the halogen-free sheath 11 is a member made of thermoplastic polyurethane, the flame-retardant sleeve assembly 12 includes a low-smoke halogen-free tube 121 and a cavity 122 formed in the low-smoke halogen-free tube 121, and ammonium phosphate powder 123 is filled in the cavity 122, the flame-retardant sleeve assembly 12 is disposed in the halogen-free sheath 11, and the ammonium phosphate powder 123 is filled in the cavity 122 formed in the low-smoke halogen-free tube 121, so that when a fire or a short circuit occurs, after the low-smoke halogen-free tube 121 is damaged, the ammonium phosphate powder 123 leaks out from the cavity 122 to extinguish the open fire, thereby reducing loss, and having a good fireproof effect.

Referring to fig. 4, the inner heat-insulating protective sleeve 2 includes a fire-resistant pipe 201 and an oxygen-insulating layer 202 disposed in the fire-resistant pipe 201, the oxygen-insulating layer 202 is made of aluminum hydroxide, preferably, the insulating protective sleeve 31 is made of ethylene propylene rubber, the inner heat-insulating protective sleeve 2 is sleeved outside the conductive core unit 3, the inner heat-insulating protective sleeve 2 includes the fire-resistant pipe 201 and the oxygen-insulating layer 202 disposed in the fire-resistant pipe 201, the oxygen-insulating layer 202 made of aluminum hydroxide can insulate oxygen well, so that the conductive core unit 3 does not catch fire when fire occurs, and protects the cable core, and the fire-resistant pipe 201 is woven from alkali-free quartz fiber yarn, and then coated with organic high-temperature-resistant silicone resin and vulcanized, so as to resist high temperature when fire occurs.

In summary, the following steps: the utility model provides a cable with fireproof performance, which comprises an outer flame-retardant protective sleeve unit 1 and an inner heat-insulating protective sleeve 2 arranged in the outer flame-retardant protective sleeve unit 1, wherein a conductive core unit 3 is arranged in the inner heat-insulating protective sleeve 2, a flame-retardant sleeve component 12 is arranged in a halogen-free protective sleeve 11, and a cavity 122 formed by a low-smoke halogen-free pipe body 121 is filled with ammonium phosphate powder 123, so that the ammonium phosphate powder 123 leaks out from the cavity 122 to extinguish open fire under the condition of fire or short circuit after the low-smoke halogen-free pipe body 121 is damaged, thereby reducing loss and having good fireproof effect; through insulating lag 2 in electrically conductive 3 overcoat of core unit, and interior insulating lag 2 includes fire-resistant pipe 201 and the oxygen layer 202 that separates that sets up in fire-resistant pipe 201, the oxygen layer 202 that separates that adopts the aluminium hydroxide material to make, can be fine completely cuts off oxygen, make electrically conductive core unit 3 can not catch fire when catching fire, protect the cable core, and after fire-resistant pipe 201 was woven into the pipe by alkali-free quartz fiber yarn, it forms through high temperature vulcanization with organic silicone resin to scribble, can be high temperature resistant under the circumstances of catching fire.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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 (4)

1. A cable with fireproof performance comprises an external flame-retardant protecting sleeve unit (1) and a cable body arranged outside the protecting sleeve unit

The inner heat insulation protective sleeve (2) in the flame-retardant protective sleeve unit (1) is arranged in the inner heat insulation protective sleeve (2)

-a conductive core unit (3), characterized in that: the outer flame-retardant protective sleeve unit (1) comprises halogen-free flame-retardant protective sleeve

Sheath (11) and fire-retardant sleeve subassembly (12) of setting in there is not steamed lag (11), there is not steamed

The protective sleeve (11) is a component made of thermoplastic polyurethane;

the conductive core unit (3) comprises an insulating protective sleeve (31) and a conductive core arranged on the insulating protective sleeve (31)

The inner copper core (32), and the inner heat insulation protective sleeve (2) is sleeved on the insulation protective sleeve (31);

the flame-retardant sleeve assembly (12) comprises a low-smoke halogen-free pipe body (121) and a low-smoke halogen-free pipe

A cavity (122) in the body (121), and ammonium phosphate powder (123) filled in the cavity (122).

2. A cable having fire-blocking properties according to claim 1, wherein: the above-mentioned

The inner heat-insulating protective sleeve (2) comprises a fire-resistant pipe (201) and an oxygen-insulating layer (202) arranged in the fire-resistant pipe (201).

3. A cable having fire-blocking properties according to claim 2, wherein: the above-mentioned

The oxygen barrier layer (202) is made of aluminum hydroxide.

4. A cable having fire-blocking properties according to claim 1, wherein: the above-mentioned

The insulating protective sleeve (31) is a component made of ethylene propylene rubber.

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