CN115512876A - An inorganic mineral insulation isolation type B1 class flame retardant high temperature fire resistant cable - Google Patents

Abstract

The invention discloses an inorganic mineral insulation isolation type B1-level flame-retardant high-temperature fire-resistant cable which comprises an isolation layer, wherein an inorganic mineral insulation layer is wrapped on the inner surface of the isolation layer, a wire is wrapped inside the inorganic mineral insulation layer, an insulation filling strip is wrapped at a gap formed by enclosing the wires, an insulation protection layer is arranged on the outer surface of the wire, a flame-retardant layer is wrapped inside the insulation protection layer, and a copper core is wrapped inside the flame-retardant layer. This fire-retardant high temperature fire resisting cable of inorganic mineral insulation isolated form B1 level at the in-process of daily use, has strengthened the ability of insulation protection, and the fire-retardant layer through the wire and the effectual cable of having avoided in long-time use that the wire temperature is too high and the fire that takes place have caused the loss of property, and the effectual isolated harm of corrosive substance to the cable of anticorrosive coating outside the protective layer.

Description

An inorganic mineral insulation isolation type B1 class flame retardant high temperature fire resistant cable

technical field

The invention relates to the technical field of cable manufacturing, in particular to an inorganic mineral insulation isolation type B1 grade flame-retardant high-temperature fire-resistant cable

Background technique

Wire and cable are used to transmit electric (magnetic) energy, information and wire products that realize electromagnetic energy conversion. In the broad sense, wires and cables are also referred to as cables for short. In the narrow sense, cables refer to insulated cables, which can be defined as: a collection composed of the following parts; one or more insulated cores, and their respective possible coatings. The protective layer and the outer sheath, the cable can also have an additional uninsulated conductor, and the insulation layer is extruded (wound) outside the conductor, such as an overhead insulated cable, or several cores twisted (corresponding to the phase line, neutral line and Ground wire), such as overhead insulated cables with more than two cores, or add a sheath layer, such as plastic/rubber sheathed wires and cables.

The setting of the existing cable insulation protection layer is relatively simple, the protection effect is poor, and it does not have a certain flame retardancy, which may easily lead to fire caused by the high temperature of the wire during long-term use of the cable, resulting in property loss. , and in the cable laying project, more original methods are used, which is time-consuming and laborious, not to mention there are potential safety hazards.

Contents of the invention

The object of the present invention is to provide a kind of inorganic mineral insulation isolation type B1 flame-retardant high-temperature fire-resistant cable, to solve the problem that the existing cable insulation protective layer proposed in the above-mentioned background technology is relatively simple to set up, the protective effect is poor, and does not have a certain The flame retardancy of the cable is easy to cause the cable to catch fire due to the high temperature of the wire during the long-term use, resulting in property loss, and in the cable laying project, more original methods are used, which is time-consuming and labor-intensive. There are also security risks.

In order to achieve the above object, the present invention provides the following technical proposal: an inorganic mineral insulation isolation type B1 grade flame-retardant high-temperature fire-resistant cable, including an isolation layer, the inner surface of the isolation layer is wrapped with an inorganic mineral insulating layer, and the inorganic mineral The inside of the insulating layer is wrapped with wires, and the gaps between the wires are wrapped with insulating filling strips. The outer surface of the wires is provided with an insulating protective layer, and the inner wrapping of the insulating protective layer is provided with A flame-retardant layer, the inside of the flame-retardant layer is wrapped with a copper core.

Preferably, the outer surface of the isolation layer is wrapped with a fire barrier layer, the outer surface of the fire barrier layer is wrapped with a braided mesh layer, and the outer surface of the braided mesh layer is wrapped with a protective layer.

Preferably, the outer surfaces of both ends of the protective layer are respectively fixed with a connecting female head and a connecting male head through buckles, and the outer surfaces of the connecting female head and the connecting male head are fixedly installed with insulating shells, and the connecting female head A contact block is fixedly installed inside the contact block, a sleeve is fixedly installed at one end of the contact block, a threaded section is provided at one end of the outer surface of the connecting female head, an output block is fixedly installed inside the connecting male head, and the output An output head is fixedly installed at one end of the block, and a nut is movably installed at one end of the outer surface of the connecting male head.

Preferably, a spacer is provided on the surface of the fire-proof layer, an interlayer is wrapped inside the spacer, and an inner sleeve is wrapped inside the interlayer.

Preferably, the surface of the protective layer is coated with anti-corrosion paint, and the inner wrapping of the anti-corrosion paint is provided with a wear-resistant layer.

Preferably, the connecting female head and the connecting male head are fixedly connected to the nut through a threaded section, and a rubber sealing gasket is fixedly installed at the bottom inside the nut.

Compared with prior art, the beneficial effect of the present invention is:

The cable, in the process of daily use, enhances the ability of insulation protection, and effectively avoids the fire caused by the high temperature of the cable during long-term use through the flame-retardant layer and fire-proof layer of the wire, causing property damage. The anti-corrosion coating outside the protective layer effectively isolates the damage of the corrosive body to the cable.

The cable, in the process of daily use, the quick connector can make the cable laying project simple and convenient, improve work efficiency and shorten the construction period of the project, and avoid the safety hazard caused by the original wiring method.

Description of drawings

Fig. 1 is a cable structure diagram of the present invention;

Fig. 2 is a wire structure diagram of the present invention;

Fig. 3 is the structural diagram of the fire barrier of the present invention;

Fig. 4 is the protective layer structural diagram of the present invention;

Fig. 5 is a structural diagram of the connector of the present invention;

In the figure: 1. Isolation layer; 2. Inorganic mineral insulation layer; 3. Conductor; 4. Insulation filling strip; 5. Fire insulation layer; Flame-retardant layer; 10, copper core; 11, wear-resistant layer; 12, anti-corrosion coating; 13, spacer; 14, interlayer; 15, inner sleeve; 16, buckle; 17, connecting female head; 18, connecting male head ; 19, insulating shell; 20, contact block; 21, bushing; 22, thread segment; 23, output block; 24, output head; 25, nut; 26, rubber gasket.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1-5, the present invention provides a technical solution: an inorganic mineral insulation isolation type B1 grade flame-retardant high-temperature fire-resistant cable, including an isolation layer 1, and the inner surface of the isolation layer 1 is wrapped with an inorganic mineral insulation layer 2, The inorganic mineral insulating layer 2 can better avoid electric leakage accidents. The interior of the inorganic mineral insulating layer 2 is wrapped with a number of wires 3, and the gaps formed between the several wires 3 are wrapped with insulating filling strips 4. The filling strip 4 can make the wires evenly distributed around the insulating filling strip 4, the outer surface of the wire 3 is provided with an insulating protective layer 8, the insulating protective layer 8 can further play the role of insulation, and the inside of the insulating protective layer 8 wraps the flame retardant layer 9. The flame retardant layer 9 effectively avoids the fire caused by the high temperature of the cable during long-term use. The inside of the flame retardant layer 9 wraps the copper core 10. The copper core 10 has good conductivity. The isolation layer 1 The outer surface of the fire insulation layer 5 is wrapped with a fire insulation layer 5, which can prevent the external flame from burning into the cable, thereby causing heavy losses. The outer surface of the fire insulation layer 5 is wrapped with a braided mesh layer 6, which has a Good fixing effect, avoiding damage to the internal structure of the cable during the pulling process, the outer surface of the braided mesh layer 6 is wrapped with a protective layer 7, and the protective layer 7 can protect the cable from external damage.

The outer surfaces of the two ends of the protective layer 7 are respectively fixed with connecting female connectors 17 and connecting male connectors 18 through buckles 16. The connecting female connectors 17 and connecting male connectors 18 can make the cable laying project simple and convenient, improve work efficiency and shorten the construction period of the project , to avoid potential safety hazards caused by the original wiring method, the outer surfaces of the connecting female 17 and the connecting male 18 are fixedly installed with an insulating shell 19, the insulating shell 19 prevents leakage at the cable joint, and avoids electric shock to others. A contact block 20 is fixedly installed inside 17, and the contact block 20 is closely connected with one end of the cable to achieve the effect of electrification. One end of the contact block 20 is fixedly installed with a sleeve 21, and one end of the outer surface connected to the female head 17 is provided with a threaded section 22 , the inside of the connecting male head 18 is fixedly installed with an output block 23, the output block 23 has the same function as the contact block 20, and both of them realize the effect of electrification, and one end of the output block 23 is fixedly installed with an output head 24, and the output The head 24 is inserted into the casing 21 so that the two sections of cables are connected. A nut 25 is movably installed on one end of the outer surface of the connecting male head 18, and the two joints are fixedly connected together through the cooperation of the nut 25 and the threaded section 22. The surface of the fire layer 5 is provided with a spacer 13, the inner layer of the spacer 13 wraps the interlayer 14, the inner layer of the interlayer 14 wraps the inner sleeve 15, and the surface of the protective layer 7 is coated with an anti-corrosion coating 12, which effectively isolates the corrosion body from the cable. The anti-corrosion coating 12 wraps the wear-resistant layer 11 inside, and the wear-resistant layer 11 can protect the external damage caused by the cable during daily use. The connecting female head 17 and the connecting male head 18 are fixedly connected to the nut 25 through the threaded section 22, The bottom inside the nut 25 is fixedly equipped with a rubber gasket 26, and the rubber gasket 26 can play a waterproof role.

Working principle: During the daily use of the cable, the ability of insulation protection is enhanced, and the flame-retardant layer 9 and fire-proof layer 5 of the wire 3 effectively avoid the occurrence of excessive temperature of the wire during long-term use. Fire caused the loss of property. The anti-corrosion coating 12 outside the protective layer effectively isolated the damage of the corrosive body to the cable. The wear-resistant layer 11 can protect the external damage caused by the cable during daily use. The weaving layer 6 has a good Fixing function, avoiding damage to the internal structure of the cable during the pulling process, connecting the female connector 17 and connecting male connector 18 can make the cable laying project simple and convenient, improve work efficiency and shorten the construction period of the project, and avoid the safety brought by the original wiring method Hidden danger, the output block 23 has the same function as the contact block 20, both of which achieve the effect of electrification. During the cable connection process, the output head 24 is inserted into the casing 21 so that the two sections of cables are connected, and the connecting female head 17 and the connecting male head 18 The fixed connection between the threaded section 22 and the nut 25 can make the cable laying project simple and convenient, improve work efficiency and shorten the construction period of the project, and avoid potential safety hazards caused by the original wiring method.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. An inorganic mineral insulation isolation type B1 grade flame-retardant high-temperature fire-resistant cable, comprising an isolation layer (1), is characterized in that: the inner surface of the isolation layer (1) is wrapped with an inorganic mineral insulation layer (2), the The interior of the inorganic mineral insulating layer (2) is wrapped with wires (3), and the gap formed between the wires (3) is wrapped with insulating filling strips (4). The outer surface is provided with an insulating protective layer (8), and the inner wrapping of the insulating protective layer (8) is provided with a flame-retardant layer (9), and the inner wrapping of the flame-retardant layer (9) is provided with a copper core (10). 2. An inorganic mineral insulated isolation type B1 grade flame-retardant high-temperature fire-resistant cable according to claim 1, characterized in that: the outer surface of the isolation layer (1) is wrapped with a fire-resistant layer (5), and the outer surface of the isolation layer (1) The outer surface of the fire layer (5) is wrapped with a braided mesh layer (6), and the outer surface of the braided mesh layer (6) is wrapped with a protective layer (7). 3. An inorganic mineral insulated isolation type B1 class flame-retardant high-temperature fire-resistant cable according to claim 2, characterized in that: the outer surfaces of the two ends of the protective layer (7) are respectively fixed and connected by buckles (16). Female head (17) and connecting male head (18), the outer surface of described connecting female head (17) and connecting male head (18) are all fixedly installed with insulating shell (19), described connecting female head (17) A contact block (20) is fixedly installed inside, a sleeve (21) is fixedly installed at one end of the contact block (20), and a threaded segment (22) is provided on one end of the outer surface of the connecting female head (17). An output block (23) is fixedly installed inside the connecting male head (18), an output head (24) is fixedly installed at one end of the output block (23), and an output head (24) is fixedly installed at one end of the outer surface of the connecting male head (18). nut (25). 4. An inorganic mineral insulated isolation type B1 grade flame-retardant high-temperature fire-resistant cable according to claim 2, characterized in that: a spacer (13) is provided on the surface of the fire-proof layer (5), and the spacer (13) has an inner wrapping interlayer (14), and the inner wrapping of the interlayer (14) is provided with an inner sleeve (15). 5. A kind of inorganic mineral insulation isolation type B1 class flame-retardant high-temperature fire-resistant cable according to claim 2, characterized in that: the surface of the protective layer (7) is coated with an anti-corrosion coating (12), and the anti-corrosion coating ( 12) The inner package is provided with a wear-resistant layer (11). 6. An inorganic mineral insulated isolation type B1 grade flame-retardant high-temperature fire-resistant cable according to claim 3, characterized in that: the connecting female (17) and connecting male (18) are connected through the threaded section (22) and The nut (25) is fixedly connected, and the bottom inside the nut (25) is fixedly equipped with a rubber gasket (26).

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