CN215577762U - Flame-retardant B1-grade flexible control cable - Google Patents

Abstract

The utility model discloses a flame-retardant B1-grade flexible control cable, in particular to the field of electric wire and cable devices, which comprises a lead, wherein the outer part of the lead is coated with an inner insulating glue layer, the outer part of the inner insulating glue layer is fixedly connected with an outer insulating glue layer, one side of the outer insulating glue layer is clamped with a central bracket, the other side of the outer insulating glue layer is clamped with an outer peripheral bracket, the outer part of the outer peripheral bracket is fixedly connected with a wrapping tape, the outer part of the wrapping tape is fixedly connected with an inner sheath, the outer part of the inner sheath is fixedly connected with a second shielding layer, the outer part of the second shielding layer is fixedly connected with a first shielding layer, the outer part of the first shielding layer is fixedly connected with an outer sheath, the utility model is provided with the inner insulating glue layer, the outer sheath and the inner sheath, the cable that makes to set up according to this kind of mode has postponed ageing time greatly because of adopting the reason of silicon material, prolongs the life of cable, and excellent compliance has also brought very big facility for the construction.

Description

Flame-retardant B1-grade flexible control cable

Technical Field

The utility model relates to the technical field of electric wire and cable devices, in particular to a flame-retardant B1-grade flexible control cable.

Background

The modern urbanization construction of China shows a state of accelerated development. Due to the continuous expansion of subway construction, the requirement of the subway construction on the fireproof performance is very high, so that the traditional national standard common control cable cannot meet the requirement. Once a fire disaster occurs, rescue is extremely important, rescue equipment such as a fire pump, fire control smoke evacuation, emergency lighting, a fire elevator and the like all become guarantee for people to escape, the guaranteed 'life lines' are cables, the existing flame-retardant B1-grade control cable on the market is a control cable of WDZB1-KYJYP (WDZB1-KYJY) model, and the cable structure comprises a conductor of stranded 5-class stranded copper wires, an insulating layer of low-smoke halogen-free crosslinked polyethylene, a filling layer of flame-retardant halogen-free materials, a wrapping layer of environment-friendly flame-retardant mineral materials, an inner sheath of B1-grade flame-retardant low-smoke halogen-free polyolefin, a shielding layer of fine weaving copper wires and an outer sheath of B1-grade flame-retardant low-smoke halogen-free polyolefin.

The cable insulation material is made of a cross-linked polyethylene material, the insulation temperature resistance level is 90 ℃, the cross-linked polyethylene material is high in hardness and difficult to bend due to cross-linking, the softness is poor, the laying difficulty of a specific place is high, hydrolysis can happen to the cross-linked polyethylene, the cross-linked polyethylene is not flame-retardant and is a combustible combustion-supporting material, the construction difficulty of a joint part needs to be increased through special treatment, in addition, the internal lead of the traditional cable is easy to translocate in the sheath, the strength of a wire core is reduced, and the service life of the wire core is prolonged.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a flame-retardant B1-grade flexible control cable, and the technical problems to be solved by the utility model are as follows: the crosslinked polyethylene material has high hardness, is not easy to bend, has poor softness, has high laying difficulty in a specific place, can generate hydrolysis condition, is not flame-retardant and is a flammable combustion-supporting material, and the construction difficulty of joint parts needs special treatment is increased; the internal wire of the traditional cable is easy to translocate in the sheath, so that the strength of the wire core is reduced, and the service life of the wire core is prolonged.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a fire-retardant B1 level flexible control cable, includes the wire, the outside cladding of wire has the internal insulation glue film, the outside fixedly connected with external insulation glue film of internal insulation glue film, one side joint of external insulation glue film has central support, the opposite side joint of external insulation glue film has the periphery support, the outside fixedly connected with band of periphery support, the outside fixedly connected with inner sheath in band, the outside fixedly connected with second shielding layer of inner sheath, the first shielding layer of outside fixedly connected with of second shielding layer, the outside fixedly connected with oversheath of first shielding layer.

In a preferred embodiment, the wire is an oxygen-free copper material.

In a preferred embodiment, the inner insulating glue layer is a polymethylvinylsiloxane material.

In a preferred embodiment, the outer insulating glue layer is a silicone rubber hybrid material.

In a preferred embodiment, the outer sheath is a silicone rubber mixed sulfide.

In a preferred embodiment, the outer sheath and the inner sheath are made of the same material, and the second shielding layer and the first shielding layer are both tinned copper wires.

In a preferred embodiment, the central support is a regular triangle with three sides each being a circular arc of one sixth, one single side of two peripheral supports and one side of one central support form a complete circle, and the peripheral supports and the central support are both provided with six sides and can be combined with each other for use.

The utility model has the technical effects and advantages that:

1. according to the utility model, the inner insulating glue layer, the outer sheath and the inner sheath are arranged, so that the cable arranged according to the mode can provide rescue time of more than 3 hours for fire rescue under the condition of fire, and meanwhile, as the cable is made of silicon rubber insulating materials, the long-term working temperature of the cable can reach 200 ℃, so that the aging time of the cable is greatly prolonged, the service life of the cable is prolonged, and the excellent flexibility also brings great convenience to construction.

2. The wire protection device is provided with the central support and the peripheral support, so that six small circles are formed inside by combining and using the six central supports and the six peripheral supports and are used for mounting the wires coated with the inner insulation adhesive layer and the outer insulation adhesive layer, a large circle is formed outside the wire protection device, the wire protection device is conveniently protected by the outer protection layer, and the damage to the inside of the wire due to the fact that the wire is pressed for a long time in the use process is avoided.

Drawings

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

Fig. 2 is a schematic view of the expanded structure of the present invention.

Fig. 3 is a schematic view of the structure of the outer layer of the present invention.

FIG. 4 is a schematic view of the inner layer structure of the present invention.

Fig. 5 is a schematic view of the central structure of the present invention.

The reference signs are: 1. a central support; 2. wrapping belts; 3. a second shielding layer; 4. an outer sheath; 5. an inner insulating glue layer; 6. an outer insulating glue layer; 7. a peripheral support; 8. an inner sheath; 9. a first shielding layer; 10. and (4) conducting wires.

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 the attached drawings 1 and 2 in the specification, the flame-retardant B1-grade flexible control cable comprises a lead 10, an inner insulating glue layer 5, an outer insulating glue layer 6, an outer sheath 4 and an inner sheath 8, wherein the lead 10 is made of oxygen-free copper, and the material and the installation mode are high in conductor rate, and good in processability, welding performance, corrosion resistance and low-temperature performance.

Furthermore, the inner insulating glue layer 5 is made of polymethyl vinyl siloxane material, and silica gel is produced by the polymethyl vinyl siloxane through a meteorological method, so that the porcelain forming effect is ensured, and the high temperature resistance is ensured.

Furthermore, the outer insulating glue layer 6 is a silicon rubber mixed material, the tensile tear strength of the mixed glue is enhanced through silicon dioxide in the mixed material, the strength of a magnetized layer is increased under the combined action of magnetized powder and the silicon dioxide, the processing extrudability is improved by taking zinc stearate and calcium stearate as processing lubricants, the silicon dioxide molecules and the polymethylvinylsiloxane are organically combined by hydroxyl siloxane to improve the water resistance, the silicon rubber crosslinking reaction degree is promoted by the hydrogen siloxane to obtain good physical properties, and the whole outer insulating glue layer 6 has high tensile strength performance and high flame retardance through the silicon rubber mixed material, so that the softness of the rubber is possessed, and the defect of insufficient tensile strength of the silicon rubber is optimized.

Further, the outer sheath 4 is a silicon rubber mixed sulfide which has the advantages of no toxicity, low smoke, high tensile strength, good flame retardant effect, high wear resistance and the like.

Further, the outer sheath 4 and the inner sheath 8 are silicon rubber mixed sulfides which are non-toxic, low-smoke, high in tensile strength, good in flame retardant effect, high in wear resistance and the like, and the second shielding layer 3 and the first shielding layer 9 are tinned copper wires or bare copper wires, copper strips, Bell conductors, aluminum-plastic composite strips and the like and are produced in a wrapping or longitudinal wrapping mode.

The implementation scenario is specifically as follows:

simulating the burning condition of the wire under the condition of fire, taking a plurality of cables with the length of 100CM, placing one part in the same burning test box at different angles, placing the other part in a plurality of burning test boxes at different angles, wherein the temperature of the flame subjected to the burning test is 950 ℃, the burning time is three hours, in the process, the flame is primarily blocked by the outer sheath 4, after the flame breaks through the burning from the outside of the outer sheath 4 to the outside of the first shielding layer 9, the second shielding layer 3 and the first shielding layer 9 are subjected to double shielding to achieve the effect of secondary blocking, after the flame breaks through the burning from the outside of the second shielding layer 3 and the first shielding layer 9 to the inside, the inner sheath 8 is subjected to tertiary blocking, and when the flame breaks through the protection of the inner sheath 8 to the inside, the final blocking treatment is carried out by the inner insulating glue layer 5 and the outer insulating glue layer 6 which are coated outside the wire 10, each cable is taken out after three hours for comparison and recording, if the cables are not short-circuited, current can flow from one side of the conducting wire 10 to the other side, and therefore the fact that the cables can persist for three hours in a fire disaster can be proved, and secondary damage to the environment and personal safety can be avoided.

Referring to the attached drawings 3-5 in the specification, the flame-retardant flexible control cable of B1 level of the embodiment comprises a lead 10, wherein the outer part of the lead 10 is coated with an inner insulating glue layer 5, the outer part of the inner insulating glue layer 5 is fixedly connected with an outer insulating glue layer 6, the inner insulating glue layer 5 and the outer insulating glue layer 6 are used for final flame blocking, one side of the outer insulating glue layer 6 is clamped with a central support 1, the other side of the outer insulating glue layer 6 is clamped with an outer peripheral support 7, the outer part of the outer peripheral support 7 is fixedly connected with a wrapping tape 2, the outer part of the wrapping tape 2 is fixedly connected with an inner sheath 8, the inner sheath 8 is used for third-level flame blocking, the outer part of the inner sheath 8 is fixedly connected with a second shielding layer 3, the outer part of the second shielding layer 3 is fixedly connected with a first shielding layer 9, the second shielding layer 3 and the first shielding layer 9 are used for second-level flame blocking, the outer sheath 4 is fixedly connected with the outer part of the first shielding layer 9, the outer sheath 4 is used for the first stage flame barrier.

Further, the central support 1 is a regular triangle with three sides each being a sixth of a circular arc, one single side of two peripheral supports 7 and one side of one central support 1 form a complete circle, the peripheral supports 7 and the central support 1 are both provided with six and can be used in combination with each other, so that the inner wire 10 can be protected conveniently.

The implementation scenario is specifically as follows:

in the using process of the cable, once an object with overlarge external weight extrudes the conductor 10, the conductor is protected by the outer sheath 4 arranged on the outermost layer, then the conductor is protected by the first shielding layer 9 arranged on the inner side of the outer sheath 4, force is applied to the outside of the six outer circumference brackets 7 after the conductor is respectively protected by the second shielding layer 3, the inner sheath 8 and the wrapping tape 2, and the outer insulating glue layers 6 connected with the six outer circumference brackets 7 and the six center brackets 1 arranged on the inner sides of the outer insulating glue layers 6 are subjected to integral pressure resistance treatment, so that the phenomenon that the internal threads are broken due to extrusion deformation of a heavy object in the traditional cable is avoided, and the electricity utilization safety is ensured.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the utility model can be combined with each other without conflict;

and finally: the present invention is not limited to the above preferred embodiments, but rather, any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A flame retardant B1 grade flexible control cable comprising a conductor (10), characterized in that: the outside cladding of wire (10) has interior insulation glue film (5), the outside fixedly connected with outer insulation glue film (6) of interior insulation glue film (5), one side joint of outer insulation glue film (6) has central support (1), the opposite side joint of outer insulation glue film (6) has periphery support (7), the outside fixedly connected with band (2) of periphery support (7), the outside fixedly connected with inner sheath (8) of band (2), the outside fixedly connected with second shielding layer (3) of inner sheath (8), the first shielding layer (9) of outside fixedly connected with of second shielding layer (3), the outside fixedly connected with oversheath (4) of first shielding layer (9).

2. The flame retardant B1 grade flexible control cable according to claim 1, wherein: the lead (10) is made of an oxygen-free copper material.

3. The flame retardant B1 grade flexible control cable according to claim 1, wherein: the inner insulating glue layer (5) is made of polymethyl vinyl siloxane material.

4. The flame retardant B1 grade flexible control cable according to claim 1, wherein: the outer insulating glue layer (6) is made of a silicon rubber mixed material.

5. The flame retardant B1 grade flexible control cable according to claim 1, wherein: the outer sheath (4) is made of silicon rubber mixed sulfide.

6. The flame retardant B1 grade flexible control cable according to claim 1, wherein: the outer sheath (4) and the inner sheath (8) are made of the same material, and the second shielding layer (3) and the first shielding layer (9) are tinned copper wires.

7. The flame retardant B1 grade flexible control cable according to claim 1, wherein: the central support (1) is a regular triangle with three sides being one-sixth arcs, two a single side of the peripheral support (7) and one side of the central support (1) form a complete circle, and the peripheral support (7) and the central support (1) are provided with six sides which can be combined for use.

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