CN216528086U - Flexible fire-resistant low pressure variable frequency cable - Google Patents

Abstract

The utility model relates to the technical field of cables, and discloses a flexible fire-resistant low-voltage variable-frequency cable which comprises an insulating layer, wherein a fire-resistant layer is fixedly connected to the inner wall of the fire-resistant layer, a fire-resistant coating is fixedly connected to the inner wall of the fire-resistant layer, a supporting cover is fixedly connected to the inner wall of the fire-resistant coating, a protective layer is fixedly connected to the inner wall of the supporting cover, and a conductor is fixedly connected to the inner wall of the protective layer. The utility model has the following advantages and effects: the protective layer wraps up the outer surface of the conductor, the supporting cover has elasticity, cut apart the protective layer, prevent that inside conductor can take place the winding, it fills in the space between supporting cover and the fire protection coating to support the foam, it is more stable to make the supporting cover, fire protection coating and fire-retardant layer, can the carbonization form protective layer when meetting fire, the combustion degree of flame retardant coating slow down the burning source, the spring is connected flame retardant coating and insulating layer, the spring receives the extrusion shrink when crooked, increase the pliability, can damage inside conductor when avoiding crooked.

Description

Flexible fire-resistant low pressure variable frequency cable

Technical Field

The utility model relates to the technical field of cables, in particular to a flexible fire-resistant low-voltage variable frequency cable.

Background

The cable has poor flame-retardant and fire-resistant performance, so that the smoke light transmittance is too low and toxic gas is released to intensify the disaster, and finally huge personnel and property losses are caused. The flame-retardant fire-resistant low-voltage power cable produced by the prior art has a plurality of defects, and the traditional fire-resistant flame-retardant low-voltage power cable has the following problems: 1. the material has poor self-performance, so that the insulating property and the mechanical property are poor; 2. the flexibility is poor; 3. the fire resistance is poor.

In the prior art, chinese patent publication No. CN213070679U discloses a flexible fire-resistant cable, which belongs to the technical field of cables, and the technical scheme thereof includes an alumina fiber layer and a polyamide fiber layer, wherein an outer sidewall of the polyamide fiber layer is fixedly connected with a sheath, and an outer sidewall of the sheath is fixedly connected with a corrosion-resistant layer; have better heat-resisting stability, its heat conductivity is low, but this utility model when the in-service use, overall structure is fairly simple, and the protectiveness to inside may be less strong, and the pliability of whole cable is lower, consequently needs a flexible fire-resistant low voltage variable frequency cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a flexible fire-resistant low-voltage variable frequency cable which has the effects of high fire resistance and high overall flexibility.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides a flexible fire-resistant low voltage variable frequency cable, includes the insulating layer, the inner wall fixedly connected with spring of insulating layer, the one end fixedly connected with flame retardant coating of spring, the fire-retardant layer of inner wall fixedly connected with of flame retardant coating, the inner wall fixedly connected with fire protection coating on fire protection coating, the inner wall fixedly connected with of fire protection coating supports the cover, the outer fixed surface of support cover is connected with the support foam, the inner wall fixedly connected with protective layer of support cover, the inner wall fixedly connected with conductor of protective layer.

Through adopting above-mentioned technical scheme, the protective layer wraps up the conductor surface, it is elastic to support the cover, cut apart the protective layer, prevent that inside conductor can take place the winding, it fills in the space between support cover and the fire protection coating to support the foam, it is more stable to make the support cover, fire protection coating and fire-retardant layer, can the carbonization form protective layer when meetting the fire, isolated fire source, the combustion degree of fire source is slowed down to the flame retardant coating, the spring is connected flame retardant coating and insulating layer, the spring receives the extrusion shrink when crooked, increase the pliability, can damage inside conductor when avoiding crooked.

The utility model is further provided with: the outer surface of the insulating layer is fixedly connected with a waterproof layer, and the inside of the waterproof layer is provided with an aperture.

Through adopting above-mentioned technical scheme, the waterproof layer isolated water source, and the quantity in aperture is a plurality of, and the annular distributes inside the waterproof layer.

The utility model is further provided with: the inner wall of the aperture is fixedly connected with an elastic strut, and the inner part of the elastic strut is fixedly connected with a supporting bone.

Through adopting above-mentioned technical scheme, the inside in aperture is worn to the elastic support post, and the texture is comparatively soft, supports the bone as supporting.

The utility model is further provided with: the outer fixed surface of waterproof layer is connected with the skid resistant course, the outer fixed surface of skid resistant course is connected with the wearing layer.

Through adopting above-mentioned technical scheme, the skid resistant course increases the fastness between wearing layer and the waterproof layer, prevents to produce the layering and drops.

The utility model is further provided with: the outer surface of the anti-skid layer is fixedly connected with a bulge, and a cavity is reserved between the wear-resistant layer and the bulge.

Through adopting above-mentioned technical scheme, the cable can be extruded between the cavity when crooked, increases the elasticity of cable.

The utility model is further provided with: the outer fixed surface of wearing layer is connected with dull polish granule, the outer fixed surface of dull polish granule is connected with the protective sheath.

Through adopting above-mentioned technical scheme, dull polish granule is connected protective sheath and wearing layer, makes protective sheath and internal connection inseparable, is difficult for droing and receives external damage.

The utility model has the beneficial effects that:

1. according to the utility model, through the matching arrangement of the insulating layer, the spring, the fire-resistant layer, the flame-retardant layer, the fireproof coating, the supporting cover, the supporting foam and the conductor, when the device is used, the protective layer wraps the outer surface of the conductor, the supporting cover has elasticity and is divided, the inner conductor is prevented from being wound, the supporting foam is filled in a gap between the supporting cover and the fireproof coating, so that the supporting cover is more stable, the fireproof coating and the flame-retardant layer can be carbonized to form the protective layer when encountering fire to isolate a fire source, the fire-resistant layer slows down the combustion degree of the fire source, the spring connects the fire-resistant layer and the insulating layer, the spring is extruded and contracted when being bent, the flexibility is increased, and the inner conductor is prevented from being damaged when being bent.

2. According to the utility model, through the matching arrangement of the waterproof layer, the pore diameter, the elastic support columns, the support ribs, the anti-slip layer, the wear-resistant layer, the bulges, the cavities, the abrasive particles and the protective sleeve, when the device is used, the waterproof layer is isolated from a water source, the number of the pore diameters is a plurality of, the pores are annularly distributed in the waterproof layer, the elastic support columns are worn in the pore diameters, the texture is soft, the support ribs are used as supports, the anti-slip layer increases the firmness between the wear-resistant layer and the waterproof layer, the layered falling is prevented, the cable can be extruded between the cavities when being bent, the elasticity of the cable is increased, the abrasive particles connect the protective sleeve and the wear-resistant layer, the protective sleeve is tightly connected with the interior, and the cable is not easy to fall off and is damaged by the outside.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of an explosive structure according to the present invention;

FIG. 2 is a schematic view of a support housing according to the present invention;

FIG. 3 is a schematic view of a waterproof layer structure according to the present invention;

fig. 4 is a schematic view of a protective cover according to the present invention.

In the figure, 1, an insulating layer; 2. a spring; 3. a refractory layer; 4. a flame retardant layer; 5. a fire-retardant coating; 6. a support housing; 7. supporting the foam; 8. a protective layer; 9. a conductor; 10. a waterproof layer; 11. the diameter of the hole; 12. an elastic support; 13. supporting the bone; 14. an anti-slip layer; 15. a wear layer; 16. a protrusion; 17. a cavity; 18. sanding particles; 19. and (6) a protective sleeve.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Referring to fig. 1-4, a flexible fire-resistant low-voltage variable frequency cable comprises an insulating layer 1, a spring 2 is fixedly connected to the inner wall of the insulating layer 1, a fire-resistant layer 3 is fixedly connected to one end of the spring 2, a fire-resistant layer 4 is fixedly connected to the inner wall of the fire-resistant layer 3, a fire-resistant coating 5 is fixedly connected to the inner wall of the fire-resistant layer 4, a supporting cover 6 is fixedly connected to the inner wall of the fire-resistant coating 5, supporting foam 7 is fixedly connected to the outer surface of the supporting cover 6, a protective layer 8 is fixedly connected to the inner wall of the protective layer 8, a conductor 9 is wrapped on the outer surface of the conductor 9 by the protective layer 8, the supporting cover 6 has elasticity, the protective layer 8 is divided to prevent the inner conductor 9 from being wound, the supporting foam 7 is filled in a gap between the supporting cover 6 and the fire-resistant coating 5, so that the supporting cover 6 is more stable, the fire-resistant coating 5 and the fire-resistant layer 4, when encountering fire, the fireproof layer 3 can be carbonized to form a protective layer to isolate the fire source, the fireproof layer 3 slows down the combustion degree of the fire source, the spring 2 connects the fireproof layer 3 with the insulating layer 1, the spring 2 is extruded and contracted to increase flexibility when bending, the inner conductor 9 can be prevented from being damaged when bending, the outer surface of the insulating layer 1 is fixedly connected with a waterproof layer 10, the inside of the waterproof layer 10 is provided with a plurality of apertures 11, the waterproof layer 10 isolates a water source, the number of the apertures 11 is a plurality of apertures 11 which are annularly distributed in the waterproof layer 10, the inner wall of the aperture 11 is fixedly connected with an elastic strut 12, the inside of the elastic strut 12 is fixedly connected with a support bone 13, the elastic strut 12 is worn in the aperture 11, the texture is soft, the support bone 13 is used as a support, the outer surface of the waterproof layer 10 is fixedly connected with an antiskid layer 14, the outer surface of the antiskid layer 14 is fixedly connected with a wear layer 15, the antiskid layer 14 increases the firmness between the wear layer 15 and the waterproof layer 10, prevent to produce the layering and drop, the surface fixedly connected with of skid resistant course 14 is protruding 16, leave cavity 17 between wearing layer 15 and the arch 16, the cable can be extruded when crooked between cavity 17, increase the elasticity of cable, the surface fixedly connected with dull polish granule 18 of wearing layer 15, the surface fixedly connected with protective sheath 19 of dull polish granule 18, dull polish granule 18 is connected protective sheath 19 and wearing layer 15, it is inseparable to make protective sheath 19 and internal connection, it receives external damage not easily to drop.

According to the utility model, through the matching arrangement of the insulating layer 1, the spring 2, the fire-resistant layer 3, the flame-retardant layer 4, the fireproof coating 5, the supporting cover 6, the supporting foam 7 and the protective layer 8 and the conductor 9, when the device is used, the protective layer 8 wraps the outer surface of the conductor 9, the supporting cover 6 has elasticity, the protective layer 8 is divided to prevent the inner conductor 9 from winding, the supporting foam 7 is filled in a gap between the supporting cover 6 and the fireproof coating 5 to enable the supporting cover 6 to be more stable, the fireproof coating 5 and the flame-retardant layer 4 can be carbonized to form the protective layer when encountering fire to isolate a fire source, the combustion degree of the fire source is slowed down by the fire-resistant layer 3, the spring 2 is connected with the insulating layer 1, the spring 2 is extruded and contracted when being bent to increase the flexibility, the inner conductor 9 is prevented from being damaged when being bent, and the waterproof layer 10 and the pore diameter 11 are used for preventing the inner conductor 9 from being bent, Elastic support 12, support bone 13, skid resistant course 14, wearing layer 15, it is protruding 16, cavity 17, cooperation setting between dull polish granule 18 and the protective sheath 19, can make this device when using, the isolated water source of waterproof layer 10, the quantity of aperture 11 is a plurality of, the annular distributes inside waterproof layer 10, elastic support 12 wears the inside in aperture 11, the texture is comparatively soft, support bone 13 as supporting, skid resistant course 14 increases the fastness between wearing layer 15 and the waterproof layer 10, prevent to produce the layering and drop, the cable can be extrudeed between cavity 17 when the bending, increase the elasticity of cable, dull polish granule 18 is connected protective sheath 19 and wearing layer 15, make protective sheath 19 inseparable with internal connection, be difficult for droing and receive external damage.

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 (6)

1. The utility model provides a flexible fire-resistant low voltage variable frequency cable, includes insulating layer (1), its characterized in that: the insulation layer comprises an insulation layer (1), a spring (2) fixedly connected to the inner wall of the insulation layer (1), a fire-retardant layer (3) fixedly connected to one end of the spring (2), a fire-retardant layer (4) fixedly connected to the inner wall of the fire-retardant layer (4), a fire-retardant coating (5) fixedly connected to the inner wall of the fire-retardant layer (5), a support cover (6) fixedly connected to the inner wall of the fire-retardant coating (5), support foam (7) fixedly connected to the outer surface of the support cover (6), a protective layer (8) fixedly connected to the inner wall of the support cover (6), and a conductor (9) fixedly connected to the inner wall of the protective layer (8).

2. The flexible fire-resistant low-voltage variable frequency cable according to claim 1, wherein: the outer surface of the insulating layer (1) is fixedly connected with a waterproof layer (10), and the inside of the waterproof layer (10) is provided with an aperture (11).

3. The flexible fire-resistant low-voltage variable frequency cable according to claim 2, wherein: the inner wall of the aperture (11) is fixedly connected with an elastic strut (12), and the inner part of the elastic strut (12) is fixedly connected with a supporting bone (13).

4. The flexible fire-resistant low-voltage variable frequency cable according to claim 2, wherein: the outer surface of the waterproof layer (10) is fixedly connected with an anti-skid layer (14), and the outer surface of the anti-skid layer (14) is fixedly connected with a wear-resistant layer (15).

5. The flexible fire-resistant low-voltage variable frequency cable according to claim 4, wherein: the outer surface of the anti-skid layer (14) is fixedly connected with a bulge (16), and a cavity (17) is reserved between the wear-resistant layer (15) and the bulge (16).

6. The flexible fire-resistant low-voltage variable frequency cable according to claim 4, wherein: the outer fixed surface of wearing layer (15) is connected with dull polish granule (18), the outer fixed surface of dull polish granule (18) is connected with protective sheath (19).

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