CN219534078U - Fireproof cable with high bending degree - Google Patents

Abstract

The utility model relates to the technical field of power cables, in particular to a fireproof cable with high bending degree, which comprises a flexible supporting rod, a wire core, an inner sheath, a first fireproof layer, a fluid layer, a second fireproof layer and an outer sheath from inside to outside. According to the utility model, under the condition that the square number of the wire core is unchanged, the diameter of a single wire core is as small as possible, and the flexible support rod is arranged in the cable, so that the high bending performance of the cable is improved; simultaneously, the inside first flame retardant coating, fluid layer, the second flame retardant coating that set up of cable realizes the cable high fire behavior.

Description

Fireproof cable with high bending degree

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a fireproof cable with high bending degree.

Background

Most of cables existing in the current market are high in bending radius, are not beneficial to installation and laying of the cables, have poor fireproof effect, can only delay the time for a cable insulating layer to burn through to a wire core layer, cannot effectively block external flame, and can influence the heat dissipation performance of the cables by setting excessive fireproof measures on the outside. Accordingly, a fireproof cable with high bending degree is proposed to solve the above problems.

Disclosure of Invention

The utility model provides a cable high-bending-degree fireproof cable which has high bending performance and good fireproof performance and can give consideration to the heat dissipation performance of the cable.

In order to achieve the above purpose, the utility model provides a fireproof cable with high bending degree, which sequentially comprises a flexible supporting rod, a wire core, an inner sheath, a first fireproof layer, a fluid layer, a second fireproof layer and an outer sheath from inside to outside, wherein the flexible supporting rod is used for supporting the wire core, the diameter of the wire core is less than or equal to 0.2mm, and cooling fluid is arranged in the fluid layer and used for carrying out heat absorption cooling on the first fireproof layer and the second fireproof layer.

Further, the fluid layer is filled with a silicone rubber hose, the cooling fluid flows in the silicone rubber hose, and the cooling fluid can be cooling water or liquid nitrogen.

Further, the flexible support rod is made of flame-retardant foam silicone rubber.

Further, the first fireproof layer comprises a flame retardant paint layer and a first fireproof rubber sleeve.

Further, the second fireproof layer is mineral insulation fireproof mud prepared by flame-retardant fireproof flexible filling materials and water.

Further, the inner sheath is made of synthetic mica tape insulating materials, and the outer sheath is made of flame-retardant glass filaments through braiding.

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

1) The cable bending performance is good. Under the condition that the square number of the cable inner wire core diameter is unchanged, the single wire core diameter is as small as possible so as to improve the bending property of the single wire core, and the bending stress of the wire core during bending at a small angle is reduced by arranging the flexible supporting rod inside the cable so as to increase the high bending property of the cable.

2) The cable has good fireproof performance. The first fireproof layer, the fluid layer and the second fireproof layer are arranged inside the cable, so that the high fireproof performance of the cable is realized.

3) The cable has good heat dissipation performance. Through the effect of cooling fluid in the fluid layer inside the cable, heat during overload use of the cable core can be effectively taken away, the heat dissipation performance of the cable is enhanced, and the service life of the cable is prolonged.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may have different arrangements as known in the art. Furthermore, in the drawings, like reference numerals designate identical or similar parts throughout the several views. Wherein:

fig. 1 is a schematic diagram of an overall structure of a fireproof cable with high bending degree according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a first fireproof layer according to an embodiment of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1-flexible support rod, 2-wire core, 3-inner sheath, 4-first fire-proof layer, 5-fluid layer, 6-second fire-proof layer, 7-outer sheath, 401-fire-proof paint layer, 402-first fire-proof gum cover.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is therefore to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless specified or indicated otherwise, the terms "connected," "fixed," and the like are to be construed broadly and, for example, "connected" may be either a fixed connection or a removable connection, or integrally connected, or electrically connected, or signally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in the present disclosure may be understood by those skilled in the art according to the specific circumstances.

Further, in the description of the present disclosure, it should be understood that the terms "upper", "lower", "inner", "outer", and the like, as described in the example embodiments of the present disclosure, are described with the angles shown in the drawings, and should not be construed as limiting the example embodiments of the present disclosure. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.

As shown in fig. 1, the embodiment of the utility model provides a fireproof cable with high bending degree, which comprises a flexible supporting rod 1, a wire core 2, an inner sheath 3, a first fireproof layer 4, a fluid layer 5, a second fireproof layer 6 and an outer sheath 7 from inside to outside, wherein the flexible supporting rod 1 is used for supporting the wire core 2, the diameter of the wire core 2 is less than or equal to 0.2mm, and cooling fluid is arranged in the fluid layer 5 and used for carrying out heat absorption cooling on the first fireproof layer 4 and the second fireproof layer 6. The flexible support rod 1 is made of flame-retardant foam silicone rubber, has good bending performance, and reduces bending stress of the wire core during bending at a small angle while supporting the wire core 2 so as to increase high bending performance of the cable. The finer the diameter of the wire core 2 is selected, the better the bending performance of the corresponding cable. The second fireproof layer 6 and the first fireproof layer 4 form a fireproof barrier of the cable in combination with the fluid layer 5, so that the fireproof performance of the cable is improved.

The fluid layer 5 is filled with a silicone rubber hose, the cooling fluid flows in the silicone rubber hose, and the cooling fluid can be cooling water or liquid nitrogen. The silica gel hose can be used as the inner wall and the outer wall of the fluid layer, and the cooling water and the fire liquid nitrogen can flow between the inner wall and the outer wall of the fluid layer 5. When the cable normally operates, the cable inner wire core 2 can be cooled down through heat transfer, so that the cable temperature is prevented from being too high; when the cable is in the combustion process or has open fire nearby the outside, the hydraulic cooling water or liquid nitrogen in the fluid layer 5 is used for taking away the heat conducted outside, so that the temperature of the cable is reduced, the cable is not blown when the cable has open fire nearby, and the normal work can be realized. When the cable is burnt uncontrollably by external fire, the burning time of the cable can be effectively delayed, and the effective power supply in the middle and front period of the fire is ensured.

As shown in fig. 2, the first fireproof layer 4 includes a flame retardant paint layer 401 and a first fireproof rubber sleeve 402. The flame retardant paint can be formed by adding various fireproof flame retardants, plasticizers and the like into the aqueous material of the tertiary acrylic emulsion, the first fireproof rubber sleeve 402 can be made of halogen-free flame retardant polyolefin, the halogen-free flame retardant polyolefin has good mechanical property and flame retardant property, and the safety of the cable in use can be improved.

The second fireproof layer 6 is mineral insulation fireproof mud prepared by flame-retardant fireproof flexible filling materials and water. The fireproof flame-retardant layer further enhances the fireproof flame-retardant performance of the cable.

The inner sheath 3 is made of synthetic mica tape insulating materials, and the outer sheath 7 is made of flame-retardant glass fiber in a braiding mode. The material selection further improves the flame retardant and fireproof performance of the cable.

The high-bending-degree fireproof cable provided by the utility model has a plurality of advantages, and mainly comprises the following components: 1) The cable bending performance is good. Under the condition that the square number of the diameters of the inner wire cores of the cable is unchanged, the diameters of the single wire cores are as small as possible so as to improve the bending property of the single wire cores, and the flexible supporting rods are arranged in the cable so as to reduce the bending stress of the wire cores during bending at a small angle and further improve the high bending property of the cable; 2) The cable has good fireproof performance. The first fireproof layer, the fluid layer and the second fireproof layer are arranged in the cable to realize high fireproof performance of the cable; 3) The cable has good heat dissipation performance. Through the effect of cooling fluid in the fluid layer inside the cable, heat during overload use of the cable core can be effectively taken away, the heat dissipation performance of the cable is enhanced, and the service life of the cable is prolonged.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. The specification and example embodiments are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (6)

1. A fire-resistant cable with high bending degree, which is characterized in that: the flexible support rod (1) is used for supporting the wire core (2), the diameter of the wire core (2) is smaller than or equal to 0.2mm, and cooling fluid is arranged in the fluid layer (5) and used for carrying out heat absorption and cooling on the first fireproof layer (4) and the second fireproof layer (6).

2. The high-bending-degree fireproof cable according to claim 1, wherein: the fluid layer (5) is filled with a silicone rubber hose, the cooling fluid flows in the silicone rubber hose, and the cooling fluid can be cooling water or liquid nitrogen.

3. The high-bending-degree fireproof cable according to claim 2, wherein: the flexible support rod (1) is made of flame-retardant foam silicone rubber.

4. A high bend fire resistant cable according to claim 3, wherein: the first fireproof layer (4) comprises a flame retardant paint layer (401) and a first fireproof rubber sleeve (402).

5. The high-bending-degree fireproof cable according to claim 4, wherein: the second fireproof layer (6) is mineral insulation fireproof mud prepared by flame-retardant fireproof flexible filling materials and water.

6. The high-bending-degree fireproof cable according to claim 5, wherein: the inner sheath (3) is made of synthetic mica tape insulating materials, and the outer sheath (7) is made of flame-retardant glass filaments through braiding.