CN217181869U - Fireproof cable - Google Patents

Abstract

The utility model provides a fireproof cable, which comprises a plurality of conductors, mica tapes covering the conductors and insulating layers covering the mica tapes, wherein hollow weight reducing pipes are arranged among the conductors, and filling layers are arranged between the weight reducing pipes and the insulating layers; the anti-collision device is characterized in that a plurality of support frames are arranged around the weight reducing pipe, the support frames are coated with a plurality of elastic ball layers, the inner sides of the elastic ball layers further comprise buffer columns, springs, adjusting blocks and support legs, the buffer columns are arranged on the inner side walls of the elastic ball layers, the springs are arranged under the top walls of the buffer columns, the adjusting blocks are arranged under the springs, one ends of the support legs are connected to the adjusting blocks, and the other ends of the support legs are connected to the support frames. The utility model discloses a cable has the weight reduction design to stable in structure is resistant buckling.

Description

Fireproof cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to fireproof cable.

Background

A cable is made up of one or more mutually insulated conductors and an outer insulating sheath, the conductors carrying power or information from one location to another, usually being rope-like cables made up of several or groups of conductors (at least two in each group) twisted together, each group being insulated from each other and usually twisted around a center, the whole being covered with a highly insulating covering. The cable has the characteristics of internal electrification and external insulation.

In order to improve the fireproof effect of the cable, fireproof mud is filled in the cable, and the weight of the cable is increased due to the internal filling, so that the cable is difficult to carry and erect; in order to reduce the weight of the cable, technicians often replace the filler with weight-reducing tubes within the cable while maintaining structural stability. The needs of laying on the spot, the cable often need be buckled and handled, but if the degree of buckling of cable too big often can lead to losing the damage of heavy pipe, influence its structure, consequently need a resistant cable of buckling urgently needed, solve the problem that subtracts the structure damage that heavy pipe buckles and arouse in laying process.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fireproof cable, its characteristics are that the cable has and subtracts heavy design to stable in structure is resistant buckling.

The technical scheme is as follows:

a fireproof cable comprises a plurality of conductors, mica tapes wrapping the conductors and insulating layers wrapping the mica tapes, wherein hollow weight reducing pipes are arranged among the conductors, and filling layers are arranged between the weight reducing pipes and the insulating layers; the anti-collision device is characterized in that a plurality of support frames are arranged around the weight reducing pipe, the support frames are coated with a plurality of elastic ball layers, the inner sides of the elastic ball layers further comprise buffer columns, springs, adjusting blocks and support legs, the buffer columns are arranged on the inner side walls of the elastic ball layers, the springs are arranged under the top walls of the buffer columns, the adjusting blocks are arranged under the springs, one ends of the support legs are connected to the adjusting blocks, and the other ends of the support legs are connected to the support frames.

Furthermore, a glass fiber protective belt is wrapped outside the filling layer.

Furthermore, the glass fiber protection belt is externally sleeved with a hydrophobic layer.

Furthermore, a flame-retardant protective sleeve is arranged outside the hydrophobic layer.

Further, the outer sleeve of the flame-retardant protective sleeve is provided with a wear-resistant layer.

Furthermore, the periphery of the filling layer is adhered to a glass fiber protective tape, and the glass fiber protective tape is fixedly connected with the inner wall of the hydrophobic layer.

Further, an aluminum tape layer is arranged between the mica tape and the color separation insulating layer, and the outer wall of the aluminum tape layer is fixedly connected with the color separation insulating layer.

Furthermore, the elastic balls are uniformly arranged in the elastic ball layer.

The utility model provides a beneficial effect is: through the design that the weight reducing pipe is matched with the fireproof mud, the fireproof performance is ensured while the position of each cable core conductor is fixed, the weight reducing pipe can change along with the integral deformation of the cable, the internal stability can be ensured, and the integral weight of the cable can be reduced; the weight reducing pipe is arranged through the elastic ball layer, the gap between the elastic balls can be adjusted according to the maximum bending amplitude and the minimum bending amplitude when the cable is laid, the gap between the elastic balls can be adjusted by increasing or reducing the number of the elastic balls, the buffer effect is achieved when the weight reducing pipe is bent through the arrangement of the buffer columns and the buffer springs, the rigid deformation of the support frame is reduced, the rigid breaking of the support frame is avoided, and the bending performance of the weight reducing pipe is better improved. The utility model discloses a cable has the weight reduction design to stable in structure is resistant buckling.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles, principles and effects of the invention.

Unless otherwise specified or defined, the same reference numerals in different figures refer to the same or similar features, and different reference numerals may be used for the same or similar features.

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

Fig. 2 is a schematic view of the weight-reducing structure of the present invention.

Description of reference numerals:

101. a conductor; 102. mica tapes; 103. an insulating layer; 104. a weight-reducing tube; 105. a support frame; 106. a layer of stretch balls; 107. a buffer column; 108. a spring; 109. an adjusting block; 201. a support leg; 202. a filling layer; 203. a glass fiber protective tape; 204. a hydrophobic layer; 205. a flame retardant protective layer; 206. a wear layer; 207. and (4) an aluminum strip layer.

Detailed Description

In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.

Unless specifically stated or otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In combination with the present technical solution's realistic scene, all technical and scientific terms used herein may also have meanings corresponding to the purpose of realizing the technical solution of the present invention.

As used herein, unless otherwise specified or defined, "first" and "second" … are used merely for name differentiation and do not denote any particular quantity or order. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.

Unless specifically stated or otherwise defined, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like as used herein refer to an orientation or positional relationship as shown in the drawings for convenience in describing the patent and in order to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting of the patent.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

As used herein, unless otherwise specified or defined, the terms "comprises," "comprising," and "including" are used interchangeably and refer to the term "comprising," and are used interchangeably and refer to the term "comprising," or "comprises," as used herein.

It is needless to say that technical contents or technical features which are contrary to the object of the present invention or clearly contradict each other should be excluded.

As shown in fig. 1 and 2, a fireproof cable includes a plurality of conductors 101, a mica tape 102 covering the conductors 101, and an insulating layer 103 covering the mica tape 102, wherein a hollow weight-reducing tube 104 is disposed between the conductors 101, and a filling layer 202 is disposed between the weight-reducing tube 104 and the insulating layer 103; the weight reducing pipe 104 is provided with a plurality of support frames 105, the support frames 105 are wrapped with an elastic ball layer 106, elastic balls are uniformly arranged in the elastic ball layer 106, the inner side of the elastic ball layer 106 further comprises a buffer column 107, a spring 108, an adjusting block 109 and a support leg 201, the buffer column 107 is arranged on the inner side wall of the elastic ball layer 106, the spring 108 is arranged below the top wall of the buffer column 107, the adjusting block 109 is arranged below the spring 108, one end of the support leg 201 is connected to the adjusting block 109, and the other end of the support leg 201 is connected to the support frames 105.

Through the design that the weight reducing pipe 104 is matched with the fireproof mud, the position of each cable core conductor 101 is fixed, and meanwhile, the fireproof performance is guaranteed, the weight reducing pipe 104 can change along with the overall deformation of the cable, and the overall weight of the cable can be reduced while the internal stability is guaranteed; the weight reducing pipe 104 is arranged through the elastic ball layer 106, gaps among the elastic balls can be adjusted according to the maximum bending amplitude and the minimum bending amplitude when cables are laid, the purpose of adjusting the gaps among the elastic balls is achieved by increasing or reducing the number of the elastic balls, the buffer column 107 and the buffer spring 108 are arranged, the buffer effect is achieved when bending is conducted, hard deformation of the support frame 105 is reduced, hard breaking of the support frame 105 is avoided, and the bending performance of the weight reducing pipe 104 is well improved. The utility model discloses a cable has the weight reduction design to stable in structure is resistant buckling.

The outer package of filling layer 202 has glass fiber protection area 203, glass fiber protection area 203 overcoat is equipped with hydrophobic layer 204, and hydrophobic layer 204 is equipped with fire-retardant protective sheath outward, fire-retardant protective sheath overcoat is equipped with wearing layer 206. The filling layer 202 is made of fire-proof mud, the periphery of the fire-proof mud is adhered to the glass fiber protective belt 203, and the glass fiber protective belt 203 is fixedly connected with the inner wall of the hydrophobic layer 204. Guarantee its water-proof effects through hydrophobic layer 204, and hydrophobic layer 204 sets up in the skin, and long-term the use can not be because of the heat transfer that cable core conductor 101 produced to this layer, avoids hydrophobic layer 204 to be heated rotten and lead to hydrophobic layer 204 effect reduction that blocks water.

An aluminum tape layer 207 is arranged between the mica tape 102 and the insulating layer 103, and the outer wall of the aluminum tape layer 207 is fixedly connected with the color separation insulating layer 103. The aluminum tape layer 207 serves as a barrier layer to ensure its hermeticity.

The above embodiments are intended to be illustrative, and should not be construed as limiting the scope of the invention, and the technical solutions, objects and effects of the present invention are described in full herein.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims (8)

1. A fireproof cable is characterized by comprising a plurality of conductors, mica tapes wrapping the conductors and insulating layers wrapping the mica tapes, wherein hollow weight reducing pipes are arranged among the conductors, and filling layers are arranged between the weight reducing pipes and the insulating layers; the anti-collision device is characterized in that a plurality of support frames are arranged around the weight reducing pipe, the support frames are coated with a plurality of elastic ball layers, the inner sides of the elastic ball layers further comprise buffer columns, springs, adjusting blocks and support legs, the buffer columns are arranged on the inner side walls of the elastic ball layers, the springs are arranged under the top walls of the buffer columns, the adjusting blocks are arranged under the springs, one ends of the support legs are connected to the adjusting blocks, and the other ends of the support legs are connected to the support frames.

2. A fire-resistant cable in accordance with claim 1, wherein the filler layer is wrapped with a protective tape of glass fiber.

3. A fire-resistant cable according to claim 2, wherein the glass fiber protective tape is provided with a hydrophobic layer.

4. A fire-resistant cable according to claim 3, wherein the hydrophobic layer is provided with a fire-retardant protective sheath.

5. A fire-resistant cable in accordance with claim 4, wherein said fire-retardant protective sheath is provided with a wear layer.

6. The fireproof cable of claim 4, wherein the periphery of the filling layer is adhered to a glass fiber protective tape, and the glass fiber protective tape is fixedly connected with the inner wall of the hydrophobic layer.

7. A fire protection cable according to any one of claims 1 to 5, wherein an aluminium tape layer is provided between the mica tape and the colour separation insulating layer, and the outer wall of the aluminium tape layer is fixedly connected with the colour separation insulating layer.

8. A fire-resistant cable according to any one of claims 1 to 5, wherein the resilient balls are uniformly provided in the resilient ball layer.

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