CN216817934U

CN216817934U - Cross-linked polyethylene insulated power cable with high flame retardant property

Info

Publication number: CN216817934U
Application number: CN202123350747.4U
Authority: CN
Inventors: 江英; 马峥嵘; 张广发
Original assignee: Wuxi Kaifeng Cable Co ltd
Current assignee: Wuxi Kaifeng Cable Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-24
Anticipated expiration: 2031-12-28

Abstract

The utility model provides a crosslinked polyethylene insulated power cable with high flame retardant property, which belongs to the technical field of flame retardant cables and aims to solve the problems that the existing cable has no fire extinguishing function when encountering fire, can not strive for time for people to extinguish the fire, the toughness of the outer layer of the cable is reduced under the low-temperature condition, and the outer sleeve of the cable is easy to crack when the cable is repeatedly pulled, and comprises an inner core of the cable; the cable inner core is of a cylindrical structure, a through hole is formed in the cable inner core, a cable is mounted in the through hole, and the through hole is arranged in an annular structure. According to the fire-extinguishing protective sleeve, the fire-retardant cavity is arranged inside the protective sleeve, so that after the outer end of the protective sleeve is combusted, the fire-retardant cavity is damaged and broken, dry powder inside the fire-retardant cavity can burst out, a fire-extinguishing effect is achieved, the spreading speed of fire can be slowed down, and time is won for fire-extinguishing operation of people.

Description

Cross-linked polyethylene insulated power cable with high flame retardant property

Technical Field

The utility model belongs to the technical field of flame-retardant cables, and particularly relates to a cross-linked polyethylene insulated power cable with high flame-retardant performance.

Background

The cable is an electric energy or signal transmission device, usually comprises several or several groups of wires, has wide application in our production and life, and needs certain flame retardant property when the cable is used in a fire disaster place.

Based on the aforesaid, current cable in use does not have the function of putting out a fire when meetting the conflagration, can not give people's the time of striving for of putting out a fire, and northern area winter is colder simultaneously, and the outer toughness of cable reduces, and when the cable was dragged repeatedly, the cable overcoat broke easily, and finally, the cable outer end is more smooth, and the phenomenon of skidding appears easily in the workman when setting up the hand.

In view of the above, the present invention provides a crosslinked polyethylene insulated power cable with high flame retardant property, which is developed and improved in view of the existing structure and defects, so as to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a crosslinked polyethylene insulated power cable with high flame retardant property, which aims to solve the problems that the existing cable has no fire extinguishing function when encountering fire, people cannot fight for time for fire extinguishing, the toughness of the outer layer of the cable is reduced under low temperature conditions, the outer sleeve of the cable is easy to crack when the cable is repeatedly pulled, the outer end of the cable is smooth, and the hand of a worker is easy to slip when erecting the cable.

The utility model relates to a purpose and an effect of a crosslinked polyethylene insulated power cable with high flame retardant property, which are achieved by the following specific technical means: a cross-linked polyethylene insulated power cable with high flame retardant properties comprises a cable inner core;

the cable inner core is of a cylindrical structure, a through hole is formed in the cable inner core, a cable is mounted in the through hole, and the through hole is arranged in an annular structure;

the cable core is sleeved on the outer end face of the cable core, the inner end face of the cable core is attached to the outer end face of the cable core, and an elastic mechanism is arranged inside the flexible layer;

the protective sleeve is sleeved on the outer end face of the toughness layer, and the inner end face of the protective sleeve is attached to the inner end face of the toughness layer.

Further, the thickness of the toughness layer is half of that of the protective sleeve.

Further, the elastic mechanism includes: the elastic device comprises six first elastic wires, wherein the first elastic wires are linear and are arranged in an annular structure; the second elastic wire is arranged in an annular structure and is crossed with the first elastic wire.

Furthermore, the outer end face of the protecting sleeve is provided with a friction ball, and the main body of the friction ball is of a hemispherical structure.

Furthermore, fire-retardant chamber has been seted up to the inside of lag, and fire-retardant chamber is the annular and evenly sets up the inside at the lag.

Furthermore, the main body of the flame-retardant cavity is of a rectangular structure, and dry powder is filled in the flame-retardant cavity.

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

according to the utility model, the first elastic wire and the second elastic wire are arranged in the toughness layer, and the first elastic wire and the second elastic wire are arranged in a cross manner, so that the toughness of the cable can be increased, the anti-pulling capacity of the cable can be improved, and the service life of the cable can be prolonged.

In addition, the outer terminal surface of cable protection cover is slick and sly curved surface for the frictional force between workman's hand and the cable protection cover is less, the phenomenon that skids appears easily, and the workman's of not being convenient for transport erects, evenly installs the setting of friction ball through the outer terminal surface of lag, can increase and the cable protection cover between the frictional force, the workman of being convenient for erects the cable.

In addition, when meetting the conflagration, the outer end of lag is after the burning, and fire-retardant chamber can be impaired to break, and the dry powder of fire-retardant intracavity portion can burst out, plays the effect of putting out a fire, can slow down the speed of stretching of conflagration to strive for the time for people's the operation of putting out a fire.

Drawings

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

Fig. 2 is a schematic cross-sectional structure of the cable of the present invention.

Fig. 3 is a schematic view of the enlarged structure of the part a in fig. 2 according to the present invention.

Fig. 4 is an exploded view of the integrated device of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. an inner core of the cable; 101. a through hole; 2. a ductile layer; 201. a first elastic thread; 202. a second elastic thread; 3. a protective sleeve; 301. a flame retardant cavity; 4. and rubbing the balls.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 4:

the utility model provides a crosslinked polyethylene insulated power cable with high flame retardant property, which comprises a cable inner core 1;

the cable inner core 1 is of a cylindrical structure, a through hole 101 is formed in the cable inner core 1, a cable is mounted in the through hole 101, and the through hole 101 is arranged in an annular structure;

the cable core comprises a flexible layer 2, wherein the flexible layer 2 is sleeved on the outer end face of the cable core 1, the inner end face of the flexible layer 2 is attached to the outer end face of the cable core 1, and an elastic mechanism is arranged inside the flexible layer 2;

lag 3, the outer terminal surface at toughness layer 2 of cup jointing of lag 3, the laminating of the inner terminal surface on lag 3 and toughness layer 2, the thickness on toughness layer 2 is half of lag 3 thickness.

Wherein, elastic mechanism includes: six first elastic threads 201 are arranged, the first elastic threads 201 are linear, and the first elastic threads 201 are arranged in an annular structure; second elastic wire 202, second elastic wire 202 is the loop configuration setting, and second elastic wire 202 is the cross with first elastic wire 201 and intersects the form, in the use, the cable is when erectting, need be to the pulling of cable relapse, the cable is at the in-process that lasts to pull, lead to the inside impaired of cable easily, be the setting of cross through first elastic wire 201 and second elastic wire 202, can increase cable toughness, improve the anti-tensile ability of dragging of cable, the life of extension cable.

Wherein, friction ball 4 is installed to the outer terminal surface of lag 3, friction ball 4 main part is half spherical structure, in using, the workman is when carrying the cable, because the outer terminal surface of cable protection cover 3 is slick and sly curved surface, make the frictional force between workman's hand and the cable protection cover 3 less, the phenomenon of skidding appears easily, workman's the transport of not being convenient for is erect, evenly install the setting of friction ball 4 through the outer terminal surface of lag 3, can increase and the cable protection cover 3 between the frictional force, the workman of being convenient for erects the cable.

Wherein, fire-retardant chamber 301 has been seted up to the inside of lag 3, fire-retardant chamber 301 is the inside that the annular was evenly seted up at lag 3, fire-retardant chamber 301 main part is the rectangle structure, and the inside packing in fire-retardant chamber 301 has dry powder, in using, when meetting the conflagration, lag 3's outer end is after the burning, fire-retardant chamber 301 can be impaired to break, the inside dry powder in fire-retardant chamber 301 can burst out, play the effect of putting out a fire, can slow down the speed of stretching of conflagration, thereby strive for the time for people's the operation of putting out a fire.

The specific use mode and function of the embodiment are as follows:

in the utility model, when a cable is erected, the cable needs to be repeatedly pulled, the cable is easily damaged in the continuous pulling process, the toughness of the cable can be increased by arranging the first elastic wire 201 and the second elastic wire 202 in a cross manner, the anti-pulling capacity of the cable is improved, the service life of the cable is prolonged, meanwhile, the outer end surface of the cable protection sleeve 3 is a smooth curved surface, so that the friction between a hand of a worker and the cable protection sleeve 3 is small, the slipping phenomenon easily occurs, the cable protection sleeve is not convenient for the worker to carry and erect, the friction between the cable protection sleeve 3 and the cable protection sleeve 3 can be increased by uniformly arranging the friction balls 4 on the outer end surface of the protection sleeve 3, the worker can conveniently erect the cable, when a fire occurs, the outer end of the protection sleeve 3 is burnt, the flame-retardant cavity 301 can be damaged and broken, and dry powder in the flame-retardant cavity 301 can burst out, the fire extinguishing device has the function of extinguishing fire, and can slow down the spreading speed of fire, thereby striving for time for fire extinguishing operation of people.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a crosslinked polyethylene insulated power cable with high flame retardant property which characterized in that: comprises a cable inner core (1); the cable inner core (1) is of a cylindrical structure, a through hole (101) is formed in the cable inner core (1), a cable is installed in the through hole (101), and the through hole (101) is arranged in an annular structure; the cable core comprises a toughness layer (2), wherein the toughness layer (2) is sleeved on the outer end face of the cable core (1), the inner end face of the toughness layer (2) is attached to the outer end face of the cable core (1), and an elastic mechanism is arranged inside the toughness layer (2); the protective sleeve comprises a protective sleeve (3), wherein the protective sleeve (3) is sleeved on the outer end face of the toughness layer (2), and the inner end face of the protective sleeve (3) is attached to the inner end face of the toughness layer (2).

2. The insulated power cable of crosslinked polyethylene having high flame retardant properties according to claim 1, wherein: the thickness of the toughness layer (2) is half of that of the protective sleeve (3).

3. The insulated power cable of crosslinked polyethylene having high flame retardant properties according to claim 1, wherein: the elastic mechanism includes:

the elastic yarn comprises six first elastic yarns (201), wherein the first elastic yarns (201) are linear, and the first elastic yarns (201) are arranged in an annular structure;

the second elastic wire (202), the second elastic wire (202) is the annular structure setting, and second elastic wire (202) is the cross with first elastic wire (201).

4. The insulated power cable of crosslinked polyethylene having high flame retardant properties according to claim 1, wherein: the outer end face of the protecting sleeve (3) is provided with a friction ball (4), and the main body of the friction ball (4) is of a hemispherical structure.

5. The insulated power cable of crosslinked polyethylene having high flame retardant properties according to claim 1, wherein: fire-retardant chamber (301) have been seted up to the inside of lag (3), and fire-retardant chamber (301) are the inside that the annular was evenly seted up in lag (3).

6. The insulated power cable of cross-linked polyethylene with high flame retardant property according to claim 5, wherein: the main body of the flame-retardant cavity (301) is of a rectangular structure, and dry powder is filled in the flame-retardant cavity (301).