CN216817923U

CN216817923U - Crosslinked polyethylene insulated flame-retardant power cable

Info

Publication number: CN216817923U
Application number: CN202220344995.3U
Authority: CN
Inventors: 徐广宇; 宗璇; 陈鹏
Original assignee: Jiangsu Yujiu Cable Technology Co ltd
Current assignee: Jiangsu Yujiu Cable Technology Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-06-24
Anticipated expiration: 2032-02-21

Abstract

The utility model provides a crosslinked polyethylene insulated flame-retardant power cable, which relates to the technical field of cables and aims to solve the problems that in the existing cable, because the material wrapping a lead is a crosslinked polyethylene material, the lead needs to be protected to prevent loss, and if a limiting disc is not arranged at the port of the cable, crosslinked polyethylene particles are lost, so that the cable cannot be flame-retardant, and the cable comprises an inner layer; the middle part of the inner layer is provided with a main line hole which penetrates through the inner layer; the outer end of the inner layer outer annular side wall is wrapped with a protective layer; inner ring grooves are respectively formed in two ends of the side wall of the inner cavity of the protective layer; three block grooves are formed in the two inner ring grooves; the outer side wall of the protective layer is wrapped with a shell; and limiting discs are respectively arranged at the two inner ring grooves. The polyethylene in the utility model can flow out from the openings at the two ends of the sheath, and the limiting disc arranged on the cable has the function of preventing loss, so as to ensure that the polyethylene in the cable is sufficient for flame retardance.

Description

Crosslinked polyethylene insulated flame-retardant power cable

Technical Field

The utility model relates to the technical field of cables, in particular to a crosslinked polyethylene insulated flame-retardant power cable.

Background

The flame-retardant wire and cable has special flame retardance, low smoke generation and toxic smoke suppression performance, and in case of fire, the common polyvinyl chloride insulated wire, the thick black smoke and the hydrochloric acid gas of toxic gas damage the fatality and hinder the rescue action.

In the conventional cable, because the material for wrapping the wires is the cross-linked polyethylene material, the wires need to be protected to prevent loss, and if a limiting disc is not installed at the port of the cable, cross-linked polyethylene particles are lost, so that the cable cannot be flame-retardant.

Therefore, in view of the above, research and improvement are made for the existing structure and defects, and a crosslinked polyethylene insulated flame-retardant power cable is provided in order 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 flame-retardant power cable, which aims to solve the problems that in the existing cable, because the material wrapping the lead is a crosslinked polyethylene material, the cable needs to be protected to prevent loss, and if a limiting disc is not installed at the port of the cable, crosslinked polyethylene particles are lost, so that the cable cannot be flame-retardant.

The utility model relates to a purpose and an effect of a crosslinked polyethylene insulated flame-retardant power cable, which are achieved by the following specific technical means:

a cross-linked polyethylene insulated flame-retardant power cable comprises an inner layer; the middle part of the inner layer is provided with a main line hole which penetrates through the inner layer; the outer end of the inner layer outer annular side wall is wrapped with a protective layer; inner ring grooves are respectively formed in two ends of the side wall of the inner cavity of the protective layer; three block grooves are formed in the two inner ring grooves;

the outer side wall of the protective layer is wrapped with a shell; two limit dish is installed respectively to interior annular groove department, two there are three inserted blocks of fixed mounting respectively on the outer annular lateral wall of limit dish, two the even fine wire hole B that runs through of seting up in edge department of limit dish, two install six on the inner annular lateral wall of limit dish respectively and insert the post, six insert the post and install respectively and inject in the blind hole.

Furthermore, the blind hole has all been seted up at the both ends of the outer annular side wall of inlayer, the parcel has cylindric structure's polyethylene on the outer annular side wall of inlayer.

Furthermore, the edge of the polyethylene is uniformly provided with a penetrating thin line hole A, a penetrating thin cylinder is inserted into the thin line hole A, and two ends of the thin cylinder are respectively and fixedly sleeved with a sealing ring.

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

the polyethylene parcel has fire-retardant effect on the lateral wall of inlayer, and the lateral wall of sealing ring is hugged closely mutually with the lateral wall of restriction dish, and polyethylene just can't flow from the lateral wall department of thin section of thick bamboo, and when polyethylene received the extrusion or collided, the oral area outflow at sheath both ends can be followed to polyethylene, and the installation restriction dish has the effect that prevents the loss on the cable to it is sufficient to guarantee the polyethylene in the cable conductor, carries out fire-retardant.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic view of the left front upper axial view of the present invention.

FIG. 2 is a partially disassembled view of the sheath and limiting plate of the present invention.

Fig. 3 is a schematic view of the disassembled inner layer of the present invention.

Fig. 4 is a schematic diagram of an explosive structure of the present invention.

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

1. an inner layer; 101. blind holes; 102. polyethylene; 103. a fine wire hole A; 104. a thin cylinder; 105. a seal ring; 2. a protective layer; 201. an inner ring groove; 202. a block groove; 203. a housing; 3. a confinement plate; 301. inserting a block; 302. a string hole B; 303. and (5) inserting the column.

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.

The embodiment is as follows:

as shown in figures 1 to 4:

the utility model provides a crosslinked polyethylene insulated flame-retardant power cable, which comprises an inner layer 1; the middle part of the inner layer 1 is provided with a main line hole which penetrates through; the main conductor penetrates through the main thread hole, and the outer end of the outer annular side wall of the inner layer 1 is wrapped with a protective layer 2; two ends of the side wall of the inner cavity of the protective layer 2 are respectively provided with an inner ring groove 201; the edge of the limiting disc 3 is clamped at the inner ring grooves 201, and three block grooves 202 are formed in the two inner ring grooves 201; the outer side wall of the sheath 2 is wrapped with a shell 203; the two inner ring grooves 201 are respectively provided with limiting discs 3.

Wherein, blind hole 101 has all been seted up at the both ends of the outer annular lateral wall of inlayer 1, the parcel has cylindric structure's polyethylene 102 on the outer annular lateral wall of inlayer 1, polyethylene 102 is the graininess, polyethylene 102 parcel is fire-retardant on the lateral wall of inlayer 1, polyethylene 102's even fine line hole A103 of having seted up the running through of edge, fine section of thick bamboo 104 that runs through has been inserted in fine line hole A103, fine section of thick bamboo 104 department is run through to thinner wire, the both ends of fine section of thick bamboo 104 fixed cover respectively have sealing ring 105, the lateral wall of sealing ring 105 is hugged closely mutually with the lateral wall of restriction dish 3, polyethylene 102 just can't flow from the lateral wall department of fine section of thick bamboo 104, and polyethylene 102 also can receive the blockking of two restriction dishes 3, polyethylene 102 just can not run off like this.

Wherein, on the outer annular lateral wall of two restriction dishes 3 respectively fixed mounting have three inserted block 301, inserted block 301 is installed into a groove 202, the even fine wire hole B302 of running through of seting up in the edge of two restriction dishes 3, fine wire hole B302 is corresponding with fine wire hole A103, install six inserted columns 303 on the inner annular lateral wall of two restriction dishes 3 respectively, six inserted columns 303 are installed respectively into blind hole 101, fix restriction dish 3.

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

polyethylene 102 parcel has fire-retardant effect on the lateral wall of inlayer 1, the main traverse line runs through from main thread hole, the edge card of restriction dish 3 is in inner circular groove 201 department, six insert the post 303 and settle into blind hole 101 respectively, fix restriction dish 3, the lateral wall of sealing ring 105 is hugged closely with the lateral wall of restriction dish 3 mutually, polyethylene 102 just can't be followed the lateral wall department of thin section of thick bamboo 104 and is flowed, and polyethylene 102 also can receive blockking of two restriction dishes 3, when preventing that polyethylene 102 from receiving the extrusion or colliding, polyethylene 102 flows from the oral area at sheath 2 both ends.

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 practitioners skilled in this 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 fire-retardant power cable of crosslinked polyethylene insulation which characterized in that: the cable includes:

an inner layer (1); the middle part of the inner layer (1) is provided with a main line hole which penetrates through the inner layer; the outer end of the outer annular side wall of the inner layer (1) is wrapped with a protective layer (2); two ends of the side wall of the inner cavity of the protective layer (2) are respectively provided with an inner ring groove (201); three block grooves (202) are formed in the two inner ring grooves (201); the outer side wall of the protective layer (2) is wrapped with a shell (203);

and limiting discs (3) are respectively arranged at the two inner ring grooves (201).

2. The insulated flame-retardant crosslinked polyethylene power cable according to claim 1, wherein: the blind hole (101) have all been seted up at the both ends of the outer annular lateral wall of inlayer (1), the outer annular lateral wall of inlayer (1) goes up the parcel and has tubular structure's polyethylene (102).

3. The cross-linked polyethylene insulated flame retardant power cable according to claim 2, wherein: the edge of the polyethylene (102) is uniformly provided with a penetrating thin wire hole A (103), a penetrating thin tube (104) is inserted into the thin wire hole A (103), and two ends of the thin tube (104) are respectively and fixedly sleeved with a sealing ring (105).

4. The insulated flame-retardant crosslinked polyethylene power cable according to claim 1, wherein: two outer annular side wall of restriction dish (3) is last respectively fixed mounting have three inserted block (301), two the even fine rule hole B (302) of running through of seting up in the edge of restriction dish (3).

5. The cross-linked polyethylene insulated flame retardant power cable according to claim 2, wherein: six inserting columns (303) are respectively installed on the inner annular side walls of the two limiting discs (3), and the six inserting columns (303) are respectively inserted into the blind holes (101).