CN216053974U

CN216053974U - Outdoor lightning protection cable

Info

Publication number: CN216053974U
Application number: CN202122598116.8U
Authority: CN
Inventors: 廖正宁
Original assignee: Shenyang Yeqiao Cable Manufacturing Co ltd
Current assignee: Shenyang Yeqiao Cable Manufacturing Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-03-15
Anticipated expiration: 2031-10-27

Abstract

The utility model relates to the technical field of cables and discloses an outdoor lightning protection cable which comprises a cable core, wherein an insulating layer is arranged on the surface of the cable core, a pressure resistant layer is arranged on one side, away from the cable core, of the insulating layer, a flame retardant layer is arranged on one side, away from the insulating layer, of the pressure resistant layer, a water absorbing layer is arranged on one side, away from the pressure resistant layer, of the flame retardant layer, a wear-resistant layer is arranged on one side, away from the flame retardant layer, of the water absorbing layer, and a conductive strip is fixedly connected in a groove formed in the outer wall of the flame retardant layer. The wear-resistant layer made of polyvinyl chloride is arranged, so that the cable is flame-retardant, acid-base resistant, antimicrobial and wear-resistant, has good heat retention and elasticity, can effectively prevent the cable from surface wear in the transportation and laying processes, influences the service life, and solves the problem that most of the insulation and the sheath of the cable are made of plastics and rubber organic polymers and have poor general wear resistance.

Description

Outdoor lightning protection cable

Technical Field

The utility model relates to the technical field of cables, in particular to an outdoor lightning protection cable.

Background

The cable is a conductor commonly used in daily life of people, the using amount of the cable is rapidly increased along with the continuous development of social economy at present, and the quality requirement of the cable is also continuously improved, for example, the cable used in the industries of steel, metallurgy, electric power, chemical industry, petroleum and the like has higher requirements on the high temperature resistance, the anti-interference capability, the tensile resistance and the service life of the cable; the cable is usually dragged when being laid or used, so the wear resistance of the cable influences the service life of the cable; in the prior art, the insulation and the sheath of the cable are mostly made of plastic and rubber organic polymers, and the abrasion resistance of the plastic and rubber organic polymers is generally poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an outdoor lightning protection cable, which aims to solve the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an outdoor lightning protection cable, includes the cable core, the surface of cable core is provided with the insulating layer, one side that the cable core was kept away from to the insulating layer is provided with the compressive layer, one side that the insulating layer was kept away from to the compressive layer is provided with fire-retardant layer, one side that the compressive layer was kept away from to fire-retardant layer is provided with the layer that absorbs water, one side that fire-retardant layer was kept away from to the layer that absorbs water is provided with the wearing layer, fixedly connected with busbar in the recess of seting up on the outer wall on fire-retardant layer.

Preferably, the insulating layer is solvent-free polyurethane insulating coating layer, the even spraying of insulating layer is between cable core and resistance to compression layer, just the thickness of insulating layer is a millimeter, and solvent-free polyurethane has excellent physical properties, such as tensile strength, tear strength, impact strength, adhesion, anti-cathode stripping, dielectric strength, elongation, wear resistance etc. can play insulating effect, prevents that the cable electric leakage from leading to the construction accident.

Preferably, the compressive layer is made by silica gel, the thickness of compressive layer is five millimeters, the inner wall of compressive layer and the outer wall fixed connection of cable core, silica gel are a high activity adsorption material, belong to amorphous substance, do not react with any material except that alkali, hydrofluoric acid, be insoluble in water and any solvent, nontoxic tasteless, the chemical property is stable, can guarantee that the cable can not suffer destruction when receiving outside extrusion or impact force inside, the normal work of protection cable.

Preferably, fire-retardant layer is the fire-retardant pipe of glass that five millimeters are thick, the inner wall on fire-retardant layer passes through adhesive fixed connection with the outer wall on anti-pressure layer, and the fire-retardant pipe of glass can stop the burning and oneself is difficult to burn, can guarantee not burnt when getting on fire, also can not make the combustion range aggravation, enlarge, and the protection cable is inside not burnt out.

Preferably, the water absorbing layer is composed of super absorbent resin with a thickness of five millimeters, the inner wall of the water absorbing layer is fixedly connected with the outer wall of the pressure resistant layer, the super absorbent resin is a novel functional polymer material, has hydrophilic groups, can absorb a large amount of water, swells and can keep the synthetic resin without outflow of the water, such as starch grafted acrylate, grafted acrylamide, high-substitution crosslinked carboxymethyl cellulose, crosslinked carboxymethyl cellulose grafted acrylamide, crosslinked hydroxyethyl cellulose grafted acrylamide polymer, etc., can generally absorb water which is more than 100 times of the volume of the resin, has the highest water absorption rate of more than 1000 times, and is generally used as a medical material, such as diapers, sanitary napkins and the like, are also used as plugging materials in industry, can effectively absorb moisture, and prevent the cables from being permeated by moisture when being laid in a humid environment, so that the service life is shortened.

Preferably, the wear-resistant layer is made of a wear-resistant polyvinyl chloride material, the wear-resistant layer is five millimeters thick, polyvinyl chloride is PVC for short, thermoplastic resin formed by polymerizing vinyl chloride under the action of an initiator is a homopolymer of vinyl chloride, the homopolymer of vinyl chloride and a copolymer of vinyl chloride are collectively referred to as vinyl chloride resin, the PVC is very hard and has poor solubility, can only be dissolved in a few solvents such as cyclohexanone, dichloroethane, tetrahydrofuran and the like, is stable to organic and inorganic acids, alkali and salt, has chemical stability reduced along with the rise of the use temperature, is flame-retardant, acid-resistant, alkali-resistant, antimicrobial and wear-resistant, has good heat retention and elasticity, and can effectively prevent the surface wear of the cable in the transportation and laying processes and influence on the service life.

The utility model provides an outdoor lightning protection cable. The method has the following beneficial effects:

(1) the wear-resistant layer is made of polyvinyl chloride, the polyvinyl chloride is PVC for short, the thermoplastic resin is formed by polymerizing vinyl chloride under the action of an initiator, the polyvinyl chloride homopolymer and vinyl chloride copolymer are collectively called vinyl chloride resin, the PVC is very hard and has poor solubility, can only be dissolved in a few solvents such as cyclohexanone, dichloroethane, tetrahydrofuran and the like, is stable to organic and inorganic acids, alkalis and salts, has the chemical stability which is reduced along with the rise of the use temperature, has the characteristics of flame resistance, acid and alkali resistance, microorganism resistance, wear resistance, good heat retention and good elasticity, can effectively prevent the surface wear of the cable in the transportation and laying process and influence the service life, and solves the problems that the insulation and the sheath of the cable are mostly made of plastics and rubber organic polymers and have poor general wear resistance.

(2) The utility model is a new functional high molecular material, which has hydrophilic group, synthetic resin which can absorb water in large quantity and swell and keep the water not flowing out, such as starch graft acrylate, graft acrylamide, high substituted degree cross-linked carboxymethyl cellulose, cross-linked carboxymethyl cellulose graft acrylamide, cross-linked hydroxyethyl cellulose graft acrylamide polymer, etc., and can absorb water which is 100 times of the resin volume, the highest water absorption rate can reach more than 1000 times, generally used as medical material, such as diaper, sanitary towel, etc., and also used as plugging material in industry, and can effectively absorb water, and prevent the cable from being permeated by water when laid in humid environment, which results in shortened service life.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is an enlarged cross-sectional view of the present invention.

In the figure: 1. a cable core; 2. an insulating layer; 3. a pressure resistant layer; 4. a flame retardant layer; 5. a water-absorbing layer; 6. a wear layer; 7. a conductive strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1-2, the present invention provides a technical solution: an outdoor lightning protection cable comprises a cable core 1, wherein an insulating layer 2 is arranged on the surface of the cable core 1, the insulating layer 2 is a solvent-free polyurethane insulating coating layer, the insulating layer 2 is uniformly sprayed between the cable core 1 and a compression-resistant layer 3, the thickness of the insulating layer 2 is one millimeter, the solvent-free polyurethane has excellent physical properties such as tensile strength, tearing strength, impact strength, cohesive force, cathodic disbonding resistance, insulating strength, elongation, wear resistance and the like, can play an insulating effect and prevent construction accidents caused by cable leakage, the compression-resistant layer 3 is arranged on one side of the insulating layer 2 away from the cable core 1, the compression-resistant layer 3 is made of silica gel, the thickness of the compression-resistant layer 3 is five millimeters, the inner wall of the compression-resistant layer 3 is fixedly connected with the outer wall of the cable core 1, the silica gel is a high-activity adsorption material and belongs to an amorphous substance and does not react with any substance except strong alkali and hydrofluoric acid, insoluble in water and any solvent, nontoxic and tasteless, stable in chemical property, capable of ensuring that the inside of the cable can not be damaged when the cable is subjected to external extrusion or impact force, and protecting the normal work of the cable, one side of the compression layer 3, which is far away from the insulating layer 2, is provided with a flame-retardant layer 4, the flame-retardant layer 4 is a glass flame-retardant tube with the thickness of five millimeters, the inner wall of the flame-retardant layer 4 is fixedly connected with the outer wall of the compression layer 3 through an adhesive, the glass flame-retardant tube can prevent combustion without easy combustion, can ensure that the flame-retardant layer is not burnt when on fire, and can not aggravate and expand the combustion range, the inside of the cable is protected from being burnt out, one side of the compression layer 3, which is far away from the flame-retardant layer 4, is provided with a water-absorbing layer 5, the water-absorbing layer 5 is composed of super-absorbent resin with the thickness of five millimeters, the inner wall of the water-absorbing layer 5 is fixedly connected with the outer wall of the compression layer 3, the super-absorbent resin is a novel functional polymer material, synthetic resin with hydrophilic group, which can absorb a large amount of water and swell and keep the water not flowing out, such as starch grafted acrylate, grafted acrylamide, high-substitution crosslinked carboxymethyl cellulose, crosslinked carboxymethyl cellulose grafted acrylamide, crosslinked hydroxyethyl cellulose grafted acrylamide polymer and the like, can generally absorb water which is more than 100 times of the volume of the resin, the highest water absorption rate can be more than 1000 times, the synthetic resin is generally used as medical materials, such as diapers, sanitary towels and the like, and is also used as a plugging material industrially, can effectively absorb water, prevent a cable from being permeated by water when being laid in a humid environment and shortening the service life, a wear-resistant layer 6 is arranged on one side of a water absorption layer 5, which is far away from a flame-retardant layer 4, the wear-resistant layer 6 is made of wear-resistant polyvinyl chloride material, the thickness of the wear-resistant layer 6 is five millimeters, polyvinyl chloride is abbreviated as PVC, the thermoplastic resin is formed by polymerizing chloroethylene under the action of an initiator, is a homopolymer of chloroethylene, the homopolymer of chloroethylene and a copolymer of chloroethylene are collectively called as chloroethylene resin, PVC is very hard, the solubility is very poor, the PVC can only be dissolved in a few solvents such as cyclohexanone, dichloroethane, tetrahydrofuran and the like, the PVC is stable to organic and inorganic acids, alkalis and salts, the chemical stability is reduced along with the rise of the use temperature, and the PVC has the advantages of flame retardancy, acid and alkali resistance, microorganism resistance, wear resistance and better heat retention and elasticity, can effectively prevent the cable from causing surface abrasion in the transportation and laying processes, and influences the service life, a conductive strip 7 is fixedly connected in a groove formed in the outer wall of the flame-retardant layer 4, and the conductive strip 7 timely conducts the current generated by lightning stroke to the bottom surface after the cable is struck by lightning, and protects the cable.

When in use, the solvent-free polyurethane in the insulating layer 2 has excellent physical properties, such as tensile strength, tearing strength, impact strength, cohesive force, cathodic disbonding, insulating strength, elongation, wear resistance and the like, can play an insulating role to prevent construction accidents caused by cable electric leakage, the silica gel in the pressure-resistant layer 3 is a high-activity adsorbing material, belongs to an amorphous substance, does not react with any substance except strong alkali and hydrofluoric acid, is insoluble in water and any solvent, is nontoxic, tasteless and stable in chemical property, can ensure that the cable cannot be damaged when being extruded from the outside or the inside of the cable is damaged, protects the cable from normal operation due to impact force, the glass flame-retardant tube in the flame-retardant layer 4 can prevent combustion and is not easy to combust, can ensure that the cable is not burnt when in fire, can not aggravate and expand the combustion range, and can protect the inside of the cable from being burnt, the super absorbent resin in the water absorbing layer 5 is a novel functional polymer material, has hydrophilic groups, can absorb a large amount of water, can swell and can keep the water not flowing out, such as starch grafted acrylate, grafted acrylamide, high-substitution crosslinked carboxymethyl cellulose, crosslinked carboxymethyl cellulose grafted acrylamide, crosslinked hydroxyethyl cellulose grafted acrylamide polymer and the like, can generally absorb the water with the volume more than 100 times of the resin volume, has the highest water absorption rate more than 1000 times, is generally used as a medical material, such as a diaper, a sanitary towel and the like, is also industrially used as a plugging material, can effectively absorb the water, can prevent a cable from being permeated by the water when being laid in a humid environment to cause the shortening of the service life, polyvinyl chloride (PVC for short) in the wear-resistant layer 6, and is thermoplastic resin polymerized by vinyl chloride under the action of an initiator, the cable is a homopolymer of vinyl chloride, the vinyl chloride homopolymer and the vinyl chloride copolymer are collectively called as vinyl chloride resin, PVC is hard, the solubility is poor, the PVC can only be dissolved in a few solvents such as cyclohexanone, dichloroethane, tetrahydrofuran and the like, the PVC is stable to organic and inorganic acids, alkalis and salts, the chemical stability is reduced along with the rise of the use temperature, the PVC is flame-retardant, acid-base-resistant, antimicrobial and wear-resistant, and has better heat retention and elasticity, the surface abrasion of the cable in the transportation and laying process can be effectively prevented, the service life is influenced, and the conductive bar 7 can conduct the current generated by lightning stroke to the bottom surface in time after the cable is struck by the lightning to protect the cable.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. An outdoor lightning protection cable, includes cable core (1), its characterized in that: the surface of cable core (1) is provided with insulating layer (2), one side that cable core (1) was kept away from in insulating layer (2) is provided with compressive layer (3), one side that insulating layer (2) were kept away from in compressive layer (3) is provided with fire-retardant layer (4), one side that compressive layer (3) were kept away from in fire-retardant layer (4) is provided with layer (5) that absorbs water, one side that fire-retardant layer (4) were kept away from in layer (5) that absorbs water is provided with wearing layer (6), fixedly connected with busbar (7) in the recess seted up on the outer wall of fire-retardant layer (4).

2. An outdoor lightning protection cable according to claim 1, characterized in that: insulating layer (2) are solvent-free polyurethane insulating coating layer, insulating layer (2) even spraying is between cable core (1) and compressive layer (3), just the thickness of insulating layer (2) is a millimeter.

3. An outdoor lightning protection cable according to claim 1, characterized in that: the anti-pressure layer (3) is made of silica gel, the thickness of the anti-pressure layer (3) is five millimeters, and the inner wall of the anti-pressure layer (3) is fixedly connected with the outer wall of the cable core (1).

4. An outdoor lightning protection cable according to claim 1, characterized in that: the flame-retardant layer (4) is a glass flame-retardant tube with the thickness of five millimeters, and the inner wall of the flame-retardant layer (4) is fixedly connected with the outer wall of the pressure-resistant layer (3) through an adhesive.

5. An outdoor lightning protection cable according to claim 1, characterized in that: the water absorbing layer (5) is composed of super absorbent resin with the thickness of five millimeters, and the inner wall of the water absorbing layer (5) is fixedly connected with the outer wall of the pressure resistant layer (3).

6. An outdoor lightning protection cable according to claim 1, characterized in that: the wear-resistant layer (6) is made of wear-resistant polyvinyl chloride materials, and the thickness of the wear-resistant layer (6) is five millimeters.