WO2018188245A1 - 无卤低烟随行电梯电缆及其制造方法 - Google Patents

无卤低烟随行电梯电缆及其制造方法 Download PDF

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Publication number
WO2018188245A1
WO2018188245A1 PCT/CN2017/098409 CN2017098409W WO2018188245A1 WO 2018188245 A1 WO2018188245 A1 WO 2018188245A1 CN 2017098409 W CN2017098409 W CN 2017098409W WO 2018188245 A1 WO2018188245 A1 WO 2018188245A1
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WIPO (PCT)
Prior art keywords
cable
sheath
halogen
free low
smoke
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PCT/CN2017/098409
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English (en)
French (fr)
Inventor
谭言秦
王国权
吴士杰
张博
王鹏飞
Original Assignee
江苏亨通线缆科技有限公司
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Publication of WO2018188245A1 publication Critical patent/WO2018188245A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/02Disposition of insulation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/04Flexible cables, conductors, or cords, e.g. trailing cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/08Flat or ribbon cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • H01B7/295Protection against damage caused by extremes of temperature or by flame using material resistant to flame

Definitions

  • the present application relates to the field of cable technology, and in particular to a halogen-free low-smoke elevator cable and a method of manufacturing the same.
  • the conductive core in the prior art is Fastened in the sheath, there is no gap between them, so that the conductive core in the sheath has a small movable space and a large frictional force with the cavity of the sheath, and additionally receives axial tensile force when the bending is frequent, and the conductive wire Under the joint action of bending stress and tensile force, the core is easy to break, which causes the elevator to suddenly stop running, etc., which has certain safety hazards.
  • the elevator is used as a small enclosed space.
  • the sheath of the cable of the prior art elevator is an ordinary polyvinyl chloride material, which is easy to catch fire due to high temperature, and is not only easy to blow the internal conductive core.
  • the elevator stops running the amount of harmful gas and smoke generated by the combustion will further harm the people trapped in the elevator and cannot meet the needs of people.
  • the purpose of the application is to provide a halogen-free low-smoke elevator cable to alleviate the core breakage phenomenon of the accompanying elevator cable in the prior art and the poor flame retardancy of the outer sheath and the insulating layer in the event of fire, and the combustion release is harmful.
  • Another object of the present invention is to provide a method for manufacturing a halogen-free low-smoke elevator cable, which can alleviate the core breakage phenomenon of the accompanying elevator cable in the prior art and the flame retardant of the outer sheath and the insulating layer in the event of a fire. Poor, burning The release of harmful gases and heavy smoke is a major technical problem.
  • the application provides a halogen-free low-smoke traveling elevator cable, which comprises a circular conductive core and a sheath formed by twisting and pressing a plurality of electric round copper wires.
  • the outer surface of the conductive core is coated with an insulating layer, and the plurality of conductive cores are collectively cabled to form a first cable, and the sheath is provided with a plurality of cylindrical cavities arranged side by side, one The first cable can be fixed in one of the cavities and form a gap between adjacent conductive cores.
  • Both the insulating layer and the sheath are made of an elastomeric halogen-free low-smoke flame-retardant polyolefin material.
  • the method further includes an insulating core that prevents the conductive core from sliding relative to each other in the cavity, and at least one of the insulating cores and the at least one conductive core are cabled together to form a second cable.
  • One of the second cables can be secured within one of the cavities.
  • the insulating core is the same diameter as the conductive core.
  • the insulating core is made of an elastomer-free halogen-free low-smoke flame-retardant polyolefin material.
  • the second cable includes one of the insulating core and six of the conductive cores, the insulating core is located at the center of the second cable, and the six conductive cores surround the insulation The core is disposed and in contact with the insulating core.
  • the second cable includes two of the insulating core and two of the conductive cores, and the insulating core and the conductive core are spaced apart around the center of the second cable.
  • a shielding layer is disposed on an outer surface of the first cable and/or the second cable, and an inner sheath separated from the sheath is further disposed outside the shielding layer.
  • the shielding layer is made of super soft monofilament.
  • the shielding layer is a copper mesh woven by copper wire, or is an aluminum foil, or is made of both copper wire and aluminum foil.
  • the inner sheath is made of an elastomer-free halogen-free low-smoke flame-retardant polyolefin material.
  • the sheath is further provided with an aviation galvanized steel strand with increased tensile strength.
  • two of the aviation galvanized steel strands are symmetrically disposed on both sides of the sheath.
  • the application also provides a halogen-free low-smoke accompanying elevator cable, comprising a circular conductive core and a sheath formed by twisting and pressing a plurality of electric round copper wires;
  • the outer surface of the conductive core is coated with an insulating layer, and the plurality of conductive cores are collectively cabled to form a first cable, and the sheath is provided with a plurality of cylindrical cavities arranged side by side, one The first cable can be fixed in one of the cavities and form a gap between adjacent conductive cores;
  • the insulating layer and the sheath are both made of an elastomeric halogen-free low-smoke flame-retardant polyolefin material;
  • the sheath has an oblate cross section, and the outer surface of the sheath is symmetrically provided with a plurality of grooves on the upper and lower sides.
  • the groove is a triangular groove.
  • the application also provides a method for manufacturing a halogen-free low-smoke traveling elevator cable, comprising: twisting and pressing a plurality of electrician round copper wires to form a circular conductive core.
  • An outer surface of the conductive core is covered with an insulating layer.
  • a first cable formed by a plurality of the conductive cores being cabled together is fixed in a cavity in a sheath, and a gap is formed between the adjacent conductive cores, wherein the cavity is more
  • the roots are juxtaposed and have a cylindrical shape, and each of the first cables is fixed in a corresponding one of the cavities.
  • Both the insulating layer and the sheath are made of an elastomeric halogen-free low-smoke flame-retardant polyolefin material.
  • the method further includes: forming at least one insulating core and at least one of the conductive cores to form a second cable, wherein the insulating core is used to prevent the conductive core from being The cavity slides relatively.
  • the second cable is secured within the cavity, wherein each of the second cables is secured within a corresponding one of the cavities.
  • the method further includes coating a shielding layer on an outer surface of the first cable and/or the second cable. An inner sheath separated from the sheath is overcoated on the shielding layer.
  • the method comprises: forming the shielding layer using a super flexible monofilament.
  • the method comprises: forming the inner sheath with an elastomeric halogen-free low-smoke flame-retardant polyolefin material.
  • the application also provides a method for manufacturing a halogen-free low-smoke traveling elevator cable, comprising: twisting and pressing a plurality of electrician round copper wires to form a circular conductive core. An outer surface of the conductive core is covered with an insulating layer.
  • a first cable formed by a plurality of the conductive cores being cabled together is fixed in a cavity in a sheath, and a gap is formed between the adjacent conductive cores, wherein the cavity is more
  • the roots are juxtaposed and have a cylindrical shape, and each of the first cables is fixed in a corresponding one of the cavities, the sheath has an oblate cross section, and the outer portion of the sheath
  • the upper and lower sides of the surface are symmetrically provided with a plurality of grooves.
  • Both the insulating layer and the sheath are made of an elastomeric halogen-free low-smoke flame-retardant polyolefin material.
  • the halogen-free low-smoke traveling elevator cable comprises a circular conductive core and a sheath formed by twisting and pressing a plurality of electric round copper wires, wherein the outer surface of the conductive core is covered with an insulating layer and the plurality of conductive
  • the cores are jointly cabled to form a first cable, and the sheath is provided with a plurality of cylindrical cavities arranged side by side, and the first cable is fixed in the cavity by a cable forming machine or the like, and further, through the insulating layer
  • the elastic deformation of the sheath generates friction to fix the first cable in the cavity; at this time, since the conductive core is a circular core, when it is fixed in the cavity, the adjacent conductive core A gap is also formed between the gaps to ensure that the radial direction of the conductive core has a larger movable space when the first cable is bent, so that the conductive core is only subjected to a small pulling force in the axial direction, thereby reducing the excessive pulling force
  • the insulating layer and the sheath are all made of an elastomer-free halogen-free low-smoke flame-retardant polyolefin material, and the elastomer-free halogen-free low-smoke flame-retardant polyolefin material has superior flame retardancy, and when the fire occurs, the spreading speed is slower.
  • the concentration of smoke is low, the visibility is high, and the relative release of harmful gases is small, which will not cause too much harm to the human body and facilitate the safe transfer of personnel.
  • the other halogen-free low-smoke traveling elevator cable provided by the present application can not only realize the beneficial effects of the aforementioned halogen-free low-smoke traveling elevator cable, but also has several triangular grooves symmetrically arranged on the upper and lower sides of the outer surface of the sheath to relieve the crowding.
  • the pressure during molding avoids the unevenness of the surface of the sheath and the thicker drum in the middle position, which affects the performance of the sheath.
  • FIG. 1 is a schematic structural view of a halogen-free low-smoke traveling elevator cable according to an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of an emergency communication cable according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a first cable provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a second cable provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a conductive core provided by an embodiment of the present application.
  • Icon 100-sheath; 200-conductive core; 300-insulated core; 400-first cable; 500-second cable; 600-triangular groove; 700- inner sheath; 800-shield; 201-Insulation layer.
  • connection In the description of the present application, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise specifically defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meanings of the above terms in the present application can be understood in the specific circumstances for those skilled in the art.
  • FIG. 1 is a schematic structural diagram of a halogen-free low-smoke traveling elevator cable according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of an emergency communication cable according to an embodiment of the present application
  • FIG. 3 is a first cable provided by an embodiment of the present application
  • FIG. 4 is a schematic structural diagram of a second cable provided by an embodiment of the present application
  • FIG. 5 is a schematic structural diagram of a conductive core provided by an embodiment of the present application.
  • the embodiment of the present application provides a halogen-free low-smoke traveling elevator cable, which comprises a circular conductive core 200 and a sheath 100 formed by twisting and pressing a plurality of electric round copper wires.
  • the outer surface of the conductive core 200 is covered with an insulating layer 201, and the plurality of conductive cores 200 are cabled together to form a first cable 400.
  • the sheath 100 is provided with a plurality of cylindrical cavities arranged side by side, one A cable 400 can be secured within a cavity and form a gap between adjacent conductive cores 200.
  • Both the insulating layer 201 and the sheath 100 are made of an elastomeric halogen-free low-smoke flame-retardant polyolefin material.
  • the halogen-free low-smoke traveling elevator cable provided by the embodiment of the present application includes a circular conductive core 200 and a sheath 100 formed by twisting and pressing a plurality of electric round copper wires, wherein the outer surface of the conductive core 200 is covered with insulation.
  • the layer 201, the plurality of conductive cores 200 are cabled together to form a first cable 400.
  • the sheath 100 is provided with a plurality of cylindrical cavities arranged side by side, and the first cable 400 is fixed in the air by a cable machine or the like.
  • the first cable 400 is fixed in the cavity by elastic deformation of the insulating layer 201 and the sheath 100 to generate a frictional force; at this time, since the conductive core 200 is a circular core, When it is fixed in the cavity, a gap is formed between the adjacent conductive cores 200, which can ensure a larger movable space in the radial direction of the conductive core 200 when the first cable 400 is bent, so that The conductive core 200 receives only a small pulling force in the axial direction, thereby reducing the hidden danger of breaking the core due to excessive pulling force.
  • the insulating layer 201 and the sheath 100 are both made of an elastomer-free halogen-free low-smoke flame-retardant polyolefin material, and the elastomer-free halogen-free low-smoke flame-retardant polyolefin material has superior flame retardant properties, and when the fire occurs, the spread speed is further increased. Slow, the concentration of smoke is low, the visibility is high, and the relative release of harmful gases is small, which will not cause too much harm to the human body and facilitate the safe transfer of personnel.
  • the embodiment may further include preventing the conductive core 200 from being inside the cavity.
  • the relatively sliding insulating core 300 has the same diameter as the conductive core 200, and at least one insulating core 300 and at least one conductive core 200 are cabled together to form a second cable 500, a second cable Line 500 can be secured within a cavity.
  • the insulating core 300 can fill an excessively large space in the cavity, and can prevent the conductive core 200 in the cavity from being twisted and twisted in the frequent bending of the cable, and the twisted conductive wire
  • the core 200 easily affects the bending resistance of the conductive core 200 and affects the service life of the cable.
  • the insulating core 300 can be made of an elastomeric halogen-free low-smoke flame-retardant polyolefin material, which can also improve the tensile strength of the entire cable while filling.
  • This embodiment sets the second cable 500 to have the following two types:
  • the first type is that the second cable 500 includes an insulating core 300 and six conductive cores 200.
  • the insulating core 300 is located at the center of the second cable 500, and the six conductive cores 200 are wrapped around the insulating mat.
  • the core 300 is disposed and in contact with the insulating pad core 300.
  • a gap is formed between any two adjacent conductive cores 200, and the gap can be ensured.
  • such a second cable 500 as described above may be referred to as a first form of second cable.
  • the second type is that the second cable 500 includes two insulating cores 300 and two conductive cores 200.
  • the insulating cores 300 and the conductive cores 200 are spaced around the center of the second cables 500. Moreover, a gap is formed between the two conductive cores 200, which ensures that when the first cable 400 is bent, the radial direction of the conductive core 200 has a larger movable space, so that the conductive core 200 is axially only A small pulling force reduces the risk of breaking the core due to excessive pulling force.
  • the two insulating cores 300 are oppositely disposed in the rich space in the cavity between the two sides of the two conductive cores 200.
  • such second cable 500 described above may be referred to as a second form of second cable.
  • an insulating core 300 having a diameter different from that of the conductive core 200 may also be used.
  • conductive cores 200 are all circular cores. In this embodiment, conductive cores 200 having other shapes in the radial cross section may also be used.
  • the halogen-free low-smoke accompanying elevator cable is further provided with a cable connecting the emergency button inside the elevator and the external control box.
  • the person inside the elevator cannot send a distress signal because the cable is disturbed.
  • the outer surface of the first cable 400 and/or the second cable 500 may be provided with a shielding layer 800.
  • the shielding layer 800 may further be provided with an inner sheath separated from the sheath 100. 700.
  • the sheath 100 can be wrapped over the outer sheath 700.
  • shielding layer 800 means that the outer surface of the first cable 400 and the second cable 500 are provided with the shielding layer 800, or the outer surface of one of the first cable 400 and the second cable 500 is provided. Shielding layer 800.
  • the shielding layer 800 can effectively alleviate the interference of the surrounding electrical components on the emergency communication cable, and the inner sheath 700 can further ensure the insulation of the emergency communication cable.
  • the second cable 500 having the outer surface provided with the shield layer 800 and the inner sheath 700 may be referred to as a third form second cable.
  • the shielding layer 800 provided in this embodiment is made of super-soft monofilament. Further, the shielding layer 800 can be woven by copper wire to complete the shielding effect, and also meet the continuous wire and service life when the cable is bent. long. Alternatively, an aluminum foil may be used as the shield layer 800, or both may be used simultaneously to further ensure the insulation of the emergency communication cable.
  • the inner sheath 700 is made of an elastomeric halogen-free low-smoke flame-retardant polyolefin material.
  • the inner sheath 700 is completely isolated from the sheath 100, and when the sheath 100 is damaged in the event of a fire or the like, the inner sheath 700 further ensures the smooth communication of the emergency communication cable.
  • an aviation galvanized steel strand (not shown) for increasing tensile strength is further disposed in the sheath 100.
  • the elastomer-free halogen-free low-smoke flame-retardant polyolefin material has a certain tensile strength
  • the tensile force of the halogen-free low-smoke elevator cable is increased as the height of the building increases, and therefore, in order to make the halogen-free low smoke
  • the accompanying elevator cable is adapted to various building height requirements, and two aviation galvanized steel strands are symmetrically arranged on both sides of the sheath 100.
  • the following describes a method for manufacturing a halogen-free low-smoke traveling elevator cable according to the embodiment.
  • the method for manufacturing the halogen-free low-smoke elevator cable includes the following steps:
  • step S101 a plurality of electrician round copper wires are twisted and pressed to form a circular conductive core 200.
  • step S102 the outer surface of the conductive core 200 is covered with an insulating layer 201.
  • Step S103 the first cable 400 formed by the plurality of conductive cores 200 being cabled together is fixed in a cavity in the sheath 100, and a gap is formed between the adjacent conductive cores 200, wherein the cavity is a plurality of juxtaposed and cylindrical shapes, and each of the first cables 400 is fixed in a corresponding cavity;
  • the insulating layer 201 and the sheath 100 are both made of an elastomer-free halogen-free low-smoke flame-retardant polyolefin material.
  • the method may further include:
  • step S104 the at least one insulating core 300 and the at least one conductive core 200 are cabled together to form a second cable 500, wherein the insulating core 300 is used to prevent the conductive core 200 from sliding relative to each other in the cavity.
  • step S104 may include: placing the insulating core 300 at the center of the second cable 500, and the six conductive cores 200 surrounding the insulating core 300 The insulating cores 300 are disposed and both are in contact with each other to form a first form of the second cable.
  • the step S104 may include: spacing the insulating core 300 and the conductive core 200 around the center of the second cable 500, and jointly forming the cable to form a second Form the second cable 500.
  • an insulating core 300 having a diameter different from that of the conductive core 200 may also be used.
  • step S105 the second cable 500 is fixed in the cavity, wherein each of the second cables 500 is fixed in a corresponding cavity.
  • the method may further include:
  • step S106 the shielding layer 800 is coated on the outer surface of the first cable 400 and/or the second cable 500.
  • step S107 the inner protective layer 700 isolated from the sheath 100 is covered on the outer surface of the shielding layer 800.
  • the method may further include:
  • the shielding layer 800 is formed by using a super-soft monofilament. Wherein, step S108 is before step S106.
  • the shielding layer 800 provided in this embodiment is made of a super-flexible monofilament.
  • the shielding layer 800 can be woven by copper wire, and the shielding effect is achieved while satisfying the bending of the cable. Silk, long service life.
  • an aluminum foil may be used as the shield layer 800, or both may be used simultaneously to further ensure the insulation of the emergency communication cable.
  • the method may further include:
  • step S109 an inner sheath 700 is formed using an elastomeric halogen-free low-smoke flame-retardant polyolefin material. Wherein, step S109 is before step S107.
  • the method may further include:
  • step S110 an aviation galvanized steel strand with increased tensile strength is disposed in the sheath 100.
  • step S110 two aviation galvanized steel strands are symmetrically disposed on both sides of the sheath 100.
  • the embodiment of the present application further provides a halogen-free low-smoke traveling elevator cable, which comprises a circular conductive core 200 and a sheath 100 formed by twisting and pressing a plurality of electric round copper wires.
  • the outer surface of the conductive core 200 is covered with an insulating layer 201, and the plurality of conductive cores 200 are cabled together to form a first cable 400.
  • the sheath 100 is provided with a plurality of cylindrical cavities arranged side by side, one A cable 400 can be secured within a cavity and form a gap between adjacent conductive cores 200.
  • Both the insulating layer 201 and the sheath 100 are made of an elastomeric halogen-free low-smoke flame-retardant polyolefin material.
  • the difference between the halogen-free low-smoke traveling elevator cable provided in the second embodiment of the present application and the halogen-free low-smoke traveling elevator cable provided in the first embodiment of the present invention is that the cross-section of the sheath 100 is oblate in this embodiment, and The outer surface of the sheath 100 is symmetrically provided with a plurality of grooves on the upper and lower sides, and optionally, the grooves are triangular grooves 600.
  • the shape of the groove may be other shapes, and the number of the grooves is not specifically limited. For the remaining unmentioned points, refer to the first embodiment.
  • the halogen-free low-smoke traveling elevator cable provided by the embodiment of the present application includes a circular conductive core 200 and a sheath 100 formed by twisting and pressing a plurality of electric round copper wires, wherein the outer surface of the conductive core 200 is covered with insulation.
  • the layer 201, the plurality of conductive cores 200 are cabled together to form a first cable 400.
  • the sheath 100 is provided with a plurality of cylindrical cavities arranged side by side, and the first cable 400 is fixed in the air by a cable machine or the like.
  • the first cable 400 is fixed in the cavity by elastic deformation of the insulating layer 201 and the sheath 100 to generate a frictional force; at this time, since the conductive core 200 is a circular core, When it is fixed in the cavity, a gap is formed between the adjacent conductive cores 200, which can ensure a larger movable space in the radial direction of the conductive core 200 when the first cable 400 is bent, so that The conductive core 200 receives only a small pulling force in the axial direction, thereby reducing the hidden danger of breaking the core due to excessive pulling force;
  • the insulating layer 201 and the sheath 100 are both made of an elastomer-free halogen-free low-smoke flame-retardant polyolefin material, which is more elastic and has a higher tensile strength than a conventional polyvinyl chloride material, and is relatively capable of Making the conductive core 200 active The distance between the two is larger, and the axial pulling force generated when bending is smaller.
  • the elastomer-free halogen-free low-smoke flame-retardant polyolefin material has superior flame-retardant properties.
  • the spread speed is slower, the smoke concentration is low, the visibility is high, and the relative release amount of harmful gases is small, which does not cause too much damage to the human body. Hazard, convenient for the safe transfer of personnel.
  • a plurality of triangular grooves 600 are symmetrically disposed on the upper and lower sides of the outer surface of the sheath 100, the pressure during extrusion is relieved, and the surface unevenness of the sheath 100 and the intermediate position of the drum are prevented from being thick, which affects the sheath. 100 performance.
  • the sheath 100 is integrally formed, and the triangular recesses 600 are four, and the two pairs are oppositely disposed on the upper and lower sides of the outer surface of the sheath 100, thereby separating the sheath 100 into the first segments connected in sequence, The second and third segments, wherein the lengths of the first segment and the third segment are substantially equal, and the length of the second segment is greater than the length of the first segment and the second segment.
  • a first cable 400 and a first form second cable which are jointly cabled by the seven conductive cores 200 are disposed in parallel, wherein the above seven conductive cores
  • one conductive core 200 is located at the center of the first cable 400, and six conductive cores 200 are disposed around the center of the conductive core 200 and are respectively disposed at the center of the conductive core 200 contacts.
  • the first cable 400 which is jointly cabled by the seven conductive cores 200 in the first stage is disposed away from the third section
  • the first cable 400 which is jointly cabled by the seven conductive cores 200 in the third section is away from the first A set of settings.
  • a second form second cable, two third form second cables and another second form second cable are arranged in parallel, and the first and third sections are One cable and the second cable are arranged in a row.
  • the adjacent second form second cable and the third form second cable are adjacent to each other, and the two third form second cables have a certain distance therebetween.
  • the two second form second cables in the second segment are disposed adjacent to the first segment and the third segment, respectively.
  • step S201 a plurality of electrician round copper wires are twisted and pressed to form a circular conductive core 200.
  • step S202 the outer surface of the conductive core 200 is covered with an insulating layer 201.
  • Step S203 the first cable 400 formed by the plurality of conductive cores 200 being cabled together is fixed in a cavity in the sheath 100, and a gap is formed between the adjacent conductive cores 200, wherein the cavity is A plurality of juxtaposed and cylindrical shapes are formed, and each of the first cables 400 is fixed in a corresponding cavity, the cross section of the sheath 100 is oblate, and the outer surface of the sheath 100 is symmetrical on the upper and lower sides.
  • the groove is a triangular groove 600.
  • the insulating layer 201 and the sheath 100 are both made of an elastomeric halogen-free low-smoke flame-retardant polyolefin material.
  • the sheath 100 is integrally formed, and the triangular recesses 600 are four, and the two pairs are oppositely disposed on the upper and lower sides of the outer surface of the sheath 100, thereby separating the sheath 100 into successively connected.
  • Step S203 includes placing a first cable 400 and a first form second cable, which are each cabled by seven conductive cores 200, in parallel in the first and third sections.
  • the first cable 400 in which the above seven conductive cores 200 are cabled together one conductive core 200 is located at the center of the first cable 400, and six conductive cores 200 are disposed around the central conductive core 200. Both are in contact with the conductive core 200 located at the center.
  • the first cable 400 which is jointly cabled by the seven conductive cores 200 in the first stage is disposed away from the third section, and the first cable 400 which is jointly cabled by the seven conductive cores 200 in the third section is away from the first A set of settings.
  • Step S203 further includes placing a second form second cable, two third form second cables, and another second form second cable in parallel in the second segment, so that the four cables are
  • the first cable 400 and the second cable 500 in the first and third segments are arranged in a row.
  • the adjacent second form second cable and the third form second cable are close to each other, and the two third form second cables have a certain distance between them.
  • the two second form second cables in the second segment are disposed adjacent to the first segment and the third segment, respectively.
  • the halogen-free low-smoke accompanying elevator cable provided by the present application reduces the hidden danger of breaking the core due to excessive pulling force; when the fire occurs, the spreading speed is slower, the concentration of the smoke is low, the visibility is high, and the relative release amount of the harmful gas is small, It is too harmful to the human body and facilitates the safe transfer of personnel.
  • the other halogen-free low-smoke traveling elevator cable provided by the present application can not only realize the beneficial effects of the aforementioned halogen-free low-smoke traveling elevator cable, but also relieve the pressure during extrusion, avoiding the unevenness of the surface of the sheath and the deviation of the intermediate position. Thick, affecting the performance of the jacket.

Abstract

本申请提供了一种无卤低烟随行电梯电缆及其制造方法,涉及电缆技术领域,无卤低烟随行电梯电缆包括多股电工圆铜线绞合并压制而成的圆形的导电线芯以及护套;导电线芯外表面包覆有绝缘层,多根导电线芯共同成缆形成第一缆线,护套内设有多根并列设置的呈圆柱体形的空腔,一根第一缆线能够固定在一根空腔内,并使相邻导电线芯之间形成缝隙;绝缘层和护套均由弹性体无卤低烟阻燃聚烯烃材料制成。缓解了现有技术中的随行电梯电缆容易发生断芯现象以及在发生火灾时外护套和绝缘层等阻燃性差、燃烧释放有害气体多和浓烟大技术问题。

Description

无卤低烟随行电梯电缆及其制造方法
相关申请的交叉引用
本申请要求于2017年04月10日提交中国专利局的申请号为201720365406.9、名称为“无卤低烟随行电梯电缆”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电缆技术领域,具体而言,涉及一种无卤低烟随行电梯电缆及其制造方法。
背景技术
近年来,随着我国基础建设力度的不断加大,房地产业出现了前所未有的井喷行情,高层建筑不断涌现,电梯的需求量迅速增加,随行电梯电缆作为电力运输载体,在整个电梯组件内起到很重要的作用,由于控制电梯的随行电梯电缆跟着轿厢一起上下随动,电缆会长时间的频繁弯曲,因此对电缆内导电线芯的抗弯曲要求很高现有技术中的导电线芯被紧固在护套内,相互之间没有缝隙,使护套内的导电线芯活动空间狭小且与护套的空腔摩擦力大,在频繁弯曲时,还额外承受轴向的拉力,导电线芯在弯曲应力和拉力的共同作用下,很容易挣断,进而造成电梯突然停止运行等情况,具有一定的安全隐患。
此外,电梯作为小型封闭空间,在出现房屋起火等事故时,现有技术电梯随行电缆的护套等都是普通的聚氯乙烯材料,很容易因高温而起火,不但容易烧断内部导电线芯导致电梯停止运行,其燃烧产生的大量有害气体量和浓烟还会对被困在电梯内的人造成进一步的危害,不能满足人们的需求。
公开于该背景技术部分的信息仅仅旨在加深对本申请的总体背景技术的理解,而不应当被视为承认或以任何形式暗示该信息构成已为本领域技术人员所公知的现有技术。
发明内容
本申请的目的在于提供一种无卤低烟随行电梯电缆,以缓解现有技术中的随行电梯电缆容易发生断芯现象以及在发生火灾时外护套和绝缘层等阻燃性差、燃烧释放有害气体多和浓烟大技术问题。
本申请的另一目的在于提供一种无卤低烟随行电梯电缆的制造方法,以缓解现有技术中的随行电梯电缆容易发生断芯现象以及在发生火灾时外护套和绝缘层等阻燃性差、燃烧 释放有害气体多和浓烟大技术问题。
本申请提供一种无卤低烟随行电梯电缆,包括多股电工圆铜线绞合并压制而成的圆形的导电线芯以及护套。所述导电线芯外表面包覆有绝缘层,多根所述导电线芯共同成缆形成第一缆线,所述护套内设有多根并列设置的呈圆柱体形的空腔,一根所述第一缆线能够固定在一个所述空腔内,并使相邻所述导电线芯之间形成缝隙。所述绝缘层和所述护套均由弹性体无卤低烟阻燃聚烯烃材料制成。
进一步的;还包括防止所述导电线芯在所述空腔内相对滑动的绝缘垫芯,至少一根所述绝缘垫芯与至少一根所述导电线芯共同成缆形成第二缆线,一根所述第二缆线能够固定在一个所述空腔内。
进一步的;所述绝缘垫芯与所述导电线芯直径相同。
进一步的;所述绝缘垫芯由弹性体无卤低烟阻燃聚烯烃材料制成。
进一步的;所述第二缆线包括一根所述绝缘垫芯和六根所述导电线芯,所述绝缘垫芯位于所述第二缆线中心,六根所述导电线芯环绕在所述绝缘垫芯设置并均与所述绝缘垫芯接触。
进一步的;所述第二缆线包括两根所述绝缘垫芯和两根所述导电线芯,所述绝缘垫芯和所述导电线芯绕所述第二缆线中心间隔设置。
进一步的;所述第一缆线和/或所述第二缆线外表面设有屏蔽层,所述屏蔽层外还设有与所述护套隔离的内护层。
进一步的;所述屏蔽层为超柔单丝编制而成。
进一步的;所述屏蔽层为铜丝编织而成的铜网,或者为铝箔,或者为铜丝与铝箔二者共同制成。
进一步的;所述内护层由弹性体无卤低烟阻燃聚烯烃材料制成。
进一步的;所述护套内还设有增加抗拉力的航空镀锌钢绞线。
进一步的;所述护套的两侧对称设有两根所述航空镀锌钢绞线。
本申请还提供一种无卤低烟随行电梯电缆,包括多股电工圆铜线绞合并压制而成的圆形的导电线芯以及护套;
所述导电线芯外表面包覆有绝缘层,多根所述导电线芯共同成缆形成第一缆线,所述护套内设有多根并列设置的呈圆柱体形的空腔,一根所述第一缆线能够固定在一个所述空腔内,并使相邻所述导电线芯之间形成缝隙;
所述绝缘层和所述护套均由弹性体无卤低烟阻燃聚烯烃材料制成;
所述护套的横截面呈扁圆形,且所述护套的外表面上下侧对称设有若干个凹槽。
进一步的;所述凹槽为三角形凹槽。
本申请还提供一种无卤低烟随行电梯电缆的制造方法,包括:将多股电工圆铜线绞合并压制形成圆形的导电线芯。在所述导电线芯外表面包覆绝缘层。将由多根所述导电线芯共同成缆形成的第一缆线固定于一护套内的空腔内,并使相邻所述导电线芯之间形成缝隙,其中,所述空腔为多根并列设置的且呈圆柱体形,并且,每一根所述第一缆线固定在一个对应的所述空腔内。所述绝缘层和所述护套均由弹性体无卤低烟阻燃聚烯烃材料制成。
进一步的;所述方法还包括:将至少一根绝缘垫芯与至少一根所述导电线芯共同成缆形成第二缆线,其中,所述绝缘垫芯用于防止所述导电线芯在所述空腔内相对滑动。将所述第二缆线固定于所述空腔内,其中,每一根所述第二缆线固定在一个对应的所述空腔内。
进一步的;所述方法还包括:在所述第一缆线和/或所述第二缆线外表面包覆屏蔽层。在所述屏蔽层外包覆与所述护套隔离的内护层。
进一步的;所述方法包括:采用超柔单丝编制形成所述屏蔽层。
进一步的;所述方法包括:采用弹性体无卤低烟阻燃聚烯烃材料制成所述内护层。
本申请还提供一种无卤低烟随行电梯电缆的制造方法,包括:将多股电工圆铜线绞合并压制形成圆形的导电线芯。在所述导电线芯外表面包覆绝缘层。将由多根所述导电线芯共同成缆形成的第一缆线固定于一护套内的空腔内,并使相邻所述导电线芯之间形成缝隙,其中,所述空腔为多根并列设置的且呈圆柱体形,并且,每一根所述第一缆线固定在一个对应的所述空腔内,所述护套的横截面呈扁圆形,且所述护套的外表面上下侧对称设有若干个凹槽。所述绝缘层和所述护套均由弹性体无卤低烟阻燃聚烯烃材料制成。
相对于现有技术,本申请提供的无卤低烟随行电梯电缆及其制造方法的有益效果如下:
本申请提供的无卤低烟随行电梯电缆包括多股电工圆铜线绞合并压制而成的圆形的导电线芯以及护套,其中,导电线芯外表面包覆有绝缘层,多根导电线芯共同成缆形成第一缆线,护套内设有多根并列设置的呈圆柱体形的空腔,第一缆线通过成缆机等固定在空腔内,进一步的,是通过绝缘层与护套弹性变形挤压产生摩擦力而使第一缆线固定在空腔内;此时,由于导电线芯均为圆形线芯,当其固定在空腔内后,相邻导电线芯之间还会形成缝隙,该缝隙能够保证第一缆线弯曲时,导电线芯的径向方向有更大的活动空间,使导电线芯轴向只受到很小的拉力,减少因拉力过大而断芯的隐患;
进一步的,绝缘层和护套均由弹性体无卤低烟阻燃聚烯烃材料制成,弹性体无卤低烟阻燃聚烯烃材料阻燃性能优越,当火灾发生时,蔓延速度更慢,烟的浓度低,可见度高,有害气体相对释放量小,不会对人体造成太大危害,方便人员安全转移。
本申请提供的另一种无卤低烟随行电梯电缆不但能够实现前述无卤低烟随行电梯电缆的有益效果,还在护套的外表面上下侧对称设有若干个三角形凹槽,以缓解挤塑时的压力,避免护套表面不平整和中间位置起鼓偏厚,影响护套的性能。
附图说明
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案,下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本申请的一些实施方式,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的无卤低烟随行电梯电缆的结构示意图;
图2为本申请实施例提供的紧急通讯用缆线的结构示意图;
图3为本申请实施例提供的第一缆线的结构示意图;
图4为本申请实施例提供的第二缆线的结构示意图;
图5为本申请实施例提供的导电线芯的结构示意图。
图标:100-护套;200-导电线芯;300-绝缘垫芯;400-第一缆线;500-第二缆线;600-三角形凹槽;700-内护层;800-屏蔽层;201-绝缘层。
具体实施方式
下面将结合附图对本申请的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
在本申请的描述中,需要说明的是,术语“中心”、“上”、“下”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本申请和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请的限制。此外,术语“第一”、“第二”、“第三”仅用于描述目的,而不能理解为指示或暗示相对重要性。
在本申请的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本申请中的具体含义。
图1为本申请实施例提供的无卤低烟随行电梯电缆的结构示意图;图2为本申请实施例提供的紧急通讯用缆线的结构示意图;图3为本申请实施例提供的第一缆线的结构示意图;图4为本申请实施例提供的第二缆线的结构示意图;图5为本申请实施例提供的导电线芯的结构示意图。
实施例一
如图1-图5所示,本申请实施例提供一种无卤低烟随行电梯电缆,包括多股电工圆铜线绞合并压制而成的圆形的导电线芯200以及护套100。
导电线芯200外表面包覆有绝缘层201,多根导电线芯200共同成缆形成第一缆线400,护套100内设有多根并列设置的呈圆柱体形的空腔,一根第一缆线400能够固定在一个空腔内,并使相邻导电线芯200之间形成缝隙。
绝缘层201和护套100均由弹性体无卤低烟阻燃聚烯烃材料制成。
本申请实施例提供的无卤低烟随行电梯电缆包括多股电工圆铜线绞合并压制而成的圆形的导电线芯200以及护套100,其中,导电线芯200外表面包覆有绝缘层201,多根导电线芯200共同成缆形成第一缆线400,护套100内设有多根并列设置的呈圆柱体形的空腔,第一缆线400通过成缆机等固定在空腔内,进一步的,是通过绝缘层201与护套100弹性变形挤压产生摩擦力而使第一缆线400固定在空腔内;此时,由于导电线芯200均为圆形线芯,当其固定在空腔内后,相邻导电线芯200之间还会形成缝隙,该缝隙能够保证第一缆线400弯曲时,导电线芯200的径向方向有更大的活动空间,使导电线芯200轴向只受到很小的拉力,减少因拉力过大而断芯的隐患。
进一步的,绝缘层201和护套100均由弹性体无卤低烟阻燃聚烯烃材料制成,弹性体无卤低烟阻燃聚烯烃材料阻燃性能优越,当火灾发生时,蔓延速度更慢,烟的浓度低,可见度高,有害气体相对释放量小,不会对人体造成太大危害,方便人员安全转移。
具体地,下面针对本实施例中无卤低烟随行电梯电缆的具体结构进行描述:
考虑电梯电缆需要不同芯数的缆线,在护套100的空腔直径相同的情况下,针对导电线芯200很少的缆线,本实施例还可以包括防止导电线芯200在空腔内相对滑动的绝缘垫芯300,绝缘垫芯300与导电线芯200直径相同,至少一根绝缘垫芯300与至少一根导电线芯200共同成缆形成第二缆线500,一根第二缆线500能够固定在一个空腔内。
如图2、图4所示,绝缘垫芯300可以填充空腔内过大的富裕空间,可以防止空腔内的导电线芯200在电缆频繁弯曲中相互缠绕绞合,绞合后的导电线芯200容易影响导电线芯200的抗弯曲能力,对电缆的使用寿命造成影响。
此外,绝缘垫芯300可以由弹性体无卤低烟阻燃聚烯烃材料制成,在起到填充作用的同时,还可以提升整根缆线的抗拉强度。
本实施例设置第二缆线500具有以下两种类型:
如图4所示,第一种是第二缆线500包括一根绝缘垫芯300和六根导电线芯200,绝缘垫芯300位于第二缆线500中心,六根导电线芯200环绕在绝缘垫芯300设置并均与绝缘垫芯300接触。并且,任意相邻的两根导电线芯200之间还会形成缝隙,该缝隙能够保证 第一缆线400弯曲时,导电线芯200的径向方向有更大的活动空间,使导电线芯200轴向只受到很小的拉力,减少因拉力过大而断芯的隐患。
为了方便描述,上述这种第二缆线500可以称为第一形式第二缆线。
如图2所示,第二种是第二缆线500包括两根绝缘垫芯300和两根导电线芯200,绝缘垫芯300和导电线芯200绕第二缆线500中心间隔设置。并且,两根导电线芯200之间还会形成缝隙,该缝隙能够保证第一缆线400弯曲时,导电线芯200的径向方向有更大的活动空间,使导电线芯200轴向只受到很小的拉力,减少因拉力过大而断芯的隐患。而两根绝缘垫芯300相对地设置于两根导电线芯200两侧之间的空腔内的富裕空间中。
为了方便描述,上述这种第二缆线500可以称为第二形式第二缆线。
根据对不同芯数缆线的需求,还可以具有其他第二缆线500的组合形式。
根据使用导电线芯200直径的不同,也可以使用直径与导电线芯200直径不同的绝缘垫芯300。
还需值得注意的,上述提到的导电线芯200都是圆形线芯,本实施例还可以使用径向截面为其它形状的导电线芯200。
进一步的,无卤低烟随行电梯电缆中还设有连接电梯内部紧急按钮和外界控制箱的缆线,为了防止在电梯出现意外状况时,电梯内部的人因为缆线受到干扰而无法发出求救信号,如图2所示,本实施例设置第一缆线400和/或第二缆线500外表面可以设有屏蔽层800,屏蔽层800外还可以设有与护套100隔离的内护层700。护套100可以包覆于内护层700外。
其中,上述的“和/或”表示第一缆线400和第二缆线500外表面均设有屏蔽层800,或者第一缆线400和第二缆线500中的一个的外表面设有屏蔽层800。
屏蔽层800可以有效缓解周围电气元件对紧急通讯用缆线的干扰,内护层700可以进一步的保障紧急通讯用缆线的绝缘性。
为了方便描述,上述这种外表面设有屏蔽层800及内护层700的第二缆线500可以称为第三形式第二缆线。
进一步的,本实施例设置的屏蔽层800为超柔单丝编制而成,进一步的,屏蔽层800可以为铜丝编织而成,完成屏蔽效果的同时,还满足电缆弯曲时不断丝,使用寿命长。或者,也可以使用铝箔作为屏蔽层800,还可以两者同时使用,进一步保证紧急通讯用缆线的绝缘性。
进一步的,内护层700由弹性体无卤低烟阻燃聚烯烃材料制成。内护层700与护套100形成完全隔离,在面临火灾等其他情况时使护套100破损时,内护层700进一步的保证紧急通讯用缆线的畅通。
进一步的,本实施例还在护套100内还设有增加抗拉力的航空镀锌钢绞线(图中未画出)。
虽然弹性体无卤低烟阻燃聚烯烃材料具有一定的抗拉伸强度,但无卤低烟随行电梯电缆需承受的拉力随着建筑的高度的增高而增高,因此,为了使无卤低烟随行电梯电缆适应各种建筑高度的需求,在护套100的两侧对称设有两根航空镀锌钢绞线。
以下介绍本实施例提供无卤低烟随行电梯电缆的制造方法,该无卤低烟随行电梯电缆的制造方法包括以下步骤:
步骤S101,将多股电工圆铜线绞合并压制形成圆形的导电线芯200。
步骤S102,在导电线芯200外表面包覆绝缘层201。
步骤S103,将由多根导电线芯200共同成缆形成的第一缆线400固定于一护套100内的空腔内,并使相邻导电线芯200之间形成缝隙,其中,空腔为多根并列设置的且呈圆柱体形,并且,每一根第一缆线400固定在一个对应的空腔内;
其中,步骤S102和步骤S103中,绝缘层201和护套100均由弹性体无卤低烟阻燃聚烯烃材料制成。
另外,该方法还可以包括:
步骤S104,将至少一根绝缘垫芯300与至少一根导电线芯200共同成缆形成第二缆线500,其中,绝缘垫芯300用于防止导电线芯200在空腔内相对滑动。
其中,对于第一种第二缆线500,即第一形式第二缆线,步骤S104可以包括:将绝缘垫芯300位于第二缆线500中心,六根导电线芯200环绕在绝缘垫芯300设置并均与绝缘垫芯300接触,共同成缆形成第一形式第二缆线。
对于第二种第二缆线500,即第二形式第二缆线,步骤S104可以包括:将绝缘垫芯300和导电线芯200绕第二缆线500中心间隔设置,共同成缆形成第二形式第二缆线500。
根据对不同芯数缆线的需求,还可以具有其他第二缆线500的组合形式。
根据使用导电线芯200直径的不同,也可以使用直径与导电线芯200直径不同的绝缘垫芯300。
步骤S105,将第二缆线500固定于空腔内,其中,每一根第二缆线500固定在一个对应的空腔内。
另外,该方法还可以包括:
步骤S106,在第一缆线400和/或第二缆线500外表面包覆屏蔽层800。
步骤S107,在屏蔽层800外包覆与护套100隔离的内护层700。
另外,该方法还可以包括:
步骤S108,采用超柔单丝编制形成屏蔽层800。其中,步骤S108在步骤S106之前。 并且,需要说明的是,本实施例设置的屏蔽层800为超柔单丝编制而成,进一步的,屏蔽层800可以为铜丝编织而成,完成屏蔽效果的同时,还满足电缆弯曲时不断丝,使用寿命长。或者,也可以使用铝箔作为屏蔽层800,还可以两者同时使用,进一步保证紧急通讯用缆线的绝缘性。
另外,该方法还可以包括:
步骤S109,采用弹性体无卤低烟阻燃聚烯烃材料制成内护层700。其中,步骤S109在步骤S107之前。
另外,该方法还可以包括:
步骤S110,在护套100内设置增加抗拉力的航空镀锌钢绞线。
可选的,步骤S110中,在护套100的两侧对称设置两根航空镀锌钢绞线。
实施例二
如图1所示,本申请实施例还提供一种无卤低烟随行电梯电缆,包括多股电工圆铜线绞合并压制而成的圆形的导电线芯200以及护套100。
导电线芯200外表面包覆有绝缘层201,多根导电线芯200共同成缆形成第一缆线400,护套100内设有多根并列设置的呈圆柱体形的空腔,一根第一缆线400能够固定在一个空腔内,并使相邻导电线芯200之间形成缝隙。
绝缘层201和护套100均由弹性体无卤低烟阻燃聚烯烃材料制成。
本申请实施例二提供的无卤低烟随行电梯电缆与本申请实施例一提供的无卤低烟随行电梯电缆的区别在于,本实施例中,护套100的横截面呈扁圆形,且护套100的外表面上下侧对称设有若干个凹槽,并且可选的,上述凹槽为三角形凹槽600。当然,凹槽的形状也可以为其他形状,并且凹槽的数量并不作具体限定。其余未提及之处可参考实施例一。
本申请实施例提供的无卤低烟随行电梯电缆包括多股电工圆铜线绞合并压制而成的圆形的导电线芯200以及护套100,其中,导电线芯200外表面包覆有绝缘层201,多根导电线芯200共同成缆形成第一缆线400,护套100内设有多根并列设置的呈圆柱体形的空腔,第一缆线400通过成缆机等固定在空腔内,进一步的,是通过绝缘层201与护套100弹性变形挤压产生摩擦力而使第一缆线400固定在空腔内;此时,由于导电线芯200均为圆形线芯,当其固定在空腔内后,相邻导电线芯200之间还会形成缝隙,该缝隙能够保证第一缆线400弯曲时,导电线芯200的径向方向有更大的活动空间,使导电线芯200轴向只受到很小的拉力,减少因拉力过大而断芯的隐患;
进一步的,绝缘层201和护套100均由弹性体无卤低烟阻燃聚烯烃材料制成,相比于普通聚氯乙烯材料,其弹性更强,抗拉强度也更大,相对的能够使导电线芯200的活动空 间更大,弯曲时产生的轴向拉力更小。
此外,弹性体无卤低烟阻燃聚烯烃材料阻燃性能优越,当火灾发生时,蔓延速度更慢,烟的浓度低,可见度高,有害气体相对释放量小,不会对人体造成太大危害,方便人员安全转移。
进一步的,由于还在护套100的外表面上下侧对称设有若干个三角形凹槽600,以缓解挤塑时的压力,避免护套100表面不平整和中间位置起鼓偏厚,影响护套100的性能。
另外,本实施例中,护套100为一体成型,三角形凹槽600为四个,两两相对地设置于护套100外表面上下侧,从而将护套100分隔成依次连接的第一段、第二段及第三段,其中第一段与第三段的长度大致相等,第二段的长度大于第一段及第二段的长度。
其中,第一段和第三段内均并行设置有一根由七根导电线芯200共同成缆的第一缆线400及一根第一形式第二缆线,其中上述的由七根导电线芯200共同成缆的第一缆线400中,一根导电线芯200位于第一缆线400的中心,六根导电线芯200环绕位于中心的导电线芯200设置并均与位于中心的导电线芯200接触。并且,第一段中由七根导电线芯200共同成缆的第一缆线400远离第三段设置,第三段中由七根导电线芯200共同成缆的第一缆线400远离第一段设置。
第二段内依次并行设置有一根第二形式第二缆线、两根第三形式第二缆线及另一根第二形式第二缆线,并与第一段和第三段中的第一缆线和第二缆线排列成一排。第二段中,相邻的第二形式第二缆线及第三形式第二缆线相互靠近,两根第三形式第二缆线之间具有一定距离。第二段内的两根第二形式第二缆线分别靠近第一段和第三段设置。以下介绍本实施例提供无卤低烟随行电梯电缆的制造方法,该方法未提及的步骤参考实施例一中的制造方法。本实施例提供的无卤低烟随行电梯电缆的制造方法包括以下步骤:
步骤S201,将多股电工圆铜线绞合并压制形成圆形的导电线芯200。
步骤S202,在导电线芯200外表面包覆绝缘层201。
步骤S203,将由多根导电线芯200共同成缆形成的第一缆线400固定于一护套100内的空腔内,并使相邻导电线芯200之间形成缝隙,其中,空腔为多根并列设置的且呈圆柱体形,并且,每一根第一缆线400固定在一个对应的空腔内,护套100的横截面呈扁圆形,且护套100的外表面上下侧对称设有若干个凹槽。可选的,凹槽为三角形凹槽600。
其中,步骤S202和步骤S203,绝缘层201和护套100均由弹性体无卤低烟阻燃聚烯烃材料制成。
另外,本实施例中,步骤S203中,护套100为一体成型,三角形凹槽600为四个,两两相对地设置于护套100外表面上下侧,从而将护套100分隔成依次连接的第一段、第二段及第三段,其中第一段与第三段的长度大致相等,第二段的长度大于第一段及第二段的 长度。
步骤S203包括各将一根由七根导电线芯200共同成缆的第一缆线400及一根第一形式第二缆线并行置于第一段和第三段内。其中上述的由七根导电线芯200共同成缆的第一缆线400中,一根导电线芯200位于第一缆线400的中心,六根导电线芯200环绕位于中心的导电线芯200设置并均与位于中心的导电线芯200接触。并且,第一段中由七根导电线芯200共同成缆的第一缆线400远离第三段设置,第三段中由七根导电线芯200共同成缆的第一缆线400远离第一段设置。
步骤S203还包括将一根第二形式第二缆线、两根第三形式第二缆线及另一根第二形式第二缆线依次并行置于第二段内,使得上述四根缆线与第一段和第三段中的第一缆线400和第二缆线500排列成一排。其中,第二段中,相邻的第二形式第二缆线及第三形式第二缆线相互靠近,两根第三形式第二缆线之间具有一定距离。第二段内的两根第二形式第二缆线分别靠近第一段和第三段设置。
最后应说明的是:以上各实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述各实施例对本申请进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。
工业实用性
本申请提供的无卤低烟随行电梯电缆减少了因拉力过大而断芯的隐患;当火灾发生时,蔓延速度更慢,烟的浓度低,可见度高,有害气体相对释放量小,不会对人体造成太大危害,方便人员安全转移。
本申请提供的另一种无卤低烟随行电梯电缆不但能够实现前述无卤低烟随行电梯电缆的有益效果,还缓解了挤塑时的压力,避免护套表面不平整和中间位置起鼓偏厚,影响护套的性能。

Claims (20)

  1. 一种无卤低烟随行电梯电缆,其特征在于,包括多股电工圆铜线绞合并压制而成的圆形的导电线芯以及护套;
    所述导电线芯外表面包覆有绝缘层,多根所述导电线芯共同成缆形成第一缆线,所述护套内设有多根并列设置的呈圆柱体形的空腔,一根所述第一缆线能够固定在一个所述空腔内,并使相邻所述导电线芯之间形成缝隙;
    所述绝缘层和所述护套均由弹性体无卤低烟阻燃聚烯烃材料制成。
  2. 根据权利要求1所述的无卤低烟随行电梯电缆,其特征在于,还包括防止所述导电线芯在所述空腔内相对滑动的绝缘垫芯,至少一根所述绝缘垫芯与至少一根所述导电线芯共同成缆形成第二缆线,一根所述第二缆线能够固定在一个所述空腔内。
  3. 根据权利要求2所述的无卤低烟随行电梯电缆,其特征在于,所述绝缘垫芯与所述导电线芯直径相同。
  4. 根据权利要求2所述的无卤低烟随行电梯电缆,其特征在于,所述绝缘垫芯由弹性体无卤低烟阻燃聚烯烃材料制成。
  5. 根据权利要求4所述的无卤低烟随行电梯电缆,其特征在于,所述第二缆线包括一根所述绝缘垫芯和六根所述导电线芯,所述绝缘垫芯位于所述第二缆线中心,六根所述导电线芯环绕在所述绝缘垫芯设置并均与所述绝缘垫芯接触。
  6. 根据权利要求4所述的无卤低烟随行电梯电缆,其特征在于,所述第二缆线包括两根所述绝缘垫芯和两根所述导电线芯,所述绝缘垫芯和所述导电线芯绕所述第二缆线中心间隔设置。
  7. 根据权利要求2所述的无卤低烟随行电梯电缆,其特征在于,所述第一缆线和/或所述第二缆线外表面设有屏蔽层,所述屏蔽层外还设有与所述护套隔离的内护层。
  8. 根据权利要求7所述的无卤低烟随行电梯电缆,其特征在于,所述屏蔽层为超柔单丝编制而成。
  9. 根据权利要求7所述的无卤低烟随行电梯电缆,其特征在于,所述屏蔽层为铜丝编织而成的铜网,或者为铝箔,或者为铜丝与铝箔二者共同制成。
  10. 根据权利要求7所述的无卤低烟随行电梯电缆,其特征在于,所述内护层由弹性体无卤低烟阻燃聚烯烃材料制成。
  11. 根据权利要求1-10任一项所述的无卤低烟随行电梯电缆,其特征在于,所述护套内还设有增加抗拉力的航空镀锌钢绞线。
  12. 根据权利要求11所述的无卤低烟随行电梯电缆,其特征在于,所述护套的两侧对称 设有两根所述航空镀锌钢绞线。
  13. 一种无卤低烟随行电梯电缆,其特征在于,包括多股电工圆铜线绞合并压制而成的圆形的导电线芯以及护套;
    所述导电线芯外表面包覆有绝缘层,多根所述导电线芯共同成缆形成第一缆线,所述护套内设有多根并列设置的呈圆柱体形的空腔,一根所述第一缆线能够固定在一个所述空腔内,并使相邻所述导电线芯之间形成缝隙;
    所述绝缘层和所述护套均由弹性体无卤低烟阻燃聚烯烃材料制成;
    所述护套的横截面呈扁圆形,且所述护套的外表面上下侧对称设有若干个凹槽。
  14. 根据权利要求13所述的无卤低烟随行电梯电缆,其特征在于,所述凹槽为三角形凹槽。
  15. 一种无卤低烟随行电梯电缆的制造方法,其特征在于,所述方法包括:
    将多股电工圆铜线绞合并压制形成圆形的导电线芯;
    在所述导电线芯外表面包覆绝缘层;
    将由多根所述导电线芯共同成缆形成的第一缆线固定于一护套内的空腔内,并使相邻所述导电线芯之间形成缝隙,其中,所述空腔为多根并列设置的且呈圆柱体形,并且,每一根所述第一缆线固定在一个对应的所述空腔内;
    所述绝缘层和所述护套均由弹性体无卤低烟阻燃聚烯烃材料制成。
  16. 根据权利要求15所述的无卤低烟随行电梯电缆的制造方法,其特征在于,所述方法还包括:
    将至少一根绝缘垫芯与至少一根所述导电线芯共同成缆形成第二缆线,其中,所述绝缘垫芯用于防止所述导电线芯在所述空腔内相对滑动;
    将所述第二缆线固定于所述空腔内,其中,每一根所述第二缆线固定在一个对应的所述空腔内。
  17. 根据权利要求16所述的无卤低烟随行电梯电缆的制造方法,其特征在于,所述方法还包括:
    在所述第一缆线和/或所述第二缆线外表面包覆屏蔽层;
    在所述屏蔽层外包覆与所述护套隔离的内护层。
  18. 根据权利要求17所述的无卤低烟随行电梯电缆的制造方法,其特征在于,所述方法包括:采用超柔单丝编制形成所述屏蔽层。
  19. 根据权利要求17所述的无卤低烟随行电梯电缆的制造方法,其特征在于,所述方法包括:采用弹性体无卤低烟阻燃聚烯烃材料制成所述内护层。
  20. 一种无卤低烟随行电梯电缆的制造方法,其特征在于,包括:
    将多股电工圆铜线绞合并压制形成圆形的导电线芯;
    在所述导电线芯外表面包覆绝缘层;
    将由多根所述导电线芯共同成缆形成的第一缆线固定于一护套内的空腔内,并使相邻所述导电线芯之间形成缝隙,其中,所述空腔为多根并列设置的且呈圆柱体形,并且,每一根所述第一缆线固定在一个对应的所述空腔内,所述护套的横截面呈扁圆形,且所述护套的外表面上下侧对称设有若干个凹槽;
    所述绝缘层和所述护套均由弹性体无卤低烟阻燃聚烯烃材料制成。
PCT/CN2017/098409 2017-04-10 2017-08-22 无卤低烟随行电梯电缆及其制造方法 WO2018188245A1 (zh)

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CN114664485A (zh) * 2022-03-21 2022-06-24 海安巨人新材料科技有限公司 一种增强型电梯扁平随行电缆

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