CN105931744A - Halogen-free flame-retardant fireproof power cable for tunnel - Google Patents

Halogen-free flame-retardant fireproof power cable for tunnel Download PDF

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Publication number
CN105931744A
CN105931744A CN201610433145.XA CN201610433145A CN105931744A CN 105931744 A CN105931744 A CN 105931744A CN 201610433145 A CN201610433145 A CN 201610433145A CN 105931744 A CN105931744 A CN 105931744A
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China
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sheath unit
insulated wire
wire cores
conductor
sheath
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Chinese (zh)
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灏圭孩
尹红
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Individual
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Priority to CN201610433145.XA priority Critical patent/CN105931744A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/08—Flat or ribbon cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/08—Flat or ribbon cables
    • H01B7/0807—Twin conductor or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/08—Flat or ribbon cables
    • H01B7/0869—Flat or ribbon cables comprising one or more armouring, tensile- or compression-resistant elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/185—Sheaths comprising internal cavities or channels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1875—Multi-layer sheaths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/428—Heat conduction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/006—Constructional features relating to the conductors

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  • Insulated Conductors (AREA)

Abstract

The invention belongs to the technical field of cables, and relates to a halogen-free flame-retardant fireproof power cable for a tunnel. The halogen-free flame-retardant fireproof power cable for the tunnel comprises a first insulated wire core, a second insulated wire core and a sheath layer, wherein the first insulated wire core comprises a first conductor and a first insulating layer; the first insulating layer coats the first conductor; the second insulated wire core comprises a second conductor and a second insulating layer; the second insulating layer coats the second conductor; the diameter of the first insulated wire core is equal to that of the second insulated wire core; the halogen-free flame-retardant fireproof power cable for the tunnel is characterized in that the sheath layer comprises a first sheath unit, a second sheath unit and a third sheath unit; the third sheath unit connects the first sheath unit and the second sheath unit; the sheath layer is integrally formed; a hollow cavity is formed in each sheath unit; and the insulated wire cores are located in the corresponding hollow cavities. A special material is adopted by the first insulating layer, the second insulating layer and a third insulating layer. The halogen-free flame-retardant fireproof power cable for the tunnel has the main technical effects of being relatively excellent in flame retardant property, relatively high in current carrying capacity, relatively excellent in fireproof performance and relatively flexible to use.

Description

A kind of tunnel halogen-free flameproof fire proof power cable
The application is entitled: a kind of halogen-free flameproof fireproof cable, filing date: on 06 09th, 2015, the divisional application of the patent of invention of Application No.: 201510309923.X.
Technical field
The invention belongs to technical field of cables, especially relate to a kind of tunnel halogen-free flameproof fire proof power cable.
Background technology
In prior art, the covered wire in cable is close to mutually with sheath, is unfavorable for the heat radiation of cable, fires in short time and covered wire when a fire during pole, and therefore, fire-retardant and flameproof effect is not very good.Therefore, in industry in addition to expecting fire proofing and improving, also it is desirable to carrying out rational modification in configuration aspects, the fire resistance making cable is more excellent.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to disclose a kind of tunnel halogen-free flameproof fire proof power cable, it realizes by the following technical solutions.
In first embodiment of the present invention, a kind of tunnel halogen-free flameproof fire proof power cable, it is by the first insulated wire cores, the second insulated wire cores, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor and the first insulating barrier of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor and the second insulating barrier of being enveloped by the second conductor, the diameter of the first insulated wire cores and the equal diameters of the second insulated wire cores；It is characterized in that described restrictive coating is constituted by the first sheath unit, the second sheath unit and by the 3rd sheath unit that the first sheath unit and the second sheath unit couple together, restrictive coating is formed as one；nullThere is inside first sheath unit the first cavity，There is inside second sheath unit the second cavity，First insulated wire cores is positioned in the first cavity，Second insulated wire cores is positioned in the second cavity，The shape of cross section of the first sheath unit is a part for cylindrical annular，The shape of cross section of the second sheath unit is a part for cylindrical annular，The upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit，The lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit，It is formed with channel lumens between top and the bottom of the 3rd sheath unit of the 3rd sheath unit,The upper surface on the top of the 3rd sheath unit is plane，The lower surface of the bottom of the 3rd sheath unit is plane，The upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface.
In second embodiment of the present invention, a kind of tunnel halogen-free flameproof fire proof power cable, it is by the first insulated wire cores, the second insulated wire cores, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor and the first insulating barrier of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor and the second insulating barrier of being enveloped by the second conductor, the diameter of the first insulated wire cores and the equal diameters of the second insulated wire cores；It is characterized in that described restrictive coating is constituted by the first sheath unit, the second sheath unit and by the 3rd sheath unit that the first sheath unit and the second sheath unit couple together, restrictive coating is formed as one；nullThere is inside first sheath unit the first cavity，There is inside second sheath unit the second cavity，First insulated wire cores is positioned in the first cavity，Second insulated wire cores is positioned in the second cavity，The shape of cross section of the first sheath unit is a part for cylindrical annular，The shape of cross section of the second sheath unit is a part for cylindrical annular，The upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit，The lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit，It is formed with channel lumens between top and the bottom of the 3rd sheath unit of the 3rd sheath unit,The upper surface on the top of the 3rd sheath unit is cambered surface，The lower surface of the bottom of the 3rd sheath unit is cambered surface,The upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface，The top of the 3rd sheath unit upper、The cambered surface protrusion direction of lower surface is consistent；The cambered surface protrusion direction on the upper and lower surface of the bottom of the 3rd sheath unit is consistent.
In 3rd embodiment of the present invention, a kind of tunnel halogen-free flameproof fire proof power cable, it is by the first insulated wire cores, the second insulated wire cores, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor and the first insulating barrier of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor and the second insulating barrier of being enveloped by the second conductor, and the diameter of the first insulated wire cores is less than the diameter of the second insulated wire cores；It is characterized in that described restrictive coating is constituted by the first sheath unit, the second sheath unit and by the 3rd sheath unit that the first sheath unit and the second sheath unit couple together, restrictive coating is formed as one；nullThere is inside first sheath unit the first cavity，There is inside second sheath unit the second cavity，First insulated wire cores is positioned in the first cavity，Second insulated wire cores is positioned in the second cavity，The shape of cross section of the first sheath unit is a part for cylindrical annular，The shape of cross section of the second sheath unit is a part for cylindrical annular，The upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit，The lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit，It is formed with channel lumens between top and the bottom of the 3rd sheath unit of the 3rd sheath unit,The upper surface on the top of the 3rd sheath unit is cambered surface，The lower surface of the bottom of the 3rd sheath unit is cambered surface,The upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface，The top of the 3rd sheath unit upper、The cambered surface protrusion direction of lower surface is consistent；The cambered surface protrusion direction on the upper and lower surface of the bottom of the 3rd sheath unit is consistent.
In 4th embodiment of the present invention, a kind of tunnel halogen-free flameproof fire proof power cable, it is by the first insulated wire cores, the second insulated wire cores, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor and the first insulating barrier of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor and the second insulating barrier of being enveloped by the second conductor, the diameter of the first insulated wire cores and the equal diameters of the second insulated wire cores；It is characterized in that described restrictive coating is constituted by the first sheath unit, the second sheath unit and by the 3rd sheath unit that the first sheath unit and the second sheath unit couple together, restrictive coating is formed as one；nullThere is inside first sheath unit the first cavity，There is inside second sheath unit the second cavity，First insulated wire cores is positioned in the first cavity，Second insulated wire cores is positioned in the second cavity，The shape of cross section of the first sheath unit is a part for cylindrical annular，The shape of cross section of the second sheath unit is a part for cylindrical annular，The upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit，The lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit，It is formed with channel lumens between top and the bottom of the 3rd sheath unit of the 3rd sheath unit,Have in channel lumens by the 3rd conductor and the 3rd insulated wire cores that the 3rd insulating barrier that the 3rd conductor envelopes is constituted，The upper surface on the top of the 3rd sheath unit is plane，The lower surface of the bottom of the 3rd sheath unit is plane，The upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface.
In 5th embodiment of the present invention, a kind of tunnel halogen-free flameproof fire proof power cable, it is by the first insulated wire cores, the second insulated wire cores, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor and the first insulating barrier of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor and the second insulating barrier of being enveloped by the second conductor, the diameter of the first insulated wire cores and the equal diameters of the second insulated wire cores；It is characterized in that described restrictive coating is constituted by the first sheath unit, the second sheath unit and by the 3rd sheath unit that the first sheath unit and the second sheath unit couple together, restrictive coating is formed as one；There is inside first sheath unit the first cavity, there is inside second sheath unit the second cavity, first insulated wire cores is positioned in the first cavity, second insulated wire cores is positioned in the second cavity, the shape of cross section of the first sheath unit is a part for cylindrical annular, the shape of cross section of the second sheath unit is a part for cylindrical annular, the upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit, the lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit, it is formed with channel lumens between top and the bottom of the 3rd sheath unit of the 3rd sheath unit, have by the 3rd conductor and the 3rd insulated wire cores that the 3rd insulating barrier that the 3rd conductor envelopes is constituted in channel lumens, on 3rd insulating barrier, lower surface corresponding position has raised line；The upper surface corresponding position of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit has groove, the upper surface on the top of the 3rd sheath unit is plane, the lower surface of the bottom of the 3rd sheath unit is plane, and the upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface；A part for raised line is inserted in a groove.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, it is characterised in that the minimum constructive height of described channel lumens is less than the external diameter of the first insulated wire cores.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, it is characterised in that the minimum constructive height of described channel lumens is less than the external diameter of the second insulated wire cores.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, it is characterised in that the elongation at break of described restrictive coating is 500～800%；Resile after restrictive coating elastic deformation 500～800% time of shape is 3～10 seconds.
When bigger pressure, first/second insulated wire cores can be single by entering cavity the most then in channel lumens, then the second/the first insulated wire cores of opposite side can be single by entering cavity the most then in channel lumens, it is achieved the location swap of insulated wire cores.
In the present invention, owing to the first insulated wire cores, the second insulated wire cores are respectively implanted in the first cavity, the second cavity, and first insulated wire cores, the diameter of the second insulated wire cores are respectively smaller than the first sheath unit, the internal diameter of the second sheath unit, therefore, first insulated wire cores, the second insulated wire cores respectively and have gap between the first sheath unit, the second sheath unit, cable is when placing, insulated wire cores and sheath unit are linear contact lay, therefore, cable cover(ing) is when burning, the time that flame makes insulated wire cores burn is longer, and the fire resistance of cable is more excellent；Further, since the existence in gap, electric cable heating is made to rapidly be release so that the current-carrying capacity of cable is bigger, and the conductor of same cross section specification, when same cable temperature, the current-carrying capacity of the present invention can improve more than 10%.The existence of channel lumens so that during cabling, the first insulated wire cores can be changed with the second insulated wire cores position, thus eliminate substantially beating of visible part and turn round phenomenon.
Therefore, the present invention has following main Advantageous Effects: fire resistance is more excellent, current-carrying capacity is bigger, it is more flexible to use.
Accompanying drawing explanation
Fig. 1 is the perspective view after one section of dissection of embodiment 1 of the present invention.
Fig. 2 is the cross-sectional structure schematic diagram of Fig. 1.
Fig. 3 is the perspective view after one section of dissection of embodiment 2 of the present invention.
Fig. 4 is the cross-sectional structure schematic diagram of Fig. 3.
Fig. 5 is the cross-sectional structure schematic diagram of embodiment 3 of the present invention.
Fig. 6 is the perspective view after one section of dissection of embodiment 4 of the present invention.
Fig. 7 is the cross-sectional structure schematic diagram of Fig. 6.
Fig. 8 is the perspective view after one section of dissection of embodiment 5 of the present invention.
Fig. 9 is the cross-sectional structure schematic diagram of Fig. 8.
Detailed description of the invention
Embodiment 1
Ask for an interview Fig. 1 and Fig. 2, a kind of tunnel halogen-free flameproof fire proof power cable, it is by first insulated wire cores the 1, second insulated wire cores 2, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor 11 and the first insulating barrier 12 of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor 21 and the second insulating barrier 22 of being enveloped by the second conductor, the diameter of the first insulated wire cores and the equal diameters of the second insulated wire cores；It is characterized in that the 3rd sheath unit 34 that the first sheath unit and the second sheath unit couple together by first sheath unit the 14, second sheath unit 24 and is constituted by described restrictive coating, restrictive coating is formed as one；nullThere is inside first sheath unit the first cavity 13，There is inside second sheath unit the second cavity 23，First insulated wire cores is positioned in the first cavity，Second insulated wire cores is positioned in the second cavity，The shape of cross section of the first sheath unit is a part for cylindrical annular，The shape of cross section of the second sheath unit is a part for cylindrical annular，The upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit，The lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit，It is formed with channel lumens 33 between top and the bottom of the 3rd sheath unit of the 3rd sheath unit,The upper surface on the top of the 3rd sheath unit is plane，The lower surface of the bottom of the 3rd sheath unit is plane，The upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface.
Embodiment 2
Ask for an interview Fig. 3 and Fig. 4, a kind of tunnel halogen-free flameproof fire proof power cable, it is by first insulated wire cores the 1, second insulated wire cores 2, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor 11 and the first insulating barrier 12 of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor 21 and the second insulating barrier 22 of being enveloped by the second conductor, the diameter of the first insulated wire cores and the equal diameters of the second insulated wire cores；It is characterized in that the 3rd sheath unit 34 that the first sheath unit and the second sheath unit couple together by first sheath unit the 14, second sheath unit 24 and is constituted by described restrictive coating, restrictive coating is formed as one；nullThere is inside first sheath unit the first cavity 13，There is inside second sheath unit the second cavity 23，First insulated wire cores is positioned in the first cavity，Second insulated wire cores is positioned in the second cavity，The shape of cross section of the first sheath unit is a part for cylindrical annular，The shape of cross section of the second sheath unit is a part for cylindrical annular，The upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit，The lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit，It is formed with channel lumens 33 between top and the bottom of the 3rd sheath unit of the 3rd sheath unit,The upper surface on the top of the 3rd sheath unit is cambered surface，The lower surface of the bottom of the 3rd sheath unit is cambered surface,The upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface，The top of the 3rd sheath unit upper、The cambered surface protrusion direction of lower surface is consistent；The cambered surface protrusion direction on the upper and lower surface of the bottom of the 3rd sheath unit is consistent.
Embodiment 3
Ask for an interview Fig. 5, and with reference to Fig. 3 and Fig. 4, a kind of tunnel halogen-free flameproof fire proof power cable, it is by first insulated wire cores the 1, second insulated wire cores 2, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor 11 and the first insulating barrier 12 of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor 21 and the second insulating barrier 22 of being enveloped by the second conductor, and the diameter of the first insulated wire cores is less than the diameter of the second insulated wire cores；It is characterized in that the 3rd sheath unit 34 that the first sheath unit and the second sheath unit couple together by first sheath unit the 14, second sheath unit 24 and is constituted by described restrictive coating, restrictive coating is formed as one；nullThere is inside first sheath unit the first cavity 13，There is inside second sheath unit the second cavity 23，First insulated wire cores is positioned in the first cavity，Second insulated wire cores is positioned in the second cavity，The shape of cross section of the first sheath unit is a part for cylindrical annular，The shape of cross section of the second sheath unit is a part for cylindrical annular，The upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit，The lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit，It is formed with channel lumens 33 between top and the bottom of the 3rd sheath unit of the 3rd sheath unit,The upper surface on the top of the 3rd sheath unit is cambered surface，The lower surface of the bottom of the 3rd sheath unit is cambered surface,The upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface，The top of the 3rd sheath unit upper、The cambered surface protrusion direction of lower surface is consistent；The cambered surface protrusion direction on the upper and lower surface of the bottom of the 3rd sheath unit is consistent.
Embodiment 4
Ask for an interview Fig. 6 and Fig. 7, a kind of tunnel halogen-free flameproof fire proof power cable, it is by first insulated wire cores the 1, second insulated wire cores 2, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor 11 and the first insulating barrier 12 of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor 21 and the second insulating barrier 22 of being enveloped by the second conductor, the diameter of the first insulated wire cores and the equal diameters of the second insulated wire cores；It is characterized in that the 3rd sheath unit 34 that the first sheath unit and the second sheath unit couple together by first sheath unit the 14, second sheath unit 24 and is constituted by described restrictive coating, restrictive coating is formed as one；nullThere is inside first sheath unit the first cavity 13，There is inside second sheath unit the second cavity 23，First insulated wire cores is positioned in the first cavity，Second insulated wire cores is positioned in the second cavity，The shape of cross section of the first sheath unit is a part for cylindrical annular，The shape of cross section of the second sheath unit is a part for cylindrical annular，The upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit，The lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit，It is formed with channel lumens 33 between top and the bottom of the 3rd sheath unit of the 3rd sheath unit,Have in channel lumens by the 3rd conductor 31 and the 3rd insulated wire cores 3 that the 3rd insulating barrier 32 that the 3rd conductor envelopes is constituted，The upper surface on the top of the 3rd sheath unit is plane，The lower surface of the bottom of the 3rd sheath unit is plane，The upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface.
Embodiment 5
Ask for an interview Fig. 8 and Fig. 9, a kind of tunnel halogen-free flameproof fire proof power cable, it is by first insulated wire cores the 1, second insulated wire cores 2, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor 11 and the first insulating barrier 12 of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor 21 and the second insulating barrier 22 of being enveloped by the second conductor, the diameter of the first insulated wire cores and the equal diameters of the second insulated wire cores；It is characterized in that the 3rd sheath unit 34 that the first sheath unit and the second sheath unit couple together by first sheath unit the 14, second sheath unit 24 and is constituted by described restrictive coating, restrictive coating is formed as one；nullThere is inside first sheath unit the first cavity 13，There is inside second sheath unit the second cavity 23，First insulated wire cores is positioned in the first cavity，Second insulated wire cores is positioned in the second cavity，The shape of cross section of the first sheath unit is a part for cylindrical annular，The shape of cross section of the second sheath unit is a part for cylindrical annular，The upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit，The lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit，It is formed with channel lumens 33 between top and the bottom of the 3rd sheath unit of the 3rd sheath unit,Have in channel lumens by the 3rd conductor 31 and the 3rd insulated wire cores 3 that the 3rd insulating barrier 32 that the 3rd conductor envelopes is constituted，On 3rd insulating barrier、Lower surface corresponding position has raised line 30；The upper surface corresponding position of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit has groove 341, the upper surface on the top of the 3rd sheath unit is plane, the lower surface of the bottom of the 3rd sheath unit is plane, and the upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface；A part for raised line is inserted in a groove.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, it is characterised in that the diameter of described first insulated wire cores is less than the internal diameter of the first sheath unit.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, it is characterised in that the diameter of described second insulated wire cores is less than the internal diameter of the second sheath unit.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, the material that it is characterized in that described restrictive coating is bittern-free flame-proof material, and described bittern-free flame-proof material is low smoke and zero halogen polyethylene or Halogen elastomeric material or the material comprising following raw material based on weight part:
Low Density Polyethylene or medium density polyethylene: 10～40 parts；
Styrenic elastomer: 25～50 parts；
Polyolefin elastomer: 10～45 parts；
Polyphenylene oxide resin: 30～50 parts；
Polybutylene terephthalate (PBT): 10～20 parts；
Nylon 6 or nylon 12 or nylon66 fiber: 3～5 parts；
Model is 4010 naphthenic base white oils or model is 4006 naphthenic base white oils or model is 90# white oil or 5# hydrogen white oil: 5～8 parts；
Aluminium hydroxide: 15～30 parts；
Magnesium hydroxide: 15～30 parts；
Full-size is less than the SiO 2 powder of 15 μm: 10～20 parts；
Silicone oil or Tissuemat E or paraffin: 1～5 part；
Cumyl peroxide: 1～3 part；
Dilauryl thiodipropionate or diphosphorous acid tetramethylolmethane distearyl alcohol ester or the plastics antioxidant that commercially available model is 1010: 1～3 part；
Model is UVP-327 or model is UV-234 or model is the UV absorbent of UV-360: 0.1～0.3 part；
Commercially available model is the light stabilizer of 744 or HPT: 0.1～0.2 part；
Carbon black: 3～5 parts.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, it is characterised in that described first insulating barrier, the second insulating barrier, the material of the 3rd insulating barrier are all bittern-free flame-proof materials, preferably less than cigarette halogen-free polyvinyl or Halogen elastomeric material.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, it is characterised in that described first conductor, the material of the second conductor are all copper or aluminum or alloy.
A kind of tunnel halogen-free flameproof fire proof power cable described above, it is characterised in that the material of described 3rd conductor is copper or aluminum or alloy.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, it is characterised in that the minimum constructive height of described channel lumens is less than the external diameter of the first insulated wire cores.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, it is characterised in that the minimum constructive height of described channel lumens is less than the external diameter of the second insulated wire cores.
A kind of tunnel halogen-free flameproof fire proof power cable described in any of the above-described embodiment, it is characterised in that the elongation at break of described restrictive coating is 500～800%；Resile after restrictive coating elastic deformation 500～800% time of shape is 3～10 seconds.
When bigger pressure, first/second insulated wire cores can be single by entering cavity the most then in channel lumens, then the second/the first insulated wire cores of opposite side can be single by entering cavity the most then in channel lumens, it is achieved the location swap of insulated wire cores.
When having three insulated wire cores, owing to the 3rd insulated wire cores diameter is less than the larger-diameter insulated wire cores in first/second insulated wire cores, therefore can conveniently enter in first/second cavity.
In the present invention, owing to the first insulated wire cores, the second insulated wire cores are respectively implanted in the first cavity, the second cavity, and first insulated wire cores, the diameter of the second insulated wire cores are respectively smaller than the first sheath unit, the internal diameter of the second sheath unit, therefore, first insulated wire cores, the second insulated wire cores respectively and have gap between the first sheath unit, the second sheath unit, cable is when placing, insulated wire cores and sheath unit are linear contact lay, therefore, cable cover(ing) is when burning, the time that flame makes insulated wire cores burn is longer, and the fire resistance of cable is more excellent；Further, since the existence in gap, electric cable heating is made to rapidly be release so that the current-carrying capacity of cable is bigger, and the conductor of same cross section specification, when same cable temperature, the current-carrying capacity of the present invention can improve more than 10%.The existence of channel lumens so that during cabling, the first insulated wire cores can be changed with the second insulated wire cores position, thus eliminate substantially beating of visible part and turn round phenomenon.
In the present invention, when the material of restrictive coating is special formula, use styrene series elastomer, polyolefin elastomer, polyester and Halogen based flame retardant polyphenylene ether carry out blending and modifying, the each group partition inter-capacitive of matrix resin is good, present invention process improves the original poor fluidity of polyphenylene oxide, melt viscosity is high and goods are susceptible to the shortcomings such as stress cracking, simultaneously, it is excellent that the designed halogen-free flame-retardant thermoplastic elastomer electrical cable material produced of the present invention has processing characteristics, halogen-free flameproof grade is high, density is light, tear resistance is good, acid-proof alkaline is good and weather resistance, water resistance and anti-cracking performance are particularly pertinent.Under 85 DEG C and 85 humidity environments, after 4000 hours aging, not separating out, mechanical and physical performance is maintained at more than 96%, and electrical property is without substantially changing.130 DEG C, under 1h and 10Kg loading conditions, there is not cracking phenomena.
The present invention adds styrene series elastomer and the extraordinary polyolefin of property compatible and elastomer thereof, magnesium hydroxide and aluminium hydroxide dispersed with make in polyphenylene oxide resin, improve biphase affinity, the stress decreasing interface is concentrated, making the present invention reach the technique effect of optimum at fire-retardant aspect, the goods toughness of production is high, high and low temperature resistance is good, environmental stress cracking resistance is also improved.
The fire retardant used in the present invention, has environment-protecting asepsis, flame retarding efficiency advantages of higher.In the present invention, polybutylene terephthalate (PBT), nylon 6 or nylon 12 or the existence of nylon66 fiber, making processing characteristics more preferable, the mobile performance of material is more excellent, simultaneously, owing to it has preferable hardness, therefore, there is more excellent anti-wear performance, after cable of the prior art is released, when being wound on cable hank, cable surface just has obvious drag mark again；And after making this manufacture of materials cable, through 20 subnormal folding and unfoldings, do not find the abrasion of cable surface, mill flower phenomenon；Due to the existence of UV absorbent, light stabilizer and carbon black in the present invention, the product outdoor length in the annual Exposure to Sunlight time more than 280 days is made to use 3 years continuously, cable cover(ing) has no eyesight visible crack, takes off cable cover(ing) and measures tensile strength, only reduces 1.6%；And use the material in CN103627064A, CN102120842A, CN200810200933.X, CN200810207933., CN200810028374.9, CN101724192, CN200710168264.8, CN103289162, CN103467818A, CN104311963A, construct on the same day, after using same 3 years, taking off measurement, the minima that cable cover(ing) tensile strength reduces also reaches 8.9%.
Flame-retardant sheath material in the present invention, compared with the steady production speed the highest with above-mentioned material of the prior art, stabilized speed adds 22%；Flame-retardant sheath material in the present invention, compared with the lowest price of above-mentioned material of the prior art, have dropped 7.61%.
Existence due to SiO 2 powder so that restrictive coating has excellent fire protecting performance；Certain first insulating barrier, the second insulating barrier, the material of the 3rd insulating barrier also can be bittern-free flame-proof material described above, or only be not all bittern-free flame-proof material described above；In this case, fire-retardant and flameproof effect significantly improves.
Therefore, the present invention has following main Advantageous Effects: fire resistance is more excellent, current-carrying capacity is bigger, fire protecting performance is more excellent, it is more flexible to use.
The present invention is not limited to above-mentioned preferred forms, it will be appreciated that the design of the present invention can be implemented to use by other various forms, and they also fall within protection scope of the present invention.

Claims (7)

1. a tunnel halogen-free flameproof fire proof power cable, it is by the first insulated wire cores, the second insulated wire cores, constitute the restrictive coating that the first insulated wire cores and the second insulated wire cores envelope, first insulated wire cores is made up of the first conductor and the first insulating barrier of being enveloped by the first conductor, second insulated wire cores is made up of the second conductor and the second insulating barrier of being enveloped by the second conductor, the diameter of the first insulated wire cores and the equal diameters of the second insulated wire cores；It is characterized in that described restrictive coating is constituted by the first sheath unit, the second sheath unit and by the 3rd sheath unit that the first sheath unit and the second sheath unit couple together, restrictive coating is formed as one；nullThere is inside first sheath unit the first cavity，There is inside second sheath unit the second cavity，First insulated wire cores is positioned in the first cavity，Second insulated wire cores is positioned in the second cavity，The shape of cross section of the first sheath unit is a part for cylindrical annular，The shape of cross section of the second sheath unit is a part for cylindrical annular，The upper end of the first sheath unit and the second sheath unit is coupled together by the top of the 3rd sheath unit，The lower end of the first sheath unit and the second sheath unit is coupled together by the bottom of the 3rd sheath unit，It is formed with channel lumens between top and the bottom of the 3rd sheath unit of the 3rd sheath unit,Have in channel lumens by the 3rd conductor and the 3rd insulated wire cores that the 3rd insulating barrier that the 3rd conductor envelopes is constituted，The upper surface on the top of the 3rd sheath unit is plane，The lower surface of the bottom of the 3rd sheath unit is plane，The upper surface of the lower surface on the top of the 3rd sheath unit and the bottom of the 3rd sheath unit is relatively protruding cambered surface；The minimum constructive height of described channel lumens is less than the external diameter of the first insulated wire cores, and the minimum constructive height of channel lumens is less than the external diameter of the second insulated wire cores；The elongation at break of described restrictive coating is 500～800%；Resile after restrictive coating elastic deformation 500～800% time of shape is 3～10 seconds；Described first insulating barrier, the second insulating barrier, the material of the 3rd insulating barrier are all bittern-free flame-proof materials, and described bittern-free flame-proof material, based on weight part, comprises following raw material:
Low Density Polyethylene or medium density polyethylene: 10～40 parts；
Styrenic elastomer: 25～50 parts；
Polyolefin elastomer: 10～45 parts；
Polyphenylene oxide resin: 30～50 parts；
Polybutylene terephthalate (PBT): 10～20 parts；
Nylon 6 or nylon 12 or nylon66 fiber: 3～5 parts；
Model is 4010 naphthenic base white oils or model is 4006 naphthenic base white oils or model is 90# white oil or 5# hydrogen white oil: 5～8 parts；
Aluminium hydroxide: 15～30 parts；
Magnesium hydroxide: 15～30 parts；
Full-size is less than the SiO 2 powder of 15 μm: 10～20 parts；
Silicone oil or Tissuemat E or paraffin: 1～5 part；
Cumyl peroxide: 1～3 part；
Dilauryl thiodipropionate or diphosphorous acid tetramethylolmethane distearyl alcohol ester or the plastics antioxidant that commercially available model is 1010: 1～3 part；
Model is UVP-327 or model is UV-234 or model is the UV absorbent of UV-360: 0.1～0.3 part；
Commercially available model is the light stabilizer of 744 or HPT: 0.1～0.2 part；
Carbon black: 3～5 parts.
A kind of tunnel the most according to claim 1 halogen-free flameproof fire proof power cable, it is characterised in that the diameter of described first insulated wire cores is less than the internal diameter of the first sheath unit.
3. according to a kind of tunnel halogen-free flameproof fire proof power cable described in claim 1 or claim 2, it is characterised in that the minimum constructive height of described channel lumens is less than the external diameter of the first insulated wire cores, and the minimum constructive height of channel lumens is less than the external diameter of the second insulated wire cores.
A kind of tunnel the most according to claim 3 halogen-free flameproof fire proof power cable, it is characterised in that the diameter of described second insulated wire cores is less than the internal diameter of the second sheath unit.
A kind of tunnel the most according to claim 3 halogen-free flameproof fire proof power cable, it is characterised in that described first conductor, the material of the second conductor are all copper or aluminum or alloy.
6. according to a kind of tunnel halogen-free flameproof fire proof power cable described in claim 1 or claim 2, it is characterised in that the diameter of described second insulated wire cores is less than the internal diameter of the second sheath unit.
A kind of tunnel the most according to claim 6 halogen-free flameproof fire proof power cable, it is characterised in that described first conductor, the material of the second conductor are all copper or aluminum or alloy.
CN201610433145.XA 2015-06-09 2015-06-09 Halogen-free flame-retardant fireproof power cable for tunnel Pending CN105931744A (en)

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CN201610401586.1A Pending CN105869737A (en) 2015-06-09 2015-06-09 Halogen-free flame retardant fireproof cable for communication machine room
CN201610401563.0A Pending CN106024157A (en) 2015-06-09 2015-06-09 Flame-retardant fireproof cable
CN201510309923.XA Expired - Fee Related CN104882209B (en) 2015-06-09 2015-06-09 Halogen-free flame-retardant fireproof cable
CN201610386749.3A Pending CN106098220A (en) 2015-06-09 2015-06-09 A kind of fire protection flame retarding cable
CN201610433130.3A Pending CN106128573A (en) 2015-06-09 2015-06-09 A kind of rack flexible structure halogen-free flameproof fire proof power cable
CN201610401562.6A Pending CN106024141A (en) 2015-06-09 2015-06-09 Halogen-free flame-retardant fireproof cable used for subway
CN201610433202.4A Pending CN105845245A (en) 2015-06-09 2015-06-09 Halogen-free flame-retardant fireproof power cable used for high-speed railway
CN201610433303.1A Pending CN106128578A (en) 2015-06-09 2015-06-09 A kind of halogen-free flameproof fire proof power cable for building
CN201610401561.1A Pending CN106098190A (en) 2015-06-09 2015-06-09 A kind of halogen-free flameproof fireproof cable
CN201610401564.5A Pending CN106098221A (en) 2015-06-09 2015-06-09 A kind of rack halogen-free flameproof fireproof cable
CN201610433145.XA Pending CN105931744A (en) 2015-06-09 2015-06-09 Halogen-free flame-retardant fireproof power cable for tunnel
CN201610433244.8A Pending CN106128611A (en) 2015-06-09 2015-06-09 A kind of power network halogen-free flameproof fire proof power cable

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CN201610401586.1A Pending CN105869737A (en) 2015-06-09 2015-06-09 Halogen-free flame retardant fireproof cable for communication machine room
CN201610401563.0A Pending CN106024157A (en) 2015-06-09 2015-06-09 Flame-retardant fireproof cable
CN201510309923.XA Expired - Fee Related CN104882209B (en) 2015-06-09 2015-06-09 Halogen-free flame-retardant fireproof cable
CN201610386749.3A Pending CN106098220A (en) 2015-06-09 2015-06-09 A kind of fire protection flame retarding cable
CN201610433130.3A Pending CN106128573A (en) 2015-06-09 2015-06-09 A kind of rack flexible structure halogen-free flameproof fire proof power cable
CN201610401562.6A Pending CN106024141A (en) 2015-06-09 2015-06-09 Halogen-free flame-retardant fireproof cable used for subway
CN201610433202.4A Pending CN105845245A (en) 2015-06-09 2015-06-09 Halogen-free flame-retardant fireproof power cable used for high-speed railway
CN201610433303.1A Pending CN106128578A (en) 2015-06-09 2015-06-09 A kind of halogen-free flameproof fire proof power cable for building
CN201610401561.1A Pending CN106098190A (en) 2015-06-09 2015-06-09 A kind of halogen-free flameproof fireproof cable
CN201610401564.5A Pending CN106098221A (en) 2015-06-09 2015-06-09 A kind of rack halogen-free flameproof fireproof cable

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CN105845245A (en) 2016-08-10
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CN106128573A (en) 2016-11-16
CN106098221A (en) 2016-11-09

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Application publication date: 20160907