CN110364902A - Middle pressure fireproof cable connection method and middle pressure fireproof cable - Google Patents
Middle pressure fireproof cable connection method and middle pressure fireproof cable Download PDFInfo
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- CN110364902A CN110364902A CN201910738628.4A CN201910738628A CN110364902A CN 110364902 A CN110364902 A CN 110364902A CN 201910738628 A CN201910738628 A CN 201910738628A CN 110364902 A CN110364902 A CN 110364902A
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- conducting wire
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- joint portion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/027—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of semi-conducting layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/005—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
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- Manufacturing & Machinery (AREA)
- Cable Accessories (AREA)
Abstract
The present invention, which provides, presses fireproof cable connection method and middle pressure fireproof cable in one kind, be related to field of cable technology.This method comprises: removing the protective layer of the first cable and the second cable that are connected to respectively, so that the first cable exposes a plurality of conducting wire, the second cable exposes a plurality of conducting wire；One conducting wire of every conducting wire of the first cable and the second cable is subjected to dislocation welding, obtains the transition joint portion of the first cable and the second cable；Shielding and insulation processing are carried out to each conducting wire in intermediate connector portions, obtain multiple sub-line cables；It is coated after being filled to the gap of adjacent sub-line cable in multiple sub-line cables, obtains the core in transition joint portion；The gap for the protective layer that intermediate connector portions separate is welded, the cable after being connected.By carrying out shielding and insulation processing to conducting wire, sub- cable is obtained, the filling of sub- cable and cladding are handled to obtain core, the gap of protective layer is welded, the connection of fireproof cable is pressed in realization, the fire protecting performance at cable connection is effectively ensured.
Description
Technical field
The present invention relates to field of cable technology, anti-in particular to pressure fireproof cable connection method in one kind and middle pressure
Thermoelectricity cable.
Background technique
Middle pressure fireproof cable has good fire resistance, in skyscraper and the higher environment of some fire-protection ratings
In, it is widely used, with the reinforcement of people's awareness of safety, the dosage of middle pressure fireproof cable is also more and more.
In practical applications, when being powered using midium voltage cable, since the length of power supply line is longer, therefore, it is necessary to
The middle pressure fireproof cable shorter to length is attached.
Summary of the invention
It is an object of the present invention in view of the deficiency of the prior art, provide pressure fireproof cable connection side in one kind
Method and middle pressure fireproof cable are attached so as to the middle pressure fireproof cable shorter to length.
To achieve the above object, technical solution used in the embodiment of the present invention is as follows:
In a first aspect, the embodiment of the invention provides press fireproof cable connection method in one kind, which comprises
The protective layer of the first cable and the second cable that are connected to is removed respectively, so that first cable exposing is a plurality of
Conducting wire, second cable expose a plurality of conducting wire；
One conducting wire of every conducting wire of first cable and second cable is subjected to dislocation welding, is obtained described
The transition joint portion of first cable and second cable；
Shielding and insulation processing are carried out to each conducting wire in the transition joint portion, obtain multiple sub-line cables；
It is coated after being filled to the gap of adjacent sub-line cable in multiple sub-line cables, obtains the transition joint
The core in portion；
The gap for the protective layer that the transition joint portion separates is welded, the cable after being connected.
Further, a conducting wire of the every conducting wire by first cable and second cable misplaces
Welding, obtains the transition joint portion of first cable and second cable, comprising:
By way of successively misplacing, to a conducting wire of every conducting wire of first cable and second cable into
Row silver pricker welding, obtains the transition joint portion of first cable and second cable.
Further, described that shielding and insulation processing are carried out to each conducting wire in the transition joint portion, obtain multiple sub-lines
Cable, comprising:
Using semi-conductive tape, each conducting wire in the transition joint portion is carried out wrapped respectively, obtains the transition joint portion
The semiconductive conductor shield of middle conducting wire；
According to preset temperature, the conducting wire of the semiconductive conductor shield is placed in the mold with Insulation Material and is handled in advance
If removing the mold after the time, multiple sub-line cables are obtained, successively have described half outside the conducting wire of each sub-line cable
Conductive wire shielded layer and insulating layer.
Further, after the dismounting mold, the method also includes:
Semiconductive varnish is sprayed on the surface of the insulating layer；
It is wrapped to the insulating layer progress for being coated with the semiconductive varnish using semi-conductive tape, to form half in the insulating layer
Conductive insulation screen；
It is wrapped to semi-conductive insulation shield layer progress using the metal tape of pre-set dimension, partly to be led described
Metal screen layer is formed outside electrical isolation shielded layer；Successively there is the semi-conductive insulation screen outside insulating layer described in the sub-line cable
Cover layer and the metal screen layer.
Further, the gap to adjacent sub-line cable in multiple sub-line cables coats after being filled, and obtains
To the core in the transition joint portion, comprising:
It is adopted after being filled to the gap of adjacent sub-line cable in multiple sub-line cables according to glass fibre gasket for packing
Carried out with glass fiber tape it is wrapped, formed the first fire resisting wrapping layer, obtain the core in the transition joint portion；The core packet
Include: the gap of the multiple sub-line cables coated by the first fire resisting wrapping layer, adjacent sub-line cable has filler.
Further, the protective layer separated includes: oxygen barrier layer；The institute that the transition joint portion is separated
The gap for stating protective layer is welded, the cable after being connected, comprising:
The oxygen barrier layer of removing is closely buckled in the surface of the first fire resisting wrapping layer, and to the gap of the oxygen barrier layer
It is welded；
Preset duration is heated to the welding position of the oxygen barrier layer.
Further, the protective layer separated further include: flame retardant coating；The method also includes:
The flame retardant coating of removing is closely buckled in the surface of the oxygen barrier layer, and the gap of the flame retardant coating is welded
It connects；
Preset duration is heated to the welding position of the flame retardant coating；
By glass fiber tape around the fire resisting layer surface is wrapped in, it is wrapped to form the second fire resisting.
Further, the protective layer separated further include: protective case；The method also includes:
The protective case of removing is closely buckled in the wrapped outside of second fire resisting, and to the gap of the protective case into
Row welding；
Preset duration is heated to the welding position of the protective case, the cable after obtaining the connection.
It is further, described that the protective case of removing is closely buckled in the wrapped outside of second fire resisting, comprising:
The steel band is closely buckled in the surface coated steel band that second fire resisting is wrapped, and by the protective case of removing
Surface.
Second aspect, the embodiment of the invention also provides fireproof cable, sequentially connected a plurality of cable are pressed in one kind；It is described
The jointing of adjacent cable is using the connection of method described in above-mentioned first aspect in a plurality of cable.
The beneficial effects of the present invention are: the embodiment of the present invention, which provides, presses fireproof cable connection method and the fire prevention of middle pressure in one kind
Cable removes the protective layer of the first cable and the second cable that are connected to respectively, so that the first cable exposes a plurality of conducting wire, the
Two cables expose a plurality of conducting wire；One conducting wire of every conducting wire of the first cable and the second cable is subjected to dislocation welding, is obtained
The transition joint portion of first cable and the second cable；Shielding and insulation processing are carried out to each conducting wire in intermediate connector portions, obtained more
A sub- cable；It is coated after being filled to the gap of adjacent sub-line cable in multiple sub-line cables, obtains the line in transition joint portion
Core；The gap for the protective layer that intermediate connector portions separate is welded, the cable after being connected.By being carried out to each conducting wire
Shielding and insulation processing, obtain multiple sub- cables, by being coated after the gap filling to adjacent sub-line cable, obtain in indirectly
The core on head, welds the gap of the protective layer separated, the cable after being connected, and fireproof cable is pressed in realization
Connection, and can effectively ensure that the fire protecting performance at cable connection.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention；
Fig. 2 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram that fireproof cable cross section is pressed in one kind provided in an embodiment of the present invention；
Fig. 4 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention；
Fig. 5 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention；
Fig. 6 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention；
Fig. 7 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of the cable after a kind of connection provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
In embodiments of the present invention, the mechanical equipment that can be responded by terminal control executes the embodiment of the present invention and provides
Middle pressure fireproof cable connection method the step of, in the case where construction environment limitation, can be manipulated corresponding by operator
Equipment such as manipulator carries out operation completion, middle pressure fireproof cable connection method provided in an embodiment of the present invention by robot
The step of.
Fig. 1 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention；Such as Fig. 1 institute
Show, this method can include:
S101, the protective layer for removing the first cable and the second cable to be connected respectively, so that the exposing of the first cable is a plurality of
Conducting wire, the second cable expose a plurality of conducting wire.
Wherein, the length for a plurality of conducting wire that the first cable exposes, the length of a plurality of conducting wire exposed with the second cable can be with
It is identical.
In embodiments of the present invention, for the first cable and the second cable to be connected, can be distinguished according to preset length
Remove the protective layer of the first cable and the second cable.In addition, when preset length is 50 centimetres, a plurality of the leading of the first cable exposing
The length of line is 50 centimetres, and the length for a plurality of conducting wire that the second cable exposes also is 50 centimetres.
Certainly, preset length can be determined based on experience value, can also be determined according to actual needs, the present invention
Embodiment is to this without concrete restriction.
S102, a conducting wire of every conducting wire of the first cable and the second cable is subjected to dislocation welding, obtains the first electricity
The transition joint portion of cable and the second cable.
Wherein, transition joint portion may include that every conducting wire of the first cable is welded with a conducting wire of the second cable
Position, the first cable exposes a plurality of conducting wire and the second cable exposes a plurality of conducting wire.
It, can be right using the lesser solder of resistance value by the welding technique of argon arc welding in a kind of possible embodiment
One conducting wire of the every conducting wire and the second cable of stating the first cable carries out dislocation welding, obtains transition joint portion.
It should be noted that the material of conducting wire can be the second class soft copper conductor, it can also be that other can leading with material
Line, the embodiment of the present invention is to this without concrete restriction.
S103, shielding and insulation processing are carried out to each conducting wire in intermediate connector portions, obtains multiple sub-line cables.
Wherein, for a conducting wire carry out shielding and insulation processing after, available strip cable, the quantity of conducting wire with
The quantity of sub-line cable is identical.
In a kind of possible embodiment, for each conducting wire in transition joint portion, can successively it restore outside conducting wire
Semiconductive conductor shield, insulating layer, semi-conductive insulation shield layer and metal screen layer, to realize for transition joint portion
Shielding and insulation processing.
S104, to being coated after the gap filling of adjacent sub-line cable in multiple sub-line cables, obtain the line in transition joint portion
Core.
It wherein, can be by being wrapped in the protective layer removed in S101 for filling the material in the gap of adjacent sub-line cable
The packing material included, can also attach most importance to newly-installed packing material, and the embodiment of the present invention is to this without concrete restriction.
In a kind of possible embodiment, packing material can be glass fibre gasket for packing, fill material by fire resisting
Material is filled the gap between adjacent sub-line cable, and the shape of filled sub-line cable can be cylindric, filled son
The outer diameter of cable is less than or equal to the outer diameter that multiple cables are formed, then is coated using fire-resistant wrapping tape to filled sub-line cable,
The first fire resisting wrapping layer is formed, the core in transition joint portion is obtained.
S105, the gap for the protective layer that intermediate connector portions separate is welded, the cable after being connected.
In embodiments of the present invention, in the outside of core, successively the protective layer of removing can be restored, i.e., it is right with this
The gap of the protective layer separated is welded, can successively restore outside core oxygen barrier layer, flame retardant coating, the second fire resisting it is wrapped,
Steel band and protective case.
It should be noted that oxygen barrier layer, flame retardant coating and protective case can be welded by the way of welding, the second fire resisting
Wrapped and steel band can be restored by the way of cladding, for example, the second fire resisting is wrapped can be coated on flame retardant coating surface, steel
Band can be coated on the surface of the second fire resisting wrapping layer.
In conclusion the embodiment of the present invention provides pressure fireproof cable connection method in one kind, removing is connected to respectively
The protective layer of first cable and the second cable, so that the first cable exposes a plurality of conducting wire, the second cable exposes a plurality of conducting wire；By
Every conducting wire of one cable and a conducting wire of the second cable carry out dislocation welding, obtain the centre of the first cable and the second cable
Connector portions；Shielding and insulation processing are carried out to each conducting wire in intermediate connector portions, obtain multiple sub-line cables；To phase in multiple sub-line cables
The gap of adjacent sub-line cable is coated after being filled, and obtains the core in transition joint portion；Intermediate connector portions are separated anti-
The gap of sheath is welded, the cable after being connected.By carrying out shielding and insulation processing to each conducting wire, multiple sons are obtained
Cable obtains the core in transition joint portion, the protection to separating by coating after the gap filling to adjacent sub-line cable
The gap of layer is welded, the cable after being connected, and realizes the connection for middle pressure fireproof cable, and can effectively ensure that electricity
The fire protecting performance of cable junction.
Optionally, in above-mentioned S102, a conducting wire of every conducting wire of the first cable and the second cable is subjected to dislocation weldering
It connects, obtains the transition joint portion of the first cable and the second cable, may include:
By way of successively misplacing, it is molten that a conducting wire of every conducting wire and the second cable to the first cable carries out silver-colored pricker
It connects, obtains the transition joint portion of the first cable and the second cable.
Wherein, if conducting wire is aluminium core stranded conductor, argon arc welding can be used.
In a kind of possible embodiment, the stain and burr of every conductor of cleaning for bonding, to the every of the first cable
One conducting wire centering of bar conducting wire and second cable and successively dislocation are unfolded, using silver-colored pricker welding progress welding, when welding,
It is ensured that conducting wire without loose and burr, after the completion of welding, cleans conductive line surfaces using cable cleaning paper, measures leading for weld
Line outer diameter, it is ensured that the wire diameter of weld and the outer diameter of lead body are identical.
It should be noted that carrying out welding using silver-colored pricker, it can be ensured that the conductor resistance of weld is not more than lead body
Resistance value, by the way of successively misplacing, it can be ensured that the pull-off force of weld be not less than ontology pull-off force 9 percent
Ten.
In embodiments of the present invention, it is welded by the way of successively misplacing, in the cable after connection can be increased indirectly
The pull-off force on head improves the tensile strength of connector portions so that the cable after connection is not easy to be pulled off.
Fig. 2 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention, such as Fig. 2 institute
Show, in above-mentioned S103, shielding and insulation processing is carried out to each conducting wire in intermediate connector portions, multiple sub-line cables is obtained, may include:
S201, using semi-conductive tape, each conducting wire in intermediate connector portions is carried out wrapped respectively, obtains leading in transition joint portion
The semiconductive conductor shield of line.
Wherein, semi-conductive tape can be the import Cross-linkable semi-conductive tape with cable ad eundem.
In some embodiments, clean conductive line surfaces, with 50 percent stretch, 50 percent Duplication can
Cross-linking type semi-conductive tape, carries out each conducting wire wrapped respectively, obtains the semiconductive conductor shield of conducting wire in transition joint portion, around
After the completion of packet, semiconductive conductor shielding layer surface is cleaned with cable cleaning paper.
In addition, after forming semiconductive conductor shield, it can be using metal mold to semiconductive conductor shield
Conducting wire pressed, semiconductive conductor shield close structure can be made, surface layer rounding is smooth, also can reduce semiconductive
Gap between conductor shield and conducting wire.
S202, according to preset temperature, the conducting wire of semiconductive conductor shield is placed in the mold with Insulation Material and is handled
Mold is removed after preset time, obtains multiple sub-line cables.
Wherein, successively there is semiconductive conductor shield and insulating layer, wherein Insulation Material can outside the conducting wire of each sub-line cable
Think that cross-linked polyethylene insulating material, mold can be crosslinking mold.
In a kind of possible embodiment, software for calculation is intelligently crosslinked by NCC, simulation calculates the friendship in crosslinking mold
Join temperature and time, in crosslinking mold, according to preset temperature and time, is crosslinked conducting wire and the friendship of semiconductive conductor shield
Join insulating material of polyethylene and is cooled to room to mold so that cross-linked polyethylene insulating material is combined closely with semiconductive conductor shield
Mold is removed after temperature, obtains multiple sub-line cables with insulating layer.
It should be noted that carry out sanding and polishing to the insulating layers of multiple sub-line cables, avoid surface of insulating layer protrusion and/
Or the defects of recess.After to insulating layer sanding and polishing, surface of insulating layer can be cleaned with cable cleaning paper, in addition, joint
Insulation thickness is not more than the 10 of cable body insulation thickness.
Fig. 3 is the structural schematic diagram that fireproof cable cross section is pressed in one kind provided in an embodiment of the present invention, as shown in figure 3,
Middle pressure fireproof cable includes: conducting wire 10, semiconductive conductor shield 11, insulating layer 12, is successively led with semiconductive outside conducting wire 10
Line shielded layer 11 and insulating layer 12.
Fig. 4 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention, such as Fig. 4 institute
Show, in above-mentioned S202, after removing mold, this method can also include:
S301, semiconductive varnish is sprayed on the surface of insulating layer.
Wherein it is possible to surface of insulating layer be cleaned using absolute alcohol, to remove the dust of surface of insulating layer, then in insulating layer
Surface even application semiconductive varnish, after the completion of spraying, natural air drying.
S302, using semi-conductive tape to be coated with semiconductive varnish insulating layer carry out it is wrapped, with insulating layer formation partly lead
Be electrically insulated shielded layer.
It should be noted that can be using the special more wrapped insulating layers for being coated with semiconductive varnish of tengential belt of semiconductive, and press
It is smooth, to reduce the presence of impurity and the air gap, so that the cable electrical performance of connector portions is more nearly the electricity of cable body
Gas performance.
S303, the metal tape using pre-set dimension, it is wrapped to the progress of semiconductive insulation screen, in semi-conductive insulation screen
It covers and forms metal screen layer outside layer.
Wherein, successively there is outside insulating layer semi-conductive insulation shield layer and metal screen layer in sub-line cable.
In embodiments of the present invention, can be using with the metal layer of cable body, the copper strips of same thickness and width is right
The progress of semi-conductive insulation shield layer is wrapped, can be welded using soldering in wrapped joint, thus in semi-conductive insulation
Metal screen layer is formed outside shielded layer.
As shown in figure 3, the sub-line cable of middle pressure fireproof cable includes: conducting wire 10, semiconductive conductor shield 11, insulating layer
12, semi-conductive insulation shield layer 13 and metal screen layer 14, conducting wire 10 successively have semiconductive conductor shield 11, insulating layer outside
12, semi-conductive insulation shield layer 13 and metal screen layer 14.
In embodiments of the present invention, pass through conductive wire shielded layer, the insulating layer, semi-conductive insulation shield layer outside to conducting wire
Restored with metal screen layer, cable connecting part can be improved, the reliability when transmitting signal.
It optionally, may include: according to glass fibre gasket for packing, to adjacent sub-line in multiple sub-line cables in above-mentioned S104
It is wrapped using glass fiber tape progress after the gap of cable is filled, the first fire resisting wrapping layer is formed, transition joint portion is obtained
Core.
Wherein, glass fiber tape can be alkali-free glass fibre band, and core includes: by the more of the first fire resisting wrapping layer cladding
The gap of a sub- cable, adjacent sub-line cable has filler.
It should be noted that being filled out using glass fibre gasket for packing to the gap of adjacent sub-line cable in multiple sub-line cables
When filling, it shall be guaranteed that filling is closely knit, guarantees filled sub-line cable rounding, to enhance the fire resistance of subsequent technique.
As shown in figure 3, in Fig. 3 further include: glass fibre gasket for packing 15, the first fire resisting wrapping layer 16, glass fibre filling
Rope 15 is for filling the gap of sub-line cable, the wrapped filled sub-line cable of the first fire resisting wrapping layer 16.
Fig. 5 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention, such as Fig. 5 institute
Show, optionally, the protective layer separated includes: oxygen barrier layer, in above-mentioned S105, to the seam for the protective layer that intermediate connector portions separate
Gap is welded, and the cable after being connected may include:
S401, the surface that the oxygen barrier layer of removing is closely buckled in the first fire resisting wrapping layer, and the gap of oxygen barrier layer is welded
It connects.
Wherein, oxygen barrier layer material can be not less than 47 low smoke and zero halogen oxygen barrier layer protective cover material for oxygen index (OI).
In a kind of possible embodiment, the oxygen barrier layer of removing is closely buckled in the surface of the first fire resisting wrapping layer, is used
It is welded with the material of oxygen barrier layer same material, oxygen barrier layer material easily decomposes at high temperature, can be by heating apparatus temperature tune
Whole to 300 to 400 degrees Celsius, the oxygen barrier layer surface welded needed for every place, heating time can control 3 to 10 seconds it
Between, to prevent the pyrolytic of oxygen barrier layer material.
In addition, after the completion of welding smooth processing can be carried out to oxygen barrier layer surface.
S402, preset duration is heated to the welding position of oxygen barrier layer.
In some embodiments, can one layer of high temperature resistant band wrapped to oxygen barrier layer surface, on high temperature resistant band surface
One layer of copper strips is wound, using liquefied gas flame baking copper strip surface, so that oxygen barrier layer weld thermally equivalent, to eliminate stress,
To guarantee that joint does not generate cracking.
Fig. 6 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention, such as Fig. 6 institute
Show, optionally, the protective layer separated includes: flame retardant coating, method further include:
S501, the surface that the flame retardant coating of removing is closely buckled in oxygen barrier layer, and the gap of flame retardant coating is welded.
Wherein, the material of flame retardant coating can be ceramic fire-resistant polyolefin jacket material.
In a kind of possible embodiment, the flame retardant coating of removing is closely buckled in the surface of oxygen barrier layer, use and flame retardant coating
The material of same material is welded, ceramic fire resisting layer material fusion weld at high temperature, can be by heating apparatus temperature tune
Whole to 300 to 400 degrees Celsius, the fire resisting layer surface welded needed for every place, heating time can control 3 to 10 seconds it
Between, to prevent the pyrolytic of the oxygen barrier layer material of ceramic.
In addition, after the completion of welding smooth processing can be carried out to fire resisting layer surface.
S502, preset duration is heated to the welding position of flame retardant coating；
In some embodiments, can one layer of high temperature resistant band wrapped to fire resisting layer surface, on high temperature resistant band surface
One layer of copper strips is wound, using liquefied gas flame baking copper strip surface, so that flame retardant coating weld thermally equivalent, to eliminate stress,
To guarantee that weld does not generate cracking.
S503, by glass fiber tape around flame retardant coating surface is wrapped in, it is wrapped to form the second fire resisting.
It should be noted that can be overlapped wrapped layer of glass twining package tape in ceramic fire resisting layer surface, band is connect
It is fixed at head using glass fibre self-adhesive tape, it is wrapped to form the second fire resisting.
Fig. 7 is the flow diagram that fireproof cable connection method is pressed in one kind provided in an embodiment of the present invention, such as Fig. 7 institute
Show, optionally, the protective layer separated further include: protective case, method further include:
S601, the protective case of removing is closely buckled in the wrapped outside of the second fire resisting, and the gap of protective case is welded；
Wherein, protective case can be low smoke and zero halogen oversheath.
In a kind of possible embodiment, the protective case of removing is closely buckled in the surface of oxygen barrier layer, use and flame retardant coating
The material of same material is welded, and heating apparatus temperature can be adjusted to 400 to 500 degrees Celsius, every place is needed to weld
The protective case surface connect, heating time can control between 3 to 10 seconds, and to prevent the pyrolytic of protective case, welding is completed
Protective case outer diameter is measured afterwards, it is identical as default outer diameter to be confirmed whether.
In addition, after the completion of welding smooth processing can be carried out to protective case surface.
S602, preset duration is heated to the welding position of protective case, the cable after being connected.
In some embodiments, can one layer of high temperature resistant band wrapped to protective case surface, on high temperature resistant band surface
One layer of copper strips is wound, using liquefied gas flame baking copper strip surface, so that protective case weld thermally equivalent, to eliminate stress,
To guarantee that weld does not generate cracking.
In embodiments of the present invention, by oxygen barrier layer, flame retardant coating, the second fire resisting be wrapped and protective case, restored, mentioned
The high fire protecting performance in the transition joint portion of cable, so that the cable after connection is nonflammable, safety is higher.
The cable as shown in figure 3, middle pressure provided in an embodiment of the present invention is prevented fires, further includes: oxygen barrier layer 17, flame retardant coating 18, the
Two fire resistings wrapped 19 and protective case 20, successively have outside the first fire resisting wrapping layer 16 oxygen barrier layer 17, flame retardant coating 18, the second fire resisting around
Packet 19 and protective case 20.
Optionally, the surface coated steel band wrapped in second fire resisting, and the protective case of removing is closely buckled in institute
State the surface of steel band.
In embodiments of the present invention, 50 percent side can be not more than with wrapped clearance rate using the steel band of removing
Formula, the surface wrapped to the second fire resisting coat, and connector can be cut to round mouth and be welded, and after the completion of welding, need butt welding
It polishes at the place of connecing.
In the surface coated steel band that the second fire resisting is wrapped, the intensity in the transition joint portion of cable can be improved, so that connection
Cable afterwards is not easy to be damaged.
Middle pressure fireproof cable connection method provided in an embodiment of the present invention, so that the cable after connection, has Halogen, low
The characteristics such as cigarette, fire-retardant and fire prevention, so that the transition joint portion after connection, highest allows operating temperature to be 90 DEG C, and short-circuit highest permits
Perhaps temperature is 250 DEG C.
In addition, the transition joint portion of the middle pressure fireproof cable after connection, by wire and cable Quality Supervision and Inspection Center technology
The Appendix B of specification, TICW 8-2012 is sampled and is tested, and is being 180 minutes for the fiery time, flame temperature is 950 to 1000
Under conditions of degree Celsius, during entire test, for the cable after connection, apply voltage rating U0, it is ensured that do not puncture,
In off-test one hour, then voltage 3.5U is applied to the cable after connection0, the cable after connection can continue not hit for 15 minutes
It wears.
In embodiments of the present invention, waterproof experiment has been carried out to the transition joint portion of the middle pressure fireproof cable after connection, it will
The transition joint portion of middle pressure fireproof cable after connection, is soaked in water 72 hours, successively remove transition joint portion protective case,
Second fire resisting is wrapped, flame retardant coating, oxygen barrier layer, the first fire resisting wrapping layer, glass fibre gasket for packing, metal screen layer and semiconductive are exhausted
Edge shielded layer, obtained surface of insulating layer after observation removing, surface of insulating layer is still dry, it can be seen that, using this hair
The middle pressure fireproof cable that the method that bright embodiment provides is connected has good waterproof performance.
Fig. 8 is the structural schematic diagram of the cable after a kind of connection provided in an embodiment of the present invention, as shown in figure 8, of the invention
Embodiment also provides and presses fireproof cable in one kind, comprising: sequentially connected a plurality of cable；The connection of adjacent cable in a plurality of cable
Connector uses above-mentioned Fig. 1 to Fig. 2, any method connection of Fig. 4 to Fig. 7.
As shown in figure 8, may include the first cable 21, the second cable 22 and jointing 23, the first cable 21 and second
Cable 22 uses above-mentioned Fig. 1 to Fig. 2, any method connection of Fig. 4 to Fig. 7.
In several embodiments provided by the present invention, it should be understood that disclosed method, it can be by others side
Formula is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only one
Kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
It is desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or discussed it is mutual it
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of device or unit
It connects, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) or processor (English: processor) execute this hair
The part steps of bright each embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory
(English: Read-Only Memory, abbreviation: ROM), random access memory (English: Random Access Memory, letter
Claim: RAM), the various media that can store program code such as magnetic or disk.
Claims (10)
1. pressing fireproof cable connection method in one kind, which is characterized in that the described method includes:
The protective layer of the first cable and the second cable to be connected is removed respectively, so that first cable exposes a plurality of conducting wire,
Second cable exposes a plurality of conducting wire；
One conducting wire of every conducting wire of first cable and second cable is subjected to dislocation welding, obtains described first
The transition joint portion of cable and second cable；
Shielding and insulation processing are carried out to each conducting wire in the transition joint portion, obtain multiple sub-line cables；
To coating after the gap filling of adjacent sub-line cable in multiple sub-line cables, the line in the transition joint portion is obtained
Core；
The gap for the protective layer that the transition joint portion separates is welded, the cable after being connected.
2. the method as described in claim 1, which is characterized in that the every conducting wire by first cable and described second
One conducting wire of cable carries out dislocation welding, obtains the transition joint portion of first cable and second cable, comprising:
By way of successively misplacing, a conducting wire of every conducting wire and second cable to first cable carries out silver
Pricker welding obtains the transition joint portion of first cable and second cable.
3. the method as described in claim 1, which is characterized in that it is described to each conducting wire in the transition joint portion carry out shielding and
Insulation processing obtains multiple sub-line cables, comprising:
Using semi-conductive tape, each conducting wire in the transition joint portion is carried out wrapped respectively, obtains leading in the transition joint portion
The semiconductive conductor shield of line；
According to preset temperature, the conducting wire of the semiconductive conductor shield is placed in when handling default in the mold with Insulation Material
Between after remove the mold, obtain multiple sub-line cables, successively there is the semiconductive outside the conducting wire of each sub-line cable
Conductor shield and insulating layer.
4. method as claimed in claim 3, which is characterized in that after the dismounting mold, the method also includes:
Semiconductive varnish is sprayed on the surface of the insulating layer；
It is wrapped to the insulating layer progress for being coated with the semiconductive varnish using semi-conductive tape, to form semiconductive in the insulating layer
Insulation screen；
It is wrapped to semi-conductive insulation shield layer progress using the metal tape of pre-set dimension, in the semi-conductive insulation screen
It covers and forms metal screen layer outside layer；Successively there is the semi-conductive insulation shield layer and institute outside insulating layer described in the sub-line cable
State metal screen layer.
5. the method as described in claim 1, which is characterized in that the gap to adjacent sub-line cable in multiple sub-line cables
It is coated after being filled, obtains the core in the transition joint portion, comprising:
According to glass fibre gasket for packing, after being filled to the gap of adjacent sub-line cable in multiple sub-line cables, using glass
The progress of glass fiber band is wrapped, forms the first fire resisting wrapping layer, obtains the core in the transition joint portion；The core include: by
Multiple sub-line cables of the first fire resisting wrapping layer cladding, the gap of adjacent sub-line cable have filler.
6. method as claimed in claim 5, which is characterized in that the protective layer separated includes: oxygen barrier layer；It is described to institute
The gap for stating the protective layer that transition joint portion separates is welded, the cable after being connected, comprising:
The oxygen barrier layer of removing is closely buckled in the surface of the first fire resisting wrapping layer, and the gap of the oxygen barrier layer is carried out
Welding；
Preset duration is heated to the welding position of the oxygen barrier layer.
7. method as claimed in claim 6, which is characterized in that the protective layer separated further include: flame retardant coating；The side
Method further include:
The flame retardant coating of removing is closely buckled in the surface of the oxygen barrier layer, and the gap of the flame retardant coating is welded；
Preset duration is heated to the welding position of the flame retardant coating；
By glass fiber tape around the fire resisting layer surface is wrapped in, it is wrapped to form the second fire resisting.
8. the method for claim 7, which is characterized in that the protective layer separated further include: protective case；The side
Method further include:
The protective case of removing is closely buckled in the wrapped outside of second fire resisting, and the gap of the protective case is welded
It connects；
Preset duration is heated to the welding position of the protective case, the cable after obtaining the connection.
9. method according to claim 8, which is characterized in that described that the protective case of removing is closely buckled in described second is resistance to
The wrapped outside of fire, comprising:
In the surface coated steel band that second fire resisting is wrapped, and the protective case of removing is closely buckled in the table of the steel band
Face.
10. pressing fireproof cable in one kind characterized by comprising sequentially connected a plurality of cable；It is adjacent in a plurality of cable
The jointing of cable connects to obtain using the described in any item methods of the claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910738628.4A CN110364902B (en) | 2019-08-12 | 2019-08-12 | Medium-voltage fireproof cable connection method and medium-voltage fireproof cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910738628.4A CN110364902B (en) | 2019-08-12 | 2019-08-12 | Medium-voltage fireproof cable connection method and medium-voltage fireproof cable |
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| CN110364902A true CN110364902A (en) | 2019-10-22 |
| CN110364902B CN110364902B (en) | 2021-05-11 |
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Cited By (1)
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| CN113229529A (en) * | 2021-04-16 | 2021-08-10 | 陈锡才 | Winding gathering type tobacco sheet filter stick processing device |
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