CN112017823B - Low-smoke halogen-free BI-level fire-resistant power cable - Google Patents
Low-smoke halogen-free BI-level fire-resistant power cable Download PDFInfo
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- CN112017823B CN112017823B CN202010914993.9A CN202010914993A CN112017823B CN 112017823 B CN112017823 B CN 112017823B CN 202010914993 A CN202010914993 A CN 202010914993A CN 112017823 B CN112017823 B CN 112017823B
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- 239000000779 smoke Substances 0.000 title claims abstract description 38
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 34
- 239000003063 flame retardant Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 48
- 239000004020 conductor Substances 0.000 claims abstract description 21
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 21
- 150000002367 halogens Chemical class 0.000 claims abstract description 21
- 229920000098 polyolefin Polymers 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 238000011049 filling Methods 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 239000011810 insulating material Substances 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 40
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 37
- 238000001035 drying Methods 0.000 claims description 37
- 230000007246 mechanism Effects 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 230000010405 clearance mechanism Effects 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- 239000004088 foaming agent Substances 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 239000012760 heat stabilizer Substances 0.000 claims description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000000945 filler Substances 0.000 abstract description 3
- 239000005995 Aluminium silicate Substances 0.000 abstract 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 abstract 1
- 229910000323 aluminium silicate Inorganic materials 0.000 abstract 1
- 235000012211 aluminium silicate Nutrition 0.000 abstract 1
- 230000009471 action Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- -1 protective sheath Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- 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
- H01B7/29—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
- H01B7/40—Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing
-
- 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
- H01B9/023—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of helicoidally wound tape-conductors
-
- 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
- H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
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- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses a low-smoke halogen-free BI-level fire-resistant power cable. This fire-resistant power cable of low smoke and zero halogen BI level, outside through at cable conductor sets up the protective sheath, fire-retardant layer, the inner liner, the shielding layer, no halogen layer, add reinforcing strip and fire-retardant filling rope, and the protective sheath all adopts halogen-free low smoke polyolefin material to make with no halogen layer, fire-retardant layer adopts aluminium silicate fiber to weave the material, the inner liner adopts the insulating material filler, the shielding layer is woven the stratum reticulare by metal film winding layer and wire and is constituteed, fire-retardant filling rope adopts low smoke and zero halogen fire-retardant material, make the cable body have high fire resistance and fire resistance, and the insulating nature and the signal shielding performance of cable body also promote in step, the setting that utilizes the reinforcing strip can further improve the stretch-proofing performance of cable body, effectively prolong power cable's life.
Description
Technical Field
The invention relates to the technical field of fire-resistant cables, in particular to a low-smoke halogen-free BI-level fire-resistant power cable.
Background
Power cables are primarily cables used for transmitting and distributing electrical energy. The cable is commonly used for leading-out lines of urban underground power grids and power stations, the proportion of the cable in the power line is gradually increased, so that power cables with various performance types are produced by transportation, and particularly, the fireproof power cable is used as a leading-out line, has good fireproof performance and also has strong mechanical performance.
Although the existing halogen-free fire-resistant power cable has better fire-resistant and fire-resistant characteristics, no halogen acid gas is discharged when the cable is burnt, the smoke amount of the cable is small, but the power cable has poor mechanical properties, is easy to deform and break, and has a short service life.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a low-smoke halogen-free BI-level fire-resistant power cable, which solves the problems that the existing halogen-free fire-resistant power cable is poor in mechanical property, easy to deform, easy to break and low in service life, and in the cable production process, when the cable is cooled by a water cooling tank, some water stains are left on the surface of the cable, so that dust is easy to adhere to the surface of the cable when the subsequent cable is wound up, and the surface quality of the cable is influenced.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a fire-resistant power cable of low smoke and zero halogen BI level, includes the cable body, the cable body includes cable conductor, protective sheath, fire-retardant layer, inner liner, shielding layer, no halogen layer, consolidates strip and fire-retardant filling rope, the inside that cable conductor is located no halogen layer is provided with a plurality of, consolidate the strip and set up between adjacent cable conductor, fire-retardant filling rope sets up between the inside of no halogen layer and cable conductor's surface, and does not have the inside of halogen layer setting at the shielding layer, the shielding layer sets up the inside at inner liner, and the inner liner sets up the inside on fire-retardant layer, fire-retardant layer sets up the inside at the protective sheath.
Preferably, the protective sleeve and the halogen-free layer are both made of halogen-free low-smoke polyolefin material, and the preparation method of the polyolefin material comprises the following steps:
s21, taking 120 parts of polyolefin 100, 20-30 parts of nano silicon dioxide, 6-8 parts of dispersing agent, 2-5 parts of foaming agent and 2-5 parts of heat stabilizer;
s22, adding the taken materials into an internal mixer at the same time, starting a roller, heating to 200 ℃ at the rotating speed of 30-40r/min, and then preserving heat for 30-60min to uniformly disperse the mixed materials in a molten state;
s23, introducing the product obtained in the internal mixer into a high-speed stirrer for stirring treatment, raising the temperature to 240 ℃ at the rotating speed of 8000-;
and S24, feeding the product after stirring treatment into a double-screw extruder for extrusion granulation to obtain the polyolefin material.
Preferably, the flame-retardant layer is made of aluminum silicate fiber woven materials, the thickness of the flame-retardant layer is 6-8 mm, the inner liner layer is made of insulating material fillers, the shielding layer is composed of a metal film winding layer and a metal wire woven net layer, the thickness of the shielding layer is 2-3 mm, and the flame-retardant filling rope is made of low-smoke halogen-free flame-retardant materials.
Preferably, the preparation method of the fire-resistant power cable comprises the following steps:
step one, preparing raw materials: preparing a power cable raw material cable conductor, a protective sleeve, a flame-retardant layer, an inner liner layer, a shielding layer, a halogen-free layer, a reinforcing strip and a flame-retardant filling rope;
step two, cable assembly: wrapping a halogen-free layer on the surfaces of the cable conductor, the reinforcing strip and the reinforcing strip, wrapping a shielding layer on the surface of the halogen-free layer, wrapping the inner liner layer on the surface of the shielding layer in an extrusion wrapping mode, wrapping the flame-retardant layer on the surface of the inner liner layer, and finally extruding and wrapping the protective sleeve on the surface of the flame-retardant layer through an extruder to obtain a cable body;
step three, cooling detection: the cable body penetrates through the cold water tank, the cable body is cooled and formed through the cold water tank, and then performance detection is carried out on the formed cable body;
step four, processing treatment: one end of a cable body after cooling detection penetrates through a material hole in a side plate to enter an equipment box, an operation controller opens a switch of a traction assembly, a driving shaft of two servo electric cylinders extends out to respectively drive two clamping blocks to move relatively, one end of the cable body is clamped through an arc-shaped groove between the opposite sides of the two clamping blocks, one sides of rubber pads in the two arc-shaped grooves are respectively contacted with two sides of the surface of the cable body to ensure the stability of the cable body between the two clamping blocks, two linear motors respectively perform synchronous displacement on the surfaces of two linear slide rails to pull the cable body to move in the equipment box, an operation controller opens a hot air fan switch to generate hot air through a hot air fan, the hot air enters an air cavity flow passage in a drying rack through an air guide pipe, and finally the hot air is sprayed out through an air outlet pipe in the air cavity flow passage, one end of the cable body enters the drying frame by traction, hot air sprayed by the upper air outlet pipe and the lower air outlet pipe is utilized to quickly dry water stains on the surface of the cable body, the dried cable body continues to move rightwards in the equipment box under the driving of the traction assembly, one end of the cable body passes through the second through hole in the cleaning frame, the operation controller opens the two switches of the servo electric cylinder, the two driving shafts of the servo electric cylinder drive the movable plates to move, the cleaning brush between the two movable plates covers the surface of the cable body, then the traction component sends one end of the cable body out from the material hole in the side plate on the right side, the winding mechanism is utilized to wind the cable, in the process of winding the cable, the surface of the cable is in close contact with the cleaning brush, and dust adhered to the surface of the cable is treated by the cleaning brush;
step five, finishing production: and (4) taking up and packaging the cable passing through the cable processing equipment by using a winding mechanism, and finishing the production of the low-smoke halogen-free BI-level fire-resistant power cable.
Preferably, the processing equipment for the power cable comprises an equipment box and two side plates fixed on two sides of the equipment box;
the inside of equipment box is provided with the subassembly that draws, and the inside of equipment box passes through screw fixedly connected with mounting bracket, the inside left side of mounting bracket is provided with drying mechanism, and the inside right side of mounting bracket is provided with clearance mechanism, two the material hole has all been seted up to the inside of curb plate.
Preferably, the traction assembly comprises two linear slide rails fixed on the front and back surfaces of the inner wall of the mounting frame and two linear motors sliding on the surfaces of the linear slide rails;
two equal fixedly connected with servo electric jar one in the relative one side of linear electric motor, and the equal fixedly connected with clamp splice of one end of two servo electric jar drive shafts, two the arc wall has all been seted up to the relative one side of clamp splice, and the equal fixedly connected with rubber pad of inner wall of two arc walls.
Preferably, the drying mechanism comprises a hot air blower fixed on the left side of the top of the mounting frame and a drying frame fixed on the left side inside the mounting frame;
the air heater is characterized in that one end of the air outlet of the air heater is communicated with an air guide pipe, the bottom end of the air guide pipe penetrates through the mounting frame and extends to the inside of the mounting frame, an air cavity flow channel is formed in the drying frame, one end of the air guide pipe extending to the inside of the mounting frame is communicated with the inside of the air cavity flow channel, a first through hole is formed in the drying frame, an air outlet pipe is fixedly connected to the top and the bottom of the inner wall of the first through hole, and the inside of the air outlet pipe is communicated with the inside of the air cavity flow channel.
Preferably, the cleaning mechanism comprises a connecting frame fixed on the right side of the top of the mounting frame and a cleaning frame fixed at the bottom of the connecting frame;
the both sides of link all are provided with the joint subassembly, and two joint subassemblies all with the inside swing joint of mounting bracket, through-hole two has been seted up to the inside of clean frame, and the equal swing joint in the upper and lower side in through-hole two insides has a fly leaf, two the equal fixedly connected with of one side that the fly leaf is relative clears up the brush, the top of two inner walls of through-hole and the equal fixedly connected with servo electric jar two in bottom, and the one side fixed connection that the one end of two drive shafts of two servo electric jars deviates from with two movable plates respectively.
Preferably, the clamping assembly comprises a push block which is positioned in the connecting frame and slides and clamping blocks which are positioned on two sides of the connecting frame and move;
the spout has been seted up to the inside of link, and the inside fixedly connected with slide bar of spout, the inside sliding connection of spout has the slider, and the inside of slider and the surface sliding connection of slide bar, the top and the bottom of slider respectively with the top fixed connection of ejector pad bottom and fixture block, the surface cover of slide bar is equipped with the spring, and the both ends of spring respectively with one side of slider and one side fixed connection of spout inner wall, the draw-in groove with fixture block looks adaptation is seted up to the inside of mounting bracket.
Preferably, the two sides of the bottom of the inner wall of the equipment box are fixedly connected with a first limiting frame and a second limiting frame respectively, and the tops of the first limiting frame and the second limiting frame are connected with the bottoms of the drying frame and the cleaning frame in a clamped mode respectively.
(III) advantageous effects
The invention provides a low-smoke halogen-free BI-level fire-resistant power cable. Compared with the prior art, the method has the following beneficial effects:
(1) the low-smoke halogen-free BI-level fire-resistant power cable is characterized in that a protective sleeve, a flame-retardant layer, an inner liner layer, a shielding layer, a halogen-free layer, a reinforcing strip and a flame-retardant filling rope are arranged outside a cable conductor, the protective sleeve and the halogen-free layer are both made of halogen-free low-smoke polyolefin materials, the flame-retardant layer is made of aluminum silicate fiber woven materials, the thickness of the flame-retardant layer is 6-8 mm, the lining layer is filled with insulating materials, the shielding layer is composed of a metal film winding layer and a metal wire woven net layer, the thickness of the shielding layer is 2-3 mm, the flame-retardant filling rope is made of low-smoke halogen-free flame-retardant materials, so that the cable body has high flame retardance and fire resistance, and the insulating property and the signal shielding performance of the cable body are also synchronously improved, the tensile resistance of the cable body can be further improved by utilizing the reinforcing strips, and the service life of the power cable is effectively prolonged.
(2) The low-smoke halogen-free BI-level fire-resistant power cable is characterized in that one end of an air outlet of an air heater is communicated with an air guide pipe, the bottom end of the air guide pipe penetrates through a mounting frame and extends into the mounting frame, an air cavity flow passage is formed in a drying frame, one end of the air guide pipe extending into the mounting frame is communicated with the air cavity flow passage, a first through hole is formed in the drying frame, the top and the bottom of the inner wall of the first through hole are fixedly connected with air outlet pipes, the interiors of the two air outlet pipes are communicated with the interior of the air cavity flow passage, a cable body is pulled by a traction assembly to move in an equipment box, hot air is generated by the air heater, the hot air enters the air cavity flow passage in the drying frame through the air guide pipe, finally the hot air is sprayed out of the air cavity flow passage, one end of the cable body enters the drying frame through traction, and the hot air sprayed by the upper air outlet pipe and the lower air outlet pipes is used for quickly drying the water stains on the surface of the cable body, the surface of the power cable after production is free from water stain residue, and the production quality of the power cable is greatly improved.
(3) The low-smoke halogen-free BI-level fireproof power cable is characterized in that clamping components are arranged on two sides of a connecting frame, the two clamping components are movably connected with the inside of a mounting frame, a second through hole is formed in a cleaning frame, movable plates are movably connected above and below the inside of the second through hole, a cleaning brush is fixedly connected to one side, opposite to the two movable plates, of the two movable plates, a second servo electric cylinder is fixedly connected to the top and the bottom of the inner wall of the second through hole, one end of a driving shaft of the second servo electric cylinder is fixedly connected with one side, which is opposite to the two movable plates, respectively, a traction component drives the dried power cable to move rightwards in an equipment box, after one end of a cable body passes through the second through hole in the cleaning frame, an operation controller opens a second servo electric cylinder switch, the movable plates are driven to move by the second servo electric cylinder driving shaft, and the cleaning brush between the two movable plates coats the surface of the cable body, the traction assembly sends one end of the cable body out of the material hole in the side plate on the right side, the winding mechanism is used for winding the cable, the surface of the cable is in close contact with the cleaning brush in the winding process, the cleaning brush is used for treating dust adhered to the surface of the cable, the dust on the surface of the power cable is rapidly cleaned, and the surface quality of the power cable after production is greatly improved.
Drawings
FIG. 1 is a schematic view of the structure of a low smoke zero halogen BI-level fire resistant power cable of the present invention;
FIG. 2 is a cross-sectional view of a low smoke zero halogen BI level fire resistant power cable construction of the present invention;
FIG. 3 is a schematic view of the construction of the cable processing apparatus of the present invention;
FIG. 4 is a cross-sectional view of the construction of the cable processing apparatus of the present invention;
FIG. 5 is an enlarged view taken at A of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic view of the structure of the drying mechanism of the present invention;
FIG. 7 is a schematic view of the cleaning mechanism of the present invention;
FIG. 8 is a schematic view of the structure of the clamping assembly of the present invention.
In the figure, 10 cable bodies, 101 cable conductors, 102 protective sleeves, 103 flame-retardant layers, 104 inner liners, 105 shielding layers, 106 halogen-free layers, 107 reinforcing strips, 108 flame-retardant filling ropes, 1 traction assembly, 11 linear sliding rails, 12 linear motors, 13 servo electric cylinder I, 14 clamping blocks, 15 arc-shaped grooves, 16 rubber pads, 2 drying mechanisms, 21 hot air blowers, 22 drying frames, 23 air guide pipes, 24 air cavity flow channels, 25 through hole I, 26 air outlet pipes, 3 cleaning mechanisms, 31 connecting frames, 32 cleaning frames, 33 clamping components, 331 push blocks, 332 clamping blocks, 333 sliding grooves, 334 sliding rods, 335 sliding blocks, 336 springs, 34 through hole II, 35 movable plates, 36 cleaning brushes, 37 servo electric cylinder II, 4 equipment boxes, 5 side plates, 6 mounting frames, 7 material holes, 8 limiting frames I and 9 limiting frames II.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides three technical solutions: a low-smoke halogen-free BI-level fire-resistant power cable specifically comprises the following embodiments:
example 1
A low-smoke halogen-free BI-level fire-resistant power cable comprises a cable body 10, wherein the cable body 10 comprises a cable conductor 101, a protective sleeve 102, a fire-retardant layer 103, an inner liner layer 104, a shielding layer 105, a halogen-free layer 106, reinforcing strips 107 and a fire-retardant filling rope 108, the cable conductor 101 is positioned inside the halogen-free layer 106, the reinforcing strips 107 are arranged between the adjacent cable conductors 101, the fire-retardant filling rope 108 is arranged between the inside of the halogen-free layer 106 and the surface of the cable conductor 101, the halogen-free layer 106 is arranged inside the shielding layer 105, the shielding layer 105 is arranged inside the inner liner layer 104, the inner liner layer 104 is arranged inside the fire-retardant layer 103, the fire-retardant layer 103 is arranged inside the protective sleeve 102, and both the protective sleeve 102 and the halogen-free layer 106 are made of halogen-free low-smoke polyolefin materials;
the preparation method of the polyolefin material comprises the following steps:
s21, taking 100 parts of polyolefin, 20 parts of nano silicon dioxide, 6 parts of dispersing agent, 2 parts of foaming agent and 2 parts of heat stabilizer;
s22, adding the taken materials into an internal mixer at the same time, starting a roller, heating to 200 ℃ at the rotating speed of 30r/min, and then preserving heat for 30min to uniformly disperse the mixed materials in a molten state;
s23, introducing the product obtained in the internal mixer into a high-speed stirrer for stirring treatment, heating to 240 ℃ at the rotating speed of 8000r/min, and stirring for 5 min;
and S24, feeding the product after stirring treatment into a double-screw extruder for extrusion granulation to obtain the polyolefin material.
The flame-retardant layer 103 is made of aluminum silicate fiber woven materials, the thickness of the flame-retardant layer 103 is 6mm-8mm, the lining layer 104 is made of insulating material fillers, the shielding layer 105 is composed of a metal film winding layer and a metal wire woven net layer, the thickness of the shielding layer 105 is 2mm-3mm, and the flame-retardant filling rope 108 is made of low-smoke halogen-free flame-retardant materials.
The preparation method of the fire-resistant power cable comprises the following steps:
step one, preparing raw materials: preparing a power cable raw material cable conductor 101, a protective sleeve 102, a flame-retardant layer 103, an inner liner layer 104, a shielding layer 105, a halogen-free layer 106, a reinforcing strip 107 and a flame-retardant filling rope 108;
step two, cable assembly: wrapping a halogen-free layer 106 on the surfaces of the cable conductor 101, the reinforcing strip 107 and the reinforcing strip 107, wrapping a shielding layer 105 on the surface of the halogen-free layer 106, wrapping an inner liner layer 104 on the surface of the shielding layer 105 in an extrusion wrapping manner, wrapping a flame-retardant layer 103 on the surface of the inner liner layer 104, and finally extruding and wrapping a protective sleeve 102 on the surface of the flame-retardant layer 103 through an extruder to obtain a cable body 10;
step three, cooling detection: the cable body 10 penetrates through a cold water tank, the cable body 10 is cooled and formed through the cold water tank, and then performance detection is carried out on the formed cable body 10;
step four, processing treatment: one end of a cable body 10 after cooling detection penetrates through a material hole 7 in a side plate 5 to enter an equipment box 4, an operation controller opens a switch of a traction assembly 1, a driving shaft of two servo electric cylinders I13 extends out to respectively drive two clamping blocks 14 to move relatively, one end of the cable body 10 is clamped through an arc-shaped groove 15 between opposite sides of the two clamping blocks 14, one sides of rubber pads 16 in the two arc-shaped grooves 15 are respectively contacted with two sides of the surface of the cable body 10 to ensure the stability of the cable body 10 between the two clamping blocks 14, two linear motors 12 respectively perform synchronous displacement on the surfaces of two linear slide rails 11 to pull the cable body 10 to move in the equipment box 4, the operation controller opens a switch of a hot air blower 21 to generate hot air through the hot air blower 21, the hot air enters an air cavity flow channel 24 in a drying rack 22 through an air guide pipe 23, finally, hot air is sprayed out from the air cavity flow passage 24 through the air outlet pipes 26, one end of the cable body 10 enters the drying frame 22 through traction, hot air sprayed out from the upper air outlet pipe 26 and the lower air outlet pipe 26 is used for quickly drying water stains on the surface of the cable body 10, the dried cable body continues to move rightwards in the equipment box 4 under the driving of the traction assembly 1, one end of the cable body 10 penetrates through the second through hole 34 in the cleaning frame 32, the operation controller opens the second servo electric cylinder 37 switch, the second servo electric cylinder 37 driving shaft drives the movable plate 35 to move, the cleaning brush 36 between the two movable plates 35 coats the surface of the cable body 10, then the traction assembly 1 sends one end of the cable body 10 out from the material hole 7 in the side plate 5 on the right side, the cable is wound by the winding mechanism, and in the winding process of the cable, the surface of the cable is closely contacted with the cleaning brush 36, and dust adhered to the surface of the cable is treated by the cleaning brush 36;
step five, finishing production: and (4) taking up and packaging the cable passing through the cable processing equipment by using a winding mechanism, and finishing the production of the low-smoke halogen-free BI-level fire-resistant power cable.
Referring to fig. 3 and 4, the processing equipment for the power cable comprises an equipment box 4 and two side plates 5 fixed on two sides of the equipment box 4, a traction assembly 1 is arranged inside the equipment box 4, an installation frame 6 is fixedly connected inside the equipment box 4 through screws, a drying mechanism 2 is arranged on the left side inside the installation frame 6, a cleaning mechanism 3 is arranged on the right side inside the installation frame 6, material holes 7 are formed in the two side plates 5, a first limiting frame 8 and a second limiting frame 9 are fixedly connected on two sides of the bottom of the inner wall of the equipment box 4 respectively, and the tops of the first limiting frame 8 and the second limiting frame 9 are connected with the bottoms of the drying frame 22 and the cleaning frame 32 respectively in a clamped mode.
Referring to fig. 5, the traction assembly 1 includes two linear sliding rails 11 fixed on the front and back sides of the inner wall of the mounting frame 6 and two linear motors 12 located on the surfaces of the linear sliding rails 11 and sliding, wherein one sides of the two linear motors 12 opposite to each other are fixedly connected with a first servo electric cylinder 13, one ends of driving shafts of the two first servo electric cylinders 13 are fixedly connected with clamping blocks 14, one sides of the two clamping blocks 14 opposite to each other are respectively provided with an arc-shaped groove 15, and the inner walls of the two arc-shaped grooves 15 are respectively fixedly connected with a rubber pad 16.
Please refer to fig. 6, the drying mechanism 2 includes a hot air blower 21 fixed on the left side of the top of the mounting frame 6 and a drying frame 22 fixed on the left side of the inside of the mounting frame 6, an air guiding pipe 23 is communicated with one end of an air outlet of the hot air blower 21, and a bottom end of the air guiding pipe 23 penetrates through the mounting frame 6 and extends to the inside of the mounting frame 6, an air cavity flow channel 24 is provided inside the drying frame 22, and the air guiding pipe 23 extends to the inside of the one end of the inside of the mounting frame 6 and the inside of the air cavity flow channel 24, a through hole one 25 is provided inside the drying frame 22, and the top and the bottom of the inner wall of the through hole one 25 are fixedly connected with air outlet pipes 26, and the insides of the two air outlet pipes 26 are communicated with the inside of the air cavity flow channel 24.
Referring to fig. 7, the cleaning mechanism 3 includes a connecting frame 31 fixed on the right side of the top of the mounting frame 6 and a cleaning frame 32 fixed on the bottom of the connecting frame 31, both sides of the connecting frame 31 are provided with clamping components 33, and both the clamping components 33 are movably connected with the inside of the mounting frame 6, a through hole two 34 is provided inside the cleaning frame 32, both the upper and lower sides inside the through hole two 34 are movably connected with movable plates 35, a cleaning brush 36 is fixedly connected to one side of the two movable plates 35 opposite to each other, a servo electric cylinder two 37 is fixedly connected to the top and the bottom of the inner wall of the through hole two 34, and one end of a driving shaft of the two servo electric cylinders two 37 is fixedly connected to one side of the two movable plates 35.
Referring to fig. 8, the clamping assembly 33 includes a pushing block 331 located inside the connecting frame 31 and a clamping block 332 located on two sides of the connecting frame 31, a sliding slot 333 is formed inside the connecting frame 31, a sliding rod 334 is fixedly connected inside the sliding slot 333, a sliding block 335 is slidably connected inside the sliding slot 333, the inside of the sliding block 335 is slidably connected to the surface of the sliding rod 334, the top and the bottom of the sliding block 335 are fixedly connected to the bottom of the pushing block 331 and the top of the clamping block 332, a spring 336 is sleeved on the surface of the sliding rod 334, two ends of the spring 336 are fixedly connected to one side of the sliding block 335 and one side of the inner wall of the sliding slot 333, and a clamping slot matched with the clamping block 332 is formed inside the mounting frame 6.
Example 2
The present embodiment is different from embodiment 1 in that:
the preparation method of the polyolefin material comprises the following steps:
s21, taking 120 parts of polyolefin, 30 parts of nano silicon dioxide, 8 parts of dispersing agent, 5 parts of foaming agent and 5 parts of heat stabilizer;
s22, adding the taken materials into an internal mixer at the same time, starting a roller, heating to 200 ℃ at the rotating speed of 40r/min, and then preserving heat for 60min to uniformly disperse the mixed materials in a molten state;
s23, introducing the product obtained in the internal mixer into a high-speed stirrer for stirring treatment, heating to 240 ℃ at the rotating speed of 16000r/min, and stirring for 10 min;
and S24, feeding the product after stirring treatment into a double-screw extruder for extrusion granulation to obtain the polyolefin material.
Example 3
The present embodiment is different from embodiment 1 in that:
the preparation method of the polyolefin material comprises the following steps:
s21, taking 110 parts of polyolefin, 25 parts of nano silicon dioxide, 7 parts of dispersing agent, 3 parts of foaming agent and 3 parts of heat stabilizer;
s22, adding the taken materials into an internal mixer at the same time, starting a roller, heating to 200 ℃ at the rotating speed of 35r/min, and then preserving heat for 45min to uniformly disperse the mixed materials in a molten state;
s23, introducing the product obtained in the internal mixer into a high-speed stirrer for stirring treatment, heating to 240 ℃ at the rotating speed of 13000r/min, and stirring for 7 min;
and S24, feeding the product after stirring treatment into a double-screw extruder for extrusion granulation to obtain the polyolefin material.
And those not described in detail in this specification are well within the skill of those in the art.
The working principle of the invention is as follows:
when the device is used, one end of a cable body 10 after cooling detection passes through a material hole 7 in a side plate 5 and enters into an equipment box 4, an operation controller opens a switch of a traction assembly 1, a driving shaft of two servo electric cylinders I13 extends out to respectively drive two clamping blocks 14 to move relatively, one end of the cable body 10 is clamped through an arc-shaped groove 15 between opposite sides of the two clamping blocks 14, one sides of rubber pads 16 in the two arc-shaped grooves 15 are respectively contacted with two sides of the surface of the cable body 10 to ensure the stability of the cable body 10 between the two clamping blocks 14, two linear motors 12 respectively perform synchronous displacement on the surfaces of two linear slide rails 11, the cable body 10 is pulled to move in the equipment box 4, the operation controller opens a switch of a hot air fan 21, hot air is generated through the hot air fan 21, and enters an air cavity flow channel 24 in a drying rack 22 through an air guide pipe 23, finally, hot air is sprayed out from the air cavity flow passage 24 through the air outlet pipes 26, one end of the cable body 10 enters the drying frame 22 through traction, hot air sprayed out from the upper air outlet pipe 26 and the lower air outlet pipe 26 is used for quickly drying water stains on the surface of the cable body 10, the dried cable body continues to move rightwards in the equipment box 4 under the driving of the traction assembly 1, one end of the cable body 10 penetrates through the second through hole 34 in the cleaning frame 32, the operation controller opens the second servo electric cylinder 37 switch, the second servo electric cylinder 37 driving shaft drives the movable plate 35 to move, the cleaning brush 36 between the two movable plates 35 coats the surface of the cable body 10, then the traction assembly 1 sends one end of the cable body 10 out from the material hole 7 in the side plate 5 on the right side, the cable is wound by the winding mechanism, and in the winding process of the cable, carry out the in close contact with between the surface of cable and the cleaning brush 36, handle the dust of cable surface adhesion through cleaning brush 36, after cable processing treatment facility uses a period, cleaning brush 36 in the clearance mechanism is changed, pull down mounting bracket 6 from the inside of equipment box 4 this moment, change cleaning brush 36 to the inside of fly leaf 35, when maintaining clearance mechanism 3 whole, through pulling subassembly 1 and pull down from the inside of mounting bracket 6, through inside promotion ejector pad 331 that pushes away to the inboard, ejector pad 331 drives slider 335 and slides at the surface of slide bar 334, thereby realize that fixture block 332 withdraws from the inside of draw-in groove, remove the position of restricting between link 31 and the mounting bracket 6, thereby pull down clearance mechanism 3 from the inside of mounting bracket 6 and maintain.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A fire-resistant power cable of low smoke and zero halogen BI level which characterized in that: the cable comprises a cable body (10), wherein the cable body (10) comprises a cable conductor (101), a protective sleeve (102), a flame-retardant layer (103), an inner liner layer (104), a shielding layer (105), a halogen-free layer (106), a reinforcing strip (107) and a flame-retardant filling rope (108), the cable conductor (101) is arranged in the halogen-free layer (106), the reinforcing strip (107) is arranged between the adjacent cable conductors (101), the flame-retardant filling rope (108) is arranged between the inside of the halogen-free layer (106) and the surface of the cable conductor (101), the halogen-free layer (106) is arranged in the shielding layer (105), the shielding layer (105) is arranged in the inner liner layer (104), the inner liner layer (104) is arranged in the flame-retardant layer (103), and the flame-retardant layer (103) is arranged in the protective sleeve (102);
the preparation method of the fire-resistant power cable comprises the following steps:
step one, preparing raw materials: preparing a power cable raw material cable conductor (101), a protective sleeve (102), a flame-retardant layer (103), an inner liner layer (104), a shielding layer (105), a halogen-free layer (106), a reinforcing strip (107) and a flame-retardant filling rope (108);
step two, cable assembly: wrapping a halogen-free layer (106) on the surfaces of a cable conductor (101), a reinforcing strip (107) and a reinforcing strip (107), wrapping a shielding layer (105) on the surface of the halogen-free layer (106), wrapping an inner liner layer (104) on the surface of the shielding layer (105) in an extrusion wrapping mode, wrapping a flame-retardant layer (103) on the surface of the inner liner layer (104), and finally extruding and wrapping a protective sleeve (102) on the surface of the flame-retardant layer (103) through an extruder to obtain a cable body (10);
step three, cooling detection: the cable body (10) penetrates through the cold water tank, the cable body (10) is cooled and formed through the cold water tank, and then performance detection is carried out on the formed cable body (10);
step four, processing treatment: one end of a cable body (10) which is subjected to cooling detection penetrates through a material hole (7) in a side plate (5) and enters the equipment box (4), an operation controller opens a switch of a traction assembly (1), a first servo electric cylinder (13) drive shaft extends out to respectively drive two clamping blocks (14) to move relatively, one end of the cable body (10) is clamped through an arc-shaped groove (15) between opposite sides of the two clamping blocks (14), one sides of rubber pads (16) in the two arc-shaped grooves (15) are respectively contacted with two sides of the surface of the cable body (10), the stability of the cable body (10) between the two clamping blocks (14) is ensured, two linear motors (12) respectively perform synchronous displacement on the surfaces of two linear sliding rails (11), the cable body (10) is pulled to move in the equipment box (4), the operation controller opens a switch of a hot air fan (21), hot air is generated by an air heater (21), the hot air enters an air cavity flow passage (24) in a drying frame (22) through an air guide pipe (23), finally the hot air is sprayed out from the air cavity flow passage (24) through an air outlet pipe (26), one end of a cable body (10) enters the drying frame (22) through traction, water stains on the surface of the cable body (10) are quickly dried by the hot air sprayed out from an upper air outlet pipe (26) and a lower air outlet pipe (26), the cable body after drying treatment is driven by a traction assembly (1) to move rightwards in an equipment box (4), one end of the cable body (10) passes through a second through hole (34) in a cleaning frame (32), a second servo electric cylinder (37) switch is opened by an operation controller, a second servo electric cylinder (37) is used for driving a movable plate (35) to move, a cleaning brush (36) between the two movable plates (35) coats the surface of the cable body (10), then, one end of the cable body (10) is sent out from a material hole (7) in the side plate (5) on the right side by the traction assembly (1), the cable is wound by the winding mechanism, the surface of the cable is in close contact with the cleaning brush (36) in the winding process of the cable, and dust adhered to the surface of the cable is treated by the cleaning brush (36);
step five, finishing production: and (4) taking up and packaging the cable passing through the cable processing equipment by using a winding mechanism, and finishing the production of the low-smoke halogen-free BI-level fire-resistant power cable.
2. The low smoke zero halogen BI-level fire resistant power cable of claim 1, wherein: the protective sleeve (102) and the halogen-free layer (106) are both made of halogen-free low-smoke polyolefin materials, and the preparation method of the polyolefin materials comprises the following steps:
s21, taking 120 parts of polyolefin 100, 20-30 parts of nano silicon dioxide, 6-8 parts of dispersing agent, 2-5 parts of foaming agent and 2-5 parts of heat stabilizer;
s22, adding the taken materials into an internal mixer at the same time, starting a roller, heating to 200 ℃ at the rotating speed of 30-40r/min, and then preserving heat for 30-60min to uniformly disperse the mixed materials in a molten state;
s23, introducing the product obtained in the internal mixer into a high-speed stirrer for stirring treatment, raising the temperature to 240 ℃ at the rotating speed of 8000-;
and S24, feeding the product after stirring treatment into a double-screw extruder for extrusion granulation to obtain the polyolefin material.
3. The low smoke zero halogen BI-level fire resistant power cable of claim 1, wherein: the flame-retardant layer (103) is made of aluminum silicate fiber woven materials, the thickness of the flame-retardant layer (103) is 6-8 mm, the inner liner layer (104) is filled with insulating materials, the shielding layer (105) is composed of a metal film winding layer and a metal wire woven net layer, the thickness of the shielding layer (105) is 2-3 mm, and the flame-retardant filling rope (108) is made of low-smoke halogen-free flame-retardant materials.
4. The low smoke zero halogen BI level fire resistant power cable of claim 3, wherein: the processing equipment for the power cable comprises an equipment box (4) and two side plates (5) fixed on two sides of the equipment box (4);
the inside of equipment box (4) is provided with traction assembly (1), and the inside of equipment box (4) is through screw fixedly connected with mounting bracket (6), the inside left side of mounting bracket (6) is provided with drying mechanism (2), and the inside right side of mounting bracket (6) is provided with clearance mechanism (3), two material hole (7) have all been seted up to the inside of curb plate (5).
5. The low smoke zero halogen BI level fire resistant power cable of claim 4, wherein: the traction assembly (1) comprises two linear slide rails (11) fixed on the front and back surfaces of the inner wall of the mounting frame (6) and two linear motors (12) located on the surfaces of the linear slide rails (11) and sliding;
two equal fixedly connected with servo electric jar (13) in one side that linear electric motor (12) are relative, and the equal fixedly connected with clamp splice (14) of one end of two servo electric jar (13) drive shafts, two arc wall (15) have all been seted up to one side that clamp splice (14) are relative, and the equal fixedly connected with rubber pad (16) of inner wall of two arc wall (15).
6. The low smoke zero halogen BI level fire resistant power cable of claim 4, wherein: the drying mechanism (2) comprises a hot air blower (21) fixed on the left side of the top of the mounting frame (6) and a drying frame (22) fixed on the left side in the mounting frame (6);
one end of the air outlet of the air heater (21) is communicated with an air guide pipe (23), the bottom end of the air guide pipe (23) penetrates through the mounting frame (6) and extends to the inside of the mounting frame (6), an air cavity flow channel (24) is formed in the inside of the drying frame (22), the air guide pipe (23) extends to one end of the inside of the mounting frame (6) and is communicated with the inside of the air cavity flow channel (24), a through hole I (25) is formed in the inside of the drying frame (22), the top and the bottom of the inner wall of the through hole I (25) are fixedly connected with an air outlet pipe (26), and the inside of the air outlet pipe (26) is communicated with the inside of the air cavity flow channel (24).
7. The low smoke zero halogen BI level fire resistant power cable of claim 4, wherein: the cleaning mechanism (3) comprises a connecting frame (31) fixed on the right side of the top of the mounting frame (6) and a cleaning frame (32) fixed at the bottom of the connecting frame (31);
the both sides of link (31) all are provided with joint subassembly (33), and two joint subassemblies (33) all with the inside swing joint of mounting bracket (6), through-hole two (34) have been seted up to the inside of clean frame (32), and the equal swing joint in the inside upper and lower side of through-hole two (34) has fly leaf (35), two the equal fixedly connected with of one side that fly leaf (35) is relative clears up brush (36), the top of through-hole two (34) inner wall and the equal fixedly connected with servo electric jar two (37) in bottom, and the one end of two servo electric jar two (37) drive shafts respectively with one side fixed connection that two fly leaves (35) deviate from mutually.
8. The low smoke zero halogen BI-level fire resistant power cable of claim 7, wherein: the clamping assembly (33) comprises a push block (331) which is positioned in the connecting frame (31) and slides, and clamping blocks (332) which are positioned on two sides of the connecting frame (31) and move;
spout (333) have been seted up to the inside of link (31), and the inside fixedly connected with slide bar (334) of spout (333), the inside sliding connection of spout (333) has slider (335), and the inside of slider (335) and the surface sliding connection of slide bar (334), the top and the bottom of slider (335) respectively with ejector pad (331) bottom and fixture block (332) top fixed connection, the surface cover of slide bar (334) is equipped with spring (336), and the both ends of spring (336) respectively with one side of slider (335) and one side fixed connection of spout (333) inner wall, the draw-in groove with fixture block (332) looks adaptation is seted up to the inside of mounting bracket (6).
9. The low smoke zero halogen BI level fire resistant power cable of claim 4, wherein: the two sides of the bottom of the inner wall of the equipment box (4) are fixedly connected with a first limiting frame (8) and a second limiting frame (9) respectively, and the tops of the first limiting frame (8) and the second limiting frame (9) are connected with the bottoms of the drying frame (22) and the cleaning frame (32) in a clamped mode respectively.
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| CN113936848B (en) * | 2021-09-30 | 2024-01-23 | 上海长顺电梯电缆有限公司 | Fireproof B1-level cable |
| CN114999738B (en) * | 2022-06-10 | 2023-01-24 | 江西南远电缆有限公司 | Fireproof flame-retardant cable and cladding device for production thereof |
| CN116313261B (en) * | 2023-02-10 | 2023-10-20 | 江苏远通电缆有限公司 | Cable steel band armor structure and cable |
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