CN115116656A - Copper core crosslinked polyethylene insulation polyolefin sheath halogen-free fire-resistant cable - Google Patents
Copper core crosslinked polyethylene insulation polyolefin sheath halogen-free fire-resistant cable Download PDFInfo
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- CN115116656A CN115116656A CN202210811482.3A CN202210811482A CN115116656A CN 115116656 A CN115116656 A CN 115116656A CN 202210811482 A CN202210811482 A CN 202210811482A CN 115116656 A CN115116656 A CN 115116656A
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- copper core
- halogen
- connecting pipe
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1041—Screens specially adapted for reducing interference from external sources composed of a helicoidally wound wire-conductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/226—Helicoidally wound metal wires or tapes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—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
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
- H01B7/423—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid
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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
- H01B9/023—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of helicoidally wound tape-conductors
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Insulated Conductors (AREA)
Abstract
The invention relates to a copper core crosslinked polyethylene insulated polyolefin sheath halogen-free fireproof cable, belongs to the technical field of cables, and provides the copper core crosslinked polyethylene insulated polyolefin sheath halogen-free fireproof cable which comprises a copper core, wherein the copper core is bundled and included in a fireproof wrapping tape, an insulated filling layer is sleeved on the outer side of the fireproof wrapping tape, the insulated filling layer comprises a supporting frame, and the middle part of the supporting frame is fixedly connected with a connecting pipe. Fill through the insulating filling layer in the outside at the copper core, and the baffle cup jointed through the support frame outside is orderly neat packing with the filler, be convenient for carry out fire prevention through the filler to the copper core at insulating filling layer middle part and put out a fire, and the inside of connecting pipe carries out the merogenesis through the seal membrane, and through saving inert flame retardant gas behind connecting pipe and the cooling chamber intercommunication, be convenient for emit inert flame retardant gas fast behind flame destruction cooling chamber and fire prevention piece and extinguish flame, carry out the protection of the inside copper core of cable, avoid flame to stretch.
Description
Technical Field
The invention relates to a copper core crosslinked polyethylene insulation polyolefin sheath halogen-free fire-resistant cable, and belongs to the technical field of cables.
Background
The cable is an electric energy or signal transmission device and generally consists of a plurality of wires or groups of wires; typically a cable like rope made up of several or groups of conductors (at least two in each group) twisted together, with the conductors of each group being insulated from each other and usually twisted around a center, and being entirely surrounded by a highly insulating covering, the cable being characterized by internal electrical conduction and external insulation.
The existing flame-retardant polyethylene cable material is widely used for wires and cables, a halogen flame retardant is added, but the flame retardant has poor dispersibility, the mechanical property of the flame-retardant polyethylene cable material is more easily reduced, the flame-retardant polyethylene cable material is possibly burnt out under the condition of fire and cannot prevent the spread of the fire, and the flame-retardant cable which can limit the combustion in a local range, does not spread, keeps other various devices and avoids causing larger loss is needed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the flame retardant has poor dispersibility, is more easy to cause the mechanical property reduction of the flame-retardant polyethylene cable material, can be burnt out under the condition of fire, and cannot prevent the fire from spreading.
(II) technical scheme
In order to achieve the purpose, the invention provides a copper core crosslinked polyethylene insulating polyolefin sheath halogen-free fire-resistant cable, which comprises a copper core, wherein the copper core is bundled and included in a fireproof wrapping tape, an insulating filling layer is sleeved on the outer side of the fireproof wrapping tape, the insulating filling layer comprises a support frame, a connecting pipe is fixedly connected to the middle of the support frame, a partition plate is sleeved on the outer side of the middle of the connecting pipe, a threading hole is formed in the middle of the partition plate, a petal-shaped fireproof sheet is connected to the outer side of the threading hole, a cooling cavity in a pentagram shape is formed by cross connection of the middle of the threading hole, the inner wall of the cooling cavity is connected with a sleeve and is fixedly connected with the connecting pipe, fillers are filled on the outer side of the fireproof sheet, sealing films are arranged on the inner wall of the connecting pipe at equal intervals, and fire-avoiding devices are installed on the outer sides of the sealing films, the outside parcel of insulating filling layer has the stranding band, just the protective sheath has been cup jointed in the outside in stranding band.
Wherein, the protective sheath includes low smoke and zero halogen sheath, the mounting groove has been seted up at the middle part of low smoke and zero halogen sheath, the steel sheet has been cup jointed to the inside of mounting groove, the steel sheet is double-deck helical structure steel sheet and twines and cup joint in the pipe wall middle part of low smoke and zero halogen sheath.
Wherein, the fire prevention band is double-deck fire-resistant mica ribbon.
The fire extinguisher is supported by four to twelve layers of metal nets in a stacking manner, and a hole with the diameter of one millimeter is formed in the middle of the fire extinguisher.
Wherein the filler is fine sand or magnesium oxide powder.
The connecting pipe is connected with the cooling cavity through a connecting pipe, wherein through holes are formed in the pipe walls of the sleeve and the connecting pipe, the connecting pipe and the cooling cavity are communicated through an air passage, inert flame-retardant gas is filled in the connecting pipe and the cooling cavity, and the inert flame-retardant gas is nitrogen or carbon dioxide.
Wherein, protective sheath and insulating filling layer are made by low smoke and zero halogen polyolefin.
The connecting pipe is internally partitioned by a sealing film, and the length value of the partition is consistent with the length values of the cooling cavity and the filler.
(III) advantageous effects
The copper core crosslinked polyethylene insulating polyolefin sheath halogen-free fire-resistant cable provided by the invention has the beneficial effects that:
1. fill through the insulating filling layer in the outside at the copper core, and the baffle cup jointed through the support frame outside is orderly neat packing with the filler, be convenient for carry out fire prevention through the filler to the copper core at insulating filling layer middle part and put out a fire, and the inside of connecting pipe carries out the merogenesis through the seal membrane, and through saving inert flame retardant gas behind connecting pipe and the cooling chamber intercommunication, be convenient for emit inert flame retardant gas fast behind flame destruction cooling chamber and fire prevention piece and extinguish flame, carry out the protection of the inside copper core of cable, avoid flame to stretch.
2. Set up the mounting groove through the inside at the protective sheath, and at the double-deck steel sheet of inside coiling of mounting groove, protect low smoke and zero halogen sheath through the steel sheet, and increase the intensity of low smoke and zero halogen sheath, avoid low smoke and zero halogen sheath to appear buckling fracture in the use, the effectual protective effect who avoids the outside to destroy and lead to the protective sheath descends, and the setting of steel sheet is convenient for carry out the electromagnetic shield to the copper core of the inside parcel of protective sheath, improve the transmission efficiency of copper core, the use of the copper core of being convenient for.
3. Cut off through the seal membrane in the inside of connecting pipe and be a plurality of air chamber, carry out depositing of inert flame retardant gas through the air chamber, and the outside of seal membrane sets up and avoids firearm, cuts off the flame of connecting pipe somewhere through avoiding firearm, avoids the flame to appear lining up the burning in the inside of connecting pipe, guarantees the safe in utilization of insulating filling layer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a copper core crosslinked polyethylene insulating polyolefin sheath halogen-free fire-resistant cable provided by the present application;
fig. 2 is a cross-sectional view of a copper core crosslinked polyethylene insulated polyolefin sheathed halogen-free fire resistant cable provided herein;
FIG. 3 is a schematic view of a sheath of a copper core crosslinked polyethylene insulated polyolefin sheathed halogen-free fire resistant cable provided herein;
FIG. 4 is a schematic view of an insulation filling layer of a copper core crosslinked polyethylene insulation polyolefin sheath halogen-free fire-resistant cable provided by the present application;
fig. 5 is an exploded view of an insulation filling layer of a copper core crosslinked polyethylene insulation polyolefin sheath halogen-free fire-resistant cable provided by the present application;
FIG. 6 is a schematic view of a fire damper of a copper core crosslinked polyethylene insulating polyolefin sheath halogen-free fire-resistant cable provided by the present application;
fig. 7 is a schematic view at a position a of the structure of the copper core crosslinked polyethylene insulating polyolefin sheath halogen-free fire-resistant cable provided by the present application.
In the figure: 1. a protective sleeve; 11. a low smoke zero halogen sheath; 12. mounting grooves; 13. a steel sheet; 2. cabling belt; 3. an insulating filling layer; 31. a support frame; 32. a connecting pipe; 33. a partition plate; 34. a sleeve; 35. a fire-resistant sheet; 36. threading holes; 37. a filler; 38. a sealing film; 39. a cooling chamber; 4. fireproof wrapping tape; 5. a copper core; 6. an anti-fire device.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1-7, the embodiment provides a copper core crosslinked polyethylene insulating polyolefin sheath halogen-free fire-resistant cable, which includes a copper core 5, the copper core 5 is included in a bundle inside a fireproof wrapping tape 4, an insulating filling layer 3 is sleeved outside the fireproof wrapping tape 4, the insulating filling layer 3 includes a support frame 31, a connecting pipe 32 is fixedly connected to the middle of the support frame 31, a partition 33 is sleeved outside the middle of the connecting pipe 32, a threading hole 36 is formed in the middle of the partition 33, a petaloid fireproof sheet 35 is connected to the outside of the threading hole 36, a cooling cavity 39 in a pentagram shape is formed by cross-connecting the middle of the threading hole 36, the cooling cavity 39 is connected to a sleeve 34, the inner wall of the cooling cavity 39 is fixedly connected to the connecting pipe 32, a filler 37 is filled outside the fireproof sheet 35, sealing films 38 are arranged at equal intervals on the inner wall of the connecting pipe 32, and an anti-fire device 6 is installed outside the sealing films 38, insulating filling layer 3's outside parcel has the stranding band 2, and the protective sheath 1 has been cup jointed in the outside in stranding band 2.
Protective sheath 1 includes low smoke and zero halogen sheath 11, mounting groove 12 has been seted up at low smoke and zero halogen sheath 11's middle part, steel sheet 13 has been cup jointed to mounting groove 12's inside, steel sheet 13 cup joints the pipe wall middle part at low smoke and zero halogen sheath 11 for double-deck helical structure steel sheet and winding, steel sheet 13's installation is convenient for increase low smoke and zero halogen sheath 11's thickness and intensity, avoid receiving the protective effect who reduces self when destroying the damage in low smoke and zero halogen sheath 11 outside, and avoid the cable outside fracture to tie a knot, the use of the cable of being convenient for.
Keep away firearm 6 and pile up the support through four to twelve layers of metal mesh, and keep away the middle part of firer 6 and offer the hole that the diameter is a millimeter, cut off in the inside of connecting pipe 32 through keeping away firearm 6, be convenient for carry out the back-fire relief installation inside connecting pipe 32, avoid flame to stretch along the inner wall of connecting pipe 32, guarantee the automatic fire extinguishing effect of cable.
The filler 37 is fine sand or magnesia powder, the filler 37 is filled in the filler 37, the filler 37 can be broken out after the material on the outer sides of the protective sleeve 1 and the cabling wrapping belt 2 is burnt by flame, and the fire extinguishing seedlings are sprayed and pressed by the filler 37, so that the fire spread is avoided, and the cable is convenient to use.
All seted up the through-hole on the pipe wall of sleeve 34 and connecting pipe 32, and carry out the air flue intercommunication with connecting pipe 32 and cooling chamber 39, and the inside packing of connecting pipe 32 and cooling chamber 39 has inert flame retardant gas, and inert flame retardant gas is nitrogen gas or carbon dioxide, fill the flame retardant gas of inside packing behind sleeve 34 and the cooling chamber 39 intercommunication, be convenient for dispel the heat to cable inside in daily use, and carry out fire-retardant fire extinguishing when flame burning, stretch when effectively avoiding the cable burning, improve the safety in the cable use, reduce property equipment loss.
Protective sheath 1 and insulating filling layer 3 are made by low smoke and zero halogen polyolefin, all adopt low smoke and zero halogen material through being about to protective sheath 1 and insulating filling layer 3, are convenient for reduce the emission of smoke and dust when protective sheath 1 and insulating filling layer 3 burn, avoid the smoke and dust polluted environment, guarantee the health of environment.
The inside of connecting pipe 32 is cut off through seal membrane 38, and the length value of cutting off is all unanimous with the length value of cooling chamber 39, filler 37, cuts off connecting pipe 32 inside into the length unanimous with filler 37, makes the inside fixed length of cable divide the festival, and the effectual segmentation of being convenient for is fire-retardant, avoids flame to spread, reduces the loss.
Specifically, when the copper core crosslinked polyethylene insulating polyolefin sheath halogen-free fire-resistant cable is used: wrapping the copper cores 5 in bundles through the fireproof wrapping belts 4, sleeving the fireproof wrapping belts 4 and the copper cores 5 in the threading holes 36, sleeving the insulating filling layer 3 on the outer side of the cabling wrapping belts 2, wrapping the protective sleeve 1 on the outer side of the cabling wrapping belts 2, increasing the strength and toughness of the protective sleeve 1 through the steel sheets 13 in the strip of the protective sleeve 1, preventing the protective sleeve 1 from being damaged outside in the using process, ensuring the protective effect of the protective sleeve 1 on the copper cores 5 inside, ensuring the supporting frame 31 through the insulating filling layer 3, arranging partition plates 33 on the outer side of the supporting frame 31 at equal intervals, filling the filler 37 on the outer side of each partition plate 33, arranging a cooling cavity 39 in the middle of each partition plate 33, communicating the cooling cavity 39 with the connecting pipe 32 through a sleeve 34, keeping the circulation of air, facilitating cooling inside the cooling cavity 39, and preventing a large amount of heat from appearing on cables inside the threading holes 36, if partial fire occurs in the use process of the cable, the flame conducts layer-by-layer burning on the protective sleeve 1, the cabling bag belt 2 and the insulating filling layer 3, the low-smoke halogen-free sheath 11 is made of a flame-retardant halogen-free material, flame spreading is effectively inhibited, when the flame burns to the inside of the insulating filling layer 3, the filler 37 on the outer side of the support frame 31 is exposed, the filler 37 is sprayed out to extinguish the flame, when the flame continues to burn inwards, the fireproof sheet 35 and the cooling cavity 39 are burnt through, the cooling cavity 39 is connected with the inside of the connecting pipe 32, flame-retardant gas in the connecting pipe 32 is discharged to avoid flame burning, and the flame-retardant devices 6 are arranged in the connecting pipe 32 at equal intervals to avoid the flame from spreading along the inside of the connecting pipe 32 through the flame-retardant devices 6, so that flame expansion is avoided, and the use safety of the cable is ensured;
the outer side of the copper core 5 is filled with the insulating filling layer 3, the filler 37 is orderly and orderly filled with the partition plate 33 sleeved on the outer side of the support frame 31, the copper core 5 in the middle of the insulating filling layer 3 is convenient to prevent and extinguish fire through the filler 37, the inside of the connecting pipe 32 is segmented through the sealing film 38, the connecting pipe 32 is communicated with the cooling cavity 39 to store inert flame-retardant gas, the inert flame-retardant gas is conveniently and rapidly discharged after the flame damages the cooling cavity 39 and the fireproof sheet 35 to extinguish the flame, the copper core in the cable is protected, and flame spread is avoided; the installation groove 12 is formed in the protection sleeve 1, the double-layer steel sheet 13 is wound in the installation groove 12, the low-smoke halogen-free protection sleeve 11 is protected through the steel sheet 13, the strength of the low-smoke halogen-free protection sleeve 11 is improved, the low-smoke halogen-free protection sleeve 11 is prevented from being bent and broken in the use process, the protection effect of the protection sleeve 1 is effectively prevented from being reduced due to external damage, the arrangement of the steel sheet 13 is convenient for carrying out electromagnetic shielding on the copper core 5 wrapped in the protection sleeve 1, the transmission efficiency of the copper core 5 is improved, and the use of the copper core 5 is facilitated; through cutting off through seal membrane 38 in the inside of connecting pipe 32 and being a plurality of air chamber, carry out inert flame retardant gas's depositing through the air chamber, and the outside setting of seal membrane 38 is kept away firearm 6, cuts off the flame of connecting pipe 32 somewhere through keeping away firearm 6, avoids the flame to appear lining up the burning in the inside of connecting pipe 32, guarantees insulating filling layer 3's safety in utilization.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (8)
1. Copper core crosslinked polyethylene insulation polyolefin sheath halogen-free fire resisting cable, including copper core (5), its characterized in that: the copper core (5) is bundled in the fireproof belting (4), the insulating filling layer (3) is sleeved on the outer side of the fireproof belting (4), the insulating filling layer (3) comprises a support frame (31), a connecting pipe (32) is fixedly connected to the middle of the support frame (31), a partition plate (33) is sleeved on the outer side of the middle of the connecting pipe (32), a threading hole (36) is formed in the middle of the partition plate (33), a petal-shaped fireproof sheet (35) is connected to the outer side of the threading hole (36), a pentagonal cooling cavity (39) is formed by cross connection of the middle of the threading hole (36), the cooling cavity (39) is connected with a sleeve (34) and fixedly connected with the connecting pipe (32), a filler (37) is filled on the outer side of the fireproof sheet (35), sealing films (38) are arranged on the inner wall of the connecting pipe (32) at equal intervals, and fire avoiding device (6) is installed in the outside of seal membrane (38), the outside parcel of insulating filling layer (3) has stranding belting (2), just protective sheath (1) has been cup jointed in the outside of stranding belting (2).
2. The copper core crosslinked polyethylene insulated polyolefin sheath halogen-free fire resistant cable of claim 1, characterized in that: protective sheath (1) is including low smoke and zero halogen sheath (11), mounting groove (12) have been seted up at the middle part of low smoke and zero halogen sheath (11), steel sheet (13) have been cup jointed to the inside of mounting groove (12), steel sheet (13) are double-deck helical structure steel sheet and twine and cup joint the pipe wall middle part at low smoke and zero halogen sheath (11).
3. The copper core crosslinked polyethylene insulated polyolefin sheath halogen-free fire resistant cable of claim 1, characterized in that: the fireproof wrapping tape (4) is a double-layer fireproof mica wrapping tape.
4. The copper core crosslinked polyethylene insulated polyolefin sheath halogen-free fire resistant cable of claim 1, characterized in that: the fire-resistant device (6) is supported by four to twelve layers of metal meshes in a stacking manner, and a hole with the diameter of one millimeter is formed in the middle of the fire-resistant device (6).
5. The copper core crosslinked polyethylene insulated polyolefin sheath halogen-free fire resistant cable of claim 1, characterized in that: the filler (37) is fine sand or magnesium oxide powder.
6. The copper core crosslinked polyethylene insulated polyolefin sheath halogen-free fire resistant cable of claim 1, characterized in that: the through holes are formed in the pipe walls of the sleeve (34) and the connecting pipe (32), the connecting pipe (32) and the cooling cavity (39) are communicated through the air passages, inert flame-retardant gas is filled in the connecting pipe (32) and the cooling cavity (39), and the inert flame-retardant gas is nitrogen or carbon dioxide.
7. The copper core crosslinked polyethylene insulated polyolefin sheath halogen-free fire resistant cable of claim 1, characterized in that: the protective sleeve (1) and the insulating filling layer (3) are both made of low-smoke halogen-free polyolefin.
8. The copper core crosslinked polyethylene insulated polyolefin sheath halogen-free fire resistant cable of claim 1, characterized in that: the interior of the connecting pipe (32) is separated by a sealing film (38), and the length value of the separation is consistent with the length values of the cooling cavity (39) and the filler (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811482.3A CN115116656A (en) | 2022-07-11 | 2022-07-11 | Copper core crosslinked polyethylene insulation polyolefin sheath halogen-free fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811482.3A CN115116656A (en) | 2022-07-11 | 2022-07-11 | Copper core crosslinked polyethylene insulation polyolefin sheath halogen-free fire-resistant cable |
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| Publication Number | Publication Date |
|---|---|
| CN115116656A true CN115116656A (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210811482.3A Pending CN115116656A (en) | 2022-07-11 | 2022-07-11 | Copper core crosslinked polyethylene insulation polyolefin sheath halogen-free fire-resistant cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116598051A (en) * | 2023-07-17 | 2023-08-15 | 中尚线缆集团有限公司 | Armored copper core polyethylene cable |
-
2022
- 2022-07-11 CN CN202210811482.3A patent/CN115116656A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116598051A (en) * | 2023-07-17 | 2023-08-15 | 中尚线缆集团有限公司 | Armored copper core polyethylene cable |
| CN116598051B (en) * | 2023-07-17 | 2023-09-08 | 中尚线缆集团有限公司 | Armored copper core polyethylene cable |
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