CN219658440U - Mineral insulated metal sleeve flexible fireproof cable - Google Patents
Mineral insulated metal sleeve flexible fireproof cable Download PDFInfo
- Publication number
- CN219658440U CN219658440U CN202320228968.4U CN202320228968U CN219658440U CN 219658440 U CN219658440 U CN 219658440U CN 202320228968 U CN202320228968 U CN 202320228968U CN 219658440 U CN219658440 U CN 219658440U
- Authority
- CN
- China
- Prior art keywords
- armor
- metal
- interlocking
- sheath
- metal sheath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 85
- 239000002184 metal Substances 0.000 title claims abstract description 85
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 29
- 239000011707 mineral Substances 0.000 title claims abstract description 28
- 239000000919 ceramic Substances 0.000 claims abstract description 48
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 27
- 239000010445 mica Substances 0.000 claims abstract description 15
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 239000004945 silicone rubber Substances 0.000 claims description 13
- 238000009954 braiding Methods 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 4
- 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 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 3
- 239000000347 magnesium hydroxide Substances 0.000 description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model relates to a mineral insulated metal sleeve flexible fireproof cable which comprises a multi-strand cable core, inner jackets wrapped on the peripheries of the cable cores, and a mineral fireproof layer filled between the inner jackets and the cable cores, wherein the outer of each inner jacket is sequentially provided with a linkage armor metal jacket, a mica insulation layer and an outer jacket, and an armor gap of each linkage armor metal jacket is filled with a ceramic silicon rubber strip. According to the utility model, when exposed fire occurs, the ceramic silicon rubber strips form a hard ceramic shell after combustion and are adhered to the armor gap of the interlocking armor metal sheath, so that the interlocking armor metal sheath becomes a pipe body with good tightness, and an external water source can be effectively isolated from being immersed, and therefore, even when continuous fire occurs, the water source with highest efficiency can be adopted to extinguish fire without worrying about the occurrence of open circuit.
Description
Technical Field
The utility model relates to the technical field of fireproof cables, in particular to a mineral insulated metal sleeve flexible fireproof cable.
Background
Mineral insulated cables are mainly mineral insulated cables formed by filling mineral insulation (mainly magnesium oxide) in the cables, but flexible fireproof cables are produced in China due to various defects of the magnesium oxide fireproof cables. The flexible fireproof cable adopts the mica tape as an insulating medium for manufacturing the fireproof cable at home and abroad, the wrapping mica tape is also used as the insulating medium, the mixture of aluminum hydroxide and magnesium hydroxide is used as a mineral fireproof layer, and the outer metal protection layer develops structural forms of welding longitudinal wrapping aluminum sheaths, welding longitudinal wrapping copper sheaths, extrusion wrapping aluminum sheaths and the like.
The Chinese patent with publication number of CN204760074U proposes a mica insulation interlocking armoured metal sleeve protection super-flexible fireproof cable, wherein a cable core is formed by twisting a plurality of wire cores, and each wire core is composed of a twisted copper conductor, a mica insulation layer and an inorganic mineral fire insulation layer; the cable core is sequentially provided with a heat insulation protection functional layer, a high-toughness oxygen-isolation high-flame-retardance protective layer, a chain armor metal sheath protective layer and an outer sheath.
The related art in the above has the following drawbacks: the integral sleeve type copper or aluminum sheath can play a good protection effect on the cable core, but the bending radius of the cable is very large, the laying construction of the cable is very inconvenient, and the cable is not suitable for an application scene requiring a certain flexibility, but after the metal sheath is replaced by the interlocking armor metal sheath, the bending radius of the cable can be reduced, but the problem of poor waterproof performance of the cable inevitably occurs, and particularly, fire cannot be extinguished by a water source after fire.
Disclosure of Invention
The utility model provides a mineral insulated metal sleeve flexible fireproof cable, which aims to solve the problem that a flexible cable with a chain armoured metal sleeve cannot extinguish fire with a water source when being ignited.
The utility model provides a mineral insulated metal sleeve flexible fireproof cable which adopts the following technical scheme:
the utility model provides a flexible fireproof cable of mineral substance insulating metal sheath, includes stranded cable core, parcel in a plurality of the inner sheath of cable core periphery, packing be in the inner sheath with mineral substance flame retardant coating between the cable core, the inner sheath has set gradually chain armoured metal sheath, mica insulating layer and oversheath outward, it has ceramic silicone rubber strip to fill in the armoured gap of chain armoured metal sheath.
Further, the ceramic silicon rubber strips are sheet-shaped and spirally embedded in the armor gap of the interlocking armor metal sheath.
Furthermore, a flange embedded in the armoring concave part of the interlocking armoring metal sheath is integrally formed on one side of the ceramic silicon rubber strip exposed outside the interlocking armoring metal sheath.
Still further, still be provided with the glue layer between flange and the interlocking armor metal sheath.
Further, the outer side of the interlocking armoured metal sheath is provided with a frosted surface.
Still further, be provided with between mica insulating layer with interlocking armoured metal sheath be used for with ceramic silicone rubber strip is wrapped up in the weaving layer on the interlocking armoured metal sheath.
Further, the braiding layer is a metal braiding net or a glass fiber braiding net.
Furthermore, the mineral fireproof layer is formed by mixing aluminum hydroxide and magnesium hydroxide with glue.
In summary, the beneficial technical effects of the utility model are as follows: when the fireproof cable is placed in an open fire roasting scene, a ceramic silicon rubber strip arranged in an armor gap of the interlocking armor metal sheath forms a hard ceramic shell body after burning to be adhered to the armor gap of the interlocking armor metal sheath, and the ceramic shell body is not melted and does not drip in a fire environment, so that the ceramic shell body can effectively seal the armor gap of the interlocking armor metal sheath, the interlocking armor metal sheath becomes a tube body with good tightness, and an external water source can be effectively isolated from being immersed, so that even if a continuous fire disaster happens, a water source with highest efficiency can be adopted to extinguish a fire without worrying about the occurrence of a broken circuit.
Drawings
Fig. 1 is a cross-sectional view of the overall structure of an embodiment of the present utility model.
Fig. 2 is a cross-sectional view of an embodiment of the present utility model primarily for showing the interlocking armor metal sheath and the ceramic silicone strip connection structure.
Reference numerals: 1. a cable core; 2. an inner sheath; 3. a mineral fire-blocking layer; 4. interlocking armoured metal sheath; 5. a mica insulating layer; 6. an outer sheath; 7. a strip of ceramic silicone rubber; 8. a flange; 9. a braid.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiment of the utility model discloses a mineral insulated metal sleeve flexible fireproof cable. Referring to fig. 1 and 2, the flexible fireproof cable with the mineral insulated metal sleeve comprises a plurality of cable cores 1, an inner sheath 2 wrapped on the peripheries of the cable cores 1, and a mineral fireproof layer 3 filled between the inner sheath 2 and the cable cores 1, wherein a linkage armor metal sheath 4, a mica insulation layer 5 and an outer sheath 6 are sequentially arranged outside the inner sheath 2, and a ceramic silicon rubber strip 7 is filled in an armor gap of the linkage armor metal sheath 4. Wherein, inner sheath 2 and oversheath 6 are formed by low smoke zero halogen polyolefin extrusion, and mineral substance flame retardant coating 3 is aluminum hydroxide and magnesium hydroxide and glue mixture, and mica insulating layer 5 is mica tape around the package.
After the arrangement, when the fireproof cable is placed in an open fire roasting scene, the peripheral mica insulation layer 5 is firstly burnt into powder, and then the ceramic silicon rubber strips 7 arranged in the armor gaps of the interlocking armor metal sheath 4 form a hard ceramic shell after burning to be adhered to the armor gaps of the interlocking armor metal sheath 4, and the ceramic shell is not melted and dripped in a fire environment, so that the ceramic shell can effectively seal the armor gaps of the interlocking armor metal sheath 4, the interlocking armor metal sheath 4 becomes a tube body with good tightness, and can effectively isolate an external water source from being immersed, so that even if a continuous fire disaster occurs, the water source with highest efficiency can be adopted to extinguish a fire without worry about the occurrence of a broken circuit.
Further, in order to make the tightness of the ceramic silicone rubber strip 7 to the interlocking armor metal sheath 4 stronger after combustion ceramic, referring to fig. 1 and 2, on one hand, the ceramic silicone rubber strip 7 is sheet-shaped and is spirally embedded in the armor gap of the interlocking armor metal sheath 4; on the other hand, the side of the ceramic silicone rubber strip 7 exposed outside the interlocking armoured metal sheath 4 is integrally formed with a flange 8 embedded in the armoured concave part of the interlocking armoured metal sheath 4.
After the arrangement, the ceramic silicon rubber strip 7 embedded in the interlocking armor metal sheath 4 is in a complete strip shape, so that a ceramic shell formed by burning the ceramic silicon rubber strip 7 is also a complete spiral body as far as possible, and no fracture exists, thereby ensuring good sealing effect on the interlocking armor metal sheath 4; furthermore, through setting up flange 8 can further increase the ceramic shell that ceramic silicone rubber strip 7 produced after the burning and the contact area of chain armoured metal sheath 4 to increase the protection area, ceramic silicone rubber strip 7 and flange 8 also can not bulge outside chain armoured metal sheath 4 maximum cross-section circle simultaneously, can effectively control fireproof cable's circularity.
Meanwhile, a glue layer is further arranged between the flange 8 and the interlocking armor metal sheath 4, so that the installation of the ceramic silicon rubber strip 7 is facilitated, and the fit degree of the ceramic silicon rubber strip 7 and the interlocking armor metal sheath 4 is improved. Moreover, the outer side of the interlocking armoured metal sheath 4 can be further provided with a frosting surface, so that the adhesion and connection tightness between a ceramic shell formed by the ceramic silicon rubber strips 7 after combustion and the interlocking armoured metal sheath 4 are also stronger, and the falling probability of the ceramic shell from the interlocking armoured metal sheath 4 can be reduced.
In another embodiment, in order to further ensure that the ceramic silicone rubber strip 7 can be uniformly wrapped on the circumference of the interlocking armor metal sheath 4 during combustion, referring to fig. 1 and 2, a braiding layer 9 for tightly wrapping the ceramic silicone rubber strip 7 on the interlocking armor metal sheath 4 is arranged between the mica insulation layer 5 and the interlocking armor metal sheath 4, and the braiding layer 9 is a metal braiding net or a glass fiber braiding net, and copper wires are used for braiding when the metal braiding net is selected.
The metal woven mesh made of copper has a melting point temperature close to 1000 ℃, the glass fiber woven mesh also has a softening temperature close to 700 ℃, the woven layer 9 made of the material is used for wrapping the ceramic rubber strips on the interlocking armor metal sheath 4, and the ceramic shell can be tightly tied on the interlocking armor metal sheath 4 before and during the combustion of the ceramic rubber strips, so that the roundness of the ceramic shell, namely the overall wrapping property of the ceramic shell on the interlocking armor metal sheath 4, is ensured as much as possible.
The implementation principle of the mineral insulated metal sleeve flexible fireproof cable provided by the embodiment of the utility model is as follows: when the fireproof cable is in an open fire roasting scene, the ceramic silicon rubber strips 7 arranged in the armor gaps of the interlocking armor metal sheath 4 form a hard ceramic shell after burning to be adhered to the armor gaps of the interlocking armor metal sheath 4, and the ceramic shell is not melted and is not dripped in a fire environment, so that the ceramic shell can effectively seal the armor gaps of the interlocking armor metal sheath 4, the interlocking armor metal sheath 4 becomes a tube body with good tightness, and can effectively isolate an external water source from being immersed, so that even if a continuous fire is encountered, the water source with highest efficiency can be adopted to extinguish the fire without worrying about the occurrence of the condition of open circuit.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (7)
1. The utility model provides a flexible fireproof cable of mineral substance insulating metal sheath, its characterized in that includes stranded cable core (1), parcel in a plurality of inner sheath (2) of cable core (1) periphery, packing are in inner sheath (2) with mineral substance flame retardant coating (3) between cable core (1), inner sheath (2) have set gradually chain armor metal sheath (4), mica insulating layer (5) and oversheath (6) outward, it has ceramic silicone rubber strip (7) to pack in the armor gap of chain armor metal sheath (4).
2. A mineral insulated metal jacketed flexible fire cable according to claim 1, wherein the strips of ceramic silicone rubber (7) are sheet-like and helically embedded in the armor gap of the interlocking armor metal jacket (4).
3. The flexible fireproof cable of the mineral insulated metal sleeve according to claim 2, wherein a flange (8) embedded in an armor concave part of the interlocking armor metal sleeve (4) is integrally formed on one side of the ceramic silicon rubber strip (7) exposed outside the interlocking armor metal sleeve (4).
4. A mineral insulated metal jacketed flexible fire cable according to claim 3, wherein a glue layer is further provided between the flange (8) and the interlocking armoured metal sheath (4).
5. A mineral insulated metal jacketed flexible fire cable according to claim 1, wherein the outer side of the interlocking armoured metal jacket (4) is provided with a frosting.
6. The mineral insulated metal sheath flexible fireproof cable according to claim 1, wherein a braiding layer (9) for tightly wrapping the ceramic silicone rubber strips (7) on the interlocking armoured metal sheath (4) is arranged between the mica insulation layer (5) and the interlocking armoured metal sheath (4).
7. A mineral insulated metal jacketed flexible fire cable according to claim 6, wherein the braid (9) is a metal braid or a glass fiber braid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320228968.4U CN219658440U (en) | 2023-02-09 | 2023-02-09 | Mineral insulated metal sleeve flexible fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320228968.4U CN219658440U (en) | 2023-02-09 | 2023-02-09 | Mineral insulated metal sleeve flexible fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219658440U true CN219658440U (en) | 2023-09-08 |
Family
ID=87860702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320228968.4U Active CN219658440U (en) | 2023-02-09 | 2023-02-09 | Mineral insulated metal sleeve flexible fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219658440U (en) |
-
2023
- 2023-02-09 CN CN202320228968.4U patent/CN219658440U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |