CN217521775U - Photoelectric composite cable for coal mine fire prevention - Google Patents
Photoelectric composite cable for coal mine fire prevention Download PDFInfo
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- CN217521775U CN217521775U CN202220569546.9U CN202220569546U CN217521775U CN 217521775 U CN217521775 U CN 217521775U CN 202220569546 U CN202220569546 U CN 202220569546U CN 217521775 U CN217521775 U CN 217521775U
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- 239000003245 coal Substances 0.000 title claims abstract description 24
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 230000002265 prevention Effects 0.000 title claims abstract description 12
- 239000010410 layer Substances 0.000 claims abstract description 94
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 51
- 239000000779 smoke Substances 0.000 claims abstract description 45
- 229920000098 polyolefin Polymers 0.000 claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 239000003063 flame retardant Substances 0.000 claims abstract description 16
- 239000011241 protective layer Substances 0.000 claims abstract description 16
- 239000004020 conductor Substances 0.000 claims description 10
- 239000013307 optical fiber Substances 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000010445 mica Substances 0.000 claims description 4
- 229910052618 mica group Inorganic materials 0.000 claims description 4
- 239000000843 powder 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
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 231100000614 poison Toxicity 0.000 abstract description 2
- 230000007096 poisonous effect Effects 0.000 abstract description 2
- 230000005622 photoelectricity Effects 0.000 abstract 1
- 206010000369 Accident Diseases 0.000 description 4
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- 238000002485 combustion reaction Methods 0.000 description 4
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- 238000002679 ablation Methods 0.000 description 2
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- 238000011161 development Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
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- 238000005065 mining Methods 0.000 description 2
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- 231100000331 toxic Toxicity 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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Abstract
The utility model discloses an optical-electric composite cable for coal mine fire prevention in the field of composite cables, which comprises a cable core and a protective layer for wrapping the cable core; the protective layer is provided with a fireproof layer, an armor layer and a halogen-free low-smoke polyolefin protective layer from inside to outside; a low-smoke halogen-free high-flame-retardant belt is wrapped around the fire-retardant layer and the cable core, the fire-retardant layer and the armor layer, and the armor layer and the halogen-free low-smoke polyolefin sheath layer; the cable core comprises the fire-resistant electric unit and the fire-resistant optical unit; an inorganic fire-insulating filling layer is filled between the fire-resistant electric unit and the fire-resistant optical unit; the utility model provides the high fire-retardant fire prevention's of compound cable of photoelectricity ability reduces poisonous flue gas and corrosive gas's release during the burning.
Description
Technical Field
The utility model belongs to the technical field of compound cable, concretely relates to photoelectric composite cable for colliery is prevented fires.
Background
With the continuous development of science and technology, the mechanization degree of coal mining is higher and higher, and the cable is widely applied to a coal mine underground power supply network. Due to the complex working environment of the underground coal mine, the cable works in the severe environment for a long time, so that cable accidents occur frequently, and according to statistics, cable fire accidents are more frequent in recent years. The underground cable fire accident has the characteristics of strong concealment, high spreading speed, wide spread range, difficult rescue, high toxicity and the like, and once the accident happens, the normal production of the underground coal mine can be influenced, and the life safety of underground miners can be seriously threatened. Therefore, the method researches the reasons of the cable fire accidents under the coal mine, adopts corresponding cable fire prevention measures to prevent the cable fire accidents, and has very important significance for ensuring the safety production of coal mine enterprises.
The development of the mine cable products in China is heading towards high-capacity and high-voltage grades, and the photoelectric composite cable technology of the mine cable products becomes one of core technologies for developing automation and remote monitoring of coal mining equipment. The photoelectric composite cable for the coal mine integrates optical fibers and transmission copper wires, can solve the problems of equipment power utilization, signal transmission and intelligent monitoring simultaneously, enables an underground coal mine power grid to be intelligent, realizes intelligent monitoring and high-speed broadband communication of an underground coal mine power transmission and distribution network, but is poor in fireproof performance and can release a large amount of toxic smoke and corrosive gas when burning.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a photoelectric composite cable for colliery is prevented fires has improved the fire-retardant fire-proof ability of photoelectric composite cable, reduces toxic flue gas and corrosive gas's release during the burning.
In order to achieve the above object, on the one hand the utility model discloses the technical scheme who adopts is:
a photoelectric composite cable for coal mine fire prevention comprises a cable core and a protective layer used for wrapping the cable core; the protective layer is provided with a fireproof layer, an armor layer and a halogen-free low-smoke polyolefin protective layer from inside to outside; a low-smoke halogen-free high-flame-retardant belt is wrapped around the fire-retardant layer and the cable core, the fire-retardant layer and the armor layer, and the armor layer and the halogen-free low-smoke polyolefin sheath layer; the cable core comprises the fire-resistant electric unit and the fire-resistant optical unit; and an inorganic fire-insulating filling layer is filled between the fire-resistant electric unit and the fire-resistant optical unit.
Preferably, the fire-resistant electric unit comprises a conductor, a first fire-resistant layer and a first halogen-free low-smoke insulating layer in sequence from inside to outside; the conductor is made of copper, aluminum or aluminum alloy.
Preferably, the fireproof light unit comprises a multi-core optical fiber, a stainless steel sleeve, a second fireproof layer and a second halogen-free low-smoke insulating layer from inside to outside in sequence; and water-blocking powder is filled between the optical fibers.
Preferably, the first fire-resistant layer and the second fire-resistant layer are wrapped mica tapes.
Preferably, the first halogen-free low-smoke insulating layer and the second halogen-free low-smoke insulating layer are made of halogen-free low-smoke polyolefin or halogen-free low-smoke cross-linked polyolefin.
Preferably, the inorganic fire-insulating filling layer is magnesium hydroxide or aluminum hydroxide.
Preferably, the material of the fire-proof layer is halogen-free low-smoke ceramic polyolefin.
Preferably, the number of the fire-resistant electric units is 1 to 5 cores, the number of the fire-resistant optical units is 1 to 2 cores, and the number ratio of the fire-resistant electric units to the fire-resistant optical units is 1 to 1, 2 to 1, 3: to 1, 3 to 2, 4 to 1, 4 to 2, 5 to 1 or 5 to 2.
Compared with the prior art, the utility model discloses the beneficial effect who reaches:
in the utility model, low-smoke halogen-free high flame-retardant belts are wrapped around between the fireproof layer and the cable core, between the fireproof layer and the armor layer, and between the armor layer and the halogen-free low-smoke polyolefin protective layer, so that the interaction of each layer is prevented when the photoelectric composite cable is manufactured and bent, and the mechanical damage is caused; meanwhile, the integrity and continuity of each layer can be ensured when high-temperature combustion is carried out, and cracking is prevented.
The protective layer of the utility model is provided with a fireproof layer made of halogen-free low-smoke ceramic polyolefin; the fire-proof layer quickly forms a hard and complete shell along with the rise of temperature, the longer the ablation time is, the higher the temperature is, the harder the shell is, and the hard shell after combustion can play a good role in fire prevention and heat insulation protection; an inorganic fire-isolating filling layer is filled between the fire-resistant electric unit and the fire-resistant optical unit, and the inorganic fire-isolating filling layer is magnesium hydroxide or aluminum hydroxide; the inorganic fire-insulating filling layer releases water at high temperature to effectively reduce the temperature of the cable core, and can ensure the power transmission and optical signal transmission of the line for a certain time under the condition of fire.
The utility model discloses there is not steamed low cigarette polyolefin sheath, inorganic matter separate fire filling layer and low cigarette zero halogen high flame retardant belt and be low cigarette zero halogen material, can effectively reduce poisonous flue gas and corrosive gas's release.
Drawings
Fig. 1 is a structural diagram of an optical-electrical composite cable for coal mine fire prevention according to an embodiment of the present invention;
in the figure: 1 fireproof electric unit, 11 conductors, 12 first fireproof layer, 13 first halogen-free low-smoke insulating layer, 2 fireproof optical unit, 21 mutually isolated optical fiber, 22 water-blocking powder, 23 stainless steel sleeve, 24 second fireproof layer, 25 second halogen-free low-smoke insulating layer, 3 inorganic substance fire-insulating filling layer, 4 fireproof layer, 5 armor layer, 6 low-smoke halogen-free high-flame-retardant belt and 7 halogen-free low-smoke polyolefin protective layer.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention, but not for requirements that the present invention must be constructed and operated in a specific direction, and therefore, the present invention should not be construed as being limited thereto. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1, an optical-electrical composite cable for coal mine fire protection comprises a cable core and a protective layer for wrapping the cable core; the protective layer is provided with a fireproof layer 4, an armor layer 5 and a halogen-free low-smoke polyolefin protective layer 7 from inside to outside; the fireproof layer 4 is made of halogen-free low-smoke ceramic polyolefin;
a layer of low-smoke halogen-free glass fiber tape 6 with the thickness of 0.2mm is lapped and wrapped outside the cable core, then a layer of halogen-free low-smoke ceramic polyolefin with the thickness of 2mm is extruded and wrapped outside the cable core to serve as a fireproof layer 4, and after a layer of low-smoke halogen-free glass fiber tape 6 with the thickness of 0.2mm is lapped and wrapped outside the fireproof layer 4 in an overlapped mode, two layers of galvanized steel tapes with the thickness of 0.2mm are lapped and wrapped in a clearance mode to serve as armor layers 5; after the armor layer 5 is wrapped with a layer of low-smoke halogen-free glass fiber tape 6 with the thickness of 0.2mm in an overlapping mode, a layer of halogen-free low-smoke polyolefin protective layer 7 with the thickness of 2.0mm is extruded;
the low-smoke halogen-free high-flame-retardant belt 6 prevents mechanical damage caused by interaction of layers during manufacturing and bending of the photoelectric composite cable, and can ensure the integrity and continuity of the layers during high-temperature combustion to prevent cracking; the cable core comprises the fire-resistant electric unit 1 and the fire-resistant optical unit 2; an inorganic fire-insulating filling layer 3 is filled between the fire-resistant electric unit 1 and the fire-resistant optical unit 2; the inorganic fire-insulating filling layer 3 is magnesium hydroxide or aluminum hydroxide.
The fire-resistant electric unit 1 comprises a conductor 11, a first fire-resistant layer 12 and a first halogen-free low-smoke insulating layer 13 from inside to outside in sequence; the conductor 11 is made of soft copper stranded conductor, and the cross section of the conductor 11 is 70mm 2 (ii) a Two layers of mica tapes with the thickness of 0.2mm are lapped outside the conductor 11 in an overlapping way to serve as a first fire-resistant layer 12;
the fire-resistant light unit 2 comprises an optical fiber 21, a stainless steel sleeve 23 with the thickness of 0.2mm, a second fire-resistant layer 24 and a second halogen-free low-smoke insulating layer 25 in sequence from inside to outside; a 6-core optical fiber 21 is arranged in the stainless steel sleeve 23, and gaps among the optical fibers 21 are filled with water-blocking powder 22; two layers of mica tapes with the thickness of 0.2mm are lapped and wrapped outside the stainless steel sleeve 23 to serve as a second fire-resistant layer 24; the first halogen-free low-smoke insulating layer 13 and the second halogen-free low-smoke insulating layer 25 are made of halogen-free low-smoke polyolefin or halogen-free low-smoke cross-linked polyolefin.
The first fire-resistant layer 12, the second fire-resistant layer 24, the inorganic fire-insulating filling layer 3 and the fire-resistant layer 4 can quickly form a tight and hard complete shell along with the rise of temperature, the higher the ablation time is, the higher the temperature is, the harder the shell is, the hard shell after combustion can play a good role in fire prevention and heat insulation protection, particularly, the inorganic fire-insulating filling layer 3 can release water in the shell to effectively reduce the temperature of a cable core, and the power transmission and optical signal transmission of a circuit in a certain time under the fire condition can be guaranteed.
The number of the fire-resistant electrical units can be selected from 1 to 5 cores, the number of the fire-resistant electrical units in this embodiment is 3, the number of the fire-resistant optical units in this embodiment is 1 to 2 cores, the number of the fire-resistant optical units in this embodiment is 1, and the number ratio of the fire-resistant electrical units to the fire-resistant optical units can be selected from 1 to 1, 2 to 1, 3: 2, 4: 1, 4: 2, 5: 1 or 5: 2; in this embodiment, the ratio of the number of the fire-resistant electric units to the number of the fire-resistant optical units is 3 to 1.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (8)
1. The photoelectric composite cable for coal mine fire prevention is characterized by comprising a cable core and a protective layer for wrapping the cable core; the protective layer is provided with a fireproof layer (4), an armor layer (5) and a halogen-free low-smoke polyolefin protective layer (7) from inside to outside; a low-smoke halogen-free high-flame-retardant belt (6) is wrapped around the fire-retardant layer (4) and the cable core, the fire-retardant layer (4) and the armor layer (5), and the armor layer (5) and the halogen-free low-smoke polyolefin sheath layer (7); the cable core comprises a fire-resistant electric unit (1) and a fire-resistant optical unit (2); and an inorganic fire-insulating filling layer (3) is filled between the fire-resistant electric unit (1) and the fire-resistant optical unit (2).
2. The photoelectric composite cable for coal mine fire protection according to claim 1, wherein the fire-resistant electric unit (1) comprises a conductor (11), a first fire-resistant layer (12) and a first halogen-free low-smoke insulating layer (13) from inside to outside; the conductor (11) is made of copper, aluminum or aluminum alloy.
3. The photoelectric composite cable for coal mine fire prevention according to claim 2, wherein the fire-resistant light unit (2) comprises a multi-core optical fiber (21), a stainless steel sleeve (23), a second fire-resistant layer (24) and a second halogen-free low-smoke insulating layer (25) from inside to outside; and water-blocking powder (22) is filled between the optical fibers (21).
4. The photoelectric composite cable for coal mine fire protection according to claim 3, wherein the first and second flame retardant layers (12, 24) are wrapped mica tapes.
5. The photoelectric composite cable for coal mine fire prevention according to claim 3, wherein the material of the first halogen-free low-smoke insulating layer (13) and the second halogen-free low-smoke insulating layer (25) is halogen-free low-smoke polyolefin or halogen-free low-smoke cross-linked polyolefin.
6. The photoelectric composite cable for coal mine fire protection according to claim 1, wherein the inorganic fire-insulating filling layer (3) is magnesium hydroxide or aluminum hydroxide.
7. The photoelectric composite cable for coal mine fire protection according to claim 1, wherein the material of the fire-proof layer (4) is halogen-free low-smoke ceramic polyolefin.
8. The photoelectric composite cable for coal mine fire protection according to any one of claims 1 to 7, wherein the number of the fire-resistant electric units (1) is 1 to 5 cores, the number of the fire-resistant optical units (2) is 1 to 2 cores, and the number ratio of the fire-resistant electric units (1) to the fire-resistant optical units (2) is 1 to 1, 2 to 1, 3: 1, 3 to 2, 4 to 1, 4 to 2, 5 to 1 or 5 to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220569546.9U CN217521775U (en) | 2022-03-16 | 2022-03-16 | Photoelectric composite cable for coal mine fire prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220569546.9U CN217521775U (en) | 2022-03-16 | 2022-03-16 | Photoelectric composite cable for coal mine fire prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217521775U true CN217521775U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220569546.9U Active CN217521775U (en) | 2022-03-16 | 2022-03-16 | Photoelectric composite cable for coal mine fire prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217521775U (en) |
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2022
- 2022-03-16 CN CN202220569546.9U patent/CN217521775U/en active Active
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240123 Address after: 214000, No. 58 Mashan Hushan Road, Binhu District, Wuxi City, Jiangsu Province Patentee after: Hongtu Optoelectronic Cable (Wuxi) Co.,Ltd. Country or region after: China Address before: No. 11, Xinke 4th Road, high tech Development Zone, Pukou District, Nanjing, Jiangsu 210012 Patentee before: JIANGSU HITEKER Co.,Ltd. Country or region before: China |