CN111029008A - Fire early warning temperature sensing photoelectric composite cable - Google Patents
Fire early warning temperature sensing photoelectric composite cable Download PDFInfo
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- CN111029008A CN111029008A CN201911277832.7A CN201911277832A CN111029008A CN 111029008 A CN111029008 A CN 111029008A CN 201911277832 A CN201911277832 A CN 201911277832A CN 111029008 A CN111029008 A CN 111029008A
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- cable
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- cable subunit
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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
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
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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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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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
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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
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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
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
- H01B7/324—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising temperature sensing means
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- Fire-Detection Mechanisms (AREA)
Abstract
The invention belongs to the technical field of photoelectric composite cables, and particularly relates to a fire early warning temperature-sensing photoelectric composite cable which comprises an optical cable subunit and a cable subunit, wherein the optical cable subunit comprises a PVC tight sheathing layer, a high-bending single-mode optical fiber, a high-flame-retardant low-smoke halogen-free sheathing layer and aramid yarn, the cable subunit comprises four metal wires, a temperature-sensitive material coating and a high-flame-retardant PVC sheathing layer, the outer wall of each metal wire is coated with the temperature-sensitive material coating, the high-flame-retardant PVC sheathing layer is arranged outside the four metal wires, the spiral sheathing layers are wrapped outside the optical cable subunit and the cable subunit, the high-flame-retardant low-smoke halogen-free sheathing layer is extruded outside the spiral sheathing layers, and fireproof sponge is filled among the optical cable subunit, the cable subunit and the spiral sheathing layers; the invention uses a double temperature sensing alarm mode, outputs two paths of alarm signals to form alarm AND logic, and the two paths of signals and the alarm mode can basically avoid the occurrence of false alarm.
Description
Technical Field
The invention relates to the technical field of photoelectric composite cables, in particular to a fire early warning temperature sensing photoelectric composite cable.
Background
In the traditional optical cable process, a single alarm signal is mainly used, related protection measures are single, and the fire automatic alarm linkage system applied to the fire alarm at present is only in the risk of great damage and false alarm, the fire automatic alarm linkage system is started by double-signal linkage, signals of two fire alarm detectors are mainly used, and a temperature sensing optical cable and a temperature sensing electric cable are used for single-signal alarm, so that great unsafety and inaccuracy exist, the invention innovatively uses a double temperature sensing alarm mode, outputs two alarm signals to form alarm AND logic, firstly, the possibility of false alarm can be avoided, one signal and mode can generate false alarm possibility due to environmental factors or human factors, the two signals and the alarm mode can basically avoid the occurrence of false alarm, and even if one alarm mode fails, the other alarm mode can also carry out fire alarm, the invention can solve the above problems and can be widely applied to cable areas such as cable tunnels, cable galleries, cable interlayers and the like, belt conveyors, hydraulic stations, lubricating oil depots, oil pipe galleries and other oil supply system places, transformers, transformer substations (stations), motor control centers and other electric power switching device systems, wine depots, warehouses, shelf depots and other places, industrial processes and material conveying systems and other material conveying systems, Computer rooms, electrical control rooms, other clean plants and other places with higher fire risks and higher importance.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides a fire early warning temperature sensing photoelectric composite cable which has the characteristics of dual temperature sensing alarm modes and two paths of alarm signals.
(II) technical scheme
In order to solve the problems, the invention provides a fire early warning temperature-sensing photoelectric composite cable, which comprises an optical cable subunit and a cable subunit, wherein the optical cable subunit comprises a PVC tight sheathing layer, a high-bending single-mode optical fiber, a high-flame-retardant low-smoke halogen-free sheathing layer and aramid yarn, the aramid yarn is arranged inside the high-flame-retardant low-smoke halogen-free sheathing layer, the PVC tight sheathing layer is arranged inside the aramid yarn, the high-bending single-mode optical fiber is arranged inside the PVC tight sheathing layer, the cable subunit comprises metal wires, a temperature-sensing material coating and the high-flame-retardant PVC sheathing layer, the number of the metal wires is four, the temperature-sensing material coating is coated on the outer wall of the metal wires, the high-flame-retardant PVC sheathing layer is arranged outside the metal wires, a spiral sheathing layer is arranged outside the optical cable subunit and the cable wrapping subunit, and a high-flame-retardant low-smoke halogen, fireproof sponge is filled among the optical cable subunit, the cable subunit and the spiral armor layer.
Preferably, the outside of the high-bending single-mode optical fiber is coated with a PVC tight-sleeved sheath to form a 0.9mm tight sleeve.
Preferably, the optical cable subunit is of a single-core circular structure with the diameter of 3.0 mm.
Preferably, the optical cable subunit and the electric cable subunit are stranded in a spiral armor layer.
Preferably, the wire has a diameter of 0.6 mm.
The technical scheme of the invention has the following beneficial technical effects:
the novel double temperature sensing alarm mode of the patent uses double temperature sensing alarm modes, two paths of alarm signals are output, alarm 'AND' logic is formed, firstly, the possibility of false alarm can be avoided, one path of signal and mode can generate the possibility of false alarm due to environmental factors or human factors, the two paths of signal and alarm mode can basically avoid the occurrence of false alarm, secondly, even if one alarm mode breaks down and cannot be used, the other alarm mode can carry out fire alarm, the situation that the alarm cannot be given out due to sudden failure of a circuit is prevented, huge loss is finally caused, meanwhile, the induction speed can be greatly increased due to the existence of the two alarm modes, the alarm signal can be sent out by sensitively inducing temperature change in the early stage of fire occurrence, in addition, the mode of combining fireproof sponge and spiral armor is innovatively adopted, the impact resistance, the lateral pressure resistance and the whole impact resistance of the reinforced photoelectric composite cable, The high bending property and the fireproof and flame-retardant performance are completely different from other optical cable structures which use single-path alarm signals and are protected by steel wire armoring or glass yarn, and no related risk exists.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in figure 1, the fire early warning temperature-sensing photoelectric composite cable provided by the invention comprises an optical cable subunit and a cable subunit, wherein the optical cable subunit comprises a PVC tight sheathing layer 7, a high-bending single-mode optical fiber 8, a high-flame-retardant low-smoke halogen-free sheathing layer 5 and aramid yarn 6, the aramid yarn 6 is arranged inside the high-flame-retardant low-smoke halogen-free sheathing layer 5, the PVC tight sheathing layer 7 is arranged inside the aramid yarn 6, the high-bending single-mode optical fiber 8 is arranged inside the PVC tight sheathing layer 7, the cable subunit comprises metal wires 1, a temperature sensing material coating 2 and a high-flame-retardant PVC sheathing layer 3, the metal wires 1 are four, the temperature sensing material coating 2 is coated on the outer wall of each metal wire 1, the high-flame-retardant PVC sheathing layer 3 is arranged outside the four metal wires 1, a spiral sheathing layer 9 is arranged outside the optical cable subunit and the cable subunit, and the high-flame-retardant low-smoke, fireproof sponge 4 is filled among the optical cable subunit, the cable subunit and the spiral armor layer 9.
In this embodiment, it should be noted that the high-bend single-mode optical fiber 8 is covered with the PVC tight-buffered sheath 7 to form a 0.9mm tight-buffered sheath.
In this embodiment, it should be noted that the optical cable subunit is a single-core circular structure with a diameter of 3.0 mm.
In this embodiment, it should be noted that the optical cable subunit and the electrical cable subunit are stranded in the spiral armor layer 9.
In this example, the diameter of the wire 1 is 0.6 mm.
In this embodiment:
1. the double temperature sensing alarm mode is innovatively used, two paths of alarm signals are output to form alarm AND logic, the possibility of false alarm can be eliminated firstly, the possibility of false alarm can be generated due to environmental factors or human factors by one path of signals and mode, the occurrence of false alarm can be eliminated basically by the two paths of signals and the alarm mode, and even if one alarm mode fails and cannot be used, the other alarm mode can carry out fire alarm to prevent the failure of alarm due to sudden failure of a line and great loss from being caused, meanwhile, the induction speed can be greatly increased by the two alarm modes, and the alarm signals can be sent out by sensitively inducing temperature change at the early stage of fire occurrence;
2. the optical cable subunit uses high-bending optical fiber, high-flame-retardant PVC tight sleeve, and structure of aramid fiber and high-flame-retardant low-smoke halogen-free sheath, firstly the flame-retardant performance of the optical cable is greatly improved by the structure of double-layer high-flame-retardant sheath, secondly the structure is completely non-metal, and the micro outer diameter of 3mm, and the use of the high-bending optical fiber brings excellent complete performance for the optical cable, the optical cable subunit detects the temperature change along the whole optical fiber by utilizing the variable quantity of Raman (Raman) reflection along with the ambient temperature, the whole optical fiber is not only used for signal transmission, but also used for temperature detection, the temperature sensing detection coverage range is 100% of the whole length, the setting of the alarm area can be freely set in the whole length of the optical fiber through software, the alarm positioning precision is high, the minimum detection area can reach 0.5 m, no matter how the field subareas change, the requirements can be met, and the alarm detection logic of each subarea, The combination of three modes, namely temperature rise rate in a subarea (difference temperature) and difference between the highest temperature in the subarea and the average temperature in the subarea (even degree of the subarea temperature), ensures that early and reliable alarm is realized;
3. the cable subunit is twisted by four metal wires of 0.6mm, each metal wire is coated with a temperature sensing material, a layer of high flame-retardant PVC protective layer is extruded outside the twisted metal wires, and finally a cable subunit with the outer diameter of 3.0mm is formed, the cable subunit mainly outputs an alarm signal through resistance change between leads caused by ambient temperature change when the resistance change reaches a set alarm threshold value, the cable subunit has the restorable characteristic, is not damaged after alarming and can be repeatedly used, and the high flame-retardant PVC outer sheath has the characteristics of high flame retardance, corrosion resistance, wear resistance and the like;
4. the photoelectron units are twisted and then wrapped with a layer of fireproof sponge, and the fireproof sponge can absorb heat and decompose into incombustible substances at or close to the ignition temperature and can react with foam combustion products to produce the incombustible substances; the flame-retardant and heat-insulating photoelectric twisted unit has the advantages that the self-extinguishing of the fired part caused by combustion and smoke resistance is delayed, the flame-retardant performance, the heat-insulating performance and the heat-preserving performance of the photoelectric twisted unit are further improved, the good shockproof and buffer performances are provided for the whole photoelectric composite cable, and the shock resistance is excellent;
5. the spiral armor is carried out outside the fireproof sponge to form a soft armor protective layer, so that the side pressure resistance and the impact resistance of the photoelectric composite cable can be effectively enhanced on the premise of not influencing the bending performance of the photoelectric composite cable;
6. finally, a high-flame-retardant low-smoke halogen-free outer sheath is extruded outside the spiral armor layer, so that the outermost layer of the photoelectric composite cable is mechanically protected, and the flame retardant property of the photoelectric composite cable is further improved;
7. the photoelectric composite cable is high-temperature resistant, high in flame retardance, capable of continuously monitoring the whole line, capable of sensing temperature through optical fibers and cables, capable of giving an alarm through two paths of signals and capable of avoiding false alarm, and widely applied to cable areas such as cable tunnels, cable galleries, cable interlayers and the like, oil supply system places such as belt conveyors, hydraulic stations, lubricating oil depots, oil pipe galleries and the like, electric power switching device systems such as transformers, transformer substations (stations), motor control centers and the like, wine depots, warehouses, shelf depots and the like, industrial process and material conveying systems, computer rooms, electric control rooms, other clean plants and other places with high fire risks and high importance.
In the invention, the double temperature sensing alarm mode is innovatively used, two alarm signals are output to form alarm AND logic, firstly, the possibility of false alarm can be eliminated, one signal and mode can generate the possibility of false alarm due to environmental factors or human factors, the two signals and the alarm mode can basically eliminate the occurrence of false alarm, secondly, even if one alarm mode fails, the other alarm mode can carry out fire alarm, the situation that the alarm cannot be given out due to sudden failure of a line and huge loss is finally avoided, simultaneously, the induction speed can be greatly increased due to the existence of the two alarm modes, the alarm signal can be sent out by sensitively inducing temperature change at the early stage of fire occurrence, in addition, the mode of combining fireproof sponge and spiral armor is innovatively adopted, the impact resistance and the like of the whole photoelectric composite cable are enhanced, The cable has the advantages of lateral pressure resistance, high bending property, fire resistance and flame retardance, is completely different from other optical cable structures which use single-path alarm signals and steel wire armored protection or glass yarn protection, and has no related risks.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention.
Claims (5)
1. A fire early warning temperature-sensing photoelectric composite cable comprises an optical cable subunit and an electric cable subunit, and is characterized in that the optical cable subunit comprises a PVC tight-sleeved protective layer (7), high-bending single-mode optical fibers (8), a high-flame-retardant low-smoke halogen-free protective layer (5) and aramid yarns (6), the aramid yarns (6) are arranged inside the high-flame-retardant low-smoke halogen-free protective layer (5), the PVC tight-sleeved protective layer (7) is arranged inside the aramid yarns (6), the high-bending single-mode optical fibers (8) are arranged inside the PVC tight-sleeved protective layer (7), the electric cable subunit comprises metal wires (1), temperature-sensing material coatings (2) and a high-flame-retardant PVC protective layer (3), the number of the metal wires (1) is four, the temperature-sensing material coatings (2) are coated on the outer walls of the metal wires (1), the high-flame-retardant PVC protective layer (3) is arranged, the cable is characterized in that spiral armor layers (9) are arranged outside the optical cable subunit and the cable subunit in a wrapping mode, a high-flame-retardant low-smoke halogen-free outer sheath (10) is extruded outside the spiral armor layers (9), and fireproof sponge (4) are filled among the optical cable subunit, the cable subunit and the spiral armor layers (9).
2. A fire early warning temperature sensing photoelectric composite cable according to claim 1, wherein the high-bending single-mode optical fiber (8) is coated with a PVC tight-buffered sheath (7) to form a 0.9mm tight-buffered sheath.
3. A fire early warning temperature sensing photoelectric composite cable according to claim 1 or 2, wherein the optical cable subunit is a single core circular structure with a diameter of 3.0 mm.
4. A fire early warning temperature sensing photoelectric composite cable according to claim 3, wherein the optical cable subunits and the electrical cable subunits are stranded in a helical armor layer (9).
5. A fire early warning temperature sensing photoelectric composite cable according to claim 1, wherein the diameter of the metal wire (1) is 0.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911277832.7A CN111029008A (en) | 2019-12-13 | 2019-12-13 | Fire early warning temperature sensing photoelectric composite cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911277832.7A CN111029008A (en) | 2019-12-13 | 2019-12-13 | Fire early warning temperature sensing photoelectric composite cable |
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| Publication Number | Publication Date |
|---|---|
| CN111029008A true CN111029008A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911277832.7A Pending CN111029008A (en) | 2019-12-13 | 2019-12-13 | Fire early warning temperature sensing photoelectric composite cable |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102682910A (en) * | 2012-05-11 | 2012-09-19 | 宏安集团有限公司 | Photoelectric combination cable |
| CN203084869U (en) * | 2012-12-26 | 2013-07-24 | 无锡圣敏传感科技有限公司 | Long-distance high-sensitivity linear temperature-sensitive fire detector |
| CN104517667A (en) * | 2013-10-08 | 2015-04-15 | 国家电网公司 | Aluminum-based carbon fiber composite core wire with real-time temperature measuring function |
| CN105551668A (en) * | 2016-02-19 | 2016-05-04 | 无锡市恒汇电缆有限公司 | Environment-friendly composite high-voltage electric power cable for smart power grid and preparation method thereof |
| CN208111143U (en) * | 2018-05-23 | 2018-11-16 | 四川金开特种电线电缆有限公司 | A kind of high-strength cable |
| CN109599220A (en) * | 2018-12-07 | 2019-04-09 | 山东阳谷电缆集团有限公司 | It is a kind of to insulate from cable for measuring temperature |
| CN209388777U (en) * | 2019-01-25 | 2019-09-13 | 西安神盾网络科技有限责任公司 | A kind of ac power cable |
| KR102042455B1 (en) * | 2019-01-22 | 2019-11-08 | (주)그린파워 | Power cable with heat sensor line and over heat protection apparatus |
-
2019
- 2019-12-13 CN CN201911277832.7A patent/CN111029008A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102682910A (en) * | 2012-05-11 | 2012-09-19 | 宏安集团有限公司 | Photoelectric combination cable |
| CN203084869U (en) * | 2012-12-26 | 2013-07-24 | 无锡圣敏传感科技有限公司 | Long-distance high-sensitivity linear temperature-sensitive fire detector |
| CN104517667A (en) * | 2013-10-08 | 2015-04-15 | 国家电网公司 | Aluminum-based carbon fiber composite core wire with real-time temperature measuring function |
| CN105551668A (en) * | 2016-02-19 | 2016-05-04 | 无锡市恒汇电缆有限公司 | Environment-friendly composite high-voltage electric power cable for smart power grid and preparation method thereof |
| CN208111143U (en) * | 2018-05-23 | 2018-11-16 | 四川金开特种电线电缆有限公司 | A kind of high-strength cable |
| CN109599220A (en) * | 2018-12-07 | 2019-04-09 | 山东阳谷电缆集团有限公司 | It is a kind of to insulate from cable for measuring temperature |
| KR102042455B1 (en) * | 2019-01-22 | 2019-11-08 | (주)그린파워 | Power cable with heat sensor line and over heat protection apparatus |
| CN209388777U (en) * | 2019-01-25 | 2019-09-13 | 西安神盾网络科技有限责任公司 | A kind of ac power cable |
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Application publication date: 20200417 |