WO2020093440A1 - 光纤复合防火电缆以及智能预警通讯设备 - Google Patents

光纤复合防火电缆以及智能预警通讯设备 Download PDF

Info

Publication number
WO2020093440A1
WO2020093440A1 PCT/CN2018/116021 CN2018116021W WO2020093440A1 WO 2020093440 A1 WO2020093440 A1 WO 2020093440A1 CN 2018116021 W CN2018116021 W CN 2018116021W WO 2020093440 A1 WO2020093440 A1 WO 2020093440A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
optical fiber
fiber composite
early warning
composite fireproof
Prior art date
Application number
PCT/CN2018/116021
Other languages
English (en)
French (fr)
Inventor
万育萍
任虹光
郑建平
刘海峰
Original Assignee
江苏亨通电力电缆有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏亨通电力电缆有限公司 filed Critical 江苏亨通电力电缆有限公司
Publication of WO2020093440A1 publication Critical patent/WO2020093440A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • 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
    • 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
    • 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
    • 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
    • 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
    • H01B7/24—Devices affording localised protection against mechanical force or pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks

Definitions

  • the present disclosure relates to the technical field of optical communication transmission, in particular to an optical fiber composite fireproof cable and intelligent early warning communication equipment.
  • the wire and cable in the prior art are basically passive fireproof, that is, when a fire occurs, the wire and cable with stronger fireproof ability can continue to provide Power supply for a certain period of time without loss of function immediately.
  • none of the wires and cables in the prior art can be used in conjunction with equipment such as fire warning or monitoring to predict or detect in the early stages of fire danger, thereby effectively avoiding the occurrence of fire or the aggravation of disasters.
  • Optical fiber composite low-voltage cable that has the ability to transmit electrical energy and optical communication and can be combined with a fire prevention early warning system or monitoring equipment to achieve a fire warning effect, but this type of optical fiber composite low-voltage cable has poor fire performance, and it is difficult to ensure optical fiber after the fire Normal communication.
  • the purpose of the present disclosure is to provide an optical fiber composite fireproof cable and intelligent early warning communication equipment.
  • the cable has both optical communication capabilities and good high temperature resistance and combustion resistance. It can be combined with a fire prevention early warning system or monitoring equipment to provide timely fire protection Identify disasters and provide early warning to provide time guarantee for escape and disaster relief.
  • a first aspect of the embodiments of the present disclosure provides an optical fiber composite fireproof cable, including a communication optical unit, an early warning optical unit, and at least three power transmission units, a communication optical unit, an early warning optical unit, and power transmission
  • the unit is twisted to form a cable core;
  • the communication optical unit is composed of a loose tube, multiple communication optical fibers located in the loose tube, and a polyolefin sheath layer extruded on the outer surface of the loose tube.
  • the warning optical unit includes multiple temperature measuring fibers , Spiral steel tube, Kevlar fiber reinforced layer, stainless steel braided layer and Teflon sheath layer, temperature measuring fiber is placed inside the spiral steel tube, Kevlar fiber reinforced layer, stainless steel braided layer and Teflon sheath layer from inside
  • the power transmission unit includes a copper conductor, a mica tape layer coated on the outer surface of the copper conductor, and a polyolefin insulation layer.
  • the polyolefin insulation layer is coated on the outer surface of the mica tape layer; a glass fiber
  • the wrapping tape is wrapped around the outer surface of the cable core to form a glass fiber wrapping layer, a filler is provided between the glass fiber wrapping layer and the cable core, and a polyolefin refractory layer is coated on the glass fiber wrapping belt On the outer surface of the layer, an outer sheath is extruded over the outer surface of the polyolefin refractory layer.
  • the embodiments of the present disclosure provide a second possible implementation manner of the first aspect, where the copper conductor is a stranded structure.
  • the embodiments of the present disclosure provide a second possible implementation manner of the third aspect, and the copper conductor is the second annealed copper conductor.
  • the embodiments of the present disclosure provide a fourth possible implementation manner of the first aspect, where the temperature measuring optical fiber is a multimode optical fiber.
  • the embodiments of the present disclosure provide a fifth possible implementation manner of the first aspect, and the type of the temperature measuring optical fiber is A1a.
  • the polyolefin sheath layer is a ceramicized polyolefin sheath layer.
  • the polyolefin insulation layer is a ceramicized polyolefin insulation layer.
  • the embodiments of the present disclosure provide an eighth possible implementation manner of the first aspect, where the filler is an alkali-free glass fiber yarn filler.
  • the outer sheath is a thermoplastic low-smoke halogen-free flame-retardant polyolefin sheath.
  • the embodiments of the present disclosure provide a tenth possible implementation manner of the first aspect, the inner surface of the outer sheath is provided with protrusions, the outer surface of the polyolefin refractory layer is correspondingly provided with grooves, and the protrusions are embedded in the grooves Inside,
  • the protrusions include a plurality of protrusions arranged along the circumferential direction of the inner surface of the outer sheath; the grooves correspond to A plurality is provided, and the number of the plurality of grooves is the same as the number of the plurality of protrusions (701).
  • the embodiments of the present disclosure provide a twelfth possible implementation manner of the first aspect, the cross-sectional shape of the protrusion is semicircular, and the cross-sectional shape of the groove is semicircular.
  • a second aspect of an embodiment of the present disclosure provides an intelligent early warning communication device, including a fire prevention early warning system or monitoring device, and any one of the above-mentioned optical fiber composite fire prevention cables.
  • the optical fiber composite fire prevention cable is used to transmit the fire early warning system or monitoring equipment Warning information and real-time monitoring information.
  • the optical cable composite fireproof cable is a rated voltage 0.6 / 1kV optical fiber composite fireproof cable.
  • the communication optical unit adopts a loose tube structure, and a ceramic polyolefin sheath layer is extruded on the outer surface. After the flame is burned, the polyolefin sheath layer will crust and absorb heat. And prevent the flame from burning inwards; in addition, the copper conductor is wrapped around the mica tape layer with excellent high temperature resistance and combustion resistance, and the cable core is also designed with a double-layer refractory structure of glass fiber cladding layer and polyolefin refractory layer.
  • the sheath is made of low-smoke halogen-free flame-retardant polyolefin sheath material.
  • a fire-resistant alkali-free glass fiber yarn is set between the fiberglass cladding layer and the cable core for filling, whether it is the overall resistance of the cable or the local communication optical unit.
  • the fire performance is very good. Even if the fiber is burned at high temperature, the attenuation of the fiber is relatively small, and the fiber communication can be maintained normally when the fire occurs.
  • the warning light unit adopts A1a type multimode optical fiber with high temperature resistance, which is wrapped with spiral steel pipe, Kevlar fiber reinforced layer, stainless steel braided layer and Teflon sheath layer.
  • the optical unit has a compact structure, high compressive and shear strength, can protect the temperature measuring fiber well, and has good heat resistance.
  • the long-term use temperature range reaches -60 °C ⁇ 150 °C, the maximum use temperature can reach 200 °C;
  • the jacket The rapid thermal conductivity of Teflon material can ensure the sensitivity of the composite cable to fire warning.
  • the composite cable adopting the early warning light unit can realize the temperature monitoring of the entire line of the composite cable by combining with the fire prevention early warning system or monitoring equipment under normal working conditions, and find the disaster situation and early warning in the early stage of the fire to provide time guarantee for escape and disaster relief .
  • the inner surface of the outer sheath has several protrusions along the circumferential direction, and the protrusions are embedded in the grooves of the polyolefin refractory layer, which improves the combination of the outer sheath and the polyolefin refractory layer Strength and stability, avoiding the situation of delamination or axial deviation between the cable layers when used in cutting, winding or dragging, greatly improving the service life and structural reliability of the cable, and having good practical value And promote value.
  • FIG. 1 is a schematic structural diagram of an optical fiber composite fireproof cable according to an embodiment of the present disclosure
  • FIG. 2 is a partial structural schematic diagram of a communication optical unit in an optical fiber composite fire-resistant cable of an embodiment of the present disclosure
  • FIG. 3 is a partial structural diagram of an early warning light unit in an optical fiber composite fireproof cable according to an embodiment of the present disclosure.
  • Icons 1. Communication optical unit; 101, loose tube; 102, communication fiber; 103, polyolefin sheath; 2. early warning light unit; 201, temperature measuring fiber; 202, spiral steel tube; 203, Kevlar fiber Reinforcement layer; 204, stainless steel braided layer; 205, Teflon sheath layer; 3. Power transmission unit; 301, copper conductor; 302, mica tape layer; 303, polyolefin insulation layer; 4, glass fiber cladding layer; 5. Filler; 6. Polyolefin refractory layer; 601, groove; 7. Outer sheath; 701, protrusion.
  • This embodiment provides an optical fiber composite fireproof cable. As shown in FIG. 1, it includes a communication light unit 1, an early warning light unit 2 and three power transmission units 3, a communication light unit 1, an early warning light unit 2 and a power transmission unit 3 Stranded to form a cable core.
  • the communication optical unit 1 includes a loose tube 101, a plurality of communication optical fibers 102 located in the loose tube 101, and a polyolefin sheath 103 extruded on the outer surface of the loose tube 101.
  • the warning optical unit 2 includes a plurality of temperature measuring fibers 201, spiral steel pipe 202, Kevlar fiber reinforced layer 203, stainless steel braided layer 204 and Teflon sheath layer 205, temperature measuring optical fiber 201 is placed inside the spiral steel pipe 202, Kevlar fiber reinforced layer 203, stainless steel braided layer 204 The Teflon sheath layer 205 is coated on the outer surface of the spiral steel pipe 202 from the inside to the outside.
  • the power transmission unit 3 includes a copper conductor 301, a mica tape layer 302 and a polyolefin insulation layer 303 coated on the outer surface of the copper conductor 301.
  • the polyolefin insulation layer 303 covers the outer surface of the mica tape layer 302.
  • a glass fiber tape is wrapped around the outer surface of the cable core to form a glass fiber tape layer 4, a filler 5 is provided between the glass fiber tape layer 4 and the cable core, and a polyolefin refractory layer 6 is coated on the glass fiber tape On the outer surface of layer 4, an outer sheath 7 is extruded over the outer surface of polyolefin refractory layer 6.
  • the communication optical unit 1 adopts a loose tube 101 structure, and a ceramic polyolefin sheath 103 is extruded on the outer surface, and the polyolefin sheath 103 will crust after flame combustion , Absorb heat and prevent the flame from burning inward.
  • the copper conductor 301 is wrapped around the mica tape layer 302 with excellent high temperature resistance and combustion resistance, and the cable core is also designed with a double-layer refractory structure of a glass fiber cladding layer 4 and a polyolefin refractory layer 6, an outer sheath 7 Low-smoke and halogen-free flame-retardant polyolefin sheath material is used.
  • a fire-resistant alkali-free glass fiber yarn is also placed between the glass fiber tape layer 4 and the cable core for filling, whether it is the overall resistance of the cable or the communication optical unit 1
  • the fire performance is very good. Even if the fiber is burned at high temperature, the attenuation of the fiber is relatively small, and the fiber communication can be maintained normally when the fire occurs.
  • the copper conductor 301 has a twisted structure.
  • the copper conductor 301 is a second type of annealed copper conductor, which can be manufactured by a regular twisted structure.
  • the temperature measuring fiber 201 is a multimode fiber.
  • the type of the temperature measuring optical fiber 201 is A1a.
  • the polyolefin sheath layer 103 is a ceramicized polyolefin sheath layer.
  • the polyolefin insulation layer 303 is a ceramicized polyolefin insulation layer.
  • the filler 5 is an alkali-free fiberglass filler.
  • the non-alkali fiberglass material has better fire resistance, and the use of non-alkali fiberglass filler can further improve the flame retardant and fireproof performance of the cable core.
  • the warning light unit 2 adopts A1a type multimode optical fiber with high temperature resistance, which is wrapped with spiral steel pipe 202, Kevlar fiber reinforced layer 203, stainless steel braided layer 204 and Teflon sheath 205, the warning light unit 2 has a compact structure, high compressive and shear strength, can well protect the temperature measuring optical fiber 201, and has good heat resistance, long-term use temperature range reaches -60 °C ⁇ 150 °C, the maximum use temperature can reach 200 °C, the fast thermal conductivity of the Teflon material in the outer sheath 7 can ensure the sensitivity of the composite cable to the fire warning; the composite cable using the warning optical unit 2 under normal working conditions, through the fire warning system or monitoring equipment phase Combined, it can realize the temperature monitoring of the entire line of the composite cable, find the disaster situation and early warning in the early stage of the fire, and provide time guarantee for escape and disaster relief.
  • An embodiment of the present disclosure provides an optical fiber composite fireproof cable. As shown in FIG. 1, it includes a communication optical unit 1, an early warning optical unit 2, and three power transmission units 3, a communication optical unit 1, an early warning optical unit 2, and power transmission The unit 3 is twisted to form a cable core.
  • the communication optical unit 1 includes a loose tube 101, a plurality of communication optical fibers 102 located in the loose tube 101, and a polyolefin sheath 103 extruded on the outer surface of the loose tube 101.
  • the warning optical unit 2 includes a plurality of temperature measuring fibers 201, spiral steel pipe 202, Kevlar fiber reinforced layer 203, stainless steel braided layer 204 and Teflon sheath layer 205, temperature measuring fiber 201 is placed inside the spiral steel pipe 202, Kevlar fiber reinforced layer 203, stainless steel braided layer 204 and the Teflon sheath layer 205 are coated on the outer surface of the spiral steel pipe 202 from the inside to the outside.
  • the power transmission unit 3 includes a copper conductor 301, a mica tape layer 302 and a polyolefin insulation layer 303 coated on the outer surface of the copper conductor 301
  • the polyolefin insulation layer 303 is coated on the outer surface of the mica tape layer 302.
  • a glass fiber tape is wrapped around the outer surface of the cable core to form a glass fiber tape layer 4, a filler 5 is provided between the glass fiber tape layer 4 and the cable core, and a polyolefin refractory layer 6 is coated on the glass fiber
  • the outer surface of the tape layer 4 and an outer sheath 7 are extruded over the outer surface of the polyolefin refractory layer 6.
  • the outer sheath 7 is a thermoplastic low-smoke halogen-free flame-retardant polyolefin sheath.
  • the inner surface of the outer sheath 7 is provided with protrusions 701
  • the outer surface of the polyolefin refractory layer 6 is correspondingly provided with grooves 601
  • the protrusions 701 are embedded in the grooves 601.
  • connection stability between the outer sheath 7 and the polyolefin refractory layer 6 can be improved to avoid displacement or slippage between the two.
  • the protrusions 701 include a plurality of protrusions 701 arranged along the circumferential direction of the inner surface of the outer sheath 7, the grooves 601 are correspondingly provided in a plurality, the number of the plurality of grooves 601 is more than The number of protrusions 701 is the same.
  • the inner surface of the outer sheath 7 has eight protrusions 701 in the circumferential direction.
  • the protrusions 701 are embedded in the grooves 601 of the polyolefin refractory layer 6 to withstand external forces such as knocking and vibration Under the action, the outer sheath 7 and the polyolefin refractory layer 6 can maintain a stable connection relationship.
  • the cross-sectional shape of the protrusion 701 is semicircular
  • the cross-sectional shape of the groove 601 is semicircular.
  • the cross-sectional shapes of the protrusion 701 and the groove 601 match each other, and the surface where the two cooperate with each other is an arc surface, which makes the cooperation relationship between the enclosures more tight and stable.
  • the inner surface of the outer sheath 7 has several protrusions 701 along the circumferential direction, and the 701 protrusions are embedded in the grooves 601 of the polyolefin refractory layer 6 to improve the outer sheath 7 and polyolefin
  • the combined strength and stability of the refractory layer 6 avoids the occurrence of delamination or axial deviation between the cable layers when used in cutting, winding or dragging situations, greatly improving the service life and structural reliability of the cable. Very good practical value and promotion value.
  • the flame retardant and fireproof performance of the cable as a whole or the local light unit are very good, and can meet three assessments: 950 °C 3h does not break down under the flame; 650 °C 30min after 15min water spray It can withstand 15 minutes of knocking vibration without destruction under 950 °C flame; the composite cable burns in 950 °C flame for 90min; the optical line remains intact; therefore, it can still ensure the signal transmission function of the optical fiber when fire occurs, and the fire warning system Or the combination of monitoring equipment can realize the temperature monitoring of the entire line of the composite cable and find the disaster situation and early warning in the early stage of the fire, providing time guarantee for escape and disaster relief.
  • An embodiment of the present disclosure provides an intelligent early warning communication device, including a fire prevention early warning system or monitoring equipment, and the optical fiber composite fire prevention cable as described in any one of the above, the optical fiber composite fire prevention cable is used to transmit the early warning issued by the fire prevention early warning system or monitoring equipment Information and real-time monitoring information.
  • the optical cable composite fireproof cable is a fiber optic composite fireproof cable with a rated voltage of 0.6 / 1kV.
  • the intelligent early warning communication equipment provided by the embodiments of the present disclosure can realize the temperature monitoring of the entire line of the composite cable through the combination of the optical fiber composite fire protection cable and the fire prevention early warning system or monitoring equipment, and can find the disaster situation and early warning in the early stage of the fire, which is for escape and Disaster relief provides time guarantee.
  • the present disclosure provides an optical fiber composite fireproof cable and intelligent early warning communication equipment. Both the cable as a whole and the local flame retardant and fireproof performance of the optical transmission unit are very good, and the optical fiber attenuation is relatively small even in the case of high temperature combustion.
  • the optical communication capability and good high temperature resistance and combustion resistance can be combined with the fire prevention early warning system or monitoring equipment to detect the disaster situation and early warning in the early stage of the fire to provide time guarantee for escape and disaster relief.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Communication Cables (AREA)
  • Insulated Conductors (AREA)

Abstract

一种光纤复合防火电缆以及智能预警通讯设备，涉及光通信传输技术领域，兼具有光通信能力和良好的耐高温、耐燃烧性能，能够结合防火预警系统或监测设备，在火灾发生初期及时发现灾情并预警，为逃生和救灾提供时间保障。光纤复合防火电缆包括一个通讯光单元（1）、一个预警光单元（2）和至少三个电力传输单元（3），通讯光单元（1）、预警光单元（2）和电力传输单元（3）绞合形成缆芯；通讯光单元（1）由松套管（101）、位于松套管（101）内的多根通讯光纤（102）和挤包于松套管（101）外表面的聚烯烃护套层（103）组成，预警光单元（2）包括多根测温光纤（201）、螺旋钢管（202）、凯夫拉纤维加强层（203）、不锈钢编织层（204）和铁氟龙护套层（205），电力传输单元（3）包括铜导体（301）、包覆于铜导体（301）外表面的云母带层（302）和聚烯烃绝缘层（303）；玻璃纤维包带层（4）与缆芯之间设置有填充物（5）。

Description

光纤复合防火电缆以及智能预警通讯设备
相关申请的交叉引用
本申请要求于2018年11月9日提交中国专利局的申请号为201821840833.9、名称为“智能预警通讯用防火低压电缆”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及光通信传输技术领域，尤其涉及一种光纤复合防火电缆以及智能预警通讯设备。
背景技术
随着我国社会经济的高速发展，大型建筑、地铁、隧道、核电站等重要工程设施及大型超市、会展中心等人员密集的地方越来越多。与此同时，消防安全观念成为人们关注的重点，因此，对电线电缆的阻燃和防火要求也越来越高，与之相应的，电线电缆的防火性能也得到了极大的重视。
市场上的防火电缆经过不断的发展，虽然逐渐提高了电线电缆的防火能力，但是现有技术中的电线电缆基本都是被动防火，即当火灾发生后，防火能力较强的电线电缆能够维持提供一定时间的供电，而不至于立即丧失功能。但是，现有技术中的电线电缆都不能与防火预警或监测等设备配合在火险发生初期及时进行预测或探测，进而有效避免火灾的发生或灾情的加重。
具有输送电能和光通信能力并且能够结合防火预警系统或监测设备起到火灾预警效果的光纤复合低压电缆，但是这种光纤复合低压电缆的防火性能不佳，在火灾发生后光纤复合低压电缆难以保证光纤通信的正常进行。
发明内容
本公开的目的是提供一种光纤复合防火电缆以及智能预警通讯设备，该电缆兼具有光通信能力和良好的耐高温、耐燃烧性能，能够结合防火预警系统或监测设备，在火灾发生初期及时发现灾情并预警，为逃生和救灾提供时间保障。
为达到上述目的，本公开实施例的第一方面，提供一种光纤复合防火电缆，包括一个通讯光单元、一个预警光单元和至少三个电力传输单元，通讯光单元、预警光单元和电力 传输单元绞合形成缆芯；通讯光单元由松套管、位于松套管内的多根通讯光纤和挤包于松套管外表面的聚烯烃护套层组成，预警光单元包括多根测温光纤、螺旋钢管、凯夫拉纤维加强层、不锈钢编织层和铁氟龙护套层，测温光纤置于螺旋钢管内部，凯夫拉纤维加强层、不锈钢编织层和铁氟龙护套层由内而外包覆于螺旋钢管外表面，电力传输单元包括铜导体、包覆于铜导体外表面的云母带层和聚烯烃绝缘层，聚烯烃绝缘层包覆于云母带层外表面；一玻璃纤维包带绕包于缆芯外表面形成玻璃纤维包带层，玻璃纤维包带层与缆芯之间设置有填充物，一聚烯烃耐火层包覆于玻璃纤维包带层外表面，一外护套挤包于聚烯烃耐火层外表面。
结合第一方面，本公开实施例提供了第一方面的第二种可能的实施方式，铜导体为绞合结构。结合第一方面，本公开实施例提供了第三方面的第二种可能的实施方式，铜导体为第2种退火铜导体。
结合第一方面，本公开实施例提供了第一方面的第四种可能的实施方式，测温光纤为多模光纤。
结合第一方面，本公开实施例提供了第一方面的第五种可能的实施方式，测温光纤的类型为A1a类。
结合第一方面，本公开实施例提供了第一方面的第六种可能的实施方式，聚烯烃护套层为陶瓷化聚烯烃护套层。
结合第一方面，本公开实施例提供了第一方面的第七种可能的实施方式，聚烯烃绝缘层为陶瓷化聚烯烃绝缘层。
结合第一方面，本公开实施例提供了第一方面的第八种可能的实施方式，所述填充物为无碱玻纤纱填充物。
结合第一方面，本公开实施例提供了第一方面的第九种可能的实施方式，外护套为热塑性低烟无卤阻燃聚烯烃护套。
结合第一方面，本公开实施例提供了第一方面的第十种可能的实施方式，外护套内表面设置有突起部，聚烯烃耐火层外表面对应设置有凹槽，突起部嵌入凹槽内，
结合第一方面，本公开实施例提供了第一方面的第十一种可能的实施方式，突起部包括有多个，多个突起部沿外护套内表面的周向排列设置；凹槽对应设置有多个，多个凹槽的设置数量与多个突起部(701)的设置数量相同。
结合第一方面，本公开实施例提供了第一方面的第十二种可能的实施方式，突起部的截面形状为半圆形，凹槽的截面形状为半圆形。
本公开实施例的第二方面，提供一种智能预警通讯设备，包括防火预警系统或监测设备，以及上述任一项的光纤复合防火电缆，光纤复合防火电缆用于传输防火预警系 统或监测设备发出的预警信息和实时监测信息。
结合第二方面，本公开实施例提供了第二方面的第二种可能的实施方式，光缆复合防火电缆为额定电压0.6/1kV光纤复合防火电缆。
由于上述技术方案的运用，本公开实施例至少带来了以下有益效果：
本公开实施例的光纤复合防火电缆，其通讯光单元采用松套管结构，并在外表面挤包有陶瓷化聚烯烃护套层，在火焰燃烧后聚烯烃护套层会发生结壳，吸收热量并阻止火焰向内燃烧；此外，铜导体外绕包耐高温性能和耐燃烧性能优良的云母带层，缆芯外也设计了玻璃纤维包带层和聚烯烃耐火层的双层耐火结构，外护套采用低烟无卤阻燃聚烯烃护套料，另外在玻璃纤维包带层与缆芯之间还设置了耐火无碱玻纤纱进行填充，无论是电缆整体还是通讯光单元局部的阻燃防火性能都很良好，即使在高温燃烧的情况下光纤衰减也比较小，在火灾发生时仍能维持光纤通信的正常进行。
本公开实施例的光纤复合防火电缆，其预警光单元采用具有耐高温特性的A1a类多模光纤，外包螺旋钢管、凯夫拉纤维加强层、不锈钢编织层和铁氟龙护套层，该预警光单元结构紧凑、抗压抗剪强度高，能够很好的保护测温光纤，同时耐热性能好，长期使用温度范围达到-60℃～150℃，最高使用温度可以达到200℃；此外护套铁氟龙材料的快速导热特性能够保证复合电缆对火灾预警的灵敏性。采用该预警光单元的复合电缆在正常工况下，通过与防火预警系统或监测设备相结合，可实现复合电缆全线温度监测，在火灾发生初期及时发现灾情并预警，为逃生和救灾提供时间保障。
本公开实施例的光纤复合防火电缆，其外护套内表面沿周向具有若干个突起部，此突起部嵌入聚烯烃耐火层的凹槽内，提高了外护套和聚烯烃耐火层的结合强度和稳定性，避免了在裁剪、缠绕或拖拽场合使用的时候，电缆层间出现分层或轴向偏移的情况，大大提高了电缆使用寿命和结构可靠性，具有很好的实用价值和推广价值。
本公开的其他特征和优点将在随后的说明书中阐述，或者，部分特征和优点可以从说明书推知或毫无疑义地确定，或者通过实施本公开的上述技术即可得知。
为使本公开的上述目的、特征和优点能更明显易懂，下文特举较佳实施例，并配合所附附图，作详细说明如下。
附图说明
为了更清楚地说明本公开具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例的光纤复合防火电缆结构示意图；
图2为本公开实施例的光纤复合防火电缆中通讯光单元的局部结构示意图；
图3为本公开实施例的光纤复合防火电缆中预警光单元的局部结构示意图。
图标：1、通讯光单元；101、松套管；102、通讯光纤；103、聚烯烃护套层；2、预警光单元；201、测温光纤；202、螺旋钢管；203、凯夫拉纤维加强层；204、不锈钢编织层；205、铁氟龙护套层；3、电力传输单元；301、铜导体；302、云母带层；303、聚烯烃绝缘层；4、玻璃纤维包带层；5、填充物；6、聚烯烃耐火层；601、凹槽；7、外护套；701、突起部。
具体实施方式
以下对在附图中提供的本公开的实施例的详细描述并非旨在限制要求保护的本公开的范围，而是仅仅表示本公开的选定实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例的”、“具体示例”、或“一些示例”、“例如”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合附图对本公开的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。通常在此处附图中描述和示出的本公开实施例的组件可以以各种不同的配置来布置和设计。
实施例1：
本实施例提供一种光纤复合防火电缆，如图1所示，包括一个通讯光单元1、一个预警光单元2和三个电力传输单元3，通讯光单元1、预警光单元2和电力传输单元3绞合形成缆芯。
通讯光单元1包括松套管101、位于松套管101内的多根通讯光纤102和挤包于松套管101外表面的聚烯烃护套层103，预警光单元2包括多根测温光纤201、螺旋钢管202、凯夫拉纤维加强层203、不锈钢编织层204和铁氟龙护套层205，测温光纤201置于螺旋钢管202内部，凯夫拉纤维加强层203、不锈钢编织层204和铁氟龙护套层205由内而外包覆于 螺旋钢管202外表面，电力传输单元3包括铜导体301、包覆于铜导体301外表面的云母带层302和聚烯烃绝缘层303，聚烯烃绝缘层303包覆于云母带层302外表面。
一玻璃纤维包带绕包于缆芯外表面形成玻璃纤维包带层4，玻璃纤维包带层4与缆芯之间设置有填充物5，一聚烯烃耐火层6包覆于玻璃纤维包带层4外表面，一外护套7挤包于聚烯烃耐火层6外表面。
本公开实施例的光纤复合防火电缆，通讯光单元1采用松套管101结构，并在外表面挤包有陶瓷化聚烯烃护套层103，在火焰燃烧后聚烯烃护套层103会发生结壳，吸收热量并阻止火焰向内燃烧。此外，铜导体301外绕包耐高温性能和耐燃烧性能优良的云母带层302，缆芯外也设计了玻璃纤维包带层4和聚烯烃耐火层6的双层耐火结构，外护套7采用低烟无卤阻燃聚烯烃护套料，另外在玻璃纤维包带层4与缆芯之间还设置了耐火无碱玻纤纱进行填充，无论是电缆整体还是通讯光单元1局部的阻燃防火性能都很良好，即使在高温燃烧的情况下光纤衰减也比较小，在火灾发生时仍能维持光纤通信的正常进行。
在此基础上，如图1所示，本公开实施例的光纤复合防火电缆中，铜导体301为绞合结构。
在此基础上，铜导体301为第2种退火铜导体，其中，可采用正规绞合结构的方式制作。
在此基础上，测温光纤201为多模光纤。
在此基础上，测温光纤201的类型为A1a类。
在此基础上，聚烯烃护套层103为陶瓷化聚烯烃护套层。
在此基础上，聚烯烃绝缘层303为陶瓷化聚烯烃绝缘层。
在此基础上，如图1所示，填充物5为无碱玻纤纱填充物。
无碱玻纤纱材质的耐火性能较好，采用无碱玻纤纱填充物能够进一步提高缆芯的阻燃防火性能。
本公开实施例的光纤复合防火电缆，预警光单元2采用具有耐高温特性的A1a类多模光纤，外包螺旋钢管202、凯夫拉纤维加强层203、不锈钢编织层204和铁氟龙护套层205，预警光单元2结构紧凑、抗压抗剪强度高，能够很好的保护测温光纤201，同时耐热性能好，长期使用温度范围达到-60℃～150℃，最高使用温度可以达到200℃，外护套7的铁氟龙材料的快速导热特性能够保证复合电缆对火灾预警的灵敏性；采用该预警光单元2的复合电缆在正常工况下，通过与防火预警系统或监测设备相结合，可实现复合电缆全线温度监测，在火灾发生初期及时发现灾情并预警，为逃生和救灾提供时间保障。
实施例2：
本公开实施例提供一种光纤复合防火电缆，如图1所示，包括一个通讯光单元1、一个 预警光单元2和三个电力传输单元3，通讯光单元1、预警光单元2和电力传输单元3绞合形成缆芯。
通讯光单元1包括松套管101、位于松套管101内的多根通讯光纤102和挤包于松套管101外表面的聚烯烃护套层103，预警光单元2包括多根测温光纤201、螺旋钢管202、凯夫拉纤维加强层203、不锈钢编织层204和铁氟龙护套层205组成，测温光纤201置于螺旋钢管202内部，凯夫拉纤维加强层203、不锈钢编织层204和铁氟龙护套层205由内而外包覆于螺旋钢管202外表面，电力传输单元3包括铜导体301、包覆于铜导体301外表面的云母带层302和聚烯烃绝缘层303，聚烯烃绝缘层303包覆于云母带层302外表面。
一玻璃纤维包带绕包于缆芯外表面形成玻璃纤维包带层4，所述玻璃纤维包带层4与缆芯之间设置有填充物5，一聚烯烃耐火层6包覆于玻璃纤维包带层4外表面，一外护套7挤包于聚烯烃耐火层6外表面。
在此基础上，如图1所示，外护套7为热塑性低烟无卤阻燃聚烯烃护套。
在此基础上，外护套7内表面设置有突起部701，聚烯烃耐火层6外表面对应设置有凹槽601，突起部701嵌入凹槽601内。
这样一来，能够提高外护套7与聚烯烃耐火层6之间的连接稳定性，避免二者之间发生位移或滑移。
在此基础上，突起部701包括有多个，多个突起部701沿外护套7内表面的周向排列设置，凹槽601对应设置有多个，多个凹槽601的设置数量与多个突起部701的设置数量相同。
示例的，如图1所示，外护套7内表面沿周向具有八个突起部701，此突起部701嵌入聚烯烃耐火层6的凹槽601内，从而在承受敲击、振动等外力作用下，外护套7与聚烯烃耐火层6之间能够保持稳定的连接关系。
可选的，突起部701的截面形状为半圆形，所述凹槽601的截面形状为半圆形。突起部701与凹槽601的截面形状相互匹配，且二者相互配合的表面为弧面，使得围着之间的配合关系更为紧密和稳定。
本公开实施例的光纤复合防火电缆，外护套7内表面沿周向具有若干个突起部701，701突起部嵌入聚烯烃耐火层6的凹槽601内，提高了外护套7和聚烯烃耐火层6的结合强度和稳定性，避免了在裁剪、缠绕或拖拽场合使用的时候，电缆层间出现分层或轴向偏移的情况，大大提高了电缆使用寿命和结构可靠性，具有很好的实用价值和推广价值。采用上述光纤复合防火电缆时，其无论是电缆整体还是光单元局部的阻燃防火性能都很良好，可以满足三项考核：950℃3h火焰下不击穿；650℃30min后承受15min的水喷淋，950℃火焰下承受15min的敲击振动而不破坏；复合缆在950℃火焰中燃烧90min；光线路保持完整； 因此其在火灾发生时仍能保证光纤的信号传输功能，与防火预警系统或监测设备相结合后可实现复合电缆全线温度监测并在火灾发生初期及时发现灾情并预警，为逃生和救灾提供时间保障。
实施例3：
本公开实施例提供一种智能预警通讯设备，包括防火预警系统或监测设备，以及如上述任一项所述的光纤复合防火电缆，光纤复合防火电缆用于传输防火预警系统或监测设备发出的预警信息和实时监测信息。
在此基础上，可选的，光缆复合防火电缆为额定电压0.6/1kV光纤复合防火电缆。
本公开实施例提供的智能预警通讯设备，通过光纤复合防火电缆与防火预警系统或监测设备相结合后，可实现复合电缆全线温度监测，并可在火灾发生初期及时发现灾情并预警，为逃生和救灾提供时间保障。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。
工业实用性
本公开提供了一种光纤复合防火电缆以及智能预警通讯设备，无论是电缆整体还是光传输单元局部的阻燃防火性能都很良好，即使在高温燃烧的情况下光纤衰减也比较小，兼具有光通信能力和良好的耐高温、耐燃烧性能，能够结合防火预警系统或监测设备，在火灾发生初期及时发现灾情并预警，为逃生和救灾提供时间保障。

Claims (14)

  1. 一种光纤复合防火电缆，其特征在于：包括一个通讯光单元(1)、一个预警光单元(2)和至少三个电力传输单元(3)，所述通讯光单元(1)、所述预警光单元(2)和所述电力传输单元(3)绞合形成缆芯；
    所述通讯光单元(1)包括松套管(101)、位于松套管(101)内的多根通讯光纤(102)和挤包于松套管(101)外表面的聚烯烃护套层(103)，所述预警光单元(2)包括多根测温光纤(201)、螺旋钢管(202)、凯夫拉纤维加强层(203)、不锈钢编织层(204)和铁氟龙护套层(205)，所述测温光纤(201)置于螺旋钢管(202)内部，所述凯夫拉纤维加强层(203)、不锈钢编织层(204)和铁氟龙护套层(205)由内而外覆于所述螺旋钢管(202)外表面，所述电力传输单元(3)包括铜导体(301)、包覆于所述铜导体(301)外表面的云母带层(302)和聚烯烃绝缘层(303)，所述聚烯烃绝缘层(303)包覆于所述云母带层(302)外表面；
    一玻璃纤维包带绕包于缆芯外表面形成玻璃纤维包带层(4)，所述玻璃纤维包带层(4)与缆芯之间设置有填充物(5)，一聚烯烃耐火层(6)包覆于所述玻璃纤维包带层(4)外表面，一外护套(7)挤包于所述聚烯烃耐火层(6)外表面。
  2. 根据权利要求1所述的光纤复合防火电缆，其特征在于：所述铜导体(301)为绞合结构。
  3. 根据权利要求2所述的光纤复合防火电缆，其特征在于：所述铜导体(301)为第2种退火铜导体。
  4. 根据权利要求1-3任一项所述的光纤复合防火电缆，其特征在于：所述测温光纤(201)为多模光纤。
  5. 根据权利要求4所述的光纤复合防火电缆，其特征在于：所述测温光纤(201)的类型为A1a类。
  6. 根据权利要求1-5任一项所述的光纤复合防火电缆，其特征在于：所述聚烯烃护套层(103)为陶瓷化聚烯烃护套层。
  7. 根据权利要求1-6任一项所述的光纤复合防火电缆，其特征在于：所述聚烯烃绝缘层(303)为陶瓷化聚烯烃绝缘层。
  8. 根据权利要求1-7任一项所述的光纤复合防火电缆，其特征在于：所述填充物(5)为无碱玻纤纱填充物。
  9. 根据权利要求1-8任一项所述的光纤复合防火电缆，其特征在于：所述外护套(7)为热塑性低烟无卤阻燃聚烯烃护套。
  10. 根据权利要求1-9任一项所述的光纤复合防火电缆，其特征在于：所述外护套(7)内表面设置有突起部(701)，所述聚烯烃耐火层(6)外表面对应设置有凹槽(601)，所述突起部(701)嵌入所述凹槽(601)内。
  11. 根据权利要求10所述的光纤复合防火电缆，其特征在于：所述突起部(701)包括有多个，多个所述突起部(701)沿所述外护套(7)内表面的周向排列设置；所述凹槽(601)对应设置有多个，多个所述凹槽(601)的设置数量与多个所述突起部(701)的设置数量相同。
  12. 根据权利要求10或11所述的光纤复合防火电缆，其特征在于：所述突起部(701)的截面形状为半圆形，所述凹槽(601)的截面形状为半圆形。
  13. 一种智能预警通讯设备，其特征在于，包括防火预警系统或监测设备，以及如权利要求1-12任一项所述的光纤复合防火电缆，所述光纤复合防火电缆用于传输所述防火预警系统或监测设备发出的预警信息和实时监测信息。
  14. 根据权利要求13所述的智能预警通讯设备，其特征在于，所述光缆复合防火电缆为额定电压0.6/1kV光纤复合防火电缆。
PCT/CN2018/116021 2018-11-09 2018-11-16 光纤复合防火电缆以及智能预警通讯设备 WO2020093440A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201821840833.9 2018-11-09
CN201821840833.9U CN209045218U (zh) 2018-11-09 2018-11-09 智能预警通讯用防火低压电缆

Publications (1)

Publication Number Publication Date
WO2020093440A1 true WO2020093440A1 (zh) 2020-05-14

Family

ID=66344392

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/116021 WO2020093440A1 (zh) 2018-11-09 2018-11-16 光纤复合防火电缆以及智能预警通讯设备

Country Status (3)

Country Link
CN (1) CN209045218U (zh)
AU (1) AU2019100250A4 (zh)
WO (1) WO2020093440A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113488279A (zh) * 2021-07-19 2021-10-08 安徽徽宁电器仪表集团有限公司 一种环保型控制电缆
CN115881359A (zh) * 2022-11-29 2023-03-31 人民电缆集团有限公司 一种环保型阻燃防火智能电缆
CN116246834A (zh) * 2023-03-29 2023-06-09 宏安集团有限公司 一种电力通信用蝶形引入光电复合缆

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111640530B (zh) * 2020-06-01 2022-10-25 远东电缆有限公司 一种柔性吊装电缆及其制备方法
CN112900245B (zh) * 2021-03-31 2024-06-04 长安大学 一种用于斜拉桥拉索的防火装置及其安装方法
CN114898933B (zh) * 2021-12-15 2024-02-23 浙江兆龙互连科技股份有限公司 一种复合型双层防火阻燃电缆及其制备方法
CN115116667B (zh) * 2022-06-30 2024-07-12 齐鲁电缆有限公司 一种信号传输监控数据检测一体型动力电缆
CN117410023B (zh) * 2023-11-09 2024-04-26 济南马世基智能环保科技有限公司 一种防爆电缆

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030178220A1 (en) * 2002-03-21 2003-09-25 Alcatel Cable sheath including a halogen-free intumescent composition
CN201549269U (zh) * 2009-11-02 2010-08-11 中天科技海缆有限公司 多芯智能型多功能光纤复合特种电力电缆
CN104392799A (zh) * 2014-12-09 2015-03-04 上海快鹿电气技术开发有限公司 一种柔性矿物防火光电复合缆
CN204257261U (zh) * 2014-08-18 2015-04-08 特变电工股份有限公司 一种复合中压电缆
CN205542146U (zh) * 2016-04-18 2016-08-31 铭品电缆集团有限公司 一种复合式光电缆
CN206331802U (zh) * 2017-01-03 2017-07-14 四川自胜机电设备有限责任公司 一种玄武岩纤维制成的电缆外套

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030178220A1 (en) * 2002-03-21 2003-09-25 Alcatel Cable sheath including a halogen-free intumescent composition
CN201549269U (zh) * 2009-11-02 2010-08-11 中天科技海缆有限公司 多芯智能型多功能光纤复合特种电力电缆
CN204257261U (zh) * 2014-08-18 2015-04-08 特变电工股份有限公司 一种复合中压电缆
CN104392799A (zh) * 2014-12-09 2015-03-04 上海快鹿电气技术开发有限公司 一种柔性矿物防火光电复合缆
CN205542146U (zh) * 2016-04-18 2016-08-31 铭品电缆集团有限公司 一种复合式光电缆
CN206331802U (zh) * 2017-01-03 2017-07-14 四川自胜机电设备有限责任公司 一种玄武岩纤维制成的电缆外套

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113488279A (zh) * 2021-07-19 2021-10-08 安徽徽宁电器仪表集团有限公司 一种环保型控制电缆
CN115881359A (zh) * 2022-11-29 2023-03-31 人民电缆集团有限公司 一种环保型阻燃防火智能电缆
CN116246834A (zh) * 2023-03-29 2023-06-09 宏安集团有限公司 一种电力通信用蝶形引入光电复合缆
CN116246834B (zh) * 2023-03-29 2023-09-19 宏安集团有限公司 一种电力通信用蝶形引入光电复合缆

Also Published As

Publication number Publication date
CN209045218U (zh) 2019-06-28
AU2019100250A4 (en) 2019-05-09

Similar Documents

Publication Publication Date Title
WO2020093440A1 (zh) 光纤复合防火电缆以及智能预警通讯设备
CN202373359U (zh) 一种新型耐火阻燃型计算机电缆
CN212723479U (zh) 一种全干式非金属阻燃耐火光缆
CN203930159U (zh) 一种陶瓷纤维阻燃耐火层绞式光缆
CN204087886U (zh) 一种无卤低烟耐火铜包铝复合导体防鼠蚁电缆
CN104199156A (zh) 一种高性能阻燃耐火光缆
CN112908526B (zh) 一种环保型防火电缆
CN202693882U (zh) 非金属耐火光缆
CN109148028B (zh) 一种智能电缆
CN106024166A (zh) 柔性矿物绝缘防火电缆
CN210722558U (zh) 智能预警通讯用中压防火电缆
WO2020073761A1 (zh) 一种耐火光缆
CN208173287U (zh) 一种低烟无卤高温电缆
CN208752274U (zh) 一种耐火光缆
CN201975142U (zh) 智能电网用耐火复合电缆
CN209843282U (zh) 一种陶瓷化阻燃光电缆
CN203787127U (zh) 一种环保型本安型仪表电缆
CN208984842U (zh) 一种非金属耐火光缆
CN105702362A (zh) 一种环保型铝合金耐火电缆
CN206432060U (zh) 硅胶绝缘防火线缆
CN211087977U (zh) 耐高温耐火中压电力电缆
CN204143899U (zh) 一种无机复合绝缘软电缆
CN219831469U (zh) 一种非金属阻燃耐火光缆
CN205028676U (zh) 一种防火预分支电缆
CN214377771U (zh) 66kV-500kV低烟无卤B1级阻燃电力电缆

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18939487

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18939487

Country of ref document: EP

Kind code of ref document: A1