WO2020119443A1 - Fire-resistant power cable for full-line temperature measurement and alarm sounding - Google Patents

Fire-resistant power cable for full-line temperature measurement and alarm sounding Download PDF

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Publication number
WO2020119443A1
WO2020119443A1 PCT/CN2019/120888 CN2019120888W WO2020119443A1 WO 2020119443 A1 WO2020119443 A1 WO 2020119443A1 CN 2019120888 W CN2019120888 W CN 2019120888W WO 2020119443 A1 WO2020119443 A1 WO 2020119443A1
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Prior art keywords
fire
line
monitoring
resistant
space
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PCT/CN2019/120888
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French (fr)
Chinese (zh)
Inventor
魏辰冰
张锐
代子阳
刘焱鑫
刘秋生
闫俊桥
刘坤瑜
王思元
卢柏会
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江苏中利集团股份有限公司
宁夏中盛电缆技术有限公司
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Priority to DE212019000140.8U priority Critical patent/DE212019000140U1/en
Publication of WO2020119443A1 publication Critical patent/WO2020119443A1/en

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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
    • 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

Definitions

  • the utility model relates to a power cable, in particular to a fire-resistant power cable with full line temperature measurement and alarm, which belongs to the technical field of cable manufacturing.
  • Refractory cable refers to a cable that can keep safe operation for a certain period of time in the case of flame burning. When a fire occurs, it can ensure that the line is normally energized and transmits various control signals within a certain period of time. With the national emphasis on fire safety, the use and reliability of fire-resistant cables are extremely important. The early warning function before the fire also has a very important meaning. Early warning can effectively suppress the fire before the fire or buy more time for the evacuation and rescue of the people after the fire. In the prior art where refractory cables are required, to meet the alarm when a certain temperature is reached, an additional cable needs to be laid to connect the temperature sensor, and multiple temperature-sensitive originals need to be installed according to the actual site conditions. The current installation takes up more Space, and more cumbersome, and the current detection function can only monitor the temperature value of the space, the temperature abnormality caused by possible defects in the cable itself is difficult to be found.
  • the purpose of the utility model is to provide a refractory power cable with full line temperature measurement and alarm.
  • the cable combines the core structure of the full line alarm with the refractory cable.
  • the alarm core is used in different positions to achieve two different effects of monitoring and alarming.
  • a fire-resistant power cable with full-line temperature measurement and alarm comprising a plurality of (usually two) refractory cores, the refractory core is sheathed outside, formed between the plurality of refractory cores and the sheath layer
  • the second monitoring wire includes two second steel wires, and the second steel wire is covered with A second temperature-sensitive insulating material with a negative temperature coefficient, two second steel wires are twisted together; in the first space, the first monitoring wire is in contact with the refractory core, the first monitoring wire is There is a first insulating filler in the room; in the second space, the second monitoring wire is in contact with the sheath layer, and the
  • the refractory core includes a conductor, and outside the conductor are a mica tape layer and an insulating layer in this order.
  • the insulating layers of the refractory wire core are simultaneously extruded into one body, that is, the insulation of the two refractory wire cores is simultaneously extruded into a layer (integrated) structure.
  • an insulating framework is provided between the second monitoring wire and the second insulating filler.
  • the utility model can monitor the ambient temperature of the laying of the whole line, can monitor the temperature value of the cable surface, and alarm when the temperature exceeds the required value.
  • the utility model In order to meet the environment of fire-resistant cables and to alarm when a certain temperature is reached, the utility model only needs to lay a signal converter and a terminal box on the beginning and end of the cable on the basis of conventional installation, and the installation is very convenient.
  • Figure 1 is a schematic diagram of the utility model.
  • a refractory power cable with full-line temperature measurement and alarm includes two refractory cores, the outer side of the refractory core is a sheath layer 11, the refractory core includes a conductor 1, and the conductor 1
  • the outside is the mica tape layer 2 and the insulating layer 3 in this order.
  • the insulating layer 3 of the refractory wire core is simultaneously extruded into one body, that is, the two insulating layers 3 of the refractory wire core are simultaneously extruded into a layer (integrated) structure.
  • a first space and a second space are formed between the two refractory cores and the sheath layer 11.
  • a first monitoring wire is provided in the first space
  • a second monitoring wire is provided in the second space
  • the first monitoring wire includes two first steel wires 4
  • the first steel wire 4 is covered with A first temperature-sensitive insulating material 5 with a negative temperature coefficient, two first steel wires 4 are twisted together
  • the second monitoring wire includes two second steel wires 7, and the second steel wire 7 is coated with a negative temperature coefficient Of the second heat-sensitive insulating material 8, two second steel wires 7 are twisted together.
  • the resistance between the steel wires (wires) changes.
  • the terminal box emits a fire alarm signal (requires laying signal converters and terminal boxes at the beginning and end of the cable).
  • the first monitoring line detects the cable temperature
  • the second monitoring line detects the ambient temperature.
  • the first monitoring wire In the first space, the first monitoring wire is in contact with the core of the refractory wire, and there is a first insulating filler 6 between the first monitoring wire and the sheath layer 11.
  • the first monitoring line is in contact with the refractory core to achieve the function of monitoring and alarming the temperature of the refractory core of the cable.
  • the second monitoring wire is in contact with the sheath layer 11, and the second monitoring wire is separated from the refractory wire core by a second insulating filler 9.
  • the second monitoring wire is in contact with the sheath layer 11, and the other parts are separated from the refractory wire core by a thermal insulation material (second thermal insulation filler 9) to achieve the monitoring and alarm function for the surrounding environment.
  • a thermal insulation material second thermal insulation filler 9
  • an insulating framework 10 is provided between the second monitoring wire and the second insulating filler 9.

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  • Insulated Conductors (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

A fire-resistant power cable for a full-line temperature measurement and alarm sounding, comprising a fire-resistant line core and a sheath layer (11) at an outer part thereof, wherein first and second spaces are formed between the fire-resistant line core and the sheath layer (11); a first monitoring line and a second monitoring line are disposed in the first space and the second space respectively, the first monitoring line comprises two first steel wires (4), and first heat-sensitive insulating materials (5) wrap the outside of the first steel wires (4); the second monitoring line comprises two second steel wires (7), and second heat-sensitive insulating materials (8) wrap the outside of the second steel wires (7); in the first space, the first monitoring line is in contact with the fire-resistant line core, and there is a first thermal insulation filler (6) between the first monitoring line and the sheath layer (11); and in the second space, the second monitoring line is in contact with the sheath layer (11), and the second monitoring line and the fire-resistant line core are separated by means of a second thermal insulation filler (9). The fire-resistant power cable above may monitor the ambient temperature of the entire laid line and the temperature of the cable surface, and sound an alarm when the temperature is exceeded.

Description

一种全线路测温报警的耐火电力电缆Fire-resistant power cable for full-line temperature measurement and alarm 技术领域Technical field
本实用新型涉及一种电力电缆，具体是一种全线路测温报警的耐火电力电缆，属于电缆制造技术领域。The utility model relates to a power cable, in particular to a fire-resistant power cable with full line temperature measurement and alarm, which belongs to the technical field of cable manufacturing.
背景技术Background technique
耐火电缆是指在火焰燃烧情况下能够保持一定时间内安全运行的电缆，在火灾发生时保证线路在一定时间里正常通电、传输各种控制信号等。随着国家对消防安全的重视,耐火电缆的使用及可靠性极为重要。在火灾发生前的预警功能也有很重要的意义，预警可有效的在大火发生前将火灾抑制或在火灾发生后为人员疏散、救援争取更多时间。现有技术中需要耐火电缆的场合,若要满足达到一定温度时报警,需额外敷设一根电缆连接温度传感器使用,且需要根据实际现场情况安装多个感温原件，目前的安装占用较多的空间，而且比较繁琐，且目前的检测功能,仅可监测空间的温度值,电缆本身可能存在的缺陷造成的温度异常很难被发现。Refractory cable refers to a cable that can keep safe operation for a certain period of time in the case of flame burning. When a fire occurs, it can ensure that the line is normally energized and transmits various control signals within a certain period of time. With the national emphasis on fire safety, the use and reliability of fire-resistant cables are extremely important. The early warning function before the fire also has a very important meaning. Early warning can effectively suppress the fire before the fire or buy more time for the evacuation and rescue of the people after the fire. In the prior art where refractory cables are required, to meet the alarm when a certain temperature is reached, an additional cable needs to be laid to connect the temperature sensor, and multiple temperature-sensitive originals need to be installed according to the actual site conditions. The current installation takes up more Space, and more cumbersome, and the current detection function can only monitor the temperature value of the space, the temperature abnormality caused by possible defects in the cable itself is difficult to be found.
实用新型内容Utility model content
本实用新型的目的是提供一种全线路测温报警的耐火电力电缆，该电缆将全线路报警的线芯结构与耐火电缆相结合，不同位置使用报警线芯，达到两种不同效果的监测报警功能。The purpose of the utility model is to provide a refractory power cable with full line temperature measurement and alarm. The cable combines the core structure of the full line alarm with the refractory cable. The alarm core is used in different positions to achieve two different effects of monitoring and alarming. Features.
为了达到上述技术目的，本实用新型的技术方案是：In order to achieve the above technical purpose, the technical solution of the present utility model is:
一种全线路测温报警的耐火电力电缆，包括多个(常为两个)耐火线芯，所述耐火线芯外为护套层，所述多个耐火线芯与护套层之间形成有第一空间和第二空间；所述第一空间内设置有第一监测线，所述第二空间内设置有第二监测线，所述第一监测线包括两根第一钢丝，所述第一钢丝外包覆有负温度系数的第一热敏绝缘材料，两根第一钢丝绞合在一起；所述第二监测线包括两根第二钢丝，所述第二钢丝外包覆有负温度系数的第二热敏绝缘材料，两根第二钢丝绞合在一起；在第一空间内，所述第一监测线与耐火线芯接触，所述第 一监测线与护套层之间具有第一隔热填充物；在第二空间内，所述第二监测线与护套层接触，所述第二监测线与耐火线芯之间通过第二隔热填充物隔离。A fire-resistant power cable with full-line temperature measurement and alarm, comprising a plurality of (usually two) refractory cores, the refractory core is sheathed outside, formed between the plurality of refractory cores and the sheath layer There is a first space and a second space; a first monitoring line is provided in the first space, a second monitoring line is provided in the second space, the first monitoring line includes two first steel wires, the The first steel wire is covered with a first temperature-sensitive insulating material with a negative temperature coefficient, and two first steel wires are twisted together; the second monitoring wire includes two second steel wires, and the second steel wire is covered with A second temperature-sensitive insulating material with a negative temperature coefficient, two second steel wires are twisted together; in the first space, the first monitoring wire is in contact with the refractory core, the first monitoring wire is There is a first insulating filler in the room; in the second space, the second monitoring wire is in contact with the sheath layer, and the second monitoring wire and the refractory core are separated by a second insulating filler.
具体地，所述耐火线芯包括导体，所述导体外依次为云母带层和绝缘层。Specifically, the refractory core includes a conductor, and outside the conductor are a mica tape layer and an insulating layer in this order.
为了防止监测线芯位置偏离错位,所述耐火线芯的绝缘层同时挤出成一体，即两耐火线芯绝缘同时挤出为一层(一体)的结构。In order to prevent the position of the monitoring wire core from being misaligned, the insulating layers of the refractory wire core are simultaneously extruded into one body, that is, the insulation of the two refractory wire cores is simultaneously extruded into a layer (integrated) structure.
为了防止耐火线芯对第二监测线的温度影响，所述第二监测线与第二隔热填充物之间设置有隔热骨架。In order to prevent the temperature influence of the refractory wire core on the second monitoring wire, an insulating framework is provided between the second monitoring wire and the second insulating filler.
本实用新型可监测敷设全线路环境温度，可监测电缆表面温度值，并在温度超过要求值时报警。为了满足耐火电缆的环境，并在达到一定温度时报警时，本实用新型仅需在常规的安装基础上，额外在电缆始端和末端敷设信号转换器和终端盒即可，安装十分方便。The utility model can monitor the ambient temperature of the laying of the whole line, can monitor the temperature value of the cable surface, and alarm when the temperature exceeds the required value. In order to meet the environment of fire-resistant cables and to alarm when a certain temperature is reached, the utility model only needs to lay a signal converter and a terminal box on the beginning and end of the cable on the basis of conventional installation, and the installation is very convenient.
附图说明BRIEF DESCRIPTION
图1为本实用新型的结构示意图。Figure 1 is a schematic diagram of the utility model.
具体实施方式detailed description
下面结合附图和具体实施方式对本实用新型作进一步详细的说明。The utility model will be described in further detail below with reference to the drawings and specific embodiments.
如图1所示，一种全线路测温报警的耐火电力电缆，包括两个耐火线芯，所述耐火线芯外为护套层11，所述耐火线芯包括导体1，所述导体1外依次为云母带层2和绝缘层3。为了防止监测线芯位置偏离错位,所述耐火线芯的绝缘层3同时挤出成一体，即两耐火线芯绝缘层3同时挤出为一层(一体)的结构。As shown in FIG. 1, a refractory power cable with full-line temperature measurement and alarm includes two refractory cores, the outer side of the refractory core is a sheath layer 11, the refractory core includes a conductor 1, and the conductor 1 The outside is the mica tape layer 2 and the insulating layer 3 in this order. In order to prevent the position of the monitoring wire core from deviating, the insulating layer 3 of the refractory wire core is simultaneously extruded into one body, that is, the two insulating layers 3 of the refractory wire core are simultaneously extruded into a layer (integrated) structure.
所述两个耐火线芯与护套层11之间形成有第一空间和第二空间。所述第一空间内设置有第一监测线，所述第二空间内设置有第二监测线，所述第一监测线包括两根第一钢丝4，所述第一钢丝4外包覆有负温度系数的第一热敏绝缘材料5，两根第一钢丝4绞合在一起；所述第二监测线包括两根第二钢丝7，所述第二钢丝7外包覆有负温度系数的第二热敏绝缘材料8，两根第二钢丝7绞合在一起。当温度变化时，钢丝(导线)间电阻发生变化，在电阻变化达到报 警阀值时，终端盒发出火灾报警信号(需要在电缆始端和末端敷设信号转换器和终端盒)。第一监测线检测电缆温度，第二监测线检测环境温度。A first space and a second space are formed between the two refractory cores and the sheath layer 11. A first monitoring wire is provided in the first space, a second monitoring wire is provided in the second space, the first monitoring wire includes two first steel wires 4, the first steel wire 4 is covered with A first temperature-sensitive insulating material 5 with a negative temperature coefficient, two first steel wires 4 are twisted together; the second monitoring wire includes two second steel wires 7, and the second steel wire 7 is coated with a negative temperature coefficient Of the second heat-sensitive insulating material 8, two second steel wires 7 are twisted together. When the temperature changes, the resistance between the steel wires (wires) changes. When the resistance change reaches the alarm threshold, the terminal box emits a fire alarm signal (requires laying signal converters and terminal boxes at the beginning and end of the cable). The first monitoring line detects the cable temperature, and the second monitoring line detects the ambient temperature.
在第一空间内，所述第一监测线与耐火线芯接触，所述第一监测线与护套层11之间具有第一隔热填充物6。第一监测线与耐火线芯接触，达到对电缆耐火线芯温度监测报警功能。In the first space, the first monitoring wire is in contact with the core of the refractory wire, and there is a first insulating filler 6 between the first monitoring wire and the sheath layer 11. The first monitoring line is in contact with the refractory core to achieve the function of monitoring and alarming the temperature of the refractory core of the cable.
在第二空间内，所述第二监测线与护套层11接触，所述第二监测线与耐火线芯之间通过第二隔热填充物9隔离。第二监测线与护套层11接触，其他部位与耐火线芯通过隔热材料(第二隔热填充物9)相隔,达到对附近环境的监测报警功能。为了防止耐火线芯对第二监测线的温度影响，所述第二监测线与第二隔热填充物9之间设置有隔热骨架10。In the second space, the second monitoring wire is in contact with the sheath layer 11, and the second monitoring wire is separated from the refractory wire core by a second insulating filler 9. The second monitoring wire is in contact with the sheath layer 11, and the other parts are separated from the refractory wire core by a thermal insulation material (second thermal insulation filler 9) to achieve the monitoring and alarm function for the surrounding environment. In order to prevent the temperature influence of the refractory wire core on the second monitoring wire, an insulating framework 10 is provided between the second monitoring wire and the second insulating filler 9.
上述实施例不以任何方式限制本实用新型，凡是采用等同替换或等效变换的方式获得的技术方案均落在本实用新型的保护范围内。The above embodiments do not limit the present invention in any way, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims (5)

  1. 一种全线路测温报警的耐火电力电缆，包括多个耐火线芯，所述耐火线芯外为护套层(11)，其特征在于：所述多个耐火线芯与护套层(11)之间形成有第一空间和第二空间；所述第一空间内设置有第一监测线，所述第二空间内设置有第二监测线，所述第一监测线包括两根第一钢丝(4)，所述第一钢丝(4)外包覆有负温度系数的第一热敏绝缘材料(5)，两根第一钢丝(4)绞合在一起；所述第二监测线包括两根第二钢丝(7)，所述第二钢丝(7)外包覆有负温度系数的第二热敏绝缘材料(8)，两根第二钢丝(7)绞合在一起；在第一空间内，所述第一监测线与耐火线芯接触，所述第一监测线与护套层(11)之间具有第一隔热填充物(6)；在第二空间内，所述第二监测线与护套层(11)接触，所述第二监测线与耐火线芯之间通过第二隔热填充物(9)隔离。A fire-resistant power cable with full-line temperature measurement and alarm, comprising a plurality of fire-resistant cores, the fire-resistant core is sheathed (11) outside, characterized in that: the fire-resistant cores and the sheath (11 ) A first space and a second space are formed between; a first monitoring line is provided in the first space, a second monitoring line is provided in the second space, and the first monitoring line includes two first A steel wire (4), the first steel wire (4) is covered with a first temperature-sensitive insulating material (5) with a negative temperature coefficient, and two first steel wires (4) are twisted together; the second monitoring wire It includes two second steel wires (7), the second steel wires (7) are covered with a second temperature-sensitive insulating material (8) with a negative temperature coefficient, and the two second steel wires (7) are twisted together; In the first space, the first monitoring wire is in contact with the refractory core, and there is a first insulating filler (6) between the first monitoring wire and the sheath layer (11); in the second space, all The second monitoring wire is in contact with the sheath layer (11), and the second monitoring wire is separated from the refractory wire core by a second insulating filler (9).
  2. 根据权利要求1所述的一种全线路测温报警的耐火电力电缆，其特征在于：所述耐火线芯包括导体(1)，所述导体(1)外依次为云母带层(2)和绝缘层(3)。The fire-resistant power cable with full-line temperature measurement and alarm according to claim 1, characterized in that the fire-resistant core comprises a conductor (1), and the mica tape layer (2) and Insulation layer (3).
  3. 根据权利要求2所述的一种全线路测温报警的耐火电力电缆，其特征在于：所述耐火线芯的绝缘层(3)同时挤出成一体。The fire-resistant power cable with full-line temperature measurement and alarm according to claim 2, characterized in that the insulation layer (3) of the fire-resistant core is extruded at the same time.
  4. 根据权利要求1、2或3所述的一种全线路测温报警的耐火电力电缆，其特征在于：所述耐火线芯为两个。The fire-resistant power cable with full-line temperature measurement and alarm according to claim 1, 2 or 3, wherein there are two fire-resistant cores.
  5. 根据权利要求1所述的一种全线路测温报警的耐火电力电缆，其特征在于：所述第二监测线与第二隔热填充物(9)之间设置有隔热骨架(10)。The fire-resistant power cable with full-line temperature measurement and alarm according to claim 1, characterized in that an insulation framework (10) is provided between the second monitoring line and the second insulation filler (9).
PCT/CN2019/120888 2018-12-11 2019-11-26 Fire-resistant power cable for full-line temperature measurement and alarm sounding WO2020119443A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE212019000140.8U DE212019000140U1 (en) 2018-12-11 2019-11-26 Fire-resistant power cord for temperature measurement and alarming for the entire line

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CN201822074917.2 2018-12-11
CN201822074917.2U CN209183310U (en) 2018-12-11 2018-12-11 A kind of fireproof power cable of all fronts channel Temperature Measuring alarm

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