JP2005294232A - Cable equipped with abnormal temperature rise sensing function - Google Patents

Cable equipped with abnormal temperature rise sensing function Download PDF

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JP2005294232A
JP2005294232A JP2004132261A JP2004132261A JP2005294232A JP 2005294232 A JP2005294232 A JP 2005294232A JP 2004132261 A JP2004132261 A JP 2004132261A JP 2004132261 A JP2004132261 A JP 2004132261A JP 2005294232 A JP2005294232 A JP 2005294232A
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electric wire
main
insulator
cable
covered
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JP4543277B2 (en
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Chikao Matsui
周生 松井
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Tornex Inc
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Tornex Inc
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<P>PROBLEM TO BE SOLVED: To provide a cable equipped with abnormal temperature rise sensing function in which even a local abnormal temperature rise happened in a cable can be discovered at an early stage and the cover material of the cable and its surrounding are not burnt. <P>SOLUTION: In the cable, a thin cable 3 which is covered by a heat-melting insulator 2 melting at an established temperature is contacted with main cables 4, and in that state the main cables 4 and the thin cable 3 are covered by a main insulator 5, and furthermore, a monitor device for watching electric conduction between these cables is provided between the main cable 4 and the thin cable 3, and based on the sensing signal of electric conduction from this monitor device, a breaker for electric supply to the main cable 4 is provided. By watching the electric conduction between the main cable 4 and the thin cable 3, abnormal temperature rise of the main cable 4 is sensed, and since electric supply to the main cable 4 is cut off by the sensing signal of the electric conduction from the monitor device, even a local abnormal temperature rise happening in the cable can be discovered at an early stage, and the cover material of the cable and its surrounding are not burnt. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、電線の破損等による異常熱上昇を早期に発見し、火災等の発生を未然に防止することが出来る異常熱上昇感知機能付電線に関し、詳しくは、設定温度で熱融解する絶縁体にて被覆した細電線を主電線に接触させ、その状態のまま主絶縁体にて被覆して、主電線から発生した熱により細電線の熱融解絶縁体が熱融解して、主電線と細電線とが電気的導通状態をもって、異常熱上昇を感知するようにした異常熱上昇感知機能付電線に関する。  The present invention relates to an electric wire with an abnormal heat rise detection function that can detect an abnormal heat rise due to breakage of an electric wire at an early stage and prevent the occurrence of a fire or the like, and more specifically, an insulator that melts heat at a set temperature. The thin electric wire covered with is brought into contact with the main electric wire and covered with the main insulator as it is, and the heat melting insulator of the fine electric wire is melted by the heat generated from the main electric wire, so that the main electric wire The present invention relates to an electric wire with an abnormal heat rise sensing function that senses an abnormal heat rise while being in electrical continuity with an electric wire.

従来、電線の破損等による異常熱上昇を来たし、その結果火災が発生することを防止するには、（１）まず、電線を被覆している絶縁材を不燃性材料や難燃性材料にして、着火しないようにすること、
（２）そして、（１）の対策に加えて、電気機器類にサーマルリレーなどを付帯させ、このサーマルリレーなどの作動により、電気機器類への電気供給をやめて、電気機器類の発熱及びそれによる周辺の可燃物への着火を防ぐこと、などが知られている。In order to prevent the occurrence of fire as a result of abnormal heat rise due to breakage of electric wires in the past, (1) First, make the insulating material covering the electric wires incombustible material or flame retardant material Do n’t ignite,
(2) In addition to the countermeasure of (1), a thermal relay or the like is attached to the electrical equipment, and the operation of this thermal relay or the like stops the supply of electricity to the electrical equipment, It is known to prevent ignition of nearby flammable materials.

まず、（１）の電線の絶縁材を不燃性材料や難燃性材料にする公知例としては、以下のようなものがある。
特開平９−２７９０６５号公報 特開２０００−２０７９５２号公報 特開２００３−２６１７１９号公報 First, as a known example in which the insulating material of the electric wire (1) is made of a non-combustible material or a flame retardant material, there are the following.
Japanese Patent Laid-Open No. 9-279065 JP 2000-207952 A JP 2003-261719 A

（１）の上記した特許文献１ないし３は、いずれも主に絶縁特性が良好で安価な絶縁材であるポリオレフィン系樹脂に難燃性処理を施すことにより、電線の燃焼試験内容である、燃焼距離、燃焼時間、燃焼物の落下についての規格を、満足させるようにしたものである。したがって、電線に生じた異常熱上昇により、絶縁材のポリオレフィン系樹脂が燃焼することを未然に検知し、燃焼を防いで火災を防止するものではない。すなわち、電線の被覆材としてこれらの難燃性処理を施したポリオレフィン系樹脂は、事実上燃焼するが、燃焼したポリオレフィン系樹脂の燃焼時間や延焼距離をできるだけ短くし、更に、燃焼物の落下をなくし、他のものに着火し難くして、最終的に火災を起きずづらくしているに過ぎない。したがって、火災を減らすことはできても、完全に防止することはできない。  The above-mentioned Patent Documents 1 to 3 of (1) are the combustion test contents of electric wires by applying a flame retardant treatment to polyolefin resin, which is an inexpensive insulating material mainly having good insulation characteristics. The standards for distance, burning time, and fall of burned material are satisfied. Therefore, it is not detected in advance that the polyolefin-based resin as the insulating material is burned due to an abnormal heat rise generated in the electric wire, and does not prevent the fire by preventing the combustion. In other words, polyolefin resins that have been subjected to these flame retardant treatments as a coating material for electric wires are actually combusted, but the combustion time and the fire spread distance of the burned polyolefin resin are made as short as possible, and further, the combustion products are dropped. It makes it difficult to ignite other things and make it difficult to fire. Therefore, although fire can be reduced, it cannot be completely prevented.

（２）のものは、電気機器類及び電線に生じた異常熱上昇をサーマルリレーなどにて感知し、電気機器類への電気供給をやめて、火災の発生を防ぐが、電線に生じた局所的な異常熱上昇に対しては感知までに時間がかかり、（１）の場合と同様に、火災を減らすことはできても、完全に防止することはできない。  In the case of (2), an abnormal heat rise generated in electrical equipment and electric wires is detected by a thermal relay, etc., and the supply of electricity to the electrical equipment is stopped to prevent the occurrence of a fire. It takes time to detect the abnormal heat rise, and as in the case of (1), although the fire can be reduced, it cannot be completely prevented.

そこで、本発明は、上記事情に鑑みてなされたもので、電線に生じた局所的な異常熱上昇でも早期に発見でき、電線の被覆材やその周辺物を燃焼させることのない異常熱上昇感知機能付電線を提供することを課題とする。  Therefore, the present invention has been made in view of the above circumstances, and can be detected early even in the case of a local abnormal heat rise occurring in an electric wire, and abnormal heat rise detection without burning the coating material of the electric wire and its surroundings. It is an object to provide a functional electric wire.

本発明は、上記課題を達成するために提案されたものであって、下記の構成からなることを特徴とするものである。
すなわち、請求項１記載の発明は、設定温度で融解する熱融解絶縁体にて被覆した細電線を主電線に接触させ、その状態のまま前記主電線及び前記細電線を主絶縁体にて被覆してなり、前記主電線に発生した異常熱上昇により前記設定温度に達した際、前記細電線の熱融解絶縁体が融解して、前記主電線と前記細電線とが電気的導通状態になるようにしたことを特徴とする。The present invention has been proposed in order to achieve the above-mentioned problems, and is characterized by having the following configuration.
That is, according to the first aspect of the present invention, the fine electric wire covered with the heat melting insulator that melts at the set temperature is brought into contact with the main electric wire, and the main electric wire and the fine electric wire are covered with the main insulator in that state. When the set temperature is reached due to the abnormal heat rise generated in the main electric wire, the heat melting insulator of the thin electric wire is melted, and the main electric wire and the fine electric wire are brought into an electrically conductive state. It is characterized by doing so.

請求項２記載の発明は、設定温度で融解する熱融解絶縁体にて被覆した細電線を主電線に接触させ、その状態のまま前記主電線及び前記細電線を主絶縁体にて被覆し、更に前記主電線と前記細電線との間にこれらの電気的導通状態を見る監視装置を有してなり、前記監視装置にて前記主電線と前記細電線との電気的導通状態を見ることで、前記主電線に異常熱上昇が発生したことを感知するようにしたことを特徴とする。  The invention according to claim 2 is a method in which a thin electric wire covered with a heat melting insulator that melts at a set temperature is brought into contact with the main electric wire, and the main electric wire and the fine electric wire are covered with the main insulator in that state, Furthermore, it has a monitoring device for checking the electrical continuity between the main electric wire and the thin electric wire, and by observing the electric continuity between the main electric wire and the fine electric wire with the monitoring device. The main electric wire is sensed to detect an abnormal heat rise.

請求項３記載の発明は、設定温度で融解する熱融解絶縁体にて被覆した細電線を主電線に接触させ、その状態のまま前記主電線及び前記細電線を主絶縁体にて被覆し、更に前記主電線と前記細電線との間にこれらの電気的導通状態を見る監視装置を有するとともに、該監視装置からの電気的導通の感知信号により前記主電線に対する電気供給を遮断する遮断器を有してなり、前記監視装置にて前記主電線と前記細電線との電気的導通状態を見ることで、前記主電線に異常熱上昇が発生したことを感知し、且つ前記監視装置からの電気的導通の感知信号により前記遮断器にて前記主電線への電気供給を遮断するようにしたことを特徴とする。  The invention according to claim 3 is a method in which a thin electric wire covered with a heat-melting insulator that melts at a set temperature is brought into contact with the main electric wire, and the main electric wire and the fine electric wire are covered with the main insulator in that state, In addition, there is provided a monitoring device for checking the electrical continuity between the main electric wire and the thin electric wire, and a circuit breaker for cutting off the electric supply to the main electric wire according to an electrical continuity detection signal from the monitoring device. The monitoring device senses that an abnormal heat rise has occurred in the monitoring device by observing the electrical continuity between the main wire and the thin wire, and the electrical power from the monitoring device. The electric supply to the main electric wire is cut off by the circuit breaker in response to a sensed continuity detection signal.

請求項４記載の発明は、前記細電線の前記熱融解絶縁体は、前記主電線の主絶縁体よりも融点が高いことを特徴とする。  The invention according to claim 4 is characterized in that the heat melting insulator of the thin electric wire has a higher melting point than the main insulator of the main electric wire.

本発明によれば、以下のような効果がある。
請求項１記載の発明は、主電線に何らかの原因により異常熱上昇が発生し、その異常熱上昇により設定温度に達すると、細電線の熱融解絶縁体が融解するから、主電線と細電線とが電気的導通状態になり、その電気的導通状態を見ることで、主電線に異常熱上昇が発生していることが分かる。したがって、電線に生じた局所的な異常熱上昇であっても、それを早期に発見でき、すぐに適切な処置をとれれば、主電線の被覆材である主絶縁体を燃焼させることがない効果がある。The present invention has the following effects.
In the first aspect of the invention, the abnormal heat rise occurs for some reason in the main electric wire, and when the set temperature is reached due to the abnormal heat rise, the heat melting insulator of the fine electric wire melts. Is in an electrically conductive state, and it can be seen that an abnormal heat rise has occurred in the main wire by observing the electrically conductive state. Therefore, even if there is a local abnormal heat rise in the electric wire, it can be detected early, and if appropriate measures are taken immediately, the main insulator that is the covering material of the main electric wire will not be burned There is.

請求項２記載の発明は、主電線に発生している異常熱上昇を、監視装置にて主電線と細電線との電気的導通状態を見ることで、分かる。したがって、上記効果に加えて、監視装置にて電線に生じた異常熱上昇をすぐに発見できる効果がある。  According to the second aspect of the present invention, the abnormal heat rise occurring in the main electric wire can be understood by looking at the electrical continuity between the main electric wire and the fine electric wire using a monitoring device. Therefore, in addition to the above effects, there is an effect that the monitoring device can immediately detect the abnormal heat rise generated in the electric wire.

請求項３記載の発明は、主電線に発生している異常熱上昇を、監視装置にて感知したあと、その電気的導通の感知信号により遮断器を作動させ、主電線への電気供給を遮断する。したがって、上記効果に加えて、遮断器にて電線に生じている異常熱上昇の原因である、主電線への電気供給を直ちに遮断できる効果がある。  According to the third aspect of the present invention, after the abnormal heat rise occurring in the main electric wire is detected by the monitoring device, the circuit breaker is activated by the electric continuity detection signal to cut off the electric supply to the main electric wire. To do. Therefore, in addition to the above effect, there is an effect that the electric supply to the main electric wire, which is the cause of the abnormal heat rise generated in the electric wire by the circuit breaker, can be immediately interrupted.

請求項４記載の発明は、細電線の熱融解絶縁体が、主電線の主絶縁体よりも融点が高いと、主電線及び熱融解絶縁体被覆の細電線を主絶縁体に被覆加工する際、熱融解絶縁体の融解がない。したがって、上記効果に加えて、主電線及び熱融解絶縁体被覆の細電線に主絶縁体を被覆加工するのが極めて容易となる効果がある。  In the invention according to claim 4, when the melting point of the heat-melting insulator of the thin wire is higher than that of the main insulator of the main wire, the main wire and the thin wire covered with the heat-melting insulator are coated on the main insulator. There is no melting of the thermal melting insulator. Therefore, in addition to the above effect, there is an effect that it becomes very easy to coat the main insulator on the main electric wire and the thin electric wire covered with the heat melting insulator.

以下に、図面を参照して本発明の異常熱上昇感知機能付電線を実施するための最良の形態を説明する。  The best mode for carrying out the electric wire with an abnormal heat rise sensing function of the present invention will be described below with reference to the drawings.

図１は本発明の異常熱上昇感知機能付電線の断面図、図２は本発明の異常熱上昇感知機能付電線の斜視図、図３は本発明の異常熱上昇感知機能付電線のフローシート図である。図面において、１は異常熱上昇感知機能付電線であり、この異常熱上昇感知機能付電線１は、設定温度で融解する熱融解絶縁体２にて被覆した細電線３を主電線４に接触させ、その状態のまま主電線４及び細電線３を主絶縁体５にて被覆し、更に主電線４と細電線３との間にこれらの電気的導通状態を見る監視装置６を有するとともに、この監視装置６からの電気的導通の感知信号により主電線４に対する電気供給を遮断する遮断器７を有してなり、監視装置６にて主電線４と細電線３との電気的導通状態をを見ることで、主電線４に異常熱上昇が発生したことを感知し、且つ監視装置６からの電気的導通の感知信号により遮断器７にて主電線４への電気供給を遮断するようにしたものである。なお、ここで異常熱上昇とは、電線が何らかの原因で高温となり、電線の被覆材や周辺の可燃部を燃焼させる可能性のある場合をいう。  1 is a cross-sectional view of an electric wire with an abnormal heat rise sensing function of the present invention, FIG. 2 is a perspective view of the electric wire with an abnormal heat rise sensing function of the present invention, and FIG. 3 is a flow sheet of the electric wire with an abnormal heat rise sensing function of the present invention. FIG. In the drawings, reference numeral 1 denotes an electric wire with an abnormal heat rise detection function. The electric wire 1 with an abnormal heat rise detection function is configured to bring a fine electric wire 3 covered with a heat melting insulator 2 that melts at a set temperature into contact with a main electric wire 4. In this state, the main electric wire 4 and the fine electric wire 3 are covered with the main insulator 5, and further, there is a monitoring device 6 for checking the electric conduction state between the main electric wire 4 and the fine electric wire 3, and this It has a circuit breaker 7 that cuts off the electric power supply to the main electric wire 4 in accordance with an electric conduction detection signal from the monitoring device 6, and the electric conduction state between the main electric wire 4 and the fine electric wire 3 is determined by the monitoring device 6. By seeing, it is detected that an abnormal heat rise has occurred in the main electric wire 4, and the electric supply to the main electric wire 4 is interrupted by the circuit breaker 7 by the electric conduction detection signal from the monitoring device 6. Is. Here, the abnormal heat rise refers to a case where the electric wire becomes high temperature for some reason and there is a possibility of burning the coating material of the electric wire or the surrounding combustible part.

前記主電線４及び前記細電線３は、銅、アルミニウム、鉄などの電導体であり、細電線３は主電線４に巻き付け可能な程度の柔軟性があれば、特に限定がない。主電線４も電線としての柔軟性が必要であり、加えて、細電線３は多少の弾性が必要である。この多少の弾性程度は、予め設定した温度下で、細電線３に被覆してある熱融解絶縁体２が融解して細電線２が剥き出しになった際、主電線４及び細電線３が接触して電気的導通をする程度の弾性である。また、これら主電線４及び細電線３は、同材質であっても、異材質であっても良く、要は予め設定する温度条件の内容によりそれらの材質を決定する。  The main electric wire 4 and the fine electric wire 3 are conductors such as copper, aluminum, and iron, and the thin electric wire 3 is not particularly limited as long as it has flexibility enough to be wound around the main electric wire 4. The main electric wire 4 needs to be flexible as an electric wire, and in addition, the thin electric wire 3 needs some elasticity. This degree of elasticity is such that the main electric wire 4 and the fine electric wire 3 come into contact when the heat-melting insulator 2 coated on the fine electric wire 3 is melted and the fine electric wire 2 is exposed at a preset temperature. Thus, it is elastic enough to conduct electricity. The main electric wire 4 and the thin electric wire 3 may be made of the same material or different materials, and in short, the materials are determined according to the contents of temperature conditions set in advance.

前記細電線３に被覆している熱融解絶縁体２は、予め設定した温度条件下で、何らかの原因により主電線４に異常熱上昇が発生すると、これに接触しているから融解して細電線３が剥き出しになり、絶縁機能を失い主電線４に接触して電気的導通をするためのものである。  The heat-melting insulator 2 covering the thin wire 3 is melted because it is in contact with the main wire 4 when an abnormal heat rise occurs for some reason under a preset temperature condition. 3 is exposed, loses the insulating function, and comes into contact with the main electric wire 4 for electrical conduction.

また、前記主絶縁体５は、主電線４及び熱融解絶縁体２被覆の細電線３を共に被覆するものであり、図１に示すように、主電線４及び熱融解絶縁体２に直接接触している内層１０と、その外側の外層１１とからなる。内層１０及び外層１１は、ともにポリオレフィン系樹脂が使用されている。内層１０は、熱融解絶縁体２と同等あるいはそれより低い融解点を有するポリオレフィン系樹脂が良く、その理由は、主電線４及び熱融解絶縁体２被覆の細電線３に内層１０を被覆する際、熱融解絶縁体２が融解せず、作り易いからである。そして、外層１１は当然のことながら少なくとも難燃性や耐摩耗性が要求される。  The main insulator 5 covers both the main electric wire 4 and the thin electric wire 3 covered with the heat melting insulator 2, and directly contacts the main electric wire 4 and the heat melting insulator 2 as shown in FIG. The inner layer 10 is composed of the outer layer 11 and the outer layer 11 outside the inner layer 10. Both the inner layer 10 and the outer layer 11 are made of polyolefin resin. The inner layer 10 is preferably a polyolefin-based resin having a melting point equal to or lower than that of the heat-melting insulator 2, because the main layer 4 and the thin wire 3 covered with the heat-melting insulator 2 are covered with the inner layer 10. This is because the heat-melting insulator 2 does not melt and is easy to make. The outer layer 11 is naturally required to have at least flame retardancy and wear resistance.

前記熱融解絶縁体２に使用されるポリオレフィン系樹脂は、比較的高い１５０℃程度の融点を示す、例えば、ポリプロピレン、エチレン共重合ポリプロピレン、ポリ−４−メチル−ペンテン−１などである。前記主絶縁体５に使用されるポリオレフィン系樹脂は、比較的低い１２０℃ないし１３０℃程度の融点を示す、例えば、直鎖状低密度ポリエチレン、メタロセンポリエチレンなどである。なお、熱融解絶縁体２及び主絶縁体５に使用される樹脂は、電線の被覆材としての適性があるものであれば、上記したポリオレフィン系樹脂に限定されるものではない。ただ、熱融解絶縁体２に使用される樹脂は、上述のとおり、主絶縁体５に使用される樹脂よりも融点が高い方が作り勝手がよい。  The polyolefin resin used for the heat-melting insulator 2 is, for example, polypropylene, ethylene copolymerized polypropylene, poly-4-methyl-pentene-1 or the like having a relatively high melting point of about 150 ° C. The polyolefin resin used for the main insulator 5 is, for example, linear low density polyethylene, metallocene polyethylene or the like, which has a relatively low melting point of about 120 ° C. to 130 ° C. The resin used for the heat-melting insulator 2 and the main insulator 5 is not limited to the above-described polyolefin resin as long as it has suitability as a covering material for electric wires. However, as described above, the resin used for the heat-melting insulator 2 has a higher melting point than the resin used for the main insulator 5 and is easier to make.

前記監視装置６は、主電線４の接点Ａと細電線３の接点Ｂとの間に接続し、これらの電気的導通、すなわち、細電線３を被覆している熱融解絶縁体２が融解してその絶縁機能を失い、主電線４と細電線３とが接触している状態、すなわち、予め設定した温度以上の異常熱上昇が主電線４に発生していることを、見るためのものである。更に、この監視装置６は警報器１２に接続し、主電線４の接点Ａと細電線３の接点Ｂとの電気的導通があると、主電線４上に異常熱上昇が発生しているとして、電気的導通の感知信号を警報器１２に出し、それを受けて警報器１２は警報を出す。この警報器１２からの警報を受けて、監視者は適切な対応をとることができる。  The monitoring device 6 is connected between the contact A of the main electric wire 4 and the contact B of the fine electric wire 3, and the electric conduction, that is, the heat melting insulator 2 covering the fine electric wire 3 is melted. In order to see that the main electric wire 4 and the fine electric wire 3 are in contact with each other, that is, that the abnormal heat rise above the preset temperature is occurring in the main electric wire 4. is there. Further, the monitoring device 6 is connected to the alarm device 12 and, if there is electrical continuity between the contact A of the main electric wire 4 and the contact B of the fine electric wire 3, it is assumed that an abnormal heat rise has occurred on the main electric wire 4. Then, an electrical continuity detection signal is output to the alarm device 12, and in response to this, the alarm device 12 outputs an alarm. Upon receiving an alarm from the alarm device 12, the supervisor can take an appropriate action.

前記遮断器７は、異常熱上昇感知機能付電線１の主電線４と電源１３との間に接続し、監視装置６からの電気的導通の感知信号を受けて、主電線４への電源１３からの電気供給を遮断するものである。したがって、これにより、主電線４への電気供給が遮断されるから、主電線４におけるこれ以上の異常熱上昇がなくなり、主絶縁体５及び熱融解絶縁体２として使用されている樹脂が燃えたり、その周囲の可燃物が燃えたりすることがなくなる。  The circuit breaker 7 is connected between the main electric wire 4 of the electric wire 1 with an abnormal heat rise detection function 1 and the power source 13, receives an electrical continuity detection signal from the monitoring device 6, and supplies the power source 13 to the main electric wire 4. It cuts off the electricity supply from the. Therefore, since the electric supply to the main electric wire 4 is cut off by this, no more abnormal heat rises in the main electric wire 4 and the resin used as the main insulator 5 and the heat melting insulator 2 burns. The combustibles around it will not burn.

次に、上記構成になる異常熱上昇感知機能付電線１の利用方法について説明する。
まず、図４に示すように、異常熱上昇感知機能付電線１に、照明機器、家電機器、モータなどの負荷１４が接続されている場合、負荷１４あるいは異常熱上昇感知機能付電線１自体に生じた何らかのトラブルにより、その主電線４に異常熱上昇が発生すると、その熱により主電線４に接触している熱融解絶縁体２が温度上昇し、遂には融点に達し熱融解して、その細電線３が剥き出しとなり絶縁機能を失い、主電線４と細電線３とが接触して電気的導通をすることになり、それを監視装置６が見て主電線４上に異常熱上昇が発生したことを感知し、その旨警報器１２に通知して作動させ、管理者に伝達する。また、図４のように、遮断器７があれば、その遮断器７にもその電気的導通の感知信号を送り、遮断器７は直ちに作動して電源１３を遮断して、火災等の発生を未然に防ぐことができる。一方、監視装置６が主電線４と細電線３との間の電気的導通が無いことを見ているときは、主電線４に異常熱上昇が発生していないことを示す。Next, the usage method of the electric wire 1 with an abnormal heat rise detection function which becomes the said structure is demonstrated.
First, as shown in FIG. 4, when a load 14 such as a lighting device, a household appliance, or a motor is connected to the electric wire 1 with an abnormal heat rise detection function, the load 14 or the electric wire 1 with an abnormal heat rise detection function 1 itself. When an abnormal heat rise occurs in the main electric wire 4 due to some trouble that has occurred, the heat-melting insulator 2 that is in contact with the main electric wire 4 rises in temperature due to the heat, eventually reaches the melting point and heat melts, The fine electric wire 3 is exposed and loses the insulation function, and the main electric wire 4 and the fine electric wire 3 come into contact with each other to conduct electrical continuity. When the monitoring device 6 sees this, an abnormal heat rise occurs on the main electric wire 4. It is detected and notified to the alarm device 12 to that effect, and is transmitted to the manager. In addition, as shown in FIG. 4, if there is a breaker 7, the electrical continuity detection signal is also sent to the breaker 7, and the breaker 7 immediately operates and shuts off the power supply 13 to generate a fire or the like. Can be prevented in advance. On the other hand, when the monitoring device 6 sees that there is no electrical continuity between the main electric wire 4 and the thin electric wire 3, it indicates that no abnormal heat rise has occurred in the main electric wire 4.

なお、監視装置６による電気的導通の感知信号は、無線や構内配線により離れた管理事務所に発信されても良いし、電話回線などを介してセキュリティー会社に発信されても良い。このようにしてあれば、２重にも３重にも安全対策がなされていることになる、  Note that the electrical continuity detection signal by the monitoring device 6 may be transmitted to a remote management office by radio or on-premise wiring, or may be transmitted to a security company via a telephone line or the like. If you do this, safety measures are taken in both double and triple.

以上、本発明の実施例１を説明したが、具体的な構成はこれに限定されず、本発明の要旨を逸脱しない範囲での変更・追加、各請求項における他の組み合わせにかかるものも、適宜可能であることが理解されるべきである。  As described above, the first embodiment of the present invention has been described, but the specific configuration is not limited to this, and modifications and additions within the scope not departing from the gist of the present invention, other combinations in each claim, It should be understood that this is possible as appropriate.

本発明の異常熱上昇感知機能付電線は、局所的に異常熱上昇が発生しても、すぐにそれを感知できるから、一般家屋や燃え易いものを生産しているような工場である場合に、産業上の利用可能性が極めて高くなる。  The electric wire with an abnormal heat rise detection function of the present invention can immediately detect even if an abnormal heat rise occurs locally, so when it is a factory that produces ordinary houses or flammable items Industrial applicability will be extremely high.

本発明の異常熱上昇感知機能付電線の断面図である（実施例１）。It is sectional drawing of the electric wire with an abnormal heat rise detection function of this invention (Example 1). 本発明の異常熱上昇感知機能付電線の斜視図である（実施例１）。(Example 1) which is a perspective view of the electric wire with an abnormal heat rise detection function of this invention. 本発明の異常熱上昇感知機能付電線のフローシート図である（実施例１）。(Example 1) which is a flowchart of the electric wire with an abnormal heat rise detection function of this invention. 本発明の異常熱上昇感知機能付電線の他のフローシート図である（実施例１）。(Example 1) which is the other flow sheet figure of the electric wire with an abnormal heat rise detection function of this invention.

符号の説明Explanation of symbols

１ 異常熱上昇感知機能付電線
２ 熱融解絶縁体
３ 細電線
４ 主電線
５ 主絶縁体
６ 監視装置
７ 遮断器
１０ 内層
１１ 外層
１２ 警報器
１３ 電源
１４ 負荷
Ａ、Ｂ 接点DESCRIPTION OF SYMBOLS 1 Electric wire with abnormal heat rise detection function 2 Thermal fusion insulator 3 Thin wire 4 Main wire 5 Main insulator 6 Monitoring device 7 Breaker 10 Inner layer 11 Outer layer 12 Alarm 13 Power supply 14 Load A, B contact

Claims (4)

設定温度で融解する熱融解絶縁体にて被覆した細電線を主電線に接触させ、その状態のまま前記主電線及び前記細電線を主絶縁体にて被覆してなり、前記主電線に発生した異常熱上昇により前記設定温度に達した際、前記細電線の熱融解絶縁体が融解して、前記主電線と前記細電線とが電気的導通状態になるようにしたことを特徴とする異常熱上昇感知機能付電線。  A thin electric wire covered with a heat-melting insulator that melts at a set temperature is brought into contact with the main electric wire, and the main electric wire and the fine electric wire are covered with the main insulator in that state, and the main electric wire is generated. When the set temperature is reached due to abnormal heat rise, the heat melting insulator of the fine wire is melted so that the main wire and the fine wire are in an electrically conductive state. Electric wire with a rising detection function. 設定温度で融解する熱融解絶縁体にて被覆した細電線を主電線に接触させ、その状態のまま前記主電線及び前記細電線を主絶縁体にて被覆し、更に前記主電線と前記細電線との間にこれらの電気的導通状態を見る監視装置を有してなり、前記監視装置にて前記主電線と前記細電線との電気的導通状態を見ることで、前記主電線に異常熱上昇が発生したことを感知するようにしたことを特徴とする異常熱上昇感知機能付電線。  A thin electric wire covered with a heat melting insulator that melts at a set temperature is brought into contact with the main electric wire, and the main electric wire and the fine electric wire are covered with the main insulator in that state, and the main electric wire and the fine electric wire are further covered. A monitoring device for monitoring the electrical continuity between the main electric wire and the thin electric wire by the monitoring device. An electric wire with an abnormal heat rise detection function, characterized in that it detects the occurrence of water. 設定温度で融解する熱融解絶縁体にて被覆した細電線を主電線に接触させ、その状態のまま前記主電線及び前記細電線を主絶縁体にて被覆し、更に前記主電線と前記細電線との間にこれらの電気的導通状態を見る監視装置を有するとともに、該監視装置からの電気的導通の感知信号により前記主電線に対する電気供給を遮断する遮断器を有してなり、前記監視装置にて前記主電線と前記細電線との電気的導通状態を見ることで、前記主電線に異常熱上昇が発生したことを感知し、且つ前記監視装置からの電気的導通の感知信号により前記遮断器にて前記主電線への電気供給を遮断するようにしたことを特徴とする異常熱上昇感知機能付電線。  A thin electric wire covered with a heat melting insulator that melts at a set temperature is brought into contact with the main electric wire, and the main electric wire and the fine electric wire are covered with the main insulator in that state, and the main electric wire and the fine electric wire are further covered. And a monitoring device for checking the electrical continuity state between them, and a circuit breaker for cutting off the electrical supply to the main wire by a detection signal of electrical continuity from the monitoring device. By detecting the electrical continuity between the main electric wire and the thin electric wire, it is sensed that an abnormal heat rise has occurred in the main electric wire, and the interruption is detected by an electric continuity detection signal from the monitoring device. An electric wire with an abnormal heat rise detection function, wherein the electric supply to the main electric wire is cut off by a container. 前記細電線の前記熱融解絶縁体は、前記主電線の主絶縁体よりも融点が高い請求項１、２または３記載の異常熱上昇感知機能付電線。  4. The electric wire with an abnormal heat rise detection function according to claim 1, wherein the heat melting insulator of the thin electric wire has a melting point higher than that of the main insulator of the main electric wire.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101728014A (en) * 2010-02-03 2010-06-09 李孝杰 Fire-proof cable and method for preventing cable fire
KR101421152B1 (en) 2014-02-10 2014-07-24 주식회사 길건축사사무소 Lintel assembly for masonry construction
US9071058B2 (en) 2013-07-19 2015-06-30 Panasonic Intellectual Property Corporation Of America Charger and electronic apparatus system
US9407101B2 (en) 2013-10-24 2016-08-02 Panasonic Intellectual Property Corporation Of America Charger and electronic apparatus system
CN110619976A (en) * 2019-09-24 2019-12-27 山东华凌电缆有限公司 Self-monitoring signal feedback automatic temperature measurement high-temperature-resistant control cable

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JPS619727U (en) * 1984-06-25 1986-01-21 古河電気工業株式会社 Electrical cable with built-in temperature detection wire
JPH0723529A (en) * 1993-06-30 1995-01-24 Takenaka Komuten Co Ltd Insulated wire provided with overheat protector

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JPS53164681U (en) * 1977-06-01 1978-12-23
JPS619727U (en) * 1984-06-25 1986-01-21 古河電気工業株式会社 Electrical cable with built-in temperature detection wire
JPH0723529A (en) * 1993-06-30 1995-01-24 Takenaka Komuten Co Ltd Insulated wire provided with overheat protector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101728014A (en) * 2010-02-03 2010-06-09 李孝杰 Fire-proof cable and method for preventing cable fire
US9071058B2 (en) 2013-07-19 2015-06-30 Panasonic Intellectual Property Corporation Of America Charger and electronic apparatus system
US9407101B2 (en) 2013-10-24 2016-08-02 Panasonic Intellectual Property Corporation Of America Charger and electronic apparatus system
KR101421152B1 (en) 2014-02-10 2014-07-24 주식회사 길건축사사무소 Lintel assembly for masonry construction
CN110619976A (en) * 2019-09-24 2019-12-27 山东华凌电缆有限公司 Self-monitoring signal feedback automatic temperature measurement high-temperature-resistant control cable

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