JP2016220408A - Cable fireproof heat insulation device - Google Patents
Cable fireproof heat insulation device Download PDFInfo
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- JP2016220408A JP2016220408A JP2015103195A JP2015103195A JP2016220408A JP 2016220408 A JP2016220408 A JP 2016220408A JP 2015103195 A JP2015103195 A JP 2015103195A JP 2015103195 A JP2015103195 A JP 2015103195A JP 2016220408 A JP2016220408 A JP 2016220408A
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- 238000009413 insulation Methods 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000006260 foam Substances 0.000 claims abstract description 15
- 238000005187 foaming Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 88
- 239000011810 insulating material Substances 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 13
- 239000011888 foil Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 6
- 230000009970 fire resistant effect Effects 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 5
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- -1 amino compound Chemical class 0.000 claims description 4
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 4
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 4
- 150000003863 ammonium salts Chemical class 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 4
- 150000001720 carbohydrates Chemical class 0.000 claims description 4
- 239000007809 chemical reaction catalyst Substances 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- XFZRQAZGUOTJCS-UHFFFAOYSA-N phosphoric acid;1,3,5-triazine-2,4,6-triamine Chemical compound OP(O)(O)=O.NC1=NC(N)=NC(N)=N1 XFZRQAZGUOTJCS-UHFFFAOYSA-N 0.000 claims description 4
- 239000012779 reinforcing material Substances 0.000 claims description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 4
- 239000004254 Ammonium phosphate Substances 0.000 claims description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 3
- 229920006243 acrylic copolymer Polymers 0.000 claims description 3
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 3
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 3
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 3
- 239000006261 foam material Substances 0.000 claims description 3
- 239000012784 inorganic fiber Substances 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 238000003763 carbonization Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract 4
- 238000010030 laminating Methods 0.000 abstract 1
- 238000009429 electrical wiring Methods 0.000 description 14
- 239000003973 paint Substances 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 239000002657 fibrous material Substances 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 3
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- 239000005539 carbonized material Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000008119 colloidal silica Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
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- 210000002268 wool Anatomy 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
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- 238000003466 welding Methods 0.000 description 1
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Images
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- Thermal Insulation (AREA)
- Electric Cable Installation (AREA)
- Details Of Indoor Wiring (AREA)
Abstract
Description
本発明は、電気配線ケーブルをその長手方向に沿って被覆してケーブル耐火構造を形成するケーブル耐火断熱装置に関する。 The present invention relates to a cable fireproof and heat insulating device that covers an electrical wiring cable along its longitudinal direction to form a cable fireproof structure.
従来、電気配線ケーブルは、例えば、原子力プラント等で延焼防止機能が求められ、ケーブルに延焼防止塗料を刷毛塗りすることが行われている（周知技術で、適切な文献が見当たらない）。
しかし、この刷毛塗り施工は、塗料の塗りむらが生じやすく、所定以上の厚みのある層は、延焼防止機能を発揮するが、所定の厚みに達していない層は、延焼防止機能が劣り、早期に延焼してしまう危険性があった。
これに対し、近年例えば、原子力発電所などにおいては、上記延焼防止塗料よりも更に高い安定した耐火性能を求められつつある。
そこで、電気配線ケーブルに対して、その長手方向に沿って覆う板金製のケーシングを設け、前記ケーシングの内側に断熱材層を設け、前記ケーシングの外表面を昇温によって発泡する耐火塗料層で被覆してあるケーブル耐火断熱装置（例えば、特許文献１参照）が提案されている。
Conventionally, an electrical wiring cable is required to have a fire spread prevention function in, for example, a nuclear power plant, and brush spreading of a fire spread prevention paint has been performed on the cable (there are no known techniques and no appropriate literature is found).
However, in this brush application, coating unevenness is likely to occur, and a layer with a thickness greater than or equal to a predetermined value exerts a fire spread prevention function, but a layer that does not reach the predetermined thickness is inferior in the fire spread prevention function and is early There was a risk of fire spreading.
On the other hand, in recent years, for example, in nuclear power plants, stable fire resistance performance higher than that of the fire spread prevention paint is being demanded.
Therefore, a sheet metal casing covering the longitudinal direction of the electrical wiring cable is provided, a heat insulating material layer is provided inside the casing, and the outer surface of the casing is covered with a fire-resistant paint layer that is foamed by heating. A cable fireproof and heat insulating device (see, for example, Patent Document 1) has been proposed.
上述した従来のケーブル耐火断熱装置によって、不燃の板金製のケーシングには、その内側に断熱材層を設けてあるために、予め工場生産により層厚の均等な安定した断熱性能を確保できる。又、ケーシングの外表面には、耐火塗料層により被覆されているために、火災にあっても断熱材層の断熱性能に加えてケーブルに対する耐火断熱性能を付与できる。
しかし、前記耐火塗料層は、火災時に発泡して断熱層を形成するものの、脱落する虞があるために、さらなる改良が求められている。
By the above-described conventional cable fireproof and heat insulating device, the nonflammable sheet metal casing is provided with a heat insulating material layer on the inside thereof, so that stable heat insulating performance with a uniform layer thickness can be secured in advance by factory production. In addition, since the outer surface of the casing is covered with a fireproof paint layer, in addition to the heat insulation performance of the heat insulating material layer, fireproof heat insulation performance for the cable can be imparted even in a fire.
However, although the fire-resistant paint layer foams in the event of a fire to form a heat-insulating layer, there is a risk of falling off, so further improvement is required.
従って、本発明の目的は、上記問題点を解消し、電気配線ケーブルに対してより高い耐火断熱機能を、安定して提供するところにある。 Accordingly, an object of the present invention is to eliminate the above-mentioned problems and stably provide a higher fireproof and heat insulating function for an electric wiring cable.
本発明の第１の特徴構成は、第１無機断熱材層と第２無機断熱材層との間でそれらの厚み方向に、熱エネルギーを吸収する吸熱層と昇温に伴って発泡して断熱層を形成する発泡層とを挟んで積層した耐火断熱層で、電気配線ケーブルをその長手方向に沿って被覆してケーブル耐火断熱構造を形成するところにある。 The first characteristic configuration of the present invention is that the first inorganic heat insulating material layer and the second inorganic heat insulating material layer are thermally insulated by foaming as the temperature rises and an endothermic layer that absorbs heat energy in the thickness direction thereof. A fireproof and heat insulating layer laminated with a foam layer forming a layer, and an electric wiring cable is covered along the longitudinal direction to form a cable fireproof and heat insulating structure.
本発明の第１の特徴構成によれば、第１無機断熱材層と第２無機断熱材層とに挟まれる吸熱層と発泡層を設けることにより、吸熱層が火災時の熱エネルギーを吸収すると共に、昇温に伴って発泡して断熱層を形成する発泡層が脱落するのを、第１無機断熱材層と第２無機断熱材層とによって阻止され、安定した耐火断熱性を発揮する耐火断熱層によって、電気配線ケーブルが昇温するのを抑制される。
しかも、例えば無機断熱材層のみによって耐火断熱性を上げることも考えられるけれども、この場合は耐火断熱層全体が厚くなりすぎ、既設の電気配線ケーブルの耐火断熱施工は困難になるばかりか、新設の電気配線ケーブルに対しても、耐火断熱構造が大きな空間を取りすぎて、電気配線の設計の自由度が低下するのに対し、本発明によれば、通常時には、吸熱層や発泡層を厚みの薄い状態で設置できながら、火災時にはその耐火断熱性能を発揮することができ、高い安定したケーブル耐火断熱構造を、施工性を上げながら形成できる。
According to the first characteristic configuration of the present invention, by providing the heat absorption layer and the foam layer sandwiched between the first inorganic heat insulation material layer and the second inorganic heat insulation material layer, the heat absorption layer absorbs thermal energy at the time of fire. At the same time, the first inorganic heat insulating material layer and the second inorganic heat insulating material layer prevent the foamed layer that foams and forms the heat insulating layer from falling with an increase in temperature, and thus exhibits a stable fire resistance. The heat insulation layer suppresses the temperature rise of the electric wiring cable.
In addition, for example, it may be possible to improve the fireproof insulation by using only the inorganic insulation layer, but in this case, the entire fireproof insulation layer becomes too thick, which makes it difficult to install the fireproof insulation of the existing electrical wiring cable. Also for electrical wiring cables, the fireproof and heat insulating structure takes up too much space and the degree of freedom in designing electrical wiring is reduced, whereas according to the present invention, the endothermic layer and the foam layer are usually thickened. While it can be installed in a thin state, it can exhibit its fireproof insulation performance in the event of a fire, and a highly stable cable fireproof insulation structure can be formed while improving workability.
本発明の第２の特徴構成は、前記電気配線ケーブルを被覆する前記耐火断熱層の外周部を、アルミニウム箔付ガラスクロスから成る保護層で覆い、さらにその上から金網及び金属バンドから成る補強材で覆ったところにある。 According to a second characteristic configuration of the present invention, an outer peripheral portion of the refractory heat insulating layer covering the electrical wiring cable is covered with a protective layer made of a glass cloth with aluminum foil, and a reinforcing material made of a metal mesh and a metal band is further formed thereon. It is in the place covered with.
本発明の第２の特徴構成によれば、本発明の第１の特徴構成による上述の作用効果を叶えることができるのに加えて、前記電気配線ケーブルを被覆する前記耐火断熱層の外周部を、アルミニウム箔付ガラスクロスから成る保護層により、施工時に耐火断熱層が損傷するのを防止できながら、火災時に耐火断熱層における無機断熱材などの脱落を防止して、耐火断熱性能を高めることができる。耐火断熱層の外周部を覆う金網及び金属バンドから成る補強材によって、施工現場における耐火断熱層の支持を行って、火災時の耐火断熱構造の形状を保持でき、耐火断熱性能を更に高めることができる。 According to the second characteristic configuration of the present invention, in addition to being able to achieve the above-described operational effects according to the first characteristic configuration of the present invention, the outer peripheral portion of the refractory heat insulating layer covering the electrical wiring cable is provided. In addition, the protective layer made of glass cloth with aluminum foil can prevent the fireproof insulation layer from being damaged at the time of construction, while preventing the fallout of inorganic insulation in the fireproof insulation layer in the event of a fire. it can. The reinforcement material consisting of a metal mesh and metal band that covers the outer periphery of the fireproof insulation layer can support the fireproof insulation layer at the construction site, maintain the shape of the fireproof insulation structure at the time of fire, and further enhance the fireproof insulation performance it can.
本発明の第３の特徴構成は、前記吸熱層は、金属箔ラミネート袋の中に含水した繊維状保温材を気密状に収容したものである。 According to a third characteristic configuration of the present invention, the endothermic layer contains a fibrous heat insulating material containing water in a metal foil laminate bag in an airtight manner.
本発明の第３の特徴構成によれば、繊維状保温材に含まれる水は、安価であり、しかも、金属箔ラミネート袋によって気密状に収容されて長期にわたって保持されながら、火災時の熱エネルギーを、気化熱によって大量に吸収し、電気配線ケーブルの昇温を防止できる。 According to the third characteristic configuration of the present invention, the water contained in the fibrous heat insulating material is inexpensive, and is stored in a gas-tight manner by the metal foil laminate bag and held for a long period of time, so that the heat energy at the time of fire Can be absorbed in large quantities by the heat of vaporization, and the temperature rise of the electrical wiring cable can be prevented.
本発明の第４の特徴構成は、前記繊維状保温材は、セラミック繊維又は生体溶解性繊維に無機バインダー及び水を含浸させたものである。 According to a fourth characteristic configuration of the present invention, the fibrous heat insulating material is obtained by impregnating a ceramic fiber or a biosoluble fiber with an inorganic binder and water.
本発明の第４の特徴構成によれば、セラミック繊維又は生体溶解性繊維に含浸する水は、無機バインダーにより、繊維状保温材上に偏り少なく配分されて保持され、電気配線ケーブルの昇温を均等に防止できる。 According to the fourth characteristic configuration of the present invention, the water impregnated in the ceramic fiber or the biosoluble fiber is distributed and held on the fibrous heat insulating material by the inorganic binder so that the temperature of the electric wiring cable is increased. It can be prevented evenly.
本発明の第５の特徴構成は、前記発泡層は、エポキシ、アクリル、塩化ビニル、ウレタン樹脂、酢酸ビニル・アクリル共重合樹脂の中から選択された樹脂材料と、アンモニウム塩又はアミノ化合物からなる発泡材と、炭水化物又はアルコール類からなる炭化材と、リン酸アンモニウム、ポリリン酸アンモニウム、リン酸メラミンの中から選択された反応触媒を含む耐火発泡材を、無機繊維クロスに塗布したシートから成るものである。 According to a fifth characteristic configuration of the present invention, the foam layer is a foam composed of a resin material selected from epoxy, acrylic, vinyl chloride, urethane resin, vinyl acetate / acrylic copolymer resin, and an ammonium salt or an amino compound. A sheet made by coating an inorganic fiber cloth with a fireproof foam material containing a reaction catalyst selected from a material, a carbonized material consisting of carbohydrates or alcohols, and ammonium phosphate, ammonium polyphosphate, and melamine phosphate. is there.
本発明の第５の特徴構成によれば、エポキシ、アクリル、塩化ビニル、ウレタン樹脂、酢酸ビニル・アクリル共重合樹脂の中から選択された樹脂材料が、火災による昇温で、アンモニウム塩又はアミノ化合物からなる発泡剤が発泡して、厚さを増しながら断熱性を増加させ、炭水化物又はアルコール類からなる炭化材と、リン酸アンモニウム、ポリリン酸アンモニウム、リン酸メラミンの中から選択された反応触媒により、燃焼しにくい耐火層を形成する。
しかも、前記樹脂材料と発泡剤と反応触媒とを含む耐火発泡材を、無機繊維クロスに塗布したシートから発泡層が形成されるから、昇温に伴う発泡現象が生じても、発泡層の形状維持を良好に行うことができ、電気配線ケーブルの高い耐火断熱性を確保できる。
According to the fifth characteristic configuration of the present invention, a resin material selected from epoxy, acrylic, vinyl chloride, urethane resin, vinyl acetate / acrylic copolymer resin can be used to produce an ammonium salt or an amino compound when heated by a fire. The foaming agent is foamed to increase the thermal insulation while increasing the thickness, and by a reaction material selected from a carbonized material consisting of carbohydrates or alcohols and ammonium phosphate, ammonium polyphosphate, and melamine phosphate. Forms a fireproof layer that is difficult to burn.
In addition, since the foamed layer is formed from a sheet obtained by applying the fireproof foam material including the resin material, the foaming agent, and the reaction catalyst to the inorganic fiber cloth, the shape of the foamed layer can be obtained even if the foaming phenomenon occurs due to the temperature rise. Maintenance can be performed satisfactorily, and high fire resistance and heat insulation of the electric wiring cable can be secured.
本発明の第６の特徴構成は、前記電気配線ケーブルは、ケーブルラック上に支持された状態で設置してあるもので、前記電気配線ケーブルの上方に空間を形成すべく支持金物を設置して、前記耐火断熱層を支持したところにある。 According to a sixth characteristic configuration of the present invention, the electric wiring cable is installed in a state of being supported on a cable rack, and a support hardware is installed to form a space above the electric wiring cable. The refractory heat insulating layer is supported.
本発明の第６の特徴構成によれば、電気配線ケーブルの周囲を耐火断熱層で覆う場合、その耐火断熱層が、それ自身の重みにより垂下して電気配線ケーブル上に伸しかかろうとしても、支持金物により耐火断熱材層が支持されるために、電気配線ケーブル上方の空間が支持金物により確保される。
従って、火災などによる昇温に伴って、耐火断熱材層が体積膨張や状態変化などにより変形しようとしても、電気配線ケーブル上の断熱空間が確保されるのみならず、耐火断熱材層の変形を抑え、電気配線ケーブルを熱から保護しやすくなる。
According to the sixth characteristic configuration of the present invention, when the periphery of the electric wiring cable is covered with the fireproof heat insulating layer, even if the fireproof heat insulating layer hangs down by its own weight and tries to extend on the electric wiring cable. Since the fireproof heat insulating material layer is supported by the support hardware, the space above the electric wiring cable is secured by the support hardware.
Therefore, even if the refractory insulation layer is deformed due to volume expansion or state change as the temperature rises due to a fire or the like, not only the insulation space on the electric wiring cable is secured but also the refractory insulation layer is deformed. Suppresses and protects the electrical wiring cable from heat.
以下に本発明の実施の形態を図面に基づいて説明する。
〔第１実施形態〕
図１に示すように、電気配線ケーブル１の新設の設置現場はもとより、既設の設置現場においても、電気配線ケーブル１に対して、その径方向及び長さ方向において耐火断熱した状態に覆い保護するために、図３に示すように、第１無機断熱材層３と第２無機断熱材層４との間でそれらの厚み方向に、熱エネルギーを吸収する吸熱層５と昇温に伴って発泡して断熱層を形成する発泡層６とを挟んで積層した耐火断熱層７で、電気配線ケーブル１をその長手方向に沿って巻き付けるように被覆してケーブル耐火断熱構造を形成するケーブル耐火断熱装置を提供する。
Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
As shown in FIG. 1, the
図１に示すケーブルラック２上に配線された既設の電気配線ケーブル１に対し、前記ケーブル耐火断熱装置を設置するには、図２〜図５に示すように、ケーブルラック２の上に、溶接によって網状に成形した溶接金網８を載置して、ケーブルラック２上の電気配線ケーブル１の上方を覆う（図２）。
In order to install the cable fireproof and heat insulating device on the existing
ケーブルラック２、電気配線ケーブル１、溶接金網８を全て覆うように、セラミック繊維材、ガラス繊維ウール、ロックウール、溶融スラグ繊維、生体溶解性繊維の中から選択された繊維材から成るマット状物、又は、ブランケット状物を巻き付けて第１無機断熱材層３を形成する。
A mat-like material made of a fiber material selected from ceramic fiber material, glass fiber wool, rock wool, molten slag fiber, and biosoluble fiber so as to cover the
第１無機断熱材層３の外側に、セラミック繊維又は生体溶解性繊維にコロイダルシリカ、水等を含浸させた吸熱材９を、金属箔ラミネートフィルムで形成した金属箔ラミネート袋１０中に収容して気密状にシールした吸熱パックを、１〜２層巻き付け被覆して吸熱層５を形成する（図５）。
An
前記吸熱層５の外側に、エポキシ、アクリル、塩化ビニル、ウレタン樹脂の中から選択された樹脂材料と、アンモニウム塩又はアミノ化合物からなる発泡剤と、炭水化物又はアルコール類からなる炭化材と、リン酸アンモニウム、ポリリン酸アンモニウム、リン酸メラミンの中から選択された反応触媒をガラスクロスに塗布した耐火発泡シートを巻き付け被覆して発泡層６を形成する（図３、図５）。
Outside the
前記発泡層６の外側に、セラミック繊維材、ガラス繊維ウール、ロックウール、溶融スラグ繊維、生体溶解性繊維の中から選択された繊維材から成るマット状物、又は、ブランケット状物を巻き付けて第２無機断熱材層４を形成する（図３〜図５）。
A mat-like material or a blanket-like material made of a fiber material selected from ceramic fiber material, glass fiber wool, rock wool, molten slag fiber, and biosoluble fiber is wound around the outside of the
前記第２無機断熱材層４の外側に、アルミ箔付ガラスクロスから成る保護層１１を、金網１５及び金属バンド１３から成る補強材で覆い、全体としてケーブル耐火断熱構造を形成する（図４、図５）。
また、補強材の金網１５は、編み込み金網でも溶接金網でもいずれでもよい。
尚、補強材の外周部は、下部を支持するコの字型チャンネル材、Ｌ型鋼材、□型鋼材等からなる支持金具１２とステンレス製の金属バンド１３により電線長手方向の複数個所で全周を縛って前述の被覆状態を安定化してある（図４、図５）。
A
The reinforcing
The outer peripheral portion of the reinforcing material is entirely surrounded at a plurality of locations in the longitudinal direction of the electric wire by a support fitting 12 made of a U-shaped channel material, L-shaped steel material, □ -shaped steel material and the like and a stainless
〔第２実施形態〕
図８に示すように、電気配線ケーブル１を内部に収容保護する電線管１４の場合には、第１実施形態と同様に、電線管１４の外周部を、第１無機断熱材層３、吸熱層５、発泡層６、第２無機断熱材層４を積層した耐火断熱層７で被覆することにより、ケーブル耐火断熱構造を形成してある。
[Second Embodiment]
As shown in FIG. 8, in the case of the
次に、本発明のケーブル耐火断熱構造を、実際の防火設備に近い状況を再現してその耐火断熱性能を試験した。
つまり、図６のグラフに示すように、炉内制御温度を１０００℃以上上昇させた場合に、ケーブルラック２内の温度は、図７のグラフに示すように、１００℃になった状態を約３時間持続させた。
従って、長時間の耐火断熱性能を発揮することが明確になった。
Next, the fireproof and heat insulating structure of the cable of the present invention was tested for its fireproof and heat insulating performance by reproducing the situation close to the actual fireproofing equipment.
That is, as shown in the graph of FIG. 6, when the in-furnace control temperature is increased by 1000 ° C. or more, the temperature in the
Therefore, it became clear that the fireproof insulation performance for a long time was exhibited.
〔別実施形態〕
以下に他の実施の形態を説明する。
〈１〉 前記第１無機断熱材層３と第２無機断熱材層４とに挟まれる吸熱層５と発泡層６とは、いずれが外側でも内側でもよく、また、いずれも１層のみならず、複数層積層させても良い。
〈２〉 前記吸熱層５を形成するのに、金属箔ラミネート袋１０に収容する吸熱材９は、含水させた繊維に代えて、無機多孔質材であれば固形の多孔質体又は、無機粉体に含水させたものであっても良い。また、無機多孔質材に含浸させるのは、水以外にも火災による熱を吸収する液体であればよい。
〈３〉 前記吸熱材９に含浸させるコロイダルシリカに代えて、無機多孔質内で水や気化性の液体を分散させて安定保持させるものであれば、他の無機バインダー等の分散媒であればよい。
[Another embodiment]
Other embodiments will be described below.
<1> Either the
<2> In order to form the
<3> Instead of colloidal silica impregnated in the
尚、上述のように、図面との対照を便利にするために符号を記したが、該記入により本発明は添付図面の構成に限定されるものではない。また、本発明の要旨を逸脱しない範囲において、種々なる態様で実施し得ることは勿論である。 In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry. In addition, it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.
１ 電気配線ケーブル
３ 第１無機断熱材層
４ 第２無機断熱材層
５ 吸熱層
６ 発泡層
７ 耐火断熱層
１１ 保護層
１２ 支持金具
DESCRIPTION OF
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| JP6059289B2 JP6059289B2 (en) | 2017-01-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017034824A (en) * | 2015-07-31 | 2017-02-09 | 積水化学工業株式会社 | Bus duct for power cable |
| JP2019115195A (en) * | 2017-12-25 | 2019-07-11 | 明星工業株式会社 | Cable fire insulation device |
| JP2020036433A (en) * | 2018-08-29 | 2020-03-05 | 日立Ｇｅニュークリア・エナジー株式会社 | Fireproof structure for cables in nuclear power plants and its modification method |
| KR102587325B1 (en) * | 2023-04-11 | 2023-10-13 | (주)지엔티 | A fireproof cover composition of cable tray and fabricating method thereof |
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| JPS62268446A (en) * | 1986-05-14 | 1987-11-21 | 株式会社竹中工務店 | Refractory coating structure of reinforcing bar |
| JPH07131920A (en) * | 1993-11-02 | 1995-05-19 | Fujikura Ltd | Protective cover for power cable |
| JP2003259541A (en) * | 2002-02-28 | 2003-09-12 | A & A Material Corp | Fire-proof covering member for cable |
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| JPS58222844A (en) * | 1982-03-30 | 1983-12-24 | ダンロツプ・リミテツド | Fire-protection shielding layer |
| JPS62268446A (en) * | 1986-05-14 | 1987-11-21 | 株式会社竹中工務店 | Refractory coating structure of reinforcing bar |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2017034824A (en) * | 2015-07-31 | 2017-02-09 | 積水化学工業株式会社 | Bus duct for power cable |
| JP2019115195A (en) * | 2017-12-25 | 2019-07-11 | 明星工業株式会社 | Cable fire insulation device |
| JP2020036433A (en) * | 2018-08-29 | 2020-03-05 | 日立Ｇｅニュークリア・エナジー株式会社 | Fireproof structure for cables in nuclear power plants and its modification method |
| KR102587325B1 (en) * | 2023-04-11 | 2023-10-13 | (주)지엔티 | A fireproof cover composition of cable tray and fabricating method thereof |
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| JP6059289B2 (en) | 2017-01-11 |
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