JP2011033093A - Fire resistant two-layer sound insulation pipe for longitudinal pipe - Google Patents
Fire resistant two-layer sound insulation pipe for longitudinal pipe Download PDFInfo
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Abstract
Description
本発明は、縦管用として使用される耐火二層管の周囲に遮音シートを捲回した構成の縦管用耐火二層遮音管に関する。 The present invention relates to a fireproof double-layer sound insulation pipe for a vertical pipe having a structure in which a sound insulation sheet is wound around a fireproof double-layer pipe used for a vertical pipe.
従来、高層住宅やオフィスビルなどの配管として、図1乃至図3に示したような、硬質塩化ビニール製の内管1の外周を繊維混入モルタル製の外管2で被覆した構成の耐火二層管3が使用されている(特許文献1)。この耐火二層管3は、内管1が塩化ビニール製であるため錆びることがなく排水などの流通性が良く、繊維混入モルタルの外管2は耐火性があるので、火災の延焼を防止できる利点があり、通常は、床スラブに埋設された繊維混入モルタルの外皮で合成樹脂製の継手内管を被覆した構成の耐火二層管継手4を介して配管接続される(特許文献2)。 Conventionally, as piping for high-rise houses and office buildings, as shown in FIGS. 1 to 3, the outer periphery of an inner pipe 1 made of hard vinyl chloride is covered with an outer pipe 2 made of fiber-mixed mortar, and the two layers are refractory. A tube 3 is used (Patent Document 1). Since the inner pipe 1 is made of vinyl chloride, the fire-resistant double-layer pipe 3 does not rust and has good flowability such as drainage, and the outer pipe 2 of the fiber-mixed mortar has fire resistance, so that it is possible to prevent the spread of fire. There is an advantage, and usually pipe connection is made through a fireproof two-layer pipe joint 4 having a structure in which a synthetic resin joint inner pipe is covered with a fiber-mixed mortar skin embedded in a floor slab (Patent Document 2).
また、これらの耐火二層管3や耐火二層管継手4に、その内部を流通する排水の騒音が外部へ漏れ難くするための遮音シート5で覆うことも行われている(特許文献3、特許文献4)。この遮音シート5の一例の詳細は図3に示す如くであり、フェルトや発泡ウレタンなどの吸音材6と、ゴムやポリ塩化ビニールシートなどの遮音材7を重層し、その上に更にアルミフィルムとガラスクロスを重合したアルミガラスクロスの防水性耐火材8を貼り合わせて構成されている。 In addition, these fireproof two-layer pipes 3 and fireproof two-layer pipe joints 4 are also covered with a sound insulation sheet 5 for making it difficult for the noise of drainage flowing through the inside to leak outside (Patent Document 3, Patent Document 4). The details of an example of the sound insulating sheet 5 are as shown in FIG. 3, and a sound absorbing material 6 such as felt or foamed urethane and a sound insulating material 7 such as rubber or a polyvinyl chloride sheet are laminated, and an aluminum film is further formed thereon. The waterproof refractory material 8 of an aluminum glass cloth obtained by polymerizing a glass cloth is bonded together.
上記したように耐火二層管継手4は床スラブ10に埋設され、その上下の縦管接続口に耐火二層管3が接続されるが、遮音シート5を巻きつけた耐火二層管継手4の場合、排水騒音は小さくなるが、上層階で床スラブ上に水溜りが生じると、図2の経路9で示したようにその水が遮音シート5の層と繊維混入モルタルの外皮との間を伝って床スラブ10を抜け、更に耐火二層管3の外管2とその遮音シート5との間に侵入し、階下の室が浸水したり、耐火二層管3にカビが発生したりするようになる。耐火二層管継手4の床スラブ10の貫通部上縁11に防水塗装を施せば階下への漏水を防止できるが、実際は、継手4の横枝管と床スラブ10との間には狭い隙間しかないので、完全な防水塗装は困難である。 As described above, the fireproof double-layer pipe joint 4 is embedded in the floor slab 10 and the fireproof double-layer pipe 3 is connected to the upper and lower vertical pipe connection ports. In this case, the drainage noise is reduced, but when a water pool is formed on the floor slab in the upper floor, the water is between the layer of the sound insulation sheet 5 and the outer skin of the fiber-mixed mortar as shown by the path 9 in FIG. Through the floor slab 10, and further enters between the outer pipe 2 of the fireproof double-layer pipe 3 and the sound insulation sheet 5, and the downstairs room is submerged or mold is generated in the fireproof double-layer pipe 3. To come. If waterproofing is applied to the upper edge 11 of the penetration part of the floor slab 10 of the fireproof two-layer pipe joint 4, water leakage to the downstairs can be prevented, but in reality, a narrow gap is formed between the side branch pipe of the joint 4 and the floor slab 10. Therefore, it is difficult to completely waterproof.
また、配管工事現場において耐火二層管3が雨水を被って遮音シート5へ浸透する事故が生じた場合は、吸音材から水分が抜けにくく、カビ発生などの原因になるので、この場合は水濡れした耐火二層管3を交換する再工事を行なうことが要求され、工事費用が嵩む不都合がある。 In addition, if an accident occurs in which the fireproof double-layer pipe 3 is covered with rainwater and penetrates into the sound insulation sheet 5 at the piping construction site, it is difficult for moisture to escape from the sound absorbing material, causing mold and the like. It is required to reconstruct the wet fire-resistant double-layer tube 3 and there is a disadvantage that the construction cost increases.
本発明は、こうした不都合等を解消し、耐火二層管の性能と遮音性を損なわずに遮音シートへの浸水を簡単且つ確実に防止することを課題とするものである。 An object of the present invention is to eliminate such inconveniences and to easily and reliably prevent water intrusion into a sound insulation sheet without impairing the performance and sound insulation properties of the fireproof double-layer pipe.
本発明では、上記課題を解決すべく、合成樹脂製の内管を繊維混入モルタル製の外管で被覆した耐火二層管の外周を、吸音材からなる内層と、防水性耐火材の外層と、これら内層と外層の間に遮音材からなる中間層とを有する耐火防水性の遮音シートで捲回した構成の縦管用耐火二層遮音管において、該縦管用耐火二層遮音管の上端側で外管を遮音シートから突出させ、該外管の突出部の周面から該遮音シートの上端部周面までを防水材で被覆した。該防水材は、該外管の突出部の周面から該遮音シートの上端部周面までを覆う第1防水材と、第1防水材の外管の周面上の端部を覆う第2防水材で構成され、該遮音シートの内層をフェルトあるいは発泡樹脂の吸音材とし、外層をアルミガラスクロス製の防水性耐火材とし、中間層をポリ塩化ビニールシートの遮音材とし、該防水材をアルミガラスクロス製の粘着テープとすることで、安価に本発明の課題を解決できる。 In the present invention, in order to solve the above-mentioned problems, the outer periphery of a fireproof two-layer pipe in which an inner pipe made of synthetic resin is covered with an outer pipe made of fiber-mixed mortar, an inner layer made of a sound absorbing material, and an outer layer of a waterproof fireproof material In the double-layer fireproof double-layer sound insulation tube having a structure wound with a fireproof and waterproof soundproof sheet having an intermediate layer made of a sound insulation material between the inner layer and the outer layer, The outer tube was protruded from the sound insulating sheet, and the peripheral surface of the protruding portion of the outer tube to the peripheral surface of the upper end portion of the sound insulating sheet was covered with a waterproof material. The waterproof material includes a first waterproof material that covers from the peripheral surface of the projecting portion of the outer pipe to the peripheral surface of the upper end portion of the sound insulation sheet, and a second cover that covers an end of the first waterproof material on the peripheral surface of the outer pipe. It is composed of a waterproof material, the inner layer of the sound insulation sheet is made of felt or foamed resin sound absorption material, the outer layer is made of a waterproof fireproof material made of aluminum glass cloth, the intermediate layer is made of a sound insulation material of a PVC sheet, and the waterproof material is made of By using an adhesive tape made of aluminum glass cloth, the problems of the present invention can be solved at low cost.
上層の階で漏水が発生したとき、床スラブに埋設した耐火二層管継手の周囲を伝って縦管用耐火二層遮音管の上端部へと漏水するが、該遮音管に巻かれた遮音シートよりも外管が突出しており、遮音シートの上端部は外管の突出部の周面から該遮音シートの上端部周面までを覆った防水材により遮蔽されているので、漏水は防水材の表面に沿って遮音シートの外層の防水性耐火材の表面へと流れ、遮音シートの吸音材に侵入することがなく、カビや異臭の発生が防止できる。また、配管作業のために用意した縦管用耐火二層遮音管が降雨などにより水濡れしても、その防水材を設けた上端側からは遮音シート内に浸水することがないので資材の品質の低下を防止できる。 When water leaks on the upper floor, water leaks around the fireproof double-layer pipe joint embedded in the floor slab to the upper end of the vertical fireproof double-layer soundproof pipe, but the sound insulation sheet wound around the sound insulation pipe Since the outer pipe protrudes more than the upper end of the sound insulation sheet, the outer pipe is shielded by a waterproof material covering from the peripheral surface of the protrusion of the outer pipe to the upper peripheral surface of the sound insulation sheet. It flows along the surface to the surface of the waterproof refractory material on the outer layer of the sound insulation sheet, and does not enter the sound absorption material of the sound insulation sheet, thereby preventing the occurrence of mold and odor. In addition, even if the vertical fireproof double-layer sound insulation pipe prepared for piping work gets wet due to rain, etc., it will not be submerged in the sound insulation sheet from the upper end side where the waterproof material is provided. Decline can be prevented.
この耐火二層管はその長さを調整するとき、外管を内管からスライドさせ、必要な寸法に内管及び外管を切断し、遮音シートも切断されるが、防水材を外管の周面と遮音シートの上端周面にまたがって被覆してあるので、この切断作業を滞り無く実施できる。 When adjusting the length of this refractory double-layer pipe, slide the outer pipe from the inner pipe, cut the inner pipe and outer pipe to the required dimensions, and cut the sound insulation sheet. Since it covers the peripheral surface and the upper peripheral surface of the sound insulation sheet, this cutting operation can be carried out without delay.
該防水材を、上記のように外管の突出部の周面から該遮音シートの上端部周面までを第1防水材で覆い、更に第1防水材の外管の周面上の端部を第2防水材で覆うことにより、外管の周面から第1防水材が遊離することを防げ、確実な防水性が得られる。また、該防水材をアルミガラスクロス製の粘着テープとすることにより、耐火性が具備されるので、遮音シートの内層をフェルトあるいは発泡樹脂の吸音材とし、外層をアルミガラスクロス製の防水性耐火材とし、中間層をポリ塩化ビニールシートの遮音材とした遮音シートを持つ耐火二層管の耐火性を維持できる。 The waterproof material is covered with the first waterproof material from the peripheral surface of the protruding portion of the outer pipe to the upper peripheral surface of the sound insulating sheet as described above, and the end portion of the first waterproof material on the peripheral surface of the outer tube. By covering the surface with the second waterproof material, it is possible to prevent the first waterproof material from being released from the peripheral surface of the outer tube, and to obtain a certain waterproof property. In addition, since the waterproof material is made of an adhesive tape made of aluminum glass cloth, fire resistance is achieved, so that the inner layer of the sound insulation sheet is made of a felt or foamed resin sound absorbing material, and the outer layer is made of waterproof fireproof material made of aluminum glass cloth. It is possible to maintain the fire resistance of a fireproof two-layer pipe having a sound insulation sheet made of a material and having an intermediate layer as a sound insulation material of a polyvinyl chloride sheet.
本発明の実施の形態を図面に基づき説明すると、図4及び図5において、符号3は合成樹脂製の内管1を繊維混入モルタル製の外管で被覆した耐火二層管、符号5は該耐火二層管3の外周に捲回した遮音シートを示し、該遮音シート5は、内層を構成するフェルトや発泡ポリウレタンなどの吸音材6と、アルミ箔とガラスクロスを重合したアルミガラスクロス製の防水性耐火材8の外層と、これらの内層と外層の間のポリ塩化ビニールシート製の遮音材7からなる中間層を備えて縦管用耐火二層遮音管12に構成されており、こうした構成は前記した従来のものと略同様で、合成樹脂製の継手内管17の外周を繊維混入モルタル製の継手外管18で覆い、その外周に遮音シート5aを備えた耐火二層管継手4の上下の接続口に縦管として接続されることも従来のものと同様である。 The embodiment of the present invention will be described with reference to the drawings. In FIGS. 4 and 5, reference numeral 3 denotes a fireproof double-layer pipe in which a synthetic resin inner pipe 1 is covered with a fiber-mixed mortar outer pipe, and reference numeral 5 denotes the A sound insulation sheet wound around the outer periphery of the fireproof double-layer tube 3 is shown. The sound insulation sheet 5 is made of an aluminum glass cloth obtained by polymerizing a sound absorbing material 6 such as felt or polyurethane foam constituting an inner layer, and an aluminum foil and a glass cloth. An outer layer of the waterproof refractory material 8 and an intermediate layer made of the polyvinyl chloride sound insulation material 7 between the inner layer and the outer layer are configured into a fireproof two-layer sound insulation tube 12 for vertical pipes. Similar to the conventional one described above, the outer periphery of the joint inner pipe 17 made of synthetic resin is covered with a joint outer pipe 18 made of fiber-mixed mortar, and the upper and lower sides of the fireproof two-layer pipe joint 4 provided with a sound insulation sheet 5a on the outer periphery. Connected as a vertical pipe to the connection port It is also similar to that of conventional one.
本発明のものでは、図5に明示したように、縦管用耐火二層遮音管12の上端側で外管2と遮音シート5の上端から例えば20〜30mm突出させ、その突出部13の周面から遮音シート5の上端部周面までをアルミガラスクロス製の粘着テープからなる防水材14を被覆接着し、これにより縦管として耐火二層管継手4に接続したとき、その周囲からの漏水が遮音シート5の吸音材6に浸入することがないようにした。その詳細は図6に示す如くであり、防水材14は外管2の突出部13の周面から遮音シート5の上端部周面までを覆う第1防水材14aと、第1防水材14aの外管の周面上の端部15を覆う第2防水材14bで構成し、第1防水材14aが突出部13の周面から遊離し難くなるようにした。 In the present invention, as clearly shown in FIG. 5, for example, 20 to 30 mm is projected from the upper end of the outer tube 2 and the sound insulation sheet 5 on the upper end side of the vertical fireproof double-layer sound insulation tube 12, and the peripheral surface of the projecting portion 13 When the waterproof material 14 made of an adhesive tape made of aluminum glass cloth is coated and bonded to the peripheral surface of the sound insulation sheet 5 and connected to the fireproof double-layered pipe joint 4 as a vertical pipe, water leakage from the surroundings is prevented. The sound absorbing sheet 5 is prevented from entering the sound absorbing material 6. The details are as shown in FIG. 6, and the waterproof material 14 includes a first waterproof material 14 a that covers from the peripheral surface of the protruding portion 13 of the outer tube 2 to the peripheral surface of the upper end portion of the sound insulating sheet 5, and the first waterproof material 14 a. It comprised with the 2nd waterproofing material 14b which covers the edge part 15 on the surrounding surface of an outer tube | pipe, and it was made hard to separate | separate the 1st waterproofing material 14a from the surrounding surface of the protrusion part 13. FIG.
本発明のものによれば、耐火二層管継手4の周囲からの漏水は図6に示すように接続部を覆う耐火カバー16の内面を伝って遮音シート5へと流下するが、第1、第2の防水材14に阻まれて防水性耐火材8の表面に沿って流れ、吸音材6に浸透することがなく、カビや異臭の原因になることがなく、漏水に伴う後始末を短時間に終え得る。また、配管現場において降雨などに曝されても防水材14により吸音材6に浸水することが防止でき、資材の品質の低下を防止できる。また、縦管用耐火二層遮音管12の長さ寸法を短く調整するときは、該内管1と外管2を相対的にスライドさせ、内管1、外管2および遮音シート5を切断することで簡単に調整できる。 According to the present invention, water leakage from the periphery of the fireproof two-layer pipe joint 4 flows down to the sound insulation sheet 5 along the inner surface of the fireproof cover 16 covering the connecting portion as shown in FIG. It is blocked by the second waterproof material 14 and flows along the surface of the waterproof fire-resistant material 8 so that it does not penetrate into the sound-absorbing material 6 and does not cause mold or odor. You can finish in time. Moreover, even if it is exposed to rain or the like at the piping site, it is possible to prevent the sound absorbing material 6 from being flooded by the waterproof material 14 and to prevent deterioration of the quality of the material. Further, when adjusting the length of the vertical fireproof double-layer sound insulation pipe 12 to be short, the inner pipe 1 and the outer pipe 2 are relatively slid to cut the inner pipe 1, the outer pipe 2 and the sound insulation sheet 5. Can be easily adjusted.
1 内管、2 外管、3 耐火二層管、4 耐火二層管継手、5 遮音シート、6 吸音材、7 遮音材、8 防水性耐火材、12 縦管用耐火二層遮音管、13 突出部、14 防水材、14a 第1防水材、14b 第2防水材、 DESCRIPTION OF SYMBOLS 1 Inner pipe, 2 Outer pipe, 3 Fireproof double layer pipe, 4 Fireproof double layer pipe joint, 5 Sound insulation sheet, 6 Sound absorption material, 7 Sound insulation material, 8 Waterproof fireproof material, 12 Fireproof double layer sound insulation pipe for vertical pipe, 13 Protrusion Part, 14 waterproof material, 14a 1st waterproof material, 14b 2nd waterproof material,
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JP2013047566A (en) * | 2011-07-27 | 2013-03-07 | Funen Akurosu Kk | Sound insulating cover for piping connection part |
JP2013210012A (en) * | 2012-03-30 | 2013-10-10 | A & A Material Corp | Connecting structure for sound-insulating and fire-resistant pipe and sound-insulating and fire-resistant pipe joint, sound-insulating and fire-resistant pipe joint, and connecting method for sound-insulating and fire-resistant pipe and sound-insulating and fire-resistant pipe joint |
JP2014126095A (en) * | 2012-12-26 | 2014-07-07 | Showa Denko Kenzai Kk | Fire resistant double-layer pipe |
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