JP6422461B2

JP6422461B2 - Insulation piping for water supply and construction method for heat insulation piping for water supply

Info

Publication number: JP6422461B2
Application number: JP2016069895A
Authority: JP
Inventors: 英邦飯田; 有秀島; 慶人伊藤; 誠泉水; 卓三萩原
Original assignee: THE FURUKAW ELECTRIC CO., LTD.
Current assignee: THE FURUKAW ELECTRIC CO., LTD.
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2018-11-14
Anticipated expiration: 2036-03-31
Also published as: JP2017180709A

Description

本発明は、配管が断熱部材で被覆された送水用断熱配管、及びこの送水用断熱配管の施工方法に関する。 The present invention, pipe water supply heat insulating pipe coated with a heat insulating member, and a method for construction of the water supply heat insulation pipe.

従来から、送配水を行う配管には、ポリエチレン管などの樹脂製の配管が一般的に使用される。配水用ポリエチレン管は、熱の影響で変形するなど性能が低下する虞があることから、特に消火配管として使用される場合、火災の熱の影響のない個所に布設されて使用される場合が多い。このため、例えば屋外の場合は地中、屋内の場合は不燃性の天井裏等に限定して布設されている。 Conventionally, resin pipes such as polyethylene pipes are generally used for pipes for supplying and distributing water. Since polyethylene pipes for water distribution may be deformed due to the influence of heat and the performance may be reduced, especially when used as fire extinguishing pipes, they are often laid and used in locations that are not affected by the heat of fire. . For this reason, for example, it is laid only in the ground in the case of the outdoors and limited to the nonflammable ceiling or the like in the case of the indoors.

また、特許文献１には、補強層や保護層を有し、これにセラミックファイバーなどの繊維系断熱材や発泡系断熱材、無機系断熱材を使用して、耐火性能を高めた消火配管が開示されている（例えば、特許文献１）。 Further, Patent Document 1 has a fire extinguishing pipe having a reinforcing layer and a protective layer, and using a fiber-based heat insulating material such as ceramic fiber, a foamed heat insulating material, and an inorganic heat insulating material to improve fire resistance. It is disclosed (for example, Patent Document 1).

特開２０１２−２５１６２８号公報JP 2012-251628 A

上述した特許文献１に開示されているような消火配管は、多くの場合、大規模プラントや原子力発電所などの大規模設備の消火用に用いられる。このような大規模設備においては、多くの場合に、配管が複雑に入り組んでいることから、簡便に施工が可能な施工方法と、これに用いられる構造を有する配水用ポリエチレン管の構造の開発が望まれていた。 Fire extinguishing pipes as disclosed in Patent Document 1 described above are often used for extinguishing large-scale facilities such as large-scale plants and nuclear power plants. In such large-scale facilities, in many cases, the piping is complicated and complicated, so it is necessary to develop a construction method that allows simple construction and a structure of a polyethylene pipe for water distribution having a structure used for this construction method. It was desired.

本発明の目的は、上述した課題に鑑みてなされたものであり、簡便に施工可能で、耐火性能と断熱性能が良好な送水用断熱配管、及び当該送水用断熱配管の施工方法を提供することを目的とする。 The object of the present invention is made in view of the above-described problems, and provides a heat-insulating pipe that can be easily constructed and has good fire resistance and heat insulation performance, and a method for constructing the water-insulating pipe. With the goal.

本発明に係る送水用断熱配管は、配管と、前記配管の外周側に設けられた断熱部材と、前記断熱部材を被覆して、前記断熱部材が内部に配置される袋状樹脂部材である樹脂フィルムと、前記袋状樹脂部材に被覆された前記断熱部材の外周側に設けられた金属管と、を備え、前記断熱部材は、複数のシート状断熱材の積層体であり、前記シート状断熱材の両端部の突き合わせ部が円周方向の異なる位置に配置され、複数枚のシート状断熱材が配管の外周に巻付けられ、前記シート状断熱材の両端部の突き合わせ部の隙間からの熱侵入を緩和することができるように、前記各シート状断熱材の内周部の周長は、内周部の巻き付けに必要な長さよりも僅かに長く設定され、前記シート状断熱材の突き合わせ部が押し込まれることにより、前記シート状断熱材の両端部が断熱部材の長さ方向に圧縮されることで、圧縮部近傍の断熱材が僅かに高密度化することが可能なことを特徴とする。 Water supply heat insulation pipe of this invention, a pipe, and the heat insulating member provided on an outer peripheral side of the pipe, and covering the heat insulating member, said insulating member is a bag-shaped resin member disposed in the interior comprising a resin film, and a metal tube provided on the outer periphery of the heat insulating member which is coated on the bag-like resin member, the heat insulating member is a laminate of a plurality of sheets Jodan heated material, The butted portions at both ends of the sheet-like heat insulating material are arranged at different positions in the circumferential direction, a plurality of sheet-like heat insulating materials are wound around the outer periphery of the pipe, and the butted portions at both ends of the sheet-like heat insulating material In order to reduce the heat intrusion from the gap, the circumferential length of the inner peripheral portion of each sheet-like heat insulating material is set slightly longer than the length necessary for winding the inner peripheral portion, and the sheet-like heat insulating material When the butt portion of the material is pushed in, the sheet By both end portions of the insulation material is compressed in the longitudinal direction of the heat insulating member, characterized in that that can be heat-insulating material is slightly higher density of the compressed portion near.

また、前記断熱部材は、５枚または６枚のシート状断熱材の突き合わせ部が円周方向の異なる位置に配置され、前記シート状断熱材の配置がシート状断熱材の枚数に応じて、それぞれ円周方向に所定の間隔で離間して配管に巻付けられていてもよい。上記構成によれば、シート状断熱材の表面が樹脂フィルム層により被覆されているため、樹脂フィルム層を減圧するなどして容易にシート状断熱材を圧縮して、配管と金属管との間に隙間なく充填することができ、耐火性能と断熱性能との両方を高めることができる。 Further, the heat insulating member is arranged at a position where the butted portions of the five or six sheet-like heat insulating materials are different in the circumferential direction, and the arrangement of the sheet-like heat insulating materials depends on the number of sheet-like heat insulating materials, respectively. The pipe may be wound around the pipe at a predetermined interval in the circumferential direction. According to the above configuration, since the surface of the sheet-like heat insulating material is covered with the resin film layer, the sheet-like heat insulating material is easily compressed by, for example, reducing the pressure of the resin film layer, and between the pipe and the metal tube. Can be filled without any gaps, and both fire resistance and heat insulation performance can be improved.

また、前記袋状樹脂部材の内部に配置される断熱部材は、水分を吸収しても耐火性能が維持されるが、上述の通り、樹脂フィルム層により防水されているので、水分による断熱性能の低下を防止することができる。 Further, a heat insulating member disposed inside of the bag-like resin member is fire performance is maintained even when absorbing moisture, as described above, because it is waterproof by the resin film layer, the heat insulating performance due to moisture Can be prevented.

本発明では、断熱部材とは、袋状樹脂部材の内部に配置され、前記袋状樹脂部材により被覆された状態の複数のシート状断熱材の積層体を意味する。 In this invention, a heat insulation member means the laminated body of the some sheet-like heat insulating material of the state arrange | positioned inside the bag-shaped resin member and coat | covered with the said bag-shaped resin member .

また、本発明に係る送水用断熱配管において、前記断熱部材に用いる断熱材料は、セラミックファイバー、生体溶解性ファイバー、ロックウール、シリカエアロジェルを含浸させたグラスウール、及びグラスウールのうちの少なくとも１種からなることが好ましい。袋状樹脂部材としては、透湿性の低い樹脂部材を使用するか、あるいはアルミニウム箔をラミネートした袋状樹脂部材またはアルミニウムを蒸着した袋状樹脂部材を用いてもよい。 Further, the water heat-insulating pipe of this invention, the heat insulating materials to be used for the insulating member is a ceramic fiber, the biologically soluble fiber, rock wool, glass wool impregnated with silica airgel, and at least one of glass wool Preferably it consists of. As the bag-shaped resin member, a resin member having low moisture permeability may be used, or a bag-shaped resin member laminated with an aluminum foil or a bag-shaped resin member deposited with aluminum may be used.

また、本発明に係る送水用断熱配管において、前記断熱部材に用いる断熱材料は、ロックウール、シリカエアロジェルを含浸させたグラスウール、及びグラスウールの少なくとも１種を、前記配管側に配置した第１断熱層と、セラミックファイバー及び生体溶解性ファイバーの少なくとも１種を、前記金属管側に配置した第２断熱層と、を有することが好ましい。 Further, the water heat-insulating pipe of this invention, the heat insulating materials used for thermal insulation member includes a first lock wool, glass wool impregnated with silica airgel, and at least one of glass wool was placed on the pipe side 1 It is preferable to have a heat insulating layer and a second heat insulating layer in which at least one of ceramic fiber and biosoluble fiber is disposed on the metal tube side.

また、本発明に係る送水用断熱配管において、前記断熱部材に用いる断熱材料は、前記配管に最も近い側に、ポリスチレンフォーム、硬質ウレタンフォーム、フェノールフォーム、及び発泡プラスチック保温材の少なくとも１種からなる断熱層を有することが好ましい。 Further, the water heat-insulating pipe of this invention, the heat insulating materials used for thermal insulation member, on the side closest to the pipe, polystyrene foam, rigid polyurethane foam, from at least one phenolic foam, and foam plastics insulation material It is preferable to have a heat insulating layer.

また、本発明に係る送水用断熱配管において、前記樹脂フィルムは、ポリエチレン、ポリプロピレン、ポリエチレンテレフタレート、ポリスチレン、ポリ塩化ビニル、ポリアミドの少なくとも１種の熱可塑樹脂からなる樹脂フィルム、又は前記樹脂フィルムにアルミニウムを積層したフィルムからなることが好ましい。 Moreover, in the heat-insulating piping for water supply according to the present invention, the resin film is a resin film made of at least one thermoplastic resin of polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polyvinyl chloride, and polyamide, or aluminum in the resin film. It is preferable to consist of the film which laminated | stacked.

また、本発明に係る送水用断熱配管において、前記配管は、ポリエチレン管、又は前記ポリエチレン管に鋼帯とポリアリレート繊維とアラミド繊維との少なくとも１種を巻き付けて形成される補強帯状体を有するポリエチレン管であることが好ましい。 Further, in the water supply heat insulating pipe according to the present invention, the pipe has a polyethylene pipe or a polyethylene having a reinforcing band formed by winding at least one of a steel strip, a polyarylate fiber, and an aramid fiber around the polyethylene pipe. A tube is preferred.

また、本発明に係る送水用断熱配管において、前記金属管は、スパイラルダクト鋼管又はシームレス鋼管であることが好ましい。ここで、前記スパイラルダクト鋼管は、金属管に形成されたハゼ部から管内への水の侵入を防止するために、ハゼ部にパッキンを設けて防水処理をするか、あるいはハゼ部の外周に防水テープを巻くことで防水処理をすることが好ましい。 In the heat-insulating piping for water supply according to the present invention, the metal pipe is preferably a spiral duct steel pipe or a seamless steel pipe. Here, in order to prevent water from entering the pipe from the goby part formed in the metal pipe, the spiral duct steel pipe is waterproofed by providing a packing on the goby part, or waterproofed on the outer circumference of the goby part. It is preferable to perform waterproofing by winding a tape.

また、本発明に係る送水用断熱配管の施工方法は、断熱部材が内部に圧縮状態で配置された樹脂フィルムからなる袋状樹脂部材により被覆された複数のシート状断熱材の積層体が配管に巻き付けられた筒状部材を、準備する第１工程と、前記筒状部材を金属管の内部に挿入する第２工程と、前記第２工程終了後に、前記袋状樹脂部材の内部の前記断熱部材を圧縮状態から解放させて、前記断熱部材を前記袋状樹脂部材を介して前記配管と前記金属管との間に充満させる第３工程と、を有する送水用断熱配管の施工方法であって、前記第１工程において、それぞれの前記シート状断熱材の両端部の突き合わせ部を円周方向の異なる位置に所定距離ずらして配置することで、シート状断熱材の両端部の突き合わせ部の隙間からの熱侵入を緩和することができるシート状断熱材の内周部の周長を内周部の巻き付けに必要な長さよりも僅かに長く設定し、シート状断熱材の突き合わせ部を押し込んでシート状断熱材の両端部を断熱シート部材の長さ方向に圧縮して、圧縮部近傍の断熱材を高密度化させることを特徴とする送水用断熱配管の施工方法である。 Moreover, the construction method of water supply heat insulation pipe of this invention, a laminate of a plurality of sheet-like heat insulating material insulation member is covered by a bag-shaped resin member comprising a resin film disposed in a compressed state inside the pipe A first step of preparing a cylindrical member wound around, a second step of inserting the cylindrical member into a metal tube, and after the second step, the heat insulation inside the bag-like resin member by releasing the member from the compressed state, application of the third step and, for water insulation piping that feed having a be filled between the heat insulating member and the pipe through the bag-like resin member and the metal tube It is a method , Comprising: In the said 1st process, the butt | matching of the both ends of a sheet-like heat insulating material is arrange | positioned by shifting the butt | matching part of the both ends of each said sheet-like heat insulating material to the position where it differs in the circumferential direction by predetermined distance Reduces heat intrusion from gaps Set the circumference of the inner periphery of the sheet-like heat insulating material to be slightly longer than the length necessary for winding the inner peripheral portion, and push in the butted portions of the sheet-like heat insulating material to It is the construction method of the water supply heat insulation piping characterized by compressing in the length direction of a heat insulation sheet member, and densifying the heat insulating material of the compression part vicinity .

また、前記断熱部材は、５枚または６枚のシート状断熱材の突き合わせ部が円周方向の異なる位置に、シート状断熱材の枚数に応じて、所定の間隔で離間して配置されるように配管に巻付けられていてもよい。上記構成によれば、断熱部材を構成するシート状断熱材の表面が袋状の樹脂フィルム層で被覆されているため、袋状樹脂部材の内部を減圧するなどして容易に断熱部材を圧縮して、配管と金属管との間に断熱部材を隙間なく充填することができ、耐火性能と断熱性能との両方を高めることができる。 Further, the heat insulating member is arranged so that the butted portions of the five or six sheet-like heat insulating materials are spaced apart from each other at predetermined intervals according to the number of the sheet-like heat insulating materials at different positions in the circumferential direction. It may be wound around the pipe. According to the above configuration, because the surface of the sheet-like insulation material constituting the insulation member is covered with a bag-shaped resin film layer, a bag-like resin member readily insulation member to such an internal depressurizing the compressed to a heat insulating member between the pipe and the metal tube can be filled without a gap, it is possible to improve both the fire resistance and heat insulation performance.

また、断熱部材は、水分を吸収しても耐火性能が維持されるが、吸水により断熱性能が低下するので、上述の通り、樹脂フィルム層により防水されていることから、水分による断熱性能の低下を防止することができる。ここで、袋状樹脂部材として透湿性の低い樹脂部材を使用するか、あるいはアルミニウム箔をラミネートした袋状樹脂部材またはアルミニウムを蒸着した袋状樹脂部材を用いれば、吸湿による断熱性能の低下を防止することができる。 Further, the heat insulating member is fire performance by absorbing moisture is maintained, since the heat insulating performance is lowered by water absorption, as described above, because it is waterproof by the resin film layer, the moisture by the heat insulating performance A decrease can be prevented. Here, if a resin member with low moisture permeability is used as the bag-shaped resin member, or a bag-shaped resin member laminated with aluminum foil or a bag-shaped resin member deposited with aluminum is used, deterioration of heat insulation performance due to moisture absorption is prevented. can do.

また、本発明に係る送水用断熱配管の施工方法において、前記第１工程は、前記断熱部材が挿入された前記袋状樹脂部材の内部を減圧して前記断熱部材を圧縮する工程と、前記断熱部材を圧縮した後に、前記袋状樹脂部材を前記配管に巻きつけて、前記筒状部材を準備する工程と、記断熱部材が挿入された前記袋状樹脂部材の内部を減圧して前記断熱部材を圧縮する工程と、前記断熱部材を圧縮した後に、前記袋状樹脂部材を前記配管に巻きつけて、前記筒状部材を準備する工程と、を有することが好ましい。 Further, in the method of constructing the water supply heat insulation pipe of this invention, the first step includes a step of compressing the insulating member inside of the bag-like resin member in which the heat insulating member is inserted in vacuo, the after compressing the heat insulating member, and winding the said bag-like resin member in the pipe, comprising the steps of preparing the tubular member, and vacuum the inside of the bag-like resin member whose serial heat insulating member is inserted It is preferable to have a step of compressing the heat insulating member and a step of preparing the cylindrical member by winding the bag-shaped resin member around the pipe after compressing the heat insulating member .

また、本発明に係る送水用断熱配管の施工方法において、前記第１工程は、前記断熱部材が装入された前記袋状樹脂部材を前記配管に巻きつける工程と、前記袋状樹脂部材を前記配管に巻きつけた後に、前記袋状樹脂部材の内部を減圧して前記断熱部材を圧縮して、前記筒状部材を準備する工程と、を有することが好ましい。 Further, in the method of constructing the water supply heat insulation pipe of this invention, the first step includes a step of winding the bag-like resin member in which the heat insulating member is charged to the pipe, the bag-like resin member after wound on the pipe, and compressing the insulating member inside of the bag-like resin member under reduced pressure, it is preferable to have a, a step of preparing the tubular member.

また、本発明に係る送水用断熱配管の施工方法において、前記第１工程では、前記袋状樹脂部材を外部から押し潰すことで前記断熱部材を圧縮することが好ましい。 Further, in the method of constructing the water supply heat insulation pipe of this invention, in the first step, it is preferable to compress the thermal insulating member by squeezing the bag-like resin member from the outside.

また、本発明に係る送水用断熱配管の施工方法においては、前記第１工程では、前記袋状樹脂部材の内部を減圧後に、前記袋状樹脂部材が有する開口部を閉塞することで、圧縮された断熱部材を袋状樹脂部材の内部に密閉し、前記第３工程では、前記袋状樹脂部材が有する開口部を開放することで、前記袋状樹脂部材の密閉状態を開封して、前記断熱部材を前記袋状樹脂部材を介して前記配管と金属管との間に充満させることが好ましい。 Moreover, in the construction method of the heat-insulating piping for water supply according to the present invention, in the first step, after decompressing the inside of the bag-shaped resin member, it is compressed by closing the opening of the bag-shaped resin member. and the heat insulating member is sealed into the pouch-like resin member, and in the third step, by opening an opening having said bag-like resin member, by opening the sealed state of the bag-like resin member, wherein it is preferable to fill between the heat insulating member the pipe and the metal tube through the bag-like resin member.

また、本発明に係る送水用断熱配管の施工方法においては、前記第１工程では、前記袋状樹脂部材の内部を脱気して減圧することで、前記断熱部材を厚さ方向に圧縮し、前記第３工程では、前記袋状樹脂部材の開口部からの脱気を中止して、開口部から空気を導入することで、前記袋状樹脂部材の内部を大気圧、あるいは大気圧未満の所定圧力に復圧させることで、前記圧縮された断熱部材を厚さ方向に膨張させて、前記断熱部材の密度を減圧前の断熱材密度より高密度化することが好ましい。 In the method of constructing the water supply heat insulation pipe of this invention, in the first step, reducing the pressure by degassing the inside of the bag-like resin member, compressing the heat insulating member in the thickness direction In the third step, the degassing from the opening of the bag-shaped resin member is stopped, and air is introduced from the opening, so that the interior of the bag-shaped resin member is at atmospheric pressure or less than atmospheric pressure. in Rukoto allowed pressure recovery at a predetermined pressure, thereby expanding the compressed heat insulation member in the thickness direction, it is preferable to densify than insulation material density before decompressing the density of the heat insulating member.

また、本発明に係る送水用断熱配管の施工方法においては、前記第１工程では袋状樹脂部材内を脱気しながら減圧して、前記袋状樹脂部材の減圧状態を保持することで、前記断熱部材を厚さ方向に圧縮した前記筒状部材を金属管の内部に挿入し、前記第３工程では、前記袋状樹脂部材の開口部からの脱気を中止して、開口部から空気を導入することで、前記袋状樹脂部材の内部を大気圧、あるいは大気圧未満の所定圧力に復圧させて、前記圧縮された断熱部材を厚さ方向に膨張させ、前記断熱部材の密度を減圧前の断熱材密度より高密度化することが好ましい。Moreover, in the construction method of the heat-insulating piping for water supply according to the present invention, in the first step, the bag-shaped resin member is depressurized while degassing, and the bag-shaped resin member is maintained in a reduced pressure state, The cylindrical member, in which the heat insulating member is compressed in the thickness direction, is inserted into the inside of the metal tube, and in the third step, the degassing from the opening of the bag-like resin member is stopped and air is discharged from the opening. By introducing, the inside of the bag-like resin member is restored to atmospheric pressure or a predetermined pressure lower than atmospheric pressure, the compressed heat insulating member is expanded in the thickness direction, and the density of the heat insulating member is reduced. It is preferable to make the density higher than the previous heat insulating material density.

また、本発明に係る送水用断熱配管の施工方法においては、前記第２工程終了後に、前記袋状樹脂部材の密閉状態のまま、前記袋状樹脂部材のガス透過性を利用して、前記袋状樹脂部材の内部に空気を浸透させて、前記配管と前記金属管との間の前記袋状樹脂部材の内部に配置された断熱部材に空気を充満させる第３工程と、を有することが好ましい。Moreover, in the construction method of the heat insulation piping for water supply which concerns on this invention, after the said 2nd process, using the gas permeability of the said bag-shaped resin member in the sealing state of the said bag-shaped resin member, the said bag It is preferable to have a third step of allowing air to penetrate into the interior of the resin-like resin member and filling the heat-insulating member disposed inside the bag-like resin member between the pipe and the metal tube with air. .

本発明によれば、簡便に施工可能で、耐火性能と断熱性能が良好な送水用断熱配管、及び当該送水用断熱配管の施工方法を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the construction method of the water supply heat insulation piping which can be constructed simply and has favorable fireproof performance and heat insulation performance, and the said water supply heat insulation piping can be provided.

図１は、本実施形態に係る送水用断熱配管１の断面図である。FIG. 1 is a cross-sectional view of a water supply heat insulating pipe 1 according to the present embodiment. 図２は、断熱部材２０を袋状樹脂部材（樹脂フィルム３０）で密閉する工程について説明するための断熱シートの配置図である。Figure 2 is a layout view of a heat insulation sheet for illustrating a heat insulating member 20 for the step of sealing in a bag-shaped resin member (resin film 30). 図３は、断熱部材２０を圧縮する工程について説明するための袋状樹脂部材（樹脂フィルム３０）中の断熱シートの配置図である。Figure 3 is a layout view of insulation sheets of the bag-shaped resin member (resin film 30) in order to describe a process of compressing the heat insulating member 20. 図４は、断熱部材２０を配管１０に巻き付ける工程について説明するための図である。Figure 4 is a diagram for explaining a step of winding the thermal insulating member 20 to the pipe 10. 図５は、配管１０に巻き付けたときの断熱シート２１〜２６の断面構造を示す図である。FIG. 5 is a diagram illustrating a cross-sectional structure of the heat insulating sheets 21 to 26 when wound around the pipe 10. 図６は、断熱部材２０を配管１０に巻き付けた筒状部材を金属管４０の内部に挿入する工程について説明するための図である。Figure 6 is a diagram for explaining a step of inserting the tubular member wrapped with the heat insulating member 20 to the pipe 10 in the interior of the metal tube 40. 図７は、変形例に係る金属管について説明するための図である。FIG. 7 is a diagram for explaining a metal tube according to a modification.

本発明を実施するための形態（以下、本実施形態という。）について具体例を示して説明する。本実施形態は、配管が内部に断熱部材を有する袋状樹脂部材で被覆された送水用断熱配管、及びこの送水用断熱配管の施工方法に関する。 A mode for carrying out the present invention (hereinafter referred to as the present embodiment) will be described with a specific example. The present embodiment relates to a water supply heat insulation pipe whose pipe is covered with a bag-like resin member having a heat insulation member therein , and a method of constructing the water supply heat insulation pipe.

図１は、本実施形態に係る送水用断熱配管１の断面図である。送水用断熱配管１は、図１に示すように、配管１０と、配管１０の外周側に設けられた断熱部材２０と断熱部材２０の外周側に設けられた金属管４０と、を備える。 FIG. 1 is a cross-sectional view of a water supply heat insulating pipe 1 according to the present embodiment. Water for thermal insulation pipe 1, as shown in FIG. 1, includes a pipe 10, a metal tube 40 provided on the outer peripheral side of the outer peripheral insulation member provided on the side 20 and the heat insulating member 20 of the pipe 10, the .

配管１０は、ポリエチレン管などの熱可塑性の樹脂管であって、所定の配水経路に沿って配置されるものである。具体的に、配管１０の材料としては、ポリエチレン管を用いたり、或いは、このポリエチレン管に鋼帯とポリアリレート繊維とアラミド繊維との少なくとも１種を巻き付けて形成される補強帯状体を有するポリエチレン管を用いたりすることが好ましい。 The pipe 10 is a thermoplastic resin pipe such as a polyethylene pipe, and is arranged along a predetermined water distribution path. Specifically, as a material of the pipe 10, a polyethylene pipe is used, or a polyethylene pipe having a reinforcing strip formed by winding at least one of a steel strip, a polyarylate fiber, and an aramid fiber around the polyethylene pipe. It is preferable to use.

断熱部材２０は、シート状の断熱部材であって、好ましくは、ＪＩＳＡ１３０４（建築構造部分の耐火試験方法）の標準曲線に準じた３０分加熱に対して耐火性能を満足するよう断熱材密度や厚さを適宜調整して用いることができる部材である。具体的には、断熱部材２０に用いる断熱材料としては、例えば、セラミックファイバー、生体溶解性ファイバー、ロックウール、シリカエアロジェルを含浸させたグラスウール、及びグラスウールなどの、断熱性能および耐火性能の高い材料が用いられる。さらに具体的には、後述するように、断熱部材２０に用いる断熱材料は、ロックウール、シリカエアロジェルを含浸させたグラスウール、及びグラスウールの少なくとも１種を、配管１０側に配置した第１断熱層とし、セラミックファイバー及び生体溶解性ファイバーの少なくとも１種を、金属管４０側に配置した第２断熱層とすることが好ましい。さらに、上記第１及び第２断熱層に加えて、断熱部材２０は、配管１０に最も近い側に、ポリスチレンフォーム、硬質ウレタンフォーム、フェノールフォーム、及び発泡プラスチック保温材の少なくとも１種からなる断熱材料を含む断熱層を有することができる。 Heat insulating member 20 is a sheet-like heat insulating member, preferably, a heat insulating material density to satisfy the fire resistance against heating for 30 minutes in conformity with a standard curve of JISA1304 (fire test methods structural building parts) It is a member that can be used by appropriately adjusting the thickness. Specifically, as the heat insulating material used for the heat insulating member 20, for example, ceramic fibers, biosoluble fibers, rock wool, glass wool impregnated with a silica airgel, and the like glass wool, high thermal insulation performance and fire resistance Material is used. More specifically, as described later, the insulating material used for the heat insulating member (20), rock wool, a first insulation glass wool impregnated with silica airgel, and at least one of glass wool was placed on the pipe 10 side The layer is preferably a second heat insulating layer in which at least one of ceramic fiber and biosoluble fiber is disposed on the metal tube 40 side. Furthermore, in addition to the first and second heat insulating layer, heat insulating member 20, on the side closest to the pipe 10, consisting of at least one polystyrene foam, hard urethane foam, phenol foam, and plastic foam insulation material insulation It can have a thermal insulation layer containing material .

また、断熱部材２０は、図１に示すように、樹脂フィルム３０の層間に配置され、断熱部材２０の内層２０ａおよび外層２０ｂが樹脂フィルム３０により被覆されている。ここで、断熱部材２０を構成する複数枚（図１の例では６枚）のシート状断熱材２００の両端部の突き合わせ部の配置は、シート状断熱材２００毎に所定間隔でずらして配置することが望ましい。このようにシート状断熱材２００の両端部の突き合わせ部を配置することで、シート状断熱材２００の両端部の突き合わせ部の隙間からの熱侵入を、前記突き合わせ部の隙間を円周方向の同一位置に設けた場合よりも緩和することができる。また、各シート状断熱材２００の長さは、各シート状断熱材２００を配管に巻き付けた時に、各シート状断熱材２００の両端部の突き合わせ部に隙間ができないように、配管に巻き付け時の外周部の計算上の周長に合わせて設計するか、あるいは僅かに大きめの長さとする必要がある。このように、各シート状断熱材２００の長さを設計することで、各シート状断熱材２００の突き合わせ部の隙間の形成を防止することが可能となる。なお、この際に、各シート状断熱材２００の長さを巻き付け時の外周部の周長に一致させるか、外周部の周長より僅かに大きくするのは、内周部の周長に略一致させると各シート状断熱材２００の突き合わせ部に隙間ができ、前記突き合わせ部からの熱浸入が起こり易くなるためである。この時、各シート状断熱材２００の内周部の周長は、内周部の巻き付けに必要な長さよりも僅かに長くなるが、各シート状断熱材２００の突き合わせ部を押し込むことで、シート状断熱材２００の両端部がシート状断熱材２００の長さ方向に圧縮され、圧縮部近傍の断熱材が僅かに高密度化することで、各シート状断熱材２００の内周部に生じる余長を吸収することができる。 Further, the heat insulating member 20, as shown in FIG. 1, is disposed between layers of the resin film 30, the inner layer 20a and outer layer 20b of the heat insulating member 20 is covered with the resin film 30. Arrangement where the plurality of constituting the heat insulating member 20 disposed in the butt portion of the both end portions of the sheet-like insulation material 200 (six in the example of FIG. 1) is shifted at predetermined intervals in the sheet-like insulation material per 200 It is desirable to do. By arranging the abutting portions at both ends of the sheet-like heat insulating material 200 in this way, the heat intrusion from the gaps at the abutting portions at both end portions of the sheet-like heat insulating material 200 is the same in the circumferential direction. It can be relaxed compared with the case where it is provided at the position. In addition, the length of each sheet-like heat insulating material 200 is such that when each sheet-like heat insulating material 200 is wound around the pipe, there is no gap at the abutting portion at both ends of each sheet-like heat insulating material 200. It is necessary to design in accordance with the calculated peripheral length of the outer peripheral portion, or to have a slightly larger length. Thus, by designing the length of each sheet-like heat insulator 200, it is possible to prevent the formation of a gap butting portion of each sheet-shaped heat insulating material 200. At this time, the length of each sheet-like heat insulating material 200 is made to coincide with the circumferential length of the outer peripheral portion at the time of winding, or slightly larger than the circumferential length of the outer peripheral portion is approximately the circumferential length of the inner peripheral portion. This is because if they are matched, a gap is formed at the abutting portion of each sheet-like heat insulating material 200, and thermal intrusion from the abutting portion is likely to occur. At this time, the circumferential length of the inner peripheral portion of the sheet-like heat insulating material 200 is slightly longer than the length required for winding of the inner peripheral portion, by pushing the butt portion of the sheet-like heat insulating material 200, the sheet both end portions of the Jo heat insulating material 200 is compressed in the longitudinal direction of the sheet-like heat insulator 200, by insulation compression in the vicinity is slightly densified, surplus generated in the inner peripheral portion of the sheet-like heat insulator 200 Can absorb length.

樹脂フィルム３０は、袋状樹脂部材であって、具体的には後述するように、大気圧以下の所定圧力に保持されていることが好ましい。また、樹脂フィルム３０の材料としては、例えば、ポリエチレン、ポリプロピレン、ポリエチレンテレフタレート、ポリスチレン、ポリ塩化ビニル、ポリアミドの少なくとも１種の熱可塑樹脂からなるフィルムを用いることができる。具体的には、内層にポリエチレン、外層にポリアミドを配置した２層の袋状樹脂部材を用いることができる。また、樹脂フィルム３０としては、透湿性の低い樹脂部材を使用するか、あるいはアルミニウム箔をラミネートした袋状樹脂部材またはアルミニウムを蒸着した袋状樹脂部材を用いてもよい。ここで、樹脂フィルム３０は、耐久性を確保するため、フィルム厚さが０．０５ｍｍ以上であることが好ましい。 The resin film 30 is a bag Joju fat member, in particular as described later, which is preferably kept below a predetermined atmospheric pressure. Moreover, as a material of the resin film 30, the film which consists of at least 1 sort (s) of thermoplastic resin of a polyethylene, a polypropylene, a polyethylene terephthalate, a polystyrene, a polyvinyl chloride, and a polyamide can be used, for example. Specifically, a two-layer bag-shaped resin member in which polyethylene is disposed in the inner layer and polyamide is disposed in the outer layer can be used. Moreover, as the resin film 30, you may use the resin member with low moisture permeability, or the bag-shaped resin member which laminated | stacked aluminum foil, or the bag-shaped resin member which vapor-deposited aluminum. Here, the resin film 30 preferably has a film thickness of 0.05 mm or more in order to ensure durability.

金属管４０は、耐火性能を実現するため、上述したように断熱部材２０の外周側に設けられる金属製の管状体である。金属管４０は、スパイラルダクト又はシームレス鋼管から構成されることが好ましい。 The metal tube 40 is a metal tubular body provided on the outer peripheral side of the heat insulating member 20 as described above in order to achieve fire resistance. It is preferable that the metal pipe 40 is comprised from a spiral duct or a seamless steel pipe.

次に、以上のような構成からなる送水用断熱配管１の具体的な施工方法について説明する。 Next, the concrete construction method of the water supply heat insulation piping 1 which consists of the above structures is demonstrated.

まず、図２（Ａ）に示すように、断熱部材２０を袋状の樹脂フィルム３０で密閉にする、言い換えれば袋とじ（袋状の樹脂フィルム３０の開口部分３０ａを閉じる）にする。本工程においては、断熱部材２０は、例えば図２（Ｂ）に示すように６枚の断熱シート２１〜２６を用いる。後述の巻き付け工程から明らかなように、シート状断熱材２１〜２６は、同一の形状であって、長手方向に少しずらす、特に図２（Ｂ）に示すように、シート状断熱材２１、２２、２３、２４、２５、２６の順番に、長手方向に１／６ずらして積層することが好ましい。 First, as shown in FIG. 2 (A), the heat insulating member 20 is in a closed in a bag-like resin film 30, to Flip a bag in other words (close the opening portion 30a of the bag-like resin film 30). In this process, the heat insulating member 20, for example, a heat insulating sheet 21 to 26 in the six as shown in FIG. 2 (B). As is clear from the winding process described below, the sheet-like insulation material 21 to 26 have the same shape, slightly shifted in the longitudinal direction, particularly as shown in FIG. 2 (B), the sheet-like insulation material 21, 22 , 23, 24, 25, and 26 are preferably laminated with a shift of 1/6 in the longitudinal direction.

なお、図２（Ｂ）は、袋樹脂部材（樹脂フィルム３０）を密閉する工程において、シート状断熱材２１〜２６を配管１０の外周に円周方向に間隔をずらして積層して巻き付けるため、シート状断熱材２１〜２６の配置例を示した図である。言い換えれば、図２（Ｂ）は、配管１０に巻き付ける前の密閉時の袋樹脂部材（樹脂フィルム３０）中の断熱部材２０を構成する各シート状断熱材２１〜２６であって、各シート状断熱材２１〜２６の両端部が当接する突き合わせ部の隙間の配置を所定間隔でずらした配置を示している。このように、シート状断熱材の円周方向の両端部が当接する突き合わせ部の隙間の配置を、シート状断熱材の積層枚数に合わせて各層毎に円周方向に等角度になるようにずらすことができる。具体的には、６枚のシート状断熱材２１〜２６を配管１０に巻き付ける場合に、６０°間隔で各シート状断熱材２１〜２６の突き合わせ部を配置する断熱材の構造が得られる。この場合、シート状断熱材巻き付け時の各層毎の周長の増加に対応するように、積層する各シート状断熱材２１〜２６の長さは内層から外層に向かって順にシート厚さの２倍ずつ増加させる必要がある。このようにシート状断熱材２１〜２６の両端部の突き合わせ部を所定間隔でずらして設けることで、送水用断熱配管１が加熱された時に、シート状断熱材２１〜２６の長手方向の両端部の突き合わせ部の隙間からの熱侵入を最も効率的に防止できる。 2B is a step of sealing the bag resin member (resin film 30), the sheet-like heat insulating materials 21 to 26 are laminated and wound around the outer periphery of the pipe 10 at intervals in the circumferential direction. It is the figure which showed the example of arrangement | positioning of the sheet-like heat insulating materials 21-26. In other words, FIG. 2 (B), a respective sheet-like heat insulating material 21 to 26 constituting the bag resin member (resin film 30) heat insulating member 20 in the time before the sealing wrapped around the pipe 10, like each sheet The arrangement | positioning which shifted the arrangement | positioning of the clearance gap of the butting | matching part which the both ends of the heat insulating materials 21-26 contact is shown by the predetermined space | interval is shown. In this way, the arrangement of the gaps of the abutting portions where both ends in the circumferential direction of the sheet-like heat insulating material abut is shifted so as to be equiangular in the circumferential direction for each layer in accordance with the number of laminated sheet-like heat insulating materials. be able to. Specifically, when the six sheet-like heat insulating materials 21 to 26 are wound around the pipe 10, a heat insulating material structure in which the butted portions of the sheet heat insulating materials 21 to 26 are arranged at intervals of 60 ° is obtained. In this case, the length of each sheet-like heat insulating material 21 to 26 to be laminated is twice the sheet thickness in order from the inner layer to the outer layer so as to correspond to the increase in the circumferential length of each layer at the time of winding the sheet-like heat insulating material. It is necessary to increase it step by step. Thus, the both ends of the sheet-like heat insulating materials 21 to 26 in the longitudinal direction when the heat-insulating piping 1 for water supply is heated by providing the butted portions of the both ends of the sheet-like heat insulating materials 21 to 26 at a predetermined interval. It is possible to most effectively prevent the heat intrusion from the gap between the butted portions.

なお、断熱部材２０を構成する各層（本例では６層）については、各層を構成するシート状断熱材が必ずしも１枚のシート部材である場合に限らず、任意の枚数のシート部材を長手方向につなぎ合わせたものであってもよい。例えば図２（Ｂ）に示す例では、最外層のシート状断熱材２６は、最内層のシート状断熱材２１と比べて長くなるため、２枚のシート部材から構成されてもよい。このように任意の枚数のシート部材をつなぎ合わせることで、各層専用の長さのシートを用意しなくてもよく、また、任意の口径の配管に対して容易に隙間無く断熱材を巻き付けることができる。ここで、本実施形態における「つなぎ合わせる」とは、必ずしも接着材などで接合することに限らず、付き合わせて配置してもよい。このため、シート状断熱材２６として任意枚数のシート部材を長手方向につなぎ合わせて使用する場合に、隣接する層間のシート状断熱材の突き合わせ部（つなぎ合わせ部を含む）の配置が円周方向の同一位置とならないようにする必要がある。 Note that the layers (6 layers in this embodiment) constituting the heat insulating member 20, not limited to a sheet-like heat insulating material constituting each layer is not necessarily one sheet member, the longitudinal seat member arbitrary number It may be connected in the direction. For example, in the example shown in FIG. 2B, the outermost sheet-like heat insulating material 26 is longer than the innermost sheet-like heat insulating material 21, and may be composed of two sheet members. In this way, by joining together any number of sheet members, it is not necessary to prepare a sheet having a length dedicated to each layer, and it is possible to easily wrap a heat insulating material around a pipe having an arbitrary diameter without a gap. it can. Here, “joining” in the present embodiment is not necessarily limited to joining with an adhesive or the like, and may be arranged together. For this reason, when an arbitrary number of sheet members are joined together in the longitudinal direction as the sheet-like heat insulating material 26, the arrangement of the butted portions (including the joining portions) of the sheet-like heat insulating materials between adjacent layers is circumferential. It is necessary not to be in the same position.

図３は、袋状樹脂部材３０（樹脂フィルム）を圧縮する工程の説明図である。続いて、図３に示すように、袋状樹脂部材３０で断熱部材２０を密閉した状態で、袋状樹脂部材３０の内部を減圧することにより、断熱部材２０を圧縮する。具体的に、樹脂フィルムからなる袋状樹脂部材３０に設けられた開口部３５に、吸引装置５０のノズル５５を挿入し、ノズル５５により袋状の樹脂フィルム３０内部の空気を吸引すること、すなわち、袋状樹脂部材３０内を脱気することで減圧して断熱部材２０を圧縮する。 Figure 3 is an illustration of a step of compressing the bag-shaped resin member 30 (resin fill beam). Subsequently, as shown in FIG. 3, while closing the heat insulating member 20 in a bag-shaped resin member 30, by decompressing the inside of the bag Joju butter member 3 0, compressing the heat insulating member 20. Specifically, the opening 35 provided in the resin film arm or Ranaru bag-like resin member 30, inserting the nozzle 55 of the suction device 50, to suck the bag-shaped resin film 30 inside the air by the nozzle 55 , i.e., compressing the heat insulating member 20 under reduced pressure by degassing the bag-shaped resin member 30.

続いて、図４に示すように、断熱部材２０の長手方向の端部から延びた樹脂フィルム３０、すなわちシート状断熱材２１のシート状断熱材２２が重畳していない側の短辺２１ａから延びた樹脂フィルム３０と、配管１０とをテープ３６で貼り合わせる。そして配管１０を回転させることで、配管１０にシート状断熱材２１、２２、２３、２４、２５、２６の順番で巻き付ける。 Subsequently, as shown in FIG. 4, the longitudinal direction of the resin film 30 extending from the end portion, i.e. the short side 21a on the side where the sheet-like heat insulating material 22 of the sheet-like insulation material 21 does not overlap the heat insulating member 20 The extended resin film 30 and the pipe 10 are bonded together with a tape 36. And by rotating the piping 10, it winds around the piping 10 in order of the sheet-like heat insulating materials 21, 22, 23, 24, 25, and 26.

ここで、配管１０に巻き付けたときのシート状断熱材２１〜２６の断面構造を図５に示す。図５に示すように、シート状断熱材２１〜２６の順番に、円周方向に６０°ずつずらしながら最内周から最外周に亘って巻き付けられることとなる。これは、上述したように、シート状断熱材２１、２２、２３、２４、２５、２６の順番に、長手方向の両端部が当接する突き合わせ部の隙間２１１、２２１、２３１，２４１，２５１，２６１を、図５に示すように各層毎に６０°ずつずらして配管１０の外周に円周方向に円周の（１／６）分割した位置に配置されるように積層しているためである。図５では、６層のシート状断熱材を巻き付けた場合を示したが、配管に対するシート状断熱材の巻き付け層数は、６層に限らず５層としてもよく、例えば、各層のシート状断熱材を突き合わせや接着を行わずに、１枚で形成して５層のシート状断熱材を巻き付けた場合には、各層の断熱シートの両端部の突き合わせ部の配置間隔は、７２°間隔となる。このように、シート状断熱材の突き合わせ部の配置間隔は、断熱材の種類や被覆厚さなどにより適宜変更することができる。 Here, the cross-sectional structure of the sheet-like heat insulating materials 21 to 26 when wound around the pipe 10 is shown in FIG. As shown in FIG. 5, the sheet-like heat insulating materials 21 to 26 are wound around the outermost periphery from the innermost periphery while shifting by 60 ° in the circumferential direction. As described above, this is because the gaps 211, 221, 231, 241, 251, 261 of the abutting portions where both ends in the longitudinal direction abut in the order of the sheet-like heat insulating materials 21, 22, 23, 24, 25, 26. This is because, as shown in FIG. 5, the layers are stacked so as to be shifted by 60 ° for each layer and arranged on the outer periphery of the pipe 10 in positions circumferentially divided by (1/6). In Figure 5, there is shown the case where winding a sheet-like heat insulating material 6 layers, wound layer number of the sheet-like insulation material for pipes may be five layers it is not limited to six layers, e.g., layers of the sheet-like insulation In the case where a single sheet is formed and wound with 5 layers of sheet-like heat insulating material without butting or bonding the materials , the arrangement interval of the butt portions at both ends of the heat insulating sheet of each layer is 72 °. . Thus, the arrangement | positioning space | interval of the butt | matching part of a sheet-like heat insulating material can be suitably changed with the kind of insulation, coating thickness, etc.

なお、複数枚の断熱シートを厚さ方向に重畳させずに配管に巻き付けたり、層厚の１枚の断熱シートを配管に巻き付けることで、断熱層を形成してもよいが、次の理由から、シート状断熱材２１、２２、２３、２４、２５、２６の順番に、長手方向にシート状断熱材の長さの（１／６）ずつずらして積層することが好ましい。ここで、複数枚のシート状断熱材を重畳させる場合であっても、シート状断熱材２１、２２、２３の３枚をこの順番に重畳させて袋状樹脂部材に詰めて配管１０に巻き付けて減圧後密閉して、さらに、シート状断熱材２４、２５、２６の３枚をこの順番に重畳させて袋状樹脂部材に詰めて配管１０に巻き付け減圧後密閉して使用してもよい。このように、複数の袋状樹脂部材に断熱材を別々に詰めることで、断熱材の密度を、それぞれの袋状樹脂部材によって異なるものとすることができる。 In addition, a heat insulating layer may be formed by winding a plurality of heat insulating sheets around a pipe without overlapping in the thickness direction, or by winding a heat insulating sheet having a layer thickness around a pipe, for the following reason The sheet-like heat insulating materials 21, 22, 23, 24, 25, and 26 are preferably laminated in the order of (1/6) the length of the sheet-like heat insulating material in the longitudinal direction. Here, even when a plurality of sheet-like heat insulating materials are overlapped, three sheet-like heat insulating materials 21, 22, and 23 are overlapped in this order, packed in a bag-like resin member, and wound around the pipe 10. After the pressure reduction, the sheet-like heat insulating materials 24, 25, and 26 may be overlapped in this order, packed in a bag-like resin member, wound around the pipe 10, and sealed and used after the pressure reduction. Thus, the density of a heat insulating material can be varied with each bag-shaped resin member by separately packing a plurality of bag-shaped resin members with a heat insulating material.

また、シート状断熱材２１〜２６を巻き付けた場合には、合計６枚の断熱材を厚さ方向に重畳させずに６重に巻き付けた場合に比べて、断熱部材２０の厚みにムラが生じることなく、断熱部材２０を配管１０に巻き付けることができる。つまり、径方向の厚みにムラが生じないので、金属管４０に対して配管１０が偏心することを防止することができる。 In addition, when the sheet-like heat insulating materials 21 to 26 are wound, the thickness of the heat insulating member 20 is uneven as compared with a case where a total of six heat insulating materials are wound in a six-fold manner without overlapping in the thickness direction. The heat insulating member 20 can be wound around the pipe 10 without any problem. That is, since the thickness in the radial direction is not uneven, it is possible to prevent the piping 10 from being eccentric with respect to the metal tube 40.

さらに、層厚の１枚の断熱シートを断熱材として配管に巻き付けた場合には、シート状断熱材の長手方向の両端部に隙間が生じ、当該隙間が熱の伝達経路となることから断熱性能が低下してしまう。これに対してシート状断熱材２１〜２６を巻き付けた場合には、個々のシート状断熱材２１〜２６の長手方向の両端部に隙間が生じうるが、最外周（断熱シート２６）を除いたシート状状断熱材で覆われるため、断熱性能の低下を抑制することができる。ここで、断熱シートは、図１のようにシート状断熱材２００各層を所定間隔でずらして配置することもできるが、より望ましくは、図６に示すように各層のシート状断熱材２１〜２６の配置間隔を最大化するために、シート状断熱材２１〜２６をそれぞれ６０°ずつずらして配置するのが望ましい。このようにすることで、シート状断熱材２１〜２６の各層の長手方向の両端部の隙間が最も離隔した位置に設けることができるので、シート状断熱材２１〜２６の両端部の隙間からの熱侵入をより効果的に防止することができる。 Furthermore, when a single heat insulating sheet having a layer thickness is wound around the pipe as a heat insulating material, a gap is formed at both ends in the longitudinal direction of the sheet-shaped heat insulating material , and the gap serves as a heat transfer path. Will fall. On the other hand, when the sheet-like heat insulating materials 21 to 26 are wound, gaps may be generated at both ends in the longitudinal direction of the individual sheet-like heat insulating materials 21 to 26, but the outermost periphery (the heat insulating sheet 26) is excluded. Since it is covered with a sheet-like heat insulating material , it is possible to suppress a decrease in heat insulating performance. Here, the heat insulating sheet can be arranged by shifting the respective layers of the sheet-like heat insulating material 200 at a predetermined interval as shown in FIG. 1, but more desirably, the sheet-like heat insulating materials 21 to 26 of each layer as shown in FIG. 6. In order to maximize the arrangement interval, it is desirable to dispose the sheet-like heat insulating materials 21 to 26 by shifting each by 60 °. In this way, since the gap between the longitudinal ends of each layer of the sheet-like heat insulating material 21 to 26 can be provided in the most spaced position, from the gap at both ends of the sheet-like heat insulating material 21 to 26 Heat intrusion can be prevented more effectively.

続いて、図６に示すように、袋状樹脂部材３０の内部に配置された断熱部材２０を配管１０に巻き付けた筒状部材を金属管４０の内部に挿入し、袋状の樹脂フィルム３０に装入された断熱部材２０を圧縮状態から解放させて、袋状樹脂部材３０に被覆された断熱部材２０を配管１０と金属管４０との間に充満させる。金属管４０は、互いに隣接する金属管体のハゼ部４５、４５を接続して形成された金属製の管状体である。図６は、ハゼ部４５が管軸方向に対して螺旋状に設けた例を示している。ここで、ハゼ部４５から管内への水の侵入を防止するために、ハゼ部４５にパッキンを設けて防水処理をするか、あるいはハゼ部４５の外周に防水テープを巻くことで防水処理をすることが好ましい。なお、金属管４０としては、ハゼ部４５を管軸方向に対して垂直に短尺で設けた金属管やシームレス鋼管を用いることもできる。なお、外管にスパイラルダクト鋼管を用いると、ハゼ部４５により、金属管４０の長手方向にリブが形成され、管の断面が補強されることから、金属管４０が薄肉高剛性のものを得ることができる。なお、金属管４０の耐食性を向上させるためには、金属管４０の表面に亜鉛メッキを施した亜鉛めっき鋼板を金属管４０の素材として用いることが望ましい。 Subsequently, as shown in FIG. 6, a tubular member in which the heat insulating member 20 arranged inside the bag-shaped resin member 30 is wound around the pipe 10 is inserted into the metal tube 40, and the bag-shaped resin film 30 is formed. The inserted heat insulating member 20 is released from the compressed state, and the heat insulating member 20 covered with the bag-like resin member 30 is filled between the pipe 10 and the metal pipe 40. The metal tube 40 is a metal tubular body formed by connecting the goby portions 45, 45 of adjacent metal tube bodies. FIG. 6 shows an example in which the goby portion 45 is provided spirally with respect to the tube axis direction. Here, in order to prevent intrusion of water from the goby portion 45 into the pipe, the gouge portion 45 is provided with a packing to be waterproofed or waterproofed by wrapping a waterproof tape around the outer face of the goby portion 45. It is preferable. In addition, as the metal tube 40, a metal tube or a seamless steel tube in which the goby portion 45 is provided in a short length perpendicular to the tube axis direction can also be used. If a spiral duct steel pipe is used for the outer pipe, the rib 45 is formed in the longitudinal direction of the metal pipe 40 by the gouge portion 45 and the cross section of the pipe is reinforced, so that the metal pipe 40 is thin and has high rigidity. be able to. In order to improve the corrosion resistance of the metal tube 40, it is desirable to use a galvanized steel sheet in which the surface of the metal tube 40 is galvanized as a material for the metal tube 40.

具体的には、袋状樹脂部材３０に被覆された断熱部材２０を配管１０と金属管４０との間に充満させるため、袋状の樹脂フィルム３０の内部を減圧後に、袋状の樹脂フィルム３０が有する開口部３５を開放することで、袋状の樹脂フィルム３０の密閉状態を開封する。すなわち、袋状の樹脂フィルム３０の開口部３５からの脱気を中止して、開口部３５から空気を導入することで、袋状の樹脂フィルム３０の内部を大気圧、あるいは大気圧未満の所定圧力に復圧させることで、圧縮された袋状樹脂部材に被覆された断熱部材２０を厚さ方向に膨張させて、断熱部材２０の密度を減圧前より高密度化する。より具体的には、耐火材は、減圧前に比べて圧縮率が５％〜８０％の範囲となるように圧縮することが好ましい。これは、減圧前に比べて圧縮率が８０％を超えて圧縮しすぎると、繊維が破断するなどして断熱性能ないし耐火性能が損なわれてしまうことがあり、５％以下の圧縮率であると、復圧時の断熱材の膨張量が不安定になるからである。このようにして圧縮率が５％〜８０％の範囲となるように圧縮することにより、後述の工程で袋状樹脂部材に被覆された断熱部材２０を配管１０と金属管４０との間に高密度に充填でき、さらに外圧強度の向上も図ることができる。また、袋状樹脂部材に被覆された断熱部材２０の密度は、送水用断熱配管１の外径や断熱性能の設計に合わせて適宜調整することができる。 Specifically, in order to fill the heat insulating member 20 covered with the bag-shaped resin member 30 between the pipe 10 and the metal tube 40, the bag-shaped resin film 30 is decompressed after the pressure inside the bag-shaped resin film 30 is reduced. By opening the opening 35 of the bag, the sealed state of the bag-shaped resin film 30 is opened. That is, by stopping the deaeration from the opening 35 of the bag-shaped resin film 30 and introducing air from the opening 35, the interior of the bag-shaped resin film 30 is at atmospheric pressure or a predetermined pressure less than atmospheric pressure. by causing pressure recovery to the pressure, it is inflated in the thickness direction the compressed bag-like resin member insulation member 20 coated on, densified than before decompressing the density of the heat insulating member 20. More specifically, the refractory material is preferably compressed so that the compression ratio is in the range of 5% to 80% as compared with that before decompression. This is a compression ratio of 5% or less, which may result in damage to heat insulation performance or fire resistance performance due to fiber breakage, etc., if the compression ratio exceeds 80% and is compressed too much compared to before decompression. This is because the expansion amount of the heat insulating material at the time of return pressure becomes unstable. By compressing such this way the compression ratio is in the range of 5% to 80%, the heat insulating member 20 covered in a bag-shaped resin member in a later process between the pipe 10 and the metal tube 40 It can be filled with high density and the external pressure strength can be improved. The density of the bag-like resin member insulation member 20 coated on can be appropriately adjusted according to the outer diameter and the heat insulating performance of the design of the water heat insulation pipe 1.

具体的に袋状樹脂部材３０に被覆された断熱部材２０を配管１０と金属管４０との間に充満させるには、樹脂フィルム３０の開口部３５からの脱気を中止して開口部３５から空気を導入する場合に限定されない。例えばガス透過性を有する樹脂フィルムを用いれば、開口部がなくても、時間の経過により樹脂フィルムを介して断熱部材を配管と金属管との間に充満することができる。具体的には、断熱部材を配管に巻き付けた筒状部材を金属管の内部に挿入してから所定の時間が経過すれば、樹脂フィルムのガス透過性により空気が導入され減圧状態が解放することで、断熱部材を配管と金属管との間に空気を充満することができる。ガス透過性が大きい樹脂としては、ポリエチレン、ポリスチレン、ポリエチエン等を用いることができる。例えば、低密度ポリエチレン（ＬＤＰＥ）、ポリスチレン（ＰＳ）、無延伸ポリプロピレン（ＣＰＰ）、高密度ポリエチレン（ＨＤＰＥ）、二軸延伸ポリプロピレン（ＯＰＰ）等を用いる。 To fill the specific heat insulating member 20 covered in a bag-shaped resin member 30 between the pipe 10 and the metal tube 40, the opening 35 to stop the degassing from the opening 35 of the resin film 30 However, the present invention is not limited to the case of introducing air from. For example, use of a resin film having gas permeability, even without opening can be filled with heat insulating member through the resin film with the lapse of time between the pipe and the metal pipe. Specifically, if the tubular member wrapped with the insulation member in the pipe After a lapse of the predetermined time after inserted into the metal tube, the air is introduced by a gas permeable resin film vacuum state is released it is, it is possible to fill the air between the heat insulating member pipe and metal pipe. Polyethylene, polystyrene, polyethylene or the like can be used as the resin having high gas permeability. For example, low density polyethylene (LDPE), polystyrene (PS), unstretched polypropylene (CPP), high density polyethylene (HDPE), biaxially stretched polypropylene (OPP), or the like is used.

以上のようにして、上記図２〜図６を用いて説明した方法により施工される送水用断熱配管１は、断熱材の表面が樹脂フィルム層により被覆されているため、樹脂フィルム層を減圧するなどして容易に断熱部材を圧縮して、配管と金属管との間に隙間なく充填することができ、耐火性能と断熱性能とをともに高めることができる。 As mentioned above, since the surface of the heat insulating material is covered with the resin film layer, the heat-insulating piping 1 for water supply constructed by the method described with reference to FIGS. 2 to 6 depressurizes the resin film layer. and easily compressed heat insulating member and the like, between the pipe and the metal tube can be filled without a gap, it is possible to increase the fire resistance and heat insulating performance both.

また、袋状樹脂部材の内部に配置される断熱部材は、水分を吸収しても耐火性能が維持されるが、吸水により断熱性能が低下するので、上述の通り、樹脂フィルム層により防水されていることから、水分による断熱性能の低下を防止することができる。ここで、袋状樹脂部材として透湿性の低い樹脂部材を使用するか、あるいはアルミニウム箔をラミネートした袋状樹脂部材またはアルミニウムを蒸着した袋状樹脂部材を用いれば、吸湿による断熱性能の低下を防止することができる。 Further, a heat insulating member disposed inside the bag-shaped resin member is fire performance by absorbing moisture is maintained, since the heat insulating performance is lowered by water absorption, as described above, it is waterproof by the resin film layer Therefore, it is possible to prevent a decrease in heat insulation performance due to moisture. Here, if a resin member with low moisture permeability is used as the bag-shaped resin member, or a bag-shaped resin member laminated with aluminum foil or a bag-shaped resin member deposited with aluminum is used, deterioration of heat insulation performance due to moisture absorption is prevented. can do.

また、配管１０に近い側の断熱部材については、配管１０から離れた金属管４０に近い側の断熱部材に比べて耐熱温度が低い材料を用いても、断熱部材２０全体としての耐熱性能が大きく低下することはないことから、耐熱温度によらず熱伝導率が低い材料を用いることが好ましい。一方、金属管４０に近い側の断熱部材は、配管１０に近い側の断熱部材に比べて熱伝導率が高くても、耐熱温度が高い材料を用いることが好ましい。 Further, the side of the heat insulating member close to the pipe 10, even with low heat resistance material than the side of the heat insulating member closer to the metal tube 40 away from the pipe 10, the heat resistance of the entire heat insulating member 20 It is preferable to use a material having a low thermal conductivity regardless of the heat-resistant temperature because it does not greatly decrease. On the other hand, the heat insulating member closer to the metal tube 40, even at high heat conductivity than the heat insulating member closer to the pipe 10 side, it is preferable to use a heat-resistant temperature is high material.

例えば、配管１０の最も近い側に設けられるシート状断熱材２１、２２については、シート状断熱材２３〜２６と比較して、耐熱温度が低いが熱伝導率が低い材料、具体的にはポリスチレンフォーム、硬質ウレタンフォーム、フェノールフォーム、及び発泡プラスチック保温材の少なくとも１種の材料を用いる。シート状断熱材２１、２２の次に配管１０に近い側のシート状断熱材２３、２４については、シート状断熱材２５、２６と比較して、耐熱温度が低いが熱伝導率が低い材料、具体的には、ロックウール、シリカエアロジェルを含浸させたグラスウール、及びグラスウールの少なくとも１種の材料を用いる。配管１０から離れた金属管４０に近い側に設けられるシート状断熱材２５、２６については、セラミックファイバー及び生体溶解性ファイバーの少なくとも１種の材料を用いる。 For example, for the sheet-like heat insulating materials 21 and 22 provided on the closest side of the pipe 10, compared to the sheet-like heat insulating materials 23 to 26, a material having a low heat resistance but low thermal conductivity, specifically polystyrene. At least one material of foam, rigid urethane foam, phenol foam, and foamed plastic heat insulating material is used. About the sheet-like heat insulating materials 23 and 24 on the side close to the pipe 10 next to the sheet-like heat insulating materials 21 and 22, compared to the sheet-like heat insulating materials 25 and 26, a material having a low heat resistance but low thermal conductivity, Specifically, at least one material of rock wool, glass wool impregnated with silica airgel, and glass wool is used. About the sheet-like heat insulating materials 25 and 26 provided on the side close to the metal tube 40 away from the pipe 10, at least one material of ceramic fiber and biosoluble fiber is used.

このようにして、送水用断熱配管１では、上述したように、異なる材料からなる断熱部材を組み合わせることで、耐熱性能と断熱性能の両方を維持しながら、例えばシート状断熱材２１、２２のシート厚みを薄くできる。つまり、耐熱性能と断熱性能の両方を維持しながら、断熱部材２０全体の厚みを薄くすることができる。 In this way, the water heat-insulating pipe 1, as described above, by combining the heat insulating member made of different materials, while maintaining both the heat resistance and insulation performance, for example, a sheet-shaped heat insulating materials 21 and 22 Sheet thickness can be reduced. In other words, while maintaining both the heat resistance and heat insulating performance, it is possible to reduce the heat insulating member 20 overall thickness.

なお、本実施形態では、上記図２〜図６を用いて説明した方法に限らず、種々の変更が可能である。例えば、袋状の樹脂フィルム３０を配管１０に巻きつけた後に、袋状の樹脂フィルム３０の内部を減圧して袋状樹脂部材の内部の断熱部材２０を圧縮して筒状部材を準備してもよい。 In addition, in this embodiment, not only the method demonstrated using the said FIGS. 2-6, but a various change is possible. For example, after winding the bag-like resin film 30 to the pipe 10, the inside of the bag-like resin film 30 to compress the inside of the heat insulating member 20 of the bag-shaped resin member in vacuo to prepare a tubular member May be.

また、断熱部材２０を圧縮する工程については、袋状の樹脂フィルム３０の内部を減圧する場合に限らず、袋状の樹脂フィルム３０を外部から押し潰すことで断熱部材２０を圧縮してもよい。 Also, the step of compressing the heat insulating member 20 is not limited to the case of reducing the internal pressure of the bag-shaped resin film 30, even if compression of the heat insulating member 20 by squeezing the bag-like resin film 30 from the outside Good.

また、断熱部材２０を配管１０に巻き付けた筒状部材を金属管４０の内部に挿入する場合に限らず、金属管として、例えば、図７に示すように、フランジ付きの断面半円形の分割管状体５１、５２を用いてもよい。つまり、断熱部材２０を内部に含む袋状樹脂部材３０を配管１０に巻き付けた筒状部材を、上下方向からそれぞれ分割管状体５１、５２で挟み込む。そして、分割管状体５１のフランジ部５１１と分割管状体５２のフランジ部５１２とを突き合わせた状態で、ボルトとナットからなる締結部材６０で締結してもよい。このようにして分割管状体５１、５２を用いることで、例えば収縮させた袋状樹脂部材３０の内部の断熱部材２０が膨張し始めても確実に挟み込むことができる。 Further, the tubular member wrapped with the heat insulating member 20 to the pipe 10 is not limited to the case of inserting into the interior of the metal tube 40, the metal tube, for example, as shown in FIG. 7, the division of a semicircular section with a flange Tubular bodies 51 and 52 may be used. That is, sandwich the heat insulating member 20 a tubular member that the bag-shaped resin member 30 wound around the pipe 10 containing therein respectively from the upper and lower directions split tubular member 51. And you may fasten with the fastening member 60 which consists of a volt | bolt and a nut in the state which faced the flange part 511 of the division | segmentation tubular body 51, and the flange part 512 of the division | segmentation tubular body 52. FIG. In this way, by using a split tubular member 51 and 52, for example, inside of the heat insulating member 20 of the bag-shaped resin member 30 is contracted it can be sandwiched reliably be started to expand.

さらに、断熱部材２０は、配管１０と金属管４０との間に設けられていれば、袋状樹脂部材３０の他に、他の部材が介在していてもよい。例えば断熱部材２０と配管１０との間、或いは断熱部材２０と金属管４０との間に、衝撃吸収材を設けてもよい。 Further, the heat insulating member 20, be provided between the pipe 10 and the metal tube 40, in addition to the bag-shaped resin member 30, the other members may be interposed. For example between the heat insulating member 20 and the pipe 10, or between the heat insulating member 20 and the metal tube 40 may be provided with a shock absorber.

１送水用断熱配管
１０配管
２０断熱部材
２００、２１、２２、２３、２４、２５、２６シート状断熱材
２１１、２２１、２３１、２４１、２５１、２６１突き合わせ部の隙間
２０ａ内層
２０ｂ外層
３０樹脂フィルム（袋状樹脂部材）
３５開口部
４０金属管
４５ハゼ部
５０吸引装置
５１、５２分割管状体
５１１，５２１分割管状体のフランジ部
６０締結部材（ボルト、ナット） 1 of water for thermal insulation pipe 10 pipe 20 heat insulating member 200,21,22,23,24,25,26 sheet insulation material 211,221,231,241,251,261 butt portion gap 20a inner 20b outer layer 30 resin film (Bag-shaped resin member)
35 Opening portion 40 Metal tube 45 Seam portion 50 Suction device 51, 52 Split tubular body 511, 521 Flange portion of split tubular body 60 Fastening member (bolt, nut)

Claims

配管と、
前記配管の外周側に設けられた断熱部材と、
前記断熱部材を被覆して、前記断熱部材が内部に配置される袋状樹脂部材である樹脂フィルムと、
前記袋状樹脂部材に被覆された前記断熱部材の外周側に設けられた金属管と、を備え、
前記断熱部材は、複数のシート状断熱材の積層体であり、
前記シート状断熱材の両端部の突き合わせ部が円周方向の異なる位置に配置され、
複数枚のシート状断熱材が配管の外周に巻付けられ、
前記シート状断熱材の両端部の突き合わせ部の隙間からの熱侵入を緩和することができるように、前記各シート状断熱材の内周部の周長は、内周部の巻き付けに必要な長さよりも僅かに長く設定され、前記シート状断熱材の突き合わせ部が押し込まれることにより、前記シート状断熱材の両端部が断熱部材の長さ方向に圧縮されることで、圧縮部近傍の断熱材が僅かに高密度化することが可能なことを特徴とする送水用断熱配管。 Piping,
And the heat insulating member provided on an outer peripheral side of the pipe,
A resin film that is a bag-like resin member that covers the heat insulating member and in which the heat insulating member is disposed,
And a metal tube provided on the outer periphery of the heat insulating member which is coated on the bag-like resin member,
The heat insulating member is a laminate of a plurality of sheet-like insulation material,
The butted portions at both ends of the sheet-like heat insulating material are arranged at different positions in the circumferential direction,
A plurality of sheet-like heat insulating materials are wound around the outer periphery of the pipe,
The circumferential length of the inner peripheral portion of each sheet-like heat insulating material is a length necessary for winding the inner peripheral portion so that heat intrusion from the gap between the butted portions at both ends of the sheet-like heat insulating material can be reduced. Is set to be slightly longer than the length, and the both ends of the sheet-like heat insulating material are compressed in the length direction of the heat-insulating member by pressing the butt portion of the sheet-like heat insulating material, so that the heat insulating material in the vicinity of the compression portion A heat-insulating piping for water supply, characterized in that it can be slightly densified .

前記断熱部材は、５枚または６枚のシート状断熱材の突き合わせ部が円周方向の異なる位置に配置され、前記シート状断熱材の配置がシート状断熱材の枚数に応じて、それぞれ円周方向に所定の間隔で離間して巻付けられた断熱部材であることを特徴とする請求項１に記載の送水用断熱配管。 The heat insulating member has five or six sheet-like heat insulating material butts arranged at different positions in the circumferential direction, and the arrangement of the sheet-like heat insulating material is circumferential according to the number of sheet-like heat insulating materials, respectively. The heat-insulating pipe for water supply according to claim 1, wherein the heat-insulating pipe is a heat insulating member wound at a predetermined interval in the direction .

前記断熱部材に用いられる断熱材料は、
セラミックファイバー、生体溶解性ファイバー、ロックウール、シリカエアロジェルを含浸させたグラスウール、及びグラスウールのうちの少なくとも１種からなることを特徴とする請求項１または２に記載の送水用断熱配管。 Heat insulating materials are used for the heat insulating member,
The heat-insulating piping for water supply according to claim 1 or 2, comprising at least one of ceramic fiber, biosoluble fiber, rock wool, glass wool impregnated with silica airgel, and glass wool.

前記断熱部材に用いられる断熱材料は、
ロックウール、シリカエアロジェルを含浸させたグラスウール、及びグラスウールの少なくとも１種を、前記配管側に配置した第１断熱層と、
セラミックファイバー及び生体溶解性ファイバーの少なくとも１種を、前記金属管側に配置した第２断熱層と、
を有することを特徴とする請求項１〜３のいずれか一項に記載の送水用断熱配管。 Heat insulating materials are used for the heat insulating member,
Rock wool, glass wool impregnated with silica airgel, and at least one of glass wool, a first heat insulating layer disposed on the pipe side,
A second heat insulating layer in which at least one of ceramic fiber and biosoluble fiber is disposed on the metal tube side;
The heat-insulating piping for water supply according to any one of claims 1 to 3, wherein:

前記断熱部材に用いられる断熱材料は、
前記配管に最も近い側に、ポリスチレンフォーム、硬質ウレタンフォーム、フェノールフォーム、及び発泡プラスチック保温材の少なくとも１種からなる断熱層を有することを特徴とする請求項１〜４のいずれか一項に記載の送水用断熱配管。 Heat insulating materials are used for the heat insulating member,
The heat insulation layer which consists of at least 1 sort (s) of a polystyrene foam, a hard urethane foam, a phenol foam, and a foamed plastic heat insulating material is provided in the side nearest to the said piping, It is any one of Claims 1-4 characterized by the above-mentioned. Insulated piping for water supply.

前記樹脂フィルムは、
ポリエチレン、ポリプロピレン、ポリエチレンテレフタレート、ポリスチレン、ポリ塩化ビニル、ポリアミドの少なくとも１種の熱可塑樹脂からなる樹脂フィルム、又は前記樹脂フィルムにアルミニウム箔を積層したフィルムからなることを特徴とする請求項１〜５のいずれか一項に記載の送水用断熱配管。 The resin film is
6. A resin film comprising at least one thermoplastic resin of polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polyvinyl chloride and polyamide, or a film obtained by laminating an aluminum foil on the resin film. The heat insulation piping for water supply as described in any one of these.

前記配管は、ポリエチレン管、又は前記ポリエチレン管に鋼帯とポリアリレート繊維とアラミド繊維との少なくとも１種を巻き付けて形成される補強帯状体を有するポリエチレン管であることを特徴とする請求項１〜６のいずれか一項に記載の送水用断熱配管。 The pipe is a polyethylene pipe or a polyethylene pipe having a reinforcing band formed by winding at least one of steel strip, polyarylate fiber and aramid fiber around the polyethylene pipe. The heat insulation piping for water supply as described in any one of 6.

前記金属管は、
スパイラルダクト鋼管又はシームレス鋼管であることを特徴とする請求項１〜７のいずれか一項に記載の送水用断熱配管。 The metal tube is
It is a spiral duct steel pipe or a seamless steel pipe, The heat insulation piping for water supply as described in any one of Claims 1-7 characterized by the above-mentioned.

断熱部材が内部に圧縮状態で配置された樹脂フィルムからなる袋状樹脂部材により被覆された複数のシート状断熱材の積層体が配管に巻き付けられた筒状部材を、準備する第１工程と、
前記筒状部材を金属管の内部に挿入する第２工程と、
前記第２工程終了後に、前記袋状樹脂部材の内部の前記断熱部材を圧縮状態から解放させて、前記断熱部材を前記袋状樹脂部材を介して前記配管と前記金属管との間に充満させる第３工程と、を有する送水用断熱配管の施工方法であって、
前記第１工程において、
それぞれの前記シート状断熱材の両端部の突き合わせ部を円周方向の異なる位置に所定距離ずらして配置することで、シート状断熱材の両端部の突き合わせ部の隙間からの熱侵入を緩和することができるシート状断熱材の内周部の周長を内周部の巻き付けに必要な長さよりも僅かに長く設定し、シート状断熱材の突き合わせ部を押し込んでシート状断熱材の両端部を断熱シート部材の長さ方向に圧縮して、圧縮部近傍の断熱材を高密度化させることを特徴とする送水用断熱配管の施工方法。 A first step of the heat insulating member is a tubular member that is wound around the stack of a plurality of sheet-like heat insulating material coated with a bag-shaped resin member comprising a resin film disposed in a compressed state inside the pipe, prepared ,
A second step of inserting the cylindrical member into the metal tube;
After the second step is completed, the inside of the bag-like resin member by releasing the heat insulating member from the compressed state, filling said heat insulating member between the metal pipe and the pipe through the bag-like resin member a third step and the water supply for the heat insulating pipe construction method that having a to be,
In the first step,
By mitigating the heat intrusion from the gap between the butted portions of both end portions of the sheet-like heat insulating material by disposing the butted portions of both end portions of the respective sheet-like heat insulating materials at different positions in the circumferential direction by shifting by a predetermined distance. Set the peripheral length of the inner periphery of the sheet-like heat insulating material to be slightly longer than the length required for winding the inner peripheral portion, and insulate both ends of the sheet-like heat insulating material by pushing in the butted portions of the sheet-like heat insulating material The construction method of the heat insulation piping for water supply characterized by compressing to the length direction of a sheet | seat member and densifying the heat insulating material of the compression part vicinity .

前記断熱部材は、５枚または６枚のシート状断熱材の突き合わせ部が円周方向の異なる位置に、前記シート状断熱材の枚数に応じて、所定の間隔で離間して配置されるように配管に巻付けられることを特徴とする請求項９に記載の送水用断熱配管の施工方法。 The heat insulating member is arranged so that the butted portions of the five or six sheet-like heat insulating materials are spaced apart at predetermined intervals according to the number of the sheet-like heat insulating materials at different positions in the circumferential direction. The construction method of the heat-insulating piping for water supply according to claim 9, wherein the construction method is wound around the piping .

前記第１工程は、
前記断熱部材が挿入された前記袋状樹脂部材の内部を減圧して前記断熱部材を圧縮する工程と、
前記断熱部材を圧縮した後に、前記袋状樹脂部材を前記配管に巻きつけて、前記筒状部材を準備する工程と、
を有することを特徴とする請求項９または１０に記載の送水用断熱配管の施工方法。 The first step includes
A step of compressing the insulating member inside of the bag-like resin member in which the heat insulating member is inserted in vacuo,
Wherein after the heat insulating member is compressed, wrapped the bag-like resin member in the pipe, a step of preparing the tubular member,
The construction method of the heat insulation piping for water supply of Claim 9 or 10 characterized by the above-mentioned.

前記第１工程は、
前記断熱部材が装入された前記袋状樹脂部材を前記配管に巻きつける工程と、
前記袋状樹脂部材を前記配管に巻きつけた後に、前記袋状樹脂部材の内部を減圧して前記断熱部材を圧縮して、前記筒状部材を準備する工程と、
を有することを特徴とする請求項９または１０に記載の送水用断熱配管の施工方法。 The first step includes
A step of winding the bag-like resin member in which the heat insulating member is charged to the pipe,
After winding the bag-shaped resin member around the pipe, depressurizing the inside of the bag-shaped resin member to compress the heat insulating member, and preparing the cylindrical member;
Water for thermal insulation Piping construction according to claim 9 or 10, wherein a.

前記第１工程では、前記袋状樹脂部材を外部から押し潰すことで前記断熱部材を圧縮することを特徴とする請求項９または１０に記載の送水用断熱配管の施工方法。 In the first step, water feeding insulation Piping construction according to claim 9 or 10, characterized in that compressing the heat insulating member by squeezing the bag-like resin member from the outside.

前記第１工程では、前記袋状樹脂部材の内部を減圧後に、前記袋状樹脂部材が有する開口部を閉塞することで、圧縮された断熱部材を袋状樹脂部材の内部に密閉し、
前記第３工程では、前記袋状樹脂部材が有する開口部を開放することで、前記袋状樹脂部材の密閉状態を開封して、前記断熱部材を前記袋状樹脂部材を介して前記配管と金属管との間に充満させることを特徴とする請求項９または請求項１０に記載の送水用断熱配管の施工方法。 In the first step, the inside of the bag-like resin member after decompression, by closing the opening with said bag-like resin member, the compressed thermal insulating member is sealed into the pouch-like resin member,
Wherein in the third step, by opening an opening having said bag-like resin member, by opening the sealed state of the bag-like resin member, and the pipe through the bag-like resin member said heat insulating member It fills between metal pipes, The construction method of the heat insulation piping for water supply of Claim 9 or Claim 10 characterized by the above-mentioned.

前記第１工程では、前記袋状樹脂部材の内部を脱気して減圧することで、前記断熱部材を厚さ方向に圧縮し、
前記第３工程では、前記袋状樹脂部材の開口部からの脱気を中止して、開口部から空気を導入することで、前記袋状樹脂部材の内部を大気圧、あるいは大気圧未満の所定圧力に復圧させることで、前記圧縮された断熱部材を厚さ方向に膨張させて、前記断熱部材の密度を減圧前の断熱材密度より高密度化することを特徴とする請求項９または１０に記載の送水用断熱配管の施工方法。 In the first step, reducing the pressure by degassing the inside of the bag-like resin member, compressing the heat insulating member in a thickness direction,
In the third step, the degassing from the opening of the bag-shaped resin member is stopped, and air is introduced from the opening, so that the interior of the bag-shaped resin member is at a predetermined atmospheric pressure or less than atmospheric pressure. claims in Rukoto was pressurized condensate to the pressure, thereby expanding the compressed heat insulation member in the thickness direction, characterized by a density of the heat insulating member to be densified than insulation material density before vacuum The construction method of the heat insulation piping for water supply of 9 or 10 .

前記第１工程では袋状樹脂部材内を脱気しながら減圧して、前記袋状樹脂部材の減圧状態を保持することで、前記断熱部材を厚さ方向に圧縮した前記筒状部材を金属管の内部に挿入し、前記第３工程では、前記袋状樹脂部材の開口部からの脱気を中止して、開口部から空気を導入することで、前記袋状樹脂部材の内部を大気圧、あるいは大気圧未満の所定圧力に復圧させて、前記圧縮された断熱部材を厚さ方向に膨張させ、前記断熱部材の密度を減圧前の断熱材密度より高密度化することを特徴とする請求項９または１０に記載の送水用断熱配管の施工方法。In the first step, the bag-shaped resin member is depressurized while being degassed, and the pressure-reduced state of the bag-shaped resin member is maintained, whereby the cylindrical member obtained by compressing the heat insulating member in the thickness direction is replaced with a metal tube. In the third step, the degassing from the opening of the bag-shaped resin member is stopped, and air is introduced from the opening, so that the inside of the bag-shaped resin member is at atmospheric pressure, Alternatively, the pressure is restored to a predetermined pressure lower than atmospheric pressure, the compressed heat insulating member is expanded in the thickness direction, and the density of the heat insulating member is made higher than the density of the heat insulating material before decompression. Item 11. A method for constructing a heat-insulating piping for water supply according to Item 9 or 10.

前記第２工程終了後に、前記袋状樹脂部材の密閉状態のまま、前記袋状樹脂部材のガス透過性を利用して、前記袋状樹脂部材の内部に空気を浸透させて、前記配管と前記金属管との間の前記袋状樹脂部材の内部に配置された断熱部材に空気を充満させる第３工程と、を有する請求項９または１０に記載の送水用断熱配管の施工方法。After the second step, the bag-shaped resin member is kept in a sealed state by using the gas permeability of the bag-shaped resin member to allow air to penetrate into the bag-shaped resin member, The construction method of the heat insulation piping for water supply of Claim 9 or 10 which has a 3rd process which fills the heat insulation member arrange | positioned inside the said bag-shaped resin member between metal pipes with air.