JP2008151448A - Heat storage device - Google Patents

Heat storage device Download PDF

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JP2008151448A
JP2008151448A JP2006341334A JP2006341334A JP2008151448A JP 2008151448 A JP2008151448 A JP 2008151448A JP 2006341334 A JP2006341334 A JP 2006341334A JP 2006341334 A JP2006341334 A JP 2006341334A JP 2008151448 A JP2008151448 A JP 2008151448A
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heat transfer
heat
heat storage
transfer tube
electric heaters
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Kenji Machizawa
健司 町澤
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Hitachi Building Systems Co Ltd
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Hitachi Building Systems Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat storage device attaining efficient heat storage into a heat storage material by heating of electric heaters, and efficient transfer of heat stored in the heat storage material to heat media in heat transfer tubes. <P>SOLUTION: The heat storage device comprises two kinds of first and second heat transfer tubes 3, 4 of coil shape with different diameters, and two kinds of first and second electric heaters 8, 9 of U-shape with different bend radii. These first and second electric heaters 8, 9 are radially arranged at predetermined angle intervals. The first electric heaters 8 with the large bend radii are arranged to sandwich the second heat transfer tubes 4 located inside and the first heat transfer tubes 3 located outside, and the second electric heaters 9 with the small bend radii are arranged to sandwich the first heat transfer tubes 3 located outside and to be located between the adjoining first electric heaters 8 with the large bend radii. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、深夜電力などの余剰電力が活用される蓄熱装置に関するものである。   The present invention relates to a heat storage device that uses surplus power such as midnight power.

従来、昼間と深夜の電力負荷の違いを平準化するために深夜電力を動力源として利用する蓄熱装置として、蓄熱材が充填された蓄熱層内に伝熱管および電熱ヒータを配置し、深夜、電熱ヒータに電力を投入して蓄熱材に蓄熱しておき、昼の出熱運転時に、前述の蓄熱装置の伝熱管内に熱媒体を流すことにより熱媒体を加熱して高温の熱媒体および蒸気を生成し、これらを熱負荷に供給するものが知られている（特許文献１参照）。   Conventionally, as a heat storage device that uses midnight power as a power source to level out the difference between daytime and midnight power loads, heat transfer tubes and electric heaters have been placed in the heat storage layer filled with heat storage materials, Electric power is supplied to the heater to store heat in the heat storage material, and during the heat output operation in the daytime, the heat medium is heated by flowing the heat medium into the heat transfer tube of the above-described heat storage device so that the high-temperature heat medium and steam are What produces | generates and supplies these to a thermal load is known (refer patent document 1).

また、伝熱管をコイル状にしたものや直径の異なる２種類のコイル状の伝熱管を同芯状に配置したものが提案されている（特許文献２参照）。
特開２０００−２９２０８４公報 特開２００２−３２３２９３公報 Further, there have been proposed ones in which the heat transfer tubes are coiled or two types of coiled heat transfer tubes having different diameters arranged concentrically (see Patent Document 2).
JP 2000-292084 A JP 2002-323293 A

しかし、上記の従来技術においては、伝熱管と電熱ヒータとの相関位置関係に関しては考慮されておらず、電熱ヒータの加熱による蓄熱材への蓄熱、蓄熱材からの熱による伝熱管の熱媒体への加熱が効率良く行われない虞がある。   However, in the above-described conventional technology, the correlation between the heat transfer tube and the electric heater is not considered, and heat storage to the heat storage material by heating of the electric heater, to the heat transfer tube heat medium by heat from the heat storage material There is a possibility that the heating of the above is not performed efficiently.

本発明は、このような従来技術における実状からなされたもので、その目的は、電熱ヒータの加熱による蓄熱材への効率の良い蓄熱、および蓄熱材に蓄えられた熱の伝熱管内の熱媒体への効率の良い伝達を実現させることができる蓄熱装置を提供することにある。   The present invention has been made from such a state of the art, and the purpose thereof is to efficiently store heat in the heat storage material by heating the electric heater, and the heat medium in the heat transfer tube of heat stored in the heat storage material It is in providing the heat storage apparatus which can implement | achieve efficient transmission to.

この目的を達成するために、蓄熱材が充填された蓄熱容器内に複数の伝熱管および複数の電熱ヒータを配置し、前記伝熱管のそれぞれに熱媒体を流すことにより、この熱媒体を加熱して高温の熱媒体および蒸気を生成し、これらを熱負荷に供給する蓄熱装置において、前記伝熱管が少なくとも２種類の直径の異なるコイル状のものを含み、前記電熱ヒータがＵ字形であって、湾曲部の半径の異なる２種類のものを含むととともに、これらの各電熱ヒータは所定の角度間隔で放射状に配列され、前記湾曲部半径の大きい電熱ヒータは内側および外側に位置する伝熱管を挟むように配列され、前記湾曲部半径の小さい電熱ヒータは外側に位置する伝熱管を挟み、しかも隣り合う前記湾曲部半径の大きい電熱ヒータの間の位置に配列されていることを特徴としている。   In order to achieve this object, a plurality of heat transfer tubes and a plurality of electric heaters are arranged in a heat storage container filled with a heat storage material, and the heat medium is heated by flowing the heat medium through each of the heat transfer tubes. In a heat storage device that generates a high-temperature heat medium and steam and supplies them to a heat load, the heat transfer tube includes at least two types of coils having different diameters, and the electric heater is U-shaped, The electric heaters include two types having different radiuses of the curved portion, and these electric heaters are arranged radially at a predetermined angular interval, and the electric heater having the large radius of the curved portion sandwiches the heat transfer tubes located inside and outside. The electric heaters with a small radius of the curved portion are arranged between the adjacent electric heaters with a large radius of the curved portion, sandwiching a heat transfer tube located outside. It is characterized.

このように構成した本発明は、上述のように、これらの各電熱ヒータは所定の角度間隔で放射状に配列され、湾曲部半径の大きい電熱ヒータは内側および外側に位置する伝熱管を挟むように配列され、湾曲部半径の小さい電熱ヒータは外側に位置する伝熱管を挟み、しかも隣り合う前記湾曲部半径の大きい電熱ヒータの間の位置に配列されていることから、蓄熱に有効な空間、すなわち蓄熱容器内の蓄熱材の充填された領域に電熱ヒータ、伝熱管をほぼ均一に分布させることができ、電熱ヒータから蓄熱材への蓄熱、蓄熱材から伝熱管内の熱媒体への熱伝達を効率良く行うことができる。また、Ｕ字形の電熱ヒータは規則的な配列であるから、位置決めも簡単で、組み立てが容易である。   In the present invention configured as described above, as described above, each of the electric heaters is arranged radially at a predetermined angular interval, and the electric heater having a large radius of curvature sandwiches the heat transfer tubes located inside and outside. The electric heaters arranged and having a small radius of curvature sandwich the heat transfer tubes located outside, and are arranged at positions between the adjacent electric heaters having a large radius of curvature, so that an effective space for heat storage, that is, The electric heaters and heat transfer tubes can be distributed almost uniformly in the region filled with the heat storage material in the heat storage container, and heat transfer from the electric heater to the heat storage material and heat transfer from the heat storage material to the heat medium in the heat transfer tube can be performed. It can be done efficiently. Further, since the U-shaped electric heaters are regularly arranged, positioning is easy and assembly is easy.

また、本発明は前記発明において、前記内側に位置する伝熱管の端部と前記外側に位置する伝熱管の端部とは、互いに連絡されており、被加熱熱媒体の入口は、内側に位置する伝熱管に形成され、被加熱熱媒体の出口は、外側に位置する伝熱管に形成されることを特徴としている。   In the present invention, the end of the heat transfer tube located on the inner side and the end of the heat transfer tube located on the outer side are in communication with each other, and the inlet of the heated heat medium is located on the inner side. The outlet of the heating medium to be heated is formed in a heat transfer tube located outside.

本発明は、伝熱管が少なくとも２種類の直径の異なるコイル状のものを含み、電熱ヒータがＵ字形であって、湾曲部の半径の異なる２種類のものを含むととともに、これらの各電熱ヒータは所定の角度間隔で放射状に配列され、湾曲部半径の大きい電熱ヒータは内側および外側に位置する伝熱管を挟むように配列され、湾曲部半径の小さい電熱ヒータは外側に位置する伝熱管を挟み、しかも隣り合う湾曲部半径の大きい電熱ヒータの間の位置に配列されるように構成にしてあるので、電熱ヒータの加熱による蓄熱材への効率の良い蓄熱、および蓄熱材に蓄えられた熱の伝熱管内の熱媒体への効率の良い伝達を実現させることができ、従来よりも高い信頼性を確保することができる。また、Ｕ字形の電熱ヒータは規則的な配列であるから、位置決めも簡単で、組み立てが容易にでき、したがって、高効率、高精度な蓄熱装置を実現できる。   The present invention includes at least two types of coiled tubes having different diameters, an electric heater having a U-shape and two types having different radii of curved portions, and each of these electric heaters. Are arranged radially at predetermined angular intervals, the electric heaters having a large radius of curvature are arranged to sandwich the heat transfer tubes located inside and outside, and the electric heaters having a small radius of curvature sandwich the heat transfer tubes located outside. In addition, since it is configured to be arranged at a position between adjacent electric heaters having a large radius of the curved portion, efficient heat storage to the heat storage material by heating of the electric heater, and heat stored in the heat storage material Efficient transmission to the heat medium in the heat transfer tube can be realized, and higher reliability than before can be ensured. In addition, since the U-shaped electric heaters are regularly arranged, positioning is easy and assembly is easy, so that a highly efficient and highly accurate heat storage device can be realized.

以下、本発明に係る蓄熱装置を実施するための最良の形態を図に基づいて説明する。   Hereinafter, the best mode for carrying out a heat storage device according to the present invention will be described with reference to the drawings.

［本実施形態の構成］
図１は、本発明に係る蓄熱装置の一実施形態を示す縦断面図、図２は、本実施形態の平面図、図３は、図１のＢ−Ｂ矢視に相応する断面図、図４は、図３の要部拡大図である。図５は、本実施形態に備えられる伝熱管を示す平面図、図６は、図５に示す伝熱管の正面図、図７は、本実施形態に備えられる結束用針金の装着部の要部拡大図、図８は、図６に示す結束用針金の装着部の要部拡大図、図９は、本実施形態に備えられる上方間隔保持板の取り付け部の要部拡大縦断面図である。図１０は、本実施形態に備えられる電熱ヒータの正面図である。 [Configuration of this embodiment]
FIG. 1 is a longitudinal sectional view showing an embodiment of a heat storage device according to the present invention, FIG. 2 is a plan view of the present embodiment, and FIG. 3 is a sectional view corresponding to the arrow BB in FIG. 4 is an enlarged view of a main part of FIG. 5 is a plan view showing a heat transfer tube provided in the present embodiment, FIG. 6 is a front view of the heat transfer tube shown in FIG. 5, and FIG. 7 is a main part of a binding wire mounting portion provided in the present embodiment. FIG. 8 is an enlarged view of the main part of the attaching part of the binding wire shown in FIG. 6, and FIG. 9 is an enlarged longitudinal sectional view of the main part of the attaching part of the upper spacing plate provided in the present embodiment. FIG. 10 is a front view of an electric heater provided in the present embodiment.

本実施形態は、図１および図２に示すように、底付きで水平断面の輪郭が正方形であり、円形の筒状をした蓄熱容器１と、この蓄熱容器１を塞ぐ蓋（図示省略）を備えている。また、伝熱管が少なくとも２種類の直径の異なるコイル状のものを含んでいる。例えば、蓄熱容器１内に設置し、直径が蓄熱容器１の対向辺の距離より若干小さく、高さが蓄熱容器１の高さより少し低いコイル状に巻いた外側に位置する伝熱管、すなわち第１伝熱管３と、直径が第１伝熱管３より小さく、例えば、０．６倍前後で高さが同程度であり、コイル状に巻かれ、図３に示すように、その入口部４Ａが第１伝熱管３の出口部３Ｂに接続された内側に位置する伝熱管である第２伝熱管４とを備えている。すなわち、内側に位置する第２伝熱管４の端部と外側に位置する第１伝熱管３の端部とは、互いに連絡されており、被加熱熱媒体の入口部４Ａは、内側に位置する第２伝熱管４に形成され、被加熱熱媒体の出口部３Ｂは、外側に位置する第１伝熱管３に形成されている。   In this embodiment, as shown in FIGS. 1 and 2, a heat storage container 1 having a bottom and a horizontal cross section having a square shape and having a circular cylindrical shape and a lid (not shown) for closing the heat storage container 1 are provided. I have. The heat transfer tube includes at least two types of coils having different diameters. For example, a heat transfer tube that is installed in the heat storage container 1 and is located on the outside wound in a coil shape whose diameter is slightly smaller than the distance between the opposing sides of the heat storage container 1 and whose height is slightly lower than the height of the heat storage container 1, that is, first The diameter of the heat transfer tube 3 is smaller than that of the first heat transfer tube 3, for example, about 0.6 times the same height, wound in a coil shape, and as shown in FIG. The 1st heat exchanger tube 3 is provided with the 2nd heat exchanger tube 4 which is the heat exchanger tube located in the inside connected to outlet 3B. That is, the end portion of the second heat transfer tube 4 located on the inside and the end portion of the first heat transfer tube 3 located on the outside are in communication with each other, and the inlet portion 4A of the heating medium to be heated is located on the inside. The outlet part 3B of the heating medium to be heated is formed in the first heat transfer pipe 3 located outside the second heat transfer pipe 4.

さらに、第１伝熱管３のピッチに対応した間隔で、図７に示す凹部５Ａを一方に形成し、長手方向に所定間隔で孔５Ｂを有し、第１伝熱管３の外側に凹部５Ａが当接されるプレート状の第１管ガイド５と、第２伝熱管４のピッチに対応した間隔で凹部６Ａを一方に形成し、長手方向に所定間隔で孔６Ｂを有し、第２伝熱管４の内側に凹部６Ａが当接されるプレート状の第２管ガイド６と、図７、８に示すように、第１ガイド５の孔５Ｂと第２ガイド６の孔６Ｂの間に装着される結束用針金７を備えている。   Furthermore, the recess 5A shown in FIG. 7 is formed on one side at intervals corresponding to the pitch of the first heat transfer tubes 3, and the holes 5B are formed at predetermined intervals in the longitudinal direction. The recesses 5A are formed outside the first heat transfer tubes 3. A recess 6A is formed on one side at intervals corresponding to the pitch of the plate-shaped first tube guide 5 and the second heat transfer tube 4 to be contacted, and holes 6B are formed at predetermined intervals in the longitudinal direction. 4 and the plate-like second tube guide 6 with which the recess 6A is in contact with the inside, and as shown in FIGS. 7 and 8, it is mounted between the hole 5B of the first guide 5 and the hole 6B of the second guide 6. A binding wire 7 is provided.

また、図１０に示すようにＵ字型をしており、両端の間隔が第１伝熱管３と第２伝熱管４よりも大きい、すなわち図４に示す湾曲部８Ｃの半径が大きい第１電熱ヒータ８と、この第１電熱ヒータ８と同じＵ字型をしており、湾曲部９Ｃの半径が第１電熱ヒータ８の湾曲部８Ｃの半径より小さい第２電熱ヒータ９を備えている。なお、図４に示すように後述する外ヒータサポート板１１Ａの収容孔１１Ｈに挿入される第１電熱ヒータ８の直線部８Ａと、後述する内ヒータサポート板１１Ｃの収容孔１１Ｈに挿入される第１電熱ヒータ８の直線部８Ｂの間隔は、第１伝熱管３と第２伝熱管４との距離よりも大きく設定され、第２電熱ヒータ９の直線部９Ａと直線部９Ｂの間隔は、第１伝熱管３と第２伝熱管４の距離と同程度に設定してある。さらに、図１、２に示すように複数の第１、第２電熱ヒータ８、９の相対角度を一定に保持するための収容孔１０Ａ、１０Ｂ、１０Ｃと、図６に示すように第１伝熱管３の入口部３Ａと第２伝熱管４の出口部４Ｂを挿入する伝熱管収容孔１０Ｄと、中心部に形成される円形開口１０Ｅと、角部に形成される三角形開口１０Ｆとが設けられ、正方形の図９に示す上方間隔保持板１０を備えている。   Further, the first electric heat is U-shaped as shown in FIG. 10, and the distance between both ends is larger than that of the first heat transfer tube 3 and the second heat transfer tube 4, that is, the radius of the curved portion 8C shown in FIG. The heater 8 has the same U shape as the first electric heater 8, and includes a second electric heater 9 in which the radius of the curved portion 9 </ b> C is smaller than the radius of the curved portion 8 </ b> C of the first electric heater 8. In addition, as shown in FIG. 4, the linear portion 8A of the first electric heater 8 inserted into the receiving hole 11H of the outer heater support plate 11A described later and the first insertion hole 11H inserted into the receiving hole 11H of the inner heater support plate 11C described later. The interval between the linear portions 8B of the first electric heater 8 is set larger than the distance between the first heat transfer tube 3 and the second heat transfer tube 4, and the interval between the linear portions 9A and 9B of the second electric heater 9 is The distance is set to be approximately equal to the distance between the first heat transfer tube 3 and the second heat transfer tube 4. Further, as shown in FIGS. 1 and 2, the housing holes 10A, 10B and 10C for keeping the relative angles of the plurality of first and second electric heaters 8 and 9 constant, and the first transmission as shown in FIG. A heat transfer tube housing hole 10D into which the inlet 3A of the heat tube 3 and the outlet 4B of the second heat transfer tube 4 are inserted, a circular opening 10E formed in the center, and a triangular opening 10F formed in the corner are provided. The upper spacing holding plate 10 shown in FIG. 9 is provided.

また、図４に示す等角度間隔に形成された第１、第２電熱ヒータ８、９の収容孔１１Ｈを有し、図３に示すように最外方に位置し、４分割されている外ヒータサポート板１１Ａと、中間に位置する中ヒータサポート板１１Ｂと、最内方に位置する内ヒータサポート１１Ｃの３種類のリング状をした直径の異なるヒータサポート板１１を備えている。さらに、蓄熱容器１および蓋（図示省略）の外周面に貼り付けられた断熱材（図示省略）と、蓄熱容器１内に充填された蓄熱材１２を備えている。   Moreover, it has the accommodation holes 11H of the first and second electric heaters 8 and 9 formed at equiangular intervals as shown in FIG. 4, and is located on the outermost side as shown in FIG. The heater support plate 11A is provided with three types of ring-shaped heater support plates 11 of a heater support plate 11A, an intermediate heater support plate 11B positioned in the middle, and an inner heater support 11C positioned at the innermost side. Furthermore, the thermal storage container 1 and the heat insulating material (illustration omitted) affixed on the outer peripheral surface of a lid | cover (illustration omitted) and the thermal storage material 12 with which the thermal storage container 1 was filled are provided.

本実施形態では、充填されている蓄熱材１２がマグネシアやアルミナ等の粒子から成っている。   In this embodiment, the heat storage material 12 filled is made of particles such as magnesia and alumina.

また、上述の第１電熱ヒータ８と第２電熱ヒータ９の配列は、上述した上方間隔保持板１０と３種類の外ヒータサポート板１１Ａ、中ヒータサポート板１１Ｂ、内ヒータサポート１１Ｃによって決定される。そして、第１電熱ヒータ８の直線部８Ａを外ヒータサポート板１１Ａの収容孔１１Ｈに挿入し、直線部８Ｂを中ヒータサポート板１１Ｂの収容孔１１Ｈに挿入する。これによって、第１電熱ヒータ８の直線部８Ａが第１伝熱管３の外側に位置し、直線部８Ｂが第２伝熱管４の内側に位置し、また、第２電熱ヒータ９の直線部９Ａが第１伝熱管３の外側に位置し、直線部９Ｂが第１伝熱管３と第２伝熱管４との間、すなわち第１伝熱管３の内側で第２伝熱管４の外側に位置する。これによって、第１電熱ヒータ８と第２電熱ヒータ９とが交互に所定の角度間隔で放射状に放射状に配置される。また、湾曲部半径の大きい第１電熱ヒータ８は内側および外側に位置する第１伝熱管３及び第２伝熱管４を挟むように配列され、湾曲部半径の小さい第２電熱ヒータ９は外側に位置する第１伝熱管３を挟み、しかも隣り合う前述の湾曲部半径の大きい第１電熱ヒータ８の間の位置に配列される。   Further, the arrangement of the first electric heater 8 and the second electric heater 9 is determined by the above-described upper gap holding plate 10 and the three types of outer heater support plate 11A, middle heater support plate 11B, and inner heater support 11C. . Then, the straight portion 8A of the first electric heater 8 is inserted into the accommodation hole 11H of the outer heater support plate 11A, and the straight portion 8B is inserted into the accommodation hole 11H of the middle heater support plate 11B. As a result, the straight portion 8A of the first electric heater 8 is located outside the first heat transfer tube 3, the straight portion 8B is located inside the second heat transfer tube 4, and the straight portion 9A of the second electric heater 9 is provided. Is located outside the first heat transfer tube 3, and the straight portion 9B is located between the first heat transfer tube 3 and the second heat transfer tube 4, that is, inside the first heat transfer tube 3 and outside the second heat transfer tube 4. . As a result, the first electric heater 8 and the second electric heater 9 are alternately arranged radially at predetermined angular intervals. The first electric heater 8 having a large radius of the curved portion is arranged so as to sandwich the first heat transfer tube 3 and the second heat transfer tube 4 positioned on the inner side and the outer side, and the second electric heater 9 having a small radius of the curved portion is disposed on the outer side. The first heat transfer tubes 3 are sandwiched between the first electric heaters 8 that are adjacent to each other and have a large radius of curvature.

［本実施形態の蓄熱槽の組み立て動作］
図１１は、本実施形態の蓄熱装置の組み立て途中の状態を示す図で、特に伝熱管ブロックを組み立てた後、この伝熱管ブロックに含まれる伝熱管の出入口部を上方間隔保持板の孔に挿入した状態を示す図、図１２は、本実施形態の蓄熱装置の組み立て途中の状態を示す図で、図１１の状態に組み立てた後、伝熱管ブロックに電熱ヒータを組み込む様子を示す図である。 [Assembly operation of heat storage tank of this embodiment]
FIG. 11 is a diagram showing a state during the assembly of the heat storage device of the present embodiment, and in particular, after assembling the heat transfer tube block, the inlet / outlet portion of the heat transfer tube included in the heat transfer tube block is inserted into the hole of the upper spacing plate. FIG. 12 is a diagram illustrating a state in the middle of the assembly of the heat storage device of the present embodiment. FIG. 12 is a diagram illustrating a state in which the electric heater is assembled in the heat transfer tube block after being assembled in the state of FIG.

本実施形態の蓄熱装置の組み立てにおいては、まず、図１１に示す四角筒をした治具１３に上方間隔保持板１０を上下反対向き、すなわち据付時と上下が反対の向きに配置し、支持台１４上に載置する。次に、図７に示すように、第１伝熱管３の中に第２伝熱管４を位置させ、第１伝熱管３の外側に第１管ガイド５の凹部５Ａを当接し、第２管ガイド４の内側に第２管ガイド６の凹部６Ａを当接した状態で、第１管ガイド５の孔５Ｂと第２管ガイド６の孔６Ｂに針金７を通して、結束する。なお、この第１管ガイド５と第２管ガイド６の結束は、図６に示すように第１、第２管ガイド５、６の長手方向に３ヶ所、これを円周方向の１２０度間隔に設けられた第１、第２管ガイド５、６の３ヶ所（図示省略）の合計９ヶ所について行われる。これによって、第１伝熱管３の中に第２伝熱管４を位置させ、第１、第２伝熱管３、４の相対位置関係および第１、第２伝熱管３、４それぞれの上下方向の間隔を維持した伝熱管ブロック２０が組み立てられる。なお、ヒータサポート板１１も第１、第２伝熱管３、４に結束しておく。   In the assembly of the heat storage device of the present embodiment, first, the upper interval holding plate 10 is arranged in the upside down direction on the jig 13 having the rectangular tube shown in FIG. 14 is mounted. Next, as shown in FIG. 7, the second heat transfer tube 4 is positioned in the first heat transfer tube 3, the recess 5 </ b> A of the first tube guide 5 is brought into contact with the outside of the first heat transfer tube 3, and the second tube In a state where the concave portion 6 </ b> A of the second tube guide 6 is in contact with the inside of the guide 4, the wire 7 is bundled through the hole 5 </ b> B of the first tube guide 5 and the hole 6 </ b> B of the second tube guide 6. The first tube guide 5 and the second tube guide 6 are bundled at three locations in the longitudinal direction of the first and second tube guides 5 and 6, as shown in FIG. This is performed for a total of nine locations (not shown) of the first and second tube guides 5 and 6 provided in the above. As a result, the second heat transfer tube 4 is positioned in the first heat transfer tube 3, and the relative positional relationship between the first and second heat transfer tubes 3, 4 and the vertical direction of the first and second heat transfer tubes 3, 4 are respectively determined. The heat transfer tube block 20 maintaining the interval is assembled. The heater support plate 11 is also bound to the first and second heat transfer tubes 3 and 4.

前述の伝熱管ブロック２０が組み立てられた後、図１１に示すように、この伝熱管ブロック２０を上下反対向きに吊り、少しずつ下降させながら第１伝熱管３の入口部３Ａと、第２伝熱管４の出口部４Ｂを前述の上方間隔保持板１０の孔１０Ｄに挿入する。
この状態を保持したまま、図１２に示すように、上下反対向きにした第１伝熱ヒータ８の直線部８Ａを図４に示す外ヒータサポート板１１Ａの孔１１Ｈ、直線部８Ｂを内ヒータサポート板１１Ｃの孔１１Ｈにそれぞれ通す。その後、第１電熱ヒータ８の湾曲部８Ｃを上に位置し、第１、第２伝熱管３、４を第１電熱ヒータ８の直線部８Ａ、８Ｂで挟んだ状態で下降させる。そして、図１２に示す上方間隔保持板１０の孔１０Ａ、１０Ｃに挿入する。これらの作業を１２本の第１電熱ヒータ８について行う。次に、外ヒータサポート板１１Ａ、内ヒータサポート板１１Ｃと上述の各第１伝熱ヒータ８とを、針金等により結束する。さらに、上方間隔保持板１０の孔１０Ｃに挿入された第１電熱ヒータ８の直線部８Ｂと上方間隔保持板１０とを点付け溶接により結合する。 After the above-described heat transfer tube block 20 is assembled, as shown in FIG. 11, the heat transfer tube block 20 is suspended in the upside down direction and gradually lowered while being gradually lowered, and the second heat transfer tube 3A. The outlet 4B of the heat tube 4 is inserted into the hole 10D of the above-described upper spacing plate 10.
While maintaining this state, as shown in FIG. 12, the straight portion 8A of the first heat transfer heater 8 turned upside down is provided with the hole 11H and the straight portion 8B of the outer heater support plate 11A shown in FIG. It passes through the holes 11H of the plate 11C. Thereafter, the curved portion 8C of the first electric heater 8 is positioned upward, and the first and second heat transfer tubes 3 and 4 are lowered while being sandwiched between the straight portions 8A and 8B of the first electric heater 8. And it inserts in hole 10A, 10C of the upper space | interval holding | maintenance board 10 shown in FIG. These operations are performed on the 12 first electric heaters 8. Next, the outer heater support plate 11A, the inner heater support plate 11C, and each of the first heat transfer heaters 8 described above are bound by a wire or the like. Further, the straight portion 8B of the first electric heater 8 inserted into the hole 10C of the upper spacing plate 10 and the upper spacing plate 10 are joined by spot welding.

また、上述の第１電熱ヒータ８の場合と同様に、上下反対向きにした第２電熱ヒータ９の直線部９Ａを図４に示す外ヒータサポート板１１Ａの孔１１Ｈ、直線部９Ｂを中ヒータサポート板１１Ｂの孔１１Ｈにそれぞれ通す。その後、第２電熱ヒータ９の湾曲部９Ｃを上に位置し、第１、第２伝熱管３、４を第１電熱ヒータ９の直線部９Ａ、９Ｂで挟んだ状態で下降させる。そして、上方間隔保持板１０の孔１０Ａ、１０Ｃに挿入する。これらの作業を１２本の第２電熱ヒータ９について行う。次に、外ヒータサポート板１１Ａ、中ヒータサポート板１１Ｂと上述の各第２伝熱ヒータ９とを、針金等により結束する。さらに、上方間隔保持板１０の図２に示す孔１０Ｂに挿入された第２電熱ヒータ９の直線部９Ｂと上方間隔保持板１０とを点付け溶接により結合する。   Similarly to the case of the first electric heater 8 described above, the straight portion 9A of the second electric heater 9 turned upside down is provided with the hole 11H of the outer heater support plate 11A and the straight portion 9B shown in FIG. It passes through the holes 11H of the plate 11B. Thereafter, the curved portion 9C of the second electric heater 9 is positioned upward, and the first and second heat transfer tubes 3 and 4 are lowered while being sandwiched between the linear portions 9A and 9B of the first electric heater 9. Then, it is inserted into the holes 10 </ b> A and 10 </ b> C of the upper spacing plate 10. These operations are performed on the 12 second electric heaters 9. Next, the outer heater support plate 11A, the middle heater support plate 11B, and each of the second heat transfer heaters 9 are bound by a wire or the like. Further, the linear portion 9B of the second electric heater 9 inserted into the hole 10B shown in FIG. 2 of the upper spacing plate 10 and the upper spacing plate 10 are joined by spot welding.

この状態において、第１、２電熱ヒータ８、９の上下方向の捩れの有無を確認する。これによって、捩れがある場合には、これを修正した後に、各第１、第２電熱ヒータ８、９の直線部８Ａ、９Ａと上方間隔保持板１０とを溶接により結合する。さらに、第１、第２伝熱管３、４の最下部と各第１、第２電熱ヒータ８、９の湾曲部８Ｃ、９Ｃとの距離を所定寸法に維持するために、第１、第２伝熱管３、４の最下部と各第１、第２電熱ヒータ８、９の湾曲部８Ｃ、９Ｃとを針金で結束する。この状態において、上方間隔保持板１０と第１伝熱管３の入口部３Ａと第２伝熱管４の出口部４Ｂとを点付け溶接する。これらにより、伝熱管ブロック２０、第１、第２電熱ヒータ８、９、上方間隔保持板１０、ヒータサポート板１１、蓄熱容器１内に納める全部材が１つの伝熱管・ヒータブロックとなる。   In this state, whether or not the first and second electric heaters 8 and 9 are twisted in the vertical direction is confirmed. Thus, if there is a twist, after correcting this, the straight portions 8A, 9A of the first and second electric heaters 8, 9 and the upper spacing plate 10 are joined by welding. Furthermore, in order to maintain the distance between the lowermost portions of the first and second heat transfer tubes 3 and 4 and the curved portions 8C and 9C of the first and second electric heaters 8 and 9 at a predetermined size, the first and second The lowermost portions of the heat transfer tubes 3 and 4 and the curved portions 8C and 9C of the first and second electric heaters 8 and 9 are bound with a wire. In this state, the upper spacing plate 10, the inlet portion 3A of the first heat transfer tube 3, and the outlet portion 4B of the second heat transfer tube 4 are spot welded. As a result, the heat transfer tube block 20, the first and second electric heaters 8 and 9, the upper gap holding plate 10, the heater support plate 11, and all members housed in the heat storage container 1 become one heat transfer tube / heater block.

この伝熱管・ヒータブロックの上下を入れ替え、据付時の向きにした状態で吊り上げ、蓄熱容器１内に下降させることによりこの伝熱管・ヒータブロックを収納する。この状態において、図２に示す上方間隔保持板１０の中心部の円形開口１０Ｅおよび各場所の三角開口１０Ｆから粒子状の蓄熱材１２を投入し、第１、第２伝熱管３、４及び各第１、第２電熱ヒータ８、９の周囲に充填する。これによって、本実施形態の組み立てが完了する。なお、断熱材の取り付け時期は、蓄熱材１２の充填の前後の何れでもよい。   The top and bottom of the heat transfer tube / heater block are switched, lifted in the state of installation, and lowered into the heat storage container 1 to accommodate the heat transfer tube / heater block. In this state, the particulate heat storage material 12 is introduced from the circular opening 10E at the center of the upper gap holding plate 10 shown in FIG. 2 and the triangular opening 10F at each location, and the first and second heat transfer tubes 3, 4 and each The first and second electric heaters 8 and 9 are filled. Thereby, the assembly of this embodiment is completed. Note that the heat insulating material may be attached either before or after the heat storage material 12 is filled.

［本実施形態の動作］
このように構成した本実施形態においては、深夜または電力余剰電力を第１、第２電熱ヒータ８、９に投入して蓄熱材１２に蓄熱する。この蓄熱した熱を利用する際には、第１伝熱管３内に熱媒体（液体）が供給され、この熱媒体が管内を流通する間に蓄熱材１２により加熱され、その後、第２伝熱管４から取り出され、吸収式冷温水機や給油器などの熱源として利用される。 [Operation of this embodiment]
In the present embodiment configured as described above, midnight or surplus power is supplied to the first and second electric heaters 8 and 9 to store heat in the heat storage material 12. When using the heat thus stored, a heat medium (liquid) is supplied into the first heat transfer tube 3 and heated by the heat storage material 12 while the heat medium flows through the tube, and then the second heat transfer tube. It is taken out from No. 4 and used as a heat source for an absorption chiller / heater or an oiler.

［本実施形態の効果］
このように構成した本実施形態によれば、２種類の直径の異なるコイル状の第１、第２伝熱管３、４を含み、Ｕ字形であって、湾曲部の半径の異なる２種類の第１、第２電熱ヒータ８、９を含むとともに、これらの第１、第２電熱ヒータ８、９は所定の角度間隔で放射状に配列され、湾曲部半径の大きい第１電熱ヒータ８は内側に位置する第２伝熱管４及び外側に位置する第１伝熱管３を挟むように配列され、湾曲部半径の小さい第２電熱ヒータ９は外側に位置する第１伝熱管３を挟み、しかも隣り合う湾曲部半径の大きい第１電熱ヒータ８の間の位置に配列されるように構成にしてあるので、第１、第２電熱ヒータ８、９の加熱による蓄熱材１２への効率の良い蓄熱、および蓄熱材１２に蓄えられた熱の第１、第２伝熱管３、４内の熱媒体への効率の良い伝達を実現させることができ、高い信頼性を確保することができる。また、Ｕ字形の第１、第２電熱ヒータ８、９は規則的な配列であるから、位置決めも簡単で、組み立てが容易にでき、したがって、高効率、高精度な蓄熱装置を実現できる。 [Effect of this embodiment]
According to the present embodiment configured as described above, the coil-shaped first and second heat transfer tubes 3 and 4 having two different diameters are included, and the two types of the first and second heat transfer tubes 3 and 4 having different radii of the curved portions are included. 1 and second electric heaters 8 and 9, and these first and second electric heaters 8 and 9 are radially arranged at predetermined angular intervals, and the first electric heater 8 having a large radius of curvature is positioned inside. The second electric heater 9 is arranged so as to sandwich the second heat transfer tube 4 and the first heat transfer tube 3 positioned outside, and the second electric heater 9 having a small radius of the curved portion sandwiches the first heat transfer tube 3 positioned outside, and is adjacent to the other. Since it is configured to be arranged at a position between the first electric heaters 8 having a large part radius, efficient heat storage to the heat storage material 12 by heating the first and second electric heaters 8 and 9, and heat storage Heat medium in the first and second heat transfer tubes 3 and 4 of the heat stored in the material 12 The efficient transfer can be realized, it is possible to ensure high reliability. In addition, since the U-shaped first and second electric heaters 8 and 9 are regularly arranged, positioning is easy and assembly is easy. Therefore, a highly efficient and highly accurate heat storage device can be realized.

蓄熱材１２が粒状にした高密度電融マグネシアのみからなる構成にしてあるので、内部に形成される空洞を少なくすることができ、また溶融塩の蒸発温度により制限されることがない。これらにより、より高い温度での蓄熱を可能とし、蓄熱材１２当りの蓄熱量を高くすることができ、所望の蓄熱効果を得る為の蓄熱装置を従来よりも小型にすることできる。また、溶融塩を設けないので、製造コストを安くすることができる。さらに、蓄熱材１２が高密度電融マグネシアのみから成るので、蓄熱容器１内に均一に分布させることができ、精度の良い蓄熱性能を確保できる。また、第１、第２伝熱管３、４と第１、第２電熱ヒータ８、９の配置、向きに対する制約を緩和させることができ、第１、第２伝熱管３、４と第１、第２電熱ヒータ８、９の蓄熱容器１内への組み込みが容易になる。したがって製作工数を低減でき、これによっても構造コストを安くすることができる。   Since the heat storage material 12 is composed of only granular high-density electrofused magnesia, cavities formed inside can be reduced and is not limited by the evaporation temperature of the molten salt. As a result, heat storage at a higher temperature is possible, the amount of heat stored per heat storage material 12 can be increased, and a heat storage device for obtaining a desired heat storage effect can be made smaller than before. Moreover, since no molten salt is provided, the manufacturing cost can be reduced. Furthermore, since the heat storage material 12 consists only of high-density electrofused magnesia, it can be uniformly distributed in the heat storage container 1, and accurate heat storage performance can be ensured. In addition, restrictions on the arrangement and orientation of the first and second heat transfer tubes 3 and 4 and the first and second electric heaters 8 and 9 can be relaxed, and the first and second heat transfer tubes 3 and 4 and the first, It becomes easy to incorporate the second electric heaters 8 and 9 into the heat storage container 1. Therefore, the number of manufacturing steps can be reduced, and this can also reduce the structural cost.

また、より高温で蓄熱される結果、第１、第２伝熱管３、４内を通る熱媒体との温度差を大きく採れるので、蓄熱材１２から熱媒体への伝熱性能が高くなる。   Further, as a result of storing heat at a higher temperature, a large temperature difference from the heat medium passing through the first and second heat transfer tubes 3 and 4 can be obtained, so that the heat transfer performance from the heat storage material 12 to the heat medium is improved.

本発明に係る蓄熱装置の一実施形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows one Embodiment of the thermal storage apparatus which concerns on this invention. 本実施形態の平面図ある。It is a top view of this embodiment. 図１のＢ−Ｂ矢視に相応する断面図である。It is sectional drawing corresponding to the BB arrow of FIG. 図３の要部拡大図である。It is a principal part enlarged view of FIG. 本実施形態に備えられる伝熱管を示す平面図である。It is a top view which shows the heat exchanger tube with which this embodiment is equipped. 図５に示す伝熱管の正面図である。It is a front view of the heat exchanger tube shown in FIG. 本実施形態に備えられる結束用針金の装着部の要部拡大図である。It is a principal part enlarged view of the mounting part of the wire for bundling with which this embodiment is equipped. 図６に示す結束用針金の装着部の要部拡大図である。It is a principal part enlarged view of the mounting part of the wire for binding shown in FIG. 本実施形態に備えられる上方間隔保持板の取り付け部の要部拡大縦断面図である。It is a principal part expanded vertical sectional view of the attaching part of the upper space | interval holding | maintenance board with which this embodiment is equipped. 本実施形態に備えられる電熱ヒータの正面図である。It is a front view of the electric heater with which this embodiment is equipped. 本実施形態の蓄熱装置の組み立て途中の状態を示す図で、特に伝熱管ブロックを組み立てた後、この伝熱管ブロックに含まれる伝熱管の出入口部を上方間隔保持板の孔に挿入した状態を示す図である。It is a figure which shows the state in the middle of the assembly of the heat storage apparatus of this embodiment, and shows the state which inserted the inlet-and-outlet part of the heat exchanger tube contained in this heat exchanger tube block into the hole of an upper space | interval holding plate especially after assembling the heat exchanger tube block. FIG. 本実施形態の蓄熱装置の組み立て途中の状態を示す図で、図１２の状態に組み立てた後、伝熱管ブロックに電熱ヒータを組み込む状態を示す図である。It is a figure which shows the state in the middle of the assembly of the heat storage apparatus of this embodiment, and is a figure which shows the state which incorporates an electric heater in a heat exchanger tube block after assembling in the state of FIG.

符号の説明Explanation of symbols

１ 蓄熱容器
３ 第１伝熱管
３Ｂ 出口部
４ 第２伝熱管
４Ａ 入口部
７ 結束用針金
８ 第１電熱ヒータ
８Ａ、８Ｂ 直線部
８Ｃ 湾曲部
９ 第２電熱ヒータ
９Ａ、９Ｂ 直線部
９Ｃ 湾曲部
１０ 上方間隔保持板
１１ ヒータサポート板
１２ 蓄熱材
１３ 治具
１４ 支持台
２０ 伝熱管ブロック DESCRIPTION OF SYMBOLS 1 Heat storage container 3 1st heat exchanger tube 3B Outlet part 4 2nd heat exchanger tube 4A Inlet part 7 Bundling wire 8 1st electric heater 8A, 8B Straight part 8C Bending part 9 2nd electric heater 9A, 9B Straight part 9C Bending part 10 Upper spacing holding plate 11 Heater support plate 12 Heat storage material 13 Jig 14 Support base 20 Heat transfer tube block

Claims (2)

蓄熱材が充填された蓄熱容器内に複数の伝熱管および複数の電熱ヒータを配置し、前記伝熱管のそれぞれに熱媒体を流すことにより、この熱媒体を加熱して高温の熱媒体および蒸気を生成し、これらを熱負荷に供給する蓄熱装置において、
前記伝熱管が少なくとも２種類の直径の異なるコイル状のものを含み、
前記電熱ヒータがＵ字形であって、湾曲部の半径の異なる２種類のものを含むととともに、
これらの各電熱ヒータは所定の角度間隔で放射状に配列され、
前記湾曲部半径の大きい電熱ヒータは内側および外側に位置する伝熱管を挟むように配列され、
前記湾曲部半径の小さい電熱ヒータは外側に位置する伝熱管を挟み、しかも隣り合う前記湾曲部半径の大きい電熱ヒータの間の位置に配列されていることを特徴とする蓄熱装置。 A plurality of heat transfer tubes and a plurality of electric heaters are arranged in a heat storage container filled with a heat storage material, and a heat medium is caused to flow through each of the heat transfer tubes, thereby heating the heat medium and supplying a high-temperature heat medium and steam. In a heat storage device that generates and supplies these to a thermal load,
The heat transfer tube includes at least two types of coiled ones having different diameters,
The electric heater is U-shaped and includes two types having different radii of the curved portions,
Each of these electric heaters is arranged radially at a predetermined angular interval,
The electric heater having a large radius of curvature is arranged so as to sandwich the heat transfer tubes located inside and outside,
The heat storage device characterized in that the electric heater with a small radius of the curved portion sandwiches a heat transfer tube located outside and is arranged at a position between the adjacent electric heaters with a large radius of the curved portion. 前記請求項１に記載の発明において、
前記内側に位置する伝熱管の端部と前記外側に位置する伝熱管の端部とは、互いに連絡されており、被加熱熱媒体の入口は、内側に位置する伝熱管に形成され、被加熱熱媒体の出口は、外側に位置する伝熱管に形成されることを特徴とする蓄熱装置。 In the invention according to claim 1,
The end portion of the heat transfer tube located on the inner side and the end portion of the heat transfer tube located on the outer side are in communication with each other, and the inlet of the heating medium to be heated is formed in the heat transfer tube located on the inner side. The heat storage device, wherein the heat medium outlet is formed in a heat transfer tube located outside.
JP2006341334A 2006-12-19 2006-12-19 Heat storage device Pending JP2008151448A (en)

Priority Applications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011062161A1 (en) * 2009-11-17 2011-05-26 独立行政法人農業・食品産業技術総合研究機構 Method and device for generating a heating medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011062161A1 (en) * 2009-11-17 2011-05-26 独立行政法人農業・食品産業技術総合研究機構 Method and device for generating a heating medium

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