JP2006347583A - Tank - Google Patents

Tank Download PDF

Info

Publication number
JP2006347583A
JP2006347583A JP2005175771A JP2005175771A JP2006347583A JP 2006347583 A JP2006347583 A JP 2006347583A JP 2005175771 A JP2005175771 A JP 2005175771A JP 2005175771 A JP2005175771 A JP 2005175771A JP 2006347583 A JP2006347583 A JP 2006347583A
Authority
JP
Japan
Prior art keywords
tank
bag
folded
shape
sheet base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2005175771A
Other languages
Japanese (ja)
Inventor
Takefumi Itou
岳文 伊藤
Kiyotaka Ueno
清隆 上野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kansai Electric Power Co Inc
Sumitomo Electric Industries Ltd
Original Assignee
Kansai Electric Power Co Inc
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kansai Electric Power Co Inc, Sumitomo Electric Industries Ltd filed Critical Kansai Electric Power Co Inc
Priority to JP2005175771A priority Critical patent/JP2006347583A/en
Publication of JP2006347583A publication Critical patent/JP2006347583A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

Landscapes

  • Fuel Cell (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an n-gonal prism-like tank (n≥5, natural number) which can be simply designed, and a redox flow battery system equipped with this tank as a tank for storing an electrolyte. <P>SOLUTION: The tank is equipped with a bag-like body which is formed by joining edge parts of rectangular sheet substrates S<SB>1</SB>and S<SB>2</SB>and is a rectangular shape under the condition folded into a plane shape. This tank can be formed into a rectangular parallelepiped by inflating the inside of the bag-like body, and in addition, by folding a position corresponding to a corner part in this rectangular parallelepiped, it can be formed into a pentagonal prism-like shape. The folding is performed so that at the corner part of the rectangular parallelepiped, by using the inner center O of a right-angled triangle DEF as a center, a side DE and a side DF come into contact with a side EF. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、例えば、電解液といった液体を貯留するのに適したタンク、及びこのタンクを具えるレドックスフロー電池システムに関するものである。特に、多角柱状に簡単に成形することができるタンクに関するものである。   The present invention relates to a tank suitable for storing a liquid such as an electrolyte and a redox flow battery system including the tank. In particular, the present invention relates to a tank that can be easily formed into a polygonal column shape.

従来、負荷平準化や瞬低対策などにレドックスフロー電池システムが利用されている。このシステムは、電池反応を行うセルを有する電池本体と、この電池本体に供給する電解液を貯留するタンクと、電池本体とタンク間に配置されて電解液の輸送を行う輸送路とを具える構成が代表的である。電池本体は、通常、直流/交流変換器を介して発電所や需要家などの外部電力系統に接続され、発電所などを充電電力源として充電を行い、需要家などを放電対象として放電を行う。   Conventionally, a redox flow battery system has been used for load leveling and a measure against voltage sag. The system includes a battery main body having a cell for performing a battery reaction, a tank for storing an electrolytic solution supplied to the battery main body, and a transportation path disposed between the battery main body and the tank for transporting the electrolytic solution. The configuration is representative. The battery body is usually connected to an external power system such as a power plant or a consumer via a DC / AC converter, is charged using the power plant as a charging power source, and is discharged using the consumer as a discharge target. .

上記電解液を貯留するタンクとして、特許文献1に記載されるようなゴムシート材を袋状に加工したゴムタンクがある。このようなゴムタンクは、(1)可撓性に富み、折り畳むことでコンパクト化が可能であるため、運搬や設置作業が行い易い、(2)収納スペースの形状に適合した形状に形成し易く、収納スペースの無駄を低減することができる、といった利点を有している。例えば、直方体状のゴムタンクは、以下の手順で形成する。まず、図8(I)に示すように矩形状のシート基材100を作製する。このシート基材100は、長方形状のゴムシート片101を複数用意し、適宜切断、接合して作製する。また、適宜糊代部102を設けておく。次に、このシート基材100の両縁部(図8(I)において左右縁部)を重ね合わせて接合すると共に、糊代部102を折り畳んで接合し、図8(II)に示すように平面状に折り畳んだ状態において長方形状の袋体103を作製する。この袋体103に折り目104(図8において一点鎖線で示す)を設け、図8(III)に示すように袋体103の内部を膨らませて直方体状となるように折り目104に従って折って変形させる。更に、折り畳まれることでシート基材100が重なり合わされて形成された三角形状の重複部105を直方体の一面(図8(III)では上下面)に接するように折り畳む。このようにして、図8(IV)に示すような直方体状のゴムタンク106を得る(特許文献1図4参照)。この直方体状のゴムタンク106は、通常、図8(II)に示す平面状に折り畳んだ袋体103の状態で設置現場まで搬送し、現場にて図8(IV)に示すように直方体状に変形する。   As a tank for storing the electrolytic solution, there is a rubber tank obtained by processing a rubber sheet material into a bag shape as described in Patent Document 1. Such a rubber tank is (1) rich in flexibility and can be made compact by folding, making it easy to carry and install, (2) easy to form into a shape that fits the shape of the storage space, There is an advantage that waste of storage space can be reduced. For example, a rectangular parallelepiped rubber tank is formed by the following procedure. First, as shown in FIG. 8 (I), a rectangular sheet substrate 100 is produced. This sheet substrate 100 is prepared by preparing a plurality of rectangular rubber sheet pieces 101, and cutting and joining them as appropriate. Further, a margin part 102 is provided as appropriate. Next, both edge portions (left and right edge portions in FIG. 8 (I)) of the sheet base material 100 are overlapped and joined, and the adhesive margin portion 102 is folded and joined, as shown in FIG. 8 (II). A rectangular bag 103 is produced in a state of being folded flat. The bag body 103 is provided with a fold line 104 (indicated by a one-dot chain line in FIG. 8), and the bag body 103 is expanded and deformed according to the fold line 104 so as to form a rectangular parallelepiped shape as shown in FIG. 8 (III). Further, the triangular overlapping portion 105 formed by overlapping the sheet base material 100 by folding is folded so as to be in contact with one surface of the rectangular parallelepiped (upper and lower surfaces in FIG. 8 (III)). In this manner, a rectangular parallelepiped rubber tank 106 as shown in FIG. 8 (IV) is obtained (see FIG. 4 of Patent Document 1). This rectangular rubber tank 106 is usually transported to the installation site in the state of the bag body 103 folded into a flat shape as shown in FIG. 8 (II), and deformed into a rectangular parallelepiped shape as shown in FIG. 8 (IV). To do.

ところで、上記タンクでは、設置スペースによって図8に示すような直方体状だけでなく、五角柱状が望まれることがある。例えば、建物の地下部に設けられる湧水槽設置スペースなどは、図9に示すように柱(又は壁)200同士の交差箇所201において角部が落とされた形状となっていることがあり、このような交差箇所201に沿わせるようにレドックスフロー電池システムの電解液タンクを設置する場合、タンクTは、図9に示すように断面五角形状のもの、即ち、五角柱状のものが望まれる。特許文献1に記載されるようなゴムシート材を用いて五角柱状のゴムタンクを作製するには、以下のように行われる。まず、長方形状のゴムシート片を複数用意し、適宜切断、接合して図10(I)に示すように五角形状のシート基材110を2枚作製する。シート基材110には、折り目111(図10において一点鎖線で示す)を設けておく。これら五角形状のシート基材110の縁部を接合し、図10(II)に示すように平面状に折り畳んだ状態において五角形状の袋体112を作製する。この袋体112の内部を膨らませて五角柱状となるように折り目111に従って折り畳み、更に、シート基材110が重なり合わされた三角形状の重複部113を五角柱の一面(図10(III)において側面)に接するように折り畳むことで、図10(III)に示すような五角柱状のゴムタンク114を得る。図10に示す例では、シート基材110同士を接合した合わせ目115がゴムタンク114の側面に位置するように袋体112を設計している。   By the way, in the tank, depending on the installation space, not only a rectangular parallelepiped shape as shown in FIG. 8 but also a pentagonal prism shape may be desired. For example, the spring tank installation space provided in the basement of the building may have a shape with corners dropped at the intersection 201 between the pillars (or walls) 200 as shown in FIG. When the electrolyte tank of the redox flow battery system is installed so as to be along the intersection 201, it is desirable that the tank T has a pentagonal cross section as shown in FIG. 9, that is, a pentagonal column. Producing a pentagonal columnar rubber tank using a rubber sheet material as described in Patent Document 1 is performed as follows. First, a plurality of rectangular rubber sheet pieces are prepared, and appropriately cut and joined to produce two pentagonal sheet base materials 110 as shown in FIG. 10 (I). The sheet base 110 is provided with a fold line 111 (indicated by a one-dot chain line in FIG. 10). Edges of these pentagonal sheet base materials 110 are joined, and a pentagonal bag body 112 is produced in a state of being folded flat as shown in FIG. 10 (II). The inside of the bag body 112 is inflated and folded according to the fold line 111 so as to form a pentagonal column, and further, the triangular overlapping portion 113 on which the sheet base material 110 is overlapped is provided on one surface of the pentagonal column (the side surface in FIG. 10 (III)). The rubber tank 114 having a pentagonal column shape as shown in FIG. In the example shown in FIG. 10, the bag body 112 is designed so that the joint 115 obtained by joining the sheet base materials 110 is positioned on the side surface of the rubber tank 114.

特開2000-21433号公報JP 2000-21433 A

上記のように設置スペースの形状に応じて五角形状のシート基材を作製し、これらシート基材を用いて平面状に折り畳んだ状態において五角形状の袋体とし、更に、この袋体を膨らませて折り目に沿って折ることで五角柱状のゴムタンクを得ることができる。しかし、この形成方法では、まず、五角形状といった異形のシート基材を作製しなければならず、その設計に時間がかかる。そのため、五角柱以上の多角柱状のタンクをより簡単に作製できることが望まれている。   As described above, a pentagonal sheet base material is produced according to the shape of the installation space, and a pentagonal bag body is formed in a state where the sheet base material is folded into a flat shape, and the bag body is further inflated. A pentagonal rubber tank can be obtained by folding along the crease. However, in this forming method, first, an irregular sheet base material such as a pentagonal shape must be produced, and the design takes time. For this reason, it is desired that a polygonal columnar tank of pentagonal column or more can be more easily manufactured.

また、五角形状のシート基材を作製する場合は、矩形状のシート基材を作製する場合と比較して、切断されて除去される量が多くなり易い。そのため、ゴムシートなどの形成材料の無駄をできるだけ少なくすることが望まれている。更に、袋体を膨らませて折り畳み、所望の立体形状とする場合、シート基材が重なり合わされる重複部、例えば、図10(III)に示す三角形状の重複部113がつくられるが、この部分は、本来タンクにおいて不要な部分である。従って、この不要な部分に用いられる形成材料の量もできるだけ少なくすることが望まれている。   Moreover, when producing a pentagonal sheet base material, the amount cut and removed tends to increase compared to the case of producing a rectangular sheet base material. Therefore, it is desired to minimize the waste of forming materials such as rubber sheets. Further, when the bag body is inflated and folded into a desired three-dimensional shape, an overlapping portion where the sheet base material is overlapped, for example, a triangular overlapping portion 113 shown in FIG. 10 (III) is created. Originally, it is an unnecessary part in the tank. Therefore, it is desired to reduce the amount of the forming material used for this unnecessary portion as much as possible.

そこで、本発明の主目的は、より簡単に作製することができ、形成材料の無駄をより少なくすることができるn角柱状(n≧5)のタンクを提供することにある。また、本発明の他の目的は、このタンクを具えるレドックスフロー電池システムを提供することにある。   Accordingly, a main object of the present invention is to provide an n-prism-shaped (n ≧ 5) tank that can be more easily manufactured and can reduce waste of forming material. Another object of the present invention is to provide a redox flow battery system including this tank.

上述したような矩形状のシート基材を作製し、このシート基材を用いて平面状に折り畳んだ状態で矩形状であって四角柱状に形成可能な袋状体を用いて、五角柱以上の多角柱状のタンクを形成できれば、五角形状といった異形のシート基材及び五角形状の袋状体から五角柱状のタンクを得る場合に比べて、シート基材や袋状体が簡単に作製でき、かつゴムシートなどの形成材料の無駄を少なくすることができる。そこで、本発明者は、五角形状といった異形のシート基材や袋状体を用いるのではなく、矩形状のシート基材からなり、平面状に折り畳まれた状態で矩形状である袋状体を用いて、五角柱以上の多角柱状のタンクを得るべく、種々検討した。その結果、矩形状の袋状体を四角柱状に膨らませた状態において、その角部に相当する箇所を折り畳むことで、矩形状の袋体からn角柱状(n≧5の自然数)のタンクが簡単に得られるとの知見を得た。この知見に基づき本発明を規定する。   A rectangular sheet base material as described above is prepared, and a bag-like body that is rectangular and can be formed into a quadrangular prism shape in a state of being folded into a planar shape using the sheet base material. If a polygonal column-shaped tank can be formed, a sheet substrate and a bag-like body can be easily produced compared to the case of obtaining a pentagonal columnar tank from a pentagonal-shaped sheet base material and a pentagonal bag-like body, and rubber. Waste of forming materials such as sheets can be reduced. Therefore, the present inventor does not use an irregularly shaped sheet base material or bag-like body such as a pentagonal shape, but is formed of a rectangular sheet base material, and a bag-like body that is rectangular in a state of being folded flat. Various studies were carried out to obtain a polygonal columnar tank with a pentagonal column or more. As a result, in a state where the rectangular bag-shaped body is inflated into a quadrangular prism shape, by folding the portion corresponding to the corner portion, an n-square column-shaped (n ≧ 5 natural number) tank can be easily obtained from the rectangular bag body. I got the knowledge that it can be obtained. The present invention is defined based on this finding.

本発明は、内部に液体を貯留可能なタンクであって、このタンクは、平面状に折り畳み可能であり、かつ内部を膨らませることで四角柱状に形成可能な矩形状の袋状体を具える。そして、この袋状体は、四角柱状に膨らませたときに角部に相当する箇所を折り畳むことでn角柱状(n≧5)になるように成形可能な可変成形部を有するものとする。以下、本発明をより詳しく説明する。   The present invention is a tank capable of storing liquid therein, and the tank includes a rectangular bag-like body that can be folded into a flat shape and can be formed into a quadrangular prism shape by inflating the inside. . And this bag-like body shall have a variable shaping | molding part which can be shape | molded so that it may become n square pillar shape (n> = 5) by folding the location corresponded to a corner | angular part, when it inflate in square pillar shape. Hereinafter, the present invention will be described in more detail.

本発明タンクは、平面状に折り畳んだ状態において矩形状であり、膨らませて立体状にした状態において多角柱状に変形可能な袋状体を具える。この袋状体は、タンク本体として利用されるものであり、上記のように立体状にした際、その内部空間が液体貯留用の空間として利用される。このような袋状体は、例えば、矩形状のシート基材を2枚作製し、これらシート基材の縁部を接合したり、或いは、矩形状のシート基材を作製し、このシート基材を適宜折り畳み、縁部や糊代部を接合することにて簡単に得ることができる。   The tank of the present invention has a rectangular shape in a state of being folded flat, and includes a bag-like body that can be deformed into a polygonal column in a state of being inflated and three-dimensional. This bag-like body is used as a tank body, and when it is made three-dimensional as described above, its internal space is used as a liquid storage space. Such a bag-like body, for example, produces two rectangular sheet base materials and joins the edges of the sheet base materials or creates a rectangular sheet base material. Can be obtained by simply folding the edge and joining the edges and margins.

上記シート基材の構成材料は、折り畳める程度の可撓性を有し、貯留する液体が浸透して外部に漏洩したりすることがなく、貯留する液体に対応した特性、例えば、耐酸性、耐熱性、絶縁性などを具える材料を適宜選択するとよい。例えば、有機繊維からなる基布に少なくとも1層以上のゴム層を被覆してなるゴムシートや樹脂製シートなどが挙げられる。   The constituent material of the sheet base material is flexible enough to be folded, so that the stored liquid does not permeate and leak to the outside, and has characteristics corresponding to the stored liquid, such as acid resistance and heat resistance. It is preferable to select a material having properties such as property and insulation. Examples thereof include a rubber sheet or a resin sheet obtained by coating a base fabric made of organic fibers with at least one rubber layer.

シート基材の構成材料として上記ゴムシートを利用する場合、基布を構成する有機繊維は、タンクの用途に応じて適宜選択するとよく、例えば、タンクをレドックスフロー電池システムに利用されるバナジウムイオン溶液などの電解液の貯留に用いる場合、上記有機繊維は、長期に亘って電解液と接触していても、電解液により劣化しにくいもの、例えば、耐酸性に優れるポリプロピレンやポリエチレン、フッ素樹脂などからなるものが好ましい。中でもポリプロピレンは、強度が高く、低コストであるため、より好ましい。基布は、上記有機繊維からなる平織りやバスケット織りなどの一般的な構造のものが利用できる。また、基布とゴム層との接着性を向上するために目開き状態に織られた基布を用い、この基布の表裏面にゴム層を被覆し、ゴム同士が互いにブリッジで一体化されてなるゴムシートを利用してもよい。基布に被覆するゴムも、有機繊維と同様にタンクの用途に応じて適宜選択するとよく、天然ゴム、合成ゴムのいずれでもよい。例えば、タンクをレドックスフロー電池システムに利用される電解液の貯留に用いる場合、長期に亘って電解液により劣化しにくいもの、例えば、電解液に対する耐性に特に優れるクロロスルホン化ポリエチレンや、EPDM(エチレンプロピレンジエン三元共重合体)ゴム、ブチルゴムなどが好ましい。その他、ゴムの1種として近年注目されている熱可塑性エラストマーなども用いることができる。また、ゴムの材質を問わず、架橋剤として有機過酸化物を用いると、硫黄を用いるよりも架橋密度を高め、ゴム層に電解液が浸透する速度を抑えると共に、機械的強度をも高くすることができる。従来よりレドックスフロー電池システムにおいて電解液貯留用ゴムタンクに用いられているゴムシートと同様のゴムシートを用いてもよい。   When using the rubber sheet as a constituent material of the sheet base material, the organic fiber constituting the base fabric may be appropriately selected according to the use of the tank. For example, the vanadium ion solution used for the redox flow battery system in the tank When storing the electrolyte solution such as, the organic fiber is not easily deteriorated by the electrolyte solution even if it is in contact with the electrolyte solution for a long period of time, for example, polypropylene, polyethylene, fluorine resin, etc. having excellent acid resistance. Is preferred. Among these, polypropylene is more preferable because of its high strength and low cost. As the base fabric, those having a general structure such as a plain weave or a basket weave made of the organic fiber can be used. In addition, in order to improve the adhesion between the base fabric and the rubber layer, a base fabric woven in an open state is used, and the rubber layers are covered on the front and back surfaces of the base fabric so that the rubbers are integrated with each other by a bridge. A rubber sheet may be used. The rubber to be coated on the base fabric may be appropriately selected according to the use of the tank, like the organic fiber, and may be either natural rubber or synthetic rubber. For example, when a tank is used for storing an electrolyte used in a redox flow battery system, it is difficult to be deteriorated by the electrolyte over a long period of time, for example, chlorosulfonated polyethylene having excellent resistance to the electrolyte, EPDM (ethylene Propylene diene terpolymer) rubber, butyl rubber and the like are preferable. In addition, thermoplastic elastomers that have recently attracted attention as a kind of rubber can be used. Regardless of the material of the rubber, using an organic peroxide as the cross-linking agent increases the cross-linking density, suppresses the rate at which the electrolyte penetrates into the rubber layer, and increases the mechanical strength compared to using sulfur. be able to. A rubber sheet similar to a rubber sheet conventionally used in an electrolyte storage rubber tank in a redox flow battery system may be used.

シート基材は、ゴムシートなどの形成材料シートが比較的大面積を有する場合、形成材料シートを所定の形状に切断することにて作製してもよいし、形成材料シートが比較的小面積である場合、複数の形成材料シート片を接合して所望の面積を有するようにし、形成材料シート片を接合した接合シートを所定の形状に切断して作製してもよい。本発明では、シート基材を矩形状とするため、シート基材の設計が比較的容易であり、簡単にシート基材を作製することができる。また、本発明では、シート基材を矩形状とするため、形成材料シートから切断により除去されて無駄となる量が比較的少なくて済み、従来の五角形状のシート基材を作製する場合と比較して、無駄となる形成材料シートの量を低減できる。   When a forming material sheet such as a rubber sheet has a relatively large area, the sheet base material may be produced by cutting the forming material sheet into a predetermined shape, or the forming material sheet may have a relatively small area. In some cases, a plurality of forming material sheet pieces may be joined to have a desired area, and the joining sheet obtained by joining the forming material sheet pieces may be cut into a predetermined shape. In the present invention, since the sheet base material has a rectangular shape, the design of the sheet base material is relatively easy, and the sheet base material can be easily produced. Further, in the present invention, since the sheet base material is rectangular, the amount of waste that is removed by cutting from the forming material sheet is relatively small, and compared with the case of producing a conventional pentagonal sheet base material. Thus, the amount of the forming material sheet that is wasted can be reduced.

このシート基材を上述のように適宜接合、折り畳むことで平面状に折り畳んだ状態で矩形状である袋状体が得られる。上記ゴムシートからなるシート基材を用いる場合、接合は、シート基材同士を重ね合わせ、重ね合わせたシート基材間に未加硫のゴムを介在させ、この未加硫のゴムを加硫又は架橋させることで行うと、接合性が高く、接合箇所からの液体の漏洩を防止することができて好ましい。特に、上記加硫又は架橋の際、接合箇所を加熱すると共に圧力を加える(プレス加工を行う)とより確実に接合できる。更に、シート基材において上記接合箇所以外の箇所にもプレス加工を施す、好ましくはシート基材の全面に亘ってプレス加工を施すと、ゴム層に存在する微小な気泡(ボイド)を縮小又は除去することができる。特に、このプレス加工は加熱しながら行うと、ボイド内のガスを逃がし易い。このようなプレス加工を行ったシート基材からなるタンクをレドックスフロー電池システムにおいて電解液の貯留に利用すると、ゴム層内のボイドが除去又は縮小されることで、ボイドに電解液が浸透することによる絶縁抵抗の低下を低減することができる。   By appropriately joining and folding the sheet base material as described above, a bag-like body having a rectangular shape is obtained in a state of being folded into a flat shape. When using a sheet base material composed of the rubber sheet, the bonding is performed by overlapping the sheet base materials, interposing unvulcanized rubber between the superposed sheet base materials, and vulcanizing or unvulcanizing the unvulcanized rubber. When it is carried out by crosslinking, it is preferable because the bondability is high and the leakage of liquid from the bonded portion can be prevented. In particular, during the vulcanization or cross-linking, the joints can be more reliably joined by heating and applying pressure (pressing). Furthermore, if the sheet base material is subjected to press processing other than the above-mentioned joining locations, preferably the entire surface of the sheet base material is pressed, microbubbles (voids) present in the rubber layer are reduced or removed. can do. In particular, when this press working is performed while heating, the gas in the void is likely to escape. When a tank made of a sheet base material subjected to such press working is used for storing electrolyte in the redox flow battery system, the electrolyte infiltrates into the void by removing or reducing the void in the rubber layer. It is possible to reduce the decrease in insulation resistance due to the above.

上記袋状体は、膨らませて立体状に折り畳んだ際にシート基材同士が重なり合う部分をつくるのに用いられるシート基材の量ができるだけ少なくなるように設計することが好ましい。例えば、矩形状のシート基材を2枚用意し、これらシート基材の縁部(外周)を接合して矩形状の袋状体とし、この袋状体の内部を膨らませて図7(I)に示す奥行きA×幅B×高さH(H>B>A)という大きさの直方体状のタンクを形成する場合を考える。このとき、シート基材同士の合わせ目(シート基材同士の接合箇所、図7(A),(B),(H)において点線で示す)をどの面に表わすかによってシート基材及び袋状体の大きさは、図7(A'),(B'),(H')に示すように3パタンから選択できる。例えば、図7(A)に示すように、合わせ目がA×B面及びB×H面に表れ、A×H面に表れないようにする場合、シート基材は、(B/2+A+B/2)×(B/2+H+B/2)という大きさのもの(糊代部を除く)を2枚用意し、これらシート基材の縁部を接合して袋状体bAを作製する。この袋状体bAを直方体状に成形する際、袋状体bAの四隅にあるB/2×B/2という大きさの八つの正方形(袋状体bAの表面に四つ、裏面に四つの合計八つ)は、四つの二等辺三角形となるように折り畳まれ、これら四つの二等辺三角形状の重複部iAは、図7(A)においてA×B面に接するように折り畳まれる。従って、図7(A')に示す袋状体bAでは、二等辺三角形状の重複部iAをつくるシート基材が無駄となる。具体的には、(B/2)2×8=2×B2が無駄となる。一方、例えば、図7(B)に示すように、合わせ目がA×B面及びA×H面に表れ、B×H面に表れないようにする場合、(A/2+B+A/2)×(A/2+H+A/2)という大きさ(糊代部を除く)のシート基材2枚から袋状体bBを作製する。この場合、上述した図7(A)と同様に考えて、二等辺三角形状の重複部iBとなるシート基材、即ち、(A/2)2×8=2×A2が無駄となる。他方、例えば、図7(H)に示すように、合わせ目がA×H面及びB×H面に表れ、A×B面に表れないようにする場合、(H/2+A+H/2)×(H/2+B+H/2)という大きさ(糊代部を除く)のシート基材2枚から袋状体bHを作製する。この場合、上述した図7(A)と同様に考えて、二等辺三角形状の重複部iHとなるシート基材、即ち、(H/2)2×8=2×H2が無駄となる。従って、図7に示す例の場合、H>B>Aとすると、無駄となるシート基材量が最も少ないのは、図7(B)に示すパタンとなる。なお、図7において一点鎖線は折り目、点線はシート基材同士の合わせ目、灰色の部分は、シート基材同士が重ね合わされる部分を示す。本発明タンクでは、図7に示すような矩形状の袋状体を用いるため、上述した3パタンのうち、無駄となるシート基材の量が最も少なくなるパタンを適宜選択するとよい。 The bag-like body is preferably designed so that the amount of the sheet base material used to create a portion where the sheet base materials overlap when inflated and folded into a three-dimensional shape is as small as possible. For example, two rectangular sheet base materials are prepared, and the edges (periphery) of these sheet base materials are joined to form a rectangular bag-like body, and the inside of the bag-like body is inflated to obtain FIG. A case where a rectangular parallelepiped tank having a size of depth A × width B × height H (H>B> A) shown in FIG. At this time, the sheet base material and the bag shape depending on which surface the joints between the sheet base materials (joint portions of the sheet base materials, indicated by dotted lines in FIGS. 7 (A), (B), (H)) are represented on The body size can be selected from three patterns as shown in FIGS. 7 (A ′), (B ′), and (H ′). For example, as shown in FIG. 7 (A), when the seam appears on the A × B surface and the B × H surface and does not appear on the A × H surface, the sheet base material is (B / 2 + A + B / 2) × (B / 2 + H + B / 2) (excluding glue margin) are prepared, and the edges of these sheet base materials are joined to form a bag-like body b Make A. Four of the bag-like body b A when forming a rectangular parallelepiped shape, a bag-like body b A four corners in B / 2 × B / 2 of the magnitude of eight square (bag-like body b A surface of the back surface four total eight), the folded such that the four isosceles triangle, overlap i a of these four isosceles triangle is folded in contact with the a × B side in FIG. 7 (a) It is. Therefore, in the bag-like body b A shown in FIG. 7 (A ′), the sheet base material that forms the isosceles triangular overlapping portion i A is wasted. Specifically, (B / 2) 2 × 8 = 2 × B 2 is wasted. On the other hand, for example, as shown in FIG.7 (B), when the seam appears on the A × B plane and the A × H plane and does not appear on the B × H plane, (A / 2 + B + A / 2) to produce a × (a / 2 + H + a / 2) of the size (except for the margin portion bag-like body b B from the sheet substrate two). In this case, considering the same as in FIG. 7A described above, the sheet base material that becomes an isosceles triangular overlapping portion i B , that is, (A / 2) 2 × 8 = 2 × A 2 is wasted. . On the other hand, for example, as shown in FIG. 7 (H), when the seam appears on the A × H plane and the B × H plane and does not appear on the A × B plane, (H / 2 + A + H / 2) to produce a × (H / 2 + B + H / bag-like body b H from the sheet substrate 2 sheets of 2) that the size (except for the margin portion). In this case, the same idea 7 as (A) described above, the sheet substrate as a isosceles triangle overlapping portion i H, namely, the waste (H / 2) 2 × 8 = 2 × H 2 . Therefore, in the example shown in FIG. 7, when H>B> A, the least amount of sheet base material that is wasted is the pattern shown in FIG. 7B. In FIG. 7, the alternate long and short dash line indicates the crease, the dotted line indicates the joint between the sheet base materials, and the gray portion indicates a portion where the sheet base materials are overlapped. Since the tank of the present invention uses a rectangular bag-shaped body as shown in FIG. 7, it is preferable to appropriately select a pattern that minimizes the amount of wasted sheet base material among the three patterns described above.

本発明タンクをレドックスフロー電池システムにおける電解液貯留用タンクとして利用する場合、上記袋状体は、従来よりレドックスフロー電池システムの電解液貯留用タンクに利用されている矩形状の袋状体と同様の手法にて作製したものを利用することができる。   When the tank of the present invention is used as an electrolyte storage tank in a redox flow battery system, the bag-like body is similar to the rectangular bag-like body conventionally used in an electrolyte storage tank of a redox flow battery system. What was produced by the method of this can be utilized.

本発明タンクは、平面状に折り畳んだ状体で矩形状である上記袋状体の内部を膨らませ、直方体状や立方体状などの四角柱状に形成可能なものとする。この点は、従来、レドックスフロー電池システムにおいて利用されている直方体状のゴムタンクと同様である。本発明タンクの特徴とする点は、この袋状体を四角柱状に膨らませたときに角部に相当する箇所を折り畳むことでn角柱状(n≧5)になるように成形可能な可変成形部を有する点にある。例えば、本発明タンクを五角柱状とする場合、四角柱状に膨らませた状態において、対向する二面が五角形となるように、これら二面において対向位置にある四組の角部のうち一組を折り畳む。例えば、本発明タンクを六角柱状とする場合、四角柱状に膨らませた状態において、対向する二面が六角形となるように、上記五角形の場合と同様に、これら二面において対向位置にある四組の角部のうち二組を折り畳む。四組の角部を折り畳めば、八角柱状のタンクが得られ、n角形(n≧5)の対向する二面の角部を更に折り畳むことで、八角柱以上の多角柱を得ることができる。このように四角柱状に変形させた状態において、対向する二面がn角形(n≧5)となるように、これら二面に具える角部を折り畳むことで、n角形状のタンクを容易に得ることができる。なお、本発明タンクにおいて四角柱状とは、立方体状、直方体状に限らず、対向する二面が平行四辺形(長方形、正方形、菱形を除く)、菱形、台形といった四角形を有するものを含む。   The tank of the present invention can be formed into a rectangular column shape such as a rectangular parallelepiped shape or a cubic shape by inflating the inside of the bag-like shape which is a rectangular shape with a flat shape. This point is the same as a rectangular rubber tank conventionally used in a redox flow battery system. The feature of the tank of the present invention is that the variable molded part that can be molded into an n prismatic shape (n ≧ 5) by folding a portion corresponding to the corner when the bag-like body is inflated into a quadrangular prism shape. It is in the point which has. For example, when the tank of the present invention is in the shape of a pentagonal column, in a state where the tank is inflated into a quadrangular prism shape, one set is folded out of the four sets of corners at the opposing positions on these two surfaces so that the two opposing surfaces are pentagonal. . For example, in the case where the tank of the present invention has a hexagonal column shape, in the state in which the tank is inflated into a quadrangular prism shape, the four pairs at opposite positions on these two surfaces are formed in the same manner as in the case of the pentagon so that the two opposite surfaces are hexagonal. Fold two of the corners. When the four corners are folded, an octagonal columnar tank can be obtained, and by further folding the opposing two corners of the n-gon (n ≧ 5), a polygonal column more than an octagonal prism can be obtained. In such a state of being deformed into a quadrangular prism, an n-shaped tank can be easily formed by folding the corners provided on these two surfaces so that the opposing two surfaces are n-gonal (n ≧ 5). Obtainable. In the tank of the present invention, the quadrangular prism shape is not limited to a cubic shape or a rectangular parallelepiped shape, but includes a shape in which two opposing faces have a quadrilateral shape such as a parallelogram (except for a rectangle, a square, and a rhombus), a rhombus, and a trapezoid.

そして、上記四角柱状の角部の折り畳みは、四角柱状に変形させた状態においてn角形となる面の角部につくられる三角形の内心を中心として行うと、シート基材同士が重ね合わされる部分の形状が美しいn角柱を容易に得ることができる。そこで、可変成形部としては、袋状体を四角柱状に膨らませたとき、一つの角部を形成する三つの面:第一面、第二面、第三面のうち、第一面の角部につくられる三角形と、第二面の一部及び及び第三面の一部とを含むことが挙げられる。そして、この可変成形部を折り畳みn角柱状のタンクとしたとき、このタンクが、上記三角形が折り畳まれてなるn角形状面と、上記第二面の一部及び前記第三面の一部が折り畳まれてなる矩形状の第四面とを有するように、これら三角形や第二面の一部、第三面の一部は、以下のように変形可能とすることが好ましい。具体的は、三角形の内心を中心として、この三角形をつくる第一辺、第二辺、第三辺のうち、第一面と第二面との稜線となる第一辺、及び第一面と第三面との稜線となる第二辺が残りの第三辺に接するように、可変成形部を折り畳む。   And when the folding of the square columnar corner is performed around the inner center of the triangle formed at the corner of the n-shaped surface in the state of being deformed into a square columnar shape, the sheet base material is overlapped. An n-prism having a beautiful shape can be easily obtained. Therefore, as the variable molding part, when the bag-like body is inflated into a quadrangular prism shape, the three surfaces forming one corner: the first surface, the second surface, the third surface, the first surface corner Including a triangle formed on the second surface and part of the second surface and part of the third surface. And when this variable molding part is made into a folded n-prism tank, this tank has an n-shaped surface formed by folding the triangle, a part of the second surface and a part of the third surface. It is preferable that these triangles, a part of the second surface, and a part of the third surface can be deformed as follows so as to have a folded fourth rectangular surface. Specifically, the first side, which is the ridgeline between the first surface and the second surface, and the first surface of the first side, the second side, and the third side, which are centered on the inner center of the triangle. The variable forming portion is folded so that the second side that becomes the ridge line with the third surface is in contact with the remaining third side.

より具体的に説明すると、例えば、図7(I)に示すように奥行きA×幅B×高さHという大きさの直方体から、図1(I)に示すようにA×B面が五角形である五角柱となるように、矩形状の袋状体を変形させることを考える。つまり、上記直方体から、図1(II)に示すようにA×B面の角部につくられる辺a,b,cからなる直角三角形を含む三角柱DEF(図1(VI)において灰色の部分)がなくなるように袋状体を折り畳み、図1(VII)に示すような五角柱とすることを考える。ここでは、図7(B')と同様に(A/2+B+A/2)×(A/2+H+A/2)という大きさの2枚のシート基材S1,S2からなる袋状体を利用する(図1(III),(IV)参照)。シート基材S1(図1(III)参照),シート基材S2(図1(IV)参照)において、その四隅にある(A/2)2という大きさの正方形の部分(図1(III),(IV)において灰色の部分)は、図7(B')に示す袋状体bBの作製に用いられたシート基材と同様に、袋状体を四角形状に変形する際(図1(V))、シート基材同士が重なり合う重複部iBをつくる箇所となる。ここでは、シート基材S1において、A/2×B面の角部に設けられる辺a,b,cからなる直角三角形DEF(図1(III)において灰色の部分)、及びB×H面の一部であって直角三角形DEFの辺b(辺DE)に接する長方形Dff'D'(図1(III)において灰色の部分)、A/2×H面の一部であって長方形Dff'D'と同じ大きさである長方形Dee'D'(同)が、袋状体を五角形状に変形する際(図1(VII)参照)、シート基材同士が重なり合う箇所となるように折り畳まれる場合を説明する。このような2枚のシート基材S1,S2の縁部を接合して、(A/2+B+A/2)×(A/2+H+A/2)の矩形状の袋状体を作製し、図1(V)に示すように直方体状となるように袋状体を膨らませ折り目(図1において一点鎖線で示す)に沿って折り畳む。このとき、袋状体の角部にある(A/2)2の正方形を図2(I)に示すように折り目l1が山となるように折り、図1(V),図2(I')に示すように二等辺三角形状の重複部iBをつくる。次に、これら四つの重複部iBが四角柱状の一面:ここではA×B面に接するように図2(II)に示す折り目l2が谷となるように折る。すると、図1(VI),図2(II')に示すようにA×B面の角部につくられる直角三角形DEFの一部に重複部iBが重ね合わされた状態の直方体を得る。 More specifically, for example, from a rectangular parallelepiped having a depth A × width B × height H as shown in FIG. 7 (I), the A × B plane is a pentagon as shown in FIG. 1 (I). Consider deforming a rectangular bag-like body to form a pentagonal prism. That is, from the above rectangular parallelepiped, as shown in FIG. 1 (II), a triangular prism DEF including a right triangle composed of sides a, b, and c formed at the corners of the A × B plane (gray portion in FIG. 1 (VI)) Let's consider folding the bag-like body so that it disappears to form a pentagonal prism as shown in Fig. 1 (VII). Here, as in FIG. 7 (B ′), two sheet base materials S 1 and S 2 having a size of (A / 2 + B + A / 2) × (A / 2 + H + A / 2) are used. (See FIGS. 1 (III) and (IV)). In the sheet base material S 1 (see FIG. 1 (III)) and the sheet base material S 2 (see FIG. 1 (IV)), square portions (A / 2) 2 at the four corners (FIG. 1 ( (III) and (IV) are gray portions), when the bag-like body is deformed into a square shape, similar to the sheet base material used for the production of the bag-like body b B shown in FIG. FIG. 1 (V)) is a place where an overlapping portion i B where the sheet base materials overlap each other is formed. Here, in the base sheet S 1, A / 2 × B face of the corner portion provided side a, b, at right angles consisting of c triangle DEF (gray area in FIG. 1 (III)), and B × H surface A rectangle Dff'D '(gray portion in FIG. 1 (III)) that touches the side b (side DE) of the right triangle DEF, a part of the A / 2 × H plane and the rectangle Dff' A rectangular Dee'D '(same size) as D' is folded so that the sheet base material overlaps when the bag-like body is transformed into a pentagon (see Fig. 1 (VII)). Explain the case. By joining the edges of such two sheet base materials S 1 and S 2 , a rectangular bag of (A / 2 + B + A / 2) × (A / 2 + H + A / 2) A bag-like body is produced so as to have a rectangular parallelepiped shape as shown in FIG. 1 (V), and is folded along a fold line (indicated by a one-dot chain line in FIG. 1). At this time, the square of (A / 2) 2 at the corner of the bag-like body is folded so that the crease l 1 is a mountain as shown in FIG. 2 (I), FIG. 1 (V), FIG. As shown in '), an isosceles triangular overlapping portion i B is created. Then, these four overlapping portion i B is one side of the square column: folding to fold l 2 shown in FIG. 2 (II) in contact with A × B surface is valley here. Then, as shown in FIGS. 1 (VI) and 2 (II ′), a rectangular parallelepiped is obtained in which the overlapping portion i B is superimposed on a part of the right triangle DEF formed at the corner of the A × B plane.

この奥行きA×幅B×高さHの直方体において直角三角形DEFを有するA×B面を第一面、長方形Dff'D'を有するB×H面を第二面、長方形Dee'D'を有するA×H面を第三面とする。このとき、直角三角形DEFにおいて辺DE(辺b)が第一辺、辺DF(辺a)が第二辺、辺EF(辺c)が第三辺となる。また、直角三角形DEFの内心をO、この内心Oからの垂線と辺DF(辺a)との交点をe、同辺DE(辺b)との交点をf、同辺EF(辺c)との交点をdとする。そして、この直角三角形DEFにおいて辺DE(第一辺)と辺DF(第二辺)とが辺EF(第三辺)に接するように内心Oを中心として直方体状の角部を折り畳む。   In this rectangular parallelepiped of depth A × width B × height H, the A × B surface having the right triangle DEF is the first surface, the B × H surface having the rectangle Dff′D ′ is the second surface, and the rectangle Dee′D ′ is included. The A × H surface is the third surface. At this time, in the right triangle DEF, the side DE (side b) is the first side, the side DF (side a) is the second side, and the side EF (side c) is the third side. Also, the inner center of the right triangle DEF is O, the intersection of the perpendicular from the inner center O and the side DF (side a) is e, the intersection of the side DE (side b) is f, and the side EF (side c) is Let the intersection of be d. Then, in this right triangle DEF, the corners of the rectangular parallelepiped shape are folded around the inner center O so that the side DE (first side) and the side DF (second side) are in contact with the side EF (third side).

具体的には、図2(III')に示すように辺bの一部である辺Dfが辺aの一部である辺Deに接するように、即ち、点eと点fとが接するように直線ODが谷となるように折り曲げる。また、辺bの一部である辺fEが辺cの一部である辺dEに接するように、即ち、点fと点dとが接するように直線OEが谷となるように折り曲げ、辺aの一部である辺eFが辺cの一部である辺dFに接するように、即ち、点eと点dとが接するように直線OFが谷となるように折り曲げる。従って、点eと点fとが点dに接する。次に、図3(IV')に示すように重なり合わされた三角形ODf及び三角形ODeの辺De(辺Df)も辺EFに接するように折り曲げる。更に、図2(III')に示すように第二面と第三面との稜線DD'(図1参照)が谷、第二面の直線ff'(同)が山、直線EE'が山、直線FF'が山となるように第二面及び第三面を折り畳む。このように折り畳むことで、第二面の一部及び第三面の一部からつくられる第四面:長方形EE'F'F(図1(VII)参照)を具える五角柱を得る。なお、ここでは、第三面の直線ee'を折らず、第二面の直線ff'が山となるように、即ち、長方形DD'f'fが長方形EE'f'fに接するように折り畳む例を説明したが、第二面の直線ff'を折らず、第三面の直線ee'が山となるように、即ち、長方形DD'e'eが長方形FF'e'eに接するように折り畳んでもよい。   Specifically, as shown in FIG. 2 (III '), the side Df that is a part of the side b touches the side De that is a part of the side a, that is, the point e and the point f touch each other. Fold it so that the straight OD is a valley. Further, the side f is bent so that the side fE that is a part of the side b is in contact with the side dE that is a part of the side c, that is, the point f and the point d are in contact with each other, and the side a The line OF is bent so that the side eF is in contact with the side dF which is a part of the side c, that is, the point OF is in contact with the point d. Therefore, point e and point f touch point d. Next, as shown in FIG. 3 (IV ′), the triangle ODf and the side De (side Df) of the triangle ODe that are overlapped are also bent so as to be in contact with the side EF. Further, as shown in FIG. 2 (III '), the ridge line DD' (see FIG. 1) between the second surface and the third surface is a valley, the straight line ff '(same) on the second surface is a mountain, and the straight line EE' is a mountain. The second and third surfaces are folded so that the straight line FF ′ is a mountain. By folding in this way, a pentagonal column having a fourth surface made of a part of the second surface and a part of the third surface: a rectangle EE′F′F (see FIG. 1 (VII)) is obtained. Here, the straight line ee ′ on the third surface is not folded, and the straight line ff ′ on the second surface is folded so that it is a mountain, that is, the rectangle DD′f′f is in contact with the rectangle EE′f′f. Although the example has been explained, the straight line ff 'on the second surface is not folded, and the straight line ee' on the third surface is a mountain, that is, the rectangle DD'e'e touches the rectangle FF'e'e. It may be folded.

この五角柱は、図1(VII)、図3(IV)に示すように第四面の中間部に第二面及び第三面の両面の合わせ目である直線ff'が表れ、シート基材が重ね合わされた部分がタンクの内側に折り曲げられて外見から重ね合わせ部分が見えない構成である。具体的には、重なり合わされた三角形ODF、三角形ODf、かつ三角形OEfは三角形OEFに重なり合わされて五角形の第一面の裏側に接するように折り畳まれ(図3(IV')参照)、重なり合わされた長方形DD'e'e及び長方形DD'f'fは、長方形EE'f'f又は長方形FF'e'eの裏側に接するように折り畳まれる(図3(IV)では、長方形EE'f'fに接した状態を示す)。なお、図2(III),図2(III'),図3(IV),図3(IV'),後述する図4において重複部iBは省略している。 In this pentagonal column, as shown in FIGS. 1 (VII) and 3 (IV), a straight line ff ′ that is a joint of both the second surface and the third surface appears in the middle of the fourth surface, and the sheet base material In this configuration, the overlapped portion is folded inside the tank so that the overlapped portion cannot be seen from the outside. Specifically, the overlapped triangle ODF, triangle ODf, and triangle OEf were overlapped with the triangle OEF and folded so as to contact the back side of the first surface of the pentagon (see FIG. 3 (IV ′)) and overlapped. The rectangle DD'e'e and the rectangle DD'f'f are folded so as to touch the back side of the rectangle EE'f'f or the rectangle FF'e'e (in Fig. 3 (IV), the rectangle EE'f'f Shows the state of touching. Incidentally, FIG. 2 (III), Fig. 2 (III '), FIG. 3 (IV), FIG. 3 (IV'), overlapping part i B in FIG. 4 to be described later are omitted.

上記の例では、第四面:長方形EE'F'Fに合わせ目として直線ff'が表れるように折り畳む例を説明したが、第四面に合わせ目として第二面と第三面との稜線DD'が表れるように折り畳んでもよい。例えば、上記と同様に直線OD,OE,OFが「谷」となるように折り曲げ、図4(I')に示すように稜線DD'が山、直線ff'が谷(或いは直線ee'が谷)、直線EE'が山、直線FF'が山となるように第二面及び第三面を折り畳むと、図4(I)に示すように稜線DD'が長方形EE'F'Fに表れる(図4(I)では、直線ff'が谷となり、折られていない直線ee'が第四面の表面に表れている状態を示す)。また、上記の例では、上記重ね合わせ部分が全てタンクの内側(裏側)に隠されるように折り畳む例を説明したが、直線OD,OE,OFが「山」となるように折り曲げ、図4(II)に示すように上記重ね合わせ部分の一部がタンクの(外側)表側に露出されるように折り曲げてもよい。このとき、稜線DD'が山、直線ff'が谷(或いは直線ee'が谷)、直線EE'が山、直線FF'が山となるように第二面及び第三面を折り畳む(図4(II)では、直線ff'が谷となり、折られていない直線ee'が第四面の表面に表れている状態を示す)。また、図4(II)では、三角形OEFが五角形の第一面に接するように折り畳んでいる例を示すが、三角形OEFが第四面:長方形EE'F'Fに接するように折り畳んでもよい。   In the above example, the example has been described in which the fourth surface: the rectangle EE′F′F is folded so that the straight line ff ′ appears as a joint, but the ridgeline between the second surface and the third surface as the joint on the fourth surface You may fold so that DD 'appears. For example, as described above, the straight lines OD, OE, and OF are folded so as to be “valley”, and the ridge line DD ′ is a mountain and the straight line ff ′ is a trough (or the straight line ee ′ is a trough as shown in FIG. 4 (I ′). ), When the second and third surfaces are folded so that the straight line EE ′ is a mountain and the straight line FF ′ is a mountain, a ridge line DD ′ appears in a rectangle EE′F′F as shown in FIG. FIG. 4 (I) shows a state in which the straight line ff ′ is a valley and the unfolded straight line ee ′ appears on the surface of the fourth surface). Further, in the above example, the example in which the overlapping portion is folded so as to be all hidden behind the tank (back side) has been described, but the straight lines OD, OE, OF are folded so as to be `` mountains '', and FIG. As shown in II), a part of the overlapped portion may be bent so as to be exposed to the (outer) front side of the tank. At this time, the second surface and the third surface are folded so that the ridge line DD ′ is a mountain, the straight line ff ′ is a valley (or the straight line ee ′ is a valley), the straight line EE ′ is a mountain, and the straight line FF ′ is a mountain (FIG. 4). (II) shows a state in which the straight line ff ′ is a valley and the unfolded straight line ee ′ appears on the surface of the fourth surface). 4 (II) shows an example in which the triangle OEF is folded so as to be in contact with the first surface of the pentagon, but the triangle OEF may be folded so as to be in contact with the fourth surface: the rectangle EE′F′F.

本発明タンクは、矩形状のシート基材からなり、平面状に折り畳まれた状態において矩形状の袋状体であり、この袋状体に上述のような可変成形部を具えることで、設置現場において簡単に多角柱状のタンクを形成することができる。また、本発明タンクは、多角形状のシート基材からなり、平面状に折り畳まれた状態において多角形状の袋状体を用いて同一体積のタンクを得る場合と比較して、重ね合わされる部分を形成するシート基材量、即ち、無駄となるシート基材量を低減することができる。例えば、図1(III),(IV)に示す矩形状のシート基材を用いて図1(I)に示す五角柱を得る場合と、図1(I)に示す五角柱と同じ体積を有する図10(III)に示す五角柱を図10(I)に示す五角形状のシート基材を用いて得る場合とを比較する。図1(III),(IV),図10(I)において、シート基材が無駄となる箇所は、灰色で示す。図1に示すタンクにおいてシート基材が無駄となる量は、以下のように求められる。なお、直角三角形DEFの内心Oから点d,e,fまでの距離をrとする。また、H>B>Aとする。   The tank of the present invention is made of a rectangular sheet base material and is a rectangular bag-like body in a state of being folded into a flat shape, and the bag-like body is provided with a variable molding portion as described above. A polygonal columnar tank can be easily formed on site. In addition, the tank of the present invention is made of a polygonal sheet base material, and compared with the case where a tank having the same volume is obtained using a polygonal bag-like body in a state of being folded into a flat shape, The amount of sheet base material to be formed, that is, the amount of wasted sheet base material can be reduced. For example, when the pentagonal prism shown in FIG. 1 (I) is obtained using the rectangular sheet base material shown in FIGS. 1 (III) and (IV), it has the same volume as the pentagonal prism shown in FIG. 1 (I). The case where the pentagonal column shown in FIG. 10 (III) is obtained by using the pentagonal sheet base material shown in FIG. 10 (I) is compared. In FIG. 1 (III), (IV), and FIG. 10 (I), the portion where the sheet base material is wasted is shown in gray. The amount of wasted sheet base material in the tank shown in FIG. 1 is obtained as follows. Note that the distance from the inner center O of the right triangle DEF to the points d, e, and f is r. Further, H> B> A.

Figure 2006347583
Figure 2006347583

一方、図10において、五角形の一辺をc、この辺cを斜辺とする直角三角形の頂点をMNL(斜辺c=辺ML)、辺cに平行な直線を直線PT、点Mからの垂線と直線PTとの交点をp、点Lからの垂線と直線PTとの交点をt、点Nからの垂線と長さBの辺に平行な直線PQとの交点をq、点Nからの垂線と長さAの辺に平行な直線TSとの交点をs、直線Pq(直線Pp)の長さをx、直線Tt(直線Ts)の長さをy、∠pMqをα、∠tLsをβとすると、直角三角形MNLの∠NLM=α、∠NML=βとなる。このとき、図10に示すタンクにおいてシート基材が無駄となる量は、以下のように求められる。   On the other hand, in FIG. 10, one side of the pentagon is c, the vertex of the right triangle having the side c as the hypotenuse is MNL (hypotenuse c = side ML), a straight line parallel to the side c is the straight line PT, and the perpendicular from the point M and the straight line PT P, the intersection of the perpendicular from point L and the straight line PT, t, the intersection of the perpendicular from point N and the straight line PQ parallel to the side of length B, q, and the perpendicular and length from point N If the intersection point with the straight line TS parallel to the side of A is s, the length of the straight line Pq (straight line Pp) is x, the length of the straight line Tt (straight line Ts) is y, ∠pMq is α, and ∠tLs is β, In the right triangle MNL, ∠NLM = α and ∠NML = β. At this time, the amount of wasted sheet base material in the tank shown in FIG. 10 is obtained as follows.

Figure 2006347583
Figure 2006347583

上記の式により、図10に示す従来のタンクでは、無駄となる量がH2に比例する。ここで、H2の係数は、実用的な範囲において1.9〜2程度である。従って、図10に示すタンクでは、図7に示す直方体状のタンクよりも体積が小さいにも係わらず、無駄となる量が最も多い図7(H)のパタンのタンクと同様程度となる。これに対し、本発明タンクの場合、図7(B)のパタンのタンクにおいて無駄となる量2×A2に加えて、高さHに比例する項及び折り畳まれる三角形の面積a×bが付加されるため、一見図10に示す従来のタンクよりも無駄が多いように思われる。しかし、実用的には、H≫A、具体的には、HがAの2倍以上といった場合となることが多く、この場合、本発明タンクの方が無駄となる量を大幅に低減できる。 From the above formula, in the conventional tank shown in FIG. 10, the wasted amount is proportional to H 2 . Here, the coefficient of H2 is about 1.9 to 2 in a practical range. Accordingly, the tank shown in FIG. 10 has the same level as the tank of the pattern shown in FIG. 7 (H), which has the largest amount of waste, although the volume is smaller than that of the rectangular tank shown in FIG. On the other hand, in the case of the tank of the present invention, in addition to the amount 2 × A 2 which is wasted in the pattern tank of FIG. 7 (B), a term proportional to the height H and the area a × b of the triangle to be folded are added. Therefore, it seems that there is more waste than the conventional tank shown in FIG. However, practically, H >> A, specifically, H is more than twice that of A. In this case, the amount of waste of the tank of the present invention can be greatly reduced.

本発明において袋状体には、折り目を示すマーク部を設けておくと、設置現場において簡単に多角柱状に成形することができて好ましい。マーク部は、プリントなどにより付してもよいし、チョークやマジックペン、塗料などで記載してもよいし、ゴムシートなどを利用する場合、プレスなどで凸状又は凹状の印を付してもよい。また、マーク部は、シート基材に付しておいてもよいし、袋状体を形成してから付してもよい。もちろん可変成形部にもマーク部を付しておくことが好ましい。   In the present invention, it is preferable that the bag-like body is provided with a mark portion indicating a fold because it can be easily formed into a polygonal column shape at the installation site. The mark part may be attached by printing or the like, or may be described with chalk, a magic pen, paint, etc., or when using a rubber sheet or the like, a convex or concave mark is attached with a press or the like. Also good. The mark portion may be attached to the sheet base material or may be attached after forming a bag-like body. Of course, it is also preferable to add a mark portion to the variable molding portion.

また、本発明タンクは、n角柱状に成形したとき、折り畳んだ状態が開放されることを防止するべく、開放防止部材を具えていてもよい。例えば、上述したシート基材同士を重ね合わせて三角形状とし、多角柱状のタンクの一面に接するように折り畳まれる重複部や、四角柱状に膨らませた状態において、角部をつくる二面が折り畳まれてなる面(第四面)においてこれら二面の合わせ目は、折り畳んだ状態が開放されると、n角柱状に形状を維持することが難しい。そこで、折り畳み状態が維持できるように開放防止部材を具えることが好ましい。例えば、上記合わせ目の開放を防止する場合、合わせ目をつくる二面を連結できるような開放防止部材を具えるとよい。具体的には、開放防止部材として紐付き部材などを利用し、上記二面において合わせ目近傍に紐付き部材を配置し、両紐を結ぶことで合わせ目の開放を防止することが挙げられる。重複部と接触面とにもこのような紐付き部材を配置しておき、両紐を結ぶことで開放を防止できる。また、開放防止部材として面ファスナなどの着脱が容易な部材を利用し、上記二面において対向する面や、重複部と接触面とにおいて対向する面に面ファスナを配置し、両面ファスナを接着することで開放を防止することが挙げられる。このような開放防止部材を具えることで、長期に亘り所定の形状をより確実に維持することができる。   In addition, the tank of the present invention may include an opening prevention member so as to prevent the folded state from being released when it is formed into an n-prism shape. For example, in the state where the above-mentioned sheet base materials are overlapped to form a triangular shape and folded so as to be in contact with one surface of a polygonal column-shaped tank, or in a state where it is inflated into a quadrangular column shape, two surfaces that form a corner are folded. It is difficult to maintain the shape of the joint of these two surfaces on the surface to be formed (fourth surface) in an n-prism shape when the folded state is released. Therefore, it is preferable to provide an opening preventing member so that the folded state can be maintained. For example, in order to prevent the seam from being opened, it is preferable to provide an opening preventing member that can connect two surfaces forming the seam. Specifically, a member with a string is used as an opening preventing member, a member with a string is arranged in the vicinity of the joint on the two surfaces, and the opening of the joint is prevented by tying both strings. Such a stringed member is also arranged on the overlapping portion and the contact surface, and opening can be prevented by tying both strings. In addition, a member that can be easily attached and detached, such as a hook-and-loop fastener, is used as an opening prevention member, and a hook-and-loop fastener is bonded to a surface facing the two surfaces or a surface facing the overlapping portion and the contact surface. It is possible to prevent opening. By providing such an opening prevention member, a predetermined shape can be more reliably maintained over a long period of time.

その他、本発明タンクには、液体を導入するための導入口や、液体を排出するための排出口など、タンクの用途に応じて適宜必要な部材を具えるとよい。   In addition, the tank of the present invention may be provided with necessary members according to the use of the tank, such as an inlet for introducing liquid and an outlet for discharging liquid.

上記構成を具える本発明タンクは、種々の液体を貯留するのに好適に利用することができる。特に、本発明タンクを上述した絶縁性、耐酸性などの性質を有するゴムシートにて形成した場合、レドックスフロー電池システムにおいてバナジウムイオン溶液などの電解液を貯留するタンクとして好適に利用できる。   The tank of the present invention having the above configuration can be suitably used for storing various liquids. In particular, when the tank of the present invention is formed of the above-described rubber sheet having properties such as insulation and acid resistance, it can be suitably used as a tank for storing an electrolyte such as a vanadium ion solution in a redox flow battery system.

本発明タンクは、平面状に折り畳まれた状態において矩形状の袋状体を膨らませて立体状のタンク本体を形成するため、直方体状のタンクを主体として設計することができる。具体的には、矩形状の袋状体の基となるシート基材が矩形状でよいため、設計が非常に容易である。従って、例えば、五角柱状のタンクを得るにあたり、従来のように五角形状の袋状体を得るべく五角形状のシート基材を設計する必要がなく、作業性に優れる。また、本発明タンクは、上記矩形状の袋状体を折り畳むことで所望の多角柱状に成形することができるため、設置現場においても簡単に多角柱状のタンクとすることができる。特に、本発明タンクが幅や奥行きに比較して高さの大きいタンクであるとき、従来の五角形状の袋状体を折り畳んで五角柱状に成形する場合と比較して、シート基材同士が重なり合わされ、本質的にタンクに利用されない部分を形成するシート基材の量を大幅に削減することができる。   Since the tank of the present invention forms a three-dimensional tank body by inflating a rectangular bag-like body in a state of being folded flat, it can be designed mainly with a rectangular parallelepiped tank. Specifically, since the sheet base material that forms the base of the rectangular bag-like body may be rectangular, the design is very easy. Therefore, for example, in obtaining a pentagonal columnar tank, it is not necessary to design a pentagonal sheet base material in order to obtain a pentagonal bag-like body as in the prior art, and the workability is excellent. Moreover, since the tank of the present invention can be formed into a desired polygonal column by folding the rectangular bag-like body, it can be easily formed into a polygonal column at the installation site. In particular, when the tank of the present invention is a tank having a large height compared to the width and depth, the sheet base materials overlap each other as compared with the case of folding a conventional pentagonal bag-like body into a pentagonal column shape. The amount of sheet substrates that are combined and form a portion that is essentially not utilized in the tank can be greatly reduced.

以下、本発明の実施の形態を説明する。
本発明タンクは、内部に液体を貯留可能なタンクであり、図1(I)に示すように五角柱状である。このタンクは、図1(III),(IV)に示すように2枚の矩形状のシート基材S1,S2の縁部を接合して、平面状に折り畳まれた状態で矩形状の袋状体を立体状に膨らませてなるものである。この袋状体は、図1(VI)に示すように直方体状に形成可能であり、直方体の角部に相当する箇所を折り畳むことで、図1(VII)に示す五角柱状に成形される。本例に示すタンクは、奥行きA×幅B×高さHの直方体から、辺a,b,cからなり面積が(a×b)/2の直角三角形DEFを有する高さHの三角柱を除いた大きさを有する五角柱状のタンクである。
Embodiments of the present invention will be described below.
The tank of the present invention is a tank capable of storing liquid therein, and has a pentagonal prism shape as shown in FIG. As shown in FIGS. 1 (III) and (IV), this tank is joined to the edges of two rectangular sheet base materials S 1 and S 2 and is folded in a flat shape. A bag-like body is inflated into a three-dimensional shape. This bag-like body can be formed in a rectangular parallelepiped shape as shown in FIG. 1 (VI), and is formed into a pentagonal prism shape shown in FIG. 1 (VII) by folding a portion corresponding to a corner portion of the rectangular parallelepiped. The tank shown in this example is a rectangular parallelepiped having a depth A, a width B, and a height H, except for a triangular prism with a height H having a right-angled triangle DEF having sides (a × b) / 2 consisting of sides a, b, and c. This is a pentagonal tank with a large size.

本例においてタンクを形成するシート基材S1,S2は、有機繊維からなる基布の両面にゴム層を被覆したゴムシートを用いて作製した。このゴムシートは、ポリプロピレン繊維を目開き状態で平織りした基布の両面に、EPDMゴムシートをカレンダー加工により被覆したものを複数積層した後、蒸気加硫釜にてゴム層の蒸気加硫を行って作製した。そして、このゴムシートを所定の寸法((A+B)×(A+H)、糊代部を除く)に裁断して図1(III),(IV)に示す長方形状のシート基材S1,S2を得た。袋状体は、これらシート基材を重ね合わせ、その縁部において、重ね合わせたシート基材間に未加硫ゴムからなるゴムテープを配置し、ゴムテープを配置した箇所を加圧すると共に加熱して、ゴムテープを加硫してシート基材同士を接合することにて作製した。なお、図1(III),(IV)では、接合される縁部の面積を省略している。また、接合箇所以外においても、加熱プレス加工を施し、ゴム層に含有されるボイドを形成するガスを追い出すようにしてもよい。更に、シート基材S1,S2には、折り目がわかり易いようにマーク部(図1(III),(IV)では、一点鎖線で示す)を設けている。本例においてマーク部は、塗料にて設けた。 In this example, the sheet base materials S 1 and S 2 forming the tank were prepared using rubber sheets in which a rubber layer was coated on both surfaces of a base fabric made of organic fibers. This rubber sheet is made by laminating a plurality of EPDM rubber sheets coated by calendering on both sides of a plain fabric with a plain weave of polypropylene fibers and then steam vulcanizing the rubber layer in a steam vulcanizer. Made. Then, this rubber sheet is cut into a predetermined dimension ((A + B) × (A + H), excluding the glue margin), and a rectangular sheet substrate S shown in FIGS. 1 (III) and (IV). 1 , S 2 was obtained. The bag-like body is obtained by superimposing these sheet base materials, and at the edge thereof, a rubber tape made of unvulcanized rubber is placed between the superposed sheet base materials, and the place where the rubber tape is placed is pressurized and heated, It was prepared by vulcanizing rubber tape and joining sheet base materials together. In FIGS. 1 (III) and (IV), the area of the edge to be joined is omitted. Moreover, you may make it also heat-press-process in places other than a joining location, and drive out the gas which forms the void contained in a rubber layer. Further, the sheet bases S 1 and S 2 are provided with mark portions (indicated by a one-dot chain line in FIGS. 1 (III) and (IV)) so that the folds can be easily understood. In this example, the mark portion is provided with paint.

上記袋状体において、特に、三角形DEFの内心Oを中心として辺a(辺DF)と辺b(辺DE)とを辺c(辺EF)に接するように折り畳むことで図1(VII)に示すような五角柱状のタンクとすることができる。より具体的には、まず、袋状体を膨らませて図1(V)に示す直方体状となるように、図1(III),(IV)に示す(A/2)2の大きさの正方形を折り目に沿って折り畳み(図2(I')参照)、二等辺三角形状の重複部iBを形成する。この重複部iBを直方体においてA×B面に接するように折り畳み(図2(II')参照)、図1(VI)に示す直方体が得られる。次に、図2(III')に示すように三角形DEFにおいてその内心Oを中心として折り畳む。具体的には、内心Oからの垂線と辺DFの交点をe、同辺DEとの交点をf、同辺EFとの交点をdとして、辺Dfと辺Deとが接するように直線ODを折り目とし、辺Efと辺Edとが接するように直線OEを折り目とし、辺Feと辺Fdとが接するように直線OFを折り目として折り畳む。このとき、三角形OEF,OEf,ODF(OFe,ODe),ODfが形成され、三角形ODeと三角形ODfとが重ね合わされ、これら重ね合わされた二つの三角形が更に三角形OEFの一部に接するように重ね合わされる。また、三角形OEf及び三角形OFeも三角形OEFの一部に接するように重ね合わされる。更に、第三面に具える長方形DD'e'e(図1(III)参照)と第二面に具える長方形DD'f'f(同)とが重ね合わされ、直線Df(De)が直線EFに接する。このように折り畳むことで、五角形状の第一面と、第二面の一部及び第三面の一部からなる第四面(長方形EE'F'F)を有する五角柱状のタンクを得る。第四面には、第二面と第三面との合わせ目として直線ff'が表れている。 In the bag-like body, in particular, by folding the side a (side DF) and the side b (side DE) so as to contact the side c (side EF) around the inner center O of the triangle DEF, FIG. It can be a pentagonal tank as shown. More specifically, first, a square of size (A / 2) 2 shown in FIGS. 1 (III) and (IV) is formed so that the bag-like body is inflated into a rectangular parallelepiped shape shown in FIG. (see FIG. 2 (I ')) folded along the fold, to form an isosceles triangular overlapping portions i B. The overlapping portion i B folded so as to contact the A × B side in a rectangular parallelepiped (see Fig. 2 (II ')), is a rectangular parallelepiped shown in Fig. 1 (VI) is obtained. Next, as shown in FIG. 2 (III ′), the triangle DEF is folded around its inner center O. Specifically, the intersection point of the perpendicular line from the inner center O and the side DF is e, the intersection point with the same side DE is f, the intersection point with the same side EF is d, and the straight line OD is touched so that the side Df and the side De touch each other A fold is made, and the straight line OE is made a fold so that the side Ef and the side Ed are in contact, and the straight line OF is made a fold so that the side Fe and the side Fd are in contact. At this time, triangles OEF, OEf, ODF (OFe, ODe), ODf are formed, the triangle ODe and the triangle ODf are overlapped, and these two overlapped triangles are further overlapped so as to touch a part of the triangle OEF. The In addition, the triangle OEf and the triangle OFe are overlapped so as to contact a part of the triangle OEF. Furthermore, the rectangle DD'e'e (see Fig. 1 (III)) provided on the third surface and the rectangle DD'f'f (same) provided on the second surface are overlapped, and the straight line Df (De) is a straight line. Contact EF. By folding in this way, a pentagonal tank having a pentagonal first surface and a fourth surface (rectangular EE′F′F) composed of a part of the second surface and a part of the third surface is obtained. On the fourth surface, a straight line ff ′ appears as a joint between the second surface and the third surface.

本発明タンクは、このように平面状に折り畳んだ状態において矩形状の袋状体を膨らませ、所望の多角形状となるように折り畳んで変形することで得られるため、設計、作製が非常に容易である。また、このように矩形状の袋状体を利用することで、折り畳みによりシート基材同士が重ね合わされる部分、即ち、タンク本体として実質的に利用されないで不要な部分(無駄となる部分)を形成するシート基材を低減することができる。例えば、図1においてA=1.6,B=H=3.8,a=0.5,b=0.9とするとき、図1に示すタンクにおいて無駄となる部分(図1(III),(IV)において灰色の部分)の面積は、上記数2の式に代入して、約7となる。一方、図10に示す五角形状のシート基材を用いたタンクの場合、無駄となる部分(図10において灰色の部分)の面積は、上記数1の式に代入して、約27.8となる。図1及び図10に示す五角柱状のタンクの表面積はいずれも、約51.3であることから、五角柱状のタンクの表面積に対して無駄となる部分の割合は、本発明タンクの場合、約13.6%であるのに対し、図10に示す従来のタンクの場合、約54.2%である。このことから、本発明タンクは、タンクの形成に用いられるシート基材に対し、無駄となる部分の割合を低減できることがわかる。   Since the tank of the present invention is obtained by inflating a rectangular bag-like body in a state of being folded into a flat shape as described above and folding it into a desired polygonal shape and deforming it, it is very easy to design and manufacture. is there. In addition, by using the rectangular bag-like body in this way, a portion where the sheet base materials are overlapped by folding, that is, an unnecessary portion (a wasteful portion) that is not substantially used as a tank body. The sheet base material to be formed can be reduced. For example, when A = 1.6, B = H = 3.8, a = 0.5, and b = 0.9 in FIG. 1, the portion that is wasted in the tank shown in FIG. 1 (the gray portion in FIGS. 1 (III) and (IV)) The area of) is approximately 7 by substituting into the above equation (2). On the other hand, in the case of the tank using the pentagonal sheet base material shown in FIG. 10, the area of the wasted portion (the gray portion in FIG. 10) is substituted into the above equation 1 to be about 27.8. Since the surface area of the pentagonal tank shown in FIGS. 1 and 10 is about 51.3, the proportion of the wasted portion relative to the surface area of the pentagonal tank is about 13.6% in the case of the tank of the present invention. On the other hand, in the case of the conventional tank shown in FIG. 10, it is about 54.2%. From this, it can be seen that the tank of the present invention can reduce the proportion of wasted parts relative to the sheet base material used for forming the tank.

図1(VII)に示すように袋状体を折り畳むことで五角柱といった多角柱状のタンクを得ることができる。しかし、単に袋状体を折り畳んだだけでは、折り畳み部分が開放されるなどして、この多角柱状の状態を長期に亘り維持できない恐れもある。そこで、折り畳み部分が開放されて多角柱状の状態が崩れることを防止するべく、開放防止部材を具えていてもよい。例えば、図1に示すタンクの場合、直線ff'及び直線ee'に沿って対向位置に紐付き部材(開放防止部材)を具えておき、直線ff'と直線ee'との間を連結するように対向配置した紐付き部材の紐を結ぶことで、直線ff'と直線ee'とでつくられれる合わせ目が開放されることを防止できる。同様に、直線EF、直線Ef(直線Ee)、直線Ff(直線Fe)に沿って対向位置に紐付き部材を具えておき、直線EFと直線Ef(直線Ee)との間、及び直線Ff(直線Fe)との間を連結するようaに紐付き部材の紐を結ぶことで、直線EFと直線Ef(直線Ee)とでつくられる合わせ目,及び直線Ff(直線Fe)とでつくられる合わせ目が開放されることを防止できる。   By folding the bag-like body as shown in FIG. 1 (VII), a polygonal columnar tank such as a pentagonal column can be obtained. However, if the bag-like body is simply folded, the folded portion may be opened and the polygonal columnar state may not be maintained for a long time. Therefore, an opening preventing member may be provided in order to prevent the folded portion from being opened and the polygonal columnar shape from collapsing. For example, in the case of the tank shown in FIG. 1, a stringed member (opening prevention member) is provided at an opposing position along the straight line ff ′ and the straight line ee ′, and the straight line ff ′ and the straight line ee ′ are connected to each other. It is possible to prevent the seam formed by the straight line ff ′ and the straight line ee ′ from being opened by tying the strings of the members with the strings arranged opposite to each other. Similarly, a stringed member is provided at an opposing position along the straight line EF, straight line Ef (straight line Ee), straight line Ff (straight line Fe), between straight line EF and straight line Ef (straight line Ee), and straight line Ff (straight line). By connecting the string of the stringed member to a so as to connect with (Fe), the joint formed by the straight line EF and the straight line Ef (straight line Ee) and the joint formed by the straight line Ff (straight line Fe) It can be prevented from being opened.

開放防止部材を具えた本発明タンクの具体例を説明する。図5及び6は、開放防止部材を具えた本発明タンクに用いるシート基材の平面図である。上記で説明したシート基材S1を用いたタンクでは、第四面:長方形EE'F'Fに直線ff'が表れるように折り畳む場合を説明したが、図5に示すシート基材1を用いたタンクでは、第四面:長方形EE'F'Fに第二面と第三面との稜線DD'が表れるように折り畳む。具体的には、稜線DD'が山、直線ff'が谷となるように折り畳み、直線ee'を折り畳まない。このとき、稜線DD'は、第二面上の直線GG'に接する。このように折り畳むことで、このタンクは、シート基材S1を用いたタンクと同様に五角形状の第一面と、第二面の一部及び第三面の一部からなる第四面(長方形EE'F'F)を有する五角柱状のタンクとなる。そして、第四面には、稜線DD'及び直線ee'が表れ、直線ff'は隠れた状態である(図4(I)参照)。なお、いずれのタンクも、直線OD,OE,OFが谷となるように折り畳んでいる。 A specific example of the tank of the present invention having an opening preventing member will be described. 5 and 6 are plan views of a sheet base material used in the tank of the present invention having an opening preventing member. In the tank using the sheet base material S 1 described above, the case where the fourth surface is folded so that the straight line ff ′ appears in the rectangle EE′F′F has been described, but the sheet base material 1 shown in FIG. 5 is used. Folded the tank so that the ridgeline DD 'between the second and third surfaces appears on the fourth surface: rectangle EE'F'F. Specifically, folding is performed so that the ridgeline DD ′ is a mountain and the straight line ff ′ is a valley, and the straight line ee ′ is not folded. At this time, the ridge line DD ′ is in contact with the straight line GG ′ on the second surface. By folding in this way, the tank has a pentagonal shape of the first surface like the tank using a sheet substrate S 1, fourth surface consisting of a portion of the part and the third surface of the second surface ( A pentagonal tank with a rectangular shape EE'F'F). The ridge line DD ′ and the straight line ee ′ appear on the fourth surface, and the straight line ff ′ is hidden (see FIG. 4 (I)). Each tank is folded so that the straight lines OD, OE, OF are valleys.

上記シート基材1,2は、例えば、四隅の正方形部分が折り畳まれて二等辺三角形状の重複部iB(図1(V),(VI)など参照)が形成される箇所の近傍、及び五角柱の一面(この例では第一面)においてこの重複部iBが接する箇所の近傍に紐付き部材10a〜10h,11a〜11hを配置している。図1(VI)に示すように重複部iBをA×B面(第一面)に接するように折り畳んだ後、例えば、紐付き部材10a,11aの紐を結ぶことで、重複部iBが五角柱の一面から離れることを防止する。同様に紐付き部材(10b,11b)、(10c,11c)、…を結ぶことで、四つの重複部iBが五角柱の一面から離れることを防止する。 The sheet bases 1 and 2 are, for example, in the vicinity of a portion where the square portions of the four corners are folded to form an isosceles triangular overlapping portion i B (see FIGS. 1 (V), (VI), etc.), and fifty-one surface of prism (in this example the first surface) leash member 10a~10h near places whose overlap portion i B contact in, are arranged 11a to 11h. As shown in FIG. 1 (VI), after folding the overlapping portion i B so as to be in contact with the A × B surface (first surface), for example, by tying the strings of the corded members 10a and 11a, the overlapping portion i B Prevent from leaving one side of the pentagonal prism. Similarly leash member (10b, 11b), (10c , 11c), ... By connecting, four overlapping portion i B is prevented from leaving from one surface of the pentagonal prism.

また、第四面(長方形EE'F'F)に表れている第二面と第三面との稜線DD’が第四面から離れないように稜線DD'と、稜線DD'が接する直線GG'の近傍に紐付き部材12,13を対向させて複数配置している。図4(II)に示すように稜線DD'が第四面に表れるように折り畳んだ後、これら紐付き部材12,13の紐を結ぶことで、重ね合せ部分が開らくことを防止する。更に、直角三角形DEF(D'E'F')の折り畳み箇所も開放されることを防止するべく、紐付き部材14a,14b,15a,15bを配置している。その他、設置状態において底面となる側には、タンクが安定して配置されるように固定部材として面ファスナ16a,16bを具える。このとき、設置場所において面ファスナ16a,16bが接着する箇所にも面ファスナを配置しておく。また、設置状態において上面となる側には、設置場所にタンクをより確実に固定できるように固定部材としてループ付き部材17を具える。本例に示すようなゴムシートからなるタンクの場合、内部に液体が充填されると、タンクが膨張して所定の形状を維持できない恐れがある。そこで、タンクの周囲は、剛性の高いもの、例えば、鉄筋コンクリート壁や鉄鋼板などで囲っておくことが好ましい。そして、このような囲いと、上記ループ付き部材17とをロープなどの紐状部材にて連結することで、タンクが囲いの外部に向かって変形することを防止し、タンクの形状をより維持し易い。更に、上面となる側には、タンクを吊り下げるための吊部材18を具える。加えて、このタンクは、液体の導入や排出を行う導入排出口19を複数設けている。   In addition, the ridge line DD 'and the ridge line DD' are in contact with each other so that the ridge line DD 'between the second surface and the third surface appearing on the fourth surface (rectangle EE'F'F) is not separated from the fourth surface. A plurality of corded members 12 and 13 are arranged in the vicinity of '. As shown in FIG. 4 (II), after folding so that the ridgeline DD ′ appears on the fourth surface, the strings 12 and 13 are tied to prevent the overlapping portion from being opened. Further, the members 14a, 14b, 15a, 15b with strings are arranged to prevent the folding portion of the right triangle DEF (D'E'F ') from being opened. In addition, surface fasteners 16a and 16b are provided as fixing members on the bottom side in the installed state so that the tank is stably disposed. At this time, the hook and loop fasteners 16a and 16b are also arranged at the place where the hook and loop fasteners are bonded. Further, a member 17 with a loop is provided as a fixing member on the upper surface side in the installed state so that the tank can be more securely fixed to the installation location. In the case of a tank made of a rubber sheet as shown in this example, if the liquid is filled inside, the tank may expand and the predetermined shape may not be maintained. Therefore, it is preferable to surround the tank with a highly rigid material such as a reinforced concrete wall or a steel plate. And by connecting such an enclosure and the looped member 17 with a string-like member such as a rope, the tank is prevented from being deformed toward the outside of the enclosure, and the shape of the tank is further maintained. easy. Further, a suspension member 18 for suspending the tank is provided on the upper surface side. In addition, this tank is provided with a plurality of inlet / outlet ports 19 for introducing and discharging liquid.

上記で説明したタンクは、絶縁性、耐酸性に優れるゴムシートにて作製されることから、バナジウムイオン溶液を電解液として利用するレドックスフロー電池システムにおいて、電解液貯留用タンクとして好適に利用できる。レドックスフロー電池システムとしては、電池反応を行うセルにて形成される電池本体と、電池本体に供給する電解液を貯留する本発明タンクと、電池本体と本発明タンク間に配置されて電解液の輸送を行う輸送路とを具える構成が挙げられる。電池本体には、直流/交流変換器を介して、発電所や需要家などの外部電力系統を接続する。このような構成を具える本発明レドックスフロー電池システムは、発電所などを充電電力源として充電を行い、需要家などを放電対象として放電を行うことができる。   Since the tank described above is made of a rubber sheet having excellent insulation and acid resistance, it can be suitably used as an electrolyte storage tank in a redox flow battery system that uses a vanadium ion solution as an electrolyte. As a redox flow battery system, a battery main body formed by a cell that performs a battery reaction, a tank of the present invention for storing an electrolyte supplied to the battery main body, a battery main body and a tank of the present invention disposed between the tank The structure provided with the transport path which carries out transportation is mentioned. An external power system such as a power plant or a consumer is connected to the battery body via a DC / AC converter. The redox flow battery system of the present invention having such a configuration can be charged with a power plant or the like as a charging power source and discharged with a consumer or the like as a discharge target.

本発明タンクは、レドックスフロー電池システムに用いられる電解液などのような液体の貯留に利用される。また、本発明タンクを具えるレドックスフロー電池システムは、負荷平準化や瞬低対策などに利用される。   The tank of the present invention is used for storing a liquid such as an electrolyte used in a redox flow battery system. Further, the redox flow battery system including the tank of the present invention is used for load leveling, a measure against voltage sag, and the like.

(I)は、五角柱状の本発明タンクの斜視図、(II)は、五角柱状の本発明タンクの上面図、(III)〜(VII)は、本発明タンクの形成手順を示すものであり、(III)は、本発明タンクに用いるシート基材の正面図であって、可変成形部を具えるシート基材を示し、(IV)は、本発明タンクに用いるシート基材の正面図、(V)は、袋状体を膨らませた状態を示す斜視図、(VI)は、袋状体を直方体状に変形させた状態を示す斜視図、(VII)は、袋状体を五角柱状に変形させた状態を示す斜視図である。(I) is a perspective view of the pentagonal columnar tank according to the present invention, (II) is a top view of the pentagonal columnar tank according to the present invention, and (III) to (VII) show the formation procedure of the tank according to the present invention. , (III) is a front view of a sheet base material used in the tank of the present invention, showing a sheet base material having a variable forming portion, (IV) is a front view of the sheet base material used in the tank of the present invention, (V) is a perspective view showing a state where the bag-like body is inflated, (VI) is a perspective view showing a state where the bag-like body is deformed into a rectangular parallelepiped shape, and (VII) is a pentagonal columnar shape. It is a perspective view which shows the state made to deform | transform. 本発明タンクにおいて矩形状の袋状体を膨らませて五角柱状に折り畳む手順を示す説明図であり、四角柱状に膨らませた状態において角部を拡大して示しており、(I)は、袋状体の隅にある正方形部分の平面図、(I')は、二等辺三角形状の重複部を形成した状態を示す斜視図、(II)は、重複部を形成した状態における平面図、(II')は、重複部を四角柱状の一面に接した状態を示す斜視図、(III)は、四角柱状の角部の平面図、(III')は、四角柱状の角部にある直角三角形の斜辺に他の二辺を接するように折り畳む状態を説明する斜視図である。In the tank of the present invention, it is an explanatory view showing a procedure for inflating a rectangular bag-like body and folding it into a pentagonal column, and shows an enlarged corner in a state in which it is inflated into a quadrangular prism, (I) is a bag-like body (I ') is a perspective view showing a state where an isosceles triangular overlapping portion is formed, (II) is a plan view in a state where the overlapping portion is formed, (II') ) Is a perspective view showing a state in which the overlapping portion is in contact with one surface of the quadrangular prism shape, (III) is a plan view of the corner portion of the quadrangular prism shape, and (III ′) is a hypotenuse of a right triangle at the corner portion of the quadrangular prism shape. It is a perspective view explaining the state folded so that two other sides may contact | connect. 本発明タンクにおいて矩形状の袋状体を膨らませて五角柱状に折り畳む手順を示す説明図であり、五角形状に折り畳まれた角部を拡大して示しており、(IV)は、五角柱状の一部を示す斜視図、(IV')は、第一面が五角形状になるように第一面、第二面、第三面の折り畳み状態を説明する斜視図である。FIG. 7 is an explanatory diagram showing a procedure for inflating a rectangular bag-like body and folding it into a pentagonal column in the tank of the present invention, showing an enlarged corner portion folded into a pentagonal shape, and (IV) is one of the pentagonal columnar shapes. (IV ′) is a perspective view illustrating a folded state of the first surface, the second surface, and the third surface so that the first surface has a pentagonal shape. (I),(II)は、本発明タンクにおいて矩形状の袋状体を膨らませて五角柱状に折り畳まれた状態を示す斜視図であって、五角形状に折り畳まれた角部を拡大して示しており、(I)は、第二面と第三面との稜線がタンクの表側に露出されるように折り畳んだ状態、(II)は、重ね合わせ部分がタンクの表側に露出されるように折り畳んだ状態を示し、(I')は、(I)の折り畳み状態を説明する斜視図である。(I), (II) is a perspective view showing a state in which a rectangular bag-like body is inflated and folded into a pentagonal column in the tank of the present invention, and shows an enlarged corner portion folded into a pentagon. (I) is folded so that the ridgeline between the second and third surfaces is exposed on the front side of the tank, and (II) is such that the overlapping portion is exposed on the front side of the tank. The folded state is shown, and (I ′) is a perspective view for explaining the folded state of (I). 開放防止部材を具える本発明タンクに用いられるシート基材の平面図であり、可変成形部を具えるものを示す。It is a top view of the sheet | seat base material used for this invention tank which provides an opening prevention member, and shows what comprises a variable shaping | molding part. 開放防止部材を具える本発明タンクに用いられるシート基材の平面図であって、図5に示すシート基材に接合されるものであり、液体の導入排出口を具えるものを示す。FIG. 6 is a plan view of a sheet base material used in the tank of the present invention having an opening prevention member, which is joined to the sheet base material shown in FIG. 5 and has a liquid introduction / discharge port. (I)は、奥行きA×幅B×高さH(H>B>A)の直方体状のタンクの斜視図、(A)は、A×B面及びB×H面にシート基材同士の合わせ目がある直方体状のタンクの斜視図、(A')は、(A)に示すタンクに用いられた袋状体の平面図、(B)は、A×B面及びA×H面にシート基材同士の合わせ目がある直方体状のタンクの斜視図、(B')は、(B)に示すタンクに用いられた袋状体の平面図、(H)は、B×H面及びA×H面にシート基材同士の合わせ目がある直方体状のタンクの斜視図、(H')は、(H)に示すタンクに用いられた袋状体の平面図である。(I) is a perspective view of a rectangular parallelepiped tank having a depth A × width B × height H (H> B> A), and (A) is a view of sheet substrates on the A × B surface and B × H surface. A perspective view of a rectangular parallelepiped tank with a seam, (A ') is a plan view of a bag-like body used in the tank shown in (A), (B) is an A × B plane and A × H plane A perspective view of a rectangular parallelepiped tank with seams between sheet base materials, (B ′) is a plan view of a bag-like body used in the tank shown in (B), (H) is a B × H surface and A perspective view of a rectangular parallelepiped tank in which the sheet base material has seams on the A × H plane, (H ′) is a plan view of the bag-like body used in the tank shown in (H). 直方体状のゴムタンクの形成手順を示す説明図であり、(I)は、シート基材の状態、(II)は、シート基材を接合して袋状にした状態、(III)は、袋体を膨らませた状態、(IV)は、袋体を直方体状に変形させた状態を示す。It is explanatory drawing which shows the formation procedure of the rectangular parallelepiped rubber tank, (I) is the state of the sheet base material, (II) is a state in which the sheet base material is joined to form a bag, (III) is the bag body (IV) shows a state in which the bag body is deformed into a rectangular parallelepiped shape. 五角形状の湧水槽設置スペースを示す模式図である。It is a schematic diagram which shows a pentagonal spring tank installation space. 従来の五角柱状のゴムタンクの形成手順を示す説明図であり、(I)は、シート基材の状態、(II)は、シート基材を接合して五角形状の袋状にした状態、(III)は、五角形状の袋体を膨らませて、五角柱状に変形させた状態を示す。It is explanatory drawing which shows the formation procedure of the conventional pentagonal columnar rubber tank, (I) is the state of the sheet base material, (II) is a state of joining the sheet base material into a pentagonal bag shape, (III ) Shows a state in which a pentagonal bag is inflated and deformed into a pentagonal column.

符号の説明Explanation of symbols

1,2 シート基材 10a〜10h,11a〜11h,12,13,14a,14b,15a,15b 紐付き部材
16a,16b 面ファスナ 17 ループ付き部材 18 吊部材 19 導入排出口
bA,bB,bH 袋状体 iA,iB,iH 重複部
l1,l2 折り目 S1,S2 シート基材 T タンク
100,110 シート基材 101 ゴムシート片 102 糊代部 103,112 袋体
104,111 折り目 105,113 重複部 106,114 ゴムタンク 115 合わせ目
200 柱 201 交差箇所
1,2 Sheet base material 10a to 10h, 11a to 11h, 12, 13, 14a, 14b, 15a, 15b
16a, 16b Hook fastener 17 Loop member 18 Suspension member 19 Inlet / outlet
b A , b B , b H bag-like body i A , i B , i H
l 1 , l 2 crease S 1 , S 2 sheet substrate T tank
100,110 Sheet base 101 Rubber sheet piece 102 Adhesive margin 103,112 Bag
104,111 Fold 105,113 Overlap 106,114 Rubber tank 115 Seam
200 pillar 201 intersection

Claims (5)

内部に液体を貯留可能なタンクであって、
このタンクは、平面状に折り畳み可能であり、かつ内部を膨らませることで四角柱状に形成可能な矩形状の袋状体を具え、
前記袋状体は、四角柱状に膨らませたときに角部に相当する箇所を折り畳むことでn角柱状(n≧5)になるように成形可能な可変成形部を有することを特徴とするタンク。
A tank that can store liquid inside,
This tank has a rectangular bag-like body that can be folded into a flat shape and can be formed into a square pillar shape by inflating the inside,
The tank according to claim 1, wherein the bag-like body has a variable forming portion that can be formed into an n-prism shape (n ≧ 5) by folding a portion corresponding to the corner portion when the bag-shaped body is inflated into a quadrangular prism shape.
前記可変成形部は、
袋状体を四角柱状に膨らませたときの角部を形成する三つの面のうち、第一面の角部につくられる三角形と、第二面の一部及び及び第三面の一部とを含み、
可変成形部を変形させてn角柱状のタンクに成形したとき、このタンクが、前記三角形が折り畳まれてなるn角形状面と、前記第二面の一部及び前記第三面の一部が折り畳まれてなる矩形状の第四面とを有するように、前記三角形の内心を中心として、この三角形をつくる第一辺、第二辺、第三辺のうち、第一面と第二面との稜線となる第一辺、及び第一面と第三面との稜線となる第二辺が残りの第三辺に接するように折り畳み可能であることを特徴とする請求項1に記載のタンク。
The variable molding part is
Of the three surfaces forming the corner when the bag-like body is inflated into a quadrangular prism, the triangle formed at the corner of the first surface, the part of the second surface, and the part of the third surface Including
When the variable molding part is deformed and molded into an n-prism tank, the tank has an n-shaped surface formed by folding the triangle, a part of the second surface and a part of the third surface. A first side, a second side, and a third side of the first side, the second side, and the third side that form the triangle around the inner center of the triangle so as to have a rectangular fourth surface that is folded. 2. The tank according to claim 1, wherein the tank is foldable so that a first side that is a ridge line of the first side and a second side that is a ridge line between the first side and the third side are in contact with the remaining third side. .
更に、前記可変成形部には、折り目を示すマーク部が施されていることを特徴とする請求項1又は2に記載のタンク。   3. The tank according to claim 1, wherein the variable molding part is provided with a mark part indicating a crease. 更に、前記可変成形部を変形させてn角柱状のタンクを成形したとき、折り畳んだ可変成形部が開放されることを防止する開放防止部材を具えることを特徴とする請求項1〜3のいずれかに記載のタンク。   Furthermore, when the variable shaped part is deformed to form an n-prism shaped tank, an open preventing member is provided for preventing the folded variable shaped part from being opened. A tank according to any one of the above. 請求項1〜4のいずれかに記載のタンクを電解液タンクとして具えることを特徴とするレドックスフロー電池システム。   5. A redox flow battery system comprising the tank according to claim 1 as an electrolyte tank.
JP2005175771A 2005-06-15 2005-06-15 Tank Pending JP2006347583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005175771A JP2006347583A (en) 2005-06-15 2005-06-15 Tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005175771A JP2006347583A (en) 2005-06-15 2005-06-15 Tank

Publications (1)

Publication Number Publication Date
JP2006347583A true JP2006347583A (en) 2006-12-28

Family

ID=37643840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005175771A Pending JP2006347583A (en) 2005-06-15 2005-06-15 Tank

Country Status (1)

Country Link
JP (1) JP2006347583A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013065508A1 (en) * 2011-11-02 2013-05-10 ソニー株式会社 Method for manufacturing fuel cell, fuel cell, and electronic device
WO2023034670A1 (en) * 2021-08-31 2023-03-09 Ess Tech, Inc. Systems and methods for flowing, storing, and rebalancing electrolyte in redox flow battery system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013065508A1 (en) * 2011-11-02 2013-05-10 ソニー株式会社 Method for manufacturing fuel cell, fuel cell, and electronic device
WO2023034670A1 (en) * 2021-08-31 2023-03-09 Ess Tech, Inc. Systems and methods for flowing, storing, and rebalancing electrolyte in redox flow battery system

Similar Documents

Publication Publication Date Title
JP4817571B2 (en) Flexible storage bag with hermetically sealed indicator
KR100952544B1 (en) Inflatable containers
JP2017193376A (en) Package bag
CN102224298B (en) Portable barrier
KR101903258B1 (en) Liquid storage container and method for folding same
US9926107B2 (en) Side-gusset bag made of a plastic film/fabric laminate
JP2006347583A (en) Tank
US3715074A (en) Standable bag made from flexible film material
CN205256991U (en) Can smoothly fill fluidic fluid container
WO2008109951A1 (en) Tank liner
CN105173401B (en) It can the smooth fluid container for filling fluid and its application
US20140205209A1 (en) Bare liner bulk bag
JP6644180B1 (en) Inflatable structure, inflatable manufacturing method, and double membrane structure
CN108328091A (en) For foil linings FIBC(Loose bags)Gas-tight seal
JP6397963B1 (en) Relief gate bag and manufacturing method thereof
US9181669B2 (en) Bladder-containing wall assemblies for containment berms
CN101715418A (en) A length of flattened tubing for forming a flexible tank, a method of fabricating a flexible tank and a flexible tank fabricated therewith
JP3084807U (en) Absorbent sandbag
JP2014156284A (en) Liquid storage bag
JP2020084667A (en) Inflatable bag body connector and inflatable bag body connected by connector
US20140050528A1 (en) Method and Apparatus for Constructing Membrane Lined Structures for Holding Large Fluid Volumes
JP6596562B1 (en) Inflatable structure and manufacturing method thereof
CN206781145U (en) A kind of clad plate for coil of strip
CN207974388U (en) Self-adhesive waterproof web
RU194938U1 (en) Reinforced geogrid