JP4381175B2 - Transport tank and transport method - Google Patents

Transport tank and transport method Download PDF

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JP4381175B2
JP4381175B2 JP2004055305A JP2004055305A JP4381175B2 JP 4381175 B2 JP4381175 B2 JP 4381175B2 JP 2004055305 A JP2004055305 A JP 2004055305A JP 2004055305 A JP2004055305 A JP 2004055305A JP 4381175 B2 JP4381175 B2 JP 4381175B2
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inner bag
transport
tank
filling
supply
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JP2005239265A (en
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芳嗣 茂泉
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Fujifilm Corp
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Fujifilm Corp
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Priority to US11/066,196 priority patent/US20050189357A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • B65D88/12—Large containers rigid specially adapted for transport
    • B65D88/128—Large containers rigid specially adapted for transport tank containers, i.e. containers provided with supporting devices for handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/04—Linings
    • B65D90/046—Flexible liners, e.g. loosely positioned in the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2590/00—Component parts, details or accessories for large containers
    • B65D2590/02—Wall construction
    • B65D2590/04—Linings
    • B65D2590/043—Flexible liners
    • B65D2590/046—Bladders

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Description

本発明は輸送タンク及び輸送方法に関するものである。   The present invention relates to a transport tank and a transport method.

船舶、鉄道、自動車などの貨物輸送において、貨物が液体の場合には、一般的にタンクコンテナが用いられる。このようなタンクコンテナとしては、国際規格であるＩＳＯ規格の例えば２０フィートタンクコンテナ（以下、単にタンクコンテナと称する。）が一般的に用いられる。このタンクコンテナは、長さが２０フィート、幅が８フィート、高さが８フィートであり、約２０トンの液体の充填が可能である。   In the case of cargo transportation such as ships, railroads and automobiles, tank containers are generally used when the cargo is liquid. As such a tank container, an ISO standard which is an international standard, for example, a 20-foot tank container (hereinafter simply referred to as a tank container) is generally used. The tank container is 20 feet long, 8 feet wide and 8 feet high, and can be filled with about 20 tons of liquid.

このようなタンクを用いたコンテナ輸送では、輸送後にタンク内を洗浄する必要があること、耐薬品性を有する高品質なステンレス鋼板を用いてタンクを製造する必要があることなどから、例えば特許文献１に示すように、タンクを一般的な鋼板で製造し、このタンク内に耐薬品性を有する軟質合成樹脂製の内袋を装填することが提案されている。また、特許文献２〜５には、同じようにタンクに内袋を装填して、洗浄などの手間を省くようにしたものが提案されている。   In container transportation using such a tank, it is necessary to clean the tank after transportation, and it is necessary to manufacture a tank using a high-quality stainless steel plate having chemical resistance. As shown in FIG. 1, it has been proposed to manufacture a tank with a general steel plate and to load an inner bag made of a soft synthetic resin having chemical resistance into the tank. Further, Patent Documents 2 to 5 propose a method in which an inner bag is similarly loaded in a tank so as to save time and effort for cleaning.

特開昭６１−１０４９８３号公報JP-A 61-104983 特開２００１−３５４２９２号公報JP 2001-354292 A 実開昭６１−４８１９０号公報Japanese Utility Model Publication No. 61-48190 特開昭５０−４６１５号公報Japanese Patent Laid-Open No. 50-4615 実開昭５７−４６４９２号公報Japanese Utility Model Publication No. 57-46492

しかしながら、上記従来の内袋を有するタンクやタンクコンテナ等については、特許文献１〜５のように種々の提案がなされているものの、２０フィートタンクコンテナなどの大型のタンクに対して、適切な内袋を製造することが困難であり、実用化されていないのが現状である。すなわち、長さが２０フィート、幅が８フィート、高さが８フィートの円筒状タンクに適合する内袋を簡単に安価に製造することが困難であった。   However, as for the tanks and tank containers having the conventional inner bags, various proposals have been made as in Patent Documents 1 to 5, but it is appropriate for a large tank such as a 20-foot tank container. Currently, it is difficult to manufacture the bag and it has not been put into practical use. That is, it has been difficult to easily and inexpensively manufacture an inner bag suitable for a cylindrical tank having a length of 20 feet, a width of 8 feet, and a height of 8 feet.

例えば、タンクコンテナの形状に適合した内袋としては、タンクコンテナとほぼ同形状の円筒体状が理想的である。しかし、この場合には筒状フイルムの両端部に円形状蓋フイルムを溶着する必要があり、円形状蓋フイルムの形成、これの溶着といった手間を要し、製造が困難である。しかも、円形状蓋フイルムの溶着では、二次元方向での溶着が不可能であり、三次元方向での溶着となるため、これらフイルムを溶着するためのガイド装置などに専用のものが必要になるという問題もある。   For example, as the inner bag adapted to the shape of the tank container, a cylindrical body having substantially the same shape as the tank container is ideal. However, in this case, it is necessary to weld a circular lid film to both ends of the cylindrical film, and it takes time and labor to form the circular lid film and weld it, which makes it difficult to manufacture. Moreover, in the welding of the circular lid film, it is impossible to weld in the two-dimensional direction, and the welding is performed in the three-dimensional direction. Therefore, a dedicated guide device for welding these films is required. There is also a problem.

これに対して、封筒型の内袋とすることで、単に筒状フイルムの両端部を溶着するだけでよく、製造が容易になる。この内袋では、タンクの給排口に内袋の給排口をセットすることにより、液体がタンク内面に直に接触することがなくなる。したがって、内袋を取り替えることにより、従来必要であったタンク内の洗浄処理が不要になる。   On the other hand, by using an envelope-type inner bag, it is only necessary to weld both ends of the cylindrical film, which facilitates manufacture. In this inner bag, by setting the inlet / outlet of the inner bag at the inlet / outlet of the tank, the liquid does not directly contact the inner surface of the tank. Therefore, by replacing the inner bag, the cleaning process in the tank, which has been conventionally required, becomes unnecessary.

しかしながら、このような内袋を開発する過程で以下のような不具合が発生することが判った。すなわち、タンクの輸送量に近いほぼ満載状態と、満載にならない未満載状態とでは、輸送中の内袋の挙動が異なり、未満載状態で輸送をすると、内袋内での輸送物の流動とともに内袋がタンク内で動き、この動きによって内袋の破裂や給排口などからの亀裂発生、及び内袋の捩れ、反転などによる輸送物の排出不能が発生することがあり、改善が望まれていた。   However, it has been found that the following problems occur in the process of developing such an inner bag. In other words, the behavior of the inner bag during transportation differs between the almost full load state that is close to the tank transport amount and the less loaded state that does not become full, and when transported in the less loaded state, the flow of the transported goods in the inner bag The inner bag moves in the tank, and this movement may cause rupture of the inner bag, cracks from the supply / discharge port, etc., and twisting and turning of the inner bag may cause the inability to discharge the transported goods. It was.

本発明は上記課題を解決するためになされたものであり、未満載状態で輸送しても内袋が破損することがないようにした輸送タンク及び輸送方法を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a transport tank and a transport method in which an inner bag is not damaged even when transported in a less loaded state.

上記目的を達成するために、本発明の輸送タンクは、横置きの円筒体の両端を塞いであり、上部にハッチを、下部の一端にタンク給排口を有するタンク本体と、このタンク本体の内部に前記ハッチから入れられて、前記タンク給排口に嵌合される内袋給排口を有し、この内袋給排口により該タンク本体内に着脱自在に装着され、前記内袋給排口から輸送物が入れられる封筒型の輸送内袋と、前記輸送物が入れられた前記輸送内袋と前記タンク本体の上部内面との空間に配置され、前記ハッチに対応した位置に設けられる充填物給排口を有し、この充填物給排口からの充填物の充填により膨出して輸送中の前記輸送内袋の移動を抑える封筒型の押え内袋とを有することを特徴とする。 In order to achieve the above object, a transport tank according to the present invention closes both ends of a horizontal cylindrical body , has a tank body having a hatch at the top and a tank supply / discharge port at one end of the bottom, and a tank body of the tank body. There is an inner bag supply / exhaust port that is inserted from the hatch inside and fitted into the tank supply / exhaust port. The inner bag supply / exhaust port is detachably mounted in the tank body, It is arranged in a space corresponding to the hatch, and is arranged in a space between an envelope-type transport inner bag into which transported goods are put from a discharge port, the transport inner bag into which the transported goods are put, and an upper inner surface of the tank body. An envelope-type presser inner bag that has a filler supply / discharge port and bulges by filling the filler from the filler supply / discharge port to suppress the movement of the transport inner bag during transport. .

また、本発明の輸送方法は、上記輸送タンクを用いて、前記輸送内袋に輸送物を入れて輸送する輸送方法において、前記押え内袋に充填物を予備充填する押え内袋の予備充填工程と、前記予備充填をしながら又は予備充填後に、前記輸送物を前記タンク本体の容量よりも少ない未満載状態として前記輸送内袋へ前記輸送物を入れる輸送物充填工程と、前記押え内袋に充填物を充填し、前記充填物の充填により前記内袋を膨出させて前記未満載状態の輸送内袋の前記タンク本体内での移動を抑えるための押え内袋本充填工程と、前記押え内袋本充填工程後に前記輸送タンクを用いて輸送を行う輸送工程とを有することを特徴とする。なお、前記輸送内袋から前記輸送物を排出する輸送物排出工程を前記輸送工程の後に行い、この輸送物排出工程では、前記輸送物の排出時に、前記押え内袋に前記充填物を入れて前記輸送物に背圧をかけることが好ましい。 Further, the transport method of the present invention is a transport method for transporting the transport inner bag by transporting the transport inner bag using the transport tank, wherein the presser inner bag is pre-filled with a pre-filling step. And during or after the preliminary filling, the transported material filling step of placing the transported material in the transport inner bag with the transported material less than the capacity of the tank body, and the presser inner bag. A presser inner bag main filling step for filling the filler, and suppressing the movement of the transported inner bag in the lower load state within the tank body by inflating the inner bag by filling the filler; and the presser And a transporting step of transporting using the transport tank after the inner bag main filling step. In addition, a transporting material discharging step for discharging the transported material from the transporting inner bag is performed after the transporting step, and in the transporting material discharging step, the filling material is put into the presser inner bag when the transporting material is discharged. It is preferable to apply a back pressure to the package.

本発明では、輸送物が入れられた輸送内袋と前記タンク本体の内面との空間に押え内袋を設け、この押え内袋に充填物を充填して膨出させ輸送中の輸送内袋の移動を抑えるようにしたから、輸送物が内袋に満載されていない状態での輸送において、輸送内袋の移動に起因して発生する輸送内袋の破損や、輸送内袋の捩れまたは反転による輸送物の排出不良がなくなる。また、輸送内袋へ輸送物を入れる前または入れるのと同時に、前記押え内袋に一定量の充填物を予備充填して押え内袋の形を整えておくことにより、輸送物を輸送内袋へ入れるときに、折り畳まれた状態の押え内袋が輸送内袋とタンク本体内面との間に挟まれてしまうことがなくなり、後の押え内袋への充填物の充填時にこの挟まれた部分で充填不能になったり、押え内袋が破裂したりすることがなくなる。   In the present invention, a presser inner bag is provided in the space between the transport inner bag in which the transported goods are placed and the inner surface of the tank body, and the presser inner bag is filled with the filler and inflated to allow the transport inner bag to be transported. Since the movement is restrained, the transport bag is not fully loaded, and the transport inner bag is damaged due to the movement of the transport inner bag, or the transport inner bag is twisted or reversed. Eliminate defective discharge of transported goods. Also, before or at the same time as putting the transported goods in the transport inner bag, by pre-filling the presser inner bag with a predetermined amount of the filler, and adjusting the shape of the presser inner bag, The presser inner bag that has been folded is not pinched between the transport inner bag and the inner surface of the tank body when it is inserted into the bag, and this pinched portion is filled when filling the presser inner bag. This prevents the filling from becoming impossible and the inner bag of the presser from rupturing.

図１は２０フィートのＩＳＯタンクコンテナ１０を示しており、タンク本体１１とこれを保持するフレーム１２とから構成されている。タンク本体１１の上部には、メンテナンスや液注入などを行うためのハッチ１３が形成されており、このハッチ１３は蓋１４によって覆われて、輸送時には蓋１４が開くことがないように、ロック部材によってロックされている。また、タンク本体１１の一端下部にはタンク給排口１５が形成されており、このタンク給排口１５のフランジ１５ａを介して、フートバルブ１６が固定されている。   FIG. 1 shows a 20 foot ISO tank container 10 which is composed of a tank body 11 and a frame 12 for holding the tank body 11. A hatch 13 for performing maintenance, liquid injection, and the like is formed on the upper portion of the tank main body 11, and this hatch 13 is covered with a lid 14 so that the lid 14 does not open during transportation. Locked by. A tank supply / exhaust port 15 is formed at a lower end of the tank main body 11, and a foot valve 16 is fixed via a flange 15 a of the tank supply / discharge port 15.

タンク本体１１内には、タンク本体の下部に輸送内袋２０が、上部に押え内袋１９が装填される。これら内袋１９，２０は、ハッチ１３から作業者によってタンク本体１１内に持ち込まれ、作業者によってタンク本体１１にセットされる。そして、フートバルブ１６を介してタンク給排口１５から貨物としての液体が輸送内袋２０に入れられることにより、タンク本体１１内で輸送内袋２０が膨らみ、この輸送内袋２０がタンク本体１１のライニングとして機能する。また、ハッチ１３から充填ホース１７及び充填物給排口１８を介して充填用エアが押え内袋１９に充填されることにより、この押え内袋１９によって輸送内袋２０がタンク本体１１に押し付けられて、輸送中であっても移動することがないようにされる。これにより、輸送中の液体の流動によって輸送内袋２０がタンク本体１１内で移動することがなく、輸送内袋２０が破裂したりすることがなくなる。   In the tank body 11, a transport inner bag 20 is loaded at the lower part of the tank body, and a presser inner bag 19 is loaded at the upper part. The inner bags 19 and 20 are brought into the tank main body 11 by the operator from the hatch 13 and set in the tank main body 11 by the operator. Then, liquid as cargo is put into the transport inner bag 20 from the tank supply / discharge port 15 via the foot valve 16, so that the transport inner bag 20 inflates in the tank main body 11, and this transport inner bag 20 is in the tank main body 11. Acts as a lining. Further, the filling inner bag 19 is filled with the filling air from the hatch 13 through the filling hose 17 and the filling material supply / discharge port 18, whereby the inner bag 20 is pressed against the tank main body 11 by the holding inner bag 19. Thus, it is prevented from moving even during transportation. As a result, the transport inner bag 20 does not move in the tank body 11 due to the flow of liquid during transport, and the transport inner bag 20 does not rupture.

図２（Ａ）に示すように、輸送内袋２０は、封筒状に形成された内袋本体２１と、前記タンク給排口１５に嵌合する内袋給排口２２とから構成されている。このように封筒状に輸送内袋２０を形成しているため、図３（Ａ）に示すように、筒状フイルム２３をロール状に巻き取ったフイルムロール２４から、筒状フイルム２３を引き出して、所定の長さに切断し、この切断した筒状フイルム２３の両端部２３ａ，２３ｂを熱溶着、超音波溶着などによって接合することにより、簡単に内袋本体２１を形成することができる。   As shown in FIG. 2 (A), the transport inner bag 20 includes an inner bag body 21 formed in an envelope shape and an inner bag supply / discharge port 22 that fits into the tank supply / discharge port 15. . Since the transport inner bag 20 is thus formed in an envelope shape, as shown in FIG. 3A, the tubular film 23 is pulled out from the film roll 24 obtained by winding the tubular film 23 into a roll shape. The inner bag main body 21 can be easily formed by cutting to a predetermined length and joining both ends 23a and 23b of the cut cylindrical film 23 by heat welding, ultrasonic welding, or the like.

図２は、タンク本体１１と輸送内袋２０との寸法の関係を示すもので、（Ａ）はタンク本体１１と輸送内袋２０との平面を、（Ｂ）はタンク本体１１の長手方向縦断面と輸送内袋２０とを、（Ｃ）はタンク本体１１の幅方向縦断面と輸送内袋２０とをそれぞれ示している。ここで、長手方向縦断面とは、（Ａ）の平面図においてタンク本体１１の長手方向に伸びる中心線ＣＬ１を含む縦断面（Ｂ−Ｂ矢視断面）をいい、幅方向縦断面とはタンク本体１１の幅方向に伸びる中心線ＣＬ２を含む縦断面（Ｃ−Ｃ矢視断面）をいう。なお、ＣＬ３はタンク本体１１の高さ方向に伸びる中心線を示している。   2A and 2B show the dimensional relationship between the tank body 11 and the transport inner bag 20. FIG. 2A is a plan view of the tank body 11 and the transport inner bag 20, and FIG. The surface and the inner bag 20 for transport are shown in FIG. 5C, and the longitudinal cross section of the tank body 11 and the inner bag 20 for transport are shown. Here, the longitudinal cross section refers to a longitudinal section (BB cross section) including a center line CL1 extending in the longitudinal direction of the tank body 11 in the plan view of FIG. A vertical cross section (CC cross section) including a center line CL2 extending in the width direction of the main body 11 is referred to. CL3 indicates a center line extending in the height direction of the tank body 11.

タンク本体１１は横置きされて両端が閉じられた円筒体状に構成されており、輸送内袋２０は封筒状に構成されている。したがって、輸送内袋２０のサイズがタンク本体１１に合わせた適正なサイズ範囲よりも小さい場合には、所定の充填容量を確保することができないばかりか、タンク本体１１の内周面と輸送内袋２０の間に隙間が発生し、この隙間内を輸送内袋２０とこの輸送内袋２０内の液体とが移動することになって、内袋給排口２２の溶着部分や、輸送内袋２０の両端部の溶着ラインで破損してしまうことがある。また、逆に輸送内袋２０のサイズがタンク本体に合わせた適正なサイズ範囲を超えて大きい場合には、原材料の無駄につながるだけでなく、輸送内袋２０の端部などの余剰部分が充填された液体の下方に位置してしまうと、この充填液の重みによって輸送内袋２０の端部が、液体が充填された内袋本体２１とタンク本体１１の内周面との間に挟まれてしまい、それ以上の液体の充填が不可能になってしまう。また、このまま液体の充填が続行される場合には、輸送内袋２０の内圧が高まって、破損してしまうことがある。   The tank body 11 is configured in a cylindrical shape that is horizontally placed and closed at both ends, and the transport inner bag 20 is configured in an envelope shape. Therefore, when the size of the transport inner bag 20 is smaller than the appropriate size range matched to the tank body 11, not only can a predetermined filling capacity be secured, but also the inner peripheral surface of the tank body 11 and the transport inner bag. A gap is generated between the inner bag 20 and the inner bag 20 and the liquid in the inner bag 20 move in the gap. May be damaged at the welding lines at both ends of the. Conversely, if the size of the transport inner bag 20 is larger than the appropriate size range for the tank body, not only will the raw materials be wasted, but the excess portion such as the end of the transport inner bag 20 will be filled. When the liquid is positioned below the liquid, the end of the transport inner bag 20 is sandwiched between the inner bag body 21 filled with the liquid and the inner peripheral surface of the tank body 11 by the weight of the filling liquid. As a result, no more liquid can be filled. Further, when the liquid filling is continued as it is, the internal pressure of the transport inner bag 20 is increased and may be damaged.

本実施形態では、タンク本体１１のサイズを基準にして封筒型の輸送内袋２０のサイズをある一定範囲に規定することにより、上記のような液体の充填不良や、輸送内袋２０の破損などを防止している。輸送内袋２０の長さをＩＬ、その幅をＩＷ、タンク本体１１の長手縦断面における内周長（第１内周長）をＴＬｔ、タンク本体１１の幅方向縦断面における内周長（第２内周長）をＴＬｒとしたときに、
０．４７・ＴＬｔ≦ＩＬ≦０．６・ＴＬｔ、
０．４７・ＴＬｒ≦ＩＷ≦０．６・ＴＬｒとしている。
なお、前記ＩＬ，ＩＷは、好ましくは
０．４９・ＴＬｔ≦ＩＬ≦０．５５・ＴＬｔ、
０．４９・ＴＬｒ≦ＩＷ≦０．５８・ＴＬｒである。
このようにタンク本体１１の内周長を基準にして封筒型輸送内袋２０のサイズを規定しているため、タンク本体１１の形状が円筒状に限られず、他の楕円形状やその他の形状であっても容易に適用が可能である。 In the present embodiment, by defining the size of the envelope-type transport inner bag 20 within a certain range on the basis of the size of the tank body 11, the above-described liquid filling failure, breakage of the transport inner bag 20, etc. Is preventing. The length of the transport inner bag 20 is IL, the width is IW, the inner peripheral length (first inner peripheral length) in the longitudinal longitudinal section of the tank body 11 is TLt, and the inner circumference length (first in the widthwise longitudinal section of the tank body 11). (2 inner circumference) is TLr,
0.47 · TLt ≦ IL ≦ 0.6 · TLt,
0.47 · TLr ≦ IW ≦ 0.6 · TLr.
The IL and IW are preferably 0.49 · TLt ≦ IL ≦ 0.55 · TLt,
0.49 · TLr ≦ IW ≦ 0.58 · TLr.
Thus, since the size of the envelope-type transport inner bag 20 is defined based on the inner peripheral length of the tank main body 11, the shape of the tank main body 11 is not limited to the cylindrical shape, but may be other elliptical shapes or other shapes. Even if it exists, it is easily applicable.

内袋給排口２２は、輸送内袋２０の一端部からＬ１＝１７５０ｍｍ離れた位置で長手方向に伸びる中心線上またはその近傍に設けられる。このように、輸送内袋２０の幅ＩＷを基準にしてＬ１を０．４４・ＩＷ≦Ｌ１≦０．５０・ＩＷの範囲内に規定することにより、タンク本体１１の一端下部に形成されたタンク給排口１５を基準にして輸送内袋２０を取り付けても、タンク本体１１と輸送内袋２０との長手方向での中心位置を一致させることができる。これにより、輸送内袋２０の両端部の余剰部分をほぼ均等にタンク本体１１内で振り分けることができる。したがって、輸送内袋２０の端部の余剰部分がタンク本体１１の片側で余って、タンク本体１１と輸送内袋２０との間に挟まれてしまうことがなくなり、これに起因する液体の充填不良や内袋破損などがなくなる。   The inner bag supply / discharge port 22 is provided on or near the center line extending in the longitudinal direction at a position away from one end of the transport inner bag 20 by L1 = 1750 mm. In this way, by defining L1 within the range of 0.44 · IW ≦ L1 ≦ 0.50 · IW with reference to the width IW of the transport inner bag 20, the tank formed at the lower end of one end of the tank body 11 Even if the transport inner bag 20 is attached with the supply / discharge port 15 as a reference, the center positions of the tank body 11 and the transport inner bag 20 in the longitudinal direction can be matched. Thereby, the surplus part of the both ends of the transport inner bag 20 can be distributed in the tank body 11 almost evenly. Therefore, the excess portion of the end portion of the transport inner bag 20 is not left on one side of the tank main body 11 and is not sandwiched between the tank main body 11 and the transport inner bag 20, and liquid filling failure due to this is prevented. And inner bag breakage.

図４に示すように、押え内袋１９も、図２に示す輸送内袋２０と同じサイズの封筒型に構成されるが、輸送物としての液体が充填されることがないため、一重とされている点と、内袋給排口２２を設けない代わりに充填物給排口１８を有する点で輸送内袋２０と異なり、封筒型の内袋本体１９ａと充填物給排口１８とから構成される。   As shown in FIG. 4, the presser inner bag 19 is also configured as an envelope type having the same size as the transport inner bag 20 shown in FIG. 2, but is not single-filled because it is not filled with a liquid as a transported item. Unlike the transport inner bag 20 in that it has a filler supply / discharge port 18 instead of providing the inner bag supply / discharge port 22, it is composed of an envelope-type inner bag body 19 a and a filler supply / discharge port 18. Is done.

図５に示すように、充填物給排口１８は合成樹脂製の円筒体１８ａから構成されており、一端に溶着フランジ部１８ｂが形成され、他端の内周面に取付雌ねじ１８ｃが形成されている。この取付雌ねじ１８ｃを介して、充填物給排口１８には、バルブ５０を有するホース接続具５１の下端取付ねじ部５１ａがねじ込まれる。また、ホース接続具５１の上部には、ホース接続口５１ｂ及びキャップ取付ねじ５１ｃが形成されている。   As shown in FIG. 5, the filler supply / discharge port 18 is composed of a cylindrical body 18a made of synthetic resin, a welding flange portion 18b is formed at one end, and a mounting female screw 18c is formed at the inner peripheral surface of the other end. ing. A lower end mounting screw portion 51a of a hose connector 51 having a valve 50 is screwed into the filler supply / discharge port 18 through the mounting female screw 18c. Further, a hose connection port 51b and a cap mounting screw 51c are formed on the upper portion of the hose connector 51.

ホース接続口５１ｂはワンタッチ式でホース先端が着脱可能に構成されている。また、バルブ５０は、エアを充填した後に、ホース接続具５１から充填ホース１７を外す場合にハンドル５０ａが回動されて閉じられる。そして、充填ホース１７を外した後は、このキャップ取付ねじ部５１ｃにキャップ５２が嵌められる。ホース接続口５１ｂはワンタッチ方式が採用されているが、これに代えてねじ込み式のものを用いてもよい。なお、充填物給排口１８、バルブ５０、ホース接続具５１の形状、構造、取付方法などは上記のものに限られることなく、種々の形態のものが使用可能である。なお、押え内袋１９を一重で構成しているが、二重以上の多重としてもよい。   The hose connection port 51b is a one-touch type and is configured such that the tip of the hose is detachable. Further, the valve 50 is closed by turning the handle 50a when the filling hose 17 is removed from the hose connector 51 after filling with air. Then, after the filling hose 17 is removed, the cap 52 is fitted to the cap mounting screw portion 51c. Although the one-touch system is adopted for the hose connection port 51b, a screw-in type may be used instead. In addition, the shapes, structures, attachment methods, and the like of the filler supply / discharge port 18, the valve 50, and the hose connector 51 are not limited to those described above, and various forms can be used. In addition, although the presser inner bag 19 is configured by a single layer, it may be double or multiple.

次に、輸送内袋２０の製造方法について説明する。図６に示すフローチャートのように、筒状フイルムの切断、筒状フイルムの二重化、内袋給排口取付穴の形成、内袋給排口の取り付け、筒状フイルムの一端部の溶着、エア抜き、筒状フイルムの他端部の溶着、位置決めマークの記録、内袋本体の折り畳み、梱包の各工程が順次に行われて、筒状フイルムから内袋が構成される。   Next, a method for manufacturing the transport inner bag 20 will be described. As shown in the flowchart of FIG. 6, cutting of the cylindrical film, duplication of the cylindrical film, formation of the inner bag supply / discharge port mounting hole, installation of the inner bag supply / discharge port, welding of one end of the cylindrical film, air bleeding Each process of welding the other end of the cylindrical film, recording a positioning mark, folding the inner bag body, and packing is sequentially performed to form the inner bag from the cylindrical film.

図３（Ａ）に示すように、筒状フイルムの切断工程では、フイルムロール２４から筒状フイルム２３を引き出して、作業台２５上に載せて長さＩＬで例えばカッタ２６により切断する。筒状フイルム２３は、ＬＬＤＰＥ（直鎖状低密度ポリエチレン）から構成されており、ロール形態に巻き取り収納されている。本実施形態では、内袋本体２１を二重化しているので、（Ｂ）に示すように、筒状フイルム２３を長さＩＬで２回切断し、二つの筒状フイルム２３を形成する。本実施形態では２０フィートタンクコンテナ用内袋であるので、上記の適正範囲に基づき輸送用タンクの第１内周長ＴＬｔ≒１５５００ｍｍ、第２内周長ＴＬｒ≒７１００ｍｍから、ＩＬ＝８３００ｍｍ、ＩＷ＝３９００ｍｍとしている。なお、筒状フイルム２３のフイルム単層の厚みは１２０μｍであり、本実施形態では筒状フイルム２３として２層となっているので、筒状フイルム２３の全体厚みは２４０μｍである。フイルム厚みは８０〜５００μｍの範囲が好ましく、特に好ましくは１００〜３００μｍの範囲である。   As shown in FIG. 3A, in the step of cutting the cylindrical film, the cylindrical film 23 is pulled out from the film roll 24, placed on the work table 25, and cut by a cutter 26 with a length IL, for example. The cylindrical film 23 is made of LLDPE (linear low density polyethylene) and is wound and stored in a roll form. In this embodiment, since the inner bag main body 21 is doubled, as shown in (B), the cylindrical film 23 is cut | disconnected twice by length IL, and the two cylindrical films 23 are formed. In this embodiment, since the inner bag is for a 20-foot tank container, IL = 8300 mm, IW = from the first inner circumference TLt≈15500 mm and the second inner circumference TLr≈7100 mm of the transport tank based on the above appropriate range. It is 3900 mm. In addition, since the thickness of the film single layer of the cylindrical film 23 is 120 micrometers, and since it is two layers as the cylindrical film 23 in this embodiment, the whole thickness of the cylindrical film 23 is 240 micrometers. The film thickness is preferably in the range of 80 to 500 μm, particularly preferably in the range of 100 to 300 μm.

図３（Ｃ）に示すように、筒状フイルム２３の二重化工程では、一方の筒状フイルム２３内に他方の筒状フイルム２３を入れて二重化する。次に、（Ｄ）に示すように、内袋給排口取付穴の穴あけ工程では、一方の端部２３ｂからＬ１＝１７５０ｍｍ離れた位置で幅方向中央に給排口に対応する穴２７を開ける。この穴開け加工は、パンチやカッタなどを用いて行われ、上側の２層フイルムのみに対して行われる。   As shown in FIG. 3C, in the duplexing process of the cylindrical film 23, the other cylindrical film 23 is placed in one cylindrical film 23 to be duplexed. Next, as shown in (D), in the step of drilling the inner bag supply / exhaust port mounting hole, a hole 27 corresponding to the supply / exhaust port is formed at the center in the width direction at a position L1 = 1750 mm away from one end 23b. . This punching process is performed using a punch or a cutter, and is performed only on the upper two-layer film.

図７（Ｅ）に示すように内袋給排口２２の取り付け工程では、開けられた穴２７の周縁に対して内袋給排口２２が熱溶着される。この熱溶着も上側の２層フイルムのみに対して行われる。内袋給排口２２は、截頭円錐筒状の給排口本体２２ａと、これの両端部に取り付けられるフランジ２２ｂ，２２ｃとから構成されており、例えばＬＬＤＰＥで一体成形されている。下側のフランジは溶着用とされており、この溶着フランジ２２ｂと内袋本体２１とは図示しない熱溶着器によって熱溶着され、溶着ライン２８，２９が形成される。また、上側の取付フランジ２２ｃはタンク給排口１５（図８参照）にタンク内側から内袋給排口２２を挿入したときに、タンク給排口１５のフランジ１５ａの外側に出て、このフランジ１５ａに取付フランジ２２ｃが密着する。   As shown in FIG. 7E, in the inner bag supply / exhaust port 22 attachment step, the inner bag supply / exhaust port 22 is thermally welded to the periphery of the opened hole 27. This thermal welding is also performed only on the upper two-layer film. The inner bag supply / exhaust port 22 includes a truncated conical cylindrical supply / discharge port main body 22a and flanges 22b, 22c attached to both ends of the main bag supply / discharge port main body 22a, and is integrally formed with, for example, LLDPE. The lower flange is welded, and the welding flange 22b and the inner bag main body 21 are heat welded by a heat welder (not shown) to form welding lines 28 and 29. The upper mounting flange 22c protrudes outside the flange 15a of the tank supply / discharge port 15 when the inner bag supply / discharge port 22 is inserted into the tank supply / discharge port 15 (see FIG. 8) from the inside of the tank. The mounting flange 22c is in close contact with 15a.

図８に示すように、タンク給排口１５のフランジ１５ａには、内袋吸入防止部材３０のフランジ３０ａや、フートバルブ１６が取り付けられ、これにより、内袋給排口２２はタンク給排口１５に確実に取り付けられる。また、給排口本体２２ａは、タンク給排口１５の内周面に沿うように形成されている。   As shown in FIG. 8, the flange 30 a of the inner bag suction preventing member 30 and the foot valve 16 are attached to the flange 15 a of the tank supply / discharge port 15, whereby the inner bag supply / discharge port 22 is connected to the tank supply / discharge port 15. It can be securely attached. The supply / discharge port body 22 a is formed along the inner peripheral surface of the tank supply / discharge port 15.

図９（Ｆ）に示すように筒状フイルムの一端部の溶着工程では、筒状フイルム２３の一端部２３ａのフイルム４層が、熱溶着器３３によって同時に熱溶着され一端部２３ａが閉じられる。熱溶着器３３は、受け台３３ａと溶着ヘッド３３ｂとから構成されており、溶着ヘッド３３ｂが下降して受け台３３ａとにより筒状フイルム端部２３ａを挟持した状態で熱が付与される。   As shown in FIG. 9 (F), in the step of welding one end of the cylindrical film, the four layers of the film 23 at one end 23a of the cylindrical film 23 are simultaneously heat welded by the heat welder 33, and the one end 23a is closed. The heat welder 33 includes a cradle 33a and a weld head 33b, and heat is applied in a state where the weld head 33b is lowered and the tubular film end portion 23a is sandwiched between the cradle 33a.

図１０（Ａ）に示すように、熱溶着ライン３５ａ，３５ｂは、本実施形態では幅５ｍｍの直線状であり、これらの熱溶着ライン３５ａ，３５ｂは隙間５〜１０ｍｍを設けて２条形成しているが、熱溶着ラインは１条や３条以上であってもよく、また、直線状に代えて波形などの溶着ラインとしてもよい。複条の熱溶着ラインの形成に際して、各溶着ラインは一括して形成してもよく、または片側ずつ順に形成してもよい。（Ａ）は内側及び外側の筒状フイルム２３の端部を４層状態で溶着したものであり、この場合には、熱溶着ライン３５ａ，３５ｂを一括して形成しても片側ずつ順に形成してもよい。（Ｂ）は内側の筒状フイルム２３の一端部のみを先ず溶着して熱溶着ライン３６ａを形成し、次に内側と外側の筒状フイルム２３の一端部を、先の溶着ライン３６ａの外側で４層状態で一括して溶着して熱溶着ライン３６ｂを形成している。また、（Ｃ）は、内側の筒状フイルム２３を外側のものに比べて少し短くしておき、それぞれの筒状フイルム２３の端部を二層状態で個別に熱溶着し、熱溶着ライン３７ａ，３７ｂを形成している。なお、熱溶着ラインは、全幅分を一括して溶着してもよく、また溶着ヘッド３３ｂの長さが制限される場合には、溶着ヘッド３３ｂの長さ分ずつ逐次溶着してもよい。熱溶着器３３はヒートシール方式を採用しているが、超音波溶着法やその他の溶着方法で行ってもよい。   As shown in FIG. 10A, the thermal welding lines 35a and 35b are linear in a width of 5 mm in the present embodiment, and these thermal welding lines 35a and 35b are formed in two strips with a gap of 5 to 10 mm. However, the number of the heat welding lines may be one or three or more, and may be a welding line such as a waveform instead of a straight line. When forming a multiple-line heat welding line, each welding line may be formed in a lump or may be formed in order on one side. (A) is a case where the end portions of the inner and outer cylindrical films 23 are welded in a four-layer state. In this case, even if the heat welding lines 35a and 35b are formed together, they are formed one by one in order. May be. (B) First, only one end portion of the inner cylindrical film 23 is welded to form the heat welding line 36a, and then one end portion of the inner and outer cylindrical film 23 is placed outside the previous welding line 36a. The heat welding line 36b is formed by welding together in a four-layer state. In (C), the inner cylindrical film 23 is slightly shorter than the outer one, and the end portions of the respective cylindrical films 23 are individually heat-sealed in a two-layer state, and the heat-welding line 37a. , 37b. In addition, the thermal welding line may be welded for the entire width at a time, and when the length of the welding head 33b is limited, the thermal welding line may be sequentially welded by the length of the welding head 33b. The heat welder 33 employs a heat seal method, but may be performed by an ultrasonic welding method or other welding methods.

図９（Ｇ）に示すようにエア抜き工程では、筒状フイルム２３の熱溶着した一端部２３ａから他端部２３ｂに向けて押圧ローラ３８を作業台２５の上で転がすことにより、二重化された筒状フイルム２３内のエア３９が抜かれる。なお、エア抜きは、押圧ローラ３８の転接に代えて、内袋本体２１を一端側から他端側に折り畳んでゆくことによりエア抜きしてもよい。なお、他端部２３ｂ近くには内袋給排口２２が突出して取り付けられているので、この部分を回避するように小さなローラが用いられて、内袋給排口２２と他端部２３ｂとの間のエアが抜かれる。   As shown in FIG. 9 (G), in the air venting process, the pressure roller 38 is rolled on the work table 25 from the one end 23a to the other end 23b where the cylindrical film 23 is heat-welded, thereby being duplicated. The air 39 in the cylindrical film 23 is extracted. The air bleeding may be performed by folding the inner bag main body 21 from one end side to the other end side instead of the rolling contact of the pressing roller 38. In addition, since the inner bag supply / discharge port 22 protrudes and is mounted near the other end 23b, a small roller is used to avoid this portion, and the inner bag supply / discharge port 22 and the other end 23b The air between is removed.

（Ｈ）に示すように筒状フイルム２３の他端部の溶着工程では、エア抜きされた筒状フイルム２３の他端部２３ｂが一端部２３ａと同様に熱溶着器３３で熱溶着され、図１１（Ａ）に示すように、輸送内袋２０が完成する。そして、輸送内袋２０には、長手方向に伸びる中心線に沿ってライン状の位置決めマーク４５が油性インクなどで記録される。輸送内袋２０の完成後は、内袋本体２１が折り畳まれて、梱包袋４０に収納される。位置決めマーク４５は本実施形態ではライン状であるが、これは位置決めすることができるものであればよく、形状やそのサイズなどは特に限定されない。   As shown in (H), in the welding process of the other end portion of the tubular film 23, the other end portion 23b of the bleed tubular film 23 is thermally welded by the heat welder 33 in the same manner as the one end portion 23a. As shown in 11 (A), the transport inner bag 20 is completed. Then, a linear positioning mark 45 is recorded on the transport inner bag 20 with oil-based ink or the like along a center line extending in the longitudinal direction. After the transport inner bag 20 is completed, the inner bag body 21 is folded and stored in the packing bag 40. In the present embodiment, the positioning mark 45 has a line shape. However, the positioning mark 45 only needs to be able to be positioned, and the shape and size thereof are not particularly limited.

図１１（Ａ）に示すように、内袋本体２１の折り畳みは、内袋給排口２２を下に向けた状態で両側縁部２１ａ，２１ｂが長手方向に伸びる中心線（位置決めマーク４５）に平行に、且つこの中心線に両側縁部２１ａ，２１ｂが近接するように、谷折り線２１ｅに沿って谷折りされる。同様にして（Ｂ）に示すように、この谷折りした部分を再度長手方向に伸びる中心線に平行に且つこの中心線に谷折り線２１ｅが近接するように谷折り線２１ｆに沿って谷折りされ、二重に折り畳まれる。そして、（Ｃ）に示すように、谷折り線２１ｅ，２１ｆで谷折りされた状態で内袋本体２１の両端部２１ｃ，２１ｄから前記内袋給排口２２に向かって谷折り線２１ｇに沿ってさらに複数回、谷折りされることにより、（Ｄ）に示すように、内袋本体２１が小さく折り畳まれる。なお、谷折り線２１ｇに沿って谷折りする代わりに、一端部から巻き取ってロール状に形成してもよい。そして、（Ｅ）に示すように、梱包袋４０に収納される。谷折り線２１ｅ，２１ｆに沿って二重に折り畳むことで、内袋本体２１をコンパクトに収納することができる。なお、長手方向に伸びる中心線に平行に谷折りする回数は２回に限られず、１回または３回以上であってもよい。   As shown in FIG. 11 (A), the inner bag body 21 is folded along the center line (positioning mark 45) where both side edges 21a, 21b extend in the longitudinal direction with the inner bag supply / discharge port 22 facing downward. The valley folds are made along the valley fold line 21e in parallel and so that the side edges 21a and 21b are close to the center line. Similarly, as shown in (B), the valley fold is folded along the valley fold line 21f so that the valley fold line 21e is close to the center line parallel to the center line extending in the longitudinal direction again. And folded in double. And as shown in (C), along the valley fold line 21g from the both end portions 21c, 21d of the inner bag body 21 toward the inner bag supply / exhaust port 22 in a state where the valley folds are made at the valley fold lines 21e, 21f. Further, the inner bag main body 21 is folded small as shown in FIG. Instead of the valley fold along the valley fold line 21g, it may be wound up from one end and formed into a roll shape. And it is accommodated in the packaging bag 40 as shown to (E). The inner bag main body 21 can be stored compactly by folding it double along the valley fold lines 21e, 21f. In addition, the frequency | count of valley-folding parallel to the centerline extended in a longitudinal direction is not restricted to 2 times, You may be 1 time or 3 times or more.

このように内袋給排口２２が外側になるように内袋本体２１を折り畳むことにより、タンク給排口１５に内袋給排口２２を簡単にセットすることができる。しかも、谷折り線２１ｇにより内袋本体２１を谷折りすることにより、内袋給排口２２をタンク給排口１５にセットした状態で簡単に内袋本体２１をタンク本体１１の長手方向に容易に拡開することができる。また、内袋給排口２２を下に向けた状態で各谷折り線２１ｅ，２１ｆで谷折りにすることにより、内袋給排口２２から液体を充填することで、充填された液体によって折り畳まれた内袋本体２１が自然に拡開するようになる。   In this way, the inner bag main body 21 is folded so that the inner bag supply / discharge port 22 is located outside, whereby the inner bag supply / discharge port 22 can be easily set in the tank supply / discharge port 15. Moreover, the inner bag body 21 is easily folded in the longitudinal direction of the tank body 11 with the inner bag supply / discharge port 22 set to the tank supply / discharge port 15 by folding the inner bag body 21 with the valley fold line 21g. Can be expanded. Further, by folding the valleys along the valley fold lines 21e and 21f with the inner bag supply / discharge port 22 facing downward, the liquid is filled from the inner bag supply / discharge port 22 and folded by the filled liquid. The inner bag body 21 thus expanded naturally expands.

押え内袋１９も輸送内袋２０と同様の工程を経て製造されるが、筒状フイルム２３の二重化や位置決めマーク４５の記録などが不要であり、これらの工程は省略される。また、内袋給排口２２の取り付けに代えて、充填物給排口１８が取り付けられる。この充填物給排口１８はタンク本体１１のハッチ１３の位置に対応して取り付けられており、ハッチ１３の位置で充填ホース１７の着脱やバルブ５０の開閉操作が可能になる。   The presser inner bag 19 is also manufactured through the same process as the transport inner bag 20, but duplication of the cylindrical film 23 and recording of the positioning mark 45 are unnecessary, and these processes are omitted. Moreover, it replaces with attachment of the inner bag supply / discharge port 22, and the filling material supply / discharge port 18 is attached. The filler supply / discharge port 18 is attached corresponding to the position of the hatch 13 of the tank body 11, and the filling hose 17 can be attached and detached and the valve 50 can be opened and closed at the position of the hatch 13.

次に、輸送内袋２０及び押え内袋１９のタンク本体１１へのセット方法を説明する。作業者によってハッチ１３から、梱包袋４０に収納された状態で各内袋１９，２０がタンク本体１１内に持ち込まれて、まず梱包袋４０から輸送内袋２０が取り出される。輸送内袋２０には、タンク本体１１の長手方向に伸びる中心線ＣＬ１に対応するようにライン状の位置決めマーク４５が記録されており、この位置決めマーク４５をタンク本体１１の長手方向に伸びる中心線ＣＬ１に合わせるようにして、タンク給排口１５に内袋給排口２２を挿入する。この挿入前には、タンク給排口１５のフランジ１５ａからフートバルブ１６が外されている。この挿入により、取付フランジ２２ｃがタンク給排口１５のフランジ１５ａに密着される。次に、谷折り線２１ｇで折り畳まれた内袋本体２１をタンク長手方向で展開する。次に、谷折り線２１ｆで谷折りされた部分を展開する。なお、谷折り線２１ｅで谷折りされた両側縁部は折り畳まれた状態にしておく。この折り畳まれた状態の内袋本体２１によりタンク本体１１内のほぼ全幅が覆われており、谷折り線２１ｅでの谷折りを展開しても自重で再度折れてしまうからである。   Next, a method for setting the transport inner bag 20 and the presser inner bag 19 to the tank body 11 will be described. The inner bags 19 and 20 are brought into the tank body 11 from the hatch 13 while being stored in the packing bag 40 by the operator, and the transport inner bag 20 is first taken out of the packing bag 40. A linear positioning mark 45 is recorded in the transport inner bag 20 so as to correspond to the center line CL1 extending in the longitudinal direction of the tank body 11, and the positioning mark 45 is extended to the center line extending in the longitudinal direction of the tank body 11. The inner bag supply / discharge port 22 is inserted into the tank supply / discharge port 15 so as to match with CL1. Before this insertion, the foot valve 16 is removed from the flange 15a of the tank supply / discharge port 15. By this insertion, the mounting flange 22 c is brought into close contact with the flange 15 a of the tank supply / discharge port 15. Next, the inner bag body 21 folded at the valley fold line 21g is developed in the tank longitudinal direction. Next, the portion folded at the valley fold line 21f is expanded. In addition, the both-sides edge part folded by the valley fold line 21e is made into the folded state. This is because the inner bag body 21 in the folded state covers almost the entire width of the tank body 11, and even if the valley fold at the valley fold line 21e is developed, it is folded again by its own weight.

次に、展開された輸送内袋２０の上に、押え内袋１９を拡げて同じように拡開する。その後、図５に示すように、拡げた押え内袋１９の充填物給排口１８に充填ホース１７を接続する。図１に示すように、充填ホース１７はハッチ１３を介しタンク外部からタンク内へと入れられる。この後、作業者がハッチ１３からタンク本体１１外へ出て、タンク本体１１内への内袋１９，２０の装填作業を終了する。次に、図８に示すように、タンク給排口１５に、タンク本体１１の外側から内袋吸引防止部材３０、フートバルブ１６などが取り付けられる。   Next, the presser inner bag 19 is expanded on the expanded transport inner bag 20 and expanded in the same manner. Thereafter, as shown in FIG. 5, the filling hose 17 is connected to the filling material supply / discharge port 18 of the presser inner bag 19 that has been expanded. As shown in FIG. 1, the filling hose 17 is inserted into the tank from the outside of the tank through the hatch 13. Thereafter, the operator goes out of the tank body 11 from the hatch 13 and finishes the work of loading the inner bags 19 and 20 into the tank body 11. Next, as shown in FIG. 8, the inner bag suction prevention member 30, the foot valve 16, and the like are attached to the tank supply / exhaust port 15 from the outside of the tank body 11.

貨物としての液体は、タンク給排口１５から充填される。この充填速度は例えば５０リットル／ｍｉｎで行われる。内袋本体２１はタンク本体１１内で長手方向に拡げられているので、液体が円滑に内袋本体２１内に充填され、この充填によって内袋本体２１が膨らむ。そして、側縁部が谷折りされた状態でも液体の充填に伴い次第に折り畳み部分が拡がって、タンク本体１１内で内袋本体２１の端部が液体が充填された部分の内袋本体２１の重みで内袋本体２１とタンク本体１１との間に挟み込まれることもなく、内袋本体２１が円滑に液体の充填で膨らみ、満載状態では約２０トンの液体が入れられる。本実施形態では、未満載状態での輸送を前提としているため、液体が未満載量である例えば１０トン入れられる。   The liquid as cargo is filled from the tank supply / discharge port 15. This filling speed is performed at, for example, 50 liters / min. Since the inner bag main body 21 is expanded in the longitudinal direction in the tank main body 11, the liquid is smoothly filled into the inner bag main body 21, and the inner bag main body 21 expands by this filling. And even when the side edge is folded, the folded portion gradually expands with the filling of the liquid, and the weight of the inner bag main body 21 in the portion of the tank main body 11 where the end of the inner bag main body 21 is filled with the liquid. Thus, the inner bag main body 21 is smoothly filled with liquid without being sandwiched between the inner bag main body 21 and the tank main body 11, and about 20 tons of liquid is put in a full state. In the present embodiment, since it is premised on transportation in a less loaded state, for example, 10 tons of liquid having a less loaded amount is put.

また、液体の充填開始とともに、または液体の充填開始前に押え内袋１９へもエアが例えば充填容量の１０〜２０％入れられ、液体の充填によって押え内袋１９が輸送内袋２０とタンク本体１１の内面との間に挟まれてしまうことがないように、プレ充填が行われ、形が整えられる。プレ充填量に達した段階でエアの充填は一時停止される。そして、所定の輸送量である例えば１０トンの液体の流入が終了した後に、一時停止したエアの充填が再開される。そして、エアの充填によって押え内袋１９が、タンク本体１１の内面と輸送内袋２０との隙間を満たした後に、エアの充填が止められる。そして、バルブ５０を閉じた後に充填ホース１７が外され、この外された充填物給排口１８に対してキャップ５２が被せられる。この後、ハッチ１３を閉じて、液体のタンク本体１１内への充填作業が終了する。   Also, air is put into the presser inner bag 19 at the start of the liquid filling or before the liquid filling starts, for example, 10 to 20% of the filling capacity. Pre-filling is performed and the shape is adjusted so as not to be pinched between the inner surface of 11. Air filling is temporarily stopped when the pre-fill amount is reached. Then, after the inflow of, for example, 10 tons of liquid, which is a predetermined transport amount, is completed, the temporarily stopped filling of air is resumed. Then, after the presser inner bag 19 fills the gap between the inner surface of the tank body 11 and the transport inner bag 20 by the air filling, the air filling is stopped. Then, after the valve 50 is closed, the filling hose 17 is removed, and the removed material supply / discharge port 18 is covered with a cap 52. Thereafter, the hatch 13 is closed, and the liquid filling operation into the tank body 11 is completed.

なお、押え内袋１９にエアをプレ充填した後にエアの充填を一時停止して、所定の輸送量の液体を輸送内袋２０に充填し、この後にエアを押え内袋１９に再充填する代わりに、タンク本体１１の容量から所定輸送量を引いた容量と同じか、これを少し超えた容量のエアを押え内袋１９にプレ充填しておき、この状態で輸送内袋２０に液体を充填してもよい。この場合には、バルブ５０を少し開いた状態にして液体の充填を行い、輸送内袋２０の液体充填に伴い、押え内袋１９内の余剰エアを排出する。また、液体充填に伴い余剰エアを抜く代わりに、タンク容量から輸送量を引いた分の容量のエアを押え内袋１９内に充填しておくだけでもよい。このようにすることで、液体充填場所でのエア充填作業を軽減したり、または不要とすることができる。なお、エア抜きはバルブ５０を少し開いておく代わりに、逆止弁などのエア抜き弁をバルブ５０の代わりに設けたり、バルブ５０に追加したりしてもよい。   Instead of pre-filling the presser inner bag 19 with air and temporarily stopping the air filling, filling the transport inner bag 20 with a predetermined transport amount of liquid, and then refilling the presser inner bag 19 with air. In addition, the presser inner bag 19 is prefilled with air having a capacity equal to or slightly larger than the capacity obtained by subtracting the predetermined transport amount from the capacity of the tank body 11, and the transport inner bag 20 is filled with liquid in this state. May be. In this case, the valve 50 is opened a little to fill the liquid, and the excess air in the presser inner bag 19 is discharged as the transport inner bag 20 is filled with the liquid. Further, instead of removing excess air with liquid filling, the presser inner bag 19 may be filled with air having a capacity obtained by subtracting the transport amount from the tank capacity. By doing in this way, the air filling work in a liquid filling place can be reduced or made unnecessary. In the air venting, an air vent valve such as a check valve may be provided in place of the valve 50 or added to the valve 50 instead of opening the valve 50 a little.

本実施形態では、タンク本体１１内で縦方向に拡げられて内袋本体２１がセットされるが、内袋本体２１はその側縁部が幅方向に伸びる中心線に向けて谷折りされており、内袋本体２１内にエアが入り込まないようになっているので、嫌気性液体にも対応が可能である。また、内袋本体２１及び内袋給排口２２を耐薬品性が高いＬＬＤＰＥから構成しているため、タンク本体１１の材質が制限されることがなく、また、タンク内周面を、例えばポリテトラフルオロエチレンなどのフッ素樹脂でライニングする必要もなくなる。   In the present embodiment, the inner bag main body 21 is set by being expanded in the vertical direction in the tank main body 11, but the inner bag main body 21 is valley-folded toward the center line whose side edge extends in the width direction. Since air does not enter the inner bag main body 21, it is possible to cope with anaerobic liquids. Moreover, since the inner bag main body 21 and the inner bag supply / discharge port 22 are made of LLDPE having high chemical resistance, the material of the tank main body 11 is not limited, and the inner peripheral surface of the tank is made of, for example, poly There is no need to line with a fluororesin such as tetrafluoroethylene.

タンク給排口１５から内袋給排口２２内に配置される内袋吸引防止部材３０は、液体を排出する際に、残存液体が少なくなって内袋本体２１が内袋給排口２２近くに位置したときに、この近くに位置する内袋本体２１を吸引して給排口２２を閉塞してしまうことがないように、内袋本体２１との間に通路を確保するものである。この内袋吸引防止部材３０は、タンク本体１１内に突出して配置される半球状先端部３０ｂと、これに連続し、周面に複数の連通孔３０ｃを有する筒部３０ｄと、筒部３０ｄの基部に設けられる取付フランジ３０ａとから一体的に構成されている。この半球状先端部３０ｂの内袋本体２１内への突出により内袋本体２１が給排口２２に密着してしまうことがなくなり、連通孔３０ｃを介して内袋本体２１内の残存液体が確実に排出される。   The inner bag suction preventing member 30 disposed in the inner bag supply / discharge port 22 from the tank supply / discharge port 15 reduces the residual liquid when discharging the liquid, so that the inner bag body 21 is close to the inner bag supply / discharge port 22. A passage is secured between the inner bag body 21 and the inner bag body 21 so as not to suck the inner bag body 21 located nearby and close the supply / discharge port 22. The inner bag suction preventing member 30 includes a hemispherical tip portion 30b that protrudes into the tank body 11, a cylindrical portion 30d that has a plurality of communication holes 30c on the circumferential surface, and a cylindrical portion 30d. A mounting flange 30a provided at the base is integrally formed. The protrusion of the hemispherical tip 30b into the inner bag main body 21 prevents the inner bag main body 21 from coming into close contact with the supply / exhaust port 22, and the remaining liquid in the inner bag main body 21 is surely secured through the communication hole 30c. To be discharged.

内袋１９，２０は、ＬＬＤＰＥから構成したが、この他に、ＬＤＰＥ（低密度ポリエチレン）、ＯＰ（ニ軸延伸ポリプロピレン）や、その他の合成樹脂から構成してよい。また、内袋本体２１を二重化したが、これに代えて、一重や三重化、多重化してもよい。また、タンク本体１１を円筒状に構成したが、これに代えて、楕円筒状やその他の形状に構成したものに対しても本発明を実施することができる。また、内袋１９．２０をタンクコンテナに用いたが、この他にタンクローリーなどのタンク用内袋として用いることもできる。また、上記実施形態では封筒型の内袋について説明したが、内袋の形状は封筒型に限定されるものではなく、円筒状やその他の各種形状であってもよい。   The inner bags 19 and 20 are made of LLDPE, but may also be made of LDPE (low density polyethylene), OP (biaxially stretched polypropylene), and other synthetic resins. Moreover, although the inner bag main body 21 was duplexed, it may replace with this and may be single, triple, and multiplexed. Moreover, although the tank main body 11 was comprised in the cylindrical shape, it can replace with this and this invention can be implemented also about what was comprised in the elliptical cylinder shape and other shapes. Moreover, although the inner bag 19.20 was used for the tank container, it can also be used as an inner bag for a tank such as a tank lorry. Moreover, although the envelope type inner bag was demonstrated in the said embodiment, the shape of an inner bag is not limited to an envelope type, A cylindrical shape and other various shapes may be sufficient.

押え内袋１９は上記実施形態では、輸送内袋２０と同じサイズで構成して、例えば１〜１９トン程度の未満載状態に対応可能としているが、輸送量に応じて予め例えば１〜５トン用、５〜１０トン用、１０〜１５トン用、１５〜１９トン用の４種類のサイズを設けてもよく、この場合には押え内袋１９を必要以上に大きなサイズで形成する必要がなくなり、材料の無駄が抑えられる。また、押え内袋１９を一つ用いたが、これに代えて複数個用いてもよく、この場合には、各押え内袋１９毎に充填ホース１７を接続し、充填を行う。   In the above embodiment, the presser inner bag 19 has the same size as that of the transport inner bag 20 and can cope with a lower loading state of, for example, about 1 to 19 tons. 4 sizes for 5 to 10 tons, 10 to 15 tons, and 15 to 19 tons may be provided. In this case, it is not necessary to form the presser inner bag 19 in a size larger than necessary. , Waste of materials is suppressed. Further, although one presser inner bag 19 is used, a plurality of presser inner bags 19 may be used instead. In this case, a filling hose 17 is connected to each presser inner bag 19 for filling.

また、輸送内袋２０と押え内袋１９とを別個に装填したが、これら内袋１９，２０の折り畳み時に、輸送内袋２０の上に押え内袋１９を重ねた状態でこれらを一緒に折り畳むことで、折り畳み及び装填を一括して行うことができ、その分だけ作業時間が短縮される。また、一緒に折り畳む際に両面粘着テープなどでこれら内袋同士の一部を仮付けしてもよい。   Further, the transport inner bag 20 and the presser inner bag 19 are loaded separately, but when the inner bags 19 and 20 are folded, they are folded together while the presser inner bag 19 is stacked on the transport inner bag 20. As a result, folding and loading can be performed in a lump, and the working time is reduced accordingly. Moreover, when folding together, you may temporarily attach some of these inner bags with a double-sided adhesive tape.

充填物として上記実施形態ではエアを利用したが、これはトラックなどのエンジンの排ガスを利用してもよく、または、窒素ガスなどの不活性ガスを用いてもよい。また、供給形態も充填ホースを用いる代わりに、カートリッジを直接接続して充填してもよい。また、充填物は気体に限られることなく、水などの液体であってもよく、また発泡合成樹脂製の粉粒体などであってもよい。また、輸送物も液体に限られず、粉体、粒体などであってもよい。   In the above embodiment, air is used as the filling material, but this may use exhaust gas from an engine such as a truck, or may use an inert gas such as nitrogen gas. Further, the supply form may be filled by directly connecting the cartridge instead of using the filling hose. Further, the filler is not limited to gas, but may be a liquid such as water, or may be a powdered synthetic resin powder. Further, the transported material is not limited to a liquid, and may be a powder, a granule or the like.

なお、押え内袋１９をほぼタンク本体１１と同じ容量で構成し、輸送物のタンク本体からの排出の際に、押え内袋１９を膨らませることで、輸送物に背圧をかけてもよく、この場合には粘性の高い輸送物の場合に、円滑且つ迅速に輸送物を排出することができる。   In addition, the presser inner bag 19 may be configured with substantially the same capacity as the tank main body 11, and when the transported item is discharged from the tank main body, the presser inner bag 19 may be inflated to apply back pressure to the transported item. In this case, in the case of a highly viscous package, the package can be discharged smoothly and quickly.

本発明の輸送タンクが用いられるタンクコンテナを示す正面図である。It is a front view which shows the tank container in which the transport tank of this invention is used. タンク本体に適合する輸送内袋のサイズの説明図であり、（Ａ）はタンク本体と輸送内袋の平面を、（Ｂ）はタンク本体の長手方向縦断面を、（Ｃ）はタンク本体の幅方向縦断面をそれぞれ示している。It is explanatory drawing of the size of the transport inner bag which fits a tank main body, (A) is a plane of a tank main body and a transport inner bag, (B) is a longitudinal direction longitudinal cross-section of a tank main body, (C) is a tank main body. A longitudinal section in the width direction is shown. 輸送内袋の製造方法を示す概略の斜視図である。It is a schematic perspective view which shows the manufacturing method of a transport inner bag. 押え内袋を示す平面図である。It is a top view which shows a presser inner bag. 押え内袋の充填物給排口、接続具、接続ホースを示す一部を切り欠いた断面図である。It is sectional drawing which notched a part which shows the filler supply / exhaust port of a presser inner bag, a connector, and a connection hose. 輸送内袋の製造方法を示すフローチャートである。It is a flowchart which shows the manufacturing method of a transport inner bag. 輸送内袋の製造方法における給排口の溶着工程を示す斜視図である。It is a perspective view which shows the welding process of the supply / discharge port in the manufacturing method of a transport inner bag. タンク給排口に内袋給排口を取り付けた状態を示す断面図である。It is sectional drawing which shows the state which attached the inner bag supply / discharge port to the tank supply / discharge port. 筒状フイルムの両端部の溶着工程と、エア抜き工程とを示す斜視図である。It is a perspective view which shows the welding process of the both ends of a cylindrical film, and an air bleeding process. 内袋本体の溶着ラインを拡大して示す平面図であり、（Ａ）は内側と外側の筒状フイルムを４層状態で一括して熱溶着した例を、（Ｂ）は内側筒状フイルムの端部のみを２層状態で熱溶着した後に、内側及び外側の筒状フイルムを４層状態で一括して熱溶着した例を、（Ｃ）は内側筒状フイルムと外側筒状フイルムとのそれぞれの端部を２層状態で熱溶着した例をそれぞれ示している。It is a top view which expands and shows the welding line of an inner bag main part, (A) is the example which carried out the heat welding of the inner side and the outer side cylindrical film collectively in the four-layer state, (B) is an inner side cylindrical film. An example in which the inner and outer tubular films are thermally welded together in a four-layer state after only the end portions are thermally welded in a two-layer state. (C) is an example of an inner tubular film and an outer tubular film, respectively. Each of these examples shows an example of heat-welding the two ends in a two-layer state. 輸送内袋の折り畳み方法を示す説明図である。It is explanatory drawing which shows the folding method of a transport inner bag.

符号の説明Explanation of symbols

１０ タンクコンテナ
１１ タンク本体
１５ タンク給排口
１６ フートバルブ
１７ 充填ホース
１８ 充填物給排口
１９ 押え内袋
２０ 輸送内袋
２１ 内袋本体
２２ 内袋給排口
２３ 筒状フイルム
３０ 内袋吸入防止部材
５０ バルブ
５１ ホース接続具 DESCRIPTION OF SYMBOLS 10 Tank container 11 Tank main body 15 Tank supply / discharge port 16 Foot valve 17 Filling hose 18 Filled material supply / discharge port 19 Presser inner bag 20 Inner bag main body 22 Inner bag main body 22 Inner bag supply / discharge port 23 Cylindrical film 30 Inner bag inhalation prevention member 50 Valve 51 Hose connector

Claims (3)

横置きの円筒体の両端を塞いであり、上部にハッチを、下部の一端にタンク給排口を有するタンク本体と、
このタンク本体の内部に前記ハッチから入れられて、前記タンク給排口に嵌合される内袋給排口を有し、この内袋給排口により該タンク本体内に着脱自在に装着され、前記内袋給排口から輸送物が入れられる封筒型の輸送内袋と、
前記輸送物が入れられた前記輸送内袋と前記タンク本体の上部内面との空間に配置され、前記ハッチに対応した位置に設けられる充填物給排口を有し、この充填物給排口からの充填物の充填により膨出して輸送中の前記輸送内袋の移動を抑える封筒型の押え内袋とを有することを特徴とする輸送タンク。 A tank body that closes both ends of a horizontally placed cylinder , has a hatch at the top, and a tank supply / discharge port at one end of the bottom;
The tank body is inserted from the hatch and has an inner bag supply / exhaust port fitted to the tank supply / exhaust port, and the inner bag supply / exhaust port is detachably mounted in the tank body. An envelope-type transport inner bag into which a package is placed from the inner bag supply / exhaust port;
A filler supply / exhaust port disposed in a space corresponding to the hatch, disposed in a space between the transport inner bag in which the package is placed and the upper inner surface of the tank body; And an envelope-type presser inner bag that suppresses the movement of the transport inner bag during transport by being filled with a filling material. 請求項１記載の輸送タンクを用いて、前記輸送内袋に輸送物を入れて輸送する輸送方法において、
前記押え内袋に充填物を予備充填する押え内袋の予備充填工程と、
前記予備充填をしながら又は予備充填後に、前記輸送物を前記タンク本体の容量よりも少ない未満載状態として前記輸送内袋へ前記輸送物を入れる輸送物充填工程と、
前記押え内袋に充填物を充填し、前記充填物の充填により前記内袋を膨出させて前記未満載状態の輸送内袋の前記タンク本体内での移動を抑えるための押え内袋本充填工程と、
前記押え内袋本充填工程後に前記輸送タンクを用いて輸送を行う輸送工程とを有することを特徴とする輸送方法。 Using the transport tank according to claim 1, a transport method for transporting a transported article in the transport inner bag,
A pre-filling step of the presser inner bag for pre-filling the presser inner bag with a filler,
A package filling step of putting the package into the transport inner bag while pre-filling or after pre-filling, with the package being placed in a state of being less than the capacity of the tank body,
Filling the presser inner bag and filling the presser inner bag for filling the presser inner bag so as to bulge the inner bag to prevent movement of the transported inner bag in the lower load state within the tank body. Process,
And a transporting step of transporting using the transport tank after the presser inner bag main filling step. 前記輸送内袋から前記輸送物を排出する輸送物排出工程を前記輸送工程の後に行い、
この輸送物排出工程では、前記輸送物の排出時に、前記押え内袋に前記充填物を入れて前記輸送物に背圧をかけることを特徴とする請求項２記載の輸送方法。 Performing a transportation discharge process for discharging the transportation goods from the transportation inner bag after the transportation process,
3. The transportation method according to claim 2, wherein, in the transporting material discharging step, when the transporting material is discharged, the packing is put into the presser inner bag and back pressure is applied to the transporting material.
JP2004055305A 2004-02-27 2004-02-27 Transport tank and transport method Expired - Lifetime JP4381175B2 (en)

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