WO2006123698A1

WO2006123698A1 - Inner bag for tank container, method of manufacturing the same, and method of installing the same

Info

Publication number: WO2006123698A1
Application number: PCT/JP2006/309830
Authority: WO
Inventors: Hitoshi Kayama; Masayuki Konno; Shigemi Miyanaga
Original assignee: Maruzen Showa Unyu Co., Ltd.
Priority date: 2005-05-18
Filing date: 2006-05-17
Publication date: 2006-11-23
Also published as: JP4678492B2; JP2006321523A

Abstract

An inner bag for a tank container storably fitted to the inner wall surface of a tank and preventing a liquid cargo from leaking by its damage even if an excessive stress acts on the fitted part of the inner bag to the tank container, a method of manufacturing the inner bag, and a method of installing the inner bag. The inner bag (30) comprises a flange (33) having a flange opening to be connected to the supply/discharge port of the tank flange (13) of the tank container. An annular recessed part thicker than a material forming the inner bag (30) is formed at the peripheral edge of the flange opening, and the peripheral edge part of the opening part of the inner bag (30) is welded to the annular recessed part. Accordingly, when the inner bag (30) is fitted to the supply/discharge port of the tank flange (13), the inner bag (30) is fitted to the inner wall surface of the tank, and a tightening load acting on the inner bag (30) acts only on the flange (33) and does not act on the material itself forming the inner bag (30). As a result, since the inner bag (30) is not damaged, the liquid cargo does not leak therefrom.

Description

Specification

Inner bag for tank container, method for manufacturing inner bag for tank container, and method for attaching inner bag for tanta container

Technical field

[0001] The present invention relates to an inner bag for a tank container used in a tank container for transporting liquid cargo, granular cargo, etc., and particularly preferably an ISO tank container (ISO standard 20 feet which is an international standard). This is related to the inner bag for ISO tank containers applied to (tank containers).

Background art

[0002] Since ISO tank containers are manufactured based on international standards, they are highly safe and have a large transportation volume, which is advantageous in terms of cost and their use is increasing. However, when liquid cargo or granular cargo is transported using an ISO tank container, the inside of the ISO tank container is washed to transport the next liquid cargo or granular cargo etc. at the destination. Therefore, the cost for cleaning the ISO tank container may be generated, and depending on the type of liquid cargo or granular cargo, cleaning wastewater may be difficult to treat.

[0003] Therefore, as a method that can omit the cleaning process of the tank container, the inner bag is accommodated and mounted in the tank container, and the inner bag is replaced every time the transport process is completed, so that the cleaning process in the tank container is performed. A non-cleaning method that eliminates the need to use is used.

As a conventional technology that employs such a non-cleaning method, Patent Document 1 discloses that in an intermediate-sized liquid container of 1000 liter class, an inner bag to be accommodated and mounted in the liquid container can be replaced after use. Is disclosed.

In addition, as a conventional tank container inner bag, Patent Document 2 discloses a tank container inner bag that is devised so that the contents in the inner bag are not spilled when the inner bag is collected from the tank container. .

Patent Document 1: Japanese Unexamined Patent Publication No. 2000-43982

Patent Document 2: JP-A-10-287389 Disclosure of the invention

Problems to be solved by the invention

[0004] In the inner bag for a tank container disclosed in Patent Document 1, a hollow is formed to connect to the pouring outlet at the bottom of the tank, and a socket is inserted into the hollow to attach the inner bag to the tank. Since the sheets that make up the inner bag are directly sandwiched between the inner wall of the tank and the insertion socket, a tightening load is applied to the sheet itself, causing the inner bag to be damaged and stored in the inner bag. Liquid may leak into the tank.

In addition, the tank container inner bag disclosed in Patent Document 2 is attached by directly sandwiching the end portion of the inner bag between the outlet side flange of the container outlet and the valve side flange of the valve. Therefore, as with the inner bag of Patent Document 1, a tightening load acts on the sheet itself, the inner bag may be damaged, and there is a risk of leakage into the liquid force S tank stored in the inner bag. .

[0005] The present invention has been made in view of the above circumstances, and a first problem of the present invention is that when the inner bag is accommodated in the tank container and attached, the inner bag is attached to the inner wall surface of the tank. It can be stored in close contact with the inner bag and damaged due to excessive stress (clamping load) acting on the inner bag and tank mounting part, and liquid cargo stored in the inner bag leaks into the tank. The purpose is to provide an inner bag that will not be lost.

In addition, the second problem of the present invention is that, when the inner bag is accommodated in the tank container and attached, the inner bag can be accommodated in close contact with the inner wall surface of the tank, and the inner bag and the tank are excessively attached to the attachment portion. It is an object of the present invention to provide a method for manufacturing an inner bag that does not break due to stress (clamping load) and liquid cargo stored in the inner bag does not leak into the tank. Furthermore, the third problem of the present invention is that when the inner bag is accommodated in the tank container and attached, the inner bag can be accommodated in close contact with the inner wall surface of the tank, and the inner bag and the tank are excessively attached to the attachment portion. Attach the inner bag to the tank container so that the inner bag is not damaged by the stress (clamping load) and liquid cargo stored in the inner bag leaks into the tank. It is to provide a method.

Means for solving the problem

[0006] In order to solve the first problem, the invention relating to the inner bag for a tank container according to claim 1 includes a flange opening (35) connected to the pouring outlet (14) of the tank container (10). , 35A, 35B) is an inner bag (30) for a tank container provided with a flange (33) formed of a material constituting the inner bag (30) at the periphery of the flange opening (35, 35A, 35B). An annular recess (36) having a thickness larger than the thickness is provided, and the peripheral portion (32) of the opening (31) of the inner bag (30) is welded to the annular recess (36). To do.

Here, the annular recess (36) can be formed integrally with the flange (33) of the tank container inner bag (30) as in the invention described in claim 2.

The annular recess (36) is formed in the flange body (34, 34A, 34B) in which the flange opening (35, 35A, 35B) is formed, as in the invention described in claim 3. Spacer openings (38) with a larger diameter than 35A and 35B) are formed, and spacers (37) thicker than the material constituting the inner bag (30) are laminated and welded. Can also be formed. In order to solve the second problem, the invention according to the method for producing an inner bag for a tank container according to claim 4 provides the production of the inner bag for a tank container according to any one of claims 1 to 3. The peripheral edge of the flange opening (35, 35A, 35B) connected to the inner bag (30) having an opening (31) formed in place and the inlet / outlet (14) of the tank container (10) A flange (33) having an annular recess (36) having a thickness greater than the thickness of the material constituting the inner bag (30) is prepared, and the peripheral portion (32) of the opening (31) is prepared. Is welded to the annular recess (36).

Furthermore, in order to solve the second problem, the invention according to the method for manufacturing an inner bag for tank containers according to claim 5 is the method for manufacturing an inner bag for tank containers according to claim 1 or 3. An inner bag (30) having an opening (31) formed in place, a pair of flange bodies (34, 34A, 34B) having a flange opening (35, 35A, 35B), and the flange opening A spacer opening (38) with a larger diameter than that of (35, 35A, 35B) is formed, and a spacer (37) thicker than the thickness of the material constituting the inner bag (30) is prepared. The peripheral edge (32) of the opening (31) is welded to the peripheral edge of the flange opening (35, 35A) of one flange body (34, 34A), and then the inner bag (30) and the one The spacer (37) and the other flange body (34, 34B) are placed between the flange body (34, 34A) and the spacer (37) and both flange bodies (34). 34A, 34B) so that an annular recess (36) is formed, and the peripheral portion (32) of the opening (31) is disposed in the annular recess (36). Spacer (3 7) and the other flange body (34B) are welded to the one flange body (34, 34A).

[0008] Furthermore, in order to solve the third problem, an invention relating to a method for mounting an inner bag for a tank container according to claim 6 provides an inner container for tank container according to any one of claims 1 to 3. A tank container inner bag mounting method for mounting a bag to a tank container pouring / discharging port, wherein the bag is fixed to a tank wall (11) of the tank container (10) and the pouring / discharging port (14) is formed. The flange (33) of the inner bag (30) is disposed between the tank flange (13) and the valve flange (52) of the injection / discharge valve (50) attached to the tank flange (13), The flange (33) is sandwiched between the tank flange (13) and the valve flange (52), and the inner bag (30) is attached to the inlet / outlet (14).

Here, when the flange (33) is sandwiched between the tank flange (13) and the valve flange (52) and the inner bag (30) is attached to the injection / discharge port (14), the invention according to claim 7 is provided. As shown in the figure, the suction flange (44) of the suction prevention body (40) disposed in the inlet / outlet (14) is connected to the tank flange (13) together with the flange (33) of the inner bag (30). It can also be clamped by the valve flange (52).

[0009] The present invention is basically characterized by the matters described above, but in addition to a manhole where workers enter and exit the tank of the tank container that houses the inner bag according to the present invention. , Upper loading port for loading liquid cargo or granular cargo, safety valve to prevent pressure difference in the tank from increasing, and vent valve to introduce air into the tank when discharging the contents in the tank Etc., and these facilities are attached so as to form irregularities on the inner wall of the tank, so that when the inner bag is stored in the tank, the outer surface of the inner bag is There is a risk of damage such as damage to the inner bag due to contact with the irregularities on the inner wall. Therefore, in order to prevent damage to the inner bag housed in the tank, a bag-breaking prevention material such as urethane foam is interposed between the inner bag and the uneven portion on the inner wall surface of the tank so that the inner bag is attached to the inner wall surface of the tank. Even when it comes into contact with the concavo-convex portion, the inner bag can be prevented from being damaged.

[0010] The material constituting the inner bag is preferably formed from a synthetic resin film or a synthetic resin sheet having flexibility, such as polyethylene and polypropylene. If it is a raw material, it can be formed from a rubber film such as natural rubber or butyl rubber or a rubber sheet. For example, when the inner bag is formed from a synthetic resin film or synthetic resin sheet, the inner bag may be formed from a single synthetic resin film or synthetic resin sheet. It is also possible to employ an inner bag formed by laminating several synthetic resin films or synthetic resin sheets to form a multilayer structure.

[0011] Further, it is preferable to use the same material as the material constituting the inner bag for the flange attached to the opening of the inner bag, but it is also possible to form different types of material forces. At that time, when spacers are welded to the flange body, the thickness of the flange and the thickness of the annular recess, etc., can be achieved simply by stacking a single spacer on one flange body to form the flange. Depending on the flange, several spacers can be stacked on one flange body, one spacer on several flange bodies, or several spacers on several flange bodies. Can also be configured.

In addition, when one or several spacers are stacked on several flange bodies to form a flange, one or several spacers are stacked on one or less than one flange body. It is also possible to form a flanged body with spacers by welding and forming the flange by laminating and welding the remaining flanges on the flanged body with spacers. The invention's effect

[0012] According to the invention relating to the inner bag for a tank container according to claim 1, the thickness of the material constituting the inner bag is determined at the periphery of the flange opening of the flange of the inner bag that is accommodated and mounted in the tank container. An annular recess with a thicker thickness was provided, and the peripheral edge of the opening of the inner bag was welded to the annular recess, so that when the inner bag was attached to the inlet / outlet of the tank, the inner bag The tightening load acting on the inner bag acts only on the flange, and the material constituting the inner bag folded inward so as to overlap the peripheral edge of the opening is tightened. Since heavy does not act, it is possible to reliably prevent the inner bag from being inadvertently damaged and liquid cargo stored in the inner bag from leaking into the tank.

According to the second aspect of the present invention, it is possible to form an annular recess having a thickness substantially equal to the thickness of the material constituting the inner bag only by forming a step on the periphery of the flange opening of the flange. The shape of the mold for forming the flange becomes simple, and the cost can be reduced. According to the third aspect of the present invention, the annular concave portion can be obtained simply by forming the flange main body having the flange opening and the spacer having the spacer opening separately, and laminating and welding the two. Since the flange having the shape can be formed, the shape of the mold for forming the flange is further simplified, and the cost can be further reduced.

[0013] According to the invention relating to the method for manufacturing an inner bag for a tank container according to claim 4, when the inner bag is manufactured, a thickness larger than the thickness of the material constituting the inner bag is formed at the periphery of the flange opening. By preparing a flange with an annular recess and positioning the opening of the inner bag at the flange opening, simply welding the peripheral edge of the opening of the inner bag to the annular recess of the flange. Can be stored in close contact with the inner wall of the tank, and liquid cargo, etc. stored in the inner bag can be stored in the tank container so that it does not leak into the tank. It can be manufactured.

According to the invention relating to the method for manufacturing an inner bag for a tank container according to claim 5, the pair of flange main bodies in which the flange openings are formed, and the spacer in which the spacer openings having a diameter larger than the flange openings are formed. First, the peripheral edge of the opening of the inner bag is welded to one flange body, and then the spacer and the other flange body are inserted between the inner bag and one flange body. The annular recess is formed between the spacer and the pair of flange bodies, and the peripheral edge of the opening is disposed in the annular recess. Since it is welded to one flange body, the inner bag can be stored in close contact with the inner wall of the tank, and at the same time, it can be stored in the tank container so that liquid cargo stored in the inner bag does not leak into the tank. Easy to use inner container for tank container It can be manufactured.

[0014] According to the invention relating to the tank container inner bag mounting method according to claim 6, the tank flange fixed to the tank wall of the tank container, and the valve of the pouring / discharging valve mounted on the tank flange When the inner bag flange is clamped between the flange and the inner bag, the inner bag can be stored in close contact with the inner wall of the tank, and the tightening load between the tank flange and the valve flange can be applied only to the inner bag flange. It does not act on the material itself that forms the inner bag that is folded back inward so as to overlap the peripheral edge of the opening located in the annular recess of the flange. Liquid cargo stored in the tank will not leak into the tank. Thus, the inner bag can be attached to the tank container.

According to the invention relating to the method for attaching the inner bag for tank container according to claim 7, when the inner bag is attached to the tank container, the inner bag suction prevention body is attached together, so that it is stored in the inner bag. When discharging liquid cargo or granular cargo, it becomes easy to install a suction prevention body that functions to prevent the inner bag from being sucked.

Brief Description of Drawings

FIG. 1 is a side view of a tank container equipped with a tank container inner bag according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of part A in FIG.

FIG. 3 is an exploded view of FIG.

[Fig. 4] A plan view of the flange according to the first embodiment (A), a cross-sectional view (B) along line B-B in Fig. 4 (A), and a state in which the inner bag is welded to the flange. It is sectional drawing (C) shown.

[FIG. 5] A plan view of the flange according to the second embodiment (A), a cross-sectional view (B) along the line CC in FIG. 5 (A), and a state in which the inner bag is welded to the flange. It is sectional drawing (C) shown.

[Fig. 6] Plan view of flange according to the third embodiment (A), sectional view along line D-D in Fig. 6 (A), and state in which inner bag is welded to flange It is sectional drawing (C) which shows this.

Explanation of symbols

[0016] 10 tank containers, 11 tanks, 12 tank walls, 13 tank flanges, 14 outlets, 15 bolts, 16 nuts, 20 manholes, 21 manhole covers, 22 safety valves, 23 vent valves, 24 bag breakage prevention materials, 25 Tank holding frame, 26 brace material, 30 inner bag, 31 opening, 32 peripheral edge, 33 flange, 34, 34A, 34B flange body, 35, 35A, 35B flange opening, 36 annular recess, 37 spacer, 38 Spacer opening, 39 Welded part, 40 Suction prevention body, 41 Prevention body frame, 42 Cylindrical wall, 43 Prevention body opening, 44 Prevention body flange, 45 Prevention body flange opening, 46 Prevention body flange bolt hole, 50 Note Drain valve, 51 Valve housing, 52 Valve flange, 53 Valve flange opening, 54 Valve flange bolt hole, 55 Inlet conduit, 56 Outlet conduit, 57 Cap, 58 Valve control lever

BEST MODE FOR CARRYING OUT THE INVENTION

[0017] A tank container inner bag according to an embodiment of the present invention, based on Figs. explain.

First, the tank container will be described with reference to FIG.

The tank container 10 shown in Fig. 1 (ISO standard 20-foot tank container) 10 can transport approximately 20 tons of liquid cargo and granular cargo. Tank 11 is used for rail transport and ship transport. The outer periphery is protected by the tank holding frame 25, and the tank 11 is fixed to a predetermined position of the tank holding frame 25 via a brace material 26 extending from the tank holding frame 25.

A tank 11 is provided with a manhole 20 at an upper portion thereof, and a manhole cover 21 is provided in the manhole 20 so as to be freely opened and closed. In addition, the upper part of the tank 11 is not illustrated to load liquid cargo or granular cargo into the tank! An upper loading port is provided, and a lid (not shown) can be opened and closed freely at the upper loading port. Is provided. Further, a safety valve 22 and a vent valve 23 are installed at the upper part of the tank 11.

The safety valve 22 functions to prevent the pressure difference in the tank 11 from increasing, that is, functions as a pressure adjustment valve. In addition, the vent valve 23 has a function of introducing the air in order to eliminate the negative pressure generated in the tank 11 when discharging liquid cargo or granular cargo stored in the tank 11.

[0018] In addition, a pouring / discharging valve 50 for pouring / dispensing liquid cargo or granular cargo stored in the tank 11 is installed at the lower end of one end of the tank 11. As shown in FIG. 2, the discharge valve 50 is attached to the tank flange 13 of the tank wall 12 via bolts 15 and nuts 16. Furthermore, as shown in FIG. 1 and FIG. 2, the tank 11 is configured so as to be able to accommodate the tank container inner bag 30 according to the embodiment of the present invention. Bolt so that suction prevention body 40 functions so that inner bag 30 is not sucked into injection / discharge valve 50 when liquid cargo or granular cargo is discharged from inner bag 30. 15 and nut 16 are attached.

Next, based on FIG. 4, the first form of the inner bag 30 and the flange 33 housed in the tank 11 and the method of joining the flange 33 of the first form to the inner bag 30 will be described. To do. The inner bag 30 is formed of, for example, a synthetic resin film or a synthetic resin sheet having flexibility such as polyethylene and polypropylene. As shown in FIG. It is configured to accommodate approximately 20 tons of liquid cargo and granular cargo when deployed along the inner wall.

The inner bag 30 includes a flange 33 that is used when the opening 31 of the inner bag 30 is sandwiched between the tank flange 13 of the tank wall 12 and the valve flange 52 of the injection / discharge valve 50. .

For example, the flange 33 has the same material force as that of the inner bag 30. In the first embodiment shown in FIG. 4, a substantially circular flange opening 35 is formed at the substantially center of the flange 33. An annular recess 36 is formed integrally with the flange 33 along the periphery. As shown in FIG. 4 (C), the annular recess 36 is formed by the thickness of the material constituting the inner bag 30 (a synthetic resin film or a synthetic resin sheet having flexibility such as polyethylene and polypropylene). As will be described later, when the flange 33 is sandwiched between the tank flange 13 and the valve flange 52, the tightening load acting on the flange 33 is affected by the peripheral edge of the opening 31. The thickness is set so as not to work on the material constituting the inner bag 30 folded inward so as to overlap the portion 32, that is, about twice the thickness of the material constituting the inner bag 30.

Further, in the flange 33 of the first form shown in FIG. 4, the annular recess 36 is formed in the body by, for example, injection molding.

In the first embodiment shown in FIG. 4, the opening 31 of the inner bag 30 is formed in accordance with the sizes of the flange opening 35 and the annular recess 36 of the flange 33, and is formed on the periphery of the opening 31 of the inner bag 30. A welding peripheral edge 32 having a predetermined width is formed, and the peripheral edge 32 of the opening 31 of the inner bag 30 is flanged by a heat welding device (not shown) in a state where the peripheral edge 32 is positioned in the annular recess 36 of the flange 33. A flange 33 is formed in the opening 31 of the inner bag 30 by welding to the annular recess 36 of 33.

In the first embodiment, the thickness of the flange 33 is 2 mm, the outer diameter of the flange 33 is 158 to 16 Omm, the inner diameter of the flange opening 35 is 108 to: L 10 mm, the inner diameter of the annular recess 36 is 130 mm, the annular recess 36 The thickness of the material of the inner bag 30 is set to 0.5 mm or less, but the shape and size of the mounting location of the flange 33 or the liquid to be transported Depending on the type of cargo or granular cargo, the thickness and The dimensions of the lunge 33 are changed as appropriate.

Further, in the first embodiment shown in FIG. 4, the opening 31 of the inner bag 30 is formed in accordance with the sizes of the flange opening 35 and the annular recess 36 of the flange 33, and the opening 31 of the inner bag 30 is formed on the periphery of the opening 31. The force forming the welding peripheral edge 32 of a predetermined width After the sheet-like inner bag 30 is welded to the annular recess 36 of the flange 33, the opening 31 of the inner bag 30 is formed, and the inner bag 30 is placed in the tank 11 Fold the inner edge of the opening 31 of the inner bag 30 inward so that it overlaps the peripheral edge 32.

Next, a method of joining the inner bag 30 and the flange 33 according to the second embodiment and the flange 33 of the second embodiment to the inner bag 30 will be described based on FIG.

In the second form according to FIG. 5, the inner bag 30 and the flange 33 are configured with the same material force as in the first form according to FIG.

In the second form according to FIG. 5, the flange 33 is formed with a flange main body 34 in which a flange opening 35 is formed, and a spacer opening 38 having a diameter larger than that of the flange opening 35 to form an inner bag 30. It consists of a spacer 37 that is thicker than the thickness of the material, i.e., about twice the thickness of the material that constitutes the inner bag 30 that is folded inward so as to overlap the peripheral edge 32 of the opening 31. It can be manufactured by at least two manufacturing methods described below.

First, in the case of the first manufacturing method, as shown in FIG. 5 (B), a spacer 37 is laminated on the flange main body 34, and both are welded at a welding portion 39 by a heat welding device (not shown). The flange 33 having the annular recess 36 having a thickness larger than the thickness of the material constituting the inner bag 30 is formed.

Next, as shown in FIG. 5C, the opening 31 of the inner bag 30 is formed in accordance with the sizes of the flange opening 35 and the annular recess 36 of the flange 33, and the periphery of the opening 31 of the inner bag 30 is formed. A welding peripheral edge 32 having a predetermined width is formed on the peripheral edge 32 of the opening 31 of the inner bag 30 by means of a heat welding device (not shown) with the peripheral edge 32 positioned in the annular recess 36 of the flange 33. A flange 33 is formed in the opening 31 of the inner bag 30 by welding to the annular recess 36 of the flange 33. Further, in the case of the second manufacturing method, a welding peripheral edge 32 having a predetermined width is formed on the peripheral edge of the opening 31 of the inner bag 30, and the peripheral edge 32 is positioned on the peripheral edge of the flange opening 35 of the flange body 34. In this state, the peripheral edge of the opening 31 of the inner bag 30 by a heat welding device (not shown) The part 32 is welded to the periphery of the flange opening 35 of the flange body 34.

Next, the spacer 37 is sandwiched between the inner bag 30 and the flange body 34 so that the spacer opening 38 of the spacer 37 surrounds the peripheral edge 32 of the opening 31 of the inner bag 30. Spacer 37 is stacked on flange body 34. In this state, the spacer 37 is welded to the flange main body 34 by the welding portion 39 by a heat welding device (not shown).

[0022] While the two manufacturing methods for manufacturing the flange 33 of the second embodiment according to Fig. 5 have been described above, as shown in Fig. 5 (C), the inner bag 30, the flange body 34, and the spacer In the state in which 37 is disposed together, the peripheral edge portion 32 of the opening 31 of the inner bag 30 can be welded to the flange main body 34 and the spacer 37 by a heat welding device (not shown).

Further, in the second embodiment shown in FIG. 5, the opening 31 of the inner bag 30 is formed in accordance with the sizes of the flange opening 35 of the flange 33 and the annular recess 36, and the opening 31 of the inner bag 30 is formed on the periphery of the opening 31. The force that forms the welding peripheral edge 32 of a predetermined width The inner bag 30 after the sheet-like inner bag 30 is welded to the annular recess 36 of the flange 33 or the periphery of the flange opening 35 of the flange body 34 When the inner bag 30 is mounted in the tank 11, the peripheral edge of the opening 31 of the inner bag 30 may be folded back inward so as to overlap the peripheral edge 32.

Note that the dimensions of the material of the flange 33 and the inner bag 30 according to the second embodiment shown in FIG. 5 are as follows when the flange 33 is formed using one flange body 34 and one spacer 37. 4 is set to the same dimensions as the first form shown in Fig. 4. However, like the first form shown in Fig. 4, the shape and dimensions of the mounting location of the flange 33, or the liquid cargo or granular cargo to be transported, etc. Depending on the type, the thickness of the material constituting the inner bag 30 and the dimensions of the flange main body 34 and the spacer 37 constituting the flange 33 are appropriately changed.

Next, a method for joining the inner bag 30 and the flange 33 according to the third embodiment and the flange 33 of the third embodiment to the inner bag 30 will be described based on FIG.

In the third embodiment according to FIG. 6, the inner bag 30 and the flange 33 have the same material force as the first and second embodiments according to FIGS.

In the third embodiment shown in FIG. 6, the flange 33 includes a pair of flange bodies 34A and 34B in which flange openings 35A and 35B are formed, and a spacer opening 38 having a larger diameter than the flange openings 35A and 35B. Is formed and thicker than the thickness of the material constituting the inner bag 30, i.e. It is composed of a spacer 37 having a thickness approximately twice that of the material constituting the inner bag 30 folded inward so as to overlap the peripheral edge 32 of the opening 31.

Here, the flange opening 35A of the flange main body 34A is formed to have a smaller diameter than the flange opening 35B of the flange main body 34B.

In the third embodiment shown in FIG. 6, a welding peripheral edge 32 having a predetermined width is formed on the peripheral edge of the opening 31 of the inner bag 30, and the peripheral edge 32 is formed on the peripheral edge of the flange opening 35A of the flange main body 34A. In the positioned state, the peripheral edge portion 32 of the opening 31 of the inner bag 30 is welded to the peripheral edge of the flange opening 35A of the flange main body 34A by a heat welding device (not shown).

Separately, a spacer 37 is laminated on the flange main body 34B, and both are welded by a heat welding device (not shown) to provide an annular recess 36 that is thicker than the thickness of the material constituting the inner bag 30. Further, the flange body 34B with the spacer 37 is formed.

Next, insert flange body 34B with spacer 37 between inner bag 30 and flange body 34A so that spacer 37 is positioned between both flange bodies 34A and 34B. An annular recess 36 is formed between 34A and 34B. In this annular recess 36, the opening 31 of the inner bag 30 is folded inward so as to overlap the periphery 32, and the spacer 37 Attach the flange body 34B to the flange body 34A. In this state, the flange main body 34B with the spacer 37 is welded to the flange main body 34A by a heat welding device (not shown).

In the third embodiment shown in FIG. 6, the opening 31 of the inner bag 30 is formed in accordance with the sizes of the flange openings 35A and 35B of the flange main bodies 34A and 34B and the annular recess 36, and the opening 31 of the inner bag 30 is formed. After forming the sheet-like inner bag 30 on the periphery of the flange opening 35A of the flange main body 34A, the opening 31 of the inner bag 30 is formed. Thus, the peripheral edge of the opening 31 of the inner bag 30 may be folded inward so as to overlap the peripheral edge 32.

Here, in the third embodiment shown in FIG. 6, the overall thickness of the flange 33 is set to 3 mm, and the flange body 34A constituting the flange 33 has a thickness of lmm, an outer diameter of 164 mm, and a flange opening. 35A has an inner diameter of 108mm, flange body 34B has a thickness of lmm, an outer diameter of 164mm, flange opening 35B has an inner diameter of 130mm, and spacer 37 has a thickness of lmm, outer diameter is 164mm, and the inner diameter of spacer opening 38 is set to 140mm. As a result, the annular recess 36 formed in the flange 33 has an inner diameter of 140 mm and a thickness of 1 mm, and the thickness of the material constituting the inner bag 30 is set to a force flange 33 or less. Depending on the shape and size of the mounting location of the container, or the type of liquid cargo or granular cargo to be transported, the thickness of the material constituting the inner bag 30 and the flange bodies 34A, 34B and The dimensions of the spacer 37 are changed as appropriate.

In the third embodiment shown in FIG. 6, the flange opening 35A of the flange main body 34A is described as having a smaller diameter than the flange opening 35B of the flange main body 34B. As a pair of flange main bodies, the flange main body 34A or When only 34B is used, the pair of flange bodies can be formed with the same shape, that is, only one of the flange bodies 34A or 34B, so that the flange body and, therefore, the cost of manufacturing the flange can be further increased. Can be reduced.

Next, a method for attaching the inner bag 30 with the flange 33 to the tank container 10 will be described with reference to FIGS.

First, the inner bag 30 with the flange 33 is taken into the tank 11 from the manhole 20 of the tank container 10 shown in FIG.

Next, the flange 33 of the inner bag 30 is taken out of the tank 1 from the inlet / outlet port 14 formed in the tank flange 13 attached to the tank wall 12.

After that, after the suction prevention body 40 is inserted into the flange opening 35 of the flange 33, a plurality of prevention body flange bolt holes 46 formed in the prevention body flange 44 of the suction prevention body 40 are fixed to the tank flange 13. Insert each into bolt 15. In this state, the flange 33 of the inner bag 30 is folded inward so that the peripheral edge of the opening 31 of the inner bag 30 overlaps the peripheral edge 32, and is sandwiched between the tank flange 13 and the prevention body flange 44. , Temporarily held. Next, the plurality of valve flange bolt holes 54 formed in the valve flange 52 of the injection / discharge valve 50 are respectively inserted into the plurality of bolts 15 fixed to the tank flange 13.

Finally, nuts 16 are screwed onto the respective bolts 15 to complete the mounting operation of the inner bag 30, the suction prevention body 40, and the injection / discharge valve 50 to the tank container 10 as shown in FIG.

In addition, as shown in FIG. 2, the suction preventing body 40 is attached to the tank 11 and the preventing body The frame 41, the cylindrical wall 42, and the prevention body opening 43 formed in the cylindrical wall 42 are mounted so as to protrude into the tank 11 from the inner surface of the tank wall 12, and the liquid cargo stored in the inner bag 30 When discharging granular cargo etc., the inner bag 30 is not sucked so that liquid cargo and granular cargo etc. can be discharged smoothly through the preventive body flange opening 45 and the valve flange opening 53 described later. I have to.

In addition, the discharge valve 50 is formed with a valve flange opening 53, and a valve housing 51 having an inlet conduit 55 and an outlet conduit 56 is fixed to a valve flange 52 that is fastened to the tank flange 13. A valve operating lever 58 for opening and closing 50 is provided, and a cap 57 is detachably attached to the outlet conduit 56 !.

In addition, as shown in FIG. 2, the inner bag 30 is accommodated in the tank 11, and the flange 33 of the inner bag 30 is configured such that the periphery of the opening 31 of the inner bag 30 is the peripheral portion 32. The inner bag 30 is folded back inward so that it overlaps and is sandwiched between the tank flange 13 and the prevention body flange 44, but the inner bag 30 is folded back inward so that the peripheral edge of the opening 31 overlaps the peripheral edge 32. Positioned in the annular recess 36 of the flange 33, the tightening load for tightening the prevention flange 44 to the tank flange 13 does not act on the material constituting the inner bag 30!

Furthermore, since the inner bag 30 can be mounted so as to come into contact with the inner surface of the tank wall 12 through the inlet / outlet port 14 formed in the tank flange 13, the load of liquid cargo or granular cargo stored in the inner bag 30 can be accommodated. Even if it acts on the bag 30, it does not act on the welded portion between the inner bag 30 and the flange 33, so that the peripheral edge 32 of the opening 31 of the inner bag 30 has the flange 33 force when the tank container 10 is transported. It won't come off!

Further, as shown in FIG. 2, the inner bag 30 can be mounted so as to come into contact with the inner surface of the tank wall 12 through the inlet / outlet port 14 formed in the tank flange 13, so that the liquid cargo stored in the inner bag 30 When transport cargo such as granular cargo is discharged, it is possible to discharge so that no transport cargo remains in the tank 11, that is, the inner bag 30.

As shown in FIG. 1, in the tank container 10, in addition to the manhole 20, an upper loading port, a safety valve 22, a vent valve 23, and the like (not shown) are formed with uneven portions that protrude into the tank 11. Therefore, liquid cargo, granular cargo, etc. oscillate when the tank container 10 is transported by storing liquid cargo, granular cargo, etc. in the inner bag 30 accommodated in the tank 11. Then, the outer surface of the inner bag 30 may come into contact with the uneven portion protruding into the tank 11, and the inner bag 30 may be damaged. Therefore, the inner bag 30 and the uneven portion protruding into the tank 11 may be damaged. It is also possible to intervene with a bag breakage prevention material 24 such as urethane foam.

Claims

The scope of the claims

[1] A tank container inner bag (30) provided with a flange (33) formed with a flange opening (35, 35A, 35B) connected to a pouring outlet (14) of a tank container (10). An annular recess (36) having a thickness larger than the thickness of the material constituting the inner bag (30) is provided at the periphery of the flange opening (35, 35A, 35B), and the annular recess (36) An inner bag for a tank container, wherein the peripheral edge (32) of the opening (31) of the inner bag (30) is welded to the inner bag (30).

[2] The tank container inner bag according to claim 1, wherein the annular recess (36) is formed integrally with the flange (33).

[3] The annular recess (36) has a larger diameter than the flange opening (35, 35A, 35B) in the flange body (34, 34A, 34B) in which the flange opening (35, 35A, 35B) is formed. A spacer opening (38) is formed, and the spacer (37) is formed by laminating and welding a spacer (37) having a thickness greater than the thickness of the material constituting the inner bag (30). The inner bag for a tank container according to claim 1.

[4] A method for manufacturing an inner bag for a tank container according to any one of claims 1 to 3, wherein an inner bag (30) having an opening (31) formed at an appropriate position, and an tank bag (10) Note An annular recess (36) with a thickness greater than the thickness of the material constituting the inner bag (30) is recessed at the periphery of the flange opening (35, 35A, 35B) connected to the discharge port (14). A method for manufacturing an inner bag for a tank container, comprising: providing a flange (33), and welding a peripheral edge (32) of the opening (31) to the annular recess (36).

[5] A method for manufacturing an inner bag for a tank container according to claim 1 or 3, wherein the inner bag (30) has an opening (31) formed at an appropriate position, and a flange opening (35, 35A, 35B). A pair of flange bodies (34, 34A, 34B) formed with a spacer opening (38) larger in diameter than the flange openings (35, 35A, 35B) are formed, and the inner bag (30) is A spacer (37) with a thickness greater than the thickness of the material to be constructed is prepared, and the peripheral edge (32) of the opening (31) is connected to the flange opening (35 of one flange body (34, 34A). 35A), and then, between the inner bag (30) and the one flange body (34, 34A), the spacer (37) and the other flange body (34, 34B). ) So that an annular recess (36) is formed between the spacer (37) and the two flange bodies (34, 34A, 34B), and the annular recess (36) The peripheral portion (32) of the opening (31) is disposed, and the spacer (37) and the other flange body (34B) are welded to the one flange body (34, 34A). A method for producing an inner bag for a tank container.

[6] A tank container inner bag mounting method for mounting the tank container inner bag according to any one of claims 1 to 3 to an inlet / outlet of the tank container, the tank wall of the tank container (10) Between the tank flange (13) fixed to (12) and formed with the inlet / outlet port (14) and the valve flange (52) of the inlet / outlet valve (50) attached to the tank flange (13). The flange (33) of the inner bag (30) is disposed on the inner bag (30), and the flange (33) is sandwiched between the tank flange (13) and the valve flange (52). A method for attaching an inner bag for a tank container, comprising: attaching to the pouring outlet (14).

[7] The prevention body flange (44) of the suction prevention body (40) disposed in the injection / discharge port (14) is clamped together with the flange (33) of the inner bag (30). The method for mounting the inner bag for a tank container according to claim 6.