JP2003285895A - Tank container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tank container with a machine chamber which is of a simple structure and reduced in weight. <P>SOLUTION: The tank container comprises a tank including a cylindrical shell plate and end plates connected with both ends thereof which are surrounded by a container frame and made into a single unit, a skirt 14 connected with the end plate 12a of the tank, and an end frame 23 of the container frame further connected with the skirt 14. The tank container has a space defined by the end plates 12, the skirt 14 and a wall plate 30 including a door 31 attached to the end frame 23 as the machine chamber 20 for storing valves. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank container in which a tank for storing a liquefied gas or the like is integrated with a container frame, and more particularly to a tank container in which a device room for storing valves is formed in a skirt.

[0002]

2. Description of the Related Art High-pressure gas such as liquefied gas and liquids such as petroleum that are treated as dangerous substances are generally transported by a dedicated vehicle such as a tank truck or a liquefied natural gas transport ship, a dedicated transport ship, or a dedicated train. It was However, this limits the combinations of transportation means, which raises a problem of increased transportation cost and poor efficiency. Therefore, conventionally, a tank container was developed by enclosing a tank with a container frame composed of a hexahedral frame and integrating it, and it is not limited to a dedicated vehicle, and can be easily transshipped between various transportation means such as railroad wagons and trailers. ,It is used.

[0003]

However, the conventional tank container is provided with a valve or the like for supplying or discharging the liquefied gas to be transported to the tank,
Since the equipment room for storing such valves for storing such valves was specially configured, the structure was complicated. In addition, in the structure where the equipment room for storing valves etc. protrudes from the container frame, it has a strong structure to protect the valve etc. from impact, which increases the manufacturing cost of the tank container,
It also increased the overall weight.

[0004] Therefore, an object of the present invention is to provide a tank container having a simple structure and a lightweight device room.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a tank container in which a tank composed of a cylindrical body plate portion and end plate portions connected to both ends thereof is surrounded by a container frame and integrated.
A skirt is connected to an end plate of the tank, and an end frame of the container frame is connected to the skirt, and the end plate of the container frame and the skirt, and a wall plate having a door attached to the end frame The space defined by the above is configured as an equipment room for storing valves. Therefore, according to the tank container of the present invention, by utilizing the space formed by the skirt as an equipment room, it is not necessary to specially create a space for storing a valve or the like as in the conventional case, and the equipment room can be made extremely small. Since the structure can be simple, and since it is configured inside the container frame, it is not necessary to make it solid, and the weight can be reduced.

Further, in the tank container of the present invention, among the skirts connected to both ends of the tank, the skirt forming the equipment chamber has a larger axial dimension than the other skirt. Characterize. Therefore, according to the present invention, it is possible to increase the space in the skirt forming the equipment chamber and increase the volume of the tank accommodated in the container frame.

Further, the tank container of the present invention is characterized in that the skirt has a cylindrical shape or an arch shape. Therefore, if a cylindrical skirt is used, the cost can be reduced because the skirt can be easily obtained from the pipe material, and if one arch-shaped skirt is used, the space inside the equipment room can be made wider. become.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a tank container according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a tank container, and FIG. 2 is a plan view thereof. The tank container 1 has a tank 2 for storing liquefied gas and the like assembled in a container frame 3 of a hexahedral frame, which enables transshipment between various transportation means such as a transport ship, a rail freight car, or a trailer. It is a thing.

The capsule-shaped tank 2 has a double structure including a tank main body 11 for directly containing high-pressure gas and an outer layer tank 12 forming an outer shell thereof. Since the tank 2 has an unstable shape, it is integrally formed with the container frame 3 surrounding the tank 2 so as to be in a stable state. The tank main body 11 and the outer layer tank 12 that constitute the tank 2 are both of a capsule type in which end plates are welded to both ends of a cylindrical body plate, and the end plate of the outer layer tank 12 has a so-called skirt. Cylindrical joint member (hereinafter simply referred to as "skirt") 13,
14 are fitted together.

The tank 2 has such skirts 13, 14
Are welded to both ends, and saddles 15 are attached to arbitrary two positions in the longitudinal direction. Saddle 15,15
Is for putting the tank 2 in a stable state,
It is a saddle-shaped base having a curved surface that matches the curvature of the outer layer tank 12. On the other hand, in the container frame 3, the lower digits 21 and 21 and the upper digits 22 and 22 in the longitudinal direction are connected to the square end frames 23 and 23 at both ends, and a reinforcing material is appropriately stretched over the digits 21 and 22 to form a tank. A frame surrounding 2 is configured. And the tank 2 in the container frame 3 is the skirt 1
3, 14 are connected to the end frames 23, 23, the saddle 15,
15 is fixed to the lower digits 21 and 21 to be integrated.

Next, the equipment room for storing the valves of the tank container 1 will be described. In this embodiment, the tank 2
The equipment room is configured by utilizing the space formed by the skirt 14 that fixes the to the end frame 23. As shown in FIG. 1, one of the skirts 14 has a dimension that is long in the axial direction and has a depth to form a space that constitutes an equipment room. FIG. 3 is a piping configuration diagram showing the inside of the equipment chamber as seen from the direction of arrow A in FIG. In this way, in the equipment room 20,
Valves for filling and discharging the liquefied gas to the tank 2 and for collecting the gas accumulated in the tank 2 are arranged and piped as shown in the drawing.

The fluid circuit of the tank container 1 will be briefly described. FIG. 7 is a piping system diagram of the tank container. The container tank 1 is provided with a liquid port 51 for filling and discharging the liquefied gas and a gas port 52 for collecting the gas accumulated in the tank.
The flow path connected to the liquid port 51 branches via an emergency cutoff valve 53, and communicates with the ceiling side and the bottom side of the tank body 11 via a filling valve 54 and a discharge valve 55, respectively. On the other hand, the flow path connected to the gas port 52 communicates with the tank body 11 via the gas recovery valve 56. Furthermore,
A liquid level gauge 57 for measuring the height of the liquid level in the tank body 11, an inner tank pressure gauge 58 for measuring the gas pressure, and other various valves are arranged in this circuit.

In the tank container 1, the liquefied gas from the gas supply side is received from the liquid port 51, and the liquefied gas is supplied into the tank body 11 via the emergency shutoff valve 53 and the filling valve 54 (however, the discharge valve 55). May be supplied from). At that time, the gas accumulated in the tank body 11 is extracted from the gas port 52. On the other hand, when discharging the liquefied gas from the tank container 1, a hose is connected to the filling port of the liquid port 51, and the discharge valve 55 and the emergency shutoff valve 5 are connected there.
The liquefied gas in the tank body 11 flows and is supplied via 3. At that time, the gas accumulated on the filling side is recovered in the tank main body 11 via the hose connected to the gas port 52.

In the tank container 1, valves for supplying and discharging such liquefied gas are housed in the equipment chamber 20 as shown in FIG. As shown in FIG. 4, the equipment room 20 formed in the skirt 14 is a closed space in which a wall plate 30 with opening / closing doors 31, 31 is attached to the end frame 23. 4 is a view showing the end surface of the tank container 1 as seen from the direction of arrow A in FIG. 1, and FIG. 5 is a view showing the internal space of the equipment room taken along the line BB in FIG. . In other words, the equipment room 20
As shown in FIG. 5, the space is defined by the skirt 14, the wall plate 30, and the end plate portion 12 a of the outer layer tank 12.

As shown in FIG. 4, the wall plate 30 has reinforcing plates having different plate thicknesses attached to the upper and lower four corners of the end frame 23 that do not overlap the skirt 14, and the end frame 23 and the skirt 14 are attached to the wall. It is connected. The open / close doors 31 and 31 are attached to a door frame 33 provided so as to project from the wall plate 30. The valve and the like arranged in the equipment room 20 are arranged in the space of the skirt 14 in a range overlapping with the opening / closing doors 31, 31 as shown in FIG. 3, and work is performed when the opening / closing doors 31, 31 are opened. Person can handle it. A window 32 is attached to the opening / closing door 31 so that the value of the inner tank pressure gauge 58 can be confirmed from the outside.

The open / close doors 31, 31 are attached to a door frame 33 fixed to the center of the wall plate 30 by hinges 34 so as to open from the center to both sides. Then, the tank container 1 is transported with the opening / closing doors 31, 31 closed,
A lock mechanism is provided on the inside so that the upper and lower rods 36 and 37 are inserted into the lock holes by the operation of the levers 35 and 35 so as not to be easily opened during the transportation. On the other hand, stoppers 38, 38 are provided so that the opening / closing doors 31, 31 remain open during the operation such as filling with liquefied gas. The stopper 38 is a bar member whose both ends are bent at right angles, and normally, the stopper 38,
It is hooked inside 31 (refer to the left side door in FIG. 6), and the open / close doors 31, 31 are opened during the work.
As shown in the right side door of FIG. 6, the opening / closing of the opening / closing door 31 is restricted.

Although the tank container 1 has been described above, according to the present embodiment, the space formed by the skirt 14 is used as the equipment chamber 20, so that a space for storing valves and the like as in the conventional case. There is no need to make a special. Therefore, the structure of the equipment room 20 can be extremely simplified, and since it is configured inside the container frame 3, it is not necessary to make it strong, and the weight can be reduced. Furthermore, this also reduced the manufacturing cost of the tank container 1.

Although the tank container has been described by showing one embodiment, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the skirt is used as a part of the equipment chamber 20 while having a cylindrical shape, but it may be modified to have an arch shape. Further, in the above-described embodiment, the door of the equipment room is opened to the left and right, but other than this, it is possible to use various doors such as one-sided open, top-opened, or shutter, and the shape thereof is not only square but also circular. May be

[0019]

According to the present invention, a skirt is connected to an end plate portion of a tank, and the end frame of the container frame is connected to the skirt, and the end plate and the skirt and the end frame are connected to the end plate. Since the space defined by the wall plate with the attached door is configured as a device room for storing valves, it is possible to provide a tank container having a simple structure and a lightweight device room. It was

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a tank container.

FIG. 2 is a plan view showing an embodiment of a tank container.

FIG. 3 is an internal piping configuration diagram showing the inside of the equipment chamber as seen from the direction of arrow A in FIG.

FIG. 4 is a view showing an end surface of the tank container 1 as seen from the direction of arrow A in FIG.

5 is a view showing an internal space of an equipment room taken along the line BB in FIG.

FIG. 6 is a view showing a state in which an opening / closing door of the equipment room is opened.

FIG. 7 is a piping system diagram of a tank container.

[Explanation of symbols]

1 tank container 2 tanks 3 container frames 14 skirt 20 equipment room 30 wallboard 31 open / close door

Claims (3)

[Claims] 1. A tank container in which a tank composed of a cylindrical body plate portion and end plate portions connected to both ends thereof is surrounded by a container frame to be integrated, and a skirt is connected to the end plate portion of the tank. A device for storing a valve in a space formed by a skirt to which an end frame of the container frame is connected, the end plate of the container frame, the skirt, and a wall plate having a door attached to the end frame. A tank container characterized by being configured as a chamber. 2. The tank container according to claim 2, wherein among the skirts connected to both ends of the tank, a skirt forming the equipment chamber has a larger axial dimension than the other skirt. A tank container characterized by being. 3. The tank container according to claim 1 or 2, wherein the skirt has a cylindrical shape or an arch shape.