CN105540075A - Tank container - Google Patents

Abstract

The invention provides a tank container, which comprises a tank body and two end frames located at both ends of the tank body, each of the two ends of the tank body is fixedly connected to one of the end frames through a set of connecting structures; each set of connecting structures includes a plurality of The connectors distributed in the circumferential direction of the tank body; the two ends of each connector are respectively connected to the end frame and the tank body. In the tank container of the present invention, the tank body and the end frame are connected by a plurality of connecting pieces distributed in the circumferential direction, so that the end frame forms an effective support for the tank body. The connecting structure composed of multiple connecting parts is lighter than the connecting ring structure in the prior art. When the connecting parts are made of circular steel pipes, the weight can be about 5% lighter than the prior art, reducing the weight of the tank container and improving the storage and transportation capacity . At the same time, the load is transmitted through multiple connecting parts, the mechanical distribution is more reasonable, the force is uniform, and the structure is safe and reliable.

Description

tank container

technical field

The invention relates to the field of storage and transportation equipment, in particular to a tank container.

Background technique

The main structure of the tank container is composed of the tank body and the frame supporting the tank body. The tank container can store and transport different media according to the needs. For the tank container for storing and transporting the gas medium, in the prior art, the gap between the tank body and the frame is A cylindrical connecting ring is often used for connection. One end of the connecting ring is open to connect to the end of the tank, and the other end is open to connect to the frame. This connection structure has a large self-weight and will lose load-carrying space.

Contents of the invention

The purpose of the present invention is to provide a tank container, which solves the problem in the prior art that the load space is damaged by the self-heaviness.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a tank container, including a tank body and two end frames located at both ends of the tank body, each of the two ends of the tank body is fixedly connected to one of the end frames through a set of connection structures; The set of connecting structures includes a plurality of connecting pieces distributed along the circumference of the tank body; two ends of each connecting piece are respectively connected to the end frame and the tank body.

Preferably, the end frame includes four side beams located around and diagonal braces connected between every two adjacent side beams; the diagonal braces are connected with the connecting pieces.

Preferably, each said brace is correspondingly connected to at least one said connecting piece.

Preferably, the brace is a square tube or a flat plate.

Preferably, the connecting piece is parallel to the central axis of the tank body.

Preferably, the connecting pieces are evenly distributed along the circumference of the tank body.

Preferably, the connecting piece is steel pipe or section steel.

Preferably, the tank body includes a cylinder and a head connected to both ends of the cylinder; the head includes a spherical cap, a straight portion, and a transition portion connected between the spherical cap and the straight portion; the straight portion It is docked with the barrel; the transition part is connected with the connecting piece.

Preferably, a backing plate is provided at one end of the connecting member facing the head, and the backing plate is attached to the outer surface of the transition portion.

Preferably, a strengthening member is further provided on the head corresponding to the transition portion.

Preferably, the reinforcement includes a hoop rib and/or a radial rib; the hoop rib is vertically connected to the transition portion, and the hoop rib extends axially along the transition portion and encloses ring-shaped, the axis of the ring is coincident with or parallel to the axis of the head; the radial ribs are distributed circumferentially on the transition part and are respectively vertically connected to the transition part; each of the radial ribs The plate extends along the arc length direction of the transition portion, and the two ends of the radial rib exceed the transition portion and are respectively connected with the straight cylinder portion and the spherical crown portion.

Preferably, the material of the head is carbon steel with a yield strength greater than 540MPa, and the thickness of the head is determined according to the following formula: ; where, is the minimum thickness of the head; R is the radius of the inner surface of the spherical cap; P is the design internal pressure of the head; R-_-e is the yield strength of the head material.

It can be seen from the above technical solution that the advantages and positive effects of the present invention are: in the tank container of the present invention, the tank body and the end frame are connected by a plurality of connecting pieces distributed in the circumferential direction, so that the end frame forms an effective support for the tank body . The connecting structure composed of multiple connecting parts is lighter than the connecting ring structure in the prior art. When the connecting parts are made of circular steel pipes, the weight can be about 5% lighter than the prior art, reducing the weight of the tank container and improving the storage and transportation capacity . At the same time, the load is transmitted through multiple connecting parts, the mechanical distribution is more reasonable, the force is uniform, and the structure is safe and reliable.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of a tank container of the present invention.

Fig. 2 is a left side view of Fig. 1 of the present invention.

Fig. 3 is a partially enlarged schematic diagram of the connection between the connector, the tank body and the end frame in the preferred embodiment of the tank container of the present invention.

Fig. 4 is a schematic diagram of the end face structure of the tank head in the preferred embodiment of the tank container of the present invention.

Reference signs are explained as follows: 1. Tank body; 11. Cylinder body; 12. Head; 121. Spherical crown; 122. Transition; 123. Straight cylinder; 13. Reinforcement; , radial rib; 1321, bevel; 2, end frame; 21, side beam; 22, diagonal brace; 3, connector; 4, backing plate.

detailed description

Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various changes in different embodiments without departing from the scope of the present invention, and that the description and illustrations therein are illustrative in nature and not limiting. this invention.

The invention provides a tank container, which is especially suitable for a gas tank container.

Referring to FIG. 1 , the tank container mainly includes a tank body 1 and two end frames 2 located at both ends of the tank body 1 to support the tank body 1 . Both ends of the tank body 1 are fixedly connected to one of the end frames 2 through a set of connection structures.

Each set of connecting structures includes a plurality of connecting pieces 3 distributed along the circumference of the tank body 1; the connecting pieces 3 are parallel to the central axis L of the tank body 1, and the two ends of the connecting pieces 3 are respectively connected to the end frame 2 and the tank body 1. Preferably, the connectors 3 are evenly distributed along the circumference of the tank body 1 .

As shown in FIG. 2 , in this embodiment, the connecting piece 3 is a circular steel pipe. In other embodiments, the connecting piece 3 can also be a rectangular steel pipe, or other shaped steel.

Still referring to FIG. 2 , the end frame 2 includes four side beams 21 located around and four braces 22 connected between two adjacent side beams 21 . The brace 22 of the end frame 2 is connected with the connecting piece 3 , so that the end frame 2 is fixedly connected with the tank body 1 . The diagonal brace 22 can be a square tube or a flat plate.

In this embodiment, a group of connecting structures includes eight connecting parts 3 , and each brace 22 of the end frame 2 is correspondingly connected to two connecting parts 3 .

Referring to FIG. 1 and FIG. 3 , the tank body 1 includes a cylinder body 11 and sealing heads 12 connected to both ends of the cylinder body 11 . The sealing head 12 is connected with the connecting piece 3 so that the tank body 1 is fixedly connected with the end frame 2 .

The head 12 is an internal pressure head that mainly bears internal pressure, and it includes a spherical crown portion 121, a straight cylinder portion 123, and an arc-shaped cylindrical transition portion 122 connected between the spherical crown portion 121 and the straight cylinder portion 123; the seal head 12 The straight cylindrical part 123 of the cylinder body 11 is docked. The transition portion 122 is connected to the connecting piece 3 .

Preferably, a backing plate 4 is provided at the end of the connecting piece 3 opposite to the head 12 , and the backing plate 4 is attached to the outer surface of the transition portion 122 .

Further, a reinforcing member 13 is provided inside the sealing head 12 corresponding to the transition portion 122 , so as to strengthen the transition portion 122 where the stress is relatively more concentrated, thereby ensuring the safety of the sealing head 12 .

Referring to FIG. 3 and FIG. 4 , in this embodiment, the reinforcing member 13 includes a hoop rib 131 and a radial rib 132 . In other embodiments, only the circumferential ribs 125 may be provided, or only the radial ribs 126 may be provided.

The radial ribs 132 are evenly distributed on the inner surface of the transition portion 122 in the circumferential direction, and are vertically connected to the transition portion 122 respectively. Each radial rib 132 is in the same plane as the axis L of the head 12 (that is, the central axis of the tank body 1 ). Figure 4 schematically shows eight radial ribs 132, the number of radial ribs 132 in the actual structure can be set according to the actual situation.

Each radial rib 132 extends along the arc length of the transition portion 122 , and both ends of the radial rib 132 extend beyond the transition portion 122 and are respectively connected to the straight cylinder portion 123 and the spherical crown portion 121 of the head 12 . Bevels 1321 are provided at both ends of the radial ribs 132 to reduce stress concentration through the transition, and the bevels 1321 can also be replaced by arc transitions.

Preferably, the arc length of the radial rib 132 beyond the transition portion 122 and joined with the spherical crown portion 121 is 100 mm˜400 mm. The length of the other end of the radial rib 132 beyond the transition portion 122 can roughly cover the length of the straight cylinder portion 123 .

In this embodiment, the circumferential ribs 131 are vertically connected to the inner surface of the transition portion 122 and connect the radial ribs 132 together. The circumferential rib 131 is connected to the middle of the arc length direction of the transition portion 122 . The hoop ribs 131 extend circumferentially along the transition portion 122, and may be an integral ring structure, or a plurality of arc-shaped hoop ribs 131 are arranged at intervals and enclose to form a ring, and the plurality of hoop ribs 131 Can be respectively connected between two radial ribs 132 . In this embodiment, the circumferential rib 131 is enclosed in a cone shape as a whole, and the axis of the circumferential rib 131 coincides with the axis L of the head 12; in some cases, the axis of the circumferential rib 131 can also be aligned with the axis L parallel. On the section of the head 12 (in the view direction shown in FIG. 3 ), the extension line of the ring to the rib 131 passes through the center of the arc of the transition portion 122 .

The transition part 122 of the head 12 under greater force is strengthened by the circumferential rib 131 and the radial rib 132 to improve the bearing capacity and reduce the thickness requirement of the transition part 122, thereby reducing the overall weight of the head 12. Thickness, reduce the self-weight of the head 12, and finally reduce the self-weight of the tank body 1.

The material of the head 12 is preferably carbon steel with a yield strength greater than 540MPa, and the thickness of the head 12 is determined according to the following formula: ; where, is the minimum thickness of the head 12; R is the radius of the inner surface of the spherical cap 121; P is the design internal pressure of the head 12; R-_-e is the yield strength of the material of the head 12.

According to this formula, the thickness of the head 12 is determined based on the allowable stress of the spherical cap 121 with a smaller force, and when the allowable stress is considered, it is determined based on the yield strength R-_-e and the corresponding safety factor of 1.5, Compared with the tensile strength and the corresponding safety factor of 2.4, it is more environmentally friendly and energy-saving, saving materials. Compared with the prior art, the thickness of the sealing head 12 can be reduced, and the transition part 122 is reinforced by the reinforcing member 13, so that the sealing head 12 can meet the use requirements.

The head 12 as a whole can be analyzed through the ultimate stress to investigate the bearing limit of the head 12 to ensure the safety of the structure of the head 12 .

In the tank container of the present invention, the tank body and the end frame are connected by a plurality of connecting pieces distributed in the circumferential direction, so that the end frame forms an effective support for the tank body. The connecting structure composed of multiple connecting parts is lighter than the connecting ring structure in the prior art. When the connecting parts are made of circular steel pipes, the weight can be about 5% lighter than the prior art, reducing the weight of the tank container and improving the storage and transportation capacity . At the same time, the load is transmitted through multiple connecting parts, the mechanical distribution is more reasonable, the force is uniform, and the structure is safe and reliable.

While this invention has been described with reference to several exemplary embodiments, it is understood that the terms which have been used are words of description and illustration, rather than of limitation. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be construed broadly within the spirit and scope of the appended claims. , all changes and modifications falling within the scope of the claims or their equivalents shall be covered by the appended claims.

Claims (12)

1. A tank container, comprising a tank body and two end frames positioned at both ends of the tank body, each of the two ends of the tank body is fixedly connected to one of the end frames through a group of connecting structures; it is characterized in that: Each set of connecting structures includes a plurality of connecting pieces distributed along the circumferential direction of the tank body; two ends of each connecting piece are respectively connected to the end frame and the tank body. 2. The tank container according to claim 1, wherein the end frame includes four side beams located around and diagonal braces connected between every two adjacent side beams; the diagonal braces and the Connectors are connected. 3 . The tank container according to claim 2 , wherein each of the diagonal braces is correspondingly connected to at least one of the connecting pieces. 4 . 4. The tank container according to claim 2, wherein the braces are square tubes or flat plates. 5. The tank container according to claim 1, wherein the connecting piece is parallel to the central axis of the tank body. 6. The tank container according to any one of claims 1-5, wherein the connecting pieces are evenly distributed along the circumference of the tank body. 7. The tank container according to claim 6, wherein the connecting piece is a steel pipe or a section steel. 8. The tank container according to any one of claims 1-5, wherein the tank body comprises a cylinder body and heads connected to both ends of the cylinder body; The sealing head includes a spherical crown, a straight cylinder and a transition portion connected between the spherical crown and the straight cylinder; the straight cylinder is docked with the cylinder; the transition is connected with the connecting piece. 9. The tank container according to claim 8, characterized in that, a backing plate is provided at the end of the connecting piece facing the head, and the backing plate is attached to the outer surface of the transition portion . 10 . The tank container according to claim 8 , characterized in that, a strengthening member is provided on the head corresponding to the transition portion. 11 . 11. The tank container according to claim 10, characterized in that, the reinforcing member comprises a hoop rib and/or a radial rib; The annular ribs are vertically connected to the transition portion, the annular ribs extend circumferentially along the transition portion, and are enclosed in a ring shape, the axis of the ring coincides with or is parallel to the axis of the head; The radial ribs are circumferentially distributed on the transition portion and are respectively vertically connected to the transition portion; each of the radial ribs extends along the arc length direction of the transition portion, and the radial ribs The two ends go beyond the transition portion and are respectively connected with the straight cylinder portion and the spherical cap portion. 12. The tank container according to claim 8, wherein the material of the head is carbon steel with a yield strength greater than 540 MPa, and the thickness of the head is determined according to the following formula: ; In the formula, is the minimum thickness of the head; R is the radius of the inner surface of the spherical cap; P is the design internal pressure of the head; R-_-e is the yield strength of the head material.