Head Module, Large-scale Container and Method for Manufacturing the Both

A method for manufacturing a head module of a large-scale container, the head module including a head and a head cylindrical ring formed integrally with the head, the large-scale container including a cylindrical body and the head module, the method comprising the steps of:

• providing the head cylindrical ring, the head cylindrical ring being adapted to be connected with one end of the cylindrical body;
• making the end surface of one end of the head cylindrical ring be consistent with a theoretical intersection line of the head;
• and
• joining a plurality of petals, based on the end surface of the one end of the head, to form the head.

A method for manufacturing a large-scale container, the large-scale container including a cylindrical body and a first head module, the method comprising the steps of:

• providing a first head having an annular opening at a first site, the first head being composed of a plurality of first petals;
• providing a first head cylindrical ring to the annular opening of the first head at the first site to form the first head module;
• forming the cylindrical body at a second site different from the first site, based on the size of the first head cylindrical ring;
• and
• assembling the first head module and the cylindrical body, the first head module being located at one end of the cylindrical body in an axial direction of the cylindrical body,
• wherein the cross section of the first head cylindrical ring perpendicular to the axial direction is the same as the cross section of the one end of the cylindrical body perpendicular to the axial direction.

A head module for a large-scale container, the large-scale container including a cylindrical body and the head module, the head module being adapted to be connected with one end of the cylindrical body of the large-scale container, wherein the head module comprises:

• a head composed of a plurality of petals and having an annular opening;
• and
• a head cylindrical ring, one end of which is connected to the annular opening, and the other end of which is adapted to be connected with the one end of the cylindrical body;
• and
• wherein the head cylindrical ring comprises a plurality of cylinder plates, each cylinder plate being connected to the end surface of the annular opening of the head, and facing sides of all adjacent cylinder plates being joined.

A large-scale container, comprising:

• a first head module;
• and
• a cylindrical body, the first head module being connected to one end of the cylindrical body in an axial direction of the cylindrical body, wherein the first head module comprises:
• a first head composed of a plurality of petals and having an annular opening;
• and
• a first head cylindrical ring, one end of which is connected to the annular opening of the first head, and the other end of which is adapted to be connected with the one end of the cylindrical body;
• and
• wherein the first head cylindrical ring comprises a plurality of first cylinder plates, each first cylinder plate being connected to the end surface of the annular opening of the first head, and facing sides of all adjacent first cylinder plates being joined;
• and
• wherein the cross section of said the other end of the first head cylindrical ring perpendicular to the axial direction is the same as the cross section of the one end of the cylindrical body perpendicular to the axial direction.