Pressure vessel

A pressure vessel, comprising:

• a vessel body having a rectangular parallelepiped shape and configured to contain high pressure gas;
• a dividing wall in the form of a plate and disposed in the vessel body;
• and
• a plurality of ribs disposed on an outer surface of the vessel body, wherein
• the vessel body includes
• a top wall having a rectangular shape,
• a bottom wall having a rectangular shape and facing the top wall, and
• a surrounding wall in the form of a rectangular tube and joining a peripheral edge of the top wall and a peripheral edge of the bottom wall,
• the dividing wall is disposed in the vessel body in such a way as to define a first chamber having a rectangular parallelepiped shape and a second chamber having a rectangular parallelepiped shape in cooperation with the vessel body,
• each of the plurality of ribs extends over an entire circumference of the vessel body and along a plane perpendicularly intersecting the dividing wall, and
• at least one of the plurality of ribs includes a rib body continuously extending in a circumferential direction of the vessel body, and a connection rib connected to the rib body and shaped in the form of a tube having a space which allows an internal space of the vessel body to communicate with an outside space of the vessel body.

A pressure vessel, comprising:

• a vessel body having a rectangular parallelepiped shape and adapted for containing high pressure gas;
• a dividing wall in the form of a plate and disposed in the vessel body;
• and
• a plurality of ribs disposed on an outer surface of the vessel body, wherein
• the vessel body includes
• a top wall having a rectangular shape,
• a bottom wall having a rectangular shape and facing the top wall, and
• a surrounding wall in the form of a rectangular tube and joining a peripheral edge of the top wall and a peripheral edge of the bottom wall,
• the dividing wall is disposed in the vessel body in such a way as to define a first chamber having a rectangular parallelepiped shape and a second chamber having a rectangular parallelepiped shape in cooperation with the vessel body,
• each of the plurality of ribs extends over an entire circumference of the vessel body and along a plane perpendicularly intersecting the dividing wall,
• the plurality of ribs include a plurality of primary ribs arranged at a regular interval in a direction parallel to the dividing wall,
• a ratio of the distance between adjacent primary ribs of the plurality of primary ribs to the height of the surrounding wall is from 0.27 to 1.16, and
• at least one of the plurality of ribs includes a rib body continuously extending in a circumferential direction of the vessel body, and a connection rib connected to the rib body and shaped in the form of a tube having a space which allows an internal space of the vessel body to communicate with an outside space of the vessel body.

A pressure vessel, comprising:

• a vessel body having a rectangular parallelepiped shape and adapted for containing high pressure gas;
• a dividing wall in the form of a plate and disposed in the vessel body;
• and
• a plurality of ribs disposed on an outer surface of the vessel body, wherein
• the vessel body includes
• a top wall having a rectangular shape,
• a bottom wall having a rectangular shape and facing the top wall, and
• a surrounding wall in the form of a rectangular tube and joining a peripheral edge of the top wall and a peripheral edge of the bottom wall,
• the dividing wall is disposed in the vessel body in such a way as to define a first chamber having a rectangular parallelepiped shape and a second chamber having a rectangular parallelepiped shape in cooperation with the vessel body,
• each of the plurality of ribs extends over an entire circumference of the vessel body and along a plane perpendicularly intersecting the dividing wall,
• the plurality of ribs include a plurality of primary ribs arranged at a regular interval in a direction parallel to the dividing wall,
• a ratio of the distance between adjacent primary ribs of the plurality of primary ribs to the height of the surrounding wall is from 0.27 to 1.16,
• the plurality of ribs includes the plurality of primary ribs and a plurality of secondary ribs, the primary ribs being disposed in a central region amongst the plurality of ribs, and
• an interval between adjacent primary ribs is smaller than an interval between one of the primary ribs and a secondary rib that is adjacent to the one of the primary ribs.

A pressure vessel, comprising:

• a vessel body having a rectangular parallelepiped shape and adapted for containing high pressure gas;
• a dividing wall in the form of a plate and disposed in the vessel body;
• and
• a plurality of ribs disposed on an outer surface of the vessel body, wherein
• the vessel body includes
• a top wall having a rectangular shape,
• a bottom wall having a rectangular shape and facing the top wall, and
• a surrounding wall in the form of a rectangular tube and joining a peripheral edge of the top wall and a peripheral edge of the bottom wall,
• the dividing wall is disposed in the vessel body in such a way as to define a first chamber having a rectangular parallelepiped shape and a second chamber having a rectangular parallelepiped shape in cooperation with the vessel body,
• each of the plurality of ribs extends over an entire circumference of the vessel body and along a plane perpendicularly intersecting the dividing wall,
• the plurality of ribs include a plurality of primary ribs arranged at a regular interval in a direction parallel to the dividing wall,
• a ratio of the distance between adjacent primary ribs of the plurality of primary ribs to the height of the surrounding wall is from 0.27 to 1.16,
• the plurality of ribs includes the plurality of primary ribs and a plurality of secondary ribs, and
• each secondary rib has a projection from the outer surface of the vessel body that is smaller than a projection from the outer surface of the vessel body of each primary rib.