Pressure vessel

A pressure vessel (52) for storing a fluid in an interior (58) delimited by the pressure vessel (52), the pressure vessel (52) having a vessel opening (55) for conducting the fluid out of the interior (58) of the pressure vessel (52) and a connecting member (62) fixed in a fluid-tight manner to the pressure vessel (52), the connecting member (62) comprising

• a connecting element (63) with an opening (65) for conducting the fluid through the vessel opening (55) of the pressure vessel (52) and through the opening (65) of the connecting element (63),
• a mechanism (79) for form-fittingly and detachably fixing the connecting element (63) to the pressure vessel (52), so that the connecting element (63) bears against the pressure vessel (52) with a compressive force,
• wherein
• the mechanism (79) comprises a first tensioning lever (80) and a second tensioning lever (81), which are pivotably connected to one another by a connecting joint (83), so that in a fixing position of the first and second tensioning levers (80, 81) relative to one another, a compressive force is applied to the connecting element (63) by the mechanism (79) and the connecting element (63) bears against the pressure vessel (52) with the compressive force, and
• wherein
• the first tensioning lever (80) and the second tensioning lever (81) are pivotable relative to one another about a connecting pivot axis (89) by the connecting joint (83), and
• wherein
• the first tensioning lever (80) is pivotable about a first fixing pivot axis (90) relative to the connecting element (63) by a first fixing joint (84), and the second tensioning lever (81) is pivotable about a second fixing pivot axis (91) relative to the pressure vessel (52) by a second fixing joint (85).