Cap for a pressure tank, and pressure tank for a gas-powered vehicle
AssigneeVoith HySTech GmbH
InventorsHartmut Frenz, Lukas Wessels, Mark Bleischwitz, Thomas Lanzl
Life of this patent
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Abstract
A boss for a pressure tank for storing gas in a gas-powered vehicle. The boss is configured for attachment to a wall of the pressure tank enclosing a cavity for storing the gas. The wall has a reinforcement layer made of fiber-reinforced plastic and an inner liner for sealing. The boss has an external thread, which can be connected to a mating internal thread of the liner. There is also described a pressure tank with two such bosses.
Claims17
A boss for a pressure tank for storing gas in a gas-operated vehicle, wherein the pressure tank has a wall that encloses a cavity for storing the gas, and the wall includes a reinforcement layer composed of fiber-reinforced plastic and an inner liner for sealing the pressure tank;
- the boss comprising:
- an external thread for attachment to the wall of the pressure tank, said external thread being configured for meshing with a matching internal thread of the liner and to be arranged concentrically in relation to a longitudinal axis of the pressure tank;
- and
- an annular sealing surface situated on an end face of the boss, arranged perpendicularly to the longitudinal axis or enclosing an angle of between 70° and 110° with the longitudinal axis, said sealing surface configured for the liner to be pushed thereagainst by a spring element to form a throttle point and provide a sealing action;
- and
- a screw thread being an internal thread for receiving a sleeve to be screwed in, the sleeve serving to allow the liner to be pushed against the sealing surface of the boss with the aid of the spring element.
A pressure tank for storing gas in a gas-operated vehicle, the pressure tank comprising:
- a wall defining a circularly symmetrical elongate form which is cylindrical in a central region and is terminated at both ends by domed end caps;
- said wall enclosing a cavity for storing the gas, and said wall being formed of a reinforcement layer composed of fiber-reinforced plastic and an inner liner for sealing the cavity;
- each of said domed end caps having a metallic connection piece, being a boss;
- each boss including:
- an external thread for attachment to the wall of the pressure tank, said external thread being configured for meshing with a matching internal thread of said liner and to be arranged concentrically in relation to a longitudinal axis of the pressure tank;
- an annular sealing surface situated on an end face of the boss outside said liner and configured for said liner to be pushed thereagainst to form a throttle point and provide a sealing action;
- and
- a spring element associated with each boss, said liner being pushed against said sealing surface of a respective boss by an associated spring element.
Dependencies are inferred from the claim text.