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KR-102962573-B1 - Tank device for storing meteorological media

KR102962573B1KR 102962573 B1KR102962573 B1KR 102962573B1KR-102962573-B1

Abstract

The present invention relates to a tank device (1) for storing a gaseous medium, particularly hydrogen, having one or more tank containers (2), wherein one or more tank containers (2) comprise a tank housing (20) having a tank neck (3). Additionally, a connecting screw element (5) is arranged within the tank neck (3), and the connecting screw element (5) contacts a conical sealing sheet (10) formed on the inner side (8) of the tank housing (20), thereby sealing the tank neck internal space (30) of the tank neck (3), and the connecting screw element (5) may be subjected to initial stress by a union nut element (6) mounted on the outer side (9) of the tank housing (20).

Inventors

  • 쉴케 아르민
  • 크노일레 프리드리히

Assignees

  • 로베르트 보쉬 게엠베하

Dates

Publication Date
20260511
Application Date
20200625
Priority Date
20190717

Claims (11)

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  11. A method for inserting a connecting screw element (5) into the tank neck (3) of a tank container (2) of a tank device (1) for storing a gaseous medium, A tank device (1) for storing a meteorological medium is, One or more tank containers (2) are provided, and one or more tank containers (2) include a tank housing (20) having a tank neck (3). A connecting screw element (5) is arranged within the tank neck (3), and the connecting screw element (5) is a conical sealing sheet (10) formed on the inner side (8) of the tank housing (20), which contacts the sealing sheet (10) opposite the connecting screw element (5) in the longitudinal axis (12) direction of the tank container (2), thereby sealing the tank neck internal space (30) of the tank neck (3), and the connecting screw element (5) can be subjected to initial stress by a union nut element (6) mounted on the outer side (9) of the tank housing (20). The tank housing (20) is characterized by further including a tank neck (3) and a tank body (4) formed as a single member, and A method for inserting a connecting screw element (5) into the tank neck (3) by means of a flanging when the tank container (2) is already closed at the rear side, and a device is provided to bring the connecting screw element (5) into contact with a sealing sheet (10) through the tank neck (3) from the outside of the tank container (2).

Description

Tank device for storing meteorological media The present invention relates to a tank device for a fuel cell tank, in particular for storing hydrogen, for use in vehicles, for example, equipped with a fuel cell drive unit. DE 10 2017 212 485 A1 describes an apparatus for storing compressed fluid for a vehicle having a drive unit driven by gaseous fuel, and the apparatus comprises at least one high-pressure fuel distributor having at least integrated control- and safety technology and two or more tubular tank modules. The two or more tubular tank modules are modularly connected to at least one high-pressure fuel distributor having at least integrated control- and safety technology to form a module having a flexible geometry. Safety devices for such tank units are standardized. In this case, each tank unit must include, for example, a shut-off valve. As such, the shut-off valves can ensure that the tank vessels are closed by closing the shut-off valves in a non-current state in the event of damage to the tank unit caused by an accident involving a vehicle equipped with a fuel cell drive unit, or in the event of a line failure of the tank unit. In this way, gas leakage from the tank vessels can always be prevented in the event of an accident or fault. Depending on the vessel, legal requirements are established that these safety valves must be mounted directly on the tank vessel or even inside the tank vessel. Accordingly, safety valves are directly exposed to gaseous media and system pressures, for example, up to 1,000 bar. Such high operating forces on safety valves necessitate complex structural measures to prevent damage to the safety valves and subsequent failure. Additionally, safety valves must be protected from possible "rupture" during an accident. In contrast, the tank device according to the present invention having the features of claim 1 has the advantage that the sealing of the tank device is significantly improved through the assembly of additional components on the inner side of the tank device, and the safety valve device integrated into the tank device is protected from damage. To this end, a tank device for storing a gaseous medium, particularly hydrogen, comprises one or more tank vessels including a tank housing having a tank neck. Additionally, a connecting screw element is arranged within the tank neck, and this connecting screw element contacts a conical sealing sheet formed on the inner side of the tank housing, thereby sealing the internal space of the tank neck. The connecting screw element may be subjected to initial stress by a union nut element mounted on the outer side of the tank housing. In addition, the present invention includes a method for inserting a connecting screw element into the tank neck of a tank vessel of a tank device. The insertion of the connecting screw element is carried out into the tank neck by a flanging when the tank vessel is already closed at the rear side, and a device is provided that allows the connecting screw element to come into contact with a sealing sheet through the tank neck from the outside of the tank vessel. Through the connecting screw element within the tank neck of the tank vessel, an improved seal is achieved by reinforcing the sealing action with the pressure inside the tank vessel. Additionally, for example, "rupture" of a valve device can be prevented because such a valve device is arranged within the tank vessel and such a tank vessel can withstand the pressure ratio in the event of an accident. Furthermore, as such, the connecting screw thread formed within the tank housing, which is typically used within the tank neck, can be omitted, so that a notch that reduces strength does not exist within the tank housing. In a preferred first improved embodiment, the connecting screw element includes a central opening, and this opening is formed as a through bore. Preferably, a valve device is accommodated within the opening of the connecting screw element coaxially with respect to the longitudinal axis of the tank vessel and is rigidly connected to the connecting screw element by screw fastening. In this way, the valve device can be integrated into the tank vessel as a safety valve in a structurally simple manner, and the valve device is protected from damage caused by external influences, such as shock during operation. Furthermore, the flow of a gaseous medium from the tank vessel can be controlled in this simple manner. In a preferred improved embodiment, one or more tank vessels are configured for a differential pressure of 1 bar to 1000 bar with respect to atmospheric pressure. In this way, the use of the gaseous medium within the tank vessels can be optimized. In a further embodiment of the present invention, the tank neck is formed in a cylindrical shape and extends to a cylindrical tank body as a conical extension, and the diameter (d) of the tank neck is smaller than the diameter (D) of the tank body. Through this shape, a uniform pre