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Overpressure protection device and connection subassembly comprising same

A protection device, overpressure technology, applied in the direction of valve device, transportation and packaging, engine components, etc., can solve the problems of bulky, large system, limited response to overpressure defense, etc.

Active Publication Date: 2008-03-19
STAUBLI FAVERGES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these systems, two separate devices act on the first and second shutters to move them towards their respective closed positions, which limits the responsiveness of the system against overpressure
In addition, such systems are large and bulky, which constitutes a disadvantage when the equipment requiring overvoltage protection protection forms part of a packaged portable equipment

Method used

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  • Overpressure protection device and connection subassembly comprising same
  • Overpressure protection device and connection subassembly comprising same
  • Overpressure protection device and connection subassembly comprising same

Examples

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Embodiment Construction

[0026] Figure 1 shows a self-contained portable device for supplying electric current through hydrogen and oxygen. The consumed hydrogen comes from a storage tank 1 where the hydrogen is stored at a very high pressure, for example of the order of 700 bar.

[0027] In addition to the tank 1 , the device shown in FIG. 1 comprises a fuel cell 2 operating in a known manner, and a subassembly 3 connecting the fuel cell 2 to the tank 1 . The subassembly 3 comprises two expanders 4 and 5 connected in series and also a protection device 6 for protecting the cell 2 in case of overpressure downstream of the expanders. By way of example, such an overpressure may result from a failure of one of the expanders 4 and 5 , which functions to deliver a certain pressure of hydrogen, for example of the order of 4 bar. The device 6 is thus installed downstream of the expanders 4 and 5 , the device 6 being connected to the expanders 4 and 5 by the pipe 7 of the subassembly 3 .

[0028] The sub-as...

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PUM

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Abstract

The invention relates to a protection device which defines a through hole (21) for the passage of a fluid which may be under overpressure conditions. In addition, the inventive device comprises: a stop plug (26) which can move between an open position and a position in which a first section of the hole (21) is sealed; a stop valve (28) which can move between an open position and a position in which a second section of the hole (21) is sealed; and means (22, 23, 27) for triggering both the movement of the stop plug (26) and the movement of the valve (28) from the open position to the sealing position in response to an overpressure (P2) in the hole (21). The invention is particularly suitable for self-contained equipment used to supply electrical power by means of a fuel cell.

Description

technical field [0001] The invention relates to a protection device for protecting equipment against overpressure in a fluid supplying the equipment. The invention also relates to a subassembly forming part of a self-contained plant for supplying electricity, comprising said protection device and capable of coupling a tank for storing pressurized hydrogen to a fuel cell. Background technique [0002] Fuel cells that generate electricity from hydrogen and oxygen can obtain oxygen, for example, from atmospheric air. The hydrogen supplied to the fuel cell must come from a source or from a storage tank from which the hydrogen is transported through delivery pipes. If an overpressure occurs in the hydrogen in the delivery line, there is a risk of damage to the fuel cell unless an overvoltage protection device is provided upstream of the cell. [0003] US Patent Nos. 3,424,194 and 3,228,417 disclose associating a pressure regulator with a protective device to provide protection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D16/10F16K17/04
CPCF16K17/0406F16K17/048G05D16/103Y10T137/7728Y10T137/7727Y10T137/773
Inventor 阿兰-克里斯托夫·蒂贝尔吉安安德烈·查尔斯·帕万
Owner STAUBLI FAVERGES SA