Device for the temperature pressure relief of a fuel tank

A technology of temperature, pressure and fuel tank, which is applied in the installation device of the container structure, the method of container discharge, the geometry/arrangement/size of the container structure, etc., can solve the problems of high cost of the vehicle, the inability to detect the combustion of the material box, etc., and achieve Effects of Safe Probing, Ensuring Design Flexibility, and Fast Response Features

Active Publication Date: 2021-03-16
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Such fuses generally imply high costs for the vehicle and may, for example, fail to detect a burn in the central area of ​​the tank

Method used

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  • Device for the temperature pressure relief of a fuel tank
  • Device for the temperature pressure relief of a fuel tank
  • Device for the temperature pressure relief of a fuel tank

Examples

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Embodiment Construction

[0039] Identical or similar components or elements are provided with the same reference symbols.

[0040] exist figure 1 A vehicle 2 is shown, which can be operated with a fuel cell system 4 . Hydrogen energy is supplied to one or more fuel cells 6 from a fuel tank 8 of the fuel cell system 4 , which is designed as a hydrogen storage tank. The fuel cell 6 generates energy, which can be used to drive the motor 12 by means of the power electronics 10 . The fuel tank 8 has a high-pressure supply line 14 and a discharge line 16 in which a pressure-controlled discharge valve 18 is arranged. In order to prevent the fuel tank 8 from bursting, for example in the event of a fire in the vicinity of the fuel tank 8 , a device 20 for temperature and pressure relief of the hydrogen storage tank 8 , shown schematically as a block, is provided.

[0041] In the device 20a-20d in the figure 2 In the first exemplary embodiment shown in side view (upper figure) and plan view from below (low...

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PUM

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Abstract

A device (20) for the temperature pressure relief of a fuel tank (8, 8a-8d) is described. The device (20) has a heat-conducting line (22, 22a-22d), which can be filled with a gaseous or liquid medium.A first end (24) of the line (22) can be connected to a pressure-controlled blow-off valve (18), which is arranged in a blow-off line (16) for blowing off fuel from the fuel tank (8, 8a-8d). The device (20) is designed in such a way that, if a pressure of the medium in the line (20) is greater than a pressure threshold value (P_2), the device (20) applies pressure to the blow-off valve (18) so that the blow-off valve (18) opens in order to discharge the fuel from the fuel tank (8, 8a-8d) into the blow-off line (16).

Description

Background technique [0001] It is known from practice to use hydrogen-based fuel cells or natural gas-based internal combustion engines in vehicles in order to reduce carbon-based emissions and at the same time reduce refueling times compared to battery-operated vehicles. However, the storage of hydrogen or natural gas ("Compressed Natural Gas" in English, CNG) in vehicles is a challenge due to the low density of the gas. Relevant fuel tanks for the gaseous storage of hydrogen fuel are, for example, generally made of metal and are under a pressure of between 350 bar and 700 bar. It is likewise possible to install several fuel tanks for hydrogen in a vehicle, for example a bus, in order to achieve a greater range of the vehicle. According to Article 134 of the United Nations standard UNECE R, each hydrogen fuel tank must have a fuse (English "thermally activated relief device", TPRD), and the fuse should prevent the fuel tank from bursting under high pressure or high temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C13/12
CPCF17C13/12F17C2201/054F17C2201/056F17C2205/0142F17C2205/0332F17C2221/012F17C2221/033F17C2223/0123F17C2260/021F17C2260/042F17C2270/0168F17C13/025
Inventor H·凯默K·韦贝尔
Owner ROBERT BOSCH GMBH
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