Metal hydride hydrogen storage tank

Abstract

The invention discloses a metal hydride hydrogen storage tank, and belongs to the technical field of hydrogen storage. The metal hydride hydrogen storage tank is composed of a tank body, a hydrogen storage alloy, a supporting frame, a porous metal gas guide segregation board, a gas guide pipe, a sealing head, a filter and a valve. The supporting frame is used for supporting the porous metal gas guide segregation board, and the hydrogen storage alloy is divided into a plurality of layers through the supporting frame and the porous metal gas guide segregation board; meanwhile, the diameter of a center hole of the porous metal gas guide segregation board is the same as the outer diameter of the gas guide pipe, and it is guaranteed that hydrogen between the layers of the hydrogen storage alloy is smooth. The metal hydride hydrogen storage tank is simple in structure and easy to manufacture and machine; as the supporting frame and the porous metal gas guide segregation board are arranged, the hydrogen storage alloy can be effectively prevented from being gathered to the bottom of the hydrogen storage tank due to volume expansion / shrinkage in the repeated hydrogen sucking / releasing process, tank deformation and cracking, caused by gathering of the hydrogen storage alloy and too-large stress, of the hydrogen storage tank are avoided, the using safety of the hydrogen storage tank is improved, and the service life of the hydrogen storage tank is prolonged.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage, and in particular relates to a metal hydride hydrogen storage tank. Background technique [0002] With the development of society, fossil fuels such as coal, oil, and natural gas can no longer meet the growing needs of human beings. At the same time, the use of fossil fuels has caused the deterioration of the ecological environment, such as the greenhouse effect. In addition, coal, oil, natural gas, etc. are non-renewable resources with limited reserves on the earth, and it is impossible for human beings to depend on them all the time. As a clean and efficient secondary energy source, hydrogen energy is considered to be an ideal energy source to replace traditional fossil fuels. In the hydrogen energy system, the safe storage of hydrogen is the most critical link. [0003] Commonly used hydrogen storage technologies mainly include high-pressure gaseous hydrogen storage, low-temperature...

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Problems solved by technology

However, the hydrogen storage alloy powder will be pulverized due to volume expansion and contraction during the hydrogen absorption / desorption process, and the hydrogen storage alloy powder will gradually settle under the action of gravity

After multiple hydrogen absorption / desorption cycles, the hydrogen storage alloy will accumulate at the bottom of the hydrogen storage tank. When the accumulated hydrogen storage alloy absorbs hydrogen and expands, it will exert great stress on the tank body, which will cause plastic deformation or even rupture of the tank body, causing safety hazards. ACCIDENT

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