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Hydrogen replacement system

A technology for hydrogen and gas cylinders, applied in pipeline systems, measuring devices, fixed-capacity gas storage tanks, etc., can solve problems such as strong hydrogen leakage, short implementation period, and gas cylinder detection methods that cannot meet the detection requirements of hydrogen storage cylinders. Energy Saving Effect

Pending Publication Date: 2021-03-30
GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the implementation period of the above group standard is relatively short, and because hydrogen is flammable, explosive, strong leakage, and easy to cause "hydrogen embrittlement" of hydrogen storage materials, the traditional gas cylinder detection method cannot meet the detection of hydrogen storage cylinders, so for the above The relevant inspection and testing of the group mark belongs to the blank field

Method used

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Examples

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Embodiment 1

[0030] Such as figure 1 As shown, a hydrogen replacement system includes: a gas storage unit 10, storing nitrogen used to replace hydrogen in a gas cylinder 50; an inflation pipeline 20, used to connect the gas storage unit 10 and the gas cylinder 50, and the inflation tube A charging valve 21 is provided on the road 20; a hydrogen recovery unit 30 is used to recover the hydrogen in the gas cylinder 50; an exhaust pipeline 40 includes a first exhaust branch and a second exhaust branch; One end of the gas branch is connected to the gas cylinder 50, and a first valve 41 is provided on the first exhaust branch; the second exhaust branch connects the hydrogen recovery unit 30 and the gas cylinder 50, and the first exhaust branch A second valve 42 is provided on the second exhaust branch.

[0031] The hydrogen replacement system of this embodiment solves the current gap in the detection of the vehicle-mounted compressed hydrogen cylinder 50 in the laboratory. It can also be recyc...

Embodiment 2

[0059] like figure 2 As shown, this embodiment is similar to the above embodiment in structure and working principle, the difference is that the exhaust main pipe 43 in this embodiment is also provided with a flame arresting device 48, which further improves the safety performance of the hydrogen replacement system in this embodiment , to avoid pipeline fire and explosion.

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Abstract

The invention discloses a hydrogen replacement system. The hydrogen replacement system comprises a gas storage unit, an inflation pipe, a hydrogen recovery unit and an exhaust pipeline, wherein the gas storage unit is used for storing nitrogen for replacing hydrogen in a gas cylinder; the inflation pipeline is used for connecting the gas storage unit with the gas cylinder, and an inflation valve is arranged on the inflation pipeline; the hydrogen recovery unit is used for recovering hydrogen in the gas cylinder; the exhaust pipeline comprises a first exhaust branch and a second exhaust branch;one end of the first exhaust branch is connected with the gas cylinder, and a first valve is arranged on the first exhaust branch; and the second exhaust branch is connected with the hydrogen recovery unit and the gas cylinder, and a second valve is arranged on the second exhaust branch. According to the hydrogen replacement system, the blank of detection of a vehicle-mounted compressed hydrogencylinder in a laboratory at present is filled, and related detection of the hydrogen cylinder can be carried out after hydrogen is safely and efficiently exhausted; and meanwhile, the hydrogen originally stored in the hydrogen cylinder can be recycled, and energy is saved.

Description

technical field [0001] The invention relates to the field of pressure vessel detection, in particular to a hydrogen replacement system. Background technique [0002] Hydrogen is a flammable and explosive gas, which can be combustible in the range of 4% to 75% concentration by volume. Hydrogen gas is easy to diffuse, and due to its high buoyancy, it will diffuse rapidly when a leak occurs. Even in a poorly ventilated environment, leaked hydrogen will rise quickly. [0003] Domestic vehicle-mounted hydrogen storage cylinders have two specifications: 35MPa and 70MPa. The group standard "Periodic Inspection and Evaluation of Carbon Fiber Fully Wound Gas Cylinders with Compressed Hydrogen Aluminum Liner for Vehicles" (T / GDASE 0017-2020) mentioned that in the regular inspection of carbon fiber fully wound gas cylinders with compressed hydrogen aluminum liners for vehicles, it is necessary to ensure that Under the conditions of safety, sanitation and non-polluting environment, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C5/00F17C7/00F17C13/00F17C13/02F17C13/04F17C13/12F17D1/065F17D3/01F17D5/00G01L11/00G01M3/04G01N33/00
CPCF17C5/00F17C7/00F17C13/00F17C13/025F17C13/04F17C13/123F17D1/065F17D3/01F17D5/005G01N33/0063G01L11/00G01M3/04F17C2205/0302F17C2221/012F17C2227/0135F17C2227/04F17C2250/036F17C2250/043F17C2250/0626F17C2250/077F17C2260/042F17C2260/035F17C2260/046F17C2270/0745Y02E60/34Y02E60/32
Inventor 杨波李悦周杨飞李茂东王志刚翟伟伍振凌
Owner GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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