Self-checking common hydrogen-secondary hydrogen conversion device
A conversion device and self-checking technology, applied in measuring devices, hydrogen, instruments, etc., can solve the problems of complex equipment and cost, inability to detect purity at any time, difficult to measure ortho-parahydrogen molecules, etc., and achieve the effect of convenient operation.
Pending Publication Date: 2020-07-31
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
The traditional ortho-parahydrogen conversion technology needs to consume expensive liquid nitrogen or liquid helium as a cooling substance, and the conversion process cannot detect the purity at any time
The detection of hydrogen is also usually carried out by chromatographic analyzer, or Raman laser means as a detection tool, which requires complex equipment and cost
The thermal conductivity method is an effective method for gas analysis, but it is difficult for conventional gas analysis instruments to measure ortho-parahydrogen molecules that are sensitive to thermal conductivity at a temperature of 175K
Method used
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[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0034] The detailed structure of the cold pump catalyst is as follows: figure 2 As shown, the copper tube containing the catalyst is wound around the cold head of the cold pump, and the low-temperature working environment of the catalyst is realized by contacting the working cold head. The catalyst needs to be below 25K to effectively realize the catalytic function, where the cold head and pipeline are located in the vacuum environment of the cold pump. The catalyst in the pipeline is in an independent vacuum pipeline environment. Among them, the cold pump is Austin Scientific model M600, and the catalyst is Fe 3 o 4 , and its size is about 1mm powder.
[0035] The design of the test device for hydrogen gas is as follows: image 3 As shown, the principle of temperature measurement is that at low temperature (100 ~ 200K), the thermal cond...
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The invention relates to a complete mechanical device, which is used for converting common hydrogen at a normal temperature into secondary hydrogen and is provided with an inspection system. The device comprises a vacuum gas path system, a catalytic conversion device, a purity inspection device and a gas storage cylinder, wherein the vacuum gas path system consists of a mechanical pump, a gas pathand a plurality of valves, and hydrogen enters the vacuum gas path and is prevented from being polluted by air in the vacuum gas path by controlling the valves. The catalytic conversion device is composed of a cold pump and a catalyst, common hydrogen generates secondary hydrogen through a low-temperature catalyst, and the flow rate is controlled by a flow meter to guarantee the catalytic efficiency. The purity inspection device is used for measuring the gas purity by adding liquid nitrogen and using a thermal conductivity method. The prepared pure secondary hydrogen gas is stored in an aluminum gas cylinder to prolong the service life. The device can quantitatively convert common hydrogen into secondary hydrogen, and is an common hydrogen-secondary hydrogen conversion device with integrated conversion and purity inspection functions.
Description
technical field [0001] The invention relates to a self-checking hydrogen secondary conversion device. Background technique [0002] Hydrogen is an extremely flammable, colorless, transparent, odorless and tasteless gas. Hydrogen has important applications in many industries such as hydrogen biological effects, industry, medicine, and fuel applications. Hydrogen has three states of solid, liquid and gas, among which liquid hydrogen has the advantages of easy storage and large gasification expansion ratio, and is one of the important ways of hydrogen energy storage. Liquid hydrogen can usually be used as a propellant for launch vehicles. In recent years, it has also been applied to superconducting magnetic energy storage technology. [0003] Hydrogen molecules have two forms: orthohydrogen and parahydrogen. Two hydrogen atoms with the same spin direction are called orthohydrogen, and two hydrogen atoms with opposite spin directions are called parahydrogen. The parahydrogen-...
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IPC IPC(8): C01B3/00G01N27/18
CPCC01B3/00G01N27/185Y02E60/32Y02A50/20
Inventor 黄龙谢雨润王玉奉周德超肖春雷杨学明
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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