A hydrogen sensor with an alloy protective structure
A protective structure and sensor technology, which is applied in the field of hydrogen sensors, can solve the problems of reduced starting speed of hydrogen sensors, failure of hydrogen sensors, poisoning of hydrogen sensitive materials, etc.
Active Publication Date: 2021-07-06
718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology
However, during the construction or overhaul of a nuclear power plant, toxic atmosphere or dust can adhere to the surface of the protective filter device, and in extreme cases, it can enter the core components of the hydrogen sensor and poison the hydrogen sensitive material, resulting in a reduction in the start-up speed of the hydrogen sensor or even failure of the hydrogen sensor
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Embodiment 1
[0068] A hydrogen sensor with an alloy shielding structure such as figure 1 As shown, the hydrogen sensor includes a catalytic reactor 1, a protective filter device 2, a reaction temperature sensitive element 3, an ambient temperature sensitive element 4, a positioning rod 5, a mounting rod 6, a supporting plate 7, a protective outer cylinder 8, and an upper flower plate 9. Lower flower plate 10, upper flower plate protective structure 11, lower flower plate protective structure 12, calibration air inlet seal 13 and calibration air outlet seal 14.
[0069] Wherein, the catalytic reactor 1 is a cylindrical structure with one end open, and the open end has an external thread. The outer diameter of the catalytic reactor 1 is 10 mm, the thickness is 0.5 mm, and the height is 40 mm; the inner diameter of the opening of the catalytic reactor 1 is 1 mm. Catalyst is installed in catalytic reactor 1, and described catalyst is the catalyst that can make hydrogen and oxygen react at nor...
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Abstract
The invention relates to a hydrogen sensor with an alloy protective structure, belonging to the technical field of gas concentration measurement. The hydrogen sensor includes a catalytic reactor, a protective filter device, a reaction temperature sensitive element, an ambient temperature sensitive element, a positioning rod, a mounting rod, a supporting plate, a protective outer cylinder, an upper flower plate, and a lower flower plate; it also includes an upper flower plate Protective structure, lower flower plate protective structure, calibration gas inlet seal and calibration gas outlet seal. The surface of the upper and lower flower plates in the hydrogen sensor is provided with an alloy film material with a melting point of 70-120°C as the protective structure of the upper and lower flower plates, which can quickly sense the environmental temperature change after the accident and melt quickly, exposing the upper and lower The through holes on the surface of the flower plate form a natural diffusion environment inside the hydrogen sensor and protect the hydrogen sensitive components from the influence of changes in the gas flow field.
Description
technical field [0001] The invention relates to a hydrogen sensor with an alloy protective structure. The hydrogen sensor is mainly used for measuring the hydrogen concentration in the containment after a serious accident of a nuclear power plant, and belongs to the technical field of gas concentration measurement. Background technique [0002] When a dehydration accident occurs in a nuclear power plant, the fuel rod zirconium alloy cladding reacts with water under high temperature conditions to generate a large amount of hydrogen, which leads to an increase in the concentration of hydrogen in the containment. The average concentration of hydrogen in the limited containment space can reach the explosion limit, which seriously threatens safety. Structural integrity of the shell. Therefore, it is necessary to set up reliable hydrogen monitoring equipment to evaluate the accident status and provide decision-making basis for accident management. [0003] At present, the hydroge...
Claims
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Login to View More IPC IPC(8): G01N33/00
Inventor 罗沙任明军覃亮赵罗生
Owner 718TH RES INST OF CHINA SHIPBUILDING INDAL CORP