Catalytic hydrogen sensor
A sensor and catalytic technology, applied in the field of flammable and explosive gas concentration measurement, can solve the problems of insecurity, small contact area, large energy consumption, etc., to avoid combustion and explosion, reduce reaction heat, and high safety Effect
Active Publication Date: 2013-03-13
中国船舶集团有限公司第七一八研究所
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Problems solved by technology
[0007] The disadvantage of this system is that the hydrogen sensitive probe coated with catalyst has a small contact area with hydrogen, resulting in low catalytic recombination efficiency. In order to maintain a high catalytic recombination efficiency, the catalytic electrode needs to be continuously heated by external power supply, which consumes a lot of energy. ; And when the hydrogen concentration is high, the power supply or heating process will form an ignition or explosion source of explosive gas, which is unstable and unsafe to use
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Embodiment 1
[0047] like figure 1 As shown, a catalytic hydrogen sensor, the sensor includes: a catalytic reactor 1, an explosion-proof device 2, a protective outer cylinder 3, a first thermal sensitive element 4, a first ferrule 5, a second ferrule 6, an upper flower Plate 7, positioning rod 8, installation rod 9, second thermal sensitive element 10, protective filter layer 11, supporting plate 12 and lower flower plate 13;
[0048] Among them, the catalytic reactor 1 is a cylindrical structure with one end open, and the open end has an external thread; the explosion-proof device 2 is a cylindrical structure with one end open, and the open end has an internal thread, and the inner diameter of the opening is the same as the outer diameter of the open end of the catalytic reactor 1. Matching, the inner diameter of the cylinder is greater than the outer diameter of the catalytic reactor 1; the protection and protection filter layer 11 is a cylindrical structure with an open end, the inner di...
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Abstract
The invention discloses a catalytic hydrogen sensor, belonging to the technical field of concentration measurement of flammable and explosive gas. The sensor comprises a catalytic reactor (1), a explosion protection device (2), a protective outer cylinder (3), a first heat-sensitive component (4), a first cutting sleeve (5), a second cutting sleeve (6), an upper pattern plate (7), a positioning rod (8), a mounting rod (9), a second heat-sensitive component (10), a protective filtering layer (11), a supporting plate (12) and a lower pattern plate (13). The sensor enables a catalytic combination reaction of the hydrogen and the oxygen under a normal temperature, without external power, thereby reducing energy consumption and being stabile and safe during a using process.
Description
technical field [0001] The invention relates to a catalytic hydrogen sensor, belonging to the technical field of concentration measurement of inflammable and explosive gases. Background technique [0002] A large amount of hydrogen will be produced under accident conditions in nuclear power plants. The source of hydrogen is: 1) In the early stage of the accident, zirconium-water reaction produces hydrogen at a high rate. 2) In the middle and late stages of the accident, the radiation decomposition of water, the reaction of core melt and concrete will also produce a large amount of hydrogen. The accumulation of a large amount of hydrogen may make the hydrogen concentration in the containment vessel exceed the explosion limit of 4%, and there is a danger of explosion. In order to avoid hydrogen deflagration accidents and destroy the integrity of the containment, it is necessary to build a hydrogen measurement system to monitor the hydrogen accumulation status at different pos...
Claims
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Login to View More IPC IPC(8): G01N25/22
Inventor 罗沙覃亮李琳
Owner 中国船舶集团有限公司第七一八研究所