Device and implementation method for multi-point rapid hydrogen measurement after nuclear power plant containment accident
A nuclear power plant containment and accident technology, applied in nuclear power generation, nuclear engineering, nuclear reactor monitoring and other directions, can solve the problems of long measurement period, inaccurate measurement results, poisoning damage of catalytic plates, etc. Responsive, centralized processing and quick disposal effects
Active Publication Date: 2017-11-21
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS +2
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Problems solved by technology
The hydrogen storage material measurement method uses the change of capacitance after the material absorbs hydrogen to indirectly calculate the hydrogen concentration in the shell, but because the hydrogen storage material is easily poisoned, it needs to be heated to remove hydrogen after a measurement, resulting in a long measurement period; the passive hydrogen recombiner measurement The method is to measure the hydrogen concentration in the shell by using the temperature rise of the catalytic plate under different hydrogen concentrations. Seriously inaccurate measurement results
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[0058] The present invention will be further described below with reference to the accompanying drawings and embodiments, and the mode of the present invention includes but not limited to the following embodiments.
[0059] like figure 1 As shown, the present invention provides a device for quickly measuring hydrogen at multiple points after a nuclear power plant containment accident, which includes a sample gas sampling probe 2, a sample gas transport pipe 5, a water vapor and hydrogen concentration measuring device, and a first buffer gas tank 11 and sample gas pressure recovery device.
[0060] The sample gas sampling probe 2 is used to extend into the containment of the nuclear power plant, and a filter, a hollow fiber membrane and a water vapor separator are arranged in sequence in it, and is used to sample the sample gas in the containment of the nuclear power plant and remove the Aerosols and liquid water (filters remove aerosols, hollow fiber membranes and moisture se...
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The invention discloses a device for rapidly measuring hydrogen at a plurality of points after a containment accident of a nuclear power plant. The device comprises a sample gas sampling probe, a water vapor and hydrogen concentration measuring device, a first buffering gas tank and a sample gas pressurizing and recycling device, wherein the sample gas sampling probe is used for sampling sample gas in a containment of the nuclear power plant and removing gas sol and liquid-state water in the sample gas; the water vapor and hydrogen concentration measuring device is used for measuring concentrations of water vapor and hydrogen in the sample gas respectively and removing the water vapor; the first buffering gas tank is used for temporarily storing the sample gas without the water vapor and stabilizing a gas flow; and the sample gas pressurizing and recycling device is used for pressurizing the sample gas in the first buffering gas tank and then conveying the sample gas back into the containment of the nuclear power plant. The device can be used for accurately and rapidly measuring the concentrations of the water vapor and the hydrogen in the containment of the nuclear power plant, and provides reliable guarantees for real-time monitoring of the hydrogen concentration in a severe environment under an emergency condition.
Description
technical field [0001] The invention relates to the field of security detection of nuclear power plants, in particular to a multi-point rapid hydrogen measurement device after a nuclear power plant containment accident and an implementation method thereof. Background technique [0002] After the Fukushima nuclear accident in Japan, the hydrogen risk control under the severe accident conditions of the containment of nuclear power plants has attracted great attention at home and abroad, and higher requirements have been put forward for the hydrogen safety devices of nuclear power plants. In the accident state of a nuclear power plant, a large amount of hydrogen will be produced due to the zirconium-water reaction in the early stage of the accident, the decomposition of water in the middle and late stages of the accident, and the reaction between the core melt and concrete. Detonation can seriously threaten the integrity of nuclear power plant safety barriers. Therefore, every...
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IPC IPC(8): G21C17/003
CPCG21C17/003Y02E30/30
Inventor 高博江婷陈治江郑振华赖新春张鹏程唐辉李嵘
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS