Integrated dry radioactive aerosol filtering device

A filtering device and radioactive technology, which is applied in the field of integrated dry-type radioactive aerosol filtering device, can solve the problems such as very large influence on filtration efficiency, and achieve the effects of avoiding low removal efficiency, reducing production cost, and evenly distributing flow

Active Publication Date: 2018-04-20
HARBIN ENG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, silver zeolite can be used to remove the radionuclide iodine-131 in the gas through chemical reaction, but due to its inherent hydrophilicity, its filtration efficiency is greatly affected by humidity

Method used

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  • Integrated dry radioactive aerosol filtering device

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Embodiment Construction

[0020] The present invention is described in more detail below in conjunction with accompanying drawing and specific embodiment:

[0021] combine figure 1 , an integrated dry-type radioactive aerosol filtering device provided by the present invention is mainly composed of a central chamber 1, a metal fiber filter 2, an interface section 3, an expansion section 4, a silver zeolite filter 5, a contraction section 6, and a bursting membrane 7 , outlet pipe 8, pressure housing 9, inlet 10, end chamber 11, condensate discharge pipe 12, heat exchange pipe 13, metal fiber filter lyophobic pipe 14, throttling and pressure-reducing orifice plate 15, flow equalization Orifice plate 16 forms.

[0022] The pressure housing 9 is initially filled with atmospheric nitrogen. The opening pressure of the outlet of outlet pipe 8 is controlled by burst disc 7 . Under the effect of pressure difference, the high temperature and high pressure mixed gas to be filtered initially enters the end cham...

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Abstract

The invention discloses an integrated dry radioactive aerosol filtering device which comprises a central cavity 1, a metal fiber filter 2, an interface section 3, an expansion section 4, a silver zeolite filter 5, a contraction section 6, a rupture disk 7, an outlet pipe 8, a pressure bearing shell 9, an inlet 10, an end cavity 11, a condensate discharging pipe 12, a heat exchange pipe 13, a metalfiber filter lyophobic pipe 14, a throttling depressurizing pore plate 15 and a flow equalizing pore plate. The metal fiber filter 2 completes dehumidifying and dedusting of filtered mixed gas, and the silver zeolite filter 5 removes radioactive iodine in the filtered mixed gas through chemical reaction. An integrated structure is adopted, running pressure is high, size of the silver zeolite filter 5 can be reduced effectively, and equipment production cost can be lowered. Due to passive design of the rupture disk 7, the device is simple in structure, safe in running and high in reliability.The device is simple in integral structure, small in size, high in economic efficiency and comparatively convenient to arrange, mount and maintain.

Description

technical field [0001] The invention belongs to the technical field of nuclear reactor safety, and in particular relates to an integrated dry radioactive aerosol filtering device. Background technique [0002] The containment of nuclear power plants is the last barrier to prevent the release of radioactive products into the environment, and its integrity plays an important role in environmental protection. The containment filtration and discharge system ensures the integrity of the containment by actively decompressing and discharging the pressure inside the containment to ensure the integrity of the containment. Filtration is performed to prevent radioactive substances from causing serious harm to the environment. Research on containment filtration and discharge devices started earlier in foreign countries, such as sand bed filtration and discharge systems, wet filters, etc. Research in this area started relatively late in our country, from the papers "Experimental Resear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/02B01D46/00B01D53/82
CPCB01D53/82G21F9/02B01D46/62
Inventor 曹夏昕倪嵩李娜孙中宁丁铭谷海峰周艳民孙悦朱睿
Owner HARBIN ENG UNIV
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