Uninterrupted temporary ventilation dust removal system during construction period of nuclear island containment plant

Abstract

The invention provides an uninterrupted temporary ventilation dust removal system during the construction period of a nuclear island containment plant. The uninterrupted temporary ventilation dust removal system comprises a blast pipe section module in the nuclear island containment plant and draught fan modules on the two sides of the nuclear island containment plant, wherein two ports of the blast pipe section module are connected with the air inlets of the draught fan modules on the two sides separately; the air outlets of the draught fan modules are connected with exhaust outlets; each ofthe draught fan modules comprises at least two first draught fans and at least one second draught fan; the first draught fans are connected in parallel and then are connected with the second draught fans in series; the inlets of the first draught fans are connected with the blast pipe section module; the outlets of the first draught fans are connected with the inlets of the second draught fans; and the outlets of the second draught fans are connected with the exhaust outlets. The uninterrupted temporary ventilation dust removal system is convenient to repair and maintain, easy to carry and mount, large in ventilation quantity and excellent in dust removal effect, has the characteristic of uninterrupted air exhaust for 24 hours and can sufficiently ensure cross ventilation of all areas anda room, so that the air quality in the nuclear island containment plant is improved, the noise in the containment is lowered and the working environment of constructors is improved.

Description

technical field [0001] The invention relates to the technical field of nuclear island containment construction, in particular to an uninterrupted temporary ventilation and dust removal system during the construction of a nuclear island containment plant, which is used to fully ensure fresh air convection in each area and room at the construction site, so that the nuclear island containment plant Improve air quality. Background technique [0002] At present, relying on the temporary ventilation and dust removal system used during the construction of the project's nuclear power site, it is composed of common ventilation equipment in the market, three-proof circular air ducts, and local metal air ducts, which cannot meet the 24-hour uninterrupted ventilation needs of the site. According to the construction characteristics of nuclear power plants, after the containment top of the nuclear island is in place, civil engineering and installation will be carried out in parallel. Duri...

AI Technical Summary

Problems solved by technology

[0003] The actual fan layout and ventilation on the construction site are as follows: 1. The layout of fans, air ducts, and power lines is messy, obstructing passages and construction work surfaces, and posing potential safety hazards; As a result, the fresh air volume in the nuclear island plant cannot meet the breathing needs of the workers, so when the workers can't bear it, they will run out of the small room to breathe; 3. After the construction site survey, although there are enough fans, the effect is still not good. Ideally, the nuclear island containment is filled with dust, which also has a great impact on the health of the construction workers who have been protected, and also has a very large impact on the civilized construction on site and the protection of finished products

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