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Exhaust pre-filter device changed outside hot cell

A technology of pre-filter and hot chamber, which is applied in the direction of dispersed particle filtration, chemical instruments and methods, and separation of dispersed particles. The effect of sealing performance

Active Publication Date: 2013-01-16
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the exhaust air pre-filter device for the hot cell was mainly installed and replaced in the hot cell by the hot cell manipulator or the hot cell crane. installation and replacement

Method used

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  • Exhaust pre-filter device changed outside hot cell
  • Exhaust pre-filter device changed outside hot cell
  • Exhaust pre-filter device changed outside hot cell

Examples

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Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The exhaust air pre-filter device replaced outside the heat chamber of the present invention is mainly divided into pre-filters (such as figure 1 shown) and filter replacement trolley 19 (such as Figure 5 As shown) two parts: the pre-filter is set in the hot chamber concrete wall 1 channel, the outer casing 8 is arranged in the hot room concrete wall 1 channel, and several filter elements 2 of the pre-filter are arranged in the outer casing 8 in turn, among which One filter element is set on the top of the hot chamber exhaust channel and is in working condition, and the others are used as backup; one side of the outer casing 8 is provided with a protective gate 5 for sealing the hot chamber concrete wall 1 channel, and the top of the protective gate 5 is provided with a lifting ring 1 4; the filter element replacement trolley...

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Abstract

The invention discloses an exhaust pre-filter device changed outside a hot cell, which comprises a pre-filter and a filter element changing trolley which are arranged in a hot cell concrete wall passageway; a plurality of filter elements of the pre-filter are sequentially arranged an outer sleeve in the hot cell concrete wall passageway, wherein one filter element is arranged above a hot cell exhaust channel; a protection shutter is arranged at one side of the outer sleeve; a protection cover is arranged above the filter element changing trolley and is internally provided with an inner sleeve adapting to the size of the outer sleeve; the inner sleeve is connected with a twist grip through a threaded bushing; and a hand wheel is arranged on a threaded push rod. When the filter element needs to be changed, the protection cover approaches the protection shutter to lift the protection shutter, the twist grip horizontally pushes the inner sleeve to be in contact with the outer sleeve, and then the hand wheel is rotated to push the threaded push rod to push the filter core arranged in the inner sleeve, so that the filter core is pushed to the outer sleeve to finish the change. According to the exhaust pre-filter device changed outside the hot cell, an operator can manually change the filter element outside the hot cell in a simple, convenient and safe way.

Description

technical field [0001] The invention relates to the design field of a hot chamber exhaust air pre-filter, in particular to a hot chamber exhaust air pre-filter device for replacing filter elements outside a hot chamber. Background technique [0002] The hot cell is a shielded and sealed containment device equipped with an operating system, so that the operator will not be exposed to radiation greater than the allowable dose rate when operating. The filtration and purification of the gas in the hot chamber is mainly done through the filter. The purification of the radioactive atmosphere in the hot cell is generally achieved by multi-stage filtration. In order to protect the high-efficiency filter and prolong its service life, it is necessary to install a first-stage exhaust pre-filter in the air outlet direction inside the hot cell. [0003] Due to the presence of gamma radiation and various radioactive particles such as alpha and beta in the hot chamber, it is required that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/00B01D46/42
Inventor 窦远宋文博沈琛林
Owner CHINA NUCLEAR POWER ENG CO LTD
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