Method and apparatus for replacing a filter in a vessel
AssigneeCommissariat a l'Energie Atomique
InventorsJacques Lance, Georges Muller
Life of this patent
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Abstract
The present invention relates to a method and apparatus for replacing a filter placed in a vessel or casing. The filter is placed in a casing, one member of the latter surrounding the filter being slid in order to give access thereto from all sides. Once the new filter has been fitted, it is applied to a frame with the aid of bars having cams, which act on the filter by means of a fastening frame. Application to the filtration of gases containing radioactive dust.
Claims12
A method for replacing a filter placed in a vessel to filter a fluid circulating in said vessel, said vessel comprising:
- a hollow upstream part;
- a hollow downstream part separated from said upstream part by a space, said filter being positioned in said space and having a first face and an opposed second face;
- a hollow member movable between a closed position, in which it closes said space and surrounds said filter when fluid is circulating through all of said hollow members, and an open position allowing access to the filter from all sides thereof;
- and
- means for sealingly fixing said hollow member to said upstream part and said downstream part to contain said circulating fluid within said hollow members, said method comprising the following steps:
- (a) unfixing said hollow member from said upstream part and said downstream part,
- (b) moving said hollow member from its closed position to its open position,
- (c) removing said filter,
- (d) putting a new filter in place in said vessel,
- (e) moving said hollow member back from its open position to its closed position, and
- (f) fixing said hollow member to said upstream part and said downstream part.
An apparatus for replacing a filter placed in a vessel to filter a fluid circulating in said vessel, said vessel comprising:
- a hollow upstream part, and
- a hollow downstream part separated from said upstream part by a space, said filter being positioned in said space, and having a first face and an opposed second face,
- said apparatus comprising:
- a hollow member movable between a closed position, in which it closes said space and surrounds said filter, when fluid is circulating through all of said hollow members and an open position allowing access to the filter from all sides thereof;
- and
- means for sealingly fixing said hollow member to said upstream part and said downstream part to contain said circulating fluid within said hollow members.
Dependencies are inferred from the claim text.