Method for the cleaning of heat exchange tubes and collecting device for the collection of deposits from heat exchange tubes
AssigneeSiemens Aktiengesellschaft
InventorsGeorg Krämer, Franz Ammann
Life of this patent
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Abstract
A method for the cleaning of heat exchange tubes and a collecting device for the collection of deposits from heat exchange tubes, include releasing deposits and collecting the deposits with a collecting vessel. The collecting vessel has an inlet orifice that completely encloses the underside of a tube plate in which exit-side tube ends are disposed. The collecting vessel has an inflatable hose for sealing off the collecting vessel. The collecting vessel is capable of being folded together, so that it can be introduced through a service orifice into the heat exchanger. The collecting vessel provides simple handling and positioning and serves, in particular, for use in a nuclear plant.
Claims43
In a method for cleaning heat exchange tubes led through a tube plate of a heat exchanger in a nuclear plant, the improvement which comprises:
- introducing a common collecting vessel through a service orifice into the heat exchanger and deploying the collecting vessel in the heat exchanger to a desired size and shape;
- mounting the common collecting vessel on the tube plate of the heat exchanger in the nuclear plant from below in the vicinity of the heat exchange tubes;
- releasing deposits in the heat exchange tubes and conveying the deposits to tube ends of the heat exchange tubes;
- and
- collecting the deposits from a plurality of the heat exchange tubes in the collecting vessel, without the collecting vessel changing position.
In a method for cleaning heat exchange tubes led through a tube plate of a heat exchanger in a nuclear plant, the improvement which comprises:
- mounting a common collecting vessel on the tube plate of the heat exchanger in the nuclear plant from below in the vicinity of the heat exchange tubes;
- at least partially adapting the inlet orifice of the collecting vessel to a predetermined geometry and sealing off the inlet orifice relative to the environment, by the inflation of a hose;
- releasing deposits in the heat exchange tubes and conveying the deposits to tube ends of the heat exchange tubes;
- and
- collecting the deposits from a plurality of the heat exchange tubes in the collecting vessel, without the collecting vessel changing position.
In a heat exchanger in a nuclear plant, the heat exchanger including a tube plate and heat exchange tubes led through the tube plate and having tube ends, a collecting device for collecting deposits from the heat exchange tubes, the collecting device comprising:
- a collecting vessel to be mounted below the tube plate of the heat exchanger in the nuclear plant, said collecting vessel having an inlet orifice enclosing a plurality of the tube ends;
- and
- said collecting vessel has an inflatable hose at least partially around said inlet orifice.
In a heat exchanger having heat exchange tubes, a collecting vessel for collecting deposits from the heat exchange tubes, the collecting vessel comprising:
- a conical and foldable structure having an inlet orifice, and an inflatable hose at said inlet orifice.
In a heat exchanger in a nuclear plant, the heat exchanger including a tube plate and heat exchange tubes led through the tube plate and having tube ends, a collecting device for collecting deposits from the heat exchange tubes, the collecting device comprising:
- a collecting vessel to be mounted below the tube plate of the heat exchanger in the nuclear plant, said collecting vessel having an inlet orifice enclosing a plurality of the tube ends;
- and
- said collecting vessel can be folded together.
In a heat exchanger in a nuclear plant, the heat exchanger including a tube plate and heat exchange tubes led through the tube plate and having tube ends, a collecting device for collecting deposits from the heat exchange tubes, the collecting device comprising:
- a collecting vessel to be mounted below the tube plate of the heat exchanger in the nuclear plant, said collecting vessel having an inlet orifice enclosing a plurality of the tube ends;
- and
- a shaking device connected to said collecting vessel.
Dependencies are inferred from the claim text.