FI83162B - KONDENSORKONSTRUKTION. - Google Patents

Description

83162 1 Condenser construction

Condenser construction 5

The invention relates to a condenser structure comprising a body, an end structure of U-shaped heat exchanger tubes arranged inside the body, at least one cooling medium inlet connection, at least one condensate outlet connection 10 and at least one cooling medium outlet connection.

Numerous distillation devices as defined above are known. In the distillation equipment currently on the market, the problems related to the energy economy have been solved and currently the focus is mainly on the quality of distilled water.

The quality of the distilled water is affected by the materials of the structures of the distillation equipment, the structural details of the distillation bed and, above all, the welding method used to obtain the structures.

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At present, in the quality of distilled water, special attention is paid to small "" even molecular - class impurities which, in currently known distillation apparatus solutions, can penetrate microscopic cracks in structures. Such microscopic slits are formed e.g.

25 when attaching heat exchange pipes to flanges. Particular mention may be made of organic bacteria, viruses, endotoxins and the like having a molecular weight of the order of 10,000 to 500,000. Such contaminants are extremely harmful and can completely destroy the quality of distilled water. This drawback has not been avoided by currently known solutions.

It is a general principle of operation in currently known distillation plants that pure steam and distillate are introduced into the condenser of the distillation stage down the inlet connection and the cooling water is passed to a heat exchange pipe where it flows downwards. Particularly sensitive places for the formation of microcracks are the joints where the heat exchange pipes are connected to the flange structures.

It is an object of the invention to provide an improvement over the condenser structures of a distillation apparatus known at present. It is a more detailed object of the invention to provide a condenser structure for a distillation apparatus in which harmful microcracks can be reliably avoided.

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To achieve the above object, the condenser structure according to the invention is mainly characterized in that the U-shaped heat exchange tubes inside the body of the condenser structure are attached to the flange by a sealing ring so that no harmful microcracks are formed.

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Preferred embodiments of the invention have the features of the subclaims.

Thanks to the invention, a very tight connection is obtained. The sealing ring used in the fastening-15 between the heat exchange tube and the hole in the flange is provided as is known per se by mangling or it can be an expandable compressible ring.

The invention will be explained in detail with reference to a preferred embodiment of the invention shown in the figures of the accompanying drawings, to which, however, the invention is not intended to be exclusively limited.

Figure 1 shows a preferred embodiment of a condenser structure according to the invention in a partially sectioned side view.

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Figure 2 shows a section along the line II-II in Figure 1.

Figure 3 is an end view of the condenser structure of Figure 1.

Figures 4a and 4b show the connection point between the prior art heat exchanger tube and the flange.

Figure 5 shows a connection point between a heat exchange pipe and a flange according to the invention.

In the embodiment according to Figures 1-3, the condenser structure according to the invention is generally indicated by reference numeral 10. The condenser structure 10 comprises a body 11 and an end structure 12. The cooling medium flows into the condenser structure 10 down to the compound 13. Numerous U-shaped heat exchange tubes 14 are arranged inside the body 11. In this embodiment, reference numeral 15 denotes the introduction of pure steam and the reference numeral 16 denotes the outlet of the distillate. A degassing connection 17 is arranged in the upper part of the body 11. Reference numeral 18 denotes the inlet pipes for liquid distillates. Reference numeral 19 denotes coolant outlet pipes.

Figures 4a and 4b are cross-sectional views of prior art connections between the heat exchanger tube 14 and the flange. These clearly show the detrimental microcrack, denoted by reference numeral 21, which causes impurities in the quality of the distilled water.

Fig. 5 shows a solution according to the invention, in which said harmful gap is sealed by a ring 22. The sealing is provided by mangering as is known per se, or the ring 22 is pressed tightly around the heat exchange tube 14 between it and the hole in the flange. The ring 22 in question may be, for example, Teflon or a material meeting similar properties 20.

The invention has been described above only on the basis of a special application of the principle solution according to the invention, and it will be clear to a person skilled in the art that the condenser structure according to the invention can be applied to numerous other practical embodiments. The following claims, within the scope of the inventive idea defined by which numerous modifications are possible.

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Claims (3)

4 83162 Ί Claims A method of attaching heat exchange tubes to a condenser structure (10) comprising a body (11), an end structure (12), heat exchange tubes (14) disposed within the body (11), at least one cooling medium inlet (13), at least one condensate outlet (16) and at least one cooling medium outlet connection (19), characterized in that the heat exchange tubes (14) inside the body (11) of the condenser structure (10), preferably U-shaped, are attached to the flange by manipulation or expansion, whereby the sealing ring (22) is pressed against the heat exchange tube around in such a way that no harmful microcracks are created. A condenser structure (10) provided by the method of claim 1, comprising a body (11), an end structure (12), U-shaped heat exchange tubes (14) disposed within the body (11), at least one cooling medium inlet (13), at least one condensate outlet (16) and at least one cooling medium outlet (19), characterized in that the heat exchange tubes (14) and the flange have a sealing ring (22) which compresses the heat exchange tubes so tightly that no harmful microcracks are formed. Condenser structure according to claim 2, characterized in that said ring (22) is e.g. Teflon. 25 30 35 5 83162