DE2421681A1 - STEAM PLANT WITH DIRECT CONDENSATE RETURN - Google Patents

Description

Pierre, Eugene REGAMEY ₁ L ¹ ETRAT (Lnire), France

Steam system with direct return of the Hondenaate

The present invention relates to a steam plant with direct recycling of the honing seeds. The invention also relates to steam systems with direct return of the condensate, bsi where saturated steam coming from a generator is distributed to the various exchange areas via a pipeline network, and the condensates are returned to the generator via another pipeline network, which is different from the pipeline network mentioned above be. However beneficial these facilities may be,

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the fact that they contain various pipeline networks in some cases entails investments, and it leads beyond that to a KDmpliziBrthBit of the attachments and is the cause of both üJärma- as well as pressure lossa, iuaa to the IMachtBil des TJeuteffektea is.

The present invention has set itself the task of creating a system of the type mentioned at the beginning, which is simpler and inexpensively expensive and in which, above all, there is a considerable reduction in heat losses, that is to say in energy consumption.

The object of the invention is achieved in that the system contains a single line network coming from the generator, daa for «I alone at the same time to the βΐηβπ for the steam supply of the Auateuechfliehen and on the other hand for the drainage of the condensate serves to Bio returned to the generator.

In the case of the empty system, there is a supply of water to every surface through "ine ader several branch lines over the only one, o.g. LiI- ' tungsnatz, with each of the branch lines separately or simultaneously can serve to supply water to the respective exchange surface and to drain the condensate, with at least one of the supply lines being arranged in the lower part of the water exchange surface. flows out.

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The replacement of the two networks for the steam supply and for the Return of the condensates through a single network, since a * line is formed, -that simultaneously the steam and the condensates conveyed, of course, reduces the manufacturing costs, but it also facilitates the connection of the branch lines. To this

it
Purpose is / not necessary to provide bends for each branch line in order to bypass the upper line of one of the two networks, as is often the case with conventional systems. This also makes it possible to reduce the filling losses with regard to steam and condensation. In addition, the use of a single network makes it possible to reduce the noise losses due to convection and radiation.

Another significant advantage derives from that characteristic of this system The result of the arrangement is the permanent equalization of the pressures that develop in front of and behind each noise exchange surface. This pressure equalization favors the drainage of the condensate due to gravity, whereby all drain valves are omitted which, whatever their quality, always let a little steam escape. It follows from this that the thermal The efficiency of the system is improved.

Depending on the needs, there can be a single pipe network for steam and of the condensates in the same direction or in different Directions are flowed through.

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The circulation of the condensates in the opposite direction than that of the Steam makes it possible to 'simplify the network by reducing the length of the lines, but also to reduce the Umrme losses.

An exemplary embodiment of the system is shown in the schematic drawing. Show it:

Fig. 1 shows a system according to the invention, in which each replaceable has only a single feed line to the line network,

Fig. 2 shows a similar system, but in which each exchange surface has two branches and

Fig. 3 shows a similar system, in which, however, each exchange area has only a single branch, which connects aie with a TbII of the only network in which the condensate circulates in the opposite direction to that of the steam.

In the drawing, 1 is the generator or steam boiler and with

the Each / AuatauBflfichen designated.

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In Fig. 1 supplies a single line 3, diB from the generator comes, via branch lines to each of the building areas.

The branch lines k serve at the same time for the supply of steam and for the drainage of the condensates in the countercurrent. The directions of flow of the steam and the condensates bind in all figures by the arrow B 11 bzui. 12 shown:

- in line section I, the zuiachan dam generator and the first branch line ^ of Fig. 1, theoretically only the steam circulates,

- in section II the steam and the condensate of the roast exchange surface circulate at once,

- dBr steam also circulate in dBm section III and diB condensates by the first and second AuatauachflMchB come here

- and in the section IU Bine finds stoppage dea SteamBB and sin outflow dBr condensate flowing from come from the three exchange surfaces instead.

A pump 5 conveys the condensates and leads them back through a Line 5 directly in the generator 1 back.

In the return there is aich before dBr pump 5 av / tl. Am buffer container 7th

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The system also contains a supply system in a conventional manner. atellB β for ZueatzujasBer with binary pump 9, a UlaaaerbehSlter 13 and an air vent 14-

In the embodiment according to FIG. 2, each exchange surface 2 is supplied with steam from the single line 3 by its plurality of supply lines ^ a and kb , the number of which is shown in the example shown in the drawing, with at least one of the branch lines such as the Branch line ka, only for steam supply

The supply and at least one of the other branch lines, including the joint line kb, are used simultaneously for the steam supply and for the drainage of the honeycomb or, in the event that the system contains a regulating device for dBH outflow of the condensate, is used exclusively for the drainage of the hand water.

In another embodiment shown in FIG. 3, the condensing surface 2 is connected via a feed line kc to an inclined line 10, the upper end of which is blind and the lower end of which is connected to the line 3. In this case, the condensate flows through the line 1o in the direction of the arrows 11 from the steam coming from the line 3 and in the direction of the arrow B 12, fig. DBr Ueg of the Danpfea and the condensate in the line 3 iet on the same

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Ueiae dargeatellt by the arrows 11 and 12, which have the same directionalnn.

This type of branch line that is used for every surface area can be, in which the condensates generated inside the flee can flow at all points as a result of gravity, brings an advantageous shortening of the length of the lines with eich, alao also a reduction of the manufacturing costs, but you a reduction of the heat losses and they finally favor the thermal line yield.

Finally, in FIG. 3, each branch line kc is connected to the upper part of the heating surface 2 via an arch itc 'and to its lower part via an arch kc ⁿ '. In this case, the arc kc ^{% is} traversed exclusively by the steam, while the arc kc ^{n is} traversed by the condensates, possibly with the steam, but in the opposite direction.

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Claims (1)

1.) Steam system with direct return of the condensate, thereby characterized in that a single line network coming from the generator is used at the same time on the one hand to supply steam to the exchange flasks and on the other hand to drain the condensates in order to return them to the generator. 2. Steam system according to claim 1, characterized in that the Steam supply to each surface to be exposed through a single branch line The single line network takes place, with the branch line at the same time as the filling of the respective watering area with the Steam and for draining off dtr condensate is used and is located on the lower part of the Auitsuechfloche eats. 3. Steam system according to claim 1, characterized in that the Steam supply of every exchange through several branch lines takes place via the single line network, with each of the branch lines for the steam supply of the respective AuetauachflMch · and for Outflow of the moisture serves, with at least sine dsr supply Let the lower part of the exchange surface be arranged. 409848/0997 k. Steam plant according to Binem dar claims 1 to 3, characterized in that the only line network in the same direction beginning from. Steam and then the condanaate flows through it. 5. DampfanlagB according to one of claims 1 bia k, characterized in that at least Bin Tbü of the single network is flowed through in one direction by the steam and in the opposite direction van den Hondsnaaten. 6. Steam system according to claim 5, characterized in that the Part of the Netzea that runs in the opposite direction from the steam and from the The condensate flows through it and is formed by a line which blind at its upper end and blind at its lower end to the umbilical network connected iat. 409848/0997 iff Blank page