DE1576880A1 - Forced steam generator heated by waste heat - Google Patents

Description

. n.

P. 4175

Gebrüder S u 1 2 e r Aktiengesellschaft, Vlntmrttn r / Switzerland Forced steam generator heated by waste heat The invention relates to a Zwanf- heated by AbMtM

1 «essential axljL running steam generator in a Rinpraua, which is located between a central displacement body and a wall surrounding it) reformed involute-like Pipe panels.

In the case of well-known steam producers of this type, the volvent-like pipe panels are constructed in such a way that the pipes are bent in a serpentine manner within the involute curve. This production of the pipe sheets is difficult because the pipes have to be curved in their longitudinal axis in order to give them the spherical shape. Because of the weak curvature of the volute curve, the pipes tend to spring back when they are shaped, so that large tolerances have to be worked with. Daa turn het result _t that the assembly of involute sheets of tubes in the steam generator housing is difficult.

In the steam generator according to the invention, these disadvantages are avoided in that the tubes in each panel are arranged parallel to the flow direction of the heating gas. By J ¹ "this arrangement, it is avoided to mtissen the tubes bend in their longitudinal axis"

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practicing to give the pipe panels the involute shape. This makes it easier the production of the drilling boards and at the same time brings a simplification la assembly with itself, as well as a same * · siger « Utilization of the cross-section through which heating pas flow.

The embodiment of the invention is available Drawing explained in the following description. Show Bs;

Fig. 1 is a vertical section through * a steam generator nac> - the invention,

PIf. 2 shows a cross section according to the line A-B in FIG Figure 1 and

3 shows a view of a pipe sheet in the developed state.

1, the Zwenp-1aufdampferzeuger designated as a whole by 1 consists essentially of a housing 2 of circular cylindrical cross-section, a central displacement body 2, also of cylindrical cross-section and heating surfaces 4, which are shown in FIG. 1 are indicated schematically by cross-hatching and which are arranged around the displacement body 3. The rock faces 4 are surrounded by a sheet metal jacket 5, which also has a circular cylindrical shape, so that an annular space is created between the jacket 5 and the displacement body 3, through which the hot gas entering below (arrow 6) flows in the axial direction. Since β heating gas has, for example, a temperature? ■ .. ■ 1000 ° C, as can occur in chemical processes _; and should be in

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the steam generator can be cooled as quickly as possible to 600 ° C, for example. The upper end of the housing 2 is closed by a cover 7 so that the heating gas reverses after flowing through the annular space occupied by the heating surfaces and in the opposite direction through the space between the jacket 5 and the housing 2 and then at the lower end of the steam generator this durc ^v leaves an outlet nozzle 6 (arrow 9). To regulate the temperature of the heating gas 3 openings 10 are provided in the displacement body, through which a part of the heating gas can flow into the displacement body and thereby the heating surface parts located behind the openings 10 in the direction of flow of the hot gas. The amount of hot gas flowing through the displacement body 3 via the openings 10 is adjusted by a flap 11 which is operated via a linkage in a manner not shown in detail.

As Fig. 2 shows, the heating surfaces 4 are formed from involute-shaped tube panels 15, which fill the annular space that it * is located between the displacement body 3 and the jacket 5 massively. Each tube panel 15 is made up of at least one serpentine curved red (PIF. 3), wherein 4ie HRIS straight extending ro ^ rabsc ^ nitte In 8trBaunfsric ^w tunf of the heating gas pass, so ac ^ slal By J ^u the annulus. Ueber die Hö ^ e of the tube panel are distributed between the Rahrabschnitten, short spacer 16 appropriate, eg in the form weisster eingesc ^K connecting webs. the tube panels are mutually by J *

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short spacers 17 connected to one another (Fir · 2). In the displacement of the involute tube panels, there are provided V «rdrlnjniiifek8rpar 18 having an approximately triangular cross-section, which extend in the axial direction over the entire length of the shell 5 and which fill the outside of each involute-like tube panel which is not can be occupied by a pipe. The inlet and outlet line 19 and 20, respectively, of each pipe panel is fed upwards through the cover 7 and connected there to old collectors in a manner not shown. Da-nit lines 19 nic ^N t enp su lie against each other, they will be alternately move radially against each other. If the vials 4 do not form an evaporator but, for example, overheat, it is advisable to alternate the supply and discharge lines of adjacent pipe panels so that in FIG t. As a result, the temperature of the heating fiber is compared across the cross-section of the Feizgasstroais.

The avolvent-like pipe panels can have a length of 10 m or more in the direction of flow and the gas. The new arrangement of the pipes in the involute bent pipe panels in the direction of the hot gas results in a simpler design and a uniform allocation of the same cross-sections to each pipe. The new shape of the pipe panel also supports this rapid cooling of the heating gas by flowing it over the heating surfaces at high speed.

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By loosening and removing the cover 7, for example for repair purposes the involute-like pipe panels from the Ausbatsen housing 2, it being possible for the jacket 5 to come along or remains in the position shown.

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Claims (7)

Claims Forced-action steamers heated by waste heat, essentially axially
an annulus, through which there is a flow of water, which is "wipe" a central displacement body and a wall, has involute-type camouflaged pipe panels, marked ^{by the} fact that the pipes in the table are parallel to the
Direction of flow of the heating gas are arranged. 2. Steam generator nac ^h to claim 1, characterized in that each diss the Drill a panel by NEN between i ^ Inappropriate spacers are mutually fixed. 3. Steam generator according to claim 1, characterized in that the pipe panels dissolve by spacers attached between them are fixed. 4. Steam generator according to claim 1, characterized in that OiSB alternate the connections of the pipe panels for the working medium inlet and outlet of adjacent pipe panels. 5. Steam generator according to Ar j claim 1, characterized in that that each tube sheet consists of at least one serpentine tube. 6. Steam generator according to claim 1, characterized in that then the wall delimiting the gray area is at a distance from OehMuse of the steam generator is so surrounded. that between the housing 009822/0036 157688Q and a space is created for the wall, which is peculiar to the hot surface Gas flows through in the opposite direction. 7. Steam generator according to claim 1, with a hollow VerdÄNrunrs body, characterized in that at least part of the hollow displacement body is used as a bypass line for the Heiapas is formed, the flow cross-section is changeable. 009822/0036 Blank page