EP2345841B1 - Heating area assembly of a steam generator or a heat exchanger - Google Patents

Description

The invention relates to a heating surface arrangement of a steam generator or a heat exchanger, with a plurality of heating surfaces and / or a plurality of Heizflächenpaketen, which are formed of a plurality of substantially parallel Heizflächenrohren having horizontally formed regions and between two horizontally formed regions each having a deflection region, wherein in the horizontally formed areas the Heizflächenrohre are bundled arranged to Heizflächendurchgängen, wherein two contiguous arranged Heizflächendurchgänge each form a Heizflächenennadel.

Furthermore, the invention is directed to a steam generator and / or heat exchanger comprising a heating surface arrangement.

Steam generators of power plants, heating plants, fluidized bed plants and / or waste incineration plants, which are fired with coal dust, gas or oil and other fuels, have in a steam generator or heat exchanger u. a. above a combustion chamber or downstream of tube bundles formed heating surfaces, which are flowed through by media such as water or steam, to absorb the heat of burned in the combustion chamber of the steam generator fuel and transported away.

The designed as Konvektionsheizflächen heating surfaces of a Heizflächenanordnung consist usually of several differently shaped bundle heating, their circuit and arrangement according to the process requirements from the medium circuit, in particular a Steam cycle, results. Depending on the height of a heating surface and the maximum height of a Heizflächenpaketes single or more Heizflächurchgänge a heating surface are usually combined to form a Heizflächenpaket, the mutually parallel Heizflächenrohre have horizontally formed areas and adjoining deflection areas to achieve a serpentine arrangement of Heizflächenrohre, wherein in the horizontally formed areas, the Heizflächenrohre are arranged bundled to Heizflächurchgängen, wherein two superposed Heizflächurchgänge form a Heizflächenennadel. The Heizflächenrohre a Heizflächendurchganges are arranged in alignment. The maximum height of a heating surface package is determined by the best possible cleaning of the heating surface arrangement by sootblowers, good accessibility of Heizflächenrohre in case of damage and the simplest possible visual control of the Heizflächenanordnung when driving.

The optimum heating surface package height is the essential criterion that results in the number of required lanes between the Heizflächenpaketen throughout the bundle region of a Heizflächenanordnung. If the possible Heizflächenpakethöhe not optimally utilized, so usually increases the number of lanes between Heizflächenpaketen and when equipping the streets with sootblowers and the number of sootblowers. The height of the steam generator or heat exchanger grows according to the resulting additional lanes. Both a greater height of the steam generator or heat exchanger and an increase in Rußbläserzahl are at considerable additional cost for the Steam generator or the heat exchanger connected. On the other hand, if the possible heating surface package height is exceeded, for example, the sootblowing effect is reduced, as a result of which the valency of a heating surface arrangement is reduced.

Conventional heating surface arrangements usually have a Heizflächenpakethöhe, which is formed from n Heizflächurchgängen, wherein the Heizflächenpakethöhehe by the required number of inner longitudinal divisions between the Heizflächurchgängen substantially from the height of a Heizflächurchganges and / or the number of Heizflächennadeln in a Heizflächenpaket and / or the height of the inner longitudinal division of a Heizflächenennadel is dependent. The situation often occurs that the possible Heizflächenpakethöhe not exploited or exceeded, resulting in the disadvantages listed above.

A generic Heizflächenanordnung, which has a plurality of Heizflächurchgänge with a plurality of mutually bundled Heizflächenrohren is from the GB 347 547 A known. Between two Heizflächendurchgängen a deflection is formed in each case. In the heating surface passage of a heating surface, the three lower heating surface tubes are arranged at a greater distance from one another than the remaining heating surface tubes arranged in the heating surface passage of this one heating surface. The Heizflächenrohre are arranged crosswise in the deflection.

The invention is therefore based on the object to provide a Heizflächenanordnung a steam generator or a heat exchanger available, by means of which an improved utilization of the possible Heizflächenpakethöhe allows and at the same time the height of a steam generator or the height of the heat exchanger can be reduced.

In a Heizflächenanordnung of the type described in more detail, this object is achieved in that a Heizflächendurchgang is fanned out, wherein n Heizflächenrohre this fanned Heizflächendurchganges located above the fanned Heizflächendurchgangs first heating surface of the plurality of heating surfaces or a first Heizflächenennadel the more Heizflächennadeln and m Heizflächenrohre the the same Heizflächendurchganges a located below the fanned Heizflächendurchgangs second heating surface of the plurality of heating surfaces or a second Heizflächenennadel the plurality Heizflächenennadeln are assigned, and / or that at least the two in a deflection inside lying on both sides offset from each other and / or at least the two in a deflection inside Heizflächenrohre are arranged on one side offset from one another, wherein each in the deflection outside Hei zflächenrohre are arranged one above the other in a row and at least one in the deflection outside lying Heizflächenrohr the mutually offset from each other arranged inside Heizflächenrohre or unilaterally offset from each other arranged inner Heizflächenrohre surrounds.

Likewise, the above object is achieved by a steam generator and / or heat exchanger comprising a heating surface arrangement according to any one of claims 1-7, as defined above and further developed.

Due to the fanned out formation of a Heizflächendurchganges a Heizflächenanordnung and / or the laterally offset arrangement of at least two lying in a deflection inside Heizflächenrohre it is possible to optimally utilize an available Heizflächenpakethöhe while minimizing the necessary height of the steam generator and the heat exchanger ,

In the fanned-out formation of a Heizflächendurchganges n Heizflächenrohre the Heizflächendurchganges a arranged above the fanned Heizflächendurchganges first heating surface or first Heizflächenennadel and m Heizflächenrohre the Heizflächendurchganges a arranged below the fanned Heizflächendurchganges second heating surface or second Heizflächenennadel be assigned to the fanned Heizflächendurchgang preferably in the whole of m + n Heizflächenrohren exists. By means of the fanning out of a heating surface passage of the heating surface arrangement, any heating surface package height can be realized, the number of lanes between the heating surface passages of the heating surface arrangement can be minimized and thus the overall height of the steam generator or heat exchanger can be reduced. The optimum Heizflächenpakethöhe may be, for example, from the height of one or more Heizflächenennadeln plus the height of n Heizflächenrohre or the height of the m Heizflächenrohre the fanned Heizflächendurchganges, in this embodiment, a heating surface and / or Heizflächenpaket by a Heizflächenennadel and n Heizflächenrohre or m Heizflächenrohre the fanned Heizflächendurchganges is formed. The expressions "n" and "m" preferably stand for any integer numbers ≥ 1, where "n" and "m" do not have to stand for the same number, but can also indicate a different number.

An optimal utilization of the possible Heizflächenpakethöhe and a simultaneous reduction in the height of the steam generator or heat exchanger is alternatively or simultaneously by a laterally, in particular on both sides, offset from each other arrangement of at least the two innermost Heizflächenrohre in the deflection possible, preferably the vertical distance of Heizflächenrohre the inner deflection of a Heizflächenennadel is reduced by a longitudinal pitch. The inner two Heizflächenrohre a Heizflächenennadel are in the deflection of Heizflächenennadel mutually offset from each other, with the mutually offset mutually offset Heizflächenrohre cross over preferably in the deflection. By a two-sided staggered arrangement of the two innermost Heizflächenrohre in the deflection is a more compact design of Heizflächenennadel, in particular with respect to their height, possible, whereby the Heizflächenpakethöhe and thus the height of the steam generator or heat exchanger can be reduced. Furthermore, it is also possible to arrange a plurality of internal Heizflächenrohre unilaterally offset. The outermost Heizflächenrohr or even more outer Heizflächenrohre are arranged in the deflection such that they surround the one-sided offset from each other arranged inside Heizflächenrohre, preferably U-shaped, the vertical distance of the Heizflächenrohre the inner deflection can be reduced to the longitudinal pitch in the Heizflächenennadel or Heizflächenpaket. Due to the one-sided deflection of only the inner Heizflächenrohre a Heizflächenennadel it is possible to achieve that of the outer non-curved Heizflächenrohren a in a first Heizflächendurchgang a Heizflächenennadel the most heated Heizflächenrohr after the deflection in the deflection in a second Heizflächendurchgang least heated Heizflächenrohr represents the bundled disposed Heizflächenrohre and that a rather cold Heizflächenrohr from the outer, not curved Heizflächenrohren the first Heizflächendurchganges in the second Heizflächendurchgang is in a hotter area. This achieves uniform, optimized heat absorption over the entire area of the heating surface arrangement. If, on the other hand, all heating surface tubes in the deflecting region were offset from each other on one side and thus also the outermost heating surface tube, then the heating surface tube located in a first heating surface passage of a heating surface needle would form the heating surface tube lying hot in a second heating surface passage even after the deflection in the deflection region The coldest Heizflächenrohr in the first Heizflächendurchgang would also form the coldest Heizflächenrohr in the second Heizflächendurchgang, creating a much more uneven heat absorption over the Heizflächenrohre the Heizflächenordnung is given to the Heizflächenanordnung invention. The number of internal, one-sided staggered Heizflächenrohre in the deflection preferably results from the selected bending radius for the Heizflächenrohr used and the required expansion compensation of Heizflächenrohre.

Advantageous embodiments of the invention are specified in the subclaims.
A preferred embodiment of the invention provides that between the n Heizflächenrohren a Heizflächendurchganges and the m Heizflächenrohren the same Heizflächendurchganges an alley, in particular a Rußbläsergasse is formed. By forming an alleyway between the fanned-out heating surface passage, it is not necessary to provide an alley in a heating surface needle provided above the fanned-out heating surface passage and an alley in a heating surface needle provided under the fanned-out heating surface passage, so that the number of necessary lanes in a heating surface arrangement can be reduced , which in turn the necessary Heizflächenpakethöhe and thus the height of the steam generator or the heat exchanger can be reduced.

Furthermore, it is preferably provided that the mutually offset mutually offset Heizflächenrohre and / or the mutually offset mutually offset Heizflächenrohre in the deflection have an equal bending radius. As a result, the packing density of Heizflächenrohre a Heizflächenennadel be increased in the deflection and thus in the entire Heizflächenennadel, whereby the necessary Heizflächenpakethöhe can be reduced.

According to a further preferred embodiment, the two-sided, in particular the two inner, mutually offset Heizflächenrohre are each bent to one side formed, wherein the mutually offset mutually offset Heizflächenrohre are formed bent to each opposite sides. For example, the innermost Heizflächenrohr is at a section formed by the cross-sectional area of the Heizflächenrohre a Heizflächenennadel bent to the right side, wherein the second most far Heizflächenrohr bent out to the left side. Characterized in that the mutually offset mutually offset Heizflächenrohre in the deflection of the Heizflächenennadel each bent to an opposite side, the required for a Heizflächenrohr bending radius of both sides mutually offset Heizflächenrohre in the deflection can remain unchanged, while reducing the height of Heizflächenennadel and reduction the height of the steam generator or the heat exchanger. The mutually offset mutually offset Heizflächenrohre are preferably in the deflection cross-nested, arranged nested, whereby an increase in the packing density of Heizflächenrohre in the deflection of a Heizflächenennadel can be achieved.

Further, it is preferably provided that a Heizflächenennadel is formed in the deflection region such that the Heizflächenennadel has an inner longitudinal division, which is formed reduced by a longitudinal pitch of a heating surface. The inner longitudinal division of a Heizflächenennadel corresponds to the distance of the innermost Heizflächenrohres or the innermost Heizflächenrohre two adjacent Heizflächurchgänge a Heizflächenennadel. The inner longitudinal division corresponds usually twice the bending radius of the innermost Heizflächenrohres or the innermost Heizflächenrohre in the deflection. According to the invention, it is possible in this embodiment to reduce the usually provided inner longitudinal pitch of a Heizflächenennadel, preferably by a longitudinal pitch of a Heizflächenrohres to reduce the height of a Heizflächenennadel and thus the Heizflächenpakethöhe can. The height of the heating surface needle can preferably be reduced so far that the inner longitudinal division of the heating surface needle corresponds to a longitudinal division of a heating surface.

A further advantageous embodiment of the invention provides that the number of inside one-sided mutually offset Heizflächenrohre based on the selected bending radius for the Heizflächenrohr used and the required expansion compensation of Heizflächenrohre.

Furthermore, the invention relates to a steam generator and / or a heat exchanger comprising a Fieizflächenanordnung as educated and further developed above.

The invention will be explained in more detail with reference to the accompanying drawings with reference to preferred embodiments.

Fig. 1

eine schematische Darstellung einer ersten konventionellen Heizflächenanordnung;

Fig. 2

eine schematische Darstellung einer erfindungsgemäßen Heizflächenanordnung gemäß einer ersten Ausführungsform mit einem aufgefächerten Heizflächendurchgang;

Fig. 3

eine schematische Schnittdarstellung durch die Querschnittsfläche einer zweiten konventionellen Heizflächennadel;

Fig. 4

eine schematische Darstellung einer erfindungsgemäßen Heizflächenanordnung gemäß einer zweiten Ausführungsform mit einer Schnittdarstellung durch die Querschnittsfläche einer erfindungsgemäßen Heizflächennadel, welche eine beidseitig versetzte Ausbiegung der beiden innen liegenden Heizflächenrohre aufweist;

Fig. 5

eine schematische Darstellung einer erfindungsgemäßen Heizflächenanordnung gemäß einer Kombination der in Fig. 2 gezeigten ersten und der in Fig. 4 gezeigten zweiten Ausführungsform;

Fig. 6

eine schematische Darstellung einer dritten konventionellen Heizflächenanordnung; und

Fig. 7

eine schematische Darstellung einer erfindungsgemäßen Heizflächenanordnung gemäß einer dritten Ausführungsform mit einer einseitigen Ausbiegung mehrerer innen liegender Heizflächenrohre einer Heizflächennadel.

Show it:

Fig. 1

a schematic representation of a first conventional Heizflächenanordnung;

Fig. 2

a schematic representation of a Heizflächenanordnung invention according to a first embodiment with a fanned Heizflächendurchgang;

Fig. 3

a schematic sectional view through the cross-sectional area of a second conventional Heizflächenennadel;

Fig. 4

a schematic representation of a Heizflächenanordnung invention according to a second embodiment with a sectional view through the cross-sectional area of a Heizflächenennadel invention, which has a mutually offset deflection of the two inner Heizflächenrohre;

Fig. 5

a schematic representation of a Heizflächenanordnung invention according to a combination of in Fig. 2 shown first and in Fig. 4 shown second embodiment;

Fig. 6

a schematic representation of a third conventional Heizflächenanordnung; and

Fig. 7

a schematic representation of a Heizflächenanordnung invention according to a third embodiment with a one-sided deflection of several internal Heizflächenrohre a Heizflächenennadel.

Fig. 1 shows a schematic representation of a known from the prior art conventional Heizflächenanordnung a steam generator with a first Heizflächenpaket 10 and a second Heizflächenpaket 12, which are formed of a plurality of mutually parallel Heizflächenrohren 14 in the form of coils. The Heizflächenrohre 14 have horizontally formed portions 16 and deflection 18, wherein the deflection 18 are provided between each two horizontally formed portions 16. In the horizontally formed regions 16, the Heizflächenrohre 14 are arranged bundled to Heizflächurchgängen 20, 22, wherein two adjacently arranged Heizflächurchgänge 20, 22 each form a Heizflächenennadel 24.

At the in Fig. 1 As shown, the heating surface arrangement has five mutually parallel heating surface tubes 14, which are arranged in alignment. In the Fig. 1 shown Heizflächenpakete 10, 12 each consist of two Heizflächennadeln 24, from whose height the Heizflächenpakethöhe 26 a Heizflächenpaketes 10, 12 results. The Heizflächenpakethöhe 26 a Heizflächenpaketes 10, 12 is determined by the value of the longitudinal pitch 28 of the height of Heizflächurchgänge 20, 22 and the value of the inner longitudinal pitch 30 of a Heizflächenennadel 24. The longitudinal pitch 28 of a Heizflächendurchganges 20, 22 results from the vertical distance between two superimposed, mutually parallel Heizflächenrohre 14, wherein the longitudinal division 28 is measured in each case from the center of Heizflächenrohre 14. The inner longitudinal division 30, also measured from the center of the Heizflächenrohre 14, determined from the distance of two Heizflächurchgänge 20, 22 of a Heizflächenennadel 24, wherein usually the inner longitudinal division 30 of a Heizflächenennadel 24 twice the bending radius of the innermost Heizflächenrohres 14 in the deflection 18 a Heizflächenennadel 24 corresponds. Between two Heizflächenpaketen 10, 12 each have an alley 32, in particular a Rußbläsergasse formed.

By the appropriate utilization of the possible Heizflächenpakethöhe 26, the number of necessary lanes 32 results in a Heizflächenanordnung. However, with the number of required lanes 32, the height of the steam generator or heat exchanger also increases. With an optimal utilization of the possible Heizflächenpakethöhe 26, the number of necessary lanes 32 and thus the height of the steam generator or heat exchanger can be reduced. An optimal utilization of the possible heating surface package height 26 is through in the Fig. 2 . 4 . 5 and 7 allows embodiments of the invention shown.

The Heizflächenanordnungen described below relate to all types of steam generators and heat exchangers, such as may be part of power plants, in particular fossil-fired and preferably coal-fired power plants.

Fig. 2 shows a first embodiment of a Heizflächenanordnung invention, in which a Heizflächendurchgang 120a is formed fanned by the Heizflächenrohre 114 of the Heizflächendurchganges 120a are arranged split, where n Heizflächenrohre 114, 134 of Heizflächurchganges 120a one above the Heizflächenendurchganges 120a lying first heating surface 110 and a Heizflächenennadel 124 of the first heating surface 110 and M Heizflächenrohre 114, 136 are associated with a lying below the Heizflächendurchganges 120a second heating surface 112 and a Heizflächenennadel 124 of the second heating surface 112. The term "n" stands at this in Fig. 2 The example shown for five heating surface tubes 114 and the term "m" also stands for five heating surface tubes 114, wherein a heating surface passage 120, 120a, 122 comprises a total of ten substantially parallel heating surface tubes 114. The Heizflächenpakethöhe 126 of the first Heizflächenpaketes 110 a results thereby from the height of Heizflächenennadel 124, which is dependent on the longitudinal pitch 128 of the height of the Heizflächurchgänge 120, 122 and the inner longitudinal division 130 of the Heizflächenennadel 124, and the height of n Heizflächenrohre 114, 134 of Heizflächenendurchganges 120a and the height of the upper Heizflächenrohre 114, 134 of the fanned Heizflächendurchganges 120a and an inner longitudinal division 130. The Heizflächenpakethhehe 126 of the second Heizflächenpaketes 112a results from the height of the Heizflächenennadel 124, which is dependent on the longitudinal pitch 128 of the height of the Heizflächurchgänge 120th , 122 and the inner longitudinal division 130 of the heating surface needle 124, and the height of the m Heizflächenrohre 114, 136 of the Heizflächendurchganges 120 a and the height of the lower Heizflächenrohre 114, 136 of the fanned Heizflächendurchganges 120 a and an inner longitudinal division 130th

By the in Fig. 2 shown embodiment of a Heizflächenanordnung a steam generator or Heat exchanger, it is possible to achieve optimally adapted Heizflächenpakethöhe 126 and thus a reduction of the steam generator height or a reduction of the heat exchanger height.

Between the n Heizflächenrohren 114, 134 of the Heizflächendurchganges 120 a and the m Heizflächenrohren 114, 136 of Heizflächendurchganges 120 a, an alley 132 is formed, which may be formed, for example, as Rußbläsergasse.

By fanning a Heizflächendurchganges 120 a any Heizflächenpakethhehe 126 can be realized, the number of lanes 132 minimized and thus the steam generator height or heat exchanger height can be reduced.

In the Fig. 2 shown Heizflächenanordnung has a free space 142, within which a further heating surface 110, 112 and another Heizflächenpaket 110a, 112a can be arranged. The free space 142 represents a reserve, which can be filled in order to achieve a further optimally adapted Heizflächenpakeschöhe 126, which is for example designed such that a further lane 132 can be saved.

In order to achieve optimum utilization of the possible Heizflächenpakethöhe it may also be provided according to the invention, as in Fig. 4 . 5 and 7 2, the heating surface tubes 214a, 214b, 214c, 214d, 214e, 314a, 314b, 314c, 314d, 314e, 314f, 314g, 314h, 314i, 314j, 414a, 414b, 414c, 414d, 414e, 414f, 414g, 414h , 414i, 414j in the deflection region 218, 318, 418 of a Heizflächenennadel 224, 324, 424 more compact.

FIG. 3 and FIG. 4 show sectional views of two, parallel to a wall 40, 240 of the steam generator or heat exchanger juxtaposed Heizflächennadeln 24, 224th

Fig. 3 shows a conventional, known from the prior art arrangement of Heizflächenrohren 14a, 14b, 14c, 14d, 14e a Heizflächenennadel 24 Heizflächenpaketes 10, 12, wherein the Heizflächenrohre 14a, 14b, 14c, 14d, 14e are arranged in a row one above the other. The inner longitudinal pitch 30, ie the distance of the innermost Heizflächenrohres 14a a Heizflächenennadel 24 between a first Heizflächendurchgang 20 and arranged underneath the second Heizflächurchgang 22, in this conventional embodiment of a Heizflächenanordnung twice the bending radius of Heizflächenrohres 14a.

Fig. 4 shows a second embodiment of a Heizflächenanordnung invention, in which, in contrast to the in Fig. 3 The two Heizflächenrohre 214a, 214b disposed inside the deflecting region 218 of a Heizflächenennadel 224 Heizflächenpaketes 210, 212 are mutually offset on both sides, wherein the outer Heizflächenrohre 214c, 214d, 214e not mutually offset from each other, but in a row one above the other are arranged, wherein the outer Heizflächenrohre 214c, 214d, 214e engage around the laterally offset from each other inner Heizflächenrohre 214a, 214b u-shaped. The mutually offset mutually offset Heizflächenrohre 214a, 214b have an equally large bending radius, the inner longitudinal division 230 of the Heizflächenennadel 224 is smaller as the inner longitudinal division 30 of in Fig. 3 by reducing the inner longitudinal pitch 230 by a longitudinal pitch 228 such that the overall height of the heating surface needle 224 is reduced by a longitudinal pitch 228 from the overall height of a conventional, as in Fig. 3 shown, heating surface needle 24 is reduced. The heating surface tubes 214a, 214b, which are arranged offset from one another on both sides, are each designed to be curved to one side, the heating surface tubes 214a, 214b arranged offset from one another on both sides being bent out to opposite sides. At the in Fig. 4 In the embodiment shown, the heating surface pipe 214a is bent out to the left side, and the heating surface pipe 214b is bent out to the right side. The staggered arrangement of the heating surface tubes 214a, 214b causes the Heizflächenrohre 214a, 214b cross over in one place, so that, in the embodiment shown here, in the second Heizflächurchgang 222 innermost Heizflächenrohr 214a in the first Heizflächurchgang 220 the 2), so that the heating surface tubes 214a, 214b reverse their position in the first heating surface passage 220 to the second heating surface passage 222. By this arrangement of Heizflächenrohre 214 a, 214 b, 214 c, 214 d, 214 e, the height of a Heizflächenennadel 224 can be reduced by a longitudinal pitch 228.

In the Fig. 4 embodiment shown thus shows another way to minimize the Heizflächenpakethöhe and thus the height of a steam generator and the height of a heat exchanger by the inner two Heizflächenrohre 214a, 214b a Heizflächenennadel 224 in the deflection 218, depending bent to one side and offset by a longitudinal division 228 again in the respective Heizflächurchgang 220, 222 of Heizflächenennadel 224 are threaded.

Fig. 5 shows an embodiment in which the in Fig. 2 shown first possible embodiment with the in Fig. 4 the second possible embodiment shown is combined in a Heizflächenanordnung provided.

In the Fig. 5 The heating surface arrangement shown has two Heizflächenpakete 310a, 312a, which are formed of a plurality of substantially mutually parallel Heizflächenrohren 314a, 314b, 314c, 314d, 314e, 314f, 314g, 314h, 314i, 314j, which horizontally formed areas 316 and between two horizontally formed areas 316 each have a deflection region 318, wherein in the horizontally formed regions 316, the Heizflächenrohre 314a, 314b, 314c, 314d, 314e, 314f, 314g, 314h, 314i, 314j are arranged bundled to Heizflächurchgängen 320, 322, wherein two adjacent to each other arranged Heizflächurchgänge 320, 322 each form a Heizflächenennadel 324. A Heizflächendurchgang 320a is fanned out, wherein n Heizflächenrohre 334 of the Heizflächendurchganges 320a a first heating surface 310 or a first Heizflächenennadel 324 of the first heating surface 310 and M Heizflächenrohre 336 of the first Heizflächendurchganges 320a a second heating surface 312 or a second Heizflächenennadel 324 of the second heating surface are assigned , In addition, the two heating surface tubes 314a, 314b lying in each case in the deflection regions 318 are arranged so that they cross each other, offset from one another on both sides, wherein the heating surface tubes 314c, 314d, which lie in the deflection region 318, 314e, 314f, 314g, 314h, 314i, 314j engage around the inner heating surface tubes 314a, 314b arranged on both sides or offset from one another. The heating surface package height 326 is determined by the longitudinal pitch 328 of the height of the heating surface passageways 320, 322 of the inner longitudinal division 330 of the heating surface needle 324, the height of the fanned heating surface passageway 334, 336, and the inner longitudinal divider 330 of the diverter. Between the n Heizflächenrohren 334 of the fanned Heizflächendurchganges 320 a and the m Heizflächenrohren 336 of the fanned Heizflächendurchganges 320 a an alley is formed, within which a Rußbläsergasse can be formed. Furthermore, the heating surface arrangement has a free space 342 within which a further heating surface 310, 312 or a further heating surface package 310a, 312a can be provided.

Fig. 6 shows a known from the prior art unilateral deflection of Heizflächenrohre 14 a Heizflächenpaketes 10. Due to the unilateral bending out n all Heizflächenrohre 14 a Heizflächendurchganges 20, 22 and simultaneous jump to all n divisions is a reduction in Heizflächenpakethhehe 26 and thus reducing the height of the The disadvantage here is that in the first Heizflächurchgang 20 a Heizflächenennadel 24 hot lying Heizflächenrohr 14 even after the deflection in the second Heizflächurchgang 22 the hot lying Heizflächenrohr 14 forms. The coldest Heizflächenrohr 14 in the first Heizflächendurchgang 20 also forms the coldest Heizflächenrohr 14 in the second Heizflächendurchgang 22nd

Fig. 7 shows a third possible embodiment of the Heizflächenanordnung invention, in which case the height of Heizflächenennadel 424 and thus the Heizflächenpakethhehe 426 compared to in Fig. 4 is further reduced by the inner longitudinal pitch 430 of Heizflächenennadel 424 is reduced so that it corresponds to the dimensions of a longitudinal pitch 428 of Heizflächenpakete 410, 412. At the in Fig. 7 In the example shown, the heating surface needle 424 has two heating surface passages 420, 422, which are formed by ten mutually parallel Heizflächenrohre 414a, 414b, 414c, 414d, 414e, 414f, 414g, 414h, 414i, 414j with horizontally formed portions 416 and a deflection 418 , wherein the inner Heizflächenrohre 414a-414d are arranged on one side offset from one another and the outer Heizflächenrohre 414e-414j are arranged in series übere each other and surround the inner Heizflächenrohre 414a-414d U-shaped. The inner Heizflächenrohre 414a-414d are offset from one another in such a way that they cross over 424 in the deflection of the Heizflächenennadel. For example, since the outer heating surface tubes 414e-414j are not bent and thus not exchanged, the heating surface tube 414j in the first heating surface passage 420 is the least heated heating surface tube and the second heating surface passage 422 is the most heated heating surface tube. The difference in heat absorption in the first Heizflächendurchgang 420 and the second Heizflächurchgang 422 thus resembles in contrast to in Fig. 6 shown, known from the prior art Heizflächenanordnung, largely from.

Claims (8)

1. Heating surface arrangement of a steam generator or a heat exchanger with multiple heating surfaces (110, 112, 310, 312) and/or multiple heating surface banks (110a, 112a, 210, 212, 310a, 312a, 410, 412), which are configured from multiple heating surface pipes (114, 214a, 214b, 214c, 214d, 214e, 314a, 314b, 314c, 314d, 314e, 314f, 314g, 314h, 314i, 314j, 414a, 414b, 414c, 414d, 414e, 414f, 414g, 414h, 414i, 414j), which run substantially parallel to one another and have horizontally configured regions (116, 216, 316, 416) and a respective deflection region (118, 218, 318, 418) between two horizontally configured regions (116, 216, 316, 416), wherein in the horizontally configured regions (116, 216, 316, 416) the heating surface pipes (114, 214a, 214b, 214c, 214d, 214e, 314a, 314b, 314c, 314d, 314e, 314f, 314g, 314h, 314i, 314j, 414a, 414b, 414c, 414d, 414e, 414f, 414g, 414h, 414i, 414j) are arranged in bundles to form heating surface passages (120,122, 220, 222, 320, 322, 420, 422), wherein two heating surface passages (120,122, 220, 222, 320, 322, 420, 422) arranged to adjoin one another respectively configure a heating surface needle (124, 224, 324, 424), characterised in that
   a heating surface passage (120a, 320a) is formed fanned out, wherein n heating surface pipes (134, 334) of this fanned-out heating surface passage (120a, 320a) are associated with a first heating surface (110, 310) of the multiple heating surfaces (110, 112, 310, 312), which is located above the fanned-out heating surface passage (120a, 320a), or with a first heating surface needle (124, 324) of the multiple heating surface needles (124, 224, 324, 424)
   and m heating pipes (136, 336) of the same heating surface passage (120a, 320a) are associated with a second heating surface (112, 312) of the multiple heating surfaces (110, 112, 310, 312), which is located below the fanned-out heating surface passage (120a, 320a), or with a second heating surface needle (124, 324) of the multiple heating surface needles (124, 224, 324, 424),
   and/or
   that at least the two heating surface pipes (214a, 214b, 314a, 314b) located on the inside in a deflection region (318) are offset in relation to one another on both sides and/or at least the two heating surface pipes (414a, 414b, 414c, 414d) located on the inside in a deflection region (418) are offset in relation to one another on one side, wherein the respective heating surface pipes (214c, 214d, 214e, 314c, 314d, 314e, 314f, 314g, 314h, 314i, 314j, 414e, 414f, 414g, 414h, 414i, 414j) located on the outside in the deflection region (218, 318, 418) are arranged in a row one above the other, and
   at least one heating surface pipe (214c, 214d, 214e, 314c, 314d, 314e, 314f, 314g, 314h, 314i, 314j, 414e, 414f, 414g, 414h, 414i, 414j) located on the outside in the deflection region (218, 318, 418) encompasses the heating surface pipes (214a, 214b, 314a, 314b), which are located on the inside and are offset in relation to one another on both sides, or the heating surface pipes (414a, 414b, 414c, 414d), which are located on the inside and are offset in relation to one another on one side.
2. Heating surface arrangement according to claim 1, characterised in that a channel (132, 332), in particular a soot blower channel, is configured between the n heating surface pipes (134, 334) of a heating surface passage (120a, 320a) and the m heating surface pipes (136, 336) of the same heating surface passage (120a, 320a).
3. Heating surface arrangement according to claim 1 or 2, characterised in that the heating surface pipes (214a, 214b, 314a, 314b), which are offset in relation to one another on both sides, and/or the heating surface pipes (414a, 414b, 414c, 414d), which are offset in relation to one another on one side, have the same bending radius in the deflection region (218,318,418).
4. Heating surface arrangement according to one of claims 1 to 3, characterised in that the heating surface pipes (214a, 214b, 314a, 314b), which are offset in relation to one another on both sides, are each bent outwards to one side, wherein the laterally offset heating surface pipes (214a, 214b, 314a, 314b) are bent outwards to respectively opposite sides.
5. Heating surface arrangement according to one of claims 1 to 4, characterised in that a heating surface needle (224, 324) is configured in the deflection region (218, 318) in such a way that the heating surface needle (224, 324) has an internal longitudinal division (230, 330), which is reduced by a longitudinal division (228, 328) of a heating surface (210, 212).
6. Heating surface arrangement according to one of claims 1 to 4, characterised in that a heating surface needle (424) is configured in the deflection region (418) in such a way that the heating surface needle (424) has an internal longitudinal division (430), which corresponds to a longitudinal division (428) of a heating surface (410, 412).
7. Heating surface arrangement according to one of claims 1 to 6, characterised in that the number of heating surface pipes (214a, 214b, 314a, 314b, 414a, 414b, 414c, 414d), which are located on the inside and are offset in relation to one another on one side, is based on the selected bending radius for the heating surface pipe (214a, 214b, 314a, 314b, 414a, 414b, 414c, 414d) used and the necessary expansion compensation of the heating surface pipes (214a, 214b, 314a, 314b, 414a, 414b, 414c, 414d).
8. Steam generator and/or heat exchanger comprising a heating surface arrangement according to one of claims 1 to 7.

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