EP3201550B1 - Installation for condensing steam - Google Patents

Description

The invention relates to a plant for the condensation of steam with the features of claim 1.

Systems for the condensation of turbine or process vapors have been used in energy engineering in very large dimensions for many years ( DE 199 37 800 A1 ). Air-cooled condensers are used for the direct condensation of turbine exhaust. They can be considered as a special form of use of air-cooled heat exchangers. Air-cooled heat exchangers are used to cool fluids using ambient air in various processes in the chemical, petrochemical and power generation industries. The heat exchangers essentially consist of heat exchanger tubes, which are provided on the outside with ribs due to the poor thermal conductivity of the air to improve the heat transfer. The heat transfer to the cooling medium air using heat exchangers by heat conduction and convection is often referred to as dry cooling. The heat exchanger tubes of air-cooled heat exchangers are combined into so-called bundles by welding them into flat, perforated, thick-walled metal sheets, which are also called tube sheets. These bundles are referred to as finned tube bundles or tube bundles.

The inflow of the fluid to be cooled to the heat exchanger tubes by means of steam distribution lines, which are welded to the top of the tubesheets. The drain of the condensate and the distribution of superfluous vapor via condensate collector, which are welded to the bottom of the tubesheets.

The cooling medium air is conveyed through the heat exchanger bundles with the help of suction or blowing fans. A common construction is the so-called roof construction method. In this arrangement, fans are in an oppressive arrangement below roof-shaped heat exchanger bundles. The roof-shaped arranged heat exchanger bundles with the fans are supported by a support structure, the fans are supported by a fan bridge.

The adaptation of air-cooled condensation plants to the Abdampfmenge or turbine size and the operating and environmental conditions (air temperature) can be done in principle on the change of the heat exchanger surface and / or on the change of the cooling air flow.

To promote the cooling air, fans (fans) in axial design are used in all air-cooled heat exchangers for industrial applications, since they are suitable to deliver the required large volume flows at low pressure differences.

If a plurality of heat exchanger bundles are assigned to one or more fans in such a way that the heat flow transmitted by the heat exchanger bundles and the cooling air volume flow absorbing this heat are in equilibrium, a geometric basic pattern, which is also referred to as a module, is produced depending on the design. If the modules or cells are arranged one behind the other (series connection), so-called multi-cell, single-row systems are created. Due to the air supply of Below, cells or modules in roof construction can also be produced by connecting several roof rows of air-cooled condensers in almost any size in parallel.

The main advantage of the roof construction method is the possibility of using the parallel and series connection of the individual cells to produce very large systems. However, the fans arranged below the heat exchanger bundles must be provided with protective grids in the roof construction method for protection against falling parts or in the event of damage to the fan. In addition, reduced by the fan race, which is arranged to achieve defined flow conditions to the fan or fan, the air inlet height. As a result, the support structure on which rest the heat exchanger bundles, must be increased accordingly.

Another disadvantage may be due to recirculation of the heated cooling air. Due to the low hot air velocities in the roof construction of the capacitors, a so-called wind wall must be installed around the outer heat exchanger elements, which consist of an additional support structure with wind wall panels.

Further, in the roof construction, it is necessary to provide all-round accessibility to allow cleaning of the heat exchanger elements.

Heat exchanger bundles in V-arrangement with overhead fans can be built in a lower height, but are in heat exchanger bundles that are not self-supporting, very complex support structures required ( DE 103 23 791 A1 ). For this reason, heat exchangers in V-construction are mostly used only in the area of process coolers with horizontally arranged heat exchangers (water recooler, air-conditioning technology). There, the sizes are significantly or significantly smaller, whereby the support structure for the V-arrangement is economically feasible. The fans are also smaller and lighter. For larger systems, however, the support structure is always more complex and was previously considered uneconomical.

The DE 10 2007 012 539 B4 discloses to store at bottom fans and roof-shaped heat exchanger elements above a frame-like fan field on a reduced number of supports in order to reduce the steel construction cost. Below each fan field, at least one support is provided in the form of a column running vertically to the fan fields, with obliquely extending head struts, which extend to the corners of a fan field, adjoining the fan field and the column above the column. The fans themselves are mounted on or on the fan fields.

By the US 8,235,363 B2 includes a heat exchanger assembly of the prior art, in which a cooling tower is composed of heat exchanger bundles, in particular in a hexagonal arrangement. The fan is located above the bundles. Several of these tower modules can be arranged side by side. However, the contacting surfaces of juxtaposed modules do not participate in the heat exchange. The fan is stored on a central pillar. At the upper end of the tower there is a bridge, which is supported on the ground by means of end support pillars. The supporting structure has the shape of a bridge with three pillars. The disadvantage is that a comparatively complex steel construction and a very complex steam distribution line is necessary for each individual module. Each cell requires three foundations for the three columns. A series and parallel connection of the individual modules for the construction of larger systems is also not possible. Also the US 3,707,185 A1 discloses a heat exchanger assembly in which a cooling tower is assembled from heat exchanger bundles. The invention is based on the prior art, the task of demonstrating a system for the condensation of steam for each turbine size, which allows a reduction of the use of material and a reduction of assembly costs with regard to the supporting framework.

This object is achieved by a system for the condensation of steam with the features of claim 1.

Advantageous developments of the invention are the subject of the dependent claims. The plant according to the invention for the condensation of steam comprises tube bundles which are connected with their upper ends to steam distribution lines and with their lower ends are connected to condensate collector. The tube bundles are thus flowed through from top to bottom by steam. Here, the tube bundles are arranged in a V-shape, so that the steam distribution lines of a pair of tube bundles are at a greater distance from each other than the condensate collector of the pair of tube bundles, which are arranged in the region of a lower vertex of the V-shaped arrangement.

Above the pair of tube bundles at least one fan is arranged in the region between the steam distribution lines. The basic geometrical pattern of tube bundles arranged in V-shape, the fans arranged above the pair of tube bundles, the associated steam distribution lines in the upper area and the condensate collectors in the lower area will also be referred to below as a cell or module. It is a unit in which the heat flow transmitted by the bundles and the cooling air volume flow absorbing this heat are in equilibrium.

A particular feature is that the fan is carried by a central pillar extending from the fan to the crown. That is, the central pillar penetrates the triangular in cross-section interior, which widens from bottom to top in the direction of the fan.

The tube bundles themselves are mounted on a support bracket which extends in the longitudinal direction of the apex and is connected to the central support pillar. The central pillar therefore not only takes the load of the fan, but on the support brackets, the load of the tube bundles and the support brackets themselves.

In addition, the tube bundles are self-supporting. This means that the tube bundles do not require an additional support structure to support the tube bundles against deflection, for example. It is sufficient if the tube bundles in the region of its lower end, that is, in the region of the apex have a support and are also fixed in the region of their upper ends. Mutually adjacent tube bundles may, for example, be connected to one another via a common steam distribution line.

The fan is a relatively heavy component, wherein a fan in the context of the invention, both the drive unit and the associated gear unit and the fan blades themselves are understood. This fan unit contributes significantly to the total weight of the condensation plant. To relieve the tube bundle, however, the weight of the fan is not transmitted via a fan console or fan platform, which in turn is mounted on the tube bundles, but the weight is introduced directly into the buttress. The pillar itself is the central, load-bearing component that additionally absorbs the weight of the self-supporting tube bundles via the support brackets. Added to this is the weight of the condensate collector and the steam distribution lines, which are arranged on the upper side or underside of the tube bundle.

Overall, the entire weight of such a cell or such a module via a single buttress in the footprint, especially the ground, are derived. It is not necessary to provide a variety of foundations or supports per cell. It should be noted that usually several such modules are used in series or parallel connection. The cells or modules can therefore support each other laterally. Larger systems also get their stability through the plurality of modules or cells and the majority of central pillars. Preferably, units of at least four modules are mounted in a carafe arrangement.

The weight of the fan or the fan assembly can be derived particularly effective when the central pillar extends vertically below the fan to the support bracket. The invention does not exclude that the central buttress for reasons of air flow or for reasons of design or design does not extend downwards centrally from the fan, but the central solution is considered to be the most appropriate solution.

The central support pillar preferably also has a lower portion, which is continued below the support bracket to the footprint of the system. The abutment therefore has two sections which are loaded to different degrees. The upper portion within the triangular prismatic area defined by the tube bundles carries the fan or fan assembly. The lower Section of the central buttress also adds the weight of the tube bundles and the supply and discharge lines. So that the entire arrangement remains in equilibrium, the arrangement is preferably arranged symmetrically with regard to the central supporting pillar. This means that the support brackets are preferably the same length.

It is possible with an arrangement of at least three rows of modules to provide transversely to the rows extending cross member. The modules are stored on the crossbeams. The cross members are preferably carried by the lower portions of the central pillars.

The cross members are dimensioned and arranged so that fewer pillars are required with a protruding up to the footprint lower length section are available as a total support pillars. For example, the connection between the cross members and the footprint may be via the pillars of only every other row of modules. If the buttresses which protrude to the footprint are not the pillars of the marginal ranks, then e.g. five rows of modules are stored on two buttresses below the second and fourth rows. With a number of n rows, therefore, n-3 pillars are sufficient for support on the installation surface.

However, the invention does not exclude that a cross member is supported by cross member supports, which are not congruent with the lower lengths of the central columns. Such displaced relative to the longitudinal axes of the central supports cross member supports may be additionally or alternatively provided to lower portions of the central columns. Preferably, the number of cross member supports is smaller than the number of central columns of the modules.

It is considered particularly expedient if, in the case of several rows of tube bundles in a V-shaped arrangement, mutually adjacent tube bundles are connected with their upper ends to a common steam distribution line. This allows the individual cells to be placed closer together. The tube bundles are mutually supported in the horizontal direction. It is not additional vertical support of the steam distribution lines required. Thermal changes in length of the bundles can be easily compensated.

The adjacent tube bundles can also be referred to as a roof-shaped arrangement or roof row. The respective outer tube bundles are without outside support by another tube bundle. You can be connected by struts with the respective adjacent inner tube bundles. Tensile and compressive forces are derived by means of struts over the adjacent cell.

The outer tube bundles are connected to their own steam distribution lines. The cross sections of the outer rows of the steam distribution lines may be smaller than the cross sections of the inner steam distribution lines.

The sealing and support of a fan race surrounding the fan is provided by means of a secondary support structure. The secondary support structure carries and includes in particular closed walls. These form, so to speak, the end or gable end of the V-shaped arrangement of tube bundles. The secondary support structure comprises in particular a supporting structure of individual struts. This secondary support structure is self-supporting. It in turn rests on or on the primary support structure and there on the support brackets. The primary supporting structure also includes the central supporting pillar. For the secondary support structure of the support pillar is in particular a centering in the horizontal direction, so that the fan race is arranged concentrically to the fan. This secondary support structure does not carry the load of the tube bundles, but serves to seal the triangular prism-shaped interior and to provide a floor on which the fan race is mounted. The secondary support structure may be a truss structure in which struts have the supporting function and trim elements disposed thereon have a sealing function. But it is also possible that the secondary support structure has self-supporting, flat support elements, for example made of fiber-reinforced plastics, in particular of glass fiber reinforced plastics. The fan race can be made of the same material as the support elements. It can be part of a fan cover that is the same as the upper end the cell forms. The dreickeckförmigen side walls may have maintenance openings.

Since such systems for the condensation of steam are usually used only in combination with power plants or correspondingly large industrial plants, several modules are regularly combined to form an entirety of a condensation plant together. In modular construction, therefore, there is the possibility of capturing certain loads differently than would be possible with a single module. In an advantageous embodiment, it is therefore provided that in the longitudinal direction of the vertex adjacent pillars and / or pillars of adjacent V-shaped rows of tubes below the support brackets extend at least over a portion of their length in an angle deviating from 90 ° to a horizontal plane. In other words, the respective central abutment with its lower section, although continued to the ground or to a base, but not necessarily vertical in its course.

Support pillars of a single vertex, that is, a single row, can be approximated so as to be supported on a common foundation. It is also conceivable that adjacent pillars of different rows of V-shaped arrangements to run towards each other and are also stored on a common foundation. It can therefore groups of two pillars or even groups of four pillars are combined and stored on a common foundation. In particular, in a kareeartigen arrangement of the modules, therefore, the cost of storage of the entire capacitor assembly can be reduced under certain conditions.

If the foundations or supports are not arranged vertically underneath the fans, horizontal forces arise that have to be absorbed. For this purpose, adjacent pillars and / or tube bundles and / or support brackets can be connected to each other via struts. The exact arrangement results from the size and orientation of the horizontal forces and ultimately also from the design and location of the abutments and foundations.

In particular, the support bracket is a cantilever cantilevered to the buttress, comparable to a branch on a trunk. The support bracket itself is not additionally supported compared to the footprint. The forces that rest on the support brackets are taken up exclusively via the central pillar and discharged downwards. In order to reduce the moment load in the region of the connection region on the support pillar, support means, in particular in the form of ropes or rods, can be provided which are fastened in particular to the distal ends of the support bracket and which extend from the upper end of the support pillar to the lower support pillar extend.

The pillars and / or the support brackets may be at least partially formed by trusses. The buttress can be configured differently due to its load profile in its upper portion than in its lower portion.

The buttress may be at least partially tubular. It can be a concrete support tube or a steel tube. Tubular abutments have the advantage that the abutment itself can form a channel to direct cooling air from the bottom up to a drive unit of the fan. For pillars in the form of truss girders may be installed in the truss structure channels to direct the cooling air from the bottom up to a drive unit of the fan in the same way. In addition, a fan may be provided to suck or push the cooling air through the channel in the buttress.

Such a blower is only required if the suction pressure of the fan is insufficient.

It is within the scope of the invention conceivable that a transmission and a drive for the fan below the support brackets, that is, is arranged below the supports of the tube bundle within or on the central buttress and is connected via a very long drive shaft to the fan.

With a central support of the fan group, the central support pillar allows direct access to the maintenance of the fan group. Tubular or pylon-like abutments can be provided with a corresponding climbing aid.

In the area of the vertex, a walk-in cleaning stage can be mounted, so that the individual tube bundles are easily accessible and can be maintained.

The underlying structure of the invention and the combination of V-shaped heat exchanger arranged in several rows make it possible to produce systems for the condensation of steam, with sucking arrangement of the fan, in any required size particularly economical.

By providing additional air intake surfaces, a significant reduction in the required air inlet height and thereby a more cost-effective support structure is possible, compared to the roof construction and downwardly disposed fans.

The lower height also causes the lengths of the steam-carrying pipelines to be reduced. Since very large cable cross-sections are used here, this difference is significant.

The elimination of the fan guard and the air transfer bridge compared to the roof-type condenser (roof-type condenser) results in lower air-side pressure losses and thus a lower power requirement.

The elimination of the wind wall and the Lüftertragbrücke compared to the roof construction reduces the material requirement of the system. As a result, the number of parts of the system and thus also the construction and assembly costs are reduced.

The arrangement of the central pillar further reduces the cost of materials for the primary support structure and fan support.

By self-supporting tube bundle connected only by struts can be dispensed with an otherwise necessary support structure with a V-shaped arrangement of vertical tube bundle.

By eliminating the Lüftertragbrücke more uniform flow conditions for the fan and more optimal working conditions are effected, which cause a lower wear of the fan and gearbox.

By the invention of the underlying arrangement with a central pillar, the footprint of the system is reduced.

Figur 1

eine Anlage zur Kondensation von Dampf in einer ersten Seitenansicht;

Figur 2

die Anlage der Figur 1 in einer zweiten Ansicht;

Figur 3

eine Anlage zur Kondensation von Dampf in einer Draufsicht;

Figur 4

eine weitere Ausführungsform einer Anlage zur Kondensation von Dampf in einer ersten Seitenansicht;

Figur 5

die Anlage der Figur 4 in einer zweiten Seitenansicht;

Figur 6

ein einzelnes Modul der Anlage der Figur 4 in einer perspektivischen Ansicht;

Figur 7

ein Modul der Figur 6 in der Draufsicht;

Figur 8

eine perspektivische Darstellung einer weiteren Ausführungsform einer Stützkonstruktion für ein Modul;

Figur 9

das Modul der Figur 8 in der Seitenansicht;

Figur 10

das Modul der Figuren 8 und 9 in einer weiteren Seitenansicht;

Figur 11

das Modul der Figuren 8 bis 10 in einer Draufsicht;

Figur 12

in perspektivischer Darstellung eine weitere Ausführungsform einer Anlage zur Kondensation von Dampf;

Figur 13

die Anlage gemäß Figur 12 in einer Seitenansicht;

Figur 14

in schematischer Darstellung eine weitere Ausführungsform einer Anlage zur Kondensation von Dampf in einer ersten Seitenansicht;

Figur 15

die Anlage der Figur 14 in einer zweiten Ansicht;

Figur 16

die Anlagen der Figuren 14 und 15 in der Draufsicht von oben;

Figur 17

eine weitere Ausführungsform einer Anlage zur Kondensation von Dampf in einer ersten Seitenansicht;

Figur 18

die Anlage der Figur 17 in einer zweiten Ansicht;

Figur 19

die Anlage der Figuren 17 und 18 in einer Draufsicht von oben;

Figur 20

in schematischer Darstellung eine weitere Ausführungsform einer Anlage zur Kondensation von Dampf in einer ersten Seitenansicht;

Figur 21

die Anlage der Figur 20 in einer zweiten Ansicht;

Figur 22

die Anlagen der Figuren 20 und 21 in der Draufsicht von oben;

Figur 23

eine weitere Ausführungsform einer Anlage zur Kondensation von Dampf in einer Seitenansicht;

Figur 24

eine weitere Ausführungsform eines Anlage zur Kondensation von Dampf in einer Seitenansicht und

Figur 25

eine weitere Ausführungsform einer Anlage zur Kondensation von Dampf in einer Seitenansicht.

The invention will be explained in more detail with reference to the embodiments illustrated in the schematic drawings. Show it:

FIG. 1

a plant for the condensation of steam in a first side view;

FIG. 2

the plant of FIG. 1 in a second view;

FIG. 3

a plant for the condensation of steam in a plan view;

FIG. 4

a further embodiment of a system for the condensation of steam in a first side view;

FIG. 5

the plant of FIG. 4 in a second side view;

FIG. 6

a single module of the plant FIG. 4 in a perspective view;

FIG. 7

a module of FIG. 6 in the plan view;

FIG. 8

a perspective view of another embodiment of a support structure for a module;

FIG. 9

the module of FIG. 8 in the side view;

FIG. 10

the module of FIGS. 8 and 9 in a further side view;

FIG. 11

the module of FIGS. 8 to 10 in a plan view;

FIG. 12

a perspective view of another embodiment of a system for the condensation of steam;

FIG. 13

the system according to FIG. 12 in a side view;

FIG. 14

a schematic representation of another embodiment of a system for the condensation of steam in a first side view;

FIG. 15

the plant of FIG. 14 in a second view;

FIG. 16

the plants of FIGS. 14 and 15 in the top view from above;

FIG. 17

a further embodiment of a system for the condensation of steam in a first side view;

FIG. 18

the plant of FIG. 17 in a second view;

FIG. 19

the plant of FIGS. 17 and 18 in a plan view from above;

FIG. 20

a schematic representation of another embodiment of a system for the condensation of steam in a first side view;

FIG. 21

the plant of FIG. 20 in a second view;

FIG. 22

the plants of FIGS. 20 and 21 in the top view from above;

FIG. 23

a further embodiment of a system for the condensation of steam in a side view;

FIG. 24

a further embodiment of a plant for the condensation of steam in a side view and

FIG. 25

a further embodiment of a plant for the condensation of steam in a side view.

FIG. 1 shows a plant 1 for the condensation of steam. The system 1 is shown purely schematically and is intended to illustrate only the constructive principle. The plant 1 comprises tube bundles 2, which are connected with their upper ends 3 to steam distribution lines 4. With their lower ends 5, the pipes 2 are each connected to condensate collector 6. The tube bundles 2 are arranged in a V-shape, so that the steam distribution lines 4 of a pair of tube bundles 2 run at a greater horizontal distance from each other than the condensate collector 6. The condensate collector 6 extend in the representation of FIG. 1 in the Image plane in the longitudinal direction of a vertex 7 are below. Above the pair of tube bundles 2 at least one fan 8 is arranged in the region between the steam distribution lines 4. Between the steam distribution lines does not mean that the fan 8 must necessarily be at the same height as the steam distribution lines 4. In plan view (FIG. FIG. 3 ) However, it can be seen that a single fan 8 is always in the projection on a footprint between the steam distribution lines 4.

The fan 8 is mounted on a central support pillar 9, which extends from the fan 8 to the apex 7. The supporting pillar 9 extends beyond the lower ends 5 and the condensate collector 6 in the direction of a footprint 10, on which the supporting pillar 9 is mounted. An upper section 11 of the support pillar 9 therefore essentially carries the fan 8 or a fan group comprising a fan transmission, not shown in more detail, and a fan drive unit. A lower portion 12 of the support pillar 9 additionally carries the tube bundles 2, which are mounted on support brackets 13 which extend in the longitudinal direction of the apex 7.

The support brackets 13 are narrow and only as wide as necessary. The support brackets 13 are used only to absorb the forces from the tube bundles 2 and the connected lines, namely the steam distribution line 4 and the condensate collector 6. In the amount of the support bracket 13, there is no closed platform as in the roof construction.

Such a unit of heat exchanger and fan is hereinafter referred to as module 14. FIG. 1 shows several identically designed modules 14. In this embodiment, there are four modules 14. The arrangement can also be referred to as VVVV arrangement, which can be continued in this form as desired.

FIG. 3 shows in a second side view that four such modules 14 are connected in series one behind the other and are fed via a common steam distribution line 4.

The steam distribution lines 4 extending between two modules 14 supply the mutually adjacent tube bundles 2 (FIG. FIG. 1 ). The adjacent tube bundles 2 are arranged in this area A-shaped or roof-shaped. she are connected to each other on the steam side. In the area of the lower ends 5, however, the individual tube bundles 2 open into separate condensate collectors 6. Only the peripheral tube bundles 2 are connected via their own steam distribution lines 4 to the steam supply. FIG. 1 shows, moreover, that for static reasons, the marginal tube bundle 2 are connected in the region of their upper ends 3 via horizontally acting struts 15 with the adjacent tube bundle 2. As a result, the outer tube bundle 2 are fixed. The inner tube bundle 2, however, do not have to be braced against each other. They lean against each other and are in particular coupled to each other via their tube plates, not shown, in the region of the steam distribution lines 4.

FIG. 2 shows the arrangement of FIG. 1 of the page. Overall, it should be at FIG. 1 so act to an array of 4 x 4 modules 14. Exemplary are in FIG. 3 two rows 16 of modules 14 are shown. The number of rows 16 can be increased as well as the length of the rows 16 in the direction of the apex 7.

It can be seen that the central supports 9 are arranged vertically below the fan 8 in the region of the apex 7 and, according to the number of modules 14, only 8 supporting pillars 9 are required in order to support the entire system 1.

The to the FIGS. 1 to 3 introduced reference numerals are retained in the other figures to designate functionally identical components.

FIGS. 4 and 5 show further details of a possible embodiment of a condensation plant. Unlike the FIGS. 1 to 3 was dispensed with the representation of the tube bundle and instead a secondary support structure 17 is shown, which will be described below with reference to FIGS. 6 to 7 is explained.

The structure of Appendix 1 in FIG. 4 is very similar to the one of Figures 1 and 2 , There are support pillars 9 can be seen with a lower portion 12 which is formed in each case in the form of a lattice girder. It joins at the lower portion 12 of the upper portion 11, which is in the form of a central tube to a Fan bottom 18 extends, which is part of the secondary support structure 17. Above the fan base 18 are the steam distribution lines. 4

Based on FIG. 5 It can be seen that the diameter of the steam distribution lines 4 gradually decreases in one direction. Steam is increasingly diverted downwards over the individual tube bundles 2. Consequently, the cross section of the steam distribution lines 4 can be reduced continuously or stepwise. The page presentation of the FIG. 5 shows that the support brackets 13 of a single module 14 are identically configured and formed as a lattice girder. They point in the diametrical direction along the apex 7. They are located below the secondary support structure 17, which extends above the support brackets 13 to the steam distribution lines 4.

In FIG. 6 the structure of the secondary support structure 17 can be seen. It encloses the triangular prismatic interior of the module 14. Two legs of the secondary support structure 17 extend parallel to the tube bundles 2. The legs carry a fan bottom 18, which forms the upper end of the secondary support structure 17. The triangular end faces of the interior are also spanned by the secondary support structure 17 in timber frame construction.

The fan bottom 18 carries a fan ring, not shown, which surrounds the fan blades of the fan for reasons of air flow. Overall, the entire module 14, as it is in FIG. 6 is shown, of self-supporting components. The secondary support structure 17 is self-supporting with its truss-like structure and the fan base 18. The steam distribution lines 4 are mounted on self-supporting tube bundles 2. The front steam dividing duct 4 has a smaller diameter than the rear steam distribution duct. This is because the rear steam distribution line 4 is provided to supply tube bundle 2 of another module. The front steam distribution line 4 supplies only the illustrated tube bundle 2. The support brackets 13 are as self-supporting as the central pillar 9. Overall, it is therefore possible to provide with reduced material costs and high vertical integration preconfigured modules available, which are mounted with less installation effort on site can.

FIG. 7 shows the module of FIG. 6 in the plan view. For reasons of clarity, the lower steam distribution line 4 is shown shortened. The fan base 18 has stiffeners in the corner, as well as struts 21, which extend from the upper edges of the two legs to the central pillar 9. About this struts 21 of the fan bottom 18 is centered. In a manner not shown, the secondary support structure 17 is substantially windproof dressed in the region of their triangular end faces.

The embodiment of FIGS. 8 to 10 is different from the one of FIG. 4 in that the central supporting pillar 9 is not formed in its lower portion 12 as a lattice girder, but is tubular. Also, its upper portion 11 is tubular. The central pillar 9 can thereby also be referred to as a tubular mast. However, due to the different load situation, there is a gradation in diameter above the support brackets 13. The support pillar 9 is made slimmer in its upper portion 11 than in its lower portion 12. In addition, the support brackets 13 via support means 19 with an upper end 20 of the support pillar. 9 connected. The support brackets 13 are thereby less burdened to bending. Thus, the overall height of the support brackets 13 can be reduced, in particular in the connection area to the central support pillar 9 (FIG. FIG. 9 ).

FIG. 10 shows in a further side view that two support means 19 are indeed brought together in the region of the upper end 20 of the support pillar 9, but are guided in the region of the support brackets 13 to the respective outer corners of the support brackets 13 and thus at a distance from the apex 7. This improves the torsional rigidity of the support brackets 13 in the direction of the apex 7. The axis of the apex 7 extends into the image plane of the FIG. 10 into and lies in the transition region from the thicker lower portion 12 of the buttress 9 to the slender upper portion 11 of the buttress 9.

FIG. 10 clearly shows the structure of the secondary support structure 17, which limits the substantially triangular prismatic interior and the fan base 18 carries in the upper area. The fan bottom 18 is configured square in this embodiment and has in the plane of the fan base 18 extending Truss struts with diagonal stiffeners in the corner area of the fan base 18. The number of struts is as small as possible in order to keep the air resistance as low as possible. Only for centering the fan base 18 relative to the upper end 20 of the central pillar 9, four struts 21 are provided, with which the fan base 18 is connected in the horizontal direction with the support pillars 9.

The embodiment of the FIG. 12 is different from the one of FIGS. 8 to 11 in that the support pillar 9 is formed in the region of its lower portion 12 as a tube with a larger diameter than in the embodiment of the FIG. 8 , This may in particular be a concrete pipe. This lower portion 12 extends in contrast to the embodiment of FIGS. 8 to 9 not through the support brackets 13 therethrough. The support brackets 13 are mounted on the lower portion 12. The upper portion 11 therefore does not start above the support brackets 13, but at the lower height range of the support brackets 13. This is due to the different material compositions of the support pillar 9. The support pillar 9 is therefore not necessarily a material unit integral component. It can be constructed in several parts as well as composed of different materials. The supporting pillar 9 can therefore be a hybrid component consisting of concrete or reinforced concrete in its lower section 12 and consisting of steel in the form of a lattice structure or a tubular structure in its upper section 11. With regard to the anchoring means 19, as they are in particular FIG. 13 can be seen on the explanations of the FIGS. 8 to 11 Referenced.

The embodiment of FIG. 14 is very similar to the one of FIG. 1 so that reference can be made to the reference numbers introduced there and the explanation there. The only difference is that the lower portion 12 of the supporting pillar 9 is arranged at an angle W to a horizontal plane H, which deviates from 90 °. Specifically, the horizontal plane is defined by the footprint 10 or defined by the plane in which the support brackets 13 of the individual modules 14 extend. In this embodiment, the lower ends 22 of adjacent rows 16 (FIG. FIG. 16 ) stored in a common foundation 23. The angle W is in this case transversely to the longitudinal extent of Rows 16 measured. FIG. 15 shows that the supporting pillars 9 are otherwise arranged at an angle W1 of 90 ° to the horizontal plane H.

In contrast, the embodiment of the shows FIG. 17 in that the supporting pillars 9 are arranged in the direction of the end faces of the individual rows 16 at a 90 ° angle W1 to the horizontal plane H. FIG. 17 shows that the lower portions 12 of the supporting pillars 9 with the horizontal plane H an angle W ( FIG. 18 ) not equal to 90 ° and as in the embodiment of FIG. 14 are combined in a common Lost Office 23. FIG. 19 shows that the said foundations 23 are located directly below the respective apex 7 of the rows 16 of modules 14. Even with this arrangement, only four central foundations 23 are required to store a total of eight modules 14.

FIG. 20 Finally, shows an embodiment in which the pillars 9 occupy with their lower ends 22 both in the direction of the apex 7 and in the direction transverse to the apex 7 an angle W of not equal to 90 ° to the horizontal plane H. As a result, only a single central foundation 23 is required for four modules 14, as in FIG FIG. 22 can be seen. The entire arrangement of FIG. 3 is therefore stored only on two foundations 23. With arrangements of three or four rows 16, further foundation points inevitably result, so that the arrangement as a whole gains even more stability.

In the FIGS. 14 to 23 it has been dispensed with the presentation of additional struts to reinforcements of the primary and secondary support structure. FIG. 23 shows a possible example of how the individual pillars 9 can be connected via lateral struts 24 with adjacent buttresses 9. These struts 24 may be crossed and extend from the lower ends 22 of the pillars 9 to or into the region of the support brackets 13. Together with struts 15 in the upper region of the tube bundle 2 and struts 25 in the support brackets 13 results in a truss-like stiffened composite, which can also accommodate high lateral wind loads at relatively low cost of materials.

FIG. 24 FIG. 12 shows an alternative embodiment that is applied to the crossing struts 24 (FIG. FIG. 23 ) waived. There are struts 15 in the upper region of the tube bundle 2 and additional horizontal struts 25 in the area of the support brackets 13 are provided. Due to the triangular arrangement, the horizontally acting struts 25 and the self-supporting tube bundles 2 result in a warp-resistant framework which can absorb very high loads.

FIG. 25 shows an embodiment in which an additional cross member 26 is arranged transversely to the rows of modules 14. The cross member 26 engages under all modules 14. It belongs to the primary support structure. It is located at the level of the support brackets 13. The support brackets 13 extend as in the other embodiments in the direction of the apex 7 and thus in the image plane. In this schematic representation, the support brackets 13 are located at the upper edge of the cross member 26. The supports 9 of each second module 14 extend through the cross member 26 therethrough. The supports 9 of the other modules 14 have only one upper portion 11. The supports 9 of the peripheral rows 16 have no lower portion. The edge-side rows 16 are supported by the cross members 26 of the supports 9 of the adjacent inner row 16. For a total of seven rows 16, therefore, only three supports 9 with lower sections 12 are required, which protrude to the footprint 10.

In a manner not shown, the tube bundles 2 are configured so that the plant 1 comprises at least one DC capacitor, in which steam and condensate flow in the same direction and at least one countercurrent condenser (dephlegmator), in which the condensate flows against the steam. The countercurrent condenser is connected to an upper suction chamber.

Reference numerals:

• 1 - Steam condensing plant
• 2 - tube bundles
• 3 - upper end of 2
• 4 - Steam distribution line
• 5 - lower end of 2
• 6 - Condensate collector
• 7 - apex 8 - fan 9 - central pillar 10- footprint 11 - upper section of 9 12 - lower section of 9 13- support bracket 14- module 15 - strut 16- row 17 - secondary support structure 18 - fan bottom 19 - suspension element 20 - upper End of 9 21 - strut 22 - lower end of 9 23 - foundation 24 - cross strut between 9 25 - strut 26 - cross member
• W angle
• W1 - angle
• H - horizontal plane

Claims (16)

1. Installation for condensing steam, with the following features:

   1.1 Two tube bundles (2) are connected by their upper ends (3) to steam distribution lines (4) for the introduction of steam into the tube bundles (2) and are connected by their lower ends (5) to condensate collectors (6) for receiving condensate from the tube bundles (2);

   1.2 The tube bundles (2) are arranged in V-shaped fashion such that the steam distribution lines (4) of a pair of tube bundles (2) run with a greater spacing to one another than the condensate collectors (6) of the pair of tube bundles (2), such that the condensate collectors (6) are arranged in the region of a lower vertex (7) of the V-shaped arrangement;

   1.3 Above the pair of tube bundles (2), at least one aspirating fan (8) is arranged in the region between the steam distribution lines (4);

   1.4 The fan (8) is borne by a central support pillar (9) which extends from the fan (8) to the vertex (7);

   1.5 The tube bundles (2) are mounted on a support bracket (13) which extends in the longitudinal direction of the vertex (7) and is connected to the central support pillar (9), such that the support pillar (9) bears the weight of the support bracket (13) and the tube bundles (2);

   1.6 The tube bundles (2) are self-supporting.
2. Installation for condensing steam according to claim 1, characterised in that the central support pillar (9) extends vertically below the fan (8) to the support bracket (13).
3. Installation for condensing steam according to claim 1 or 2, characterised in that the central support pillar (9) has a lower section (12) which extends from below the support bracket (13) to a placement surface of the installation (1).
4. Installation for condensing steam according to any of claims 1 to 3, characterised in that in the case of multiple rows (16) of tube bundles (2) in a V-shaped arrangement, adjacent tube bundles (2) are connected by their upper ends (3) to a common steam distribution line (4).
5. Installation for condensing steam according to any of claims 1 to 4, characterised in that support pillars (9) which are adjacent in a longitudinal direction of the vertex (7) and/or support pillars (9) of adjacent V-shaped tube rows (16) run, below the support brackets (13) and at least over a subregion of their length, at an angle (W) which deviates from 90° with respect to a horizontal plane (H).
6. Installation for condensing steam according to claim 5, characterised in that adjacent support pillars (9) which run obliquely at least in sections below the support brackets (13) are mounted on a common foundation (23).
7. Installation for condensing steam according to claim 6, characterised in that groups of two adjacent oblique support pillars (9) or, in the case of multi-row installations, groups of four adjacent oblique support pillars (9) are mounted on a common foundation (23).
8. Installation for condensing steam according to any of claims 1 to 7, characterised in that adjacent support pillars (9) and/or tube bundles (2) and/or support brackets (13) are connected to one another by means of struts (15, 24, 25).
9. Installation for condensing steam according to any of claims 1 to 8, characterised in that the support bracket (13) is held by bearing means (19) which extend from the support pillar (9) to the support bracket (13) situated at a lower level.
10. Installation for condensing steam according to any of claims 1 to 9, characterised in that a self-supporting support structure (17) is arranged on the support bracket (13) which, separately from the support pillar (9), bears the weight of a fan ring.
11. Installation for condensing steam according to any of claims 1 to 10, characterised in that the support pillars (9) and/or the support brackets (13) are formed at least partially by lattice girders.
12. Installation for condensing steam according to any of claims 1 to 11, characterised in that the support pillar (9) is at least partially of tubular form.
13. Installation for condensing steam according to any of claims 1 to 12, characterised in that the support pillar (9) has or forms a duct for conducting cooling air from bottom to top to a drive unit of the fan (8).
14. Installation for condensing steam according to claim 13, characterised in that a blower is provided for conveying the cooling air through the duct by suction or pressure action.
15. Installation for condensing steam according to any of claims 4 to 14, characterised in that multiple adjacent rows (16) of adjacent tube bundles (2) are mounted in a V-shaped arrangement on at least one cross member (26) which extends transversely with respect to the vertex (7), wherein the cross member (26) is mounted on at least one support pillar (9) and/or at least one cross member support.
16. Installation for condensing steam according to claim 15, characterised in that the number of support pillars (9) and/or cross member supports bearing the cross member (26) is smaller than the number of rows (16) borne by the cross member (26).

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