DE102015014458A1 - Door construction for a tubular tower construction - Google Patents

Abstract

The present invention relates to a door assembly for a tubular tower construction, wherein the door assembly has a door portion 71, wherein the door portion 71 in cross section corresponds to a shell 7 of a tubular tower structure 1 and is formed with a door opening 71a, wherein the door assembly comprises at least the door portion 71, wherein the Door section 71 is a partial shell of a shell 7 of a tubular tower construction 1, wherein a partial shell 72 is disposed axially to the door portion 71, wherein the partial shell 72 extends axially by the length of a partial shell 7a, reduced by at least the height of the door portion 71 axially.

Description

The invention relates to a door construction for a tubular tower construction.

Pipe tower structures are known, especially as a carrier of wind turbines. In this case, it is known in particular to manufacture pipe sections from sheet steel and to assemble the pipe sections one above the other with circumferential welds to form a tubular tower which receives a wind energy cone at its upper end. In order to connect the individual segments to one another, it is known to either weld them or to provide them with peripheral, flanging flanges in such a way that the superimposed flanges can be screwed together.

In addition, it is known to form such tower structures of partial shells, wherein the partial shells have at their longitudinal edges flanges with which these partial shells are screwed together.

From the WO 2011/092235 A2 a wind energy plant tower segment is known, which is also formed as a shell segment and consists of a reinforced concrete body, with two joints for attachment to shocks of at least one other tower segment and in the reinforced concrete body in the region of each shock at least one connecting body embedded and anchored therein for connection to a connecting body of a adjacent tower segment and the connecting body has a substantially parallel to the respective joint arranged mounting wall for receiving a directed transversely to the shock and transverse to the mounting wall tensile load. In such a device is disadvantageous in that it is relatively expensive to cast such concrete shells and also passport and produce accurate. Furthermore, the dismantling of such reinforced concrete towers is quite complicated and expensive.

From the DE 10 2010 039 796 A1 is a tower with an adapter piece and a method for producing a tower with the adapter piece known, in which case also a lower tubular tower section made of concrete and an upper tubular tower section made of steel is formed. Such hybrid towers are currently preferred for the construction of particularly high wind turbine towers, since with the concrete substructure large diameters are possible and on the substructure towers in this way conventional wind turbine towers can be placed on top to achieve greater heights and thus a better wind yield. However, it is disadvantageous that the dismantling of a concrete tower is relatively expensive and the assembly costs for concrete towers is relatively high, in particular by the concrete delivery.

From the WO 2010/121630 A2 is a tower for a wind turbine with a plurality of corner stems to form a dimensional construction known, the corner posts are each composed of several interconnected sub-profiles. Here, the corner handles are each composed of several interconnected sub-profiles so that connection areas are formed on adjacent sub-profiles, which, however, are bent out of the sub-profiles. In this embodiment, it is disadvantageous that precise and fast work is made more difficult.

From the DE 10 2009 058 124 B4 is also a concrete substructure for the tower of a wind turbine known.

From the DE 10 2011 011 603 A1 is a load-carrying means for lifting heavy components or plant components, in particular offshore installations known.

From the DE 203 21 897 U1 is a wind turbine with a stationary vertical mast or tower is known, on which the movable part of the wind turbine is arranged, wherein the mast consists at least partially of prefabricated wall parts, wherein a plurality of adjacent wall parts form a substantially annular mast section. Here, the wall parts or segments of reinforced concrete or other stone-like material are constructed and already prefabricated. The attachment of the concrete elements to each other is done with Zuganfang.

From the DE 10 2011 001 250 A1 For example, a device and a method for the transition between a steel tower section and a prestressed concrete tower section are known.

From the DE 10 2011 077 428 A1 a wind turbine tower is known comprising a plurality of prefabricated tower segments each having upper and lower horizontal flanges, one of the plurality of tower segments having at least two longitudinal flanges, each longitudinal flange having a first side for engaging a first side of another longitudinal flange and a second Side, which is laterally welded to the lateral surface, wherein the second side of the first side opposite.

From the DE 11 2010 005 382 T5 For example, a wall section for a wind turbine tower is known, wherein the wall section comprises a first wall segment and a second wall segment, and a connecting element, which has a first surface section, which is connected to the first wall segment mounted and extending in a first direction, a second surface portion attached to the second wall segment and extending in a second direction, and an intermediate portion having an intermediate surface portion extending transversely to the first direction and transverse to the second direction; wherein the connecting element is thereby formed T-shaped and is mounted on a corresponding wall or two abutting wall and is fastened thereto with bolts which protrude through the wall.

From the DE 10 2013 002 469 A1 a steel tube tower of a wind turbine is known, said wind turbine may have a substructure tower, said substructure tower has deep-drawn, deformed in several planes flanges, which should ensure both axial and radial tongue and groove joints. In addition, additional sheets are welded in the area of the substructure, resulting in a double-shell construction.

From the KR 10-1242505 a wind energy tower is known in which longitudinal flanges are screwed together, wherein between the longitudinal flanges spacer plates can be used.

From the DE 603 17 372 T2 are large-sized towers for wind turbines and method of building the same known, in which case longitudinal flanges are welded to the outer walls of the tower from the inside and connected to each other.

From the US 2012/0137620 A1 An arrangement of a wind energy tower on a foundation is known, wherein a T-shaped base of the tower is held by annular retaining segments on the ground.

From the EP 2 282 051 A2 the arrangement of a wind energy nacelle on a concrete tower is known.

From the EP 2 388 479 A1 is the connection of a sub-tower adapter with a tower of a wind turbine known.

From the EP 2 188 467 B1 is a tower, in particular for supporting telecommunications equipment, known, said tower consists of a plurality of flat sheets having outwardly facing flanges, which are formed with reinforcing plates.

In known concrete substructure towers is disadvantageous in that the construction is expensive and expensive and the dismantling after the period of use is complicated and expensive.

The object of the invention is to provide a door construction for a tubular tower construction, which allows great flexibility in the door opening.

This object is achieved with a door construction with the features of claim 1.

Advantageous developments are characterized in the dependent claims.

A tower construction, which includes the door construction, serves in particular as a substructure tower to set up a conventional tower for receiving wind turbines and thereby achieve a greater height and thus better wind accessibility.

For larger heights of such tower structures, it is necessary to increase the tower cross-section, as only then the required stability and buckling security can be achieved. Usually, such towers are created from circular-section tower-shaped tower segments, placed one above the other and connected to each other. Due to the usual bridge height in Germany, very large tower cross sections made of one-piece pipe sections or pipe segments can no longer be realized.

This makes it necessary, in order to comply with the passage height, such, very wide towers with more than 4.5 m diameter at the foot of partial shells, d. H. Ring segments to form a complete ring and - if necessary - several of these rings on top of each other.

In principle, it is known to create such so-called longitudinally oriented shells and to assemble these shells at the installation site to form a tube. It has been found, however, that the precision is so bad and the tolerances are so great that the assembly is very often delayed and unnecessarily difficult. In addition, known shell constructions are not so stable that they would be suitable for large tower tubular tower structures.

In addition, it is known to provide longitudinally oriented shells, in which multiply formed and in particular deep-drawn flanges, which are directed to the tower interior and extend substantially axially, are present. These flanges should provide a positive connection between the longitudinally oriented shells in the radial direction in the manner of a tongue and groove principle, but also ensure such in the axial direction. For this purpose, the sheets must be deformed in several axes, which is only possible by deep drawing. This could be found to be disadvantageous that the required precision in order to be able to assemble these towers at all, is only achieved if relatively thin sheets are used. In order to bring about a stabilization here, these longitudinally oriented shells are designed as double wall shells, which, however, has a considerably higher design complexity and also requires reworking.

The tubular tower structure with the door construction is made of pipe segments, which are made of longitudinally oriented shells, so that the tubular tower structure in partial lengths that are still transportable or, at a still transportable length, built in its full length.

The longitudinal or vertical edges of the shells are formed with an oversize relative to the width of the shell (or the partial circumference of a tube segment effected thereby). This oversize becomes simple radially inward or radially outward, i. H. not repeatedly or intrinsically deformed, folded and forms a flat, straight connection flange for connection with adjacent shells to produce a pipe or pipe segment.

The edge angle of the respective radially inwardly or radially outwardly facing flange of the respectively directly adjacent folded flat portion of the shell outer wall depends of course on the number of shells from which the entire circular tower cross section is created.

Radial hereby means perpendicular to the circumference of the tube body composed of the shells.

Other pipe segments can be placed on top and welded to horizontal edges until a pipe section or a complete tubular tower structure is formed. Alternatively, a connection can be made via horizontal annular flanges.

In the folded flanges the necessary holes for the insertion of bolts and screwing the flanges of adjacent shells are introduced, for example by drilling or burning, especially with laser.

The shells are then transported to the construction site and assembled there according to a tubular tower structure and interconnected through the flanges.

The invention will be explained by way of example with reference to a drawing. It shows:

1 : Tubular tower structure comprising a lower and an upper tube segment with shells and a door construction according to the invention;

2 : a modular door shell of a tubular tower construction according to 1 ;

3 : the narrow partial shell from the foot area of the door shell;

4 : another partial shell from the door shell;

5 : the narrow partial shell of the door shell with flanges;

6 : the door part shell.

A tubular tower construction 1 In particular, it is a substructure tower for existing wind turbine towers and has a head area 2 on which another tubular tower structure and in particular a wind turbine tower can be placed.

In addition, the tubular tower structure according to the invention has 1 a foot area 3 with which the tubular tower structure can be arranged on a foundation.

The possible diameters of the tubular tower structure in the foot area are 7 m to 8 m, but can also be significantly higher.

The diameter of the tubular tower structure 1 in the head area 2 is determined by the diameter of an erected tubular tower structure, in particular wind energy tower, and is usually 4.3 m, but may optionally be above or below.

The tubular tower construction 1 is here from at least one pipe segment 4 or from a plurality of axially consecutive pipe segments 4 educated.

Because the individual pipe segments 4 have a diameter that is greater than a pipe diameter, the logistically still be able to handle, so transportable would be (bridge height, road width), are the pipe segments 4 dismantled or assembled formed. This is every pipe segment 4 from a plurality of bowls 7 educated.

A bowl 7 extends over a partial circumference of the pipe segment 4 and over the axial length of the tube segment 4 , so by arranging several bowls 7 in the circumferential direction a pipe segment 4 is trained.

The bowls 7 are thus in cross-section as ring segments with a ring-segment-shaped curved lateral surface 8th formed and thereby have axially extending longitudinal edges 9 and horizontally extending end edges 10 ,

The lateral surface 8th the shells 7 have a circular segment shape.

From the long edges 9 extend integrally from the lateral surface 8th to the tube interior or tube outer from the lateral surface 8th inwardly or outwardly bent radially extending longitudinal flanges 11 , The longitudinal flanges 11 in this case have a plurality of successive holes in the longitudinal direction 12 or passages 12 for connecting the longitudinal flanges 11 neighboring shells 7 together.

The longitudinal flanges are with a respective axial end edge 11a one piece axially from the axial end edges 10 the Bowl 7 spaced apart, for example with a step 11b ,

Due to the material thickness and the strong bending inwards, have the longitudinal flanges 11 to the lateral surface 8th the Bowl 7 a Abkantradius 11c ,

The bowls 7 are preferably formed of steel and have a thickness suitable for use as a substructure tower for existing wind turbine tower constructions of more than 26 mm, in particular more than 40 mm to 100 mm.

To a plurality of pipe segments 4 to be able to arrange each other, or the lowest pipe segment 4 to arrange on a foundation, possess the respective shells 7 the pipe segments 4 along her frontal edges 10 mounted on joint and in particular welded, in cross-section L-shaped horizontal flanges 13 , As a result, each one in the assembled state lower shell foot 30 and a top shell in the assembled state 31 educated.

The horizontal flanges 13 each form a corresponding ring segment of a length, the width of a shell 7 over its lateral surface 8th including the strength of the longitudinal flanges 11 equivalent. This causes the horizontal flanges 13 the respective shells 7 after assembling the pipe segment 4 form a closed ring, with the abutting edges 14 the horizontal flanges 13 clash ( 4 ).

To a pipe segment 4 form a corresponding, a plurality of shells 7 , z. B. eight trays 7 , with a given width over its lateral surface 8th and the corresponding longitudinal flanges 11 arranged together, with the holes 12 penetrated by corresponding connection means and the flanges are interconnected.

In a further advantageous embodiment, the tubular tower structure as a whole is substantially conical. At one of the foot area 3 to the head area 2 continuously tapered and thus conical tubular tower construction 1 are accordingly also the individual pipe segments 4 tapered, so that their diameter of a Rohrsegmentfußbereich 5 to a tube segment header area 6 decreases, leaving each pipe segment 4 forming a truncated cone. Accordingly, the shells 7 then formed as truncated cone segments.

Accordingly, the shells 7 also in a foot area 30 wider and in a head area 31 narrow, leaving the lateral surfaces 8th conical pipe segments 4 and an overall conical tower ( 2 ).

Here, the tubular tower construction or can different pipe segments 4a . 4b of the tubular tower structure made of differently shaped partial shells 7a . 7b . 70 . 71 . 72 be educated.

According to the invention, in a region in which a door is to be provided in the substructure, a modular construction is made, wherein a shell 7 modular in this area from a first narrow part shell section 70 is formed, on which a door section 71 is axially mounted, wherein the door section 71 essentially the cross section of a shell 7 owns, however, a door opening 71a is provided.

Axial hereon is a partial shell 72 arranged, whereby the partial shell 72 axially by the length of a partial shell 7a , reduced by the height of the section 70 and the door section 71 extends, and optionally a partial shell 7b axially connected.

The narrow part shell section 70 which the door section 71 from the foot area 3 or the connection to a foundation spaced, has a height which is approximately the inner height of a introduced into the tower floor and / or a bedding from the outside, so that the door or the door section 71 can be initially omitted in the construction of the tower and entry into the tower interior to the ground with a significantly larger input cross section is made possible, so that large installations (elevator, etc.) can be introduced.

The screwed and provided with flat, straight flanges construction can be a door section 71 taken out or used at any time.

LIST OF REFERENCE NUMBERS

1

Tubular tower building

2

head area

3

footer

4

pipe segment

4a

lower pipe segment

4b

Upper pipe segment

5

Rohrsegmentfußbereich

6

Pipe segment header area

7

Bowl

7a

partial shell

7b

partial shell

8th

lateral surface

8a

flat surface

8b

Abkantungskante

9

longitudinal edge

10

front edge

11

longitudinal flange

11a

front edge

11b

step

11c

folding radius

11d

Free rooms

12

Bore / passage opening

13

horizontal flange

14

impact edge

15

torsion

30

Frame foot / foot area

31

Shell head / head area

60

flange

70

Part shell section

71

door section

71a

doorway

72

partial shell

80

truncated cone

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2011/092235 A2 [0004]
• DE 102010039796 A1 [0005]
• WO 2010/121630 A2 [0006]
• DE 102009058124 B4 [0007]
• DE 102011011603 A1 [0008]
• DE 20321897 U1 [0009]
• DE 102011001250 A1 [0010]
• DE 102011077428 A1 [0011]
• DE 112010005382 T5 [0012]
• DE 102013002469 A1 [0013]
• KR 10-1242505 [0014]
• DE 60317372 T2 [0015]
• US 2012/0137620 A1 [0016]
• EP 2282051 A2 [0017]
• EP 2388479 A1 [0018]
• EP 2188467 B1 [0019]

Claims (4)

Door arrangement for a tubular tower construction, characterized in that the door arrangement comprises a door section ( 71 ), wherein the door section ( 71 ) in the cross section of a shell ( 7 ) of a tubular tower structure ( 1 ) and with a door opening ( 71a ), wherein the door arrangement at least the door section ( 71 ), wherein the door section ( 71 ) a partial shell of a shell ( 7 ) of a tubular tower structure ( 1 ), wherein axially to the door section ( 71 ) then a partial shell ( 72 ) is arranged, wherein the partial shell ( 72 ) axially about the length of a partial shell ( 7a ), reduced by at least the height of the door section ( 71 ) extends axially. Door arrangement according to claim 1, characterized in that axially the partial shell ( 72 ) opposite one another in a foot region of the door section ( 71 ) a narrow shell section ( 70 ), the narrow section (FIG. 70 ), the door section ( 71 ) and the partial shell ( 72 ) together the length of a partial shell ( 7a ) of the tubular tower structure ( 1 ) or the corresponding pipe segment ( 4a ) train. Door arrangement according to claim 1 or 2, characterized in that the door section ( 71 ) two radial flanges ( 11 ), with which the door section ( 71 ) on adjacent shells ( 7 ) of the tubular tower structure ( 1 ) is releasably attachable, wherein the door section ( 71 ) also at lower and upper peripheral or front edges ( 10 ) Flanges ( 13 ) and an optionally existing narrow partial shell section ( 70 ) and the partial shell ( 72 ) corresponding flanges at their front edges ( 10 ), so that the door section ( 71 ) between the sub-shell section ( 70 ) and the partial shell ( 72 ) on the one hand and adjacent shells ( 7 ) is detachably screwed. Door arrangement according to one of claims 1 to 3, characterized in that the narrow partial shell section ( 70 ), which the door section ( 71 ) of the footer ( 3 ) or the connection to a foundation spaced, has a height which is approximately the inner height of a to be introduced into a tubular tower structure floor, so that the door or the door section ( 71 ) can be recessed in the construction of the tower and entering the tower interior to the ground with a much larger input cross section, namely the cross section of a shell ( 7 ), is possible.

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