NZ626572B2 - Telescopic rotor blade and telescopic tower, wind turbine, and wind farm - Google Patents
Telescopic rotor blade and telescopic tower, wind turbine, and wind farm Download PDFInfo
- Publication number
- NZ626572B2 NZ626572B2 NZ626572A NZ62657212A NZ626572B2 NZ 626572 B2 NZ626572 B2 NZ 626572B2 NZ 626572 A NZ626572 A NZ 626572A NZ 62657212 A NZ62657212 A NZ 62657212A NZ 626572 B2 NZ626572 B2 NZ 626572B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- rotor blade
- tower
- section
- control device
- sections
- Prior art date
Links
- 238000013016 damping Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005339 levitation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/18—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
- E04H12/182—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic telescopic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0236—Adjusting aerodynamic properties of the blades by changing the active surface of the wind engaging parts, e.g. reefing or furling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/202—Rotors with adjustable area of intercepted fluid
- F05B2240/2021—Rotors with adjustable area of intercepted fluid by means of telescoping blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
- F05B2240/91—Mounting on supporting structures or systems on a stationary structure
- F05B2240/915—Mounting on supporting structures or systems on a stationary structure which is vertically adjustable
- F05B2240/9151—Mounting on supporting structures or systems on a stationary structure which is vertically adjustable telescopically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/10—Telescoping systems
- F16B7/105—Telescoping systems locking in discrete positions, e.g. in extreme extended position
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Abstract
Disclosed is a rotor blade (101) with a first rotor blade section (103) and a second rotor blade section (105). The first rotor blade section and the second rotor blade section are designed to be displaceable relative to each other by means of a control device (109, 113), so a telescopic rotor blade is formed and the rotor blade sections can adopt a minimum position, an intermediate position or a maximum position when displaced. The rotor blade includes a reset device (115), which is setup in such a manner that in case of a functional limitation of the control device, the rotor blade sections take up the minimum position. is formed and the rotor blade sections can adopt a minimum position, an intermediate position or a maximum position when displaced. The rotor blade includes a reset device (115), which is setup in such a manner that in case of a functional limitation of the control device, the rotor blade sections take up the minimum position.
Description
Telescopic rotor blade and opic tower, wind
e and wind farm
A rotor blade with a first rotor blade section
and a second. rotor blade section, wherein the first
rotor blade section and the second rotor blade section
are designed to be movable relative to each other by
means of a control device, so that more specifically a
opic rotor blade is formed and the rotor blade
sections can adopt a minimum position, an intermediate
position or a maximum position when displaced, and a
tower, more specifically a Mdnd turbine tower with a
first tower section and a second tower section, wherein
the first tower section and the second tower section
are designed to be movable relative to each other, so
that more specifically a telescopic tower is formed and
that the tower sections can adopt a minimum position,
an intermediate position or a maximum on when
displaced, a wind turbine and a wind farm.
[02] At present, the prior art for re areas are
wind turbines with a hub height of 100 m. In order to
achieve a higher energy yield, the rotor area and/or
the hub height would have to be increased. Modifying
the hub height is more specifically advantageous
because the wind acting on the rotor blades is
distributed in a more nous (laminar) manner.
The current limit to the hub height of today’s
wind energy turbines is substantially determined by
crane technology and crane length.
3O [04] In addition, rotor blades with a changeable rotor
blade length are known from the prior art. These rotor
blades are generally' referred. to as telescopic rotor
blades. More specifically, the modifiable length of the
rotor blades allows adapting the energy yield in a
controllable and/or adjustable manner.
The development of wind turbines over the last
decades has shown that a higher wind yield or energy
yield comes along with higher hub heights and/or rotor
blade diameters. This meant that wind es had to
be dimensioned for respectively higher hub heights or
greater rotor blade diameters. This resulted in higher
costs and greater expenses with regard to materials
such, as foundations or supporting elements. To date,
the rule was “higher yield equals tional or over—
proportional dimensions of the turbine with regard to
the expected (extreme) .
In. order‘ to obtain. the certification. for a xNind
turbine, it must be able to resist extreme loads, for
e a so—called 50—year wind event. As a
consequence, wind turbines with telescopic rotor blades
and fixed length. rotor blades must be designed with
regard to safety requirements in such a manner that a
50—year wind event will not cause damage to the wind
turbine. This implies enormous material—related and
safety—related expenses, which se the costs for
such a wind turbine.
The problem underlying the invention is to improve
the prior art.
The m is solved by a rotor blade with a
first rotor blade section and a second rotor blade
section, wherein the first rotor blade section and the
second rotor blade section are designed to be e
relative to each other by means of a control device, so
that in particular a telescopic rotor blade is formed
and the rotor blade ns can adopt a minimum
position, an intermediate position or a maximum
position when displaced, wherein the rotor blade has a
reset device, which is setup in such a manner that in
case of functional limitation. of the l device,
the rotor blade sections take up the minimum position.
A rotor blade can thus be ed, which in an
emergency case always remains or is brought into a
minimum position. Thus the safety requirements can be
adapted to the minimum length instead of the maximum
length.
Thereby, the rule according to which r
yield equals proportional or roportional
dimensions of the turbine with regard to the expected
(extreme) loads” can be broken, resulting in a
“decoupling of the yield from the dimensions of the
turbine with regard to the expected (extreme) loads”.
Only then can n wind turbines be produced
economically.
The following terms must be explained:
A “rotor blade section” is a (component) part
of the rotor blade. The rotor blade sections are
disposed. so as to be “displaceable” relative 'to each
other, so that a telescopic rotor blade is provided,
whose contact surface with the wind can be modified in
an adjustable manner. More specifically, a rotor blade
section is partially immersible in the other rotor
blade section, so that a sufficiently stable connection
can be provided.
The displacement of the rotor blade sections
relative to each other is d out by means of a
“control device”. This control device applies a
rotational or translational movement to one of the
rotor blade sections. In a simple embodiment, this is
carried out by means of a pinion that engages with a
rack. The control device can also be implemented by a
roller drive, such as those used in an elevator.
However, technologies such as those used in a magnetic
levitation method can also be used.
When displacing the rotor blade sections,
substantially‘ three conditions, or respectively" three
positions of the rotor blade sections relative to each
other can be set.
[015] In a “minimum position”, the rotor blade is at
its minimum length. A further reduction of the length
of the rotor blade is not able.
In a “maximum on”, the rotor blade is at
its maximum length. A further displacement for
lengthening the rotor blade cannot be implemented
t destroying it.
In the present, “intermediate position” refers
to all positions between the m position and the
maximum on.
[018] The term “functional limitation of the control
device” refers all malfunctions and limitations of the
control device. This can include the complete breakdown
of the control device as well as a merely reduced
output of the (control) motor.
[019] The “reset device” builds up a force between
the individual rotor blade settings, which ensures from
a technical oint that the rotor blade sections
will move into the minimum position. In one ment,
the device is a tension spring, which is fastened at
each respective spring end to both rotor blade
sections. Other alternatives, such as associated
electromagnets for example can also form the reset
device.
In another embodiment, the reset device has a
spring t with a spring force.
[021] By‘ means of this mechanical reset device a
return to a minimum position can be ensured
independently from a possible power supply.
In order to ensure that the reset device will
securely displace the rotor blades into the minimum
position independently from the onal speed of the
rotor blades, the spring force can be greater than a
(maximum) centrifugal force of EM] outer blade section
and/or a force of the control device.
In another embodiment, the control device
includes a safety device.
Thus, the rotor blade sections can be locked
relative to each other in the minimum position, in the
intermediate position and in the maximum position.
The “locking ” can have electrical and
mechanical locking elements. An electrical locking
element comprises an able electromagnet and a
mechanical locking element comprises a bolt for
example, which can be slid into a bolt opening. It is
particularly advantageous that the locking elements
themselves can also be controlled in a fail—safe
manner, so that in case of a power breakdown the
locking device is automatically released. This can in
turn be implemented by means of a reset device that is
assigned to the locking device.
In order to ensure that the reset device moves
the rotor blade into a Hdnimum position, the control
device can have a safety , which releases a rotor
blade section or several rotor blade sections in case
it must be secured.
“Release” more specifically means that the
reset device can move the rotor blade ns in such
a manner that the rotor blade sections take up the
m position. In a simple embodiment, the locking
devices are released or a motor, which drives the
, is switched into a free—running mode or
mechanically folded away — for example as a result of
magnets — so that the motor does not apply a force to
the reset device.
In r ment the rotor blade has
other rotor blade sections and/or other control devices
and/or other reset devices.
Thus a rotor blade can be provided, which is
multiply extendable with respectively separate control
devices and reset devices.
In another aspect of the invention, the
problem is solved by a tower, more specifically a wind
turbine tower, with a first tower section and second
tower section, wherein the first tower section and the
second tower section are configured to be displaceable
relative to each other by means of a control device, so
that more specifically a telescopic tower is formed and
that the tower sections can adopt a minimum position,
an intermediate on or a maximum position. when
displaced, a reset device being provided which is setup
in such a manner that in case of a function limitation
of the control device, the tower sections take up the
minimum position.
Thus a tower can be provided that can be
securely moved into a minimum on even during an
extreme event, such as a 50—year wind event for
example. By taking up this minimum position, the energy
capture of a wind turbine can be reduced.
Here too, the previously established rule
“higher yield equals proportional or over—proportional
dimensions of the turbine with regard to the expected
(extreme) loads” can thus be broken resulting in a
“decoupling of the yield from the dimensions of the
turbine with regard to the expected me) loads”.
Only then can certain wind turbines be produced
economically.
In addition, this tower allows providing wind
turbines, more specifically for offshore areas, with a
significantly increased hub height. Currently, hub
heights according' to the prior art are limited. to a
height of ca. 100 m. However, with the present
logy, an effective hub height of e.g. 300 m can
be implemented. Ergo, considerably more efficient
(offshore) wind es can be provided by means of
t assembly technologies.
[O34] Regarding the definitions, the previously
given tions are referred to, which also apply to
the tower in an adapted form.
However, it must be taken into account here
that the reset device more specifically uses y so
that spring elements, for example, which would pull the
individual tower sections together, can. be dispensed
with.
In a related embodiment, the tower can have a
brake device, which slows down and/or cushions a tower
n on its way to the minimum on. Thus it can
be ted that an upper tower section moves
unchecked into a lower tower section.
The “brake device” can be configured for
example as a gas pressure spring' or an oil pressure
spring with an end position damping arrangement.
In order to reduce the energy expense for a
displacement of the tower sections relative to each
other and to implement a braking effect, the braking
device can have a rweight or a damping element.
In order to lock the tower sections relative
to each other, the control device can have a “locking
device”.
Regarding the locking device, reference is
made to the above explanations, which also apply to the
tower in an adapted form.
In the present, in order to ensure that the
tower sections can be moved to the m position at
any time, the control device can have a safety device,
which releases a tower section or several tower
sections in case they need to be secured.
Here too, reference is made to the previously
given definitions regarding the safety device, which
also apply to the tower in an adapted form.
In r embodiment, the tower has other
tower sections and/or other control devices and/or
other reset devices.
Thus a wind turbine tower can be provided,
which is extendable by more than twice its basic length
and where a return to the respective minimum positions
is ensured in an emergency case.
In another aspect of the invention, the
problem is solved by a wind turbine, more ically
an offshore wind turbine, which has a previously
described tower and/or a usly described rotor
blade.
Thus a wind turbine can be provided more
ically in offshore areas, whose hub height is
much higher than 100 m and which can adjustably absorb
a corresponding energy yield from the wind acting on
it. In addition, the wind turbine can control and/or
regulate the energy capture of the generator by
determining the height of the tower or the longitudinal
extension of the rotor blades.
In another aspect of the invention, the
problem can be solved by a wind farm, more specifically
an offshore wind farm, which has a previously described
wind turbine.
More ically, effects appearing ill wind
farms can thus be minimized. For example, wind turbines
standing in a row in the direction of the wind can be
moved in such a manner that the first wind turbine in
the direction ,of the wind is operated at a minimum
height and a wind turbine standing behind it is
operated at a maximum height, so that possible
turbulences caused. by the first wind turbine do not
impact or only slightly impact the wind turbine
standing behind it.
Nevertheless both. wind turbines can produce
substantially' the same energy' yield, since the first
wind turbine in the direction of the wind for e
is operated with rotor blades extended to a maximum
position and the wind. turbine standing behind. it is
operated with rotor blades extended to a minimum
In the following, the invention is described
in more detail based on exemplary embodiments. In the
drawings:
Figure 1 shows a tic representation of a n
of a telescopic rotor blade,
Figure 2 shows a schematic lateral entation of a
wind turbine with a hub height of 190 m and
Figure 3 shows a schematic lateral View of a wind
turbine with a hub height of 100 m.
A telescopic rotor blade 101 has a first rotor
blade section 103 and a second rotor blade section 105.
The first rotor blade section 103 is flangeable to a
hub (not shown) of a wind turbine by means of a rotor
blade flange 111. The second rotor blade section 105
has a pin 107, which is guided in the first rotor blade
section 103.
A spring 115 has a first spring attachment 117, which is connected to the first rotor
blade section 103 and a second spring attachment 119, which is
connected to the pin 107
and thus to the second rotor blade section 105. in addition, a rack 109 is mounted on the
pin 107. A pinion 113 engages with the rack 109.
The pinion 113 is firmly connected to the first rotor blade section 103 via
a pinion
spring 121. in addition, a l motor (not shown) is disposed
on the onal axis (not
shown) of the pinion 113.
[054] In addition, the pin 107 has several electromagnets 127 disposed
next to each other.
A permanently magnetic bolt 123, which is firmly connected to the first rotor blade section
103 via a bolt spring 125, is assigned to these electromagnets.
in general, the second rotor blade section 105 is moved into
an operating position by
the control motor and the pinion 113 and the assigned rack
109 against the spring force of
the rotor blade spring 115.
in order to move the second rotor blade section 105
into the minimum position of the
telescopic rotor blade 101, the pin 107 is completely admitted into the first rotor blade
section 103.
Ensuring that the m position is taken up can be achieved tively
alternately as follows:
[058] The control motor (not shown) connected to the
pinion is switched into an idle
on. Thereby the rotor blade spring 115 pulls the second rotor blade section 105
thus the spring 107 completely into the first rotor
blade section 103.
In addition, by switching off an electro magnet, the pinion
113 can be “folded away”
by the spring 121 under the action of the pinion spring 121, so that the pinion 113 has
active contact with the rack 109. In this case also, the rotor blade spring 115 pulls the
second rotor blade n 105 together with the pin 107
entirely into the first rotor blade
section 103.
By means of the bolt 123 the pin 107 can be fastened to the first rotor blade section
103. To this end, one of the electromagnets 127 is actuated
in such a manner that the bolt
123 is pulled into a locking seat (not shown).
In case the telescopic rotor blade 101 must be moved into
the minimum position, the
power supply of the electromagnets is interrupted and the bolt spring 125 pulls the bolt
out of the locking seat so that the second rotor blade section
105 with its assigned pin 1 O7 is
free and the second rotor blade section 105 is entirely
admitted in the first rotor blade section
1 O3.
The operation of a telescopic tower is explained in
more detail based on a wind
turbine 201.
[063] A wind turbine 201 has a telescopic tower 240
with a nacelle 231 disposed at the top
and rotor blades 101 flange-mounted onto
a hub.
The telescopic tower 240 includes
a lower tower n 241 and
an assigned upper
tower section 243, n the
upper tower n 243 is at least partially retractable inside
the lower tower section 241. The lower
tower section 241 and the
upper tower
section 243 are ceable relative to each other by
way of a tower drive 251, which is configured like an
elevator drive. In addition, a counterweight 255
attached to a retaining cable 253 is provided.
[065] The counterweight 255 has a. somewhat lesser
mass than the upper tower section 243 including the
nacelle 231 and the telescopic rotor blades 101, so
that a slow displacement of the upper tower section 243
with its superstructures is implementable.
[066] As a rule, in. order‘ to optimize the energy
yield, the wind turbine is operated with an extended
upper tower section 243. A substantial adjustment is
d out by way of the telescopic rotor blades 101.
In case the wind turbine must be moved into a
minimum position, the tower drive 251 is ed into
an idle position. In this case, the counterweight 255
is lifted and the upper tower section 243 is lowered
into the lower tower section 241. In the present, the
safety isms of the telescopic rotor blade can
also be used in an analogous manner for the two tower
sections 243, 241.
List of reference numbers
101 telescopic rotor blade
103 first rotor blade section
105 second rotor blade section
107 pin
109 rack
111 rotor blade flange
113 pinion
115 rotor blade spring
117 first spring connection
119 second spring connection
121 pinion spring
123 bolt
125 spring
127 electromagnet
201 wind turbine
231 nacelle
240 tower
241 lower tower section
243 upper tower n
251 tower drive
253 retaining cable
250 counterweight
Claims (18)
1. A rotor blade with a first rotor blade section and a second rotor blade section, wherein the first rotor blade section and the second rotor blade section are designed 5 to be displaceable relative to each other by means of a control device, so that a telescopic rotor blade is formed and the rotor blade sections can adopt a minimum position, an intermediate position or a m position when displaced, and further comprising a reset device, which is setup in such a manner that in case of a functional limitation of the control device, the rotor blade sections take up the 10 minimum position.
2. The rotor blade according to claim 1, n the reset device has a spring element with a spring force. 15
3. The rotor blade according to claim 2, wherein the spring force is r than a centrifugal force of an outer rotor blade section and/or the force of the control device.
4. The rotor blade according to anyone of the previous claims, wherein the control device comprises a locking .
5. The rotor blade according to anyone of the previous claims, wherein the control device has a safety device, which releases a rotor blade n or several rotor blade sections in case they need to be secured.
6. The rotor blade according to any one of the previous claims, comprising other rotor blade sections. 5
7. The rotor blade according to any one of the previous claims including other control devices.
8. The rotor blade according to any one of the previous claims ing other reset devices.
9. A tower, with a first tower section and a section tower section, wherein the first tower section and the second tower section are designed to be movable relative to each other by means of a control device, so that a telescopic tower is formed and that the tower sections can adopt a minimum position, an intermediate on or a maximum 15 position when displaced, and r including a reset device, which is ured such a manner that in case of a functional limitation of the control device, the tower sections take up the minimum position.
10. The tower according to claim 9, further including a braking device, which slows down 20 and/or ns a tower section on its way to the minimum position.
11. The tower according to claim 10, wherein the braking device has a countenNeight and/or a damping element.
12. The tower according to any one of claims 9 to 11, wherein the control device has a locking device. 5
13. The tower according to any one of claims 9 to 12, wherein the control device has a safety device, which releases a tower section or several tower sections in case they need to be d.
14. The tower ing to any one of claims 9 to 13, including other tower sections.
15. The tower according to any one of claims 9 to 14 including other control devices.
16. The tower according to any one of claims 9 to 15 including other reset devices. 15
17. A wind turbine having a tower according to any one of the claims 9 to 16 and/or a rotor blade according to any one of the claims 1 to 8.
18. A wind farm, having a wind turbine according to claim WO 97847 WO 97847
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011122504.1 | 2011-12-29 | ||
| DE102011122504A DE102011122504A1 (en) | 2011-12-29 | 2011-12-29 | Wind turbine |
| PCT/DE2012/100402 WO2013097847A2 (en) | 2011-12-29 | 2012-12-28 | Telescopic rotor blade and telescopic tower, wind turbine, and wind farm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ626572A NZ626572A (en) | 2015-05-29 |
| NZ626572B2 true NZ626572B2 (en) | 2015-09-01 |
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