DE202019104409U1 - An obstacle fire device for a rotor blade of a wind turbine, rotor blade with such an obstacle fire device and wind turbine - Google Patents

Abstract

An obstacle fire device (100) for a rotor blade (140) of a wind turbine (10)
a luminous section (110) with luminous means (111), formed with respect to a longitudinal axis (101) of the obstacle firing device (100), with a radiation angle (112) of at least 120 °, in particular of at least 140 °, preferably of at least 160 °,
- An inner portion (130), a fastening device and a longitudinal stop (131), and
a cylindrical shape-like shaft portion (120) connecting the luminous portion (110) and the inner portion (130) with a maximum shaft diameter (121), wherein a maximum outer diameter (114) of the luminous portion (110) is not greater than the shaft diameter (121) wherein the obstruction fire device (100) is designed to
to be able to be inserted with the luminous portion (110) from an inner side (145) of the rotor blade (140) through a through-bore (160) in a blade shell (146, 147) of the rotor blade (140),
- By means of the longitudinal stop (131) in a defined mounting position on the inside (145) at least in the longitudinal direction (101) to be fixed, and
- By means of the fastening means on the leaf shells (146, 147) to be firmly but detachably fastened.

Description

TECHNICAL AREA

The present subject matter relates generally to wind turbines, and more particularly to an obstacle firing device for a rotor blade of a wind turbine.

BACKGROUND

Wind energy is one of the cleanest and most environmentally friendly sources of energy available, and has become increasingly important. For example, a modern wind turbine includes a tower, a generator, a transmission, a nacelle, and one or more rotor blades. The rotor blades convert kinetic energy from the wind into rotational energy. The generator converts the mechanical energy into electrical energy that can be fed into a utility grid.

Wind turbines can pose a threat to air traffic due to their size and height. In particular, aircraft are at risk, which can run in a height range of wind turbines, these are, for example, rescue helicopters and / or aircraft of the armed forces.

In order to prevent a collision of aircraft with wind turbines, standards for the identification of wind turbines, for example the General Administrative Regulation for the Marking of Air Traffic Obstructions, have been established. Among other things, it regulates which lighting is required to visualize the wind turbine.

For very large wind turbines, it is necessary to provide obstruction fire on the rotor blades. However, this shows that this can lead to reduced operational capability of wind turbines, in particular due to necessary maintenance.

Accordingly, it may be an object of the present disclosure to provide an obstruction firing device, a rotor blade having such an obstruction firing device, and a wind turbine having such a rotor blade, thereby increasing the availability of the wind turbine.

DESCRIPTION

Aspects and advantages of the invention will be set forth in part in the description which follows, and may be obvious from the description, or may be learned by practice of the invention.

The above object is achieved by an obstruction fire device according to claim 1, a rotor blade with such an obstruction fire device according to claim 10 and / or by means of a wind turbine with such a rotor blade according to claim 16.

Such an obstacle fire device for a rotor blade of a wind turbine is composed, for example, of a luminous section, an adjoining shaft section and an adjoining inner section, the definition of sections not having to be understood as limiting, but also reproducing the structure of the structure.

The luminous portion may have a longitudinal axis, and an outer contour of the luminous portion may be rotationally symmetrical with respect to this longitudinal axis, for example cylindrical in shape and have a maximum outer diameter.

Furthermore, the lighting section is provided with lighting means, in particular LED lighting means. These are arranged in the luminous portion, and the luminous portion is designed with a correspondingly transparent designed area, so that a radiation angle of the lamps is at least 120 °, in particular 140 °, preferably at least 160 °. Preferably, the arrangement is chosen such that the emission angle is symmetrical to the longitudinal axis, and thus a maximum inclination beam path with respect to the longitudinal axis with at least 60 °, in particular 70 ° and preferably at least 80 ° inclined.

According to one embodiment, the outer diameter of the luminous portion is not greater than a maximum shaft diameter of the shaft portion. In particular, the contour of the cross section of the luminous portion is at no point larger than a largest contour of the cross section of the shaft portion. For example, the cross section of the luminous portion can always find space in the cross section of the shaft portion and / or fill it exactly. This constellation of the cross-sections causes the luminous portion can always be pushed through a recess which either the contour of the shaft portion reproduces or is greater than the contour of the shaft portion.

The inner portion of the obstruction fire device joins, is connected to the shaft portion in the longitudinal direction, and is equipped with a fastening device and a longitudinal stop.

The obstacle firing device is designed and technically configured such that it is suitable for being able to be guided with the luminous section in front from an inner side of the rotor blade through a through-hole in a blade shell of the rotor blade. Farther allows the configuration, in particular the configuration of the inner portion, that the obstacle device fire in a defined mounting position on the inside of the sheet tray, at least in the longitudinal direction, can be set. Furthermore, the obstacle firing device by means of the fastening device to the sheet shell can be fixed but soluble. Alternatively formulated: The conception of the obstacle firing device, in particular the luminous section, the shaft section, and the inner section ensure that the obstruction firing device can be inserted from the inside through the through-hole in the blade shell, so that the luminous section protrudes on an outer side of the rotor blade. The obstacle firing device can be plugged in so far through the blade shell until the longitudinal stop, for example, formed on the inner portion or at a transition between the inner portion and shaft portion, on a corresponding counter-stop, for example, on the surface of the blade inside.

The effect of the invention is that, for the first time, a simple and maintenance-friendly luminous firing of rotor blades of wind turbines is achieved. For one, the individual obstacle fire device can be exchanged in the simplest way - for example in the event of destruction by a lightning strike - by having maintenance personnel with an obstacle fire device intended for exchange preferably inside the hub through the hub into the affected rotor blade, advancing therein until the obstacle fire device to be replaced releasing fastening means, pulling the obstruction fire device inwardly out of the blade, and inserting the new obstacle fire device into the through hole from the inside and fixed by the fastening means.

On the other hand, the design of the obstacle firing device causes only a few to no conductive components of the luminous firing run on the outer surface of the rotor blade, and thus form less impact points for lightning. In particular, cables for supplying power to the obstacle firing device run in the interior of the rotor blade. Thus, it is achieved that on the one hand rotor blades are less affected by lightning strikes, and on the other hand caused by downtime can be reduced.

According to one embodiment, the luminous portion, in particular the luminous means, is designed such that a nominal luminous intensity of at least 10 candela (Cd), in particular of at least 30 Cd, particularly preferably of at least 50 Cd is achieved. Optionally, a light intensity of at least 100 Cd can be achieved.

The shaft section and / or a section of the shaft section in the longitudinal direction between the illumination section and the longitudinal stop preferably has a length of at least 10 mm, in particular at least 20 mm, preferably at least 30 mm and / or at most 120 mm, in particular at most 100 mm, preferably at most 90 mm on.

According to one embodiment, the obstruction fire device has spacing means which, together with the longitudinal stop, can cause an obstacle fire device with a specific shaft length to be adapted to through holes with different hole depths. Rotor blades of wind turbine have different blade thicknesses at different locations, so that through holes for obstacle firing device have different hole depths depending on the location of the arrangement.

Accordingly, the support means may serve to adapt a shaft portion that is too long to the bore depth of the throughbore.

Alternatively, it is conceivable to equip the obstacle device with a longitudinal stop adjustable in the longitudinal direction, so that an adaptation to the respective hole depth for a respective through hole can be made.

According to one embodiment, an adjustable longitudinal section may be formed together with the fastening device, so that a flexible attachment of the identical type of obstacle fire device at different locations in the rotor blade is possible.

In general, it can be summarized that according to an embodiment the obstacle firing device can be equipped with adaptation means, wherein the adaptation means are designed and designed in such a way, in particular together with the longitudinal stop and / or the fastening device, so that a flexible arrangement of the obstacle firing device to different through holes with different hole depth is possible, in particular so that the luminous portion of an obstacle device protrudes in always the same way and / or always with the same geometry on an outer side of the rotor blade.

According to an additional or alternative embodiment, an adaptation to different bore depths of through holes can be achieved by a length-adjustable shaft portion. For example, it is conceivable that the transition of shaft portion and inner portion is designed to be displaceable, so that the longitudinal stop at different Longitudinal positions of the shaft portion is effective. In particular, it is conceivable to provide the shaft portion with a thread, which is screwed into the inner portion. Alternatively, an outer nut or equivalent fastening means may be applied to the shaft portion.

Accordingly, in the context of the invention is not absolutely necessary that the longitudinal stop is formed as a component belonging to the inner portion. Alternatively, the structuring division of the luminous portion, the shaft portion and the inner portion may be understood that the luminous portion is the portion of the beacon device protruding beyond the outer surface of the rotor blade, the shaft portion is the portion of the beacon device located inside the throughbore, and the inner portion is over one inner surface of the blade cup is in the interior of the rotor blade protruding portion of the beacon device.

According to one embodiment, the longitudinal stop is arranged on an inner surface of the inner portion and / or the inner surface acts as a longitudinal stop. In this case, the inner surface is arranged at least perpendicular to the longitudinal axis of the shaft portion, wherein an angle between a shaft outer surface and the inner surface is 80 ° to 100 °, in particular approximately 90 °. Thus, it is achieved in a simple manner that the obstruction fire device can be introduced into the through hole and bears against the inner surface of the inner portion of the inner surface of the rotor blade shell. Furthermore, thus, the number of moving parts is reduced. In particular, it is conceivable to implement such an embodiment of the longitudinal stop on the inner section in connection with a shaft section which can be adapted in the longitudinal direction, for example as described above.

According to one embodiment, the obstruction fire device may comprise a switching device which is equipped with switching means and / or sensor means cooperating therewith, so that the lighting means are activated and deactivated in dependence on a position of the rotor blade on the wind turbine.

For example, the sensor means may be formed as position sensors or angle sensors or as appropriately configured switches, so that the lighting means are actuated position-dependent.

In particular, the switching means and / or sensor means are arranged and designed such that the obstacle firing device is activated only in darkness and / or when the rotor blade is located in a region above a rotor blade axis of the rotor of the wind turbine.

According to one exemplary embodiment, sealing means are provided which are provided on the obstacle firing device, in particular on the shaft section, so that they seal an outer side of the rotor blade against an inner side of the rotor blade in cooperation with the through-bore through the blade shell of the rotor blade. The sealing means may be wholly or partly provided on the obstruction fire device and / or on the rotor blade.

Furthermore, a rotor blade for a wind turbine is disclosed, wherein the rotor blade has a blade root, a blade tip and at least two blade shells extending in the direction of a blade axis from the blade root to the blade tip. In this case, in at least one sheet shell, but preferably in both leaf shells obstacle firing device according to one of the above embodiments provided. In particular, the effective length of the shaft portion of the obstruction fire device is adapted to the bore depth of the throughbore in the blade shell.

According to one embodiment, the through-bore in the direction of the blade axis (longitudinal direction) is at least 10%, in particular at least 20%, preferably at least 30%, and / or at most 80%, in particular at most 70%, preferably at most 60% of a blade length of the rotor blade, and / or at least 7 m, in particular at least 10 m, preferably at least 12 m away from the blade root. Additionally or alternatively, the through-holes may be provided such that a distance from a through-hole to the blade tip is at least 50 m, in particular at least 65 m.

Additionally or alternatively, an embodiment is disclosed, wherein the throughbore, in the direction of a blade chord of the rotor blade, at least 10%, in particular at least 20%, preferably at least 30%, and / or at most 80%, in particular at most 70%, preferably at most 60% of Leaf chord away from a leaf leading edge and / or a blade trailing edge of the rotor blade is arranged.

According to a further embodiment, the through-bore is not arranged in the region of a belt of the rotor blade, in particular an upper belt of an upper blade shell and / or a lower belt of a lower blade shell of the rotor blade, and / or not in the region of a blade leading edge and / or a blade trailing edge.

Additionally or alternatively, a wind turbine is disclosed which comprises a tower, a nacelle rotatably mounted on the tower, a rotor having at least one rotor blade, wherein the rotor blade according to one or more of the preceding embodiments is formed.

The above-described embodiments can be arbitrarily, but in a meaningful way combined with each other, for example, different attachment means and longitudinal stops and / or different lengths shank sections in the design and design of obstruction firing device, of rotor blades with such obstacle firing device and wind turbines with such rotor blades are conceivable.

list of figures

The accompanying drawings illustrate embodiments and, together with the description, serve to explain the principles of the invention. The elements of the drawings are relative to one another and not necessarily to scale.

• 1 zeigt eine Windturbine,
• 2 verdeutlicht den Aufbau der Gondel der Windturbine gemäß 1,
• 3 ist ein Querschnitt durch eine Hindernisfeuervorrichtung, verbaut in einem Rotorblatt der Windturbine gemäß 1,
• 4 gibt eine Ansicht von vorne auf ein Rotorblatt für eine Windturbine gemäß 1 wieder,
• 5 zeigt das Rotorblatt gemäß 4 in einer Draufsicht, und
• 6 ist ein Querschnitt scheint sicher bis ich die Fig. noch welche gezeigt beschrieben durch das Rotorblatt gemäß 4 und 5.

Like reference numerals designate like or corresponding parts.

• 1 shows a wind turbine,
• 2 illustrates the structure of the nacelle of the wind turbine according to 1 .
• 3 is a cross section through an obstacle device mounted in a rotor blade of the wind turbine according to 1 .
• 4 gives a front view of a rotor blade for a wind turbine according to 1 again,
• 5 shows the rotor blade according to 4 in a plan view, and
• 6 is a cross section seems safe until I have the figures still described by the rotor blade according to 4 and 5 ,

DETAILED DESCRIPTION OF THE INVENTION

Reference will now be made in detail to the embodiments of the invention, one or more examples of which are illustrated in the figures. Each example is illustrative of, but not limited to, the invention.

As used herein, the term "rotor blade" represents a device that generates a reaction force by movement by a surrounding fluid. In particular, a rotor blade is an aerodynamic component, with the kinetic energy from moving air (wind) can be removed.

The term "wind turbine" is a device that converts kinetic wind energy into rotational energy, preferably to further transform it into electrical energy.

1 illustrates a perspective view of an embodiment of a wind turbine 10 according to the present disclosure. As shown, the wind turbine points 10 A tower 12 up, extending from a foundation 14 extends in height. On the tower 12 is a gondola 16 mounted, what a rotor 18 rotatable about an axis of rotation 30 is stored.

The rotor 18 includes a hub 20 and three at the hub 20 attached rotor blades 140 , wherein the rotor blades 140 around a leaf axis 141 rotatable on the hub 20 are attached. For example, the rotor includes 18 in the present embodiment, three rotor blades 140 , In an alternative embodiment, the rotor 18 however, more or less than three rotor blades 140 include. The hub 20 is rotatable with the generator 42 coupled inside the gondola 16 is positioned to generate electrical energy.

The attachment of a rotor blade 140 at the hub 20 is achieved by adding a leaf root 142 of the rotor blade 140 over a variety of rotor blade bolts with one on the hub 20 provided sheet storage 72 connected is. The leaf store 72 serves to make a relative rotation of the rotor blade 140 opposite the hub 20 around a leaf axis 141 to enable. The in the rotor blades 140 induced loads are transmitted through the blade bearing 72 on the hub 20 transfer.

According to one embodiment, the rotor blades 140 a length in the range of about 15 meters (m) to about 91 meters. Alternatively, the rotor blades 140 have any suitable length, which allows the wind turbine 10 as described here works. Other non-limiting examples of blade lengths are, for example, 47 m, 48 m, 51 m, 53 m or more.

In 1 it can be seen that the rotor blades 140 each with an obstacle device 100 are equipped, these and the designated through hole 160 at about 40% of the total leaf length 148 - starting from the leaf root 142 - are arranged.

When the wind comes from a wind direction 28 on rotor blades 140 meets the rotor becomes 18 around the axis of rotation 30 turned. Because the rotor blades 140 is rotated and subjected to centrifugal forces, these are exposed to different forces and moments.

In addition, a pitch of the rotor blades 140 ie an inclination angle of the rotor blades 140 in relation to the wind direction 28 , through a pitch system 32 be changed to the load and power of the wind turbine 10 to control. During operation of the wind turbine 10 can the pitch system 32 a pitch angle of the rotor blades 140 so change that the rotor blades 140 be moved to a flag position, so that at least one rotor blade 140 in relation to the wind direction 28 offers a minimal surface. This will reduce the speed of the rotor 18 and / or the stoppage of the rotor 18 achieved.

In an exemplary embodiment, a pitch angle of each rotor blade 140 individually controlled by a pitch control. Alternatively, the pitch angle for all rotor blades 140 be controlled simultaneously by the pitch control.

In addition, an azimuth system allows adjustment of the orientation of the nacelle 16 , and thus also the rotor 18 , according to the wind direction 28 , This will be the gondola 16 around the azimuth axis 38 rotates.

2 gives an exemplary view of the gondola 16 again. It shows that the hub 20 rotatable with the nacelle 16 is coupled. More precisely, the hub is 20 for transmitting a rotational movement via a rotor shaft 44 , a gearbox 46 , a high-speed shaft 48 and a clutch 50 with an electric generator 42 connected. transmission 46 and generator 42 be from a main carrier 52 worn, which is optionally designed as a main frame.

In this exemplary embodiment, the nacelle 16 a front support bearing 60 and a rear support bearing 62 this being the radial, axial support and support of the rotor shaft 44 serve in the circumferential direction. The front support bearing 60 is with the rotor shaft 44 near the hub 20 coupled. The rear support bearing 62 is in the range of the rotor shaft 44 near the gearbox 46 and / or the generator 42 arranged. Alternatively, the gondola 16 have any number of support bearings, which is the wind turbine 10 allow to function as described herein. rotor shaft 44 , Generator 42 , Transmission 46 , High speed shaft 48 , Clutch 50 and any associated fastening, support and / or securing device may be used as a drive train 64 be designated.

In the exemplary embodiment, in the hub 20 a pitch arrangement 66 of the pitch system 32 intended. This has one or more pitch drives 68 and at least one sensor 70 on. Every pitch drive 68 is with a corresponding rotor blade 140 coupled to the pitch angle of the associated rotor blade 140 along the rotor blade axis 141 adjust.

In the exemplary embodiment, the pitch arrangement includes 66 at least that with the hub 20 and the respective rotor blade 140 (shown in 1 ) coupled leaf bearing 72 for rotatably supporting the respective rotor blade 140 around the leaf axis 141 , The pitch drive 68 has a pitch motor 74 , a pitch gearbox 76 and a pinion 78 on. The pitch motor 74 is with the pitch gear 76 coupled. The pitch gear 76 is with the pinion 78 coupled so that the pinion 78 through the pitch gear 76 can be turned. The leaf store 72 is with the pinion 78 coupled, so that the rotation of the pinion 78 the rotation of the blade bearing 72 causes. More specifically, in the exemplary embodiment, the pinion is 78 with the blade bearing 72 coupled so that the rotation of the pitch gear 76 the leaf store 72 and the rotor blade 140 around the leaf axis 141 turns to the pitch angle of the sheet 140 to change.

Furthermore, the wind turbine 10 also a wind turbine control 36 which are centrally located in the gondola 16 is arranged. It is also conceivable, however, the wind turbine control 36 within every other component of the wind turbine 10 or in a place outside the wind turbine 10 provided. Furthermore, the wind turbine control 36 for purposes of communication with any number of components of the wind turbine 10 be coupled.

The wind turbine control 36 may include a computer or other suitable processing unit. For example, the wind turbine control 36 have suitable computer-readable instructions, which in implemented form the wind turbine control 36 such that various functions such as receiving, sending and / or executing control signals for wind turbine can be provided and fulfilled.

With the help of 3 the basic structure of embodiments of the obstruction fire device 100 and its exemplary arrangement in an upper leaf shell 146 of the rotor blade 140 (see dashed circle in 6 ).

The upper leaf shell 146 may be a fiber composite material located at the location of the throughbore 160 from outer layers 152 , Inner layers 153 and core material located between the layers 154 , for example, a balsa wood core, composed. The leaf cup 146 is manufactured, for example, by means of a vacuum infusion manufacturing process. A through hole 160 can do it be already provided during the manufacturing process, for example, by providing appropriate placeholder or subsequently drilled. These serve for receiving and / or for projecting through the obstacle fire device 100 ,

For the purpose of structuring, but not limited to, the obstacle firing device can be used 100 in a luminous section 110 , in a subsequent shaft section 120 and in one to the shaft portion 120 adjoining interior section 130 subdivide. The luminous section 110 and the shaft portion 120 can according to a longitudinal axis 101 , in particular rotationally symmetrical or with a round cross section, be formed.

In the present embodiment, a shaft length 122 equal to one thickness of the leaf cup 146 at the location of the through hole 160 so that the interior section 130 directly on an inner surface of the inner layers 153 is applied, and the luminous section 110 completely the outer layers 152 surmounted. It is conceivable that the effective shaft length 122 of the shaft portion 120 can be adapted to the respective present sheet thickness.

The luminous section 110 consists among other things of bulbs 111 , preferably LED bulbs, a carrier 118 for carrying the bulbs 111 and a transparent light housing 116 together. The luminous section 110 , in particular the geometric configuration of light sources 111 , Carrier 118 and / or light housing 116 causes the bulbs 111 a beam angle 112 of at least 120 °, in particular of at least 140 °, preferably of at least 160 °.

An outer diameter 113 of the light section 110 in the present case is less than or equal to a shaft diameter 121 , This ensures that the obstacle device 100 through the through hole 160 can be pushed so that the luminous section 110 completely the outer layers 152 surmounted.

The through hole 160 can be chosen so that a shaft outer surface 123 directly abuts an inner surface of the through hole, that is, the shaft diameter 121 approximately the diameter of the through hole 160 equivalent. Preferably, manufacturing tolerances are selected such that the shaft diameter 121 with respect to the diameter of the through hole 160 has a certain excess and thus a tight fit of the obstacle device 100 perpendicular to the longitudinal axis 101 is guaranteed.

Additionally or alternatively, between the shaft outer surface 123 and inner surface of the through hole 160 It can be provided so that on the one hand a tight fit of the obstacle device can be ensured, and on the other hand no moisture from the blade outside in the interior of the rotor blade 140 can get.

In 3 is exemplified that a portion of the shaft portion 120 with a thread 134 is provided, which together with one in the leaf cup 146 provided thread fastening means for securing the obstruction fire device 100 in the leaf cup 146 causes. Accordingly, the obstacle burner device becomes 100 during assembly with the light section 110 ahead in the through hole 160 Introduced until the threads of the thread 134 into the thread in the leaf cup, whereupon the entire obstacle device 100 in the rotor blade 140 is screwed. Furthermore, securing means may be provided, so that the screwed obstruction fire device 100 can not solve itself, for example by vibrations.

Further shows 3 an additional or alternative fastening device. This is made by magnets 133 formed on an inner surface 132 of the interior section 130 are provided. Corresponding with the magnets 133 cooperating correspondence elements, for example metal plates and / or corresponding magnets, in the leaf shell 146 intended. In this way it is achieved that the obstacle device fire 100 into the through hole 160 must be inserted until the magnetic fastener unfolds its effect and the obstruction fire device 100 holds in place.

The position of the obstruction fire device 100 in the direction of the longitudinal axis 101 is by a longitudinal stop 131 certainly. The obstacle burner device 100 can be as far in the through hole 160 insert until the longitudinal stop 132 on a corresponding stop on the inside 145 the inner layers 153 is applied.

In the present embodiment, but not limited thereto, the longitudinal stop 131 through the inner surface 132 of the interior section 130 be formed.

Furthermore, the obstacle fire device 100 a switching device 105 have, which is adapted to the bulbs 111 to activate and deactivate in a predetermined manner. Is the switching device 105 For example, equipped with trained as angle sensor sensor means, it can be achieved with a corresponding configuration that the bulbs 111 only be activated when the rotor blade 140 and / or the obstruction fire device 100 is located in an upper third of the rotor blade plane.

Furthermore, the inner section 130 a connection 135 for powering the obstruction lighting device 100 on.

The 4 to 6 illustrate a possible embodiment of an arrangement of obstacle fire devices 100 in the rotor blade 140 , The number and exact position of the obstacle fire devices 100 are not meant to be limiting.

4 is a frontal view on a leaf leading edge 150 a rotor blade 140 , There are obstacle fire devices 100 starting from the leaf root 142 in leaf longitudinal direction from a length of about 20% of the leaf length 148 intended.

5 shows a plan view of an upper side of the rotor blade 140 according to 4 , wherein it can be seen that the obstacle fire devices 100 not in the area of an upper belt 155 are arranged.

6 is a cross section through the rotor blade 140 according to 4 and 5 at the level of in 5 illustrated leaf tendon 149 , The upper leaf shell can be seen 146 and the lower leaf cup 147 , which together form the contour of the rotor blade 140 form.

Furthermore, structural components such as the reinforced blade leading edge 150 , the reinforced leaf trailing edge 151 , the upper strap 155 , the lower strap 156 and the web connecting the straps 157 shown.

These are, for example, in the upper leaf shell 146 and in the lower leaf cup 147 two obstacle fire devices each 100 , for example according to the in 3 shown installation provided.

While specific embodiments have been illustrated and described herein, it is within the scope of the present invention to properly modify the illustrated embodiments without departing from the scope of the present invention. For example, for this purpose, the design of the fastening device as a thread or as magnets are given.

LIST OF REFERENCE NUMBERS

10

wind turbine

12

tower

14

foundation

16

gondola

18

rotor

20

hub

28

wind direction

30

axis of rotation

32

pitch system

36

Wind turbine control

38

azimuth axis

42

generator

44

rotor shaft

46

transmission

48

High-speed shaft

50

clutch

52

main carrier

60

support bearings

62

support bearings

64

Drive train

66

Pitchanorndung

68

pitch drive

70

sensor

72

blade bearings

74

pitch engine

76

pitch gear

78

pinion

100

Obstruction device

101

longitudinal axis

105

switching device

110

luminous portion

111

Lamp

112

Beam

114

outer diameter

116

light box

118

carrier

120

shank portion

121

Shaft diameter

122

shaft length

123

Shank exterior

130

inner portion

131

longitudinal stop

132

palm

133

magnet

134

thread

135

connection

140

rotor blade

141

blade axis

142

blade root

144

blade tip

145

inside

146

Upper leaf shell

147

Lower leaf shell

148

blade length

149

blade chord

150

Blade leading edge

151

Blade trailing edge

152

outer layers

153

inner layers

154

core

155

Upper belt

156

Lower belt

157

web

158

Blattsehenrichung

159

Sheet longitudinally

160

Through Hole

Claims (16)

An obstacle fire device (100) for a rotor blade (140) of a wind turbine (10) a luminous section (110) with luminous means (111), formed with respect to a longitudinal axis (101) of the obstacle firing device (100), with a radiation angle (112) of at least 120 °, in particular of at least 140 °, preferably of at least 160 °, - An inner portion (130), a fastening device and a longitudinal stop (131), and a cylindrical shape-like shaft portion (120) having a maximum shaft diameter (121) connecting the luminous portion (110) and the inner portion (130), wherein a maximum outer diameter (114) of the luminous portion (110) is not greater than the shaft diameter (121) wherein the obstruction fire device (100) is designed to be able to be inserted with the luminous portion (110) from an inner side (145) of the rotor blade (140) through a through-bore (160) in a blade shell (146, 147) of the rotor blade (140), - By means of the longitudinal stop (131) in a defined mounting position on the inside (145) at least in the longitudinal direction (101) to be fixed, and - By means of the fastening means on the leaf shells (146, 147) to be firmly but detachably fastened. Obstruction fire device (100) after Claim 1 wherein the luminous portion (110) is formed such that the luminous portion (110) has a nominal luminous intensity of at least 10 Cd, in particular of at least 30 Cd, particularly preferably of at least 50 Cd. Obstruction fire device (100) after Claim 1 or 2 wherein the shaft portion (120) has a shaft length (122) of at least 10 mm, at least 20 mm, preferably at least 30 mm and / or at most 120 mm, in particular at most 100 mm, preferably at most 90 mm. An obstruction light apparatus (100) according to any one of the preceding claims, wherein the fastening means and / or the longitudinal stop (131) is / are arranged on the inner portion (130). An obstacle fire device (100) according to any one of the preceding claims, wherein the inner portion (130) has an inner surface (132) functioning as a longitudinal stop (131) extending at least partially substantially perpendicular to the longitudinal axis (101), in particular wherein the inner surface (132) is instantaneous adjacent to the shaft portion (120), and in particular the inner surface (132) and a shaft outer surface (133) enclose an angle of 80 ° to 100 °, in particular of approximately 90 °. Obstacle fire device (100) according to any one of the preceding claims, wherein the fastening device is designed as a cooperating with a counterpart on the sheet shell (146, 147) tension lock and / or at least one magnet (133). An obstacle fire device (100) according to any one of the preceding claims, wherein the attachment means is at least partially formed as a thread (134) on a shaft outer surface (123). An obstacle fire device (100) according to any one of the preceding claims, comprising a switching device (105) provided with switching means and sensor means cooperating therewith such that the lighting means (111) are activated only when the rotor blade (140) is in a predetermined position or is located in a predetermined position range. Obstacle fire device (100) according to one of the preceding claims, wherein the sensor means as inclination sensor, acceleration sensor, inclinometer, photosensors, limit switches, Limit switches, limit switches and / or position sensor are formed. A rotor blade (140) for a wind turbine (10) having a blade root (143), a blade tip (144), and two blade shells (146, 146) extending in a direction of a blade axis (141) from the blade root (143) to the blade tip (144). 147), wherein in at least one sheet shell (146, 147) at least one through hole (160) for receiving an obstruction fire device (100) according to one of Claims 1 to 9 is provided. Rotor blade (140) after Claim 10 wherein the through-bore (160), in the direction of the blade axis (141), at least 10%, in particular at least 20%, preferably at least 30%, and / or at most 80%, in particular at most 70%, preferably at most 60% of a sheet length ( 148) of the rotor blade (140), and / or at least 7 m, in particular at least 10 m, preferably at least 12 m away from the blade root (141) is arranged. Rotor blade (140) after Claim 10 or 11 in which the through-bore (160), in the direction of a blade chord (149) of the rotor blade (140), is at least 10%, in particular at least 20%, preferably at least 30%, and / or at most 80%, in particular at most 70%, preferably at most 60% of the sheet chord (149) is disposed away from a sheet leading edge (150) or a sheet trailing edge (151) of the rotor blade (140). Rotor blade (140) according to one of Claims 10 to 12 , comprising at least one through-hole (160) in each one of the two leaf shells (146, 147). Rotor blade (140) according to one of Claims 10 to 13 , comprising at least one obstacle fire device (100) according to one of Claims 1 to 9 , Rotor blade after Claim 14 wherein the shaft length (122) is at least as great as a thickness of the blade cup at the location of the throughbore. A wind turbine (10) having a tower (12), a nacelle (16) rotatably mounted on the tower (12) and a rotor (18), the rotor (18) being rotatably supported in the nacelle (16), and a rotor Hub (20) and at least one rotor blade arranged thereon (140) according to one of the preceding Claims 10 to 15 having.

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