• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a rotor blade (1) for a turbine. According to the invention, this rotor blade (1) has a cavity (10) and at its lower end at least two ribs (32, 32 ', 42, 42', 52, 52 ', 62, 62', 72, 72 '). The invention further relates to a turbine, in particular a tidal current turbine, which has at least two, preferably three, rotor flights (1) according to the invention. Due to the inventive design, the rotor blade is sufficiently stable even with smaller diameters of the lower end, wherein the proportion of the total length of the rotor blade for energy can be substantially increased.
    公开号:AT512432A1
    申请号:T62/2012
    申请日:2012-01-20
    公开日:2013-08-15
    发明作者:Johannes Geromiller；Daniel Plessing；Carsten Herrmann
    申请人:Andritz Hydro Gmbh；
    IPC主号:
    专利说明:

    * · Μ · * «· #« * · * »» ·· * «· *
    "*" Φ · · I I I I I I I I · · · · · · · · · · · · · · · · · · ·
    The invention relates to a rotor blade for a turbine. Such turbines may i.a. Wind turbines, seawater turbines, tidal current turbines.
    The rotor blades are in the foot area, i. When connecting to the turbine hub, exposed to very large bending moments, which very large and expensive flange connections are required to ensure the necessary stiffness. such
    Flanged connections are e.g. from WO2010 / 084320 A2 or WO 2011/077454 AΛ. Also, therefore, the contour of the wing must be adapted to these geometric dimensions and can not be optimized for the energy gain. Also, there are vanes or wings molded to the hub, such as e.g. of the
    A
    Ship propeller of US 3,310,116 ^ £ ..
    The invention has set itself the goal of creating a rotor blade that is easy to attach to the hub and whose profile can be matched to the energy gain.
    The invention is therefore characterized in that the rotor blade has a cavity and at its lower end at least two ribs. As a result, the rotor blade is sufficiently stable even with smaller diameters of the lower end, wherein the proportion of the total length of the rotor blade for energy production can be substantially increased.
    An advantageous development of the invention is characterized in that a pin is provided for connection to the hub of a turbine rotor, which is positively and / or non-positively connected to the ribs.
    A favorable embodiment of the invention is characterized in that the wing is made of steel. As a result, the wing can be made much smaller. It can be welded from sheet steel, the wing foot may optionally be made of cast iron. A favorable development of the invention is characterized in that the pin is connected by means of at least one screw arranged in the axial direction with at least one rib, wherein it can also be connected by at least one screw arranged in the radial direction or a pin with at least one rib. An alternative embodiment of the invention is characterized in that the pin has at least one cone or shoulder and is frictionally connected thereto with a rib, wherein the pin may have a further cone or shoulder which has an opposite slope to the first cone or shoulder. As a result, the forces acting on the wing can be transferred favorably to the pin and subsequently to the hub. 1
    A401207 AT «· ···································································································« ··· »Ft ·» · «··« 4 it
    If a retaining ring is preferably provided which can be positively connected to the further cone or shoulder, the wing can be fixed in a simple manner and the forces transmitted.
    A development according to the invention is characterized in that tie rods connected to at least one rib are provided. Thus, the fastening devices can be pre-assembled in a simple manner, which leads to shorter installation times on site. It is particularly favorable when the pin is non-positively connected by biasing the tie rods with the at least two ribs.
    Alternatively, the pin with the at least two ribs form-fit and be held by means of a clamping ring positive and non-positive.
    The invention also relates to a turbine, in particular tidal current turbine having at least two, preferably three rotor flights having the above structure. Particularly for tidal current turbines, a stable rotor blade is required, with the rotor blade according to the invention having the advantage of good energy conversion in the smallest space. It can also be provided several wings.
    The invention will now be described by way of example with reference to the drawings, in which Fig. 1 shows an arrangement for a turbine according to the invention,
    Fig. 2 shows the connection of a wing to the shaft
    Fig. 3 shows a first variant of the connection pin - wing
    Fig. 4 shows another variant for the connection pin - wings
    Fig. 5 shows a further variant of the invention for the connection pin - wings
    6 a, b, c, the assembly of the pin according to the variant in Fig. 5th
    6d shows a variant of the embodiment according to FIGS. 6a, b, c,
    Fig. 7 represents a further variant of the invention for the connection pin - wings.
    Fig. 1 shows an arrangement for a turbine, as e.g. is used to harness the energy from tidal currents. By way of example, this turbine has three rotor blades 1, which are connected to the shaft 5 via a hub 4. But it can also be used two, four or more wings.
    Fig. 2 shows the connection of a rotor blade 1 to the shaft 5. The pin 2 of the rotor blade 1 is mounted on a bearing or other attachment 3 in the hub 4, which is fixedly connected to the shaft. It can be provided facilities by means of 2
    A401207 AT 1
    1% of which the rotor blade 1 can be turned into the flow for optimal energy production.
    In Fig. 3, a variant of the invention connection of pin 2 with the rotor blade 1 is now shown. In the lower end 31 of the rotor blade 1 are located in the cavity 10 power transmission elements, which are formed as ribs 32, 32 '. The pin 2 is inserted through a precisely fitting opening 33 in the bottom rib 32 in the lower end 31 of the rotor blade 1 and extends to the top rib 32 ', where it is inserted into a recess 34. Between the bottom rib 32 and the top rib 32 'further ribs may be arranged, each having openings analogous opening 33. The pin 2 further has a stop 35 which terminates on the outside with the lowermost rib 32 as soon as the pin 2 is completely inserted in the recess 34. Through an opening 36 in the lower end 31 of the rotor blade 1, a screw 37 is inserted and fixed in the axis of the pin 2. It is also possible to have a plurality of axially arranged screws, e.g. are arranged in the manner of a bolt circle are used. As a result, the lowermost rib 32 and the uppermost rib 32 'are braced against each other and can thus transfer the forces occurring well.
    Fig. 4 shows an analogous to Fig, 3 arrangement of a rotor blade 1 here are in the lower end 41 of the rotor blade 1 in the cavity 10 power transmission elements, which are formed as ribs 42,42 '. The pin 2 is inserted through a precisely fitting opening 43 in the lowermost rib 42 in the lower end 41 of the rotor blade 1 and extends to the uppermost rib 42 ', where it is inserted into through an opening 44. Between the lowermost rib 42 and the uppermost rib 42 ', further ribs can also be arranged here, each having openings analogous to the opening 43. The pin 2 further has a stop 45 which terminates on the outside with the lowermost rib 42 as soon as the pin 2 extends through the opening 44 in the uppermost rib 42 '. Through one or more circumferentially distributed holes 46 in the lower end 41 of the rotor blade 1, a stud 47 is inserted and tightened in the pin 2. Of course, several stud bolts 47 can be used distributed around the circumference.
    Fig. 5 shows a further variant according to the invention of the connection of pin 2 with rotor blade 1. Here are in the lower end 51 in the cavity 10 of the rotor blade 1 power transmission elements, which are formed as ribs 52, 52 ', wherein also further ribs can be used , The pin 2 here has two konusformige areas 56 and 58. The upper portion 56 of the pin 2 in this case fits exactly into the likewise conical opening 54 of the uppermost rib 52 '. The lower cone-shaped 3
    A401207 AI * * * * i «* · · · · * *« ··· # ·· «* •» · · · · · · · · · · · · · · · · · · · · 4 · * · * # * «| * «··· * ί 4 *
    Area 58 of the pin 2 is here adapted to the likewise conical running retaining ring 55 which is fitted into the opening 53 of the lower rib 52, in which case between the retaining ring 55 and opening 53 a parting line may be provided to facilitate assembly. About tie rods 57, the retaining ring 55 is now braced against the upper rib 52 '. Preferably, the upper cone-shaped portion 56 of the pin 2 at a shallow angle, so that it is self-locking and can absorb the torsional and axial forces occurring. The lower cone-shaped portion 58 of the pin 2 advantageously has a steep angle, whereby the disassembly is facilitated. In this variant of the attachment a cost-effective production of the pin is possible and there are no debilitating notches by e.g. Keyways or cross holes. The introduction of force into the rotor blade 1 can be done favorably by the at least two ribs 52, 52 'and thereby a slimmer blade (wing) construction becomes possible.
    6a, 6b and 6c now show the assembly process for a connection according to the invention of pin 2 and rotor blade 1 according to FIG. 5. On a pin 2 with an upper cone-shaped region 66 and a lower cone-shaped region 68, a one-piece retaining ring 65 is first pushed and then the journal bearing 3 mounted. (Figure 6a). On the other hand, tie rods 67 are preassembled in the uppermost rib 62 'of the rotor blade 1. Subsequently, the preassembled with the retaining ring 65 pin 2 is inserted through the opening 63 in the bottom rib 62 until it engages with its upper cone-shaped portion 66 in the opening 64 of the uppermost rib 62 'to the cavity 10 out. (Fig. 6b)
    Subsequently, the retaining ring 65 is pushed over the tie rods 67 so far until it engages in the opening 63 of the lowermost rib 62 and rests against the lower conical portion 68 of the pin 2. Subsequently, the retaining ring 65 is screwed via Muttem 69 with Zugankem 67 and thereby the two cone-shaped portions 66, 68 of the pin 2 with the lowermost rib 62 and the uppermost rib 62 'braced so that a backlash-free power transmission is achieved. (Figure 6c)
    6d now shows a variant of the embodiment according to FIGS. 6a, 6b, 6c. Instead of an upper or lower cone-shaped region is here in each case a paragraph 66 'or 68', i. a step may be provided, wherein the pin 2 between the two paragraphs 66 'and 68' has a larger diameter than the rest of the pin shaft and by clamping together by means of tie rods 67 is positively connected to the ribs 62, 62 'of the wing 1. 4
    A401207 AT * t * t »I · 9 9 9 999 ·
    FIG. 7 now shows a further variant of the connection according to the invention of pins 2 with the rotor blade 1, two ribs 72, 72 'in turn being shown here at the lower end 71 of the rotor blade, it also being possible for a plurality of ribs to be provided. Here, the lowermost rib 72 has a flange 76, which forms an opening 73 for the pin 2. 5 Furthermore, the stop 75 of the pin 2 has a flange-like edge. Around the two flanges around a clamping ring 77 is now attached, which can be made in one piece, but also in two parts. Thus, the pin 2 is also connected to the rotor blade 1 such that it can easily absorb the resulting torsional and Axialkräffe. 5
    A401207 AT
    权利要求:
    Claims (10)
    [1]
    1. Rotor blade for a turbine, characterized in that the rotor blade (1) has a cavity (10) and at has at least two ribs (32, 32 ', 42, 42', 52, 52 ', 62, 62', 72, 72 ') at its lower end.
    [2]
    2. Rotor wing according to claim 1, characterized in that a pin (2) for connection to the hub (4) of a turbine rotor is provided with the ribs (32, 32 ', 42,42', 52, 52 ', 62nd , 62 ', 72, 72') is positively and / or non-positively connected.
    [3]
    3. Rotor blade according to claim 1 or 2, characterized in that the rotor blade (1) is made of steel.
    [4]
    4. Rotor blade according to one of claims 1 to 3, characterized in that the pin (2) by means of at least one screw arranged in the axial direction (37) with at least one rib (32 ') is connected.
    [5]
    5. Rotor blade according to one of claims 1 to 3, characterized in that the pin (2) by means of at least one screw arranged in the radial direction or a pin (47) with at least one rib (42 ') is connected.
    [6]
    6. Rotor blade according to one of claims 1 to 3, characterized in that the pin (2) has at least one cone (56,66) or a shoulder (66 ') and with this with a rib (52', 62 ') non-positively wherein the pin (2) may comprise a further cone (58, 68) or shoulder (68 '), the further cone (58, 68) having an opposite pitch to the first cone (56, 66) and preferably one Retaining ring (55,65) is provided, which is positively connected to the other cone (58, 68).
    [7]
    7. Rotor wing according to one of claims 6 to 8, characterized in that with at least one rib (52 ', 62') connected tie rods (57, 67) are provided.
    [8]
    8. Rotor wing according to claim 7, characterized in that the pin (2) by biasing the tie rods (57, 67) with the at least two ribs (52, 52 ', 62, 62') is non-positively connected.
    [9]
    9. rotor blade according to one of claims 1 to 3, characterized in that the pin (2) with the at least two ribs (72, 72 ') positively closes and by means of a clamping ring (77) positively and non-positively held. 6 A401207 AT
    [10]
    10. Turbine, in particular tidal current turbine, characterized in that it comprises at least two, preferably three rotor blades (1) according to one of claims 1 to 9. 7 A401207 AT
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    同族专利:
    公开号 | 公开日
    AU2013211248B2|2016-09-08|
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    US20150071784A1|2015-03-12|
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    AU2013211248A1|2014-08-14|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA62/2012A|AT512432B1|2012-01-20|2012-01-20|ROTOR WINGS FOR A TURBINE|ATA62/2012A| AT512432B1|2012-01-20|2012-01-20|ROTOR WINGS FOR A TURBINE|
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    AU2013211248A| AU2013211248B2|2012-01-20|2013-01-17|Rotor blade for a turbine|
    US14/373,607| US9797371B2|2012-01-20|2013-01-17|Rotor blade for a turbine|
    KR1020147023162A| KR20140116518A|2012-01-20|2013-01-17|Rotor blade for a turbine|
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