Vibration-limiting module and device, structural segment for a structural installation, and wind turbine having a vibration-limiting module

Patent metadata

Field	Value
Publication number	US-10024378-B2
Application number	US-201314649118-A
Country	US
Kind code	B2
Filing date	Nov 29, 2013
Priority date	Dec 4, 2012
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A vibration absorber module for a vibration-absorbing device, in particular for a vibration-absorbing device realized for suspended attachment of the vibration absorber module to a structural installation, having a bearing structure, a pendulum system, having a pendulum mass, and having a suspension system for suspending the pendulum mass on the bearing structure, the suspension system having a number of pendulum spring elements and having a pendulum mass suspension, which extends between the pendulum mass and the bearing suspension, in the direction of a suspension axis, and the pendulum mass suspension being fastened, by means of its suspension head, to the bearing structure.

First claim

The invention claimed is:

1. A vibration-reducing module, comprising:
a bearing structure;
a pendulum system having a pendulum mass and a suspension system for suspending the pendulum mass on the bearing structure, the suspension system having a pendulum mass suspension that extends in a direction of a suspension axis and is fastened to the bearing structure by a suspension head, the suspension system having a plurality of pendulum spring elements extending in the direction of the suspension axis, and the suspension head of the pendulum mass suspension having a joint head that is fastened to the bearing structure and has a pendulum bearing that is a slide bearing, wherein the plurality of pendulum spring elements each include a spring disc that is spaced apart from a first side of a base plate; and
a carrier profile on a second side of the base plate, the carrier profile having a variably settable setting mechanism, and the carrier profile having a stop and an adjusting means.

2. The module according to claim 1 , wherein the plurality of pendulum spring elements include compression springs.

3. The module according to claim 2 , wherein the plurality of pendulum spring elements each have a spring mounting designed for variably setting a spring length of the spring and for setting a compressive spring force of the spring.

4. The module according to claim 2 , wherein the springs have an end connected directly or indirectly to the pendulum mass.

5. The module according to claim 1 , wherein the setting mechanism has a guide rod having a rotary thread that engages in a threaded hole that serves as a stop, the guide rod having a proximal portion having a point of application for rotary means and distal portion having an adjusting means for displacing the spring disc.

6. The module according to claim 1 wherein the pendulum mass suspension is invariable with respect to length and direction.

7. The module according to claim 1 , wherein each of the plurality of pendulum spring elements has a first spring and a second spring, wherein the first and second springs are compressive springs, the first springs having differing compressive spring forces from the second springs.

8. The module according to claim 1 , wherein each of the plurality of pendulum spring elements has a first spring and a second spring, wherein the first and second springs are compressive springs having the same compressive spring force.

9. The module according to claim 1 , wherein the plurality of pendulum spring elements are of an even number.

10. The module according to claim 1 , wherein the plurality of pendulum spring elements are disposed symmetrically with respect to an angle of rotation about the pendulum mass suspension that is disposed centrally on the suspension axis.

11. The module according to claim 1 , wherein the plurality of pendulum spring elements are fixed to a top side of the pendulum mass.

12. The module according to claim 1 , wherein the pendulum mass suspension has a pendulum rod having a proximal end that is coupled to the joint head.

13. The module according to claim 12 , wherein the pendulum rod extends through the pendulum mass along the suspension axis, and the pendulum mass has a bottom side that abuts a distal stop of the pendulum rod and a top side that is held on a counter-stop of the pendulum rod.

14. The module according to claim 1 , wherein the joint head includes a bearing pin that is held in a bearing pin receiver, the pendulum mass suspension being held on the bearing pin in a rotatably sliding manner to form the slide bearing.

15. The module according to claim 14 , wherein at least one of the slide bearing the joint head, the bearing pin, and the bearing pin receiver have a corrosion protection that includes a zinc coating.

16. The module according to claim 1 , wherein at least one slide surface of the slide bearing includes roller-bearing steel.

17. The module according to claim 1 , wherein, at the side of an inner ring of the joint head, a bearing pin carries a lip seal.

18. The module according to claim 1 , wherein the suspension system has a tensioning structure that is configured to be tensioned in a settable manner, wherein the tensioning structure provides an anti-drop safeguard extending between the pendulum mass and the bearing structure.

19. The module according to claim 1 , wherein the pendulum system has at least one damper element that is at least one of an amplitude limiter and end-position limiter.

20. The module according to claim 1 , wherein the suspension system includes a pendulum damping that is configured to dampen motion of the pendulum system during a free pendulum motion.

21. The module according to claim 1 , further comprising an active control element coupled to the pendulum system, the active control element having an active feedback control system comprising a phase detector, a regulator and a power amplifier.

22. A vibration-reducing device comprising a plurality of vibration-reducing modules according to claim 1 , wherein the vibration-reducing device is configured to be attached to a structural installation.

23. The device according to claim 22 , comprising an even number of vibration-reducing modules.

24. The device according to claim 22 wherein the plurality of vibration-reducing modules have at least one of a same length, a same direction of swing, and a same spring tension settings.

25. The device according to claim 22 wherein plurality of vibration-reducing modules differ in at least one of length, direction of swing, and spring tension setting.

26. A structural segment for a wind turbine having a module according to claim 1 .

27. The structural segment according to claim 26 , wherein a plurality of modules are disposed in a circumferentially symmetrical manner with respect to an angle of rotation a central axis.

28. A wind turbine comprising:
a tower having a tower segment that has a vibration-reducing module, the vibration-reducing module including:
a bearing structure;
a pendulum system having a pendulum mass and a suspension system for suspending the pendulum mass on the bearing structure, the suspension system having a pendulum mass suspension that extends in a direction of a suspension axis and is fastened to the bearing structure by a suspension head, the suspension system has a plurality of pendulum spring elements extending in the direction of the suspension axis, and the suspension head of the pendulum mass suspension has a joint head that is fastened to the bearing structure and has a pendulum bearing that is a slide bearing, wherein the plurality of pendulum spring elements each include a spring disc that is spaced apart from a first side of a base plate; and
a carrier profile on a second side of the base plate, the carrier profile having a variably settable setting mechanism, and the carrier profile having a stop and an adjusting means; and

a nacelle mounted on the tower and carrying a rotor.

29. The wind turbine according to claim 28 , wherein the tower segment is disposed in a region that is located at approximately ⅔ of a height of the tower.

30. The wind turbine according to claim 29 wherein approximately ⅔ of the height of the tower is plus or minus 20% the height of the tower.

Assignees

• Wobben Properties Gmbh

Inventors

• Könitz Malte
• Kraft Martin

Classifications

• E04H9/0215

  involving active or passive dynamic mass damping systems · CPC title

• Y02E10/728

  Onshore wind turbines · CPC title

• F16F7/116 Primary

  on metal springs · CPC title

• F05B2240/912

  on a tower · CPC title

• F16F15/121 Primary

  using springs as elastic members, e.g. metallic springs {(F16F15/133 takes precedence)} · CPC title