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Dampers for vibration reduction of wind turbine towers

A wind turbine tower and damper technology, which is applied in the direction of shock absorbers, friction dampers, shock absorbers, etc., can solve the problems of installation and maintenance inconvenience, and achieve the effect of easy installation and obvious vibration reduction effect

Active Publication Date: 2020-02-14
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the deficiencies in professional technology that are not suitable for vibration reduction of fan towers and inconvenient installation and maintenance, the present invention proposes a damper for vibration reduction of fan towers

Method used

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  • Dampers for vibration reduction of wind turbine towers
  • Dampers for vibration reduction of wind turbine towers
  • Dampers for vibration reduction of wind turbine towers

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Embodiment Construction

[0030] This embodiment is a damper for wind turbine tower vibration reduction, including iron sand barrel 1, iron sand 2, friction rod 3, top cover 4, movable hanging code 5, fixed pulley 6 and steel cable 7. Wherein, the top cover 4 is fixed on the upper surface of the iron sand bucket 1; the friction rod 3 is located in the iron sand bucket 1, and the upper end of the friction rod passes through the through hole in the geometric center of the top cover, so that the The lower end of the friction rod passes through the through hole at the bottom center of the iron sand bucket; the side surface of the friction rod 3 is in sliding fit with the through hole of the top cover and the through hole at the bottom of the iron sand bucket. The movable hanging code 5 is fixed on the upper end of the friction rod 3; one end of the steel cable 7 passes through the movable hanging code, and the other end bypasses the fixed pulley 6 and is connected to the top of the tower. The center of the...

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Abstract

The invention provides a damper for reducing vibration of a fan tower. A frictional bar is mounted in an iron sand barrel, and a side surface of the frictional bar is in sliding fit with a top cover through hole and a through hole in the bottom of the iron sand barrel separately. A movable suspension fitting is fixed on the upper end surface of the frictional bar, and is connected with a tower topthrough a steel cable. A fixed pulley is fixed on a supporting plate which is positioned on one side of a top cover. The iron sand barrel is filled with iron sand. Energy is consumed by friction between the iron sand and the frictional bar, continuous and effective operation of the damper is ensured by the gravity of the frictional bar, the structure is simple, installation is implemented on theground basically, high-altitude operation is avoided, space in the tower is saved, the volume of the iron sand can be adjusted according to actual amplitude or the iron sand is magnetized, vibration of the fan tower can be relieved effectively, and the damper is suitable for fans in various specifications on the land.

Description

technical field [0001] The invention relates to the field of fan vibration control, and relates to a damper which uses iron sand as a damping medium and is used for vibration reduction of a tower in a wind power generating set. Background technique [0002] As the power of a single wind turbine increases gradually, the mass of the nacelle, the impeller, and the height of the tower continue to increase, and the concept of a flexible tower is proposed. Since the design of the flexible tower can greatly reduce the weight of the tower when the height of the tower is high, reduce the production cost of the tower, and improve the market competitiveness of the wind turbine, the flexible tower is the development of the large wind turbine tower in the future. trend. However, the nature of the flexible tower itself determines that the rotation frequency of the fan impeller will be higher than the natural frequency of the tower. Therefore, for the flexible tower, from the time the imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D13/20F03D80/00F16F7/01
CPCF03D13/20F03D80/00F16F7/015Y02E10/72Y02E10/728
Inventor 廖明夫刘准汶晨曦
Owner NORTHWESTERN POLYTECHNICAL UNIV
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