SENSORISED MULTIPLIER

• US 20090320631A1
• Filed: 01/21/2008
• Published: 12/31/2009
• Est. Priority Date: 01/26/2007
• Status: Abandoned Application

• Current Assignee: Gamesa Innovation and Technology SL (Siemens AG)
• Original Assignee: Gamesa Innovation and Technology SL (Siemens AG)
• Inventors: Urzelai Iribarren, Gurutz
• Application Number:
  US12/524,199
• Publication Number:
  US 20090320631A1
• Time in Patent Office: Days
• US Class Current: 74/412.00R
• CPC Class Codes: F03D 15/00 Transmission of mechanical power
• CPC Class Codes: F03D 15/10 using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
• CPC Class Codes: F05B 2260/4031 as in toothed gearing
• CPC Class Codes: F05B 2260/70 Adjusting of angle of incidence or attack of rotating blades
• CPC Class Codes: F05B 2260/80 Diagnostics
• CPC Class Codes: F05B 2270/107 to cope with emergencies
• CPC Class Codes: F16H 2057/012 of gearings
• CPC Class Codes: F16H 57/01 Monitoring wear or stress of gearing elements, e.g. for triggering maintenance
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction
• CPC Class Codes: Y10T 74/19642 Directly cooperating gears
• CPC Class Codes: Y10T 74/2186 Gear casings

Abstract

Sensorized gearbox with a plurality of sensors (8) and (14) assembled in a set of fixed parts (5) and (12) to the gearbox (1), measuring loads in the rotating shaft (11) and axial and radial forces derived from wind turbine operation. Sensors (8) and (14) assembled on the selected parts (5) and (12) detect in a specific time interval or during the life of the gearbox, measuring instantaneously and sending data to a control system that regulates the machine'"'"'s power by controlling the r.p.m., wind turbine

Claims

1. Sensorized gearbox installed between the rotor hub (2) and the generator (3), which comprises a plurality of sensors outside and inside it, characterized by the sensors (8 and 14) being applied in points near to the bearings and shafts, preferably in bushings (12) and bearing supports or covers (5) and measure the deformations, loads and axial and radial forces of the rotating shafts, measuring instantly and carried out in a control system that controls the wind turbine'"'"'s power.

6. Sensorized gearbox, according to claim 1, characterized by the signals emitted by the sensors feeding the wind turbine'"'"'s control system, becoming digital data that can be stored in an information system and directly used for real time action on the r.p.m. control system, emergency stop, pitch or one or more blades, etc.

2. Sensorized gearbox, according to the first claim, characterized because the cover (5) is fixed to the casing walls (7) where the rotating shafts (4, 5 and 6) are supported, transmitting shaft loads (11) to the casing (7). This cover (5) has a number of ribs (10) according to the loads to be measured and the different sensitivity for each angular position, with a sensor element (14) coupled to each rib (10).

3. Sensorized gearbox, according to the 2nd claim, characterized by the cover (5) sensors (14) recording axial forces and deformations.

4. Sensorized gearbox, according to the first claim, characterized by the bushing (12) being on the casing (7) or body of the gearbox, supporting the bearing (9) and the rotating shaft (11) at the same time, having a number of sensor elements (8) and their fixing is finished off with some auxiliary parts (13) installed between the shaft (11) and bearing (9) to fix and center the two elements.

5. Sensorized gearbox, according to the 4th claim, characterized by the bushing'"'"'s (12) sensor elements (8) being combined to measure the radial loads.