Method and arrangement for controlling the lubrication of a gear system
First Claim
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1. A gear lubrication arrangement for providing lubrication to a gear of a wind turbine, comprising:
- a lubrication pump for circulating lubrication fluid in the gear of the wind turbine,a power source coupled to the lubrication pump for driving the lubrication pump, anda controller coupled to at least one of the lubrication pump and the power source, for controlling an output power of the lubrication pump,wherein;
the gear lubrication arrangement comprises a pressure sensor disposed downstream of the lubrication pump in respect of lubrication fluid pumped by the lubrication pump,the pressure sensor is configured to measure a pressure of the lubrication fluid and to produce a pressure indication signal representative thereof,the gear lubrication arrangement comprises a temperature sensor configured to measure an actual temperature of the lubrication fluid and to produce a temperature indication signal representative of the actual temperature of the lubrication fluid, andthe controller is arranged to vary the output power of the lubrication pump at least partly on the basis of the pressure indication signal and at least partly on the basis of the temperature indication signal so that the output power of the lubrication pump is limited in response to a situation in which the temperature indication signal indicates temperature below a predetermined limit.
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Abstract
A gear lubrication arrangement comprises a lubrication pump for circulating lubrication fluid. A power source coupled to the lubrication pump drives the lubrication pump, and a controller controls an output power of the lubrication pump. The gear lubrication arrangement comprises a pressure sensor disposed down-stream of the lubrication pump The pressure sensor is configured to measure a pressure of the lubrication fluid and to produce a pressure indication signal representative thereof. The controller is arranged to vary the output power of the lubrication pump at least partly on the basis of the pressure indication signal.
14 Citations
18 Claims
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1. A gear lubrication arrangement for providing lubrication to a gear of a wind turbine, comprising:
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a lubrication pump for circulating lubrication fluid in the gear of the wind turbine, a power source coupled to the lubrication pump for driving the lubrication pump, and a controller coupled to at least one of the lubrication pump and the power source, for controlling an output power of the lubrication pump, wherein; the gear lubrication arrangement comprises a pressure sensor disposed downstream of the lubrication pump in respect of lubrication fluid pumped by the lubrication pump, the pressure sensor is configured to measure a pressure of the lubrication fluid and to produce a pressure indication signal representative thereof, the gear lubrication arrangement comprises a temperature sensor configured to measure an actual temperature of the lubrication fluid and to produce a temperature indication signal representative of the actual temperature of the lubrication fluid, and the controller is arranged to vary the output power of the lubrication pump at least partly on the basis of the pressure indication signal and at least partly on the basis of the temperature indication signal so that the output power of the lubrication pump is limited in response to a situation in which the temperature indication signal indicates temperature below a predetermined limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A gear unit of a wind turbine, comprising:
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a first shaft and a second shaft for connecting to an external mechanical system, at least one gear stage located between the first and second shafts, bearings supporting said first and second shafts, and a gear lubrication arrangement for providing lubrication to said gear stage and said bearings; wherein; the gear lubrication arrangement comprises a lubrication pump configured to circulate lubrication fluid in the gear of the wind turbine, a power source coupled to the lubrication pump and configured to drive the lubrication pump, and a controller coupled to at least one of the lubrication pump and the power source, and configured to control an output power of the lubrication pump, the gear lubrication arrangement comprises a pressure sensor disposed downstream of the lubrication pump in respect of the lubrication fluid pumped by the lubrication pump, the pressure sensor is configured to measure a pressure of the lubrication fluid and to produce a pressure indication signal representative thereof, the gear lubrication arrangement comprises a temperature sensor configured to measure an actual temperature of the lubrication fluid and to produce a temperature indication signal representative of the actual temperature of the lubrication fluid, and the controller is arranged to vary the output power of the lubrication pump at least partly on the basis of the pressure indication signal and at least partly on the basis of the temperature indication signal so that the output power of the lubrication pump is limited in response to a situation in which the temperature indication signal indicates temperature below a predetermined limit.
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15. A method for providing lubrication to a gear of a wind turbine, comprising:
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circulating lubrication fluid to the gear with a selected pumping power, measuring a pressure of the lubrication fluid downstream of a lubrication pump that produces said pumping power, measuring an actual temperature of the lubrication fluid and producing a temperature indication signal representative of the actual temperature of the lubrication fluid, and varying the selected pumping power at least partly on the basis of the pressure indication signal and at least partly on the basis of the measured actual temperature of the lubrication fluid so that the pumping power is limited when the temperature indication signal indicates temperature below a predetermined limit. - View Dependent Claims (16, 17, 18)
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Specification