Drive train and wind power plant with a drive train

• US 10,006,442 B2
• Filed: 08/28/2015
• Issued: 06/26/2018
• Est. Priority Date: 08/29/2014
• Status: Active Grant

• Current Assignee: Flender GmbH (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Deicke, Matthias
• Primary Examiner(s): Cuevas, Pedro J
• Application Number:
  US14/838,954
• Publication Number:
  US 20160061190A1
• Time in Patent Office: 1,033 Days
• Field of Search: 74606 R, 290 1 C, 310 54
• CPC Class Codes: F03D 1/06 Rotors
• 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: F03D 80/60 Cooling or heating of wind motors
• CPC Class Codes: F03D 80/70 Bearing or lubricating arrangements
• CPC Class Codes: F03D 80/80 Arrangement of components within nacelles or towers
• CPC Class Codes: F03D 80/88 of mechanical components
• CPC Class Codes: F03D 9/25 the apparatus being an electrical generator F03D9/22 takes precedence
• CPC Class Codes: F05B 2260/98 Lubrication
• CPC Class Codes: H02K 7/116 with gears
• CPC Class Codes: H02K 9/19 for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction
• CPC Class Codes: Y02P 80/10 Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Abstract

A drive train includes a gearbox having a gearbox housing, and a generator having a generator housing. A lubricating oil system including an oil reservoir lubricates toothed contact areas and/or bearings which are arranged within the gearbox housing. The oil reservoir is arranged within the generator housing or on an exterior side of the generator housing.

Claims

1. A drive train of a wind power plant, comprising:

a gearbox including a gearbox housing;

a non-permanent magnet generator including a generator housing; and

a lubricating oil system including lubricating oil pipes, or oil injection facilities and an oil reservoir configured to lubricate toothed contact areas and/or bearings arranged within the gearbox housing, said oil reservoir arranged within the generator housing or fastened directly exclusively to an exterior side of the generator housing, with no separate lubricating oil system arranged within the gearbox housing.

2. The drive train of claim 1, wherein the oil reservoir is arranged at least partially above a static oil level.

3. The drive train of claim 1, wherein the oil reservoir is arranged at least partially below a static oil level.

4. The drive train of claim 1, wherein the generator has a generator shaft defining an axis, said oil reservoir being arranged in concentric relationship to the axis of the generator shaft.

5. The drive train of claim 1, wherein the gearbox includes at least one gearbox stage, said at least one gearbox stage being formed by a planetary gearbox.

6. The drive train of claim 1, wherein the gearbox is configured to have plural gearbox stages, none of said gearbox stages being formed by a helical gearbox.

7. The drive train of claim 1, wherein the gearbox housing and the generator housing are connected to each other.

8. The drive train of claim 1, wherein the gearbox housing and the generator housing are flange-mounted to each other.

9. The drive train of claim 1, wherein the generator comprises a generator cooling circuit, said lubricating oil system being operatively connected to the generator cooling circuit.

10. The drive train of claim 1, wherein the lubricating oil system is configured to lubricate a drive train component arranged outside of the gearbox housing.

11. The drive train of claim 1, further comprising a rotor shaft and rotor mounted on the rotor shaft, said lubricating oil system being configured to lubricate a bearing block provided to support the rotor shaft.

12. The drive train of claim 1, wherein the generator has a generator shaft of hollow configuration to form an oil-conducting pipe of the lubricating oil system.

13. A wind power plant, comprising a drive train, said drive train comprising a gearbox including a gearbox housing, a non-permanent magnet generator including a generator housing, and a lubricating oil system including lubricating oil pipes or oil injection facilities and an oil reservoir configured to lubricate toothed contact areas and/or bearings arranged within the gearbox housing, said oil reservoir arranged within the generator housing or fastened directly exclusively to an exterior side of the generator housing, with no separate lubricating oil system arranged within the gearbox housing, wherein the oil reservoir is arranged at least partially above a static oil level, or at least partially below a static oil level, or in concentric relationship to a generator shaft of the generator.

14. The wind power plant of claim 13, wherein the gearbox includes at least one gearbox stage, said at least one gearbox stage being formed by a planetary gearbox.

15. The wind power plant of claim 13, wherein the gearbox housing and the generator housing are flange-mounted to each other.

16. The wind power plant of claim 13, wherein the generator comprises a generator cooling circuit, said lubricating oil system being operatively connected to the generator cooling circuit.

17. The wind power plant of claim 13, wherein the lubricating oil system is configured to lubricate a drive train component arranged outside of the gearbox housing.

18. The wind power plant of claim 13, wherein the drive train includes a rotor shaft and rotor mounted on the rotor shaft, said lubricating oil system being configured to lubricate a bearing block provided to support the rotor shaft.

19. The wind power plant of claim 13, wherein the generator has a generator shaft of hollow configuration to form an oil-conducting pipe of the lubricating oil system.