Stator device for a continuous-flow machine with a housing appliance and multiple guide vanes

Patent metadata

Field	Value
Publication number	US-2016376916-A1
Application number	US-201615192417-A
Country	US
Kind code	A1
Filing date	Jun 24, 2016
Priority date	Jun 25, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

A stator device for a continuous-flow machine with guide vanes circumferentially distributed on a housing. The guide vanes are respectively embodied with a blade leaf and at least one platform. The platforms form a surface of an annular channel through which working fluid flows. A flow area is provided via which, during operation of the stator device, a working fluid flows on a side of the platform that is facing away from the annular channel from a pressure side of the blade leaf to a suction side of the blade leaf at least in certain areas in the radial direction of the stator device. At least one suction appliance is provided which adjoins the flow area and is formed by a recess, and via which working fluid can be conducted out of the flow area during operation of the stator device.

First claim

1 . A stator device for a continuous-flow machine with a housing appliance and multiple guide vanes that are arranged in a circumferentially distributed manner at the housing appliance, wherein the guide vanes are respectively embodied with a blade leaf and respectively at least one platform, wherein the platforms at least in certain areas form a surface of a annular channel through which working fluid flows during operation of the stator device, and are mounted so as to be adjustable with respect to the housing appliance, and wherein a flow area is provided via which a working fluid flows during operation of the stator device at least in certain areas in the radial direction of the stator device on a side of the platform that is facing away from the annular channel from a pressure side of the blade leaf to a suction side of the blade leaf, wherein
at least one suction appliance is provided which adjoins the flow area and is formed by a recess, and via which working fluid can be conducted out of the flow area during operation of the stator device.

2 . The stator device according to claim 1 , wherein the suction appliance directly adjoins the surface of the annular channel.

3 . The stator device according to claim 1 , wherein the suction appliance adjoins the flow area at a distance to the surface of the annular channel in the radial direction of the stator device.

4 . The stator device according to claim 1 , wherein the suction appliance extends substantially in the radial direction of the stator device.

5 . The stator device according to claim 1 , wherein the suction appliance is connected to the flow area in an area that is facing towards the pressure side and/or the suction side of the blade leaf of the guide vane.

6 . The stator device according to claim 1 , wherein the suction appliance extends in the circumferential direction of the guide vane across an angular range that is in particular larger than 20°, preferably larger than 30°.

7 . The stator device according to claim 1 , wherein the suction appliance extends inside the housing appliance so as to substantially run along the circumference with respect to a central axis of the stator device.

8 . The stator device according to claim 1 , wherein the housing appliance has a recess that adjoins the annular channel in the area of the guide vane.

9 . The stator device according to claim 1 , wherein at least one platform is arranged in the axial direction of the stator device between two reference points of the annular channel, wherein a first reference point represents a boundary point of the annular channel, which is arranged upstream of a front end of the platform by 10% of an axial extension of the platform with respect to a central longitudinal axis of the platform, and wherein a second reference point represents a boundary point of the annular channel, which is arranged downstream of a rear end of the platform by 10% of the axial extension of the platform with respect to the central longitudinal axis of the platform, wherein at least one edge area of the platform projects into the annular channel with respect to a rectilinear connection of the two reference points in the radial direction of the stator device.

10 . The stator device according to claim 9 , wherein the edge area of the platform that projects into the annular channel with respect to the rectilinear connection of the two reference points is located in a front and/or a rear area of the platform in the axial direction of the stator device.

11 . The stator device according to claim 1 , wherein the platform of the guide vane is arranged in an inner and/or outer edge area of the blade leaf with respect to the radial direction of the stator device.

12 . The stator device according to claim 9 , wherein the edge area of the platform that extends into the annular channel extends into the annular channel by at least 0.3%, in particular approximately 0.8%, of an extension of the annular channel with respect to a rectilinear connection of the reference points in the radial direction of the stator device in the area of the edge area of the platform.

13 . The stator device according to claim 9 , wherein the edge area of the platform that extends into the annular channel is embodied with a round in a front or rear area in the axial direction of the stator device, wherein the edge area of the platform that extends into the annular channel is preferably embodied with a projection, and wherein the platform has a larger extension in the axial direction of the stator device in an area that is facing towards the annular channel than in an area that is facing away from the annular channel, wherein the projection preferably overlaps the housing appliance that adjoins the platform in the axial direction of the stator device at least in certain areas.

14 . A blade wheel device with a stator device according to claim 1 and a rotor device, wherein the suction appliance is connected to a conduit area via which working fluid can be supplied to a rotor device during operation of the blade wheel device.

15 . The blade wheel device according to claim 14 , wherein the conduit area has at least one nozzle via which working fluid can be supplied to the rotor device during operation of the blade wheel device.

Assignees

• Rolls Royce Deutschland Ltd & Co Kg

Inventors

• Grothe Patrick

Classifications

• F01D17/162 Primary

  for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line (F01D17/167 takes precedence) · CPC title

• F05D2220/32

  in gas turbines · CPC title

• F01D9/041

  using blades (F01D5/148 takes precedence) · CPC title

• F04D29/563

  specially adapted for elastic fluid pumps · CPC title

• F01D5/12

  Blades ({specially adapted for radial flow machines or engines F01D5/04}; blade roots F01D5/30; rotors with blades adjustable in operation F01D7/00; stator blades F01D9/02) · CPC title