Device for determining the angular position of a pivotable compressor guide vane
View Patent ↗A device for determining the angular position of a compressor guide vane pivotable about the longitudinal axis thereof disposed in a compressor, associated with a synchronously rotating, flat measuring surface is provided. In order to allow particularly reliable, simple, and nearly error-free detection of the angular positions by means of a robust device, the angular position of the compressor guide vane rotatable about the longitudinal axis thereof is semi-automatically determined by means of the device. To this end, the device includes at least one mounting unit for temporarily fastening the device in alignment on the compressor, and a measuring unit including an angle measuring device having a rotary plate rotatable about the rotary axis, on which rotary plate a vertically protruding measuring arm extending parallel to the rotary axis is provided for making planar contact, via the free end thereof, with the measuring surface.
1. A device for determining the angle position of a compressor guide blade arranged in a compressor and is pivotable about its longitudinal axis and includes a measurement surface which pivots synchronously with the compressor guide blade, the device comprising:
a holding device for temporarily fixing the device to a housing of a compressor from the outside, and
a measurement unit arranged on the holding device and comprising an angle measurement device with a rotary plate which is rotatable about an axis of rotation, on which rotary plate is arranged a vertically projecting measurement arm,
wherein the measurement arm extends parallel to the axis of rotation and is provided so as to abut areally with its free end against the measurement surface.
2. The device as claimed in claim 1 , wherein the holding device is of U-shaped form with two flanks and with a web which connects the two flanks.
3. The device as claimed in claim 1 , wherein the measurement unit is arranged on the holding device via a carriage which is displaceable in a translatory fashion.
4. The device as claimed in claim 3 , wherein the carriage is displaceable perpendicular to the axis of rotation of the rotary plate and perpendicular to the flanks and parallel to the web.
5. The device as claimed in claim 3 , wherein the carriage is displaceable perpendicular to the axis of rotation of the rotary plate or perpendicular to the flanks and parallel to the web.
6. The device as claimed in claim 3 , wherein handles for gripping the device with two hands simultaneously are provided on the two web ends or flanks, in such a way that the carriage is displaced using a thumb.
7. The device as claimed in claim 1 , wherein the holding device comprises a plurality of magnets.
8. The device as claimed in claim 7 , wherein the holding device comprises a plurality of permanent magnets.
9. The device as claimed in claim 1 , wherein the device is fixed, so as to be aligned with respect to a reference element arranged on the compressor, by means of two thrust pieces.
10. The device as claimed in claim 1 , wherein the device includes a display for displaying the angle position that may be determined by the evaluating unit.
11. The device as claimed in claim 1 , wherein an angle position of 0° is detected when the measurement surface is in a reference position.
12. The device as claimed in claim 1 , wherein the determinable angle positions are stored, and from which the stored angle positions may be read out.