Balance correction weight providing constant mass
View Patent ↗A system is provided for balancing a movable turbine part of a turbine or of a compressor. The system includes a balancing weight element with a first hole and a second hole and a fixing element. The first hole and the second hole are formed in such a manner that the fixing element is detachably insertable in either the first hole or the second hole. The first hole is formed in such a manner that the inserted fixing element in the first hole detachably couples the balancing weight element to the movable turbine part in a spatially fixed position. The second hole is formed in such a manner that the fixing element is receivable in the second hole.
1. A system for balancing a movable turbine part of a turbine or of a compressor, the system comprising
a balancing weight element with a first hole and a second hole, and
a single detachable fixing element,
wherein the first hole and the second hole are formed in such a manner that the single detachable fixing element is detachably insertable in either the first hole or the second hole,
wherein the first hole is formed in such a manner that the inserted fixing element in the first hole detachably couples the balancing weight element to the movable turbine part in a spatially fixed position,
wherein the second hole is formed in such a manner that the fixing element is receivable in the second hole, and
wherein when the balancing weight element has been non-detachably secured to the movable part, said fixing element is received within the second hole,
whereby the over-all weight of the system remains unchanged between a detachably spatially fixed position and a non-detachably secured position of the balancing weight element.
2. The system of claim 1 , further comprising
a permanent fixing element,
wherein the balancing weight element is fixable in a non-detachably manner in the spatially fixed position by the permanent fixing element.
3. The system of claim 2 , wherein the permanent fixing element is insertable in the first hole.
4. The system of claim 3 , wherein the permanent fixing element is selected from the group consisting of bolts, welding points and nails.
5. The system of claim 1 , wherein the first hole is a through hole and the second hole is a blind hole.
6. The system of claim 1 ,
wherein the single detachable fixing element comprises a screw, and
wherein the first hole and/or the second hole comprise a thread.
7. The system of claim 1 , wherein the balancing weight element is formed in such a manner that the balancing weight element is slideably coupleable to a coupling element of the movable turbine part.
8. The system of claim 7 , wherein the balancing weight element comprises a protrusion for being slideably coupleable inside the coupling element, wherein the coupling element comprises a groove.
9. The system of claim 7 , wherein the balancing weight element is formed in such a manner that the balancing weight element forms a dove tail connection with the coupling element.
10. A method of balancing a movable turbine part of a turbine or of a compressor, the method comprising
positioning a balancing weight element at a spatially fixed position of the movable turbine part,
detachably coupling the balancing weight element to the movable turbine part at the spatially fixed position by inserting a fixing element in a first hole of the movable turbine part,
testing whether the movable turbine part is balanced, and if the movable turbine part is balanced,
non-detachably fixing the balancing weight element at the spatially fixed position to the movable turbine part, and
inserting the fixing element in a second hole of the balancing weight element, when the balancing weight element is non-detachably fixed in the spatially fixed position.
11. The method of claim 10 , wherein the non-detachably fixing of the balancing weight element comprises peening, welding, brazing and/or adhesive bonding.