IP Library Granted Patent US 10,415,424
Granted Patent B2
US 10,415,424 · App. 15/037,549 · Granted Sep 17, 2019

Balanced turbine engine portion and turbine engine

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Quick Facts
Patent No.
US 10,415,424
App. No.
15/037,549
Granted
Sep 17, 2019
Kind
B2
Abstract

A balanced turbomachine part including one angular sector arranged to form a balancing ring centered about a ring axis. The angular sector includes a plurality of fasteners, a bearing face having a complementary shape to the balancing ring, the angular sector bearing on the bearing face. The part further includes a plurality of balancing masses each fastened to the corresponding fastener of the angular sector, at least one of the balancing masses also acting as a fastener for fastening the angular sector on the bearing face.

Claims (25)

1. A balanced turbomachine part comprising:

at least one angular sector arranged to form a balancing ring centered about a ring axis, the angular sector including a plurality of fasteners each adapted to fasten at least one respective balancing mass, the fasteners each including a threading axis, all the threading axes substantially converging at a same point on the ring axis;

a bearing face having a shape complementary to the balancing ring, the angular sector bearing on the bearing face; and

a plurality of balancing masses each fastened to the corresponding fastener of the angular sector, at least one of the balancing masses also acting as a fastener for fastening the angular sector to the bearing face,

wherein the fasteners are nuts, and the balancing masses are screws,

wherein a perimeter of the balancing ring includes a plurality of nut locations substantially evenly distributed along the balancing ring, each of the nut locations including a through hole and a mounting system for mounting the nut, and

wherein the mounting system includes a portion of the balancing ring in a form of a side flare forming a nut support, a width of the nut support being greater than a width of the nut, the nut support including two side extensions presenting an L-shaped cross section.

2. The balanced turbomachine part according to claim 1 , wherein the angle of the angular sector is between 20° and 360°.

3. The balanced turbomachine part according to claim 1 , wherein the threading axis of each of the fasteners is substantially radially oriented with respect to the angular sector.

4. The balanced turbomachine part according to claim 1 , wherein each fastener is held in place by side extensions crimped by folding.

5. The balanced turbomachine part according to claim 1 , wherein the balancing ring has a cylindrical or frustro-conical revolution shape.

6. The balanced turbomachine part according to claim 1 , wherein the fasteners are substantially evenly distributed along the angular sector.

7. The balanced turbomachine part according to claim 1 , wherein the turbomachine part is a turbomachine inlet cone.

8. A method for balancing a turbomachine part comprising a bearing face, the method comprising:

providing at least one angular sector for forming a balancing ring centered about a ring axis, the angular sector including a plurality of fasteners each adapted to fasten at least one respective balancing mass, the fasteners each including a threading axis, all the threading axes substantially converging at a same point on the ring axis;

bringing the angular sector to bear on the bearing face of the turbomachine part to be balanced so as to form a balancing ring; and

fastening at least one balancing mass on one of the fasteners of the angular sector so as to fasten the angular sector and to balance the turbomachine part,

wherein the fasteners are nuts, and the balancing masses are screws,

wherein a perimeter of the balancing ring includes a plurality of nut locations substantially evenly distributed along the balancing ring, each of the nut locations including a through hole and a mounting system for mounting the nut, and

wherein the mounting system includes a portion of the balancing ring in a form of a side flare forming a nut support, a width of the nut support being greater than a width of the nut, the nut support including two side extensions presenting an L-shaped cross section.

9. A turbomachine comprising one balanced turbomachine part according to claim 1 .

10. The balanced turbomachine part according to claim 1 , wherein the mounting system includes two outgrowths extending radially inward on either side of the nut support, the outgrowths forming stops.

11. The balanced turbomachine part according to claim 10 , wherein each nut includes a platen including an aperture corresponding to the through hole at the nut location, a first face which abuts the nut support when the nut is positioning on the mounting system, and a second face including side edges which rest on the side extensions of the nut support.

12. The balanced turbomachine part according to claim 11 , wherein the aperture of the nut is extending by a sleeve that extends substantially perpendicular to the second face of the platen.

13. The balanced turbomachine part according to claim 1 , wherein the screws include a first screw and a second screw, a mass of the first screw being different than a mass of the second screw.

Assignments (3)
CORRECTIVE ASSIGNMENT TO CORRECT THE COVER SHEET TO REMOVE APPLICATION NOS. 10250419, 10786507, 10786409, 12416418, 12531115, 12996294, 12094637 12416422 PREVIOUSLY RECORDED ON REEL 046479 FRAME 0807. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Recorded Aug 24, 2018
From: SNECMA
To: SAFRAN AIRCRAFT ENGINES
Reel/Frame 046939/0336 →
CHANGE OF NAME Recorded May 23, 2018
From: SNECMA
To: SAFRAN AIRCRAFT ENGINES
Reel/Frame 046479/0807 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 18, 2016
From: LE STRAT, JEAN-LUC; POHIER, HERVE
To: SNECMA
Reel/Frame 038636/0412 →