Clip and pin balance for rotor

Patent metadata

Field	Value
Publication number	US-10907477-B2
Application number	US-201816011056-A
Country	US
Kind code	B2
Filing date	Jun 18, 2018
Priority date	Jun 18, 2018
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A balancing assembly for a rotating component of a gas turbine engine includes a balance pin configured for insertion into an opening in the rotating component, a balance clip configured for installation to the rotating component over the balance pin to retain the balance pin in the opening via exertion of a retention force on the balance pin. A method of correcting an imbalance of a rotating assembly includes inserting a balance pin into a balancing opening in a rotating component of the rotating assembly, and installing a balance clip at the balancing opening over the balance pin to retain the balance pin in the balancing opening via exertion of a retention force by the balance clip on the balance pin.

First claim

What is claimed is:

1. A balancing assembly for a rotating component of a gas turbine engine, comprising: a balance pin configured for insertion into an opening in the rotating component, the rotating component of the gas turbine engine including a disc, a platform extending from the disc, and a balancing flange extending from the platform, the opening disposed in the balancing flange; and a balance clip configured for installation to the balancing flange over the balance pin to retain the balance pin in the opening via exertion of a retention force on the balance pin; wherein the balance clip includes two clip arms extending from a clip base, the clip arms configured to extend along opposing sides of the balancing flange; and wherein a distance between the clip arms in a free state is less than a distance between the opposing sides of the balancing flange.

2. The balancing assembly of claim 1 , further comprising a curved clip arm tip to improve insertion of the balance clip onto the balancing flange.

3. The balancing assembly of claim 1 , wherein the balance pin includes a pin protrusion receivable into a clip opening in the balance clip.

4. The balancing assembly of claim 3 , wherein a pin shoulder is defined in the balance pin at the pin protrusion.

5. The balancing assembly of claim 1 , further comprising one or more grooves or scallops in the balance pin.

6. A rotating assembly of a gas turbine engine, comprising: one or more rotating components including one or more balancing openings, the rotating component of the gas turbine engine including a disc, a platform extending from the disc, and a balancing flange extending from the platform, the balancing opening disposed in the balancing flange; and a balancing assembly disposed at a balancing opening of the one or more balancing openings, including: a balance pin inserted into the balancing opening in the balancing flange; and a balance clip installed to the balancing flange over the balance pin to retain the balance pin in the balancing opening via exertion of a retention force on the balance pin; wherein the balance clip includes two clip arms extending from a clip base, the clip arms configured to extend along opposing sides of the balancing flange; and wherein a distance between the clip arms in a free state is less than a distance between the opposing sides of the balancing flange.

7. The rotating assembly of claim 6 , further comprising a curved clip arm tip to improve insertion of the balance clip onto the balancing flange.

8. The rotating assembly of claim 6 , wherein the balance pin includes a pin protrusion receivable into a clip opening in the balance clip.

9. The rotating assembly of claim 8 , wherein a pin shoulder is defined in the balance pin at the pin protrusion.

10. The rotating assembly of claim 6 , further comprising one or more grooves or scallops in the balance pin.

11. The rotating assembly of claim 6 , wherein the one or more rotating components includes a turbine rotor.

12. A method of correcting an imbalance of a rotating assembly of a gas turbine engine, comprising: inserting a balance pin into a balancing opening in a rotating component of the rotating assembly, the rotating component of the gas turbine engine including a disc, a platform extending from the disc, and a balancing flange extending from the platform, the balancing opening disposed in the balancing flange; and installing a balance clip at the balancing opening over the balance pin to retain the balance pin in the balancing opening via exertion of a retention force by the balance clip on the balance pin; wherein the balance clip includes two clip arms extending from a clip base, the clip arms configured to extend along opposing sides of the balancing flange; and wherein a distance between the clip arms in a free state is less than a distance between the opposing sides of the balancing flange.

13. The method of claim 12 , further comprising inserting a pin protrusion of the balance pin into a clip opening of the balance clip to retain the balance clip at the balance pin.

Assignees

• United Technologies Corp
• Raytheon Tech Corp

Inventors

• Oren Nicholas Waters

Classifications

• F01D11/001 Primary

  for sealing space between stator blade and rotor · CPC title

• F16F15/34

  Fastening arrangements therefor · CPC title

• F01D5/027 Primary

  Arrangements for balancing (for balancing rotating bodies in general F16F15/32; for compensating imbalance G01M1/36) · CPC title

• F05D2220/32

  in gas turbines · CPC title

• F04D29/662

  Balancing of rotors (compensating imbalance G01M1/36) · CPC title