Method for producing a shielding cartridge for a turbomachine element and corresponding shielding cartridge and turbomachine element

Patent metadata

Field	Value
Publication number	US-11454136-B2
Application number	US-201716468254-A
Country	US
Kind code	B2
Filing date	Dec 11, 2017
Priority date	Dec 14, 2016
Publication date	Sep 27, 2022
Grant date	Sep 27, 2022

Abstract

The invention relates to a method for producing a shielding cartridge (1) of a turbomachine element (10), said method comprising a step of winding a carbon wire (3) comprising a plurality of fibres about a longitudinal axis and a step of trapping and preserving the outside surroundings of the wound-up wire (3) in a housing (2).

First claim

The invention claimed is:

1. A method for producing a shielding cartridge of a turbomachine element, the method including:
winding a carbon wire about a longitudinal axis, the wound carbon wire including a plurality of fibers, and
trapping and preserving the wound carbon wire in a housing, wherein the housing is closed by a cover, the housing and the cover comprising a metallic material or a metallic alloy,
wherein the wound carbon wire is arranged in a plurality of rows in the housing, each row extending along a direction perpendicular to the longitudinal axis.

2. The method for producing according to claim 1 , wherein closing the housing by the cover is carried out by welding in a vacuum or in a neutral non-oxidizing atmosphere.

3. A shielding cartridge of a turbomachine element, including
a housing,
a carbon wire wound about a longitudinal axis, wherein the wound carbon wire is trapped and preserved from outside surroundings in said housing, wherein the wound carbon wire includes a plurality of fibers, and
a cover fixed to the housing, wherein the housing and the cover comprise a metallic material or a metallic alloy,
wherein the wound carbon wire is arranged in a plurality of rows in the housing, each row extending along a direction perpendicular to the longitudinal axis, and wherein the wound carbon wire is not fixed to the housing.

4. The shielding cartridge according to claim 3 , wherein the plurality of fibers include a polymeric material or a composite material.

5. The shielding cartridge according to claim 3 , wherein the plurality of fibers are made of polyacrylonitrile.

6. The shielding cartridge according to claim 3 , wherein a longitudinal section of the wound carbon wire is between 15,000 and 25,000 fibers per mm 2 .

7. The shielding cartridge according to claim 3 , wherein the wound carbon wire includes two free ends in the housing.

8. A turbomachine element, including the shielding cartridge according to claim 3 .

9. The shielding cartridge according to claim 3 , wherein the wound carbon wire is a single wire.

10. A shielding cartridge of a turbomachine element, comprising:
a housing,
a carbon wire wound about a longitudinal axis, wherein the wound carbon wire is trapped and preserved from outside surroundings in said housing, wherein the wound carbon wire includes a plurality of fibers, and
a cover fixed to the housing, wherein the housing and the cover comprise a metallic material or a metallic alloy,
wherein the wound carbon wire is arranged in a plurality of rows in the housing, each row extending along a direction perpendicular to the longitudinal axis,
wherein a longitudinal section of the wound carbon wire is between 15,000 and 25,000 fibers per mm 2 to increase absorption of energy.

11. A shielding cartridge of a turbomachine element, comprising:
a housing,
a carbon wire wound about a longitudinal axis, wherein the wound carbon wire is trapped and preserved from outside surroundings in said housing, wherein the wound carbon wire includes a plurality of fibers, and
a cover fixed to the housing, wherein the housing and the cover comprise a metallic material or a metallic alloy,
wherein the wound carbon wire is free of resin around rows of said wound carbon wire, each row of said wound carbon wire extending along a direction perpendicular to the longitudinal axis, and
and wherein the wound carbon wire is not fixed to the housing.

Assignees

• Safran Helicopter Engines

Inventors

• Meziere Ludovic

Classifications

• F01D25/243

  Flange connections; Bolting arrangements (F01D25/265 takes precedence) · CPC title

• B29C70/32 Primary

  on a rotating mould, former or core · CPC title

• B32B15/14

  next to a fibrous or filamentary layer · CPC title

• F01D25/246 Primary

  Fastening of diaphragms or stator-rings · CPC title

• F05D2220/36

  specially adapted for the fan of turbofan engines · CPC title