Seal device

• US 7,744,096 B2
• Filed: 02/16/2005
• Issued: 06/29/2010
• Est. Priority Date: 02/18/2004
• Status: Active Grant

• Current Assignee: Eagle Engineering Aerospace Co., Ltd.
• Original Assignee: Eagle Engineering Aerospace Co., Ltd.
• Inventors: Kono, Toru
• Primary Examiner(s): Patel; Vishal
• Application Number:
  US11/058,197
• Publication Number:
  US 20050179215A1
• Time in Patent Office: 1,959 Days
• Field of Search: 277/637, 277/644, 277/654, 277/906, 415/135, 415/210.1
• US Class Current: 277/644
• CPC Class Codes: F01D 11/005 Sealing means between non relatively rotating elements
• CPC Class Codes: F01D 11/008 by spacer elements between the blades, e.g. independent interblade platforms
• CPC Class Codes: F05D 2240/55 Seals
• CPC Class Codes: F05D 2250/70 Shape
• CPC Class Codes: F16J 15/0887 the sealing effect being obtained by elastic deformation of the packing

Abstract

Primary objective of the present invention is to effect a seal against a variable clearance formed between assembly components which admit flows of high temperature fluids or are subjected to vibrations. Another objective is to reduce manufacture cost thereof. The seal device is comprised of seal strip, seal strip assemblage and a joint section, wherein the seal strip retains a first seal end section at one distal end of a thin seal base strip and a second seal end section at the other distal end of said seal base strip, wherein the seal strip assemblage arranges a plurality of said seal strips and retains a first outer circumferential seal face and a second outer circumferential seal face, the first outer circumferential seal face being disposed at the outer circumference of the first seal end section, the second outer circumferential seal face being disposed at the outer circumference of the second seal end section, wherein the joint section connects the seal strip assemblage so as to form an integral structure.

Claims

1. A seal device for effecting a seal between a first end surface of a first assembly component and a first end surface of a second assembly component opposing said first assembly component, wherein a first mount surface of a first mount space defined along said first end surface of said first assembly component and a second mount surface of a second mount space defined along said first end surface of said second assembly component oppose along a longitudinal axis extending from a first end of the first and second assembly components to a second end of the first and second assembly components opposing the first end of the first and second assembly components, the seal device comprising:

a seal strip assemblage formed by a plurality of seal strips comprising at least first, second and third seal strips, each seal strip comprising a base, a left end of the base having a first circular seal end, and a right end of the base opposite the left end having a second circular seal end;

wherein the base, the first circular seal end, and the second circular seal end of each of the first, second and third seal strips includes a front surface parallel to a back surface, the first, second and third seal strips being arranged sequentially relative to each other along the longitudinal axis,

wherein the back surface of the base, the first circular seal end and the second circular seal end of the first seal strip matingly engages the front surface of the base, the first circular seal end and the second circular seal end of the second seal strip, and the back surface of the base, the first circular seal end and the second circular seal end of the second seal strip matingly engages the front surface the base, first circular seal end and second circular seal end of the third seal strip, the base of each of the first, second and third seal strips including an aperture defined therein and extending from the front surface to back surface, and

wherein a connection bar or connection rod extends through the aperture in the base of each of the first, second and third seal strips in a direction that is parallel relative to the longitudinal axis, the longitudinal axis extending from the front surface of the first seal strip to the back surface of the third seal strip, the connection bar or connection rod providing the mating first, second and third seal strips torsional flexibility about the longitudinal axis.

2. The seal device as claimed in claim 1, wherein an outer peripheral surface of the first seal end of each of the first, second and third seal strips defines a first outer circular seal face and an outer peripheral surface of the second seal end of each of the first, second and third seal strips defines a second outer circular seal face, the first and second outer circular seal faces sealingly engaging the first and second mount surfaces, respectively.

3. The seal device as claimed in claim 1, wherein end sections of said connection bar or said connection rod are connected with said seal strip assemblage.

4. The seal device as claimed in claim 1, wherein said aperture defined in said base of each seal strip is aligned with an aperture defined in said base of said neighboring seal strip.

5. The seal device as claimed in claim 1, wherein upper and lower surfaces of the base of each seal strip connects the first circular seal end to the second circular seal end.

6. The seal device as claimed in claim 5, wherein at least one of the upper and lower surfaces of the base is planar.

7. The seal device as claimed in claim 5, wherein at least one of the upper and lower surfaces of the base is V-shaped.

8. The seal device as claimed in claim 1, wherein at least one of the first and second circular seal ends has a mouth defined therein, and wherein the at least one of the first and second circular seal ends having a C-shape.