# US 10,502,322 B2 · Split type brush seal device, brush seal pieces, and method of assembling split type brush seal device

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- Number: US 10,502,322 B2
- Document ID: US10502322B2
- Status: Granted
- Kind: B2
- Application number: 15/551,568
- Filed: 2016-03-03
- Published: 2018-02-15
- Granted: 2019-12-10
- Earliest claimed: 2015-03-09
- Assignees: Eagle Industry Co., Ltd.
- Applicants: Eagle Industry Co., Ltd.
- Inventors: Toru Kono; Ryu Kikuchi; Norihiko Saito
- Web page: https://patentgrep.com/patent/US10502322B2

## CPC

- F16J 15/3268: Mounting of sealing rings
- F01D 11/00: Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {; sealing arrangements for transition ducts of combustor cans F01D9/023})
- F01D 11/003: {by packing rings; Mechanical seals}
- F02C 7/28: Arrangement of seals
- F16J 15/22: shaped as strands, ropes, threads, ribbons, or the like
- F16J 15/328: Manufacturing methods specially adapted for elastic sealings (moulding B29C)
- F16J 15/3288: Filamentary structures, e.g. brush seals
- F05D 2230/60: Assembly methods
- F05D 2230/64: using positioning or alignment devices for aligning or centring, e.g. pins
- F05D 2240/56: Brush seals
- F05D 2260/30: Retaining components in desired mutual position
- F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

## Abstract

Provided is a split type brush seal device, brush seal pieces, and a method of assembling a split type brush seal device in which the brush seal pieces can be applied to an attached portion having an acceptable curvature. The split type brush seal device includes plural brush seal pieces having bundled wire rods, and attached members in which the plural brush seal pieces are attached to attached portions in the circumferential direction. Each of the brush seal pieces has a plate of arc shape to which the bundled wire rods are fixed. The split type brush seal device further includes a biasing member that forcibly cause a curvature of the plate to approximate to a curvature of the attached portion.

## Claims

### Claim 1

A split type brush seal device comprising:
a plurality of brush seal pieces having bundled wire rods; and
an attached member provided with a groove to which the plurality of brush seal pieces is attached in the circumferential direction, wherein:
each of the brush seal pieces has a plate of arc shape to which the bundled wire rods are fixed,
the attached member is provided with at least a screw hole which is opened at an inner periphery surface of the attached member and which has a center axis extending in a radial direction of the attached member, the screw hole being formed so as to be close to the plate but independent from the groove of the attached member,
the split type brush seal device further comprises a bolt having a screw portion and a head portion having a diameter larger than that of the screw portion,
the screw portion of the bolt is screwed into the screw hole of the attached member but not screwed into the plate,
the plate is provided with a first recess portion which has an arc shape in a circumferential cross section and which is capable of engaging with part of an periphery surface of the head portion of the bolt,
the diameter of the head portion has such a size that the head portion overlaps with the plate upon an engagement of the screw portion of the bolt and the screw hole of the attached member, and
the head portion of the bolt is, upon a screwing of the bolt into the screw hole, engaged with the first recess portion of the plate thereby fixing the plate to the attached member in a circumferential direction, and then brought into contact with the plate before the attached member thereby forcibly causing a curvature of the plate to approximate to a curvature of the groove of of the attached member.

### Claim 2 (depends on 1)

The split type brush seal device according to claim 1, wherein:
the plurality of brush seal pieces is attached to the attached member; and
each of the brush seal pieces has a mating structure for regulating radial movement mutually with the adjoining brush seal piece.

### Claim 3 (depends on 1)

The split type brush seal device according to claim 1, wherein
the attached member has a second recess portion which houses the head portion of the bolt in a cooperation with the first recess portion of the plate upon the screwing of the bolt into the screw hole.

### Claim 4 (depends on 3)

The split type brush seal device according to claim 3, wherein:
the plurality of brush seal pieces is attached to the attached member; and
each of the brush seal pieces has a mating structure for regulating radial movement mutually with the adjoining brush seal piece.