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A brush seal assembly is provided, including a sealing surface, a side plate, a backing plate, a plurality of bristles, and a biasing member. The backing plate is selectively located in a stationary position and has at least one backing tooth and a backing tip. The backing tooth has a tooth surface

A brush seal assembly is provided, including a sealing surface, a side plate, a backing plate, a plurality of bristles, and a biasing member. The backing plate is selectively located in a stationary position and has at least one backing tooth and a backing tip. The backing tooth has a tooth surface and the backing tip has a tip surface. A tooth clearance is measured between the tooth surface and the sealing surface. A tip clearance is measured between the tip surface and the sealing surface. The tooth clearance is less than the tip clearance. The bristles are located between the side plate and the backing plate. The bristles include an end portion for sealing to the sealing surface. The biasing member exerts a biasing force upon the backing plate in a direction towards the sealing surface. The backing tooth is configured for selectively contacting the sealing surface.

대표청구항 ▼

1. A brush seal assembly, comprising: a rotor sealing surface;a side plate;a machine housing;a backing plate operatively coupled proximate an upper surface of the backing plate to the machine housing and located in an initial position and having a backing tip and at least one backing tooth each proj

1. A brush seal assembly, comprising: a rotor sealing surface;a side plate;a machine housing;a backing plate operatively coupled proximate an upper surface of the backing plate to the machine housing and located in an initial position and having a backing tip and at least one backing tooth each projecting from a surface of the backing plate, wherein the at least one backing tooth has a tooth surface defining a tooth radially inner diameter and the backing tip having a tip surface defining a tip radially inner diameter, a tooth clearance being measured between the tooth surface radially inner diameter and the rotor sealing surface and a tip clearance being measured between the tip surface radially inner diameter and the rotor sealing surface, and the tooth clearance being less than the tip clearance;a plurality of bristles located between the side plate and the backing plate, the plurality of bristles including an end portion for sealing to the rotor sealing surface, and wherein the backing tip abuts against the plurality of bristles, wherein the backing tip directly abuts an end of the plurality of bristles located near the rotor sealing surface; anda biasing member positioned between the machine housing and the backing plate, and contacting both the housing and the backing plate for exerting a biasing force upon the backing plate in a direction towards the sealing surface, the at least one backing tooth configured for contacting the rotor sealing surface. 2. The brush seal assembly of claim 1, wherein backing tip is positioned along the backing plate to provide axial support to the plurality of bristles. 3. The brush seal assembly of claim 1, wherein the brush seal assembly is generally annular and includes a segmented configuration where the plurality of bristles are segmented into discrete portions around a circumference of the brush seal assembly. 4. The brush seal assembly of claim 1, wherein the machine housing is provided for receiving the brush seal assembly, and wherein the machine housing includes a shoulder for engaging a corresponding portion of the backing plate. 5. The brush seal assembly of claim 4, wherein the biasing member is located within a recess of the machine housing. 6. The brush seal assembly of claim 1, wherein the tip clearance ranges from about 0.3 millimeters to about 3.0 millimeters. 7. The brush seal assembly of claim 1, wherein the tooth clearance ranges from about 0.6 millimeters to about 3.4 millimeters. 8. The brush seal assembly of claim 1, wherein the sealing surface is an outer surface of a rotary member. 9. The brush seal assembly of claim 1, wherein the biasing member is one of a leaf spring, a wave spring or a coil spring. 10. A brush seal assembly, comprising: a rotor sealing surface;a side plate;a machine housing;a backing plate operatively coupled proximate an upper surface of the backing plate to the machine housing and located in an initial position and having a backing tip and at least one backing tooth each projecting from a surface of the backing plate, wherein the at least one backing tooth has a tooth surface defining a tooth inner diameter and the backing tip having a tip surface defining a tip radially inner diameter, a tooth clearance being measured between the tooth surface radially inner diameter and the rotor sealing surface and a tip clearance being measured between the tip surface radially inner diameter and the rotor sealing surface, and the tooth clearance being less than the tip clearance;a plurality of bristles located between the side plate and the backing plate, the plurality of bristles including an end portion for sealing to the rotor sealing surface, and the backing tip being positioned along the backing plate to provide axial support to and abutting against the plurality of bristles, wherein the backing tip directly abuts an end of the plurality of bristles located near the rotor sealing surface; anda biasing member positioned between the machine housing and the backing plate, and contacting both the housing and the backing plate for exerting a biasing force upon the backing plate in a direction towards the rotor sealing surface, the at least one backing tooth being configured for contacting the rotor sealing surface. 11. The brush seal assembly of claim 10, wherein the brush seal assembly is generally annular and includes a segmented configuration where the plurality of bristles are segmented into discrete portions around a circumference of the brush seal assembly. 12. The brush seal assembly of claim 10, wherein the machine housing is provided for receiving the brush seal assembly, and wherein the machine housing includes a shoulder for engaging a corresponding portion of the backing plate. 13. The brush seal assembly of claim 12, wherein the biasing member is located within a recess of the machine housing. 14. The brush seal assembly of claim 10, wherein the tip clearance ranges from about 0.3 millimeters to about 3.0 millimeters. 15. The brush seal assembly of claim 10, wherein the tooth clearance ranges from about 0.6 millimeters to about 3.4 millimeters. 16. The brush seal assembly of claim 10, wherein the biasing member is one of a leaf spring, a wave spring or a coil spring. 17. A brush seal segment in a seal assembly, comprising: a rotary member having a sealing surface;a side plate;a machine housing;a backing plate operatively coupled proximate an upper surface of the backing plate to the machine housing and located in an initial position and having a backing tip and at least one backing tooth each projecting from a surface of the backing plate, wherein the at least one backing tooth has a tooth surface defining a tooth radially inner diameter and the backing tip having a tip surface defining a tip radially inner diameter, a tooth clearance being measured between the tooth surface radially inner diameter and the rotor sealing surface and a tip clearance being measured between the tip surface radially inner diameter and the rotor sealing surface, the tooth clearance being less than the tip clearance;a plurality of bristles located between the side plate and the backing plate, the plurality of bristles including an end portion for sealing to the rotor sealing surface, the backing tip being positioned along the backing plate to provide axial support to and abutting against the plurality of bristles, the brush seal assembly being generally annular and including a segmented configuration where the plurality of bristles are segmented into discrete portions, wherein the backing tip directly abuts an end of the plurality of bristles located near the sealing surface; the machine housing for receiving the brush seal assembly, the machine housing including a shoulder and a recess, the shoulder engaging a corresponding portion of the backing plate; and a biasing member positioned between the machine housing and the backing plate, and contacting both the housing and the backing plate for exerting a biasing force upon the backing plate in a direction towards the sealing surface, the biasing member being located within the recess of the machine housing, the at least one backing tooth being configured for contacting the rotor sealing surface. 18. The brush seal assembly of claim 17, wherein the tip clearance ranges from about 0.3 millimeters to about 3.0 millimeters. 19. The brush seal assembly of claim 17, wherein the tooth clearance ranges from about 0.6 millimeters to about 3.4 millimeters.