CN109630208A - A kind of tapered brush seal structure - Google Patents
A kind of tapered brush seal structure Download PDFInfo
- Publication number
- CN109630208A CN109630208A CN201811538290.XA CN201811538290A CN109630208A CN 109630208 A CN109630208 A CN 109630208A CN 201811538290 A CN201811538290 A CN 201811538290A CN 109630208 A CN109630208 A CN 109630208A
- Authority
- CN
- China
- Prior art keywords
- backboard
- foreboard
- tapered
- brush
- compacted position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/55—Seals
- F05D2240/56—Brush seals
Abstract
The application belongs to sealing structure field, in particular to a kind of tapered brush seal structure.It include: foreboard (1), backboard (2) and brush filament (3).The brush filament (3) is arranged between the foreboard (1) and the backboard (2), the plate face of the foreboard (1) and/or the backboard (2) is tapered, and the foreboard (1) and the radial width of the backboard (2) at outer diameter (4) are less than the foreboard (1) and the radial width of the backboard (2) at interior compacted position (6).The tapered brush seal structure of the application, the plate face of foreboard and/or backboard is designed using the conical surface, guarantee when foreboard and backboard compress brush filament, the brush filament of entire compacted position can be compressed uniformly, it can prevent brush filament uplift and deformation caused by local compaction, and local stress it is excessive caused by fracture of wire problem, and can solve at outer diameter that there are gap bring Welding Problems between brush filament, improve the quality of brush ring processing.
Description
Technical field
The application belongs to sealing structure field, in particular to a kind of tapered brush seal structure.
Background technique
Brush seal is a kind of new type sealing device that can substantially reduce gas leakage, is to continue to use the comb tooth of many years to seal
Most simple, most practical, most effective regeneration product.Brush seal is by foreboard, backboard and to be sandwiched in thin brush filament group between the two
At, three is connected using melting welding or other processes, between brush filament and runway be in 40~50 degree of angles.
Existing brush seal structure, foreboard and backboard are plane, are compressed by tooling.Since brush filament is at outer diameter
Different with the thickness of inner radius, which exists in process is compacted at interior compacted position, and it is not firm to there is pressure at outer diameter
Phenomenon, as shown in Figure 1.Due to being only compacted in interior compacted position, it will lead to uniform stress and cross ambassador's brush filament uplift and deformation, or even is disconnected
Silk；Before welding, it needs to process at the outer diameter to brush seal, guarantees that welding surface flushes, when processing can also be such that brush filament arranges
Column angle changes, and thus causes the variation of brush filament overall thickness, and then influences the leaking performance of brush seal and use the longevity
Life etc.；If outer radial position can not compress, there are larger gaps between brush filament, also can carry out some problems to welded bands, reduce welding matter
Amount.
Thus, it is desirable to have a kind of technical solution overcomes or at least mitigates at least one drawbacks described above of the prior art.
Summary of the invention
The purpose of the application there is provided a kind of tapered brush seal structure, with solve it is of the existing technology at least
One problem.
The technical solution of the application is:
A kind of tapered brush seal structure, comprising: foreboard, backboard and brush filament, the brush filament are arranged before described
Between plate and the backboard, the plate face of the foreboard and/or the backboard is tapered, and the foreboard and the backboard are in outer diameter
The radial width at place is less than the foreboard and radial width of the backboard at interior compacted position.
Optionally, the plate face of the foreboard is tapered, and the plate face of the backboard is plane.
Optionally, the plate face of the backboard is tapered, and the plate face of the foreboard is plane.
Optionally, the plate face of the foreboard and the backboard is tapered.
Optionally, the backboard is provided with step at interior compacted position.
A kind of design method of tapered brush seal structure, for processing tapered brush seal as described above
Structure, comprising:
Step 1: radial width of the brush filament at outer diameter, at interior compacted position and at compacted position is obtained；
Step 2: the radial width according to brush filament at outer diameter, at interior compacted position and at compacted position, by foreboard
And/or the plate face design of backboard is tapered.
Optionally, the step 2 specifically: according to brush filament at outer diameter, at interior compacted position and at compacted position
Radial width, the plate face design of foreboard is tapered.
Optionally, the step 2 specifically: according to brush filament at outer diameter, at interior compacted position and at compacted position
Radial width, the plate face design of backboard is tapered.
Optionally, the step 2 specifically: according to brush filament at outer diameter, at interior compacted position and at compacted position
The plate face of foreboard and backboard is designed to taper by radial width.
Optionally, backboard is provided with step at interior compacted position.
At least there are following advantageous effects in invention:
The plate face of foreboard and/or backboard is designed using the conical surface, is guaranteed by the tapered brush seal structure of the application
When foreboard and backboard compress brush filament, the brush filament of entire compacted position can be compressed uniformly, can be prevented caused by local compaction
Fracture of wire problem caused by brush filament uplift and deformation and local stress are excessive, and can solve at outer diameter that there are gap bands between brush filament
Welding Problems, improve the quality of brush ring processing, the application can the biggish processing technology for improving brush seal, can be with
It reduces the leaking performance of brush seal and improves the service life of brush seal.
Detailed description of the invention
Fig. 1 is the brush seal structure schematic diagram of the prior art；
Fig. 2 is the partial enlarged view of Fig. 1；
Fig. 3 is the tapered brush seal structure schematic diagram of one embodiment of the application；
Fig. 4 is the partial enlarged view of Fig. 3；
Fig. 5 is the tapered brush seal structure schematic diagram of the application another embodiment；
Fig. 6 is the partial enlarged view of Fig. 5.
Wherein:
1- foreboard；2- backboard；3- brush filament；4- outer diameter；5- internal diameter；Compacted position in 6-.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the application
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
In explanation the application, and it should not be understood as the limitation to the application.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall in the protection scope of this application.Under
Face is described in detail embodiments herein in conjunction with attached drawing.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of description the application and simplifies description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the application
The limitation of range.
3 to Fig. 6 the application is described in further details with reference to the accompanying drawing.
This application provides a kind of tapered brush seal structures, comprising: foreboard 1, backboard 2, and be arranged in foreboard 1
Brush filament 3 between backboard 2.
Specifically, the plate face of foreboard 1 and/or backboard 2 is tapered, wherein foreboard 1 is radially-wide at outer diameter 4 with backboard 2
Degree is less than foreboard 1 and radial width of the backboard 2 at interior compacted position 6.The application includes three kinds of schemes, one is foreboard 1
Plate face is tapered, and the plate face of backboard 2 is plane；Another kind is that the plate face of backboard 2 is tapered, and the plate face of foreboard 1 is plane；Third
Kind be foreboard 1 and backboard 1 plate face it is tapered.
It is above-mentioned tapered for processing present invention also provides a kind of design method of tapered brush seal structure
Brush seal structure, comprising:
Step 1: radial width of the brush filament at outer diameter, at interior compacted position and at compacted position is obtained；Step 2:
Radial width according to brush filament at outer diameter, at interior compacted position and at compacted position sets the plate face of foreboard and/or backboard
It counts tapered.
Specifically, step 2 includes three kinds of schemes.One is according to brush filament at outer diameter, at interior compacted position and compression
Radial width at position, the plate face design of foreboard is tapered；Another kind be according to brush filament at outer diameter, at interior compacted position
And the radial width at compacted position, the plate face design of backboard is tapered；The third be according to brush filament at outer diameter, internal pressure
Radial width at tight position and at compacted position, is designed to taper for the plate face of foreboard and backboard.
As shown in Figure 3 and Figure 4, in the embodiment of the application, according to brush filament 3 at outer diameter 4, interior compacted position
Radial width at 6 and at compacted position calculates the conical surface needed at foreboard 1.Brush ring is when compressing, since foreboard 1 is deposited
In the conical surface, the conical surface is corresponding in the thickness of different location with brush filament 3, it is ensured that when compressing, the brush filament 3 of entire compacted position
It can uniformly compress, avoid the problem that original structure only compresses at interior compacted position 6, be in straight close to the brush filament 3 of backboard 2
State is identical as 3 state of brush filament of original structure brush ring.
As shown in Figure 5 and Figure 6, in the another embodiment of the application, according to brush filament 3 at outer diameter 4, interior compression position
The radial width at 6 and at compacted position is set, the conical surface of needs is calculated, by the side of the 2 mean allocation conical surface of foreboard 1 and backboard
Formula distribution.For brush ring when compressing, since foreboard 1 and backboard 2 are there are the conical surface, the conical surface is opposite in the thickness of different location with brush filament 3
It answers, it is ensured that when compressing, the brush filament 3 of entire compacted position can be compressed uniformly, and original structure is avoided only to compress position inside
Set the problem of compressing at 6.In the present embodiment, in order to facilitate processing, and make the section between interior compacted position 6 and internal diameter 5 of brush filament 3
Brush filament 3 can freely extend, can the interior compacted position 6 of backboard 2 increase step, both prevent brush filament 3 from opening in interior compacted position 6
Beginning bends, and increases compensating groove at backboard 2, plays the role of reducing by 3 hysteresis effect of brush filament.
The tapered brush seal structure of the application, foreboard, backboard are designed using cone structure, guarantee that brush seal exists
The brush filament of entire compacted position can be compressed uniformly, and solving existing structure, only in interior compacted position, locally compacting bring brush filament is stuck up
Play deformation, fracture of wire caused by local stress is excessive, and the problem of in following process, brush filament arrangement angle changes, and energy
There are gap bring Welding Problems between brush filament at solution outer diameter, improve the quality of brush ring processing, while increasing also at backboard
Compensating groove, reaches the design effect of " low lag ".By the application can it is biggish improve brush seal processing technology,
The leaking performance of brush seal can also be reduced and improve the service life of brush seal.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of tapered brush seal structure characterized by comprising foreboard (1), backboard (2) and brush filament (3), institute
It states brush filament (3) to be arranged between the foreboard (1) and the backboard (2), the plate face of the foreboard (1) and/or the backboard (2)
It is tapered, and the foreboard (1) and the radial width of the backboard (2) at outer diameter (4) are less than the foreboard (1) and the back
Radial width of the plate (2) at interior compacted position (6).
2. tapered brush seal structure according to claim 1, which is characterized in that the plate face of the foreboard (1) is in
Taper, the plate face of the backboard (2) are plane.
3. tapered brush seal structure according to claim 1, which is characterized in that the plate face of the backboard (2) is in
Taper, the plate face of the foreboard (1) are plane.
4. tapered brush seal structure according to claim 1, which is characterized in that the foreboard (1) and the back
The plate face of plate (1) is tapered.
5. tapered brush seal structure according to claim 1, which is characterized in that the backboard (2) is described interior
Compacted position is provided with step at (6).
6. a kind of design method of tapered brush seal structure, for processing band described in claim 1 to 5 any one
The brush seal structure of the conical surface characterized by comprising
Step 1: radial width of the brush filament at outer diameter, at interior compacted position and at compacted position is obtained；
Step 2: the radial width according to brush filament at outer diameter, at interior compacted position and at compacted position, by foreboard and/or
The plate face design of backboard is tapered.
7. the design method of tapered brush seal structure according to claim 6, which is characterized in that the step 2
Specifically: the radial width according to brush filament at outer diameter, at interior compacted position and at compacted position designs the plate face of foreboard
It is tapered.
8. the design method of tapered brush seal structure according to claim 6, which is characterized in that the step 2
Specifically: the radial width according to brush filament at outer diameter, at interior compacted position and at compacted position designs the plate face of backboard
It is tapered.
9. the design method of tapered brush seal structure according to claim 6, which is characterized in that the step 2
Specifically: the radial width according to brush filament at outer diameter, at interior compacted position and at compacted position, by the plate of foreboard and backboard
Face is designed to taper.
10. the design method of tapered brush seal structure according to claim 6, which is characterized in that including backboard
Step is provided at compacted position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538290.XA CN109630208A (en) | 2018-12-16 | 2018-12-16 | A kind of tapered brush seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538290.XA CN109630208A (en) | 2018-12-16 | 2018-12-16 | A kind of tapered brush seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630208A true CN109630208A (en) | 2019-04-16 |
Family
ID=66074323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811538290.XA Pending CN109630208A (en) | 2018-12-16 | 2018-12-16 | A kind of tapered brush seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630208A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502786A (en) * | 2020-09-23 | 2021-03-16 | 中国航发沈阳发动机研究所 | Brush type sealing structure and processing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4202554A (en) * | 1978-05-17 | 1980-05-13 | Rolls-Royce Limited | Brush seals |
| US6808179B1 (en) * | 1998-07-31 | 2004-10-26 | Concepts Eti, Inc. | Turbomachinery seal |
| CN102425461A (en) * | 2011-12-27 | 2012-04-25 | 中国燃气涡轮研究院 | Low-hysteresis reeled and fixed brush type sealing device |
| WO2015005972A1 (en) * | 2013-07-11 | 2015-01-15 | United Technologies Corporation | Stationary non-rotating brush seals |
| CN107559052A (en) * | 2017-08-15 | 2018-01-09 | 沈阳航空航天大学 | A kind of one side is around core clamped-in style brush seal structure |
| CN107630721A (en) * | 2017-10-12 | 2018-01-26 | 昆明理工大学 | A kind of spliced brush seal of circumference in equal parts |
-
2018
- 2018-12-16 CN CN201811538290.XA patent/CN109630208A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4202554A (en) * | 1978-05-17 | 1980-05-13 | Rolls-Royce Limited | Brush seals |
| US6808179B1 (en) * | 1998-07-31 | 2004-10-26 | Concepts Eti, Inc. | Turbomachinery seal |
| CN102425461A (en) * | 2011-12-27 | 2012-04-25 | 中国燃气涡轮研究院 | Low-hysteresis reeled and fixed brush type sealing device |
| WO2015005972A1 (en) * | 2013-07-11 | 2015-01-15 | United Technologies Corporation | Stationary non-rotating brush seals |
| CN107559052A (en) * | 2017-08-15 | 2018-01-09 | 沈阳航空航天大学 | A kind of one side is around core clamped-in style brush seal structure |
| CN107630721A (en) * | 2017-10-12 | 2018-01-26 | 昆明理工大学 | A kind of spliced brush seal of circumference in equal parts |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502786A (en) * | 2020-09-23 | 2021-03-16 | 中国航发沈阳发动机研究所 | Brush type sealing structure and processing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101371064A (en) | Sealing arrangement | |
| CN109630208A (en) | A kind of tapered brush seal structure | |
| CN204671950U (en) | A kind of horizontal pressure filter diaphragm of rubber | |
| CN205371616U (en) | Glass and direct seal structure of intermetallic under high low -temperature vacuum environment | |
| CN106838313A (en) | A kind of cooling water tank finned tube sealing ring and the finned tube fixed plate using the sealing ring | |
| CN210356315U (en) | PA sintering filter core with good mechanical property | |
| CN208863041U (en) | A kind of earcap | |
| CN107542801A (en) | A kind of fan-shaped section roller connecting hose | |
| CN107061405B (en) | The dustproof construction of steel pipe size reducing machine hydraulic cylinder | |
| CN209178935U (en) | A kind of gas shield dam sealing safeguard structure | |
| CN207246272U (en) | A kind of fan-shaped section roller connecting hose | |
| CN206112061U (en) | V type supports steel band | |
| CN206264721U (en) | A kind of aluminium alloy valve anti-gas-leak protective cap | |
| CN208398440U (en) | A kind of compressor double suction port liquid storage device | |
| CN201806098U (en) | Aluminum foil fast food box | |
| CN207307313U (en) | Extractor flange three-piece | |
| CN104832652A (en) | High-pressure oil seal assembly | |
| CN212564566U (en) | Novel safety valve | |
| CN205715648U (en) | A kind of tooth pad | |
| CN106696616B (en) | A kind of aluminium alloy valve anti-gas-leak protective cap | |
| CN206951797U (en) | A kind of wire-drawing die core rod | |
| CN205352134U (en) | Plastic -aluminum radiator for tractor | |
| CN207222599U (en) | Double inclined plane wire-drawing die core rod | |
| CN213110442U (en) | Novel tungsten oxide storage bucket | |
| CN208478733U (en) | A kind of no-welding shielding construction in push-pull connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |
|
| RJ01 | Rejection of invention patent application after publication |