CN207583441U - A kind of spliced brush seal of circumference in equal parts - Google Patents
A kind of spliced brush seal of circumference in equal parts Download PDFInfo
- Publication number
- CN207583441U CN207583441U CN201721310184.7U CN201721310184U CN207583441U CN 207583441 U CN207583441 U CN 207583441U CN 201721310184 U CN201721310184 U CN 201721310184U CN 207583441 U CN207583441 U CN 207583441U
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- CN
- China
- Prior art keywords
- brush
- rear baffle
- front apron
- ring section
- brush ring
- Prior art date
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- 230000006837 decompression Effects 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000011218 segmentation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model is related to a kind of spliced brush seals of circumference in equal parts, belong to turbine seal technical field.The utility model includes front apron, rear baffle, brush wire bundle, is fixedly connected, stator, screw；Front apron is located at air-flow high pressure, rear baffle is located at air-flow low pressure, brush wire bundle is clamped and installed in by being fixedly connected between front apron and rear baffle, rear baffle contacts pressure-bearing surface with brush wire bundle and offers indent ring decompression slot, front apron, brush wire bundle, is fixedly connected with connection installation composition brush ring section at rear baffle, threaded hole is uniformly provided on the rear baffle of brush ring section, brush ring section is mounted on by the threaded hole on rear baffle and screw on stator, and brush ring section forms brush ring along the direction of brush filament established angle.The utility model can specific aim replace the brush ring section that is seriously worn of brush filament, avoid replacing entire brush ring and cause the wasting of resources；Leak low, sealing characteristics are good；It is easy to disassemble, easy to maintain；Under equal cost, the service life that can extend brush ring entirety is spliced in segmentation again, can be increased economic efficiency.
Description
Technical field
The utility model is related to a kind of spliced brush seals of circumference in equal parts, belong to turbine seal technical field.
Background technology
Brush seal as it is a kind of it is adaptable can interference seal form, labyrinth seal is replaced to be transported extensively in recent years
It uses in aero-engine, it is brush under the conditions of the high rotating speed of aero-engine, High Pressure Difference, the high such " three high " of boundary rotating speed
The sealing characteristics of sealing are by baptism.The front apron of brush seal is located at the high-pressure side of air-flow, and rear baffle is located at air-flow
Low-pressure side, brush filament and rotor radial center in 45 °~55 ° circumferential angles, arrangement be closely fixed on forward and backward baffle it
Between.A large amount of theory and practice both at home and abroad show it is mobile to radial direction by rotor runway in brush filament and after deviating, when rotor takes off
During from offset or deceleration, due to the frictional force between brush filament and backboard, brush filament is hung, and brush filament hysteresis effect, shadow occurs
Ring the seal performance of brush seal.
Due to the flexibility of brush seal brush filament so that brush seal is adapted between engine rotor and stator between transient state radial direction
The variation of gap or the eccentric motion of rotor, after long-term work, the circular runout of rotor leads to brush filament on brush ring circumference
The different degrees of abrasion in tip, influences its sealing characteristics, even results in seal failure.After a protracted use, brush Shu Duan
The adhesive wear of portion and rotor and gap is caused to increase, leakage increase, seal failure influence aero-engine performance, at this moment
Integral replacing brush ring is needed, if other positions of brush ring are not worn significantly, that will make a part of brush filament lose exploitation value
Value, causes the wasting of resources.
Utility model content
The purpose of this utility model is to provide a kind of spliced brush seal of circumference in equal parts, to solve because between rotor and stator
The variation of transient state radial clearance or the eccentric motion of rotor and generate in brush ring local brush filament serious wear and need it is whole more
The problem of changing, causing the wasting of resources.
The utility model is realized by following technical scheme：A kind of spliced brush seal of circumference in equal parts, including front apron 1,
Rear baffle 2, brush wire bundle 3 are fixedly connected with 8, stator 9, screw 10；Front apron 1 is located at air-flow high pressure, and rear baffle 2 is located at air-flow
At low pressure, brush wire bundle 3 is clamped and installed in by being fixedly connected with 8 between front apron and rear baffle 2, and rear baffle 2 is contacted with brush wire bundle 3
Pressure-bearing surface offers indent ring decompression slot 4, and ring decompression slot 4 can reduce " hesitation " of brush seal, 1 internal diameter of front apron
Concordant with the outer diameter of ring decompression slot 4 opened up on rear baffle 2, front apron 1, brush wire bundle 3, is fixedly connected with 8 connections at rear baffle 2
Installation forms brush ring section 6, is uniformly provided with threaded hole 5 on the rear baffle 2 of brush ring section 6, brush ring section 6 passes through the spiral shell on rear baffle 2
Pit 5 is mounted on screw 10 on stator 9, and brush ring section 6 forms brush ring 7 along the direction of brush filament established angle.
The brush ring 7 is made of N number of brush ring section 6, and N is 3~8.
A kind of operation principle of the spliced brush seal of circumference in equal parts is：It, will first according to the size of brush ring 7 in processing
The brush ring section 6 that its 7 perimeter of brush ring is divided into N parts designs, and Batch assemblage brush ring is carried out along the brush filament installation angular direction of brush wire bundle 3
Section 6, is then spliced into a brush ring 7 by the brush ring section 6 of this N equal portions, each brush ring section 6 is fixedly mounted by screw 10 successively
On stator 9.In use, the eccentric motion of the variation of transient state radial clearance or rotor 11 between rotor 11 and stator 9
The brush filament of the local brush wire bundle 3 of brush ring 7 is caused to destroy, is specifically brushed when in the case of local brush filament serious wear, finding at which
In ring segment 6, replaced, worked on using same type and intact brush ring section 6.Meanwhile the ring decompression slot that rear baffle 2 opens up
4 can lower " hesitation " of brush filament, reduce the leakage of gas, improve its sealing characteristics.
The utility model has the advantages that：
1st, can specific aim replace the brush ring section that is seriously worn of brush filament, avoid replacing entire brush ring and cause the wasting of resources；
2nd, leakage is low, and sealing characteristics are good；
3rd, it is simple in structure, easy to disassemble, easy to maintain；
4th, under equal cost, the service life that can extend brush ring entirety is spliced in segmentation again, can be increased economic efficiency.
Description of the drawings
Fig. 1 is the utility model brush ring segment structure front view；
Fig. 2 is the three dimensional structure diagram of the utility model brush ring section；
Fig. 3 forms brush ring structure diagram for the utility model by brush ring section；
Fig. 4 is the utility model brush ring section and stator mounting structure schematic diagram；
Fig. 5 is the utility model rear baffle three dimensional structure diagram.
In figure respectively marked as：1：Front apron, 2：Rear baffle, 3：Brush wire bundle, 4：Ring decompression slot, 5：Threaded hole, 6：Brush ring
Section, 7：Brush ring, 8：Be fixedly connected, 9：Stator, 10：Screw, 11：Rotor
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in further detail, but the content of the utility model is not
It is limited to the range.
Embodiment 1：As shown in Figs. 1-5, the spliced brush seal of a kind of circumference in equal parts, including front apron 1, rear baffle 2, brush
Tow 3 is fixedly connected with 8, stator 9, screw 10；Front apron 1 is located at air-flow high pressure, and rear baffle 2 is located at air-flow low pressure, brush filament
Beam 3 is clamped and installed in by being fixedly connected with 8 between front apron and rear baffle 2, and rear baffle 2 contacts pressure-bearing surface with brush wire bundle 3 and opens up
There is indent ring decompression slot 4,1 internal diameter of front apron is concordant with the outer diameter of ring decompression slot 4 opened up on rear baffle 2, front apron 1,
Rear baffle 2, brush wire bundle 3 are fixedly connected with 8 connections installation composition brush ring section 6, and screw thread is uniformly provided on the rear baffle 2 of brush ring section 6
Hole 5, brush ring section 6 are mounted on by the threaded hole 5 on rear baffle 2 and screw 10 on stator 9, and brush ring section 6 is along brush filament established angle
Direction composition brush ring 7.
Brush ring 7 is made of 3 brush ring sections 6.
Embodiment 2：As shown in Figs. 1-5, the spliced brush seal of a kind of circumference in equal parts, including front apron 1, rear baffle 2, brush
Tow 3 is fixedly connected with 8, stator 9, screw 10；Front apron 1 is located at air-flow high pressure, and rear baffle 2 is located at air-flow low pressure, brush filament
Beam 3 is clamped and installed in by being fixedly connected with 8 between front apron and rear baffle 2, and rear baffle 2 contacts pressure-bearing surface with brush wire bundle 3 and opens up
There is indent ring decompression slot 4,1 internal diameter of front apron is concordant with the outer diameter of ring decompression slot 4 opened up on rear baffle 2, front apron 1,
Rear baffle 2, brush wire bundle 3 are fixedly connected with 8 connections installation composition brush ring section 6, and screw thread is uniformly provided on the rear baffle 2 of brush ring section 6
Hole 5, brush ring section 6 are mounted on by the threaded hole 5 on rear baffle 2 and screw 10 on stator 9, and brush ring section 6 is along brush filament established angle
Direction composition brush ring 7.
Brush ring 7 is made of 5 brush ring sections 6.
Embodiment 3：As shown in Figs. 1-5, the spliced brush seal of a kind of circumference in equal parts, including front apron 1, rear baffle 2, brush
Tow 3 is fixedly connected with 8, stator 9, screw 10；Front apron 1 is located at air-flow high pressure, and rear baffle 2 is located at air-flow low pressure, brush filament
Beam 3 is clamped and installed in by being fixedly connected with 8 between front apron and rear baffle 2, and rear baffle 2 contacts pressure-bearing surface with brush wire bundle 3 and opens up
There is indent ring decompression slot 4,1 internal diameter of front apron is concordant with the outer diameter of ring decompression slot 4 opened up on rear baffle 2, front apron 1,
Rear baffle 2, brush wire bundle 3 are fixedly connected with 8 connections installation composition brush ring section 6, and screw thread is uniformly provided on the rear baffle 2 of brush ring section 6
Hole 5, brush ring section 6 are mounted on by the threaded hole 5 on rear baffle 2 and screw 10 on stator 9, and brush ring section 6 is along brush filament established angle
Direction composition brush ring 7.
Brush ring 7 is made of 8 brush ring sections 6.
Claims (2)
1. a kind of spliced brush seal of circumference in equal parts, it is characterised in that：Including front apron（1）, rear baffle（2）, brush wire bundle
（3）, be fixedly connected（8）, stator（9）, screw（10）；Front apron（1）At air-flow high pressure, rear baffle（2）It is low positioned at air-flow
At pressure, brush wire bundle（3）By being fixedly connected（8）It is clamped and installed in front apron and rear baffle（2）Between, rear baffle（2）With brush filament
Beam（3）Contact pressure-bearing surface offers indent ring decompression slot（4）, front apron（1）Internal diameter and rear baffle（2）On the annular that opens up subtract
Indent（4）Outer diameter it is concordant, front apron（1）, rear baffle（2）, brush wire bundle（3）, be fixedly connected（8）Connection installation composition brush ring section
（6）, brush ring section（6）Rear baffle（2）On be uniformly provided with threaded hole（5）, brush ring section（6）Pass through rear baffle（2）On screw thread
Hole（5）With screw（10）Mounted on stator（9）On, brush ring section（6）Brush ring is formed along the direction of brush filament established angle（7）.
2. circumference in equal parts according to claim 1 splices brush seal, it is characterised in that：The brush ring（7）By N number of brush ring
Section（6）Composition, N are 3~8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721310184.7U CN207583441U (en) | 2017-10-12 | 2017-10-12 | A kind of spliced brush seal of circumference in equal parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721310184.7U CN207583441U (en) | 2017-10-12 | 2017-10-12 | A kind of spliced brush seal of circumference in equal parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207583441U true CN207583441U (en) | 2018-07-06 |
Family
ID=62729147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721310184.7U Active CN207583441U (en) | 2017-10-12 | 2017-10-12 | A kind of spliced brush seal of circumference in equal parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207583441U (en) |
-
2017
- 2017-10-12 CN CN201721310184.7U patent/CN207583441U/en active Active
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| GR01 | Patent grant |