CN217081408U - Multistage brush type sealing structure - Google Patents
Multistage brush type sealing structure Download PDFInfo
- Publication number
- CN217081408U CN217081408U CN202220624612.8U CN202220624612U CN217081408U CN 217081408 U CN217081408 U CN 217081408U CN 202220624612 U CN202220624612 U CN 202220624612U CN 217081408 U CN217081408 U CN 217081408U
- Authority
- CN
- China
- Prior art keywords
- brush seal
- unit
- clamp plate
- seal unit
- stage
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 49
- 238000002788 crimping Methods 0.000 claims abstract description 8
- 210000001503 joint Anatomy 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Sealing Devices (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses a multistage brush seal structure, include: go-between, clamp plate and multistage brush seal unit, the one end of go-between is provided with the tang, the other end with the clamp plate is connected, brush seal unit crimping at each level in between go-between and the clamp plate, wherein, through pin interval connection between the adjacent brush seal unit, through the spacing butt joint of pin between clamp plate and the first order brush seal unit for prevent between the brush seal unit and the first order brush seal unit and the relative circumferential direction takes place for the clamp plate, it has the sealing washer still to press in between the adjacent brush seal unit, is used for reducing multistage brush seal structure's air leakage volume. This multistage brush seal structure, it is effectual to seal tightly, long service life.
Description
Technical Field
The utility model relates to a turbomachinery's dynamic seal field provides a multistage brush seal structure very much.
Background
The brush seal is an advanced flexible contact type dynamic seal structure, plays the key roles of preventing working medium leakage and saving energy and reducing consumption, is the simplest and most effective substitute product of the traditional labyrinth seal, and has important application in turbo machinery such as aircraft engines, gas turbines and the like. Currently, single-stage brush seals and multi-stage brush seals are widely used. According to different working conditions of the engine, the single-stage or multi-stage brush type sealing structure can be adaptively selected. Compared with a single-stage brush seal, the multi-stage brush seal has the advantages of higher pressure difference bearing capacity, better sealing performance and the like, and has important application in modern turbine machinery.
However, the conventional multi-stage brush type sealing structure has the following problems: 1. the sealing performance between the brush type sealing units in the multistage brush type sealing structure is poor, so that the condition that gas enters a gap between the brush type sealing unit and the sealing seat through the adjacent brush type sealing units to cause leakage is easy to occur, and the sealing effect is poor; 2. the adjacent brush seal units and the first-stage brush seal unit and the pressure plate can generate fluttering and further rotate due to air flow impact, the brush seal units are abraded, and the service life of the multi-stage brush seal structure is shortened.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a multistage brush seal structure to solve current multistage brush seal structure sealing performance poor, the short scheduling problem of life.
The utility model provides a technical scheme is: a multi-stage brush seal structure comprising: go-between, clamp plate and multistage brush seal unit, the one end of go-between is provided with the tang, the other end with the clamp plate is connected, brush seal unit crimping at different levels in between go-between and the clamp plate, wherein, connect through the pin interval between the adjacent brush seal unit, through the spacing butt joint of pin between clamp plate and the first order brush seal unit for prevent between the brush seal unit and the first order brush seal unit and take place relative rotation in circumference with the clamp plate, it has the sealing washer still to crimp between the adjacent brush seal unit, is used for reducing multistage brush seal structure's air leakage volume.
Preferably, the pressure plate and the brush seal unit are provided with pin holes corresponding to the pins.
Further preferably, the pressure plate and the connecting ring are fixedly connected with the stator casing in a pressing mode through bolts penetrating through the pressure plate and the connecting ring and nuts matched with the bolts.
Further preferably, the packing pressed between adjacent brush seal units is located outside a pin connecting the brush seal units.
More preferably, a seal ring is pressed between the pressure plate and the first stage brush seal unit.
The utility model provides a multistage brush seal structure, through the crimping sealing washer between adjacent brush seal unit, can reduce multistage brush seal structure's air leakage volume, through with between the adjacent brush seal unit and through pin spacing connection between clamp plate and the first order brush seal unit, can prevent between the brush seal unit and first order brush seal unit and clamp plate emergence relative circumferential direction, reduce because of the wearing and tearing that rotate relatively and lead to, can prolong multistage brush seal structure's life.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and embodiments:
fig. 1 is a schematic structural view of the multi-stage brush type sealing structure provided by the present invention.
Detailed Description
The invention will be further explained below with reference to specific embodiments, without limiting the invention.
As shown in fig. 1, the utility model provides a multistage brush seal structure for rotor 9 of obturating, include: go-between 1, clamp plate 2 and multistage brush seal unit 3, the one end of go-between 1 is provided with the tang, the other end with clamp plate 2 is connected, brush seal unit 3 crimping at different levels in between go-between 1 and clamp plate 2, wherein, connect through 4 intervals of pin between the adjacent brush seal unit 3, through 4 spacing butt joints of pin between clamp plate 2 and the first order brush seal unit 3 for prevent between the brush seal unit 3 and first order brush seal unit 3 and clamp plate 2 take place relative circumferential direction, it has sealing washer 5 to go back the crimping between the adjacent brush seal unit 3, is used for reducing multistage brush seal structure's air leakage volume.
This multistage brush seal structure, through the crimping sealing washer between adjacent brush seal unit, can reduce multistage brush seal structure's air leakage volume, through with between the adjacent brush seal unit and between clamp plate and the first order brush seal unit through the spacing connection of pin, can prevent that relative circumferential direction from taking place between the brush seal unit and first order brush seal unit and clamp plate, reduce the wearing and tearing that lead to because of the relative rotation, can prolong multistage brush seal structure's life.
As a modification of the above, as shown in fig. 1, pin holes corresponding to the pins 4 are provided in the pressure plate 2 and the brush seal unit 3, respectively.
As a technical improvement, as shown in fig. 1, the pressure plate 2 and the connection ring 1 are fixedly connected with a stator casing 8 by a bolt 6 passing through both simultaneously and a nut 7 engaged with the bolt.
As a technical improvement, as shown in fig. 1, a seal ring 5 pressed between adjacent brush seal units 3 is located outside a pin 4 connecting the brush seal units 3.
In order to further provide a sealing effect, as a modification of the technical solution, a sealing ring (not shown in the figure) is pressed between the pressure plate 2 and the first stage brush type sealing unit 3.
Taking the multi-stage brush seal structure shown in fig. 1 as an example, the assembly process of the multi-stage brush seal structure is as follows, wherein the multi-stage brush seal structure shown in fig. 1 sequentially comprises a first stage brush seal unit, a second stage brush seal unit and a third stage brush seal unit along an upstream stage and a downstream stage:
1) assembling a third-stage brush type sealing unit on the spigot of the connecting ring;
2) assembling a sealing ring to enable the sealing ring to be attached to the third-stage brush type sealing unit;
3) assembling a second-stage brush type sealing unit, and attaching the second-stage brush type sealing unit to the sealing ring, wherein the second-stage brush type sealing unit and the third-stage brush type sealing unit are connected at intervals through pins, and specifically, pin holes corresponding to the pins are correspondingly arranged on the second-stage brush type sealing unit and the third-stage brush type sealing unit;
4) assembling a sealing ring to enable the sealing ring to be attached to the second-stage brush type sealing unit;
5) assembling a first-stage brush type sealing unit and attaching the first-stage brush type sealing unit to the sealing ring, wherein the first-stage brush type sealing unit and the second-stage brush type sealing unit are connected at intervals through pins, and specifically, pin holes corresponding to the pins are correspondingly formed in the first-stage brush type sealing unit and the second-stage brush type sealing unit;
6) assembling a pressure plate, wherein the pressure plate is in butt joint with the first-stage brush sealing unit through a pin, and specifically: the pressing plate and the first-stage brush type sealing unit are correspondingly provided with pin holes corresponding to the pins;
7) the pressure plate, the connecting ring and the stator casing are connected together through bolts, and the components are axially pressed through nuts.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (5)
1. Multistage brush seal structure, its characterized in that includes: go-between (1), clamp plate (2) and multistage brush seal unit (3), the one end of go-between (1) is provided with the tang, the other end with clamp plate (2) are connected, brush seal unit (3) crimping at different levels in between go-between (1) and clamp plate (2), wherein, through pin (4) interval connection between adjacent brush seal unit (3), through the spacing butt joint of pin (4) between clamp plate (2) and first order brush seal unit (3) for prevent between the brush seal unit (3) and first order brush seal unit (3) and clamp plate (2) take place relative circumferential direction, still the crimping has sealing washer (5) between adjacent brush seal unit (3), is used for reducing multistage brush seal structure's air leakage volume.
2. The multi-stage brush seal structure of claim 1, wherein: and pin holes corresponding to the pins (4) are correspondingly arranged on the pressure plate (2) and the brush type sealing unit (3).
3. The multi-stage brush seal structure of claim 1, wherein: the pressure plate (2) and the connecting ring (1) are fixedly connected with the stator casing (8) in a pressing mode through bolts (6) penetrating through the pressure plate and the connecting ring simultaneously and nuts (7) matched with the bolts.
4. The multi-stage brush seal structure of claim 1, wherein: the seal ring (5) which is pressed between the adjacent brush seal units (3) is positioned on the outer side of the pin (4) which is connected with the brush seal units (3).
5. The multi-stage brush seal structure of claim 1, wherein: and a sealing ring is pressed between the pressure plate (2) and the first-stage brush type sealing unit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220624612.8U CN217081408U (en) | 2022-03-22 | 2022-03-22 | Multistage brush type sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220624612.8U CN217081408U (en) | 2022-03-22 | 2022-03-22 | Multistage brush type sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217081408U true CN217081408U (en) | 2022-07-29 |
Family
ID=82550420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220624612.8U Expired - Fee Related CN217081408U (en) | 2022-03-22 | 2022-03-22 | Multistage brush type sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217081408U (en) |
-
2022
- 2022-03-22 CN CN202220624612.8U patent/CN217081408U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220729 |