CN206054007U - The axially mounted brush steam seal of steam turbine - Google Patents
The axially mounted brush steam seal of steam turbine Download PDFInfo
- Publication number
- CN206054007U CN206054007U CN201620978269.1U CN201620978269U CN206054007U CN 206054007 U CN206054007 U CN 206054007U CN 201620978269 U CN201620978269 U CN 201620978269U CN 206054007 U CN206054007 U CN 206054007U
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- China
- Prior art keywords
- brush
- axially mounted
- ring body
- packing ring
- hole
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
This utility model is related to Steam Turbine Sealing Technologies field, especially a kind of axially mounted brush steam seal of steam turbine, and axially mounted brush steam seal is made up of the end to end labyrinth ring of multistage, and labyrinth ring includes：Packing ring body and brush ring, brush ring includes front plate, rear plate and the metal brush filament being folded between the front plate and the rear plate, brush ring is arranged on the front side of packing ring body, and the rear side of packing ring body has plush copper installation portion, and the direction of metal brush filament is identical with the axial direction of packing ring body.Steam turbine includes axle, impeller and dividing plate, and steam turbine is axially mounted brush for sealing the gap between the impeller of steam turbine and dividing plate；The front side of impeller has the packing mounting groove for slipping into plush copper installation portion；Metal brush filament is towards dividing plate.Axially mounted brush steam seal is installed between the impeller and dividing plate of steam turbine of the present utility model, the gap between impeller and dividing plate has been effectively sealed against, the cylinder efficiency of steam turbine is improve.
Description
Technical field
This utility model is related to Steam Turbine Sealing Technologies field, especially a kind of axially mounted brush steam seal of steam turbine.
Background technology
Packing is installed between the dynamic and static part of steam turbine, reduces or prevent that steam from leaking and inlet side air leaks into
Device.In order to reduce the gas leakage in the gap everywhere of steam turbine, ensure the operation of steam turbine normal safe again, therefore in steam turbine
Interior spy is provided with various packings, and whole labyrinth ring is constituted by multistage packing segmental arc body is end to end.The common packing of tradition is main
There are comb labyrinth gland and honeycomb steam seal etc. to seal firmly, in order to adapt to deformation and the eccentric motion of turbine rotor, prevent from connecing
Tactile rotor causes rotor abrasion, must leave sufficiently large gap, thus such sealing effectiveness is not to the utmost between labyrinth ring and rotor
Comply with one's wishes.
Flexible packing brush in recent years increasingly receives publicity, and brush steam seal is by front plate, rear plate and is clipped in both
Between metal brush filament composition brush ring be embedded on labyrinth casing, brush along rotor rotation reversely have certain inclination angle, so,
The brush filament of compliance can be inclined to absorb rotor radial skew, and is easy to recover closure state, as brush filament adapts to rotor
Moment it is eccentric and flexibly quickly make a concession, the phenomenon of damaging rotor will not occur, zero clearance seal is theoretically obtainable, pacify
General in dress that gap minimum is reduced to 0.05mm, labyrinth casing material size is identical with former packing, but installing gap only needs original to set
The 1/3 to 1/2 of evaluation, reduces flow area, and so as to reduce leakage, packing effect is good.
The direction of the brush filament of existing brush steam seal be it is identical with the radial direction of the rotating shaft of rotor, steam turbine two adjacent groups
There is between impeller and dividing plate gap, during wheel rotation, air-flow can enter gap between the two, form turbulent flow, have impact on steaming
The proper flow direction of vapour air-flow, and turbulent flow reduces the temperature of steam.Finally result in cylinder of steam turbine inefficiency.
Utility model content
The purpose of this utility model is to overcome the low problem of cylinder of steam turbine efficiency in prior art, and provides a kind of axially peace
Dress brush steam seal and the steam turbine using this axially mounted brush steam seal.
This utility model solves the technical scheme adopted by its technical problem：
A kind of axially mounted brush steam seal, it is characterised in that the brush steam seal is by the end to end packing ring group of multistage
Into the labyrinth ring includes：Packing ring body and brush ring, the brush ring include front plate, rear plate and are folded in the fore-clamp
Metal brush filament between plate and the rear plate, the brush ring are arranged on the front side of the packing ring body, the labyrinth ring sheet
The rear side of body has plush copper installation portion, and the direction of the metal brush filament is identical with the axial direction of the packing ring body.
Further, the section of the plush copper installation portion is for L-shaped and along the circumferentially extending of the packing ring body.
Further, the section of the plush copper installation portion is for T-shaped and along the circumferentially extending of the packing ring body.
Further, the front side of the packing ring body has brush ring mounting groove and riveting groove, and the brush ring is arranged on institute
State in brush ring mounting groove and the brush ring is riveted together with the packing ring body from the riveting groove.
Further, one groove is provided with front side of the packing ring body, the groove is slideway, is set on rear side of the groove
There are multiple axially extending top wire holes along the packing ring body, there is on the top wire hole screw thread, the axially mounted brush
The puller bolt that formula packing is also included spring and coordinated with the top wire hole screw thread, the brush ring slip into the vapour from the groove
In vivo, one end of the spring withstands on the rear end of the labyrinth ring to seal ring sheet, and the other end withstands on the front end of the puller bolt.
Further, the top wire hole is shoulder hole, including the first hole and the second hole that set gradually from front to back, described
Diameter of the diameter in the first hole less than second hole, the spring are arranged in first hole；Second hole is screw thread
Hole, is coordinated with the puller bolt.
Further, a diameter of 0.05～0.2mm of the metal brush filament, hardness >=80HB.
Further described metal brush filament is 20 °～60 ° with the angle of the axial direction of the packing ring body.
The axially mounted brush steam seal of a kind of steam turbine, it is characterised in that the axially mounted brush steam seal of the steam turbine is used for
Gap between the impeller and dividing plate of sealing steam turbine, the front side of the impeller has the packing for slipping into the plush copper installation portion
Mounting groove；The metal brush filament is towards the dividing plate.
Further, the axially mounted brush steam seal of the steam turbine is fixed with impeller riveting.
Compared with prior art, this utility model apparently has the advantages that：
1st, the plush copper installation portion of the axially mounted brush steam seal of steam turbine of the present utility model slips into the packing mounting groove of impeller,
It is easy for installation.
The 2nd, the axially mounted brush steam seal of steam turbine is installed, effectively between the impeller and dividing plate of steam turbine of the present utility model
Seal gap between impeller and dividing plate, improve the cylinder efficiency of steam turbine.
Description of the drawings
With reference to the accompanying drawings and examples this utility model is further illustrated.
Fig. 1 is one axially mounted brush steam seal front view of embodiment；
Fig. 2 is one axially mounted brush steam seal left view sectional view of embodiment；
Fig. 3 is one steam turbine schematic diagram of embodiment；
Fig. 4 is K portions enlarged drawing in Fig. 3；
Fig. 5 is two axially mounted brush steam seal left view sectional view of embodiment；
Fig. 6 is three axially mounted brush steam seal left view sectional view of embodiment.
In figure, 1, axle, 2, impeller, 21, packing mounting groove, 3, dividing plate, 4, axially mounted brush steam seal, 41, labyrinth ring sheet
Body, 411, plush copper installation portion, 412, brush ring mounting groove, 413, riveting groove, 414, groove, 415, top wire hole, the 4151, first hole,
4152nd, the second hole, 416, spring, 417, puller bolt, 42, brush ring, 421, front plate, 422, rear plate, 423, metal brush filament.
Specific embodiment
In order that technical problem, technical scheme and beneficial effect that this utility model is solved become more apparent, below
With reference to drawings and Examples, this utility model is further elaborated.It should be appreciated that described herein be embodied as
Example only to explain this utility model, is not used to limit this utility model.
In description of the present utility model, it is to be understood that term " radial direction ", " axial direction ", " on ", D score, " top ",
The orientation or position relationship of the instruction such as " bottom ", " interior ", " outward " is based on orientation shown in the drawings or position relationship, merely to just
In description this utility model and simplified description, rather than indicate or imply that the device or element of indication there must be specifically side
Position, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.In description of the present utility model
In, unless otherwise stated, " multiple " are meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " setting ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly
Connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art,
Concrete meaning of the above-mentioned term in this utility model can be understood as the case may be.
Embodiment one
Axially mounted brush steam seal as shown in Figure 1, is made up of four sections of end to end labyrinth rings, and labyrinth ring includes：Vapour
Seal ring body 41 and brush ring 42.As shown in Fig. 2 brush ring 42 includes front plate 421, rear plate 422 and is folded in 421 and of front plate
Metal brush filament 423 between rear plate 422, brush ring 42 are arranged on the front side of packing ring body 41, the rear side of packing ring body 41
With plush copper installation portion 411, the direction of metal brush filament 423 is identical with the axial direction of packing ring body 41.
In the present embodiment, the cross section of plush copper installation portion 411 is for L-shaped and along the circumferentially extending of packing ring body 41.
The front side of packing ring body 41 has brush ring mounting groove 412 and riveting groove 413, and brush ring 42 is arranged on brush ring mounting groove
Brush ring 42 is riveted together with packing ring body 41 in 412 and from riveting groove 413.
Steam turbine as shown in Figure 3 and Figure 4, including axle 1, impeller 2, dividing plate 3 and above-mentioned axially mounted brush steam seal 4, axle
It is used for sealing the gap between impeller 2 and dividing plate 3 to brush steam seal 4 is installed；The front side of impeller 2 has makes plush copper installation portion 411
The packing mounting groove 21 for slipping into；Metal brush filament 423 is towards dividing plate 3 (centerline axis parallel of direction i.e. wiry and axle 1).Axle
Fix to brush steam seal 4 is installed with the riveting of impeller 2.
In the present embodiment, 423 a diameter of 0.05～0.2mm of metal brush filament, hardness >=80HB, tensile strength >=800Mpa,
The axial direction close-packed arrays at an angle of metal brush filament 423 and packing ring body 41, thickness >=1.5mm, metal brush filament 423 with
The angle of the axial direction of packing ring body 41 is 20 °～60 °.
Embodiment two
As shown in figure 5, with the difference of embodiment one being, the section of plush copper installation portion 411 is for T-shaped and along labyrinth ring
Body 41 it is circumferentially extending.
Embodiment three
Axially mounted brush steam seal as shown in Figure 6, is provided with one groove 414, the groove 414 on front side of packing ring body 41
For slideway, the rear side of groove 414 is provided with multiple axially extending top wire holes 415 along packing ring body 41, has on top wire hole 415
There are screw thread, the puller bolt 417 that axially mounted brush steam seal is also included spring 416 and coordinated with 415 screw thread of top wire hole, brush ring 42
Slip in the packing ring body 41 from groove 414, one end of spring 416 withstands on the rear end of the labyrinth ring, the other end withstands on
The front end of puller bolt 417.
In the present embodiment, top wire hole 415 is shoulder hole, including the first hole 4151 and the second hole that set gradually from front to back
4152, the diameter in the first hole 4151 is less than the diameter in the second hole 4152, and spring 416 is arranged in the first hole 4151；Second hole
4152 is screwed hole, is coordinated with puller bolt 417.
Axially mounted brush steam seal has fabulous elasticity, metal brush filament 423 with dividing plate 3 collide mill when, can be with elasticity
Make a concession, and due to the effect in brush filament gap, make uniformly to become and main flow the direction of motion can be changed after flowing in brush filament
The vertical horizontal stream in direction, and then self sealss effect is generated, so as to further reduce leakage.With good seal performance and structure
The advantages of advantages of simple.
Above-mentioned is enlightenment according to desirable embodiment of the present utility model, by above-mentioned description, relevant staff
Various change and modification can be carried out in the range of without departing from this utility model technological thought completely.This practical
New technical scope is not limited to the content in description, it is necessary to determine which according to right technical
Scope.
Claims (8)
1. a kind of axially mounted brush steam seal, it is characterised in that the axially mounted brush steam seal is by the end to end vapour of multistage
Seal ring is constituted, and the labyrinth ring includes：Packing ring body (41) and brush ring (42), the brush ring (42) including front plate (421),
Rear plate (422) and the metal brush filament (423) being folded between the front plate (421) and the rear plate (422), the brush
Ring (42) is arranged on the front side of the packing ring body (41), and the rear side of the packing ring body (41) has plush copper installation portion
(411), the direction of the metal brush filament (423) is identical with the axial direction of the packing ring body (41).
2. axially mounted brush steam seal according to claim 1, it is characterised in that the horizontal stroke of the plush copper installation portion (411)
Section is for L-shaped and along the circumferentially extending of the packing ring body (41).
3. axially mounted brush steam seal according to claim 1, it is characterised in that the horizontal stroke of the plush copper installation portion (411)
Section is for T-shaped and along the circumferentially extending of the packing ring body (41).
4. axially mounted brush steam seal according to claim 1, it is characterised in that the front side of the packing ring body (41)
With brush ring mounting groove (412) and riveting groove (413), the brush ring (42) be arranged in the brush ring mounting groove (412) and from
The brush ring (42) is riveted together with the packing ring body (41) in riveting groove (413).
5. axially mounted brush steam seal according to claim 1, it is characterised in that set on front side of the packing ring body (41)
There is one groove (414), the groove (414) is slideway, on rear side of the groove (414), be provided with multiple along the packing ring body
(41) axially extending top wire hole (415), has screw thread on the top wire hole (415), the axially mounted brush steam seal is also
The puller bolt (417) coordinated including spring (416) and with the top wire hole (415) screw thread, the brush ring (42) is from described recessed
Groove (414) is slipped in the packing ring body (41), and one end of the spring (416) withstands on the rear end of the labyrinth ring, another
End withstands on the front end of the puller bolt (417).
6. axially mounted brush steam seal according to claim 5, it is characterised in that the top wire hole (415) is shoulder hole,
Including the first hole (4151) and the second hole (4152) that set gradually from front to back, the diameter of first hole (4151) is less than institute
The diameter of the second hole (4152) is stated, the spring (416) is arranged in first hole (4151)；Second hole (4152) is
Screwed hole, is coordinated with the puller bolt (417).
7. the axially mounted brush steam seal according to any one of claim 1-6, it is characterised in that the metal brush filament
(423) a diameter of 0.05～0.2mm, hardness >=80HB.
8. the axially mounted brush steam seal according to any one of claim 1-6, it is characterised in that the metal brush filament
(423) it is 20 °～60 ° with the angle of the axial direction of the packing ring body (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620978269.1U CN206054007U (en) | 2016-08-27 | 2016-08-27 | The axially mounted brush steam seal of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620978269.1U CN206054007U (en) | 2016-08-27 | 2016-08-27 | The axially mounted brush steam seal of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206054007U true CN206054007U (en) | 2017-03-29 |
Family
ID=58377626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620978269.1U Expired - Fee Related CN206054007U (en) | 2016-08-27 | 2016-08-27 | The axially mounted brush steam seal of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206054007U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194279A (en) * | 2016-08-27 | 2016-12-07 | 朱艳君 | The axially mounted brush steam seal of steam turbine |
| CN109441568A (en) * | 2018-11-16 | 2019-03-08 | 华电电力科学研究院有限公司 | A kind of efficient low voltage partition plate covering device and its assembly method |
-
2016
- 2016-08-27 CN CN201620978269.1U patent/CN206054007U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194279A (en) * | 2016-08-27 | 2016-12-07 | 朱艳君 | The axially mounted brush steam seal of steam turbine |
| CN109441568A (en) * | 2018-11-16 | 2019-03-08 | 华电电力科学研究院有限公司 | A kind of efficient low voltage partition plate covering device and its assembly method |
| CN109441568B (en) * | 2018-11-16 | 2024-04-19 | 华电电力科学研究院有限公司 | High-efficiency low-pressure baffle plate sleeve device and assembly method thereof |
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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 |
Granted publication date: 20170329 Termination date: 20170827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |