CN102588593A - End face brush seal device - Google Patents
End face brush seal device Download PDFInfo
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- CN102588593A CN102588593A CN201110009313XA CN201110009313A CN102588593A CN 102588593 A CN102588593 A CN 102588593A CN 201110009313X A CN201110009313X A CN 201110009313XA CN 201110009313 A CN201110009313 A CN 201110009313A CN 102588593 A CN102588593 A CN 102588593A
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- brush
- silk
- face
- slideway
- rotor
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Abstract
The invention discloses an end face brush seal, and particularly relates to an end face brush seal device for sealing gas between a rotating rotor (6) and a fixed sealed cavity (4). The end face brush seal device belongs to the field of dynamic gas sealing. Evenly and closely arrayed brush bristles (1) uniform in inclination direction are clamped into a ring shape by a brush clamping plate (2), are fixed onto the rotor (6) through a brush fixing shaft sleeve (3), and rotate around a rotation axis OO' along with the rotor (6). Free ends of the brush bristles (1) point to and fit with a slide way (5) perpendicular to the rotation axis OO' on the cavity (4), and the gas in the sealed cavity is stopped from leaking to the outside, so that the sealing effect is achieved. The end face brush seal device can be axially and radially in series connection according to the mounting size.
Description
Technical field
The present invention relates to a kind of brush seal installation that is used for fluid rotation machinery, the particularly gas motive sealing under the high-revolving operating mode of high temperature like compressor axle head and inter-stage sealing, seals between stage etc.
Background technique
The gas seal at high temperature of high rotating speed rotating equipment is a difficult point in the sealing technique always.High rotating speed forces the direct contact seal part that higher wear resistance must be arranged or makes sealing be in contactless state; Simultaneously high rotating speed can cause that very strong rotor displacement this means that Sealing will have higher elasticity or deformability to avoid the rigidity contact, and the compensatory preferably space of coming compensating shaft to beat and cause also will be arranged.High temperature means that all parts in the sealing configuration are all high temperature resistant, and the life-span preferably can not lost efficacy and have to sealing just like this.To this difficult problem, the sealing scholars are constantly developed novel seal to satisfy the needs of this type operating mode.
It is bigger that the labyrinth seal that is widely used in this operating mode at present belongs to the noncontact seal leakage rate, is difficult to satisfy seal request.And violent axle beats and can cause rotor to contact with the rigidity of Sealing, not only destroyed sealing configuration sealing effect is reduced greatly, also can cause nonvolatil destruction to rotor.
Wear resistance better and the stronger dry gas seals of sealability owing to adopt graphite annulus as main Sealing, and high temperature can influence the rerum natura of graphite annulus and do great damage in friction phase, makes dry gas seals can not be applicable to this operating mode.
The brush seal of Britain R.R company exploitation has been obtained good result through on the RB199 motor, making an experiment.Its main cause is because adopted the refractory metal silk.Refractory metal brush silk has high wear resistance and high temperature tolerance makes brush seal can be used for worst hot case, and the slideway of wear resistant coating manufacturing makes it can be applicable to high rotating speed operating mode.The elasticity of metallic brush silk also can hinder the beat rigidity contact that causes and fill up the leakage space that axle is beated and caused of axle, the life-span and the performance of the lower seal of guaranteeing to run up.
Summary of the invention
Conventional brush seal strengthens in the interference that voids on the bearing of trend of brush silk diminishes between the brush silk, and promptly whole arrangement tightness will be restricted.The present invention utilizes these advantages of refractory metal brush silk just and on original brush seal basis, carries out structure of modification; Brush silk contacted with curved surface between slideway make plane contact into; The brush silk is arranged more closely improved sealability; Can also make it can bear bigger rotor radial and beat, but and radial multi-stage easy for installation installation saving axial space.
The present invention adopts following technological scheme:
The end face brush seal installation comprises brush silk 1, and folder brush board 2 is admittedly brush axle sleeve 3, Seal cage 4 and slideway 5; It is characterized in that: arrange evenly closely; The consistent brush silk 1 of true dip direction is fixed on the rotor 6 by 2 clampings of folder brush board circlewise and through brushing axle sleeve 3 admittedly; With rotor 6 OO ' rotation around the shaft; Brush silk 1 free end points to and fits on the cavity 4 perpendicular to the slideway 5 of rotating shaft OO ', relies on brush silk 1 and the slideway 5 that cooperates with it constitutes end face seal form sealing gas.
The end face brush seal installation comprises brush silk 1, and folder brush board 2 is admittedly brush axle sleeve 3, Seal cage 4 and slideway 5; It is characterized in that: arrange evenly closely; The consistent brush silk 1 of true dip direction is fixed on the stator by 2 clampings of folder brush board circlewise and through brushing axle sleeve 3 admittedly; Brush silk 1 free end points to and fits on the rotor slideway 5 perpendicular to rotating shaft OO '; Slideway relies on the slideway 5 of brushing silk 1 and cooperating with it to constitute end face seal form sealing gas with rotor 6 OO ' rotation around the shaft.
Described brush silk 1 is constant to the free end dense degree from fixed end, and promptly brush silk district porosity ratio axially goes up constant at OO '.
Described brush silk 1 is a plane with slideway 5 faying surfaces, and this plane is vertical each other with running shaft OO '.
Described brush silk 1 one ends are fixed on folder brush board 2, and the other end points to slideway 5 and has a circumferential angle with rotating shaft OO ', wherein 0 °≤α≤45 °.
Described brush silk 1 is refractory metal brush silk, and silk directly is 0.01 to 0.1mm.
Described folder brush board 2 comprises the external splint that is positioned at the inboard inner splint of folder brush back brush ring and is positioned at the brush ring outside; Said inner splint is axially extended thin-walled ring, and inside and outside clamping plate will be brushed silk 1 with one heart and evenly also be fixed on closely between the inside and outside clamping plate.
Described end face brush seal installation can be at radially or axial plural serial stage.
The described axle sleeve 3 of brushing is admittedly fixed through fastening screw trip bolt and rotor or stator.
The present invention can obtain following beneficial effect:
The invention provides a kind of silk of brushing and arrange evenly the closely stronger end face brush seal installation of obstruction effect.Brush seal is by arranging a brush silk sealing gas closely, is exactly to improve the tightness that the brush silk is arranged if will improve the effective method of whole sealability.The present invention is fixed on refractory metal brush silk one end on the solid brush axle sleeve; It is equating with the radial distance of axis everywhere on the brush silk that the other end extends axially; Make that brush silk dense degree is constant on its bearing of trend; Interference for conventional brush seal between the brush silk is still less arranged tightr.Make that so the littler obstruction property to gas of brush silk district's porosity ratio is stronger, sealing effect is better.
The invention provides the more end face brush seal installation of greater trochanter skew of a kind of adaptation.The slip plane of brush silk free end on slideway is the plane perpendicular to rotating shaft in the end face brush seal; The brush silk does not leave slideway in rotor rotation and when producing big radial deflection; Therefore non-notch can accomplish the effect of sealing gas when bearing bigger radial deflection everywhere.The circumferential offset of brush silk makes the brush silk when fitting with slideway, have certain axial elasticity so that adapt to the axial dipole field of rotor.Therefore the present invention can guarantee sealing effect when adapting to bigger rotor displacement.
The invention provides a kind of can the selection according to installation conditions: the brush silk is fixed on the rotor, and slideway is sprayed on the stator like Fig. 1; Or brush silk is fixed on the stator, and slideway is sprayed on the rotor, like Fig. 2, accomplishes the brush seal installation that carries out gas seal between rotor and the stator, and the user can select neatly.
The invention provides a kind of can based on mounting condition select diametrically plural serial stage such as Fig. 3 or axially go up plural serial stage such as Fig. 4 to obtain the brush seal installation of better sealing effectiveness.
The invention provides a kind of easy-to-mount brush seal installation.Need only regulate Cock screw and just can realize the dismounting of all parts.
Description of drawings
Fig. 1 is the structural representation cross-sectional view of embodiments of the invention 1;
Fig. 2 is that brush silk of the present invention is installed partial enlarged drawing;
Fig. 3 be slideway according to the present invention on rotor, the exemplary construction schematic representation of brush ring on stator;
Fig. 4 is make progress an exemplary construction schematic representation of plural serial stage brush seal of footpath according to the present invention;
Fig. 5 is an exemplary construction schematic representation axially going up the plural serial stage brush seal according to of the present invention.
Among the figure: 1, brush silk, 2, the folder brush board, 3, brush axle sleeve admittedly, 4, Seal cage, 5, slideway, 6, rotor.
Embodiment
Do in conjunction with 1 couple of the present invention of accompanying drawing and to further describe:
As shown in Figure 1, the structural representation of a kind of embodiment of the present invention, the end face brush seal installation comprises brush silk 1, folder brush board 2 is admittedly brush axle sleeve 3, Seal cage 4, slideway 5 and rotor 6.
Wherein, brush silk 1 is the heat resistant and wear resistant fine wire, and brush silk 1 diameter is that 0.01mm-0.1mm decides according to actual conditions, and the high more brush filament diameter of sealing load is big more, and brush filament length degree will be decided according to installation conditions.Brush silk one end is fixed on the folder brush ring 2 that is embedded in the solid brush axle sleeve 3, and the other end points to slideway 5 and has a circumferential angle with rotating shaft OO '.Brush arrangement mode makes that brush silk dense degree is constant on its pointing direction; Interference for conventional brush seal between the brush silk still less; Porosity ratio is even and arrangement is tightr, and is therefore stronger to the inhibition that leaks, and is illustrated in figure 2 as the partial enlarged drawing of a brush installation.
Be divided into inner splint and external splint behind the folder brush board 2 folder brushes, inside and outside clamping plate are axially extended thin-walled ring and concentric, make bearing of trend be all axial brush silk 1 and are clipped in uniformly between the inner splint and external splint of brush board 2.Therefore each angle brush is thick the same on the brush silk district hoop, guarantees that each angle of brush district is identical to the inhibition that leaks.2 pairs of brush silks of folder brush board also play solid shape effect and prevent the distortion of brush silk in the operation process.The external splint of folder brush ring is than the short 2-3mm of brush silk free end, and inner splint is than the short 1mm-1.5mm of brush silk free end, these two values confirm mainly will consider the rotor displacement in the operation process, choosing of bigger these two values that squints is just big more.
There is an annular groove can the folder brush board 2 of clamping brush silk 1 axially be embedded admittedly brush axle sleeve 3, fixedly makes folder brush board 2 and brush axle sleeve 3 admittedly through Cock screw again to closely cooperate.Brush ring also can make splitted structure but each lobe has at least a Cock screw to fix after axle sleeve 3 is brushed in embedding admittedly.Admittedly brush axle sleeve 3 and rotor 6 transition fit, and will brush axle sleeve 3 admittedly through Cock screw and be fixed on the rotor 6.Make folder brush board 2 like this,, guarantee to brush the functions of silk 1 and rotor 6 synchronous rotations admittedly it is concentric and be fixed together to brush axle sleeve 3 and rotor 6.
It is parallel with the slideway 5 on the Seal cage 4 to be fixed on the free end end face that epitrochanterian brush silk 1 extends axially out, two faces applyings has just been guaranteed the sealing effect at this interface.When radial deflection took place rotor 6, because faying surface is perpendicular to axial direction, the steady slippage on slideway 5 of brush silk 1 free end did not break away from slideway 5, does not produce breach, has kept the sealing effect of end face brush seal.When axial dipole field took place rotor 6, the circumferential angle of brush silk 1 made it have certain elasticity in the axial direction with slideway 5 flexible contacts, does not also produce breach, has kept the sealing effect of end face brush seal.All adopt high-abrasive material owing to brush silk 1 with slideway 5 again, so the end face brush seal can be in the high-speed rotation of the simultaneous adaptation rotor 6 that keeps sealing effect.Whole high temperature resistant design makes it be adapted to worst hot case.
The present invention is easy for installation, can select bristle to be fixed on the rotor sliding way according to installation conditions and be sprayed on the stator and to be fixed on the stator sliding way like Fig. 1 or bristle and to be sprayed on the rotor like Fig. 3, accomplish the brush seal installation that rotor seals with respect to stator.
The present invention can select that plural serial stage is as shown in Figure 4 diametrically according to installation conditions, to obtain better sealing effect.
The present invention can adopt axially last plural serial stage as shown in Figure 5, to obtain better sealing effect.
Claims (9)
1. the end face brush seal installation comprises brush silk (1), and folder brush board (2) is admittedly brush axle sleeve (3), Seal cage (4) and slideway (5); It is characterized in that: arrange evenly closely; The consistent brush silk (1) of true dip direction is pressed from both sides brush board (2) clamping and is fixed on the rotor (6) circlewise and through brushing axle sleeve (3) admittedly; With rotor (6) OO ' rotation around the shaft; Brush silk (1) free end points to and fits in cavity (4) and goes up the slideway (5) perpendicular to rotating shaft OO ', dependence brush silk (1) and slideway (5) the formation end face seal form sealing gas that cooperates with it.
2. the end face brush seal installation comprises brush silk (1), and folder brush board (2) is admittedly brush axle sleeve (3), Seal cage (4) and slideway (5); It is characterized in that: arrange evenly closely; The consistent brush silk (1) of true dip direction is pressed from both sides brush board (2) clamping and is fixed on the stator circlewise and through brushing axle sleeve (3) admittedly; Brush silk (1) free end points to and fits on the rotor slideway (5) perpendicular to rotating shaft OO '; Slideway relies on brush thread (1) to reach the slideway (5) that cooperates with it and constitutes end face seal form sealing gas with rotor (6) OO ' rotation around the shaft.
3. according to claim 1 or the described end face brush seal installation of claim 2, it is characterized in that: described brush silk (1) is constant to the free end dense degree from fixed end, and promptly brush silk district porosity ratio axially goes up constant at OO '.
4. according to claim 1 or the described end face brush seal installation of claim 2, it is characterized in that: described brush silk (1) is a plane with slideway (5) faying surface, and this plane is vertical each other with running shaft OO '.
5. according to claim 1 or the described end face brush seal installation of claim 2; It is characterized in that: described brush silk (1) one end is fixed on folder brush board (2); The other end points to slideway (5) and has a circumferential angle with rotating shaft OO ', wherein 0 °≤α≤45 °.
6. according to claim 1 or the described end face brush seal installation of claim 2, it is characterized in that: described brush silk (1) is refractory metal brush silk, and silk directly is 0.01 to 0.1mm.
7. according to claim 1 or the described end face brush seal installation of claim 2, it is characterized in that: described folder brush board (2) comprises the external splint that is positioned at the inboard inner splint of folder brush back brush ring and is positioned at the brush ring outside; Said inner splint is axially extended thin-walled ring, and inside and outside clamping plate will be brushed silk (1) with one heart and evenly also be fixed on closely between the inside and outside clamping plate.
8. according to claim 1 or the described end face brush seal installation of claim 2, it is characterized in that: it can be at radially or axial plural serial stage.
9. according to claim 1 or the described end face brush seal installation of claim 2, it is characterized in that: the described axle sleeve (3) of brushing is admittedly fixed through fastening screw trip bolt and rotor or stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110009313XA CN102588593A (en) | 2011-01-17 | 2011-01-17 | End face brush seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110009313XA CN102588593A (en) | 2011-01-17 | 2011-01-17 | End face brush seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102588593A true CN102588593A (en) | 2012-07-18 |
Family
ID=46477660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110009313XA Pending CN102588593A (en) | 2011-01-17 | 2011-01-17 | End face brush seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102588593A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321376A (en) * | 2022-01-06 | 2022-04-12 | 安徽亚兰密封件股份有限公司 | Packaging mechanical sealing structure with spiral effect for submersible electric pump |
| CN114483211A (en) * | 2022-03-03 | 2022-05-13 | 南京航空航天大学 | Sealing device for reducing gap leakage |
| CN114635757A (en) * | 2022-02-23 | 2022-06-17 | 潍柴动力股份有限公司 | Rotor sealing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5480162A (en) * | 1993-09-08 | 1996-01-02 | United Technologies Corporation | Axial load carrying brush seal |
| CN101371020A (en) * | 2005-12-12 | 2009-02-18 | 伊顿公司 | Axial dynamic brush seal |
| CN101375089A (en) * | 2006-01-26 | 2009-02-25 | 西门子公司 | Multi-stage brush seal |
-
2011
- 2011-01-17 CN CN201110009313XA patent/CN102588593A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5480162A (en) * | 1993-09-08 | 1996-01-02 | United Technologies Corporation | Axial load carrying brush seal |
| CN101371020A (en) * | 2005-12-12 | 2009-02-18 | 伊顿公司 | Axial dynamic brush seal |
| CN101375089A (en) * | 2006-01-26 | 2009-02-25 | 西门子公司 | Multi-stage brush seal |
Non-Patent Citations (1)
| Title |
|---|
| 朱宗举: "刷式密封的设计与应用", 《燃气轮机技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321376A (en) * | 2022-01-06 | 2022-04-12 | 安徽亚兰密封件股份有限公司 | Packaging mechanical sealing structure with spiral effect for submersible electric pump |
| CN114635757A (en) * | 2022-02-23 | 2022-06-17 | 潍柴动力股份有限公司 | Rotor sealing device |
| CN114635757B (en) * | 2022-02-23 | 2023-12-12 | 潍柴动力股份有限公司 | Rotor sealing device |
| CN114483211A (en) * | 2022-03-03 | 2022-05-13 | 南京航空航天大学 | Sealing device for reducing gap leakage |
| CN114483211B (en) * | 2022-03-03 | 2022-12-27 | 南京航空航天大学 | Sealing device for reducing gap leakage |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |