CA2381359A1 - Brush sealing ring - Google Patents
Brush sealing ring Download PDFInfo
- Publication number
- CA2381359A1 CA2381359A1 CA002381359A CA2381359A CA2381359A1 CA 2381359 A1 CA2381359 A1 CA 2381359A1 CA 002381359 A CA002381359 A CA 002381359A CA 2381359 A CA2381359 A CA 2381359A CA 2381359 A1 CA2381359 A1 CA 2381359A1
- Authority
- CA
- Canada
- Prior art keywords
- sealing ring
- sections
- core
- bristles
- brush
- 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.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
- F16J15/3288—Filamentary structures, e.g. brush seals
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Brushes (AREA)
- Motor Or Generator Current Collectors (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention relates to a brush sealing ring (1) for components that can be moved in relation to one another. The inventive ring comprises a ring-shaped housing (2) and a plurality of aramid fibre-based bristles which are fixed i n said housing and protrude radially or axially from the housing contour. The bristles consist of sections (5, 6) of aramid fibre-ropes or threads which a re present in a wound arrangement. Each section extends in a loop-shaped manner around a core (11) and away from said core without crossings, whereby the front faces of the section are tangent to the same surface. The sections are arranged in several layers one on top of the other and are fixed with a clamping profile (12) in a frictionally engaged manner.
Description
English Translation of P609410/WO/1 Attorney Docket No. 225MUI50870 Brush sealing ring The invention relates to a brush sealing ring for use as a sealing element between two components which can move relative to one another, as claimed in the preamble of Patent Claim 1.
Brush sealing rings of this type can be provided with bristles which protrude radially outwards, radially inwards or in an axially lateral direction. An installed brush sealing ring forms the actual brush seal by interacting with a smooth, wear-resistant component corresponding surface with a preferably circular cylindrical or planar geometry. In order to keep the bristles free of centrifugal forces, the brush sealing rings are generally installed fixed to the stator. In addition to rotating components, such as shafts, oscillating or quasi-static components which do not move very much can also be sealed with brushes, such a seal being non-hermetic, i.e. operating with a certain degree of leakage. The media which are to be sealed are preferably gaseous.
DE 3429 708 C1 protects a brush seal whose bristles are embodied as a composite of materials. Here, the core of the bristles is to be spring-elastic, i.e. deformable in a reversibly elastic fashion, and the coating of the bristle is to be a good thermal conductor and to reduce friction and wear. A
multiplicity of materials or combinations of materials which may be suitable in this sense are mentioned. Inter alia, reference is made to plastic as a core material or sheath material, and the table at the end of the description specifies Kevlar, i.e. aramid fibres, as a brush core material which can be metallically coated. The overall context, specifically the figures, indicate that here bristles are meant in the sense of straight, separate sections of material which have defined cross sections and which can be handled satisfactorily, for example grasped, bundled, clamped, English Translation of P609410/W011 Attorney Docket No. 225MUI50870 soldered, adhered, sintered etc.
Anyone familiar with the term "angel hair-like" structure of aramid fibre strands or threads etc. is aware of the fact that it is not possible to fashion them into bristles or brushes according to the abovementioned patent, or it is possible to do so only with an uneconomically high level of expenditure.
EP 0 211 275 B1 relates to a method including a device for manufacturing a brush seal using winding technology. Here, bristle material in thread form or wire form is wound over two parallel spikes, held with clamping bars and cut between the spikes. The resulting, initially straight brushes are bent to form rings and joined so that continuous brush sealing rings with bristles protruding on one side are obtained. The ends of the bristles can then be machined more precisely to a finished dimension by shortening. The patent is aimed mainly at metal and ceramics as bristle material, i.e. at "wire-like" hard material with a defined cross section. The silicon carbide fibre (SiC fibre) which is of particular interest in this context - in addition to metal - presents problems in that they can no longer be wound around narrow radii in the thickness which is preferred for brushes so that a core (spike) which is greater in cross section and a clamping section which is correspondingly greater in diameter is required.
The method protected by the EP Patent has to date been essentially used only for metal brushes.
DE 197 20 649 A1 deals with a brush seal having a special housing geometry which improves the support of the bristles during operation, i.e.
when there is a pressure difference, and as a result reduces the leakage.
The loop-like bristle arrangement around a wire core with securing by means of a clamping element is familiar. Such a brush sealing ring can
Brush sealing rings of this type can be provided with bristles which protrude radially outwards, radially inwards or in an axially lateral direction. An installed brush sealing ring forms the actual brush seal by interacting with a smooth, wear-resistant component corresponding surface with a preferably circular cylindrical or planar geometry. In order to keep the bristles free of centrifugal forces, the brush sealing rings are generally installed fixed to the stator. In addition to rotating components, such as shafts, oscillating or quasi-static components which do not move very much can also be sealed with brushes, such a seal being non-hermetic, i.e. operating with a certain degree of leakage. The media which are to be sealed are preferably gaseous.
DE 3429 708 C1 protects a brush seal whose bristles are embodied as a composite of materials. Here, the core of the bristles is to be spring-elastic, i.e. deformable in a reversibly elastic fashion, and the coating of the bristle is to be a good thermal conductor and to reduce friction and wear. A
multiplicity of materials or combinations of materials which may be suitable in this sense are mentioned. Inter alia, reference is made to plastic as a core material or sheath material, and the table at the end of the description specifies Kevlar, i.e. aramid fibres, as a brush core material which can be metallically coated. The overall context, specifically the figures, indicate that here bristles are meant in the sense of straight, separate sections of material which have defined cross sections and which can be handled satisfactorily, for example grasped, bundled, clamped, English Translation of P609410/W011 Attorney Docket No. 225MUI50870 soldered, adhered, sintered etc.
Anyone familiar with the term "angel hair-like" structure of aramid fibre strands or threads etc. is aware of the fact that it is not possible to fashion them into bristles or brushes according to the abovementioned patent, or it is possible to do so only with an uneconomically high level of expenditure.
EP 0 211 275 B1 relates to a method including a device for manufacturing a brush seal using winding technology. Here, bristle material in thread form or wire form is wound over two parallel spikes, held with clamping bars and cut between the spikes. The resulting, initially straight brushes are bent to form rings and joined so that continuous brush sealing rings with bristles protruding on one side are obtained. The ends of the bristles can then be machined more precisely to a finished dimension by shortening. The patent is aimed mainly at metal and ceramics as bristle material, i.e. at "wire-like" hard material with a defined cross section. The silicon carbide fibre (SiC fibre) which is of particular interest in this context - in addition to metal - presents problems in that they can no longer be wound around narrow radii in the thickness which is preferred for brushes so that a core (spike) which is greater in cross section and a clamping section which is correspondingly greater in diameter is required.
The method protected by the EP Patent has to date been essentially used only for metal brushes.
DE 197 20 649 A1 deals with a brush seal having a special housing geometry which improves the support of the bristles during operation, i.e.
when there is a pressure difference, and as a result reduces the leakage.
The loop-like bristle arrangement around a wire core with securing by means of a clamping element is familiar. Such a brush sealing ring can
2 English Translation of P609410/W0/1 Attorney Docket No. 225MU/50870 advantageously be fabricated using the method according to EP 0 211 275 B1. DE 197 20 649 A1 does not contain anything specific relating to the bristle material.
In view of the above, the object of the invention is to configure a brush sealing ring with aramid fibre-based bristles, which is distinguished by favourable manufacture, a definite and reproducible brush structure and a satisfactory and predictable sealing behaviour.
This object is achieved by means of the combination of features characterized in Claim 1, in conjunction with the genus-forming features in its preamble.
Surprisingly, it has been found that the fine "angel hair-like" strands or threads of aramid fibres can reliably be secured and oriented by clamping, i.e. frictional locking. The loop-shaped arrangement around a core gives rise to a particularly low-stress, reliable securing means by virtue of a large "clamping length" per bristle/section in contact with a clamping section which engages around it. An important aspect in terms of fabrication technology is that the bristles are sections of strands or threads which are present in a wound arrangement, because the aramid fibre material to be used can only be handled effectively using winding technology. It is to be noted that a brush of this kind does not have any clearly distinguishable, stiff bristles with defined cross sections but rather resembles a fine hair paintbrush with hair geometries which vary within limits.
Preferred embodiments of the brush sealing ring according to the main claim are characterized in the subclaims.
The invention will be explained in more detail below with reference to the
In view of the above, the object of the invention is to configure a brush sealing ring with aramid fibre-based bristles, which is distinguished by favourable manufacture, a definite and reproducible brush structure and a satisfactory and predictable sealing behaviour.
This object is achieved by means of the combination of features characterized in Claim 1, in conjunction with the genus-forming features in its preamble.
Surprisingly, it has been found that the fine "angel hair-like" strands or threads of aramid fibres can reliably be secured and oriented by clamping, i.e. frictional locking. The loop-shaped arrangement around a core gives rise to a particularly low-stress, reliable securing means by virtue of a large "clamping length" per bristle/section in contact with a clamping section which engages around it. An important aspect in terms of fabrication technology is that the bristles are sections of strands or threads which are present in a wound arrangement, because the aramid fibre material to be used can only be handled effectively using winding technology. It is to be noted that a brush of this kind does not have any clearly distinguishable, stiff bristles with defined cross sections but rather resembles a fine hair paintbrush with hair geometries which vary within limits.
Preferred embodiments of the brush sealing ring according to the main claim are characterized in the subclaims.
The invention will be explained in more detail below with reference to the
3 English Translation of P6094101W0/1 Attorney Docket No. 225MU/50870 drawing. The figure shows, in a view which is not to scale, a cross section, i.e. an axially radial section, through a brush sealing ring.
The brush sealing ring 1 has an annular, at least essentially rotationally symmetrical housing 2 as a supporting, protective and also sealing element. For reasons of fabrication, the latter is composed of two parts, a cover plate 3 and a supporting plate 4, which overlap here axially in the upper region and are connected in a positively locking fashion, preferably by means of beading. The longitudinal centre axis X of the brush sealing ring 1 is located here on the side of the housing 2 on which the bristles protrude from said housing 2. The bristles thus protrude regionally inwards towards the centre from the contour of the housing in order to interact with the central, round corresponding component, in particular a rotating shaft, in which case the axis of the corresponding component (not shown here) should be identical to the longitudinal centre axis X. The brush sealing ring could also be structured in such a way that the bristles protrude radially over its outer circumference in order, for example, to interact with a hollow shaft as a corresponding component. Taking the present view as a point of departure, the longitudinal centre axis would then have to lie above the sectioned housing.
A further embodiment of the brush sealing ring could also be such that the bristles protrude axially out of the housing in a lateral direction and interact with a corresponding component which is planar in the sealing region. Taking the present view as a point of departure, the longitudinal centre axis would then run vertically and lie laterally to the right or left of the housing section.
All these modifications do not have any influence on the essence of the invention.
The brush sealing ring 1 has an annular, at least essentially rotationally symmetrical housing 2 as a supporting, protective and also sealing element. For reasons of fabrication, the latter is composed of two parts, a cover plate 3 and a supporting plate 4, which overlap here axially in the upper region and are connected in a positively locking fashion, preferably by means of beading. The longitudinal centre axis X of the brush sealing ring 1 is located here on the side of the housing 2 on which the bristles protrude from said housing 2. The bristles thus protrude regionally inwards towards the centre from the contour of the housing in order to interact with the central, round corresponding component, in particular a rotating shaft, in which case the axis of the corresponding component (not shown here) should be identical to the longitudinal centre axis X. The brush sealing ring could also be structured in such a way that the bristles protrude radially over its outer circumference in order, for example, to interact with a hollow shaft as a corresponding component. Taking the present view as a point of departure, the longitudinal centre axis would then have to lie above the sectioned housing.
A further embodiment of the brush sealing ring could also be such that the bristles protrude axially out of the housing in a lateral direction and interact with a corresponding component which is planar in the sealing region. Taking the present view as a point of departure, the longitudinal centre axis would then run vertically and lie laterally to the right or left of the housing section.
All these modifications do not have any influence on the essence of the invention.
4 English Translation of P609410/W0/1 Attorney Docket No. 225MU/50870 The actual invention consists here in a structural design of the brush which is as appropriate as possible for the materials. The starting material for the bristles fibres is made of aromatic polyamides, i.e. aramid fibres, which tend to be known under the designation "Kevlar" or "Kevlar fibres".
The fibres are combined to form strands or threads which are available in a wound form. Sections which form the bristles of the brush are made of the strands or threads. Whether one considers such a section, or only a plurality of sections, as being a "bristle" is optional and ultimately insignificant.
In the case of aramid fibre brushes which exhibit a fine, soft structure, it would perhaps be better to speak of "brush hairs".
For the sake of clarification, only two sections 5, 6, i.e. "Bristles" are shown in the figure, the thickness of said bristles being an order of magnitude too large in the illustration and in reality tending to be in the region between a few thousandths and a few hundredths of millimetres. The sections 5, 6 are wrapped in the manner of a loop around a round core 11 and extend away from it on both sides without crossing over in such a way that in each case both end faces 7,9 and 8, 10 of each section 5 and 6 form tangents with the same - imaginary - face F which is at least approximately conformal with the surface of the corresponding component, i.e. corresponds here to a - spatial - circular cylindrical face with the longitudinal centre axis X. The slightly bent arrangement of the sections
The fibres are combined to form strands or threads which are available in a wound form. Sections which form the bristles of the brush are made of the strands or threads. Whether one considers such a section, or only a plurality of sections, as being a "bristle" is optional and ultimately insignificant.
In the case of aramid fibre brushes which exhibit a fine, soft structure, it would perhaps be better to speak of "brush hairs".
For the sake of clarification, only two sections 5, 6, i.e. "Bristles" are shown in the figure, the thickness of said bristles being an order of magnitude too large in the illustration and in reality tending to be in the region between a few thousandths and a few hundredths of millimetres. The sections 5, 6 are wrapped in the manner of a loop around a round core 11 and extend away from it on both sides without crossing over in such a way that in each case both end faces 7,9 and 8, 10 of each section 5 and 6 form tangents with the same - imaginary - face F which is at least approximately conformal with the surface of the corresponding component, i.e. corresponds here to a - spatial - circular cylindrical face with the longitudinal centre axis X. The slightly bent arrangement of the sections
5, 6 with lateral abutment against the supporting plate 4 reflects the operating conditions with excess pressure on the side of the cover plate 3, i.e. on the left-hand side. The sections 5, 6 are secured to the core 11 in a frictionally locking fashion by means of a C-shaped clamping section 12 English Translation of P609410/W0/1 Attorney Docket No. 225MU/50870 which is prestressed by means of elastic cross-sectional widening and which can be formed from a slotted tube. Outside the clamping region, i.e.
from the face F to the part 12, the sections 5, 6 run - in the unloaded state - in an essentially radial direction or in a radial direction and circumferential direction, i.e. with a defined attitude angle (up to approximately 450) in the circumferential direction. Obliquely positioned "bristles" are more pliant in the radial direction, i.e. they compensate better for deviations in position in the corresponding component. However, a rotation of the shaft is permitted only in the oblique direction of the "bristles". A person skilled in the art is familiar with this and there is therefore no need for it to be presented in more detail. The "bristles" are, according to the invention, sections 5, 6 of strands or threads made of aramid fibres which are present in a wound arrangement. According to a method cited at the beginning which is protected by a patent, the strands/threads are wound around two straight cores which are spaced apart in a parallel arrangement and are secured thereto by means of clamping sections. The windings are then displaced axially with respect to one another in order to generate an attitude angle. The windings are then cut centrally between the cores so that two identical, straight brushes, each with a core and clamping section, are produced. These are bent in an annular shape and joined at a joint by welding, soldering, adhering or the like, during which process care has to be taken to ensure that the plastic fibres are not damaged or destroyed thermally. Inter alia, a strut joint with solder points would be conceivable, in which case heat can be conducted away via the solder contacts. Each annular, coherent brush is integrated into a two-part - or multi-part - housing so that the desired brush sealing ring is obtained. The free, protruding bristle ends can then be machined more precisely to their dimensions (face F).
The tough, tear-resistant aramid fibres are relatively difficult to cut so
from the face F to the part 12, the sections 5, 6 run - in the unloaded state - in an essentially radial direction or in a radial direction and circumferential direction, i.e. with a defined attitude angle (up to approximately 450) in the circumferential direction. Obliquely positioned "bristles" are more pliant in the radial direction, i.e. they compensate better for deviations in position in the corresponding component. However, a rotation of the shaft is permitted only in the oblique direction of the "bristles". A person skilled in the art is familiar with this and there is therefore no need for it to be presented in more detail. The "bristles" are, according to the invention, sections 5, 6 of strands or threads made of aramid fibres which are present in a wound arrangement. According to a method cited at the beginning which is protected by a patent, the strands/threads are wound around two straight cores which are spaced apart in a parallel arrangement and are secured thereto by means of clamping sections. The windings are then displaced axially with respect to one another in order to generate an attitude angle. The windings are then cut centrally between the cores so that two identical, straight brushes, each with a core and clamping section, are produced. These are bent in an annular shape and joined at a joint by welding, soldering, adhering or the like, during which process care has to be taken to ensure that the plastic fibres are not damaged or destroyed thermally. Inter alia, a strut joint with solder points would be conceivable, in which case heat can be conducted away via the solder contacts. Each annular, coherent brush is integrated into a two-part - or multi-part - housing so that the desired brush sealing ring is obtained. The free, protruding bristle ends can then be machined more precisely to their dimensions (face F).
The tough, tear-resistant aramid fibres are relatively difficult to cut so
6 English Translation of P609410/WO/1 Attorney Docket No. 225MU/50870 that special cutting methods may be necessary. Apart from mechanical cutting, punching, edge-trimming etc., in particular laser beam cutting without and with cooling or water beam cutting without and with abrasive additives are conceivable here.
7
Claims (7)
1. Brush sealing ring for use as a sealing element between components which can move relative to one another, in particular between a rotor and a stator as an element which is fixed to the stator, having an annular housing and having a multiplicity of aramid fibre-based bristles which are attached within the housing and protrude radially or axially out of the contour of the housing and whose free end faces form tangents with an imaginary, rotationally symmetrical or planar face, the bristles being composed of sections of strands and/or threads of aramid fibres which are present in a wound arrangement, each section running in a loop shape around a core (11) extending away from it without crossing over in such a way that its two end faces form tangents with the same imaginary face (F) which is spaced apart from the core, and the sections being arranged around the core in a plurality of layers one on top of the other and being secured in a fixed fashion with a clamping section, characterized in that the strands and/or threads are composed exclusively of fine, angel hair-like aramid fibres, and that their sections (5, 6) are secured between the core (11) and the clamping section (12) exclusively by means of frictional locking.
2. Brush sealing ring according to Claim 1, characterized in that the core (11) is shaped from a metal wire with a round cross section and the clamping section (12) is shaped from a metallic round tube which is slotted in the longitudinal direction.
3. Brush sealing ring according to Claim 1 or 2, characterized in that, in addition to their, essentially, radial or axial orientation, the sections (5, 6) have a directional component in the circumferential direction outside the clamping region (12).
4. Brush sealing ring according to one or more of Claims 1 to 3, characterized in that the sections (5, 6) have end faces (7, 9; 8, 10) which are manufactured by mechanical cutting or shearing off, by laser beam cutting, if appropriate with water cooling ("laser micro jet process"), or by means of water jet cutting.
5. Brush sealing ring according to one or more of Claims 1 to 4, characterized in that the aramid fibres which are used as bristle material correspond in their chemical and physical structure to the Kevlar, Type 49, from DuPont.
6. Use of a sealing ring according to one or more of Claims 1 to 5, characterized in that it is configured for sealing predominantly gaseous fluids, including hydrogen.
7. Use of a sealing ring according to one or more of Claims 1 to 6 characterized in that it is configured for use in turbo machines of all kinds as well as in electric generators.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19937932A DE19937932C2 (en) | 1999-08-11 | 1999-08-11 | Brush sealing ring |
| DE19937932.7 | 1999-08-11 | ||
| PCT/DE2000/002621 WO2001013013A1 (en) | 1999-08-11 | 2000-08-05 | Brush sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2381359A1 true CA2381359A1 (en) | 2001-02-22 |
Family
ID=7917977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002381359A Abandoned CA2381359A1 (en) | 1999-08-11 | 2000-08-05 | Brush sealing ring |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1203178B1 (en) |
| JP (1) | JP4947865B2 (en) |
| AT (1) | ATE266826T1 (en) |
| CA (1) | CA2381359A1 (en) |
| DE (2) | DE19937932C2 (en) |
| ES (1) | ES2219394T3 (en) |
| WO (1) | WO2001013013A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9885246B2 (en) | 2012-07-24 | 2018-02-06 | Siemens Aktiengesellschaft | Sealing arrangement of a steam turbine in which a sealing liquid and a vapor steam extraction system are used |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10122732C2 (en) | 2001-05-10 | 2003-04-30 | Mtu Aero Engines Gmbh | Arrangement for a non-hermetic seal |
| DE10213530A1 (en) | 2002-03-26 | 2003-10-09 | Siemens Ag | Brush seal for media transfer in machine tools |
| US7677847B2 (en) | 2002-03-26 | 2010-03-16 | Siemens Aktiengesellschaft | Sealing assembly for a spindle |
| DE10324709A1 (en) * | 2003-05-30 | 2004-12-16 | Mtu Aero Engines Gmbh | Brush seal for sealing relatively movable components against a pressure drop |
| US7334311B2 (en) * | 2004-11-03 | 2008-02-26 | United Technologies Corporation | Method of forming a nested can brush seal |
| DE102005018584A1 (en) * | 2005-04-21 | 2006-10-26 | Deere & Company, Moline | Device, in particular rotary feedthrough |
| GB0619488D0 (en) | 2006-10-03 | 2006-11-08 | Cross Mfg 1938 Company Ltd | Brush seal assembly |
| US20080136112A1 (en) * | 2006-12-08 | 2008-06-12 | United Technologies Corporation | Brush seal assemblies utilizing a threaded fastening method |
| DE102008027021A1 (en) | 2008-06-06 | 2009-12-10 | Mtu Aero Engines Gmbh | Sealing arrangement for sealing gap between two components, particularly rotor and stator of turbo-engine, has brush seal with bristles, which is arranged partially in receiving space of housing |
| DE102008060371A1 (en) | 2008-12-03 | 2010-06-10 | Mtu Aero Engines Gmbh | brush seal |
| US20120326393A1 (en) * | 2011-06-27 | 2012-12-27 | General Electric Company | Brush seal |
| CN102493850A (en) * | 2011-12-30 | 2012-06-13 | 江苏透平密封高科技有限公司 | Non-welding type sealing brushing strip |
| FR2995379B1 (en) * | 2012-09-10 | 2014-09-05 | Commissariat Energie Atomique | CIRCULAR SEAL WITH BRUSH |
| US9753473B2 (en) | 2012-10-02 | 2017-09-05 | Northrop Grumman Systems Corporation | Two-stage low-dropout frequency-compensating linear power supply systems and methods |
| DE102013218913A1 (en) * | 2013-09-20 | 2015-03-26 | MTU Aero Engines AG | Brush seal and method of making a brush seal |
| DE102017002649B4 (en) | 2017-03-18 | 2020-12-10 | INPRO Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH | Freely guidable device and method for forming a freely guidable device for processing components by means of laser radiation |
| DE202024100126U1 (en) | 2024-01-12 | 2024-01-30 | MTU Aero Engines AG | Device for testing the creep behavior of brush seals |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2033026A (en) * | 1978-10-28 | 1980-05-14 | Rolls Royce | Brush seal manufacture |
| DE3305649C2 (en) * | 1983-02-18 | 1986-03-27 | Goetze Ag, 5093 Burscheid | Sealing ring with a device for preventing the penetration of dirt and a method for producing the sealing ring |
| DE3429708C1 (en) * | 1984-08-11 | 1986-01-02 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Brush seal |
| DE3606284A1 (en) * | 1985-07-31 | 1987-02-12 | Mtu Muenchen Gmbh | METHOD OF MANUFACTURING A BRUSH SEAL AND DEVICE FOR CARRYING OUT THE METHOD |
| JPH0328579A (en) * | 1989-06-26 | 1991-02-06 | Hitachi Ltd | Shaft seal for hydraulic machine |
| JP2898788B2 (en) * | 1990-11-29 | 1999-06-02 | 日本グリース株式会社 | Brush seal for tail of shield machine and its manufacturing method |
| US5165758A (en) * | 1991-08-07 | 1992-11-24 | Technetics Corporation | Place and bundle method for the manufacture of brush seals |
| JPH0616963U (en) * | 1992-08-05 | 1994-03-04 | 株式会社槌屋 | Sealing material to prevent leakage of powder |
| JPH06173586A (en) * | 1992-12-10 | 1994-06-21 | Nippon Guriisu Kk | Water sealing method of tail seal of shield machine |
| DE29600193U1 (en) * | 1996-01-08 | 1996-03-14 | MTU Motoren- und Turbinen-Union München GmbH, 80995 München | Brush seal with C-shaped clamping ring |
| DE19628559A1 (en) * | 1996-07-16 | 1998-01-29 | Mtu Muenchen Gmbh | Sealing device for parts rotating against each other |
| JP3492113B2 (en) * | 1996-09-30 | 2004-02-03 | 三菱重工業株式会社 | Journal bearing |
| DE19712088C2 (en) * | 1997-03-22 | 1999-06-24 | Mtu Muenchen Gmbh | Brush seal with bristles inclined in the circumferential direction |
| DE19720649C2 (en) * | 1997-05-16 | 2000-09-28 | Mtu Muenchen Gmbh | Brush seal |
| JPH1161101A (en) * | 1997-08-20 | 1999-03-05 | Tsuchiya Teisuko Kk | Sealing material for leak inhibition of fine powder |
-
1999
- 1999-08-11 DE DE19937932A patent/DE19937932C2/en not_active Expired - Fee Related
-
2000
- 2000-08-05 ES ES00962205T patent/ES2219394T3/en not_active Expired - Lifetime
- 2000-08-05 CA CA002381359A patent/CA2381359A1/en not_active Abandoned
- 2000-08-05 JP JP2001517074A patent/JP4947865B2/en not_active Expired - Lifetime
- 2000-08-05 EP EP00962205A patent/EP1203178B1/en not_active Expired - Lifetime
- 2000-08-05 WO PCT/DE2000/002621 patent/WO2001013013A1/en active IP Right Grant
- 2000-08-05 DE DE50006426T patent/DE50006426D1/en not_active Expired - Lifetime
- 2000-08-05 AT AT00962205T patent/ATE266826T1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9885246B2 (en) | 2012-07-24 | 2018-02-06 | Siemens Aktiengesellschaft | Sealing arrangement of a steam turbine in which a sealing liquid and a vapor steam extraction system are used |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19937932A1 (en) | 2001-03-22 |
| DE19937932C2 (en) | 2003-07-17 |
| DE50006426D1 (en) | 2004-06-17 |
| ES2219394T3 (en) | 2004-12-01 |
| WO2001013013A1 (en) | 2001-02-22 |
| ATE266826T1 (en) | 2004-05-15 |
| JP4947865B2 (en) | 2012-06-06 |
| EP1203178B1 (en) | 2004-05-12 |
| EP1203178A1 (en) | 2002-05-08 |
| JP2003507672A (en) | 2003-02-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |