EP3583300A1 - Composant d'étanchéité, en particulier pour rendre étanche un espace de vapeur à l'environnement ou deux espaces de vapeur avec des pressions différentes et utilisation d'un tel composant d'étanchéité - Google Patents

Composant d'étanchéité, en particulier pour rendre étanche un espace de vapeur à l'environnement ou deux espaces de vapeur avec des pressions différentes et utilisation d'un tel composant d'étanchéité

Info

Publication number
EP3583300A1
EP3583300A1 EP18714164.3A EP18714164A EP3583300A1 EP 3583300 A1 EP3583300 A1 EP 3583300A1 EP 18714164 A EP18714164 A EP 18714164A EP 3583300 A1 EP3583300 A1 EP 3583300A1
Authority
EP
European Patent Office
Prior art keywords
sealing component
support structure
sealing
base body
shaped
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.)
Withdrawn
Application number
EP18714164.3A
Other languages
German (de)
English (en)
Inventor
Ralf Bell
Anett Bergmann
Christoph Bieniakonski
Marius Busschulte
Stephan Ernst
Bora Kocdemir
Markus Legenbauer
Adam Maguire
Michael Oehmichen
Daniel Ostwald
Ulrich Stanka
Andreas Ulma
Niclas van der Lest
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP22162730.0A priority Critical patent/EP4036377B1/fr
Publication of EP3583300A1 publication Critical patent/EP3583300A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • 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
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0887—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by elastic deformation of the packing
    • 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
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
    • 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
    • F16J15/44—Free-space packings
    • F16J15/444—Free-space packings with facing materials having honeycomb-like structure
    • 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
    • F16J15/44—Free-space packings
    • F16J15/445—Free-space packings with means for adjusting the clearance
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/12—Covers for housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1103—Making porous workpieces or articles with particular physical characteristics
    • B22F3/1115—Making porous workpieces or articles with particular physical characteristics comprising complex forms, e.g. honeycombs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0433—Nickel- or cobalt-based alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/183—Two-dimensional patterned zigzag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/184—Two-dimensional patterned sinusoidal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/28—Three-dimensional patterned
    • F05D2250/283—Three-dimensional patterned honeycomb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/70—Shape
    • F05D2250/75—Shape given by its similarity to a letter, e.g. T-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/514—Porosity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/612—Foam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • Sealing component in particular for sealing a steam room to the environment or two steam rooms with different pressures and use of such
  • the invention relates to a sealing component, in particular for sealing a vapor space from the environment or two steam rooms with different pressures and the use of such.
  • FIG. 1 shows an example of a partial section through a valve with a valve housing 1, which is closed by a cover 2, wherein in a formed between the housing 1 and the lid 2 annular space such a metal ring 3 is inserted to seal the inner space of the valve housing 1 relative to the environment to achieve.
  • a sealing component in particular for sealing a vapor space with respect to the environment or two steam chambers with different pressures, comprising at least one ring-shaped or ring-segment-shaped, in cross-section at least substantially U-shaped main body, the two frontal walls and a the two front-side walls connecting jacket wall has up, wherein a support structure is provided within the body, which connects the two end walls together.
  • the at least one main body virtually forms the outer shell of the sealing component, which encloses the support structure at both axial edges and at the outer diameter and serves to delineate the pressure differences.
  • This is designed to be open inwardly, thus corresponds in particular to a ring (segment) -shaped hollow body which has no wall defining the inner circumferential surface. It can be an in
  • annular body or a plurality of ring-segment-shaped bodies which then preferably form a ring to form a seal assembly.
  • the supporting properties of the sealing element takes over the support structure arranged according to the invention in the at least one base body.
  • the main body can therefore be characterized by significantly lower wall thicknesses than the applicant known U-rings without support structure and the frontal walls of the body can be significantly more flexible and creep large deformations and / or locally varying creep in the area of the investment follow.
  • the support structure can also be widened in operation due to the operating pressure and thus cause an additional sealing effect.
  • the support structure arranged according to the invention within the at least one ring-shaped or ring-shaped base body may, for example, be honeycombed or lattice-shaped. Alternatively or additionally, the support structure may comprise a plurality of in particular parallel cylindrical support elements and / or tubular support elements.
  • the support structure has a plurality of elements, which are characterized by a cylindrical outer contour and are formed either as a solid or hollow body. If the support structure has cylindrical and / or tubular support elements, it is provided in particular that the one axial end of each cylindrical or tubular support element has the one end wall and the other axial end of the cylindrical or tubular support element with the other end wall of the Basic body is preferably integrally connected. In a particularly preferred embodiment, at least part of the tubular and / or cylindrical support elements extends, in particular all tubular and / or cylindrical support elements extend at least substantially in the axial direction of the ring-shaped or ring-segment-shaped main body.
  • all cylindrical or tubular support elements have the same diameter and / or the same length and / or - in the case of tubular Stützele- elements - the same wall thickness.
  • the support structure In the sealing element according to the invention, rigidity and, in particular, prestressing of the known U-rings are taken over by the support structure arranged in the interior of the main body.
  • the support structure can be biased during assembly, which causes an additional sealing effect.
  • the compression of the support structure represents a novel way of biasing.
  • Such a can via a Compression of the sealing element according to the invention, in particular by applying axial forces can be achieved from the outside on the two end walls of the body.
  • the compressibility of the support structure can be controlled, for example, via the angle or the wall thickness of elements in the support structure, for example, walls or walls defining the honeycomb or grid or the tubular and / or cylindrical support elements.
  • the sealing component according to the invention is preferably used in such a way that a higher pressure prevails in the interior of the base body, ie where the support structure is arranged, than on the outside of the base body. In operation, in particular a "puffing" of the body is caused and the sealing effect still favored.
  • the sealing element according to the invention is printed.
  • a generative or additive production method for example selective laser melting (SLM)
  • SLM selective laser melting
  • sealing component according to the invention is printed, that is manufactured by a generative production method, it is quickly available, in particular for a revision case. No conventional U-rings need to be procured or stored.
  • Another advantage is that the sealing component according to the invention can be specifically adapted to the respective chamber dimensions, so that an oversize is not required and an associated Adjustment processing is eliminated.
  • a further advantage of generative production is that pressure compensation bores can be flexibly implemented in the base body and / or in the support structure during the printing process. This can reduce the processing time, especially when using Nimonic materials.
  • the sealing component according to the invention can be used as a complete ring with a closed annular body and arranged therein support structure, or in the form of a
  • a plurality of sixteendowden ring segments each comprising a ring-segment-shaped base body having arranged therein support structure are printed.
  • a preparation of a non-closed ring but a plurality of ring segments may on the one hand be useful if the desired or required dimensioning of the (entire) ring exceeds the available pressure or processing space for the generative manufacturing. Regardless of the production by a generative process, segmentation may also be expedient for assembly reasons.
  • a particularly preferred embodiment of the sealing component according to the invention is characterized in that the support structure is formed integrally with the two end walls. This can be achieved, in particular, by using a generative production method, for example selective laser melting, for producing the sealing component according to the invention.
  • the support structure can furthermore be rotationally symmetrical with respect to the axis of rotation of the at least one ring-shaped or ring-shaped base body.
  • a further embodiment is characterized in that the support structure is designed such that its rigidity varies in the axial direction.
  • the rigidity can at least in sections of a frontal Wall seen from towards the other frontal wall increase.
  • the support structure can also be designed such that its rigidity varies in the circumferential direction of the main body and / or that its rigidity varies in the radial direction.
  • the rigidity may increase or decrease at least in sections in the circumferential direction and / or radial direction.
  • a significant advantage of the sealing component according to the invention lies in the fact that its freedom of movement can be adapted flexibly in particular to the deformation behavior of the abutment by means of a stiffness of the support structure which varies in one or more directions.
  • a stiffness of the support structure which varies in one or more directions.
  • the sealing component according to the invention it is possible with the sealing component according to the invention to make it more flexible in the affected areas. deformable designed.
  • the flexible design of the sealing component according to the invention reduces the risk of leaks even with a long operating time, which is of great advantage, above all in view of ever longer inspection intervals.
  • a particularly locally limited better deformability can be achieved with a locally limited lower rigidity of the support structure.
  • At least one end wall of the body is flat, preferably both end walls are flat.
  • a support structure is arranged in the base body of the sealing component according to the invention, it can further be provided that the wall thickness of at least one end wall of the base body varies in the radial direction and / or in the circumferential direction of the base body.
  • a particularly reliable sealing effect can be achieved. kung of the sealing component according to the invention can be achieved, since the end-face (s) wall (s) can follow at nominal operation and pressure of a larger bank displacement.
  • nickel-based steel alloys especially nickel-based high-temperature steel alloys or high-alloy steels with chromium and nickel have proven successful.
  • Nimonic As an example of a nickel-based high-temperature superalloys, those known by the trade name Nimonic are mentioned, and as an example of a high alloy steel containing chromium and nickel Xi 2 CrNii 8 _ 8 . In general, depending on the operating temperature, other materials are conceivable.
  • the wall thicknesses of the end walls and / or the jacket wall are preferably in the range of 0.1 to 7 mm, particularly preferably in the range 0.1 mm to 5 mm. Other values are not excluded.
  • wall thickness or wall thicknesses of the support structure for example of cylindrical tubular support elements of these and / or walls of a honeycomb or lattice-shaped
  • Support structure this can move in particular in the range of 0.1 to 3 mm.
  • a sealing component according to the invention in a steam turbine, it has, as regards the dimensioning of the base body proved to be expedient if its outer diameter up to about 1800 mm and / or its axial extent, ie its width up to about 50 mm and / or its height, which coincides with the length of the frontal walls in cross section, with the shell wall and the radial orientation of the frontal walls being formed, until it is about 100 mm.
  • These dimensions are to be understood as examples and other values are therefore not excluded.
  • Another embodiment of the sealing component according to the invention is characterized in that at least one through-hole is provided in at least one of the two end-side walls and / or in the jacket wall.
  • the through-bore (s) is / are then used in particular as a pressure equalization hole (s).
  • the jacket wall is characterized by a wave-shaped cross section.
  • a wavy surface structure of the jacket wall offers a greater freedom of deformation than a smooth (more rigid) surface, especially when prestressing the sealing component according to the invention. Regardless of the case of the bias and the sealing effect in the axial direction in operation is increased by the fact that a greater flexibility of the jacket wall is ready because the frontal walls move more and thus better can also follow larger deformations of the investment.
  • a sealing lip extending in the circumferential direction and in particular over the entire circumference of the base body is provided on the outside.
  • Another object of the present invention is the use of at least one sealing component according to the invention for sealing a vapor space in which a vapor pressure prevails over another vapor space in which prevails a vapor pressure of various other vapor pressure, or a space with ambient pressure.
  • valves, steam turbines, boilers and pressure vessels are named as places of use, in which with a sealing component according to the invention two steam chambers are sealed off from one another or a steam space from the environment can be. Other locations are not excluded.
  • the use according to the invention is preferably such that the outside surfaces of the base body are exposed to the smaller and the inside surfaces of the base body to the greater pressure of the two spaces. If used in this way, the body becomes "bloated" by the internal greater pressure and a particularly good sealing effect can be obtained.
  • Figure 1 is a partial section through a sealed by means of a conventional U-ring valve
  • FIG. 2 shows a perspective view of a first embodiment of a sealing component according to the invention with a support structure with tubular support elements;
  • FIG 3 is an enlarged partial perspective view of the sealing component according to the invention of Figure 2, wherein the front end-side wall is shown transparent;
  • FIG. 4 shows a further enlarged perspective partial view of the sealing component according to the invention from FIG. 2,
  • Figure 5 shows a cross section through the inventive
  • FIG. 6 shows a cross section through a second embodiment of a sealing component according to the invention, which has a grid-shaped supporting structure; and 7 shows a cross section through a third embodiment of a sealing component according to the invention, which has a honeycomb-shaped support structure.
  • Figure 1 shows a metal ring 3 with U-shaped cross-section, which is used in the applicant known manner, for example for sealing the interior of a closed by a cover 2 valve housing 1 to the environment for use. It is characterized by a wall thickness of about 5 mm.
  • the forged U-ring 3 has a comparatively long delivery time and must be procured via qualified suppliers. It was provided with oversize and adapted by subsequent mechanical processing in its outer dimensions to the intermediate space defined between the valve housing 1 and cover 2 for receiving it. This can also local leakage in the range of not uniformly occurring over the circumference of the metal ring 3 creep deformations of the investment banks 4, 5 are connected to cover 2 and housing 1.
  • the sealing component 6 comprises an annular main body 7 which is substantially U-shaped in cross-section and which comprises two end-side walls 8 and a jacket wall 9 connecting the two end-side walls 8.
  • Cross-sectional shape of the base body 7 can be taken in particular of Figure 5, which has a cross section through the
  • the outer diameter of the annular base body 7 is in the illustrated embodiment about 250 mm and the Inner diameter about 190 mm.
  • the axial extent of the body, so its width amounts to about 20 mm and the radial extent in cross section, ie the height to about 30 mm.
  • the two end walls 8 are flat and have a constant wall thickness of about 1 mm.
  • the jacket wall 9 in the illustrated exemplary embodiment has a wave-shaped cross section.
  • the wall thickness of the corrugated jacket wall 9 also amounts to about 1 mm. Of course, other values are not excluded.
  • a support structure 10 is provided within the base body 7 formed by the two end walls 8 and the jacket wall 9, a support structure 10 is provided according to the invention.
  • the support structure 10 is formed by a plurality of arranged in the base body 7, in the axial direction and parallel to each other extending tubular support members 11.
  • the axial direction is to be understood as meaning a direction coinciding with the axis of rotation 12 of the annular base body 7.
  • the wall thickness of the tubular support members 11 amounts in the present case to about 0.7 mm.
  • one axial end of each support element 11 is connected to one end wall 8 and the other axial end is connected to the other end wall 8 of the main body 7.
  • the connections of support elements 11 and end walls 8 are integral. This means that the main body 7 and the support structure 10 provided therein form a one-piece component.
  • the support structure can be adjusted individually based on the wall thickness and / or the angle of inclination.
  • the angle of inclination is defined by the orientation of the support elements 11 and the frontal walls 8.
  • the support elements can also run obliquely through the base body 7, so be oriented not orthogonal to the two end walls 8.
  • the rigidity can also be influenced.
  • base body 7 and support structure 10 are due to the fact that the thief component 7 according to the invention by selective laser melting of the
  • Powder bed was produced.
  • the base body 7 and the support structure 10 were built together in layers.
  • the powder bed included a metal powder of a high-alloy steel with chromium and nickel, specifically Xi 2 CrNii 8 _ 8 or also of another suitable material. Accordingly, both the main body 7, so the frontal walls 8 and the wavy casing wall 9 and all the support structure 10 forming tubular support members 11 made of this alloy.
  • sealing lip 13 On both end walls 8 a circumferential, over the entire circumference of the base body 7 extending sealing lip 13 is also provided on the outside, which was also formed in the context of selective laser melting from the powder bed for the preparation of the sealing component 7.
  • the sealing lips 13 are shown only in the figure 4, wherein only that sealing lip 13 can be seen, which extends to the forward-facing wall 8 in FIG.
  • an identical sealing lip 13 is provided at the other, in Figure 4 rearwardly facing end wall 8 of the base body 7, an identical sealing lip 13 is provided.
  • the two sealing lips 13 extend, as can be seen in FIG. 4, near the inner circumference of the end walls 8, ie they have a diameter which only slightly exceeds their inner diameter.
  • the sealing component 6 according to the invention has a arranged in the base body 7 support structure 10, which assumes the load-bearing properties of the sealing element 6, the front-side walls 8 and the jacket wall 9 can have a significantly lower wall thickness than the U-ring 3 from FIG. 1. If instead of the U-ring 3, the sealing component 6 according to the invention is shown in FIG used in a valve to seal the interior of the housing 1 with respect to the environment with less pressure, the frontal walls 8 of the body 7 can therefore much more flexible and large creep deformations in the area of the investment banks 4, 5 to cover 2 and housing 1 follow.
  • the comparatively thin-walled main body 7 Since the comparatively thin-walled main body 7 is exposed to a greater pressure on the inside than on the outside, it “swells up", as a result of which a particularly reliable sealing effect is achieved.
  • the wave-shaped design of the jacket wall 9 thereby promotes deformation due to the inside higher pressure, since the waveform offers greater freedom of deformation than a smooth, stiffer wall.
  • the sealing component according to the invention was made by printing, specifically selective laser melting of the powder bed, it is - especially in case of revision - quickly available and does not need to be kept long. Furthermore, a required target geometry can be obtained directly. A subsequent mechanical processing, as required for a forged part with oversize eliminated. As a result of the production by a generative process also greatest possible flexibility, as far as the specific design of both the support structure 10 and the base body 7 is concerned.
  • FIGS. 6 and 7 show two further embodiments of a sealing component 6 according to the invention, wherein-as in FIG. 5 for the first exemplary embodiment-a cross section through the sealing component 6 in the region of one half is shown.
  • the two further embodiments differ from those of FIGS. 1 to 5 alone by a differently configured support structure 10.
  • the same components are provided with the same reference numerals.
  • a grid-shaped support structure 10 is provided in the base body 7.
  • the support structure 10 is rotationally symmetrical with respect to the axis of rotation 12 of the base body 7.
  • the grid walls 14 of the support structure 10 are oriented parallel or orthogonal to the end walls 8.
  • Other orientations that are not parallel or orthogonal to the frontal walls 8 and / or grid walls 14 extending to each other are also possible.
  • a honeycomb-shaped support structure 10 which is also rotationally symmetrical in the circumferential direction with respect to the axis 12, is provided in the base body 7.
  • the honeycomb walls 15 of this support structure 10 another orientation than that shown is possible.
  • the sealing component is not integrally formed but comprises a plurality of segments, each having a ring segment-shaped base body having arranged therein support structure and in particular to a closed ring composed a sealing arrangement for the gap form between valve housing 1 and cover 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Gasket Seals (AREA)
  • Package Closures (AREA)

Abstract

L'invention concerne un composant d'étanchéité (6), en particulier pour rendre étanche un espace de vapeur à l'environnement ou deux espaces de vapeur avec des pressions différentes, comprenant au moins un corps de base (7) en forme d'anneau ou de segment d'anneau qui dispose d'une section transversale au moins sensiblement en U et de deux parois frontales (8) et d'une paroi d'enveloppe (9) reliant les deux parois frontales (8), une structure de support (10) étant prévue dans le corps de base (7) pour relier les deux parois frontales (8) ensemble. En outre, l'invention concerne l'utilisation d'un tel composant d'étanchéité (6).
EP18714164.3A 2017-04-10 2018-03-14 Composant d'étanchéité, en particulier pour rendre étanche un espace de vapeur à l'environnement ou deux espaces de vapeur avec des pressions différentes et utilisation d'un tel composant d'étanchéité Withdrawn EP3583300A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22162730.0A EP4036377B1 (fr) 2017-04-10 2018-03-14 Composant d'étanchéité, en particulier destiné à l'étanchéification d'un espace à vapeur par rapport à l'environnement ou de deux espaces à vapeur à des pressions différentes, ainsi qu'utilisation d'un tel composant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017206065.4A DE102017206065A1 (de) 2017-04-10 2017-04-10 Dichtungskomponente, insbesondere zur Abdichtung eines Dampfraumes gegenüber der Umgebung oder zweier Dampfräume mit unterschiedlichen Drücken sowie Verwendung einer solchen
PCT/EP2018/056336 WO2018188874A1 (fr) 2017-04-10 2018-03-14 Composant d'étanchéité, en particulier pour rendre étanche un espace de vapeur à l'environnement ou deux espaces de vapeur avec des pressions différentes et utilisation d'un tel composant d'étanchéité

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP22162730.0A Division EP4036377B1 (fr) 2017-04-10 2018-03-14 Composant d'étanchéité, en particulier destiné à l'étanchéification d'un espace à vapeur par rapport à l'environnement ou de deux espaces à vapeur à des pressions différentes, ainsi qu'utilisation d'un tel composant

Publications (1)

Publication Number Publication Date
EP3583300A1 true EP3583300A1 (fr) 2019-12-25

Family

ID=61827693

Family Applications (2)

Application Number Title Priority Date Filing Date
EP22162730.0A Active EP4036377B1 (fr) 2017-04-10 2018-03-14 Composant d'étanchéité, en particulier destiné à l'étanchéification d'un espace à vapeur par rapport à l'environnement ou de deux espaces à vapeur à des pressions différentes, ainsi qu'utilisation d'un tel composant
EP18714164.3A Withdrawn EP3583300A1 (fr) 2017-04-10 2018-03-14 Composant d'étanchéité, en particulier pour rendre étanche un espace de vapeur à l'environnement ou deux espaces de vapeur avec des pressions différentes et utilisation d'un tel composant d'étanchéité

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP22162730.0A Active EP4036377B1 (fr) 2017-04-10 2018-03-14 Composant d'étanchéité, en particulier destiné à l'étanchéification d'un espace à vapeur par rapport à l'environnement ou de deux espaces à vapeur à des pressions différentes, ainsi qu'utilisation d'un tel composant

Country Status (5)

Country Link
US (1) US20210086264A1 (fr)
EP (2) EP4036377B1 (fr)
DE (1) DE102017206065A1 (fr)
ES (1) ES2951978T3 (fr)
WO (1) WO2018188874A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670975A1 (fr) * 2018-12-17 2020-06-24 Dresser-Rand SAS Elément bague, garniture d'étanchéité pour arbre tournant et sa méthode de fabrication

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083975A (en) * 1959-04-13 1963-04-02 Aircraft Prec Products Inc Shaft seals
DE2618804C3 (de) * 1976-04-29 1978-11-23 Kempchen & Co Gmbh, 4200 Oberhausen Ganzmetalldichtung
GB9017173D0 (en) * 1990-08-06 1990-09-19 Specialist Sealing Ltd Static seal
US6357759B1 (en) * 1999-02-15 2002-03-19 Mitsubishi Cable Industries, Ltd. Jacket seal
EP1248023A1 (fr) * 2001-04-04 2002-10-09 Siemens Aktiengesellschaft Système d'étanchéité, pour utilisation en particulier dans une turbine à gaz, et turbine à gaz
WO2005119104A1 (fr) * 2003-11-04 2005-12-15 Advanced Components & Materials, Inc. Joints a ressorts haute temperature
JP5931708B2 (ja) * 2012-12-04 2016-06-08 三菱重工業株式会社 シール装置及び回転機械
DE102013212465B4 (de) * 2013-06-27 2015-03-12 MTU Aero Engines AG Dichtanordnung für eine Strömungsmaschine, eine Leitschaufelanordnung und eine Strömungsmaschine mit einer derartigen Dichtanordnung
DE102014002727A1 (de) * 2014-03-03 2015-09-03 Carl Freudenberg Kg Stangendichtung

Also Published As

Publication number Publication date
EP4036377A1 (fr) 2022-08-03
DE102017206065A1 (de) 2018-10-11
WO2018188874A1 (fr) 2018-10-18
EP4036377B1 (fr) 2023-06-07
US20210086264A1 (en) 2021-03-25
ES2951978T3 (es) 2023-10-26

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