WO2023285192A1 - Spaltrohr für eine elektrische rotierende maschine, herstellungsverfahren dazu - Google Patents
Spaltrohr für eine elektrische rotierende maschine, herstellungsverfahren dazu Download PDFInfo
- Publication number
- WO2023285192A1 WO2023285192A1 PCT/EP2022/068456 EP2022068456W WO2023285192A1 WO 2023285192 A1 WO2023285192 A1 WO 2023285192A1 EP 2022068456 W EP2022068456 W EP 2022068456W WO 2023285192 A1 WO2023285192 A1 WO 2023285192A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- areas
- fiber reinforcement
- deformation
- design element
- during operation
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000004364 calculation method Methods 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims description 39
- 230000002787 reinforcement Effects 0.000 claims description 20
- 238000013461 design Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 7
- 230000002706 hydrostatic effect Effects 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 238000003860 storage Methods 0.000 claims 1
- 238000011068 loading method Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 238000009730 filament winding Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/0626—Details of the can
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- 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
- F05D2250/73—Shape asymmetric
-
- 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
- F05D2300/603—Composites; e.g. fibre-reinforced
Definitions
- the invention relates to a can for an electrical rotating machine, an electric motor or a liquid pump, and a manufacturing method for it.
- e-motors Dimensioning for the electrical power output of an electric motor is the waste heat generated by the electrically conductive components and the associated disadvantages.
- One disadvantage is, for example, the failure of the polymer insulation of the winding coils above a certain operating temperature.
- the maximum operating temperature in the stator winding is important for the maximum electrical load capacity of an e-machine.
- jacket cooling of the stator already shows good cooling results.
- even better cooling of the critical stator windings can be achieved with a can construction in which a cooling liquid circulates on the inside of the coil.
- the sealing area of the can in the air gap includes a groove running around the rotor area, in which the so-called O-rings are inserted for mounting and sealing the can.
- An e-machine with a higher power density shows obvious advantages in mobile applications.
- the more compact design enables lighter installation positions and the higher power density also indirectly follows the idea of lightweight construction, since a smaller electric motor can be used for the required power.
- the structural requirements placed on a can are: a.) The smallest possible thickness: the thicker the can, the greater the magnetic losses of an electric machine. The increasing magnetic losses reduce the efficiency. A manufacturing technology is preferred in which thin-walled tubes can be manufactured. b.) The highest possible dimensional stability under external pressure: Due to the circulating coolant, an external pressure load acts on the can. The pressure load deforms the can. The uneven pressure distribution is due to the hydrostatic fluid pressure, which varies with surface distance. The deformation of the tube is taken into account in the air gap width and thus increases the magnetic losses.
- the maximum system pressure is made up of variable components, such as acceleration, punctures..., and constant components, such as gravitational loading through the liquid column.
- the requirements described for a can usually result in the can being designed as a fiber-reinforced plastic composite.
- the winding process - e.g. filament winding - and/or the prepreg autoclave technology are particularly suitable here.
- the air gap thicknesses can thus be reduced for the reasons explained under b.) and c.).
- the disadvantage here, however, is the high material costs of the fibers used.
- the object of the present invention is therefore to provide a can for a rotating electric machine or electric motor or liquid pump that overcomes the disadvantages of the prior art and, despite this, can be produced economically and suitable for mass production, i.e. can be automated.
- the subject matter of the present invention is a can for an electrical rotating machine, where stressed areas of the can are identified by measurement data and/or deformation simulation and their expected deformation during operation compared to the symmetrically shaped can can be calculated in advance and therefore at least one asymmetrical design element on the can and / or is provided at the bearing seat.
- the expected deformation of the particularly stressed areas of the can is formed as a negative mold and/or additional fiber reinforcement is provided in certain areas and/or the bearing seat or the position of the O-rings of the expected deformation customized.
- the invention also relates to a method for producing a can, comprising the following method steps: a) Deformation simulation and/or measurement of the operational loads affecting the dimensional stability of the can due to hydrostatic pressure, due to vibration and/or due to the counterforce of the sealing O- Rings, b) Generating and storing corresponding data with regard to expected particularly stressed areas of the can, c) On the basis of this data, carrying out a calculation to determine the position of the particularly stressed areas of the can, d) Generating a virtual, possibly digital Representation of a can optimized with regard to the particularly stressed areas with at least one asymmetrical design element, which is represented either by compression and/or increase in the fiber reinforcement, by complexity of the shape and/or surface structure, and/or by changing the conventional bearing seat is provided, e) shaping and production of a
- the general finding of the invention is that the use of at least one asymmetrical design element is advantageous in the manufacture of an improved can of an electrical rotating machine, because the planned air gap size of the can can be reduced as a result.
- an “asymmetrical design element” refers, for example, to a region of the can that has a deformation compared to the symmetrical can that practically corresponds to a negative shape of a bulge in the can that is to be expected during operation.
- an asymmetrical design element is an area with fiber reinforcement that deviates from a uniform fiber reinforcement in the can, with the deviation in the material, the position of the fibers, the fiber combination, the fiber strength and/or the density of fibers sern can be realized in the composite material or as any combination of the above deviations.
- an asymmetrical design element is an eccentric bearing seat of the can, which can be realized by an asymmetrical position, thickness and/or shape of the sealing O-rings.
- an asymmetrical design element is an O-ring seal that is not arranged axially symmetrically to the rotor axis, at least in some areas.
- a can according to the invention may have one or more such examples implemented and/or it may have one or more areas in which these examples of asymmetric design elements are implemented.
- a mold core for automated production e.g. experienced by a winding or by a prepreg autoclave technology - is manipulated by split tubes in the negative deformation direction, so that it gets a surface on which a split tube can be produced, which has a pre-deformation, which is pushed back again during operation under the external pressure of the coolant.
- the can is then given a round shape, for example due to the loads during operation.
- the use of expensive reinforcing fibers can be minimized, e.g. limited only to these areas, without sacrificing quality overall.
- a "prepreg” material is a composite material that consists of pre-impregnated fibers and a partially cured polymer matrix, such as epoxy and/or phenolic resin, or even a thermoplastic mixture with liquid rubber and/or resins. direction, in different lengths, bundled, braided, interwoven as a combination of several fiber materials or as individual fibers.
- the fibers are in the form of a fabric and the matrix is used to bind them together and to other components during manufacture.
- the duroplastic matrix is only partially cured to allow easy handling.
- a prepreg is basically in the B-stage, i.e. the duroplastic matrix is only partially cured, not crosslinked.
- the prepregs require autoclave processing for curing. By using prepregs, anisotropic mechanical properties can be achieved along the fiber, while the polymer matrix provides filling properties and keeps the fibers in a single system.
- an expected deformation and/or an expected bending or indentation is calculated in advance for the respective use of the can.
- These parameters are used in the manufacture of the can in order to supplement the can in a targeted manner at the location of the expected bending or indentation with fiber reinforcement and/or negative deformation that is adapted in terms of quality and/or orientation compared to the conventional can so that the Deformation during operation at the added point does not occur or occurs only to a reduced extent or only occurs after an extended period of operation.
- air gap size of the can refers to the radial expansion of the air gap in which the can is used.
- deformation of the can is also taken into account proposed - installation of asymmetrical design parts reduced.
- Eccentric means an eccentric bearing.
- the bearing seat is the positioning of the can on the sealing of the O-ring.
- the can has one or more areas, particularly in the edge areas at the end of the tube, which are provided with increased fiber reinforcement, e.g. have more and/or different fibers for reinforcement.
- a changed or increased fiber reinforcement is also present, for example, if one or more areas with a fiber reinforcement that has a different preferred direction, a different type of fiber, a different fiber material, a different fiber layout, a different combination of fibers, etc. are present.
- areas of the can with simple fiber reinforcement areas with bundled and/or braided fibers, areas with fiber fabrics for fiber reinforcement can be present.
- fibers can be realized in the form of a simple fiber reinforcement as a fiber braid and/or as rovings.
- fiber reinforcement with different preferred directions can be present in the can, depending on the requirement profile of the particularly stressed areas.
- glass fibers can be used alone or in combination with other fibers for reinforcement. These can be used in a preferred direction or as a fiber fabric in the area. It can also be fiber reinforcements with a network of different fibers.
- the can has a complex shape. This can be implemented in such a way that one or more areas are present which are thickened, puckered, bulged and/or meanderingly bulged in and bulged out. According to another embodiment of the invention, this or these areas can alternate with one or more areas that are circular and cylindrical.
- the can has a complex surface structure.
- the can is at least partially in a non-axially symmetrical arrangement to the rotor axis, resulting in an at least partially non-round or eccentric O-ring sealing device to the rotor area.
- a geometric adaptation of the mold core is produced, on which, for example, a fiber-plastic composite can is manufactured.
- a can is then produced over this mold core, which has a complex shape, but which is deformed into a conventional round can during operation due to an uneven pressure distribution during operation as a result of a "reformation to the non-complex simple cylindrical shape".
- the can is in a negative form of the expected Ver- Formations in the form of a tube of complex shape and/or surface.
- the invention creates a can for a rotating electric machine for the first time, which has an improved air gap size of the can and thereby results in lower electrical losses in the electric motor.
- the invention also creates a can for an electric rotating machine that has a reduced air gap size of the can during operation, because areas that are particularly stressed during operation are taken into account during production by deformation simulation and/or prediction, so that the Loads during operation hit areas of the can that have been prepared and/or reinforced for this purpose.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22747607.4A EP4348811A1 (de) | 2021-07-13 | 2022-07-04 | Spaltrohr für eine elektrische rotierende maschine, herstellungsverfahren dazu |
CN202280049679.6A CN117642965A (zh) | 2021-07-13 | 2022-07-04 | 用于旋转式电机的密闭套管、用于其的制造方法 |
US18/579,290 US20240339886A1 (en) | 2021-07-13 | 2022-07-04 | Can for an Electric Rotating Machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021207416.2 | 2021-07-13 | ||
DE102021207416.2A DE102021207416B3 (de) | 2021-07-13 | 2021-07-13 | Spaltrohr für eine elektrische rotierende Maschine, Herstellungsverfahren dazu |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023285192A1 true WO2023285192A1 (de) | 2023-01-19 |
Family
ID=82703078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/068456 WO2023285192A1 (de) | 2021-07-13 | 2022-07-04 | Spaltrohr für eine elektrische rotierende maschine, herstellungsverfahren dazu |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240339886A1 (de) |
EP (1) | EP4348811A1 (de) |
CN (1) | CN117642965A (de) |
DE (1) | DE102021207416B3 (de) |
WO (1) | WO2023285192A1 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4838763A (en) * | 1986-11-20 | 1989-06-13 | Heyko Reinecker | Canned motor pump |
DE19840470A1 (de) * | 1997-09-09 | 1999-05-20 | Charmilles Technologies | Vorrichtung zur Halterung einer Elektrode für Elektroerosionsmaschinen |
EP2040354A1 (de) * | 2007-09-21 | 2009-03-25 | Grundfos Management A/S | Spaltrohr eines Antriebsmotors für ein Pumpenaggregat |
EP2040353A1 (de) * | 2007-09-21 | 2009-03-25 | Siemens Aktiengesellschaft | Spaltrohr und Verfahren zur Herstellung |
EP2549100A1 (de) * | 2011-07-18 | 2013-01-23 | Alstom Wind, S.L.U. | Windturbinengenerator |
DE102020205287A1 (de) | 2020-04-27 | 2021-10-28 | Siemens Aktiengesellschaft | Elektrische rotierende Maschine, Elektromotor oder Flüssigkeitspumpe mit Spaltrohr |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU48818A1 (de) | 1964-06-19 | 1965-08-12 | ||
DE202010018078U1 (de) | 2010-12-23 | 2014-01-27 | Avl Trimerics Gmbh | Maschine mit Faserspaltrohr |
-
2021
- 2021-07-13 DE DE102021207416.2A patent/DE102021207416B3/de active Active
-
2022
- 2022-07-04 US US18/579,290 patent/US20240339886A1/en active Pending
- 2022-07-04 WO PCT/EP2022/068456 patent/WO2023285192A1/de active Application Filing
- 2022-07-04 EP EP22747607.4A patent/EP4348811A1/de active Pending
- 2022-07-04 CN CN202280049679.6A patent/CN117642965A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4838763A (en) * | 1986-11-20 | 1989-06-13 | Heyko Reinecker | Canned motor pump |
DE19840470A1 (de) * | 1997-09-09 | 1999-05-20 | Charmilles Technologies | Vorrichtung zur Halterung einer Elektrode für Elektroerosionsmaschinen |
EP2040354A1 (de) * | 2007-09-21 | 2009-03-25 | Grundfos Management A/S | Spaltrohr eines Antriebsmotors für ein Pumpenaggregat |
EP2040353A1 (de) * | 2007-09-21 | 2009-03-25 | Siemens Aktiengesellschaft | Spaltrohr und Verfahren zur Herstellung |
EP2549100A1 (de) * | 2011-07-18 | 2013-01-23 | Alstom Wind, S.L.U. | Windturbinengenerator |
DE102020205287A1 (de) | 2020-04-27 | 2021-10-28 | Siemens Aktiengesellschaft | Elektrische rotierende Maschine, Elektromotor oder Flüssigkeitspumpe mit Spaltrohr |
Also Published As
Publication number | Publication date |
---|---|
US20240339886A1 (en) | 2024-10-10 |
CN117642965A (zh) | 2024-03-01 |
EP4348811A1 (de) | 2024-04-10 |
DE102021207416B3 (de) | 2022-11-10 |
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