EP2663983A2 - Vorrichtung zur verbesserung der elektrischen eigenschaften einer beschichtung eines leiters oder dergleichen durch isolierstoffe, sowie ein verfahren zur anwendung einer derartigen vorrichtung - Google Patents
Vorrichtung zur verbesserung der elektrischen eigenschaften einer beschichtung eines leiters oder dergleichen durch isolierstoffe, sowie ein verfahren zur anwendung einer derartigen vorrichtungInfo
- Publication number
- EP2663983A2 EP2663983A2 EP12706448.3A EP12706448A EP2663983A2 EP 2663983 A2 EP2663983 A2 EP 2663983A2 EP 12706448 A EP12706448 A EP 12706448A EP 2663983 A2 EP2663983 A2 EP 2663983A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductor
- coating
- insulating substrate
- electrical
- molecules
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/145—Pretreatment or after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0033—Apparatus or processes specially adapted for manufacturing conductors or cables by electrostatic coating
Definitions
- the invention relates to a device for improving the electrical properties of a coating by means of an insulating material on the surface of conductors for electrical use, and to a method of using a liquid insulating material on surfaces of conductors for electrical use by such a device.
- DD 281 314 A7 discloses a process for the electrical coating of parts which are completely or partially electrically conductive.
- Such a coating composition consists of any polymers that may be mixed with fillers, or inorganic suspensions that can be applied uniformly to parts by the coating thickness and duration is adjustable by selecting the process parameters.
- at least one solvent and a highly dispersed hydrophobicized silica have been added to the coating composition, so that the silica in combination with the solvent under the influence of the electric field on the
- CONFIRMATION COPY Coating part is deposited and there builds a stabilizing framework for the coating composition.
- WO 02/36 851 A1 describes a method and a device for the surface treatment of electrically insulating substrates, which are used to coat substrates.
- DE 103 20 805 B4 discloses a device for processing cylindrical, at least one electrically conductive vein having substrates with a process space and by applying a voltage to at least one, the process space associated, fixedly disposed on the device electrode and a counter electrode, wherein in A plasma is ignitable in the process space and the applied voltage is an AC voltage.
- Insulating materials whose basic components consist essentially of polymers or the like applied on a surface of a conductor or the like often do not have sufficient insulating strengths. This inevitably leads to creeping and sliding discharges. Such low insulation resistance is characterized by the fact that a non-self-contained, homogeneous insulation barrier is present. In this case, the dielectric strength of an insulating material corresponds to an electric field strength which may at most prevail in the conductor, without there being a voltage breakdown.
- Known paint layers of electrical conductors or the like have an isotropic surface with respect to their molecules or the like.
- nanoscale particles particles with a particle size that move in the nanoscale (nanoscale particles) have an increasing Application found. This also applies to dispersions containing particles with magnetic or ferroelectric properties.
- transformers consist of a magnetic circuit with a ferrite or iron core around which the corresponding conductors of various circuits are wound so that the current of each circuit is passed around the core several times.
- this consists of a magnetic flux that generates a magnetic field.
- the voltages on the windings due to the electromagnetic induction are proportional to the rate of change of the magnetic flux and the number of turns of the winding.
- transformers In order to increase the magnetic induction, transformers ideally have cores.
- the inductance is an electrical property of a current-carrying conductor, where due to a change in the electric current, a magnetic field is built up.
- the object of the invention is to increase the breakdown and dielectric strength in the low and high-frequency voltage range of insulation in electrical conductors, such as wires, cables or the like. Furthermore, a lower damping effect should occur in the high-frequency range in the case of the conductors or the like.
- the invention should lead to a reduction of the process times and a reduced use of insulating materials.
- In addition to increasing the dielectric strength should also be possible to increase the line inductance of the electrical conductors, so as to build the inductors made from the conductors, transformers or the like, for example, to make smaller or more powerful.
- the object of the invention is achieved by a device according to claim 1 and by an insulating substrate according to claim 6 and a method according to claim 7 for the realization.
- the subclaims have a further embodiment of the solution principle of the invention to the content.
- a device for improving the electrical properties of a coating of an insulating substrate or one or more paint layers on the surface of conductors for electrical applications, such as wires, or the like with a coating device for applying a liquid insulating substrate, the orientation of the isotropic molecules and / or nanoparticles or aggregates of the still liquid insulating substrate achieved by application of a high voltage by the device according to the invention.
- the conductor is continuously moved through the device, so that at the end of the device, a curing of the insulating substrate with simultaneous alignment of the molecules and / or nanoparticles or the like has taken place.
- the insulating substrates used with certain, particularly effective additives in the form of paint fillers.
- Barium titanate or strontium titanate or mica or serpentine or fiber glarpentine or glass fibers or aluminum oxide or the like have proven to be particularly suitable additives. It is also possible to use all non-expressive effective additives.
- additives to the insulating substrates already increases the dielectric strength to a known extent.
- the aggregates which in particular have a platelet geometry in the molecular range
- an alignment by treatment with a high voltage is achieved by a method according to the invention to be described.
- This means that the isotropic orientation of the platelets is converted into an anisotropic alignment of the platelets in one direction due to the applied high voltage, which is designed as a DC voltage.
- Spherical particles are less suitable for such use, because thereby the degree of coverage of the conductor surface is not optimal. It remain between the individual spherical molecules to large gaps. For this reason, it is important to obtain the appropriate additives through a chemical process in the desired optimized form.
- the dielectric strength improves over 50% over conventional applications.
- different additives can be used for different electrical uses of the conductor wires.
- Si for example, for the thermal conductivity of a different additive than, for example, an additive to increase inductances or dielectric strength necessary.
- the varnish used as the insulating substrate is usually a polymer.
- Such a lacquer layer with its molecules is isotropic, this applies to any type of insulating substrates.
- This anisotropy means a closed or close to closed surface. A completely closed surface is achieved by several insulating substrate layers one above the other, d. H. the process of coating is repeated several times. This is already the case today. However, by the invention it is possible to align the molecules horizontally and thus achieve a higher degree of coverage and thus a higher dielectric strength.
- paint coatings of conductors or the like are carried out with an insulating substrate in multiple layers to ensure a uniform quality.
- This may be a whole number of layers depending on the use of the conductor.
- it is possible to achieve a lower paint usage, because the number of paint layers may be lower due to the aggregates. This means not only a saving of paint quantities but also lower process times.
- the coating of the conductor mechanically stable, ie it can be bent more. At the same time, however, this also means that the paint does not peel off, which is certainly the case with very thick layers of paint in the usual manner of application.
- the proportion of aggregates depends on the desired use. Aggregates up to about 40% are to be mentioned as the upper limit, because in addition the molecules can only be aligned insufficiently by the process according to the invention. This is because the individual molecules or the like are enveloped by the insulating substrates, so that there is no grain contact against each other. In the electrical properties, it is not important that the surface is completely closed by a paint layer alone by the molecules in the aligned state. Due to the multiple application, d. H. in several layers on top of each other, the problem of holes is repaired.
- a conductor surface produced by the method according to the invention requires substantially less coating layers than conventionally produced surfaces. This has the consequence that the use of material is lower and this also leads to a reduction of the process times, at the same time significantly improved electrical properties.
- the insulating material is mechanically stable by the method according to the invention, because it can be subjected to greater mechanical stress, without changing its achievements and exceed. A faster processing is also possible.
- the molecules or macromolecules or nanoparticles usually present in the insulating substrate have a heterogeneous state of an isotropic molecule composite.
- a High voltage to the device, which consists essentially of a helix with at least two electrical conductors, an aligned homogeneous dressing is achieved with a self-contained anisotropic surface of the not yet solidified (hardened) insulating material, which is retained after curing.
- the electrical properties are increased in terms of their self-inductance.
- These nanoparticulate ingredients of the insulating substrate do not increase the dielectric strength. Rather, they serve to increase the inductance and to enhance corresponding magnetic properties.
- these include corresponding windings for motors or generators.
- the molecules or ferritic nanoparticles present in the insulating substrate also have a heterogeneous state within the liquid insulating substrate.
- the device according to the invention which consists essentially of a helix with at least two electrical conductors, a directed homogeneous bond is achieved with a quasi-closed anisotropic surface of the not yet solidified insulating material, which remains after curing.
- ferritic nanoparticles are also exclusively alone depending on the use of the conductor, introduced into the paint and can be aligned accordingly.
- different layers can be applied to a conductor both to increase the dielectric strength and to increase the line inductance.
- the coils, the at least two conductors are in a preferred embodiment progressively spaced apart, d. H. they are wound gradually progressively narrower. This achieves a "creeping" alignment of the isotropic molecular structure or the like into an anisotropic structure.
- the at least two electrical conductors are executed in opposite directions with a progressive pitch.
- a possible construction of the device for the anisotropic alignment of the molecules or the like in the paint can be constructed, for example, such that the at least two conductors are applied on a silicate tube in progressive or approximately equal distances on the outside diameter.
- the inner diameter of the tube is dimensioned so that the provided with the paint insulation conductor passes without contact with the pipe.
- another tube or body includes the silicate tube with the coils, the sealed space between the outer tube and the inner tube being filled with an insulating oil.
- At the ends of the sealed pipes or the like there are the high voltage electrical connections provided by a power supply allowing a continuous change in the high voltage.
- the entire device is held by a holder.
- the device may also be referred to as a dipole, wherein the corresponding device may also consist of a quadrupole.
- the applied high voltage which is preferably a DC voltage, depends on the dielectric strength of the insulating substrate used on the conductor to be coated or the like.
- the anisotropic surface of the coating of the conductor is reached, resulting in that the previously existing disorderly isotropic structure of the molecules or the like is virtually closed with their gaps.
- a targeted alignment of the molecular structure or the like of the insulating material is achieved. This means that an internal and external uniform surface is achieved by the molecular structure, which has significantly fewer defects than a normal common surface coating of electrical conductors or the like. In this case, an electrical as well as a mechanical improvement of the coating is achieved.
- the conductors coated according to the method of the invention it is possible for them to pass directly or indirectly through a plurality of coating sections without the hardened layers losing their anisotropic structure.
- the device described above the coating subsequent to the part of the Coating plant is. In such a case, for example, an immersion bath would cause the molecules to be aligned within or after the bath.
- the invention is characterized in particular by the fact that a significant increase in the dielectric strength in the low-frequency range is achieved. At the same time, however, a low-loss filter and damping effect is achieved even in the high-frequency range. However, this also applies to the dielectric strength and the mechanical behavior in the HF range.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coils Or Transformers For Communication (AREA)
- Insulating Bodies (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
- Non-Insulated Conductors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011008656 | 2011-01-14 | ||
DE102012000122A DE102012000122A1 (de) | 2011-01-14 | 2012-01-05 | Vorrichtung zur Verbesserung der elektrischen Eigenschaften einer Beschichtung eines Leiters oder dergleichen durch Isolierstoffe, sowie ein Verfahren zur Anwendung einer derartigen Vorrichtung |
DE102012000125A DE102012000125A1 (de) | 2011-01-14 | 2012-01-05 | Vorrichtung zur Verbesserung der elekrischen Eigenschaften einer Beschichtung eines Leiters oder dergleichen durch Isolierstoffe,sowie ein Verfahren zur Anwendung einer derartigen Vorrichtung |
DE102012000132A DE102012000132A1 (de) | 2011-01-14 | 2012-01-05 | Vorrichtung zur Verbesserung der elektrischen Eigenschaften eines Leiters oder dergleichen, sowie ein Verfahren zur Anwendung einer derartigen Vorrichtung |
DE102012000121A DE102012000121A1 (de) | 2011-01-14 | 2012-01-05 | Vorrichtung zur Verbesserung der elekrischen Eigenschaften einer Beschichtung eines Leiters oder dergleichen durch Isolierstoffe, sowie ein Verfahren zur Anwendung einer derartigen Vorrichtung |
PCT/EP2012/000139 WO2012095321A2 (de) | 2011-01-14 | 2012-01-12 | Vorrichtung zur verbesserung der elektrischen eigenschaften einer beschichtung eines leiters oder dergleichen durch isolierstoffe, sowie ein verfahren zur anwendung einer derartigen vorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2663983A2 true EP2663983A2 (de) | 2013-11-20 |
Family
ID=45774119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12706448.3A Withdrawn EP2663983A2 (de) | 2011-01-14 | 2012-01-12 | Vorrichtung zur verbesserung der elektrischen eigenschaften einer beschichtung eines leiters oder dergleichen durch isolierstoffe, sowie ein verfahren zur anwendung einer derartigen vorrichtung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2663983A2 (de) |
DE (4) | DE102012000122A1 (de) |
WO (1) | WO2012095321A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014205069A1 (de) | 2014-03-19 | 2015-09-24 | Schaeffler Technologies AG & Co. KG | Elektrischer Leiter mit einer thermisch leitfähigen Isolation |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB623330A (en) * | 1946-08-02 | 1949-05-16 | Us Rubber Co | Improvements in method and apparatus for covering wire conductors |
DE829224C (de) | 1949-08-06 | 1952-01-24 | Siemens & Halske A G | Verfahren und Vorrichtungen zur Herstellung von UEberzuegen |
DD281314A7 (de) | 1981-12-05 | 1990-08-08 | Boehme Klaus Dieter | Verfahren zur elektrischen beschichtung |
WO2002036851A1 (de) | 2000-11-02 | 2002-05-10 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und vorrichtung zur oberflächenbehandlung elektrisch isolierender substrate |
DE10320805B4 (de) | 2003-05-08 | 2010-10-28 | Je Plasmaconsult Gmbh | Vorrichtung zur Bearbeitung von zylindrischen, zumindest eine elektrisch leitende Ader aufweisenden Substraten |
SE531308C2 (sv) * | 2006-11-03 | 2009-02-17 | Abb Research Ltd | Högspänningskabel |
CN101816049A (zh) * | 2007-10-03 | 2010-08-25 | Abb研究有限公司 | 具有提高的电击穿强度的电绝缘体系 |
-
2012
- 2012-01-05 DE DE102012000122A patent/DE102012000122A1/de not_active Withdrawn
- 2012-01-05 DE DE102012000125A patent/DE102012000125A1/de not_active Withdrawn
- 2012-01-05 DE DE102012000121A patent/DE102012000121A1/de not_active Withdrawn
- 2012-01-05 DE DE102012000132A patent/DE102012000132A1/de not_active Withdrawn
- 2012-01-12 EP EP12706448.3A patent/EP2663983A2/de not_active Withdrawn
- 2012-01-12 WO PCT/EP2012/000139 patent/WO2012095321A2/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012095321A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE102012000125A1 (de) | 2012-07-19 |
WO2012095321A2 (de) | 2012-07-19 |
DE102012000121A1 (de) | 2012-07-19 |
WO2012095321A3 (de) | 2012-11-22 |
DE102012000122A1 (de) | 2012-07-19 |
DE102012000132A1 (de) | 2012-07-19 |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: B29C 47/00 20060101ALI20150807BHEP Ipc: C25D 13/22 20060101ALI20150807BHEP Ipc: H01B 7/00 20060101AFI20150807BHEP Ipc: H01B 13/00 20060101ALI20150807BHEP Ipc: H01B 13/14 20060101ALI20150807BHEP |
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