WO2014056770A1 - Vorrichtung und verfahren zum verguss von spulen - Google Patents
Vorrichtung und verfahren zum verguss von spulen Download PDFInfo
- Publication number
- WO2014056770A1 WO2014056770A1 PCT/EP2013/070506 EP2013070506W WO2014056770A1 WO 2014056770 A1 WO2014056770 A1 WO 2014056770A1 EP 2013070506 W EP2013070506 W EP 2013070506W WO 2014056770 A1 WO2014056770 A1 WO 2014056770A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- potting
- coils
- casting
- vergussbehälter
- vergussbehälters
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/005—Impregnating or encapsulating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/048—Superconductive coils
Definitions
- the present invention relates to a device for the casting of coils
- Potting electrical coils in particular superconducting coils, and an operating method for this device.
- electrical coils are produced which comprise one or more wound coil conductors and are encapsulated with a potting compound.
- superconducting coils are typically fabricated from multiple layers of wound coil conductors of superconducting material which are embedded in a cured epoxied / amine or epoxy / acid anhydride based potting compound.
- coils are required that withstand high speeds in the range of 3600 revolutions per minute and have large lateral dimensions in the range of 1 m by 4 m. Due to the high centrifugal forces that occur, the coils must be very stable mechanically. In addition, the coils must be very precise fit and have very dimensionally stable outer contours, with the required tolerances in the range of 100 ⁇ lie. With previously known potting methods, these tolerance values can only be achieved by subsequent processing of the potted coil. However, such post-processing is not suitable for the production of a superconducting coil, since the superconducting materials, in particular the ceramic
- the object of the present invention is to provide a device for casting coils, in particular superconducting coils, which avoids the disadvantages mentioned. Another object of the invention is to provide an operating method for the device.
- the inventive device for casting coils comprises an outer casting container, a Vergussraum for receiving at least one spool to be cast and a device for filling with potting compound.
- Grout is lined with an inner grout, the material has a Vickers hardness below 500 and the material has a melting point between 45 degrees Celsius and 200 degrees Celsius.
- the outer potting of this device can be made easier and cheaper than previous devices, since the quality and accuracy of the surface of the molded coil is defined only by the nature of the inner Verguss capableers.
- the production of the inner casting container can, for example, be done inexpensively by filling with the molten material of the inner casting container and then hollowing out.
- the melting point of the material of the inner Verguss realizeers is advantageously below 120 degrees Celsius.
- the operating method according to the invention advantageously makes it possible to produce coils, in particular superconducting coils, with more precise manufacturing tolerances than with known methods. This is achieved by the simple processing of the material of the inner Verguss memoriers, so that a subsequent processing of the molded coil can be avoided.
- Grout can be processed in a simple manner, for example by scraping or milling with a milling machine. Small changes in the dimensional requirements of the molded coil can be advantageously implemented by changes in the processing of the inner Verguss maiers without a change of the outer Verguss practicers is necessary.
- the mechanical stress on release of the potted coil over known potting is significantly reduced, since a soft and easily fusible material is used for the inner casting container. This makes it possible to produce coils with dimensions of several meters with precise tolerances and high process yield.
- the shape of the molded coil does not require compromises in terms of facilitating mechanical detachment, such as the use of sloped walls undesirable in the later application for the coil.
- the device may additionally have the following features:
- the material of the inner Verguss examples be a solid mixture of aliphatic hydrocarbons.
- the material may be a paraffin or a microwax.
- paraffins and microwaxes are environmentally neutral and can be reused several times. Due to the water-repellent and insulating properties of paraffins and microwaxes, any residues that may be present on the surface of the cast coil do not have a detrimental effect.
- the mold can include a lid.
- the mold can be closed by placing the coil in the Vergussraum using the lid.
- the lid can be connected via a seal with the outer casting container.
- the cover may be coated with a release layer, in particular with the material PTFE. This facilitates that
- the device may be equipped with a heating device, a temperature sensor and a control device that regulates the temperature based on measured values from the temperature sensor.
- the device may be equipped with a device for evacuating and / or aerating the Vergussraums. This allows the execution of the potting and hardening of the potting material under vacuum and aeration of the
- the device may be equipped with a drain device for discharging the material of the inner Verguss instructers.
- the Vergussraum can take the form of a
- the inner potting container and the outer potting container each include an inner and an outer
- the method may additionally have the following features:
- Grout for releasing the potted coil be liquefied or softened by heating to a temperature between 45 degrees Celsius and 225 degrees Celsius. This allows a particularly gentle release of the molded coil from the device, so that a mechanical load on the coil when removing is largely avoided.
- Potting compound to be drained through the drainage device.
- the outer potting can be lined several times with the material of the inner Verguss knowers and be used with each prepared inner grout for the implementation of a potting. This in principle any number of reuse of the outer Verguss employers allows a particularly cost-effective implementation of the method, since the cost of the outer Verguss employer will typically be significantly higher than the cost of the inner Verguss employer.
- the spool to be cast can be positioned in the casting space of the device on at least one spacer. This allows a substantial enclosure of the coil with the potting material, so that the wound coil conductors are largely protected against external mechanical, chemical and electrical influences.
- Several individual coils can be positioned in the potting space of the device and potted together to form a bobbin.
- at least one spacer can be positioned between the coils.
- the potting space of the device can be evacuated before or after filling the potting compound.
- Fig. 1 shows a casting mold for casting superconducting coils in a schematic plan view
- Fig. 2 shows a cross section according to sectional plane II in Fig. 1, which illustrates the structure of the casting mold in more detail.
- 1 shows by way of example the top view of a casting mold 1 for casting a superconducting rectangular coil.
- the outer casting container 3 and the casting chamber 5 which is adapted in its shape to the race track coil to be cast.
- the outer potting container 3 has an outer wall 7 and an inner wall 8, so that there is a free cavity in the middle.
- Vergussformen conceivable in which no inner wall exists and the Vergussraum 5 consists of a simply connected volume.
- the shapes of the casting space can also be, for example, annular or oval.
- the outer casting container 3 is made of aluminum, which is suitable as a massive, dimensionally stable material for the production of such forms.
- Fig. 2 shows a cross section of a part of the casting mold 1 according to sectional plane II in Fig. 1, in which the structure of
- Grouting mold 1 can be seen in more detail and in which the Vergussraum 5 is filled with an array of coils 9.
- the casting mold 1 comprises an outer casting container 13 and a lid 15, which can be connected to one another via a seal 17.
- the seal 17 prevents the entry and exit of
- the seal 17 is a rubber O-ring.
- the outer casting container 3 is lined with an inner casting container 11, the material of which in this embodiment is a hard paraffin with a melting point of 55 degrees Celsius.
- the inner casting container 11 can, for example, be obtained by completely filling the outer casting container 3 with molten hard paraffin and then hollowing out the inner casting container 11. interior space.
- the average layer thickness of the inner Verguss concerneders 11 is 2 mm in this example, with compliance with the exact manufacturing tolerances, which are in the range of 100 ⁇ , achieved by local deviations from the average layer thickness.
- the post-processing of the inner Verguss mattersers 11 to achieve the required geometry and surface quality can be done for example with a milling machine with a cooled milling head.
- the casting chamber 5 is equipped in the example shown with three coils 9, wherein the coils 9 are kept separated by a plurality of first spacers 39 of the inner casting container 11 and the coils 9 are held apart by a plurality of second spacers 41 from each other. This ensures that the lower coil is largely enclosed by potting compound, and that the gap between the coils is filled with potting compound.
- cooling plates for example made of copper, can also be attached between the coils 9 for improved cooling of the coils.
- a device 10 for filling with potting compound is present, through which the potting space 5 is connected to a potting compound reservoir, not shown here, via a potting compound valve 29.
- the potting compound may be, for example, a mixture of an epoxy resin and an amine, which cures after preparation of the mixture within a few hours at room temperature.
- the device shown comprises a vacuum connection 31, through which the casting chamber 5 can be evacuated via a vacuum valve 33. After casting the coils 9, the casting space can be refilled with air through the air connection 35 via a ventilation valve 37 or it can also be subjected to overpressure during the curing of the casting compound. Alternatively, filling with another gas or gas mixture is also possible.
- the device of the embodiment shown is further provided with heaters 21, a temperature sensor 23 and a control device, not shown here, which controls the temperature of the outer Verguss prepareders 3 based on measured values of the temperature sensor 23.
- the heaters 21 are realized in this example as heating with electrical heating coils see, and the temperature sensor 23 is a thermocouple or a Pt100 temperature sensor. In this way, after the sputtering of the coils 9, the temperature of the outer Verguss constituers 3 are increased so that the hard paraffin of the inner Verguss anyers 11 melts and the molded coils can be removed from the mold after opening the lid 15.
- the lid 15 is provided in this example with a release layer 19, which consists of PTFE.
- the lid 15 may also be coated with the material of the inner casting container 11, that is, for example, with hard paraffin, or completely made of a material with non-adherent surface properties, ie, for example, completely made of paraffin or PTFE.
- the mold is further provided with a drain device 25, through which the molten material of the inner Verguss considereders 11 can be discharged via the drain valve 29.
- the molded coils 9 can be removed without high mechanical load from the Vergussraum 5.
- This particularly gentle method of dissolving out the cast coils also has the advantage that the walls of the casting mold do not have to be designed conically in order to enable leaching out at all. Thus, there are no adverse effects of the potting on the geometric shape of the molded coil here.
- many casting processes can be carried out with the casting mold shown. It is only necessary in each manufacturing process to produce the inner casting container 11 again and possibly by post-processing to the possibly for to adapt the updated date to updated geometric requirements.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Insulating Of Coils (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015536067A JP6096306B2 (ja) | 2012-10-10 | 2013-10-02 | コイルのポッティング装置および方法 |
RU2015116177A RU2641669C2 (ru) | 2012-10-10 | 2013-10-02 | Способ заливки катушек и устройство для его осуществления |
CA2887458A CA2887458A1 (en) | 2012-10-10 | 2013-10-02 | Device and method for potting coils |
EP13771484.6A EP2885798B1 (de) | 2012-10-10 | 2013-10-02 | Vorrichtung und verfahren zum verguss von spulen |
KR1020157008910A KR20150065712A (ko) | 2012-10-10 | 2013-10-02 | 코일을 포팅하기 위한 장치 및 방법 |
US14/435,098 US20150279558A1 (en) | 2012-10-10 | 2013-10-02 | Device and method for potting coils |
CN201380053123.5A CN104781892B (zh) | 2012-10-10 | 2013-10-02 | 用于灌封线圈的设备和方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012218456.2 | 2012-10-10 | ||
DE102012218456.2A DE102012218456A1 (de) | 2012-10-10 | 2012-10-10 | Vorrichtung und Verfahren zum Verguss von Spulen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014056770A1 true WO2014056770A1 (de) | 2014-04-17 |
Family
ID=49301490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/070506 WO2014056770A1 (de) | 2012-10-10 | 2013-10-02 | Vorrichtung und verfahren zum verguss von spulen |
Country Status (9)
Country | Link |
---|---|
US (1) | US20150279558A1 (de) |
EP (1) | EP2885798B1 (de) |
JP (1) | JP6096306B2 (de) |
KR (1) | KR20150065712A (de) |
CN (1) | CN104781892B (de) |
CA (1) | CA2887458A1 (de) |
DE (1) | DE102012218456A1 (de) |
RU (1) | RU2641669C2 (de) |
WO (1) | WO2014056770A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109382949A (zh) * | 2018-09-10 | 2019-02-26 | 中国航天科工集团八五研究所 | 一种抵抗高过载载荷的结构灌封方法 |
CN111319176B (zh) * | 2020-02-27 | 2022-03-25 | 歌尔股份有限公司 | 灌胶模具、灌胶装置以及灌胶方法 |
DE102020111333A1 (de) * | 2020-04-27 | 2021-10-28 | Audi Aktiengesellschaft | Verfahren zum Vergießen eines FSM-Rotors und FSM-Rotor mit Hybridrotorverguss |
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GB1145450A (en) * | 1966-04-08 | 1969-03-12 | Gen Electric | Method of making conductive coatings on the surface of an encapsulated electrical device |
GB2294592A (en) * | 1994-10-04 | 1996-05-01 | Toshiba Kk | Superconducting coils |
WO2004030886A1 (de) * | 2002-09-30 | 2004-04-15 | Siemens Aktiengesellschaft | Giessform für zylindrische giessharzspulen |
DE102007002195A1 (de) * | 2007-01-16 | 2008-07-17 | Siemens Ag | Verfahren zur Gewährleistung der Entfernbarkeit und/oder der Beweglichkeit eines in einer Vergussmasse eingegossenen Elements |
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JPS60195914A (ja) * | 1984-03-17 | 1985-10-04 | Ricoh Co Ltd | トランス絶縁樹脂被覆装置 |
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2012
- 2012-10-10 DE DE102012218456.2A patent/DE102012218456A1/de not_active Withdrawn
-
2013
- 2013-10-02 WO PCT/EP2013/070506 patent/WO2014056770A1/de active Application Filing
- 2013-10-02 US US14/435,098 patent/US20150279558A1/en not_active Abandoned
- 2013-10-02 CN CN201380053123.5A patent/CN104781892B/zh not_active Expired - Fee Related
- 2013-10-02 CA CA2887458A patent/CA2887458A1/en not_active Abandoned
- 2013-10-02 RU RU2015116177A patent/RU2641669C2/ru not_active IP Right Cessation
- 2013-10-02 JP JP2015536067A patent/JP6096306B2/ja active Active
- 2013-10-02 EP EP13771484.6A patent/EP2885798B1/de active Active
- 2013-10-02 KR KR1020157008910A patent/KR20150065712A/ko not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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GB1145450A (en) * | 1966-04-08 | 1969-03-12 | Gen Electric | Method of making conductive coatings on the surface of an encapsulated electrical device |
GB2294592A (en) * | 1994-10-04 | 1996-05-01 | Toshiba Kk | Superconducting coils |
WO2004030886A1 (de) * | 2002-09-30 | 2004-04-15 | Siemens Aktiengesellschaft | Giessform für zylindrische giessharzspulen |
DE102007002195A1 (de) * | 2007-01-16 | 2008-07-17 | Siemens Ag | Verfahren zur Gewährleistung der Entfernbarkeit und/oder der Beweglichkeit eines in einer Vergussmasse eingegossenen Elements |
Also Published As
Publication number | Publication date |
---|---|
KR20150065712A (ko) | 2015-06-15 |
DE102012218456A1 (de) | 2014-04-10 |
US20150279558A1 (en) | 2015-10-01 |
JP6096306B2 (ja) | 2017-03-15 |
RU2015116177A (ru) | 2016-12-10 |
CN104781892B (zh) | 2017-10-24 |
JP2015534732A (ja) | 2015-12-03 |
RU2641669C2 (ru) | 2018-01-19 |
CA2887458A1 (en) | 2014-04-17 |
CN104781892A (zh) | 2015-07-15 |
EP2885798A1 (de) | 2015-06-24 |
EP2885798B1 (de) | 2018-12-05 |
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