EP1091365B1 - Verfahren zur Herstellung eines hohlen Verbundisolators - Google Patents
Verfahren zur Herstellung eines hohlen Verbundisolators Download PDFInfo
- Publication number
- EP1091365B1 EP1091365B1 EP99119832A EP99119832A EP1091365B1 EP 1091365 B1 EP1091365 B1 EP 1091365B1 EP 99119832 A EP99119832 A EP 99119832A EP 99119832 A EP99119832 A EP 99119832A EP 1091365 B1 EP1091365 B1 EP 1091365B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- silicone rubber
- pipe
- htv
- injection molding
- 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.)
- Expired - Lifetime
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000002131 composite material Substances 0.000 title description 13
- 239000004945 silicone rubber Substances 0.000 claims abstract description 28
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000001746 injection moulding Methods 0.000 claims abstract description 15
- 239000004033 plastic Substances 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 5
- 238000012216 screening Methods 0.000 claims abstract 4
- 238000004073 vulcanization Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 150000002118 epoxides Chemical class 0.000 claims 1
- 239000011152 fibreglass Substances 0.000 claims 1
- 239000002990 reinforced plastic Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000004593 Epoxy Substances 0.000 description 14
- 239000003365 glass fiber Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 229920002631 room-temperature vulcanizate silicone Polymers 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000004944 Liquid Silicone Rubber Substances 0.000 description 1
- 229920004482 WACKER® Polymers 0.000 description 1
- 239000012612 commercial material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000013035 low temperature curing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
Definitions
- the invention relates to a process for the preparation a hollow composite insulator for central and High voltage, in which a plastic pipe, in particular a glass fiber reinforced epoxy tube, with a shield made of silicone.
- the pouring or injecting of the RTV silicone rubber components into the shape of the shield defining the tube surrounding shape can be done at low pressure due to the liquid RTV silicone rubber components and the polymerization occurs at room temperature or with only low heat input so that there is no risk that the decisive for the insulator properties of the plastic tube, which is usually a glass fiber reinforced epoxy, are degraded by the application process of the shielding.
- a disadvantage of this production process is the long vulcanization or the long time to demoulding.
- DE-A-197 38 338 shows the heating of a hollow core element of an insulator when working with RTV rubber grades or low temperature curing LTV rubber grades.
- the invention is based on the object Manufacturing method for a hollow insulator with a silicone rubber shield to create, which is easy and is fast and therefore cost feasible.
- This task is used in a procedure for Production of a hollow composite insulator of the beginning mentioned type solved by the Silikonkautschukpressirmung by injection molding of hot vulcanizing Silicone rubber is formed, at least during a portion of the injection molding at least one area the plastic tube against the pressure of the silicone rubber material is supported.
- the pressure-sensitive Plastic tube during injection of the HTV silicone rubber against harmful pressure or combined pressure and temperature influences are protected.
- the plastic tube is overmolded on its whole Length supported, preferably by a metal tube, which used with little play in the plastic pipe is and is removed again after the injection process.
- an HTV silicone rubber is used, its vulcanization temperature below the softening temperature the plastic or epoxy tube is and preferably at most about 130 ° C.
- the composite insulator is a HTV silicone rubber shield is faster and faster thus cheaper to produce, since on the one hand the HTV raw material is cheaper and on the other hand due the very short vulcanization time a high manufacturing cadence is possible.
- FIG. 1 shows schematically a hollow composite insulator 1 in vertical cross-section.
- the composite insulator has a support tube 2, which is usually a glass fiber reinforced epoxy tube is.
- the tube 2 is in usually on both sides with metallic fasteners 3 and 4, which are e.g. Made of aluminum can and forms the cavity 7 of the insulator.
- metallic fasteners 3 and 4 which are e.g. Made of aluminum can and forms the cavity 7 of the insulator.
- the insulator with a shield 5, which is made of a silicone rubber material is formed. This shielding is extended the leakage current path between the fastening elements 3 and 4 and serves in particular as a hydrophobic Protection against moisture.
- the roughly schematically illustrated Composite insulator 1 is only an example of a special embodiment of such an insulator shown.
- the insulator 1 could also with a held therein Ladder 6 be configured, as shown in Figure 1 indicated by broken lines.
- Such insulators can be of various sizes and designs and for the most diverse electrical medium and High-voltage systems, which, as known, not further elaborated here. Under middle and High voltage should in this case electrical voltages be understood by greater than about 1000 volts.
- the Shape of the shield 5 can be very different and is wavy here only as an example in section shown.
- such a composite insulator with cavity 7 according to the prior art with a shield 5 formed from RTV silicone rubber material. Its two components are in a corresponding Mold poured, which surrounds the epoxy tube 2 and the RTV silicone rubber material crosslinks at room temperature and at most slight heat input, e.g. within an hour.
- FIG. 2 shows that already provided with the flanges 3 and 4 Glass fiber reinforced epoxy tube 2 of an insulator according to Figure 1, which tube with the flanges in the lower part. 8 an injection mold is arranged.
- the upper half of the mold 8 ' is only partially indicated in FIG but according to the lower half 8 in the figure cover the upper area of the tube 2 and the flanges 3 and 4.
- the epoxy tube 2 at least partially supported to the necessary for injection molding with HTV silicone rubber material withstand high pressures.
- a tube 10 e.g. made of metal, in pushed in the tube 2.
- the tube 10 is not seated with a snug fit in the tube 2, but has in this one slight play of e.g. 0.1 - 1 mm.
- the tube 10 can thus simply inserted into the tube 2 and again be removed from this.
- FIG. 2 shows that the tube 10 only a part of the length of the Tube 2 covers, in the example shown substantially only the parts not covered by the flanges are.
- the tube 10 could also be longer and e.g. still have a section 11, which in the Figure 2 is shown with broken lines, wherein this section up to the left end in the figure of the tube 2 extends.
- a section 12 of the metal tube 10 could be provided be, which extends to the very back.
- the Tube 10 could also be provided with a flange 13, which would then also be embedded in the mold 8, 8 '.
- the tube 10 has a complete outer surface and lies with this on the inner surface of the tube. 2 but it can also recesses in the tube 10 available so that the epoxy tube is only partially supported becomes.
- HTV silicone rubber material for encapsulation of the tube 2 is now known Way in an injection molding machine by not shown Openings in the closed, so with both Halves mold the HTV silicone rubber material introduced under high pressure in the cavity 9 of the mold.
- the injection pressure may be e.g. in the range of 300 - 1'000 bar, what for the tube 2 thanks to the support 10 no danger of a defect results.
- the used HTV silicone rubber material is a commercial material, but which is selected so that the vulcanization temperature is low, e.g. In the range of 100 ° C to 160 ° C.
- Preferred is e.g. an HTV silicone rubber material the company Wacker Chemie, with the name Powersil 310, which is a vulcanization temperature of about 130 ° C has.
- the vulcanization temperature of the HTV material can of course be different 5 are selected as 130 ° C, but is for HTV materials usually higher than 100 ° C and should, as I said, one Safety distance to the softening temperature of the Plastic tube or epoxy tube 2 or to the for Tube 2 is considered permissible temperature of e.g. 180 ° C comply.
- the injection molding process is otherwise different not from known injection molding processes.
- the Form 8, 8 'can be heated to a uniform and to give rapid vulcanization.
- An insulator shielding 5 can be completed in this way within a few minutes and the insulator is removed from the mold become.
- the tube 10 After removal from the mold, the tube 10 removed from the insulator and this is for further processing ready.
- the support tube 10 can in the next Epoxy tube 2 are introduced, which then in the Form is introduced, followed by a renewed injection molding process can take place.
- the injection mold can thus directly, without a long wait, to be used again.
- a tube 10 By means of a tube 10 are of course others Possibilities for supporting the pipe 2 possible such as e.g. the tube 2 with a liquid, e.g. one Oil, filled and sealed, so that the incompressible liquid inside the tube 2 the support forms.
- a liquid e.g. one Oil
- the shape of the Isolator 1 only as an example.
- the insulator could also have a conductor 6, as in FIG. 1, for which in the two mold halves 8, 8 'corresponding Recesses must be provided.
- FIG. 3 shows as an example roughly schematically a glass fiber reinforced epoxy tube 2, which in turn is provided with flanges 3 and 4, and embedded with its front part in the mold halves 8 and 8 ' is.
- the resulting insulator 1 is with equipped with a ladder 6.
- the cavity 9 in the mold halves 8 and 8 ' is as explained with HTV material below filled high pressure.
- the front becomes Half of the tube 2 is provided with the shield 5, which can be seen after demolding in Figure 4.
- the shield 5 With two further mold halves 18 and 18 'with the cavity 19th Then, according to Figure 4, the rear part of the shield 5 added.
- the number of injection molding steps is included not limited to two, but can also include more steps. Of course it is also possible to overmold only part of the epoxy tube 2 with HTV material and the remaining areas e.g. with prefabricated To provide shielding parts.
Landscapes
- Insulating Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Insulators (AREA)
- Glass Compositions (AREA)
Description
Claims (4)
- Verfahren zur Herstellung eines hohlen Verbundisolators (1) für Mittel- und Hochspannung, bei welchem ein Kunststoffrohr (2), insbesondere ein glasfaserverstärktes Kunststoff-, vorzugsweise Epoxidrohr, mit einer Silikonkautschukbeschirmung (5) versehen wird, dadurch gekennzeichnet, dass die Beschirmung (5) durch Spritzgiessen von heissvulkanisierendem (HTV-) Silikonkautschuk gebildet wird, wobei mindestens während eines Teils des Spritzgiessvorganges mindestens ein Abschnitt des Kunststoffrohres gegen den Druck des Silikonkautschukmaterials abgestützt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Abstützung von einem in das Kunststoffrohr (2) eingeschobenem weiteren Rohr (10), insbesondere einem Metallrohr, gebildet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass ein HTV-Silikonkautschuk verwendet wird, der eine Vulkanisationstemperatur unterhalb der Erweichungstemperatur des Kunststoffrohres (2) aufweist, insbesondere im Bereich von 100°C bis 160°C und insbesondere eine Vulkanisationstemperatur von ca. 130°C.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Beschirmung (5) in mehreren Abschnitten entlang der Länge des Rohres (2) aufgebracht wird.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59912714T DE59912714D1 (de) | 1999-10-07 | 1999-10-07 | Verfahren zur Herstellung eines hohlen Verbundisolators |
AT99119832T ATE308106T1 (de) | 1999-10-07 | 1999-10-07 | Verfahren zur herstellung eines hohlen verbundisolators |
EP99119832A EP1091365B1 (de) | 1999-10-07 | 1999-10-07 | Verfahren zur Herstellung eines hohlen Verbundisolators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99119832A EP1091365B1 (de) | 1999-10-07 | 1999-10-07 | Verfahren zur Herstellung eines hohlen Verbundisolators |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1091365A1 EP1091365A1 (de) | 2001-04-11 |
EP1091365B1 true EP1091365B1 (de) | 2005-10-26 |
Family
ID=8239131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99119832A Expired - Lifetime EP1091365B1 (de) | 1999-10-07 | 1999-10-07 | Verfahren zur Herstellung eines hohlen Verbundisolators |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1091365B1 (de) |
AT (1) | ATE308106T1 (de) |
DE (1) | DE59912714D1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011131273A1 (de) | 2010-04-21 | 2011-10-27 | Maschinenfabrik Reinhausen Gmbh | Hochspannungsisolator |
DE102010050684A1 (de) * | 2010-11-06 | 2012-05-10 | Reinhausen Power Composites Gmbh | Hochspannungsisolator |
CN107014692A (zh) * | 2017-04-05 | 2017-08-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | 一种空心复合绝缘子出厂试验评价方法 |
DE102016217621A1 (de) | 2016-09-15 | 2018-03-15 | Siemens Aktiengesellschaft | Herstellungsverfahren für ein elektrisches Betriebsmittel, elektrisches Betriebsmittel und Herstellungsanordnung |
US11114220B2 (en) | 2016-04-06 | 2021-09-07 | Siemens Aktiengesellschaft | Hollow insulator and method for production thereof |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100421189C (zh) * | 2003-09-11 | 2008-09-24 | 马斌 | 一种复合绝缘子及其生产方法 |
WO2007010025A1 (fr) | 2005-07-20 | 2007-01-25 | Areva T & D Sa | Isolateur electrique et procede de fabrication. |
DE102011088248A1 (de) | 2011-12-12 | 2013-06-13 | Wacker Chemie Ag | Verfahren zur Herstellung von Verbundisolatoren |
DE102014004284B4 (de) * | 2014-03-26 | 2019-11-14 | Lapp Insulators Gmbh | Hochspannungsdurchführung |
EP3394863A1 (de) * | 2015-12-24 | 2018-10-31 | General Electric Technology GmbH | Stützstruktur und anordnung für hvdc-trennschalter |
CN112640006B (zh) | 2018-08-30 | 2023-09-29 | 西门子能源全球有限公司 | 电气设备及其制造方法 |
CN109698049A (zh) * | 2018-12-29 | 2019-04-30 | 长园高能电气股份有限公司 | 一种新型复合绝缘子及其生产工艺 |
CN112117067B (zh) * | 2020-10-12 | 2023-01-24 | 中国南方电网有限责任公司超高压输电公司贵阳局 | 一种安装法兰绝缘结构一体式空心复合绝缘子及制造方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2643197C2 (de) * | 1976-09-22 | 1978-07-20 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren, Silikonkautschukmasse und Formbenetzungslösung zur Herstellung von SiUkongununi-Formkörpern |
CH690256A5 (de) * | 1995-06-01 | 2000-06-15 | Cellpack Ag | Isolator für Hochspannungsanlagen. |
JP3059680B2 (ja) * | 1996-09-11 | 2000-07-04 | 日本碍子株式会社 | 複合碍管の成形方法及び複合碍管の製造装置 |
-
1999
- 1999-10-07 AT AT99119832T patent/ATE308106T1/de not_active IP Right Cessation
- 1999-10-07 DE DE59912714T patent/DE59912714D1/de not_active Expired - Lifetime
- 1999-10-07 EP EP99119832A patent/EP1091365B1/de not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011131273A1 (de) | 2010-04-21 | 2011-10-27 | Maschinenfabrik Reinhausen Gmbh | Hochspannungsisolator |
DE102010015729A1 (de) | 2010-04-21 | 2011-10-27 | Maschinenfabrik Reinhausen Gmbh | Hochspannungsisolator |
DE102010015729B4 (de) * | 2010-04-21 | 2015-01-22 | Maschinenfabrik Reinhausen Gmbh | Hochspannungsisolator |
DE102010050684A1 (de) * | 2010-11-06 | 2012-05-10 | Reinhausen Power Composites Gmbh | Hochspannungsisolator |
DE102010050684B4 (de) * | 2010-11-06 | 2015-01-22 | Reinhausen Power Composites Gmbh | Hochspannungsisolator |
US11114220B2 (en) | 2016-04-06 | 2021-09-07 | Siemens Aktiengesellschaft | Hollow insulator and method for production thereof |
DE102016217621A1 (de) | 2016-09-15 | 2018-03-15 | Siemens Aktiengesellschaft | Herstellungsverfahren für ein elektrisches Betriebsmittel, elektrisches Betriebsmittel und Herstellungsanordnung |
WO2018050436A1 (de) | 2016-09-15 | 2018-03-22 | Siemens Aktiengesellschaft | Herstellungsverfahren für ein elektrisches betriebsmittel, elektrisches betriebsmittel und herstellungsanordnung |
CN107014692A (zh) * | 2017-04-05 | 2017-08-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | 一种空心复合绝缘子出厂试验评价方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1091365A1 (de) | 2001-04-11 |
DE59912714D1 (de) | 2005-12-01 |
ATE308106T1 (de) | 2005-11-15 |
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