EP0807310B1 - Isolator mit kittverbindung und verfahren zu seiner herstellung - Google Patents
Isolator mit kittverbindung und verfahren zu seiner herstellung Download PDFInfo
- Publication number
- EP0807310B1 EP0807310B1 EP96901742A EP96901742A EP0807310B1 EP 0807310 B1 EP0807310 B1 EP 0807310B1 EP 96901742 A EP96901742 A EP 96901742A EP 96901742 A EP96901742 A EP 96901742A EP 0807310 B1 EP0807310 B1 EP 0807310B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- metal part
- electrical insulator
- shell
- filler
- 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.)
- Revoked
Links
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
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
Definitions
- the invention relates to an electrical insulator with at least one on one Insulated body cemented armature.
- Isolators and in particular High voltage insulators are used in large numbers in overhead lines and Outdoor switchgear used.
- Most isolators consist of one Insulating body with a non-positive and / or positive fit at the ends of the insulating body attached fittings in the form of metal caps. These serve primarily the Power transmission.
- the outer diameter of the insulated trunk and at Hollow insulators in addition to the wall thickness of the insulator body trunk are all designed according to the mechanical load on the insulator. Each according to the size and type of mechanical stress, the trunk ends and Faucets designed differently.
- the insulating body and the associated Fittings are usually essentially rotationally symmetrical educated.
- Support or / and hollow insulators have predominantly cylindrical trunk ends. Such trunk ends are often round or at the socket crushed crushed stone, which is sintered in a glaze layer; this improves as well as corrugations, corrugations or rough areas in the area the socket the positive and / or positive connection.
- the gap between the valve and shank end is usually with setting or hardening Putty materials such as Cement mortar filled out.
- support or / and hollow insulators become the cylindrical, split trunk ends often with a lean Portland cement with a non-positive and / or positive fit connected to a fitting, usually made of galvanized cast iron or one Aluminum alloy is made.
- EP-A-0 615 259 teaches a method of making a putty joint between an insulating body and a fitting, in which the cement gap only with partially filled with a quick-curing first putty and then with a slowly setting second putty is filled.
- the permanent valve displacement is the one day after routine tests still existing displacement between the underside of the valve and the end face of the insulation trunk as a result of the previously applied routine test load according to EN 50062, DIN VDE 0674, Part 3, November 1992, in relation to the position before the routine test load.
- the valve is mainly moved in the longitudinal direction of the isolator and also tilts when the forces are applied laterally. It can be connected to an expansion of the valve circumference.
- the position of the fitting is measured by means of a dial gauge as the distance between the ground insulating body face and a flat, position-marked bar placed on the fitting face every 90 ° in the direction of the longitudinal axis of the insulator;
- the largest difference value determined on a valve between assigned measured values before and after routine tests is used as the value for the permanent valve displacement.
- the break attempt is one of the more frequently performed mechanical tests, where a hollow insulator is subjected to a bending test in accordance with EN 50062, DIN VDE 0674, Part 3, November 1992, in a multi-stage trial maximum resilience and is therefore tested until it breaks.
- Isolators that are not hollow insulators can in a similar way according to IEC 168, 1988, being checked.
- the insulator is firmly clamped at the foot end and on opposite end drawn perpendicular to its longitudinal axis. Under the The bending stress becomes the maximum load that can be tolerated Understood.
- the invention has for its object an insulator with a putty connection propose both a high bending moment and a low one permanent valve movement guaranteed.
- kits bowl and the fitting different layers There are preferably two, three or four between the kit bowl and the fitting different layers applied.
- Each of these layers can be made several layers of the same material.
- One of those layers can be an adhesive layer applied directly to the valve, which the Adhesion between the fitting and the second one applied to the fitting Layer should improve.
- the insulator can u. a. made of ceramic or glass according to IEC 672, 1980, exist.
- the fittings usually consist of galvanized Cast iron or an aluminum alloy. The shapes of the fittings are specifically designed. You can have a sawtooth profile on the Have side facing the socket.
- the kit bowl is there usually from a set or hardened putty material.
- the layer of the laminate facing the valve which the valve of Protects corrosion, has a layer thickness of 5 to 1000 microns, preferably from 20 to 500, in particular from 80 to 200 microns.
- This layer consists of Use of mortars or cements from an alkali-resistant layer, preferably from alkali resistant corrosion protection materials such as. B. cast resin, reaction or synthetic resin paint, particularly preferably made of two-component epoxy resin.
- the anti-corrosion material is preferred sprayed or spread.
- the slippery layer of the laminate which is a movement between Kit tray and fitting enables and catches, can rather a subordinate Have anti-corrosion function. You can directly on the Corrosion protection layer must be applied.
- This layer can consist of one Bitumen-containing paint, from another lubricious Paint or a lubricant such as Lubricants based Molybdenum disulfide or graphite, metal lubricants, lubricating varnishes, greases and / or Oils exist.
- the material of this layer must be against the putty material Kit bowl made of hardened or water-set putty material and also be largely resistant to the water it may contain. It can be spread or sprayed onto the coated fitting.
- the layer thickness of this layer can be 2 to 1000 ⁇ m, preferably 5 to 200 ⁇ m, in particular 10 to 80 microns.
- the object is achieved by a method for producing a electrical insulator with at least one cemented onto an insulating body Fitting released, in which the insulating body is connected to the fitting via a kit bowl is connected and that is characterized in that the kit bowl facing inside of the valve with at least one Corrosion protection layer and the movement between the kit shell and Armature-enabling layer is coated.
- Mainly mortar and cement can be used as cement material.
- a grouting mortar that is easy to install in the Gap cast between the trunk end of the insulating body and the fitting is particularly easy to process and because of the quick setting Cheap.
- a grout does not need like other mortars and Cements to be shaken.
- valve and insulating body materials are used, using cement, mortar or similar putty materials and, if necessary be cemented with the addition of other substances.
- the isolators according to the invention, especially high-voltage insulators, are particularly suitable as support or / and hollow insulators.
- the individual layers can usually be Sawing the fitting and scratching the layered composite visually well perceive.
- the task could only be accomplished by using at least two layers with different composition of matter and with different properties of the layer materials, wherein the layer facing the kit shell is necessary in order to to enable controlled relative movement between the kit bowl and the fitting, to absorb the forces that occur and the kit bowl in the Tension the fitting so that both high bending moments and also small permanent valve movements due to a controlled Sliding movement can be achieved.
- One applied between the sintered split layer and the kit bowl Layer of bituminous paint has on the permanent Fitting movement has little or no impact.
- This layer preferably has an adhesive effect and with regard to the different Thermal expansion has a dampening effect, especially between the insulating body and Kit bowl.
- Figure 1 shows a longitudinal section through a hollow insulator in the area around the Socket.
- the insulating body 1 has one in its center In the longitudinal direction extending, cylindrical cavity 2.
- grit 4 In the field of Socket 3 is applied to the surface of the insulating body 1 grit 4, which can be sintered with a glaze and possibly also an additional layer 5 can have bituminous paint material.
- the armature 6 shows a sawtooth-like profile on the side facing socket 3 and is covered with a layer composite 7 from two layers 8 and 9.
- the Corrosion protection layer 8 is one of the movement between armature 6 and kit shell 10 enabling and catching lubricious layer 9 overlaid.
- the gap between the insulating body 1 and armature 6 is mainly with set or hardened putty material that forms the kit shell 10, filled out.
- the slippery layer 9 occurs after and for a limited time a load a relative movement between the valve and the kit bowl takes place: When loaded, approximately in the direction of the arrow, then in approximately opposite direction.
- the insulating body end face 11 is approximately parallel to the valve face 12.
- Figure 2 shows the detail II of Figure 1 enlarged.
- a so-called medium-sized earth insulator was used for the tests selected, which is common and for operation as a hollow insulator at 145 kV is provided.
- the insulating bodies of the test specimens were made of alumina porcelain.
- the cylindrical trunk ends had one in the area of the socket Outside diameter of approximately 200 mm.
- the fittings consisted of the aluminum alloy G-AlSi10Mg wa and had an internal sawtooth profile.
- the Fittings were covered over the entire inside with the in Table 1 specified materials coated. The coatings were applied by spraying. Other parameters influencing the cementation were kept constant.
- the structure of the layers and the results of the tests are listed in Tables 1 and 2.
- the layer thicknesses were measured eight times over the valve circumference and are approximate values for the slightly fluctuating layer thickness. Structure of the layers. The layer thicknesses are averages over several tests. The layer thickness of the assembly spray was not determined.
- the break test was carried out in the same orientation of the insulator to the test apparatus as in the fourth loading of the bending test. The load was applied until the hollow insulators broke by bending. In each experiment, the three insulators were broken at the top and bottom. Here, 8 strain gauges were attached perpendicular to the longitudinal direction of the insulator on the outwardly projecting edge of the fitting of each fitting in order to determine the fitting expansions. The values of the bending moments were averaged from 6 measured values in each case. Results of the experiments.
- the measured values for the valve expansion which are used in the wrapping tests according to EN 50062 measured at a nominal bending moment of 20 kNm, confirm as it is known analogously from shrink connections that high Radial stresses allow high bending moments.
- the measured high Strain values are based on a relative movement between the kit shell and Fitting, in which the fitting essentially in the longitudinal direction of the isolator Kit case is pulled away from the insulating body; here the fitting is sawtooth-like profile of the fitting and the kit bowl expanded in diameter.
- the moveable layer is crucial for the high valve expansion Load on the putty. This results in a high on the kit bowl effective radial stress with the consequence of high break values. Farther is released when the kit tray is relieved at the end of each mechanical test controlled slide back of the valve and thus a low permanent Valve shift reached.
Description
Aufbau der Schichten. Die Schichtdicken sind Mittelwerte über mehrere Versuche. Die Schichtdicke des Montagesprays wurde nicht bestimmt. | ||
Beispiel | Korrosionsschutzschicht | bewegliche Schicht |
VB 1 | 99 µm bituminöser Anstrich | fehlt |
VB 2 | 162 µm Epoxidharz | fehlt |
B 3 | 114 µm Epoxidharz | Montagespray |
B 4 | 140 pm Epoxidharz | 28 µm bituminöser Anstrich |
B 5 | 144 µm Epoxidharz | 13 µm bituminöser Anstrich |
B 6 | 137 µm Epoxidharz | 58 µm bituminöser Anstrich |
Ergebnisse der Versuche. | ||||
Beispiel | bleibende Armaturenverschiebung | Biegebruchmoment mittleres minimales | Armaturendehnung | |
mm | kNm | kNm | µm/m | |
VB 1 | 0,152 | 41,55 | 36,00 | 542 |
VB 2 | 0,019 | 34,02 | 20,70 | 292 |
B 3 | 0,052 | 43,05 | 30,00 | 513 |
B 4 | 0,007 | 37,60 | 29,30 | 488 |
B 5 | 0,032 | 48,40 | 43,70 | n. b. |
B 6 | 0,015 | 46,70 | 43,50 | n. b. |
Claims (13)
- Elektrischer Isolator mit mindestens einer auf einen Isolierkörper (1) aufgekitteten Armatur (6), bei dem der Isolierkörper (1) über eine Kittschale (10) mit der Armatur (6) verbunden ist, dadurch gekennzeichnet, daß auf der Armatur (6) zwischen der Kittschale (10) und der Armatur (6) ein Schichtverbund (7) aufgetragen ist, der mindestens zwei Schichten (8,9) aus unterschiedlichen Materialien enthält, daß mindestens eine der Schichten die Armatur vor Korrosion schützt und daß mindestens eine andere Schicht eine Bewegung zwischen Kittschale (10) und Armatur (6) ermöglicht.
- Elektrischer Isolator nach Anspruch 1, dadurch gekennzeichnet, daß die Schicht (8) mit Korrosionsschutzfunktion eine Schichtdicke von 5 bis 1000 µm, bevorzugt von 20 bis 500 µm, insbesondere von 80 bis 200 µm aufweist.
- Elektrischer Isolator nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die die Bewegung zwischen Kittschale und Armatur ermöglichende Schicht (9) eine Schichtdicke von 2 bis 1000 µm, bevorzugt von 5 bis 200 µm, insbesondere von 10 bis 80 µm aufweist.
- Elektrischer Isolator nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß auf der Armatur (6) zwei, drei oder vier Schichten aus unterschiedlichen Materialien aufgetragen sind.
- Elektrischer Isolator nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß eine von mindestens drei Schichten eine auf die Armatur (6) aufgetragene Haftvermittlerschicht ist.
- Elektrischer Isolator nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß auf den Isolierkörper (1) im Bereich einer Fassungsstelle (3) eine Splittschicht (4) aufgebracht ist, auf die vorzugsweise eine Schicht (5) eines bituminösen Anstrichmaterials aufgetragen ist.
- Elektrischer Isolator nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Schicht (8) mit Korrosionsschutzfunktion ein Gießharz oder einen Reaktions- oder Kunstharzlack, insbesondere ein Epoxidharz, enthält.
- Elektrischer Isolator nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die die Bewegung zwischen Kittschale (10) und Armatur (6) ermöglichende Schicht (9) ein gleitfähiges Anstrichmaterial oder einen Schmierstoff enthält.
- Elektrischer Isolator nach Anspruch 8, dadurch gekennzeichnet, daß das gleitfähige Anstrichmaterial oder der Schmierstoff ein Bitumen-haltiges Anstrichmaterial, Schmiermittel auf Basis Molybdändisulfid oder Grafit, Gleitlack, Metallschmiermittel, Fett oder Öl ist.
- Verfahren zur Herstellung eines elektrischen Isolators mit mindestens einer auf einen Isolierkörper (1) aufgekitteten Armatur (6), bei dem der Isolierkörper (1) über eine Kittschale (10) mit der Armatur (6) verbunden wird, dadurch gekennzeichnet, daß die der Kittschale (10) zugewandte Innenseite der Armatur (6) mindestens mit einer Schicht (8) mit Korrosionsschutzfunktion und einer die Bewegung zwischen Kittschale und Armatur ermöglichenden Schicht (9) beschichtet wird.
- Verfahren zur Herstellung eines elektrischen Isolators nach Anspruch 10, dadurch gekennzeichnet, daß das Material für die Schicht (8) mit Korrosionsschutzfunktion auf die Armatur (6) oder auf eine auf die Armatur (6) aufgebrachte Haftvermittlerschicht aufgestrichen oder aufgespritzt wird.
- Verfahren zur Herstellung eines elektrischen Isolators nach Anspruch 10, dadurch gekennzeichnet, daß die die Bewegung zwischen Kittschale (10) und Armatur (6) ermöglichende Schicht (9) auf die beschichtete Armatur (6) aufgestrichen oder aufgespritzt wird.
- Verfahren zur Herstellung eines elektrischen Isolators nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß als Kittmaterial ein Vergußmörtel in den Spalt zwischen Isolierkörper (1) und beschichteter Armatur (6) gegossen wird und dort abbindet.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19503324 | 1995-02-02 | ||
DE19503324A DE19503324A1 (de) | 1995-02-02 | 1995-02-02 | Isolator mit Kittverbindung und Verfahren zu seiner Herstellung |
PCT/EP1996/000226 WO1996024144A1 (de) | 1995-02-02 | 1996-01-19 | Isolator mit kittverbindung und verfahren zu seiner herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0807310A1 EP0807310A1 (de) | 1997-11-19 |
EP0807310B1 true EP0807310B1 (de) | 1998-10-14 |
Family
ID=7752969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96901742A Revoked EP0807310B1 (de) | 1995-02-02 | 1996-01-19 | Isolator mit kittverbindung und verfahren zu seiner herstellung |
Country Status (15)
Country | Link |
---|---|
US (1) | US5985087A (de) |
EP (1) | EP0807310B1 (de) |
JP (1) | JPH10513004A (de) |
CN (1) | CN1089936C (de) |
AT (1) | ATE172321T1 (de) |
BR (1) | BR9607580A (de) |
CA (1) | CA2212255C (de) |
CZ (1) | CZ289279B6 (de) |
DE (2) | DE19503324A1 (de) |
ES (1) | ES2122783T3 (de) |
FI (1) | FI960446A (de) |
IL (1) | IL116979A (de) |
PL (1) | PL178732B1 (de) |
WO (1) | WO1996024144A1 (de) |
ZA (1) | ZA96775B (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2765385B1 (fr) * | 1997-06-26 | 2003-12-05 | Gec Alsthom T & D Sa | Ferrure d'isolateur composite |
IT1299049B1 (it) * | 1998-04-08 | 2000-02-07 | Abb Research Ltd | Isolatore particolarmente per linee elettriche di trasmissione e distribuzione, avente caratteristiche migliorate di resistenza alle |
DE10213111A1 (de) * | 2002-03-23 | 2003-10-02 | Tesa Ag | Mehrschichtige Laser-Transferfolie zum dauerhaften Beschriften von Bauteilen |
EP1995739B1 (de) * | 2007-05-23 | 2011-08-17 | ABB Technology AG | Hochspannungsisolator und Kühlelement mit diesem Hochspannungsisolator |
US10584475B1 (en) * | 2019-06-19 | 2020-03-10 | Soleman Abdi Idd | Method and system for construction and building |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3576938A (en) * | 1969-11-07 | 1971-05-04 | Gen Electric | Electrical insulator with polymer-containing joint between the porcelain and the hardware |
FR2292318A1 (fr) * | 1974-11-25 | 1976-06-18 | Ceraver | Perfectionnement a la liaison entre ame et armatures de structures comportant une ame de fibres agglomerees |
US4267402A (en) * | 1978-08-07 | 1981-05-12 | Gould Inc. | Polymer concrete body with vibration molded threads, method of making same, and electrical insulator provided with the same |
FR2445596A2 (fr) * | 1978-12-27 | 1980-07-25 | Ceraver | Perfectionnement a la liaison entre ame et armatures de structures comportant une ame de fibres agglomerees |
FR2499301A1 (fr) * | 1981-02-05 | 1982-08-06 | Ceraver | Isolateur en matiere organique comportant une ame en stratifie |
DE4212146C1 (en) * | 1992-04-10 | 1993-08-19 | Siemens Ag, 8000 Muenchen, De | Light conductor with optical fibres inside three consecutive layers - has its fibres loosely embedded in filling paste, then inside second polymer with higher thermal stability and outermost extruded sleeve |
FR2702081B1 (fr) * | 1993-02-26 | 1995-05-12 | Gec Alsthom T & D Sa | Isolateur. |
ATE138220T1 (de) * | 1993-03-12 | 1996-06-15 | Gec Alsthom T & D Ag | Verfahren zum herstellen einer kittverbindung zwischen einem isolator und einer armatur und isolatoranordnung |
WO1995026560A1 (en) * | 1994-03-28 | 1995-10-05 | Ngk Insulators, Ltd. | Conductive insulator |
-
1995
- 1995-02-02 DE DE19503324A patent/DE19503324A1/de not_active Ceased
-
1996
- 1996-01-19 WO PCT/EP1996/000226 patent/WO1996024144A1/de not_active Application Discontinuation
- 1996-01-19 PL PL96321681A patent/PL178732B1/pl not_active IP Right Cessation
- 1996-01-19 CZ CZ19972420A patent/CZ289279B6/cs not_active IP Right Cessation
- 1996-01-19 CA CA002212255A patent/CA2212255C/en not_active Expired - Fee Related
- 1996-01-19 DE DE59600669T patent/DE59600669D1/de not_active Expired - Fee Related
- 1996-01-19 ES ES96901742T patent/ES2122783T3/es not_active Expired - Lifetime
- 1996-01-19 BR BR9607580A patent/BR9607580A/pt active Search and Examination
- 1996-01-19 US US08/875,691 patent/US5985087A/en not_active Expired - Fee Related
- 1996-01-19 AT AT96901742T patent/ATE172321T1/de not_active IP Right Cessation
- 1996-01-19 EP EP96901742A patent/EP0807310B1/de not_active Revoked
- 1996-01-19 JP JP8523204A patent/JPH10513004A/ja not_active Ceased
- 1996-01-19 CN CN96191727A patent/CN1089936C/zh not_active Expired - Fee Related
- 1996-01-31 FI FI960446A patent/FI960446A/fi not_active IP Right Cessation
- 1996-01-31 IL IL11697996A patent/IL116979A/xx not_active IP Right Cessation
- 1996-02-01 ZA ZA96775A patent/ZA96775B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
PL321681A1 (en) | 1997-12-22 |
JPH10513004A (ja) | 1998-12-08 |
WO1996024144A1 (de) | 1996-08-08 |
DE59600669D1 (de) | 1998-11-19 |
DE19503324A1 (de) | 1996-08-08 |
CN1172546A (zh) | 1998-02-04 |
FI960446A0 (fi) | 1996-01-31 |
CA2212255A1 (en) | 1996-08-08 |
IL116979A (en) | 2000-07-16 |
CZ242097A3 (en) | 1997-11-12 |
CZ289279B6 (cs) | 2001-12-12 |
PL178732B1 (pl) | 2000-06-30 |
CA2212255C (en) | 2004-10-26 |
ZA96775B (en) | 1996-08-12 |
FI960446A (fi) | 1996-08-03 |
EP0807310A1 (de) | 1997-11-19 |
ATE172321T1 (de) | 1998-10-15 |
CN1089936C (zh) | 2002-08-28 |
IL116979A0 (en) | 1996-05-14 |
US5985087A (en) | 1999-11-16 |
ES2122783T3 (es) | 1998-12-16 |
BR9607580A (pt) | 1998-07-07 |
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