WO2002063644A1 - Disposition d'assemblage d'une barre electriquement conductrice traversant de part en part une cuve metallique et procede de mise en oeuvre - Google Patents
Disposition d'assemblage d'une barre electriquement conductrice traversant de part en part une cuve metallique et procede de mise en oeuvre Download PDFInfo
- Publication number
- WO2002063644A1 WO2002063644A1 PCT/FR2002/000081 FR0200081W WO02063644A1 WO 2002063644 A1 WO2002063644 A1 WO 2002063644A1 FR 0200081 W FR0200081 W FR 0200081W WO 02063644 A1 WO02063644 A1 WO 02063644A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bar
- wall
- tank
- insulating ring
- electrically conductive
- Prior art date
Links
- 239000002184 metal Substances 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 229920006332 epoxy adhesive Polymers 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase AC
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
Definitions
- the present invention relates to an assembly arrangement of an electrically conductive bar passing right through a metal tank in a leaktight manner. .
- the invention applies in particular, although not limited to, current transformers in which a conductive bar constituting the primary passes through a secondary sensor located in a metal tank filled with oil.
- the tank when passing through one of the walls, the tank must be set to the potential of the bar, while when crossing the other wall, the tank must be isolated from the bar.
- the assembly must be resistant and ensure correct maintenance of the mechanical force applied to the bar.
- the assembly is carried out by bolting and clamping with seals and interposition of an insulating washer at the crossing of one of the walls.
- Another known solution consists in soldering the bar to the orifice of one of the walls, while passing the other wall, the orifice is equipped with an insulating ring against which a shoulder of the bar, seals ensuring sealing.
- the present invention provides a simpler solution with a reduced number of parts.
- the subject of the invention is therefore an arrangement for assembling an electrically conductive bar passing right through a metal tank in leaktight fashion through the orifices of two opposite walls of the tank, characterized in that, on passing through '' a first wall, the seal between the inside and the outside of the tank, as well as the connection between the bar and the wall of the tank, are obtained by an assembly with clamping of the bar in the passage opening of said first wall and in that, at the crossing of the second wall, the bar is equipped with an insulating ring glued to the bar, the insulating ring itself being glued in the orifice for passage of said wall.
- the subject of the invention is also a method for implementing the assembly arrangement, characterized in that said insulating ring is glued to its correct location on said electrically conductive bar, that the end of said bar which has to pass through said first wall with clamping is pre-machined and then soaked in a cooling bath so to bring this end to a temperature below - 100 ° C, that the bar is then introduced into the orifices of the tank, first passing through the orifice of said second wall, after having previously coated with glue the orifice of passage of said second wall and / or the external surface of said insulating ring.
- the invention is now described with reference to the accompanying drawing comprising a single figure showing an assembly arrangement according to the invention in the case of an application to an intensity transformer located in a metal tank full of oil.
- FIG. 1 shows a partial view of a metal tank 1 of which we see two opposite walls 2 and 3.
- the tank contains the secondary windings 4 of a current transformer, the primary of which is constituted by an electrically conductive bar 5 passing through the secondary windings 4. These are supported by an insulating support 6.
- the tank is filled with a dielectric liquid and the electrically conductive bar 5, which passes right through the tank, must therefore do so in a sealed manner when the orifices 7 and 8 of the first wall 2 and of the second wall 3 pass.
- the electrically conductive bar 5 which can be tubular, is connected to a high voltage line in which the currents to be measured circulate which are generally between 50 and 4000 amperes.
- the wall 2 of the tank must be electrically connected to the bar so as to bring the tank to the potential of the bar, while on the other side, the bar 5 must pass through the wall 3 of the tank being isolated.
- the two junctions of the bar 5 on the walls 2 and 3 of the tank must also withstand the mechanical stresses resulting from the line traction forces and bad weather: weight of snow, wind forces, as well as thermal stresses due to variations in temperature of the junctions which can go from - 50 ° C to + 110 ° C.
- These sealing functions, resistance to various stresses and insulation of the bar with respect to one of the walls of the tank, and electrical connection of the bar with respect to the opposite wall of the tank, are carried out, side of the first wall 2, side where the bar is electrically connected to the wall, by simple assembly by clamping, performing the assembly after cooling of the corresponding end 9 of the bar at a temperature below - 100 ° C.
- the assembly is for example of the H7 16 or u6 type with surfaces properly machined both for the orifice 7 of the wall 2 and for the end 9 of the bar.
- the range 9 is of a diameter equal to 93 mm + 0.12 to + 0.14, and the orifice 7 of a diameter equal to 93 mm + 0 to + 0.035.
- the electrically conductive bar 5 is equipped with an insulating ring 10 bonded to the bar, for example with an epoxy adhesive.
- the insulating ring 10 is for example made of epoxy resin reinforced with glass fibers and it has a shoulder 11 which positions the bar by pressing the shoulder against the second wall 3.
- the insulating ring 10 having been previously placed on the bar and glued, the bar 5, on the side of its end 9, is soaked in a bath of liquid nitrogen to bring, as has been said above above, this end at approximately - 150 ° C., then it is introduced in the direction of arrow F until the shoulder 11 rests against the second wall 3.
- the orifice 8 has been coated with glue and, optionally, also the external surface of the insulating ring 10.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Transformer Cooling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/01639 | 2001-02-07 | ||
FR0101639A FR2820540A1 (fr) | 2001-02-07 | 2001-02-07 | Disposition d'assemblage d'une barre electriquement conductrice traversant de part en part une cuve metallique et procede de mise en oeuvre |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002063644A1 true WO2002063644A1 (fr) | 2002-08-15 |
Family
ID=8859715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/000081 WO2002063644A1 (fr) | 2001-02-07 | 2002-01-10 | Disposition d'assemblage d'une barre electriquement conductrice traversant de part en part une cuve metallique et procede de mise en oeuvre |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2820540A1 (fr) |
WO (1) | WO2002063644A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1153118A (fr) * | 1955-04-07 | 1958-03-03 | Westinghouse Electric Corp | Composition de moulage résineuse et objets comportant des prisonniers métalliques moulés en celle-ci |
FR1556122A (fr) * | 1967-03-10 | 1969-01-31 | ||
US3935377A (en) * | 1974-12-24 | 1976-01-27 | Westinghouse Electric Corporation | Electrical bushing comprising a resin body and a ceramic outer shell |
EP0037796A1 (fr) * | 1980-03-27 | 1981-10-14 | Siemens Aktiengesellschaft | Transformateur de courant isolé au gaz ou au liquide |
US4701738A (en) * | 1985-11-15 | 1987-10-20 | Mwb Messwandler-Bau Ag | High-voltage current transformer |
-
2001
- 2001-02-07 FR FR0101639A patent/FR2820540A1/fr active Pending
-
2002
- 2002-01-10 WO PCT/FR2002/000081 patent/WO2002063644A1/fr not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1153118A (fr) * | 1955-04-07 | 1958-03-03 | Westinghouse Electric Corp | Composition de moulage résineuse et objets comportant des prisonniers métalliques moulés en celle-ci |
FR1556122A (fr) * | 1967-03-10 | 1969-01-31 | ||
US3935377A (en) * | 1974-12-24 | 1976-01-27 | Westinghouse Electric Corporation | Electrical bushing comprising a resin body and a ceramic outer shell |
EP0037796A1 (fr) * | 1980-03-27 | 1981-10-14 | Siemens Aktiengesellschaft | Transformateur de courant isolé au gaz ou au liquide |
US4701738A (en) * | 1985-11-15 | 1987-10-20 | Mwb Messwandler-Bau Ag | High-voltage current transformer |
Also Published As
Publication number | Publication date |
---|---|
FR2820540A1 (fr) | 2002-08-09 |
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