NO151103B - PROCEDURE FOR ELECTRICAL AND MECHANICAL CONNECTION OF TWO GRID STARS - Google Patents
PROCEDURE FOR ELECTRICAL AND MECHANICAL CONNECTION OF TWO GRID STARS Download PDFInfo
- Publication number
- NO151103B NO151103B NO791268A NO791268A NO151103B NO 151103 B NO151103 B NO 151103B NO 791268 A NO791268 A NO 791268A NO 791268 A NO791268 A NO 791268A NO 151103 B NO151103 B NO 151103B
- Authority
- NO
- Norway
- Prior art keywords
- rod
- rods
- short
- grid
- connecting piece
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- 239000004020 conductor Substances 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/02—Soldered or welded connections
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
- Coils Of Transformers For General Uses (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Adornments (AREA)
Description
Den foreliggende oppfinnelse vedrører en fremgangsmåte The present invention relates to a method
for elektrisk og mekanisk forbindelse av to gitterstaver, bestående av et flertall delledere, i viklehodet for en elektrisk maskin, ved hvilken gitterstavenes forlengede ender bøyes med sine kortsider mot hverandre, og dellede- for the electrical and mechanical connection of two grid rods, consisting of a plurality of partial conductors, in the winding head of an electrical machine, by which the elongated ends of the grid rods are bent with their short sides towards each other, and partial conductors
rene for hver stav sveises eller loddes sammen med hver- net for each rod is welded or soldered together with each
andre på de respektive stavender. others on the respective letter ends.
Koblingen av enkeltstaver i viklehodet for elektriske maskiner skjer som regel med forbindelsesstykker, ofte kalt oyer, som loddes eller sveises sammen med forbindelsesstykkene. I tysk Offenlegungsschrift 24 30 874, fig. 5 og 6 er slike forbindelsesstykker vist. De består av hver sin hylse som griper om stavenden og er fast forbundet med denne, samt et metallisk mellomstykke som forbinder de to hylsene med hverandre. Slike forbindelsesanordninger har ulemper i to henseendet Ved sam-menkobling av de enkelte staver må stavendene varmes opp meget sterkt ved hardlodding eller sammensveising. Dette er uheldig for stavisolasjonens kvalitet. Med forbindelsesstykkene okes dessuten andelen av massivt (dvs. ikke lamellert ) ledermateriale i viklehodet. Det forer til uonskede stromfortrengnings-tap. The connection of individual rods in the winding head for electrical machines usually takes place with connecting pieces, often called oyer, which are soldered or welded together with the connecting pieces. In German Offenlegungsschrift 24 30 874, fig. 5 and 6 such connecting pieces are shown. They each consist of a sleeve that grips the end of the rod and is firmly connected to it, as well as a metallic intermediate piece that connects the two sleeves to each other. Such connecting devices have disadvantages in two respects. When connecting the individual rods together, the rod ends must be heated very strongly by brazing or welding together. This is unfortunate for the quality of the rod insulation. With the connecting pieces, the proportion of solid (i.e. not laminated) conductor material in the winding head is also increased. This leads to unwanted current displacement losses.
Foreliggende oppfinnelse går ut på å tilveiebringe en forbindelsesanordning, som ikke har de kjente anordningers ulemper og utmerker seg ved en enkel konstruksjon og minst mulig bruk av massive forbindelsesmaterialer. Oppfinnelsen går videre ut på å tilveiebringe en fremgangsmåte for fremstilling av slike forbindelsesanordninger. The present invention aims to provide a connecting device, which does not have the disadvantages of the known devices and is characterized by a simple construction and the least possible use of massive connecting materials. The invention further aims to provide a method for the production of such connection devices.
Forstnevnte oppgave loses ved en forbindelsesanordning av innledningsvis nevnte type ifblge oppfinnelsen ved at stavendene som er boyd mot hverandre, på begge sider munner i de tilnærmet parallelle grener for et forbindelsesstykke med H-profil og der er fast forbundet med dette. The former task is solved by a connecting device of the type mentioned at the outset according to the invention in that the ends of the rods, which are bent against each other, on both sides open into the approximately parallel branches for a connecting piece with an H profile and are firmly connected thereto.
Den nodvendige arbeidsinnsats i forhold til det kjente som folge av ekstra tilboying av stavendene - dellederne av gitterstaven må da bare bbyes på den flate side - blir mer enn oppveiet ved de fordeler som resulterer: The necessary work effort in relation to what is known as a result of extra bending of the rod ends - the partial conductors of the lattice rod must then only be bent on the flat side - is more than offset by the advantages that result:
- Varmetilfbrselen til forbindelsesstykket kan reduseres til - The heat input to the connection piece can be reduced to
et minimum; dessuten kreves bare en gangs oppvarming av forbindelsesstedet. - Bare svært lite massivt ledermateriale er utsatt for front-feltet (Stirnfeld), slik at det praktisk talt ikke oppstår ekstra frontflatetap. - Stavendene kan forbehandles optimalt for montering i maskinen. a minimum; moreover, only one heating of the connection point is required. - Only very little massive conductor material is exposed to the front field (Stirnfeld), so that practically no additional front surface loss occurs. - The rod ends can be optimally pre-treated for installation in the machine.
- Forskjellige stavdimensjoner og/eller (små) avstander som - Different rod dimensions and/or (small) distances such as
må dekkes med forbindelsesstykket kan dekkes med et fåtall H-profiler. - Anordningen av isolasjon i området for forbindelsesanordningen er vesentlig forenklet. must be covered with the connecting piece can be covered with a few H-profiles. - The arrangement of insulation in the area of the connection arrangement is significantly simplified.
Forbindelsesstykkets profil er fortrinnsvis valgt slik at for-bindelsesflåtene mellom hver av stavendene og forbindelsesstykket er storre, fortrinnsvis dobbelt så store som stavtverrsnit-tet. Det sikrer tilstrekkelig styrke og lav overgangsmotstand, selv ved ufullkommen lodding eller sveising, som i hovedsak kommer på tale som forbindelsesteknikk her. The profile of the connecting piece is preferably chosen so that the connecting rafts between each of the rod ends and the connecting piece are larger, preferably twice as large as the rod cross-section. It ensures sufficient strength and low transition resistance, even with imperfect soldering or welding, which mainly comes into question as a connection technique here.
Avstanden mellom forbindelsesstykkets to grener er mindre enn gitterstavens bredde, mens hoyden tilnærmet svarer til gitterstavens. Det har den fordel at sideflatene av stavendene, som munner i forbindelsesstykket, og som kan bearbeides utenfor maskinen, som nevnt, kan tilpasses forbindelsesstykkets form. Ved denne arbeidsoperasjon kan også det foreliggende bindemid-del og/eller stavisolasjonen fjernes optimalt i dette område. The distance between the two branches of the connecting piece is smaller than the width of the lattice rod, while the height corresponds approximately to that of the lattice rod. It has the advantage that the side surfaces of the rod ends, which open into the connecting piece, and which can be machined outside the machine, as mentioned, can be adapted to the shape of the connecting piece. During this work operation, the present adhesive and/or rod insulation can also be optimally removed in this area.
Den innledningsvis nevnte fremgangsmåte kjennetegnes ifølge oppfinnelsen ved at kortflatene og stavendenes sideflater nær kortflatene planbearbeides, at gitterstavenes kortflater, etter montering av de på denne måte bearbeidede gitterstaver, sentreres tilnærmet vinkelrett på stavlengdeaksen i endeområdet og planparallelt mot hverandre eller i en vinkel som avviker fra 90°, hvor begge plan defineres av kortflatene mot stavlengdeaksen i endeområdet, samt står overfor hverandre med stavendene i flukt med hverandre, og at det i det frie rom mellom de to kortflater anbringes steget for et i og for seg kjent H-formet forbindelses- The initially mentioned method is characterized according to the invention by the fact that the short surfaces and the side surfaces of the rod ends close to the short surfaces are machined flat, that the short surfaces of the lattice rods, after assembly of the lattice rods machined in this way, are centered approximately perpendicular to the longitudinal axis of the rod in the end area and plane-parallel to each other or at an angle deviating from 90 °, where both planes are defined by the short surfaces against the length axis of the rod in the end area, as well as facing each other with the rod ends flush with each other, and that in the free space between the two short surfaces the step is placed for a familiar H-shaped connection
stykke hvis ben forløper parallelt med gitterstavenes flatside, og forbindelsesstykket sveises eller loddes sammen med de to stavender i en eneste arbeidsprosess. piece whose leg runs parallel to the flat side of the lattice rods, and the connecting piece is welded or soldered together with the two rod ends in a single work process.
Oppfinnelsen skal i det folge beskrives nærmere under henvis-ning til et utforelseseksempel som er vist i tegningen. Fig. 1 er en gjengivelse i perspektiv av to gitterstaver som skal forbindes med hverandre, vist etter sammensveising av dellederendene. Fig. 2 viser den ferdige forbindelsesanordning i perspektiv. Fig. 3 er et snitt i stavenes lengderetning gjennom forbindelsesanordningen. I fig. 1 er to gitterstaver som skal forbindes med hverandre, betegnet med 1 hhv. 2. Hver gitterstav består av et flertall delledere 3. På kortflatene 4,5 av stavendene er dellederne 3 sveiset eller hardloddet sammen. Etter lodding hhv. sveising er kortflatene planfrest, og det samme gjelder de områder 6 og 7 av stavenes bredsider, som er avgrenset mot gitterstaven for ovrig ved stiplede streker. Som tydeligere vist i fig. 3, er tykkelsen d av staven noe mindre enn i staven for ovrig i de nevnte områder. De to kortflatene ligger tilnærmet planparallelt overfor hverandre og stavendene er på linje med hverandre. Fig. 2 viser den ferdig sammensveisende hhv. loddede forbindelsesanordning. I rommet mellom de to kortflater 4 og 5 er det skjbvet inn et forbindelsesstykke 8 av kopper eller en kopperlegering, hvis steg 9 er sveiset hhv. hardloddet til de to kortflatene, mens dé fire innerflater av grenene 10,11,12, 13 er sveiset hhv. loddet til de bearbeidede bredsider av de to stavendene. The invention will therefore be described in more detail with reference to an embodiment shown in the drawing. Fig. 1 is a rendering in perspective of two lattice rods to be connected to each other, shown after welding the partial ends together. Fig. 2 shows the finished connection device in perspective. Fig. 3 is a section in the longitudinal direction of the rods through the connecting device. In fig. 1 are two grid rods to be connected to each other, denoted by 1 or 2. Each grid rod consists of a plurality of partial conductors 3. On the short faces 4,5 of the rod ends, the partial conductors 3 are welded or brazed together. After soldering or welding, the short surfaces are milled flat, and the same applies to the areas 6 and 7 of the bars' broad sides, which are demarcated from the rest of the grid bar by dashed lines. As more clearly shown in fig. 3, the thickness d of the rod is somewhat smaller than in the rest of the rod in the aforementioned areas. The two card surfaces lie approximately parallel to each other and the ends of the letters are in line with each other. Fig. 2 shows the fully welded or soldered connection device. In the space between the two short surfaces 4 and 5, a connecting piece 8 of copper or a copper alloy is pushed in, whose step 9 is welded or brazed to the two card surfaces, while the four inner surfaces of the branches 10,11,12, 13 are welded respectively. soldered to the machined broadsides of the two rod ends.
Som vist ved snittet i fig. 3, er avstanden d mellom grenene 10, 13 hhv. 11,12 mindre enn tykkelsen D av gitterstavene 1 hhv. 2. Begrensningsflatene 14,15 for forbindelsesstykket er plane. As shown by the section in fig. 3, the distance d between the branches is 10, 13 respectively. 11,12 less than the thickness D of the lattice bars 1 or 2. The limiting surfaces 14,15 for the connecting piece are flat.
Det muliggjor optimal tilpasning til kontaktstykkene 16,17 It enables optimal adaptation to the contact pieces 16,17
for et (ikke vist) motstandsvarmeanlegg. Kontaktstykkene er an-tydet ved strekede linjer. Ved induktiv varming erstattes kontaktstykkene av induktorer for tilhbrende mellomfrekvens-induksjonsvarmeanordning. Forbindelsesstykkets ytre begrens-ningsflater kan også ha en annen form. De kan f.eks. være av-rundet. Det letter isolasjonen (ikke vist) av hele forbindelsesanordningen (særlig ved isolasjoner som vikles for hånd). for a (not shown) resistance heating system. The contact pieces are indicated by dashed lines. In the case of inductive heating, the contact pieces are replaced by inductors for the corresponding intermediate frequency induction heating device. The outer boundary surfaces of the connecting piece can also have a different shape. They can e.g. be rounded off. It facilitates the insulation (not shown) of the entire connection device (especially with insulations wound by hand).
For fremstilling av forbindelsesanordningen blir gitterstavenes 1,2 stavender boyd tilsvarende deres senere forlop i viklehodet. Det kan allerede skje i forbindelse med bearbeiding av dellederne. Deretter blir dellederendene sveiset eller loddet sammen i endeområdet. Etter påfbring og fullforing av hovedisola-sjonen skjer bearbeid ing av kortflatene 4 og 5 samt nærliggen-de sideflater 6 og 7. Det kan f.eks. gjores med en profil-fre-ser. Ved denne arbeidsoperasjon fjernes samtidig bindemiddel-rester og/eller stavisolasjonen. Etter at gitterstavene er lagt i maskinen, blir de rettet opp og de H-formede forbindelsesstykker 8 settes på. Det kan benyttes kopperprofillister som kappes tilsvarende. Etter anbringelse av forbindelsesstykkene varmes de til loddetemperatur ved hjelp av en (i og for seg kjent) induktiv eller konduktiv varmeanordning og hardloddes på i og for seg kjent måte med stavendene. For the production of the connection device, the rod ends of the lattice rods 1,2 are bent corresponding to their later course in the winding head. It can already happen in connection with the processing of the partial conductors. The partial conductor ends are then welded or soldered together in the end area. After application and completion of the main insulation, the short surfaces 4 and 5 as well as the nearby side surfaces 6 and 7 are processed. This can e.g. is done with a profile milling cutter. During this work operation, binder residues and/or the rod insulation are removed at the same time. After the lattice bars have been placed in the machine, they are straightened and the H-shaped connecting pieces 8 are put on. Copper profile strips can be used which are cut accordingly. After placing the connecting pieces, they are heated to soldering temperature by means of a (known per se) inductive or conductive heating device and brazed in a per se known manner with the ends of the rods.
Deretter folger - om nodvendig - pussing av forbindelsesstedet og påfbring av isolasjonen. This is followed - if necessary - by plastering the connection point and applying the insulation.
I det ovenfor omtalte utforelseseksempel står stavendenes kortflater vinkelrett på stavenes lengdeakse. Disse flater kan dog også omslutte en vinkel som avviker fra 90° med stavenes lengdeakse. Det ligger også innenfor oppfinnelsens ramme når de plan som bestemmes av de plane kortflater omslutter en vinkel avvikende fra null med "hverandre og når steget 9 for forbindelsesstykket 8 har en form som er tilpasset kortfla-tenes. Vindskjeve i forhold til hverandre bor de nevnte plan bare være i liten grad, tilsvarende de vanlige produksjons-toleranser. In the embodiment example mentioned above, the short surfaces of the rod ends are perpendicular to the longitudinal axis of the rods. However, these surfaces can also enclose an angle that deviates from 90° with the longitudinal axis of the rods. It is also within the scope of the invention when the planes determined by the planar card faces enclose an angle deviating from zero with each other and when the step 9 for the connecting piece 8 has a shape that is adapted to the card faces. only be to a small extent, corresponding to the usual production tolerances.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH430478A CH627313A5 (en) | 1978-04-21 | 1978-04-21 |
Publications (3)
Publication Number | Publication Date |
---|---|
NO791268L NO791268L (en) | 1979-10-23 |
NO151103B true NO151103B (en) | 1984-10-29 |
NO151103C NO151103C (en) | 1985-02-06 |
Family
ID=4273579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO791268A NO151103C (en) | 1978-04-21 | 1979-04-17 | PROCEDURE FOR ELECTRICAL AND MECHANICAL CONNECTION OF TWO GRID STARS |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT363144B (en) |
BR (1) | BR7902408A (en) |
CH (1) | CH627313A5 (en) |
DE (2) | DE7814328U1 (en) |
ES (1) | ES479756A1 (en) |
GB (1) | GB2019663B (en) |
IT (1) | IT1113885B (en) |
NO (1) | NO151103C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19840125A1 (en) * | 1998-09-03 | 2000-03-09 | Abb Patent Gmbh | Connection of electrical conductors and method for connecting electrical conductors |
DE10215937A1 (en) * | 2002-04-11 | 2003-10-23 | Alstom Switzerland Ltd | Winding for a dynamoelectric machine |
US7449808B2 (en) * | 2005-10-25 | 2008-11-11 | General Electric Company | Stranded bar to solidified bar braze method and series loop connection |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH70334A (en) * | 1915-02-19 | 1915-09-16 | Oerlikon Maschf | Junction point of multi-conductor coils of stators of electrical machines |
DE1892687U (en) * | 1963-11-05 | 1964-05-14 | Bbc Brown Boveri & Cie | JOINT POINT OF TWO LADDER BARS OF AN ELECTRICAL MACHINE. |
US3675058A (en) * | 1970-09-08 | 1972-07-04 | Gen Electric | Dynamoelectric machine utilizing pre-formed winding connectors and method of making |
DE2425457A1 (en) * | 1974-05-27 | 1975-12-11 | Kraftwerk Union Ag | Turbogenerator windings switching connection - has soldered end pieces around laminar conductors in different winding bars screwed together |
-
1978
- 1978-04-21 CH CH430478A patent/CH627313A5/de not_active IP Right Cessation
- 1978-05-12 DE DE19787814328U patent/DE7814328U1/en not_active Expired
- 1978-05-12 DE DE19782820735 patent/DE2820735A1/en active Granted
-
1979
- 1979-02-12 AT AT0104879A patent/AT363144B/en not_active IP Right Cessation
- 1979-04-12 IT IT21799/79A patent/IT1113885B/en active
- 1979-04-17 NO NO791268A patent/NO151103C/en unknown
- 1979-04-19 GB GB7913544A patent/GB2019663B/en not_active Expired
- 1979-04-19 BR BR7902408A patent/BR7902408A/en unknown
- 1979-04-19 ES ES479756A patent/ES479756A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES479756A1 (en) | 1980-01-16 |
DE2820735A1 (en) | 1979-10-31 |
ATA104879A (en) | 1980-12-15 |
DE2820735C2 (en) | 1987-12-23 |
IT1113885B (en) | 1986-01-27 |
GB2019663B (en) | 1982-11-17 |
CH627313A5 (en) | 1981-12-31 |
AT363144B (en) | 1981-07-10 |
IT7921799A0 (en) | 1979-04-12 |
BR7902408A (en) | 1979-10-23 |
NO151103C (en) | 1985-02-06 |
DE7814328U1 (en) | 1980-02-07 |
GB2019663A (en) | 1979-10-31 |
NO791268L (en) | 1979-10-23 |
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