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公开(公告)号:DE19542162A1
公开(公告)日:1997-05-15
申请号:DE19542162
申请日:1995-11-11
Applicant: ABB RESEARCH LTD
Inventor: BAIATU TUDOR DR , ETTER PETER , FRIED REINHARD , WIESMANN HANS JUERG DR
Abstract: The current limiting device is formed by a pair of zig zag shaped PTC resistors (1,2) that are placed in parallel and are separated by an insulating layer. Electrical connection points (A,B) are formed at each end. The reactive layers can be formed in a foil using a chemical or electro-chemical process. The layers may be located in grooves formed in a thermally cooling material that has flow channels through which a cooling fluid flows.
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公开(公告)号:CZ40796A3
公开(公告)日:1996-08-14
申请号:CZ40796
申请日:1996-02-12
Applicant: ABB RESEARCH LTD
Inventor: ERNST PETER , FRIED REINHARD
Abstract: Guide blade in which all the capillaries (11) of the porous cover (7) are filled with extracted fluid. A wall which maintains the negative pressure effect in the cavity (6) is formed by the porous cover and the fluid filled capillaries. The cover may be made from a high porosity sintered material using a Cr-Ni-steel base, an X20Cr Mo-steel base, a bronze base (CuSn10) or a low pressure plastic base. The cover is joined to the blade by soldering, welding, adhesion and/or a mechanical pressing.
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公开(公告)号:DE4322084A1
公开(公告)日:1995-01-12
申请号:DE4322084
申请日:1993-07-02
Applicant: ABB RESEARCH LTD
Inventor: FRIED REINHARD
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公开(公告)号:DE19545025A1
公开(公告)日:1997-06-05
申请号:DE19545025
申请日:1995-12-02
Applicant: ABB RESEARCH LTD
Inventor: FRIED REINHARD
IPC: C23C24/10 , C23C4/02 , C23C4/18 , C23C24/08 , C23C26/00 , C23C28/00 , C23C4/04 , C23C4/12 , B23K35/22 , B23K1/19 , B23K1/00
Abstract: A method of applying a metallic bonding layer for thermally sprayed ceramic heat insulating layers (6) on metallic components involves (a) applying a binder onto the degreased and oxide-free metallic surface of the substrate material (2); (b) applying metallic bonding powder (4) uniformly onto the binder; (c) applying solder powder (5), of smaller particle size than the bonding powder (4), uniformly onto the binder; and (d) drying the binder and heat treating to effect soldering. In an alternative method, an oxidation and corrosion resistant layer is produced on the cleaned metallic surface by gas-shielded plasma spraying prior to step (a), the bonding powder is a coarse powder having the same composition as this oxidation and corrosion resistant layer, step (c) is omitted and step (d) comprises drying the binder and then heat treating (solution annealing) to form a sintered bond between the metallic component and the oxidation and corrosion resistant layer and between the oxidation and corrosion resistant layer and the bonding powder. Also claimed are metallic bonding layers produced by the above methods.
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公开(公告)号:CZ9600407A3
公开(公告)日:1996-08-14
申请号:CZ40796
申请日:1996-02-12
Applicant: ABB RESEARCH LTD
Inventor: ERNST PETER , FRIED REINHARD
CPC classification number: F01D25/32
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公开(公告)号:EP0773562A3
公开(公告)日:1998-10-28
申请号:EP96810736
申请日:1996-11-05
Applicant: ABB RESEARCH LTD
Inventor: BAIATU TUDOR DR , ETTER PETER , FRIED REINHARD , WIESMANN HANS-JUERGEN DR
Abstract: Strombegrenzer, vorzugsweise aus Kaltleitern (21, 22), werden zur Kurzschlußstrombegrenzung in Reihenschaltung zu Kondensatoren und Stromrichterventilen eingesetzt. Mit diesen Kaltleitern (21, 22) betriebene Schutzeinrichtungen können reversibel arbeiten und lichtbogenfrei ansprechen. Sie sind niederinduktiv und raumsparend einsetzbar. Schutzschaltungen mit derartigen Kaltleitern (21, 22) sind verlustarm, rüttelfest und in einen bestehenden Kühlkreislauf integrierbar; sie sprechen autonom an und ermöglichen eine flexible Applikation. Die Kaltleiter (21, 22) sind vorzugsweise mäanderförmig aus porösem Metallschaum oder aus einem Metallgeflecht oder -gewebe ausgeführt und weisen elektrische Kontaktbrücken (23, 23'; 24, 24') zwischen ihren Widerstandsbahnen (21a - 21c; 22a - 22c) auf. Mindestens 2 elektrisch parallelgeschaltete Widerstandsbahnen sind in geringem Abstand übereinander derart angeordnet, daß Teilströme (I1, I2) durch so gebildete Widerstandszweige in übereinanderliegenden Bahnbereichen in zueinander entgegengesetzten Richtungen fließen. Die Widerstandsbahnen können auch in Nuten eines Kühlkörpers angeordnet sein oder kreisförmige Gestalt aufweisen. In einer Reihenschaltung zu mäanderförmigen, parallelgeschalteten Widerstandsbahnen kann ein Kompensationswiderstand zur Kompensation von unkompensierten Randbereichen dieser Widerstandsbahnen vorgesehen sein.
Abstract translation: 限流装置由平行放置并由绝缘层分开的一对锯齿形PTC电阻器(1,2)形成。 电连接点(A,B)形成在两端。 反应层可以使用化学或电化学方法在箔中形成。 这些层可以位于形成在具有冷却流体流过的流动通道的热冷却材料中的槽中。
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