公开(公告)号：JPH0864823A

公开(公告)日：1996-03-08

申请号：JP19842895

申请日：1995-08-03

Applicant: ABB MANAGEMENT AG

Inventor： FURIITOHERUMU BAUAA

IPC: H01L29/74 ,  H01L29/06 ,  H01L29/08 ,  H01L29/739 ,  H01L29/745 ,  H01L29/749 ,  H01L29/78

Abstract: PROBLEM TO BE SOLVED: To reduce susceptibility to oscillation of components by specifying the percentage of all component surface area, in the case of having a cathode cell of circular cell geometry or of strip-shaped geometry. SOLUTION: In order to reduce the susceptibility of component oscillation, the bonding between an anode 4 and a cathode 3 is enhanced. This is attained by raising a gate 5-anode 4 capacitance. Therefor, a separation (d) between two cathode cells 6 is significantly widened as compared with the conventional technology. A separation standard is represented by a surface area percentage of the cathode/cell 6 to the entire surface region of the component. By making the percentage of cathode/cell 6 to be 0.1-10% in the case of a circular cell geometry while it is 0.4-40% in the case of strip-shaped geometry, oscillation can be avoided effectively.

公开(公告)号：JPH0842823A

公开(公告)日：1996-02-16

申请号：JP17114995

申请日：1995-07-06

Applicant: ABB MANAGEMENT AG

Inventor： RORUFU ARUTOHAUSU ,  TEINOOMARUTEIN MARURINGU

IPC: F23D11/12 ,  F23D11/10 ,  F23D17/00 ,  F23D23/00 ,  F23R3/28

Abstract: PROBLEM TO BE SOLVED: To realize specified fuel distribution to individual burners easily while facilitating remodeling of existing pilot stage by providing variable choke points in individual liquid fuel feed passages or gas feed passages. SOLUTION: When a fuel lance 3 is drawn out from turbine casing, a choke ring 16 provided in a projecting air supply pipe 6 can be accessed and machined freely from the outside. Consequently, outside diameter of the choke ring 16 can be decreased and turning can be carried out little by little. Fuel distribution can thereby be regulated gradually and accurately. When choking action of a choke point 20 provided at liquid fuel supply section is varied, the fuel lance 3 is drawn out from the casing and a pin 11 is removed from a pipe part 18. A pipe part 22 is now accessible freely from the inside and can be shortened by turning. The pin 11 is then inserted in order to inspect the fuel lance 3 during operation and the machining is repeated until a desired uniform fuel distribution is attained.

公开(公告)号：JPH07293885A

公开(公告)日：1995-11-10

申请号：JP9728295

申请日：1995-04-21

Applicant: ABB MANAGEMENT AG

Inventor： MERUHI FUISHIYAA

IPC: F02C7/24 ,  F23M20/00 ,  F23M99/00 ,  F23R3/00 ,  F23R3/18 ,  F23M13/00

Abstract: PURPOSE: To ensure invariant damping efficiency even under alternating operational conditions. CONSTITUTION: An apparatus for damping thermoacoustic vibration in a combustion chamber 7, especially of a gas turbine, comprises a Helmholtz resonator 1 having a resonator space 2 and a connecting tube 3 by means of which the resonator space 2 is connected to the combustion chamber 7 wherein the Helmholtz resonator 1 comprises a first means for controlling the resonator frequency as a function of the frequency of the combustion chamber vibration.

公开(公告)号：JPH07280268A

公开(公告)日：1995-10-27

申请号：JP7796595

申请日：1995-04-03

Applicant: ABB MANAGEMENT AG

Inventor： RORUFU ARUTOHAUSU ,  YAAKOPU KERAA

IPC: F23R3/12 ,  F23C9/00 ,  F23D17/00 ,  F23R3/28 ,  F23R3/30 ,  F23R3/54

Abstract: PURPOSE: To provide means for operating a combustor in the vicinity of flame extinguishing limit as lean as possible, i.e., in a range actually generating no NOx. CONSTITUTION: There is provided at least one jet injector 53 opening into a dome 51 and of which the central nozzle 54 is connected to a combustion chamber 58 via an orifice 55 in a front plate 52 and of which an annular space 56 surrounding the central nozzle 54 is loaded with a propellant.

公开(公告)号：JPH07203669A

公开(公告)日：1995-08-04

申请号：JP31793794

申请日：1994-12-21

Applicant: ABB MANAGEMENT AG

Inventor： KONRAATO BERIGAA ,  HORUSHIYUTO GURIYUUNIHI ,  HERUBERUTO SHIYUTENMURAA ,  YOHANESU BUERUNINGAA

IPC: H02M7/04 ,  H02M7/00 ,  H02M1/00

Abstract: PURPOSE: To obtain a converter circuit device with a low inductance by arranging a branch module in a phase module, so that a commutation circuit formed by the branch module has a small circuit region. CONSTITUTION: A single-phase module 1 contains two branch modules(BM) 2.1 and 2.2. BM 2.1 contains at least one of switch modules(SM) 3. The SM 3 has at least one power semiconductor switch 7 with a related network for a free wheel 8, an electrical circuit 9, or a current-limiting circuit 10. A commutation circuit is formed by a DC middle circuit, a positive connection part 4, a negative connection part 5, and BM1.2 and 2.2. In this case, the inductance of the commutation circuit is minimized. Specifically, at least BM2.1 is arranged in parallel with a main direction 2.1 along a connection line which is extended form the positive or negative connection part to a load connection part 6. It has at the most 500 nH and generates a switch that contributes to the floating inductance of a phase module.

公开(公告)号：JPH07170691A

公开(公告)日：1995-07-04

申请号：JP21755494

申请日：1994-09-12

Applicant: ABB MANAGEMENT AG

Inventor： HANSU TSUINMAAMAN

IPC: H02K9/02 ,  H02K9/04 ,  H02K9/06 ,  H02K9/26 ,  H02K19/00

Abstract: PURPOSE: To provide a method and equipment for cooling an air-cooled rotating electrical machine having an open cooling circuit at a minimum cost. CONSTITUTION: A space 21 formed at each end of a machine is divided by a first inner casing 3, and practically a first space 31 formed by an outer casing 2 and the first inner casing 3 directly supplies refiltered cooled air to a rotor 11, bypassing a fan 15 and a second space 21 formed by the first inner casing and the second inner casing 4 supplies only the prefiltered cooled air. There is a means 36 for separating a flow-out chamber 23 of the fan from a rotor space 37.

公开(公告)号：JPH07170664A

公开(公告)日：1995-07-04

申请号：JP18846994

申请日：1994-08-10

Applicant: ABB MANAGEMENT AG

Inventor： HANSUPEETAA EBISHIYAA ,  ROGEERU MATEISU

IPC: H02J3/16 ,  G05F1/70 ,  H02J3/18

Abstract: PURPOSE: To stabilize a power supply or power circuit network with respect to changes in reactive load of electric equipment or variable reactive load facilities by compensating for a change in reactor power according to the total current intensity, including the current in a reactive power compensator, in addition to the current in at least one of the electric equipment or variable reactive load facilities. CONSTITUTION: In order to stabilize a power supply device or power circuit network 1 with respect to changes in reactive load of at least one of electric equipment or variable reactive load facilities 8, the current intensity is adjusted to a specified current target value isoll or a reactive power target value Qsoll8 by a control signal or adjustment signal αist . In this case, a change in reactive power generated in at least one electric facility is compensated for according to the adjustment signal αist and according to a measured current signal iist or the current target value isoll of the facility 8. Furthermore, the change in reactive power is compensated for according to the total current intensity i33 , including the current in at least one reactive power compensating equipment 4, 4' other than the current in at least one facility 8.

公开(公告)号：JPH07169552A

公开(公告)日：1995-07-04

申请号：JP21007094

申请日：1994-09-02

Applicant: ABB MANAGEMENT AG

Inventor： BUARUTAA SHIYUMITSUTO ,  KURISUTOFU SHIYUPUBATSUHA

IPC: H01T1/16 ,  H01C7/12 ,  H01T4/02 ,  H01T4/06 ,  H02H9/04

Abstract: PURPOSE: To simplify the structure, to lower the cost, and to provide high operating reliability by integrally manufacturing a frame of the insulating material, and providing a means for maintaining the contact force, between a contact and a block made of varistors. CONSTITUTION: A block 9 made of the varistor material is pinched between two pressure plates 8. A groove disc 10 is put between the pressure plates 8 and following blocks 9. The groove disc 10 is provided with a center hole. Multiple grooves surrounds the center hole in the concentrical condition. This groove disc 10 is made of aluminum, which is weakly annealed. Contact force to be applied to a device by a bolt 4 with screw deforms corner of the groove disc 10 in response to place, and a specified point contact is generated, and especially excellent transmission of current to an overvoltage arrester is secured.

公开(公告)号：JPH07167092A

公开(公告)日：1995-07-04

申请号：JP26723494

申请日：1994-10-31

Applicant: ABB MANAGEMENT AG

Inventor： EDOUARUTO BURIYUUBUIRAA ,  PAURU MARUROFU

IPC: F04D29/08 ,  F01D9/06 ,  F04D29/10

Abstract: PURPOSE: To surely prevent dirt from entering a compressor passage via sealed air by designing a compressor to take the sealed air out of an inflow chamber behind an inlet filter and in front of inflow guide vanes. CONSTITUTION: This compressor for a gas turbine has rotary vanes 7 fixed around a rotor shaft 10 which is rotatable about an axis 18, and a compressor casing 2 is provided to surround the rotor shaft 10 within the region of the rotary vanes 7. An inflow casing 9 provided with an outer shell 3, an inner shell 16, and an inflow chamber 4 is provided to surround the rotor shaft 10 on the inflow side of the compressor 1. In this case, a seal casing 11 is provided at the end of the inner shell 11 while facing the rotary vanes 7 to thereby seal an inlet passage 27 against ambient air while the inlet passage 27 is positioned adjacent to the circumference of the rotor shaft 10. A sealing air chamber 12 provided in the seal casing 11 is communicated with the inflow chamber 4 via a sealing air passage 15.

公开(公告)号：JPH07150977A

公开(公告)日：1995-06-13

申请号：JP21266194

申请日：1994-09-06

Applicant: ABB MANAGEMENT AG

Inventor： RORUFU ARUTOHAUSU ,  YOUUPIN CHIYOU ,  HANSU URURITSUHI FURUUCHI ,  KURISUTEIAN GENEETO ,  PIITAA KANBAA ,  ANDERUSU RINDOBUARU ,  PEETAA RUFURI ,  TOOMASU ZATSUTERUMAIYAA ,  PEETAA ZENIOORU

IPC: F02C9/00 ,  F02C6/00 ,  F02C6/02 ,  F02C9/28 ,  F02C9/34

Abstract: PURPOSE: To perform a partial load operation by reducing a fuel quantity in a second combustion chamber to zero, maintaining the outlet temperature of a first turbine almost constant, and maintaining a fuel quantity in a first combustion chamber almost constant during the reduction of the fuel quantity in the second combustion chamber so as to maintain the inlet temperature of the first turbine almost constant. CONSTITUTION: A gas turbine compresses sucked air 2 in a compressor 1, and the compressed air 3 flows into a high-pressure combustion chamber 4. A high-pressure turbine 5 is operated downstream of the high-pressure combustion chamber 4, heated gas 6 is partially expanded and exhaust gas 7 is discharged. The exhaust gas ignites fuel in a low-pressure combustion chamber 8. At this time, a fuel quantity 9 in the low-pressure combustion chamber 8 is reduced to zero, and the outlet temperature of the high-pressure turbine 5 is maintained approximately constant. In addition, a fuel quantity 4a in the high-pressure combustion chamber 4 is maintained approximately constant during the reduction of the fuel quantity 9 in the low-pressure combustion chamber 8, and the inlet temperature of the high-pressure turbine 5 is maintained constant. Thus, the low-pressure combustion chamber 8 performs a partial load operation up to 40% of the high-pressure combustion chamber 4.