公开(公告)号：JPH08200005A

公开(公告)日：1996-08-06

申请号：JP26581395

申请日：1995-10-13

Applicant: ABB MANAGEMENT AG

Inventor： UIIRIEN NGUIEN ,  ERI BUIIRANTO

IPC: F01D5/06 ,  F01D5/30

Abstract: PROBLEM TO BE SOLVED: To attach a blade in a blade groove of a rotor and form the blade groove into a satisfactory shape, without damaging the groove bottom of the blade groove and the blade. SOLUTION: A blade 2 of a bladed rotor 1 of an axial-flow turbomachine has a shoulder part 6 between a blade 2a and blade roots 2b fixed in a plurality of annular blade grooves 11. The profile of the cross section of the blade groove is shaped symmetrically with respect to its symmetrical plane by a plurality of radii R1 to R4 which follows sequentially. The each radius closer to the symmetrical plane of the two radii which follow sequentially is larger than the radius which is more remote from the symmetrical plane, and two circular arcs following sequentially from among circular arcs 21 to 24 formed by these radii have a common tangent T at their contact points.

公开(公告)号：JPH08176767A

公开(公告)日：1996-07-09

申请号：JP20720195

申请日：1995-08-14

Applicant: ABB MANAGEMENT AG

Inventor： KURAUSU GERUDESU

IPC: F01D5/12 ,  C22F1/00 ,  C22F1/18 ,  C23C8/06 ,  F01D5/28

公开(公告)号：JPH08116677A

公开(公告)日：1996-05-07

申请号：JP22565095

申请日：1995-09-04

Applicant: ABB MANAGEMENT AG

Inventor： PEETAA ETSUTAA

IPC: H01L23/62 ,  H01L25/065 ,  H02M7/00 ,  H02P27/06 ,  H02M7/48 ,  H02M1/00 ,  H02P7/63

Abstract: PROBLEM TO BE SOLVED: To protect the operation of an entire device from stoppages, even if one or more semiconductor switch chips fail by a method, wherein the connection wire of the switch chip causing a short-circuit is intentionally cut off. SOLUTION: Respective phases 6.1-6.2 of a power converting circuit 1 have at least two switches 2 respectively, and each switch 2 is composed of a switch module 14. If it is detected that one module has a defect, all the switch modules 14 of the respective phases 6.1-6.3 are turned off. Then, the module 14 of, for instance, the phase 6.1 connected to the terminal 7 of a DC voltage source 5 is turned on. It the short-circuit exists in the module of the same phase connected to a terminal 8, all the currents is applied to a connection wire 3 of the defective chip, and the connection wire 3 is cut off. As a result, the defective chip 4 is isolated electrically from the other parts of the module.

公开(公告)号：JPH08100603A

公开(公告)日：1996-04-16

申请号：JP25134495

申请日：1995-09-28

Applicant: ABB MANAGEMENT AG

Inventor： UIIRIIMU NGUIEN

IPC: F01D5/30

Abstract: PROBLEM TO BE SOLVED: To prolong the useful life longevity of bladed rotor components by setting a first radius of curvature smaller than a second radius of curvature both adjacent to a supporting surface and setting at a specific value the opening angle between the supporting surface and a tangent to a circle arc described by the first radius of curvature at each end point of the supporting surface. SOLUTION: A supporting surface F produced during rotation of a drum rotor 1 because of the centrifugal acceleration of moving blades is interposed between rotationally symmetric indentations 21 and 10 of the respective drum rotor 1 and moving blades. The supporting surface F is described by end points A and B and an inclination 12 relative to a line 6 parallel to the longitudinal axis of the moving blades. A straight line T passing the end point A of the supporting surface F meets the supporting surface F at an opening angle W of at least forty degrees. The straight line T tangentially adjoins an A-C circle arc 22 with a first radius of curvature R1 and with a center point located on a perpendicular to the straight line T. The other end point C of the A-C circle arc 22 connects to a C-D straight line 23 that is tangential to it and at the same time tangential to a D-E circle arc 24 of a second radius of curvature R2. The second radius of curvature R2 is larger than the first radius of curvature R1.

公开(公告)号：JPH0874795A

公开(公告)日：1996-03-19

申请号：JP22935495

申请日：1995-09-06

Applicant: ABB MANAGEMENT AG

Inventor： YOOZEFU BETEIHI ,  GIYUBUEN MEEMETO KUTAI

IPC: F04D29/60 ,  F01D25/28 ,  F02B67/10 ,  F02C7/20

Abstract: PROBLEM TO BE SOLVED: To improve the operational certainty of a turbocharger, and provide many different fixing forms. SOLUTION: At least one central, positive-engagingly locking connecting member 8, and at least two outer supporting members 9, which are designed to provide positive-engagingly locking in the direction offset by 90 deg. to the connecting member 8, are arranged on a mounting foot 5 connected to a turbocharger casing 1, and a counter-member 15 which corresponds to the casing 1 to be positive-engagingly locked to it, is arranged. The mounting foot 5 is provided with a base board 6, and the connecting member 8 and the supporting members 9 are arranged on the base board 6. The connecting member 8 is provided with a lateral groove to which the turbocharger is positive-engagingly locked in the longitudinal direction 7, and the outer supporting members 9 are arranged perpendicular to the longitudinal direction 7 of the turbocharger, on both sides of the base board 6. Further, the counter-member corresponding to the connecting member 8 is formed on the casing 1 as a fixed rib having a receiving area.

公开(公告)号：JPH0861095A

公开(公告)日：1996-03-05

申请号：JP20887395

申请日：1995-08-16

Applicant: ABB MANAGEMENT AG

Inventor： KURAUSU HORINGAA ,  GERUHARUTO MIYURAA

IPC: F02C7/228 ,  F02C9/34 ,  F02C9/46 ,  F23R3/28 ,  F23R3/34

Abstract: PROBLEM TO BE SOLVED: To dispense with replacement of an existing control valve that requires a long time and high cost in a method for controlling the rotational speed of a gas turbine during load disconnection. SOLUTION: Some of premixing burners are used as idling premixing burners 11a, and the rest are operated only as main burners, during load disconnection, the main burners are shut off by means of the burner control valve 6, and the idling premixing burners 11a are supplied with fuel via a regulated bypass line 3.

公开(公告)号：JPH0842357A

公开(公告)日：1996-02-13

申请号：JP10758595

申请日：1995-05-01

Applicant: ABB MANAGEMENT AG

Inventor： HANSU URURITSUHI FURUTSUCHI ,  HANSU BUETOSHIYUTAIN

IPC: F01K21/04 ,  F02C3/30 ,  F02C3/32 ,  F02C7/22 ,  F23R3/28

Abstract: PURPOSE: To realize the combustion less in NOx without damaging the efficiency by providing an outlet diffuser of a compressor with a first injection system, and providing a second injection system on the upstream side of a burner of a combustor in a power plant provided with a turbine. CONSTITUTION: In a power plant comprising a compressor 2, a combustor, and at least one turbine, an injector 5a is provided immediately on the downstream side of the compressor 2, i.e., on an outlet diffuser 4 of the compressor, and the pre-compressed air from the compressor 2 is further compressed by injecting a high-pressure steam 10 generated in a waste heat steam generator 13 from a drive nozzle of the injector 5a. A part of the high-pressure steam 10 to be supplied to the injector 5a is branched and supplied to the drive nozzle of another injector 5b, and the high-pressure steam is injected in a burner 100 of a combustor 6 from the injector 5b together with a liquid fuel 112 to burn the mixture to an optimum in the combustor 6.

公开(公告)号：JPH0828289A

公开(公告)日：1996-01-30

申请号：JP26871494

申请日：1994-11-01

Applicant: ABB MANAGEMENT AG

Inventor： GERUHARUTO KURAIZERUMAIAA ,  MARUKUSU ROOSU ,  BUIRUHERUMU ZEBARUTO ,  RAIMUNTO BUOORURAPU

IPC: F02B39/00 ,  F01D25/16 ,  F02B39/14 ,  F16C33/34 ,  F16C33/56 ,  F16C33/66 ,  F16C35/077

Abstract: PURPOSE: To reduce the dynamic cage stress by setting the ratio of the diameter of a cylindrical roller to the diameter of the bearing pitch circle of a cylindrical roller bearing to be a specific small value. CONSTITUTION: An inner ring 11 of a cylindrical roller bearing 10 is coupled with a turbocharger shaft 15 through an inner bearing bush 13. An outer ring 12 of the cylindrical roller bearing 10 is supported in a soft sheet packet 16 through an outer bearing bush 14. A ratio of the diameter d of the cylindrical roller to the diameter D of the bearing pitch circle is set to be 0.2. The size of a rolling element comprising a roller becomes relatively small, and the size of the inner ring and the outer ring of the bearing can be relatively larger than the conventional dimension of the inner and outer bearing bushes 13, 14. Since the rolling element is relatively small, the mass is small, and thus, the cage stress can be reduced, and the weight of the structure of a cage can be reduced.

公开(公告)号：JPH07335864A

公开(公告)日：1995-12-22

申请号：JP12667295

申请日：1995-05-25

Applicant: ABB MANAGEMENT AG

Inventor： PEETAA SHIYUTORAITO

IPC: H01L29/08 ,  H01L29/74 ,  H01L29/744

Abstract: PURPOSE: To realize an adequate voltage sustaining capability even at a high temp. by providing a p-type barrier layer having gaps which an n-type base layer contacts directly or through an anode short-circuit by an anode. CONSTITUTION: A semiconductor substrate between an anode 1 and cathode 2 has an n-type emitter layer 4, p-type base layer 5, n-type base layer 6 and p-type emitter layer 7. The emitter layer 7 is bored by anode short-circuit regions 8 which short-circuit the base layer 6 with the anode 1. Between the anode short circuit regions 8 and the p-types emitter layer 7, a p-type barrier layer 9 is disposed and has gaps 12 which the base layer 6 contacts directly or through the regions 8 by the anode 1. This realizes adequate voltage sustaining capability even at high temps.

公开(公告)号：JPH07318018A

公开(公告)日：1995-12-08

申请号：JP11620695

申请日：1995-05-15

Applicant: ABB MANAGEMENT AG

Inventor： KURAUSU DEBERINKU

IPC: F23D14/02 ,  F23D14/22 ,  F23D14/34 ,  F23D14/74 ,  F23D14/82 ,  F23R3/24

Abstract: PURPOSE: To stabilize flame without forming any violent backflow zone on the axis and without requiring any flame holder by introducing fuel and combustion air at the head side of a mixing section, increasing the current velocity of the mixture gas and forming a hot wall boundary layer and a core of cold gas flow inside the combustion section. CONSTITUTION: A fuel 5 and combustion air 4 are introduced at the head side of a mixing section 3 to form a mixture and current velocity of the mixture 6 is increased in the mixing section 3 in order to prevent self-ignition and flashback from an ignition zone 9. Furthermore, a hot wall boundary layer and a core of cold gas flow are formed inside the combustion section 13 in order to form a conical reaction zone 11 in the flow direction toward the axis 12 of symmetry of a premixing burner 1. Since fuel mixing takes place at a part of highest current velocity in a passage forming the premixing burner 1, quick mixture of fuel 5 and combustion air 4 is guaranteed.