公开(公告)号：US10343109B2

公开(公告)日：2019-07-09

申请号：US15224917

申请日：2016-08-01

Applicant: ALSTOM Technology Ltd

Inventor： Travis Dwight Reynolds ,  Dwight Goodman ,  Thomas Edwin Pearson ,  Dana Humphreys

IPC: B01D53/30 ,  B01D53/80 ,  F17D1/00 ,  B01D53/50 ,  B01D53/75 ,  F23J15/00

Abstract: A system for regulating an amount of fresh lime slurry introduced to a spray dry absorber. The control system includes a controller configured to receive input from a continuous emissions monitoring system (CEMS), a valve in communication with the controller and a spray dry absorber suction pump, the valve adapted to regulate an amount of fresh lime slurry provided to the spray dry absorber suction pump and a valve in communication with the controller and a pre-mix tank, the valve adapted to regulate an amount of fresh lime slurry provided to the pre-mix tank.

公开(公告)号：US10253654B2

公开(公告)日：2019-04-09

申请号：US14934306

申请日：2015-11-06

Applicant: ALSTOM Technology Ltd

Inventor： Erhard Liebig ,  Jean-Marie Gut ,  Hansjörg Klaiber ,  Martin Schoenenberger ,  Goran Hajko

IPC: F01K13/02 ,  F01K23/10 ,  F01D19/02 ,  F01D25/10

Abstract: The invention relates to a method for starting a steam turbine. The method involves pre-warming the steam turbine with a steam in which 65% of an energy used to pre-warming the steam turbine is derived from a latent heat energy of the steam.

公开(公告)号：US10236785B2

公开(公告)日：2019-03-19

申请号：US15035660

申请日：2014-11-07

Applicant: Alstom Technology Ltd.

Inventor： Colin Oates

IPC: H02M5/42 ,  H02M1/12 ,  H02J3/36 ,  H02J1/02

Abstract: This application relates to methods and apparatus for control apparatus of a voltage source converter for direct current transmission of electrical power over a transmission line. The control apparatus comprises regulation control for generating a regulation signal for the converter to regulate an electrical parameter of the voltage source converter, such as voltage or power, so as to regulate power transmission over the transmission line. The regulation signal is based on the difference between a measured value of said parameter and a reference value of said parameter, as may be supplied from a reference control block and may be derived from a demand signal indicating the voltage or power demand. The apparatus also includes damping control configured to generate a damping signal for modulating said regulation signal to reduce the effect of resonance within the bandwidth of control of the converter. The damping signal is generated as a function of a measured voltage or current of the transmission line and an impedance value for the transmission line. The damping signal may be high-pass filtered so as to have no substantial impact on steady state operation.

公开(公告)号：US10236736B2

公开(公告)日：2019-03-19

申请号：US14601294

申请日：2015-01-21

Applicant: ALSTOM Technology Ltd

Inventor： Bartolomeus Irwanto ,  Yvonne Riedling ,  Gunter Scherf

IPC: H02K3/16 ,  H02K1/26 ,  H02K3/51

Abstract: A damper finger segment is radially disposed between a retaining ring and a damper ring arrangement at a rotor end of a generator arrangement, in particular of a high power turbogenerator, having a multitude of plate-like finger elements with a longitudinal extension and arranged parallel to each other. Each neighboring pair of finger elements encloses a gap and all finger elements are joined at one end of each finger element by a band-like strip section having a longitudinal extension being oriented orthogonally to the longitudinal extension of the finger elements. At least one slot is provided in each plate-like finger element and/or in the band-like strip section. The at least one slot has a slot axis oriented parallel to the longitudinal extension of the plate-like finger elements.

公开(公告)号：US10196939B2

公开(公告)日：2019-02-05

申请号：US14807216

申请日：2015-07-23

Applicant: ALSTOM Technology Ltd

Inventor： Volker Schüle ,  Stephan Hellweg ,  Reinhard Leithner ,  Niels Brinkmeier

IPC: F01K7/34 ,  F01K7/24 ,  F22B35/10 ,  F22D1/32 ,  F01K9/02 ,  F22B29/06

Abstract: The once-through boiler includes a water supply and at least an economizer, an evaporator superheater. No valves are provided between the economizer, the evaporator and the superheater. The high-pressure turbine includes a control valve. The method for low load operation of a power plant with a once-through boiler and a high pressure turbine includes providing a parameter indicative of the stable operation of the once-through boiler in once-through operation, and on the basis of this parameter adjusting the control valve in order to regulate the pressure within the economizer and evaporator and/or adjusting the temperature of the water supplied to the economizer.

公开(公告)号：US10041368B2

公开(公告)日：2018-08-07

申请号：US14881484

申请日：2015-10-13

Applicant: ALSTOM Technology Ltd

Inventor： Christopher John Homer

IPC: F01D11/10 ,  F01D11/08 ,  F01D5/22 ,  F01D25/24 ,  F01D1/04

Abstract: The invention relates to a turbine in which a bypass-passage extends through a base member of a stationary vane to join seal cavities of adjacent rotating blade rows so that seal flow passing between a casing and shrouds of the rotating blades at least partially bypasses the turbine main flow passage.

公开(公告)号：US10014740B2

公开(公告)日：2018-07-03

申请号：US14715921

申请日：2015-05-19

Applicant: ALSTOM Technology Ltd

Inventor： Janusz Bialik ,  Laurent Didier Jean Clemence ,  Duncan Madle ,  Jean-Noel Simon ,  Cristian Ana

IPC: H02K3/22 ,  H02K9/00 ,  H02K15/04 ,  B23K1/00 ,  H02K15/00

CPC classification number: H02K3/22 ,  B23K1/0016 ,  H02K9/005 ,  H02K15/0093 ,  H02K15/04

Abstract: The present disclosure relates to a chamber for housing strands of a stator bar for electric machines.The problem to provide a reliable chamber for a stator bar of an electric machine is solved with a stator bar chamber engaging a stator bar in an electric machine. The chamber includes a number of hollow conductors in a first straight part of the chamber, a number of hollow conductors in a second tapered part, and a number of hollow conductors and adjacent solid conductors in a third straight part. The first part of the chamber is closed with a ring mounted at the edge of the first part and a nipple adapted to the ring.

公开(公告)号：US09997312B2

公开(公告)日：2018-06-12

申请号：US15326917

申请日：2015-07-17

Applicant: Alstom Technology Ltd.

Inventor： Joël Ozil ,  René Rosset ,  Matthieu Barre ,  Victor Hermosillo

IPC: H01H33/662 ,  H01H33/56 ,  H01H33/666

CPC classification number: H01H33/662 ,  H01H33/565 ,  H01H33/66 ,  H01H33/666 ,  H01H2033/6623 ,  H01H2033/6665 ,  H01H2033/6667

Abstract: The invention relates to a circuit breaker (10) for an electricity transport installation, the circuit breaker comprising a tank (12), a vacuum bottle (20) that has a stationary contact (24), a movable contact (26), and sealing means (40), a casing (30) that is arranged inside the tank (12), that electrically connects the movable contact (26) to an electrical conductor (18), and that co-operates with an outside wall of the vacuum bottle (20) to define a volume (42) that is taken to a pressure close to atmospheric pressure, and feeder means for feeding the inside volume (42) of the casing (30), which feeder means pass through the inside volume (14) of the tank (12), the circuit breaker being characterized in that the feeder means for feeding the inside volume (42) of the casing (30) consist in a tubular element (38, 54, 56) made of insulating material.

公开(公告)号：US09972997B2

公开(公告)日：2018-05-15

申请号：US14423067

申请日：2013-07-02

Applicant: ALSTOM Technology Ltd

Inventor： Colin Charnock Davidson

IPC: H02H3/08 ,  H02H3/087 ,  H02H9/02 ,  H02H3/10 ,  H02H9/04 ,  H03K17/0814 ,  H03K17/082 ,  H03K17/12 ,  H03K17/30 ,  H03K17/73

CPC classification number: H02H9/02 ,  H02H3/087 ,  H02H9/04 ,  H02H9/043 ,  H03K17/08148 ,  H03K17/0828 ,  H03K17/127 ,  H03K17/305 ,  H03K17/73

Abstract: A switching device (28) comprising a primary switching block (30) including at least one semiconductor switch (34); and a switching control unit (32) to control the switching of the or each semiconductor switch (34). The switching device further includes a crowbar circuit (46) comprising a crowbar switch (56) switchable to selectively allow current to flow through the crowbar switch (56) in order to bypass the or each switching module; and a secondary switching block including a switching element (58) connected across a control electrode and a cathode of the crowbar switch (56). The switching element (58) is in communication with the switching control unit (32) to receive, in use, a control signal (66) generated by the switching control unit (32) when the primary switching block (30) is operating within predefined operating parameters.

公开(公告)号：US09926222B2

公开(公告)日：2018-03-27

申请号：US15127228

申请日：2015-03-10

Applicant: ALSTOM TECHNOLOGY LTD

Inventor： Thomas Hillmer ,  Paul Howard ,  Iwona Szkoda-Giannaki ,  Thomas Baumann

IPC: C09K5/14 ,  C03C10/00 ,  C03C4/16 ,  C03B32/02 ,  C03B37/005 ,  H01B3/08 ,  H01B3/00 ,  H02K3/30

CPC classification number: C03C10/0009 ,  C03B32/02 ,  C03B37/005 ,  C03C3/097 ,  C03C4/16 ,  C03C12/00 ,  C03C2204/00 ,  C09K5/14 ,  H01B3/002 ,  H01B3/08 ,  H02K3/30 ,  H02K3/345

Abstract: The present disclosure relates to an insulation material for a conductor bar of an electric machine. An object of the invention is to provide for an alternative insulation material in the field of electric machines. The object is solved by an insulation material for a conductor bar for an electric machine comprising glass-ceramic flakes made from a heat treated silica glass precursor in the shape of flakes. Further disclosed are a corresponding method and the use of glass-ceramic flakes as an insulation material for a conductor bar of an electric machine.