公开(公告)号：WO2009079085A2

公开(公告)日：2009-06-25

申请号：PCT/US2008080302

申请日：2008-10-17

Applicant: GEN ELECTRIC ,  ASOKAN THANGAVELU ,  CHOKSHI SETU ,  MONTASSER YUSEPH ,  POLIZZOTTI DAVID M ,  TAYALIA YATIN

Inventor： ASOKAN THANGAVELU ,  CHOKSHI SETU ,  MONTASSER YUSEPH ,  POLIZZOTTI DAVID M ,  TAYALIA YATIN

IPC: C02F1/48 ,  C02F1/46

CPC classification number: C02F1/48 ,  A61L2/02 ,  C02F1/32 ,  C02F1/44 ,  C02F1/4608 ,  C02F1/50 ,  C02F1/72 ,  C02F2001/46138 ,  C02F2103/023 ,  C02F2201/46125 ,  C02F2201/4615 ,  C02F2201/46175 ,  C02F2201/4619 ,  C02F2303/04 ,  C02F2303/06 ,  C02F2303/20

Abstract: A process to reduce or prevent biofouling, by destroying or deactivating microbiological content of feedwater, or other liquid, prior to its entrance into membranes or process equipment, such as heat transfer equipment. The process comprises the use of electrical discharge and/or electric fields to destroy microbes that result in the biofouling of surfaces. By destroying the microbiological content of the water the microbiology no longer is able to create a restricting biofilm upon or within said process equipment.

Abstract translation: 通过在进入膜或加工设备（例如传热设备）之前破坏或减少给水或其他液体的微生物含量来减少或防止生物污损的过程。 该方法包括使用放电和/或电场来破坏导致表面生物结垢的微生物。 通过破坏水的微生物含量，微生物学不再能够在所述工艺设备之上或之内产生限制性的生物膜。

公开(公告)号：BRPI0903311A2

公开(公告)日：2010-05-25

申请号：BRPI0903311

申请日：2009-09-15

Applicant: GEN ELECTRIC

Inventor： ASOKAN THANGAVELU ,  DESHMUKH RANJIT MANOHAR ,  GURURAJ RANGANATH ,  PANDEY KAMAL

IPC: H01H9/34 ,  H01H33/04

Abstract: A circuit breaker (20) having an arc quenching system is provided. The quenching system includes an ablative device (50) positioned within a chamber (44). An end of the ablative device (50) includes an opening (58) that receives a stationary contact (22). A movable contact arm (26) travels within a channel (54) between the closed position and an open position. When an abnormal operating condition is detected, the circuit breaker (20) trips causing the contact arm (26) to move. This generates a plasma arc that evaporates material from the ablative device (50). The evaporated material generates a pressurized gas that cools and quenches the plasma arc to improve the performance of the circuit breaker (20) during undesired operating conditions such as a short circuit.

公开(公告)号：DE102014102212A1

公开(公告)日：2014-08-28

申请号：DE102014102212

申请日：2014-02-20

Applicant: GEN ELECTRIC

Inventor： ASOKAN THANGAVELU ,  VALDES MARCELO ESTEBAN

IPC: H05H1/34 ,  H05H1/38

Abstract: Es wird eine Apparatur (210, 600) bereitgestellt. Die Apparatur (210, 600) enthält ein physikalisch mit einer ersten Hauptelektrode (202) verbundenes Plasmaerzeugungselement (212). Das Plasmaerzeugungselement (212) enthält wenigstens ein erstes offenes Ende (520) und ein zweites offenes Ende (522). Jedes offene Ende (520, 522) definiert eine Düse (216) dergestalt, dass das erste offene Ende (520) ein Ablativplasma auf eine zweite Hauptelektrode (204) richtet und das zweite offene Ende (522) das Ablativplasma auf eine dritte Hauptelektrode (206) richtet.

公开(公告)号：CA2630186A1

公开(公告)日：2008-11-14

申请号：CA2630186

申请日：2008-05-01

Applicant: GEN ELECTRIC

Inventor： RAO RAVINUTHALA RAMAKRISHNA ,  RAPOL UMAKANT DAMODAR ,  ASOKAN THANGAVELU ,  UNGARALA SATYANARAYANA MURTHY

IPC: G01R31/02 ,  H02H7/22

Abstract: A system (10) and method for identifying an arcing event (58) in electrica l distribution equipment (28). The system (10) includes memory (16) for storin g an arcing radio frequency characteristic indicative of an arcing event (58) generated in electrical distribution equipment (28) and a noise radio frequency characteristic indicative of background electrical noise and a sensor for detecting radio frequency signals (26) resulting from the arcing event (58) and propagating wirelessly from the electrical distribution equipment (28). The system (10) also includes a processor (14) for processing the radio frequency signals (26) detected by the sensor to extract radio frequency characteristics from the detected signals (52) and including a comparator for comparing the extracted frequency characteristics to the arcing radio frequency characteristic and the noise radio frequency characteristic stored in memory (16) to identify occurrence of an arcing event (58). The system (10) also includes a n arc alarm generator (19) for generating an arc fault signal (18) indicative of t he occurrence of the arcing event (58).

公开(公告)号：AU2009215226A1

公开(公告)日：2010-04-08

申请号：AU2009215226

申请日：2009-09-16

Applicant: GEN ELECTRIC

Inventor： PANDEY KAMAL ,  DESHMUKH RANJIT MANOHAR ,  ASOKAN THANGAVELU ,  GURURAJ RANGANATH

IPC: H01H33/72 ,  H01H9/30 ,  H01H9/34

Abstract: A circuit breaker (20) having an arc quenching system is provided. The quenching system includes an ablative device (50) positioned within a chamber (44). An end of the ablative device (50) includes an opening (58) that receives a stationary contact (22). A movable contact arm (26) travels within a channel (54) between the closed position and an open position. When an abnormal operating condition is detected, the circuit breaker (20) trips causing the contact arm (26) to move. This generates a plasma arc that evaporates material from the ablative device (50). The evaporated material generates a pressurized gas that cools and quenches the plasma arc to improve the performance of the circuit breaker (20) during undesired operating conditions such as a short circuit.

公开(公告)号：CA2678379A1

公开(公告)日：2010-03-19

申请号：CA2678379

申请日：2009-09-10

Applicant: GEN ELECTRIC

Inventor： ASOKAN THANGAVELU ,  DESHMUKH RANJIT MANOHAR ,  GURURAJ RANGANATH ,  PANDEY KAMAL

IPC: H01H73/18 ,  H01H77/02

Abstract: A circuit breaker (20) having an arc quenching system is provided. The quenching system includes an ablative device (50) positioned within a chamber (44). An end of the ablative device (50) includes an opening (58) that receives a stationary contact (22). A movable contact arm (26) travels within a channel (54) between the closed position and an open position. When an abnormal operating condition is detected, the circuit breaker (20) trips causing the contact arm (26) to move. This generates a plasma arc that evaporates material from the ablative device (50). The evaporated material generates a pressurized gas that cools and quenches the plasma arc to improve the performance of the circuit breaker (20) during undesired operating conditions such as a short circuit.

公开(公告)号：CA2625391A1

公开(公告)日：2008-09-30

申请号：CA2625391

申请日：2008-03-13

Applicant: GEN ELECTRIC

Inventor： ASOKAN THANGAVELU ,  BOHORI ADNAN KUTUBUDDIN ,  BOPPARAJU GOPICHAND

IPC: H01T2/02 ,  H01T15/00 ,  H02H1/04 ,  H02H7/22

Abstract: An arc crowbar with electrodes (34A, 34B, 34C) separated by a gap (35) in a protective case. Each electrode is connected to an electrically different conductor of a circuit. A sensor (42, 44) detects an arc flash condition on the circuit and signals a trigger circuit (52) to send an electrical pulse to an arc-triggering device (36) in the arc crowbar gap. The triggering device ionizes a portion of the gas between the electrodes, initiating a protective arc between the electrodes that absorbs energy from the power circuit and trips a breaker, eliminating the arc flash condition. The triggering device may be a plasma gun, especially one that injects plasma of an ablated material into the gap. The sensor may signal a circuit breaker (26) to open in the power circuit. Arc flash sensor types may include a differential current sensor and/or an optical sensor.

公开(公告)号：BR102012000820A2

公开(公告)日：2013-09-17

申请号：BR102012000820

申请日：2012-01-13

Applicant: GEN ELECTRIC

Inventor： ASOKAN THANGAVELU ,  GANIREDDY GOVARDHAN ,  PAPALLO THOMAS FREDERICK JR

IPC: H01H33/04 ,  H01H9/30

公开(公告)号：MX2008004185A

公开(公告)日：2009-02-27

申请号：MX2008004185

申请日：2008-03-27

Applicant: GEN ELECTRIC

Inventor： ASOKAN THANGAVELU ,  BOPPARAJU GOPICHAND ,  BOHORI ADNAN KUTUBUDDIN

IPC: H02H3/00 ,  H02H7/09

Abstract: Un limitador de arcos con electrodos (34A, 34B, 34C) separados por un hueco (35) en un recinto protector. Cada electrodo se conecta a un conductor eléctricamente diferente de un circuito. Un sensor (42, 44) detecta una condición de destello de arco en el circuito y envía señales a un circuito de disparo (52) para enviar una pulsación eléctrica a un aparato de disparo de arco (36) en el hueco del limitador de arco. El aparato de disparo ioniza una parte del gas entre los electrodos, iniciando un arco protector entre los electrodos que absorben energía del circuito de energía y desconecta un interruptor, eliminando la condición del destello de arco. El aparato de disparo puede ser una pistola de plasma, especialmente una que inyecta plasma de un material separado en el hueco. El sensor puede enviar una señal a un interruptor de circuito (26) para abrirse en el circuito de energía. Los tipos de sensor de destello de arco pueden incluir un sensor de corriente diferencial y/o un sensor óptico.

公开(公告)号：CA2628394A1

公开(公告)日：2008-10-16

申请号：CA2628394

申请日：2008-04-03

Applicant: GEN ELECTRIC

Inventor： BOHORI ADNAN KUTUBUDDIN ,  BOPPARAJU GOPICHAND ,  ASOKAN THANGAVELU

IPC: H05H1/48 ,  F03H1/00 ,  G10K15/06 ,  H01T2/00

Abstract: A plasma gun (20) with two gap electrodes on opposite ends of a chamber (28) of ablative material (26) such as an ablative polymer. The gun ejects an ablative plasma (34) at supersonic speed. A divergent nozzle (30) spreads the plasma jet to fill a gap (58) between electrodes of a main arc device (50), such as an arc crowbar (70) or a high voltage power switch. The plasma triggers the main arc device (50) by lowering the impedance of the main arc gap (58) via the ablative plasma (34) to provide a conductive path between the main electrodes. This provides faster triggering and requires less trigger energy than previous arc triggers. It also provides a more conductive initial main arc than previously possible. The initial properties of the main arc are controllable by the plasma properties, which are in turn controllable by design parameters of the ablative plasma gun.