Christopher V Holt

Address:

9844 Cypresswood Dr, Houston, TX 77070

VIN:

1ZVBP8AM6C5260427

Make:

FORD

Model:

MUSTANG

Year:

2012

US Patent:

8381617, Feb 26, 2013

Filed:

Feb 2, 2007

Appl. No.:

12/162269

Inventors:

Christopher G. Holt - Katy TX, US
William L. Martin - Houston TX, US

Assignee:

ExxonMobil Upstream Research Company - Houston TX

International Classification:

F16H 37/06
F16D 33/00

US Classification:

74665R, 60330, 60335

Abstract:

A compressor starting torque converter method and apparatus for high power rotating equipment strings includes a compressor starting torque converter (CSTC) () and gearing to make the input and output speed conform to the speed and power requirements of the at least one compressor () at the end of the string. The string also includes a prime mover (), either a motor or gas turbine with a starter motor. The CSTC is driven by a prime mover that has been geared down (via ) to an appropriate speed for efficient power transfer, followed by a gear increasing unit () to allow the output of the CSTC to be increased to conform to the necessary requirements of a high speed compressor. The gearing can be two separate units with their own housings, or incorporated in a single housing with the CSTC. The CSTC may be a CSTC used in pressurized starts high compressor load strings for LNG refrigeration service.

US Patent:

8517693, Aug 27, 2013

Filed:

Nov 8, 2006

Appl. No.:

12/085047

Inventors:

William L. Martin - Houston TX, US
Christopher G. Holt - Katy TX, US

Assignee:

ExxonMobil Upstream Research Company - Houston TX

International Classification:

F04B 49/00

US Classification:

417223, 417319, 417429, 192 328, 60335

Abstract:

Starter arrangement for high power rotating equipment strings with multiple compressors driven by a single turbine or motor includes multiple variable fluid drive torque converters (CSTCs) to start the compressors in a pressurized start. The string can use a single CSTC for each compressor or a single CSTC for more than one compressor with at least two CSTCs for a given string. The starting procedure is sequential. After the turbine or motor is started and brought up to speed, successive CSTCs are operated from zero to lock-up speed sequentially to start each compressor or group of compressors in turn. In order to cool the working fluid of the CSTCs, a single heat exchanger is provided and the working fluid of each CSTC in turn is circulated through the heat exchanger as they are sequentially started. At lock-up speed, the CSTC is locked up, the working fluid is drained, and the working fluid of the active CSTC is isolated from the heat exchanger and the next succeeding CSTC in the start sequence is in turn, filled with the working fluid and connected to the heat exchanger. At full start, with all compressors operating at full speed, no working fluid is present in the CSTCs, and no working fluid is circulated through the heat exchangers from the locked-up CSTCs.