Vinh Tuan Do

US Patent:

7380452, Jun 3, 2008

Filed:

Feb 28, 2007

Appl. No.:

11/680017

Inventors:

Hamid Reza Sarshar - The Woodlands TX, US
Vinh K. Do - Houston TX, US
Simone Pratesi - Vicchio, IT
Nicola Campo - Florence, IT
Jeffrey Raynal - Houston TX, US

Assignee:

Nuovo Pignone Holdings, S.p.A. - Florence

International Classification:

G01M 19/00

US Classification:

73168

Abstract:

A method of determining fuse parameters in a reciprocating gas compressor ensures a safe failure upon exceeding an overload limit. Stresses and bolted joint behavior for critical components in compressor running gear are evaluated using a finite element analysis. Capabilities of the critical components during an overload event are evaluated using a propagation and variances tool. The capabilities of the critical components are compared against overload conditions. At least one of an optimal fuse location and a fuse geometry are determined according to the comparison to establish a safe failure point upon exceeding the overload limit. With a mechanical fuse defining a failure point, critical compressor components can be protected from damage, and personnel can be protected from risk of a gas leakage.

US Patent:

7406864, Aug 5, 2008

Filed:

Feb 28, 2007

Appl. No.:

11/680028

Inventors:

Hamid Reza Sarshar - The Woodlands TX, US
Vinh K. Do - Houston TX, US
Simone Pratesi - Vicchio, IT
Nicola Campo - Florence, IT
Jeffrey Raynal - Houston TX, US

Assignee:

Nuovo Pignone Holdings, S.p.A. - Florence

International Classification:

G01M 19/00

US Classification:

73168

Abstract:

Mechanical overloads in a reciprocating gas compressor can cause irreparable damage to compressor components if the source of the overloads is not repaired. A method of detecting mechanical overloads includes forming a mechanical fuse that is configured to strain under overload conditions, and observing a condition of the mechanical fuse. The condition of the mechanical fuse is indicative of whether the compressor experienced a mechanical overload. By simply observing the mechanical fuse, overload conditions can be checked during routine inspections and maintenance checks.

US Patent:

7913558, Mar 29, 2011

Filed:

Feb 28, 2007

Appl. No.:

11/680009

Inventors:

Hamid Reza Sarshar - The Woodlands TX, US
Vinh K. Do - Houston TX, US
Simone Pratesi - Vicchio, IT
Nicola Campo - Florence, IT
Jeffrey Raynal - Houston TX, US

Assignee:

Nuovo Pignone Holdings, S.p.A. - Florence

International Classification:

G01M 19/00

US Classification:

73168

Abstract:

Mechanical overloads in a reciprocating gas compressor can cause irreparable damage to compressor components if the source of the overloads is not repaired. A method of detecting mechanical overloads includes applying an overload indicator across an interface between components in the compressor, and observing a mechanical condition of the overload indicator. The mechanical condition of the overload indicator is indicative of whether the compressor experienced a mechanical overload. By placing the indicator in an appropriate location in the compressor, overload conditions can be checked during routine inspections and maintenance checks.

US Patent:

8523503, Sep 3, 2013

Filed:

Jul 30, 2010

Appl. No.:

12/847254

Inventors:

Vinh Do - Houston TX, US
Jeffrey Raynal - Houston TX, US
Mayur Mansukh - Houston TX, US

Assignee:

Nuovo Pignone, S.p.A. - Florence

International Classification:

F16B 39/34

US Classification:

411303, 411302, 411306, 411369, 411432, 411542

Abstract:

A threaded joint includes a flange, a nut and a flexible seal. The flange, the nut and the flexible seal have threads respective inner surfaces, the threads having shapes complementary to threads on an outer surface of a stem. The flange is configured to allow the stem to move by rotation through the flange. The nut and the flexible seal are configured to move by rotation relative to the stem. The flange has a counter bore and the nut has a groove. The flexible seal has a first portion configured to fill the counter bore in the flange, and a second portion configured to fill the groove of the nut.

US Patent:

20120051949, Mar 1, 2012

Filed:

Aug 31, 2010

Appl. No.:

12/872194

Inventors:

Vinh DO - Houston TX, US
Jeffrey RAYNAL - Houston TX, US
Jason Andrew HELTON - Oshkosh WI, US
Carlos TREVINO - Houston TX, US

Assignee:

NUOVO PIGNONE S.P.A. - Florence

International Classification:

F04B 53/18
F16B 1/00
F04B 1/04

US Classification:

417273, 403 37

Abstract:

Method and device for lubricating a connection. A housing is configured to house a crankshaft adapter that connects an oil pump to a compressor. The housing includes a shell forming a round cavity configured to receive the crankshaft adapter; an oil feed conduit configured to enter through the shell into the round cavity and to deliver oil; a first drain conduit, opposite to the oil feed conduit, and configured to enter through the shell into the round cavity; a plug provided in the first drain conduit; and a second drain conduit configured to enter through the shell into the round cavity. The second drain conduit is located between the oil feed conduit and the first drain conduit, substantially between 50 and 130 degrees relative to the first drain conduit on a periphery of the shell.