US2014069744A1PendingUtilityA1

System and method for supplying lube oil to a gas turbine

38
Individually held — no corporate assignee on recordPriority: Sep 12, 2012Filed: Sep 12, 2012Published: Mar 13, 2014
Est. expirySep 12, 2032(~6.1 yrs left)· nominal 20-yr term from priority
Inventors:Alston Ilford ScipioBhalchandra Arun DesaiSanji Ekanayake
F01D 25/20
38
PatentIndex Score
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Cited by
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Claims

Abstract

A system for supplying lube oil to a gas turbine includes an auxiliary lube oil skid and an auxiliary lube oil pump. A first fluid connection to supply piping of a main lube oil system is downstream from the auxiliary lube oil pump. A second fluid connection to return piping of the main lube oil system is upstream from the auxiliary lube oil pump. A method for supplying lube oil to a gas turbine includes connecting an auxiliary lube oil pump to supply piping of a main lube oil system, connecting the auxiliary lube oil pump to return piping of the main lube oil system, and operating the auxiliary lube oil pump to supply lube oil to the supply piping.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A system for supplying lube oil to a gas turbine, comprising:
 a. an auxiliary lube oil skid;   b. an auxiliary lube oil pump on said auxiliary lube oil skid;   c. a first fluid connection to supply piping of a main lube oil system, wherein said first fluid connection is downstream from said auxiliary lube oil pump so that lube oil flows through said first fluid connection into the supply piping of the main lube oil system; and   d. a second fluid connection to return piping of the main lube oil system, wherein said second fluid connection is upstream from said auxiliary lube oil pump so that lube oil flows from the return piping of the main lube oil system through said second fluid connection.   
     
     
         2 . The system as in  claim 1 , wherein said auxiliary lube oil pump comprises a predetermined sized AC/DC motor. 
     
     
         3 . The system as in  claim 1 , further comprising a flow control valve on said auxiliary lube oil skid between said auxiliary lube oil pump and said first fluid connection. 
     
     
         4 . The system as in  claim 1 , further comprising a flow control valve on said auxiliary lube oil skid between said second fluid connection and said auxiliary lube oil pump. 
     
     
         5 . The system as in  claim 1 , further comprising an auxiliary heat exchanger on said auxiliary lube oil skid in fluid communication with said auxiliary lube oil pump. 
     
     
         6 . The system as in  claim 5 , further comprising an auxiliary cooling pump on said auxiliary lube oil skid in fluid communication with said auxiliary heat exchanger. 
     
     
         7 . The system as in  claim 1 , further comprising a control circuit operably connected to said auxiliary lube oil pump, wherein said control circuit prevents operation of said auxiliary lube oil pump unless a predetermined condition exists. 
     
     
         8 . A system for supplying lube oil to a gas turbine, comprising:
 a. a main lube oil pump;   b. supply piping downstream from said main lube oil pump, wherein said supply piping provides fluid communication from said main lube oil pump to a component of the gas turbine;   c. return piping downstream from the component of the gas turbine, wherein said return piping provides fluid communication from the component of the gas turbine to said main lube oil pump;   d. an auxiliary lube oil skid comprising an auxiliary lube oil pump, a first fluid connection downstream from said auxiliary lube oil pump to said supply piping, and a second fluid connection upstream from said auxiliary lube oil pump to said return piping.   
     
     
         9 . The system as in  claim 8 , wherein said auxiliary lube oil pump comprises a predetermined sized AC/DC motor. 
     
     
         10 . The system as in  claim 8 , further comprising a flow control valve on said auxiliary lube oil skid between said auxiliary lube oil pump and said first fluid connection. 
     
     
         11 . The system as in  claim 8 , further comprising a flow control valve on said auxiliary lube oil skid between said second fluid connection and said auxiliary lube oil pump. 
     
     
         12 . The system as in  claim 8 , further comprising an auxiliary heat exchanger on said auxiliary lube oil skid. 
     
     
         13 . The system as in  claim 12 , further comprising an auxiliary cooling pump on said auxiliary lube oil skid in fluid communication with said auxiliary heat exchanger. 
     
     
         14 . The system as in  claim 8 , further comprising a control circuit operably connected to said auxiliary lube oil pump, wherein said control circuit prevents operation of said auxiliary lube oil pump unless a predetermined condition exists. 
     
     
         15 . A method for supplying lube oil to a gas turbine, comprising:
 a. connecting an auxiliary lube oil pump to supply piping of a main lube oil system, wherein the supply piping provides fluid communication from a main lube oil pump to a component of the gas turbine;   b. connecting said auxiliary lube oil pump to return piping of the main lube oil system, wherein the return piping provides fluid communication from the component of the gas turbine to the main lube oil pump; and   c. operating said auxiliary lube oil pump to supply lube oil to the supply piping.   
     
     
         16 . The method as in  claim 15 , further comprising removing heat from the lube oil with an auxiliary heat exchanger in fluid communication with said auxiliary lube oil pump. 
     
     
         17 . The method as in  claim 16 , further comprising operating an auxiliary cooling pump to remove heat from said auxiliary heat exchanger. 
     
     
         18 . The method as in  claim 15 , further comprising verifying a predetermined condition exists prior to connecting said auxiliary lube oil pump to the supply piping of the main lube oil system. 
     
     
         19 . The method as in  claim 15 , further comprising verifying a predetermined condition exists prior to connecting said auxiliary lube oil pump to the return piping of the main lube oil system. 
     
     
         20 . The method as in  claim 15 , further comprising verifying a predetermined condition exists prior to operating said auxiliary lube oil pump to supply lube oil to the main lube oil system.

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