Method of sealing a generator stator bar and a stator bar end fitting
First Claim
1. A method of sealing a stator bar end to a stator bar end fitting, the fitting having a chamber for receiving a liquid through an opening and in communication with hollow strands in said stator bar to enable coolant liquid flow through the hollow strands, said method comprising:
- brazing the fitting to the end of the stator bar;
inserting a metallic barrier coating material into the chamber of the fitting;
liquefying the metallic barrier coating material by heating the material to a temperature at least as hot as a liquidus temperature of the coating material;
coating the end of the stator bar in the fitting with the liquefied metallic barrier coating material, andsolidifying the liquefied metallic barrier coating material to form a barrier over the end of the stator bar in the fitting, wherein said hollow end strands comprise end sections extending through and beyond the barrier.
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Accused Products
Abstract
A method of sealing a generator stator bar and a stator bar end fitting receiving the end including the steps of: brazing the fitting to the end of the stator bar with a braze material; applying a metallic barrier coating material to the end of the stator bar in the fitting; heating the fitting at a temperature at least as hot as a liquidus temperature of the metallic coating material and cooler than a solids temperature of the braze material; coating the end of the stator bar in the fitting with liquid metallic barrier coating material, and solidifying the liquefied metallic coating material to form a metallic barrier coating on the end of the stator bar in the fitting.
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Citations
12 Claims
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1. A method of sealing a stator bar end to a stator bar end fitting, the fitting having a chamber for receiving a liquid through an opening and in communication with hollow strands in said stator bar to enable coolant liquid flow through the hollow strands, said method comprising:
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brazing the fitting to the end of the stator bar; inserting a metallic barrier coating material into the chamber of the fitting; liquefying the metallic barrier coating material by heating the material to a temperature at least as hot as a liquidus temperature of the coating material; coating the end of the stator bar in the fitting with the liquefied metallic barrier coating material, and solidifying the liquefied metallic barrier coating material to form a barrier over the end of the stator bar in the fitting, wherein said hollow end strands comprise end sections extending through and beyond the barrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification