Invention Grant
- Patent Title: Systems and methods for providing override control for a feedwater pump recirculation valve
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Application No.: US15383466Application Date: 2016-12-19
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Publication No.: US10094370B2Publication Date: 2018-10-09
- Inventor: John Petzen , Gautam Chatterji
- Applicant: General Electric Company
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: Eversheds-Sutherland (US) LLP
- Main IPC: F04B49/06
- IPC: F04B49/06 ; F04B49/24 ; F22D5/26 ; F22D5/34 ; F22D11/02 ; F22D11/06 ; G21C7/36 ; F04D15/00 ; F22D5/20

Abstract:
Systems and methods for providing override control for a feedwater pump recirculation valve are provided. According to one embodiment, a system may include a controller and a processor communicatively coupled to the controller. The processor may be configured to receive one or more measurements associated with pump motor power driving feedwater pump flow. The feedwater pump recirculation valve may be configured to maintain a predetermined minimum recirculation flow through the feedwater pump by regulating recirculation pump flow through a recirculation line. The processor may be also configured to calculate, based at least in part on the one or more measurements, the recirculation pump flow, and compare the recirculation pump flow to the predetermined minimum recirculation flow. Based at least in part on the comparing, the processor may selectively provide an override control signal to the feedwater pump recirculation valve to selectively modify the recirculation pump flow.
Public/Granted literature
- US20170292512A1 Systems and Methods for Providing Override Control for a Feedwater Pump Recirculation Valve Public/Granted day:2017-10-12
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