Invention Grant
US09341277B2 Method, system and apparatus for automatic calibration of a needle valve device in a pressurized flow system
有权
用于在加压流动系统中自动校准针阀装置的方法,系统和装置
- Patent Title: Method, system and apparatus for automatic calibration of a needle valve device in a pressurized flow system
- Patent Title (中): 用于在加压流动系统中自动校准针阀装置的方法,系统和装置
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Application No.: US14381974Application Date: 2013-03-07
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Publication No.: US09341277B2Publication Date: 2016-05-17
- Inventor: Joshua A. Shreve , Paul Keenan , John Maillet, Jr. , Ryan Hill
- Applicant: Waters Technologies Corporation
- Applicant Address: US MA Milford
- Assignee: Waters Technologies Corporation
- Current Assignee: Waters Technologies Corporation
- Current Assignee Address: US MA Milford
- Agency: McCarter & English, LLP
- Agent Deborah M. Vernon
- International Application: PCT/US2013/029580 WO 20130307
- International Announcement: WO2013/134496 WO 20130912
- Main IPC: F16K27/02
- IPC: F16K27/02 ; F16K1/38 ; G01N30/20 ; G01N30/32 ; F16K31/06 ; B01D15/40

Abstract:
Exemplary embodiments are directed to apparatus, systems and methods used in connection with a needle valve device operating in a pressurized flow system. The apparatus, systems and methods provide for automatic positioning of a needle relative to a seat in the needle valve device to provide consistent calibration with minimal user interaction after a maintenance event or upon a start-up of the pressurized flow system. The apparatus, systems and methods utilize a calibration collar secured to a shaft of an actuator within the needle valve device. The calibration collar includes one or more locking mechanism and a spring.
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