Title:
A method and a device for presuming the state of the seal of a rotary valve
Document Type and Number:
Japanese Patent JP6276276
Kind Code:
B2
Abstract:
Methods and apparatus for estimating a condition of a seal of a rotary valve are disclosed. An example apparatus includes a housing and a processor positioned within the housing. The processor is to determine a seal wearing cycle of a flow control member of a rotary valve, the seal wearing cycle includes movement of the flow control member between a first position in contact with a seal and a second position. The processor is to determine a torque of an actuator operating the flow control member for the seal wearing cycle and estimate a condition of the seal based on the torque.
Inventors:
Anderson, Shawn W.
Gray Bow, Ted Dennis
Gray Bow, Ted Dennis
Application Number:
JP2015533187A
Publication Date:
February 07, 2018
Filing Date:
September 19, 2013
Export Citation:
Assignee:
Fisher Controls International Limited Liability Company
International Classes:
F16K51/00; F16K5/06
Domestic Patent References:
| JP2005521006A |
Foreign References:
| WO2009045848A1 |
Attorney, Agent or Firm:
Akira Hirakawa
Takehiko Sekine
Hiroaki Otake
Takehiko Sekine
Hiroaki Otake
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