US 11,788,637 B2
Systems and methods for determining set pressure and lift of a spring-operated relief valve
Vishwa Kalyanasundaram, Stafford, TX (US); Katherine Si, Stafford, TX (US); and Joe Downing, Stafford, TX (US)
Assigned to Emerson Automation Solutions Final Control US LP, Houston, TX (US)
Filed by Emerson Automation Solutions Final Control US LP, Houston, TX (US)
Filed on Feb. 19, 2021, as Appl. No. 17/180,106.
Claims priority of provisional application 62/979,129, filed on Feb. 20, 2020.
Prior Publication US 2021/0262579 A1, Aug. 26, 2021
Int. Cl. F16K 17/06 (2006.01); F16K 17/04 (2006.01); F16K 17/10 (2006.01); F16K 37/00 (2006.01); G01L 5/00 (2006.01); G01M 3/00 (2006.01)
CPC F16K 17/06 (2013.01) [F16K 17/0426 (2013.01); F16K 17/105 (2013.01); F16K 37/0083 (2013.01); G01L 5/0061 (2013.01); G01M 3/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A spring-operated relief valve comprising:
a valve housing
a valve seat;
a disc assembly configured to seal against the valve seat to close the spring-operated relief valve;
a main spring arranged to bias the disc assembly towards the valve seat to define a set pressure of the spring-operated relief valve;
a load cell that, during operation of the spring-operated relief valve, is in a fixed spatial relationship relative the valve housing and in mechanical communication with the main spring, the load cell being thereby configured to measure a force exerted by the main spring on the disc assembly as the disc assembly moves relative to the valve seat; and
a pressure adjustment member,
wherein the load cell includes internal threads and the pressure adjustment member is threadably received by the internal threads, the pressure adjustment member being thereby threadably adjustable, relative to the load cell and the valve housing, to adjust a degree of compression of the main spring.