Pressure relief valve with pressure indicating means

Details Pressure relief valve with pressure indicating means Pressure relief valve with pressure indicating means

1978-09-28

1980-11-11

Schwadron, Martin P.

Fluid handling

Destructible or deformable element controlled

Destructible element

73724, 137557, 361283, F16K 1740, G01L 912

Patent

active

042326982

ABSTRACT:
An adjustably positionable element having a curved end plate is located in proximity to the conventional rupturable curved disc in a pressure relief valve for high pressure cylinders. The end plate serves as one plate of a capacitor and the curved disc serves as the other plate. Impedance variation responsive circuitry senses any change in impedance of the capacitor due to a change in flex of the curved disc brought about by a variation in pressure within the cylinder to which the relief valve is attached. The change in impedance is calibrated to provide an indication of the actual pressure within the cylinder.

REFERENCES:
patent: 2355088 (1944-08-01), Lavoie
patent: 2367866 (1945-01-01), Humphreys et al.
patent: 2526794 (1950-10-01), Andrews
patent: 3222581 (1965-12-01), Lenfant

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