US 12,305,816 B2
Pipeline energy recovery system
Gregory T. Semler, Portland, OR (US); Caitlin Forinash, Portland, OR (US); and Todd E. Stevens, Portland, OR (US)
Assigned to INPIPE ENERGY, INC., Portland, OR (US)
Filed by InPipe Energy, Inc., Portland, OR (US)
Filed on Jan. 9, 2024, as Appl. No. 18/408,465.
Application 18/408,465 is a continuation of application No. 17/080,620, filed on Oct. 26, 2020, granted, now 11,946,604.
Prior Publication US 2024/0142064 A1, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F17D 5/00 (2006.01); F03B 13/00 (2006.01); F03B 13/08 (2006.01); F16K 31/126 (2006.01)
CPC F17D 5/00 (2013.01) [F03B 13/00 (2013.01); F03B 13/08 (2013.01); F16K 31/1268 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fluid flow arrangement, comprising:
a primary conduit flowing a pressurized fluid;
a bypass conduit coupled to the primary conduit and configured to divert at least a portion of the pressurized fluid flow from the primary conduit through the bypass conduit;
a dual solenoid operated control valve arranged in the bypass conduit, the dual solenoid operated control valve configured to control both flow and pressure in the bypass conduit, the dual solenoid operated control valve comprising a first solenoid pilot valve, a second solenoid pilot valve, and a mechanically actuated pressure-reducing pilot valve; and
a turbine positioned in the bypass conduit and operated based on the fluid flow through the bypass conduit,
wherein the dual solenoid operated control valve comprises a primary chamber and a secondary chamber, wherein both the first solenoid pilot valve and the second solenoid pilot valve are coupled to the primary chamber, wherein the mechanically actuated pressure-reducing pilot valve is coupled to the secondary chamber, and wherein the primary chamber is controlled based on a flowrate through the bypass conduit and the secondary chamber is controlled based on a pressure in a portion of the bypass conduit downstream of the turbine.