US 12,152,598 B2
High pressure gas sealing
Vitali Kvachnev, Pearland, TX (US)
Assigned to Dover Pumps & Process Solutions Segment, Inc., Downers Grove, IL (US)
Filed by Dover Pumps & Process Solutions Segment, Inc., Downers Grove, IL (US)
Filed on Sep. 11, 2023, as Appl. No. 18/464,994.
Application 18/464,994 is a continuation of application No. 17/323,198, filed on May 18, 2021, granted, now 11,788,541.
Claims priority of provisional application 63/026,219, filed on May 18, 2020.
Prior Publication US 2024/0077083 A1, Mar. 7, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F16J 15/34 (2006.01); F04D 29/10 (2006.01); F16J 15/447 (2006.01)
CPC F04D 29/104 (2013.01) [F16J 15/3484 (2013.01); F16J 15/4474 (2013.01); F05D 2240/55 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A gas compressor system comprising:
a compressor cylinder defining a cavity for processing a gas and comprising a compressor cylinder gas inlet for accepting process gas into the cavity at an input pressure, and a compressor cylinder gas outlet for discharging process gas from the cavity at an output pressure that is higher than the input pressure;
a reciprocating shaft coupled to the compressor cylinder and configured to transfer mechanical energy to gas in the compressor cylinder; and
a progressive sealing system that defines an intermediate pressure space between adjacent seals spaced along the reciprocating shaft between the cavity and atmosphere,
wherein the intermediate pressure space is in fluid communication with the compressor cylinder gas inlet via a flow line spaced from the reciprocating shaft such that process gas leaked from the compression cylinder into the intermediate pressure space is ported back to the compressor cylinder gas inlet.