Frac pump seat assembly
AssigneeST9 Gas and Oil, LLC
InventorChris Buckley
Life of this patent
Estimating the term…
Abstract
A frac pump valve seat assembly includes a seat body and a wiper seal. The seat assembly is configured to mitigate the risk of fluid end erosion in the valve seating area by automatically clearing or wiping the mating surface of the fluid end at the time of installation. The wiper seal is located at a lower portion of the seat body and is designed to interface therewith the mating surface of the fluid end. Upon installation, the wiper seal scrapes or cleans the mating surface of propellants, sand, and other contaminants that may remain after initial cleaning. The contact surface of the seat body is optionally further reinforced with material implants with greater hardness than the material of the seat body.
Claims25
A valve seat assembly, comprising:
- a seat body having a central channel extending between an upper surface and a lower surface, the central channel having a tapered surface adjacent the upper surface, the seat body having an outer surface with an upper outer surface portion adjacent the upper surface of the seat body having a first diameter and a lower outer surface portion having a second diameter adjacent the lower surface of the seat body, the second diameter smaller than the first diameter, the seat body further having a notch formed in the outer surface adjacent the lower surface of the seat body at the intersection of the lower outer surface portion and the lower surface of the seat body;
- and
- a wiper seal disposed in the notch about the lower outer surface portion and adjacent the lower surface of the seat body, the wiper seal having a base with a lip protruding from the base and a groove formed in the base adjacent the lip, wherein the seal has a seal diameter at the lip that is larger than the second diameter.
A valve seat assembly, comprising:
- a seat body having a central channel extending between an upper surface and a lower surface, the central channel having a tapered surface adjacent the upper surface, the seat body having an outer surface with an upper outer surface portion having a first diameter adjacent the upper surface of the seat body and a lower outer surface portion having a second diameter adjacent the lower surface of the seat body, the second diameter smaller than the first diameter, the seat body further having a notch formed in the lower outer surface portion of the seat body at the intersection of the lower outer surface portion and the lower surface of the seat body;
- and
- a wiper seal disposed in the notch about the lower outer surface portion, the wiper seal having a base with a lip protruding from the base and a groove formed in the base adjacent the lip, wherein the base is seated in the notch and the lip extends outward from the base beyond the outer surface such that a diameter of the seal is greater than the second diameter.
A valve seat assembly, comprising:
- a seat body having a central channel extending between an upper surface and a lower surface, the central channel having a tapered surface adjacent the upper surface, the seat body having an outer surface with an upper outer surface portion intersecting the upper surface of the seat body and having a first diameter and a lower outer surface portion intersecting the lower surface of the seat body and having a second diameter smaller than the first diameter, the seat body further having a notch formed at the intersection of the lower outer surface portion and the lower surface of the seat body;
- and
- a wiper seal disposed in the notch about the lower outer surface portion, the wiper seal having a base with a lip protruding from the base, wherein the base is seated in the notch and the lip extends outward from the base beyond the outer surface such that a diameter of the seal is greater than the second diameter.
Dependencies are inferred from the claim text.