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US 2019/0293067 A1Published application
Cryogenic pump
AssigneeCryostar SAS
InventorMarc BONVILAIN
Life of this patent
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Abstract
This cryogenic pump comprises: a pump body (2) inside which is a piston (26) mounted so as to be mobile in translation along an axis (24) referred to as the longitudinal axis and bounding a pumping chamber (31), means for supplying liquid to the pumping chamber (31) and means for discharging pressurized liquid from the pumping chamber (31), comprising a discharge valve (40) mounted in a discharge valve body (18) mounted on the longitudinal axis (24), the supply means comprising a supply valve (42) arranged at the periphery of the discharge valve body (18).
Claims12
A cryogenic pump comprising:
- a pump body (2) inside which is a piston (26) mounted so as to be mobile in translation along an axis (24) referred to as the longitudinal axis and bounding a pumping chamber (31),
- means for discharging pressurized liquid from the pumping chamber (31), comprising an outlet realized in a discharge valve body (18) mounted on the longitudinal axis (24), said outlet being closed by a discharge valve (40) mounted in said discharge valve body (18),
- means for supplying liquid to the pumping chamber (31), comprising a supply valve (42) arranged around the outlet of the pumping chamber, and
- a supply chamber (60) arranged about the discharge valve body (18) in communication with the pumping chamber (31) via at least one passage whose opening and closing are controlled by the supply valve (42),
- characterized in that
- the supply chamber (60) is closed on the side opposite the piston (26) by a cover (12) comprising a first passage to allow a supplying of cryogenic liquid from the supply chamber (60) and a second passage to allow a discharging of pumped liquid.
3 more elements
Dependencies are inferred from the claim text.