Low-emission nozzle and receptacle coupling for cryogenic fluid

A nozzle for coupling to and providing cryogenic fluid to a receptacle, the nozzle comprising:

• a body including a front end and a back end, the body comprising:
• an outer shell;
• one or more body segments defining a chamber through which the cryogenic fluid is to flow to the receptacle;
• and
• a plurality of interior walls including an inner interior wall and an outer interior wall,
• wherein the inner interior wall extends from one of the one or more body segments at the front end and back toward the back end of the body in a substantially longitudinal direction,
• wherein the outer interior wall extends from a back end of the inner interior wall and to the outer shell adjacent to the front end of the body, and
• wherein the outer shell and the plurality of interior walls are sealingly coupled together and extend longitudinally back-and-forth in a zig-zag pattern to define an elongated conduction path from an exterior of the nozzle to the chamber that impedes a heat leak between the chamber and the exterior,
• an insulation layer located radially between the chamber and the outer shell;
• a shaft having a first end and a second end, wherein the shaft is housed within and slidably extending through the chamber;
• a poppet seat positioned adjacent to the front end of the body;
• a poppet coupled to the first end of the shaft, wherein the poppet is configured to engage a receptacle poppet when the receptacle is coupled to the nozzle, wherein the poppet is configured to engage the poppet seat in a closed position and be disengaged from the poppet seat in an open position;
• an actuator comprising a stem that is operatively coupled to the shaft, wherein the stem is configured to linearly actuate to cause the poppet coupled to the shaft to actuate between the closed position and the open position;
• and
• a coupling assembly configured to couple the actuator to the back end of the body, wherein the coupling assembly includes insulating material to thermally isolate the actuator from the chamber through which the cryogenic fluid is to flow.

A nozzle for coupling to and providing cryogenic fluid to a receptacle, the nozzle comprising:

• a body including a front end and a back end and defining a chamber through which the cryogenic fluid is to flow to the receptacle;
• a shaft having a first end and a second end, wherein the shaft is housed within and slidably extending through the chamber;
• a poppet coupled to the first end of the shaft;
• an actuator comprising a stem coupled to the second end of the shaft, wherein the stem is configured to linearly actuate to cause the shaft and the poppet to linearly actuate;
• and
• a coupling assembly coupling the actuator to the back end of the body, wherein the coupling assembly includes:
• insulating material to thermally isolate the actuator from the chamber through which the cryogenic fluid is to flow;
• a shaft guide coupled to the body;
• and
• a first bellows seal coupled to and extending between a flange of the shaft and the shaft guide to form a seal between the shaft and the shaft guide.

A nozzle for coupling to and providing cryogenic fluid to a receptacle, the nozzle comprising:

• a body including a front end and a back end and defining a chamber through which the cryogenic fluid is to flow to the receptacle;
• a shaft having a first end and a second end, wherein the shaft is housed within and slidably extending through the chamber;
• a poppet coupled to the first end of the shaft;
• an actuator comprising a stem coupled to the second end of the shaft, wherein the stem is configured to linearly actuate to cause the shaft and the poppet to linearly actuate;
• and
• a coupling assembly coupling the actuator to the back end of the body, wherein the coupling assembly includes insulating material to thermally isolate the actuator from the chamber through which the cryogenic fluid is to flow, wherein the coupling assembly further includes a connector and a crimped fastener, wherein the connector receives the second end of the shaft and an uncrimped end of the crimped fastener receives the connector, and wherein a crimped end of the crimped fastener is crimped around a flared end of the stem to couple the second end of the shaft to the stem of the actuator.