Coupling nozzle for cryogenic fluid

A coupling nozzle for cryogenic fluid flow, comprising:

• a flow body defining a conduit through which the cryogenic fluid is permitted to flow;
• a mount;
• a flow control assembly;
• a pneumatic cylinder comprising:
• a cylinder body fixedly positioned relative to the mount;
• and
• a shaft configured to slide between an extended position and a contracted position, wherein the shaft is coupled to and configured to actuate the flow body;
• a first locking mechanism coupled to the mount and configured to secure the coupling nozzle to a receptacle in a locked position, wherein, when the first locking mechanism is in the locked position, the shaft is configured to transition between the extended position and the contracted position to actuate the flow control assembly between an open position and a closed position, respectively;
• and
• a redundant locking mechanism including one or more feet and a lock, wherein the one or more feet are configured to engage the lock to prevent the first locking mechanism from transitioning from the locked position when the shaft is in the extended position.

A coupling nozzle for cryogenic fluid flow, comprising:

• a flow body defining a conduit through which the cryogenic fluid is permitted to flow;
• a mounting ring through which the flow body slidably extends;
• a pneumatic cylinder comprising:
• a cylinder body fixedly positioned relative to the mounting ring;
• and
• a shaft configured to slide between an extended position and a contracted position, wherein the shaft is coupled to and configured to actuate the flow body;
• a first locking mechanism coupled to the mounting ring and configured to secure the coupling nozzle to a receptacle, wherein the conduit is fluidly coupled to the receptacle when the first locking mechanism has secured the coupling nozzle to the receptacle;
• a flow control assembly at least partially disposed in the conduit of the flow body, the flow control assembly comprising:
• a valve seat fixed to the flow body;
• a plug configured to slide between a closed position and an open position, wherein the plug is configured to engage the valve seat in the closed position to prevent the cryogenic fluid from flowing through the flow body and disengage the valve seat in the open position to enable the cryogenic fluid to flow through the flow body;
• and
• a stem extending beyond the plug, wherein the stem is configured to engage a receptacle stem of the receptacle when the first locking mechanism is locked to the receptacle,
• wherein, when the first locking mechanism is locked to the receptacle and the pneumatic cylinder actuates from the contracted position to the extended position, the shaft is configured to cause the valve seat fixed to the flow body to move relative to and disengage from the plug to open the flow control assembly;
• wherein, when the first locking mechanism is locked to the receptacle and the pneumatic cylinder actuates from the extended position to the contracted position, the shaft is configured to cause the valve seat fixed to the flow body to move relative to and engage the plug to close the flow control assembly;
• and
• a redundant locking mechanism configured to prevent the first locking mechanism from transitioning from a locked position when the pneumatic cylinder is in the extended position, wherein the redundant locking mechanism includes one or more feet and a lock, and wherein the one or more feet are configured to engage the lock to prevent movement of the first locking mechanism from the locked position.