Automatic filling termination device and cryogenic vessel with the same

A cryogenic vessel for storing cryogenic medium having a low working temperature, equipped with an inlet pipe for filling the cryogenic medium into said vessel, wherein an automatic filling termination device is provided within the cryogenic vessel, the cryogenic vessel comprising:

• a body with a chamber, defined in the cryogenic vessel and provided with
• an inlet opening, communicated with the inlet pipe for filling cryogenic medium into the chamber, and
• an outlet opening, arranged on a top wall of the body for discharging the cryogenic medium in the chamber into the cryogenic vessel;
• a flow termination member for blocking the outlet opening of the body, defined in the chamber of the body and has a predetermined weight so as not to be floated in the cryogenic medium;
• a floater, located outside the body and being capable of moving up and down when the liquid level of the cryogenic medium as filled into the cryogenic vessel is changed;
• a connection, penetrated through the outlet opening of the body to connect the flow termination member with the floater, wherein an internal diameter of the outlet opening is greater than an outer diameter of the connection by a predetermined dimension;
• and
• a flow disturbing plate, which is separate from said body and disposed between the outlet opening of the body and the floater so that the cryogenic medium spurting out from the outlet opening is spurt onto a lower surface of the flow disturbing plate and then splashes down directly into the vessel inside, wherein the connection penetrates through the flow disturbing plate via a through hole disposed on said flow disturbing plate, wherein the internal diameter of the through hole is approximately equal to the outer diameter of the connection,
• wherein when the liquid or liquefied cryogenic medium within the cryogenic vessel reaches a predetermined liquid level, the floater floats upwardly and makes the flow termination member reach the top wall of the body and block the outlet opening,
• wherein the automatic filling termination device is located at a position close to a top portion of the cryogenic vessel, so that at least part of the cryogenic medium vapor gathering in the upper portion of the cryogenic vessel is cooled and/or re-liquified by the cryogenic medium splashing down from the flow disturbing plate so as to reduce the pressure in the cryogenic vessel without exhausting any cryogenic medium vapor from the cryogenic vessel.