Single fill valve
A single fill valve for a cryogenic liquid storage vessel. The valve includes a central opening configured to receive a cryogenic liquid and distal and bottom openings configured to direct cryogenic liquid into the cryogenic liquid storage vessel. The valve further includes a plunger and a pin configured to move the plunger and block at least the distal and bottom openings of the single use valve.
1. A single fill valve for a liquid storage vessel, comprising:
a tube-like cylindrical body with a proximal and a distal ends with each of the ends terminated by a coupling arrangement;
a central opening configured to receive a liquid or a gas, the central opening having an inflow passage in communication with a first opening at the distal end and a second opening, in a side wall of the cylindrical body, which communicates with the first opening, the first and second openings being configured to direct the liquid or gas into a cryogenic liquid storage vessel;
a pin;
a plunger configured to be moved by the pin to maintain blockage of the inflow passage preventing the liquid or gas from entering the first and second openings and thus the cryogenic liquid storage vessel.
2. The valve according to claim 1 wherein upon completion of cryogenic liquid storage vessel charging of the cryogenic liquid or gas, the plunger is constructed and arranged activated to be moved via the pin to a position to continuously block at least the inflow passage.
3. The valve according to claim 1 wherein the coupling arrangement is a thread.
4. The valve according to claim 1 further including a one way ball valve disposed in a discharge port of the cylindrical body, the one way ball valve being constructed and arranged to facilitate discharge of the cryogenic liquid or gas from the liquid storage vessel through the discharge port and to prevent cryogenic liquid or gas from entering the cryogenic liquid storage vessel via the discharge port.
5. The valve according to claim 1 wherein the valve includes a burst disc and wherein a burst disk acts as a safety pressure release mechanism.
6. The valve according to claim 5 wherein the burst disc communicates with inner space of the vessel.
7. The valve according to claim 5 wherein a cryogenic liquid pressure in inner space of the vessel is applied to the burst disk.
8. The valve according to claim 1 , wherein the first opening is transverse with respect to the second opening and the first and second openings communicate at an area that interests with the inflow passage, the plunger being constructed and arranged to be moved to the area to block the inflow passage and thus the first and second openings.