Automated Cryogenic Refilling System
    1.
    发明申请

    公开(公告)号:US20190211970A1

    公开(公告)日:2019-07-11

    申请号:US16225396

    申请日:2018-12-19

    申请人: UT-Battelle, LLC

    IPC分类号: F17C5/06 F17C13/02

    摘要: An improved system and method for the automated refilling of cryogenic helium is provided. In one embodiment, the system includes a dewar in fluid communication with a liquid helium cryostat through a cryogen transfer line. A controller regulates operation of a three-way valve to pre-cool the transfer line and to cause gaseous helium to flow to the dewar and force liquid helium through the transfer line into the cryostat. The controller is coupled to the output of a cryogenic level sensor, such that the controller regulates the helium liquid level within the cryostat. During filling cycles, the dewar liquid level is also monitored by the cryogenic level sensor and an alarm sounds if the dewar liquid level is undesirably low. Between filling cycles, the controller is operable to ventilate the dewar through a solenoid vent valve in fixed time intervals to ensure the dewar pressure is sufficiently low so as to not bleed liquid helium into the cryostat.

    FUEL CELL VEHICLE
    8.
    发明申请
    FUEL CELL VEHICLE 审中-公开

    公开(公告)号:US20180143095A1

    公开(公告)日:2018-05-24

    申请号:US15811399

    申请日:2017-11-13

    发明人: Keisuke FUJITA

    IPC分类号: G01L27/00 F17C13/02 B60L11/18

    摘要: When a calibration starting condition of a pressure sensor is satisfied while a fuel cell vehicle is traveling, the fuel cell vehicle starts to travel by using electric power supplied from a secondary battery. In the fuel cell vehicle, a pressure sensor is calibrated based on hydrogen pressure in a hydrogen gas flow channel downstream of a pressure reducing valve after a shut-off valve of a hydrogen tank is closed, and the hydrogen in a hydrogen gas flow channel is exhausted until hydrogen pressure upstream of the pressure reducing valve and hydrogen pressure downstream of the pressure reducing valve become substantially equal to each other. The fuel cell vehicle travels by using electric power supplied from the secondary battery while the pressure sensor is being calibrated, so that calibration processing of the pressure sensor can be performed without causing a noise.