发明名称 |
Passive Overpressure and Underpressure Protection For A Cryogen Vessel |
摘要 |
In a magnet system for MRI imaging comprising a superconducting magnet (10) mounted within a cryogen vessel (12), apparatus is provided for controlling egress of cryogen gas from the cryogen vessel. The apparatus comprises a controlled valve (42) linking the interior of the cryogen vessel to a gas exit path; and a controller (30) arranged to control the valve. The valve is arranged such that a gas pressure in the cryogen vessel exceeding a gas pressure in the gas exit path acts on the valve to open the valve and allow venting of cryogen gas. The valve is also arranged such that a gas pressure in the cryogen vessel inferior to a gas pressure in the gas exit path acts on the valve to urge it closed, so restricting flow of gas into the cryogen vessel.
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申请公布号 |
US2009277517(A1) |
申请公布日期 |
2009.11.12 |
申请号 |
US20090463740 |
申请日期 |
2009.05.11 |
申请人 |
SIEMENS MAGNET TECHNOLOGY LTD. |
发明人 |
MANN NICHOLAS |
分类号 |
F16K17/06;G01R33/035;G01R33/3815 |
主分类号 |
F16K17/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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