发明名称 |
Vorrichtung zur Regelung des Füllstandes einer kryogenen Flüssigkeit |
摘要 |
<p>An apparatus for controlling level of cryogenic liquid in a vessel includes a transfer duct to a pressure supply tank. Pressure pulses are applied to the tank at one rate when the level is below a primary sensor in the vessel, and at a lower rate when the level is above the sensor, so as to compensate for intrinsic declination of the level. At startup a constant pressure is applied to the tank until the level reaches a lower sensor, and a relief valve over the tank is opened when the level overshoots to an upper sensor. Turbulence in the vessel is reduced by a pair of coaxial baffles at the liquid inlet to the vessel, and by a housing with tubular extensions enveloping the sensors. <IMAGE></p> |
申请公布号 |
DE69626179(T2) |
申请公布日期 |
2003.06.26 |
申请号 |
DE1996626179T |
申请日期 |
1996.12.03 |
申请人 |
PERKINELMER INSTRUMENTS LLC (A DELAWARE CORP.), SHELTON |
发明人 |
MCCORKLE, E. JOEL;VOGEL, HERMAN;MARGULIES, MARCEL;FERRANTI, RICHARD T. |
分类号 |
F17C5/02;F17C13/02;G05D9/12;(IPC1-7):F17C13/02;F17C6/00 |
主分类号 |
F17C5/02 |
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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