The invention relates to the technical field of liquefied gas storage and transportation equipment, in particular to a system and method for preventing liquid accumulation at the bottom of a low-temperature liquid tank and a ship, and the system comprises the low-temperature liquid tank, a gas phase pipe, a liquid phase pipe, a liquid drainage pump, a connecting pipe and a ventilation system; the inner space of the low-temperature liquid tank is a cabin, a pump well is arranged at the bottom of the cabin, a liquid discharge pump is arranged in the pump well, a liquid discharge pipe is arranged at a discharge port of the liquid discharge pump, the liquid discharge pipe leads to the outside of the cabin, and the liquid discharge pipe is provided with a liquid discharge control valve; the liquid-phase pipe comprises a liquid-phase header pipe and a pump well purging branch pipe, the liquid-phase header pipe comprises a front-section pipe and a rear-section pipe, and the gas-phase pipe comprises a gas-phase header pipe, a first gas-phase branch pipe and a second gas-phase branch pipe; the problem that liquid nitrogen accumulates in a pump well in the cold tank stage before filling operation of a large low-temperature liquid tank can be solved, the problem that accumulated liquid at the bottom of the liquid tank and in the pump well cannot be completely pumped out when liquid stored in the liquid tank is removed is solved, and the problem that the accumulated liquid in the pump well is not prone to being dried when the interior of the liquid tank is dried is solved.

    本发明涉及液化气储运设备技术领域,具体而言,涉及防止低温液罐底部积液的系统及其方法、及船舶,包括低温液罐、气相管、液相管、排液泵、连接管和透气系统;低温液罐内部空间为舱室,舱室底部设置有泵井,泵井内设置排液泵,排液泵的排口设置有排液管,排液管通向舱室外,且排液管设置有排液控制阀;液相管包括液相总管和泵井吹扫支管,液相总管包括前段管和后段管,气相管包括气相总管、第一气相支管和第二气相支管;其能解决大型低温液罐在加注操作前的冷罐阶段时液氮积聚在泵井的影响、解决清除液罐内存液操作时在液罐底部和泵井内的积液无法完全泵出的问题、以及解决在对液罐内部进行干燥处理时,泵井内积液不易被干燥的问题。


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    Titel :

    System and method for preventing liquid accumulation at bottom of low-temperature liquid tank and ship


    Weitere Titelangaben:

    防止低温液罐底部积液的系统及其方法、及船舶


    Beteiligte:
    ZHOU JING (Autor:in) / LI XIN (Autor:in) / WANG YI (Autor:in) / ZHUANG SHICHAO (Autor:in) / WANG YAN (Autor:in)

    Erscheinungsdatum :

    2022-11-08


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B08B Reinigen allgemein , CLEANING IN GENERAL / F26B DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM , Trocknen von festen Gütern oder Erzeugnissen durch Entfernen von Flüssigkeit



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