Maintenance gasbag of LNG butterfly valve

• Main Authors: LAI YABIAO, CHEN BIN, GE PENG, ZHU JIANWEN, LIN SUHUI, WANG JIANGUO, DU HUAILIN, LI CHAOPING, XU HONGTAO, CHEN YONGZHONG
• Format: Patent
• Language: Chinese; English
• Published: 01.09.2017
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The utility model relates to a new maintenance gasbag of LNG butterfly valve, accomodate the ware including gasbag, metal collapsible tube, control flap, quick -operation joint, gasbag, directness and seal for pipe joints behind the equipment entering pipeline. The utility model discloses utilizing the principle that the gasbag is sealed, realizing the crucial low temperature butterfly valve of large -scale LNG accepting station, because of the pipeline can't carry out the LNG replacement, lead to the fact this valve can't carry out a difficult problem preventative or maintenance of trouble nature, simultaneously, but not only low price reuse rate is high to adopt the gasbag, in addition, in case during this gasbag mistake gets into the LNG storage tank, will can not lead to the fact a lot of influences to the normal operating of accepting station's equipment. 本实用新型涉及种新的LNG蝶阀的维修气囊，包括气囊、金属软管、控制阀门、快速接头、气囊收纳器，所述设备进入管道后直接与管道密封。本实用新型利用气囊密封的原理，实现大型LNG接收站关键低温蝶阀，因管道无法进行LNG置换，造成该阀门无法进行预防性或故障性维修的难题，同时，采用气囊不仅价格低廉、可重复利用率