众所周知,由于密封性不能保证,轻油罐车下部卸油的问题一直没有解决。用鹤管进行罐车上部卸油造成的“汽阻”,一直是油库作业中的一大难题。为彻底解决高温时鹤管顶部发生的“汽阻”现象,同时也解决自流灌泵,减小作业强度等一系列问题,对 As we all know, due to the sealing can not be guaranteed, the lower part of the tanker off the oil problem has not been solved. With crane pipe tank top unloading caused by the “vapor resistance” has been a major problem in the depot operations. In order to completely solve the problem of “vapor resistance” occurring at the top of a crane pipe at a high temperature, and also solve a series of problems of gravity pump and reducing work intensity,