Jar body suit spare of bilayer structure tank car

The utility model relates to an adopt a jar body suit spare of bilayer structure tank car of the inside and outside jar of body of tank car of double -deck tank structure form. Establish at inner tank jar outer jar of external barrel including the inner tank jar body and cover, an outer jar barrel includes outer jar barrel of left part and the outer jar barrel of right part, and the open butt joint department of outer jar barrel of left part and the outer jar barrel of right part is for connecting annular boss to it is fixed through bolted connection. Therefore, the utility model has the advantages of as follows: stable in structure can transport with constant temperature, an outer jar barrel can play the guard action to the raw materials, even the damaged raw materials of outer wall can not run off yet, it is convenient to remove.