卧式椭圆形封头容器广泛用于贮运液化石油气、液氨等易燃易爆介质,如槽车、贮罐等。由于这些介质的膨胀系数较大,在罐中为带压液体,受外界温度变化的影响较大。如液化石油气的饱和蒸气压随温度升高而急剧增加,气化后体积膨胀约250～300倍,对于过量充装的槽罐,当温度上升到一定 Horizontal oval head container is widely used for storage and transportation of liquefied petroleum gas, liquid ammonia and other flammable and explosive media, such as tank cars, storage tanks and so on. Due to the large coefficient of expansion of these media, in the tank as a pressurized liquid, subject to changes in the external temperature greater impact. For example, the saturated vapor pressure of liquefied petroleum gas (LPG) increases sharply with increasing temperature. After gasification, the volume expands by about 250 to 300 times. When the temperature rises to a certain level