Safe operation of Liquid nitrogen tanks
Editor:adminClick：
Time:2018-03-29 17:14
Safe operation of Liquid nitrogen tanks
The inner and outer bladders of the liquid nitrogen tank are made of high-strength aluminum alloy, and the vacuum between the inner bladder and the outer bladder is. Compared with liquid nitrogen storage tanks, transport-type liquid nitrogen tanks have a special shock-proof structure, which is sturdy and durable. The most commonly used liquid nitrogen tank is 10L, which is easy to transport and has good refrigeration performance. Since the liquid nitrogen container-liquid nitrogen tank is in a vacuum state, the external bladder is exposed to atmospheric pressure of about 4000-5000 kg, so excessive collision and impact should be strictly prevented during use. Liquid nitrogen tanks are prone to dents under excessive impact and impact. If the properties of the liquid nitrogen tank remain unchanged, they can still be used, otherwise they will not be repaired. The neck of the liquid nitrogen tank is made of glass-reinforced plastic and has a very low thermal conductivity, which minimizes the external heat entering the neck. The neck tube is slender and has a groove around it, which facilitates the timely release of vaporized nitrogen out of the tank, reducing the pressure in the tank.
The temperature of liquid nitrogen is -195.8°C, commonly referred to as -196°C. Because liquid nitrogen is formed by repeated high pressure cooling, the density of liquid nitrogen is much greater than that of other nitrogen. After 1L of liquid nitrogen vaporizes, it will expand to 680L of nitrogen after the temperature rises by 15°C, that is 680 times of expansion, and has a great expansion. In the production practice, some users fill the neck tube with other objects and cover it with rubber. After the lid is closed, the lid is tightly wrapped with plastic to reduce the evaporation of liquid nitrogen. This is unscientific and will make the pressure in the tank too high. Damage to the liquid nitrogen tank. Although nitrogen is odorless and non-toxic, it can cause suffocation and death in the event of poor ventilation. Therefore, the storage of liquid nitrogen tank should not choose room, should be placed in a cool and ventilated place. Liquid nitrogen is a liquid, and liquid nitrogen cans should be prevented from being dumped during transportation or storage.
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