I’m seeking help from experienced forum users: what is the maximum daily pressure increase in a liquid nitrogen storage tank that is considered normal?
Thread Content
Our factory has just put into use a 50-liter liquid nitrogen tank, which contains around 40 liters of liquid nitrogen. However, the pressure seems to increase quite rapidly – by about 4 kilograms per day. Is such a rate of loss considered normal?
The liquid nitrogen tank is equipped with a pressure-boosting device, in case the pressure-boosting system is turned off. Gaining 4 kilograms in a day is definitely not normal. If it keeps rising every day, causing the safety valve to activate, that is definitely abnormal. If the pressure increases slowly once it reaches a certain value, it indicates that the storage tank is functioning properly. It’s hard to make a judgment without knowing the specific circumstances.
The automatic pressure increase system is not in use; visually, there is no frost on the pipelines related to this system, so internal valve leaks can be ruled out. Nevertheless, the pressure still rises by at least 2 kilograms per day, which suggests that the insulation of the tank is not adequate.
The automatic pressure increase system is not in use; visually, there is no frost on the pipelines related to this system, so internal valve leaks can be ruled out. Nevertheless, the pressure still rises by at least 2 kilograms per day, which suggests that the insulation of the tank is not adequate.
The pressurization system is turned off. Increasing the pressure by two kilograms per day must be a problem. 1. Vacuum issue in the storage tank, measured using a vacuum gauge. 2. The valve has a very slight internal leakage, which is difficult to eliminate. 3. The design of the interlayer pipeline is unreasonable. It’s best to let the manufacturer handle it. There’s a problem with the new tank. Could you tell me which manufacturer the storage tank is from?