During the production process of LNG Cryogenic Tank, because the heat exchanger tube sheets will be washed by water, cavitation and corrosion of trace chemical media, leakage often occurs at the welds of the tube sheets, resulting in the mixing of water and chemical materials. , the temperature of the production process is difficult to control, resulting in the production of other products. It will seriously affect the quality of the product and reduce the grade of the product.
After the leakage of the welding seam of the condenser tube sheet, the enterprise usually uses the traditional repair welding method to repair it. The internal stress inside the tube sheet is easy to generate, and it is difficult to eliminate it, resulting in leakage of other heat exchangers. , Repeated repair welding and experiments, 2 to 4 people need several days to complete the repair. After a few months of use, the tube sheet welds will corrode again, which will bring waste of manpower, material resources and financial resources to the enterprise, and increase production costs.
A cryogenic storage tank is a high-vacuum refrigerator. So how to extend the service life of LNG Cryogenic Tank during the use of liquid nitrogen tanks? The following LNG Cryogenic Tank manufacturers share with you how to extend the service life of LNG Cryogenic Tank:
1. Before using the liquid nitrogen tank, a small amount of liquid nitrogen should be injected to pre-cool it, and when the temperature in the tank reaches the liquid nitrogen temperature, liquid nitrogen should be filled until the tank is full. It is necessary to check the neck plug and the small groove of the neck plug at any time, and remove the ice on the neck plug in time. Plastic cloth and other substances cannot be placed on the neck plug to increase the sealing performance and ensure the use function of the liquid nitrogen tank.
2. The low-temperature storage tank should be handled gently to prevent collision and extrusion. When moving, it should not be dragged on the ground, but should be lifted. Usually stored in a dry, well-ventilated room to prevent moisture.
Even if there is leakage after use, in fact, it can be repaired in time through technology to avoid long-term surfacing affecting production. The probability of occurrence will be greatly reduced, which not only reduces the cost of purchasing heat exchanger equipment, but also ensures product quality, production time, and improves product competitiveness.
Post time: Jul-28-2022