The pearlescent sand filling process of cryogenic storage tanks is a critical step that is of great significance to ensure the stability and performance of the storage tank. Before filling pearlescent sand, it is necessary to ensure that the cryogenic storage tank is in a qualified state of vacuum leak detection, which is to ensure that the storage tank has no leakage or defects, so as to avoid the undesirable situation in the pearlescent sand filling process.
When choosing pearlescent sand, you need to choose fresh pearlescent sand, and avoid using sand with a large proportion of moisture. This is because moisture-coated pearlescent sand may cause its properties to deteriorate and not achieve the desired thermal insulation. In order to ensure the filling effect and service life of pearlescent sand, it must be treated with special drying equipment and ensure that its moisture content is less than 03%。
When filling pearlescent sand, different pumps are required for sand filling for cryogenic storage tanks of different capacities. Generally speaking, for cryogenic storage tanks below 30 cubic meters, rotary vane pumps can be used as sand filling pumps, while for cryogenic storage tanks larger than 30 cubic meters, water ring pumps can be used as sand filling pumps. The selection and use of these pumps can ensure the efficiency and effectiveness of pearlescent sand filling.
After the storage tank is filled with sand, in order to ensure that the density of pearlescent sand is uniform and free of voids, it is necessary to use the evacuation method to carry out airflow impact on the interlayer 2 4 times. This impact can make the pearlescent sand more tightly filled in the storage tank, improving its thermal insulation performance and use effect.
To sum up, the pearlescent sand filling process of cryogenic storage tanks needs to be strictly controlled, and all links from the selection of pearlescent sand to filling and impact must be carefully implemented to ensure the performance and quality of the storage tank.