This product is a horizontal fixed vacuum powder insulating low-temperature storage tank, featuring a double-layered cylindrical structure. The inner container is used for storing low-temperature liquefied natural gas, while the outer shell forms and protects the vacuum insulation space. The annular space is filled with pearlescent sand and evacuated to create an effective insulation system. The design of the outer shell and support system can withstand the forces generated during manufacturing, transportation, installation, and use. The tank bottom is equipped with a complete set of valves, instruments, and safety devices for operation.
Safety:
One, stainless steel plates are sourced from Taiyuan Iron and Steel Plant, the leading manufacturer of stainless steel plates in China, ensuring quality. Tube materials are procured from Anhui Tianda Steel Tube, the No.1 supplier of domestic stainless steel seamless tubes.
Material specifications are as follows:GB150-2011The "Pressure Vessel" undergoes re-inspection; material cutting is performed using a CNC plasma cutting machine, with strict control over the geometric dimensions of the cylinder sections.
Section 3: Both longitudinal and circumferential seams are welded using submerged arc welding, resulting in good appearance and forming, and the inner lining is also treated.100%XRadiation Detection
Vacuum Degree:
One, the inner and outer surfaces of the stainless steel liner are degreased and pickled passivated, and the carbon steel shell's inner and outer surfaces are sandblasted to remove rust, ensuring paint adhesion, extending the paint's corrosion resistance lifespan, enhancing the stainless steel plate's corrosion resistance, and reducing the amount of air released from the sandwich, thereby guaranteeing the longevity of the vacuum degree.
Two, perform a unique dehydration pretreatment on the pearl sand before loading, and heat the sandwich layer with nitrogen for displacement treatment, greatly reducing the source of gas emissions.
Three, the process of negative pressure filling and positive pressure compacting for sand ensures the uniformity of the sandwiched pearlescent sand. The use of vibration rod compacting technology maximizes the filling amount of the pearlescent sand, guaranteeing the insulating effect of the sandwich.
Four: Utilizing a unique vacuum extraction process, significantly reduces the time required for vacuuming the inner tank and its sandwiched layers, ensuring that the vacuum level within the sandwich exceeds the national standards. Guarantees the vacuum level of the storage tank is3～5No reprocessing required within the year.
Appearance:
One, bending pipes are formed on CNC bending machines, ensuring precise geometric dimensions. By not using elbow joints, it significantly reduces pipeline resistance and enhances the aesthetics of the external piping system.
The paint used is from the world-renowned Jotun brand, with two coats of primer and two coats of topcoat, ensuring the longevity of the paint and the quality of the equipment's appearance.
Low-temperature Storage Tank Structure:
A low-temperature storage tank is a compact storage unit equipped with various accessories (valves, safety systems, etc.) for storing low-temperature liquids. The tank consists of a carbon steel vacuum shell and a pressure vessel inside it. It can operate under low to medium pressure as per actual design requirements. Explosion-proof plates and double safety valves provide protection for the tank in case of excess pressure. The safety relief device is designed to protect the internal pressure vessel and vacuum shell, and its use and type are governed by GB150 and the "Fixed Container Regulations." This includes a double safety relief valve and explosion-proof plate for the internal pressure vessel protection, as well as an explosion-proof cover for the vacuum shell (shell). The tank is designed and manufactured for safety, reliable operation, and durability (can operate without failure for many years). Strict adherence to proper safety and operational regulations is required when operating the tank.
High safety requirements. As the tank stores low-temperature liquids, in case of an accident, the refrigerated liquid would volatilize in large quantities, with the vaporization amount being approximately 300 times that of the original refrigerated state, forming an explosive gas cloud in the atmosphere. Therefore, specifications such as API and BS require tanks to be constructed with double-walled structures and employ containment concepts. In the event of leakage in the first layer, the second layer can completely contain the leaked liquid and evaporated gas, ensuring storage safety.
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