1、 Metal storage tanks such as carbon steel tanks, stainless steel tanks, aluminum tanks, etc. Non metallic storage tanks, including plastic tanks, ceramic tanks, fiberglass tanks, etc. Metal non-metal composite tanks, steel lined polytetrafluoroethylene tanks, steel lined polyethylene tanks, steel lined polyolefin tanks, steel lined rubber tanks, etc. are included in 1 The welding free plastic (polyethylene) storage and transportation equipment series is non-metallic plastic cans: this series of products is made of our company's unique formula modified polyethylene (PE) as raw material, using a special one-time integral molding process (rolling molding process). This plastic storage tank does not use any additives or plastic fillers during the production process. Completely processed using the company's unique formula, with the addition of polyethylene (PE) material, from the tank body to the inlet and outlet, manhole, flange, etc., all welded without welding joints. The storage tank also has no welded joints, no leakage, non-toxic, light weight, aging resistance, impact resistance and corrosion resistance. Its price is lower than stainless steel tanks, ordinary FRP tanks, polypropylene tanks, and PVC tanks, and it has a longer service life under natural conditions. 2. Steel lined plastic (polyethylene) storage and transportation containers and reaction equipment series are metal and non-metallic composite containers: steel lined plastic (tortoise shell lined with steel, mesh and plastic) is the essence of steel plastic composite products. The steel mesh (turtle shell) is welded onto the surface of the steel body, and polyethylene is used as the raw material to form a whole on the surface of the steel body using the spinning plastic process (rotational molding process). Due to the integration of steel mesh (turtle shell) and polyethylene, the steel mesh is welded to the surface of the steel body, making it difficult for polyethylene to separate from the surface of the steel body. Therefore, it is a very good corrosion-resistant product. The inner surface of the product is flat, smooth, and firm. Compared with traditional steel lined plastic plate storage tanks and steel lined fiberglass storage tanks, it has the advantages of corrosion resistance, non leakage, non peeling, wear resistance, and long service life. It is an ideal storage and transportation container for transporting corrosive liquids. Suitable for automotive transport tanks, pipelines, low-pressure tanks, vacuum tanks, reaction vessels, fermentation tanks, separation tanks below 100 ℃, sub exchange towers, acid washing tanks, settling tanks, neutralization tanks, crystallization tanks, concentration tanks, electroplating tanks, acid washing tanks, etc.

Tank maintenance and inspection

In order to ensure the safety production and equipment operation of enterprises, improve the service life of equipment and labor production efficiency, it is necessary to conduct regular inspections and maintenance of operating mechanical equipment to prevent the impact of production machinery failures or personnel injuries caused by mechanical accidents. We have developed practical production, safety operation procedures, and safety maintenance management systems through research. The maintenance cycle for storage tanks is generally 60-120 days for medium repairs and 12 months for major repairs. Intermediate maintenance: Eliminate operation, discharge, dripping, cleaning or replacement of liquid level gauges, repair or replace inlet, outlet, and drain valves, clear and clean cooling water coils. Inspect and repair the exhaust flame arrester of the safety valve. Repair the anti-corrosion layer and insulation layer. Overhaul: including the repair of the interior of the tank body in medium maintenance projects, as well as the repair or replacement of the cylinder body in the event of cracks, severe corrosion, and other conditions. Polymer composite materials can be used for repair. According to internal and external inspection requirements, after repairing or replacing the oil cylinder joint, a leakage test or hydrostatic test should be conducted. Apart from embroidery and insulation. Handle other issues discovered during the internal and external inspection of the fuel tank. The maintenance methods and quality standards for tank body repair, such as drilling, welding, and replacing cylinder body joints, shall comply with the requirements of specifications and other relevant standards. The specific construction plan shall be formulated and approved by the technical department of our unit. The materials used for repair (base metal, welding rod, welding wire, flux, etc.) and valves must have quality certificates. When using old materials, valves, and fasteners, they must be inspected and qualified before use. The assembly fasteners of the storage tank should be coated with lubricating material and the bolts should be tightened diagonally. Non metallic gaskets are generally not reusable. When selecting gaskets, the corrosiveness of the medium should be considered. After repair, anti-corrosion and insulation work can only be carried out after passing the inspection.

Repair methods and quality standards for unqualified storage tanks in use: 1 Grinding method to eliminate defects 2 Welding or repairing 3. Replacing the barrel part 4 Mining and repairing 5 The problem of quick insertion cannot be solved by traditional on-site welding, and there is a great deal of danger involved. Due to the long construction period and high labor intensity of workers, using replacement media for welding repairs can cause significant downtime losses. According to different equipment and operating conditions, as well as different forms of corrosion and leakage, Meijiahua Technology in the United States can protect equipment quickly, simply, and effectively for different equipment technology products. Especially due to the comprehensive performance of polymer composite materials, such as chemical corrosion resistance and adhesion, it can avoid the adverse effects and repairs of traditional welding, and make the service life of repaired equipment longer than new equipment, fundamentally solving the causes of equipment corrosion and leakage, helping enterprises improve equipment management level, reduce maintenance costs, and enhance competitiveness.

Safety measures for maintenance and repair 1 Storage tanks for flammable gases and liquids should be equipped with necessary fire-fighting equipment. Smoking and open flames are strictly prohibited inside the tank, and sources of ignition must be brought into the tank area. 2. Storage tanks storing flammable, explosive, toxic, corrosive and other media shall strictly comply with relevant regulations on hazardous material management. Before the maintenance of the storage tank, the power supply of the electrical equipment related to the tank must be cut off and the equipment handover procedures must be handled. After the medium in the tank is used up, the inlet and outlet valves should be closed or blind plates should be added to block the pipelines and equipment connected to the tank, and clear isolation signs should be set up. 5. Storage tanks containing flammable, corrosive, toxic, and suffocating media must be replaced, neutralized, disinfected, cleaned, and analyzed and inspected after treatment. The analysis results should comply with the requirements of relevant specifications and standards. It is strictly prohibited to use air as a substitute for flammable media. 6. A work permit must be obtained for working inside the tank. If the operation is interrupted for a long time due to some reason, a new 'Tank Operation Permit' should be obtained. 7. Take a sample for analysis 30 minutes before entering the tank, with an oxygen content of 18-23% (volume ratio). When entering the tank to clean toxic and corrosive residues, personal protective equipment should be worn. 9. Scaffolds and lifting devices must be firm and reliable. It is strictly prohibited to throw materials and tools inward or outward during the operation process to ensure safe operation. 10. The lighting inside the tank should use no more than 24 explosion-proof lamps. When hot work is required inside the tank, a hot work permit must be obtained. 12. The operation inside the tank must be monitored and reliable contact measures must be taken. After the completion of the project, maintenance personnel and supervisors will inspect the inside and outside of the fuel tank together. After confirming the accuracy, the supervisor needs to sign the operation certificate inside the tank before sealing the manhole. 14. When discharging water after pressure testing, it is necessary to connect to the atmosphere to prevent vacuuming.