Pressure gas storage tanks

Aluminum diving air tanks are high-performance air pressure tanks designed for diving activities, mainly used to store compressed air for divers to breathe underwater. These gas tanks are usually made of high-strength aluminum alloy, which is lightweight, corrosion-resistant and high-pressure resistant to withstand the rigors of the underwater environment. pressure cylinders are lightweight and portable, while their structural design is precisely calculated to ensure stability and safety under high pressure. Gas storage tanks are specially treated to prevent air contamination, ensuring that the air the diver breathes is pure and free of contamination. In addition, the aluminum diving air tanks can be customized according to user needs, and custom gas pressure tanks can meet the requirements of different diving depths, capacities and special purposes. Whether you are a professional diver or a hobbyist, air pressure tanks are a reliable choice for providing a long-lasting and safe air supply for underwater activities.

Design Features:

1. Lightweight design:  

   Aluminum air tanks are made of high-strength aluminum alloy material, which is lightweight and easy for divers to carry and operate, and at the same time reduces the burden of underwater activities.

2. corrosion resistance:  

   Aluminum alloy has good corrosion resistance, which can resist the erosion of seawater and humid environment and prolong the service life of the gas storage tank.

3. High pressure resistance:  

   The gas storage tanks are precisely designed and rigorously tested to withstand high-pressure environments (usually working pressure of 200-300 bar), ensuring safety in deep-water environments.

4. Humanized design:  

   The surface of the tank is usually treated with non-slip for easy grip, and equipped with an ergonomic strap system for easy carrying by divers.

5. Customizable:  

   According to the user's needs, the tanks can be customized with different capacities, pressure levels and appearance designs to meet the needs of different diving scenarios.

6. Safety:  

   The tanks are equipped with pressure relief valves (safety valves), which automatically release the gas when the pressure is too high to avoid the risk of explosion. Meanwhile, the tanks undergo strict quality testing to ensure their reliability and durability.

Components:

1. tank body:  

   The main part of the tank, made of high-strength aluminum alloy, is specially treated inside to ensure pure and pollution-free air.

2. valve system:  

   Includes the main valve and the standby valve, which are used to control the gas in and out. The main valve is usually equipped with a pressure gauge for real-time monitoring of air pressure in the tank.

3. pressure gauge:  

   Installed on the valve system to indicate the pressure of the gas in the tank to help divers know the amount of air remaining.

4. safety valve:  

   Used to automatically release the gas when the pressure inside the tank is too high, preventing the tank from being damaged by excessive pressure.

5. Harness system:  

   Consisting of comfortable shoulder straps and waist belt, it is easy for divers to carry the tank while reducing the burden during underwater activities.

6. non-slip coating:  

   The surface of the tank is usually coated with a non-slip material for easy grip and handling, especially in underwater environments.

7. Bottom protection ring:  

   The bottom of the tank is usually equipped with a rubber or plastic protective ring to prevent the tank from coming into direct contact with the ground and to minimize abrasion and impact damage.

 

The following are the major manufacturing processes for aluminum submersible air storage tanks:

1. Material Selection

   - High-strength aluminum alloys (such as 6061-T6 or 7075 aluminum alloy) are used, which have excellent strength-to-weight ratio, corrosion resistance and fatigue resistance.

   - Aluminum alloy materials are subject to strict quality testing to ensure that their chemical composition and mechanical properties meet the standards.

2. Molding process

   - Extrusion molding:  

     Aluminum alloy billet is initially formed into the basic shape of cylindrical can body through high temperature extrusion process.

   - Spin molding:  

     Aluminum alloy sheet is processed into a seamless tank through the spinning process to ensure uniform wall thickness and no welding seams, which improves the overall strength and safety.

3. Heat treatment

   - The formed tanks are heat treated (e.g. T6 heat treatment) to improve the strength and hardness of the aluminum alloy, and at the same time to eliminate internal stresses and enhance pressure resistance.

4. Inner wall treatment

   - Inner wall polishing:  

     The inner wall of the tank is precision polished to reduce surface roughness and prevent air pollution and corrosion.

   - Inner wall coating:  

     Some tanks are coated with special coatings (e.g. epoxy resin coating) on the inner wall to further enhance corrosion resistance and air purity.

5. Tank processing

   - Turning:  

     The opening part of the tank is precision turned to ensure the dimensional accuracy and sealing of the valve interface.

   - Threading:  

     Precision threads are machined in the tank opening for mounting the valve system.

6. Surface treatment   

- Anodizing:  

     The surface of the tank is anodized to form a dense oxide film to improve corrosion resistance, abrasion resistance and aesthetics.

   - Sandblasting treatment:  

     The surface of some gas storage tanks will be sandblasted to increase the surface roughness for subsequent painting or anti-skid treatment.

   - Painting:  

     The surface of the tank is sprayed with anti-corrosion coating or anti-skid coating to enhance durability and maneuverability.

7. Valve system installation

   - Install a high precision valve system at the tank opening, including main valve, pressure gauge and safety valve.

   - The valve system is subject to rigorous air tightness testing to ensure no leakage.

8. Pressure test

   - Water pressure test:  

     Fill the tank with water and pressurize it to 1.5 times of the rated pressure to detect any deformation or leakage of the tank.

   - Pneumatic test:  

     Fill the tank with high pressure gas to test its sealing and pressure resistance.

9. Quality testing

   - Ultrasonic testing:  

     Use ultrasonic testing equipment to check for cracks, bubbles or other defects inside the tank.

   - X-ray inspection:  

     X-ray scanning of the tank to ensure that the internal structure is free of defects.

   - Appearance Inspection:  

     Inspect the surface of the tank for scratches, dents or other cosmetic defects.

10. Certification and labeling

   - The gas storage tank needs to be certified by relevant international standards (e.g., CE, DOT, or EN standards), and labeled with information such as pressure level, capacity, and date of manufacture on the tank.