Overview of Stainless Steel Water Tank

Overview of Stainless Steel Water Tank Stainless steel water tank is made of stainless steel plate, color steel plate, etc. as the surface layer, polyurethane foam or mineral wool as the inner core layer. Through optimized combination, the inner and outer layers achieve good insulation effect together. In addition, it is fixed with aluminum or stainless angle steel to make the appearance of the water tank more beautiful and enhance the three-dimensional beauty. The inner layer medium can be made of polyurethane foam, rock wool, mineral wool (glass wool), rubber, etc., while the outer layer can be made of stainless steel plate, galvanized plate, color steel plate, etc. The temperature of the insulated water tank should be reduced to within 10 degrees Celsius (within 5 degrees Celsius for polyurethane foam) within 24 hours at room temperature, without affecting the quality of the water in the tank. It is suitable for square, circular, etc. It is easy to assemble, has excellent performance, and can be used both hot and cold. Humanized design, with complete specifications ranging from 1 ton to 100 tons, can be customized according to customer needs, site limitations, and special sizes.

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Stainless steel water tank stamping plate

Stainless steel water tank stamping plate is the basic unit for welding stainless steel water tanks. The stainless steel water tank is designed according to the GB02 S101 atlas standard, and is normally made of stamped plates and stainless steel flat plates for 1000x1000mm, 1000x500mm, and 500x500mm water tanks. The water tank stamping plate is made of high-performance stainless steel plates such as 304-2B, 316L, 444, etc., which are cut, punched, pressed, folded and other processes. All indicators comply with industry related water quality standards and food hygiene standards. Stainless steel water tank is a specialized water supply and storage equipment used in construction engineering, water supply system, fire protection engineering, environmental protection engineering, HVAC engineering, hot water engineering, water treatment engineering, air conditioning and refrigeration engineering, and mechanical and electrical installation engineering.

Installation process of stainless steel water tank

Welding of water tank base (electric welding machine) → Rust prevention and anti-corrosion treatment of water tank bottom → Welding of standard composite plate (argon arc welding machine) → Leak detection of composite plate welds → Bottom plate splicing (argon arc welding machine) → On site assembly of the box → Welding of internal reinforcement ribs of the box (argon arc welding machine) → Splicing of box cover plate (argon arc welding machine) → Leak detection of water tank welds → Opening of various functional holes (signal holes, water temperature probe holes, etc.) according to user requirements → Leak detection of various functional holes → Production of internal maintenance ladder → Cleaning of water tank → Inspection of water tank → Qualified handling of storage (or handover): If the acceptance is not qualified, rework will be carried out before inspection.

Requirements for stainless steel water tank operation

1. According to the design requirements of the water tank specifications and models, prefabricated water tank molded block boards are used in the factory, with lines drawn. The drawn boards are then sent to a shearing machine to be cut into 106 × 106cm blocks After cutting the plates, cut four more corners, each corner cut into 90. The corners are then sent to a hydraulic press for molding into concave convex plates of 100 × 100cm and 50 × 50cm, with a 90 fold flange on each plate. Right angle and 45. Turn the corners and weld the four corners using argon arc welding.

2. After the materials enter the site, the molded plates are first assembled and combined using a combination of argon arc welding and electric welding processes. Welding is carried out according to the size of the water tank, length, width, and height. The molded plates are combined together to form several large plate surfaces of the water tank or the pressure blocks are divided into several pieces according to the length, width, or height of the water tank and welded together. Then, layer by layer, they are welded to the top of the water tank. The operation is determined according to the construction site.

3. After assembling and combining several large board surfaces, preparations should be made for welding the bottom of the box. When welding the bottom plate of the water tank, the size of the bottom plate should be adjusted first, and then the bottom plate should be laid on the foundation of the water tank for welding. After welding the bottom plate, the weld seam should be inspected by flame oil or visual inspection to prevent virtual welding, leakage welding, detachment and other phenomena.

4. After the bottom plate is welded, the wall panel and bottom plate are welded. Welding is done by first stacking one side at a time on the bottom plate of the water tank. After the four walls are stacked, the four corners of the water tank are pressed 45 degrees. Adjust the connection by pressing the edge, and the relative angle of the ruler should generally not exceed 2mm. It is required to be in a straight line, and argon arc welding is required for the four corners. The connection between the bottom and the wall should be 90 degrees. The right angle is welded by electric welding.

5. After welding the bottom of the water tank and the wall, proceed with welding the top and wall, with the edges required to be basically on a horizontal line. The manhole of the water tank is welded at the designated position according to customer requirements, usually located near the floating ball of the inlet hole.

6. After welding the water tank body, open the inlet, outlet, overflow, sewage, and fire holes, and then weld the water tank ladder.

7. The internal reinforcement of the box is made of stainless steel plate, which is folded into 90 degrees by a folding machine. Right angle angle steel and channel steel are welded inside the water tank, mainly to strengthen and prevent deformation of the water tank. The channel steel reinforcement is used to weld the support between the bottom and top of the water tank. The reinforcement welding is carried out in a layer 50cm above the bottom, with a longitudinal and transverse spacing of 1m × 1m. The second layer is 50cm away from the layer, and the height and spacing are the same. Weld angle steel between walls, walls and baseboards, and walls and ceilings.

8. After welding the water tank, perform weld seam and oil inspection. Apply kerosene to the gaps between the outer plates of the water tank, and then visually inspect the weld seam inside the water tank to ensure that the water tank does not leak.

9. After oil inspection, if there is no leakage in the water tank, clean up the welding slag and debris inside the water tank, and check whether there is any virtual welding, leakage welding, or detachment in the welding parts.

10. Remove welding spots. Apply a layer of cleaning agent on the weld seam first, wait for 15-20 minutes, and then rinse with clean water while rinsing until the weld spot is removed.

11. Water pressure test. After welding the water tank and completing all tasks, conduct a pressure test by injecting water into the tank. Check the welds around the tank for any leakage or seepage. If not, drain the water from the tank and clean it thoroughly to ensure cleanliness and hygiene.

Technical requirements for stainless steel water tanks

One appearance
The exterior of the water tank should be clean and smooth, without sharp edges, burrs, or obvious collision defects. The weld seam should be flat and coated with a decorative covering layer.

II material
The box body, internal ladder and other components in contact with the water tank should be made of stainless steel material (SUS304) that meets the hygiene requirements of the "Hygienic and Safety Evaluation Specification for Drinking Water Transmission and Distribution Equipment and Protective Materials" (2001).

III structure

1. The water tank should have an easy to clean inlet hole, with a square inlet size of not less than 500mm × 500mm and a circular inlet diameter of not less than 400mm. The water tank cover should be firmly placed on the inlet hole of the water tank. When the effective volume is greater than (or equal to) 4m3, internal and external ladders should be added.

2. Effective volume v (m3): The effective volume of the above water tanks should not be less than 95% of the nominal volume. After subtracting 150mm from the top of the tank, the calculated volume is the effective volume.

3. Physical properties: Stainless steel welding should be free of defects such as burning, cold cracking, leakage, and virtual welding, and the weld seam should be uniform and consistent. The weld strength is greater than or equal to 500Mpa. 4. Water permeability: The water tank injected with water is not allowed to have water seepage.

5. Sealing: The incoming water tank is not allowed to have any leakage.

6. Stiffness: The water tank filled with water shall not cause significant plastic deformation of the water tank.

7. Sanitary water quality in the water tank: The water quality in the water tank should comply with the provisions of the "Hygienic and Safety Evaluation Specification for Drinking Water Transmission and Distribution Equipment and Protective Materials" (2001).

4 usage

Close the water outlet and sewage outlet, open the water inlet to inject the liquid to be stored; After filling, close the water inlet. Open the water outlet when needed. Regularly flush the inside of the water tank during use, open the drain outlet to remove impurities, and ensure clean water quality. Material of bracket: Q235 Assembly requirements: Reasonable design structure, stable and firm.