Resin tank

There are three main types of resin tanks,

1. Fiberglass without inner liner

2. Glass steel strip inner liner

3. Stainless steel tank body

Technical requirements

Tank body

1. It usually consists of four layers: inner surface layer, inner layer, strength layer, and outer surface layer. Other hierarchical structures can also be adopted according to requirements; The wall thickness of the tank is changed according to the design requirements.

2. The resin content of the inner surface layer and inner layer of the cylinder varies depending on the storage medium.

3. The cone angle of the inner wall exceeds 1 °

4. Under loading conditions, the allowable circumferential strain of the tank wall shall not exceed 0.1%

5. When the spiral winding angle is 80 °, the axial tensile strength of the fiber winding layer shall not be less than 15MPa

Head cover

1. The head of a vertical storage tank can be ellipsoidal, flat, or conical, and the upper and lower heads can also be combined in different forms. The head of the horizontal storage tank is elliptical

2. The strength layer of the head is mainly sprayed and hand pasted, with winding wrapping as a supplement: when laying surface felt, short cut primary color felt, and untwisted roving cloth, the interlayer joints should be staggered, with a width of not less than 60MM. The tower joint width is 30MM. The resin mass content is not less than 40%

3. When the vertical storage tank is on flat ground, the radius of the bottom corner should not be less than 38mm, and the thickness of the bottom thickening decreases and is tangent to the flat bottom. The minimum thickness of the corner reinforcement zone is the sum of the structural thickness of the cylinder and the head.

Support bracket

1. The number of saddle shaped supports for horizontal storage tanks shall not be less than two, and the saddles can also be made of steel, cast iron, concrete, or hand pasted fiberglass

2. The wrap angle of the saddle shall not be less than 120 ° The saddle arc matches the outer wall of the storage tank

3. The distance between any two saddles shall not exceed 1.5 times the nominal diameter of the cylinder

4. The flat bottom storage tank adopts a flat concrete foundation. Soft pad or 200MM thick sand cushion layer is placed on the support

5. The ellipsoidal bottom end storage tank can be supported by fiberglass or resin concrete legs The shape of the support leg seat and the glass cylinder cushion layer should match

6. Glass fiber reinforced plastic ring ribs or steel lifting ears can be added at the connection between the tank bottom and the support leg seat.

Strengthen assistance

1. Horizontal storage tanks should be reasonably selected for reinforcement according to the length to diameter ratio of the tank, and reinforcement can be installed inside or outside the tank. The saddle part should be equipped with thickened reinforcement, with a thickness of not less than 2/1 of the wall thickness and a width of not less than 1.3 times the width of the support.

2. The open edge of a vertical storage tank without a top cover should have horizontal reinforcing ribs.

3. Strengthen the ribs by alternately winding short cut felt and cloth on the cylinder, and then wrapping them with coarse yarn for compaction. The reinforcing ribs can also be made of composite materials of other materials.

Exhaust pipe and overflow pipe

1. The upper part of the storage tank should be equipped with an exhaust pipe for free communication with the atmosphere. The minimum diameter of the exhaust pipe should be larger than the diameter of the inlet and outlet pipes.

2. The storage tank should be equipped with an overflow pipe, whose diameter should be larger than the diameter of the feed pipe.

Anchor device

1. Storage tanks, especially parallel bottom tanks, must be equipped with anchoring devices fixed to the foundation during installation and operation.