xindacool Refrigeration Equipment Source Factory | Key Points for Foundation Design of Refrigeration Units, including Load, Elevation, Drainage, and Anti-Vibration Supports. Pre-construction Precautions for Foundation Core Conclusion: Inappropriate foundation design can amplify vibrations, cause water accumulation and corrosion of equipment, and ensure that the equipment weight, support points, and drainage conditions are confirmed in the early stage to avoid later renovation and rework. Common Mistakes in Foundation Design for Refrigeration Units: Insufficient foundation load-bearing capacity, too low foundation height causing water accumulation and soaking the base, misalignment of support points with the base hole positions of the equipment, failure to make a drainage slope, insufficient stiffness of the steel structure platform leading to resonance. The operating weight of the large evaporative cold unit includes the equipment's own weight + the weight of the pipeline medium, and the foundation load needs to be increased by 1.2-1.5 times for a safety factor. If the foundation stiffness is insufficient, the operating vibration will be amplified, and the risk of fatigue cracking of pipeline welds will increase by 65%. It is recommended that the concrete foundation be at least 150mm above the ground to prevent water from rain and cleaning from soaking the equipment base; the surface of the foundation should have a 2-3‰ outward drainage slope, and drainage ditches should be set around. The support points of the foundation must correspond one-to-one with the base feet of the unit, and it is prohibited for the equipment base to be suspended and cross-over. For steel structure floor installation, not only static load calculations are required, but also dynamic vibration load calculations are necessary to avoid resonance caused by the coincidence of the steel structure natural frequency and the unit weight. xindacool provides equipment foundation drawings at the same time of shipment, including the operating weight of the entire unit, support coordinates, external dimensions, and load distribution. During the construction phase, the drawings should be strictly followed, and the support positions should not be randomly changed. The anti-vibration components should be installed between the foundation and the equipment base, and should not be buried in the concrete. For outdoor projects in coastal areas, the concrete foundation can be coated with anti-corrosion coating to slow down the weathering caused by the saline environment. After the foundation is completed, the levelness should be rechecked, and the horizontal deviation of the entire unit should be controlled within ≤2‰. Horizontal inclination will affect the oil level balance inside the compressor and aggravate internal wear. FAQ 1. How much should the concrete foundation be raised above the ground? It is recommended to be ≥ 150mm to prevent water accumulation and soaking. 2. How is the foundation load determined? The total operating weight should be multiplied by a safety factor of 1.2 - 1.5 to ensure safety. 3. How does unevenness of the foundation affect the compressor? It affects the internal oil level and intensifies wear. 4. Is it sufficient to calculate the static load of the steel structure floor? It is not enough; vibration and dynamic loads must also be considered. 5. Does the foundation need to have a drainage slope? Yes, it should be inclined by 2 - 3‰ outward and be accompanied by a drainage ditch. 6. Can the shock-absorbing pads be embedded in the concrete? No, the shock-absorbing components must be exposed for easy replacement.
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