Some knowledge points of Free-standing Chimney

There are two types of steel for making Free-standing Chimney, stainless steel and carbon steel. While both are made of steel, the difference is huge. Stainless steel industrial self-supporting chimneys have gradually replaced brick self-supporting chimneys. Due to its own characteristics, it has many advantages that brick self-supporting chimneys do not have.
Stainless steel can work safely for a long time at the temperature of -270C -400C, no matter in high temperature or low temperature, no harmful substances will be precipitated, and the material performance is quite stable. The stainless steel material is safe and non-toxic, non-corrosive, non-exudable, non-odorous, non-turbid, and will not cause secondary pollution to the water quality, and the hygiene and safety standards are fully guaranteed. If there are special corrosion requirements or external oxidation and corrosion resistance requirements, galvanizing on the stainless steel surface can also be selected to stabilize chemical properties, and coatings can be applied to beautify and prevent corrosion. Stainless steel has corrosion resistance, enhanced strength, steel deformation is not easy to crack and environmental protection, not easy to rust, and has good ductility and toughness. Suitable for harsh environments (humidity, acid and alkali, etc.).

To sum up, various industrial chimneys, such as Free-Standing Chimney, tower chimney, cluster chimney, including sleeve chimney, are all made of stainless steel.

Free-standing Chimney has no external auxiliary fixation, so certain techniques and calculations are required to ensure the safety of Modern Freestanding Fireplace. Today I will tell you about the easiest way to damage a self-supporting chimney: crosswind resonance. So how to reduce lateral wind vibration? What action should be taken? Let us share with you measures to reduce lateral wind vibration:

When it is judged that lateral wind vibration occurs and plays a controlling role, there are mainly two schemes to reduce lateral wind vibration. One design solution is to increase the cross-section to make the chimney meet the bearing capacity requirements, that is, to increase the diameter of the self-supporting chimney to make it more stable. However, this solution will increase operational difficulty and manufacturing costs, and is generally considered an inferior strategy.

Another solution is to adopt shock absorption measures, that is, to reduce resonance by adding or changing some devices, so as to protect the safety of Modern Freestanding Fireplace. We generally have two types of shock absorption:

First, set up a "wind shield ring" to eliminate the regular vortex shedding phenomenon through the wind shield ring, so as to achieve the effect of eliminating or reducing lateral wind vibration. Setting conditions and requirements of the windshield ring: 1. The form and size of the windshield ring, the thickness of the spiral plate is not less than 6mm, and the plate width is 0.1-0.12 times the outer diameter of the chimney. There are three spiral plates evenly distributed along the circumference, and the spiral pitch can be 5 times the outer diameter of the chimney. 2. The shape factor of Free-standing Chimney within the crushing air circle should be selected according to industry regulations. 3. The position of the windshield ring should be set within the height range of the top of the Modern Freestanding Fireplace.