Application of spacing column in spiral plate heat exchanger
The application of spacing column in spiral plate heat exchanger is, simply speaking, refers to the small cylinder or cuboid welded on the spiral plate. The function of spacing column in spiral plate heat exchanger is to keep the spacing of the spiral plate to one. At this time, the rigidity, stability and strength of the spiral plate can be improved.
Most of the spiral plate heat exchanger manufacturers use the fixed distance column is made of the car, because the different center of the car caused by the beating of its section center residual boss, in the spiral winding plate surface damage is very large, and reduce the pressure capacity of the cylinder body. Murphy adopted the blanking and shaping process to effectively solve the problem and greatly improve the production efficiency.
When it comes to spiral plate heat exchanger equipment, we should pay attention to the middle of Japan and Sweden, carbon steel distance column extruded by wire, the surface after phosphating treatment, so more smooth. The connection between the fixed distance column and the spiral plate was made by contact welding technology, and the evaluation experiment was carried out. The lower end of the spacer column is in contact with the helical plate, which increases the stability of contact. At the bottom of the tray is a convex hull formed by molten metal when the spacer column contacts the helical plate.
Spiral plate heat exchanger equipment used by the distance column this time used is an equilateral triangle arrangement, the distance between them is related to the design pressure. If the pressure is small, the spacing can be larger, whereas if the pressure is large, the spacing can be smaller. Commonly used spacing specifications are, 100*200, 150*150, 100*100 and 80*80. The spacing column itself is usually a cylinder of the same diameter and height, and the spacing column on a spiral plate is of the same specification. The line position deviation of the spacing column is ±2.0mm, so the spacing between the center of the spacing column and the edge of the plate weld has to be less than 20mm.
The connection between the spaced column and the helical plate in the helical plate heat exchanger equipment shall be two point symmetric spot welding (two point spot welding along the helical plate length or width). However, the phenomena caused by the spot welding such as edge bite, weak spot welding and burning through steel plate are still the main reasons for the leakage in the screw body. Therefore, attention should be paid to the arc starting or arc closing during the spot welding of the distance fixed column. Attention should be paid to the circumferential operation of the distance fixed column.
Most of the spiral plate heat exchanger manufacturers use the fixed distance column is made of the car, because the different center of the car caused by the beating of its section center residual boss, in the spiral winding plate surface damage is very large, and reduce the pressure capacity of the cylinder body. Murphy adopted the blanking and shaping process to effectively solve the problem and greatly improve the production efficiency.
When it comes to spiral plate heat exchanger equipment, we should pay attention to the middle of Japan and Sweden, carbon steel distance column extruded by wire, the surface after phosphating treatment, so more smooth. The connection between the fixed distance column and the spiral plate was made by contact welding technology, and the evaluation experiment was carried out. The lower end of the spacer column is in contact with the helical plate, which increases the stability of contact. At the bottom of the tray is a convex hull formed by molten metal when the spacer column contacts the helical plate.
Spiral plate heat exchanger equipment used by the distance column this time used is an equilateral triangle arrangement, the distance between them is related to the design pressure. If the pressure is small, the spacing can be larger, whereas if the pressure is large, the spacing can be smaller. Commonly used spacing specifications are, 100*200, 150*150, 100*100 and 80*80. The spacing column itself is usually a cylinder of the same diameter and height, and the spacing column on a spiral plate is of the same specification. The line position deviation of the spacing column is ±2.0mm, so the spacing between the center of the spacing column and the edge of the plate weld has to be less than 20mm.
The connection between the spaced column and the helical plate in the helical plate heat exchanger equipment shall be two point symmetric spot welding (two point spot welding along the helical plate length or width). However, the phenomena caused by the spot welding such as edge bite, weak spot welding and burning through steel plate are still the main reasons for the leakage in the screw body. Therefore, attention should be paid to the arc starting or arc closing during the spot welding of the distance fixed column. Attention should be paid to the circumferential operation of the distance fixed column.
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