Measures to deal with the excessive pressure drop of the tube condenser
Although tubular condensers have many advantages over conventional condensing equipment, they are also prone to problems such as excessive pressure drops, which in turn can lead to a series of adverse consequences. It is not difficult to solve this problem of tubular condensers, but it is only comprehensively managed from multiple aspects. On the one hand, when using circulating water, especially secondary circulating water, softened soft water must be used as the secondary circulating water of the tube condenser to control the impurity content in the water to not exceed the standard to ensure its purity.
On the other hand, in view of the fact that the tube is a condenser applied to a central heating system, a method of replenishing water to the secondary can be used. It is also important to regularly remove dirt or scum from the tube condenser flow path. When cleaning the scale on the surface of the tube condenser, you can use sulfamate solution, nitrate solution or nitric acid solution containing urotrophin, aniline or thiocyanate as the cleaning solution. The cleaning temperature is controlled at 40 ° C-60 ° C, not too high or too low.
If chemical immersion cleaning is performed without disassembling the tubular condenser, please open the refrigerant inlet and outlet first when installing the equipment, or install a cleaning port on the inlet and outlet of the medium for cleaning. Liquid is injected into the device However, it is much easier to remove and clean. Soak the plate of the tubular condenser in the cleaning solution for 30 minutes, then gently grind the scale with a soft brush, and then clean with water. Avoid cleaning the plates during the cleaning process. Rubber mat.
Proper selection of the welding process of the condenser is an important factor in ensuring quality. In addition to considering the choice of welding method, welding rod, welding location, transportation conditions, etc., pre-weld and post-weld heat treatment should also be considered. Preheating, temperature and method should be determined according to the nature of the metal material and preheating conditions. In order to prevent welding deformation and reduce residual stress, both ends of each pipe are spot welded in turn, and each pipe needs to be spot welded uniformly before welding. The number of divided regions depends on the diameter of the tube sheet, and the large tube sheet can be divided into several regions.