Orifice plate flow meter belongs to the old ancestor of the meter. Because of its low price and easy installation, it has won the favor of customers. Therefore, the principle of itself and the limitations of the production process, after the use of the working environment becomes bad, there will be deformation, the following and Shunda flowmeter technology Xiaobian for this image, for everyone to do analysis and explanation, for reference: First, the reasons for the deformation of the orifice plate Orifice plate deformation is due to thermal expansion, the gap between the outer diameter of the orifice plate and the annulus disappears, the orifice plate can not expand to the outer diameter direction when it continues to expand, so under the effect of differential pressure on both sides of the orifice plate, produce the exit side convex Out of the deformation. When investigating the site where the plate is deformed, related clues are often found. 1. It is related to poor thermal insulation at throttling devices. The well-insulated throttle device did not leak. 2. It is related to the weather. The throttling device originally had no leakage phenomenon. Due to the cold weather, the northwest wind blows vigorously, causing leakage at the junction between the positive and negative ring chambers. 3. It is related to leakage at the junction of the positive and negative ring chambers. It was impossible to eliminate the leakage by tightening the bolts, so the throttling device was removed and the gasket was replaced, and then the orifice plate was found to be deformed. Correlating these related clues can lead to inferential analysis of the cause of the orifice plate deformation. When the throttling device is designed and calculated, the gap between the outer diameter of the orifice plate and the annulus is left large enough, assuming that the temperature of the orifice plate and the annulus is the same, but it is virtually impossible to be the same. The orifice plate is surrounded by the ring chamber and there is a high temperature. The fluid provides heat, so the temperature is high and it is fully expanded. The ring interior is in contact with the fluid, but the outer circle is in contact with the atmosphere, and the external environment temperature and other factors, so that the temperature drops very low, resulting in insufficient reserved clearance, causing the hole plate deformation. Orifice plate deformation is associated with leakage at the positive and negative ring chambers, if it is not due to damage to the gasket, it is because the gap between the positive and negative ring chambers is increased after the hole plate is deformed, and the gap between the gasket and the ring chamber occurs. Gap. Second, the hole plate deformation solution After finding the root cause of the deformation of the orifice plate, there is a simple and effective method for preventing the deformation of the orifice plate. That is, when designing and calculating, considering the fact that the temperature of the annular chamber may be much lower than that of the orifice plate, the gap is reasonably calculated. The temperature in the outdoor circle of the ring should not exceed 100°C. Therefore, it is necessary to fully communicate with the manufacturer when selecting a customer, taking into consideration all the adverse factors. Heshunda flowmeter manufacturers as speed-type meters, volumetric meters, differential pressure meters, area instrument professional manufacturers, has always insisted on research and development of new technologies and new products. Summing up the experience in production practice over the years, actively communicating with the domestic and international flow fields, striving to develop various flow measurement products and forming a scaled, systematic, and diversified production pattern. The main components of Shine Core Veneer Dryer is as follows:1.Drying system :the Veneer Dryer adopts the most scientific drying principle ,and the hot air in the hot air stove is injected directly into the upper and lower bellows of the machine by centrifugal blower. 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