Magnetic Level Indicator is a level measurement product developed and produced in accordance with the magnetic level indicator standard (HG/T21584-95) promulgated by the Ministry of Chemical Industry. It is mainly used in various towers, tanks, tanks, and ball types. Monitoring liquid levels in equipment such as vessels and boilers. According to my country’s national standard GB/T 25153-2010 “Magnetic Float Level Gauge for Chemical Pressure Vessels”, the protection level of the display panel of the magnetic flap level gauge should not be lower than IP54, that is, as long as the magnetic flap liquid level can be The protection level of the position gauge is IP54, which can meet the national standard. However, affected by the complex outdoor working conditions, the magnetic flap level gauge with a protection level of only IP54 is eroded by dust and rain for a long time, and the display panel of the magnetic flap level gauge is prone to be blurred, which makes it difficult or impossible for the staff to be accurate. Identify the liquid level situation. In addition, the dust and impurities that invade the main tube and display panel of the magnetic flap level gauge will also cause the flap to be turned over difficult or even impossible to turn over, bringing potential hidden dangers to safe production. If the protection level of the magnetic flap level gauge can be increased to IP66/67, the above situation can be avoided.Next, let’s talk about the specific methods for increasing the protection level of the magnetic flap level gauge to IP66/67. Generally speaking, to increase the protection level of the magnetic flap level gauge to IP66/67, the following three points need to be paid attention to.1. Optimize the design structure of the magnetic flap level gauge To optimize the design structure of the magnetic flap level gauge, the joint surface of the magnetic flap level must first be reduced. The joint surface is the weakest link in the dust-proof and waterproof design of the product structure. If the joint surface is too much, it will undoubtedly cause a large amount of dust, water vapor and impurities in the production to enter the product through the joint surface. Therefore, reducing the joint surface of the product as much as possible is an effective method to improve the protection level. Secondly, it is necessary to ensure that the tolerance of the magnetic flap level gauge meets the requirements, so that the tolerance is neither too large nor too small. If the tolerance is too large, there will be gaps in the product, allowing dust and water vapor to enter the instrument; and too small a tolerance will cause excessive stress on the contact parts, which will cause product deformation to a certain extent, and even gaps. Therefore, in the manufacturing process, the tolerance should be as moderate as possible, not too large or too small.2. Improve the sealing auxiliary process of the magnetic flap level gauge. The sealing auxiliary process of the magnetic flap level gauge mainly includes sealing ring, sealant, interference fit, waterproof and breathable membrane, welding, etc. Different sealing auxiliary materials have different sealing effects. The material characteristics such as the working temperature and strength (yield strength) of the sealing auxiliary materials have an important influence on the sealing effect. In addition, special attention should be paid to the place where there is bolt connection. The design of the mounting screw hole on the outside of the product is a big problem. It is necessary to avoid direct penetration with the inside of the product or penetration with the hole inside the product. Therefore, when using a sealing ring or sealant for sealing, you must choose a sealing auxiliary material that meets the requirements of the working condition. Improving the structural design and the sealing auxiliary process is a common and effective method to improve the protection level of the magnetic flap level gauge. The Flap-11 series magnetic flap level gauge independently developed and produced by Huikeda with an innovative concept is used in The application in practice also fully proved the effectiveness of this method.
3. Other methods If the working conditions in production are bad and the sealing effect of the magnetic flap level gauge needs to be better, so that the magnetic flap level gauge can reach a higher level of protection, it can be sealed by using glass and supplemented by The methods of vacuuming and nitrogen filling have been improved in a targeted manner.
Post time: 21-09-21