How to select proper electric butterfly valve
At the beginning of contact with the electric butterfly valve, there seems to be a veil over its role, performance and application fields, and all aspects of its understanding are vague. It is not only very difficult but also has an incalculable cost risk to choose an electric butterfly valve that meets your own needs based on your own strength and experience, Not only can the electric butterfly valve not give full play to its performance, but also it may cause a series of subsequent problems or even failures due to one component.
The selection of proper electric butterfly valve mainly includes the following two situations:
1、 Replace damaged electric butterfly valve under existing conditions
Under this condition, replacing the electric butterfly valve is very simple. If you are satisfied with the product, you only need to provide the brand and model of the damaged electric butterfly valve to the brand. Different brands have different models, but they will produce the same kind of products that can be replaced each other. If there are other requirements for the damaged electric butterfly valve, it is necessary to propose to the brand, and I believe that it is also easy to find suitable products.
Product model: JBF325/160-1
II In order to improve the production equipment and modify the added electric butterfly valve, the steps to select the electric butterfly valve are as follows:
1. It is necessary to evaluate the production site to see if it has the conditions for modification. First, it is necessary to ensure sufficient space for use, including the position width and installation height. In addition, the greater the load, the larger the position to be reserved. The appropriate positions include: no need to contact open flames, can avoid contact with sharp tools, etc. If the site environment is evaluated, fully understand the site environment, If there is a comparative end of the working conditions, such as high temperature, low temperature, acid-base and other environments, you need to contact professionals to ask for professional advice, which is very particular about the level of professionals. From my understanding, at least I know that the professional level of the customer service staff of Shanghai Dongfeng is very good and patient.
2. Judge the load of the required electric butterfly valve. At present, the bearing capacity of the domestic electric butterfly valve is very strong. Take Shanghai Dongfeng as an example. The single bearing capacity of the electric butterfly valve of Shanghai Dongfeng can be up to 15 tons. There may be differences between different brands. When considering the bearing capacity, it is better to distribute it as evenly as possible. Taking the 15 ton bearing capacity as an example, if the space conditions can be met, it is better to choose five 3 ton electric butterfly valves rather than one 15 ton electric butterfly valve. The bearing capacity is evenly distributed to prevent eccentric load
Operating principle of electric butterfly valve - locking system and unlocking system of
1. If the locking system is not connected with the air source to control the height or there is no air valve device, it is called the locking system. The system uses a fixed amount of gas as the elastic medium. A certain amount of gas is blocked in the system, and the amount of gas remains unchanged under pressure and rebound.
2. Unlocked system of
3. It is connected to the air source through height control or other air valve devices, which is called the unlocked system. The same volume can be maintained at the design control height, whether at rest or under pressure. Now this kind of system is commonly used. On the premise that the height valve is fixed, the load force and elastic coefficient change with the pressure of the fixed gas. In this system, the additional pressure gas can maintain the height, that is, the negative load is changing. In this way, when the load changes, because the volume of the system can be kept unchanged, the natural shock is more fixed than the locking system. In a word, the natural shock frequency of the system will not change when the load changes.