In industrial automation and fluid control system, explosion-proof servo valve, as a key control element with high precision and quick response, is widely used in flammable and explosive environments such as petroleum, chemical industry, natural gas and mines. Because of the particularity of its working environment, it is particularly important to ensure the safe operation of explosion-proof servo valve. This paper will discuss how to ensure the safe operation of explosion-proof servo valve from the aspects of installation, use and maintenance.
First of all, scientific selection and standardized installation are the basis to ensure the safe operation of explosion-proof servo valves. When selecting the explosion-proof servo valve, we must choose products that meet the explosion-proof grade (such as Ex d and Ex e) according to the actual working conditions, and ensure that their electrical parameters, flow characteristics, working pressure and other indicators meet the system requirements. In addition, the installation process should be carried out in strict accordance with the installation manual
provided by the manufacturer to avoid problems such as poor sealing, leakage or unstable electrical connection caused by improper installation. At the same time, ensure that the installation environment is well ventilated and away from high temperature and corrosive substances.
Secondly, standardized operation and regular inspection are the keys to maintain the stable operation of the explosion-proof servo valve. Operators should receive professional training and be familiar with the working principle and operating procedures of servo valves to avoid equipment failure or safety accidents caused by misoperation. In daily operation, the control signal, feedback signal, pressure response and other parameters of the servo valve should be tested regularly, and the operation data should be recorded so as to find the abnormality in time. In case of abnormal conditions such as slow response, leakage, vibration, etc., stop the machine immediately to check and troubleshoot.
Thirdly, strengthening maintenance is an important means to prolong the service life of explosion-proof servo valve and ensure safe operation. A scientific maintenance plan should be made and the internal components of the servo valve should be cleaned regularly to prevent impurities from blocking or wearing the valve core. The cleanliness of hydraulic oil or gas medium should reach the standard to avoid pollutants entering the valve body and causing damage. At the same time, key components such as seals and electromagnetic coils should be replaced regularly to prevent leakage or failure caused by aging.
Finally, the establishment of a sound safety management system is also an indispensable part. Enterprises should establish a sound equipment management system, clarify the division of responsibilities, organize regular safety training and emergency drills, and improve employees’ safety awareness and ability to deal with emergencies. At the same time, the servo valve control system should be equipped with necessary protection devices, such as overvoltage protection, power-off protection, fault alarm, etc., to improve the overall safety level of the system.
To sum up, the safe operation of explosion-proof servo valves depends not only on high-quality products themselves, but also on scientific installation, standardized operation, strict maintenance and perfect safety management. Only multi-party cooperation and systematic management can ensure the stable and reliable
operation of explosion-proof servo valve in dangerous environment and ensure production safety and personnel safety.