Views: 154 Author: Site Editor Publish Time: 2022-10-04 Origin: Site
The noise of the solenoid valve usually makes people feel irritable, but it is worth noting that the solenoid valve that constantly emits noise also warns the maintenance personnel that there are some faults inside the cylinder. It is undeniable that even well-functioning valves sometimes produce some noise, which means that maintenance personnel need to accurately identify whether the noise represents a fault in the control circuit or pipeline. The following are the most common valve noise categories, which can help you better identify them.
The solenoid valve in operation may be accompanied by some vibration-type noise. In some solenoid valves that use alternating current, some slight noises and vibrations are normal. This is because the magnetic field changes when the alternating current passes through the valve armature. Most solenoid valves include a light-shielding ring, usually made of copper, to buffer the magnetic energy generated by the current flowing through the solenoid valve. They smooth the changing intensity of the magnetic field by storing magnetic energy when the current reaches its peak and releasing magnetic energy when the alternating current is close to zero.
If you find that the valve vibration amplitude is too large during a certain period of time, it may mean that the valve has some failures. One of the possible reasons is insufficient pressure. This may be caused by factors such as inaccurate control signals, malfunctions in the control system, and wiring problems. Insufficient pressure of the solenoid valve can cause serious problems. Simply put, the solenoid valve can never be fully opened and will only oscillate back and forth. The most convenient method is to detect the specific problems of the voltage of the two stages by energizing the solenoids, and then repair them.
Problems with parts
Another problem with valve noise may be loose or missing parts. Generally, if the parts are loose, the noise of the valve is usually trembling. You need to verify according to the operation manual whether all the parts are installed in accordance with the rules, and whether any parts are not tightened. If some components are missing, you can find suitable spare parts in the dealer catalog.
Having said that insufficient pressure can cause valve failure, too much pressure can also cause such problems. Excessive voltage across the solenoid valve may cause the gas to flow too fast, and the valve will make a buzzing sound. In order to avoid this problem, you need to choose those that can allow lower flow rates when buying valves.
Foreign body accumulation
Foreign matter such as dirt can also affect the operation of the valve. Many solenoid valves have a harsh working environment, often working at a temperature much higher than the surrounding temperature. In a process similar to what happens in a water heater, calcium deposits can accumulate on the armature, causing it to stick and possibly malfunction.
Some pneumatic devices used in industrial applications have valves that vent system pressure directly to the surrounding atmosphere. Under such circumstances, the noise will invade workers’ ears from time to time. In order to avoid or reduce these effects, a pneumatic silencer can be installed at the exhaust port. The main working principle of the muffler is to block the airflow noise generated when the pneumatic valve is exhausted, dissipate the energy generated in the process, and diffuse the energy into the atmosphere. There are several different types of pneumatic silencers on the market. They have various flow levels, back pressure, noise reduction levels and accessories.