Servo valve S63JOGA4VPL is a high-performance hydraulic control element, which is widely used in the electro-hydraulic control system of steam turbine generator sets. Its main operating environment is phosphate ester fire-resistant oil, which has excellent fire-resistant properties and greatly improves the safety performance of the unit. However, the particle size index of fire-resistant oil has a vital impact on the safety of unit operation, especially in the electro-hydraulic control system before and after the unit is started, the requirements for particle size index are more stringent.

The particle size index of phosphate ester fire-resistant oil is directly related to the normal operation of servo valve S63JOGA4VPL. Before the particle size index is qualified, the system must be strictly flushed and filtered to ensure the stable operation of the servo valve. The fire-resistant oil system of the steam turbine generator set has very strict requirements on the particle size of the oil. Once the number of particles in the oil increases, the servo valve may be blocked, worn or even damaged, thereby affecting the safe operation of the unit.

During actual operation, if the number of particles in the oil suddenly increases, the filter of the fire-resistant oil system should be checked immediately. If there are corroded or worn particles on the filter, it is necessary to further find the source of the particles to ensure the safety of the unit. During this process, the unit can be stopped for inspection if necessary to completely eliminate hidden dangers. To prevent the servo valve S63JOGA4VPL from clogging and damage, the following measures can be taken:

1. Add a vacuum oil purifier: The vacuum oil purifier can effectively remove moisture, gas and particulate impurities in the oil and improve the quality of the oil. By strengthening the oil filtration and reducing the particle content in the oil, it helps to ensure the normal operation of the servo valve S63JOGA4VPL.

2. Improve the filtering accuracy of the filter: Improving the filtering accuracy of the filter can help intercept more fine particles and reduce the risk of servo valve clogging. At the same time, regularly replace the filter to ensure that the filter always maintains good filtering performance.

3. Optimize the design of the feedback rod: For problems such as bending, poor rigidity, and fast wear of the feedback rod, the feedback rod can be optimized to improve its rigidity and wear resistance, reduce the wear rate, and extend its service life.

4. Strengthen daily maintenance: Regularly clean, inspect and maintain the servo valve S63JOGA4VPL to ensure that it is always in good working condition. At the same time, strengthen the monitoring of the fuel oil system to promptly discover and solve potential problems.

In short, the important role of the servo valve S63JOGA4VPL in the electro-hydraulic control system of the steam turbine generator set cannot be ignored. By strictly controlling the particle size index of the phosphate ester fuel oil, strengthening oil filtering measures, improving the filtering accuracy of the filter screen, and optimizing the design of the feedback rod, the risk of servo valve blockage and damage can be effectively reduced to ensure the safe and stable operation of the unit.