As the core power equipment in the power, petrochemical, metallurgical and other industrial fields, the stable operation of steam turbines is directly related to production efficiency and energy security. In the complex hydraulic control system of steam turbines, actuator oil inlet filter elements (such as DL001001 fire-resistant oil filter element) bear the important responsibility of filtering impurities and protecting precision components. However, the compatibility of filter element materials and fire-resistant oil is often underestimated due to its concealment. Material compatibility not only determines the life and performance of the filter element itself, but also profoundly affects the stability of the entire hydraulic system, equipment safety and operation and maintenance costs.

1. The essence of material compatibility: the dual test of physics and chemistry

Material compatibility refers to the property that the filter element material and fire-resistant oil do not undergo harmful physical deformation or chemical reaction during long-term contact. Fire-resistant oil is widely used in steam turbine systems due to its high ignition point and low volatility, but its strong polarity and high oxidizability place strict requirements on filter element materials.

​Chemical stability: The acidic components and oxidation products in fire-resistant oils are prone to chemical reactions with materials. If the corrosion resistance of the filter element material is insufficient, the material will swell, become brittle, or even decompose, releasing particulate matter to contaminate the oil. For example, some low-compatibility polymers may produce colloids due to the corrosion of fire-resistant oils, blocking the pores of the filter element.

​Physical tolerance: The viscosity changes, mechanical shear force, and system pulse pressure of fire-resistant oils under high temperature and high pressure conditions require the filter element material to have excellent compressive strength and dimensional stability. If the material creeps or deforms, it will directly lead to a decrease in filtration accuracy and even cause structural damage.

The core of the design of the EH oil filter element DL001001 lies in its targeted material selection. It adopts a structure combining multi-layer composite metal fibers and special resins, which not only maintains mechanical strength through the metal skeleton, but also resists chemical erosion through the surface coating, reflecting the balanced thinking of compatibility design.

2. Systemic risk of compatibility failure

When the filter element material is not compatible with fire-resistant oil, its impact is not limited to a single component, but spreads to the entire system through the “pollution chain”:

​Degradation of filtration efficiency: The debris generated by material degradation will mix with the original impurities in the oil to form a secondary pollution source. At this time, the filter element not only fails to perform its filtering duties, but also becomes a “generator” of pollutants. A power plant once suffered from the swell of the filter element material, which caused the servo valve of the actuator to get stuck, causing unit power fluctuations, and direct economic losses of more than one million yuan.

​Degradation of hydraulic system reliability: Tiny particles in fire-resistant oil will accelerate the wear of precision components (such as servo valves and throttle holes). According to statistics, about 35% of hydraulic system failures can be traced back to oil contamination, and filter element compatibility defects are an important cause of such contamination.

​Operation and maintenance costs surge: Material failure forces the filter element replacement cycle to be shortened, and oil contamination will also increase the frequency of oil filtering and oil changes. Hidden costs are more reflected in production losses caused by unplanned downtime, as well as the labor and time investment in component replacement.

3. Full life cycle management strategy for material compatibility

To ensure the compatibility advantage of EH actuator filter element DL001001, it is necessary to implement full process control from selection, operation to maintenance:

​Operating condition adaptation: clarify the system operating temperature, pressure range and fire-resistant oil type, and select filter element products that meet the system requirements.

​Oil analysis: regularly test the acid value, particulate matter content and moisture content to promptly detect signs of material degradation. For example, an abnormal increase in the concentration of silicon in the oil may indicate that the filter element sealing material has dissolved.

​Pressure difference warning: install a pressure difference sensor to monitor the pressure changes before and after the filter element. A sudden increase in pressure difference may indicate that the filter element is blocked or the structure is deformed. It is necessary to combine the oil inspection data to determine whether the compatibility has failed.

The material compatibility of the turbine actuator oil inlet filter element is the “silent guardian” hidden behind the efficient operation of the equipment. The successful practice of the DL001001 filter element shows that only by deeply understanding the interaction mechanism between materials and media and establishing a full life cycle compatibility management system can we fundamentally avoid systemic risks and release the potential efficiency of steam turbine equipment.

When looking for high-quality, reliable oil filters, YOYIK is undoubtedly a choice worth considering. The company specializes in providing a variety of power equipment including steam turbine accessories, and has won wide acclaim for its high-quality products and services. For more information or inquiries, please contact the customer service below:
E-mail: sales@yoyik.com
Tel: +86-838-2226655
Whatsapp: +86-13618105229

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