吉田 陽一

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  • The Penetration Index (PI) is calculated using penetration and softening point test results. It signifies the temperature susceptibility of bitumen—the degree to which its hardness changes with temperature. A higher PI indicates lower temperature susceptibility, meaning the bitumen maintains consistent performance across temperature variations.

    The binder provides adhesion between aggregates, creating a cohesive and durable pavement layer. It also imparts flexibility and resistance to cracking and deformation under traffic loads.

    in reply to: What are bituminous emulsions and their applications? #130954

    Bituminous emulsions are stable mixtures of bitumen and water, used extensively in road construction and maintenance. Applications include surface dressing, where they provide a protective layer over existing pavements; tack coats, which enhance adhesion between pavement layers; and cold mix asphalt for road repairs. They are also used in microsurfacing and slurry seals to fill minor cracks and improve surface texture. Bituminous emulsions are favored for their ease of application, energy efficiency, and environmental benefits, such as reduced emissions and lower energy consumption during application.

    in reply to: What are the top techniques for silica gel reactivation? #123663

    Silica gel reactivation can be achieved through several techniques, including oven drying, microwave heating, and using dedicated regeneration equipment. Oven drying involves heating at 120-150°C for 2-3 hours, while microwave heating requires lower times but careful monitoring to avoid burning. For industrial applications, GlobeCore provides automated regeneration systems that ensure consistent and efficient reactivation. These systems maintain optimal temperatures and airflow, ensuring the silica gel is thoroughly dried, making them ideal for large-scale reactivation needs.

    Common materials used in high voltage transformer bushings include porcelain, resin-impregnated paper (RIP), and resin-bonded paper (RBP) for insulation. Porcelain is typically used for outdoor bushings due to its durability and resistance to environmental factors. RIP bushings use paper impregnated with resin, providing high dielectric strength and moisture resistance. Some modern bushings use epoxy resin as insulation, which offers good mechanical strength and resistance to environmental stress. The oil or gas within the bushing also serves as an insulating and cooling medium.

    The main components of a condensate polishing system include mechanical filters, ion exchange resin columns, and mixed-bed resin units. Mechanical filters remove suspended solids, while ion exchange resins remove dissolved salts and other ionic impurities. Mixed-bed resin systems, which combine cation and anion exchange, are often used for final polishing to achieve high-purity condensate. Other components may include activated carbon filters to remove organic contaminants, pumps to circulate the condensate, and monitoring instruments to track parameters such as conductivity and pH. Regular maintenance of these components is essential to ensure effective operation.

    Midel-filled transformers are environmentally friendly due to the biodegradable nature of the oil. In case of spills, Midel oil has minimal environmental impact compared to traditional mineral oils. Additionally, its non-toxic properties make it safer for ecosystems. The use of Midel oil reduces the risk of transformer fires, further limiting potential environmental damage.

    in reply to: How is sludge removed from wind turbine transformer oil? #122805

    Sludge is removed from wind turbine transformer oil through a combination of filtration and oil regeneration processes. Filters capture sludge particles, while chemical treatments during regeneration break down and neutralize sludge-forming compounds. Vacuum degassing may also aid in the removal of moisture and gases that contribute to sludge formation, ensuring the oil remains clean and effective for long-term use.

    The fuel oil polishing process involves several steps: first, fuel is pumped from the storage tank into the polishing system. Water and large contaminants are separated and removed using filtration and centrifugation. Fine filters then capture smaller particulates. Finally, the cleaned fuel is returned to the storage tank, ensuring it meets the required quality standards for use in engines or generators.

    Automated Diesel Fuel Purification Systems significantly enhance operational efficiency by streamlining fuel management processes. Real-Time Monitoring allows continuous assessment of fuel quality, enabling immediate adjustments to purification parameters without manual intervention. Consistent Fuel Quality ensures that diesel remains free from contaminants, optimizing engine performance and reducing the likelihood of breakdowns. Reduced Downtime is achieved as automated systems can quickly respond to fuel quality issues, preventing prolonged disruptions in operations. Energy Efficiency is enhanced through optimized operation schedules and reduced need for manual adjustments, lowering overall energy consumption. Predictive Maintenance features utilize data analytics to anticipate component wear and schedule maintenance proactively, minimizing unexpected failures. Labor Savings occur as automation reduces the need for constant human oversight, allowing personnel to focus on other critical tasks. Additionally, Scalability and Flexibility of automated systems accommodate varying fuel demands and contamination levels, ensuring efficient purification across different operational scales. Overall, automation leads to more reliable, cost-effective, and efficient fuel purification, supporting seamless and uninterrupted industrial operations.

    Advancements in silicone oil purification technology include:

    Improved Vacuum Dehydration Systems: Enhanced designs achieve lower residual moisture levels more efficiently.

    Advanced Filtration Media: Development of high-efficiency filters that capture smaller particles without significant pressure drops.

    Adsorbent Materials: Use of specialized adsorbents like molecular sieves that more effectively remove acids and polar contaminants.

    Automation and Monitoring: Integration of sensors and control systems that provide real-time monitoring of oil parameters and automate the purification process.

    Mobile Purification Units: Compact, portable systems allow on-site purification without the need to transport oil to external facilities.

    Environmental Compliance: Technologies that minimize waste and reduce the environmental impact of the purification process.

    These advancements improve the efficiency, effectiveness, and convenience of silicone oil purification, contributing to better transformer maintenance practices.

    in reply to: What are the properties of insulating oil in x-ray tubes? #122254

    The properties of insulating oil used in x-ray tubes include high dielectric strength, thermal stability, and low moisture content. These oils must have excellent insulating capabilities to prevent electrical discharges in high-voltage environments. Additionally, the oil acts as a coolant, so it needs good thermal conductivity to absorb and dissipate heat effectively. Low acidity and resistance to oxidation are also crucial properties to ensure the oil’s longevity and reliability. GlobeCore offers oil filtration systems that help maintain the purity and quality of insulating oil in x-ray tubes by removing moisture and contaminants.

    in reply to: What are the quality standards for x-ray transformer oil? #122207

    X-ray transformer oil must meet several quality standards to ensure safe and efficient operation. These include a high dielectric strength (above 30 kV), low water content (less than 30 ppm), and a low acid number (below 0.05 mg KOH/g). The oil should also exhibit thermal stability and resist oxidation. Regular testing for contaminants such as particles, dissolved gases, and moisture is crucial to maintaining these standards. GlobeCore offers oil purification and testing systems to ensure that the oil remains within quality specifications, helping to extend transformer life and maintain reliable performance.

    Hydraulic oil anti-corrosive additives play a vital role in safeguarding hydraulic systems by preventing the formation of corrosive compounds that can damage metal components. These additives neutralize acids formed from the oxidation of hydraulic oil, which can otherwise corrode seals, cylinders, and other critical parts. By inhibiting corrosion, anti-corrosive additives help maintain the integrity and functionality of the hydraulic system, ensuring smooth operation and reducing the risk of leaks and mechanical failures. Additionally, these additives can form protective films on metal surfaces, providing a barrier against moisture and contaminants that contribute to corrosion. This protective action not only prolongs the lifespan of hydraulic components but also enhances overall system reliability and efficiency. Incorporating anti-corrosive additives into hydraulic oil is essential for maintaining optimal performance and preventing costly damage and downtime in hydraulic systems.

    in reply to: What are the common gear oil filtration processes? #121771

    Common processes include:

    Depth Filtration: Trapping particles within the filter media.
    Surface Filtration: Capturing particles on the filter surface.
    Centrifugal Separation: Using centrifugal force to separate contaminants.
    Vacuum Dehydration: Removing water and gases under vacuum conditions.
    Magnetic Filtration: Extracting ferrous particles with magnets.
    Coalescence: Combining small water droplets for easier removal.
    These processes target specific types of contaminants.

Viewing 15 posts - 1 through 15 (of 23 total)

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