後藤 零

ตอบกระทู้

กำลังดู 15 ข้อความ - 1 ผ่านทาง 15 (ของทั้งหมด 17)
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  • เพื่อตอบกลับ: Can silica gel be air-dried after use? #123775
    後藤 零
    สมาชิก

    Silica gel can lose some moisture through air drying, but it is not an effective method for full regeneration. Air drying is slow and does not reach the temperatures needed to thoroughly remove absorbed moisture. For complete moisture removal, heating the silica gel to 120-150°C is necessary. GlobeCore offers equipment designed to automate this process for larger-scale regeneration, ensuring that the silica gel is properly dried and can be reused efficiently without relying on the slow process of air drying.

    เพื่อตอบกลับ: How does silica gel moisture removal work? #123671
    後藤 零
    สมาชิก

    Silica gel removes moisture through adsorption, where water molecules are attracted to and held on the gel’s surface. Over time, the silica gel becomes saturated with moisture and loses its effectiveness. Regeneration is required to remove this moisture and restore its drying capacity. By heating the gel to 120-150°C, the absorbed water evaporates. For industrial applications, GlobeCore offers advanced equipment that automates this process, ensuring effective moisture removal and maximizing the lifecycle of the silica gel.

    เพื่อตอบกลับ: What is the difference between filtration and purification of wind turbine transformer oil? #123096
    後藤 零
    สมาชิก

    Filtration and purification are both processes for improving the quality of wind turbine transformer oil, but they target different impurities. Filtration primarily removes solid contaminants like dirt, metal particles, and sludge using filters, while purification goes beyond filtration by addressing dissolved gases, moisture, and chemical impurities. Purification often involves degassing, dehydration, and sometimes regeneration of the oil through chemical treatments to restore its dielectric properties, making it more comprehensive than filtration alone.

    เพื่อตอบกลับ: How does Hydraulic System Filtration impact the maintenance schedule of hydraulic machinery? #123036
    後藤 零
    สมาชิก

    Hydraulic System Filtration significantly impacts the maintenance schedule of hydraulic machinery by determining the frequency and scope of maintenance activities. Effective filtration ensures that contaminants such as particulates, moisture, and acids are consistently removed from the hydraulic oil, thereby protecting machinery components from wear, corrosion, and damage. This protection reduces the need for frequent repairs and extends the lifespan of hydraulic parts like pumps, valves, and actuators. As a result, maintenance schedules can be optimized, focusing on proactive rather than reactive maintenance. High-efficiency filtration systems allow for longer intervals between oil changes and filter replacements, minimizing downtime and operational disruptions. Additionally, cleaner hydraulic oil improves system performance and reliability, reducing the occurrence of unexpected failures and extending overall equipment life. Consequently, robust hydraulic system filtration contributes to a more efficient and cost-effective maintenance regimen, ensuring sustained performance and reducing overall maintenance costs.

    เพื่อตอบกลับ: How does fuel oil tank cleaning and polishing improve fuel quality? #122918
    後藤 零
    สมาชิก

    Fuel oil tank cleaning and polishing remove contaminants like water, sludge, and particulates that accumulate over time in storage tanks. Cleaning the tank ensures that no residual contaminants remain, while polishing continuously purifies the fuel, preventing fuel degradation and ensuring high-quality fuel is always available for use.

    เพื่อตอบกลับ: How are high voltage transformer bushing diagnostics performed? #122825
    後藤 零
    สมาชิก

    Diagnostics are performed through insulation resistance testing, capacitance measurement, and partial discharge testing. Dissolved gas analysis (DGA) of the bushing oil can detect faults early. Infrared thermography is used to detect hot spots, while acoustic sensors help identify abnormal vibrations. Regular visual inspections and oil level checks are also part of bushing diagnostics.

    เพื่อตอบกลับ: How does Midel 7131 perform as an insulating fluid? #122813
    後藤 零
    สมาชิก

    Midel 7131 synthetic ester performs exceptionally well as an insulating fluid, offering high dielectric strength, excellent thermal stability, and effective cooling capabilities. It is also resistant to oxidation and moisture ingress, maintaining its insulating properties even in humid or wet conditions. This makes it a reliable choice for high-performance transformers.

    เพื่อตอบกลับ: What Diesel Fuel Treatment methods are most effective for improving fuel quality? #122138
    後藤 零
    สมาชิก

    The most effective Diesel Fuel Treatment methods for improving fuel quality include water separation, filtration, and additive application. Water Separation involves removing moisture from diesel fuel using devices like water separators or fuel dryers, preventing corrosion and microbial growth. Filtration employs high-efficiency filters to capture particulate matter, dirt, and contaminants, ensuring clean fuel delivery to the engine. Additive Application enhances fuel properties by incorporating anti-oxidants, detergents, lubricity agents, and cetane improvers, which stabilize the fuel, improve combustion efficiency, and reduce engine wear. Biocide Treatment is also effective in eliminating microbial contamination, maintaining fuel hygiene. Fuel Polishing Systems continuously clean and condition the fuel, providing ongoing purification. Combining these methods ensures comprehensive improvement in diesel fuel quality, leading to enhanced engine performance, reduced maintenance costs, and extended engine life.

    เพื่อตอบกลับ: How is a cable oil purification system designed for optimal performance? #121777
    後藤 零
    สมาชิก

    Design considerations include:

    Capacity Matching: Ensuring the system can handle the volume of oil in the cable network.
    Technology Selection: Choosing appropriate purification techniques based on contamination types.
    Automation Level: Incorporating control systems for efficient and safe operation.
    Modularity: Designing for scalability and ease of maintenance.
    Energy Efficiency: Utilizing components that minimize power consumption.
    Material Compatibility: Selecting materials resistant to the specific oil and contaminants.
    Safety Features: Integrating alarms, emergency shutdowns, and compliance with safety standards.
    A well-designed system maximizes purification effectiveness while minimizing operational costs and risks.

    เพื่อตอบกลับ: How can oil be purified from water and impurities? #121774
    後藤 零
    สมาชิก

    Purification methods include:

    Vacuum Dehydration: Evaporating water under low pressure.
    Centrifugation: Separating water and impurities by density.
    Coalescing Filters: Aggregating water droplets for separation.
    Adsorption: Removing dissolved water and impurities using absorbent materials.
    Filtration: Eliminating solid particles with fine filters.
    Combining these methods effectively restores oil purity.

    เพื่อตอบกลับ: What specific transformers are used in high-speed trains? #121723
    後藤 零
    สมาชิก

    High-speed trains use specialized traction transformers that are compact, lightweight, and capable of handling high power levels with excellent efficiency. They often employ advanced materials like aluminum windings and composite insulation to reduce weight. Enhanced cooling systems, such as forced air or oil cooling with heat exchangers, manage the substantial heat generated. The transformers must tolerate high mechanical stresses from rapid acceleration and deceleration. Designs may be modular for easier maintenance and integrated with other onboard electrical systems for optimal performance.

    เพื่อตอบกลับ: What are the common sources of cutting oil contamination and how can they be prevented? #121547
    後藤 零
    สมาชิก

    Metal Particles: Generated during machining.
    Tramp Oils: Leaked lubricants from machine components.
    Microbial Growth: Bacteria and fungi introduced through water or air.
    Dirt and Debris: External contaminants entering the system.
    Water Hardness Minerals: Minerals from the water supply affecting water-based fluids.
    Prevention:

    Effective Filtration: Regularly filter the cutting oil to remove particulates.
    Tramp Oil Skimming: Use skimmers to remove floating oils.
    System Sealing: Ensure equipment is well-maintained to prevent leaks.
    Water Treatment: Use deionized or softened water for dilutions.
    Microbial Control: Implement biocides and maintain appropriate pH levels.
    Good Housekeeping: Keep the work area clean and covered when not in use.
    Implementing these measures maintains fluid integrity and prolongs its effective use.

    เพื่อตอบกลับ: What is a transformer turns ratio tester used for? #119976
    後藤 零
    สมาชิก

    A transformer turns ratio tester is an essential device used for evaluating the turns ratio of transformers, which is crucial for assessing their operational integrity. It measures the ratio of the primary winding voltage to the secondary winding voltage and can identify issues like improper connections or faults within the transformer. Using this tester helps in preventive maintenance, ensuring transformers operate efficiently and safely. Regular testing with a transformer turns ratio tester can help in diagnosing potential problems before they lead to transformer failures, thus enhancing reliability in industrial applications. This equipment is vital in the broader context of diagnostic tools like the transformer megger test, ensuring the longevity and optimal performance of transformers and associated electrical equipment.

    เพื่อตอบกลับ: How to make potassium humate from lignite coal? #119639
    後藤 零
    สมาชิก

    To make potassium humate from lignite coal:

    Crush the Coal: Start by crushing the lignite coal into a fine powder to increase surface area for extraction.
    Alkaline Extraction: Add potassium hydroxide (KOH) to the powdered lignite coal in a large container. The alkali dissolves the humic and fulvic acids present in the coal, producing a potassium-rich solution.
    Stirring and Heating: Heat and stir the mixture to speed up the reaction and extract more humic acid from the coal.
    Filtration: After sufficient extraction, filter the mixture to separate the humic acid solution from the solid residue.
    Neutralization: Neutralize the solution to stabilize the potassium humate, making it safe for agricultural use.
    Drying (Optional): The potassium humate solution can be concentrated and dried to produce powder or granules.
    This process allows for the efficient production of potassium humate from lignite coal.

    เพื่อตอบกลับ: What is the BDV test of transformer oil? #118918
    後藤 零
    สมาชิก

    The BDV test of transformer oil, also known as breakdown voltage testing, is a crucial diagnostic procedure used to assess the electrical insulating properties of transformer oil. This test measures the voltage at which the oil breaks down and conducts electricity, indicating its ability to insulate electrical components in transformers. A high BDV value suggests good insulation quality, while a low value may indicate contamination or deterioration of the oil. Globecore offers advanced testers specifically designed for conducting BDV tests, which provide accurate and reliable measurements to ensure the safe and efficient operation of transformers. Regular BDV testing is essential for maintaining transformer reliability and preventing electrical failures.

กำลังดู 15 ข้อความ - 1 ผ่านทาง 15 (ของทั้งหมด 17)

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