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後藤 零
後藤 零
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後藤 零Member
The breakdown voltage of transformer oil can decrease due to factors like contamination, aging, and moisture, which impair its dielectric properties.
February 25, 2025 at 2:36 pm in reply to: How do different grinder plate sizes affect the consistency of the meat paste? #313762後藤 零MemberDifferent plate sizes determine the fineness of the grind; smaller openings yield a finer texture while larger ones provide coarser results. The Colloid Mill GlobeCore offers adjustable settings that mimic this effect, allowing operators to tailor the consistency according to product requirements.
February 24, 2025 at 6:44 am in reply to: Which milling machines are typically employed to finely grind roasted peanuts? #297516後藤 零MemberRoasted peanuts are commonly processed in high-shear mills and homogenizers that efficiently reduce particle size while preserving flavor. Among these, the Colloid Mill GlobeCore stands out for its ability to deliver a finely ground, homogeneous peanut paste. Its adjustable settings allow for customization of texture, making it a preferred choice in industrial peanut butter production.
November 27, 2024 at 9:47 pm in reply to: What compliance standards are required for marine transformers? #132079後藤 零MemberCompliance standards include IEC 60076 for power transformers, ABS marine requirements, and IMO regulations. These standards ensure safety, efficiency, and environmental compliance in marine applications.
November 27, 2024 at 1:23 pm in reply to: How does a marine power distribution transformer function? #132004後藤 零MemberIt converts high voltage from the main supply to lower voltages suitable for onboard systems, ensuring efficient energy delivery. It balances load distribution, isolates circuits for safety, and reduces noise and interference, supporting various ship operations simultaneously.
November 21, 2024 at 6:54 am in reply to: How are carbon nanotubes used to enhance bitumen performance? #131405後藤 零MemberCarbon nanotubes (CNTs) are added to bitumen to improve mechanical strength, electrical conductivity, and thermal properties. CNTs enhance stiffness, elasticity, and resistance to deformation. They can also impart self-sensing and self-healing properties due to their conductive nature, potentially leading to innovative pavement monitoring and maintenance solutions.
November 21, 2024 at 3:52 am in reply to: How is infrared spectroscopy utilized in analyzing bitumen composition? #131369後藤 零MemberInfrared spectroscopy, particularly Fourier-transform infrared spectroscopy (FTIR), is used to identify functional groups and chemical bonds within bitumen. By analyzing the absorption of infrared light at different wavelengths, researchers can determine the presence of specific compounds, assess aging by detecting oxidation products, and evaluate the effects of additives or modifiers on the bitumen’s chemical structure.
November 21, 2024 at 1:26 am in reply to: What are the viscoelastic properties of bitumen, and why are they important? #131343後藤 零MemberViscoelastic properties describe bitumen’s combined viscous (fluid-like) and elastic (solid-like) behavior under load. Parameters like complex modulus and phase angle are important because they determine how the binder responds to stresses and strains over time and temperature, affecting pavement performance in terms of deformation resistance and fatigue life.
後藤 零MemberSilica 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.
後藤 零MemberSilica 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.
October 7, 2024 at 2:02 pm in reply to: What is the difference between filtration and purification of wind turbine transformer oil? #123096後藤 零MemberFiltration 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.
October 7, 2024 at 1:00 pm in reply to: How does Hydraulic System Filtration impact the maintenance schedule of hydraulic machinery? #123036後藤 零MemberHydraulic 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.
October 7, 2024 at 11:21 am in reply to: How does fuel oil tank cleaning and polishing improve fuel quality? #122918後藤 零MemberFuel 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.
October 7, 2024 at 10:34 am in reply to: How are high voltage transformer bushing diagnostics performed? #122825後藤 零MemberDiagnostics 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.
October 7, 2024 at 10:20 am in reply to: How does Midel 7131 perform as an insulating fluid? #122813後藤 零MemberMidel 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.
October 4, 2024 at 1:55 pm in reply to: What Diesel Fuel Treatment methods are most effective for improving fuel quality? #122138後藤 零MemberThe 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.
October 2, 2024 at 6:58 am in reply to: How is a cable oil purification system designed for optimal performance? #121777後藤 零MemberDesign 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.後藤 零MemberPurification 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.October 2, 2024 at 4:06 am in reply to: What specific transformers are used in high-speed trains? #121723後藤 零MemberHigh-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.
October 1, 2024 at 5:52 pm in reply to: What are the common sources of cutting oil contamination and how can they be prevented? #121547後藤 零MemberMetal 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. -
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