Mining mobile transformer model

　　Analysis of the Mine-used Mobile Transformer Model

　　I. Model Definition and Core Functions

　　The mine-used mobile transformer model is a movable power equipment designed for harsh mining environments. Its core function is to achieve flexible conversion of alternating current (AC) voltage through electromagnetic induction, providing stable power support for mining operations. Typically, this model comprises a high-voltage vacuum distribution device, an explosion-proof dry-type transformer, and a low-voltage protection box. It is equipped with short-circuit, overload, leakage, under-voltage protection, and over-temperature alarm functions to ensure safe operation in environments with the risk of gas and coal dust explosions.

　　II. Technical Parameters and Performance Indicators

　　Basic Parameters

　　Model Example: KBSGZY-1250/6/3.45

　　Rated Capacity: 1250 kVA

　　Voltage Combination: (6±5%)/3.45 kV

　　Insulation Level: LI60AC25/AC18 (H-grade heat resistance)

　　Overall Dimensions: ≤2900 × 1100 × 1800 mm

　　Model Extension: KBSGZY-1250/10/0.693

　　Overall Dimensions: 4300 × 1250 × 1750 mm

　　Voltage Regulation Range: ±2 × 2.5%

　　Short-circuit Impedance: ≤4.5%

　　Key Performance Characteristics

　　Heat Dissipation and Insulation: Utilizes H-grade insulation materials and vacuum pressure impregnation technology to withstand high-temperature and high-humidity environments, with strong overload capacity.

　　Mechanical Strength: Features a fully corrugated shell structure with explosion-proof and impact-resistant properties, suitable for mining transportation vibrations.

　　Energy Efficiency Optimization: The iron core adopts low-loss silicon steel sheets and a "seven-step" new process, reducing no-load losses by 20%-30% and noise levels below 65 dB.

　　III. Structural Design and Innovative Features

　　Modular Combination

　　The high-voltage distribution device, transformer body, and low-voltage protection box are independently designed and enable rapid assembly and disassembly through electrical interlocking, shortening deployment times.

　　Example: In a certain transformer model, the high-voltage coil adopts a cylindrical structure, ensuring uniform impulse voltage distribution and enhancing over-voltage resistance by 40%.

　　Safety Protection Mechanisms

　　Explosion-proof Design: The shell meets the GB8286-2017 standard, capable of withstanding internal explosion pressures without rupture.

　　Environmental Adaptability: Operates within a temperature range of -30°C to +40°C and remains stable at humidity levels up to 95%.

　　Intelligent Protection: The high-voltage switch and low-voltage box are interlocked, automatically cutting off power and triggering an alarm in case of over-temperature conditions.

　　Lightweight and Mobility

　　Adopts a high-strength aluminum alloy frame, reducing weight by 15% compared to traditional models. It supports manual pushing or mechanical towing with roller or track designs.

　　IV. Application Scenarios and Industry Value

　　Core Application Areas

　　Coal Mine Underground: Provides power for equipment such as coal mining machines and conveyors, addressing the limitations of fixed substations in terms of power supply distance.

　　Metal Mines: Adapts to scenarios such as tunnel excavation and open-pit mining, supporting special requirements like 220 V lamp lighting.

　　Emergency Power Supply: Rapidly restores power to critical areas during natural disasters or equipment failures.

　　Economic Benefit Analysis

　　Cost Savings: The mobile design reduces cable laying lengths, lowering initial investment and subsequent maintenance costs.

　　Efficiency Improvement: Equipment deployment time is shortened from several hours in traditional solutions to within 30 minutes, enhancing operational continuity.

　　Safety Assurance: The explosion-proof performance reduces the risk of gas explosions by over 80%, complying with mining safety regulations.

　V. Design Software and Modeling Tools

　　Mainstream Modeling Platforms

　　SolidWorks: Used for solid modeling and assembly simulation, supporting STP format file export.

　　AutoCAD: Draws two-dimensional engineering diagrams, annotating dimensional tolerances and technical requirements.

　　CATIA/UG: Facilitates complex surface design and finite element analysis to optimize heat dissipation channel structures.

　　Simulation Verification Process

　　Electromagnetic Simulation: Calculates coil losses and temperature rise distributions using Maxwell software.

　　Structural Analysis: Verifies shell deformation under explosion impacts using ANSYS to ensure compliance with standards.

　　Motion Simulation: Simulates equipment stability on slopes to ensure the reliability of roller locking mechanisms.

　　VI. Industry Trends and Development Directions

　　Intelligent Upgrades

　　Integrates IoT sensors to monitor parameters such as oil temperature and load rate in real-time, enabling remote diagnostics via cloud platforms.

　　Example: A company has introduced a smart transformer with self-diagnostic capabilities, achieving a fault warning accuracy rate of 95%.

　　Green and Energy-Efficient Technologies

　　Adopts amorphous alloy iron cores, reducing no-load losses by 70%-80% and aligning with national "dual carbon" strategy requirements.

　　Develops a hybrid cooling mode combining natural and forced air cooling, upgrading energy efficiency to Class I standards.

　　Standardization and Modularization

　　Promotes unified interface designs to enable interoperability between equipment from different manufacturers, reducing mining operation and maintenance costs.

　　Develop standardized functional modules (e.g., explosion-proof boxes, low-voltage switches) to shorten new product development cycles.