Environmental Ring Main Unit Assembly and Testing Production Line
The Environmental Ring Main Unit production line is an automated system specifically designed for the manufacturing of high-voltage switchgear. It achieves a fully automated production process from raw material processing to product assembly. Key production steps include metal enclosure manufacturing, functional circuit assembly, actuator installation, insulation treatment, and performance testing. The production line uses automated shuttle carts and customized workstation modules to efficiently complete the production stages. Performance testing systems, gas box helium leak detection systems, and power frequency withstand voltage testing systems ensure product quality. The control management system monitors the production process in real-time, improving efficiency and reliability while reducing costs, ensuring high performance and safety of the Ring Main Unit. Customized designs meet different models and production requirements, and by integrating advanced technologies, the production process achieves high efficiency and quality.
Common Names of Ring Main Unit (RMU):
- Ring Main Unit (RMU)
- Load Switch Cabinet
- Outdoor Box-type RMU
- Disconnecting Switch
- SF6 Load Switch and SF6 Load Switch + Fuse Combination Devices
Basic Structure of RMU:
- Switching Compartment: Contains grounding switches, load switches, and the busbar between their circuits.
- Fuse Compartment: Protects the transformer circuit with a high-voltage current-limiting fuse.
- Actuator Compartment: Equipped with manual or electrically stored spring actuators.
- Cable Compartment (Base): Forms the foundational part of the RMU.
Ring Main Units can also be classified into types based on their gas-box structure, insulation materials, and usage environments, including common-box or modular types, American or European styles, solid insulation, air insulation, SF6 gas insulation, indoor or outdoor applications.
Assembly and Testing Process Flow Line for RMU:
- Metal Enclosure Manufacturing: Cold-rolled steel or stainless steel plates are welded to form a sealed switching compartment.
- Functional Circuit Assembly: Installation of load switches, grounding switches, and their contact systems.
- Actuator Installation: Installation of spring-operated energy storage actuators with mechanical interlocking.
- Insulation Treatment: Insulating components to meet insulation strength requirements.
- Performance Testing: Mechanical characteristics tests, electrical performance tests, and gas-tightness checks are performed to ensure the product meets standards.
The production line integrates advanced automation technology and information management systems to achieve high efficiency, quality, and reliability.
Robotic Welding Technology for RMU:
The RMU production uses robotic welding systems with the following features:
- Utilizes six-axis articulated robots and CMT cold arc welding technology to reduce welding deformation and achieve aesthetically pleasing welds.
- Uses single-axis servo positioners and external axis linkage technology for continuous welding of RMU corners, avoiding leaks.
- Welding fixtures are designed to ensure precision and consistency in the welding process.
Role of MES in RMU Production:
The Manufacturing Execution System (MES) plays a crucial role in RMU production:
- Real-Time Monitoring: Monitors and manages the entire production process.
- Automation and Informatization: Automates production processes, reducing manual intervention.
- Customized Design: The MES system can be tailored to different production needs and adjusted accordingly.
- Quality Assurance: The MES system ensures that every step of the production process meets quality standards, ensuring high performance and safety of the final product.
In conclusion, by integrating automation technology, robotic welding, and MES systems, the RMU production line achieves a fully automated process from raw material processing to final product assembly, improving production efficiency, product quality, and reliability.
