With reliable control systems, extensive commissioning experience, and comprehensive training services, Henan Rentai helps clients optimize operations, reduce costs, and enhance equipment efficiency, earning high praise from customers.
Factory Boiler Control and Balancing: Tobacco Factory
Configuration: 4 sets of SIEMENS PLC + 1 centralized control system
For a tobacco factory, we configured three boiler control panels and one centralized control system for their gas-fired steam boiler system. The system manages fuel consumption, three-element feedwater control, steam flow, TDS automatic blowdown, and flue gas oxygen content analysis.
Features:
Individual Boiler Control: Each control panel manages the corresponding boiler status, including pump lead/lag sequencing, steam manifold pressure, and water tank level control.
Advanced Equipment: All panels are equipped with Siemens controllers and Siemens HMI touchscreens.
Data Management: High-performance Dell industrial computers are used for storing all historical data, enabling detailed analysis and optimization.
This project exemplifies how Henan Rentai's tailored solutions meet complex industrial requirements, ensuring efficient and reliable boiler operations.
Application of PLC+Host Computer Control System in the Textile Industry
Configuration: 2 sets of SIEMENS PLC + 1 host computer control system
We equipped two steam boilers used in a textile raw material manufacturing plant with a PLC+ Host computer control system. The system uses Siemens PLC, ABB frequency converters, Schneider components, and other technologies to manage fuel consumption, three-pulse feed water, steam and feed water flow rates, deaerator, and more. After using the system for a period, the client compared it to their previous control system and found that the detection data was more accurate and the entire system was more energy-efficient.
Explosion-Proof PLC Control Cabinet: Solutions for the Chemical Industry
Configuration: 2 sets of SIEMENS PLCs, positive pressure explosion-proof control cabinet
For steam boilers and thermal oil boilers used in the chemical industry, where production environments are demanding and the surrounding site conditions are complex, we have designed and equipped positive pressure explosion-proof control cabinets to ensure the safety of on-site control systems. These cabinets operate in a positive pressure mode, effectively preventing external harmful gases from entering the cabinet and thereby reducing the risk of explosions. In positive pressure mode, gases inside the cabinet are discharged through sealing devices while maintaining stable internal pressure, ensuring long-term reliable operation of the equipment.
Our control system is based on Siemens SIMATIC S7-200 SMART PLC, combined with domestic variable frequency drives, MCGS touchscreens, and Chint Electric components. This configuration reduces the overall cost of the control system for customers while delivering efficient and reliable performance, providing an economical and effective solution tailored to the specific needs of the chemical industry.
S7-1200 PLC Application in Boiler Systems for the Food Industry
Configuration: SIEMENS S7-1200
This is a steam boiler control system we supplied to a food factory, providing seamless and precise control for the following systems:
- Boiler lead/lag sequencing and combustion rate control
- Boiler feed pump lead/lag sequencing and speed control
- Condensate tank level control
- Deaerator tank level control
- Heat exchanger temperature control
- Air handling flow and temperature control (intake and exhaust fans)
Regardless of the size of the plant, Henan Rentai Electrical Equipment control system offers significant benefits, enhancing operational efficiency and reliability for any food industry application.
Integrated PLC+HMI Deaerator Control System
Configuration: Integrated PLC+HMI Boiler Controller
This control system is specifically tailored for deaerator manufacturers, offering high reliability, a high degree of automation, ease of use, simple operation, rich functionality, flexible control, attractive design, and an excellent cost-performance ratio. It has been widely praised by our clients.
Our all-in-one PLC deaerator control system includes automated control functions such as deaerator level control and deaerator temperature control, enabling intelligent and efficient operation.
Henan Rentai can provide customized control systems tailored to the specific requirements of any industry needing system control. To date, we have successfully delivered control systems for heat exchange, condensate water, reactor, continuous and intermittent blowdown, and sludge treatment systems.
Energy Management System: Circulating Fluidized Bed Boiler DCS Control System
Configuration: Xinhua DCS Control
Circulating fluidized bed boilers feature numerous control points and stringent operational requirements. We developed and designed a dedicated boiler DCS control system for an energy company to meet these demands.
The DCS control system of a boiler relies on the central DCS host for control and auxiliary control cabinets for signal transmission and execution. For example, in the case of circulating fluidized bed boiler DCS control, the corresponding control cabinets include: DCS Host Control Cabinet / Low-Voltage Power Supply Cabinet / Capacitor Compensation Cabinet / Primary Blower VFD Cabinet / Secondary Blower VFD Cabinet / #1 Feed Water Pump VFD Cabinet / #2 Feed Water Pump VFD Cabinet / #1-#2 Desulfurization and Denitrification Pump VFD Cabinet / Roots Blower and Deaeration Pump VFD Cabinet, among others.
This comprehensive configuration ensures precise control, efficient signal transmission, and reliable execution, meeting the complex requirements of energy management systems in industrial applications.
Electric Boiler Control System for Hotel Heating and Domestic Hot Water
Configuration: SIEMENS S7-200 SMART
Henan Rentai electric boiler control system is designed to scientifically regulate the number and speed of electric heating elements engaged based on load requirements, achieving precise control. Each load adjustment process is an intelligent optimization, ensuring stable and efficient operation.
The system effectively prevents sudden large-load engagements or disconnections of heating elements, minimizing impacts on the power grid. Additionally, our unique heating element lifespan balancing algorithm and seamless control for engaging/disengaging heating elements significantly extend the service life of the heating elements.
This advanced control system ensures energy efficiency, reliability, and optimal performance for hotel bathing and domestic hot water applications.
Biomass Steam Boiler Control System for the Paper Industry
Configuration: SIEMENS S7-1200
We have tailored a control system based on the fuel feeding method, combustion state, and the specific needs of our clients and users. This system achieves automation in fuel feeding, ensures complete combustion, automates slag removal, enables variable-frequency boiler feedwater control, and provides automatic deaerator control.
Our control system has been highly praised by both our clients and end users for its efficiency and reliability.
Intelligent Poultry Farm Control System
Configuration: SIEMENS S7-1200
We conducted site assessments, system design, programming, testing, and commissioning to effectively control 8 zones of a poultry farm. This comprehensive approach enabled the farm to achieve intelligent poultry farming, optimizing operations and improving efficiency.
Corner Tube Boiler Control System
Configuration: SIEMENS S7-1500
Leveraging our technical expertise, we designed and developed a customized control system for corner tube boilers. The system processes continuous input signals from devices such as induced draft fans, forced draft fans, secondary induced draft fans, feeders, deaerator water pumps, and variable frequency feedwater pumps. Based on pre-set logical programs in the PLC, it generates precise commands to ensure efficient and reliable boiler operation.
Application of Thyristor Electric Boiler Control System in the Technology Industry
Configuration: SIEMENS S7-1200 (CE Certification)
To meet customer requirements for precise power control of electric boilers and CE certification compliance, we provided a customized solution tailored to their needs.
The thyristor electric boiler control cabinet is a high-efficiency control device specifically designed for electric heating boilers, with its core component being the thyristor module. As an advanced semiconductor device, the thyristor precisely controls voltage and power by adjusting the conduction angle of the current, enabling accurate regulation of the boiler heating process.
Key Features and Functions of the Thyristor Electric Boiler Control Cabinet:
Heating Power Adjustment
The thyristor control system flexibly adjusts electric heating power based on real-time boiler temperature requirements, enhancing energy efficiency and reducing power consumption.
Temperature Control
Equipped with precise temperature sensors, the control cabinet regulates current through the thyristor to maintain constant boiler temperature, ensuring stable and reliable heating.
Comprehensive Protection Features
Includes multiple safety measures such as short-circuit protection, overcurrent protection, and overheat protection, ensuring the safe operation of the equipment.
Segmented Heating Control
Supports multi-stage segmented heating control, allowing stepwise adjustment of heating zones. This improves temperature control accuracy and effectively prevents overheating.
Outstanding Energy Efficiency
The thyristor enables smooth current regulation, reducing energy consumption and significantly lowering operational costs while improving overall economic benefits.
With its superior control precision and high reliability, this system is ideal for the technology industry, where stringent temperature control is essential. It provides customers with an efficient, energy-saving, and safe solution that meets their operational demands.
Biomass Boiler DCS Control System Application in Combined Heat and Power (CHP) Projects
Configuration: HOLLiAS DCS Control System
The biomass boiler DCS (Distributed Control System) plays a critical role in combined heat and power (CHP) projects. By integrating advanced automation and control technologies, the system ensures precise control and optimized management of key processes, including boiler combustion, fuel feeding, flue gas treatment, and thermal energy conversion.
The DCS system provides real-time monitoring of boiler operating parameters and rapidly adjusts combustion states based on changing conditions, thereby enhancing fuel utilization efficiency and reducing pollutant emissions. Its intelligent control features ensure the safe and efficient operation of equipment throughout the system.
In CHP projects, the application of the biomass boiler DCS control system significantly improves operational stability and economic efficiency. Moreover, it supports the efficient use of clean energy and helps achieve carbon reduction goals. Its outstanding performance facilitates the dual objectives of resource optimization and environmental protection, making it an indispensable component of modern energy systems.
Conclusion
Henan Rentai Electrical Equipment CO., LTD will continue to focus on technological innovation, enhance product development efforts, and consistently improve service quality to meet the growing demands of the market. Through our continuous efforts and innovations, we aim to serve more clients and users effectively.
If you have any control system requirements, please feel free to contact us. We are here to provide tailored solutions that meet your needs.
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