Introduction to CWNS Fuel Oil Hot Water Boiler

      CWNSSeries of fully automatic fuel oil hot water boilers, featuring a shell-type three-pass, full-wet back structure. Fuel burns under slight positive pressure within the furnace drum, with high-temperature flue gas flowing backward through the drum and entering a flue channel bundle via a re-burn chamber, then turning through a forced-draft smoke box.180°Enter the second bundle, exhausted to the atmosphere after convective heat exchange. Provides a continuous supply of heat energy for heating, domestic water, and production use.

     The main boiler utilizes the design concept of a symmetrical three-pass structure to create a larger three-pass hot water boiler. The distinctive features of this boiler include: all pressure elements are symmetrically aligned with the boiler drum center, the boiler employs a full wet-back structure, and with its large inner cylinder and eccentric firebox design, it is advantageous for expanding the sufficient radiant heating surface. The convective heating surface is composed of tubes in two-pass and three-pass configurations. The front tube plate before the reburning chamber is connected to the furnace shell, while the rear tube plate of the reburning chamber features an ellipsoidal head and tube plate. The two-pass and third-pass turning smoke chambers form the front smoke box, where the smoke temperature has already decreased to below.500Therefore, the structure of the front smoke box employs lightweight, fire-resistant, and insulating materials. The smoke outlet of the rear smoke box is positioned along the longitudinal axis of the cylinder, which not only shortens the length of the furnace body but also avoids placing the chimney perpendicular to the longitudinal axis of the cylinder, preventing condensate corrosion of the boiler body during startup and shutdown. The design of this boiler primarily considers the principles of boiler maintenance and stability. The spray device set within the return water inlet pre-washes the return water significantly, ensuring that the return water first contacts the flue tubes before reaching the boiler drum, thus increasing the water temperature contacting the boiler drum. This prevents the occurrence of water hammering locally.
    This series of boilers features a compact structure and is easy to install and transport. It undergoes thermal debugging before shipment.(Fuel)Stably operates at both startup and operation. Equipped with a circulating water pump inlet burner, the boiler features fully automatic program control and high degree of automation, achieving excellent combustion results.

Advantages and Features of CWNS Fuel Oil Hot Water Boiler

1. Scientific design, rational structure --- The boiler body employs a wet-back three-pass, full-wavy firebox, and threaded smoke tube structure, boasting excellent thermal expansion properties; the tube plate and cylinder are connected with a flange edge structure, and the main seams of the body are mainly in a butt joint design, all焊接 using submerged arc automatic welding.

2. Equipped with comprehensive processing equipment and advanced production techniques - The company boasts a large-scale, international, steel-structured production facility with excellent lighting and rational layout. The production equipment is well-matched and complete, with over 1,100 units of various equipment, including multiple sets of 400KVA and other non-destructive testing devices. The product manufacturing utilizes new technologies and processes such as CNC cutting, edge milling, submerged arc automatic welding, TIG welding, and smoke tube plate welding, ensuring product quality.

3. High level of automation and reliable equipment operation - Utilizes integrated mechanical and electrical control equipment and programmable logic controllers (PLCs) for joint control. The programmable logic controller (PLC) serves as the "central processing unit" of the control system. The control system is operated via a touch screen, significantly enhancing the level of automation and reliability of the boiler operations, making the operation simpler and more intuitive.

4. Long lifespan, high output, and high efficiency—scientific product design, meticulous manufacturing processes, and strict quality control. All boiler equipment produced in our factory has a continuous operation lifespan of over 10 years. The boiler's radiant heating surface features a full corrugated furnace shell, while the convective heating surface uses threaded flue pipes. With a large heating surface, the boiler produces ample heat output and achieves an energy efficiency of over 92%, exceeding national standards.

5. Abundant Fuel Supply, Energy-Efficient and Environmentally Friendly --- The boiler combustion chamber design is rational, accommodating various fuels such as city gas, natural gas, light diesel oil, and heavy oil. Fuel undergoes micro-positive pressure combustion within the furnace, resulting in minimal emissions. The technical indicators of the boiler, such as smoke gas opacity, dust opacity, concentration, and noise, all exceed the national first-class area standards.

6. Complete sets of spare parts, international brands - burners are from international brands such as Germany's Viessmann, Finland's Oy-Lohja, Italy's Ljubljana, and Germany's Buderus. Key valves and instruments are matched with domestic top brands and internationally renowned brands, such as Siemens from Germany, Schneider from France, and Omron from Japan, ensuring safe operation of the boiler.

Product Performance

Technical Specifications