The gas-fired hot water boiler adopts a shell-type three-pass, fully wet back structure. The fuel is burned with slight positive pressure in the furnace bladder, and the high-temperature flue gas enters the first flue tube bundle through the re-combustion chamber backwards along the furnace bladder, and enters the second tube bundle after turning 180° through the compressed front smoke box, and is discharged into the second tube bundle after convection heat exchange. atmosphere. Automatic hot water boiler provide continuous heat energy for heating, domestic water, and production heat.
The main engine of WNS series natural circulation hot water boiler uses the design idea of the symmetrical three-pass structure to design a large-capacity three-pass hot water boiler. The biggest feature of this series of boiler products: all pressure components are symmetrical to the center of the drum, the boiler adopts a fully wet back structure, with a large inner tube and an eccentric fire box structure, which is conducive to expansion of sufficient radiant heating surface. The convective heating surface is composed of a second-pass and three-pass tube bundle.
The front tube plate of the return combustion chamber of the automatic hot water boiler is connected with the furnace bladder, and the rear tube plate of the return combustion chamber adopts an ellipsoidal head and tube plate. The second return and third return turning smoke chambers of this series of gas fired boilers constitute the front smoke box, where the smoke temperature has been lower than 500°C. Therefore, the structure of the front smoke box adopts refractory and heat-insulating materials with a lightweight structure. The flue gas outlet of the rear smoke box is arranged in the direction along the longitudinal axis of the cylinder, which can not only shorten the length of the furnace body. It can also avoid that the chimney is placed in the direction perpendicular to the longitudinal axis of the cylinder, and the condensed water corrodes the boiler body when the boiler starts and stops.
The design of WNS series hot water boiler mainly considers the principle of boiler maintenance and stability. The water spraying device installed in the return water inlet of the hot water boiler greatly reduces the first flush of the return water. The return water first contacts the flue pipe and then the furnace liner, which increases the water temperature of the return water contacting the furnace liner. Avoid local water hammer phenomenon. This series of boilers are compact in structure and easy to install and transport. It has been thermally debugged (fuel) before leaving the factory, and it can run stably no matter when it is started or in operation. The boiler is equipped with a high-quality circulating water pump imported burner, fully automatic program control, and a high degree of automation. The boiler can achieve the best combustion effect.
The automatic hot water boiler adopts scientific product design, advanced processing technology and strict quality control. All boiler equipment produced by our factory has a continuous operating life of more than 10 years. The radiant heating surface of the gas boiler is a fully corrugated furnace, and the convection heating surface adopts threaded smoke pipes. The heating surface is large. The boiler has sufficient heat output and the thermal efficiency can reach more than 92%, which is higher than the specified standard. Zozen Boilers has insisted on producing high-quality boiler products for many years, and has reached friendly cooperation with customers in many countries and regions, and has been unanimously appreciated by users!