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Horizontal Gas Fired Hot Water Boiler Structure

 Gas-fired hot water boilers are environmentally friendly, energy-saving, safe, and fully automatic operation. They are very convenient to use. In addition, due to the encouragement of economic operation, gas-fired hot water boilers are becoming more and more popular.



The structure of a horizontal gas hot water boiler is usually a shell-type three-pass, fully wet back structure. All pressure components are symmetrical to the center of the drum, and 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 convection heating surface of this series of hot water boilers consists of two-pass and three-pass tube bundles. The front tube plate of the back-combustion chamber is connected with the furnace bladder, and the back tube plate of the back-combustion chamber adopts an ellipsoidal head and a tube plate. The turning smoke chamber on the second and third return journeys constitutes the front smoke box, and the temperature of the smoke discharged is 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 flue box of WNS series hot water boiler is arranged along the longitudinal axis of the cylinder, which not only shortens the length of the furnace body, but also prevents the chimney from being placed in the direction perpendicular to the longitudinal axis of the cylinder and condenses when the boiler starts and stops. Water corrodes the boiler body. The design of this kind of boiler mainly considers the principle of boiler maintenance and stability.



The water mixing device is installed in the return water inlet of this series of gas boilers. The return water first flushes the flue pipe bundles and then contacts the furnace liner, increasing the water temperature of the return water contacting the furnace liner. Avoid the phenomenon of local supercooled boiling. WNS type gas boiler is equipped with high-quality automatic water softener and dosing pump, which can automatically complete the whole process of water softening, dosing and resin regeneration.

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