Introduction to principle of WNS horizontal oil-fired gas boiler of Shangneng

WNS horizontal oil-fired gas boiler produced by Zhejiang Shangneng Boiler Co., Ltd. is a shell type internal combustion three-return all-wet back fire tube boiler designed and produced by our company according to domestic and foreign advanced technology and experience, which can both fuel and gas.

1. Horizontal internal combustion three-return wet-back structure

This series boiler is a horizontal internal combustion three-return wet-back structure, which is mainly composed of furnace bile, recombustion chamber, firework tube bundle and front and rear smoke box, and combustion equipment is installed in the front of the boiler. The boiler main engine is a whole structure, the burner is assembled on the front smoke box cover, the body is mainly arranged heating surface and combustion chamber, with reasonable structure, compact, low steel consumption characteristics, the furnace adopts the offset waveform furnace bladder, the insulation layer adopts the new lightweight heat insulation material, the outer packaging adopts stainless steel plate. The performance, weight, structure size and appearance of the boiler are significantly advanced and beautiful compared with the domestic products with the same capacity. The boiler water supply equipment is arranged on the boiler base on the right side of the boiler so that it is integrated with the main engine, and there is no need to make another foundation.

2. All wet back smoke three return structure

The combustion flame sprays from the front burner into the rear of the furnace, radiates heat to the furnace and the return chamber, and forms an initial return journey. After the high temperature flue gas is fully burned in the recombustion chamber in large space, it turns 180 degrees and returns, flows from the threaded flue pipe to the front flue box, convective heat release to the wall of the flue pipe, and forms the second return journey. The flue gas turns 180 degrees in the front smoke box, flows from the threaded smoke pipe to the rear smoke box, and releases heat by convection in the pipe to form the third return journey. After the flue gas flows through the rear smoke box, the energy saver absorbs the waste heat, and the temperature drops to about 140℃, and then it is discharged into the atmosphere from the chimney. The furnace bladder, recombustion chamber and threaded smoke pipe are all immersed in water, and the overall design of 100% water enveloping fire improves thermal efficiency and extends the service life of the boiler.






3. Large diameter corrugated furnace

The combustion chamber adopts the full-corrugated furnace structure formed by large diameter hot rolling, with large combustion space to ensure full combustion of fuel; The 100% corrugated furnace is beneficial to absorb thermal expansion, improve flexibility, reduce thermal stress, has good thermal scalability, meets the free expansion of the furnace after heating, and extends the service life of the boiler; It has a turbulent effect on the high temperature flue gas, strengthens the heat transfer, increases the heating area and improves the thermal efficiency of the boiler.

4. Low position of combustion chamber

When designing the boiler, the combustion chamber (furnace bladder) is arranged in the middle of the lower position of the boiler body, so that the temperature of the furnace bladder is at the low temperature water level, and the safe water level in the boiler is increased to the top and the water shortage fault is reduced to the lower limit. When the boiler water level fluctuates, it will not cause the risk of dry burning. The smoke pipe can be arranged symmetrically, so that the thermal stress is symmetrical and the boiler is evenly heated. And the formation of two middle up on both sides of the downward water circulation circle, the bottom of the formation of a relatively "stable" settling area, but also conducive to daily sewage

5. Symmetrical arrangement of self-cleaning threaded smoke pipe

All the smoke pipes of the boiler are self-cleaning threaded smoke pipes, and the left and right symmetrical arrangement, so that the force inside the furnace is uniform, improve the stress state of the tube plate before and after the hot water boiler model; When the flue gas flows, it shows highly turbulent movement under the disturbance of the thread of the inner wall of the flue gas pipe, which enhances the convective heat transfer degree, strengthens the heat transfer effect and improves the thermal efficiency of the boiler. The control of thread depth is very important when the thread pipe is processed. The test shows that the thread depth of the pipe has a great influence on the heat transfer performance. When the thread depth is reduced from 2mm to 1mm, the heat transfer coefficient will be reduced by 20%.

6. Steam boiler large water capacity, large steam space

Steam boiler large water capacity, large steam space, especially suitable for large load variation range of users (such as tobacco, food, large hotels, etc.). The large steam space allows the steam to leave the water surface at a low speed, and is equipped with a reasonably designed built-in steam separator to ensure a stable output of high-quality steam and meet the needs of users for steam quality.

7. Open smoke box

The front and rear smoke boxes are connected with hinges, which can be easily opened, and the inspection, maintenance and cleaning inside the boiler are more convenient and easy. The heat insulation and insulation of the double-door wall-mounted gas boiler not only reduce the panel temperature but also improve the thermal efficiency.

8. Rear smoke box drain device

The condensate in the smoke box should be discharged at any time to prevent the corrosion of the tube plate and prolong the service life of the boiler.

9. Rearview mirror device

The rear-view mirror device is designed and configured for easy observation of fuel combustion at any time.

10. Extend the heating surface

Energy-saving device can be configured according to user requirements to further reduce the exhaust temperature, absorb sensible heat and latent heat in the flue gas, and improve the thermal efficiency of the boiler.

11. Beautiful exterior design

Using new thermal insulation materials and high-quality stainless steel plate packaging, light weight, good thermal insulation performance, beautiful and generous, durable, no corrosion, to provide high-quality products for the elegant environment.

Organic combination of mechanical and electrical integration appearance, ingenious novel, compact structure, less space, convenient transportation, installation.

12. Configure the inlet burner

All boilers are equipped with all kinds of imported burners, such as Weisol, Oilon, Riyalu, Black & Black, Liwei, etc., using automatic proportional adjustment, atomization methods are pressure atomization, low pressure air atomization, rotary cup atomization, applicable fuels are light diesel, heavy oil, natural gas, pipeline gas, liquefied gas, biogas, special flammable harmful gases, etc. Dual-fuel burners can be configured according to user needs, which can be both fuel and gas. Automatic combustion regulation, ensure full combustion, reduce pollution.

Therefore, the WNS horizontal oil-fired gas boiler is an ideal green environmental protection product with high efficiency, low consumption and low pollution.

Shangneng WNS horizontal oil-fired gas boiler adopts the wet-back structure of offset furnace bladder. The high temperature flue gas successively washes the second and third return flue gas pipes, and then drains into the atmosphere from the rear flue gas chamber through the chimney.

The boiler is equipped with movable front and rear smokebox covers to facilitate boiler maintenance. The boiler is equipped with burners with good technical performance, and adopts advanced technologies such as automatic proportional adjustment of combustion, automatic adjustment of water supply, program start and stop, and automatic operation, and has automatic protection functions such as high and low water level alarm and extremely low water level, ultra-high steam pressure, flaring out.

Shangneng WNS horizontal oil-fired gas boiler has the advantages of full combustion, pollution-free emission, convenient operation and easy installation. High thermal efficiency, large output, strong load adaptability, high degree of automation, easy operation, safe and reliable operation; Can use a variety of fuels: light oil, heavy oil, natural gas, city gas, liquefied petroleum gas; Investment province, low operating costs: no need to prepare any dust removal and other auxiliary equipment, occupy less land, save capital investment costs, no need to large area of oil storage and storage site, efficient output, saving operating costs; It can be arranged inside or outside the building to provide central heating, which is widely used in central heating communities, hotels, commercial buildings, colleges and universities, banks, large and medium-sized offices and clean villa communities.

Shangneng WNS horizontal oil-fired gas boiler is an ideal green environmental protection product with high efficiency, low consumption and low pollution.

1. The boiler is equipped with movable front and rear smoke box covers, and the boiler is convenient for maintenance;

2. The boiler is equipped with a burner with good technical performance;

3. Full combustion, pollution-free emission, convenient operation, easy installation;

4. High thermal efficiency, large output, strong load adaptability, high degree of automation, easy operation, safe and reliable operation;

5. Can use a variety of fuels: light oil, heavy oil, natural gas, city gas, liquefied petroleum gas;

6. Investment province, low operating costs: no need to prepare any dust removal and other auxiliary equipment, occupying less land, saving infrastructure investment costs, no need to large area of oil storage and storage site, saving operating costs;

7. The boiler operation site is flexible and can be arranged inside or outside the building to provide central heating;

8. Wide range of application, can be used in central heating community, hotels, commercial buildings, colleges and universities, banks, large and medium-sized offices and clean villa community.