Tubular flow boiler definition

　　The tubular boiler is composed of the boiler body (including the upper and lower headers, tubes, etc.), external steam-water separator, water pump, oil pump, burner and other components. The water supply pump supplies water at one end of the pipeline, and the water passes through the heating water section and the evaporation section in the pipeline to generate the required steam.

　　The tubular boiler is different from the vertical water tube natural circulation boiler. It has no steam drum. In essence, the tubular boiler is a vertical straight water tube boiler.

The difference between a tubular boiler and a common gas boiler

　　Most of the common gas boilers on the market are horizontal fire tube boilers. Compared with tubular boilers, although both are oil-fired gas boilers, they are actually quite different. Next, we will compare from the following five aspects. .

　　1. Horizontal fire tube boilers are more suitable for uninterrupted industrial use of steam:

　　From the above definition of the tubular boiler, it can be seen that the structure is simple, the water volume is small, and the steam production is fast; the horizontal fire tube boiler has sufficient output, strong load adaptability, and more stable long-term operation. Under the same displacement, the tubular boiler is more suitable for enterprises that use intermittent steam, such as ironing clothes, steaming rice, etc. However, most industrial enterprises require continuous and uninterrupted use of steam, and are more suitable for long-term stable operation of horizontal fire tube boilers.

　　2. The horizontal fire tube boiler has higher steam quality and better energy saving effect:

　　An important role of the boiler drum is to separate steam and water and purify steam to ensure the quality of steam. In the definition of the tubular boiler, it can be seen that there is a lack of steam drum, so the separation of steam and water cannot be carried out. Steam quality requirements specified in the General Technical Conditions for Boilers.

　　In addition, the overall system of the tubular boiler is relatively compact, and the energy-saving equipment is not perfect. At the same time, the high water content of the steam is not conducive to the full utilization of heat, and the thermal efficiency of the boiler is low, which cannot play a good role in energy conservation and environmental protection.

　　3. The water treatment cost of horizontal fire tube boiler is low:

　　Tubular flow boilers have high requirements for water quality, and normal water softeners and thermal deaerators cannot meet the requirements, and chemicals need to be added, which means that the water treatment costs of tubular boilers are high; The furnace body is scrapped. The water quality requirements of gas-fired boilers are relatively low. Referring to GB1576-2008 industrial boiler water quality standards, softened water treatment technology or resin filters are generally used.

　　4. Horizontal fire tube boilers are easier to operate and maintain:

　　The volumetric heat load of the tubular boiler furnace is large, and the water is heated to evaporate in one tube. The cycle ratio is low, close to 1, and the heat transfer may deteriorate, resulting in tube burst and fatigue cracks. Therefore, the tube wall temperature should be strictly controlled within the safe working range during boiler operation. In addition, due to the compact boiler structure and poor maintainability of the tubular boiler, once the body is damaged, it can only be replaced with a new boiler, and the boiler life is generally 7-8 years.

　　The horizontal fire tube boiler adopts an intelligent control system to realize fully automatic and safe operation. It is equipped with automatic water level adjustment, high and low water level alarm, overpressure alarm, extremely low water level shutdown and other safety protection functions. It is easy to maintain and durable. The service life of the boiler body can be extended. for about 20 years.

　　5. The horizontal fire tube boiler has a larger capacity range:

　　It is generally believed that the evaporation capacity of the tubular boiler is suitable to be below 0.5t/h. The horizontal fire tube boiler capacity range can reach 20t/h.