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The characteristics of the hearth, wall and tube of tube furnace

The operation of the tube furnace requires the assistance of a variety of equipment accessories, so before the equipment is used, we need to understand its accessories to ensure its use. So next, we will introduce the characteristics of the furnace, furnace wall and furnace tube of the tube furnace.

  The main purpose of the tube furnace is to be used as a heating material, and the heating process is mainly carried out in the furnace. The furnace of the tube furnace is enclosed by the furnace wall, the furnace roof and the furnace bottom. The three are called the furnace lining. The relationship between the performance of the furnace lining It depends on the heating capacity of the tube furnace. The furnace tube is a pipe through which the heated medium absorbs heat, and is divided into radiant furnace tube and convection furnace tube. In addition, on the outer layer of the furnace lining, there is a layer of bearing frame that is tailor-welded and assembled from various steel materials to ensure the safety of workers during equipment maintenance.
Vacuum tubular furnace
  The furnace wall, furnace roof and furnace bottom form a tube furnace hearth. All three can be called furnace lining. Since the medium is heated here, it is necessary to ensure that the furnace lining can maintain sufficient strength and stability under high temperature and load conditions. The furnace lining is required to be able to withstand the erosion and erosion of the flue gas, and at the same time have sufficient thermal insulation and air tightness. To achieve these performance conditions, the structural requirements of the furnace lining are relatively high. The furnace lining is usually composed of a refractory layer, an insulation layer, a protective layer and a steel structure. Among them, the refractory layer directly bears the erosion and erosion of the high-temperature airflow in the furnace, and is usually formed by masonry, ramming or pouring of various refractory materials; the insulation layer is usually formed by various porous insulation materials by masonry, laying, filling or pasting Its function is to greatly reduce the heat dissipation loss of the furnace lining and improve the on-site operating conditions; the protective layer usually adopts building bricks or steel plates, and its function is to maintain the airtightness of the furnace lining and protect the insulation layer formed by porous insulation materials from damage.

  Regarding the furnace tube we said above, there are radiant furnace tubes and convection furnace tubes, which are distinguished according to different heating methods. Radiant furnace tubes are used in radiant chambers, and convection furnace tubes are used in convection chambers. In order to enhance heat transfer, convection Tube-pulled brick furnace walls are often installed horizontally with finned tubes or nail-head tubes. For the entire tube furnace equipment, its components are attached to the steel structure, including the furnace lining we started talking about. In addition, the loads formed when the equipment is overhauled are also applied to it, so the tube furnace can be The steel structure is regarded as a load-bearing framework to ensure the safety of personnel and overall equipment. In reality, the performance requirements of this component are also higher.

  The above are the characteristics of the hearth, furnace wall and furnace tube of the tube furnace. According to their characteristics, the use of accessories and performance can be more accurate, so as to ensure the efficiency of use.

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