Nonmetallic compensator special fabric material (nonmetallic fabric) is called desulphurization ring belt, non-metallic fabric belt and so on. It is mainly made of multi layer soft material. It has many advantages, such as wide range of temperature resistance, high pressure resistance, strong corrosion resistance, good flame retardancy, sound absorption and flexibility. Compared with the traditional metal bellows, it avoids the hard force transfer produced by the connection, eliminates the vibration of the pipe, solves the problem of the compensation for the thermal expansion and contraction of the ventilator and the difficult position offset of the metal parts. It can also play a protective role in the accident. And in transportation, installation, cost, maintenance and many other aspects far superior to metal bellows. According to the material classification and characteristics of non-metallic fabric skins (circles), one is silica gel skin and the other is fluorine rubber skin. Silica gel skins generally make the wind tunnel fiber fabric compensator with low temperature tolerance increase in insulation layer after use at less than 600 degrees Celsius. The temperature compensation of fluorine rubber skin used in extreme environment is less than 1200 degrees Celsius.
Non-metallic compensators are usually called fabric compensators, often used in the import and export of blower and air guide. The flexible band is usually composed of canvas, gummed canvas and ceramic canvas. With the development of fan industry, it is not resistant to aging, and it is not resistant to corrosion. Before the compensator manufacturers often use flexible materials can no longer meet the requirements of modern industrial environment. According to the modern social fan factory and the environment used, our company added fireproof cloth, glass fiber cloth, alkali free cotton cloth, tetrafluoro cloth, tetrafluoro film and three ethylene propylene material, and added the waterproof, corrosion protection and good sealing characteristics of the flexible belt.
The non-metallic Compensator now occupies a large part of the compensator product. The overall compensator is divided into metal bellows compensator and non-metallic Compensator. Metal bellows compensators are commonly used in pressure pipelines. However, non-metallic compensators are generally used for the low pressure of wind and flue gas pipelines. The non-metallic Compensator has the unparalleled advantages of metal corrugated compensator.
Nonmetallic compensator special-purpose fabric materials (non metallic fabric) are partly made of fluororubber cloth, polytetrafluoroethylene film, alkali free glass fiber cloth, stainless steel screen and sealed insulation filler, which are carefully prepared by special processes. Fluororubber, polytetrafluoroethylene film, and alkali free glass fiber cloth are made. It has good sealing and acid resistance.
The skin should be resistant to high temperature 300 C, the breaking strength is more than 4800N/50mm, and the swelling strength is more than 3.0MPa. It has certain corrosion resistance characteristics and excellent aging resistance.
Skin from inside to outside order: high temperature glass fiber cloth - polytetrafluoroethylene - high temperature glass fiber cloth - polytetrafluoroethylene - fluororubber cloth - stainless steel wire mesh; in addition, the internal flange position of the flange needs to be placed a layer of stainless steel wire mesh to prevent the boiler running, the internal heat insulation of the flange is sucked away.