Non pneumatic ball valve has good comprehensive performance, which makes it widely used in many engineering fields. In the pipeline system, if there are thermal stress caused by temperature change, local stress caused by equipment vibration and fixed support, and stress caused by system installation deviation at the same time, the use of rigid connection will inevitably lead to deformation or damage of the pipeline system at particularly weak points. If the flexible non pneumatic ball valve is used, this damage can be avoided.
This is related to the unique movement form of non pneumatic ball valve. These forms of motion determine the multi-dimensional displacement performance of non pneumatic ball valves. Pressure bearing single wave and multi wave pneumatic ball valves play an irreplaceable role in some special operating conditions.
For example, the circulating fluidized bed boiler needs to absorb large differential expansion and torsional deflection angle in a very compact space, and the pneumatic ball valve can no longer meet the demand for differential expansion compensation. The non pneumatic ball valve has the advantages of universal compensation and large displacement absorption, no elastic reaction, low external temperature of the non pneumatic ball valve, noise reduction, vibration isolation, easy installation and maintenance, excellent high temperature resistance, corrosion resistance and wear resistance, and is widely used in circulating fluidized bed boilers. The non pneumatic ball valve is mainly used in the places with large size, high temperature and large three-way expansion difference on the boiler body, which is mainly composed of six parts: frame, stainless steel wire mesh, thermal insulation filler layer, thermal insulation dust boot, skin, wear-resistant layer, etc