Precautions for installation of non pneumatic ball valve in circulating fluidized bed boiler Gongyi Dongfeng Equipment Manufacturing Co., Ltd. is a manufacturer of waterproof casing, pneumatic ball valve, expansion joint, power transmission joint, sleeve pneumatic ball valve, pneumatic ball valve, pipe pneumatic ball valve, non pneumatic ball valve, pneumatic ball valve, stainless steel pneumatic ball valve, non flexible pneumatic ball valve, Fabric pneumatic ball valve and other pneumatic ball valve models. Now we will introduce the installation precautions of non pneumatic ball valve in circulating fluidized bed boiler.
Non pneumatic ball valve is composed of non skin, thermal insulation part, flange, rib plate, bolt, stainless steel mesh, ceramic fiber rope or pillow shaped sealing material, etc. The skin is made of temperature resistant valve and glass cloth. Non pneumatic ball valve, also known as non pneumatic ball valve, is mainly used to absorb the relative displacement of two components with relative displacement and seal the connecting channel between two components with relative displacement. Non pneumatic ball valve is an important part of circulating fluidized bed boiler. Its installation quality directly affects the sealing of circulating fluidized bed boiler, and then affects the safe and stable operation of the boiler. Therefore, it is very important to study the installation of non pneumatic ball valve.
Due to the structural characteristics of the circulating fluidized bed boiler, several large components have their own fixed expansion centers, such as the furnace, the tail shaft flue, and the cyclone separator. In this way, pneumatic ball valves are required at the connection of the two components, which not only provide a connection seal, but also make up for the relative displacement of the two components, The service life of non pneumatic ball valves is generally about two to three years. At present, all boilers are equipped with non pneumatic ball valves. Circulating fluidized boilers are equipped with non pneumatic ball valves at the connection of furnace outlet and cyclone separator population, cyclone separator outlet, cyclone separator outlet flue and tail shaft flue inlet, cyclone separator feed leg and return valve inlet, return valve outlet and return valve diagonal leg, etc. The number of non pneumatic ball valves used varies according to the boiler capacity.
During the field installation of non pneumatic ball valve, because the non pneumatic ball valve has poor rigidity, the fixing parts of the non pneumatic ball valve are not allowed to be removed during installation. They should be removed after the installation and before the trial run of individual parts. During hoisting, the non pneumatic ball valve shall be hoisted in place according to the sequence of the installed parts. It is not allowed to hoist the non pneumatic ball valve after the equipment in front of and behind the non pneumatic ball valve is put in place, which will be too small for hoisting due to the reserved position. When the steel wire rope is used for binding and hoisting, it is necessary to wrap the steel wire rope with a valve or thin iron sheet to prevent the burr of the steel wire rope from puncturing the skin of the non pneumatic ball valve. It is also recommended to temporarily install a T-shaped lifting lug on the non pneumatic ball valve. This method can ensure the symmetry of the hoisting and not damage the skin of the non pneumatic ball valve.