Machine Parts

Boiler operation Boiler working procedure: The boiler is supplied with water by a feed pump. Water enters the boiler through a feed check valve. When the water reaches normal water level which is approximately the middle of the water gauge glasses, the feed pump is stopped by the dual control. The burner is bolted to the hinged front door. Air required for combustion is provided by a forced draught fan which is integral with the burner unit. The furnace receives heat radiant from the flame and the hot gases from the flame give up heat to tubes in the second pass as they travel to the front chamber. Gases turn into front chamber and give up more heat to the tubes in the third pass as they travel to the rear chamber. The gases leave the boiler by the chimney at the top of the rear chamber. As the steam pressure rises the pressure has been shown in pressure gauge. When the pressure is sufficiently high the main stop valve can be opened to allow steam to pa

                          Boiler Boiler: A steam boiler is usually a closed vessel made of steel. Its function is to transfer the heat produced by the combustion of fuel to water and ultimately to generate steam. Types of boiler:            1. Fire tube or smoke tube boiler            2. Water tube boiler                                                                                                             Figure: Boiler Fire tube boiler: In fire tube steam boilers, the flames and hot gases, produced by the combustion of fuel pass through the tubes which are surrounded by water. Fire tube boilers are generally used for relatively small steam capacities and low to medium steam pressure. As a guideline fire tube boilers are completive for steam rates up to 12000kg/h and pressures up to 18 kg/cm².Fire tube boilers are available for operation with oil, gas or solid fuel.