Adjoining boiler room:
Construction: Babcock and Wilcox boiler with longitudinal drum. It consists of a drum connected to a series of front end and rear end header by short riser tubes. To these headers are connected a series of inclined water tubes of solid drawn mild steel. The angle of inclination of the water tubes to the horizontal is about 15° or more.
Working: The fire door the fuel is supplied to grate where it is burnt. The hot gases are forced to move upwards between the tubes by baffle plates provided. The water from the drum flows through the inclined tubes via down take header and goes back into the shell in the form of water and steam via uptake header. The steam gets collected in the steam space of the drum. The steam then enters through the antipriming pipe and flows in the superheater tubes where it is further heated and is finally taken out through the main stop valve and supplied to the Steam turbine or Steam engine when needed.
The pressure of steam in case of cross drum boiler may be as high as 100 bar and steaming capacity upto 27000 kg/h.At the lowest point of the boiler is provided a mud collector to remove the mud particles through a blow-dawn-cock.
The tubes can be cleaned or replaced through hand-holes that are place ahead of each tube. The collecting boxes, on the boilers front side, are in the down-end connected to a mud disposal box with a blow down valve. The upper end of the collecting boxes by means of elbowed pipes connected to the lying steam drum. The collecting boxes at the water tubes rear side are closed at both ends. From the upper ends are tubes connected to the steam drum above the water level. At normal conditions the water level will be little below the mid-point of the steam drum.
Boiler Fittings and Accessories:
A boiler feedwater pump is a specific type of pump used to pump feedwater into a steam boiler. The water may be freshly supplied or returning condensate produced as a result of the condensation of the steam produced by the boiler. These pumps are normally high pressure units that take suction from a condensate return system and can be of the centrifugal pump type or positive displacement type.
Steam locomotives and the steam engines used on ships and stationary applications such as power plants also require feedwater pumps. In this situation, though, the pump was often powered using a small steam engine that ran using the steam produced by the boiler. A means had to be provided, of course, to put the initial charge of water into the boiler (before steam power was available to operate the steam-powered feedwater pump). The pump was often a positive displacement pump that had steam valves and cylinders at one end and feedwater cylinders at the other end; no crankshaft was required.
A duplex steam pump has two sets of steam and water cylinders. They are not physically connected but the steam valves on the first pump are operated by the movement of the second pump's piston rod, and vice-versa. The result is that there are no "dead spots" and the pump is always self-starting.
Steam injector, eductor-jet pump or thermocompressor is a type of pump that uses the Venturi effect of a converging-diverging nozzle to convert the pressure energy of a motive fluid to velocity energy which creates a low pressure zone that draws in and entrains a suction fluid. After passing through the throat of the injector, the mixed fluid expands and the velocity is reduced which results in recompressing the mixed fluids by converting velocity energy back into pressure energy. The motive fluid may be a liquid, steam or any other gas. The entrained suction fluid may be a gas, a liquid, a slurry, or a dust-laden gas stream.
Metropolitan 6-1/2O or 6-1/2G Double-Tube Injectors or parts.
The 6-1/2O, "1898" model, and 6-1/2G are lever style injectors with a capacity of 350 gallons at 80 Lbs at a 2 foot lift. Fittings are 3/4 inch.
The steam is turned on by a screw spindle valve. It has three fixed nozzle tubes, A, B, F. A disc relief-check valve, C, and a wing check.
Blacksmith Scene (also known as Blacksmith Scene #1 and Blacksmithing Scene) is an 1893 American short black-and-white silent film directed by William K.L. Dickson, the Scottish-French inventor who, while under the employ of Thomas Edison, developed the first fully-functional motion picture camera.