In cochran boiler first the fuel is inserted into the firebox and placed on the grate. Therefore, this boiler requires a large amount of heating surface and large grate area to. Locomotive boiler construction working and application with diagram. This design allows for air to enter and escape during filling and draining of the boiler. On this channel you can get education and knowledge for general issues and topics. The construction of this is the same as any fire tube boiler with a little difference, and that differences i will mention below in this article also at the end of the article, i will give you the pdf downloadable link of this. The maximum pressure range 21bar and streaming rate is as. The reference text on which this subcourse is based is a broad presentation of locomotive structure and a basic outline of maintenance. Diagram illustrating the manufacture of locomotive engine and tender 2, 3 2. Locomotive boiler is a horizontal drum axis, multitubular, natural circulation, artificial draft, forced circulation, mobile, medium pressure, solid. Generally, it moves with a velocity of 60 to 70 kmhour. Construction and working principle of babcock and wilcox boiler. Because this boiler has 116 general fire tubes and 38 superheated fire tubes.
Locomotives boiler are divided into three main parts smoke box, shell box and fire box. Both gas and oil fired boilers use controlled combustion of the fuel to heat water. It is used in railway locomotive engines and in marine. It a internally fired boiler because the furnace is placed inside the boiler.
Locomotive boiler it is multitubular boiler used in railway engines. Posted by coaldust2026 on monday, february 8, 2010 3. Locomotive boiler is horizontal drum axis, artificial draft, natural circulation, multitubular, mobile, forced circulation, medium pressure, solid fuel fired fire tube boiler with the internally fired furnace it is used in marine engines and railway locomotive engines. Parts, construction, working, advantages and applications locomotive boiler locomotive boiler is horizontal drum axis, artificial draft, natural circulation, multitubular, mobile, forced circulation, medium pressure, solid fuel. Steam locomotive boiler construction classic trains. The barrel comprise of a rectangular fire box at one end and a smoke box at the other end. Report of an examination by a competent person of a boiler under normal steam pressure 32 6. Cochran boiler main parts, working, advantages and. With the pressure exerted by the steam, the piston is moved. Generally, a babcock or wilcox boiler means it is an inclined water tube boiler. The flue gases flows through the fire tube, situated inside the boiler shell, so it is a fire tube boiler.
The design, construction and working of locomotive boilers book. The critical pressure is the pressure at which the liquid and gas phase are at equilibrium. As the hottest part of a locomotive boiler is the firebox, it was an effective design to use a watertube design here and a conventional firetube boiler as an economiser i. The benson boiler is a water tube boiler, works on the basic principle of critical pressure of water. The main requirement of this boiler is that it should produce steam at a very high rate. A locomotive boiler is a device which is used to create steam from water by using heat energy. This heated water produces the steam and it is used to do useful work.
This boiler is invented by sir william fairbairn in the year 1844. The babcock and wilcox boiler are also is known as longitudinal drum boiler or. Steam locomotive construction and maintenance, describing workshop equipment and practice in the construction of modern steam railway locomotives with notes on inspection, testing, maintenance and repairs by ahrons, ernest leopold, 18661926. The construction of a water tube boiler can be equipped with cylindrical shell, vertical, firebox in the base, space for water in the center segment, and space for steam in the higher segment. In this type of boiler, all tubes usually stay straight and attached with a header. As the name denotes locomotive boiler that means these types of boiler moves with a certain velocity. Locomotive boiler they are the horizontal boiler and belong from the fire tube class of boilers. Construction and working of locomotive boiler, mechanical. The key boiler components involved in this process are the burner, combustion chamber, heat exchanger, and controls. Mechanical engineering assignment help, construction and working of locomotive boiler, constructio n and working. The locomotive boiler is horizontal, multitubular, natural circulation, internally fired, fire tube boiler.
Locomotive boiler construction working and application. Blue mountain and reading railroad 462 pacific locomotive. Steam locomotive construction and maintenancechapter ii. Locomotive boiler is a horizontal drum axis, multitubular, natural circulation, artificial draft, forced circulation, mobile, medium pressure, solid fuel fired fire tube boiler with an internally fired furnace. Our engineering staff created a complete working design using only photographs of the model thomas used on the television program. Boiler evolution 4 steam locomotive cutaway furnace convection tubes steam dome tube sheet stack. In this article, we discussed construction, working principle, advantages, disadvantages, and application of locomotive boiler. Construction and working principle of locomotive boiler online.
It is a horizontal drum axis, multitubular, natural. Here, the first of four thomas replicas poses for its official builders photograph. The steam rating in fire tube boilers doesnt exceed 2500 kg per hour and pressure is limited to 10 bars. Locomotive boiler construction, working and application.
A steam boiler is a closed vessel, generally made of steel, in which water is heated by some source of heat produced by combustion of fuel and ultimately to generate steam. Locomotive boiler is horizontal drum axis, artificial draft, natural circulation, multi tubular, mobile, forced circulation, medium pressure, solid fuel. As the name states the function of a steam boiler is very simple i. Locomotive boiler is a horizontal fire tube type mobile boiler. Babcock and wilcox boiler construction, working, application, advantages and disadvantages.
The earliest form of firetube boiler was richard trevithicks highpressure cornish boiler. P or maximum allowable working pressure is the highest. Cochran boiler consists of a cylindrical shell with its crown having a spherical shape. A firegrate is located at the firebox base as well as coal is firedup on the. Fire tube boiler definition, construction, working. Principles of steam locomotive valve systems page 2 exert torque. Report of an examination by a competent person of a boiler when cold 31 5. Fire tube boiler construction and working principle of fire tube boiler. The babcock and wilcox boiler is widely used in mines, power stations, and, in a modified form, on shipboard. A boiler is a closed vessel in which water is heated, steam is. This is a long horizontal cylinder with a single large flue containing the fire. A slightly more successful adoption was the use of hybrid watertube firetube systems. Chimney is completely eliminated in locomotive boilers because they are always in motion. Construction and working principle of locomotive boiler.
Fire tube boiler is the simplest form of the internal furnace, vertical fire tube boiler. Steam boiler types, construction and working principle. Fire tube boilers are a portable boiler and it requires a small floor space. The fire itself was on an iron grating placed across this flue, with a shallow ashpan beneath to. New construction of locomotive equipment strasburg rail road. The water enters in the boiler at just above the critical pressure so it suddenly convert into steam without generating air bubbles. Steam locomotive construction and maintenance wikisource. All of the boiler fittings discussed are important and must be operated and maintained properly to operate a boiler safely. The locomotive boiler works with the insertion of solid fuel on the grate and then igniting it through the fire hole. Thats means boiler furnace located inside the main boiler shell or barrel. Construction and working principle of vertical boiler. Locomotive boiler construction working and application with. Lancashire is a horizontal, stationary fire tube boiler.
Other different types of fire tube boiler are locomotive, lancashire, cornish, velcon, simple vertical boiler today we will look into construction or main parts, working, application, advantages, disadvantages of cochran boiler. Dieselelectric locomotives introduction an understanding of the structure of a locomotive mechanically and electrically is essential to a person attempting to perform maintenance and repair services on it. Cochran boiler working, construction, diagram, application. The working of the two cylinders produces a fairlyuniform torque on a continuous basis. The fluid is contained in the boiler drum called shell and the thermal energy released during combustion of fuel is transferred to water and this converts water into steam at the desired temperature and pressure. Construction, working, advantages and disadvantages with applications february 12, 2019 february 12, 2019 admin 0 comments boilers. Recommended steaming times for replacement of fusible plugs 33 7. It is a mobile boiler and has a high steam generation rate. A boiler is a closed vessel or container in which the fluid especially water is being heated. The grate is also placed at the bottom of the furnace and the ashpit is located below the grate. The design, construction and working of locomotive boilers. Jump to navigation jump to search steam locomotive construction the following 95 files are in this category, out of 95 total. It is a horizontal drum axis, multitubular, natural circulation, artificial draft, forced circulation, mobile, medium pressure, solid fuel fired fire tube boiler that has an internal fire furnace.
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