camerabas.blogg.se - Badcock and wilcox boiler ppt file

Accordi chitarra.The company was founded in 1867 in Providence, Rhode Island, by partners Stephen Wilcox and George Babcock to manufacture and market Wilcox's patented water-tube boiler. Water level must be carefully watched during the operation of the Babcock and Wilcox boiler. In the case if feed water is not continuously supplied even for a short period of time, the boiler gets overheated.

Continuously supply of feed water is required for the working.

That’s why water treatment is must before feeding into the boiler. In case of impure and sedimentary water, scale may deposit in the tubes and this leads to overheating and bursting of tubes.

It is not much suitable for impure and sedimentary water.

Inspection of this can be done anytime during its working.

It is the only boiler that is used to generate large quantity of heat in power stations.

Replacement of defective tubes is easy.

The high pressure steam so generated is used to produce electricity. The Babcock and Wilcox boiler are generally used to produce high pressure steam in power generation industries.

The superheated steam from the steam stop valve is either collected in a steam drum or made to strike on the steam turbine for electricity generation.

It increases the temperature of steam to desired level and transfers it to the steam stop valve.

The superheater receives the water free steam from the anti-priming pipe.

This anti-priming pipe filters the water content from the steam and allows only dry steam to enter into superheater.

An anti-priming pipe is provided in the drum.

The steam generated is moved upward and through up take header it gets collected at upper side in the boiler drum.

As the hot flue gases come in contact with water tubes, it exchanges the heat with water and converts it into steam.

The coal burning on the grate produces hot flue gases and it is forced to move in zigzag way with the help of baffle plates.

The water present in the inclined water tubes gets heated up by the hot flue gases.

First the water starts to come in the water tubes from drum through down take header.

Now let’s discuss the working of Babcock and Wilcox boiler step by step. The Babcock & Wilcox boiler is built in two general classes, the longitudinal drum type and the cross drum type.

The following brief description of the Babcock & Wilcox boiler will clearly indicate the manner in which it fulfills the requirements of the perfect steam boiler already enumerated.