BOILERBOILER

DEFINATIONDEFINATION

A Boiler is a closed vessel in which heat produced by the combination of fuel is transferred to water for its conversion into steam at desired temperature and pressure.

Use.Use.The steam produced by the boiler my be supplied to steam engines or turbines for power generation,indusrial process work,heating installations and hot water supply etc.

CLASSIFICATIOCLASSIFICATIONS NS

OF OF BOILERSBOILERS

FULTON SOURCE OF HEAT.ELECTRIC STEAM BOILERWATER TUBE AND FIRE TUBE.NATURAL CIRCULATIONS AND FORCED CIRCULATION.HORIZONTAL,VERTICAL OR INCLINED.SINGLE TUBE OR MULTI-TUBE.STATIONARY OR MOBILE.EXTERNALLY FIRED AND INTERNALLY FIRED.

Boiler as a Boiler as a mechatronics systemmechatronics system

Boiler is mechatronics system as it mechatronically controls

Heat level

water level

Pressure level

Mechatronics SystemMechatronics System

A system is said to be mechatronics system if it ;

Contain built in inteligence.

Control system.

Can perform required action without

human interference.

ELEMENTS OF ELEMENTS OF MECHTRONICS SYSTEMMECHTRONICS SYSTEM

SENSOR

SIGNAL CONDITIONER

A/D CONVERTER

MICRO CONTROLER

D/A CONVERTER

CORRECTION UNIT

SENSORS IN BOILERSENSORS IN BOILER

Heat sensors

Water level sensors

Pressure sensors

Wetness sensors

Heat sensorHeat sensor

A heat sensor sense the heat and send error signal to the microcontroller which take the desired action

Water level sensorWater level sensor

Water level sensor is a sensor which continously measures the amount of water in a boiler

Pressure sensorsPressure sensors

Pressure sensors are measures the pressure in steam line and in boiler

Control unitControl unit

Signal conditioner

a/d converter

Micro controllers

d/a converter

Signal conditionerSignal conditioner

Signal conditioner manipulates the error signal from the sensor in the condition which is suitable for micro controller

usually In boiler control system a signal conditioner is differential amplifier

A/D & D/A A/D & D/A CONVERTERSCONVERTERS

They perform analog to digital & digital to analog conversions In order to make the error signal suitable for micro processors and correction element

Micro controllersMicro controllers

It decides what action is to be taken in order to achieve the desired conditions.

Correction unitCorrection unit

It produces a change in the process to correct or change the controlled conditions.The actuators is an other name of correction unit it provides the power to control action.

Actuators in boilerActuators in boiler

Water relays

Thermostats

Pressure relays

MORE TYPESMORE TYPES

Simple vertical boiler

Fraser culman boiler

Co-chran boiler

Lancashire boiler

Superheater

La-Mont boiler

FULTON ELECTRIC FULTON ELECTRIC STEAM BOILER.STEAM BOILER.

WORKING

STARTING OF BOILER.STARTING OF BOILER.

Open the steam valve.

Open all the valves in the water feed line.

Open water gauge valves.

STARTING OF BOILER.STARTING OF BOILER.

Switch on both main power switches.

Switch on the boiler control circuit using the switch on the top of control pannel box.

INSTRUCTIONS

Carry out the Carry out the following operationsfollowing operations

Each morning start the boiler and generate not more than 5 p.s.i.g. steam, then switch off the boiler.

Open the boiler blow off valve for approximately 5 seconds then closed the valve.

Open the water guage blow off valve for 5 seconds.

MAINTENENCEMAINTENENCE

Weekly.

Three Monthly

Semi Annually

Water tube and fire Water tube and fire tubetube

There are two ways in which water can be heated for being converted into steam.