Tharmal Project File

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Training at

Guru Nanak Dev ThermalPlant

Bathinda

SUBMITTED TO:- Submitted by:-

Mechanical Dept. AMANDEEP KAURRoll no.:-21303001

Class:- B.Tech 3rdyear

1


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NTRODUCT ON

Guru Nanak Dev thermal power plant is a coal-based plant. The requirement of

coal for four units based on specific fuel consumption of 0.60 kgk!h. The conve"ing

and crushing s"stem will have the same capacit" as that of the unloading s"stem.

The coal comes in as large pieces. This coal is fed to primar" crushers# which reducethe si$e of coal pieces from %00mm to &'0mm. Then the coal is sent to secondar"

crusher through forward conve"ors where it is crushed from &'0mm to (0mm as

required at the mills. Then the coal is sent to boilers with the help of primar" fans. The

coal is burnt in the boilers. )oiler includes the pipes carr"ing water through them*

heat produced from the combustion of coal is used to convert water in pipes into

steam. This steam generated is used to run the turbine. !hen turbine rotates# theshaft of generator# which is mechanical coupled to the shaft of turbine# gets rotated

so# + phases electric suppl" is produced.

The basic requirements are,-

uel/coal )oiler 1team turbine Generator 2sh 3andling 1"stem

4nit au5iliaries 2


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H STORY

Due to high rate of increasing population da" b" da"# widening gap

between power demand and its availabilit" was one the basic reason

for envisaging the G.N.D.T.. for the state of un7ab. The other factorsfavouring the installation of thermal power station were low initial cost

and comparativel" less gestation period compared to h"dro electric

generating stations. The foundation stone of G.N.D.T.. at bathinda was

laid on &8th November &868# the auspicious occasion of '00th birth

anniversar" of the great Guru Nanak Dev 9i. The historic town of bathinda was selected for this first and

prestigious thermal pro7ect of the state due to its good railwa"

connections for fast transportations of coal# availabilit" of canal water

and pro5imit" to load center.

The total installed capacit" of the power station %%0:! with four

units of &&0:! each. The first unit of the plant was commissioned in

1eptember#&8;%. 1ubsequentl" second# third and fourth units started

generation in 1eptember &8;'# :arch &8;


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LANDMARKS

ACH VED

G.N.D.T.. won an award of =s. +.&6 crores from Govt. of >ndia for

better performance in &8ndia# :inistr" of ?nerg" for "ear &8


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WORKING OF G.N.D.T.


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CHP

(Coal

Handling

Plant)

The G.N.D.T.. units are primaril" coal-fired units and the coal consumptionat ma5imum continuous rating per unit is about '< Thr. the coal used at

G.N.D.T.. is of bituminous and sub-bituminous t"pe and this is received

some collieries of :.. and )ihar.

UNLOADING OF COAL:-

>n order to unload coal from the wagons# two =otaside Tipplers of

?lecon make are provided. ?ach is capable of unloading &( open t"pes of

wagons per hour. Normall" one tippler will be on operation while the other

will be standb". The loaded wagons are brought to the tippler side b" the

loco shunters. Then with the help of inhaul beetel one wagon is brought on

the tippler table. The wagon is tilted upside down and emptied in the hopper

down below. The tippler is equipped with the integral weighbridge machine.

The machine consist of a set of weighing levers centrall" disposed relative to

tippler. The rail platform rests on the weighing girders and free from rest ofthe tippler when the wagon is being weighed. 2fter weighing the loaded

wagons is tipped and returned empt" to the weighing girders and weighed.

Thus the difference of gross weight and the tare weight of the wagon

contents. The tipplers are run b" motors of


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!2GCN T>@?=

!hen coal reaches the plant# normal si$e of coal is about '00mm primar"

crusher &(0mm secondar" crusher ('mm coal mill pulvarisedcoal # feeded in boiler.

)efore this boiler is preheated with oil upto +'0 E# then oil suppl" is cutdown.

"


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COOL NG TOWERS

Eooling Towers of the power plant are the landmark of the bathinda cit"

even for a far distance


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T!"in#$

The steam rotates the turbine blades at a high speed of +000 rpm. This

turns the power generator# which is directl" connected to the turbines# and

electricit" is produced as a result. This electric power is then deliveredalong power transmission lines and through substations to the homes of

the customers.

Turbine is a prime mover for the Generator in the power plant. >n steam

turbine# the potential energ" of steam is transformed into kinetic energ"and later is transformed into the mechanical energ" of the rotation of the

turbine shaft. The common turbines are ,-

&. IMPULSE TURBINE :->n this t"pe of turbine# steam e5pands in the

no$$les and its pressure does not alter as it moves over the blades.

(. REACTION TURBINE:- >n this t"pe of turbine# the steam e5pand

continuousl" as it passes over the blades and thus there is a gradual

fall in pressure during e5pansion.

$


10/121%

Different t"pes of steam turbines are used in Thermal ower lant but the ones which are

used at G.N.D.T.. are categori$ed as follows,-

Sr. No. Type Of Turbine Turbine !" G.N.D.T.P

&. 3ori$ontalFertical 3ori$ontal

(. 1ingle:ulti-c"linder :ulti-c"linder /+ c"linder

+. >mpulse=eaction >mpulse

%. EondensingNon-condensing Eondensing

'. =eheatNon-reheat =eheat

1%


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Rotor

T&e tu'b(-)e*e'+t(' '(t(' i, (')ed '(m + ,i*)e /ie0e ( ,/e0i+

0&'(mium *i0e +*d m(ybde*um +(y ,tee 0+'euy &e+t t'e+ted t(

(bt+i* t&e 'eui'ed me0&+*i0+ +*d m+)*eti0 /'(/e'tie,. T&e (')i*)

u*de')(e, + ,e'ie, ( ,t'i*)e*t u+ity 0(*t'( te,t, be('e it i, +00e/ted(' u't&e' /'(0e,,i*). (*)itudi*+ ,(t, +'e t&e* mied '+di+y i* by

'(t(' b(dy +*d 5i*di*). T&e 6ed 0(i, +'e &ed i* t&e ,(t, +)+i*,t0e*t'iu)+ ('0e by 5ed)e, b(t& m+)*eti0 +*d *(*-m+)*eti0 ty/e, bei*)

u,ed t( e*,u'e + bette' 5+7e '(m 8u9 di,t'ibuti(*. T&e,e 5ed)e,

i*di7idu+y 6tted +*d d'i7e* i*t( d(7et+i (/e*i*), m+0&i*ed i* t&e '(t('.

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kYou

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