CW SYSTEM..

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CIRCULATING WATER SYSTEM CIRCULATING WATER SYSTEM INTRODUCTION

INTRODUCTION In

In ththe e ththerermamal l cycyclcle, e, ththe e cocondndenenseser r s s aa !heat sn"# $here the %n%tl&ed heat ener'y s !heat sn"# $here the %n%tl&ed heat ener'y s re(ecte

re(ected) d) The syThe system n stem n $hch $hch $ater $ater *ed to *ed to thethe condenser that carres the re(ected heat to the condenser that carres the re(ected heat to the cooln' to$er and o+erates n a closed cycle s cooln' to$er and o+erates n a closed cycle s named as crc%latn' $ater system)

named as crc%latn' $ater system)

UNCTIONS

UNCTIONS O CIRCULATING WO CIRCULATING WAATER SYSTEMTER SYSTEM The +rmary *%ncton o* the crc%latn' $ater The +rmary *%ncton o* the crc%latn' $ater sy

syststem em s s to to cocondndenense se ththe e e-e-haha%s%st t ststeaeam m o* o* t%

t%r.r.nne e .y .y ththe e reremomo/a/al l o* o* tts s lalatetent nt heheat at o* o* condensaton n

condensaton n the condenserthe condenser) ) It also It also ser/esser/es 0

011 TTo o ccooool l tthhe e aa%%--llaarry y ccoooollnn' ' $$aatteer r nn 2late heat e-chan'ers)

2late heat e-chan'ers) 3

311 TTo co cooool tl thhe le l%%..rrccaattnn' o' ol l n tn thhe le l%%. o. oll coolers o* T%r.o4'enerator) coolers o* T%r.o4'enerator) 5 511 TTo o ccooool l tthhe e sseeaal l ool l n n tthhe e sseeaal l ooll coolers o* Generator) coolers o* Generator) 6

611 TTo so s%%++++lly ty thhe $e $aatteer *r *oor tr thhe de dss++oossaal ol o* * ash)

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71 To meet the $ater re8%rement o* re Ser/ce and M%ls9re systems)

DESCRI2TION O T:E SYSTEM

The crc%latn' $ater +%m+ ho%se has totally e'ht crc%latn' $ater +%m+s) T$o +%m+s are needed to s%++ly crc%latn' $ater *or each %nt) T$o addtonal +%m+s are "e+t as stand.y *or all the three %nts)

The cold crc%latn' $ater ;o$n' *rom the .asn o* cooln' to$er s d/erted to a +ond called !ORE<AY#) rom the *ore .ay, the crc%latn' $ater s s%++led to the s%cton +t o* the crc%latn' $ater +%m+)

The *ore .ay $ater le/el s mantaned at an ade8%ate le/el, snce lo$ le/el $ll lead to star/aton o* crc%latn' $ater +%m+s and tr++n' o* the %nt on !Condenser lo$ /ac%%m#) The $ater le/el n the *ore .ay s mantaned .et$een =7 and =0> d/sons n the scale +ro/ded)

Cold4$ater t%nnel ta"es the cold $ater to condenser o* sn'le %nt) The same t%nnel can

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also 'et the $ater *rom the stand.y +%m+, $hch s common *or t$o %nts) In the dschar'e ++e o* each +%m+, an a%tomatc ar releasn' c%m /ac%%m .rea"er /al/e s +ro/ded)

The cold4$ater t%nnel s +ro/ded $th manholes near the +%m+ ho%se and near the %nt) The cold4$ater t%nnel near the condenser d/des nto t$o se+arate channels to s%++ly $ater *or .oth $ater .o-es o* the condenser)

A%-lary crc%latn' $ater .ooster +%m+ dra$s the crc%latn' $ater *rom the condenser 4A sde nta"e channel) A%-lary crc%latn' $ater .ooster +%m+ .oosts %+ the crc%latn' $ater +ress%re and s%++ly t to +late ty+e heat e-chan'ers +ro/ded *or cooln' the a%-lary cooln' $ater) The hot crc%latn' $ater ret%rnn' *rom the +late heat e-chan'ers (ons $th o%tta"e channel o* 4A sde)

rom the condenser 4< sde nta"e channel, the crc%latn' $ater s dra$n .y l%. ol cooler .ooster +%m+ to s%++ly the cooln' $ater o* a.o%t 5>> m5_{?hr to l%. ol coolers o* T%r.ne}

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and seal ol coolers o* 'enerator) The hot $ater ret%rnn' *rom the a.o/e coolers s %tl&ed *or the ds+osal o* ash) Also a drect lne *rom the o%tta"e channel o* condenser 4< sde s ta"en to s%++ly $ater @>> m5_{?hr1 to ash}

ds+osal +%m+ ho%se)

The t$o hot $ater channels *rom the condenser (on a common hot $ater t%nnel o%tsde the t%r.ne hall) :ot $ater t%nnel carres the hot crc%latn' $ater to the cooln' to$er) Manholes $th +ro/son o* ar /ents are +ro/ded n the hot $ater t%nnels also)

rom the hot $ater t%nnel, t$o steel ++es 9nally ta"e the hot $ater to .oth sectons o* dstr.%ton system o* nat%ral dra%'ht cooln' to$er) The ncomn' nat%ral ar n the cooln' to$er cools the hot $ater and the cold crc%latn' $ater ;o$s do$n to the .asn) rom the .asn, the cold $ater ;o$s to the *ore .ay thro%'h o+en channel) lter screens are +ro/ded at the o%tlets o* the .asn to 9lter the de.rs)

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MABE U2 SYSTEM

E/en tho%'h the crc%latn' $ater s on closed cycle, the losses occ%r d%e to e/a+orat/e cooln' and the dr*t) A+art *rom the a.o/e, the $ater %tl&ed *or the ds+osal o* ash and 9re ser/ce s not reco/era.le) In order to ma"e %+ the losses, an art9cal la"e o* ca+acty 0,>,>7 m5_{s located n the north}

$est o* the +o$erho%se) It rece/es ts $ater s%++ly *rom Mnes4II thro%'h t$o ++elnes) rom the la"e, the ma"e %+ $ater s added to the *ore .ay .y 'ra/ty thro%'h a lne $th a le/el control /al/e) The same ma"e %+ lne can also rece/e the $ater drectly *rom the t$o ma"e %+ lnes @*rom Mnes4II1)

CIRCULATING WATER 2UM2

The crc%latn' $ater +%m+ s o* sn'le sta'e, /ertcal, m-ed ;o$ +%m+ o* ca+acty

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0,7>> m5_{?hr at the del/ery +ress%re o* 0)7}

B'?cm3_{) The m+eller s .elo$ the $ater le/el n}

the *ore .ay and t s al$ays n +rmed condton) Each +%m+ conssts o* the .o$l assem.ly $th m+eller, the col%mn assem.ly, the lne sha*t and the motor s"rt)

<OWL ASSEM<LY

The .o$l assem.ly conssts o* s%cton .ell, m+eller shro%d and .o$l)

The .o$l s a /ane dF%ser that s %sed to con/ert the "netc ener'y o* $ater +%m+ed .y the m+eller nto +ress%re ener'y) It ho%ses the m+eller, the '%de /anes and the .earn')

S%cton .ell s the nlet element o* the +%m+ and t +ro/des +ro+er '%dance to the $ater entern' the m+eller) Im+eller shro%d s 9-ed .et$een s%cton .ell and .o$l) The +ro9le o* the shro%d s closely matched $th the m+eller o%ter +ro9le n order to mnm&e the .ac";o$ and lea"a'e loss)

The m+eller o* the +%m+ s o/erh%n' sem4 o+en and m-ed ;o$ ty+e $th do%.le

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c%r/at%re /anes) The ;o$ +attern s radal as $ell as a-al)

COLUMN 2I2ES

Col%mn ++es $th dschar'e ++e are connected $th the .o$l) The to+ col%mn ++e s 9-ed $th the motor s"rt and the +%m+ s han'n' do$n on the to+ col%mn ++e) The dschar'e ++e s located .eneath the motor ;oor le/el)

S:AT

There are totally 9/e lne sha*ts to transmt the +o$er *rom the motor to the m+eller sha*t) The ty+e o* the ;%d that the +%m+ can handle s clear, cold *resh $ater $th small amo%nt o* s%s+ended solds or a.ras/e +artcles) The $ater handled .y the +%m+ tsel* l%.rcates the lne sha*t .earn's) There are totally  Ntrl r%..er .earn's $th .ron&e slee/e alon' the sha*t) As Ntrl r%..er .earn'

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re8%res +re4l%.rcaton, all se/en .earn's $ere re+laced $th ENOSTOS .earn')

The +%m+ s +ro/ded $th a thr%st .earn' o* tltn' +ad ty+e and t s the com.naton o* thr%st and (o%rnal .earn') It s %sed to ta"e %+ the $ater thr%st de/elo+ed .y the +%m+)

The +%m+ and the motor sha*ts are co%+led .y a ;e-.le co%+ln' n order to allo$ a sl'ht msmatch .et$een the +%m+ and the motor sha*ts)

MOTOR

The +rme mo/er o* the +%m+ s a 54+hase nd%cton motor o* ratn' ) B, 06>> BW and 66 r+m) The motor s"rt s%++orts the dr/n' motor and t also encloses the +%m+ thr%st .earn' assem.ly and +%m+4motor man co%+ln') The motor s +ro/ded $th tltn' +ad thr%st and (o%rnal .earn' at the to+ and tltn' +ad (o%rnal .earn' at the .ottom)

@Re*H IG400, IG403, IG405, IG405A  IG4061 CIRCULATING WATER 2UM2

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+%m+s) >3

No) o* +%m+s

re8%red *or each %nt *or *%ll load)

3 >5 No) o* +%m+s as

stand .y) 3 @*or all the 5 %nts1) >6 Man%*act%re) KYOTI LIMITED, <ARODA) >7 Ty+e o* the +%m+) 05>> M  A 03 /ertcal,

m-ed ;o$) > Total head) 36 MWC)

> Des'n ca+acty) 0,7>> m5_?hr)

> S+eed) 66 r+m) > Sh%t oF head) 67 MWC) 0> N%m.er o* sta'es) One)

00

2ro/son to ta"e %+ the end thr%st o* the +%m+ rotor)

ertcal, tltn' +ad thr%st and '%de .earn' at +%m+ to+ $th ol .ath l%.rcaton)

03

2ro/son *or

cooln' the ol n the ol .ath o* the thr%st and '%de .earn')

<y $ater ;o$n' thro%'h col n the ol .ath)

01 So%rce o* cooln' $ater  A ta+n' *rom the +%m+ dschar'e) 31 Re8%red 8%antty 

36 0+m)

51 Re8%red +ress%re  >) B'?cm3₎

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05

Lne sha*t '%de .earn's)

a1 No o* '%de

.earn's) 

.1 Ty+e) ENOSTOS .earn' $th .ron&e slee/e)

c1 L%.rcaton) Sel* $ater l%.rcaton) 06 Ty+e o* lne sha*t

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MOTOR

>0 Man%*act%rer .y KYOTI LIMITED, <ARODA)

>3 Ty+e)

5 +hase, 7> :& /ertcal sold sha*t s8%rrel ca'e

nd%cton motor CUCACA  003>)

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>6 R2M 66 >7 N%m.er o* +oles) 03

> Blo$att ratn') 06>> BW) > Ins%laton class) 