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ճ偠tճb\^ӋӰ

ճ偠tճb\^ӋӰ

 

       ճ偠tճb\^ӋӰoˮgͨl(f)ͻȻؓɵij^̣oˮϵy(tng)MгӋǷֹͻȻؓɣǝMؓ˦ȫؓɣij^нoˮgЧ;ijڽ1000MW̞ճˮݷeճ偠tճbcoˮõ˸ˮܹ܏،oˮgӰ푣ɞճØ˸߃(yu)ṩ
       oˮ\ЕrÃ(ni)һc|(zh)ĉСڮ?sh)͉rԓ̎Ľoˮ͕l(f)γСݱõĸ߉^(q)܉͕ʹðl(f)gĶõ•ƉģӰO(sh)估ϵy(tng)İȫ\ijڽ1000MW̞
ճ偠tճbˮݷeճcoˮõ˸ˮܹ܏،oˮgӰ푡
1
ճ偠tճbӋ
1.1oˮòl(f)gėl
       oˮǷl(f)gȡQڱñԺͱϵy(tng)ӳñgԵą(sh)DZ
ıgOh.AhcõĽY(ji)(gu)D(zhun).
P(gun)ӳϵy(tng)Եą(sh)DZõЧg
Sh.Sh.c
ճ偠tճb\Љճoˮco
ˮòõ˸߼ܵP(gun)c
ñoP(gun)Ã(ni)l(f)gėl0h,Ah,
Sh,-sh.0(j)ɵ
Ah-Ah,-Mh,=
(-
4P
-0h,)-(
P.
P)
(1)
pg
pgpug
ʽ:H
ճ偠tճboˮˮλcoˮľ֮g
߶Ȳ,m:OP½ܹܵĉ,Pa:ў
½܃(ni)wܶ.kgm':P.ճˮ
Pa:poճˮܶ,kg/m':P.w
͉Pa:p.wܶkgm':g
ٶ,m/s'

1.2ճӋ

       (j)B(ti)^ճğƽճ(ni)
ğ׃Ҏ(gu)<(yng)͉½Ҏ(gu)),
ȻǑB(ti)^gSrg׃rҳ
ǑB(ti)^gСֵ,M_oˮǑB(ti)
^Ƿl(f)g
ճӋP(gun)Iճˮ
h׃rXM.r
h=h.+(h-h,)e'
(2)
MXMcr
h,=hota(M+M-X>-aMe-(h,-hn)
(3)
XMr
h=h,+[aM(e"-e")+h-n,]e"
(4)
ʽ:X˦ؓɺY(ji)ˮӋ:M.5̖
ճgY(ji)ˮϵĴˮhl0˦ؓ_ʼrճY(ji)ˮʣh0ճ˦ؓǰˮMճ(ni)ˮ|(zh)cճٮ|(zh)֮MCY(ji)ˮϵy(tng)8̖ͼճڹܵӟY(ji)ˮˮcٮ|(zh)֮hcᾮˮʣa5̖ͼӺY(ji)ˮֵ½a=hdɲÌ(yng)͉ˮwePddȻ(j)½ܵĜrgPvvʽ1ó^g
2
ճӰ
       ijڽ1000MW̞ճӋӰM̽ӑճӋݔ?yn)?sh)1ʾ
1ij1000MW̵Ľoˮϵy(tng)(sh)
Tab.1Parametersoffeedwaterdeaeratingsystemofa1000MWpowerproject
Ŀ (sh)
r½oˮ/th-1 3093
oˮÔ(sh) 2
ճˮλcoˮľ˸߲/m 29.31
θ½ܴL/m 43.0
½ܹ܏/mm 630
½ܱں/mm 13
½ܵľֲϵ(sh) 1.75
½ܵĵֲֵڶ/mm 0.2
oˮǰVW(wng)/Pa 8800
˦Mؓɕrճ(ni)ˮض/ 188.7
˦Mؓɕrճ(ni)ˮ/MPa 1.219
oˮñg/m 5.4
ˮˮλݷe/m3 300
2.1
ճoˮݷe
       DL50002000l(f)늏SO(sh)Ӌg(sh)Ҏ(gu)̡ճˮAˮҎ(gu)£200MW™CMճˮAˮС偠tBm(x)l(f)r10minĽoˮ300MWϙCMճˮAˮС偠tBm(x)l(f)r5minĽoˮ
      
ճˮAˮͬ˦ؓɹr½oˮõgӰҲͬ^Сgcճˮݷe׃Č(yng)P(gun)ϵD1ʾDЙM˱ʾճˮݷe偠tBm(x)l(f)rĽoˮ(yng)ķ犔(sh)
       ĈD1ɿճˮݷer^Сgֵ˦ؓɕrԽװl(f)gճˮʼK͠B(ti)(ni)ĉʼKcˮ(yng)ˮݷeˮ½ٶȜpճ(ni)ˮ½ٶȜproˮڵˮcճ(ni)ˮԽСߵ͉ԽС˕r˦ؓɕrg½ֵԽСڳ^̷ֹoˮõg
       ķֹoˮgҪˮݷeԽԽˮݷeڙCMؓɕrӄЧĐ⣬ҲճO(sh)rMõ(yng)
2.2
ճcoˮõ˸
      
ճˮλľcoˮľ߲ṩoǿ˷oˮgԴڷ(wn)B(ti)^Կ˷½ֲܾسpʧʹoˮòl(f)gڳ^߀Ҫ˷ڜÎg½ֵڽoˮðb˸ߴ_ǰ£^СgSճľ˸ߵ׃rD2ʾ
       ĈD2ɿڽoˮðb˸ߴ_ǰ£^СgֵcճØ˸߻ɾP(gun)ϵճØ˸ǷֹoˮgЧ^ճØ˸Mú͹ܵͶYMӡڹO(sh)Ӌ(yng)ڱCoˮòl(f)gǰlY(ji)Swü]P(gun)zҪؽճØ˸
2.3ˮܹ܏
hacˮܹ܃(ni)|(zh)P(gun)ĿǰҪҌˮܵ]ٷҊ2
2ˮ܃(ni)|(zh)ٵ]ֵ
ˮܹ܃(ni)|(zh)ɹ܏?jng)Qxȡ4Nˮܹ܏MӋN܏(yng)Ҋ3
3ˮܹ܏c܃(ni)|(zh)ٵČ(yng)P(gun)ϵ
Tab.3Correspondingrelationbetweensuctionpipediameterandflowrateofmediuminsidethepipe
ܵ(sh) |(zh)/ms-1
܏/mm ں/mm 
630 13 1.70
530 13 2.45
480 14 3.05
426 11 3.80
       ı3ɿҎ(gu)630mm13mmˮ܃(ni)|(zh)ٞ1.7m/s҇Ҏ(gu)](ni)Ҏ(gu)530mm13mmˮ܃(ni)|(zh)ٞ2.45m/s΢҇Ҏ(gu)]ҲӢ]ٷ(ni)Ҏ(gu)480mm14mmͦ426mm11mmˮ܃(ni)|(zh)_3.05m/s3.80m/shˇ(ni)Ҏ(gu)]Ҫ
       (wn)B(ti)rgSˮܹ܏׃rD3ʾڹ܏ĜpС½ܵ(do)·(wn)B(ti)rgpСǷ(wn)B(ti)g׃ֵ^٣ܵҎ(gu)ɦ630mm13mm׃ɦ426mm11mmr䷀(wn)B(ti)g22.63m׃?yu)?0.23m׃ֵH2.4m
       ^СgSˮܹ܏׃rD4ʾS܏Ĝp^Сg@c(wn)B(ti)^̵óĽY(ji)Փǡ෴@ڮ܏pٕr͉oˮwضc
ճضȵĜrgԽСwضȌ(yng)ĉcճ(ni)͉ԽСԳ^Сg½ֵSˮܵĹ܏pС
       Ϸ֪ˮܹ܏^СgӰ^ķֹoˮgĽǶȿˮܹ܏ԽСԽˮܹ܏pСֿɜpСܵ͹ܵO(sh)ĶO(sh)İȫ\Ǯˮܹ܏pٕrܵ(ni)|(zh)ܵ|(zh)ܵO(sh)ӋҎ(gu)н|(zh)ٵļs܏xȡ(yng)CϿ]ˮ܃(ni)|(zh)(wn)B(ti)ggҪ
4.4ˮϵy(tng)
       ˮϵy(tng)س;ֲسȡQڹֲܵڶ܏͹ܵLˮܹܵһؘʵğop䓹ֲܵڶSƫСӋӰ푘OСԺԲӋڴ_ˮܹ܏ǰܵLȵӰMз
       ^СgS½Lȵ׃rD5ʾĈD5ɿS½LȵСgɾԜp½L40mӵ61mrСgpٽ7m@½LȲ˷(wn)B(ti)rܵӳ^̜rgͳ^g½ֵO(sh)Ӌr(yng)Mܜp½ܵLȣճcoˮõ˸ߴ_ǰs½LζܵӲֱԜpСճͽoˮýӿcO(sh)䰲ȫ\С
       ֲܵϸ珝^VW(wng)yTֲܵ^СgӰD6ʾ
       ĈD6ɿСgS½ֲܾpССg׃^СoˮgӰ푺Сֵfǣڵ͉oˮϵy(tng)ڽoˮǰОVW(wng)bVW(wng)һ5~15kPaڳӋg^ԣҪ]oˮÞVW(wng)bðl(f)rӰVW(wng)l(f)50%r30~60kPaɳCS3660MWCMO(sh)ӋǰñMǰ]ÞVW(wng)Чp˹ֲܵ^̷ֹoˮgdz
       1
ճˮݷeԽԽڷֹrroˮgڙCMؓɕrӄЧĐ(ni)F(xin)Aͨ偠tBm(x)l(f)r5minĽoˮ_ճoˮݷe
       2
ճcoˮõ˸ṩoǿ˷oˮgԴڽoˮðb˸ߴ_ǰճØ˸ԽߣԽڷֹrroˮg^ߵճØ˸Mú͹ܵͶYMӡ
       3ˮܵĹ܏xȡճӋӰ푺ܴˮܹ܏ԽСԽڷֹB(ti)rroˮgˮܵĹ܏xO(sh)ӋҎ(gu)н|(zh)ٵļs
       4ˮϵy(tng)
ճӋҲһӰϵy(tng)ԽСԽڷֹrroˮg
       5l(f)늏SO(sh)Ӌͨȴ_ճˮݷeͽoˮõİbλٸ(j)SwrMճijӋ㣬_ϵy(tng)еճ˸܏P(gun)(sh)ڳӋrɽY(ji)ӰصķY(ji)ՓmpСˮܹ܏߹ܵ齵ճØ˸(yu)SÄ(chung)l

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