L/O/G/O www.themegallery.com L TUYNEL CON LN
www.themegallery.com www.themegallery.com L tuynel con ln Tng quan
Cu to Cng thc tnh Mt s kch thc ca l4 1 2 3 Ni dung:
www.themegallery.com I. TNG QUAN L tuynel c xy dng u tin vo nm 1853
ti an Mch. L con ln l l hin i c ci tin t l lin tc tuynel. L tuynel
c ngun gc t c, c du nhp vo Vit Nam t nm 1976. www.themegallery.com
I. TNG QUAN u im: Sn lng ln, Nung lin tc, ch ng sy kh, Tit kim nng
lng Mc c gii ho kh cao, Sn xut theo dy chuyn cng nghip, Nng sut lao
ng cao; gim pht thi kh CO2, Hn ch nhim mi trng www.themegallery.com
I. TNG QUAN Nhc im: L tuynel i hi mc u t kh cao, Quy m sn xut ln. y
l tr ngi ln i vi cc doanh nghip nh www.themegallery.com II. PHN LOI
Theo c cu chuyn ng sn phm nung L con ln L xe gong L bng 1 2 3
www.themegallery.com II. PHN LOI Tuynel vng Tuynel thng 1 tng, 2
tng Thng dng nht l l tuynel thng c c cu chuyn ng con ln, xe gong.
Bung lm vic www.themegallery.com III.CU TO L tunnel l mt hm rt dy
so vi chiu rng ca l.
Lcxydngtccmodun.Cc modunnycthlprpvmbo kn ca l
www.themegallery.com III. CU TO Sy, t nng NungLm ngui Thng thng l
tuynel c chia lm 3 vng Mi vng c c im cu to, ch nhit ring v kch thc
xc nh www.themegallery.com III. CU TO NHIM V TNG VNG Lm ngui Lm
ngui vt liu nung n 60-800Ctrc khi ra khi l. Sy Loi tr ht hi m ca vt
liu khi vo l NungTi y nhin liu v khng kh chy trc tip trong khng
gian l t nng Nng nhit sn phm chun b vo vng nung
www.themegallery.com Cau tao tng lo con lan la lp gach chu la ben
trong cung, Tiep en la lp bong cach nhiet lp bong nay c lam thanh
tng khoi xep chong len nhau. Ben ngoai cung la vo thep bao boc e
vung chac va bao ve . Nhiet o vung lam nguoi, vung say khong cao
nen ta co the xay hai lp : bong cach nhiet va vo thep bao
bocwww.themegallery.com Kt cu ca l V Thng c lm bng kim loi, c bn
cao. Gch xy l V nhit l nung rt cao nn gch xy l gm nhiu lp. Thng
thng l gch chu la, gch cch nhit, bng gm. Chn l L nhng tr kim loi c
kh nng chu c sc nng ca l v vt liu nung. www.themegallery.com III.
CU TO www.themegallery.com III. CU TO Con ln: L mt ng tr c ng knh
ngoi 42 45mm, chiu di ph thuc vo chiu rng l.
Khongcchtmgiahaiconlnkhong 60mm vng nung v 67mm cc vng khc.
Conlncchtobngkimloihocgm bnnhit.Nhchuynngquaytrncacon ln m vt liu c
dch chuyn vo l. www.themegallery.com III. CU TO
+uim:dlmsch;chucsthayit ngt;bntrongmitrngkhngcchtchi; lun lun gi
thng. +Nhcim:githnhcaogp3-4lnconln gm;khngbntrongmitrngchi,nhit
cao(>1160 0C). Con ln KL +uim:githnhr;dngccholnhit cao. + Nhc
im: khi nhit thay i i ngt con ln d b nt v. Con ln gm
www.themegallery.com H thng con ln www.themegallery.com H thng bc t
www.themegallery.com H thng bc t Hthngbctcbtrvngnungcal cung cp
nhit cho qu trnh nung. Cclnungdnglnuchthngtcaotcc khnngtv
thikhnngvolvivntcln t 7080m/s.Dngkhvivntclnnhvytonn s xo trn kh nng
rt mnh trong l. Ccvitthngdnguchthngnhlat ng (dng bin th) v c h thng
iu chnh ngn la t ng. www.themegallery.com III. CU TO H thng phn phi
nhin liu H thng ng cp khng kh cho qu trnh t nhin liu Cc thit b iu
chnh H thng cp v t nhin liu gm www.themegallery.com H thng thng gi
Khng kh cho qu trnh chyc th l khng kh lnh hockh nng t vng lm ngui.
To mng kh bng cch thi kh nng qua khe h vm. Kh thi c ht nn l. Cung
cpkhngkhchoqutrnhchy,tomngkh cho vng t nng v thi kh ra ngoi Thi trc
tip khng kh lnh vo sn phm cn lm ngui. Thi gin tip qua cc knh dn nm
trong tng l vng lm ngui. H thng cung cp kh cho qu trnh ln ngui C tc
dng lm gim nhit . Lm cho du bi trn khng b chy. To p sut gm tng ng p
sut l trnh khng kh lt vo. H thng thng gi nn l www.themegallery.com
IV. CNG THC TNH TON Tnh modul: Sc cha ca l: trong : N s vt liu /
chu k n s chu k lm vic S modul ca l
k : s vin gch trong 1 modul Chiu di ca l: L = k.lm lm: chiu di
tng modul nNG =kG=www.themegallery.com ng cong nung
www.themegallery.com IV. CNG THC TNH TON Tnh chiu di v s modul tng
zone: Da vo ng cong nung thc nghim m ta tnh ton chiu di ca cc Zone
Trong : L : chiu di ca l : h s thc nghim da trn CN tng vng T: chu k
nung S modul tng vng TLlo=mll=www.themegallery.com Vung lm ngui
nhanh (1160-7000C): Vng lm ngui chm(700 5000C): (500- 3000C): Vng
lm ngui cui cung (300 700C): Tt LL66=Tt LL77=Tt LL88=Tt
LL99=www.themegallery.com Tnh phn b nhit Tnh phn b nhit qua l:
Trong l , nhng khu vc c nhit cao ta xy tng v vm bng 3 lp : lp VLCL
samot, lp bng cch nhit v lp thp. Cn nhng khu vc c nhit thp, ta ch
cn xy hai lp: lp gch samot v thp. www.themegallery.com S phn b nhit
qua tng l: t1t2tkt3t4tkkgach samot bong cach nhiet thep bao vekh
nong khong kh www.themegallery.com Cch xc nh nhit phn b qua tng l
Ta xem nhl rt ln khi ta chn nhit nung, v ta coi Ta d on t2, t3,
t4
Tnh ttb1 = (t1 + t2)/ 2 ttb2 = (t2 + t3)/ 2 ttb3 = (t3 + t4)/2
1oC tkk030 =www.themegallery.com Phn b nhit ( )4 01 10.05 1.5 10 /
. .tbt Kcal mhC = + ( )4 02 20.015 1.65 10 / . .tbt Kcal mhC = + (
)0340 / . . Kcal mhC =
3 1 21 1 2 31 1nRo o oo o= + + + + Thay ttb1 ttb2 ttb3vo biu thc
Tnh tng nhit cn : Vi _l chiu dy lp VLCL samt, bng cch nhit, v lp
thp bo v. Do h s cp nhit ca kh l rt ln nn ta c th b qua nhit cn ca
kh l. 3 2 1, , o o owww.themegallery.com Phn b nhit n: H s cp nhit
ngoi c xc nh theo cng thc 4 404273 273100 100n kkn n kkn kkt tCK t
tt tco (+ +| | | | ( ||\ . \ . ( = +www.themegallery.com Phn b nhit
A- h s ph thuc vo v tr tng i ca b mt trao nhit trong khng gian: K =
2.2 ( khi l kcal/m2 0C h) i vi tng cp nhit bnK = 2.8 ( khi l
kcal/m2 0C h) i vi tng cp nhit ln pha trnK = 1.4 ( khi l kcal/m2 0C
h) i vi tng cp nhit xung pha di - en ca vt liu b mt ngoi v l ( khi
l kcal/m2 0Chth ) tn nhit lp v ngoi tn = t4
tkk = 300C _nhit khng kh www.themegallery.com Phn b nht Tnh cng
dng nhit Tnh li cc gi tr : 1 kkt tqR=12 11t t qo= 23 22t t qo= 34
33t t q o= So snh vi ccgi tr ban u ca t2 ;t3; t4vi sai s nh hn
0.01% thta dng vng lp. www.themegallery.com Qut Trong l con ln ta
thng s dng: Qut ht zone sy, t nng v zone lm ngui cui l ht kh thi ra
bn ngoi. Qut y zone lm ngui nhanh cung cp khng kh lm ngui sn phm v
vng nung cung cp khng kh cho vic chy nhin liu. www.themegallery.com
Qut Cng sut ng c c xc nh theo cng thc: Trong :V: lu lng khng kh
theo yu cu (m3/h) : hiu sut qut.t: hiu sut truyn. htp: p sut ton
phn ca qut t qtph VNq q =102 3600www.themegallery.com Qut Khi khng
kh c ln tp cht c hc, tnh N theo cng thc sau: m bo cng sut ca ng c n
nh khi m my cn c h s d tr k N =N k t qtph VNq q =102 36002 .
1www.themegallery.com ng khi ng khi l thit b c xy bng gch, b tng
hoc thp nhm to ra p sut th nng khc phc mt phn hoc ton b tn p ca l.
p sut th nng m ng khi to ra bng: P = H(kk kl)(mmH2O) H: chiu cao ng
khi. kk: khi lng ring khng kh. kl: khi lng ring khi l.
www.themegallery.com ng khi Thc t m bo kh nng lm vic ca ng khi ngi
ta ly: Htt = (1,2 1,4)H. Ngoi nhim v khc phc tn tht, ng khi cn c
nhim v thi khi l m bo v sinh mi trng v an ton phng ha. Theo qui nh
v mi trng th : ng khi khng c php thp hn 16 m v phi cao hn nc nh
(100m) l 5 m. www.themegallery.com ng khi Trong trng hp ng khi lm
vic cho nhiu l th chiu cao ca ng khi phi tnh cho l no c tr lc cao
nht. Cn ng knh trn ca ng khi c tnh theo tng lng kh ca tt c cc l
trong 1s. L/O/G/O www.themegallery.com Thank You!
