sang cua binh ngung;
2. C6 bien phap ngan chan bam ban binh ngung nham duy tri dO chenh nhiet dO tieu chuan
3. Dinh IcY ve sinh blnh ngung khi chan kh6ng xau di 0,5%
trj 56 tuyet d6i so voi d<!e tjnh tieu chuan.
C6ng suat tua bin
MW. 25 50 100 150 200 250 300 500 800 dO IQtkhi kglh, 5 10 IS 18 20 25 30 40 60 11 'l
e. Nhilng hu hOng caa h¢ tMng.di~uchinh va phan pMi hOi co tM gay nenVII"t t6e tua bin do hoi moi, hoi trieh til b<) qua
nhiet trung gian, hOi sau bO gia nhi¢t phan Iyhoi dAn.
d. HII hong mot trong cac bom dau ho~e hu hong thi~t bi lien,dong cua born dau d6.
d. CMt IIIQng dhu khOng'dat tieu ehuAn ella dAu van hllnh nhietdOdau thllp hon gioi han eho phep,
Dieu 369: DO rung euacae 6 g6i da tr\le tua bin, may phat di¢n va may kiehthieh khOng dllQe vIIQt qd cae tIi 56 quydinh sau day:
va cac phuong lien lien lac di~u ha~h. Nhilng hu hOng dllQc phat
hien can khac phuc ngay.
,
Khi khoi dong tua bin til ba:tcit trang thai nhiet nao cling phai kicm Ira s~ lam viec cua cac bO bao v¢ va b(\ lien dOng theo nhu quy dinh trong quy trinh caa nha may•.
flieu 368: Cam khoi d(\ng tua bin khi:
a. Cac thong 56 kicm tra v~ trang tM.i nhiet va trang thai co khi cua tua bin vIIQt gioi han eho phep;
b. Du hu hong mot lrong cac bO bao ve tac d(\ng ngilng tua
bin;
2. Nhiet dO mlOc d!p dinh m ue;
3. Duy tri do) chenh nhi¢t dO dinh muc trong tung thi~t bi trao doi nhiet;
PMi kiem Ira dO chenh nhiet dO trong cac binh trao doi
nhiet cuah¢ th6ng gia nhiet hili nhiet truce va sau khi d~; tu to may, sau khi sua ehila binh gia nhiet va djnh k-y theo lich,
Dreu 365: aim vljn hanh cac binh gia nhiet cao ap (GCA) khi cac thi~t bi bao v¢va di~uehinh rmrc mroc dong trong binh
khong c6 ho~e bjhu hOng.
Neuca cumGCA c6 dllbng di tat s~ e6 chung thi cam v~n
hanh cum GCA do khi thieu hoac Jill hong thiet bi bao ve va dieu ehinh mile nlloe cna mot trong cac GCA, ke cil khi d!t dllbng hoi cua bllt cil mOt GCA nao,
flieu 366: Khi bO quay true tua bin chua lam viec cam dua
hoi VaG cac 1>6 chen, xli hoi hoac mioe nong VaG binh agung, dua hoi vao slly tua bin. D6i voi loai tua bin khong e6 b<) quay true, di~u kien dua hoi VaG tua bin duocquy dinh trong quy trinh cUa nM may.
D6i voi lo~i tu" bin. ngllng hOi chi khi chan khOngd~t toi tri 56 quy dinh trong quy tdnh el\a nha eM t~o, nhllng klt6ng tMp hOn 300mm cOt thuy ngan moi dllQe dlla hOi vao quay rOto tlla bin. Vi¢e xli cae hOi, nlloe nong til10ho~e 6ng d§n hOi vao blnh ngllng' eung chi dllQe pllep khi chan kMngtrong bln.h ngllng khOng tMp hOn 300mm C¢I tMy ngan.
Dieu 367: Tr1loe khi khili<!ong tuabin sau slla ehil~ho~e til tr"ng thai lanh pMi kiem tra dO hoan Mo. va s~ slln sang lam vi¢<: cua thi~t bi ehinh va thi~t bi ph\l cae trang bi hilo v¢ c6ng ngM,iien dOngdi~u khientil xa, cae d\lngc\I kiem trado IlIbng
j
nn 56 quay dinh mue ella rOtovonglph6t
1500 3000
5000
'8000 vII Ion hOn
Bien dO rung kep (mm)
0,050 0,030 0,Ql5 0,010
D6i voi cac tua bin dll<,le trang bj dung cu do t6c dO thi trj
s6hieu dung t6c dO rung g6i do true khOng duoc vuot qua 4,5
mm/s, On do dO rung trong cac tnrong hop sau: - Dua tua bin vao van hanh sau Iilp nip; - Trude va sau khi ti~n hanh sl1a ehila Ion; - Djnh ki' it nMt 3 thang 1 Ian:
- Khi dO' rung 0 cac 6 g6i do tang co rang. I
Ilieo 370: D<! ki<!m tra tinh trang phan truyen hoi cua tua bin va dO bam mu6i cua n6 it nhat mlli thang mot Ian phal ki<!m tra ap suilt hoi tai cac tang ki<!m tra caa tua bin khi luu IIIQng hoi di qua cac ngan ki<!m tra gan voi tri s6 dinhrmrc,
DO tangapsullt hoi il cac tang ki<!m tra so voi dinh rmrc khong vllQt qua lO%voi luu IIIQng hoi cho truoc neu ap sullt hoi trlloc tua bin bang hOae ron hon 35KG/cm2" a 15% , neu ap suilt hoi tnrocfua bin nM hon 35 KG/cm2..
llie0311: Viee thi! nghiem hieu chinh tua bin trong van hanh can phai dllQC ti~n hanh sau khi e6 nhilng thay d6i dang k<! trong phan truyen hoi hoac trong SO dll nhiet cua t6 may, eiing 'nhu khi sullt lieu th\l nhiet co tang qua 1% so vOi dinh mile~
Ilieo 372: Phai tap tile ngilng ~gay tua bin bAng caeh d6ng van stop va cat may phat dien bAng tae dOng eua bao ve hOae clia nhlin vien v*n Mnh trong cae ttl/Clng h<,lp sau:
1. nn s6 quay eua rOto tang vIIQt qua tli s6 dat tae dOng ella bO III dong eMng VtI<,lt t6e;
2.DO di tr~e eUa rOto tua bin IOn qua mile eho phep; 3. Dan no tllong d6i clia cae rOto tua bin.. "IIQt qua trj s6 eho phep;
. 116
4. Ap suilt dau trong he tMng boi troa cua tua bin giam tMp hon mile eho phep;
5. Mile "dhu trong b<! dhu tMp qua mile cho phep;
6. Nhiet dO dhu ra til Mt eil 6 do nao, til Mt eil phia nao caa 0 chan va til Mt eil cutxine chan true nao ·clia may phat tang qua mile eho phep;
7. Dau b6e chay tai t6 may tua bin va khOng co leba nling dap tilt lila nhanh chong bang cac phuong tien hien co;
8. DO chenh ap "db - hydrO" trong he tMng chen true may phat giarn IMp dllOi mile eho phep;
9. Mile dau trong binh giam chan khOng eUa he tMng lam mal may phat bang hydrO giam tMp hon mile eho phep;
10. Ngilng tllt ca cac born dhu tronght<tMng hydrO lam mat
may phat; .
11. Ngilng may phat do hu hong ben trong may phat;
12. DO chan khOng trong binh ngung 1\1 bi giam qua mile cho phep;
13. Qua tlii tang each eu6i cua tua bin d6i ap;
14. Buc mang an loan phan thoat xi lanh M ap caa tua bin;
. 15. DOt ngOt xullt hien rung m~nht6 may tna bin
16. Xuill hien ti~ng va eMm· kim lo~i va ti~ng ken khOng binh thllong ben trong toa bin hay may pMt dien;
17. Xuilt hien tia 1113 hay kh6i til cae g6i tr¥e va caebOchen
tr~e tua bin bOaC may pMt dien;
18. Nhiet dO hoi moi hay hoi qua nhiet trung gian giam IMp qua milc eho phep;
19. Xuat hien thay kich trong duong 6ng hoi moi hoac trong tua bin;
20. PMt hien tMy nut hoac vo 6ng diin dau, 6ng hoi mol, hOi trich, hoi qua nhiet trung gian, 6ng diin mroc ngung ehinh,
nuoc clp, cacong gop, chac ba cac m6i n6i bang han hoac mat bich, cac van va hop phan phoi hoi;
21. Ap suat dau trong he thong dieu chinh giam thap qua milecho phep;
22. Mat mroc lam mat stato may phat dien.
Truong hQP ngung may co pha hoai chan khOng phai quy dinh cu tM trong quy trinh cua nha may phil hop voi chi dan
cua nha may che tao.
Trong quy trinh cua nha may can phai neu nhUng chi diin ro rang khi cac tri s6 kil!m tra vuot qua gioi han cho phep d6i vOi t6 may.
Dieu 373: Trong cac truong hop sau tua bin phai giam bot
tai hoac phai ngilng trong mot thoi han do leysu chinh nha may dien quy6t dinh (sau khi da tMng baa eho dicu dO h¢ tMng nang IUQng).
1. K<;t van stop eua hOi moi hay hoi qua nhiet trung gian; 2. cae van dicu ehinh hOi vao tua bin, bi k<;t ho~c gay ty van, k<;t eac la cMn ho~c cae van mot ehicu eua cae eila trieh
hdi;
3. Htl hOng trong h¢ tMng dicu ehinh;
4. cae hu hOng lam dilO IOn eM do v~n h,mh blnh thuilng eua h¢ th6ng thi€t bj phu, sO db va duilng 6ng eua t6 may, neu nhilng htl hOng nay kh<'lng thl! kMeph\le <ltlgc khi kMng ngilng
tua bin;
•
5. PMt hien tMy hu hong trong cac bc) baa v¢ COng iigh~
raedong ngungIhi€t bi;
6. PMt hien tMy xi tren cac dtlilng 6ng dllu, Mi moi, hoi trich, diin nuoc ngung chinh va nude dip tren cac 6ng gop, ehac ba, cac m6i n6i han vii m~t bich eiing nhu tai cac van va Mp
phan pMi hoi,
Dieu 374: D6i voi meSi tua bin can xac dinh thili gian quay quan tinh cua roto khi ngirng 0 chan khOng binh thuong vii khi ngung CO pha hoai chan kMng. Neu tMy thili gian do bi giam
thi phai xac dinh nguyen nhan va each kMe phuc. Thilj gian quay quan tinh phai duoc kil!m tra trong tat elicac Ian ngung t6 may tua bin.
Dieu 375: Viec van hanh tua bin CO cong suat theo cac so db va il nhnng eM dO chua duoc tinh d€n trong cacyeu cau ky
thuat khi eung cap thi€t bi (nhu eM do may bu dOng bo, ham nude nong troug binh ngung...) chi duQc thuc hien khi nM may eM tao va Vu khoa hoc ky thuat Bo Nang luong cho phep.
Dieu 376: Cac t6 may tua bin til 1l0MW trO xu6ng pMi du\lc dai tu 4 - 5 nam mOtllln.
cae t6 may co ding suat Ion hon lOOMW - 3-4 nam mOt Illn, thOi han dl)i tu cae t6 may tua bin di dong eua nhil may diesel 1,2 nam mOt Illn.
Viee dai lu truoe thili han ho~e keo dai ehu kY lI~n hanh
thiet bi so voi quy dinh trtn pMi can cil vilo tlnh trang !dnh te
ky thu~t cua thiet bi lIa pMi du\lc giam d6c COng ty dien I\lc eho phep.
Die" 377: cac eOng vi¢<: sila ehila sau day pMi do th\l sila ehila lua bin th'!c hi¢n.
Cac g6i do va M th6ng dau ciia toan t6 may ke'! ca cac bo chen true may phat dien, b¢ dieu chinh ap luc dau chen;
- Cac nila n6i true cua roto tua bin va may phat dien;
- Cac duong 6ng va phu tung:
- Vice can tam va can bang t6 may tua bin.
Dieu378:Khi dua tua bin ra dl! phong lau dai (tren 10 ngay) can ap dung bien phap bao quan ch6ng ri ben trong tua bin phu hop voi cac chi dan hien hanh ve bao quan thict bi nhiet nang.
Dieu 379: Nguon nuoc lam mat cho nha may nhiet dien phai dam bao m¢t each lien tuc, dam bao viec dieu chinh cM d¢ nhiet nham muc dich duy tri do chan khong kinh t6 ngan ngua d¢ Mn cua binh ngung va 6ng tuan hoan,
Dieu 380: Khi Van hanh thap lam mat va be'! phun can phai dam bao:
1. Chc d¢ lam viec t6i uu M tao dieu kien d\lt duoc chan khong ,kinh te'! nhat,
2. Hieu qua lam mat phai thoa man cac dac tinh lieu chuan. 3. Kiem tra tinh trang cua he thong phan phdi mroc theo lich duoc duyet va thau rua chung (it nMt la 2 Ian m(it nam: mua kho va mila mlla).
4. Kie'!m tra cac 11l0i cua tMp dieu ap dllng thOi lam s\lch chung theo mite d¢ can thie'!t.
Dieu381:Trong trllong hc,lp tam thili khOng daa vao van himh thap lam mat cilng cac chi tie'!t k6t cau g6 thi cac cita thOng khi cua chung pMi dong chilt, con phia sau tMp lam mat pMi tang cllilng de'! phOng hoa hoan.
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Dieu 382: Cac M thu mlOcrna mat trong thap bang be lOng c6t thep ciing nhu cac tam xi mang, amiang dilng lam ldp lot, cac C¢t thep cua thap lam mat can phai co cMng tMmtin cay.
Dleu 383: Tat ca cacbO PMri bAng g6 cua thap lam mat can duoc khil trung, lop lot cot thep cau thang pMi bao v¢bang dau khil trung.
Dieu 384: Vi¢C xem xet cac ke'!t cau chinh cua thap lam mat (COt thep, thie'!t bi uroi va khuug caa chang, M th6ng phan pMi nuoc va thie'!t bi thong gio) can tie'!n hanh hang nam khi nhiet dO khong khi 6n dinh, Neu thap lam milt dat il dO cao tren 100 m thi can phai dung may moe trac, dia kie'!m tra dO tMng ditng
it nhat 5 narn mot Ian.
Chuong 19