Bo co thc tp sn xut Nh my nhit in Ung B m rng

Li ni u Sau mt thi gian thc tp ti Tng Cng ty pht in 1, mc d bn thn em rt c gng v cng c s quan tm hng dn, ch bo tn tnh ca thy gio hng dn, lnh o Tng Cng ty v ton th cc cn b cng nhn vin trong phn xng T ng iu khin, nhng do thi gian v trnh bn thn c hn, dy chuyn cng ngh hin i, nn bo co ny ca em khng trnh khi thiu st. Em knh mong c cc thy c v cc bn ng gp kin cho em bn bo co ny ca em c hon thin hn.

Em xin chn thnh cm n!

NI DUNG BO CO THC TPChng 1 TNG QUAN V CNG TY TNHHMTV NHIT IN UNG B

1.1 Lch s hnh thnh & pht trin ca cng ty TNHHMTV Nhit in Ung B1.2 C cu t chc v qun l ca cng ty1.3 iu kin sn xut ca cng tyChng 2 QUY TRNH CNG NGH CA NH MY NHIT IN UBMR 1-300MW 2.1 Gii thiu chung v cng ngh sn xut in nng2.2 Quy trnh cng ngh sn xut in nng ca nh my

2.3 Cc h thng v thit b chnh ca nh my2.4 H thng iu khin v gim st trong nh my

2.5 H thng iu khin Turbine ca nh my 2.5.1 Thnh phn iu khin 2.5.2 H thng trao i tn hiu ca cc chi tit ng 2.5.3 Cc ca s b iu chnh TurbineChng 3 H THNG IU KHIN DCS CA T MYChng 4 L HI V CC B IU CHNH T NG CA T MY4.1 Cu to v c tnh k thut ca l hi4.1.1 Cc thng s k thut ca l hi4.1.2 Cu to v nguyn l lm vic ca l hi4.2 Cc b iu chnh t ng ca nh myChng 1TNG QUAN CNG TY TNHHMTV NHIT IN UNG B1.1 Gii thiu tng quan v cng tyCng ty TNHHMTV Nhit in Ung B cch th H Ni khong 130km v hng ng. T khi khi cng xy dng ngy 19/5/1961 n nay, Cng ty TNHHMTV Nhit in Ung B (tin thn l Nh my in Ung B) tri qua nhiu giai n xy dng v pht trin chnh nh sau:

a.Giai on thnh lp, xy dng, sn xut v chin u t 1961-1975:

Nh my nhit in Ung B c khi cng xy dng ngy 19/5/1961 vo dp k nim sinh nht ln th 71 ca Ch tch H Ch Minh. Cng trnh do ng, Chnh ph v nhn dn Lin X anh em gip xy dng vi ch trng ban u xy dng hai t vi tng cng sut t l 48MW.

b.Giai on m rng sn xut t III & IV v pht huy hiu sut l my, duy tr sn xut n nh 1976-2000:

Nhng nm u thp k 80, Nh my in Ung B l n v pht in ch lc ca ton quc cho n khi Nh my in Ph Li pht in ln li. T n thng 11/2009 Nh my pht n nh vi cng sut 110MW ca 2 t my 5-6. Giai on t 1990-2000, Nh my cn m rng sang cc lnh vc dch v khc nh: sn xut bia, sn xut gch p, lt; sn xut ct in ly tm; thnh lp Trung tm xy lp in v cc i ng dy i xy lp cc cng trnh in ti nhiu a phng trong c ncnhm gii quyt kh khn v vic lm trong giai on lc lng CBCNV ng v thiu vic lm.c.Giai on m rng sn xut t nm 2000 n nay:

T nm 2000 n nay, Nh my in Ung B c nhiu bc pht trin quan trng. Nm 2000, Chnh ph quyt nh u t D n Nh my nhit in Ung B m rng 1 cng sut 300MW, n 26/5/2002 chnh thc khi cng gi thu EPC ca D n do Tng cng ty lp my Vit Nam lm tng thu v n 19/5/2003 hp ng EPC bt u c hiu lc. T ngy 27/11/2009, Cng ty nhit in Ung B tip qun, vn hnh t my m rng 1-300MW. Nm 2006, Tp on in lc Vit Nam quyt nh u t D n Ung B m rng 2-300MW. Ngy 23/5/2008 gi thu EPC D n Ung B m rng 2-330MW do tng thu Chengda Trung Quc c khi cng. Cng ty nhit in Ung B thc hin qun l d n ng thi chun b ngun nhn lc vn hnh t my. Theo d kin, n thng 5/2011, Nh thu Chengda s bn giao thng mi cho Ch u t. Nhit in Ung B s thnh t hp 3 Nh my vi tng cng sut pht in l 740MW.

V t chc qun l, t ban u thnh lp nm 1961, Cng ty mang tn Nh my in Ung B. n nm 2005, Nh my nhit in Ung B i tn thnh Cng ty nhit in Ung B hch ton c lp trc thuc Tp on in lc Vit Nam. Thng 7/2010, Cng ty chuyn i m hnh sn xut v qun l thnh Cng ty TNHH MTV Nhit in Ung B trc thuc Tp on in lc Vit Nam. T ngy 1/1/2013 Nh my Nhit in Ung B c nng cp Thnh Tng Cng ty pht in 1. Tng din tch ca nh my l 320.342m2 trong 111.300m2 l dnh cho nh my nhit in Ung B m rng 1 v cc khu vc thi cng.

Nh my kt ni vi li in ti sn phn phi 220/110KV v u vi trm bin p Bch ng-Trng Bch. Ngun nguyn liu chnh cho nh my l than cm 5, than cm 6 c ly t m Vng Danh, du FO c vn chuyn bng tu i qua sng Ung cp cho nh my ti trm bm du t ti Ung B.1.2 C cu t chc ca cng ty

xng

Hnh 1- 1: C cu t chc v qun l ca cng ty1.2.1 C cu t chc qun l v iu hnh ca Cng ty

a.Ch tch kim Gim c: l ngi i din theo y quyn ca Hi ng thnh vin Tp on in lc Vit Nam (EVN), do Hi ng thnh vin EVN b nhim.

b.Kim sot vin: EVN b nhim 01 Kim sot vin ca Cng ty.

c.Cc Ph Gim c v K ton trng:

+Cc Ph Gim c: Gim c do Ch tch cng ty b nhim trn c s chp thun ca EVN gip Gim c Cng ty thc hin nhim v theo s phn cng v y quyn ca Gim c Cng ty.

+K ton trng: do Ch tch Cng ty b nhim trn c s chp thun ca EVN gip Gim c t chc v thc hin cng tc ti chnh, k ton, thng k ca Cng ty.

d.B my gip vic (Vn phng v cc Phng chc nng, cc Phn xng sn xut): c chc nng tham mu, gip vic cho Ch tch, Gim c Cng ty trong qun l, iu hnh cng vic. B my gip vic ca Cng ty bao gm:Khi vn phng v phng t chc:

1. Vn phng: Cng tc qun l hnh chnh: i ngoi, tng hp, thi ua khen thng, tuyn truyn, qun tr, i sng, y t, mm non.

2. Phng T chc- Lao ng: Cng tc t chc nhn s, cn b, cng tc o to, nh mc v lao ng tin lng, thc hin ch chnh sch i vi ngi lao ng.

3. Phng K hoch: Cng tc k hoch sn xut v kinh doanh.

4. Phng K thut: Qun l k thut, K thut an ton, An ton- Bo h lao ng, Qun l Mi trng v Cng ngh- Thng tin.

5. Phng Ti chnh- K ton: Cng tc Ti chnh- K ton- Thng k.

6. Phng Vt t: Qun l v cung ng vt t, nhin liu.

7. Phng Bo v: Bo v trt t, bo v sn xut trong Cng ty, cng tc phng chng chy n- trc cu ha, cng tc thanh tra, qun s t v.

8. Phng Kinh t- Gim st QLDA UBMR2

9. Phng K thut- Gim st QLDA UBMR2

10. Phng Tng hp CBSX UBMR2

Cc phn xng trc tip sn xut in:

11. Phn xng Nhin liu: T chc tip nhn, qun l v cung cp than.

12. Phn xng Ha: Qun l- x l nc, th nghim nc, than, du.

13. Phn xng L- My 1: Qun l, vn hnh cc l, my 110MW.

14. Phn xng L- My 2: Qun l, vn hnh NM 300MW (UBMR1).

15. Phn xng L- My 3: Qun l, vn hnh NM 330MW (UBMR2).

16. Phn xng in- Kim nhit

17. Phn xng T ng- iu khin: Qun l ton b h thng iu khin t ng ca Nh my.

18. Phn xng sa cha C nhit: Sa cha thit b c nhit

n v sn xut kinh doanh khc (Ngoi sn xut in):

19. Phn xng sn xut Vt liu xy dng v dch vChng 2

QUY TRNH CNG NGH CA NH MY NHIT IN UBMR 1-300MW

2.1 Gii thiu chung v nh my in nc ta th cc nh my in vn cung cp mt lng in khng nh cho mng in quc gia. i vi cc nh my in hin nay th nhin liu chnh c s dng l than v kh thin nhin.

Nguyn l sn sut in ca nh my in l chuyn ha nhit nng t t chy cc loi nhin liu trong l hi thnh c nng quay Turbine, chuyn c nng thnh nng lng in trong my pht in. Nhit nng c dn n Turbine qua mt mi trng dn nhit l hi nc. Hi nc ch l mi trng truyn ti nhit nng i, nhng hi vn phi m bo cht lng ( nh phi p sut) trc khi i vo Turbine sinh cng. Nhit nng cung cp cng nhiu th nng lng in pht ra cng ln v ngc li. in p pht ra t u cc my pht in s c a qua h thng trm bin p nng ln cp in p thch hp trc khi ha vo li in quc gia. Phn loi cc nh my in

Phn loi theo nguyn liu s dng:

Nh my in t nhin liu rn

Nh my in t nhin liu lng

Nh my in t nhin liu kh.

Nh my in t nhin liu hn hp

Phn loi theo Turbine quay my pht: Nh my in Turbine hi

Nh my in Turbine kh

Nh my in Turbine kh- hiQu trnh chuyn ha nng lng ca nh my in:

Hnh 2-1: Qu trnh chuyn ha nng lng

2.2 Quy trnh cng ngh sn xut in nng ca nh my nhit in UBMR1-300MW

(1) Kho nhin liu dng d tr v pha trn than trc khi cp ln l.(2) H thng cung cp nhin liu cho l. Thit k h thng bng ti cung cp cho l, hai h thng ny lm vic c lp k c phn cung cp in m bo lun lun cung cp than cho l trong trng hp s c bng ti hoc s c mt in.(3) H thng nghin than: c thit k kiu l hi t than trc tip ( khng c than bt trung gian). Mi l bao gm 4 my nghin than bng bi, than cp vo my nghin qua my cp than nguyn v n c sp nng bi gi cp 1va sau dc thi thng vo l.

(4) L hi ca dy truyn l l hi kiu tun hon t nhin, c kt cu xung quanh l cc gin ng sinh hi, trong l than c t chy sinh nhit trao i vi nc ngng trong cc gin ng sinh hi to ra hi bo ha tch t trong bao hi, sau hi ny c ua qua cc phn ly dng xyclon v c a qua cc gin qu nhit to ra hi qu nhit kh c nhit v p sut yu cu ca Turbine.(5) Turbine c thit k gm 3 cp p lc. Hi t l c vo Turbine cao p, sau khi gin n sinh cng cao p n li c a qua gin qu nhit trung gian nng nhit ng p, sau c a vo Turbine trung p v sang Turbine h p v bnh ngng. Cng sinh ra trn trc Turbine quay my pht in, my pht in s bin nng lng c thnh nng lng in pht ln li.(6) Bnh ngng : c nhim v ngng hi thot t Turbine h p thnh nc ngng

(7) Bm tun hon: dng cung cp nc lm mt t sng cho bnh ngng, nc lm mt u ra bnh ngng mt phn cung cp cho h thng x l nc, cn li ra knh thi ra sng.

(8) Bm ngng: Bm ngng dng cung cp nc ngng cho kh kh.(9) H thng gia nhit h p: dng nng nhit nc ngng trc khi vo kh kh.

(10) Bnh kh kh: s nhn hi trch t Turbine trung p gia nhit nc ngng ti trng thi gn bo ha tch kh khng ngng.

(11) Bm cp: dng cung cp nc cho bao hi.

(12) H thng gia nhit cao: dng nng nhit nc cp.

(13) B hm: b hm c tc dng nhn nhit trong khi thot sau cc gin qu nhit nng nhit nc cp gn bng nc trong nhit bao hi

(14) B sy khng kh kiu quay: b sy khng kh kiu quay dng sy khng kh t cc qut gi trc khi vo l.(15) Qut gi cp 1: dng cung cp gi i sy than v vn chuyn than vo l.

(16) Qut gi chnh: cung cp gi cho qut gi cp 1 v cung cp oxi cho l.

(17) Qut khi: dng ht khi thot ca l v duy tr chn khng bung la.

Nguyn l hot ng

T kho nhin liu (than, du, vi), qua h thng cung cp nhin liu (2) c a v l (3). Nhin liu than t kho nhin liu (1) qua h thng cung cp nhin liu (2), sau c a vo h thng nghin than (3). Ti y than c sy bi gi nng cp 1 t qut gi cp 1(15), qua b sy khng kh (14) v thi trc tip vo l (4).Nc c x l ha hc, qua b hm (13) a vo bao hi ca l. Trong l xy ra phn ng chy to ra nhit nng. Khi thot ra c nhit cao c qua cc dn qu nhit, qua b hm v b sy khng kh tn dng nhit sau thot ra ngoi ng khi nh qut khi (17).

Nc trong bao hi c cp xung cc gin ng sinh hi xung quanh l, trao i nhn nhit ca l bin thnh hi c thng s cao v c dn n Turbine (5). Ti y hi gin n sinh cng quay Turbine_ my pht. My pht in s bin cng sut c nhn trn trc Turbine thnh cng sut in pht ln li. Hi sau khi sinh cng c thng s thp thot v bnh ngng (6). Trong bnh ngng hi nc ng thnh nc nh h thng nc lm mt tun hon ly t sng.Trong bnh ngng(6), nc ngng c qua cc bnh gia nhit h (9) sau c a n bnh kh kh (!0) nh bm ngng (8). Nc sau khi c kh kh s c bm cp (11) bm qua cc bnh gia nhit cao(12), qua b hm sau a vo bao hi. Ngi ta dng hi trch t Turbine cung cp cho cc bnh gia nhit cao, gia nhit h v bnh kh kh.

2.3 Cc h thng v thit b chnh trong nh my- L hi v cc thit b ph

- H thng in nh my.

- H thng o lng iu khin.

- Turbine my pht v cc thit b ph

- H thng x l v vn chuyn than.

- H thng x l v vn chuyn vi.

- H thng x l v vn chuyn tro x.

- H thng cp nc v x l nc.

- H thng du t.

- H thng nc thi.

2.4 H thng iu khin v gim st t ng chnh ca nh my Nh my c trang b mt h thng iu khin v gim st tch hp (ICMS) thc hin cc chc nng: iu khin v gim st qu trnh vnh hnh ca l hi tua bin v cc thit b ph, iu khin phi hp l hi tua bin, bo v l hi tua bin my phtiu khin v gim st cc h thng ph tr thuc phn cn bng nh my

Cu trc ca h thng iu khin v gim st tch hp bao gm cc trm iu khin c b tr phn tn da trn c s cc b iu khin loi vi x l do hng ABB cp v cc h thng iu khin c lp v s dng b iu khin logic kh trnh

H thng iu khin gim st (ICMS-intergrated control monitoring system) h thng ny bao gm: -H thng iu khin gim st khi t my c gi l (UCMS- unit control monitoring system)

-H thng iu khin gim st phn chung ca nh my c gi l (SCMS-station control monitor system)

Cc h thng hot ng c lp vi khi t my c iu khin v gim st c lp hon ton t cc t iu khin c lp s dng b iu khin logic kh trnh PLC c th nh sau h thng x l nc v kh khong v x l nc thi ,h thng cp than ,h thng x l tro x ,h thng x l hidro trm kh nn, h thng thi bi l.

Ton b vic iu khin v gim st qu trnh vn hnh nh my c thc hin t phng iu khin chnh t ti nh iu khin trung tm .Trong phng iu khin chnh ny c b tr cc thit b chnh sau:

-5 trm lm vic vn hnh vi mn hnh i iu khin v gim st cc h thng thit b thuc khi t my.

-2 trm lm vic vn hnh vi mn hnh i iu khin v gim st qu trnh vn hnh cc h thng thuc phn chung ca nh my dng thit b chnh khi h thng iu khin h thng. -H thng truyn hnh mch kn theo di ngn la bung t v qu trnh vn hnh cc h thng.

Hin nay nh my ang pht cng sut 280MW pht in ln li ca EVN

Hnh 2- 3: Cu trc mng ICMS2.5 Cc h thng iu khin phc tr :

Ngoi h thng iu khi nr DCS ca t my, cc h thng phc tr khc nh h thng cung cp than, h thng x l nc nc thi, h thng sn xut kh Hydro, h thng thi x c iu khin bng h thng iu khin PLC S7400 ca Siemen. Cc h thng iu khin PLC s iu khin qu trnh ca cc h thng, sau h thng iu khin PLC s c kt ni truyn thng ln h thng iu khin DCS thng qua truyn thng Modbus.

V d cu hnh ca h thng iu khin PLC ca h thng cung cp nhin liu ca nh my

Ch tch kim

Gim c

PG

UBMR1

PG

QLDA.UBMR2

PG

K THUT

K TON

TRNG

Vn phng

Trng ca

Phng

Kinh t - k hochQLDA

Phng tng hp

CBSX

Phn xng

Nhin liu

Phng

T chc- L

Phn xng

L - My

Phng

K hoch

Phng

K thut - GS

QLDA

Phn xng

Vn hnh 1

Phn xng

in kim nhit

Phng k thut

Phng ti chnh k ton

Phn xng

Ha

Phng Vt t

Phn xng

C nhit

Phn xng

SX VL- DV

Phn xng

T ng - K

Phn xng

Vn hnh 2

Phng bo v

Nhin liu

L hi

Bao hi

Hi

Turbine

ine

My pht

Tiu th

Nc ngng

5

1

2

3

4

13

10

14

16

Khng kh

Ti ng khi

17

12

11

9

6

7

8

Hnh 2-2 S khi qu trnh sn xut in nng ca nh my

15