a sơn hoàn chỉnh.docx

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<p>Li ni uTrong qu trnh cng nghip ho hin i t nc lnh vc khoa hc k thut ng vai tr ht sc quan trng. Trong lnh vc in -in T gp phn rt ng k t nhng thit b dn dng n cc dy chuyn cng ngh t ng ha nhm nng cao nng sut gim bt lao ng chn tay, vn lc hu khi t nc ta l thnh vin ca t chc thng mi th gii. Lnh vc t ng ha i vo hu ht cc nh my x nghip thay th dn nhng c my mc lc hu, thay th con ngi lm vic trong nhng lnh vc nguy him. c bit hn na vi s pht trin ca cng ngh ngh thng tin mang n nhiu li ch to ln v thit thc hn. Kt hp vi t ng ha gip con ngi iu khin v gim st c cc qu trnh cng ngh tham gia trc tip iu khin i tng. khng nhng trong phm vi thu nh m trn c din rng. Gp phn lm gim chi ph sn sut,qun l sn xut d dng,theo di qu trnh n gin nng cao nng sut lao ng, hiu qu sn xut . Vi nhng ng dng thit thc nh vy nn em chn ti tt nghip NGHIN CU TNG QUAN V CU TRC CHN HM5045-1825.I SU PHN TCH TRANG B IN C CU DI CHUYN V C CU QUAY MM . ti ny l c hi p dng nhng kin thc c s t trong nh trng vo m hnh thc t thu nh. </p> <p>Chng 1 Gii thiu v h thng cung cp in nh my ng tu Nam Triu.1.1. Gii thiu khi qut v cng ty ng tu nam triu1.1.1. Lch s hnh thnh Cng ty CP Cng nghip tu thu v xy dng Nam Triu l mt Cng ty thnh vin thuc Tng Cng ty CNTT Nam Triu. thc hin chin lc pht trin ngnh cng nghip tu thu Vit Nam, cn c vo m hnh pht trin Tng Cng ty CNTT Nam Triu vi mc tiu xy dng Cng ty CP Cng nghip tu thu v xy dng Nam Triu thnh Cng ty vng mnh c trong lnh vc ng mi, sa cha tu bin v xy dng cng trnh vi trnh chuyn mn ho cao, c kh nng tham gia ng mi, sa cha tu bin c trng ti ln v u t xy dng nhng cng trnh p ng c s pht trin ca Tng Cng ty CNTT Nam Triu v th trng trong nc. Cng ty CP Cng nghip tu thu v xy dng Nam Triu chnh thc chuyn i t hnh thc Cng ty Nh nc sang m hnh Cng ty C phn theo quyt nh s 187/Q - TH ngy 10/02/2007 ca Tng Cng ty Cng nghip tu thu Nam Triu. Cng ty CP Cng nghip tu thu v xy dng Nam Triu hot ng theo giy ng k kinh doanh s: 0203002759 do S K hoch v u t thnh ph Hi Phng cp ngy 04/03/2009 c s quan tm gp ca ng u v Lnh o Tng Cng ty CNTT Nam Triu. Trong nhng nm gn y Cng ty CP CNTT &amp; XD Nam Triu c nhng bc pht trin mnh m trong sn xut kinh doanh. Ngoi cng vic sa cha tu bin ln cho cc Cng ty Vn ti bin Vosco, Vinaship, Cng ty vn ti Vin Dng Vinashin; Cng ty CP Cng nghip tu thu v xy dng Nam Triu cn m nhn v hon thnh cng vic san lp, thi cng xy dng cc cng trnh dn dng cng nghip nh: Nh iu hnh Cng ty CP SCTB, Phn xng my in, thi cng ng ni b, San lp v thi cng Nh n ca cng nhn cho cng nhn Tng Cng ty CNTT Nam Triu c din tch 5.000m2 iu kin phc v n cho hng nghn cng nhn, Xy dng Nh iu hnh 05 tng Tng Cng ty CNTT Nam Triu.... Trong nhng nm va qua Cng ty CP Cng nghip tu thu v xy dng Nam Triu lun hon thnh k hoch, thc hin y ngha v vi Nh Nc. B my Cng ty thu gn, linh hot, hiu qu, tnh c ng cao. Nhiu cn b k s c thm lin cng tc v nhiu kinh nghim trong vic thi cng cc cng trnh xy dng, ng tu bin, c i ng cng nhn lao ng vi tay ngh cao, cn c c th m nhim thi cng c cc cng trnh i hi cht lng cao, tnh nng k thut phc tp, quy m ln v tin nhanh. Cc thit b xe, my ca Cng ty c cc chng loi vi tnh nng k thut hin i, m bo thun li cho vic thi cng cc cng trnh ln cn s c gii cao. Trong qu trnh hnh thnh v pht trin, Cng ty lun khng nh uy tn ca mnh bng cc sn phm, cng trnh c cht lng tt, tin thi cng nhanh, v vy c nhiu c quan v cc ch u t nh gi cao1.1.2. Chc nng v nhim v- Tng thu v sa cha, ng mi tu thy, thit b v phng tin ni. Ch to kt cu thp, container, ph d tu c. - Mua bn vt t, my mc, thit b, ph tng ph kin lin quan n ngnh cng nghip tu thy v cc ngnh cng nghip khc. - Xy dng cc cng trnh dn dng cng trnh cng nghip, cng trnh giao thng, cng trnh cp thot nc, cng trnh thy li, cng trnh in. Sn xut kinh doanh cc loi vt liu xy dng, cu kin b tng. - No vt lung, lch sng. San lp mt bng, trc vt cu h tu thuyn.</p> <p>Hnh 1.1: khun vin nh my ng tu nam triu1.1.3. S t chc</p> <p>Hnh 1.2: s t chc ca nh my1.1.4. Mt s hnh nh hot ng ca cng ty ng tu nam triu</p> <p>Hnh 1.3. thi cng lp rp tu ti cng ty ng tu nam triu</p> <p>Hnh 1.4. l h thy tu VINASHIN BAY trng ti 50000 tn</p> <p>Hnh 1.5. cu trc ti nh my ng tu nam triu1.2. H thng cung cp in ca cng tyH thng in ng mt vai tr quyt nh ti sn xut cng nh s tn ti ca c nh my. Hu ht cc thit b my mc trong nh my u trc tip tiu th in nng, in nng cn phc v chiu sng cc phng ban, cc phn xng, cc x nghip ca ton nh my Trc y nh my c cung cp bi li in 6.3 KV, cc trm BA, h thng cp, cc t phn phi ang i hi phi nng cp ci hon h thng bi nhng nm gn y tng cng ty c nhng bc pht trin vt bc, rt nhiu dy truyn, thit b my mc hin i c nhp v sp c nhp Nn i hi vic cung cp in nng ngy cng ln hn, tin cy hn. ng thi l k hoch sp ti ca thnh ph l ng cp li in t 6.3 KV nn 22KV. Chnh v vy hin nay h thng in cao th ca cng ty ng tu nam triu c nng cp t 6,3 KV ln 22 KV, ton b ng dy cp in c thay th mi hon ton v chuyn t s i dy hnh tia thnh s i dy mch vng . n v cung cp cc thit b in cho cng ty ng tu Nam triu l tp on Hanaka T sn Bc Ninh. Cc my BA nhp mi u l cc my c hai cp u vo: cp 6,3 KV v cp 22 KV. Hin nay cng ty vn s dng li 6,3 KV t ngun H L, nhng trong d n nng cp mng li cao p ca thnh ph Hi Phng sp ti c nng cp thnh mng li cao p 22 KV. V vy nn trong d n nng cp h thng ca cng ty phi mua cc my BA c 2 cp tuy gi thnh cao hn nhng khi Thnh ph nng cp li in nn 22KV th cng ty khng phi thay cc my BA na.</p> <p>Hnh 1.6a. S mch in kt ni t li 6,3KV cp in cho cc bin pca nh my</p> <p>Hnh 1.6b. S mng in cao p</p> <p>Hnh 1.6c. S mng in cao p1.3.2. Cc trang thit b ca h htng cung cp in1. L 1: Trm bin p 22(6)/0.4KV-1000KVA( T4-M )My bin p: 01 my Cp in p : 22(6)/0.4KV Cng sut my : 1000KVA2. L 2: Trm bin p kios 22(6)/0.4KV-2x1000KVA ( T2-M )My bin p: 02 my Cp in p : 22(6)/0.4KV Cng sut my : 1000KVA T u dy: : (Y)/Y0-11(12)3. L 3: Trm bin p kios 22(6)/0.4KV-750KVA (Trm T5-M , T8-M , T13-M ) My bin p: 03 my ( Trm T5-M , T8-M , T13-M ) Cp in p : 22(6)/0.4KV Cng sut my : 750KVA T u dy: : (Y)/Y0-11(12)4. L 4: Thit b trm 2 my bin p 22(6)/0.4KV-2x1000KVA (Trm T11-M, T12-M )My bin p: 04 my Cp in p : 22(6)/0.4KV Cng sut my : 1000KVA T u dy: : (Y)/Y0-11(12)5. L 5: Thit b trm 01 my bin p cch li 22(6)/0.4KV-750KVA (M7)My bin p cch li: 01 my Cp in p : 22(6)/0.4KV Cng sut my : 750KVA T u dy: : (Y)/Y0-11(12)6. L 6: Thit b trm ct 22KV 1.T my ct l i cc trm tng 01 t( c lp) T my ct: Loi trong nh, v bc bng tn Thit b ng ct: My ct 24KV/1000A-16KA/1s + Tiu chun my ct: IEC-56 Dng in nh mc thanh ci ng: 1250A Bin dng in: 24KV 200-400/1/1A + Tiu chun : IEC -185 Bin in p: 24KV + Cp chnh xc : 0.5 Dung lng nhit: 250(VA) Thit b o lng: A, WH, Varh( A, W, KVA, KWH, KVA) Cng sut cho u ra cho hai loi hai cun s cp : 30-50(VA)2. H thng t phn phi 24KV( hai phn on)a. Phn on 1 01 t my ct l tng: 24KV/630A-16KA/1s 01 t ni cp: 24KV 02 t my ct l i: 24KV/400A-16KA/1s 01 t ng ct cho h thng t b cos: 24KV/400A-16KA/1s 01 t bin p o lng 24KVb. Phn on 2 01 t my ct l tng: 24KV/630A-16KA/1s 01 t my ct lin lc: 24KV/630A-16KA/1s 02 t my ct l i: 24KV/400A-16KA/1s 01 t bin p o lng 24KVThit b o lng bo v: + S dng r le k thut s + Bo v qu dng 3 pha : F 50-51 + Bo v qu dng th t khng: F50-51N + Bo v qu dng th t khng c hng: F67N + Bo v thp p: F27 + Bo v qu in p F597. L 7: Thit b nng cp trm bin p 6,3/0.4KV thnh trm BA 22(6)/0.4KV-750KVA( Trm T6-C , T9-C , T10-C )My bin p: 03 my (Trm T6-C , T9-C , T10-C ) Cp in p : 22(6)/0.4KV Cng sut my : 750KVA T u dy: : (Y)/Y0-11(12)8. L 8: Thit b nng cp trm xy T3-C : 01 my bin p 6,3/0.4KV-1000KVA thnh trm bin p 22(6)/0.4KV-1000KVA&amp; 750KVAMy bin p: 02 my Cp in p : 22(6)/0.4KV Cng sut my : 1000KVA - 01 my BA Cng sut my : 750KVA - 01 my BA T u dy: : (Y)/Y0-11(12)9. L 9: Thit b nng cp trm bin p T1-C : 6,3/0.4KV thnh trm BA 22(6)/0.4KV-320KVAa. My bin p: 01 my Cp in p : 22(6)/0.4KV Cng sut my : 320KVA T u dy: : (Y)/Y0-11(12b. T in h th : 01 t : T in: V sn tnh in, c ngn chng tn tht : TI m 800/5 cp chnh xc 0,5 My ct h th l tng :500V-600A-65KA/1s S dng cc Aptomat ca t c. ng h o lngV, A, KWH, KVARH ( TI o 800/5 cp chnh xc 1, ng h v cng, hu cng cp chnh xc 1 ) Chng st h th Kho chuyn mch, n tn hiuc. Cp ng h p l tng t my BA n t h th Chiu di dy cp: 20m Cp XPLE 4x240mm2 -600(1000)V Ph kin u ni u cp 4x240mm2d. Dy tip a my 1x120mm2 Chiu di dy : 10m PVC/Cu-1x120-600(1000V) Ph kin u ni dy10. L 10: Thit b ci to trm ct 6,3KV thnh trm ct 22KV 1.T my ct l i cc trm tng 01 t( c lp) T my ct: Loi trong nh, v bc bng tn Thit b ng ct: My ct 24KV/1000A-16KA/1s2. H thng t phn phi 24KV( hai phn on)a. Phn on 1 01 t my ct l tng: 24KV/630A-16KA/1s 01 t ni cp: 24KV 02 t my ct l i: 24KV/400A-16KA/1s 01 t ng ct cho h thng t b cos: 24KV/400A-16KA/1s 01 t bin p o lng b. Phn on 2 01 t my ct l tng: 24KV/630A-16KA/1s 01 t ct lin lc: 24KV/630A-16KA/1s 02 t my ct l i: 24KV/400A-16KA/1s 01 t bin p o lng 24KV11. L 11: Cp ngm trung th 3x185 mm2-24KV di 3426m1. c tnh k thut ca cp trung th:- Cp ngm chng thm dc, in p nh mc: 24KV-XLPE- ng knh ngoi cng ca cp : 85mm2. Quy cch cp- Quy cch cp : PVC/DSTA/PVC/XLPE-24KV-Vt liu dn in : t hp cc si ng- S rut dn: 3 si - Kt cu li bn nn trn- ai thp bo v bng thp m km.- Tit din Fm / 1li : 185mm2- Dng in cho php trong khng kh ( 400 C ) : 450 A - Dng in cho php trong t ( 250 C ) : 410A- Dng in ngn mch IN/1s : 26,4KA/1s- in tr xoay chiu 90 C : 0,128/km - in tr mt chiu 20 C : 0,0991/km - in p chu ng tn s cng nghip 50Hz: 70KV- in p chu ng tn s xung st: 125KV 3. Ph tng km theo: Hp u cp v hp u cp ph hp vi tit din 185mm2, kiu khun p nng v lnh.Hp u cp 3x185mm2: 38 bHp ni cp 3x185mm2: 01 b12. L 12 : Cp ngm trung th 3x240mm2-24KV di 535m1. c tnh k thut ca cp trung th:- Cp ngm chng thm dc, in p nh mc: 24KV-XLPE- ng knh ngoi cng ca cp : 91mm2. Quy cch cp- Quy cch cp : PVC/DSTA/PVC/XLPE-24KV-Vt liu dn in : t hp cc si ng- S rut dn: 3 si - Kt cu li bn nn trn- ai thp bo v bng thp m km.- Tit din Fm / 1li : 240mm2- Dng in cho php trong khng kh ( 400 C ) : 520 A - Dng in cho php trong t ( 250 C ) : 470 A- Dng in ngn mch IN/1s : 34,3KA/1s- in tr xoay chiu 90 C : 0,0981/km - in tr mt chiu 20 C : 0,0754/km - in p chu ng tn s cng nghip 50Hz: 70KV- in p chu ng tn s xung st: 125KV 3. Ph tng km theo: Hp u cp v hp u cp ph hp vi tit din 240mm2, kiu khun p nng v lnh.a. Hp u cp 3x240mm2: 01 bb. Hp ni cp 3x240mm2: 01 b1.3.3. Vn hnh h thng cung cp inVn hnh h thng cung cp in ca nh my Nam Triu i hi mt cch lin tc v an ton cho con ngi v cho thit b. Hin nay h thng cung cp in ang c nng cp v thay mi cc thit b trong thi gian ti li in ca Tng cng ty s ly in t 2 l thay v mt l trc kia.Nh my c rt nhiu cng nhn v rt nhiu thit b t nhng my cm tay cho n cc dy truyn sn xut v vy i hi an ton cho con ngi v cho thit b lun c t nn hng u. mi khu vc c my sn xut u c bng hng dn vn hnh v nhng cnh bo v an ton cho cng nhn. Cc t phn phi in lun c kim tra v theo di bi cc nhn vin t in, cc trm BA, trm phn phi cng thng xuyn kim tra v kp thi khc phc s c xy ra.1.3. khi qut v cn trc chn HM5045-18251.3.1. Cc thng s k thut c bn.Trong nh my ng tu Nam Triu cu trc chn HM5045-1825 ng vai tr rt quan trng, n gip lm tng nng sut lao ng trong nh my v gim vt v cho ngi lao ng. Nhim v chnh ca HM5045-1825 trong nh my l cu cc tm tn v dm thp phc v ng tu. Bng vic li kt hp nhp nhng gia cc c cu v s hot ng ring ca mc chnh v mc ph m ngi ta a c cc tm thp ti v tr mong mun. Mc chnh c nhim v nng tm thp cn mc ph c dng iu chnh tm thp ti v tr mong munMt s thng s c bn ca cc h truyn ng.* Mch cp ngun.Ngun 3 pha 380V c ly trc tip t li in qua cc b bin i khc nhau cung cp cho cc ph ti.Mt s thit b c trong mch cp ngun:+ My bin p 3 pha 380V/220V loi 3KVA v loi 10KVA+ Cng tc t 3 pha ng ct ngun loi 10A, 20A, 40A+ V cc thit b o lng: Vn k, m pe k * Mch mc chnh.Mc chnh c sc nng 50 tn, truyn ng in cho mc chnh l truyn ng in xoay chiu 3 pha s dng 2 ng c c cng sut 90KW c ghp ng trc vi nhau.ng c truyn ng chnh c cp ngun thng qua bin tn loi CIMR G7 4132, ng c nng h c phanh thy lc xoay chiu 3 pha.Nng lng ti sinh trong qu trnh h mc c tiu tn qua in tr c cng sut 12KW* Mc ph.Mc ph dng iu khin a vt vo v tr mong mun, mc ph c sc nn 10 tn.Truyn ng in cho mc ph cng ging nh mc chnh s dng h truyn ng in xoay chiu 3 pha dng 2 ng c c ghp ng trc vi nhau v m bo an ton th c cu nng h cng c phanh thy lc 3 pha.Nng lng ti sinh sinh ra trong qu trnh nng h cng c tiu tn qua hai in tr c cng sut 12kW ng vi hai qu trnh nng v h.* C cu nng cn.Nng h cn l mt c cu lm vic kh nng n trong cn trc. cn trc ny s dng 8 ng c nng h c ghp ng trc vi nhau, mi ng c c cng sut 75kW.Truyn ng in ny cng l truyn ng in 3 pha cp ngun chung cho c 8 ng cC cu nng cn c 8 phanh cho 8 ng c khc nhau. Mi ng c phanh u l ng c xoay chiu 3 pha c cng sut 75kWV ng c nng h phi lm vic c vng tc bng 0 nn cn c h thng lm mt ng c tt. Do vy c cu nng cn c 8 qut qut mt cho cc ng c.* C cu quay mm.C cu quay mm c chia lm 2 l c cu quay tri v quay phiTruyn ng in cho c cu quay mm l truyn ng in xoay chiu bap ha. c cu quay tri cng nh quay phi u s dng hai ng c xoay chiu 3 pha c cng cng sut c ghp ng trc vi nhau, cng sut mi ng c l 22 kW. Cp ngun ho hai ng c chnh qua my bin tn loi CIMR G7 4055 v c cu phanh cho c cu quay cn l 2 phanh thy lc xoay chiu ba pha ng vi 2 chiu quay tri v phi.Nng lng ti sinh trong qu trnh quay cn c tiu tn qua hai in tr nhit c cng sut 6kW1.3.2. Cc h truyn ng in cho cc c cu v thng s k thut.Cc c cu truyn ng ca cu trc c truyn ng bi cc ng c in, cung cp in cho h thng c ba dng:Cung cp in t li qua cc thanh gp in c nh, loi ny thng dng i vi cu trc v cn trc phn xng.Cung cp in t li qua cc cun cp in, loi ny thng dng vi cu trc v cn trc di chuyn ng ray trn mt t.Cung cp in t my pht diezen thng dng cho loi cu trc di ng trn t.Cc yu cu i vi h truyn ng in cho cc c cu ca cu trc:Mi trng lm vicPhn ln mi trng lm vic ca cn trc rt khc nghit. Th d trong cc nh my c kh luyn kim mi trng lm vic vic cu trc nng m nhiu bi. Trn cng bin cu trc phi lm vic ngoi tri. Ch lm vic cu trc l ch ngn hn lp li, khi ng hm thng xuyn.Yu cu v iu khinTt c chuyn ng cho c cu u phi iu chnh tc , lc v gia tc. Hng ha c dch chuyn theo qu o trong khng gian, cho nn thng phi phi hp hai hoc ba truyn ng mt lc.Chuyn dch hng ha khng gy va p v khng dao ng qu mc, ph ti vt s truyn ng, mmen qun tnh thay i do thay i tm vi v gc nng cu. iu ny dn n cn cnh bo khi tm vi xa v gc nng ln. S bin i ph ti gy nn tc ng knh gia cc c cu nh nng h quay cn v thay i tm vi.Yu cu v ph tii vi c cu nng h: Mmen khng ti khi nng mc cu Mco (15-20%) Mm cn khi gu ngom Mco c +50% Mm. Khi h ti do tc ng ca lc ma st nn ph ti s bin i t -(15-20%) n +80% Mm</p> <p>Hnh 2.2. c tnh ph ti c cu nng hi vi c cu dch chuyn , do m men cn tnh v t trng lng gy nn, v vy m men cn khng ti l: Mc0 = (30-50%) Mm i vi xe conMc0 = (50-55%) Mm i vi xe cu </p> <p>Hnh 2.3. c tnh ph ti c cu di chuyni vi truyn ng in cho cc c cu di chuyn ca cu trc, cn trc phi m bo khi ng ng c ch ton ti. c bit ma ng khi mi trng lm tng tnh m men ma st trong cc dn n lm tng ng k m men cn tnh Mc0. Trn hnh, biu din mi quan h ph thuc gia m men cn tnh v tc ng c: Mc = f().</p> <p>Hnh 2.3 quan h Mc = f() khi khi ng ng c cc c cu di chuynTrn th ta thy khi = 0 th M...</p>