w Thdng tin khoa hye edng nghd md NGHIEN tSXOi IHIET KE, CHE TAO NldT SO T H I ^ Bl TUDONG DO L U O N G DIEU KHIEN DAY CHUYEN CONG NGHE TUYEN THAN VA KHOANG SAN In the coal and mineral separation plants, for KS Lt VAN HAI having the output products witii the stable quality, KS PHAM VAN HI^U the role of the automatic monitoring, measuring KS L^ VAN PHUC and controlling systems have been always paid Vl^n Khoa hge Cdng ngh^ Md - Vinacomin much attention to In the paper, the authors refer to the research results on the design and manufacture of some automatic measurement and control equipment in the coal and mineral separation line Day chuyen cdng nghd tuyen bao gom cde cum may cdng nghidp ed yeu cau dieu khien ty ddng d mCre cao, vdi nhilu ehung loai thid't bj CO didn khde lam vide lien tue tuan hoan Cdc nguon nguydn lieu dau vdo eua cac Nha may tuyen (NMT) nhu than nguyen khai qudng khodng san thudng cd sy bid'n ddng Idn ve tro am, ca'p hat hdm lUdng tap chd't Do dd de ed duoc cac san pham dau sau tuyen dat chd't luong on djnh thi vai trd eiia he thd'ng gidm sdt, lifdng - dieu khien tu ddng (DKTO) NMT duoc ddt len hang dau Nd'u thie'u he thong DKTO se khdng the khai thde het kha ndng eCia thiet bj cdng nghd cQng nhy lam giam hidu qua san xuat vd tha't thodt tdi nguyen O'Vidt Nam hidn cd hai nha mdy tuyen than cd quy md tmng binh la Cdng ty Tuyen than CCfa Ong, Cdng ty Tuyen than Hdn Gai va mot so' day chuyen sang tuyen cdng suat nhd thudc cac ddn vj khai thae than ham Id vd Id thien Trong dd, chi cd NMT Hdn Gai va CCfa 6ng la cd he thdng dieu khien tap trung kd't hyp vdi cde thid't bj ludng tif xa Mot so ddy chuyen tuyen mini cQng da ed he thd'ng dieu khien tap trung, dieu khien lien ddng nhung khdng cd thid't bj ludng Vdi mot nhd mdy tuyen thi cdng doan tuyen dUde vi nhu trdi tim cCia todn nhd may Cd nhieu hinh thifc tuyen khde nhu tuyen nude (huyen phu), tuyen bang xody ldc cyclone vd tuyen khf Trong dd, d Viet Nam, ehCi yd'u thyc hidn bang phUdng phdp tuyen huyen phu Sy dn djnh ve ti cua huyen phu mdy tuyen quyd't dinh quan dd'n chd't lUdng san pham dau sau tuyen Gia trj tl ndy thudng xuyen bj thay doi qua trinh tuyen, song vide dieu ehinh gid trj ti theo ydu cau phan Idn lai dUde thye hidn thCi edng NghTa la ngUdi van hdnh thudng xuydn phai la'y mot luyng the tfch huyen phu ed djnh be chifa huyen phu roi ddt len ban can, nd'u tha'y ndng hdn gid trj ddt thi l)o sung them nude vao be huyen phu, ngUdc lai nd'u nhe hdn thi phai hda them manhetit vdo be Vide lam thQ edng Id khdng lien tue ndn khdng gidm KHCNM SO 1/2012* CO DifeN - TITDONG HOA sat dUde thUdng xuydn gia trj ti huyen phii din dd'n sai Idch tl trong, thay doi pham vi rdng, lam eho san pham dau sau tuyen ed chat lUdng chua eao Mot he thd'ng ludng, dieu khien ty ddng gid trj huyen phu eCia nha mdy tuyen se giai quyd't dUde bdi todn ndu trdn Xua't phdt tif tinh hinh thUe te ITnh vyc tuyen than vd khodng san nhu da ndu d trdn, Phdng Nghidn cifu Didn Ty ddng hda - Vidn Khoa hoe Cdng nghd Md - Vinacomin (Vidn KHCN Mo) da tim hieu nghien eCfu thid't ke va che tao thdnh edng mot sd' thid't bj ty ddng ludng dieu khien day chuyen edng nghd tuyen than vd khodng san Cde thid't bj ndy da dUde dp dung vdo ede ddy chuyen tuyen chfnh Vidn KHCN Mo thi edng xdy dyng vd bude dau da mang lai nhufng hidu qua rd't tfch eye Cd set lya chon giai phdp thie't ke Trdn ed sd nghidn cifu nhumg tie'n bo kT thuat dieu khien edng nghd nhd may tuyen eCia ede nude trdn the gidi phdn tfch kha ndng ifng dung dieu kidn thye w Thdng tin khoa hoc cdng nghd m d te d eae nha may tuyen tai Viet Nam, vide lya chon phUdng an thid't kd he thd'ng dieu khien cho cae nha may tuyen than dUdc thye hidn theo ede tidu ehi: Xdy dyng hd thd'ng dieu khien theo hudng tid'p can giai phdp kT thuat tidn tiln cCia thd gidi, eu the la hd thd'ng SCADA nhieu cd'p, vdi cae bo dieu khien logic kha trinh PLC de dieu khien, ludng cue bo vdi ed'u true phdn tdn cd tinh md-dun eao de ddng dau tu img dung hodc md rdng thdm theo tifng giai doan Moi hoat dong cua nha mdy deu dUde kiem soat ti/ phdng dieu san xuat qua he thd'ng mdy tfnh vd mang truyin thdng edng nghidp He thd'ng phai ed kha ndng ty ddng hodn todn vdi cde thdng sd' ddt ti/ trung tdm dieu khien cQng nhu kha ndng chay cue by tOng day chuyen cdng nghd theo ydu cau thye te vd kha ndng chay doe lap ti/ng thie't bi tai hidn trudng, Trong qud trinh khdi ddng, di/ng va dang hoat ddng moi thid't bj deu phai lien ddng vdi vdi cde thid't bi tai de'n nd Khi xay sy eo, cdc thie't bj se di/ng theo trinh ty edng nghd da djnh de dam bao vide un tac Id tdi thieu Cdc trang thdi hoat ddng, sy ed eua thid't bj deu dUde luu trii vdo ed sd diJr lieu theo thdi gian thye - Cae thdng sd Itfdng deu dUdc gidm sdt ti/ xa lien ddng vdi thie't bi dieu khien - Moi thie't bj dien tCf phai thfch nghi de dang vdi dieu kien cQa mdi trudng vd ngudi van hanh sCf dung Nguon vdt tu linh kidn phai dUdc dam bdo cho hoat dong bdo tri, blo dudng cdc thilt bi sau ndy Gidl phdp thiet ke' che' tao he thong t? tryng huyen phu Hidn nay, tren t h i gidi da dp dung nhieu loai t^ huyen phu nhu d'ng thCiy tTnh, bdng can treo, bang d'ng nhung dp sud't vi sai, theo nguyen ly cam img, blng nguydn ly phdng xa va blng cam biln dang rung Trong dd, nguyen ly phdng xa eho kit qua chfnh xdc nhd't vd dUde dp dung bie'n, nhidn, chi phf dau tu vd tri rit d i t va khdng phu hdp vdi trinh dd sCf dung d Viet Nam Nhdm de tai da xem xet lya chon phUdng dn thie't ke he thd'ng ti dya tren tieu chf: Phil hop vdi trinh khoa hoc ky thudt nude ChCi ddng dUde nguon vdt tu, linh kidn thay thd Phu hdp vdi dieu kien mdi tri/dng vd eon ngydi van hanh SLf dung Vdi tieu ehf ndy phUdng dn thie't ke he thd'ng ti dya tren nguydn ly bang phUdng phdp cam Cfng Id phu hdp hdn ea Ddy Id phUOng phdp tl mdi dyyc phdt then nhCfng ndm gan ddy Cdc nguon linh kien cd the mua dUde tren thi trydng Viet Nam vd lap ddt, hieu ehinh ddn gian Phydng phap ty dUde sijf dung cac dydng d'ng va thung chCfa chd't long huyen phu Hi thong tl huyin phu gdm: KHCNM SO 1/2012* CO D I £ N - T I / D O N G HOA Cam bie'n ti trong, Bo chl thj vd ke't ndi truyen thdng ti Cdm bien ti cd ket ed'u la mot khung day cam Cfhg ti/ gom nhilu vdng day quan lai vdi Khung day dUde cdp vao mpt nguon dien xoay chieu hinh sin chuan cd tan so dUdc tinh toan phu hdp vdi ti/cam cQa nd Toan bd khung ddy dUdc bao boc bdi Idp nhya eCmg va g i n kfn bang keo epoxy va gdn cd djnh be chifa huyen phu cQa nhd may tuyen Khi ti huyen phii thay ddi lam gid tri ti/ tfnh eCia nd thay ddi, d i n den ti/ cdm cCia khung ddy thay ddi Sy thay ddi ndy dUde dUa tdi by xCl ly tin hieu Bd chl thj va kdt ndi tmyen thdng ti cd nhiem vu cap nhdt lien tuc sy thay ddi gia tn ti/ cam cudn day xCf ly va hien thi tai ehd gid tri eCia tl huyen phu be ehCfa dong thdi ke't nd'i tmyen thdng vdi thie't bj dieu khien Bdng nhung tfnh todn thuc nghiem, nhdm thilt k l da xay dyng cdng thuat todn tl huyen phu Kd't qua kiem tra cho tha'y, gid tri sCf dung can chuyen dung va bang he thd'ng ti la tyong dydng Bang the hien kdt qua so sanh phep thQ cdng vd bang may He thd'ng ti huyen phu da duOc dp dung thi3f nghiem tai day chuyen tuyln than cue than don xd bai che bie'n than Udng Thuong, budc dau da cho ket qua kha dn djnh, ft bj anh hudng bii cac thdng sd mdi tmdng khde w T h d n g tin khoa hye edng nghd md Bang So sinh phip thu edng vi bang miy Lin Cin thyc ti' (kg/lit) 1.8 178 1,92 1,95 2,05 Gii trj bing miy (kg/lit) Sais6(%, 1,85 2,78 1.12 1,04 0,51 2,44 1.8 1,94 1,96 2,1 Dong 86 chl thi vd dieu chinh rriLfc CCJ bang C) Bang tai Cam bien mCrc ^ ^ ^ ^ ^ B uBunke, nk ^ ^ ^ ^ mang r6t Hinh Nguyin ly hi thing diiu ehinh mdc Hien thi Radar sensor Bd KD ZT: Truyen thong VI XLf ly Cac rcJie dieu khiin phim 86 chi thi va dieu chinh mijit B y eam bid'n (sensor) mifc da: ti'eh hdp dng-ten thu phdt sdng va bo ti'nh toan khoang each chuyen sang tfn hieu chuan 4-20mA Giai cua sensor khoang 20m Bo chi thi va dieu khien mCfe (hinh 2): Trung tam cCia bo ehi thj la mot vi xCr ly A R M , lay mau ti'n hieu tif sensor mCfc, xCf ly va cdn chinh tfn hidu hien thi tren m a n hinh Bp chi thi bao gom ea tinh ndng dieu khien thie't bj rdt lieu vao bunke, ed n g u d n g dieu khien la ngUdng tren vd ngudng dudi Ngudng trdn dieu khien dQng thid't bj 66 lieu vd ngudng dudi eho phep thid't bj cap lieu 66 lieu vao bunke Bo chl thj eho phep ngudi SLf d u n g ddt ngudng dieu khien va eung cap so lieu ludng - dieu khien ve trung t d m dieu thdng qua Un hidu truyen t h d n g RS485 Giai p h a p thie't ke' che' Hinh So khdi bd dieu ehinh mUc Giai phap thie't ke' che' tao he t h o n g va d i e u chinh mure vat l i e u , mure nudc tir d o n g Mot thdnh phan q u a n khac can gidm sdt nhd may tuyen Id mifc nude, mCfe vat lieu ede be chCfa cdc bunke de xdc lap che d o dieu khien cho cdc doi tUdng lien quan khac Do vay, n h d m de tai da tim hieu, nghien cCfu giai phdp v d Cfng d u n g thie't bj lidn tuc mCfc t h a n t r o n g bunke ca'p lieu c h o nha m a y tuyen, mCfc nude cac ho bam Nguyen ly mCfe ra't da dang n h y n g u y e n ly dien d u n g , didn trd phao, dp sua't, sieu a m da vd mot so nguydn ly khde Hai nguydn ly t h d n g dung nhd't hidn Id sieu d m vd da - N h d m nghidn eCfu xem xet dieu kidn thye te eCia Viet N a m vd tha'y nguydn ly bdo mCfc than h d hdp If nha't la dung nguyen ly d a , thye te h d ehCfa ede san p h a m than c d bui eao san p h a m khd va 6\jae66 lidn tue v d o h d , dieu kidn n h u vdy sCf dung nguyen ly da se d a m bao chfnh xac, ke ca ed ndng bui cao ma nguyen ly sieu a m k h d n g the dUdc Thanh phan he thd'ng (hinh 1) KHCNM SO 1/2012* CO DifiN - TV DONG HOA t a o he thd'ng d i e u k h i e n l i e n dong t y dong Cau true he thong Vdi ede djnh hudng ehung ndu trdn xdy d y n g m d hinh he thd'ng d i l u khien edng nghd dp dung eho N M T tai Viet N a m ed ca'u true phdn tan dya trdn ede bo dieu khien kha trinh PLC the he mdi sdn ed trdn thj trudng Viet Nam cQa cde hang n h u Siemens hodc Omron va ede tram van hdnh tram quan ly n h u trinh bay trdn hinh 2, ca'u true he thdng dieu khien NMT (hinh 3) Ca'u true he thdng nhU trdn dUde xdy dyng trdn ed sd tham khao m d hinh he thdng dieu khien tien tie'n cQa cae nude ^Thdng tin khoa hye cdng nghd m d m\ •SZ ^t_ tttf)' PB CPU Ihl I DO Ot modul*! I modulsi 1m J_mo,;ul J modul*' HM I °° T "' T *' T ^" I I modul*! C ,i„ hAng l)Mly H'.riM l) tO Ito inodntoB I mnrfiil** J riniiliit«n Hinh Ciu true hi thing diiu khiin NMT { start ] DCmg tu^n tu xudi dbng than Khdi dftng tu^n tu ngUdc dbng than Cac thiet bj phia trudc su c6 theo thCf tu dong than difrig l^p tCte, Cic thi^t bj phfa sau tiS'p tuc difng tu Jn tU Hinh 4.Luud6 thuit toin diiu khiin liin ding phdt trien trdn thd gidi nhi/ My va Australia Ddy Id loai he thdng img dtjng rd't hieu qua k i ca cho nhiing nhd mdy qui md vi/a vd nhd, song lai de md rdng eho quy md ldn hdn Vdi «A«.,u'* X ^a' eae chuc ndng giao tidp eong nghiep dya tren cdc bd PLC eae phan mem giao dien SCADA cdng nghiep va cdc phan mem quan ly tiidng tin Cdc thdnh phan he thd'ng: l:am dieu khien tap tmng + Bdn dieu khien va may tfnh edi ddt giao dien dieu khien vd giam sat; ^Pi + Bd dieu khien kha trinh PLC; + He thd'ng cdp ngudn dilu khien Cdc hop dilu khiin hidn tnrrinn vi S ^ r J l •• trydng Vd kdt nd ve trunq tam ^jj^^j ^^^^ ^ """ - Cdc tfn hieu phan hdi vdn hdnh vd sy cd cQa cdc ddng CO ti/ to cung cd'p dien ve tram dieu khien Mang truyen thdng cdng nghiep giOia cac tram cue bo va cac thid't bj lydng Mang thdng tin xf nghiep dya tren mang LAN KHCNM SO 1/2012* CO DifiN - T U D O N G HOA Oe d i m bao lam vide dn djnh vd an toan cho nhd mdy tuyen he thd'ng dieu khiin phai thda man yeu cau sau: (1) Hd thd'ng phai cd ehe dieu khien: dieu khien tdp trung ty ddng vd dieu khien bang tay tai hidn trudng (2) Trong chd ddng dieu khien tap trung ty ddng phai tuan theo trinh ty khdi ddng ngyyc ddng than vd di/ng theo thCf ty ngyyc ddng than Khoang cdch thdi gian khdi ddng va di/ng giOra eac thidt bj' phai 6Ci Idn de dam bao thiet bj di/ng hoat ddng khdng cdn qua nhieu tai tren thidt bi (3) Khi' mdt thidt bj ed stf cd phai di/ng may thi thilt bj dd tai vdo nd phai di/ng lap tCfe cde thiet bi sau nd vln di/ng tuan ty vdi khoang thdi gian da ddt Sd 66 thudt todn edi ddt cho PLC dieu khien lien ddng dyyc md ta tren hinh ChJOng trinh cda PLC dyyc viet tren phan mem hang cung cap PLC cung cap Ddu tien ChUdng trinh kiem tra tfnh s i n sang va c h l dieu khien cCia he thdng Bdi vi he thd'ng thudng ed nhieu chd' dieu khien khac nhy dieu khien lien ddng, dieu khien tai doe lap N^u ehe lien ddng ttii chuong trinh se bat dau qua trinh khdi ddng tuan ty day chuyen theo chieu ngyyc ddng than nhan lenh khdi ddng Kh1 nhan duoc lenh dC/ng tuan ty, chUdng trinh se dCmg tuan ty cac thid't bj theo chieu thuan ddng than Khoang thdi gian khdi ddng va dCmg giOra hai thid't bi lidn tiep dyyc tfnh toan hyp ly de dam bao san pham khdng bi tran ngoai khdi dong vd khdng w Thdng tin khoa hoe cdng nghd md edn san pham tren thie't bj difng Trong qua trinh hoat ddng eCia day chuyen, ne'u mot thie't bj nao dd cd sy ed thi ede thie't bj 66 san pham vdo nd se difng lap tCfe cdn ede thid't bj phfa sau tie'p tue difng tuan ty Tich hyp dong bo hda he thd'ng lirdng dieu khien ty dong Thie't bj ludng la phan rd't quan trong cde he thd'ng dieu khien ty ddng nhd mdy tuyen, nd quye't djnh cap cung nhU chat lUdng ty ddng hda cCia he thdng Mot he thdng ty dong hda nhd mdy tuyen ngodi ede tfnh ndng dieu khien ty ddng cdc qud trinh khdi dong/di/ng ty ddng lidn ddng, thi mot sd khdu edng nghd chfnh rat can thid't tfch hop cdc thie't bj ludng vd dieu khien ty ddng - Dieu chinh huyen phu Hau het ede ddy truyen tuyen deu sCf dung phi/dng phap tuyen bang huyen phu, nguydn tac tuyen dya trdn sy khde giura lyyng rieng eCia vat lieu tuyen va dung djch huyen phu dam ddc De edng tac tuyen dUde hidu qua thi ty huyen phu phai di/de kiem sodt phuong phdp truyen thdng la lay mau de can theo me hodc bang dng thCiy tTnh vd dieu ehinh bang each cap nude pha loang hodc cap huyen phu bd sung Chat dung tao dung djch huyen phii chil yd'u Id man-iie-tft Tif nhung ndm 70, cac nifde nhu My, Anh Nga da nghidn ciiru va phat trien cae dong may ty de dp dung ty ddng hda cho khau nham nang cao hidu sua't tuyen va han che tdi thieu 091 diu vio that thoat than 1SSpG chat thai PhUdng phdp dL/dc SLf dung tuyin nhieu nhCfng ndm 70, 80 la ty trpng dya trdn nguyen ly dp Hinh Hi thing diiu ehinh ty trgng huyin phu sua't vi sai PhUdng phdp eho dp diing than thidn vd hidn dai chfnh xae khdng eao nhung ed Giao dien phan mem dUde the ehd'p nhdn dUde, vd ed chia lam khoang chfnh, han che Id ed tid'p xiie ed khoang trdn eiing la phan tieu hoc, ndn ed the gay mat chfnh de, menu lya ehon vd danh xdc theo thdi gian PhUdng sdch canh bdo, khqang dudi la phdp dUde Cfng dung nhieu phan 66 hoa dieu khien - gidm nhd't hidn ndy la theo sdt Khoang trdn ludn khdng nguydn ly phdng xa PhUdng thay ddi, eung cap ede menu phdp ndy eho chfnh xac lUa ehon chfnh nhU "Trang eao vd khdng can tid'p xiie ed chfnh", '"Cdi ddt he thdng", "Canh bao" "Bao cao"- "Ddng hoe vdi dung djeh huyen phu Sd 66 he thd'ng dieu ehinh nhap", "Trd giup", "Thodt", huyen phii dUde md ta trdn Giao didn phan mem bap hinh gdm ede phan chfnh sau: Xay dyng phan mem - Giao didn chfnh; dieu khien va giam sat - Giao didn dang sd 66 lirdng tCr xa cac thdng so' cdng nghd nha may; cong nghe Giao dien bang trang thai; Phan mem giao dien la - Giao didn panel dieu khien; phan khdng the thieu Giao didn cde thdng sd cde he thdng dieu khien hidn iL/dng; dai ChCfc ndng eCia giao dien Giao didn tifng thid't bj; phan mem nhusau: In xua't bdo edo - Cdi ddt thdng sd van hdnh Trdn ed sd nhung hidu qua vd che dieu khien he thdng; mang lai tif vide dp dung ede - Giam sat cde trang thdi thid't bj ludng dieu khien tai hoat ddng vd trang thdi sy cd ddy chuyen tudyen than cue cde thie't bj; than don xd, bai ehe bid'n Dieu khien he thd'ng; than Udng Thyong, eac can bd - Gidm sat ede thdng sd nghien eiiu Vidn KHCN Md da iLfdng; hodn thdnh de tdi nghien curu - Luu trCr dur lieu va xuat cCia minh De tai cd tfnh thye bao cdo tidn cao mang lai hidu qua tich Giao dien phan mem dyyc eye ddng gdp vi muc tidu thiet ke di/a tren phan mem cdng nghiep hda - hidn dai cdng nghiep ed ehCfc ndng 66 hda khai thde ehe bie'n than hoa manh, giao dien ngudi va khoang san./ KHCNM sO 1/2012* CO DifeN - TV DONG HOA Van phSn chia iJ ... bang may He thd''ng ti huyen phu da duOc dp dung thi3f nghiem tai day chuyen tuyln than cue than don xd bai che bie''n than Udng Thuong, budc dau da cho ket qua kha dn djnh, ft bj anh hudng bii cac... thing diiu khiin NMT { start ] DCmg tu^n tu xudi dbng than Khdi dftng tu^n tu ngUdc dbng than Cac thiet bj phia trudc su c6 theo thCf tu dong than difrig l^p tCte, Cic thi^t bj phfa sau tiS''p tuc... dieu khien tai hoat ddng vd trang thdi sy cd ddy chuyen tudyen than cue cde thie''t bj; than don xd, bai ehe bid''n Dieu khien he thd''ng; than Udng Thyong, eac can bd - Gidm sat ede thdng sd nghien