NGHieN CLTU-TRAO06l GIAI PHAP NANG CAO DO CHINH XAC VI TRI CAT DOT BIEN DANG TAM ClTC LANG TRONG THIET KE CHE TAO MAY CAN HINH SOLUTION FOR IMPROVING THE PRECISION OF PROFILE PUNCHING POSITION OF COLLECTING ELECTRODE PLATE IN THE DESIGN AND FABRICATION OF ROLL FORMING MACHINE TS Dinmg Van Long, ThS Tran Hong Lam Vien Nghien cuu Co kfai, Bd Cdng Tfauong TOM TAT Tdm dipn cue lang (CE) thiet bi IQC buitinhdiin (LBTD) trang bi cho cdc nhd mdyxi mdng, nhipt dien xdy dung mai nhihig ndm gdn ddy diu dugc nhdp khdu tir nu&c ngodi Mpt so casa nu&c co ddu tu che tgo tdm CE phifc vu cho cong tdc phy timg sua chira, nhiin, cong nghp che tgo chua phu hgp nin mirc dQ cong vinh vu0 nguang cho phip theo chitieu^ thugt, thiit ki cua cdc nuac chdu Au, G7 Bdi bdo gi&i thipu ca cau yd gidi phdp hieu chinh sai so vi tri tgi cong dogn cdt dpt biin dgng cua mdy can hinh sdn xudt tdm CE Day la gidi phdp hodn thipn cong nghi, cho phep dan gidn hoa ddy chuyin sdn xudt, ndng cao nang suat, tinh on dinh vd dp chinh xdc che tgo Chat lugng sdn phdm tam CE sdn xudt ddp uTtgyeu cdu ky thudt thiet ke cua congtychuyen ngdnh ve LBTD Mitsubishi Heavy Industries Mechatronics systems, Nhqt Bdn Sdn phdm tdm CE sdn xudt nu&c, gop phdn ndng cao ty li npi dia hoa thiet bi LBTD cung cap cho nhd mdy nhipt dipn Tir khda: Tdm dien cue ldng, IQC buiffnhdipn, hiiu chinh sai so vi tri ABSTRACT The collecting electrodes plate (CE) of Electrostatic Precipitator ( ESP) systems of newly built cement plants and thermal power plants in Vietnam have been imported mainlyfromabroad during recent years Some domestic mechanical manufaturers have been investing fabricating apparatus in order to fabricate collecting electrodes for replacement and repair service but the quality of these products have not been qualified enough compared to the original products due to the fact of inappropriate fabricating process and technology In the content of this paper we present an efficient solution to correct the inaccuracy in positioning control which is being applied in the profile punching section ofthe roll forming machine that produces plates CE This solution is one of the measures to improve the fabricating technology, simplify the manufacturing apparatus, enhance the productivity and product's quality as well as product s stability The actual products have passed strictly technical test of experts from Misubishi Heavy Industries Mechatronics systems company, a specialised contractor for ESP in Japan The collecting electrode plates produced in local is resulting in the increasing ratio of localisation of ESP systems for thermal power plant Keywords: Collecting electrode plate ESP, position correcting » ISSN 0&66 - 7056 TAP CHi CO KHf V I £ T NAM ^ • Sd 10 ndm www.cokhivietnam.vn 2016 NGHIEN CLfU - TRAO DOI l.B^TVANDE -D^,= 30±0,5mm Tam CE thiSt bi LBTB cimg cSp clio d\r an nhiet dien Thai Binh 1, co dac diem clu tao nhu hinh la loai chi tiet tam mong, chiSu dai ldn, bien dang phiic tap, c6 so lucmg nhilu, tong khoi lupng Ion Yeu ciu dung sai hinh dang hinh hpc: - Do khong phSng; < lOnun - Do khong thing: < 3.0mm - Dp v?n xo5n: < 10mm 2.2 Ddnh gid lira chon cong ngh^ che tao * M[ f Hinh Bien dpng tdm dipn cue ldng Ddy Id chiing lo^i chi tiet cd yeu cdu ky thudt cao, tnrdc ddy deu nudc ngoai cung cdp cho cdc d\r dn nhi?t di?n, xi mdng xdy dyog mdi ciia Vi$t Nam De ddm bdo chat Iupng, cfai tiSu ky thu^t tdm CE nudc che tgo thay the dupc sdn phdm nhap ngoai, Vi^n Nghien cuu Ca (Narime) ddu tu nghien cuu cdng ngh?, thiet bi pfauc vy cfao viec sdn xudt tam CE ndi tren bang nang I\rc nudc thdng qua qud trlnh th\rc hi$n di^ dn khoa hpc cdng ngh? cap Nfad nudc che tao thiet bi LBTD cdng sudt 1.000.000 Nm%, cho nhd mdy nhi^t dien than 2, GIAI QUYET VAN Bfe 2.L Veu c4u ky thuat ciia san pfa4m tim CE Tdm CE cd cau tao nhu hinh I, cd cdc yeu cdu ky thudt chinh sau: Ydu cau vd kich thudc: - Dp day vgt lieu: = 1,2 mm - i ^ = 15.530 ±5 mm Cdng ngfae che tgo tdm CE tii vgt Ii?u tdn mdng, sdn pfadm cd chidu ddi ldn, bien dgng phuc tgp, pfauong phap sdn xudt phd bien tren thd gidi la su dimg cdng nghe cdn tgofamfa.Vdi cdng nghe ndy cho phep sdn xudt logt Idn, dam bdo dp chinh xdc, tinh dn dinh sdn phdm, dd mdy mdc &idt bj san xudt cd khd nang trang bj miic dp ti; dpng hda cao Tuy nhien, cdu tgo cua phdn tai cudn cd kicfa thudc khe cudn nhd (kich thudc 5,5mm), kfadng cfao phep dp dung cdt dpt todn bd bien dang I budc md vdn ddo bdo mdp cudn khdng hi b?p Vi vgy, can xdy dyng gidi phdp cdng nghf cdt dOt bien dgng tai vi tri cdt diurt sdn phdm cho ddp ting dupc yeu cau dp chinh xdc vi tri vd ndng sudt cao Cd hai phuong an Ii;a chpn: - Phuong dn I: Sir dung dao cat phdng cat diit tgi cdng doan cat phang cho phdi cdn dgt cfaieu dai ydu cau cua sdn pfadm Pfauong an ndy cd uu di^m Id khdng phdi gidi quylt hien tupng mdp ddu tai euon nhu d hinh 2, vl cdng doan uon tao tai cudn dupc hinh thdnh sau cdng dogn phdi da dat chieu ddi sdn pham yeu cdu Tuy nfaien, lgi cd mpt s6 nhupe diem chinh sau: Nang sudt th^p vi phdi cdp phdi theo chu ky; chat Iupng khd on dinh vi khdng t|n d\mg dupc phdi cua chi tidt sau lara cii din hudng de han chd khd nang xd I?ch chi tiet sang ben phdi hodc trdi qua trinh cdn tgo hlnh, phdi sua ngupi phan mdp tai cudn pMa diu vd cudi sdn phdm dac diem ciia cdng ngh? cdn tryc gay ISSN 0866 - 7056 TAP CHf CO KHl VIET NAM Sd 10 ndm 2016 WWW.Cftkhivipfnam v n NGHieNCCrU-TRAO Bdl - Phuong an 2: Su dung dao cat hinh cat dut sdn phdm tai cdng dogn cat bien dgng Phuong an ndy cd cac uu diem: Nang sudt cao cdn dupc lien tyc, chat lupng dn dinh hon su dung dupc chi tidt sau ldm ddn hudng gliip khdng che dupc khd nang xd lech ve hai ben cua chi tiet trudc Tuy nfaien, phucmg dn ndy lgi cd nhupe diem: Phdi gidi quyet hifn tupng mdp dau tai cudn (hinfa 2) vi cdng dogn cat dut sdn pfadm th^c hifn sau cdng doan udn tgo tai cudn Hinh Gia cong dong th&i 16 cdng nghe 1, vd cdc rdnh Id Budc 2: Sau cdng doan tgo hinh hoan chinh, tidn hdnh cdt dpt bidn dang logi bd ddi phdi cdng nghf 200 d budc (hinh 4) Budc 2, chinh la budc cat dot lgp lgi vi tri Id cdng nghf dupc hmh thanfa tii budc (xdt tren gdc dd vi tri vet cat) Hinh Hinh dnh mop dau tai euon cdt dpt I bu&c So sdnh hai phuong an neu tren, phuong dn cdng ngh? dupc lua chpn Id phuong dn 2.3 Giai phdp cdng nghf Dd dat dupc myc dich theo phuong dn ndu tren, cdc tdm CE se dupc can tao hinh noi tiet lien tuc tren todn ddi pfadi, dau cua tdm CE sau ndi tiep vdi dudi cua tam CE trudc, vifc chong mdp ddu tai cudn dupc gidi quydt bdi hai budc cdng nghe sau: Budc 1: Dpt dgp ddng thdi cdc Id trdn tdm CE 100 dgt yeu cdu thidt ke, tao Io cdng ngh? phye vy vifc xdc djnh vd hieu cfainfa vj tri cat dpt bien dang, tao iS cdng ngh? phye vy vifc cat dpt bien dgng khdng bi mdp ddu tai cudn (htnh 3) d cdng dogn dpt dap Id trudc vdo cdn tao hlnh Hinh Vf tri ddi phoi cdng nghp De gidi quylt dd chinh xdc vi tri cua budc cat diing vdo vi tri ciia budc cat su dyng CO cdu ddu dd co ket hpp ket fapp sensor cdm bien Phuong phdp dieu khien faifu cfainfa sai sd vi tri hogt dpng nhu sau: Lo cdng nghf (hinh 3) dupc dung dl nhdn biet vi tri phdi nhd co cdu ddu dd co 100 + sensor cdm bien 400 (hinfa 5) Ddu dd cua CO cdu dd Id cdng ngfaf I ludn ty vdo be mat tam phdi vdi mpt lyc tJ' nfadt djnh sire cang ciia Id xo cho gap Id cdng nghf (Id thiing) thi ddu dd se chuyen dpng xudng dudi tdc dpng ciia co cdu Id xo vd t\r trpng cua ddu dd Cam biln kim loai 400 Idp tren co cdu ddu dd 300 dd se phdt hifn dupc su thay '^ ISSN 0866 - 7056 TAP CHf CO KHf VI$T NAM Sd 10 ndm 2016 www.cokhivietnam.vn NGHIEN CLfU-TRAOD6I d6i vi tri cua d4u va bao tin hieu phat hien 15 cong nghe tren tam phoi Hinh Ld cong nghi vd ea cau ddu dd PLC dua vao tin hieu Si ta lenh dimg dpng co truySn dpng chinh va kich ho?t dao cit bien dang host dpng cat diit dai phoi cat bo cong ngh?, hoin tit mpt chu ky tao sto phim hoan thi$n D6ng thoi, thcri diSm nh$ii biSt 16 cong nghe cung dupc PLC dung de kiSm tra va hifu chinh lai vi Iri phoi dang tinh t o ^ difa tren s6 xung encoder, trAnh dupc sai so tich liiy cho san phim tiSp theo Vcfi vi$c s\l d\mg tin hifu bao vi tri cuoi (la 16 cong nghe 1) h$ th5ng dieu khijn dupc thiSt ki co tinh nang xic dinh vi tri cu6i (hinh 6) voi gii tri sai s6 Ad^, < 0,15mm, sai s6 dip ling dupc dung sai cho phep D^= 30 ± 0,5 mm 8) cung cip trvrc tiSp cho Cong ty Mitsubishi Heavy Industries Mechatronics systems, Nhjt Ban la nha thiu chinh cua d\f an nhiet dien ThSi Bmhl Hinh Hinh dnh todn cdnh cua day chuyen m ^ cdn sdn xuat tdm CE Hinh Hinh dnh tdm CE sdn phdm KET LUAN '\Z Vol giii phip hifu chmh sai so vi tri cit bien d?ng tim CE c6 su kft hpp giiia co ciu co va sensor cam bien tic gii de xuat da dem 1^ ket qui nudrc thijt ki, chi tao dupc miy cin hinh dimg cho sin xuat tim CB diptogtieu Hmhd Sadd mgeh vong dieu khien vi tri cua mdy can chuan thiit ki cua Nhat Bin Miy c6 ira diim: Thiit ki gpn, cac cong doan gia cong lien hoin, diu vao 14 phoi tdn cupn, diu la tim CE sin Giii phip cong nghe neu tren dupc lim CP SP de thiet ke che tao day chuyen miy cin phim, mtic dp tu dpng hoa cao, van hinh don gian, gii thinh may re hon nhip khiu tim CE (hinh 7) diing san xuit tim CE (hinh ISSN 0866-7056 TAP CHl CO KHi VI$T NAM, S610nam2016 www.cokhivietnam.vn NGHIEN cCru-TRAO e d i May cdn hinh sau cfae tao thdnh cdng da dupc iing dyng de sdn xudt loat Idn tam CE Ld sdn phdm 300 tdn tdm CE dpt mdt cua Vifn Narime sdn xuat da dupc Tdng thdu Marubeny Power Sj^ems vd Cdng ty Mitsubishi Heavy Industries Mechatronics Systems - Nhdt Bdn ddnh gid, nghifm thu, chdp nhdn cung cap cfao du an nhift dien Tfadi Binh 1, thay the nhdp ngoai.*t* Ngay nhdn bdi: 02/10/2016 Ngdy phdn bien; 15/10/2016 Tdi lifu tham khao: [I] [2], George T Hahnos: Roll Forming Handbook CRC Press, Taylor & Francis Group, 2006 Sabert Oglesby, Jr.: A Manual of Electrostatic Precipitator Technology, Part - Fundamentals Southern Research Institute, Alabama, 1970 [3] S7-1200 Programmable Controller System Manual, Siemens, 2014 [41- Yaskawa AC Drive Al 000 Quick Start Procedure, Yaskawa, 2013 ISSN 0866 - 7056 TAP CHf CO KHf V I £ T NAM Sd 10 nam www.cokhivietnam.vn 2016 ... che tao * M[ f Hinh Bien dpng tdm dipn cue ldng Ddy Id chiing lo^i chi tiet cd yeu cdu ky thudt cao, tnrdc ddy deu nudc ngoai cung cdp cho cdc d\r dn nhi?t di?n, xi mdng xdy dyog mdi ciia Vi$t... xdc, tinh dn dinh sdn phdm, dd mdy mdc &idt bj san xudt cd khd nang trang bj miic dp ti; dpng hda cao Tuy nhien, cdu tgo cua phdn tai cudn cd kicfa thudc khe cudn nhd (kich thudc 5,5mm), kfadng... bien dgng tai vi tri cdt diurt sdn phdm cho ddp ting dupc yeu cau dp chinh xdc vi tri vd ndng sudt cao Cd hai phuong an Ii;a chpn: - Phuong dn I: Sir dung dao cat phdng cat diit tgi cdng doan cat