UYBANNHANDANQU~5 TRUONG TRUNG C.P NGHE KY THU~T CONG NGHt HUNG VUONG , ' GIAOTRINH ' ? Di@u khi@n thlly l\fC ' Nghe: Di~n tu cong nghi~p TRINH DO• TRUNG CAP TPHCM-2019 LOI G161 THitu BS dap ung yeu c~u giang d?y chuong trinh dao t?O nghS Di?n tu cong nghi?p cung nhu vi?c cung d.p tai li?u giup cho sinh vien h9c t~p, khoa Di?n tu chungtoi da tiSn hanh bien so~ giao trinh" DiSu khiSn thuy lµc". Giao trinh nay giup cac b~ c6 them ky nang: ~ ThiSt l~p dugc so d6 h~ th6ng diSu khiSn truySn d9ng thuy lµc theo yeu c~u d~t ra cho nhfrng thiSt bi cong ngh~ don gian, diSn hinh. - ThiSt kS va Hip rap dugc cac ill?Ch thuy lµc, di?n - thuy lµc CO' ban; - V~ hanh dugc cac tr?m thuy lµc trong cong nghi~p. Day la cong trinh dugc viSt bai d<)i ngu giao vien da va dang cong tac t?i truong TCN KTCN Hung Vuong cung v6i sµ g6p y va phan bi~n cua cac doanh nghi~p trong l'inh VlJC lien quan, tuy v~y, cu6n sach chic chin vfin khong tranh khoi nhfrng khiSm khuySt.
Chung toi mong nh ~n dugc y kiSn dong g6p cua b?n d9c dS cu6n sach dugc hoan thi?n hon trong l~n tai ban. Xin tran tr9ng gi6i thi~u cung b?n d9c ! Qu9n 5, ngay J thang i nam 20 Bien SOfln LeBaoKhanh Ml}C Ll}C DEMl}C TRANG r ~ A A GIOI THI¥U VE MO DUN. 3 GIOI Tmtu ff¥ THONG DIEU KHIEN BANG THUY Ll/C. T6ng quan vs h~ th6ng thuy Ive.
Gi&i thi~u vS h~ th6ng thuy Ive. Vu nhuge diSm eua h~ th6ng thuy Ive. C§u true eua h~ th6ng thuy Ive. Cae dinh lu~t va don vi do luong ·······································:····························· 6 2.t thuy tTnh Ps:.
Phuong trinh dong ehay lien tµe. 7 Bai 1: THIET BJ CUNG CAP VA xu LY oAu .p nang lugng dAu ep. Cae lo~i bam. Ch9n kieh thu&e bS <lAu .u eua bS dAu.
Xu ly dAu. 12 T A ? ? Bili 2: CAC PHAN TU THUY Ll/C,. TT " DI¥N - THUY L\J C THONG Dl}NG. Van an toan va van tran.
Van giam ap. Ra leap Ive .u ehinh luu lugng. Van tiSt luu .u ehinh hu&ng. Van dao chiSu.
DiSu chinh va 6n dinh v~n t6c. DiSu chinh bing van tiSt luu. DiSu chinh bing thS tich. ThiSt bi ph\l cua h~ th6ng dfiu ep.
ThiSt bi lam ngu9i. Ong dfrn, 6ng n6i. Ac quy dfiu .P B~T 11¥ THONG THUY Ll/C, BI:E:N -THUY Ll/C. 37 TRONG CONG " NGHI~P-.
Ml_lc dich. Lip d~t h~ th6ng truySn d9ng thuy 1\rc. Tinh toan thiSt kS h~ thuy h,rc chuySn d9ng tinh tiSn. Cac vi dl_l.
42 Bai 4: TIM VA SUA LOI TRONG Ht THONG THUY Ll/C. Bom phat ra tiSng 6n ho~c rung d9ng qua muc .it d~u ra cua bom th.lp ho~c khong 6n dinh .it dfiu ra cua bombing khong. Xy lanh thuy h,rc khong ho~t d9ng:. Xy lanh thuy Ive di ch~m, rung d9ng ho~c khong 6n dinh.
Nhi~t d9 dfiu thuy Ive qua cao:. 50 Bai 5: UNG DVNG PLC TRONG BIEU KHIEN BI:E:N - THUY Ll/C. L~p trinh b~c thang PLC. Cac ham logic.
Ham Exclusive OR (XOR). Mach nhiSu ngo ra. Cac Role nc;,i. Role diSu khiSn chinh.
Be;, dinh thcri. Cac be;, dSm. Thanh ghi dich chuySn. 59 Bai 6: cAc M~CH THUY LVc, BIE:N - THUY LVc UNG DVNG.
61 2 Bai t~p thiSt kS m~ch di Su khiSn theo nhip ., TAI Ll~U THAM KIIAO. 75 1 GIOI Tmtu VE MO BUN Vi tri, tinh ch§t cua mo dun - Vi tri: Mo dun duqc b6 tri h9c sau cac mon h9c, mo dun ky thu~t CO' so va cac mo dun chuyen mon nghS .t: La mo dun tg ch9n trong chuang trinh dao t~o nghS Di~n ti'r cong nghi~p. Ml}C tieu cua mo dun Sau khi h9c xong mo dun nay nguai h9c c6 nang lgc: - Thi@t l~p duqc sa d6 h~ th6ng diSu khiSn truySn d9ng thuy lgc theo yeu du d~t ra cho nhung thi@t bi cong ngh~ dan gian, diSn hinh. - Thi@t k@ va lip rap duqc cac m~ch thuy lgc, di~n - thuy lgc ca ban; -v~ hanh duqc cac tr~m thuy lgc trong cong nghi~p.
- Ung d1,mg h~ th6ng di Su khiSn PLC dS di Su khiSn 1 s6 m~ch thuy h;rc thong dl,lllg. - Tim va khic phl.,1c duqc cac 16i trong h~ th6ng thuy lgc. - Thgc hi~n dung cac quy tic an toan trong v~n hanh, bao duong cac thi@t bi cua h~ th6ng truySn d9ng thuy lgc. - Chu d9ng, sang t~o va an toan trong qua trinh h9c t~p.
Nc)i dung cua mo dun 1. Bai mo diu 2. Thi@t bi cung c§.p va xu ly diu 3. Cac phfin tu thuy lgc, di~n - thuy lgc thong d\,lng 4.
Lip d~t h~ th6ng thuy lgc, di~n - thuy lgc trong cong nghi~p 5. Tim va sua 16i trong h~ th6ng thuy lgc. Ung d\lng PLC trong diSu khiSn di~n - thuy lgc. Cac m~ch thuy lgc, di~n - thuy lgc ung d\,lng.
3 Bai mO' ctAu GIOI TH}¥U ff¥ THONG DIEUKHIEN BA.NG THUY LVC 1. T6ng quan v~ h~ th6ng thuy l\fc 1. Gi6i thi~u v~ h~ th6ng thuy l\fc H~ th6ng thuy h;c (Hydraulic systems) dugc.sir dvng nhiSu trong nganh chS t~o may hi~n d~i va trong cong nghi~p Hip rap. Ngoai ra, cong ngh~ thuy h,rc con dugc ung dvng trong m<)t s6 linh vµc d~c bi~t khac nhu hang hai, khai thac him mo, hang khong.
Trong h~ th6ng thuy h,rc, ch,t long co ap su,t dong vai tro trung gian truySn lgc va chuySn d<)ng cho may cong ngh~. Qua trinh biSn df>i va truySn tai nang lugng dugc mo ta tren hinh 1.tfc, chuyfin h~ccdnang coapsuat H~ thong oog d§n, Co du thli:; hilrth don Born thuy h/c cac valve dleu khie'. Motor Ch~loog Hinh 1.2 Cac ung d\lfig ca ban cua thuy h;rc co thS chia thanh hai linh vµc chinh: ThiSt bi thuy h,rc di chuySn (Mobile hydraulics): di chuySn bing banh xe ho~c ducmg ray. Phin 16n trong s6 nay co d~c trung la sir dvng cac van thucmg dugc diSu khiSn bing tay.
ThiSt bi thuy h;rc c6 dinh (stationary hydraulics): lam vi~c a m<)t vi tri c6 dinh, do do thucmg sir dvng cac van di~n tu kSt hgp v&i cac thiSt bi diSu khiSn di~n tu hi~n d~i. * So sanh cong ngh~ thuy lµc v&i cac d~ng khac: Xet vS vai tro t~o ra h;rc, chuySn d<)ng va cac tin hi~u, ta so sanh 3 cong ngh~ thuong sir dvng: di~n, khi nen va thuy lµc. Co thS tham k:hao bang sau (Bang 1. Uu nhuqc di~m cua h~ th6ng thuy l\fC Qua bang so sanh, co thS tom tilt cac uu diSm va nhugc diSm quan tr9ng cua cong ngh~ thuy lµc: 4 ·.
M9t s6 uu diSm quan tn;mg: • TruySn d9ng cong su~t 16n v&i cac phln tu c6 kich thu&c nho • Kha nang diSu khiSn vi tri chinh xac • C6 thS khoi d9ng v&i tai tn;mg n~ng • Ho~t d9ng em, tron khong phv thu9c vao tai trc,mg vi ch~t long hiu nhu kh6ng chiu nen, them vao d6 con su d1,1ng cac valve diSu khiSn luu luQ'Ilg • V~n hanh va dao chiSu em a. • DiSu khiSn, diSu chinh t6t.1 I Eltdtlcily I j Hydtaullcs PMumatlcs: Co11tam;11ation No dl sadvantat;ts apart from r11ergy lo~~ l11vir1.mm•fltal Risk of i:x:1,lo sion ill mt~in ilrN1$, S1m$illl'i:ln c;r;e oftl. lrrsimsitl ~ io fllrttpetatu re. fluttua1io:i1, tisk of fire irl ,ase, of l@,!'k.age, Olffkult, 01ilv in smaU Qu<1ntities Limited u~ing 1l;1flt'fif~.oIOOm, Up 'lo l.00) m, !law rat~ v ,,, 2 - 6 m/s, ~ow ratev 20-40 mis, sitl'lal spa>d upto 1000 mjs.
[lllfitu It ~nd l"Xptn$lv ~, Sm.t m,ing ('jii!1d,r5,, iood Spil«i Simp[(> u',i ng t'(lin dtl'S, timiltd forces, speed tl!gulatio ncnll'I' rnmroL very la11e fom~s,. ro,ce-s, speed extternely, load• posMbl1;> at great tost di!f)endent Rotary mlltio11 Simple, high turni!l,g momeo,t, low Sf>i!'~d, Posltlonl11g amimy ~cision to d µ11Hmd easimo Pl'!l{isi0r1 of up tu d µm can oo Witho utloarJ charis.e predsiit'in of ll(hiev!! achieved dei.:~ndi11g ou 1/10 mm possftiile, exp~ndittJrt;". SUbility Vrry g,;i'(K! v,tlutl".hth('d High, ,inwr,i! i•,.1)!mi,M using ttH!d1ar11cal iirlks. 111cornpt1!Sslb!e, i!taddition, tiie pres surt 1.!!ve! is co11,~iq1m1bl[il hiSl'rer l!Uiri (l}r µnt>!!111lt!1t~.
Very high km:.~ rnr, bi' realized. high systempressureoJupto 600 fotces li.rtl' fortes c~n bl' pw$Sur!! imd cv~ndl!f 1ili.1m~er g!)1ieta1ed f,: JOOOkN. 5 4c M◊t s6 nhuqc diSm quan tr9ng: • C6 thS gay bftn, o nhiSm moi truong. • Nguy hiSm khi gin lira.
• Nguy hiSm khi ap suit vuqt qua muc an toan (d~c bi~t v&i 6ng d~n). • Hi~u suit thip 1. Ciu true cu.a h~ th6ng thuy Ive H~ th6ng thuy Ive, cfing gi6ng nhu h~ th6ng di~n - khi nen, duqc chia thanh ba phAil chinh: Phin ngu6n thuy Ive ( Power supply section) nen chit long (diu) dSn ap suit nhit dinh. ThiSt bi chinh g6m d9ng ca M ( d9ng ca di~n ho~c d9ng ca d6t trong) d~ d9ng bam, chung thvc hi~n vi~c biSn d6i di~n nang ho~c ca nang thanh nang luqng thuy Ive tich lfiy trong chit long c6 ap suit.
Trong kh6i nay con phai c6 cac thiSt bi nhu van an toan, van diSu ap, d1,mg c9 chi thi. Phin diSu khiSn thuy Ive (Power control section) diSu khiSn, duy tri hu&ng chuySn d9ng, gia tri Ive tac d9ng cua cac phin tu d~n d9ng, g6m cac van di~n tu, van diSu chinh luu luQ'Ilg. cac phin tu diSu khiSn nh~n cac tin hi~u diSu khiSn tu khau signal control section thuong g6m cac phin tu cip tin hi~u diu vao (signal input) va cac khau xu ly tin hi~u (signal processing) Ph§.n cac ca ciu d~n d9ng ( Drive section) nhu sylinder, motor thvc hi~n biSn d6i nang lUQ'Ilg thuy Ive ( giai ph6ng ap suit chit long) thanh CCY nang d~n d9ng cho cac thiSt bi cong ngh~. ',,-,-~~- ,,) ' ( ' iii:l' :Ii l&t~rfil>le I ,9.-- _'f,,, P-r ilii /~i S1gn;11' tO<ll~ Iii i OUll>Ut -;a 111 .y j!I Controlene,rgy supply M!dilffl i'I ,.
Cac ctjnh luit va dO'n vj do hrO'ng Thuy h,rc h9c la khoa h9c vs lµc va chuySn d(mg duqc truySn bai moi tnrong chfit long. N6 thu(>c vs lrnh vµc ca h9c chfit long (Hinh 1. Sµ khac bi~t giua Thuy finh - Thuy d(>ng lµc h9c: Thuy finh c6 lµc tac d1,mg bing ap sufit chfit long nhan v&i di~n tich tac dl;lng va thuy d(>ng c6 lµc tac dl;lng bAng k:h6i luqng chfit long nhan v&i gia t6c dong chay. Hydro,mechanics ca hqc crrat long Hydrostatics Hydrodynamics Thu,;,unh Thu:ii a9ng 11,tc Force effect through Force elfed through mass accelaration pressure area - [kg_m] F -m.
Ap suit thuy tinh Ps: Ps = h. g = [N/m2] =[Pascal] Trong d6: P s la ap sufit thuy finh ( hydrostatics pressure) h chiSu cao c(>t nu&c [m] p ty kh6i cua chfit long [kg/m3] g gia t6c tr9ng truong [ 9.8 m/s 2] Ap sufit thuy finh khong ph\l thu(>c vao hinh dang cua binh chua ma chi ph\l thu(>c vao chiSu cao c(>t nu&c va ty k:h6i cua chfit long.