NGHIEN CUfU-TRAO OCl ^NGHIEN CLKU, THIET KE, CHE TAO N G L T HAI LOP^ XI LANH BOM Y8-6MA2 RESEARCH, DESIGN, MANUFACTURE TWO LAYER XYLINDER OF THE Y8-6MA2 PUMP TS Phan Thach H6, ThS Mai Quy Sang, KS Dd Thai Cu-dTig,PGS,TS Dao Duy IVung Vien Nghien ciiu Ca khi, Bd Cdng Thuang TOM TAT Phu tung mdy bam dung khai thdc ddu a nu&c ta chu yeu Id nhgp tir nu&c ngodi Gid thdnh rdt ddt vd khdng chu ddng sdn xudt Viec nghiin cuu, thiet ki, che tgo dng lotxi lanh hai l&p bam Y8-6MA2 nhdm ddp img yeu cdu trin Bdi bdo trinh bdy tinh todn kiem tra va cdng nghi chi tgo dng lot bdng phuang phdp ep nong hai l&p Tir khda: Ong lot xilanh hai l&p, cdng nghe chi tgo, ep ndng ABSTRACT All the spare parts of pump in oil - gas industry in our country are imported from the development countries Its price is very high and time ofdelevery is very long We are not positive in production Research, design and manufacture the two layer cylinder of the Y8-6MA2 pump meet this purpose The paper presents the testing calculation and the manufacturing technology of the cylinder by the thermal pressing method Keywords: Two layer cylinder, manufacturing technology, thermal pressing method ISSN 0866 - 7056 TAP CHI CO KHi VIET NAM, Sd 1+2 nam 2016 www.cokhivietnam.vn NGHIEN CUfU - TRAO Q6\ B A T VAN B E Bdng 1: Cdc chi tiet Sa cdu tgo mdy bam piston tdc dung kep Trong cdng nghiep khai thae d i u khi, may bam la thidt bi rk quan ti-png Viet Nam, TT Ten chi ti^t TT Ten chi ti^t 100% b a m khai thae dau la nhap tii nude Can piston Hop van ngoai Cac phu tiing mau mdn, chdng hdng Xi lanh Be hut nganh cdng nghiep nude chua ch8 tao Ong hut Tay quay dupe nen phai nhap khSu vdi gia cao va Van day 10 Thanh truySn thdi gian chd dpi lau, anh hudng tdi san xuit piston 11 Con truot Vide khao sat, thiet ke, chd tao cac phu tiing thay Van hut thd cho may bom Y8-6MA2 la r i t cip bach, ddi hdi su hieu biet ve khoa hpc cdng nghe, yeu ciu Nhd cd he thdng tay quay- truyen, vd thidt hi chuyen dimg phiic tap nhung mang lai chuyen ddng quay ciia dpng ca se dupe bien hi?u qua kinh te ldn chuyen ddng tinh tien qua lai ciia piston xi lanh vdi hanh trinh S^2R, tuang iing M y c TIEU vdi hai diem B,, B, Khi piston di tii B, den B^ Nghien ciiu, thiet ke, che tao dng Idt xi thi khoang B, thuc hien qua trinh hiit, khoang lanh hai ldp b a m Y8-6MA2 phuc vu cdng nghiep B^thuc hien qua trinh day Khi dd, the tieh khai thae dau khi, thay thd hang nhap khiu tii khoang BI tang len, ap suat giam dan va nhd han nude ngoai, nang cao nang luc nganh Ca che ap suat mat thoang Pa, dd chat ldng ttr be chiia qua van (6) vao budng lam viec Bj, dd, tao nude van (4) ddng lai Cdn ben khoang B^ thi the tich budng lam viec giam, ap suat tang len, van (6) NOI BUNG ddng lai va van (4) md ra, chat long se dupe day qua van day (4) va dng xa (7) Khi piston tdi B^ thi 3.1 Nguyen ly lam vi^c cua b a m Y8-6MA2 khoang Bj kdt thiic qua trinh hiit, khoang B^ kdt thiic qua trinh day Qua trinh ngupc lai, piston di tu B^ den B | thi khoang B2 thuc hien qua trinh hiit, khoang B, thuc hien qua trinh day Nhu vay, mdi vdng quay cua true chinh thi bom thue hien duac hai lan hiit va hai lan day (hai chu ky hay cdn gpi la tac dung kep) Neu tay quay tiep tuc quay thi bam lap lai qua trinh hut va day nhu cii [1] Hinh 1: Sa nguyen ly cdu tgo mdy bam piston tdc dung kep 3.2 Cac hir hdng ong lot hai ldp thirong gap Ong Idt xi lanh lam viec dieu kien khac nghiet, chiu ap suat ldn, vi vay thudng cd nhiing hu hdng sau: "^ ISSN 0866 - 7056 TAP C H i CO KHi V I £ T NAM, Sd 1+2 nam 2016 www.cokhivietnam.vn NGHIEN CUfU-TRAO D | - Bd mat lam viec bi mdn theo chieu ngang khdng bing tao nen dp d van Nguyen nhan phin luc ngang tac dung mik vao xi lanh gay nen hien tupng mdn meo Gay tang khe hd lap ghep giiia piston va xi lanh gay giam cdng suat - Bd mat lam viec hi mdntiieochieu dpc khdng bang tao nen dp cdn Nguyen nhan vung piston lam vide cd ap suit cao smh ma sat giiia xi lanh va piston, vi vay, vung dd bi mdn nhieu nhat tao nen dp cdn - Ong lot xi lanh hi xude: Trong diu cd tap chit, cac hat tap chat cha xat nen mat guong xi lanh lam nd hi xude - Ong Idt xi lanh bi niit, va: Ong lot xi lanh cd the hi nut theo chieu dpc hoac chieu ngang Thudng xuit hien va phat trien tai be gdi dd cua dng Idt xi lanh Ong Idt xi lanh bi va hi va dap manh vdi true [2] 3.3 Tinh toan ong Idt hai Idp a) Cac thong sd ky thuat may bomi Y8-6MA2: -Ma hieu bam: Y8-6MA2 - Bam lam viec hanh trinh kep - Sd xi lanh (cai): - Cdng suit ddng ca dien (kW): 585 - Cong suit thuy luc (kW): 500 - Sd hanh trinh kep ciia piston phiit (lan/ phut): 66 - Hanh trinh Piston (mm): 400, - Dudng kinh lam viec cua xi lanh (mm): 170 - Luu lupng bam (1/s): + Nhd nhit; 19,7 + Ldn nhat: 51,6 -Ap luc diy ciia bam (MPa): + Nhd nhat: 10 + Ldn nhit: 25 - Dudng kinh true piston (mm): 70 - Tai trpng tinh toan len true piston (kN): 300 - Dudng kinh van: (nun) 145 - Kich thude phu bi (m): + Dai: 5,1 + Rpng: + Cao: 2,71 - Khdi luang khdng tinh banh da (T): 26,7 b) Ket qua tinh toan (bang 2) Bdng 2: Tinh todn cdc thong so chinh cua bam Y8-6MA2 [3], [4] TT I I 1.1 1J2 TfeN G O I , ^ NGHiA HI£U CONG T H C C - CO SO UTA CHON d A TRI B.VJ T f n h toAn a s 16t x i l a n h U n g 5uS.t t u o n g d u o n g T y s d giOa d u f m g k i n h t r o i % vd d i r d n g kinh n g o ^ D u o n g kinh t r o n g D u o n g kinh ngoai T y s d giOa gi6i h ^ n chky v ^ li^u k h i k ^ o v d i giiiri h ^ n c h a y n6xi CFa ' ( l - 181.84 MPa Pp = P H ' k , 4U5 MPa 25 Mpa Ic'Hvl PH k MPa 0.74 1,65 - 1.7 1.65