Khuấy chat long

7/30/2019 Khuy chat long

1/17

AI HOC QUOC GIA TP.HCM

TRNG AI HOC BACH KHOA TP.HCMBO MON MAY & THIET B

TH NGHIEMQUA TRNH THIET B

Phuc trnh th nghiem

Bai : KHUAY CHAT LONG

CBHD : GV.Nguyen Th NhNgoc

Sinh vien : Le Hoang TrungMSSV : 61003636Lp : HC10HD

Nhom TN : 3.7Ngay TN : 02/04/2013


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ContentsI. TRCH YEU. .............................................................................................................. 1

II. C S LY THUYET. ......................................................................................... 1

II.1. Khai niem c ban: ........................................................................................... 1

II.2. Xac nh cong suat canh khuay P: ............................................................. 1

II.3. Gian o cong suat va cac chuan so ac trng: ................................... 1

II.4 Nguyen tac khuech ai ong dang:.............................................................. 3

II.5. Tien oan cong suat trong cac he thong thc:....................................... 3

III. THIET B TH NGHIEM: ................................................................................... 4

III.1. Dung cu: ............................................................................................................ 4

III.2. S o thiet b th nghiem: .............................................................................. 4

IV. PHNG PHAP TH NGHIEM: ......................................................................... 4

IV.1 Phng phap o:................................................................................................. 4

Cong suat khuay: .......................................................................................... 4

Van toc khuay N: .......................................................................................... 5

IV.2 Cach tien hanh: ............................................................................................... 5

V. PHUC TRNH: .......................................................................................................... 6

V.1. Ket qua th nghiem: ..................................................................................... 6

V.1.1 Nht: .............................................................................................................. 6

V.1.2 Dau:............................................................................................................... 9

V.1.3 Xay dng gian o Cong suat khuayVan toc khuay cho bon

nht 50m3 ong dang bon nht th nghiem: ................................................. 10

VI. BAN LUAN: ....................................................................................................... 11

Cau 1: ....................................................................................................................... 11

Cau 2: ....................................................................................................................... 12

Cau 3: ....................................................................................................................... 12

Cau 4: ....................................................................................................................... 13

Cau 5: ....................................................................................................................... 13

Cau 6: ....................................................................................................................... 14

VII. PHU LUC ............................................................................................................. 14

VIII. TAI LIEU THAM KHAO ............................................................................ 15


3/17

TH NGHIEM QUA TRNH VA THIET B April 8, 2013

LE HOANG TRUNG: NHOM 3.7 1

I. TRCH YEU.Muc ch th nghiem:

Khao sat gian o chuan so cong suat khuay Np vi nhieu he thong cohnh dang khac nhau.

II. C S LY THUYET.

II.1. Khai niem c ban:Khuay la qua trnh lam giam s khong ong nhat trong chat long. o la schenh lech ve nong o, o nht, nhiet o nhng v tr khac nhau tronglong chat long.

II.2. Xac nh cong suat canh khuay P:Cong suat khuay P phu thuoc nhieu yeu to c bieu nh sau:

,,,,,,,( ZHDdNfP cac kch thc khac) (1)Bang phng phap phan tch th nguyen, ngi ta thiet lap cac phng trnhchuan so tnh cong suat khuay di dang:

... 53 dNNP p (2)

Trong o Np la chuan so cong suat, no phu thuoc vao che o thuy onglc hoc cua thiet b:

,...),(Re, GaFrfNp (3)

Vi:

53dN

PNp : Chuan so cong suat, vo th nguyen.

Re d N2

: Chuan so Reynolds cua canh khuay, ty so gia lc ly tam

& lc ma sat

Fr

N d

g

2

: Chuan so Froude, ty so gia lc ly tam & lc trong trng,ac trng cho s hnh thanh xoay pheu.

,...,,,, 21 SSD

H

D

Z

D

d

ttt

la cac tha so hnh dang cua he thong.

Trong o : P : Cong suat khuay (W). N : Van toc canh khuay (1/s). d : ng knh canh khuay (m) : Khoi lng rieng cua chat long khuay (kg/m3).

: o nht ong lc hoc chat long khuay (N/s.m).Nh vay van e c oan cong suat khuay rat phc tap v can biet ro caanh hng cua hnh dang he thong.

II.3. Gian o cong suat va cac chuan so ac trng:Tren thc te, ngi ta ch o c anh hng cua chuan so Reynolds vaFroude tren chuan so cong suat sau khi a xac nh cac tha so hnh dang.

Chuan so cong suat:


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Ta co the viet:P = Ff.v = J.A.vA ~ d2v ~ dN

Trong o : Ff: Lc ma sat. v : van toc lu chat. J : He so ma sat. A : Dien tch canh khuay vuong goc vi phng chuyen ong cuadong lu chat. d : ai lng chieu dai.

Vay PP

d N

Jd N

d N

J

d N

J

v0 5 3

3

5 3 2 2 2

~ ~ ~ (4)

Ta thay chuan so cong suat co y ngha cua mot thua so ma sat.Chuan so Reynolds canh khuay:

Suy thang t nh ngha chuan so Re cua dong chay khi thay van toc v bangso vong quay N

Re. . . .

D v d N

2

(5)

Chuan so Froude:La t so gia lc ly tam va gia toc trong trng

Frd N

g

v

d g

.

.

2 2

(6)

Chnh quan bnh gia hai lc nay tao nen xoay loc hnh pheu. Xoay loc nay

gay ra lc phu tac dung ngang len truc khuay, lc nay se rat ln neu osau xoay pheu ln hn o sau canh khuay tnh t mat thoang chat long vakhi o kh se lot vao chat long lam giam ang ke hieu suat khuay. S taopheu con gay s ao, lac truc khuay neu truc khuay khong c lap atchnh tam. Van toc khuay cang cao th kha nang tao xoay pheu cang ln,e khac phuc hien tng nay, ngi ta bo tr nhng tam chan e ngan cans tao pheu, khi nay hieu suat khuay tang len nhng cong suat canh khuaycung tang len do sc can khuay tang.Neu lc ly tam nho (Re < 300) th chuan so Fr cha ang ke (gan bang sokhong)va cong suat khuay trong trng hp co tam chan va khong co tamchan la nh nhau, xoay loc cha xuat hien.

chuan so Re cao trong bnh khong co tam chan ngi ta gop anh hngcua chuan so Fr vao chuan so cong suat qua nh ngha cua chuan so congsuat hieu chnh:

mFr

NpNp * (7)

Luy tha m tuy thuoc hnh dang cua canh khuay va cua he thong


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ma

b

log(Re)(8)

Trong o: a,b la cac hang so phu thuoc hnh dang canh khuay va cac tha sohnh dang.

oi vi chong chong 3 canh bc 2 co H/Dt = 3,3 va Z/d = 1 th a = 1,7

va b = 18,0.Mot cach tong quat, ta co :

20 ReRe, FrCFrfNp N (9)

Trong o : CN, 1, 2, la cac hang so phu thuoc che o khuay.Neu lu chat khuay co che o chay :Chay tang : 1 = -1, 2 = 0 khi nay P0 = CNRe

-1.Chay roi co tam can : 1 = 0, 2 = 0 khi nay P0 = CN .

Chay roi khong co tam can : 1 = 0, 2 =a

b

log(Re), tr lai trng hp

tren.

II.4 Nguyen tac khuech ai ong dang:Hai he thong c goi la ong dang hoan toan khi chung thoa man ongthi :ong dang hnh hoc.ong dang ong hoc.ong dang ong lc hoc.

Mo hnh ong dang hoan toan oi hoi tat ca cac chuan so vo th nguyentng ng bang nhau.Khi can thiet ke mot he thong khuay ln cho cong nghiep, ngi ta thngtao mot mo hnh nho roi o thc nghiem gian o cong suat cua mo hnhnay. V co ong dang hnh hoc gia hai he thong nho va ln nen gian o

ap c cho ca haiva co the dung e tien oan cong suat cung nh cngo khuay trong nha may: ay la nguyen tac khuech ai ong dang.Trong thc te, nhieu khi rat kho thc hien mo hnh ong dang hoan toan,neu hai he thong ln nho gan ong dang nhng co vai d biet th ta co thedung he so hieu chnh thc nghiem.Tuy nhien bang thc nghiem ngi ta nhan thay : (Re)fNp . Co 3 phng

phap xac nh chuan so cong suat NpXac nh Np theo phng phap giai tch :Xac nh Np theo phng trnh chuan so :

m

p CN Re. , cac gia tr

C & m c xac nh qua cac bang tra.

Xac nh Np theo o th (dung gian o cong suat).I I .5. Tien oan cong suat trong cac he thong thc:

Khi can thiet ke mot he thong khuay tron trong cong nghiep, ngi ta taomot mo hnh mau nho roi xay dng gian o chuan so cong suat cho mohnh nay. Mo hnh mau phai ong dang vi mo hnh thc te. V s ongdang nay ma mo hnh ln co the dung chung gian o cua mo hnh mau.T o ta co the tien oan cong suat thc can thiet.


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III. THIET B TH NGHIEM:I I I .1. Dung cu:

2 bnh cha dau va nht 2 canh khuay turbine CT2, CT3 & 1 canh khuay chan vt CP2.

1 truc gan canh khuay. 1 bo tam chan 4 tam. 1 ong c ma lc co the thay oi van toc 01200v/ph bang hop so. 1 lc ke lo xo co thang o 02lbf. 1 van toc ke co 3 thang o ( 0- 300; 0- 600; 0 1200v/ph).

I I I .2. S oth iet b thngh iem:

IV. PHNG PHAP TH NGHIEM:I V.1 Phng phap o:

Cong suat khuay: Khi canh khuay quay, lc ma sat truyen len canh khuay va lam cho ongc quay tren o bi. Ta gan lo xo lc ke vao ong c e ham no lai, oc so

o tren lc ke. So o nay chnh la o ln cua lc ma sat F gia chat long

va canh khuay.

Cong sinh ra khi iem at lo xo chuyen ong tng oi mot khoang ds:

FdsdA

Khi chyen ong tron mot vong:

rFFdsA

r

2

2

0

Vi r la khoang cach t v tr gan lo xo en truc ong c. Trong he thong

th nghiem nay, r = 5 inch.


7/17



ong c

Lc ke

ds

Hnh 2: S o cai o lc ma sat.

TAP vi

NT 1 la thi gian ong c quay het mot vong.

Nh vay:

FrNP 2

Van toc khuay N:oc tren van toc ke theo n v vong/phut ( rpm ).

I V.2 Cach ti en hanh:Th nghiem c thc hien vi 2 chat long la nht va dau. oi vi nht,

tien hanh lan lt vi ca 3 canh khuay, vi dau ch dung canh khuay CT2.

ng vi moi canh khuay phai o 2 che o: co va khong co tam chan.Van toc khuay thay oi t 100 en 1100 vong/phut. Vi nht co the chon

van toc 200, 400, 600, 800, 1000. Vi dau nen e 50, 400, 700, 900, 1100. Cu

the nh sau:

au tien, kiem tra dung cu va cac thiet b th nghiem.

Lap canh khuay vao he thong (khi lap can chu y khong e ri xuong

lam v bnh).

Lap tam chan neu la che o co tam chan ( chu y va cham lam be bnh

).

Chnh lc ke lo xo ve 0. Bat ong c (dung tay gi ong c e cho lc ban au khong lam ong c

xoay manh se gay ra va cham lam h may).

Chnh hop so van toc en mc can thiet.


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Khi ong c quay, lc ma sat truyen len canh khuay lam cho ong c quay

tren o bi. Ta gan lo xo lc ke vao ong c e ham no lai va oc so o

tren lc ke.

Dung tay gi ong c, thao lo xo lc ke ra, tiep tuc thay oi van toc bang

hop so, moc lo xo lc ke vao va oc so o mi.

Cac chu y khi lam thnghiem:

Khong cho may chay qua 1100vong/phut, may se rung, nguy hiem. Khi oc van toc luon th e van toc thang 0 1200 rpm trc. Neu

thay cha u chnh xac th mi giam xuong thang o nho hn. Tranh e kimch nhay qua mc toi a cua thang o.

Mo khi bat tat ong c hay thay oi van toc khuay, phai dung tay giong c e cho lc ban au khong lam cho ong c xoay manh se gay vacham va lam h may.

Khi thao lap canh khuay, truc khuay va tam chan phai can than etranh lam ri xuong ay bnh lam v bnh cha.

Trc khi dung lc ke phai chnh ve 0 (khi ong c khong hoat ong). Khi quay hop so e chnh van toc, phai thao ri lo xo ra khoi ong c. Khi muon tat may phai chnh van toc ve 0 trc roi mi tat may.

V. PHUC TRNH:V.1. Ket qua thnghiem:

V.1.1 Nht:

r dCT2 dCT3 dCP2 pn n D

0.127 0.075 0.065 0.080 825.150 0.091 0.245

Nht CT2

N N Re Thanh trn Co tam chan G


9/17



(v/ph) (v/s)F (lbf) F (N)

P(W)

NPF

(lbf)F (N)

P(W)

NPch

200.000 3.333 170.223 0.010 0.044 0.118 1.631 0.010 0.044 0.118 1.631400.000 6.667 340.446 0.030 0.133 0.710 1.224 0.020 0.089 0.473 0.816600.000 10.000 510.669 0.060 0.267 2.130 1.088 0.060 0.267 2.130 1.088

800.000 13.333 680.892 0.090 0.400 4.259 0.918 0.080 0.356 3.786 0.8161000.000 16.667 851.115 0.120 0.534 7.099 0.783 0.120 0.534 7.099 0.783

Nht CT3

N(v/ph)

N (v/s) ReThanh trn Co tam chan G

chF (lbf) F (N) P (W) NP

F(lbf)

F(N)

P(W)

NP

200.000 3.333 127.856 0.000 0.000 0.000 0.000 0.010 0.044 0.118 3.337400.000 6.667 255.713 0.010 0.044 0.237 0.834 0.020 0.089 0.473 1.668600.000 10.000 383.569 0.040 0.178 1.420 1.483 0.030 0.133 1.065 1.112800.000 13.333 511.425 0.060 0.267 2.839 1.251 0.060 0.267 2.839 1.251

1000.000 16.667 639.282 0.080 0.356 4.732 1.068 0.070 0.311 4.141 0.934

Nht CP2

N(v/ph)

N(v/s)

ReThanh trn Co tam chan G

chF(lbf)

F(N)

P (W) NPF

(lbf)F

(N)P

(W)NP

200.000 3.333 193.676 0.010 0.044 0.118 1.181 0.000 0.000 0.000 0.000400.000 6.667 387.352 0.020 0.089 0.473 0.591 0.010 0.044 0.237 0.295

600.000 10.000 581.028 0.040 0.178 1.420 0.525 0.040 0.178 1.420 0.525800.000 13.333 774.703 0.050 0.222 2.366 0.369 0.050 0.222 2.366 0.369900.000 15.000 871.541 0.060 0.267 3.194 0.350 0.060 0.267 3.194 0.350


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0.000

0.200

0.400

0.600

0.800

1.000

1.200

1.400

1.600

1.800

0.000 100.000 200.000 300.000 400.000 500.000 600.000 700.000 800.000 900.000

NP

RE

th 1: Nht - CT2Thnh trn C tm chn

0.000

0.500

1.000

1.500

2.000

2.500

3.000

3.500

4.000

0.000 100.000 200.000 300.000 400.000 500.000 600.000 700.000 800.000 900.000

NP

RE

th 2: Nht - CT3

Thnh trn C tm chn


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V.1.2 Dau:

r dCT2 pd d D0.127 0.075 811.750 0.058 0.280

Dau CT2

N(v/ph)

N (v/s) ReThnh trn C tm chn Ghi

chuF(lbf)

F(N)

P(W)

NPF

(lbf)F

(N)P

(W)NP

50.000 0.833 65.786 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

400.000 6.667 526.290 0.000 0.000 0.000 0.000 0.030 0.133 0.710 1.244

700.000 11.667 921.008 0.050 0.222 2.070 0.677 0.080 0.356 3.313 1.083

900.000 15.000 1184.153 0.070 0.311 3.727 0.573 0.100 0.445 5.324 0.819

1100.000 18.333 1447.298 0.090 0.400 5.856 0.493 0.140 0.623 9.110 0.767

0.000

0.200

0.400

0.600

0.800

1.000

1.200

1.400

0.000 100.000 200.000 300.000 400.000 500.000 600.000 700.000 800.000 900.000

NP

RE

th 3: Nht - Cp2Thnh trn C tm chn


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V.1.3 Xay dng gian oCong suat khuayVan toc khuay cho bon nht50m3ong dang bon nht thnghiem:

dCT3 pn n D1.070 825.150 0.091 4.050

CT3

N(v/ph)

N(V/s)

Re NpP

(W)Ghich

1.000 0.017 173.234 6.410 0.034

1.500 0.025 259.851 2.892 0.052

2.000 0.033 346.468 2.296 0.098

2.500 0.042 433.085 1.856 0.155

3.000 0.050 519.702 1.554 0.225

0.000

0.200

0.400

0.600

0.800

1.000

1.200

1.400

0.000 100.000 200.000 300.000 400.000 500.000 600.000 700.000 800.000 900.000

NP

RE

th 4: Du - CT2Thnh trn Series2


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VI. BAN LUAN:Cau 1:Nhan xet anh hng cua tam chan en cong suat khuay:

Tam chan se lam tang tr lc can tr dong chay xoay tron cua chatlong trong bon khuay. Lam tang lc ma sat cua dong chay. Khi khong co

0.000

0.050

0.100

0.150

0.200

0.250

0.000 0.005 0.010 0.015 0.020 0.025 0.030 0.035 0.040 0.045 0.050

P

N

th 5: Nht - CT3


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tam chan neu dung mot cong suat bang vi trng hp khong lap tamchan th do tr lc dong chay o, van toc khuay se at gia tr thap hn.

e am bao c van toc khuay can thiet, ta phai cung cap mot cong suatln hn trng hp khong lap tam chan.Tuy nhien, khi lap tam chan sengan can c s hnh thanh xoay pheu, lam tang hieu suat khuay, ben

canh o cong suat khuay cung tang do tr lc can cua tam chan len skhuay tang.Cau 2:Nhan xet stieu thunang lng cua tng loai canh khuay

Cung mot loai canh khuay trong cung ieu kien th nghiem ve cac thong sokhac, ng knh canh khuay cang ln th nang lng tieu thu cang ln.Khi o, nang lng tieu thu phu thuoc vao tiet dien vuong gocvi vantoc dai cua canh khuay. Tiet dien cang ln, lc can cua chat long lencanh khuay cang ln.

Nang lng tieu hao e thang lc can o cang ln.Lc can nay c bieu dien bi phng trnh cua Newton :

P Adv

dy . .

Trong o : P : Lc can (N). : He so nht ong lc hoc (N.s/m2). A : Tiet dien vuong goc vi van toc dong chay. dv/dy : Gradient van toc lu chat theo phng vuong goc dong chay.

Qua th nghiem, ta co the rut ra: Canh khuay CT2 tieu thu nang lng ln hn canh khuay CT3, the hien

cho cong suat khuay ln hn. V: canh khuay CT2 co ng knh 3inch, canh khuay CT3 co ng knh 2.5 inch nen dien tch be mat vuonggoc van toc dai canh khuay cua canh khuay CT3 ln hn.

Canh khuay CP2, tuy co ng knh bang vi canh khuay CT3, tuy nhiencau tao cua no co dang chong chong, phan tiet dien vuong goc vivan toc dai cua no be hn ca canh khuay CT3 v the no tieu thu nanglng thap nhat. Co mot iem can lu y la do cau tao nh chongchong, canh khuay CP2 se lam tang lc ay theo chieu truc, v vay nose tang cng khuay tron doc.

Cau 3:Tai sao lai chon khoang cach gia cac van toc trong trng hp khuaydau ln hn khuay nht:

Do o nht cua dau nho hn nhieu so vi nht, ch gan bang phan na. Vvay lc ma sat o c khi khuay dau se nho hn khi khuay nht. Neu laykhoang van toc khuay hai chat long giong nhau th khoang cach gia caclc o c khi khuay dau se nho dan en kho phan biet. V vay, khoangcach van toc cua th nghiem khuay dau phai ln hn th nghiem khuay nhte tang khoang cach cac lc ma sat o c e de oc gia tr tren lc ke.Tien hanh th nghiem, chon van toc vi nht 200, 400, 600, 800, va 1000 vidau 50, 400, 700, 900 va 1100.


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Cau 4: Trong trng hp nao th co xoay pheu ? Xoay pheu co li hay khong.Co nhng phng an nao lam mat xoay pheu ? Bemat cua xoay pheu lomxuong hay loi len? Tai sao?

Xoay pheu xuat hien khi lc ly tam u ln, van toc xoay cua dong lu chatln se tao ra mot trng lc can bang vi trong lc chat long lam cho be

mat phan chat long phan bo theo dang cong lom. Dang cong lom cua xoayc giai thch. Lc ly tam co xu hng em cac phan t chat long t tam ra ngoai.

en thanh bnh, chung b can lai va ong tai o. V vay mat o cacphan t chat long tam bnh se t hn ngoai thanh bnh v vay sexuat hien dang lom (do thieu chat long tam bnh khuay).

Canh khuay chan vt co tac dung tang cng khuay tron doc nen se t taoxoay pheu hn.

Thng th xoay pheu khong co li, v tren be mat chat long se xuat hiennhieu cho xoay ln va s chuyen ong cua chat long trong long oi khi bhan che do s mat mat nang lng nhieu va s tao bot trong khi khuay. Hn

na, xoay pheu hnh thanh va ton tai lam giam lc khuay tron ,oi khi conco tac dung ngc lai lam xuat hien kha nang phan li lam giam hieu quacua qua trnh khuay. Do vay thc te ngi ta thng tranh kha nang taoxoay pheu bang cac phng an sau: at lenh tam canh khuay vao be ( thung) khuay: at nghieng hay at

nam ngang Ghep thanh chan trong thung khuay: Ghep thanh chan thanh thung, dung

vong can, thanh roi dong, cac ong thang ng at trong thung, cac vongong

Tuy nhien, viec at lech tam canh khuay va ghep thanh chan trong thungchan se xuat hien them tr lc cuc bo va xuat hien vung tu => egiam thu vung tu ta phai tang van toc khuay tron.

Cau 5: Nhan xet mc o tin cay cua phng phap ong dang.Phan tch trnghp bon 50m

3 tren:

Theo nh phan ly thuyet, hai qua trnh c goi la ong dang phai thoa: ong dang hnh hoc. ong dang ong hoc. ong dang ong lc hoc.Mc o tin cay cua phng phap ong dang la co the chap nhan c trong

khi cha co mot mo hnh giai tch chnh xac e tnh toan cac he thong thc.Mo hnh ong dang hoan toan oi hoi tat ca cac chuan so vo th nguyentng ng bang nhau.Tuy nhien, khi ap dung mo hnh ong dang cua mo hnh th nghiem vao mohnh san xuat cong nghiep se kho tranh khoi nhng sai khac ve mot sothong so k thuat. V vay, e co the ap dung nhng nghien cu trong


16/17



phong th nghiem vao thc te thng ngi ta se them 1 hay 1 vai thong sohieu chnh.

Cau 6: Chuyen giao?Sau khi xay dng thanh cong bon cha 50m3, ieu au tien phai lam o lalam thc nghiem va lap nen gian o NPRe. Sau o oi chieu vi gian

o th nghiem l thuyet. T o xac nh cac he so hieu chnh. Sau khi alam xong nhng bc o, ta a co mot gian o hoan chnh va co thedung gian o o e tnh toan cho cac thiet b co dung tch ln hn da trengian o hoan chnh. Va gian o a lap c co the ap dung e thiet kecac thiet b cong nghiep va a vao san xuat theo qui mo cong nghiep.

VII. PHU LUCCac thong so can thiet:

ng knh bnh nht va dau lan lt : DN = 24.5 cm, Dd = 28 cm ng knh canh khuay: CT2 : d = 7.5 cm; CT3 : d = 6.5 cm; CP2 : d = 8.0 cm Khoi lng rieng cua nht va dau lan lt la:

3/15,852 mkgN ,

3/75,811 mkgd

o nht cua nht va dau lan lt la:

sPacP

sPacP

d

N

.058.084,51

.091.089,90

Chieu cao mc chat long: nht :HN = 23.5 cm; dau : Hd= 24.8cm Chieu cao mc chat long t ay bnh en canh khuay : ZN = 10 cm; Be day tam chan: mm3 , be ngang tam chan : b = 2.5 cm.

Tnh toan cac gia tr:

60

)/()/(

phvNsvN


17/17



448.4)()( lbfFNF

53dN

PNp

Red N2

NFrP ...2

Tnh toan trng hp bon nht thc te 50m3:

The tch bon nht th nghiem: 32

0.011074

mHD

VTN

T so ong dang hnh hoc: 53.163 TN

TT

V

Vl

Vi VTT = 50m3

ng knh bon nht thc te: lDDTT =4.05

- ng knh canh khuay thc te: m1.07445 lddTT - Chon gia tr N(v/s) sao cho gia tr Re (tnh theo dTT ) gia tr Re (tnh theo d)- T gian o NpRe cua canh khuay CT2 trng hp khuay nht, tra gia tr

Np cho trng hp thc te.

- Tnh cong suat khuay thc te: 53 TTTT dNpNP

VIII. TAI LIEU THAM KHAO[1].Tap the Tac gia bo mon May & Thiet bKhoa Cong nghe Hoa hoc & Dau

kh Trng ai hoc Bach khoa ai hoc Quoc gia Tp.Ho Ch Minh, Th nghiemQua trnh & Thiet b,9/2003.

[2]. Tap the tac gia, So tay Qua trnh & Thiet b Cong nghe Hoa chat tap1,Nha xuat ban Khoa hoc & Ky thuat Ha Noi,1992.[3].Nguyen van Lua, Qua trnh & Thiet b Cong nghe Hoa hoc & Thc pham

tap 1 Cac Qua trnh & Thiet b C hoc quyen 1- Khuay Lang Loc,NXB aihoc Quoc gia Tp. Ho Ch Minh, 2001.

Khuấy chat long

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