;^35
KHOA HQC - CONG NGH$
MOT SO KET QUA NGHIEN CCRJ, THIET KE, CHE TAO THIET B| SAY V(iN MONG
B A N G CONG NGHE "PHUT NHIET VA LA PHANG"
Nguyen Dmh Timg'. Dgng HOu Tiep^ .Nguyen Dinh Quy^ \ TOM TAT
Thiet bf say vdn mong op dyng cdng n^he "phut nhiet vd Id phdng" model jetpress-1380/2 da dugc nghiin cuu, thiit ke vd che tgo. Thiet bf nay cd nhieu uu diem chdng hgn kit cdu thiit bi khong f^uc tgp; tieu thu none lugng hgp ly; chdt lugng vdn mdng sau khi sdy rdt tdt, ddc biet Id vdn dugc "Id phdng" vd rdt mjn; van hdnh thiit bj dan gidn; diiu khien ty dgng: co thi chi tgo thiit bi sdy a qui md cdng nghiep di cung cdp cho cdc nhd may sdn xudt vdn mong trong cd nudc.
I D^T VAN DE
H i ^ nay nhieu nuitc trdn thi gidi dd chl tgo cdc logi thilt bj chuyen dyng siy vdn mdng (vdn bdc, vdn igng). Mgt so logi/kilu hinh cdng ngh$ siy van mdng da vd dang sd dyng trdn the gidi cd the ke nhu [ U ] :
- Cdng ngh? siy "con Idn" vdi kidu tde nhan say/gid mdng thoi dgc.
- Cdng nghd siy "con Idn" vdi kilu tdc nhan say/gid thoi ngang.
- Cdng ngh? siy "bdng Iudi".
- Cdng n ^ p say "sdng tan sd radio".
- Cdng n ^ d siy "trong quay dye Id".
- Cong ngh$ siy "phyt nhi^ va la phdng".
Trong khi do d nudc ta cong nghd say g l ndi chung vd cdng nghd say vdn mdng ndi ridng dang Id gdt chdn "asin" ciia ngdnh cdng nghidp chl biln go Vidt Nam. Vdi mye tieu n ^ i e n ciiu, thiet ke vd chl tgo dupc thiet bj siy chuyen dyng phu hpp nhit vdi dieu kidn tgi Vidt Nam, trinh dp cdng nghd tidn tiln tuong duang chau Au va Nhgt Ban, nhdm nghien ciru chiing tdi ^ quyet d{nh lya chpn phuang p h ^ cdng nghp siy vdn mdng "phyt nhiet va la phdng".
II. NOI DUNG VA PHirONG PHAP NGHIEN CtTU I. N9i dung nghien cuu
..^4A?
say.
'^Hoan thien cac bp phgn vd chi tilt thidt bj say nham dua ra mau may ddm bao chgy dn dinh vd tien lau.
2. Phinmg phap nghien ciru
s i y vdn mdng theo edng ngh$ "phyt nhi?t va la phdng" (jet vd press) cd cdng nghe nguon td chau Au, dupc hoan thi^n d Nhgt Ban va day la lan dau tidn nhdm nghien cuu chung tdi triln khai thyc hi^n tgi Vidt Nam, vi v§y gdp rit nhieu khd khan trong vi§c nghien ciru, thiet ke va che tgo cy thi. Phuang phdp chii ylu Id dua tren tmh todn ly thuyet, chl tgo md hinh thu nghidm, xac djnh cac thong so ky thugt vd sau do chl tgo mdu may ehinh thurc, vgn hdnh thir va hodn thi^n thiet bj cung nhu quy trinh cdng nghd say m$t so logi vdn mdng thdng dung.
HI. K^T QUA NGHIEN CtTU VA THAO LU^N 1. Nghidn cuu tinh toan tong the thiet bj siy van mong
I.I. Cas&tinh todn
- Thilt bi chuyen dyng siy vdn mdng ky hieu Jetpress-1380/2 cd nang suit sdy 3 ^ 3,5 mVca (tuong duong 2.700 -^ 3.150 mVnam, theo chl dg siy 3 ca/ngdy, 300 ngay/ndm).
- Da thi nghipm vdi cdc logi van Igng 0,3- Xin gidi thi?u tdm tdt mgt so npi dung chinh [-r 10,8mm vd van bdc l,2-2,0mm.
(sauT) ^
— • Tinh toan tong the ve thiet bj say (tinh toan ndng suat; tinh todn nhi^t, tinh todn khi d$ng, tieu hao ndng lupng).
- Thiet kd cac bp ph$n va chi tiet ciia thiet bj.
' Vifn Nghien cim thiit Vk chi 190 m^ N^g nghi^.
' CAng ty CP thirong m^i c6ng nijii^p vk chi biin gS.
- Dp im ban dau cua van mdng: 80%.
- E)p im cuoi cua van mdng sau khi say: 8- 12%.
- Chiing loai go van mdng dem say: go trong nudc (trdm, vgng, bd de, keo); go nhgp khau (xoan ddo, de, soi, tan bi, thdng).
7 7 1 7
TAP CHi CONG NGHliP NONG THON - SO 6 - 2012KHOA HQC - CONG NGH|;
- Thiet bj siy van mdng Jetpress-1380/2 vdi hp thong eon Idn cd chilu i^ng Id 1.380mm, kit ciu may gom 2 ting.
- Sir dyng chat tan nhift Id hoi nudc bao hoa dp suit 5 kg/cm^.
- Ap dyng cdng ngh? "phyt nhidt va Id phdng"
(Jet va Press).
1.2. Ngityin ly hogt d^ng
Thilt bj ehuydn dyng siy vdn mdng Jetpress- 1380/2 tbi hidn trdn hinh 1, hogt dgng theo nguyen ly sau ddy:
- Van mdng di chuyin bdng h$ thong con lan chii dpng phia dudi vd con Ian "la phdng" d phia trdn.
- H$ thing phyt nhi^t Id phyt gid ndng tryc tilp vudng gdc Idn la go t\i khodng edch SO ^ 60 mm vdi tie dp 6 -5- 8mm/gidy tgo ndn hi?u ung "impact", vi vgy toe dp thoat am tii la go nhanh gap 4 Ian so vdi cdng ngh^ siy bdng con Idn thdng thudng vdi tac nhan say id gid nong thoi dgc hode thoi ngang.
- Hoi am trong buong say dupc h$ thong qugt ly tdm hut ra ngodi.
- Diem khac bi^t cua cdng ngh^ ndy Id trong qud trinh siy vdn mdng dupc "Id phdng" bdng h$
thong con Idn ndng tren va dudi, dgc b i ^ h$ thdng
"con Idn tren" co tdc dyng "milt" vd "la phdng" van mdng trong qua trinh di chuyin. Dieu nay cd tac dyng rat Idn din dp phdng mjn eiia vdn mdng sau khi siy md cdc logi hinh cdng ngh^ khac khdng thi ed dupc.
tren mdy mo hinh ti'nh cho 2 trudng hpp, kit qud d bang sau:
Hinh 1. Ngi^en ly hogt dgng cua thiet bf sdy vdn mdng Jetpress-! 380/2
V- Con lin; D- Vin mfing; R- Xfch; T- HOp phyt nhi^t (phvt gifi);
]• Giiiu djch ^uyin \6a in6ng; 2- Chiiu ddng tic nhin s ^ .
1.3. Kit qud tinh todn
l.S.l.Tinh ndng sudt mdy sdy JETPRESSO- 1380/2.
Mdy say sd dupc phdn tich vd ti'nh toan ndng suit quy chuin trong 1 gid, trdn ca sd thyc nghidm TAP CHf CdNG NGHI$P NONG THdN - SO 6
Thdng s6 Dp am han
d i u W i ,
(%)
Dd am cudi W2.(%) Thdi gian
s i y t s , (phdt) T6c dp di chuyin ciia vdnVvLs,
(m/phut) H^ so xep
dayK Chieu rgng xIp g l s i y ,
(mm) Khdi lupng ridng ciia gd Trdm, Vgng (kg/m')
Van lang d^v 0,6mm
80
8 1,5
5
0,8 1.250
420
Vanboc day 1,2mm
80
8 2
2
0,9 1.250
420
- s i y vdn Igng ddy 0,6mm:
2 tang X 60 phut x 5 m/phut x 1,25m x 0,8 = 600m=
Tinh quy doi tuang duong 0,36m', ijmg vdi trpng Iupng Gi= 151kg.
^ a y vdn bdc ddy 1,2mm:
2 ting X 60 phiit x 2 m/phiit x 1,25m x 0,9 = TlQm^
Tinh quy doi tuang duong 0,324m', ling vdi trgng lupng Gi= 140kg.
1.3.2. Tinh cong suat nhi§t mdy say JETPRESS 1380/2
May say JETPRESS-1380/2 sd dyng hai nudc bao hda vdi dp suit vgn hdnh Id Pvh = 5kG/cm^, ung vdi dp suit nay ta cd nhi^t dp 151,84''C.
De tinh eong suat nhi$t, chiing ta cd the tinh theo mgt trong so phuang phdp sau day: Theo [1,2]
cho thiy, d l lam bay hoi 1 kg am tu gd Igng, go bdc cin mgt Iupng hai nudc tir 1,5-2,0 kg (dp lyc hai trong khodng 5 - 8 KG/cm^), d day chiing ta chpn 2,0 kg hai nudc cho 1 kg am bay hai.
Do dd, tinh dupc Iupng am bay hai tii van mdng trong Igid cho hai logi van do! vdi mpt ting cua mdy:
- Tnrdng hgp sdy vdn Igng ddy 0.6mm:
2012 17
KHOA HQC - C 6 N G NGHE
' 1 0 0 - (I)
Trong dd:
(Oi: Lupng im boc hai trong 1 gid (kg), G^: Khdi Iupng van Igng can say (trudc kht say) trong 1 gid (kg),
W|: Dp am ban dau cua vdn Igng (%), W2: Dp am cudi cua van lang sau khi say (%).
Thay sd vao phuang trinh (1) ta cd:
i)
'100-w. ^ = 151 8 0 -
100-- = U8ig/A - Trudng App sdy van bdc day 1,2 mm:
Tuong tu thay so vao phuong trinh (1) ta c6:
G / ^ I - ^ * ' : =i40^^^^=mkg/h ' M o O - W j 1 0 0 - 8
D I an toan cho mdy, khi tinh todn chdng ta chpn trudng hpp cin dg am bic hai nhieu hon: 118 kg am/h cho mpt tang ciia mdy siy.
Nhu vgy Iupng hoi nudc cin cung cip cho mdy siy JETPRESS-1380/2 (cho cd hai tang) Id:
1181^/h/tang x 2 tang = 236 kg hai nudc/h.
Cdn L6 vdo feet qud tinh toan Iupng hoi nudc bay hai ttong qud y j n h j i y j ^ ' l a m ca sd lya chgn
~nonidi"cho hpp ly. Theo Y^t qua tmh todn ttdn ddy cho thay, chpn noi hai cd cdng suit 300 kg hoi/h la hpp ly va kinh te.
1.3.3. Tinh todn calorifer,
Tinh todn calorifer bao gdm tmh toan cdng suit nhi^t vd di?n tich be m§t trao doi nhift. Theo thilt kl, thiet hi say cd 2 ting, mdi tang dupc bo hi 4 block calorifer (tong s l 8 block calorifer), kit ciu ciia calorifer dupc ti'nh todn thidt kd nhu tten hinh 2.
Dya tt^n tdi lidu [3-5], ca sd tinh toan d mye 1.1 chiing ta ti'nh dupc cac thdng so ky thugt chinh ciia mpt block (mgt gidn) calorifer nhu sau:
- Cdng suit nhi?t ciia 1 block calorifeja:
Q' = 62.183,7kJ/h (« 14.861,6 Kcal/h), hay «17,3 kWu,.
- Didn tich trao doi nhipt ciia 1 block calorife Id: A = 19,48ml
- Kich thude 1 bp colbrifen 780x780x220mm.
- Dudng kinh ong hai vao 32 mm, dudng kinh
Ing ngung (hoi ra) 32 mm. {,
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Hinh 2. Hmh ve kit qud tinh todn thiet ki gidn trao doi nhift Calorifer
1.3.4. Tinh todn qugt gid
Thiet bj siy van mdng model jetpress-1380/2 dupc bo tri 8 quat gid ly tam dat trdn 2 ting ciia thilt bj say, quat dimg cho logi may say nay cin cd dp suat khdng Idn, nhung phdi c6 Iuu lupng Idn, do vgy ma ket cau ciia guong cdnh khdng nhu nhihig logi qugt thdng thudng, md d day phdi ed dgng d$c thii nhu dgng cdnh ciia turbin, vd protin ciia mdp bidn cdnh phdi la ducmg cong chuyen tilp deu trong khdng gian. Cac thdng so k^ thugt chinh ciia qugt thii gid ndng nhu sau: Iuu lupng Q = 8000 mVgid;
dp lyc p = 102nunH2O; cdng suit dpng co di^n cho mpt qugt Pdc = 2,2 kW/lqugt. Ngoai ra dupc b l tri 2 qugt hiit khdng khi im vdi Iuu Iupng 3.000 mVgid mdi qugt d$t d trdn ndc thilt bj siy tgi vj tri phii hpp nhdm tdng hi$u qua thai khi am.
7.5.5. Tdm luge mo Hinh tinh todn cdn bdng ndng lugng nhi^t cua qud trinh sdy tren mdy tinh
TrenJ^inh 3 md ta so d l khoi hd thing cap nhi^ vd thodt am cua may say van mdng hai ting, oan cu vdo so dd ndy Idrnxo-ed^dl thiet Igp md hinh can bdng ndng Iupng nhif t cua h^ thong siy.
18 TAP CHf CONG NGHIEP NONG THON - SO 6 - 2012
KHOA HQC - CONG NGHE
(3T>^
Hinh 3/^ do khdi hf thdng cdp nhift vd thodt dm cua mdy sdy vdn mdng hai tdng jetpress - 1380/2 1- N6i hoi; 2- Dte Iiao ddi nhi^ (Calorifer); 3- Khdng khf s^h di v ^ (di qua£alorifer); 4- D i ^ g 6ng dSn hoi ndng vjko calorifer; 5- Qu^t sly; 6- Dirimg 6ng thoit nudc ngung; 7- D6ng tic nhSn siy vio kenh "phgt nhi^t"; 8- Kfinh "phyt nlii§t"; 9- Tic nhfinsiy; IQ-Ranhphttjjnhigt; U-Ddnghcrilm thoitra; 12>Qu9t hiit hoi §m.
X ^
Md hinh edn bdng ndng Iupng cho h? thong say dupc thiet I§p dya trdn phin mlm [3] hd trp „Alle Bertsch-Wasserdampffunktionen Nach Iapws-If97", kit hpp vdi Macro-Excel, sa d l vd kit qud tinh todn dupc thd hidn trdn hinh 4.
iHM [Iir(rna niTl<i9o Calortferl M i n n i e 10 hoi vdo Caloriren nH !ip suit hoi vilo Calohfet]
Kl (Enlanpy hai via Calaiirei) IM (CQng suit nniltvdaCalatKeil
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w(nhlttaeMi[t> Calorifer)
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m'tHH Rirong hoi ta Calortfer] |kgl9|
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•hiM (Entanpytiol ra CalottlBr} IKJfhg.K]
O'lM (CBnn s u i l nhtei ra CalorlTaO (kWM j
•n'mi (K'Vng klilvjo Calorttaq Itajfe]
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Hinh 4. Sa dd vd kit qud cdn bdng nSng lugng cho hi thdng sdy cd sy ho trg cua phdn mem mdy tinh [2]
Didn gidi cac phuang trinh can bdng ndng lupng ciia mo hinh ^ » o nhu stf-d^-hinh 3 & 4 trdn day nhu sau [4-7]: eu~iX
- Cdng suit nhi^t cua hoi ndng tijr nii hoi di vdo t»n trao doi nhi^t Calorifer: ^V)
Q\miy<«> = f^HoriK'K) (2) Thay so vao ta cd:
236.(2.748,1-640,2) = 497.496,7 kJ/h hay 138,2 kWth
- Cong suit nhi^t ciia hoi ndng thai tir dan trao doi nhi^t Calorifer ra ngoai (vdo buong siy): XV )
Q'lHo. = ^Hoiiu.-ih -K) (3) TAP CHf CONG NGHIEP NdNG THON - S6' 6 - 2012 19
KHOA HQC - CONG N G H f
3>y Thay s6 vao ta Co: 7538 kWa,
- C6ng suit nhiet cua khdng khi (khi lanh) trudc khi vao Calorifer dc difuc hain ndng:
e'ira, = ""ii*, -AA«, = mja, -Cf -ft* " 'i» ) W Thay so vao ta co: 3,88 kWa,
- Cong suat nhiet ciia khong khi dS dugc lam nong sau khi qua d ^ trao doi nhi?t Calorifer
fi'im, = '"2M, -AAtt, = mia, .c, .(/„ - (,i ) (5) Thay so vao ta cd: 75,38 (kW/h)
- Cdng suat nhiet tieu thu cua mdy say (bao gom ca hai tang):
Thay s i vao ta cd: 75^8 kWi, Trong dd:
sis, d^t iv' ^ ^ " * ° ° " 8 ^^ • * ' ' ' ''^'' ""^ '''"'' ' * " " ' ^ ^'^' ^^^^
QHOOHO, " ^ ^ " 8 s " ^ "^^^ ^^ ' ^ ^ y ^^ nudc, (kJ/s) fi/ralra " ^°°i ^ " ^ ' ' * ' ^ ' ' ^ ^ ' * " ' ' ' ' ' ^ " ' ^ ^ ' ^ ^ 2r».u«in«i) - Cong suat nhiet thai ra moi ttudng, (kJ/s)
QH«^. = f^' -Vh^ + "^p.. (^2 - A ) ) . (W/s) (7)
»•• = m|,^,.(1 - ( 1 - w O ' O - W i M - L u g m g nudc hoc hoi, (kg/s) (8)
" i w ) =m;|^,.(l->V2)/(l-w,)-Luongv9t]ieutiudckhis«y,(kg/s) (9) Vdi m],^,, mi(^, Lugng vjt li?u trudc va sau khi sSy, (kg/s).
e ; « , „ , . ^ , = ^ . « , ^ -"K^^iCez - e , ) . (kJ/s) (10) '•V«i,»»2.83 [6] ,(kJkg-'K-') (11) fir„n..<.^,/e..a.^ = " ; ( " = l - 5 - l i ? s 6 t h u c n g h i a m [ 3 ] ) ,(%) (12)
Lupng khdng khi siy:
V =^s,D.^lic,{t,-tJ,,(m%) (13) Tieu thy ndng Iupng ridng:
7.5.6. A'Sng lugng di?n tieu thy thi nghi?m. M§t khac cd tdc dyng duy tri sy on djnh Cdng suit dipn cua thilt bj Id 24,5 kW. Ndng nhidt cua tdc nhan sdy trong qua trinh Idm khd (qua Iupng di?n tieu thu trong mpt ca 8h ta 196 kWh. trinh siy) vdn mdng tiieo ydu ciu cdng nghd, hinh 5 Mdi ca trung binh siy dupe 5.800 m^ van mdng, dudi day mo td so do khoi ve nguyen ly mgch di?n nhu v§y 1 m^ vdn mdng sdy tieu ton 0,033kWh. So dilu khiln dii vdi "mpt tang" cua h? thong siy vdn
^
^ l sdnh vdi cdc logi hinh cdng ngh? siy khdc cho thdy, mdng:' phuang dn cdng ngh$ siy "phyt nhi?t va la phdng" Nguyen I^ hogt dpng vd vai trd cua h? thong
• tidu ton it ndng lupng di^n nhit. di?n dieu khiln ddi vdi mdy say vdn mdng sit dyng 1.3.7. Diiu khiin qud trinh sdy hoi nudc bao hda ldm tdc nhdn "ra nhi^t" nhu sau:
H^ thdng di$n dieu khiln cd vai trd quan trpng Vdn mdng dua vao buong say nhd dan bdng tai u f / gdp phan trong v i ^ tgo nen chat lupng hogt dgng con Ian dupc ddn ddng bdng tmyen dpng xich dai ciia h? thing, vdi mye dieh dieu khiln vd duy tri cac 8m, vat Ii?u say dupc din hudng vd dut^ djnh vj ti^g thai ky thugt can thiet trudc va trong qud trinh bdng cac "thanh rau hinh Iudi biia''. Dp khd ciia van TAP CHl CONG NGHIEP NONG THON - SO 6 - 2012
KHOA HQC - C 6 N G NGHE
Hii}
mdng ( t ^ theo dp day cua vgt li$u say) phy thupe tdc nhdn siy cip vao buong sdy.
vdo toe dp chgy cita ddn bdng tdi con Idn vd nhi^t dp
Bf n o d& nhip 1CNI-f4
Hinh 5. Sa do khoi mgch dien dieu khien cho mgt tdng cua mdy sdy vdn mdng Nguin nhi^t d l cip vdo buong siy dupc liy tit
noi hai qua d4s talorifer hay cdn ggi la bp trao doi nhi$t (TDN), ung vdi moi mpt bg TDN se gdn vdi mpt qugt hut gid ndng (qugt say)J^hlnh 6. Doi vdi may siy nay cd hai tang, d moi tang cd 04 bg TDN (TDNH4), tuong img co 04 qugt say (Q1-K34). Hoi nudc dupc lay tii not hai qua van dieu tiet VI (hinh 5), sau dd qua cac bp trao doi nhidt TDNl-^4 va dupc qugt say Q1-K34 hut gid Ignh di qua bp TDN, sau dd diy khdng khi ndng vao buong say de lam khd vdn mdng (hinh 3 & 5).
Hinh 6. Sa do nguyen ly khi dgng dia h? thdng mdy sdy
"phun xg nhipt" Jetpress-1380/2 1- Calorofer; 2- Qu^it gi6; 3- Bu6ng siy; 4- H6i luu khi ndng; S- Ong xa khf km
Hoi nudc ngung ty d bg trao doi nhi?t 'IDNR4 dupc xd qua van V3 (hinh 5), khong khi am thodt ra tir vdn mdng dupc qugt xd dm hut ra khdi buong siy (hinh 3). Ndng suit say ciia tiing logi vdn cd dg day khdc nhau dd dupc djnh sin theo cdng ngh?. Toe dp say (vgn toe ciia djch chuyin) cua tiing loai van se dupc dieu chinh bdng biln tan mpt each de dang.
TAP CHf CONG NGHIEP NONG THON • SO 6
Duy nhat ed nhidt dp tac nhan siy la bj thay doi lien tyc ttong qud trinh Idm khd vdn mdng vi trong budng siy van mdng thu nhift de thai im, qugt xa khi dm ra ngoai va dp suit hai nudc cap td noi hoi cd khi eiing bj hg thap ndn nhi$t dg hoi nudc cap vao buong say cung thap di. Vi vgy de on djnh nhi^t dg buong say phdt lien tyc bu them Iuu lupng hoi nude khi ma nhi^t dp buong say ha xuong bang cdeh lap them d phan dau vdo cap hoi nudc mpt nhdnh phy vd dupc dieu khien bdng van di$n tti V2 (hinh 5). Van di$n tir V2 se dupe dieu khien ty dpng ddng md d l bit nhi^t nhd bp cdm biln nht^ dg (dau do can nhi$t ciia bg cam biln dupc ddt phia trong buong siy).
Khi bit diu siy, nhi|t dp tdc nhdn siy (nhi|t dp buong say) chua bdng nhipt dp cdi ddt theo yeu cau cong ngh? doi vdi timg logi van mdng (vat li?u sdy).
Luc ndy van VI dupc md de cap hoi nudc vao bp trao doi nhiet ding thdi van didn td V2 cung dupc md song song vdi van VI. Khi nhi$t dp trong buong siy dgt khoang 95% nhidt dp cai djt theo cdng ngb?
thi khoa bdt van VI. Nhi^t dp trong buong siy dgt den nhidt dp cai ddt thi van didn tOr V2 sd ty dgng ddng Igi khdng cip hoi nudc cho bg trao dii nhift nifa. Trong qud ttinh say khi nhi$t dp trong budng say giam thi dau cdm bien nhi?t dp se dua tin hi^u dieu khiln van di|n tir V2 thdng qua cap tilp diem (5-7) ciia bp dieu khien nhiet dp (hmh 5) d l cap them hoi nudc vao bp trao doi nhipt.
2012 21
K H O A H O C - C O N G NGH$
Nhidt dp cdi ddt d bp didu khiln nhiet d l lam khd van mdng phy thugc vao dp day ciia tdng loai van (theo yeu cau cdng ngjid).
1.3.8. Kich thude thiit bi say
TTiilt bj siy vdn mdng j e t p r ^ 1380/2. budng siy chinh cd kich thuoc dai x rpng x cao: 8450 x 2430x2800 (mm).
Ngodi ra>di kem thiet bi siy cdn cd 2 dan nap va thdo li^u ak dua van mdng vao may vd liy van ra sau khi say xong.
2. Thiet k l va che tao tbilt bi say Tren hinh 7 sau day didn ta h? thong may siy van mdng theo phuong phdp "phjm nhi^-ld phdng;"
jetpress-1380/2 dupc tinh toan thidt kd hpp ly vl bd tri khong gian cung nhu lap ddt cdc thilt bi di kem.
Thilt bj say van mdng chuyen dyng Jetpress-1380/2 dupc chl tgo vd ldp ghdp vdi nhau theo dgng
"block, tam budng ghdp" tai W?n ^i^ien cdu thidt kl chl tgo may <H6ng nghi?p-RL\M (Bp Cdng
"Thuong) vdi edc phy tiing vd linh ki?n dd thay thi, dilu kidn siia chiia, bdo duong rit thugn lpi; ddy la im thi Idn so vdi cac thilt bj nhgp ngogi. Thilt bj da dupc ldp rdp hodn chinhjshuJn bj cho cdng dogn chgy thir nghifm (hii^J^
^ e p hoan chinh. Vdi mlu may ndy cd thi img dyng dl siy cho mpt sd logi van boc, vdn Igng cd chilu day tii 0,4 din l,2mni, mdy cd nhirng uu diem chinh nhu: ket ciu thidt bj khong phuc tap; tidu thy ndng luong hpp ty, phuong phdp nay se cho chat lupng van mdng sau khi say rdt ^ t , bdi ddng tac nhan say dupc phun tryc tilp Ien bl mdt ciia vdn tii cd hai phia trdn vd dudi, dac bi^t Id trong qua trinh siy vdn mdng dupc "la phdng" nen bd mdt rit mjn; vgn hanh thiet bi don gian; cd thd didu khien ty dpng; mau may ndy hoan toan co thd che tgo d quy md cdng nghiep de cung edp cho cac nhd mdy san xuat vdn mong (vdn bdc, van Igng) trong ca nudc.
Hmh 8. Thiit bf s^ vdn mong theo cdng nghi '.!pf^'~
nhiet vd Id phdng" Jetpress-1380/2 dugc chi tgo tgi Viin P^hien ciru thiit ki chi tgo may ndng nghiip (RIAM).
T A I L I $ U T H A M KHAO
[1]. Pavel jim. Prisucka dreva'rskeho puenuplu (S6 tay c6ng n ^ ? p g6). NXB SNTL. 1973
P ] . Alois kolarik, drevapsks prinicka, Nakladatelstv.
Techiaickey literatury.j^raha, 1973.
p ] . JXlle Bertsch-Wasserdampffunktionen Nach lapws- If97", 2009
[4]. Krischer/KrOil. Trocknungstcchnik, Band 1. Die wissenschaftliclicn Gmndlagcn der Trocknungstechnik, Springcr-Verlag Berlin, 1956.
[5]. Krischer/KrOil. Trocknungstechnik, Band 2: Trockner und TrocknungsvCTfehren, Springcr-Verlag Berlin, 1959.
[6]. Janik, W. Handbucb der Holztmcknung, 2., verbesserte Auflage, Fachbut^verlag Leipzig 196S.
17]. Peter von Bocckh, "Ilioinas Wetzel.
Waenneuebertragung, Grundlagen und Praxis, 4-Auflage, Springer-Vcrlag Beriin Heidelberg, 2011.
•v^
Hinh 7. Kit qud tinh todn thiit ki thiit bf sdy vdn mdng tren mov tinh
IV. KET LUAN
Nhu vgy mdu hd thong siy van mdng theo phuong phdp "phun nhipt-Ia phdng" Jet-press- 1380/2 sir dyng chat tdi nht^t Id hai nudc thdng qua dan trao dii nhipt Calorifer da dupc che tao va Idp^J
SOME RESULT^ ON RESEACH, DESIGN AND MANUFACTURE OF THE VENEER DRYING EQUIPMENT WITH TECTOJOLPOY "JET & PRESS"
Nguyen Dinh Timg. Dang Huu Tiep .Nguyen Dinh Quy 'SUMMARY
Veneers drying equipment fqiplied technology "jet & press" model jetpress-1380/2 was sttjdyed, designed and manufactured. The equipment had »-serie-ef advantages such as: equipment's stmctures isifi complicated; energy consumption in rational; quality of veneer after drying is very good, especially during drying the venues is pressed to get very plat and smooth; simple operation; autom^eaUji^control; the veneer drying equipment may be to be manutactured with industrial scale tfiat supplying^factories^roducing veneer
in all country. ^ Ngujriphanbifn: TS.fioanXrunThiD
22 TAP CHI CONG NGHIEP NONG T H 6 N - SO 6 - 2012
