Chao mOng 91 nam Ngay Bao chi C^ch mgng Viet Nam
/THIET B! BAO VE QUA NANG CUA HE THONG TRUC TAI GIENG BUfNG
Recently, for increasing the coal output, thecoalproducthn at the deeper level has been rapidly developed, as a result.
It is necessary to develop the coal mine with the vertical shafts. For ensuring the safety, not only the investment on the stand-by equipment, supervisory equipment and over speeding protection equipment of the hoisting engine, the selectkm of the over lift protection equipment for the hoisting equipment of the vertical shafts has been consklered very important
KS. TRAN NGO HUAN ThS. VO BiNH MANH ThS. BOAN NGOC CANH Viin Khoa hoc Cdng nghi Md - Vinacomin
ThS. DAO TRQNG cuima Vu Khoa hoc vi Cdng nghi
Bd Cdng ThiKmg Biin tip: TS. Ta Ngr/c Hii
LSatvindi
Theo k l hoach phat triln nganh Than, san lupng khai thic lp thien se gilm, san lupng khai thic him Id ting. Trong dilu kien khai thic ngly cang xulng s l u nhu hipn nay, ddi hdi phai su dung cdng nghe khai thic gilng dung. Trudc dly, tai Viet Nam, duy nhlt cd md than Mdng Duo'ng su dung cdng n g h | ning. G i n dly, cdng nghe nly dupe I p dung tai md than H I Llm, sap tdi, tai c i c du I n khai thic than h i m Id cua c i c md: Nui Beo, Khe Chim ll-IV, Mao Khi, H I Ring.... do d o den vj thilt k l trong nude thuc hien.
Trong cdng nghe khai thic gilng dung, he thing thilt bi true t l i gilng dung ddng vai trd hit siic quan trpng. L I h$ thing v | n tai chinh cho toln md, do dd, c i c y l u c l u v l an t o l n clJa h | thing ddi hdi h i t sCrc chat che. Ngoli cic thilt bj du phdng, gilm sit, cdn cd c i c thilt bj an toln, trong dd, thilt bi bao v | q u i ning cDng h i t si>c quan trpng. Thilt bj nay dam b i o an toln cho h | thing tn,ic tai gilng dung khi xay ra su c l q u i ning cua thOng cDi.
2. Thilt bj b i o v# qua n i n g cua h$ thing trvc tai g i l n g dirng
Trong q u i trinh l l m vi|c cua he thing tnjc t l i gilng dung, cd t h i g|p sy c l d p ning klo thijng cQi l l n q u i v\ tri qui djnh theo thilt k l Su c l nly cd t h i d i n tdi thung cOi va cham vdi c i c k i t c l u kim loai, thilt bj khIc. Tilp sau dd, cd t h i xly ra dut d p , thung cDi se bj To'i tu do.
D l phdng ngua su c l nly, c i c h | thing tnjo t l i gilng dung dup'c trang bj thilt bj bao v | q u i ning. Nhiem vg cua thilt bj I I : gidi han hinh trinh q u i nang cua thung cQi v l dd thung cOi
khi d p bj dut khi q u i ning. Phin tich cic thilt bj b i o v | q u i ning cua he thing trge tai gilng dimg cho thIy, d c thilt bj nly cd 3 bd ph|n: Bd phin han c h l hinh trinh ning; bd phin gilm ddng ning v l bd ph|n 6a thung cQI.
2.1. Thiit bi bio v# qui ning />| thSng tryc tai giing dCmg Hi L^m
Tai md than H I Llm, h | thing tnjc t l i gilng dung thung cui 2 t i n g vdi kich thudc 1670 x 4910 x 6560mm v l dudng d i n hudng cCing phia vdi hudng trao d l i going, vl v|y, d l thilt k l dudng d i n hudng cOa thing cQi a khu vuc to mi|ng gilng l l n trIn thIp tai b i n gdc thiing.
Vdi dudng d i n hudng nhu v | y d l giam ding ning thCing cOi khi x l y ra su c l q u i ning I I ding bp holn xung kilu dia ma s i t BS-286-16B. CIp cua 02 bd holn xung dupe n l i vdi d i m (hinh lb). Thilt bj b i o v | q u i ning tai md than H I Llm trinh biy trIn hinh 1.
Nguyin ly hoat ddng eua thilt bj nhu sau: Khi xay ra su e l q u i ning, thCing cQi di vupt q u i vj tri dOng tai cua gilng, khi thung cQI cham vIo d i m holn xung, d p bd holn xung BS-286-16B dupe n h l ra chin v l l l m giam t i c dd cua thung cQi, khi thiJng d i n vj tri d i m ch|n 1 thi dOng lai.
N l u thung cQi bj rai thi dupe dd' tai 4 dilm bdi thilt bj dd thfing 2.
+ Thilt bj hoan xung kilu dia ma s i t BS-286- 16B ed mdt s l die tinh k j thult sau:
- Lye phanh: 2380, kN;
- Hinh trinh holn xung: S5500, mm;
- T i e dd cOa thung cDi: SIO, m/s;
- Luc chju tai dilm cull: 570, kN;
- Gia t i c holn xung: S9.8m/s';
@C^
KHCNM S 6 6/2016 * CO D|£N - TV DONG HOAW"
Thong tin khoa hpc c6ng nghe m o
a- So di bi tri thiit bi b- So di nguyin /j?
Hinh 1. Thiit bj bio vi qui ning tai giing phy Hi Lim 1- Dim chin, 2- Thiit bj dd thung. 3- Thiit bj hoin xung
sung de tranh sy kgt hay tde dgng cham khi xay ra sy d .
2.2. Thiit bi bao v$ qua ning h$ thing tn^c tai t$i giing dung mo than Nui Beo
Hg thong tryc tai gilng dung phy mo than Nui Beo, CO thung cui 4 t i n g vdi kich thude 5000 x 1700 X 9800mm, vj tri d i n hudng ndm phia ben thiJng cui vi the khong c6 sy xung dgt giu-a cdc thanh d i n hudng vd hudng trao dSl xe godng tgi cae vj tri san ga vd migng gilng. Dk giam d$ng nang thung cui khi xay ra sy c6 qud ndng bing each thay t h i ede thanh d i n hudng kim logl tilt dign khong doi bang cac thanh d i n hudng bang gd ed tilt di^n thay d l i dang nhu thanh nem.
Thanh d i n hudng hinh nem se giam tie dg cua thung tnjc thdng qua ca d u d i n hudng an todn kilu cung, truyt eua thung cui.
Nguyen ly hogt dgng thiet bj nhu sau: (hinh 3b) Khi xay ra sy d qud ndng, thiing cui di vuyt qud
^ vi tri dCrng tai eua gilng, khi ca d u d i n hudng Hg thing dgng nay c6 uu diem la vj tri lap cung. truyt ra thung cui ho|c d l i trgng di vdo d^t khong phg thu|e nhieu vdo k i t d u cua thap thanh dan go dgng nem thi bj hdm vd giam t i c gilng, tuy nhien, trong qua trinh van hdnh d n ^o. Khi thiJng cQi ehuyen d|ng d i n d i m chIng thudng xuydn kilm tra cac bp phdn cdp thep, va dap thi bj chan lai. N l u bj dut edp, thung cQi kgp cdp cung nhu sy hogt dgng eua b0 hoan rai nhung duyc dd bdi thilt bj dd thung 2.
Hinh 2 Thiit bj bio vi qui ning giing phu Hi Lim + Thilt bj dd thung cui FHT-400 c6 mgt so d$c tinh ky thugt nhu sau:
- Lye dd: 400, kN;
- Hdnh trinh hodn xung: 98, mm;
Tren hinh 2 Id thiet bj bao vg qua ndng gilng phy Hd Llm.
KHCNM S 6 6/2016 * CO DIEN - TiJ D O N G HOA
Chao mung 91 nam Ngay Bao chi Cach mgng Viet Nam
a-Soddbitrlthiitbi b- So di nguyin /^
Hinh 3. So di hi thing bio vi qui ning tei giing phu NUI Bio 1- Dim chdng va dip (chin), 2- Thiit bj dO thing, 3- Thanh din hi/dng gi dang nim + Thilt bj giam toe dang nem g6 ed mgt so bj tn^c tai gilng dung Id m0t thilt bj an todn het dac tinh ky thuat:
-Chiludai: 5600, mm;
-D0c6h: 1/75;
- Hdnh trinh ham: <4800, mm;
- Tilt dign dogn dIu: 200 x 200, mm;
- Tilt dign doan cull: 200 x 300, mm;
+ Thiet bj dd thung ed mpt so dac tinh ky thuat sau:
- Lye dy tren mdi diem, 525, kN;
- Kich thyde (daixrgngxeao): 800x400x50, mm Thilt bj nay c6 uu diem Id dan gian, de san xult vd che tao, khong ton nhilu ehi phi kiem tra va bao dudng.
Thilt bj bao ve qua ndng cho hg thing tryc tai gilng dCrng Nui Beo dd duyc Vign Khoa hgc Cong nghg Mo tinh todn va thiet ke. Thilt k l dd duyc Cong ty Siemag Tecberg Id dan vj ehuyen c h l tao thiet bj trye tdi eiJa Due tham tra vd hi$n tgi dang duyc c h l tgo tgi Cong ty Co phin LILAMA 69-3 d l dua vdo lap dat cho dy an Nui Beo.
3. K i t luan
Thilt bj bao ve qud ndng eua hg thong thiet
sde quan trpng. Vigc lya chgn thiet bj bao vg dk dua vdo moi cong trinh d n thilt phai eo sy tim hilu, nghien cuu hit sue ky ludng de phu hyp vdi cdc loai thilt bj trye tdi, k i t elu c i t gilng, thdp gilng trong moi dy dn. Qua phan tich cac thilt bj hign c6 vd vdi myc tieu ndng eao kha nang n$i dja hda vigc che tgo trong nude, da lya chpn thilt bj bao vg qua nang cho hg thong tnjc tai gilng dung Nui Beo dam bao sy an todn, dan gian trong san xult c h l tao vd su dyng./.
Tai ii$u tham khao:
1. TKBVTC Dy dn d I u t u khai thdc h i m 16 md than Nui Beo;
2. Vign Khoa hpc Cong nghg Md - Vinacomin (2013), Nghien cu-u thiet ki, che t^o thap gieng vi h$ pu ly din cap cua /ig thong tryc tai giing dung mo than ham Id Nui Bio;
3. Vign Khoa hpc Cong nghg Mo - Vinacomin (2013), Nghien cu-u thiit ke, chi t?o cot giing cua h$ thong tri^c tai giing dung mo than ham Id Nui Beo;
4. TKBVTC Du an d I u t u khai thac phin dudi muc -50 mo than Hd Llm.