THUYT MINH H THNG BO CHY T NGI. c s thit k: - Cn c vo yu cu ca Siu thi in my Media Mart v vic thit k lp t h thng PCCC cho cng trnh. - Cn c vo tiu chun TCVN - 2622 - 1995 Phng chy, chng chy cho nh v cng trnh yu cu thit k. - Cn c vo tiu chun TCVN 5731 - 1993 thit b cha chy u ni. - Cn c TCVN - 5760 - 1993 thit b cha chy - vi cha chy. - Cn c TCVN 5738 - 1993 h thng bo chy t ng - Yu cu thit k. - Cn c lut PCCC 2001 ca Nc Cng ho x hi ch ngha Vit Nam. * H thng cc quy chun, tiu chun v quy phm c s dng.-

Quy chun Xy dng Vit nam. Phng chy, chng chy cho nh v cng trnh yu cu thit k, TCVN 26221995. Tiu chun Vit Nam TCVN 3254 1989 An ton chy Tiu chun chung Tiu chun Vit Nam TCVN 5739 1993 H thng bo chy. Yu cu k thut.

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II. gii thiu chung Cng trnh Siu thi in my Media Mart bao gm cc khu vc knh doanh, vn phng. Vy vn m bo an ton phng chng chy cho ngi v ti sn l v cng quan trng v cn thit. Cng tc PCCC c lut ho thnh php lnh v c Quc hi thng qua ngy 27/9/1961 v ngy 4/10/1961 Ch tch nc ban hnh lnh s 53-LCT cng b php lnh v PCCC. "Trong cc c quan, x nghip, kho tng, cng trnh, nng trng, vic PCCC l ngha v ca ton th cn b, cng nhn, vin chc v trc ht l trch nhim ca Th trng cc n v y. Thng t lin B Ni V (nay l B Cng An) - xy dng s 03/TTLB ngy 3/11/1989 qui nh ch PCCC trong xy dng cng trnh. Mc 1.2 c nu: - m bo an ton phng chy phi c:

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- H thng phng chy - H thng cha chy - Lut PCCC c hiu lc t ngy 4/10/2001 qui nh r v vic an ton PCCC trong ton dn. III. h thng bo chy t ng Cch tnh u bo Theo cng thc tnh u bo khi, nhit. Chiu cao nh t 3.3-4.2m, din tch bo v ca u bo l f 150m2 ta phi lp 2 u bo tr ln. Tnh khong cch u bo theo cng thc: 2fdb a= Vy khong cch u bo ln nht cch nhau 9.7m. Theo tnh ton tng s u bo l 175 u khi, nhit. Chia thnh 13 knh. Chn 01 trung tm bo chy 15 knh trong 02 knh d phng. III.1. Yu cu k thut ca h thng bo chy t ng. -Pht hin nhanh chng, chnh xc, kp thi theo khu vc c chy -Khi xy ra chy h thng phi pht tn hiu kp thi bng chung, ci, n gip cho cn b trc ban gii quyt x l tnh hung nhanh chng v chnh xc. -Ton b h thng phi c kh nng chng nhiu tt, khng b tc ng bi cc h thng khc nh: in, iu ho thng gi . -Khng b lit mt phn hay ton b do chy gy nn. -Trang thit b phi m bo tin tin v lm vic nhiu nm khng b lc hu III.2.La chn thit b: Thit b c chn la l loi thit b c sn xut vi cng ngh tin tin m bo cc thng s k thut cao, c kh nng thch ng vi mi trng lm vic, khng b lc hu, phi ng b, d vn hnh khai thc s dng. Nguyn l lm vic ca h thng bo chy t ng l dng h thng cc u bo khi, bo nhit, bo sng. pht hin sm v chnh xc cc hin tng pht sinh = 9,7m

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ra chy chuyn thnh tn hiu a v trung tm x l v thng bo ra loa, chung bo ng, n cho mi ngi c phng n x l cn thit. Cc u bo dyTrung tm

TBcui

Chung

Hp k thut

Nt n

S khi ca h thng Khi nhn c cc tn hiu t im bo chy (DETECTOR) hoc t nt n ch ng, trung tm s t ng x l v ch ra chnh xc vng no hoc khu vc no c s c thng qua h thng n LED trn np cc trung tm, sau tn hiu c bo ng trn chung bo ng hoc ci h. Trung tm bo chy c cung cp bng hai loi ngun in: Dng in p xoay chiu 220V v ngun in DC - 24V. Bnh thng h thng lm vic bng ngun in AC 220V. Trong trng hp mt in li, trung tm t ng chuyn sang lm vic vi h thng in p 24V ca c quy d phng. Nh vy, m bo cho h thng bo chy t ng lm vic 24/24h cho mi tnh hung. a-T trung tm bo chy. Mt s thng s k thut ca trung tm bo chy Ngun in cung cp Ngun in d phng S lng knh b-u bo chy. Cc u bo c s dng trong h thng c nhiu loi ta chn loi u bo c quang hc: c s dng rt ph bin, n lm vic trn nguyn tc ca s thu v pht hng ngoi. Khi c khi vo u chm hng ngoi b tn x p vo u thu, nu mt AC - 220V - 50/60HZ DC - 24V 10 knh

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khi ln, u bo s lm vic v t ng pht tn hiu v trung tm qua ng dy dn tn hiu. Mt s thng s c bn: Applicable standard Rated voltage Working Voltage range Current consumption Maximum Switching Current Linht Source Storage temperature Range Dimentions EN54 Pt4 DC 24V DC15V-30V 35 A at 30V 40mA infrared Led -200C - +600C(-40F - +1400F) 100mmx38mm( 100mmx46mm)

Operation Ambient Temperature Range-100C - +500C(-40F - +1220F)

Din tch sn bao ph 70 m2 150 m2 vi chiu cao trn 4 6m. c-u bo nhit gia tng: Khi nhit ca mi trng xung quanh u bo tng ln 200C trong 5 giy, u bo s t ng lm vic, tn hiu c dn v trung tm qua h thng ng dy dn tn hiu. Mt s thng s c bn: Applicable standard Response Grade Rated voltage Working Voltage range Maximum Switching Current Heat sensing Element Storage temperature Range Din tch bao ph d-n bo: Khi c s c, tn hiu c a v t trung tm x l v t t trung tm c tn hiu a ti ci h,chung bo chy khn cp qua h thng ng dy dn tn hiu. Mt s thng s c bn: Rating AC/DC 24V, 21mA Operatiing Temperature Range UL -521 Ordinary DC 24V DC15V-30V 100mA -100C - +500C(-40F - +1220F) -200C - +600C(-40F - +1400F) 30m2 chiu cao trn 4 6 m Air chamber composed with the diaphragm

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Lamp Operating Temparature Range Material Color e-Nt n: Mt s thng s c bn: Plush/Surface Rating Operating Temparature Range Material Color

LED -100C-500C Self extinguishing Plastic Red

Plush Mount AC/DC 24V, 0.2mA -100C-500C Self extinguishing Plastic Red

III.3. Phng n thit k h thng bo chy t ng: Trn c s cc yu cu v nhim v ra i vi h thng bo chy t ng, ph hp vi c im ca cng trnh c nu trn, ta ra phng n thit k nh sau: a. Thit k lp t cc u bo chy, khi trong cc phng (th hin trn cc bn v). Tng mt gm 1 vng Tng hai gm 1 vng Tng 3 gm 1 vng Ton b h thng c 07 vng, chn 01 t 10 knh trong 3 knh d phng, Tt c cc knh c ni ti phng bo v. b. Thit k nt n bo chy v chung bo chy ti cc hnh lang, cu thang ln xung nhm gip cho mi ngi d dng v ch ng thao tc khi m chy mi pht sinh. c. Thit k trung tm bo chy 15 knh c t ti phng thng trc trung tm bo chy s bo ng vng, tng c s c chy. Trung tm c kh nng ghp ni vo mng vi tnh iu hnh. Cp truyn dn dng loi cp tn hiu 2x2x0.75 III.4. Phng n thit k thi cng: - Cc u bo chy c gn st trn - Cc nt n khn cp c gn trn tng cch nn 1,2 m.

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- Chung bo chy t cch trn 0.3-0.5m - n bo chy t cch trn 0.3-0.5m - Cp tn hiu lun trong ng nha 20 n 32 i chm - Trung tm bo chy c treo trn tng bng bu lng 14 cch sn 1,5m - Trung tm c cp tip t an ton.

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