43-2009 Yeu Cau Ki Thuat Lap Dat Nhienlieu CNG

8/10/2019 43-2009 Yeu Cau Ki Thuat Lap Dat Nhienlieu CNG

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TCCS T I U C H U N C S

TCCS 43 : 2009/PVNXut bn ln 1

PHNG TIN GIAO THNGNG B

HTHNG NHIN LIU KH THIN NHIN NN (CNG)

YU CU KTHUT LPT

Road vehicles

Compressed natural gas (CNG) fuel systems

Technical requirements for installation

H NI 2009


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3

Mc lc

Trang

Li ni u ................................................................................................................................................ 4

1 Phm vi p dng ................................................................................................................................. 5

2

Ti liu vin dn .................................................................................................................................. 5

3 Thut ngv nh ngha ..................................................................................................................... 6

4 Yu cu chung .................................................................................................................................... 8

5 Phkin bnh cha v u ni np nhin liu .................................................................................... 8

6 Lp t bnh cha............................................................................................................................. 10

6.1 Vtr bnh cha ........................................................................................................................... 10

6.2 Khoang bnh cha chnh v ph................................................................................................. 14

6.3 Lp t bnh cha....................................................................................................................... 16

7

ng nhin liu CNG...................................................................................................................... 18

7.1 ng nhin liu CNG c p sut ln hn 0,100 MPa.............................................................. 18

7.2 ng nhin liu CNG c p sut nhhn 0,100 MPa............................................................. 19

7.3 linh ng................................................................................................................................ 20

8 Thit biu khin nhin liu CNG.................................................................................................... 20

8.1 Tng quan................................................................................................................................... 20

8.2 Thit biu khin....................................................................................................................... 20

8.3 Lp t........................................................................................................................................ 23

8.4

Dy in...................................................................................................................................... 23

9 Gn nhn........................................................................................................................................... 23

9.1 Nhn nhn bit............................................................................................................................ 23

9.2 Du nhn bit.............................................................................................................................. 23


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Li ni u

TCCS 43 : 2009/PVNc bin son da trn cc tiu chun:

MS 1096 : 1997, Code of practice for the use of CNG fuel in

internal combustion engines;

ISO 15500-1, Road vehicles Compressed natural gas fuelling

systems, Part 1: Safety requirements;

ISO 15500-2, Road vehicles Compressed natural gas fuelling

systems, Part 2: Test methods.

TCCS 43 : 2009/PVNdo Vin Du kh v Cng ty Chbin v Kinh

doanh cc sn phm kh bin son, Tp on Du kh Quc gia Vit

Nam cng b.


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5

T I U C H U N C S TCCS 43 : 2009/PVN

Phng tin giao thng ng b

Hthng nhin liu kh thin nhin nn (CNG)

Yu cu kthut lp t

Road vehicles

Compressed natural gas (CNG) fuel systems Technical requirements for installation

1 Phm vi p dng

1.1 Tiu chun ny quy nh cc yu cu cho lp t hthng nhin liu kh thin nhin nn (CNG)

trn xe c ng ct trong sdng nhin liu CNG hon ton hoc mt phn.

1.2 Tiu chun ny khng p dng cho:

Nhng thay i kt cu ln c thc hin i vi phng tin (Nhng thay i ln vkt cu l

nhng thay i khng c nh ngha trong 4.3);

Cc hthng nhin liu CNG cho tu bin;

Cc hthng nhin liu cho cc ng ct trong cnh v cc my tuabin kh.

2 Ti liu vin dn

Cc ti liu vin dn sau y l cn thit khi p dng tiu chun ny. i vi cc ti liu vin dn ghi

nm cng bth p dng bn c nu. i vi cc ti liu vin dn khng ghi nm cng bth p

dng phin bn mi nht, bao gm ccc bn sa i (nu c).

TCCS 44 : 2009/PVN,Phng tin giao thng ng bH thng nhin liu kh thin nhin nn

(CNG) Phng php th.

ISO 4014, Hexagon head bolts Product grades A and B.

ISO 4032, Hexagon nuts, style 1 Product grades A and B.

NZS 6403, Vehicle wiring cables, PVC-insulated, with copper conductors.

SAE J30, Fueland oil hoses.


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3 Thut ngv nh ngha

Trong tiu chun ny sdng cc thut ngv nh ngha sau:

3.1

c ph duyt hoc ph duyt

c ph duyt bi hoc ph duyt ca cquan nh nc c thm quyn

3.2

Ngi c uquyn

Ngi c cquan nh nc c thm quyn lin quan uquyn thc hin cc trch nhim vtr

ny.

3.3

Kh thin nhin nn (CNG)

Kh thin nhin c nn c thnh phn chyu l metan (CH4).

3.4

Bnh cha CNG

Bnh cha c chto bng thp khng hn hoc bng vt liu composite sdng cha CNG

p sut lm vic ti a 250 bar v c dung tch ti a l 150 L.

3.5

Khoang bnh cha

Cu trc bng vt liu cng hoc dun bao ton bbnh cha v cc thit bphtrbnh cha, mc

ch ca khoang ny l tp hp kh r rv xkh r rra bn ngoi phng tin.

3.6

Khoang phbnh cha

Cu trc bng vt liu cng hoc dun c gn vi bnh cha, khoang ny bao kn cc thit bphtrbnh cha, mc ch ca n l tp hp kh r rv xkh r rra bn ngoi phng tin.

CH THCH: Chc nng cbn ca khoang chnh hoc khoang phl tp hp kh r rv x, khng c chc nng bo vv

vt l.

3.7

Van bnh cha

Van ng iu khin bng tay c lp trn bnh cha dng mhoc ng ng cung cp CNG.

N c mt a nlm bng vt liu dnng chy.

3.8


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Tiu chun tng ng

Tiu chun trong cc c tnh kthut ging vi tiu chun ny mc d cch dng thoc trnh by

c thhi khc.

3.9

Thit bchng qu p

Thit bxp tng.

3.10

Bchha kh

Thit bca ng ctrn kh nhin liu vi khng kh.

3.11

Kh thin nhin dng cho phng tin giao thng vn ti (NGV)

CNG dng lm nhin liu cho ng ct trong.

3.12

Van mt chiu

Van chcho php nhin liu chy qua theo mt chiu xc nh.

3.13

ng ho p

Thit bhin thp sut trong bnh cha.

3.14

Bgim p

Thit bgim p kh nhin liu ti gi trthch hp trc khi c dn ti bchha kh (3.10).

3.15

Van dng cp

Van ng vn hnh bng tay dng ng hoc mng cp CNG trong trng hp bo dng

hoc sa cha hthng.

3.16

Van ngt

Van dng ng dng kh.

3.17

Cquan nh nc c thm quyn


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Cquan hoc ban ngnh nh nc c trch nhim vcc lnh vc qun l tng ng.

4 Yu cu chung

4.1 Thit bc ph duyt

Chc sdng cc thit bv hthng c cquan nh nc c thm quyn ph duyt.

4.2 Yu cu c bit

Ngn cm lp t hthng nhin liu CNG trong cc phng tin c hthng si m khoang hnh

khch ly khng kh tkhoang ng c, trkhi hthng si m ny khng cn hot ng v kn kh

i vi khoang hnh khch.

4.3 Thay i kt cu

Vic sa i hoc thay i i vi phng tin lp t thit bphi c thc hin tun theo cc ch

dn kthut tin cy.

Nhng thay i i vi cc thit bdi y phi tun theo quyt nh s15/2005/Q-BGTVT ca B

Giao Thng Vn Ti vci to phng tin giao thng cgii ng b, tun theo hng dn thc

hin quyt nh 15 ca ccng kim Vit nam:

4.3.1 Treo

Nhng vtr lp, dng hnh hc, iu chnh sng gm xe, cc trc chnh v trc ph, hoc ccu li.

4.3.2 Tn cha nhin liu nguyn gc

Hthng bnh cha nhin liu, bphn gn bnh cha, cc thit bnp hoc thot hi.

CH THCH: Trong mt strng hp, bnh cha nhin liu l mt phn kt cu phng tin.

4.3.3 Kt cu phng tin

Cc lc ng knh ln hn 13 mm khng c t trong phm vi 40 mm cch mp thanh ging,

im hn hoc im chu ti trng trc tip (nhcht neo ai). Chcc lcho php c ng knh ln

hn 13 mm c dng lp van np hoc cho cc mc ch xkh.

4.3.4 Hthng phanh

Bao gm phanh tay v cc cu kin.

5 Phkin bnh cha v u ni np nhin liu

5.1 Van bnh cha

5.1.1 Mi bnh cha phi c van ngt c gn trc tip vo bnh. Cc van bnh cha phi an ton

v c thngt ng cp kh ti hthng nhin liu.


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Van c thit kcho p sut lm vic ca bnh cha v c khnng chu c p sut thnghim

ca bnh.

5.1.2 Cc van ngt bnh cha phi c gn tay vn hoc cn nng thc hin vic ng/mvan

ddng. Van phi c gn vi mt thit bxp, thit bny lun tip xc vi kh trong bnh bt kl

tay vn/cn nng v tr mhay ng, thit bxc mt a nc ch to bi hp kim dnngchy. Hp kim ny c nhit nng chy danh nh l 100 oC.

Khi hp kim nng chy, a nschy do ra p sut khng thp hn 24,75 MPa v khng cao hn

p sut thnghim ca bnh cha, ni cch khc n sduy tr trng thi khng lm vic.

5.1.3 Van bnh cha phi c ren u ra 1/4 in NPT (ren trong) v ren thn van tng thch vi ren ca

bnh cha.

5.2 u ni np nhin liu

5.2.1 Thit ku ni np nhin liu

u ni np nhin liu phi l loi c ph duyt, c thit ktip nhn u np nhin liu

kiu u d c cc kch thc cbn c a trong Hnh 1.

5.2.2 Np che bi u ni np nhin liu

u np nhin liu phi c np che bi.

5.2.3 Hthng van mt chiu ca thit bnp

Trn ng ng np phi c van mt chiu ngn dng kh nhin liu tbnh cha quay ngc trli u np. Van mt chiu phi c t cng gn u np cng tt.

5.2.4 Vtr u ni np

u ni np phi c t vtr thng gi v an ton, thng l khoang ng cv phi tun theo

cc yu cu sau:

5.2.4.1 Vic kt ni v np nhin liu phi c gim st tbn ngoi phng tin. Chthc hin kt

ni tbn ngoi nu khng lm thot hi vo trong phng tin, v vic lm mt tc dng ca

khoang chnh v khoang phbnh cha.

5.2.4.2 u ni np c bo vbng cch t trong hc pha di xe (c thbo vu ni ny

bng phng php khc vi an ton tng ng tkhu chto phng tin). Nu u ni np

c t cch thanh chn trc hoc sau xe 200 mm th khong cch tvan mt chiu ti thanh chn

phi khng nhhn 200 mm.

5.2.4.3 u ni np nhin liu phi c gn chc vo phng tin, thit bgn khng bmo. u

ni phi chu c lc ko ti thiu l 670 N theo bt khng no m khng nh hng ti skn

kh.


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Kch thc o bng milimet

10,86

10,74

3

14 5,5

46-0+,6

NT CHNG BI

Giong ch O

CH : u d np phi nh hn 10 mm so vi kch thc ny

Vt cnh vi gcnh hn 90o

A

+5o

-0o+5o

-0o

Gc vi R 0,13

Gc vi R 0,51 8,598,47

CHI TIT RNH HNH ACHO GIONG CH O

2,29

12,5

10

11,11

10,99

Khong cch va u d ph hp viccc im ca giong ch O

U NI NP

L c ren trong(gn vo phng tin)

Thit bkha np

Ming m

25

Hnh 1 u ni np v nt chng bi

6 Lp t bnh cha

6.1 Vtr bnh cha

6.1.1 Bnh cha, ph kin v ng ng phi c gn v tr an ton bn trong phm vi ca

phng tin. Cc bnh cha c t sao cho khng nh hng bt li ti cc qu trnh di chuyn ca

phng tin.

6.1.1.1 i vi cc bnh cha c gn bn ngoi, trong mi trng hp, khong cch tvan ti hai

u phng tin khng c nhhn 200 mm trkhi chng c bo vgim thiu khnng h

hng do va chm, lt hoc tai nn.

6.1.1.2 Bnh cha phi c b tr v thng hi tt m bo kh r r t van khng i vo khoang

hnh khch hoc bung li.


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6.1.1.3 Cc bnh cha phi c btr sao cho nhit bnh cha khng vt qu 45 oC. Trong mi

trng hp th khong cch gia bnh cha v ng xkhng c nhhn 75 mm.

6.1.2 Cc bnh cha khng c gn:

6.1.2.1 Trn nc hoc trn khoang hnh khch trkhi c cquan nh nc c thm quyn ph

duyt ring .

6.1.2.2 Pha trn mt sau ghngi li xe.

6.1.2.3 vtr bn di phng tin, lm gim khong sng gm xe (xem Hnh 2).

CH THCH: Tiu chun ny d tnh rng cc bnh cha nhin liu c gn cnh sc sdng trong hu ht cc

trng hp, nhng cho php cc bnh cha c ththo lp c sdng trong cc phng tin khi n l chlp khi c th.

Cn ch ti cc trng hp v iu kin hot ng khi nh gi khnng lp t bnh cha gn cnh.

Trong trng hp c bit, chnhng phng tin vn hnh rt xa trm np nhin liu (chc thnp nhin liu bng cch

thay cc bnh ht bng cc bnh cha y) mi sdng bnh nhin liu loi c ththo ri. Tuy nhin nhng bnh cha nhvy phi p ng c cc yu cu sc bn nu trong 6.3.1 (chu c mt lc theo bt kphng no khng nhhn

20 ln trng lng ca bnh cha y).

Gc khi hnh D

im thp nht ca snhoc thn xe (xem 6.1.4)

B C

17o

A

Khu vccho php

im tip xcgia ng vbnh trc

Trc Sau

im tip xcgia ng vbnh sau

Hnh 2 Cc vng trng

6.1.3 cao so vi mt t ca bnh cha

Cc bnh cha phi c btr ti vtr ph hp vi tt ccc yu cu sau:

6.1.3.1 Khi xc nh cao, khi lng phng tin phi l khi lng khng ti, bao gm ccc

thit bbsung gn cnh vo phng tin vi cc bnh cha y du, nc v nhin liu;

6.1.3.2 Cc bnh cha lp gia v sau cc trc ca xe phi khng thp hn im thp nht ca

cc bphn sau y:

Bphn thp nht ca thn xe;

Bphn thp nht ca kt cu sn hoc sn ph, nu c;


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im thp nht ca ng c;

im thp nht trn hp s (bao gm cn hoc hp chuyn momen xon) nhng ngoi tr cc

hp khc.

6.1.3.3 Gc dc: Cc bnh cha khng c thp hn im c nh ngha bi gc dc 17o(xem

tnh ton Bng 1).

tnh gc dc, cn xc nh 2 mt phng sau (xem Hnh 2):

Mt phng cha ng thng ni hai im tip xc ca bnh xe trc vi mt ng (im B) v

im thp nht thn xe gia phng tin nm gia hai trc (im A) (ng thng AB trong Hnh 2);

Mt phng cha ng thng ni hai im tip xc ca bnh xe sau vi mt ng (im C) v

im thp nht thn xe gia phng tin nm gia hai trc (im A) (ng thng AC trong Hnh 2).

6.1.3.4 Gc khi ng: Cc bnh cha phi t trong khu vc c nh ngha bi cc im C v D trong Hnh 2;

Khi tnh gc khi ng, cn xc nh mt phng cha ng thng ni hai im tip xc ca bnh

xe sau vi mt ng (im C) v im thp nht pha sau ca thn xe.

6.1.3.5 Tt ccc khong cch phi c o tim y ca bnh cha, phkin, gi hoc thit

bgn thp nht trn bnh cha hoc khoang bnh cha (xem Hnh 2).

6.1.4 Rmooc v smirmooc

ng dn nhin liu tcc bnh cha CNG ti ng ckhng c php chy qua phn ni tu

ko n rmooc trkhi tt ccc iu kin sau c thomn:

6.1.4.1 Khi gia u ko v rmooc s dng ng ng dn nhin liu chu p th h thng phi

c ph duyt bi cquan nh nc c thm quyn;

6.1.4.2 p sut bnh cha phi c gim ti gi trnhhn hoc bng 2,15 MPa bng cch sdng

bgim p scp tiu chun t pha trc khp ni gia u ko v rmooc. Tt cbphn

pha sau ca bgim p scp phi c ph duyt bi cquan nh nc c thm quyn. Tt c

cc thit bny phi c nh sn xut khuyn co sdng. Tt ccc bphn pha sau ca b

gim p scp phi c bo vchng li stng p (do shhng ca cc bphn khc) bng

cch sdng mt van x, van ny phi ngn p sut pha sau bgim p scp khng vt qu

3,3 MPa;

6.1.4.3 ng nhin liu ni u ko v rmooc phi l loi ng mm m bo cc yu cu nu trong

7.1.1, c xc nhn l thch hp vi CNG, v phi c b tr c thdi chuyn cng vi khp

ko;

6.1.4.4 Dng loi khp ni cch ly ni ng mm (gia u ko v rmooc) v ng ng nhin

liu cnh c lp t trn rmooc.


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ng mm pha sau khp ni cch ly ny phi khng bkp hoc khng cn trkhp ni hot ng

chnh xc trong trng hp xy ra tai nn.

Chni phi c gn vo rmooc sao cho khng cn trhot ng ca khp ni cch ly, thit bgn

khng bbin dng khi p dng ti trng thl 40 kg theo hng tin v li ca xe.

6.1.4.5 Cc khp ni ng mm, thng c gn vo u ko, phi l kiu an ton hoc tho kh, ccc van bn trong trnh tht thot CNG ckhi khp ni c tho.

6.1.4.6 ng nhin liu CNG pha trc khp ni cch ly phi c bo vbng van cch ly vn

hnh bng tay.

6.1.5 Bnh cha bn trong

Khi bnh cha c t trong phng tin th:

6.1.5.1 Ton b thn ca bnh cha cng vi cc bphn v phkin gn vo phi c t bn

trong mt khoang hoc;

6.1.5.2 Cc van v cc u ni ng km theo hoc c gn vo bnh cha phi c t bn trong

mt khoang phring bit gn vi bnh cha v c thng ra bn ngoi khng kh. Cc dng btr

lp t phi cho php tip cn ddng van bnh cha.

CH THCH: Khoang hnh l pha sau xe khng c coi l khoang bnh cha theo 6.2 bi v c nhiu kh khn lin quan

n hiu qulm kn, bo tr cc lthng hi, v v sc mt ca thit bin trong hu ht cc khoang sau xe.

Bng 1 Chiu cao khong trng gc dc 17o

Khong cchbnh xe

mm

Chiu cao khong trnggc dc 17o

(im A Hnh 2)mm

Khong cchbnh xe

mm

Chiu cao khong trnggc dc 17o

(im A Hnh 2)mm

1 800 134 3 500 2611 900 142 3 600 2702 000 149 3 700 2762 100 157 3 800 2842 200 164 3 900 2912 300 172 4 000 2982 400 179 4 100 3062 500 187 4 200 3132 600 194 4 300 3212 700 202 4 400 3282 800 209 4 500 3362 900 216 4 600 3433 000 224 4 700 3513 100 231 4 800 3583 200 239 4 900 3663 300 246 5 000 3733 400 254 - -

CH THCH: Nu gi tro khong cch bnh xe gia hai gi tr a trn th p dng gi trcao nht

ktip.


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6.2 Khoang bnh cha chnh v ph

6.2.1 Kt cu

Khoang bnh cha chnh hoc phphi tun theo cc yu cu sau y:

6.2.1.1 Phi c kt cu sao cho kh r rtcc phkin, bphn hoc ng ng khng thlt vo

khoang kn, khoang hnh khch hoc khoang hnh l ca phng tin;

6.2.1.2 Cc ca, np hoc cc chni kt cu c thmhoc tho hn ra khi bo dng, kim tra

ti thiu 10 ln m khng c nh hng nghim trng vbn. Cc bn lv cc kho ca ca v

np phi c thit kngn cnh ca hoc np bt ra khi vtr ng v kho;

6.2.1.3 Khoang chnh hoc khoang phkhng c cha bt kngun nh la v thit bhoc dy

dn in no tr khi n thc s an ton hoc c ph duyt bi c quan nh nc c thm

quyn;

6.2.1.4 Cc vt liu hn kn phi ph hp vi nhit v cc iu kin mi trng khc;

6.2.1.5 Khi khoang phchu p sut thutnh trong l 0,030 MPa trong thi gian 5 min th cc vt liu

hn kn hoc giong phi khng bdch chuyn hoc vn nguyn vn;

6.2.1.6 Kt cu phi chu c lc va p l 60 kg ti bt kim no trn bmt ngoi ca khoang

ph, bt khhng no cng khng cho php gy ra r rkh trong trng hp p sut thnghim

nhtrong 6.2.1.5. Lc va p phi c to ra bi thit bo c bmt trn phng c ng knh

20 mm;

6.2.1.7 Khi sdng vt liu dun bao kn th phi lp mt tm chn ring bo vcc van v

phkin khi bhhng do va chm chc;

6.2.1.8 Khi khoang phc tho sa cha ln u v ti cc thi im kim tra nh k, cn c

bit ch kim tra m bo khng c bt kssuy gim no vcht lng vt liu. Bt kkhoang

phno c xut hin cc tn hiu suy gim cht lng u phi c thay th.

6.2.2 Thng hi

Bn trong ca khoang chnh hoc khoang phphi c thng vi bn ngoi bi mt hoc nhiu lthng hi tun theo cc yu cu sau:

6.2.2.1 Tng tit din ca cc lthng hi khng c nhhn 2 000 mm2(xem Bng 2);

6.2.2.2 Lthng hi phi cch t nht 75 mm so vi ng xhoc cc ngun nhit khc;

6.2.2.3 Vtr v cch btr ca lthng hi v cc ng lin quan phi m bo gim thiu stch t

kh;

6.2.2.4 Cc lthng hi phi c t cch mp khung hoc im hn hoc im chu ti trng trc

tip mt khong cch khng nhhn 40 mm (xem 1.2).


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Bng 2 Thng slthng hi

ng knhmm

Tit dinmm2

ng knhmm

Tit dinmm2

68

10

12

15

20

25

3050

80

115

180

315

490

3035

40

45

50

55

60

700960

1 250

1 590

1 960

2 370

2 830

6.2.3 Tip cn cc van

Van ngt ca bnh cha phi c thiu khin c ti vtr lp t. Van bnh cha c btr c

thvn hnh tbn trong phng tin, vn m bo skn ca khoang chnh hoc khoang ph. Thit

bvn hnh van c thi qua thnh ca khoang chnh hoc khoang phhoc c t hon ton bn

trong khoang chnh. Cc yu cu sau y phi p ng:

6.2.3.1 Nu thit bvn hnh van i qua thnh khoang chnh th phi lp giong lm kn kh;

6.2.3.2 Khi khoang chnh hoc khoang phl cu trc cng v ton bcn vn hnh nm bn trong

thnh khoang chnh hoc khoang phth vic tip cn phi qua mt ca gikn kh, ca ny c th

mm khng cn dng c. Ca phi c cc du hiu chdn rng ca ny phi c gitrng thi

ng trkhi cn tip cn van bo dng hoc trong trng hp khn cp;

6.2.3.3 Khi khoang chnh hoc khoang phc chto bng vt liu mm th cc thit bvn hnh

van phi c nhn bit ddng bi mt vng trn mu chi. Vt liu chto khoang iu kin

cho php vic ng nhanh cc van m khng gy hng ti skn ca khoang chnh hoc khoang

ph.

6.2.4 Hthng ng dn

Tt ccc ng ng hoc ng mm i qua khu vc kn ca phng tin phi t trong mt ng dn

kn kh tbn trong phng tin, c thng vi bn ngoi khng kh v c bo vkhi hhng t

bn ngoi v phi tun theo cc yu cu sau:

6.2.4.1 Hthng ng dn cng ngn cng tt nhm m bo san ton;

6.2.4.2 Cc im ni phi c kp v khng c dng cc cht lm kn hoc kt dnh gimi

ni. ng dn phi c bo vkhi hhng do thit bkp bng cch lp giong m.


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6.3 Lp t bnh cha

6.3.1 Gn vo vo phng tin

Bnh cha phi c gn chc chn vo phng tin ngn s trt, quay v lng do rung, tun

theo cc yu cu sau:

6.3.1.1 Phng php gn khng c gy ra cc lc qu mc hoc gy mi mn trn vbnh cha;

6.3.1.2 Phng php gn khng c lm yu i kt cu ca phng tin v khi cn thit c thgia

c lc m bo tun theo mc 6.3.1.3. Khong cch gia bnh cha v cc b phn khc ca

phng tin khng c nhhn 5 mm;

6.3.1.3 bn ca cc thit bgn c thxc nh bi thnghim ng lc hc hoc thnghim tnh

(cc lc trc tip xuyn qua trng tm ca bnh cha).

Khi c thnghim tun theo TCCS 44 : 2009/PVN, bnh cha khng btch khi phng tin vi

gia tc nhsau, trong gl gia tc trng trng.

6.3.1.3.1 Phng tin c ti trng cho php ti a nhhn 3,5 tn:

+ 20gi vi gia tc dc theo hng tin ca phng tin;

+ 20gi vi gia tc dc theo hng li ca phng tin;

+ 8gi vi gia tc hai bn phng tin theo chai hng;

+ 4,5gi vi gia tc hng thng ng ln trn.

6.3.1.3.2 Phng tin c ti trng cho php ti a ln hn 3,5 tn:

+ 10gi vi gia tc dc theo hng tin ca phng tin;

+ 10gi vi gia tc dc theo hng li ca phng tin;

+ 5gi vi gia tc hai bn phng tin theo chai hng;

+ 4,5gi vi gia tc hng thng ng ln trn.

6.3.1.4 Trong trnghp khng thnghim hoc khi khng thtnh ton c th phi p dng cc

yu cu thit ksau:

6.3.1.4.1 C t nht 4 im gn vi khung phng tin, khong cch gia cc im phi m

bo tnh n nh ca bnh cha;

6.3.1.4.2 Khi mt bnh cha c neo vo mt tm kim loi th tm kim loi phi c gia cbi mt

tm c din tch khng nhhn 3 600 mm2v dy khng nhhn 2,5 mm. Tt hn l sdng mt

vng m trn, cn nu sdng mt tm hnh vung th cc gc phi vt trn c bn knh 10 mm v l

bulng phi c t tm ca tm/vng m. Cc tm/vng m gia clc nhvy phi c nh

dng theo hnh dng ca tm kim loi hoc thanh khung sn;


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6.3.1.4.3 Khi cc bulng neo xuyn qua lchng, cn phng ngn chn smo ca phn ny

khi chu ti trng;

6.3.1.4.4 Cc bulng neo hoc ai c phi c ng knh khng nhhn cc gi trtrnh by trong

Bng 3 v ph hp vi sc bn mc 8,8 (xem ISO 4014) vi cc ai c tun theo ISO 4032;

6.3.1.4.5 Khi cc ai kp c sdng, th mi bnh cha c lp t nht hai ai bng thp. Cckch thc ca ai khng c nhhn kch thc trong Bng 3. Nhng ai nhvy phi c gn

v c cng tun theo cc khuyn co ca nh sn xut nu c th. ngn khnng xy ra n

mn bn ngoi khi sdng cc ai kp th pha trong ca cc ai phi c m cao su cng khng

ht m hoc vt liu tng ng. Bnh cha cng phi c bo vtng tkckhi bnh cha t

ln cc i tng kim loi khc nhl khung gn;

6.3.1.4.6 Khi sdng cc ai np gn th phi c cc phng php thch hp chng ti trng ln

bnh cha. Li cc ai np gy ma st thng khng c chp nhn trkhi c thchng minh

tun theo cc yu cu (xem 6.3.1.3). Dng gic chp nhn l gn thp gc 50 mm50 mm c

chiu di 200 mm vo phng tin mi u bnh cha. Mi thp gc phi hng gc theo trc di

ca bnh cha c mt chn thng ng v c gn cung cp khe h7 mm 3 mm vi u bnh

cha. Chn kia ca thp gc phi c gn vo phng tin bi ti thiu hai ai c c ng knh

10 mm. Khi thn hoc khung kt cu ca phng tin c thchu c ti trng yu cu th cc thnh

phn ny c thc sdng to khe h7 mm 3 mm;

6.3.1.4.7 Cc ai c bt vt hoc cc thit bnp phi tn chng li slng hoc c kho hoc

cht li sau khi cng.

Bng 3 Kch thc ca thit bgn

Kch thc bnh cha(Dung tch nc)

L

Cc kch thc ai Kch cdanh nh

nhnhtmm

ng knh ai c hoc bulng chocc thit bgn kch cdanh nh

Mm

0 < L 100 30 x 3 10

100 < L 150 50 x 6 12

L > 150 Theo ph duyt ring

6.3.2 Nhiu hn mt bnh cha. Thit kring c thc yu cu cho vic gn (xem 4.3).

6.3.3 Cc du nhn bit bnh cha c thc c vtr lp t.

6.3.4 Cc kiu lp t bnh cha: xem Hnh 3.

6.3.5 Che chn


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Khi lp t, cc van v mi ni trn bnh cha c bo vgim ti thiu khnng hhng do s

ctip xc vi cc i tung cnh hoc do cc i tng ngoi ng va p vo. Cc van phi

c bo vgim ti thiu khnng hhng do va chm, lt, hoc do cc tai nn khc.

7 ng nhin liu CNG

7.1 ng nhin liu CNG c p sut ln hn 0,100 MPa

7.1.1 ng mm

7.1.1.1 Lp t

ng mm phi c cung cp v c lp nhmt hthng hon chnh v vic kim chng c th

ti p sut khng nhhn 27,5 MPa vi cc phkin c gn trc khi lp t.

Ngoi cc yu cu ca 7.1.3, th ng mm phi c lp t tun theo cc yu cu sau:

7.1.1.1.1 Bn knh cong ca ng khng c nhhn 35 mm hoc theo quy nh ca nh sn xut;

7.1.1.1.2 ng mm phi c gn vo khung sn hoc thn phng tin bi cc np c m, c

gn ti cc im cch nhau khng qu 300 mm v phi c gn trc v sau mi khc cong;

7.1.1.1.3 Cc kp ng phi c khnng n hi v c gn vo phng tin ngn chn sdi

chuyn dc hai bn v lm hhng ng mm, khng blng di bt kiu kin vn hnh no;

7.1.1.1.4 ng mm phi c t cch cng xa hthng kh xcng tt, trong mi trung hp khng

c gn hn 100 mm. Khi ng mm c t cch ng xtrong khong t100 mm n 200 mm thphi lp thm tm che chn bng kim loi t gia ng xv ng nhin liu.

7.1.1.2 Kim tra

Ti thi im kim tra nh k, ng mm phi c kim tra pht hin cc chxon, tht nt v h

hng hoc chvbxc. ng mm phi bloi khi pht hin mt trong cc khuyt tt .

ng mm qua sdng v chu p khng c php ti sdng.

7.1.2 Mi ni v lin kt

7.1.2.1 Mi mi ni hoc phkin lin kt trn ng ng nhin liu cng chu p cao phi l loi

c ph duyt cho sdng vi CNG v phi chu p sut thnhnht l 70 MPa m khng br r

hoc khuyt tt no.

7.1.2.2 Slng im lin kt v ni phi l ti thiu i vi tt ccc bphn.

7.1.2.3 Cc mi ni hoc lin kt trn ng nhin liu CNG phi c t cc vtr c thtip cn

v kim tra ddng.

7.1.2.4 Phng php ni phi l loi c ph duyt v phi gichc chn ng nhin liu trongphkin.


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7.1.2.5 Khnng tng thch ca phkin ni

Cn m bo rng vt liu ca ng ng v phkin l tng thch.

7.1.3 Gn v nh v

ng ng cng v ng mm p sut cao trong cc phng tin phi tun theo cc yu cu sau:

7.1.3.1 Bt kng ng kh no nm trong khoang li hoc khoang hnh khch phi c t bn

trong mt khoang kn ring c ng thng hi hoc t trong ng dn;

7.1.3.2 Thn phng tin c tc dng bo v trnh va chm. Khi ng ng nm bn di thn

phng tin, ng ng phi c che bi cc thnh phn kt cu ca khung hoc gm, nu khng

th cng phi c bo van ton trnh bt bay vo;

7.1.3.3 Cc ng nhin liu CNG khng c t bn trong cc hp kn hoc cc vtr khng th

tip cn;

7.1.3.4 Khng chp nhn hoc khuyn co vic sdng khung hm trc truyn ng t ng

nhin liu. Nu ng i ny l phng php thc tduy nht lp t th ng nhin liu phi

c t dc theo gc thp ca khung hm vi mt di ca ng nhin liu khng ln hn 15 mm

pha trn mt giao ct vi hsn. ng nhin liu phi i theo tuyn c khong cch ngn nht c

th. ng nhin liu phi c khong cch ti thiu l 40 mm so vi trc truyn ng trong tt ccc

iu kin vn hnh. Phng php ny khng c p dng i vi cc phng tin c ng trc

truyn ng hxuyn qua khung hm;

7.1.3.5 Khng chp nhn hoc khuyn co vic sdng khung vm bnh xe t ng nhin liu;

7.1.3.6 Cc ng nhin liu phi i theo ng ngn nht tun theo cc yu cu ca mc 7.3.2;

7.1.3.7 Cc ng nhin liu phi c gn chc chn vo khung xe hoc thn xe bng kp t cch

nhau khng qu 660 mm. ngn nga khnng n mn ca ng ng, gia kp v khung xe/thn

xe phi c ming m;

7.1.3.8 Cm phn dng sdng trong cc phng tin nhiu bnh cha phi c lp vtr c

bo v. Cc ng ng nhnh ca cm phn dng phi c linh ng ngn nga hhng cho

ng ng, van v cc phkin do rung ng, gin nhoc co bp;

7.1.3.9 ng ng phi c bo vkhi hthng kh xbng khong cch thch hp (khong cch

ti thiu l 100 mm) hoc bng tm chn thch hp;

7.1.3.10 Cc ng nhin liu khng c lp ni khng thnhn thy hoc khng kim tra c

hoc ddng thay i ngoi trnh c quy nh trong 6.2.1.2.

7.2 ng nhin liu CNG c p sut nhhn 0,100 MPa

Tt ccc ng nhin liu cho sdng vi p sut hot ng khng vt qu 0,100 MPa (ng mm

p sut thp) phi tun theo cc yu cu sau:


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7.2.1 ng ng p sut thp phi bng vt liu mm, khng thm nc, thch hp cho CNG vi

nhit ln ti 100 oC v c thchu c p sut bng 5 ln p sut ln nht c thc trong qu

trnh vn hnh;

7.2.2 Cc mi ni v lin kt cho cc ng nhin liu p sut thp phi thch hp sdng vi

CNG v c thchu c p sut bng 5 ln p sut ln nht c thc trong qu trnh vn hnh, vphi tun theo 7.1.2.2, 7.1.2.3 v 7.1.3.

7.3 linh ng

7.3.1 ng mm p sut thp phi chiu di ng cc thdi chuyn ddng.

7.3.2 ng nhin liu p sut cao phi c lp t cung cp schuyn ng tng i gia

thn/sn v cc bphn ca nhin liu hoc sthay i nhit trn ng nhin liu.

7.3.3 Tt cc ng ng nhin liu cnh gia hai bphn bt kphi c lp vng m gin n

hoc m chU cung cp linh ng cn thit (xem 7.3.2).

8 Thit biu khin nhin liu CNG

8.1 Tng quan

8.1.1 Thit biu khin nhin liu CNG bao gm tt ccc thit bcn thit chuyn i CNG p

sut cao tbnh cha ti bchha kh cung cp cho ng c.

8.1.2 Tt ccc thit biu khin chu p ln hn 0,100 MPa l cc bphn hoc bchuyn iphi c ph duyt bi cquan nh nc c thm quyn.

8.2 Thit biu khin

8.2.1 Blc

Ti im kt thc ca mi ng ng cp nhin liu CNG trc khi i vo bgim p, phi lp thm

blc c thit kph hp c thtch cc ht cn trong nhin liu c thgy sccho bgim p.

8.2.2 Van ngt CNGVan ny c chc nng ng ng cp nhin liu ti ng c. Van ny c kch hot bi thit b

iu khin thay i nhin liu trong phng tin vn hnh bng nhin liu kp hoc bi cng tc nh

la trong phng tin vn hnh n nhin liu. Thng thng, y chnh l bgim p nhng trong

mi trng hp, thit bny phi c lp pha sau blc.

8.2.3 Van ng vn hnh

Van ng vn hnh phi c lp trn ng ng p cao gia van bnh cha v van hoc bphn

khc trong khoang ng cv gn vi bgim p. Van phi c thvn hnh ddng ti vtr clp t ti k thi im no, c bit l trong qu trnh vn hnh cung cp nhin liu. Van phi gn


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nhn cnh Van ng vn hnh CNG hoc cm t tng tch r chc nng ca van. V tr

ng v m van phi c nh du r rng (xem 9.2.3).

8.2.4 Hthng gim p

8.2.4.1 Hthng gim p phi khng cho php kh i qua sau khi ng c ngng quay, kckhi

nh la vn cn hoc tt.

8.2.4.2 Thit bgim p phi:

8.2.4.2.1 c lp chc chn cch xa cc im u ca phng tin;

8.2.4.2.2 c lp chc chn gn vi vtr bchho kh ng c(xem 8.2.4.3);

8.2.4.2.3 C thtip cn ddng cho bo dng nh k, iu chnh v kim tra;

8.2.4.2.4 c lp cch xa h thng kh xkhi c th. Khi khong cch nhhn 150 mm th phi

c che chn khi nhit bc x v bt ksnh hng no tkh x do h hng ca h thngkh x;

8.2.4.2.5 c lp t thch hp trnh tc ng do va chm;

8.2.4.2.6 Cho php schuyn ng tdo ca tt ccc ng mm;

8.2.4.2.7 Hthng tun hon nc (khi cn thit) c ni tun theo cc hng dn ca nh sn xut

v khng c van iu chnh dng chy no trong hthng c thng dng nc thit bgc;

8.2.4.2.8 Bgim p phi c lp vtr khng cao hn vtr cao nht ca btn nhit v khi nc

cha y c thgy ra hin tng ng bng sau khi khi ng.

8.2.4.3 Bgim p khng c gn vo bphn ca ng ctrkhi c quy nh r bi nh sn

xut v phi c lp theo cc hng dn c khuyn co ca nh sn xut.

8.2.5 Bchha kh

8.2.5.1 Bchha kh phi c lp chc chn v phi c chu c khi lng ca chnh

n v cc lc tc ng khc.

8.2.5.2 Khng c lp blc khng kh pha sau bchha kh.CH THCH: Mt sbchho kh khng thch hp vi CNG. Cn tham kho khuyn co ca nh sn xut vvn ny.

8.2.6 Hthng chuyn i nhin liu kp

8.2.6.1 Hthng nhin liu kp c nh ngha l mt hthng c lp vn hnh vi CNG m

khng cn thay i g thm. Nhng hthng ny c thl mt trong 2 loi sau:

8.2.6.1.1 Kiu n nhin liu

Vn hnh bng CNG hoc mt snhin liu la chn (v dnhxng).

8.2.6.1.2 Kiu ng nhin liu


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Vn hnh mt phn bng nhin liu CNG v mt phn bng nhin liu la chn (nhdiesel), hoc ch

c nhin liu thay th(diesel).

8.2.6.2 Thit bxp ph

Thit bxp phphi c lp trn ng bm nhin liu hoc gia van ngt tng trn ng

nhin liu lng ti bchho kh trn cc phng tin c lp hthng nhin liu kp sdng nhinliu xng v kh. Thit bxp khng cn lp trn ng bm nhin liu c thit bxp ph.

8.2.6.3 Thit biu khin la chn nhin liu

Phng tin phi c thit biu khin la chn nhin liu, thit bny phi c ti thiu ba v tr la

chn, c nh du r rng la chn mt trong hai nhin liu. Thit biu khin la chn c

t v tr thun tin gip ngi li xe iu khin c d dng. i vi cc phng tin lp bm

nhin liu in tth c thchp nhn cng tc chuyn c hai vtr.

8.2.6.4 Kiu n nhin liu

8.2.6.4.1 Hthng la chn nhin liu c lp km theo thit bngt. Thit bny c nhim vngt

ng cung cp nhin liu la chn ti ng ckhi khng dng nhin liu ny na.

8.2.6.4.2 Nu thit bngt l van ngt in tth van ny phi c lp gia bm nhin liu v b

chho kh. Van phi c lp chc chn trng lng ca van khng tc ng ln bt kbphn

no ca bchho kh hoc cc ng nhin liu.

CH THCH: Cc van ngt in tkhng c lp trn ng ctrkhi c quy nh r rng bi nh sn xut.

8.2.6.4.3 Khi thit bngt c lp cch xa ng cth phi sdng ng mm c di ph hp

cung cp sdi chuyn theo chuyn ng ng c. Trong tt ccc trng hp, thit bphi c lp

vtr c bo vthch hp trnh hhng do va chm v phi cch xa thit bc in p cao.

8.2.6.4.4 Khi ng mm c sdng lp t th ng mm phi l ng mm c gia cv chto

sdng cho loi nhin liu la chn v phi chu c nhit bn ngoi ln ti 100 oC. ng ng

kim loi phi c gia cng lin kt vi ng mm bng cch buc hoc lm loe u ng v ng

mm phi c gitrn ng ng bi cc ai kp ng mm thch hp. Cn phi m bo rng u

ng ng khng c mp sc nhn c th lm t ng mm. ng mm phi c dn cch xa ccngun nhit (nhhthng kh xhoc thn ng c) hoc c bo vbng tm chn thch hp.

8.2.6.5 Kiu ng nhin liu

Khng c yu cu c bit i vi hthng chuyn i ny.

8.2.7 ng ho p

8.2.7.1 ng ho p chp sut trong bnh cha CNG phi c lp vtr dnhn nht i vi

ngi vn hnh. Thit bny c thc lp bgim p hoc v tr np nhin liu v tt nht l

trong khoang ng c.


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8.2.7.2 My o phhoc my o in tc c lp trong bung li, quy nh rng bt kmy o

no nhvy phi cch ly kh tbnh cha hoc ng ng ngn chn kh r rvo khoang chnh.

8.3 Lp t

Thit biu khin CNG phi:

8.3.1 c lp nhng vtr c thtip cn kim tra, bo dng v iu chnh nh k;

8.3.2 c gn chc chn v bo vthch hp trnh c hng hc do va chm;

8.3.3 Cch xa hthng kh xca ng choc c che chn bng tm kim loi;

8.3.4 Trnh t gn bt kthit bin no c thpht tia la.

8.4 Dy in

8.4.1 Tt ccc dy in phi c lp t chnh xc, cun bng, kp hoc t trong ng dc theochiu di dy.

8.4.2 Cc loi dy cp in phi ph hp vi yu cu ca tiu chun NZS 6403, c bit ch ti tit

din ngang ca dy dn (c xc nh bi dng in) v cch in (c xc nh bi nhit ).

9 Gn nhn

9.1 Nhn nhn bit

Nhn nhn bit phi c lp trong khoang ng cv phi cha cc thng tin sau:

9.1.1 CNG;

9.1.2 Snhn bit bnh cha;

9.1.3 Ngy lp t;

9.1.4 Tng dung tch lp t;

9.1.5 Ngy kim tra li sau cng;

9.1.6 Sng k ca phng tin.

9.2 Du nhn bit

9.2.1 Cc phng tin sdng hthng nhin liu CNG phi c du nhn bit. Du hiu nhn bit

phi l hnh vung kch thc 80 mm 80 mm v c mu trng. Ch "NGV phi c t v tr

trng tm, bng phng chArial 67 c chiu cao khng nhhn 20 mm v c mu en. Du phi c

vin rng 1 mm mu en, song song v cch mp ngoi cng 5 mm bn trong. Kch thc 80 mm

c o tmp ngoi cng (xem Hnh 5).


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9.2.2 Du hiu nhn bit phi c gn vtr thng ng gn vi bin sxe khi c thv trong mi

trng hp c thnhn thy r rng ti thiu tgc 120o; 60ohai bn ng trc chnh ca phng

tin, pha trc v sau, v tcao 1,75 m tmt t khong cch t1 m ti 20 m.

Du hiu phi c gn cnh ti mi thi im, phi trng thi tt, v hnh dng, mu sc v ch

phi c thnhn bit ddng.9.2.3 Cc du hiu cho cc mc ch ch khc nhc yu cu trong 8.2.3 v 9.1 phi c chiu

cao ca chkhng nhhn 4 mm i vi tn, m thoc ch v chiu cao 3 mm cho cc chdn.

D

0,9D mina)

D 0,9D min

b)

D

0,9D min

c)

Hnh 3 Cc kiu lp t in hnh

a) b)

Hnh 4 Cc kiu lp khng c chp nhn

Ti thiu 20 mm

80mm

80mm

NGV

Hnh 5 Du hiu nhn bit_________________________


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Transcript of 43-2009 Yeu Cau Ki Thuat Lap Dat Nhienlieu CNG