Chuong 1b cac phuong phap noi ong.pdf

8/11/2019 Chuong 1b cac phuong phap noi ong.pdf

1/10

CC PHNG PHP NI NG

Cc vt liu khc nhau s c cc phng php ningkhc nhau

ivithp carbon c 3phngphp csdng

rngri: Ningbnghn ng(Butt-Weld connection)

Socket-Weld connection

Ningbngren (Threaded connection)ivigang c 2phngphp ni

Spigot

Hubless


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1.5 Ni ng thp carbon

1.5.1 Phng php hn (Butt-Weld connection)


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c im Hai ungcvt mp hnh cn (gc cn

thngl 30

Khong cch hai ung trc khi hn bng1/16,hai ungcp chtvinhau trong

qu trnh hn, mihn shnh thnh cphabn trong cang. khcphcshnh thnh mihn bn trong

ng yu cu khong cch ng l 1/8, trongqu trnh hn hai ungkhng cp vonhau.


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1.5.2 Socket-Weld connection

c im:

Mtucangphicctvung gc vi

trccang. Trckhi hn phimbokhongcch t

ungnvng chnl 1/8?


5/10


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1.5.3 Ni ng bng ren (Threaded connection)

c im

u ng phi c ren

Thng dng cho ng nh hn 3

Kh nng bt kn km hn so vi 2 phngphp trn.


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1.6 Ni ng gang (Joining Cast Iron pipe)1.6.1 Hub and Spigot

c im:

Mt u ng c m rng, mt u ng c ctvung gc vi trc ng

Cho php hai trc ng lch nhau n 5 m vnm bo kn kht


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1.6.2 Hubless Cast iron pipe

c

im

Hai u ng cctphng

Chiu dy ca haing ni phi bngnhau

Khch thc ngtrong khong 1.1/2

n10


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1.7 K hiu ng v v tr ni trn bn v

Chuong 1b cac phuong phap noi ong.pdf

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