Zita dhayamita uye mukati uye kunze dhayamita pamusoro spiral simbi pombi

Spiral simbi pombiimhando yepombi yesimbi inogadzirwa nekumoneredza simbi muchimiro chepombi pane imwe spiral angle (forming angle) yobva yaipinza. Inoshandiswa zvakanyanya mumapombi masisitimu emafuta, gasi rechisikigo uye kutapurirana kwemvura.

 
Nominal Diameter (DN)
Zita dhayamita rinoreva dhayamita rezita repombi, inova kukosha kwezita kwehukuru hwepombi. Kune spiral simbi pombi, dhayamita yezita inowanzova pedyo, asi haina kuenzana, iyo chaiyo mukati kana kunze kwedhayamita.
Inowanzo kuratidzwa neDN pamwe nenhamba, yakadai seDN200, iyo inoratidza kuti dhayamita yezita i200 mm simbi pombi.
Common nominal dhayamita (DN) siyana:
1. Diki dhayamita renji (DN100 - DN300):
DN100 (4 inches)
DN150 (6 inches)
DN200 (8 inches)
DN250 (10 inches)
DN300 (12 inches)

2. Medium dhayamita renji (DN350 - DN700):
DN350 (14 inches)
DN400 (16 inches)
DN450 (18 inches)
DN500 (20 inches)
DN600 (24 inches)
DN700 (28 inches)

3. Huru dhayamita renji (DN750 - DN1200):
DN750 (30 inches)
DN800 (32 inches)
DN900 (36 inches)
DN1000 (40 inches)
DN1100 (44 inches)
DN1200 (48 inches)

4. Yakawedzera dhayamita yakakura (DN1300 uye pamusoro):
DN1300 (52 inches)
DN1400 (56 inches)
DN1500 (60 inches)
DN1600 (64 inches)
DN1800 (72 inches)
DN2000 (80 inches)
DN2200 (88 inches)
DN2400 (96 inches)
DN2600 (104 inches)
DN2800 (112 inches)
DN3000 (120 inches)

OD uye ID
Kunze Diameter (OD):
OD ndiyo dhayamita yekunze kweiyo spiral simbi pombi. Iyo OD ye spiral simbi pombi ndiyo saizi chaiyo yekunze kwepombi.
Iyo OD inogona kuwanikwa nekuyera chaiko uye inowanzoyerwa mumamirimita (mm).
Mukati dhayamita (ID):
ID ndiyo yemukati dhayamita yepipe yesimbi yespiral. ID ndiyo saizi chaiyo yemukati wepombi.
ID inowanzoverengerwa kubva kuOD minus kaviri ukobvu hwemadziro mumamirimita (mm).
ID=OD-2×ukobvu hwemadziro

Yakajairika maapplication
Spiral simbi mapaipi ane akasiyana mazita madhayamita ane akasiyana maapplication munzvimbo dzakasiyana siyana:
1. Diki dhayamita spiral simbi pombi (DN100 - DN300):
Inowanzo shandiswa muinjiniya yekanzuru yepombi dzekupa mvura, pombi dzemvura, pombi dzegasi, nezvimwe.

2. yepakati dhayamita spiral simbi pombi (DN350-DN700): inoshandiswa zvakanyanya mumafuta, pombi yegasi chaiyo uye pombi yemvura yemaindasitiri.

3. hombe dhayamita spiral simbi nyere(DN750 - DN1200): inoshandiswa mumapurojekiti ekufambisa mvura kure-kure, mapaipi emafuta, mapurojekiti makuru emaindasitiri, akadai sekufambisa kwepakati.

4. super hombe dhayamita spiral simbi pombi (DN1300 uye pamusoro): inonyanya kushandiswa kuyambuka-regional kureba kureba mvura, oiri negasi pombi mapurojekiti, mapaipi epasi pemvura uye mamwe mahombe ezvivakwa zvirongwa.

Mitemo nemaitiro
Iyo yezita dhayamita uye zvimwe zvakatemwa zvespiral simbi pombi zvinowanzo gadzirwa zvinoenderana neakakodzera zviyero uye zvimiro, senge:
1. Mitemo yepasi rose:
API 5L: inoshanda kune pombi yekufambisa simbi pombi, inotaura saizi uye zvinhu zvinodiwa zvespiral simbi pombi.
ASTM A252: inoshanda kune yakarongeka simbi pombi, saizi yespiral simbi pombi uye zvinodiwa zvekugadzira.

 

2. National Standard:
GB/T 9711: inoshanda kune pombi yesimbi yekufambisa oiri uye gasi indasitiri yekufambisa, inotsanangura zvinodiwa zvehunyanzvi zvespiral simbi pombi.
GB/T 3091: inoshanda kune yakaderera-kudzvanywa kwemvura yekufambisa ine welded simbi pombi, inotsanangura spiral simbi pombi saizi uye tekinoroji zvinodiwa.