201 202 310S 304 316 Yakashongedzwa yakakwenenzverwa yakakwenenzverwa yakarukwa simbi isina tsvina mugadziri wepombi
Classification ye threaded pipes:
NPT, PT, uye G ese tambo dzepombi.NPT ndeye 60 ° taper pombi shinda inova yeAmerican standard uye inoshandiswa kuNorth America.Miyero yenyika inogona kuwanikwa muGB/T12716-2002m.
PT ndeye 55 ° yakavharwa tapered pipe thread, inova mhando yeWyeth thread uye inonyanya kushandiswa munyika dzeEurope.Taper ndi1:16.Miyero yenyika inogona kuwanikwa muGB/T7306-2000.(Inonyanya kushandiswa mukupisa kwepamusoro, high pressure systems uye lubrication systems)
G is a 55° non-thread sealing pombi shinda, inova rudzi rweWyeth shinda.Yakanyorwa seG inomirira cylindrical thread.Mitemo yenyika inogona kuwanikwa muGB/T7307-2001 (inonyanya kushandiswa kumvura uye gasi mapaipi ane kudzvanywa kuri pazasi 1.57MPa).G izita rakajairika reshinda yepombi, inowanzozivikanwa sepombi denderedzwa.Kureva kuti shinda inogadziriswa ne cylindrical surface.ZG inowanzozivikanwa sepombi cone, kureva kuti, shinda inogadziriswa neconical surface, uye chiyero chenyika chakanzi Rc (cone inner pipe thread).Dzese G shinda neRp shinda dzine 55° cylindrical pombi.Rp izita rekodhi reISO.
Iyo GB chikamu cheChina chiyero chakaenzana neyepasi rose standard ISO.Mashoko acho ndeaya:
1. Kukwana kwecylindrical shinda yemukati (Rp) uye shinda yekunze yakanyungudutswa (R1), inonzi "column/cone fit", nhamba yenyika yangu GB/T7306.1-2000, inotora zvakafanana chiyero chepasi rose ISO7-1 : Iyo "column/cone fit" muna 1994 "tambo yepombi yakavharwa neshinda";
2. Kukwana kweshinda yemukati yakanyungudutswa (Rc) uye shinda yekunze yakanyungudutswa (R2), inonzi "cone/cone fit", nhamba yenyika yedu iGB/T7306.2-2000, iyo inotora zvakafanana chiyero chepasi rose ISO7- 1 :Iyo "cone/cone fit" muna 1999 "pombi yakavharwa neshinda";
3. Kukwana kwe cylindrical internal thread (G) uye cylindrical yekunze thread (G) inonzi "column / column fit".Nhamba yakajairwa yenyika yedu ndeye GB/T7307-2001 "55 ° isina kuvharwa pombi thread".Ichi chiyero chakafanana Chikamu chekutanga cheyepasirese chiyero ISO228-1: 1994 "Isina-shinda-yakavharwa pombi tambo" ndeye "Dimensional tolerances uye mamaki", asi miyero yenyika yangu haikurudzire kushandiswa kwetambo dzakavharwa dzepombi uye tambo dzepombi dzisina kuvharwa. , kureva (Rp /G);
1. Mvura inotonhora uye madhiraini masisitimu anotora tambo yakasungirirwa kana pombi dhayamita iri pasi kana kuenzana ne50mm.
2. Pipe threading muchina unoshandiswa pakugadzira shinda uye yakakosha kupinza muchina mafuta inoshandiswa pakuzora.Mvura kana zvimwe zvinwiwa hazvibvumidzwe kutsiva mafuta ekuzora.
3. Mafuta emutobvu uye waya yehemp anoshandiswa kuvhara nekurongedza pombi, uye tepi yeTeflon inoshandiswa kubatanidza nemidziyo.Hazvibvumirwi kuunza kurongedza mupombi paunenge uchiomesa thread.
4. Kucheka kwepombi kunofanira kuitwa nekucheka kana hacksaw.Okisijeni acetylene kana muchina wekucheka haubvumidzwe.Kutsauka kwekutenderera kwechiso chekupedzisira chekucheka hakufaniri kuva mukuru kudarika 1% yekunze kwepaipi yepombi, uye haifaniri kudarika 3mm.
5. Kuti ive nechokwadi chekushomeka kwemadziro emutsi weshinda, inofanirwa kutariswa mukati medenderedzwa remukati mekupedzisira kwechikamu chepombi, uye axial tambo kutsauka uye axial kurerekera kwetambo yepombi inofanira kunyatsodzorwa, nekuti. ingave iri axial parallel deviation kana axial tilt kutsauka, Zvose zvichaderedza zvakanyanya kukora kwepombi rusvingo, nokudaro kuderedza simba repombi.
Kutsauka kunobvumidzwa kwepombi shinda yekugadzirisa
Zita dhayamita (mm) Parallel kutsauswa (mm) Kutsaukira kutsauka (mm)
1 ≤32 0.3 0.3/100
2 40~65 0.4 0.4/100
3 80~100 0.5 0.5/100
4 125~150 0.6 0.5/100
6. Mushure mokunge pombi ine thread yakagadziriswa, tarisa iyo ne threaded yekuyeresa mudziyo.Kana pane zvigadziro zvepombi yezvakatsanangurwa zvakafanana, zviri nani kuenzanisa zvigadziro zvepombi.Chiyero chekuregedzera chinongoda kupindirwa mukati neruoko, uye hachifanirwe kunge chakanyanya kusununguka kana pombi dzakaiswa mukati. Kana ukanamatira, unogona kugogodza pombi nembambo yehuni.Kana iyo ichiri kutadza kupindirwa mukati kana sikuruu ikava yakasimba, inogona kubviswa chete.Kurovera nechisimba hakubvumidzwe.
7. The threaded thread inofanira kuva yakachena uye nguva dzose.Tambo yakadambuka kana kushaikwa haifanire kudarika 10% yenhamba yese yeshinda.Iyo galvanized layer iri pamusoro pekunze kwepombi inofanira kuchengetedzwa.Nzvimbo dzakakanganisika dzemunharaunda dzinofanirwa kurapwa ne-anti-corrosion treatment.
8. Kubatanidza tambo Mudzi weshinda yepombi mushure mekugadzwa kwepombi unofanirwa kuve ne 2 ~ 3 tambo dzakafumurwa, uye iyo yakawandisa hemp waya inofanira kucheneswa uye kurapwa ne-anti-corrosion treatment.