Amashubhu ensimbi angenamthungo futhi ahlanganisiwe adlala indima ebalulekile njengezingxenye eziyisisekelo zemboni yanamuhla.
Imininingwane yala mashubhu ichazwa kakhulu ububanzi bangaphandle (OD), ubukhulu bodonga (WT) kanye nobude (L), kuyilapho ukubala isisindo seshubhu lensimbi kusekelwe kulezi zilinganiso zobukhulu kanye nobuningi (ρ) bezinto zokwakha. Ekuhleleni iphrojekthi, ukulawulwa kwezindleko kanye nokuthutha, ukubala okunembile kwesisindo sepayipi lensimbi kubalulekile. Lesi sihloko sinikeza izindlela ezintathu zokubala isisindo seshubhu lensimbi futhi sibonisa ukuthi ungazisebenzisa kanjani ngezibonelo ezisebenzayo.
Ukubalwa Okuyisisekelo Kwesisindo Sepayipi
Isisindo sepayipi lensimbi singalinganiswa ngokubala ivolumu yalo ephindaphindwe ngobuningi bensimbi.
Kwamapayipi ensimbi ayindilinga (kufaka phakathi amapayipi angenamthungo kanyeamapayipi ensimbi ahlanganisiwe), isisindo sibalwa kanje:
Isisindo(kg)=×(OD)2-(OD-2×WT)2)×L×ρ
ODububanzi bangaphandle bepayipi lensimbi ngamamitha (m);
WTukujiya kodonga lwepayipi lensimbi ngamamitha (m);
Lubude bepayipi lensimbi ngamamitha (m);
ρUbuningi bensimbi, ngensimbi yekhabhoni evamile, cishe buyi-7850kg/m3.
I-algorithm elula: amayunithi asebukhosini
Isisindo（lb/ft)=(OD (ku)−WT (ku))×WT (ku)×10.69
lapho u-10.69 kuyisici esibalwa kusukela ekubuneni kwensimbi kanye nokuguqulwa kweyunithi okusetshenziselwa ukuguqula ubukhulu kusukela kumasentimitha kuya kumakhilogremu ngefithi ubude.
Izibalo Zezibonelo
Uma sicabanga ngesigaba seIpayipi lensimbi le-ERWngobubanzi bangaphandle obungamasentimitha ayi-10 kanye nobukhulu bodonga obungamasentimitha angu-0.5, bala isisindo ngonyawo ngalunye lobude: Isisindo (lb/ft) = (10-0.5) x 0.5 x 10.69
Isisindo ngefithi ubude baleli payipi lensimbi singamakhilogremu angu-50.7775.
I-algorithm elula: amayunithi e-metric
Isisindo (kg)=(OD−WT)×WT×L×0.0246615
I-OD ububanzi bangaphandle bepayipi lensimbi, ngamamitha (mm);
I-WT ubukhulu bodonga lwepayipi lensimbi ngamamitha (mm);
L ubude bepayipi ngamamitha (m);
I-0.0246615 isekelwe ekubuneni kwensimbi (cishe 7850 kg/m³) kanye ne-unit conversion factor.
Izibalo Zezibonelo
Ake sithi sine-ipayipi lensimbi elingenamthungoenobubanzi bangaphandle obungu-114.3 mm, ubukhulu bodonga obungu-6.35 mm, kanye nobude obungu-12 m. Bala isisindo sepayipi usebenzisa ifomula elula engenhla:
1. Bala umehluko phakathi kobubanzi nobukhulu bodonga: 114.3 - 6.35 = 107.95. 2.
2. Bala isisindo ngokufaka ifomula esikhundleni sayo: 107.95 × 6.35 × 12 × 0.0246615. 3.
3. Umphumela uba: 202.86
Ngakho-ke, isisindo esiphelele sepayipi singaba ngu-202.86 kg.
Ama-coefficient angu-10.69 kanye no-0.0246615 kufomula asekelwe ekubuneni okumaphakathi kwensimbi. Izinhlobo ezahlukene zensimbi (isb. insimbi engagqwali, insimbi ye-alloy, njll.) zingase zibe nobukhulu obuhlukene futhi izici kumele zilungiswe ngokufanele.
Lezi zibalo zinikeza isilinganiso sesisindo se-ngaphandle komthungokanye namapayipi ensimbi ahlanganisiwe. Ngenxa yobuningi bezinto zokwakha obuhlukahlukene, ukubekezelelana kokukhiqiza, nezinye izici, isisindo sangempela singahluka.
Isisindo sangempela singahluka kuye ngokubekezelelana kokukhiqiza kanye nobuningi bezinto ezibonakalayo, ngakho-ke le fomula iyisilinganiso. Ukuze kubalwe isisindo ngokunembile, kunconywa ukuthi ubhekisele kudatha enikezwe umenzi noma ukuthi uthathe izilinganiso zangempela.
Ukuze kutholakale izibalo zobunjiniyela ezinembile noma izingcaphuno zezentengiselwano, kunconywa ukuthi kusetshenziswe idatha enemininingwane eyengeziwe noma ukuthi kuxhunyanwe nabaphakeli bamapayipi ensimbi ukuze bathole ulwazi olunembile ngesisindo.
Ukubalwa kwesisindo samapayipi kuyingxenye eyisisekelo yokuklama kobunjiniyela nokulawula izindleko, kanye nokuqonda okufanele kanye nokusetshenziswa kwalezi zibalo. Le ndlela yokubala iyasebenza kumapayipi ensimbi angenamthungo anobukhulu bodonga obuncane. Endabeni yamapayipi ensimbi angenamthungo odongeni obukhulu kakhulu, kungabalwa okuyinkimbinkimbi kakhulu.
amathegi: isisindo sepayipi, ipayipi lensimbi, elingenamthungo, elihlanganisiwe.
Isikhathi sokuthunyelwe: Feb-27-2024