Ukuqonda Iingenelo ze-ASTM A139 Spiral Steel Pipe kwiMibhobho yeGesi yendalo engaphantsi komhlaba

Yazisa:

Xa kufikwa ekuthuthweni kwegesi yendalo, ukubaluleka kwemibhobho engaphantsi komhlaba akunakugxininiswa kakhulu. Le mibhobho iqinisekisa ukuhanjiswa ngokukhuselekileyo nangokufanelekileyo kwala mandla abalulekileyo emakhaya, kumashishini nakwimizi-mveliso. Ukuqinisekisa ukuba le mibhobho ihlala ixesha elide, ithembekile kwaye iqinile, ukusetyenziswa kwezinto ezisemgangathweni ophezulu kubalulekile. Phakathi kweendlela ezininzi ezikhoyo,I-ASTM A139Umbhobho wentsimbi ejikelezayo ubonakala njengokhetho olukhethekileyo. Kule bhlog, siza kujonga kwiimpawu kunye neenzuzo ezenza i-ASTM A139 ibe yinto ekhethwayo kwimibhobho yegesi yendalo engaphantsi komhlaba.

Ipropati yoomatshini

Ukwenziwa kweeKhemikhali

Uvavanyo lwe-Hydrostatic

Ubude bombhobho ngamnye buya kuvavanywa ngumvelisi kuxinzelelo lwe-hydrostatic oluya kuvelisa eludongeni lombhobho uxinzelelo olungaphantsi kwama-60% wamandla aphantsi okuvelisa kubushushu begumbi. Uxinzelelo luya kugqitywa yile equation ilandelayo:
P=2St/D

Utshintsho Oluvumelekileyo Kubunzima Nobukhulu

Ubude bombhobho ngamnye buya kulinganiswa ngokwahlukeneyo kwaye ubunzima bawo abuyi kwahluka ngaphezu kwe-10% ngaphezulu okanye i-5.5% phantsi kobunzima bawo obuqikelelwayo, obubalwe kusetyenziswa ubude bawo kunye nobunzima bawo ngobude beyunithi nganye.
Ububanzi bangaphandle abuyi kwahluka ngaphezu kwe-±1% ukusuka kububanzi obuqhelekileyo bangaphandle.
Ubukhulu bodonga nangaliphi na ixesha abuyi kuba ngaphezulu kwe-12.5% ​​phantsi kobukhulu bodonga obuchaziweyo.

Ubude

Ubude obungacwangciswanga obunye: 16 ukuya kwi-25ft (4.88 ukuya kwi-7.62m)
Ubude obuphindwe kabini obungacwangciswanga: ngaphezulu kwe-25ft ukuya kwi-35ft (7.62 ukuya kwi-10.67m)
Ubude obufanayo: umahluko ovumelekileyo ±1in

Iphela

Iipayipu mazifakelwe iziphelo ezingenanto, kwaye iziphelo ezisemaphethelweni mazisuswe.
Xa isiphelo sepayipi esichazwe njengesiphelo se-bevel, i-engile mayibe ngama-30 ukuya kuma-35 degrees

I-ASTM A139: Ukhetho lweUmbhobho weGesi yendalo ongaphantsi komhlabaimigca:

1. Amandla nokuqina:

I-ASTM A139umbhobho wentsimbi ejikelezayoyaziwa ngokuba namandla ayo agqwesileyo okutsalwa kunye namandla okutsha. Ezi mpawu zibalulekile kwimibhobho yegesi yendalo engaphantsi komhlaba kuba ihlala ijongene neemeko ezahlukeneyo zoxinzelelo lokusingqongileyo kunye nolwephantsi komhlaba. Uyilo olujikelezayo lombhobho wentsimbi luphucula ukuqina kwesakhiwo sayo, luyivumela ukuba imelane noxinzelelo oluphezulu lwangaphandle kwaye lunciphise umngcipheko wokuvuza okanye ukuqhekeka.

2. Ukumelana nokugqwala:

Imibhobho engaphantsi komhlaba isengozini yokugqwala okubangelwa ngamanzi, iikhemikhali zomhlaba kunye nezinye izinto. Umbhobho wentsimbi ojikelezayo we-ASTM A139 usombulula le ngxaki ngokubonelela ngokumelana nokugqwala okuphezulu. Oku kungenxa yokwaleka kwayo okutyebileyo kwi-zinc, okubonelela ngomqobo okhuselayo kwizinto ezigqwalisayo, oqinisekisa ukuhlala ixesha elide kombhobho kwaye unciphisa isidingo sokugcinwa rhoqo okanye ukutshintshwa.

3. Ukudityaniswa kunye nokuguquguquka:

Umbhobho wentsimbi ojikelezayo we-ASTM A139 unokudityaniswa kakuhle, okuvumela ukuba amalungu agudileyo nasebenzayo ngexesha lokufakwa. Olu phawu luluncedo kakhulu kwiimibhobho yegesi yendalo engaphantsi komhlaba, njengoko iqinisekisa ukuthembeka kwenkqubo yemibhobho kwaye inciphisa umngcipheko wokuvuza. Ukongeza, ukuguquguquka kwemibhobho yentsimbi ejikelezayo kwenza kube lula ukwenziwa ngobude nobubanzi obahlukeneyo ukuhlangabezana neemfuno ezahlukeneyo zeprojekthi, ngaloo ndlela inceda ekusebenzeni kakuhle kweendleko kunye nokwenza ngokwezifiso.

4. Ukusebenza kakuhle kweendleko:

Enye inzuzo ebalulekileyo yokusebenzisa umbhobho wentsimbi ojikelezayo we-ASTM A139 kwimibhobho yegesi yendalo engaphantsi komhlaba kukusebenza kakuhle kweendleko. Ukuqina kwezixhobo, ukumelana nokugqwala kunye nokulula kokufakwa kwazo kunciphisa iindleko zokugcinwa kwexesha elide kunye nokutshintshwa. Ukongeza, umlinganiselo wayo ophezulu wamandla ukuya kobunzima unciphisa isidingo sezakhiwo ezixhasayo ezininzi ngexesha lokufakelwa, nto leyo ekhokelela ekongeni iindleko ngokubanzi.

5. Izinto eziqwalaselwayo malunga nokusingqongileyo:

Umbhobho wentsimbi ejikelezayo we-ASTM A139 wenziwa ngeenkqubo ezinobuhlobo nokusingqongileyo kwaye ulandela imigangatho yokhuseleko engqongqo. Iimpawu zawo ezimelana nokugqwala zinceda ekuthinteleni ukuvuza kwegesi, ekugqibeleni zinciphise impembelelo yokusingqongileyo. Ukongeza, ukuphinda kusetyenziswe intsimbi kuyenza ibe lukhetho olunobuhlobo nokusingqongileyo, nto leyo egxininisa ngakumbi iingenelo ezizinzileyo zokusebenzisa umbhobho wentsimbi ejikelezayo we-ASTM A139 kwimibhobho yegesi yendalo engaphantsi komhlaba.

Ukuququmbela:

Ukukhetha izixhobo ezifanelekileyo zemibhobho yegesi yendalo engaphantsi komhlaba kubalulekile ukuqinisekisa ukuthuthwa okukhuselekileyo, okusebenzayo nokuthembekileyo kwale mithombo yamandla ibalulekileyo. Umbhobho wentsimbi ojikelezayo we-ASTM A139 lukhetho oluhle kakhulu ngenxa yamandla awo, ukuqina kwawo, ukumelana nokugqwala, ukunyibilika, ukusebenza kakuhle kweendleko, kunye nokuqwalaselwa kwendalo. Iimpawu zawo ezikhethekileyo zenza ukuba ibe lukhetho lokuqala kwiinjineli kunye nabaphathi beeprojekthi abafuna ukwakha imibhobho yegesi yendalo engaphantsi komhlaba eya kuma uvavanyo lwexesha elide. Ngokutyala imali kwizixhobo ezisemgangathweni ezifana nombhobho wentsimbi ojikelezayo we-ASTM A139, sinokuqinisekisa isiseko sokusasazwa kwegesi yendalo esizinzileyo nesikhuselekileyo kwizizukulwana ezizayo.