Aug 03,2021
Ukhetho lohlobo lwesakhiwo setywina lomatshini linyathelo elibalulekileyo kwinkqubo yoyilo, kufuneka aphande kuqala:
Iiparamitha ze-1.Working -Uxinzelelo lweMedia, ubushushu, ububanzi be-shaft kunye nesantya.
2. Iimpawu eziPhakathi - ugxininiso, i-viscosity, i-causticity, kunye okanye ngaphandle kwamaqhekeza aqinileyo kunye nokungcola kwefiber, nokuba kulula ukukhupha okanye i-crystallization.
3. Iimpawu zokusebenza zomamkeli kunye neemeko zokusingqongileyo - umsebenzi oqhubekayo okanye oqhubekayo; Umamkeli ufakwe kwigumbi okanye uvele;Iimpawu zeatmosphere engqongileyo kunye notshintsho lobushushu.
4. Inginginya yesitywina ukuvumela ukuvuza, isikhokelo sokuvuza (ukuvuza kwangaphakathi okanye ukuvuza kwangaphandle) iimfuno; Iimfuno zobomi kunye nokuthembeka.
5. Umamkeli kubungakanani bezithintelo zesakhiwo setywina.
6. Ukusebenza kunye nokuzinza kwenkqubo yokuvelisa.
Okokuqala, ngokweeparamitha zokusebenza P, V, T ukhetho:
Apha u-P luxinzelelo oluphakathi kumngxunya wetywina. Ngokuxhomekeke kubungakanani bexabiso le-P, kunokumiselwa ekuqaleni ukuba kukhethwe ulwakhiwo olulungeleleneyo kunye nomgangatho wokulinganisela. Kwi-viscosity ephezulu ephakathi, i-lubricity elungileyo, p ≤ 0.8MPa, okanye i-viscosity ephantsi, i-lubricity embi ye-medium, p ≤ 0.5MPa, ngokuqhelekileyo isebenzisa isakhiwo esingalinganiyo.Xa ixabiso le-p lidlula uluhlu olungentla, isakhiwo esinokulinganisela kufuneka siqwalaselwe.Xa i-P ≥ I-15MPa, ulwakhiwo olulungeleleneyo olunesiphelo esinye ngokubanzi kunzima ukuhlangabezana neemfuno zokutywinwa, ngeli xesha linokusetyenziswa kuthotho lwesitywina se-multi-terminal.
U-U lisantya esijikelezayo somndilili wedayamitha yomphezulu wokutywina, kwaye imisela ukuba into eelastiki ijikeleza ne-axis ngokwexabiso lexabiso le-U, esebenzisa uhlobo lwentwasahlobo olujikelezayo okanye isakhiwo esilayishwe entwasahlobo. Ngokubanzi U. ngaphantsi kwe-20-30m / s ingasetyenziselwa ukujikeleza kohlobo lwentwasahlobo, iimeko zesantya esiphezulu, ngenxa yomgangatho ongalinganiyo weendawo ezijikelezayo zikhokelela ngokulula kwi-vibration enamandla, kungcono. ukusebenzisa i-spring static structure.Ukuba ixabiso le-P kunye ne-U liphezulu, qwalasela ukusetyenziswa kwesakhiwo se-hydrodynamic.
I-T ibhekiselele kwiqondo lokushisa eliphakathi kwigumbi elitywiniweyo, ngokobungakanani be-T ukumisela izinto ezincedisayo zokutywina, indlela yokupholisa umphezulu wokutywina kunye nenkqubo yayo encedisayo.Ubushushu T ngexesha loluhlu lwe-0-80 ℃, iringi encedisayo idla ngokukhethwa irabha ye-nitrile O-ring; T phakathi kwe -50 — +150 ℃, ngokokomelela kwamajelo eendaba, ukhetho lwe irabha ye-fluorine, irabha ye-silicone okanye i-PTFE yokupakisha i-filler ring ziyafumaneka.Xa ubushushu bungaphantsi kwe-50 okanye ngaphezulu kwe-150 ℃, irabha kunye ne-polytetrafluoroethylene ziya kuvelisa ubushushu obuphantsi okanye ukuguga kobushushu obuphezulu, eli xesha lingasetyenziselwa i-metal bellows structure.Xa i-turbidity ye-medium iphezulu kune-80 ℃, ngokuqhelekileyo kuyimfuneko ukuyiqwalasela njengobushushu obuphezulu kwintsimi yokutywina, kunye namanyathelo okupholisa angqinelana nawo kufuneka athathwe.
Okwesibini, ukhetho ngokweempawu zemidiya:
I-Corrosive medium weak, idla ngokusebenzisa itywina eyakhelwe-ngaphakathi, isiphelo selizwe lamandla kunye nesalathiso sokuvuza kweendaba kunengqiqo ngakumbi xa kuthelekiswa nohlobo lwangaphandle. Kwimithombo yeendaba eyomeleleyo, kuba ukukhetha izinto zasentwasahlobo kunzima kakhulu, ungasebenzisa. yangaphandle okanye i-polytetrafluoroethylene ivuthela isitywini soomatshini, kodwa ngokuqhelekileyo isebenza kuphela uluhlu lwe-P ≤ 0.2-0.3MPa.Kulula ukukhazimlisa, kulula ukuqiniswa kwaye kuphakamileyo. i-viscosity medium, kufuneka isebenzise i-spring rotary structure enye.Ngenxa yokuba imithombo emincinci ivalwe ngokulula ngezinto eziqinileyo, imidiya ye-viscosity ephezulu iya kubangela intshukumo encinci yembuyekezo ye-axial yasentwasahlobo ivaliwe.Imithombo evuthayo, eqhumayo, enetyhefu, ukuze kuqinisekiswe ukuba imidiya ayivuzi, a isakhiwo esinesiphelo esiphindwe kabini kunye ne-sealant (i-solation liquid) kufuneka isetyenziswe.
Ngokwezi parameters zokusebenza ezingentla kunye neempawu zemidiya yesakhiwo esikhethiweyo ihlala iyinkqubo yokuqala kuphela, ukuzimisela kokugqibela kufuneka kwakhona kuthathele ingqalelo iimpawu zomamkeli kunye nezinye iimfuno ezikhethekileyo zokutywinwa. Umzekelo, umamkeli enqanaweni ngamanye amaxesha ukuze ufumane indawo esebenzayo, ubungakanani betywina kunye nendawo yofakelo luhlala lwenziwa iimfuno ezingqongqo kakhulu. Omnye umzekelo yinkwili kwimpompo yokuhambisa amanzi, kwiinkwili kunye nokuhla, uxinzelelo. Kwezi meko, ulwakhiwo olusemgangathweni alunakunyulwa rhoqo, kodwa kufuneka luyilwe ngokukodwa kwiimeko ezithile zokusebenza, kwaye luthathe amanyathelo ayimfuneko.
Ixesha lokuposa: Aug-20-2021