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 esilungelelanisiweyo kufuneka siqwalaselwe.Xa i-P ≥ 15MPa, i-general single-end balanced structure inzima ukuhlangabezana neemfuno zokutywinwa, ngeli xesha. ingasetyenziswa kuthotho multi-terminal seal.
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 zombini ziphezulu, 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 ngokuqhelekileyo ekhethiweyo irabha nitrile O-ring; T phakathi -50 — + 150 ℃, ngokwamandla e-corrori eendaba, ukhetho irabha fluorine, irabha abicah okanye PTFE ukupakisha umsesane wokuzalisa ziyafumaneka.Xa ubushushu bungaphantsi kwe -50 okanye ngaphezulu kwe-150 ℃, irabha kunye ne-polytetrafluoroethylene iya kuvelisa i-embrittlement yobushushu obuphantsi okanye ukuguga kobushushu obuphezulu, ngeli xesha ingasetyenziswa intsimbi yentsimbi. iqondo lobushushu kwibala lokutywina, kwaye amanyathelo okupholisa ahambelanayo kufuneka athathwe.
Okwesibini, ukhetho ngokweempawu zemidiya:
I-Corrosive medium ebuthathaka, ihlala isetyenziselwa itywina eyakhelwe-ngaphakathi, isiphelo sombuso wamandla kunye nesalathiso sokuvuza kweendaba kunengqiqo ngakumbi xa kuthelekiswa nohlobo lwangaphandle. Kwimithombo yeendaba eyomeleleyo eyonakalisayo, kuba ukukhetha izinto zasentwasahlobo kunzima kakhulu, ungasebenzisa. yangaphandle okanye i-polytetrafluoroethylene ivuthela isitywina somatshini, kodwa ngokuqhelekileyo isebenza kuphela uluhlu lwe-P ≤ 0.2-0.3MPa.Kulula ukukhazimlisa, kulula ukuqinisa kunye ne-viscosity medium, kufuneka isebenzise isakhiwo esijikelezayo sasentwasahlobo enye. iya kubangela intshukumo encinci yembuyekezo ye-axial yasentwasahlobo ivalwe.Imithombo yeendaba evuthayo, eqhumayo, enetyhefu, ukuze kuqinisekiswe ukuba i-media ayivuzi, isakhiwo esinesiphelo esiphindwe kabini kunye ne-sealant (ulwelo olulodwa) kufuneka lusetyenziswe.
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 esebenza ngokufanelekileyo, ubungakanani betywina kunye nendawo yofakelo luhlala lwenziwa iimfuno ezingqongqo kakhulu. Omnye umzekelo yinkwili kwimpompo yokuhambisa amanzi, kwiinkwili kunye nokuhla, uxinzelelo luyahluka kakhulu. , ulwakhiwo olusemgangathweni alunakukhethwa rhoqo, kodwa kufuneka luyilwe ngokukodwa kwiimeko ezithile zokusebenza, kwaye luthathe amanyathelo ayimfuneko.
Ixesha lokuposa: Aug-20-2021