Khangela ivalve, ekwabizwa ngokuba yiindlela enye khangela ivalve. Umsebenzi walo oyintloko kukuthintela ukubuya kwe-medium kunye nokukhusela ukusebenza ngokukhuselekileyo kwezixhobo kunye nenkqubo yombhobho.Iivalvu zokujonga amanzizisetyenziswa kakhulu petroleum, ishishini imichiza, unyango lwamanzi, amandla ombane, metallurgy kunye nezinye iinkalo.

Kukho iintlobo ezininzi zeevalvu zokutshekisha, ngokwesakhiwo esahlukileyo kunye nomgaqo wokusebenza, unokwahlulwa lube uhlobo lokuphakamisa, uhlobo lwe-swing,ivelufa yokujonga ibhabhathane, uhlobo lwebhola njalo njalo. Phakathi kwabo, iphakamisa ivalve yokujongayeyona nto ixhaphakileyo, ene-valve flap yangaphakathi enokuthi iphakanyiswe, kwaye xa i-medium ihamba ukusuka kwi-inlet ukuya kwi-outlet, i-flap ye-valve ivuleke phezulu; Xa i-medium igeleza kwicala elingasemva, i-disc ivaliwe ukukhusela umva.

Ukuze kuqinisekiswe ukusebenza okuqhelekileyo kweivalve yokukhangela engenasicikunye nokwandisa ubomi bayo benkonzo, ukugcinwa kwemihla ngemihla kubaluleke kakhulu. Nalu ulwazi lolondolozo lwemihla ngemihla lweevalvu zokutshekisha:

1.Ukuhlolwa rhoqo

Hlola ukubonakala kwevalve yokukhangela rhoqo ukuze ubone ukuba kukho iintanda, ukuguqulwa, ukubola kunye nezinye izinto. Ngexesha elifanayo, khangela itywina le-disc kunye nesihlalo ukuze uqinisekise ukuba akukho kuvuza.

2.Ukucoca

Ukucoca rhoqo ngaphakathi nangaphandle kwevalve yokutshekisha ukususa ukungcola kunye nokungcola. Xa ucoca, i-agent engathathi hlangothi yokucoca kufuneka isetyenziswe ukuphepha ukusetyenziswa kwezinto ezinobungozi ezifana ne-asidi eqinile kunye ne-alkali.

3.Buyisela iindawo ezonakalisiweyo

Ukuba i-disc ye-valve, isihlalo kunye nezinye iindawo zevalve yokukhangela zifunyenwe zonakaliswe okanye zigqithise kakhulu, kufuneka zitshintshwe ngexesha. Faka endaweni kunye neenkcukacha ezifanayo kunye neemodeli zamacandelo okuqala ukuqinisekisa ukuba ukusebenza kwevalve akuchaphazeleki.

4.Ukuthambisa

Kwezinye iivalvu zokutshekisha ezifuna ukuthanjiswa, umlinganiselo ofanelekileyo we-oyile yokuthambisa okanye igrisi kufuneka yongezwe rhoqo ukugcina isiqu kunye nesihlalo sithanjiswa kakuhle.

Unyango lwe-5.Anti-corrosion

Kwivalve yokukhangela umgca osetyenziswa kwindawo enobungozi, kufuneka kuthathwe amanyathelo achasene ne-corrosion ahambelanayo, njengokugquma i-anti-corrosion layer kunye nokukhetha izinto ezixhathisayo.

Ngokusebenzisa le milinganiselo yokugcinwa kwemihla ngemihla engentla, unokuqinisekisa ukusebenza okuqhelekileyo kwe-valve yokukhangela kunye nokwandisa ubomi benkonzo, kwaye unikeze isiqinisekiso esinamandla sokhuseleko lwezixhobo kunye nenkqubo yombhobho.