Izinkinga ezijwayelekile ekuhlolweni komlilo we-valve Ubudlelwano phakathi kosayizi we-valve nesivinini esimaphakathi
Inqubo yokukhiqiza imboni ye-petrochemical iyinkimbinkimbi, futhi izinto zokusetshenziswa, imikhiqizo eseqediwe, imikhiqizo eqediwe kanye nezinto ezisizayo ezahlukahlukene ezisetshenziswa enqubweni yokukhiqiza ziyizinto ezivuthayo neziqhumayo, okulula ukubangela umlilo nezingozi. Futhi isetshenziswe kwezinye izimo ezilula zomlilo we-valve, ngenxa yengozi engaba khona yomlilo, ngokuvamile eklanyweni layo elikhethekile, ukuze i-valve ngesikhathi esithile ngemva komlilo isenomsebenzi othile wokubeka uphawu nokusebenza kokusebenza. Ekulinganiseni ukumelana nomlilo kwamavalvu, ukuhlolwa komlilo kuyindlela ebalulekile yokuqinisekisa ama-valve. Ukuhlolwa kokumelana nomlilo kwama-valve asetshenziswa embonini ye-petrochemical kunanyathiselwe ukubaluleka okukhulu ekhaya naphesheya futhi kuye kwathuthukiswa namazinga afanele.
Izinga lokuhlola
Ngokwezimo ezihlukene zohlelo lokusebenza nemisebenzi yomkhiqizo, amazinga okuhlola umlilo we-valve nawo ahlukile, njengokuthi i-American Petroleum Institute ithuthukise i-ANSI/API607-2005 ejwayelekile yesihlalo esithambile esingu-1/4 amavalvu aphendukayo, i-API6FA-1999 yamapayipi amapayipi nama-wellheads. , kanye ne-API6FD-1995 yamavalvu okuhlola. I-International Organisation for Standardization isungule i-ISO10497-2004 ejwayelekile yokuhlolwa kokumelana nomlilo kwama-valve ahlukahlukene, futhi izwe lethu selithuthukise i-JB/T6899-1993 ejwayelekile yohlelo lokuhlola ukumelana nomlilo kanye nezidingo zendlela.
Izinkinga ezijwayelekile ekuhlolweni kokumelana nomlilo we-valve
izinhlobo
Ngesikhathi somlilo
Ukuhlolwa kwengcindezi ephansi
Ukuhlolwa kokusebenza
okunye
I-valve yebhola
I-valve yebhola entantayo
Kokubili ukuvuza kwangaphakathi nangaphandle kwesihlalo se-valve yophawu oluthambile kungase kwenzeke, futhi kungase kube nokuvuza endaweni evulekile nesiqu se-valve ngesikhathi somlilo, kuyilapho ukuvuza esihlalweni sevalvu yophawu oluqinile ngokuvamile kuncane.
Ukuvuza kwangaphakathi kungase kukhuphuke ekuhlolweni kwengcindezi ephansi ngemva kokupholisa
Ngemuva kokusebenza, ukuvuza kwangaphandle kulula ukweqa izinga, futhi indawo yokuvuza ngokuvamile ukuxhumana kwe-flange yomzimba we-valve kanye nesiqu se-valve.
I-valve yebhola engashintshi
Kokubili ukuvuza kwangaphakathi nangaphandle kwesihlalo se-valve yophawu kungase kwenzeke. Ngesikhathi somlilo, kungase kube nokuvuza ku-flange, isiqu se-valve kanye ne-vall support shaft ye-valve, kuyilapho ukuvuza esihlalweni se-valve yophawu oluqinile ngokuvamile kuncane.
Ukuvuza kwangaphakathi kungase kukhuphuke ekuhlolweni kwengcindezi ephansi ngemva kokupholisa
Ngemuva kokusebenza kokuvuza kokuhlolwa kokuvuza kwangaphandle kulula ukweqa izinga, indawo yokuvuza ngokuvamile i-valve body flange, isiqu se-valve kanye ne-shaft yokusekela ibhola.
I-valve yebhola enesakhiwo sebhola elingaguquki ingeyohlobo lokuvala olukhuphuka nomfula, futhi ukuvuza kwangaphakathi ngesikhathi sokusha kufanele kukhishwe kumthamo wokugcina amanzi emgodini womzimba we-valve.
I-valve yebhola eshiselwe ngokugcwele
Ukuvuza kwangaphakathi kulula ukuvela, futhi ukuvuza kwangaphandle kungase kuvele esiqwini
Ukuvuza kwangaphakathi kungase kukhule
Ukuvuza kwangaphandle ngokuvamile kuncane, isiqu kuphela esingavela ukuvuza kwangaphandle
I-valve yesango eliyisicaba
Ukuvuza kwangaphakathi kuncane kakhulu kweminye imikhiqizo, ukuvuza kwangaphandle ekuxhumekeni komzimba we-valve noma isiqu kungenzeka
Ukuvuza kwangaphakathi ngokuvamile kuncane
Ngemuva kokusebenza, ukuxhumana komzimba we-valve, imbobo yesiqu kanye ne-drain kujwayele ukuvuza kwangaphandle
iqhude
Ukuvuza kwe-valve yophawu oluthambile kukhulu kakhulu, akunakuqinisekiswa kahle, ukuvuza kwe-valve yophawu oluqinile kuncane
Ukuhlolwa kwengcindezi ephansi ngemuva kokupholisa ukuvuza kwevalvu ethambile yophawu ngokuvamile kukhulu, ukuvuza kwevalvu eqinile ngokuvamile kuncane.
Ngemuva kokusebenza, ukuvuza kokuhlolwa kokuvuza kwangaphandle kulula ukweqa izinga, futhi indawo yokuvuza ngokuvamile ukuxhumana kwe-flange yomzimba we-valve kanye nesiqu se-valve.
Butterfly valve
Ukuvuza kwangaphakathi kulula ukubonakala kuhlobene neminye imikhiqizo, futhi ukuvuza kwangaphandle kungase kuvele esiqwini
Ukuvuza kulula ukubonakala ekuhlolweni kwengcindezi ephansi ngemva kokupholisa
Ngemuva kokusebenza, isiqu se-valve kanye ne-shaft yokusekela kujwayele ukuvuza kwangaphandle
I-valve yomhlaba
Ukuvuza kwangaphakathi kuncane kakhulu kweminye imikhiqizo, ukuvuza kwangaphandle ekuxhumekeni komzimba we-valve noma isiqu kungenzeka
Ukuvuza kwangaphakathi ngokuvamile kuncane
Ngemuva kokusebenza, ukuvuza kokuhlolwa kokuvuza kwangaphandle kulula ukweqa izinga, futhi indawo yokuvuza ngokuvamile ukuxhumana kwe-flange yomzimba we-valve kanye nesiqu se-valve.
I-valve yokuhlola
Ukuvuza kwangaphakathi kulula ukuvela kweminye imikhiqizo, ukuvuza kwangaphandle emzimbeni we-valve nokuxhumeka kwekhava ye-valve kungase kuvele.
Ukuvuza kulula ukubonakala ekuhlolweni kwengcindezi ephansi ngemva kokupholisa
Ngemuva kokusebenza kokuvuza kokuhlolwa kokuvuza kwangaphandle kulula ukweqa izinga, indawo yokuvuza ngokuvamile ingumzimba we-valve kanye nokuxhumeka kwekhava ye-valve.
Ukuhlolwa kokumelana nomlilo kwe-valve ukulingisa ukuhlolwa kwe-valve endaweni yomlilo. Ingabonisa ngempela futhi ngokuphumelelayo ukumelana nomlilo we-valve yokuhlola. Kubaluleke kakhulu ocwaningweni lwesakhiwo sokumelana nomlilo se-valve kanye nokuhlolwa kokumelana nomlilo kwe-valve.
Ububanzi be-valve kanye nezinga lokugeleza okuphakathi phakathi kobudlelwane phakathi kwendawo yokugeleza ye-valve kanye nesilinganiso sokugeleza, ukugeleza kunobudlelwane obuqondile, futhi izinga lokugeleza nokugeleza yizinani ezimbili ezincikene. Uma izinga lokugeleza lihlala njalo, isivinini sokugeleza sikhulu, indawo yesiteshi sokugeleza ingaba yincane; Izinga lokugeleza lincane, indawo yesiteshi sokugeleza ingaba nkulu. Ngokuphambene nalokho, indawo yesiteshi sokugeleza inkulu, izinga lokugeleza lincane; Indawo yesiteshi sokugeleza incane, isivinini sayo sikhulu. Izinga lokugeleza kwe-medium likhulu, ububanzi be-valve bungaba buncane, kodwa ukulahlekelwa kokumelana kukhulu, i-valve kulula ukuyilimaza. Izinga lokugeleza okuphezulu, indawo evuthayo kanye neziqhumane izokhiqiza umphumela we-electrostatic, okubangela ingozi; Izinga lokugeleza lincane kakhulu, alisebenzi kahle, alinayo imali.
Izinga lokugeleza kanye nesivinini se-valve ngokuyinhloko kuncike kububanzi be-valve, kodwa futhi kuhlobene nokumelana kwesakhiwo se-valve kuya phakathi, kanye nokucindezela kwe-valve, izinga lokushisa kanye nokugxila kwe-medium nezinye izici. ube nokuxhumana okuthile kwangaphakathi.
Indawo yokudlula ivaluvu kanye nezinga lokugeleza, izinga lokugeleza linobudlelwano obuqondile, futhi izinga lokugeleza nokugeleza kuyizilinganiso ezimbili ezincike kwelinye. Uma izinga lokugeleza lihlala njalo, isivinini sokugeleza sikhulu, indawo yesiteshi sokugeleza ingaba yincane; Izinga lokugeleza lincane, indawo yesiteshi sokugeleza ingaba nkulu. Ngokuphambene nalokho, indawo yesiteshi sokugeleza inkulu, izinga lokugeleza lincane; Indawo yesiteshi sokugeleza incane, isivinini sayo sikhulu.
Izinga lokugeleza kwe-medium likhulu, ububanzi be-valve bungaba buncane, kodwa ukulahlekelwa kokumelana kukhulu, i-valve kulula ukuyilimaza. Izinga lokugeleza okuphezulu, indawo evuthayo kanye neziqhumane izokhiqiza umphumela we-electrostatic, okubangela ingozi; Izinga lokugeleza lincane kakhulu, alisebenzi kahle, alinayo imali. Kumaphakathi ane-viscosity enkulu nokuqhuma, izinga lokugeleza kufanele libe lincane. Amafutha noketshezi olune-viscosity enkulu khetha izinga lokugeleza nge-viscosity, ngokuvamile kuthatha 0.1 ~ 2m/s.
Ngokuvamile, ivolumu iyaziwa futhi izinga lokugeleza linganqunywa ngamandla. Ubukhulu obujwayelekile bevalvu bungabalwa kusukela kuzinga lokugeleza kanye nezinga lokugeleza.
Usayizi we-valve uyafana, uhlobo lwayo lwesakhiwo luhlukile, ukumelana noketshezi akufani. Ngaphansi kwezimo ezifanayo, lapho i-coefficient yokumelana ne-valve inkulu, izinga lokugeleza kanye nezinga lokugeleza koketshezi ngokwehla kwe-valve; Uma i-coefficient yokumelana ne-valve incane, izinga lokugeleza kanye nezinga lokugeleza koketshezi ngevalvu liyancipha.
Ukukhethwa kobubanzi be-valve kufanele kucabangele ukunemba komshini kanye nokuphambuka kosayizi we-valve, kanye nezinye izici. Usayizi we-valve kufanele ube inani elithile lomcebo, ngokuvamile u-15%. Emsebenzini wangempela, usayizi we-valve enosayizi wepayipi lenqubo.
Isikhathi sokuthumela: Aug-20-2022
