Uma usebenzisa ivalvu, kuvame ukuba nezinkinga ezithile ezicasulayo, okuhlanganisa nokuthi ivalvu ayivalwanga yonke indlela. Kufanele ngenzeni? Ivalvu yokulawula inemithombo eyahlukahlukene yokuvuza kwangaphakathi ngenxa yohlobo lwesakhiwo sayo esiyinkimbinkimbi sevalvu. Namuhla, sizoxoxa ngezinhlobo eziyisikhombisa ezahlukene zokuvuza kwevalvu yokulawula kwangaphakathi kanye nokuhlaziywa nokulungiswa kwento ngayinye.

1. Ivalvu ayikavalwa ngokugcwele futhi ukusetha indawo ye-actuator engu-zero akunembile.

Isixazululo:

1) Vala ivalvu ngesandla (qiniseka ukuthi ivaliwe ngokuphelele);

2) Vula ivalvu ngesandla, uma nje amandla amancane engasetshenziswa ukuyiphendula;

3) Jika ivalvu ngesigamu sokujika ngakolunye uhlangothi;

4) Okulandelayo, shintsha umkhawulo ophezulu.

2. Ukusunduza kwe-actuator akwanele.

Ukusunduza kwe-actuator akwanele ngoba i-valve iwuhlobo lokuvala olucindezelayo. Uma kungekho ngcindezi, kulula ukufika endaweni evalwe ngokuphelele, kodwa uma kunengcindezi, ukunyuka koketshezi akukwazi ukuvinjelwa, okwenza kube nzima ukuvala ngokuphelele.

Isixazululo: shintsha i-actuator enamandla aphezulu, noma ushintshele ku-spool elinganiselayo ukuze unciphise amandla angalingani e-medium

3. Ukuvuza kwangaphakathi okubangelwa yikhwalithi embi yokwakha ivalvu yokulawula kagesi

Ngenxa yokuthi abakhiqizi bama-valve abazilawuli ngokuqinile izinto zama-valve, ubuchwepheshe bokucubungula, ubuchwepheshe bokuhlanganisa, njll. ngesikhathi senqubo yokukhiqiza, indawo yokuvala ayigaywanga ezingeni eliphezulu futhi amaphutha afana ne-pitting kanye ne-trachoma awasuswa ngokuphelele, okuholela ekuvuza kwangaphakathi kwe-valve yokulawula kagesi.

Isixazululo: Phinda ucubungule indawo yokuvala

4. Ingxenye yokulawula yevalvu yokulawula kagesi inomthelela ekuvuzeni kwangaphakathi kwevalvu.

Izindlela zokulawula ngomshini, okuhlanganisa ukushintsha komkhawulo we-valve kanye nokushintsha kwe-over torque, kuyindlela yendabuko yokusebenzisa i-valve yokulawula kagesi. Indawo ye-valve ayicacile, isiphethu sigugile, futhi i-coefficient yokwanda kokushisa ayilingani ngoba lezi zinto zokulawula zithintwa izinga lokushisa elizungezile, ingcindezi, kanye nomswakama. kanye nezinye izimo zangaphandle, okuyizona ezibangela ukuvuza kwangaphakathi kwe-valve yokulawula kagesi.

Isixazululo: lungisa umkhawulo.

5. Ukuvuza kwangaphakathi okubangelwa izinkinga zokuxazulula izinkinga zevalvu yokulawula kagesi

Kujwayelekile ukuthi ama-valve okulawula kagesi ahluleke ukuvula ngemva kokuvalwa ngesandla, okubangelwa izinqubo zokucubungula nokuhlanganisa. Indawo yokusebenza yamaswishi omkhawulo aphezulu naphansi ingasetshenziswa ukulungisa ukushaywa kwevalvu yokulawula kagesi. Uma ukushaywa kulungiswe kancane, ivalvu yokulawula kagesi ngeke ivaleke kahle noma ivuleke; uma ukushaywa kulungiswe kakhulu, kuzobangela ukweqisa kwendlela yokuvikela yeswishi ye-torque;

Uma inani lesenzo leswishi yokushintsha i-over-torque likhuphukile, kuzoba nengozi engalimaza i-valve noma indlela yokudlulisa yokunciphisa, noma ngisho nokushisa injini. Ngokuvamile, ngemva kokuba i-valve yokulawula kagesi isilungisiwe, indawo yokushintsha umkhawulo ephansi yomnyango kagesi isethwa ngokushukumisa ngesandla i-valve yokulawula kagesi iye phansi, kulandelwe ukuyishukumisa ngendlela yokuvula, kanti umkhawulo ophezulu usethwa ngokushukumisa ngesandla i-valve yokulawula kagesi iye endaweni evulekile ngokuphelele.

Ngakho-ke, ivalvu yokulawula kagesi ngeke ivinjelwe ekuvulekeni ngemva kokuvalwa ngokuqinile ngesandla, okuvumela umnyango kagesi ukuthi uvuleke futhi uvalwe ngokukhululeka, kodwa empeleni kuzoholela ekuvuzeni kwangaphakathi komnyango kagesi. Ngisho noma ivalvu yokulawula kagesi isethwe kahle, njengoba isikhundla sokusebenza seswishi yomkhawulo sihlala sizinzile, i-medium eyilawulayo izoqhubeka nokugeza futhi igqoke ivalvu ngenkathi isebenza, okuzophinde kubangele ukuvuza kwangaphakathi ngenxa yokuvalwa kwevalvu okuxegayo.

Isixazululo: lungisa umkhawulo.

6. Ukuvala Umgodi Ukuvuza kwangaphakathi kwevalvu yokulawula kagesi kubangelwa ukugqwala kwevalvu okubangelwa ukukhetha uhlobo olungalungile.

Umehluko we-cavitation kanye nengcindezi uxhunyiwe. Umehluko we-cavitation uzokwenzeka uma umehluko wangempela wengcindezi u-P we-valve uphakeme kunomehluko wengcindezi obalulekile we-Pc we-cavitation. Inani elikhulu lamandla likhiqizwa ngesikhathi senqubo ye-cavitation lapho ibhamuza liqhuma, okunomthelela esihlalweni se-valve kanye ne-valve core. I-valve evamile isebenza ezimweni ze-cavitation izinyanga ezintathu noma ngaphansi, okusho ukuthi i-valve ihlushwa ukugqwala okukhulu kwe-cavitation, okuholela ekuvuza kwesihlalo se-valve kufike ku-30% wokugeleza okulinganiselwe. Izingxenye ze-throttling zinomphumela omkhulu wokubhubhisa. Lo monakalo awukwazi ukulungiswa.

Ngakho-ke, izidingo zobuchwepheshe ezithile zamavalvu kagesi ziyahlukahluka kuye ngokuthi asetshenziswa kanjani. Kubalulekile ukukhetha amavalvu okulawula kagesi ngobuhlakani ngokuvumelana nenqubo yesistimu.

Isixazululo: Ukuze uthuthukise inqubo, khetha ivalvu yokulawula izinyathelo eziningi noma yesikhafu.

7. Ukuvuza kwangaphakathi okubangelwa ukuwohloka okuphakathi kanye nokuguga kwevalvu yokulawula kagesi

Ngemva kokuthi ivalvu yokulawula kagesi isilungisiwe, ngemva kokusebenza okuthile, ivalvu yokulawula kagesi izovalwa ngoba ukushaywa kwayo kukhulu kakhulu ngenxa yokuqhekeka kwevalvu, ukuguguleka okuphakathi, ukuguguleka kwengaphakathi levalvu kanye nesihlalo, kanye nokuguga kwezingxenye zangaphakathi. Ukwanda kokuvuza kwevalvu yokulawula kagesi kuwumphumela wezinto eziyekethisayo. Ukuvuza kwangaphakathi kwevalvu yokulawula kagesi kuzoqhubeka nokuba kubi ngokuhamba kwesikhathi.

Isixazululo: lungisa kabusha i-actuator bese wenza ukulungiswa nokulinganiswa okuvamile.