Indawo yokuvala ivame ukugqwala, ukuguguleka, nokuguguleka yi-medium futhi yonakala kalula ngoba i-seal isebenza njengedivayisi yokusika nokuxhuma, ukulawula nokusabalalisa, ukuhlukanisa, nokuxuba imidiya esiteshini se-valve.

Umonakalo womphezulu ungavalwa ngezizathu ezimbili: umonakalo owenziwe ngumuntu kanye nomonakalo wemvelo. Umklamo omubi, ukwenziwa okubi, ukukhethwa kwezinto ezingafanele, ukufakwa okungalungile, ukusetshenziswa kabi, kanye nokugcinwa kabi kungenye yezimbangela zomonakalo obangelwa imisebenzi yabantu. Umonakalo wemvelo ukuguguleka kwesakhiwoivalvuokwenzeka ngesikhathi sokusebenza okuvamile futhi kungumphumela wokugqwala okungenakugwenywa kwale ndawo kanye nesenzo sokuguguleka ebusweni bokuvala.

Izizathu zomonakalo wobuso bokuvala zingafingqwa kanje:

1. Ikhwalithi yokucubungula yendawo yokuvala ayilungile.

Izimpawu eziyinhloko zalokhu amaphutha afana nemifantu, ama-pores, kanye nokufakwa ebusweni bokuvala, okubangelwa ukusebenza okunganele kokushisela ubuso kanye nenqubo yokwelapha ukushisa kanye nokukhethwa kwemininingwane engafanele. Ukukhetha izinto ezingalungile kuholele ezingeni eliphakeme kakhulu noma eliphansi kakhulu lobulukhuni ebusweni bokuvala. Ngenxa yokuthi insimbi engaphansi ishaywa phezulu ngesikhathi senqubo yokuvala ubuso, okunciphisa ukwakheka kwe-alloy yendawo yokuvala, ubulukhuni bendawo yokuvala abulingani futhi ayimelani nokugqwala, kungaba ngokwemvelo noma ngenxa yokwelashwa okungalungile kokushisa. Akungabazeki ukuthi kukhona nezinkinga zokuklama kulokhu.

2. Umonakalo obangelwa ukukhetha okubi kanye nokusebenza kabi

Ukusebenza okukhulu ukuthi ukunqunywaivalvuisetshenziswa njenge-throttleivalvunokuthi ivalvu ayikhethwanga izimo zokusebenza, okuholela ekucindezelweni okukhulu kokuvala kanye nokuvala okusheshayo noma okuxegayo, okuholela ekugugulekeni nasekugugeni kobuso bokuvala.

Indawo yokuvala izosebenza ngokungajwayelekile ngenxa yokufakwa okungafanele kanye nokugcinwa ngokunganaki, futhi ivalvu izosebenza kabi, yonakalise indawo yokuvala ngaphambi kwesikhathi.

3. Ukuwohloka kwesimo samakhemikhali

Uma kungekho ukukhiqizwa kwamanje yi-medium ezungeze indawo yokuvala, i-medium ixhumana ngqo nendawo yokuvala bese iyidla. Indawo yokuvala ohlangothini lwe-anode izodla ngenxa yokugqwala kwe-electrochemical kanye nokuxhumana phakathi kwezindawo zokuvala, ukuxhumana phakathi kwendawo yokuvala nomzimba ovalayo nomzimba we-valve, umehluko wokuhlushwa kwe-medium, umehluko wokuhlushwa kwe-oxygen, njll.

4. Ukuguguleka okuphakathi nendawo

Kwenzeka lapho i-medium igijima phezu kobuso bokuvala futhi ibangele ukuguguleka, ukuguguleka, kanye nokuvuvukala. Izinhlayiya ezincane ezintantayo ku-medium zishaya ubuso bokuvala lapho zifika ngesivinini esithile, okuholela ekulimaleni kwendawo. Umonakalo wendawo uvela emithonjeni ehamba ngesivinini esiphezulu egubha ngqo indawo yokuvala. Amabhamuza omoya ayaqhuma futhi athinte indawo yokuvala lapho i-medium ihlanganiswa futhi ihwamuka kancane, okuholela ekulimaleni kwendawo. Indawo yokuvala izoguguleka kakhulu ngenxa yomsebenzi wokuguguleka kwe-medium kanye nesenzo sokugqwala kwamakhemikhali esihlukile.

5. Ukulimala kwemishini

Ukuklwebheka, ukuklwebheka, ukucindezelwa, kanye nokunye ukulimala endaweni yokuvala kuzokwenzeka kuyo yonke inqubo yokuvula nokuvala. Ngaphansi kwethonya lokushisa okuphezulu kanye nokucindezela okuphezulu, ama-athomu angena komunye nomunye phakathi kwendawo yokuvala emibili, okubangela isimo sokunamathela. Ukunamathelana kudabuka kalula lapho izindawo zokuvala ezimbili zihamba maqondana. Lesi simo kungenzeka kakhulu uma indawo yokuvala inobulukhuni obuphezulu bendawo. Indawo yokuvala izoguga noma ivale ngenxa yokuphuka nokucindezelwa kwediski yevalvu yendawo yokuvala lapho ibuyela esihlalweni sevalvu ngesikhathi sokusebenza kokuvala.

6. Ukuguga nokudabuka

Indawo yokuvala izophela ngokuhamba kwesikhathi ngenxa yesenzo sokushintshana kwemithwalo, okuholela ekukhuleni kwemifantu kanye nokuqhekeka kwezingqimba. Ngemva kokusetshenziswa isikhathi eside, irabha kanye nepulasitiki kuthambekele ekugugeni, okuphazamisa ukusebenza kahle.

Kusobala ocwaningweni lwezimbangela zomonakalo womphezulu wokuvala okwenziwe ngenhla ukuthi ukukhetha izinto zokuvala ezifanele, izakhiwo zokuvala ezifanele, kanye namasu okucubungula kubalulekile ukwandisa ikhwalithi kanye nokuphila kwenkonzo yomphezulu wokuvala kuma-valve.