Izici zokugeleza kwevalvu yokulawula zifaka phakathi izici ezine zokugeleza: umugqa oqondile, iphesenti elilinganayo, ukuvulwa okusheshayo kanye ne-parabola.
Uma ifakiwe enkambisweni yokulawula yangempela, ingcindezi yokwehluka kwevalvu izoshintsha ngokushintsha kwesilinganiso sokugeleza. Okusho ukuthi, uma izinga lokugeleza lincane, ukulahlekelwa yingcindezi kwengxenye yepayipi kuncane, futhi ingcindezi yokwehluka kwevalvu izokwanda, futhi ingcindezi yokwehluka kwevalvu izoncipha uma izinga lokugeleza likhulu. Lesi sici sevalvu, esihlukile kwesici esingokwemvelo, sibizwa ngokuthi isici sokugeleza esisebenzayo.
I-valve yangaphakathi yesici sokuqala okusheshayo inomumo wediski futhi isetshenziswa ngokuyinhloko esenzweni sokuvula/sokuvala.
Izici zokulawula ukugeleza kwevalvu yokuma kobuso be-spool valve yokulawula zinqunywa izici zokugeleza kwevalvu kanye nokuhlanganiswa kwamapayipi enqubo, amaphampu, njll., futhi zikhethwa kuthebula elingezansi ngokwesilinganiso sokulahlekelwa kwengcindezi yevalvu entweni ngayinye yokulawula kanye nohlelo.
Into yokulawula Isilinganiso sokulahlekelwa kwengcindezi yevalvu ohlelweni Izici zokugeleza kwevalvu
Ukulawula ukugeleza noma ukulawula izinga loketshezi Ngaphansi kuka-40% Amaphesenti alinganayo
ukulawula ukugeleza noma ukulawula izinga loketshezi Ngaphezulu kuka-40% Umugqa
ukulawula ingcindezi noma ukulawula izinga lokushisa Ngaphansi kwama-50% Amaphesenti alinganayo
ukulawula ingcindezi noma ukulawula izinga lokushisa Ngaphezu kuka-50% Umugqa
Njengoba ukulahleka kwengcindezi yepayipi kukhuphuka ngokulingana nesikwele sesilinganiso sokugeleza, uma izici zomzimba wevalvu zibonisa ushintsho olulula oluqondile, ingcindezi yokwehluka kwevalvu iyanda lapho izinga lokugeleza lincane, futhi izinga lokugeleza liba likhulu lapho ivalvu ivulwa kancane. Lapho izinga lokugeleza likhulu, ingcindezi yokwehluka kwevalvu iyancipha. Izinga lokugeleza alikwazi ukulingana ngqo nokuvulwa kwevalvu. Ngenxa yalesi sizathu, inhloso yokuklama isici esilinganayo sephesenti ukwengeza izici zepayipi kanye nephampu ukuze kutholakale ukulawula kokugeleza okuzimele ngesilinganiso sokugeleza futhi kushintsha kuphela ngokulingana nokuvulwa kwevalvu.
Ukusebenza kwe
uhlelo lwamapayipi kanye nevalvu yokulawula ukulahlekelwa kwengcindezi
ingakhethwa ngokuya ngenhlanganisela yeyunithi yokushayela kanye nomzimba wevalvu.
Inhlanganisela yeyunithi yokushayela kanye nomzimba we-valve kanye nesenzo se-valve (isibonelo se-valve yesihlalo esisodwa)
Isenzo sevalvu sihlanganisa izinhlobo ezintathu: isenzo esiqondile, isenzo esibuyela emuva, kanye nesenzo sohlobo lokubamba. Imodi yesenzo esiqondile yokushayela umoya njengohlobo lwe-diaphragm kanye nohlobo lwesilinda iyindlela yokuvala ivalvu ngokwandisa isignali yokucindezela komoya, eyaziwa nangokuthi “UMOYA WOKUVALA”. Indlela yesenzo esibuyela emuva ukuvula ivalvu ngokwandisa isignali yokucindezela komoya, eyaziwa nangokuthi “UMOYA WOKUVULA” noma “UKUVALA OKUNGENAMOYA”. Izimpawu ezisebenza ngogesi zingaguqulwa zibe yizimpawu zokucindezela komoya yi-positioner. Lapho isignali yokusebenza iphazamiseka noma umthombo womoya uphazamiseka noma ugesi unqanyuliwe, sicela ucabangele ukuphepha kanye nokunengqondo kwenqubo bese ukhetha ukuyivala noma ukuyivula ivalvu.
Isibonelo, lapho kulawulwa inani le-asidi nge-valve ngesikhathi sokuxuba amanzi ne-asidi, kuphephile futhi kunengqondo ukuvala i-valve yokulawula i-asidi lapho umugqa wesignali kagesi unqanyuliwe noma ipayipi lesignali yomoya livuza, umthombo womoya uphazamiseka, noma ugesi unqanyuliwe. I-valve yesenzo esibuyela emuva.
Isikhathi sokuthunyelwe: Agasti-31-2023