Amasistimu we-pneumatic asetshenziswa kabanzi futhi izixazululo ezingabizi kakhulu zokuletha amandla namandla kumathuluzi, izinsimbi, kanye nezinqubo zezimboni. Wonke amasistimu we-pneumatic ancike kukho kokubili ingcindezi nokugeleza ukuze asebenze ngempumelelo. Nakuba ukulawulwa kwengcindezi nokulawula ukugeleza kuyimiqondo ehlukene, kuhlobene eduze; ukulungisa okukodwa kuzothinta kwenye. Lesi sihloko sihlose ukucacisa umehluko phakathi kwengcindezi nokulawula ukugeleza, ukwenza lula ubudlelwano babo, futhi kuxoxwe ngamadivayisi ahlukahlukene okulawula ingcindezi kanye namavalvu okulawula ukugeleza avame ukutholakala ezinhlelweni zomoya.
Ingcindeziichazwa njengamandla asetshenziswa endaweni ethile. Ukulawula ukucindezela kuhilela ukulawula indlela ehanjiswa ngayo futhi kuqukethwe ngaphakathi kwesistimu ye-pneumatic ukuqinisekisa ukulethwa kwamandla okuthembekile nokwanele.Ukugeleza, ngakolunye uhlangothi, ibhekisela esivinini kanye nevolumu lapho umoya ocindezelwe uhamba khona. Ukulawula ukugeleza kuhlobene nokulawula ukuthi umoya uhamba ngokushesha kangakanani futhi ngamuphi umthamo ohlelweni.
Uhlelo olusebenzayo lwe-pneumatic ludinga kokubili ukucindezela nokugeleza. Ngaphandle kokucindezela, umoya awukwazi ukusebenzisa amandla anele ekusetshenzisweni kwamandla. Ngokuphambene, ngaphandle kokugeleza, umoya onomfutho uhlala uqukethwe futhi awukwazi ukufinyelela lapho uya khona.
Ngamagama alula,ingcindezikuhlobene namandla namandla omoya. Ekulawulweni kwengcindezi, amandla akhiqiziwe alingana nokucindezela okuphindaphindwayo ngendawo equkethwe kuyo. Ngakho-ke, ukufakwa okuphezulu kokucindezela endaweni encane kungakha amandla afanayo nokufakwa okuphansi kokucindezela endaweni enkulu. Ukulawula ukucindezela kulawula kokubili amandla okokufaka nawokukhiphayo ukuze kugcinwe ingcindezi engaguquki, elinganiselayo efanele uhlelo lokusebenza, ngokuvamile etholwa ngedivayisi elawula ingcindezi.
Ukugelezakuhlobene nevolumu nesivinini somoya. Ukulawula ukugeleza kuhilela ukuvula noma ukukhawulela indawo umoya ongageleza kuyo, ngaleyo ndlela kulawula ukuthi ungakanani nokuthi umoya ocindezelwe uhamba ngokushesha kangakanani ohlelweni. Ukuvuleka okuncane kubangela ukugeleza komoya okuncane ngengcindezi ethile ngokuhamba kwesikhathi. Ukulawula ukugeleza kuvame ukuphathwa nge-valve yokulawula ukugeleza elungisa ukuvumela noma ukuvimbela ukugeleza komoya ngokunembile.
Nakuba ukucindezela nokulawula ukugeleza kuhlukile, kuyimingcele ebalulekile ngokulinganayo ohlelweni lwe-pneumatic futhi kuncike komunye nomunye ngokusebenza okufanele. Ukulungisa okuhlukile kuzothinta ngokungenakugwenywa okunye, kube nomthelela ekusebenzeni kohlelo lonke.
Kusistimu ye-pneumatic ekahle, ukulawula okuhlukile okukodwa ukuze kuthonye okunye kungase kubonakale kungenzeka, kodwa izinhlelo zokusebenza zomhlaba wangempela azivamile ukumela izimo ezifanele. Isibonelo, ukusebenzisa ingcindezi yokulawula ukugeleza kungase kuntule ukunemba futhi kuholele ezindlekweni zamandla eziphakeme ngenxa yokugeleza komoya ngokweqile. Kungase futhi kubangele ukucindezela ngokweqile, izingxenye ezilimazayo noma imikhiqizo.
Ngokuphambene, ukuzama ukulawula ingcindezi ngokuphatha ukugeleza kungase kuphumele ekwehleni kwengcindezi lapho ukugeleza komoya kukhuphuka, okuholela ekunikezeni ingcindezi engazinzile engase yehluleke ukuhlangabezana nezidingo zamandla ohlelo lokusebenza kuyilapho imosha amandla ngokugeleza komoya ngokweqile.
Ngenxa yalezi zizathu, kuvame ukunconywa ukuthi ulawule ukulawulwa kokugeleza nokulawula ingcindezi ngokuhlukene kusistimu yomoya.
Ama-valve okulawula ukugelezazibalulekile ekulawuleni noma ekulungiseni ukugeleza komoya (isivinini) ngamasistimu womoya. Izinhlobo ezahlukahlukene ziyatholakala ukuze zivumelane nezicelo ezahlukahlukene, kufaka phakathi:
• Ama-Proportional Control Valves: Lezi zilungisa ukugeleza komoya ngokusekelwe ku-amperage esetshenziswa ku-solenoid ye-valve, ishintsha ukuphuma kokugeleza ngokufanele.
• Amavalvu ebhola: Ifaka ibhola elingaphakathi elinamathiselwe esibanjeni, lawa mavalvu avumela noma avimbele ukugeleza lapho ephendulwa.
• Ama-Butterfly Valves: Lezi zisebenzisa ipuleti lensimbi elinamathiselwe kusibambo ukuze uvule (uvumele) noma uvale (uvimbe) ukugeleza.
• Amavalvu Enaliti: Lokhu kunikeza ukulawula ukugeleza ngenaliti evulayo noma evalayo ukuze ivumele noma ivimbe ukugeleza komoya.
Ukulawulaingcindezi(noma amandla/amandla), amavalvu okulawula ingcindezi noma izilawuli zokucindezela ziyasetshenziswa. Ngokuvamile, ama-valve okulawula ukucindezela ama-valve avaliwe, ngaphandle kwama-valve okunciphisa ukucindezela, avame ukuvuleka. Izinhlobo ezijwayelekile zifaka:
• Amavavu Okusiza Ingcindezi: Lokhu kunciphisa ukucindezela okukhulu ngokuphambukisa ingcindezi eyeqile, ukuvikela okokusebenza kanye nemikhiqizo emonakalweni.
• Amavalvu Okunciphisa Ingcindezi: Lezi zigcina ukucindezela okuphansi ohlelweni lwe-pneumatic, ukuvala ngemva kokufinyelela ukucindezela okwanele ukuvimbela ukucindezela ngokweqile.
• Amavalvu Okulandelanisa: Ngokuvamile kuvalwe, lezi zilawula ukulandelana kokunyakaza kwe-actuator kumasistimu anama-actuator amaningi, okuvumela ingcindezi ukuthi idlule isuka ku-actuator eyodwa iye kwelandelayo.
• Amavalvu Aphikisayo: Ngokuvamile kuvalwe, lezi zigcina ingcindezi emisiwe engxenyeni yesistimu ye-pneumatic, ephikisana namandla angaphandle.
Ukuze uthole ulwazi olwengeziwe mayelana nokulawula ingcindezi nokugeleza kumasistimu womoya, zizwe ukhululekile ukufinyelela!