Yini?I-Pneumatic Control Valve?

I-Pneumatic Control Valve iwukuba umoya ocindezelwe njengomthombo wamandla, kusilinda njenge-actuator, futhi ngosizo lwe-positioner, i-converter, ama-solenoid valves nezinye izesekeli zokushayela i-valve, ukufeza ukulawulwa kokuvala noma ukulinganisa, ukuthola ukulawula. isignali yesistimu yokulawula okuzenzakalelayo yezimboni ukulungisa ukugeleza, ingcindezi, izinga lokushisa kanye neminye imingcele yenqubo.I-Pneumatic Control Valve ibonakala ngokulawula okulula, impendulo esheshayo, futhi empeleni iphephile, azikho izinyathelo ezengeziwe zokuvikela ukuqhuma.Kodwa-ke, ukusebenza kwe-valve ngezinye izikhathi kwehluleka, ngokulandelayo sizochaza ngokuningiliziwe i-valve yokulawula ingase ivele 5 izinhlobo zokwehluleka kanye nokwelashwa kwayo.

Uhlobo lwesihlalo esisodwa, isihlalo esikabili, uhlobo lomkhono Usayizi Ububanzi(Intshi) DN20 ukuya ku-DN200 (3/4″ kuya ku-8″) I-Pressure 16 / 40 / 64 bar (232 / 580 / 928 psi) Uhlobo lokushisaUhlobo olujwayelekile: -20℃ ukuya ku-200 ℃ (-4°F kuya ku-392°F)Uhlobo lwezinga lokushisa eliphansi:-60℃ ukuya ku-196℃ (-76°F ukuya ku-384.8°F)Uhlobo lokupholisa:-40℃ ukuya ku-450℃ (-40°F kuya ku-842°F )Izinketho Zokuxhuma I-Valve Efakwe Flanged noma Eshiselwe I-WCB, CF8, CF8M, I-Cast iron Seal Material PTFE Pneumatic Accessories Positioner, FRL, ivalvu ye-solenoid yomoya kanye ne-switch yomkhawulo Izici zokugeleza Amaphesenti alinganayo, umugqa, ovula ngokushesha Uhlobo lwe-Actuator Multi-spring diaphragm Actuator Actuator thayipha Isenzo esiqondile, isenzo sokuhlehla Ibanga lasentwasahlobo 20 ukuya ku-100KPa, 40 kuya ku-200KPa, 80 kuya ku-240KPa Ingcindezi yokuhlinzeka 0.4~0.5MPa Ibanga elilungisekayo 50:1 Inani Chofoza lapha ukuze uthole inani elingcono!

Amaphutha ayi-5 Ajwayelekile Evaluvu Yokulawula Umoya:

1. I-Control Valve ayisebenzi

Okokuqala qinisekisa ukuthi ingcindezi yomthombo wegesi ijwayelekile, thola ukwehluleka komthombo wegesi.Uma umfutho womoya ujwayelekile, nquma ukuthi isikhulisi sendawo noma isiguquli somoya esicindezelwe sinokukhiphayo.

2. Ukuvinjelwa kweValve

Ezimweni ezinjalo, ungakwazi ukuvula ngokushesha, uvale umugqa wesibili noma i-valve yokulawula, ukuze izimpahla ezebiwe kusukela kulayini wesibili noma i-valve yokulawula ibe yi-medium run.Ngaphezu kwalokho, ungakwazi futhi ukuqinisa isiqu ngodlawu lwamapayipi, ngaphezu kwengcindezi yesignali, isiqu esizungezayo samandla amahle nebi, ukuze i-valve core flash card ibe yindawo.

Uma ingakwazi ukuxazulula inkinga, ingandisa ingcindezi yomthombo wegesi, ikhulise amandla okushayela ukuya phezulu naphansi ngokuphindaphindiwe izikhathi eziningana, ingaxazulula inkinga.Uma namanje akakwazi ukuhambisa, khona-ke kudingeka ukwenze ukuze ulawule ukucutshungulwa kwe-valve, yebo, lo msebenzi udinga amakhono aqinile ochwepheshe, kufanele wenziwe ngosizo lwabasebenzi abangochwepheshe kanye nobuchwepheshe, ngaphandle kwalokho imiphumela emibi kakhulu.

3. Ukuvuza kwevalvu

Ukuvuza kwe-valve yokulawula umoya ngokuvamile kubangelwa ukuvuza kwangaphakathi kwe-valve yokulawula, ukuvuza kokupakisha nokuvuza kwe-valve core kanye nesihlalo se-valve.

3.1 Ukuvuza Kwangaphakathi

Ukungaphatheki kahle kwesiqu se-valve, isiqu se-valve yegesi side kakhulu, ibanga ukuya phezulu (noma phansi) alanele, okubangela igebe phakathi kwe-SPOOL nesihlalo sevalvu, ayikwazi ukuthintana ngokugcwele,

3.2 Ukupakisha Ukuvuza

Ukuze wenze ukugxusha kube lula ukulayisha, i-chamfer phezulu kwebhokisi lokugxusha, faka indandatho yokuvikela yensimbi enegebe elincane lokumelana nokuguguleka phansi kwebhokisi lokugxusha, phawula ukuthi indawo yokuxhumana phakathi kwendandatho yokuvikela nokugxusha ayikwazi indiza ethambekele.

Ukuze uvimbele ukugxusha ukuthi kungaphushwa ngaphandle kwengcindezi ephakathi.Ingaphezulu lebhokisi lokugxusha kanye nengxenye yokuxhumana yokugxusha kufanele iqedwe ukuze kuthuthukiswe isiphetho esingaphezulu nokunciphisa ukugqokwa kokugxusha.I-graphite eguquguqukayo ikhethwa njenge-filler ngenxa yokuqina kwayo okuhle komoya, amandla amancane okungqubuzana, ushintsho oluncane ekusetshenzisweni kwesikhathi eside, ukuguga okuncane nokuklebhuka, kulula ukuyigcina, nokumelana nokucindezela nokumelana nokushisa kuhle ngoba amandla okungqubuzana awakwenzi. ushintsho ngemva kokuba umshudo indlala liqiniswe futhi free kusukela ukugqwala abezindaba zangaphakathi, futhi isiqu kanye ukugxusha ibhokisi ukuthintana kwangaphakathi insimbi akusho pitting noma ukugqwala.

Ngale ndlela, vikela ngempumelelo uphawu lokufaka uphawu lwe-valve stem, uqinisekise ukuthembeka kokupakisha uphawu, impilo yesevisi nayo ithuthukisiwe kakhulu.

3.3 I-Valve Core, I-Valve Seat Deformation Ukuvuza

Ukukhethwa kwezinto ezimelana nokugqwala, ukuba khona kwe-pitting, trachoma nokunye ukukhubazeka komkhiqizo okuzoqedwa ngokuqinile.Uma ukuguqulwa kwe-valve core kanye nesihlalo kungekona okubi kakhulu, i-sandpaper enhle ingasetshenziswa ukugaya, ukususa iminonjana, ukuthuthukisa ukuvala ukuvala, ukuthuthukisa ukusebenza kokuvala.Uma umonakalo mkhulu, kufanele ufake i-valve entsha.

4. Ama-oscillates

Ukuqina kwentwasahlobo ye-valve yokulawula akwanele, isignali yokuphuma kwe-valve yokulawula ayizinzile futhi ishintsha ngokushesha, okwenza kalula i-oscillation ye-Valve yokulawula.

Njengoba izimbangela ze-oscillation zihlukahlukene, kuyadingeka ukwenza ukuhlaziya okuphathekayo kwezinkinga ezithile.Isibonelo, i-valve yokulungisa ene-spring ye-rigidity enkulu ikhethiwe, futhi isakhiwo sokubulala i-piston sisetshenziswa esikhundleni salokho.

Ipayipi kanye nesisekelo zidlidliza ngobudlova, futhi ukuphazamiseka kokudlidliza kungaqedwa ngokwandisa ukwesekwa.Shintsha isakhiwo esihlukile se-valve yokulawula.Ukusebenza ekuvuleni okuncane okubangelwa i-oscillation, kubangelwa ukukhetha okungalungile, ikakhulukazi, ngoba umthamo wokugeleza kwe-valve C likhulu kakhulu, kufanele ukhethwe kabusha, ukhethe umthamo wokugeleza we-value C encane noma ukusetshenziswa kwe-sub- isilawuli sebanga noma ukusetshenziswa kwe-valve engumzali ukuze kunqobe i-valve yokulawula esebenza endaweni encane yokuvula okubangelwa ukuzungeza.

5. Umsindo

5.1 Indlela Yokuqeda Umsindo Ozwakalayo

Kuphela uma i-resonance ye-valve yokulawula, kukhona amandla aphezulu futhi ikhiqiza ama-decibel angu-100 omsindo onamandla.Ezinye zibonisa ukudlidliza okunamandla, umsindo awumkhulu, okunye ukudlidliza akunamandla, kodwa umsindo mkhulu kakhulu;okunye ukudlidliza nomsindo kukhudlwana.Lo msindo ukhiqiza umsindo we-monotonic emvamisa ephakathi kuka-3000 no-7000 Hz.Ngokusobala, ngokuqeda i-resonance, umsindo uzonyamalala ngokwemvelo.

5.2 Ukunciphisa Umsindo we-Cavitation

I-Cavitation ingumthombo oyinhloko womsindo we-hydrodynamic.Lapho i-cavitation yenzeka, ibhamuza lizoqhuma futhi likhiqize umthelela wesivinini esikhulu, okuholela esikhungweni esinamandla sendawo nomsindo we-cavitation.Umsindo unebanga elibanzi lefrikhwensi futhi ukhiqiza umsindo we-lattice ofana nalowo okhiqizwa uketshezi oluqukethe amatshe.Ukuqeda nokunciphisa i-cavitation kuyindlela ephumelelayo yokuqeda nokunciphisa umsindo.

5.3 Sebenzisa Indlela Yodonga Oluwugqinsi

Ukusebenzisa ishubhu elinezindonga eziwugqinsi kungenye yezindlela zokubhekana namasekhethi omsindo.Ukusebenzisa udonga oluncane kungakhuphula umsindo ngo-5 DB, ukusebenzisa ishubhu eliwugqinsi kunganciphisa umsindo ngo-0 ~ 20 DB.Ukuqina kodonga olunobubanzi obufanayo, ukukhulu ukushuba kodonga olufanayo, kuba ngcono umphumela wokunciphisa umsindo.Kumapayipi e-DN200 anodonga oluyi-6.25,6.75,8,10,12.5,15,18,20 kanye no-21.5 mm, umsindo ungancishiswa ngo-3.5,-2 (okungukuthi ukwanda), 0,3,6,8, 11, 13 kanye ne-14.5 DB ngokulandelana.Yiqiniso, uma udonga lushubile, izindleko ziphezulu.

5.4 Sebenzisa Indlela Yempahla Yokumunca Umsindo

Lokhu futhi kuyindlela evamile, ephumelela kakhulu yokucubungula indlela yomsindo.Izinto ezimunca umsindo zingase zisetshenziselwe ukuvala umthombo womsindo nepayipi ngemuva kwevalvu.Kubalulekile ukuveza ukuthi ukuphumelela kokudambisa umsindo kuyanqamuka nomaphi lapho impahla emunca umsindo ihlanganiswa futhi kusetshenziswa amashubhu anezindonga eziwugqinsi, njengoba umsindo ungahamba amabanga amade ngokugeleza koketshezi.Le ndlela iyasebenza lapho izinga lomsindo lingekho phezulu kakhulu futhi ubude bepayipi bude kakhulu, njengoba kuyindlela ebiza kakhulu.

5.5 Uchungechunge lweSilencer Indlela

Ilungele ukuthuliswa komsindo we-aerodynamic.Ingakwazi ukuqeda ngokuphumelelayo umsindo ongaphakathi koketshezi futhi icindezele izinga lomsindo odluliselwe kungqimba oluqinile lomngcele.Le ndlela iphumelela kakhulu futhi iyonga lapho izinga lokugeleza kwenqwaba liphezulu noma isilinganiso sokwehla kwengcindezi ngaphambi nangemva kwe-valve iphezulu.Ukusetshenziswa kwezithulisi zochungechunge lohlobo lokumuncwa kunganciphisa kakhulu umsindo.Ukucatshangelwa kwezomnotho, nokho, ngokuvamile kukhawulelwe ekuncipheni cishe okungama-25 DB.

5.6 Indlela Yokubiyela

Sebenzisa izindawo ezivalekile, izindlu kanye nezakhiwo ukuze uhlukanise umthombo womsindo endaweni engaphandle ube ngaphakathi kwemingcele eyamukelekayo.

5.7 Series Throttling

Uma isilinganiso sokucindezela se-valve yokulawula siphezulu (△ P / p 1≥0.8) , indlela yochungechunge lwe-throttling isetshenziselwa ukuhlakaza ukwehla kokucindezela okuphelele ku-valve yokulawula kanye nesici esinqunyiwe se-throttling ngemuva kwe-valve.I-DIFFUSERS, izivimbeli ezinama-porous, isibonelo, ziyindlela ephumelela kakhulu yokunciphisa umsindo.Ukuze uthole ukusebenza kahle kwe-diffuser, i-diffuser (isimo esiqinile nosayizi) kufanele siklanywe ngokuhambisana nokufakwa kocezu ngalunye, ukuze izinga lomsindo okhiqizwa i-valve lifane nalelo elikhiqizwa i-diffuser.

5.8 Sebenzisa Ivaluvu Yomsindo Ophansi

I-valve yomsindo ophansi ngokuya ngoketshezi nge-spool, isihlalo sendlela yokugeleza ehlukumezayo (amashaneli amaningi, amashaneli amaningi) kancane kancane yehlisa ijubane ukuze ugweme noma yiliphi iphuzu endleleni yokugeleza ukukhiqiza i-supersonic.Kunezinhlobonhlobo zamafomu, izinhlobonhlobo zesakhiwo se-valve yomsindo ophansi (kukhona umklamo okhethekile wesistimu) ozosetshenziswa uma ukhetha.Uma umsindo ungemkhulu kakhulu, khetha i-valve yomkhono ophansi womsindo, inganciphisa umsindo 10 ~ 20 DB, lena ivalve yomsindo ophansi eyonga kakhulu.