I-valve esetyenziswa ngokuqhelekileyo izinto ezingezizo ezentsimbi zijonga imowudi yokudibanisa phakathi kwe-actuator yombane kunye nevalve nganye

I-valve esetyenziswa ngokuqhelekileyo izinto ezingezizo ezentsimbi zijonga imowudi yokudibanisa phakathi kwe-actuator yombane kunye nevalve nganye

Isihlalo serabha ye-ethylene propylene irebha yomlinganiselo wobushushu ngu -28 ¡æ~120¡æ. I-EPDM imele i-terpolymer ye-ethylene, ipropylene, kunye ne-diene, eyaziwa ngokuba yi-EPT Nordell. Ukuchasana okugqwesileyo kwe-ozone kunye nokumelana nemozulu, ukusebenza kakuhle kokufakelwa kombane, ukuchasana kakuhle ne-polar capacitors kunye nemidiya ye-inorganic. Ngoko ke, inokusetyenziswa kwishishini le-HVAC, amanzi, i-phosphate ester, i-alcohol, i-ethylene glycol, njl. I-Ethylene propylene i-rubber SEATES AYIKUGQITHISIWE UKUSETYENZISWA KWI-HYDROCARBON organic solvents NE-OI, i-chlorinaTED HYDROCARBONS, i-turpentINE, okanye enye i-OILS.
Ivalve esetyenziswa ngokuqhelekileyo izinto ezingezizo ezentsimbi
Molo, irabha ye-nitrile
Isihlalo serabha ye-Nitrile esilinganiswe kwiqondo lobushushu ngu -18 ¡ã C ukuya kwi-100 ¡ã C. Ikwabizwa ngokuqhelekileyo, i-NITRILE, okanye i-HYCAR. Yinto yerubha yendalo yonke ilungele amanzi, igesi, ioli kunye negrisi, i-petroli (ngaphandle kwepetroli enezongezo), utywala kunye ne-ethylene glycol, i-petroleum gas eliquefied, i-propane kunye ne-butane, ioli yeoli kunye nezinye izinto ezininzi. Kananjalo inokumelana nokunxiba kakuhle kunye nokumelana nokuguqulwa. Ibakala lokutya (FG) isihlalo serabha ye-nitrile esilinganiswe ngayo lobushushu yi -18¡æ ukuya ku-82¡æ. Ukubunjwa kwayo kuhambelana nomgangatho weCFR iCandelo 21, iCandelo 177.2600. Ingasetyenziswa ngendlela efanayo nerabha ye-nitrile eqhelekileyo kodwa ifuna imvume ye-FDA.
Ethylene propylene irabha EPDM
Isihlalo serabha ye-ethylene propylene irebha yomlinganiselo wobushushu ngu -28¡æ~120¡æ. I-EPDM imele i-terpolymer ye-ethylene, ipropylene, kunye ne-diene, eyaziwa ngokuba yi-EPT Nordell. Ukuchasana okugqwesileyo kwe-ozone kunye nokumelana nemozulu, ukusebenza kakuhle kokufakelwa kombane, ukuchasana kakuhle ne-polar capacitors kunye nemidiya ye-inorganic. Ngoko ke, inokusetyenziswa kwishishini le-HVAC, amanzi, i-phosphate ester, i-alcohol, i-ethylene glycol, njl. I-Ethylene propylene i-rubber SEATES AYIKUGQITHISIWE UKUSETYENZISWA KWI-HYDROCARBON organic solvents NE-OI, i-chlorinaTED HYDROCARBONS, i-turpentINE, okanye enye i-OILS.
Umgangatho wokutya we-ethylene propylene isihlalo serabha yerabha elinganiswe ngohlobo lobushushu yi -28¡æ~120¡æ. Ukubunjwa kwayo kuhambelana nomgangatho weCFR iCandelo 21, iCandelo 177.2600. Ingasetyenziswa ngendlela efanayo nerabha ye-nitrile eqhelekileyo kodwa ifuna imvume ye-FDA.
PTFE PTFE
Isihlalo se-Teflon esilinganiswe kwiqondo lokushisa ngu-32 ¡ã C ukuya kwi-200 ¡ã C. Ukumelana okugqwesileyo kwiqondo lokushisa eliphezulu kunye nokubola kweekhemikhali. Ngenxa yoxinano oluphezulu lwepolytetrafluoroethylene, ukugqwesa okugqwesileyo, kodwa kunokuthintela ukubola kwemithombo yeendaba ezininzi zeekhemikhali.
I-TEFLON eqhubayo yimveliso ye-TEfloN eguquliweyo evumela ukuba okwangoku kudlule kwi-lining UKUSUSA UKUFUSWA KWE-TEfloN. Ngenxa ye-conductivity yayo, i-polytetrafluoroethylene eqhubayo ayinakuvavanywa nge-spark yombane.
I-polyteflon eyomeleziweyo RTFE
I-RTFE luhlengahlengiso lwemathiriyeli ye-PTFE. Nangona i-coefficient yokukhuhlana ye-PTFE ecocekileyo iphantsi kakhulu (0.02 ~ 0.04), kodwa ukunxiba kukhulu, kwaye ngenxa yokukhwela kwayo ngokulula, iipropathi ezibuthathaka zoomatshini, umthamo ophantsi wokuthwala, uzinzo olubi kunye nezinye iimpawu, njengesixhobo sokukhuhlana sinobukhulu obukhulu. imida. Ukuguqulwa kuphela, ngendlela yezinto eziphathekayo ukuhlangabezana neemfuno ezikhethekileyo zezixhobo zokutywina ezingagugiyo kuzo zonke iinkalo zobomi, ekuphuculeni ukunyanzeliswa kokunxiba kwe-PTFE, kunokuxutywa kunye nezinye izinto ezinxilisayo ezifana nefiber yeglasi, i-carbon fiber. , i-graphite, i-molybdenum disulfide, i-powder powder kunye nezinye iikhompawundi ze-organic, I-mesh joints yenziwa kwi-PTFE i-maleya yesakhiwo sokuphucula ukuqina, ukuqhutyelwa kwe-thermal, ukuxhathisa i-creep, kunye nokumelana nokunxiba.
Fluorine irabha Viton
Iqondo lobushushu elilinganiselweyo lesihlalo serabha yefluorine yi -18¡æ~150¡æ. IViton luphawu lwentengiso olubhalisiweyo lweNkampani yeDuPont, kwaye iFluorel luphawu lwentengiso olubhalisiweyo olulingana nerabha enefluorine ye3M Company. Esi sixhobo sinokumelana nobushushu obuphezulu kunye nokumelana nokugqwesa kweekhemikhali. Ifanelekile kwiimveliso ze-hydrocarbon, i-concentration ephantsi kunye ne-concentration ephezulu ye-mineral acids, kodwa kungekhona kwimidiya ye-steam kunye namanzi (ukunganyangeki kwamanzi).
Ultra high molecular ubunzima polyethylene UHMWPE
Izihlalo ze-polyethylene ezinobunzima obuphezulu bemolekyuli zilinganiswe ukusuka kwi -32 ¡ã C ukuya kwi-88 ¡ã C. Esi sixhobo sinokuxhathisa ubushushu obuphantsi kune-PTFE, kodwa sisenokumelana neekhemikhali. I-Uhmwpe ikwanayo nokumelana nokunxiba kakuhle kunye nokumelana nomhlwa, kwaye ingasetyenziswa kwiimeko zokunxiba okuphezulu.
I-Silicone irabha yobhedu I-Silicone
I-rubber ye-silicone ye-Copper i-polymer kunye namaqela e-organic, i-chain chain ephambili yenziwe nge-silicon kunye ne-athomu ye-oxygen. Iqondo lokushisa elilinganisiweyo livela kwi--100 ¡ã C ukuya kwi-300 ¡ã C. Inokumelana nokushisa okulungileyo kunye nokumelana nokushisa, ukusebenza okugqwesileyo kokufakelwa kombane kunye ne-inertness enkulu yeekhemikhali. Ifanelekile kwi-asidi ye-organic kunye ne-concentration ephantsi ye-asidi ye-inorganic, i-alkali ye-dilute kunye ne-alkali egxininisiweyo. Ukungalungi: amandla aphantsi oomatshini. Unyango lwe-post vulcanization luyafuneka.
Igraphite yeGrafite
Igraphite yikristale yekhabhoni, yinto engeyiyo isinyithi, umbala ongwevu wesilivere, umgangatho othambileyo, kunye nokucwebezela kwesinyithi. Ubunzima be-Mohs yi-1 ~ 2, ubunzima obuthile yi-2.2 ~ 2.3, kwaye ubuninzi bobuninzi bubonke yi-1.5~1.8. Inokumelana nobushushu obuphezulu, ukumelana ne-oxidation, ukuxhathisa ukubola, ukuxhathisa ukothuka kwe-thermal, ukomelela okuphezulu, ukuqina okuhle, amandla aphezulu okuzithambisa, ukuguquguquka okunamandla kwe-thermal, ukuhanjiswa kombane kunye nezinye iipropathi ezikhethekileyo zomzimba kunye neekhemikhali. Inokumelana ne-oxidation ekhethekileyo, i-self-lubricity kunye neplastiki kwiqondo lokushisa eliphezulu, kunye neempawu ezilungileyo zombane, ezishushu kunye nokubambelela. Ingasetyenziswa njenge-filler okanye i-IMPROver yokusebenza yerabha, iplastiki kunye nezixhobo ezahlukeneyo ezidibeneyo zokuphucula ukuxhathisa ukunxiba, ukumelana noxinzelelo okanye ukuhanjiswa kwezinto. I-valve gasket, ukupakishwa kunye nesihlalo zihlala zenziwe ngegraphite.
Igraphite yeqondo eliphezulu lokunyibilika, ukuya kwi3000 ¡æ phantsi kwevacuum iqala ukuthamba ithande ukunyibilika, igraphite evaporated sublimation ukuya kwi3600 ¡æ, imathiriyeli jikelele phantsi kwamandla obushushu aphezulu iyancipha kancinci kancinci, ngelixa igraphite eshushu ukuya kwi2000. ¡æ, amandla ayo bubushushu obuqhelekileyo obuphindwe kabini endaweni yoko, kodwa umahluko wokumelana ne-oxidation yereyithi ye-graphite oxidation yonyuka ngokuthe ngcembe ngeqondo lobushushu.
I-conductivity ye-thermal kunye ne-conductivity yombane ye-graphite iphezulu kakhulu, i-conductivity yayo iphindwe ka-4 ngaphezu kwensimbi engenasici, amaxesha ama-2 aphezulu kune-carbon steel, amaxesha angama-100 aphezulu kune-non-metal jikelele. conductivity yayo thermal, hayi kuphela ngaphezu kwentsimbi, intsimbi, ilothe kunye nezinye izinto zetsimbi, kodwa kunye nobushushu kwandisa conductivity thermal kuncipha, nto leyo eyahlukileyo kwizinto zentsimbi jikelele, kwiqondo lobushushu eliphezulu kakhulu, igraphite nkqu ithande ukuba adiabatic karhulumente. Ke ngoko, phantsi kweemeko zobushushu obuphezulu, ukusebenza kwegraphite ukugquma kunokwethenjelwa kakhulu. Igraphite ine-lubricity elungileyo kunye neplastiki, i-graphite friction coefficient ingaphantsi kwe-0.1, igraphite inokuphuhliswa ibe yi-permeable light sheet, kwinqanaba lokuqala lobunzima begraphite likhulu kakhulu, nangona izixhobo zedayimani kunzima ukuzisebenzisa. Igraphite inozinzo lwekhemikhali, ukuxhathisa kweasidi, ukuxhathisa kwealkali, ukuxhathisa kwi-organic solvents corrosion. Ngenxa yeepropathi ezibalaseleyo ezingasentla ezibalaseleyo zegraphite, kusetyenziso lwale mihla lwemizi-mveliso landa ngokugqwesileyo.
Imowudi yokudibanisa phakathi kwe-actuator yombane kunye nevalve nganye
I-actuator yombane ihambelana kakhulu nevalve, esetyenziswa kwinkqubo yokulawula ngokuzenzekelayo. Kukho iintlobo ezininzi zee-actuator zombane, ezahlukileyo kwindlela yokusebenza. Umzekelo, i-angular stroke actuator sisiphumo setorque engu-angular, ngelixa i-angular actuator yombane sisiphumo sokufuduswa kombane. Uhlobo lwe-actuator yombane kwisicelo senkqubo kufuneka lukhethwe ngokweemfuno zomsebenzi wevalve.
Indlela yokudibanisa
I. Uqhagamshelwano lweFlange:
Le yeyona ndlela ixhaphakileyo yoqhagamshelwano esetyenziswa kwiivalvu. Ngokobume bomphezulu odibeneyo, unokwahlulwa ngoku kulandelayo:
1. Uhlobo olugudileyo: lusetyenziselwa iivalvu ezinoxinzelelo oluphantsi. Ukuqhuba kakuhle
I-2, i-concave kunye ne-convex uhlobo: uxinzelelo oluphezulu lokusebenza, lunokusetyenziswa kwi-washer enzima
3. I-Tenon kunye nohlobo lwe-groove: i-gasket ene-deformation yeplastiki enkulu ingasetyenziselwa kwimidiya ephazamisayo, kwaye umphumo wokutywinwa ungcono.
I-4, uhlobo lwe-trapezoidal groove: kunye nentsimbi yentsimbi e-oval njenge-washer, esetyenziselwa uxinzelelo olusebenzayo lwe-64 kg / cm2 valve, okanye i-valve ephezulu yokushisa.
I-5, uhlobo lwe-lens: i-washer i-lens shape, eyenziwe ngesinyithi. Kwimivalo ephezulu yoxinzelelo oluphezulu kunye ne-100 kg / CM2, okanye i-valve ephezulu yokushisa.
I-6, uhlobo lwe-ring ye-O: Le yifom yokudibanisa i-flange entsha, iphuhliswa ngokubonakala kwee-rubber ezahlukeneyo ze-O ring, ikwisiphumo sokutywinwa kwefom yokudibanisa.
Eyesibini, uqhagamshelwano lomsonto:
Le yindlela elula yokudibanisa kwaye isetyenziswa rhoqo ngeevalve ezincinci. Kukho iimeko ezimbini ezongezelelweyo:
I-1, ukutywinwa ngokuthe ngqo: imicu yangaphakathi nangaphandle idlala ngokuthe ngqo indima yokutywinwa. Ukuze kuqinisekiswe ukuba i-joint ayivuzi, ngokuphindaphindiweyo ngeoli ye-lead, i-linoleum kunye ne-PTFE i-raw material ezaliswe; ibhanti Ptfe ekrwada, ukusetyenziswa ukwanda ukuthandwa; Esi sixhobo sinokumelana ne-corrosion, isiphumo sokutywinwa, kulula ukuyisebenzisa kunye nokugcina, ukuchithwa, kunokususwa ngokupheleleyo, kuba ifilimu engabonakaliyo, iphezulu kakhulu kwioli yokukhokela, i-linoleum.
2. Ukutywinwa ngokungathanga ngqo: amandla e-screw tightening adluliselwa kwi-washer phakathi kweendiza ezimbini, ukwenzela ukuba i-washer idlale indima yokutywina.
Eyesithathu, uqhagamshelwano lomkhono wekhadi:
Uqhagamshelo kunye nomgaqo wokutywina we-clamping sleeve kukuba xa i-nut iqinisiwe, umkhono wokubamba uphantsi koxinzelelo, ukwenzela ukuba umgca wayo ulume kudonga olungaphandle lombhobho, kunye ne-clamping sleeve cone yangaphandle isondele kwi-joint body cone. phantsi koxinzelelo, ngoko inokuthintela ngokuthembekileyo ukuvuza.
Iinzuzo zolu hlobo loqhagamshelwano zezi:
I-1, ubungakanani obuncinci, ubunzima obulula, isakhiwo esilula, ukuchithwa okulula;
I-2, uxhumano oluqinileyo, uluhlu olubanzi lokusetyenziswa, lunokumelana noxinzelelo oluphezulu (1000 kg / cm2), ubushushu obuphezulu (650¡æ) kunye nokungcangcazela
I-3, inokukhetha izinto ezahlukeneyo, ezifanelekileyo zokuthintela ukubola;
I-4, iimfuno zokuchaneka komatshini aziphezulu; Kulula ukuyifaka kwindawo ephakamileyo.
Ifomu yoqhagamshelo lomkhono wokugoba isetyenziswe kwiimveliso ezincinci zevalvu eTshayina.
Isine, uqhagamshelo lokubamba:
Le YINKQUBO YOKUQHAGAMSHELWA OKUKHAWULEZAYO EFUNA IBHUTI EZIMBINI KUPHELA KWAYE IFANELEKILEYO KWIIVAVAVA ZOXINZELELO EZISIBINI PHELA.
Isihlanu, uqhagamshelo lwangaphakathi lokuziqinisa:
Ngaphezulu kwazo zonke iintlobo zeefom zoqhagamshelwano, kukusetyenziswa kwamandla angaphandle ukuphelisa uxinzelelo oluphakathi, ukufezekisa ukutywinwa. Oku kulandelayo kuchaza uhlobo loqhagamshelo lokuziqinisa usebenzisa uxinzelelo oluphakathi. Umsesane wayo wokutywina ufakwe kwi-cone yangaphakathi, kunye necala eliphakathi elichaseneyo kwi-Angle ethile, uxinzelelo oluphakathi kwi-cone yangaphakathi, kwaye idluliselwe kwi-ring yokutywina, kwi-Angle ethile ye-cone surface, ivelise amacandelo amabini, enye ihambelana nayo. umgca osembindini womzimba wevalve ngaphandle, olunye uxinzelelo kudonga lwangaphakathi lomzimba wevalvu. Inxalenye yokugqibela ngamandla aziqinisayo. Uxinzelelo olukhulu oluphakathi, kokukhona amandla aziqinisayo. Ngoko olu hlobo loqhagamshelwano lufanelekile kwiivalve zoxinzelelo oluphezulu. Igcina izinto ezininzi kunye nomsebenzi kunoxhumo lwe-flanged, kodwa lufuna ubungakanani obuthile bokulayishwa kwangaphambili, ukwenzela ukuba uxinzelelo kwi-valve aluphezulu, ukusetyenziswa okuthembekileyo. Ivalve eyenziwe ngomgaqo wokuzitywina ngokuqhelekileyo yivalve yoxinzelelo oluphezulu.
Kukho iindlela ezininzi zokudibanisa i-valve, umzekelo, ezinye akufuneki ukuba zisuse i-valve encinci, edibeneyo kunye nombhobho; Ezinye iivalve ezingezizo ezentsimbi, usebenzisa uqhagamshelo lwesokhethi, njalo njalo. Abasebenzisi bevalvu kufuneka baphathwe ngokwemiqathango ethile.