Indlela yokukhetha ivalve efanelekileyo evela kumazwe angaphandle ngokuchanekileyo

(Inkcazo yesishwankathelo)Iivalvu ezingeniswa kumazwe angaphandle ikakhulu zibhekiselele kwiivalvu ezivela kwiibrendi zamazwe angaphandle, ingakumbi iibrendi zaseYurophu, zaseMelika kunye nezeJapan.

Iivalvu ezingeniswa kumazwe angaphandle ikakhulu zibhekiselele kwiivalvu ezivela kwiibrendi zamazwe angaphandle, ingakumbi iibrendi zaseYurophu, zaseMelika kunye nezeJapan. Iindidi zemveliso yeevalvu ikakhulu ziquka iivalvu zebhola ezingeniswa kumazwe angaphandle, iivalvu zokumisa ezingeniswa kumazwe angaphandle, iivalvu ezilawulayo ezingeniswa kumazwe angaphandle, iivalvu zebhabhathane ezingeniswa kumazwe angaphandle, iivalvu zokunciphisa uxinzelelo ezingeniswa kumazwe angaphandle, iivalvu ze-solenoid ezingeniswa kumazwe angaphandle, njl. , indlela yokudibanisa, indlela yokusebenza, njl. Kufuneka ukhethe i-valve efanelekileyo ngokweemfuno zangempela kunye neempawu zemveliso.
1. Iimpawu zevalve engenisiweyo ziquka iimpawu zokusetyenziswa kunye neempawu zesakhiwo

1. Sebenzisa iimpawu zeevalvu ezithunyelwa ngaphandle

Iimpawu zokusetyenziswa zinquma ukusebenza kokusetyenziswa okuphambili kunye nobubanzi bevalve. Iimpawu zokusetyenziswa kwevalve ziquka: udidi lwevalve (ivalve yesiphaluka evaliweyo, ivalve yokulawula, ivalve yokhuseleko, njl.); uhlobo lwemveliso (ivalve yesango, ivalve yeglowubhu, ivalve yebhabhathane, ivalve yebhola, njl.); ivalve Izinto eziphathekayo zamalungu aphambili (umzimba wevalvu, ibhonethi, isiqu sevalvu, idiski yevalvu, indawo yokutywina); imowudi yothumelo lwevalvu, njl.

2. Iimpawu zesakhiwo

Iimpawu zesakhiwo zinquma ezinye iimpawu zesakhiwo sofakelo lwevalve, ukulungiswa, ukugcinwa kunye nezinye iindlela. Iimpawu zesakhiwo zibandakanya: ubude besakhiwo kunye nokuphakama okupheleleyo kwevalve, ifom yokudibanisa kunye nombhobho (uxhulumaniso lwe-flange, uxhulumaniso lwe-threaded, uxhumano lwe-clamp, uxhumano lwangaphandle lwe-Threaded, uxhumano lwe-welding end, njl.); ifom yokutywina (i-ring inlay, ring threaded, i-surfacing, i-welding yokutshiza, i-valve body); isakhiwo se-valve stem (intonga ejikelezayo, intonga yokuphakamisa), njl.

Okwesibini, amanyathelo okukhetha ivalve

Cacisa injongo yesivalo kwisixhobo okanye isixhobo, kwaye unqume iimeko zokusebenza zevalve: i-medium esebenzayo, uxinzelelo lokusebenza, ukushisa okusebenzayo, njl. umzekelo, ukuba ufuna ukukhetha ivalve yokumisa i-LIT yaseJamani, qinisekisa ukuba i-medium yi-steam, kwaye umgaqo osebenzayo ngu-1.3Mpa, ubushushu obusebenzayo yi-200 ℃.

Ukugqiba i-diameter yegama kunye nendlela yokudibanisa yombhobho odibeneyo kwi-valve: i-flange, intambo, i-welding, njl. umzekelo, khetha ivalve yokuvala yokungena kwaye uqinisekise ukuba indlela yoqhagamshelo iflenji.

Ukumisela indlela yokusebenzisa ivalve: manual, electric, electromagnetic, pneumatic okanye hydraulic, electro-hydraulic linkage, njl.; umzekelo, ivalve yesandla yokuvala - yokucima ikhethiwe.

Qinisekisa imathiriyeli yeqokobhe levalvu ekhethiweyo kunye namalungu angaphakathi ngokuphakathi, uxinzelelo olusebenzayo kunye nobushushu obusebenzayo bombhobho: intsimbi etyhidiweyo, intsimbi yekhabhoni, insimbi engenasici, intsimbi yealloyi, iasidi engatyiwa - , i-ductile cast iron, i-alloy yobhedu, njl.; njengesixhobo sentsimbi esikhethiweyo kwivalve yeglowubhu.

Khetha uhlobo lwevalve: ivalve yesiphaluka evaliweyo, ivalve elawulayo, ivalve yokhuseleko, njl.;

Qinisekisa uhlobo lwevalve: ivalve yesango, ivalve yeglowubhu, ivalve yebhola, ivalve yebhabhathane, ivalve ye-throttle, ivalve yokhuseleko, ivalve yokunciphisa uxinzelelo, i-steam trap, njl.;

Qinisekisa iiparameters zevalve: Kwiivalvu ezizenzekelayo, okokuqala misela ukuxhathisa okuvumelekileyo, umthamo wokukhupha, uxinzelelo lwangasemva, njl.njl ngokweemfuno ezahlukeneyo, kwaye emva koko unqume ubungakanani obuqhelekileyo bombhobho kunye nobubanzi bomngxuma wesihlalo sevalve;

Ukumisela iiparamitha zejometri zevalve ekhethiweyo: ubude besakhiwo, ifom yokudibanisa i-flange kunye nobukhulu, ubungakanani bokuphakama kwevalve emva kokuvula nokuvalwa, ukudibanisa ubungakanani bomngxuma we-bolt kunye nenombolo, ubungakanani be-valve jikelele, njl.

Sebenzisa ulwazi olukhoyo: iikhathalogu imveliso valve, iisampuli imveliso valve, njl ukukhetha iimveliso ivalve ezifanelekileyo.

Okwesithathu, isiseko sokukhetha iivalve

Injongo, iimeko zokusebenza, kunye neendlela zokulawula ivalve ekhethiweyo;

Ubume bomsebenzi osebenzayo: uxinzelelo olusebenzayo, ubushushu bokusebenza, ukusebenza kwe-corrosion, nokuba iqulethe amasuntswana aqinileyo, ingaba i-medium inetyhefu, ingaba yinto evuthayo okanye eqhumayo, i-viscosity ye-medium, njl.; umzekelo, ukuba ufuna ukukhetha ivalve ye-solenoid evela kumazwe angaphandle kwi-LIT, indawo ephakathi Ukongeza kwindawo enokutsha kunye nesiqhushumbisi, isiqhushumbisi-ivalve yesolenoid yobungqina ikhethwa gabalala; omnye umzekelo kukukhetha ivalve yebhola yeGerman Lit LIT. Indawo ephakathi iqulathe amasuntswana aqinileyo, kunye nevalve yebhola evaliweyo engu-V-etywiniweyo ikhethwa ngokubanzi.

Iimfuno zeempawu ze-valve fluid: ukumelana nokuhamba, umthamo wokukhupha, iimpawu zokuhamba, inqanaba lokutywina, njl.;

Iimfuno zemilinganiselo yokufakela kunye nemilinganiselo yangaphandle: i-diameter ye-nominal, indlela yokudibanisa kunye nemilinganiselo yokudibanisa kunye nombhobho, imilinganiselo yangaphandle okanye izithintelo zobunzima, njl.;

Iimfuno ezongezelelweyo zokuthembeka kwemveliso yevalve, ubomi benkonzo, kunye nokuqhuma-ubungqina bokusebenza kwezixhobo zombane (qaphela xa ukhetha iiparamitha: Ukuba ivalve iza kusetyenziselwa iinjongo zolawulo, ezi parameters zongezelelweyo zilandelayo kufuneka zimiselwe: indlela yokusebenza, ubuninzi kunye nokuhamba okuncinci. iimfuno , Ukuhla koxinzelelo lokuhamba okuqhelekileyo, ukuhla koxinzelelo xa uvala, ubuninzi kunye nobuncinci be-inlet ye-valve).

Ngokwezi siseko zikhankanywe apha ngasentla kunye namanyathelo okukhetha iivalvu, kuyimfuneko ukuba nengqiqo ecacileyo yesakhiwo sangaphakathi seentlobo ezahlukeneyo zeevalvu xa ukhetha iivalve ngokufanelekileyo nangokuchanekileyo, ukuze wenze isigqibo esichanekileyo kwivalve ekhethiweyo.

Ulawulo lokugqibela lombhobho yivalve. Ivalve yokuvula kunye neendawo zokuvala zilawula indlela yokuhamba kwendawo ephakathi kumbhobho. Ubume bendlela yevalvu yenza ukuba ivalve ibe nophawu oluthile lokuqukuqela. Oku kufuneka kuthathelwe ingqalelo xa ukhetha ivalve efanelekileyo kakhulu yenkqubo yombhobho.
Shwankathela kwaye ushwankathele izinto ezininzi eziphambili zokukhetha: misela ukuba yintoni umsebenzi wevalve oza kuyikhetha, uqinisekise ubushushu kunye noxinzelelo lwe-medium, uqinisekise isantya sokuhamba kwevalve kunye nobubanzi obufunekayo, uqinisekise izinto zevalve, kunye nendlela yokusebenza;