Electronic modulating Control Valve
Txheej txheem cej luam
Regulating valve, tseem hu ua tswj valve, yog cov cuab yeej siv hluav taws xob ua haujlwm los hloov cov dej ntws hauv cov txheej txheem txheej txheem. Lub International Electrotechnical Commission (IEC) txhais lub regulating valve [hu ua Control Valve txawv teb chaws] raws li: "Nws muaj xws li ib tug net tivthaiv, ib tug sab hauv valve lub cev tivthaiv uas hloov cov ndlwg tus nqi ntawm cov txheej txheem kua, thiab ib los yog ntau tshaj actuators. Tus actuator yog siv los teb cov teeb liab xa los ntawm kev tswj hwm lub valve yog tsim los ntawm tus actuator thiab lub valve tivthaiv yog lub tshuab tsav tsheb ntawm lub regulating valve thawb pas nrig kom txav mus ib ntus, yog li tsav lub valve tseem ceeb ntawm kev tswj lub valve kom txav mus los Lub valve tivthaiv yog qhov kev tswj ntawm qhov kev tswj lub valve Nws ncaj qha cuam tshuam nrog nruab nrab los ntawm kev hloov pauv ntawm lub actuator laub pas nrig kom hloov qhov throttling cheeb tsam. Lub regulating valve kom ua tiav lub hom phiaj ntawm kev tswj cov li qub feem ntau muab faib ua pneumatic regulating li qub, hluav taws xob tswj li qub thiab hydraulic regulating li qub raws li lawv lub zog. Qhov txawv yog nyob rau hauv lub actuator lawv nruab nrog. Lub pneumatic tswj valve siv compressed cua raws li lub hwj chim qhov chaw thiab yog nruab nrog ib tug pneumatic actuator. Lub tshuab hluav taws xob tswj valve siv hluav taws xob raws li lub zog hluav taws xob thiab nruab nrog lub tshuab hluav taws xob; hydraulic tswj valve siv hydraulic siab raws li lub hwj chim qhov chaw thiab yog nruab nrog ib tug hydraulic actuator. Raws li kev xav tau, lub valve tswj tau tuaj yeem nruab nrog ntau yam khoom siv los ua kom yooj yim siv thiab ua tiav ntau dua hauv kev ua haujlwm. Cov khoom siv no muaj xws li valve positioners, handwheel mechanisms, hluav taws xob converters, thiab lwm yam.
Valve Lub Cev Form
Ncaj nraim ntawm lub cev valve
Lub cev ncaj nraim ntawm lub cev muaj S streamlined channel, nrog cov phab ntsa du thiab sib npaug sib npaug. Nws muaj cov yam ntxwv ntawm me me siab poob poob, loj txaus tus nqi thiab du ntws.
Lub cev valve
Lub kaum sab xis lub cev yog tib yam nkaus li qhov ncaj-los ntawm lub cev lub cev tshwj tsis yog tias nws cov duab yog lub kaum sab xis. Nws muaj cov yam ntxwv ntawm cov qauv compact, yooj yim khiav txoj kev thiab tsis muaj zog. Nws yog tshwj xeeb tshaj yog haum rau kev ua hauj lwm tej yam kev mob xws li yooj yim coking, yooj yim clogging, thiab siab viscosity.
Peb-txoj kev valve lub cev
Peb-txoj kev valve lub cev muab faib ua ob hom: converging thiab diverting. Nws yog tsuas yog siv rau proportional adjustment los yog bypass hloov. Nws siv qhov chaw me me thiab muaj tus nqi qis.
Z hom valve lub cev
Z-shaped valve lub cev yog tsim nyog rau kev ua haujlwm siab. Nws yog tsim los ntawm ib qho forging thiab muaj kev ua haujlwm siab zoo. Txoj hauv kev ntws sab hauv yog yooj yim thiab tsis yooj yim rau vortex, backflow thiab lwm yam tshwm sim. Txo qhov muaj peev xwm ntawm flash evaporation thiab cavitation nyob rau hauv kev kub siab sib txawv.
Valve Bonnet Form
Standard valve lub kaus mom
Tus txheej txheem valve bonnet yog ib txwm kub siab lub valve cover. Cov khoom ntawm lub pob valve yog raws nraim tib yam li ntawm lub valve lub cev, uas plays lub luag hauj lwm ntawm kaw lub valve lub cev thiab actuator. Ua haujlwm kub: -30 degree -260 degree
High kub valve lub kaus mom
Qhov kub-kub valve lub kaus mom tshwj xeeb yog tsim los rau kev ua haujlwm kub kub. Qhov chaw sib cuag ntawm lub valve bonnet thiab cov huab cua ib puag ncig yog nce los ntawm lub dab dej kub kom dissipate cua sov. Nws tuaj yeem tiv thaiv cov khoom ntim thiab actuator zoo. Ua haujlwm kub: +230 degree -530 degree
Tsawg kub extendable valve bonnet
Qhov qis-kub txuas ntxiv valve bonnet yog tsim rau kev tshaj tawm hauv qhov kub thiab txias (kua oxygen, kua nitrogen). Hom valve sab sauv lub kaus mom no tuaj yeem tiv thaiv cov khoom ntim thiab actuator zoo. Cov khoom siv tus qauv yog 304 lossis 316. Cov khoom siv nrog cov sib txawv expansion coefficients kuj siv tau raws li kev ua haujlwm. Ua haujlwm kub: -196 degree -45 degree
Hlau bellows sealing valve bonnet
Cov hlau bellows sealing valve npog yog nruab nrog stainless hlau bellows tivthaiv kom cais cov nruab nrab ntawm lub ntiaj teb sab nraud thiab xyuas kom meej tias lub valve qia txav nce thiab nqis. Tsis tas li ntawd, ib lub thawv ntim khoom ntim tau muab tso rau hauv lub hau npog sab sauv kom ntseeg tau tias tsis muaj pov tseg, kev sib tsoo lossis ib puag ncig muaj kuab paug yuav tshwm sim los ntawm qhov nruab nrab ntawm qhov xau. Ua haujlwm kub: -60 degree -530 degree
Xaiv cov khoom siv lub cev valve
Cov khoom siv kub kub
Raws li cov khoom siv kub-kub, lub zog-kub kub, kev hloov pauv hauv metallographic qauv ntawm qhov kub thiab txias, thiab corrosion kuj yuav tsum tau txiav txim siab tag nrho. Nws yog feem ntau yuav tsum tau cov ntaub ntawv hlau alloy muaj chromium, nickel, thiab molybdenum cov ntsiab lus. Tsis tas li ntawd, ntawm qhov kub thiab qhov siab, cov hlau yog corroded los ntawm hydrogen, uas feem ntau ua rau decarburization thiab embrittlement. Tom qab cov ntsiab lus hlau xws li chromium, npib tsib xee, thiab molybdenum tau ntxiv rau cov hlau, nws txuas nrog cov ntsiab lus carbon los txhim kho hydrogen corrosion kuj ntawm hlau.
Cryogenic cov ntaub ntawv
Thaum xaiv cov ntaub ntawv uas tsis muaj qhov kub thiab txias, qhov cuam tshuam ntawm qhov ntsuas kub ntawm cov khoom yuav tsum tau txiav txim siab tag nrho, nrog rau cov teeb meem brittleness ntawm txo cov tawv nqaij ntawm qhov kub thiab txias. Yog li ntawd, cov ntaub ntawv siv nyob rau hauv qis-kub tej yam kev mob yuav tsum muaj txaus toughness ntawm tsawg kub. Cov khoom siv hlau uas xaiv rau cov li qub ntawm qhov kub sib txawv yuav tsum ua kom tau raws li qhov cuam tshuam lub zog uas tau teev tseg los ntawm cov qauv ntawm lawv qhov ntsuas kub kom muaj kev nyab xeeb thiab txhim khu kev qha. Austenitic stainless hlau muaj qhov ruaj khov qis-kub txhua yam khoom, yog li nws feem ntau siv.
Cavitation resistant khoom
Thaum cov kua dej yog kua, tshwj xeeb tshaj yog thaum flash evaporation los yog cavitation tshwm sim, cavitation kuj ntawm cov khoom yuav tsum tau txiav txim siab tag nrho. Cavitation-resistant cov ntaub ntawv feem ntau muab faib ua ob hom: a. High hardness cov ntaub ntawv. (Kev kho cua sov nce hardness); b. Cov ntaub ntawv uas muaj zog oxide txheej, toughness thiab qaug zog. (Kev kho cua sov saum npoo txhim kho qhov tawv tawv ntawm cov khoom); c. Ib nrab hardened cov ntaub ntawv. (kev kho saum npoo);
Corrosion-resistant cov ntaub ntawv
Tus nqi ntawm corrosion ntawm cov ntaub ntawv hlau feem ntau yog muab faib ua feem ntau corrosion, crevice corrosion, intergranular corrosion, qhov corrosion, kev nyuaj siab corrosion, thiab lwm yam. Tsis muaj cov khoom yuav tiv taus txhua yam corrosion. Qhov tseeb, corrosiveness ntawm cov ntaub ntawv kuj muaj feem xyuam rau hom, concentration, thiab kub ntawm cov kua, thiab seb cov kua muaj oxidants thiab txaus tus nqi, thiab lwm yam, uas ua rau cov kev xaiv ntawm cov ntaub ntawv nyuaj. Feem ntau siv cov khoom siv corrosion-resistant rau kev tswj li qub yog cov ntaub ntawv tseem ceeb xws li PTFE thiab F46, lossis cov hlau tshwj xeeb xws li tus nqi siab dua austenitic stainless hlau, 20# alloy steel, Hastelloy B, Hastelloy C, thiab titanium.
Valve Internal Component Materials
Txoj kev tseem ceeb ntawm kev kho hardening
Feem ntau siv cov khoom siv hauv lub valve yog SUS304, SUS316, SUS316L, SUS410, SUS420, thiab lwm yam, thiab ua tiav raws li cov dej sib txawv. Txhawm rau tswj cov kua dej cavitation, cov kua dej uas muaj cov khoom muaj zog, thiab cov xwm txheej kub thiab kub siab, lawv yuav tsum tau ua kom tawv. kev kho mob kom ntev lub neej kev pab cuam ntawm lub valve.
Kev kho cua sov
a.304/316 cov khoom siv kho mob Cov khoom siv no yog austenitic stainless hlau thiab feem ntau yog siv rau hauv kev ua haujlwm uas qhov nruab nrab yog corrosive lossis hauv qhov kub thiab txias. Thaum qhov nruab nrab yog corrosive heev, kev kho yuav tsum tau nqa tawm. Lub hom phiaj ntawm kev kho tshuaj yog los txhim kho cov hardness thiab corrosion kuj ntawm cov khoom. Qhov kub thiab txias -196 ~ 530 degree
b.410/420 quenching thiab tempering kho (quenching + tempering) Cov khoom ntawm no series yog martensitic stainless hlau, uas yog ib qho zoo heev cavitation-resistant khoom. Nws yuav tsum tau quenched thiab tempered thaum siv nyob rau hauv high-temperature thiab high-pressure sib txawv. Lub hom phiaj ntawm quenching thiab tempering kev kho mob yog los txhim kho cov hardness ntawm cov khoom thiab ua kom nws lub neej kev pab nyob rau hauv hnyav ua hauj lwm tej yam kev mob. Qhov kub thiab txias -45 ~ 425 degree
c.17-4PH nag lossis daus hardening kev kho mob sib txawv thiab ntau npaum li cas ntawm ntxiv dag zog rau cov tshuaj muaj pes tsawg leeg ntawm stainless hlau, thiab ntau hom thiab ntau npaum ntawm carbides, nitrides, carbides thiab intermetallic compounds yog precipitated los ntawm cov nag lossis daus hardening txheej txheem, uas tsis tsuas yog txhim kho lub zog ntawm cov hlau, tab sis tswj kom txaus toughness. Ib hom high-strength stainless hlau, hu ua nag lossis daus hardening. Qhov kub thiab txias -45 ~ 425 degree
Kev kho deg hardening
Kev kho cua sov saum npoo yog muab faib ua ob pawg: nto quenching thiab deg tshuaj kho cua sov. ib. Nplaim cua sov nto quenching, tiv tauj hluav taws xob cua sov nto quenching, induction cua sov nto quenching, thiab lwm yam b. Carburizing, nitriding, carbonitriding, chromium boronizing, tooj liab infiltrating, thiab lwm yam.
Surface kho
Stellite cladding (lub ntsiab Cheebtsam Co, Cr, W) yog ib tug nquag siv hardening txoj kev kho nrog zoo heev corrosion kuj. Muaj ob txoj hauv kev ntawm Stellite surfacing: tag nrho surfacing thiab ib nrab surfacing. Tsis muaj cov txheej txheem kev cai rau cov txheej txheem surfacing tshwj xeeb. Nws feem ntau yog nyob ntawm qhov sib txawv thiab qhov kub thiab txias ntawm cov kua dej thiab seb cov kua dej puas muaj cov khoom. Cov hom ntawm surfacing welding yog raws li nram no:
Kev xaiv cov khoom sib khi hauv lub Valve
Taw qhia txog kev sib npaug sealing nplhaib
Spring-actuated PTFE seals yog cov ntsaws ruaj ruaj nrog lub caij nplooj ntoos hlav tshwj xeeb hauv U-shaped PTFE. Tsim nyog lub caij nplooj ntoos hlav quab yuam ntxiv rau qhov system ntws siab yuav thawb tawm lub sealing nto thiab maj mam nias lub kaw ntom nti kom tsim tau cov nyhuv sealing zoo heev. Lub sealing nto yog qhov ua tau zoo luv luv thiab tuab, yog li txo qhov kev sib txhuam thiab txuas lub neej kev pab cuam.
Cim npe nrov: linear-tig kub tswj roj siab nyem valve, Tuam Tshoj, tuam ntxhab, lwm tus muag khoom, Hoobkas, yuav, nqe, hais
