A stopcockvalve yog [1] lub valve ncaj nraim uas qhib thiab kaw sai, thiab tseem yog feem ntau siv rau kev tshaj tawm nrog cov khoom raug tshem tawm vim yog qhov cuam tshuam ntawm kev txav ntawm cov ntsia hlau foob qhov chaw thiab ua tiav kev tiv thaiv tiv thaiv kev sib cuag nrog qhov nruab nrab ntws thaum qhib tag nrho. Lwm qhov tseem ceeb tshaj plaws yog tias nws yooj yim los hloov mus rau ntau qhov kev tsim kho, kom ib lub valve tuaj yeem tau txais ob, peb, lossis plaub qhov sib txawv ntws. Qhov no ua kom yooj yim rau kev tsim cov kav dej, txo cov khoom siv li qub, thiab txo qee qhov kev sib txuas uas yuav tsum tau ua hauv cov khoom siv.
Nws ua haujlwm li cas Valves nrogstopcocklub cev nrog lub qhov los ntawm qhov qhib thiab kaw qhov chaw. Lub cev ntsaws lub cev tig nrog [2] qia kom ua tiav qhov qhib thiab kaw. Lub me me, unpacked, ntsaws valve tseem hu ua "cocker". Plug lub cev ntawm lub ntsaws valve feem ntau yog lub khob hliav qab (tseem muaj lub cev cylindrical), uas yog txuam nrog lub conical orifice nto ntawm lub valve lub cev los tsim ib khub sealing. Lub ntsaws valve yog hom qub tshaj plaws ntawm lub valve siv, nrog cov qauv yooj yim, qhib thiab kaw nrawm, thiab tsis muaj dej tsis kam. Ordinary ntsaws li qub cia siab rau kev sib cuag ncaj qha ntawm lub cev tiav hlau ntsaws lub cev thiab lub valve lub cev kom kaw, yog li lub sealing tsis zoo, qhov qhib thiab kaw quab yuam loj, hnav yooj yim, thiab feem ntau tsuas yog siv tau rau hauv qhov siab (tsis siab tshaj 1 megapascal) thiab txoj kab uas hla me me (tsawg dua 100 mm) qee zaus.
Classify
Raws li cov qauv tsim, nws tuaj yeem muab faib ua plaub hom: nruj ntsaws valve, nws tus kheej-sealing ntsaws valve, ntsaws valve thiab roj txhaj ntsaws valve. Raws li daim ntawv channel, nws tuaj yeem muab faib ua peb hom: ncaj nraim-los ntawm plug valve, peb-txoj kev stopcock valve thiab plaub-txoj kev ntsaws valve. Kuj tseem muaj lub raj ntsaws li qub.
Plug li qub yog cais los ntawm kev siv xws li: mos foob ntsaws li qub, roj-lubricated tawv foob ntsaws li qub, poppet ntsaws li qub, peb-txoj kev thiab plaub-txoj kev ntsaws li qub.
Qhov zoo
1. Lub ntsaws valve yog siv rau kev ua haujlwm nquag, thiab qhov qhib thiab kaw yog ceev thiab lub teeb.
2. Cov dej tsis kam ntawm lub ntsaws valve yog me me.
3. Lub ntsaws valve muaj cov qauv yooj yim, kuj me me, lub teeb yuag thiab yooj yim txij nkawm.
4. Kev ua haujlwm zoo sealing.
5. Nws tsis yog txwv los ntawm kev taw qhia kev teeb tsa, thiab cov kev taw qhia ntws ntawm qhov nruab nrab tuaj yeem ua tau raws li qhov xav tau.
6. Tsis muaj kev vibration, tsis tshua muaj suab nrov.
Soft-seal gate valves
Mos foob rooj vag valve, muaj valve, mos foob rooj vag valve qhib thiab kaw qhov chaw yog rams, cov kev taw qhia ntawm kev txav ntawm lub ram yog perpendicular mus rau cov kev taw qhia ntawm cov kua, lub rooj vag valve tsuas yog qhib thiab kaw, tsis tuaj yeem kho thiab throttled. Lub ram muaj ob qhov chaw sib khi, feem ntau siv hom rooj vag valve ob qhov chaw sib khi ua ib lub voj voog, lub kaum sab xis sib txawv nrog lub valve tsis, qhov nominal txoj kab uas hla yog DN50 ~ DN1200, kev khiav hauj lwm kub: ≤200 ° C.
Cov ntsiab lus ntawm cov khoom
Lub rooj vag phaj ntawm lub wedgelaj valve tuaj yeem ua rau tag nrho, uas yog hu ua lub rooj vag nruj; Nws tseem tuaj yeem ua rau hauv ib lub ram uas tuaj yeem tsim me ntsis ntawm deformation los txhim kho nws cov khoom tsim tau thiab tsim kom muaj qhov sib txawv ntawm lub sealing nto lub kaum sab xis hauv cov txheej txheem ua, uas yog hu ua elastic ram.
Mos foobrooj vag li qubmuab faib ua ob hom: qhib pas nrigsoft seal rooj vag valvethiab tsaus pas nrig mos foobrooj vag valve. Feem ntau muaj cov xov trapezoidal ntawm lub lifting pas nrig, uas hloov cov lus tsa suab mus rau hauv cov lus tsa suab los ntawm cov txiv ntoo nyob rau hauv nruab nrab ntawm lub ram thiab cov lus qhia zawj ntawm lub valve lub cev, uas yog, kev khiav hauj lwm torque rau hauv kev khiav hauj lwm thrust. Thaum lub valve qhib, thaum lub ram nqa qhov siab yog sib npaug rau 1: 1 lub sij hawm lub valve txoj kab uas hla, qhov ntws ntawm cov kua dej tsis muaj kev cuam tshuam kiag li, tab sis txoj hauj lwm no tsis tuaj yeem saib xyuas thaum lub sijhawm ua haujlwm. Hauv kev siv tiag tiag, nws yog cim los ntawm lub vertex ntawm qia, uas yog, txoj haujlwm uas tsis tuaj yeem qhib tau, raws li nws txoj haujlwm qhib tag nrho. Txhawm rau kom tau txais kev kaw-nce vim qhov ntsuas kub hloov pauv, feem ntau nws qhib rau lub apex txoj hauj lwm thiab tom qab ntawd revened rov qab 1 / 2-1 tig raws li txoj hauj lwm ntawm lub siab qhib valve. Yog li ntawd, lub siab qhib txoj hauj lwm ntawm lub valve yog txiav txim los ntawm txoj hauj lwm ntawm lub ram (xws li mob stroke). Hom valve no feem ntau yuav tsum tau teeb tsa kab rov tav hauv cov kav dej.
Kev Xav Tau
1. Cov specifications thiab pawg ntawmsoft seal rooj vag li qubyuav tsum ua tau raws li cov cai ntawm cov ntaub ntawv tsim cov kav dej.
2. Tus qauv ntawm cov mos mos lub rooj vag valve yuav tsum qhia lub teb chaws tus qauv tus lej raws li nws. Yog tias nws yog tus qauv kev lag luam, cov lus piav qhia txog tus qauv yuav tsum tau qhia.
3. Kev ua haujlwm siab ntawm lubsoft seal rooj vag valveYuav tsum muaj kev ua haujlwm siab ntawm ≥ kav dej, tsis muaj kev cuam tshuam rau tus nqi, kev ua haujlwm siab uas lub valve tuaj yeem dais yuav tsum siab tshaj qhov ua haujlwm siab ntawm lub raj xa dej, thiab txhua sab ntawm lub qhov rooj kaw qhov muag yuav tsum tuaj yeem tiv taus 1.1 npaug ntawm kev ua haujlwm siab ntawm lub valve yam tsis muaj to;
4. Cov txheej txheem tsim khoom ntawmsoft seal rooj vag valveyuav tsum tau qhia lub teb chaws tus qauv raws li nws, thiab yog hais tias nws yog ib qho kev lag luam tus qauv, cov ntaub ntawv lag luam yuav tsum tau txuas nrog rau daim ntawv cog lus.
Thib ob, cov khoom siv foob pob valve
1. Cov khoom siv ntawm lub cev valve yuav tsum yog cam khwb cia hlau, cam khwb cia hlau, stainless hlau, 316L, thiab qib thiab cov ntaub ntawv kuaj lub cev thiab tshuaj ntawm cov hlau cam yuav tsum tau qhia.
2. Cov khoom siv qia yuav tsum siv zog rau cov kav hlau tsis muaj steel (2CR13), thiab qhov loj-inch valve yuav tsum yog stainless hlau inlaid qia.
3. Cov txiv ntoo yog ua los ntawm cam khwb cia txhuas tooj dag los yog cam khwb cia txhuas bronze, thiab lub hardness thiab lub zog yog ntau dua li ntawm lub valve qia.
4. Lub hardness thiab lub zog ntawm cov qia bushing yuav tsum tsis txhob ntau tshaj li ntawm lub valve qia, thiab yuav tsum tsis txhob muaj electrochemical corrosion nrog lub valve qia thiab valve lub cev nyob rau hauv cov kev mob ntawm dej immersion.
5. Cov khoom ntawm lub sealing nto
(1) Hom mos foobrooj vag valves sib txawv, thiab cov txheej txheem sealing thiab cov khoom yuav tsum tau sib txawv;
(2) Rau qhov zoo tib yam wedge qhov rooj li qub, cov khoom siv, kho txoj kev thiab kev sib tsoo ntawm lub nplhaib tooj liab yuav tsum tau piav qhia;
(3) Cov ntaub ntawv soj ntsuam Physicochemical thiab kev tu cev ntawm cov ntaub ntawv mos mos lub rooj vag valve thiab valve phaj hauv ob sab phlu khoom;
6. Valve ncej packing
(1) Vim lub foob mosrooj vag valvenyob rau hauv cov yeeb nkab network feem ntau tsis tshua muaj qhib thiab kaw, cov ntim khoom yuav tsum tsis muaj zog rau ntau xyoo, thiab cov khoom ntim tsis muaj hnub nyoog, thiab cov nyhuv sealing yog khaws cia ntev;
(2) Lub pob valve yuav tsum nyob ruaj khov thaum nws raug qhib thiab kaw ntau zaus;
(3) Raws li cov kev xav tau saum toj no, lub valve ncej packing siv zog tsis tau hloov lub neej los yog ntau tshaj kaum xyoo;
(4) Yog tias cov khoom ntim yuav tsum tau hloov pauv, qhov tsim ntawm lub pneumatic valve yuav tsum xav txog cov kev ntsuas uas tuaj yeem hloov tau raws li cov dej siab.
Thib peb, kev khiav hauj lwm mechanism ntawm lub foob mosrooj vag valve
3.1 Qhov qhib thiab kaw kev taw qhia ntawm lub qhov rooj muag muag lub qhov rooj valve thaum lub sijhawm ua haujlwm yuav tsum raug kaw clockwise.
3.2 Vim hais tias lub pneumatic valve nyob rau hauv cov yeeb nkab network feem ntau manually qhib thiab kaw, tus naj npawb ntawm qhib thiab kaw revolutions yuav tsum tsis txhob ntau dhau, uas yog, lub loj-inch valve yuav tsum nyob rau hauv 200-600 revolutions.
3.3 Txhawm rau pab txhawb kev qhib thiab kaw ntawm ib tus neeg, qhov siab tshaj plaws qhib thiab kaw torque yuav tsum yog 240N-m nyob rau hauv cov xwm txheej ntawm cov kav dej.
3.4 Qhov qhib thiab kaw ua haujlwm kawg ntawm lub qhov rooj kaw qhov muag yuav tsum yog square tenon, thiab qhov loj yuav tsum tau ua qauv, thiab fim hauv av, kom cov neeg tuaj yeem ua haujlwm ncaj qha los ntawm hauv av. Valves nrog cov discs tsis haum rau siv nyob rau hauv underground networks.
3.5 zaub vaj huam sib luag ntawm qhov qhib thiab kaw degree ntawm mos foobrooj vag valve
(1) Lub ntsuas ntsuas ntawm qhov qhib thiab kaw qhov ntsuas qhov muag ntawm lub qhov rooj kaw qhov muag yuav tsum tau muab pov rau ntawm lub iav npog los yog ntawm lub plhaub ntawm cov duab disc tom qab hloov cov kev taw qhia, tag nrho cov ntsia hlau ntsia hauv av, thiab lub ntsuas ntsuas yuav tsum tau txhuam nrog phosphors kom pom qhov muag pom;
(2) Cov khoom siv ntawm qhov taw qhia disc koob tuaj yeem ua los ntawm stainless hlau phaj raws li kev tswj xyuas zoo, txwv tsis pub nws yog xim hlau phaj, thiab yuav tsum tsis txhob ua los ntawm txhuas daim tawv nqaij;
(3) Qhov taw qhia disc koob yog qhov muag pom, ruaj khov, thaum qhib thiab kaw qhov kev hloov kho yog qhov tseeb, nws yuav tsum muab xauv nrog rivets.
3.6 Yog hais tias lub qhov rooj qhib qhov rooj kaw qhov tob tob, thiab qhov kev ncua deb ntawm kev khiav hauj lwm mechanism thiab cov khoom vaj huam sib luag thiab hauv av yog ≥1.5m, nws yuav tsum tau nruab nrog ib qho chaw txuas ntxiv, thiab nws yuav tsum tau kho kom ruaj khov kom cov neeg tuaj yeem saib xyuas thiab ua haujlwm hauv av. Uas yog hais tias, qhib thiab kaw lub lag luam ntawm lub valve hauv cov yeeb nkab network tsis haum rau kev ua haujlwm hauv av.
Plaub, kev sim ua haujlwm ntawm lub foob mosrooj vag valve
4.1 Thaum lub valve yog tsim nyob rau hauv batch ntawm ib tug tej yam specifications, ib lub koom haum tso cai yuav tsum tau entrusted mus ntsuam xyuas cov nram qab no kev ua tau zoo:
(1) Qhov qhib thiab kaw lub zog ntawm lub valve nyob rau hauv cov xwm txheej ntawm kev ua haujlwm siab;
(2) Raws li kev ua haujlwm siab, nws tuaj yeem ua kom lub sijhawm qhib thiab kaw tas livalvekaw nruj nreem;
(3) Kev kuaj xyuas qhov dej tsis kam coefficient ntawm lub valve nyob rau hauv cov xwm txheej ntawm kev thauj mus los ntawm cov kav dej.
4.2 Nwsvalveyuav tsum tau kuaj raws li hauv qab no ua ntej tawm hauv lub hoobkas:
(1) Thaum lub valve qhib, lub valve lub cev yuav tsum tiv thaiv qhov ntsuas sab hauv ob zaug ntawm kev ua haujlwm siab ntawm lub valve;
(2) Thaum lub valve raug kaw, ob tog dais 1.1 npaug ntawm kev ua haujlwm siab ntawm lub valve, thiab tsis muaj qhov xau, tab sis tus nqi xau ntawm cov hlau nplaum npauj npaim valve tsis ntau dua li qhov yuav tsum tau ua.
Thib tsib, sab hauv thiab sab nraud los tiv thaiv corrosion ntawm lub qhov rooj muag muag muag
5.1 Sab hauv thiab sab nraud lub cev lub cev (xws li lub thawv sib kis ceev), ua ntej tshaj plaws, kev tua blasting, xuab zeb tshem tawm thiab xeb tshem tawm yuav tsum tau nqa tawm, thiab cov hmoov uas tsis muaj tshuaj lom epoxy resin yuav tsum tau txau electrostatically, nrog lub thickness ntawm ntau tshaj 0.3mm. Thaum nws yog ib qho nyuaj rau electrostatically spray non-toxic epoxy resin rau ntxiv-loj li qub, zoo xws li cov xim tsis muaj tshuaj lom epoxy yuav tsum tau txhuam thiab txau.
5.2 Nyob rau hauv lub valve lub cev thiab tag nrho cov seem ntawm lub valve phaj yuav tsum tau tag nrho cov anti-corrosion, ntawm ib sab, nws yuav tsis xeb thaum soaked nyob rau hauv dej, thiab yuav tsis muaj electrochemical corrosion ntawm ob hlau; Qhov thib ob, qhov saum npoo yog du, kom cov dej tsis kam tiv taus.
5.3 Cov kev cai tu cev ntawm epoxy resin los yog xim rau kev tiv thaiv corrosion hauv lub valve lub cev yuav tsum muaj daim ntawv ntsuam xyuas los ntawm cov cai sib thooj. Cov khoom siv tshuaj lom neeg thiab lub cev yuav tsum ua kom tau raws li qhov yuav tsum tau ua.
Post lub sij hawm: Nov-09-2024
