A stopcockvalavu ndi [1] valavu yowongoka yomwe imatsegula ndi kutseka mwamsanga, ndipo imagwiritsidwanso ntchito kwambiri pazofalitsa zomwe zimakhala ndi tinthu tating'onoting'ono tomwe timayimitsidwa chifukwa cha kupukuta kwa kayendetsedwe ka kayendetsedwe kake pakati pa malo osindikizira wononga ndi chitetezo chonse kuti chisagwirizane ndi sing'anga yothamanga ikatsegulidwa kwathunthu. Chinthu chinanso chofunika ndi chakuti ndizosavuta kugwirizanitsa ndi zomangamanga zambiri, kotero kuti valavu imodzi imatha kupeza njira ziwiri, zitatu, kapena zinayi zosiyana. Izi zimathandizira kamangidwe ka mapaipi, kuchepetsa kuchuluka kwa mavavu omwe amagwiritsidwa ntchito, komanso kumachepetsanso kulumikizana komwe kumafunikira pazida.
Momwe zimagwirira ntchito ma Valves ndistopcockmatupi okhala ndi zibowo monga mbali zotsegula ndi zotseka. Thupi la pulagi limazungulira ndi [2] tsinde kuti likwaniritse kutsegula ndi kutseka. Valve yaing'ono, yosapakidwa, yamapulagi imadziwikanso kuti "cocker". Thupi la pulagi la valavu ya pulagi nthawi zambiri limakhala cone (palinso thupi lozungulira), lomwe limafananizidwa ndi mawonekedwe ozungulira a valavu kuti apange awiri osindikiza. Valve ya pulagi ndi mtundu woyambirira wa valavu yomwe imagwiritsidwa ntchito, yokhala ndi mawonekedwe osavuta, kutsegulira ndi kutseka mwachangu, komanso kukana kwamadzimadzi otsika. Mavavu a pulagi wamba amadalira kukhudzana kwachindunji pakati pa thupi lomalizidwa la pulasitiki ndi thupi la valve kuti asindikize, kotero kuti kusindikiza kumakhala kosauka, mphamvu yotsegula ndi yotseka ndi yayikulu, yosavuta kuvala, ndipo kawirikawiri ingagwiritsidwe ntchito pazovuta zochepa (osati apamwamba kuposa 1 megapascal) ndi maulendo ang'onoang'ono (osakwana 100 mm) nthawi.
Clasify
Malinga ndi mawonekedwe apangidwe, amatha kugawidwa m'mitundu inayi: valavu yolimba yotsekera, valavu yodzisindikizira yokha, valavu yamapulagi ndi valavu yojambulira mafuta. Malinga ndi mawonekedwe a tchanelo, imatha kugawidwa m'mitundu itatu: valavu yowongoka, valavu yoyimitsa njira zitatu ndi valavu yamapulagi anayi. Palinso ma valve plug.
Mavavu a pulagi amagawidwa m'magulu monga: mavavu osindikizira osindikizira, ma valve osindikizira olimba opaka mafuta, mavavu a pulagi a poppet, ma valve a njira zitatu ndi njira zinayi.
Ubwino wake
1. Valve ya pulagi imagwiritsidwa ntchito pafupipafupi, ndipo kutsegula ndi kutseka kumakhala kofulumira komanso kosavuta.
2. Kukana kwamadzimadzi kwa valavu ya pulagi ndi kochepa.
3. Valve ya pulagi ili ndi dongosolo losavuta, laling'ono, lolemera komanso losavuta kukonza.
4. Kuchita bwino kusindikiza.
5. Palibe malire ndi njira yoyika, ndipo kayendetsedwe ka kayendedwe ka sing'anga kungakhale kopanda malire.
6. Palibe kugwedezeka, phokoso lochepa.
Mavavu a zipata zofewa
Valavu yofewa yosindikizira, valavu ya mafakitale, valavu yotsekera yotsekera ndi kutseka mbali ndi nkhosa zamphongo, njira yoyendetsera nkhosa yamphongo imayenderana ndi njira yamadzimadzi, valavu yachipata imatha kutsegulidwa ndi kutsekedwa kwathunthu, sungasinthidwe ndikugwedezeka. Nkhosa yamphongo imakhala ndi malo awiri osindikizira, valavu yomwe imagwiritsidwa ntchito kwambiri pazipata ziwiri zosindikizira zimapanga mphero, ngodya ya wedge imasiyana ndi magawo a valve, m'mimba mwake mwadzina ndi DN50 ~ DN1200, kutentha kwa ntchito: ≤200 ° C.
Mankhwala mfundo
Chipinda cham'mphepete mwa nyanjachipata cha valvee ikhoza kupangidwa kukhala yonse, yomwe imatchedwa chipata cholimba; Itha kupangidwanso kukhala nkhosa yamphongo yomwe imatha kutulutsa pang'ono pang'onopang'ono kuti ipititse patsogolo kupangika kwake ndikupanga kupatuka kwa ngodya yosindikizira pamalo pokonza, yomwe imatchedwa mphongo yotanuka.
Chisindikizo chofewama valve pachipataamagawidwa m'mitundu iwiri: ndodo yotsegukavalavu yotsekera pachipatandi ndodo yakuda chisindikizo chofewavalve pachipata. Nthawi zambiri pa ndodo yonyamulira pamakhala ulusi wa trapezoidal, womwe umasintha mayendedwe ozungulira kukhala mzere wozungulira pakati pa nati pakati pa nkhosa yamphongo ndi poyambira pa valavu, ndiye kuti, torque yoyendetsera ntchito. Pamene valavu imatsegulidwa, pamene msinkhu wokweza nkhosa wamphongo uli wofanana ndi 1: 1 nthawi ya valve m'mimba mwake, kutuluka kwamadzimadzi kumakhala kosasunthika, koma malowa sangathe kuyang'aniridwa panthawi ya ntchito. Pogwiritsidwa ntchito kwenikweni, imadziwika ndi vertex ya tsinde, ndiko kuti, malo omwe sangathe kutsegulidwa, monga malo ake otseguka. Pofuna kuwerengera zotsekera chifukwa cha kusintha kwa kutentha, nthawi zambiri imatsegulidwa kumalo apamwamba ndikubwezeretsanso 1 / 2-1 kutembenuka ngati malo a valve yotseguka. Choncho, malo otseguka a valve amatsimikiziridwa ndi malo a nkhosa (ie sitiroko). Vavu yamtunduwu nthawi zambiri iyenera kuyikidwa mopingasa mu payipi.
Zonse Zofunikira
1. Mafotokozedwe ndi magulu amavavu osindikizira a chipata chofewaayenera kukwaniritsa zofunikira za mapepala opangira mapaipi.
2. Chitsanzo cha valve yofewa yosindikizira chipata chiyenera kusonyeza zofunikira za chiwerengero cha dziko molingana ndi izo. Ngati ndi muyezo wabizinesi, kufotokozera koyenera kwachitsanzo kuyenera kuwonetsedwa.
3. Mphamvu yogwira ntchito yavalavu yotsekera pachipatakumafuna mphamvu yogwira ntchito ya ≥ payipi, popanda kukhudza mtengo, mphamvu yogwira ntchito yomwe valavu imatha kupirira iyenera kukhala yaikulu kuposa mphamvu yeniyeni yogwira ntchito ya payipi, ndipo mbali iliyonse ya valavu yofewa yosindikizira iyenera kupirira nthawi 1.1 mphamvu yogwira ntchito ya valve popanda kutayikira;
4. Muyezo wopanga wavalavu yotsekera pachipataikuyenera kuwonetsa nambala yamtundu wadziko kutengerapo, ndipo ngati ili mulingo wamabizinesi, chikalata chabizinesi chiyenera kuphatikizidwa ndi mgwirizano wogula.
Chachiwiri, zofewa chisindikizo chipata valavu zakuthupi
1. Zida za thupi la valve ziyenera kukhala zitsulo zotayidwa, zitsulo zosapanga dzimbiri, zitsulo zosapanga dzimbiri, 316L, ndi kalasi ndi deta yeniyeni ya thupi ndi mankhwala a chitsulo choponyedwa chiyenera kuwonetsedwa.
2. Zomwe zimayambira ziyenera kulimbana ndi tsinde lachitsulo chosapanga dzimbiri (2CR13), ndipo valavu yayikulu iyeneranso kukhala tsinde lachitsulo chosapanga dzimbiri.
3. Mtedzawu umapangidwa ndi mkuwa wa aluminiyamu kapena mkuwa wa aluminiyamu, ndipo kuuma ndi mphamvu zimakhala zazikulu kuposa za tsinde la valve.
4. Kulimba ndi mphamvu ya tsinde ya tsinde sikuyenera kukhala yaikulu kuposa ya tsinde la valve, ndipo sipayenera kukhala ndi electrochemical corrosion ndi tsinde la valve ndi thupi la valve pansi pa mikhalidwe ya kumizidwa m'madzi.
5. Zida za malo osindikizira
(1) Mitundu ya zisindikizo zofewavalve pachipatas ndizosiyana, ndipo njira zosindikizira ndi zofunikira zakuthupi ndizosiyana;
(2) Kwa ma valve wamba a chipata cha mphero, zida, njira yokonzera ndi njira yopera ya mphete yamkuwa iyenera kufotokozedwa;
(3) Physicochemical ndi ukhondo kuyezetsa deta zofewa chipata valavu ndi valavu mbale akalowa;
6. Vavu shaft kulongedza katundu
(1) Chifukwa chakuti chidindo chofewavalve pachipatamu maukonde chitoliro kawirikawiri ndi infrequent kutsegula ndi kutseka, kulongedza katundu ayenera kukhala osagwira ntchito kwa zaka zingapo, ndipo kulongedza si okalamba, ndi kusindikiza zotsatira anakhalabe kwa nthawi yaitali;
(2) Kuyika ma valve kumayenera kukhala kosatha ngati kumatsegulidwa pafupipafupi ndi kutseka;
(3) Poganizira zomwe zili pamwambazi, valavu yonyamula shaft imayesetsa kuti isasinthidwe kwa moyo wonse kapena zaka zoposa khumi;
(4) Ngati kulongedza kuyenera kusinthidwa, mapangidwe a valve ya pneumatic ayenera kuganizira za miyeso yomwe ingasinthidwe pansi pa vuto la kuthamanga kwa madzi.
Chachitatu, njira yogwiritsira ntchito chisindikizo chofewavalve pachipata
3.1 Njira yotsegulira ndi yotseka ya valve yotsekera pachipata panthawi yogwira ntchito iyenera kutsekedwa mozungulira.
3.2 Chifukwa valavu ya pneumatic muukonde wa chitoliro nthawi zambiri imatsegulidwa ndi kutsekedwa pamanja, chiwerengero cha kutsegulira ndi kutseka sikuyenera kukhala kochuluka, ndiko kuti, valavu yayikulu iyeneranso kukhala mkati mwa 200-600 revolutions.
3.3 Kuti athandizire kutsegulira ndi kutseka kwa munthu m'modzi, kutsegulira kwakukulu ndi kutseka kwa torque kuyenera kukhala 240N-m pansi pa kukakamizidwa kwa mapaipi.
3.4 Kumapeto kwa ntchito yotsegula ndi kutseka kwa valve yofewa yosindikizira valavu iyenera kukhala ndi tenon lalikulu, ndipo kukula kwake kuyenera kukhala kofanana, ndikuyang'ana pansi, kuti anthu azigwira ntchito molunjika kuchokera pansi. Mavavu okhala ndi ma disc si oyenera kugwiritsidwa ntchito pamaneti mobisa.
3.5 gulu lowonetsera la digiri yotsegulira ndi kutseka ya chisindikizo chofewavalve pachipata
(1) Chizindikiro chotsegulira ndi kutseka kwa valve yotsekera pachipata chofewa chiyenera kuponyedwa pachivundikiro cha gearbox kapena pachigoba cha disc yowonetsera pambuyo posintha njira, zonse zikuyang'ana pansi, ndipo chizindikiro cha sikelo chiyenera kutsukidwa ndi phosphors kusonyeza chidwi;
(2) Zida za singano ya disc disc zingapangidwe ndi chitsulo chosapanga dzimbiri pansi pa kayendetsedwe kabwino, apo ayi ndi mbale yachitsulo yojambulidwa, ndipo sayenera kupangidwa ndi khungu la aluminiyamu;
(3) Chizindikiro cha singano cha disc chikuwoneka bwino, chokhazikika, pamene kusintha kotsegula ndi kutseka kuli kolondola, kuyenera kutsekedwa ndi ma rivets.
3.6 Ngati valve yofewa yosindikizira pakhomo imakwiriridwa mozama, ndipo mtunda wapakati pa makina opangira opaleshoni ndi gulu lowonetsera ndi pansi ndi ≥1.5m, iyenera kukhala ndi malo opangira ndodo, ndipo iyenera kukhazikitsidwa mwamphamvu kuti anthu athe kuwona ndikugwira ntchito kuchokera pansi. Izi zikutanthauza kuti, kutsegula ndi kutseka kwa valve mu network ya chitoliro sikuli koyenera kugwira ntchito mobisa.
Chachinayi, kuyezetsa ntchito kwa chisindikizo chofewavalve pachipata
4.1 Vavu ikapangidwa m'magulu amtundu wina, bungwe lovomerezeka liyenera kupatsidwa ntchito yoyesa izi:
(1) Kutsegula ndi kutseka torque ya valavu pansi pa kukakamizidwa kugwira ntchito;
(2) Pansi pa kukakamizidwa kugwira ntchito, imatha kuonetsetsa kuti nthawi zonse zotsegula ndi zotseka zavalavukutseka mwamphamvu;
(3) Kuzindikira kokwanira kwa valavu yokana kuyenda pansi pamayendedwe amadzi amapaipi.
4.2 ndivalavuziyenera kuyesedwa motere musanachoke kufakitale:
(1) Pamene valavu yatsegulidwa, thupi la valve liyenera kupirira kuyesedwa kwapakati kwapakati kawiri pa mphamvu yogwira ntchito ya valve;
(2) Vavu ikatsekedwa, mbali zonse ziwiri zimakhala ndi nthawi 1.1 kuchuluka kwa mphamvu yogwira ntchito ya valavu, ndipo palibe kutayikira, koma kutayikira kwa valavu yagulugufe yosindikizidwa ndi chitsulo sikuli kwakukulu kuposa zofunikira.
Chachisanu, anti-corrosion mkati ndi kunja kwa valve yofewa yosindikizira chipata
5.1 Mkati ndi kunja kwa valavu thupi (kuphatikizapo variable liwiro kufala bokosi), choyamba, kuwombera kuphulika, kuchotsa mchenga ndi kuchotsa dzimbiri ayenera kuchitidwa, ndi ufa sanali poizoni epoxy utomoni ayenera electrostatic sprayed, ndi makulidwe oposa 0.3mm. Kukavuta kupopera utomoni wopanda poizoni wa epoxy pa mavavu akuluakulu, utoto wofananira wa epoxy wofananawo uyeneranso kupakidwa ndi kupopera.
5.2 Mkati mwa thupi la valve ndi mbali zonse za mbale ya valve zimafunika kuti zikhale zotsutsana ndi dzimbiri, kumbali imodzi, sizichita dzimbiri pamene zinyowa m'madzi, ndipo sipadzakhala corrosion electrochemical pakati pa zitsulo ziwiri; Chachiwiri, pamwamba pake ndi yosalala, kotero kuti kukana madzi kumachepetsedwa.
5.3 Zofunikira zaukhondo za epoxy resin kapena utoto wa anti-corrosion m'thupi la valve uyenera kukhala ndi lipoti loyesa kuchokera kwa oyang'anira. Zomwe zimapangidwira komanso zakuthupi ziyeneranso kukwaniritsa zofunikira.
Nthawi yotumiza: Nov-09-2024
