Kuwunika kwa ntchito zinayi za mavavu a mapaipi Kusankha ma valve a mapaipi operekera ndi ngalande

Kusanthula kwa ntchito zinayi za ma valve a mapaipi Kusankha ma valve a mapaipi operekera ndi kukhetsa valavu ya payipi Choyamba, kudula ndi kumasula sing'anga iyi ndi ntchito yofunikira ya valve, nthawi zambiri amasankha njira yoyendetsera valavu yowongoka, kukana koyenda kumakhala kochepa. Valavu yotsekera pansi (valavu yapadziko lonse lapansi, valavu ya plunger) chifukwa cha njira yake yoyenda movutikira, kukana koyenda ndikwapamwamba kuposa ma valve ena, osasankhidwa pang'ono. Ma valve otsekedwa angagwiritsidwe ntchito pamene kukana kwakukulu kumaloledwa. Chachiwiri, kulamulira Choyamba, kudula ndi kumasula sing'anga Iyi ndi ntchito yofunikira ya valve, nthawi zambiri amasankha valve yowongoka, kuthamanga kwake kumakhala kochepa. Valavu yotsekera pansi (valavu yapadziko lonse lapansi, valavu ya plunger) chifukwa cha njira yake yoyenda movutikira, kukana koyenda ndikwapamwamba kuposa ma valve ena, osasankhidwa pang'ono. Ma valve otsekedwa angagwiritsidwe ntchito pamene kukana kwakukulu kumaloledwa. Awiri, kuwongolera kuthamanga kwa valve A yomwe imakhala yosavuta kusintha nthawi zambiri imasankhidwa kuti ilamulire kuyenda. Ma valve otsekera pansi (monga ma valve a GLOBE) NDI WOYENERA KUCHIFUKWA CHIFUKWA CHIFUKWA MPAndo waukulu ndi wofanana ndi STROKE YA SHUTOFF. MAVAVU A Rotary (PLUG, butterfly, BALL valves) ndi FLEXURE BODY VALVES (PINCH, DIAPHRAGM) ALIPONSO KUTI THROTTLING CONTROL, koma KAWIRIKAWIRI PAMENE WOKHALA WA VAVU DIAMETERS. Chipata VALVE NDI chipata chopangidwa ndi chimbale chopita ku doko la mpando wozungulira kuti muyende modutsa, pokhapokha pafupi ndi malo otsekedwa, amatha kuyendetsa bwino kutuluka, kotero nthawi zambiri sagwiritsidwa ntchito poyendetsa kayendedwe. Chachitatu, shunt yosinthira Vavu imatha kukhala ndi ma tchanelo atatu kapena kuposerapo, kutengera kufunikira kobweza ndikupatutsa. Mavavu a pulagi ndi mpira ndi oyenera kwambiri pazifukwa izi, chifukwa chake, mavavu ambiri omwe amagwiritsidwa ntchito potembenuza ndi kupatutsa amasankhidwa ngati amodzi mwa ma valve awa. Komabe, MWINA, MITUNDU ENA YA MAVAVU ANGAGWIRITSIDWENSO MONGA NTCHITO ZONSE ZOPHUNZITSA, NGATI MAVAVU AWIRI KAPENA AMBIRI AMALUMIKIZANA bwino. 4. Sing'anga ndi inaimitsidwa particles Pamene sing'anga ndi inaimitsidwa particles, ** oyenera ntchito kutseka mbali pamodzi kusindikiza pamwamba kutsetsereka valavu ndi kupukuta kanthu. Ngati KUSIMIDWA KULI WOYIRIRA KUMUSYO NDI KUPITA KWA MPANDO, ZINTHU ZINTHU ZITHA KUKOLEDWA, CHOTI VALVU IYI NDI YOBWERA KWA MEDIA ZOYENEKEDWA KOPANDA CHIZINDIKIRO CHODINDIKIRA CHOLOLERA KUTI TITHU ZIZIGWIRITSA NTCHITO. Mavavu a mpira ndi mavavu a pulagi amapukuta kusindikiza pamwamba pakutsegula ndi kutseka, kotero ndi oyenera kugwiritsidwa ntchito pazofalitsa ndi particles zoimitsidwa. Kuwunika kwa kusankha kwa valavu yamadzi ndi ngalande, kusankha mavavu ndi kuyika magawo (a) mapaipi amadzi omwe amagwiritsidwa ntchito pa valavu, nthawi zambiri posankha 1. Ngati m'mimba mwake sali wamkulu kuposa 50mm, ndikofunikira gwiritsani ntchito valavu yapadziko lonse, pamene m'mimba mwake chitoliro ndi chachikulu kuposa 50mm, m'pofunika kugwiritsa ntchito valavu pachipata ndi valavu butterfly. 2 iyenera kusintha kayendedwe kake, kuthamanga kwa madzi mukamagwiritsa ntchito valavu yowongolera, valavu yodulidwa. Choyamba, kusankha valavu ndi kuika mbali (a) valavu ntchito pa payipi madzi, kawirikawiri motsatira mfundo zotsatirazi 1. Pamene chitoliro m'mimba mwake si wamkulu kuposa 50mm, m'pofunika kugwiritsa ntchito valavu padziko lonse, ndi pamene awiri chitoliro. ndi wamkulu kuposa 50mm, m'pofunika kugwiritsa ntchito valavu pachipata ndi valavu butterfly. 2 iyenera kusintha kayendedwe kake, kuthamanga kwa madzi mukamagwiritsa ntchito valavu yowongolera, valavu yodulidwa. 3. Kumene kukana kwa madzi kumakhala kochepa (monga paipi yoyamwa pampu yamadzi), valve yachipata iyenera kugwiritsidwa ntchito. 4. Vavu yachipata ndi valavu ya butterfly idzagwiritsidwa ntchito pa gawo la chitoliro kumene madzi akuyenda ayenera kukhala awiri, ndipo valavu yoyimitsa sayenera kugwiritsidwa ntchito. 5. Vavu ya butterfly ndi valavu ya mpira iyenera kugwiritsidwa ntchito m'magawo okhala ndi malo ochepa oyikapo. 6. Valavu yoyimitsa iyenera kugwiritsidwa ntchito mu gawo la chitoliro lomwe nthawi zambiri limatsegulidwa ndi kutsekedwa. 7. Valavu yogwira ntchito zambiri iyenera kugwiritsidwa ntchito pa chitoliro chotulutsira madzi ndi m'mimba mwake. (2) Magawo otsatirawa a mapaipi operekera madzi ayenera kuperekedwa ndi ma valve 1. Mapaipi amadzi a m'boma lokhalamo azikhala kuchokera kugawo lapaipi yolowera papaipi yapaipi yamadzi. 2. Nsonga za chingwe cha mapaipi a mphete kunja kwa malo okhalamo zidzakhazikitsidwa malinga ndi zofunikira zolekanitsa. Pamene gawo la chitoliro cha mphete ndi lalitali kwambiri, ndi koyenera kukhazikitsa valavu ya gawo. 3. Kumapeto kwa chitoliro chanthambi cholumikizidwa ndi chitoliro chachikulu chamadzi m'malo okhalamo kapena poyambira chitoliro chanyumba. 4. Chitoliro chapakhomo, mita ya madzi ndi zokwezera nthambi (pansi pa chokwera, chapamwamba ndi chakumunsi cha chokwera chokwera cha chitoliro). 5. Waukulu chitoliro cha mphete maukonde chitoliro ndi kugwirizana chitoliro kudzera nthambi chitoliro maukonde. 6. Chitoliro choperekera madzi m'nyumba chimalumikizidwa ndi poyambira chitoliro chogawa madzi cholumikizidwa ku chimbudzi chapanyumba ndi chapagulu, ndi zina zambiri, ndipo malo ogawa madzi papaipi yanthambi yogawa madzi ayenera kukhazikitsidwa pakakhala madzi atatu kapena kupitilira apo. magawo ogawa. 7. Chitoliro chotuluka cha mpope wamadzi ndi mpope wamadzi wothirira madzi. 8. Mapaipi olowetsa ndi kutulutsa madzi ndi kukhetsa mapaipi a tanki yamadzi. 9. Kulowetsa madzi ndikudzazanso mapaipi a zida (monga chotenthetsera ndi nsanja yozizirira). 10. Mapope opangira zida zaukhondo (monga zazikulu, zokodzerakodzo, beseni lochapira, shawa, ndi zina zotero). 11. Zida zina, monga valavu yowonongeka, valavu yochepetsera mphamvu, nyundo yamadzi yochotsa madzi, magetsi othamanga, pulagi ya sprinkler, valavu yochepetsera mphamvu ndi chipangizo choletsa kubweza kumbuyo kusanayambe ndi pambuyo. 12. Mavavu okhetsera ayenera kukhazikitsidwa kumunsi kwa netiweki yamadzi. (3) Chovala choyang'ana chiyenera kusankhidwa kawirikawiri malinga ndi malo ake oyika, kuthamanga kwa madzi patsogolo pa valve, zofunikira zosindikizira pambuyo pa kutseka ndi kukula kwa nyundo yamadzi chifukwa cha kutseka 1. Pamene kupanikizika pamaso pa valve kumakhala kochepa, kusambira, mpira ndi shuttle check mavavu ayenera kusankhidwa. 2. Pamene zofunikira zosindikizira zimakhala zovuta pambuyo pa kutseka, valve yoyang'ana ndi kasupe wotseka iyenera kusankhidwa. 3. Pamene nyundo yamadzi ikufunika kuti ifooke, ndi bwino kusankha valavu yoyang'ana yopanda phokoso yotsekedwa mofulumira kapena valavu yotsegula pang'onopang'ono yokhala ndi chipangizo chonyowa. 4. Kusweka kwa valve kapena spool ya valve check valve iyenera kutseka yokha pansi pa mphamvu yokoka kapena ya masika. Check ma valves ADZAKHALA PAZIGAWO ZOTSATIRA ZA PAPO LOPATSIRA MADZI Otsogolera mu chubu; Pa chitoliro cholowera cha chotenthetsera chamadzi chotsekedwa kapena zida zogwiritsira ntchito madzi; Chitoliro chopopera madzi; Mapaipi olowera ndi otuluka amaphatikizidwa ndi thanki yamadzi, nsanja yamadzi, ndi gawo la mapaipi otulutsira padziwe la chitoliro. Zindikirani: Sikoyenera kukhazikitsa ma valavu owunika a zigawo za mapaipi okhala ndi zoletsa kubwerera. (5) Magawo otsatirawa a mapaipi operekera madzi azikhala ndi zida zotulutsa mpweya 1. Pamaneti operekera madzi omwe amagwiritsidwa ntchito pafupipafupi, ma valve otulutsa okhawo ayenera kukhazikitsidwa kumapeto ndi pamwamba pa netiweki. 2. Pa gawo la netiweki yoperekera madzi ndi kusinthasintha kodziwikiratu ndi kudzikundikira mpweya, valavu yotulutsa yokha kapena kutulutsa kwa ma valve kumayikidwa pachimake cha gawoli. 3. Chida chamadzi cha pneumatic, pomwe tanki yamadzi yodziyimira yokha yamadzi ya pneumatic ikagwiritsidwa ntchito, malo okwera kwambiri a network yogawa madzi ayenera kukhala ndi valavu yotulutsa yokha. Awiri, ubwino ndi kuipa kwa mavavu osiyanasiyana 1, mavavu pachipata, valavu pachipata amatanthauza mbali kutseka (chipata) pamodzi ofukula malangizo a olamulira njira kusuntha valavu, mu payipi makamaka ntchito ngati sing'anga odulidwa. , ndiko kuti, kugwiritsa ntchito kotsegula kapena kutsekedwa kwathunthu. Kawirikawiri, ma valve a zipata sangathe kugwiritsidwa ntchito kuwongolera kuyenda. Ikhoza kugwiritsidwa ntchito pa kutentha kwapansi kutentha kungagwiritsidwenso ntchito pa kutentha kwakukulu ndi kuthamanga kwambiri, komanso malingana ndi zinthu zosiyanasiyana za valve. Koma valavu ya pachipata nthawi zambiri sagwiritsidwa ntchito potengera matope ndi zinthu zina papaipi. Ubwino: (1) kukana madzi pang'ono; ② torque yofunikira pakutsegula ndi kutseka ndi yaying'ono; ③ angagwiritsidwe ntchito otaya sing'anga ku mbali ziwiri za mphete maukonde kasamalidwe msewu, ndiko kuti, otaya sing'anga si oletsedwa; (4) Ikatsegulidwa kwathunthu, malo osindikizira amaphwanyidwa ndi njira yogwirira ntchito kuposa valve yoyimitsa; ⑤ Maonekedwe a thupi ndi osavuta, ndipo teknoloji yopangira ndi yabwino; ⑥ Kutalika kwake ndi kochepa. Zoipa: (1) kukula ndi kutalika kwa kutsegula ndi kwakukulu, malo omwe amafunikira kukhazikitsa nawonso ndi aakulu; ② Pakutsegula ndi kutseka, malo osindikizira amakhala akukangana, kutayika kwa mikangano kumakhala kwakukulu, komanso kosavuta kuyambitsa abrasion pa kutentha kwakukulu; ③ General pachipata valavu ali awiri kusindikiza pamwamba, kuti processing, akupera ndi kukonza zinawonjezera mavuto; (4) Nthawi yayitali yotsegula ndi yotseka. 2, butterfly Butterfly valve ndi mtundu wa chimbale chotsegula ndi kutseka mbali zomwe zimabwereza madigiri 90 kuti zitsegule, kutseka ndi kusintha njira yamadzimadzi ya valve. Ubwino: ① kamangidwe kosavuta, voliyumu yaying'ono, kulemera kwake, zogwiritsidwa ntchito, zosagwiritsidwa ntchito m'mimba mwake; ② kutsegula ndi kutseka mofulumira, kukana kuyenda kochepa; (3) angagwiritsidwe ntchito sing'anga ndi inaimitsidwa particles olimba, malinga ndi mphamvu ya kusindikiza pamwamba Angagwiritsidwenso ntchito ufa ndi granular TV. Itha kugwiritsidwa ntchito potsegula njira ziwiri, kutseka ndi kusintha kwa mpweya wabwino ndi payipi yochotsa fumbi, ndipo imagwiritsidwa ntchito mu mapaipi a gasi ndi njira zamadzi zazitsulo, mafakitale opepuka, mphamvu zamagetsi ndi petrochemical system, etc. Zoipa: ① osiyanasiyana malamulo otuluka si aakulu, akatsegulidwa mpaka 30%, otaya adzalowa kuposa 95%. ② Chifukwa cha kapangidwe kake ndi kusindikiza kwa valavu ya butterfly, sikoyenera kutentha kwambiri komanso makina opopera kwambiri. General ntchito kutentha m'munsimu 300 ℃, PN40 pansipa. ③ Ntchito yosindikiza ndiyosauka poyerekeza ndi valavu ya mpira ndi valavu yapadziko lonse lapansi, motero imagwiritsidwa ntchito m'malo omwe kufunikira kosindikiza sikuli kokwera kwambiri. 3, valavu ya mpira Imachokera ku valavu ya pulagi, gawo lake lotsegula ndi lotseka ndi mpira, kugwiritsa ntchito mpira kuzungulira 90 ° kuti akwaniritse cholinga chotsegula ndi kutseka. Mavavu a mpira amagwiritsidwa ntchito kwambiri kudula, kugawa ndikusintha komwe kumayendera sing'anga papaipi. Ma valve opangidwa ngati V-mawonekedwe a V amakhalanso ndi ntchito yabwino yoyendetsera kayendetsedwe kake. Ubwino: ① Lili ndi kukana otsika otaya (kwenikweni 0); ② Chifukwa sichingagwire ntchito (popanda mafuta), chitha kugwiritsidwa ntchito modalirika pazambiri zowononga komanso zamadzimadzi otentha; (3) Mu osiyanasiyana kuthamanga ndi kutentha, akhoza kukwaniritsa kusindikiza wathunthu; ④ Kutsegula ndi kutseka mwachangu kumatha kuchitika. Nthawi yotsegulira ndi yotseka yazinthu zina ndi 0.05-0.1s, kuti zitsimikizire kuti zitha kugwiritsidwa ntchito mu dongosolo lodzipangira la benchi yoyesera. Mukatsegula ndi kutseka valve mwamsanga, ntchitoyi ilibe mphamvu. ⑤ Zigawo zotsekera zozungulira zimatha kukhazikitsidwa pamalire; ⑥ sing'anga yogwirira ntchito imasindikizidwa modalirika mbali zonse; ⑦ potsegula ndi kutsekedwa kwathunthu, mpira ndi mpando wa valve wosindikizira pamwamba ndi kudzipatula kwapang'onopang'ono, kotero kuthamanga kwambiri kupyolera mu sing'anga ya valve sikungayambitse kukokoloka kwa malo osindikizira; ⑧ Kapangidwe kakang'ono, kulemera kopepuka, zitha kuganiziridwa kuti ndi njira yabwino kwambiri yopangira ma valve otsika kutentha kwapakati; ⑨ Symmetrical vavu thupi, makamaka welded valavu thupi kapangidwe, akhoza kupirira kupsyinjika chitoliro bwino; ⑩ Zigawo zotsekera zimatha kupirira kusiyana kwakukulu pakutseka. (11) mokwanira welded valavu thupi, akhoza mwachindunji m'manda pansi, kuti valavu dzimbiri mkati, ndi moyo wautali utumiki wa zaka 30, mafuta, payipi gasi ndi abwino valavu. Kuipa: ① chifukwa valavu yaikulu mpando kusindikiza mphete zakuthupi ndi PTFE, ndi inert pafupifupi mankhwala onse, ndipo ali ndi coefficient yaing'ono ya mikangano, ntchito khola, si zovuta kukalamba, osiyanasiyana kutentha ntchito ndi ntchito kusindikiza kwambiri makhalidwe mabuku. . Komabe, MANKHWALA A THUPI LA TEFLON, KUPHATIKIZA NDI CHIKHALIDWE CHAKUPULA KUKULU, KUKHALA KWA KUZIGIRIRA, NDI KUSAVUTA KWA NTCHITO YOPHUNZITSIRA, AMAFUNA KUTI KUPANGIDWA KWA MPANDO KUKHALE PA MZIMU WO. Choncho, pamene zinthu zosindikizira zimakhala zovuta, kudalirika kwa chisindikizo kumawonongeka. Komanso, Teflon ali otsika kutentha kukana kalasi ndipo angagwiritsidwe ntchito pansi pa chikhalidwe zosakwana 180 ℃. Pamwamba pa kutentha uku, zinthu zosindikizira zidzakalamba. Pogwiritsa ntchito nthawi yayitali, nthawi zambiri sagwiritsidwa ntchito pa 120 ℃. (2) machitidwe ake owongolera ndi oyipa kuposa valavu yapadziko lonse lapansi, makamaka valavu ya pneumatic (kapena valavu yamagetsi). 4, valavu yoyimitsa Vavu yomwe membala wotseka (dimba) amayenda pamzere wapakati wa mpando. Malingana ndi kayendetsedwe ka diski iyi, kusintha kwa mpando wa valve kupyolera mu valavu kumayenderana ndi kupweteka kwa disc. Chifukwa cha mtundu uwu wa valavu tsinde lotseguka kapena pafupi sitiroko ndi yochepa, ndipo ali odalirika odulidwa ntchito, ndipo chifukwa cha kusintha kwa mpando valavu mwa sitiroko ya chimbale ndi molingana ndi ubale, oyenera kwambiri otaya malamulo. . Choncho, valavu yamtunduwu ndi yoyenera kwambiri kudula kapena kusintha ndi kugwedeza. Ubwino: ① potsegula ndi kutseka, chifukwa mikangano pakati pa diski ndi valavu yosindikiza pamwamba ndi yaying'ono kuposa valavu yachipata, kotero kuti savala. Kutalika kotsegulira nthawi zambiri kumakhala * 1/4 ya njira yapampando, yaying'ono kwambiri kuposa valve yachipata; ③ Nthawi zambiri pamakhala chisindikizo chimodzi chokha pa thupi la valve ndi diski, kotero luso lopanga kupanga liri bwino ndipo ndilosavuta kusamalira. ④ Chifukwa chodzaza nthawi zambiri chimakhala chosakaniza cha asibesitosi ndi graphite, chimakhala ndi kukana kutentha kwambiri. Mavavu a nthunzi nthawi zambiri amagwiritsidwa ntchito ndi ma valve oyimitsa. Zoyipa: ① chifukwa cha kayendedwe ka sing'anga kudzera mu valavu yasintha, kotero kukana kwakung'ono kwa valve yapadziko lonse lapansi ndikokwera kuposa mitundu ina yambiri ya mavavu; ② Chifukwa cha kuyenda kwautali, liwiro lotsegula ndilochedwa kuposa valve ya mpira. 5. Pulagi valve Imatanthawuza gawo lotsekera mu valavu yozungulira yozungulira yozungulira, kupyolera mu madigiri 90 a kuzungulira kotero kuti pulagi ya valve pa doko la njira ndi thupi la valve pa doko la njira lidziwitsidwe kapena kupatukana, kutsegula kapena kutseka valve. Pulagi imatha kukhala cylindrical kapena mawonekedwe a conical. Mfundo yake imakhala yofanana ndi valavu ya mpira, valavu ya mpira imapangidwa pamaziko a valavu ya pulagi, yomwe imagwiritsidwa ntchito kwambiri pogwiritsira ntchito mafuta m'munda, komanso imagwiritsidwanso ntchito m'makampani a petrochemical.