Kodi Zisindikizo za Metal Bellows Zingathandize Bwanji Kuchepetsa Utsi Wochokera M'mafakitale?

Chiyambi

Kulamulira mpweya woipa wotuluka kwakhala nkhani yofunika kwambiri pakupanga mafakitale omwe amagwiritsa ntchito ma VOC ndi madzi owopsa, makamaka pafupi ndi mapampu ndi ma compressor komwe kumatulutsa madzi ambiri. Zisindikizo zachitsulo zimathetsa vutoli mwa kusintha zinthu zomwe zimatha kulephera ndi chinthu cholumikizidwa, chosinthasintha chomwe chimagwira ntchito bwino kutentha, kupanikizika, komanso ntchito yamphamvu ya mankhwala. Nkhaniyi ikufotokoza momwe kapangidwe kameneka kamathandizira kuchepetsa kuchuluka kwa madzi otuluka, kuthandizira kutsatira miyezo yolimba ya mpweya wotuluka, komanso kukonza kudalirika kwa zida nthawi yomweyo. Imafotokozanso komwe zisindikizo zachitsulo zimakwanira bwino, chifukwa chake nthawi zambiri zimaposa zisindikizo zamakina wamba, komanso zomwe mainjiniya ayenera kuganizira akamaziyesa kuti achepetse mpweya wotuluka.

Momwe Zisindikizo za Metal Bellows Zimachepetsera Utsi Wochokera M'mafakitale

Malo opangira zinthu zamafakitale akuyang'aniridwa kwambiri pankhani ya kuwonongeka kwa chilengedwe, ndipo malamulo amalamula kuti azilamulira mwamphamvu mankhwala osungunuka achilengedwe (VOCs) ndi zowononga mpweya woopsa (HAPs). Zipangizo zozungulira, makamaka mapampu a centrifugal ndi ma compressor, m'mbuyomu zimakhala ndi 60% ya mpweya woipa womwe umachokera mkati mwazomera za mankhwala ndi petrochemicalKuthetsa mavuto obwera chifukwa cha kutayikira kwa madzi ndi njira yofunika kwambiri yoyendetsera ntchito komanso yogwirira ntchito bwino.

Ukadaulo wapamwamba wotsekera ndi njira yothandiza kwambiri yochepetsera mpweya woipa womwe umabwera chifukwa cha zida. Pakati pa ukadaulo uwu, zisindikizo zachitsulo zimapereka njira yopangidwa mwaluso kwambiri yopangidwira kuthetsa zofooka zomwe zimachitika chifukwa cha njira zachikhalidwe zotsekera. Mwa kusintha mawonekedwe otsekera, ukadaulo uwu umapereka chotchinga champhamvu ku mpweya woipa womwe umabwera chifukwa cha kutentha kwambiri, ngakhale m'malo ogwiritsira ntchito madzi osasunthika komanso otentha kwambiri.

Chifukwa chiyani kuwongolera mpweya woipa wothawa n'kofunika

Utsi wotuluka kuchokera ku mpweya wothawa umayimira vuto lalikulu pa chilengedwe ndi zachuma kwa ogwira ntchito m'mafakitale. Miyezo yolamulira, monga EPA's Method 21 ndi muyezo wa API 682 wa makina osindikizira, yachepetsa mwadongosolo kuchuluka kwa kutayikira kololedwa. Ngakhale kuti malire akale amalola kutayikira kwa madzi mpaka magawo 10,000 pa miliyoni ndi voliyumu (ppmv), malamulo amakono nthawi zambiri amaletsa kutulutsa kwa VOC kukhala pansi pa 500 ppmv, ndi malamulo am'deralo akukankhira malire a sub-100 ppmv.

Kulephera kusunga malire okhwima awa kumabweretsa zilango zazikulu zachuma, kukwera kwa pulogalamu yofunikira komanso yokwera mtengo yozindikira ndi kukonza (LDAR), komanso kutayika kwachuma kwa madzi opangidwa. Kuphatikiza apo, mpweya woipa wosakhazikika umabweretsa zoopsa zazikulu zachitetezo pantchito ndikuwononga zomangamanga zozungulira kudzera mu dzimbiri lofulumira. Chifukwa chake, kukweza mpaka ukadaulo wotseka mpweya wopanda mpweya kapena wotsika sikulinso njira yowonjezera kudalirika, koma ndi chinthu chofunikira kutsatira malamulo oyambira.

Momwe ma bellow seal amachepetsa njira zotulutsira madzi

Zisindikizo zamakina zachizolowezikudalira zinthu zotsekera zachiwiri zosinthika—nthawi zambiri zotchedwa elastomeric O-rings—zomwe ziyenera kutsetsereka pa shaft ya pampu kuti zigwirizane ndi kuwonongeka kwa nkhope ya seal ndi kukula kwa kutentha. Kusuntha kwamphamvu kumeneku kumapanga chiwopsezo chachikulu: pamene elastomer ikulimba kapena pamwamba pa shaft pakuwonongeka, njira zotayikira za microscopic zimapangidwa, zomwe zimalola ma VOC kuthawa mumlengalenga.

Zisindikizo zachitsulo zotsekereza zimachotsa njira yotulutsira madzi yachiwiriyi. Pakati pa chisindikizocho pamagwira ntchito ngati kasupe komanso chisindikizo chachiwiri, chotseka mozungulira pa shaft kapena sleeve pamene chikupindika kuti chigwirizane ndi kayendetsedwe ka nkhope. Chifukwa chakuti chisindikizocho chimatsekedwa bwino ndipo sichifuna elastomer yotsetsereka, njira yoyamba yotulutsira mpweya wotuluka imachotsedwa. Chisindikizo chachiwiri chokhazikika ichi chimatsimikizira kuti malo okhawo omwe angatulukire ali m'malo opukutidwa bwino a chisindikizo choyamba, omwe amatha kuyendetsedwa kudzera mu malo apamwamba a nkhope ndi machitidwe amadzimadzi otchingira.

Kodi Zisindikizo za Metal Bellows ndi Ziti Ndipo Zimagwira Ntchito Bwanji?

Zisindikizo zachitsulo zozungulira zimayimira gulu lapadera la zisindikizo zamakina zosagwiritsa ntchito mphamvu zomwe zimapangidwa m'malo omwe zigawo za elastomeric zimalephera kugwira ntchito. Zili ndi mphamvu yapadera yosunga umphumphu wa zisindikizo m'malo ogwirira ntchito kwambiri, nthawi zonse zimasamalira kutentha kwamadzi kuyambira -75°C mpaka kutentha kwambiri kopitilira 400°C popanda kuwonongeka komwe kumachitika chifukwa cha zisindikizo zachiwiri zochokera ku polima.

Mwa kuphatikiza ntchito yachiwiri yotsekera ndi makina olowetsa zinthu mu gawo limodzi lachitsulo chokha, zisindikizo izi zimapereka malo otsekera okhazikika komanso odziwikiratu. Kuphatikizana kwa zigawo sikuti kumangochepetsa zolakwika zomangira komanso kumachepetsa chiopsezo cha kusagwirizana kwa mankhwala komwe nthawi zambiri kumavutitsa zisindikizo za zinthu zambiri.

Momwe zisindikizo zomangira ndi zomangira zimamangidwira

Njira yopangiraimalamulira malire a magwiridwe antchito ndi mawonekedwe a makina a bellows. Njira ziwiri zazikulu zomangira ndi kulumikiza m'mphepete ndi hydroforming. Bellows zolumikizidwa m'mphepete zimapangidwa mwa kusindikiza ma diaphragm olondola kuchokera ku mapepala opyapyala a alloy—nthawi zambiri kuyambira 0.10 mm mpaka 0.25 mm mu makulidwe—ndi kuwalumikiza m'mimba mwake wamkati ndi wakunja kuti apange pakati popindika. Njira iyi imalola kutalika kwakukulu kwa kukwapula, kusinthasintha kwabwino, komanso kugawa bwino kwa kupsinjika pamitsempha ya weld.

Mosiyana ndi zimenezi, ma bellow opangidwa amapangidwa pokanikiza chubu chachitsulo chopyapyala m'makoma opyapyala kuti chikhale cholimba. Ngakhale kuti ma bellow opangidwa nthawi zambiri amakhala otchipa kupanga ndipo alibe ma weld seams, amakhala ndi masika ambiri komanso kuyenda kochepa poyerekeza ndi ma bellow opangidwa m'mphepete. Pa ntchito zamafakitale zomwe zimagwira ntchito bwino kwambiri komwe kumafunika kunyamula zinthu molondola komanso kusinthasintha kwakukulu kuti tipewe kutulutsa mpweya, ma bellow opangidwa m'mphepete amakhalabe muyezo wamakampani.

Kodi zimasiyana bwanji ndi zisindikizo zamakina zachikhalidwe

Kusiyana kwakukulu pakati pa zitsulo zotsekereza ndi zotsekereza zamakina zachizolowezi zotsekereza kuli momwe chotsekereza chachiwiri chimagwirizira mphamvu za shaft. Zotsekereza zotsekereza zimagwiritsa ntchito mphete yamphamvu ya O-ring yomwe imayenera kukankhira shaft. Kuchita izi mozembera kumabweretsa kusokonekera kwa shaft—kuwonongeka komwe kumachitika m'malo mwake komwe kumazungulira shaft, ndikupanga njira zotayikira zokhazikika komanso kufunikira kusintha shaft yokwera mtengo.

Zisindikizo zachitsulo zosagwiritsa ntchito mphamvu zimakhala zosasunthika poyerekeza ndi chivundikiro cha shaft, pogwiritsa ntchito kusintha kwa elastic kwa ma convolutions achitsulo kuti zigwirizane ndi nkhope. Izi zimachotsa kusokonekera kwa shaft konse ndikuchotsa chiopsezo cha "kupachikidwa" kwa chisindikizo, vuto lomwe zinyalala kapena madzi opangidwa ndi polymer zimapangitsa kuti mphete ya O-ring imamatire, zomwe zimapangitsa kuti nkhope ya chisindikizo choyamba ikule ndikuyambitsa kutayikira kwakukulu.

Zinthu Zofunika Kwambiri Pakupanga Chisindikizo

Kukonza bwino zisindikizo zachitsulo kumafuna kusanthula mosamala kwa malo enieni a ntchito. Chifukwa chakuti pakati pa bellows pamagwira ntchito ngati kapangidwe kake komanso ngati gawo losinthasintha, kapangidwe kake kayenera kulinganiza mosamala kusinthasintha kwa kutsata nkhope motsutsana ndi mphamvu yamakina yomwe imafunika kuti ipirire kupsinjika kwa dongosolo. Bellows wamba wokhala ndi ply imodzi nthawi zambiri amagwira ntchito modalirika mpaka mipiringidzo 20 mpaka 25, pomwe makonzedwe apadera a multi-ply amapangidwa kuti apirire kupsinjika kopitilira mipiringidzo 60.

Kugwirizana pakati pa zinthu zachitsulo, tribology ya zinthu zooneka, ndi mphamvu zogwirira ntchito kumatanthauza kudalirika kwakukulu ndi kuthekera kosunga mpweya woipa wa chosindikizira.

Momwe kuthamanga, kutentha, zoulutsira nkhani, ndi kayendedwe ka shaft zimakhudzira kusankha

Kachitidwe ka makina a pakati pa bellows kamadalira kwambiri kuthamanga kwa makina ndi kutentha kwa makinawo. Kupanikizika kwakukulu kungayambitse kusakhazikika kwa bellows kapena "kugwedezeka," zomwe zimapangitsa kuti zinthu zikhale zokhuthala kapena mapangidwe amitundu yambiri, zomwe zimawonjezera liwiro la masika ndikuchepetsa kusinthasintha kwa axial. Mainjiniya ayenera kuwerengera mawonekedwe abwino kwambiri a convolution kuti asunge mphamvu yotseka bwino pankhope za chisindikizo popanda kupitirira malire a kutopa kwa chitsulocho.

Makhalidwe a media ndi kuyenda kwa shaft nazonso zimakhala ndi gawo lofunika kwambiri. Madzi okhuthala kapena opangitsa kuti shaft igwe amatha kulowa mu bellow convolutions, zomwe zimalepheretsa kuyenda. M'mikhalidwe yotereyi, mapangidwe a bellow convolution otakata amafotokozedwa kuti azitha kudziyeretsa okha. Kuphatikiza apo, kuyenda kwambiri kwa axial shaft kapena radial runout kungapangitse bellows kukhala ndi mphamvu zozungulira, zomwe zimawonjezera kutopa kwachitsulo ngati stroke ikupitirira kulekerera kwa kapangidwe ka bellows.

Ndi zinthu ziti ndi kuphatikiza nkhope komwe kumathandizira kudalirika

Kusankha zitsulo kumatanthauza malire ogwirira ntchito ndi kukana dzimbiri kwa chisindikizo. Ma bellows okhazikika nthawi zambiri amapangidwa ndi chitsulo chosapanga dzimbiri cha AM350, zomwe zimapangitsa kuti pakhale mphamvu komanso kusinthasintha. Pa malo amphamvu a mankhwala kapena kutentha kwambiri, ma alloy okhala ndi nickel yambiri monga Alloy C-276 kapena Alloy 718 amatchulidwa kuti apewe kusweka kwa dzimbiri komanso kusunga mphamvu yokoka pa kutentha kwambiri.

Zipangizo zoyambira zosindikizira nkhope ndizofunikira kwambiri pochepetsa mpweya woipa. Kuphatikiza nkhope zolimba, monga Silicon Carbide (SiC) kuzungulira motsutsana ndi Tungsten Carbide (WC), kumapereka kukana kwakukulu pakuwonongeka. Komabe, pamadzimadzi omwe ali ndi mafuta ochepa, nkhope ya Silicon Carbide yomwe imagwira ntchito motsutsana ndi nkhope yosasinthika ya Carbon Graphite yolimba imapereka kusakanikirana kochepa, kuchepetsa kutentha komanso kupewa kutulutsa kwamadzimadzi komwe kungaphwanye chotchinga cha mpweya woipa.

Momwe mtengo wa moyo wonse umagwirira ntchito ndi momwe kutayikira kwa madzi kumayenderana

Ngakhale kuti zitsulo zolumikizidwa ndi m'mphepete zimakhala ndi ndalama zambiri zoyambira poyerekeza ndi zomangira zomangira zokhazikika za elastomeric, ntchito yawo yotuluka nthawi zonse imakhala yabwino kwambiri pakugwiritsa ntchito molimbika. Zomangira zomangira zomangira zogwiritsidwa ntchito kutentha kwambiri nthawi zambiri zimavutika ndi kuwonongeka kwa elastomer, zomwe zimapangitsa kuti mpweya woipa uchuluke pang'onopang'ono ndipo zimafuna kusinthidwa miyezi 12 mpaka 18 iliyonse.

Mosiyana ndi zimenezi, chisindikizo chachitsulo chodziwika bwino chomwe chimagwira ntchito mkati mwa mapangidwe ake chingawonjezere nthawi yapakati pakati pa kulephera (MTBF) kufika pa miyezi 36 mpaka 60. Nthawi yowonjezerekayi sikuti imangochepetsa mtengo woyambira komanso imatsimikizira kuti zipangizozo zimakhalabe mkati mwa malire okhwima otsatira malamulo okhudza chilengedwe, kupewa zilango za LDAR ndi ndalama zokhudzana ndi kuzima kwa kukonza kosakonzekera.

Momwe Mungatchulire, Kukhazikitsa, ndi Kusunga Zisindikizo za Bellows

Ubwino wa chiphunzitso cha zisindikizo zachitsulo umangopezeka pokhapokha potsatira kwambiri malangizo okhwima, kukhazikitsa, ndi njira zogulira. Ukadaulo wolondola umathetsedwa mosavuta chifukwa chogwiritsa ntchito molakwika kapena kugwiritsa ntchito zida molakwika. Miyezo yamakampani imati zida zozungulira ziyenera kukhala ndi kulekerera kokhwima kwa makina; mwachitsanzo, zofunikira za API 682 Gulu 2 ndi 3 zimati kupotoka kwa shaft pamaso pa chisindikizo sikuyenera kupitirira 0.05 mm pansi pa mphamvu yosinthika.

Kukhazikitsa njira yokhazikika yofotokozera ndikukhazikitsa zisindikizo izi kumawonetsetsa kuti mphamvu zochepetsera mpweya woipa wa ukadaulo wa bellows zikugwira ntchito mokwanira m'munda.

Momwe mungatchulire zisindikizo za ntchito

Ma protocol a specification ayenera kugwirizana ndi miyezo yodziwika bwino yamakampani, makamaka API 682, pomwe ma bellow achitsulo nthawi zambiri amagawidwa pansi pa mtundu wa B (ma bellow ozungulira) kapena mtundu wa C (ma bellow osasinthasintha). Mainjiniya ayenera kufotokoza momwe madzi amakhalira, kuchuluka kwa mphamvu ya nthunzi, ndi kutentha komwe chisindikizocho chidzakumana nako.

Chofunikanso ndi kufotokozera kwa dongosolo lothandizira kutsuka. Kugwiritsa ntchito mapulani a mapaipi a API—monga Dongosolo 11 lotsuka chipinda chosindikizira, kapena Dongosolo 52/53A la machitidwe amadzimadzi otchingira awiri—ndikofunikira kwambiri poyang'anira malo otentha ozungulira nkhope za chisindikizo. Mu ntchito zopanda kutulutsa mpweya zomwe zimaphatikizapo ma HAP oopsa kwambiri, kufotokoza chisindikizo cha bellows chopanikizika kawiri (Plan 53A) kumatsimikizira kuti kutuluka kulikonse komwe kungachitike pankhope zoyambira kumakhala ndi madzi otchingira osagwira ntchito m'malo mwa njira zowopsa.

Momwe kukhazikitsa ndi kukhazikitsa zimakhudzira magwiridwe antchito

Makonzedwe a chisindikizo cha katirijiZakhala zikukhazikitsa njira yokhazikitsira, kuchepetsa zoopsa zokhudzana ndi kusonkhana kwa zigawo. Zisindikizo za cartridge bellows zimasonkhanitsidwa kale ndikuyikidwa pasadakhale ku fakitale, kuonetsetsa kuti pakati pa bellows pakanikizidwa kutalika kwake koyenera—nthawi zambiri zimafuna kukanikiza kwa 3 mpaka 5 mm kuti apange mphamvu yoyenera yotsekera nkhope.

Pa nthawi yoyambitsa, ogwira ntchito ayenera kutsimikizira kugwirizana kwa zida, kuonetsetsa kuti magetsi akuyenda bwino komanso motsatizana. Kuchotsa zingwe zoyika makina musanagwiritse ntchito katiriji kungathe kusintha kupsinjika kwa kasupe, zomwe zimapangitsa kuti kutayikira kwa nkhope kutuluke kapena kutopa mwachangu kwa zitsulo zikayamba kugwira ntchito.

Momwe mungawunikire ogulitsa ndi njira zogulira

Kupeza zisindikizo zosinthika kwambiri kumafuna luso lapamwamba la wogulitsa. Oyesa ayenera kuyang'anitsitsa njira zowongolera khalidwe la wopanga, makamaka pankhani ya kukhulupirika kwa weld. Ogulitsa otsogola amagwiritsa ntchito njira zodziyimira pawokha za micro-plasma kapena laser welding ndikutsimikizira bellows core iliyonse pogwiritsa ntchito helium mass spectrometry, nthawi zambiri amayesa kuchuluka kwa kutayikira mpaka $1 \times 10^{-8}$ atm cc/sec.

Njira zogulira ziyeneranso kulamula kuti zinthu zizitsatiridwa bwino. Ogulitsa ayenera kupereka satifiketi ya EN 10204 3.1 ya zinthu zonse zopangidwa ndi zitsulo kuti atsimikizire kapangidwe ka alloy. Kuwunika luso la wogulitsa kuchita zoyeserera zamphamvu ndikupereka chithandizo chaukadaulo wapakhomo ndikofunikira kwambiri kuti zinthu zizigwiritsidwa ntchito nthawi yayitali komanso kuti zinthu zizitsatira malamulo okhudza kutulutsidwa kwa mpweya.

Pamene Bellows Seals Ikubweretsa Kubweza Kwabwino Kwambiri

Kuyika zisindikizo zachitsulo m'malo onse sikuli kopindulitsa kwenikweni chifukwa cha mtengo wapamwamba wa ukadaulo. Kuyika njira zanzeru kumafuna kuwunikira momwe chisindikizocho chikugwirira ntchito poyerekeza ndi kudalirika komanso zovuta zomwe fakitaleyo ikukumana nazo. Kulungamitsidwa kwachuma kumadalira pakuwona kwathunthu kayendetsedwe ka chuma, komwe mtengo wa nthawi yopuma nthawi zambiri umapitirira $10,000 pa ola limodzi m'malo opitilira ntchito monga mafakitale oyeretsera mafuta ndizomera zopangira mankhwala.

Mwa kuyang'ana kwambiri pa zinthu zofunika kwambiri, zoopsa kwambiri, komanso kudalirika

Mfundo Zofunika Kwambiri

• Zomaliza zofunika kwambiri ndi zifukwa zomveka za Zisindikizo za Metal Bellows
• Mafotokozedwe, kutsata malamulo, ndi macheke owopsa oyenera kutsimikiziridwa musanachite izi
• Njira zotsatila zogwira mtima komanso machenjezo omwe owerenga angagwiritse ntchito nthawi yomweyo

Mafunso Ofunsidwa Kawirikawiri

Kodi zisindikizo zachitsulo zimachepetsa bwanji mpweya woipa wochokera m'mafakitale?

Amachotsa njira yodumphira ya O-ring yomwe imapezeka mu ma pusher seal. Ma bellow amagwira ntchito ngati spring ndi secondary seal, zomwe zimathandiza mapampu kukhala ndi ma VOC ndi madzi oopsa bwino.

Kodi ndi liti pamene ndiyenera kusankha chisindikizo chachitsulo m'malo mwa chisindikizo cha elastomer bellow?

Sankhani zitsulo zoteteza kutentha kwambiri, kutentha kwambiri, mankhwala amphamvu, kapena madzi omwe angalimbitse ma elastomer. Ndi othandiza pa ntchito zolimba zopopera mpweya wochepa.

Ndi mafakitale ati omwe amapindula kwambiri ndi zisindikizo zachitsulo?

Mankhwala, petrochemical, mafuta ndi gasi, magetsi, migodi, mafakitale a m'madzi, ndi m'madzi amapindula kwambiri, makamaka pamene mapampu amagwira ntchito zokhudzana ndi kutentha, kusinthasintha, kapena zoopsa komanso nkhani zokhudzana ndi kutsata malamulo okhudza utsi woipa.

Kodi Victor Seals ingapereke zisindikizo zachitsulo kuti zisinthidwe ndi pampu ya OEM?

Inde. Victor Seals imapereka zitsulo zoteteza ndi zina zotetezera makina kuti zisinthidwe ndi kukonzedwa mogwirizana ndi OEM, kuphatikizapo chithandizo cha mitundu monga Grundfos, IMO, Flygt, Alfa Laval, ndi Allweiler.

Ndi njira ziti zosamalira zomwe zimathandiza kuti zisindikizo zachitsulo zikhalebe ndi mpweya wochepa?

Yang'anani momwe chisindikizo chilili, momwe shaft imayendera, mapulani oyeretsera, ndi kutentha kwa ntchito. Gwiritsani ntchito miyeso yoyenera yoyikiramo ndikubwezeretsani manja osweka kapena mphete zolumikizirana mwachangu kuti mupewe kutuluka kwa madzi.