Mavharuvhu eButterfly Anoshanda Nesimba Repamusoro: Kuchengetedza Moto Uye Kusabuda Mvura Mumitsetse Yemaitiro Akakomba

Nhanganyaya

Mukugadzirisa makemikari emazuva ano, kunatswa kwemafuta negasi, uye mapombi emumaindasitiri makuru, kudiwa kwemavharuvhu akamanikana, akareruka ekuparadzanisa kwakatungamira kuchinja kukuru mune zvinodiwa. Mavharuvhu egedhi nemavharuvhu ebhora ave ari sarudzo yekutanga yekuvharwa kwakasimba, asi huremu hwawo, saizi yemahamvuropu, uye mitengo yekushanda padhayamita yakakura zvinopa zvipingamupinyi zvehupfumi. Mhinduro yeindasitiri yave irivharuvhu yeshavishavi inoshanda zvakanyanya.

Pakati peizvi,vharuvhu yeshavishavi ine eccentric mbiri—inonziwo vharuvhu remapuruguru maviri-offset—yave ndiyo nzira yeinjiniya yekushandisa zvinosanganisira kumanikidzwa kwakanyanya, tembiricha dzakanyanya, uye mafambiro emhepo anochinja-chinja. Kana ikashandiswa munzvimbo dzine njodzi dzehydrocarbon, kubatanidza tekinoroji yekuvhara inodzivirirwa nemoto haisi sarudzo; ibasa rekutevedzera mitemo rakagadzirirwa kuchengetedza vashandi nekudzivirira njodzi dzinokonzeresa kuchenesa.

1. Magadzirirwo eMagetsi eDouble Offset

Mavharuvhu eshavishavi akajairika—apo mubato unopfuura zvakananga nepakati pedhisiki nechigaro—ane dambudziko rekubatana kunoramba kuripo, uye kukweshana kwakanyanya panguva yese yekutenderera kwe90°. Izvi zvinotungamira mukusakara kwechigaro nekukurumidza, kubvaruka kwenzvimbo, uye torque yekushanda yakakwira.

Vharuvhu yemashavishavi maviri akajeka anobata dambudziko iri rekukweshana kuburikidza nematanho maviri akasiyana ejometri:

Kurasikirwa Kwekutanga: Mubato uri kuseri kwenzvimbo inovhara chigaro chevharuvhu. Izvi zvinobvumira dhisiki kuti rivhare nguva dzose muganho wese we360°.

Kurasikirwa Kwechipiri: Mugodhi wacho wakamiswa kubva pakati pebhore repombi.

Mhedzisiro yeCamming

Kana zvabatanidzwa, ma offsets maviri aya anogadzira izvo mainjiniya vanonzi chiito chakafanana necam. Kana vharuvhu yatanga kuvhurika, dhisiki inosimuka kubva pachigaro mukati me1° kusvika 3° yekutanga yekutenderera. Kune inenge 95% yekufamba kwevharuvhu, hapana kusangana pakati pedhisiki nechigaro. Kukweshana kunoderedzwa, torque yekushanda inodzikira, uye hupenyu hwebasa hwezvigaro zve elastomer kana polymer zvakapfava—zvakaita sePTFE neRTFE—hunowedzera zvakanyanya.

Ruzivo rwemumunda runoratidza kuti mavharuvhu maviri emhando ye "eccentric butterfly" akachengetedzwa zvakanaka anowanzo shanda kwemakore gumi nemashanu kusvika makumi maviri mukushandiswa kwe "eccentric" iri pakati nepakati, nemamwe magadzirirwo anopfuura miriyoni imwe chete. Kuderedzwa kwekukweshana kunorevawo kudzikira kwehuwandu hwekuchengetedza - hupenyu hwechigaro chevharuvhu hunowanzo kuve hwakareba katatu kusvika kashanu kupfuura hwemagadzirirwo emhando imwe chete.

2. Dhizaini Yezvigaro Zvisingatsvi pamoto

Munzvimbo dzinocheneswa peturu nemakemikari, zvikamu zvepombi zvinofanirwa kuchengetedza kusimba kwekuvhara kunyangwe zvanyura mumoto wemuchina wakagadzirwa zvizere. Kuti uwane chinzvimbo chechokwadi chekuchengetedza moto kunoda gadziriro yezvigaro zviviri yakasarudzika.

Chigaro chinodzivirira moto chinosanganisira zvinhu zviviri zvekuvhara zvinoshanda zvakatevedzana:

Kushanda Kwakajairika (Chisimbiso Chinyoro Chinotonga):

Pasi pemamiriro ekushanda akajairwa, chigaro chePTFE, RTFE, kana Devlon chinogara kwenguva refu chinoshanda sechinhu chikuru chekuvhara, chinoshanda zvizere nemucheto wedhisiki kuti chidzime zvakasimba zvichienderana nezvinodiwa neAPI 598 kana ISO 5208 Rate A. Muchimiro ichi, vharuvhu inoita basa re zero-leakage.

Kupisa Moto (Simbi Inobata Chisimbiso):

Kana tembiricha yemhepo ikapfuura 540°C (1,000°F) panguva yemoto wemoto, chigaro chekutanga chinopfava chinonyorova, chinoora, uye chinozopedzisira chatsva. Panguva iyi, chigaro chechipiri chesimbi chakazadzwa kare—chinowanzogadzirwa kubva kuInconel 718 kana 625—chinobuda pasi pekumanikidzwa kwemutsara uye chinovhara pamucheto wedhisiki, zvichiita kuti pave nemudziyo wesimbi nesimbi. Mamwe magadzirirwo anoshandisa chigaro chekutanga cheRPTFE chine Inconel 625 backup, yakatarwa kuAPI 607 ​​6th Edition.

Chidziviriro ichi chechipiri kubva pasimbi kuenda kusimbi chinoita kuti pave nekutevedza mitemo yakasimba yekuedza moto inosanganisira API 607 ​​neISO 10497 (yaimbova BS 6755 Chikamu 2). API 607 ​​inoda kuti vharuvhu ivhurwe nemota (ivhurwe uye ivharwe) panguva yekuedza moto kuti ione kuti mashandiro acho anoramba achishanda kana akaputirwa nemoto. Kuedza uku kunoisa vharuvhu pa750–1,000°C kwemaminitsi makumi matatu, nemiganhu yekubuda kwemvura yakatarwa pamatanho ekudziya moto uye ekutonhodza mushure memoto.

Zvakakosha kuziva kuti chitupa chekudzivirira moto chinoshanda pakugadzira mavharuvhu, kwete kumavharuvhu ega ega. Kana dhizaini yapasa bvunzo yeAPI 607, mavharuvhu ese emhuri iyoyo anopihwa chitupa pasina bvunzo yemoto yega yega.

3. Mavharuvhu eButterfly Anoshanda Zvakanyanya Kushanda Zvichienzaniswa neStandard Concentric

Vatariri vekutenga vanoongorora marongerwo emagetsi emagetsi dzimwe nguva vanoedzwa kusarudza mavharuvhu emabhatafura ane bhajeti shoma. Zvisinei, mapaipi ane simba guru uye anoshanda zvakanyanya anoda kusimba kwevharuvhu remabhatafura rinoita basa repamusoro.

API 641, yakaburitswa kekutanga muna 2016, inotonga kuyedzwa kwemhepo inobuda mumhepo inoputika kwemavharuvhu ekutenderera kwekota anosanganisira mabhururu, bhora, uye mapulagi. Inotsanangura macircuits emakanika mazana matanhatu negumi nematanhatu uye macircuits matatu ekupisa, ane zviyero zvesimba uye zvisingachinji.

4. Kukura kweActuator uye Zvinokonzera Mutengo

Nekuti double-offset geometry inobvisa kukweshana kwekudhonza kuripo mumagadzirirwo e concentric, inochinja zvakanyanya torque yevharuvhu.

Muvharuvhu yemapuruvheta ine mativi maviri, simba guru rinongoitika chete panguva yekupedzisira ye5° yekuvharwa—izvo mainjiniya vanodanatorque yezvigaro.Kumhanya kwesimba—simba rinodiwa kuti dhisiki ifambiswe nepakati pechinhu chasara chekutenderera—rakaderera zvikuru.

Kune otomatiki zvishwe, iyi torque profile inopa zvakanakira zvehupfumi zvakakosha:

• Zvishandiso Zvidiki: Unogona kuderedza ma actuator epneumatic kana ma electric multi-turn motors ne20% kusvika 35% zvichienzaniswa ne ball valve kana concentric valve isina kunyatsotsanangurwa zvakanaka. Mamwe masosi anotaura kuti torque inoda 30% kusvika 50% yakaderera pane midline butterfly valves.

•Kuderedzwa Kwetsoka: Ma actuator madiki anoshandura zvakananga kuita huremu hwakareruka hwekutsvedza uye mitengo yakaderera yekutsigira zvivakwa zvemapaipi.

•Kushandiswa Kwesimba Kushoma: Ma actuator epneumatic spring-return anoda simba shoma rekutonga mweya, zvichideredza mutoro wemagetsi pazviteshi zve compressor.

Gwaro rinoshanda rekusarudza actuator: kana vharuvhu iine 80 Nm ye torque inodiwa, actuator inofanira kunge yakakura pa 100 Nm kana kupfuura, ichishandisa safety factor. Hunhu hwe torque yakaderera yemagadzirirwo maviri e eccentric zvinoreva kuti safety factor iyi inogona kushandiswa kune baseline diki pane inodiwa kune concentric valve.

5. Kusarudza Zvinhu uye Kufunga Nezvekushandisa

Kugona kushanda kwevharuvhu yemashavishavi maviri akasiyana-siyana kunosvika pamhando dzakasiyana dzebasa, chero bedzi zvinhu zvakasarudzwa nemazvo.

Zvishandiso zveMuviri:

Sarudzo dzinowanikwa dzinosanganisira ductile iron, cast steel (WCB), uye stainless steel (CF8M). Kune masevhisi emakemikari akasimba nemvura yegungwa, super duplex uye nickel-based alloys zviripo.

Sarudzo dzezvigaro:

Zvigaro zvakapfava (PTFE, RTFE, Devlon) zvinovhara zvakasimba kuti zvishandiswe muhurongwa hwemazuva ese. Zvigaro zvesimbi (Inconel, Stellite) zvinogona kuwedzera tembiricha kusvika 600°C uye hazvikuvadzi moto.

Zvinhu zveDisiki:

Sarudzo dzinosiyana kubva pasimbi yakaputirwa ne epoxy kusvika kuSS304, SS316, uye simbi ine duplex.

Pabasa rekubvisa tsvina inotsvedza—senge kuchera matope, kuputika kwemvura, kana bauxite—magadzirirwo maviri eccentric anopa mukana pamusoro pemavharuvhu akasimba nekuti cam action yedhisiki inobvisa media kubva pa sealing interface, zvichideredza kubatwa kwezvikamu uye kukuvara kwechigaro. Pakushandisa cryogenic LNG, zvinhu zvakagadziriswa zvakanaka uye maitiro ekutonhodza zvakadzika zvinoita kuti kushanda kwakavimbika kusvike −196°C.

Kushanda pamwe chete neNSW: Kuvimba neUinjiniya

Ungave uri kugadzira nzvimbo yekutsvaira petrochemical, nzvimbo yekucherera kuchera kunze kwenyika, kana nzvimbo yakakosha yekugadzirisa makemikari, kusarudza vharuvhu chaiyo kunosarudza nguva yekushanda kwechirimwa uye mashandiro azvo ekuchengetedza.

KuNSW VALVE COMPANY (nswvalve.com), tinogadzira mavharuvhu emhando yeAPI 607 ​​akasimbiswa, asingatsvi, uye akagadzirwa kuti ashande mumamiriro ezvinhu akaomarara emiti. Zvivako zvedu zvekugadzira zvinoenderana neISO zvinoshandisa Positive Material Identification (PMI) yakasimba, kuongorora kusingaparadze (NDE), uye kugadzira CNC nemazvo kuti mavharuvhu ape mavharuvhu asina kuburitsa mvura yakawanda, torque yekushanda yakaderera, uye kutevedza kwakazara kwesimbi.

Tinopa zvigaro zvakasiyana-siyana—zvine zvigaro zvakapfava kuti zvidzimwe zvakasimba, zvisingatsvi pamoto kuti zvishandiswe pakupisa kwakanyanya, uye zvigaro zvesimbi kuti zvishandiswe pakupisa kwakanyanya—zvose zviripo nekushandisa manual, giya, pneumatic, kana electric actuation.

Bata timu yedu yeinjiniya panswvalve.comnhasi kuti mutumire mapepa enyu edata, kukurukura nezvemagadzirirwo emhando ye alloy (akadai seSuper Duplex kana Monel), kana kukumbira mishumo yedu yepamutemo yekuyedza yeAPI 607.

Mareferensi eUnyanzvi

•API 607: Kuedza Moto kweMavharuvhu nemavharuvhu eQuarter-Turn Ane Zvigaro Zvisiri zveMetallic

•API 609: Mavharuvhu eBhatafurayi: Ane Mavhiri maviri, Rudzi rweLug- uye Rudzi rweWafer

•API 641: Kuedzwa kweFugitive Emissions yeMavharuvhu eQuarter-Turn

•ISO 10497: Zvinodiwa pakuongorora mhando dzemoto pamavharuvhu

•ISO 15848-1Mavharuvhu Emaindasitiri—Kuyera, Kuedza uye Maitiro Ekuwana Hutsi Hwakabuda Mumhepo Dzinobuda ...

•ASME B16.34: Mavharuvhu—Ane Flanged, Threaded, uye Welding End