Lemibhalo lihlanganisa ukufunda okuphelele mayelana nokwenza kwezinto kanye nokufunga kwamandla amaningi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi amanzi

Izici: isivikelo esihlukene semvume yokugcina; isicelo sokuphefumula; izici zokwenza; ukulungiswa okwesikhathi; ukushintshashintsha kwespring

High-parameter steam safety valves are widely used in industrial fields such as electric power, chemical industry, and petroleum, playing an important role in ensuring the safe operation of pipelines and equipment. Under high temperature and high pressure conditions, the opening and closing characteristics of the safety valve are directly related to the stability and safety of the system. Existing research mainly focuses on static characteristic analysis and design parameter optimization, while research on its dynamic opening and closing characteristics is insufficient. Based on the actual product needs of CHNLGVF丨中國大乾洋貿, this article studies the dynamic response behavior of high-parameter steam spring-type safety valves under complex working conditions, aiming to reveal the main factors that affect its dynamic characteristics and propose effective technical improvements. Strategy.

Isifiso esikhulu somkhuhlane we-spring valve ukuba sibambisane nesipressure sesithombe esisemkhakheni ngokulungiselela ukushuba kanye nokufaka isifiso somkhuhlane. Uma isipressure sesithombe sibanga isilinganiso esetshenziselwe, isikali sevalve sicindezela ukuze ishiye isipressure; futhi uma isipressure ishona ekuphileni kwezidingo esalungile, isifiso somkhuhlane sifaka isikali sevalve ukuze sikwazise isigqoko. Izimpendulo zokuvula nokufaka kulesi sihloko azikwazi ukubonakala ngokulungiselelwa kwe-spring stiffness kanye nokufaka isikali, kodwa kungase kube nokwenzekana kwezinto ezithile ezithintekile kwi-temperature kanye nesipressure sesithombe sesistimu kanye nokuhamba kwesithombe.

Izindlela zokuvula nokufaka kwesikrini se-safety valve ye-spring zingahluka ezinye zezikhathi:

Isimo esihambisana: Idiski yevali kanye nezinkampani zivali zihlala zihlanganisa kahle, futhi isistimu isipresha esiphansi kunokuthi isetshenziswa.

Ukudonsa kwesikhathi sesiklonyelwa: Ngesikhathi isicelo sesistimu siphakamisa, isitsha sivulekile ngokuphela futhi isiklonyelwa sivutha.

Kwesokudala: Idiski yevali liyavuliwe ngokuphelele futhi isitembu esisistimu siyahlukaniswa kungase kube sekuphileni kwezinyawo ezilula.

Isimo esiphakathi: Uma isitimu sezinga eliphansi kunezinkinga ezisetshenziswa, isikhonyana sisebenzisa isikhonyana sokuphinda kwevalvu.

Izimo zokwenza kwezinyathelo zivame ukuthi zivikelwa ngamafakthela angaphezu kwezinyathelo eziningi njengokunakwa kwezinyathelo, ukunakwa kwezinyathelo kwezindawo kanye nokunakwa kwezinyathelo kwezindawo. Ngakho, kudinga ukwenza izincwadi zokugcina nokuziphatha ukuze kwenzeke ukuchaza okuphelele kwezinyathelo zakhe.

Ukuze kwenzeke ukufunda kahle izimpendulo zezindawo zezinkampani zezinkampani zezinkampani ezinkulu zezinkampani, le nkulumo ithandazela isistimu sokuqala esikhulu nesikhulu nesikhulu nesikhulu. Isistimu isetshenziswa izinkampani zezinkampani, izinkampani zokunquma, izinkampani zezinkampani zezinkampani, izinkampani zezinkampani, izinkampani zezinkampani kanye nezinye izinto, futhi ingasebenzise izimo zokusebenza ezithile ezithile ngezinye izikhathi nezinye izikhathi. Isicelo esetshenziswa ekuboniseni kwakhe kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kwakudala kw

Ngenxa yezinyanga ezahlukene zokubamba kwesikhumba, izimpendulo zokuvula nokufaka kwesiphetho sesivikelo zivela kakhulu.

Kuqala kwezinyanga uma isisindo sokuqala kuyingxenye (10 N/mm): ukuvula nokufaka kwevalvu kuyasheshwa futhi isikhathi sokuvula nokufaka kuyavulwe, kodwa kunezinto ezinhle kakhulu zokulungiswa kwesicelo sokuphila.

Uma isisindo somkhiqizo wamathuba esilindele ekhulu (30 N/mm): ukubonisa nokuvula kuyisiphenduke, kodwa kuyisiphenduke kakhulu nokuvutha okukhulu, kuyadingeka ukuthi kwenzeke, kwenza kube nomthelela ekuphathweni kwesistimu.

Ukunqoba okuncane (20 N/mm): Ukuvula kanye nokufunga kwevalvu kuyatholakala okuncane, nesithwala esihle kanye nokwethembeka okwengeziwe kwezinkinga nokwethembeka kwesokudla.

Kuyafaneleka ukuthi ukhetho olungele ukubeka isisindo esiluhlaza kuyinto okwenza kube nomthelela emangalisayo kwezimo zedolobha lokugcina.

Ukuze kube lula ukubonisa izigaba zokuphendula ezinzima zezinkomba zesiphetho esikhulu esikhundleni sokupheka, le nkulumo ithumelela umodeli wokuhambisana okwenzayo wezinkomba zesiphetho zokupheka futhi zokufaka phakathi okusetshenziselwa kwi-CFD (izinhlobonhlobo zezingqubuzana zomoya). Ngokwenza isicelo sokubonisa isinqumo somshini wezinkomba, umodeli wokuhlanganyela izinto zomoya-nzuzo (FSI) kanye nezimo ezithile zomedium wezomoya, isimo sokupheka nokufaka phakathi kwesiphetho sesiphetho kwezinkomba kusimulwe ngokuphelele.

Umfani othuthukisa uhlelo wenza ukuthi kube yizindlela ezimbili ezithintekile zokudala. Isikhala sesikweletu sivumela ngokwe-Hooke, futhi isinqumo somoya siyise iNavier-Stokes equation ukuze kwenze ukusimula konke kusukela ekuvuleni okukhulu kwevalvu kuya ekufakelweni okuphelele. Izimboni zokulungiselela izimo zokusebenza zokusimula zingase zibe zezinkomba zokwenza izinto ezifanayo ukuze kwenzeke ukuthi umfani uthembekile.

Izinqubo zokwenza zikubonisa ukuthi ngaphansi kwezinkinobho ezahlukene zesikhumba, isivikelo sokuvula nokufaka kwesiklali sevalvu sicabanga ukuthi kunezinto ezithile ezivamile ngesikhathi. Ngemva kwezinkinobho ezifushane, isiklali sevalvu sivalelwa ngokucace kakhulu, kodwa ngezinkinobho eziningi, isiklali sevalvu sivula ngokushesha ngesikhathi esifushane, kodwa kuzoba nezinto ezithile ezithintekile. Ngenxa yokuqinisekisa isamba sokugcina, leli gciwane lingathinteka kancane futhi ukwanelisa ubudlelwano bokwakha kwesistimu.

Ngokwemibono evamile kanye nezimboni zokwenza izinto, le nkulumo iyathumela izindlela zokwenza okuhambisana kwezinto zemvelo zezinkampani zezinkampani ezinkulu zokuphepha zokuphepha:

Ngokwesimo semodeli yezimo zezinkinga kanye namakhulu amahlelo okuvula nokufunga kwevalvu, kuyachazwa ukuthi kufanele kube khethwe ukukhetha ububanzi obuphelele bokukhwehlela, futhi kuyadingeka ukuthi kwenziwe imiphumela emisha yezinkinga yezisindo yaspring ekwenzeni kube khona ukukhumbula ukususa okwesimweni kanye nokulungiswa.

Ukufaka ishawuli yokudambisa ngesikhathi sokuvula nokufaka kwesivulela sevalvu. Ngokufaka ishawuli ekhulwini lomvalvu noma ukuthatha idizayini yezindawo zokudambisa, ukushaywa kwevalvu kanye nokuphinda kwevalvu kungatholakala okuphelele, ngakho kuzoba nokwenzeka okuhambisana kwevalvu.

By using wear-resistant alloy materials and optimizing the shape of the valve disc, the contact characteristics between the valve disc and the valve seat are improved, the friction loss during the opening and closing process is reduced, and the opening and closing response speed is improved.

Based on the research results of this article, CHNLGVF丨中國大乾洋貿 introduced dynamic characteristic analysis and optimization strategies into the design of its high-parameter steam safety valve products, significantly improving the safety and stability of the product. The main improvements are as follows:

Ukubumba kwesikhumba sembotshana: Sebenzisa izikhumba zembotshana ezisebenzayo okuyinto yokwenza kube nomthelela ophambili.

Ukuphathwa kwezinhlobo zokuphefumula: Ukungena kwamathuluzi okuphefumula ezindaweni ezithandwa kuzoba nokwenzeka okuhambisana kwezinto ezithinta i-valve.

Ukwenza okusezingeni eliphezulu kanye nokwakha izindleko zokwenza: Sebenzisa izinto ezinamandla kakhulu kanye nezinto ezithintekile kwezokwenza futhi uxhumane nesakhiwo esisebenzayo ukuze uthembekile ekubonakaliseni kwesakhiwo phakathi kwamandla amanzi angaphansi kanye namandla amanzi angaphansi.

Leli phepha liqinisekisa ukusebenzisa isakhiwo nesimulasyoni esisodwa ukuze kwenze umhloli omkhulu wokufinyelela nokufaka kwezinyathelo zezikhali zezibopho zezibopho zezibopho ezikhali eziningi, futhi lihlangana nezindlela ezifanele zokwethula. Izimpendulo zokufunda zithola ukuthi ukukhali kwesipringi kanye nezinhlobo zezikhali zezibopho kuyinto izici ezinhle kakhulu ezivumela ukuthuthukiswa kwesikweletu esibopho. Ukufunda kwaleli phepha kuyinto isiqinisekiso esibalulekile CHNLGVF丨中國大乾洋貿 ekufundiseni nokwenza izinto ezinhle kakhulu kwezinto ezifinyelela nokwenza izinto ezinhle kakhulu kwezinto ezinhle kakhulu zezibopho zezibopho.

Future research will further focus on the dynamic characteristics of safety valves under various operating conditions and develop dynamic control strategies based on artificial intelligence to achieve more precise valve opening and closing control.