Amabhola E-Valve: Umongo Oqondile Wokusebenza Kwe-Valve Yebhola

Ayini Amabhola E-Valve?

Ingxenye eyinhloko ye-ivalvu yebholayibhola le-valve (noma i-ball valve sphere). Umklamo wayo unquma ngqo ukusebenza kokuvala kwe-valve, amandla okulawula ukugeleza, kanye nokuphila kwenkonzo.

Ukuma Nokunemba:

Amabhola ajwayelekile aqukethe imiklamo ye-full-bore noma ye-reduced-bore. Ibhola le-full-bore linobubanzi be-bore obufana nobubanzi bangaphakathi bephayiphi (isb., ibhola le-2 Inch line-2 Inch bore), okuqinisekisa ukumelana nokugeleza okucishe kube yi-zero. Ukunemba komshini kumele kufinyelele izinga le-IT6-IT7 (ngokwe-ISO 286), kanye nobulukhuni bomphezulu obungu-≤0.8μm (Ra) ukuze kuncishiswe ukuguguleka nokuqinisekisa ukusebenza okubushelelezi.

Indima Yamabhola E-Valve

Amabhola e-valve ayisici esiyinhloko sokuvala nokulawula ukugeleza ngaphakathi kwe-valve yebhola. Ukujikeleza ibhola ngama-degree angu-90 kuvula noma kuvala indlela yokugeleza. Ubuso bawo obunembile kanye nobuqotho bezinto ezibonakalayo kubaluleke kakhulu ekuvalekeni okuqinile kokuvuza kanye nokulawula ukugeleza.

Izinto Zokudlala Ama-Valve

Insimbi Engagqwali (304/316):

Inikeza ukumelana okuhle kakhulu nokugqwala, isetshenziswa kabanzi ezimbonini zamakhemikhali, ze-petrochemical, kanye nezokucubungula ukudla.

Insimbi Yekhabhoni Ene-Nickel Plating:

Isixazululo esingabizi kakhulu esinikeza ukuvikelwa kokugqwala okumaphakathi, esivame ukusetshenziswa ezinhlelweni zamanzi ezinomfutho ophansi.

I-Ceramic (isib., i-Alumina, i-Zirconia):

Inikeza ukumelana okungavamile nokuguguleka, ukugqwala, kanye namazinga okushisa aphezulu (kufika ku-1200°C), kodwa ibonisa ukuphuka okuphezulu (kubhekiswa ku-“Valve Engineering Handbooks”). Ilungele izinsizakalo ezimanzi kakhulu kanye nezinga lokushisa eliphezulu.

Izinhlobo zama-Valve Balls

Ibhola le-O-Port:

Ibhola eliyindilinga elijwayelekile elinembobo eyindilinga, elisetshenziswa kuma-valve amaningi ebhola antantayo kanye nalawo aqinile.

Ibhola le-V-Port:

Inesikhindi esinomumo ongu-V ebhoreni, okuvumela ukulawula ukugeleza okunembile (okuphawulwa yisici sokugeleza esilinganayo), esisetshenziswa ngqo kuma-valve ebhola le-V-port.

Ibhola le-C-Port:

Ibhomu elinomumo "C", elisetshenziswa kakhulu ezinhlelweni ezithile zamachweba amaningi.

Ibhola le-U-Port:

Imbobo emise okwe-“U”, esetshenziswa kumavalvu anamachweba amaningi ukuze kuhlangatshezwane nezidingo ezithile zokuphambuka kokugeleza.

Ibhola Elintantayo:

Ibhola alinamathele ngomshini esiqwini futhi lithembele ekucindezelweni okuphansi ukuze liphoqwe esihlalweni ukuze livalwe. Livame ngobukhulu obuncane.

Ibhola Elifakwe I-Trunnion (Elingaguquki):

Ibhola lisekelwa ama-trunnion bearings phezulu nangaphansi, okunciphisa i-torque yokusebenza kanye nomthwalo wesihlalo, okubaluleke kakhulu ekusetshenzisweni komfutho ophezulu kanye nobubanzi obukhulu.

Amabhola Anezindlela Ezintathu:

Ibhola le-T-Port:

Iqondisa ukugeleza phakathi kwanoma yimaphi amachweba amabili noma ingavala konke ukugeleza.

Ibhola le-L-Port:

Ixhumanisa imbobo ephakathi kunoma iyiphi yalezi zimbobo ezimbili eziseceleni kodwa hhayi zonke ezintathu ngesikhathi esisodwa.

Inothi Elibalulekile: Amabhola Aqinile vs. Angenalutho

Abanye abakhiqizi, ikakhulukazi eShayina, bakhiqiza amabhola e-valve angenalutho ikakhulukazi njengendlela yokonga izindleko.

Amabhola angenalutho anesilinganiso sokucindezela esiphansi kakhulu ngenxa yomgodi wawo wangaphakathi futhi awahambisani nezidingo zomklamo we-API 6D (Ama-Pipeline Valve).

Abasebenzi bokuthenga nokuhlola kumele baqinisekise ngokusobala nomkhiqizi ukuthi amabhola e-valve anikeziwe aqinile noma angenalutho. Ukusebenzisa amabhola angenalutho ekusetshenzisweni kwengcindezi kubeka engcupheni enkulu yokuphepha.

Umshini Wokushintshwa Kwamabhola E-Valve kanye Nokwelashwa Komphezulu

Ukuqinisekisa ubulukhuni bebhola le-valve, ukwandisa impilo yesevisi ye-valve, nokuthuthukisa ukumelana nokuguguleka, ukwelashwa okukhethekile kwendawo (izingubo) kuvame ukusetshenziswa:

Ukubopha okuqinile:

Amasu anjenge-Stellite overlay (isb., i-Stellite 6, 21), ama-NiCrBSi alloys (isb., i-Ni60), noma i-Tungsten Carbide (WC) coatings akhulisa kakhulu ubulukhuni bomphezulu kanye nokumelana nokuklwebheka.

Ama-alloy e-High-Chrome:

Izembozo ezifana ne-13Cr zinikeza ukumelana nokugqwala okuthuthukisiwe kanye nokuguguleka.

Ukugaya nokufaka i-lapping ngokunembile (ngemuva kokufaka i-coating uma kusetshenziswa) kubalulekile ukuze kufezwe ukuqeda okudingekile kobuso (Ra ≤0.8μm) kanye nobubanzi bokuvala kahle.

Ukusebenzisana Kwebhola Levalvu Nezinye Izingxenye (Izihlalo Zevalvu)

Ukusebenza kwevalvu yebhola kuncike ekusebenzisaneni okunembile phakathi kwebhola levalvu, izihlalo, kanye nesiqu.

Izinhlelo Zokuvala Amabhola E-Valve kanye Nezihlalo

Izihlalo Ezithambile (PTFE/Elastomers njenge-NBR, EPDM):

Ifinyelela amazinga okuvuza aphansi kakhulu (≤10⁻⁶ m³/s, ISO 5208 Class A).

Izinga lokushisa elilinganiselwe (ngokuvamile ≤200°C).

Kuhle kakhulu ekuvalekeni okuqinile ezinsizeni ezihlanzekile.

Izihlalo Zensimbi (isb., iStellite, i-316SS, i-Hardfaced):

Ifanele amazinga okushisa aphezulu (kufika ku-540°C+) kanye nezinsizakalo zokukhuhla/zokugqwala.

Izinga lokuvuza lokuqala liphakeme kunezihlalo ezithambile kodwa lingafinyelela ukuvuza okuphansi (i-Class B/C/D) ngemva kokuhlanganisa ibhola nesihlalo kahle kakhulu (Ra ≤0.4μm).

Kubalulekile ekusetshenzisweni okuphephile emlilweni.

Amabhola e-Valve kuma-Floating vs. Trunnion Amabhola Agibele Ama-Trunnion

Indlela yokusekela ibhola ichaza izinhlobo ezimbili ezinkulu zama-valve:

Amavalvu Ebhola Elintantayo (Ngokuvamile ≤DN200):

Ibhola likhululekile ukuntanta kancane phansi komfula. Ukucindezela kwesistimu kusunduza ibhola esihlalweni esingezansi komfula ukuze kwakheke uphawu.

I-torque yokusebenza ephansi (isb., ≤50N·m yezibalo ze-DN100 nge-API 6D).

Umkhawulo: Uthambekele ekuthwaleni umthwalo wesihlalo ngokweqile kanye "nokuxinana" okungenzeka ngaphansi komfutho ophezulu; ngokuvamile kukhawulelwe ezilinganisweni ze-PN40 (Class 300).

Amavalvu Ebhola Afakwe I-Trunnion (Okwengcindezi Ephezulu kanye Ne-Bore Enkulu):

Ibhola linamathele kuma-trunnion bearings. Izihlalo zigcwele i-spring futhi zicindezelwe ngokumelene nebhola.

Inikeza ukuvala okuthembekile kakhulu, i-torque yokusebenza ephansi kakhulu (ikakhulukazi ngobukhulu obukhulu), kanye nokufaneleka kwengcindezi ephezulu kakhulu (PN100 / Class 600 nangaphezulu).

Ukusetshenziswa Okuvamile: Amapayipi kawoyela negesi abalulekile (isb., amavalvu e-DN300 trunnion alinganiswe nge-10MPa asetshenziswa kumaphrojekthi amakhulu njenge-West-East Gas Pipeline).

Amabhola e-Valve kuma-Valve e-Metal-Seat vs. Ama-Soft-Seat Ball Valve

Ukukhethwa kwezinto zebhola kanye nokwelashwa kwendawo kuhlobene kakhulu nohlobo lwesihlalo:

Amavalvu Ahlala Kahle:

Sebenzisa amabhola ajwayelekile ensimbi engagqwali (304/316). Isihlalo esithambile sivumelana kalula nobuso bebhola.

Amavalvu Ahlala Ngensimbi:

Kudingeka amabhola aqinile (isb., ngokusebenzisa ubuso obuqinile njengeStellite noma i-WC) ukuze umelane nokucindezeleka okuphezulu kokuthintana kanye nokuhuzuka ngokumelene nesihlalo sensimbi esiqinile ngokulinganayo. Ukulinganisa kahle ukuqeda kwendawo kubalulekile.

Ukuqhathaniswa Kwedatha Yezicelo Zemboni

Ukugcinwa: Izimpawu Zesexwayiso Zokulimala Kwebhola

Ukujula Kokuklwebheka >0.1mm:

Kubonisa umonakalo omkhulu womphezulu ophazamisa ukuvalwa; ukushintshwa kwebhola kuyimpoqo (ngokwesiqondiso se-ASME B16.34).

Ukwanda kweTorque Yokusebenza >20%:

Ibonisa ukuqina/ukuguquka kwesihlalo okungenzeka, ukungqubuzana okukhulu, noma ukungezwani kwebhola okudinga uphenyo.

Isiphetho: Uphahla Lokusebenza

Ukuklama, ukukhethwa kwezinto, kanye nokunemba kokukhiqiza kwebhola le-valve kuchaza ngokuyisisekelo imikhawulo yokusebenza ("uphahla") yanoma yiliphi i-valve yebhola. Kusukela ekukhetheni i-alloy efanele kanye nokwemboza kuya ekuyihlanganiseni nesistimu yokuvala efanele, isinyathelo ngasinye kumele sihambisane ngokucophelela nezimo ezithile zesevisi. Ngisho nokuphambuka okuncane ekhwalithini yebhola noma ukuhambisana kungaholela ekuhlulekeni kwe-valve ngaphambi kwesikhathi. Ukutshala imali kumabhola e-valve asezingeni eliphezulu kubaluleke kakhulu ekuphepheni, ukuthembeka, kanye nokuphila isikhathi eside ekusetshenzisweni okudinga amandla.