Raws li cov khoom tseem ceeb hauv kev tswj cov dej hauv kev lag luam, cov khoom tshwj xeeb li qub ua ke nrog ntau yam txuj ci xws li cov ntaub ntawv science, mechanical engineering, thiab fluid mechanics hauv lawv cov qauv tsim thiab kev tsim khoom.Lawv tau siv dav hauv kev thov kev siv xws li lub zog, tshuaj engineering, thiab aerospace. Piv nrog rau cov pa li qub, tshwj xeeb li qub tswj kev ua tau zoo txawm tias nyob rau hauv kev ua haujlwm hnyav (xws li kub kub, siab siab, thiab corrosive lossis radioactive ib puag ncig). Lawv cov txheej txheem kev nyuaj thiab lub hom phiaj ua haujlwm txawv ntawm qhov dav dav - lub hom phiaj li qub.
I. Core Technical yam ntxwv ntawm Tshwj xeeb li qub
Technical breakthroughs nyob rau hauv tshwj xeeb li qub yog feem ntau xav txog nyob rau hauv cov khoom xaiv. Piv txwv li, rau siab - kub thiab siab - siab chav tshuab, nickel-raws li alloys (xws li Inconel 718) los yog ceramic-coated valve lub cev yog siv los tiv taus kub tshaj 600℃thiab siab ntawm 300 MPa. Nyob rau hauv ib puag ncig acidic thiab alkaline, Hastelloy los yog polytetrafluoroethylene (PTFE) liners zoo tiv thaiv tshuaj tua kab mob. Thib ob, hais txog kev tsim qauv, tshwj xeeb li qub feem ntau muaj ntau-theem sealing tshuab (xws li lub tshuab nqus hlau foob + graphite packing ua ke), ua ke nrog hydraulic lossis pneumatic actuators kom ua tiav millisecond- theem teb ceev thiab xyuas kom xoom xau. Tsis tas li ntawd, qee qhov siab -kawg li qub ua ke nrog cov ntse ntsuas qhov ntsuas uas saib xyuas qhov qhib, qhov sib txawv ntawm qhov sib txawv, thiab hnav cov xwm txheej hauv lub sijhawm los kwv yees qhov ua tsis tiav thiab ua kom zoo dua qub.
II. Cov xwm txheej ntawm daim ntawv thov thiab xaiv cov ntsiab lus tseem ceeb
Hauv kev lag luam roj thiab roj, sulfur-corrosion-cov pob valve yog siv rau hauv lub taub hau uas muaj hydrogen sulfide (H₂S). Lawv lub rooj zaum valve muaj cov qauv kev sib khi ua ke thiab tuaj yeem tiv taus zoo siab txog li 15,000 psi. Hauv cov tshuab hluav taws xob hluav taws xob, nuclear- qib kev nyab xeeb li qub yuav tsum tau ua raws li kev sim ntsuas seismic thiab LOCA (poob- ntawm- kev sib tsoo txias) kom ntseeg tau tias kev ua haujlwm zoo ntawm lub reactor coolant circuit nyob rau hauv cov xwm txheej hnyav. Hauv kev lag luam chemical, cov npauj npaim cryogenic li qub (ua haujlwm ntawm qhov kub thiab txias li -196 degree) tau dav siv hauv cov roj liquefied natural gas (LNG) kis. Lawv lub valve stems siv lub tshuab nqus tsev rwb thaiv tsev los tiv thaiv cov dej khov tsim thiab jamming.
Thaum xaiv lub valve, nws yog ib qho tseem ceeb uas yuav tau xav txog qhov sib haum ntawm kev khiav hauj lwm tsis. Rau cov xov xwm granular (xws li ore slurry lossis catalyst slurry), ncaj-los ntawm riam rooj vag li qub yog nyiam kom txo qis kev puas tsuaj. Rau siab -precision flow control, V- zoo li lub pob li qub los yog eccentric rotary li qub tau pom zoo, raws li lawv cov yam ntxwv ntws nkhaus mus txog qhov feem pua. Tsis tas li ntawd, electromagnetic compatibility (EMC) thiab tawg- ntawv pov thawj pov thawj (xws li ATEX cov qauv) yog qhov tseem ceeb rau qhov chaw tawg thiab tawg.
III. Txoj Kev Loj Hlob thiab Kev Sib Tw
Tam sim no thev naus laus zis frontiers tsom rau digitalization thiab kev tsim kho tshiab. Kev txawj ntse tshwj xeeb li qub ua rau muaj kev kuaj mob nyob deb dhau los ntawm Internet ntawm Yam (IoT) platform thiab, ua ke nrog cov cuab yeej digital ntxaib, kwv yees lub neej kev pabcuam ntxiv. Kev tiv thaiv ib puag ncig yog tsav kev siv cov hlau lead-cov ntaub ntawv tsis pub sib khi thiab qis- qauv tsim tawm, ua kom lub valve tso tawm qis dua 1 × 10⁻⁶ mbar·L / s. Txawm li cas los xij, kev tsim kho tshwj xeeb li qub tseem ntsib cov teeb meem ntawm cov nqi. Piv txwv li, tus nqi ntawm ib qho chaw aerospace - qib cryogenic valve (kev ua haujlwm ntawm -253℃hauv cov kua hydrogen) tuaj yeem ncav cuag ntau lab daus las, thiab cov khoom siv me me tuaj yeem ua rau cov nqi qis dua. Nyob rau hauv lub neej yav tom ntej, daim ntawv thov ntawm additive manufacturing (3D printing) technology yuav tsum txo cov khoom noj los ntawm topological optimization ntawm cov qauv thaum txhim kho lub machining raug ntawm txoj kev khiav txoj kev.
Kev siv thev naus laus zis hauv kev tshwj xeeb li qub txuas ntxiv thawb cov ciam teb ntawm kev lag luam kev ntseeg tau. Lawv txoj kev loj hlob tsis yog tsuas yog los ntawm kev ua tiav hauv cov ntaub ntawv yooj yim tab sis kuj yog kev sib koom tes ntawm kev sib koom tes tsim kho tshiab kom tau raws li qhov xav tau ntawm daim ntawv thov nruj dua.