Nheyo yevhavha yekuvharisa vharafu inosunga zvinhu izvozvo! Valve inotakura gland uye shinda simba rekutarisa nzira

Nheyo yevhavha yekuvharisa vharafu inosunga zvinhu izvozvo! Valve kurongedza gland uye shinda simba rekutarisa nzira Valve chisimbiso kuita zvinodiwa, kudzivirira kuvuza Angle. Zvinoenderana nezvikamu zvakasiyana uye madhigirii ekudonha, kubuda kwevhavha kwakasiyana, saka zvinodikanwa kuisa pamberi akasiyana ekudzivirira kudonha matanho. Kuisa chisimbiso kudzivirira kuvuza, saka musimboti wekuvharisa valve zvakare kubva pakudzivirira kuvuza kutsvagisa. Pane zvinhu zviviri zvikuru zvinokonzeresa kuvuza, chimwe ndicho chinhu chikuru chinokanganisa kuita kwekuisa chisimbiso, ndiko kuti, pane mukaha pakati pevaviri vanoisa chisimbiso, chimwe chiripo pane musiyano wekumanikidza pakati pemativi maviri echisimbiso. Nheyo yekuisa chisimbiso chevharuvhu iri zvakare kubva kumvura yekuisa chisimbiso, gasi chisimbiso, leakage chiteshi chisimbiso chisimbiso uye valve yekuisa chisimbiso pairi uye zvimwe zvina zvinhu zvekuongorora Valve chisimbiso kuita zvinodiwa, kudzivirira kuvuza Angle. Zvinoenderana nezvikamu zvakasiyana uye madhigirii ekudonha, kubuda kwevhavha kwakasiyana, saka zvinodikanwa kuisa pamberi akasiyana ekudzivirira kudonha matanho. Nheyo yekuvhara vharafu Kuvhara ndeyekudzivirira kuvuza, saka musimboti wekuvharisa vharafu zvakare kubva pakudzivirira kuvuza kutsvagisa. Pane zvinhu zviviri zvikuru zvinokonzeresa kuvuza, chimwe ndicho chinhu chikuru chinokanganisa kuita kwekuisa chisimbiso, ndiko kuti, pane mukaha pakati pevaviri vanoisa chisimbiso, chimwe chiripo pane musiyano wekumanikidza pakati pemativi maviri echisimbiso. Nheyo yekuisa chisimbiso yevharuvhu iri zvakare kubva kumvura yekuisa chisimbiso, gasi chisimbiso, leakage chiteshi chekuisa chisimbiso uye vharafu sealing peya uye zvimwe zvina zvinhu zvekuongorora. Kusimba kwezvinwiwa Kusimba kwemvura kunoonekwa nekunaka kwayo uye kusimba kwepamusoro. Kana vharafu iri kubuda capillary yakazadzwa negasi, kudzvanya kwepamusoro kunogona kudzosera kana kudhirowa mvura mucapillary. Uye izvo zvinoumba tangent Angle. Kana iyo tangent Angle isingasviki 90 °, iyo mvura inoiswa mukati mecapillary tube, uye kubuda kunoitika. Chikonzero chekudonha chiri mumhando dzakasiyana dzepakati. Edza nenhau dzakasiyana, pasi pemamiriro akafanana, uchawana mhinduro dzakasiyana. Iwe unogona kushandisa mvura, mhepo, parafini, etc. Kana iyo tangent Angle yakakura kupfuura 90 °, kuvuza kuchaitika zvakare. Nekuda kwehukama nemafuta kana wakisi firimu pamusoro pesimbi. Kana aya mafirimu epamusoro anyungudutswa, hunhu hwesimbi inoshanduka, uye mvura, iyo yaimbodzingwa, inonyorovesa pamusoro nekudonha. Tichifunga nezve mamiriro ari pamusoro, maererano nePoisson's formula, chinangwa chekudzivirira kudonha kana kuderedza kudonha kunogona kuitika pasi pemamiriro ekudzikisa capillary dhayamita uye yepakati viscosity. Kusimba kwegasi Zvinoenderana neformula yaPoisson, kusimba kwegasi kune hukama nemamorekuru egasi uye viscosity yegesi. Kudonha kunopesana nekureba kwecapillary uye viscosity yegesi, uye yakaenzana nedhayamita ye capillary uye simba rekutyaira. Kana iyo dhayamita ye capillary uye avhareji madhigirii ekusununguka kwemamorekuru egasi akafanana, mamorekuru egasi anoyerera achipinda mucapillary nemahara emafuta ekufamba. Naizvozvo, kana tichiita bvunzo yekuisa chisimbiso chevhavha, iyo yepakati inofanira kunge iri mvura kuita basa rekuisa chisimbiso, nemhepo kana gasi haigone kuita basa rekuisa chisimbiso. Kunyange kana tikaderedza capillary dhayamita pazasi gasi molecule nepurasitiki deformation, kuyerera kwegasi hakugoni kumira. Chikonzero ndechekuti gasi rinogona kuramba richipararira kuburikidza nemadziro esimbi. Saka kana isu tichiita gasi bvunzo, isu tinofanirwa kuve takasimba kupfuura bvunzo yemvura. Chisimbiso cheiyo leakage chiteshi Chisimbiso chevharuvhu chinoumbwa nezvikamu zviviri, roughness, iyo inoumbwa nekukasharara kwekusaenzana kwakapararira pane waveform surface uye kupenya kwechinhambwe pakati penhongonya. Pasi pemamiriro ekuti simba rekumanikidza rezvinhu zvakawanda zvesimbi rakaderera munyika yedu, isu tinofanirwa kukwidza zvinodikanwa zvekumanikidza kwesimba resimbi, ndiko kuti, simba rekumanikidza rezvinhu rinofanira kudarika elasticity, kana tichida kuwana sealing state. Naizvozvo, mukugadzirwa kwevharuvhu, peya yekuisa chisimbiso yakasanganiswa neimwe kuoma kwakasiyana kuti ienderane, pasi pekuita kwekumanikidza, inoburitsa imwe dhigirii yepurasitiki deformation sealing effect. Kana iyo yekuisa chisimbiso iri simbi zvinhu, ipapo isina kuenzana convex poindi yepasi ichaonekwa kare, pakutanga kwekudiwa kwekushandisa mutoro mudiki unogona kuita aya asina kuenzana convex point epurasitiki deformation. Kana iyo yekubatana ikawedzera, kusaenzana kwepamusoro kuchava epurasitiki - elastic deformation. Ipapo kushata kwezviso zviviri munzvimbo ine concave kuchavapo. Idzi nzira dzakasara dzinogona kugadzirwa kuti dzikwane kana mutoro unokonzera kukanganisa kwakanyanya kwepurasitiki yechinhu chiri pasi ichiiswa uye nzvimbo mbiri dziri pedyo nepedyo, pamwe nemutsara unoenderera uye munzira yemhete. Valve sealing pair Ivharuvha seal pair ndiyo chikamu chechigaro chevharuvhu uye shutoff inovhara kana dzasangana. Iyo simbi yekuisa chisimbiso pamusoro inokonzeresa kukuvara kubva ku clamping media, media corrosion, kupfeka zvimedu, cavitation uye erosion panguva yekushandiswa. Zvakadai sokupfeka zvimedu. Kana zvimedu zvekupfeka zvidiki pane kushata kwepamusoro, iko kurongeka kwepamusoro kuchavandudzwa kana nzvimbo yekuisa chisimbiso ichiiswa mukati, uye haizoparari. Pane kudaro, ichaita kuti kurongeka kwepamusoro kuwedzere. Nokudaro, pakusarudzwa kwezvimedu zvekupfeka, zvinhu, mamiriro ekushanda, lubricity uye corrosion yenzvimbo yekuisa chisimbiso inofanira kutariswa zvakakwana. Sezvimedu zvekupfeka, patinosarudza zvisimbiso, tinofanira kunyatso funga zvinhu zvakasiyana-siyana zvinokanganisa mashandiro avo kuitira kuti titambe basa rekudzivirira kubuda. Naizvozvo, zvinhu zvinoramba kukoromoka, abrasion uye kuvhuvhuta zvinofanirwa kusarudzwa. Zvikasadaro, kushomeka kwechero ipi yezvinodiwa kuchaita kuti yekuisa chisimbiso kuita kwayo ** kuderedzwa. Zvinhu zvikuru zvinokanganisa chisimbiso chevhavha Pane zvinhu zvakawanda zvinokanganisa chisimbiso chevhavha, kunyanya zvinotevera: Chisimbiso pair pairing Pasi pekuchinja kwekushisa kana simba rekuvhara, chimiro chekuvhara chisimbiso chichachinja. Uye kuchinja uku kuchakanganisa uye kuchinja chisimbiso chekuvhara pakati pesimba, kuitira kuti kushanda kwevhavha chisimbiso kuderedzwa. Nokudaro, pakusarudza zvisimbiso, tinofanira kusarudza zvisimbiso zvine elastic deformation. Panguva imwecheteyo, teerera kuhupamhi hwechisimbiso chepamusoro. Chikonzero ndechekuti kusangana kwepamusoro peiri yekuisa chisimbiso haina kunyatsoenderana. Kana hupamhi hwechisimbiso chepamusoro hunowedzera, zvakakosha kuwedzera simba rinodiwa pakuvhara. Kunyanya kudzvinyirirwa kwechisimbiso chepamusoro Kudzvinyirirwa kwakananga kwechisimbiso chepamusoro kunokanganisa kushanda kwekuvhara uye hupenyu hwebasa revhavha. Naizvozvo, iyo yekuisa chisimbiso pamusoro pekumanikidza zvakare chinhu chakakosha. Pasi pemamiriro akafanana, kudzvanyirira kwakanyanya kunokonzeresa kukuvadzwa kwevharuvhu, asi kushomeka kwakanyanya kunokonzeresa kuvuza. Nokudaro, tinofanira kunyatsofungisisa kudzvinyirirwa kwakananga mukugadzirwa kweiyo yakakodzera. Zvimiro zvemuviri zvepakati Zvimiro zvemuviri zvepakati zvinokanganisawo kushanda kwevhavhavha chisimbiso. Izvi zvimiro zvemuviri zvinosanganisira tembiricha, viscosity, uye pamusoro hydrophilicity. Kuchinja kwekushisa hakusi kungokanganisa kusununguka kwechikwata chekuisa chisimbiso uye ukuru hwezvikamu, asiwo kune hukama husingaparadzanisiki ne viscosity yegesi. Iyo viscosity yegesi inowedzera kana kuderera nekuwedzera kana kuderera kwekushisa. Nokudaro, kuitira kuti tideredze kukanganiswa kwekushisa pakushanda kwekuvhara kwevhavha, tinofanira kugadzira peya yekuisa chisimbiso muchigaro chinoshanduka uye mamwe mavharuvhu ane muripo wekupisa. Viscosity inoenderana nekupenya kwemvura. Pasi pemamiriro akafanana, iyo yakakura viscosity, iyo isinganyanyi kupinza mvura. Surface hydrophilicity zvinoreva kuti kana paine firimu rakatetepa pamusoro pesimbi, iyo firimu inofanira kubviswa. Nekuda kweiyi firimu rakatetepa remafuta, rinoparadza hydrophilicity yepasi, zvichitungamira kuvharika kwenzira dzemvura. Hunhu hwekuisa chisimbiso pairi Chisimbiso mhando inonyanya kureva kusarudzwa kwezvinhu, kuenzanisa, kugadzira chaiko pacheki. Semuenzaniso, dhisiki inokwana zvakanaka nechigaro chekuvhara kumeso kuti uvandudze kusimba. Hunhu hwemamwe ma ring corrugations ndeyekuti yayo labyrinth sealing performance yakanaka. Kubuda kwevharuvhu kwakajairika muhupenyu uye kugadzirwa, mwenje unogona kukonzera tsvina, kana kuunza njodzi kuhupenyu, senge pombi yemvura valve kuvuza, kana kukonzera zvakakomba mhedzisiro, senge indasitiri yemakemikari ine chepfu uye inokuvadza, inopisa, inoputika uye inoparadza yepakati kuvuza mukati. chimiro che, kutyisidzira kwakakomba kuchengeteko yemunhu uye kuchengetedzwa kwemidziyo, uye tsaona dzekusvibiswa kwezvakatipoteredza. Ivhavha inoenderana nekunze kwesimba rekutenderera dhiraivha kuti ivhure uye ivhare inogadzirwa nechisimbiso chinoshandiswa muvhavha yekurongedza ine imwe nhamba yezvindori zvekurongedza, kuitira kuti iwane chisimbiso mhedzisiro, asi chii chiri chisimbiso mamiriro? Valve inorongedza kuvuza ndiyo imwe yenzvimbo dzakanyanya kutambudzika yevhavha kuvuza kukanganisa, asi pane zvingangoita zvikonzero zviviri. Rudzi rwevharuvhu chisimbiso Zvisimbiso zvakare zvakakosha zvikamu mumavharuvhu. Kuiswa chisimbiso kwevhavha kunoreva kugona kwezvikamu zvekuvharisa zvevhavha kudzivirira kubuda kwenhau, ndiyo inonyanya kukosha tekinoroji performance index yevhavha. Pane zvikamu zvitatu zvekuisa chisimbiso zvevhavha: Kubatana pakati pezvikamu zvekuzarura nekuvhara uye nzvimbo yekuisa chisimbiso chechigaro; Iyo yakakodzera yekurongedza uye vharafu hunde uye stuffing bhokisi; Joint yemuviri nebhoneti. Iyo yaichimbova inovuza Inonzi ENDoleaker, inowanzo ZIWANWA seyakasununguka PEDYO, UYE ICHABVISA KUKWANISA KWE VALVE KUKAMUTSA svikiro. Kune kirasi yevhavha yakachekwa, kubuda kwemukati hakubvumirwi. Kudonha kuviri kwekupedzisira kunonzi kuvuza, ndiko kuti, kubuda kwepakati kubva kuvharuvhu kuenda kuvharuvhu. Kubvinza kuchakonzera kurasikirwa kwezvinhu, kusvibiswa kwemhoteredzo, uye tsaona dzakakomba. Kune zvinopisa, zvinoputika, zvine chepfu kana radioactive midhiya, kuvuza hakubvumidzwe, saka vharafu inofanirwa kuve neyakavimbika yekuisa chisimbiso. Maitiro ekugadzirisa dambudziko rekuisa chisimbiso haana hanya, iyo valve inomhanya, njodzi, kudonha, leakage phenomenon, mazhinji edhipatimendi akaitika pano. Pazasi isu tichatarisa iyo valve ine simba sealing, static yekuisa chisimbiso dambudziko. Dynamic seal Valve ine simba chisimbiso, iyo huru yemunwe valve stem chisimbiso. Usarege vheji yepakati nekufamba kwedzinde uye kuvuza, ndiyo valve ine simba seal yepakati musoro. Kurongedza bhokisi fomu: valve ine simba chisimbiso, kunyanya kurongedza bhokisi. Iyo yakakosha fomu yekuisa bhokisi ndeye: 1, gland mhando: iyi iri mumhando dzakawanda. Yakabatana fomu inogonawo kusiyanisa zvakawanda zvakawanda. Semuenzaniso, maererano nekumanikidza mabhaudhi, anopatsanurika T-mabhoti (yepasi kudzvinyirira mavharuvhu ane kumanikidza ≤16 kg/cm2), kaviri musoro mabhaudhi uye inofambiswa mabhaudhi akabatana, nezvimwewo Kubva gland, inogona kukamurwa kuita yakakosha uye yakabatanidzwa. 2, kudzvanya nut type: rudzi urwu rwechimiro, saizi yekunze idiki, asi simba rekudzvanya rinogumira, rinongoshandiswa mumavharuvhu madiki. Kurongedza: mubhokisi rekutakura, kurongedza kunosangana zvakananga nevhavha stem uye yakazadzwa nebhokisi rekutakura kudzivirira kubuda kwepakati. Pane zvinotevera zvinodiwa pakurongedza: Kuisa chisimbiso chakanaka; Corrosion resistance; Diki friction coefficient; Teerera nepakati tembiricha uye kumanikidza.