Basa rechigaro chevhavha: rinoshandiswa kutsigira nzvimbo yakavharwa zvakakwana yevhavha yepakati uye kugadzira chisimbiso chechipiri.

Basa reDisc: Disc - spherical disc iyo inowedzera kusimudza uye inoderedza kudonha kwekumanikidza. Yakaomeswa kuti iwedzere hupenyu hwesevhisi.

Basa revhavha core: Iyo yevhavha core mukumanikidzakuderedza vharafundicho chimwe chezvikamu zvikuru zvekudzora kumanikidzwa.

Valve chigaro maitiro: Corrosion uye kupfeka kuramba; Nguva yakareba yekushanda; High pressure resistance; High dimensional yakarurama; Kupokana kwakanakisa kumitoro yekukanda uye kupisa kwakanyanya; Inokodzera mota zhinji dzevafambi, marori akareruka uye anorema, injini dzedhiziri uye dzakamira Maindasitiri enjini.

Valve disc features: Iine inogadziriswa yekumisikidza basa kudzivirira iyo valve body shell wall kubva pakupinzwa. Iyo yakasarudzika clamshell butterfly plate cheki valve ine yakavakirwa-mukati butterfly plate hinge pini, iyo isingabvisi chete mukana wepini yehinge inobaya imba yevharuvhu kuti ibude, asi zvakare inoita kuti chigaro chevharuvhu chive nyore kugadzirisa nekuti bracket yemuchina inofanana chigaro chevhavha pamusoro. Gadzirisa disc/seat.

Zvimiro zvepakati pevharuvhu: Kana iyo core inotenderera ichitenderera, forogo kumucheto kwezasi kweiyo inotenderera inotyaira ndiro inofambisa yevharuvhu kuti itenderere, kuitira kuti gomba rekubuda kwemvura paplate yevharuvhu inoenderana negomba remvura rinopinda pairi kufamba. vharafu ndiro. static valve plate, uye pakupedzisira mvura inoyerera ichibuda kubva pakati inotenderera. Kuburikidza ne-gomba kubuda, dhizaini iyi inoshandiswa zvakanyanya munzvimbo dzepombi.

Mhedziso yechigaro chevhavha: Shandisa elastic sealing material uye diki actuator thrust kuti uwane chisimbiso chisina mhepo. Iyo yekuisa chisimbiso yekumanikidza chigaro chevharuvhu inoita kuti zvinhu zvisanduke uye kusvina munzvimbo ine hutsinye hwechikamu chesimbi yekubatanidza kuvhara chero kuvuza. nzira. Kupinda kwezvinhu kumvura ndiyo hwaro hwekudonha kudiki.

Valve disc overview: siketi rudzi disc sealing mhete. Iyo utility modhi inoburitsa siketi-mhando vharafu disc sealing ring. Chimiro chayo chechimiro ndechekuti chisimbiso pakati pechisimbiso chemhete nevhavha disc body chisimbiso chine mativi maviri. Chikamu chelongitudinal panzvimbo yekuisa chisimbiso pakati pemhete yekuisa chisimbiso uye valve disc body ndiyo trapezoidal plane space.

Valve core overview: Iyo valve core chikamu chevharuvhu chinoshandisa kufamba kwemuviri wevhavha kuti uwane mabasa ekutanga ekutungamira kutungamira, kudzora kudzvinyirira kana kuyerera kuyerera.

Iyo inobviswa yekupedzisira yechiso chikamu muvharuvhu inoshandiswa kutsigira iyo yakazara yakavharwa chinzvimbo chevhavha core uye kugadzira chisimbiso peya. Kazhinji, dhayamita yechigaro chevharuvhu ndiyo yakanyanya kuyerera dhayamita yevharuvhu. Semuenzaniso, mavharuvhu e butterfly anouya mumhando dzakasiyana dzezvigaro. Iyo vharafu chigaro zvinhu zvinogona kugadzirwa akasiyana rabha, epurasitiki, uye simbi zvinhu, senge: EPDM, NBR, NR, PTFE, PEEK, PFA, SS315, STELLITE, nezvimwe.

Zvinhu zvinofanirwa kutariswa pakusarudza chigaro chevharuvhu chakapfava ndeichi:
1) Fluid kuenderana, kusanganisira kuzvimba, kuomarara kurasikirwa, permeability uye kudzikisira;
2) Kuoma;
3) Permanent deformation;
4) Chiyero chekupora mushure mekubvisa mutoro;
5) Tensile uye compressive simba;
6) Deformation isati yaputika;
7) Elastic modulus.

Disc

Ivhavha disc ndiyo nheyo yevhavha, inova imwe yezvikamu zvakakosha zvevhavha. Iyo inotakura zvakananga kumanikidzwa kwepakati muvharuvhu. Zvishandiso zvinoshandiswa zvinofanirwa kuenderana ne "Valve Pressure uye Temperature Kirasi" mirau.

Zvishandiso zvinonyanya kushandiswa zvinosanganisira zvinotevera:
1. Grey cast iron: Grey cast iron inokodzera mvura, steam, mhepo, gasi, mafuta uye mamwe ma media ane zita rekumanikidza PN ≤ 1.0MPa uye kutonhora kwe -10 ° C kusvika 200 ° C. Anowanzo shandiswa mamakisi egrey cast iron ndeaya: HT200, HT250, HT300, uye HT350.
2. Inoshandiswa simbi yakakandwa: inokodzera mvura, chiutsi, mhepo uye mafuta midhiya ine zita rekumanikidza PN≤2.5MPa uye tembiricha ye -30 ~ 300 ℃. Anowanzo shandiswa mamakisi anosanganisira: KTH300-06, KTH330-08, KTH350-10.
3. Ductile iron: inokodzera mvura, chiutsi, mhepo, mafuta uye mamwe midhiya nePN≤4.0MPa uye tembiricha -30 ~ 350 ℃. Anowanzo shandiswa mamakisi anosanganisira: QT400-15, QT450-10, QT500-7.
Tichifunga nezveyazvino tekinoroji level, mafekitori akasiyana haana kuenzana, uye kuongorora kwevashandisi kunowanzo kuve nekunetseka. Kubva pane zvakaitika, zvinokurudzirwa kuti PN≤2.5MPa uye zvinhu zvevhavha zvinofanira kuva simbi kuti zvive nechokwadi chekuchengeteka.
4. Acid-resistant high-silicon ductile iron: inokodzera corrosive media ine nominal pressure PN ≤ 0.25MPa uye tembiricha iri pasi pe120 ° C.
5. Carbon steel: inokodzera midhiya yakadai semvura, steam, mhepo, hydrogen, ammonia, nitrogen uye petroleum zvigadzirwa zvine zita rekumanikidza PN ≤ 32.0MPa uye tembiricha ye -30 ~ 425 ° C. Inowanzo shandiswa mamakisi anosanganisira WC1, WCB, ZG25, yepamusoro-mhando simbi 20, 25, 30 uye yakaderera-alloy structural simbi 16Mn.
6. Copper alloy: inokodzera mvura, mvura yegungwa, okisijeni, mhepo, mafuta uye mamwe ma media ane PN≤2.5MPa, pamwe chete nemhepo yemhepo ine tembiricha ye -40 ~ 250 ℃. Magiredhi anowanzo shandiswa anosanganisira ZGnSn10Zn2 (tin bronze), H62, Hpb59-1 (brass), QAZ19-2, QA19-4 (aluminium bronze).
7. High tembiricha mhangura: yakakodzera mupfu uye petroleum zvigadzirwa zvine zita rekumanikidza PN≤17.0MPA uye tembiricha ≤570℃. Magiredhi anowanzo shandiswa anosanganisira ZGCr5Mo, 1Cr5M0, ZG20CrMoV, ZG15Gr1Mo1V, 12CrMoV, WC6, WC9 nemamwe mamakisi. Sarudzo chaiyo inofanirwa kuenderana nekumanikidza kwevharuvhu uye tembiricha yakatarwa.
8. Yakaderera-tembiricha simbi, akakodzera zita kumanikidzwa PN≤6.4Mpa, tembiricha ≥-196℃ ethylene, propylene, liquefied gasi, mvura nitrogen uye mamwe midhiya, anowanzo shandiswa mabhurendi) zvinosanganisira ZG1Cr18Ni9, 0Cr18Ni9, 1CrNi8Cr18Cr09Cr. simbi acid-resistant simbi, yakakodzera Nokuda kwezita rekumanikidza PN≤6.4Mpa, tembiricha ≤200℃ nitric acid, acetic acid uye mamwe midhiya, mabhureki anowanzoshandiswa ndeye ZG0Cr18Ni9Ti, ZG0Cr18Ni10 , ZG0Cr18Ni12Mo2Ti, ZG1Cr18Ni12Mo2Ti

vharafu core
Iyo valve core inhengo yevharuvhu inoshandisa kufamba kwayo kuti iite mabasa ekutanga ekutungamira kutungamira, kudzvanya kudzora kana kuyerera.

Classification
Zvinoenderana nemaitiro ekufambisa, yakakamurwa kuita rudzi rwekutenderera (45 °, 90 °, 180 °, 360 °) uye shanduro yemhando (radial, inotungamira).
Zvinoenderana nechimiro, inogona kazhinji kukamurwa kuita spherical (bhora vharafu), conical (plug valve), disc (butterfly vharafu, gedhi vharafu), dome-shaped (stop valve, cheki vharafu) uye cylindrical (inodzosera vharafu).
Kazhinji yakagadzirwa nendarira kana simbi isina tsvina, kune zvakare mapurasitiki, naironi, ceramics, girazi, nezvimwe.
Ivhavha yepakati muvhavha yekuderedza kudzvinyirira ndechimwe chezvinhu zvikuru zvekudzora kudzvinyirira.