Globe Vagadziri Vagadziri

Globe vharafu zvakare Stop vharafu, Globe Stop Mavharuvhu ndeimwe yeanonyanya kushandiswa mavharuvhu. Inofarirwa nekuti kukakavara pakati penzvimbo dzekuvhara panguva yekuvhura nekuvhara idiki, inogara yakasimba, kureba kwekuvhura hakuna kukwirira, kuri nyore kugadzira uye kuri nyore kuchengetedza. Haisi chete yakakodzera kune yepakati uye yakaderera kudzvinyirira, asiwo yakakodzera kune yakakwirira. Nheyo yekuvhara yevhavha yekumisa ndeyekuita chisimbiso chepamusoro chevhavha disc uye chisimbiso chepamusoro pechigaro chevhavha chinonyatsoenderana nekumanikidzwa kwehunde yevhavha kudzivirira yepakati kubva pakuyerera. Nokudaro, rudzi urwu rwevhavha yekuvhara-vhavha yakanyatsokodzera kucheka kana kudzora uye throttling. Nekuti tsinga yevharuvhu kuvhura kana kuvharika kwerudzi urwu rwevharuvhu ipfupi, uye ine yakavimbika kwazvo yekucheka-kubvisa basa, uye nekuti shanduko yekuvhurwa kwechigaro chevhavha iri yakanangana nekurohwa kwevhavha disc, ndizvo. yakanyatsokodzera kudzora kuyerera.

Kushanda musimboti uye hunhu hwekumira vharafu

Ivhavha inoita basa rakakosha mukucheka uye kupuruzira svikiro mupombi pairi. Sevhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavha yekumisa yakakosha zvikuru,kuisa chisimbiso chevharuvhu yekumisa torque kune hunde yevharuvhu, uye dzinde revharuvhu rinomanikidza dhisiki yevhavha munzira yeaxial, kuitira kuti chisimbiso chevhavha disc uye chisimbiso pamusoro pechigaro chevharuvhu chakanyatsokodzera, uye kudzivirira yepakati kubva pakudonha nepakati pepakavharika.

Iyo yekuisa chisimbiso chevhavha yekumisa inoumbwa nekuvharisa pamusoro pevhavha disc uye yekuvharisa pamusoro pechigaro chevhavha. Dzinde revharuvhu rinotyaira dhisiki yevharuvhu kuti ifambe yakatwasuka pamutsara wepakati pechigaro chevharuvhu. Ivhavha yekumisa ine hurefu hudiki hwekuvhura mukuita kwekuvhura nekuvhara, iyo iri nyore kugadzirisa kuyerera, yakanakira kugadzira nekugadzirisa, uye ine huwandu hwakawanda hwekumanikidza maapplication.

Kuenzaniswa nevhavha yegedhi, imwe inowanzoshandiswa block valve mukugadzirwa kwemaindasitiri, iyo yekumisa valve iri nyore mukugadzirisa uye iri nyore kugadzira nekuchengetedza. Panyaya yehupenyu hwebasa, nzvimbo yekuvharisa yevhavha yekumira haisi nyore kupfeka uye kukwenya, uye dhisiki yevharuvhu uye_ Hapana hama inotsvedza pakati penzvimbo yekuisa chisimbiso chechigaro, saka kupfeka nekukwenya pamusoro pechisimbiso kudiki. , saka hupenyu hwebasa rekuvhara chisimbiso hunovandudzwa. Iyo valve disc stroke idiki panguva yekuvhara yakazara yevhavha yekumisa, uye kureba kwayo kudiki pane iyo yevhavha yesuwo. Izvo zvisingabatsiri zvevhavha yekumira ndeyekuti kuvhura nekuvhara torque yakakura uye zvakaoma kuona nekukurumidza kuvhura nekuvhara. Nekuda kwekuti chiteshi chekuyerera chiri mumuviri wevharuvhu chine tortuous uye kuyerera kwemvura kunopikisa kwakakura, simba remvura rinorasika mupombi.
unhu

(1) Chimiro chevhavha yekumisa chiri nyore kupfuura chevhavha yegedhi, uye kugadzira nekugadzirisa zviri nyore.

(2) Nzvimbo yekuisa chisimbiso haisi nyore kupfeka uye kukwenya, nekuita kwakanaka kwekuvhara. Iko hakuna hama inotsvedza pakati pevharuvhu disc uye chisimbiso pamusoro pemuviri wevharuvhu panguva yekuvhura nekuvhara, saka kupfeka nekukwenya hakuna kukomba, nekuita chisimbiso kwakanaka uye hupenyu hurefu hwebasa.

(3) Panguva yekuvhura nekuvhara, valve disc stroke idiki, saka kureba kwevhavha yekumisa idiki pane iyo yevhavha yegedhi, asi chimiro chechimiro chakareba kupfuura icho chevhavha yegedhi.

(4) Kuvhura nokuvhara torque yakakura, kuvhura nekuvhara kunonetsa, uye kuvhura nekuvhara nguva yakareba.

(5) Kuramba kwemvura kwakakura. Nekuti iyo yepakati chiteshi mumuviri wevharuvhu inoshungurudza, kuramba kwemvura kwakakura uye mashandisiro emagetsi akakura.

(6) Kana iyo yekumanikidza yezita mukati mepakati inoyerera nzira iPN ≤ 16MPa, kuyerera kwepasi kunowanzo kugamuchirwa, uye yepakati inoyerera ichikwira kumusoro kubva kuzasi nzira yevhavha disc; Kana iyo yekumanikidza yezita iri PN ≥ 20MPa, kuyerera kwekudzoka kunowanzo kugamuchirwa, uye yepakati inoyerera ichidzika kubva kuvharuvhu disc kuti iwedzere chisimbiso chechinhu simba. Mukushandiswa, iyo yepakati yevhavha yekumira inogona kungoyerera mune imwe nzira, uye kuyerera kwekutungamira hakugone kuchinjwa.

(7) Ivhavha disc inowanzosvibiswa kana yakazarurwa zvakakwana.

Iyo stem axis yevhavha yekumisa inotenderera kune yekuvharisa pamusoro pechigaro chevharuvhu. Kuvhura kana kuvhara kwevhavha tsvimbo ipfupi, uye ine yakavimbika yekucheka chiito, iyo inoita kuti valve iyi ikwane pakucheka kana kudzora svikiro uye throttling.

kupfupisa

Mabhero mavharuvhu

Mabhero mavharuvhu

1. Kupokana kwemvura yevhavha yekumisa yakakura, uye simba rinodiwa pakuvhura nekuvhara rakakura.

2. Ivhavha yekumira haina kukodzera pakati nepakati nezvikamu, high viscosity uye nyore coking.

3. Kugadzirisa kushanda kwevhavha yekumira kwakashata.

Advantage

1. Ivhavha yekumisa iri nyore mukugadzirisa uye iri nyore mukugadzira nekugadzirisa.

2. Ivhavha yekumisa ine diki yekushanda sitiroko uye kupfupika kuvhura nekuvhara nguva.

3. Ivhavha yekumira ine kushanda kwakanaka kwekuvhara, simba duku rekukwevera pakati pekuisa chisimbiso uye hupenyu hurefu hwebasa.

Mhando dzemavharuvhu ekumisa dzakakamurwa kuita ekunze shinda mhando yekumisa mavharuvhu uye yemukati shinda mhando yekumisa mavharuvhu zvichienderana nenzvimbo yevharuhu stem shinda. Zvinoenderana negwara rekuyerera kwepakati, kune mavharuvhu akatwasuka-akatwasuka, mavharuvhu akananga akachekwa uye mavharuvhu akacheka-makona. Mavharuvhu ekumisa akakamurwa kuita kurongedza akavharirwa mavharuvhu ekumisa uye mabhero akavharirwa mavharuvhu ekumisa zvinoenderana nemafomu ekusimbisa.
Zvinoenderana negwara rechiteshi

1) Kururamisa-kubvisa valve

2) Yakananga kuyerera kwevhavhavhavhavha: mune yakananga kuyerera kana Y-yakaita yekumira vharafu, iyo inoyerera yemuviri wevhavha uye iyo huru yekuyerera chiteshi inoumba mutsara weoblique, saka dhigirii rekukuvadza rekuyerera idiki pane iro rakajairwa. kumisa vharafu, saka kurasikirwa kwekumanikidza kuburikidza nevhavha inoenderana idiki.

3) Angle stop valve: muvhavha yekumira yekona, mvura inongofanira kushandura nzira kamwe chete, kuitira kuti kudonha kudonhe kuburikidza nevhavha idiki pane yevhavhavha yekumira.

4) Plunger type stop valve: iyi mhando yevhavha yekumisa ndeyekusiyana kweyakajairwa yekumisa vharafu. Muvharuvhu iyi, dhisiki uye chigaro zvinowanzogadzirwa zvichibva pane plunger musimboti. Ivharuvhu disc inokwenenzverwa kuita cylindrical plug uye yakabatana nevharuvhu hunde. Kuiswa chisimbiso kunoitwa nemhete mbiri dzekuisa chisimbiso dzakaiswa maoko pane plunger. Zvindori zviviri zvekuisa chisimbiso zvakapatsanurwa nekorari, uye mhete yekuisa chisimbiso yakatenderedza plunger inotsikirirwa zvakasimba nemutoro unoiswa pabhoneti nebhoneti nut. Iyo elastic yekuisa chisimbiso mhete inogona kutsiviwa uye inogona kugadzirwa nezvinhu zvakasiyana. Ivhavha inonyanya kushandiswa "kuvhura" kana "kuvhara", asi yakagadzirirwa neplunger yakakosha kana yakakosha collar, iyo inogona kushandiswawo kugadzirisa kuyerera.

Nzvimbo yeshinda pahunde yevharuvhu

1) Yekumusoro shinda stem stop valve: tambo yehunde yevharuvhu yekumisa iri kunze kwemuviri wevharuvhu. Kubatsira kwaro ndekwekuti tsinde yevharuvhu haina kuderedzwa nepakati uye iri nyore kuisa mafuta. Ichi chimiro chinoshandiswa zvakanyanya.

2) Lower threaded stem stop valve: tambo yehunde yevharuvhu yekumisa iri mumutumbi wevharuvhu. Tambo yehunde yevhavha ine chimiro ichi inobatana zvakananga nepakati, iyo iri nyore kunyungudutswa uye haigone kuomeswa. Ichi chimiro chinoshandiswa munzvimbo dzine diki caliber uye yakaderera tembiricha.

Kune akawanda epamba vanogadzira mavharuvhu ekumisa, uye mazhinji ekubatanidza saizi haana yunifomu. Iyo inonyanya kupatsanurwa muzvikamu zvinotevera: chikamu chese chakavakirwa pakureba kwemavharuvhu epasi (JB / t2203-1999). Parizvino, vazhinji vanogadzira mavharuvhu ekumira vakagadzirwa uye vanogadzirwa zvinoenderana nechiyero ichi. Nekudaro, chiyero ichi hachina kukwana uye zvakatemwa hazvina kukwana. Iyo yakakwira zita dhayamita yeimwe gedhi yekumisa vharafu ndeyeDN1200, uye iyo yakakura yezita dhayamita yekaviri gedhi rekumisa vharafu iDN1500. Zvinoenderana nezvinotsanangurwa zvevharuvhu yekumisa inogadzirwa nemugadziri uye ruzivo rwuripo, diki dhayamita rezita rekona yekumisa vharafu iDN15, uye dhayamita rezita reZ-mhando yekumira vharafu iDN2000. Maererano netsvagiridzo, saizi yekubatanidza yemugadziri wega wega haina yunifomu. Kuti tive nechiyero chakabatana uye chirevo chimwe chete chinogona kuchinjana kana vashandisi vakasarudza nekuisa, zvinokurudzirwa kuti China General Machinery Research Institute idzokorore kureba kwechimiro chevhavha yekumisa (JB / t2203-1999). Zvinokurudzirwa kuti dhizaini yekugadzira uye mushandisi sarudza zvinoenderana neyakajairwa, uye iyo yekumisa valve mugadziri achagadzira uye kugadzira zvinoenderana nechiyero.

Maererano nekushandiswa

Iyo fluorine lined stop valve inoshanda kune aqua regia, sulfuric acid, hydrochloric acid, hydrofluoric acid uye akasiyana organic acids, yakasimba acids uye yakasimba oxidizing maajenti eakasiyana mazinga pa - 50 ~ 150 ℃, uye inoshandawo kune yakasimba alkali organic solvents ye. kwakasiyana-siyana uye mamwe magasi anoparadza uye mvura yepakati mapaipi

National standard globe valve ndiyo inonyanya kushandiswa chigadzirwa muglobe valve series. API American Standard globe valve American Standard globe valve inoshandisa ANSI uye API zviyero. Iyo yekuvharisa pamusoro pevharuvhu disc uye chigaro chevharuvhu yakagadzirwa neStellite cobalt yakavakirwa yakaoma alloy nekuoma kwakasiyana. Iyo ine chisimbiso chakavimbika, kuomarara kwakanyanya, kupfeka kuramba, kupisa kwekushisa kwakanyanya, corrosion resistance, good scratch resistance uye hupenyu hurefu hwebasa.

Tsono vharafu idiki-dhayamita chiridzwa vharafu, iyo inobata basa rekuvhura nekuvhara uye nekuyerera kuyerera kwekutonga mune chiridzwa chekuyera pombi system, kunyanya kusanganisira magetsi chiteshi chiridzwa nhepfenyuro, oilfield special series, American standard series, nezvimwe.

Kudzikira tembiricha yekumisa vharafu kazhinji inoreva vharafu ine tembiricha yekushanda yakaderera pane - 110 ℃, iyo inoshandiswa zvakanyanya mune liquefied gasi rechisikigo, liquefied petroleum gasi uye mamwe maindasitiri ekupisa. Kubva 2008, kumisa mavharuvhu ane tembiricha inoshanda kusvika - 196 ℃ inogona kugadzirwa. Zvikamu zvese zvakagadzirirwa ne nitrogen yemvura pane tembiricha yakaderera kudzivirira zvachose kuvhara deformation uye kuvuza panguva yekushandiswa.

Plunger valve inonziwo plunger stop valve. Nzvimbo yayo yekuisa chisimbiso inotora radial sealing chimiro. Mhete mbiri dzekuvharisa dzakaiswa maoko pamusoro pepulinger yakakwenenzverwa yekumisikidza mhete dzekuisa chisimbiso dzakatenderedza plunger kuburikidza nemutoro wakaiswa pabhoneti nemabhaudhi ekubatanidza emuviri wevharuvhu uye bhoneti kuti uwane chisimbiso.

Ivhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavha,uye yekunze inopisa sosi inoshandiswa kupisa kunze kwevharuvhu,iyo inogona kunyatso dzivirira kuparara kwekushisa kwepakati kana ichipfuura nepavharuvhu uye kuve nechokwadi chekushisa kwepakati.

Forged steel globe mavharuvhu akagadzirwa uye anogadzirwa zvinoenderana neAPI 602 yakajairwa. Mafomu matatu ekugadzira mabhoneti anopihwa: Bolted bonnet, Welded Bonnet uye pressure self tightening sealing bonnet. Vashandisi vanogona kusarudza mafomu akasiyana zvichienderana nezvavanoda, uye kupa RF flange, NPT shinda uye SW Welded Bonnet.

Iyo okisijeni yakakosha yekumisa vharafu inogadzirwa nesilicon ndarira kana simbi isina tsvina ine yakanakisa zvinhu, iyo ine zvakanakira yeakakwira mechanic simba, kupfeka kuramba uye kuchengetedzwa kwakanaka. Kana ichishandiswa mupombi yeokisijeni, ine yakanyanya kuputika-chiratidzo uye inodzoreredza moto uye inobvisa zvinhu zvisina kuchengeteka papombi yeokisijeni. Inoshandiswa zvakanyanya mupombi network yesimbi, metallurgy, petrochemical, makemikari uye mamwe mapurojekiti anotora okisijeni. Pamusoro pemabasa emavharuvhu akajairika, anewo maitiro ayo. Matanho akasimba ekurambidza mafuta anozotorwa panguva yekugadzira, uye zvikamu zvese zvichabviswa mafuta asati aiswa.

Iyo bellow stop valve yakagadzirwa neyakaumbwa simbi isina tsvina. Iwo mabhero haana mhosva mushure me10000 kudzokorora bvunzo, uye kuita kwekuisa chisimbiso kwakavimbika. Inokodzera maindasitiri uye migodhi ine zvinopisa, zvinoputika, zvine muchetura uye zvinokuvadza midhiya, uye inogona kunyatso kudzivirira kubuda kwevhavha.

Chigadzirwa kuenzanisa

Kuenzanisa pakati pebhero stop valve uye common stop valve

1. Dhizaini yekuisa chisimbiso kaviri (mabhero + kurongedza) kana mabhero akatadza, iyo stem kurongedza inodzivirirawo kudonha uye kusangana nepasi rose sealing standards.

2. Hapana kurasikirwa kwemvura, kuderedza kurasikirwa kwesimba uye kugadzirisa kuchengetedzwa kwemidziyo yemiti.

3. Hupenyu hurefu hwebasa, kuderedza nguva dzekugadzirisa uye kuderedza mari yekushandisa.

4. Mabhero akasimba uye akasimba ekuisa chisimbiso dhizaini inovimbisa zero kudonha kwehunde yevharuvhu uye inopa kuchengetedza kwemahara.

5. PTFE yakapfava sealing material inotambirwa chigaro chegasi yepakati pevharuvhu kuti ivandudze kushanda kwekuvhara kwevhavha.

6. Chigaro chevharuvhu chine kupisa kwakanyanya kwekudzivirira ≤ 425 ℃ inotora conical yakaoma chisimbiso. Wana kusimba kwemhepo uye zero leakage.

Nekuramba kuchikwira kwemutengo wevashandi, mabhizinesi mazhinji anotarisira kuderedza simba revashandi. Iine mabhero ekumisa vharafu, vashandi vanogona kushandura zviri nyore. Zvigadzirwa zvine hupenyu hurefu hwesevhisi uye kuita zvirinani kuvhara zvine chikonzero chekutenda kuti tarisiro dzayo dzichawanda uye dzakafara.

Zvinoenderana nenzvimbo yechiteshi, inogona kukamurwa kuita yakatwasuka mhando uye yekurudyi kona mhando.

kushanda musimboti

Nheyo yekushanda yevhavha yekumisa ndeyekuita kuti vheji isina kuvharwa kana kuvharwa nekutenderedza valve. Ivhavha yegedhi yakareruka uye diki muhukuru, inogona kugadzirwa muhupamhi yakakura, yakavimbika mukusunga chisimbiso, iri nyore mukugadzirisa, yakanakira mukugadzirisa, uye nzvimbo yekuisa chisimbiso uye spherical surface inogara yakavharwa, iyo isiri nyore kunyungudutswa nepakati. Inoshandiswa zvakanyanya mumaindasitiri akasiyana.

A. Kuvhura nzira

1 munzvimbo yakavharwa, muviri wevharuvhu unodzvanywa kurwisa chigaro chevharuvhu nekumanikidza kwemagetsi kwehunde yevhavha.

2 kana vhiri remaoko richitenderedzwa counterclockwise, tsvimbo yevharuvhu inofamba ichienda kumashure, uye ndege yeakona pazasi ichaita kuti bhora rirege kubva pachigaro chevharuvhu.

3 mudonzvo wevharuvhu unoramba uchisimudza uye uchipindirana nepini yekutungamira mu spiral groove yetsvimbo yevharuvhu kuita kuti bhora ritenderere risingakweshe.

4 kusvikira yasvika panzvimbo yakazaruka zvakakwana, tsvimbo yevhavha inosimudzwa kusvika panzvimbo inogumira, uye bhora rinotenderera kune nzvimbo yakazaruka zvakakwana.

B. Kuvhara nzira

1 kana vharuvhu yakavharwa, tenderedza vhiri reruoko newachi, tsinde yevharuvhu inotanga kudonha uye bhora rinotanga kutenderera kure nechigaro chevharuvhu.

2. Ramba uchitenderedza handwheel, uye tsinde yevharuvhu iri pasi pekuita kwepini yekutungamira yakaiswa muspiral groove pahandwheel, kuitira kuti tsinde yevharuvhu negondohwe zvitenderere 90 ° panguva imwe chete.

3 kana muviri wevharuvhu wava kuda kuvhara, watenderera 90 ° pasina kubata chigaro chevharuvhu.

4 panguva shoma dzekupedzisira kutenderedzwa kwevhiri remaoko, ndege yeakona iri pazasi pehunde yevharuvhu inochekesa bhora kuti riite kudzvanya pachigaro chevharuvhu kuti iwane chisimbiso chakazara.

Mamiriro ezvinhu evhavha yekumira:

1. Hapana kupokana panguva yekuvhura nekuvhara. Iri basa rinogadzirisa zvachose dambudziko rekuti kuiswa chisimbiso kwemavharuvhu echinyakare kunokanganisa nekukweshana pakati penzvimbo dzekuisa chisimbiso.

2. Pamusoro akaiswa chimiro. Iyo valve yakaiswa papombi inogona kuongororwa zvakananga uye kuchengetedzwa online, iyo inogona kunyatso kudzikisa kuvharika kwechishandiso uye kuderedza mutengo.

3. Single seat design. Dambudziko rekuti svikiro mukamuri yevhavha rinokanganisa kushandiswa kwekuchengetedza nekuda kwekusagadzikana kwekumanikidza kusimuka kunobviswa.

4. Yakaderera torque dhizaini. Irovhavha hunde ine yakakosha dhizaini dhizaini inogona kuvhurwa nyore uye kuvharwa nekabato kadiki chete.

5. Wedge seal chimiro. Ivhavha inonamwa nekutsikirira bhora wedge pachigaro chevharuvhu nesimba remagetsi rinopihwa nevhavha hunde, kuitira kuti chisimbiso chevharuvhu chisakanganiswa nekushandurwa kwepipeline pressure musiyano, uye kuita chisimbiso kunovimbiswa nekuvimbika pasi pe. mamiriro ekushanda akasiyana.

6. Self yekuchenesa chimiro chekuisa chisimbiso chepamusoro. Kana bhora richirerekera kure nechigaro chevharuvhu, mvura iri mupombi inopfuura nepanzvimbo yekuvharisa yebhora pa360 ° zvakaenzana, izvo zvisingangobvisi kukweshwa kwenzvimbo kwechigaro chevharuvhu nemvura inomhanya-mhanya, asi zvakare inosuka. kuunganidza pamusoro pechisimbiso chepamusoro kuti uwane chinangwa chekuzvichenesa.

7. Muviri wevharuvhu uye bhoneti ine dhayamita yevharuvhu iri pazasi peDN50 mafekitari, uye muviri wevharuvhu nebhoneti zvine dhayamita revharuvhu pamusoro peDN65 simbi yekukandira.

8. Mafomu ekubatanidza evhavha muviri nebhoneti akasiyana, clamp pin shaft connection, flange gasket connection uye self sealing thread connection.

9. Zvisimbiso zvekuvhara kwechigaro chevhavha uye diski yevharuvhu yakagadzirwa neplasma spray welding kana surfacing cobalt chromium tungsten hard alloy, nekuoma kwakanyanya, kusapfeka, kusagadzikana kweabrasion uye hupenyu hurefu hwebasa.

10. Mudonzvo wevharuvhu wakagadzirwa nesimbi ine nitrided. Iyo nitrided valve tsvimbo ine yakakwirira pamusoro kuoma, kupfeka kuramba, abrasion kuramba, corrosion kuramba uye hupenyu hurefu hwebasa.