Chisimbiso Chesimbi Chinoputika kana Elastomer: Maitiro Ekusarudza

Nhanganyaya

Kusarudza pakati pesimbi ine bellows seal nechisimbiso che elastomer bellows kunokanganisa zvakawanda kupfuura kukwana kana mutengo: kunosarudza kuti pombi inobata sei kupisa, kurwiswa kwemakemikari, kufamba kweshaft, uye nguva refu yebasa. Chinyorwa chino chinotsanangura mutsauko uripo pakati pemagadzirirwo maviri aya, tichitarisa kuti chisimbiso chesimbi chine bellows mechanical chinopa mabhenefiti akajeka nekubvisa mapoinzi ekutadza ane chekuita ne elastomer. Uchadzidza mamiriro ekushanda anotsigira sarudzo yega yega, kuti ndeapi magadzirirwo aunofanira kutarisira, uye maitiro ekuongorora kuvimbika, zvinodiwa pakugadzirisa, uye mutengo wehupenyu usati wasarudza.

Maitiro Ekuongorora Chisimbiso Chesimbi Chinoputika

Kusarudza tekinoroji chaiyo yekuvhara isarudzo yakakosha yeinjiniya inosarudza kuvimbika, kuchengetedzeka, uye nguva dzekugadzirisa michina inotenderera mumaindasitiri. Pakati pesarudzo iyi pane sarudzo pakati pezvisimbiso zvechinyakare zve elastomer nechisimbiso chesimbi chesimbiKunyange hazvo ma elastomer achishandiswa zvakakwana mumashandisirwo akajairwa, nzvimbo dzakaoma dzemaindasitiri dzinoda mhinduro yakasimba.

Chisimbiso chesimbi chinotsiva chinhu chinoshanduka chechipiri chinovhara—kazhinji chinova elastomer O-ring—nechinhu chinogara chichichinjika uye chinochinjika chesimbi. Kuchinja uku kukuru mukugadzira kunobvisa kushaya simba kunokonzerwa nekuora kwe elastomer, zvichipa mukana wakasiyana wekushandisa mune mamwe mamiriro ekubata mvura.

Sei kusarudzwa kuchikanganisa kuvimbika uye mutengo wehupenyu hwese

Kubatana kuripo pakatisarudzo yechisimbiso chemakanikauye kuvimbika kwenguva refu kwemiti hakugoni kutaurwa zvakanyanya. Mumamiriro ezvinhu anoda kushanda nesimba, kutadza kushanda kwezvisimbiso zvemakanika kunoita kuti pombi ishande neanenge 70% yenguva yese yekusashanda. Kuvandudzwa kuita dhizaini yesimbi ine simba muzvishandiso zvine simba zvinogona kuchinja zvakanyanya Mean Time Between Failures (MTBF).

Semuenzaniso, mapombi e centrifugal anoshanda muzvishandiso zve refinery zvinopisa zvakanyanya anowanzoona pusher seal MTBF ichimira pamwedzi 12 kusvika 18 nekuda kwekuoma kwe elastomer. Nekuchinja kuenda kune metal bellows mechanical seal yakatarwa zvakakodzera, zvivakwa zvinowanzowedzera MTBF kusvika kumwedzi inopfuura 36 kusvika 60. Kunyangwe mari yekutanga yekushandisa yesimbi bellows unit yakakwira, mutengo wehupenyu hwese (LCC) unoderera zvakanyanya kana uchitarisa mukubvisa kudzimwa kwemvura kusina kurongwa, kudzikiswa kwebasa rekugadzirisa, uye hapana chinodiwa chekutsiva shaft sleeve.

Maitiro ekushanda kwemamiriro ezvinhu anoumba sarudzo yechisimbiso

Maparamita ekushanda—kunyanya tembiricha, hunyanzvi hwemakemikari, uye kusimba kwemvura—ndizvo zvinonyanya kukonzera kusarudzwa kwechisimbiso. Standard fluoroelastomers (FKM) kana perfluoroelastomers (FFKM) zvinowanzoratidza kuora kwekupisa kana kubuda kana tembiricha dzinoshanda dzichipfuura 200°C kusvika 260°C (392°F kusvika 500°F).

Kusiyana neizvi, simbi dzakasungirirwa mumucheto dzakagadzirwa nesimbi dzinoshanda zvakanaka dzinogona kutsungirira tembiricha dzinogara dzichishandiswa dzinopfuura 400°C (750°F) pasina kurasikirwa nehunhu hwechinhu kana kumanikidzwa kwechitubu. Uyezve, mamiriro ekushanda kune imwe nzira anotonga sarudzo dzakafanana; mashandisirwo e cryogenic anoshanda kusvika -75°C (-103°F) anoita kuti ma elastomers apwanyike uye aputsike, zvichiita kuti simbi dzive ndiyo chete sarudzo yeinjiniya inoshanda yekusimudza zvinhu kumeso kwakasimba.

Zvisimbiso zveMechanical zveSimbi vs Pusher

Kuti vagadzire ruzivo rwakadzama, mainjiniya vanofanira kunzwisisa mutsauko wemakanika pakati pezvisimbiso zvekusundidzira nezvisimbiso zvesimbi zvisina kusundidzira. Chisimbiso chekusundidzira chinoshandisa elastomer yechipiri inoshanduka inofanira kufamba, kana "kusundidzira," pamwe chete neshaft yepombi kana sleeve kuti itsigire kupera kwechisimbiso uye kuwedzera kwekupisa. Chisimbiso chesimbi chine dhizaini isina kusundidzira.

Muchimiro chisina pusher, bellows unit pachayo inovharwa ne statically ku shaft kana sleeve, kazhinji kuburikidza ne static O-ring kana graphite wedge. Kufamba kwese kwe axial kunodiwa kuti urambe uchitarisana kumeso kunotorwa nekupfava kwe metallic convolutions, zvichibvisa zvachose kudiwa kwe elastomer kuti itsvedzerere dynamically.

Maitiro ekugadzira dhizaini yega yega anogonesa kuchinjika uye kurodha zvinhu kumeso

Magadzirirwo epusher anoshandisa maspring ecoil imwe chete kana akawanda kuti ape simba rekuvhara rinodiwa pazviso zvechisimbiso. Sezvo dynamic O-ring ichitsvedza kuti irambe ichitakura, tunhu tunogona kuungana pashaft, zvichiita kuti elastomer irembedzeke. Kurembedza uku kunotungamira pakuparadzana kwechiso uye kubuda kwemvura ipapo ipapo. Uyezve, kufamba-famba kwenguva refu kwedynamic O-ring pamusoro pesimbi kunowanzo kukonzera kuvhunduka kwakanyanya kweshaft.

Chisimbiso chesimbi chinovhara simbi chinogadzirisa matambudziko aya nekupa kumeso kwakafanana, 360-degree zvakananga kuburikidza nesimbi inotenderera. Nekuti hapana kutsvedza kunochinja kwe elastomer yechipiri, shaft fretting inobviswa zvachose. Kupararira kwakafanana kwesimba rechitubu kunoderedzawo kukanganiswa kwechiso munzvimbo, zvichichengetedza mukaha wakatsetseka wekuvhara pasi pekumanikidzwa kunochinja-chinja.

Ndeipi miganhu yekushanda inonyanya kukosha

Kunzwisisa miganhu chaiyo yekushanda kwemagadzirirwo ese ari maviri kwakakosha pakudzivirira kutadza kushanda zvakanaka kwepombi. Kusviba uye kuwanda kwezvikamu zvinhu zvinorema zvakanyanya. Zvitubu zvepusher seal zvinogona kuvharika zvakanyanya kana viscosity yemvura ichidarika 1,500 cSt kana kana zvinhu zvakasungirirwa zvakaungana muhomwe dzezvitubu.

Nekuti simbi dzine tsinga hadzina mapurasitiki akamanikana, dzinobata kupenya kusvika ku3,000 cSt dzisati dzada kugadziriswa kwakakosha. Kana dzakagadzirirwa setsinga dzinotenderera, simba re centrifugal rinokanda zvidimbu kubva pamadziro, zvichipa mhedzisiro yekuzvichenesa iyo pusher seals isingagoni kutevedzera.

Zvinodiwa Zvakakosha Pakuenzanisa Chisimbiso

Kuenzanisa mhando dzezvisimbiso kunoda kuongororwa kwakarongeka kwezviyero zvekushanda, kukanganisa kwehupfumi, uye mitemo yekutevedzera nharaunda. Mapoka einjiniya anofanira kuyera kugona kwemakanika nekukurumidza zvichienderana nekushanda kwenguva refu kwemidziyo.

Kunyange zvazvo simbi dzinoshanda zvakanaka mumamiriro ezvinhu akaoma, kusarudzwa kwadzo kunofanirwa kusimbiswa kuburikidza nekufananidza kwakasimba kwezvinodiwa, kuve nechokwadi chekuti tekinoroji inoenderana nezvinodiwa zvemaitiro uyenzira dzekuchengetedza zvirimwa.

Maitiro ekuenzanisa zvinhu zvinoita kuti munhu ashande

Kuenzanisa mashandiro kunoenderana zvakanyanya nemiganhu yekumanikidzwa uye kumhanya kweshaft. Zvivharo zvepusher, kunyanya izvo zvine magadzirirwo akaenzana, zvine hunyanzvi hwepamusoro pakubata nekumanikidzwa kwakanyanya, zvinowanzo ongororwa munzvimbo dzinopfuura 100 bar (1,450 psi). Mheto dzesimbi, kunyange zvazvo dzichichinjika zvakanyanya, dzinosangana nemiganhu yechimiro maererano nekumanikidzwa.

Mvuro dzesimbi dzakagadzirwa zvakajairika dzinowanzo ganhurira kumanikidzwa kwemabhawa makumi maviri (290 psi). Mvuro dzesimbi dzakasungirirwa pamucheto dzinoshanda zvakanaka dzinogona kuwedzera muganho uyu kusvika kumabhawa makumi matanhatu nemapfumbamwe (1,000 psi), asi dzinoramba dzichinzwa kumanikidzwa kupfuura zvisimbiso zvinorema. Pakuenzanisa kumhanya kweshaft, mvuro dzesimbi dzemhando yepamusoro dzinogona kushanda zvakanaka pakumhanya kwepamusoro kusvika ku25 m/s, zvichiita kuti dzikwikwidzane zvakanyanya nehukuru hwepombi yeAPI yakajairwa.

Ndezvipi zvinhu zvinofanirwa kuongororwa pamutengo uye mararamiro ehupenyu

Kuongorora mutengo kunofanira kuchinja kubva pamaonero eCapEx-only kuenda kumuenzaniso wemutengo wehuwandu hwemari yekuva muridzi (TCO). Mutengo wekutanga wekutenga wesimbi ine simbi yakasungirirwa pamucheto unowanzo kuve wakakwira ne2.0x kusvika 3.0x kupfuura chisimbiso che elastomer pusher chakajairwa nekuda kwesimbi yakaoma uye welding chaiyo inodiwa.

Zvisinei, zvinhu zvinoita kuti zvinhu zvifambe zvakanaka zvinokurumidza kuderedza mutengo wekutanga uyu. Nekubvisa kudiwa kwekutsiva ma fretted pump shafts kana ma protective sleeves—anogona kudhura mari inosvika $2,000 pakugadzirisa pa API pumps hombe—uye nekuwedzera MTBF nemakore akati wandei, kudzoka kwemari (ROI) yekuvandudza simbi yesimbi inowanzoonekwa mukati memwedzi gumi nemiviri kusvika gumi nemisere yekutanga yekushanda.

Kana zvinodiwa pakutevedzera mitemo zvichikanganisa kusarudzwa

Mitemo yezvakatipoteredza inoita basa guru mukusarudza zvisimbiso, kunyanya muzvikamu zvemakemikari nepetrochemicalZvivako zvinofanirwa kutevedzera mitemo yakasimba yekubvisa hutsi, senge EPA Method 21, iyo inowanzo raira kuti kubuda kwemidziyo kurambe kuri pasi pe500 parts per million (ppm) ye volatile organic compounds (VOCs).

Zvisimbiso zvesimbi zvinofarirwa zvikuru mumatanho ekutevedzera mitemo nekuti zvinobvisa O-ring inoshanduka, inova nzvimbo inowanzo kundikana yekubuda kwemhepo inobuda. Mukushandiswa kwezvishandiso zvekuchenesa zvinotongwa nemaitiro eAPI 682, zvisimbiso zvemhando B (simbi zvinobuda) zvinotsanangurwa zvakajeka kune masevhisi emhando yepamusoro eChikamu 2 neChikamu 3, zvichiona kuti zvinotevedzera mitemo yezvakatipoteredza pamwe nemitemo yekuchengetedza yepasi rose.

Gwaro Rinoshanda reKusarudza uye Kutsvaga Zvinhu

Kuchinja kubva pakusarudza zvinhu zvepfungwa kuenda pakutsvaga zvinhu zvinobudirira kunoda nzira yakarongeka. Kutenga chisimbiso chesimbi chinovhara simbi hakusi kutengeserana kwezvinhu; kunoda kutaurirana kwakanyatsojeka pakati pechikwata chekuvimbika kwefekitori nevashandi vefekitori.mugadziri wechisimbiso.

Maitiro ekuongorora akasimba uye ekukodzera anovimbisa kuti chisimbiso chakapihwa chichaita zvinoenderana neMTBF yachakatarwa, zvichidzivirira kushandiswa zvisirizvo kunodhura.

Ndeipi nzira yekuongorora inofanira kushandiswa

Maitiro ekuongorora anofanira kutanga nekuongorora kwakazara kwemvura uye masisitimu. Mainjiniya anofanirwa kunyora pasi kuti makemikari acho akagadzirwa sei, kusanganisira zvinhu zvidiki, kuti vaone kuti simbi inoenderana sei. Kupomba mvura ine huwandu hwakafanana hwemachloride kunogona kukonzera kuputika kwengura musimbi isingatsvedzeri ye300-series.

Tevere, envelopu yekushandisa inofanira kutsanangurwa. Izvi zvinosanganisira kuronga tembiricha shoma neyakanyanya kushanda, kumanikidzwa kunoenderera mberi uye kwekukurumidza, uye huwandu hwezvinhu zvakasimba zvakamiswa. Mushure mekunge envelopu iyi yagadzirwa chete ndipo panofanira kutariswa mhando yekuvaka kwebellows—kusarudza pakati pebellows dzakagadzirwa dzekushandisa zvisina basa zvakanyanya kana bellows dzakasungirirwa pamucheto kuti dzishande zvakanyanya.

Ndezvipi zvinhu zvinowanzo shaikwa

Zvinhu zvakawanda zvakakosha zvinogara zvichiregeredzwa panguva yekutenga, zvichikonzera kuti munhu ashaye simba nekukurumidza. Chimwe chezvinhu zvakadaro ihukobvu hweplate yebellows. Maplate akajairwa ane welded edge anotangira pa 0.10 mm kusvika 0.15 mm muukobvu. Kutsanangura plate yakakora (semuenzaniso, 0.20 mm) kunowedzera kumanikidzwa asi kunoderedza zvakanyanya kuchinjika kweaxial, zvichida kuongororwa kwakanyatsojeka kwemasimba ekusimudza zvinhu pachiso.

Kusarudza alloy chimwe chinhu chisingawanzoitiki. Kusashandisa AM350 kunogona kuderedza mari yekushandisa pakutanga, asi kukwidziridza kuAlloy C-276 kana Inconel 718 kunodiwa kana paine ngura dzakakomba kana tembiricha dzinopfuura 315°C. Kutadza kutsanangura simbi chaiyo yemakemikari emvura ndicho chikonzero chikuru chekuputika kwebellows nekukurumidza.

Maitiro ekuita kuti vatengesi nevatengesi vakwanise

Kuwana mutengesi anokodzera simbi dzinopinza kunoda kuongorora kugona kwavo kugadzira uye kuvimbisa mhando. Vatengi vanofanira kukumbira ISO 9001 certification uye kukumbira magwaro ekuongorora simbi mukati meimba. Nekuti maitiro ekubatanidza simbi anosanganisira zviuru zve micro-welds, mutengesi anofanira kuita bvunzo dzakasimba dzekudonhedza mvura.

Vatengesi vanotenderwa vanofanira kushandisa helium mass spectrometry leak testing, vachivimbisa kuti leak rate iri pasi pe1×10^-7 atm cc/sec mu bellow assembly. Uyezve, vatengi vanofanira kutarisira mafambiro akasiyana e supply chain; nepo pusher seals dzinowanzo kuve zvinhu zvekutengesa zvisiri pasherufu (COTS), custom edge-welded bellows dzinowanzoda Minimum Order Quantity (MOQ) kana nguva yekutakura yemavhiki matanhatu kusvika masere. Zvitupa zvezvinhu zvinoteverwa (se EN 10204 3.1) zvinofanirwa kunge zviri chinodiwa chisingakurukurwe kuti zvionekwe kuti alloy ndeyechokwadi.

Kana Zvisimbiso zveMetal Bellows Zviri Zvakanakisisa Kukwana

Kuona kuti chisimbiso chesimbi chinokwana sei chinovhara simbi chinoda kuenderana nesimba retekinoroji iyi nenzira dzakasiyana dzekutadza kushanda zvakanaka mufekitori. Kana zvikashandiswa nemazvo, zvisimbiso izvi zvinoshanda semhinduro chaiyo kumatambudziko enguva refu ekuvimbika kwepombi.

Kunyange zvazvo zvisiri zvekutsiva zvese zvinosundidzira, kushandiswa kwazvo munzvimbo dzakanangana, dzine kushushikana kwakanyanya kunoita kuti pave nekugadzikana kusingaenzaniswi pakushanda.

Ndezvipi zvinoshandiswa zvinotsigira simbi dzinoshandisa maburi

Zvakanyatsojekamafomu emaindasitiriZvinowanzo farira dhizaini yesimbi ine bellows. Kugadziriswa kwemahydrocarbon anodziya zvakanyanya, senge hot asphalt kana heavy vacuum gas oil (HVGO), kunoda zvisimbiso zvisingabatike kana kupwanya. Mapombi emafuta anopisa (mafuta anopisa) anoshanda zvakanaka pamusoro pe200°C anovimba chete nesimbi ine bellows kudzivirira kutadza kukuru kunokonzerwa nekunyunguduka kwe elastomer.

Pamusoro pezvo, mashandisirwo anosanganisira zvinhu zvakasimba zvinosungirirwa zvinosvika 5% nehuremu ndiwo anonyanya kukosha. Munzvimbo idzi, maO-rings anoshanduka emapusher seals anoparadzwa nekukurumidza nekuisa ma "particles", uye ma "coil springs" awo anozadzwa nezvinhu zvakasimba. Chisimbiso chesimbi chinotenderera chinoburitsa zvinhu zvakasimba izvi pakati nepakati, zvichiita kuti chisimbiso chisarembera zvakanaka uye chinodzivirira kuti chisarembera.

Ndeapi mazano anobatsira zvikwata kusarudza nechivimbo

Kuti vasarudze nechivimbo, zvikwata zveinjiniya zvinofanirwa kushandisa matrix yesarudzo yakajairika. Kana application ikapfuura 200°C, ichishanda pasi pe -40°C, ine zvinonyungudutsa zvine simba zvinozvimba ma elastomers, kana kuti ine dambudziko rekugara kwenguva refu re shaft, chisimbiso chesimbi chemechanical bellows chinofanira kunge chiri icho chinotsanangurwa.

Mapoka anofanirwa kukoshesa zviyero zvekuvimbika kwenguva refu kupfuura bhajeti rekutenga. Kugadzirisa marongero eAPI 682 Type B emidziyo yakakodzera panzvimbo inorerutsa zvinhu zviri muchitoro uye kunoita kuti kana mamiriro ezvinhu akaoma amuka, tekinoroji yekuvhara zvinhu inenge yatogadzirwa kuti ikwanise kutsungirira kushushikana kwekupisa uye kwemakanika, zvichizochengetedza kugadzirwa kwemiti nevashandi.

Zvinhu Zvinokosha Zvaunofanira Kuziva

• Mhedziso dzakakosha uye chikonzero chechisimbiso chesimbi chepasi pesimbi
• Magadzirirwo, kutevedzera mitemo, uye kuongororwa kwenjodzi zvinofanirwa kuongororwa usati waita chibvumirano
• Matanho anotevera anoshanda uye mazano anogona kushandiswa nevaverengi ipapo ipapo

Mibvunzo Inowanzo bvunzwa

Ndirini pandinofanira kusarudza chisimbiso chesimbi chinosunga simbi pachinzvimbo chechisimbiso chinosunga simbi ...

Sarudza simbi dzinoshandiswa pakupisa kwakanyanya, makemikari anokasharara, cryogenic duty, kana kana shaft fretting uye O-ring yakamiswa zviri njodzi. Elastomer bellows dzinokwana mabasa akachena uye anodziya zviri pakati nepakati.

Ndeipi tembiricha inoita kuti zvisimbiso zvesimbi zvine simba zvive sarudzo iri nani?

Mabhero esimbi anowanzo shandiswa kupfuura 200°C uye anogona kubata 400°C+ zvichienderana nealloy. Akakodzerawo tembiricha yakaderera zvikuru apo ma elastomers anogona kupwanyika.

Sei zvisimbiso zvesimbi zvinosimbisa kuvimbika kwepombi?

Vanoshandisa dhizaini isingasundidzi, saka hapana dynamic elastomer inotsvedza pashaft. Izvi zvinobatsira kudzivirira kurembera, kuderedza njodzi yekubuda kwemvura, uye kubvisa kuputika kweshaft mukushanda kwakaoma.

Ko Victor Seals inogona kupa zvisimbiso zvesimbi zvinotsiva pombi dzeOEM here?

Ehe. Victor Seals inopa zvisimbiso zvemakanika zvinoenderana neOEM uye zvinotsiva zvemhando dzakadai seIMO, Alfa Laval, Grundfos, APV, Flygt, Fristam, Lowara, naAllweiler.

Zvivharo zvesimbi zvine simba zviri nani here pamvura dzakasimba kana dzakasviba?

Kazhinji hongu. Magadzirirwo esimbi anovhara simbi anoita kuti ivhare zvakanyanya mune mamwe ma pusher seals uye anogona kubata kupenya kwakanyanya, zvichiita kuti zvishande pamabasa akaoma ekugadzira pombi.