Nhanganyaya
Kusarudza chinhu chekusimbisa ngura muchina hakusi kwekutsvaga imwe sarudzo "yakanakisisa" pasi rose, asi kufananidza zviso zvechisimbiso, ma elastomers, uye zvikamu zvesimbi nemvura, tembiricha, kumanikidzwa, uye mamiriro ekushanda. Kusanganiswa kusina kunaka kunogona kukurumidzisa kupera, kukonzera kurwiswa kwemakemikari, uye kupfupisa hupenyu hwechisimbiso, zvichikonzera kudonha kwemvura, nguva yekushanda, uye njodzi dzekuchengetedza. Chinyorwa chino chinotsanangura kuti sarudzo dzezvinhu zvakajairika senge silicon carbide, tungsten carbide, Hastelloy, PTFE, uye ma specialty elastomers anoshanda sei mukugadzira ngura, uye maitiro ekuzviongorora zvichibva pa process chemistry kuti ugone kuona chivakwa chechisimbiso chakakodzera iwe.
Sei Kusarudza Zvinhu Zvakakosha Pakuisa Zvisimbiso Zvisingapindi Mhuka
Kutsanangura achisimbiso chemuchina chinodzivirira ngurandeimwe yesarudzo dzakakosha dzeinjiniya mukugadzirisa masisitimu emvura.Zvisimbiso zvemakanika zvinoshanda sechipingamupinyi chikurupakati pemvura inoyerera nesimba uye nharaunda yekunze, kudzivirira kuburitswa kwemhepo ine njodzi uye kudzivirira zvikamu zvepombi yemukati. Pakugadzirisa zvinhu zvinoparadza zvakanyanya—zvakadai seasidhi yakasimba, caustic alkalis, kana zvinonyungudutsa simba—muganhu wekukanganisa hausipo zvachose. Kuora kwezvinhu kunogona kuitika nekukurumidza, zvichikonzera kurasikirwa nemidziyo, njodzi dzezvakatipoteredza, uye kukuvara kwakanyanya kwemidziyo.
Maitiro ekusarudza anoda kunzwisisa kwakazara kwesimbi, tribology, uye elastomer chemistry. Chisimbiso chemuchina hachisi chinhu chimwe chete; iboka rezviso zvinotenderera uye zvisina kumira, zvinhu zvechipiri zvekuvhara, uye hardware yesimbi. Chimwe nechimwe chezvinhu izvi chinofanira kutsungirira mamiriro emakemikari chakazvimiririra uku chichichengetedza kushivirira kwakakodzera kwemuchina pasi pekumanikidzwa kwakasiyana-siyana uye tembiricha. Kukundikana kufananidza zvinhu zvakakodzera nemakemikari chaiwo emvura kunoderedza zvakanyanya Mean Time Between Failures (MTBF) uye kunowedzera njodzi dzekushanda.
Kemikari yemaitiro, njodzi yekubuda kwemvura, uye kukanganisa kwekuzorora
Kemikari yemaitiro ndiyo inotungamira mwero uye mashandiro ekuora kwezvinhu. Mvura dzemumaindasitiri dzinogona kuratidza huwandu hwakanyanya hwepH, kubva pakuva neacid yakawanda (pH < 1) kusvika kune alkaline yakawanda (pH > 13), imwe neimwe ichirwisa zvinhu zvakasiyana. Semuenzaniso, oxidizing acids senge nitric acid inogona kusunungura mamwe masimbi asina ngura asi nekukurumidza kuparadza zviso zvekabhoni zvakajairwa. Uyezve, tsvina shoma, iyo inowanzo furatirwa muhuwandu hwemvura, inogona kushanda se catalysts kune nzira dze corrosion dzakadai se pitting kana crevice corrosion.
Njodzi yekubuda kwemvura inokonzerwa nekusarudzwa kwezvinhu zvisiri izvo inodarika kutadza kwemuchina. Mukugadzirisa makemikari uye kunatswa kwepetrochemical, makemikari anonyungudika emhepo (VOCs) uye kusvibiswa kwemhepo kune njodzi zvinofanirwa kudzorwa zvakanyanya. Mitemo yeEnvironmental Protection Agency (EPA) inowanzo raira kuti kuburitswa kwepombi seal kurambe kuri pasi pe500 parts per million (ppm) threshold. Kuputsika kwechisimbiso kunokonzerwa nengura kana kuora kwe elastomer kunogona kukonzera kutyorwa kwemitemo nekukurumidza, zvichikonzera kuvharwa kwechimbichimbi uye kukonzera mishumo yezvakatipoteredza.
Mari yekukundikana inobatanidzwa nekusaenderana kwezvinhu zvakanaka
Migumisiro yemari yekusaenderana kwezvinhu zvakanaka inodarika mutengo wekutanga wekutenga chisimbiso chemuchina. Kana chisimbiso chikakundikana nguva isati yakwana nekuda kwekurwiswa nemakemikari, mari yekutsiva zvakananga inowedzerwa nebasa rinodiwa pakuburitsa pombi, kubvisa tsvina, uye kudzoreredza. Zvinonyanya kukosha ndezvekuti, mari isina kunanga ine chekuita nenguva isina kurongwa yekushanda inogona kuva inoshamisa. Munzvimbo dzekugadzirisa dzinoshanda zvakanyanya, kutadza kwepombi kusingatarisirwi kunogona kumisa tambo yekugadzira, zvichikonzera mari yekushanda kubva pamadhora zviuru gumi kusvika pamusoro pemadhora zviuru makumi mashanu paawa zvichienderana neindasitiri uye kukosha kwechigadzirwa.
Pamusoro pezvo, kubuda kwemvura inoparadza kunogona kukonzera kukuvara kwemidziyo yakakomberedza. Chisimbiso chakakanganisika chinobvumira makemikari ane simba kurwisa shaft yepombi, mabheringi, uye dzimba dzemota. Chinhu chinotanga sekutadza kushanda kwese ...
Sarudzo dzeZvisimbiso zveMechanical Zvinoramba Kuora
Kugadzira chisimbiso chemuchina chinodzivirira ngura kunoda kusarudza zvinhu zvakakosha zvenzvimbo nhatu dzakasiyana: nzvimbo dzekutanga dzechisimbiso, midziyo yesimbi (masprings, mapini ekufambisa, uye magland), uye zvinhu zvechipiri zvechisimbiso (ma-O-rings nemagaskets). Nzvimbo yega yega inosangana nekumanikidzwa kwakasiyana kwekushanda, zvichireva kuti chinhu chinoshanda zvakanaka seO-ring isingachinji chingasakodzera zvachose chisimbiso chinoshanduka, chinogadzira kupisa.
Vhara zvinhu zvekumeso zvakaita sesilicon carbide
Zviso zvechisimbiso chikuru ndizvo zvinonyanya kukosha, sezvo zvichichengetedza firimu remvura risingaonekwe zvakanaka uku zvichitenderera.Silicon carbide (SiC)inoonekwa zvakanyanya sechisimbiso chepamusoro-soro chekushandiswa zvakanyanya kwemakemikari. Kunyanya, silicon carbide yakatwasuka (alpha) inopa makemikari anodzivirira kubva kupH iri pakati pe0 kusvika 14 uye inogona kutsungirira tembiricha yekushanda kusvika 300°C (572°F). Kusiyana nesilicon carbide yakatwasuka, ine silicon yakasununguka inogona kubviswa ne caustics yakasimba kana hydrofluoric acid, alpha-sintered SiC inoramba yakagadzikana muchimiro mune dzinenge dzese nzira dzekurwisa.
Dzimwe sarudzo dzezvinhu zvekumeso dzinosanganisira tungsten carbide (WC) uye mhando dzakasiyana dzekabhoni. Tungsten carbide yakasimba uye haikanganisike, zvichiita kuti ikwanise kushandiswa muslurry, asi kuramba kwayo makemikari kunoenderana zvakanyanya ne binder yayo. Tungsten carbide ine nickel-bound inowanzo shandiswa pane cobalt-bound variants munzvimbo dzine ngura, kunyange ichiri kushaya SiC mune strong acids. Antimony-impregnated kana resin-impregnated carbon faces dzinowanzo shandiswa se mating ring kurwisa SiC nekuda kwehunhu hwadzo hwakanaka hwekuzvizora, chero bedzi process fluid isina actives dzakasimba dzinorwisa carbon structure.
Simbi uye alloys dzinodzivirira ngura
Zvikamu zvesimbi zvechisimbiso, zvinosanganisira plate yegland, sleeve, uye masprings, zvinofanira kuramba ngura yakafanana uye kurwiswa kwakafanana negomba uye kuputika kweganda (SCC). Kunyange hazvo 316 stainless steel iriyo chiyero cheindasitiri chebasa rakajairika, inogona kubatwa negomba rinokonzerwa nechloride. Kune nzvimbo dzine hukasha, mainjiniya anofanirwa kudoma maalloy emhando yepamusoro zvichienderana nePitting Resistance Equivalent Number (PREN). PREN iri pamusoro pe40 inowanzo dikanwa kuti chloride kana acidic ive yakasimba.
Hastelloy C-276 (PREN > 45) ndeimwe yemhando dzenickel-molybdenum-chromium dzinoshandiswa zvakanyanya, ichidzivirira zvakanyanya gasi rechlorine rakanyorova, mahypochlorite, uye akasiyana-siyana ema organic ne inorganic acids. Titanium Grade 2 inowanzo sarudzwa kuti ishandiswe mu oxidizing media uye mukushandiswa kwemvura yegungwa nekuda kweganda rayo rakasimba, rinodzivirira oxide, kunyangwe iri nyore kubatwa ne chlorine yakaoma. Alloy 20 imwe sarudzo yakajairika, yakagadzirwa zvakanyanya kudzivirira kurwiswa kwe sulfuric acid pakupisa kwakanyanya uye kuwanda kwayo.
Elastomers nezvinhu zvechipiri zvekuvhara
Zvinhu zvechipiri zvekuvhara, zvinowanzova maO-rings, zvinopa chisimbiso chisina kusimba pakati pechisimbiso chemakanika nebhokisi repombi. Kusarudzwa kweElastomer kazhinji ndiko kunoderedza mashandiro emakemikari nekupisa kwechisimbiso. Fluoroelastomers (FKM), inozivikanwa nezita rekuti Viton, ndiyo inowanzo shandiswa kune akawanda maasidhi manyoro uye mafluids anobva papetroleum asi inodonha nekukurumidza mumaketones, amines, uye alkalis dzakasimba.
Kana paine ngura yakanyanya, ma perfluoroelastomers (FFKM), akadai seKalrez kana Chemraz, anodiwa. Makomputa eFFKM anopa makemikari anodzivirira anenge akafanana nePTFE asi anochengetedza elastic memory inodiwa kuti avharwe ne dynamic sealing. Anogona kutsungirira zvinonyungudutsa zvine simba, maasidhi akasimba, uye mabhesi pakupisa kunogara kuchishanda kusvika ku327°C (620°F). Kana bhajeti shoma richidzivirira kushandiswa kweFFKM yakazara, PTFE-encapsulated FKM kana silicone O-rings zvinopa imwe nzira inodhura zvishoma, zvichipa makemikari asina simba ePTFE jacket ne mechanical resistance ye elastomer core.
| Rudzi rweElastomer | Tembiricha Inoenderera Mberi Yakanyanya | Profile yeKuramba kweMakemikari | Mutengo Unowedzera |
|---|---|---|---|
| FKM (Fluoroelastomer) | 204°C (400°F) | Yakanaka pamafuta, asidhi diki; Yakanaka pa ketones | 1x (Nheyo yekutanga) |
| EPDM | 150°C (300°F) | Yakanaka pakupisa, mvura inopisa; Yakanaka pamafuta | 0.8x |
| PTFE-Yakavharirwa | 204°C (400°F) | Kudzivirira kwakanaka kwepasi rose; Inowanzo rwara nekutonhora | 3x kusvika 5x |
| FFKM (Perfluoroelastomer) | 327°C (620°F) | Kuramba kuri pedyo nepasi rose; Kuchena kwakanyanya | 15x kusvika 30x |
Maitiro Ekuongorora Zvinhu zveChisimbiso paMamiriro Ebasa
Kuongorora zvinhu zvechisimbiso kunoda kupfuura machati ekushandisa makemikari uye kuongorora mamiriro ekushanda. Chinhu chisina makemikari patembiricha yemumba chinogona kuora nekukurumidza kana chikapiswa nekupisa kunogadzirwa pachisimbiso kana kana huwandu hwemvura huchichinja panguva yekukanganiswa kwemaitiro. Mainjiniya anofanirwa kuongorora thermodynamic yese uye makemikari ekushandisa.
Zvinhu zvinoshanda zvakaita sekuwanda, machloride, uye tembiricha
Tembiricha, kuwanda, uye kuvapo kwemaion chaiwo zvinoshandura zvakanyanya mwero wengura. Semuenzaniso, 316 stainless steel inogamuchirwa zvakakwana mumvura yekupisa kwemhepo, asi kana kuwanda kwechloride kuchidarika 1000 ppm uye tembiricha dzichikwira pamusoro pe60°C (140°F), chinhu chacho chinova nyore kubatwa ne stress corrosion cracking (SCC) uye kukurumidza kupwanya. Nekuda kweizvozvo, kushandiswa kunosanganisira hot brine kana mvura yegungwa kunowanzoda super duplex stainless steels kana titanium.
Kuwanda kweasidhi kwakakoshawo. Sulfuric acid ine ngura isina kurongeka: sulfuric acid inoparadza zvakanyanya simbi dzakawanda, ichida Hastelloy kana Alloy 20, nepo sulfuric acid inoparadza zvakanyanya (>90%) dzimwe nguva inogona kugadziriswa nesimbi dzakajairwa dzekabhoni patembiricha yekunze nekuda kwekuumbwa kwefirimu re sulfate rinonyungudutsa. Zvisinei, kana acid inonyungudutsa ikatora hunyoro kubva mumhepo, kusanganiswa kwacho kunotanga pakarepo kurwisa kwakasimba kwesimbi inonyungudutsa.
Kutengeserana kwezvinhu uye zvinhu zvekuenzanisa
Kusarudza chinhu chakakodzera kunowanzo sanganisira kuenzanisa hunhu hwemakanika nemakemikari. Kunyange zvazvo alpha-sintered silicon carbide ichidzivirira ngura zvisingaenzaniswi, inopfava zvikuru. Kana pombi ikasangana nekuvhunduka kwakanyanya kana kutsauka kweshaft, SiC faces inogona kupwanyika zvakanyanya. Mukushandiswa uko kuvhunduka kwemakanika kuri chinhu chikuru pamwe chete nekuora, mainjiniya vanogona kukanganisa nekushandisa tungsten carbide face yakasimba, kunyange isina makemikari akawanda.
Kufambiswa kwemafuta nekupisa chimwe chinhu chakakosha pakuenzanisa. Zviso zvechisimbiso zvinogadzira kupisa kwakakosha, uko kunofanirwa kunyungudutswa mumvura inoyerera kudzivirira kuti mvura isatsvedzerere kuita utsi. SiC ine kufambiswa kwemafuta nekupisa kwakanaka, ichibvisa kupisa kubva pachisimbiso nekukurumidza kupfuura alumina ceramic kana carbon. Kugona uku kunoderedza njodzi yekuvhunduka kwemafuta nekupisa uye kunowedzera hupenyu hwema elastomers echipiri.
| Zvinhu zvechiso | Kuomarara kweVickers (kg/mm²) | Kufambisa kwekupisa (W/m·K) | Kuramba Kuora | Njodzi yeKutyoka/Kutyoka |
|---|---|---|---|---|
| Kabhoni Graphite | 150 - 250 | 10 - 15 | Pakati Nepakati kusvika Pakanaka | Zvakaderera |
| Tungsten Carbide (Ni binder) | 1400 - 1600 | 80 - 90 | Kugona | Zviri pakati nepakati |
| Alpha-Sintered SiC | 2500 – 2800 | 120 - 130 | Yakanaka (Yese) | Yakakwirira |
| Alumina Ceramic (99.5%) | 1800 - 2000 | 25 - 35 | Kugona chose | Yakakwirira Zvikuru |
Kana kukwidziridzwa kamwe chete kwezvinhu kusina kukwana
Mune mamwe mashandisirwo akanyanya, kuvandudza simbi nezviso zvechisimbiso chimwe chete chemuchina hakukwani kuti pave nechokwadi chekuti mvura ine njodzi, ine chepfu, kana kuti inogona kupomera kana yasangana neokisijeni yemumhepo, kushandiswa kunodakurongeka kwechisimbiso chemakanika maviriZvisimbiso zviviri zvinoshandisa maseti maviri ezvisimbiso uye zvinoisa chidziviriro kana mvura inovhara pakati pazvo.
Pasi pehurongwa hwemapaipi eAmerican Petroleum Institute (API), hwakaita seAPI Plan 53A kana 54, mvura inovharirwa inotenderedzwa pakati pezvisimbiso zvemukati nezvinobuda mubhodhi. Mvura iyi inochengetwa iri padzvinyiriro inosvika 10% kusvika 15% (kazhinji 1.5 kusvika 2.0 bar) yakakwira kupfuura kumanikidzwa kwebhokisi rekuisa pombi. Nekuti mvura inovharirwa iri padzvinyiriro yakakwira, chero kubuda kwemvura pamusoro pechisimbiso chemukati kunoyerera mukuita, zvichiita kuti mvura inoparadza isambobata zvikamu zvechisimbiso chekunze kana kuti ibude mumhepo. Nzira iyi inobvumira midziyo yechisimbiso chekunze kuti ivakwe nezvinhu zvakajairwa, zvisingadhuri.
Zvinhu Zvinodiwa Pakutenga Nekutevedzera Mutemo Mukusarudza Zvinhu
Kuwana zvisimbiso zvemakanika zvinodzivirira ngura kunosanganisira kufamba nematanho akaomarara ekugovera zvinhu, kutarisira nguva yakareba yekushandisa zvinhu zvekunze, uye kuona kuti zvinotevedzera mitemo yeindasitiri. Kukundikana kunyora zvakanaka uye kusimbisa zvinhu zvinogona kukonzera kukundikana kukuru uye mhosva dzakakomba dzemutemo, kunyanya muzvikamu zvine hutungamiriri hwakawanda sengemafuta negesi, mishonga, uye kugadzirwa kwemakemikari.
Mitemo, magwaro, uye kurongeka kwekutevera
Mashandisirwo ane njodzi huru anoda magwaro akasimba kuti aonekwe kuti zvinhu zvakatarwa zvakashandiswa pakugadzira chisimbiso. Muindasitiri yemafuta, zvisimbiso zvemakanika zvinofanirwa kugara zvichitevedzera mitemo yeAPI 682 4th Edition, iyo inorayira mhando dzezvinhu zvakasiyana-siyana zvemamiriro akasiyana ebasa. Pamashandisirwo anosanganisira hydrogen sulfide (H2S), zvikamu zvesimbi zvinofanirwa kutevedzera NACE MR0175 / ISO 15156 kudzivirira kutsemuka kwe sulfide.
Kuti vave nechokwadi chekuti zvinhu zviri kutsvagwa zviri nyore, mainjiniya ekutenga zvinhu vanowanzo da Material Test Reports (MTRs) yezvikamu zvese zvesimbi zvakanyoroveswa. Uyezve, nzvimbo dzinogona kuita bvunzo yePositive Material Identification (PMI) kana dzagamuchirwa. PMI inoshandisa X-ray fluorescence (XRF) analyzers kusimbisa kuumbwa kwezvinhu zviri mu alloys, zvichiita kuti mutengesi asatsive 304 stainless steel panzvimbo yeHastelloy C-276 yakakumbirwa.
Kugona kwemutengesi uye njodzi dzekuwanikwa kwemari
Kuwanikwa kwe alloys dzekunze uye ma elastomers anoshanda zvakanyanya kune njodzi dzakajairika.
Maitiro Ekusarudza Musanganiswa Wakanakisisa Wezvinhu
Zvinhu Zvinokosha Zvaunofanira Kuziva
- Mhedziso dzakakosha uye chikonzero chechisimbiso chemuchina chinodzivirira ngura
- Magadzirirwo, kutevedzera mitemo, uye kuongororwa kwenjodzi zvinofanirwa kuongororwa usati waita chibvumirano
- Matanho anotevera anoshanda uye mazano anogona kushandiswa nevaverengi ipapo ipapo
Mibvunzo Inowanzo bvunzwa
Chii chipfeko chechisimbiso chinowanzo shandiswa pakuisa chisimbiso chinodzivirira ngura?
Alpha-sintered silicon carbide inowanzo kuve sarudzo yakanakisisa nekuti inobata maacid akawanda, alkalis, uye tembiricha yepamusoro zviri nani pane carbon faces yakajairwa.
Tungsten carbide kana carbon faces zvinofanira kudzivirirwa rini?
Dzivisa kabhoni yakajairika muzvinwiwa zvine simba re oxidizing kana zvinoparadza zvakanyanya. Chenjerera ne tungsten carbide kana zvichibvira kurwiswa nemakemikari; tarisa kuti mvura yacho inoenderana sei usati wasarudza.
Zviso zvese zvesilicon carbide seal zvinodzivirira ngura zvakaenzana here?
Kwete. Alpha-sintered SiC inowanzo dzivirira makemikari zviri nani pane reaction-bonded SiC, kunyanya muzvinhu zvine simba uye mamwe mabasa emakemikari ane simba.
Ndezvipi zvimwe zvikamu zvechisimbiso zvinofanira kuramba ngura kunze kwekunge zviso zvacho zviine ngura?
Tarisawo zvikamu zvesimbi nema elastomers. Zvitubu, ma glands, uye ma O-rings zvinofanira kuenderana ne process fluid, tembiricha, uye kumanikidzwa kana zvikasadaro chisimbiso chinogona kutadza kushanda kunyangwe paine premium faces.
Ko Victor Seals inogona kubatsira here kuenzanisa zvisimbiso zvinodzivirira ngura nemodheru dzepombi dzeOEM?
Ehe. Victor Seals inopa zvisimbiso zvemakanika zvinoenderana neOEM uye zvinotsiva zvemhando dzakawanda dzemapombi emumaindasitiri, zvichibatsira mapoka ekugadzirisa kusarudza zvinhu zvakakodzera zvekushandisa pakuparadza.
Nguva yekutumira: Chikumi-13-2026