Madatsar ruwa muhimmin bangare ne na kusan kowace cibiyar masana'antu. Ana kiranta da zuciyar kowace tsarin iska ko iskar gas, waɗannan kadarorin suna buƙatar kulawa ta musamman, musamman ma shafa musu man shafawa. Domin fahimtar muhimmiyar rawar da man shafawa ke takawa a cikin madatsar ruwa, dole ne ka fara fahimtar ayyukansu da kuma tasirin tsarin akan man shafawa, wane man shafawa za ka zaɓa da kuma gwajin nazarin mai da ya kamata a yi.
● Nau'ikan Matsawa da Ayyukan
Akwai nau'ikan na'urorin matsa lamba daban-daban, amma babban aikinsu kusan koyaushe iri ɗaya ne. An tsara na'urorin matsa lamba don ƙara matsin lamba na iskar gas ta hanyar rage girmansa gaba ɗaya. A cikin sauƙi, mutum zai iya tunanin na'urar matsa lamba a matsayin famfo mai kama da iskar gas. Aikin yana da iri ɗaya, babban bambanci shine na'urar matsa lamba tana rage girma kuma tana motsa iskar gas ta cikin tsarin, yayin da famfo kawai ke matsawa da jigilar ruwa ta cikin tsarin.
Ana iya raba matsewar zuwa rukuni biyu na gama gari: positive displacement da dynamic. Matsewar juyawa, diaphragm da reciprocating suna faɗuwa ƙarƙashin rarrabuwar positive-displacement. Matsewar juyawa suna aiki ta hanyar tilasta iskar gas zuwa ƙananan wurare ta hanyar sukurori, lobes ko vanes, yayin da matsewar diaphragm ke aiki ta hanyar matse iskar gas ta hanyar motsi na membrane. Matsewar juyawa suna matse iskar gas ta hanyar piston ko jerin pistons da crankshaft ke jagoranta.
Madannin centrifugal, mixed-flow da axial suna cikin rukunin masu aiki. Madannin centrifugal yana aiki ta hanyar matse iskar gas ta amfani da faifai mai juyawa a cikin gida mai tsari. Madannin centrifugal mai aiki da tsari yana aiki kamar madannin centrifugal amma yana tuƙa kwarara ta axial maimakon ta radial. Madannin centrifugal suna haifar da matsi ta hanyar jerin foils na iska.
● Tasirin Man shafawa
Kafin a zaɓi man shafawa na compressor, ɗaya daga cikin manyan abubuwan da za a yi la'akari da su shine nau'in nau'in man shafawa da za a iya fuskanta yayin da ake aiki. Yawanci, abubuwan da ke rage man shafawa a cikin compressors sun haɗa da danshi, zafi mai yawa, iskar gas da iska mai matsewa, ƙwayoyin ƙarfe, narkewar iskar gas, da saman fitar da zafi.
Ka tuna cewa idan aka matse iskar gas, zai iya yin mummunan tasiri ga mai kuma ya haifar da raguwar danko tare da ƙafewa, iskar shaka, ajiyar iskar carbon da kuma daskarewa daga tarin danshi.
Da zarar ka san muhimman abubuwan da za a iya yi wa man shafawa, za ka iya amfani da wannan bayanin don rage zaɓinka don man shafawa mai kyau na compressor. Halayen man shafawa mai ƙarfi zai haɗa da ingantaccen kwanciyar hankali na iskar shaka, ƙarin abubuwan hana lalacewa da tsatsa, da kuma kaddarorin rushewa. Hannun roba na iya yin aiki mafi kyau a cikin kewayon zafin jiki mai faɗi.
● Zaɓin Man Shafawa
Tabbatar da cewa kana da man shafawa mai kyau zai zama muhimmi ga lafiyar na'urar kwampreso. Mataki na farko shine a yi la'akari da shawarwarin da aka bayar daga masana'antar kayan aiki na asali (OEM). Danko mai na'urar kwampreso da abubuwan da ke cikin da ake shafawa na iya bambanta sosai dangane da nau'in na'urar kwampreso. Shawarwarin masana'anta na iya samar da kyakkyawan wurin farawa.
Na gaba, yi la'akari da iskar da ake matsewa, domin tana iya yin tasiri sosai ga man shafawa. Matsi na iska na iya haifar da matsaloli tare da yanayin zafi mai yawa. Iskar gas ta hydrocarbon tana narkar da man shafawa, sannan kuma, a hankali, tana rage danko.
Iskar gas mai aiki da sinadarai kamar carbon dioxide da ammonia na iya yin aiki da mai kuma su rage danko da kuma samar da sabulu a cikin tsarin. Iskar gas mai aiki da sinadarai kamar oxygen, chlorine, sulfur dioxide da hydrogen sulfide na iya samar da tarin abubuwa masu tauri ko kuma su zama masu lalata sosai idan danshi ya yi yawa a cikin mai.
Ya kamata ku kuma yi la'akari da yanayin da man shafawa na compressor ke shiga. Wannan na iya haɗawa da yanayin zafi na yanayi, zafin aiki, gurɓatattun iska da ke kewaye da shi, ko da na'urar compressor tana ciki da kuma a rufe ko a waje kuma tana fuskantar mummunan yanayi, da kuma masana'antar da ake amfani da ita.
Masu matsewa suna yawan amfani da man shafawa na roba bisa ga shawarar OEM. Masana'antun kayan aiki galibi suna buƙatar amfani da man shafawa masu alama a matsayin sharaɗin garantin. A irin waɗannan yanayi, kuna iya jira har sai lokacin garanti ya ƙare kafin a canza man shafawa.
Idan aikace-aikacenku a halin yanzu yana amfani da man shafawa mai tushen ma'adinai, dole ne a yi amfani da shi bisa ga ka'ida, domin wannan sau da yawa zai fi tsada. Tabbas, idan rahotannin nazarin mai naka suna nuna takamaiman damuwa, man shafawa na roba na iya zama kyakkyawan zaɓi. Duk da haka, tabbatar ba wai kawai kuna magance alamun matsala ba ne, a'a, kuna magance tushen matsalar ne kawai.
Wadanne man shafawa na roba ne suka fi dacewa a aikace-aikacen compressor? Yawanci, ana amfani da polyalkylene glycols (PAGs), polyalphaolefins (POAs), wasu diesters da polyolesters. Wanne daga cikin waɗannan na'urorin roba ne za a zaɓa zai dogara ne akan man shafawa da kake canzawa daga ciki da kuma aikace-aikacen.
Suna da juriya ga iskar shaka da kuma tsawon rai, polyalphaolefins gabaɗaya sun dace da maye gurbin man ma'adinai. Polyalkylene glycols waɗanda ba sa narkewa cikin ruwa suna ba da kyakkyawan narkewa don taimakawa wajen kiyaye tsabtace matsewar. Wasu esters suna da mafi kyawun narkewa fiye da PAGs amma suna iya fama da danshi mai yawa a cikin tsarin.
| Lamba | Sigogi | Hanyar Gwaji ta Daidaitacce | Raka'a | Nau'i na Musamman | Gargaɗi | Mai mahimmanci |
| Binciken Kayayyakin Man shafawa | ||||||
| 1 | Danko &@40℃ | ASTM 0445 | cSt | Sabon mai | Lamba +5%/-5% | Lamba + 10%/-10% |
| 2 | Lambar Acid | ASTM D664 ko ASTM D974 | mgKOH/g | Sabon mai | Matsayin juyawa +0.2 | Matsayin juyawa +1.0 |
| 3 | Abubuwan da ke ƙarawa: Ba, B, Ca, Mg, Mo, P, Zn | ASTM D518S | ppm | Sabon mai | Nau'i +/-10% | Nau'i +/-25% |
| 4 | Oxidation | ASTM E2412 FTIR | Shaƙa /0.1 mm | Sabon mai | An dogara da ƙididdiga kuma ana amfani da shi azaman kayan aikin tantancewa | |
| 5 | Nitration | ASTM E2412 FTIR | Shaƙa /0.1 mm | Sabon mai | A kididdiga, an yi amfani da kayan aikin scceenintf kuma an yi amfani da shi a matsayin kayan aiki na musamman. | |
| 6 | RUL mai hana tsufa | ASTMD6810 | Kashi | Sabon mai | Nau'i -50% | Nau'i -80% |
| Launin Zane Mai Ƙarfin Varnish | ASTM D7843 | Sikeli 1-100 (1 shine mafi kyau) | <20 | 35 | 50 | |
| Binciken Gurɓatar Man shafawa | ||||||
| 7 | Bayyanar | ASTM D4176 | Dubawar gani ta zahiri don samun ruwa kyauta da kuma tayar da hankali | |||
| 8 | Matsayin danshi | ASTM E2412 FTIR | Kashi | Manufa | 0.03 | 0.2 |
| Crackle | Yana da sauƙin ragewa zuwa 0.05% kuma ana amfani dashi azaman kayan aikin tantancewa | |||||
| Banda | Matsayin danshi | ASTM 06304 Karl Fischer | ppm | Manufa | 300 | 2,000 |
| 9 | Adadin Ƙwayoyin Cuku | ISO 4406: 99 | Lambar ISO | Manufa | Lambar zangon manufa +1 | Lambobin zangon manufa +3 |
| Banda | Gwajin Faci | Hanyoyin mallakar mallaka | Ana amfani da shi don tabbatar da daidaito ta hanyar gwajin gani | |||
| 10 | Abubuwan gurɓatawa: Si, Ca, Me, AJ, da dai sauransu. | ASTM DS 185 | ppm | <5* | 6-20* | >20* |
| *Ya danganta da gurɓata, aikace-aikace da muhalli | ||||||
| Binciken Ruɓewar Man Shafawa (Lura: ya kamata a bi karatun da ba daidai ba tare da nazarin ferrography) | ||||||
| 11 | Abubuwan da ke lalata tarkace: Fe, Cu, Cr, Ai, Pb. Ni, Sn | ASTM D518S | ppm | Matsakaicin Tarihi | Nau'i + SD | Nau'i +2 SD |
| Banda | Yawan ƙarfe | Hanyoyin mallakar mallaka | Hanyoyin mallakar mallaka | Matsakaicin Hirtoric | Nau'i + S0 | Nau'i +2 SD |
| Banda | Fihirisar PQ | PQ90 | Fihirisa | Matsakaicin Tarihi | Nau'i + SD | Nau'i +2 SD |
Misali na gwajin nazarin mai da iyakokin ƙararrawa ga masu damfara na centrifugal.
● Gwaje-gwajen Nazarin Mai
Ana iya yin gwaje-gwaje da yawa akan samfurin mai, don haka yana da matuƙar muhimmanci a yi la'akari da waɗannan gwaje-gwajen da kuma mitar ɗaukar samfurin. Gwajin ya kamata ya ƙunshi manyan nau'ikan nazarin mai guda uku: halayen ruwan mai, kasancewar gurɓatattun abubuwa a cikin tsarin shafa mai da duk wani tarkace da ke fitowa daga injin.
Dangane da nau'in matsewa, za a iya samun ƙananan canje-canje a cikin allon gwaji, amma gabaɗaya abu ne da aka saba gani a matsayin ɗanko, nazarin abubuwan da ke cikinsa, gwajin infrared na Fourier transform infrared (FTIR), lambar acid, ƙarfin varnish, gwajin oxidation na tasoshin matsin lamba (RPVOT) da gwaje-gwajen demulsibility da aka ba da shawarar don tantance halayen ruwan mai.
Gwaje-gwajen gurɓataccen ruwa ga masu damfara za su iya haɗawa da bayyanar, FTIR da nazarin abubuwa, yayin da gwajin yau da kullun kawai daga mahangar lalacewa zai kasance nazarin abubuwa. Misalin allon gwajin nazarin mai da iyakokin faɗakarwa ga masu damfara na centrifugal an nuna su a sama.
Saboda wasu gwaje-gwaje na iya tantance damuwa da yawa, wasu za su bayyana a cikin rukunoni daban-daban. Misali, nazarin abubuwa na iya gano ƙimar raguwar ƙari daga mahangar yanayin ruwa, yayin da gutsuttsuran sassan daga nazarin tarkace ko FTIR na iya gano iskar shaka ko danshi a matsayin gurɓataccen ruwa.
Dakin gwaje-gwaje galibi ana saita iyakokin faɗakarwa azaman abubuwan da ba a saba gani ba, kuma yawancin masana'antu ba sa taɓa tambayar cancantarsu. Ya kamata ku sake dubawa kuma ku tabbatar cewa an ayyana waɗannan iyakokin don dacewa da manufofin amincin ku. Yayin da kuke haɓaka shirin ku, kuna iya ma son yin la'akari da canza iyakokin. Sau da yawa, iyakokin faɗakarwa suna farawa kaɗan kuma suna canzawa akan lokaci saboda ƙarin matakan tsabta, tacewa da sarrafa gurɓatawa.
● Fahimtar Man shafawa na Matsewa
Dangane da man shafawa, na'urorin matsa lamba na iya zama kamar masu rikitarwa. Da zarar kai da ƙungiyar ku kun fahimci aikin na'urar matsa lamba, tasirin tsarin akan man shafawa, wane man shafawa ya kamata a zaɓa da kuma gwaje-gwajen nazarin mai, to dacewar ku na kula da lafiyar kayan aikin ku za ta fi kyau.
Lokacin Saƙo: Nuwamba-16-2021