Buku Lotsogolera Kukhazikitsa Kondensala ya Machitidwe Otentha Kwambiri
Kondensa ndi gawo lofunika kwambiri pakupanga mphamvu zamagetsi a geothermal, makamaka m'mafakitale a flash steam ndi binary cycle. Ntchito yake ndikusintha nthunzi yogwiritsidwa ntchito ya turbine kukhala madzi (condensate) kuti kayendedwe ka kutentha kazitha kuyenda bwino, kuthamanga kwa turbine kumbuyo kukhale kochepa, ndipo madzi ogwirira ntchito amatha kubwezeretsedwanso kuti agwiritsidwenso ntchito kapena kulowetsedwanso. Kukhazikitsa kondensa moyenera kumatsimikiza magwiridwe antchito a makinawo, kudalirika kwake, komanso nthawi yake yogwira ntchito. Nkhaniyi ikukambirana za kalozera wothandiza wokhazikitsa kondensa wa makina a geothermal, kuyambira pachiyambi chokonzekera mpaka kuyesa koyamba ndi kukonza.
1. Kumvetsetsa Mitundu ya Ma Condenser mu Ma Geothermal Systems
Musanayike, dziwani mtundu wa condenser yomwe yagwiritsidwa ntchito chifukwa imakhudza kapangidwe kake, mautumiki, ndi njira yoyikira:
1. Chokonzetsera pamwamba (chokonzetsera pamwamba)
Nthunzi ndi madzi ozizira sizisakanikirana; kutentha kumachitika kudzera m'machubu. Zimapezeka kwambiri m'mafakitale akuluakulu a geothermal chifukwa cha kuwongolera bwino khalidwe la condensate.
2. Chokondetsa cholumikizira mwachindunji (chokondetsa cholumikizira mwachindunji)
Nthunzi imasakanikirana mwachindunji ndi madzi ozizira. Izi nthawi zambiri zimakhala zosavuta komanso zotsika mtengo, koma khalidwe la kuzizira komanso kuwongolera mpweya wosazizira (NCG) kumafuna chisamaliro chapadera.
3. Kondensala yoziziritsidwa ndi mpweya (ACC)
Pogwiritsa ntchito mpweya ngati malo oziziritsira, ndi yoyenera malo omwe madzi sapezeka mokwanira. Komabe, imafuna malo akuluakulu ndipo imakhudzidwa ndi kutentha kwa malo ozungulira.
Kuphatikiza apo, makina otenthetsera madzi nthawi zambiri amakhala ndi mpweya wosazizira monga CO₂ ndi H₂S, komanso kuthekera kwa dzimbiri ndi kukula. Zinthu izi zimakhudza kusankha zipangizo ndi makina othandizira monga makina otayira mpweya ndi kutulutsa mpweya.
2. Kukonzekera Kapangidwe ndi Zofunikira pa Malo
Gawo lokonzekera limatsimikizira kuti kukhazikitsa kwake kukuyenda bwino. Zinthu zofunika kuzitsimikizira:
- Mphamvu ya kutentha ndi momwe zimagwirira ntchito: kuchuluka kwa madzi otuluka mu nthunzi, mphamvu ya condenser, kutentha kwa madzi ozizira, ndi cholinga cha turbine back-pressure.
- Kupezeka kwa zinthu zofunika: madzi ozizira (nsanja yozizira/kamodzi kokha), magetsi a mapampu ndi makina oyeretsera mpweya, zida zamadzi, ndi ngalande zotulutsira madzi.
- Kapangidwe: njira yolowera mu crane, payipi ya nthunzi yochokera ku turbine, nyumba yopopera madzi oundana, malo okonzera machubu, ndi malo ogwiritsira ntchito makina opopera madzi/vacuum.
– Maziko ndi kapangidwe kake: yang'anani mphamvu ya nthaka yonyamula, kukwera kwake, dongosolo la nangula, ndi zofunikira zoletsa kugwedezeka.
– Chitetezo ndi chilengedwe: Kuyang'anira H₂S/NCG, mpweya wabwino, kusamalira madzi oundana, komanso kutsatira malamulo am'deralo.
Pa gawo ili, zojambula monga GA (makonzedwe athunthu), P&ID, isometrics ya mapaipi, ndi zofunikira pa zida ziyenera kumalizidwa kuti zipewe kusintha kwa gawoli.
3. Kuyang'anira Zinthu ndi Kuwongolera Ubwino (QA/QC)
Musanayike chipangizocho, chitani kafukufuku wobwera:
- Kutsimikizira zikalata: satifiketi ya zinthu (MTC), pepala la deta, buku la wogulitsa, njira zowotcherera/WPS ndi chiyeneretso cha wowotcherera.
- Yang'anani momwe thupi lilili: kuwonongeka chifukwa cha mayendedwe, mabowo pa chipolopolo, kusintha kwa flange, ukhondo wamkati, ndi umphumphu wa chophimba.
– Zipangizo zosagwira dzimbiri: onetsetsani kuti mulingo wake ndi woyenera, mwachitsanzo, zosapanga dzimbiri zina zogwiritsidwa ntchito powononga kapena chitoliro cha titaniyamu cha madzi a m'nyanja m'njira zina.
- Zigawo zazikulu: chubu, chubu, baffle, expansion joint, gasket, nozzle, ndi manhole/handhole.
Pa makina otenthetsera pansi pa nthaka, chisamaliro chapadera chiyenera kuperekedwa pa kuthekera kwa dzimbiri la H₂S, kuyika mabowo, ndi silika. Onetsetsani kuti wogulitsa akupereka malangizo othandizira mankhwala ndi malire ogwirira ntchito.
4. Kukonzekera Maziko ndi Kuyika Kondensa
4.1 Ntchito Yoyambira
- Onetsetsani kuti maziko ake akhazikika motsatira miyezo, pamwamba pake pali ponseponse, ndipo mabotolo a nangula ayikidwa motsatira chitsanzocho.
- Yang'anani kutalika ndi mulingo pogwiritsa ntchito zida zoyezera (malo onse oimikapo magalimoto/ mulingo wa laser).
- Konzani zinthu zopangira grout (grout yosafota) kuti mudzaze mipata ya pansi pa mbale.
4.2 Kukweza ndi Kukonza Zingwe
- Gwiritsani ntchito dongosolo lonyamulira katundu lovomerezeka ndi HSE: mphamvu ya crane, slings, shackles, spreader bars ndi malo onyamulira katundu.
- Chitani kafukufuku wa zingwe musananyamule.
- Sungani malo apakati pa mphamvu yokoka ndipo pewani kupotoza chipolopolocho.
4.3 Kulinganiza ndi Kugawa Magulu
- Ikani condenser pa choyimilira, gwirizanitsani chitoliro cha nthunzi kuchokera ku turbine ndi chitoliro cha condensate.
- Onetsetsani kuti nozzle silandira katundu wochuluka wa paipi (nozzle load).
– Mukamaliza kukonza, pukutani ndi kupukuta motsatira njira yomaliza.
5. Kukhazikitsa Mapaipi ndi Zipangizo Zothandizira
Kukhazikitsa ma condenser si makina odziyimira pawokha. Kugwira ntchito bwino kumadalira kwambiri kuphatikiza ndi makina ena.
5.1 Mzere wa Nthunzi Yotulutsa Utsi
- Onetsetsani kuti m'mimba mwake wa chitoliro ndi njira yake zimachepetsa kutsika kwa kuthamanga kwa magazi.
- Ikani malo olumikizirana ngati pakufunika kuti pakhale kutentha kokwanira.
- Perekani zothandizira ndi zopachikira zoyenera kuti katundu asapitirire ku turbine kapena condenser.
5.2 Dongosolo la Madzi Oziziritsa
– Pa zoziziritsira madzi pamwamba, ikani mapaipi olowera ndi otulutsira madzi m'bokosi la madzi okhala ndi ma valve odzipatula, zotsekera, ndi zida zoyendera/kutentha.
- Onetsetsani kuti njira yoyendetsera madzi ili molingana ndi momwe idapangidwira (ngati pakufunika).
- Tsukani chitolirocho musanachilumikizane komaliza kuti zinyalala zisalowe mu chitolirocho.
5.3 Makina a Condensate ndi Hotwell
- Ikani chowongolera mulingo wa hotwell, pampu ya condensate, valavu yowunikira, ndi chingwe chotulutsira madzi/kutuluka kwa madzi.
- Onetsetsani kuti pali malo operekera zitsanzo kuti muwone ubwino wa madzi oundana.
– Ngati condensate yabwezedwa kapena kubayidwa, onetsetsani kuti mankhwala ndi kutentha zikugwirizana.
5.4 Makina Oyeretsera Mpweya ndi Osapumira Mpweya
Mu malo opangira magetsi a geothermal, makina otulutsa utsi a NCG ndi ofunikira kwambiri:
- Ikani chotulutsira mpweya wa nthunzi kapena chopopera madzi chopopera mpweya molingana ndi kapangidwe kake.
– Mapaipi a NCG ayenera kukhala opanda mpweya, osatulutsa madzi ambiri, komanso okhala ndi zida zopopera mpweya/zotsukira mpweya.
- Konzani njira yopita ku H₂S abatement unit ngati pakufunika.
6. Kukhazikitsa Zida ndi Kuwongolera
Zida zomwe zimayikidwa nthawi zambiri zimaphatikizapo:
- Choyezera kuthamanga/choyezera vacuum mu chipolopolo cha condenser.
- Chigawo cha kutentha pamalo olowera/otulutsira madzi ozizira.
- Chotumiza chapamwamba mu hotwell.
– Choyezera madzi ozizira ndi kuzizira (ngati pakufunika).
- Kuyang'anira kugwedezeka/kuwunikira momwe zinthu zilili pa mapampu okhudzana ndi izi.
Onetsetsani kuti kuyika zida kukukwaniritsa miyezo ya mawaya, nthaka, ndi IP rating. Kukonza kumachitika musanayambe kugwiritsa ntchito.
7. Kuyesa: Kuyesa Madzi, Kuyesa Vacuum, ndi Kuyang'ana Kutuluka kwa Madzi
Mukamaliza kukhazikitsa makina, yesani pang'onopang'ono:
1. Kuyesa madzi mbali ya madzi ozizira
Yesani chubu ndi bokosi la madzi kuti muwone ngati pali kutuluka madzi. Yesani kuthamanga kwa madzi motsatira malamulo (monga ASME) ndi zomwe wogulitsa akufotokoza. Lembani kuchepa kwa kuthamanga kwa madzi panthawi yogwira ntchito.
2. Kuyesa kutayikira kwa madzi kumbali ya nthunzi/vacuum
Onetsetsani kuti chipolopolo ndi flange zolumikizira zili zolimba musanagwiritse ntchito. Kutayikira pang'ono kungasokoneze vacuum ndikuwonjezera mphamvu yakumbuyo ya turbine.
3. Kuyesa kwa vacuum / kuyesa kwa madzi omwe akutuluka
Yesani kuchuluka kwa mpweya womwe umabwera, zomwe zingachepetse mphamvu. Konzani kutuluka kwa ma gasket, ma valve stems, kapena zida zolumikizira.
4. Kutsuka ndi kuyeretsa
Chitani kuyeretsa kuti muchotse zotsalira zowotcherera, mchenga, ndi sikelo. Pa machubu, gwiritsani ntchito njira yovomerezeka (kuyeretsa mankhwala kapena kuyeretsa makina).
8. Kuyambitsa ndi Kuyambitsa Koyamba
Gawo loyambitsa ntchito likufuna kuonetsetsa kuti condenser ikugwira ntchito motsatira kapangidwe kake:
- Yambitsani pampu yamadzi ozizira, khazikitsani kayendedwe ka madzi ndi kutentha.
- Yambitsani makina oyeretsera mpweya mpaka atafika pa mphamvu ya condenser yomwe mukufuna.
- Tsegulani kayendedwe ka nthunzi pang'onopang'ono, yang'anirani kutentha, kuthamanga kwa mpweya ndi kuchuluka kwa madzi otentha.
- Onetsetsani kuti dongosolo lowongolera mulingo ndi condensate likugwira ntchito popanda cavitation.
- Yang'anirani zizindikiro za magwiridwe antchito: kusiyana kwa kutentha kwa terminal (TTD), kukhazikika kwa vacuum, ndi kugwiritsa ntchito mphamvu ya pampu.
Mukayamba ntchito, yang'anirani zizindikiro monga kugwedezeka kwambiri, kuchuluka kwa ma hotwell osakhazikika, kapena kuchuluka kwa NCG komwe kumasonyeza mavuto otuluka kapena kusakwanira kwa mphamvu yochotsera mpweya.
9. Makhalidwe Abwino Okonza Poyamba
Kuti muwonetsetse kuti condenser ndi yolimba komanso yogwira ntchito bwino, chitani izi mukatha kuyiyika:
- Kuwunika kuipitsidwa kwa mpweya: yang'anani ngati kutentha kwatsika; konzani nthawi yoyeretsera chubu ngati TTD yawonjezeka.
- Kuwongolera mankhwala amadzi ozizira: kuchepetsa kukula, dzimbiri, ndi biofouling, makamaka pogwiritsa ntchito nsanja zoziziritsira.
– Kuyang'anira kutuluka kwa vacuum: kuwunika nthawi ndi nthawi ma gasket ndi ma valve.
– Kuyang'ana dongosolo la NCG: onetsetsani kuti pampu ya ejector/vacuum ikugwira ntchito mokwanira.
- Kulemba deta yogwira ntchito: kuchuluka kwa kuthamanga kwa condenser, kutentha kwa madzi ozizira, kuchuluka kwa madzi otuluka, ndi kuchuluka kwa madzi otentha ndikofunikira kuti zidziwike msanga.
Kutseka
Kukhazikitsa ma condenser a makina otenthetsera madzi kumafuna kulondola kwambiri kuposa kugwiritsa ntchito nthunzi wamba chifukwa cha kukhalapo kwa mpweya wosazizira, dzimbiri lomwe lingathe kupangika, komanso kufunika kwa vacuum yokhazikika. Njira yabwino imayamba ndi kusankha mtundu wa condenser, kukonzekera maziko ndi kapangidwe kake, kuyika mapaipi ndi zida zothandizira, komanso kuyesa madzi ndi vacuum musanayike. Potsatira malangizo awa, mutha kuchepetsa chiopsezo cha kutuluka kwa madzi, kusunga magwiridwe antchito a turbine, ndikuwonetsetsa kuti chomera chotenthetsera madzi chikugwira ntchito bwino komanso modalirika.
Ngati mukufuna, nditha kusintha nkhaniyi kuti igwirizane ndi mtundu winawake wa jenereta (flash/binary/ACC), kuwonjezera mndandanda woyika, kapena kupanga mtundu waukadaulo wokhala ndi ma standard references (ASME/HEI/API) ngati pakufunika.
