Izakhiwo Ezivikelayo Nezakhiwo Ezisekelayo Ezitshalweni Zamandla Kagesi: Imisebenzi Nokubaluleka
Izitshalo zamandla kagesi asebenzisa amanzi (i-PLTA) ziwumthombo wamandla avuselelekayo othembele emandleni amanzi okuqhuba ama-turbine ukuze akhiqize ugesi. Lapho abantu bekhuluma ngezitshalo zamandla kagesi asebenzisa amanzi, ukugxila kuvame ukuba semadamini, ama-turbine, kanye nama-generator. Kodwa-ke, ukuthembeka kwesitshalo samandla kagesi asebenzisa amanzi akunqunywa nje kuphela yilezi zingxenye eziyinhloko, kodwa futhi nayizakhiwo ezivikelayo kanye nezakhiwo ezisekelayo ezisebenza "ngemuva kwezigcawu." Lezi zakhiwo ziqinisekisa ukusebenza kwesitshalo okuphephile, okuphumelelayo, nokuqhubekayo, ngenkathi zivikela isakhiwo ezingozini zezikhukhula, ukuchitheka kwenhlabathi, ukuguguleka komhlabathi, kanye nokwehluleka kokwakhiwa.
Lesi sihloko sixoxa ngezakhiwo ezahlukahlukene zokuvikela kanye nezakhiwo ezisekelayo ezitshalweni zamandla kagesi, imisebenzi yazo, kanye nezizathu zokuthi kungani lezi zinto zibaluleke kangaka ekuphepheni nasekusebenzeni kwesitshalo.
1. Indima Yezakhiwo Ezivikelayo Nezakhiwo Ezisekelayo
Ngokuvamile, izakhiwo ezivikelayo nezakhiwo ezisekelayo esiteshini samandla kagesi ngamanzi zinezinhloso ezintathu eziyinhloko. Okokuqala, zivikela abantu, imvelo, kanye nempahla yesiteshi samandla ezingozini zamanzi kanye neze-geotechnical. Okwesibili, ziqinisekisa ukuqhubeka kokusebenza, zivumela isiteshi samandla kagesi kagesi ukuthi sikhiqize amandla njalo ngokwezidingo zegridi. Okwesithathu, zandisa isikhathi sokuphila kwesikhungo ngokulawula umonakalo obangelwa yizici zemvelo (imisinga, inhlabathi, izinto ezikhukhulekayo, izinguquko zokushisa, kanye nokuzamazama komhlaba).
Ngaphandle kwezakhiwo ezivikelayo ezanele, izitshalo zikagesi ezisebenzisa amanzi zisengozini yokuphazamiseka okukhulu: iziteshi ezivalekile, ama-turbine alimele yimfucumfucu kanye nenhlabathi, ukuguguleka kwedamu, noma ngisho nokwehluleka kwesakhiwo okungaba nomthelela omkhulu emiphakathini esezansi komfula.
2. Izakhiwo Zemifula Nezikhukhula: Ukulawulwa Kwezikhukhula Nokuphepha Kwamadamu
Esinye sezakhiwo ezibaluleke kakhulu zokuvikela umzila wokuchitheka. Umsebenzi wawo ukuhambisa amanzi amaningi lapho ukuchitheka komfula kukhula, ikakhulukazi ngesikhathi sezimvula noma izenzakalo ezimbi kakhulu. Umzila wokuchitheka uyasiza ekugcineni izinga lamanzi edamini, ukuvimbela ukuthi lidlule izinga eliphephile elingagcwala idamu.
Imigwaqo egeleza amanzi ngokuvamile ifakwe amasango noma yakhelwe ukugcwala okukhulu, kuye ngezidingo zokusebenza. Ngaphansi komgwaqo ogeleza amanzi, kufakwa isitsha sokumisa noma i-energy damper ukuze kuncishiswe ijubane lokugeleza kwamanzi futhi kuvinjelwe ukuguguleka kombhede womfula nezakhiwo ezizungezile. Ngaphandle kwe-energy damper, ukukhishwa kwamanzi okunamandla aphezulu kungabangela ukuguguleka okukhulu, kusongela izisekelo zokwakha kanye nokuqina kogu lomfula.
3. Irekhi Yokungenisa Nokulahla Udoti: Igcina Amanzi Ehlanzekile Ezinto Ezikhukhulekayo
Amanzi angena ku-turbine adlula esakhiweni sokungenisa amanzi. I-rack kadoti noma igridi yokuhlunga ivame ukufakwa phambi kokungenisa amanzi. Lokhu kuvimbela ukhuni, udoti, nezinto ezinkulu ukuthi zingangeni emseleni wamanzi. Uma lezi zinto zingena, zingabangela ukuvinjelwa, ukulimala kwama-valve, ngisho nomonakalo we-turbine ngenxa yomthelela.
Ama-racks kadoti awavikeli nje kuphela ama-turbine kodwa futhi asekela ukusebenza kahle ngoba ukugeleza okuhlanzekile kunciphisa ukuxokozela kanye nokulahlekelwa amandla. Izinhlelo zokuhlanza (zesandla noma zemishini) zivame ukungezwa ukuqinisekisa ukusebenza kahle kwama-racks kadoti, ikakhulukazi ngesikhathi semvula lapho izinto ezikhukhulekayo zanda.
4. Iziteshi Zokuthutha, Amapayipi, kanye Nezitokisi: Amanzi Aqondile Ngokuphepha
Ngemva kokudlula endaweni yokungenisa amanzi, amanzi ageleza ngomsele ohamba phambili noma ngomhubhe aye e-penstock. I-penstock iyipayipi elinomfutho ophezulu elithwala amanzi ngqo kuyi-turbine. Lesi sakhiwo kumele sakhiwe ukuze sibe namandla kakhulu ukuze simelane nomfutho ophezulu, okuhlanganisa nesando samanzi (igagasi lomfutho elibangelwa izinguquko ezisheshayo ekugelezeni).
Ukuvikelwa kwe-Penstock kuhlanganisa ukusetshenziswa kwensimbi enamandla kakhulu, amabhlogo e-anchor, kanye namadivayisi okuphepha njengama-valve amakhulu kanye nama-relief. Ukwehluleka kwe-Penstock akugcini nje ngokumisa ukukhiqizwa kukagesi kodwa futhi kubeka ingozi enkulu yokuphepha, njengoba amanzi anomfutho ophezulu angalimaza indawo ezungezile.
5. Ithangi Lokugeleza: Liqinisa Ukucindezeleka Futhi Linciphisa I-Water Hammer
Ezitshalweni zamandla kagesi ezisebenzisa amanzi ezinemihubhe emide kanye nezigxobo zokucindezela okuphezulu, kuvame ukwakhiwa ithangi lokukhuphuka. Umsebenzi walo ukuzinzisa ukuguquguquka kwengcindezi lapho umthwalo wethangi ushintsha ngokushesha. Lapho ithangi lokukhuphuka livala ngokuzumayo, ingcindezi ethangini lokukhuphuka iyanda kakhulu. Ithangi lokukhuphuka linikeza "ukuphakama" kwesikhashana kwamanzi, okuvimbela ukuqhuma kwengcindezi ngokweqile kanye nokulimaza ipayipi.
Ngamanye amazwi, ithangi lokushushuluza liyisakhiwo esivikelayo esigcina uhlelo lwe-hydraulic luzinzile, sandisa impilo ye-penstock, futhi sithuthukise ukuphepha kokusebenza.
6. Izakhiwo Zokulahlwa Kwendle kanye Nokulawulwa Kwendle
Ukuchitheka kwenhlabathi kuyinkinga enkulu ezitshalweni zikagesi zamanzi, ikakhulukazi ezindaweni ezinokuguguleka okukhulu kwamanzi phezulu komfula. Ukuchitheka kwenhlabathi emachibini kunganciphisa umthamo wokugcina, ikhanda elingezansi (ukuphakama okuphumelelayo kokuwa), futhi kusheshise ukukhuhlana kwezingxenye ze-turbine.
Ngakho-ke, izitshalo eziningi zamandla kagesi ezisebenzisa amanzi zihlonyiswe ngezakhiwo zokulawula inhlabathi, njenge:
– Isango lokungena noma umnyango wokukhipha amanzi odakeni phansi kwedamu ukuze kususwe ukungcola lapho amanzi ephuma kakhulu.
– I-Desander (ithangi lokuhlanza) ukuhlukanisa isihlabathi ngaphambi kokuba amanzi angene endaweni yokugcina amanzi.
– Isiteshi sokuhlanza ukuze kuqondiswe indle iphume ohlelweni.
Ukulawulwa kwendle akukhona nje ukugcinwa kwendle, kodwa kuyindlela yokugcina isitshalo sikagesi sisebenza isikhathi eside futhi sinciphise izindleko zokushintsha ama-turbine agugile.
7. Izindonga Ezivikelayo, Ukuvikelwa Kwamadwala, kanye Nokulawulwa Kokuguguleka Kwenhlabathi
Ukuguguleka komhlabathi okuzungeze amadamu, imisele, kanye nemifula engezansi komfula kungenza buthaka ukuzinza kwezakhiwo. Ngakho-ke, kwakhiwa izindonga ezigcina amanzi, imibhoshongo, kanye neziqiniso ezifana nama-gabion amatshe, ama-riprap, noma izimbozo zekhonkrithi.
Lezi zakhiwo ezivikelayo zisebenza ekuvimbeleni ukudilika komhlaba, zilondoloze ukuphakama nokuqondana kweziteshi, futhi zivikele imigwaqo yokungena kanye nezakhiwo ezisebenzayo. Ezimweni eziningi, ukulawulwa kokuguguleka komhlaba kuyisici esinqumayo ukuthi isakhiwo singaphila amashumi eminyaka ngaphandle kokulungiswa okukhulu.
8. Izakhiwo Zamandla Nezinhlelo Zokukhipha Amanzi: Ukuthembeka Kokusebenza Nokuphepha Emsebenzini
Indlu kagesi iyisakhiwo esihlala ama-turbine, ama-generator, izinhlelo zokulawula, kanye nemishini kagesi emikhulu. Ngaphezu kokuba yisikhungo sokukhiqizwa kwamandla, indlu kagesi kumele futhi ifakwe izinhlelo zokuphepha: phansi ezingangeni izikhukhula, amanzi angaphakathi, imigodi yamanzi kanye namaphampu, kanye nezinhlelo zokungenisa umoya kanye nezokucima umlilo.
Izinhlelo zokudonsa amanzi ezindaweni zezitshalo zamandla kagesi zivame ukunganakwa, kodwa zibalulekile ekuvimbeleni izikhukhula ezingalimaza imishini kagesi noma zibangele imijikelezo emifushane. Ukudonsa amanzi kugcina futhi izisekelo zokwakha zizinzile ngokunciphisa ingcindezi yamanzi embotsheni enhlabathini.
9. Imigwaqo Yokufinyelela, Amabhuloho, kanye Nezindawo Zokusekela Ukusebenza
Izitshalo zikagesi ezisebenzisa amanzi zidinga imigwaqo yokufinyelela, amabhuloho, kanye nezindawo zokuthutha ukuze zisekele ukuhamba kwabasebenzi kanye nokuthuthwa kwemishini esindayo. Uma kudingeka ukulungiswa kwe-turbine, ukushintshwa kwe-transformer, noma ukuhlolwa kwedamu, ukufinyelela okuhle kunquma izikhathi zokuphendula futhi kunciphisa isikhathi sokungasebenzi kwezitshalo.
Ezinye izakhiwo ezisekelayo zifaka phakathi izindawo zokugcina izingxenye ezisele, ama-workshop, amahhovisi okusebenza, kanye nezindawo zokuhlala noma zokuphepha. Konke lokhu kuqinisa ukulungela ukusebenza, ikakhulukazi ezitshalweni zamandla kagesi asebenza ngamanzi ezikude nezikhungo zedolobha.
10. Kungani lesi sakhiwo sibaluleke kangaka?
Ukubaluleka kwezakhiwo ezivikelayo kanye nezakhiwo ezisekelayo kungabonakala emiphumeleni emithathu eyinhloko:
1. Ukuphepha komphakathi kanye nemvelo
Izitshalo zikagesi ezisebenzisa amanzi zixhumana ngqo nezinhlelo zemifula. Ukwehluleka ukulawula izikhukhula, ukuguguleka komhlabathi, noma umfutho wamanzi kungadala izingozi zangempela ezindaweni ezingezansi komfula.
2. Ukuthembeka kokuhlinzekwa kukagesi
Ukuphazamiseka okuncane njengezindawo zokulahla udoti ezivalekile noma ukuchitheka ngokweqile kwenhlabathi kunganciphisa ukusebenza kahle futhi kuphoqe isitshalo ukuthi sivale. Izakhiwo zokusekela zinciphisa ukuphazamiseka futhi zisheshise ukubuyiselwa kwezitshalo.
3. Ukusebenza kahle kwezindleko zesikhathi eside
Ukutshalwa kwezimali ezinhlelweni zokuvikela nokusekela kukhulu, kodwa kushibhile kakhulu kunezindleko zomonakalo we-turbine, ukulungiswa kwedamu, noma ukulahlekelwa yimali engenayo ngenxa yokungasebenzi.
I-Penutup
Isitshalo sikagesi samanzi siyisimiso esiyinkimbinkimbi esithembele kokungaphezu nje kwama-turbine nama-generator. Ngemuva kwempumelelo yesitshalo sikagesi kulele inethiwekhi yezakhiwo ezivikelayo nezakhiwo ezisekelayo: imigwaqo yokuchitheka, izindawo zokungenisa kanye nezindawo zokulahla udoti, ama-penstock, amathangi okukhukhula, izinhlelo zokulawula indle, ukuvikelwa kokuguguleka, amanzi angcolile, kanye nezindawo zokufinyelela nokusebenza. Lezi zinto ziqinisekisa ukuthi amanzi asetshenziswa njengomthombo wamandla angaphathwa ngokuphepha nangokusebenza kahle, ngenkathi kuqinisekiswa ukuzinza kwesikhathi eside kwesitshalo sikagesi.
Ngokuqonda umsebenzi nokubaluleka kwalezi zakhiwo, singabona ukuthi ugesi wamanzi awuyona nje iphrojekthi yamandla, kodwa uyisingqalasizinda esibalulekile esidinga ukuhlela okuhlelekile, ukwakhiwa, kanye nokugcinwa kokuphepha kanye nokuphepha kwamandla.
