Nitrogen yemvura (LN2) inoita basa rakakosha munyika yehunyanzvi hwekubereka, senzira inonyanya kushandiswa pakuchengetedza zvinhu zvinokosha zvehupenyu, zvakaita semazai, urume, uye mazamu. Ichipa tembiricha yakaderera zvikuru uye kugona kuchengetedza masero, LN2 inoita kuti masero aya agare kwenguva refu. Zvisinei, kubata LN2 kune matambudziko akasiyana, nekuda kwekupisa kwayo kwakanyanya, kukurumidza kukura uye njodzi dzinogona kukonzerwa nekubviswa kweokisijeni. Tibatanei nesu sezvatinoongorora matanho akakosha ekuchengetedza uye maitiro akanakisa anodiwa kuchengetedza nzvimbo yekuchengetedza cryo yakachengeteka uye inoshanda, kuchengetedza vashandi, uye remangwana rekurapa kubereka.
Haier Biomedical Liquid Nitrogen Storage Solution
Kuderedza Njodzi Mukushanda kweCryogenic Room
Kune njodzi dzakasiyana-siyana dzine chekuita nekubata kweLN2, kusanganisira kuputika, kushaya mweya, uye kutsva kunokonzerwa nekupisa. Sezvo chiyero chekuwedzera kwehuwandu hweLN2 chiri 1:700 - zvichireva kuti 1 litre yeLN2 ichapwanyika kuti ibudise marita angangoita 700 egasi renitrogen - kungwarira kukuru kunofanirwa kutorwa pakubata mabhodhoro egirazi; bubble renitrogen rinogona kupwanya girazi, zvichigadzira zvidimbu zvinogona kukonzera kukuvara. Pamusoro pezvo, LN2 ine huwandu hwemhepo hunosvika 0.97, zvichireva kuti haina kusimba kupfuura mhepo uye inoungana pasi kana tembiricha yakaderera. Kuunganidzwa uku kunokonzera njodzi yekushaya mweya munzvimbo dzakamanikana, zvichideredza huwandu hweokisijeni mumhepo. Njodzi dzekushaya mweya dzinowedzerwa nekuburitswa nekukurumidza kweLN2 kugadzira makore emhepo. Kusangana nehutsi hunotonhora zvakanyanya, kunyanya paganda kana mumaziso - kunyangwe kwenguva pfupi - kunogona kutungamira mukutsva kunotonhora, chando, kukuvara kwenyama kana kunyange kukuvara kwemaziso zvachose.
Maitiro Akanakisisa
Kiriniki yega yega yekubereka inofanira kuita ongororo yemukati yengozi maererano nekushanda kwekamuri rayo rekudzivirira kupararira kwezvirwere. Mazano ekuti ungaite sei ongororo idzi anogona kuwanikwa mumabhuku eCodes of Practice (CP) kubva kuBritish Compressed Gases Association.1 Kunyanya, CP36 inobatsira kupa mazano pamusoro pekuchengetwa kwemagasi ekudzivirira kupararira kwezvirwere, uye CP45 inopa gwara pamusoro pekugadzirwa kwekamuri rekuchengetera zvirwere rekudzivirira kupararira kwezvirwere.[2,3]
Nhamba 1 Marongerwo
Nzvimbo yakakodzera yekamuri ine cryogenic ndiyo inopa mukana wekupinda nyore nyore. Kunyatsofunga nezvekuiswa kwemudziyo wekuchengetera weLN2 kunodiwa, sezvo uchida kuzadzwa nemudziyo une pressure. Zvakanaka kuti mudziyo we liquid nitrogen upiwe unofanira kunge uri kunze kwekamuri rekuchengetera, munzvimbo ine mhepo yakanaka uye yakachengeteka. Kuti pave nemhinduro huru dzekuchengetera, mudziyo wekupa unowanzo batanidzwa zvakananga nemudziyo wekuchengetera uchishandisa cryogenic transfer hose. Kana marongerwo echivako asingabvumidze mudziyo wekupa upiwe kunze, kungwarira kwakanyanya kunofanira kutorwa panguva yekubata liquid nitrogen, uye kuongororwa kwakadzama kwenjodzi kunofanirwa kuitwa, kunosanganisira masisitimu ekutarisa uye ekubvisa.
Kufema kweNO.2
Makamuri ese e cryogenic anofanira kunge aine mhepo inofefetera zvakanaka, aine masisitimu ekuburitsa mvura kudzivirira kuungana kwegesi yenitrogen uye kudzivirira kubva mukupera kweokisijeni, zvichideredza njodzi yekushaya mweya. Sisitimu yakadaro inofanira kukodzera gasi rinotonhora, uye yakabatana nesisitimu yekutarisa kupera kweokisijeni kuti ione kana huwandu hweokisijeni hwaderera pasi pe19.5 muzana, uye izvi zvinotanga kuwedzera kwehuwandu hwemhepo inochinjana. Madhiragi ekubvisa mvura anofanira kunge ari pasi nepo masensa ekubvisa mvura achifanira kuiswa anenge mita imwe pamusoro pepasi. Zvisinei, nzvimbo chaiyo inofanira kusarudzwa mushure mekuongororwa kwakazara kwenzvimbo, sezvo zvinhu zvakaita sehukuru hwekamuri uye marongerwo azvo zvichakanganisa nzvimbo yakakodzera. Alarm yekunze inofanirawo kuiswa kunze kwekamuri, ichipa yambiro dzeruzha nedzekuona kuratidza kana zvisina kuchengetedzeka kupinda.
Nhamba 3 Kuchengetedzeka Kwemunhu
Mamwe makiriniki anogonawo kusarudza kupa vashandi michina yekutarisa mweya wekufema wega uye kushandisa sisitimu yekubatsira apo vanhu vanongopinda mukamuri rine mhepo inopisa vari vaviri vaviri, zvichideredza nguva inosara munhu mumwe chete ari mukamuri chero nguva. Ibasa rekambani kudzidzisa vashandi nezvesystem yekuchengetedza inotonhora nemidziyo yayo uye vazhinji vanosarudza kuti vashandi vaite makosi ekuchengetedza nitrogen online. Vashandi vanofanirwa kupfeka michina yekudzivirira muviri yakakodzera (PPE) kudzivirira kutsva kwemhepo inopisa, kusanganisira dziviriro yemaziso, magirovhosi/magaro, shangu dzakakodzera, uye jasi remurabhoritari. Zvakakosha kuti vashandi vese vadzidziswe rubatsiro rwekutanga pamusoro pekuti vangagadzirisa sei kutsva kwemhepo inopisa, uye zvakanaka kuva nemvura inodziya pedyo kuti isukure ganda kana paine kutsva.
Kugadzirisa Nhamba 4
Mudziyo une pressure nemudziyo weLN2 hazvina zvikamu zvinofamba, zvichireva kuti purogiramu yekuchengeta yegore negore ndiyo chete inodiwa. Mukati meizvi, mamiriro epaipi ye cryogenic anofanira kuongororwa, pamwe nekutsiviwa kwemavharuvhu ekusunungura akachengeteka. Vashandi vanofanira kugara vachitarisa kuti hapana nzvimbo dzechando - kungave pamudziyo kana pamudziyo wekudyara - izvo zvinogona kuratidza dambudziko ne vacuum. Nekunyatsoongorora zvinhu izvi zvese, uye purogiramu yekuchengetedza nguva dzose, midziyo ine pressure inogona kugara kwemakore anosvika makumi maviri.
Mhedziso
Kuve nechokwadi chekuti imba yekuchengetedza cryo yekiriniki yekubereka inoshandiswa LN2 yakachengeteka kwakakosha zvikuru. Kunyange hazvo blog iyi yatsanangura zvinhu zvakasiyana-siyana zvekuchengetedza, zvakakosha kuti kiriniki yega yega iite ongororo yayo yemukati yengozi kuti igadzirise zvinodiwa chaizvo uye njodzi dzinogona kuitika. Kushanda pamwe chete nenyanzvi dzezvidziyo zvekuchengetera zvinhu zvinotonhora, zvakaita seHaier Biomedical, kwakakosha kuti zvizadzise zvinodiwa zve cryostorage zvinobudirira uye zvakachengeteka. Nekuisa pamberi kuchengetedzeka, kutevedzera tsika dzakanakisisa, uye kushanda pamwe chete nenyanzvi dzinovimbwa, makiriniki ekubereka anogona kuchengetedza nzvimbo yekuchengetedza cryo yakachengeteka, kuchengetedza vashandi pamwe nekushanda kwezvinhu zvinokosha zvekubereka.
Mareferensi
1. Mitemo Yekuita - BCGA. Yakasvikwa musi wa18 Chivabvu, 2023. https://bcga.co.uk/pubcat/codes-of-practice/
2. Mutemo weKushanda 45: Masisitimu ekuchengetera ma cryogenic ekurapa. Dhizaini uye mashandiro. British Compressed Gases Association. Yakaburitswa online 2021. Yakasvikwa Chivabvu 18, 2023. https://bcga.co.uk/wp-
3.zviri mukati/zviri kurodha/2021/11/BCGA-CP-45-Original-05-11-2021.pdf
4. Mutemo weKushanda 36: Kuchengetera mvura inoyerera pachivako chevashandisi. British Compressed Gases Association. Yakaburitswa online 2013. Yakasvikwa musi wa18 Chivabvu, 2023. https://bcga.co.uk/wp-content/uploads/2021/09/CP36.pdf
Nguva yekutumira: Kukadzi-01-2024
