Ngā Hua
Mana Whakahaere Āhuarangi Ārai Porowhita
✧ Whakaahuatanga
Ko te takirere porowhita whakahaere hau, e mōhiotia ana ko te takirere tapahi hau, he momo whakaoho i roto i te pūnaha aunoa, he whakaoho kiriata hau puna maha, he whakaoho piston mānu rānei, me te takirere whakahaere, e whiwhi ana i te tohu o te taputapu whakahaere, e whakahaere ana i te tapahi, te hono, te whakawhiti rānei o te wai i roto i te paipa tukanga. He āhuatanga o te hanganga māmā, te urupare tairongo me te mahi pono. Ka taea te whakamahi whānui i roto i te hinu, te ahumahi matū, te whakarewa me ētahi atu rāngai whakaputa ahumahi. Ko te pūtake hau o te takirere tapahi hau me whai hau kōpeke kua tātarihia, ā, ko te reo e rere ana i roto i te tinana takirere me kore he poke me ngā matūriki wai me te hau.
He hua āhua-whakaaro te rango o te takirere porowhita hau, ka taea te wehewehe ki te mahi kotahi me te mahi takirua i runga i te momo mahi. He puna rango tautuhi anō tō te hua mahi-kotahi, he mahi tautuhi aunoa mō te ngaronga o te hau, arā, ina kei raro te piston rango (te diaphragm rānei) i te mahi a te puna, ka panaia te tokotoko pana rango ki te tūranga tīmatanga o te rango (te tūranga taketake o te whiu). Kāore he puna whakahoki o te rango mahi-kotahi, ā, me whakawhirinaki te nekehanga whakamua me te hokinga o te tokotoko pana ki te tūranga tomo me te putanga o te pūtake hau rango. Ina tomo te pūtake hau ki te rūma o runga o te piston, ka neke te tokotoko pana ki raro. Ina tomo te pūtake hau mā te kōhao o raro o te piston, ka neke te tokotoko pana ki runga. Nā te mea kāore he puna tautuhi anō, he nui ake te pana o te rango mahi-kotahi i te rango mahi-kotahi he rite te whānui, engari kāore he mahi tautuhi aunoa. He mārama, nā ngā tūranga whakauru rerekē ka neke te pūtā ki ngā ahunga rerekē. Ina kei roto te tūranga tomo hau i te kōhao o muri o te tokotoko pana, ka neke te tokotoko pana e te whakaurunga hau, ka kiia tēnei ara ko te rango pai. I te taha kotahi o te tokotoko pana, ka hoki whakamuri te tokotoko pana i te taha o te kaihoroi hau, e kiia nei ko te rango tauhohenga. Nā te mea he nui te hiahia ki te ngaro i te mahi tiaki hau, ka whakamahia he rango kotahi te mahi.
✧ Ngā Tawhā o te Takirere Ao Whakahaere Āwhina Hau
| Hua | Mana Whakahaere Āhuarangi Ārai Porowhita |
| Diameter ingoa | NPS 1/2”. 1”, 1 1/4”, 1 1/2”, 2”, 3”, 4”, 6”, 8”, 10”, 12”, 14”, 16”, 18”, 20” 24”, 28”, 32”, 36”, 40”, 48” |
| Diameter ingoa | Akomanga 150LB, 300LB, 600LB, 900LB, 1500LB, 2500LB. |
| Whakamutua te Hononga | He mea whatu (RF, RTJ, FF), he mea whakarewa. |
| Te mahi | Pūwhakaoho Hau |
| Ngā Rauemi | A216 WCB, WC6, WC9, A352 LCB, A351 CF8, CF8M, CF3, CF3M, A995 4A, A995 5A, A995 6A, Koranu 20, Monel, Inconel, Hastelloy, Parahi Konumohe me ētahi atu koranu motuhake. A105, LF2, F5, F11, F22, A182 F304 (L), F316 (L), F347, F321, F51, Koranu 20, Monel, Inconel, Hastelloy |
| Hanganga | Tīwiri me te Ioka o Waho (OS&Y), Kakau e Piki Ana, Pōnati Whakapūmau, Pōnati Hiri Pēhanga rānei |
| Hoahoa me te Kaihanga | BS 1873, API 623 |
| Kanohi ki te Kanohi | ASME B16.10 |
| Whakamutua te Hononga | ASME B16.5 (RF me te RTJ) |
| ASME B16.25 (BW) | |
| Whakamātautau me te Tirotiro | API 598 |
| Ētahi atu | NACE MR-0175, NACE MR-0103, ISO 15848, API624 |
| Kei te wātea hoki mō ia | PT, UT, RT, MT. |
✧ Ngā Āhuatanga o te Takirere Ao Whakahaere Āwhina Hau
1. Ko te hanganga o te tinana takirere he nohoanga kotahi, he ringaringa, he nohoanga takirua (e rua ngā ara-toru) e toru ngā momo, he hiri tākai me te hiri pupuhi e rua ngā momo, ko te tohu pēhanga ingoa o te hua PN10, 16, 40, 64 e whā ngā momo, ko te whānuitanga o te tauine ingoa DN20 ~ 200mm. Ko te pāmahana wai e tika ana mai i -60 ki te 450℃. Ko te taumata turuturu he akomanga IV, he akomanga VI rānei. Ko te āhuatanga rere he whakatuwheratanga tere;
2. e honoa ana te pūwhakaoho puna-maha me te tikanga whakatikatika ki ngā pou e toru, ka taea te whakaiti i te teitei katoa mā te 30% pea, ā, ka taea te whakaiti i te taumaha mā te 30% pea;
3. Kua hangaia te tinana takirere kia rite ki te mātāpono o te miihini wai ki roto i te hongere rere ātete iti, ka piki ake te tauwehenga rere whakatauranga mā te 30%;
4. E rua ngā momo hiri o te wāhanga hiri o roto o te takirere: he hiri piripono, he hiri ngohengohe, he hiri piripono mō te mata o te karāhe sima, he hiri ngohengohe mō ngā rauemi ngohengohe, he pai te mahi hiri ina kati;
5. te whakataurite i ngā ā-roto o te takirere, te whakapai ake i te rerekētanga pēhanga e whakaaetia ana o te takirere tapahi;
6. Ka hanga e te hiri o te pupuhi he hiri katoa i runga i te kakau takirere e neke ana, e ārai ana i te tūponotanga o te turuturu o te reo;
7, he nui te kaha whakahaere o te piston actuator, he nui te rerekētanga pēhanga e whakamahia ana.
✧ Ngā Painga o te Takirere Ao Whakahaere Āwhina Hau
I te wā e whakatuwheratia ana, e kati ana hoki te takirere porowhita maitai hanga, nā te mea he iti ake te waku i waenga i te kōpae me te mata hiri o te tinana takirere i tērā o te takirere kuaha, ka ātete ki te kakahu.
He poto noa te whiu whakatuwheratanga, te whiu kati rānei o te kakau takirere, ā, he tino pono te mahi tapahi, ā, nā te mea he rite te huringa o te putanga nohoanga takirere ki te whiu o te kōpae takirere, he tino pai mō te whakatikatika i te tere rere. Nō reira, he tino pai tēnei momo takirere mō te tapahi, te whakahaere rānei me te whakawhāiti.
✧ Ratonga Whai Muri i te Hoko
Hei kaihokohoko ngaio mō te Pneumatic Actuator Control Gate Valve, ka oati mātou ki te whakarato ratonga whai muri i te hoko kounga teitei ki ngā kiritaki, tae atu ki ēnei:
1. Hoatu he aratohu whakamahinga hua me ngā whakaaro tiaki.
2. Mō ngā hapa i puta mai i ngā raruraru kounga hua, ka oati mātou ki te whakarato tautoko hangarau me te rapurongoā i roto i te wā poto rawa.
3. Haunga ngā kino i puta mai i te whakamahinga noa, ka whakaratohia e mātou he ratonga whakatika me te whakakapinga kore utu.
4. Ka oati mātou ki te whakautu wawe ki ngā hiahia ratonga kiritaki i roto i te wā whakamana hua.
5. Ka whakaratohia e mātou he tautoko hangarau mō te wā roa, he ratonga tohutohu ipurangi me te whakangungu. Ko tā mātou whāinga he whakarato i te wheako ratonga pai rawa atu ki ngā kiritaki, me te whakangawari ake i te wheako o ngā kiritaki.
