Takirere keti poro waipēhi DN400 PN25

1. Whakaahuatanga me ngā Āhuatanga Matua

Ko te Takirere Keti Weri Waipēhi he takirere nekehanga rārangi kei reira ka whakaarahia, ka whakahekehia rānei he kōpae (keti) āhua-weri e te kaiwhakaoho waipēhi hei whakahaere i te rere o te wai.

Ngā Āhuatanga Matua mō tēnei rahi me tēnei akomanga:

• Hoahoa Pūngao Katoa: Ka ōrite te diameter o roto ki te paipa (DN400), ka iti rawa te hekenga pēhanga ina tuwhera katoa, ā, ka taea te whakakī i te paipa.
• Rere Ahunga-rua: He pai mō te rere i ngā taha e rua.
• Te Kākano e Piki Ake Ana: Ka piki ake te kākano i te wā e tuwhera ana te takirere, e whakaatu ana i te tūranga o te takirere.
• Hiritanga Whakarewa-ki-Whakarewa: Ko te tikanga he mowhiti poro me te nohoanga he mata mārō (hei tauira, me te Stellite) hei ātete ki te horo me te kakahu.
• Hanganga Pakari: I hangaia kia tu atu ki ngā pēhanga me ngā kaha teitei, ka hua ake he tinana taumaha, he pakari hoki, he mea hanga i te nuinga o te wā he maitai whakarewa, he maitai hanga rānei.

2. Ngā Wāhanga Matua

1. Tinana: Ko te hanganga matua e pupuri ana i te pēhanga, he mea hanga i te maitai waro (WCB) te maitai kowiri tira rānei (CF8M/316SS). Ko ngā pito whai parirau (hei tauira, PN25/ASME B16.5 Akomanga 150) he paerewa mō te DN400.
2. Pōtae: He mea whakapuru ki te tinana, hei pupuri i te kakau, hei whakarato hoki i te rohe pēhanga. He maha ngā wā ka whakamahia he pōtae roa hei whakamahana.
3. Wēti (Kūaha): Ko te wāhanga hiri matua. Mō te PN25, he mea noa te Wēti Ngāwari. He tapahi, he awaawa rānei kei tōna taha e āhei ai te wēti ki te piko paku, hei whakapai ake i te hiri me te utu mō ngā huringa iti o te tūnga nohoanga nā te whānui wera, te ahotea paipa rānei.
4. Kākano: He rakau miro kaha-teitei (hei tauira, SS420, 17-4PH Kowiri tira rānei) e tuku ana i te kaha mai i te kaiwhakaoho ki te poro.
5. Ngā Mowhiti Nohoanga: He mowhiti mata mārō kua pēhia, kua whakapirihia rānei ki roto i te tinana hei hiri i te poro. Mā ēnei ka hangaia he ārai piri.
6. Te Tākai: He hiri (he maha ngā wā ka whakamahia hei hiri mō ngā pāmahana tiketike) e karapoti ana i te kakau, kei roto i tētahi pouaka whakakī, hei ārai i te turuturu ki te taiao.
7. Pūwhakaoho Waipēhi: He pūwhakaoho momo piston, he pūwhakaoho scotch yoke rānei, e whakakahangia ana e te pēhanga waipēhi (he hinu te nuinga). Ka whakarato i te taipana/pana teitei e hiahiatia ana hei whakahaere i tētahi takirere DN400 nui ki te pēhanga rerekētanga teitei.

3. Te Mātāpono Mahi

• Te whakatuwheratanga: Ka tukuna te wai waipēhi ki roto i te actuator, ka nekehia te piston. Ka hurihia tēnei nekehanga hei nekehanga hurihuri (scotch yoke) he nekehanga raina rānei (linear piston) e huri ana i te kakau takirere. Ka miro te kakau ki roto i te wedge, ka hiki katoa ki roto i te taupoki, ka kore e araia te ara rere.
• Katia: Ka haria te wai waipēhi ki te taha kē o te pūwhakaoho, ka hurihia te nekehanga. Ka huri te kakau, ka pana i te poro ki raro ki te tūranga kati, ka pēhia kia kaha ki ngā mowhiti nohoanga e rua, ka hanga he hiri.

Tuhipoka Matua: Kua hangaia tēnei takirere mō te wehe (tuwhera katoa, kati katoa rānei). Kaua rawa e whakamahia mō te whakawhāiti, te whakahaere rere rānei, nā te mea ka puta te wiri, te korokoro, me te tere o te memeha o te weri me ngā nohoanga.

4. Ngā Whakamahinga Noa

Nā tōna rahi me te pēhanga, e whakamahia ana tēnei takirere i roto i ngā tono ahumahi uaua:

• Ngā Pūnaha Tuku me te Tohatoha Wai: Te wehe i ngā wāhanga o ngā paipa nunui.
• Ngā Whare Hiko: Ngā pūnaha wai whakamatao, ngā paipa wai whāngai.
• Wai Tukanga Ahumahi: Ngā wheketere ahumahi nui.
• Ngā Whare Whakakore Tote: Ngā raina osmosis whakamuri (RO) pēhanga teitei.
• Te Keri me te Tukatuka Kohuke: Ngā paipa paru (me te whiriwhiri rauemi e tika ana).

5. Ngā Painga me ngā Huakore

6. Ngā Whakaaro Hira mō te Kōwhiringa me te Whakamahinga

• Kōwhiringa Rauemi: Tātaitia ngā rauemi o te tinana/wedge/nohoanga (WCB, WC6, CF8M, me ētahi atu) ki te ratonga wai (wai, waikura, pāmahana).
• Ngā Hononga Mutunga: Kia tino ōrite ngā paerewa o te flange me te mata (RF, RTJ) ki te paipa.
• Wāhanga Mana Waipēhi (HPU): Me whai HPU motuhake te takirere hei whakaputa i te pēhanga waipēhi. Whakaarohia te tere whakahaere, te pēhanga, me te mana whakahaere e hiahiatia ana (ā-rohe/mamao).
• Aratau Haumaru-Hē: Ka taea te tohu i te kaiwhakaoho ko te Tuwhera-Hē (FO), te Kati-Hē (FC), te Tūnga-Hē rānei (FL) i runga i ngā whakaritenga haumaru.
• Takirere Ārai: Mō ngā tono pēhanga teitei, ka tāutahia he takirere ārai iti (hei tauira, DN50) hei whakataurite i te pēhanga puta noa i te poro i mua i te whakatuwheratanga o te takirere matua, hei whakaiti i te taipana whakahaere e hiahiatia ana.

Hei whakarāpopototanga, he taputapu mahi nui, he kaha hoki te Hydraulic Wedge Gate Valve DN400 PN25 hei aukati, hei tīmata rānei i te rere o te wai i roto i ngā paipa pēhanga nui. Nā te mahi waipēhi ka pai mō ngā wāhi wehe motuhake mamao, aunoa rānei.