TeMōta Nekehanga Pai (PDM), e mōhiotia ana hoki ko te"motuka paru"he poka whakararo nuitaputapu kerie whakamahia ana i roto i ngā mahi hinu me te hau. Ka hurihia te pūngao waipēhi mai i te wai keri (paru) hei hurihanga ā-pūkaha hei akiaki i te mata keri, kia nui ai mō te keri ahunga, ngā puna whakapae, me te huri taha.
I. Hanganga me te Mātāpono Mahi
1. Ngā Wāhanga Matua
Takirere ĀpitiKa taea te rere o te wai i te wā e takahi ana hei ārai i ngā pikinga pēhanga.
Wāhanga Mōta: Te waeine mana matua, kei roto ko tepūmau(ngā ngongo kua whakakikoruatia ki te elastomer) merotor(tīwiri whakarewa porowhita).
Hononga Ao WhānuiKa huri i te nekehanga rerekē o te rotor ki te hurihanga porowhita.
Pou taraiwa: Tukuna te taipana ki te mata keri, e tautokona ana e ngā huihuinga peera mō ngā kawenga axial/radial.
2.Kaupapa Mahi
Ka tomo te wai keri pēhanga teitei ki te motuka, ka akiaki i te rotor ki te huri i roto i te stator i roto i te nekehanga aorangi (hurihuri + hurihanga).
Ka whakawhitihia te hurihanga o te rotor mā te hononga whānui me te rakau taraiwa ki te mata wiri.
Te tere rere (Q) me te RPM (N):
N=qQ×ηv'
QTe tere rere (L/s)
qTe nekehanga mō ia hurihanga (L/hurihanga)
ηv: Te whai huatanga o te rōrahi (te nuinga o te 80–90%)
II. Te Whakarōpūtanga o ngā PDM
1. Nā te Hoahoa
PDM Pūrua-Kotahi (whiringa 1:2)Tere tere, taipana iti (hei tauira, mō te keri poka angiangi).
PDM Maha-Pūrua (hei tauira, whirihoranga 5:6)Tere iti, taipana teitei (hei tauira, mō ngā porowhita whānui, ngā hanganga mārō rānei).
2. Mā te Tono
PDM Paerewa: Whakamahia i roto i ngā puna poutū, ngā puna ahunga māmā rānei.
Whare PDM o BentHe koki piko pumau (hei tauira, 1°, 1.5°, 2°) hei whakahaere i te ahunga.
Pūwero Ranu-PDM: Ka whakakotahi i te RPM teitei (tāpore) me te taipana teitei (PDM).
III. Ngā Tawhā Mahi Matua
| Tawhā | Whakaahuatanga |
| Tere (RPM) | Ko te tikanga he 100–300 RPM, e whakawhirinaki ana ki te hoahoa o te pū me te tere rere. |
| Taipana (N·m) | Ka piki ake me ngā wāhanga motuka (ka roa ake te stator = ka nui ake te taipana). |
| Te hekenga o te pēhanga | Te Whakahaere ΔP: 2–5 MPa; ka kino pea te elastomer stator i te pēhanga nui rawa. |
| Tepe Mahana | Ngā pūmau paerewa: 120–150°C; ngā pūmau pāmahana-tiketike (hei tauira, FKM): 180°C+. |
| Hototahitanga o te Moka | Ka mahi tahi me ngā mata PDC, ngā koeko roera, me ētahi atu (me tutuki ngā whakaritenga RPM/taipana). |
IV. Kōwhiringa me ngā Whakamahinga
1. Ngā Paearu Kōwhiri
Te Pakari o te HangangaKo ngā hanganga mārō e hiahia ana ki ngā PDM maha-rōpū kia nui ake ai te taipana.
Ara o te PunaMe whai PDM whare-piko ngā puna ahunga.
Wai KeriMe whakamahi ngā paru hinu i ngā elastomers ātete-hinu (hei tauira, HNBR); me whakamahi ngā taiao H₂S i ngā rauemi kawa-mahi.
2. Ngā Whakamahinga Noa
Te Keri WhakapaeWhakamahia me ngā pūnaha MWD/LWD mō te urungi tika.
Te Ara Whakamuri me te Whakahou: Ka huri i muri i te putanga o te anga.
Ngā Puna Hōhonu/Tino Hōhonu: E hiahiatia ana ngā pūmau pāmahana teitei me ngā rauemi pakari.
V. Ngā Rahunga Noa me te Tiaki
| Tohu | Take Pea | Otinga |
| Te Tere o te Whakahekenga | Te pakaru o te stator/te ngoikore o te elastomer | Whakakapia te stator; tirohia ngā paru totoka. |
| Kāore he Putanga Taipana | Te rahunga o te hononga/te pou taraiwa whānui | Tirohia, ā, whakakapia ngā wāhanga kua pakaru. |
| turuturu | Te rahunga o te hiri/ngā hononga wetekina | Whakakapia ngā hiri; whakaukia kia rite ki ngā whakaritenga API. |
| Te wiri nui rawa | Te kore taurite o te rotor, te kore taurite rānei o te moka | Tirohia te tika o te rotor; whakapaitia te mata. |
VI. Ngā Auahatanga o te Ao
1.Ngā PDM AtamaiNgā pūoko whakauru mō te aroturuki i te taipana/pāmahana/wiri i te wā tūturu.
2.Ngā Rauemi MatatauNgā rotor pania nano, ngā elastomer 200°C+.
3.Ngā Pūnaha RanuNgā huinga PDM + tāpine mō ngā hanganga uaua.
Ka taea e Landrill te whakarato i ngā momo motuka paru (PDMS) me te kounga pai rawa atu. Mena kei teKi te hiahia koe ki ēnei mea, tēnā whakapā mai ki a mātou. Ka taea e mātou te tuku atu i ētahi atu kōrero.
Junnie Liu
Waea Pūkoro/Whatsapp:+0086-158 7765 8727
Email: landrill@landrilltools.com
Wā tuku: Paenga-whāwhā-03-2025
5-1203, Rohe Ahumahi o Dahua, Nama 2 o Yunshui Road, Rohe whanaketanga hangarau-teitei, Xi'an, 710065, Haina
86-13609153141
