He aha te hiri miihini o raro o te elastomer?

He aha te hiri miihini o raro o te elastomer

He tangi a te elastomerhiri mīhinihe taputapu hiri mata-pito tino motuhake i hangaia mōtaputapu hurihuri, ko te nuinga he papu tohanga, he whakaranu, he whakaohooho. He rerekē ki ngā hiri pana tuku iho e whakawhirinaki ana ki ngā mowhiti-O hihiri, ki ngā mowhiti-V rānei e reti ana i te taha o te pou, ka whakamahia e tēnei hoahoa he ngongo elastomeric piko—te raro—hei hono i te āputa i waenga i te pou hurihuri me te mata hiri tuatahi. Mā tēnei hoahoa ka whakakorea te hiahia mō tētahi hiri tuarua reti, ā, ka whakaitihia te wiri o te pou me ngā hapa tiaki e pā ana.

Ko ngā hiri raro elastomer paerewa e hangaia ana mō ngā diameter o te pou mai i te 10 mm ki te 100 mm, ahakoa he āhua ritenga anō mō ​​ngā taputapu ahumahi motuhake. Mā te whakakotahi i te mahi hiri tuarua, te tuku taraiwa hurihuri, me te ngāwari o te tuaka ki roto i te wāhanga polymeric kotahi, ka taea e ngā kaihangarau te whakatutuki i tētahi tikanga hiri pakari, kiato, me te tino whai hua e tika ana mō te whānuitanga o ngā pūnaha whakahaere wai pēhanga iti-ki-waenga.

Ngā wāhanga matua me te kaupapa mahi

Ko te hanganga o te hiri ā-ringa o raro i te elastomer e aro ana ki ngā wāhanga matua e whā: te mowhiti tuatahi hurihuri, te mowhiti hononga tūmau, te elastomer tonu, me te pūnaha puna ā-ringa. Ko ngā mowhiti tuatahi me ngā mowhiti hononga te atanga hiri tuatahi, e honoa ana ki te papatahi e inehia ana i roto i ngā roopu mārama helium hei whakarite i te ōritetanga moroiti. Ko ēnei mata ka wehea e te kiriata wai waiora i hangaia e te reo e papuhia ana.

Ko te puna mīhini—he maha ngā wā he puna koiri kotahi, he pakari—kei muri i te mata tuatahi. Mā tēnei ka whakarato i te kaha kati e tika ana hei pupuri i te pa o te mata i te wā e tīmata ana ngā taputapu, e whakaweto ana, me ngā wā iti o te pēhanga pūnaha. Nā te mea he maha ngā wā ka noho te puna ki waho o te wai e papuhia ana, e tiakina ana rānei e te waikura, he iti ake te tūponotanga ki te aukati, ki te waikura rānei, ki te whakataurite ki ngā puna iti maha e kitea ana i roto i ētahi hoahoa hiri pana.

Te āhua o te hiri tuarua me te ngāwari o te raro

Ko te āhuatanga matua o tēnei kāwai hiri ko te mahi takirua o te raro. I te atanga o te pou, he pai te urunga o te pito hiku o te raro elastomer. Ka mahi tēnei pupuri pūmau hei hiri tuarua ki te pou, ka ārai i te taha wai, me te tuku i te taipana hurihuri ki te mata hiri tuatahi me te kore e hiahiatia he tīwiri whakatū, he pine taraiwa rānei.

I te taha tuaka, ka whakaratohia e ngā piko o te raro he ngāwari nui. I te mea ka pakaru ngā mata hiri tuatahi i roto i ngā mano hāora mahi, ka toro atu te raro kia mau tonu te pa. Ka taea e te raro elastomer paerewa te whakakapi i te 2.0 mm o te takaro tuaka, te pakaru mata rānei. Hei tāpiri, ka mimitihia e tēnei ngāwari te hē o te koki me te rere o te pou, kia mau tonu ai ngā mata tuatahi kia rite, kia mau tonu ai te kiriata waiora i raro i ngā āhuatanga mahi hihiri.

He aha te Hiranga o ngā Hiri Ā-ringa o te Elastomer Bellow

Ko te hiranga ā-ahumahi o ngā hiri miihini o raro o te elastomer e ahu mai ana i tōna kaha ahurei ki te whakatau i ngā take pono pumau e pā ana ki ngā hoahoa mowhiti-O hihiri. I roto i ngā taiao whakahaere wai, he rite tonu te pono o ngā taputapu hurihuri ki te pono o ōna hiri pou. Ka arohia e ngā hiri o raro o te elastomer ngā take pūtake o te pakaru wawe o te hiri, ka puta tika ki te roa o te wā mahi me te whakaiti i ngā whakapaunga tiaki.

Nā te mea ka panaia e ēnei hiri te mata hurihuri i roto i te waku pūmau o te raro o te pou, ka whakakorea e rātou te āhuatanga o te wiri o te pou. Ka puta te wiri ina paheke haere tonu te mowhiti-O hihiri ki mua, ki muri i te pou nā te wiri, te kakahu rānei o te mata, ā, ka mutu ka keri te pou, te ringaringa rānei. Mā te tango i tēnei aratau rahunga, ka karohia e ngā whare te tukanga utu nui me te roa o te whakakapi, te mahi anō rānei i ngā pou papu.

Te pānga ki te whakahaere turuturu

Ko te mana whakahaere turuturu o ngā hiri miihini e whakawhirinaki ana ki te pupuri i te hononga korekore i waenga i ngā mata matua. Ko ngā hiri pana tuku iho he ngāwari ki te "whakairi," he āhuatanga ka mau te mowhiti-O hihiri ki te pou na te puranga paru, te hanganga unahi, te wiri ā-rohe rānei. Ina puta te whakairi, kāore e taea e te puna o roto te pana i te mata matua ki mua hei utu mo te pakaru, ka hua ake he turuturu kino.

Kāore ngā hiri o raro elastomer e ārai i te whakairinga nā te mea he pūmau te hiri tuarua e pā ana ki te pou. Mā te mahi piko o raro ka taea tonu te whakauru i te kakahu o te mata me te nekehanga o te pou me te kore e hiahiatia he wāhanga kia paheke. I roto i ngā pūnaha kua whakaritea tika e mahi ana i roto i ngā tawhā kua tohua, ka mau tonu te hoahoa i ngā rerenga rerenga me ngā reiti turuturu i raro i te 0.1 mL/haora, me te whakarite kia tutuki i ngā ture taiao me te haumaru pakari.

Ngā tono noa me ngā tauira whakamahinga

He whānuitia ēnei hiri i roto i ngā ahumahi e hiahia ana kia tino pono i raro i ngā tawhā whakahaere ngāwari. Koinei te whiringa paerewa mōte maimoatanga wai me te wai para o te tāone, ngā papu tohanga HVAC, ngā pūnaha tātari puna kaukau me te puna kaukau, me te tukatuka kai me te inu ina hiahiatia he hototahi matū ngawari. Nā te kaha o te āhua, he tino pai mō ngā wai ehara i te Newtonian, ngā pāpāho rānei kei roto ngā matūriki.

Nā te mea kāore he hiri tuarua e nekeneke ana hei ārai, ka taea e ngā hiri o raro o te elastomer te whakahaere pai i ngā wai me ngā totoka i whakatārewatia tae atu ki te 10% te taumaha, mena ka hangaia ngā mata hiri tuatahi mai i ngā rauemi mārō pēnei i te Silicon Carbide, te Tungsten Carbide rānei. Nā tēnei kaha ki te whakahaere paru, he mea nui ēnei i roto i ngā papu whakauru wai mata me ngā pūnaha whakamakuku ahuwhenua i ngā wāhi kāore e taea te whakamana i te parakore o te wai.

Te Whakataurite i ngā Hiri Ā-ringa o te Elastomer Bellow ki ētahi atu Hiri

Ko te tautuhi i te hiri miihini tika me mārama ki ngā taupatupatu mahi i waenga i ngā hangarau hiri rerekē. Ko ngā hiri raro elastomer kei waenganui i ngā hiri pana iti te utu, he nui te tiaki me ngā hiri raro whakarewa utu nui, he tino mahi.

Ahakoa he nui ngā painga o ēnei hiri i ngā hiri pana O-ringi paerewa e pā ana ki te pono me te tiaki i te pou, he herenga ā-tinana ēnei e ngā herenga ā-tinana o ngā rauemi elastomeric i hangaia ai. He mea nui te aromatawai i ēnei rerekētanga mō ngā miihini e whai kawenga ana ki te arotau i te pono o te tipu me te whakahaere i ngā tahua hoko.

Ngā rerekētanga mahi matua

Ko te rerekētanga matua o te mahi i waenga i ngā momo hiri kei roto i tā rātou urupare ki ngā mahi a te pou me ngā āhuatanga tukanga tino kino. He iti te utu o ngā hiri pana engari he ngāwari ki te whakairi me te wiri. Ko ngā hiri o raro whakarewa kua whakarewahia ki te taha, i hangaia mai i ngā koranu pēnei i a Hastelloy, Inconel rānei, ka whakakore i te wiri, ā, ka taea te tu atu i ngā pāmahana tino kino (he maha ngā wā ka neke atu i te 400°C), engari he utu whakapaipai ka tekau ki te rua tekau ngā wā teitei ake i ngā momo elastomeric.

E ai ki te whakaaturanga i roto i te whārite whakatairite, ka whakaratohia e ngā hiri raro elastomer ngā painga whakahaere o te hoahoa raro kore-whakaoho me te kore he utu whakapaipai nui e rite ana ki ngā raro whakarewa, ka waiho hei whiringa pai rawa atu mō te nuinga o ngā tono whakawhiti wai paerewa.

Te pēhanga, te pāmahana, me te hototahitanga matū

Ko te anga mahi o te hiri o raro elastomer e tino whakatauhia ana e te hanganga polymer o raro. Ko te Nitrile Rubber (NBR) te paerewa mō te wai me ngā hinu ngawari, e tuku ana i te pāmahana mahi tonu mōrahi o te 90°C. Ka whakawhānuihia e te Ethylene Propylene Diene Monomer (EPDM) tēnei paepae ki te 120°C, ā, he ātete pai ki te wai wera, te mamaoa, me te kawakore ngawari, ahakoa ka tere te pirau i te aroaro o ngā wai kei roto i te hinu.

Mō ngā matū kaha ake, mō ngā pāmahana teitei ake rānei, ka whakamahia ngā elastomers Fluorocarbon (FKM/Viton), ka pana i te rohe wera ki te 200°C pea. He mea nui anō hoki ngā herenga pēhanga; nā te mea he polymer ngāwari te raro elastomer, ka ngawari ki te pupuhi, ki te whakaputa rānei i raro i te pēhanga pūnaha teitei. Nō reira, ko te nuinga o ngā hiri raro elastomer kāore i te tautokona ka whakatauria mō ngā pēhanga mahi mōrahi i waenga i te 12 me te 16 pae (1.2 ki te 1.6 MPa). Ki te neke atu i ēnei rohe, me huri ki tētahi hoahoa hiri taurite, ki tētahi raro whakarewa rānei.

Ngā Take Kōwhiringa, Tāutanga, me te Whakahaere

Ko te whakatakotoranga angitu o te hiri miihini elastomer i raro i te hiri miihini e whakawhirinaki nui ana ki ngā tikanga whiriwhiri pakari me ngā paerewa tāutanga tino tika. Ahakoa te hiri tino tika te hanga, ka pakaru wawe tonu mēnā ka nui ake ngā tawhā wai tukanga i ngā whakaritenga rauemi, mēnā rānei ka warewarehia ngā mahi pai miihini i te wā huihuinga.

Ngā Kaihangarau mengā tohunga tiakime whai i te whakakapinga hiri hei tikanga tino whakahaeretia, me te aromatawai i ngā rohe pāmahana me te whakarite kia tutuki i te whare papu me te pou ngā paerewa ā-ahu me te mutunga mata.

Me pēhea te aromatawai i te wai, te pāmahana, me te pēhanga

Ko te aromatawai i ngā tawhā tukanga me tatau i te tauwehenga PV (Pressure-Velocity), e tohu ana i te wera waku e puta ana i ngā mata hiri. Mō te hiri elastomer paerewa e whakamahi ana i te karāpeti waro ki ngā mata Konumohe Waikura (Uku), ko te rohe mahi he tata ki te 10 ki te 15 MPa·m/s. Mena ka whakahaerehia te papu i ngā tere teitei, i ngā pēhanga teitei rānei e neke atu ana i tēnei rohe PV, ka mimiti te kiriata wai, ka arahi ki te rere maroke me te tere o te hekenga wera o te elastomer.

Me whai whakaaro hoki te aromatawai wai ki ngā āhua rangitahi. Tērā pea ka tino waikura te wai e kore e kino i te 20°C ki te elastomer kua whiriwhiria i te 80°C. Hei tāpiri, ka taea e ngā wai e tioata ana i te whakamatao, i te tūponotanga rānei ki te hau te whakau i te wai i te wā e kati ana te papu, ka haehae i te polymer ina tīmata anō te taputapu. I roto i ēnei āhuatanga, me whakahaere pea te taiao mā te tinei me te tango wai.

Ngā tikanga tāutanga me ngā momo rahunga noa

Ko ngā tikanga tāutanga e whakatau tika ana i te roa o te ora o te hiri.me kore he pūwero i te kakau papu, ngā karawarawa, me ngā taha koi ka taea te tapahi i te diameter o roto o te pu i te wā e whakaurua ana. Ko ngā paerewa ahumahi e whakatau ana i te mutunga o te mata o te rakau i roto i te awhe Ra 0.8 ki te 1.2 µm mō te hiri pateko me te tuku taipana tino pai.

Ko tētahi momo rahunga noa ko te haehae hurihuri o te raro, he maha ngā wā ka puta mai i te whakahinuhinu koretake i te wā huihuinga. Me whakamahi ngā tohunga hangarau i ngā hinu whakahinuhinu e hototahi ana ki te elastomer motuhake; hei tauira, mā te paninga o te hinu hinu ki te raro EPDM ka pupuhi te rapa, ka ngawari, ā, ka pakaru i raro i te taipana hurihuri. Me whakamahi ngā hinu whakahinuhinu silicone kua whakaaetia, te wai hopi noa rānei kia tika ai te nohoanga o te raro me te kore e takahuri.

Ngā paerewa, ngā herenga, me te tohu a te kaiwhakarato

Hei whakarite i te whakawhitiwhiti me te pono o te mahi, me tohu e ngā kaihoko ngā hiri e rite ana ki ngā paerewa ā-ahu kua whakaaetia, inā koa ko te EN 12756 (ko te DIN 24960 i mua). Mā te piri ki ēnei paerewa ka oati ka uru te hiri ki roto i ngā pouaka whakakī papu paerewa, me te kore e hiahiatia he miihini ritenga, he pereti repe motuhake rānei.

He mea nui anō hoki te tohu mātauranga a te kaiwhakarato.Ngā kaihoko ahumahime whakahau kia whiwhi ngā kaihanga hiri i te tiwhikete ISO 9001, ā, ka taea hoki te whakarato i te whai i ngā rauemi mō ngā elastomers me ngā rauemi mata. Ko ngā kaihanga kounga teitei te tikanga e pupuri ana i ngā reiti hapa hangahanga i raro iho i te 0.5%. Mā te tono raraunga whakahaere tukanga tatauranga (SPC) mō te papatahi o te mata me te porowhita i raro iho ka taea te tiaki atu i te whiwhinga o ngā wāhanga iti iho i te paerewa.

Me pēhea te whakatau a ngā kaihoko

Ko te hoko i ngā hiri miihini elastomer i raro i te mīhini me whai taurite rautaki i waenga i ngā utu ā-wāhanga me te pono o te mahi mō te wā roa. Ahakoa e whakaarohia ana ēnei hiri he taonga pau, ko te whakaaro ki a rātou he taonga iti te utu ka arahi ki te roa o te wā tiaki me te pikinga o te utu katoa o te mana (TCO).

Me arotake e ngā kaihoko ngā hiahia motuhake o tā rātou waka taputapu hurihuri, me te whakatū i ngā paearu hoko e whakatairanga ana i te Wā Waenga i waenganui i ngā Rahunga (MTBF) i runga i ngā penapena iti i roto i ngā whakapaunga whakapaipai tuatahi. Mā te anga whakatau hanganga ka whakarite kia rite ngā whakaritenga hiri ki ngā whāinga pono o te tipu.

Ngā paearu utu hoko me te huringa ora

Ko te utu tuatahi mō te hoko i tētahi hiri elastomer bellow e whakawhirinaki ana ki te rahinga me te whirihoranga rauemi. Ko ngā hiri NBR/Waro/Uku paerewa e hokona ana i roto i ngā rahinga nui (Ngā Rahinga Ota Iti rawa o te 100 ki te 500 waeine) ka taea te utu mai i te $10 ki te $50 ia waeine. Heoi, mā te whakapai ake ki ngā rauemi mata kounga teitei pērā i te Silicon Carbide (SiC) te Tungsten Carbide (TC) rānei hei ārai i te kakahu whakakoi ka piki ake te utu o mua mā te 30% ki te 50%.

E ai ki te tātai utu huringa ora, ko te pikinga ngawari o te utu hoko tuatahi mō ngā rauemi mata mārō ake me ngā elastomer pakari ake ka whakamāramahia e te toronga nui o te MTBF.

Ngā Whakaaro Matua

• Ko ngā whakatau me ngā take tino nui mō te Elastomer Bellow Mechanical Seal
• Ngā whakaritenga, ngā whakaritenga, me ngā arowhai mōrearea e tika ana kia whakamanahia i mua i tō whakaae
• Ngā mahi whai muri me ngā whakatūpato ka taea e ngā kaipānui te tono tonu

Ngā Pātai Auau

He aha te whakamahinga o te hiri ā-ringa o raro o te elastomer?

Ka hiritia ngā taputapu hurihuri pēnei i ngā papu toriti, ngā mīhini whakaranu, me ngā mīhini whakaoho, ko te nuinga i roto i ngā ratonga pēhanga iti-ki-waenga e hiahiatia ana te whakahaere pono o te turuturu me te ngāwari o te tiaki.

He aha te rerekētanga o te hiri raro elastomer i te hiri pana?

He raro elastomer ngāwari tōna e whakamahia ana, kaua ki te mowhiti-O tuarua e reti ana, e āwhina ana ki te ārai i te ngau o te pou, e whakaiti ana i te mōrearea o te whakairi, e whakahaere māmā ake ana hoki i ngā wai paru, wai whakaene rānei.

He aha ngā painga matua o ngā hiri ā-ringa elastomer i raro i te mata?

He hoahoa kiato, he iti ake ngā wāhanga hiri tuarua e neke ana, he pai te whakatikatika i te pakaru, ā, he pai ake te tiaki i te turuturu mai i te piri o te mowhiti-O ki te kakau.

Ko ēhea ngā ahumahi e whakamahi ana i ngā hiri o raro elastomer?

E whakamahia whānuitia ana ēnei i roto i te maimoatanga wai, te tukatuka matū, ngā pūnaha moana, te penupenu me te pepa, ngā tipu hiko, me te tiaki papu ahumahi whānui.

Ka taea e Victor Seals te tuku i ngā hiri raro elastomer whakakapinga mō ngā papu OEM?

Āe. Ka whakarato a Victor Seals i ngā whakakapinga elastomer bellow me ngā whakakapinga hototahi-OEM mō ngā waitohu pēnei i a Grundfos, Flygt, Alfa Laval, IMO, Lowara, me Allweiler hei tiaki me te whakatika.