Kupyolera mu kuyambitsa zofunikira zakuthupi, zofunikira pakupanga, zofunikira zopanga, zofunikira pakuchita, njira zoyesera, zofunikira pakugwiritsa ntchito dongosolo, ndi mgwirizano pakati pa kupanikizika ndi kutentha kwa mankhwala a pulasitiki a pulasitiki ndi njira zoyesera, mukhoza kumvetsetsa kusindikiza kofunikira pulasitiki. ma valve Zofunikira pakuwongolera khalidwe labwino monga kuyesa, kuyesa kwa torque ndi kuyesa mphamvu ya kutopa.M'mawonekedwe a tebulo, zofunikira pakuyesa kusindikiza pampando, kuyesa kusindikiza kwa ma valve, kuyesa mphamvu ya ma valve, kuyesa kwa nthawi yayitali, kuyesa mphamvu ya kutopa ndi torque yogwiritsira ntchito zomwe zimafunikila kuti zigwiritsidwe ntchito pazitsulo za pulasitiki zimafotokozedwa mwachidule.Kupyolera mu zokambirana za mavuto angapo pamiyezo yapadziko lonse lapansi, opanga ndi ogwiritsa ntchito ma valve apulasitiki amadzutsa nkhawa.

Pomwe kuchuluka kwa mapaipi apulasitiki m'madzi otentha ndi ozizira komanso ntchito zamakina opangira mapaipi akuchulukirachulukira, kuwongolera kwabwino kwa mavavu apulasitiki pamapaipi apulasitiki kukukulirakulira.

Chifukwa cha ubwino wa kulemera kwa kuwala, kukana kwa dzimbiri, kusakhala ndi adsorption, kugwirizanitsa ndi mapaipi apulasitiki, ndi moyo wautali wautumiki wa mavavu apulasitiki, mavavu apulasitiki amagwiritsidwa ntchito popereka madzi (makamaka madzi otentha ndi kutentha) ndi madzi ena a mafakitale.Mu dongosolo la mapaipi, ubwino wake wogwiritsira ntchito ndi wosayerekezeka ndi ma valve ena.Pakalipano, popanga ndi kugwiritsa ntchito mavavu apulasitiki apakhomo, palibe njira yodalirika yowawongolera, zomwe zimapangitsa kuti mavavu apulasitiki azikhala osagwirizana ndi madzi ndi madzi ena a mafakitale, zomwe zimapangitsa kuti kutsekedwa kwaulesi ndi kutayikira kwakukulu mu ntchito zaumisiri.Adapanga mawu oti mavavu apulasitiki sangathe kugwiritsidwa ntchito, zomwe zimakhudza kukula kwa mapaipi apulasitiki.Miyezo ya dziko langa ya mavavu apulasitiki ikukonzekera, ndipo miyezo yawo yazinthu ndi njira zawo zimapangidwira motsatira miyezo yapadziko lonse lapansi.

Padziko lonse lapansi, mitundu ya mavavu apulasitiki imaphatikizapo mavavu a mpira, mavavu agulugufe, ma valavu owunika, ma valve a diaphragm ndi ma valve a globe.Mawonekedwe akuluakulu ndi ma valve a njira ziwiri, njira zitatu ndi zambiri.The zopangira ndi makamaka ABS,PVC-UPVC-C, PB, PE,PPndi PVDF etc.

Pamiyezo yapadziko lonse lapansi yazinthu zama valve apulasitiki, chofunikira choyamba ndi zida zomwe zimagwiritsidwa ntchito popanga ma valve.Wopanga zopangirazo ayenera kukhala ndi njira yokhotakhota yomwe imakwaniritsa miyezo ya zinthu zamapaipi apulasitiki.Panthawi imodzimodziyo, kuyesa kusindikiza, kuyesa kwa thupi la valve, ndi zonse Kuyesa kwa nthawi yaitali, kuyesa mphamvu ya kutopa ndi torque yogwiritsira ntchito valve zonse zafotokozedwa, ndi moyo wautumiki wa valavu ya pulasitiki yomwe imagwiritsidwa ntchito poyendetsa mafakitale. madzimadzi amapatsidwa kwa zaka 25.

Zofunikira zazikulu zaukadaulo za miyezo yapadziko lonse lapansi

1 Zofunika zakuthupi

Zida za thupi la valve, bonnet ndi bonnet ziyenera kusankhidwa malinga ndi ISO 15493:2003 "Industrial plastic pipe systems-ABS,PVC-Undi PVC-C-Pipe ndi ndondomeko yoyenera -Gawo 1: Mndandanda wa Metric" ndi ISO 15494: 2003 "Industrial Plastic Piping Systems-PB, PE, ndi PP-Pipe ndi Fitting System Specifications-Gawo 1: Metric Series."

2 Zofunikira pakupanga

a) Ngati valavu ili ndi njira imodzi yokha yolowera, iyenera kulembedwa ndi muvi kunja kwa thupi la valve.Vavu yokhala ndi mawonekedwe ofananira iyenera kukhala yoyenera kuyenda kwamadzimadzi anjira ziwiri komanso kudzipatula.

b) Gawo losindikiza limayendetsedwa ndi tsinde la valve kuti litsegule ndi kutseka valve.Iyenera kuyikidwa kumapeto kapena malo aliwonse pakati ndi mikangano kapena ma actuators, ndipo kuthamanga kwamadzimadzi sikungasinthe malo ake.

c) Malinga ndi EN736-3, kutsika pang'ono pabowo la valve kuyenera kukwaniritsa mfundo ziwiri izi:

- Pa malo aliwonse omwe sing'anga imazungulira pa valve, sikuyenera kukhala pansi pa 90% ya mtengo wa DN wa valve;

- Kwa valavu yomwe kapangidwe kake kamayenera kuchepetsa kukula kwa sing'anga yomwe imadutsamo, wopangayo afotokoze zochepa zake zenizeni kudzera mu dzenje.

d) Chisindikizo pakati pa tsinde la valve ndi thupi la valve chiyenera kutsata EN736-3.

e) Pankhani ya kukana kuvala kwa valavu, mapangidwe a valve ayenera kuganizira za moyo wautumiki wa ziwalo zowonongeka, kapena wopanga ayenera kusonyeza mu malangizo ogwiritsira ntchito ndondomeko yosinthira valve yonse.

f) Mayendedwe oyenera a zida zonse zogwiritsira ntchito ma valve ayenera kufika 3m/s.

g) Kuwoneka kuchokera pamwamba pa valavu, chogwirira kapena chogwirira cha valve chiyenera kutseka valavu molunjika.

3 Zofunikira pakupanga

a) Zomwe zidagulidwa ziyenera kukhala zogwirizana ndi malangizo a wopanga ndikukwaniritsa zofunikira zomwe zagulitsidwa.

b) Thupi la valve liyenera kulembedwa ndi code yazinthu zopangira, DN m'mimba mwake, ndi kupanikizika kwadzina PN.

c) Thupi la valve liyenera kulembedwa dzina la wopanga kapena chizindikiro chake.

d) Thupi la valve liyenera kulembedwa ndi tsiku lopanga kapena code.

e) Thupi la ma valve liyenera kulembedwa ndi zizindikiro za malo osiyanasiyana omwe amapanga.

4 Zofunikira pakanthawi kochepa

Kuchita kwakanthawi kochepa ndi chinthu choyendera fakitale muzogulitsa.Amagwiritsidwa ntchito makamaka poyesa kusindikiza mpando wa valve ndi kuyesa kusindikiza kwa thupi la valve.Amagwiritsidwa ntchito poyang'ana ntchito yosindikiza ya valve ya pulasitiki.Zimafunika kuti valavu ya pulasitiki isakhale ndi kutuluka kwamkati (kutuluka kwa mpando wa valve)., Sipayenera kukhala kutuluka kunja (kutuluka kwa thupi la valve).

Kuyesa kusindikiza kwa mpando wa valve ndikutsimikizira momwe ma valve odzipatula amachitira;kuyesa kusindikiza kwa thupi la valavu ndikutsimikizira kutayikira kwa chisindikizo cha valve tsinde ndi chisindikizo cha kumapeto kwa kugwirizana kwa valve.

Njira zolumikizira valavu ya pulasitiki ku dongosolo la mapaipi ndi

Kulumikiza matako kuwotcherera: m'mimba mwake akunja valavu kugwirizana gawo ndi wofanana ndi awiri akunja awiri chitoliro, ndi mapeto a nkhope ya valavu kugwirizana gawo ndi zotsutsana ndi mapeto a chitoliro kwa kuwotcherera;

Kulumikizana kwazitsulo zazitsulo: gawo logwirizanitsa la valve liri mu mawonekedwe a socket, omwe amamangiriridwa ku chitoliro;

Kulumikizana kwa socket ya electrofusion: gawo lolumikizira valavu lili ngati socket yokhala ndi waya wotenthetsera wamagetsi woyikidwa mkati mwake, ndipo ndi kulumikizana kwa electrofusion ndi chitoliro;

Socket hot-melt kugwirizana: gawo lolumikizira valavu lili mu mawonekedwe a socket, ndipo limalumikizidwa ndi chitoliro ndi socket yosungunuka;

Kulumikizana kwazitsulo zazitsulo: Gawo logwirizanitsa valavu liri mu mawonekedwe a socket, omwe amamangiriridwa ndi kutsekedwa ndi chitoliro;

Kulumikizana kwa mphete yosindikizira ya socket: Gawo lolumikizira valavu ndi mtundu wa socket wokhala ndi mphete yosindikizira ya rabara yamkati, yomwe imakhazikika ndikulumikizidwa ndi chitoliro;

Kulumikizana kwa Flange: Gawo lolumikizira valavu lili mu mawonekedwe a flange, omwe amalumikizana ndi flange pa chitoliro;

Kulumikizana kwa ulusi: gawo lolumikizira valavu lili mu mawonekedwe a ulusi, womwe umalumikizidwa ndi ulusi pa chitoliro kapena kuyenerera;

Kulumikizana kwamoyo: Gawo lolumikizira valavu lili munjira yolumikizirana, yomwe imalumikizidwa ndi mapaipi kapena zotengera.

Valavu imatha kukhala ndi njira zolumikizirana zosiyanasiyana nthawi imodzi.

Ubale pakati pa kuthamanga kwa ntchito ndi kutentha

Pamene kutentha kwa ntchito kukuwonjezeka, moyo wautumiki wa mavavu apulasitiki udzafupikitsidwa.Kuti mukhale ndi moyo womwewo wautumiki, m'pofunika kuchepetsa kugwiritsidwa ntchito.