Vavu yomwe imagwiritsidwa ntchito kawirikawiri zinthu zopanda zitsulo zimayang'ana njira yolumikizirana pakati pa chowongolera magetsi ndi valavu iliyonse

Vavu yomwe imagwiritsidwa ntchito kawirikawiri zinthu zopanda zitsulo zimayang'ana njira yolumikizirana pakati pa chowongolera magetsi ndi valavu iliyonse

Ethylene propylene rabara mpando ovotera kutentha osiyanasiyana ndi -28 ¡æ~120¡æ. EPDM imayimira terpolymer ya ethylene, propylene, ndi diene, yomwe imatchedwa EPT Nordell. Kukaniza kwa ozoni kwabwino kwambiri komanso kukana kwanyengo, kuyendetsa bwino kwamagetsi kwamagetsi, kukana bwino kwa ma capacitor a polar ndi ma inorganic media. Choncho, angagwiritsidwe ntchito HVAC makampani, madzi, mankwala ester, mowa, ethylene glycol, etc. Ethylene propylene mphira MIPAWO SIKUYANIKIDWA KUGWIRITSA NTCHITO MU HYDROCARBON organic solvents ndi MAFUTA, chlorinaTED HYDROCARBONS, turpentINE, kapena mafuta ena petroleum.
Vavu yomwe imagwiritsidwa ntchito kwambiri pazinthu zopanda zitsulo
Moni, mphira wa nitrile
Mpando wa mphira wa Nitrile wovotera kutentha ndi -18 ¡ã C mpaka 100 ¡ã C. Amatchedwanso, NITRILE, kapena HYCAR. Ndi zinthu zonse mphira zoyenera madzi, gasi, mafuta ndi mafuta, mafuta (kupatula mafuta ndi zina), mowa ndi ethylene glycol, liquefied mafuta amafuta, propane ndi butane, mafuta mafuta ndi zina zambiri TV. Ilinso ndi kukana kwabwino kwa kuvala komanso kukana kwa deformation. Food grade (FG) nitrile rabara mpando ovotera kutentha osiyanasiyana ndi -18¡æ to 82¡æ. Kapangidwe kake kumagwirizana ndi CFR Standard Part 21, Gawo 177.2600. Itha kugwiritsidwa ntchito mofanana ndi mphira wamba wa nitrile koma imafuna kuvomerezedwa ndi FDA.
Ethylene propylene rabara EPDM
Ethylene propylene mphira mpando ovotera kutentha osiyanasiyana ndi -28¡æ~120¡æ. EPDM imayimira terpolymer ya ethylene, propylene, ndi diene, yomwe imatchedwa EPT Nordell. Kukaniza kwa ozoni kwabwino kwambiri komanso kukana kwanyengo, kuyendetsa bwino kwamagetsi kwamagetsi, kukana bwino kwa ma capacitor a polar ndi ma inorganic media. Choncho, angagwiritsidwe ntchito HVAC makampani, madzi, mankwala ester, mowa, ethylene glycol, etc. Ethylene propylene mphira MIPAWO SIKUYANIKIDWA KUGWIRITSA NTCHITO MU HYDROCARBON organic solvents ndi MAFUTA, chlorinaTED HYDROCARBONS, turpentINE, kapena mafuta ena petroleum.
Chakudya kalasi ethylene propylene mphira mpando ovotera kutentha osiyanasiyana ndi -28¡æ~120¡æ. Kapangidwe kake kumagwirizana ndi CFR Standard Part 21, Gawo 177.2600. Itha kugwiritsidwa ntchito mofanana ndi mphira wamba wa nitrile koma imafuna kuvomerezedwa ndi FDA.
PTFE PTFE
Mpando wa Teflon wovotera kutentha kwapakati ndi -32 ¡ã C mpaka 200 ¡ã C. Kukana kwambiri kutentha kwakukulu ndi dzimbiri za mankhwala. Chifukwa kachulukidwe mkulu wa polytetrafluoroethylene, kwambiri permeability, komanso angalepheretse dzimbiri ambiri mankhwala TV.
TEFLON Conductive NDI TEFLON YOsinthika yomwe imalola kuti pakali pano idutse pamzere kuti CHONSE KUFUFUZA KWA TEFLON. Chifukwa cha ma conductivity ake, conductive polytetrafluoroethylene sangathe kuyesedwa ndi spark magetsi.
Kulimbitsa polyteflon RTFE
RTFE ndi kusinthidwa kwa zinthu za PTFE. Ngakhale kukangana kokwanira kwa PTFE koyera ndikotsika kwambiri (0.02 ~ 0.04), koma kuvala ndikwabwino, komanso chifukwa cha kukwapula kwake kosavuta, zida zamakina osauka, kutsika kwapang'onopang'ono, kusakhazikika bwino kwa mawonekedwe ndi mawonekedwe ena, monga zinthu zokangana zili ndi zabwino. malire. Kusinthidwa kokha, kudzera mu njira ya zinthu zophatikizika kuti zikwaniritse zofunikira zapadera za zida zosindikizira zosagwira ntchito m'mitundu yonse ya moyo, pakuwongolera kukana kwa PTFE, zitha kusakanikirana ndi zinthu zina zosagwira ntchito monga galasi CHIKWANGWANI, kaboni CHIKWANGWANI. , graphite, molybdenum disulfide, ufa wamkuwa ndi mankhwala ena achilengedwe, Ma mesh amapangidwa mu PTFE wosanjikiza kapangidwe kake kuti apititse patsogolo kuuma, kutenthetsa kwamafuta, kukana kukwawa, ndi kukana kuvala.
Fluorine rabara Viton
Kutentha kwake kwa mpando wa rabara wa fluorine ndi -18¡æ~150¡æ. Viton ndi chizindikiro cholembetsedwa cha DuPont Company, ndipo Fluorel ndi chizindikiro cholembetsedwa chofanana ndi rabara ya fluorine ya 3M Company. Nkhaniyi imakhala ndi kutentha kwambiri komanso kukana kwa dzimbiri kwamankhwala. Zoyenera kuzinthu za hydrocarbon, kutsika kochepa komanso kuchuluka kwa ma mineral acid ambiri, koma osati m'ma media am'madzi ndi madzi (kukana madzi osakwanira).
Ultra high molecular weight polyethylene UHMWPE
Mipando ya polyethylene yapamwamba kwambiri ya molekyulu imayikidwa kuchokera ku -32 ¡ã C mpaka 88 ¡ã C. Nkhaniyi imakhala ndi kutentha kochepa kwambiri kuposa PTFE, komabe imakhala ndi kukana kwambiri kwa mankhwala. Uhmwpe ilinso ndi kukana kwabwino kwa kuvala komanso kukana kwa dzimbiri, ndipo imatha kugwiritsidwa ntchito pakanthawi kochepa.
Silicone mphira wamkuwa Silicone
Rabara ya silicone ya mkuwa ndi polima yokhala ndi magulu achilengedwe, omwe unyolo wawo waukulu umapangidwa ndi silicon ndi maatomu okosijeni. Kutentha kwapakati kumayambira -100 ¡ã C mpaka 300 ¡ã C. Ili ndi kutentha kwabwino komanso kutentha kwa kutentha, ntchito yabwino kwambiri yamagetsi yamagetsi ndi inertness yaikulu ya mankhwala. Oyenera organic acid ndi otsika ndende ya inorganic asidi, kuchepetsa alkali ndi moyikira zamchere. Zoipa: mphamvu zochepa zamakina. Chithandizo cha post vulcanization ndichofunika.
Zithunzi za Graphite
Graphite ndi kristalo wa kaboni, ndi zinthu zopanda zitsulo, mtundu wa siliva wotuwa, wofewa, wokhala ndi zitsulo zonyezimira. Kulimba kwa Mohs ndi 1 ~ 2, mphamvu yokoka yeniyeni ndi 2.2 ~ 2.3, ndipo kachulukidwe kake nthawi zambiri ndi 1.5 ~ 1.8. Ili ndi kukana kutentha kwambiri, kukana kwa okosijeni, kukana kwa dzimbiri, kukana kutenthedwa kwamafuta, kulimba kwamphamvu, kulimba mtima, mphamvu zodzipaka mafuta, mphamvu zamatenthedwe amphamvu, madulidwe amagetsi ndi zina zapadera zakuthupi ndi zamankhwala. Lili ndi kukana kwapadera kwa okosijeni, kudzipangira nokha ndi pulasitiki pa kutentha kwakukulu, ndi magetsi abwino, otentha ndi omatira. Itha kugwiritsidwa ntchito ngati filler kapena performance IMPROver ya mphira, pulasitiki ndi zida zosiyanasiyana zophatikizika kuti zithandizire kukana, kukana kukakamiza kapena madulidwe azinthu. The valavu gasket, kulongedza katundu ndi mpando nthawi zambiri zopangidwa graphite.
Graphite wa malo osungunuka kwambiri, mpaka 3000 ¡æ pansi pa vacuum ndi kuyamba kufewetsa amakonda kusungunula dziko, graphite evaporated sublimation kwa 3600 ¡æ, zinthu zambiri pansi pa kutentha mphamvu amachepetsa pang'onopang'ono, pamene graphite mu mkangano mpaka 2000. ¡æ, mphamvu yake ndi kutentha kwabwino kawiri m'malo mwake, koma kusiyana kwa kukana kwa okosijeni kwa graphite oxidation rate kunawonjezeka pang'onopang'ono ndi kutentha.
The matenthedwe madutsidwe ndi madutsidwe magetsi graphite ndi mkulu ndithu, madutsidwe ake ndi 4 nthawi apamwamba kuposa zitsulo zosapanga dzimbiri, 2 nthawi apamwamba kuposa mpweya zitsulo, 100 nthawi 100 kuposa wamba sanali zitsulo. madutsidwe ake matenthedwe, osati kuposa zitsulo, chitsulo, kutsogolera ndi zipangizo zina zitsulo, komanso ndi kutentha kumawonjezera madutsidwe matenthedwe amachepetsa, amene ndi wosiyana ndi zipangizo ambiri zitsulo, pa kutentha kwambiri, graphite ngakhale amakonda adiabatic boma. Chifukwa chake, pansi pazikhalidwe zotentha kwambiri, magwiridwe antchito a graphite ndi odalirika kwambiri. Graphite ali lubricity wabwino ndi plasticity, graphite mikangano koyefishienti ndi zosakwana 0.1, graphite akhoza kukhala permeable pepala kuwala, mu gawo loyamba la graphite kuuma ndi lalikulu kwambiri, ngakhale zida diamondi n'zovuta pokonza. Graphite ali kukhazikika kwa mankhwala, kukana kwa asidi, kukana kwa alkali, kukana kwa organic solvents dzimbiri. Chifukwa chazomwe zili pamwambazi zapamwamba kwambiri za graphite, m'mafakitale amakono amagwiritsa ntchito bwino kwambiri.
Njira yolumikizirana pakati pa chowongolera magetsi ndi valavu iliyonse
The actuator yamagetsi imagwirizana kwambiri ndi valavu, yomwe imagwiritsidwa ntchito pamakina owongolera okha. Pali mitundu yambiri yamagetsi oyendetsa magetsi, omwe ndi osiyana ndi machitidwe. Mwachitsanzo, chowotcha chamagetsi cha angular ndi chotulutsa ma torque, pomwe chowongolera chamagetsi chowongoka ndichotulutsa mphamvu. Mtundu wamagetsi opangira magetsi muzogwiritsira ntchito dongosolo uyenera kusankhidwa malinga ndi zosowa za ntchito ya valve.
Njira yolumikizirana
I. Kulumikizana kwa Flange:
Uwu ndiye njira yolumikizira yomwe imagwiritsidwa ntchito kwambiri mu ma valve. Malinga ndi mawonekedwe a pamwamba olowa, akhoza kugawidwa mu zotsatirazi:
1. Mtundu wosalala: amagwiritsidwa ntchito pa ma valve omwe ali ndi mphamvu yochepa. Yabwino processing
2, mtundu wa concave ndi convex: kuthamanga kwambiri kogwira ntchito, kumatha kugwiritsidwa ntchito mu chochapira cholimba
3. Mtundu wa Tenon ndi groove: gasket yokhala ndi pulasitiki yokulirapo ingagwiritsidwe ntchito pazida zowononga, ndipo kusindikiza kumakhala bwinoko.
4, mtundu wa trapezoidal groove: ndi mphete yachitsulo chowulungika ngati chochapira, chomwe chimagwiritsidwa ntchito pakukakamiza kwa 64 kg/cm2 valavu, kapena valavu yotentha kwambiri.
5, mtundu wa mandala: washer ndi mawonekedwe a lens, opangidwa ndi chitsulo. Kwa ma valves apamwamba a PRESSURE WOKHALA NDI NTCHITO YA 100 kg / CM2, kapena ma valve otentha kwambiri.
6, mtundu wa mphete ya O: Iyi ndi mawonekedwe atsopano olumikizirana ndi flange, amapangidwa ndi mawonekedwe a mphete ya O, yomwe ili mu kusindikiza kwa mawonekedwe olumikizira.
Awiri, kugwirizana kwa ulusi:
Iyi ndi njira yosavuta yolumikizira ndipo nthawi zambiri imagwiritsidwa ntchito ndi ma valve ang'onoang'ono. Pali milandu ina iwiri:
1, kusindikiza mwachindunji: ulusi wamkati ndi wakunja mwachindunji umagwira ntchito yosindikiza. Pofuna kuonetsetsa kuti cholumikizira sichikutha, nthawi zambiri chimakhala ndi mafuta otsogolera, linoleum ndi PTFE zopangira zodzaza; Ptfe yaiwisi lamba, ntchito kuwonjezeka kutchuka; Nkhaniyi ili ndi kukana kwa dzimbiri kwabwino, kusindikiza, kosavuta kugwiritsa ntchito ndi kusungirako, disassembly, ikhoza kuchotsedwa kwathunthu, chifukwa ndi filimu yopanda viscous, yoposa mafuta otsogolera, linoleum.
2. Kusindikiza kwachindunji: mphamvu ya screw tightening imasamutsidwa ku washer pakati pa ndege ziwiri, kotero kuti washer azichita ntchito yosindikiza.
Chachitatu, kugwirizana kwa manja a khadi:
Kulumikizana ndi kusindikiza kwa manja a clamping ndikuti pamene natiyo imangiriridwa, mkono wokhotakhota umapanikizika, kotero kuti m'mphepete mwake mumaluma khoma lakunja la chitoliro, ndipo chingwe chakunja chachitsulo chimakhala pafupi ndi cone ya thupi. pampanipani, kotero imatha kuteteza kutayikira.
Ubwino wa njira yolumikizira iyi ndi:
1, kukula kochepa, kulemera kopepuka, kapangidwe kosavuta, kosavuta disassembly;
2, kulumikizana mwamphamvu, kugwiritsa ntchito mosiyanasiyana, kumatha kupirira kuthamanga kwambiri (1000 kg/cm2), kutentha kwambiri (650¡æ) ndi kugwedezeka kwamphamvu
3, akhoza kusankha zipangizo zosiyanasiyana, oyenera kupewa dzimbiri;
4, Machining kulondola zofunika si mkulu; Zosavuta kukhazikitsa pamalo okwera.
Fomu yolumikizira manja yotsekera yagwiritsidwa ntchito pazinthu zina zazing'ono za ma valve ku China.
Chachinayi, kulumikizana kwa clamp:
Imeneyi NDI NJIRA YOLUMIKIRANI KWAMBIRI YOMWE IMAKUFUNA MABOLU AWIRI OKHA NDIPO NDI WOYENERA PA MAVAVU OCHOKERA Ochepa OTSANIZIDWA OCHOKERA.
Chachisanu, kulumikizana kodzilimbitsa mkati:
Koposa mitundu yonse yolumikizirana, ndikugwiritsa ntchito mphamvu yakunja kuti athetse kukakamizidwa kwa sing'anga, kuti akwaniritse kusindikiza. Zotsatirazi zikufotokoza mawonekedwe odzilimbitsa okha pogwiritsa ntchito kuthamanga kwapakati. mphete yake yosindikiza imayikidwa mu chulucho wamkati, ndi mbali yapakati yotsutsana ndi mbali ina, kupanikizika kwapakati ku cone yamkati, ndikusamutsidwa ku mphete yosindikizira, mu Angle ina ya cone pamwamba, imapanga zigawo ziwiri, zofanana. mzere wapakati wa thupi la valve kunja, kupanikizika kwina kwa khoma lamkati la thupi la valve. Chigawo chomaliza ndi mphamvu yodzilimbitsa yokha. Kuchuluka kwa mphamvu yapakati, mphamvu yodzilimbitsa yokha. Choncho kugwirizana kwamtunduwu ndi koyenera kwa ma valve othamanga kwambiri. Zimapulumutsa zinthu zambiri ndi ntchito kusiyana ndi kugwirizana kwa flanged, komanso kumafuna kuchuluka kwa preload, kotero kuti kupanikizika mu valavu sipamwamba, ntchito yodalirika. Vavu yopangidwa ndi mfundo yodzitchinjiriza pawokha nthawi zambiri imakhala yothamanga kwambiri.
Pali mitundu yambiri yolumikizira valavu, mwachitsanzo, ena sayenera kuchotsa valavu yaying'ono, yowotcherera pamodzi ndi chitoliro; Ma valve ena omwe si azitsulo, pogwiritsa ntchito kugwirizana kwa socket, ndi zina zotero. Ogwiritsa ntchito ma valve ayenera kuthandizidwa molingana ndi zikhalidwe zake.