Kulumikizana kozungulira ndi thupi la valavu yokhala ndi ma flanges kumapeto onse awiri, ofanana ndi ma flanges pa payipi, polumikiza flange yomwe yaikidwa mu payipi. Kulumikizana kozungulira ndi mtundu wofala kwambiri wa kulumikizana kwa valavu. Ma flanges ali ndi convex (RF), plane (FF), convex ndi concave (MF) ndi mfundo zina. Malinga ndi mawonekedwe a malo olumikizirana, amatha kugawidwa m'mitundu iyi:
(1) mtundu wosalala: wa valavu yokhala ndi mphamvu yochepa. Kukonza kumakhala kosavuta;
(2) mtundu wopindika komanso wopindika: kuthamanga kwambiri pantchito, mutha kugwiritsa ntchito gasket yolimba;
(3) mtundu wa tenon groove: gasket yokhala ndi pulasitiki yayikulu ingagwiritsidwe ntchito kwambiri m'malo owononga, ndipo kutseka kwake kumakhala bwino;
(4) mtundu wa trapezoidal groove: mphete yachitsulo yozungulira ngati gasket, yomwe imagwiritsidwa ntchito mu valavu yogwirira ntchito ≥64 kg/cm2, kapena valavu yotentha kwambiri;
(5) Mtundu wa lenzi: gasket ili ngati lenzi, yopangidwa ndi chitsulo. Imagwiritsidwa ntchito pa mavavu opanikizika kwambiri okhala ndi kuthamanga kogwira ntchito ≥ 100kg/cm2, kapena mavavu otenthetsera kwambiri;
(6) Mtundu wa mphete ya O: uwu ndi mtundu watsopano wa kulumikizana kwa flange, chifukwa cha kutuluka kwa mitundu yonse ya mphete ya O ya rabara, ndipo yapangidwa, ndiyodalirika kwambiri pakutseka kuposa gasket wamba.
(1) Kulumikiza matako ndi kuwotcherera: malekezero onse awiri a thupi la valavu amakonzedwa kukhala mbedza yowotcherera matako malinga ndi zofunikira za kuwotcherera matako, mogwirizana ndi mbedza yowotcherera mapaipi, ndipo amakhazikika pa payipi kudzera mu kuwotcherera.
(2) kulumikizana kwa socket welding: malekezero onse awiri a thupi la valavu amakonzedwa motsatira zofunikira za socket welding ndipo amalumikizidwa ndi payipi kudzera mu socket welding.
Kulumikiza ulusi ndi njira yabwino yolumikizira ndipo nthawi zambiri imagwiritsidwa ntchito pa ma valve ang'onoang'ono. Thupi la valavu limakonzedwa motsatira ulusi wamba, ndipo pali mitundu iwiri ya ulusi wamkati ndi ulusi wakunja. Yogwirizana ndi ulusi womwe uli pa chitoliro. Kulumikiza ulusi kumagawidwa m'mikhalidwe iwiri:
(1) kutseka mwachindunji: ulusi wamkati ndi wakunja umagwira ntchito yotseka mwachindunji. Pofuna kuonetsetsa kuti cholumikiziracho sichikutuluka, nthawi zambiri ndi mafuta a lead, hemp ndi lamba wodzaza wa PTFE; Pakati pawo, lamba wa PTFE umagwiritsidwa ntchito kwambiri. Zinthuzi zimakhala ndi kukana dzimbiri bwino, zimakhala ndi zotsatira zabwino kwambiri zotsekera, zosavuta kugwiritsa ntchito ndikusunga, zikachotsedwa kwathunthu, chifukwa ndi wosanjikiza wa filimu yosakhuthala, yabwino kwambiri kuposa mafuta a lead, hemp.
(2) kutseka kosalunjika: mphamvu ya kulimbitsa zomangira imatumizidwa ku gasket pakati pa ndege ziwirizi, kotero kuti gasket imagwira ntchito yotseka.
Pali mitundu isanu ya ulusi womwe umagwiritsidwa ntchito kwambiri:
(1) Ulusi wofanana wa Metric;
(2) Ulusi wofanana wa inchi;
(3) Ulusi wotsekera ulusi wa chitoliro;
(4) ulusi wa chitoliro chotseka chosalumikizidwa;
(5) Ulusi wa chitoliro wamba waku America.
Chiyambi chachikulu ndi ichi:
① Muyezo wapadziko lonse lapansi wa ISO228/1, DIN259, wa ulusi wofanana wamkati ndi wakunja, khodi G kapena PF(BSP.F);
② Muyezo wa ku Germany ISO7/1, DIN2999, BS21, wa mphuno yakunja ya dzino, ulusi wofanana wa dzino lamkati, khodi BSP.P kapena RP/PS;
③ muyezo wa ku Britain wa ISO7/1, BS21, ulusi wamkati ndi wakunja wokhotakhota, code PT kapena BSP.TR kapena RC;
④ American standard ANSI B21, ulusi wamkati ndi wakunja, code NPT G(PF), RP(PS), RC (PT) jino Angle ndi 55°, NPT jino Angle ndi 60°BSP.F, BSP.P ndi BSP.TR onse pamodzi amatchedwa mano a BSP.
Pali mitundu isanu ya ulusi wamba wa mapaipi ku United States: NPT yogwiritsidwa ntchito nthawi zonse, NPSC ya ulusi wolunjika wamkati wa mapaipi opangira zinthu, NPTR yolumikizira ndodo yotsogolera, NPSM ya ulusi wolunjika wa mapaipi opangira zinthu zolumikizira makina (zolumikizira makina zoyenera kwaulere), ndi NPSL yolumikizira makina osalowerera bwino ndi nati zokhoma. Ndi ya ulusi wotsekedwa wa mapaipi osalumikizidwa (N: American national standard; P: chitoliro; T: Taper)
4. Kulumikizana kwa Taper
Mfundo yolumikizira ndi kutseka chikwama ndi yakuti pamene nati yalimbikitsidwa, chikwamacho chimakhala pansi pa kupanikizika, kotero kuti m'mphepete mwake mulowe mkati mwa khoma lakunja la chitoliro, ndipo makona akunja a chikwamacho amatsekedwa mwamphamvu ndi makona a thupi lolumikizana pansi pa kukakamizidwa, kotero kuti amatha kupewa kutuluka kwa madzi.ma valve ogwiritsira ntchito zida.Ubwino wa njira iyi yolumikizirana ndi:
(1) Voliyumu yaying'ono, kulemera kopepuka, kapangidwe kosavuta, kusweka mosavuta ndi kusonkhana;
(2) relay yamphamvu, yogwiritsidwa ntchito mosiyanasiyana, imatha kupirira kuthamanga kwambiri (1000 kg/sikweya sentimita), kutentha kwambiri (650℃) komanso kugwedezeka;
(3) akhoza kusankha zipangizo zosiyanasiyana, zoyenera kupewa dzimbiri;
(4) kulondola kwa makina sikokwanira;
(5) zosavuta kuyika pamalo okwera kwambiri.
5. Kulumikiza kwa clamp
Ndi njira yolumikizira mwachangu yomwe imafuna maboluti awiri okha ndipo ndi yoyenera ma valve otsika mphamvu omwe nthawi zambiri amachotsedwa.
Nthawi yotumizira: Feb-22-2022