Kuyerekeza kwa ubale womwe umagwirizana pakati pa magulu okakamiza a American standard, Japanese standard and national standard valves

Common pressure unit conversion formula ya vavu: 1bar=0.1MPa=1KG=14.5PSI=1kgf/m2

Kuthamanga mwadzina (PN) ndi Class American standard pound (Lb) onse ndi mawu osonyeza kupanikizika.Kusiyana kwake ndikuti kukakamizidwa komwe amayimira kumafanana ndi kutentha kosiyanasiyana.Dongosolo la PN European limatanthawuza kukakamiza kofananira pa 120 ℃, pomwe muyezo wa Class American umatanthawuza kukakamiza kofananira ku 425.5 ℃.

Chifukwa chake, mukusinthana kwauinjiniya, kutembenuka mtima sikungangochitika.Mwachitsanzo, kutembenuka kwamphamvu kwa CLAss300 # kuyenera kukhala 2.1MPa, koma ngati kutentha kogwiritsidwa ntchito kumaganiziridwa, kukakamiza kofananirako kumakwera, komwe kuli kofanana ndi 5.0MPa malinga ndi kutentha ndi kupanikizika kwa zinthuzo.
Pali mitundu iwiri ya machitidwe a valve: imodzi ndi "yothamanga mwadzina" yomwe imayimiridwa ndi Germany (kuphatikizapo China) ndipo imachokera ku mphamvu yovomerezeka yogwira ntchito pa kutentha kwabwino (100 ° C ku China ndi 120 ° C ku Germany).Imodzi ndi "dongosolo la kutentha kwa kutentha" lomwe likuimiridwa ndi United States ndi kukakamizidwa kovomerezeka kwa ntchito pa kutentha kwina.
Mu kutentha ndi kupanikizika dongosolo la United States, kupatula 150Lb, zomwe zimachokera ku 260 ° C, miyeso ina imachokera ku 454 ° C. Kupanikizika kovomerezeka kwa No. 25 carbon steel valve ya 150lb (150PSI = 1MPa) pa 260 ℃ ndi 1MPa, ndipo kupanikizika kovomerezeka pa kutentha kwabwino kumakhala kwakukulu kuposa 1MPa, pafupifupi 2.0MPa.
Choncho, nthawi zambiri, kalasi yothamanga yomwe ikugwirizana ndi American standard 150Lb ndi 2.0MPa, ndipo gulu lamphamvu lofanana ndi 300Lb ndi 5.0MPa, ndi zina zotero. njira yosinthira.
Kuphatikiza apo, mumiyezo ya ku Japan, pali dongosolo la "K", monga 10K, 20K, 30K, ndi zina zotero. Lingaliro la dongosolo la kupanikizika kwa kalasiyi ndilofanana ndi la British pressure grade grade system, koma gawo loyezera ndilofanana. ndondomeko ya metric.
Chifukwa kutchulidwa kwa kutentha kwa kukakamizidwa mwadzina ndi gulu lamphamvu ndizosiyana, palibe makalata okhwima pakati pawo.Onani Table kuti muyerekeze makalata atatuwa.
Gome lofananiza la kutembenuka kwa mapaundi (Lb) ndi muyezo waku Japan (K) ndi kukakamiza mwadzina (reference)
Lb - K - kuthamanga kwadzina (MPa)
150Lb——10K——2.0MPa
300Lb——20K——5.0MPa
400Lb——30K——6.8MPa
600Lb——45K——10.0MPa
900Lb——65K——15.0MPa
1500Lb——110K——25.0MPa
2500Lb——180K——42.0MPa
2500Lb——180K——42.0MPa
3500Lb——250K——56.0MPa
4500Lb——320K——76.0MPa

Table 1 Kuyerekeza tebulo pakati pa CL ndi kukakamiza mwadzina PN