Habka beddelka unugyada cadaadiska caadiga ah ee waalka: 1bar=0.1MPa=1KG=14.5PSI=1kgf/m2
Cadaadiska magaca ah (PN) iyo Heerka Ameerikaanka pound pound (Lb) labaduba waa muujinta cadaadiska.Farqiga u dhexeeya ayaa ah in cadaadiska ay matalaan u dhigma heerkulka tixraaca ee kala duwan.Nidaamka PN Yurub wuxuu tixraacayaa cadaadiska u dhigma ee 120 ℃, halka heerka heerka Ameerika uu tixraacayo cadaadiska u dhigma ee 425.5 ℃.
Sidaa darteed, isweydaarsiga injineernimada, beddelka cadaadiska kaliya lama fulin karo.Tusaale ahaan, beddelka cadaadiska CLAss300 # waa inuu noqdaa 2.1MPa, laakiin haddii heerkulka isticmaalka la tixgeliyo, cadaadiska u dhigma ayaa kor u kici doona, taas oo u dhiganta 5.0MPa marka loo eego heerkulka iyo tijaabada cadaadiska walxaha.
Waxaa jira laba nooc oo nidaamyada waalka ah: mid waa nidaamka "cadaadiska magaca ah" oo ay matalaan Jarmalka (oo ay ku jiraan Shiinaha) oo ku salaysan cadaadiska shaqada ee la ogol yahay ee heerkulka caadiga ah (100 ° C Shiinaha iyo 120 ° C ee Jarmalka).Mid waa "nidaamka cadaadiska heerkulka" oo uu matalo Mareykanka iyo cadaadiska shaqada ee la ogol yahay ee heerkul gaar ah.
Nidaamka heerkulka iyo cadaadiska ee Maraykanka, marka laga reebo 150Lb, kaas oo ku salaysan 260 ° C, heerarka kale waxay ku salaysan yihiin 454 ° C. Cadaadiska la ogol yahay ee No. 25 carbon steel valve of 150lb (150PSI=1MPa) at 260 ℃ waa 1MPa, iyo walbahaarka la ogol yahay ee heerkulka caadiga ah aad ayuu uga weyn yahay 1MPa, qiyaastii 2.0MPa.
Sidaa darteed, guud ahaan marka la hadlo, heerka cadaadiska magaca ee u dhigma heerka American 150Lb waa 2.0MPa, heerka cadaadiska magaca ee u dhigma 300Lb waa 5.0MPa, iwm. habka beddelka.
Intaa waxaa dheer, jaangooyooyinka Japan, waxaa jira nidaamka darajada "K", sida 10K, 20K, 30K, iwm. Fikradda nidaamka heerka cadaadiska ayaa la mid ah nidaamka darajada cadaadiska Ingiriiska, laakiin cutubka cabbirku waa nidaamka metric.
Sababtoo ah tixraaca heerkulka cadaadiska magaca iyo heerka cadaadiska way kala duwan yihiin, ma jiro waraaqo adag oo u dhexeeya iyaga.Ka eeg Shaxda warqadaha ugu dhow ee u dhexeeya saddexda.
Jadwalka isbarbardhigga ee beddelka rodolka (Lb) iyo halbeegga Jabbaan (K) iyo cadaadiska magaca (tixraaca)
Lb - K - cadaadiska magaca (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
Shaxda 1 Isbarbardhigga u dhexeeya CL iyo cadaadiska magaca PN
CL | 150 | 300 | 400 | 600 | 800 |
Cadaadiska caadiga ah ee PN/MPa | 2.0 | 5.0 | 6.8 | 11.0 | 13.0 |
CL | 900 | 1500 | 2500 | 3500 | 4500 |
Cadaadiska caadiga ah ee PN/MPa | 15.0 | 26.0 | 42.0 | 56.0 | 76.0 |
Shaxda 2 Isbarbardhigga miiska u dhexeeya darajada “K” iyo CL
CL | 150 | 300 | 400 | 600 | 900 | 1500 | 2000 | 2500 | 3500 | 4500 |
K Darajada | 10 | 20 | 30 | 45 | 65 | 110 | 140 | 180 | 250 | 320 |
Waqtiga boostada: Jul-26-2022