Pane musiyano pakati peWC6 neWC9 valve zvinhu, musiyano uripi?

Pane musiyano pakati peWC6 neWC9 valve zvinhu, musiyano uripi?

Iyo yakakosha parameter yevhavha ndiyo inoyerera coefficient uye cavitation coefficient yevhavha, iyo inowanzowanikwa mune data yevhavha inogadzirwa munyika dzepamusoro maindasitiri, uye kunyange kudhindwa mumuenzaniso. Nyika yedu inogadzira vharuvhu haina ruzivo urwu, nekuti tora chikamu ichi chedata chinoda kuita bvunzo kuti ugone kuisa kumberi, ino inyika yedu uye pasirese danho repamusoro revhavha gap imwe yeakakosha kuita. .
A, kuyerera kwevharuvhu
Ivhavha inoyerera yevhavha ndiyo chiyero chevhavha inoyerera simba index, iyo yakakura yekuyerera kweyekukoshera kukosha, iyo inoyerera inoyerera nepakati pevhavha apo kurasikirwa kwekumanikidza kuri kudiki.
Zvinoenderana neKV kukosha kwekuverenga formula
Ipo: KV - kuyerera kweyeyeti Q - kuyerera kwevhoriyamu m3/h δ P - vharafu yekurasikirwa kwebhariP - density yemvura kg/m3
Mbiri, valve cavitation coefficient
Iyo cavitation coefficient δ kukosha inoshandiswa kuona kuti ndeupi rudzi rwevhavha yekuvaka yekusarudza yekudzora kuyerera.
Ikoko: H1 - kudzvinyirira mH2 - musiyano pakati pemhepo yemhepo uye saturated vapor pressure inoenderana nekushisa M δ P - musiyano pakati pekumanikidzwa pamberi uye shure kwevhavha M
Iyo inobvumirwa cavitation coefficient δ inosiyana pakati pemavharuvhu nekuda kweakasiyana magadzirirwo. Sezvakaratidzwa mumufananidzo. Kana iyo yakaverengwa cavitation coefficient yakakura kudarika inobvumirwa cavitation coefficient, chirevo chacho chinoshanda uye cavitation haizoitiki. Kana iyo inobvumirwa cavitation coefficient iri 2.5, zvino:
Kana δ> 2.5, cavitation haizoitika.
Kana 2.5 > δ > 1.5, zvishoma cavitation inoitika.
Kana δ Kuenderera mberi kwekushandisa δ Iwo ekutanga uye anoshanda maitiro curves emavharuvhu haaratidze kana cavitation inoitika, rega rega pane iyo iyo muganhu wekushanda unosvika. Kuburikidza pamusoro kukarukureta zvakajeka. Naizvozvo, cavitation inogadzirwa nekuti iyo mvura inomhanyisa kuburikidza nechikamu chekuderera kwechikamu mukuyerera, chikamu chemvura chinoputika, uye mabhuru anogadzirwa anobva aputika muchikamu chakavhurika mushure mevharuvhu, ine maratidziro matatu:
(1) Ruzha
(2) vibration (kukuvadza kwakakomba kune hwaro uye zvimiro zvine hukama, zvichikonzera kuneta kutyoka)
(3) Kukuvadzwa kwezvinhu (kukukurwa kwevharuvhu muviri uye pombi)
Kubva pakuverenga pamusoro apa, hazvisi zvakaoma kuona kuti cavitation yakabatana zvikuru nekudzvinyirira H1 mushure mevhavha. Kuwedzera H1 kuchachinja mamiriro ezvinhu uye kugadzirisa nzira:
A. Isa vharafu yakaderera mumutsara.
B. Isai ndiro ye orifice mupombi kuseri kwevharuvhu kuti iwedzere kuramba.
C. Ivhavha yevhavha yakazaruka uye yakananga inounganidza dura, iyo inowedzera nzvimbo yekuputika kwebubble uye inoderedza cavitation erosion.
Kuongorora kwakadzama kwezvina zviri pamusoro apa, muchidimbu vharafu yegedhi, shavishavi vharuvhu maitiro makuru uye paramita runyorwa kuitira nyore kusarudza. Zvikamu zviviri zvakakosha zvinoita basa rakakosha mukushanda kwevharuvhu.
Pane musiyano pakati pevharuvhu zvinhu WC6 neWC9? Chii chakasiyana? Valve zvinhu WC6 uye WC9: OSE WC6 uye WC9 isimbi yealloy, ane chaiwo ma mechanical zvivakwa, ane simba rakafanana rekusimba, goho simba uye kurebesa pakamuri tembiricha.
Valve zvinhu WC6 uye WC9
Ose ari maviri WC6 uye WC9 simbi alloy ane akanyanya kufanana mechanicha zvivakwa uye yakafanana kusimba simba, goho simba uye elongation pakamuri tembiricha.
Musiyano ndeye alloy content. Kana ichienzaniswa neWC6, WC9 ine chromium yakawanda uye molybdenum, saka simba rayo remuchina pakupisa kwakanyanya kuri nani. Pamusoro pezvo, WC9 ine kugona kurinani kuramba kurohwa.