ʻO nā pono a me nā pōʻino o nā kiwi like ʻole ʻO nā kiwi ākea nui no ke aha e paʻakikī ai ke hoʻololi? Pehea e hoʻoponopono ai?
Hoʻokaʻawale ma ka hoʻohana a me ka hana
Hoʻohana nui ʻia ka valve truncation e ʻoki a hoʻopili i ke kahe waena. Hoʻopili ʻia ka valve puka, ka valve honua, ka valve diaphragm, ka valve ball, plug valve, disc valve, plunger valve, ball plug valve, needle type instrument valve, etc.
Hoʻohana nui ʻia ka valve hoʻoponopono e hoʻoponopono i ke kahe o ka medium, pressure, etc.
Hoʻohana ʻia nā kiwi hoʻopaʻa no ka pale ʻana i ka hoʻihoʻi ʻana o ka media. Hoʻokomo pū ʻia nā pahu hoʻopaʻa o nā ʻano hana like ʻole.
Hoʻohana ʻia nā valve diverter e hoʻokaʻawale, puʻunaue a hui pū paha i ka media. Me nā ʻano like ʻole o ke ʻano o ka valve hoʻohele a me ka pahele, etc.
ʻO ka valve palekana no ka overpressure waena i ka wā o ka palekana palekana. Hoʻokomo ʻia nā ʻano valve palekana āpau.
Hoʻokaʻawale ʻia e nā ʻāpana nui
(a) e like me ka helu puʻe
ʻO ke kaomi ʻana o ka pahu wai ma lalo o ke kaomi ʻenekini maʻamau.
Haʻahaʻa puʻupaʻa kiwi Valve me ka nominal kaomi PN emi malalo o 1.6MPa.
Medium puʻe kaomi nominal kaomi PN2.5 ~ 6.4MPa valve.
Kiʻekiʻe puʻe kiʻekiʻe kaomi nominal kaomi PN10.0 ~ 80.0MPa pahu.
ʻOi aku ka nui o ka valve kiʻekiʻe kiʻekiʻe ma mua o 100MPa.
(2) e like me ka hoʻokaʻawale ʻana o ka mahana waena
ʻOi aku ka nui ma mua o 450C.
ʻO ka pahu wela waena 120C ma lalo o T 450C valve.
Puka wela maʻamau -40C
ʻO ka pahu wela T ma lalo o -100C valve.
(3) e like me ka hoʻokaʻawale ʻana o ke kino valve
ʻAʻohe mea hao pahu pahu: e like me ka pahu seramika, ka pahu FRP, ka pahu plastik.
ʻO ka pahu pahu metala: e like me ka pahu keleawe keleawe, ka pahu alumini alumini, ka pahu alakaʻi alakaʻi, ka valve titanium alloy, ka valve monel alloy
Kiwi hao, kiwi kila kalapona, kiwi kila, kiwi kila haʻahaʻa, kiʻekiʻe.
ʻO ke kino metala i hoʻopaʻa ʻia i ka valve: e like me ke kaula alakaʻi i hoʻopaʻa ʻia, ka valve plastic lined, lined enamel valve.
Pūnaehana hoʻokaʻawale maʻamau
ʻAʻole kēia ʻano hoʻohālikelike e like me ke kumu, ka hana a me ke ʻano, ʻo ia ke ʻano hoʻohālikelike maʻamau i hoʻohana ʻia ma ka home a ma waho. ʻO ka mea maʻamau, aia nā ʻīpuka puka, nā kīwaha honua, nā kīwaha throttle, nā kīwaha mea kani, nā kīwaha plunger, nā valve diaphragm, nā kīwaha plug, nā kīwī pōleʻa, nā kīwaha butterfly, nā kiwi hoʻopaʻa, nā kiwi hoʻohaʻahaʻa puʻupuʻu, nā kiwi palekana, nā pahele, nā kiwi hoʻoponopono, nā kiwi lalo, nā kānana , nā pahu hoʻoheheʻe, etc.
No ke aha e paʻakikī ai ka hoʻololi ʻana i nā kiwi nui caliber? Pehea e hoʻoponopono ai?
Ka nānā 'ana i nā kumu no ka pa'akikī o ka wehe 'ana a me ka pani 'ana i nā kiwi nui anawaena
He 60-90kg ka awelika o ke kanaka makua, ma muli o ke kino like ʻole.
Hoʻolālā ʻia ke kuhikuhi holoʻokoʻa o ka valve honua i haʻahaʻa a kiʻekiʻe. Ke pani ʻia ka valve, hoʻoneʻe ke kino o ke kanaka i ka huila lima ma ka ʻaoʻao e hoʻohuli, i neʻe ai ka disc valve i lalo a pani. I kēia manawa, pono e lanakila ka hui ʻana o ʻekolu ʻano o ka ikaika, ʻo ia hoʻi:
1) axial jacking ikaika Fa;
2) Pilikia ikaika ma waena o ka hoʻopaʻa ʻana a me ka pahu pahu Fb;
3) Hoʻopili ke kumu i ke kumu diski me ka ikaika friction Fc
ʻO ka huina nui M=(Fa+Fb+Fc)R
Hiki ke ʻike ʻia ʻo ka nui o ka caliber, ʻoi aku ka nui o ka ikaika jacking axial. Ke kokoke i ka moku'āina pani, ua kokoke kokoke ka ikaika jacking axial i ke kaomi maoli o ka pūnaewele paipu (no ka mea, P1-P2P1, P2=0 ke pani ʻia).
No ka laʻana, ua hoʻohana ʻia ka valve globe DN200 caliber ma kahi paipu mahu 10bar, a ʻo kāna * huaʻōlelo e pani i ka axial thrust Fa= 10R2 =3140kg. ʻO ka ikaika pōʻai ākea i koi ʻia no ka pani ʻana ua kokoke i ka palena o ka ikaika pōʻai ākea e hiki ke hoʻopuka i ke kino kanaka maʻamau. No laila, paʻakikī loa i ke kanaka ke pani piha i ka valve ma lalo o kēia kūlana hana.
ʻOiaʻiʻo, manaʻo kekahi mau hale hana e hoʻokomo i kēia ʻano valve i hope, e hoʻonā i ka pilikia o ka paʻakikī e pani, akā aia ka pilikia paʻakikī e wehe ma hope o ka pani ʻana.
ʻO ke kumu o ke anawaena nui o ka pōpoe valve e hiki ke hoʻokuʻu i loko
Hoʻohana pinepine ʻia ka valve stop caliber nui i ka puka boiler, ka cylinder nui, ka luna mahu a me nā kūlana ʻē aʻe, aia kēia mau kūlana i kēia mau pilikia:
1) ʻO ka ʻokoʻa ʻokoʻa ma ka puka o ka paila ka mea maʻamau, no laila ʻoi aku ka nui o ka kahe o ka mahu, a ʻoi aku ka nui o ka hopena a me ka luku ʻana i ka ʻili o ka sila. Eia kekahi, ʻaʻole hiki ke 100% ka maikaʻi o ka puhi ʻana i ka paila, ka mea e ʻoi aku ai ka nui o ka wai o ka wai mahu, maʻalahi ka hana ʻana i ka cavitation a me ka cavitation pōʻino i ka ʻili o ka valve sealing.
2) Ma ka puka o ka paila a me ka ʻoki ʻoki kokoke i ka cylinder, no ka mea ʻo ka mahu ma waho o ka paila, aia kahi hanana overheating intermittent, i ke kaʻina o ka saturation, inā ʻaʻole maikaʻi loa ka mālama ʻana i ka wai paila. e hoʻoheheʻe pinepine i ka ʻāpana o ka waikawa a me nā mea alkali, ma ka ʻili hoʻopaʻa e hoʻoulu ai i ka corrosion a me ka erosion; Hiki ke hoʻopili pū ʻia kekahi mau mea crystallizable i ka crystallization o ka ili e hoʻopaʻa ai i ka ʻili, no laila ʻaʻole hiki ke hoʻopaʻa paʻa ʻia ka pahu.
3) ʻO ka inlet a me ka puka puka o ka sub-cylinder, no ka mea, ʻo ka hoʻohana ʻana i ka mahu ma hope o ka valve i hana ʻia e nā koi hana a me nā kumu ʻē aʻe, ʻoi aku ka nui a me ka liʻiliʻi o ka hoʻohana ʻana i ka mahu, i ka hihia o ka hoʻololi nui ʻana i ka kahe kahe, ʻo ia. maʻalahi ka hana ʻana i ka uila, cavitation a me nā mea ʻē aʻe, no laila e hoʻoneʻe ai, cavitation a me nā pōʻino ʻē aʻe i ka ʻili o ka valve.
4) ʻO ka mea maʻamau, i ka wā e wehe ʻia ai nā pipeline nui o ka pipeline, pono ia e hoʻomaʻamaʻa i ka pipeline, a ʻo ke kaʻina hana preheating maʻamau e koi i kahi kahe liʻiliʻi o ka mahu e hele ai, no laila ua mālie a hoʻomehana ʻia ka pipeline i kekahi degere ma mua o ka hiki ke wehe piha ʻia ka valve ʻokiʻoki, i mea e pale aku ai i ka hoʻonui nui ʻana ma muli o ka hoʻomehana wikiwiki ʻana o ka pipeline a me ka pōʻino i kahi ʻāpana o ka pilina. Akā i kēia kaʻina hana, he liʻiliʻi loa ka wehe ʻana o ka valve, ʻoi aku ka nui o ka erosion rate ma mua o ka hopena hoʻohana maʻamau, hoʻemi nui i ke ola lawelawe o ka ʻili o ka valve sealing surface.
Hoʻololi paʻakikī ka hoʻololi ʻana i ke anawaena nui
1) ʻO ka mea mua, ʻōlelo ʻia e koho i ka bellow sealing globe valve e pale aku i ka hopena o ka friction resistance o ka plunger valve a me ka packing valve a me ka maʻalahi o ka hoʻololi ʻana.
2) pono e hana ʻia ka noho spool i nā mea me ke kūpaʻa maikaʻi o ka erosion a me ka hoʻohana ʻana i ka hana, e like me Siteli carbide;
3) Manaʻo ʻia e hoʻohana i ka ʻōnaehana disc pālua, ʻaʻole ma muli o ka wehe liʻiliʻi i hoʻokumu ʻia e ka nui o ka erosion, pili i ke ola lawelawe a me ka hopena sila.
Ka manawa hoʻouna: ʻAukake-05-2022
