Hoʻohana ʻo 2507 duplex stainless steel valve i ka JB/T7746 “Compactkiwi kila” hoʻolauna maʻamau ʻoihana
ʻO kā mākou hui kūikawā i ka hana ʻana i ka wai kai 2205 duplex stainless steel ball valve 2507 duplex stainless steel ball valve 2205 duplex stainless steel globe valve 2507 duplex stainless steel globe valve 2205 duplex stainless steel gate valve 2507 duplex stainless steel gate valve 2205 duplex stainless steel Y- type filter 2507 duplex stainless steel kānana 2205 check valve 2507 check valve a me nā huahana ʻē aʻe
ʻO ka wai kai 2205 duplex steel valve molybdenum duplex stainless steel he kūʻē maikaʻi i ka chloride stress corrosion ma lalo o ke kaumaha haʻahaʻa. ʻO ka maʻamau, ʻo 18-8 ʻano austenitic stainless steel ka mea maʻalahi i ke koʻikoʻi i ka haki ʻana i ka corrosion fracture ma ka hopena chloride neutral ma luna o 60C. ʻO nā mea hoʻololi wela, nā evaporators a me nā mea hana ʻē aʻe i hana ʻia i kēia ʻano kila kila i loko o ka ʻenehana ʻoihana o ka trace chloride a me ka hydrogen sulfide ka mea e hana ai i ka haʻihaʻi koʻikoʻi koʻikoʻi, aʻo ka duplex stainless steel he kūʻē maikaʻi.
(2) Seawater 2205 duplex kila valve molybdenum duplex kuhiliʻole kila i maikai corrosion kū'ē. Ua like ka lua ko'iko'i o ke kila kila kila me ka austenitic stainless steel me ke ku'e lua lua (PRE=Cr%+3.3Mo%+16N%). ʻO ka pale ʻana i ka corrosion o ka duplex stainless steel a me austenitic stainless steel ua like ia me AI 316L. ʻOi aku ka kiʻekiʻe o ke kūpaʻa ʻino o ke kila kila chromium duplex kiʻekiʻe me 25%Cr, ʻoi aku ka nitrogen, ma mua o ka AI 316L.
(3) Me ka pale ʻana i ka corrosion maikaʻi i ka luhi a me ka hana corrosion. I kekahi mau kūlana corrosive medium, kūpono no ka hana ʻana i nā pumps, valves a me nā mea mana ʻē aʻe.
(4) Loaʻa nā waiwai mechanical piha maikaʻi. ʻO ka ikaika kiʻekiʻe a me ka ikaika luhi, ʻo 18-8 ʻano austenitic stainless steel 2 mau manawa. Ma ke kūlana hoʻonā paʻa, hiki ka elongation i 25%, a ʻo ka waiwai paʻakikī AK (V-notch) ma luna o 100J.
(5) Maikaʻi weldability, liʻiliʻi weld māwae maʻamau, maʻamau ma mua o ka wiliwili me ka preheating, wiliwili ʻole me ka wela wela, hiki ke welded me 18-8 type austenitic stainless steel a i ʻole carbon steel a me nā mea like ʻole.
(6) ʻOi aku ka laulā o ka wela hana wela o ka duplex stainless steel i loaʻa ka chromium haʻahaʻa (18%Cr) ma mua o ka 18-8 austenitic stainless steel, a liʻiliʻi ke kū'ē. Hiki ke ʻōwili pololei ʻia e hana i ka pā kila me ka ʻole o ka forging. ʻOi aku ka paʻakikī o Duplex stainless steel i loaʻa i ka chromium kiʻekiʻe (25%Cr) ma mua o ka hoʻoheheʻe ʻana i ka wela austenitic stainless steel, hiki ke hana ʻia i nā huahana pā, paipu a me nā huahana uea.
(7) anu hana ma mua o 18-8 'ano austenitic kuhiliʻole kila hana hardening hopena ua nui, i loko o ka paipu, papa deformation ma ka mua pae, pono e pili stress nui i ka deformation.
(8) Hoʻohālikelike me ka austenitic stainless steel, kiʻekiʻe thermal conductivity, haʻahaʻa laina hoʻonui hoʻonui coefficient, kūpono no nā mea hana lining a me ka hana ʻana o ka pā hui. He kūpono hoʻi ia no ka hana ʻana i ke kumu o ka mea hoʻololi wela, a ʻoi aku ka maikaʻi o ka hoʻololi ʻana i ka wela ma mua o ka austenitic stainless steel.
(9) Loaʻa nā ʻano brittleness o ke kila kila chromium ferrite kiʻekiʻe, ʻaʻole pono e hoʻohana ʻia ma mua o 300C kūlana hana. ʻO ka haʻahaʻa o ka chromium maʻiʻo o ka duplex stainless steel, ʻoi aku ka liʻiliʻi o ka pōʻino o ka pae like brittle.
ʻO JB/T7746 "Compact Steel Valve" Ke hoʻolauna nei ka ʻoihana i ka hoʻolālā a me ka hana ʻana i kēia manawa no ka hana ʻana i ke kila liʻiliʻi anawaena o ko mākou ʻāina ʻo JB / T 7746-2006 "Compact Steel Valve", ua ʻae ʻia ka maʻamau a hoʻokuʻu ʻia ma Kepakemapa 14, 2006 , ʻO ka lā hoʻokō ʻo Malaki 1, 2007. Ma kahi o JB / T 7746-1995 "Hoʻemi ʻia ke anawaena forged steel Valve".
I. Manao
I kēia manawa, ʻo JB / T 7746-2006 "Compact Steel Valve" ka hoʻolālā a me ka hana ʻana o ke kila kila liʻiliʻi i hoʻopuka ʻia ma Kepakemapa 14, 2006, ʻo ka lā hoʻokō ʻo Malaki 1, 2007. , ma kahi o JB / T 7746-1995 "Hoʻemi ʻia ke anawaena Forged Steel Valve".
Hōʻike kēia loiloi i ka American Petroleum Institute API 602-1998 "Compact Steel Gate Valves for Flanged, Threaded, Welded and Extended Body Connections" a kūlike me ka API 602 i nā koi ʻenehana nui.
Hōʻike kēia maʻamau i ke ʻano o ke ʻano, nā koi ʻenehana, nā ʻano hoʻāʻo, nā lula nānā, ka mākaʻikaʻi ʻana a me ka hāʻawi ʻana i nā koi o nā ʻāpana kila i hoʻemi ʻia.
Pili kēia maʻamau i ka ʻīpuka, ka honua, ka hoʻokiʻekiʻe a me ke koʻi ʻana i nā kiwi. No ka wili kūloko a me ke kumu wiliwili kiwi me ke kaomi inoa PN18~PN250 a me ka nui inoa DN8~DN65; Hoʻopili pū ʻia i ke kaomi nominal PN18~PN250, ka nui inoa DN8~DN100 pili flange a me ka puʻu kuʻi kuʻi ʻana. Mea kūpono no ka wai, ka aila a me nā huahana pili i ka aila, ke kinoea maoli, ka mahu, etc.
Hoʻopili pū kēia maʻamau i nā kiwi me nā bellows i hoʻopaʻa ʻia i ka pilina, ke kaomi inoa PN16 ~ PN250, ka nui nominal DN8 ~ DN50.
ʻElua, JB / T 7746 "pili kila paʻa" ka ʻokoʻa nui ma waena o nā kūlana kahiko a me nā kūlana hou.
1, ka hoʻololi inoa, ke kumu JB / T7746-95 maʻamau i kapa ʻia ʻo "Hoʻemi ʻia ke anawaena forged steel valve", ka maʻamau hou JB / T 7746-2006 maʻamau i kapa ʻia ʻo "compact steel valve";
2. Hoʻonui i nā koi kauoha;
3. Hoʻohui i ka "Bellows Sealing Valve Structure", "Nominal Pressure PN250 Valve pressure-temperature Grade ma Appendix B" a me "Butt welding end Size ma Appendix C";
4, hoʻonui ke ʻano o ka noi i ke ʻano o ke kaomi ʻana i ka caliber a ʻo ke ʻano o ka uhi valve he bellows i hoʻopaʻa ʻia i ka valve, hoʻonui ke kaomi o ka valve i ka PN16, PN63, ke kaula i loko, e hana i ka hoʻopaʻa ʻana i ka valve e hoʻonui i ka DN8 a me DN65, flange. a hoʻonui ʻia ke anawaena wiliwili puʻupuʻu DN8, DN65, DN80, DN100;
5. Hoʻohui ʻia ke ʻano maʻamau o ka bellow sealing valve i ka moʻolelo;
6. ʻO ka helu kaomi-maha o ka valve PN250 i kuhikuhi ʻia ma ka Pauku 5.1 e like me ka Appendix B;
7. Ma ka Pauku 5.2 "Valve body connecting end", ua māhele ʻia ka ʻāpana i ʻehā mau ʻāpana e like me ke ʻano pili, a ua hoʻoponopono hou ʻia ka lōʻihi o ka lōʻihi o ka valve me ka socket welding a me ka pilina o loko. a ua kuhikuhi ʻia ka hopena wiliwili ʻana;
8. Ma ka Paukū 5.4, ua hoʻohui ʻia nā mea hoʻolako no nā bolts a me nā nati i hoʻohana ʻia i nā kino valve o nā mea like ʻole;
9. Ma ka Paukū 5.5, ua hoʻololi ʻia ke ʻano moʻolelo o nā ʻāpana, a ua hoʻohui ʻia nā lako o loko e pili ana i nā mea kino like ʻole, a me ka wehewehe ʻana o ke anawaena liʻiliʻi o loko o ke kumu valve a me nā hoʻolako o ke kaula o ka ua hoʻohui ʻia ke kumu valve;
10. Hoʻohui ʻia nā ʻike o ka nānā ʻana o ka hale hana a me ka hoʻāʻo ʻana ma 7.1 a me 7.2.
3. Nā ʻokoʻa nui ma waena o JB/T 7746-2006 a me API 602 maʻamau
ʻO JB / T 7746-2006 maʻamau e pili ana i ka API 602-1998 "Flanged, threaded, welded a me Kino elongated pili o ka pahu kila paʻa paʻa", ʻo kēia maʻamau a me API 602-1998 ka degere o ke kūlike ʻaʻole like, nā ʻokoʻa nui. penei:
1. Hoʻohālikelike ʻia me ka API 602-1998, hoʻohui kēia maʻamau i nā kīwaha honua a nānā i nā kiwi i nā ʻano pūnaewele valve;
2. Hoʻohālikelike ʻia me ka API 602-1998 maʻamau, ʻo nā ʻāpana o kēia maʻamau e hoʻohana i ka ʻōnaehana metric;
3. Hoʻohālikelike ʻia me ka API 602-1998, hoʻohui kēia maʻamau i nā koi no ka nui o ka socket a me nā hopena welding butt;
4. E pili ana i ka API 602-1998, ua hoʻohui kēia maʻamau i nā koi o ka lōʻihi no ka hoʻoheheʻe ʻana i ke kumu a me nā kiwi wili i loko;
5. Hoʻopau kēia maʻamau i ka ʻike o ka hoʻolōʻihi ʻana i ka ʻāpana pili kino valve ma ka maʻamau API 602-1998;
6. Hoʻopau kēia maʻamau i ka ʻike i hōʻailona ʻia ma ka maʻamau API 602-1998 a pili pono iā GB/T 12220 "Valve Marks";
7. ʻO ka maʻiʻo o ka papa 3 Pressure-temperature Ratings no nā ʻīpuka puka no ka papa 800 lb ma API 602-1998 ua hoʻoponopono ʻia;
8. Hoʻopau kēia maʻamau i ka kikoʻī kikoʻī ma ka Papa 8 o ka maʻamau API 602-1998 a me ka ʻike o ka maʻamau ASTM e pili ana;
9. Ua ma'alahi ka ma'i'o kumu ma ka Papa 10 o ka API 602-1998 i keia ma'amau;
10, hoʻopau kēia maʻamau i ka ʻike o ka helu sila a hoʻololi i ka helu sila ma ka Papa 11 o ka maʻamau API602-1998;
11. Hoʻopau kēia maʻamau i ka ʻike o ka hoʻouna ʻana i ka Paukū 6 ma ka maʻamau API602-1998 a ma kahi o ka JB/T 7928 "Nā Koina Hoʻolako Valve" maʻamau;
12. Ua hoʻopili pono ʻia kēia maʻamau mai ka Appendix A o API602-1998, "Nā Koina Hoʻohui no Compact Bellows Sealed Gate Valves", a hoʻokomo ʻia i loko o ke kino o ka maʻamau.
13. Hoʻohālikelike ʻia me API 602-1998, ua kuhikuhi ʻia ke ola paʻa paʻa o nā valves i kēia maʻamau;
14. E pili ana i ka API 602-1998 maʻamau, ua hoʻohui kēia maʻamau i nā koi no ka nānā ʻana a me ka hoʻāʻo ʻana i nā kīwaha bellows;
15 Hoʻohālikelike ʻia me API 602-1998, ua hoʻohui kēia maʻamau i nā koi no ka hoʻāʻo ʻana i ke ola kaomi static, ka nānā ʻana o ka hale hana a me ka nānā ʻana i nā ʻano valve;
Iv. ʻO nā pilikia e pono e makaʻala i ka wā e hoʻohana ai i kēia maʻamau
Hōʻike ka papa 6 i kēia maʻamau i ke anawaena liʻiliʻi o ke kumu, kahi e pili ana ke anawaena o ke ʻano o ka ʻāpana keʻa o ke kumu ma o ka paʻi.
Ka manawa hoʻouna: Nov-25-2022
