2507 duplex stainless steel valve e sebelisa JB/T7746 “Compactbelofo ea tšepe” kenyelletso ea maemo a indasteri
Khamphani ea rona e sebetsa ka ho khetheha tlhahisong ea metsi a leoatle 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 heke valve 2507 duplex stain stain 2507 duplex stain stain filthara ea mofuta oa 2507 duplex stainless steel filter 2205 check valve 2507 check valve le lihlahisoa tse ling
Metsi a leoatle 2205 duplex steel valve molybdenum duplex tšepe e sa hloekang e na le khanyetso e ntle ea chloride stress corrosion tlas'a khatello e tlase. Ka kakaretso, mofuta oa 18-8 oa mofuta oa austenitic stainless steel o na le monyetla oa ho hatella ho robeha ha corrosion ka tharollo ea chloride e sa nke lehlakore ka holimo ho 60C. Li-exchanger tsa mocheso, li-evaporator le lisebelisoa tse ling tse entsoeng ka mofuta ona oa tšepe e sa hloekang ka har'a indasteri ea trace chloride le hydrogen sulfide li na le tšekamelo ea ho hlahisa khatello ea maikutlo ea ho robeha ha corrosion fracture, athe duplex stainless steel e na le khanyetso e ntle.
(2) Metsi a leoatle 2205 duplex steel valve molybdenum duplex tšepe e sa hloekang e na le khanyetso e ntle ea kutu. Monyetla oa bohlokoa oa likoti oa duplex tšepe e sa hloekang o tšoana le oa austenitic tšepe e sa hloekang e nang le khanyetso e tšoanang ea pitting (PRE = Cr% + 3.3Mo% + 16N%). Khanyetso ea kutu ea tšepe e sa hloekang ea duplex le tšepe ea austenitic e ts'oana le ea AI 316L. Khanyetso ea kutu ea tšepe e phahameng ea chromium duplex e nang le 25% Cr, haholo-holo naetrojene, e phahame ho feta ea AI 316L.
(3) Ka khanyetso e ntle ea kutu ho mokhathala le ts'ebetso ea ho roala. Maemong a mang a mahareng a senyang, a loketseng tlhahiso ea lipompo, li-valve le lisebelisoa tse ling tsa matla.
(4) Lintho tse ntle tse akaretsang tsa mochini. Matla a phahameng le matla a mokhathala, matla a tlhahiso ke 18-8 mofuta oa tšepe e sa hloekang ea austenitic makhetlo a 2. Boemong bo tiileng ba tharollo, bolelele bo fihla ho 25%, 'me boleng ba boima ba AK (V-notch) bo ka holimo ho 100J.
(5) Weldability e ntle, tšekamelo e nyane e chesang ea petso, hangata pele ho tjheseletsa ntle le preheating, tjheseletsa ntle le kalafo ea mocheso, e ka tšeloa ka 18-8 mofuta oa tšepe e sa hloekang ea austenitic kapa tšepe ea carbon le tse ling tse sa tšoaneng.
(6) Mocheso oa mocheso o sebetsang oa tšepe ea duplex e nang le chromium e tlaase (18% Cr) e pharaletse ho feta ea 18-8 austenitic tšepe e sa hloekang, 'me ho hanyetsa ho nyane. E ka phuthoa ka kotloloho ho hlahisa poleiti ea tšepe ntle le ho forging. Tšepe e sa hloekang ea Duplex e nang le chromium e phahameng (25% Cr) e thata hanyane ho feta ts'ebetso ea mocheso ea tšepe e sa hloekang ea austenitic, e ka hlahisoa lihlahisoa tsa poleiti, li-tube le terata.
(7) batang ho sebetsa ho feta 18-8 mofuta austenitic tšepe e sa jeleng paate sebetsa e thatafatsa phello e khōlō, ka tube, poleiti deformation sethaleng sa pele, ho hlokahala ho sebelisa khatello ea kelello e khōloanyane ho deformation.
(8) Ha ho bapisoa le tšepe e sa hloekang ea austenitic, conductivity e phahameng ea mocheso, coefficient e tlaase ea ho atolosa linear, e loketseng bakeng sa lisebelisoa tsa lisebelisoa le tlhahiso ea poleiti e kopantsoeng. E boetse e loketse ho etsa motsoako oa tube oa mocheso oa mocheso, 'me katleho ea ho fetisa mocheso e phahame ho feta ea austenitic stainless steel.
(9) Ho ntse ho e-na le mefuta e sa tšoaneng ea brittleness ea tšepe e sa hloekang ea chromium ferrite, e sa lokelang ho sebelisoa ho feta maemo a sebetsang a 300C. Ha karolo ea chromium e ka tlase ho tšepe e sa hloekang ea duplex, e fokotsa kotsi ea karolo e lekanang ea brittle.
JB/T7746 "Compact Steel Valve" Tekanyetso ea indasteri e hlahisa moralo le maemo a hona joale a ho etsa li-valve tse nyane tsa tšepe naheng ea rona ke JB/T 7746-2006 "Compact Steel Valve", maemo a amohetsoe mme a lokolloa ka la 14 Loetse 2006. , letsatsi la ts'ebetsong ke la 1 March, 2007. Ho e-na le JB / T 7746-1995 "Bophara bo fokotsehileng bo entsoeng ka tšepe ea Valve".
I. Kakaretso
Hajoale, moralo le maemo a tlhahiso ea li-valve tse nyane tse entsoeng ka tšepe naheng ea rona ke JB/T 7746-2006 "Compact Steel Valve", tekanyetso ena e amohetsoe mme e fanoe ka la 14 Loetse 2006, letsatsi la ts'ebetso ke la 1 Hlakubele 2007. , sebakeng sa JB/T 7746-1995 "Bophahamo bo fokotsehileng bo Fokotseng Valve ea tšepe e entsoeng".
Phetolelo ena e bua ka Setsi sa Amerika sa Petroleum API 602-1998 "Compact Steel Gate Valves for Flanged, Threaded, Welded and Extended Body Connections" 'me e lumellana le API 602 litlhoko tse kholo tsa tekheniki.
Tekanyetso ena e totobatsa mofuta oa sebopeho, litlhoko tsa tekheniki, mekhoa ea liteko, melao ea tlhahlobo, ho tšoaea le litlhoko tsa phepelo ea li-valve tsa tšepe tse fokotsehileng.
Tekanyetso ena e sebetsa ho heke, globe, lift le swing li-check valves. Bakeng sa khoele ea ka hare le li-valve tsa socket welding tse nang le khatello ea lebitso PN18~PN250 le boholo ba lebitso la DN8~DN65; E boetse e sebetsa ho khatello ea lebitso la PN18 ~ PN250, boholo ba lebitso la DN8 ~ DN100 khokahanyo ea flange le valve ea ho hokahanya ha butt. Sebaka se sebetsang bakeng sa lihlahisoa tse amanang le metsi, peterole le petroleum, khase ea tlhaho, mouoane, joalo-joalo.
Tekanyetso ena e sebetsa le ho li-valve tse nang le li-bellows tse tiisitsoeng, khatello ea lebitso PN16~PN250, boholo ba lebitso la DN8~DN50.
Tse peli, JB/T 7746 "compact steel valve" phapang e kholo lipakeng tsa litekanyetso tsa khale le tse ncha
1, lebitso le fetoha, tekanyetso ea pele ea JB/T7746-95 e bitsoang "Belofo e fokotsehileng ea tšepe e entsoeng ka bophara", tekanyetso e ncha ea JB/T 7746-2006 e bitsoang "compact steel valve";
2. E ekelitse litlhoko tsa taelo;
3. Eketsa "Bellows Sealing Valve Structure", "Nominal Pressure PN250 Valve khatello-mocheso Kereiti ea Sehlomathiso B" le "But welding end Size in Appendix C";
4, sebaka sa ts'ebeliso se eketsa boholo ba sekhahla sa khatello, 'me sebopeho sa sekoaelo sa valve ke li-valve tse tiisitsoeng, sekhahla sa khatello ea valve se eketsa PN16, PN63, khoele e ka hare, ho etsa hore bophara ba valve ea welding bo eketsa DN8 le DN65, flange. le butt tjheseletsa bophara bophara eketsa DN8, DN65, DN80, DN100;
5. Sebopeho se tloaelehileng sa bellows sealing valve se kenyelletsoa tšōmong;
6. Tekanyo ea khatello ea mocheso oa valve ea PN250 e boletsoeng Karolong ea 5.1 e tla lumellana le Sehlomathiso sa B;
7. Karolong ea 5.2 "Qetello ea ho hokahanya ha 'mele oa valve", karolo e arotsoe likarolo tse' nè ho ea ka foromo ea ho hokahanya, 'me boholo ba bolelele ba sebopeho sa valve e nang le socket welding le khokahanyo ea ka hare e nchafatsoa, 'me boholo ba socket welding. le butt welding end e hlalositsoe;
8. Karolong ea 5.4, ho eketsoa litokisetso bakeng sa liboutu le linate tse sebelisoang 'meleng oa li-valve tsa lisebelisoa tse fapaneng;
9. Karolong ea 5.5, tatellano ea litlaleho tsa likarolo e ile ea fetoloa, 'me litokisetso tsa lisebelisoa tsa ka hare tse lumellanang le lisebelisoa tse fapaneng tsa' mele li ile tsa kenyelletsoa, hammoho le tlhaloso ea bophara bo bonyenyane bo ka hare ba sekhahla sa valve le litokisetso tsa khoele ea li-valve stem li ile tsa eketsoa;
10. Likahare tsa tlhahlobo ea khale ea feme le tlhahlobo ea foromo li kenyellelitsoe ho 7.1 le 7.2.
3. Phapang e kholo lipakeng tsa litekanyetso tsa JB/T 7746-2006 le API 602
JB/T 7746-2006 standard e lumellana le API 602-1998 "Flanged, threaded, welded and Body elongated connection of the compact steel heke valve", tekanyetso ena le API 602-1998 tekanyo ea ho tsitsa ha e lekane, liphapang tse kholo li teng. ka mokoa o latelang:
1. Ha ho bapisoa le API 602-1998, tekanyetso ena e eketsa li-valve tsa globe le ho hlahloba li-valve ho mefuta ea marang-rang;
2. Ha ho bapisoa le maemo a API 602-1998, li-unit tse maemong ana li amohela sistimi ea metric;
3. Ha ho bapisoa le API 602-1998, tekanyetso ena e eketsa litlhoko tsa boholo ba socket le butt welding ends;
4. Ho ipapisitsoe le API 602-1998, tekanyetso ena e eketsa litlhoko tsa bolelele ba sebopeho bakeng sa welding ea socket le li-valve tse kentsoeng ka hare;
5. Tekanyetso ena e hlakola litaba tsa karolo e holisang ea li-valve tsa 'mele ho standard API 602-1998;
6. Tekanyetso ena e hlakola litaba tse tšoailoeng ho API 602-1998 standard mme ho fapana le moo e bua ka ho toba ho GB/T 12220 "Valve Marks";
7. Likahare tsa Lethathamo la 3 Litekanyo tsa Mocheso oa Khatello bakeng sa Li-Valves tsa heke bakeng sa sehlopha sa 800 lb ho API 602-1998 li lokisitsoe;
8. Tekanyetso ena e hlakola lintlha tsa thepa ho Lethathamo la 8 la API 602-1998 standard le litaba tsa maemo a tšoanang a ASTM;
9. Likahare tsa stem material ho Lethathamo la 10 la API 602-1998 li nolofalitsoe ka nepo ho latela maemo ana;
10, tekanyetso ena e hlakola litaba tsa nomoro ea tiiso le nomoro ea tiiso ho Lethathamo la 11 la API602-1998 standard;
11. Tekanyetso ena e hlakola litaba tsa thomello ea Article 6 ho API602-1998 standard mme ho e-na le hoo e bua ka litšupiso tsa JB/T 7928 "Requirements Supply Requirements";
12. Tekanyetso ena e khutsufalitsoe ka nepo ho tsoa ho Sehlomathiso A sa API602-1998, "Litlhoko tse Eketsehileng bakeng sa Compact Bellows Seled Gate Valves", 'me li kenyelelitsoe sehlopheng sa maemo.
13. Ha ho bapisoa le API 602-1998, bophelo ba khatello e tsitsitseng ea li-valve bo hlalositsoe ka mokhoa ona;
14. Ho ipapisitse le maemo a API 602-1998, tekanyetso ena e eketsa litlhoko tsa tlhahlobo le tlhahlobo ea li-valve tsa bellows;
15 Ha e bapisoa le API 602-1998, tekanyetso ena e eketsa litlhoko tsa tlhahlobo ea bophelo ba khatello e tsitsitseng, tlhahlobo ea fektheri le tlhahlobo ea mofuta oa li-valve;
Iv. Mathata a lokelang ho eloa hloko ha ho sebelisoa tekanyetso ena
Letlapa la 6 boemong bona le totobatsa bophara bo bonyenyane ba kutu, moo bophara ba stem bo bolelang bophara ba sebaka sa sefapano sa kutu ka ho paka.
Nako ea poso: Nov-25-2022
