Usoro nyocha nke valvụ na kpachara anya tupu na mgbe echichi valvụ ihe ọdabara nkọwa ọkara

Usoro nyocha nke valvụ na kpachara anya tupu na mgbe echichi valvụ ihe ọdabara nkọwa nkọwa nke shei ule nrụgide nke valvụ bụ ugboro 1.5 nke nnukwu nrụgide ọrụ na-ekwe ka valvụ dị na 20 ℃, na ule akara bụ 1.1 ugboro nke nnukwu ikike ịrụ ọrụ. nrụgide mgbe valvụ dị na 20 ℃. Ogologo oge ule agaghị erughị nkeji ise. Okpomọkụ ule bụ 5 ~ 40 ℃. (4) Nkwenye nke valvụ nchekwa ga-adabere na ndokwa nke ụkpụrụ mba dị ugbu a na akwụkwọ nhazi maka ịtọ ngbanwe nrụgide na ule akara. Ekwesịrị ịdekọ valvụ nchekwa nke ọma, mechie ya, nye akụkọ nlele. (1) Ekwesịrị ịlele valvụ ahụ maka ịdị mma ọdịdị tupu echichi, valvụ ahụ kwesịrị ịdị na-emebi emebi, usoro mmeghe kwesịrị ịdị na-agbanwe agbanwe, valvụ ahụ ekwesịghị ịgbagha, mebie, mebie, na akara ahụ ga-ezu oke. (2) Ekwesịrị ịme ule nrụgide valve shei na akara akara, ule nrụgide valvụ shei na akara akara kwesịrị ịbụ mmiri dị ọcha dị ka ihe na-enyocha valvụ igwe anaghị agba nchara, ọdịnaya nke ion chloride na mmiri ekwesịghị gafere 25ppm. (3) nke shei ule mgbali nke valvụ bụ 1.5 ugboro nke ibu kwere na-arụ ọrụ nrụgide mgbe valvụ bụ na 20 ℃, na akara ule bụ 1.1 ugboro nke ibu kwere na-arụ ọrụ nrụgide mgbe valvụ bụ na 20 ℃. Ogologo oge ule agaghị erughị nkeji ise. Okpomọkụ ule bụ 5 ~ 40 ℃. (4) Nkwenye nke valvụ nchekwa ga-adabere na ndokwa nke ụkpụrụ mba dị ugbu a na akwụkwọ nhazi maka ịtọ ngbanwe nrụgide na ule akara. Ekwesịrị ịdekọ valvụ nchekwa nke ọma, mechie ya, nye akụkọ nlele. Valve ihe ọdabara ọkara nkọwa valvụ ihe ọdabara ọkara nkọwa: 1, valvụ a na-ejikarị ihe arụ ọrụ (1) Iron (1) isi awọ nkedo ígwè: dị ka HT200, HT250, wdg, adabara PN≤16, arụ ọrụ okpomọkụ n'etiti -10 ℃ ~ 100 ℃ mmanụ, n'ozuzu mmiri mmiri ọkara (mmiri, uzuoku, mmanụ ala ngwaahịa, wdg); PN≤10, na-arụ ọrụ okpomọkụ n'etiti -10 ℃ ~ 200 ℃ uzuoku, n'ozuzu ọdịdị nke gas, gas, amonia na ndị ọzọ media (ammonia, mmanya, aldehyde, ether, ketone, ester na ndị ọzọ na-erughị corrosive media). Ọ dịghị mma maka hydrochloric acid, nitric acid na mgbasa ozi ndị ọzọ. Ma enwere ike iji ya na sulfuric acid gbadoro anya, n'ihi na sulfuric acid nwere ike ịmepụta ihe nkiri dị ọcha n'elu igwe ya iji gbochie corrosion nke ígwè nkedo site na sulfuric acid gbanyere mkpọrọgwụ. (2) malleable nkedo ígwè: dị ka KTH350-10, KTH450-06, wdg, adabara PN≤25, arụ ọrụ okpomọkụ n'etiti -10 ℃ ~ 300 ℃ n'etiti uzuoku, n'ozuzu Njirimara nke gas na mmiri mmiri, mmanụ na ndị ọzọ na mgbasa ozi. Nguzogide corrosion ya yiri ígwè nkedo isi awọ. ③ Nodular nkedo ígwè: dị ka QT400-15, QT450-10, wdg, adabara PN≤25 arụ ọrụ okpomọkụ n'etiti -10 ℃ ~ 300 ℃ uzuoku, gas na mmanụ na ndị ọzọ na mgbasa ozi. Nguzogide corrosion ya siri ike, nwere ike ịrụ ọrụ na ntinye nke sulfuric acid, acid nitric, nnu acid. Mana ọ naghị eguzogide fluoric acid, alkali siri ike, hydrochloric acid na ferric chloride hot solution corrosion. Jiri iji zere okpomọkụ mberede, oyi mberede, ma ọ bụghị ya ga-agbaji. (4) ígwè nkedo nickel: nguzogide alkali karịa ígwè nkedo isi awọ, valvụ nkedo nke nodular; Ihe nkedo nke nickel bụ ihe valvụ dị mma maka itughari sulfuric acid, itughari hydrochloric acid na soda caustic. (2) carbon ígwè Carbon ígwè nwere WCA, WCB na WCC, adabara uzuoku, na-abụghị corrosive gas, mmanụ na yiri ngwaahịa na ndị ọzọ na mgbasa ozi na-arụ ọrụ okpomọkụ n'etiti -29 ~ 425 ℃. (3) igwe anaghị agba nchara The 304 usoro nke igwe anaghị agba nchara bụ n'ozuzu ọdabara na-arụ ọrụ okpomọkụ n'etiti -196 ℃ ~ 650 ℃ uzuoku, na-abụghị corrosive gas, mmanụ na metụtara ngwaahịa na ndị ọzọ na mgbasa ozi; Mgbasa mgbasa ozi na-arụ ọrụ na okpomọkụ n'etiti -30 ℃ na 200 ℃. Ọ nwere oke gas na-eguzogide, iguzogide nitric acid na ndị ọzọ oxidizing media, kamakwa alkali, mmiri, nnu, organic acid na ndị ọzọ organic ogige corrosion. Ma ọ dịghị eguzogide sulfuric acid, hydrochloric acid na ndị ọzọ na-abụghị oxidizing acid corrosion, na-adịghị eguzogide ọgwụ ihicha hydrogen chloride, oxidizing chloride na oxalic acid, lactic acid na ndị ọzọ organic acid. ② Na ndabere nke 304 na 2% ~ 3% molybdenum 316 usoro igwe anaghị agba nchara, ya corrosion eguzogide dị mma karịa 304 usoro igwe anaghị agba nchara, ọ dị mma karịa chromium nickel igwe anaghị agba nchara na-abụghị oxidizing acid na-ekpo ọkụ organic acid, chloride corrosion eguzogide. karịa chromium nickel igwe anaghị agba nchara, nguzogide corrosion dị mma. Usoro igwe anaghị agba nchara 321,347 nwere titanium ma ọ bụ niobium nwere nguzogide siri ike na corrosion intergranular. ④ Nwere elu chromium, elu nickel 904L usoro igwe anaghị agba nchara, ya corrosion eguzogide bụ elu karịa nkịtị igwe anaghị agba nchara, ike ga-eji na-emeso sulfuric acid, phosphoric acid, agwakọta acid, sulfite, organic acid, alkali, nnu ngwọta, hydrogen sulfide, wdg, na ọbụna nwere ike iji mee ihe na ụfọdụ ntinye nke oge okpomọkụ dị elu. Ma ọ dịghị eguzogide ọgwụ hydrochloric acid ma ọ bụ na-ekpo ọkụ, mmiri fluorine, chlorine, bromine, ayodiin, aqua regia corrosion. (4) ọla kọpa alloy ọla kọpa alloy bụ tumadi adabara PN≤25, arụ ọrụ okpomọkụ n'etiti -40 ℃ ~ 180 ℃ oxygen, seawater ọkpọkọ valves, o nwere ezi corrosion iguzogide mmiri, oké osimiri, a dịgasị iche iche nke nnu ngwọta, organic okwu. Ọ nwere ezigbo nguzogide corrosion na sulfuric acid, phosphoric acid, acetic acid na dilute hydrochloric acid na-enweghị oxygen ma ọ bụ oxidant, ma nwee ezigbo nguzogide alkali. Ma ọ dịghị eguzogide corrosion nke nitric acid, ndọpụ sulfuric acid na ndị ọzọ oxidizing acid, na ọ dịghị eguzogide corrosion nke a wụrụ awụ metal, sọlfọ na sulfide. Zere kọntaktị na amonia, nke nwere ike ime ka mgbaji mgbawa nke ọla kọpa na ọla kọpa. Ekwesịrị ịṅa ntị na nhọrọ nke ọla kọpa ọla kọpa, nguzogide corrosion ya nwere ihe dị iche. (5) Aluminom alloy Aluminom alloy nwere ezigbo corrosion eguzogide ike oxidizing lekwasị nitric acid na ike idi organic acids na ihe mgbaze. Ma n'ibelata ọkara, acid siri ike, nguzogide corrosion siri ike. Ka aluminom dị ọcha karị, ọ ka mma ka ọ na-emegide corrosion, mana ike ya na-ebelata ma enwere ike iji ya naanị maka valves nrụgide dị ala ma ọ bụ akwa valve. (6) Titanium alloy Titanium alloy bụ tumadi adabara PN≤25, arụ ọrụ okpomọkụ n'etiti -30 ℃ ~ 316 ℃ mmiri mmiri, chloride, oxidizing acid, organic acid, alkali na ndị ọzọ media. Titanium bụ ọla na-arụ ọrụ ma nwee ike ịmepụta ihe nkiri oxide nwere ezigbo nguzogide corrosion na ụlọ okpomọkụ. Ọ bụ ike nke mmiri oké osimiri, dị iche iche chloride na hypochlorite, chlorine, oxidizing acid, organic acid, alkali na ndị ọzọ corrosion. Mana ọ naghị eguzogide ọgwụ na-ebelata acid dị ọcha, dị ka sulfuric acid, hydrochloric acid corrosion, kama iguzogide corrosion acid oxidizing. valvụ Titanium nwere ezigbo iguzogide mbuze oghere. Ma na anwụrụ ọkụ nitric acid, chloride, methanol na mgbasa ozi ndị ọzọ ga-emepụta corrosion nrụgide. (7) Zirconium alloy Zirconium bụkwa nke ígwè na-arụ ọrụ, ọ nwere ike ịmepụta ihe nkiri oxide nso, ọ nwere ezigbo corrosion iguzogide nitric acid, chromic acid, alkali, alkali gbazere, mmiri nnu, urea, mmiri mmiri, ma ọ bụghị hydrofluoric acid, gbadoro anya. sulfuric acid, aqua regia corrosion, na-adịghị eguzogide ọgwụ chlorine mmiri na oxidizing metal chloride corrosion. (8) A na-ebute valvụ seramiiki ka ọ bụrụ ihe mbụ na silicon dioxide fusion sintering, dị ka zirconia, alumina, silicon nitride, wdg, na mgbakwunye na inwe oke iyi mkpuchi mkpuchi, nguzogide okpomọkụ, arụmọrụ mkpuchi, nwekwara nnukwu mgbochi corrosion. ike, na mgbakwunye na enweghị oxygen fluorine acid, fluosilicic acid na alkali na-eguzogide ọgwụ, nwere ike ikpo ọkụ concentrated nitric acid, hydrochloric acid, aqua regia, nnu ngwọta na organic solvents dị ka ọkara, n'ozuzu na-emetụta PN na akara 6 ma ọ bụ obere. Ụdị valvụ a dị ka iji ihe ndị ọzọ eme ihe, mgbe ị na-ahọrọ, kwesịrị ịtụle nguzogide corrosion nke ihe ndị ọzọ. (9) Fiber iko plastik mesiri ike na nguzogide corrosion nke FRP dị iche na nrapado ya. Enwere ike iji Epoxy resin FRP mee ihe na hydrochloric acid, phosphoric acid, sulfuric acid dilute na ụfọdụ acid organic; Nguzogide corrosion nke phenolic fiber plastics mesiri ike ka mma. Furan FRP nwere ezigbo nguzogide alkali, nguzogide acid na nguzogide corrosion zuru oke, nke dabara adaba maka pipeline PN≤16. (10) Plastics Plastic valves bụ ihe e ji mara site na nguzogide corrosion siri ike, na ọbụna valvụ ígwè enweghị ike inwe uru. Ọdabara na PN≤6 pipeline, nwere ụdị plastik dị iche iche, ọdịiche nguzogide corrosion ya dị ukwuu. (1) Naịlọn, nke a makwaara dị ka polyamide, ọ bụ thermoplastic, nwere ezigbo nguzogide corrosion. Ọ nwere ike iguzogide corrosion nke dilute acid, nnu na alkali, ma nwee ezigbo mgbochi corrosion na hydrocarbon, ketone, ether, ester na mmanụ. Ma ọ bụghị iguzogide acid siri ike, acid oxidizing, phenol na formic acid corrosion. (2) POLYvinyl chloride: polyvinyl chloride bụ plastik thermoplastic, nwere ezigbo nguzogide corrosion. Acid, alkali, nnu, organic okwu. Ọ naghị eguzogide ọgwụ nitric acid, fuming sulfuric acid, acetic anhydride, ketone, halogenated, aromatic na corrosion ndị ọzọ. (3) POLYETHYLENE: polyethylene nwere ezigbo nguzogide corrosion, ọ nwere ezigbo mgbochi corrosion na hydrochloric acid, dilute sulfuric acid, hydrofluoric acid na ndị ọzọ na-abụghị oxidizing acid yana itughari nitric acid, alkali, nnu ngwọta na organic mgbaze na ụlọ okpomọkụ. Ma ọ dịghị eguzogide ọgwụ nitric acid, sulfuric acid na ndị ọzọ siri ike oxidant corrosion. (4) polypropylene: polypropylene bụ thermoplastic, nguzogide corrosion ya yiri polyethylene, dịtụ mma karịa polyethylene. Ọ nwere ike iguzogide ọtụtụ organic acid, inorganic acid, alkali, nnu, mana ka nitric acid, fuming sulfuric acid, chlorsulfonic acid na ndị ọzọ siri ike oxidizing acid iguzogide corrosion adịghị mma. ⑤ Phenolic plastics: phenolic plastics nwere ike iguzogide corrosion nke hydrochloric acid, itughari sulfuric acid, phosphoric acid na ndị ọzọ na-abụghị oxidizing acid, nnu ngwọta. Ma ọ bụghị eguzogide nitric acid, chromic acid na ndị ọzọ siri ike oxidizing acid, alkali na ụfọdụ organic mgbaze corrosion. ⑥ Chlorinated polyether, nke a makwaara dị ka ether polychlorinated, bụ linear, nnukwu crystallinity nke thermoplastics. Ọ nwere ezigbo nguzogide corrosion, * dị ala na plastik fluorine. Ọ nwere ike itinye sulfuric acid, nitric acid gbadoro anya n'èzí ụdị acid niile, alkali, nnu na ọtụtụ ihe mgbaze organic corrosion, mana ọ naghị eguzogide mmiri chlorine, fluorine, bromine corrosion. ⑦ Polytrifluorovinyl chloride: ya na ndị ọzọ fluorine plastik, nwere magburu onwe corrosion eguzogide na ndị ọzọ Njirimara, corrosion eguzogide ubé ala karịa ptfe. Ọ nwere ezigbo corrosion eguzogide organic acid, inorganic acid, alkali, nnu na a dịgasị iche iche nke organic mgbaze. Ụfọdụ ihe mgbaze nwere halogen na oxygen na-eme ka ha zaa na oke okpomọkụ. Ọ na-adịghị eguzogide elu okpomọkụ fluorine, fluoride, wụrụ awụ alkali, lekwasị nitric acid, aromatic, fuming nitric acid, gbazere alkali metal, wdg Polytetrafluoroethylene: polytetrafluoroethylene nwere nnọọ magburu onwe corrosion eguzogide, ya na mgbakwunye na nke a wụrụ awụ metal lithium, potassium, sodium , chlorine trifluoride, oxygen trifluoride na elu okpomọkụ, elu eruba ọnụego nke mmiri mmiri fluorine, fọrọ nke nta niile corrosion nke chemical media, mwepu bụ na o nwere oyi eruba. (11) Lining N'ihi ike dị ala nke rọba, ọtụtụ valves na-eji ihe ígwè eme shei ahụ, na plastik, akwa rọba. Akara valvụ na-adịkarị mma maka pipeline PN≤16, nwere ihe mkpuchi dị iche iche, nguzogide okpomọkụ ya, nguzogide corrosion abụghị otu. Ihe mkpuchi rọba: Nguzogide corrosion nke mkpuchi rọba bụ otu ihe ahụ kwekọrọ na plastik ndị dị n'elu. Otú ọ dị, mgbe ị na-ahọrọ, a ga-atụle nguzogide corrosion nke ihe ndị ọzọ a na-eji na valvụ plastik lined. Ihe mkpuchi roba: rọba dị nro, ọtụtụ valvụ na-eji mkpuchi rọba mee ka nguzogide corrosion na akara akara nke valvụ ahụ. Nguzogide corrosion nke roba na-adịgasị iche iche na ụdị roba dị iche iche. Mgbe vulcanization nke eke roba nwere ike idi na-abụghị oxidizing acid, alkali, nnu corrosion, ma ọ bụghị na-eguzogide ọgwụ ike oxidants, dị ka nitric acid, chromic acid, lekwasị sulfuric acid corrosion, nakwa na-adịghị eguzogide mmanụ ala ngwaahịa na ụfọdụ organic solvents corrosion: ya mere: , rọba sịntetịt ji nwayọọ nwayọọ dochie rọba eke. NBR na roba sịntetik nwere mma mmanụ na-eguzogide, ma ọ dịghị eguzogide oxidation acid, aromatic hydrocarbon, ester, ketone, ether na ndị ọzọ siri ike mgbaze corrosion; Fluorine roba nwere ezigbo nguzogide corrosion, nwere ike iguzogide ụdị acid niile, alkali, nnu, ngwaahịa mmanụ ala, hydrocarbons, wdg, mana nguzogide ihe mgbaze adịghị mma dị ka plastik fluorine; Enwere ike iji roba polyether na mmiri, mmanụ, amonia, alkali na mgbasa ozi ndị ọzọ. Ngwongwo ndu: ndu ​​bụ ígwè na-arụ ọrụ, ma n'ihi ihe dị nro ya, a na-ejikarị ya eme ihe dị ka mkpuchi nke valves pụrụ iche. Ihe nkiri ngwaahịa corrosion nke ndu bụ oyi akwa nchebe siri ike. Ọ bụ ihe a ma ama na-eguzogide sulfuric acid. Ọ nwere nnukwu nguzogide corrosion na phosphoric acid, chromic acid, carbonic acid na ngwọta na-anọpụ iche, mmiri mmiri na mgbasa ozi ndị ọzọ, ma ọ naghị eguzogide ọgwụ alkali na hydrochloric acid corrosion, ọ dịghịkwa mma maka ịrụ ọrụ na ngwaahịa corrosion ha.