Muiyo fluid conveying system, vharuvhu chinhu chakakosha chekudzora chikamu, icho chinonyanya kuve nemabasa ekudzora, kutsauka, anti-backflow, kucheka-kubvisa, uye shunt. Ivhavha inoshandiswa zvakanyanya mumaindasitiri uye munharaunda. High tembiricha vharafu imhando inowanzoshandiswa mavharuvhu. Zvinhu zvaro zvakananga ndezvizvi: kushanda kwakanaka kwekudzima, kudzika kwakadzika kunogona kuitwa; zvakanaka weldability; kubatwa kwakanaka kwemhedzisiro, zvakaoma kuikuvadza nechisimba; Hasha brittleness inowanzova shoma uye zvichingodaro. Kune akati wandei marudzi epamusoro-tembiricha mavharuvhu. Izvo zvinowanzoitika ndezvekupisa kwepamusorobutterfly valves, kutonhora kwakanyanya bhora mavharuvhu, mafirita anopisa zvakanyanya, uye tembiricha yepamusoro gedhi mavharuvhu.

High-tembiricha mavharuvhu anosanganisira yakakwirira-tembiricha gedhi mavharuvhu, yakakwirira-tembiricha akavhara-kure mavharuvhu, yakakwirira-tembiricha cheki mavharuvhu, yakakwirira-tembiricha bhora mavharuvhu, yakakwirira-tembiricha butterfly mavharuvhu, yakakwirira-tembiricha tsono mavharuvhu, yakakwirira-tembiricha throttle mavharuvhu, uye high-tembiricha kudzvinyirira kuderedza mavharuvhu. Pakati pavo, iyo inonyanya kushandiswa igedhi mavharuvhu, globe mavharuvhu, cheki mavharuvhu, bhora mavharuvhu uye butterfly mavharuvhu.

Tembiricha yepamusoro yekushanda mamiriro anosanganisira sub-yakakwirira tembiricha, yakanyanya tembiricha Ⅰ, yakanyanya tembiricha Ⅱ, yakanyanya tembiricha Ⅲ, yakanyanya tembiricha Ⅳ, uye yakanyanya tembiricha Ⅴ, iyo inounzwa zvakasiyana pazasi.

1. Sub-yakakwirira tembiricha

Sub-yakakwirira tembiricha inoreva kuti tembiricha yekushanda yevhavha iri munharaunda ye325 ～425 ℃. Kana iyo yepakati iri mvura uye chiutsi, WCB, WCC, A105, WC6 uye WC9 inonyanya kushandiswa. Kana iyo yepakati iri sulfur-ine mafuta, C5, CF8, CF3, CF8M, CF3M, nezvimwewo, izvo zvinopikisa sulfide corrosion, inonyanya kushandiswa. Iwo anonyanya kushandiswa mumhepo uye kumanikidza kudzikisa michina uye kunonoka midziyo yekubikira munzvimbo dzekunatsa. Panguva ino, mavharuvhu akagadzirwa neCF8, CF8M, CF3 uye CF3M haashandiswe pakupokana kweasidhi mhinduro, asi anoshandiswa kune zvigadzirwa zvemafuta zvine sarufa uye mapaipi emafuta negesi. Mumamiriro ezvinhu aya, tembiricha yepamusoro yekushanda yeCF8, CF8M, CF3 uye CF3M i450 ° C.

2. Kupisa kwepamusoro Ⅰ

Kana tembiricha yekushanda yevhavha iri 425 ～550 ℃, ikirasi yepamusoro-yekushisa I (inonzi PI kirasi). Chinhu chikuru chePI giredhi vharafu ndeye "yepamusoro tembiricha Ⅰ giredhi yepakati kabhoni chromium nickel isingawanzo pasi titanium yemhando yepamusoro inodzivirira kupisa simbi" ine CF8 seyakanyanya chimiro muASTMA351 chiyero. Nekuti iyo PI giredhi izita rakakosha, iyo pfungwa yekupisa-yepamusoro simbi isina tsvina (P) inosanganisirwa pano. Naizvozvo, kana iyo svikiro yekushanda iri mvura kana chiutsi, kunyangwe simbi yekupisa WC6 (t≤540 ℃) kana WC9 (t≤570 ℃) inogona kushandiswawo, nepo zvigadzirwa zvemafuta zvine sarufa zvinogona kushandiswa zvakanyanya-tembiricha simbi. C5 (ZG1Cr5Mo), asi Ivo havagone kunzi PI-kirasi pano.

3. Kupisa kwepamusoro II

Iyo tembiricha yekushanda yevhavha ndeye 550 ～650 ℃, uye inorondedzerwa sekushisa kwakanyanya Ⅱ (inonzi P Ⅱ). PⅡ kirasi yepamusoro tembiricha vharafu inonyanya kushandiswa mune inorema mafuta catalytic cracking mudziyo wekunatsa. Iyo ine yakakwira tembiricha yekupfeka-inodzivirira gedhi valve inoshandiswa mumatatu-kutenderera nozzle uye zvimwe zvikamu. Chinhu chikuru chePⅡ giredhi vharafu "yakakwirira tembiricha Ⅱ giredhi yepakati kabhoni chromium nickel isingawanzo pasi titanium tantalum yakasimbisa kupisa-inodzivirira simbi" ine CF8 seyakakosha chimiro muASTMA351 mwero.

4. Kupisa kwepamusoro III

Iyo tembiricha yekushanda yevhavha ndeye 650 ～730 ℃, uye inorondedzerwa seyepamusoro tembiricha III (inonzi PⅢ). PⅢ kirasi yepamusoro tembiricha mavharuvhu anonyanya kushandiswa muhombe inorema inorema catalytic kupaza zvikamu mumafineries. Chinhu chikuru chePⅢ kirasi yepamusoro tembiricha vharafu ndiyo CF8M yakavakirwa paASTMA351.

5.Kupisa kwepamusoro Ⅳ

Iyo tembiricha yekushanda yevhavha ndeye 730 ～816 ℃, uye yakaverengerwa setembiricha yepamusoro IV (inonzi PIV kwenguva pfupi). Muganhu wepamusoro wekushisa kwekushanda kwePIV valve ndeye 816 ℃, nokuti kupisa kwepamusoro kunopiwa nehuwandu hweASMEB16134 pressure-temperature grade yakasarudzwa nokuda kwekugadzira valve ndeye 816 ℃ (1500υ). Mukuwedzera, mushure mokunge tembiricha yekushanda inopfuura 816 ° C, simbi iri pedyo nekupinda munzvimbo yekushisa yekugadzira. Panguva ino, simbi iri muplastic deformation zone, uye simbi ine plasticity yakanaka, uye zvakaoma kumirisana nepamusoro pekushanda kumanikidza uye simba rekuita uye kuti irege kukanganisa. The main material of the P Ⅳ valve is CF8M in the ASTMA351 standard as the basic shape “high temperature Ⅳ medium carbon chromium nickel molybdenum rare earth titanium tantalum reinforced heat-resistant steel”. CK-20 uye ASTMA182 standard F310 (kusanganisira C content ≥01050%) uye F310H kupisa-resistain stainless simbi.

6, tembiricha yepamusoro Ⅴ

Tembiricha yekushanda yevharuvhu yakakwira kupfuura 816 ℃, inonzi PⅤ, PⅤ yakakwira tembiricha vharafu (yekuvhara-kuvhavha mavharuvhu, kwete kudzora butterfly mavharuvhu) inofanira kutora yakakosha nzira dzekugadzira, senge lining insulation lining kana mvura kana gasi Kutonhora can. chengetedza kushanda kwakajairika kwevhavha. Nokudaro, muganhu wepamusoro wekushanda kwekushanda kwePⅤ kirasi yepamusoro yevhavhavha yekushisa haina kutaurwa, nokuti kutonhora kwekushanda kwevhavhavha yekudzora hakungogadziriswi chete nezvinhu, asi nenzira dzakakosha dzekugadzira, uye nheyo yekutanga yekugadzira nzira. zvakafanana. PⅤ giredhi yakakwira tembiricha vharafu inogona kusarudza zvinhu zvine musoro zvinogona kusangana nevharuvhu zvinoenderana neayo svikiro rekushanda uye kushanda nesimba uye yakakosha nzira dzekugadzira. Muchikamu chePⅤ chepamusoro tembiricha yevhavha, kazhinji iyo flapper kana butterfly valve ye flue flapper valve kana butterfly valve inowanzosarudzwa kubva kuHK-30 uye HK-40 high-temperature alloys muASTMA297 standard. Corrosion inodzivirira, asi isingakwanise kumirisana nekuvhunduka uye mitoro yakakwira.