Mechanical teeb ntawm fins yog nqa tawm ntawm lub tshuab fin

Mechanical teeb ntawm fins yog nqa tawm ntawm lub tshuab fin

Raws li cov khoom sib pauv cua sov, cov raj finned ua haujlwm nyob rau hauv high-temperature flue gas mob rau lub sij hawm ntev. Piv txwv li, finned raj siv nyob rau hauv boiler heat exchangers yog siv nyob rau hauv hnyav ib puag ncig nrog kub, siab siab, thiab corrosive cua. Qhov no yuav tsum tau finned tubes kom muaj cov ntsuas kev ua haujlwm siab.

1) Kev tiv thaiv corrosion

2) Anti hnav kev ua haujlwm

3) Kev tiv thaiv qis

4) Kev ruaj ntseg siab

5) Muaj peev xwm tiv thaiv plua plav

Mechanical teeb ntawm fins yog nqa tawm ntawm lub tshuab fin. Vim lub fact tias lub fin yog pressed nyob rau hauv lub mechanical impact force los yog kua siab, thiab lub siab yog loj, ib tug loj cuam tshuam tus nqi yuav siv tau. Lub zog sib txuas ntawm cov fins thiab cov kav dej yog siab thiab tsis yooj yim rau loosen. Cov khoom siv hluav taws xob sib txuas muaj cov khoom tsim tau zoo, tab sis lub suab nrov, kev nyab xeeb tsis zoo, thiab kev ua haujlwm tsis zoo rau cov neeg ua haujlwm. Txawm hais tias hydraulic kis tau tus mob tsis muaj teeb meem saum toj no, cov cuab yeej siv kuj tseem kim thiab yuav tsum tau ua haujlwm siab los ntawm kev saib xyuas cov neeg ua haujlwm, ua rau cov khoom lag luam qis dua.

Inlaid kauv fins

Inlaid kauv finned hlab yog ua ntej machined nrog kauv grooves ntawm ib qho dav thiab qhov tob ntawm cov kav hlau, thiab tom qab ntawd cov hlua hlau yog kos rau ntawm cov yeeb nkab steel ntawm lub tshuab dhos. Thaum lub sij hawm winding txheej txheem, vim hais tias ib tug npaum li cas ntawm pre tension, lub steel sawb yuav nruj nreem clamped nyob rau hauv lub kauv zawj, kom ntseeg tau ib tug tej thaj chaw deb ntawm cov hlau sawb thiab cov yeeb nkab steel. Txhawm rau tiv thaiv cov hlua hlau los ntawm kev thim rov qab thiab poob tawm, ob qho kawg ntawm cov hlua hlau yuav tsum tau welded rau cov yeeb nkab steel. Rau kev yooj yim ntawm kev teeb tsa, yuav tsum muaj qee qhov sib txawv ntawm cov hlau sawb thiab cov kauv zawj. Yog hais tias sab sib txawv me me dhau, tsim kev cuam tshuam, cov txheej txheem inlay yog qhov nyuaj rau kev ua haujlwm zoo. Tsis tas li ntawd, cov ntaub qhwv steel ib txwm muaj qee qhov rov qab, uas ua rau muaj kev sib txuas tsis zoo ntawm cov hlau sawb thiab hauv qab ntawm lub voj voog. Inlaying fins tuaj yeem ua tiav ntawm cov khoom siv dav dav ntawm tus nqi qis, tab sis cov txheej txheem yog qhov nyuaj thiab cov khoom siv tau qis.

Brazed kauv finned tube

Kev ua ntawm brazed kauv finned hlab yog nqa tawm nyob rau hauv ob kauj ruam. Ua ntej, qhwv lub steel sawb dav hlau perpendicular mus rau lub axis ntawm cov yeeb nkab nyob rau hauv ib tug kauv qauv nyob rau sab nrauv ntawm cov yeeb nkab, thiab weld ob kawg ntawm lub steel sawb mus rau lub steel yeeb nkab rau fixation. Tom qab ntawd, txhawm rau tshem tawm qhov sib txawv ntawm kev sib cuag ntawm cov hlua hlau thiab cov yeeb nkab steel, welded steel strip thiab steel yeeb nkab ua ke siv txoj kev brazing.

Vim nws tus nqi siab, txoj kev no feem ntau yog hloov los ntawm lwm txoj kev, uas yuav tsum tau muab qhwv cov hlua khi rau hauv zinc da dej rau tag nrho cov kub-dip galvanizing. Txawm hais tias tag nrho cov kev daws teeb meem kub-dip galvanizing yuav tsis nkag mus rau hauv qhov sib txawv me me ntawm cov fins thiab cov yeeb nkab steel, ib txheej galvanized tiav yog tsim nyob rau sab nrauv ntawm cov fins thiab sab nrauv ntawm cov yeeb nkab steel. Kev siv cov khoom kub-dip galvanized kauv finned raj yog txwv los ntawm cov tuab ntawm txheej galvanized (thaum txheej txheej galvanized yog tuab, zinc txheej tsis muaj zog thiab yooj yim poob tawm), thiab cov kua zinc tsis tuaj yeem nkag mus rau hauv qhov sib txawv. , yog li qhov sib txuas ntawm cov fins thiab cov yeeb nkab steel tseem tsis siab. Tsis tas li ntawd, lub tshav kub hloov pauv coefficient ntawm zinc yog me dua li ntawm cov hlau (li 78% ntawm cov hlau), yog li nws lub peev xwm hloov hluav taws xob tsawg. Zinc yog qhov cuam tshuam rau corrosion nyob rau hauv acids, alkalis, thiab sulfides, yog li ntawd, siv galvanized kauv finned tubes tsis haum rau ua cua preheaters (kom rov qab khib nyiab los ntawm boiler flue gas).

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