Cathodic nchedo pipeline corrosion: ngwá ọrụ ahụ, na-arụ ọrụ ụkpụrụ

N'aka nchedo corrosion , ịgbatị ọrụ ndụ nke metal akụkụ, nakwa dị ka ịnọgide na-enwe ya oru na nke anụ ahụ Njirimara n'oge ọrụ. N'agbanyeghị ọtụtụ ụzọ iji hụ mgbochi corrosion ihe, n'ụzọ zuru ezu na-echebe ihe si bibie nchara ọ bụ omume na naanị na obere okwu.

Irè nke nchebe dị otú ahụ na-adabere ọ bụghị nanị na àgwà nke zọcha technology, kamakwa site ọnọdụ nke ya ngwa. Karịsịa, metal Ọdịdị ego piping ha kacha mma Njirimara egosi electrochemical nchedo corrosion dabeere na cathodes. Egbochi guzobe nchara na ndị a na nkwukọrịta bụ, n'ezie, ọ bụghị naanị na ubi nke na ngwa nke a technology, ma na ahụ dum na e ji mara nke a na mpaghara nwere ike na-ahuta ka kasị mkpa electrochemical patronage.

Ịghọta electrochemical nchedo

Protection nke ọla megide nchara site electrochemical ọgwụgwọ dabeere na na nduzi nke electrode nwere n'ime ihe ndị na-agba nke na-corrosion usoro. Metal owuwu ga-ejikwara na a nwere nso ebe ha anodic mgbasa bụ n'okpuru allowable ịgba. Nke ikpeazụ, na mberede, na-ekpebisi ike site na oru akwụkwọ maka ọrụ nke owuwu.

Na omume, nke electrochemical corrosion nchedo agụnye ejikọta okokụre ngwaahịa na a mgbe nile ugbu a isi iyi. The electric n'ọhia na elu ma na Ọdịdị nke ahụ na-echebe ihe site polarization electrodes, n'ihi corrosion na nke a na-achịkwa mbibi usoro. N'ezie, anodic ebe on dara Ọdịdị na-aghọ ndị cathode, ikwe ka ha chụpụ ọjọọ Filiks, huu nchekwa nke lekwasịrị Ọdịdị.

The na-arụ ọrụ ụkpụrụ nke cathodic nchedo

E cathodic na anodic nchedo electrochemical ụdị. The kasị ewu ewu ma natara mbụ echiche, nke a na-eji chebe pipelines. Dị ka a n'ozuzu ụkpụrụ, mmejuputa usoro a, ihe na-ọnọ na ugbu a si na-ezighị ezi osisi nke mpụga isi iyi. Karịsịa, ọ nwere ike na otú a ga-echebe ígwè ma ọ bụ ọla kọpa tube, adịru cathode polarization ga-eme na ntughari òkè nke ha potentials na anode ala. N'ihi ya, corrosion echebe Ọdịdị ọrụ ga-ebelata ka ọ fọrọ nke nta efu.

N'otu oge ahụ, na cathodic nchedo nwere nsụgharị dị iche iche. The n'elu-kọwara na Usoro na-ebe-eme polarization si mpụga iyi, ma electrolyte eme ihe n'ụzọ dị irè na deaeration usoro na usen ọsọ cathodic Filiks, nakwa dị ka ihe e kere eke nke zọcha mgbochi.

Ọ ugboro ugboro kwuru na ụkpụrụ nke cathodic nchebe ghọtara site mpụga ugbu a isi iyi. N'ezie, ọrụ ya bụ isi ọrụ nke corrosion nchedo. Igosi ndị a aga-eme pụrụ iche ụgbọ, nke na-emekarị esịne ke ngụkọta technical akụrụngwa pipeline mmezi.

Stations nke cathodic nchedo corrosion

Isi ọrụ nke cathode ojii na-stably huu chọrọ metal ihe dị na nke ugbu a na usoro nke cathodic polarization. Jiri ndị dị otú ahụ akụrụngwa na akụrụngwa nke ala gas na mmanụ pipelines, mmiri ọkpọkọ, kpo oku usoro na wdg

E nwere ọtụtụ ụdị nke na isi mmalite, na ọtụtụ nkịtị ngwaọrụ na-enye maka cathodic nchedo esịnede:

• DC Ntụgharị akụrụngwa;
• Waya liner na-echebe ihe;
• Anode.

Na nke a, na e nwere a nkewa ụgbọ inverter na transformer. E nwere ndị ọzọ classifications, ma ha na-elekwasị anya na-segmentation nkeji, ma ọ bụ akporo, ma ọ bụ na oru e ji mara na afọ nke input data. Basic ụkpụrụ nke na-arụ ọrụ n'ụzọ kasị doo anya ihe atụ nke abụọ gosiri cathodic ụgbọ.

Transformer echichi nke cathodic nchedo

Ozugbo, ọ ga-ahụ kwuru na nke a na ụdị ụgbọ bụ gharazie ịba uru. On ya mgbanwe naanị bịa inverter analogues, nke nwere ma pluses na minuses. Agbanyeghị, transformer ụdị na-eji ọbụna na ọhụrụ paragraf enye cathodic nchebe.

Dị ka ihe ndabere nke dị otú ahụ a na-eji a ala-ugboro transformer 50 Hz thyristor Ntụgharị. Simple ngwaọrụ, dị ka usu-adọ ike ụkpụrụ maka thyristor akara usoro. A ọzọ ọrụ obibia nke management ihe aga-eme na-agụnye iji controllers na sara mbara arụmọrụ.

Modern cathodic corrosion nchedo pipelines si dị otú ahụ akụrụngwa na-enye ohere ka ịhazie afọ nke mmepụta ugbu a, voltaji egosi, nakwa dị ka mmezi na-echebe potentials. N'ihe banyere ọghọm nke nkesa, ha na-ebelata ka a elu ogo ugbu ripple na mmepụta na a ala ike na-akpata. Ọ kọwara na oghom bụghị a enweghị efegharị efegharị ugbu a ụdị.

Dozie nsogbu nke ripple ka a ruo n'ókè ụfọdụ na-enye ohere iwebata a ala-ugboro ịkpagbu usoro, ma ya akụkụ-ederịta akwụkwọ ozi akụkụ nke transformer, nke ọ bụghị mgbe niile kwere omume ime ka ndị dị otú ahụ ihe-mgbakwunye.

Inverter ojii cathodic nchedo

inverter echichi dabeere pulsed elu ugboro converters. Otu n'ime ndị isi na uru nke na-eji osisi nke ụdị bụ a elu arụmọrụ, na-eru 95%. N'ihi na ha tụnyere, ndị transformer nkeji, a ọnụ ọgụgụ nkezi nke ruo 80%.

Mgbe ụfọdụ, ahụ pụta ìhè, na ndị ọzọ uru. Ka ihe atụ, obere akụkụ inverter ụgbọ mụbaa ohere ha ngwa ndị siri ike. E nwekwara ego uru, nke na-egosi na omume nke eji ndị dị otú ahụ akụrụngwa. N'ihi ya, inverter cathodic corrosion nchedo pipelines akwụ ọsọ ọsọ ma na-achọ di ntakiri ego na mmezi. Otú ọ dị, àgwà ndị na-doro anya na anya naanị mgbe tụnyere na transformer nrụnye, ma taa, e nwere ndị ọzọ dị irè ọhụrụ n'aka nke na-enye ike maka pipelines.

Design cathodic ojii

Ndị dị otú ahụ akụrụngwa na-anọchi anya na ahịa dị iche iche ụlọ, shapes na nha. N'ezie, na-emekarị na onye imewe nke ndị dị otú ahụ na usoro, nke-enye gị ohere bụghị nanị na nke kacha mma maka mkpa ụfọdụ nke ndị na-ewu, ma na-na-enye ndị dị mkpa na-arụ ọrụ parameters.

Jighi ngụkọta oge ebe e ji mara n'ihu na-enye ohere na-ebuli ndị na-eri ya echichi, ụgbọ njem na nchekwa. Ka ihe atụ, n'ihi na obere ihe ezi adabara cathodic corrosion nchedo pipelines na ndabere nke inverter ibu 10-15 n'arọ na a ike nke 1.2 kW. Equipment na ndị dị otú ahụ e ji mara nwere ike serviced na a ụgbọ ala, ma n'ihi na nnukwu-ọnụ ọgụgụ oru nwere ike ịbụ ihe oke na arọ osisi, ka a na njikọ nke gwongworo, a kreenu na a otu nke installers.

echebe arụmọrụ

Akpan akpan anya na-akwụ ụgwọ na mmepe nke cathodic nchedo ụgbọ nke ngwá onwe ya. N'ihi na nke a integrated usoro, ikwe ka ebe na-echebe megide obere sekit na breakage ibu. Ke akpa idaha anyị na-eji pụrụ iche nchekwa ngwaọrụ, ikwe hazie mberede ọrụ ntọala.

Ma jumps na oge izu voltaji, ọdụ nke cathodic nchebe bụ eleghi anya na-kpọrọ emetụta ha, ma e nwere ihe ize ndụ nke electric ujo. Ka ihe atụ, ọ bụrụ na a na nkịtị mode na-ejikwara site ala voltaji ngwá, mgbe a na-awụlikwa elu na breakage egosi ike mee ka 120 V.

Ndị ọzọ ụdị electrochemical nchedo

Na mgbakwunye na cathodic nchebe na eletriki drainage eme technology na àjà corrosion mgbochi usoro. The kasị ekwe ebe a na-atụle ga-a pụrụ iche patronage si nchara na corrosion. Na nke a na-ejikọrọ na lekwasịrị ifịk ọcha nke ka akakabarede nke elu nke cathodes site na nke ugbu a. Ka ihe atụ, ígwè anwụrụ dị ka a akụkụ nke pipeline nwere ike na-echebe na zinc ma ọ bụ aluminum cylinders.

ọgwụgwụ

Ụzọ nke electrochemical nchedo ike ike ekewet ọhụrụ na ihe otutu. Irè nke isi otú ahụ usoro a na-alụso nchara Filiks mụtara ogologo oge gara aga. Otú ọ dị, mbara dissemination nke a Usoro na-egbochi onye oké njọ drawback. Eziokwu ahụ bụ na cathodic nchedo pipelines si corrosion-apụghị izere ezere na-amalite na-akpọ kpafuo okwukwo. Ha na-adịghị ize ndụ na-lekwasịrị Ọdịdị, ma nwere ike a na-adịghị mma mmetụta na nso akpọkwa. Karịsịa, vagus ugbu a na-eme ka otu corrosion na dara na-ebupụta nke n'akụkụ akpa.