Iivalvu zeBhola ezinkulu: Uhlu kunye nezicelo

Iivalvu zeBhola ezinkulu: Isikhokelo soHlelo kunye noKhetho loMvelisi

Iivalvu zebhola zizinto ezibalulekileyo kwiinkqubo zemibhobho yemizi-mveliso, ezenzelwe ukulawula ukuhamba kolwelo, iigesi, okanye ulwelo. Ulwakhiwo lwazo olulula kodwa oluqinileyo—olunebhola ejikelezayo enebhore—luqinisekisa ukuvalwa okuthembekileyo kunye nokwehla koxinzelelo oluncinci. Kodwa xa iiprojekthi zifunaiivalvu zebhola ezinkulu(ngokuvamile zichazwa njengeevalvu ezinobubanzi obuzii-intshi ezili-12/300 mm okanye ngaphezulu), ukukhetha uyilo olufanelekileyo kunye nomenzi kuba yinto ebalulekileyo. Esi sikhokelo sihlola ukuhlelwa kweevalvu zebhola ezinobubanzi obukhulu kunye nendlela yokukhetha umthengisi othembekileyo.

Zithini iiValve zeBhola ezinkulu zobungakanani

Iivalvu ezinkulu zebhola ziivalvu ezisebenza nzima ezenzelwe ukusetyenziswa kwamanzi amaninzi kumashishini afana neoyile negesi, unyango lwamanzi, ukuveliswa kombane, kunye nokucubungula iikhemikhali. Ububanzi bazo obukhulu (12–60+ intshi) buzivumela ukuba zikwazi ukujongana noxinzelelo olugqithisileyo, amaqondo obushushu, kunye neemfuno zevolumu.

Ezona mpawu:

• Ulwakhiwo Oluqinileyo:Yenziwe ngezinto ezifana nentsimbi engatyiwayo, intsimbi yekhabhoni, okanye i-alloy ukuze imelane neemeko ezinzima.
• Ukutywina Okuphambili:Izihlalo eziqinileyo (umz., i-PTFE, i-metal-to-metal) zithintela ukuvuza kwiindawo ezinoxinzelelo oluphezulu.
• Iinketho Zokusebenza:Ukusebenza ngesandla, ngomoya, nge-hydraulic, okanye ngombane ukuze kulawulwe ngokuzenzekelayo.

Uhlu lweeValve zeBhola eziKhulu

Ukuqonda iintlobo zeevalvu kuqinisekisa ukusebenza kakuhle kwezicelo ezithile:

1.Ngoyilo

• Iivalvu zeBhola ezidadayo:Ibhola ibanjwa endaweni yayo ngokucinezela izihlalo zeevalvu. Ilungele iinkqubo zoxinzelelo oluphantsi ukuya koluphakathi.
• Iivalvu zeBhola ezifakwe kwiTrunnion:Ibhola ibotshelelwe ngumngxuma we-trunnion, nto leyo enciphisa ukuguguleka kwesihlalo. Ifanelekile kwiipayipi ezinkulu nezinoxinzelelo oluphezulu.

PhawulaIivalvu zebhola ezinkulu zihlala zifakwe kwiivalvu zebhola ezifakwe kwi-trunnion.

2.Ngokwezinto eziphathekayo

• Yenziwe ngentsimbi eshayinayo:Ayikwazi ukumelana nokugqwala kwiindawo ezisebenzisa iikhemikhali okanye zaselwandle.
• Intsimbi yekhabhoni:Ixabiso elifanelekileyo kwiinkqubo zeoyile negesi ezinoxinzelelo oluphezulu.
• Ii-Alloys zeCryogenic:Yenzelwe amaqondo obushushu angaphantsi kwe-zero kwizicelo ze-LNG.

3.Ngokuphela koQhagamshelo

• Iflengiswe:Ixhaphakile kwiipayipi ezinkulu ukuze kube lula ukuyifaka.
• Idityanisiwe:Ibonelela ngesitywino esihlala sihleli, esingavuziyo kwiinkqubo ezibalulekileyo.

Indlela yokukhetha iValve yeBhola yoBukhulu obuLungileyo yoMvelisi

Ukukhetha umenzi othembekileyo kuqinisekisa ixesha elide, ukhuseleko, kunye nokuthobela imithetho. Nantsi into ekufuneka uyibeke phambili:

1.Amava kuShishino kunye noDumo

Khangela abavelisi abanerekhodi eqinisekisiweyo yokuvelisa iivalvu ezinkulu kwicandelo lakho. Jonga iziqinisekiso (umz., i-API 6D, i-ISO 9001) kunye nobungqina babathengi.

2.Amandla okwenza ngokwezifiso

Iiprojekthi ezinkulu zihlala zifuna izisombululo ezenzelwe wena. Qinisekisa ukuba umthengisi unikezela ngezi zinto zilandelayo:

• Ubungakanani beebhore ezenziwe ngokwezifiso, ukulinganiswa koxinzelelo, kunye nezixhobo.
• Iingubo ezikhethekileyo (umz., ezichasene nokugqwala, ezikhuselekileyo emlilweni).

3.Ukuqinisekisa umgangatho

Qinisekisa ukuba umenzi ulandela iinkqubo ezingqongqo zokulawula umgangatho, kuquka:

• Uvavanyo olungatshabalalisiyo (NDT) lokuqinisekisa ukuthembeka kwe-weld.
• Uvavanyo loxinzelelo ukuqinisekisa ukusebenza phantsi kweemeko ezinzima.

4.Inkxaso Emva Kokuthengisa

Khetha iqabane elibonelela ngenkxaso yobugcisa, iinkonzo zokulungisa, kunye nezixhobo ezifumaneka lula.

5.Ixabiso vs. Ixabiso

Nangona amaxabiso ebalulekile, beka phambili ixabiso lexesha elide. Iivalvu ezingabizi zinokonga iindleko kwangaphambili kodwa zikhokelela ekungaphumelelini rhoqo kunye nexesha lokungasebenzi.

Iingcinga Zokugqibela

Iivalvu zebhola ezinkuluazinamsebenzi kwiinkqubo zoshishino ezifuna amandla aphezulu okuhamba kwamanzi kunye nokuqina. Ngokuqonda ukuhlelwa kwazo kunye nokusebenzisana nomvelisi onamava, unokuqinisekisa ukusebenza kakuhle kunye nokhuseleko. Soloko ubeka phambili iziqinisekiso zomgangatho, iindlela zokwenza ngokwezifiso, kunye nenkxaso emva kokuthenga xa uvavanya ababoneleli.

Ukuze ufumane ulwazi oluthe kratya malunga nokukhetha iivalvu, jonga izikhokelo zethu zobugcisa okanye unxibelelane neqela lethu lobunjineli ukuze ufumane iingcebiso ezenzelwe wena.