Li-Trione Bits: HDD Guided vs. Vertical Shaft Differences
Lefapheng la lisebelisoa tsa ho cheka, li-roller cone bits ke likarolo tsa mantlha tsa ho pshatla le ho phunya mafika. Leha ho le joalo, leha ka bobeli e le likotoana tsa roller cone, li-roller cone tse tataisitsoeng ka ho khetheha tse etselitsoeng Horizontal Directional Drilling (HDD) le tse sebelisetsoang kaho ea shaft e otlolohileng (moqomo o otlolohileng / oa moepo) li fapane haholo ka moralo le chebahalo ka lebaka la phapang ea bohlokoa maemong a bona a ho sebetsa a fetotsoeng. Bakeng sa litsebi tsa ho cheka le bareki, ho utloisisa liphapang tsena ha ho nolofalletse khetho e potlakileng feela ho qoba maraba empa hape ho tebisa kutloisiso ea motheo oa indasteri ea "lisebelisoa tse ikamahanyang le maemo a mosebetsi". Kajeno, re tla felisa phapang pakeng tsa tse peli ho tloha litekanyo tse peli tsa bohlokoa tsa sebopeho le ponahalo.
I. HDD Guided Roller Cone Bits: O hlahetse "Flexible Steering", Compact in Structure & Ponahalo
Tlhokahalo ea mantlha ea kaho ea HDD ke "ho tsamaisa ka nepo le ho cheka ho kobehileng". Ka mohlala, ka lipeipi tsa masepala rala, thecheka hanyanee hloka ho feta litšitiso tse ka tlas'a lefatše le ho latela tsela e hlophisitsoeng. Boemo bona ba ts'ebetso bo etsa qeto ea hore sebopeho le ponahalo ea li-roller cone tse tataisitsoeng li tlameha ho tsepamisoa ho "flexible and controllability".
Mabapi le sebopeho, lintlha tsa mantlha tsa moralo oa li-roller cone bits ke "compactness + steering empowerment". Bongata ba nka sebopeho sa li-roller cone tse 3, empa li-roller cones li hlophisitsoe ka mokhoa o teteaneng le ka kakaretso. Mefuta e meng e entsoe ka sebopeho sa eccentric roller cone, e ka hlahisang matla a ka morao ha bonolo ha a bapisoa le mochini o tsamaisang ho fihlela tokiso e nepahetseng. The bearing system ke karolo ea eona ea mantlha e tsamaisang matla, e amohelang li-bearings tse tiisitsoeng tse sa keneng ka morao tse nang le bolelele bo bolelele ba axial le bophara bo nyane bo ka ntle, tse ka sebetsanang le meroalo e fapanyetsanang e bakoang ke ho tsamaisa khafetsa le ho qoba ho jara ho phatloha kapa ho jamming. Habohlokoa ka ho fetisisa, lipoleiti tse tataisang tse 1-2 (mapheo a tataiso) li kopantsoe ka lehlakoreng kapa ka morao ho sekhahla sa ho phunya, se entsoeng ka carbide e entsoeng ka holimo e sa tsitsang, e ke keng ea lumellana le lerako la lesoba feela ho tsitsisa tataiso empa hape e fokotsa ho sisinyeha nakong ea ho cheka. Moqapi oa leino o shebane le "ho itoanela le ho ikamahanya le maemo", haholo-holo e khutšoanyane le e teteanengmeno a sililoeng(meno a tšepe) kapa meno a kentsoeng ka boholo bo bonyenyane, a bolelele ba leino la 3-8mm le ho arohana ha meno a teteaneng, a loketseng bakeng sa ho phunya le ho sila libōpeho tse kang letsopa, lehlabathe, lejoe le hlabang. Moralo oa mocha oa phallo o boetse o bonolo haholo, o na le mahlo a metsi a bophara bo boholo ba 1-2, a etelletsa pele ho netefatsa hore li-cuttings lia tsoa le ho thibela thibelo.
Mabapi le ponahalo, li-roller cone bits tse tataisoang li tsebahala haholo. Ka kakaretso, li na le sebōpeho sa "thupa e tšesaane" e nang le karolelano e kholo ea bolelele bohle ho isa bophara, 'me bophara bo tloaelehileng ke 150-400mm. Sebopeho sena se lumella karoloana ea ho phunya hore e fetohe habonolo likarolong tse kobehileng ntle le ho jamming. Lipoleiti tsa tataiso tse hlahelletseng ka lehlakoreng ke tse khethollang ka ho fetisisa; sefahleho sa ho phunya se bataletse, ha se na masoba a hlakileng, ke li-grooves tse bonolo feela. Bokaholimo bo fafatsoa hangata ka lesela le boputsoa bo bobebe kapa bo mosehla bo sa tsitsang, bo batlang bo le mosesaane. Matšoao a sehlahisoa a bontša ka ho hlaka "mofuta o tataisitsoeng", "tšebeliso e khethehileng ea HDD" le radius ea curvature le likarolo tse ling bakeng sa boitsebiso bo potlakileng.
II. Vertical Shaft Roller Cone Bits: E hlahetse "High-Pressure Rock Breaking", e Tenya ebile e Tiile ka Sebopeho le Ponahalo.
Tlhokahalo ea mantlha ea ho aha shaft e otlolohileng (joalo ka lithupa tsa merafo le liliba tse otlolohileng tsa oli) ke "ho pshatla lejoe hantle le ho mamella khatello e phahameng ea ho cheka". Tsela ea ho cheka e otlolohile haholo, 'me tlhokahalo ea ho feto-fetoha ha tsamaiso e batla e le tlaase. Boemo bona ba ho sebetsa bo etsa qeto ea hore sebopeho le ponahalo ea li-roller cone tse otlolohileng li tlameha ho hahoa ho pota-pota "ho tiea le ho sebetsa hantle".
Mabapi le sebopeho, moralo oa mantlha oa li-vertical shaft roller cone bits ke "ho matlafatsa ho jara moroalo + ho ntlafatsa bokhoni ba ho pshatla mafika". Bongata ba nka li-roller cones tse 3 (mefuta e kholo ea bophara e ka fihla ho li-roller cones tse 4), ka li-roller cones tse hlophisitsoeng ka mokhoa o bohareng o lekanang. Theli-roller conese na le bophara bo boholo le bophara bo pharaletseng ba lesale la meno, 'me molamu oa cone oa rolara o na le boits'oaro bo phahameng ka ho fetisisa, bo ka mamellang boima ba lithane tse mashome tsa khatello ea ho cheka axial. Sistimi ea ho beleha e amohela sebopeho se kopaneng sa li-rolara tse boima + li-bearings tse phaphametseng, tse nang le botenya bo botenya ba radial le ts'ebetso e ikhethang ea ho hanyetsa, e ka sebetsanang le ho thothomela ho matla nakong ea ho robeha ha lefika le thata. Phapang e kholo ka ho fetisisa ho tataisolikotoana tsa ho phunyake ho ba sieo ha mohaho oa tsamaiso; 'mele oa ho phunya o entsoe ka mokhoa o tiileng le o teteaneng, o tsepamisitse maikutlo ka ho feletseng holim'a ho pshatla lejoe. Meno a arotsoe ka meno a haliloeng le meno a maholo a kentsoeng. Meno a sililoeng a bolelele ba limilimithara tse 10-15 ka malebela a meno a bohale, 'me meno a kentsoeng a nka carbide e entsoeng ka thollo e kholo ea 8-12mm, e nang le leino le nang le sebopeho sa conical kapa sebōpeho sa lekhalo, le pshatlang lejoe le thata ka matla. Moralo oa mocha oa phallo o rarahane ho feta, o na le li-nozzles tse 3-6 tse nang le khatello e phahameng sefahlehong sa ho qetela, tse ka fafatsang mokelikeli o matla oa ho cheka likarolo tse pholileng le ho ntša li-cuttings ka nako e loketseng.
Mabapi le ponahalo, maikutlo a pele a li-vertical shaft roller cone bits "e khuts'oane, e mafura ebile e tiile", e nang le karo-karolelano e nyane ea bolelele bohle ho isa bophara, le bophara ba 200-600mm kapa ho feta. Mehlala ea bophara bo boholo e tšoana le li-discs tsa tšepe tse teteaneng, tse tletseng maikutlo a matla. Li-roller cones tse 3 li na le sebaka se seholo se pepeneneng, se nang le meno a bohale le a hlaheletseng, 'me masoba a mangata a chitja a sefahleho se qetellang a bonahala ka ho hlaka. Mefuta e meng e na le likatiba tse sireletsang lipalangoang tse khubelu kapa tse ntšo. Bokaholimo bo fafatsoa ka 'mala o boputsoa bo lefifi kapa o motšo o hananang le ho roala, o hananang le ts'ebetso le ho bola. Matšoao a lihlahisoa a tla bontša lintlha tsa bohlokoa tse kang "vertical shaft special use", "hard rock type" le "drilling pressure level", e totobatsang thepa ea eona ea ho jara le ho senya mafika.
Kakaretso ea Phapano ea Motheo: Maemo a Ts'ebetso a Hlalosa Foromo
Ka mantsoe a bonolo feela, likotoana tsa "roller cone" tse tataisoang ke "litsebi tse hloahloa tsa ho tsamaisa", tse lebisang tlhokomelo ho seteraekeng le lateral matla a ho hanyetsa sebopeho, ka ponahalo e mosesaane le lipoleiti tsa tataiso; vertical shaft roller cone bits ke "li-giants tse matla tse pshatlang mafika", tse shebaneng le ho jara moroalo le ho robeha ha mafika ka mokhoa o atlehileng, tse nang le chebahalo e khuts'oane, e mafura le li-nozzle tse ngata. Phapang pakeng tsa tsena tse peli ha e le hantle ke mothofatso oa moralo oa sehlahisoa o fapaneng o susumetsoang ke phapang ea maemo a ho cheka a ho sebetsa. Ho tseba lintlha tsena tsa boitsebahatso le ponahalo ho ka etsa hore tlhahlobo ea kaho ea setšeng, ho reka thepa le khetho, hammoho le ho tsebahatsa tsebo ea indasteri ho sebetse hantle le ho nepahala.
TS'OANELO LITABA
Romela Molaetsa
Aterese ea hau ea lengolo-tsoibila e ke ke ea phatlalatsoa. Libaka tse hlokahalang li tšoailoe ka *
