Idizayini yesistimu ehlukile yesando se-dth

Ijeneretha yomthelela wetorque yesando se-dth isetshenziswa ngokuhambisana ne-PDC drill bit.Indlela yokuphuka kwamadwala isekelwe ekugawulweni komthelela kanye nokuzungezisa ukugunda ukwakheka kwamadwala.Umsebenzi oyinhloko ukuqinisekisa ikhwalithi yomzimba womthombo ngenkathi uthuthukisa isivinini sokumba ngomshini.I-torque impactor iqeda ukudlidliza okukodwa noma ngaphezulu (okuphambene,

i-longitudinal and torsional) izenzakalo ezingase zenzeke phakathi nokunyakaza kwe-downhole drill bit, igcina i-torque yayo yonke intambo yokubhoboza izinzile futhi ilinganisela, futhi ngobuhlakani iguqula amandla oketshezi odaka abe nomthelela wokugobhoza, imvamisa ephezulu, umfaniswano nozinzile wemishini. amandla futhi iwadlulisele ngqo ku-PDC drill bit, ukuze i-drill bit kanye naphansi komthombo njalo kulondoloze ukuqhubeka.

Izici zomkhiqizo wesando we-DTH:
I-1) Lolu hlobo lwesando se-dth lwakhiwe ngohlelo olunamandla oluvuthelayo, olungasebenzisa wonke amagesi anengcindezi ephezulu yokukhipha i-slag.
2) Yakhelwe ngepulaki elawula umoya, engalungisa umoya osetshenziselwa ukukhishwa kwe-slag ngokuvumelana nobulukhuni bedwala obuhlukene, ukumelana nokugqoka, kanye nokubhoboza ukuze kuzuzwe umphumela omuhle kakhulu wokukhishwa kwe-slag futhi ngaleyo ndlela kuzuzwe ukusebenza kahle okuphezulu kakhulu kokumba.
3) Isakhiwo silula, kunezingxenye ezimbalwa, futhi ukusetshenziswa kwezingxenye ezingagugi kwenza isikhathi sokusebenza sesando se-dth sibe side.
4) Ijoyinti langaphambili lithatha intambo enamakhanda amaningi ukuze ixhume nesilinda sangaphandle, okwenza kube lula ngesando se-dth ukuqaqa i-drill bit.

Ububanzi bokusetshenziswa kwezando ze-dth:
Izimayini, izinkwali, imigwaqo emikhulu kanye namanye amaphrojekthi abhoboza izimbobo eziqhumayo, izimbobo ezivimbelayo, ukuqinisa izintaba, ukuhanjelwa kwehange neminye imigodi yobunjiniyela, imigodi yokupholisa umoya oshisayo, imigodi yemithombo yamanzi, njll.

Uma isando se-dth sisebenza ngokujwayelekile, i-drill bit ibhekene nephansi lomgodi, futhi amandla e-dth hammer avela ku-piston adluliselwa ngokuqondile phansi kwembobo nge-drill bit.Phakathi kwabo, i-cylinder block ayimelani umthwalo womthelela.Lapho isando se-dth siphakamisa ithuluzi lokumba, asivumeli i-cylinder block ukuthi imelane nomthwalo womthelela.Ngaphezu kwalokho, isakhiwo siyasebenza futhi singafinyelelwa ngokushaya. Lokhu kungenxa yokuthi i-drill bit kanye ne-piston slide phansi ngesisindo sazo ibanga elithile, futhi ukubhobozwa kwe-air defense kuyavezwa, ngakho-ke ingcindezi evela kumshini wokuqondanisa iyenziwa. ku-cylinder block, futhi i-orifice emaphakathi ye-drill bit kanye ne-piston ibalekela emkhathini, okwenza isando se-dth siyeke ukusebenza ngokwaso.