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Published 8 years ago by torlinswjy with 0 Comments

Analysis and Selection of Drilling Rig Auxiliary Brake (1)

  • Analysis and Selection of Drilling Rig Auxiliary Brake (1)

    The auxiliary brake of drilling rig accessories is an indispensable part in the whole rig, and it as an important factors can guarantee safe operation. The main brake and auxiliary brake winch with each other, and they are indispensable. Drawworks brake with high speed use auxiliary brake to absorb most of the energy in the process of drilling hoisting system at first. Finally, it use the main brake to complete the parking brake. At present, the main brake hydraulic disc brake is the mainstream, and the auxiliary brake use electromagnetic brake and Eaton brake. The motor energy consumption braking is also used on the DB frequency conversion drill rig.

    Electromagnetic eddy current brake is a conversion device, which converts the huge mechanical energy produced in going down into electric energy, then converted to heat the non-frictional energy. The conversion of this energy is accomplished by the electromagnetic induction principle rather than the various forms of friction pairs. Heat generated during braking discharged as air or water.

    The driller control the excitation current auxiliary brake by adjusting the angle of the handle switch, and change brake torque to control drilling velocity. The accuracy of the speed and the quality of the dynamic requirements are not high. So the relatively simple closed loop control system can meet the requirements of drilling. The auxiliary brake torque is very stable, and the maximum torque can be considered to be the same under normal conditions.

 

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