Multifunctional automatic drill feeding system of hydraulic motor of petroleum drilling machine

Abstract

The invention relates to a drill feeding system for a petroleum drilling machine, and in particular relates to a multifunctional automatic drill feeding system of a hydraulic motor of a petroleum drilling machine. The system comprises a hydraulic motor, a hydraulic pump, a PLC (programmable logic controller) electric control unit, a first proportional electromagnetic overflow pressure reducing valve and a second proportional electromagnetic overflow pressure reducing valve, wherein a cavity A and a cavity B of the hydraulic motor are respectively and correspondingly connected with a cavity A and a cavity B of the hydraulic pump; control ports X1 and X2 of the hydraulic pump are connected with the first proportional electromagnetic overflow pressure reducing valve and the second proportional electromagnetic overflow pressure reducing valve respectively; the cavity A and the cavity B of the hydraulic motor are respectively and correspondingly connected with a first pressure sensor and a second pressure sensor which are connected with the PLC electric control unit; and the PLC electric control unit is also connected with a slurry pressure sensor and a power swivel pressure sensor. The drill feeding system realizes a full-hydraulic automatic drill feeding function, and has good explosion-proof performance.

Description

technical field [0001] The invention relates to a drilling system for an oil drilling rig, in particular to a multifunctional automatic drilling system for a hydraulic motor of an oil drilling rig. Background technique [0002] At present, the demand for natural resources such as coal, oil and natural gas continues to rise, and society is facing increasing pressure on energy demand. As an important supplement to conventional energy, unconventional energy such as shale gas, coal gas and oil sands have gradually entered people's field of vision. , full-hydraulic multifunctional trailer drilling rigs have also appeared on the market thereupon, and these unconventional energy sources are mined. This full-hydraulic drilling rig all adopts manual drilling when drilling, and cannot automatically send drills. [0003] In order to enable the drilling rig to automatically send the drill, the main way of sending the drill is to use the automatic drill system of the AC variable frequenc...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiency that the full-hydraulic drilling rig in the prior art adopts the manual drilling method when drilling and cannot perform automatic drilling, and provides a hydraulic motor for oil drilling rigs that can realize full-hydraulic automatic drilling Multifunctional automatic drilling system

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