Rotary drilling rig and automatically deviation-rectifying system thereof
A technology of automatic deviation correction and rotary drilling rig, applied in the automatic control system of drilling, rotary drilling rig, rotary drilling and other directions, can solve the problems of prolonging the construction period, concrete over-square, wasting time, etc., to improve the drilling accuracy Effect
Active Publication Date: 2015-04-22
BEIJING SANY HEAVY MASCH CO LTD
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Problems solved by technology
Therefore, the existing structure will not only waste a lot of time and prolong the construction period; but also cause the concrete to exceed the square and increase the project cost
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] figure 1 Shown is a structural diagram of an automatic deviation correction system for a rotary drilling rig according to an embodiment of the present invention, and the automatic deviation correction system is used to correct the deviation degree of the drill rod in time during the drilling process of the rotary drilling rig. It can be seen from the figure that the automatic deviation correction system of the present invention at least includes a rever...
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The invention provides a rotary drilling rig and an automatically deviation-rectifying system thereof. The automatically deviation-rectifying system comprises a reversing valve, an execution component, a dip angle sensor, a pressure control valve and a controller, wherein the execution component comprises a first connector and a second connector, the dip angle sensor detects dip angle information of a drill rod during a drilling process, the pressure control valve is connected to an oil line entering the first connector, and the controller is connected with the dip angle sensor and the pressure control valve. When a dip angle is larger than a preset value, the controller controls the pressure control valve to enable pressure of hydraulic oil entering the first connector to be reduced. The automatically deviation-rectifying system collects the dip angle information in real time through the dip angle sensor, controls the pressure control valve through the controller, weakens tendency of making an inclined hole, and has the advantages of being high in drilling accuracy, capable of achieving multilevel pressurization and the like.
Description
technical field [0001] The invention mainly relates to the field of engineering machinery, in particular to an automatic deviation correction system for a rotary drilling rig, and a rotary drilling rig including the automatic deviation correction system. Background technique [0002] The main working devices of the drilling system of the rotary drilling rig include the main winch, the pressurization system and the power head system. Generally, during the drilling process, the main winch is in a floating state. When encountering situations such as inclined hard surfaces or uneven hard and soft strata, the force on the drill bit will be uneven, which will make the drill bit deviate to drill to one side. [0003] In the prior art, the pressurization system is mainly composed of a reversing valve, a buffer valve block, and a pressurization motor or a pressurization cylinder. During the drilling process, the pressurization system of this structure will increase the pressurizatio...
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IPC IPC(8): E21B7/10E21B44/00E21B3/00F15B11/02
Inventor 张园成许宏宇于卓伟
Owner BEIJING SANY HEAVY MASCH CO LTD