A rotary drilling rig main winch floating control system, method and rotary drilling rig

A technology of rotary drilling rig and main hoist, which is applied to the automatic control system of drilling, hoisting device, drilling equipment, etc. The effect of fighting risk

Active Publication Date: 2017-02-22
BEIJING SANY HEAVY MASCH CO LTD
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Problems solved by technology

[0005] In order to overcome the problem that the floating control system of the main winch of the existing rotary drilling rig is clamped between the drill bucket and the inner wall of the borehole, and the floating control system is opened by mistake, which may easily cause the danger of the bucket falling, the invention provides a rotary drilling rig Main winch floating control system and rotary drilling rig

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  • A rotary drilling rig main winch floating control system, method and rotary drilling rig
  • A rotary drilling rig main winch floating control system, method and rotary drilling rig
  • A rotary drilling rig main winch floating control system, method and rotary drilling rig

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Embodiment Construction

[0046] 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.

[0047]For the floating control system of the main winch of the rotary drilling rig, when the drill bucket is clamped with the inner wall of the borehole, it is easy to mistakenly think that the drill pipe has touched the bottom and open the floating control system, thereby causing the shortage of the risk of bucket falling. The embodiment of the present invention adopts Design a floating control system for the main winch of a rotary drilling rig, including the ...

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Abstract

The invention provides a system and a method for controlling the floating of a main winch of a rotary drilling rig and the rotary drilling rig. The system for controlling the floating of the main winch of the rotary drilling rig comprises the main winch, a main winch controller and a grounding protection device, wherein the grounding protection device comprises a pulling force detection unit for detecting the pulling force value of the main winch, a depth detection unit for detecting the descending depth value of the main winch, a judgment protection unit and a sending unit; when the pulling force value of the main winch is less than a predetermined pulling force value and the difference value between the descending depth value of the main winch and the drilling depth value of the rotary drilling rig is judged to be less than a predetermined difference value, a first floating oil way start signal is generated and is sent to the main winch controller by the sending unit; the main winch controller starts a floating oil way. The situation that whether to start the floating oil way is determined by judging the descending depth of a steel wire rope and the pulling force, so that the risk that a drill bucket can fall off when the floating oil way is started if the drill bucket is clamped in a drill hole is avoided, and the safety of grounding protection is improved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a main winch floating control system and method of a rotary drilling rig and the rotary drilling rig. Background technique [0002] At present, when the main winch of the rotary drilling rig is working, the tension on the wire rope is detected, and the tension signal is transmitted to the main winch controller. After processing and analysis, the main winch controller judges whether the drill pipe of the rotary drilling rig is bottoming out. state. When the detected tension value on the main winch is less than the preset value, it means that the drill pipe is in the state of bottoming out. Yang Momentum. When the detected pulling force of the main winch is greater than the set value, it means that the drill pipe is in the state of not touching the bottom, the controller sends an instruction to disconnect the floating oil circuit, and the main winch enters the power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/50B66D1/56B66D1/42E21B44/00
CPCB66D1/46B66D1/505B66D1/56E21B44/00
Inventor 马飞高凤翔邓霞容
Owner BEIJING SANY HEAVY MASCH CO LTD
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