Petroleum drilling machine winch broken shaft protection method

Abstract

The invention belongs to the technical field of petroleum drilling machine drilling and production and particularly relates to a petroleum drilling machine winch broken shaft protection method which comprises the following steps of: 1, collecting a roller speed and a drilling tool hanging load parameter through a PLC slave station; 2, collecting a speed and a torque of a winch through communication of a winch control system; 3, inputting a drilling tool hanging load activation value and a speed difference activation value of broken shaft protection through a touch screen; and 4, reading the drilling tool hanging load activation value and the speed difference activation value, input by the touch screen, of broken shaft protection through a PLC (programmable logic controller), conducting data processing on the drilling tool hanging load activation value, the speed difference activation value and parameters of a winch control system, then conducting logical judgment on a detected roller and the drilling tool hanging load parameter by the PLC, automatically executing a corresponding program segment when a broken shaft condition is judged according to a program logic, and outputting a brake control signal. For the petroleum drilling machine winch broken shaft protection method disclosed by the invention, by conducting double detection and judgment on a drilling tool hanging load and a torque of a motor through the PLC, a disc brake control signal is output, a disc brake is utilized to brake the roller, and equipment such as a traveling block is prevented from hitting a drill floor and being damaged.

Description

technical field [0001] The invention belongs to the technical field of petroleum drilling rig drilling and production, and in particular relates to a method for protecting a broken shaft of a drawworks of an petroleum drilling rig. Background technique [0002] The winch system is one of the three major systems in oil drilling, that is, the hoisting system (the other two are the circulation system and the rotating system). When the shaft breaks, the hook and traveling block are in free fall, and the speed accelerates to drop. When the system protection is activated, the hook and traveling block have already dropped to the drilling floor. There are staff on the drilling floor, and the equipment is expensive. Once an accident occurs ,The consequences could be disastrous. How to protect the winch after the shaft is broken has become the first problem that users want to solve. Contents of the invention [0003] In view of the above-mentioned problems and deficiencies in the ...

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Problems solved by technology

[0002] The winch system is one of the three major systems in oil drilling, that is, the hoisting system (the other two are the circulation system and the rotating system), and the current protection of the hoisting system of the winch is not Electric braking, bumping up and down, and electronic anti-collision, but when the winch breaks the shaft, the hook and traveling block are in free fall, and the speed accelerates to drop. When the system protection is activated, the hook and traveling block have fallen to the drilling table , there are staff on the drilling floor, and the equipment is expensive. Once an accident occurs, the consequences will be disastrous

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