阅读说明：本技术 一种石油钻机绞车断轴保护方法 (Method for protecting broken shaft of petroleum drilling machine winch ) 是由 武龙 尤立春 王玉明 许美成 邓月婷 何飞 胡志鹏 丁建平 于 2021-10-20 设计创作，主要内容包括：本发明属于石油钻机钻采技术领域,具体涉及一种石油钻机绞车断轴保护方法,该方法按照下述步骤进行：1：通过PLC从站采集滚筒速度及钻具悬重参数；2：通过绞车控制系统的通讯采集绞车的速度及转矩；3：通过触摸屏输入断轴保护的钻具悬重激活值及速度差激活值；4：可编程控制器PLC读取触摸屏输入断轴保护的钻具悬重激活值及速度差激活值与绞车控制系统的参数进行数据处理,此后可编程控制器PLC对检测到的滚筒及钻具悬重参数进行逻辑判断,经程序逻辑判定出现断轴情况即刻自动执行对应程序段,输出刹车控制信号。本发明通过PLC对钻具悬重和电机转矩进行双重检测判断,从而将盘刹控制信号输出,利用盘刹将滚筒刹住,防止游车等设备下砸钻台,损坏设备。(The invention belongs to the technical field of drilling and production of petroleum drilling machines, and particularly relates to a shaft breakage protection method for a petroleum drilling machine winch, which comprises the following steps: 1: collecting roller speed and drilling tool hanging weight parameters from a PLC slave station; 2: the speed and the torque of the winch are collected through the communication of a winch control system; 3: inputting a drilling tool hanging weight activation value and a speed difference activation value protected by broken shafts through a touch screen; 4: the Programmable Logic Controller (PLC) reads the suspension weight activation value and the speed difference activation value of the drilling tool input broken shaft protection by the touch screen and the parameters of the winch control system for data processing, then the Programmable Logic Controller (PLC) carries out logic judgment on the detected suspension weight parameters of the rotary drum and the drilling tool, automatically executes a corresponding program segment immediately after judging the broken shaft condition through program logic, and outputs a brake control signal. According to the invention, double detection and judgment are carried out on the hanging weight of the drilling tool and the torque of the motor through the PLC, so that a disc brake control signal is output, the drum is braked by using the disc brake, and the drilling platform is prevented from being hit by equipment such as a travelling block and the like and the equipment is prevented from being damaged.)

1. The method for protecting the broken shaft of the winch of the oil rig is characterized by comprising the following steps of:

step 1: collecting roller speed and drilling tool hanging weight parameters from a PLC slave station;

step 2: the speed and the torque of the winch are collected through the communication of a winch control system;

and step 3: inputting a drilling tool hanging weight activation value and a speed difference activation value protected by broken shafts through a touch screen;

and 4, step 4: the Programmable Logic Controller (PLC) reads a drilling tool hanging weight activation value and a speed difference activation value input by the touch screen and protected by broken shafts and parameters of a winch control system for data processing, then the Programmable Logic Controller (PLC) performs logic judgment on the detected hanging weight parameters of the rotary drum and the drilling tool, automatically executes a corresponding program segment immediately after judging the broken shaft condition through program logic and outputs a brake control signal;

and 5: the brake control signal output by the Programmable Logic Controller (PLC) is interlocked with a disc brake control system to realize the brake function.

2. The method for protecting the shaft breakage of the winch of the oil rig as claimed in claim 1, wherein the communication port of the Programmable Logic Controller (PLC) is connected with the communication port of the winch control system and the communication port of the touch screen, and the communication ports of the PLC slave stations are connected in a communication bus mode to form a bus communication network for data acquisition, data transmission and program operation.

3. The method for protecting the shaft breakage of the winch of the oil rig as claimed in claim 1, wherein the Programmable Logic Controller (PLC) comprises a CPU template, a switching value input/output template, an analog value input/output template and a counter template.

Technical Field

The invention belongs to the technical field of drilling and production of petroleum drilling machines, and particularly relates to a shaft breakage protection method for a petroleum drilling machine winch.

Background

The winch system is one of three major systems in oil drilling, namely a lifting system (the other two systems are a circulating system and a rotating system), the conventional winch lifting system is protected by an electricity loss brake, and is hit up and down, and electronic collision is prevented. How to protect the winch after the shaft is broken becomes a problem which is expected to be solved primarily by users.

Disclosure of Invention

Aiming at the problems and the defects in the prior art, the invention provides a method for protecting the broken shaft of a petroleum drilling machine winch.

In order to achieve the purpose, the invention provides the following technical scheme:

a method for protecting the broken shaft of a petroleum drilling machine winch comprises the following steps:

step 1: collecting roller speed and drilling tool hanging weight parameters from a PLC slave station;

step 2: the speed and the torque of the winch are collected through the communication of a winch control system;

and step 3: inputting a drilling tool hanging weight activation value and a speed difference activation value protected by broken shafts through a touch screen;

and 4, step 4: the Programmable Logic Controller (PLC) reads a drilling tool hanging weight activation value and a speed difference activation value input by the touch screen and protected by broken shafts and parameters of a winch control system for data processing, then the Programmable Logic Controller (PLC) performs logic judgment on the detected hanging weight parameters of the rotary drum and the drilling tool, automatically executes a corresponding program segment immediately after judging the broken shaft condition through program logic and outputs a brake control signal;

and 5: the brake control signal output by the Programmable Logic Controller (PLC) is interlocked with a disc brake control system to realize the brake function.

Furthermore, the PLC communication port is connected with the communication port of the winch control system and the communication port of the touch screen, and the PLC slave station communication ports are connected in a communication bus mode to form a bus communication network for data acquisition, data transmission and program operation.

Furthermore, the programmable logic controller PLC comprises a CPU template, a switching value input/output template, an analog value input/output template and a counter template.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, double detection and judgment are carried out on the hanging weight of the drilling tool and the torque of the motor through the PLC, so that a disc brake control signal is output, and the drum is braked by using the disc brake, so that the situation that the power of the drum is lost after a shaft of a winch is broken by a drilling machine lifting system is prevented, and a travelling block, a hook and a top drive device do quick free-falling motion, so that a drilling platform is hammered down, and the device is damaged.

Drawings

FIG. 1 is a schematic flow chart of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the method for protecting the broken shaft of the winch of the oil rig comprises the following steps:

step 1: collecting roller speed and drilling tool hanging weight parameters from a PLC slave station;

step 2: the speed and the torque of the winch are collected through the communication of a winch control system;

and step 3: inputting a drilling tool hanging weight activation value and a speed difference activation value protected by broken shafts through a touch screen;

and 4, step 4: the Programmable Logic Controller (PLC) reads a drilling tool hanging weight activation value and a speed difference activation value input by the touch screen and protected by broken shafts and parameters of a winch control system for data processing, then the Programmable Logic Controller (PLC) performs logic judgment on the detected hanging weight parameters of the rotary drum and the drilling tool, automatically executes a corresponding program segment immediately after judging the broken shaft condition through program logic and outputs a brake control signal;

and 5: the brake control signal output by the Programmable Logic Controller (PLC) is interlocked with a disc brake control system to realize the brake function

When the winch control system is used specifically, the PLC communication port is connected with the communication port of the winch control system and the communication port of the touch screen, and the PLC slave station communication ports are connected in a communication bus mode to form a bus communication network for data acquisition, data transmission and program operation.

When the method is used, winch control system parameters are sampled in a communication bus mode, and the winch control system parameters mainly comprise: the method comprises the steps that an actual speed value and a motor torque value are transmitted to a Programmable Logic Controller (PLC), a drilling tool hanging weight activation value and a speed difference activation value are input through touch screen operation, the PLC reads data input by a touch screen, data operation and data processing are carried out on parameters of a winch control system, drilling tool hanging weight and data collected by a roller, the PLC judges the operation state of a drilling machine according to data processing results, control signals are output to a brake control system through a brake driving loop, and the brake control system accurately controls the action of a brake mechanism.

The hanging weight of the drilling tool is transmitted to a Programmable Logic Controller (PLC) through a pressure transmitter by a PLC slave station, incremental codes are installed on a roller, the incremental codes are transmitted to the PLC through a counter module and then converted into the speed of the roller through a program, the speed and the torque of a motor are transmitted to the PLC through a winch control system, and the PLC outputs control signals to a brake mechanism through a brake driving loop under the following two conditions to accurately control the action of the brake mechanism.

The Programmable Logic Controller (PLC) has two conditions for double detection and judgment of the suspended weight of the drilling machine and the torque of the motor, wherein the condition is as follows: when the drum speed-motor speed > the speed difference activation value, condition two: the practical torque of winch = the no-load torque of winch and the weight of overhang < the weight of overhang activation value, duration is greater than 0.5S simultaneously, when possessing above two kinds of conditions, programmable controller PLC carries out dual detection judgement to weight of overhang and motor torque to brake the control signal output with the dish, utilize the dish to brake the cylinder, in order to prevent that rig hoist system from behind the disconnected axle of winch, make the cylinder lose power, cause the trip, big hook and top drive equipment to do quick free fall motion, thereby pound the rig floor down, damage equipment.