A Real-time Judgment Method of Drill Pipe Working State in Hydraulic Decoking Process

Abstract

The invention provides a method for judging the work state of a drilling rod in the hydraulic decoking process in real time. Sound and vibration signals of coke sprayed into the inner wall of a coke chamber through high-pressure water are collected in real time; the height of a drill bit and a rotating speed signal of the drilling rod are acquired in real time; according to the sound and vibration signal generating position, the sound and vibration signal of a sound and vibration sensor closest to the drill bit and corresponding instantaneous frequency spectrum data are selected and are converged into a data substream in time order, a signal power spectrum fitted curve is fitted according to the distance between the sound and vibration generating position and the sensor with the acquired corresponding sound and vibration signal and the rotating speed of the drilling rod, and characteristic parameters of the signal power spectrum fitted curve are acquired; the characteristic parameters of the signal power spectrum fitted curve and prestored characteristic parameters in a failure state database are compared, failure judgment is carried out according to an experience threshold value, an alarm is given, and a solution is provided. According to the method, possibly happening drill locking and drill blocking failures can be judged in advance, the conformity with the actual situation of projects is high, and the judgment effect is good.

Description

technical field [0001] The invention relates to the field of hydraulic decoking on the inner wall of a coke tower, in particular to a method for real-time determination of the working state of a drill pipe during the hydraulic decoking process. Background technique [0002] In the process of hydraulic decoking, failures such as drill holding and sticking caused by coke collapse not only affect production efficiency, but also cause major accidents of equipment and personnel damage. The existing detection methods are mainly through the arrangement of tension on the steel cable The sensor is used to detect the situation of holding and sticking the drill. In fact, the detection of drill holding and sticking through the increase of the tension of the steel cable often means that the accident of the drill pipe has already occurred, which cannot be avoided through early warning. Contents of the invention [0003] The technical problem to be solved by the present invention is to ...

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Problems solved by technology

[0002] In the process of hydraulic decoking, failures such as drill holding and sticking caused by coke collapse not only affect production efficiency, but also cause major accidents of equipment and personnel damage. The existing detection methods are mainly through the arrangement of tension on the steel cable Sensors to detect the situation of holding and sticking drill

In fact, the detection of drill holding and sticking through the increase of the tension of the steel cable often means that the accident of the drill pipe has already occurred, which cannot be avoided through early warning

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