Automatic control system and method for drilling blowout prevention

Abstract

The drilling blowout prevention automatic control system comprises a slag removal water tank, a blowout prevention box, a drilling machine, a PLC intelligent control cabinet, a network switch and a coal mine information management and control platform, an orifice blowout prevention device is arranged at a selected drilling position, and a pressure sensor connected with the PLC intelligent control cabinet through a wire is arranged at the position, close to an orifice sleeve, of the orifice blowout prevention device; an electric gate valve connected with the PLC intelligent control cabinet through a wire is arranged on an inlet pipe, connected with the gas extraction main pipeline, of the slag removal water tank, information transmission is conducted between the pressure sensor and the electric gate valve through the PLC intelligent control cabinet, and the electric gate valve can act in time when gas is jetted out, so that the jetted gas is rapidly discharged. And the accident record is transmitted to the coal mine information management and control platform through the network switch. The problems that according to an existing drilling blowout prevention technology, the reaction speed is low, and drilling site gas overrun is likely to be caused are solved. The device is easy and convenient to operate, high in practicability, low in cost and capable of rapidly and accurately coping with power phenomena such as drilling and hole spraying, and accident losses are reduced.

Description

technical field [0001] The invention relates to an automatic control system and method for drilling blowout prevention, in particular to a system and method for reducing the damage of dynamic phenomena such as drilling blowout holes in the process of underground drilling in coal mines. Background technique [0002] When drilling out of the coal seam, coal and gas are often ejected from the borehole, that is, the phenomenon of injection holes occurs. Nozzle holes will cause the gas concentration at the work site to exceed the limit for a long time, and there is a danger of explosion. The ejected cinder is easy to hurt people, and when the ejected amount is large, it may also bury the mining equipment and block the roadway. In addition, the long-term gas concentration exceeds the limit, which makes the drilling efficiency low, and the drilling time is long, which greatly affects the progress of the work. Therefore, the phenomenon of drilling and blowing holes is a serious th...

AI Technical Summary

Problems solved by technology

In order to prevent the driver from making mistakes, an airbag is installed on the gas pipeline as a buffer, which makes the whole system more complicated

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