Drilling pump electromechanical interlock control device

Abstract

The invention relates to a drilling pump electromechanical interlocking control device for petroleum drilling. According to the technical scheme, the drilling pump electromechanical interlocking control device mainly comprises a driller control switch, a fault alarm, a pressure sensor A, a cooling water pump, a lubrication pump, a pressure sensor B, a solenoid valve, a gas relay, a 380V power supply controller, a motor operation early warning device, a wire picking device and a drilling pump electric control cabinet. The pressure sensor A, the pressure sensor B, a pressure displayer, a solenoid valve controller and the solenoid valve form interlocking control over a drilling pump gas circuit and a cooling water pump and lubrication pump motor circuit. The drilling pump electromechanical interlocking control device has the advantages that interlocking control over a power supply circuit and the drilling pump gas circuit is realized, so that a damage accident caused by a lack of lubricating oil or cooling water will not happen in the using process; a time-control anti-freezing circuit is designed, as a result, a cooling water pump assembly can be prevented from freezing in winter, it can be guaranteed that drilling operation is conducted smoothly, and economic benefits are remarkable.

Description

technical field [0001] The invention relates to an electromechanical interlock control device for a drilling pump used in petroleum drilling, in particular to a drilling pump control device in which a cooling water pump and an external lubricating oil pump are driven by an electric motor in petroleum drilling. Background technique [0002] Drilling pump is the key equipment in drilling construction. It is generally used to transport drilling fluid to the bottom of the well in order to cool the drill bit and carry out cuttings. When the drilling pump is in use, the piston reciprocates in the cylinder liner. In order to prolong the service life of the piston and the cylinder liner, the drilling pump is equipped with a cooling water pump assembly. The cooling water pump assembly is composed of cooling water pump, water tank, nozzle, etc. Since the drilling operation is carried out outdoors, during construction in winter, the cooling water pump assembly is prone to freezing when...

AI Technical Summary

Problems solved by technology

The control switch that controls the running state of the lubricating oil pump or cooling water pump motor is an explosion-proof switch, which only has two states of on or off. The lubricating oil pump and the cooling water pump are running, and then the drilling floor personnel can hang the drilling pump operation switch to make the drilling pump run, otherwise the drilling pump will be damaged due to the lack of lubricating oil and cooling liquid. This operation is easy to describe and inconvenient to operate. If the lubricating oil pump or cooling water pump motor stops due to failure, the drilling floor personnel cannot find out in time, and the drilling pump will continue to run without lubrication or coolant, which will lead to the occurrence of drilling pump damage accidents

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