Tamping-proof monitoring device for drilling platform turntable surface of drilling machine used for petroleum exploration

Abstract

The invention relates to a monitoring device for breaking prevention of the surface of a turntable on a derrick floor of a drilling machine for oil exploration, which is characterized in that: the monitoring device comprises a transducer of a photoelectrical encoder, a breaking-prevention controller and a hydraulic-controlled proportional valve; wherein the transducer of the photoelectrical encoder is connected with the hydraulic-controlled proportional valve via the breaking-prevention controller. The breaking-prevention controller is composed of an FPGA, a photoelectric isolation circuit, a JTAG port, operating keys, a power isolation module, a signal amplification circuit, a power amplification circuit, an indicator light, an LCD module and a crystal oscillation circuit; wherein the FPGA is connected with the photoelectric isolation circuit, the JTAG port, the operating keys, the power isolation module, the signal amplification circuit, the indicator light, the LCD module and the crystal oscillation circuit respectively; the photoelectric isolation circuit is connected with signal input of the photoelectric encoder transducer; the signal input of the transducer, the power isolation module and the power amplification circuit are connected with power input of 24V; and the power amplification circuit is connected with drive output of an electromagnetic valve. The invention has the advantages of resolving the spot breaking-prevention problem of the surface of the turntable on the derrick floor, reducing accident potential and improving the spot safety.

Description

technical field [0001] The invention relates to a monitoring device for anti-smashing of a turntable surface of a drilling rig used for oil exploration, and belongs to the technical field of monitoring devices for drilling rigs used for oil exploration. Background technique [0002] At the oil exploration and drilling site, when the drilling rig is operating, the power is transmitted to the hook through the winch, and the drilling tool is suspended for operation. Under normal circumstances, the hook weighing about 3.5 tons moves up and down within the range of 0-40m. When tripping out, under the influence of gravity acceleration and other factors, the hook moves rapidly downward without load and stops at a distance of 0.2m from the turntable surface, which is prone to dangerous accidents where the hook hits the turntable surface of the drill floor. In traditional operations, the driller relies on experience and visual inspection to control the distance between the traveling...

Images