CN101210488B - Tamping-proof monitoring device for drilling platform turntable surface of drilling machine used for petroleum exploration - Google Patents

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

A kind ofly be used for oil exploration with the anti-supervising device of pounding of the platform turntable surface of drilling of rig

Technical field

The present invention relates to a kind ofly be used for oil exploration with the anti-supervising device of pounding of the platform turntable surface of drilling of rig, belong to oil exploration with rig supervising device technical field.

Background technology

At the oil exploration drilling scene, during the rig operation, to hook, suspending drilling tool in midair and carrying out operation by the winch transferring power.Generally speaking, heavily about 3.5 tons be hooked in greatly in 0～40m scope and move up and down.When making a trip, be hooked in the unloaded down rapid movement downwards of influence of factors such as acceleration of gravity greatly, stop at distance turntable surface 0.2m place, be easy to occur pounding under the hook peril of platform turntable surface of drilling.In the traditional work, the driller controls the distance of tourist bus and platform turntable surface of drilling by experience and range estimation, and winch is braked or the Parking operation, careless slightlyly is easy to occur the security incident of pounding rotating disk down.

Summary of the invention

The purpose of this invention is to provide a kind of simply, hook is transferred the oil exploration that is used for that can in time brake prevent the supervising device pounded with the platform turntable surface of drilling of rig.

For realizing above purpose, technical scheme of the present invention provides and a kind ofly is used for oil exploration with the anti-supervising device of pounding of the platform turntable surface of drilling of rig, it is characterized in that, by the photoelectric encoder sensor, anti-pound controller, the hydraulic control proportioning valve is formed, the photoelectric encoder sensor is by preventing that pounding controller is connected with the hydraulic control proportioning valve.

Described photoelectric encoder sensor is by 6 triode Q1-Q6,2 diode D1-D2,5 resistance R 1-R5 form, the colelctor electrode of triode Q1 is connected with power supply by resistance R 1, the base stage of triode Q1 is connected with the base stage of triode Q2, and be connected with the emitter stage of resistance R 3 with triode Q3, resistance R 3 other ends connect power supply, and by 2 diode D1, D2 is connected with signal ground GND, the emitter stage of triode Q1 is connected with the emitter stage of triode Q2, and connection A phase signals, triode Q2 colelctor electrode is connected with the colelctor electrode of triode Q3, the colelctor electrode of triode Q4 is connected with power supply by resistance R 2, the base stage of triode Q4 is connected with the base stage of triode Q5, and be connected with the emitter stage of resistance R 4 with triode Q6, resistance R 4 other ends connect power supply, the emitter stage of triode Q4 is connected with the emitter stage of triode Q5, and connection B phase signals, triode Q5 colelctor electrode is connected with the colelctor electrode of triode Q6, and be connected with signal ground GND, described A phase signals and B phase signals are that phase difference is one group of signal of 90 degree, differ 90 receivers of spending by two of sensor internals putting of physical location and form.

Describedly anti-pound controller by on-site programmable gate array FPGA, photoelectric isolating circuit, a kind of international standard test protocol JTAG mouth that combined testing action group formulates, operation push-button, power isolation module, signal amplification circuit, power amplification circuit, indicator lamp, LCD MODULE and crystal oscillating circuit are formed, on-site programmable gate array FPGA respectively with photoelectric isolating circuit, a kind of international standard test protocol JTAG mouth that combined testing action group formulates, operation push-button, power isolation module, signal amplification circuit, indicator lamp, LCD MODULE is connected with crystal oscillating circuit, photoelectric isolating circuit is connected with the input of photoelectric encoder sensor signal, the input of 24V power supply is imported with sensor signal respectively, power isolation module is connected with power amplification circuit, and power amplification circuit is connected with solenoid-driven output.

The present invention adopts and prevents pounding controller, need not the gas control element, and directly electricity consumption signal controlling hydraulic control proportioning valve is in time braked in the time of can transferring hook.

Advantage of the present invention is to solve the anti-problem of pounding of on-the-spot platform turntable surface of drilling, reduces accident potential, improves on-the-spot safety.

Description of drawings

Fig. 1 is used for oil exploration and prevents the supervising device structure calcspar pounded with the platform turntable surface of drilling of rig for a kind of;

Fig. 2 is photoelectric encoder Fundamentals of Sensors figure;

Fig. 3 is a dipulse signal conversion schematic diagram;

Fig. 4 is the anti-controller circuitry calcspar of pounding;

Fig. 5 is a software control flow chart.

The specific embodiment

The invention will be further described below in conjunction with drawings and Examples.

Embodiment

As shown in Figure 1, be used for oil exploration with the anti-supervising device structure calcspar of pounding of the platform turntable surface of drilling of rig for a kind of, described a kind of be used for oil exploration with the anti-supervising device of pounding of the platform turntable surface of drilling of rig by photoelectric encoder sensor 1, anti-ly pound controller 2, hydraulic control proportioning valve 3 is formed, photoelectric encoder sensor 1 is by preventing that pounding controller 2 is connected with hydraulic control proportioning valve 3.

As shown in Figure 2, be photoelectric encoder Fundamentals of Sensors figure, described photoelectric encoder sensor 1 is by 6 triode Q1-Q6,2 diode D1-D2,5 resistance R 1-R5 form, the colelctor electrode of triode Q1 is connected with power supply by resistance R 1, the base stage of triode Q1 is connected with the base stage of triode Q2, and be connected with the emitter stage of resistance R 3 with triode Q3, resistance R 3 other ends connect power supply, and by 2 diode D1, D2 is connected with signal ground GND, the emitter stage of triode Q1 is connected with the emitter stage of triode Q2, and connection A phase signals, triode Q2 colelctor electrode is connected with the colelctor electrode of triode Q3, and the colelctor electrode of triode Q4 is connected with power supply by resistance R 2, and the base stage of triode Q4 is connected with the base stage of triode Q5, and be connected with the emitter stage of resistance R 4 with triode Q6, resistance R 4 other ends connect power supply, and the emitter stage of triode Q4 is connected with the emitter stage of triode Q5, and connect the B phase signals, triode Q5 colelctor electrode is connected with the colelctor electrode of triode Q6, and is connected with signal ground GND.

Phase_A among Fig. 2 and Phase_B are that phase difference is one group of signal of 90 degree, differing 90 receivers of spending by two of sensor internals putting of physical location forms, just can judge winch drum shaft by this group signal is just to change or reversing, thereby reflect that indirectly hook is in rising or downward trend, be the direction of motion of hook, the direction of motion of hook can be derived by following formula:

A, B phase signals are carried out conversion, obtain the rising edge A+ of A, the rising edge B+ of B, the trailing edge A-of A, the trailing edge B-of B, the inverted signal of the inverted signal B of A is as shown in Figure 3.

Through the truth table abbreviation, can obtain following logic reflection formula:

The hook motion state that its result shows, as shown in the table:

DOWN	UP	The hook motion state
			1	0	Descend
0	1	Rise
			0	0	Remain unchanged
1	1	Remain unchanged

After obtaining the hook direction of motion, can obtain winch counting Cnt to rising or the dropping signal counting, Cnt reduces, and the expression hook moves downward, and Cnt increases, the expression hook moves upward, and Cnt is in fact just corresponding the absolute position of hook (hook position), and calculate by following formula the hook position

Pos＝Cnt×k

Pos: hook absolute position (hook position)

Cnt: the counting of winch

K: slope coefficient, to calculate according to the calibrating parameters that is provided with, computational methods are as follows:

$\stackrel{:}{k=}\frac{\mathrm{\&Delta;Pos}}{\mathrm{\&Delta;Cnt}}=\frac{\mathrm{Pos}2-\mathrm{<figure-callout\; id="1"\; label="Pos"\; filenames="S2007101728340E00031.png"\; state="\{\{state\}\}">Pos</figure-callout>}1}{\mathrm{Cnt}2-\mathrm{<figure-callout\; id="1"\; label="Cnt"\; filenames="S2007101728340E00031.png"\; state="\{\{state\}\}">Cnt</figure-callout>}1}$

Δ Pos: linear calibration's hook displacement

Δ Cnt: linear calibration's winch counter incrementing

Pos2, Pos1: linear calibration's interval endpoint value [Pos1, Pos2] of hook place value

Cnt2, Cnt1: linear calibration's interval endpoint value [Cnt1, Cnt2] of winch counting

Because hook can be transferred to 0.2m during normal operation,,, also to need calculating that hook speed is detected thus in conjunction with the hook direction of motion and speed factor so that light judges whether to move by the height thresholding is worthless near the position of zero-bit.

As shown in Figure 4, be the anti-controller circuitry calcspar of pounding, describedly anti-pound controller 2 by on-site programmable gate array FPGA, photoelectric isolating circuit, a kind of international standard test protocol JTAG mouth that combined testing action group formulates, operation push-button, power isolation module, signal amplification circuit, power amplification circuit, indicator lamp, LCD MODULE and crystal oscillating circuit are formed, on-site programmable gate array FPGA respectively with photoelectric isolating circuit, a kind of international standard test protocol JTAG mouth that combined testing action group formulates, operation push-button, power isolation module, signal amplification circuit, indicator lamp, LCD MODULE is connected with crystal oscillating circuit, photoelectric isolating circuit is connected with the input of photoelectric encoder sensor signal, the input of 24V power supply is imported with sensor signal respectively, power isolation module is connected with power amplification circuit, and power amplification circuit is connected with solenoid-driven output.

Described on-site programmable gate array FPGA is made up of signal shaping, digital filtering, the computing of hook direction of motion combinational logic, TKS51 nuclear and ∑-Δ DAC nuclear, the signal shaping input is connected with photoelectric isolating circuit, output is connected with the computing of hook direction of motion combinational logic by digital filtering, the computing of hook direction of motion combinational logic is connected with ∑-Δ DAC nuclear by TKS51 nuclear, and ∑-Δ DAC nuclear is connected with signal amplification circuit.

Anti-core of pounding controller is with 3 (FPGA) among Fig. 4, adopted the FPGA of 50,000 XC3S50 of the Spartan-3 series of Xilinx at this, realize various digital filterings with this FPGA, logical operation, the D/A conversion, button is handled, the signal indication, display driver, the control function, software adopts VHDL and C establishment, write realization according to the logic reaction equation that Fig. 3 derives with VHDL language, the inner integrated soft nuclear of TKS51 of FPGA, ∑-soft the nuclear of Δ DAC, the hook position, the calculating of hook speed, the early warning module, control module, DAC drives and all adopts 51 soft nuclears to programme, and the code of each module adopts C to write.

The anti-controller circuitry of pounding shown in Figure 4 is except that the signal acquisition process function, and also integrated signal output drives interface, by driving back output hydraulic control proportioning valve.Proportioning valve is the oil circuit stopped of access dish directly, and winch is braked, and for the output of slowing down, drives the interface output voltage U and is the inverse relation of " U=C/Pos " with hook position Pos, and C is a constant in the formula.The unlatching amplitude of proportioning valve that the size of driving interface output voltage is promptly corresponding is proportional to the size of exporting brake positive pressure, and promptly the hook position is low more, and output voltage is big more, and brake pressure is big more, and the deceleration effect is obvious more.By rational signal output is set, can realize the deceleration or the braking of winch.

Photoelectric encoder sensor 1 is installed on the winch drum shaft, follows winch drum shaft and rotates.Because promptly corresponding the rotating counterclockwise clockwise of winch drum shaft that move up and down of hook, so can monitor the pulse signal of 90 ° of two phase differences between channels shown in Figure 2, this signal has reflected the movement position and the direction of hook indirectly.Prevent pounding the control centre that controller 2 is whole systems, gather photoelectric encoder sensor 1 in real time, handle the absolute position and the speed of service calculate hook by software, and according to the unlatching amplitude of speed and Position Control hydraulic control proportioning valve 3, thereby corresponding brake pressure exported.When hook moves downward at a high speed, when the hook position is lower than the early warning value of setting, export a less control signal, the unlatching amplitude of hydraulic control proportioning valve is less, and hook is slowed down.When the hook position is lower than alarm limit, export a bigger control signal, the unlatching amplitude of hydraulic control proportioning valve strengthens, and hook is braked, and guarantees the safety of platform turntable surface of drilling.

Velocity sensor is not adopted in the hook speed monitoring, but calculates by software, simultaneously, calculates acceleration, carries out the fall off rate control of closed loop by the variation tendency of acceleration, interior braking in time when guaranteeing to enter the hazardous area that is lower than 0.2m.

ΔS＝S1-S0

Δ S: hook displacement

S1: the hook position of current time

S0: the hook position in a last moment

V＝ΔS/t

V: hook speed

T: the time, time=current time-last constantly

a＝ΔV/T

A: hook acceleration

Δ V: hook speed increment

ΔV＝V1-V0

V1: the hook speed of current time

V0: the hook speed in a last moment.

For the various interference of situ of drilling well, as grid disturbance, electric motor starting, the transition that stops to cause are disturbed, the irregular interference after encoder is vibrated etc., and the digital filtering method that the employing program is judged is solved.By anti-impulse disturbances average value filtering and quadravalence IIR elliptic filter linkage analysis, remove the interfering signal of various falsenesses.

Claims (1)

1. one kind is used for the supervising device that oil exploration is prevented pounding with the platform turntable surface of drilling of rig, it is characterized in that, by photoelectric encoder sensor (1), anti-pound controller (2), hydraulic control proportioning valve (3) is formed, photoelectric encoder sensor (1) is by preventing that pounding controller (2) is connected with hydraulic control proportioning valve (3);

Described photoelectric encoder sensor (1) is by 6 triode Q1-Q6,2 diode D1-D2,5 resistance R 1-R5 form, the colelctor electrode of triode Q1 is connected with power supply by resistance R 1, the base stage of triode Q1 is connected with the base stage of triode Q2, and be connected with the emitter stage of resistance R 3 with triode Q3, resistance R 3 other ends connect power supply, and be connected with signal ground GND by 2 diode D1-D2, the emitter stage of triode Q1 is connected with the emitter stage of triode Q2, and connection A phase signals, triode Q2 colelctor electrode is connected with the colelctor electrode of triode Q3, the colelctor electrode of triode Q4 is connected with power supply by resistance R 2, the base stage of triode Q4 is connected with the base stage of triode Q5, and be connected with the emitter stage of resistance R 4 with triode Q6, resistance R 4 other ends connect power supply, the emitter stage of triode Q4 is connected with the emitter stage of triode Q5, and connection B phase signals, triode Q5 colelctor electrode is connected with the colelctor electrode of triode Q6, and be connected with signal ground GND, described A phase signals and B phase signals are that phase difference is one group of signal of 90 degree, differ 90 receivers of spending by two of photoelectric encoder sensor internals putting of physical location and form;

Describedly anti-pound controller (2) by on-site programmable gate array FPGA, photoelectric isolating circuit, a kind of international standard test protocol JTAG mouth that combined testing action group formulates, operation push-button, power isolation module, signal amplification circuit, power amplification circuit, indicator lamp, LCD MODULE and crystal oscillating circuit are formed, on-site programmable gate array FPGA respectively with photoelectric isolating circuit, a kind of international standard test protocol JTAG mouth that combined testing action group formulates, operation push-button, power isolation module, signal amplification circuit, indicator lamp, LCD MODULE is connected with crystal oscillating circuit, photoelectric isolating circuit is connected with the input of photoelectric encoder sensor signal, the input of 24V power supply is imported with the photoelectric encoder sensor signal respectively, power isolation module is connected with power amplification circuit, and power amplification circuit is connected with solenoid-driven output.

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