A drilling rig hoisting rope detection device and detection method

Abstract

A drilling rig hoisting rope detection device, wherein a magnetic flux leakage detection component is fixed on a trolley bottom plate through a component bracket; a rope guide device is installed at the front and rear ends of the magnetic flux leakage detection component; a horizontal guide wheel device is composed of a self-rotating horizontal guide wheel and a support, and is installed on the trolley bottom plate on the inner side of a guide wheel spacing adjustment device through the support; the magnetic flux leakage detection component is connected to a signal box and an operation panel through a wire, and the signal box records various parameters of the rope detected by the magnetic flux leakage detection component and displays them on the operation panel. The present invention solves the problems of inconsistent detection speed of the hoisting rope, difficulty in re-inspection of defective parts, high labor intensity, easy wear of the guide sleeve inside the magnetic flux leakage detection component, low detection efficiency, and signal misjudgment.

Description

Technical Field

[0001] The invention relates to the technical field of drilling rig hoisting rope detection, and in particular to a drilling rig hoisting rope detection device and a detection method. Background Art

[0002] The hoisting rope of the drilling rig is used to lift the derrick before the drilling operation begins and to lower the derrick after the drilling operation. The diameter of the commonly used hoisting rope is between 60mm and 80mm, and the length is generally several hundred meters. As the domestic drilling depth becomes deeper and deeper, the corresponding drilling rig capacity is also getting stronger and stronger. The ultra-deep well drilling rig with a drilling depth of more than 10,000 meters is the current development trend. The corresponding hoisting rope diameter also needs to be thicker, and hoisting ropes with a diameter greater than 80mm are increasingly used. The hoisting rope is used in a harsh environment and is easily bumped and rubbed during transportation and use. Due to the limitations of on-site operating conditions, it is difficult to carry out scientific maintenance of the hoisting rope. Once the hoisting rope breaks during the operation, it will directly lead to the collapse of the derrick, causing huge property losses and casualties. In order to ensure the safe and smooth lifting and lowering of the drilling rig, the hoisting rope needs to have reliable performance. Generally, magnetic leakage detection is used to troubleshoot the hoisting rope before the derrick is lifted, and the wire rope with excessive defects is replaced in time.

[0003] For wire ropes used in other domestic fields such as elevators, docks and bridges, the diameters of these wire ropes are generally small, usually not exceeding 50mm. Because the wire ropes are relatively long, the working parts are fixed and uniform, the demand for testing is large, the testing technology is relatively mature, and the testing efficiency and accuracy are relatively high.

[0004] The diameter of the lifting rope is very large and cannot be moved by manpower. It is short and needs to be disassembled and installed frequently. The market demand is not high. There is a large demand for wire rope testing for elevators, docks and bridges. There is currently no more reasonable testing method. There are four common testing methods: one is to fix the testing instrument, use a crane to slowly lift the lifting rope, or use a motor vehicle to slowly drag the lifting rope so that the lifting rope passes through the testing instrument. The disadvantage is that the speed and speed uniformity cannot be controlled, which affects the detection accuracy. When encountering defective signals and need to be re-inspected in the reverse direction, the operation is difficult. The lifting rope has a poor centering effect, which can easily cause wear of the guide sleeve inside the testing instrument.

[0005] The second is to fix the position of the detection instrument and detect during the lifting process of the drilling rig, relying on the lifting of the drilling rig to realize the action of the lifting rope passing through the detection instrument. The disadvantage is that after the detection defect is found, it will be troublesome to replace the lifting rope according to the judgment, which will affect the construction progress. Part of the lifting rope has been passed through the derrick, and the blind end cannot be detected, resulting in missed detection.

[0006] The third method is to place the wire rope on the ground, and the inspector holds the instrument and slides on the wire rope. Because the wire rope is too heavy, three to four people are needed to lift the lifting rope. The detection efficiency is low and the labor intensity is high. It is only suitable for local detection of a certain section of the lifting rope. The lifting rope has a poor centering effect, which can easily cause the guide sleeve of the detection instrument to wear. The speed and uniformity cannot be controlled, which affects the detection accuracy.

[0007] Fourth, several motor vehicles are used to coordinate with each other to straighten the hoisting rope in sections, and the detection instrument is slid on the rope to achieve the detection purpose. Because the hoisting rope has a large load-bearing capacity, it cannot be absolutely straightened and tends to be bent. The centering effect is not good, which can easily cause the guide sleeve inside the detection instrument to wear, and the overall operation is troublesome and inefficient.

[0008] In traditional wire rope inspection, defects are mainly local defects such as broken wires and rust. In the retrieved wire rope inspection patents, there is only one column of local defect leakage magnetic field sensors inside the leakage magnetic field detection component. This column of leakage magnetic field sensors is composed of multiple probes. If the sensor is damaged during the inspection process, or there are interference factors such as metal impurities on the lifting rope, it is very easy to cause misjudgment. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide a drilling rig lifting rope detection device and detection method. Through the detection device and detection method, the problems of inconsistent lifting rope detection speed, difficult re-inspection of defective parts, high labor intensity, easy wear of the internal guide sleeve of the leakage magnetic detection component, low detection efficiency and signal misjudgment can be solved.

[0010] In order to solve the above technical problems, the technical solution of the present invention is:

[0011] A drilling rig hoisting rope detection device, characterized in that it comprises a magnetic flux leakage detection component, a component bracket, a trolley bottom plate, a large rope guide device, a horizontal guide wheel device, and an operation panel; the magnetic flux leakage detection component is fixed on the trolley bottom plate through the component bracket;

[0012] The large rope guide device is composed of a guide wheel and a guide wheel spacing adjustment device; there is a protruding shaft at the bottom of the guide wheel, and the guide wheel can rotate along the shaft. The upper side and right side of the guide wheel spacing adjustment device are provided with oblong slots, and the shaft of the guide wheel extends into the upper slot. The fixing bolt is connected to the shaft of the guide wheel through the slot on the right side. Two guide wheels are installed on each guide wheel spacing adjustment device; the large rope guide device is installed at the front and rear ends of the magnetic flux leakage detection component;

[0013] The horizontal guide wheel device is composed of a self-rotating horizontal guide wheel and a support, and is mounted on the trolley bottom plate on the inner side of the guide wheel spacing adjustment device through the support;

[0014] The magnetic flux leakage detection component is connected to the signal box and the operation panel through wires. The signal box records various parameters of the rope detected by the magnetic flux leakage detection component and displays them on the operation panel.

[0015] The magnetic leakage detection component consists of an excitation coil, a magnetic leakage sensor, a guide sleeve and a stroke sensor; the excitation coil is sleeved on both ends of the outer ring of the guide sleeve, the magnetic leakage sensor is installed in the middle of the conductor sleeve, the magnetic leakage sensor is composed of a local defect magnetic leakage sensor and a cross-sectional area change sensor, the cross-sectional area change sensor is sleeved in the middle of the guide sleeve, two local defect magnetic leakage sensors are respectively on both sides of the cross-sectional area change sensor and sleeved on the guide sleeve, and a guide sleeve is installed at the end of the guide sleeve.

[0016] A trolley push frame is installed on the trolley bottom plate, and four walking wheels are installed at the bottom of the trolley bottom plate. The walking wheels are equipped with motors and power transmission devices. The motor provides power to the walking wheels through the power transmission device. The trolley bottom plate is also equipped with a power supply for powering the leakage magnetic detection components.

[0017] A detection method using a drilling rig hoisting rope detection device, characterized in that the detection method comprises the following steps:

[0018] (1) Place the hoisting rope in a straight line on the horizontal ground, and adjust the guide wheel spacing according to the rope diameter. The guide wheel spacing should be 5 mm larger than the wire rope diameter.

[0019] (2) Turn on the operation panel, set the travel speed parameters, and check whether the trolley is normal; enter the lifting rope information on the operation panel and set the magnetic flux leakage detection signal threshold value;

[0020] (3) Pass a sample rope with the same specifications as the hoisting rope to be inspected through the magnetic flux leakage detection component, and inspect the sample rope to see whether the amplitude value of the sample rope defect signal is abnormal. If there is no abnormality, the next step of inspection can be carried out; if there is an abnormality, check the device until it is normal;

[0021] (4) After passing the wire rope to be inspected between the two guide wheels, it passes through the guide sleeve of the magnetic flux leakage detection component, and adjust the position of the trolley so that the moving direction is parallel to the axis of the lifting rope; click the operation panel to make the trolley move forward;

[0022] (5) Monitor the magnetic flux leakage signal curve on the operation panel in real time. When the abnormal signal amplitude exceeds the threshold value, an alarm will be issued to stop the vehicle.

[0023] (6) After the test is completed, the system automatically generates a report. The report can be viewed and modified through the operation panel, and printed after confirmation.

[0024] After adopting the above technical solution, the beneficial effects of the present invention are:

[0025] (1) The traditional detection method of manual operation cannot ensure the uniformity of the detection speed of the lifting rope, which has a great impact on the change in the amplitude of the leakage magnetic signal, and is prone to misjudgment or missed detection. The present invention controls the speed of the trolley through a motor to achieve a uniform speed of the trolley, eliminating the adverse effects of speed changes.

[0026] (2) In the conventional detection method using fixed detection instruments, it is very difficult to re-inspect the defective parts of the lifting rope by operating in the reverse direction. In the present invention, the trolley moves in the reverse direction after receiving the backward command, which makes it easy to re-inspect the defective parts.

[0027] (3) In the traditional detection method using manual sliding detection instruments, the labor intensity is high and the efficiency is low, and it requires the cooperation of multiple people to complete. In the present invention, the detection personnel can realize real-time monitoring of the movement of the trolley and the leakage magnetic detection signal by controlling the operation panel. One employee can complete the entire process with high efficiency.

[0028] (4) The present invention solves the problem of the large rope being out of straightness due to its own gravity during the detection process, which affects the detection result, by using multiple guiding and supporting functions such as the large rope guiding device, the horizontal guiding wheel device, and the guiding sleeve inside the magnetic flux leakage detection instrument, thereby preventing the hoisting large rope from running off track and improving the accuracy of the detection. In the traditional detection method, the guide sleeve inside the detection instrument is severely worn and has a short replacement cycle. Compared with the traditional detection instrument, the present invention adds a guide wheel and adopts a dual guiding method of the guide sleeve and the guide wheel, which reduces the wear of the hoisting large rope on the guide sleeve and greatly improves the service life of the guide sleeve.

[0029] (5) The operating system of the present invention can automatically generate a report after the detection operation is completed, and can print the report online, thereby improving the efficiency of report issuance, standardizing the report editing and approval process, ensuring the authenticity of the data, and eliminating report fraud.

[0030] (6) By arranging two rows of local defect leakage magnetic sensors along the axial direction of the lifting rope, the front and rear sensors collect signals at the same time and perform signal comparison on the operation panel to reduce the possibility of misjudgment of defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0032] Figure 2 It is a bottom view schematic diagram of the structure of the embodiment;

[0033] Figure 3 It is a cross-sectional schematic diagram of a magnetic flux leakage detection component;

[0034] Figure 4 This is a flow chart of the detection operation.

[0035] Markings in the figure:

[0036] 1-leakage magnetic flux detection component; 101-excitation coil; 102-local defect leakage magnetic flux sensor; 103-cross-sectional area change sensor; 104-guide sleeve; 105-stroke sensor; 2-component bracket; 3-trolley bottom plate; 4-guide wheel; 5-guide wheel spacing adjustment device; 6-horizontal guide wheel device; 7-trolley push frame; 8-travel wheel; 9-operation panel; 10-power supply; 11-signal box; 12-motor; 13-power transmission device. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below based on the drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] like Figure 1-3 As shown, a drilling rig hoisting rope detection device includes a magnetic flux leakage detection component 1, a component bracket 2, a trolley bottom plate 3, a guide wheel 4, a guide wheel spacing adjustment device 5, a trolley push frame 7, a walking wheel 8, an operation panel 9, a power supply 10, a signal box 11, a motor 12, a power transmission device 13, etc. The magnetic flux leakage detection component 1 is fixed on the trolley bottom plate 3 through the component bracket 2.

[0039] The large rope guiding device is composed of a guide wheel 4 and a guide wheel spacing adjusting device 5. There is a protruding shaft at the bottom of the guide wheel 4, and the guide wheel 4 can rotate along the shaft. The upper and right sides of the guide wheel spacing adjusting device 5 are provided with oblong slots, and the shaft of the guide wheel 4 extends into the upper slot. The fixing bolt is connected to the shaft of the guide wheel 4 through the slot on the right. Two guide wheels 4 are installed on each guide wheel spacing adjusting device 5, and guide wheels 4 are respectively installed on the inlet side and the outlet side of the leakage magnetic detection component 1. The lifting rope is clamped in the middle by the guide wheels 4, and the left and right directions of the lifting rope are guided by the rotation of the guide wheels 4.

[0040] The horizontal guide wheel device 6 is composed of a self-rotating horizontal guide wheel and a support. The hoisting rope rolls on the upper part of the horizontal guide wheel device 6 to guide the hoisting rope in the vertical direction. The horizontal guide wheel device 6 is installed on the inner side of the rope guide device. By limiting the horizontal and vertical guidance of the hoisting rope, the wear of the hoisting rope on the guide sleeve of the leakage magnetic detection component 1 is reduced. The relative rolling between the horizontal guide wheel of the horizontal guide wheel device 6 and the hoisting rope reduces the resistance of the trolley during travel. The guide wheel spacing adjustment device 5 makes the spacing of the guide wheels 4 adjustable to meet the detection requirements of hoisting ropes of different diameters. The spacing of the guide wheels 4 is 5 mm larger than the nominal diameter of the hoisting rope.

[0041] A trolley push frame 7 is installed on the trolley bottom plate 3, and four running wheels 8 are installed at the bottom of the trolley bottom plate 3. The running wheels 8 are equipped with a motor 12 and a power transmission device 13. The motor 12 provides power to the running wheels 8 through the power transmission device 13. A power supply 10 is also installed on the trolley bottom plate 3 for supplying power to the leakage magnetic detection component 1. The trolley push frame 7 is used to adjust the running direction of the trolley or move the position of the trolley. The motor 12, the power transmission device 13 and the running wheels 8 are connected in sequence, and the running wheels 8 drive the trolley to run. The power supply 10 provides strong electricity to the motor 12 and weak electricity to the leakage magnetic detection component 1. The operation panel 9 controls the running start, running stop, steering, retreat and running speed control of the running wheels 8 through the signal box 11. The leakage magnetic detection component 1, the signal box 11 and the operation panel 9 are connected in sequence through the signal line. The operation panel 9 displays the leakage magnetic signal curve of the hoisting rope in real time. When encountering a defect signal exceeding the threshold value, an alarm prompt sound is issued, and the trolley is ordered to stop moving and the trolley is retreated for re-inspection. After the detection is completed, the operation panel 9 automatically generates a report, and the report can be printed online after the modification operation is performed.

[0042] The magnetic flux leakage detection component 1 is the core component of magnetic flux leakage detection, and is composed of an excitation coil 101, a magnetic flux leakage sensor, a guide sleeve 104, and a stroke sensor 105. The excitation coil 101 is used to apply a magnetic field to the hoisting rope. The magnetic flux leakage sensor is composed of a local defect magnetic flux leakage sensor 102 and a cross-sectional area change sensor 103, which is used to detect defects such as broken wire, flattening deformation, rust and wear, and transmit the defect signal to the signal box 11, and finally displayed on the operation panel 9. Two rows of local defect magnetic flux leakage sensors 102 and one row of cross-sectional area change sensors 103 are arranged along the axial direction of the hoisting rope. The cross-sectional area change sensor 103 can be arranged in the middle of the two rows of local defect magnetic flux leakage sensors 102. In addition, the axial positions of the local defect magnetic flux leakage sensors 102 and the cross-sectional area change sensors 103 can overlap or not overlap, but the axial positions of the two rows of local defect magnetic flux leakage sensors 102 cannot overlap, and can only be placed front and back along the axial direction. Each row of local defect magnetic flux leakage sensors 102 is composed of more than two probes to achieve full coverage of the cross-sectional signal. After both local defect leakage magnetic sensors 102 detect abnormal signals, signal comparison will be performed on the operation panel. When the amplitude of the abnormal signal exceeds the threshold value, the operation panel 9 will alarm and stop the vehicle. The two local defect leakage magnetic sensors 102 detect simultaneously to ensure that the abnormal signal can be accurately identified and reduce the possibility of misjudgment.

[0043] The guide sleeve 104 is used to protect the excitation coil 101 and the sensor, guide the movement direction of the hoisting rope, prevent the hoisting rope from running off, and eliminate the wear on the excitation coil 101 and the sensor. The guide sleeve 104 is made of nylon, and the inner diameter of the guide sleeve 104 is 5mm larger than the nominal diameter of the hoisting rope. The travel sensor 105 is used to record the relative movement displacement of the leakage magnetic detection component 1 on the hoisting rope, so as to achieve a one-to-one correspondence between the defect signal and the actual position.

[0044] A drilling rig hoisting rope detection device and detection method, the detection method steps are as follows:

[0045] Step S01, the detection operation starts and preparations are made.

[0046] Step S02, place the lifting rope in a straight line on the horizontal ground to facilitate the detection of the trolley. According to the diameter of the wire rope, the spacing between the guide wheels 4 on the inlet and outlet sides of the magnetic flux leakage detection component 1 is adjusted respectively. According to experience, the spacing between the guide wheels 4 is 5mm larger than the nominal diameter of the lifting rope. The guide wheel spacing adjustment device 5 has a certain height, which can lift the lifting rope and reduce the bending of the lifting rope as much as possible in the vertical direction.

[0047] Step S03, the operation panel 9 is turned on, and the power supply 10 is checked. If the power is insufficient, it needs to be charged in time. The travel speed parameters are set according to the experience value, and the travel start, travel stop, turn, back and travel speed control of the trolley are checked to be normal. The lifting rope information is input on the operation panel 9, and the leakage magnetic detection signal threshold value is set.

[0048] Step S04: Pass a sample rope with the same specifications as the hoisting rope to be inspected through the magnetic flux leakage detection component 1 to detect whether the sample rope defect signal amplitude value is abnormal. If there is no abnormality, the next step of detection can be carried out. If there is an abnormality, the cause needs to be found to restore the defect signal amplitude value to normal.

[0049] Step S05, place one end of the wire rope to be inspected in the magnetic flux leakage detection component 1, adjust the position of the trolley so that the moving direction is parallel to the axis of the lifting rope. Click the moving button on the operation panel 9 to make the trolley move forward. During the forward movement, pay attention to whether the trolley moves at a uniform speed and whether there is any obstruction. If there is any obstruction, stop the machine for inspection, find out the cause and eliminate it.

[0050] Step S06, real-time monitoring of the magnetic flux leakage signal curve on the operation panel 9, when the abnormal signal amplitude exceeds the threshold value, an alarm will be sounded to stop the vehicle, at which time the defect can be checked and marked. If necessary, the vehicle can be retracted for re-inspection to further confirm the severity and location of the defect.

[0051] Step S07, after the detection is completed, the system automatically generates a report, and the report can be checked and modified through the operation panel 9. After confirmation, the report can be printed online.

[0052] Step S08, after the operation is completed, the power is turned off, the cables are unplugged, the lifting rope is taken out from the magnetic flux leakage detection component 1, and the site is cleaned up.

[0053] The present invention replaces the previous manual detection by setting up a professional monitor to detect the big rope, thereby improving the stability of the traveling speed of the trolley. At the same time, multiple guiding and supporting functions such as a big rope guiding device, a horizontal guiding wheel device, and a guiding sleeve inside the leakage magnetic detection instrument are added to the trolley, thereby solving the problem that the big rope is not straight due to its own gravity during the detection process, affecting the detection result, preventing the lifting big rope from running off, and improving the accuracy of detection.

[0054] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limiting the present invention.

Claims

1. A drilling rig hoisting rope detection device, characterized in that: It includes a magnetic flux leakage detection component, a component bracket, a trolley bottom plate, a large rope guide device, a horizontal guide wheel device, and an operation panel; the magnetic flux leakage detection component is fixed on the trolley bottom plate through the component bracket; The large rope guide device is composed of a guide wheel and a guide wheel spacing adjustment device; there is a protruding shaft at the bottom of the guide wheel, and the guide wheel can rotate along the shaft. The upper side and right side of the guide wheel spacing adjustment device are provided with oblong slots, and the shaft of the guide wheel extends into the upper slot. The fixing bolt is connected to the shaft of the guide wheel through the slot on the right side. Two guide wheels are installed on each guide wheel spacing adjustment device; The large rope guide device is installed at the front and rear ends of the magnetic flux leakage detection component; The horizontal guide wheel device is composed of a self-rotating horizontal guide wheel and a support, and is mounted on the trolley bottom plate on the inner side of the guide wheel spacing adjustment device through the support; The magnetic leakage detection component is composed of an excitation coil, a magnetic leakage sensor, a guide sleeve and a stroke sensor; the excitation coil is sleeved on both ends of the outer ring of the guide sleeve, a magnetic leakage sensor is installed in the middle of the guide sleeve, the magnetic leakage sensor is composed of a local defect magnetic leakage sensor and a cross-sectional area change sensor, the cross-sectional area change sensor is sleeved in the middle of the guide sleeve, two local defect magnetic leakage sensors are respectively on both sides of the cross-sectional area change sensor and sleeved on the guide sleeve, and a stroke sensor is installed at the end of the guide sleeve; The magnetic flux leakage detection component is connected to the signal box and the operation panel through wires. The signal box records various parameters of the rope detected by the magnetic flux leakage detection component and displays them on the operation panel. A trolley push frame is installed on the trolley bottom plate, and four walking wheels are installed at the bottom of the trolley bottom plate. The walking wheels are equipped with motors and power transmission devices. The motor provides power to the walking wheels through the power transmission device. The trolley bottom plate is also equipped with a power supply for powering the leakage magnetic detection components.

2. A detection method using the drilling rig hoisting rope detection device according to claim 1, characterized in that: The detection method steps are as follows: (1) Place the hoisting rope in a straight line on the horizontal ground, and adjust the guide wheel spacing according to the rope diameter. The guide wheel spacing should be 5 mm larger than the wire rope diameter. (2) Turn on the operation panel, set the travel speed parameters, and check whether the trolley is normal; enter the lifting rope information on the operation panel and set the magnetic flux leakage detection signal threshold value; (3) Pass a sample rope with the same specifications as the hoisting rope to be inspected through the magnetic flux leakage detection component, and inspect the sample rope to see whether the amplitude value of the sample rope defect signal is abnormal. If there is no abnormality, the next step of inspection can be carried out; if there is an abnormality, check the device until it is normal; (4) After passing the wire rope to be inspected between the two guide wheels, it passes through the guide sleeve of the magnetic flux leakage detection component, and adjust the position of the trolley so that the moving direction is parallel to the axis of the lifting rope; click the operation panel to make the trolley move forward; (5) Monitor the magnetic flux leakage signal curve on the operation panel in real time. When the abnormal signal amplitude exceeds the threshold value, an alarm will be issued to stop the vehicle. (6) After the test is completed, the system automatically generates a report. The report can be viewed and modified through the operation panel, and printed after confirmation.

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