WO2016070626A1

WO2016070626A1 - On-line detection device and method for tension of suspension ropes or stabilising ropes in construction vertical shaft

Info

Publication number: WO2016070626A1
Application number: PCT/CN2015/081598
Authority: WO
Inventors: 曹国华; 宴璐; 朱真才; 王彦栋; 彭维红; 王乃格; 王进杰; 刘善增; 沈刚; 张海翔
Original assignee: 中国矿业大学
Priority date: 2014-11-07
Filing date: 2015-06-17
Publication date: 2016-05-12
Also published as: CA2936463C; CN104374508A; CN104374508B; CA2936463A1

Abstract

Disclosed is an on-line detection device for the tension of suspension ropes (2) or stabilising ropes (3) in a construction vertical shaft, the device mainly being composed of tension detection devices (4) arranged on masts (6) and a steel wire rope frequency detection portion arranged on the surface of a shaft opening. The tension detection devices mainly comprise inclined surface supports (4-3) fixed on the masts (6) of sheaves (5), pressure sensors (4-2) fixedly mounted on inclined surfaces of the inclined surface supports (4-3) and bearing supports (4-1) fixedly connected to the pressure sensors (4-2). The steel wire rope frequency detection portion mainly comprises frequency detection devices (7) and a signal collector used for collecting frequency signals. The propagation frequency of vibration waves on a steel wire rope is periodically detected via a steel wire rope frequency detection device (7) arranged on a shaft cover platform (8), and the tension of the steel wire rope is obtained via the steel wire rope length 1 and the rope density ρ, effectively preventing measurement errors caused by an overturning moment of a bearing base, and thereby correcting the pressure sensor. The on-line detection device is simple in structure, convenient to operate, capable of real-time detection and easy to install, removal of the stabilising ropes is not necessary, measurement is accurate, and signal transmission is convenient. Also disclosed is an on-line detection method for the tension of the suspension ropes (2) or the stabilising ropes (3) in the construction vertical shaft using the on-line detection device.

Description

On-line detecting device and method for constructing vertical shaft suspension rope and steady rope tension

Technical field

The invention relates to an online detecting and detecting device and method for constructing a shaft suspension rope and a steady rope tension, and is particularly suitable for online detection of tension of a construction shaft suspension rope and a steady rope.

Background technique

At present, the detection of the hanging force of the vertical shaft is realized by providing a tension sensor at the connection between the steady rope and the hanging plate. However, in the installation, firstly, the steady rope needs to be removed first, and the tension sensor needs to be dustproof and waterproof. Moreover, since the hanging plate will be in a deep position of the wellbore after a period of construction, the steady rope will have a large tension, which results in a large torque of the steady rope. When the steady rope is removed, the steady rope will be severely twisted. It is easy to cause damage to the construction personnel, and it will cause the suspension plate to twist due to the unbalanced force; secondly, the tension sensor must be connected to the steady rope or the stable rope and the hanging plate at the initial stage of the construction, resulting in the signal It is difficult to pass downhole to the wellhead, making it difficult to achieve real-time detection. In addition to the method of using the tension sensor, the device for detecting the tension of the wire rope is clamped on the wire rope, and the hanging force of the hanging plate is indirectly measured by the lateral force, or a longitudinal deformation of the wire rope is clamped on the wire rope. The detecting device indirectly measures the hanging force of the hanging plate. The way of indirect measurement by clamping the lateral force of the wire rope is for the thinner steel wire rope, which can be more convenient to measure, but the suspension rope and the stable rope which are thicker for the construction vertical shaft hanging plate, due to the short distance and rigidity assembly The problem of large lateral pressing force and inaccurate measurement occurs, and the wire rope will be damaged due to excessive bending of the wire rope; a detecting device for measuring the longitudinal deformation of the wire rope is clamped on the wire rope to indirectly measure the lifting system. The measurement of wire rope tension must add a set of wireless node transmission equipment, which poses a great challenge to the detection cost.

Summary of the invention

Technical Problem: The object of the present invention is to provide an on-line inspection of the tension of the construction shaft suspension rope and the stability rope which is simple in structure, does not need to be removed and stabilized, is accurate in operation, and can be detected in real time in view of the problems existing in the prior art. Detection device and method.

Technical solution: The on-line detecting device for constructing vertical shaft suspension rope and steady rope tension of the invention comprises a signal processor, a well cover platform, a derrick disposed above the manhole cover platform, a plurality of sky wheels spaced on the derrick, and a winch at one end Fixed and the other end is inclined to bypass the sky wheel and vertically extend into a plurality of suspension ropes or stable ropes connected to the suspension plate in the well, and a tension detecting device is fixed on the derrick at each position of the balance wheel. The tension detecting device comprises a bearing support, a pressure sensor and a bevel bearing. The inclined bearing is fixed on the derrick by fixing bolts, and the pressure bearing and the bearing support arranged on the rotating shaft of the crown wheel are fixed on the inclined bearing seat. The well cover platform is provided with frequency detecting devices for respectively clamping a plurality of suspension ropes or stable ropes, and the frequency detecting device transmits the signal to the signal processor through the wireless signal, and the signal processor processes and calculates the signals.

The inclined angle of the inclined support is half of the angle between the inclined section of the suspension rope or the stable rope around the vertical wheel and the direction of the vertical section.

The frequency detecting device comprises two vibration blocks symmetrically arranged on two sides of a suspension rope or a steady rope, an acceleration sensor fixedly mounted outside a vibration block, and an acceleration transmitter is provided with a wireless transmitter, and the two vibration blocks are symmetric inside. There are a plurality of clamping wheels which are closely attached with the suspension rope or the stable rope. The upper and lower parts of the two vibration blocks are provided with clamping springs, and the bottoms of the two vibration blocks are respectively arranged to be movable in the platform of the well cover platform. The translation wheel.

Using the above-mentioned device for the on-line detection method of the construction shaft suspension rope and the steady rope tension, the tension T of the suspension rope or the steady rope is detected in real time by the pressure sensor, and the tension of the suspension rope or the stable rope is periodically checked by the frequency detecting device. T is tested and the obtained test results are used to correct the measurement results of the pressure sensor. The steps are as follows:

a. The tension of the suspension rope or the steady rope is detected in real time by the pressure sensor: when the tension of the suspension rope or the steady rope acts on the bearing support through the sky wheel, the force is transmitted to the fixed connection with the bearing support. The pressure sensor has an angle between the inclined section of the suspension rope or the steady rope and the vertical direction, and the tension of the suspension rope or the stable rope is T. According to the principle of the force synthesis, the pressure sensor is perpendicular to the pressure sensor. The pressure on the surface, ie the pressure F measured by the pressure sensor, is:

The tension T of the suspension rope or the stable rope is:

b. Regularly check the tension of the suspension rope or the stable rope by the frequency detecting device: since the translational wheel is stuck in the track of the manhole cover platform, the frequency detecting device can only move horizontally; the clamping block is hinged on the vibration block, and the clamping is performed The spring clamps the vibration block on both sides of the wire rope to the wire rope, and the clamping wheel ensures the movement of the wire rope in the vertical direction; the outer side of the vibration block is provided with an acceleration sensor, and the lateral vibration of the suspension rope or the stable rope is accelerated by the acceleration sensor. The acceleration signal is sent to the signal processor through a wireless transmitter disposed on the acceleration sensor, and the signal is processed by the signal processor to obtain the frequency ω of the lateral vibration of the suspension rope or the steady rope, and then according to the suspension rope or the stable rope during the measurement. Length l, and the density ρ of the wire rope, by the formula:

Calculate the tension T of the wire rope;

c. Compare the tension value measured by the pressure sensor with the tension value measured by the frequency detecting device. When the difference between the two results is greater than 20%, the pressure sensor is faulty, and the pressure sensor needs to be corrected or replaced. .

Advantageous Effects: Since the above technical solution is adopted, the suspension rope or the rope tension detecting device of the present invention can effectively avoid the measurement error caused by the overturning moment of the bearing seat, and the frequency detecting device installed on the manhole cover platform is used periodically. Measuring the tension of the wire rope to verify the pressure sensor measurement results, avoiding the possibility of real-time pressure sensors A problem that caused some fault to result in inaccurate measurement results. The utility model has the advantages of simple structure, convenient operation, real-time detection, simple installation, no need to remove the stable rope, accurate measurement, convenient signal transmission and wide practicality.

DRAWINGS

Figure 1 is a schematic diagram of vertical shaft construction;

Figure 2 is a schematic view showing the installation of the pressure sensor of the present invention;

Figure 3 is a schematic illustration of the frequency detecting device of the present invention.

In the figure: 1. hanging plate, 2. hanging rope, 3. steady rope, 4. tension detecting device, 4-1. bearing support, 4-2. pressure sensor, 4-3. bevel bearing, 4- 4. Fixing bolts, 5. Tianlun, 6. Derrick, 7. Frequency detecting device, 7-1. Vibration block, 7-2. Acceleration sensor, 7-3. Clamping spring, 7-4. Clamping wheel, 7-5 translation wheel, 8. manhole cover platform, 9. signal processor, 10. winch.

detailed description

An embodiment of the present invention will be further described below with reference to the accompanying drawings:

The on-line detecting device for constructing a vertical shaft and a rope tension of the present invention comprises a signal processor 9, a manhole cover platform 8, a derrick 6 disposed above the manhole cover platform 8, and a plurality of sky wheels 5 spaced apart from the derrick 6. One end is fixed by the winch 10, and the other end is tilted around the sky wheel 5 and then vertically extends into a plurality of suspension ropes 2 or stable ropes 3 connected to the well 1 in the well, at the derrick at the position of each day wheel 5 6 is fixed with a tension detecting device 4, the tension detecting device 4 includes a bearing support 4-1, a pressure sensor 4-2 and a bevel bearing 4-3, and the inclined bearing 4-3 is fixed to the derrick via a fixing bolt 4-4. 6, on the inclined support 4-3, a pressure sensor 4-2 and a bearing support 4-1 provided on the rotating shaft of the balance ring 5 are fixed, and the pressure sensor 4-2 is fixed to the inclined support via the fixing bolt 4-4. On the 4-3, the bearing support 4-1 is fixed on the pressure sensor 4-2, and the inclination angle of the inclined support 4-3 is the suspension rope 2 or the steady rope 3 is inclined around the inclined section of the balance wheel 5 and the vertical section. Half of the corner. The pressure bearing 4-2 and the bearing support 4-1 disposed on the rotating shaft of the sun gear 5 are fixed on the inclined bearing 4-3, and the manhole cover platform 8 is provided with a plurality of suspension ropes 2 respectively The frequency detecting device 7 of the steady rope 3, the frequency detecting device 7 comprises two vibration blocks 7-1 symmetrically arranged on both sides of the suspension rope 2 or the steady rope 3, and an acceleration sensor 7 fixedly mounted outside a vibration block 7-1 -2, the acceleration sensor 7-2 is provided with a wireless transmitter, and the two vibration blocks 7-1 are symmetrically disposed with a plurality of clamping wheels 7-4 which are closely attached to the suspension rope 2 or the stable rope 3, two The inner and lower portions of the vibration block 7-1 are provided with a clamping spring 7-3, and the bottoms of the two vibration blocks 7-1 are respectively provided with a translational wheel 7-5 which is movable in the track of the manhole cover platform 8. The frequency detecting means 7 transmits to the signal processor 9 by means of a wireless signal, which is processed and calculated by the signal processor 9.

The on-line detecting method of the construction shaft suspension rope and the steady rope tension using the above device, the tension T of the suspension rope 2 or the steady rope 3 is detected in real time by the pressure sensor 4-2, and the suspension rope is periodically checked by the frequency detecting device 7. 2 or the tension T of the steady rope 3 is detected, and the obtained test result is used to correct the measurement result of the pressure sensor 4-2, and the specific process is as follows:

a. The tension of the suspension rope 2 or the steady rope 3 is detected in real time by the pressure sensor 4-2: when the tension of the suspension rope 2 or the stability rope 3 acts on the bearing support 4-1 through the day wheel 5, The force is transmitted to the pressure fixedly connected to the bearing support 4-1 The force sensor 4-2 is configured such that the angle between the inclined section of the suspension rope 2 or the steady rope 3 and the vertical direction is α, and the tension of the suspension rope 2 or the stability rope 3 is T, which is known from the principle of force synthesis, the pressure sensor The pressure received by 4-2 perpendicular to the surface of the pressure sensor 4-2, that is, the pressure F measured by the pressure sensor 4-2 is:

The tension T of the suspension rope 2 or the steady rope 3 is obtained as follows:

b. Regularly detecting the tension of the suspension rope 2 or the steady rope 3 by the frequency detecting means 7: since the translational wheel 7-5 is caught in the track of the manhole cover platform 8, the frequency detecting means 7 can only move horizontally; the vibration block 7 -1 is fastened with a clamping wheel 7-4, the clamping spring 7-3 clamps the vibration block 7-1 on both sides of the wire rope on the wire rope, and the clamping wheel 7-4 ensures the movement of the wire rope in the vertical direction; An acceleration sensor 7-2 is disposed on the outer side of the vibration block 7-1, and the lateral vibration acceleration signal of the suspension rope 2 or the steady rope 3 is transmitted through the wireless transmitter provided on the acceleration sensor 7-2 through the acceleration sensor 7-2. To the signal processor 9, the signal is processed by the signal processor 9 to obtain the frequency ω of the lateral vibration of the suspension rope 2 or the steady rope 3, and then according to the length l of the suspension rope 2 or the steady rope 3, and the density of the rope ρ, by the formula:

Calculate the tension T of the wire rope;

c. Comparing the tension value measured by the pressure sensor 4-2 with the tension value measured by the frequency detecting device 7, when the difference between the two results is greater than 20%, it is judged that the pressure sensor 4-2 is malfunctioning, and the pressure is required. Sensor 4-2 is calibrated or replaced.

Fig. 1 is a schematic view of a vertical shaft construction, which is a working condition of the tension detecting device of the present invention.

In Fig. 2, the balance wheel 5 divides the suspension rope 2 or the stability rope 3 into two sections of a sloped section and a vertical section. When manufacturing the bevel bearing 4-3, it is first necessary to know the angle α between the inclined section of the suspension rope 2 or the steady rope 3 and the vertical direction, thereby determining that the inclination angle of the inclined surface of the inclined support 4-3 is α/2. . The bevel bearing 4-3 is mounted on the derrick 6 by fixing bolts 4-4, and the bearing support 4-1 of the sun gear 5 is mounted on the inclined surface of the bevel bearing 4-3. Since the direction of the resultant force of the vertical section and the inclined section of the suspension rope 2 or the steady rope 3 is the angle bisector of the vertical section and the inclined section, the pressure measured by the pressure sensor 4-2 is the resultant force of the vertical section and the inclined section, that is, :

Then you can know the tension of the suspension rope 2 or the stability rope 3:

In Fig. 3, the translation wheel 7-5 is caught in the track of the manhole cover platform 8, so that the frequency detecting means 7 can only move horizontally. A clamping wheel 7-4 is hinged on the vibration block 7-1, and the clamping spring 7-3 clamps the vibration block 7-1 on both sides of the wire rope to the wire rope, and the clamping wheel 7-4 can ensure the wire rope is vertical Direction of movement. An acceleration sensor 7-2 is disposed on the outer side of the vibration block 7-1, and the acceleration sensor 7-2 transmits the lateral vibration acceleration signal of the suspension rope 2 or the steady rope 3 to the signal processor 9 through the wireless transmitting device, and the signal processor 9 The corresponding processing program has been prepared, and the signal can be processed according to the length l of the suspension rope 2 or the steady rope 3 and the density ρ of the wire rope during the measurement, and then according to the following formula:

The tension of the wire rope can be obtained, and periodic measurement can be used to ensure the accuracy of the pressure sensor measurement results.

Claims

An on-line detecting device for constructing a shaft suspension rope and a steady rope tension, comprising a signal processor (9), a manhole cover platform (8), a derrick (6) disposed above the manhole cover platform (8), and a spacer disposed at the derrick (6) a plurality of sky wheels (5), one end fixed by a winch (10) and the other end inclined around the sky wheel (5) and then vertically extending into the well to connect a plurality of suspension ropes connected to the hanging plate (1) in the well (2) or a stable rope (3), characterized in that a tension detecting device (4) is fixed on the derrick (6) at the position of each day wheel (5), said tension detecting device (4) Including bearing bearing (4-1), pressure sensor (4-2) and bevel bearing (4-3), the inclined bearing (4-3) is fixed on the derrick (6) via fixing bolts (4-4) a pressure sensor (4-2) and a bearing support (4-1) disposed on the rotating shaft of the balance wheel (5) are fixed on the inclined bearing (4-3), and the manhole cover platform (8) is provided There are respectively frequency detecting devices (7) for clamping a plurality of suspension ropes (2) or stable ropes (3), and the frequency detecting device (7) is transmitted to the signal processor (9) by wireless signals, and the signal processor (9) ) Processing and calculation of signals.
The construction vertical suspension rope tension detecting device according to claim 1, characterized in that: the inclined angle of the inclined surface support (4-3) is a suspension rope (2) or a steady rope (3) around the sky wheel ( 5) Half of the angle between the inclined section and the vertical section.
A construction shaft suspension rope tension detecting device according to claim 1, wherein said frequency detecting means (7) comprises two symmetrically disposed on either side of a suspension rope (2) or a stable rope (3). The vibration block (7-1), the acceleration sensor (7-2) fixedly mounted on the outside of a vibration block (7-1), the wireless sensor on the acceleration sensor (7-2), and two vibration blocks (7- 1) The inner side is symmetrically provided with a plurality of clamping wheels (7-4) which are closely attached to the suspension rope (2) or the stable rope (3), and the upper and lower sides of the two vibration blocks (7-1) are provided with cards. Tight spring (7-3), the bottom of each of the two vibration blocks (7-1) is provided with a translational wheel (7-5) that is movable in the track of the manhole cover platform (8).
An on-line detecting method for constructing a vertical shaft suspension rope and a steady rope tension using the device according to claim 1, 2, or 3, characterized in that the suspension rope (2) or the real time is used by a pressure sensor (4-2) or The tension T of the steady rope (3) is detected, and the tension T of the suspension rope (2) or the steady rope (3) is periodically detected by the frequency detecting device (7), and the obtained detection result is used to correct the pressure sensor (4- 2) The measurement results are as follows:

a. The tension of the suspension rope (2) or the stability rope (3) is detected in real time by the pressure sensor (4-2): when the tension of the suspension rope (2) or the stability rope (3) passes through the sky wheel (5) When acting on the bearing support (4-1), the force is transmitted to the pressure sensor (4-2) fixedly connected to the bearing support (4-1), and the suspension rope (2) or the steady rope (3) The angle between the inclined section and the vertical direction is α, and the tension of the suspension rope (2) or the steady rope (3) is T. It is known from the principle of force synthesis that the pressure sensor (4-2) is perpendicular to The pressure on the surface of the pressure sensor (4-2), that is, the pressure F measured by the pressure sensor (4-2) is:

The tension T of the suspension rope (2) or the stability rope (3) is obtained as follows:

b. Periodically check the tension of the suspension rope (2) or the steady rope (3) by the frequency detecting device (7): the frequency detection is performed because the translational wheel (7-5) is stuck in the track of the manhole cover platform (8) The device (7) can only move horizontally; the clamping block (7-4) is hinged on the vibration block (7-1), and the clamping spring (7-3) clamps the vibration block (7-1) on both sides of the wire rope. On the wire rope, the tensioning wheel (7-4) ensures the movement of the wire rope in the vertical direction; the outer side of the vibration block (7-1) is provided with an acceleration sensor (7-2), and the acceleration sensor (7-2) Transmitting the lateral vibration acceleration signal of the suspension rope (2) or the steady rope (3) to the signal processor (9) through the wireless transmitter provided on the acceleration sensor (7-2), via the signal processor (9) The signal is processed to obtain the frequency ω of the lateral vibration of the suspension rope (2) or the stable rope (3), and then according to the length l of the suspension rope (2) or the steady rope (3), and the density ρ of the rope, by the formula :

Calculate the tension T of the wire rope;

c. Compare the tension value measured by the pressure sensor (4-2) with the tension value measured by the frequency detecting device (7). When the difference between the two results is greater than 20%, the pressure sensor (4-2) is judged. In the event of a malfunction, the pressure sensor (4-2) needs to be calibrated or replaced.