Field dynamic balance testing method for petroleum drilling winch

Abstract

The invention discloses a petroleum drilling winch field dynamic balance test method, which comprises the following steps: mounting a roller shaft assembly on a support, connecting a motor of a winch with a roller shaft, and debugging to a working state; carrying out pre-balancing treatment on the roller; installing a vibration sensor and a rotating speed sensor and then connecting with a dynamic balancing instrument; the motor is started to drive the roller to rotate stably; measuring the rotation frequency of the roller; measuring a vibration signal, and confirming that the amplitude under the rotating frequency is the main amplitude; carrying out a dynamic balance test; performing vector merging calculation on the dynamic balance test result to obtain the final mass block weight and the installation phase of the roller balance; surveying and mapping a to-be-mounted position of the mass block and fixing the mass block; the vibration signal is measured until the amplitude at the rotation frequency is no longer the main amplitude. According to the invention, the problems of poor balance effect and huge investment of a dynamic balancing machine in the static balance test of the winch drum are solved, the dynamic balance test of the winch can be conveniently and economically realized, and the balance of the winch drum is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of oil drilling equipment, and in particular relates to an on-site dynamic balance test method for an oil drilling winch. Background Art

[0002] The winch is a key component of the oil drilling equipment - the drilling rig. It is not only responsible for the drilling rig to raise and lower the drill bit, lower the casing and make the buckle, but also responsible for controlling the drilling pressure, handling accidents, extracting the core barrel, testing the oil and other operations during the drilling process of the drill bit. At the same time, it is also responsible for the lifting and lowering of the derrick and the front and back of the drilling rig. Abnormal vibration of the winch will seriously affect the safety of drilling operations and the service life of the winch. Vibration caused by imbalance is the main cause of winch vibration. The drum is the largest rotor of the winch. The main manufacturing process is casting and assembly welding, which hides a large amount of uneven quality and imbalance factors. The current way to deal with the uneven quality of the drum is to conduct a static balance test of the drum, that is, to place the drum on the roller support through the shaft, the heavier part will go down, and then stick the mass block in the opposite direction. After repeated tests, the drum is "balanced" - the drum can be stopped at any position by turning it by hand. The problem with this method is that the static balance test method is generally used for single-plane rotors. The winch drum is a long cylindrical shape, that is, a double-plane rotor. The balancing effect of this method is limited and cannot eliminate the even imbalance. At present, dynamic balancing tests generally use professional dynamic balancing machines. It is theoretically possible to perform dynamic balancing tests on rollers on dynamic balancing machines, but there are no practical implementations. In addition, the roller is heavy, with a conventional roller weighing more than 3 tons, and the investment cost of a dedicated dynamic balancing machine is huge. Summary of the invention

[0003] The purpose of the present invention is to provide an on-site dynamic balancing test method for oil drilling winch, which solves the problems of poor balancing effect of the existing winch drum static balancing test and high investment cost of the dynamic balancing machine.

[0004] The technical scheme adopted by the present invention is: an on-site dynamic balancing test method for an oil drilling winch, comprising the following steps: step 1, installing a drum shaft assembly on a support, connecting a motor of the winch to the drum shaft, and debugging to a working state; step 2, performing pre-balancing treatment on the drum; step 3, installing a vibration sensor and a speed sensor and then connecting to a dynamic balancing instrument; step 4, starting the motor to drive the drum to rotate until the speed is stable; step 5, the speed sensor measures the rotation frequency of the drum; step 6, the vibration sensor measures the vibration signal, and confirms that the amplitude under the rotation frequency is the main amplitude; step 7, performing a dynamic balancing test; step 8, performing vector merging calculation on the dynamic balancing test results, and obtaining the weight and installation phase of the final mass block of the drum balance; step 9, mapping the position where the mass block is to be installed and fixing it; step 10, measuring the vibration signal until the amplitude under the rotation frequency is no longer the main amplitude.

[0005] The present invention is also characterized in that:

[0006] The drum shaft assembly in step 1 includes a drum, a drum shaft with two ends extending outward is coaxially arranged inside the drum, bearing seats are sleeved on the outside of both ends of the drum shaft, hubs are radially arranged on the outside of both ends of the drum, brake discs are coaxially connected to the outside of the hubs, mounting holes are evenly spaced along the circumferential direction on the brake disc corresponding to the hubs, and a rope nest is provided on the hub at one end of the drum.

[0007] The pre-balancing process in step 2 is specifically as follows: after the wire rope is wound on the drum, the rope head passes through the rope nest, the rope head is connected to the cone head and clamped on the inner side of the rope nest, and the rope clamp is clamped on the wire rope at the exit of the rope nest.

[0008] In step 3, two vibration sensors are provided and installed on two bearing seats respectively.

[0009] The speed sensor in step 3 is installed on the support, and a fluorescent strip is pasted on the rotating part of the drum shaft assembly facing the speed sensor.

[0010] Step 7 specifically includes the following steps:

[0011] Step 7.1, the vibration sensor collects initial vibration data;

[0012] Step 7.2, stop the motor, fix the mass block at the brake disc mounting hole on the wheel hub at one end of the drum, and input the weight and phase value of the mass block into the dynamic balancing instrument;

[0013] Step 7.3, start the motor, reach the test speed and run smoothly, and the vibration sensor collects vibration data;

[0014] Step 7.4, stop the motor, fix the mass block at the brake disc mounting hole on the wheel hub at the other end of the drum, and input the weight and phase value of the mass block into the dynamic balancing instrument;

[0015] Step 7.5, start the motor, reach the test speed and run smoothly, and the vibration sensor collects vibration data;

[0016] Step 7.6, the dynamic balancer gives the mass block weight and phase; the motor stops, and the mass block is fixed on the wheel hub according to the mass block weight and phase given by the dynamic balancer;

[0017] Step 7.7, start the motor, reach the test speed and run smoothly, and the vibration sensor collects vibration data;

[0018] Step 7.8: The dynamic balancing instrument gives the mass block weight and phase. If the mass block weight is less than the test set value, the dynamic balancing test ends; otherwise, repeat steps 7.6 to 7.8.

[0019] The beneficial effects of the present invention are as follows: the on-site dynamic balancing test method for oil drilling winch of the present invention solves the problems of poor balancing effect of static balancing test of winch drum and huge investment in dynamic balancing machine, can conveniently and economically realize dynamic balancing test of winch, and improves the balance of winch drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the dynamic balancing test state of the roller shaft assembly;

[0021] Figure 2 It is a structural schematic diagram of the drum shaft assembly;

[0022] Figure 3 for Figure 2 Right side view showing only the hub;

[0023] Figure 4 It is a schematic diagram of the structure of the tooling rope head.

[0024] In the figure, 1. bearing seat, 2. brake disc, 3. drum, 31. wheel hub, 32. rope nest, 4. drum shaft, 5. drum shaft assembly, 6. motor, 7. coupling, 8. winch base, 9. rope head, 10. rope clamp, 11. wire rope, 12. cone head. DETAILED DESCRIPTION

[0025] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] The present invention provides a method for testing the dynamic balance of a petroleum drilling winch on site. Figures 1 to 3 As shown, the following steps are included:

[0028] Step 1: Install the drum shaft assembly 5 on the support, connect the motor 6 of the winch to the drum shaft 4, and debug it to the working state;

[0029] Step 2, pre-balancing the drum 3 of the drum shaft assembly 5;

[0030] Step 3: Install the vibration sensor and speed sensor and then connect them to the dynamic balancing instrument;

[0031] Step 4, start the motor 6 to drive the drum 3 to rotate until the speed is stable;

[0032] Step 5: The speed sensor measures the rotational frequency of the drum 3;

[0033] Step 6: The vibration sensor measures the vibration signal and confirms that the amplitude under the rotation frequency is the main amplitude;

[0034] Step 7: Perform a dynamic balance test;

[0035] Step 8: Perform vector merging calculation on the dynamic balancing test results to obtain the final mass block weight and installation phase of the drum 3;

[0036] Step 9: Measure and map the location where the mass block will be installed and fix it;

[0037] Step 10: Measure the vibration signal until the amplitude at the rotation frequency is no longer the main amplitude.

[0038] Through the above-mentioned method, the on-site dynamic balance test method of the oil drilling winch of the present invention can conveniently and economically realize the dynamic balance test of the winch, and improve the balance of the winch drum. The specific features are:

[0039] 1. Through the pre-balancing treatment of the drum 3, the winch can be tested for dynamic balance in a non-working state, which improves the safety and feasibility of the test. Because the rotor drum 3 is theoretically a balanced body in the ideal state of normal operation after winding the rope and installing the rope clamp 10. During the winch factory test before winding the rope and the drilling rig joint adjustment test, the drum 3 is an unbalanced body because there is no rope winding and rope clamp 10 installed. Therefore, before the dynamic balancing test, the drum 3 is pre-balanced, and the tooling is designed to match the weight of the rope clamp 10 and the rope head 9 to the drum 3 as much as possible according to the actual situation to simulate the normal working state.

[0040] 2. The mass block is fixed at the mounting hole of the brake disc 2 on the wheel hub 31 of the drum 3, which is convenient for installation and removal of the mass block without affecting the drum 3 product.

[0041] 3. The phase of the mass block is measured by using the evenly distributed mounting holes of the brake disc 2 on the wheel hub 31. This method is simple and accurate.

[0042] 4. The effect of the dynamic balancing test was verified through vibration tests before and after the dynamic balancing test.

[0043] Example 2

[0044] like Figure 2 As shown, the drum shaft assembly 5 used in the present invention includes a drum 3, a drum shaft 4 with two ends extending outward is coaxially arranged inside the drum 3, bearing seats 1 are sleeved on the outside of the two ends of the drum shaft 4, hubs 31 are radially arranged on the outside of the two ends of the drum 3, brake discs 2 are coaxially connected to the outside of the hubs 31, mounting holes are uniformly spaced along the circumferential direction on the brake disc 2 corresponding to the hubs 31, and a rope nest 32 is opened on the hub 31 at one end of the drum 3. The drum shaft assembly 5 is assembled or the winch is assembled, and the drum 3 is driven to operate by the winch motor 6, which is convenient for factory implementation and has low investment cost; at the same time, the drum shaft assembly 5 is assembled or the winch is assembled, which is closer to the actual working state.

[0045] like Figure 3 and Figure 4As shown, the tool rope head 9 is composed of a steel wire rope 11 and a cone head 12. By utilizing the flexibility of the steel wire rope 11, while being fixed to the drum 3, the adaptability of the rope head 9 and the rope socket 32 ​​is improved.

[0046] Example 3

[0047] The present invention provides an on-site dynamic balance test method for a petroleum drilling winch, and the specific implementation steps are as follows:

[0048] Step 1: The drum shaft assembly 5 is installed on the tooling support or the winch base 8, the winch motor 6 is connected to the drum shaft 4 of the drum shaft assembly 5 through the coupling 7, and the winch motor 6 is connected to the winch electronic control system. Alternatively, when the winch is assembled, the guard and the brake caliper assembly are not installed. Debug to normal operation.

[0049] Step 2, the tooling rope head 9 passes through the rope hole 32 of the drum 3, the cone head 12 is clamped on the inner side of the rope hole 32, and the rope clamp 10 is clamped on the wire rope 11 at the exit of the rope hole 32.

[0050] Step 3, two vibration sensors are respectively installed in the horizontal direction of the outer shell of the bearing seat 1 on both sides of the drum 3. A fluorescent strip is pasted on the rotating part of the drum shaft assembly 5, and the speed sensor is installed on the tooling support or winch base 8, aligning the fluorescent strip. The vibration sensor and the speed sensor are connected to the portable dynamic balancing instrument with a communication cable.

[0051] Step 4, start the motor 6, and wait until the drum 3 reaches the test speed and runs smoothly.

[0052] Step 5, the speed sensor measures the rotational frequency of the drum 3;

[0053] Step 6, use the vibration test function of the portable dynamic balancing instrument to measure the vibration signal of the bearing seat 1 obtained by the vibration sensor, and confirm that the amplitude under the rotation frequency is the main vibration amplitude. Since the measured vibration signal is a comprehensive vibration signal, including vibration information caused by various factors such as imbalance and misalignment, if the amplitude under the rotation frequency is not the main amplitude, the vibration cause of the main amplitude should be found and eliminated. Otherwise, the dynamic balancing test cannot be performed.

[0054] Step 7, use the dynamic balance test function of the portable dynamic balancer to perform a dynamic balance test, the mass block is fixed at the brake disc 2 mounting hole on the wheel hub 31 of the drum 3, and the mass block phase is measured using the brake disc 2 mounting holes evenly distributed around the wheel hub 31. Specifically include:

[0055] Step 7.1, collect initial vibration data.

[0056] Step 7.2, stop the vehicle, fix a mass block at the mounting hole of the brake disc 2 on the wheel hub 31 at one end of the drum 3, and input the weight and phase value of the mass block into the portable dynamic balancing instrument.

[0057] Step 7.3, start the motor 6, reach the test speed and run smoothly, and collect vibration data.

[0058] Step 7.4, stop the vehicle, and fix a mass block at the mounting hole of the brake disc 2 on the wheel hub 31 at the other end of the drum 3, and input the weight and phase value of the mass block into the portable dynamic balancing instrument.

[0059] Step 7.5, start the motor 6, reach the test speed and run smoothly, and collect vibration data.

[0060] Step 7.6, the portable dynamic balancer gives the weight and phase of the balancing mass block. The vehicle is stopped and the mass block is fixed on the winch hub 31 accordingly.

[0061] Step 7.7, start the motor 6, reach the test speed and run smoothly, and collect vibration data.

[0062] Step 7.8: The portable dynamic balancing instrument gives the weight and phase of the balancing mass block. If the mass block weight is less than the value required by the test, the dynamic balancing test ends; otherwise, repeat steps 7.6, 7.7, and 7.8.

[0063] Step 8, since multiple sets of mass blocks may be fixed on the winch hub 31 after the dynamic balancing test in step 7, it is necessary to perform vector merging calculation on the results of the dynamic balancing test, merge the weights and phases of the multiple sets of mass blocks, and obtain the weight and installation phase of the final set of mass blocks required for balancing the drum 3.

[0064] Step 9, calculate and map the actual position where the mass block will be installed on the end surface of the drum 3 by the chord length method, and fix it.

[0065] Step 10, measure the vibration signal of the bearing seat 1, and confirm that the amplitude under the rotation frequency is no longer the main vibration amplitude. Otherwise, perform the dynamic balancing test again.

Claims

1. The on-site dynamic balance test method for oil drilling winch is characterized by: The following steps are involved: Step 1, install the drum shaft assembly (5) on the support, connect the motor (6) of the winch to the drum shaft (4), and debug it to a working state; step 2, pre-balance the drum (3); step 3, install the vibration sensor and the speed sensor and then connect it to the dynamic balancing instrument; step 4, start the motor (6) to drive the drum (3) to rotate until the speed is stable; step 5, the speed sensor measures the rotation frequency of the drum (3); step 6, the vibration sensor measures the vibration signal and confirms that the amplitude under the rotation frequency is the main amplitude; step 7, perform a dynamic balancing test; step 8, perform vector merging calculation on the dynamic balancing test results to obtain the weight and installation phase of the final mass block of the drum (3); step 9, map the position where the mass block is to be installed and fix it; step 10, measure the vibration signal until the amplitude under the rotation frequency is no longer the main amplitude.

2. The on-site dynamic balance test method for oil drilling winch according to claim 1, characterized in that: The drum shaft assembly (5) in step 1 comprises a drum (3), a drum shaft (4) is coaxially arranged inside the drum (3) and its two ends extend outward, bearing seats (1) are sleeved on the outside of both ends of the drum shaft (4), hubs (31) are radially arranged outside both ends of the drum (3), a brake disc (2) is coaxially connected to the outside of the hub (31), mounting holes are evenly spaced along the circumferential direction on the brake disc (2) corresponding to the hub (31), and a rope nest (32) is provided on the hub (31) at one end of the drum (3).

3. The on-site dynamic balance test method for oil drilling winch according to claim 2, characterized in that: The pre-balancing process in step 2 is specifically as follows: after the steel wire rope (11) is wound on the drum (3), the rope head (9) passes through the rope hole (32), the rope head (9) is connected to the cone head (12) and clamped inside the rope hole (32), and the rope clamp (10) is clamped on the steel wire rope (11) at the exit of the rope hole (32).

4. The on-site dynamic balance test method for oil drilling winch according to claim 2, characterized in that: In step 3, two vibration sensors are provided and are respectively mounted on two bearing seats (1).

5. The on-site dynamic balance test method for oil drilling winch according to claim 2, characterized in that: The speed sensor in step 3 is mounted on a support, and a fluorescent strip is pasted on the rotating part of the drum shaft assembly (5) facing the speed sensor.

6. The on-site dynamic balance test method for oil drilling winch according to claim 2, characterized in that: The step 7 specifically includes the following steps: Step 7.1, the vibration sensor collects initial vibration data; Step 7.2, the motor (6) stops, and a mass block is fixed at the mounting hole of the brake disc (2) on the wheel hub (31) at one end of the drum (3), and the weight and phase value of the mass block are input into the dynamic balancing instrument; Step 7.3, start the motor (6), reach the test speed and run smoothly, and the vibration sensor collects vibration data; Step 7.4, the motor (6) stops, and a mass block is fixed at the mounting hole of the brake disc (2) on the wheel hub (31) at the other end of the drum (3), and the weight and phase value of the mass block are input into the dynamic balancing instrument; Step 7.5, start the motor (6), reach the test speed and run smoothly, and the vibration sensor collects vibration data; Step 7.6, the dynamic balancing instrument gives the mass block weight and phase; the motor (6) stops, and the mass block is fixed on the wheel hub (31) according to the mass block weight and phase given by the dynamic balancing instrument; Step 7.7, start the motor (6), reach the test speed and run smoothly, and the vibration sensor collects vibration data; Step 7.8: The dynamic balancing instrument gives the mass block weight and phase. If the mass block weight is less than the test set value, the dynamic balancing test ends; otherwise, repeat steps 7.6 to 7.8.

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