A swirl excitation pumping device for tough cement slurry

Abstract

The present invention relates to the field of underground coal processing technology, and in particular to a swirl excitation pumping device for tough cement slurry, including a delivery pump, a rotating disc vibrator, a visual sensor and a main controller. The present invention significantly improves the fluidity and uniformity of tough cement slurry by accurately controlling the pumping speed and pressure of the delivery pump and the exciting force of the rotating disc vibrator, thereby reducing maintenance costs and improving pumping efficiency. The delivery pump ensures that the cement slurry is delivered at an appropriate speed and pressure according to preset parameters, and the rotating disc vibrator generates vibrations at the corners of the pipeline to reduce cracks and falling off caused by wall hanging. The visual sensor provides key real-time monitoring data, and the main controller compares these data with preset standards to intelligently make adjustment decisions, effectively solving the problem of uneven pumped cement slurry caused by poor fluidity of cement slurry in the pipeline due to inaccurate pumping efficiency and pressure control.

Description

Technical Field

[0001] The invention relates to the technical field of underground coal processing, and in particular to a swirl excitation pumping device for tough cement slurry. Background Art

[0002] With the continuous deepening of coalbed methane and coal resource mining, underground coal mine cementing operations are facing increasingly complex geological conditions and higher safety and environmental protection requirements. The pumping devices of the existing technology have shown obvious limitations in this process, such as poor adaptability, which makes it impossible to effectively cope with the changing underground environment, low level of automation increases the possibility of human operation errors, insufficient crack control makes it difficult to ensure the long-term stability of cementing, poor balance between strength and toughness of cement slurry affects the cementing quality, and high maintenance costs. Due to the high damage rate of equipment in harsh environments, safety issues are particularly prominent. There are major risks in flammable and explosive coal mine environments, unstable construction quality makes cementing effects difficult to predict, insufficient environmental protection performance may cause pollution to the surrounding environment, and high energy consumption does not conform to the current trend of energy conservation and emission reduction. The existence of these problems seriously restricts the efficiency and safety of underground coal mine cementing operations. There is an urgent need for a new type of pumping device to overcome these shortcomings and improve the overall performance of cementing operations.

[0003] Existing pumping devices cannot achieve precise flow and pressure control, which is particularly critical in cementing operations that require precise proportioning and delivery of high-viscosity cement slurry. Imprecise pumping leads to uneven distribution of cement slurry underground, affecting the cementing effect. When equipment needs to be moved quickly to adapt to different operating environments or in underground environments with limited space, existing pumping devices are difficult to relocate and adjust quickly due to their large size and heavy weight, affecting operating efficiency. When faced with complex and changeable geological conditions, such as high-permeability formations, fracture development areas, or rocks of different hardness, existing pumping devices cannot effectively adapt and it is difficult to achieve uniform cementing. Summary of the invention

[0004] To this end, the present invention provides a swirl excitation pumping device for tough cement slurry, which is used to overcome the problem in the prior art that the cement slurry is not uniformly pumped due to poor fluidity in the pipeline caused by inaccurate pumping efficiency and pressure control.

[0005] To achieve the above object, the present invention provides a swirl excitation pumping device for tough cement slurry, comprising:

[0006] A delivery pump, used to extract the tough cement slurry from the mixing tank according to a preset pumping speed and a preset pumping pressure and deliver it to the pipeline for pumping at a preset pipeline inclination angle;

[0007] A rotating disc vibrator is used to generate the exciting force according to the preset rotation speed during the pumping process;

[0008] Visual sensors are used to monitor the real-time area of ​​cement slurry hanging on the wall and the real-time crack area at the monitoring point in the pipeline;

[0009] A main controller is used to make a determination based on the real-time area and a preset standard wall hanging area range, and to increase or decrease the pumping speed or adjust the rotation speed according to the determination result;

[0010] The main controller is also used to make a judgment according to the real-time area after a preset monitoring time, the real-time crack area, the preset standard crack area and the standard falling speed after increasing and adjusting the pumping speed, and to correct the adjusted pumping speed according to the judgment result, or adjust the pipeline inclination angle, or adjust the pumping pressure;

[0011] The main controller is also used to correct the standard crack area according to the real-time area after a preset correction time and the standard falling speed after adjusting the pipeline inclination angle.

[0012] Further, the main controller calculates the difference between the real-time area and the maximum value of the standard wall-hanging area range when the real-time area is greater than the maximum value of the preset standard wall-hanging area range;

[0013] When the difference between the real-time area and the maximum value of the standard wall-hanging area range is greater than the preset standard area difference, the main controller increases and adjusts the pumping speed according to the difference between the real-time area and the maximum value of the standard wall-hanging area range, the standard area difference and the preset pumping speed coefficient.

[0014] Furthermore, when the real-time area is greater than the maximum value of the preset standard wall-hanging area range, and the difference between the real-time area and the maximum value of the standard wall-hanging area range is less than the preset standard area difference, the main controller increases and adjusts the rotation speed according to the difference between the real-time area and the maximum value of the standard wall-hanging area range, the standard area difference and the preset rotation speed coefficient.

[0015] Furthermore, when the real-time area is smaller than the minimum value of the preset standard wall-hanging area range, the main controller calculates the difference between the minimum value of the standard wall-hanging area range and the real-time area;

[0016] When the difference between the minimum value of the standard wall hanging area range and the real-time area is greater than a preset standard area difference, the main controller reduces and adjusts the pumping speed according to the difference between the minimum value of the standard wall hanging area range and the real-time area, the standard area difference and a preset pumping speed coefficient.

[0017] Furthermore, when the real-time area is smaller than the minimum value of the preset standard wall-hanging area range, and the difference between the minimum value of the standard wall-hanging area range and the real-time area is smaller than the preset standard area difference, the main controller reduces and adjusts the rotation speed according to the difference between the minimum value of the standard wall-hanging area range and the real-time area, the standard area difference and the preset rotation speed coefficient.

[0018] Furthermore, after increasing and adjusting the pumping speed, the main controller calculates the speed of change of the real-time area according to the real-time area after the pumping speed is increased and adjusted, the real-time area after the monitoring time, and the monitoring time.

[0019] Furthermore, when the real-time crack area is less than or equal to the standard crack area, and the change rate of the real-time area calculated after the monitoring period is greater than the standard falling-off speed, the main controller reduces the corrected pumping speed according to the change rate of the real-time area calculated after the monitoring period, the standard falling-off speed and the preset speed correction coefficient.

[0020] Furthermore, when the real-time crack area is larger than the standard crack area and the change rate of the real-time area calculated after the monitoring period is less than or equal to the standard falling-off rate, the main controller reduces and adjusts the pumping pressure according to the real-time crack area, the standard crack area and the preset pressure coefficient.

[0021] Furthermore, when the real-time crack area is less than or equal to the standard crack area, and the change rate of the real-time area calculated after the monitoring period is less than or equal to the standard falling speed, the main controller increases and adjusts the pipeline inclination angle according to the change rate of the real-time area calculated after the monitoring period, the standard falling speed and the preset angle coefficient.

[0022] Furthermore, after adjusting the inclination angle of the pipeline, the main controller calculates the change rate of the real-time area after the preset correction time according to the real-time area increased by the adjusted inclination angle of the pipeline, the real-time area after the preset correction time, and the correction time, and corrects the standard crack area according to the calculation result, the standard falling-off speed and the preset crack area correction coefficient.

[0023] Compared with the prior art, the beneficial effect of the present invention lies in that, by precisely controlling the pumping speed and pressure of the delivery pump and the exciting force of the rotating disc vibrator, the fluidity and uniformity of the tough cement slurry are significantly improved, and the wall hanging phenomenon is reduced, thereby reducing maintenance costs and improving pumping efficiency. The delivery pump ensures that the cement slurry is delivered at an appropriate speed and pressure according to preset parameters, and the rotating disc vibrator generates vibrations at the corners of the pipeline, effectively preventing the wall hanging phenomenon, promoting the smooth flow of the cement slurry, and reducing cracks and falling off problems caused by wall hanging. The visual sensor provides key real-time monitoring data, and the main controller compares these data with preset standards and intelligently makes adjustment decisions, such as adjusting the pumping speed, the rotation speed of the vibrator, and even the pipeline inclination angle and the pumping pressure to adapt to the actual flow state of the cement slurry, effectively solving the problem of uneven pumping of cement slurry caused by poor fluidity of the cement slurry in the pipeline due to inaccurate pumping efficiency and pressure control.

[0024] Furthermore, by adjusting the pumping speed, it is possible to respond to the abnormal increase in the wall area in a timely manner, and to effectively reduce the wall phenomenon by accurately adjusting the pumping speed. The pumping speed directly affects the flow characteristics of cement slurry in the pipeline, including flow velocity and flow rate. It is possible to more directly control the delivery efficiency and flow state of cement slurry. Increasing the pumping speed can increase the shear force of the fluid, reduce the wall adhesion and deposition of cement slurry on the inner wall of the pipeline, thereby reducing maintenance costs and improving delivery efficiency.

[0025] Furthermore, by intelligently adjusting the rotation speed rather than the pumping speed, the system is able to more finely control the cement slurry delivery process, using vibration force to act directly on the wall area to help loosen and remove the cement slurry hanging on the wall without excessively increasing the flow rate of the cement slurry in the pipeline, thereby avoiding possible wear on the pipeline or adverse effects on the performance of the cement slurry due to excessive flow rate. In addition, it also helps to maintain the uniformity and stability of the cement slurry.

[0026] Furthermore, the intelligent control strategy based on real-time monitoring data ensures the stability and uniformity of cement slurry during pumping. By fine-tuning the pumping speed, pressure and pipeline inclination angle, the system can effectively control the formation of wall hanging and cracks, and reduce the shedding and waste of materials. It not only improves the safety and reliability of construction, but also optimizes the construction efficiency and quality. In addition, by reducing unnecessary high-speed pumping and pressure changes, the system helps to reduce energy consumption and reduce wear on equipment.

[0027] Furthermore, the dynamic correction method based on real-time data and preset standards enables the pumping system to adaptively optimize crack control. By accurately calculating and adjusting the standard crack area, the system can more effectively manage the crack problems of cement slurry and reduce construction quality problems caused by excessive cracks. It not only improves the reliability and safety of cementing operations, but also helps to reduce material waste and improve construction efficiency. In addition, through dynamic adjustment, the system can better adapt to different construction conditions and changes in cement slurry properties, and achieve more refined and economical construction operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the swirl excitation pumping device of the tough cement slurry of this embodiment;

[0029] Figure 2 This is a decision logic diagram for adjusting the pumping speed by the main controller of this embodiment;

[0030] Figure 3 This is a decision logic diagram for adjusting the rotation speed of the main controller in this embodiment;

[0031] Figure 4 This is the decision logic diagram of the pumping speed after correction and adjustment by the main controller of this embodiment. DETAILED DESCRIPTION

[0032] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0034] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0035] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] See also Figure 1 As shown, it is a schematic diagram of the swirl excitation pumping device of the tough cement slurry of this embodiment;

[0037] This embodiment provides a swirl excitation pumping device for tough cement slurry, comprising:

[0038] A delivery pump 1, used to extract the tough cement slurry from the mixing tank according to a preset pumping speed and a preset pumping pressure and deliver it to the pipeline for pumping at a preset pipeline inclination angle;

[0039] A rotating disc vibrator 2, which is arranged at the rear pipeline of the delivery pump 1, and is used to generate an exciting force according to a preset rotation speed during the pumping process;

[0040] Visual sensor 3, used to monitor the real-time area of ​​cement slurry hanging on the wall and the real-time crack area at the monitoring point at the corner of the pipeline;

[0041] Angle adjuster 4, used to adjust the pipeline inclination angle;

[0042] The main controller 5 is connected to the angle adjuster 4, the delivery pump 1, the rotating disc vibrator 2 and the visual sensor 3 respectively, and is used to make a judgment based on the real-time area and the preset standard wall hanging area range, and increase or decrease the pumping speed or adjust the rotation speed according to the judgment result;

[0043] The main controller 5 is also used to make a judgment according to the real-time area after a preset monitoring time, the real-time crack area, the preset standard crack area and the standard falling speed after increasing and adjusting the pumping speed, and to correct the adjusted pumping speed according to the judgment result, or adjust the pipeline inclination angle, or adjust the pumping pressure;

[0044] The main controller 5 is also used to correct the standard crack area according to the real-time area after a preset correction time and the standard falling speed after adjusting the pipeline inclination angle.

[0045] The swirl excitation pumping device for tough cement slurry extracts cement slurry from the mixing tank at a preset speed and pressure through the delivery pump 1, and delivers it to the pipeline at a specific inclination angle. At the corner of the pipeline, the rotating disc vibrator 2 generates vibration force according to the preset rotation speed to help prevent wall hanging and promote fluid flow. The visual sensor 3 at the corner of the pipeline monitors the area of ​​wall hanging cement slurry and the crack area in real time, and transmits the data to the main controller 5. The main controller 5 automatically adjusts the pumping speed or the rotation speed of the vibrator based on the comparison of real-time data with the preset standard. After the pumping speed is adjusted, the main controller 5 continues to monitor and correct the pumping speed, adjust the pipeline inclination angle or pumping pressure as needed to optimize the delivery performance of the cement slurry. After adjusting the inclination angle, the main controller 5 corrects the standard crack area according to the new monitoring data to ensure the stability and delivery efficiency of the cement slurry.

[0046] By precisely controlling the pumping speed and pressure of the delivery pump 1 and the exciting force of the rotating disc vibrator 2, the fluidity and uniformity of the tough cement slurry are significantly improved, the wall hanging phenomenon is reduced, thereby reducing maintenance costs and improving pumping efficiency. The delivery pump 1 ensures that the cement slurry is delivered at an appropriate speed and pressure according to the preset parameters, and the rotating disc vibrator 2 generates vibrations at the corners of the pipeline, effectively preventing the wall hanging phenomenon, promoting the smooth flow of the cement slurry, and reducing the cracks and falling problems caused by the wall hanging. The visual sensor 3 provides key real-time monitoring data, and the main controller 5 compares these data with the preset standards and intelligently makes adjustment decisions, such as adjusting the pumping speed, the rotation speed of the vibrator, and even the pipeline inclination angle and the pumping pressure to adapt to the actual flow state of the cement slurry, effectively solving the problem of uneven pumping of cement slurry caused by poor fluidity of the cement slurry in the pipeline due to inaccurate pumping efficiency and pressure control.

[0047] The preset pumping speed is the flow speed of the cement slurry in the pipeline, which depends on the rheological properties of the cement slurry, the pipeline diameter, and the conveying distance. It is usually set at 1-3 m / s. In this embodiment, it is set to 2 m / s, which can ensure the continuous flow of the cement slurry, reduce wall adhesion and deposition, and at the same time not excessively increase the energy consumption of the pump.

[0048] The preset pumping pressure is the pressure provided by the pumping system to overcome the resistance during the transportation process. It depends on the length of the pipeline, the number of elbows, and the viscosity of the cement slurry. It is usually set at 2-5 MPa. In this embodiment: it is set to 3.5 MPa, which can ensure that the cement slurry can be effectively transported to the well while avoiding damage to the pipeline and equipment due to excessive pressure.

[0049] The preset pipeline inclination angle is the inclination angle of the pipeline relative to the horizontal plane, which depends on the pipeline layout, fluid dynamics and terrain conditions. It is usually set at 5-15 degrees. In this embodiment, it is set to 10 degrees, which helps to use gravity to assist in reducing wall hanging and avoid flow instability caused by excessive angles.

[0050] The preset rotation speed is the rotation speed of the rotating disk vibrator 2, which depends on the required vibration intensity and the design of the vibrator, and is usually set at 100-300 revolutions per minute (RPM). In this embodiment, it is set to 200 RPM, which can generate sufficient vibration force to prevent wall hanging and avoid damage to the cement slurry structure.

[0051] The preset standard wall hanging area range is the maximum percentage of wall hanging area allowed, which depends on the size of the pipeline and the allowed wall hanging degree, and is usually set at 10-20% of the pipeline cross-sectional area, and is set to 15% in this embodiment. This ensures that the wall hanging problem can be discovered and handled in a timely manner without increasing excessive maintenance costs.

[0052] The preset monitoring time is the time interval for re-evaluating the effect after adjusting the pumping parameters. It depends on the reaction time of the cement slurry and the pumping speed. It is usually set at 5-15 minutes. In this embodiment, it is set to 10 minutes, allowing the system to have enough time to respond to the adjustment without being too long so that problems cannot be discovered in time.

[0053] The preset standard crack area is the maximum allowable crack area percentage, which depends on the requirements for cementing quality and the importance of crack control. It is usually set at 5-10% of the pipe cross-sectional area. In this embodiment, it is set to 7%, ensuring that a certain degree of cracks are allowed to exist without sacrificing cementing quality, thereby reducing unnecessary over-adjustment.

[0054] The preset correction time is the time interval for evaluating the effect of adjusting the pipeline inclination angle, which depends on the system response time and the construction progress. It is usually set at 30-60 minutes. In this embodiment, it is set to 45 minutes, allowing the effect of the inclination angle adjustment to be fully evaluated while maintaining the continuity of the construction progress.

[0055] Please continue reading Figure 2 As shown, it is a decision logic diagram of the main controller 5 adjusting the pumping speed in this embodiment;

[0056] Specifically, when the real-time area is greater than the maximum value of the preset standard wall-hanging area range, the main controller 5 calculates the difference between the real-time area and the maximum value of the standard wall-hanging area range;

[0057] When the difference between the real-time area and the maximum value of the standard wall-hanging area range is greater than the preset standard area difference, the main controller 5 increases and adjusts the pumping speed according to the difference between the real-time area and the maximum value of the standard wall-hanging area range, the standard area difference and the preset pumping speed coefficient.

[0058] In the swirl excitation pumping device for tough cement slurry, the main controller 5 continuously monitors the data provided by the visual sensor 3, especially the real-time area of ​​the cement slurry hanging on the wall at the corner of the pipeline. When the real-time area exceeds the maximum value of the preset standard hanging area range, the main controller 5 calculates the difference between the exceeded area and the standard maximum value. If this difference exceeds the preset standard area difference, the main controller 5 will automatically adjust the pumping speed of the delivery pump 1 according to this area difference, the standard area difference and the preset speed coefficient, in order to reduce the hanging area and restore it to the normal operating range.

[0059] By adjusting the pumping speed, it is possible to respond to abnormal increases in the wall area in a timely manner, and to effectively reduce the wall phenomenon by accurately adjusting the pumping speed. The pumping speed directly affects the flow characteristics of cement slurry in the pipeline, including flow velocity and flow rate. It is possible to more directly control the delivery efficiency and flow state of cement slurry. Increasing the pumping speed can increase the shear force of the fluid, reduce the wall adhesion and deposition of cement slurry on the inner wall of the pipeline, thereby reducing maintenance costs and improving delivery efficiency.

[0060] Please continue reading Figure 3 As shown, it is a decision logic diagram of the main controller 5 adjusting the rotation speed in this embodiment;

[0061] Specifically, when the real-time area is greater than the maximum value of the preset standard wall-hanging area range, and the difference between the real-time area and the maximum value of the standard wall-hanging area range is less than the preset standard area difference, the main controller 5 increases and adjusts the rotation speed according to the difference between the real-time area and the maximum value of the standard wall-hanging area range, the standard area difference and the preset rotation speed coefficient.

[0062] In the swirl excitation pumping system of tough cement slurry, when the main controller 5 detects that the real-time wall hanging area at the corner of the pipeline exceeds the maximum value of the preset standard wall hanging area range, but the difference is still within the acceptable standard area difference, the system will not simply increase the pumping speed, but choose to appropriately increase the rotation speed of the rotating disk vibrator 2 according to the difference between the real-time area and the standard maximum value, the preset standard area difference and the adjustment coefficient. This adjustment is intended to assist in reducing wall hanging by increasing the vibration force, rather than directly changing the flow characteristics of the cement slurry.

[0063] By intelligently adjusting the rotation speed rather than the pumping speed, the system is able to more finely control the cement slurry delivery process, using vibration force to act directly on the wall area to help loosen and remove the cement slurry hanging on the wall without excessively increasing the flow rate of the cement slurry in the pipe, thereby avoiding the situation where excessive flow rate may cause wear to the pipe or adversely affect the performance of the cement slurry. In addition, it also helps to maintain the uniformity and stability of the cement slurry.

[0064] The preset standard wall hanging area range is the maximum and minimum values ​​of the allowable wall hanging area. Adjustment is required if it exceeds this range, depending on the size of the pipeline, the rheological properties of the cement slurry and the construction standards. It is usually set to 10% to 20% of the pipeline cross-sectional area. In this embodiment, it is set to 20%. Setting the maximum wall hanging area to 20% can ensure that there is enough room to adjust the operation and avoid excessive wall hanging causing flow obstruction.

[0065] The preset standard area difference is the maximum allowable deviation between the real-time wall hanging area and the standard wall hanging area range, which depends on the accuracy requirements of the construction and the strictness of the wall hanging control. It is usually set to 5% to 10% of the standard wall hanging area range. In this embodiment, it is set to 8%. Setting it to 8% can provide a buffer zone. When the wall hanging area approaches the upper limit, it can be adjusted in time to maintain operational flexibility and safety.

[0066] The preset pumping speed factor is a multiplier for adjusting the pumping speed based on real-time conditions and preset standards, depending on the desired response speed and system capabilities. It is usually set to 0.5 to 1.5 times the standard pumping speed. In this embodiment, it is set to 1.2 times. Setting it to 1.2 times can quickly increase the flow rate and reduce wall hanging when an increase in wall hanging area is detected.

[0067] The rotation speed coefficient is a multiplier used to adjust the speed of the rotating disk vibrator 2 to generate the required vibration force. It depends on the required vibration intensity and the design specifications of the vibrator. It is usually set to 0.8 to 1.2 times the maximum rotation speed of the vibrator. In this embodiment, it is set to 1.1 times. It can provide additional power when stronger vibration force is needed to help loosen the wall.

[0068] Specifically, when the real-time area is smaller than the minimum value of the preset standard wall hanging area range, the main controller 5 calculates the difference between the minimum value of the standard wall hanging area range and the real-time area;

[0069] When the difference between the minimum value of the standard wall hanging area range and the real-time area is greater than the preset standard area difference, the main controller 5 reduces and adjusts the pumping speed according to the difference between the minimum value of the standard wall hanging area range and the real-time area, the standard area difference and the preset pumping speed coefficient.

[0070] Specifically, when the real-time area is smaller than the minimum value of the preset standard wall-hanging area range, and the difference between the minimum value of the standard wall-hanging area range and the real-time area is smaller than the preset standard area difference, the main controller 5 reduces and adjusts the rotation speed according to the difference between the minimum value of the standard wall-hanging area range and the real-time area, the standard area difference and the preset rotation speed coefficient.

[0071] Specifically, after increasing and adjusting the pumping speed, the main controller 5 calculates the change speed of the real-time area according to the real-time area after increasing and adjusting the pumping speed, the real-time area after the monitoring time, and the monitoring time.

[0072] Please continue reading Figure 4 As shown, it is a decision logic diagram of the pumping speed after correction and adjustment by the main controller 5 in this embodiment;

[0073] Specifically, when the real-time crack area is less than or equal to the standard crack area, and the change rate of the real-time area calculated after the monitoring period is greater than the standard falling-off speed, the main controller 5 reduces the corrected pumping speed according to the change rate of the real-time area calculated after the monitoring period, the standard falling-off speed and the preset speed correction coefficient.

[0074] Specifically, when the real-time crack area is larger than the standard crack area and the change rate of the real-time area calculated after the monitoring period is less than or equal to the standard falling rate, the main controller 5 reduces and adjusts the pumping pressure according to the real-time crack area, the standard crack area and the preset pressure coefficient.

[0075] Specifically, when the real-time crack area is less than or equal to the standard crack area, and the change rate of the real-time area calculated after the monitoring period is less than or equal to the standard falling rate, the main controller 5 increases and adjusts the pipeline inclination angle according to the change rate of the real-time area calculated after the monitoring period, the standard falling rate and the preset angle coefficient.

[0076] In the swirl excitation pumping system of tough cement slurry, the main controller 5 first makes adjustments when it detects that the pumping speed needs to be increased, and then after the preset monitoring time, further fine-tunes according to the real-time area change and the speed of change. If the real-time crack area remains within the standard range and the area change rate exceeds the standard shedding speed, the main controller 5 will reduce the pumping speed to control the speed of wall shedding. If the crack area exceeds the standard and the area change rate does not exceed the standard shedding speed, the pumping pressure is reduced to promote the healing of the cracks. On the contrary, if the crack area is within the standard range and the area change rate does not exceed the standard, the pipeline inclination angle is increased to optimize the flow and wall management of the cement slurry.

[0077] The intelligent control strategy based on real-time monitoring data ensures the stability and uniformity of cement slurry during pumping. By finely adjusting the pumping speed, pressure and pipeline inclination angle, the system can effectively control the formation of wall hanging and cracks, and reduce the shedding and waste of materials. It not only improves the safety and reliability of construction, but also optimizes the construction efficiency and quality. In addition, by reducing unnecessary high-speed pumping and pressure changes, the system helps to reduce energy consumption and reduce wear on equipment.

[0078] The standard shedding speed is the maximum shedding speed allowed for the wall-hanging cement slurry within a certain period of time. It depends on the stability of the cement slurry, the pipeline material and the construction safety standards. It is usually set to a lower speed, such as 0.1 m / s, to avoid falling off too quickly. In this embodiment, it is set to 0.05 m / s. The lower standard shedding speed helps to control the shedding of cement slurry during the construction process and reduce damage to the pipeline and the surrounding environment.

[0079] The speed correction factor is a multiplier used to adjust the pumping speed. It is based on real-time monitoring data and depends on the desired response speed and the sensitivity of the system adjustment. It is usually set to 0.8 to 1.2. In this embodiment, it is set to 0.95 to fine-tune the pumping speed and avoid instability caused by excessive adjustment.

[0080] The standard crack area is the maximum allowable crack area. Measures need to be taken if the area exceeds this value. It depends on the construction quality requirements and the importance of crack control. It is usually set to 5% to 10% of the pipe cross-sectional area. In this embodiment, it is set to 7% to ensure that timely measures are taken before the cracks begin to affect the cementing quality.

[0081] The preset pressure coefficient is a multiplier used to adjust the pumping pressure. It is based on real-time monitoring data and depends on the capacity of the pumping system and construction requirements. It is usually set to 0.9 to 1.1. In this embodiment, it is set to 1.05 to increase the pressure appropriately when needed to ensure that the cement slurry can be effectively transported while avoiding excessive pressure on the pipeline.

[0082] The angle coefficient is a multiplier used to adjust the pipeline inclination angle. It is based on real-time monitoring data and depends on the pipeline layout and fluid dynamics characteristics. It is usually set to 1.0 to 1.5. In this embodiment, it is set to 1.1. When necessary, the inclination angle can be appropriately increased to optimize the flow characteristics of the cement slurry and reduce wall hanging.

[0083] Specifically, after adjusting the inclination angle of the pipeline, the main controller 5 calculates the change rate of the real-time area after the preset correction time according to the real-time area increased by the adjusted inclination angle of the pipeline, the real-time area after the preset correction time, and the correction time, and corrects the standard crack area according to the change rate of the real-time area after the preset correction time, the standard falling-off speed and the preset crack area correction coefficient.

[0084] In the swirl excitation pumping system, after adjusting the pipeline inclination angle, the main controller 5 will measure the adjusted real-time area, and measure the real-time area again at the end of the preset correction time. These two measured values ​​are used to calculate the area change rate, that is, the rate at which the wall cement slurry falls off or decreases during the correction time. The main controller 5 compares this change rate with the preset standard shedding rate, and then combines it with the preset crack area correction coefficient to make necessary corrections to the previously set standard crack area to ensure that it can more accurately reflect the actual crack control requirements under the current pumping conditions.

[0085] The dynamic correction method based on real-time data and preset standards enables the pumping system to adaptively optimize crack control. By accurately calculating and adjusting the standard crack area, the system can more effectively manage the crack problems of cement slurry and reduce construction quality problems caused by excessive cracks. It not only improves the reliability and safety of cementing operations, but also helps to reduce material waste and improve construction efficiency. In addition, through dynamic adjustment, the system can better adapt to different construction conditions and changes in cement slurry characteristics, and achieve more refined and economical construction operations.

[0086] The crack area correction factor is a multiplier used to adjust the preset standard crack area according to real-time monitoring data to adapt to the actual flow and crack development of cement slurry. The coefficient depends on many factors, including the rheological properties of cement slurry, pipe material and diameter, the speed of crack development, and the strictness of crack control during construction. Usually, in the absence of specific engineering data support, it is set from a more conservative value, such as 0.8 to 1.2, to ensure sufficient adjustment space. In this embodiment, according to engineering requirements and historical data, setting the crack area correction factor to 0.95 means that when the crack area is close to or exceeds the standard value, the system will automatically adjust the standard crack area to reduce it by 5%. Such a setting can prevent further expansion of cracks in advance, thereby avoiding possible construction quality problems and safety hazards. For example, if the currently monitored crack area is 90% of the standard value, after using a correction factor of 0.95, the new standard crack area will be reduced to 85.5%, which will allow operators more time to take preventive measures, such as adjusting the pumping speed or pressure, without having to wait until the crack area reaches a critical point. In this embodiment, if the initial preset standard crack area is 5%, after using the correction factor of 0.95, the new standard crack area will be adjusted to 4.75%. This adjustment provides a more stringent crack control threshold, which helps to identify and respond to crack development problems in advance.

[0087] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0088] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A swirl excitation pumping device for tough cement slurry, characterized in that: include: A delivery pump, used to extract the tough cement slurry from the mixing tank according to a preset pumping speed and a preset pumping pressure and deliver it to the pipeline for pumping at a preset pipeline inclination angle; A rotating disc vibrator is used to generate the exciting force according to the preset rotation speed during the pumping process; Visual sensors are used to monitor the real-time area of ​​cement slurry hanging on the wall and the real-time crack area at the monitoring point in the pipeline; A main controller is used to make a determination based on the real-time area and a preset standard wall hanging area range, and to increase or decrease the pumping speed or adjust the rotation speed according to the determination result; The main controller is also used to make a judgment according to the real-time area after a preset monitoring time, the real-time crack area, the preset standard crack area and the standard falling speed after increasing and adjusting the pumping speed, and to correct the adjusted pumping speed according to the judgment result, or adjust the pipeline inclination angle, or adjust the pumping pressure; The main controller is also used to correct the standard crack area according to the real-time area after a preset correction time and the standard shedding speed after adjusting the pipeline inclination angle; Among them, the pumping speed is the flow speed of the cement slurry in the pipeline, the pumping pressure is the pressure provided by the pumping system, the pipeline inclination angle is the inclination angle of the pipeline relative to the horizontal plane, the rotation speed is the rotation speed of the rotating disk vibrator, the standard wall hanging area range is the maximum allowable wall hanging area percentage, the monitoring time is the time interval for re-evaluating the effect after adjusting the pumping parameters, the standard crack area is the maximum allowable crack area percentage, the standard falling off speed is the maximum falling off speed allowed for the wall hanging cement slurry within a certain period of time, and the correction time is the time interval for evaluating its effect after adjusting the pipeline inclination angle.

2. The swirl excitation pumping device for tough cement slurry according to claim 1, characterized in that: The main controller calculates the difference between the real-time area and the maximum value of the standard wall-hanging area range when the real-time area is greater than the maximum value of the preset standard wall-hanging area range; When the difference between the real-time area and the maximum value of the standard wall-hanging area range is greater than the preset standard area difference, the main controller increases and adjusts the pumping speed according to the difference between the real-time area and the maximum value of the standard wall-hanging area range, the standard area difference and the preset pumping speed coefficient.

3. The swirl excitation pumping device for tough cement slurry according to claim 2, characterized in that: The main controller increases and adjusts the rotation speed according to the difference between the real-time area and the maximum value of the standard wall-hanging area range, the standard area difference and the preset rotation speed coefficient when the real-time area is greater than the maximum value of the preset standard wall-hanging area range, and the difference between the real-time area and the maximum value of the standard wall-hanging area range is less than the preset standard area difference; The preset standard area difference is the maximum deviation allowed between the real-time wall hanging area and the standard wall hanging area range.

4. The swirl excitation pumping device for tough cement slurry according to claim 3 is characterized in that: The main controller calculates the difference between the minimum value of the standard wall hanging area range and the real-time area when the real-time area is smaller than the minimum value of the preset standard wall hanging area range; When the difference between the minimum value of the standard wall hanging area range and the real-time area is greater than a preset standard area difference, the main controller reduces and adjusts the pumping speed according to the difference between the minimum value of the standard wall hanging area range and the real-time area, the standard area difference and a preset pumping speed coefficient.

5. The swirl excitation pumping device for tough cement slurry according to claim 4, characterized in that: When the real-time area is smaller than the minimum value of the preset standard wall-hanging area range, and the difference between the minimum value of the standard wall-hanging area range and the real-time area is smaller than the preset standard area difference, the main controller reduces and adjusts the rotation speed according to the difference between the minimum value of the standard wall-hanging area range and the real-time area, the standard area difference and the preset rotation speed coefficient.

6. The swirl excitation pumping device for tough cement slurry according to claim 5, characterized in that: After increasing and adjusting the pumping speed, the main controller calculates the change speed of the real-time area according to the real-time area after the pumping speed is increased and adjusted, the real-time area after the monitoring time, and the monitoring time.

7. The swirl excitation pumping device for tough cement slurry according to claim 6, characterized in that: When the real-time crack area is less than or equal to the standard crack area, and the change speed of the real-time area calculated after the monitoring period is greater than the standard shedding speed, the main controller reduces the corrected pumping speed according to the change speed of the real-time area calculated after the monitoring period, the standard shedding speed and the preset speed correction coefficient; The speed correction factor is a multiplier used to adjust the pumping speed.

8. The swirl excitation pumping device for tough cement slurry according to claim 7, characterized in that: The main controller adjusts the pumping pressure according to the real-time crack area, the standard crack area and the preset pressure coefficient when the real-time crack area is larger than the standard crack area and the change speed of the real-time area calculated after the monitoring time is less than or equal to the standard shedding speed; The preset pressure coefficient is a multiplier used to adjust the pumping pressure.

9. The swirl excitation pumping device for tough cement slurry according to claim 8, characterized in that: When the real-time crack area is less than or equal to the standard crack area, and the change speed of the real-time area calculated after the monitoring period is less than or equal to the standard falling speed, the main controller increases and adjusts the pipeline inclination angle according to the change speed of the real-time area calculated after the monitoring period, the standard falling speed and the preset angle coefficient; The angle factor is the multiplier used to adjust the pipe inclination angle.

10. The swirl excitation pumping device for tough cement slurry according to claim 9, characterized in that: After adjusting the pipeline inclination angle, the main controller calculates the change speed of the real-time area after the preset correction time according to the real-time area of ​​the increased adjusted pipeline inclination angle, the real-time area after the preset correction time and the correction time, and corrects the standard crack area according to the calculation result, the standard shedding speed and the preset crack area correction coefficient; Among them, the crack area correction coefficient is a multiplier used to adjust the preset standard crack area according to real-time monitoring data.

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