A magnetically controlled multi-directional pressure holding controller triggering magnetic force monitoring device and monitoring method

Abstract

The application relates to a magnetic control multi-direction pressure maintaining controller trigger magnetic force monitoring device and a monitoring method. The device comprises a support platform, a valve seat holder, a horizontal guide rail, a vertical rod, a first force sensor installed on the vertical rod, a second force sensor and a third force sensor installed on the horizontal guide rail. One end of the first force sensor is connected with a trigger permanent magnet, the trigger permanent magnet is used for exerting repulsion on a valve plate permanent magnet on a valve plate to trigger the valve plate to close, one end of the second force sensor is connected with a sliding block on the vertical rod, the other end of the second force sensor is rotationally connected with the inner surface of the valve plate, the lower end of the third force sensor is connected with a sliding block on the horizontal guide rail, and the upper end of the third force sensor is rotationally connected with the inner surface of the valve plate. The application can monitor the stress conditions of the valve plate at different rotating angles respectively, is beneficial to detailed understanding of the change of the magnetic force in the whole trigger process, and is helpful to improvement of magnetic circuit design.

Description

Technical Field

[0001] This invention relates to the field of pressure-holding coring technology, and in particular to a magnetically controlled multi-directional pressure-holding controller triggering magnetic force monitoring device and monitoring method. Background Technology

[0002] Traditional pressure-holding coring devices primarily use vertical coring. Our team innovatively proposed a magnetically controlled self-triggered multi-directional pressure-holding coring technology, such as the simple magnetically triggered multi-directional pressure-holding coring device disclosed in Chinese patent document CN113958279A. The magnetically controlled self-triggered pressure-holding controller is crucial in this technology, especially when it involves magnetic self-triggering and self-sealing. During the triggering process, magnetic monitoring helps analyze the reliability of the pressure-holding controller in the complex black-box environment downhole, and through calculation, optimize the magnetic control technology. However, existing technologies mostly rely on numerical analysis, which cannot verify its accuracy and has significant errors. Therefore, it is necessary to conduct magnetic monitoring throughout the entire self-triggering and self-sealing process to provide data support for theory and optimization. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a magnetically controlled multi-directional pressure holding controller triggering magnetic force monitoring device and monitoring method.

[0004] This invention is achieved through the following technical solution:

[0005] A magnetically controlled multi-directional pressure-holding controller trigger magnetic force monitoring device includes a support platform, a valve seat holder mounted on the support platform, a horizontal guide rail mounted on the support platform, a vertical rod fixed to the bottom of the support platform, a first force sensor mounted on the vertical rod, a second force sensor mounted on another vertical rod and movable up and down along the vertical rod, and a third force sensor mounted on the horizontal guide rail and movable along the horizontal guide rail. One end of the first force sensor is connected to a trigger permanent magnet, which applies a repulsive force to a valve disc permanent magnet on the valve disc to trigger valve disc closure. One end of the second force sensor is connected to a vertical slider on the vertical rod, and the other end of the second force sensor is rotatably connected to the inner surface of the valve disc. The lower end of the third force sensor is connected to a horizontal slider on the horizontal guide rail, and the upper end of the third force sensor is rotatably connected to the inner surface of the valve disc. The second and third force sensors are retractable.

[0006] Preferably, the valve seat holder is a clamp structure.

[0007] Optionally, the support platform can rotate in the vertical plane.

[0008] Furthermore, the magnetically controlled multi-directional pressure holding controller trigger magnetic monitoring device also includes a base, a movable seat, an annular guide rail, and an annular drive mechanism. The axis of the annular guide rail is parallel to the horizontal plane. The support platform is mounted on the movable seat, which is mounted on the annular guide rail. The annular drive mechanism is connected to the movable seat to drive the movable seat to move circumferentially along the annular guide rail.

[0009] Optionally, the circumferential drive mechanism includes a stepper motor mounted on a movable base and a gear connected to the output of the stepper motor. There is a coaxial annular toothed rail on the annular guide rail, and the gear meshes with the annular toothed rail.

[0010] Optionally, the support platform is connected to the movable seat via a support rod, with one end of the support rod connected to the movable seat and the other end connected to the support platform.

[0011] Optionally, a magnetically controlled multi-directional pressure holding controller triggering magnetic force monitoring device further includes a rotary drive motor for driving the rotation. The two sides of the support platform are respectively connected to the movable seat through support rods. One end of the support rod is rotatably connected to the support platform through a rotating shaft. The axis of the rotating shaft is perpendicular to the axis of the annular guide rail. The output of the rotary drive motor is connected to the rotating shaft.

[0012] Optionally, the vertical rod corresponding to the second force sensor and the horizontal guide rail are provided with scales.

[0013] This application provides a method for triggering magnetic force monitoring using a magnetically controlled multi-directional pressure-holding controller, comprising the following steps:

[0014] First, use the valve seat holder to fix the valve seat of the pressure holding controller, and calibrate the first force sensor to a value of 0;

[0015] Then, slide the second force sensor along the pole to open the valve. At this time, the permanent magnet is triggered by the magnetic repulsion force of the driving permanent magnet. The initial force of the second sensor is calibrated to be equal to the measured value of the first force sensor, and the measured value of the third force sensor is 0.

[0016] Then, manually move the second force sensor down the pole in a fixed amount, and the third force sensor will also move along the horizontal guide rail. Record the values ​​of the second and third force sensors during the movement.

[0017] When the third force sensor is located on the valve seat axis, the position of the third force sensor on the horizontal guide rail is fixed and the third force sensor is no longer moved.

[0018] After that, the second force sensor continues to move downward along the horizontal guide rail until it can no longer move in the vertical direction. Then, the second force sensor is removed and the third force sensor continues to measure.

[0019] When the valve is closed, the measurement value of the third force sensor is the initial preload value of the pressure holding controller.

[0020] Compared with the prior art, this application has at least the following beneficial effects:

[0021] 1. This application uses a second pressure sensor and a third force sensor to monitor the force on the valve disc at different rotation angles, which helps to understand the changes in magnetic force during the entire triggering process and improve the magnetic circuit design; moreover, testing with physical objects is closer to the actual situation and helps to reduce errors.

[0022] 2. The main body of this application can rotate at any angle, which can realize the monitoring of magnetic force when taking cores from multiple directions at any angle. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional view of the main structure of the magnetic monitoring device triggered by the magnetic multi-directional pressure holding controller in the embodiment;

[0025] Figure 2 This is a cross-sectional view of the main structure in its initial state in the embodiment;

[0026] Figure 3 This is a cross-sectional view of the main mechanism during the valve disc closure process in the embodiment;

[0027] Figure 4 This is a schematic diagram of the structure of the magnetic monitoring device triggered by the magnetic control multi-directional pressure holding controller in the embodiment;

[0028] Figure 5 This is a schematic diagram of the magnetic monitoring device triggered by the magnetic control multi-directional pressure holding controller when the annular guide rail is not shown in the embodiment.

[0029] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0030] Figure 7 This is a schematic diagram of the structure of the annular guide rail and the circumferential drive mechanism in the embodiment;

[0031] Figure 8 This is a schematic diagram of the support platform and movable seat in the embodiment. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. It should also be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments; similar or identical parts between embodiments can be referred to interchangeably.

[0034] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] like Figures 1-3 As shown in the figure, the magnetic multi-directional pressure holding controller trigger magnetic force monitoring device disclosed in this embodiment includes a main body mechanism, which includes a support platform 1, a valve seat holder 2, a horizontal guide rail 3, a vertical rod 4, a trigger permanent magnet 5, a first force sensor 51, a second force sensor 61 and a third force sensor 71. The bottom of the vertical rod 4 is fixedly connected to the support platform 1, and the horizontal guide rail 3 is mounted on the support platform 1.

[0037] The pressure holding controller includes a valve seat 11 and a valve disc 12. One end of the valve disc 12 is rotatably connected to the valve seat 11, and a valve disc permanent magnet 13 is mounted on the outer surface of the valve disc 12. The valve seat holder 2 is fixed on the support platform 1 and is used to hold and fix the valve seat 11.

[0038] The first force sensor 51 is mounted on the upright 4. One end of the first force sensor 51 is connected to the upright 4, and the other end is connected to the trigger permanent magnet 5. The trigger permanent magnet 5 is used to apply a repulsive force to the valve disc permanent magnet 13 on the valve disc 12, triggering the valve disc 12 to close. The first force sensor 51 is used to measure the force between the trigger permanent magnet 5 and the valve disc permanent magnet 13.

[0039] The second force sensor 61 and the third force sensor 71 are used to detect the force exerted on the valve disc 12 during the closing process. The second force sensor 61 is mounted on another upright 4 and can move up and down along the upright 4. The second force sensor 61 is located on the opposite side from the trigger permanent magnet 5. One end of the second force sensor 61 is connected to the vertical slider on the upright 4, and the other end of the second force sensor 61 is rotatably connected to the inner surface of the valve disc 12. Of course, a locking structure is provided between the vertical slider and the upright 4 to lock the vertical slider. The locking structure can use components such as bolts, which is conventional technology in this field and will not be described in detail here.

[0040] The third force sensor 71 is mounted on the horizontal guide rail 3 and can move along the horizontal guide rail 3. The lower end of the third force sensor 71 is connected to the horizontal slider on the horizontal guide rail 3, and the upper end of the third force sensor 71 is rotatably connected to the inner surface of the valve disc 12. The upper end of the third spring rod 72 is also rotatably connected to the inner surface of the valve disc 12. Of course, a locking structure is provided between the horizontal slider and the horizontal guide rail 3, which can lock the horizontal slider. The locking structure can use bolts or other components, which is conventional technology in this field and will not be described in detail here.

[0041] The second force sensor 61 and the third force sensor 71 are stretchable force sensors, which can accurately measure the magnitude, direction, and point of application of the force. Specifically, during compression, as the external force increases, the elastic element of the sensor undergoes more significant deformation, resulting in a larger electrical signal output; conversely, when the external force decreases, the deformation also decreases accordingly, and the electrical signal output decreases. This characteristic enables the stretchable force sensor to accurately measure and reflect changes in force during compression.

[0042] In some embodiments, one end of the second force sensor 61 and the third force sensor 71 are rotatably connected to the center position of the valve disc 12.

[0043] Optionally, the valve seat holder 2 is a clamp structure that can hold valve seats 11 of pressure holding controllers of different sizes.

[0044] In some embodiments, the upright 4 corresponding to the second force sensor 61 and the horizontal guide rail 3 corresponding to the third force sensor 71 are provided with scales to facilitate quantitative adjustment of the displacement of the second force sensor 61 and the third force sensor 71. In one possible design, the support platform 1 can rotate in a vertical plane, enabling magnetic monitoring during multi-directional centering at any angle.

[0045] like Figures 4-6 As shown, in some embodiments, the magnetically controlled multi-directional pressure holding controller triggering magnetic force monitoring device further includes a base 80, a movable seat 81, an annular guide rail 82, and an annular drive mechanism. The annular guide rail 82 is mounted on the base 80, and the axis of the annular guide rail 82 is parallel to the horizontal plane.

[0046] The support platform 1 is mounted on the movable seat 81, which is mounted on the annular guide rail 82 and can move circumferentially along the annular guide rail 82. The circumferential drive mechanism is connected to the movable seat 81 to drive the movable seat 81 to move circumferentially along the annular guide rail 82.

[0047] In some embodiments, such as Figure 7 As shown, the circumferential drive mechanism includes a stepper motor 91 mounted on a movable base 81 and a gear 92 connected to the output of the stepper motor 91. There is a coaxial annular toothed rail 93 on the annular guide rail 82. The gear 92 meshes with the annular toothed rail 93. The rotation of the stepper motor 91 drives the gear 92 to rotate. The gear 92 moves along the annular toothed rail 93, which drives the support platform 1, the pressure holding controller, etc. to rotate synchronously in the vertical plane, thereby realizing the adjustment of the centering angle.

[0048] In some embodiments, such as Figure 5 As shown, the support platform 1 is connected to the movable seat 81 via a support rod 83. One end of the support rod 83 is connected to the movable seat 81, and the other end of the support rod 83 is connected to the support platform 1.

[0049] In some embodiments, both sides of the support platform 1 are connected to the movable seat 81 via support rods 83, and one end of the support rod 83 is connected to the support platform 1 via a rotating shaft. The axis of the rotating shaft is perpendicular to the axis of the annular guide rail 2. Figure 8 As shown, the output of the rotary drive motor 84 is connected to the rotary shaft. When the rotary drive motor 84 rotates, the support platform 1 can rotate around the rotary shaft, and the centering angle can also be adjusted. By cooperating with the circumferential adjustment of the annular guide rail 82 and the circumferential drive mechanism, the simulation of centering at any angle can be realized.

[0050] In this embodiment, the main body of the testing device can rotate at any angle, enabling monitoring of magnetic force during multi-directional coring at any angle. Based on force analysis, the valve disc 12 experiences only axial (z) and radial (x) triggering forces during rotation. The second force sensor 61 and the third force sensor 71 can monitor the force on the valve disc 12 at different rotation angles.

[0051] Furthermore, the effect of gravity can be tested through the arrangement of permanent magnets or theoretical calculations. For example, when measuring gravity, the trigger permanent magnet 5 is removed, leaving only the valve disc permanent magnet 13 on the valve disc 12. The rotation angle of the valve disc 12 can be monitored using a high-speed camera. This allows for a detailed understanding of the changes in magnetic force throughout the triggering process, which helps improve the magnetic circuit design.

[0052] A method for using a magnetically controlled multi-directional pressure-holding controller triggering a magnetic force monitoring device includes the following steps:

[0053] First, install the trigger permanent magnet 5 and the pressure holding controller. The first force sensor 51 corresponding to the trigger permanent magnet 5 is calibrated to have a value of 0.

[0054] Then, slide the second force sensor 61 along the upright 4 to bring the valve disc 12 to its initial open position, as shown. Figure 3 As shown; at this time, the magnetic repulsion force F experienced by the trigger permanent magnet 5 from the driving permanent magnet is... x0 The calibration is performed so that the magnitude of the force in the x-direction is consistent with the measurement value of the first force sensor 51 on the trigger permanent magnet 5, and the initial force magnitude of the second sensor 61 is equal to the measurement value of the first force sensor 51; the force in the z-axis is calibrated to be 0.

[0055] Then, manually move the second force sensor 61 down along the upright 4, and the third force sensor 71 will also move along the horizontal guide rail 3, with each displacement being 1mm. After moving to the fixed position, lock it with the locking structure. The displacement of the second force sensor 61 along the upright 4 is recorded as z, and the displacement of the third force sensor 71 along the horizontal guide rail 3 is recorded as x. For every 1mm movement of z, record a set of values ​​for the second force sensor 61 and the third force sensor 71.

[0056] When the third force sensor 71 is located at the center of the valve seat 11, the position of the third force sensor 71 on the horizontal guide rail 3 is fixed and no longer moves.

[0057] Subsequently, the second force sensor 61 continues to move downwards along the horizontal guide rail 3 until it can no longer move in the z-direction. Then, the second force sensor 61 is removed, and the third force sensor 71 continues to record the z-direction force, ultimately forming a force curve related to F. x F z The force group forms the force group during the rotation of valve disc 12. When valve disc 12 is closed, the force F in the z direction... z-sealingThis represents the initial preload. During this process, a portion of F... x It cannot be measured, but its impact on the overall mechanical observation is very small and negligible. This is because F is only monitored when the third force sensor 71 is present. x Relative to F z It is already very small and can be ignored; it will not affect the overall mechanical analysis.

[0058] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A magnetic control multi-directional pressure maintenance controller trigger magnetic force monitoring device, characterized in that, It comprises: a support platform (1); a valve seat holder (2) mounted on the support platform (1); a horizontal guide rail (3) mounted on the support platform (1); a vertical rod (4) fixed to the support platform (1) at the bottom; a first force sensor (51) mounted on the vertical rod (4), one end of the first force sensor (51) being used to connect with a trigger permanent magnet (5), the trigger permanent magnet (5) being used to exert a repulsive force on a valve disc permanent magnet (13) on a valve disc (12) to trigger the valve disc (12) to close; a second force sensor (61) mounted on another vertical rod (4) and movable up and down along the vertical rod (4), one end of the second force sensor (61) being connected with a vertical sliding block on the vertical rod (4), the other end of the second force sensor (61) being rotatably connected with the inner surface of the valve disc (12); a third force sensor (71) mounted on the horizontal guide rail (3) and movable along the horizontal guide rail (3), the lower end of the third force sensor (71) being connected with a horizontal sliding block on the horizontal guide rail (3), the upper end of the third force sensor (71) being rotatably connected with the inner surface of the valve disc (12); the second force sensor (61) and the third force sensor (71) are telescopic.

2. The magnetic control multi-directional pressure maintaining controller trigger magnetic force monitoring device according to claim 1, wherein, The valve seat holder (2) is a clamp structure.

3. The magnetic control multi-directional pressure maintaining controller trigger magnetic force monitoring device according to claim 1, wherein, The support platform (1) is rotatable in a vertical plane.

4. The magnetic control multi-directional pressure maintaining controller trigger magnetic force monitoring device according to claim 3, wherein, It further comprises a base (80), a movable seat (81), an annular guide rail (82) and a ring driving mechanism, the axis of the annular guide rail (82) being parallel to the horizontal plane; the support platform (1) is mounted on the movable seat (81), the movable seat (81) is mounted on the annular guide rail (82), and the ring driving mechanism is connected with the movable seat (81) for driving the movable seat (81) to move along the annular guide rail (82) in a ring direction.

5. The magnetic control multi-directional pressure maintaining controller trigger magnetic force monitoring device according to claim 4, wherein, The ring driving mechanism comprises a stepping motor (91) mounted on the movable seat (81) and a gear (92) connected with the output of the stepping motor (91), and there is a coaxial annular toothed rail (93) on the annular guide rail (82), the gear (92) being engaged with the annular toothed rail (93).

6. A magnetic control multi-directional pressure maintenance controller trigger magnetic force monitoring device according to claim 3, 4 or 5, characterized in that, The support platform (1) is connected with the movable seat (81) through a support rod (83), one end of the support rod (83) being connected with the movable seat (81), and the other end of the support rod (83) being connected with the support platform (1).

7. The magnetic control multi-directional pressure maintaining controller trigger magnetic force monitoring device according to claim 6, wherein, It further comprises a rotation driving motor (84) for driving rotation, the two sides of the support platform (1) being connected with the movable seat (81) through the support rod (83), one end of the support rod (83) being rotatably connected with the support platform (1) through a rotation shaft, the axis of the rotation shaft being perpendicular to the axis of the annular guide rail (2); the output of the rotation driving motor (84) is connected with the rotation shaft.

8. The magnetic control multi-directional pressure maintaining controller trigger magnetic force monitoring device according to claim 1, wherein, The corresponding vertical rod (4) of the second force sensor (61) is provided with a scale, and the horizontal guide rail (3) is provided with a scale.

9. A method for monitoring the triggering of a magnetic force of a magnetic multi-directional pressure maintaining controller, characterized in that, A magnetic control multi-directional pressure maintaining controller trigger magnetic force monitoring device is adopted, It comprises the following steps: First, fix the valve seat (11) of the pressure maintaining controller with the valve seat holder (2), and calibrate the first force sensor (51) to be 0. Then, slide the second force sensor (61) along the vertical rod (4) so that the valve disc (12) is in the open state, at this time the permanent magnet (5) is driven by the magnetic repulsion force, calibrate the initial force of the second sensor (61) at this time, which is equal to the measured value of the first force sensor (51), and the measured value of the third force sensor (71) is 0; Then, manually move the second force sensor (61) along the vertical rod (4) quantitatively, and the third force sensor (71) will also move along the horizontal guide rail (3), and the values of the second force sensor (61) and the third force sensor (71) are recorded during the movement; When the third force sensor (71) is located on the axis of the valve seat (11), fix the position of the third force sensor (71) on the horizontal guide rail (3) and do not move the third force sensor (71) any more; After that, continue to move the second force sensor (61) along the horizontal guide rail (3) downward until the second force sensor (61) cannot move in the vertical direction, then remove the second force sensor (61), and continue to measure the third force sensor (71); When the valve disc (12) is closed, the measured value of the third force sensor (71) is the initial pre-tightening force value of the pressure maintaining controller.

10. The method of claim 9, wherein the magnetic force is monitored by a magnetic force monitor. The displacement of the second force sensor (61) is 1mm each time.

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