A borehole CT cable pay-out device

Abstract

This utility model relates to the field of geophysical exploration technology and provides a borehole CT cable deployment and retraction device, including: a mounting frame, a roller, a cable, a rotary drive controller; the roller is rotatably mounted on the mounting frame; a first end of the cable is wound around the roller, and a second end of the cable is connected to the probe; the rotary drive is mounted on the mounting frame, and the output shaft of the rotary drive is connected to the roller for transmission; the controller is located on the mounting frame and electrically connected to the rotary drive, and the controller is used to control the rotary drive to drive the roller to rotate, so as to realize the automatic deployment and retraction of the cable. The borehole CT cable deployment and retraction device provided by this utility model drives the roller to rotate through the rotary drive, and adjusts the rotation direction and number of rotations of the roller, thereby realizing the adjustment of the probe position and achieving the effect of automatic adjustment of the probe position.

Description

Technical Field

[0001] This utility model relates to the field of geophysical exploration technology, and in particular to a borehole CT cable delivery and take-up device. Background Technology

[0002] Borehole CT technology is typically tested in two or more boreholes arranged vertically or obliquely. A transmitting probe is usually placed in one borehole, and a receiving probe is placed in one or more other boreholes. Measurements are taken of the elastic wave velocity and electromagnetic energy attenuation between the transmitting and receiving probes. The distribution of the medium between the two boreholes is reconstructed using inversion techniques, achieving high-resolution imaging of the medium between the boreholes.

[0003] Currently, the transmitting and receiving probes are lowered into the borehole via cables. Since the detection holes are mostly vertical or oblique and more than 50m deep, the long cable length makes it too physically demanding for operators to control the cable's extension and retraction, and makes it impossible to control the probe position, which in turn leads to deviations in the inversion imaging results. Utility Model Content

[0004] This invention provides a borehole CT cable deployment and retraction device to solve the problem in the prior art where the probe position cannot be controlled when the cable is lowered too far in the borehole, resulting in deviations in the inversion imaging results.

[0005] This utility model provides a drilling CT cable retraction and deployment device, including: a mounting bracket;

[0006] A roller is rotatably mounted on the mounting frame;

[0007] A cable, with one end wound around the roller, and the second end of the cable connected to the probe;

[0008] A rotary drive component is mounted on the mounting frame, and the output shaft of the rotary drive component is connected to the roller drive.

[0009] A controller is located on the mounting bracket and is electrically connected to the rotary drive component. The controller is used to control the rotary drive component to drive the roller to rotate, so as to realize the automatic winding and unwinding of the cable.

[0010] According to the present invention, a drilling CT cable take-up and release device is provided, wherein the rotary drive component includes a servo motor;

[0011] The controller receives the rotation information of the roller recorded by the servo motor to obtain the position information of the probe inside the borehole.

[0012] A drilling CT cable retraction and extension device according to the present invention further includes: a display;

[0013] The display is mounted on the mounting bracket and is electrically connected to the controller;

[0014] The display is used to show the position information of the probe.

[0015] According to the present invention, a drilling CT cable retraction and extension device is provided, wherein the display is provided with a first button and a second button;

[0016] The first button and the second button are spaced apart. The first button is used to control the rotary drive to rotate along a first rotation direction, and the second button is used to control the rotary drive to rotate along a second rotation direction.

[0017] The first and second rotation directions are opposite.

[0018] According to the present invention, a drilling CT cable retraction and deployment device is provided, wherein the mounting frame includes: a bracket, a first baffle, and a second baffle;

[0019] The first baffle and the second baffle are spaced apart on the bracket, and the two ends of the roller are rotatably disposed on the first baffle and the second baffle, respectively;

[0020] The rotary drive component is mounted on the outside of the first baffle.

[0021] According to the present invention, a drilling CT cable take-up and take-up device is provided, wherein the first baffle is arranged perpendicularly to the rotation axis of the roller.

[0022] According to the present invention, a drilling CT cable take-up and release device includes a roller comprising:

[0023] ontology;

[0024] A drive shaft is connected to the main body, one end of which is rotatably inserted into the first baffle, and the other end of which is rotatably inserted into the second baffle.

[0025] According to the present invention, a drilling CT cable take-up and release device further includes, in the roller, the following:

[0026] A first bearing is embedded in the first baffle, and one end of the transmission shaft is fixed to the inner ring of the first bearing;

[0027] The second bearing is embedded in the second baffle, and the other end of the drive shaft is fixed to the inner ring of the second bearing.

[0028] The drilling CT cable retraction and deployment device provided by this utility model further includes: a mounting base;

[0029] The mounting base is connected to the first baffle, and the mounting base has a hollow cavity, in which the rotary drive component is installed;

[0030] The controller is located on the top surface of the mounting base.

[0031] According to the present invention, a drilling CT cable retraction and deployment device, the mounting frame further includes: a foot;

[0032] The foot is located at the bottom of the bracket, the foot has a placement surface, and the placement surface is provided with mounting holes.

[0033] The drilling CT cable retraction and deployment device provided by this utility model automatically retracts and deploys the cable by winding one end of the cable around a roller and connecting the other end of the cable to the probe, and controlling the rotation drive to drive the roller to rotate. By adjusting the rotation direction and number of rotations of the roller, the position of the probe can be adjusted, thus achieving the effect of automatic adjustment of the probe position. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the drilling CT cable delivery and take-up device provided by this utility model.

[0036] Figure label:

[0037] 1. Mounting bracket; 11. Support bracket; 12. First baffle; 13. Second baffle; 14. Foot;

[0038] 2. Drum; 21. Body; 22. Drive shaft;

[0039] 3. Cables;

[0040] 4. Rotary drive component; 41. Output shaft;

[0041] 5. Controller;

[0042] 6. Monitor; 61. First button; 62. Second button;

[0043] 7. Mounting base; 8. Power cord; 9. Plug. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0045] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of clarifying the embodiments of this utility model 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. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0047] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] The following is combined Figure 1 The drilling CT cable take-up and take-up device provided by this utility model will be described in detail through specific embodiments and application scenarios.

[0050] like Figure 1 As shown, this embodiment provides a drilling CT cable retraction and deployment device, including: a mounting frame 1, a roller 2, a cable 3, a rotation drive 4, and a controller 5.

[0051] The roller 2 is rotatably mounted on the mounting frame 1; the first end of the cable 3 is wound around the roller 2, and the second end of the cable 3 is connected to the probe; the rotary drive 4 is mounted on the mounting frame 1, and the output shaft 41 of the rotary drive 4 is connected to the roller 2 for transmission.

[0052] The controller 5 is mounted on the mounting bracket 1 and is electrically connected to the rotary drive component 4. The controller 5 is used to control the rotary drive component 4 to drive the roller 2 to rotate, so as to realize the automatic winding and unwinding of the cable 3.

[0053] Understandably, borehole CT technology typically uses two probes: a transmitting probe and a receiving probe. The two probes are placed in two different boreholes to measure the changes in physical quantities between the transmitting and receiving probes.

[0054] Mounting bracket 1 is placed on the working surface near the borehole and provides mounting support for roller 2, cable 3, rotary drive 4 and controller 5.

[0055] The first end of the cable 3 is wound around the roller 2, and the probe is installed at the second end of the cable 3. As the roller 2 rotates, the length of the cable 3 can be changed. By adjusting the length of the cable 3 in the borehole, the position of the probe in the borehole can be adjusted.

[0056] The rotary drive unit 4 can drive the roller 2 to rotate, realizing the automatic rotation of the roller 2 without manual intervention, saving the workload of manual cable winding and unwinding, and improving work efficiency. Furthermore, the rotary drive unit 4 can drive the roller 2 to perform continuous and intermittent winding and unwinding, thereby controlling the continuous and intermittent winding and unwinding of the cable 3, achieving flexible control over the winding and unwinding of the cable 3. Further, the rotary drive unit 4 can also change the direction of rotation of the roller 2, thereby controlling the switching between winding and unwinding operations. Based on the number of rotations of the roller 2, the probe position can also be roughly adjusted.

[0057] Specifically, the rotary drive component 4 can be a motor.

[0058] The drilling CT cable retraction and extension device provided by this utility model automatically retracts and extends the cable 3 by winding one end of the cable 3 around the roller 2 and connecting the other end of the cable 3 to the probe, and controlling the rotation drive 4 to drive the roller 2 to rotate. By adjusting the rotation direction and number of rotations of the roller 2, the position of the probe can be adjusted, thereby achieving the effect of automatic adjustment of the probe position.

[0059] like Figure 1 As shown, the rotary drive component 4 in this embodiment includes a servo motor.

[0060] The controller 5 receives the rotation information of the roller 2 recorded by the servo motor to obtain the position information of the probe inside the borehole.

[0061] Understandably, servo motors offer high control precision, accurately controlling the rotation direction and angle of output shaft 41 with a short response time. Since the servo motor is equipped with an encoder, it can calculate the distance moved by output shaft 41 based on the number of pulses generated by the encoder, thereby obtaining rotation information of transmission shaft 22, such as the number of rotations and direction of rotation. The rotation direction of roller 2 corresponds to the cable 3's unwinding or rewinding state, and the number of rotations of roller 2 corresponds to the cable 3's unwinding or rewinding length. Through the rotation information of roller 2 fed back by the servo motor, controller 5 can determine whether cable 3 is currently in the unwinding or rewinding state, and thus whether the probe is in the rising or falling state, and the probe's moving distance. Since the probe's initial distance is stored in controller 5, it can calculate the probe's current position within the borehole.

[0062] like Figure 1 As shown, the borehole CT cable retraction and extension device in this embodiment also includes a display 6.

[0063] The display 6 is mounted on the mounting bracket 1 and is electrically connected to the controller 5; the display 6 is used to display the position information of the probe.

[0064] Understandably, controller 5 can control display 6 to show the probe's position information. Through the real-time display of the probe's position on display 6, the operator can intuitively observe the probe's position inside the borehole.

[0065] Specifically, in this embodiment, the display 6 is a liquid crystal display screen.

[0066] like Figure 1 As shown, the display 6 in this embodiment is provided with a first button 61 and a second button 62.

[0067] The first button 61 and the second button 62 are spaced apart. The first button 61 is used to control the rotation drive 4 to rotate in a first direction, and the second button 62 is used to control the rotation drive 4 to rotate in a second direction.

[0068] The first and second rotation directions are opposite.

[0069] It is understood that in this embodiment, the first rotation direction is clockwise and the second rotation direction is counterclockwise. The first button 61 and the second button 62 are integrated into the display 6. The first button 61 is used to control the roller 2 to rotate clockwise, thereby controlling the unwinding of the cable 3. The second button 62 is used to control the roller 2 to rotate counterclockwise, thereby controlling the rewinding of the cable 3.

[0070] The operator can control the extension and retraction of the cable 3 by pressing the first button 61 and the second button 62, and observe the specific position of the probe in the borehole through the display 6, and adjust the extension and retraction status of the cable 3 in real time.

[0071] like Figure 1 As shown, the mounting bracket 1 in this embodiment includes: a bracket 11, a first baffle 12, and a second baffle 13.

[0072] The first baffle 12 and the second baffle 13 are spaced apart on the bracket 11, and the two ends of the roller 2 are rotatably disposed on the first baffle 12 and the second baffle 13, respectively.

[0073] The rotary drive component 4 is installed on the outside of the first baffle 12.

[0074] Understandably, the first baffle 12 and the second baffle 13 are strip plates, the bracket 11 has a frame structure, the first baffle 12 is located on one side of the bracket 11, and the second baffle 13 is located on the other side of the bracket 11. The first baffle 12 and the second baffle 13 are welded to the bracket 11 and are both reinforced to the bracket 11 by riveting.

[0075] The roller 2 is rotatably mounted on the first baffle 12 and the second baffle 13. As the roller 2 rotates, it can retract and extend the cable 3. The rotary drive 4 is mounted on the outside of the first baffle 12, and the rotary drive 4 and the roller 2 are connected by a hole in the first baffle 12.

[0076] Alternatively, the bracket 11 may be made of metal.

[0077] like Figure 1 As shown, in this embodiment, the first baffle 12 is arranged perpendicular to the rotation axis of the roller 2.

[0078] Understandably, the rotation axis of the roller 2 is perpendicular to the first baffle 12, so that the roller 2 rotates perpendicularly relative to the first baffle 12. Since the first baffle 12 is perpendicular to the working surface, the rotation axis of the roller 2 is parallel to the working surface, which is more conducive to the winding and unwinding of the cable 3.

[0079] like Figure 1 As shown, the roller 2 in this embodiment includes a body 21 and a drive shaft 22.

[0080] The drive shaft 22 is connected to the body 21. One end of the drive shaft 22 is rotatably inserted into the first baffle 12, and the other end of the drive shaft 22 is rotatably inserted into the second baffle 13.

[0081] Understandably, the main body 21 is mounted on the drive shaft 22, and the rotation of the main body 21 relative to the first baffle 12 and the second baffle 13 is achieved by the rotation of the drive shaft 22 relative to the first baffle 12 and the second baffle 13. The cable 3 is wound around the outer wall of the main body 21, and the cable is switched between the winding and unwinding states relative to the main body 21.

[0082] Optionally, the output shaft 41 of the rotary drive 4 is connected to the transmission shaft 22 via a gear. Specifically, the output shaft 41 and the gear, as well as the gear and the transmission shaft 22, can be connected via key pins.

[0083] like Figure 1 As shown, the roller 2 in this embodiment also includes a first bearing and a second bearing.

[0084] The first bearing is embedded in the first baffle 12, and one end of the transmission shaft 22 is fixed to the inner ring of the first bearing.

[0085] The second bearing is embedded in the second baffle 13, and the other end of the transmission shaft 22 is fixed to the inner ring of the second bearing.

[0086] Understandably, one end of the drive shaft 22 is connected to the first baffle 12 via the first bearing, and the other end of the drive shaft 22 is connected to the second baffle 13 via the second bearing. The first and second bearings ensure the rotational stability and reliability of the drive shaft 22.

[0087] like Figure 1 As shown, the drilling CT cable retraction and deployment device in this embodiment also includes: a mounting base 7.

[0088] Mounting base 7 is connected to the first baffle 12. Mounting base 7 has a hollow cavity, and the rotary drive component 4 is installed in the cavity.

[0089] The controller 5 is located on the top surface of the mounting base 7.

[0090] Understandably, in this embodiment, the mounting base 7 is welded to the middle of the first baffle 12, and the rotary drive 4 is installed in the cavity of the mounting base 7. The first baffle 12 is provided with a through hole, and the drive shaft 22 of the roller 2 is connected to the output shaft 41 of the rotary drive 4 through the through hole.

[0091] Furthermore, the controller 5 is located on the top surface of the mounting base 7, and the display 6 is embedded in the controller 5, saving installation space.

[0092] like Figure 1 As shown, the mounting bracket 1 in this embodiment also includes: a foot 14.

[0093] The foot 14 is located at the bottom of the bracket 11. The foot 14 has a placement surface and mounting holes are provided on the placement surface.

[0094] Understandably, the foot 14 is used to fix the bracket 11 to the working surface. In this embodiment, the foot 14 has a flat placement surface for good contact with the working surface. Furthermore, the placement surface is provided with mounting holes, which can be used to install and fix the foot 14 according to the actual situation of the working surface. For example, fasteners can be inserted into the mounting holes to fix the working surface and the foot 14, or the mounting holes can also be used to connect certain configuration devices to increase the counterweight of the mounting bracket 1.

[0095] Optionally, multiple feet 14 may be provided, with multiple feet 14 spaced apart at the bottom of the bracket 11. In this embodiment, four feet 14 are provided.

[0096] like Figure 1 As shown, this embodiment also includes a power cord 8 and a plug 9. One end of the power cord 8 passes through the mounting base 7 and is electrically connected to the rotary drive component 4 and the controller 5. The other end of the power cord 8 is connected to the plug 9, which can be connected to an external power supply device for power supply operation.

[0097] In practical applications, the operating steps for the cable take-up and drop device 3 of the borehole CT are as follows:

[0098] First, the cable 3 is wound around the roller 2. After the cable 3 is wound and the probe is at the bottom of the roller 2, the first button 61 on the display 6 is pressed. After the controller 5 receives the lowering command, it drives the rotary drive 4 to move. The rotary drive 4 drives the transmission shaft 22 to rotate through the output shaft 41. The transmission shaft 22 then drives the roller 2 to rotate, and the cable 3 is slowly released from the roller 2, lowering the probe to the designated position. The rotary drive 4 records the movement distance of the transmission shaft 22 and displays the lowering length of the cable 3 in real time on the display 6. After lowering to the designated position, the first button 61 is stopped, and the roller 2 stops rotating.

[0099] The second step is to press the second button 62 on the display 6 when the probe needs to be retracted. After receiving the retraction command, the controller 5 drives the rotary drive 4 to move. The rotary drive 4 drives the transmission shaft 22 to rotate through the output shaft 41. The transmission shaft 22 then drives the roller 2 to rotate, causing the cable 3 to be slowly retracted from the roller 2. The rotary drive 4 records the movement distance of the transmission shaft 22 and displays the remaining length of the cable 3 in real time on the display 6. When the cable 3 is retracted to the specified length, the second button 62 on the display 6 is stopped, and then the roller 2 stops rotating.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A borehole CT wireline device, comprising: include: Mounting rack; A roller is rotatably mounted on the mounting frame; A cable, with one end wound around the roller, and the second end of the cable connected to the probe; A rotary drive component is mounted on the mounting frame, and the output shaft of the rotary drive component is connected to the roller drive. A controller is located on the mounting bracket and is electrically connected to the rotary drive component. The controller is used to control the rotary drive component to drive the roller to rotate, so as to realize the automatic winding and unwinding of the cable.

2. The borehole CT wireline device of claim 1, wherein, The rotary drive component includes a servo motor; The controller receives the rotation information of the roller recorded by the servo motor to obtain the position information of the probe inside the borehole.

3. The borehole CT wireline device of claim 2, wherein, Also includes: monitor; The display is mounted on the mounting bracket and is electrically connected to the controller; The display is used to show the position information of the probe.

4. The borehole CT wireline device of claim 3, wherein, The display is equipped with a first button and a second button; The first button and the second button are spaced apart. The first button is used to control the rotary drive to rotate along a first rotation direction, and the second button is used to control the rotary drive to rotate along a second rotation direction. The first and second rotation directions are opposite.

5. The borehole CT cable retraction and deployment device according to claim 1, characterized in that, The mounting bracket includes: a bracket, a first baffle, and a second baffle; The first baffle and the second baffle are spaced apart on the bracket, and the two ends of the roller are rotatably disposed on the first baffle and the second baffle, respectively; The rotary drive component is mounted on the outside of the first baffle.

6. The borehole CT wireline device of claim 5, wherein, The first baffle is arranged perpendicular to the rotation axis of the roller.

7. The borehole CT wireline device of claim 5 wherein, The roller includes: ontology; A drive shaft is connected to the main body, one end of which is rotatably inserted into the first baffle, and the other end of which is rotatably inserted into the second baffle.

8. The borehole CT wireline device of claim 7, wherein, The roller also includes: A first bearing is embedded in the first baffle, and one end of the transmission shaft is fixed to the inner ring of the first bearing; The second bearing is embedded in the second baffle, and the other end of the drive shaft is fixed to the inner ring of the second bearing.

9. The borehole CT wireline device of claim 5, wherein, Also includes: Mounting base; The mounting base is connected to the first baffle, and the mounting base has a hollow cavity, in which the rotary drive component is installed; The controller is located on the top surface of the mounting base.

10. The borehole CT wireline device of claim 5, wherein, The mounting bracket also includes: feet; The foot is located at the bottom of the bracket, the foot has a placement surface, and the placement surface is provided with mounting holes.

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