Automatic measuring device for pulling distance of acoustic logging instrument

Abstract

The invention discloses an automatic measuring device for the pulling distance of an acoustic logging instrument, and relates to the technical field of acoustic logging instrument pulling distance measurement, and the automatic measuring device comprises a connecting structure and a measuring mechanism; the measuring mechanism comprises a transmission assembly and a distance measuring assembly. The transmission assembly comprises a winding wheel used for controlling the connecting structure to conduct winding, a rotating structure used for controlling the winding wheel to rotate and a guiding structure used for conducting guiding and limiting on the connecting structure. The operation function display structure, the controller, the first driving structure, the winding wheel and the rotating structure are matched to control the connecting structure to move, the connecting structure controls the acoustic logging probe to pull through the guiding structure, and the distance measuring wheel, the connecting structure and the distance measuring sensor are matched to measure the moving distance of the acoustic logging probe. Therefore, the pulling distance of the acoustic logging probe can be determined, the accuracy and precision of acoustic logging are improved, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] The invention belongs to the technical field of acoustic logging tool pull-out measurement, in particular to an automatic measuring device for acoustic logging tool pull-out. Background Art

[0002] During the excavation and construction of geotechnical engineering projects such as tunnels and metal or non-metallic mines, the formation of goafs causes stress redistribution in the surrounding rock. This process increases microcracks within the surrounding rock, magnifies macroscopic deformation of the cavern, and results in loose rock mass within a certain area of ​​the goaf. The extent of the loosened rock zone is closely related to the rock mass quality, in-situ stress conditions, and excavation methods, posing a serious threat to the safety and stability of the cavern. Borehole acoustic testing is an important method for detecting surrounding rock damage. It primarily utilizes the principle that joints and fissures in rock and soil reduce the propagation velocity of elastic waves. By observing and analyzing the propagation characteristics of acoustic waves in rock and soil, it can identify defects such as joints and fissures within the rock and soil, and derive engineering geological indicators. An acoustic well logging tool is a geophysical exploration device that measures geological parameters based on the propagation characteristics of acoustic waves in formations. It is widely used in oil and gas exploration, engineering geology, and mineral resource evaluation. Its core principle is to infer key information such as lithology, porosity, and fracture development by transmitting acoustic waves and analyzing the changes in their propagation velocity, amplitude, and frequency within the rock formation.

[0003] During the borehole acoustic wave testing process, the acoustic wave logging probe needs to be pulled out to test the wave velocity within different rock and soil bodies. According to the existing acoustic wave testing technology, the acoustic wave logging probe is basically pulled out manually. Manually pulling the acoustic wave logging probe often makes it difficult to accurately control the distance of the acoustic wave logging probe, which has a negative impact on the accuracy and precision of the acoustic wave logging, and increases the labor intensity of the staff, which cannot meet people's needs. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention proposes an automatic measuring device for the pull-out distance of an acoustic logging tool.

[0005] An automatic measuring device for the withdrawal distance of an acoustic logging instrument, applied to an acoustic logging probe of the acoustic logging instrument, comprises a connecting structure detachably connected to the acoustic logging probe and a measuring mechanism for controlling the withdrawal distance of the acoustic logging probe via the connecting structure; the measuring mechanism comprises a transmission assembly for controlling the movement of the acoustic logging probe via the connecting structure and a distance measuring assembly for processing the movement distance of the acoustic logging probe; wherein the connecting structure is configured as a traction rope made of a bendable and non-retractable material; the transmission assembly comprises a reel for controlling the reeling of the connecting structure, a rotating structure for controlling the rotation of the reel, and a guide structure for guiding and limiting the connecting structure; the distance measuring assembly comprises a distance measuring wheel that is in contact with the connecting structure and rotates drivenly, and a distance measuring sensor for measuring the number of revolutions and angles of rotation of the distance measuring wheel.

[0006] As a further solution of the present invention: the measuring mechanism also includes an explosion-proof housing for installing a transmission assembly and a ranging assembly, one end of the connecting structure extends out of the explosion-proof housing and is detachably fixed to one end of the sonic logging probe, and the other end of the connecting structure is fixedly connected to the winding wheel. The explosion-proof housing can be insulated and can isolate the transmission assembly and the ranging assembly inside the explosion-proof housing to prevent the transmission assembly and the ranging assembly from generating electric sparks that ignite combustible gases such as gas.

[0007] As a further solution of the present invention: the rotating structure includes a driven wheel fixed coaxially with the winding wheel, a rotating member arranged on the driven wheel and a driving wheel connected to the rotating member, the diameter of the driving wheel is smaller than the diameter of the driven wheel, wherein the driving wheel and the driven wheel can be configured as sprockets or pulleys, when the driving wheel and the driven wheel are both configured as sprockets, the rotating member is configured as a transmission chain, and when the driving wheel and the driven wheel are both configured as pulleys, the rotating member is configured as a transmission belt.

[0008] As a further solution of the present invention: a first drive structure for controlling the rotation of the rotating structure is installed in the explosion-proof housing. The first drive structure can be set as a first motor for controlling the rotation of the driving wheel and a reducer connected to the output shaft of the first motor. The rotating structure causes the winding wheel to rotate through the first drive structure to generate traction on the connecting structure, thereby generating tension on the end of the sonic logging probe.

[0009] As a further solution of the present invention: the guide structure includes two groups of guide wheels respectively arranged on the upper and lower sides of the connecting structure, the two groups of guide wheels are respectively fitted with the connecting structure, and the guide structure guides the connecting structure to introduce the connecting structure into the interior of the explosion-proof shell.

[0010] As a further solution of the present invention, the distance measuring wheel is arranged between the winding wheel and the guide wheel, and the distance measuring wheel and the connecting structure are in a tensioned state. There is friction between the distance measuring wheel and the connecting structure. When the connecting structure moves with the rotation of the winding wheel, the distance measuring wheel will rotate simultaneously due to the action of friction and pressure. The distance measuring sensor records the number of rotations and angles of the distance measuring wheel. The distance moved by the connecting structure can be calculated based on the data recorded by the distance measuring sensor.

[0011] As a further solution of the present invention: the ranging component also includes a controller installed inside the explosion-proof housing and a display operation function structure arranged on one side of the controller and capable of operating the controller. One end of the display operation function structure is arranged on the outside of the explosion-proof housing. The display operation function structure includes a display screen and function buttons. The controller can execute instructions of the display operation function structure, control the start and stop of the first drive structure and the operation of the ranging sensor according to the instructions, and process the ranging sensor data to display the ranging data in real time on the display screen. The display screen of the display operation function structure adopts a low-power MIP screen; the function buttons of the display operation function structure are command input buttons, specifically including buttons such as power on, power off, input ranging distance, numeric keys, start, and pause.

[0012] As a further solution of the present invention: a cleaning mechanism for cleaning impurities on the connecting structure is installed on the outside of the explosion-proof housing. The cleaning mechanism can prevent external impurities of the connecting structure from being brought into the interior of the explosion-proof housing, causing the transmission assembly and the ranging assembly to be blocked by impurities, thereby requiring the explosion-proof housing to be disassembled and opened to maintain the transmission assembly and the ranging assembly.

[0013] As a further solution of the present invention: the cleaning mechanism includes a cleaning seat that can be detachably mounted on the explosion-proof casing, a first cleaning component that is arranged at one end of the cleaning seat away from the explosion-proof casing and cleans the connecting structure, and a second cleaning component that is arranged on the inner side of the cleaning seat and cleans the connecting structure. The cleaning seat is made of insulating explosion-proof material to avoid the generation of electric sparks that ignite gas and other combustible gases.

[0014] As a further solution of the present invention: the first cleaning component includes a cleaning scraper symmetrically arranged on the outside of the cleaning seat and cleaning the outer wall of the connecting structure, and a movable frame movably arranged on the cleaning seat and controlling the cleaning scraper to move toward each other. The cleaning scraper is a semicircular tube structure, and a gap is provided between the two groups of the movable frames to facilitate the discharge of impurities cleaned inside the cleaning seat. The cleaning scraper is made of a material that will not generate electric sparks when rubbing against the connecting structure.

[0015] As a further solution of the present invention: the second cleaning assembly includes a cleaning ring rotatably mounted on the inner side of the cleaning seat and several groups of flexible cleaning structures arranged in parallel inside the cleaning ring, and the flexible cleaning structures can clean impurities adhered to the connecting structure.

[0016] As a further solution of the present invention: the flexible cleaning structure includes several groups of mounting seats installed in a circular array on the inner wall of the cleaning ring and cleaning brush heads detachably installed on the mounting seats, and the cleaning brush heads are made of a material that will not generate electric sparks when rubbing against the connecting structure.

[0017] As a further solution of the present invention: the cleaning mechanism also includes a connecting ring arranged on the outside of the cleaning ring and rotatably arranged inside the cleaning seat, a gear ring coaxially connected to the connecting ring, and a first gear arranged inside the cleaning seat and meshing with the gear ring, a second driving structure for controlling the rotation of the first gear is installed inside the cleaning seat, and a rotating chamber for rotating the gear ring and the first gear is provided inside the cleaning seat.

[0018] As a further solution of the present invention: the cleaning mechanism also includes a reinforcement member vertically installed on the movable frame and extending into the interior of the cleaning seat, and a screw transmission device symmetrically installed inside the cleaning seat and detachably connected to the reinforcement member, and the cleaning seat is provided with a movable cavity matching the reinforcement member and the screw transmission device.

[0019] As a further solution of the present invention: the cleaning mechanism also includes a second gear symmetrically arranged inside the cleaning seat and meshing with the gear ring, and a transmission rod coaxially connected to the second gear, the angle between the second gear and the first gear is set to 90 degrees, one end of the transmission rod extends into the movable cavity and controls the screw transmission device to work.

[0020] As a further solution of the present invention: the cleaning mechanism also includes a first bevel gear coaxially connected to the transmission rod and a second bevel gear meshing with the first bevel gear, the second bevel gear is rotatably installed in the movable cavity, the second bevel gear is coaxially connected to the screw transmission device, and the first bevel gear and the second bevel gear form a bevel gear structure.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The present invention is capable of controlling the movement of the connecting structure by means of the measuring mechanism, the display operation function structure, the controller, the first drive structure, the winding wheel and the rotating structure. The connecting structure controls the pulling of the acoustic logging probe through the guide structure. The distance measuring wheel, the connecting structure and the distance measuring sensor are capable of measuring the moving distance of the acoustic logging probe, which can be used to determine the pulling distance of the acoustic logging probe, improve the accuracy and precision of the acoustic logging, and reduce the labor intensity of the staff.

[0023] (2) The present invention sets up a cleaning mechanism, and the second drive structure, the first gear, the gear ring and the second gear can control the movement of the screw transmission device through the bevel gear structure, so that the screw transmission device, the reinforcement, the movable frame and the cleaning scraper cooperate to clean the impurities from the connecting structure. The second drive structure, the first gear, the gear ring and the connecting ring control the cleaning to rotate around the connecting structure, and the cleaning ring and the flexible cleaning structure cooperate to clean the impurities from the connecting structure, so as to prevent the connecting structure from bringing impurities into the interior of the explosion-proof housing so that the transmission component and the distance measuring component are blocked by impurities, thereby extending the maintenance cycle of the measuring mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a preparation flow chart of the present invention.

[0025] Figure 2 It is a partial structural diagram of the measuring mechanism in the present invention.

[0026] Figure 3 It is a cross-sectional structural diagram of the cleaning mechanism in the present invention.

[0027] Figure 4 It is a partial structural diagram of the first cleaning component and the second cleaning component in the present invention.

[0028] Figure 5 It is a partial structural diagram of the first cleaning component and the second cleaning component in the present invention.

[0029] Figure 6 It is a partial structural diagram of the bevel gear structure and transmission rod in the present invention.

[0030] Figure 7 It is a partial structural diagram of the cleaning ring and flexible cleaning structure in the present invention.

[0031] Figure 8 It is a partial structural diagram of the cleaning ring and the connecting ring in the present invention.

[0032] Figure 9 It is a schematic diagram showing the operational functional structure of the present invention.

[0033] In the figure: 1. Sonic logging probe; 2. Connecting structure; 3. Winding wheel; 4. Rotating structure; 5. Rotating rod; 6. Distance measuring wheel; 7. Distance measuring sensor; 8. Explosion-proof housing; 9. Driven wheel; 10. Rotating member; 11. Driving wheel; 12. First driving structure; 13. Guide wheel; 14. Controller; 15. Display operation function structure; 16. Cleaning seat; 17. Cleaning scraper; 18. Moving frame; 19. Cleaning ring; 20. Flexible cleaning structure; 21. Mounting seat; 22. Cleaning brush head; 23. Connecting ring; 24. Gear ring; 25. First gear; 26. Second driving structure; 27. Screw transmission device; 28. Second gear; 29. ​​Transmission rod; 30. First bevel gear; 31. Second bevel gear; 32. Reinforcement member; 33. Material guide. DETAILED DESCRIPTION

[0034] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1

[0036] See also Figure 1-2 and Figure 9 The present application provides an automatic measuring device for the withdrawal distance of an acoustic logging instrument, which is applied to an acoustic logging probe 1 of the acoustic logging instrument, comprising a connecting structure 2 detachably connected to the acoustic logging probe 1 and a measuring mechanism for controlling the withdrawal distance of the acoustic logging probe 1 through the connecting structure 2; the measuring mechanism comprises a transmission assembly for controlling the movement of the acoustic logging probe 1 through the connecting structure 2 and a distance measuring assembly for processing the movement distance of the acoustic logging probe 1; wherein the connecting structure 2 is configured as a traction rope of a flexible and non-retractable material; the transmission assembly comprises a winding wheel 3 for controlling the winding of the connecting structure 2, a rotating structure 4 for controlling the rotation of the winding wheel 3 and a guide structure for guiding and limiting the connecting structure 2; the distance measuring assembly comprises a distance measuring wheel 6 that is in contact with the connecting structure 2 and rotates drivenly, and a distance measuring sensor 7 for measuring the number of revolutions and angles of the distance measuring wheel 6.

[0037] The measuring mechanism in the present invention also includes an explosion-proof housing 8 for installing a transmission component and a ranging component. One end of the connecting structure 2 extends out of the explosion-proof housing 8 and is detachably fixed to one end of the acoustic logging probe 1. The other end of the connecting structure 2 is fixedly connected to the winding wheel 3. The explosion-proof housing 8 can be insulated and can isolate the transmission component and the ranging component inside the explosion-proof housing 8 to prevent the transmission component and the ranging component from generating electric sparks that ignite combustible gases such as gas.

[0038] In the present invention, the rotating structure 4 includes a driven wheel 9 coaxially fixed with the winding wheel 3, a rotating member 10 arranged on the driven wheel 9 and a driving wheel 11 connected to the rotating member 10. The diameter of the driving wheel 11 is smaller than the diameter of the driven wheel 9, and no relative rotation occurs between the winding wheel 3 and the driven wheel 9. The driving wheel 11 and the driven wheel 9 can both be set as sprockets or pulleys. When the driving wheel 11 and the driven wheel 9 are both set as sprockets, the rotating member 10 is set as a transmission chain. When the driving wheel 11 and the driven wheel 9 are both set as pulleys, the rotating member 10 is set as a transmission belt.

[0039] In the present invention, a first driving structure 12 for controlling the rotation of the rotating structure 4 is installed in the explosion-proof casing 8. The first driving structure 12 can be set as a first motor for controlling the rotation of the driving wheel 11 and a reducer connected to the output shaft of the first motor. The rotating structure 4 rotates the winding wheel 3 through the first driving structure 12 to generate traction on the connecting structure 2, thereby generating tension on the end of the sonic logging probe 1. When the tension of the traction rope is greater than a certain critical value, the sonic logging probe 1 will be pulled out by the traction rope.

[0040] The guide structure in the present invention includes two groups of guide wheels 13 respectively arranged on the upper and lower sides of the connecting structure 2. The two groups of guide wheels 13 are respectively fitted with the connecting structure 2. The guide structure guides the connecting structure 2 and introduces the connecting structure 2 into the interior of the explosion-proof shell 8. The guide wheel 13 is provided with a rotating rod 5 that is rotatably connected to the explosion-proof shell 8.

[0041] In the present invention, the distance measuring wheel 6 is arranged between the winding wheel 3 and the guide wheel 13. The distance measuring wheel 6 and the connecting structure 2 are in a tensioned state. There is friction between the distance measuring wheel 6 and the connecting structure 2. The guide wheel 13 is set as a guide fixed pulley to reduce the friction between the traction rope and the explosion-proof shell 8, thereby reducing the wear of the traction rope and reducing the additional power consumption of the first driving structure 12. When the connecting structure 2 moves with the rotation of the winding wheel 3, the distance measuring wheel 6 will rotate simultaneously due to the action of friction and pressure. The distance measuring sensor 7 records the number of revolutions and angles of the distance measuring wheel 6. The distance moved by the connecting structure 2 can be calculated based on the data recorded by the distance measuring sensor 7. The distance rotated by the distance measuring wheel 6 can be calculated based on the geometric relationship. Obviously, the distance rotated by the distance measuring wheel 6 is equal to the distance moved by the traction rope and also equal to the distance the sonic logging probe 1 is pulled out.

[0042] The ranging component in the present invention also includes a controller 14 installed inside the explosion-proof housing 8 and a display operation function structure 15 arranged on one side of the controller 14 and capable of operating the controller 14. One end of the display operation function structure 15 is arranged on the outside of the explosion-proof housing 8. The display operation function structure 15 includes a display screen and function buttons. The controller 14 can execute the instructions of the display operation function structure 15, control the start and stop of the first drive structure 12 and the operation of the ranging sensor 7 according to the instructions, and process the data of the ranging sensor 7, and display the ranging data in real time on the display screen. The display screen of the display operation function structure 15 adopts a low-power MIP screen, and the display screen can display the currently executed function and related data; the function buttons of the display operation function structure 15 are command input buttons, specifically including buttons such as power on, power off, input ranging distance, numeric keys, start, and pause.

[0043] In summary, after a certain pulling-out function is input in the display operation function structure 15, such as pulling out the sonic logging probe 1 by 20 cm, the controller 14 will execute this instruction and simultaneously start the first driving structure 12 and the ranging sensor 7. The first driving structure 12 drives the active wheel 11 to rotate, and the active wheel 11 drives the driven wheel 9 to rotate through the rotating member 10. The driven wheel 9 drives the winding wheel 3 to rotate, so that the winding wheel 3 drives the connecting structure 2 to move, so that the connecting structure 2 moves on the ranging wheel 6 and the guide wheel 13. The ranging wheel 6 rotates as the connecting structure 2 moves. The ranging sensor 7 records the number of revolutions and angles of the ranging wheel 6. The distance moved by the connecting structure 2 can be calculated based on the data recorded by the ranging sensor 7, and the monitoring data is displayed in real time on the display screen. When the ranging wheel 6 rotates to 20 cm, the controller 14 will issue a stop command to the first driving structure 12, so that the sonic logging probe 1 is accurately pulled out by 20 cm.

[0044] Example 2

[0045] Reference Figure 1 - Figure 8 , which is the second embodiment of the present invention, wherein a cleaning mechanism for cleaning impurities on the connecting structure 2 is installed on the outside of the explosion-proof shell 8 of the present invention. The cleaning mechanism can prevent external impurities of the connecting structure 2 from being brought into the interior of the explosion-proof shell 8, causing the transmission component and the ranging component to be blocked by impurities, thereby requiring the explosion-proof shell 8 to be disassembled and opened for maintenance of the transmission component and the ranging component.

[0046] The cleaning mechanism in the present invention includes a cleaning seat 16 that can be detachably mounted on the explosion-proof shell 8, a first cleaning component that is arranged at one end of the cleaning seat 16 away from the explosion-proof shell 8 and cleans the connecting structure 2, and a second cleaning component that is arranged on the inner side of the cleaning seat 16 and cleans the connecting structure 2. The cleaning seat 16 is made of insulating explosion-proof material to avoid the generation of electric sparks that ignite gas and other combustible gases.

[0047] The first cleaning component in the present invention includes a cleaning scraper 17 symmetrically arranged on the outside of the cleaning seat 16 and cleaning the outer wall of the connecting structure 2, and a movable frame 18 movably arranged on the cleaning seat 16 and controlling the cleaning scraper 17 to move toward each other. The cleaning scraper 17 is a semicircular tube structure, and a gap is provided between the two groups of movable frames 18 to facilitate the discharge of impurities cleaned inside the cleaning seat 16. The cleaning scraper 17 is made of a material that will not generate electric sparks when rubbed with the connecting structure 2.

[0048] The second cleaning assembly in the present invention includes a cleaning ring 19 rotatably mounted on the inner side of the cleaning seat 16 and several groups of flexible cleaning structures 20 arranged in parallel inside the cleaning ring 19. The flexible cleaning structure 20 can clean impurities adhered to the connecting structure 2. A material guide 33 is provided on the outer side of the cleaning ring 19.

[0049] The flexible cleaning structure 20 of the present invention includes several groups of mounting seats 21 installed in a circular array on the inner wall of the cleaning ring 19 and cleaning brush heads 22 detachably mounted on the mounting seats 21. The cleaning brush heads 22 are made of a material that does not generate electric sparks when rubbed with the connecting structure 2.

[0050] The cleaning mechanism in the present invention also includes a connecting ring 23 arranged on the outside of the cleaning ring 19 and rotatably arranged inside the cleaning seat 16, a gear ring 24 coaxially connected to the connecting ring 23, and a first gear 25 arranged inside the cleaning seat 16 and meshing with the gear ring 24. A second driving structure 26 for controlling the rotation of the first gear 25 is installed inside the cleaning seat 16, and a rotating chamber for rotating the gear ring 24 and the first gear 25 is provided inside the cleaning seat 16.

[0051] The cleaning mechanism of the present invention also includes a reinforcement 32 vertically mounted on the movable frame 18 and extending into the interior of the cleaning seat 16, and a screw transmission device 27 symmetrically mounted inside the cleaning seat 16 and detachably connected to the reinforcement 32. The screw transmission device 27 includes a screw vertically mounted in the movable cavity and a screw nut arranged on the screw, and the screw nut is detachably fixed to the reinforcement 32. A movable cavity matching the reinforcement 32 and the screw transmission device 27 is provided on the cleaning seat 16. The screw transmission device 27 and the reinforcement 32 symmetrically arranged cooperate to enable the two groups of movable frames 18 to move toward each other.

[0052] The cleaning mechanism of the present invention also includes a second gear 28 symmetrically arranged inside the cleaning seat 16 and meshing with the gear ring 24, and a transmission rod 29 coaxially connected to the second gear 28. The angle between the second gear 28 and the first gear 25 is set to 90 degrees. One end of the transmission rod 29 extends into the movable cavity and controls the screw transmission device 27 to work.

[0053] The cleaning mechanism in the present invention also includes a first bevel gear 30 coaxially connected to the transmission rod 29 and a second bevel gear 31 meshing with the first bevel gear 30. The second bevel gear 31 is rotatably installed in the moving cavity. The second bevel gear 31 is coaxially connected to the screw transmission device 27. The first bevel gear 30 and the second bevel gear 31 form a bevel gear structure. The bevel gear structure enables the screw transmission device 27 to control the two groups of moving frames 18 to move toward each other through the gear ring 24 and the second gear 28.

[0054] In summary, when the first driving structure 12 is started, the sonic logging probe 1 is controlled to be pulled out through the connecting structure 2, so that the connecting structure 2 passes through the cleaning seat 16 and enters the interior of the explosion-proof housing 8, and the second driving structure 26 is started, driving the first gear 25 to rotate, and the rotation of the first gear 25 drives the gear ring 24 to rotate, and the rotation of the gear ring 24 drives several groups of second gears 28 to rotate synchronously, and the second gear 28 drives the transmission rod 29 to rotate, and the transmission rod 29 drives the first bevel gear 30 to rotate, and the first bevel gear 30 drives the second bevel gear 31 to rotate, and the second bevel gear 31 drives the reinforcement member 32 to move through the screw transmission device 27, and the reinforcement member 32 drives the two groups of moving frames 18 to move toward each other, and the moving frame 18 drives the cleaning scraper 17 to move, so that the two groups of cleaning scraper 17 are fitted with the outer wall of the connecting structure 2, and the connecting structure 2 to be entered into the cleaning seat 16 is cleaned of impurities;

[0055] When the connecting structure 2 passes through the cleaning ring 19 in the cleaning seat 16, the second driving structure 26 drives the gear ring 24 to rotate through the first gear 25, the gear ring 24 drives the connecting ring 23 to rotate, the connecting ring 23 drives the cleaning ring 19 to rotate, and the cleaning ring 19 drives the cleaning brush head 22 to rotate through several groups of mounting seats 21, so that the cleaning brush head 22 cleans impurities from the connecting structure 2.

[0056] Example 3

[0057] Reference Figure 1 - Figure 9 , combining Example 1 and Example 2 to obtain this embodiment.

[0058] The display operation function structure 15, the controller 14, the first drive structure 12, the winding wheel 3 and the rotating structure 4 cooperate to control the connection structure 2 to move. The connection structure 2 controls the sonic logging probe 1 to be pulled out through the guide structure. The distance measuring wheel 6, the connection structure 2 and the distance measuring sensor 7 cooperate to measure the movement distance of the sonic logging probe 1, which can be used to determine the pull-out distance of the sonic logging probe 1, thereby improving the accuracy and precision of sonic logging and reducing the labor intensity of the staff.

[0059] The second drive structure 26, the first gear 25, the gear ring 24 and the second gear 28 can control the movement of the screw transmission device 27 through the bevel gear structure, so that the screw transmission device 27, the reinforcement 32, the movable frame 18 and the cleaning scraper 17 cooperate to clean the impurities from the connecting structure 2. The second drive structure 26, the first gear 25, the gear ring 24 and the connecting ring 23 control the cleaning ring 19 to rotate around the connecting structure 2. The cleaning ring 19 and the flexible cleaning structure 20 cooperate to clean the impurities from the connecting structure 2, thereby preventing the connecting structure 2 from bringing impurities into the interior of the explosion-proof casing 8 so that the transmission component and the ranging component are blocked by impurities, thereby extending the maintenance cycle of the measuring mechanism.

[0060] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. An automatic measuring device for the pull-out distance of an acoustic logging tool, characterized in that: It comprises a connection structure (2) detachably connected to an acoustic logging probe (1) and a measuring mechanism for controlling the distance of the acoustic logging probe (1) through the connection structure (2); The measuring mechanism comprises a transmission component for controlling the movement of the acoustic logging probe (1) through a connecting structure (2) and a distance measuring component for processing the movement distance of the acoustic logging probe (1); The transmission assembly comprises a reel (3) for controlling the connection structure (2) to reel, a rotation structure (4) for controlling the reel (3) to rotate, and a guide structure for guiding and limiting the connection structure (2); The distance measuring assembly comprises a distance measuring wheel (6) which is attached to the connection structure (2) and rotates drivenly, and a distance measuring sensor (7) for measuring the number of revolutions and angles of the distance measuring wheel (6).

2. The automatic measuring device for the pull-out distance of an acoustic logging tool according to claim 1, characterized in that: The rotating structure (4) comprises a driven wheel (9) fixed coaxially with the winding wheel (3), a rotating member (10) arranged on the driven wheel (9), and a driving wheel (11) connected to the rotating member (10).

3. The automatic measuring device for the pull-off distance of an acoustic logging tool according to claim 2, characterized in that: The guide structure comprises two groups of guide wheels (13) respectively arranged on the upper and lower sides of the connecting structure (2); The two groups of guide wheels (13) are respectively fitted with the connecting structure (2) for guidance; The distance measuring wheel (6) is arranged between the winding wheel (3) and the guide wheel (13); The distance measuring wheel (6) and the connecting structure (2) are in a tensioned state; When the connecting structure (2) moves along with the rotation of the winding wheel (3), the distance measuring wheel (6) will rotate simultaneously due to the action of friction and pressure, and the distance measuring sensor (7) records the number of revolutions and angles of the distance measuring wheel (6). The distance moved by the connecting structure (2) can be calculated based on the data recorded by the distance measuring sensor (7).

4. The automatic measuring device for the pull-out distance of an acoustic logging tool according to claim 3, characterized in that: The measuring mechanism further comprises an explosion-proof housing (8) for mounting a transmission component and a distance measuring component; A first driving structure (12) for controlling the rotation of the rotating structure (4) is installed in the explosion-proof housing (8).

5. The automatic measuring device for the pull-out distance of an acoustic logging tool according to claim 4, characterized in that: The distance measuring component further comprises a controller (14) installed inside the explosion-proof housing (8) and a display operation function structure (15) arranged on one side of the controller (14) and capable of operating the controller (14).

6. The automatic measuring device for the pull-out distance of an acoustic logging tool according to claim 4, characterized in that: A cleaning mechanism for cleaning impurities on the connection structure (2) is installed on the outside of the explosion-proof housing (8); The cleaning mechanism comprises a cleaning seat (16) detachably mounted on the explosion-proof housing (8), a first cleaning component arranged at one end of the cleaning seat (16) away from the explosion-proof housing (8) and cleaning the connection structure (2), and a second cleaning component arranged inside the cleaning seat (16) and cleaning the connection structure (2).

7. The automatic measuring device for the pull-out distance of an acoustic logging tool according to claim 6, characterized in that: The first cleaning assembly comprises a cleaning scraper (17) symmetrically arranged outside the cleaning seat (16) and cleaning the outer wall of the connection structure (2) in close contact with the cleaning scraper, and a movable frame (18) movably arranged on the cleaning seat (16) and controlling the cleaning scraper (17) to move toward each other.

8. The automatic measuring device for the pull-out distance of an acoustic logging tool according to claim 7, characterized in that: The second cleaning assembly comprises a cleaning ring (19) rotatably mounted on the inner side of the cleaning seat (16) and a plurality of groups of flexible cleaning structures (20) arranged in parallel inside the cleaning ring (19).

9. The automatic measuring device for the pull-out distance of an acoustic logging tool according to claim 8, characterized in that: The cleaning mechanism further comprises a connecting ring (23) arranged outside the cleaning ring (19) and rotatably arranged inside the cleaning seat (16), a gear ring (24) coaxially connected to the connecting ring (23), and a first gear (25) arranged inside the cleaning seat (16) and meshing with the gear ring (24); A second driving structure (26) for controlling the rotation of the first gear (25) is installed inside the cleaning seat (16); The cleaning mechanism further comprises a reinforcing member (32) vertically mounted on the movable frame (18) and extending into the interior of the cleaning seat (16), and a screw transmission device (27) symmetrically mounted inside the cleaning seat (16) and detachably connected to the reinforcing member (32).

10. The automatic measuring device for the pull-out distance of an acoustic logging tool according to claim 9, characterized in that: The cleaning mechanism further comprises a second gear (28) symmetrically arranged inside the cleaning seat (16) and meshing with the gear ring (24), and a transmission rod (29) coaxially connected to the second gear (28); The cleaning mechanism also includes a bevel gear structure that transmission-connects the transmission rod (29) to the screw transmission device (27).

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