A cable self-tensioning logging vehicle

Abstract

The application discloses a cable self-tensioning well logging vehicle, which comprises a cable winding machine installed on a mounting frame of a vehicle body of the well logging vehicle, wherein the cable passes through a cable dredging mechanism, a guide pulley, a binding mechanism and a pneumatic tensioning mechanism in sequence and extends into a well, the pneumatic tensioning mechanism is arranged at a well mouth and seals the well mouth, the pneumatic tensioning mechanism is communicated with a bypass pipe, the cable dredging mechanism, the guide pulley and the binding mechanism are connected with the mounting frame, and a vertical hydraulic cylinder is arranged between the binding mechanism and the pneumatic tensioning mechanism. The well logging equipment is ensured to keep in a tensioned state during being lowered into the well, the cable connected with the well logging equipment is prevented from being wound and knotted due to being too loose, the well mouth is effectively sealed, and the pressure liquid in the well is prevented from being discharged to contaminate the equipment on the well; during the cable recovery process, the silt and sundries on the cable are effectively removed, and the service life of the cable is prolonged. The application is suitable for the technical field of the well logging vehicle in geological well logging.

Description

Technical Field

[0001] This invention belongs to the technical field of geological logging, specifically, it relates to a cable self-tensioning logging vehicle. Background Technology

[0002] Currently, well logging operations are necessary to obtain various data from the wellbore. Generally, a traction device is used to move the logging equipment within the well, where it collects data. However, during data acquisition, because the logging equipment needs to reach considerable depths, the cables connecting to the equipment may become slack, making them prone to tangling and knotting inside the well. Furthermore, during logging operations, pressurized fluids often surge out of the well, splashing liquids onto external equipment and causing contamination that is difficult to clean. After logging is completed, the retrieved cables are often covered with a layer of silt and other debris; if not cleaned promptly, this can shorten the cable's lifespan. Summary of the Invention

[0003] This invention provides a cable self-tensioning logging vehicle to ensure that the cable connected to the logging equipment remains taut during the process of lowering the logging equipment into the well, preventing the cable from becoming too loose and tangling or knotting, and effectively sealing the wellhead to prevent pressurized fluid from escaping and contaminating the equipment above ground; and effectively removing silt and other debris from the cable during the cable retrieval process, thereby improving the cable's service life.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A cable self-tensioning logging vehicle includes a cable winch mounted on a mounting frame on the logging vehicle body. The cable passes sequentially through a cable dredging mechanism, a guide pulley, a tightening mechanism, and a pneumatic tensioning mechanism and extends into the well. The pneumatic tensioning mechanism is located at the wellhead and seals the wellhead. The pneumatic tensioning mechanism is connected to a bypass pipe. The cable dredging mechanism, guide pulley, and tightening mechanism are all connected to the mounting frame. A vertical hydraulic cylinder is provided between the tightening mechanism and the pneumatic tensioning mechanism.

[0006] Furthermore, the tightening mechanism includes an air-expanding sleeve rotatably mounted on the connecting seat, and multiple connecting screws fixed at intervals on the connecting seat. Each connecting screw vertically passes through a corresponding part of the mounting frame, and a connecting nut is threadedly connected to the part of the connecting screw extending out of the mounting frame. One end of the vertical hydraulic cylinder is connected to the lower end of the connecting seat, and the other end of the vertical hydraulic cylinder is connected to the upper end of the pneumatic tensioning mechanism.

[0007] Furthermore, the pneumatic tensioning mechanism includes a tensioning airbag installed inside the assembly cylinder. The inner peripheral wall of the tensioning airbag forms a tensioning channel, and the outer peripheral wall of the tensioning airbag forms an overflow cavity with the assembly cylinder. A plurality of connecting holes are constructed on the tensioning airbag, and each connecting hole connects the tensioning channel and the overflow cavity. The connecting holes are isolated from the inflation cavity of the tensioning airbag.

[0008] Furthermore, the assembly cylinder includes a first connecting part, a rotating part, and a second connecting part connected sequentially downward in a vertical direction. The rotating part is rotatably connected to the first connecting part and the second connecting part. A connecting joint for connecting to a bypass pipe is constructed on the rotating part. The connecting joint is connected to the overflow cavity.

[0009] Furthermore, a plurality of strip-shaped protrusions are uniformly constructed along the circumference of the inner peripheral wall of the tightening airbag. Each strip-shaped protrusion extends along the axial direction of the tightening airbag to the lower part of the tightening airbag, and the lower part of the strip-shaped protrusion smoothly transitions to the inner peripheral wall of the tightening airbag through an inclined transition portion.

[0010] Furthermore, the tightening airbag is rotatably connected to the assembly cylinder, and a first connecting flange and a second connecting flange are respectively constructed at the upper and lower ends of the tightening airbag. A first rotating disk and a second rotating disk are rotatably connected to the upper and lower end faces of the assembly cylinder, respectively. The first connecting flange and the second connecting flange are respectively adapted to the first rotating disk and the second rotating disk, and multiple fixing screws pass through the first rotating disk and the second rotating disk and connect the first connecting flange and the second connecting flange.

[0011] Furthermore, the tightening airbag is a trumpet-shaped structure with a gradually expanding diameter in the vertical direction, and the diameter of the tightening channel also gradually expands in the vertical direction.

[0012] Furthermore, the cable dredging mechanism includes a mounting base mounted on a mounting frame via support legs, on which a horn-shaped dredging cover is mounted. The cable extends into the dredging cover through its small-diameter end and extends through its large-diameter end to the cable winch.

[0013] Furthermore, the sludge removal cover has a pressure water chamber, and the inner wall of the sludge removal cover is covered with flushing holes that communicate with the pressure water chamber. A water inlet connector is constructed on the mounting base, and the water inlet connector communicates with the pressure water chamber.

[0014] Furthermore, a transition ring is constructed at the large-diameter end of the sludge removal cover, and multiple swirling ports communicating with the pressure water chamber are evenly opened on the transition ring along its circumference. The transition ring is rotatably assembled in the mounting base, and a water outlet is constructed on the mounting base at a position symmetrical to the water inlet connector. Both the water inlet connector and the water outlet connector are connected to the annular water distribution channel of the mounting base, and the annular water distribution channel is connected to the pressure water chamber through the swirling ports.

[0015] The present invention, by employing the aforementioned structure, achieves a technological advancement compared to existing technologies in the following ways: When lowering logging equipment into the well, if gravity is insufficient for the equipment's descent, a traction device pulls the equipment, allowing it to continue moving within the well. During this process, the cable connected to the logging equipment also moves along the wellbore. To prevent the cable from becoming too loose, a pneumatic tensioning mechanism is controlled to exert a certain binding force on the cable. Thus, under the traction force, the portion of the cable located between the logging equipment and the pneumatic tensioning mechanism remains taut. Furthermore, the pneumatic tensioning mechanism can be adjusted to change the cable's binding force according to specific needs, ensuring the cable remains taut while being lowered into the well. Before lowering the logging equipment, assembly is required. This necessitates fixing and aligning the two ends of the logging equipment. Specifically, the lower component of the logging equipment is tightened using the pneumatic tensioning mechanism, and the upper component is tightened using a clamping mechanism. Then, the clamping mechanism is disconnected from the mounting frame, and the vertical hydraulic cylinder is activated, causing the clamping mechanism to move the tightened component downwards until the two components contact each other. Finally, a special tool is used... The device connects the upper and lower components together. After connection, the tightening mechanism and pneumatic tensioning mechanism are released from their respective components to facilitate lowering and logging operations. Furthermore, during logging, the upper end of the vertical hydraulic cylinder is connected to the mounting frame via the tightening mechanism and its position is fixed. This allows the pneumatic tensioning mechanism to press against and seal the wellhead through the vertical hydraulic cylinder, ensuring that the liquid inside the well does not splash. Additionally, depending on the specific situation, the device can drain the liquid entering the pneumatic tensioning mechanism through a bypass pipe to prevent excessive well pressure. After logging is completed, the cables and... During the retrieval of the logging equipment, a pneumatic tensioning mechanism removes some of the silt and other debris from the cable. After passing through the cable cleaning mechanism, the remaining silt and other debris are removed, ensuring the cleanliness of the cable surface. In summary, this invention ensures that the cable connected to the logging equipment remains taut throughout the process of lowering the equipment into the well, preventing the cable from becoming too loose and tangling or knotting. It also effectively seals the wellhead, preventing pressurized fluid from escaping and contaminating the equipment above ground. Furthermore, the retrieval process effectively removes silt and other debris from the cable, improving its service life. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1This is a side view of the structure according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure after removing the body of the logging vehicle in an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A structural diagram from another angle;

[0021] Figure 4 This is a front view of the structure in an embodiment of the present invention where the tightening mechanism and the pneumatic tensioning mechanism are connected by a vertical hydraulic cylinder;

[0022] Figure 5 This is a schematic diagram of the fastening structure according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the pneumatic tensioning mechanism according to an embodiment of the present invention;

[0024] Figure 7 This is an axial structural cross-sectional view of the pneumatic tensioning mechanism according to an embodiment of the present invention;

[0025] Figure 8 This is an axial structural cross-sectional view of the assembly cylinder after the tensioning airbag with strip-shaped protrusions is installed in an embodiment of the present invention;

[0026] Figure 9 A schematic diagram of the disassembled assembly cylinder, consisting of a first connecting part, a rotating part, and a second connecting part, according to an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the connection between the compression airbag and the fixing screw in an embodiment of the present invention;

[0028] Figure 11 This is a partial structural cross-sectional view of a tightening airbag with strip-shaped protrusions according to an embodiment of the present invention;

[0029] Figure 12 This is a schematic diagram of the structure of the trumpet-shaped compression airbag according to an embodiment of the present invention;

[0030] Figure 13 for Figure 12 A structural diagram from another angle;

[0031] Figure 14 This is a schematic diagram of the cable dredging mechanism according to an embodiment of the present invention;

[0032] Figure 15 This is a schematic diagram of the disassembled cable dredging mechanism according to an embodiment of the present invention;

[0033] Figure 16 This is an axial structural cross-sectional view of the sludge removal cover in the cable sludge removal mechanism of an embodiment of the present invention.

[0034] Components marked: 100-Logging vehicle body, 101-Mounting frame, 200-Cable winch, 300-Cable, 400-Guide pulley, 500-Tightening mechanism, 501-Connecting seat, 502-Air expansion sleeve, 503-Connecting screw, 504-Connecting nut, 600-Vertical hydraulic cylinder, 700-Pneumatic tensioning mechanism, 701-First connecting part, 702-Rotating part, 703-Connecting joint, 704-Second connecting part, 705-Overflow chamber, 706-First rotating disk, 707-Second rotating disk, 708-Tightening airbag, 709-Tightening channel 710-Connecting hole, 711-Inflation chamber, 712-Strip protrusion, 713-Inflation connector, 714-Fixing screw, 715-Transition section, 716-First connecting flange, 717-Second connecting flange, 718-Connecting ear, 800-Cable sludge removal mechanism, 801-Support leg, 802-Assembly seat, 803-Annular water distribution channel, 804-Inlet connector, 805-Outlet connector, 806-Sludge removal cover, 807-Pressure water chamber, 808-Sludge scraping nozzle, 809-Adapter ring, 810-Swirl port, 811-Flushing hole, 812-Sludge removal blade. Detailed Implementation

[0035] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0036] This invention discloses a cable self-tensioning logging vehicle, such as... Figure 1-16As shown, the system includes a logging vehicle body 100, a mounting frame 101, a cable winch 200, a cable dredging mechanism 800, a guide pulley 400, a tensioning mechanism 500, and a pneumatic tensioning mechanism 700. The cable winch 200 is mounted on the mounting frame 101 of the logging vehicle body 100. One end of the cable 300 extends from the cable winch 200 and passes sequentially through the cable dredging mechanism 800, the guide pulley 400, the tensioning mechanism 500, and the pneumatic tensioning mechanism 700 before entering the well. The pneumatic tensioning mechanism 700 is located at the wellhead and seals the wellhead. A bypass pipe is connected to the pneumatic tensioning mechanism 700. The cable dredging mechanism 800, the guide pulley 400, and the tensioning mechanism 500 are all connected to the mounting frame 101. A vertical hydraulic cylinder 600 is provided between the tensioning mechanism 500 and the pneumatic tensioning mechanism 700.The working principle and advantages of this invention are as follows: When the logging equipment is lowered into the well, if gravity is insufficient to lower the equipment, a traction device pulls the equipment, allowing it to continue moving within the well. During this process, the cable 300 connected to the logging equipment also moves along the wellbore. To prevent the cable 300 from becoming too loose, a pneumatic tensioning mechanism 700 is controlled to exert a certain binding force on the cable 300. Thus, under the action of the traction force, the portion of the cable 300 located between the logging equipment and the pneumatic tensioning mechanism 700 remains taut. Furthermore, the pneumatic tensioning mechanism 700 can be adjusted according to specific needs. The 0-pressure binding force on cable 300 ensures that cable 300 is smoothly lowered into the well while maintaining tension. Furthermore, before lowering the logging equipment, assembly is required. This necessitates fixing and aligning both ends of the logging equipment. Specifically, the lower component of the logging equipment is tightened using a pneumatic tensioning mechanism 700, and the upper component is tightened using a tightening mechanism 500. Then, the connection between the tightening mechanism 500 and the mounting frame 101 is released, and the vertical hydraulic cylinder 600 is activated, causing the tightening mechanism 500 to move its tightened component downwards until the two components contact each other. Finally, a special tool is used to connect the upper and lower components together. After connection is complete, the tightening mechanism 500 and the pneumatic tensioning mechanism 700 are released from their respective components to facilitate lowering and logging operations. Furthermore, during logging, the upper end of the vertical hydraulic cylinder 600 is connected to the mounting frame 101 via the tightening mechanism 500 and its position is fixed. This allows the pneumatic tensioning mechanism 700 to press against and seal the wellhead through the vertical hydraulic cylinder 600, ensuring that the liquid inside the well does not splash. Additionally, depending on the specific situation, the liquid entering the pneumatic tensioning mechanism 700 can be drained through a bypass pipe to prevent excessive well pressure. After logging is completed, the cable 300 and logging equipment need to be retrieved. During the retrieval process, the pneumatic tensioning mechanism 700 removes some of the silt and other debris from the cable 300. After passing through the cable cleaning mechanism 800, the remaining silt and other debris are removed, ensuring the cleanliness of the cable 300 surface. In summary, this invention ensures that the cable 300 connected to the logging equipment remains taut throughout the process of lowering the logging equipment into the well, preventing the cable 300 from becoming too loose and tangling or knotting. It also effectively seals the wellhead, preventing pressurized liquid from escaping and contaminating the equipment above ground. During the retrieval of the cable 300, silt and other debris are effectively removed, improving the service life of the cable 300.

[0037] As a preferred embodiment of the present invention, such as Figure 2 , 4As shown in Figure 5, the tightening mechanism 500 includes a connecting seat 501 and an air sleeve 502. The air sleeve 502 is rotatably mounted on the connecting seat 501. Multiple connecting screws 503 are fixed at intervals on the connecting seat 501. Each connecting screw 503 vertically passes through a corresponding part of the mounting frame 101, and a connecting nut 504 is threaded onto the part of the connecting screw 503 extending out of the mounting frame 101. One end of the aforementioned vertical hydraulic cylinder 600 is connected to the lower end of the connecting seat 501, and the other end of the vertical hydraulic cylinder 600 is connected to the upper end of the pneumatic tensioning mechanism 700. The working principle and advantages of this embodiment are as follows: When assembling the logging equipment, the control clamping mechanism 500 and the pneumatic tensioning mechanism 700 clamp two components of the logging equipment respectively. When the two components to be connected are fully clamped, they are completely aligned in the vertical direction. Then, the connecting nut 504 is loosened, causing the vertical hydraulic cylinder 600 to extend and retract under control. The vertical hydraulic cylinder 600 drives the connecting seat 501 to move in the vertical direction, which in turn causes the air expansion sleeve 502 to move the component it is binding towards the other component, achieving contact between the two components. Then, the air expansion sleeve 502 is rotated (while the vertical hydraulic cylinder 600 gradually and slightly drives the connecting seat 501 downward), so that the two components are threadedly connected and fixed to each other. After the connection is completed, the clamping mechanism 500 and the pneumatic tensioning mechanism 700 are released from binding the two components. Moreover, the clamping mechanism 500 in this embodiment also serves to tension the cable 300 and remove sludge from the surface of the cable 300.

[0038] As a preferred embodiment of the present invention, such as Figure 6-7As shown, the pneumatic tensioning mechanism 700 includes an assembly cylinder and a tensioning airbag 708. The tensioning airbag 708 is installed inside the assembly cylinder, and the inner peripheral wall of the tensioning airbag 708 forms a tensioning channel 709. An overflow cavity 705 is formed between the outer peripheral wall of the tensioning airbag 708 and the assembly cylinder. In this embodiment, a plurality of connecting holes 710 are constructed on the tensioning airbag 708, wherein each connecting hole 710 connects the tensioning channel 709 and the overflow cavity 705, and the connecting holes 710 are isolated from the inflation cavity 711 of the tensioning airbag 708. An inflation connector 713 is constructed at the upper end of the tensioning airbag 708, and the inflation connector 713 is connected to the inflation cavity 711. In this embodiment, two connecting ears 718 are arranged opposite each other at the upper end of the assembly cylinder, and there are two vertical hydraulic cylinders 600. These two vertical hydraulic cylinders 600 are detachably connected to the two connecting ears 718 respectively. The working principle and advantages of this embodiment are as follows: In this embodiment, the inflation chamber 711 is inflated through the inflation connector 713, causing the tightening airbag 708 to gradually expand. This causes the diameter of the tightening channel 709 to gradually decrease, tightening the cable 300 it passes through. This ensures that the cable 300 located in the well remains taut under the traction of the traction device. During cable retrieval, the tightening channel 709 can also scrape away some of the silt and other debris adhering to the cable 300. When pressurized liquid surges in the well, the diameter of the tightening channel 709 is controlled to prevent liquid from spraying out from its upper port. Instead, this liquid enters the overflow chamber 705 through the connecting hole 710 in the tightening channel 709. If it is necessary to drain the liquid, the bypass pipe is connected to the assembly cylinder, allowing the pressurized liquid in the overflow chamber 705 to be discharged through the bypass pipe, thus preventing splashing of pressurized liquid and contamination of the equipment above ground.

[0039] As a preferred embodiment of the present invention, such as Figure 7-9 As shown, the assembly cylinder includes a first connecting part 701, a rotating part 702, and a second connecting part 704 connected sequentially downwards in a vertical direction. The rotating part 702 is rotatably connected to the first connecting part 701 and the second connecting part 704. A connecting joint 703 is constructed on the rotating part 702, which is used to connect to a bypass pipe and communicates with an overflow chamber 705. In this embodiment, rotating the rotating part 702 changes the angle of the connecting joint 703, thereby facilitating the connection between the connecting joint 703 and the bypass pipe.

[0040] As a preferred embodiment of the present invention, such as Figure 8-11As shown, a plurality of strip-shaped protrusions 712 are constructed on the inner peripheral wall of the constriction airbag 708, and these strip-shaped protrusions 712 are uniformly arranged along the circumference of the constriction airbag 708. Each strip-shaped protrusion 712 extends along the axial direction of the constriction airbag 708 to the lower part of the constriction airbag 708, and the lower part of the strip-shaped protrusion 712 smoothly transitions with the inner peripheral wall of the constriction airbag 708 via an inclined transition portion 715. In this embodiment, to achieve the passive rotation of the clamping airbag 708 during the cable 300 retrieval process and to efficiently remove silt and other debris adhering to the cable 300; and to effectively clamp the cable 300 while it is below the cable 300, and to reduce the friction between the clamping airbag 708 and the cable 300 to prevent long-term wear and damage to the surface of the cable 300 or the clamping airbag 708, the following measures are taken: the clamping airbag 708 is rotatably connected to the assembly cylinder; a first connecting flange 716 and a second connecting flange 717 are respectively constructed at the upper and lower ends of the clamping airbag 708; a first rotating disk 706 and a second rotating disk 707 are rotatably connected to the upper and lower end faces of the assembly cylinder; the first connecting flange 716 and the second connecting flange 717 are respectively adapted to the first rotating disk 706 and the second rotating disk 707; and multiple fixing screws 714 pass through the first rotating disk 706 and the second rotating disk 707 and connect the first connecting flange 716 and the second connecting flange 717. The working principle and advantages of this embodiment are as follows: When the cable 300 is lowered or retracted, rotating the first connecting flange 716 causes the tightening airbag 708 to twist, thereby causing the strip-shaped protrusions 712 on the inner peripheral wall of the tightening airbag 708 to extend in a spiral shape. Then, the first connecting flange 716, the second connecting flange 717, the first rotating disk 706, and the second rotating disk 707 are connected by the fixing screw 714, so that the tightening airbag 708 always remains in a twisted state. In this way, during the movement of the cable 300, the cable 300 is connected to the tightening airbag 708 by means of the tightening airbag 708. The relative movement of the strip-shaped protrusions 712 causes the strip-shaped protrusions 712 to drive the tensioning airbag 708 to rotate, thereby ensuring that the cable 300 maintains a taut shape, and part of the external force that hinders the movement of the cable 300 is converted into energy to drive the tensioning airbag 708 to rotate; moreover, during the cable 300 retraction process, the strip-shaped protrusions 712 rotate with the tensioning airbag 708, and the strip-shaped protrusions 712 play a role in scraping mud. As the strip-shaped protrusions 712 rotate, they scrape the mud on the surface of the cable 300, effectively removing the mud from the surface of the cable 300.

[0041] As a preferred embodiment of the present invention, such as Figure 12-13As shown, the tightening airbag 708 is a trumpet-shaped structure with its diameter gradually expanding downwards in the vertical direction, and the diameter of the tightening channel 709 also gradually expands downwards in the vertical direction. Thus, when the tightening airbag 708 is inflated, its upper port gradually decreases until it closes, while the lower port remains open. Therefore, when the wellhead is sealed, the pressurized fluid inside the well enters the lower part of the tightening channel 709 through the lower port of the tightening airbag 708, then enters the overflow chamber 705 through the connecting hole 710, and is discharged through the bypass pipe, thereby preventing splashing of fluid from the wellhead and effectively diverting the fluid gushing out of the well. When the cable 300 is retrieved, the trumpet-shaped tightening channel 709 can effectively discharge the scraped sludge, preventing sludge from clogging the tightening channel 709. In this embodiment, when retrieving the cable 300, the pneumatic tensioning mechanism 700 is raised and offset from the wellhead, thus effectively preventing the scraped sludge from re-entering the well.

[0042] As a preferred embodiment of the present invention, such as Figure 14-16 As shown, the cable dredging mechanism 800 includes a mounting base 802 and a dredging cover 806. A support leg 801 is constructed at the lower part of the mounting base 802 and is mounted on the mounting frame 101. The dredging cover 806 is mounted on the mounting base 802 and has a trumpet-shaped structure. The small-diameter end of the dredging cover 806 is a scraping nozzle 808. The cable 300 passes through the scraping nozzle 808 of the dredging cover 806 and extends through the large-diameter end of the dredging cover 806 to the cable winch 200. In this embodiment, multiple dredging blades 812 are constructed on the outer surface of the dredging cover 806, and these blades 812 are evenly arranged along the circumference of the dredging cover 806. The working principle and advantages of this embodiment are as follows: During the winding process of the cable winch 200, the cable 300 passes through the cleaning cover 806 via the scraper nozzle 808. The scraper nozzle 808 scrapes off the silt from the cable 300. The scraped silt accumulates on the outer surface of the cleaning cover 806, and due to the trumpet-shaped structure of the cleaning cover 806, this silt gradually detaches from the outer surface of the cleaning cover 806. Moreover, due to the setting of the cleaning blades 812, on the one hand, the strength of the cleaning cover 806 itself is improved, and on the other hand, when the cleaning cover 806 rotates, the silt removal effect on the outer surface of the cleaning cover 806 is obvious.

[0043] As a preferred embodiment of the present invention, such as Figure 15-16As shown, in order to fully and effectively remove stains and other contaminants from the cable 300, the method adopted is to rinse the surface of the cable 300 with clean water to achieve the purpose of cleaning. Specifically, the cleaning cover 806 of this embodiment has a pressure water chamber 807, and the inner wall of the cleaning cover 806 is covered with rinsing holes 811, all of which are connected to the pressure water chamber 807. A water inlet connector 804 is constructed on the mounting base 802, which is connected to the pressure water chamber 807. The working principle and advantages of this embodiment are: high-pressure cleaning water enters the pressure water chamber 807 through the water inlet connector 804, and then flows out from each rinsing hole 811 and sprays onto the cable 300, so that the stains on the cable 300 are fully rinsed off. In this embodiment, to improve the cleaning effect of the cable 300, a rotating flushing method is adopted. Specifically, a transition ring 809 is constructed at the large-diameter end of the sludge removal cover 806. Multiple swirling orifices 810 are evenly formed along the circumference of the transition ring 809, and these swirling orifices 810 are all connected to the pressure water chamber 807. In this embodiment, the transition ring 809 is rotatably mounted in the mounting base 802. A water outlet 805 is constructed on the mounting base 802 at a position symmetrical to the water inlet 804. An annular water distribution channel 803 is constructed on the mounting base 802. Both the water inlet 804 and the water outlet 805 are connected to the annular water distribution channel 803 of the mounting base 802, and the annular water distribution channel 803 is connected to the pressure water chamber 807 through each swirling orifice 810. High-pressure cleaning water is pumped by a pressure pump and enters the annular water distribution channel 803 through the inlet connector 804. Then, it enters the pressure water chamber 807 through the vortex port 810. The vortex port 810 causes the cleaning hood 806 to rotate. During this rotation, high-pressure cleaning water is sprayed onto the cable 300 through the flushing hole 811, effectively and efficiently cleaning away sludge and other debris. A portion of the high-pressure cleaning water is discharged from the assembly base 802 through the outlet connector 805, providing the driving force for the rotation of the cleaning hood 806. Furthermore, this embodiment uses a rotating spray cleaning water method to clean the cable 300, ensuring thorough cleaning without blind spots and achieving a significant cleaning effect.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 claims of the present invention.

Claims

1. A cable self-tensioning logging vehicle, characterized in that: The system includes a cable winch mounted on a mounting frame on the logging vehicle body. The cable passes sequentially through a cable dredging mechanism, a guide pulley, a tightening mechanism, and a pneumatic tensioning mechanism before extending into the well. The pneumatic tensioning mechanism is located at the wellhead and seals the wellhead. A bypass pipe connects to the pneumatic tensioning mechanism. The cable dredging mechanism, guide pulley, and tightening mechanism are all connected to the mounting frame. A vertical hydraulic cylinder is installed between the tightening mechanism and the pneumatic tensioning mechanism. The pneumatic tensioning mechanism includes a tightening airbag installed inside an assembly cylinder. The inner peripheral wall of the tightening airbag forms a tightening channel, and the outer peripheral wall of the tightening airbag forms a [missing information - likely a specific shape or structure]. An overflow cavity is formed, and multiple connecting holes are constructed on the compression airbag. Each connecting hole connects the compression channel and the overflow cavity, and the connecting holes are isolated from the inflation cavity of the compression airbag. Multiple strip-shaped protrusions are uniformly constructed along the circumference of the inner peripheral wall of the compression airbag. Each strip-shaped protrusion extends axially to the lower part of the compression airbag, and the lower part of the strip-shaped protrusion smoothly transitions to the inner peripheral wall of the compression airbag via an inclined transition portion. The compression airbag is rotatably connected to the assembly cylinder. A first connecting flange and a second connecting flange are respectively constructed at the upper and lower ends of the compression airbag. Rotatably connected to the upper and lower end faces of the assembly cylinder are... The first rotating disk and the second rotating disk, the first connecting flange and the second connecting flange are respectively adapted to the first rotating disk and the second rotating disk, and multiple fixing screws pass through the first rotating disk and the second rotating disk and connect the first connecting flange and the second connecting flange; the clamping airbag is a trumpet-shaped structure with a gradually expanding diameter in the vertical direction, and the diameter of the clamping channel also gradually expands in the vertical direction; the cable cleaning mechanism includes a mounting base mounted on the mounting frame via support legs, on which a trumpet-shaped cleaning cover is mounted, the cable extends into the cleaning cover through the small diameter end and extends through the large diameter end of the cleaning cover to the cable winch. The cleaning hood has a pressure water chamber, and the inner wall of the cleaning hood is covered with flushing holes that communicate with the pressure water chamber. A water inlet connector is constructed on the mounting base, and the water inlet connector communicates with the pressure water chamber. A transition ring is constructed at the large diameter end of the cleaning hood, and multiple swirling ports that communicate with the pressure water chamber are evenly opened along its circumference on the transition ring. The transition ring is rotatably mounted in the mounting base. A water outlet connector is constructed on the mounting base at a position symmetrical to the water inlet connector. Both the water inlet connector and the water outlet connector communicate with the annular water distribution channel of the mounting base. The annular water distribution channel communicates with the pressure water chamber through the swirling ports.

2. The cable self-tensioning logging vehicle according to claim 1, characterized in that: The tightening mechanism includes an air-expanding sleeve rotatably mounted on a connecting seat, and multiple connecting screws fixed at intervals on the connecting seat. Each connecting screw vertically passes through a corresponding part of the mounting frame, and a connecting nut is threaded onto the part of the connecting screw that extends out of the mounting frame. One end of the vertical hydraulic cylinder is connected to the lower end of the connecting seat, and the other end of the vertical hydraulic cylinder is connected to the upper end of the pneumatic tensioning mechanism.

3. The cable self-tensioning logging vehicle according to claim 1, characterized in that: The assembly cylinder includes a first connecting part, a rotating part, and a second connecting part connected in sequence downwards in a vertical direction. The rotating part is rotatably connected to the first connecting part and the second connecting part. A connecting joint for connecting to a bypass pipe is constructed on the rotating part. The connecting joint is connected to the overflow cavity.

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