Cable cleaning device

Abstract

The invention relates to a cable cleaning device, and belongs to the technical field of cleaning devices. The cable cleaning device comprises a dissolving tank used for containing a dirty oil dissolving solution and a guide mechanism used for guiding a cable into the dirty oil dissolving solution in the dissolving tank and then guiding the cable to a cable scraping and cleaning unit. When the scraping and cleaning unit cleans the logging cable, the guiding mechanism guides the cable into the dissolving tank arranged on the upstream of the scraping and cleaning unit, dirt on the surface of the logging cable is softened and dissolved in the process that the logging cable passes through dirty oil dissolving liquid in the dissolving tank, and finally the scraping and cleaning unit scrapes and cleans the logging cable. Dirt can be well scraped from the surface of the cable, and the cleaning effect of the dirt on the surface of the logging cable is remarkably improved.

Description

Technical Field

[0001] The invention relates to a cable cleaning device, belonging to the technical field of cleaning devices. Background Art

[0002] Currently, oilfields use cable conveying equipment for oxygen activation leak detection, casing change testing, and cable perforation. After the cable is removed from the installation, it is often contaminated by oil, chemicals, or corrosive substances. This not only shortens the service life of the cable itself, but also easily pollutes the ground, posing a significant environmental risk. Therefore, the cable must be cleaned before reeling, and ground contamination must be avoided.

[0003] The prior art discloses a variety of cable cleaning devices that can meet the above-mentioned usage requirements. For example, a Chinese utility model patent with authorization announcement number CN212944226U and authorization announcement date of April 13, 2021 discloses a cable-transmitted perforating cable cleaning device. The device includes a main body, a crossbeam, a recoil device, a scraper plate, and a guide wheel. The main body is respectively fixed with a crossbeam and a recoil device that are perpendicular to each other. The recoil device is connected to a scraper plate shield. The scraper plate shield is fixed to a scraper plate. The scraper plate has a vertical semicircular hole. The guide wheel is connected to the flange at the bottom of the scraper plate, and the rim of the guide wheel is aligned with the semicircular hole of the scraper plate. The two main bodies are connected by a pin, and a circular hole is formed between the two scraper plates. A piercing ring is connected to the inner wall of one of the two main bodies. When in use, the device's main body is secured to the flat surface of the wellhead controller flange. During cable lifting, the scraper blade, propelled by the recoil mechanism, grips the cable, scraping away the oil and water on the cable's surface. This removed oil and water then falls directly into the well, preventing contamination of the ground, tools, and equipment. However, because the dirt attached to the surface of cables used in oilfields is primarily viscous oil, the aforementioned cleaning device struggles to fully remove it, resulting in suboptimal descaling results. Summary of the Invention

[0004] The object of the present invention is to provide a cable cleaning device to solve the problem that the existing cable cleaning device has an unsatisfactory descaling effect on the logging cable.

[0005] In order to achieve the above objectives, the technical solution adopted by the present invention is:

[0006] A cable cleaning device comprises a dissolving tank for containing dirty oil dissolving liquid and a guiding mechanism for guiding the cable into the dirty oil dissolving liquid in the dissolving tank and then guiding the cable to a cable scraping and cleaning unit.

[0007] The guide mechanism includes a guide wheel arranged in the dissolution tank, an introduction wheel used to cooperate with the guide wheel to introduce the cable from outside the dissolution tank into the dirty oil solution in the dissolution tank, and an export wheel used to cooperate with the guide to lead the cable from the dirty oil solution in the dissolution tank out of the dissolution tank and guide it to the cable scraping and cleaning unit.

[0008] Furthermore, the introduction wheel is a brush wheel, which is installed on a support frame through a connecting piece. The support frame and / or the connecting piece exert a force on the brush wheel so that the linear velocity of the bottom of the edge groove when the brush wheel guides the cable is less than the moving speed of the cable bypassing the brush wheel.

[0009] Furthermore, the cable cleaning device also includes a cable scraping and cleaning unit. The cable scraping and cleaning unit includes a housing, an adjusting pressure piece, and a scraping body for scraping and cleaning the cable; the housing is provided with a cable inlet and a cable outlet; the scraping body is disposed within the housing, and both the scraping gel and the adjusting pressure piece are provided with cable channels, and the cable channels of both extend along the same straight line; the adjusting pressure piece is threadedly connected to the housing so that when the cable passes through, the adjusting pressure piece can advance in the extension direction of the cable channel to press and fix the scraping body against the inner wall of the housing, or retreat to release the scraping body and separate the scraping body from the inner wall of the housing.

[0010] Furthermore, the scraping body is a scraping colloid, and the scraping colloid and the inner wall of the shell are respectively provided with matching conical surfaces for matching when the two contact each other. The matching conical surface on the shell extends to the cable inlet and extends and contracts in the direction away from the scraping colloid.

[0011] Furthermore, the scraping body has a petal structure, and the petals of the scraping body together form a cable channel of the scraping body; the matching conical surface on the scraping body that matches the conical surface of the inner wall of the shell is distributed on each petal.

[0012] Furthermore, the adjusting pressure piece includes a pressure transmission column arranged in the shell and a pressure cap threadedly connected to the cable outlet of the shell. The pressure transmission column and the pressure cap are both provided with a central through hole, and the central through holes of the pressure transmission column and the pressure cap together constitute a cable channel on the adjusting pressure piece; the pressure cap is provided with a liquid storage for storing cable curing liquid, and the central through hole of the pressure cap passes through the liquid storage cavity.

[0013] Furthermore, the adjusting pressure piece includes a pressure transmission column arranged in the shell and a pressure cap threadedly connected to the cable outlet of the shell, the pressure transmission column and the pressure cap are both provided with a central through hole, and the central through holes of the pressure transmission column and the pressure cap together constitute a cable channel on the adjusting pressure piece; a limit block is provided on the pressure transmission column, and a spring is sheathed on the outside of the pressure transmission column, and the spring is located on the side of the limit block close to the scraping colloid; when the adjusting pressure piece presses the scraping colloid, one end of the spring rests on the inner wall of the shell, and the other end rests on the limit block.

[0014] Furthermore, the housing is provided with a flushing structure for flushing the inlet of the cable channel on the scraping colloid.

[0015] Furthermore, a flushing liquid guide structure is provided in the shell for guiding the flushing liquid generated after flushing and scraping the cable channel entrance on the colloid to the dissolution tank.

[0016] The cable cleaning device of the present invention improves the existing technology and is particularly suitable for cleaning logging cables. When cleaning the logging cable, the guide mechanism guides the cable into a dissolution tank arranged upstream of the scraping cleaning unit. The dirt on the surface of the logging cable is softened and dissolved during the process of passing through the dirty oil dissolving liquid in the dissolution tank. Finally, the scraping cleaning unit scrapes and cleans the logging cable, which can effectively scrape the dirt off the cable surface and significantly improve the dirt removal effect on the logging cable surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 2 is a longitudinal sectional view of a cable cleaning device according to embodiment 1 of the present invention;

[0018] Figure 2 is a cross-sectional schematic diagram of a cable cleaning device according to embodiment 1 of the present invention;

[0019] Figure 3 This is a schematic diagram of the working of the cable cleaning device of Example 1 of the present invention when lifting the cable;

[0020] Among them, 1-dissolution tank, 2-introduction wheel, 3-first brush wheel, 4-second brush wheel, 5-third brush wheel, 6-drainage outlet, 7-scraping body, 8-central through hole of scraping body, 9-central through hole of pressure transmission column, 10-annular groove, 11-scraping nozzle, 12-pressure transmission column, 13-pressure cap, 14-spring, 15-pin, 16-upper body, 17-lower body, 18-flushing liquid injection hole, 19-flushing liquid drainage surface, 20-drainage channel, 21-liquid storage chamber, 22-sealing rubber core, 23-export wheel, 24-curing liquid injection hole, 25-sealing ring. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below in conjunction with specific implementation methods.

[0022] Example 1

[0023] The cable cleaning device of this embodiment, such as Figure 1 and Figure 2As shown, it includes a dissolution tank 1 for holding the waste oil solution and a scraping cleaning unit. An introduction wheel 2 is arranged above the dissolution tank 1. The installation frame of the introduction wheel is arranged on the groove edge of one side of the dissolution tank, and a shell installation hole is arranged on the groove wall of the other side of the dissolution tank 1. The dissolution tank 1 is provided with a first brush wheel 3, a second brush wheel 4 and a third brush wheel 5. When cleaning the cable, the introduction wheel 2 can cooperate with the three brush wheels to guide the cable into the waste oil solution in the dissolution tank 1. The three brush wheels are all installed on the brush wheel installation frame set at the bottom of the tank by bolts. The bolts apply a certain pre-tightening force to the brush wheels so that the linear velocity of the cable passing around the brush wheels is greater than the linear velocity of the groove bottom of the brush wheel edge, so that the brush wheels can brush the cable when the cable passes around the brush wheels. The bottom of the dissolution tank 1 is provided with a drain port, which can discharge the waste oil solution in the dissolution tank 1 when the waste oil solution is replaced. In other embodiments of the cable cleaning device of the present invention, any one or two of the first brush wheel 3, the second brush wheel 4 and the third brush wheel 5 can be omitted, which can reduce the resistance encountered during the cable cleaning process.

[0024] The scraping cleaning unit includes a shell, a scraping colloid 7, a pressure transmission column 12 and a pressure cap 13; the shell is threadedly connected to the shell mounting hole of the dissolution tank 1; in other embodiments, the shell can also be connected to the shell mounting hole of the dissolution tank 1 through a flange. A cable inlet and a cable outlet are provided on the shell, and the cable inlet is connected to the dissolution tank 1 through the shell mounting hole; a guide wheel 23 is provided at the cable inlet of the shell, and the guide wheel 23 can cooperate with the brush wheel to guide the cable that bypasses the third brush wheel 5 to the scraping colloid 7, and the introduction wheel 2, the first brush wheel 3, the second brush wheel 4, the third brush wheel 5 and the guide wheel 23 are arranged on the same plane, and the introduction wheel 2, the first brush wheel 3, the second brush wheel 4, the third brush wheel 5 and the guide wheel 23 together constitute the guiding mechanism of the cable cleaning device; the scraping colloid 7, the pressure transmission column 12 and the pressure cap 13 are arranged in sequence from the cable inlet to the cable outlet, and the scraping colloid 7 and the pressure transmission column 12 are arranged in the shell;

[0025] The scraping colloid 7 is provided with a central through hole 8 as a cable channel, and the extension line of the central through hole 8 is tangent to the bottom of the groove of the edge of the guide wheel 23; the scraping colloid 7 and the inner wall of the shell are respectively provided with matching conical surfaces (the matching conical surfaces are conical surfaces) for matching when the scraping colloid 7 and the shell are in contact, and the matching conical surface on the scraping colloid 7 extends and contracts toward the cable entrance, and the matching conical surface on the shell extends to the cable entrance and the matching conical surface extends and contracts in the direction away from the scraping colloid 7; the scraping colloid 7 is a petal structure, and the matching conical surfaces on the scraping colloid 7 and the shell are distributed on each petal (this embodiment is a 4-petal structure), and the petals enclose the central through hole 8 and each petal forms a scraping mouth 11 at one end of the central through hole 8 close to the cable entrance; the scraping mouth 11 can be a bell mouth.

[0026] The pressure transmission column 12 and the pressure cap 13 are also provided with a central through hole serving as a cable channel, one end of the pressure transmission column 12 is an extrusion surface, and the other end is a top pressure surface; the central through hole of the pressure cap 13 passes through the liquid storage chamber 21, and the central through hole 8 of the scraping colloid 7, the central through hole 9 of the pressure transmission column 12, and the central through hole 9 of the pressure cap 13 extend along the same straight line. A space for the scraping colloid 7 and the pressure transmission column 12 to move in the extension direction of the cable channel is provided in the shell; the cable outlet is provided with an internal thread, and the pressure cap 13 is threadedly connected to the cable outlet of the shell. When the cable passes through, the pressure cap 13 is screwed to make it move forward to press one end of the pressure transmission column 12 so that the other end of the pressure transmission column 12 squeezes the scraping colloid 7, thereby pressing the scraping colloid 7 and the matching conical surface of the shell tightly and covering the cable to achieve scraping and cleaning of the cable during the movement of the cable to the cable outlet, or the pressure cap 13 is screwed back to loosen the pressure transmission column 12 so that the scraping colloid 7 is separated from the matching conical surface of the shell. The scraping colloid 7 of this embodiment has a petal structure, so that by adjusting the screwing depth of the pressure cap 13 on the housing, the size of the cable channel when the scraping colloid 7 covers the cable can be adjusted, so that the cable cleaning device of this embodiment is suitable for cleaning cables of different sizes. When the pressure transmission column 12 presses the scraping colloid 7, it cooperates with the conical surface of the scraping colloid 7 (the cooperating conical surface is a conical surface), and the apex of the cooperating conical surface on the pressure transmission column 12 extends and contracts in the direction away from the scraping colloid 7. The contact surface of the pressure transmission column 12 when cooperating with the conical surface of the scraping colloid 7 includes the cooperating conical surface and the plane intersecting with each cooperating conical surface. The cooperating conical surface of the scraping colloid 7 with the pressure transmission column 13 is distributed on each petal.

[0027] The pressure cap 13 is provided with a curing liquid injection hole 24 that extends through the liquid storage chamber 21. Cable curing liquid can be injected into the liquid storage chamber 21, achieving simultaneous cable cleaning and curing. Sealant cores 22 are provided at both ends of the liquid storage chamber 21. These sealant cores 22 are provided with cable passage holes. These sealant cores 22 prevent leakage of the cable curing liquid from the liquid storage chamber 21 as the cable passes through the liquid storage chamber 21. In another embodiment of the cable cleaning device of the present invention, the injection hole on the pressure cap 13 can be omitted. Instead, the sealant core 22 at one end of the liquid storage chamber 21 is sealed, and cable curing liquid is injected through the other end before the sealant core 22 is installed.

[0028] The pressure transmission column 12 is provided with a limit block surrounding the pressure transmission column 12, and the pressure transmission column 12 is provided with a spring 14. The spring 14 is located on the side of the limit block 12 close to the scraping colloid 7. The inner wall of the shell is provided with an annular groove 10 for accommodating the spring 14 and providing space for the limit block 12 to move when the pressure transmission column 12 moves in the direction extending along the central through hole 9. When the pressure transmission column 12 presses the scraping colloid 7, one end of the spring rests on the groove wall of the annular groove 10, and the other end rests on the limit block. When the pressure cap 13 is screwed back after the cable cleaning is completed and the pressure transmission column 12 is released, the spring 14 can push the pressure block 12 back to release the scraping colloid 7. In other embodiments of the cable cleaning device of the present invention, the spring mounted on the pressure transmission column can also be omitted. In this case, the friction force of the cable on the pressure transmission column 12 can be relied upon to move the cable a certain distance in the opposite direction of the movement direction during cleaning so that the pressing piece returns to its initial position where no pressing pressure is applied.

[0029] The housing is a split structure, including an upper body 16 and a lower body 17. The upper body 16 and the lower body 17 are detachably connected by a pin 15. The upper body 16 and the lower body 17 are both provided with external threads for threaded connection with the housing mounting hole. A flushing liquid injection hole 18 is provided on the upper body 16. The flushing liquid injection hole 18 serves as a flushing structure. During the scraping and cleaning process, flushing liquid is released through the flushing liquid injection hole 18 to the cable channel entrance of the scraping colloid 7 to flush away dirt retained on the scraping colloid during the scraping process. In some embodiments of the present invention, a plurality of cleaning nozzles are provided on the upper body, evenly distributed circumferentially around the scraping nozzle 11 of the scraping colloid 7. These cleaning nozzles serve as a flushing structure to better flush away dirt retained on the scraping nozzle 11. In other embodiments of the present invention, only one cleaning nozzle may be provided on the upper body directly above the scraping nozzle 11.

[0030] The lower body 17 is provided with a flushing liquid drainage surface 19, which extends obliquely downward from below the scraping nozzle 11 to the edge of the lower body on the side connected to the dissolution tank. This surface can drain the flushing liquid after rinsing the oil scraping nozzle 11 into the dissolution tank 1. The lower body 17 is also provided with a drainage channel 20. The inlet of the drainage channel 20 is located between the matching conical surface of the lower body 17 and the scraping colloid 7 and the annular groove 10. The drainage channel 20 extends obliquely downward from the inlet to the flushing liquid drainage surface 19. A sealing ring 25 is provided between the pressure transmission column 12 and the inner wall of the housing. The sealing ring 25 is located on the inner wall of the housing between the inlet of the drainage channel 20 and the annular groove 10.

[0031] When the cable cleaning device of this embodiment is used, it is placed at the wellhead. When lifting the cable, the cable is first passed through the introduction wheel 2 and then passed from the bottom of the first brush wheel 3, the top of the second brush wheel 4, and the bottom of the third brush wheel 5 in sequence. Then, the cable is guided to the scraping cleaning unit through the lead-out wheel 23, and the cable is passed through the central through hole 8 of the scraping colloid 7, the central through hole 9 of the pressure transmission column 12, and the liquid storage chamber 21 in sequence. Then, the screwing length of the pressure cap 13 in the shell is adjusted to make the pressure transmission column 12 squeeze the scraping colloid 7. After the scraping colloid 7 is squeezed, the petals gather together and cover the cable. Then, the shell is connected to the dissolution tank 1, as shown. Figure 3 As shown; then, add the dirty oil dissolving liquid into the dissolving tank 1 and make the dirty oil dissolving liquid submerge the cable wrapped around the three brush wheels, then use the traction device to pull the cable passing through the pressure cap 13 to pull the cable out of the well. During this process, the cable is brushed by the first brush wheel 3, the second brush wheel 4 and the third brush wheel 5 in the dissolving tank 1 to complete the preliminary cleaning of the dirt. Then, when the cable passes through the scraping colloid 7, the scraping nozzle 11 scrapes the dirt on the surface of the cable. During the descaling process, the scraping nozzle flushing injection hole 18 releases the flushing liquid to flush the dirt accumulated in front of the scraping nozzle 11. The flushing liquid flows into the dissolving tank 1 along the flushing liquid drainage surface 19. The flushing liquid flowing to the annular groove 10 on the inner wall of the shell also flows into the dissolving liquid tank 1 through the sewage discharge channel 20. After being cleaned by the scraping colloid 7, the cable passes through the pressure transmission column 12 and the pressure cap 13 in turn. In the process of passing through the liquid storage chamber 21, a layer of maintenance liquid is coated on the surface of the cable to achieve cable immersion maintenance.

[0032] Example 2

[0033] The cable cleaning device of this embodiment differs from the cable cleaning device of Example 1 in that: the scraping colloid 7 and the pressure-transmitting column 12 of this embodiment cooperate with each other in a planar manner, i.e., when the pressure-transmitting column 12 squeezes the scraping colloid 7, the contact surfaces of the two are both planar. Furthermore, this embodiment does not include a scraping nozzle flushing liquid injection hole 18 on the upper body 16 of the housing. Instead, a flushing pipe is introduced in front of the scraping nozzle 11 through a threaded connection provided on the side wall of the cleaning tank 1 to flush the scraping nozzle. Furthermore, this embodiment does not include a drain channel 20 on the lower body 17 of the housing. After cleaning, the housing is disassembled and the upper and lower bodies are separated, and the liquid remaining in the lower body 17 is poured out.

[0034] Example 3

[0035] The cable cleaning device of this embodiment is different from the cable cleaning device of Example 1 only in that: in the cable cleaning device of this embodiment, the scraping colloid 7 is integrally formed, and the elasticity of the scraping colloid 7 is directly used to squeeze the scraping colloid 7 on the pressure transmission column 12 to reduce the size of the central through hole 8 on the scraping colloid 7 to cover the cable, the pressure cap 13 and the pressure transmission column 12 are integrated, and since the two are integrated, there is no need to set a sealing rubber core at the connection position between the two, and the sealing rubber core on the other side can be omitted. During the process of cleaning the cable, the cable curing liquid is continuously dripped into the liquid storage 21 through the curing liquid injection hole 24 to achieve cable curing; in addition, this embodiment does not set a limit block and a set spring 14 outside the pressure transmission column 12. After the cable is cleaned, the pressure cap 13 can be directly unscrewed outward to simultaneously drive the pressure transmission column 12 to move.

Claims

1. A cable cleaning device, characterized in that: The utility model comprises a dissolving tank for containing dirty oil dissolving liquid and a guiding mechanism for guiding the cable into the dirty oil dissolving liquid in the dissolving tank and then guiding the cable into the cable scraping and cleaning unit.

2. The cable cleaning device according to claim 1, characterized in that: The guide mechanism includes a guide wheel arranged in the dissolution tank, an introduction wheel used to cooperate with the guide wheel to introduce the cable from outside the dissolution tank into the dirty oil solution in the dissolution tank, and an export wheel used to cooperate with the guide wheel to lead the cable from the dirty oil solution in the dissolution tank out of the dissolution tank and guide it to the cable scraping and cleaning unit.

3. The cable cleaning device according to claim 1 or 2, characterized in that: The guide wheel is a brush wheel, which is installed on a support frame through a connecting piece. The support frame and / or the connecting piece exert a force on the brush wheel so that the linear speed of the bottom of the edge groove when the brush wheel guides the cable is less than the moving speed of the cable bypassing the brush wheel.

4. The cable cleaning device according to claim 1, wherein: It also includes a cable scraping and cleaning unit, which includes a shell, an adjusting pressure piece and a scraping body for scraping and cleaning the cable; the shell is provided with a cable inlet and a cable outlet; the scraping body is arranged in the shell, and the scraping body and the adjusting pressure piece are both provided with cable channels and the cable channels of the two extend along the same straight line; the adjusting pressure piece is threadedly connected to the shell, so that the adjusting pressure piece can move forward in the extension direction of the cable channel when the cable passes through to press the scraping body to fix it on the inner wall of the shell, or move backward to loosen the scraping body to separate the scraping body from the inner wall of the shell.

5. The cable cleaning device according to claim 4, characterized in that: The scraping body is a scraping colloid. The scraping colloid and the inner wall of the shell are respectively provided with matching conical surfaces for matching when the two come into contact. The matching conical surface on the shell extends to the cable inlet and extends and contracts in the direction away from the scraping colloid.

6. The cable cleaning device according to claim 5, characterized in that: The scraping body has a petal structure, and the petals of the scraping body are combined to form a cable channel of the scraping body; the matching conical surface of the scraping body that matches the conical surface of the inner wall of the shell is distributed on each petal.

7. The cable cleaning device according to claim 4, 5 or 6, characterized in that: The regulating pressure piece includes a pressure transmission column arranged in the shell and a pressure cap threadedly connected to the cable outlet of the shell. The pressure transmission column and the pressure cap are both provided with a central through hole. The central through holes of the pressure transmission column and the pressure cap together constitute a cable channel on the regulating pressure piece; a liquid storage for storing cable curing liquid is provided in the pressure cap, and the central through hole of the pressure cap passes through the liquid storage cavity.

8. The cable cleaning device according to claim 4, 5 or 6, characterized in that: The adjusting pressure piece includes a pressure transmission column arranged in the shell and a pressure cap threadedly connected to the cable outlet of the shell, the pressure transmission column and the pressure cap are both provided with a central through hole, and the central through holes of the pressure transmission column and the pressure cap together constitute a cable channel on the adjusting pressure piece; a limit block is provided on the pressure transmission column, and a spring is sheathed on the outside of the pressure transmission column, and the spring is located on the side of the limit block close to the scraping colloid; when the adjusting pressure piece presses the scraping colloid, one end of the spring rests on the inner wall of the shell, and the other end rests on the limit block.

9. The cable cleaning device according to claim 4, 5 or 6, characterized in that: The housing is provided with a flushing structure for flushing the inlet of the cable channel on the scraping colloid.

10. The cable cleaning device according to claim 9, characterized in that: The shell is provided with a flushing liquid guide structure for guiding the flushing liquid generated after flushing and scraping the cable channel entrance on the colloid to the dissolution tank.

Images