Underground cable fixing device

Abstract

The utility model relates to an underground cable fixing device, which comprises a fixing seat, a cable fixer and a mounting bracket, the fixing seat is used for being fixed on a well wall, the cable fixer is configured to allow a cable to pass through and clamp the cable, the mounting bracket is movably connected to the fixing seat along the extension direction of the cable, and the cable fixer is mounted on the mounting bracket. The underground cable fixing device can reliably fix the cable and can move along with thermal expansion and cold contraction of the underground cable, even if the underground cable is subjected to thermal expansion and cold contraction, the cable does not move relative to the cable fixing device, and the cable fixing device can be used for fixing the cable. Therefore, the cable fixing device does not damage the cable when the cable expands with heat and contracts with cold (for example, the insulating skin of the cable is damaged), the service life of the cable is effectively prolonged, and the safety of underground operation is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of downhole cable fixing, and in particular to a downhole cable fixing device. Background Art

[0002] Underground operations require a large amount of equipment, such as lighting equipment, ventilation equipment, mining equipment, and communications. Therefore, a large number of cables need to be laid underground to achieve underground power supply and signal transmission.

[0003] In related technologies, cables are usually fixed directly to the well wall through fixings. However, as the depth of the well increases, the temperature underground changes greatly, especially near the wellhead. The temperature varies greatly from the external ambient temperature. The cables are prone to thermal expansion and contraction under the action of changing temperatures. Since the fixings are fixedly connected to the well wall, the cables that expand and contract easily rub against the fixed fixings, causing damage to the insulation layer (skin) on the cable surface, and even causing leakage of the cable, resulting in underground explosions, and low safety. Utility Model Content

[0004] The purpose of the present disclosure is to provide a downhole cable fixing device to solve the above technical problems.

[0005] In order to achieve the above objectives, the present disclosure provides a downhole cable fixing device, comprising:

[0006] A fixing seat, used for fixing on the well wall;

[0007] a cable holder configured to allow a cable to pass through and to clamp the cable;

[0008] The mounting bracket is movably connected to the fixing seat along the extending direction of the cable, and the cable holder is mounted on the mounting bracket.

[0009] Optionally, the downhole cable fixing device further comprises a slider, the fixing seat is provided with a sliding groove, and the extending direction of the sliding groove is the same as the extending direction of the cable;

[0010] The sliding block is slidably matched with the sliding groove, and the mounting bracket is connected to the sliding block.

[0011] Optionally, a threaded hole is provided on the sliding block, an external thread is provided at one end of the mounting bracket, and the mounting bracket is threadedly connected to the threaded hole.

[0012] Optionally, the downhole cable fixing device also includes two elastic members, which are respectively arranged on both sides of the slider, one end of each elastic member abuts against the side of the slider, and the other end of each elastic member abuts against the groove wall of the sliding groove.

[0013] Optionally, the fixing seat includes a fixing seat body and a sliding rod, the sliding groove is formed on the fixing seat body, the sliding rod is arranged in the sliding groove, and both ends of the sliding rod are connected to the groove wall of the sliding groove;

[0014] The sliding block is movably sleeved on the sliding rod, and the two elastic members are both sleeved on the sliding rod.

[0015] Optionally, the cable holder includes a first fixing portion, a second fixing portion, a first connecting portion, and a second connecting portion, wherein the first fixing portion and the second fixing portion are arranged opposite to each other, and the first fixing portion and the second fixing portion are used to jointly clamp the cable;

[0016] The first fixing portion is adjustably connected to the mounting bracket via the first connecting portion, and the second fixing portion is adjustably connected to the mounting bracket via the second connecting portion.

[0017] Optionally, the mounting bracket is formed as a threaded rod, and the downhole cable fixing device further includes a first fastening nut and a second fastening nut, the first connecting part and the second connecting part are both movably passed through the threaded rod, the first fastening nut and the second fastening nut are both threadedly connected to the threaded rod, the first fastening nut is used to abut against the side of the first connecting part away from the second connecting part, and the second fastening nut is used to abut against the side of the second connecting part away from the first connecting part.

[0018] Optionally, there are two first fixing parts, the two first fixing parts are located on both sides of the mounting bracket, and the two first fixing parts are connected to the same first connecting part;

[0019] There are two second fixing parts, the two second fixing parts are located on both sides of the mounting bracket, and the two second fixing parts are connected to the same second connecting part.

[0020] Optionally, the first fixing portion is a first arc-shaped plate with an opening facing the second fixing portion, and the second fixing portion is a second arc-shaped plate with an opening facing the first fixing portion.

[0021] Optionally, the cable holder further includes a first anti-slip pad and a second anti-slip pad, the first anti-slip pad being arranged on a surface of the first fixing portion close to the second fixing portion, the second anti-slip pad being arranged on a surface of the second fixing portion close to the first fixing portion, and both the first anti-slip pad and the second anti-slip pad being used to contact the cable.

[0022] With the above technical solution, since the mounting bracket is movably connected to the fixing seat along the extension direction of the cable, the cable holder mounted on the mounting bracket can move with the mounting bracket. Therefore, if the cable expands or contracts due to temperature fluctuations, the cable holder, which clamps the cable, can move along with the cable, and the position of the cable holder can change with the expansion and contraction of the cable. In other words, even if the length of the cable changes due to thermal expansion and contraction, the position of the cable holder can move with the cable, without friction with the cable. In other words, the downhole cable fixing device provided by the present disclosure can both reliably secure the cable and move with the thermal expansion and contraction of the downhole cable. Even if the downhole cable expands or contracts, the cable does not move relative to the cable holder. Therefore, the cable holder will not damage the cable (e.g., damage the cable insulation) during thermal expansion and contraction, effectively extending the service life of the cable and improving the safety of downhole operations.

[0023] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of a downhole cable fixing device provided by an exemplary embodiment of the present disclosure.

[0026] Figure 2 is a schematic diagram of the three-dimensional structure of a downhole cable fixing device provided by an exemplary embodiment of the present disclosure, and Figure 1 Different perspective.

[0027] Figure 3 1 is a side schematic diagram of a downhole cable fixing device provided by an exemplary embodiment of the present disclosure.

[0028] Figure 4 1 is a side schematic view of a downhole cable fixing device provided by another exemplary embodiment of the present disclosure.

[0029] Description of Reference Numerals

[0030] 100-downhole cable fixing device; 1-fixing seat; 11-sliding groove; 12-fixing seat body; 13-sliding rod; 2-cable holder; 21-first fixing part; 22-second fixing part; 23-first connecting part; 24-second connecting part; 3-mounting bracket; 4-slider; 5-elastic member; 6-first fastening nut; 7-second fastening nut; 8-first anti-slip pad; 9-second anti-slip pad. DETAILED DESCRIPTION

[0031] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0032] In the present disclosure, it should be understood that the directional words used, such as "upper" and "lower", are defined based on the drawing directions of the accompanying drawings. They are only for the convenience of describing the present disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation structure and operation. Therefore, they cannot be understood as limitations on the present disclosure. The terms "inside" and "outside" refer to the inside and outside of the corresponding structural outline. In addition, it should be noted that the terms used, such as "first" and "second", are used to distinguish one element from another and do not have sequentiality or importance. In addition, in the description of the reference drawings, the same mark in different drawings represents the same element.

[0033] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "connected," "connected," and "installed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; and they may refer to direct connections or indirect connections via an intermediary. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0034] like Figures 1 to 4 As shown, the present disclosure provides a downhole cable fixing device 100, including a fixing seat 1, a cable holder 2 and a mounting bracket 3. The fixing seat 1 is used to be fixed on the well wall. The cable holder 2 is constructed to allow the cable to pass through and clamp the cable. The mounting bracket 3 is movably connected to the fixing seat 1 along the extension direction of the cable. The cable holder 2 is installed on the mounting bracket 3.

[0035] When the above-mentioned downhole cable fixing device 100 is used to fix downhole cables, the operator can fix the fixing seat 1 on the well wall underground, and install the cable fixer 2 on the fixing seat 1 through the mounting bracket 3, and then clamp the cable to be laid in the cable fixer 2, so as to achieve the fixation of the downhole cable, and the fixation of the downhole cable is more convenient.

[0036] Through the above technical solution, since the mounting bracket 3 is movably connected to the fixing base 1 along the extension direction of the cable, the cable holder 2 mounted on the mounting bracket 3 can move with the mounting bracket 3. Therefore, if the cable expands or contracts due to temperature fluctuations, the cable holder 2, which holds the cable, can move along with the cable, and the position of the cable holder 2 can change with the expansion and contraction of the cable. In other words, even if the length of the cable changes due to thermal expansion and contraction, the position of the cable holder 2 can move with the cable without rubbing against it. In other words, the downhole cable fixing device 100 provided by the present disclosure can both reliably secure the cable and move with the thermal expansion and contraction of the downhole cable. Even if the downhole cable expands or contracts, the cable does not move relative to the cable holder 2. Therefore, the cable holder 2 will not damage the cable (e.g., damage the cable insulation) during thermal expansion and contraction, effectively extending the service life of the cable and improving the safety of downhole operations.

[0037] The present disclosure does not limit the specific connection method between the mounting bracket 3 and the fixing base 1, as long as the mounting bracket 3 can move with the thermal expansion and contraction of the cable, as an embodiment of the present disclosure, Figure 2 As shown, the downhole cable fixing device 100 further includes a slider 4. The fixing base 1 is provided with a sliding groove 11. The sliding groove 11 extends in the same direction as the cable. The slider 4 slidably engages with the sliding groove 11, and the mounting bracket 3 is connected to the slider 4. Because the sliding groove 11 provided on the fixing base 1 extends in the same direction as the cable, when the cable expands and contracts due to heat, the slider 4 moves in the same direction as the cable, thereby preventing friction between the cable holder 2 and the cable.

[0038] In addition, since the slider 4 slides in conjunction with the sliding groove 11, in other words, the side walls of the sliding groove 11 can cooperate with the outer wall of the slider 4, the sliding groove 11 can limit the lateral movement of the slider 4 (i.e., the direction perpendicular to the extension direction of the cable), and the cable holder 2 can only move along the extension direction of the cable without shaking left and right, thereby achieving a better cable fixing effect.

[0039] As another embodiment of the present disclosure, the downhole cable fixing device 100 may further include a guide rail and a pulley. The guide rail is disposed on the side of the fixing base 1 away from the well wall. The pulley is slidably connected to the guide rail, and the mounting bracket 3 is connected to the pulley. In this way, when the cable expands and contracts due to heat or cold, the cable holder 2 can also move under the influence of the cable.

[0040] With respect to the embodiment in which the downhole cable fixing device 100 further includes a slider 4 and a sliding groove 11 is provided on the fixing seat 1, the present disclosure does not limit the specific connection relationship between the mounting bracket 3 and the slider 4, as long as the mounting bracket 3 can be reliably mounted on the slider 4. As an embodiment of the present disclosure, a threaded hole is provided on the slider 4, one end of the mounting bracket 3 is provided with an external thread, and the mounting bracket 3 is threadedly connected to the threaded hole. The threaded connection between the mounting bracket 3 and the slider 4 is better and less likely to loosen.

[0041] In addition, if the slider 4 and / or the mounting bracket 3 is damaged, the operator does not need to replace the entire cable fixing device 100, but only needs to replace the damaged parts to repair the downhole cable fixing device 100, and the use cost of the downhole cable fixing device 100 is low.

[0042] In other embodiments, the mounting bracket 3 may also be connected to the slider 4 by welding or clamping.

[0043] In order to further improve the fixing effect of the downhole cable fixing device 100 on the downhole cable, optionally, as Figure 2 As shown, the downhole cable fixing device 100 also includes two elastic members 5, which are respectively arranged on both sides of the slider 4, with one end of each elastic member 5 abutting against the side surface of the slider 4, and the other end of each elastic member 5 abutting against the groove wall of the sliding groove 11. Since the elastic members 5 are provided on both sides of the slider 4, and the two ends of the elastic members 5 abut against the groove wall of the sliding groove 11 and the side wall of the slider 4, respectively, during use, if the downhole cable fixing device 100 is affected by external vibrations, etc., causing the slider 4 to have a tendency to move, the elastic members 5 can apply an elastic force to the slider 4 that is opposite to the movement trend of the slider 4, thereby preventing the slider 4 from being displaced. In other words, the two elastic members 5 can jointly limit the slider 4, and the slider 4 is not easily shaken by vibrations, further improving the fixing effect of the downhole cable fixing device 100 on the downhole cable.

[0044] It should be noted that the present disclosure does not limit the specific type of the elastic member 5. The elastic member 5 can be any elastic member 5 suitable for the downhole working environment. For example, as an embodiment of the present disclosure, the elastic member 5 can be a spring.

[0045] As another embodiment of the present disclosure, the elastic member 5 may also be an insulating elastic block or the like.

[0046] In the present disclosure, the slider 4 can be directly installed in the sliding groove 11, and the slider 4 can also be indirectly installed in the sliding groove 11. As an embodiment of the present disclosure, Figure 2As shown, the fixed base 1 includes a fixed base body 12 and a slide rod 13. The slide groove 11 is formed on the fixed base body 12. The slide rod 13 is disposed in the slide groove 11. The two ends of the slide rod 13 are connected to the groove walls of the slide groove 11. The slider 4 is movably mounted on the slide rod 13. The two elastic members 5 are both mounted on the slide rod 13. The slide rod 13 can simultaneously limit the slider 4 and the elastic member 5.

[0047] On the one hand, the slider 4 mounted on the slide rod 13 is not easy to disengage from the sliding groove 11, and the slider 4 can always be installed in the sliding groove 11, effectively avoiding the slider 4 from disengaging and causing the cable to loosen; on the other hand, the elastic member 5 can also always be pressed between the slider 4 and the sliding groove 11, effectively avoiding the elastic member 5 from disengaging, causing the slider 4 to be easily affected by external vibrations and the like and shake in the sliding groove 11.

[0048] The present disclosure does not limit the specific structure of the cable holder 2. As an embodiment of the present disclosure, Figure 3 and Figure 4 As shown, the cable holder 2 includes a first fixing portion 21, a second fixing portion 22, a first connecting portion 23, and a second connecting portion 24. The first fixing portion 21 and the second fixing portion 22 are arranged opposite each other and are used to jointly clamp a cable. The first fixing portion 21 is adjustably connected to the mounting bracket 3 via the first connecting portion 23, and the second fixing portion 22 is adjustably connected to the mounting bracket 3 via the second connecting portion 24. The oppositely arranged first fixing portion 21 and the second fixing portion 22 can jointly clamp the cable, effectively securing the cable to the cable holder 2 and preventing it from falling.

[0049] Furthermore, because the first fixing portion 21 is adjustably connected to the mounting bracket 3 via the first connecting portion 23, and the second fixing portion 22 is adjustably connected to the mounting bracket 3 via the second connecting portion 24, this design allows, on the one hand, the relative distance between the first fixing portion 21 and the second fixing portion 22 to be adjusted by adjusting the positions of the first connecting portion 23 and the second connecting portion 24 on the mounting bracket 3, thereby enabling the cable holder 2 to secure a varying number of cables. Furthermore, by adjusting the positions of the first connecting portion 23 and the second connecting portion 24 on the mounting bracket 3, the overall installation position of the cable holder 2 on the mounting bracket 3 can also be adjusted, thereby enabling the cable holder 2 to meet the complex installation requirements of underground mines.

[0050] In order to fix the first fixing portion 21 and the second fixing portion 22 on the mounting bracket 3, optionally, as shown in FIG. Figures 2 to 4As shown, the mounting bracket 3 is formed as a threaded rod, and the downhole cable fixing device 100 further includes a first fastening nut 6 and a second fastening nut 7. The first connecting portion 23 and the second connecting portion 24 are both movably provided on the threaded rod. The first fastening nut 6 and the second fastening nut 7 are both threadedly connected to the threaded rod. The first fastening nut 6 is used to abut against the side of the first connecting portion 23 away from the second connecting portion 24, and the second fastening nut 7 is used to abut against the side of the second connecting portion 24 away from the first connecting portion 23. In other words, the first fixing portion 21 and the second fixing portion 22 are clamped between the first fastening nut 6 and the second fastening nut 7. Only two nuts are needed to fix the first fixing portion 21 and the second fixing portion 22 to the mounting bracket 3. This helps to simplify the structure of the entire downhole cable fixing device 100, reduce the cost of the downhole cable fixing device 100, and improve the time and efficiency of downhole cable laying.

[0051] Alternatively, as Figure 4 As shown, there are two first fixing portions 21, located on either side of the mounting bracket 3, connected to the same first connecting portion 23. There are two second fixing portions 22, located on either side of the mounting bracket 3, connected to the same second connecting portion 24. Thus, the two first fixing portions 21 and the two second fixing portions 22 located on either side of the mounting bracket 3 cooperate with each other and can both be used to secure cables. The cable holder 2 can secure a large number of cables, requiring only one cable holder 2. This helps reduce the number of cable holders 2 used when laying cables underground, making the cable holder 2 highly practical.

[0052] The present disclosure does not limit the specific structures of the first fixing portion 21 and the second fixing portion 22. As an embodiment of the present disclosure, Figures 1 to 4 As shown, the first fixing portion 21 is a first curved plate with an opening toward the second fixing portion 22, and the second fixing portion 22 is a second curved plate with an opening toward the first fixing portion 21. The curved shapes of the first and second fixing portions 21, 22 increase the contact area between the first and second fixing portions 21, 22 and the cable, thereby improving the cable securing effect of the cable holder 2.

[0053] In addition, since the arc-shaped openings of the first fixing portion 21 and the second fixing portion 22 are arranged relative to each other, when the cable is arranged between the first fixing portion 21 and the second fixing portion 22, the first fixing portion 21 and the second fixing portion 22 can jointly enclose the cable, and the cable is not easy to fall from the gap between the first fixing portion 21 and the second fixing portion 22.

[0054] In order to further improve the protection effect of the downhole cable, optionally, as Figures 1 to 4As shown, the cable holder 2 further includes a first anti-slip pad 8 and a second anti-slip pad 9. The first anti-slip pad 8 is disposed on a surface of the first fixing portion 21 near the second fixing portion 22, and the second anti-slip pad 9 is disposed on a surface of the second fixing portion 22 near the first fixing portion 21. Both the first anti-slip pad 8 and the second anti-slip pad 9 are configured to contact the cable. The first anti-slip pad 8 and the second anti-slip pad 9 prevent the cable from slipping, thereby improving the cable fixing effect. The first anti-slip pad 8 and the second anti-slip pad 9 also provide flexible contact with the cable, further preventing the cable from being worn by the cable holder 2.

[0055] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0057] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A downhole cable fixing device, characterized in that: include: A fixing seat, used for fixing on the well wall; a cable holder configured to allow a cable to pass through and to clamp the cable; The mounting bracket is movably connected to the fixing seat along the extending direction of the cable, and the cable holder is mounted on the mounting bracket.

2. The downhole cable fixing device according to claim 1, characterized in that: The downhole cable fixing device further comprises a slider, the fixing seat is provided with a sliding groove, and the extending direction of the sliding groove is the same as the extending direction of the cable; The sliding block is slidably matched with the sliding groove, and the mounting bracket is connected to the sliding block.

3. The downhole cable fixing device according to claim 2, characterized in that: A threaded hole is provided on the sliding block, an external thread is provided on one end of the mounting bracket, and the mounting bracket is threadedly connected to the threaded hole.

4. The downhole cable fixing device according to claim 2, characterized in that: The downhole cable fixing device also includes two elastic members, which are respectively arranged on both sides of the slider, one end of each elastic member abuts against the side of the slider, and the other end of each elastic member abuts against the groove wall of the sliding groove.

5. The downhole cable fixing device according to claim 4, characterized in that: The fixing seat includes a fixing seat body and a sliding rod, the sliding groove is formed on the fixing seat body, the sliding rod is arranged in the sliding groove, and both ends of the sliding rod are connected to the groove wall of the sliding groove; The sliding block is movably sleeved on the sliding rod, and the two elastic members are both sleeved on the sliding rod.

6. The downhole cable fixing device according to any one of claims 1 to 5, characterized in that: The cable holder includes a first fixing portion, a second fixing portion, a first connecting portion, and a second connecting portion, wherein the first fixing portion and the second fixing portion are arranged opposite to each other and are used to jointly clamp the cable; The first fixing portion is adjustably connected to the mounting bracket via the first connecting portion, and the second fixing portion is adjustably connected to the mounting bracket via the second connecting portion.

7. The downhole cable fixing device according to claim 6, characterized in that: The mounting bracket is formed as a threaded rod, and the downhole cable fixing device also includes a first fastening nut and a second fastening nut. The first connecting part and the second connecting part are both movably inserted into the threaded rod. The first fastening nut and the second fastening nut are both threadedly connected to the threaded rod. The first fastening nut is used to abut against the side of the first connecting part away from the second connecting part, and the second fastening nut is used to abut against the side of the second connecting part away from the first connecting part.

8. The downhole cable fixing device according to claim 6, characterized in that: There are two first fixing parts, the two first fixing parts are located on both sides of the mounting bracket, and the two first fixing parts are connected to the same first connecting part; There are two second fixing parts, the two second fixing parts are located on both sides of the mounting bracket, and the two second fixing parts are connected to the same second connecting part.

9. The downhole cable fixing device according to claim 6, characterized in that: The first fixing portion is a first arc-shaped plate with an opening facing the second fixing portion, and the second fixing portion is a second arc-shaped plate with an opening facing the first fixing portion.

10. The downhole cable fixing device according to claim 6, characterized in that: The cable holder also includes a first anti-slip pad and a second anti-slip pad, the first anti-slip pad is arranged on the surface of the first fixing part close to the second fixing part, and the second anti-slip pad is arranged on the surface of the second fixing part close to the first fixing part, and both the first anti-slip pad and the second anti-slip pad are used to contact the cable.

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