Device for preventing cable from being scratched in well

Abstract

The utility model discloses a cable well descending anti-scraping device which comprises a pulley assembly suspended at the edge position of a circular well mouth and used for conveying a cable into the well mouth; the two fixing assemblies are symmetrically fixed to the two sides of the circular wellhead; the long screw penetrates through the pulley assembly and the fixing assembly and is used for fixing the position of the pulley assembly, the pulley assembly comprises three pairs of protective plates, a rotatable pulley is arranged between each pair of protective plates, the adjacent protective plates are rotationally connected through a pin shaft, a U-shaped plate is arranged between the bottoms of the protective plates located at the two ends, and the U-shaped plate is connected with the pulley. According to the device for preventing the cable from being scratched in the well, the pulley is fixed aiming at a circular well opening, the pulley is prevented from moving when the cable is placed in the cable well, the cable laying efficiency is guaranteed, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable well construction, in particular to a cable well anti-scratching device. Background Art

[0002] At present, cables are generally laid underground. To ensure the safety of the cables, it is necessary to set up cable wells and transport the cables into the wells for laying.

[0003] As the cable is transported downward, it will generate friction with the wellhead, which will cause the cable surface to wear and affect the use of the cable. For a square wellhead, the pulley is supported at the wellhead so that the cable can be transported into the wellhead along the pulley. However, for a circular wellhead, the pulley is not easy to fix due to the curved inner wall. This can easily cause the pulley to shift during cable transportation, affecting the cable laying efficiency. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a device for preventing cables from being scratched when being lowered into a cable well. The pulley is fixed to a circular wellhead to prevent the pulley from shifting when the cable is lowered into the cable well, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cable downhole anti-scratch device, comprising:

[0006] A pulley assembly is suspended at the edge of the circular wellhead and is used to transport the cable into the wellhead;

[0007] There are two fixed components, which are symmetrically fixed on both sides of the circular wellhead;

[0008] The long screw rod passes through the pulley assembly and the fixing assembly and is used to fix the position of the pulley assembly.

[0009] As a preferred technical solution of the utility model, the pulley assembly includes three pairs of guard plates, a rotatable pulley is arranged between each pair of guard plates, adjacent guard plates are rotatably connected by pins, a U-shaped plate is arranged between the bottoms of the guard plates at both ends, and the U-shaped plate is provided with a through hole for a long screw to pass through.

[0010] As a preferred technical solution of the utility model, the pulley is a waist wheel without grooves.

[0011] As a preferred technical solution of the utility model, the fixing assembly includes a channel steel, both ends of which are located on the ground and fixedly connected to the ground via grounding screws.

[0012] As a preferred technical solution of the utility model, the channel steel includes a first channel steel and a second channel steel, the first channel steel is provided with a sliding groove inside, the second channel steel is located in the sliding groove of the first channel steel, and can be telescopically moved in the first channel steel.

[0013] As a preferred technical solution of the utility model, the first channel steel is provided with a first strip hole, the second channel steel is provided with a second strip hole, and the positions of the first strip hole and the second strip hole coincide with each other.

[0014] As a preferred technical solution of the utility model, a third strip hole is provided at the upper end of the first channel steel, and the third strip hole is connected to the first strip hole. A stud is provided on the upper surface of one end of the second channel steel, and the stud passes through the third strip hole and a locking nut is threadedly connected to the outer side surface of the stud.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the cable downhole anti-scratch device has a compact structure and a reasonable design. By placing fixed components symmetrically on both sides of the circular wellhead and providing a U-shaped plate on the pulley assembly, a long screw is passed through the fixed components and the U-shaped plate on both sides so that the pulley is suspended and fixed at the edge of the wellhead, which facilitates the cable to be lowered around the pulley into the well, thereby avoiding wear on the cable surface and preventing the pulley from shifting, thereby improving the cable laying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 is a schematic diagram of the structure of the pulley assembly;

[0018] Figure 3 A schematic diagram of the structure of the fixed component.

[0019] In the figure: 1 pulley assembly, 11 guard plate, 12 pulley, 13 pin shaft, 14 U-shaped plate, 15 through hole, 2 fixing assembly, 21 channel steel, 211 first channel steel, 212 second channel steel, 213 first strip hole, 214 sliding groove, 215 second strip hole, 216 third strip hole, 217 stud, 218 locking nut, 219 grounding screw, 3 long screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 The utility model provides a technical solution: a cable downhole anti-scratch device, including a pulley assembly 1, the pulley assembly 1 includes three pairs of guard plates 11, a rotatable pulley 12 is arranged between each pair of guard plates 11, adjacent guard plates 11 are rotatably connected by a pin shaft 13, a U-shaped plate 14 is arranged between the bottoms of the guard plates 11 at both ends, and a through hole 15 for a long screw 3 to pass through is arranged on the U-shaped plate 14. The three pulleys 12 are selected to be triangular when fixed, which can well limit the cable and ensure the stability of the cable when it is lowered;

[0022] There are two fixing components 2, which are symmetrically fixed on both sides of the circular wellhead. The fixing components 2 include a channel steel 21, both ends of which are located on the ground and fixedly connected to the ground through grounding screws 219.

[0023] The long screw 3 passes through the pulley assembly 1 and the fixing assembly 2 and is used to fix the position of the pulley assembly 1.

[0024] Furthermore, the pulley 12 is a pulley without grooves to prevent the cable from shaking back and forth during the lowering process.

[0025] Furthermore, the channel steel 21 includes a first channel steel 211 and a second channel steel 212. The first channel steel 211 is provided with a sliding groove 214. The second channel steel 212 is located in the sliding groove 214 of the first channel steel 211 and can be telescopically moved in the first channel steel 211. By telescopically arranging the second channel steel 212 in the first channel steel 211, the length of the overall channel steel 21 can be adjusted according to the size of the wellhead, thereby facilitating the fixation of the two ends of the channel steel 21.

[0026] Furthermore, a first strip hole 213 is provided on the first channel steel 211, and a second strip hole 215 is provided on the second channel steel 212. The positions of the first strip hole 213 and the second strip hole 215 coincide with each other. Two long bolts 3 respectively pass through the first strip hole 213 and the second strip hole 215 on the two fixing components 2, and are tightened by nuts to fix the position of the pulley 12.

[0027] Furthermore, a third strip hole 216 is provided at the upper end of the first channel steel 211, and the third strip hole 216 is connected to the first strip hole 213. A stud 217 is provided on the upper surface of one end of the second channel steel 212. The stud 217 passes through the third strip hole 216 and the outer side surface of the stud 217 is threadedly connected with a locking nut 218. By setting the stud 217 and the locking nut 218, the protruding length of the second channel steel 212 is fixed after the position of the second channel steel 212 is adjusted.

[0028] When in use: place the two fixing components 2 on both sides of the circular wellhead respectively, adjust the extension length of the second channel steel 212 in the fixing component 2 according to the size of the wellhead, so that the two ends of the first channel steel 211 and the second channel steel 212 are respectively located on the ground, fix the first channel steel 211 and the second channel steel 212 to the ground through the grounding screws 219, and then tighten the locking nut 218 to fix the position of the second channel steel 212, and then pass the two long screws 3 through the U-shaped plates 14 under the pulleys 12 at both ends of the pulley assembly 1 respectively, one of the long screws 3 passes through the first strip holes 213 and the U-shaped plates 14 on the two first channel steels 211, and the other long screw 3 passes through the second strip holes 215 and the other U-shaped plates 14 on the two second channel steels 212, so that the pulley assembly 1 is suspended at the edge of the circular wellhead, and finally the long screw 3 is locked and fixed with a nut, and when lowering the cable, the cable is wound around the surface of the pulley 12 and lowered into the well for laying.

[0029] The utility model can be conveniently operated, occupies little space when in use, is easy to operate and use; the pulley 12 can be fixed when the cable is lowered in the circular wellhead, which solves the problem that the pulley 12 on the curved wall is difficult to fix, prevents the pulley 12 from moving easily when the cable is lowered, ensures the stability of the cable downward transportation, and improves the convenience of use.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable downhole anti-scratch device, characterized in that: include: A pulley assembly (1) is suspended at the edge of the circular wellhead and is used to transport the cable into the wellhead; Two fixing components (2) are symmetrically fixed on both sides of the circular wellhead; The long screw (3) passes through the pulley assembly (1) and the fixing assembly (2) and is used to fix the position of the pulley assembly (1).

2. The cable downhole anti-scratch device according to claim 1, characterized in that: The pulley assembly (1) comprises three pairs of guard plates (11), a rotatable pulley (12) is arranged between each pair of guard plates (11), adjacent guard plates (11) are rotatably connected via a pin shaft (13), a U-shaped plate (14) is arranged between the bottoms of the guard plates (11) at both ends, and a through hole (15) is arranged on the U-shaped plate (14) for the long screw (3) to pass through.

3. The cable downhole anti-scratch device according to claim 1, characterized in that: The pulley (12) is a waist pulley without grooves.

4. The cable downhole anti-scratch device according to claim 1, characterized in that: The fixing assembly (2) comprises a channel steel (21), both ends of which are located on the ground and fixedly connected to the ground via grounding screws (219).

5. The cable downhole anti-scratch device according to claim 4, characterized in that: The channel steel (21) comprises a first channel steel (211) and a second channel steel (212); a sliding groove (214) is provided inside the first channel steel (211); the second channel steel (212) is located in the sliding groove (214) of the first channel steel (211) and is telescopically movable in the first channel steel (211).

6. The cable downhole anti-scratch device according to claim 5, characterized in that: The first channel steel (211) is provided with a first strip-shaped hole (213), and the second channel steel (212) is provided with a second strip-shaped hole (215), and the positions of the first strip-shaped hole (213) and the second strip-shaped hole (215) are overlapped.

7. The cable downhole anti-scratch device according to claim 6, characterized in that: A third strip hole (216) is provided at the upper end of the first channel steel (211), and the third strip hole (216) is connected to the first strip hole (213); a stud (217) is provided on the upper surface of one end of the second channel steel (212), and the stud (217) passes through the third strip hole (216), and a locking nut (218) is threadedly connected to the outer side surface of the stud (217).

Images