CN210074621U

CN210074621U - Cable pulling buffer

Info

Publication number: CN210074621U
Application number: CN201920618497.1U
Authority: CN
Inventors: 黄健忠
Original assignee: CHINA ERACOM CONTRACTING AND ENGINEERING Co Ltd
Current assignee: CHINA ERACOM CONTRACTING AND ENGINEERING Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-02-14
Anticipated expiration: 2029-04-30

Abstract

The utility model discloses a cable pulling buffer, which comprises a pulley block, a mounting frame and a connecting piece, wherein the pulley block comprises a well surface pulley and an underground pulley, a first rotating shaft of the well surface pulley is arranged on the mounting frame, the well surface pulley can rotate around the first rotating shaft, the underground pulley is connected with the mounting frame through the connecting piece, a second rotating shaft of the underground pulley is arranged on the connecting piece, and the underground pulley can rotate around the second rotating shaft; wherein the connecting piece can rotate around the connecting part of the connecting piece and the mounting rack, or the connecting piece is made of deformable materials or structures. The utility model discloses a setting of assembly pulley and mounting bracket ensures that the cable pulling in-process reduces the friction of optical cable at cable pulling in-process and well edge through the assembly pulley, reduces the loss of optical cable.

Description

Cable pulling buffer

Technical Field

The utility model relates to a communication cable laying operation technical field especially relates to a draw cable buffer.

Background

In the communication engineering cable pulling operation, the cable arrangement of the pipe well can be designed frequently, the cable contacts and rubs with the well edge in advance in the process of entering and exiting the pipe well, long-term operation can lead to cable crust wearing and tearing, and damage cable inlayer core wire or make the cable turn over the grade condition can even appear in serious time, lead to cable performance degradation or make useless, bring unnecessary economic loss.

The existing cable buffer is suitable for a circular wellhead as shown in figure 1, has poor applicability to the square wellhead, needs to lose a certain time for field adjustment in different operation areas, and is easy to move by external force. And because the operating personnel and well head have certain difference in height, draw the friction of formula switch and optical cable to take place to inhale magnetism easily among the cable operation process, wearing and tearing optical cable.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a stay cable buffer ensures that the stay cable in-process reduces the friction of the optical cable with the well edge in the stay cable process through the pulley block, and reduces the loss of the optical cable.

The purpose of the utility model is realized by adopting the following technical scheme:

a cable pulling buffer comprises a pulley block, a mounting frame and a connecting piece, wherein the pulley block comprises a well surface pulley and a downhole pulley, a first rotating shaft of the well surface pulley is mounted on the mounting frame, the well surface pulley can rotate around the first rotating shaft, the downhole pulley is connected with the mounting frame through the connecting piece, a second rotating shaft of the downhole pulley is mounted on the connecting piece, and the downhole pulley can rotate around the second rotating shaft; wherein the connecting piece can rotate around the connecting part of the connecting piece and the mounting rack, or the connecting piece is made of deformable materials or structures.

Further, the mounting bracket still includes the first baffle that is used for blocking the well edge, first baffle install in the mounting bracket is close to one side of the pulley in the pit and perpendicular to the bottom plate of mounting bracket.

Further, the mounting bracket includes second baffle, third baffle, first pivot both ends respectively with second baffle, third baffle are connected.

The underground pulley protection frame is connected with the mounting frame through the connecting piece; the underground pulley protection frame comprises a fourth baffle and a fifth baffle, and two ends of the second rotating shaft are connected with the fourth baffle and the fifth baffle respectively.

Furthermore, the first rotating shaft and the second rotating shaft are arranged on the position, corresponding to the central axis of the pulley block, of the pulley block.

Further, the number of the pulleys of the well surface pulley is two.

Further, the connector may adjust its length based on the downhole sheave position.

Furthermore, a plurality of bulges are arranged on the contact surface of the mounting rack and the well edge.

Further, the connecting piece is a steel wire rope, a spring or an iron chain.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides a draw cable buffer through the setting of well face assembly pulley and pulley in the pit for the direct contact that optical cable can avoid optical cable and well edge through the pulley in the operation process, effectual solution is at the loss of laying cable, the in-process friction of drawing cable to the optical cable. Meanwhile, the mounting frame can be directly arranged on the square or round well edge to fix the well surface pulley block, so that the step of adjusting in an operation area in the prior art is avoided, and the condition of displacement in the cable pulling process is reduced. In addition, the cable pulling operation is carried out through the pulley block, so that the labor intensity of operators can be reduced.

Drawings

FIG. 1 is a prior art cable buffer;

fig. 2 is a schematic structural diagram of an embodiment of the present invention;

in the figure: 1. a well surface pulley; 2. a downhole sheave; 3. a mounting frame; 4. a second baffle; 5. a third baffle plate; 6. a first baffle plate; 7. an underground pulley fender bracket; 8. a connecting member.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

The utility model provides a cable-pulling buffer, including well face pulley 1 and pulley 2 in the pit, the first pivot of well face pulley 1 is installed on mounting bracket 3, well face pulley 1 can wind the rotation of first pivot, pulley 2 in the pit passes through connecting piece 8 and connects mounting bracket 3, the second pivot of pulley 2 in the pit is installed on connecting piece 8, pulley 2 in the pit can wind the rotation of second pivot; wherein the connecting member 8 is rotatable about the connection of the connecting member 8 and the mounting frame 3, or the connecting member 8 is made of a deformable material or structure.

Through

well face pulley

1 and 2 settings of pulley in the pit for optical cable passes through the pulley and can avoid the direct contact of optical cable and well edge at the operation in-process, and effectual solution is at the loss of putting cable, the in-process friction of acting as go-between to the optical cable. Meanwhile, the mounting frame 3 can be directly arranged on the square or round well edge to fix the well surface pulley 1, so that the step of adjusting in an operation area in the prior art is avoided, and the condition of displacement in the cable pulling process is reduced. In addition, the cable pulling operation is carried out through the pulley block, so that the labor intensity of operators can be reduced. Improve the complex structure among the prior art, reduce unnecessary part, make the utility model discloses an area is little, and places the use easily.

The mounting frame 3 can be directly welded in the direction of the working well edge and used for stabilizing the pulley block and avoiding displacement in the cable pulling process. As shown in fig. 2, in the present embodiment, the mounting frame 3 is used for mounting the well pulley 1, and the mounting frame 3 includes a first baffle 6, a second baffle 4, and a third baffle 5. Second baffle 4 and third baffle 5 set up in the relative position of mounting bracket 3, and first baffle 6 is then located mounting bracket 3 and is close to 2 one sides of pulley in the pit, and the bottom plate of perpendicular to mounting bracket 3, in the middle of second baffle 4 and third baffle 5 promptly. And two ends of the first rotating shaft are respectively connected with the second baffle 4 and the third baffle 5.

In order to reduce the friction between the underground pulley and the well wall and prolong the service life of the underground pulley, an underground pulley protection frame 7 is further arranged and comprises a fourth baffle and a fifth baffle, and the two ends of the second rotating shaft are connected with the fourth baffle and the fifth baffle. The underground pulley protection frame 7 is connected with the second baffle 4 and the third baffle 5 of the mounting frame 3 through connecting pieces 8.

This cable buffer generally places along the well head, and first baffle 6 blocks the well edge, and is equipped with a plurality of archs at mounting bracket 3 and well edge contact surface, and the increase well edge is laminated with mounting bracket 3's frictional force for this improves the ware and further laminates with the well edge, need not the displacement of worrying the operation in-process. The design is carried out aiming at the well edge, the design is suitable for both a round well head and a square well head, and the requirements of most operations on the market can be met. And the adjustment time and the adjustment steps at the wellhead before operation are saved, the tool can be used as soon as being taken, the construction efficiency is increased, and the operation steps are reduced.

The pulley block comprises a well surface pulley 1 and an underground pulley 2, the pulley block is connected with the mounting frame 3 through a rotating shaft, the rotating shaft is arranged on a central axis of the pulley block, and the pulley rotates around the rotating shaft so as to realize a cable pulling optical cable. The underground pulley 2 is arranged on an underground pulley protection frame 7, and the underground pulley protection frame 7 is connected with the mounting frame 3 through a connecting piece 8. The underground pulley 2 plays a role in buffering between the well wall and the optical cable in the cable pulling process and plays a role in protection underground. In this embodiment, the number of well face pulleys 1 is two, reduces the optical cable friction at the well head in the cable pulling process.

More, connecting piece 8 comprises deformable material or structure, and materials such as spring, wire rope, iron chain generally can adjust according to pulley 2 in the pit, the position of pulley fender bracket 7 in the pit, and the personnel that conveniently draw the cable are to the adjustment of pulley 2 position in the pit to make and have suitable distance between cable and the wall of a well.

Specifically, the utility model discloses a method of use as follows:

1. uncovering the well cover and pulling out part of the optical cable;

2. a pull cable buffer is placed along the well edge position, so that the mounting frame 3 is attached to the well edge;

3. the length of the connecting piece 8 is adjusted to ensure that the underground pulley 2 is tightly attached to the well wall;

4. placing part of the optical cable pulled out in the step 1 on a well surface pulley 1, and performing well surface cable pulling operation;

5. and after the operation is finished, the stay cable buffer is withdrawn, and the well cover is covered.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A cable pulling buffer is characterized by comprising a pulley block, a mounting frame and a connecting piece, wherein the pulley block comprises a well surface pulley and a downhole pulley, a first rotating shaft of the well surface pulley is mounted on the mounting frame, the well surface pulley can rotate around the first rotating shaft, the downhole pulley is connected with the mounting frame through the connecting piece, a second rotating shaft of the downhole pulley is mounted on the connecting piece, and the downhole pulley can rotate around the second rotating shaft; wherein the connecting piece can rotate around the connecting part of the connecting piece and the mounting rack, or the connecting piece is made of deformable materials or structures.

2. A pull-cable buffer as claimed in claim 1, wherein: the mounting bracket still includes the first baffle that is used for blocking the well edge, first baffle install in the mounting bracket is close to down-hole pulley one side and perpendicular to the bottom plate of mounting bracket.

3. The cable buffer of claim 2, wherein the mounting bracket comprises a second baffle plate and a third baffle plate, and two ends of the first rotating shaft are respectively connected with the second baffle plate and the third baffle plate.

4. A cable buffer as claimed in claim 3, further comprising a downhole sheave guard, said downhole sheave guard being connected to said mounting bracket by said connection; the underground pulley protection frame comprises a fourth baffle and a fifth baffle, and two ends of the second rotating shaft are connected with the fourth baffle and the fifth baffle respectively.

5. The cable buffer of claim 4, wherein the first and second shafts are disposed on a central axis of the pulley block.

6. A cable buffer as claimed in claim 2 wherein the number of sheaves of the well-face sheave is two.

7. A cable buffer as claimed in claim 6, wherein the link is adjustable in length in accordance with the downhole sheave position.

8. A cable buffer as claimed in claim 2, wherein the contact surface of the mounting bracket with the well rim is provided with a plurality of projections.

9. A cable buffer as claimed in claim 7 wherein the connecting member is a wire rope, spring or chain.