A fiber optic transmission device suitable for downhole communications

Abstract

A kind of optical fiber transmission device suitable for downhole communication, it relates to cable laying equipment field, including reel, roller, rotary joint and guiding mechanism, reel is used to wind cable;Roller is coaxially arranged in reel, and reel can rotate around roller;Rotary joint is arranged in roller and end part extends to roller outside respectively, one end is connected with the cable wound on reel, the other end is connected with the cable on another reel.Cable is avoided to be worn and damaged by contact with reel when reel rotates, cable connection between adjacent two reels can be directly carried out on well, and cable laying can be directly and completely carried out downhole without worrying about cable twist wear and tear and other problems, with high practicability.

Description

Technical Field

[0001] This utility model belongs to the field of cable laying equipment, specifically an optical fiber transmission device suitable for underground communication. Background Technology

[0002] During underground operations, communication cables are typically laid to ensure smooth communication between the control room and the underground environment. Depending on the length of the underground tunnel, appropriate fiber optic cables of varying lengths must be selected for cable laying. When the underground tunnel is too long, the required fiber optic cable length also increases. In most cases, multiple bundles of fiber optic cables need to be prepared and spliced ​​underground. Due to the inherent fragility of fiber optics and the complex underground environment, splicing failure is common, making this process inconvenient. Furthermore, the rotation of multiple bundles of fiber optic cables during laying can easily cause excessive twisting of the fibers, leading to cable damage. Therefore, a fiber optic transmission device is needed that allows for pre-splitting above ground and prevents deflection during installation, ensuring a smooth and secure cable installation. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an optical fiber transmission device suitable for underground communication.

[0004] The present invention adopts the following technical solution:

[0005] An optical fiber transmission device suitable for downhole communication includes a winding reel, a roller, a rotary joint, and a guiding mechanism. The winding reel is used to wind cables. The roller is coaxially arranged with the winding reel therein, and the winding reel can rotate around the roller. The rotary joint is disposed in the roller and its ends extend beyond the roller. One end is connected to the cable wound on the winding reel, and the other end is connected to the cable on another winding reel. The guiding mechanism includes a first guiding component and a second guiding component. The first guiding component is disposed on one side of the winding reel and can rotate with the winding reel. The cable on the winding reel passes through the first guiding component and connects to the rotary joint. The second guiding component is connected to the roller and located on the other side of the winding reel. The cable on another winding reel passes through the second guiding component and connects to the rotary joint.

[0006] Preferably, the first guiding component comprises a first guiding block, a first guiding groove, and a first extension section. The first guiding block is disposed on the winding reel and extends outward, and the first guiding block can rotate with the winding reel. The first guiding groove is recessed downward from the top surface of the first guiding block, and the cable extends out through the first guiding groove and extends downward to connect with the rotary joint. The first extension section protrudes from one side of the first guiding groove to the other side, and a clearance channel is formed between the first extension section and the other side of the first guiding groove for the cable to enter the first guiding groove.

[0007] Preferably, the second guiding component includes a second guiding block, a second guiding groove, a second extension section, and a connecting section. Several second guiding blocks are arranged radially along the winding reel; the second guiding groove is recessed downwards from the top surface of the second guiding block; the second extension section protrudes from one side of the second guiding groove to the other side, forming a clearance channel between the second extension section and the other side of the second guiding groove for the cable to enter the second guiding groove; the connecting section connects the second guiding blocks and is fixed to the rotating shaft, and the second guiding blocks do not rotate with the rotation of the winding reel.

[0008] Preferably, it also includes a grip handle, which is disposed on the roller and extends vertically upward, and the grip handle is located on the side away from the first guide component.

[0009] Preferably, it further includes an outer sleeve and an inner sleeve disposed on the grip handle. The outer sleeve and the inner sleeve extend in directions parallel to the axis of the roller. The outer sleeve has a through-hole formed inside, allowing the inner sleeve to extend into it. The outer sleeve is disposed on the grip handle and extends above the winding reel. The inner sleeve is disposed at the end of the outer sleeve and extends outward.

[0010] Preferably, the combined length of the outer sleeve and the inner sleeve is greater than twice the width of the winding reel.

[0011] Preferably, the grip handle includes a vertical section, a straight section, and a fixed section. There are two vertical sections, which extend vertically outward from the side of the roller and are parallel to the roller axis. The straight section extends vertically upward from the end of the vertical section and the length of the straight section is greater than the radius of the winding reel. The fixed section is connected between the ends of the two vertical sections, and the outer sleeve is disposed on the fixed section.

[0012] As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: when laying cables, two adjacent winding reels can be connected by a rotary joint, so that the cables are not easily twisted when the winding reels rotate. At the same time, through the guiding mechanism, both the end and the front end of the cable can be opposite to the rotary joint, avoiding damage caused by contact wear between the cable and the winding reel when the winding reel rotates. The cables can be directly connected between two adjacent winding reels above the well, and the cables can be laid directly underground without worrying about problems such as cable twisting and wear. It has high practicality.

[0013] During installation, the winding reel rotates as the cable extends, so the first guide component can rotate with the winding reel, ensuring a stable connection between the two when the cable rotates with the rotary joint, preventing slippage and cable twisting.

[0014] The cable on the other winding reel is connected to the rotary joint via a second guide assembly, which ensures the stability of the connection between the rear cable and the rotary joint when the front winding reel rotates.

[0015] By holding the outer sleeve and inner sleeve on the handle, adjacent winding reels can be fixed together by the interlocking of the outer sleeve and inner sleeve, which facilitates the transportation of the winding reels underground. When laying cables, the winding reels can be removed one by one, which improves work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0018] Figure 3 for Figure 1 A magnified view of a section at point A in the middle;

[0019] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0020] Figure 5 This is a schematic diagram of the transportation status of this utility model;

[0021] Figure 6 This is a schematic diagram of the cable laying method of this utility model;

[0022] In the diagram: 1-Winding reel; 2-Roller; 3-Rotary joint; 4-Guiding mechanism; 41-First guiding assembly; 411-First guiding block; 412-First guiding groove; 413-First extension section; 42-Second guiding assembly; 421-Second guiding block; 422-Second guiding groove; 423-Second extension section; 424-Connecting section; 5-Holding handle; 51-Outer sleeve; 52-Inner sleeve; 53-Leaning hole; 54-Vertical section; 55-Vertical section; 56-Fixing section. Detailed Implementation

[0023] The present invention will be further described below through specific embodiments.

[0024] Reference Figures 1 to 6 As shown, an optical fiber transmission device suitable for downhole communication includes a winding reel 1, a roller 2, a rotary joint 3, a guiding mechanism 4, and a grip handle 5.

[0025] The winding reel 1 is used to wind cables and is a common winding part in the existing field. Its axial position is hollow.

[0026] The roller 2 and the winding reel 1 are arranged coaxially therein, and the winding reel 1 can rotate around the roller 2.

[0027] The rotary connector 3 is disposed in the roller 2 and its ends extend outside the roller 2. One end is connected to the cable wound on the winding reel 1, and the other end is connected to the cable on another winding reel 1. The rotary connector 3 is a common optical fiber rotary connector in the prior art, which is a device to ensure that the optical signal of the cables at both ends is not interrupted due to rotation. It is readily available to those skilled in the art and is not the focus of this application. Therefore, its structure and selection will not be further described here.

[0028] The guiding mechanism 4 includes a first guiding component 41 and a second guiding component 42. The first guiding component 41 is located on one side of the winding reel 1 and can rotate with the winding reel 1. The cable on the winding reel 1 passes through the first guiding component 41 and is connected to the rotary joint 3. The second guiding component 42 is connected to the roller 2 and is located on the other side of the winding reel 1. The cable on the other winding reel 1 passes through the second guiding component 42 and is connected to the rotary joint 3.

[0029] The first guiding component 41 comprises a first guiding block 411, a first guiding groove 412, and a first extension section 413. The first guiding block 411 is mounted on the winding reel 1 and extends outward, and can rotate with the winding reel 1. The first guiding groove 412 is recessed downward from the top surface of the first guiding block 411, through which the cable extends and downward to connect with the rotary joint 3. The first extension section 413 protrudes from one side of the first guiding groove 412 to the other side, forming a clearance channel between the first extension section 413 and the other side of the first guiding groove 412 for the cable to enter the first guiding groove 412. During installation, the winding reel 1 rotates as the cable extends, so the first guiding component 41 can rotate with the winding reel 1, maintaining the stability of the connection between the cable and the rotary joint 3 when they rotate, preventing slippage and cable twisting.

[0030] The second guide assembly 42 includes a second guide block 421, a second guide groove 422, a second extension section 423, and a connecting section 424. Several second guide blocks 421 are arranged radially along the winding reel 1. The second guide groove 422 is recessed downwards from the top surface of the second guide block 421. The second extension section 423 protrudes from one side of the second guide groove 422 to the other side, forming a clearance channel between the second extension section 423 and the other side of the second guide groove 422 for the cable to enter the second guide groove 422. The connecting section 424 connects between the second guide blocks 421 and is fixed to the rotating shaft. The second guide blocks 421 do not rotate with the rotation of the winding reel 1. The cable on the other winding reel 1 is connected to the rotary joint 3 through the second guide assembly 42, which ensures the stability of the connection between the rear cable and the rotary joint 3 when the front winding reel 1 rotates. Specifically, the edges of the first guide groove 412 and the second guide groove 422 are chamfered to prevent the cable from rubbing against the edges of the first guide groove 412 and the second guide groove 422.

[0031] A handle 5 is mounted on the roller 2 and extends vertically upwards, located on the side away from the first guide assembly 41. It also includes an outer sleeve 51 and an inner sleeve 52 mounted on the handle 5. The outer sleeve 51 and inner sleeve 52 extend parallel to the axis of the roller 2. The outer sleeve 51 has a through-hole 53 for the inner sleeve 52 to extend into. The outer sleeve 51 is mounted on the handle 5 and extends above the winding reel 1; the inner sleeve 52 is located at the end of the outer sleeve 51 and extends outwards. The outer sleeve 51 and inner sleeve 52 on the handle 5 allow adjacent winding reels 1 to be fixed by the interlocking of the outer sleeve 51 and inner sleeve 52, reducing space occupation and facilitating the transport of the winding reels 1 underground. When laying cables, the winding reels 1 can be removed sequentially, improving work efficiency. Specifically, the combined length of the outer sleeve 51 and inner sleeve 52 is greater than twice the width of the winding reel 1, ensuring that adjacent winding reels 1 do not easily interfere with each other during installation and fixing.

[0032] Specifically, the grip handle 5 includes a vertical section 54, a vertical section 55, and a fixed section 56. There are two vertical sections, which extend vertically outward from the side of the roller 2, and their extension direction is parallel to the axis of the roller 2. The vertical section 55 extends vertically upward from the end of the vertical section 54, and the length of the vertical section 55 is greater than the radius of the winding reel 1. The fixed section 56 is connected between the ends of the two vertical sections 55, and the outer sleeve 51 is set on the fixed section 56.

[0033] In use, first select the appropriate length of cable above the well according to the required laying length and connect them sequentially to the rotary joint 3. When laying down the well, each winding reel 1 can be nested between the outer sleeve 51 and the inner sleeve 52 to reduce the space occupied. Several winding reels 1 are placed on a transport trolley and transported down the well. During laying, the cable on the last winding reel 1 is fixed above the well. As the trolley moves down, the cable extends accordingly. The operator can move with the trolley to extend the cable. When the cable on a winding reel 1 is completely extended, hold the handle 5 of the winding reel 1 to remove it and fix it in place so that the cable on the next winding reel 1 can be laid. The two adjacent winding reels 1 are connected by a rotary joint 3, which makes it less likely to twist as the winding reel 1 rotates. At the same time, the guide mechanism 4 ensures that both the end and the front end of the cable are aligned with the rotary joint 3, preventing the cable from contacting and wearing with the winding reel 1 when it rotates, thus avoiding damage. The cable can be directly connected between the two adjacent winding reels 1 above ground, and the cable can be laid directly underground without worrying about cable twisting and wear, which is highly practical.

[0034] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be construed as limiting the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the specification of the present utility model shall still fall within the scope of the patent of the present utility model.

Claims

1. An optical fiber transmission device suitable for downhole communication, characterized by: The device includes a winding reel, a roller, a rotary joint, and a guiding mechanism. The winding reel is used to wind cables. The roller is coaxially arranged with the winding reel, and the winding reel can rotate around the roller. The rotary joint is disposed in the roller and its ends extend beyond the roller. One end is connected to the cable wound on the winding reel, and the other end is connected to the cable on another winding reel. The guiding mechanism includes a first guiding component and a second guiding component. The first guiding component is disposed on one side of the winding reel and can rotate with the winding reel. The cable on the winding reel passes through the first guiding component and connects to the rotary joint. The second guiding component is connected to the roller and is located on the other side of the winding reel. The cable on another winding reel passes through the second guiding component and connects to the rotary joint.

2. The fiber optic transmission device for downhole communication of claim 1, wherein: The first guiding component comprises a first guiding block, a first guiding groove, and a first extension section. The first guiding block is disposed on the winding reel and extends outward, and the first guiding block can rotate with the winding reel. The first guiding groove is recessed downward from the top surface of the first guiding block, and the cable extends out through the first guiding groove and extends downward to connect with the rotary joint. The first extension section protrudes from one side of the first guiding groove to the other side, and a clearance channel is formed between the first extension section and the other side of the first guiding groove, allowing the cable to enter the first guiding groove.

3. The fiber optic transmission device for downhole communication of claim 1, wherein: The second guiding component includes a second guiding block, a second guiding groove, a second extension section, and a connecting section. Several second guiding blocks are provided and arranged radially along the winding reel. The second guiding groove is recessed downward from the top surface of the second guiding block. The second extension section protrudes from one side of the second guiding groove to the other side, forming a clearance channel between the second extension section and the other side of the second guiding groove for the cable to enter the second guiding groove. The connecting section connects between each second guiding block and is fixed on the rotating shaft. The second guiding blocks do not rotate with the rotation of the winding reel.

4. The fiber optic transmission device for downhole communications of claim 1, wherein: It also includes a grip handle, which is disposed on the roller and extends vertically upward, and the grip handle is located on the side away from the first guide assembly.

5. A fiber optic transmission device for use in downhole communications according to claim 4, wherein: It also includes an outer sleeve and an inner sleeve disposed on the grip handle. The extension directions of the outer sleeve and the inner sleeve are parallel to the axis of the roller. A clearance hole is formed through the inner sleeve to allow the inner sleeve to extend into it. The outer sleeve is disposed on the grip handle and extends above the winding spool. The inner sleeve is disposed at the end of the outer sleeve and extends outward.

6. A fiber optic transmission device for use in downhole communications according to claim 5, wherein: The combined length of the outer sleeve and the inner sleeve is greater than twice the width of the winding reel.

7. The fiber optic transmission device for downhole communications of claim 5, wherein: The grip includes a vertical section, a straight section, and a fixed section. There are two vertical sections, which extend vertically outward from the side of the roller and are parallel to the roller axis. The straight section extends vertically upward from the end of the vertical section and the length of the straight section is greater than the radius of the winding reel. The fixed section is connected between the ends of the two vertical sections, and the outer sleeve is set on the fixed section.

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