Distributed optical fiber end protection device for double-core temperature measurement applicable to high-pressure environment

Abstract

The utility model relates to the technical field of optical fiber temperature measurement discloses a kind of distributed optical fiber end protection device for double-core temperature measurement suitable for high-pressure environment, comprising: shell, hollow and with the opening of intercommunication outside world;Cable channel, hollow and both ends opening, with helical posture fixed in the shell interior, both ends of the cable channel are located at the opening and are communicated with outside world by the opening, the part of the cable channel deviating from the opening is extended in transverse S shape.In the present scheme, the cable channel of helical extension is applied to the guiding effect of optical fiber, so that the optical fiber can be bent along the extension track of cable channel, and in the environment end deviating from the opening, it is returned in smooth S shape, and then the possibility of optical fiber breaking is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of fiber optic temperature measurement, and in particular to a distributed fiber optic end protection device for dual-core temperature measurement suitable for high-pressure environments. Background Technology

[0002] Distributed fiber optic temperature measurement technology has been widely used for temperature monitoring in complex environments such as storage warehouses, oil and gas tanks, and rail vehicle cabins due to its advantages such as high sensitivity, resistance to electromagnetic interference, and continuous distributed measurement. In existing technologies, optical fibers usually need to pass through closed high-pressure structures or be deployed when the warehouse is full of materials. The optical fibers need to be bent and returned after being straightened at the end of the environment. The bent end of the optical fiber at the end of the environment is easily damaged and broken when straightened. Utility Model Content

[0003] In view of this, the present invention provides a distributed optical fiber end protection device for dual-core temperature measurement suitable for high-pressure environments. It can apply a guiding effect to the optical fiber through the spirally extended cable channel, so that the optical fiber can bend along the extension trajectory of the cable channel, thereby reducing the possibility of optical fiber breakage.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A distributed optical fiber end protection device for dual-core temperature measurement suitable for high-pressure environments, comprising:

[0006] The shell is hollow and has an opening that connects to the outside.

[0007] The cable channel is hollow and open at both ends, and is fixed inside the housing in a spiral posture. Both ends of the cable channel are located at the openings and communicate with the outside through the openings. The part of the cable channel away from the openings extends in a horizontal S-shape.

[0008] Preferably, the housing includes a receiving cylinder and a top cover bolted to the receiving cylinder, and the cable channel is fixedly connected to the receiving cylinder.

[0009] Preferably, the top cover has a recessed groove for accommodating the bolt head.

[0010] Preferably, the top cover is threadedly connected to the receiving cylinder, and the top end of the receiving cylinder has a sealing ring for abutting against the bottom end of the top cover.

[0011] Preferably, a sealant is provided between the sealing ring and the outer wall of the receiving cylinder, and the sealant fills the gap between the sealing ring and the receiving cylinder.

[0012] Preferably, a buffer sleeve is fixed inside the opening to allow cables to pass through and fill the opening, and both ends of the cable channel extend to the bottom end of the buffer sleeve.

[0013] Preferably, the bottom end of the cable channel abuts against the inner bottom wall of the receiving cylinder and extends in a horizontal S-shape.

[0014] Preferably, the top of the cable channel extends in a curved shape from the opening into the housing cylinder and then extends in a spiral posture to the bottom of the housing cylinder.

[0015] Preferably, the cable channel within the receiving cylinder includes an inlet section and an outlet section, which are vertically spaced apart.

[0016] Preferably, the bottom end of the housing has a support column for supporting the housing in the air.

[0017] As can be seen from the above technical solution, the dual-core temperature measurement distributed optical fiber end protection device for high-pressure environments provided by this utility model applies a guiding effect to the optical fiber through the spirally extended cable channel, so that the optical fiber can bend along the extension trajectory of the cable channel and return in a smooth S-shape away from the environmental end of the outlet, thereby reducing the possibility of optical fiber breakage. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating the structure of a distributed optical fiber end protection device for dual-core temperature measurement suitable for high-pressure environments, according to one embodiment.

[0020] Figure 2 This is a schematic diagram illustrating the position of the sealing ring according to one embodiment;

[0021] Figure 3 This is a schematic diagram illustrating the position of the buffer sleeve according to one embodiment;

[0022] Figure 4 This is a schematic diagram illustrating a cable channel structure according to one embodiment.

[0023] Figure label:

[0024] 1. Housing; 11. Top cover; 12. Receiving cylinder; 121. Connecting section; 13. Opening; 14. Support column; 15. Bolt; 16. Sink; 2. Cable channel; 21. Inlet section; 22. Outlet section; 3. Sealant; 31. Sealing ring; 4. Plug; 41. Buffer sleeve. Detailed Implementation

[0025] This utility model discloses a distributed optical fiber end protection device for dual-core temperature measurement suitable for high-pressure environments. It can apply a guiding effect to the optical fiber through the spirally extended cable channel, so that the optical fiber can bend along the extension trajectory of the cable channel, thereby reducing the possibility of optical fiber breakage.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This disclosure provides an exemplary embodiment of a distributed optical fiber end protection device for dual-core temperature measurement suitable for high-pressure environments, such as... Figure 1 As shown, Figure 1 This is a schematic diagram illustrating the structure of a distributed optical fiber end protection device for dual-core temperature measurement suitable for high-pressure environments, according to an exemplary embodiment. Figure 2 This is a schematic diagram illustrating the position of the sealing ring according to an exemplary embodiment. Figure 3 This is a schematic diagram illustrating the position of the buffer sleeve according to an exemplary embodiment. Figure 4 This is a schematic diagram illustrating a cable channel structure according to an exemplary embodiment. The following is in conjunction with... Figures 1 to 4 To explain.

[0028] The specific embodiments described below are intended to help those skilled in the art understand this embodiment, but this embodiment is not limited to the specific embodiments described below.

[0029] Reference Figure 1 and Figure 2 This disclosure provides an exemplary embodiment of a distributed optical fiber end protection device for dual-core temperature measurement suitable for high-pressure environments. The distributed optical fiber end protection device for dual-core temperature measurement suitable for high-pressure environments includes:

[0030] The shell 1 is hollow and has an opening 13 that connects to the outside.

[0031] The cable channel 2 is hollow and has openings 13 at both ends. It is fixed inside the housing 1 in a spiral posture. Both ends of the cable channel 2 are located at the openings 13 and are connected to the outside through the openings 13. The part of the cable channel 2 away from the openings 13 extends in a horizontal S-shape.

[0032] For example, refer to Figure 1 and Figure 2 The housing 1 includes a receiving cylinder 12 and a top cover 11 bolted to the receiving cylinder 12. An opening 13 is formed at the center of the top cover 11 and extends vertically through the top cover 11. The bottom end of the housing 1 has a support column 14 for supporting the housing 1 in the air. The top end of the support column 14 is fixed at the center of the receiving cylinder 12, and the bottom end of the support column 14 extends downward vertically. The edge of the top cover 11 extends downward vertically and the inner wall is threaded. The top end of the receiving cylinder 12 has a vertically upward extending connecting section 121. The connecting section 121 is located between the inner wall and the outer wall of the receiving cylinder 12, and the outer wall of the connecting section 121 forms a stepped structure between the outer wall of the receiving cylinder 12 and the outer wall of the receiving cylinder 12 to accommodate the vertically downward extending solid of the top cover 11. The outer wall of the connecting section 121 is threaded. The bottom edge of the top cover 11 is threaded to the connecting section 121, and the bottom end of the outer wall of the top cover 11 is coplanar with the outer wall of the receiving cylinder 12.

[0033] The top end of the receiving cylinder 12 has a sealing ring 31 for abutting against the bottom end of the top cover 11. The sealing ring 31 is bonded to the top end face of the receiving cylinder 12 and is adapted to the contour of the top end face of the receiving cylinder 12. The sealing ring 31 is fixed between the connecting section 121 and the inner wall of the receiving cylinder 12. When the top cover 11 is threadedly connected to the receiving cylinder 12, the bottom end face of the top cover 11 abuts against the top surface of the sealing ring 31. A sealant 3 is provided between the sealing ring 31 and the outer wall of the receiving cylinder 12. The sealant 3 is located between the connecting section 121 and the sealing ring 31, and the two opposing side walls of the sealant 3 abut against the connecting section 121 and the sealing ring 31 respectively. The sealant 3 is bonded to the top end face of the receiving cylinder 12 and is set along the outline of the top end face of the receiving cylinder 12. The sealant 3 fills the gap between the sealing ring 31 and the receiving cylinder 12. The top surface of the sealant 3 is flush with the top surface of the sealing ring 31. When the top cover 11 is threadedly connected to the receiving cylinder 12, the bottom end face of the top cover 11 abuts against the top surface of the sealant 3.

[0034] Reference Figure 1 and Figure 3 The top cover 11 is threaded with vertically arranged bolts 15, and there are multiple bolts 15 evenly spaced along the circumference. The threaded end of the bolt 15 passes through the outer wall of the top cover 11 vertically and extends to below the top end face of the receiving cylinder 12. The head of the bolt 15 protrudes from the outer wall of the top cover 11, and the top cover 11 is provided with a groove 16 for receiving the head of the bolt 15.

[0035] Reference Figure 3 and Figure 4 The cable channel 2 is fixedly connected to the receiving cylinder 12. The top of the cable channel 2 is curved and extends from the opening 13 into the receiving cylinder 12, and then extends to the bottom of the receiving cylinder 12 in a spiral posture. That is, the cable channel 2 starts to spiral at the boundary between the top cover 11 and the receiving cylinder 12. The outer wall of the cable channel 2 in this spiral shape is fixedly connected to the inner wall of the receiving cylinder 12. The solid part of the cable channel 2 located above the boundary between the top cover 11 and the receiving cylinder 12 is suspended in the center of the internal space of the top cover 11.

[0036] The cable channel 2 within the housing cylinder 12 includes an inlet section 21 and an outlet section 22, which are vertically spaced apart. The inlet section 21 is the portion of the cable channel 2 where the optical fiber enters the cable channel 2 through one end at the opening 13 and continues to extend towards the bottom of the housing cylinder 12. Similarly, the outlet section 22 is the portion of the cable channel 2 where the optical fiber bends within the cable channel 2 after reaching the bottom of the housing cylinder 12 and extends towards the opening 13. When the inlet section 21 reaches the bottom of the housing cylinder 12 via a spiral, it is located on one side of the bottom position. The cable channel 2 at the bottom of the housing cylinder 12 extends towards the other side of the bottom of the housing cylinder 12 in a horizontal S-shaped trajectory, and then resumes its spiral trajectory upwards to form the outlet section 22. The alternating distribution and S-shaped extension of the inlet and outlet sections 21 and 22 increase the bending radius of the optical fiber within the cable channel 2, reducing the possibility of fiber breakage.

[0037] A buffer sleeve 41 is fixed inside the opening 13, allowing cables to pass through and filling the opening 13. The top end of the buffer sleeve 41 extends from the opening 13 above the top cover 11, and the bottom end of the buffer sleeve 41 extends into the interior of the top cover 11 below the opening 13. The side wall of the buffer sleeve 41 is fixedly connected to the inner wall of the opening 13, and the buffer sleeve 41 fills the opening 13. Both ends of the cable channel 2 extend to the bottom end of the buffer sleeve 41, that is, the cable channel 2 above the boundary between the top cover 11 and the receiving cylinder 12 extends into the interior of the buffer sleeve 41. The optical fiber extends from the end of the buffer sleeve 41 above the top cover 11 into the interior of the buffer sleeve 41, and enters the interior of the cable channel 2 located inside the buffer sleeve 41. After extending along the spiral contour of the cable channel 2, the optical fiber extends out from the other port of the cable channel 2 inside the buffer sleeve 41, and after passing through the buffer sleeve 41 from bottom to top, it extends out from the port of the buffer sleeve 41 above the top cover 11.

[0038] The opening 13 is detachably connected to a plug 4 for sealing the opening 13. The outer diameter of the plug 4 is larger than the inner diameter of the opening 13. The plug 4 has a cylindrical structure with the opening 13 facing downward and hollow inside. The plug 4 is sleeved with the buffer sleeve 41. The plug 4 can close the port of the buffer sleeve 41 that extends above the top cover 11 and make the bottom end face of the plug 4 abut against the top surface of the top cover 11. The bottom end face of the plug 4 closes the edge of the opening 13 on the outer wall of the top cover 11, reducing the possibility of external contamination entering the cable channel 2 through the buffer sleeve 41.

[0039] In this embodiment, the optical fiber is guided by the spirally extended cable channel 2, so that the optical fiber can bend along the extension trajectory of the cable channel 2 and return in a smooth S-shape at the end of the environment away from the outlet 13, thereby reducing the possibility of optical fiber breakage.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A distributed optical fiber end protection device for dual-core temperature measurement suitable for high-pressure environments, characterized in that, include: The shell (1) is hollow and has an opening (13) that connects to the outside. The cable channel (2) is hollow and has openings (13) at both ends. It is fixed inside the housing (1) in a spiral posture. Both ends of the cable channel (2) are located at the openings (13) and are connected to the outside through the openings (13). The part of the cable channel (2) away from the openings (13) extends in a horizontal S-shape.

2. The distributed optical fiber end protection device for dual-core temperature measurement in high-pressure environments according to claim 1, characterized in that, The housing (1) includes a receiving cylinder (12) and a top cover (11) bolted to the receiving cylinder (12), and the cable channel (2) is fixedly connected to the receiving cylinder (12).

3. The distributed optical fiber end protection device for dual-core temperature measurement in high-pressure environments according to claim 2, characterized in that, The top cover (11) has a groove (16) for accommodating the head of the bolt (15).

4. The distributed optical fiber end protection device for dual-core temperature measurement in high-pressure environments according to claim 2, characterized in that, The top cover (11) is threadedly connected to the receiving cylinder (12), and the top end of the receiving cylinder (12) has a sealing ring (31) for abutting against the bottom end of the top cover (11).

5. The distributed optical fiber end protection device for dual-core temperature measurement in high-pressure environments according to claim 4, characterized in that, There is a sealant (3) between the sealing ring (31) and the outer wall of the receiving cylinder (12), and the sealant (3) fills the gap between the sealing ring (31) and the receiving cylinder (12).

6. The distributed optical fiber end protection device for dual-core temperature measurement in high-pressure environments according to claim 1, characterized in that, The opening (13) is fixed with a buffer sleeve (41) that allows cables to pass through and fills the opening (13), and both ends of the cable channel (2) extend into the bottom of the buffer sleeve (41).

7. The distributed optical fiber end protection device for dual-core temperature measurement in high-pressure environments according to claim 1, characterized in that, The opening (13) is detachably connected to a plug (4) for sealing the opening (13).

8. The distributed optical fiber end protection device for dual-core temperature measurement in high-pressure environments according to claim 2, characterized in that, The top of the cable channel (2) curves from the opening (13) into the interior of the receiving cylinder (12) and extends in a spiral posture to the bottom of the receiving cylinder (12).

9. The distributed optical fiber end protection device for dual-core temperature measurement in high-pressure environments according to claim 8, characterized in that, The cable channel (2) inside the container (12) includes an inlet section (21) and an outlet section (22), which are vertically spaced apart.

10. The distributed optical fiber end protection device for dual-core temperature measurement in high-pressure environments according to claim 1, characterized in that, The bottom end of the housing (1) has a support (14) for supporting the housing (1) in the air.

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