Optical fiber slip ring with external pressure compensation device

Abstract

The utility model relates to the technical field of optical fiber communication, and discloses an optical fiber slip ring with an external pressure compensation device, a bearing seat and a bearing which are matched with insertion core assemblies are arranged in inner cavities of a flange shell and an outer shell, one insertion core assembly far away from a mounting seat is extruded and fixed in the inner cavity of the outer shell through a mounting sleeve, and a pressure compensation device is arranged in the inner cavity of the outer shell. Cavities formed by the mounting seat and the flange shell, the shell and the mounting sleeve, and the mounting sleeve and the insertion core assembly are all liquid cavities and are filled with pressure compensation liquid; a liquid cavity in the outer shell communicates with a pressure compensation assembly through an external pipe, pressure compensation liquid expands or contracts when subjected to external temperature or pressure changes, and the pressure compensation assembly is synchronously driven to conduct pressure compensation. According to the utility model, the external pressure compensation assembly is communicated with the liquid cavity of the inner cavity of the optical fiber slip ring shell, so that daily maintenance and replacement are facilitated, and the processing and assembling cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber communication, in particular to an optical fiber slip ring with an external pressure compensation device. Background Art

[0002] Current fiber optic slip rings designed to withstand hydraulic pressure underwater only address optical transmission issues, but fail to address the issues of adapting to varying temperatures and high pressures. These issues can lead to fluid expansion, resulting in an imbalanced internal and external pressure differential and, consequently, internal cavity instability. Furthermore, these slip rings often incorporate pressure compensation structures within the slip ring itself, which places high demands on sealing performance, is complex to manufacture, and is inconvenient to replace and maintain on a daily basis. Utility Model Content

[0003] (1) Technical problems solved

[0004] In response to the deficiencies in the prior art, the utility model provides a fiber optic slip ring with an external pressure compensation device, which solves the problem that the pressure compensation mechanism used in the existing underwater hydraulically resistant fiber optic slip ring is difficult to manufacture and inconvenient to maintain daily.

[0005] (2) Technical solution

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A fiber optic slip ring of an external pressure compensation device comprises a flange shell and an outer shell, one end of the outer shell is fixedly connected to one end of the flange shell, the outer shell and the inner cavity of the flange shell are arranged with a pair of coupled core assemblies, one of the core assemblies rotates with the rotor shaft, the inner cavity of the flange shell is sealed and movably connected to a mounting seat through a dynamic sealing assembly, one end of the mounting seat is fixedly provided with a rotor shaft, the inner cavity of the flange shell and the outer shell are arranged with a bearing seat and a bearing matching the core assemblies, one of the core assemblies away from the mounting seat is squeezed and fixed to the inner cavity of the outer shell by a mounting sleeve, the cavities composed of the mounting seat and the flange shell, the outer shell and the mounting sleeve, and the mounting sleeve and the core assemblies are all liquid cavities and are filled with pressure compensation liquid; the liquid cavity in the outer shell is connected to the pressure compensation assembly through an external tube, and the pressure compensation liquid expands or contracts when subjected to changes in external temperature or pressure, synchronously driving the pressure compensation assembly to perform pressure compensation.

[0008] Preferably, the dynamic sealing assembly includes a dynamic sealing retaining ring and a dynamic sealing ring, the dynamic sealing retaining ring is sleeved on the outside of the rotor shaft and fixedly connected to the flange housing, and the dynamic sealing ring is arranged between the mounting seat and the flange housing.

[0009] Preferably, a self-focusing lens is fused with an optical fiber and encapsulated inside a ceramic ferrule to form the ferrule assembly, and the light path between the two ferrule assemblies is output vertically from the self-focusing lens.

[0010] Preferably, the inner cavity of the optical fiber slip ring housing is filled with pressure compensation fluid, and the optical path between the ferrule assemblies is coupled using Glens lenses.

[0011] Preferably, one end of the rotor shaft and the outer shell are both fixedly provided with a plug, the optical cable is inserted into the plug and is communicated with the core assembly through a bare optical fiber, and a sealing gasket is provided between the mounting seat, the outer shell and the plug.

[0012] (3) Beneficial effects

[0013] The utility model has the following beneficial effects:

[0014] The optical fiber slip ring of the external pressure compensation device can be used to ensure the overall sealing performance of the ferrule assembly when the rotor shaft drives the rotation through the provided dynamic sealing component; through the provided liquid chamber and pressure compensation liquid, when the external temperature or pressure changes, the pressure compensation liquid can be compressed or expanded to perform pressure compensation, so as to ensure the normal function of the entire optical fiber slip ring; the liquid chamber and the pressure compensation component are connected by the provided external tube, so that the entire pressure compensation component is externalized, which is conducive to daily processing and assembly, and also convenient for subsequent maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model in the AA direction;

[0017] Figure 3 This is a schematic diagram of the layout structure of the ferrule assembly of the utility model.

[0018] In the figure: 1. Flange shell; 2. Outer shell; 3. Rotor shaft; 4. Mounting seat; 5. Bearing seat; 6. Bearing; 7. Mounting sleeve; 8. Insert assembly; 81. Self-focusing microlens; 9. Liquid chamber; 10. External tube; 11. Pressure compensation assembly; 12. Dynamic sealing ring; 13. Dynamic sealing ring; 14. Plug; 15. Sealing gasket. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 The utility model provides a technical solution: an optical fiber slip ring of an external pressure compensation device, comprising a flange shell 1 and an outer shell 2, one end of the outer shell 2 is fixedly connected to one end of the flange shell 1, and a pair of coupled ferrule assemblies 8 are arranged in the inner cavity of the outer shell 2 and the flange shell 1, one ferrule assembly 8 rotates with the rotor shaft 3, and the inner cavity of the flange shell 1 is sealed and movably connected with a mounting seat 4 through a dynamic sealing assembly, and a rotor shaft 3 is fixedly provided at one end of the mounting seat 4, and the inner cavity of the flange shell 1 and the outer shell 2 are arranged with a bearing seat 5 and a bearing 6 matching the ferrule assembly 8, and a ferrule assembly 8 away from the mounting seat 4 is squeezed and fixed in the inner cavity of the outer shell 2 by a mounting sleeve 7, and the cavities composed of the mounting seat 4 and the flange shell 1, the outer shell 2 and the mounting sleeve 7, and the mounting sleeve 7 and the ferrule assembly 8 are all liquid cavities 9 and are filled with pressure compensation liquid; the liquid cavity 9 in the outer shell 2 is connected to the pressure compensation assembly 11 through an external tube 10, and the pressure compensation liquid expands or contracts when subjected to changes in external temperature or pressure, synchronously driving the pressure compensation assembly 11 to perform pressure compensation.

[0021] The utility model, through the provision of a dynamic sealing assembly, can be used to ensure the overall sealing performance of the rotor shaft 3 when driving the core assembly 8 to rotate; through the provision of a liquid chamber 9 and a pressure compensation liquid, when the external temperature or pressure changes, the pressure compensation liquid can be compressed or expanded to perform pressure compensation, so as to ensure the normal function of the entire optical fiber slip ring; through the provision of an external tube 10 to connect the liquid chamber 9 and the pressure compensation assembly 11, the entire pressure compensation module is externalized, which is conducive to daily processing and assembly, and also convenient for subsequent maintenance and replacement.

[0022] Reference Figure 2 As shown, the provision of the dynamic sealing ring 12 and the dynamic sealing ring 13 effectively ensures dynamic sealing performance between the rotor shaft 3, the mounting base 4, and the flange housing 1. This ensures the sealing performance within the optical fiber slip ring during the entire rotation of the rotor shaft 3, thereby improving the stability of the entire optical fiber slip ring during long-term operation. In this embodiment, the dynamic sealing assembly includes the dynamic sealing ring 12 and the dynamic sealing ring 13. The dynamic sealing ring 12 is sleeved and mounted on the exterior of the rotor shaft 3 and fixedly connected to the flange housing 1. The dynamic sealing ring 13 is arranged between the mounting base 4 and the flange housing 1.

[0023] In this embodiment, a self-focusing microlens 81 is fused to the optical fiber and encapsulated within a ceramic ferrule, which inherently provides extremely high sealing and reliability. When the cavity is filled with liquid, light is output perpendicularly from the self-focusing lens, thus maintaining normal optical transmission. In this embodiment, the self-focusing lens is fused to the optical fiber and encapsulated within the ceramic ferrule to form a ferrule assembly 8. The light path between the two ferrule assemblies 8 is output perpendicularly from the self-focusing lens.

[0024] In this embodiment, the inner cavity of the optical fiber slip ring housing is filled with pressure compensation fluid, and the optical path between the ferrule components 8 is coupled using Glens lenses.

[0025] Reference Figure 2 As shown, in this embodiment, a plug 14 is fixedly installed at one end of the rotor shaft 3 and the outer shell 2. The optical cable is inserted into the plug 14 and communicates with the ferrule assembly 8 via the bare optical fiber. A sealing gasket 15 is provided between the mounting base 4, the outer shell 2, and the plug 14. The plug 14 and the sealing gasket 15 ensure the sealing between the plug 14 and the bare optical fiber, and improve the sealing performance between the plug 14 and the rotor shaft 3 and between the plug 14 and the outer shell 2, further improving the stability of the entire optical fiber slip ring in underwater environments.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fiber optic slip ring with an external pressure compensation device, comprising a flange housing and an outer shell, one end of the outer shell being fixedly connected to one end of the flange housing, a pair of coupled ferrule assemblies disposed within the inner cavities of the outer shell and the flange housing, one of the ferrule assemblies rotating with a rotor shaft, characterized in that: The inner cavity of the flange shell is sealed and movably connected to the mounting seat through a dynamic sealing assembly, and a rotor shaft is fixedly provided at one end of the mounting seat. The inner cavities of the flange shell and the outer shell are arranged with a bearing seat and a bearing matching the plug assembly. One of the plug assemblies away from the mounting seat is squeezed and fixed to the inner cavity of the outer shell by a mounting sleeve. The cavities composed of the mounting seat and the flange shell, the outer shell and the mounting sleeve, and the mounting sleeve and the plug assembly are all liquid cavities and are filled with pressure compensation liquid; the liquid cavity in the outer shell is connected to the pressure compensation assembly through an external tube, and the pressure compensation liquid expands or contracts when subject to changes in external temperature or pressure, synchronously driving the pressure compensation assembly to perform pressure compensation.

2. The optical fiber slip ring of the external pressure compensation device according to claim 1, characterized in that: The dynamic sealing assembly includes a dynamic sealing retaining ring and a dynamic sealing ring. The dynamic sealing retaining ring is sleeved on the outside of the rotor shaft and fixedly connected to the flange housing. The dynamic sealing ring is arranged between the mounting seat and the flange housing.

3. The optical fiber slip ring of the external pressure compensation device according to claim 1, characterized in that: A self-focusing lens is fused with an optical fiber and encapsulated inside a ceramic ferrule to form the ferrule assembly. The light path between the two ferrule assemblies is vertically output from the self-focusing lens.

4. The optical fiber slip ring of the external pressure compensation device according to claim 3, characterized in that: The inner cavity of the optical fiber slip ring housing is filled with pressure compensation fluid, and the optical path between the ferrule components is coupled by Glens lens.

5. The optical fiber slip ring of the external pressure compensation device according to claim 4, characterized in that: The rotor shaft and one end of the outer shell are both plugged and fixed with plugs, the optical cable is inserted into the plug and communicated with the core assembly through the bare optical fiber, and a sealing gasket is provided between the mounting seat, the outer shell and the plug.

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