Optical fiber slip ring with external pressure compensation device

Abstract

The invention 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. The external pressure compensation assembly is communicated with the liquid cavity of the inner cavity of the optical fiber slip ring shell, daily maintenance and replacement can be facilitated, and meanwhile the machining and assembling cost is reduced.

Description

Technical Field

[0001] The invention 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] At present, the optical fiber slip rings used for underwater hydraulic pressure only solve the problem of optical transmission, but do not solve the problem of adapting to different temperature and high pressure changes, resulting in liquid expansion, unbalanced internal and external pressure difference, and unstable inner cavity. At the same time, they all adopt the method of adding pressure compensation structure to the slip ring body, which has high requirements for sealing performance, is difficult to process and produce, and is not convenient for daily replacement and maintenance. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the present invention 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 for subsequent daily maintenance.

[0005] (II) Technical solution

[0006] 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, a pair of coupled core assemblies are arranged in the inner cavities of the outer shell and the flange shell, 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 cavities 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 through 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, the pressure compensation liquid expands or contracts when subjected to changes in external temperature or pressure, and synchronously drives the pressure compensation assembly to perform pressure compensation.

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

[0009] Preferably, a self-focusing lens is fused with an optical fiber and packaged inside a ceramic ferrule to form the ferrule assembly, and the light path between the two ferrule assemblies is vertically output 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, a plug is fixedly provided at one end of the rotor shaft and the outer shell, the optical cable is inserted into the plug and is communicatively connected with the ferrule assembly through a bare optical fiber, and a sealing gasket is provided between the mounting seat, the outer shell and the plug.

[0012] (III) Beneficial effects

[0013] The present invention 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 rotor shaft when the core assembly is driven to rotate through the provided dynamic sealing assembly; 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 for pressure compensation, so as to ensure the normal function of the entire optical fiber slip ring; the liquid chamber and the pressure compensation assembly are connected by the provided external tube, so that the entire pressure compensation assembly 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 It is a schematic diagram of the overall structure of the present invention;

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

[0017] Figure 3 It is a schematic diagram of the layout structure of the ferrule assembly of the present invention.

[0018] In the figure: 1. flange housing; 2. housing; 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 retaining 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 The present invention 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, a pair of coupled ferrule assemblies 8 are arranged in the inner cavities of the outer shell 2 and the flange shell 1, one ferrule assembly 8 rotates with the rotor shaft 3, the inner cavity of the flange shell 1 is sealed and movably connected with a mounting seat 4 through a dynamic sealing assembly, one end of the mounting seat 4 is fixedly provided with the rotor shaft 3, the inner cavities 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, a ferrule assembly 8 away from the mounting seat 4 is squeezed and fixed in the inner cavity of the outer shell 2 through a mounting sleeve 7, 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 with a pressure compensation assembly 11 through an external tube 10, the pressure compensation liquid expands or contracts when subjected to external temperature or pressure changes, and synchronously drives the pressure compensation assembly 11 to perform pressure compensation.

[0021] The present invention, 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 for pressure compensation, so as to ensure the normal function of the entire optical fiber slip ring; through the provision of an external tube 10, the liquid chamber 9 and the pressure compensation assembly 11 are connected, so that 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, by providing the dynamic sealing ring 12 and the dynamic sealing ring 13, the dynamic sealing performance between the rotor shaft 3, the mounting seat 4 and the flange housing 1 can be effectively guaranteed, and the sealing performance inside the optical fiber slip ring during the rotation of the entire rotor shaft 3 can be guaranteed, thereby improving the stability of the entire optical fiber slip ring during long-term operation. In this embodiment, the dynamic sealing assembly includes a dynamic sealing ring 12 and a dynamic sealing ring 13, the dynamic sealing ring 12 is sleeved and arranged on the outside of the rotor shaft 3 and is fixedly connected to the flange housing 1, and the dynamic sealing ring 13 is arranged between the mounting seat 4 and the flange housing 1.

[0023] In this embodiment, a self-focusing microlens 81 is fused with the optical fiber and encapsulated inside the ceramic ferrule, which has extremely high sealing and reliability. When the cavity is filled with liquid, the light is output vertically from the self-focusing lens, so it does not affect the normal transmission of the optical path. In this embodiment, a self-focusing lens is fused with the optical fiber and encapsulated inside the ceramic ferrule to form a ferrule assembly 8, and the light path between the two ferrule assemblies 8 is output vertically from the self-focusing lens.

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

[0025] Reference Figure 2 As shown, in this embodiment, a plug 14 is fixedly provided at one end of the rotor shaft 3 and the outer shell 2, the optical cable is inserted into the plug 14 and communicated with the ferrule assembly 8 through the bare optical fiber, and a sealing gasket 15 is provided between the mounting seat 4, the outer shell 2 and the plug 14. The plug 14 and the sealing gasket 15 can be used to ensure the sealing performance of the plug 14 and the bare optical fiber installation 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 the underwater environment.

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

[0027] Although 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. An optical fiber slip ring of an external pressure compensation device, comprising a flange shell and an outer shell, one end of the outer shell is fixedly connected to one end of the flange shell, a pair of coupled ferrule assemblies are arranged in the inner cavity of the outer shell and the flange shell, one of the ferrule assemblies rotates with the rotor shaft, characterized in that: The inner cavity of the flange shell is sealed and movably connected with a mounting seat through a dynamic sealing assembly, a rotor shaft is fixedly arranged at one end of the mounting seat, a bearing seat and a bearing matching the plug assembly are arranged in the inner cavity of the flange shell and the outer shell, and one of the plug assembly away from the mounting seat is squeezed and fixed to the inner cavity of the outer shell by a mounting sleeve, and 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 with a pressure compensation assembly through an external pipe, and the pressure compensation liquid expands or contracts when subjected to changes in external temperature or pressure, and synchronously drives 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 seal assembly comprises a dynamic seal retaining ring and a dynamic seal ring. The dynamic seal retaining ring is sleeved and arranged outside the rotor shaft and fixedly connected to the flange housing. The dynamic seal 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: The self-focusing lens is fused with the optical fiber and packaged inside the ceramic ferrule to form the ferrule assembly, and 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 ferrule assembly through a bare optical fiber, and sealing gaskets are provided between the mounting seat, the outer shell and the plug.

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