Underwater wet plug

Abstract

The invention provides an underwater wet plug, and relates to the technical field of underwater connection. Specifically, the device comprises a first joint, a second joint, a first rotating shaft and a second rotating shaft. Wherein the first joint comprises a first shell, a first sealing element and a first optical fiber rod, and the second joint comprises a second shell, a second sealing element and a second optical fiber rod. It can be understood that the first sealing element and the first optical fiber rod have two position relations of abutting and penetrating, and similarly, the second sealing element and the second optical fiber rod also have two position relations of abutting and penetrating. And the first rotating shaft and the second rotating shaft can respectively switch the two position relations of the first sealing element and the second sealing element, so that two different sealing environments before and after insertion are conveniently switched. Therefore, the underwater wet plug can enable the optical fiber to complete butt joint and disassembly in a stable sealed environment, thereby guaranteeing the transmission effect of the optical fiber, and prolonging the service life.

Description

Technical Field

[0001] The invention relates to the technical field of underwater connection, in particular to underwater wet plugging. Background Art

[0002] Optical connectors are designed to achieve optical fiber connection and communication. At present, the technology of dry plugging and unplugging optical connectors is very mature. However, with the development of marine oil and gas resources and the application of technologies such as underwater observation networks, optical connectors that can be directly wet plugged and unplugged underwater are becoming more and more widely used.

[0003] However, when wet plugging and unplugging is performed underwater, if the optical fiber is directly exposed to the marine environment, the influence of seawater, mud, and marine organisms will have a great impact on the optical fiber transmission effect and the service life of the optical connector. Therefore, it is necessary to provide a connector suitable for underwater wet plugging and unplugging. The wet plug connector must achieve sealing protection for the optical fiber joint before and after docking. Summary of the invention

[0004] The purpose of the present invention includes, for example, providing an underwater wet plugging and unplugging method, which can enable optical fibers to be connected and disassembled in a stable sealed environment, thereby ensuring the transmission effect of the optical fiber and improving the service life.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides an underwater wet plugging method, comprising:

[0007] A first joint, the first joint comprising a first shell, a first sealing member and a first optical fiber rod, the first optical fiber rod being accommodated in the inner cavity of the first shell, the first sealing member being provided with a first through hole, and the first sealing member being arranged at the opening of the first shell, capable of sealing the inner cavity of the first shell and abutting against the first optical fiber rod;

[0008] The second joint comprises a second shell, a second sealing member and a second optical fiber rod. The second optical fiber rod is accommodated in the inner cavity of the second shell. The second sealing member is provided with a second through hole. The second sealing member is arranged at the opening of the second shell, and can seal the inner cavity of the second shell and abut against the second optical fiber rod.

[0009] A first rotating shaft and a second rotating shaft, the first rotating shaft passes through the first shell and is connected to the first sealing member, the second rotating shaft passes through the second shell and is connected to the second sealing member, when the first shell and the second shell are engaged and form a sealed space, the first rotating shaft and the second rotating shaft are used to respectively drive the first sealing member and the second sealing member to rotate, so that the first optical fiber rod passes through the first through hole, the second optical fiber rod passes through the second through hole, and the first optical fiber rod is connected to the second optical fiber rod.

[0010] In an optional embodiment, the axis of the first rotating shaft is perpendicular to the first sealing member, and the axis of the second rotating shaft is perpendicular to the second sealing member.

[0011] In an optional embodiment, the end of the first optical fiber rod that abuts the first seal is provided with a first inclined surface and a second inclined surface, and the end of the second optical fiber rod that abuts the second seal is provided with a third inclined surface and a fourth inclined surface.

[0012] In an optional embodiment, the extension length of the first inclined surface is greater than the length of the first through hole, the extension length of the second inclined surface is greater than half the length of the first through hole; the extension length of the third inclined surface is greater than the length of the second through hole, and the extension length of the fourth inclined surface is greater than half the length of the second through hole.

[0013] In an optional embodiment, the first shell includes a first outer shell and a first floating shell, and the first joint further includes a first elastic member; the second shell includes a second outer shell and a second floating shell, and the second joint further includes a second elastic member;

[0014] One end of the first outer shell is open, the first floating shell and the first elastic member are both located in the first outer shell, and the open end of the first outer shell is slidably connected to the first floating shell, and the other end is connected to the first elastic member; and the first floating shell is provided with a first accommodating cavity for accommodating the first sealing member at one end close to the open end of the first outer shell, and the other end is connected to an end of the first elastic member away from the first outer shell;

[0015] One end of the second outer shell is open, the second floating shell and the second elastic member are both located inside the second outer shell, and the open end of the second outer shell is slidably connected to the second floating shell, and the other end is connected to the second elastic member; and the second floating shell is provided with a second accommodating cavity for accommodating the second sealing member at one end close to the open end of the second outer shell, and the other end is connected to an end of the second elastic member away from the second outer shell.

[0016] In an optional embodiment, the first floating shell includes a first floating member and a second floating member connected to each other; the second floating shell includes a third floating member and a fourth floating member connected to each other;

[0017] The first floating member and the second floating member are both located at the open end of the first outer shell, and the second floating member is connected to the first elastic member; the first floating member and the second floating member are respectively provided with a first accommodating groove and a second accommodating groove, and the first accommodating groove and the second accommodating groove together form a first accommodating cavity;

[0018] The third floating member and the fourth floating member are both located at the open end of the second outer shell, and the fourth floating member is connected to the second elastic member; the third floating member and the fourth floating member are respectively provided with a third accommodating groove and a fourth accommodating groove, and the third accommodating groove and the fourth accommodating groove together form a second accommodating cavity.

[0019] In an optional embodiment, the first outer shell is provided with a first through hole for the first rotating shaft to pass through, and the first through hole extends along the reciprocating direction of the first optical fiber rod; the second outer shell is provided with a second through hole for the second rotating shaft to pass through, and the second through hole extends along the reciprocating direction of the second optical fiber rod.

[0020] In an optional embodiment, the opening end of the first outer shell is a tapered structure, the opening end of the second outer shell is a tapered hole, and the tapered structure cooperates with the tapered hole to form a sealed space.

[0021] In an optional embodiment, the first joint also includes a third elastic member, one end of the third elastic member is connected to the first shell, and the other end is connected to the first optical fiber rod; the second joint also includes a fourth elastic member, one end of the fourth elastic member is connected to the second shell, and the other end is connected to the second optical fiber rod.

[0022] In an optional embodiment, the underwater wet plugging further includes a rotating assembly connected to an end of the first rotating shaft away from the first housing and an end of the second rotating shaft away from the second housing, for driving the first rotating shaft and the second rotating shaft to rotate synchronously.

[0023] The beneficial effects of the embodiments of the present invention include:

[0024] The present application provides an underwater wet plug-in, which includes a first joint, a second joint, a first rotating shaft and a second rotating shaft. The first joint includes a first shell, a first seal and a first optical fiber rod, and the second joint includes a second shell, a second seal and a second optical fiber rod. It can be understood that there are two positional relationships between the first seal and the first optical fiber rod, namely, abutment and penetration. Similarly, there are two positional relationships between the second seal and the second optical fiber rod. The first rotating shaft and the second rotating shaft can respectively switch the above two positional relationships between the first seal and the second seal, so as to switch between two different sealing environments before and after plug-in. Based on this, before the first joint and the second joint are docked, it is ensured that the first optical fiber rod and the second optical fiber rod are always in a stable sealed environment, and are effectively isolated from the external seawater, mud and marine organisms; when the first joint and the second joint are docked, the first shell and the second shell form a sealed space to ensure that they are isolated from the external environment during the docking process. Therefore, the underwater wet plug-in can enable the optical fiber to complete docking and disassembly in a stable sealed environment, thereby ensuring the optical fiber transmission effect and improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic top view of underwater wet plugging provided by an embodiment of the present invention;

[0027] Figure 2 The embodiment of the present invention provides Figure 1 Schematic diagram of the section along the AA direction before docking;

[0028] Figure 3 The embodiment of the present invention provides Figure 1 Schematic diagram of the cross section after docking along the AA direction;

[0029] Figure 4 A front view schematic diagram of underwater wet plugging provided by an embodiment of the present invention;

[0030] Figure 5 The embodiment of the present invention provides Figure 4 Schematic diagram of the section along the BB direction before docking;

[0031] Figure 6 The embodiment of the present invention provides Figure 4 Schematic diagram of the cross section after docking along the BB direction;

[0032] Figure 7 A schematic diagram of a first joint provided in an embodiment of the present invention;

[0033] Figure 8 The embodiment of the present invention provides Figure 7 Schematic diagram of the cross section along CC direction;

[0034] Fig. 9 A schematic diagram of a second joint provided in an embodiment of the present invention;

[0035] Fig.10 The embodiment of the present invention provides Fig. 9 Schematic diagram of the cross section along the DD direction;

[0036] Fig.11 The embodiment of the present invention provides Figure 6 A magnified schematic diagram of center A.

[0037] Icons: 10-underwater wet plugging; 100-first joint; 110-first shell; 111-conical structure; 121-first outer shell; 122-first through hole; 123-first floating shell; 124-first floating member; 125-second floating member; 130-first sealing member; 131-first through hole; 150-first optical fiber rod; 151-first inclined surface; 153-second inclined surface; 180-first oil bag; 191-first elastic member; 193-third elastic member; 195-fifth elastic member; 300-second Joint; 310-second shell; 311-conical hole; 321-second outer shell; 322-second through hole; 323-second floating shell; 324-third floating member; 325-fourth floating member; 313-drainage hole; 330-second sealing member; 331-second through hole; 350-second optical fiber rod; 351-third inclined surface; 353-fourth inclined surface; 380-second oil bag; 391-second elastic member; 393-fourth elastic member; 395-sixth elastic member; 510-first rotating shaft; 530-second rotating shaft. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0043] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0044] As mentioned in the background technology, when wet plugging is performed underwater, the optical fiber is directly exposed to the marine environment, which has a very large impact on the optical fiber transmission effect and the service life of the optical connector. In order to improve the above problems, the present application provides an underwater wet plugging device 10, which can enable the optical fiber to complete docking and disassembly in a stable sealed environment, thereby ensuring the optical fiber transmission effect and improving the service life of the underwater wet plugging device 10.

[0045] Figure 1 A top view schematic diagram of an underwater wet plug 10 provided in an embodiment of the present invention, Figure 2 The embodiment of the present invention provides Figure 1 Schematic diagram of the section along the AA direction before docking. Figure 3 The embodiment of the present invention provides Figure 1 Schematic diagram of the cross section after docking along the AA direction, please refer to Figures 1 to 3 The present invention provides an underwater wet plug 10 , which includes a first joint 100 , a second joint 300 , a first rotating shaft 510 and a second rotating shaft 530 .

[0046] Among them, the first joint 100 includes a first shell 110, a first seal 130 and a first optical fiber rod 150. The first optical fiber rod 150 is accommodated in the inner cavity of the first shell 110. The first seal 130 is provided with a first through hole 131, and the first seal 130 is arranged at the opening of the first shell 110, which can seal the inner cavity of the first shell 110 and resist the first optical fiber rod 150.

[0047] The second joint 300 includes a second shell 310, a second sealing member 330 and a second optical fiber rod 350. The second optical fiber rod 350 is accommodated in the inner cavity of the second shell 310. The second sealing member 330 is provided with a second through hole 331. The second sealing member 330 is arranged at the opening of the second shell 310, and can seal the inner cavity of the second shell 310 and abut against the second optical fiber rod 350.

[0048] The first rotating shaft 510 passes through the first shell 110 and is connected to the first sealing member 130, and the second rotating shaft 530 passes through the second shell 310 and is connected to the second sealing member 330. When the first shell 110 and the second shell 310 are engaged and form a sealed space, the first rotating shaft 510 and the second rotating shaft 530 are used to respectively drive the first sealing member 130 and the second sealing member 330 to rotate, so that the first optical fiber rod 150 passes through the first through hole 131, the second optical fiber rod 350 passes through the second through hole 331, and the first optical fiber rod 150 is connected to the second optical fiber rod 350.

[0049] Based on the above configuration, it can be understood that when the first connector 100 and the second connector 300 are not plugged in, the first seal 130 can seal the first optical fiber rod 150 in the inner cavity of the first housing 110, isolating the first optical fiber rod 150 from the external environment. Similarly, the second seal 330 can seal the second optical fiber rod 350 in the inner cavity of the second housing 310, isolating the second optical fiber rod 350 from the external environment.

[0050] When the first connector 100 and the second connector 300 are plugged in, when the first shell 110 and the second shell 310 are engaged to form a sealed space isolated from the external environment, the first rotating shaft 510 and the second rotating shaft 530 respectively drive the first seal 130 and the second seal 330 to rotate, so that the first optical fiber rod 150 passes through the first through hole 131, the second optical fiber rod 350 passes through the second through hole 331, and the first optical fiber rod 150 is connected to the second optical fiber rod 350.

[0051] That is to say, there are two positional relationships between the first seal 130 and the first optical fiber rod 150: abutment and penetration. Similarly, there are two positional relationships between the second seal 330 and the second optical fiber rod 350: abutment and penetration. The first rotating shaft 510 and the second rotating shaft 530 can respectively switch the above two positional relationships between the first seal 130 and the second seal 330, so as to switch between two different sealing environments before and after plugging.

[0052] Specifically, before the first connector 100 and the second connector 300 are docked, it is ensured that the first optical fiber rod 150 and the second optical fiber rod 350 are always in a stable and sealed environment, and are effectively isolated from external seawater, mud, and marine organisms; when the first connector 100 and the second connector 300 are docked, the first shell 110 and the second shell 310 form a sealed space to ensure isolation from the external environment during the docking process.

[0053] In addition, it should be noted that Figure 2 and Figure 3As shown, the first sealing member 130 is spherical and flattened to have four opposite end faces, and the first through hole 131 is provided through two opposite end faces. Since the second sealing member 330 is similar to the first sealing member 130, it will not be described again here.

[0054] As 2 and Figure 3 As shown, as an optional embodiment, in order to regulate the rotation angle, the axis of the first rotating shaft 510 is perpendicular to the first sealing member 130, and the axis of the second rotating shaft 530 is perpendicular to the second sealing member 330. Based on this, when the first rotating shaft 510 and the second rotating shaft 530 rotate ninety degrees, the positional relationship between the sealing member and the optical fiber rod is switched.

[0055] For further information, see Figures 4 to 6 ,in, Figure 5 The embodiment of the present invention provides Figure 4 Schematic diagram of the section along the BB direction before docking; Figure 6 The embodiment of the present invention provides Figure 4 Schematic diagram of the cross section along the BB direction after docking. In order to facilitate the first fiber rod 150 and the second fiber rod 350 to penetrate the first through hole 131 and the second through hole 331 respectively during docking, the first joint 100 also includes a third elastic member 193, one end of the third elastic member 193 is connected to the first shell 110, and the other end is connected to the first fiber rod 150; the second joint 300 also includes a fourth elastic member 393, one end of the fourth elastic member 393 is connected to the second shell 310, and the other end is connected to the second fiber rod 350.

[0056] Specifically, still taking the first optical fiber rod 150 as an example, Figure 5 As shown, before the first connector 100 and the second connector 300 are connected, the first seal 130 is sealed in the inner cavity of the first housing 110, and the first optical fiber rod 150 is subjected to the tension of the third elastic member 193 and is supported on the first seal 130; Figure 6 As shown, when the first joint 100 and the second joint 300 are docked, and the first rotating shaft 510 drives the first sealing member 130 to rotate until the first through hole 131 is aligned with the first optical fiber rod 150, the first optical fiber rod 150 penetrates the first through hole 131 and docks with the second optical fiber rod 350 which also penetrates the second through hole 331.

[0057] See also Figures 7 to 10 ,in, Figure 8 The embodiment of the present invention provides Figure 7 Schematic diagram of the cross section along the CC direction, Fig.10 The embodiment of the present invention provides Fig. 9Schematic cross-section along the DD direction. To facilitate the docking of the first joint 100 and the second joint 300, the first shell 110 includes a first outer shell 121 and a first floating shell 123, and the first joint 100 also includes a first elastic member 191; the second shell 310 includes a second outer shell 321 and a second floating shell 323, and the second joint 300 also includes a second elastic member 391.

[0058] Among them, one end of the first outer shell 121 is open, the first floating shell 123 and the first elastic member 191 are both located in the first outer shell 121, and the open end of the first outer shell 121 is slidably connected to the first floating shell 123, and the other end is connected to the first elastic member 191; and the first floating shell 123 is provided with a first accommodating cavity for accommodating the first sealing member 130 at one end close to the open end of the first outer shell 121, and the other end is connected to an end of the first elastic member 191 away from the first outer shell 121;

[0059] One end of the second outer shell 321 is open, the second floating shell 323 and the second elastic member 391 are both located inside the second outer shell 321, and the open end of the second outer shell 321 is slidably connected to the second floating shell 323, and the other end is connected to the second elastic member 391; and the second floating shell 323 is provided with a second accommodating cavity for accommodating the second sealing member 330 at one end close to the open end of the second outer shell 321, and the other end is connected to an end of the second elastic member 391 away from the second outer shell 321.

[0060] Taking the first seal 130 as an example, when the first seal 130 does not rotate, the first elastic member 191 causes the first floating member 124 to abut against the first shell 110. At this time, the blocked end face of the first seal 130 abuts against the first optical fiber rod 150, thereby forming a seal for the first optical fiber rod 150. When the first seal 130 rotates, the first floating shell 123 is separated from the second floating shell 323 and leaves a certain avoidance space through the buffering of the first elastic member 191 behind it, so as to facilitate the rotation of the first seal 130 and avoid the non-planar portion of the spherical first seal 130 from interfering with the second seal 330 during rotation.

[0061] Based on the above arrangement, on one hand, the position of the first seal 130 is limited by the first accommodating cavity, and the stability of the first seal 130 when not rotating is maintained; on the other hand, the floating arrangement of the first floating housing 123 avoids the first seal 130 from interfering with the second seal 330 when rotating. In addition, it should be noted that the rotation of the second seal 330 is similar to the above, and will not be repeated here.

[0062] Furthermore, the first outer shell 121 is provided with a first through hole 122 for the first rotating shaft 510 to pass through, and the first through hole 122 extends along the reciprocating movement direction of the first optical fiber rod 150; the second outer shell 321 is provided with a second through hole 322 for the second rotating shaft 530 to pass through, and the second through hole 322 extends along the reciprocating movement direction of the second optical fiber rod 350.

[0063] It is understandable that when the first floating shell 123 and the second floating shell 323 avoid each other, they move in opposite directions along the extension direction of the first elastic member 191 / the second elastic member 391, and the first rotating shaft 510 and the second rotating shaft 530 will also move accordingly, and the design of the first through hole 122 and the second through hole 322 reserves a movable space to avoid the first rotating shaft 510 from interfering with the first outer shell 121, and the second rotating shaft 530 from interfering with the second outer shell 321, thereby ensuring the smooth rotation of the first sealing member 130 and the second sealing member 330. Optionally, the first through hole 122 and the second through hole 322 are oval holes.

[0064] Furthermore, to facilitate the installation of the first seal 130 and the second seal 330 into the first floating shell 123 and the second floating shell 323 respectively, the first floating shell 123 includes a first floating part 124 and a second floating part 125 connected to each other; the second floating shell 323 includes a third floating part 324 and a fourth floating part 325 connected to each other.

[0065] The first floating member 124 and the second floating member 125 are both located at the open end of the first outer shell 121, and the second floating member 125 is connected to the first elastic member 191; the first floating member 124 and the second floating member 125 are respectively provided with a first receiving groove and a second receiving groove, and the first receiving groove and the second receiving groove together form a first receiving cavity;

[0066] The third floating member 324 and the fourth floating member 325 are both located at the open end of the second outer shell 321, and the fourth floating member 325 is connected to the second elastic member 391; the third floating member 324 and the fourth floating member 325 are respectively provided with a third accommodating groove and a fourth accommodating groove, and the third accommodating groove and the fourth accommodating groove together form a second accommodating cavity.

[0067] Based on the above configuration, it can be understood that the first floating housing 123 is a split structure, consisting of a first floating body and a second floating body. When installing the first seal 130, the first floating body 124 and the second floating body 125 are disassembled, the first seal 130 is installed in the first receiving groove / the second receiving groove, and then the first floating body 124 and the second floating body 125 are spliced ​​and connected. The second floating housing 323 is also a split structure, consisting of a third floating body and a fourth floating body. The installation of the first seal 130 is similar to the above, and will not be repeated here.

[0068] See again Figure 8 and Fig.10 In order to ensure the sealing effect of the sealed space, the opening end of the first outer shell 121 is a tapered structure 111, and the opening end of the second outer shell 321 is a tapered hole 311. The tapered structure 111 cooperates with the tapered hole 311 to form a sealed space. It can be understood that the tapered structure 111 can ensure a sealed environment inside the first shell 110 and the second shell 310 in the docking state, thereby improving the stability and reliability of the system. In addition, a plurality of drainage holes 313 are provided on the hole wall of the tapered hole 311, which are used to guide the discharge of seawater during docking to avoid seawater retention.

[0069] Also, please refer again to Figure 8 and Fig.10 The first joint 100 also includes a first oil sac 180, and a first cavity for accommodating seawater is formed between the first oil sac 180 and the first outer shell 121, and a fifth elastic member 195 is arranged in the first oil sac 180; the second joint 300 also includes a second oil sac 380, and a second cavity for accommodating seawater is formed between the second oil sac 380 and the second outer shell 321, and a sixth elastic member 395 is arranged in the second oil sac.

[0070] When the first joint 100 and the second joint 300 are working underwater, seawater can enter the first oil bag 180 or the outside of the second oil bag 380 from the openings on the circumference of the first outer shell 121 and the second outer shell 321, ensuring that the internal and external pressures of the first joint 100 and the second joint 300 are balanced and will not be affected by external pressure, causing the sealing failure of the first joint 100 and the second joint 300.

[0071] See also Fig.11 , Fig.11 The embodiment of the present invention provides Figure 6 The enlarged schematic diagram of A in the middle. The first fiber rod 150 has a first inclined surface 151 and a second inclined surface 153 disposed opposite to the end that abuts against the first seal 130 , and the second fiber rod 350 has a third inclined surface 351 and a fourth inclined surface 353 disposed opposite to the end that abuts against the second seal 330 .

[0072] Specifically, still taking the first optical fiber rod 150 as an example, when the first connector 100 and the second connector 300 are docked, during the recovery phase after the plugging is completed, the first rotating shaft 510 drives the first sealing member 130 to rotate, so that it can abut against the first inclined surface 151 and / or the second inclined surface 153, generate thrust, and push the first optical fiber rod 150 to move in a direction away from the first through hole 131. During this process, the third elastic member 193 is compressed by force until the first optical fiber rod 150 completely withdraws from the first through hole 131 and abuts against the first sealing member 130, that is, the first optical fiber is sealed again. In addition, the working principle of the second optical fiber rod 350 is similar to that of the first optical fiber rod 150, which will not be repeated here.

[0073] Furthermore, to prevent the optical fiber rod from interfering with the hole wall when exiting the through hole, the extension length of the first inclined surface 151 is greater than the length of the first through hole 131, and the extension length of the second inclined surface 153 is greater than half the length of the first through hole 131; the extension length of the third inclined surface 351 is greater than the length of the second through hole 331, and the extension length of the fourth inclined surface 353 is greater than half the length of the second through hole 331. Specifically, the extension direction is along the axial direction of the first optical fiber rod 150 or the second optical fiber rod 350.

[0074] In addition, the underwater wet plugging 10 further includes a rotating assembly, which is connected to one end of the first rotating shaft 510 away from the first housing 110 and one end of the second rotating shaft 530 away from the second housing 310, and is used to drive the first rotating shaft 510 and the second rotating shaft 530 to rotate synchronously.

[0075] Based on the above configuration, it can be understood that the rotating assembly drives the first seal 130 to rotate through the first rotating shaft 510, and drives the second seal 330 to rotate through the second rotating shaft 530, so as to switch the two position relationships of abutment and penetration between the corresponding seal and the optical fiber rod. In addition, it is also necessary to explain that the rotating assembly is an operating assembly of the underwater wet plug 10, and after the underwater wet plug 10 optical fiber transmission assembly completes the docking operation, it can be recovered.

[0076] Taking this embodiment as an example, the working principle and workflow of underwater wet plugging 10 are as follows:

[0077] When the first connector 100 and the second connector 300 are not plugged in, the first seal 130 can seal the first optical fiber rod 150 in the inner cavity of the first housing 110, isolating the first optical fiber rod 150 from the external environment. At this time, one end of the first optical fiber rod 150 abuts against the first seal 130, and the other end presses and acts on the third elastic member 193, so that the third elastic member 193 is in a compressed state. Similarly, the second seal 330 can seal the second optical fiber rod 350 in the inner cavity of the second housing 310, isolating the second optical fiber rod 350 from the external environment. At this time, one end of the second optical fiber rod 350 abuts against the second seal 330, and the other end presses and acts on the fourth elastic member 393, so that the fourth elastic member 393 is in a compressed state.

[0078] During the plugging process of the first connector 100 and the second connector 300, the conical structure 111 and the conical hole 311 engage with each other to form a sealed space, and the rotating assembly drives the first rotating shaft 510 and the second rotating shaft 530 to rotate synchronously by 90 degrees, thereby driving the first seal 130 and the second seal 330 to rotate respectively; during this process, the first floating member 124 and the second floating member 125 can avoid the interference between the first seal 130 and the second seal 330 during rotation through the buffering effect of the first elastic member 191 and the second elastic member 391 behind them. The first optical fiber rod 150, under the action of the third elastic member 193, penetrates the first through hole 131 opened on the first seal 130, and the second optical fiber rod 350, under the action of the fourth elastic member 393, penetrates the second through hole 331 opened on the second seal 330, and the two are connected.

[0079] When the first joint 100 and the second joint 300 are disassembled and recycled, the first rotating shaft 510 drives the first sealing member 130 to rotate, so that it can abut against the first inclined surface 151 and / or the second inclined surface 153, generate thrust, and push the first optical fiber rod 150 to move in the direction away from the first through hole 131. During this process, the third elastic member 193 is compressed by force until the first optical fiber rod 150 completely withdraws from the first through hole 131 and abuts against the first sealing member 130, that is, the first optical fiber rod 150 is sealed again. In addition, during this process, the second rotating shaft 530 drives the second sealing member 330 to rotate synchronously. Considering that the working principle of the second optical fiber rod 350 is similar to that of the first optical fiber rod 150, it will not be repeated here. Then, the first joint 100 and the second joint 300 are separated, and the sealed space is removed.

[0080] In summary, the present application provides an underwater wet plug 10, which includes a first joint 100, a second joint 300, a first rotating shaft 510 and a second rotating shaft 530. Among them, the first joint 100 includes a first shell 110, a first seal 130 and a first optical fiber rod 150, and the second joint 300 includes a second shell 310, a second seal 330 and a second optical fiber rod 350. It can be understood that there are two positional relationships between the first seal 130 and the first optical fiber rod 150, namely, abutment and penetration. Similarly, there are two positional relationships between the second seal 330 and the second optical fiber rod 350, namely, abutment and penetration. The first rotating shaft 510 and the second rotating shaft 530 can respectively switch the above two positional relationships between the first seal 130 and the second seal 330, so as to switch between two different sealing environments before and after plugging. Based on this, before the first connector 100 and the second connector 300 are connected, it is ensured that the first optical fiber rod 150 and the second optical fiber rod 350 are always in a stable and sealed environment, and are effectively isolated from the external seawater, mud and marine organisms; when the first connector 100 and the second connector 300 are connected, the first shell 110 and the second shell 310 form a sealed space to ensure isolation from the external environment during the connection process. Therefore, the underwater wet plugging 10 can complete the connection and removal of optical fibers in a stable and sealed environment, thereby ensuring the optical fiber transmission effect and improving the service life.

[0081] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An underwater wet plug-in, characterized in that: include: A first connector (100), the first connector (100) comprising a first shell (110), a first sealing member (130) and a first optical fiber rod (150), the first optical fiber rod (150) being accommodated in an inner cavity of the first shell (110), the first sealing member (130) being provided with a first through hole (131), and the first sealing member (130) being arranged at an opening of the first shell (110), capable of sealing the inner cavity of the first shell (110) and abutting against the first optical fiber rod (150); A second connector (300), the second connector (300) comprising a second shell (310), a second sealing member (330) and a second optical fiber rod (350), the second optical fiber rod (350) being accommodated in the inner cavity of the second shell (310), the second sealing member (330) being provided with a second through hole (331), and the second sealing member (330) being arranged at the opening of the second shell (310), capable of sealing the inner cavity of the second shell (310) and abutting against the second optical fiber rod (350); A first rotating shaft (510) and a second rotating shaft (530), wherein the first rotating shaft (510) passes through the first shell (110) and is connected to the first sealing member (130), and the second rotating shaft (530) passes through the second shell (310) and is connected to the second sealing member (330). When the first shell (110) and the second shell (310) are engaged with each other to form a sealed space, the first rotating shaft (510) and the second rotating shaft (530) are used to respectively drive the first sealing member (130) and the second sealing member (330) to rotate, so that the first optical fiber rod (150) passes through the first through hole (131), the second optical fiber rod (350) passes through the second through hole (331), and the first optical fiber rod (150) and the second optical fiber rod (350) are butt-jointed.

2. The underwater wet plugging method according to claim 1, characterized in that: The axis of the first rotating shaft (510) is perpendicular to the first sealing member (130), and the axis of the second rotating shaft (530) is perpendicular to the second sealing member (330).

3. The underwater wet plugging method according to claim 1, characterized in that: One end of the first optical fiber rod (150) that abuts against the first sealing member (130) is provided with a first inclined surface (151) and a second inclined surface (153) opposite to each other, and one end of the second optical fiber rod (350) that abuts against the second sealing member (330) is provided with a third inclined surface (351) and a fourth inclined surface (353) opposite to each other.

4. The underwater wet plugging method according to claim 3, characterized in that: The extension length of the first inclined surface (151) is greater than the length of the first through hole (131), and the extension length of the second inclined surface (153) is greater than half the length of the first through hole (131); the extension length of the third inclined surface (351) is greater than the length of the second through hole (331), and the extension length of the fourth inclined surface (353) is greater than half the length of the second through hole (331).

5. The underwater wet plugging method according to claim 1, characterized in that: The first shell (110) includes a first outer shell (121) and a first floating shell (123), and the first joint (100) further includes a first elastic member (191); the second shell (310) includes a second outer shell (321) and a second floating shell (323), and the second joint (300) further includes a second elastic member (391); One end of the first outer shell (121) is open, the first floating shell (123) and the first elastic member (191) are both located in the first outer shell (121), and the open end of the first outer shell (121) is slidably connected to the first floating shell (123), and the other end is connected to the first elastic member (191); and one end of the first floating shell (123) close to the open end of the first outer shell (121) is provided with a first accommodating cavity for accommodating the first sealing member (130), and the other end is connected to an end of the first elastic member (191) away from the first outer shell (121); One end of the second outer shell (321) is open, the second floating shell (323) and the second elastic member (391) are both located inside the second outer shell (321), and the open end of the second outer shell (321) is slidably connected to the second floating shell (323), and the other end is connected to the second elastic member (391); and the second floating shell (323) has one end close to the open end of the second outer shell (321) provided with a second accommodating cavity for accommodating the second sealing member (330), and the other end is connected to one end of the second elastic member (391) away from the second outer shell (321).

6. The underwater wet plugging method according to claim 5, characterized in that: The first floating shell (123) includes a first floating member (124) and a second floating member (125) connected to each other; the second floating shell (323) includes a third floating member (324) and a fourth floating member (325) connected to each other; The first floating member (124) and the second floating member (125) are both located at the open end of the first outer shell (121), and the second floating member (125) is connected to the first elastic member (191); the first floating member (124) and the second floating member (125) are respectively provided with a first accommodating groove and a second accommodating groove, and the first accommodating groove and the second accommodating groove together form the first accommodating cavity; The third floating member (324) and the fourth floating member (325) are both located at the open end of the second outer shell (321), and the fourth floating member (325) is connected to the second elastic member (391); the third floating member (324) and the fourth floating member (325) are respectively provided with a third accommodating groove and a fourth accommodating groove, and the third accommodating groove and the fourth accommodating groove together form the second accommodating cavity.

7. The underwater wet plugging method according to claim 5, characterized in that: The first outer shell (121) is provided with a first through hole (122) for the first rotating shaft (510) to pass through, and the first through hole (122) extends along the reciprocating movement direction of the first optical fiber rod (150); the second outer shell (321) is provided with a second through hole (322) for the second rotating shaft (530) to pass through, and the second through hole (322) extends along the reciprocating movement direction of the second optical fiber rod (350).

8. The underwater wet plugging method according to claim 5, characterized in that: The opening end of the first outer shell (121) is a conical structure (111), and the opening end of the second outer shell (321) is a conical hole (311), and the conical structure (111) cooperates with the conical hole (311) to form the sealed space.

9. The underwater wet plugging method according to claim 1, characterized in that: The first joint (100) further comprises a third elastic member (193), one end of the third elastic member (193) being connected to the first shell (110), and the other end being connected to the first optical fiber rod (150); the second joint (300) further comprises a fourth elastic member (393), one end of the fourth elastic member (393) being connected to the second shell (310), and the other end being connected to the second optical fiber rod (350).

10. The underwater wet plugging method according to any one of claims 1 to 9, characterized in that: The underwater wet plugging (10) further comprises a rotating assembly, which is connected to an end of the first rotating shaft (510) away from the first housing (110) and an end of the second rotating shaft (530) away from the second housing (310), and is used to drive the first rotating shaft (510) and the second rotating shaft (530) to rotate synchronously.

Images