An underwater wet plug

Abstract

The application provides an underwater wet plug, and relates to the technical field of underwater connection. Specifically, it comprises a first connector, a second connector, a first rotating shaft and a second rotating shaft. The first connector comprises a first shell, a first sealing element and a first optical fiber rod, and the second connector 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 positional relationships of abutment and penetration, and the second sealing element and the second optical fiber rod also have two positional relationships of abutment and penetration. The first rotating shaft and the second rotating shaft can switch the above two positional relationships of the first sealing element and the second sealing element, so as to switch two different sealing environments before and after plugging. Therefore, the underwater wet plug can make the optical fiber complete connection and disassembly in a stable sealing environment, so as to ensure the optical fiber transmission effect and improve the service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underwater connection, in particular to an underwater wet plug. BACKGROUND

[0002] The optical joint is designed for realizing the connection and communication of optical fibers. At present, the technology of dry plug optical joint is very mature. However, with the development of ocean oil and gas resources and the application of underwater observation network technology, the application of underwater wet plug optical joint is becoming more and more widespread.

[0003] However, when wet plug is performed underwater, if the optical fiber is directly exposed to the marine environment, the transmission effect of the optical fiber and the service life of the optical joint will be greatly affected due to the influence of seawater, silt and marine organisms. Therefore, a connector suitable for underwater wet plug environment is needed. The wet plug connector needs to realize the sealing protection of the optical fiber joint before and after the butt joint. SUMMARY

[0004] The purpose of the present application includes, for example, providing an underwater wet plug which can enable the optical fiber to complete the butt joint and disassembly 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 application can be implemented as follows:

[0006] In a first aspect, the present application provides an underwater wet plug, comprising:

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

[0008] A second joint, the second joint comprising a second housing, a second sealing member and a second optical fiber rod, the second optical fiber rod being accommodated in an inner cavity of the second housing, the second sealing member being provided at an opening of the second housing and capable of sealing the inner cavity of the second housing and abutting against the second optical fiber rod;

[0009] A first rotating shaft and a second rotating shaft, the first rotating shaft penetrating the first housing and connecting the first sealing member, the second rotating shaft penetrating the second housing and connecting the second sealing member, in the case that the first housing and the second housing are clamped and a sealed space is formed, the first rotating shaft and the second rotating shaft are used to drive the first sealing member and the second sealing member to rotate respectively, so that the first optical fiber rod penetrates the first through hole, the second optical fiber rod penetrates the second through hole, and the first optical fiber rod and the second optical fiber rod are butted.

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

[0011] In an optional embodiment, the end of the first optical fiber rod opposite to the end abutting against the first seal is provided with a first inclined surface and a second inclined surface, and the end of the second optical fiber rod opposite to the end abutting against 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, and the extension length of the second inclined surface is greater than half of 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 of the length of the second through hole.

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

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

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

[0016] In an optional embodiment, the first floating shell body comprises a first floating member and a second floating member connected with each other; and the second floating shell body comprises a third floating member and a fourth floating member connected with each other.

[0017] The first floating member and the second floating member are located at the open end of the first outer shell body, and the second floating member is connected with 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 jointly form the first accommodating cavity.

[0018] The third floating member and the fourth floating member are located at the open end of the second outer shell body, and the fourth floating member is connected with 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 jointly form the second accommodating cavity.

[0019] In an optional embodiment, the first 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 movement direction of the first optical fiber rod; the second 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 movement direction of the second optical fiber rod.

[0020] In an optional embodiment, the opening end of the first shell is a tapered structure, and the opening end of the second 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 connector further comprises a third elastic member, one end of the third elastic member is connected with the first shell, and the other end is connected with the first optical fiber rod; the second connector further comprises a fourth elastic member, one end of the fourth elastic member is connected with the second shell, and the other end is connected with the second optical fiber rod.

[0022] In an optional embodiment, the underwater wet plug further comprises a rotating assembly connected with the one end of the first rotating shaft away from the first shell and the one end of the second rotating shaft away from the second shell, for driving the first rotating shaft and the second rotating shaft to rotate synchronously.

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

[0024] The present application provides an underwater wet plug, which comprises a first connector, a second connector, a first rotating shaft and a second rotating shaft. The first connector comprises a first shell, a first sealing member and a first optical fiber rod, and the second connector comprises a second shell, a second sealing member and a second optical fiber rod. It can be understood that there are two position relationships of abutment and passing through between the first sealing member and the first optical fiber rod, and similarly, there are also two position relationships of abutment and passing through between the second sealing member and the second optical fiber rod. The first rotating shaft and the second rotating shaft can switch the above-mentioned two position relationships of the first sealing member and the second sealing member respectively, so as to switch two different sealing environments before and after plugging. Based on this, before the first connector and the second connector are connected, it is ensured that the first optical fiber rod and the second optical fiber rod are always in a stable sealing environment, and are effectively isolated from seawater, silt and marine organisms and the like outside; when the first connector and the second connector are connected, the first shell and the second shell form a sealed space, so as to ensure isolation from the external environment during the connection process. Therefore, the underwater wet plug can enable the optical fiber to complete the connection and disassembly in a stable sealing environment, so as to ensure the optical fiber transmission effect and improve the service life. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 The underwater wet plug-in and plug-out top view schematic diagram provided by the embodiments of the present application;

[0027] Figure 2 The underwater wet plug-in and plug-out top view schematic diagram provided by the embodiments of the present application; Figure 1 The cross-sectional view along the A-A direction before docking schematic diagram;

[0028] Figure 3 The underwater wet plug-in and plug-out top view schematic diagram provided by the embodiments of the present application; Figure 1 The cross-sectional view along the A-A direction after docking schematic diagram;

[0029] Figure 4 The underwater wet plug-in and plug-out top view schematic diagram provided by the embodiments of the present application;

[0030] Figure 5 The underwater wet plug-in and plug-out top view schematic diagram provided by the embodiments of the present application; Figure 4 The cross-sectional view along the B-B direction before docking schematic diagram;

[0031] Figure 6 The underwater wet plug-in and plug-out top view schematic diagram provided by the embodiments of the present application; Figure 4 The cross-sectional view along the B-B direction after docking schematic diagram;

[0032] Figure 7 The first joint schematic diagram provided by the embodiments of the present application;

[0033] Figure 8 The underwater wet plug-in and plug-out top view schematic diagram provided by the embodiments of the present application; Figure 7 The cross-sectional view along the C-C direction schematic diagram;

[0034] Figure 9 The second joint schematic diagram provided by the embodiments of the present application;

[0035] Figure 10 The underwater wet plug-in and plug-out top view schematic diagram provided by the embodiments of the present application; Figure 9 The cross-sectional view along the D-D direction schematic diagram;

[0036] Figure 11 The underwater wet plug-in and plug-out top view schematic diagram provided by the embodiments of the present application; Figure 6 The enlarged schematic diagram at A in the middle.

[0037] Icon: 10 - underwater wet plug; 100 - first connector; 110 - first housing; 111 - tapered structure; 121 - first outer housing; 122 - first through hole; 123 - first floating housing; 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 bladder; 191 - first elastic member; 193 - third elastic member; 195 - fifth elastic member; 300 - second connector; 310 - second housing; 311 - tapered hole; 321 - second outer housing; 322 - second through hole; 323 - second floating housing; 324 - third floating member; 325 - fourth floating member; 313 - drain 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 bladder; 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 objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0040] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is used, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0042] In addition, if the terms "first", "second" and the like are used herein, they are merely used to distinguish one feature from another, and do not imply or suggest relative importance.

[0043] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0044] As the background art, when wet plugging is carried out underwater, the optical fiber is directly exposed to the marine environment, which has a great influence on the transmission effect of the optical fiber and the service life of the optical joint. In order to improve the above problems, the present application provides an underwater wet plugging 10, which can make the optical fiber complete the docking and disassembly in a stable sealed environment, so as to ensure the transmission effect of the optical fiber and improve the service life of the underwater wet plugging 10.

[0045] Figure 1 The underwater wet plugging 10 provided by the embodiments of the present application is a top view schematic diagram, Figure 2 The underwater wet plugging 10 provided by the embodiments of the present application is a top view schematic diagram, Figure 1 The cross-sectional view along the A-A direction before docking is shown in the schematic diagram, Figure 3 The underwater wet plugging 10 provided by the embodiments of the present application is a top view schematic diagram, Figure 1 The cross-sectional view along the A-A direction after docking is shown in the schematic diagram, please refer to Figures 1 to 3 The present application provides an underwater wet plugging 10, which comprises a first joint 100, a second joint 300, a first rotating shaft 510 and a second rotating shaft 530.

[0046] The first joint 100 comprises a first shell 110, a first sealing member 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 sealing member 130 is provided at the opening of the first shell 110 and can seal the inner cavity of the first shell 110 and abut against the first optical fiber rod 150.

[0047] The second joint 300 comprises 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 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 is connected with the first shell 110 and the first sealing member 130, and the second rotating shaft 530 is connected with the second shell 310 and the second sealing member 330. When the first shell 110 and the second shell 310 are clamped and a sealed space is formed, the first rotating shaft 510 and the second rotating shaft 530 are used to drive the first sealing member 130 and the second sealing member 330 to rotate, respectively, 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 connected.

[0049] Based on the above arrangement, it can be understood that, in the case where the first connector 100 and the second connector 300 are not inserted, the first sealing member 130 can seal the first optical fiber rod 150 in the inner cavity of the first shell 110, and isolate the first optical fiber rod 150 from the external environment. Similarly, the second sealing member 330 can seal the second optical fiber rod 350 in the inner cavity of the second shell 310, and isolate the second optical fiber rod 350 from the external environment.

[0050] And in the case where the first connector 100 and the second connector 300 are inserted, when the first shell 110 and the second shell 310 are clamped to form a sealed space isolated from the external environment, the first rotating shaft 510 and the second rotating shaft 530 drive the first sealing member 130 and the second sealing member 330 to rotate, respectively, 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 connected.

[0051] That is to say, there are two position relationships of abutment and passing between the first sealing member 130 and the first optical fiber rod 150, and similarly, there are also two position relationships of abutment and passing between the second sealing member 330 and the second optical fiber rod 350. The first rotating shaft 510 and the second rotating shaft 530 can switch the above two position relationships of the first sealing member 130 and the second sealing member 330, respectively, so as to switch the two different sealing environments before and after the insertion.

[0052] Specifically, 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 sealed environment, and are effectively isolated from the external seawater, silt 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, which ensures that the external environment is isolated during the connection process.

[0053] In addition, it should be noted that, as Figure 2 and Figure 3As shown, the first sealing member 130 is spherical, and is flattened with four end faces opposite to each other, and the first through hole 131 is arranged on the opposite end faces. Since the second sealing member 330 is similar to the first sealing member 130, details are not repeated here.

[0054] As shown in 2 and Figure 3 As shown, as an optional embodiment, 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 by ninety degrees, the position relationship of the sealing member and the optical fiber rod is switched.

[0055] Further, please refer to Figures 4 to 6 , wherein, Figure 5 The first optical fiber rod 150 and the second optical fiber rod 350 are respectively arranged in the first through hole 131 and the second through hole 331. Figure 4 The cross-sectional view along the B-B direction before abutting; Figure 6 The first optical fiber rod 150 and the second optical fiber rod 350 are respectively arranged in the first through hole 131 and the second through hole 331. Figure 4 The cross-sectional view along the B-B direction after abutting. In order to facilitate the first optical fiber rod 150 and the second optical fiber rod 350 to pass through the first through hole 131 and the second through hole 331 respectively when abutting, the first connector 100 further comprises a third elastic member 193, one end of the third elastic member 193 is connected with the first shell 110, and the other end is connected with the first optical fiber rod 150; the second connector 300 further comprises a fourth elastic member 393, one end of the fourth elastic member 393 is connected with the second shell 310, and the other end is connected with the second optical fiber rod 350.

[0056] Specifically, still taking the first optical fiber rod 150 as an example, as shown in Figure 5 Before the first connector 100 and the second connector 300 abut, the first sealing member 130 is sealed in the inner cavity of the first shell 110, and the first optical fiber rod 150 is subjected to the tension of the third elastic member 193 and abuts on the first sealing member 130; as shown in Figure 6 When the first connector 100 and the second connector 300 abut, and the first rotating shaft 510 drives the first sealing member 130 to rotate to the first through hole 131 aligning with the first optical fiber rod 150, the first optical fiber rod 150 passes through the first through hole 131 and abuts with the second optical fiber rod 350 which also passes through the second through hole 331.

[0057] Please refer to Figures 7 to 10 , wherein, Figure 8 The first optical fiber rod 150 and the second optical fiber rod 350 are respectively arranged in the first through hole 131 and the second through hole 331. Figure 7 The cross-sectional view along the C-C direction, Figure 10 The first optical fiber rod 150 and the second optical fiber rod 350 are respectively arranged in the first through hole 131 and the second through hole 331. Figure 9The schematic view along the D-D direction. In order to realize the butt joint of the first joint 100 and the second joint 300, the first shell 110 comprises a first outer shell 121 and a first floating shell 123, and the first joint 100 further comprises a first elastic member 191; the second shell 310 comprises a second outer shell 321 and a second floating shell 323, and the second joint 300 further comprises a second elastic member 391.

[0058] The first outer shell 121 is open at one end, the first floating shell 123 and the first elastic member 191 are located in the first outer shell 121, and the open end of the first outer shell 121 is slidably connected with the first floating shell 123, and the other end is connected with 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 with the end of the first elastic member 191 away from the first outer shell 121.

[0059] The second outer shell 321 is open at one end, the second floating shell 323 and the second elastic member 391 are located in the second outer shell 321, and the open end of the second outer shell 321 is slidably connected with the second floating shell 323, and the other end is connected with 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 with the end of the second elastic member 391 away from the second outer shell 321.

[0060] Taking the first sealing member 130 as an example, when the first sealing member 130 does not rotate, the first elastic member 191 makes the first floating member 124 abut against the first shell 110, at this time, the end surface of the first sealing member 130 abuts against the first optical fiber rod 150, forming a seal for the first optical fiber rod 150; when the first sealing member 130 rotates, the first floating shell 123 is separated from the second floating shell 323 through the buffer of the first elastic member 191 behind it and leaves a certain avoiding space, so as to facilitate the rotation of the first sealing member 130, and avoid the interference between the non-planar part of the first sealing member 130 in the form of a ball and the second sealing member 330 when rotating.

[0061] Based on the above setting, on the one hand, the position of the first sealing member 130 is limited by the first accommodating cavity, and the stability of the first sealing member 130 when not rotating is maintained; on the other hand, the interference between the first sealing member 130 and the second sealing member 330 when rotating is avoided through the floating setting of the first floating shell 123. In addition, it should be noted that the rotation of the second sealing member 330 is similar to the above, which will not be described here.

[0062] Further, 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 can be understood that when the first floating shell 123 and the second floating shell 323 avoid each other, they move away along the extension direction of the first elastic member 191 / second elastic member 391, at this time, the first rotating shaft 510 and the second rotating shaft 530 will also move, and the design of the first through hole 122 and the second through hole 322 reserves a moving space to avoid the first rotating shaft 510 interfering with the first outer shell 121 and the second rotating shaft 530 interfering with the second outer shell 321, thereby ensuring the smooth rotation of the first sealing member 130 and the second sealing member 330. Alternatively, the first through hole 122 and the second through hole 322 are waist round holes.

[0064] Further, in order to facilitate the installation of the first sealing member 130 and the second sealing member 330 into the first floating shell 123 and the second floating shell 323 respectively, the first floating shell 123 comprises a first floating member 124 and a second floating member 125 connected to each other; the second floating shell 323 comprises a third floating member 324 and a fourth floating member 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 with 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 jointly form a first accommodating 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 with 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 jointly form a second accommodating cavity.

[0067] Based on the above setting, it can be understood that the first floating shell 123 is a split structure, which is composed of a first floating body and a second floating body. When the first sealing member 130 is installed, the first floating member 124 and the second floating member 125 are disassembled, the first sealing member 130 is installed into the first accommodating groove / second accommodating groove, and then the first floating member 124 and the second floating member 125 are connected again. The second floating shell 323 is also a split structure, which is composed of a third floating body and a fourth floating body. The installation of the first sealing member 130 is similar to the above, which will not be described here.

[0068] Again referring to Figure 8 and Figure 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, the hole wall of the tapered hole 311 is provided with a plurality of drainage holes 313 for guiding seawater out during docking to avoid seawater retention.

[0069] In addition, referring again to Figure 8 and Figure 10 , the first joint 100 further comprises a first oil bag 180, and a first cavity for accommodating seawater is formed between the first oil bag 180 and the first outer shell 121, and the first oil bag 180 is provided with a fifth elastic member 195; the second joint 300 further comprises a second oil bag 380, and a second cavity for accommodating seawater is formed between the second oil bag 380 and the second outer shell 321, and the second oil bag is provided with a sixth elastic member 395.

[0070] When the first joint 100 and the second joint 300 are working underwater, seawater can enter the outside of the first oil bag 180 or 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 pressure of the first joint 100 and the second joint 300 is balanced, and they will not be affected by external pressure, causing the sealing failure of the first joint 100 and the second joint 300.

[0071] Please refer to Figure 11 , Figure 11 is an enlarged schematic view of A in Figure 6 provided by the embodiment of the present application. The first optical fiber rod 150 is provided with a first inclined surface 151 and a second inclined surface 153 opposite to the end abutting against the first sealing member 130, and the second optical fiber rod 350 is provided with a third inclined surface 351 and a fourth inclined surface 353 opposite to the end abutting against the second sealing member 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, 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 to generate a pushing force and push the first optical fiber rod 150 to move away from the first through hole 131. During this process, the third elastic member 193 is compressed under stress until the first optical fiber rod 150 completely exits 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 described here.

[0073] Further, to avoid interference between the optical fiber rod and the hole wall when the optical fiber rod exits 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. The extension direction is specifically along the axial direction of the first optical fiber rod 150 or the second optical fiber rod 350.

[0074] In addition, the underwater wet plug 10 also includes a rotating assembly connected to the end of the first rotating shaft 510 away from the first housing 110 and the end of the second rotating shaft 530 away from the second housing 310, for driving the first rotating shaft 510 and the second rotating shaft 530 to rotate synchronously.

[0075] Based on the above settings, it can be understood that the rotating assembly drives the first sealing member 130 to rotate through the first rotating shaft 510, and drives the second sealing member 330 to rotate through the second rotating shaft 530, so as to switch the abutment and the penetration between the corresponding sealing member and the optical fiber rod, respectively. In addition, it should be noted that the rotating assembly is an operating assembly of the underwater wet plug 10, which can be recovered after the optical fiber transmission assembly of the underwater wet plug 10 completes the docking operation.

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

[0077] When the first connector 100 and the second connector 300 are not plugged, the first seal 130 can seal the first optical fiber rod 150 in the inner cavity of the first housing 110, and isolate 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 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, and isolate 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 the fourth elastic member 393, so that the fourth elastic member 393 is in a compressed state.

[0078] During the plugging of the first connector 100 and the second connector 300, the tapered structure 111 and the tapered hole 311 are engaged with each other to form a sealed space, and the rotation 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 interference of the first seal 130 and the second seal 330 during rotation through the buffering action of the first elastic member 191 and the second elastic member 391 behind them. The first optical fiber rod 150 passes through the first through hole 131 in the first seal 130 under the action of the third elastic member 193, and the second optical fiber rod 350 passes through the second through hole 331 in the second seal 330 under the action of the fourth elastic member 393, and the two are connected.

[0079] When the first connector 100 and the second connector 300 are disassembled and recycled, the first rotating shaft 510 drives the first seal 130 to rotate, so that it can abut against the first inclined surface 151 and / or the second inclined surface 153 to generate a pushing force and push the first optical fiber rod 150 to move away from the first through hole 131. During this process, the third elastic member 193 is compressed under stress until the first optical fiber rod 150 completely exits the first through hole 131 and abuts against the first seal 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 seal 330 to rotate synchronously, and 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 described here. Then, the first connector 100 and the second connector 300 are separated, and the sealed space is removed.

[0080] In summary, the application provides an underwater wet plug 10, which comprises a first connector 100, a second connector 300, a first rotating shaft 510 and a second rotating shaft 530. The first connector 100 comprises a first shell 110, a first sealing element 130 and a first optical fiber rod 150, and the second connector 300 comprises a second shell 310, a second sealing element 330 and a second optical fiber rod 350. It can be understood that the first sealing element 130 and the first optical fiber rod 150 have two position relationships of abutting and penetrating, and the second sealing element 330 and the second optical fiber rod 350 also have two position relationships of abutting and penetrating. The first rotating shaft 510 and the second rotating shaft 530 can switch the above two position relationships of the first sealing element 130 and the second sealing element 330, so as to switch two different sealing environments before and after plugging. Based on this, before the first connector 100 and the second connector 300 are connected, the first optical fiber rod 150 and the second optical fiber rod 350 are always in a stable sealing environment, which is effectively isolated from seawater, silt and marine organisms and the like. 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, which ensures isolation from the external environment during the connection process. Therefore, the underwater wet plug 10 can make the optical fiber complete the connection and disassembly in a stable sealing environment, so as to ensure the optical fiber transmission effect and improve the service life.

[0081] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto. Any changes or replacements within the technical range disclosed by the application can be easily thought by those skilled in the art, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. An underwater wet mateable, characterized in that, The utility model relates to a fiber joint, comprising: a first joint (100) comprising a first housing (110), a first sealing member (130), and a first optical fiber rod (150) accommodated in an inner cavity of the first housing (110), the first sealing member (130) having a first through hole (131) and being arranged at an opening of the first housing (110) to seal the inner cavity of the first housing (110) and abut against the first optical fiber rod (150); a second joint (300) comprising a second housing (310), a second sealing member (330), and a second optical fiber rod (350) accommodated in an inner cavity of the second housing (310), the second sealing member (330) having a second through hole (331) and being arranged at an opening of the second housing (310) to seal the inner cavity of the second housing (310) and abut against the second optical fiber rod (350); a first rotating shaft (510) penetrating the first housing (110) and connected with the first sealing member (130), and a second rotating shaft (530) penetrating the second housing (310) and connected with the second sealing member (330), the first rotating shaft (510) and the second rotating shaft (530) being used to drive the first sealing member (130) and the second sealing member (330) to rotate, respectively, so that the first optical fiber rod (150) penetrates the first through hole (131), the second optical fiber rod (350) penetrates the second through hole (331), and the first optical fiber rod (150) and the second optical fiber rod (350) are connected to each other when the first housing (110) and the second housing (310) are clamped and form a sealed space; the first optical fiber rod (150) and the first sealing member (130) abutting against each other at one end are oppositely provided with a first inclined surface (151) and a second inclined surface (153), and the second optical fiber rod (350) and the second sealing member (330) abutting against each other at one end are oppositely provided with a third inclined surface (351) and a fourth inclined surface (353); the first joint (100) further comprises a third elastic member (193) connected with the first housing (110) at one end and connected with the first optical fiber rod (150) at the other end, and the second joint (300) further comprises a fourth elastic member (393) connected with the second housing (310) at one end and connected with the second optical fiber rod (350) at the other end. In the recycling link, the rotation of the first sealing element (130) can resist the force acting on the first inclined surface (151) and / or the second inclined surface (153), generate a thrust force, and push the first optical fiber rod (150) to move in a direction away from the first through hole (131); the rotation of the second sealing element (330) can resist the force acting on the third inclined surface (351) and / or the fourth inclined surface (353), generate a thrust force, and push the second optical fiber rod (350) to move in a direction away from the second through hole (331).

2. An underwater wet-plug according to claim 1, characterized in that, The axis of the first rotating shaft (510) is perpendicular to the first sealing element (130), and the axis of the second rotating shaft (530) is perpendicular to the second sealing element (330).

3. An underwater wet-plug according to claim 1, wherein, 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 of 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 of the length of the second through hole (331).

4. An underwater wet-plug according to claim 1, characterized in that, The first shell (110) comprises a first outer shell (121) and a first floating shell (123), and the first joint (100) further comprises a first elastic element (191); the second shell (310) comprises a second outer shell (321) and a second floating shell (323), and the second joint (300) further comprises a second elastic element (391); One end of the first outer shell (121) is open, the first floating shell (123) and the first elastic element (191) are located in the first outer shell (121), and the open end of the first outer shell (121) is slidably connected with the first floating shell (123), and the other end is connected with the first elastic element (191); 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 element (130), and the other end is connected with the end of the first elastic element (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 element (391) are located in the second outer shell (321), and the open end of the second outer shell (321) is slidably connected with the second floating shell (323), and the other end is connected with the second elastic element (391); one end of the second floating shell (323) close to the open end of the second outer shell (321) is provided with a second accommodating cavity for accommodating the second sealing element (330), and the other end is connected with the end of the second elastic element (391) away from the second outer shell (321).

5. An underwater wet mateable according to claim 4, characterized in that The first floating shell (123) comprises a first floating part (124) and a second floating part (125) connected with each other; the second floating shell (323) comprises a third floating part (324) and a fourth floating part (325) connected with each other; The first floating part (124) and the second floating part (125) are located at the open end of the first outer shell (121), and the second floating part (125) is connected with the first elastic part (191); the first floating part (124) and the second floating part (125) are respectively provided with a first accommodating groove and a second accommodating groove, and the first accommodating groove and the second accommodating groove jointly form the first accommodating cavity; The third floating part (324) and the fourth floating part (325) are located at the open end of the second outer shell (321), and the fourth floating part (325) is connected with the second elastic part (391); the third floating part (324) and the fourth floating part (325) are respectively provided with a third accommodating groove and a fourth accommodating groove, and the third accommodating groove and the fourth accommodating groove jointly form the second accommodating cavity.

6. An underwater wet-plug according to claim 4, wherein, 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).

7. An underwater wet-plug according to claim 4, wherein, The open end of the first outer shell (121) is a tapered structure (111), the open end of the second outer shell (321) is a tapered hole (311), and the tapered structure (111) cooperates with the tapered hole (311) to form the sealed space.

8. An underwater wet-plug according to any one of claims 1-7, characterized in that, The underwater wet plug (10) further comprises a rotating assembly connected with one end of the first rotating shaft (510) away from the first shell (110) and one end of the second rotating shaft (530) away from the second shell (310), for driving the first rotating shaft (510) and the second rotating shaft (530) to rotate synchronously.

Images