A plug-in / plug-out testing device simulating application conditions

Abstract

This invention discloses a plug-in / plug-out testing device simulating application conditions, comprising a test chamber filled with turbid seawater. An underwater socket is fixedly connected to one end of the test chamber near its interior, while an underwater plug is movably connected to the other end of the test chamber near its interior. The underwater plug is used for plug-in / plug-out testing with the underwater socket in the turbid seawater environment. The test chamber also includes a pressure control component for adjusting the water pressure of the turbid seawater, a heating component for adjusting the temperature of the turbid seawater, a insertion / return loss tester for testing fiber optic loss during plug-in / plug-out, and a stirring component for agitating the turbid seawater and adjusting its flow direction. An adjustment component is located at the lower end of the test chamber for adjusting its tilt angle. This invention provides a plug-in / plug-out testing device that can simulate complex underwater environments and perform cable connection tests under simulated application conditions.

Description

Technical Field

[0001] This invention relates to the field of cable connection testing, specifically to a plugging and unplugging test device that simulates application conditions. Background Technology

[0002] Currently, pressure chambers are widely used in simulating deep water pressure environments. However, conventional pressure chambers can only simulate single water pressure conditions and cannot meet the simulation requirements of complex underwater operating conditions with multiple conditions and factors. This limitation is particularly evident when simulating the operation of underwater wet-fit optical connectors. The insertion and removal of underwater wet-fit optical connectors is carried out in a complex marine environment, affected not only by deep water pressure and seawater salinity, but also by the potential stirring up of seabed sediment during operation, leading to turbidity of the surrounding environment. Furthermore, the influence of ocean currents and the docking angle all affect the quality of connector mating. These are simulation elements lacking in existing simulation testing equipment. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a plug-in / plug-out testing device that can simulate complex underwater environments and perform cable connection tests under simulated application conditions.

[0004] The technical solution adopted by the present invention to solve the above problems is as follows: a plug-in / plug-out testing device simulating application conditions, comprising a test chamber filled with turbid seawater, an underwater socket fixedly connected to one end of the test chamber near the inside of the test chamber, and an underwater plug movably connected to the other end of the test chamber near the inside of the test chamber. The underwater plug is subjected to plug-in / plug-out testing with the underwater socket in a turbid seawater environment. The test chamber is also equipped with a pressure control component for adjusting the water pressure of the turbid seawater, a heating component for adjusting the temperature of the turbid seawater, a plug-in / plug-out loss tester for testing the fiber optic loss during the plug-in / plug-out process, and a stirring component for stirring the turbid seawater and adjusting the seawater flow direction. The lower end of the test chamber is equipped with an adjustment component for adjusting the tilt angle of the test chamber.

[0005] Compared with existing technologies, the advantages of this invention are as follows: It simulates the underwater working environment by filling the test chamber with turbid seawater; it simulates the underwater working environment at different depths by controlling the seawater pressure in the test chamber through a pressure control component; it simulates the underwater working environment at different temperatures by controlling the seawater temperature in the test chamber through a heating component, such as different seawater temperatures at different depths and latitudes; it simulates the underwater working environment by simulating seawater disturbance, ocean currents, and the churning of sediment through a stirring component; and it is designed to detect the fiber optic loss during the insertion and removal process of the underwater plug and socket in a simulated marine environment, thereby obtaining test data that is closer to actual application conditions and making the data more accurate. Furthermore, the design of the adjustment component can simulate the underwater terrain environment and different docking tilt conditions.

[0006] As an improvement of the present invention, the two ends of the test chamber are respectively provided with fiber optic end caps and connecting rod end caps for sealing and connecting the test chamber. The stirring assembly is located at the end of the test chamber near the connecting rod end cap. The stirring assembly includes a stirring propeller and a drive motor. The drive motor is used to drive the stirring propeller to rotate forward or backward. The stirring assembly also includes a moving chamber with a flow channel between the moving chamber and the test chamber. The moving chamber is movably connected to the test chamber along the axis of the test chamber. The moving chamber has two operating points. At one operating point, the stirring propeller rotates forward, driving the water flow axially from the connecting rod end cap towards the fiber optic end cap. At the other operating point, the stirring propeller rotates backward. The propeller reverses direction, driving the water flow from the connecting rod through the end cap towards the fiber optic cable through the end cap, and then along the axis from the fiber optic cable through the end cap towards the connecting rod through the end cap. This improvement, through the design of the fiber optic cable through the end cap and the connecting rod through the end cap, achieves a seal on the test chamber, ensuring that turbid seawater will not leak out during testing. The moving chamber design, combined with the forward and reverse adjustment of the stirring propeller, creates two different water flows. These two flows are directly opposite the insertion direction of the underwater plug and the underwater socket, respectively. These are the two water flow directions most likely to cause insertion failure of the underwater plug and socket, allowing for testing of the extreme working environment of the underwater plug and socket, ensuring the accuracy of the test data.

[0007] As an improvement of the present invention, the adjustment assembly includes a set of fixed support rods and a set of adjustable support rods. The top end of the fixed support rods is hinged to one end of the test cavity, and the top end of the adjustable support rods is hinged to the other end of the test cavity. The adjustable support rods can adjust the support height of the other end of the test cavity. Through this improvement, the marine environment is complex, with many uphill and downhill laying environments. The slopes of the uphill and downhill slopes also affect the insertion and removal of underwater optical connectors. For example, if the underwater socket is located below the insertion point and its opening is tilted upward, it is easier for sediment to accumulate inside the underwater socket. Therefore, it is also necessary to test the effect of the slope during insertion and removal. By combining the insertion and removal slope with the direction of water flow, a more realistic and complex marine environment can be simulated, and the test results are more accurate.

[0008] As an improvement of the present invention, the edge of the fiber optic insertion end cap is sealed to the inner wall of the test cavity. The area near the center of the fiber optic insertion end cap is provided with multiple insertion connectors that are sealed to the fiber optic insertion end cap. These multiple insertion connectors are used to connect various static connection lines to the inside and outside of the test cavity. The side of the fiber optic insertion end cap near the inside of the test cavity has a smooth concave surface. The edge of the connecting rod insertion end cap is sealed to the inner wall of the test cavity. The area near the center of the connecting rod insertion end cap is provided with multiple sealing assemblies that are dynamically sealed to the connecting rod insertion end cap. These multiple sealing assemblies are used to connect various dynamic connecting rods to the inside and outside of the test cavity. The side of the connecting rod insertion end cap near the inside of the test cavity has a smooth concave surface. Through this improvement, firstly, through the fiber optic... The design of the fiber optic end cap and the connecting rod end cap achieves sealing at both ends of the test chamber. The design of the fiber optic connector ensures the fiber optic end cap remains sealed while preventing the entire testing device at that end from being placed inside the test chamber, thus reducing the chamber's volume and minimizing the contact area between the testing device and turbid seawater, preventing corrosion and extending the device's lifespan. Similarly, the design of the sealing assembly ensures the connecting rod end cap remains sealed while preventing the entire driving device at that end from being placed inside the test chamber, reducing the chamber's volume and minimizing contact area between the driving device and turbid seawater, preventing corrosion and extending the driving device's lifespan. Furthermore, the smooth concave design of the fiber optic end cap and the connecting rod end cap allows for smoother water flow within the test chamber, reducing eddy current formation.

[0009] As an improvement of the present invention, the heating assembly includes a thermocouple and a temperature display. The thermocouple is located inside the test chamber to detect the temperature of the turbid seawater, and the temperature display is located outside the test chamber to observe the temperature of the turbid seawater. The thermocouple and the temperature display are connected by an electrical connection wire passing through the chamber connector. Through this improvement, the temperature of the turbid seawater can be monitored, and the temperature display being located outside the test chamber avoids the problem of corrosion of the temperature display by seawater.

[0010] As an improvement of the present invention, the insertion loss tester is connected to two ribbon optical fibers. The insertion loss tester is located outside the test cavity. The two ribbon optical fibers pass through a trans-cavity connector and are respectively connected to an underwater plug and an underwater socket. Through this improvement, the insertion loss tester is connected to the underwater plug and the underwater socket, thereby enabling the measurement of fiber loss during the insertion and removal process of the underwater plug and the underwater socket. At the same time, the insertion loss tester is located outside the test cavity, avoiding the problem of seawater corrosion.

[0011] As an improvement of the present invention, the stirring propeller is located inside the test chamber, and the drive motor is located outside the test chamber. The stirring propeller and the drive motor are driven and connected by a rotating connecting rod. The rotating connecting rod and the connecting rod through the end cover are rotatably and sealingly connected. The sealing assembly between the rotating connecting rod and the connecting rod through the end cover includes a dustproof ring and two rotating sealing rings. Through this improvement, the stirring assembly can stir the turbid seawater. The drive motor is located outside the test chamber to reduce the volume of the test chamber and reduce the contact area between the drive motor and the turbid seawater, avoiding corrosion of the drive motor by seawater and extending the service life of the drive motor. The dustproof ring design can prevent silt in the test chamber from penetrating into the rotating connecting rod and the connecting rod through the end cover. The design of the two rotating sealing rings can prevent seawater from seeping out from between the rotating connecting rod and the connecting rod through the end cover during the rotation of the rotating connecting rod.

[0012] As an improvement of the present invention, the underwater plug is fixedly connected to a movable base, the movable base including two movable plates and multiple first movable connecting rods. The two movable plates are respectively disposed inside and outside the test chamber. The multiple first movable connecting rods are movably and sealingly connected to the connecting rod through-hull end cap. The movable plate disposed inside the test chamber is fixedly connected to the underwater plug, and the movable plate disposed outside the test chamber is fixedly connected to the movable end of the first hydraulic cylinder. A second movable connecting rod is fixedly connected to the end of the movable chamber near the connecting rod through-hull end cap. The moving connecting rod is driven and connected to the second hydraulic cylinder. The end of the moving cavity near the fiber optic cable penetration end cap is movably connected to four guide rods. These four guide rods are fixedly connected to the fiber optic cable penetration end cap. The sealing components for the moving sealing connection between the fiber optic cable penetration end cap and the first moving connecting rod, and the sealing components for the moving sealing connection between the fiber optic cable penetration end cap and the second moving connecting rod, both include dustproof rings and two unidirectional sealing rings arranged in the same direction. Through this improvement, the underwater plug is driven and connected to the first hydraulic cylinder. Simultaneously, the design of multiple first moving connecting rods ensures the connection between the first hydraulic cylinder and... To ensure the stability of the underwater plug drive connection, the first hydraulic cylinder is located outside the test chamber, reducing its volume and minimizing contact with turbid seawater, thus preventing corrosion and extending its service life. Similarly, the drive connection between the moving chamber and the second hydraulic cylinder is achieved through a design with multiple second moving connecting rods. The second hydraulic cylinder's location outside the test chamber further reduces its volume and contact with turbid seawater, preventing corrosion and extending its service life. The guide rod design ensures the stability of the moving chamber's movement. In the sealing assembly, dust rings prevent sediment from penetrating the first and second moving connecting rods and the connecting rod end cap. Two one-way sealing rings prevent seawater from seeping between the first and second moving connecting rods and the connecting rod end cap during movement, and also prevent seawater from seeping between the second and second moving connecting rods during movement.

[0013] As an improvement of the present invention, the pressure control component includes an inlet valve, an overflow valve, and a hydraulic gauge. The inlet valve is located below the test chamber, and the overflow valve is located above the test chamber, with the inlet valve and overflow valve respectively located at both ends of the test chamber. Through this improvement, water is injected into the test chamber through the inlet valve until it overflows through the overflow valve, ensuring sufficient turbid seawater in the test chamber. At the same time, the inlet valve can also be used as an outlet valve to discharge water after the test is completed. The overflow valve can also be used as a pressure booster valve to increase the water pressure in the test chamber, which is convenient for simulating turbid seawater at different depths. The hydraulic gauge is designed to accurately monitor the current hydraulic pressure of the turbid seawater.

[0014] As an improvement of the present invention, the heating assembly further includes a heat exchanger, which includes heat exchange tubes that uniformly wrap around the outer wall of the test chamber. Through this improvement, temperature control of turbid seawater is achieved, and temperature uniformity of the turbid seawater is ensured. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure inside the overall test cavity of the present invention.

[0016] Figure 2 This is a top view of the overall test chamber of the present invention when the moving chamber is at a working point.

[0017] Figure 3 This is a top view of the internal structure of the overall test chamber of the present invention when the moving chamber is at another working point.

[0018] Figure 4 This is a schematic diagram of the fiber optic cable through-cabin end cap connection structure of the present invention.

[0019] Figure 5 This is a schematic diagram of the connection structure and water flow direction of the connecting rod passing through the end cover of the cabin when the moving cavity is at one working point.

[0020] Figure 6 This is a schematic diagram of the connection structure and water flow direction of the connecting rod passing through the end cover of the cabin when the moving cavity is at another working point.

[0021] Figure 7 This is a schematic diagram of the main view of the connecting rod passing through the end cap of the cabin according to the present invention.

[0022] Figure 8 This is a schematic diagram of the heat exchange tube-wrapped test chamber structure of the present invention.

[0023] The diagram shows: 1. Test chamber; 2. Underwater socket; 3. Underwater plug; 4. Pressure control assembly; 4.1. Inlet valve; 4.2. Overflow valve; 4.3. Hydraulic gauge; 5. Heating assembly; 5.1. Thermocouple; 5.2. Temperature display; 5.3. Heat exchanger; 5.3.1. Heat exchange tube; 6. Insertion loss tester; 6.1. Ribbon fiber; 7. Stirring assembly; 7.1. Stirring propeller; 7.2. Drive motor; 7.3. Moving chamber; 7.3.1. Flow channel; 7.4. Rotating connecting rod; 8. Adjustment assembly, 8.1 Fixed support rod assembly, 8.2 Adjustment support rod assembly, 9 Fiber optic cable penetration end cap, 9.1 Transmission connector, 10 Connecting rod penetration end cap, 11 Sealing assembly, 11.1 Dustproof ring, 11.2 Rotary sealing ring, 11.3 One-way sealing ring, 12 Movable seat, 12.1 Movable plate, 12.2 First movable connecting rod, 12.2.1 Limiting protrusion, 13 First hydraulic cylinder, 14 Second movable connecting rod, 15 Second hydraulic cylinder, 16 Guide rod. Detailed Implementation

[0024] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, a plug-in / plug-out testing device simulating application conditions includes a test chamber 1 filled with turbid seawater. An underwater socket 2 is fixedly connected to one end of the test chamber 1 near the interior of the test chamber 1, and an underwater plug 3 is movably connected to the other end of the test chamber 1 near the interior of the test chamber 1. The underwater plug 3 is subjected to plug-in / plug-out testing with the underwater socket 2 in a turbid seawater environment. The test chamber 1 is also equipped with a pressure control component 4 for adjusting the water pressure of the turbid seawater, a heating component 5 for adjusting the temperature of the turbid seawater, a plug-in / plug-out loss tester 6 for testing fiber optic loss during the plug-in / plug-out process, and a stirring component 7 for stirring the turbid seawater and adjusting the seawater flow direction. An adjustment component 8 for adjusting the tilt angle of the test chamber 1 is provided at the lower end of the test chamber 1.

[0026] like Figure 2-6As shown, the test chamber 1 has fiber optic end caps 9 and connecting rod end caps 10 at its two ends for sealing the connection. The stirring assembly 7 is located at the end of the test chamber 1 near the connecting rod end cap 10. The stirring assembly 7 includes a stirring propeller 7.1 and a drive motor 7.2. The drive motor 7.2 drives the stirring propeller 7.1 to rotate forward or backward. The stirring assembly 7 also includes a moving chamber 7.3, with a flow channel 7.3.1 between the moving chamber 7.3 and the test chamber 1. The movable cavity 7.3 is connected to the test cavity 1 along the axis of the test cavity 1. The movable cavity 7.3 has two working points. At one working point, the stirring propeller 7.1 rotates forward, driving the water flow along the axial direction from the connecting rod through-cabin end cover 10 to the optical fiber through-cabin end cover 9. At the other working point, the stirring propeller 7.1 rotates in reverse, driving the water flow along the flow channel 7.3.1 from the connecting rod through-cabin end cover 10 to the optical fiber through-cabin end cover 9, and then along the axial direction from the optical fiber through-cabin end cover 9 to the connecting rod through-cabin end cover 10. The two operating points are located at opposite ends of the stirring propeller 7.1 along the axial direction. At one operating point, the stirring propeller 7.1 is inside the moving cavity 7.3, forming a stable axial water flow. A small amount of radially dispersed water flow can also flow along the axial direction and will not flow against the flow channel 7.3.1. At the other operating point, the stirring propeller 7.1 is outside the moving cavity 7.3, and the water flow formed will flow towards the flow channel 7.3.1, making it less likely to flow back towards the moving cavity 7.3. This better ensures the smoothness of the water flow and makes it less likely to cause water flow diffusion interference.

[0027] like Figure 1-3 , Figure 8 As shown, the adjustment assembly 8 includes a set of fixed support rods 8.1 and a set of adjustable support rods 8.2. The top end of the fixed support rods 8.1 is hinged to one end of the test cavity 1, and the top end of the adjustable support rods 8.2 is hinged to the other end of the test cavity 1. The adjustable support rods 8.2 can adjust the support height of the other end of the test cavity 1. The fixed support rods 8.1 have two fixed support rods, which are respectively located on both sides of the test cavity 1. The adjustable support rods 8.2 have two adjustable support rods, which are respectively located on both sides of the test cavity 1. The upper end of the fixed support rods 8.1 is hinged to the middle of the test cavity 1, and the upper end of the adjustable support rods 8.2 is also hinged to the middle of the test cavity 1, thereby enabling free control of the test angle of the test cavity 1.

[0028] like Figure 1-6As shown, the edge of the fiber optic transom end cap 9 is sealed to the inner wall of the test cavity 1. The area near the center of the fiber optic transom end cap 9 is provided with multiple transom connectors 9.1 that are sealed to the fiber optic transom end cap 9. These multiple transom connectors 9.1 are used to connect various static connecting lines to the inside and outside of the test cavity 1. The side of the fiber optic transom end cap 9 near the inside of the test cavity 1 has a smooth concave surface. The edge of the connecting rod transom end cap 10 is sealed to the inner wall of the test cavity 1. The area near the center of the connecting rod transom end cap 10 is provided with multiple sealing components 11 that are dynamically sealed to the connecting rod transom end cap 10. These multiple sealing components 11 are used to connect various dynamic connecting rods to the inside and outside of the test cavity 1. The side of the connecting rod transom end cap 10 near the inside of the test cavity 1 has a smooth concave surface.

[0029] The heating assembly 5 includes a thermocouple 5.1 and a temperature display 5.2. The thermocouple 5.1 is located inside the test chamber 1 to detect the temperature of the turbid seawater, and the temperature display 5.2 is located outside the test chamber 1 to observe the temperature of the turbid seawater. The thermocouple 5.1 and the temperature display 5.2 are connected by an electrical connection wire passing through the chamber connector 9.1.

[0030] The insertion loss tester 6 is connected to two ribbon optical fibers 6.1. The insertion loss tester 6 is located outside the test chamber 1. The two ribbon optical fibers 6.1 pass through a cabin connector 9.1 and are respectively connected to the underwater plug 3 and the underwater socket 2.

[0031] The stirring propeller 7.1 is located inside the test chamber 1, and the drive motor 7.2 is located outside the test chamber 1. The stirring propeller 7.1 and the drive motor 7.2 are driven and connected by a rotating connecting rod 7.4. The rotating connecting rod 7.4 is rotatably and sealingly connected to the connecting rod through-chamber end cover 10. The sealing assembly 11 between the rotating connecting rod 7.4 and the connecting rod through-chamber end cover 10 includes a dustproof ring 11.1 and two rotating sealing rings 11.2.

[0032] like Figure 1-7As shown, the underwater plug 3 is fixedly connected to a movable base 12. The movable base 12 includes two movable plates 12.1 and two first movable connecting rods 12.2. The two movable plates 12.1 are respectively located inside and outside the test chamber 1. The two first movable connecting rods 12.2 are movably and sealingly connected to the connecting rod through-hull end cover 10. The movable plate 12.1 located inside the test chamber 1 is fixedly connected to the underwater plug 3, and the movable plate 12.1 located outside the test chamber 1 is fixedly connected to the movable end of the first hydraulic cylinder 13. The movable chamber 7.3 is located near the connecting rod through-hull end cover 10. Two second movable connecting rods 14 are fixedly connected to the end of the fiber optic cable penetration end cover 9. The two second movable connecting rods 14 are driven to be connected to the second hydraulic cylinder 15. The end of the movable cavity 7.3 near the fiber optic cable penetration end cover 9 is movably connected to four guide rods 16. The four guide rods 16 are fixedly connected to the fiber optic cable penetration end cover 9. The sealing assembly 11 for moving and sealing the connecting rod penetration end cover 10 and the first movable connecting rod 12.2 and the sealing assembly 11 for moving and sealing the connecting rod penetration end cover 10 and the second movable connecting rod 14 have the same structure, both including a dustproof ring 11.1 and two unidirectional sealing rings 11.3 arranged in the same direction. Two first movable connecting rods 12.2 are symmetrically arranged about the rotating connecting rod 7.4, and two second movable connecting rods 14 are also symmetrically arranged about the rotating connecting rod 7.4. The distance between the first movable connecting rod 12.2 and the rotating connecting rod 7.4 is less than the distance between the second movable connecting rod 14 and the rotating connecting rod 7.4, so that the first movable connecting rod 12.2 and the second movable connecting rod 14 are misaligned, and the structural stability of the connecting rod through the hatch end cover 10 is maintained.

[0033] The one-way seal 11.3 is composed of a rubber O-ring and a polytetrafluoroethylene ring, while the rotary seal 11.2 is composed of a rubber O-ring and a polytetrafluoroethylene ring.

[0034] In order to prevent the moving plate 12.1 located inside the test chamber 1 from interfering with the stirring propeller 7.1 or the moving chamber 7.3 during the movement of the first moving connecting rod 12.2, and to ensure the safety of the stirring propeller 7.1 and the moving chamber 7.3, a limiting protrusion 12.2.1 is provided on the area of ​​the first moving connecting rod 12.2 located inside the test chamber 1.

[0035] like Figure 1 , Figure 8As shown, the pressure control assembly 4 includes an inlet valve 4.1, an overflow valve 4.2, and a hydraulic gauge 4.3. The inlet valve 4.1 is located below the test chamber 1, and the overflow valve 4.2 is located above the test chamber 1. The inlet valve 4.1 and the overflow valve 4.2 are respectively located at both ends of the test chamber 1, so that water is injected into the test chamber 1 through the inlet valve 4.1 and overflowed through the overflow valve 4.2, ensuring sufficient turbid seawater in the test chamber 1. At the same time, the inlet valve 4.1 can also be used as an outlet valve to discharge water after the test is completed, while the overflow valve 4.2... Water valve 4.2 can also be used as a pressure booster valve, increasing the water pressure in test chamber 1 via overflow valve 4.2 to facilitate the simulation of turbid seawater at different depths. Hydraulic gauge 4.3 is designed to accurately monitor the current hydraulic pressure in the turbid seawater. The heating assembly 5 also includes a heat exchanger 5.3, which comprises heat exchange tubes 5.3.1. These heat exchange tubes 5.3.1 uniformly wrap around the outer wall of test chamber 1, bypassing the hinge points between test chamber 1 and the fixed support rod assembly 8.1 and the adjusting support rod assembly 8.2. In practical applications, because the seabed temperature is low, the primary function of the heating assembly 5 is cooling.

[0036] The underwater optical connector insertion and removal testing device can simulate underwater operating environments under different depths, temperatures, ocean currents, and terrains. These include horizontal operating environments, inclined operating environments where the underwater plug 3 is lower than the underwater socket 2, and inclined operating environments where the underwater plug 3 is higher than the underwater socket 2. The ocean current direction includes the direction from the underwater plug 3 to the underwater socket 2 and the direction from the underwater socket 2 to the underwater plug 3. Based on the operating angle and the direction of the operating ocean current, six different types of operating environments can be formed. This allows for more accurate testing of the insertion and removal effect of the underwater plug 3 and the underwater socket 2 under different operating environments, which is beneficial for ensuring the effectiveness of underwater insertion and removal operations in actual operation.

[0037] A test method for a plug-in / plug-out test device simulating application conditions, comprising the following steps:

[0038] S1: Adjust test chamber 1 to a horizontal position, open overflow valve 4.2, and inject turbid seawater from inlet valve 4.1 until the turbid seawater overflows from overflow valve 4.2, then close inlet valve 4.1;

[0039] S2: Pressurize from position 4.2 of the overflow valve according to the pressure of the submarine cable laying depth until the pressure condition is met;

[0040] S3: Adjust heating component 5 according to the temperature environment of the submarine cable laying to adjust the temperature of the turbid seawater until the temperature conditions are met.

[0041] S4: Adjust the insertion pressure of the first hydraulic cylinder 13, and the stirring propeller 7.1 rotates forward, driving the water flow along the axis from the underwater plug 3 to the underwater socket 2;

[0042] S5: The effective minimum horizontal forward rotation insertion pressure is detected by the insertion loss tester 6;

[0043] S6: Adjust the insertion pressure of the first hydraulic cylinder 13, reverse the direction of the stirring propeller 7.1, and drive the water flow to move from the underwater socket 2 to the underwater plug 3 along the axial direction;

[0044] S7: The effective minimum horizontal reversal insertion pressure is detected by the insertion loss tester 6;

[0045] S8: By adjusting component 8, the test chamber 1 is tilted so that the underwater plug 3 is higher than the underwater socket 2;

[0046] S9: Adjust the insertion pressure of the first hydraulic cylinder 13, and the stirring propeller 7.1 rotates forward, driving the water flow along the axis from the underwater plug 3 to the underwater socket 2;

[0047] S10: The effective minimum insertion pressure for positive tilt and positive rotation is detected by the insertion loss tester 6;

[0048] S11: Adjust the insertion pressure of the first hydraulic cylinder 13, reverse the direction of the stirring propeller 7.1, and drive the water flow to move from the underwater socket 2 to the underwater plug 3 along the axial direction;

[0049] S12: The effective minimum insertion pressure for positive tilt and reverse rotation is detected by the insertion loss tester 6;

[0050] S13: By adjusting component 8, the test chamber 1 is tilted so that the underwater plug 3 is lower than the underwater socket 2;

[0051] S14: Adjust the insertion pressure of the first hydraulic cylinder 13, and the stirring propeller 7.1 rotates forward, driving the water flow along the axis from the underwater plug 3 to the underwater socket 2;

[0052] S15: The effective minimum insertion pressure for reverse tilt and forward rotation is detected by the insertion loss tester 6;

[0053] S16: Adjust the insertion pressure of the first hydraulic cylinder 13, and reverse the agitator propeller 7.1 to drive the water flow from the underwater socket 2 to the underwater plug 3 along the axial direction.

[0054] S17: The effective anti-tilt and reverse minimum insertion pressure is detected by the insertion loss tester 6.

[0055] It also includes step A1: adjusting component 8 to make test chamber 1 horizontal;

[0056] A2: Adjust the insertion pressure of the first hydraulic cylinder 13, and reverse the agitator propeller 7.1 to drive the water flow along the axial direction from the underwater socket 2 to the underwater plug 3;

[0057] A3: The effective horizontal reverse maximum insertion pressure is detected by the insertion loss tester 6;

[0058] A4: Adjust the insertion pressure of the first hydraulic cylinder 13, and the stirring propeller 7.1 rotates forward, driving the water flow along the axis from the underwater plug 3 to the underwater socket 2;

[0059] A5: The effective horizontal forward rotation maximum insertion pressure is detected by the insertion loss tester 6.

[0060] It also includes step B1: by adjusting component 8, the test chamber 1 is tilted so that the underwater plug 3 is higher than the underwater socket 2;

[0061] B2: Adjust the insertion pressure of the first hydraulic cylinder 13, and reverse the agitator propeller 7.1 to drive the water flow from the underwater socket 2 to the underwater plug 3 along the axial direction.

[0062] B3: The effective positive tilt and reverse maximum insertion pressure is detected by the insertion loss tester 6;

[0063] B4: Adjust the insertion pressure of the first hydraulic cylinder 13, and rotate the stirring propeller 7.1 forward, driving the water flow along the axis from the underwater plug 3 to the underwater socket 2;

[0064] B5: The effective positive tilt and positive rotation maximum insertion pressure is detected by the insertion loss tester 6.

[0065] It also includes step C1: by adjusting component 8, the test chamber 1 is tilted so that the underwater plug 3 is lower than the underwater socket 2;

[0066] C2: Adjust the insertion pressure of the first hydraulic cylinder 13, and reverse the agitator propeller 7.1 to drive the water flow from the underwater socket 2 to the underwater plug 3 along the axial direction.

[0067] C3: The effective anti-tilt and reverse maximum insertion pressure is detected by the insertion loss tester 6.

[0068] C4: Adjust the insertion pressure of the first hydraulic cylinder 13, and the stirring propeller 7.1 rotates forward, driving the water flow along the axis from the underwater plug 3 to the underwater socket 2;

[0069] C5: The effective reverse tilt and forward rotation maximum insertion pressure is detected by the insertion loss tester 6.

[0070] In steps A1-A5, B1-B5, and C1-C5, first adjust to the specified pressure, then proceed with steps A1-A5, B1-B5, and C1-C5 in sequence, and then increase the pressure until the maximum insertion pressure for horizontal reverse rotation, horizontal forward rotation, forward tilt reverse rotation, forward tilt forward rotation, reverse tilt reverse rotation, and reverse tilt forward rotation are measured in sequence. By assembling the testing device once, multiple maximum insertion pressure parameters can be directly tested. During the test, whenever the fiber loss during a insertion process is about to reach the maximum reported loss data, the insertion pressure can be directly identified as the maximum insertion pressure under that condition. Then, there is no need to perform insertion tests under that condition again. When adjusting the insertion pressure, other test data can be tested instead. This allows for insertion pressure testing under other conditions before serious damage to the underwater plug 3 or underwater socket 2 occurs during the insertion process, until all insertion pressure condition tests are completed. Ultimately, multiple maximum insertion pressure parameters can be directly tested with only one assembly of the testing device, significantly improving testing efficiency.

[0071] Before steps S4, S8, S13, A1, B1, and C1, a step of removing sediment is included. This involves adjusting component 8 to tilt the test chamber 1 so that the underwater plug 3 is lower than the underwater socket 2, and reversing the stirring propeller 7.1 to drive water flow axially from the underwater socket 2 towards the underwater plug 3, maintaining this position for 3-5 minutes. During each test, sediment can easily accumulate in the underwater socket 2 during insertion. By positioning the underwater socket 2 with its plug facing downwards and aided by the water flow, the sediment can be expelled, reducing test errors. However, after each sediment removal operation, the test tilt angle must be reset to ensure test accuracy. For example, if sediment removal is performed during the minimum insertion pressure test (S12) with forward tilt and forward rotation, step S8 must be performed first, followed by steps S11 and S12.

[0072] The above description only illustrates the preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. All modifications made within the scope of the independent claims of this invention are also within the scope of protection of this invention.

Claims

1. A plug-in / plug-out testing device simulating application conditions, characterized in that: The test chamber (1) is filled with turbid seawater. An underwater socket (2) is fixedly connected to one end of the test chamber (1) near the inside of the test chamber (1), and an underwater plug (3) is movably connected to the other end of the test chamber (1) near the inside of the test chamber (1). The underwater plug (3) is tested by inserting and removing the plug from the underwater socket (2) in a turbid seawater environment. The test chamber (1) is also equipped with a pressure control component (4) for adjusting the water pressure of the turbid seawater, a heating component (5) for adjusting the temperature of the turbid seawater, and a test component for testing the insertion and removal process. The test chamber (1) is equipped with a fiber optic insertion loss tester (6) and a stirring assembly (7) for stirring turbid seawater and adjusting the direction of seawater flow. The lower end of the test chamber (1) is provided with an adjustment assembly (8) for adjusting the tilt angle of the test chamber (1). The two ends of the test chamber (1) are respectively provided with a fiber optic end cap (9) for sealing the connection of the test chamber (1) and a connecting rod end cap (10). The stirring assembly (7) is located at one end of the test chamber (1) near the connecting rod end cap (10). The stirring assembly (7) includes a stirring propeller (7.1) and a drive motor (7.1). 2) The drive motor (7.2) is used to drive the stirring propeller (7.1) to rotate forward or reverse. The stirring assembly (7) also includes a moving chamber (7.3). A flow channel (7.3.1) is provided between the moving chamber (7.3) and the test chamber (1). The moving chamber (7.3) is moved and connected to the test chamber (1) along the axis of the test chamber (1). The moving chamber (7.3) has two working points. At one working point, the stirring propeller (7.1) rotates forward and drives the water flow along the axis from the connecting rod through the end cover (10) to the fiber optic through the end cover. (9) Moving in the direction, at another working point, the stirring propeller (7.1) reverses, driving the water flow along the flow channel (7.3.1) from the connecting rod through-cabin end cover (10) to the fiber optic through-cabin end cover (9), and then along the axial direction from the fiber optic through-cabin end cover (9) to the connecting rod through-cabin end cover (10). The edge of the fiber optic through-cabin end cover (9) is sealed to the inner wall of the test chamber (1). The area near the center of the fiber optic through-cabin end cover (9) is provided with multiple through-cabin connectors (9.1) that are sealed to the fiber optic through-cabin end cover (9).1) Various static connecting lines are used to connect the inside and outside of the test cavity (1). The side of the fiber optic end cap (9) near the inside of the test cavity (1) has a smooth concave surface. The edge of the connecting rod end cap (10) is sealed to the inner wall of the test cavity (1). Multiple sealing components (11) are provided near the center of the connecting rod end cap (10) and are dynamically sealed to it. These sealing components (11) are used to connect various dynamic connecting rods to the inside and outside of the test cavity (1). The side of the connecting rod end cap (10) near the inside of the test cavity (1) has a smooth concave surface.

2. The insertion / removal testing device for simulating application conditions according to claim 1, characterized in that: The adjustment assembly (8) includes a set of fixed support rods (8.1) and a set of adjustable support rods (8.2). The top end of the fixed support rods (8.1) is hinged to one end of the test cavity (1), and the top end of the adjustable support rods (8.2) is hinged to the other end of the test cavity (1). The adjustable support rods (8.2) can adjust the support height of the other end of the test cavity (1).

3. The insertion / removal testing device for simulating application conditions according to claim 1, characterized in that: The heating assembly (5) includes a thermocouple (5.1) and a temperature display (5.2). The thermocouple (5.1) is located inside the test chamber (1) to detect the temperature of the turbid seawater, and the temperature display (5.2) is located outside the test chamber (1) to observe the temperature of the turbid seawater. The thermocouple (5.1) and the temperature display (5.2) are connected by an electrical connection wire passing through the transom connector (9.1).

4. The insertion / removal testing device for simulating application conditions according to claim 1, characterized in that: The insertion loss tester (6) is connected to two ribbon optical fibers (6.1). The insertion loss tester (6) is located outside the test chamber (1). The two ribbon optical fibers (6.1) pass through a cabin connector (9.1) and are connected to the underwater plug (3) and the underwater socket (2) respectively.

5. The insertion / removal testing device for simulating application conditions according to claim 1, characterized in that: The stirring propeller (7.1) is located inside the test chamber (1), and the drive motor (7.2) is located outside the test chamber (1). The stirring propeller (7.1) and the drive motor (7.2) are driven and connected by a rotating connecting rod (7.4). The rotating connecting rod (7.4) and the connecting rod through-chamber end cover (10) are rotatably and sealingly connected. The sealing assembly (11) between the rotating connecting rod (7.4) and the connecting rod through-chamber end cover (10) includes a dustproof ring (11.1) and two rotating sealing rings (11.2).

6. The insertion and removal test device for simulating application conditions according to claim 1, characterized in that: The underwater plug (3) is fixedly connected to a movable base (12). The movable base (12) includes two movable plates (12.1) and multiple first movable connecting rods (12.2). The two movable plates (12.1) are respectively located inside and outside the test chamber (1). The multiple first movable connecting rods (12.2) are movably and sealingly connected to the connecting rod through-hull end cap (10). The movable plate (12.1) located inside the test chamber (1) is fixedly connected to the underwater plug (3). The movable plate (12.1) located outside the test chamber (1) is fixedly connected to the movable end of the first hydraulic cylinder (13). The movable chamber (7.3) is close to the connecting rod through-hull end cap (10). One end of 10) is fixedly connected to a second movable connecting rod (14), which is driven to be connected to a second hydraulic cylinder (15). The end of the movable cavity (7.3) near the fiber optic end cap (9) is movably connected to four guide rods (16). The four guide rods (16) are fixedly connected to the fiber optic end cap (9). The sealing assembly (11) for moving the sealing connecting rod end cap (10) and the first movable connecting rod (12.2) and the sealing assembly (11) for moving the sealing connecting rod end cap (10) and the second movable connecting rod (14) both include a dustproof ring (11.1) and two unidirectional sealing rings (11.3) arranged in the same direction.

7. The insertion / removal testing device for simulating application conditions according to claim 1, characterized in that: The pressure control component (4) includes an inlet valve (4.1), an overflow valve (4.2), and a hydraulic gauge (4.3). The inlet valve (4.1) is located below the test chamber (1), and the overflow valve (4.2) is located above the test chamber (1). The inlet valve (4.1) and the overflow valve (4.2) are respectively located at both ends of the test chamber (1).

8. The insertion and removal test device for simulating application conditions according to claim 1, characterized in that: The heating assembly (5) further includes a heat exchanger (5.3), which includes a heat exchange tube (5.3.1) that uniformly wraps around the outer wall of the test chamber (1).

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