Plugging test device for simulating application working conditions

Abstract

The invention discloses a plugging test device for simulating application conditions, which comprises a test cavity filled with turbid seawater, an underwater socket is fixedly connected to one side, close to the inside of the test cavity, of one end of the test cavity, and an underwater plug is movably connected to one side, close to the inside of the test cavity, of the other end of the test cavity. The underwater plug and the underwater socket are subjected to a plugging test in a turbid seawater environment; the test cavity is also provided with a pressure control assembly used for adjusting the water pressure of the turbid seawater, a heating assembly used for adjusting the temperature of the turbid seawater, an insertion return loss tester used for testing the optical fiber loss in the insertion and extraction process, and a stirring assembly used for stirring the turbid seawater and adjusting the flowing direction of the seawater. The lower end of the testing cavity is provided with an adjusting assembly used for adjusting the inclination angle of the testing cavity. The invention provides the plugging test device for simulating the application working condition, which can simulate a complex underwater environment and perform cable connection test.

Description

Technical Field

[0001] The invention relates to the field of cable connection testing, in particular to a plug-in and pull-out testing device for simulating application conditions. Background Art

[0002] At present, pressure chambers have been widely used in simulating deep water pressure environments, but conventional pressure chambers can only simulate a single water pressure condition and cannot meet the multi-condition and multi-factor simulation requirements of complex underwater working conditions. This limitation is particularly evident when simulating the operating conditions of underwater wet plug-in optical connectors. The plug-in and pull-out operations of underwater wet plug-in optical connectors are completed in a complex marine environment. They are not only affected by deep water pressure and seawater salinity, but also may stir up seabed mud during operation, causing the surrounding environment to become turbid. The influence of ocean currents and the docking angle will affect the plug-in quality of the connector. These are simulation elements lacking in existing simulation test devices. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a plug-in test device for simulating application conditions, which can simulate a complex underwater environment and perform a cable connection test.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: a plug-in and pull-out test device for simulating application conditions, comprising a test chamber, the test chamber is filled with turbid seawater, one end of the test chamber is fixedly connected to a side close to the inside of the test chamber with an underwater socket, and the other end of the test chamber is movably connected to a side close to the inside of the test chamber with an underwater plug, and the underwater plug performs a plug-in and pull-out test with the underwater socket in a turbid seawater environment. The test chamber is also provided 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, an insertion and return loss tester for testing the optical fiber loss during the plug-in and pull-out process, and a stirring component for stirring the turbid seawater and adjusting the flow direction of the seawater, and the lower end of the test chamber is provided with an adjustment component for adjusting the inclination angle of the test chamber.

[0005] Compared with the prior art, the advantages of the present invention are as follows: the underwater operating environment of seawater is simulated by filling the test cavity with turbid seawater, the seawater pressure in the test cavity is controlled by the pressure control component, thereby simulating underwater operating environments at different depths, and the seawater temperature in the test cavity is controlled by the heating component, thereby simulating underwater operating environments at different temperatures, such as different seawater temperatures at different depths and different seawater temperatures at different latitudes. By stirring the stirring component, the underwater seawater disturbance, ocean currents, and underwater operating environments that drive mud and sand to roll can be simulated. The insertion-return loss tester is designed to detect the optical fiber loss during the plugging and unplugging process of the underwater plug and the underwater socket under a simulated marine environment, thereby detecting test data that is closer to the actual application conditions and making the data more accurate. By designing the adjustment component, the underwater terrain environment can be simulated, and different docking tilt conditions can be simulated.

[0006] As an improvement of the present invention, the two ends of the test cavity are respectively provided with an optical fiber through-cabin end cover and a connecting rod through-cabin end cover for sealing and connecting the test cavity, the stirring assembly is arranged at one end of the test cavity close to the connecting rod through-cabin end cover, 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 reverse, the stirring assembly also includes a moving cavity, a flow channel is provided between the moving cavity and the test cavity, the moving cavity is connected to the test cavity along the axis of the test cavity, the moving cavity is provided with two operating points, at one operating point, the stirring propeller rotates forward, driving the water flow along the axial direction from the connecting rod through-cabin end cover to the optical fiber through-cabin end cover, and at the other operating point, the stirring propeller rotates forward, driving the water flow along the axial direction from the connecting rod through-cabin end cover to the optical fiber through-cabin end cover, The propeller reverses, driving the water flow to move from the connecting rod through-cabin end cover along the flow channel to the optical fiber through-cabin end cover, and then moves along the axial direction from the optical fiber through-cabin end cover to the connecting rod through-cabin end cover. Through the improvement, the test chamber is sealed by the design of the optical fiber through-cabin end cover and the connecting rod through-cabin end cover, ensuring that turbid seawater does not seep out during the test; through the mobile design of the moving cavity combined with the forward and reverse adjustment of the stirring propeller, two different flowing water flows are formed, and the two flowing water flows are respectively facing the plug-in direction of the underwater plug and the plug-in direction of the underwater socket. They are the two water flow directions that are most likely to cause plug-in failure of the underwater plug and the underwater socket. The extreme working environment of the underwater plug and the underwater socket can be tested to ensure the accuracy of the test data.

[0007] As an improvement of the present invention, the adjustment assembly includes a group of fixed support rod groups and a group of adjustable support rod groups, the top end of the fixed support rod group is hinged to one end of the test cavity, the top end of the adjustable support rod group is hinged to the other end of the test cavity, and the adjustable support rod group can adjust the support height of the other end of the test cavity. Through the improvement, the marine environment is complex, and there are many uphill and downhill laying environments, and the uphill and downhill slopes also have an impact on the plugging and unplugging of underwater optical connectors. For example, the underwater socket is below the plug-in, and its opening is inclined upward, which makes it easier for mud and sand to deposit inside the underwater socket. Therefore, it is also necessary to test the influence of the slope during plugging and unplugging; by combining the plug-in slope with the direction of the 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 optical fiber penetration end cover is sealed and connected to the inner wall of the test cavity, and the area near the center of the optical fiber penetration end cover is provided with a plurality of penetration connectors sealed and connected to the optical fiber penetration end cover, and the plurality of penetration connectors are respectively used for connecting various static connection lines inside the test cavity with the outside of the test cavity, and the side of the optical fiber penetration end cover close to the inside of the test cavity is a smooth concave surface, and the edge of the connecting rod penetration end cover is sealed and connected to the inner wall of the test cavity, and the area near the center of the connecting rod penetration end cover is provided with a plurality of sealing assemblies dynamically sealed and connected to the connecting rod penetration end cover, and the plurality of sealing assemblies are respectively used for connecting various dynamic connection rods with the inside of the test cavity with the outside of the test cavity, and the side of the connecting rod penetration end cover close to the inside of the test cavity is a smooth concave surface. Through the improvement, firstly, through the optical fiber The design of the through-cabin end cover and the connecting rod through-cabin end cover realizes the sealing of the two ends of the test cavity; the through-cabin connector is designed to ensure the sealing of the optical fiber through-cabin end cover, so as to avoid the detection equipment at this end from being placed in the test cavity as a whole, so as to reduce the volume of the test cavity, and can reduce the contact range of the detection equipment with turbid seawater, avoid the detection equipment from being corroded by seawater, and extend the service life of the detection equipment; the design of the sealing component is designed to ensure the sealing of the connecting rod through-cabin end cover, so as to avoid the driving equipment at this end from being placed in the test cavity as a whole, so as to reduce the volume of the test cavity, and can reduce the contact range of the driving equipment with turbid seawater, avoid the driving equipment from being corroded by seawater, and extend the service life of the driving equipment; and the smooth concave surface design of the optical fiber through-cabin end cover and the connecting rod through-cabin end cover can make the water flow more smoothly in the test cavity and reduce the formation of vortices.

[0009] As an improvement of the present invention, the heating assembly includes a thermocouple and a temperature display. The thermocouple is arranged inside the test cavity to detect the temperature of the turbid seawater. The temperature display is arranged outside the test cavity to observe the temperature of the turbid seawater. The thermocouple and the temperature display are connected by an electrical connection line passing through the through-tank connector. Through the improvement, the temperature of the turbid seawater is monitored. At the same time, the temperature display is arranged outside the test cavity, which avoids the problem of the temperature display being corroded by seawater.

[0010] As an improvement of the present invention, the insertion-return loss tester is connected to two optical fiber ribbons, and the insertion-return loss tester is arranged outside the test cavity. The two optical fiber ribbons pass through a cabin penetration connector respectively and are connected to an underwater plug and an underwater socket respectively. Through the improvement, the connection between the insertion-return loss tester and the underwater plug and the underwater socket is realized, so that the optical fiber loss of the underwater plug and the underwater socket during the plugging and unplugging process can be measured. At the same time, the insertion-return loss tester is arranged outside the test cavity, which avoids the problem of the insertion-return loss tester being corroded by seawater.

[0011] As an improvement of the present invention, the stirring propeller is arranged inside the test chamber, and the driving motor is arranged outside the test chamber. The stirring propeller and the driving motor are driven and connected by a rotating connecting rod. The rotating connecting rod is rotationally sealed with the connecting rod through-tank end cover. The sealing assembly between the rotating connecting rod and the connecting rod through-tank end cover includes a dust ring and two rotating sealing rings. Through the improvement, the stirring assembly can stir the turbid seawater. The driving motor is arranged outside the test chamber to reduce the volume of the test chamber and reduce the contact range between the driving motor and the turbid seawater to avoid corrosion of the driving motor by seawater, so as to extend the service life of the driving motor. The design of the dust ring can prevent mud and sand in the test chamber from penetrating into the rotating connecting rod and the connecting rod through-tank 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-tank 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 moving seat, and the moving seat includes two moving plates and multiple first moving connecting rods. The two moving plates are respectively arranged inside and outside the test cavity. The multiple first moving connecting rods are movably sealed and connected to the connecting rod through-cabin end cover. The moving plate arranged inside the test cavity is fixedly connected to the underwater plug, and the moving plate arranged outside the test cavity is fixedly connected to the moving end of the first hydraulic cylinder. The end of the mobile cavity close to the connecting rod through-cabin end cover is fixedly connected with a second moving connecting rod. The movable connecting rod is drivingly connected to the second hydraulic cylinder, and one end of the movable cavity close to the optical fiber penetration end cover is movably connected to four guide rods, and the four guide rods are fixedly connected to the optical fiber penetration end cover. The sealing assembly for moving and sealing the connecting rod penetration end cover and the first movable connecting rod and the sealing assembly for moving and sealing the connecting rod penetration end cover and the second movable connecting rod both include a dust ring and two one-way sealing rings arranged in the same direction. Through the improvement, the driving connection between the underwater plug and the first hydraulic cylinder is realized, and at the same time, the design of multiple first movable connecting rods ensures that the first hydraulic cylinder and The stability of the underwater plug drive connection, the first hydraulic cylinder is arranged outside the test cavity, which can reduce the volume of the test cavity, and can reduce the contact of the first hydraulic cylinder with turbid seawater, avoid the first hydraulic cylinder from being corroded by seawater, and extend the service life of the first hydraulic cylinder; similarly, the driving connection between the moving cavity and the second hydraulic cylinder is realized, and the stability of the driving connection between the second hydraulic cylinder and the moving cavity is ensured by the design of multiple second moving connecting rods, the second hydraulic cylinder is arranged outside the test cavity, which can reduce the volume of the test cavity, and can reduce the contact of the second hydraulic cylinder with turbid seawater, avoid the second hydraulic cylinder from being corroded by seawater, and extend the service life of the second hydraulic cylinder, wherein the design of the guide rod ensures the stability of the movement of the moving cavity; in the sealing assembly, the design of the dust ring can prevent the mud and sand in the test cavity from penetrating into the first moving connecting rod, the second moving connecting rod and the connecting rod through-cabin end cover, and the design of two one-way sealing rings can prevent the seawater from seeping out from between the first moving connecting rod and the connecting rod through-cabin end cover during the movement of the first moving connecting rod, and also prevent the seawater from seeping out from between the second moving connecting rod and the connecting rod through-cabin end cover during the movement of the second moving connecting rod.

[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 arranged below the test chamber, the overflow valve is arranged above the test chamber, and the inlet valve and the overflow valve are respectively arranged at both ends of the test chamber. Through the improvement, water is injected into the test chamber from the inlet valve until water overflows from the overflow valve, thereby ensuring the adequacy of turbid seawater in the test chamber. At the same time, the inlet valve can also be used as an outlet valve, and water is discharged after the test is completed. The overflow valve can also be used as a booster valve, and the water pressure in the test chamber is increased by the overflow valve, so as to simulate turbid seawater of 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, the heat exchanger includes a heat exchange tube, and the heat exchange tube uniformly wraps the outer wall of the test cavity. Through the improvement, the temperature of the turbid seawater is controlled and the temperature uniformity of the turbid seawater is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main internal structure of the overall test chamber of the present invention.

[0016] Figure 2 It is a schematic diagram of the top view of the structure inside the overall test chamber of the present invention when the movable chamber is at an operating point.

[0017] Figure 3 It is a schematic diagram of the top view of the structure inside the overall test chamber of the present invention when the movable chamber is at another operating point.

[0018] Figure 4 It is a schematic diagram of the optical fiber through-cabin end cover connection structure of the present invention.

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

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

[0021] Figure 7 It is a schematic diagram of the main view of the connection structure of the connecting rod penetrating the cabin end cover of the present invention.

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

[0023] As shown in the figure: 1. Test chamber, 2. Underwater socket, 3. Underwater plug, 4. Pressure control assembly, 4.1. Water 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 optical fiber, 7. Stirring assembly, 7.1. Stirring propeller, 7.2. Driving motor, 7.3. Moving chamber, 7.3.1. Flow channel, 7.4. Rotating connecting rod, 8. Adjustment assembly, 8.1, fixed support rod group, 8.2, adjustment support rod group, 9, optical fiber cabin end cover, 9.1, cabin connection piece, 10, connecting rod cabin end cover, 11, sealing assembly, 11.1, dust ring, 11.2, rotating sealing ring, 11.3, one-way sealing ring, 12, moving seat, 12.1, moving plate, 12.2, first moving connecting rod, 12.2.1, limiting protrusion, 13, first hydraulic cylinder, 14, second moving connecting rod, 15, second hydraulic cylinder, 16, guide rod. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, a plug-in and pull-out test device for simulating application conditions comprises a test chamber 1, wherein 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, wherein the underwater plug 3 performs a plug-in and pull-out test with the underwater socket 2 in a turbid seawater environment, and the test chamber 1 is further provided 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, an insertion and return loss tester 6 for testing the optical fiber loss during the plug-in and pull-out process, and a stirring component 7 for stirring the turbid seawater and adjusting the flow direction of the seawater, and an adjusting component 8 for adjusting the inclination angle of the test chamber 1 is provided at the lower end of the test chamber 1.

[0026] like Figure 2-6As shown, both ends of the test chamber 1 are respectively provided with an optical fiber through-cabin end cover 9 and a connecting rod through-cabin end cover 10 for sealingly connecting the test chamber 1. The stirring assembly 7 is arranged at one end of the test chamber 1 close to the connecting rod through-cabin end cover 10. The stirring assembly 7 includes a stirring propeller 7.1 and a driving motor 7.2. The driving 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 movable chamber 7.3 is connected to the test chamber 1 by movement along the axis of the test chamber 1. The movable chamber 7.3 is provided with two operation points. At one operation 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 operation 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 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 respectively located at the two ends of the stirring propeller 7.1 along the axial direction. At one operating point, the stirring propeller 7.1 is inside the moving chamber 7.3, forming a stable axial water flow, and a small amount of radially dispersed water flow can also flow along the axial direction without flowing against the flow channel 7.3.1. At the other operating point, the stirring propeller 7.1 is outside the moving chamber 7.3, and the water flow formed will flow in the direction of the flow channel 7.3.1, and it is not easy to flow back to the moving chamber 7.3, thereby better ensuring the smoothness of the water flow and not easily causing diffusion interference of the water flow.

[0027] like Figure 1-3 , Figure 8 As shown, the adjustment assembly 8 includes a group of fixed support rods 8.1 and a group of adjustable support rods 8.2, the top end of the fixed support rod group 8.1 is hinged to one end of the test cavity 1, the top end of the adjustable support rod group 8.2 is hinged to the other end of the test cavity 1, and the adjustable support rod group 8.2 can adjust the support height of the other end of the test cavity 1, the fixed support rod group 8.1 is provided with two fixed support rods, and the two fixed support rods are respectively arranged on both sides of the test cavity 1, and the adjustable support rod group 8.2 is provided with two adjustable support rods, and the two adjustable support rods are respectively arranged on both sides of the test cavity 1, wherein the upper end of the fixed support rod group 8.1 is hinged to the middle part of the test cavity 1, and the upper end of the adjustable support rod group 8.2 is also hinged to the middle part of the test cavity 1, so that the freedom of control of the test angle of the test cavity 1 can be achieved.

[0028] like Figure 1-6As shown, the edge of the optical fiber penetration end cover 9 is sealed and connected to the inner wall of the test cavity 1, and the area near the center of the optical fiber penetration end cover 9 is provided with a plurality of penetration connectors 9.1 which are sealed and connected to the optical fiber penetration end cover 9, and the plurality of penetration connectors 9.1 are respectively used for connecting various static connection lines to the inside of the test cavity 1 and the outside of the test cavity 1, and the side of the optical fiber penetration end cover 9 close to the inside of the test cavity 1 is a smooth concave surface, and the edge of the connecting rod penetration end cover 10 is sealed and connected to the inner wall of the test cavity 1, and the area near the center of the connecting rod penetration end cover 10 is provided with a plurality of sealing components 11 which are dynamically sealed and connected to the connecting rod penetration end cover 10, and the plurality of sealing components 11 are respectively used for connecting various dynamic connection rods to the inside of the test cavity 1 and the outside of the test cavity 1, and the side of the connecting rod penetration end cover 10 close to the inside of the test cavity 1 is a smooth concave surface.

[0029] The heating assembly 5 comprises a thermocouple 5.1 and a temperature display 5.2. The thermocouple 5.1 is arranged inside the test chamber 1 for detecting the temperature of the turbid seawater. The temperature display 5.2 is arranged outside the test chamber 1 for observing the temperature of the turbid seawater. The thermocouple 5.1 and the temperature display 5.2 are connected by an electrical connection line passing through the through-tank connector 9.1.

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

[0031] The stirring propeller 7.1 is arranged inside the test chamber 1, and the driving motor 7.2 is arranged outside the test chamber 1. The stirring propeller 7.1 and the driving motor 7.2 are driven and connected by a rotating connecting rod 7.4. The rotating connecting rod 7.4 is rotationally sealed connected to the connecting rod through-cabin end cover 10. The sealing assembly 11 between the rotating connecting rod 7.4 and the connecting rod through-cabin end cover 10 includes a dust 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 moving seat 12, and the moving seat 12 includes two moving plates 12.1 and two first moving connecting rods 12.2. The two moving plates 12.1 are respectively arranged inside the test chamber 1 and outside the test chamber 1. The two first moving connecting rods 12.2 are movably sealed and connected to the connecting rod through-cabin end cover 10. The moving plate 12.1 arranged inside the test chamber 1 is fixedly connected to the underwater plug 3, and the moving plate 12.1 arranged outside the test chamber 1 is fixedly connected to the moving end of the first hydraulic cylinder 13. The moving chamber 7.3 is close to the connecting rod through-cabin end cover 10. Two second movable connecting rods 14 are fixedly connected to the end, and the two second movable connecting rods 14 are driven and connected to the second hydraulic cylinder 15. The end of the movable cavity 7.3 close to the optical fiber through-cabin end cover 9 is movably connected to four guide rods 16, and the four guide rods 16 are fixedly connected to the optical fiber through-cabin end cover 9. The sealing assembly 11 used for moving and sealingly connecting the connecting rod through-cabin end cover 10 and the first movable connecting rod 12.2 and the sealing assembly 11 used for moving and sealingly connecting the connecting rod through-cabin end cover 10 and the second movable connecting rod 14 have the same structure, and both include a dust ring 11.1 and a one-way sealing ring 11.3 set in the same direction. The two first movable connecting rods 12.2 are symmetrically arranged about the rotating connecting rod 7.4, and the 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 smaller 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-cabin end cover 10 is maintained.

[0033] The one-way sealing ring 11.3 is composed of a step seal composed of a rubber O-ring and a polytetrafluoroethylene ring, and the rotating sealing ring 11.2 is composed of a Gly ring composed of a rubber O-ring and a polytetrafluoroethylene ring.

[0034] During use, in order to prevent the mobile plate 12.1 arranged 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, so as 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 where the first moving connecting rod 12.2 is arranged 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 arranged below the test chamber 1, and the overflow valve 4.2 is arranged above the test chamber 1. The inlet valve 4.1 and the overflow valve 4.2 are arranged at both ends of the test chamber 1, respectively, so that water is injected into the test chamber 1 from the inlet valve 4.1 until water overflows from the overflow valve 4.2, thereby ensuring the sufficiency of turbid seawater in the test chamber 1. At the same time, the inlet valve 4.1 can also be used as an outlet valve. After the test is completed, water is discharged, and the overflow valve 4.2 is used as a hydraulic gauge 4.3. The water valve 4.2 can also be used as a boost valve. The overflow valve 4.2 increases the water pressure in the test chamber 1, which is convenient for simulating turbid seawater at different depths, and the hydraulic gauge 4.3 is designed to accurately monitor the current hydraulic pressure of the turbid seawater; the heating component 5 also includes a heat exchanger 5.3, and the heat exchanger 5.3 includes a heat exchange tube 5.3.1, and the heat exchange tube 5.3.1 evenly wraps the outer wall of the test chamber 1, wherein the heat exchange tube 5.3.1 is wrapped around the hinge between the test chamber 1 and the fixed support rod group 8.1 and the adjustment support rod group 8.2. In actual applications, because the seabed temperature is low, the main function of the heating component 5 is to cool down.

[0036] Through the design of the underwater optical connector plug-in and pull-out test device, underwater operating environments at different depths, different temperatures, different ocean currents, and different terrains can be simulated, including a horizontal operating environment, an inclined operating environment in which the underwater plug 3 is lower than the underwater socket 2, and an inclined operating environment in which the underwater plug 3 is higher than the underwater socket 2. The ocean current directions include from the underwater plug 3 to the underwater socket 2 and from the underwater socket 2 to the underwater plug 3. From the operating angle and the operating ocean current direction, six groups of different types of operating environments can be formed, so that the plug-in and pull-out effects of the underwater plug 3 and the underwater socket 2 under different operating environments can be tested more accurately, which is beneficial to ensure the effectiveness of underwater plug-in and pull-out operations during actual operations.

[0037] A testing method for a plug-in test device simulating an application condition, the steps of which are as follows:

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

[0039] S2: According to the pressure at the laying depth of the submarine cable, pressurize from the overflow valve 4.2 until the pressure condition is met;

[0040] S3: According to the temperature environment of the submarine cable laying, the heating component 5 is adjusted to adjust the temperature of the turbid seawater until the temperature condition is met;

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

[0042] S5: Detecting the effective horizontal forward minimum plugging pressure through the insertion loss tester 6;

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

[0044] S7: Detecting the effective horizontal reversal minimum plugging pressure through the insertion loss tester 6;

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

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

[0047] S10: Detecting the effective positive tilt and positive rotation minimum plugging pressure through the insertion loss tester 6;

[0048] S11: adjusting the plugging pressure of the first hydraulic cylinder 13, the stirring propeller 7.1 reverses, and drives the water flow along the axial direction from the underwater socket 2 to the underwater plug 3;

[0049] S12: Detecting the effective positive tilt reversal minimum plugging pressure through the insertion loss tester 6;

[0050] S13: by adjusting the assembly 8, the test chamber 1 is arranged so that the underwater plug 3 is lower than the underwater socket 2;

[0051] S14: adjusting the plugging pressure of the first hydraulic cylinder 13, the stirring propeller 7.1 rotates forward, driving the water flow along the axial direction from the underwater plug 3 to the underwater socket 2;

[0052] S15: Detecting the effective reverse tilt forward minimum plugging pressure through the insertion loss tester 6;

[0053] S16: adjusting the plugging pressure of the first hydraulic cylinder 13, the stirring propeller 7.1 is reversed, and the water flow is driven to move from the underwater socket 2 to the underwater plug 3 along the axial direction;

[0054] S17: Detecting the effective anti-tilt reversal minimum insertion pressure through the insertion loss tester 6.

[0055] The method further comprises step A1: adjusting the component 8 so that the test chamber 1 is arranged horizontally;

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

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

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

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

[0060] The step B1 is also included: by adjusting the assembly 8, the test chamber 1 is arranged to be tilted so that the underwater plug 3 is higher than the underwater socket 2;

[0061] B2: Adjust the plugging pressure of the first hydraulic cylinder 13, the stirring propeller 7.1 reverses, and drives the water flow along the axial direction from the underwater socket 2 to the underwater plug 3;

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

[0063] B4: Adjust the plugging pressure of the first hydraulic cylinder 13, the stirring propeller 7.1 rotates forward, and drives the water flow along the axial direction from the underwater plug 3 to the underwater socket 2;

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

[0065] The step C1 is also included: by adjusting the assembly 8, the test chamber 1 is arranged to be tilted so that the underwater plug 3 is lower than the underwater socket 2;

[0066] C2: Adjust the plugging pressure of the first hydraulic cylinder 13, the stirring propeller 7.1 reverses, and drives the water flow along the axial direction from the underwater socket 2 to the underwater plug 3;

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

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

[0069] C5: The effective reverse tilt forward rotation maximum plugging 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, and then perform steps A1-A5, B1-B5, and C1-C5 in sequence, and then increase the pressure until the maximum plugging pressure of horizontal reversal, the maximum plugging pressure of horizontal forward rotation, the maximum plugging pressure of positive tilt reversal, the maximum plugging pressure of positive tilt forward rotation, the maximum plugging pressure of reverse tilt reversal, and the maximum plugging pressure of reverse tilt forward rotation are measured in sequence. By assembling a test device once, multiple maximum plugging pressure parameters can be directly tested. During the test, whenever the optical fiber loss in a plugging process is about to reach the maximum loss data, the plugging pressure can be directly determined as the maximum plugging pressure under this condition, and then there is no need to perform a plugging test under this condition. When adjusting the plugging pressure, other test data can be tested. In this way, before causing serious damage to the underwater plug 3 or the underwater socket 2 during the plugging process, plugging pressure tests under other conditions can be performed until all plugging pressure condition tests are completed. Finally, multiple maximum plugging pressure parameters can be directly tested by assembling the test device only once, thereby greatly improving the test efficiency.

[0071] Before steps S4, S8, S13, A1, B1, and C1, a step of discharging sediment is also included. By adjusting the component 8, the test chamber 1 is set to be tilted so that the underwater plug 3 is lower than the underwater socket 2, and the stirring propeller 7.1 is reversed to drive the water flow from the underwater socket 2 to the underwater plug 3 along the axial direction, and maintain it for 3-5 minutes. In each test process, sediment is likely to accumulate in the underwater socket 2 during the plugging process, so that the internal sediment can be discharged through the downward setting of the socket of the underwater socket 2 and with the help of the water flow to reduce the test error. However, after each operation of discharging sediment, the setting of the test tilt angle needs to be restored to ensure the accuracy of the test. For example, when performing the positive tilt and positive rotation minimum plugging pressure test of S12, a sediment discharging operation is performed, and then step S8 needs to be performed once, and then steps S11 and S12 are performed.

[0072] The above description is only for the best embodiment of the present invention, but it should not be understood as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the scope of protection of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A plug-in test device for simulating application conditions, characterized in that: The invention comprises a test chamber (1), wherein the test chamber (1) is filled with turbid seawater, one end of the test chamber (1) is fixedly connected to an underwater socket (2) near the inside of the test chamber (1), and the other end of the test chamber (1) is movably connected to an underwater plug (3) near the inside of the test chamber (1), wherein the underwater plug (3) performs a plug-in and pull-out test with the underwater socket (2) in a turbid seawater environment, and the test chamber (1) is also provided 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, an insertion and return loss tester (6) for testing the optical fiber loss during the plug-in and pull-out process, and a stirring component (7) for stirring the turbid seawater and adjusting the flow direction of the seawater, and an adjustment component (8) for adjusting the inclination angle of the test chamber (1) is provided at the lower end of the test chamber (1).

2. A plug-in and pull-out test device for simulating application conditions according to claim 1, characterized in that: The two ends of the test chamber (1) are respectively provided with an optical fiber through-chamber end cover (9) and a connecting rod through-chamber end cover (10) for sealingly connecting the test chamber (1); the stirring assembly (7) is arranged at one end of the test chamber (1) close to the connecting rod through-chamber end cover (10); the stirring assembly (7) comprises a stirring propeller (7.1) and a drive motor (7.2); the drive motor (7.2) is used to drive the stirring propeller (7.1) to rotate forward or reverse; the stirring assembly (7) further comprises 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 movable chamber (7.3) is connected to the test chamber (1) by movement along the axis of the test chamber (1). The movable chamber (7.3) is provided with two operation points. At one operation point, the stirring propeller (7.1) rotates forward, driving the water flow to move in the axial direction from the connecting rod through-cabin end cover (10) to the optical fiber through-cabin end cover (9). At the other operation point, the stirring propeller (7.1) rotates reversely, driving the water flow to move in 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 moving in the axial direction from the optical fiber through-cabin end cover (9) to the connecting rod through-cabin end cover (10).

3. A plug-in and pull-out test device for simulating application conditions according to claim 2, characterized in that: The adjustment assembly (8) comprises a fixed support rod group (8.1) and an adjustable support rod group (8.2), the top end of the fixed support rod group (8.1) is hinged to one end of the test cavity (1), the top end of the adjustable support rod group (8.2) is hinged to the other end of the test cavity (1), and the adjustable support rod group (8.2) can adjust the support height of the other end of the test cavity (1).

4. A plug-in and pull-out test device for simulating application conditions according to claim 2, characterized in that: The edge of the optical fiber penetration end cover (9) is sealed to the inner wall of the test cavity (1); a plurality of penetration connectors (9.1) sealed to the optical fiber penetration end cover (9) are provided in an area near the center thereof; the plurality of penetration connectors (9.1) are respectively used for connecting various static connection lines to the inside of the test cavity (1) and the outside of the test cavity (1); the side of the optical fiber penetration end cover (9) near the inside of the test cavity (1) is a smooth concave surface; the edge of the connecting rod penetration end cover (10) is sealed to the inner wall of the test cavity (1); a plurality of sealing components (11) dynamically sealed to the connecting rod penetration end cover (10) are provided in an area near the center thereof; the plurality of sealing components (11) are respectively used for connecting various dynamic connection rods to the inside of the test cavity (1) and the outside of the test cavity (1); the side of the connecting rod penetration end cover (10) near the inside of the test cavity (1) is a smooth concave surface.

5. A plug-in and pull-out test device for simulating application conditions according to claim 4, characterized in that: The heating assembly (5) comprises a thermocouple (5.1) and a temperature display (5.2); the thermocouple (5.1) is arranged inside the test chamber (1) for detecting the temperature of the turbid seawater; the temperature display (5.2) is arranged outside the test chamber (1) for observing the temperature of the turbid seawater; the thermocouple (5.1) and the temperature display (5.2) are connected via an electrical connection line passing through a cabin penetration connector (9.1).

6. A plug-in and pull-out test device for simulating application conditions according to claim 4, characterized in that: The insertion loss tester (6) is connected to two ribbon optical fibers (6.1). The insertion loss tester (6) is arranged outside the test chamber (1). The two ribbon optical fibers (6.1) respectively pass through a chamber penetration connector (9.1) and are respectively connected to an underwater plug (3) and an underwater socket (2).

7. The plug-in and pull-out test device for simulating application conditions according to claim 4, characterized in that: The stirring propeller (7.1) is arranged inside the test chamber (1), and the drive motor (7.2) is arranged outside the test chamber (1). The stirring propeller (7.1) and the drive motor (7.2) are connected to each other by a rotating connecting rod (7.4). The rotating connecting rod (7.4) is connected to a connecting rod through-cabin end cover (10) in a rotating and sealing manner. The sealing assembly (11) between the rotating connecting rod (7.4) and the connecting rod through-cabin end cover (10) comprises a dust ring (11.1) and two rotating sealing rings (11.2).

8. The plug-in and pull-out test device for simulating application conditions according to claim 4, characterized in that: The underwater plug (3) is fixedly connected to a movable seat (12); the movable seat (12) comprises two movable plates (12.1) and a plurality of first movable connecting rods (12.2); the two movable plates (12.1) are respectively arranged inside the test chamber (1) and outside the test chamber (1); the plurality of first movable connecting rods (12.2) are movably sealed and connected to the connecting rod through-tank end cover (10); the movable plate (12.1) arranged inside the test chamber (1) is fixedly connected to the underwater plug (3); the movable plate (12.1) arranged 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-tank end cover ( One end of the movable connecting rod (10) is fixedly connected to a second movable connecting rod (14), and the second movable connecting rod (14) is driven and connected to a second hydraulic cylinder (15). One end of the movable cavity (7.3) close to the optical fiber through-cabin end cover (9) is movably connected to four guide rods (16), and the four guide rods (16) are fixedly connected to the optical fiber through-cabin end cover (9). The sealing component (11) used for moving and sealingly connecting the connecting rod through-cabin end cover (10) and the first movable connecting rod (12.2) and the sealing component (11) used for moving and sealingly connecting the connecting rod through-cabin end cover (10) and the second movable connecting rod (14) both include a dust ring (11.1) and two one-way sealing rings (11.3) arranged in the same direction.

9. The plug-in and pull-out test device for simulating application conditions according to claim 1, characterized in that: The pressure control component (4) comprises a water inlet valve (4.1), a water overflow valve (4.2) and a hydraulic gauge (4.3). The water inlet valve (4.1) is arranged below the test chamber (1), the water overflow valve (4.2) is arranged above the test chamber (1), and the water inlet valve (4.1) and the water overflow valve (4.2) are respectively arranged at two ends of the test chamber (1).

10. The plug-in and pull-out test device for simulating application conditions according to claim 1, characterized in that: The heating component (5) further comprises a heat exchanger (5.3), wherein the heat exchanger (5.3) comprises a heat exchange tube (5.3.1), and the heat exchange tube (5.3.1) uniformly wraps the outer wall of the test cavity (1).

Images