Underwater Connector Pressure Environment Dynamic Plug and Unplug Test Platform Device

Abstract

The present invention discloses an underwater connector pressure environment dynamic plugging and unplugging test platform device, which includes a cylindrical support and guiding component, a driving component, and a magnetic coupling tensile and compressive force detection component. The first cylindrical support and the second cylindrical support have high centering accuracy to achieve repetitive plugging and unplugging operations between docking end a and docking end b. There is a pressure difference between the filling seal cavity and the oil filling cavity separated by the transition seal component, and the transition seal component can achieve the output of cables and / or optical cables through the cabin under different pressure difference environments. The magnetic coupling tensile and compressive force detection component can detect the plugging and unplugging forces during the plugging or separation of docking end a and docking end b. The cable passing through the cabin can achieve signal input and output, so as to detect the underwater performance of the underwater connector.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater engineering connection technology, and particularly to a dynamic plugging and unplugging test platform device for an underwater connector under pressure environment. Background Art

[0002] As an important component of underwater engineering projects, underwater plug connectors are widely used in subsea observation networks, offshore drilling platforms, underwater robots, and various ocean towing equipment. Especially with the construction and implementation of projects such as the national subsea science observation network, the demand for deep-water plug connectors is becoming increasingly urgent.

[0003] The working reliability and stability of underwater plug connectors under high-pressure environments are problems that need to be urgently solved in the process of developing underwater plug connectors in China. Underwater, especially in deep-sea ultra-high-pressure environments, there is generally no effective method for directly and accurately measuring the force in underwater equipment. Due to the high-pressure environment, corrosion, and biological fouling of seawater, ordinary precision sensors cannot be directly applied. Currently, the commonly used method is to indirectly deduce the reaction force of the actuator by measuring the fluid pressure in the hydraulic system, or to indirectly deduce the magnitude of the driving force by measuring the power consumption of the electric unit, with poor measurement accuracy. Therefore, how to develop a test platform device that can test underwater plug connectors is an urgent problem to be solved. Summary of the Invention

[0004] Based on this, the present invention provides a dynamic plugging and unplugging test platform device for an underwater connector under pressure environment, which solves the technical problem of performance testing for underwater plug connectors.

[0005] To achieve the above-mentioned invention purpose, the present invention adopts the following technical solutions:

[0006] A dynamic plugging and unplugging test platform device for an underwater connector under pressure environment includes a cylindrical support and guiding component, a driving component, a magnetic coupling tension and pressure detection component, and a video monitoring component;

[0007] The cylindrical support and guiding component includes:

[0008] A support frame;

[0009] A plurality of guiding shafts fixedly installed on the support frame;

[0010] Coaxial first and second cylindrical supports, both of which cooperate with the guiding shafts and can slide along the guiding shafts; the first cylindrical support has a first hollow cavity coaxial with the first cylindrical support, and the second cylindrical support has a second hollow cavity coaxial with the second cylindrical support;

[0011] The docking end a and the first tail-end encapsulation cylinder hermetically connected to the docking end a, with part of the docking end a and part of the first tail-end encapsulation cylinder located inside the first hollow cavity, and the first tail-end encapsulation cylinder is fixedly connected to the docking end a and the first cylindrical support;

[0012] The docking end b and the second tail-end encapsulation cylinder hermetically connected to the docking end b, with part of the docking end b and part of the second tail-end encapsulation cylinder located inside the second hollow cavity, and the second tail-end encapsulation cylinder is fixedly connected to the docking end b and the second cylindrical support; the second tail-end encapsulation cylinder is provided with a second cable-passing-through component, and the second cable-passing-through cable of the docking end b is connected to an external watertight cable through the second cable-passing-through component;

[0013] The transition sealing component, located inside the first tail-end encapsulation cylinder, is used to divide the first tail-end encapsulation cylinder into a filling and sealing cavity and an oil-filled cavity. A first cable-passing-through component is arranged at the position corresponding to the filling and sealing cavity of the first tail-end encapsulation cylinder, and the first cable-passing-through cable of the docking end a is hermetically sealed through the transition sealing component and then connected to an external watertight cable through the first cable-passing-through component;

[0014] The driving component is used to drive the second tail-end encapsulation cylinder, the docking end b and the second cylindrical support to move, so that the docking end b is inserted into or separated from the docking end a;

[0015] The magnetic coupling pull and pressure detection component is connected to the first tail-end encapsulation cylinder and is used to detect the force received by the docking end a;

[0016] The video monitoring component is used to monitor the insertion or separation process of the docking end a and the docking end b.

[0017] For the underwater connector pressure environment dynamic plugging and unplugging test platform device as described above, the transition sealing component includes a flange, a sealing elastomer, a pressing block and glue. The flange is installed on the inner wall of the first tail-end encapsulation cylinder. The flange has a through hole, and the middle of the inner wall of the through hole has a step. A sealing elastomer is arranged on one side of the step in the through hole. The pressing block is used to press the sealing elastomer onto the step, and the glue is filled between the steps in the through hole and on the other side of the step. The first cable-passing-through cable passes through the pressing block, the sealing elastomer and the glue.

[0018] For the underwater connector pressure environment dynamic plugging and unplugging test platform device as described above, the inner wall of the through hole filled with the glue has a constricted section, and the constriction direction is from the pressing block towards the glue.

[0019] For the underwater connector pressure environment dynamic plugging and unplugging test platform device as described above, the transition sealing component includes an electric core located inside the flange, and the first cable-passing-through cable is connected to the electric core.

[0020] The underwater connector pressure environment dynamic plugging and unplugging test platform device as described above, wherein the magnetic coupling tensile and compressive force detection component comprises:

[0021] A pressure-resistant cylinder, which is sealed by a sealing end cover;

[0022] An inner magnetic pole assembly, located inside the pressure-resistant cylinder;

[0023] A tensile and compressive force sensor;

[0024] A sensor support member, fixedly installed inside the pressure-resistant cylinder, and one end of the tensile and compressive force sensor is installed on the sensor support member;

[0025] A connection support frame, installed on the inner magnetic pole assembly, and the other end of the tensile and compressive force sensor is installed on the connection support frame;

[0026] An outer magnetic pole assembly, located outside the pressure-resistant cylinder, the outer magnetic pole assembly can move axially along the pressure-resistant cylinder, the outer magnetic pole assembly and the inner magnetic pole assembly have opposite magnets, and the polarities of the opposite faces of the opposite magnets of the outer magnetic pole assembly and the inner magnetic pole assembly are opposite; the outer magnetic pole assembly is connected to the first tail-end encapsulation cylinder.

[0027] The underwater connector pressure environment dynamic plugging and unplugging test platform device as described above, wherein both the outer magnetic pole assembly and the inner magnetic pole assembly comprise a plurality of magnetic rings, and the polarities of adjacent two magnetic rings are opposite.

[0028] The underwater connector pressure environment dynamic plugging and unplugging test platform device as described above, wherein the pressure-resistant cylinder comprises a coaxial inner cylinder and an outer cylinder, the first end of the outer cylinder is sealed by a sealing end cover, the second end of the outer cylinder is connected to the second end of the inner cylinder through a connecting part, the first end of the inner cylinder is a closed end, and the inner magnetic pole assembly is located between the inner cylinder and the outer cylinder; the outer magnetic pole assembly is located in the space enclosed by the inner cylinder.

[0029] The underwater connector pressure environment dynamic plugging and unplugging test platform device as described above, wherein there is a gap between the inner magnetic pole assembly and the connecting part, and there is an elastic pad between the sealing end cover and the sensor support member.

[0030] The underwater connector pressure environment dynamic plugging and unplugging test platform device as described above, wherein there is an elastic body between the cylindrical support and guiding component and the driving component.

[0031] The underwater connector pressure environment dynamic plugging and unplugging test platform device as described above, the device includes a host computer, the host computer is connected to an external watertight cable, the host computer is connected to the magnetic coupling tensile and compressive force detection component to receive the tensile and compressive force signal output by the magnetic coupling tensile and compressive force detection component, and the host computer is connected to the driving component to control the driving component.

[0032] Compared with the prior art, the advantages and positive effects of the present invention are: the underwater connector pressure environment dynamic plugging and unplugging test platform device of the present invention includes a cylindrical support and guiding component, a driving component and a magnetic coupling tensile and compressive force detection component. The first cylindrical support and the second cylindrical support have high centering accuracy, realizing repetitive plugging and unplugging operations between docking end a and docking end b; there is a pressure difference between the filling seal cavity and the oil-filled cavity separated by the transition seal component, and the transition seal component can realize the through-cabin output of cables and / or optical cables in different pressure difference environments; the magnetic coupling tensile and compressive force detection component can detect the plugging and unplugging forces during the plugging or separation process of docking end a and docking end b, and the through-cabin cable can realize signal input and output, thereby detecting the underwater performance of the underwater connector.

[0033] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer. Brief Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 Schematic diagram of a specific embodiment of the present invention;

[0036] Figure 2 Top view of a specific embodiment of the present invention;

[0037] Figure 3 For Figure 2 Cross-sectional view in the A-A direction;

[0038] Figure 4 For Figure 3 Enlarged view of 17 in

[0039] Figure 5 Side view of a specific embodiment of the present invention;

[0040] Figure 6 For Figure 2 Cross-sectional view in the B-B direction;

[0041] Figure 7This is an enlarged view of the magnetic coupling tension and compression detection component in a specific embodiment of the present invention.

[0042] Explanation of reference numerals in the drawings:

[0043] Drive assembly I;

[0044] Deep - sea motor 1, lead screw 2, lead screw nut 3, coupling 4, connecting piece 5, support frame 6, bearing 7, penetrator 8;

[0045] Cylindrical support and guiding assembly II;

[0046] First cylindrical support 9, second cylindrical support 10, guiding shaft 11, first end - encapsulating cylinder 12, second end - encapsulating cylinder 13, connector 14, connector 15, connecting cylinder 16, transition sealing assembly 17, filling sealing cavity 18, support frame 19, flexible elastomer 20, first penetrator cable 21, sealing ring 22, radial bolt 23, square protrusion 24, radial sealing ring 25, bolt 26, insulating polymer flange 27, battery cell 28, sealing elastomer 29, pressing block 30, epoxy resin glue 31, sealing ring 32, radial bolt 33, bolt 34, second penetrator cable 35, bolt 36, bolt 37, bolt 38, oil - filled cavity 57, oil - filled cable 58;

[0047] Linear magnetic - coupling sensing assembly III;

[0048] Pressure - resistant cylinder 39, inner magnetic - pole assembly 40, outer magnetic - pole assembly 41, inner magnetic - pole support 42, tension and compression sensor 43, sensor support 44, elastic pad 45, sealing end - cover 46, connector 47, support frame 48, clamp 49, sealing ring 50, sealing ring 51, bolt 52, connecting support frame 59, inner core shaft 60;

[0049] Video monitoring assembly IV;

[0050] Deep - sea lighting 53, deep - sea camera 54, first mounting bracket 55, second mounting bracket 56. Specific implementation mode

[0051] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments.

[0052] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0053] The underwater connector pressure environment dynamic plug-in test platform device of this embodiment can be used to perform repeatable plug-in test analysis under pressure environment for three types of pure optical plug-in underwater connectors, pure electric plug-in underwater connectors, and optoelectronic composite plug-in underwater connectors. The test platform can be conveniently deployed in a pressure vessel or a real underwater environment. Its actual application environment pressure can reach a water depth of 7000 meters (≮70MPa), and the maximum measured plug-in force is ≮600N. It can accurately measure the insertion loss and return loss of the optical path, the contact resistance of the pins in the circuit, the insulation resistance between the pins, and the force during the plug-in process under pressure environment, and use the piercing parts to output the measured data in real time, provide dynamic monitoring of the entire plug-in process of underwater plug-in connectors, and promptly discover possible problems with the connector. The test platform can achieve repeated plug-in times of ≮200 times.

[0054] like Figure 1 , 2 As shown in Figures 5 and 6, the underwater connector pressure environment dynamic plug-in and pull-out test platform device of this embodiment includes a cylindrical support guide component II, a drive component I, a magnetic coupling tension and pressure detection component III and a video monitoring component IV. Among them, the magnetic coupling tension and pressure detection component III is a linear magnetic coupling sensor component III. Its working principle is as follows: the drive component I can make the fixedly connected underwater plug-in connector perform repeatable and precise docking and separation under the clamping of the cylindrical support guide component II. During the docking and separation process, the plug-in and pull-out support reaction force is accurately measured throughout the entire process through the linear magnetic coupling sensor component III, and the optical and electrical functional indicators, plug-in and pull-out force data and deep-sea motor control data after docking are transmitted in real time through the through-cabin component fixedly connected thereto; finally, the entire plug-in and pull-out test process is recorded and transmitted in real time by the video monitoring component IV.

[0055] like Figure 3 As shown, the function of the drive component I is to drive the connector to dock and separate according to the set axial distance. The drive component I includes a deep-sea motor 1, a screw 2, a screw nut 3, a coupling 4, a connecting part 5, a support frame 6, a bearing 7 and a cabin penetration part 8.

[0056] Among them, the deep-sea motor 1 is a deep-sea pressure-resistant power execution element, which can be an oil-filled pressure-compensated motor or a magnetic coupling drive motor.

[0057] The deep-sea motor 1 can be powered and monitored for the output of power, rotational speed, and number of revolutions through the penetrator 8.

[0058] The deep-sea motor 1 is rotationally connected to the lead screw 2 through a coupling 4. The lead screw nut 3 is rotationally matched with the lead screw 2 and fixedly connected to the connecting piece 5, and the rotation of the deep-sea motor 1 can be transmitted through the lead screw 2 to convert it into the axial movement of the connecting piece 5. The lead screw 2 is installed on the support frame 6 through bearings 7 at both ends, and the deep-sea motor 1 is fixedly installed on the semi-circular seat hole of the support frame 6 through bolts.

[0059] The support frame 6 can machine the mounting seat holes of the bearing 7 and the deep-sea motor 1 through one-time clamping, so that the mounting seat holes have high coaxiality.

[0060] The function of the cylindrical support and guide assembly II is to fix the docking ends a and b of the connector and achieve repeatable precise docking and separation, and at the same time output the optical and electrical function signals in real time after the connector is docked.

[0061] In this embodiment, the docking guiding technology of cylindrical barrel support and guide and three-axis support is adopted. The male and female connectors are encapsulated in the cylindrical barrel. The machining accuracy (cylindrical surface finish, runout, straightness, etc.) of the inner and outer diameters of the cylindrical barrel is relatively high, and the three support semi-circular holes opened on the cylindrical surface of the cylindrical barrel are relatively simple in processing technology, the hole accuracy is relatively high, and it is easy to achieve precise docking and separation of the underwater connector, and reduce the additional insertion and extraction resistance caused by non-coaxiality or yaw.

[0062] The docking ends a and b can be the male or female head of the connector. In this embodiment, the docking end a is the female head of the connector, and the docking end b is the male head of the connector.

[0063] As Figure 3 shown, the cylindrical support and guide assembly includes:

[0064] A support frame 19;

[0065] A number of guide shafts 11, fixedly installed on the support frame 19. In this embodiment, the guide shafts 11 are arranged as 3 parallel guide shafts 11.

[0066] The coaxial first cylindrical support 9 and second cylindrical support 10 are both engaged with the guiding shaft 11 and can slide along the guiding shaft 11. Semi-circular holes are provided on the outer walls of the first cylindrical support 9 and the second cylindrical support 10, and the semi-circular holes are engaged with the cylindrical guiding shaft 11. In order to increase the versatility of underwater connectors of different models, the first cylindrical support 9 and the second cylindrical support 10 in this embodiment are provided with several sizes for underwater connectors of different models, and the corresponding sizes of the first cylindrical support 9 and the second cylindrical support 10 can be selected according to the model of the connector.

[0067] The first cylindrical support 9 has a first hollow cavity coaxial with the first cylindrical support 9, and the second cylindrical support 10 has a second hollow cavity coaxial with the second cylindrical support 10.

[0068] The docking end a and the first tail-end encapsulation cylinder 12 hermetically connected to the docking end a, with part of the docking end a and part of the first tail-end encapsulation cylinder 12 located in the first hollow cavity. The first tail-end encapsulation cylinder 12 is fixedly connected to the docking end a and the first cylindrical support 9.

[0069] The docking end b and the second tail-end encapsulation cylinder 13 hermetically connected to the docking end b, with part of the docking end b and part of the second tail-end encapsulation cylinder 13 located in the second hollow cavity. The second tail-end encapsulation cylinder 13 is fixedly connected to the docking end b and the second cylindrical support 10. The second tail-end encapsulation cylinder 13 is provided with a second through-hull assembly, and the second through-hull cable 35 of the docking end b is connected to the external watertight cable through the second through-hull assembly. The second through-hull assembly includes a connecting cylinder 16 and a connector 15 located on the second tail-end encapsulation cylinder 13.

[0070] The driving assembly is used to drive the second tail-end encapsulation cylinder 13, the docking end b and the second cylindrical support 10 to move, so that the docking end b can be plugged into or separated from the docking end a.

[0071] Specifically, the cylindrical support guiding assembly II includes the first cylindrical support 9, the second cylindrical support 10, the guiding shaft 11, the first tail-end encapsulation cylinder 12, the second tail-end encapsulation cylinder 13, the connector 14, the connector 15, the connecting cylinder 16, the transition sealing assembly 17, the filling sealing cavity 18, the support frame 19, the flexible elastomer 20 and the first through-hull cable 21.

[0072] During the docking process, the docking end a can extend into the docking end b by a certain axial distance L.

[0073] The docking end a and the first tail-end encapsulation cylinder 12 are radially sealed by the sealing ring 22, and the docking end a, the first cylindrical support 9 and the first tail-end encapsulation cylinder 12 are fixedly connected together by the radial bolts 23, as Figure 6 shown.

[0074] The transition sealing assembly 17 is located inside the first tail-end encapsulation cylinder 12 and is used to divide the first tail-end encapsulation cylinder 12 into a filling and sealing cavity 18 and an oil filling cavity 57. A first through-hull assembly is arranged at the position corresponding to the filling and sealing cavity 18 of the first tail-end encapsulation cylinder 12. The first through-hull cable 21 at the docking end a is sealed by the transition sealing assembly 17 and then connected to an external watertight cable through the first through-hull assembly. The first through-hull assembly includes a connecting cylinder 16 and a connector 14 located on the first tail-end encapsulation cylinder 12.

[0075] The transition sealing assembly 17 includes a flange 27, a sealing elastomer 29, a pressing block 30 and glue 31. The flange 27 is installed on the inner wall of the first tail-end encapsulation cylinder 12. The flange 27 has a through-hole, and the middle of the inner wall of the through-hole has a step. A sealing elastomer 29 is arranged on one side of the step in the through-hole of the flange 27. The pressing block 30 is used to press-fit the sealing elastomer 29 onto the step, and glue 31 is filled between the steps in the through-hole of the flange 27 and on the other side of the step. The first through-hull cable 21 passes through the pressing block 30, the sealing elastomer 29 and the glue 31.

[0076] The inner wall of the through-hole filled with the glue 31 has a necking section, and the necking direction is from the pressing block 30 to the glue 31.

[0077] The left end of the first tail-end encapsulation cylinder 12 is a square protrusion 24. A cylindrical filling and sealing cavity 18 is opened in the square protrusion 24. The transition sealing assembly 17 is fixedly installed on the right side of the cylindrical filling and sealing cavity 18 through a radial sealing ring 25 and bolts 26. The function of the transition sealing assembly 17 is to seal and isolate the left and right cavities of the first tail-end encapsulation cylinder 12. In this example, the left cavity is the filling and sealing cavity 18, and the right cavity is the oil filling cavity 57. Under the flexible compensation of the oil filling cable 58, the pressure in the right cavity can change equivalently with the change of the underwater environmental pressure. The left filling and sealing cavity 18 is a dry cabin, and glue can also be injected and sealed (in a high pressure difference environment) or gel can be filled (in a low pressure difference environment) after the connection and assembly of the first through-hull cable 21; the first through-hull cable 21 passes through the transition sealing assembly 17 for sealing. The first through-hull cable 21 can be a cable, an optical fiber cable, or an optical and electrical composite cable. In this example, it is an optical and electrical composite cable.

[0078] The transition sealing assembly 17 includes an electric core 28 located inside the flange 27, and the first through-hull cable 21 is connected to the electric core 28.

[0079] Specifically, as Figure 4 shown, the transition sealing assembly 17 includes an insulating polymer flange 27, an electric core 28, a sealing elastomer 29, a pressing block 30 and epoxy resin glue 31.

[0080] The insulating polymer flange 27 and the battery core 28 are integrally formed and packaged by molding or injection, so that the two form a densely insulated single part body. The cable in the first cabin penetration cable 21 is input through welding on the right side of the part body and output through welding on the left side, thereby achieving electrical conduction between the two cavities under sealed conditions.

[0081] The sealing elastomer 29 is installed in the insulating polymer flange 27 at the inner hole with the same diameter as the inner hole, and the sealing elastomer 29 is provided with a through hole with a size similar to the diameter of the optical fiber in the first cabin penetration cable 21. The optical fiber in the first cabin penetration cable 21 passes through the through hole in the sealing elastomer 29. The external thread of the pressing block 30 is matched with the internal thread of the insulating polymer flange 27 for installation. The sealing elastomer 29 is axially squeezed by tightening the pressing block 30. Through the axial compression of the sealing elastomer 29 and the isotropy of the elastomer material, a radial extrusion seal can be formed between the sealing elastomer 29 and the optical fiber in the first cabin penetration cable 21. After the seal is formed, the first cabin penetration cable 21 is sealed by filling the epoxy resin glue 31. The optical fiber and the transition sealing assembly 17 form a double seal to ensure that the optical fiber in the first cabin penetration cable 21 will not fail to seal under high pressure environment, thereby achieving reliable sealing; the filling shape of the epoxy resin glue 31 is an inverted cone, which can prevent it from axially dislodging due to the high pressure environment on the right side; a round through hole, an O-ring mounting groove and a flange mounting threaded hole are opened on the upper part of the square protrusion 24, and are sealed and fixedly connected to the connecting tube 16. The connecting tube 16 and the connector 14 are sealed and fixedly connected through a radial sealing ring. The first cabin penetration cable 21 that passes through the filling sealing cavity 18 is connected to the connector 14 through the upper round through hole of the square protrusion 24 and the connecting tube 16, and is output through a watertight cable connected to the outside of the connector 14.

[0082] The docking end b and the second tail-end encapsulation cylinder 13 are radially sealed by the sealing ring 32, and the two are fixedly connected together by the radial bolt 33. A circular flange is provided at the right end of the second tail-end encapsulation cylinder 13, and it is fixedly connected to the second cylindrical support 10 by the bolt 34. A circular through-hole, an O-ring installation groove, and a flange installation threaded hole are provided in the upper right part of the second tail-end encapsulation cylinder 13, and it is hermetically and fixedly connected to the connection cylinder 16. The connection cylinder 16 and the connector 15 are hermetically and fixedly connected by a radial sealing ring. The second through-cabin cable 35 output from the tail end of the docking end b passes through the circular through-hole in the upper right part of the second tail-end encapsulation cylinder 13, the connection cylinder 16, and is connected to the connector 15, and is output through the watertight cable connected to the outside of the connector 15; there is an elastomer 20 between the cylindrical support guiding assembly and the driving assembly. Specifically, a flexible elastomer 20 is clamped between the flange at the right tail of the second tail-end encapsulation cylinder 13 and the flange of the connecting member 5, and is fixedly connected by the bolt 36. The function of the flexible elastomer 20 is to perform flexible connection and force transmission when there are axial position deviations and angular deviations between the driving assembly I and the cylindrical support guiding assembly II, and to ensure the smooth docking and separation of the docking end a and the docking end b in the cylindrical support guiding assembly II.

[0083] The three semi-circular holes in the first cylindrical support 9 and the second cylindrical support 10 are slidably supported and installed by three guiding shafts 11 arranged circumferentially and evenly. The guiding shafts 11 are fixedly installed on the support frame 19 by the bolts 37 and 38; the purpose and advantages of adopting this kind of support and guidance are as follows: The first cylindrical support 9 and the second cylindrical support 10 can adopt a whole piece of material, and features such as the cylindrical outer diameter, semi-circular holes, and inner holes with the same dimensions can be machined through one clamping. After machining, it is cut to obtain the first cylindrical support 9 and the second cylindrical support 10. By adopting this process method, the first cylindrical support 9 and the second cylindrical support 10 have relatively high centering accuracy, and the repetitive plugging and unplugging operations between the docking end a and the docking end b can be realized.

[0084] As Figure 7 shown, the magnetic coupling tensile and compressive force detection assembly III includes: a pressure-resistant cylinder 39, an inner magnetic pole assembly 40, an outer magnetic pole assembly 41, a tensile and compressive force sensor 43, a sensor support 44, an elastic pad 45, a sealing end cover 46, a connector 47, a support frame 48, a clamp 49, and a connection support frame 59.

[0085] The pressure-resistant cylinder 39 is sealed by the sealing end cover 46.

[0086] Specifically, the pressure-resistant cylinder 39 includes a coaxial inner cylinder and an outer cylinder. The first end of the outer cylinder is sealed by the sealing end cover 46, the second end of the outer cylinder is connected to the second end of the inner cylinder through a connecting part, and the first end of the inner cylinder is a closed end.

[0087] The inner magnetic pole assembly 40 is located inside the pressure-resistant cylinder 39.

[0088] Furthermore, the inner magnetic pole assembly 40 is located between the inner cylinder and the outer cylinder.

[0089] The inner magnetic pole assembly 40 includes a plurality of magnetic rings and a cylindrical support member for mounting the magnetic rings, and the polarities of two adjacent magnetic rings are opposite.

[0090] The inner magnetic pole assembly 40 includes a magnetic pole portion formed by adhesively bonding several magnetic rings with different magnetic polarities and an inner magnetic pole support member 42. The inner magnetic pole support member 42 is cylindrical, and the magnetic pole portion is located on the inner wall of the cylindrical inner magnetic pole support member 42. The magnetic pole portion and the inner magnetic pole support member 42 are fixedly connected by bolts.

[0091] The inner magnetic pole support member 42 is processed from a polymer material with wear-resistant and self-lubricating functions and is slidably installed in the pressure-resistant cylinder 39.

[0092] The tensile and compressive force sensor 43 is used to detect tensile and compressive forces.

[0093] The tensile and compressive force sensor 43 is located on the axis of the pressure-resistant cylinder 39 to improve the accuracy of force detection.

[0094] The tensile and compressive force sensor 43 is fixedly connected to the sensor support member 44 and the inner magnetic pole support member 42.

[0095] The sensor support member 44 is fixedly installed in the pressure-resistant cylinder 39. One end of the tensile and compressive force sensor 43 is installed on the sensor support member 44, and the other end of the tensile and compressive force sensor 43 is connected to the inner magnetic pole assembly 40.

[0096] The sensor support member 44 has a cylindrical portion adapted to the inner wall of the outer cylinder and a sensor mounting portion located at one end of the cylindrical portion. Through holes are provided on both the cylindrical portion and the sensor mounting portion for wire passing and weight reduction.

[0097] The magnetic force coupling tensile and compressive force detection assembly III further includes a connecting support frame 59. The connecting support frame 59 includes a cylindrical portion and a mounting portion located outside the barrel wall of the cylindrical portion. The mounting portion is installed on the inner magnetic pole assembly 40 by screws or studs. The other end of the tensile and compressive force sensor 43 is installed on the bottom of the barrel of the cylindrical portion. The inner wall of the cylindrical portion of the connecting support frame 59 is in clearance fit with the outer wall of a part of the inner cylinder, which can further ensure the sliding stability of the inner magnetic pole assembly. Under deep-sea high pressure, the inner wall of the inner cylinder will have a slight concave deformation. In order to eliminate the influence of the inner cylinder wall deformation on the inner wall of the cylindrical portion, a certain clearance is left.

[0098] A gap is provided between the inner magnetic pole assembly 40 and the connecting portion, which can prevent the deformation of the connecting portion in the deep-sea environment from affecting the inner magnetic pole assembly 40.

[0099] There is an elastic pad 45 between the sealed end cap 46 and the sensor support 44. When the sealed end cap 46 is concave and deformed under pressure, the deformation can be absorbed by the deformation of the elastic pad 45, and the tensile and compressive force sensor 43 is not affected, and the measurement accuracy of the insertion and extraction force will not be affected.

[0100] The outer magnetic pole assembly 41 is located outside the pressure-resistant cylinder 39.

[0101] The outer magnetic pole assembly 41 is located in the space enclosed by the inner cylinder.

[0102] The outer magnetic pole assembly 41 can move axially along the pressure-resistant cylinder 39. The outer magnetic pole assembly 41 and the inner magnetic pole assembly 40 have opposite magnets, and the polarities of the opposite faces of the opposite magnets of the outer magnetic pole assembly 41 and the inner magnetic pole assembly 40 are opposite; the outer magnetic pole assembly 41 has a force-receiving end, and the force-receiving end is connected to the cylindrical support and guiding assembly II.

[0103] The outer magnetic pole assembly 41 includes a plurality of magnetic rings and a cylindrical support for installing the magnetic rings, and the polarities of adjacent two magnetic rings are opposite.

[0104] The outer magnetic pole assembly 41 includes a magnetic pole part formed by bonding several magnetic rings with different magnetic poles at intervals and an outer magnetic pole support. The outer magnetic pole support is cylindrical, and the magnetic pole part is located on the outer wall of the outer magnetic pole support. The magnetic pole part and the outer magnetic pole support are fixedly connected by bolts.

[0105] The arrangement of the magnetic ring magnetic poles of the outer magnetic pole assembly 41 is opposite to the arrangement of the inner magnetic pole assembly 40.

[0106] When the outer magnetic pole assembly 41 is not subjected to external tensile and compressive forces, there is a certain gap between the outer magnetic pole assembly 41 and the closed end. In the axial direction of the inner cylinder, the width of the gap is less than or equal to half of the width of the magnetic ring. When encountering other sudden factors that cause excessive force, the gap can form a protection against magnetic misalignment. On the one hand, there is no magnetic misalignment in this embodiment, and on the other hand, the maximum tensile force that the tensile and compressive force sensor 43 can receive is protected.

[0107] An axial coupling force between magnetic poles is formed between the inner magnetic pole assembly 40 and the outer magnetic pole assembly 41 in the axial direction. The axial force is transmitted to the inner magnetic pole assembly 40 and the tensile and compressive force sensor 43 fixedly connected thereto by the outer magnetic pole assembly 41 in a magnetic coupling manner, realizing a non-contact transmission of the insertion and extraction force.

[0108] All magnets are equipped with yokes to improve the coupling force between magnetic poles.

[0109] The magnetic coupling tensile and compressive force detection assembly III includes an inner core shaft 60. The outer magnetic pole assembly 41 is installed on the outer wall of the inner core shaft 60, and the end of the inner core shaft 60 is the force-receiving end.

[0110] The cylindrical support of the outer magnetic pole assembly 41 is sleeved on the inner core shaft 60.

[0111] The inner cylinder of the pressure-resistant cylinder 39 includes a coaxial first cylinder wall and a second cylinder wall. The diameter of the first cylinder wall is greater than that of the second cylinder wall. The magnetic ring of the outer magnetic pole assembly 41 is close to the second cylinder wall, and the magnetic ring of the inner magnetic pole assembly 40 is close to the first cylinder wall.

[0112] A connector 47 is provided on the sealing end cover 46, and the cable of the tensile and compressive force sensor 43 is connected to the connector 47. The sealing end cover 46 and the sealing ring 51 are fixedly installed on the pressure-resistant cylinder 39 through bolts 52 to form a sealed cavity. A connector 47 is installed on the sealing end cover 46. The data line of the tensile and compressive force sensor 43 is connected to the connector 47 in the sealed cavity, and the measured value of the insertion and extraction force is output through the connector 47 by using an external watertight cable.

[0113] Therefore, the magnetic force coupling tensile and compressive force detection component of this embodiment can ensure the tightness of the tensile and compressive force sensor while accurately measuring the force.

[0114] The function of the linear magnetic force coupling sensing component III is to serve as a supporting component for the axial force of the docking end a, and transfer the docking force and separation force acting on it by the docking end b in a non-contact manner through linear magnetic force coupling. The precise measurement of the connector insertion and extraction force is realized by using static sealing. In the complex environment of high pressure in the deep sea, this method has high application value.

[0115] Through calculation and analysis, the tensile and compressive force that can be borne by the magnetic pole size, the number of magnetic rings and the arrangement form of the magnetic rings in this embodiment is not less than 600N. A flange is provided at the end of the inner core shaft 60 in the outer magnetic pole assembly 41. A circular through hole, an O-ring sealing groove and a mounting flange threaded hole are provided on the left side of the square protrusion 24. The flange of the inner core shaft 60 in the outer magnetic pole assembly 41 is hermetically and fixedly connected to the left side of the square protrusion 24 through a sealing ring 50; the cylindrical support and guiding component II transfers the axial force to the inner magnetic pole assembly 40 and the tensile and compressive force sensor 43 fixedly connected thereto through the outer magnetic pole assembly 41 in a magnetic force coupling manner to realize non-contact transfer of the insertion and extraction force; the sealing end cover 46 and the sealing ring 51 are fixedly installed on the pressure-resistant cylinder 39 through bolts 52 to form a sealed cavity, and the sealed cavity is fixedly installed on the support frame 48 through a clamp 49; a connector 47 is installed on the sealing end cover 46. The data line of the tensile and compressive force sensor 43 is connected to the connector 47 in the sealed cavity, and the measured value of the insertion and extraction force is output through the connector 47 by using an external watertight cable.

[0116] Magnets are all equipped with yokes to improve the coupling force between magnetic poles.

[0117] The video monitoring component IV is used to monitor the plugging or unplugging process of the docking end a and the docking end b. The function of the video monitoring component IV is to record the whole process of the connector during docking and unplugging. Combining the measured insertion and extraction force data, it comprehensively analyzes the reliability and stability of the connector during repeated plugging and unplugging, especially when the cumulative number of plugging and unplugging is higher than 100 times. And it conducts refined analysis based on the problems that occur to accelerate the iterative optimization of the connector. As Figure 2 shown, the video monitoring component IV mainly consists of a deep-sea lighting 53, a deep-sea camera 54, a first mounting bracket 55, a second mounting bracket 56, etc. The deep-sea lighting 53 and the deep-sea camera 54 are respectively fixed by the first mounting bracket 55 and the second mounting bracket 56 through clamps and installed on the test platform base 57. The position of the video monitoring component IV is not limited, but it should be able to cover the movement range of the connector interface.

[0118] The support frames 6, 19, and 48 are all fixedly installed on the test platform base 57 by bolts.

[0119] The device includes a host computer, which is connected to an external watertight cable to output signals to the underwater connector and receive signals from the underwater connector. The host computer is connected to the magnetic coupling pull and pressure detection component to receive the pull and pressure signals output by the magnetic coupling pull and pressure detection component. The host computer is connected to the drive component to control the drive component. The host computer is connected to the video monitoring component to receive the video signals output by the video monitoring component.

[0120] Therefore, the platform device in this embodiment realizes the repeatable and precise docking and separation of the underwater connector by means of deep-sea motor drive, cylindrical support and guidance, etc. At the same time, it uses a pull and pressure sensor fixedly installed by static seal and adopts a linear magnetic coupling method to achieve non-contact and precise measurement of the insertion and extraction force of the underwater connector. The test platform also integrates multiple types of data transmission interfaces and devices such as deep-sea lighting and cameras, which can output the measured data of optical and electrical function indicators and insertion and extraction force in real time through the cabin, and conduct real-time monitoring of the whole process of the test, which is beneficial to the overall test and analysis of the working performance of the underwater connector in a high-pressure environment.

[0121] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. An underwater connector pressure environment dynamic plugging and unplugging test platform device, characterized in that, it includes a cylindrical support and guiding component, a driving component, a magnetic coupling tensile and compressive force detection component, and a video monitoring component; The cylindrical support and guiding component includes: A support frame (19); A plurality of guiding shafts (11), fixedly installed on the support frame (19); Coaxial first cylindrical support (9) and second cylindrical support (10), both of which cooperate with the guiding shafts (11) and can slide along the guiding shafts (11); the first cylindrical support (9) has a first hollow cavity coaxial with the first cylindrical support (9), and the second cylindrical support (10) has a second hollow cavity coaxial with the second cylindrical support (10); A docking end a and a first tail end encapsulation cylinder (12) hermetically connected to the docking end a, a part of the docking end a and a part of the first tail end encapsulation cylinder (12) are located in the first hollow cavity, and the first tail end encapsulation cylinder (12) is fixedly connected to the docking end a and the first cylindrical support (9); A docking end b and a second tail end encapsulation cylinder (13) hermetically connected to the docking end b, a part of the docking end b and a part of the second tail end encapsulation cylinder (13) are located in the second hollow cavity, and the second tail end encapsulation cylinder (13) is fixedly connected to the docking end b and the second cylindrical support (10); the second tail end encapsulation cylinder (13) is provided with a second cable passing through the hull component, and the second cable passing through the hull (35) of the docking end b is connected to an external watertight cable through the second cable passing through the hull component; A transition sealing component (17), located in the first tail end encapsulation cylinder (12), is used to divide the first tail end encapsulation cylinder (12) into a filling and sealing cavity (18) and an oil filling cavity (57), and a first cable passing through the hull component is arranged at a position corresponding to the filling and sealing cavity (18) of the first tail end encapsulation cylinder (12), and the first cable passing through the hull (21) of the docking end a is hermetically sealed through the transition sealing component (17) and then connected to an external watertight cable through the first cable passing through the hull component; The driving component is used to drive the second tail end encapsulation cylinder (13), the docking end b and the second cylindrical support (10) to move, so that the docking end b is plugged or separated from the docking end a; The magnetic coupling tensile and compressive force detection component is connected to the first tail end encapsulation cylinder (12) and is used to detect the force received by the docking end a; A video monitoring component, used to monitor the plugging or separating process of the docking end a and the docking end b; The magnetic coupling tensile and compressive force detection component includes: A pressure-resistant cylinder (39), and the pressure-resistant cylinder (39) is sealed by a sealing end cover (46); An inner magnetic pole component (40), located inside the pressure-resistant cylinder (39); A tensile and compressive force sensor (43); A sensor support (44), fixedly installed inside the pressure-resistant cylinder (39), and one end of the tensile and compressive force sensor (43) is installed on the sensor support (44); A connecting support frame (59), installed on the inner magnetic pole component (40), and the other end of the tensile and compressive force sensor (43) is installed on the connecting support frame (59); The outer magnetic pole assembly (41) is located outside the pressure-resistant cylinder (39). The outer magnetic pole assembly (41) can move axially along the pressure-resistant cylinder (39). The outer magnetic pole assembly (41) and the inner magnetic pole assembly (40) have opposite magnets, and the polarities of the opposite faces of the opposite magnets of the outer magnetic pole assembly (41) and the inner magnetic pole assembly (40) are opposite. The outer magnetic pole assembly (41) is connected to the first tail-end encapsulation cylinder (12).

2. The underwater connector pressure environment dynamic plugging and unplugging test platform device according to claim 1, characterized in that, The transition sealing assembly (17) includes a flange (27), a sealing elastomer (29), a pressing block (30) and glue (31). The flange (27) is installed on the inner wall of the first tail-end encapsulation cylinder (12). The flange (27) has a through hole. The middle of the inner wall of the through hole has a step. One side of the step in the through hole is provided with a sealing elastomer (29). The pressing block (30) is used to press-fit the sealing elastomer (29) on the step. The glue (31) is filled between the steps in the through hole and on the other side of the step. The first cable passing through the cabin (21) passes through the pressing block (30), the sealing elastomer (29) and the glue (31).

3. The underwater connector pressure environment dynamic plugging and unplugging test platform device according to claim 2, characterized in that, The inner wall of the through hole filled with the glue (31) has a necking section, and the necking direction is from the pressing block (30) to the glue (31).

4. The underwater connector pressure environment dynamic plugging and unplugging test platform device according to claim 2, characterized in that, The transition sealing assembly (17) includes an electric core (28) located inside the flange (27). The first cable passing through the cabin (21) is connected to the electric core (28).

5. The underwater connector pressure environment dynamic plugging and unplugging test platform device according to claim 1, characterized in that, Both the outer magnetic pole assembly (41) and the inner magnetic pole assembly (40) include a plurality of magnetic rings, and the polarities of adjacent two magnetic rings are opposite.

6. The underwater connector pressure environment dynamic plugging and unplugging test platform device according to claim 1, characterized in that, The pressure-resistant cylinder (39) includes a coaxial inner cylinder and an outer cylinder. The first end of the outer cylinder is sealed by a sealing end cover (46). The second end of the outer cylinder is connected to the second end of the inner cylinder through a connecting part. The first end of the inner cylinder is a closed end. The inner magnetic pole assembly (40) is located between the inner cylinder and the outer cylinder. The outer magnetic pole assembly (41) is located in the space surrounded by the inner cylinder.

7. The underwater connector pressure environment dynamic plugging and unplugging test platform device according to claim 6, characterized in that, There is a gap between the inner magnetic pole assembly (40) and the connecting part, and there is an elastic pad (45) between the sealing end cover (46) and the sensor support (44).

8. The underwater connector pressure environment dynamic plugging and unplugging test platform device according to claim 1, characterized in that, There is an elastomer (20) between the cylindrical support and guiding assembly and the driving assembly.

9. The underwater connector pressure environment dynamic plugging and unplugging test platform device according to any one of claims 1-8, characterized in that, the device comprises a host computer, the host computer is connected to an external watertight cable, the host computer is connected to the magnetic coupling tensile and compressive force detection component to receive the tensile and compressive force signal output by the magnetic coupling tensile and compressive force detection component, and the host computer is connected to the driving component to control the driving component.

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