Underwater Tensile and Compressive Force Detection Component

Abstract

The present invention discloses an underwater tensile and compressive force detection assembly, which includes a pressure-resistant cylinder, an inner magnetic pole assembly, a tensile and compressive force sensor, a sensor support, and an outer magnetic pole assembly. The pressure-resistant cylinder is sealed by a sealing end cover; the inner magnetic pole assembly is located inside the pressure-resistant cylinder; the sensor support is fixedly installed inside the pressure-resistant cylinder, one end of the tensile and compressive force sensor is installed on the sensor support, and the other end of the tensile and compressive force sensor is connected to the inner magnetic pole assembly; the outer magnetic pole assembly is 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 has a force-receiving end. The present invention adopts the method of magnetic force coupling to realize the non-contact transmission of the force between the two magnetic poles, ensuring the sealing of the tensile and compressive force sensor while accurately measuring the force applied.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater force detection, and particularly to an underwater tensile and compressive force detection component. Background Art

[0002] Tensile and compressive force sensors generally need to be in direct contact with the stressed object to detect the force on the object. Underwater, especially in the ultra-high pressure environment of the deep sea, there is generally no effective method for directly measuring 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. Summary of the Invention

[0003] Based on this, the present invention provides an underwater tensile and compressive force detection component, which solves the technical problem that a tensile and compressive force sensor cannot be directly applied to underwater to detect underwater forces.

[0004] To achieve the above invention object, the present invention is implemented by the following technical solutions:

[0005] An underwater tensile and compressive force detection component, comprising:

[0006] A pressure-resistant cylinder, which is sealed by a sealing end cover;

[0007] An inner magnetic pole assembly, located inside the pressure-resistant cylinder;

[0008] A tensile and compressive force sensor;

[0009] A sensor support member, fixedly installed inside the pressure-resistant cylinder, one end of the tensile and compressive force sensor is installed on the sensor support member, and the other end of the tensile and compressive force sensor is connected to the inner magnetic pole assembly;

[0010] 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 surfaces of the opposite magnets of the outer magnetic pole assembly and the inner magnetic pole assembly are opposite; the outer magnetic pole assembly has a force-receiving end.

[0011] For the underwater tensile and compressive force detection component as described above, both the outer magnetic pole assembly and the inner magnetic pole assembly include a plurality of magnetic rings and a cylindrical support member for installing the magnetic rings, and the polarities of adjacent two magnetic rings are opposite.

[0012] For the underwater tensile and compressive force detection component as described above, the tensile and compressive force sensor is located on the axis of the pressure-resistant cylinder.

[0013] For the underwater tensile and compressive force detection component as described above, the detection component includes an inner core shaft, the outer magnetic pole assembly is installed on the inner core shaft, and the inner core shaft has a force-receiving end.

[0014] The underwater tensile and compressive force detection component as described above, wherein the sensor support member 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, and through holes are provided on both the cylindrical portion and the sensor mounting portion.

[0015] The underwater tensile and compressive force detection component as described above, wherein a connector is provided on the sealed end cover, and the cable of the tensile and compressive force sensor is connected to the connector.

[0016] The underwater tensile and compressive force detection component as described above, wherein the pressure-resistant cylinder includes a coaxial inner cylinder and an outer cylinder, the first end of the outer cylinder is sealed by a sealed end cover, the second end of the outer cylinder is connected to the second end of the inner cylinder through a connecting portion, 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 surrounded by the inner cylinder.

[0017] The underwater tensile and compressive force detection component as described above, when the outer magnetic pole assembly is not subjected to an external tensile force, there is a certain gap between the outer magnetic pole assembly and the closed end, and 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 magnet.

[0018] The underwater tensile and compressive force detection component as described above, there is a gap between the inner magnetic pole assembly and the connecting portion, and an elastic pad is provided between the sealed end cover and the sensor support member.

[0019] The underwater tensile and compressive force detection component as described above, the detection component includes a connecting support frame, the connecting support frame includes a cylindrical portion and a mounting portion located outside the barrel wall of the cylindrical portion, the mounting portion is mounted on the inner magnetic pole assembly, the other end of the tensile and compressive force sensor is mounted on the bottom of the barrel of the cylindrical portion, and the inner wall of the cylindrical portion of the connecting support frame is in clearance fit with the outer wall of a part of the inner cylinder.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The underwater tensile and compressive force detection component of the present invention includes a pressure-resistant cylinder, an inner magnetic pole component, a tensile and compressive force sensor, a sensor support, and an outer magnetic pole component. The pressure-resistant cylinder is sealed by a sealing end cover; the inner magnetic pole component is located inside the pressure-resistant cylinder; the sensor support is fixedly installed inside the pressure-resistant cylinder, one end of the tensile and compressive force sensor is installed on the sensor support, and the other end of the tensile and compressive force sensor is connected to the inner magnetic pole component; the outer magnetic pole component is located outside the pressure-resistant cylinder, the outer magnetic pole component can move axially along the pressure-resistant cylinder, the outer magnetic pole component and the inner magnetic pole component have opposite magnets, and the polarities of the opposite surfaces of the opposite magnets of the outer magnetic pole component and the inner magnetic pole component are opposite; the outer magnetic pole component has a force-receiving end. The present invention adopts the method of magnetic coupling, utilizes the attraction force (between opposite magnetic poles) and repulsive force (between like magnetic poles) between magnetic poles to realize the non-contact transmission of force between the two magnetic poles, and can effectively enable the high-precision tensile and compressive force sensor in a water-sealed package to directly measure the force acting on another magnetic pole and its fixedly connected actuator in the deep-sea environment by measuring the axial acting force of the integrally packaged magnetic poles. The present invention ensures the tightness of the tensile and compressive force sensor while accurately measuring the force.

[0021] 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. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for use in the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 Schematic diagram of the underwater tensile and compressive force detection component in the specific embodiment of the present invention.

[0024] Figure 2 Schematic diagram of the underwater connector pressure environment dynamic plugging and unplugging test platform device in the specific embodiment of the present invention;

[0025] Figure 3 For Figure 2 Top view;

[0026] Figure 4 For Figure 3 Cross-sectional view taken along line A-A;

[0027] Figure 5 For Figure 4 Enlarged view of 17 in

[0028] Figure 6 For Figure 2 Side view;

[0029] Figure 7 For Figure 3 Cross-sectional view taken along the B-B direction;

[0030] Description of reference numerals:

[0031] Drive assembly I;

[0032] Deep-sea motor 1, lead screw 2, lead screw nut 3, coupling 4, connecting member 5, support frame 6, bearing 7, through-hull member 8;

[0033] Cylindrical support and guiding assembly II;

[0034] First cylindrical support 9, second cylindrical support 10, guiding shaft 11, first end-sealing cylinder 12, second end-sealing cylinder 13, connector 14, connector 15, connecting cylinder 16, transition sealing assembly 17, filling sealing cavity 18, support frame 19, flexible elastomer 20, first through-hull 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 through-hull cable 35, bolt 36, bolt 37, bolt 38, oil-filled cavity 57, oil-filled cable 58;

[0035] Linear magnetic coupling sensing assembly III;

[0036] Pressure-resistant cylinder 39, inner magnetic pole assembly 40, outer magnetic pole assembly 41, inner magnetic pole support 42, tensile and compressive force 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;

[0037] Video monitoring assembly IV;

[0038] Deep-sea lighting 53, deep-sea camera 54, first mounting bracket 55, second mounting bracket 56. Detailed implementation manners

[0039] 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 accompanying drawings and embodiments.

[0040] It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] This embodiment provides an underwater tensile and compressive force detection component for measuring the force underwater while ensuring the sealing of the tensile and compressive force sensor during accurate force measurement.

[0042] As Figure 1 shown: An underwater tensile and compressive force detection component 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 connecting support frame 59.

[0043] The pressure-resistant cylinder 39 is sealed by the sealing end cover 46.

[0044] 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 portion, and the first end of the inner cylinder is a closed end.

[0045] The inner magnetic pole assembly 40 is located inside the pressure-resistant cylinder 39.

[0046] Furthermore, the inner magnetic pole assembly 40 is located between the inner cylinder and the outer cylinder.

[0047] The inner magnetic pole assembly 40 includes several magnetic rings and a cylindrical support for installing the magnetic rings, and the polarities of adjacent two magnetic rings are opposite.

[0048] The inner magnetic pole assembly 40 includes a magnetic pole portion formed by bonding several magnetic rings with different magnetic poles at intervals and an inner magnetic pole support 42. The inner magnetic pole support 42 is cylindrical, and the magnetic pole portion is located on the inner wall of the cylindrical inner magnetic pole support 42. The magnetic pole portion is fixedly connected to the inner magnetic pole support 42 by bolts.

[0049] The inner magnetic pole support 42 is processed from a polymer material with wear-resistant and self-lubricating functions and is slidably installed inside the pressure-resistant cylinder 39.

[0050] The tensile and compressive force sensor 43 is used to detect the tensile and compressive force.

[0051] 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.

[0052] The tensile and compressive force sensor 43 is fixedly connected to the sensor support 44 and the inner magnetic pole support 42.

[0053] The sensor support 44 is fixedly installed inside the pressure-resistant cylinder 39. One end of the tensile and compressive force sensor 43 is installed on the sensor support 44, and the other end of the tensile and compressive force sensor 43 is connected to the inner magnetic pole assembly 40.

[0054] The sensor support 44 has a cylindrical part adapted to the inner wall of the outer cylinder and a sensor installation part located at one end of the cylindrical part. Through holes are provided on both the cylindrical part and the sensor installation part for wire passing and weight reduction.

[0055] The detection assembly further includes a connecting support frame 59. The connecting support frame 59 includes a cylindrical part and an installation part located outside the cylindrical wall of the cylindrical part. The installation part 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 part. The inner wall of the cylindrical part of the connecting support frame 59 is in clearance fit with the outer wall of part of the inner cylinder, which can further ensure the stability of the sliding of the inner magnetic pole assembly. Under the deep-sea high pressure, the inner wall of the inner cylinder will produce a slight concave deformation. In order to eliminate the influence of the deformation of the inner cylinder wall on the inner wall of the cylindrical part, a certain clearance is left.

[0056] A gap is provided between the inner magnetic pole assembly 40 and the connecting part, which can prevent the deformation of the connecting part in the deep-sea environment from affecting the inner magnetic pole assembly 40.

[0057] There is an elastic pad 45 between the sealing end cover 46 and the sensor support 44. When the sealing end cover 46 is concave 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.

[0058] The outer magnetic pole assembly 41 is located outside the pressure-resistant cylinder 39.

[0059] The outer magnetic pole assembly 41 is located in the space surrounded by the inner cylinder.

[0060] 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 surfaces 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.

[0061] The outer magnetic pole assembly 41 includes several magnetic rings and a cylindrical support for installing the magnetic rings, and the polarities of two adjacent magnetic rings are opposite.

[0062] 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 is fixedly connected to the outer magnetic pole support by bolts.

[0063] The magnetic pole arrangement of the outer magnetic pole assembly 41 is opposite to that of the inner magnetic pole assembly 40.

[0064] When the outer magnetic pole assembly 41 is not subject to external tensile or 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 excessive forces are caused by other unexpected factors, the gap can form a protection against magnetic misalignment. On the one hand, this embodiment will not have magnetic misalignment, and on the other hand, it protects the maximum tensile force that the tensile force sensor 43 can receive.

[0065] An inter-pole coupling force 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 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.

[0066] The magnets are all equipped with yokes to improve the inter-pole coupling force.

[0067] The detection assembly 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.

[0068] The cylindrical support of the outer magnetic pole assembly 41 is sleeved on the inner core shaft 60.

[0069] 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.

[0070] A connector 47 is provided on the sealing end cover 46. The cable of the tensile 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 by bolts 52 to form a sealed cavity. A connector 47 is installed on the sealing end cover 46. The data line of the tensile 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 by the connector 47 using an external watertight cable.

[0071] Therefore, the underwater tensile force detection assembly of this embodiment can ensure the sealing of the tensile force sensor while accurately measuring the force.

[0072] Next, taking the underwater pull - pressure detection component applied in the dynamic plug - and - unplug test platform device for underwater connector pressure environment as an example for further specific description, the test platform device can be used for repeatable plug - and - unplug test analysis under pressure environment for three types of underwater connectors: pure optical plug - and - unplug underwater connectors, pure electrical plug - and - unplug underwater connectors, and optical - electrical composite plug - and - unplug underwater connectors. This test platform can be conveniently placed in a pressure chamber or a real underwater environment. Its actual application environmental pressure can reach a water depth of 7000 meters (≥70 MPa), the maximum measured plug - and - unplug force ≥600 N. It can accurately measure the insertion loss, return loss of the optical path, contact resistance of pins in the circuit, insulation resistance between pins, and the force during the plug - and - unplug process under pressure environment, and use the feed - through components in the pressure chamber to output the measured data in real - time, providing dynamic monitoring of the entire process of underwater plug - and - unplug connectors, promptly discovering possible problems of the connectors, and this test platform can achieve a repeatable plug - and - unplug number ≥200 times.

[0073] As Figure 1 , 2 , as shown in Figure 5, the dynamic plug - and - unplug test platform device for underwater connector pressure environment in this embodiment is characterized by including a cylindrical support and guiding component II, a driving component I, an underwater pull - pressure detection component III, and a video monitoring component IV. Among them, the underwater pull - pressure detection component III is a linear magnetic - coupling sensing component III. Its working principle is as follows: The driving component I can make the fixedly connected underwater plug - and - unplug connector be accurately docked and separated repeatedly under the clamping of the cylindrical support and guiding component II. During the docking and separation process, the reaction forces during insertion and extraction are accurately measured throughout the whole process by the linear magnetic - coupling sensing component III, and the optical and electrical function indicators, plug - and - unplug force data, and deep - sea motor control data after docking are transmitted in real - time through the feed - through component fixedly connected to it; finally, the entire plug - and - unplug test process is video - recorded and transmitted in real - time by the video monitoring component IV.

[0074] As Figure 3 shown, the function of the driving component I is to drive the connector to perform docking and separation operations according to the set axial distance. The driving component I includes a deep - sea motor 1, a lead screw 2, a lead - screw nut 3, a coupling 4, a connecting piece 5, a support frame 6, a bearing 7, and a feed - through component 8.

[0075] 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.

[0076] It can be powered and monitored for power output, rotational speed, and number of revolutions through the feed - through component 8.

[0077] The deep - sea motor 1 is rotationally connected to the lead screw 2 through a coupling 4. The lead - screw nut 3 is rotationally engaged with the lead screw 2 and fixedly connected to the connecting member 5, which can convert the rotation of the deep - sea motor 1 into the axial movement of the connecting member 5 through the transmission of the lead screw 2. 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.

[0078] 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 a high coaxiality.

[0079] The function of the cylindrical support and guiding 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.

[0080] In this embodiment, the docking guiding technology of cylindrical barrel support and guiding and three - axis support is adopted. The male and female connectors are encapsulated in the cylindrical barrel. The machining precision (such as cylindrical surface finish, run - out, 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 precision is relatively high, which 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.

[0081] The docking end a and the docking end 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.

[0082] The cylindrical support and guiding assembly includes:

[0083] A support frame 19;

[0084] A number of guiding shafts 11, fixedly installed on the support frame 19. In this embodiment, the guiding shafts 11 are set to 3 parallel guiding shafts 11.

[0085] Coaxial first cylindrical support 9 and second cylindrical support 10, both of which are engaged with the guiding shafts 11 and can slide along the guiding shafts 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 shafts 11. In order to increase the versatility of different models of underwater connectors, in this embodiment, the first cylindrical support 9 and the second cylindrical support 10 are provided with several sizes for different models of underwater connectors, 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.

[0086] 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.

[0087] The docking end a and the first tail-end encapsulation cylinder 12 that is hermetically connected to the docking end a. Part of the docking end a and part of the first tail-end encapsulation cylinder 12 are located within 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.

[0088] The docking end b and the second tail-end encapsulation cylinder 13 that is hermetically connected to the docking end b. Part of the docking end b and part of the second tail-end encapsulation cylinder 13 are located within the second hollow cavity. The second tail-end encapsulation cylinder 13 is fixedly connected to the docking end b and the second cylindrical support 9. The second tail-end encapsulation cylinder 13 is provided with a second cable-passing-through component. The second cable-passing-through cable 35 of the docking end b is connected to an external watertight cable through the second cable-passing-through component. The second cable-passing-through component includes a connecting cylinder 16 and a connector 15 located on the second tail-end encapsulation cylinder 13.

[0089] 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 can be plugged into or separated from the docking end a.

[0090] Specifically, the cylindrical support guiding component 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 component 17, the filling and sealing cavity 18, the support frame 19, the flexible elastomer 20, and the first cable-passing-through cable 21.

[0091] During the docking process, the docking end a can extend into the docking end b by a certain axial distance L.

[0092] The docking end a and the first tail-end encapsulation cylinder 12 are radially sealed using a 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 through radial bolts 23, as Figure 6 shown.

[0093] The transition sealing component 17 is located within 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-filled cavity 57. A first cable-passing-through component is provided at the position corresponding to the filling and sealing cavity 18 of the first tail-end encapsulation cylinder 12. The first cable-passing-through cable 21 of the docking end a passes through the transition sealing component 17 for sealing and then is connected to an external watertight cable through the first cable-passing-through component.

[0094] The transition sealing component 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 provided on one side of the step inside the through-hole. The pressing block 30 is used to press-fit the sealing elastomer 29 onto the step. Glue 31 is filled between the steps inside the through-hole and on the other side of the step. The first cable-passing-through cable 21 passes through the pressing block 30, the sealing elastomer 29, and the glue 31.

[0095] The inner wall of the through hole filled with glue 31 has a shrinking section, and the shrinking direction is from the pressing block 30 to the glue 31 .

[0096] The left end of the first tail end packaging tube 12 is a square protrusion 24, and a cylindrical filling sealing cavity 18 is opened in the square protrusion 24. A transition sealing assembly 17 is fixedly installed on the right side of the cylindrical filling sealing cavity 18 through a radial sealing ring 25 and a bolt 26. The function of the transition sealing assembly 17 is to seal and isolate the left and right cavities of the first tail end packaging tube 12. In this example, the left cavity is the filling sealing cavity 18, and the right cavity is the oil-filled cavity 57. Under the flexible compensation action of the oil-filled cable 58, the pressure of the right cavity can change with the change of the underwater environmental pressure. The left filling sealing cavity 18 is a dry cabin, and can also be glue-injected and sealed (in a high pressure difference environment) or gel-filled (in a low pressure difference environment) after the first cabin penetration cable 21 is connected and assembled; the first cabin penetration cable 21 passes out in a sealed manner through the transition sealing assembly 17. The first cabin penetration cable 21 can be an electrical cable or an optical cable, or an optoelectronic composite cable. In this example, it is an optoelectronic composite cable.

[0097] The transition seal assembly 17 includes an electric core 28 located in a flange 27 , and the first penetration cable 21 is connected to the electric core 28 .

[0098] Specifically, such as Figure 4 As shown, the transition sealing assembly 17 includes an insulating polymer flange 27 , a battery cell 28 , a sealing elastomer 29 , a pressing block 30 and epoxy resin glue 31 .

[0099] The insulating polymer flange 27 and the battery core 28 are integrally molded and packaged by molding or pouring, 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 realizing electrical conduction between the two cavities under sealed conditions.

[0100] The sealing elastomer 29 is installed in the insulating polymer flange 27 at the inner hole with the same diameter as the inner hole of the insulating polymer flange 27. The sealing elastomer 29 has a through hole with a size similar to the diameter of the optical fiber in the first cabin cable 21. The optical fiber in the first cabin cable 21 passes through the through hole in the sealing elastomer 29. The external thread of the pressure 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 pressure 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 cable 21. After the seal is formed, the epoxy resin glue 31 is filled to seal the first cabin cable 21. 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 circular 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 fills the sealed cavity 18 is connected to the connector 14 through the upper circular 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.

[0101] The butt end b and the second tail end packaging tube 13 are radially sealed by a sealing ring 32, and the two are fixed together by radial bolts 33. The right end of the second tail end packaging tube 13 is provided with a circular flange, which is fixedly connected to the second cylindrical support 10 by bolts 34. The upper right side of the second tail end packaging tube 13 is provided with a circular through hole, an O-ring mounting groove and a flange mounting threaded hole, and is sealed and fixedly connected to the connecting tube 16. The connecting tube 16 and the connector 15 are sealed and fixedly connected by a radial sealing ring. The second cabin penetration cable 35 output from the tail end of the butt end b is connected to the connector 15 through the circular through hole on the upper right side of the second tail end packaging tube 13 and the connecting tube 16, and is output through the watertight cable connected to the outside of the connector 15; an elastomer 20 is provided between the cylindrical support guide assembly and the drive assembly. Specifically, a flexible elastomer 20 is clamped between the flange at the right tail end of the second tail end packaging tube 13 and the flange of the connecting member 5, and is fixedly connected by bolts 36. The function of the flexible elastomer 20 is to provide flexible connection and force transmission when there is axial position deviation and angular deviation between the driving component I and the cylindrical support guide component II, thereby ensuring smooth docking and separation of the docking ends a and b in the cylindrical support guide component II.

[0102] Three semi-circular holes in the first cylindrical support 9 and the second cylindrical support 10 are slidably supported and installed by three guide shafts 11 arranged circumferentially and evenly. The guide shafts 11 are fixedly installed on the support frame 19 through bolts 37 and 38. The purpose and advantages of adopting this 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 a high centering accuracy, and the repetitive plugging and unplugging operations between the docking end a and the docking end b can be realized.

[0103] 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 the linear magnetic force coupling method. The precise measurement of the plugging and unplugging force of the connector is realized by using static sealing. In the complex environment of high pressure in the deep sea, this method has high application value.

[0104] The linear magnetic force coupling sensing component III is Figure 1 the underwater tensile and compressive force detection component shown in the figure.

[0105] An axial coupling force between the magnetic poles is formed between the inner magnetic pole component 40 and the outer magnetic pole component 41 in the axial direction. Through calculation and analysis, the tensile and compressive force that can be borne by the magnetic pole dimensions, the number of magnetic rings, and the magnetic ring arrangement form in this embodiment is ≮600N. A flange is opened at the end of the inner core shaft 60 in the outer magnetic pole component 41. A circular through hole, an O-ring sealing groove, and an installation flange threaded hole are opened on the left side of the square protrusion 24. The flange of the inner core shaft 60 in the outer magnetic pole component 41 is hermetically and fixedly connected to the left side of the square protrusion 24 through the sealing ring 50; the cylindrical support and guidance component II transfers the axial force to the inner magnetic pole component 40 and the tensile and compressive force sensor 43 fixedly connected thereto in a magnetic force coupling manner through the outer magnetic pole component 41, realizing the non-contact transfer of the plugging and unplugging force.

[0106] The video monitoring component IV is used to monitor the plugging or separating 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 video of the connector during the docking and separating processes. Combining the measured plugging and unplugging force data, comprehensively analyze the reliability and stability of the connector during repetitive plugging and unplugging, especially when the cumulative number of plugging and unplugging times is higher than 100 times, and conduct refined analysis based on the problems that occur to accelerate the iterative optimization of the connector. Such as Figure 2As 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.

[0107] The support frames 6, 19, and 48 are all fixedly installed on the test platform base 57 through bolts.

[0108] 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 underwater tensile and compressive force detection component to receive the pressure signals output by the underwater tensile and compressive force 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.

[0109] Therefore, the platform device in this embodiment uses a deep-sea motor drive, cylindrical support and guidance, etc. to achieve the repeatable and precise docking and separation of the underwater connector. At the same time, by using a static seal-fixed tensile and compressive force sensor and adopting a linear magnetic coupling method, it realizes the 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, deep-sea lighting, cameras and other devices, which can perform real-time through-hull output of measurement data such as optical and electrical function indicators and insertion and extraction forces, and conduct real-time monitoring of the entire process of the test, which is conducive to the overall test and analysis of the working performance of the underwater connector in a high-pressure environment.

[0110] 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 tensile and compressive force detection component, characterized in that Comprising: A pressure-resistant cylinder (39), which is sealed by a sealed end cover (46); An inner magnetic pole assembly (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), one end of the tensile and compressive force sensor (43) is installed on the sensor support (44), and the other end of the tensile and compressive force sensor (43) is connected to the inner magnetic pole assembly (40); An outer magnetic pole assembly (41), 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) has a force-receiving end; The underwater tensile and compressive force detection assembly is located in an underwater connector pressure environment dynamic plugging and unplugging test platform device, and the underwater connector pressure environment dynamic plugging and unplugging test platform device includes a cylindrical support and guiding assembly, and the cylindrical support and guiding assembly 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 inside 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 inside 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 component, and the second cable-passing-through cable (35) of the docking end b is connected to an external watertight cable through the second cable-passing-through component; A transition sealing assembly (17), located inside the first tail-end encapsulation cylinder (12), used to divide the first tail-end encapsulation cylinder (12) into a filling and sealing cavity (18) and an oil-filled cavity (57), a first cable-passing-through 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 cable (21) of the docking end a is hermetically sealed through the transition sealing assembly (17) and then connected to an external watertight cable through the first cable-passing-through component; The underwater tensile and compressive force detection assembly is connected to the first tail-end encapsulation cylinder (12) for detecting the force received by the docking end a.

2. The underwater tensile and compressive force detection component 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 cylindrical support members for mounting the magnetic rings, and the polarities of two adjacent magnetic rings are opposite.

3. The underwater tensile and compressive force detection component according to claim 1, characterized in that, The tensile and compressive force sensor (43) is located on the axis of the pressure-resistant cylinder (39).

4. The underwater tensile and compressive force detection component according to claim 1, characterized in that, The detection assembly includes an inner core shaft (60), the outer magnetic pole assembly (41) is mounted on the inner core shaft (60), and the inner core shaft (60) has a stress-receiving end.

5. The underwater tensile and compressive force detection component according to claim 1, characterized in that, The pressure-resistant cylinder includes an outer cylinder. 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.

6. The underwater tensile and compressive force detection assembly according to claim 1, wherein 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).

7. The underwater tensile and compressive force detection component according to any one of claims 1-6, 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 portion, the first end of the inner cylinder is a closed end, and 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.

8. The underwater tensile and compressive force detection component according to claim 7, characterized in that, 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 magnet.

9. The underwater tensile and compressive force detection component according to claim 7, characterized in that, There is a gap between the inner magnetic pole assembly (40) and the connecting portion, and an elastic pad (45) is provided between the sealing end cover (46) and the sensor support member (44).

10. The underwater tensile and compressive force detection component according to claim 7, characterized in that, The detection assembly includes a connecting support frame (59). The connecting support frame (59) includes a cylindrical portion and a mounting portion located outside the cylindrical wall of the cylindrical portion. The mounting portion is mounted on the inner magnetic pole assembly (40), the other end of the tensile and compressive force sensor (43) is mounted on the bottom of the barrel of the cylindrical portion, and 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.

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