Underwater resistance adjusting assembly, towed linear array and detection equipment

Abstract

The invention relates to an underwater resistance adjusting assembly, a towed linear array and detection equipment. The underwater resistance adjusting assembly comprises a shell part, an adjusting wing and a driving part. The shell part comprises a containing cavity, a first end and a second end, wherein the first end and the second end are oppositely arranged in the axial direction. The adjusting wing comprises a free end and a pivoting end; the pivoting end is arranged at the second end, so that the adjusting wing is pivotally connected with the shell part; the driving part is arranged in the accommodating cavity; the driving part is connected with the adjusting wing so as to drive the adjusting wing to rotate around the pivoting end and change the distance between the free end and the shell part; the adjusting wing comprises a working state and a folded state; when the adjusting wing is in the working state, the free end is far away from the shell part; and when in the folded state, the free end is close to the shell part and is close to the first end compared with the pivoting end.

Description

Technical Field

[0001] The present application relates to the field of underwater detection equipment, and in particular to an underwater resistance adjustment component, a towed linear array and a detection device. Background Art

[0002] At present, countries around the world are vigorously developing underwater detection equipment. Underwater detection equipment can be used to detect moving objects, such as organisms and human activities, and can therefore be widely used in scientific research and rescue activities. The underwater detection equipment is connected to a towed linear array. Multiple detection elements are arranged on the towed linear array to detect the sound waves generated by the water flow, thereby detecting targets.

[0003] Most of the towed linear arrays currently designed are thin linear arrays. During the deployment process of the towed linear array, due to the thin diameter of the array line, it may be difficult to generate enough flow resistance after entering the water to pull the subsequent towed linear array, thus affecting the speed of the entire deployment.

[0004] After the towed linear array is completely submerged in the water, too little tension on the towed linear array will also lead to an unstable wake of the towed linear array, which will cause the tail to swing and generate towing vibration noise during the towing process. This large-scale flow noise is one of the main reasons that affect the underwater detection performance of the towed linear array and must be suppressed.

[0005] In addition, the larger number of detection elements will also greatly increase the length of the towed array. When an array of hundreds of meters long is towed underwater, if the towed array is distorted, it will affect beam forming and even make it impossible to detect the target. Summary of the invention

[0006] The present application provides an underwater resistance adjustment component, a towed linear array and a detection device to solve some or all of the deficiencies in the related art.

[0007] The first aspect of the present application provides an underwater resistance adjustment component, comprising: The housing portion comprises a receiving cavity and a first end and a second end which are arranged opposite to each other in the axial direction; an adjusting wing, comprising a free end and a pivot end; the pivot end is arranged at the second end so that the adjusting wing is pivotally connected to the housing portion; and, A driving part is arranged in the accommodating cavity; the driving part is connected to the adjusting wing to drive the adjusting wing to rotate around the pivot end and change the distance between the free end and the housing part; The regulating wing includes a working state and a stowed state: When in the working state, the free end is away from the housing portion; When in the retracted state, the free end is close to the housing portion and closer to the first end than the pivot end.

[0008] Further, the driving part includes a linear motor and a connecting rod that moves along the axial direction; one end of the connecting rod is pivotally connected to the linear motor, and the other end is pivotally connected to the position of the adjusting wing close to the pivot end; wherein the pivot position of the connecting rod and the adjusting wing is closer to the free end than the pivot position of the adjusting wing and the shell part.

[0009] Further, the linear motor includes a motor body and a driving rod; the housing portion includes an avoidance groove; the connecting rod connects the driving rod and the connecting rod through the avoidance groove; Among them, the shell part includes a sealing member arranged in the accommodating cavity; the sealing member divides the accommodating cavity into a sealing cavity and a driving cavity distributed along the axial direction; the motor body is arranged in the sealing cavity; the driving rod is arranged in the driving cavity and is electrically connected to the motor body through the sealing member; the avoidance groove is connected to the driving cavity.

[0010] Further, the regulating wing comprises a connecting plate arranged at the pivot end; the connecting plate is arranged on a side of the regulating wing facing the housing and extends toward the housing portion; the connecting rod and the housing portion are pivotally connected to the connecting plate respectively; When the regulating wing is in a retracted state, the connecting plate is accommodated in the avoidance groove.

[0011] Furthermore, the number of the adjusting wings includes a plurality; the number of the driving parts corresponds one-to-one to the number of the adjusting wings, so that the plurality of adjusting wings can be in different states.

[0012] Furthermore, the regulating wing is configured to be arc-shaped; when the regulating wing is in a retracted state, the free end and the pivot end of the regulating wing are closer to the housing portion than the middle position.

[0013] Furthermore, in the direction from the first end to the second end, the outer circumferential dimension of at least part of the shell portion becomes larger; a protrusion is provided on the free end of the adjustment wing toward the side of the shell portion; when the adjustment wing is in a folded state, the protrusion is in contact with the shell portion.

[0014] Furthermore, in the direction from the free end to the pivot end, the width of the adjusting wing increases first and then decreases.

[0015] A second aspect of the present application provides a towed linear array, comprising a cable, a detection element, and the underwater resistance adjustment assembly described in the aforementioned embodiment; the cable comprises an interface end and an end arranged opposite to each other; the detection element is arranged between the interface end and the end and is electrically connected to the cable; the end is connected to the first end so that the cable provides electrical energy to the driving part.

[0016] A third aspect of the present application provides a detection device, comprising a power supply and the towed linear array described in the aforementioned embodiment; the interface end is electrically connected to the power supply.

[0017] The technical solution provided by the embodiments of the present application may have the following beneficial effects: It can be seen from the above embodiments that the underwater resistance adjustment assembly involved in the present application has a simple structure, a wide range of applications, a small size, and is easy to store. When assembled in a towed linear array, the underwater resistance adjustment assembly can increase the flow resistance and reduce the swing amplitude of the end. When the towed linear array is distorted, the underwater resistance adjustment assembly can actively adjust the formation posture by controlling the opening and closing of the adjustment wings, quickly restore the straight formation, and improve the detection accuracy of the towed linear array.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 An overall schematic diagram of an embodiment of an underwater resistance adjustment assembly of the present application is shown, wherein the underwater resistance adjustment assembly is in a retracted state; Figure 2 Shown is an overall schematic diagram of another embodiment of the underwater resistance adjustment component of the present application, wherein the underwater resistance adjustment component is in a working state; Figure 3 A simplified schematic diagram of one embodiment of a towed line array of the present application is shown; Figure 4 Shown as Figure 1 A side schematic diagram of the embodiment shown, wherein the underwater resistance adjustment assembly is in operation; Figure 5 Shown as Figure 4 A schematic cross-sectional view of the AA section shown; Figure 6Shown is an overall schematic diagram of an embodiment of a second housing of an underwater resistance adjustment assembly of the present application; Figure 7 An overall schematic diagram of an embodiment of a linear motor of an underwater resistance adjustment assembly of the present application is shown; Figure 8 An overall schematic diagram of an embodiment of an adjustment wing of an underwater resistance adjustment assembly of the present application is shown; Fig. 9 The figure shows an overall schematic diagram of an embodiment of a connecting seat of an underwater resistance adjustment assembly of the present application; Fig.10 Shown is an overall schematic diagram of an embodiment of a connecting rod of an underwater resistance adjustment assembly of the present application.

[0021] Description of reference numerals: 100 underwater resistance adjustment component, 1 shell part, 11 accommodating chamber, 111 sealing chamber, 112 driving chamber, 12 first end, 13 second end, 14 avoidance groove, 15 sealing member, 16 first shell, 17 second shell, 171 flow structure, 172 first assembly hole, 173 lifting ring assembly hole, 18 transition protection part, 19 cable plug sleeve, 2 adjustment wing, 21 free end, 22 pivot end, 23 connecting plate, 24 protrusion, 25 shell pivot hole, 26 connecting rod pivot hole, 3 driving part, 31 linear motor, 311 motor body, 312 driving rod, 32 connecting rod, 321 body part, 322 extension part, 323 connecting hole, 324 accommodating space, 4 lifting ring, 5 connecting seat, 51 base, 52 second assembly hole, 53 protrusion, 54 clamping space, 55 wing plate connecting hole, 200 towing linear array, 210 cable, 211 interface end, 212 end, 220 detection element, Z axis direction. DETAILED DESCRIPTION

[0022] Here, the technical solutions in the embodiments (or "implementation methods") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0023] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0024] refer to Figures 1 to 5 , the present application provides an underwater resistance adjustment component 100. The underwater resistance adjustment component 100 includes a shell body 1, an adjustment wing 2 and a driving part 3. The shell body 1 includes a containing cavity 11 and a first end 12 and a second end 13 arranged opposite to each other along the axial direction Z. The adjustment wing 2 includes a free end 21 and a pivot end 22. The pivot end 22 is arranged at the second end 13 so that the adjustment wing 2 is pivotally connected to the shell body 1. The driving part 3 is arranged in the containing cavity 11. The driving part 3 is connected to the adjustment wing 2 to drive the adjustment wing 2 to rotate around the pivot end 22 and change the distance between the free end 21 and the shell body 1. Among them, the adjustment wing 2 includes a working state and a retracted state: like Figure 1 As shown, when the regulating wing 2 is in the retracted state, the free end 21 is close to the housing portion 1 and is closer to the first end 12 than the pivot end 22; Figure 2 As shown, when the regulating wing 2 is in the working state, the free end 21 is away from the housing part 1 .

[0025] The underwater resistance adjustment assembly 100 is connected to the cable 210 and the detection element 220 to form the towed linear array 200 of the present application. The cable 210 can be an armored cable, thereby improving the overall strength of the cable 210. The cable 210 includes an interface end 211 and an end 212 that are arranged opposite to each other. The detection element 220 is arranged between the interface end 211 and the end 212 and is electrically connected to the cable 210. The end 212 is connected to the first end 12 so that the cable 210 provides electrical energy to the driving part 3. When the towed linear array 200 is assembled in the detection equipment, the interface end 211 is connected to the power supply of the detection equipment, thereby realizing the overall power-on of the towed linear array 200.

[0026] When the regulating wings 2 are in the retracted state, the underwater resistance regulating assembly 100 is more compact and convenient to store. At the same time, it can also prevent the opened regulating wings 2 from being damaged by external forces during storage. When the towed linear array 200 is deployed on the water surface, the underwater resistance regulating assembly 100 in the retracted state is first put into the water. Then the regulating wings 2 are controlled to switch to the working state. At this time, due to the angle between the regulating wings 2 and the axial direction Z, the underwater resistance of the underwater resistance regulating assembly 100 can be increased (the direction of the water flow is as shown in FIG. 2 ). Figure 3 As shown by the blue arrow, the pulling force required for the towed linear array 200 to enter the water is provided, thereby achieving efficient arrangement of the towed linear array 200.

[0027] After the entire towed linear array 200 enters the water, the resistance generated by the regulating wings 2 in the working state under water can also reduce the swing of the end 212 of the cable 210. During the driving process of the detection device, the towed linear array 200 maintains a posture close to a straight line, and the posture of the towed linear array 200 is optimized, thereby reducing the flow noise in a large scale range, thereby improving the detection accuracy of the towed linear array 200 and the detection device.

[0028] In addition, since the towed linear array 200 is linearly distributed and the underwater resistance adjustment assembly 100 is arranged at the end 212 of the cable 210, one underwater resistance adjustment assembly 100 can realize the overall posture adjustment of the towed linear array 200. Compared with the solution of arranging multiple posture adjustment members between the interface end 211 and the end 212 of the cable 210, the arrangement of the underwater resistance adjustment assembly 100 of the present application can effectively reduce the overall cost and weight of the towed linear array 200, and is also conducive to using the space of the cable 210 to assemble more detection elements 220, thereby improving the detection accuracy of the towed linear array 200.

[0029] Figure 3 The number of detection elements 220 shown should be taken as an example rather than a limitation, and the present application does not limit the specific detection function of the detection element 220. The functions that can be detected by multiple detection elements 220 can be the same or different. The underwater resistance adjustment component 100 of the present application can be used to be provided with any number of towed linear arrays 200 without the need for adaptive improvement of the number or form of the detection elements 220 of the towed linear arrays 200. The detection element 220 can also be used to detect the posture of the cable, thereby sending an adjustment signal to the drive unit 3 according to the posture of the cable to control the opening and closing of the adjustment wing 2.

[0030] The driving part 3 can be configured to enable the adjusting wing 2 to have only a folded state and only a working state, that is, the driving part 3 is only used to drive the adjusting wing 2 to have a minimum angle with the shell 1 and to drive the adjusting wing 2 to have a maximum angle with the shell 1.

[0031] Optionally, the driving unit 3 can also be configured to be able to adjust the adjusting wing 2 between a working state and a folded state, that is, there can be multiple angles between the adjusting wing 2 and the shell part 1, so that the underwater resistance adjustment component 100 can generate different levels of underwater resistance under different water flow speeds and different adjustment conditions.

[0032] The driving unit 3 can drive the adjusting wings 2 at the same time, so that all the adjusting wings 2 are in the retracted state, or all the adjusting wings 2 are in the working state. Optionally, the number of driving units 3 corresponds to the number of adjusting wings 2 one by one, so that the multiple adjusting wings 2 can be in different states. In other words, the multiple adjusting wings 2 of the underwater resistance adjustment assembly 100 of this embodiment can be partially in the working state and partially in the retracted state. In this way, when the formation of the towed linear array 200 is distorted, the underwater resistance adjustment assembly 100 can generate different deflection forces, thereby achieving the purpose of quickly restoring the posture of the towed linear array 200.

[0033] The number of the regulating wings 2 of the underwater resistance regulating assembly 100 shown in the drawings is four, so that the posture adjustment of the towed linear array 200 can be quickly responded to. However, in other embodiments, the number of the uniformly distributed regulating wings 2 can also be two, three, or five, etc. This application is not limited to this.

[0034] refer to Figures 4 to 7 The driving part 3 includes a linear motor 31 moving along the axial direction Z and a connecting rod 32. One end of the connecting rod 32 is pivotally connected to the linear motor 31, and the other end is pivotally connected to the position of the adjusting wing 2 near the pivot end 22. The pivot position of the connecting rod 32 and the adjusting wing 2 is closer to the free end 21 than the pivot position of the adjusting wing 2 and the housing part 1. Take the case where the adjusting wing 2 needs to be switched from the working state to the retracted state as an example: The linear motor 31 drives the connecting rod 32 to move toward the first end 12 along the axial direction Z, so that the connecting rod 32 drives the adjusting wing 2 to move toward the first end 12. Since the position where the connecting rod 32 is connected to the adjusting wing 2 is far away from the pivot end 22, the movement of the connecting rod 32 along the axial direction Z toward the first end 12 drives the adjusting wing 2 to pivot around the pivot end 22, thereby achieving the closing of the adjusting wing 2.

[0035] The cooperation between the linear motor 31 and the connecting rod 32 changes the linear movement of the linear motor 31 into the rotational movement of the regulating wing 2. Therefore, the linear motor 31 can utilize the space of the towing linear array 200 that extends along the axial Z line as a whole to reduce the radial size of the underwater resistance adjusting component 100, thereby avoiding that the underwater resistance adjusting component 100 body that is too large will also generate a large flow resistance when the underwater resistance adjusting component 100 is not needed to work.

[0036] The housing 1 includes an avoidance groove 14 connected to the driving chamber 112, so that the connecting rod 32 can connect the driving rod 312 and the connecting rod 32 through the avoidance groove 14. The driving part 3 is arranged in the accommodating chamber 11, so the housing 1 needs to achieve a certain sealing to prevent the connecting rod 32 from causing liquid to enter the accommodating chamber 11 and damage components during the movement of the avoidance groove 14.

[0037] Optionally, the housing portion 1 includes a seal 15 disposed in the accommodating chamber 11. The seal 15 divides the accommodating chamber 11 into a seal chamber 111 and a drive chamber 112 distributed along the axial direction Z. The linear motor 31 includes a motor body 311 and a drive rod 312. The motor body 311 is disposed in the seal chamber 111. The drive rod 312 is disposed in the drive chamber 112 and is electrically connected to the motor body 311 through the seal 15. The avoidance groove 14 is connected to the drive chamber 112. The setting of the avoidance groove 14 allows the housing portion 1 to allow liquid to enter the drive chamber 112. The setting of the seal 15 enables the housing portion 1 to protect the motor body 311 that needs to be water-isolated. Compared with the solution of setting the seal 15 in the avoidance groove 14, the movement of the connecting rod 32 in the axial direction Z of this embodiment is not hindered by the seal 15, which is conducive to reducing the structural strength requirements of the connecting rod 32 and the smoothness of movement, thereby improving the speed of the pivoting reaction of the regulating wing 2.

[0038] It can be seen that the driving direction of the linear motor 31 is along the axial direction Z, so the matching arrangement of the linear motor 31 and the connecting rod 32 enables the seal 15 to divide the accommodating chamber 11 into a sealing chamber 111 and a driving chamber 112 along the axial direction Z. Compared with the solution in which the motor directly drives the adjusting wing 2 to pivot, the structure of the underwater resistance adjusting assembly 100 of the present application is simpler, and the protection performance of the motor body 311 is also better.

[0039] The housing portion 1 may include a first housing 16 and a second housing 17 arranged along the axial direction Z. The sealing chamber 111 is arranged in the first housing 16, and the driving chamber 112 is arranged in the second housing 17. The sealing member 15 is arranged in the sealing chamber 111 and is sealedly connected to the inner wall of the first housing 16, and then the first housing 16 and the second housing 17 are connected to realize the assembly of the housing portion 1. This arrangement is conducive to the processing of the first housing 16 and the second housing 17 and the assembly of the housing portion 1. The second housing 17 may also be provided with a circulation structure 171, so that the fluid entering the driving chamber 112 from the avoidance groove 14 can leave the driving chamber 112 from the circulation structure 171, or the fluid entering the driving chamber 112 from the circulation structure 171 can leave the driving chamber 112 from the avoidance groove 14. That is, the circulation structure 171 and the avoidance groove 14 enable the liquid to form a circulation in the driving chamber 112. Therefore, when the regulating wing 2 switches between the working state and the retracted state underwater, the fluid in the driving chamber 112 can quickly leave the driving chamber 112 , or the external fluid can quickly enter the driving chamber 112 .

[0040] Optionally, the second housing 17 is configured as a cone, and the outer circumference gradually decreases in the direction from the first end 12 to the second end 13. In this way, the second end 13 of the housing portion 1 is smaller in size to prevent the driving portion 3 from interfering with the housing portion 1 when driving the adjustment wing 2 to close, and there is no need to set an additional avoidance position to allow the adjustment wing 2 to fit the housing portion 1 as closely as possible.

[0041] Combination Figure 8 Optionally, the regulating wing 2 includes a connecting plate 23 arranged at the pivot end 22. The connecting plate 23 is arranged on the side of the regulating wing 2 facing the housing and extends toward the housing portion 1. The connecting rod 32 and the housing portion 1 are pivotally connected to the connecting plate 23 respectively. When the regulating wing 2 is in the retracted state, the connecting plate 23 is accommodated in the avoidance groove 14. The extension direction of the connecting plate 23 is different from that of the regulating wing 2, so the setting of the connecting plate 23 can serve as a reinforcing rib structure to strengthen the strength of the regulating wing 2. At the same time, when the regulating wing 2 is in the working state, the free end 21 is away from one side of the housing portion 1, so the water flow exerts a force on the free end 21 along the direction of the water flow. This force forms a bending moment on the regulating wing 2 at the pivot end 22. It can be seen that the connecting plate 23 is arranged at the pivot end 22, which can improve the strength of the regulating wing 2 at the pivot end 22 to resist the bending moment, and avoid the regulating wing 2 at the pivot end 22. The bending force caused by the force bending of the regulating wing 2 at the pivot end 22 causes the failure of the resistance adjustment, and even further causes the fracture of the regulating wing 2. In addition, the avoidance groove 14 can not only be used to avoid the movement of the connecting rod 32, but also can be used to accommodate the connecting plate 23 protruding from the adjusting wing 2 toward the side of the housing 1. Therefore, when the adjusting wing 2 is in the retracted state, the adjusting wing 2 can keep in contact with the housing 1 as much as possible, which is conducive to improving the structural compactness of the underwater resistance adjustment assembly 100.

[0042] Furthermore, the regulating wing 2 and the housing portion 1 may be connected via a connecting plate 23. Figure 8 As shown, the connecting plate 23 is provided with a housing pivot hole 25 on one side close to the pivot end 22 of the adjusting wing 2. The housing pivot hole 25 is pivotally connected to the housing portion 1. The adjusting wing 2 can be directly connected to the housing portion 1, but can also be connected by Fig. 9 Connect with the connecting socket 5 shown. Figure 6 , Figure 7 as well as Figure 8, the second shell 17 includes a first assembly hole 172. The base 51 of the connecting seat 5 is provided with a second assembly hole 52. The base 51 is connected to the second shell 17 by arranging fasteners in the second assembly hole 52 and the first assembly hole 172. A protrusion 53 is protrudingly provided on the side of the base 51 away from the second shell 17. The protrusion 53 is provided with a wing plate connecting hole 55323. The adjusting wing 2 is pivotally connected to the shell part 1 by arranging fasteners in the shell pivot hole 25 and the wing plate connecting hole 55323. The setting of the connecting seat 5 can make the shell part 1 and the adjusting wing 2 have a certain distance in the axial Z direction, so that the opening and closing angle of the adjusting wing 2 can be increased as much as possible, thereby improving the resistance that the underwater resistance adjustment assembly 100 can generate.

[0043] Furthermore, two protrusions 53 are provided, and a clamping space 54 of the connection seat 5 is formed between the two protrusions 53. The connection plate 23 is provided in the clamping space 54, and is connected to the connection seat 5 through the wing plate connection holes 55323 on both sides. The provision of the clamping space 54 can limit the translational movement of the regulating wing 2 in the direction of its rotation axis, which is conducive to improving the structural stability of the underwater resistance adjustment assembly 100.

[0044] Similar to the connection seat 5, the connection between the connecting rod 32 and the adjusting wing 2 can also be carried out in a manner of "clamping" the connecting plate 23. Figure 8 and Fig.10 , the connecting plate 23 includes a connecting rod pivot hole arranged away from the pivot end 22 relative to the housing pivot hole 25. The connecting rod 32 includes a main body 321 and an extension 322 extending from the main body 321. The extension 322 is provided with a connecting hole 323. The adjusting wing 2 is pivotally connected to the connecting rod 32 by arranging fasteners in the connecting rod pivot hole and the connecting hole 323. Similarly, the connecting rod 32 is provided with two extensions 322 spaced apart along the axis of the connecting hole 323, and a receiving space 324 for the connecting rod 32 is formed between the two extensions 322. The connecting plate 23 is arranged in the receiving space 324, and then pivotally connected to the connecting rod 32 through the connecting holes 323 on both sides. This arrangement can also improve the structural strength of the connecting rod 32 and the adjusting wing 2.

[0045] The other end of the connecting rod 32 is connected to the linear motor 31, and may also be provided with two extension portions 322. This application will not elaborate on this.

[0046] return Figures 2 to 5In some optional embodiments, the regulating wing 2 is configured to be arc-shaped. When the regulating wing 2 is in the retracted state, the free end 21 and the pivot end 22 of the regulating wing 2 are closer to the housing portion 1 than the middle position. Compared with the flat regulating wing 2, the arc-shaped regulating wing 2 has a larger area, so the regulating wing 2 in the working state can generate greater resistance underwater, which is conducive to quickly generating the desired resistance value and realizing the deployment and posture adjustment of the towed linear array 200. When the arc-shaped regulating wing 2 is in the retracted state, the arc-shaped regulating wing 2 enables the underwater resistance adjustment component 100 to form a streamlined outer surface, which is conducive to reducing the unexpected resistance generated underwater and avoiding the water resistance from generating excessive force at the pivot end of the regulating wing 2, causing damage to the underwater resistance adjustment component 100.

[0047] Furthermore, in the direction from the first end 12 to the second end 13, the outer circumferential size of the housing portion 1 first increases and then decreases, so as to adapt to the shape of the arc-shaped regulating wing 2 in the retracted state. Taking the embodiment shown in the accompanying drawings as an example, since the first housing 16 and the second housing 17 need to accommodate the driving unit 3, their sizes in the radial direction are larger. A cable socket 19 is provided on the side of the first housing 16 facing the first end 12, which is used to realize the electrical connection between the cable 210 and the driving unit 3. The outer diameter of the cable socket 19 is smaller than that of the first housing 16. When the regulating wing 2 is in the retracted state, the free end 21 is arranged close to the cable socket 19.

[0048] The housing portion 1 may further include a transition protection portion 18 having a radial dimension smaller than that of the first housing portion 16, which is sleeved on the outside of the cable plug sleeve 19. The transition protection portion 18 is connected to the side of the first housing portion 16 facing the first end 12, and is used to improve the strength of the connection position between the cable 210 and the housing portion 1. In this way, in the direction from the first end 12 to the second end 13, the outer diameters of the cable plug sleeve 19, the transition protection portion 18 and the first housing portion 16 gradually increase. In the embodiment where the second housing portion 17 is a conical housing, the outer diameter of the housing portion 1 gradually decreases in the direction toward the second end 13. When the regulating wing 2 is in the retracted state, the regulating wing 2 as a whole can fit the housing portion 1, which is beneficial to improving the structural compactness and structural strength of the underwater resistance adjustment assembly 100.

[0049] In this embodiment, the free end 21 may be disposed close to the cable socket, thereby increasing the length of the adjusting wing 2, thereby enabling the adjusting wing 2 to generate greater resistance. Alternatively, the free end 21 may be disposed close to the transition protection portion 18, thereby reducing the gap between the housing portion 1 and the free end 21, thereby preventing the free end 21 from being damaged by force when the underwater resistance adjusting assembly 100 is stored, and also preventing water from entering between the housing portion 1 and the adjusting wing 2 through the gap during underwater use, thereby applying a force to the pivot end 22 that causes the adjusting wing 2 to open.

[0050] Optionally, a protrusion is provided on the free end 21 of the adjusting wing 2 facing the housing 1. When the adjusting wing 2 is in the retracted state, the protrusion fits the housing 1. By providing the protrusion, the distance between the free end 21 of the adjusting wing 2 and the housing 1 of the underwater resistance adjusting assembly 100 is further reduced, which is conducive to preventing a large amount of water flowing between the adjusting wing 2 and the housing 1 from impacting the adjusting wing 2. At the same time, the reduction of the gap can also reduce the movable distance of the free end 21 toward the housing 1, thereby reducing the problem of possible damage to the adjusting wing 2.

[0051] Optionally, in the direction from the free end 21 to the pivot end 22, the width of the adjusting wing 2 first increases and then decreases. Since the adjusting wing 2 is arranged in an arc shape, when in the retracted state, the outer diameter of the adjusting wing 2 at the free end 21 and the outer diameter at the pivot end 22 are smaller than the outer diameter of the middle part. At this time, if the width of the adjusting wing 2 is uniform, there is a gap between the adjusting wing 2 and the adjusting wing 2. This embodiment not only improves the strength of the adjusting wing 2 by increasing the width of the middle position of the adjusting wing 2, but also reasonably utilizes the space between the adjusting wing 2 and the adjusting wing 2. In addition, the increase in the width of the adjusting wing 2 can increase the force-bearing area of ​​the adjusting wing 2 when in the working state, increase the resistance that can be generated, and help the towing linear array 200 to quickly adjust the posture.

[0052] When the detection device does not need to use the towed linear array 200, the towed linear array 200 can be wound and retracted. At this time, the regulating wing 2 can be in a retracted state to avoid excessive occupation of space. In some embodiments, the underwater resistance adjustment component 100 also includes a lifting ring 4 provided at the second end 13. The lifting ring 4 can be used to connect with the hook to fix the wound towed linear array 200 to avoid looseness. Alternatively, when the underwater resistance adjustment component 100 is not connected to the cable 210, the lifting ring 4 can also allow the underwater resistance adjustment component 100 to be hung on a wall or the like to achieve reasonable storage.

[0053] The lifting ring 4 can be directly welded to the housing 1. Figure 6 As shown, the housing 1 is provided with a lifting ring assembly hole 173 at the second end 13. The lifting ring 4 and the lifting ring assembly hole 173 are connected by, for example, threaded connection. A gasket, thread sealant, etc. may be provided between the lifting ring 4 and the housing 1 to absorb tolerance and improve connection strength.

[0054] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. An underwater resistance adjustment component, characterized in that: include: The housing portion comprises a receiving cavity and a first end and a second end which are arranged opposite to each other in the axial direction; an adjusting wing including a free end and a pivoting end; The pivot end is disposed at the second end so that the regulating wing is pivotally connected to the housing portion; and, A driving part is arranged in the accommodating cavity; the driving part is connected to the adjusting wing to drive the adjusting wing to rotate around the pivot end and change the distance between the free end and the housing part; The regulating wing includes a working state and a stowed state: When in the working state, the free end is away from the housing portion; When in the retracted state, the free end is close to the housing portion and closer to the first end than the pivot end.

2. The underwater resistance adjustment assembly according to claim 1, characterized in that: The driving part includes a linear motor moving along the axial direction and a connecting rod; one end of the connecting rod is pivotally connected to the linear motor, and the other end is pivotally connected to a position of the adjusting wing close to the pivot end; wherein the pivot position of the connecting rod and the adjusting wing is closer to the free end than the pivot position of the adjusting wing and the shell part.

3. The underwater resistance adjustment assembly according to claim 2, characterized in that: The linear motor comprises a motor body and a driving rod; the housing comprises an escape groove; the connecting rod connects the driving rod and the connecting rod through the escape groove; Among them, the shell part includes a sealing member arranged in the accommodating cavity; the sealing member divides the accommodating cavity into a sealing cavity and a driving cavity distributed along the axial direction; the motor body is arranged in the sealing cavity; the driving rod is arranged in the driving cavity and is electrically connected to the motor body through the sealing member; the avoidance groove is connected to the driving cavity.

4. The underwater resistance adjustment assembly according to claim 3, characterized in that: The regulating wing comprises a connecting plate arranged at a pivot end; the connecting plate is arranged on a side of the regulating wing facing the housing and extends toward the housing portion; the connecting rod and the housing portion are respectively pivotally connected to the connecting plate; When the regulating wing is in a retracted state, the connecting plate is accommodated in the avoidance groove.

5. The underwater resistance adjustment assembly according to claim 2, characterized in that: The number of the adjusting wings includes a plurality; the number of the driving parts corresponds to the number of the adjusting wings one by one, so that the plurality of adjusting wings can be in different states.

6. The underwater resistance adjustment assembly according to claim 1, characterized in that: The regulating wing is configured to be arc-shaped; when the regulating wing is in a retracted state, the free end and the pivot end of the regulating wing are closer to the housing portion than the middle position.

7. The underwater resistance adjustment assembly according to claim 6, characterized in that: In the direction from the first end to the second end, the outer circumferential dimension of at least part of the shell portion becomes larger; a protrusion is provided on the free end of the adjustment wing toward the side of the shell portion; when the adjustment wing is in a folded state, the protrusion is in contact with the shell portion.

8. The underwater resistance adjustment assembly according to any one of claim 6, characterized in that: In the direction from the free end to the pivot end, the width of the adjusting wing increases first and then decreases.

9. A towed linear array, characterized in that: It comprises a cable, a detection element and an underwater resistance adjustment assembly as described in any one of claims 1 to 7; the cable comprises an interface end and an end arranged opposite to each other; the detection element is arranged between the interface end and the end and is electrically connected to the cable; the end is connected to the first end so that the cable can provide electrical energy to the driving part.

10. A detection device, characterized in that: It comprises a power source and the towed line array as claimed in claim 9; the interface end is electrically connected to the power source.

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