An underwater adjustable expander

Abstract

The present invention belongs to the technical field of underwater acoustic detection, and specifically relates to an underwater adjustable unfolder. The underwater adjustable unfolder comprises a shell, a bottom winch, a tail winch and a floating body. A cable is wound on the bottom winch. A hook anchor is connected to the free end of the cable. An optical cable is wound on the tail winch. The free end of the optical cable is connected to an optical fiber hydrophone array. The floating body is located in the shell. The shell has a working cabin for accommodating the bottom winch and the tail winch. The working cabin is located in the middle and rear part of the shell. A battery cabin for powering the underwater adjustable unfolder is arranged at the head end of the shell. A cable outlet for the free end of the optical cable to extend is arranged at the tail end of the shell. A cable outlet for the cable to pass through is arranged at the bottom of the shell. The device uses the bottom winch to drive the anchor hook by retracting and releasing the cable, and uses the tail winch to drive the optical fiber hydrophone array by retracting and releasing the optical cable, thereby realizing active adjustment of the posture of the optical fiber hydrophone array and ensuring the stability of the optical fiber hydrophone array in a horizontal posture.

Description

Technical Field

[0001] The invention relates to the technical field of underwater acoustic detection, and in particular to an underwater adjustable spreader. Background Art

[0002] Fiber optic hydrophone is a sensor that detects underwater acoustic signals. It uses highly sensitive optical coherence detection to convert underwater acoustic vibrations into optical signals, which are then transmitted to the signal processing system through optical fiber cables, and then the acoustic signals are extracted to detect underwater targets. Fiber optic hydrophones are used for underwater acoustic target monitoring and have been maturely applied. However, in waters with large current fluctuations, it is difficult for fiber optic hydrophones to maintain a horizontal posture in the water, making it difficult to effectively maximize the capture of acoustic targets.

[0003] At present, when monitoring underwater acoustic targets, fiber optic hydrophones are usually laid underwater with the help of an underwater driven deployer. The underwater driven deployer includes a propeller, a pressure-resistant cylinder, a buoyancy adjustment system, a tension sensor, an optoelectronic slip ring, a glass bead buoyancy block, an umbrella-shaped retraction device, and a battery pack. When working, the deployer moves forward against the current, pulling the fiber optic hydrophone array, and a current sail is hung at the end of the fiber optic hydrophone array. The current sail will rotate with the direction of the ocean current to obtain the maximum frontal area and frontal resistance, so that the hydrophone array can be fully deployed in the water.

[0004] However, the above scheme only relies on the automatic adjustment of water flow to maintain the horizontal posture of the fiber optic hydrophone array. When the water flow in the detection water area fluctuates greatly, the horizontal posture of the fiber optic hydrophone array will be destroyed, and there is no emergency measure for human intervention to achieve the horizontal posture.

[0005] In addition, when the above-mentioned unfolder is working, the flow resistance of water to the umbrella surface is relatively large, the propeller is in a load state for a long time, and the noise generated will also interfere with the entire system's monitoring of the environment and target noise.

[0006] In summary, in the process of underwater deployment of fiber optic hydrophones, how to design a deployment device to actively adjust the posture of the fiber optic hydrophone array and maintain the horizontal posture of the fiber optic hydrophone array, so as to make the fiber optic hydrophone suitable for acoustic target monitoring in complex waters, has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0007] The purpose of the present invention is to provide a deployment device for the underwater deployment of fiber optic hydrophones, so as to actively adjust the posture of the fiber optic hydrophone array and maintain the horizontal posture of the fiber optic hydrophone array, thereby making the fiber optic hydrophone suitable for acoustic target monitoring in complex waters.

[0008] To achieve the above object, the present invention adopts the following scheme: an underwater adjustable deployer is proposed, comprising a shell, a bottom winch, a stern winch and a floating body providing positive buoyancy, a cable is wound on the bottom winch, a hook anchor is connected to the free end of the cable, an optical cable is wound on the stern winch, the free end of the optical cable is connected to the optical fiber hydrophone array, and the floating body is located in the shell;

[0009] The shell has a working cabin for accommodating the bottom winch and the stern winch, the working cabin is located in the middle and rear part of the shell, the head end of the shell is provided with a battery cabin for powering the underwater adjustable unfolder, the tail end of the shell is provided with a cable outlet for the free end of the optical cable to extend out, and the bottom of the shell is provided with a cable outlet for the cable to pass through;

[0010] The bottom winch drives the anchor hook by retracting and releasing the cable to adjust the depth of the deployer under water, and the tail winch drives the fiber optic hydrophone array by retracting and releasing the optical cable to adjust the posture of the fiber optic hydrophone array.

[0011] Preferably, a horizontally arranged partition is provided inside the working cabin, the partition is connected to the inner wall of the working cabin, and the working cabin is divided into an upper cabin body and a lower cabin body along the axis of the shell, the drum of the bottom winch is located in the upper cabin body, and the drum of the tail winch is located in the lower cabin body. With such an arrangement, the bottom winch and the tail winch are arranged in a staggered manner, which is conducive to maintaining the self-balance of the working cabin in the depth direction, avoiding the situation where the deployer flips along its own axis, and further facilitating the stability of the posture of the hydrophone array towed by the tail end of the deployer.

[0012] Preferably, the center of gravity of the bottom winch is located on the center of gravity axis of the underwater adjustable unfolder, and the weight of the tail winch is equal to the weight of the battery compartment. Such an arrangement is conducive to maintaining the balance of both ends of the unfolder.

[0013] Preferably, the winch at the tail end of the array includes a motor, a drum, a transmission mechanism, a first mounting seat, and a cable arrangement mechanism that slides along the axial direction of the drum as the drum rotates. A pair of first mounting seats are arranged in parallel on the partition, the drum is located between the pair of first mounting seats, the end of the drum is connected to the first mounting seat, the output shaft of the motor is connected to the active end of the drum, the driven end of the drum is connected to the power end of the cable arrangement mechanism through the transmission mechanism, and the outlet of the cable arrangement mechanism is opposite to the cable arrangement port. In this way, the cable arrangement mechanism is used to turn the optical cable released by the drum and guide it to the cable arrangement port of the shell, reducing the swing of the optical cable during the reeling and releasing process. The cable arrangement mechanism slides along the axial direction of the drum as the drum rotates, which is conducive to the orderly arrangement of the optical cable on the drum during the reeling process.

[0014] Preferably, the cable arrangement mechanism includes a second mounting seat, a guide wheel, a driving screw, a guide rod and a bracket, a pair of second mounting seats are arranged in parallel on the partition, the driving screw and the guide rod are both located between the pair of second mounting seats, the end of the driving screw is connected to the second mounting seat, the axis of the driving screw is parallel to the axis of the drum, the end of the guide rod is connected to the second mounting seat, the axis of the guide rod is parallel to the axis of the driving screw, the power end of the driving screw is connected to the driven end of the drum through a transmission mechanism, the bracket is connected to the ball screw through a screw nut, a slide groove for the guide rod to pass through is provided on the bracket, the guide rod is embedded in the slide groove, and the guide wheel is connected to the bracket. In this arrangement, the driving force of the motor is transmitted to the driving screw through the drum via the transmission mechanism, and the rotation of the driving screw drives the bracket to slide along the axial direction of the drum, so that the cable arrangement mechanism and the drum share a motor, thereby optimizing the power structure.

[0015] Preferably, the transmission mechanism includes a driving pulley, a driven pulley and a transmission belt, the driving pulley is connected to the driven end of the drum, the driven pulley is connected to the power end of the driving screw, and the driving pulley is connected to the driven pulley through a transmission chain.

[0016] Preferably, the optical cable is wound in a spiral shape along the axis of the drum, and a fiber slip ring is connected to the fixed end of the optical cable, and the stator of the fiber slip ring is connected to the frame of the winch at the end of the array. In this way, the fiber slip ring is used to ensure that the optical cable normally transmits optical signals when the winch at the end of the array rotates, ensure that the optical cable does not rotate relatively and break, and increase the load of the optical cable to withstand axial tension.

[0017] Preferably, the optical cable is wound in a spiral line with equal pitch, and the pitch is equal to the diameter of the optical cable. Such an arrangement facilitates the optical cable to be closely arranged on the reel.

[0018] As a preferred embodiment, the cable is a Kevlar cable, and the free end of the Kevlar cable is connected to the hook anchor. This arrangement further improves the wear resistance and tensile strength of the cable.

[0019] Preferably, the Kevlar rope is wound in a spiral shape along the axis of the drum, and the fixed end of the Kevlar rope is pressed on the innermost side. In this way, the fixed end of the Kevlar rope is pressed against the side wall of the drum by its own winding structure, which is conducive to the bottom winch completely releasing the cable when the deployer is recovered, and the fixed end of the Kevlar rope can be naturally separated from the drum, without adding a device for cutting the cable on the bottom winch, further optimizing the structure of the bottom winch.

[0020] Compared with the prior art, the underwater adjustable unfolder provided by the present invention has the following outstanding substantial features and significant progress: the underwater adjustable unfolder utilizes a bottom winch to drive the anchor hook by retracting and releasing the cable, thereby realizing depth adjustment, and utilizes a tail winch to drive the fiber optic hydrophone array by retracting and releasing the optical cable, thereby realizing active adjustment of the posture of the fiber optic hydrophone array, ensuring the stability of the fiber optic hydrophone array in the horizontal posture, making the fiber optic hydrophone suitable for acoustic target monitoring in complex waters, and at the same time, when the bottom winch and the tail winch stop working, the unfolder is in a silent state and does not generate any noise, thereby reducing the influence of the noise generated by the equipment itself on the fiber optic hydrophone array, and effectively improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a simplified structural diagram of an underwater adjustable spreader in an embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of an underwater adjustable spreader in an embodiment of the present invention;

[0023] Figure 3 yes Figure 2 The main view;

[0024] Figure 4 It is a schematic diagram of the internal structure of an underwater adjustable spreader in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the winch at the tail of the array;

[0026] Figure 6 yes Figure 4 Schematic diagram of the three-dimensional structure of the tail winch in the middle array from another perspective;

[0027] Figure 7 This is the manual control flow chart of the winch at the tail end of the array;

[0028] Figure 8 It is a schematic diagram of the working process of an underwater adjustable spreader in an embodiment of the present invention.

[0029] Figure numerals: 1. Shell; 2. Battery compartment; 3. Hook anchor; 4. Optical cable; 5. Bottom winch; 6. Tail winch; 7. Partition; 8. Cable outlet; 9. Cable outlet; 61. Motor; 62. Drum; 63. Transmission mechanism; 64. First mounting seat; 65. Second mounting seat; 66. Guide wheel; 67. Drive screw; 68. Guide rod; 69. Bracket; 631. Driving pulley; 632. Driven pulley; 633. Transmission belt. DETAILED DESCRIPTION

[0030] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] like Figure 1-6 An underwater adjustable deployer is shown, which is used to actively adjust the posture of the fiber optic hydrophone array and maintain the horizontal posture of the fiber optic hydrophone array during the underwater deployment of the fiber optic hydrophone. The underwater adjustable deployer uses the bottom winch to drive the anchor hook by retracting and releasing the cable to adjust the depth, and uses the tail winch to drive the fiber optic hydrophone array by retracting and releasing the optical cable, so as to actively adjust the posture of the fiber optic hydrophone array, ensure the stability of the fiber optic hydrophone array in the horizontal posture, and make the fiber optic hydrophone suitable for acoustic target monitoring in complex waters. At the same time, when the bottom winch and the tail winch stop working, the deployer is in a silent state and does not generate any noise, thereby reducing the impact of the noise generated by the equipment itself on the fiber optic hydrophone array, effectively improving work efficiency.

[0032] Example 1

[0033] like Figure 1 As shown, an underwater adjustable deployer comprises a housing 1, a bottom winch 5, a stern winch 6 and a floating body providing positive buoyancy. A cable is wound on the bottom winch 5. A hook anchor 3 is connected to the free end of the cable. An optical cable 4 is wound on the stern winch 6. The free end of the optical cable 4 is connected to the optical fiber hydrophone array. The floating body is located in the housing 1.

[0034] like Figure 2 As shown, the interior of the housing 1 has a working cabin for accommodating a bottom winch 5 and a stern winch 6. The working cabin is located in the middle and rear part of the housing 1. The head end of the housing 1 is provided with a battery compartment 2 for powering the underwater adjustable unfolder. The tail end of the housing 1 is provided with a cable outlet 9 for the free end of the optical cable 4 to extend out. The bottom of the housing 1 is provided with a cable outlet 8 for the cable to pass through.

[0035] The bottom winch 5 drives the anchor hook by retracting and releasing the cable to adjust the depth of the deployer under water. The tail winch 6 drives the fiber optic hydrophone array by retracting and releasing the optical cable 4 to adjust the posture of the fiber optic hydrophone array.

[0036] like Figure 3 Combination Figure 4 As shown, a horizontally arranged partition 7 is provided inside the working cabin. The partition 7 is connected to the inner wall of the working cabin and divides the working cabin into an upper cabin body and a lower cabin body along the axis of the shell 1. The drum 62 of the bottom winch 5 is located in the upper cabin body. The drum 62 of the tail winch 6 is located in the lower cabin body. With such a configuration, the bottom winch 5 and the tail winch 6 form a staggered arrangement, which is conducive to maintaining the self-balance of the working cabin in the depth direction, avoiding the situation where the deployer flips along its own axis, and further facilitating the stability of the posture of the hydrophone array towed by the tail end of the deployer.

[0037] In order to further improve the stability of the underwater adjustable deployer, the center of gravity of the bottom winch 5 is located on the center of gravity axis of the underwater adjustable deployer, and the weight of the tail winch 6 is equal to the weight of the battery compartment 2. Such a setting is conducive to maintaining the balance of both ends of the deployer.

[0038] Among them, Figure 1 As shown, the optical cable 4 is wound in a spiral shape along the axis of the winding drum 62. The fixed end of the optical cable 4 is connected to a fiber slip ring. The stator of the fiber slip ring is connected to the frame of the tail winch 6. In this way, the fiber slip ring is used to ensure that the optical cable 4 transmits the optical signal normally when the tail winch 6 rotates, to ensure that the optical cable 4 does not rotate relative to break, and to increase the load of the optical cable 4 to withstand the axial tension.

[0039] For example, the optical cable 4 is wound in a spiral shape with equal pitch, and the pitch is equal to the diameter of the optical cable 4. This arrangement facilitates the optical cable 4 to be closely arranged on the reel 62.

[0040] The cable is preferably a Kevlar rope. The free end of the Kevlar rope is connected to the hook anchor 3. Such arrangement further improves the wear resistance and tensile strength of the cable.

[0041] The Kevlar rope is wound in a spiral shape along the axis of the drum 62, and the fixed end of the Kevlar rope is pressed on the innermost side. In this way, the fixed end of the Kevlar rope is pressed on the side wall of the drum 62 by its own winding structure, which is conducive to the bottom winch 5 completely releasing the cable when the deployer is recovered, and the fixed end of the Kevlar rope can be naturally separated from the drum 62, without adding a device for cutting the cable on the bottom winch 5, further optimizing the structure of the bottom winch 5.

[0042] like Figure 5 As shown, the winch 6 at the tail end of the array includes a motor 61, a drum 62, a transmission mechanism 63, a first mounting seat 64, and a cable arrangement mechanism that slides along the axial direction of the drum 62 as the drum 62 rotates. A pair of first mounting seats 64 are arranged in parallel on the partition 7. The drum 62 is located between the pair of first mounting seats 64. The end of the drum 62 is connected to the first mounting seat 64. The output shaft of the motor 61 is connected to the active end of the drum 62. The driven end of the drum 62 is connected to the power end of the cable arrangement mechanism through the transmission mechanism 63. The outlet of the cable arrangement mechanism is directly opposite to the cable arrangement port 9. In this way, the cable arrangement mechanism is used to turn the optical cable 4 released by the drum 62 and guide it to the cable arrangement port 9 of the housing 1, reducing the swing of the optical cable 4 during the reeling and releasing process. The cable arrangement mechanism slides along the axial direction of the drum 62 as the drum 62 rotates, which is conducive to the orderly arrangement of the optical cable 4 on the drum 62 during the reeling process.

[0043] like Figure 6As shown, the cable arrangement mechanism includes a second mounting seat 65, a guide wheel 66, a driving screw 67, a guide rod 68 and a bracket 69. A pair of second mounting seats 65 are arranged in parallel on the partition 7. The driving screw 67 and the guide rod 68 are both located between the pair of second mounting seats 65. The end of the driving screw 67 is connected to the second mounting seat 65. The axis of the driving screw 67 is parallel to the axis of the reel 62. The end of the guide rod 68 is connected to the second mounting seat 65. The axis of the guide rod 68 is parallel to the axis of the driving screw 67. The power end of the driving screw 67 is connected to the driven end of the reel 62 through the transmission mechanism 63. The bracket 69 is connected to the ball screw through the screw nut. A slide groove for the guide rod 68 to pass through is provided on the bracket 69. The guide rod 68 is embedded in the slide groove. The guide wheel 66 is connected to the bracket 69. With this arrangement, the driving force of the motor 61 is transmitted to the driving screw 67 through the drum 62 via the transmission mechanism 63. The driving screw 67 rotates to drive the bracket 69 to slide along the axial direction of the drum 62, making it easier for the cable arrangement mechanism and the drum 62 to share a motor 61, thereby optimizing the power structure.

[0044] The transmission mechanism 63 includes a driving pulley 631, a driven pulley 632 and a transmission belt 633. The driving pulley 631 is connected to the driven end of the reel 62. The driven pulley 632 is connected to the power end of the driving screw 67. The driving pulley 631 is connected to the driven pulley 632 through the transmission belt 633.

[0045] The structure of the bottom winch 5 is basically the same as that of the tail winch 6, except that the bottom winch 5 does not need to be provided with an optical fiber slip ring. The frame structures of the bottom winch 5 and the tail winch 6 are both welded with 5A06 aluminum alloy.

[0046] Example 2

[0047] like Figure 1 As shown, the present invention is an underwater adjustable unfolder with a total length of 2.8m, a cross-sectional diameter of 0.55m, and a total weight of about 80kg. The unfolder includes a stern winch, a bottom winch, a battery compartment, a buoy, and a hook anchor. The stern winch and the bottom winch are intended to adopt a structure in which the cable outlet is fixed, that is, both use a cable arrangement mechanism to output optical cables or cables. In order to reduce the influence of the winch movement on the balance of the entire unfolder, the bottom winch is located on the axis of the center of gravity of the unfolder, and the weight of the stern winch is basically balanced with the weight of the battery compartment. Among them, the working sea area water depth of the unfolder is preferably 200m.

[0048] The winch at the tail of the array is mainly composed of a drum assembly, a cable arrangement mechanism, a smooth ring, a mounting base, an electric control cabinet, etc. Its main structure is welded with 5A06 aluminum alloy. The cable outlet is fixed to reduce the swing of the cable at the tail of the array during the retraction and release process. After the hook anchor of the deployer sinks to the bottom, the winch starts to retract the cable until the entire system is trapezoidal. The optical cable uses ROV cable with zero buoyancy, so that the weight of the winch at the tail of the array remains unchanged before and after the optical cable is retracted and released underwater. Since the cable diameter is fixed, in order to simplify the structure, the drum assembly and the cable arrangement mechanism share a motor drive. The structural dimensions of the winch at the tail of the array are about 830mm (length) × 450mm (width) × 300mm (height), and the weight is about 18kg.

[0049] The cable arrangement mechanism includes a transmission mechanism, a screw slider, a cable guide, a frame, etc., to achieve orderly arrangement of the array tail cable on the drum during the cable retraction and release process. The output shaft of the cable arrangement motor is directly connected to the screw shaft through a planetary gear reducer, driving the slider to move linearly. For each rotation of the drum, the slider travel is not less than 10mm (the diameter of the optical cable). Select the screw lead P B =10mm, so the reduction ratio from the drum to the screw is i=1.

[0050] The cable arrangement system adopts the design of driving screw thread pair, the load cable arrangement frame mass m=5kg, and the positive pressure of the cable on the cable arrangement mechanism takes the maximum value F 正 =500N, mechanical efficiency Ƞ=0.85, friction coefficient u=0.1, acceleration time t=0.05s, speed v=4.78mm / s, the thrust that the cable motor needs to provide is:

[0051] F=(mg+F 正 )(u+v / t)=108N

[0052] Therefore, the power required by the motor is:

[0053] P=Fv / Ƞ

[0054] Among them, Ƞ is the mechanical efficiency from the motor to the drum, which is 0.85. After calculation, it can be obtained that P ≥ 0.61 W. Therefore, the drum motor with a power of 300 W is sufficient to drive the drum and the cable arrangement mechanism, and the drum and the cable arrangement mechanism are driven by synchronous belts.

[0055] like Figure 5 As shown in the figure, the main structure of the cable guide is an inclined guide wheel. The optical cable on the drum is turned 90 degrees through the guide wheel and then extends out from the tail of the unwinder. The main purpose is two points: on the one hand, the drum axis can be arranged along the length direction of the unwinder; on the other hand, the cable outgoing direction is always fixed.

[0056] The function of the optical fiber slip ring is to transmit the optical signal normally when the winch at the tail of the array rotates. The optical fiber slip ring can ensure that the optical cable does not rotate relative to each other and break, and can withstand axial tension to a certain extent. The slip ring is installed on the drum shaft of the winch at the tail of the array, the rotor part is connected to the winch shaft, and the stator part is connected through the cabin in a watertight manner. For example, the rotor is fixedly connected to the drum shaft, and the stator is connected to the winch frame at the tail of the array.

[0057] The overall structure of the bottom winch is basically the same as that of the tail winch. Its main structure is also welded with 5A06 aluminum alloy, and the drum assembly and the cable arrangement mechanism share a motor. The bottom winch and the hook anchor are connected by Kevlar rope. The structural dimensions of the bottom winch are about 780mm (length) × 450mm (width) × 300mm (height), and the weight is about 17kg.

[0058] The purpose of cable cutting is to disconnect the hook anchor and the bottom winch when the system is recovered, so that the unwinder floats to the surface for easy recovery. Since the Kevlar rope is not easy to cut, the main motor of the winch drives the drum to release all the ropes. This method requires a small amount of cable winding, no additional mechanism is required, and the winch is small in size. The rope can be wound on the drum and released completely by pressing the rope head.

[0059] The battery compartment mainly houses the deployer battery and the electric control boxes of the two winches. It is a titanium alloy pressure-resistant cabin with a light structure and high strength. The power of the tail winch and the bottom winch is 300W. During the 72h standby time of the system plus the 24h working time, the estimated working time of the two winches is 3h and 2h respectively. The battery pack has a capacity of 1.5kWh, that is, a 24V62.5Ah battery. The battery pack is a customized product with a size of about Ф300mm×100mm and a weight of about 12kg. The size of the electric control part is 240mm×220mm×420mm. Therefore, the size of the pressure-resistant cabin is about Ф350mm×700mm, the weight of the cabin is about: 15kg, and the weight of the entire instrument cabin is estimated to be about: 35kg.

[0060] Glass beads are used as the float, which are mainly used to provide the required buoyancy for the entire deployer. Glass beads are a material widely used to provide buoyancy for marine equipment. They have the advantages of light weight, good chemical stability, low water absorption, and high pressure resistance. The density of glass beads in this scheme is 400kg / m 3 , the compressive strength is not less than 5MPa. According to the working requirements of the deployer, the shape is proposed to be square, which can be tilted down under the action of ocean currents, but will not roll.

[0061] like Figure 7 Combination Figure 8As shown in the figure, the control operations of the bottom winch and the end winch of the array can be achieved through remote control and debugging equipment. Communicate with the host through Ethernet to achieve human-machine interaction, such as parameter setting, real-time status monitoring, control of cable retraction / extension, etc. The remote control communicates with the host through wireless communication equipment. After the system is deployed underwater, the operator monitors the depth values of 9 depth sensors in real time. When the depth difference exceeds 5m, the end winch and the bottom winch of the deployment device are controlled to ensure that the horizontal depth difference of the array does not exceed 5m.

[0062] The present invention is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present invention may also have other implementation manners. For those skilled in the art, any technical solutions formed by making any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An underwater adjustable spreader, It is characterized in that It comprises a shell, a bottom winch, a stern winch and a floating body providing positive buoyancy, wherein a cable is wound on the bottom winch, a hook anchor is connected to the free end of the cable, an optical cable is wound on the stern winch, the free end of the optical cable is connected to the optical fiber hydrophone array, and the floating body is located in the shell; The shell has a working cabin for accommodating the bottom winch and the stern winch, the working cabin is located in the middle and rear part of the shell, the head end of the shell is provided with a battery cabin for powering the underwater adjustable unfolder, the tail end of the shell is provided with a cable outlet for the free end of the optical cable to extend out, and the bottom of the shell is provided with a cable outlet for the cable to pass through; The bottom winch drives the anchor hook by retracting and releasing the cable to adjust the depth of the deployer under water, and the tail winch drives the fiber optic hydrophone array by retracting and releasing the optical cable to adjust the posture of the fiber optic hydrophone array; A horizontally arranged partition is provided inside the working cabin, the partition is connected to the inner wall of the working cabin, and the working cabin is divided into an upper cabin body and a lower cabin body along the axis of the shell, the drum of the bottom winch is located in the upper cabin body, and the drum of the tail winch is located in the lower cabin body; The winch at the tail of the array includes a motor, a drum, a transmission mechanism, a first mounting seat, and a cable arrangement mechanism that slides along the axial direction of the drum as the drum rotates. A pair of first mounting seats are arranged in parallel on the partition, the drum is located between the pair of first mounting seats, the end of the drum is connected to the first mounting seat, the output shaft of the motor is connected to the active end of the drum, the driven end of the drum is connected to the power end of the cable arrangement mechanism through the transmission mechanism, and the outlet of the cable arrangement mechanism is directly opposite to the cable arrangement port; The cable arrangement mechanism includes a second mounting seat, a guide wheel, a driving screw, a guide rod and a bracket. A pair of second mounting seats are arranged in parallel on the partition, and the driving screw and the guide rod are both located between the pair of second mounting seats. The end of the driving screw is connected to the second mounting seat, and the axis of the driving screw is parallel to the axis of the drum. The end of the guide rod is connected to the second mounting seat, and the axis of the guide rod is parallel to the axis of the driving screw. The power end of the driving screw is connected to the driven end of the drum through a transmission mechanism, and the bracket is connected to the ball screw through a screw nut. A sliding groove for the guide rod to pass through is provided on the bracket, and the guide rod is embedded in the sliding groove, and the guide wheel is connected to the bracket.

2. The underwater adjustable spreader according to claim 1, It is characterized in that The center of gravity of the bottom winch is located on the center of gravity axis of the underwater adjustable unfolder, and the weight of the tail winch is equal to the weight of the battery compartment.

3. The underwater adjustable spreader according to claim 1, It is characterized in that The transmission mechanism comprises a driving pulley, a driven pulley and a transmission belt, wherein the driving pulley is connected to the driven end of the drum, the driven pulley is connected to the power end of the driving screw, and the driving pulley is connected to the driven pulley through the transmission belt.

4. The underwater adjustable spreader according to claim 1, It is characterized in that The optical cable is wound in a spiral shape along the axis of the drum, a fixed end of the optical cable is connected with an optical fiber slip ring, and a stator of the optical fiber slip ring is connected to a frame of a winch at the tail end of the array.

5. The underwater adjustable spreader according to claim 4, It is characterized in that The optical cable is wound in a spiral shape with equal pitch, and the pitch is equal to the diameter of the optical cable.

6. The underwater adjustable spreader according to claim 1, It is characterized in that The cable is a Kevlar rope, and the free end of the Kevlar rope is connected to a hook anchor.

7. The underwater adjustable spreader according to claim 6, It is characterized in that The Kevlar rope is wound in a spiral shape along the axis of the drum, and the fixed end of the Kevlar rope is pressed at the innermost side.

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