Submarine cable weak signal enhancement detection device resistant to ocean clutter interference

Abstract

This invention belongs to the technical field of cable detection equipment, specifically a weak signal enhancement and detection device for submarine cables that resists marine clutter interference. It includes a detector and a sensor, as well as an underwater holding mechanism. The sensor is mounted on the underwater holding mechanism, which maintains the sensor's detection accuracy. By setting up the underwater holding mechanism, this invention, on the one hand, uses a streamlined housing to envelop the sensor, providing protection and enhancing stability during movement in seawater. On the other hand, the continuous water jet from the jet nozzle not only repels marine life but also reduces impact intensity and the probability of debris attachment, thus facilitating detection operations.

Description

Technical Field

[0001] This invention belongs to the technical field of cable detection equipment, specifically a weak signal enhancement and detection device for submarine cables that resists marine clutter interference. Background Technology

[0002] Due to the variability of seabed geology, the heterogeneity of sediments, the randomness of marine biological activity, and the changes in landforms caused by ocean currents, the location and direction of submarine cables are prone to change. Therefore, during long-term use, it is necessary to periodically locate submarine cables.

[0003] Submarine clutter interference makes the weak electromagnetic signals emitted by cables easily submerged by complex background noise, making it difficult for traditional detection equipment to accurately capture and identify target signals. This, in turn, affects the accurate judgment of cable location, direction, and operational status, posing a significant challenge to regular positioning and maintenance work. Among existing detection technologies, cable weak magnetic field detection technology based on fluxgate sensors is widely used in submarine cable positioning operations due to its strong suppression of low-frequency magnetic field interference and the high signal-to-noise ratio improvement effect of the signal amplification link.

[0004] However, in actual detection processes, it was found that due to the influence of marine life, plants, and landforms in the seawater, the sensor is prone to collisions when moving underwater, affecting the sensor's detection accuracy and even causing sensor failure in severe cases. A related technology discloses a method for monitoring submarine cable faults, application number CN202510760667X. In this scheme, when the heavier extension plate moves inward during seawater impact, the lower end of the lighter elastic metal strip on the same side moves away from the fixed column. This causes the center of gravity of the sinking block on the side closer to the impact of the water flow to automatically shift to the side away from the impact of the water flow, automatically maintaining balance. Furthermore, the elastic metal strip can maintain balance by transferring gas when it moves. However, due to the lack of avoidance and protection measures for marine life and landforms, the sensor can still become unbalanced and damaged due to collisions and impacts in actual applications.

[0005] In view of this, the present invention proposes a weak signal enhancement and detection device for submarine cables that resists marine clutter interference, in order to solve the above-mentioned technical problems. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a weak signal enhancement and detection device for submarine cables that resists marine clutter interference.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the submarine cable weak signal enhancement detection device for resisting marine clutter interference of the present invention includes a detector and a sensor. The detector is installed on a traction vessel. The detector has a built-in cable detection program. The sensor is located underwater. The detector and the sensor are electrically connected.

[0008] It also includes an underwater holding mechanism, on which the sensor is mounted, and the underwater holding mechanism is used to maintain the detection accuracy of the sensor;

[0009] The underwater holding mechanism includes a streamlined mounting housing, a towing rope, a jet nozzle, and a pumping component;

[0010] The streamlined mounting housing is connected to the towing vessel via a towing rope, and the streamlined mounting housing is fitted over the sensor.

[0011] Multiple jet nozzles are mounted on the streamlined mounting housing. The multiple jet nozzles are distributed at the front end of the streamlined mounting housing. The multiple jet nozzles in the same plane are arranged in an arc shape, and their jet direction is perpendicular to the arc arrangement path.

[0012] The pumping component is installed on the traction vessel and is connected to the jet nozzle via a connecting pipe.

[0013] Preferably, the pumping component includes a mounting bracket, a drive wheel, a pumping housing, and a pumping piston;

[0014] The mounting frame is fixedly installed on the bottom of the traction vessel, the drive wheel is rotatably mounted on the mounting frame, the pump housing is fixedly installed on the mounting frame, and a pumping chamber is opened on the side of the pump housing away from the direction of movement of the traction vessel;

[0015] The pumping piston is slidably installed in the pumping chamber. The pumping piston is connected to the drive wheel through the crankshaft connecting rod. A one-way inlet valve is installed on the pumping housing. The connecting pipe is a one-way flow pipe.

[0016] Preferably, the pump housing is located on both sides of the drive wheel, and the two pump housings are inclined on one side close to each other, and a funnel-shaped channel is formed between the two pump housings, with the largest end of the funnel-shaped channel facing the direction of movement of the traction vessel.

[0017] Preferably, the mounting frame is equipped with a depth maintaining mechanism, which cooperates with the pumping component and the towing rope, and the depth maintaining mechanism is used to maintain the sensor's water immersion depth;

[0018] The depth maintaining mechanism includes a transmission tube, a fixed wheel, and a traction wheel;

[0019] The transmission pipe is fixedly installed on the pump housing, and the transmission pipe is electrically connected to the connecting pipe. The transmission pipe is a spring-type telescopic pipe, and a traction wheel is installed at the output end of the transmission pipe.

[0020] The fixed wheel is mounted on the mounting frame, and multiple fixed wheels and traction wheels are provided. The middle part of the towing rope passes around the fixed wheel and the traction wheel.

[0021] Preferably, an angle test piece is fixedly installed on the mounting frame. The angle test piece is located below the fixed wheel. A test groove is provided on the angle test piece, and an elastic test rod is installed in the test groove. The elastic test rod is located on the rotation path of the drag rope.

[0022] Preferably, a forced adjustment pump is installed on the mounting bracket, the output end of the forced adjustment pump is connected to the transmission pipe, and the forced adjustment pump is electrically connected to the elastic test rod via a program.

[0023] Preferably, a plurality of telescopic rods are installed on the connecting pipe, and a clamp is fixedly installed on the side of the telescopic rod away from the connecting pipe. The clamp is connected to the towing rope, and the telescopic rod is conductively connected to the connecting pipe.

[0024] Preferably, the telescopic rod has a spray hole, and the opening direction of the spray hole is horizontal.

[0025] Preferably, the spray holes on the telescopic rod are horizontally symmetrical, a shielding plate is hinged inside the telescopic rod, a slow-release spring rod is fixedly installed on the telescopic rod, the slow-release spring rod corresponds one-to-one with the spray holes, the output end of the slow-release spring rod is elastically connected to the shielding plate by an elastic rope, a baffle is fixedly installed on the slow-release spring rod, the baffle is located in the spray direction of the spray holes, and the output power of the forced regulating pump fluctuates periodically.

[0026] Preferably, the inner wall of the telescopic rod is inlaid with symmetrically arranged magnetic plates, which are magnetically attracted to the shielding plate. The magnetic attraction force between the magnetic plates and the shielding plate is less than the elastic force of the elastic rope after the spring rod is extended.

[0027] The beneficial effects of this invention are as follows:

[0028] 1. The submarine cable weak signal enhancement detection device for resisting marine clutter interference described in this invention, by setting up an underwater holding mechanism, on the one hand, envelops the sensor in a streamlined mounting shell, which not only provides protection but also makes it more stable when moving in seawater due to its shape advantage. On the other hand, the water jet continuously sprayed by the jet nozzle not only repels marine organisms but also reduces the impact intensity and the probability of debris attachment, thereby providing certain convenience for detection operations.

[0029] 2. The submarine cable weak signal enhancement detection device for resisting marine clutter interference described in this invention automatically adjusts the distance between the end of the towing rope and the traction vessel through a depth maintenance mechanism, thereby effectively reducing the sensor's rise and fall amplitude caused by changes in speed, stabilizing the sensor within a narrow depth range, facilitating accurate calculation and analysis of the detection results, and resulting in more accurate output detection results. Attached Figure Description

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] Figure 1 This is a perspective view of the present invention;

[0032] Figure 2 This is a perspective view of the invention from another angle;

[0033] Figure 3 It is a 3D view of the streamlined mounting housing;

[0034] Figure 4 It is an assembly 3D view of the mounting bracket and some of its components;

[0035] Figure 5 It is a three-dimensional view of the assembly of the drive wheel, crankshaft connecting rod, and pump piston;

[0036] Figure 6 It is a 3D view of the assembly of the transmission tube, the fixed wheel, and the traction wheel;

[0037] Figure 7 This is a diagram of the internal structure of the angle test piece;

[0038] Figure 8 This is a sectional view of the telescopic pole;

[0039] In the diagram: 1. Towing vessel; 2. Streamlined mounting housing; 21. Towing rope; 22. Jet nozzle; 23. Mounting frame; 24. Pump housing; 25. Pumping chamber; 26. Pumping piston; 27. Crankshaft connecting rod; 28. One-way inlet valve; 29. ​​Connecting pipe; 3. Transmission pipe; 31. Fixed wheel; 32. Towing wheel; 33. Drive wheel; 4. Angle test piece; 41. Test groove; 42. Elasticity test rod; 43. Forced adjustment pump; 5. Telescopic rod; 51. Clamp; 52. Injection hole; 53. Shielding plate; 54. Slow-release spring rod; 55. Elastic rope; 56. Baffle; 57. Magnetic plate. Detailed Implementation

[0040] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0041] like Figures 1 to 8 As shown, the submarine cable weak signal enhancement and detection device for resisting marine clutter interference of the present invention includes a detector and a sensor. The detector is installed on the traction vessel 1. The detector has a built-in cable detection program. The sensor is located underwater. The detector is electrically connected to the sensor. The cable detection program includes a data acquisition card, digital analysis software and a control program. The sensor converts the detected magnetic signal into an analog electrical signal proportionally. For further processing and analysis, the continuous electrical signal is converted into a digital discrete signal by the data acquisition card. The discrete signal is then sent to the data processing software for analysis and processing.

[0042] It also includes an underwater holding mechanism, on which the sensor is mounted, and the underwater holding mechanism is used to maintain the detection accuracy of the sensor;

[0043] The underwater holding mechanism includes a streamlined mounting housing 2, a towing rope 21, a jet nozzle 22, and a pumping component;

[0044] The streamlined mounting housing 2 is connected to the towing vessel 1 via a towing rope 21, and the streamlined mounting housing 2 is fitted over the sensor.

[0045] Multiple jet nozzles 22 are mounted on the streamlined mounting housing 2. The multiple jet nozzles 22 are distributed at the front end of the streamlined mounting housing 2. The multiple jet nozzles 22 in the same plane are arranged in an arc shape, and their jet direction is perpendicular to the arc arrangement path.

[0046] The pumping component is installed on the tractor 1, and the pumping component is connected to the jet nozzle 22 through the connecting pipe 29.

[0047] In order to maintain the stable operation of the sensor underwater and reduce the impact of marine organisms and other factors on the stability of the sensor when performing fluxgate sensing detection on cables, an underwater holding mechanism is provided in this invention. The streamlined mounting housing 2 provides external protection and the impact of the water jet from the jet nozzle 22 reduces the probability of the sensor being hit or impacted. Even if the sensor is hit by an unavoidable impact during motion detection, the buffering effect of the water jet impact and the blocking effect of the streamlined mounting housing 2 can reduce the degree of sensor collision damage.

[0048] Specifically, in this invention, the detector is installed on the towing vessel 1. It receives and processes magnetic signals, and calculates and maps parameters such as the cable's location and depth based on the detection data. The detector also has a pre-installed control program. During the detection process, the streamlined mounting housing 2, installed at the end of the towing rope 21, is placed underwater. Under gravity, the streamlined mounting housing 2 and the sensor sink underwater. Then, the towing vessel 1 is started and sails along a pre-planned route on the sea surface. During this journey, the towing vessel 1 pulls the streamlined mounting housing 2 and the sensor along the towing rope 21, thereby detecting the cable signal along the pre-planned route. During this process, the pumping unit... Always in operation, the pumping unit draws seawater and pumps it through the connecting pipe 29 to the jet nozzle 22. Finally, the seawater is sprayed through the jet nozzle 22 onto the outside of the streamlined mounting shell 2. The jet of water helps to disperse and impact marine life in advance, especially effective in repelling marine life and also has a certain pushing effect on marine plants. This reduces the chance of the streamlined mounting shell 2 colliding with marine life. In the event of an unavoidable impact, the continuous jet of water from the jet nozzle 22 also acts as a buffer, reducing the impact intensity. At the same time, the continuous jet of water can also effectively reduce the chance of marine plants becoming entangled or attached to the streamlined mounting shell 2.

[0049] This invention, by setting up an underwater holding mechanism, on the one hand, uses a streamlined mounting shell 2 to envelop the sensor, which not only provides protection but also makes it more stable when moving in seawater due to its shape advantage. On the other hand, the water jet continuously sprayed by the jet nozzle 22 not only repels marine life but also reduces the impact intensity and the probability of debris attachment, thus providing certain convenience for detection operations.

[0050] In a preferred embodiment of the present invention, the pumping component includes a mounting bracket 23, a drive wheel 33, a pumping housing 24, and a pumping piston 26;

[0051] The mounting frame 23 is fixedly mounted on the bottom of the traction vessel 1, the drive wheel 33 is rotatably mounted on the mounting frame 23, the pump housing 24 is fixedly mounted on the mounting frame 23, and the pump housing 24 has a pumping chamber 25 on the side away from the direction of movement of the traction vessel 1.

[0052] The pumping piston 26 is slidably installed in the pumping chamber 25. The pumping piston 26 is connected to the drive wheel 33 through the crankshaft connecting rod 27. A one-way liquid inlet valve 28 is installed on the pumping housing 24. The connecting pipe 29 is a one-way flow pipe.

[0053] The pump housing 24 is located on both sides of the drive wheel 33. The two pump housings 24 are inclined on one side close to each other, and a horn-shaped channel is formed between the two pump housings 24. The largest end of the horn-shaped channel opening faces the direction of movement of the traction vessel 1.

[0054] During the navigation of the tractor vessel 1, the drive wheel 33 moves relative to the seawater. Under the guidance of the funnel-shaped channel formed by the two pump housings 24, the seawater causes the drive wheel 33 to rotate on the mounting bracket 23. The drive wheel 33 drives the pumping piston 26 to reciprocate linearly within the pumping chamber 25 via the crankshaft connecting rod 27. This causes the pumping chamber 25 to periodically draw seawater through the one-way inlet valve 28. It should be noted that the inlet end of the one-way inlet valve 28 is equipped with a filter structure for filtering the seawater. The drawn seawater is finally pumped to the continuous... In the through pipe 29 and the jet nozzle 22, since the relative speed between the seawater and the drive wheel 33 is positively correlated with the speed of the tractor 1, the faster the tractor 1 travels, the faster the seawater is pumped into the jet nozzle 22, the stronger the impact force of the water column ejected by the jet nozzle 22, and the larger the impact range of the water column in the seawater. Therefore, when the speed of the tractor 1 changes, the effective range of the underwater holding mechanism can be adaptively adjusted, reducing the probability of collision between the streamlined installation shell 2 and marine organisms while reducing the impact on the marine environment.

[0055] In a preferred embodiment of the present invention, a depth maintaining mechanism is installed on the mounting frame 23. The depth maintaining mechanism cooperates with the pumping component and the towing rope 21. The depth maintaining mechanism is used to maintain the water immersion depth of the sensor.

[0056] The depth maintaining mechanism includes a transmission tube 3, a fixed wheel 31, and a traction wheel 32;

[0057] The transmission pipe 3 is fixedly installed on the pump housing 24. The transmission pipe 3 is connected to the connecting pipe 29. The transmission pipe 3 is a spring-type telescopic pipe. The output end of the transmission pipe 3 is equipped with a traction wheel 32.

[0058] The fixed wheel 31 is mounted on the mounting frame 23. Multiple fixed wheels 31 and multiple traction wheels 32 are provided. The middle part of the towing rope 21 passes around the fixed wheel 31 and the traction wheel 32.

[0059] Because the depth of the sensor in seawater plays a crucial role in the analysis and calculation of the detection data during the sensor detection process, in order to maintain the stability of the sensor's depth in seawater, in this invention, when the speed of the traction vessel 1 changes, the depth maintenance mechanism is activated to interfere with the sensor's depth, thereby reducing the amplitude of the sensor's depth change in seawater. This, combined with the sensor's positioning, provides certain convenience for the accuracy of the detection results. Specifically, when the speed of the traction vessel 1 changes, the angle of the towing rope 21 will change due to seawater resistance, causing the streamlined mounting housing 2 with the sensor to tend to float or submerge. To mitigate this tendency, in this invention, when the speed of the traction vessel 1 changes, the rate at which the pump delivers seawater to the connecting pipe 29 changes, thus changing the water pressure intensity in the connecting pipe 29. This change is proportional to the speed change. Therefore, the transmission pipe 3 is connected to the connecting pipe 29, causing the water pressure to be transmitted to the transmission pipe 3. Under the action of water pressure, the transmission pipe 3, made of a spring-loaded telescopic tube, generates… The expansion and contraction of the transmission tube 3 directly pushes the traction wheel 32 closer to or further away from the fixed wheel 31. This causes a change in the folded length of the towing rope 21, which passes through the fixed wheel 31 and the traction wheel 32. In other words, the distance between the end of the towing rope 21 and the traction vessel 1 changes. When the speed of the traction vessel 1 increases, the angle at which the towing rope 21 deviates from the vertical increases, and the distance between the end of the towing rope 21 and the traction vessel 1 lengthens, thus reducing the upward buoyancy of the streamlined mounting housing 2. Conversely, when the speed of the traction vessel 1 decreases, the angle at which the towing rope 21 deviates from the vertical decreases, and the distance between the end of the towing rope 21 and the traction vessel 1 shortens, thus reducing the downward descent of the streamlined mounting housing 2. The depth-maintaining mechanism automatically adjusts the distance between the end of the towing rope 21 and the traction vessel 1, effectively reducing the sensor's rise and fall caused by speed changes. This keeps the sensor stable within a narrower depth range, facilitating accurate calculation and analysis of the detection results and resulting in more accurate output results.

[0060] In a preferred embodiment of the present invention, an angle test piece 4 is fixedly installed on the mounting bracket 23. The angle test piece 4 is located below the fixed wheel 31. A test groove 41 is provided on the angle test piece 4. An elastic test rod 42 is installed in the test groove 41. The elastic test rod 42 is located on the rotation path of the drag rope 21.

[0061] A forced adjustment pump 43 is installed on the mounting bracket 23. The output end of the forced adjustment pump 43 is connected to the transmission pipe 3. The forced adjustment pump 43 is electrically connected to the elastic test rod 42 via a program.

[0062] Because the deflection angle of the tow rope 21 changes regularly during speed variations, the presence of marine life on the streamlined mounting shell 2 or the tow rope 21 increases drag, causing a significant difference in deflection angle compared to the current speed. Therefore, during actual detection, the deflection angle of the tow rope 21 is measured in real-time using the elastic testing rod 42. Under a pre-set program, the actual deflection angle is compared with the deflection angle corresponding to the current speed. When a difference exists... When there is a significant difference, the forced regulating pump 43 is activated by a pre-set program. The forced regulating pump 43 actively pumps seawater into the transmission pipe 3. On the one hand, the actively pumped seawater increases the extension range of the transmission pipe 3, thereby increasing the distance between the end of the towing rope 21 and the traction vessel 1, thus reducing the sensor's buoyancy. On the other hand, the increased water pressure in the transmission pipe 3 increases the impact intensity of the water jet in the jet nozzle 22. When marine organisms are attached to the streamlined mounting housing 2, the increased impact force can increase the probability of the marine organisms falling off.

[0063] It is important to know that, compared to the resistance of the streamlined mounting housing 2 moving in seawater, the reverse impact force generated by the jet water is small. Therefore, the jet water will only cause a slight change in the deflection angle of the towing rope 21.

[0064] In a preferred embodiment of the present invention, a plurality of telescopic rods 5 are installed on the connecting pipe 29. A clamp 51 is fixedly installed on the side of the telescopic rod 5 away from the connecting pipe 29. The clamp 51 is sleeved and connected to the drag rope 21. The telescopic rod 5 is electrically connected to the connecting pipe 29.

[0065] The telescopic rod 5 is provided with a spray hole 52, and the opening direction of the spray hole 52 is horizontal.

[0066] The spray holes 52 on the telescopic rod 5 are horizontally symmetrical. A shielding plate 53 is hinged inside the telescopic rod 5. A slow-release spring rod 54 is fixedly installed on the telescopic rod 5. The slow-release spring rod 54 corresponds one-to-one with the spray holes 52. The output end of the slow-release spring rod 54 is elastically connected to the shielding plate 53 through an elastic rope 55. A baffle 56 is fixedly installed on the slow-release spring rod 54. The baffle 56 is located in the spray direction of the spray holes 52. The output power of the forced regulating pump 43 fluctuates periodically.

[0067] The inner wall of the telescopic rod 5 is inlaid with symmetrically arranged magnetic suction plates 57. The magnetic suction plates 57 are magnetically attracted to the shielding plate 53. The magnetic attraction force between the magnetic suction plates 57 and the shielding plate 53 is less than the elastic force of the elastic rope 55 after the slow-release spring rod 54 is extended. With the help of water flow, when the water flow impact forces the slow-release spring rod 54 to extend, the resultant force of water pressure and magnetic attraction force is greater than the tension of the elastic rope 55. The elastic rope 55 cannot immediately pull the shielding plate 53 to move. When the water flow decreases, as the pressure of water on the shielding plate 53 decreases, the magnetic attraction force of the magnetic suction plates 57 is less than the tension of the elastic rope 55, causing the shielding plate 53 to deflect and expose the spray hole 52 on the other side.

[0068] To further reduce the obstruction of the device's movement by marine organisms, in this invention, the connecting pipe 29 and the towing rope 21 are connected by a telescopic rod 5 and a clamp 51. Initially, the distance between the two sides is small. As the water pressure inside the connecting pipe 29 increases, the distance between them increases. Under the obstruction of seawater, the connecting pipe 29 and the towing rope 21 are arranged back and forth along the direction of movement. When the forced regulating pump 43 is started, the water pressure inside the connecting pipe 29 further increases. During this process, some seawater in the connecting pipe 29 enters the telescopic rod 5 and, guided by the shielding plate 53, flows into the spray hole 52 on one side, and is finally sprayed out through the spray hole 52. The unilateral spray will cause a change in the force on the connecting pipe 29, causing the connecting pipe 29 to swing during movement. The forced regulating pump 43 changes its power periodically after startup, causing the water pressure inside the telescopic rod 5 to change periodically. During the water jetting process, the water jet impacts the baffle 56, causing the release spring rod 54 to extend and the elastic rope 55 to tighten. When the water pressure inside the telescopic rod 5 decreases and the water jet impact force decreases, the elastic rope 55 forces the baffle plate 53 to change position after the water pressure is lost. Then, during the next increase in the power of the forced regulating pump 43, the water jet is ejected from the jet hole 52 on the other side. During use, the water jets are alternately ejected through the jet holes 52 on both sides, which increases the swaying efficiency of the connecting pipe 29 during its forward movement, thereby reducing the probability of marine organisms attaching by swaying.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A submarine cable weak signal enhancement and detection device resistant to marine clutter interference, comprising a detector and a sensor, wherein the detector is installed on a traction vessel (1), the detector has a built-in cable detection program, the sensor is located underwater, and the detector is electrically connected to the sensor; Its features are: It also includes an underwater holding mechanism, on which the sensor is mounted, and the underwater holding mechanism is used to maintain the detection accuracy of the sensor; The underwater holding mechanism includes a streamlined mounting housing (2), a towing rope (21), a jet nozzle (22), and a pumping component; The streamlined mounting housing (2) is connected to the towing vessel (1) via a towing rope (21), and the streamlined mounting housing (2) is fitted over the outside of the sensor; Multiple jet nozzles (22) are installed on the streamlined mounting housing (2). The multiple jet nozzles (22) are distributed at the front end of the streamlined mounting housing (2). The multiple jet nozzles (22) in the same plane are arranged in an arc shape, and their jet direction is perpendicular to the arc arrangement path. The pumping component is installed on the traction vessel (1) and is connected to the jet nozzle (22) via a connecting pipe (29).

2. The submarine cable weak signal enhancement and detection device against marine clutter interference according to claim 1, characterized in that: The pumping component includes a mounting bracket (23), a drive wheel (33), a pumping housing (24), and a pumping piston (26). The mounting bracket (23) is fixedly installed on the bottom of the traction vessel (1), the drive wheel (33) is rotatably installed on the mounting bracket (23), the pump housing (24) is fixedly installed on the mounting bracket (23), and the pump housing (24) has a pumping chamber (25) on the side away from the direction of movement of the traction vessel (1). The pumping piston (26) is sealed and slidably installed in the pumping chamber (25). The pumping piston (26) is connected to the drive wheel (33) through the crankshaft connecting rod (27). A one-way liquid inlet valve (28) is installed on the pumping housing (24). The connecting pipe (29) is a one-way flow pipe.

3. The submarine cable weak signal enhancement and detection device against marine clutter interference according to claim 2, characterized in that: The pump housing (24) is located on both sides of the drive wheel (33). The two pump housings (24) are inclined on one side close to each other, and a horn-shaped channel is formed between the two pump housings (24). The largest end of the horn-shaped channel faces the direction of movement of the traction vessel (1).

4. The submarine cable weak signal enhancement and detection device against marine clutter interference according to claim 2, characterized in that: A depth maintenance mechanism is installed on the mounting bracket (23). The depth maintenance mechanism cooperates with the pumping component and the towing rope (21). The depth maintenance mechanism is used to maintain the water depth of the sensor. The depth maintaining mechanism includes a transmission tube (3), a fixed wheel (31), and a traction wheel (32). The transmission pipe (3) is fixedly installed on the pump housing (24). The transmission pipe (3) is connected to the connecting pipe (29). The transmission pipe (3) is a spring-type telescopic pipe. The output end of the transmission pipe (3) is equipped with a traction wheel (32). The fixed wheel (31) is mounted on the mounting frame (23). Multiple fixed wheels (31) and multiple traction wheels (32) are provided. The middle part of the drag rope (21) passes around the fixed wheel (31) and the traction wheel (32).

5. The submarine cable weak signal enhancement and detection device against marine clutter interference according to claim 4, characterized in that: An angle test piece (4) is fixedly installed on the mounting bracket (23). The angle test piece (4) is located below the fixed wheel (31). A test groove (41) is opened on the angle test piece (4). An elastic test rod (42) is installed in the test groove (41). The elastic test rod (42) is located on the rotation path of the drag rope (21).

6. The submarine cable weak signal enhancement and detection device against marine clutter interference according to claim 5, characterized in that: A forced adjustment pump (43) is installed on the mounting bracket (23). The output end of the forced adjustment pump (43) is connected to the transmission pipe (3). The forced adjustment pump (43) is electrically connected to the elastic test rod (42) via a program.

7. The submarine cable weak signal enhancement and detection device against marine clutter interference according to claim 6, characterized in that: Multiple telescopic rods (5) are installed on the connecting pipe (29). A clamp (51) is fixedly installed on the side of the telescopic rod (5) away from the connecting pipe (29). The clamp (51) is sleeved and connected to the drag rope (21). The telescopic rod (5) is conductively connected to the connecting pipe (29).

8. The submarine cable weak signal enhancement and detection device against marine clutter interference according to claim 7, characterized in that: The telescopic rod (5) has a spray hole (52) with the opening direction of the spray hole (52) being horizontal.

9. The submarine cable weak signal enhancement and detection device against marine clutter interference according to claim 8, characterized in that: The spray holes (52) on the telescopic rod (5) are horizontally symmetrical. A shielding plate (53) is hinged inside the telescopic rod (5). A slow-release spring rod (54) is fixedly installed on the telescopic rod (5). The slow-release spring rod (54) corresponds one-to-one with the spray holes (52). The output end of the slow-release spring rod (54) is elastically connected to the shielding plate (53) through an elastic rope (55). A baffle (56) is fixedly installed on the slow-release spring rod (54). The baffle (56) is located in the spray direction of the spray holes (52). The output power of the forced regulating pump (43) fluctuates periodically.

10. The submarine cable weak signal enhancement and detection device against marine clutter interference according to claim 9, characterized in that: The inner wall of the telescopic rod (5) is inlaid with symmetrically arranged magnetic plates (57). The magnetic plates (57) are magnetically attracted to the shielding plate (53). The magnetic attraction force between the magnetic plates (57) and the shielding plate (53) is less than the elastic force of the elastic rope (55) after the slow-release spring rod (54) is extended.

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