A fixed linear array submarine arraying structure and method

Abstract

The application belongs to the technical field of fixed line array and specifically relates to a seabed array structure of a fixed line array, mainly comprising a weight, a floating ball, a line array, a steel wire rope, a strong rope, a metal harper, a nylon harper and a cable, the two ends of the steel wire rope are respectively fixedly provided with the weight, the line array is arranged on one side of the steel wire rope, the nylon harpers are installed on the line array at equal intervals along the length direction of the line array, one strong rope is connected to each of the nylon harpers, the nylon harpers are connected to the metal harpers through one end of the strong rope, the metal harpers are installed on the steel wire rope at equal intervals, the two ends of the line array are respectively connected with one floating ball through the strong rope, and the two ends of the line array are fixed on the weights at the two ends of the steel wire rope through the strong rope arranged in a cable-stayed mode. The application realizes all-around collection of acoustic signals, limits the distortion of the fixed line array caused by ocean current disturbance, reduces the stress of the line array during the laying process, and makes the array laying safer and more effective.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fixed linear array, and particularly relates to a seabed array structure and method of fixed linear array. BACKGROUND

[0002] According to whether the array position is moved during operation, the linear array can be divided into two types: a towed linear array and a fixed linear array. The towed linear array is generally towed by a ship and can detect seabed geological features and oil and mineral resources in a large range, and can also obtain marine information such as fish behavior. The fixed linear array is generally laid on the seabed and can be used for sea area monitoring in the field of national defense and for the exploration of the characteristics of passing ships or marine ecosystems. The traditional fixed linear array is fixed by two heavy objects and then sinks into the seabed, and then is straightened, so that the linear array is approximately straight in the seawater. This fixing method of the linear array is easy to be disturbed by the ocean current, causing the array to bend, and the seabed silt also affects the reception of the acoustic signal. At the same time, during the straightening process, a pulling force is directly applied to the linear array, and the linear array has a risk of breaking.

[0003] The patents CN109283513A and CN2909208Y relate to the array laying method, but are obviously different from the present patent. The array laying method in CN109283513A is suitable for the surface of an inner lake and cannot be applied to the seabed. CN2909208Y is a paddle type torque balance propeller at both ends of the linear array, which is used to straighten the linear array. The structure is complex and cannot effectively control the working depth and attitude. In the article "Research on the laying scheme of the distributed optical fiber sensing system of the seabed pipeline", the laying method of the seabed pipeline with optical fiber sensors is mentioned, but the application field and laying method are obviously different from the present patent. The pipeline with optical fiber sensors is used to transmit oil and gas resources, and the laying requirements are low, and the influence of silt and ocean current does not need to be considered. SUMMARY

[0004] In order to avoid the shielding of the seabed silt to the acoustic sensor, realize the omnidirectional collection of the acoustic signal, limit the distortion of the fixed linear array caused by the ocean current disturbance, reduce the stress of the linear array during the laying process, and make the array laying more safe and effective, the present application provides a seabed array structure and method of fixed linear array.

[0005] The present application provides the following technical solutions:

[0006] The application discloses a seabed array structure of a fixed linear array, which mainly comprises a weight, a floating ball, a linear array, a steel wire rope, a strong rope, a metal harper, a nylon harper and a cable, the steel wire rope is provided with the weight at both ends, the linear array is arranged on one side of the steel wire rope, the nylon harper is installed on the linear array at equal intervals along the length direction of the linear array, the nylon harper is tied with the strong rope, the nylon harper is connected with the metal harper through one end of the strong rope, the metal harper is installed on the steel wire rope at equal intervals, the linear array is connected with the floating ball through the strong rope at both ends, and the linear array is fixed on the weight at both ends of the steel wire rope through the strong rope arranged at an angle.

[0007] Preferably, one end of the weight on the steel wire rope is tied with the cable, and one end of the cable is connected with the floating ball.

[0008] Preferably, the density of the linear array is less than the density of seawater, and the linear array is fixed on the steel wire rope at equal intervals through the strong rope arranged at equal lengths.

[0009] Preferably, the weight and the strength of the steel wire rope are matched with the weight, and the steel wire rope is not easy to bend under the influence of external factors after being arranged.

[0010] Preferably, the buoyancy of the floating ball at both ends of the linear array and the tension of the strong rope arranged at an angle generate transverse tension in opposite directions at both ends of the linear array.

[0011] The application further discloses a seabed array method of the fixed linear array.

[0012] The first step is to fix the nylon harper on the linear array at equal intervals in advance, and fix the metal harper on the steel wire rope at equal intervals, which are used for fixing the strong rope arranged at equal lengths between the linear array and the steel wire rope.

[0013] The second step is to connect the weight and the steel wire rope through the strong rope arranged at an angle below both ends of the linear array, and connect the floating ball through the strong rope above both ends of the linear array.

[0014] The third step is to release the weight and the steel wire rope on the mother ship, and release the linear array, and connect the nylon harper and the metal harper through the strong rope.

[0015] The fourth step is to release the steel wire rope, and move the mother ship forward until the tail end of the steel wire rope is reached when the released length of the steel wire rope is equal to the water depth.

[0016] The fifth step is to connect the weight and the cable at the tail end of the steel wire rope, continue to release the cable, and move the mother ship forward until the length of the cable is equal to twice the water depth.

[0017] The sixth step is to continue to move the mother ship forward until the distance between the mother ship and the release point is greater than the sum of the length of the linear array and the released cable.

[0018] Seventh step: release all the cables, and tie the float ball at the end of the cable, place it on the sea surface, for use when the array is collected.

[0019] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects:

[0020] 1. The array structure and method can make the line array suspended at a position away from the seabed by a certain distance, avoiding the shielding of the seabed mud to the acoustic sensor, and realizing the omnidirectional collection of acoustic signals.

[0021] 2. By fixing the line array equidistantly on the straight steel wire rope, the line array is straightened by the resultant force of the float balls at the head and tail ends and the inclined strong ropes, avoiding the bending of the array type caused by ocean current disturbance after deployment.

[0022] 3. The line array is fixed on the steel wire rope, and only the steel wire rope needs to be straightened during array deployment, avoiding direct stress on the line array, making the array deployment more efficient and safe. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the improved array structure of the present application;

[0024] Figure 2 is a schematic diagram of the array structure before improvement of the present application.

[0025] The markings in the figure are as follows:

[0026] 1 - weight; 2 - float ball; 3 - line array; 4 - steel wire rope; 5 - strong rope; 6 - metal harper clamp; 7 - nylon harper clamp; 8 - cable. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] The traditional fixed line array seabed array structure is shown in detail in the accompanying Figure 2 The weight is fixed at the head and tail ends of the line array, slowly put into the seabed from the head to the tail, and then the line array is straightened by the load cable at the tail end, so that it is approximately straight in the seawater. After array deployment, the line array is easily disturbed by the ocean current, causing the array type to bend, and the seabed mud also shields the acoustic sensor, affecting the reception of acoustic signals; at the same time, the array deployment method directly applies tension to the line array during straightening, and the line array has a risk of breaking.

[0029] As shown in the accompanyingFigure 1 The application discloses a fixed linear array seabed arrangement structure, which mainly comprises a weight 1, a floating ball 2, a linear array 3, a steel wire rope 4, a strong rope 5, a metal harper clamp 6, a nylon harper clamp 7 and a cable 8, the weight 1 is arranged at the two ends of the steel wire rope 4, the linear array 3 is arranged on one side of the steel wire rope 4, the nylon harper clamp 7 is installed on the linear array 3 at equal intervals along the length direction of the linear array 3, one strong rope 5 is connected to each of the nylon harper clamps 7, the nylon harper clamp 7 is connected to the metal harper clamp 6 through one end of the strong rope 5, the metal harper clamps 6 are installed on the steel wire rope 4 at equal intervals, the floating ball 2 is connected to each of the two ends of the linear array 3 through the strong rope 5, and the two ends of the linear array 3 are fixed on the weights 1 at the two ends of the steel wire rope 4 through the strong ropes 5 arranged at an angle.

[0030] Specifically, one end of the weight 1 on the steel wire rope 4 is connected with the cable 8, one end of the cable 8 is connected with the floating ball 2, and the other end of the cable 8 is connected with a mother ship.

[0031] Specifically, the density of the linear array 3 is less than the density of seawater, the linear array 3 is fixed on the steel wire rope 4 at equal intervals through the strong ropes 5 arranged at equal lengths, and the linear array 3 can be suspended at a certain distance above the seabed after being laid.

[0032] Specifically, the weight and the strength of the steel wire rope 5 cooperate with the weight of the weight 1, the steel wire rope 5 is not easy to bend under external influence after being arranged in tension, the linear array 3 is fixed on the steel wire rope 4 at equal distances through the strong ropes 5 arranged at equal lengths, and the deformation of the linear array 3 is limited.

[0033] Specifically, the buoyancy of the floating ball 2 at the two ends of the linear array 3 and the tension of the strong rope 5 arranged at an angle generate transverse tension in opposite directions at the two ends of the linear array 3, so that the linear array 3 is kept straight, the whole laying and recovery process is realized through the force borne by the steel wire rope 4 and the cable 8, and the linear array 3 itself is not subjected to force.

[0034] A fixed linear array seabed arrangement method, and the specific steps are as follows:

[0035] Step 1: fix the nylon harper clamps 7 on the linear array 3 at equal intervals in advance, and fix the metal harper clamps 6 on the steel wire rope 4 at equal intervals, which are used for fixing the strong ropes 5 arranged at equal lengths between the linear array 3 and the steel wire rope 4;

[0036] Step 2: the strong ropes 5 arranged at an angle are used for connecting the weight 1 and the steel wire rope 4 below the two ends of the linear array 3, and the floating balls 2 are connected through the strong ropes 5 above the two ends of the linear array 3;

[0037] Step 3: the weight 1 and the steel wire rope 4 are released on the mother ship, the linear array 3 is released at the same time, and the nylon harper clamps 7 and the metal harper clamps 6 are connected through the strong ropes 5;

[0038] Fourth step: when the length of the steel wire rope 4 is equal to the water depth, the ship moves forward while the steel wire rope 4 is released;

[0039] Fifth step: the weight 1 at the tail end of the steel wire rope 4 is connected with the cable 8, the cable 8 is continuously released, and the ship moves forward until the length of the cable 8 is equal to twice the water depth, and the releasing of the cable 8 is stopped;

[0040] Sixth step: the ship continues to move forward until the distance between the ship and the releasing point is greater than the sum of the length of the line array 3 and the cable 8;

[0041] Seventh step: all the cables 8 are released, and the floating ball 2 is connected at the tail end of the cable 8 and placed on the sea surface for use when the array is collected.

[0042] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, and any modification and replacement based on the technical solutions and inventive concepts provided by the present application should be covered in the protection scope of the present application.

Claims

1. A seabed array structure for a fixed line array, characterised in that: The utility model relates to a kind of underwater array release device, including heavy (1), float ball (2), line array (3), steel wire rope (4), strong rope (5), metal harper (6), nylon harper (7) and cable (8), the steel wire rope (4) two ends are respectively fixed with heavy (1), the line array (3) is arranged in steel wire rope (4) side, along line array (3) length direction on equal interval installation has nylon harper (7), the nylon harper (7) is all tied with a strong rope (5), nylon harper (7) is connected with metal harper (6) by strong rope (5) one end, the metal harper (6) equal interval installation is on steel wire rope (4), the line array (3) both ends are connected with a float ball (2) by strong rope (5) respectively, and line array (3) both ends are fixed on the heavy (1) of steel wire rope (4) both ends by strong rope (5) of inclined pull arrangement, the buoyancy of the float ball (2) of line array (3) both ends and the tension of strong rope (5) of inclined pull arrangement generate opposite direction transverse tension on line array both ends.

2. The fixed linear array seabed deployment structure of claim 1, wherein: The heavy (1) on the steel wire rope (4) has a cable (8) tied to one end, and the cable (8) has a float ball (2) connected to one end.

3. The fixed linear array seabed deployment structure of claim 1, wherein: The line array (3) has a density less than the density of seawater, and the line array (3) is fixed on the steel wire rope (4) by strong rope (5) of equal length arrangement.

4. The fixed linear array seabed deployment structure of claim 1, wherein: The weight and strength of the steel wire rope (4) itself cooperate with the weight of the heavy (1), and the steel wire rope (4) is not easy to bend after stretching arrangement due to external influence.

5. A method of laying a fixed line array under the sea according to any one of claims 1 to 4, characterized in that, The specific steps are as follows: First step: fix the nylon harper (7) on the line array (3) in advance, and fix the metal harper (6) on the steel wire rope (4) at equal intervals, for fixing the strong rope (5) of equal length between the line array (3) and the steel wire rope (4); Second step: connect the heavy (1) and the steel wire rope (4) by the strong rope (5) of inclined pull arrangement at the bottom of the line array (3) at both ends, and connect the float ball (2) by the strong rope (5) at the top of the line array (3) at both ends; Third step: release the heavy (1) and the steel wire rope (4) on the mother ship, and release the line array (3) at the same time, connect the nylon harper (7) and the metal harper (6) by the strong rope (5); Fourth step: when the released length of the steel wire rope (4) is equal to the water depth, release the steel wire rope (4) on one side, and move the mother ship forward at the same time, until the tail end of the steel wire rope (4) is reached; Fifth step: connect the heavy (1) and the cable (8) at the tail end of the steel wire rope (4), continue to release the cable (8), and move the mother ship forward at the same time, until the length of the cable (8) is equal to twice the water depth, stop releasing the cable (8); Sixth step: continue to move the mother ship forward, until the distance from the mother ship to the release point is greater than the sum of the length of the line array (3) and the cable (8) released; Seventh step: release all the cable (8), and tie a float ball (2) at the tail end of the cable (8), and place it on the sea surface for use when the array is collected.

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