Arraying system for simulating ship noise based on gas explosion sound source

Abstract

The invention relates to the technical field of underwater noise simulation, and discloses an array system for simulating ship noise based on a gas explosion sound source, which comprises a unit console, a display console, an air compressor unit, a valve control box, a gas cylinder group, a comprehensive controller, a gas explosion sound source array and a ship power station, and is characterized in that the ship power station provides power for the air compressor unit and the comprehensive controller; the unit console is used for controlling the air compressor unit, and the display console is used for performing interface display and operation parameter setting on the comprehensive controller; the air compressor unit receives a control signal of the unit console and generates compressed air flowing to the valve control box; the valve control box receives a control instruction of the comprehensive control instrument and conveys compressed gas to the gas explosion sound source array through the gas cylinder set. The gas explosion sound source array further receives a control signal of the comprehensive control instrument and works according to the control signal. According to the invention, the impact noise of the ship engine can be simulated underwater, and the purpose of simulating the real working process of the ship diesel engine is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater noise simulation, and more specifically, to an array system for simulating ship noise based on air-burst sound sources. Background Art

[0002] Currently, underwater acoustic propagation is the most effective energy form for long-distance propagation in the ocean. Therefore, ship underwater noise has a very important impact on the survival of ships and the performance of weapons and equipment, and is an important indicator of ship stealth. The noise sources of ships can be roughly divided into three categories: propeller noise, mechanical noise, and hydrodynamic noise. The noise generated by the machinery on the ship is mechanical noise, which is part of the total ship noise. Propeller noise is a mixed type of noise, which has common characteristics and sources with both mechanical noise and hydrodynamic noise. Due to the importance of propeller noise, propeller noise is separated for consideration. Hydrodynamic noise is the radiation noise generated by irregular water flow flowing past a ship sailing in the sea and the noise caused by changes in hydrodynamic processes. It is an inevitable characteristic during ship navigation and is also important information that fuzes of torpedoes, mines, etc. need to capture.

[0003] During the operation of a ship diesel engine, the impact effect generated will form relatively obvious impact signals in the sound spectrum signal. For example, in a two-stroke diesel engine, the crankshaft completes one power stroke per revolution, that is, the piston completes one working cycle every two strokes. There are mainly two types of excitation forces generated by the diesel engine during this process: one is the unbalanced force formed by the inertial force of the moving parts, and its excitation amplitude and frequency depend on the mass of the moving parts, the firing order, the number of cylinders, the number of strokes, the piston stroke, and the rotational speed; the other is the overturning moment caused by the combination of the gas pressure generated after the fuel-air mixture burns in the cylinder and the reciprocating inertial force, and its excitation amplitude and frequency depend on the cylinder diameter, piston stroke, working pressure, number of cylinders, number of strokes, and rotational speed. The impact excitation process of a ship diesel engine can be simulated underwater to form continuous impact noise. In the engineering applications of mine countermeasures, underwater decoys, or underwater jamming, a system can also be designed to simulate the noise generated by an underwater propeller to form a false target, thereby deceiving or interfering with the discrimination of torpedoes or mines against ships.

[0004] Since the existing air-burst sound sources equipped in the military are in a single-gun working mode, the pulse generated during operation is very short relative to one excitation cycle and cannot generate a continuous subsonic field, resulting in a relatively long single-pulse period. During mine-sweeping operations, it is easily recognized by the fuzes of mines. In order to effectively improve the subsonic field effect of air-burst sound sources, a continuous or nearly continuous sound field needs to be constructed to effectively deceive mine fuzes. Summary of the Invention

[0005] The object of the present invention is to provide an array method for simulating ship noise with gas explosion sound sources in view of the technical problems existing in the prior art, which can realize the simulation of the impact noise of ship engines underwater, so as to achieve the purpose of simulating the real working process of ship diesel engines.

[0006] In order to solve the above problems, the technical solution adopted by the present invention is as follows:

[0007] The present invention provides an array system for simulating ship noise based on gas explosion sound sources, including a unit control console, a display and control console, an air compressor unit, a valve control box, a gas cylinder group, an integrated control instrument, a gas explosion sound source array and a ship power station. The ship power station provides power for the air compressor unit and the integrated control instrument respectively;

[0008] The unit control console is used to control the air compressor unit, and the display and control console is used for interface display and operation parameter setting of the integrated control instrument;

[0009] The air compressor unit receives the control signal of the unit control console and generates compressed air flowing towards the valve control box; the valve control box receives the control instruction of the integrated control instrument and transports the compressed gas to the gas explosion sound source array through the gas cylinder group; the gas explosion sound source array also receives the control signal of the integrated control instrument and operates according to the control signal.

[0010] Furthermore, the array system further includes a retracting and deploying device, which also receives the power provided by the ship power station and receives the action control instruction of the integrated control instrument, and drives the gas explosion sound source array to achieve the actions of deployment into water and recovery out of water.

[0011] Furthermore, the gas explosion sound source array includes N gas explosion sound sources, and each gas explosion sound source is correspondingly provided with an electromagnetic valve. All electromagnetic valves are controlled by the integrated control instrument;

[0012] Suppose the N gas explosion sound sources are excited at an interval time t, and the arrangement order of each gas explosion sound source is arranged at intervals, and they are excited once in sequence according to the arrangement order and the interval time t. The time length T of the pulse group formed by the gas explosion sound source array is the sum of N interval times t.

[0013] Furthermore, the gas explosion sound source includes an air inlet nozzle, an electromagnetic valve, a piston, a valve core, and a valve core shaft. The valve core is arranged in the cylinder housing, and a valve core shaft is arranged on the valve core; the piston is arranged in the valve core and is movably matched with the valve core shaft; an air inlet nozzle and an electromagnetic valve are arranged on the end face of the valve core. The air inlet nozzle is connected to the gas cylinder group, and the electromagnetic valve is connected to the integrated control instrument.

[0014] Further, a main air chamber is formed between the valve core and the cylinder housing, and a communicating channel A is provided between the valve core and the valve core shaft; a detonation air chamber is formed between the side surface of the piston opposite to the valve core, and a reset air chamber communicating with the channel A is formed between the piston and the valve core shaft; the air inlet nozzle communicates with the channel A and also communicates with the main air chamber; a channel B communicating with the solenoid valve and the detonation air chamber is further provided on the valve core.

[0015] Further, the value of N ranges from 3 to 8, and N air detonation sound sources are symmetrically arranged in two groups. The axes of each group of air detonation sound sources are parallel, and adjacent air detonation sound sources are spaced at a set distance.

[0016] Further, assuming the capacity of a single large-capacity air detonation sound source is P, and the total capacity of N air detonation sound sources in the air detonation sound source array is also P, then the capacities of the N air detonation sound sources are respectively P / N.

[0017] Further, the ship adopts a single-side working system or a two-side alternating working system. If the two-side alternating working system is adopted, the interval time t1 is t / 2.

[0018] Further, sensors are respectively provided on all air detonation sound sources for detecting whether the air detonation sound sources are working properly.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1) The present invention is powered by a ship power station, provides compressed gas to the air detonation sound source array through a unit control console, an air compressor unit, a valve control box, and a gas cylinder group, and controls the operation of the air detonation sound source array through a comprehensive control instrument. The system is simple and reliable in composition, and can also simulate the impact noise of a ship engine underwater, solve the problem of simulating the underwater radiated noise during the operation of a ship diesel engine under low-speed conditions, so as to achieve the purpose of simulating the real working process of a ship diesel engine.

[0021] (2) The present invention receives the action control instruction of the comprehensive control instrument through a retracting and deploying device, drives the air detonation sound source array to achieve the actions of deploying into the water and recovering out of the water, and ensures the reliability and effectiveness of the installation and action control of the air detonation sound source array.

[0022] (3) The present invention uses N air detonation sound sources and excites them at an interval time t. The overall pulse group time length is the sum of N ts, which can greatly reduce the working cycle of a single air detonation sound source pulse and also improve the working cycle of the array.

[0023] (4) The air detonation sound source of the present invention cooperates with a valve core shaft through a piston. An air inlet nozzle connecting the gas cylinder group and a solenoid valve connecting the comprehensive control instrument are provided on the end surface of the valve core, and a main air chamber, a reset air chamber, and a detonation air chamber are formed, which can push the piston to move to release compressed gas and drive the piston to move back to its original position. The overall structure is simple, the function is reliable, and it is also easy to implement.

[0024] (5) In the present invention, N air-burst sound sources are divided into two groups and symmetrically arranged. The axes of the air-burst sound sources in each group are parallel and spaced at a set distance, avoiding interference of adjacent air-burst sound sources during excitation and affecting the reliability of the overall system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the solutions in the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0026] Figure 1 It is a composition diagram of the array system for simulating ship noise based on air-burst sound sources of the present invention.

[0027] Figure 2 It is a schematic composition principle diagram of the air-burst sound source array of the present invention.

[0028] Figure 3 It is a schematic diagram of the excitation timing control principle of the air-burst sound source array of the present invention.

[0029] Figure 4 It is a schematic structural diagram of the air-burst sound source array of the present invention.

[0030] Figure 5 It is a partial schematic diagram of the air-burst sound source array of the present invention.

[0031] Among them, 1 - air inlet nozzle, 2 - solenoid valve, 3 - cylinder housing, 4 - piston, 5 - air outlet, 7 - valve core, 8 - valve core shaft, 71 - main air chamber, 72 - reset air chamber, 73 - detonation initiation air chamber, 10 - unit control console, 20 - display and control console, 30 - air compressor unit, 40 - valve control box, 50 - gas cylinder group, 60 - integrated control instrument, 70 - retracting and deploying device, 80 - air-burst sound source array, 90 - ship power station. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs; the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, terms such as "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the drawings, which is only for convenience of description and cannot be construed as a limitation to the technical solution of the present invention.

[0033] In the description, claims and the above-mentioned drawings of the present invention, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion; the terms "first", "second", etc. in the description, claims or the above-mentioned drawings of the present invention are used to distinguish different objects, rather than to describe a specific order. In the description, claims and the above-mentioned drawings of the present invention, when an element is referred to as being "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on that other element. For example, when an element is referred to as being "connected to" another element, it may be directly or indirectly connected to that other element.

[0034] In addition, the mention of "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of the present invention. The phrase appears in various places in the description and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0035] Referring to Figure 1 As shown, the present invention provides an array system for simulating ship noise based on air-burst sound sources, including a unit control console 10, a display and control console 20, an air compressor unit 30, a valve control box 40, a gas cylinder group 50, an integrated control instrument 60, a retracting and deploying device 70, an air-burst sound source array 80, and a ship power station 90;

[0036] The ship power station 90 provides power supply for the whole system, transmits three-phase alternating current of 380V to the air compressor unit 30 and the retracting and deploying device 70 to ensure the power supply requirements for the operation of both the air compressor unit 30 and the retracting and deploying device 70; and transmits single-phase alternating current of 220V to the integrated control instrument 60.

[0037] The unit control console 10 is used to control the air compressor unit 30, and the display and control console 20 is used to perform interface display and operation parameter setting for the integrated control instrument 60.

[0038] The air compressor unit 30 receives the control signal from the unit control console 10 and generates compressed air flowing towards the valve control box 40; the valve control box 40 receives the control instruction from the integrated control instrument 60 and transports the compressed gas to the air-burst sound source array 80 through the gas cylinder group 50.

[0039] The retracting and deploying device 70 provides an installation platform for the air-burst sound source array 80, receives the action control instruction from the integrated control instrument 60, and drives the air-burst sound source array 80 to perform the actions of being deployed into the water and retrieved from the water; the air-burst sound source array 80 also receives the control signal from the integrated control instrument 60 and operates according to the control signal.

[0040] Specifically, the valve control box 40 is mainly used for pressure regulation and shunting, regulating the high-pressure air generated by the air compressor unit 30 into the required flow rate and pressure. Under the control of the comprehensive control instrument 60, the valve control box 40 can also cut off the passage of compressed air into the gas cylinder group 50 or change the compressed gas transmission channel. After the high-pressure gas enters the gas cylinder group 50 from the valve control box 40, it is directly supplied to the air explosion sound source array 80 and connected to the air inlet nozzle 1 on the air explosion sound source 80 ( Figure 4 as shown in). The control signal of the comprehensive control instrument 60 can command the retracting and deploying device 70 to perform the retracting and deploying actions on the platform. The air explosion sound source array 80 is installed on the retracting and deploying device 70, that is, the actions of deploying the air explosion sound source array 80 into the water and recovering it from the water are realized through the retracting and deploying device 70. The comprehensive control instrument 60 is connected to the solenoid valve 2 on the air explosion sound source array, controlling the opening and closing of the solenoid valve 2 to realize the operation of the air explosion sound source array 80.

[0041] In this embodiment, adopting the above system composition form can ensure and control the underwater operation of the air explosion sound source array 80. The air explosion sound source array 80 can form a continuous sound field by exciting the sound field according to the set working cycle.

[0042] Figure 2 The composition principle block diagram of the air explosion sound source array 80 is shown. The air explosion sound source array 80 includes N air explosion sound sources, and each air explosion sound source is correspondingly provided with a solenoid valve. All solenoid valves are centrally controlled by the comprehensive control instrument 60.

[0043] Suppose the N air explosion sound sources are excited at an interval time t. The arrangement order of each air explosion sound source is spaced apart, and they are excited once in sequence according to the arrangement order and the interval time t. The time length T of the pulse group formed by the air explosion sound source array 80 is the sum of N interval times t.

[0044] In this embodiment, according to the requirements of the solenoid valve working timing and the interval period, different parameters are correspondingly set on the display and control console 20, including different working interval periods and the working timing of the air explosion sound sources, and the set parameters are sent to the comprehensive control instrument 60; the comprehensive control instrument 60 controls the excitation and operation of the corresponding air explosion sound sources in the air explosion sound source array 80 according to different parameters. According to actual requirements, multiple solenoid valves and air explosion sound sources can be configured in the air explosion sound source array 80, and each air explosion sound source is configured with a solenoid valve. The working modes of each air explosion sound source, such as intermittent timing, whether to be excited and other parameters, can also be changed and redefined. The comprehensive control instrument 60 controls the opening and closing of the No. 1, No. 2... No. N solenoid valves through parameter instructions, thereby driving the excitation and operation of the corresponding air explosion sound sources.

[0045] According to the design requirements and the actual installation capacity, N can take a limited integer, and the preferred value is between 3 and 8. Figure 3Taking the air burst sound source array composed of 6 air burst sound sources as an example, it is shown that the 1# to 6# air burst sound sources are excited once every interval time t, and the pulse group time length T formed in the time domain is the sum of 6 interval times t. That is, according to the 1-6th air burst sound sources being excited at interval time t, the arrangement order of each air burst sound source should be arranged at intervals, and the excitation order should be: 1# → 2# → 3# → 4# → 5# → 6#. The total time length T of one excitation cycle is the sum of 6 t's, which makes each air burst sound source be excited only once within the time T cycle, and before the next excitation cycle comes, sufficient rest and inflation time for the air burst sound source are achieved.

[0046] Furthermore, Figure 4 It shows a schematic structural diagram of the air burst sound source array. The air burst sound source array 90 uses a total of 6 air burst sound sources from 1# to 6# integrated in the cylinder housing 3. Each air burst sound source includes an air inlet nozzle 1, an electromagnetic valve 2, a piston 4, a valve core 7, and a valve core shaft 8. The valve core 7 is arranged in the cylinder housing 3, and a main air chamber 71 is formed between them; a valve core shaft 8 is arranged on the valve core 7, and a communicating channel A is arranged between them; the piston 4 is arranged in the valve core 7 and is movably matched with the valve core shaft 8. An ignition air chamber 72 is formed between the side surfaces of the piston and the valve core 7 opposite to each other, and a reset air chamber 73 is formed between them and the valve core shaft 8. The reset air chamber 73 is communicated with the channel A.

[0047] An air inlet nozzle 1 and an electromagnetic valve 2 are arranged on the end surface of the valve core 7. The air inlet nozzle 1 is communicated with the channel A and also with the main air chamber 71; a channel B communicating the electromagnetic valve 2 and the ignition air chamber 72 is also arranged on the valve core 7; the air inlet nozzle 1 is connected to the gas cylinder group 50, and the electromagnetic valve 2 is connected to the integrated control instrument 60.

[0048] In this embodiment, after the high-pressure gas in the valve control box 40 passes through the gas cylinder group 50, it enters the air burst sound source internally for storage through the air inlet nozzle 1, that is, one way directly enters the main air chamber 71 through the air inlet nozzle 1; the other way enters the reset air chamber 73 through the channel A, and then enters the main air chamber 71 through the vent hole on the side surfaces of the piston 4 and the valve core 7;

[0049] When the air-burst sound source receives the excitation instruction from the comprehensive control instrument 60, the solenoid valve 2 operates, causing the compressed gas stored inside the main air chamber 71 of the air-burst sound source to enter the upper part of the piston 4, i.e., the detonation initiation air chamber 72, after passing through the solenoid valve 2 and through the channel of the valve core 7 (not shown in the figure); this breaks the balance of the piston 4, that is, the compressed gas in the detonation initiation air chamber 72 pushes the piston 4 towards the air outlet 5, and the compressed gas stored inside the main air chamber 71 flows out of the air-burst sound source through the air outlet 5; the pressure inside the main air chamber 71 decreases, but the compressed gas stored inside the reset air chamber 73 drives the piston 4 away from the air outlet, closing the outflow channel of the high-pressure gas and restoring to the previous gas storage state. The compressed gas flowing out of the air-burst sound source, due to its pressure being much greater than the pressure of the surrounding environment, will rapidly expand, forming a large bubble that continuously oscillates underwater, and the pressure fluctuations generated by the oscillation radiate outward to form the sound field of the air-burst sound source.

[0050] Further, Figure 4 Taking the array composed of 6 air-burst sound sources as an example, the air-burst sound source array is integrated inside the cylinder housing 3. To prevent the interference of each air-burst sound source on adjacent air-burst sound sources during excitation, when arranging the 1# - 6# air-burst sound sources, they are divided into two groups for symmetric setting, the axes of each group of air-burst sound sources are parallel, and the adjacent air-burst sound sources are spaced at a set distance.

[0051] In this embodiment, the energy distribution of the sound field generated by the air-burst sound source is relatively wide, but the main energy is concentrated in the low-frequency band. Under the condition that the working principle of a single air-burst sound source remains unchanged, if the working mode of the air-burst sound source can be changed to significantly reduce the excitation period of a single air-burst sound source, continuous excitation of the air-burst sound source can be achieved, which can effectively improve the sound field effect of the air-burst sound source.

[0052] Further, if the capacity of a single large-capacity air-burst sound source is set as P, and the total capacity of N air-burst sound sources in the air-burst sound source array is also P, then the capacities of the N air-burst sound sources are each P / N.

[0053] In this embodiment, due to the limitations of the high-pressure gas station and the gas supply pipeline, to ensure that the inflation rate and gas consumption remain basically unchanged, the total capacity of the air-burst sound source array can be made to tend to be consistent with that of a single large-capacity air-burst sound source in terms of gas consumption. Assuming that a single large-capacity air-burst sound source is set as 1.2L, if the structure form of the air-burst sound source array is adopted, the gas storage chamber of a single air-burst sound source can be set as a small air-burst sound source with a capacity of 0.2L, and then an array is composed of 6 small-capacity air-burst sound sources with a capacity of 0.2L each.

[0054] Further, the ship adopts a single-side working system or a two-side alternating working system. If the two-side alternating working system is adopted, the interval time t1 is t / 2.

[0055] In this embodiment, if the ship uses a 6-gun per second working system on a single side, the set interval time t is 0.2 s, and then a working cycle T is 1.2 s. In this cycle, a nearly continuous sound field can be generated. If the ship uses an alternating working system on both sides, the set interval time t1 is t / 2 (i.e., 0.1 s), then the working cycle T is 1.2 s, and a continuous sound field can basically be generated. This can also make each small air-burst sound source fully inflated, avoiding the working mode where a single large-volume air-burst sound source with a volume of 1.2 L cannot work alternately on the left and right sides at short intervals continuously.

[0056] Specifically, since the deflation time of a single air-burst sound source is short, but the inflation time is relatively long, to meet the requirement of the continuous working system of the air-burst sound source, multiple air-burst sound sources are arrayed. In this array, 6 single-gun air chambers are used for arraying. If the alternating working mode on both sides is adopted, a total of 12 air-burst sound sources are required. The working cycle of each air-burst sound source is 0.1 s, which is equivalent to the minimum pulse cycle of the air-burst sound sources in the array being 0.1 s. One cycle of the alternating working mode on both sides is equivalent to 1.2 s, greatly reducing the working cycle of a single air-burst sound source pulse and also increasing the working cycle of the array. If the pulse cycle of the air-burst sound source is 0.1 s, it can fully simulate the pulse cycle of a 10 Hz air-burst sound source and can also simulate the effect of the rotation operation of a diesel engine crankshaft at a speed of 600 r / min.

[0057] Furthermore, sensors are respectively arranged on all air-burst sound sources to detect whether the air-burst sound sources are working normally.

[0058] Specifically, since the working interval between each small air-burst sound source is 0.1 s, it is impossible to manually judge whether there is any air-burst sound source that is not working. Using sensors to judge whether each air-burst sound source is working normally is simple and reliable.

[0059] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. An array system for simulating ship noise based on air explosion sound sources, characterized in that: It includes a unit control console, a display and control console, an air compressor unit, a valve control box, a gas cylinder group, a comprehensive control instrument, an air explosion sound source array, and a ship power station. The ship power station supplies power to the air compressor unit and the comprehensive control instrument respectively; The unit control console is used to control the air compressor unit, and the display and control console is used for interface display and operation parameter setting of the comprehensive control instrument; The air compressor unit receives the control signal from the unit control console and generates compressed air flowing towards the valve control box; the valve control box receives the control instruction from the comprehensive control instrument and conveys the compressed gas to the air explosion sound source array through the gas cylinder group; the air explosion sound source array also receives the control signal from the comprehensive control instrument and operates according to the control signal.

2. The array system for simulating ship noise based on air-burst sound sources according to claim 1, wherein: The array system further includes a retracting and deploying device, which also receives the power supplied by the ship power station and the action control instruction from the comprehensive control instrument, and drives the air explosion sound source array to perform the actions of deployment into water and recovery out of water.

3. The array system for simulating ship noise based on air-burst sound sources according to claim 1 or 2, characterized in that: The air explosion sound source array includes N air explosion sound sources, and each air explosion sound source is correspondingly provided with an electromagnetic valve. All electromagnetic valves are controlled by the comprehensive control instrument; It is assumed that the N air explosion sound sources are excited at an interval time t. The arrangement order of each air explosion sound source is arranged at intervals, and they are excited in sequence according to the arrangement order and the interval time t once. The time length T of the pulse group formed by the air explosion sound source array is the sum of N interval times t.

4. The array system for simulating ship noise based on gas explosion sound sources according to claim 1, wherein: The air explosion sound source includes an air inlet nozzle, an electromagnetic valve, a piston, a valve core, and a valve core shaft. The valve core is arranged inside a cylinder housing, and a valve core shaft is arranged on the valve core; the piston is arranged inside the valve core and is movably matched with the valve core shaft; an air inlet nozzle and an electromagnetic valve are arranged on the end face of the valve core. The air inlet nozzle is connected to the gas cylinder group, and the electromagnetic valve is connected to the comprehensive control instrument.

5. The array system for simulating ship noise based on air-burst sound sources according to claim 4, wherein: A main air chamber is formed between the valve core and the cylinder housing, and a communicating channel A is arranged between the valve core and the valve core shaft; a detonation air chamber is formed between the side surface of the piston opposite to the valve core, and a reset air chamber communicating with the channel A is formed between the piston and the valve core shaft; the air inlet nozzle is communicated with the channel A and also with the main air chamber; a channel B communicating the electromagnetic valve and the detonation air chamber is also arranged on the valve core.

6. The array system for simulating ship noise based on air-burst sound sources according to claim 3, wherein: The value of N ranges from 3 to 8. The N air explosion sound sources are divided into two groups and symmetrically arranged. The axes of each group of air explosion sound sources are parallel, and the adjacent air explosion sound sources are spaced at a set distance.

7. The array system for simulating ship noise based on air-burst sound sources according to claim 3, characterized in that: Let The capacity of a single large-capacity air explosion sound source is P, and the total capacity of the N air explosion sound sources in the air explosion sound source array is also P. Then the capacities of the N air explosion sound sources are respectively P / N.

8. The array system for simulating ship noise based on air-burst sound sources according to claim 3, wherein: The ship adopts a single-side working system or an alternating two-side working system. If the alternating two-side working system is adopted, the interval time t1 is t / 2.

9. The array system for simulating ship noise based on air-burst sound sources according to claim 3 or 8, characterized in that: Sensors are respectively arranged on all the air explosion sound sources to detect whether the air explosion sound sources are working normally.

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