Underwater electric spark multi-point time-controllable explosion testing device

Abstract

The application discloses underwater electric spark multi-point time sequence controllable explosion test device, including: water tank, the horizontal guide rail arranged at the top end of the water tank; The longitudinal guide rail is arranged on the horizontal guide rail, and the longitudinal guide rail can slide along the horizontal guide rail; One end is arranged on the longitudinal guide rail long telescopic rod, the number of long telescopic rod on each longitudinal guide rail is same; One end is connected with the other end of long telescopic rod through large universal ball short telescopic rod; One end is connected with the other end of short telescopic rod through small universal ball copper pole; The other end of copper pole is provided with tungsten rod; The output end of time sequence control circuit is connected on copper pole through wiring terminal, and the control of corresponding tungsten rod ignition point is realized by output signal of time sequence control circuit to corresponding copper pole. The application realizes the underwater explosion simulation of multi-point and time sequence initiation.

Description

Technical Field

[0001] This invention pertains to underwater explosion testing technology, specifically an underwater electric spark multi-point timing controllable explosion testing device. Background Technology

[0002] With technological advancements, the defensive capabilities of naval vessels and other equipment worldwide have gradually increased. To enhance the ability of underwater weapons to strike enemy ships, research on underwater multi-shot weapon detonations has gained increasing attention from various countries. Underwater weapons primarily destroy targets through the shock wave load and bubble load generated by the warhead explosion. When damaging targets, underwater multi-shot weapons can improve damage efficiency by controlling the detonation positions of multiple weapons to simultaneously attack multiple parts of a single target or multiple targets simultaneously. Furthermore, by controlling the detonation time of multiple weapons, superimposed damage or multiple consecutive damage can be achieved from the explosive loads of multiple weapons, increasing the damage effectiveness and significantly improving the reliability of the attack weapon. Therefore, studying the coupling effects and damage mechanisms of underwater multi-point explosion shock waves and bubble loads under different detonation positions and timing conditions has significant military value.

[0003] Underwater multi-point explosion tests primarily use explosives as the detonation source. The testing process is quite dangerous, and data acquisition is difficult. Simultaneous sequential detonation requires high precision in the detonator, making precise control of the explosive detonation sequence challenging. Electrical spark devices can simulate the propagation of underwater explosion shock waves and the evolution of bubbles through pulse discharge, making them suitable for studying underwater explosion loads and damage mechanisms in a laboratory environment. However, existing underwater explosion test device patents, such as CN113324731A, CN102141523A, CN115235721A, and CN113483980A, have relatively simple structures and functions, only capable of single-point and simultaneous multi-point explosions. Summary of the Invention

[0004] This invention proposes an underwater electric spark multi-point timing controllable explosion test device to solve the problem that current underwater multi-point explosion tests are difficult to conduct under different detonation locations and different detonation timing conditions.

[0005] The technical solution to achieve the objective of this invention is: an underwater electric spark multi-point timing controllable explosion test device, comprising:

[0006] Water tank, with a horizontal guide rail at the top of the water tank;

[0007] A longitudinal guide rail is provided on the transverse guide rail, and the longitudinal guide rail can slide along the transverse guide rail;

[0008] One end of a long telescopic rod is set on the longitudinal guide rail, and the number of long telescopic rods on each longitudinal guide rail is the same;

[0009] A short retractable rod, with one end connected to the other end of a long telescopic rod via a large omnidirectional ball joint;

[0010] A copper rod connected at one end to the other end of a short retractable rod via a small omnidirectional ball joint;

[0011] A tungsten rod is provided at the other end of the copper rod;

[0012] A timing control circuit, the output of which is connected to a copper rod via a terminal block, and outputs a signal to the corresponding copper rod to control the detonation point of the corresponding tungsten rod.

[0013] The other end of the long telescopic rod extends into the water tank.

[0014] Preferably, both ends of the transverse slide rail are fixed to the water tank wall by clips.

[0015] Preferably, each longitudinal guide rail is provided with four long telescopic rods.

[0016] Preferably, both the vertical long telescopic rod and the short telescopic rod are provided with graduations.

[0017] Preferably, the timing control circuit includes a high-voltage power supply, a first capacitor with its two ends connected to the corresponding ends of the high-voltage power supply, at least one combination of a first diode and a second capacitor connected in parallel with the first capacitor, the first diode and second capacitor combination including a first diode and a second capacitor connected in series; at least one set of voltage-regulated output modules, the first input terminal of the voltage-regulated output module being connected to the connection terminal of the first diode and the second capacitor, the second input terminal of the voltage-regulated output module being grounded, the positive output terminal of the voltage-regulated output module being connected to one of the copper rods of the longitudinal guide rail through a terminal block, the negative output terminal of the voltage-regulated output module being connected to a copper rod on the longitudinal guide rail adjacent to the copper rod connected to the positive output terminal through a terminal block, and the negative output terminal of the voltage-regulated output module being grounded.

[0018] Preferably, the voltage regulation output module includes a thyristor, a second switching transistor, a first resistor, an inductor, and a second resistor. One end of the thyristor serves as an input terminal, and the other end is connected to one end of the first resistor and the inductor. The other end of the first resistor serves as a second input terminal. The other end of the inductor is connected to one end of the second resistor and serves as a positive output terminal. The other end of the second resistor is grounded and serves as a negative output terminal.

[0019] Compared with existing technologies, the significant advantages of this invention are: 1) This invention achieves multi-point and sequential detonation underwater explosion simulation. 2) This invention greatly reduces experimental costs and simulates a large number of underwater explosions. 3) In this invention, the copper rod and the output end of the discharge circuit use terminal blocks, enabling rapid changes in the experimental layout. 4) The telescopic rod of this invention has graduations, which can quickly determine the discharge position and can also serve as a ruler for high-speed photography.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the underwater electric spark multi-point detonation position control module of the present invention.

[0022] Figure 2 This is a detailed view of the end of the support.

[0023] Figure 3 This is a schematic diagram of the underwater electric spark multi-point explosion quantity and timing control module of the present invention.

[0024] 1-Water tank, 2-Snap fastener, 3-Horizontal slide rail, 4-Horizontal slider, 5-Vertical slide rail, 6-Vertical slider, 7-Long telescopic rod, 8-Large universal ball, 9-Short retractable rod, 10-Small universal ball, 11-Copper rod, 12-Tungsten rod, C1-Capacitor 1, C2-Capacitor 2, C3-Capacitor 3, C4-Capacitor 4, V1-SCR 1, V2-SCR 2, V3-SCR 3, V4-SCR 4, E1-Positive electrode 1, E2-Positive electrode 2, E3-Positive electrode 3, E4-Positive electrode 4, H1-Negative electrode 1, H2-Negative electrode 2, H3-Negative electrode 3, H4-Negative electrode 4. Detailed Implementation

[0025] The multi-point timing initiation method for simulating underwater explosions by underwater high-voltage discharge is further illustrated with reference to the figures and embodiments.

[0026] like Figure 2 As shown, an underwater electric spark multi-point timing controllable explosion test device includes:

[0027] Water tank, with a horizontal guide rail at the top of the water tank;

[0028] A longitudinal guide rail is provided on the transverse guide rail, and the longitudinal guide rail can slide along the transverse guide rail;

[0029] One end of a long telescopic rod is set on the longitudinal guide rail, and the number of long telescopic rods on each longitudinal guide rail is the same;

[0030] A short retractable rod, with one end connected to the other end of a long telescopic rod via a large omnidirectional ball joint;

[0031] A copper rod connected at one end to the other end of a short retractable rod via a small omnidirectional ball joint;

[0032] A tungsten rod is provided at the other end of the copper rod;

[0033] A timing control circuit, the output of which is connected to a copper rod via a terminal block, and outputs a signal to the corresponding copper rod to control the detonation point of the corresponding tungsten rod.

[0034] The other end of the long telescopic rod extends into the water tank.

[0035] In this invention, the vertical long telescopic rod and the short telescopic rod can be quickly adjusted in length, and in conjunction with the large universal ball and the small universal ball to change direction, multiple tungsten rods can be quickly discharged at different positions.

[0036] In a further embodiment, the two ends of the transverse slide rail are fixed to the water tank wall by clips.

[0037] In a further embodiment, both the vertical long telescopic rod and the short telescopic rod are equipped with graduations. This allows for rapid determination of the explosion location, facilitates experimental measurements, and serves as a scale for high-speed photography to determine the size of physical phenomena such as bubbles.

[0038] like Figure 1 As shown, in some embodiments, the top of the water tank is provided with two horizontal guide rails and two vertical guide rails, and each vertical guide rail is provided with four long telescopic rods.

[0039] In a further embodiment, the timing control circuit includes a high-voltage power supply, a first capacitor with its two ends connected to the corresponding ends of the high-voltage power supply, four sets of first diodes and second capacitors connected in parallel with the first capacitors, the first diode and second capacitor sets including first diodes and second capacitors connected in series; four sets of voltage-regulated output modules, the first input terminal of each voltage-regulated output module being connected to the connection terminals of the first diodes and second capacitors, the second input terminal of each voltage-regulated output module being grounded, the positive output terminal of each voltage-regulated output module being connected to one of the copper rods of the longitudinal guide rail through a terminal block, the negative output terminal of each voltage-regulated output module being connected to a copper rod on the longitudinal guide rail adjacent to the copper rod connected to the positive output terminal through a terminal block, and the negative output terminal of each voltage-regulated output module being grounded.

[0040] In a further embodiment, the voltage regulation output module includes a thyristor, a second switching transistor, a first resistor, an inductor, and a second resistor. One end of the thyristor serves as an input terminal, and the other end is connected to one end of the first resistor and the inductor. The other end of the first resistor serves as a second input terminal. The other end of the inductor is connected to one end of the second resistor and serves as a positive output terminal. The other end of the second resistor is grounded and serves as a negative output terminal.

[0041] like Figure 3 As shown, capacitors C1, C2, C3, and C4 are used for storing charge. Capacitor C5 is mainly used to compensate for the reactive power of inductive loads in the power system, thereby improving the power factor, voltage quality, reducing line losses, and increasing equipment utilization. Diodes D1, D2, D3, and D4 effectively ensure the stability of single-channel output and prevent reverse discharge of capacitors. Thyristors V1, V2, V3, and V4 are controlled by a program, which can control the number of explosion points and the explosion sequence. Inductors L1, L2, L3, and L4 act as buffers to resist current changes and stabilize the circuit current. Diodes D5, D6, D7, and D8 ensure the direction of the output current. Resistors R1, R2, R3, and R4, together with diodes D5, D6, D7, and D8, consume reverse current. Resistors R5, R6, R7, and R8 are connected in parallel at the output terminal to stabilize the voltage and keep the output voltage basically stable, thereby ensuring the normal operation of the circuit and improving its stability and reliability.

[0042] The positive terminals E1, E2, E3, and E4 of the electric spark are arranged along the four long telescopic rods A1, A2, A3, and A4 respectively, and the negative terminals H1, H2, H3, and H4 are arranged along B1, B2, B3, and B4. Alternatively, the positive and negative terminals of a group of electric sparks can be arranged on the same slide rail, such as E1, H1, E2, and H2 along A1, A2, A3, and A4, and E3, H3, E4, and H4 along B1, B2, B3, and B4.

[0043] This invention studies the coupling effect and damage mechanism of underwater multi-point explosion shock waves and bubble loads under different detonation locations and detonation sequences by changing the number of detonations, detonation locations, and detonation timing, providing theoretical and technical support for the study of explosion damage of underwater multi-shot weapons.

[0044] The detonation method of this invention is as follows: the transverse slide rail is fixed to the water tank by a buckle to achieve horizontal movement of the overall structure; the longitudinal slide rail is then fixed below the transverse slide rail by a transverse slider to achieve vertical movement of the overall structure; the long telescopic rod is vertically suspended and fixed by the longitudinal slider to achieve adjustment of the explosion depth; a short retractable rod is connected to the large universal ball joint to achieve adjustment of the explosion direction; a copper rod and a tungsten rod are connected to the small universal ball joint to achieve fine adjustment of the explosion position and direction.

[0045] The eight output terminals E1, E2, E3, E4, H1, H2, H3, and H4 of the timing control circuit are arranged along the eight long telescopic rods A1, A2, A3, A4, B1, B2, B3, and B4 respectively, according to actual needs. The copper rods are clamped at the end of the circuit using terminal blocks.

[0046] The controllable cathodes of the thyristors V1, V2, V3, and V4 in the timing control circuit are connected to the control system. The number of discharges of the thyristors is controlled by the program to change the number of explosion points in the test. At the same time, the discharge time of the thyristors can also be controlled by the program to realize the timing initiation of multiple circuits in the test.

[0047] Example 1

[0048] First, fix the transverse slide rail 3 to the water tank 1 with the buckle 2. Then fix the longitudinal slide rail 5 to the transverse slide rail 3 with the transverse slider 4. Then fix the long telescopic rod 7 together with the large universal ball 8, the short retractable rod 9, the small universal ball 10, the copper rod 11 and the tungsten rod 12 to the longitudinal slide rail 5 with the longitudinal slider 6. Then arrange the positive terminals E1, E2, E3 and E4 of the timing control circuit along A1, A2, A3 and A4 of the four long telescopic rods (7) respectively, and arrange the negative terminals H1, H2, H3 and H4 along B1, B2, B3 and B4. Clamp the copper rod 11 with the terminal block at the end of the wire to realize the discharge of four sets of electric sparks along the longitudinal column. Adjust the long telescopic rod 7 so that the large universal ball 8 is 0.45 meters from the bottom of the water tank. Rotate the copper rod 11 and tungsten rod 12 around the small universal ball 10 until they are horizontal and coaxial with the short retractable rod 9. Move the longitudinal slider 6 so that the distance between the long telescopic rods 7 is 0.1 meters and the distance between the positive and negative poles is 2 millimeters. Fill the water tank to a depth of 0.9 meters. Confirm the water depth at the end of the tungsten rod is 0.45 meters using the scale. Figure 3 The timing control of the discharge circuit modulates the voltage to 6KV, and controls the simultaneous discharge of four thyristors V1, V2, V3, and V4 in the control circuit to achieve simultaneous detonation at four points. High-speed photography is used for the shooting test.

[0049] Example 2

[0050] First, fix the transverse slide rail 3 to the water tank 1 using the buckle 2. Then, fix the longitudinal slide rail 5 to the transverse slide rail 3 using the transverse slider 4. Next, fix the long telescopic rod 7, along with the large universal ball 8, short retractable rod 9, small universal ball 10, copper rod 11, and tungsten rod 12, to the longitudinal slide rail 5 using the longitudinal slider 6. Then, arrange the positive and negative poles of a set of electric sparks in the timing control circuit on the same slide rail. E1, H1, E2, and H2 are arranged along A1, A2, A3, and A4, and E3, H3, E4, and H4 are arranged along B1, B2, B3, and B4. The copper rod 11 is clamped at the end of the wire with a terminal block, so that the four sets of electric sparks discharge along the two longitudinal columns. Adjust the long telescopic rod 7 so that the large universal ball 8 is 0.45 meters from the bottom of the water tank. Rotate the copper rod 11 and tungsten rod 12 around the small universal ball 10 until they are horizontal and coaxial with the short retractable rod 9. Rotate the short retractable rod 9 horizontally so that the angle between the positive and negative electrodes A1 and A2, A3 and A4, B1 and B2, and B3 and B4 is 60 degrees, and the distance between the positive and negative electrodes is 2 millimeters. Define the center of the positive and negative electrodes as the explosion point, and the distance between the explosion points of the four sets of electrodes is 0.1 meters. Add water to the tank to a depth of 0.9 meters. Confirm the water depth at the end of the tungsten rod is 0.45 meters using the scale. Figure 3 The timing control of the discharge circuit modulates the voltage to 6KV, and controls the discharge of three thyristors V1, V2, and V3 in the control circuit at 0.5-second intervals to achieve sequential detonation at three points. High-speed photography was used for the shooting test.

Claims

1. An underwater electric spark multi-point timing controllable explosion test device, characterized in that, include: Water tank (1), with a horizontal guide rail set at the top of the water tank; A longitudinal guide rail (5) is provided on the transverse guide rail (4), and the longitudinal guide rail (5) can slide along the transverse guide rail; One end of a long telescopic rod (7) is set on the longitudinal guide rail (5), and the number of long telescopic rods (7) on each longitudinal guide rail (5) is the same; A short retractable rod (9) is connected at one end to the other end of a long telescopic rod (7) via a large universal ball (8); A copper rod (11) is connected at one end to a short retractable rod (9) via a small universal ball (10) at the other end; A tungsten rod (12) is provided at the other end of the copper rod (11); The timing control circuit has its output terminal connected to the copper rod (11) via a terminal block. The timing control circuit outputs a signal to the corresponding copper rod to control the detonation point of the corresponding tungsten rod. The other end of the long telescopic rod (7) extends into the water tank.

2. The underwater electric spark multi-point timing controllable explosion test device according to claim 1, characterized in that, The two ends of the transverse slide rail (3) are fixed to the wall of the water tank (1) by buckles (2).

3. The underwater electric spark multi-point timing controllable explosion test device according to claim 1, characterized in that, Each longitudinal guide rail (5) is equipped with four long telescopic rods (7).

4. The underwater electric spark multi-point timing controllable explosion test device according to claim 1, characterized in that, Both the vertical long telescopic rod (7) and the short telescopic rod (9) are equipped with scales.

5. The underwater electric spark multi-point timing controllable explosion test device according to claim 1, characterized in that, The timing control circuit includes a high-voltage power supply, a first capacitor whose two ends are connected to the two ends of the high-voltage power supply, at least one combination of a first diode and a second capacitor connected in parallel with the first capacitor, the first diode and the second capacitor combination including a first diode and a second capacitor connected in series; at least one set of voltage regulation output modules, the first input terminal of the voltage regulation output module is connected to the connection terminal of the first diode and the second capacitor, the second input terminal of the voltage regulation output module is grounded, the positive output terminal of the voltage regulation output module is connected to one of the copper rods (11) of the longitudinal guide rail (5) through a terminal block, the negative output terminal of the voltage regulation output module is connected to the copper rod (11) adjacent to the copper rod connected to the positive output terminal on the longitudinal guide rail (5) through a terminal block, and the negative output terminal of the voltage regulation output module is grounded.

6. The underwater electric spark multi-point timing controllable explosion test device according to claim 5, characterized in that, The voltage regulation output module includes a thyristor, a second switching transistor, a first resistor, an inductor, and a second resistor. One end of the thyristor serves as the input terminal, and the other end is connected to one end of the first resistor and the inductor. The other end of the first resistor serves as the second input terminal. The other end of the inductor is connected to one end of the second resistor and serves as the positive output terminal. The other end of the second resistor is grounded and serves as the negative output terminal.

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