Double-air-cannon coupling impact test system with slender structure

Abstract

The invention relates to the technical field of explosion separation impact tests, and discloses a coupling impact test system for double air cannons of a slender structure. Comprising a main air inlet valve, a main oil-water separator, a main pressure sensor, a main safety valve, a first pressure gauge, a main electromagnetic valve, a main DN80 electromagnetic valve, a second pressure gauge, a first air chamber, a synchronous controller, an auxiliary air inlet valve, an auxiliary oil-water separator, an auxiliary pressure sensor, an auxiliary safety valve, a third pressure gauge, an auxiliary electromagnetic valve, an auxiliary DN80 electromagnetic valve, a fourth pressure gauge and a second air chamber. According to the slender-structure double-air-cannon coupling impact test system, the problem that a slender product cannot be subjected to a high-magnitude impact response spectrum test is solved. By adopting the test system, no matter the test conditions of the boundaries of the front end and the rear end of the slender test piece are the same or different, the explosion separation impact environment simulation assessment can be carried out, reliable test data can be obtained, and the synchronous controller can ensure the synchronous impact of the two impact test systems within 5ms.

Description

TECHNICAL FIELD

[0001] The present application relates to an elongated structure double air gun coupling impact test system, belonging to the technical field of explosion separation impact test. BACKGROUND

[0002] Carrying rockets and other aircraft widely use pyrotechnic devices as separation devices, and the process of stage separation, fairing separation and other processes will experience high-level transient impact response of equipment caused by pyrotechnic device explosion, that is, explosion separation impact environment. At present, many aerospace vehicles will experience more severe explosion separation impact environment during flight, and high-level impact ring explosion separation impact environment is easy to cause structural damage to equipment. Since the structure of the engine and warhead belongs to an elongated structure, the existing test system cannot meet the examination requirements of the entire structure, so it is necessary to design an explosion separation impact test system for relatively elongated (length greater than 4 times height or width) structure to meet the explosion separation impact test requirements of full-size elongated products.

[0003] The traditional elongated product cannot be subjected to high-level impact test, and cannot be subjected to explosion separation impact environment simulation examination according to the same or different test conditions of the front and rear boundaries of the elongated test piece, and the traditional cannonball is not convenient for low inflection point frequency adjustment of impact response spectrum test, and the relative elastic impact response is more suitable for complex coupling and decoupling of two impact test systems. At the same time, the temporary rack built by traditional cast block has more connection points, the frequency stability of the system is poor and the energy loss is more, it is not convenient to judge the system frequency, and it is difficult to realize the adjustment of the test inflection point frequency.

[0004] Therefore, an elongated structure double air gun coupling impact test system is provided. SUMMARY

[0005] Therefore, the present application provides an elongated structure double air gun coupling impact test system to solve or alleviate the technical problems in the prior art, and at least provides an advantageous option.

[0006] The technical scheme of the present application is implemented as follows: an elongated structure double-air-gun coupling impact test system, comprising a main air inlet valve, a main oil-water separator, a main pressure sensor, a main safety valve, a first pressure gauge, a main electromagnetic valve, a main DN80 electromagnetic valve, a second pressure gauge, a first air chamber, a synchronous controller, a secondary air inlet valve, a secondary oil-water separator, a secondary pressure sensor, a secondary safety valve, a third pressure gauge, a secondary electromagnetic valve, a secondary DN80 electromagnetic valve, a fourth pressure gauge, a second air chamber, PU polyurethane rubber, an I-shaped metal projectile body, a first air gun, a second air gun, an integrated rack, a test fixture, a support pad, an elongated test piece, and an impact projectile, wherein the output end of the main air inlet valve is connected to the input end of the main oil-water separator, the output end of the main oil-water separator is connected to the input end of the main pressure sensor, the output end of the main pressure sensor is connected to the input end of the main electromagnetic valve, the output end of the main electromagnetic valve is connected to the inner cavity of the first air chamber, the output end of the synchronous controller is connected to the input ends of the secondary DN80 electromagnetic valve and the main DN80 electromagnetic valve, the output end of the secondary air inlet valve is connected to the input end of the secondary oil-water separator, the output end of the secondary oil-water separator is connected to the input end of the secondary pressure sensor, the output end of the secondary pressure sensor is connected to the input end of the secondary electromagnetic valve, and the output end of the secondary electromagnetic valve is connected to the inner cavity of the second air chamber.

[0007] Further preferably, the main safety valve, the first pressure gauge, and the main DN80 electromagnetic valve are fixedly connected to the air inlet system surface of the first air chamber, and the secondary safety valve, the third pressure gauge, and the secondary DN80 electromagnetic valve are fixedly connected to the air inlet system surface of the second air chamber.

[0008] Further preferably, the impact projectile is a full-rubber-surface impact projectile, the PU polyurethane rubber is wrapped around the surface of the I-shaped metal projectile body, and the surface of the I-shaped metal projectile body is provided with an anti-rotation hole, and the PU polyurethane rubber is filled in the inner cavity of the anti-rotation hole.

[0009] Further preferably, the first air gun and the second air gun are fixedly installed in the inner cavities of the integrated racks, the support pads are fixedly installed on the top of the two integrated racks, the two test fixtures are fixedly installed on the top of the two groups of support pads, and the elongated test pieces are attached to the inner sides of the two test fixtures.

[0010] Further preferably, the integrated rack adopts a support system overall frame design.

[0011] The above technical scheme is adopted in the embodiment of the present application, and the following advantages are achieved: The application solves the problem that the slender product cannot be subjected to high-level impact test, and the test system can be used to carry out explosion separation impact environment simulation test and obtain reliable test data, and the synchronous controller can ensure the synchronous impact within 5ms of the two impact test systems.

[0012] The above summary is merely intended to illustrate the present description and is not intended to limit in any way. Further aspects, embodiments and features of the present application will be readily apparent from the drawings and detailed description below. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0014] Figure 1 It is a schematic diagram of the front view structure of the present application; Figure 2 It is a schematic diagram of the air path integrated structure of the present application; Figure 3 It is a schematic diagram of the I-shaped metal projectile structure of the present application; Figure 4 It is a schematic diagram of the integrated rack structure of the present application.

[0015] Reference numerals: 1, main air inlet valve; 2, main oil-water separator; 3, main pressure sensor; 4, main safety valve; 5, first pressure gauge; 6, main electromagnetic valve; 7, main DN80 electromagnetic valve; 8, second pressure gauge; 9, first air chamber; 10, synchronous controller; 11, auxiliary air inlet valve; 12, auxiliary oil-water separator; 13, auxiliary pressure sensor; 14, auxiliary safety valve; 15, third pressure gauge; 16, auxiliary electromagnetic valve; 17, auxiliary DN80 electromagnetic valve; 18, fourth pressure gauge; 19, second air chamber; 20, PU polyurethane rubber; 21, I-shaped metal elastic body; 22, first air cannon; 23, second air cannon; 24, integrated rack; 25, test fixture; 26, support pad; 27, slender test piece. DETAILED DESCRIPTION

[0016] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature and not limiting.

[0017] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0018] Example 1 As Figures 1-4As shown, the embodiment of the present application provides an elongated structure double air cannon coupling impact test system, which comprises a main air inlet valve 1, a main oil-water separator 2, a main pressure sensor 3, a main safety valve 4, a first pressure gauge 5, a main electromagnetic valve 6, a main DN80 electromagnetic valve 7, a second pressure gauge 8, a first air chamber 9, a synchronous controller 10, a secondary air inlet valve 11, a secondary oil-water separator 12, a secondary pressure sensor 13, a secondary safety valve 14, a third pressure gauge 15, a secondary electromagnetic valve 16, a secondary DN80 electromagnetic valve 17, a fourth pressure gauge 18, a second air chamber 19, a PU polyurethane rubber 20, an I-shaped metal elastic body 21, a first air cannon 22, a second air cannon 23, an integrated rack 24, a test clamp 25, a support pad 26 and an elongated test piece 27, the output end of the main air inlet valve 1 is communicated with the input end of the main oil-water separator 2, the output end of the main oil-water separator 2 is communicated with the input end of the main pressure sensor 3, the output end of the main pressure sensor 3 is communicated with the input end of the main electromagnetic valve 6, the output end of the main electromagnetic valve 6 is communicated with the inner cavity of the first air chamber 9, the output end of the synchronous controller 10 is electrically connected with the input end of the secondary DN80 electromagnetic valve 17 and the main DN80 electromagnetic valve 7, the output end of the secondary air inlet valve 11 is communicated with the input end of the secondary oil-water separator 12, the output end of the secondary oil-water separator 12 is communicated with the input end of the secondary pressure sensor 13, the output end of the secondary pressure sensor 13 is communicated with the input end of the secondary electromagnetic valve 16, the output end of the secondary electromagnetic valve 16 is communicated with the inner cavity of the second air chamber 19, the main safety valve 4, the first pressure gauge 5 and the main DN80 electromagnetic valve 7 are all fixedly connected with the air inlet system surface of the first air chamber 9, the secondary safety valve 14, the third pressure gauge 15 and the secondary DN80 electromagnetic valve 17 are all fixedly connected with the air inlet system surface of the second air chamber 19, the surface of the I-shaped metal elastic body 21 is provided with an anti-rotation hole, the PU polyurethane rubber 20 is filled in the inner cavity of the anti-rotation hole, the PU polyurethane rubber 20 is wrapped on the surface of the I-shaped metal elastic body 21, the first air cannon 22 and the second air cannon 23 are both fixedly installed in the inner cavity of the integrated rack 24, the support pads 26 are all fixedly installed on the top of the two integrated racks 24, the two test clamps 25 are both fixedly installed on the top of the two groups of support pads 26, and the elongated test pieces 27 are all attached to the inner sides of the two test clamps 25.

[0019] By setting the main air inlet valve 1, the main oil-water separator 2, the main pressure sensor 3, the main safety valve 4, the first pressure gauge 5, the main electromagnetic valve 6, the main DN80 electromagnetic valve 7, the second pressure gauge 8, the first air chamber 9, the synchronous controller 10, the auxiliary air inlet valve 11, the auxiliary oil-water separator 12, the auxiliary pressure sensor 13, the auxiliary safety valve 14, the third pressure gauge 15, the auxiliary electromagnetic valve 16, the auxiliary DN80 electromagnetic valve 17, the fourth pressure gauge 18, the second air chamber 19, the PU polyurethane rubber 20, the I-shaped metal elastic body 21, the first air cannon 22, the second air cannon 23, the integrated rack 24, the test fixture 25, the support pad 26, the slender test piece 27 and the impact projectile, the problem that the slender product cannot be subjected to high-level impact test is solved, the explosion separation impact environment simulation test can be carried out and reliable test data can be obtained by using the test system regardless of whether the test conditions of the two ends of the slender test piece 27 are the same or different, the synchronous controller 10 can ensure the synchronous impact within 5 ms of the two impact test systems, the low inflection point frequency adjustment of the impact response spectrum test is facilitated by the full-rubber surface impact projectile, the instantaneous response of the full-rubber surface impact projectile is more suitable for the coupling of the two impact test systems and the impact test of the engine, the warhead and other slender structures, the integrated rack 24 adopts the overall frame type design, compared with the temporary rack built by the cast block, the advantages are that the connection points are few, the system frequency is stable and the energy loss is small, the system frequency can be better judged, so that the adjustment of the test inflection point frequency is easy to realize.

[0020] The application works: compressed air enters the air path of the two sets of air cannon impact systems through the main air inlet valve 1 and the auxiliary air inlet valve 11, is separated and filtered through the main oil-water separator 2 and the auxiliary oil-water separator 12, the air pressure of the two air cannons is adjusted to the required pressure according to the feedback of the main oil-water separator 2 and the main oil-water separator 2, then the main electromagnetic valve 6 and the auxiliary electromagnetic valve 16 are controlled to make the gas enter the first air chamber 9 and the second air chamber 19, the main safety valve 4 and the auxiliary safety valve 14 are mainly used for the safety pressurization and pressure relief of the integrated system of the whole air path, after the air chamber pressure of the air cannon reaches the set value, then the synchronous controller 10 is controlled to release the gas, the main DN80 electromagnetic valve 7 and the auxiliary DN80 electromagnetic valve 17 release the high-pressure gas in the air chambers of the two test systems at the same time, the high-pressure gas in the air chambers drives the cannonball to impact the resonance plate at the same time to realize the double air cannon coupling test, the synchronous controller 10 can ensure the synchronous impact of the two impact test systems within 5ms, and the PU polyurethane rubber 20 can prevent the two materials of the cannonball from rotating and separating after filling the anti-rotation hole.The low inflection point frequency adjustment of the impact projectile of the full rubber surface is convenient for the impact response spectrum test, and the instantaneous response is more suitable for the decoupling of the complex coupling of two impact test systems, and is more suitable for the impact test examination of the slender structure such as the engine and the warhead. The slender test piece 27 is fixed on the integrated rack 24 of the two sets of air cannon impact systems through the test fixture 25 at both ends. The test fixture 25 and the integrated rack 24 are connected through the supporting pad 26. The two resonant steel plates of the two sets of integrated racks 24 are fixed above the first air cannon 22 and the second air cannon 23. The test conditions of the front and rear boundaries of the slender test piece 27 can be the same or different. When debugging, the test spectrum type of both ends can be debugged through the simulation piece. After completion, the coupling test is carried out through the synchronous controller 10. The integrated rack 24 adopts the overall frame type design. Compared with the temporary rack built by the casting block, the advantages are that the connection points are few, the system frequency is stable, the energy loss is small, the system frequency can be better judged, and thus the adjustment of the test inflection point frequency is easy to realize. The main air inlet valve 1, the main oil-water separator 2, the main pressure sensor 3, the main safety valve 4, the first pressure gauge 5, the main electromagnetic valve 6, the main DN80 electromagnetic valve 7, the second pressure gauge 8, the auxiliary air inlet valve 11, the auxiliary oil-water separator 12, the auxiliary pressure sensor 13, the auxiliary safety valve 14, the third pressure gauge 15, the auxiliary electromagnetic valve 16, the auxiliary DN80 electromagnetic valve 17, the fourth pressure gauge 18, and the PU polyurethane rubber 20 are directly purchased from the market. The first air chamber 9, the synchronous controller 10, the second air chamber 19, the I-shaped metal projectile 21, the first air cannon 22, the second air cannon 23, the integrated rack 24, the test fixture 25, the supporting pad 26, and the slender test piece 27 are specially designed, processed and assembled. The required raw materials are directly purchased from the market. The system adopts two sets of air cannon test systems for coupling impact. Whether the size of the test piece is long or short, the test conditions of the front and rear boundaries of the test piece are the same or different. The system is suitable for explosion separation impact environment simulation examination, especially solving the problem of explosion separation impact examination of the slender test piece.

[0021] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An elongated structure double air gun coupling impact test system, comprising a main air inlet valve (1), a main oil-water separator (2), a main pressure sensor (3), a main safety valve (4), a first pressure gauge (5), a main electromagnetic valve (6), a main DN80 electromagnetic valve (7), a second pressure gauge (8), a first air chamber (9), a synchronous controller (10), a secondary air inlet valve (11), a secondary oil-water separator (12), a secondary pressure sensor (13), a secondary safety valve (14), a third pressure gauge (15), a secondary electromagnetic valve (16), a secondary DN80 electromagnetic valve (17), a fourth pressure gauge (18), a second air chamber (19), PU polyurethane rubber (20), an I-shaped metal projectile body (21), a first air gun (22), a second air gun (23), an integrated test bench (24), a test fixture (25), a support pad (26), an elongated test piece (27) and an impact projectile, characterized in that, The output end of the main air inlet valve (1) is communicated with the input end of the main oil-water separator (2), the output end of the main oil-water separator (2) is communicated with the input end of the main pressure sensor (3), the output end of the main pressure sensor (3) is communicated with the input end of the main electromagnetic valve (6), the output end of the main electromagnetic valve (6) is communicated with the inner cavity of the first air chamber (9), the output end of the synchronous controller (10) is connected with the input end of the auxiliary DN80 electromagnetic valve (17) and the main DN80 electromagnetic valve (7), the output end of the auxiliary air inlet valve (11) is communicated with the input end of the auxiliary oil-water separator (12), the output end of the auxiliary oil-water separator (12) is communicated with the input end of the auxiliary pressure sensor (13), the output end of the auxiliary pressure sensor (13) is communicated with the input end of the auxiliary electromagnetic valve (16), and the output end of the auxiliary electromagnetic valve (16) is communicated with the inner cavity of the second air chamber (19).

2. The system according to claim 1, wherein: The main safety valve (4), the first pressure gauge (5) and the main DN80 electromagnetic valve (7) are fixedly connected to the air inlet system surface of the first air chamber (9), and the auxiliary safety valve (14), the third pressure gauge (15) and the auxiliary DN80 electromagnetic valve (17) are fixedly connected to the air inlet system surface of the second air chamber (19).

3. The system of claim 1, wherein: The impact projectile is a full-rubber surface impact projectile, and a PU polyurethane rubber (20) is wrapped on the surface of an I-shaped metal projectile body (21), and the I-shaped metal projectile body (21) is provided with an anti-rotation hole, and the PU polyurethane rubber (20) is filled in the inner cavity of the anti-rotation hole.

4. The system of claim 1, wherein: The first air cannon (22) and the second air cannon (23) are fixedly installed in the inner cavities of the integrated racks (24), the support pads (26) are fixedly installed on the top of the two integrated racks (24), the two test clamps (25) are fixedly installed on the top of the two groups of support pads (26), and the elongated test piece (27) is fixed to the inner sides of the two test clamps (25).

5. The system of claim 1, wherein: The integrated rack (24) adopts a support system overall frame type design.

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