An elongated structure double air cannon coupling impact test system

Abstract

The application relates to the technical field of explosive separation impact test, and discloses an elongated structure double-air-gun coupling impact test system, which comprises 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 and a second air chamber. The elongated structure double-air-gun coupling impact test system solves the problem that the elongated product cannot be subjected to high-level impact response spectrum test. The test system can be used to simulate and check the explosive separation impact environment and obtain reliable test data, and the synchronous controller can ensure that the two impact test systems are synchronously impacted within 5 ms.

Description

Technical Field

[0001] This invention relates to a slender structure dual-air gun coupled impact test system, belonging to the field of explosion separation impact test technology. Background Technology

[0002] Launch vehicles and other aircraft widely use pyrotechnic devices as separation mechanisms. During interstage separation and fairing separation, the equipment experiences high-level transient impact responses caused by the explosion of the pyrotechnic device, i.e., an explosive separation impact environment. Currently, many aerospace vehicles experience severe explosive separation impact environments during flight. High-level impact ring explosive separation impact environments can easily lead to structural damage to the equipment. Since the structures of engines and warheads are slender, existing testing systems cannot meet the requirements for evaluating the entire structure. Therefore, it is necessary to design an explosive separation impact testing system that can meet the requirements of relatively slender structures (length greater than four times the height or width) to realize the explosive separation impact testing needs of full-size slender products.

[0003] Traditional slender products cannot undergo high-level impact testing. They cannot simulate and assess the explosive separation impact environment regardless of whether the test conditions at the front and rear boundaries of the slender test piece are the same or different. Traditional projectiles are not suitable for adjusting the low inflection point frequency of impact response spectrum tests. The relatively elastic impact response is more suitable for the complex coupling and decoupling of two impact test systems. At the same time, the temporary test benches built with traditional castings have many connection points, poor system frequency stability and significant energy loss, making it difficult to determine the system frequency and adjust the test inflection point frequency.

[0004] To address this, a slender structure dual-air gun coupled impact test system is proposed. Summary of the Invention

[0005] In view of this, the present invention provides a slender structure dual air gun coupled impact test system to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0006] The technical solution of this invention is implemented as follows: A slender structure dual-air-gun coupled impact test system includes a main intake valve, a main oil-water separator, a main pressure sensor, a main safety valve, a first pressure gauge, a main solenoid valve, a main DN80 solenoid valve, a second pressure gauge, a first air chamber, a synchronization controller, a secondary intake valve, a secondary oil-water separator, a secondary pressure sensor, a secondary safety valve, a third pressure gauge, a secondary solenoid valve, a secondary DN80 solenoid valve, a fourth pressure gauge, a second air chamber, PU polyurethane rubber, an I-shaped metal projectile, a first air gun, a second air gun, an integrated stand, test fixtures, support blocks, a slender test piece, and impact projectiles. The output end of the main intake valve... The output of the main oil-water separator is connected to the input of the main pressure sensor, which in turn is connected to the input of the main solenoid valve. The output of the main solenoid valve is connected to the inner cavity of the first air chamber. The output of the synchronous controller is connected to the inputs of the auxiliary DN80 solenoid valve and the main DN80 solenoid valve. The output of the auxiliary intake valve is connected to the input of the auxiliary oil-water separator, which is connected to the input of the auxiliary pressure sensor. The output of the auxiliary pressure sensor is connected to the input of the auxiliary solenoid valve, which is connected to the inner cavity of the second air chamber.

[0007] More preferably, the main safety valve, the first pressure gauge, and the main DN80 solenoid valve are all fixedly connected to the surface of the air intake system of the first air chamber, and the auxiliary safety valve, the third pressure gauge, and the auxiliary DN80 solenoid valve are all fixedly connected to the surface of the air intake system of the second air chamber.

[0008] More preferably, the impact projectile is an all-rubber surface impact projectile, with PU polyurethane rubber wrapping the surface of the I-shaped metal projectile, and the surface of the I-shaped metal projectile is provided with anti-rotation holes, with PU polyurethane rubber filling the inner cavity of the anti-rotation holes.

[0009] More preferably, the first air cannon and the second air cannon are both fixedly installed in the inner cavity of the integrated stand, the support pads are both fixedly installed on the top of the two integrated stands, the two test fixtures are both fixedly installed on the top of the two sets of support pads, and the slender test pieces are both attached to the inner side of the two test fixtures.

[0010] More preferably, the integrated platform adopts an overall frame design for the support system.

[0011] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions:

[0012] I. This invention solves the problem of high-level impact testing for slender products by setting up a main intake valve, main oil-water separator, main pressure sensor, main safety valve, first pressure gauge, main solenoid valve, main DN80 solenoid valve, second pressure gauge, first air chamber, synchronous controller, auxiliary intake valve, auxiliary oil-water separator, auxiliary pressure sensor, auxiliary safety valve, third pressure gauge, auxiliary solenoid valve, auxiliary DN80 solenoid valve, fourth pressure gauge, second air chamber, PU polyurethane rubber, I-shaped metal projectile, first air cannon, second air cannon, integrated stand, test fixture, support pad, and slender test piece. Using this test system, regardless of whether the test conditions at the front and rear boundaries of the slender test piece are the same or different, the explosion separation impact environment simulation assessment can be carried out to obtain reliable test data. The synchronous controller can ensure synchronous impact between two impact test systems within 5ms. All-rubber-surfaced impact projectiles facilitate low-inflection-point frequency adjustment in impact response spectrum tests. Compared to the instantaneous response of metal projectiles, they are more suitable for complex coupling and decoupling of two impact test systems, and are more suitable for impact testing of slender structures such as engines and warheads. The integrated test bench adopts an integral frame design, which has the advantages of fewer connection points, stable system frequency and less energy loss compared to temporary test benches built from cast blocks. It can better determine the system frequency, thus making it easier to adjust the test inflection-point frequency.

[0013] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the three-dimensional front view structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the gas path integrated structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the I-shaped metal projectile structure of the present invention;

[0018] Figure 4 This is a schematic diagram of the integrated frame structure of the present invention.

[0019] Reference numerals: 1. Main intake valve; 2. Main oil-water separator; 3. Main pressure sensor; 4. Main safety valve; 5. First pressure gauge; 6. Main solenoid valve; 7. Main DN80 solenoid valve; 8. Second pressure gauge; 9. First air chamber; 10. Synchronization controller; 11. Secondary intake valve; 12. Secondary oil-water separator; 13. Secondary pressure sensor; 14. Secondary safety valve; 15. Third pressure gauge; 16. Secondary solenoid valve; 17. Secondary DN80 solenoid valve; 18. Fourth pressure gauge; 19. Second air chamber; 20. PU polyurethane rubber; 21. I-shaped metal projectile; 22. First air cannon; 23. Second air cannon; 24. Integrated stand; 25. Test fixture; 26. Support block; 27. Slender test piece. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] Example 1

[0023] like Figures 1-4As shown, this embodiment of the invention provides a slender structure dual-air-gun coupled impact testing system, including a main intake 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 solenoid valve 6, a main DN80 solenoid valve 7, a second pressure gauge 8, a first air chamber 9, a synchronization controller 10, a secondary intake 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 solenoid valve 16, a secondary DN80 solenoid valve 17, a fourth pressure gauge 18, a second air chamber 19, and PU polyurethane rubber. 20. I-shaped metal projectile; 21. First air cannon; 22. Second air cannon; 23. Integrated stand; 24. Test fixture; 25. Support pad; 26. Slender test piece; 27. The output of the main intake valve 1 is connected to the input of the main oil-water separator 2; the output of the main oil-water separator 2 is connected to the input of the main pressure sensor 3; the output of the main pressure sensor 3 is connected to the input of the main solenoid valve 6; the output of the main solenoid valve 6 is connected to the inner cavity of the first air chamber 9; the output of the synchronous controller 10 is electrically connected to the auxiliary DN80 solenoid valve 17 and the main DN80 solenoid valve 18. The input terminal of the DN80 solenoid valve 7 and the output terminal of the auxiliary intake valve 11 are connected to the input terminal of the auxiliary oil-water separator 12. The output terminal of the auxiliary oil-water separator 12 is connected to the input terminal of the auxiliary pressure sensor 13. The output terminal of the auxiliary pressure sensor 13 is connected to the input terminal of the auxiliary solenoid valve 16. The output terminal of the auxiliary solenoid valve 16 is connected to the inner cavity of the second air chamber 19. The main safety valve 4, the first pressure gauge 5, and the main DN80 solenoid valve 7 are all fixedly connected to the surface of the intake system of the first air chamber 9. The auxiliary safety valve 14, the third pressure gauge 15, and the auxiliary DN80 solenoid valve 17 are all fixedly connected to... On the surface of the air intake system of the second air chamber 19, the surface of the I-shaped metal projectile 21 is provided with anti-rotation holes. PU polyurethane rubber 20 is filled in the inner cavity of the anti-rotation holes and wrapped around the surface of the I-shaped metal projectile 21. The first air cannon 22 and the second air cannon 23 are both fixedly installed in the inner cavity of the integrated stand 24. The support pads 26 are both fixedly installed on the top of the two integrated stands 24. The two test fixtures 25 are both fixedly installed on the top of the two sets of support pads 26. The slender test pieces 27 are both attached to the inner side of the two test fixtures 25.

[0024] By setting up a main intake valve 1, main oil-water separator 2, main pressure sensor 3, main safety valve 4, first pressure gauge 5, main solenoid valve 6, main DN80 solenoid valve 7, second pressure gauge 8, first air chamber 9, synchronization controller 10, auxiliary intake valve 11, auxiliary oil-water separator 12, auxiliary pressure sensor 13, auxiliary safety valve 14, third pressure gauge 15, auxiliary solenoid valve 16, auxiliary DN80 solenoid valve 17, fourth pressure gauge 18, second air chamber 19, PU polyurethane rubber 20, I-shaped metal projectile 21, first air cannon 22, second air cannon 23, integrated stand 24, test fixture 25, support pad 26, slender test piece 27, and impact projectile, the problem of high-level impact testing for slender products is solved. Using this test system, regardless of whether the test conditions at the front and rear boundaries of the slender test piece 27 are the same or different, the explosion separation impact environment simulation assessment can be carried out to obtain reliable test data. The synchronization controller 10 can ensure synchronous impact between two impact test systems within 5ms. The all-rubber-surfaced impact projectile facilitates the adjustment of the low inflection point frequency in impact response spectrum tests. Compared with metal projectiles, the instantaneous response of the all-rubber-surfaced impact projectile is more suitable for the coupling of two impact test systems, and is more suitable for impact testing of slender structures such as engines and warheads. The integrated test stand 24 adopts an integral frame design. Compared with the temporary test stand built from cast blocks, it has the advantages of fewer connection points, stable system frequency and less energy loss, and can better determine the system frequency, thus making it easier to adjust the test inflection point frequency.

[0025] In operation, compressed air enters the air circuits of two air cannon impact systems through the main intake valve 1 and the auxiliary intake valve 11. It first passes through the main oil-water separator 2 and the auxiliary oil-water separator 12 for separation and filtration. Based on feedback from 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 test pressure. Then, the main intake solenoid valve 6 and the auxiliary solenoid valve 16 are controlled to allow gas to 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 safe pressurization and depressurization of the entire integrated air circuit system. After the air chamber pressure of the air cannon reaches the set value, the gas is released through the synchronization controller 10. The main DN80 solenoid valve 7 and the auxiliary DN80 solenoid valve 17 simultaneously release the high-pressure gas from the air chambers of the two test systems. The high-pressure gas in the air chambers drives the projectiles to simultaneously strike the resonant plate to achieve a dual-air cannon coupling test. The synchronization controller 10 can ensure synchronous impact of the two impact test systems within 5ms. The PU polyurethane rubber 20 filling the anti-rotation holes prevents the two materials of the projectile from rotating and separating during high-volume impacts.The impact projectile with a full rubber surface facilitates the adjustment of the low inflection point frequency in the impact response spectrum test. Compared with the instantaneous response of metal projectiles, it is more suitable for decoupling complex couplings of two impact test systems, and is more suitable for impact testing of slender structures such as engines and warheads. The slender test piece 27 is fixed to the integrated stand 24 of the two air gun impact systems by test clamps 25 at both ends. The test clamps 25 and the integrated stand 24 are connected by support pads 26. The two resonant steel plates of the two integrated stands 24 are fixed directly above the first air gun 22 and the second air gun 23. The test conditions at the front and rear boundaries of the slender test piece 27 can be the same or different. During debugging, the test spectrum at both ends can be adjusted separately using a simulator. After completion, the coupling test is performed through the synchronous controller 10. The integrated stand 24 adopts an integral frame design. Compared with the temporary stand built from cast blocks, its advantages are fewer connection points, more stable system frequency and less energy loss, and better judgment of system frequency, thus making it easier to adjust the test inflection point frequency. The main intake valve 1, main oil-water separator 2, main pressure sensor 3, main safety valve 4, first pressure gauge 5, main solenoid valve 6, main DN80 solenoid valve 7, second pressure gauge 8, auxiliary intake valve 11, auxiliary oil-water separator 12, auxiliary pressure sensor 13, auxiliary safety valve 14, third pressure gauge 15, auxiliary solenoid valve 16, auxiliary DN80 solenoid valve 17, fourth pressure gauge 18, and PU polyurethane rubber 20 are all directly purchased from the market. The first air chamber 9, synchronous controller 10, second air chamber 19, I-shaped metal projectile 21, first air cannon 22, second air cannon 23, integrated stand 24, test fixture 25, support pad 26, and slender test piece 27 are all specially designed, processed, and assembled. All the required raw materials are directly purchased from the market. This system uses two sets of air cannon test systems for coupled impact. Regardless of the length of the test piece or the same or different test conditions at the front and rear boundaries of the test piece, this system is suitable for simulating and testing the explosive separation impact environment, especially solving the problem of explosive separation impact testing for slender test pieces.

[0026] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the 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), the output end of the auxiliary electromagnetic valve (16) is communicated with the inner cavity of the second air chamber (19), the first air cannon (22) and the second air cannon (23) are fixedly installed in the inner cavity of the integrated rack (24), the support pad (26) is fixedly installed on the top of the two integrated racks (24), the test fixture (25) is fixedly installed on the top of the two support pads (26), and the elongated test piece (27) is fixed to the inner side of the two test fixtures (25).

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), 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 the PU polyurethane rubber (20) is wrapped on the surface of the 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 integrated rack (24) adopts a support system overall frame type design.

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