A phase change dynamic equilibrium gun test system and test method

Abstract

The present invention provides a phase change dynamic balance gun test system and a test method. The phase change dynamic balance gun test system includes a balance body subsystem, a measurement and control subsystem, a phase change power subsystem, a projectile subsystem, and a gun mount tooling subsystem. The measurement and control subsystem includes an ignition device. The projectile subsystem includes a test structure body and a braking mechanism. The braking mechanism includes a mounting frame, and a plurality of braking devices are arranged inside the mounting frame. A brake plate extending into the mounting cavity is arranged on each of the braking devices. The phase change power subsystem includes a balance gun barrel and a phase change power module, or includes a self-propulsion system. The ignition device is connected to the phase change power module or the self-propulsion system, and the brake plate extends out to be able to brake the self-propulsion system. The present invention can meet the launch requirements of different loads and different speeds, and can be reused quickly, improving the test efficiency and application scope.

Description

Technical Field

[0001] The present invention relates to the technical field of balanced gun tests, and particularly relates to a phase change power balanced gun test system and a test method. Background Art

[0002] A balanced gun is a type of artillery that uses a balancing body and a projectile to move in opposite directions to counteract the recoil force. It can be used to launch projectiles with large mass and large diameter, and belongs to a type of recoilless gun. Generally, its structure is to load a projectile and a balancing body into a long gun barrel with an equal inner diameter. The balancing body is usually a solid counterweight equal to or larger than the mass of the projectile. The projectile is usually in a cylindrical structure. A section of the gun barrel between the two is used as the chamber and filled with gunpowder. When the gunpowder is ignited, the high-temperature gas generated pushes the projectile and the balancing body to accelerate in opposite directions. Eventually, the projectile and the balancing body fly out of the barrel simultaneously or successively and stop moving under the action of air resistance at a long distance, completing the launch process. The landing area range of the projectile or the balancing body reaches several hundred meters or even several kilometers, requiring a large test site area.

[0003] Weaponry and equipment (such as projectiles, rockets, unmanned aerial vehicles, carrier-based aircraft, etc.) face high-acceleration and high-overload harsh environments during cold ejection or solid propellant combustion launches. For example, when the equipment is in the launch tube or gun barrel or ejection system, overloading may cause the reliability of the fuze mechanism to decrease during combat launches, or damage the internal electronic components and circuits of the equipment due to overloading, resulting in the failure of the guidance system. In particular, spacecraft such as unmanned aerial vehicles and carrier-based aircraft also experience high-acceleration impact problems during high-speed ejection takeoff or emergency braking. To study and test the performance parameter changes of equipment in a high-acceleration environment, especially the anti-impact performance of the equipment and its electronic components, etc., it must be verified through anti-overload capacity tests.

[0004] In order to test the reliability of weaponry and equipment such as electronic components, guidance circuits, precision instruments, and mechanical mechanisms during high-speed launches, a balanced gun test system is usually used to conduct various tests. Existing test devices, such as a simulation test device for a gun-pry combined launch system disclosed in the patent publication No. CN116481375A, include a balanced gun section fixed on a test bench for realizing the launch of projectiles; a counterweight section fixed on the test bench behind the balanced gun section for providing resistance for the balancing body in the chamber to fly out of the barrel; and a slide rail section fixed on the test bench in front of the balanced gun section for the projectile to continue sliding after flying out of the barrel to test and study the performance parameter changes of the projectile under the action of a high-overload environment for the purpose of the test. It has the following several problems:

[0005] (1) This test system can only conduct overload tests on projectiles in the gun barrel and cannot be applied to the anti-overload performance tests of other weaponry and equipment (such as the launch or braking of unmanned aerial vehicles and carrier-based aircraft);

[0006] (2) Its test uses the gunpowder ejection method. The high-temperature gas generated by the combustion of gunpowder is likely to erode the gun barrel and the test bench, resulting in a decrease in the accuracy of subsequent tests. Moreover, the installation of gunpowder ejection is inconvenient and not conducive to rapid reuse.

[0007] (3) The test can only be carried out inside the gun barrel. It is difficult to arrange relevant test instruments and sensors, which is not conducive to systematic testing.

[0008] (4) During the test process, the equipment has a fast launch speed. Without a reliable braking device, it is impossible to effectively solve the reliable and non-destructive separation of the test load and the launch system. Summary of the Invention

[0009] The purpose of the present invention is to provide a test that can conveniently adapt to the launch requirements of different weapon systems, different load weights, and different speeds, can be quickly reused, and can effectively solve the reliable and non-destructive separation of the test load and the launch system, namely, a phase change dynamic balance gun test system and a test method, so as to improve the test efficiency and application scope.

[0010] The technical solution of the present invention is: a phase change dynamic balance gun test system, including a balance body subsystem, a measurement and control subsystem, a phase change power subsystem, a launch body subsystem, and a gun mount tooling subsystem. The measurement and control subsystem includes an ignition device.

[0011] The phase change power subsystem is arranged between the launch body subsystem and the balance body subsystem through the gun mount tooling subsystem.

[0012] The launch body subsystem includes a test structure body and a braking mechanism. The braking mechanism includes a mounting frame. A plurality of braking devices are arranged along the X direction in the mounting frame. There are two groups of the plurality of braking devices in the Y direction of the mounting frame. An installation cavity is formed between the two groups of braking devices; a brake plate extending into the installation cavity is provided on each braking device.

[0013] The phase change power subsystem includes a balance gun barrel for realizing the launch of the test structure body and a phase change power module arranged outside the balance gun barrel. Or, the phase change power subsystem includes a self-propulsion system arranged inside the balance gun barrel; the ignition device is connected to the phase change power module or the self-propulsion system. The self-propulsion system extends into the installation cavity from one end of the mounting frame, and the extended brake plate can brake the self-propulsion system; the X direction and the Y direction are perpendicular to each other in the same top view projection plane.

[0014] In the above solution, a collision limiting device and a braking mechanism are added. When the self-propulsion system drives the test structure to move, the braking mechanism brakes the self-propulsion system, and the test structure continues to move forward due to inertia until it hits the collision limiting device; among them, the reliable and non-destructive separation of the test structure and the launch system is realized through the braking mechanism to accurately collect the muzzle velocity of the test structure.

[0015] Preferably, the braking device includes a telescopic driving member and a braking frame. The braking frame is installed in the mounting frame, the telescopic driving member is installed in the braking frame, one end of the brake plate extends into the braking frame and is connected to the power output end of the telescopic driving member, and the other end of the brake plate is located in the installation cavity.

[0016] Preferably, the mounting frame has an A section and a B section connected to each other. The A section is arranged adjacent to the balance gun barrel. A plurality of first flow holes are provided on the side wall of the A section. A plurality of reinforcing ribs are arranged along the X direction inside the A section, and two groups of the plurality of reinforcing ribs are arranged along the Y direction; at least one second flow hole is provided on the reinforcing ribs, and the first flow hole, the second flow hole and the installation cavity are communicated with each other, and the braking device is installed between two adjacent reinforcing ribs.

[0017] Preferably, an air flow baffle is provided on the reinforcing rib at the boundary between the A section and the B section, and a first flow guide plate is connected to the side surface of each of the remaining reinforcing ribs, and the first flow guide plate extends in an "eight" shape; a second flow guide plate is provided at the end of the A section.

[0018] Preferably, the launch body subsystem further includes a collision limiting device for limiting the collision of the launched test structure. The other end of the mounting frame is a through port, and the collision limiting devices are arranged at intervals outside the through port.

[0019] By using the collision limiting device to limit the movement track of the test structure after it exits the barrel, the test site can be reduced.

[0020] Preferably, the self-propulsion system includes a push rod and an ejection device connected to one end of the push rod. A trailer for placing the test structure is provided at the other end of the push rod, and the push rod slides in the installation cavity.

[0021] Preferably, the ejection device includes a pressure ring, a connector device, a phase change chamber, a heating device, a rupture disk and a nozzle. The connector device is installed at one end of the phase change chamber and fixed by the pressure ring. A rupture disk and a nozzle extending from the rupture disk to the outside of the phase change chamber are provided at the other end of the phase change chamber. The heating device is arranged in the phase change chamber and connected to the connector device. One end of the phase change chamber provided with the pressure ring is connected to the push rod. Liquid carbon dioxide is provided in the phase change chamber, and the heating device is used to promote the phase change of the carbon dioxide.

[0022] Preferably, the balancing subsystem includes a balancing body and a counterweight section for providing resistance to the balancing body. The counterweight section includes a retaining seat, a damping cylinder horizontally mounted on the retaining seat, and a counterweight connected to the power output end of the damping cylinder. The counterweight is disposed adjacent to the balancing body.

[0023] Preferably, the balancing body subsystem further includes a fixing frame disposed beside the retaining seat. The fixing frame is located below the counterweight, and the lower surface of the counterweight is in frictional engagement with the upper surface of the fixing frame.

[0024] And / or, the balancing body subsystem further includes an electromagnet. The electromagnet is disposed below the counterweight, and the electromagnet is magnetically attracted to the counterweight.

[0025] The present invention also provides a test method for conducting a phase change dynamic balancing gun test using the above-mentioned phase change dynamic balancing gun test system, including:

[0026] Ignite the ignition device to activate the phase change power module or the self-propelled system to undergo a phase change in the balancing gun barrel to generate high-pressure carbon dioxide. The high pressure causes the balancing gun barrel to generate a reaction force to push the self-propelled system forward; the self-propelled system drives the test structure to move forward together.

[0027] Start the braking mechanism to drive the brake plate to extend into the installation cavity to brake the self-propelled system during the forward movement; the test structure continues to move forward under inertia and disengages from the self-propelled system, and the measurement and control subsystem collects test data.

[0028] The test structure continues to move forward and falls to complete the test.

[0029] Compared with the related art, the beneficial effects of the present invention are as follows:

[0030] First, the phase change dynamic balancing gun test system is provided with a collision limiting device and a braking mechanism. When the self-propelled system drives the test structure to move, the braking mechanism brakes the self-propelled system, and the test structure continues to move forward due to inertia until it hits the collision limiting device; among them, the reliable and non-destructive separation of the test structure and the launch system is realized through the braking mechanism to accurately collect the muzzle velocity of the test structure; the movement trajectory of the test structure after leaving the barrel is restricted by the collision limiting device, which can reduce the test site.

[0031] Second, the present invention uses carbon dioxide phase change launch. Compared with gunpowder launch, the phase change of carbon dioxide makes the gas temperature in the balancing gun barrel lower (can be controlled below 300 °C), and the gas flow scouring effect is relatively mild, greatly reducing the technical requirements for the gun barrel material; for example, a gun barrel made of stainless steel can be used. Since stainless steel is easy to process and the material cost is low, the problem of gun barrel corrosion is solved, the preparation cost is reduced, and the service life is extended.

[0032] 3. The braking mechanism adopts multiple braking devices with built-in brake plates, which can achieve effective clamping braking and is beneficial to prevent the test structure from popping out due to inertia.

[0033] 4. The flow holes, reinforcing ribs, air flow baffles and guide plates provided on the mounting frame of the braking mechanism can direct the high-pressure air flow entering the inside of the mounting frame to the two outer sides of the mounting frame, avoiding affecting the self-propulsion system of the brake.

[0034] 5. The counterweight body section adopts the frictional cooperation between the counterweight and the fixed frame and / or the damping cooperation between the counterweight and the damping cylinder, which can effectively decelerate and stop the balance body and reduce the recoil force. Description of the Drawings

[0035] Figure 1 It is a three-dimensional structure schematic diagram of the phase change power balance gun test system according to Embodiment 1 provided by the present invention;

[0036] Figure 2 It is a front sectional view schematic diagram of the phase change power balance gun test system according to Embodiment 1 provided by the present invention;

[0037] Figure 3 It is a top view structure schematic diagram of the phase change power balance gun test system according to Embodiment 1 provided by the present invention;

[0038] Figure 4 It is a structure schematic diagram of the braking mechanism removing the braking device in Embodiment 1;

[0039] Figure 5 It is an arrangement schematic diagram of multiple braking devices in Embodiment 1;

[0040] Figure 6 It is a structure schematic diagram of a single braking device in Embodiment 1;

[0041] Figure 7 It is a structure schematic diagram of the self-propulsion system in Embodiment 1;

[0042] Figure 8 It is an internal structure schematic diagram of the ejection device in Embodiment 1;

[0043] Figure 9 It is an installation structure schematic diagram of the balance gun barrel, camera, ignition cable, ignition device and pressure test system in Embodiment 2;

[0044] Figure 10 It is an internal structure schematic diagram of the balance gun barrel in Embodiment 2;

[0045] Figure 11 For Figure 10 the internal structure schematic diagram of the balance gun barrel in

[0046] Figure 12is Figure 10 a schematic structural diagram of the ejection device in

[0047] Figure 13 is Figure 11 a schematic structural diagram of the adapter bracket in

[0048] Figure 14 is a schematic diagram of the structure of the balanced gun barrel in Embodiment 3 and the decomposition of some of its parts; /

[0049]

[0049] Figure 15 is a schematic structural diagram of the balanced gun barrel in Embodiment 4;

[0050] Figure 16 is a schematic diagram of the structure of the balanced gun barrel in Embodiment 4 and the decomposition of some of its parts.

[0051] In the drawings: 1, collision limiting device; 2, support device; 3, guide rail; 4, braking device; 5, test structure body; 6, self-propulsion system; 7, balanced gun barrel; 8, balance body; 9, counterweight; 10, damping cylinder; 11, retaining seat; 12, support frame; 13, electromagnet; 14, fixing frame; 15, ignition cable; 16, ignition device; 17, hydraulic pump; 18, pipeline; 19, camera; 20, pressure testing system; 21, braking mechanism; 22, counterweight body section; 23, adapter bracket;

[0052] 201, mounting frame; 202, guide rail interface; 203, air flow baffle; 204, reinforcing rib; 2041, second flow hole; 205, first deflector; 206, second deflector; 207, first flow hole; 208, mounting cavity;

[0053] 4011, rubber plate; 4012, telescopic driving member; 4013, braking frame; 4014, tension spring; 4015, brake plate; 4016, brake pad;

[0054] 61, phase change power module; 601, ejection device; 6011, pressure ring; 6012, connector device; 6013, phase change chamber; 6014, heating device; 6015, bursting disc; 6016, nozzle; 6017, sealing strip; 6018, flow guide cover; 602, push rod; 603, trailer; 604, chute; 605, pressure equalizing chamber; 606, first flow guide pipe; 607, second flow guide pipe; 609, support;

[0055] 701, first launch tube; 702, power chamber; 703, annular pressing frame; 704, second launch tube; 7021, mounting interface; 7022, test interface; 2301, nut; 2302, connecting rod; 2303, adapter plate. Detailed implementation manners

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other. For the convenience of description, words such as "upper", "lower", "left", and "right" hereinafter only indicate the same directions as the upper, lower, left, and right directions of the accompanying drawings themselves, and do not limit the structure.

[0057] Embodiment 1

[0058] As Figures 1-3 shown, a phase change dynamic balance gun test system provided in this embodiment includes a phase change power subsystem 100, a projectile subsystem 200, a balance subsystem 300, a measurement and control subsystem 400, and a gun mount tooling subsystem 500.

[0059] The phase change power subsystem 100 includes a balance gun barrel 7 for connecting the projectile subsystem 200 and the balance subsystem 300, and a phase change power module 61 disposed outside the balance gun barrel 7, or a self-propulsion system 6 disposed inside the balance gun barrel 7.

[0060] The projectile subsystem 200 includes a collision limiting device 1, a support device 2, a guide rail 3, a braking mechanism 21, and a test structure body 5.

[0061] The balance subsystem 300 includes a balance body 8, a counterweight 9, a damping cylinder 10, a retaining seat 11, a fixing frame 14, an electromagnet 13, and a counterweight body section 22.

[0062] The measurement and control subsystem 400 includes an ignition cable 15, an ignition device 16, a hydraulic pump 17, a pipeline 18, a camera 19, and a pressure test system 20. The gun mount tooling subsystem 500 includes a support frame 12.

[0063] A braking mechanism 21 is disposed outside one end of the balance gun barrel 7, and a counterweight body section 22 is disposed outside the other end of the balance gun barrel 7. The end of the braking mechanism 21 away from the balance gun barrel 7 is provided with a collision limiting device 1 at intervals. The collision limiting device 1 is a rigid fixing seat, fixed to the ground, located on the movement trajectory of the test structure body 5, and provides a rigid collision surface for the high-speed impact of the test structure body 5.

[0064] As Figure 3 、 Figure 4 、 Figure 5As shown, the braking mechanism 21 includes a mounting bracket 201 and a plurality of braking devices 4 arranged inside the mounting bracket 201. The cross-section of the mounting bracket 201 is U-shaped. The inner surface of its bottom plate is provided with a guide rail interface 202 for mounting the guide rail 3, and the lower surface of its bottom plate is installed with the support device 2. The U-shaped mounting bracket 201 is divided into a section A and a section B. The end of the section A is provided with a through hole for the push rod 602 to pass through, and a second flow guide plate 206 is provided on the outer surface of the end of the section A. Two second flow guide plates 206 are symmetrically provided, and the outer surface of the second flow guide plate 206 is an arc surface. The section A is arranged adjacent to the balance gun barrel 7.

[0065] A plurality of first flow holes 207 are provided on the side wall of the section A. A plurality of reinforcing ribs 204 are arranged inside the section A along the X direction, and two groups of the plurality of reinforcing ribs 204 are arranged along the Y direction. One group of the reinforcing ribs 204 mounts one group of braking devices 4, and an installation cavity 208 for the push rod 602 to pass through is formed between the two groups of braking devices 4. At least one second flow hole 2041 is provided on the reinforcing rib 204, and the first flow hole 207, the second flow hole 2041 and the installation cavity 208 are communicated with each other.

[0066] An air flow baffle 203 is attached to the reinforcing rib 204 at the boundary between the section A and the section B. A first flow guide plate 205 is connected to the side surface of each of the remaining reinforcing ribs 204, and the first flow guide plate 205 extends in an "eight" shape from A to B. The surfaces of the two air flow baffles 203 close to each other are provided with arc surfaces for the push rod 602 to pass through.

[0067] The end of the section B away from the section A is a through port for the test structure body 5 to be ejected. The open end at the upper end of the U-shaped mounting bracket is adapted to the test structure body 5, so that the upper part of the test structure body 5 is placed outside the balance gun barrel 7, not limited by the inner diameter size of the balance gun barrel 7, and is suitable for the launch tests of various specifications, sizes and various shapes of weaponry (such as projectiles, unmanned aerial vehicles, carrier-based aircraft).

[0068] As Figure 6As shown, the braking device 4 includes a rubber plate 4011, a telescopic drive member 4012, a brake frame 4013, a tension spring 4014, a brake plate 4015, and a brake shoe 4016. The brake frame 4013 is installed between two adjacent reinforcing ribs 204. The telescopic drive member 4012 is a hydraulic jack, whose cylinder is mounted in the brake frame 4013 via the rubber plate 4011. One end of the brake plate 4015 extends into the brake frame 4013 and connects to the power output end (telescopic rod) of the telescopic drive member 4012. The other end of the brake plate 4015 is located in the mounting cavity 208. The outer surface of the brake plate 4015 is coated with a brake shoe 4016. The telescopic drive member 4012 drives the brake plate 4015 to extend, and the brake shoe 4016 grips the push rod 602 to achieve friction braking. The tension spring 4014 is connected between the brake frame 4013 and the brake plate 4015.

[0069] like Figure 1 、 [[ID= As shown, each telescopic drive element 4012 is connected to a hydraulic pump 17 via a pipeline 18. An appropriate hydraulic pressure can be set based on the test load to minimize the impact on the braking force of the self-propulsion system 6. The brake device 4 utilizes a jack working in conjunction with the hydraulic pump 17 to provide lifting pressure, pushing the brake plate 4015 and brake pad 4016 to apply the brake force. After braking, the brake plate 4015 is pulled back by the tension spring 4014, releasing the brake force.

[0070] like ​ As shown, the support frame 12 is equipped with multiple clamps for securing the balance barrel 7 to ensure its stability during testing. The bottom of the support frame 12 is equipped with multiple universal wheels and elevating legs. During movement, the legs are lifted off the ground and moved via the universal wheels. During testing, the legs are extended to contact the ground, lifting the universal wheels off the ground. The balance barrel 7 is positioned between the brake mechanism 21 and the counterweight segment 22.

[0071] like ​ As shown, the ignition device 16 is connected to the interior of the balance barrel 7 through an ignition cable 15. The balance barrel 7 is also connected to a pressure testing system 20.

[0072] like ​As shown in the figure, the self-propulsion system 6 includes a push rod 602 and an ejection device 601 connected to one end of the push rod 602. A trailer 603 for placing the test structure 5 is provided at the other end of the push rod 602. The push rod 602 is slidably disposed in the installation cavity 208. One side of the trailer 603 facing the moving direction of the test structure 5 is open, and there is a baffle on the opposite side. When the self-propulsion system 6 moves, the test structure 5 is pushed forward together by the baffle. When the self-propulsion system 6 is braked, the test structure 5 is ejected from the open end under the action of inertia. A chute 604 adapted to the guide rail 3 is provided at the lower end of the trailer 603, so that the push rod 602 is slidably disposed in the installation cavity 208. The surface of the ejection device 601 away from the push rod 602 is a friction braking surface, which is used to generate friction when the self-propulsion system 6 moves forward out of the gun and enters the braking mechanism 21 to assist in braking.

[0073] As ​ shown in the figure, the ejection device 601 includes a pressure ring 6011, a connector device 6012, a phase change chamber 6013, a heating device 6014, a bursting disc 6015 and a nozzle 6016. The heating device 6014 is disposed in the phase change chamber 6013 and connected to the connector device 6012. The connector device 6012 is installed at one end of the phase change chamber 6013 and fixed by the pressure ring 6011. The connector device 6012 is connected to the ignition cable 15. A sealing ring is provided between the connector device 6012 and the phase change chamber 6013 to achieve the end face seal of the phase change chamber 6013. A bursting disc 6015 and a nozzle 6016 extending from the bursting disc 6015 to the outside of the phase change chamber 6013 are provided at the other end of the phase change chamber 6013. The nozzle 6016 is threadedly connected to the phase change chamber 6013. And a sealing strip 6017 is fixed by screws at the end of the phase change chamber 6013 where the nozzle 6016 is provided to achieve the seal between the self-propulsion system 6 and the balance gun barrel 7. The side of the phase change chamber 6013 provided with the pressure ring 6011 is connected to the push rod 602 by bolts. The nozzle 6016 is gourd-shaped, which can enhance the ejection pressure.

[0074] The connector device 6012 includes a connector and an inflation valve, which are used to fill the expansion gas into the phase change chamber 6013 and allow the external ignition signal to enter the ejection device 601. A balance body 8 is provided in the balance gun barrel 7, and the nozzle 6016 is disposed adjacent to the balance body 8. Liquid carbon dioxide is injected into the phase change chamber 6013 through the connector device 6012 for pressurization and ignition, and the heat generated by the heating device 6014 is used to cause the liquid-vapor phase change and expansion of carbon dioxide. The heat of the heating device 6014 is absorbed during the phase change process, and the expanded high-pressure gas opens the bursting disc 6015 and sprays out from the nozzle 6016, pushing out the test structure 5 and simultaneously pushing out the balance body 8.

[0075] During the operation of the ejection device 601, the ignition device 16 ignites the heating device 6014 inside the ejection device 601, generating high temperature. The expanding gas expands due to heat and generates high pressure. The rupture disk 6015 opens, and the high-pressure gas flows out through the nozzle 6016, generating a reaction force to propel the self-propelled system 6 forward. At this time, the pressure value is measured through the pressure testing system 20.

[0076] As ​ shown, the counterweight section 22 is used to provide resistance to the balance body 8 to reduce the recoil force. In one embodiment, the counterweight section 22 includes a retaining seat 11, a damping cylinder 10 horizontally installed on the retaining seat 11, and a counterweight 9 connected to the power output end of the damping cylinder 10. The counterweight 9 is arranged adjacent to the balance body 8 (abutting or connected). In the second embodiment, the counterweight section 22 further includes a fixing frame 14 arranged beside the retaining seat 11. The fixing frame 14 is located below the counterweight 9, and the lower surface of the counterweight 9 is in frictional cooperation with the upper surface of the fixing frame 14. In the third embodiment, an electromagnet 13 is arranged inside the fixing frame 14. The electromagnet 13 magnetically attracts the counterweight 9 to increase the sliding resistance of the counterweight 9, and further increase the movement resistance of the balance body 8 in the balance gun barrel 7.

[0077] Through the above structural design, the movement of the balance body 8 is decelerated and stopped by the damping cooperation of the counterweight 9 and the damping cylinder 10, the frictional cooperation between the counterweight 9 and the fixing frame 14, and the magnetic attraction cooperation between the counterweight 9 and the electromagnet 13 to generate resistance to the balance body 8. The deceleration method can be selected according to the actual test situation, choosing any one or two or three combinations.

[0078] The camera 19 is arranged at the front end of the braking mechanism 21 and is used to photograph the muzzle velocity of the test structure body 5.

[0079] The gas temperature in the phase change chamber 6013 of the ejection device 601 using carbon dioxide phase change is low (can be controlled below 300 °C), which greatly reduces the requirements for the gun barrel material itself. The phase change chamber 6013 can be made of stainless steel to avoid rust and extend the service life.

[0080] The present invention also provides a test method for conducting a phase change power balance gun test using the above phase change power balance gun test system, including the following steps:

[0081] S1, ignite the ignition device 16 to trigger the ignition of the ejection device 601, generating high-pressure carbon dioxide in the balance gun barrel 7. The high pressure causes the balance gun barrel 7 to generate a reaction force to propel the self-propelled system 6 forward; the self-propelled system 6 drives the test structure body 5 to move forward together; the pressure value in the balance gun barrel 7 is measured through the pressure testing system 20;

[0082] S2. Activate the braking mechanism 21 to drive the brake plate 4015 to extend into the installation cavity 208 to brake the self-propulsion system 6 during forward movement;

[0083] S3. The test structure body 5 continues to move forward under inertia and disengages from the self-propulsion system 6 until it impacts the collision limit device 1. The muzzle velocity value of the test structure body 5 is collected by the camera 19;

[0084] S4. The balance body 8 moves in the reverse direction under the reaction force of the self-propulsion system 6 and contacts the counterweight 9, pushing the counterweight 9 to move. The movement of the counterweight 9 decelerates from acceleration to a stop under the frictional cooperation with the fixed frame 14, the frictional cooperation with the electromagnet 13, and the resistance of the damping cylinder 10; the test is completed.

[0085] After the test is completed, stop the hydraulic pump 17, and the braking mechanism 21 releases the braking state. The components of the test system can be disassembled for easy use next time.

[0086] The phase change dynamic balance gun test system can achieve repeatable tests by reloading in the phase change chamber 6013. When the test structure body 5 is in the initial position, the upper part extends to the outer side above the mounting frame 201. After accelerating to the target speed through the self-propulsion system 6, the self-propulsion system 6 immediately brakes and decelerates, and the test structure body 5 pops out and impacts the collision limit device 1 of the rigid plane. In the structural design of the counterweight 9, the electromagnet 13, and the damping cylinder 10, the axial displacement of the balance body 8 can be controlled within a small size, making the overall test system have a high space utilization rate in a limited space and can be repeatedly applied.

[0087] In the present invention, the ignition device 16 is used to ignite the self-propulsion system 6. The self-propulsion system 6 drives the test structure body 5 to eject out of the balance gun barrel 7 and stop after being braked by the braking mechanism 21; the test structure body 5 separates from the self-propulsion system 6 under inertia and impacts the collision limit device 1 for collision limitation. The balance body 8 moves in the reverse direction under the reaction force of the self-propulsion system 6 and first accelerates and then decelerates to a stop under the resistance of the counterweight section 22. After the test is completed, the self-propulsion system 6 can be taken out. The overall test system has a high space utilization rate in a limited space and can be repeatedly applied.

[0088] Embodiment 2

[0089] As ​ 、 ​ 、 ​As shown, a transfer frame 23 is provided inside the self-propelling system 6. The balanced gun barrel 7 includes a first launch tube 701, a power chamber 702, and a second launch tube 704 that are detachably connected in sequence by bolts. Annular pressing frames 703 are provided at both ends of the power chamber 702, and the annular pressing frames 703 at both ends are respectively abutted against the first launch tube 701 or the second launch tube 704 at corresponding positions. The transfer frame 23 is installed between the two annular pressing frames 703. An installation interface 7021 for the ignition cable 15 to pass through is provided at one end of the power chamber 702, and the installation interface 7021 penetrates the annular pressing frame 703. The ignition cable 15 on the ignition device 16 passes through the installation interface 7021 and is connected to the connector device 6012 and the heating device 6014. A test interface 7022 is provided on the side wall of the power chamber 702 for passing the test cable of the pressure test system 20.

[0090] As ​ shown, the annular pressing frame 703 includes two circular transfer plates 2303 arranged at intervals. Three flow holes are arranged in a circumferential manner on the transfer plate 2303 for discharging the airflow generated by the ejection device 601 into the first launch tube 701 and the second launch tube 704. A plurality of connecting rods 2302 are connected between the two transfer plates 2303 to form a whole. Both ends of the connecting rod 2302 are screw rods, and after passing through the transfer plate 2303, they are connected by nuts 2301. Both ends of the ejection device 601 are respectively installed on the corresponding transfer plates 2303.

[0091] As ​ shown, the ejection device 601 includes a pressure ring 6011, a connector device 6012, a phase change chamber 6013, a heating device 6014, a rupture disk 6015, and a flow guide cover 6018. The connector device 6012 is installed at one end of the phase change chamber 6013, and the connector device 6012 is fixed by the pressure ring 6011. A heating device 6014 connected to the connector device 6012 is provided in the phase change chamber 6013. The flow guide cover 6018 is installed at the end of the phase change chamber 6013 away from the connector device 6012. One end of the flow guide cover 6018 extends into the phase change chamber 6013, and the rupture disk 6015 is provided at the end of the extension. A plurality of flow guide holes (not labeled) are provided on the flow guide cover 6018 to eject high-pressure gas; the heating device 6014 can generate heat by burning chemical agents or by electric heating.

[0092] As ​ shown, the flow guide cover 6018 is adjacent to the balance body 8 provided in the second launch tube 704. In the initial position, a test structure body 5 is placed in the first launch tube 701, and the test structure body 5 is attached to the end of the ejection device 601 provided with the pressure ring 6011.

[0093] The phase change chamber 6013 is filled with a heating device 6014 inside, and liquid carbon dioxide is injected outside the phase change chamber 6013. The heating device 6014 generates heat inside the phase change chamber 6013 to cause the carbon dioxide to undergo liquid-vapor phase change and expand. During the phase change process, the heat of the heating device 6014 is absorbed, and the expanded high-pressure gas opens the bursting disc 6015 and sprays out from the diversion hole along the diversion cover 6018, pushing out the test structure body 5 and simultaneously pushing out the balance body 8.

[0094] Embodiment III

[0095] As ​ shown, repeat Embodiment I. The difference is that in this embodiment, the balance gun barrel 7 is the balance gun barrel 7 of Embodiment II, which includes a detachable structure of a first launch tube 701, a power chamber 702, and a second launch tube 704 connected in sequence. The ejection device 601 is placed in the power chamber 702, the push rod 602 extends out from the first launch tube 701, and the balance body 8 is placed in the second launch tube 704.

[0096] Embodiment IV

[0097] As ​ 、 ​ shown, repeat Embodiment I. The difference is that in this embodiment, the self-propulsion system 6 includes a phase change power module 61 arranged outside the balance gun barrel 7. The phase change power module 61 includes a plurality of ejection devices 601, a pressure equalizing chamber 605, a first diversion pipe 606, and a second diversion pipe 607. The plurality of ejection devices 601 are distributed on both sides in the radial direction of the balance gun barrel 7 and are arranged along the axial direction of the balance gun barrel 7. Brackets 609 for fixing the ejection devices 601 are provided on both sides of the support frame 12. The pressure equalizing chamber 605 is placed at the bottom of the support frame 12. The plurality of ejection devices 601 are communicated with the pressure equalizing chamber 605 through the second diversion pipe 607, and the pressure equalizing chamber 605 is communicated with the balance gun barrel 7 through the first diversion pipe 606.

[0098] The plurality of ejection devices 601 release high-pressure carbon dioxide gas in a certain time sequence and then introduce it into the pressure equalizing chamber 605 through the second diversion pipe 607; the high-pressure carbon dioxide after being equalized by the pressure equalizing chamber 605 then enters the balance gun barrel 7 from the first diversion pipe 606 to eject the test structure body 5.

[0099] The present invention realizes the ejection of the test structure body 5 by adopting the liquid-vapor phase change of carbon dioxide. For the small-load test structure body 5, the ejection device 601 can be arranged inside the balance gun barrel 7; when it is necessary to conduct an ejection test on a test structure body 5 with a larger mass, it can be achieved by replacing the phase change power module 61.

[0100] The above are only embodiments of the present invention, and do not thereby limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present invention.

Claims

1. A phase change dynamic equilibrium gun test system, comprising an equilibrium body subsystem (300) and a measurement and control subsystem (400), wherein the measurement and control subsystem (400) includes an ignition device (16), and is characterized in that, it further includes a phase change power subsystem (100), a launcher subsystem (200) and a gun mount tooling subsystem (500); the phase change power subsystem (100) is arranged between the launcher subsystem (200) and the equilibrium body subsystem (300) through the gun mount tooling subsystem (500); the launcher subsystem (200) includes a test structure body (5) and a braking mechanism (21), the braking mechanism (21) includes a mounting frame (201), and a plurality of braking devices (4) are arranged along the X direction in the mounting frame (201), two groups of the plurality of braking devices (4) are arranged in the Y direction of the mounting frame (201), and an installation cavity (208) is formed between the two groups of braking devices (4); a brake plate (4015) extending towards the installation cavity (208) is arranged on each braking device (4); the phase change power subsystem (100) includes an equilibrium gun barrel (7) for realizing the launch of the test structure body and a phase change power module (61) arranged outside the equilibrium gun barrel (7), or the phase change power subsystem (100) includes a self-propulsion system (6) arranged inside the equilibrium gun barrel (7); the ignition device (16) is connected to the phase change power module (61) or the self-propulsion system (6), the self-propulsion system (6) extends into the installation cavity (208) from one end of the mounting frame (201), and the extended brake plate (4015) can brake the self-propulsion system (6); the X direction and the Y direction are perpendicular to each other in the same top view projection plane.

2. The phase change dynamic equilibrium gun test system according to claim 1, wherein The braking device (4) includes a telescopic driving member (4012) and a braking frame (4013), the braking frame (4013) is installed in the mounting frame (201), the telescopic driving member (4012) is installed in the braking frame (4013), one end of the brake plate (4015) extends into the braking frame (4013) and is connected to the power output end of the telescopic driving member (4012), and the other end of the brake plate (4015) is located in the installation cavity (208).

3. The phase change dynamic balance gun test system according to claim 1, characterized in that The mounting frame (201) has an A section and a B section connected to each other, the A section is adjacent to the equilibrium gun barrel (7), a plurality of first flow holes (207) are arranged on the side wall of the A section, a plurality of reinforcing ribs (204) are arranged along the X direction inside the A section, and two groups of the plurality of reinforcing ribs (204) are arranged along the Y direction; at least one second flow hole (2041) is arranged on the reinforcing rib (204), the first flow hole (207), the second flow hole (2041) and the installation cavity (208) are communicated with each other, and the braking device (4) is installed between two adjacent reinforcing ribs (204).

4. The phase change dynamic balance gun test system according to claim 3, wherein An air flow baffle (203) is provided on a reinforcing rib (204) located at the boundary between section A and section B, and a first flow guide plate (205) is connected to the side surface of each of the remaining reinforcing ribs (204), and the first flow guide plate (205) extends in an "eight" shape; a second flow guide plate (206) is provided at the end of section A.

5. The phase change dynamic equilibrium gun test system according to claim 1, characterized in that, The emitter subsystem (200) further includes a collision limiting device (1) for limiting the collision of the launched test structure (5), the other end of the mounting frame (201) is a through port, and the collision limiting device (1) is disposed at intervals outside the through port.

6. The phase change dynamic balance gun test system according to claim 1, characterized in that, The self-propulsion system (6) includes a push rod (602) and an ejection device (601) connected to one end of the push rod (602), a trailer (603) for placing the test structure (5) is provided at the other end of the push rod (602), and the push rod (602) is slidably disposed in the mounting cavity (208).

7. The phase change dynamic equilibrium gun test system according to claim 6, wherein The ejection device (601) includes a pressure ring (6011), a connector device (6012), a phase change chamber (6013), a heating device (6014), a bursting disc (6015) and a nozzle (6016), the connector device (6012) is installed at one end of the phase change chamber (6013) and fixed by the pressure ring (6011), a bursting disc (6015) and a nozzle (6016) extending from the bursting disc (6015) to the outside of the phase change chamber (6013) are provided at the other end of the phase change chamber (6013), the heating device (6014) is disposed in the phase change chamber (6013) and connected to the connector device (6012), one end of the phase change chamber (6013) provided with the pressure ring (6011) is connected to the push rod (602), liquid carbon dioxide is provided in the phase change chamber (6013), and the heating device (6014) is used to promote the phase change of the carbon dioxide.

8. The phase change dynamic balance gun test system according to claim 1, wherein The balance subsystem (300) includes a balance body (8) and a counterweight section (22) for providing resistance to the balance body (8), the counterweight section (22) includes a stop seat (11), a damping cylinder (10) horizontally installed on the stop seat (11), and a counterweight (9) connected to the power output end of the damping cylinder (10), and the counterweight (9) is disposed adjacent to the balance body (8).

9. The phase change dynamic equilibrium gun test system according to claim 8, characterized in that The balance subsystem (300) further includes a fixing frame (14) provided beside the stop seat (11), the fixing frame (14) is located below the counterweight (9), so that the lower surface of the counterweight (9) is in frictional fit with the upper surface of the fixing frame (14); and / or, the balance subsystem (300) further includes an electromagnet (13), the electromagnet (13) is disposed below the counterweight (9), and the electromagnet (13) is magnetically attracted to the counterweight (9).

10. A test method for performing a phase change dynamic balance gun test using the phase change dynamic balance gun test system according to any one of claims 1-9, characterized in that, Comprising: Ignite the ignition device (16) to excite the phase change power module (61) or the self-propelled system (6) to undergo a phase change, generating high-pressure carbon dioxide within the balanced gun barrel (7). The high pressure causes the balanced gun barrel (7) to generate a reaction force to propel the self-propelled system (6) forward; the self-propelled system (6) drives the test structure body (5) to move forward together; Activate the braking mechanism (21), driving the brake plate (4015) to extend into the installation cavity (208) to brake the self-propelled system (6) during the forward movement; the test structure body (5) continues to move forward under inertia and disengages from the self-propelled system (6), and the measurement and control subsystem (400) collects test data; The test structure body (5) continues to move forward and falls, completing the test.

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