A nuclear explosion shock wave simulation test system

Abstract

The present invention proposes a nuclear explosion shock wave simulation test system, comprising a load generation section and a test section. The load generation section is composed of a sub-explosion chamber assembly, a main explosion chamber, and a diaphragm mounting section, connected sequentially from left to right. The test section comprises, arranged sequentially from left to right, a charge test section, a first test section, a first variable diameter section, a second test section, a second variable diameter section, and a third test section. The charge test section is a circular tubular structure, and the first, second, and third test sections are all straight-walled circular arch tubular structures. The present invention and system can simulate all elements of an explosion shock wave environment, providing a fully functional explosion shock wave simulation test system with significant military and academic value.

Description

Technical Field

[0001] The invention relates to a blast wave simulation test technology, in particular to a nuclear explosion shock wave simulation test system. Background Art

[0002] The explosion wave simulation test system is a set of test equipment that uses explosion shock waves as a test loading method to test the explosion resistance of various components and equipment.

[0003] Existing blast wave simulation test systems often have blast wave simulators, limited by technical research and equipment development, that often target a single simulation objective. However, the reality is that there are numerous simulated targets capable of producing explosive effects, and the effects vary significantly, making a single device unable to meet all technical requirements. The design of blast wave simulators involves two key aspects: energy loading method and controlled release technology. Based on their intended use, they can be categorized into three main applications: nuclear weapon blast wave simulation, conventional weapon blast wave simulation, and complex wave simulation. Nuclear weapon blast waves are characterized by long positive pressure durations, with low requirements for peak overpressure. The primary objective is to achieve high impulse loading. Conventional weapon blast waves are characterized by durations of tens of milliseconds, but with higher peak overpressure requirements of several or even tens of megapascals. High peak overpressure loading is the key objective. Complex waves are targeted at complex blast environments, where the shock wave exhibits peak and temporal uncertainty along its propagation path.

[0004] In existing blast wave simulation test systems, regardless of their design, the blast wave simulator can only reflect one or two indicators of the simulated loaded shock wave, making it difficult to fully meet the requirements. Therefore, to obtain comprehensive laboratory simulation loading capabilities for blast waves, a full range of test equipment must be developed. The blast wave generated by a nuclear weapon blast wave simulator has enormous energy, covering the blast waves of various explosion sources, such as the vast majority of weapon explosions and accidental explosions. Therefore, we have developed a nuclear blast wave simulator that also simulates the shock waves of conventional weapon explosions. However, this nuclear blast wave simulator alone does not constitute a complete test system. Therefore, it is necessary to develop a test system based on this nuclear blast wave simulator. Summary of the Invention

[0005] In response to the problems raised in the background technology, the purpose of the present invention is to provide a nuclear explosion shock wave simulation test system, which has the ability to simulate nuclear explosion shock waves and can simulate the explosion waves of various explosion sources such as most weapon explosions and accidental explosions. At the same time, the test section of the system can also carry out explosive explosions. Through the explosion waves generated by the test section, a chasing, superimposing and suturing technology of the explosion shock waves can be established, which effectively improves the super shock wave pressure of the shock wave in the test section and meets the needs of high-level protective equipment testing.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A nuclear explosion shock wave simulation test system includes: a load generation section and a test section; the load generation section is composed of a sub-explosion chamber assembly, a main explosion chamber and a diaphragm installation section connected in sequence from left to right;

[0008] The main explosion chamber includes a first explosion chamber first reducer, a second explosion chamber, a second reducer, and a third explosion chamber connected in sequence from left to right; the first explosion chamber, the second explosion chamber, and the third explosion chamber are all circular straight tube structures, the first explosion chamber, the second explosion chamber, and the third explosion chamber are coaxial, and the inner diameter of the first explosion chamber is larger than that of the second explosion chamber, and the inner diameter of the second explosion chamber is larger than that of the third explosion chamber;

[0009] The sub-explosion chamber combination includes a plurality of sub-explosion chambers arranged side by side in an upper and lower array, each of the sub-explosion chambers is a circular straight tubular structure, and the axis direction of each sub-explosion chamber is parallel to the main explosion chamber;

[0010] The sub-blasting chamber assembly is connected to the first blasting chamber of the main blasting chamber through a manifold;

[0011] The test section includes a charging test section, a first reducing section, a first test section, a second reducing section, a second test section, a third reducing section, a third test section and a fourth reducing section, which are arranged in sequence from left to right. The charging test section is a circular tubular structure. The first test section, the second test section and the third test section are all straight-wall circular arch tubular structures. The inner diameter of the arch of the first test section is smaller than that of the second test section, the inner diameter of the arch of the second test section is smaller than that of the third test section, and the inner diameter of the arch of the third test section is smaller than that of the fourth reducing section. The left end of the charging test section is connected to the third explosion chamber through the diaphragm mounting section, and the right end of the charging test section is connected to the first test section through the first reducing section; the right end of the first test section is connected to the second test section through the second reducing section, and the right end of the second test section is connected to the third reducing section. A reaction frame is provided between the right end of the third reducing section and the left end of the third test section, and the right end of the third test section is connected to the fourth reducing section. A reaction wall and a reaction gap adjustment bracket are provided at the tail end of the fourth reducing section, and the reaction gap adjustment bracket is located between the fourth reducing section and the reaction wall.

[0012] The charging test section is fixed on the ground by a reinforced concrete component, and the reinforced concrete component is covered at the middle position outside the charging test section; a charging station is provided inside the charging test section.

[0013] The diaphragm mounting section consists of a third reducer, a diaphragm and a fourth reducer. The left end of the third reducer is connected to the third explosion chamber, and the right end is connected to the fourth reducer through a diaphragm mounting flange. The right end of the fourth reducer is connected to the charging test section. The diaphragm is located between the third reducer and the fourth reducer and is fixedly covered on the diaphragm mounting flange.

[0014] In the sub-explosion chamber combination, the multiple sub-explosion chambers are fixedly connected into one body via the first flange.

[0015] The reaction frame includes a fixed support frame, a bracket, a vertical beam and a cross beam, wherein the fixed support frame is fixedly connected to the ground, and the bracket is fixedly connected to the upper surface of the fixed support frame; the bracket as a whole is a vertical plate frame structure, the right side of which is fixedly connected to the left end of the third test section, and the left side is provided with a panel, and a door opening for installing test equipment is provided in the middle of the panel, and a vertical beam is provided on each side of the door opening, and side panels are provided on the opposite sides of the two vertical beams; the panel above the door opening is fixedly connected to a cross beam, and the two ends of the cross beam are respectively connected to the upper ends of the two vertical beams, and a flat plate is provided on the lower surface of the cross beam; a bottom plate is provided on the fixed support frame below the door opening, and the side panels, flat plate, bottom plate and panel form a closed cavity that is only open on the left side.

[0016] The reaction gap adjustment bracket includes two vertical rods and multiple horizontal rods fixedly connected between the two vertical rods. The vertical rod at one end of the reaction gap adjustment bracket located in the third test section is provided with a mounting hole for connecting the test piece, and the vertical rod on the other side is in contact with the reaction wall.

[0017] The specific advantages of the present invention are as follows:

[0018] (1) The design of the load generation section is a three-section large explosion chamber structure, which can increase the initial energy density of the explosion chamber and improve energy utilization. When multiple explosion chambers are used in combination, a long-lasting nuclear explosion shock wave simulation can be formed. Using a single explosion chamber can provide explosion wave simulations of different energy levels.

[0019] (2) A test section explosion shock wave stitching technology was established, which can effectively increase the super shock wave pressure of the test section shock wave to meet the needs of high-level protective equipment testing;

[0020] (3) The segmented explosion chamber design further improves the suture speed and stability of the shock wave in the load generation section.

[0021] (4) This system can simulate all elements of the explosion shock wave environment. It is a fully functional explosion shock wave simulation test system with great military and academic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the sub-explosion chamber.

[0024] Figure 3 Schematic diagram of the test section.

[0025] Figure 4 This is a three-dimensional cross-sectional view of the charging test section.

[0026] Figure 5 It is a three-dimensional schematic diagram of the reaction frame.

[0027] Figure 6 A three-dimensional schematic diagram of the reaction gap adjustment bracket.

[0028] In the figure: 1, load generating section, 2, test section, 4, reaction frame, 5, reaction wall, 6, reaction gap adjustment bracket; 11, sub-blasting chamber assembly, 12, main blasting chamber, 13, diaphragm installation section; 111, sub-blasting chamber, 112, first flange, 1101, manifold; 121, first blasting chamber, 1201, first reducer, 122, second blasting chamber, 1202, second reducer, 123, third blasting chamber; 20, charging test section, 21, first test section, 22, second test section, 23, Three test sections, 201, first reducing section, 202, second reducing section, 203, third reducing section, 204, fourth reducing section, 25, reinforced concrete component, 26, steel frame, 27, charging station; 131, third reducing pipe, 132, diaphragm, 133, fourth reducing pipe; 41, fixed support frame, 42, bracket, 43, vertical beam, 44, horizontal beam, 61, horizontal bar, 62, vertical bar; 411, bottom plate, 421, panel, 431, side plate, 441, flat plate, 425, door opening. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention.

[0030] like Figures 1-6 As shown, a nuclear explosion shock wave simulation test system includes: a load generation section 1 and a test section 2; the load generation section 1 is composed of a sub-explosion chamber assembly 11, a main explosion chamber 12 and a diaphragm installation section 13 connected in sequence from left to right;

[0031] The main explosion chamber 12 includes a first explosion chamber 121, a first reducing tube 1201, a second explosion chamber 122, a second reducing tube 1202, and a third explosion chamber 123 connected in sequence from left to right; the first explosion chamber 121, the second explosion chamber 122, and the third explosion chamber 123 are all circular straight tube structures, the first explosion chamber 121, the second explosion chamber 122, and the third explosion chamber 123 are coaxial, and the inner diameter of the first explosion chamber 121 is larger than that of the second explosion chamber 122, and the inner diameter of the second explosion chamber 122 is larger than that of the third explosion chamber 123;

[0032] The sub-explosion chamber assembly 11 includes a plurality of sub-explosion chambers 111 arranged side by side in an upper and lower array. The sub-explosion chambers 111 are all circular straight tubular structures, and the axis direction of each sub-explosion chamber 111 is parallel to the main explosion chamber 12;

[0033] The sub-explosive chamber assembly 11 is connected to the first blasting chamber 121 of the main blasting chamber through a manifold 1101. Specifically, the manifold 1101 is a tubular structure with a closed steel plate at the right end. The closed steel plate is provided with an array of through holes corresponding to the sub-explosive chamber assembly 11. The right ends of the multiple sub-explosive chambers 111 are respectively connected to the corresponding through holes, and each sub-explosive chamber 111 is welded to the closed steel plate of the manifold 1101.

[0034] The test section 2 includes a charge test section 20, a first variable diameter section 201, a first test section 21, a second variable diameter section 202, a second test section 22, a third variable diameter section 203, a third test section 23 and a fourth variable diameter section 204, which are arranged from left to right. The charge test section 20 is a circular tubular structure, and the first test section 21, the second test section 22 and the third test section 23 are all straight-wall circular arch tubular structures. The inner diameter of the arch of the first test section 21 is smaller than that of the second test section 22, the inner diameter of the arch of the second test section 22 is smaller than that of the third test section 23, and the inner diameter of the arch of the third test section 23 is smaller than that of the fourth variable diameter section 204. The left end of the test section 20 is connected to the third explosion chamber 123 through the diaphragm mounting section 13, and the right end of the charging test section 20 is connected to the first test section 21 through the first reducing section 201; the right end of the first test section 21 is connected to the second test section 22 through the second reducing section 202, and the right end of the second test section 22 is connected to the third reducing section 203. A reaction frame 4 is provided between the right end of the third reducing section 203 and the left end of the third test section 23. A fourth reducing section 204 is connected to the right end of the third test section 23. A reaction wall 5 and a reaction gap adjustment bracket 6 are provided at the tail end of the fourth reducing section 204, and the reaction gap adjustment bracket 6 is located between the fourth reducing section 204 and the reaction wall 5. Specifically, the straight-wall circular arch tubular structure is composed of a bottom wall, vertical side walls and an arc-shaped arch that are solidly integrated. The horizontal bottom wall is connected to a vertical side wall on both sides, and the upper ends of the two vertical side walls are connected to the two ends of the arc-shaped arch respectively. This structure is the same as most underground tunnels. The inner diameter of the circular arch described in the present invention is the inner diameter of the arc-shaped arch.

[0035] In one embodiment of the present invention, the main blasting chamber 12 of the load generating section 1 is covered with a reinforced concrete structure and fixed to the ground by the reinforced concrete structure, while the sub-blasting chamber assembly 11 and the diaphragm mounting section 13 are arranged outside the reinforced concrete structure; Figure 3As shown, the first reducing section 201, the first testing section 21, the second reducing section 202, the second testing section 22, the third reducing section 203, the third testing section 23, and the fourth reducing section 204 of the testing section 2 are all fixed to the ground via a steel frame 26. The reaction wall 5 is a reinforced concrete wall, and a supporting bracket is further provided on the right side thereof. The supporting bracket is a reinforced concrete wall perpendicular to the reaction wall 5.

[0036] like Figure 4 As shown, the charged test section 20 is fixed to the ground by a reinforced concrete member 25, and the reinforced concrete member 25 is covered at the middle position of the outside of the charged test section 20; a charging station 27 is provided at the front end of the charged test section. The charge explosion at the charging station 27 can increase the super shock wave pressure of the shock wave of the test section, and realize the catching-up and suture of the explosion shock wave of the test section, thereby improving the energy density.

[0037] The diaphragm mounting section 13 is composed of a third reducer 131, a diaphragm 132 and a fourth reducer 133. The left end of the third reducer 131 is connected to the third explosion chamber 123, and the right end is connected to the fourth reducer 133 through a diaphragm mounting flange. The right end of the fourth reducer 133 is connected to the charging test section 20; the diaphragm 132 is located between the third reducer 131 and the fourth reducer 133, and is fixedly covered on the diaphragm mounting flange.

[0038] In the described sub-chamber assembly 11, multiple sub-chambers 111 are fixedly connected together by a first flange 112. There are multiple first flanges 112, each of which is a vertical plate-like structure with a mounting hole corresponding to the sub-chamber array. The sub-chambers 111 are inserted into the mounting holes of the first flanges 112 and fixedly connected to the openings of the mounting holes. In one embodiment of the present invention, the lower portion of each first flange 112 is connected to a steel base, which is connected to the ground. The upper portion of the steel base also supports the lower sub-chamber of the sub-chamber array.

[0039] The reaction frame 4 includes a fixed support frame 41, a bracket 42, a vertical beam 43 and a horizontal beam 44, wherein the fixed support frame 41 is fixedly connected to the ground, the upper surface of the fixed support frame 41 is covered with a steel plate 406, and the bracket 42 is fixedly connected to the upper surface of the fixed support frame 41; the bracket 42 is a vertical plate frame structure as a whole, the right side of which is fixedly connected to the left end of the third test section 23, and the left side is provided with a panel 421, and the middle of the panel 421 is provided with a door opening 425 for installing the test equipment. The door opening 425 A vertical beam 43 is provided on each side, and side panels 431 are provided on the opposite sides of the two vertical beams 43; the panel 421 above the door opening 425 is fixedly connected to a cross beam 44, and the two ends of the cross beam 44 are respectively connected to the upper ends of the two vertical beams 43, and a flat plate 441 is provided on the lower surface of the cross beam 44; a bottom plate 411 is provided on the fixed support frame 41 below the door opening 425, and the side panels 431, flat plate 441, bottom plate 411 and panel 421 form a closed cavity that is open only on the left side.

[0040] There are two reaction gap adjustment brackets 6, and the two reaction gap adjustment brackets 6 are respectively located on both sides of the tail end of the third test section 23. The reaction gap adjustment bracket 6 is composed of a vertical frame 61 and a top rod 62. The vertical frame 61 is a vertical frame structure perpendicular to the reaction wall 5 as a whole. One end of the vertical frame abuts against the reaction wall 5, and the other end is provided with multiple vertically arranged positioning mounting holes. The top rod 62 is threadedly connected to a positioning mounting hole, and the other end of the top rod 62 abuts against the third test section 23.

[0041] The principle of the present invention is as follows: the present invention has five charging areas, and the single charges in the first four charging areas simulate one explosion wave, and the full combination of the four can simulate a high-energy level nuclear explosion shock wave. The fifth charging area (i.e., the charging test section 20) is an auxiliary area, which further improves the explosion shock wave simulation form in the test section; the design of the load generating section is a three-section large explosion chamber structure, which can increase the initial energy density of the explosion chamber and improve the energy utilization rate. When multiple explosion chambers are used in combination, a long-lasting nuclear explosion shock wave simulation can be formed. A single explosion chamber can provide explosion wave simulations of different energy levels. The segmented explosion chamber design further improves the suture speed and stability of the shock wave in the load generating section; a test section explosion shock wave suture technology has been established, and the explosion of the test section charge can effectively increase the super shock wave pressure of the test section shock wave, thereby meeting the needs of high-level protective equipment testing.

[0042] The parts not described in detail in this invention are prior art.

Claims

1. A nuclear explosion shock wave simulation test system, comprising: The load generating section (1) and the test section (2) are characterized in that the load generating section (1) is formed by sequentially connecting a sub-explosion chamber assembly (11), a main explosion chamber (12) and a diaphragm installation section (13) from left to right; The main explosion chamber (12) comprises a first explosion chamber (121), a first reducing tube (1201), a second explosion chamber (122), a second reducing tube (1202) and a third explosion chamber (123) which are sequentially connected from left to right; the first explosion chamber (121), the second explosion chamber (122) and the third explosion chamber (123) are all circular straight tube structures, the first explosion chamber (121), the second explosion chamber (122) and the third explosion chamber (123) are coaxial, and the inner diameter of the first explosion chamber (121) is larger than that of the second explosion chamber (122), and the inner diameter of the second explosion chamber (122) is larger than that of the third explosion chamber (123); The sub-explosion chamber assembly (11) comprises a plurality of sub-explosion chambers (111) arranged in an array side by side in an upper and lower direction. The sub-explosion chambers (111) are all circular straight tubular structures, and the axial direction of each sub-explosion chamber (111) is parallel to the main explosion chamber (12). The sub-blasting chamber assembly (11) is connected to the first blasting chamber (121) of the main blasting chamber via a conduit (1101); The test section (2) includes a charge test section (20), a first variable diameter section (201), a first test section (21), a second variable diameter section (202), a second test section (22), a third variable diameter section (203), a third test section (23) and a fourth variable diameter section (204) arranged in sequence from left to right. The charge test section (20) is a circular tubular structure. The first test section (21), the second test section (22) and the third test section (23) are all straight-wall circular arch tubular structures. The inner diameter of the circular arch of the first test section (21) is smaller than that of the second test section (22). The inner diameter of the circular arch of the second test section (22) is smaller than that of the third test section (23). The inner diameter of the circular arch of the third test section (23) is smaller than that of the fourth variable diameter section (204). The left end of the charge test section (20) is connected to the third explosion chamber (123) through the diaphragm mounting section (13), and the right end of the charge test section (20) is connected to the first test section (21) through the first variable diameter section (201); the right end of the first test section (21) is connected to the second test section (22) through the second variable diameter section (202), and the right end of the second test section (22) is connected to the third variable diameter section (203). A reaction frame (4) is provided between the right end of the third variable diameter section (203) and the left end of the third test section (23). A fourth variable diameter section (204) is connected to the right end of the third test section (23). A reaction wall (5) and a reaction gap adjustment bracket (6) are provided at the tail end of the fourth variable diameter section (204), and the reaction gap adjustment bracket (6) is located between the fourth variable diameter section (204) and the reaction wall (5).

2. A nuclear explosion shock wave simulation test system according to claim 1, characterized in that: The charging test section (20) is fixed on the ground by a reinforced concrete component (25), and the reinforced concrete component (25) is wrapped around the middle position outside the charging test section (20); a charging station (27) is provided inside the charging test section.

3. A nuclear explosion shock wave simulation test system according to claim 1, characterized in that: The diaphragm mounting section (13) is composed of a third reducer (131), a diaphragm (132) and a fourth reducer (133). The left end of the third reducer (131) is connected to the third explosion chamber (123), and the right end is connected to the fourth reducer (133) through a diaphragm mounting flange. The right end of the fourth reducer (133) is connected to the charge test section (20). The diaphragm (132) is located between the third reducer (131) and the fourth reducer (133) and is fixedly covered on the diaphragm mounting flange.

4. A nuclear explosion shock wave simulation test system according to claim 1, characterized in that: In the sub-explosion chamber assembly (11), a plurality of sub-explosion chambers (111) are fixedly connected as one body via a first flange (112).

5. The nuclear explosion shock wave simulation test system according to claim 1, characterized in that: The reaction frame (4) includes a fixed support frame (41), a bracket (42), a vertical beam (43) and a horizontal beam (44), wherein the fixed support frame (41) is fixedly connected to the ground, and the bracket (42) is fixedly connected to the upper surface of the fixed support frame (41); the bracket (42) is a vertical plate frame structure as a whole, the right side of which is fixedly connected to the left end of the third test section (23), and the left side is provided with a panel (421), the middle of the panel (421) is provided with a door opening (425) for installing the test equipment, and a vertical beam (43) is provided on both sides of the door opening (425) , the two vertical beams (43) are each provided with a side plate (431) on the opposite side; the panel (421) above the door opening (425) is fixedly connected with a cross beam (44), the two ends of the cross beam (44) are respectively connected to the upper ends of the two vertical beams (43), and a flat plate (441) is provided on the lower surface of the cross beam (44); a bottom plate (411) is provided on the fixed support frame (41) below the door opening (425), and the side plates (431), the flat plate (441), the bottom plate (411), and the panel (421) form a closed cavity that is open only on the left side.

6. A nuclear explosion shock wave simulation test system according to claim 1, characterized in that: There are two reaction gap adjustment brackets (6), and the two reaction gap adjustment brackets (6) are respectively located on both sides of the tail end of the third test section (23). The reaction gap adjustment bracket (6) is composed of a vertical frame (61) and a top rod (62). The vertical frame (61) is a vertical frame structure perpendicular to the reaction wall (5) as a whole, one end of which is in contact with the reaction wall (5), and the other end is provided with a plurality of vertically arranged positioning mounting holes. The top rod (62) is threadedly connected to a positioning mounting hole, and the other end of the top rod (62) is in contact with the third test section (23).

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