Active fragment impact energy release quasi-static pressure testing device

Abstract

The utility model relates to the technical field of active fragment application, in particular to an active fragment impact energy release quasi-static pressure testing device which comprises a front target, a tank body, a rear target, a connecting pipe and a pressure sensor, and the front target, the tank body and the rear target form a sealed cavity; a plurality of groups of through holes are formed in the side wall of the tank body, and the distances between the plurality of groups of through holes and the rear target are different; one end of the connecting pipe is connected with the through hole, the other end of the connecting pipe is connected with the pressure sensor, and the connecting pipe is arranged in a bent mode. Invasion of fragments generated by collision and breaking of active fragments is effectively blocked, so that the risk that the sensor is damaged is reduced, and the service life of the sensor is prolonged; meanwhile, high-frequency shock wave pressure signals generated at the reaction moment of the active fragments can be filtered out, the purity of a quasi-static pressure curve is improved, and the accuracy of a test result is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to active fragment application technical field, especially relates to a kind of active fragment impact energy release quasi-static pressure testing device. BACKGROUND

[0002] In the field of modern military equipment and efficient damage material research, the damage power of warhead has been an important research direction. Active fragments, as a kind of metastable energetic structural material, have become a research hotspot in the field of efficient damage materials in recent years.

[0003] Active fragments are generally composed of two or more non-explosive solid materials, which are in a stable state at normal temperature and pressure, with considerable hardness and strength. When subjected to strong impact load, active fragments will undergo intense chemical reaction and release energy, producing combustion or explosion effect. Its unique time sequence combined damage mechanism of first penetration and then explosion greatly improves the damage power of warhead compared to traditional fragments.

[0004] Due to the variety of active fragments, there are significant differences in the damage capacity of active fragments with different formulations. Therefore, in the process of active fragment formulation design, it is particularly important to accurately evaluate the energy release and damage capacity of active fragments and then determine the optimal ratio. Quasi-static shock wave pressure, as an important indicator of quantifying the impact energy release of active fragments, is a manifestation of the thermal motion of gas generated by the temperature rise of active fragment reaction products and heat. Currently, the measurement of this indicator requires the use of a quasi-static pressure test container with a certain volume and a pressure sensor.

[0005] The existing quasi-static pressure testing device usually uses a quasi-closed container, which generally includes a front target and a rear target, and an observation window is provided on the container for recording the reaction process of active fragments. The pressure sensor is directly installed on the outer wall of the container. For example, the quasi-static pressure test container used by Chen Jin of Xi'an Institute of Modern Chemistry and Chen Xi of Nanjing University of Technology is cylindrical, and multiple pressure measurement points are located at the top of the container and distributed along the axial direction. This layout makes the pressure sensor only measure the quasi-static pressure at different axial positions, but cannot measure the quasi-static pressure at the same distance from the rear target in the ring direction, which makes it impossible to reliably check the ring direction pressure, thereby affecting the comprehensive understanding of the quasi-static pressure distribution of active fragment impact energy release.

[0006] In addition, the existing pressure sensor installation method is to directly install it on the side wall of the container. This installation method not only easily damages the sensor, but also cannot effectively filter out the instantaneous shock wave pressure, which affects the accuracy of the measurement results. At the same time, when replacing the front target plate, the front pressure ring connected with the shell needs to be removed, which is time-consuming and laborious, reducing the test efficiency.

[0007] In summary, the existing quasi-static pressure test device has many deficiencies in measuring the quasi-static pressure of active fragment impact energy release. In order to improve the experimental efficiency, protect the sensor, and improve the accuracy and reliability of the quasi-static pressure measurement, a new type of test device for measuring the quasi-static pressure of active fragment impact energy release is urgently needed. Utility model content

[0008] In order to solve the above technical problems in the prior art, the utility model provides a kind of active fragment impact energy release quasi-static pressure test device.

[0009] The technical scheme for solving the above technical problems of the utility model is as follows:

[0010] The utility model provides a kind of active fragment impact energy release quasi-static pressure test device, including front target, jar body, rear target, connecting pipe, pressure sensor, the front target, jar body and rear target form sealed cavity;Multiple groups of through holes are set in the lateral wall of the jar body, and the distance of multiple groups of through holes from the rear target is different;One end of the connecting pipe is connected with the through hole, and the other end is connected with the pressure sensor, and the connecting pipe is bent and set.

[0011] The active fragment impact energy release quasi-static pressure test device provided by the utility model is used to measure the quasi-static pressure of active fragment impact energy release. The active fragment is broken and released by the front target and the rear target, and the generated quasi-static pressure is transmitted by the connecting pipe and collected by the pressure sensor. By installing the bent connecting pipe between the through hole and the pressure sensor, the invasion of the fragments generated by the impact and breakage of the active fragment can be effectively blocked, thereby reducing the risk of damage to the sensor and improving the service life of the sensor. At the same time, high-frequency shock wave pressure signals generated by the active fragment reaction in an instant can also be filtered out, the purity of the quasi-static pressure curve is improved, and the accuracy of the test results is improved.

[0012] On the basis of the above technical scheme, the utility model can also be improved as follows:

[0013] Further, the connecting pipe comprises at least a first connecting pipe and a second connecting pipe connected thereto, one end of the first connecting pipe away from the second connecting pipe is connected to the pressure sensor, and the included angle between the first connecting pipe and the second connecting pipe is greater than 0 degrees and less than 180 degrees.

[0014] Further, the connecting pipe further comprises a third connecting pipe, the third connecting pipe comprises a first end portion and a second end portion, the first end portion is connected to the through hole, the second end portion is connected to the second connecting pipe, and the inner diameter of the first end portion is greater than the inner diameter of the second end portion.

[0015] The beneficial effects of the further technical scheme are that the one end of the connecting pipe connected with the tank body is provided with an excessive taper hole, and the inner diameter of the one end of the excessive taper hole connected with the through hole is large, so that the air intake is increased, and the accuracy of the test result is improved.

[0016] Further, each group of through holes includes a through hole one and a through hole two, the through hole one and the through hole two are the same distance from the rear target, and the through hole one and the through hole two are distributed at intervals in the circumferential direction of the tank body.

[0017] The beneficial effects of the further technical scheme are that the through hole one and the through hole two are arranged at intervals on the same circumference of the tank body, two pressure sensors can be arranged on the same circumference of the tank body, that is, two pressure sensors are arranged at a distance from the rear target in the circumferential direction to obtain circumferential pressure at the same distance from the rear target, and the accuracy and reliability of the pressure data are ensured by double measurement points and mutual correction.

[0018] Further, the front target includes a front compression ring, an aluminum plate and a front end cover arranged in sequence, the front end cover is detachably connected with the tank body, and the front compression ring and the aluminum plate are detachably connected to the front end cover.

[0019] The beneficial effects of the further technical scheme are that when measuring the quasi-static pressure of active fragments impacted by the active fragments, the active fragments impact the rear target and break after penetrating the aluminum plate, the aluminum plate is used to simulate the target shell and seal the test container, the front target is composed of the front compression ring, the aluminum plate and the front end cover, the size of the front compression ring and the aluminum plate is small, and the two are detachably connected to the front end cover, the size and thickness of the front end cover is large, and the front end cover is detachably connected to the tank body; the aluminum plate needs to be replaced before each experiment to ensure the air tightness of the test device, the front end cover is kept stationary, and the front compression ring is removed to replace only the aluminum plate with small size, so that the work intensity can be effectively reduced and the experimental efficiency can be improved.

[0020] Further, sealing elements are arranged between the front compression ring and the aluminum plate, between the aluminum plate and the front end cover, and between the front end cover and the tank body.

[0021] The beneficial effects of the further technical scheme are that the air tightness of the sealed cavity of the test device is ensured, the gas is prevented from leaking out through the gap at the initial moment of energy release of the active fragments, and the accuracy of the test result is improved.

[0022] Further, an observation port is arranged in the circumferential direction of the tank body, a bulletproof glass is arranged on the observation port, and a sealing element is arranged between the observation port and the bulletproof glass.

[0023] The beneficial effects of the further technical scheme are that the reaction process of active fragment impact energy release can be recorded by high-speed photography through the observation port, the sealing element is arranged between the observation port and the bulletproof glass, the air tightness of the sealed cavity of the test device is ensured, the gas is prevented from leaking out through the gap at the initial moment of active fragment energy release, and the accuracy of the test result is improved.

[0024] Further, the rear target is provided with a boss on the side close to the sealed cavity.

[0025] The beneficial effects of the further technical scheme are that the boss can ensure that the active fragments entering the test device can effectively impact the rear target and release energy, and the thickness of the rear target can be increased, so that the rear target can withstand multiple active fragment impacts without being seriously damaged, the replacement frequency of the rear target is reduced, and the service life of the test device is increased.

[0026] Further, the inner diameter of the tank body is 200-300 mm, the length is 400-500 mm, and the wall thickness is not less than 10 mm; the rear target is detachably connected with the tank body, and a sealing element is arranged between the rear target and the tank body.

[0027] The beneficial effects of the further technical scheme are that the small volume of the test device can appropriately amplify the quasi-static pressure signal, and the weight of the test device can be reduced, so that the test device is convenient to move; the rear target is detachably connected with the tank body, so that the rear target is convenient to replace; the sealing element is arranged between the rear target and the tank body, so that the air tightness of the sealed cavity of the test device is ensured, the gas is prevented from leaking out through the gap at the initial moment of active fragment energy release, and the accuracy of the test result is improved.

[0028] Further, the sealing cover is arranged on the through hole not connected with the connecting pipe.

[0029] The beneficial effects of the further technical scheme are that when the number of installed pressure sensors is small during the experiment, the sealing cover is needed to seal the excess through holes, so as to ensure the air tightness of the test device.

[0030] Compared with the prior art, the test device has the following technical effects:

[0031] The quasi-static pressure test device for active fragment impact energy release provided by the utility model, active fragments impact the rear target and break and release energy after penetrating the aluminum plate, and the generated quasi-static pressure is propagated through the connecting pipe and collected by the pressure sensor; the connecting pipe arranged between the through hole and the pressure sensor can effectively block the invasion of the fragments generated by the impact and break of the active fragments, so as to reduce the risk of damage to the sensor and improve the service life of the pressure sensor; at the same time, the high-frequency shock wave pressure signal generated in the reaction moment of the active fragments can be filtered out, the purity of the quasi-static pressure curve is improved, and the accuracy of the test result is improved.

[0032] By designing the front target to be split into three parts, namely a front end cover with large size and heavy weight, an aluminum plate with small size and light weight, and a front compression ring, since the aluminum plate is the impact surface, a new aluminum plate needs to be replaced after the experiment to ensure the sealing of the test device, and when replacing the target plate, only the front compression ring needs to be removed and the aluminum plate can be replaced, which is simple and efficient, and can also save costs;

[0033] By increasing the sealing grooves and sealing rings between the front and rear targets and the tank body, the observation port and the bulletproof glass, and the front end cover and the front compression ring, the air tightness of the test device before the impact of the active fragment is ensured as much as possible, gas leakage through the gap is avoided, and the accuracy of the test results is improved;

[0034] By opening a plurality of through holes in the side wall of the tank body, quasi-static pressure measurement at different positions in the axial direction of the tank body can be realized to study the pressure change at different positions, and quasi-static pressure measurement at the same distance from the rear target can be realized. The ring position of the tank body, and the double measurement points are corrected to each other to ensure the accuracy and reliability of the pressure data. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A cross-sectional view of the active fragment impact energy release quasi-static pressure test device according to an embodiment of the present application is shown.

[0036] Figure 2 A front view of the active fragment impact energy release quasi-static pressure test device according to an embodiment of the present application is shown.

[0037] Figure 3 A side view of the active fragment impact energy release quasi-static pressure test device according to an embodiment of the present application is shown.

[0038] Figure 4 A cross-sectional view of the connecting pipe is shown.

[0039] Figure 5 A front view of the sealing cover is shown.

[0040] Figure 6 A top view of the sealing cover is shown.

[0041] REFERENCE NUMERALS:

[0042] 1, front compression ring; 2, aluminum plate; 3, front end cover; 4, tank body; 5, through hole; 6, rear target; 7, observation port compression ring; 8, observation port; 9, bulletproof glass; 10, connecting pipe; 11, first connecting pipe; 12, second connecting pipe; 13, third connecting pipe; 14, boss; 15, sealing cover; 16, sensor mounting cavity. DETAILED DESCRIPTION

[0043] The following embodiments of the present application will be described in detail with specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the disclosure. Although the description of the present application will be introduced together with the preferred embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0044] Referring to Figures 1-6 An active fragment impact energy release quasi-static pressure test device, comprising a front target, a tank body 4, a rear target 6, a connecting pipe 10, a pressure sensor, the front target, the tank body 4 and the rear target 6 form a sealed cavity; three groups of through holes 5 are arranged on the side wall of the tank body 4, and the distances from the three groups of through holes 5 to the rear target 6 are different; one end of the connecting pipe 10 is connected with the through hole 5, and the other end is connected with the pressure sensor, and the connecting pipe 10 is arranged in a bent mode; specifically, the connecting pipe 10 comprises a first connecting pipe 11, a second connecting pipe 12 and a third connecting pipe 13 connected in sequence, the included angle between the first connecting pipe 11 and the second connecting pipe 12 is 120 degrees, the third connecting pipe 13 comprises a first end portion and a second end portion, the first end portion is connected with the through hole 5, and the second end portion is connected with the second connecting pipe 12, and the inner diameter of the first end portion is greater than that of the second end portion; each group of through holes 5 comprises a through hole one and a through hole two, the distances from the through hole one and the through hole two to the rear target 6 are the same, and the through hole one and the through hole two are distributed in a circumferential direction of the tank body 4; the front target comprises a front pressing ring 1, an aluminum plate 2 and a front end cover 3 arranged in sequence, the front end cover 3 is detachably connected with the tank body 4, and the front pressing ring 1 and the aluminum plate 2 are detachably connected on the front end cover 3; an observation port 8 is arranged on the circumference of the tank body 4, a bulletproof glass 9 is arranged on the observation port 8, and a boss 14 is arranged on the side of the rear target 6 close to the sealed cavity; sealing elements are arranged between the front pressing ring 1 and the aluminum plate 2, between the aluminum plate 2 and the front end cover 3, between the front end cover 3 and the tank body 4, between the tank body 4 and the rear target 6, and between the bulletproof glass 9 and the observation port 8, the sealing element comprises a sealing ring groove and a sealing ring, the sealing ring is made of butadiene rubber, the sealing ring groove and the sealing ring are matched to ensure the air tightness of the test device and prevent gas from leaking through the gap at the initial moment of active fragment energy release.

[0045] Referring to Figure 4The first connecting pipe 11 is provided with a sensor mounting cavity 16 at one end away from the second connecting pipe 12, and the sensor mounting cavity 16 is used for mounting a pressure sensor.

[0046] When the number of pressure sensors to be installed is less than the number of reserved through holes 5, the through holes 5 need to be plugged by sealing covers 15, which are installed on the through holes 5 of the tank body 4 not connected with the connecting pipes 10 through threads.

[0047] When the active fragment impact energy release quasi-static pressure testing device is used to test the impact energy release quasi-static pressure of the active fragment, the aluminum plate 2 is used to simulate a target shell, the active fragment enters the sealed cavity after penetrating the aluminum plate 2, breaks and releases energy after impacting the boss 14 of the back target 6, the generated quasi-static pressure is propagated through the connecting pipe 10 and collected by the pressure sensor, and thus the test is completed.

[0048] The tank body 4 is made of 45# steel and has a cylindrical shape, an inner diameter of 200-300 mm, a length of 400-500 mm, and a wall thickness of not less than 10 mm, preferably, the inner diameter is Φ220 mm, the length is 420 mm, the volume is 16 L, and the thickness is 10 mm.

[0049] The aluminum plate 2 is made of 2A12 aluminum and has a diameter of Φ160-220 mm, which is determined by comprehensively considering the ballistic gun impact deviation and installation performance, preferably, the diameter is Φ210 mm, the thickness of the aluminum plate 2 is generally 0.5-6 mm, and preferably, the thickness is 2 mm; the front pressure ring 1 is made of 45# steel and has the same outer diameter as the aluminum plate 2, i.e., Φ210 mm, and the inner diameter has no special requirements, but needs to meet the requirements of the ballistic gun impact deviation and sealing performance, preferably, the inner diameter is Φ130 mm; the thickness of the front pressure ring 1 is greater than or equal to 10 mm, and preferably, the thickness is 10 mm; the front end cover 3 is made of 45# steel and is connected with the tank body 4 through bolts and nuts, the outer diameter of the front end cover 3 is the same as the outer diameter of the flange of the tank body 4, and in the embodiment, the outer diameter is preferably Φ340 mm, the inner diameter is the same as the inner diameter of the front pressure ring 1, i.e., Φ130 mm, and the thickness is generally greater than or equal to 10 mm, and in the embodiment, the thickness is preferably 10 mm.

[0050] The front pressure ring 1 and the aluminum plate 2 are installed on the front end cover 3 through the internal hexagonal bolts, and a countersunk hole needs to be designed on the front pressure ring 1, the depth of the countersunk hole is preferably 6 mm, and the diameter and length of the internal hexagonal bolt need to be determined according to the actual thickness of the aluminum plate, and in the embodiment, the internal hexagonal bolt is preferably an M10 bolt with a length of 11 mm; the connecting bolt between the front end cover 3 and the tank body 4 needs to be determined according to the size of the flange of the tank body 4, and in the embodiment, the bolt is preferably an M18 bolt with a length of 45 mm.

[0051] The front pressing ring 1 and the aluminum plate 2 are small in size and are installed on the front end cover 3 through hexagon bolts, the front end cover 3 is large in size and is connected to the tank body 4 through bolts and nuts; the aluminum plate 2 needs to be replaced before each experiment to ensure the air tightness of the test device, when the aluminum plate 2 is replaced, the front end cover 3 is kept stationary, the front pressing ring 1 is removed, and only the small-sized aluminum plate 2 is replaced, thereby reducing the working intensity and improving the experimental efficiency.

[0052] The rear target 6 is made of ultra-high strength steel, has the same outer diameter as the flange outer diameter of the tank body 4, i.e. Φ340 mm, and has a thickness greater than or equal to 20 mm, preferably 28 mm in the embodiment; the large thickness of the rear target 6 can withstand multiple active fragment impacts without serious damage, thereby reducing the replacement frequency of the rear target 6 and increasing the service life of the test device; the diameter of the boss 14 of the rear target 6 is selected according to the inner diameter of the tank body 4, and is preferably Φ200 mm in the embodiment, which can ensure that the active fragments entering the test device can effectively impact the rear target 6 and release energy.

[0053] The rear target 6 and the tank body 4 are detachably connected through connecting bolts, and the connecting bolts between the rear target 6 and the tank body 4 need to be determined according to the size of the flange of the tank body 4, and are preferably M18 bolts with a length of 45 mm in the embodiment.

[0054] The inner diameter of the observation port 8 is generally Φ100-150 mm, and is preferably Φ120 mm in the embodiment; the bulletproof glass 9 is detachably installed on the observation port 8 through the observation port pressing ring 7, specifically, the bulletproof glass 9 is connected to the observation port 8 through hexagon bolts, and the observation port 8 is sealed on both sides of the bulletproof glass 9 by using sealing elements, specifically, sealing ring grooves are processed on the pressing ring 7 and the observation port 8, and the observation port 8 is sealed by cooperating the sealing ring grooves with the sealing rings, thereby ensuring the air tightness of the test device.

[0055] The outer diameter of the observation port pressing ring 7 is the same as the flange outer diameter of the observation port 8, and is preferably Φ180 mm in the embodiment, the inner diameter is the same as the inner diameter of the observation port 8, i.e. Φ120 mm, and the thickness is 10 mm; the diameter of the bulletproof glass 9 is determined by the inner diameter of the observation port 8 and the observation port pressing ring 7, and is preferably Φ140 mm in the embodiment, and the thickness is 10 mm; a countersunk hole needs to be designed on the diameter of the observation port pressing ring 7, the depth of the countersunk hole is preferably 6 mm in the embodiment, and the diameter and length of the hexagon bolt need to be selected according to the thickness of the bulletproof glass 9, and are preferably M10 and 18 mm in length in the embodiment.

[0056] The position of the observation port 8 on the tank body 4 is fixed, i.e. at the middle position of the tank body 4, and the shooting direction needs to be adjusted according to the light source and space position on site when high-speed photography is performed, at this time, the positions of the rear target 6 and the front target can be exchanged to realize the adjustment of the shooting direction.

[0057] The three through holes 5 are arranged on the top of the tank body 4 and the side opposite to the observation port 8, that is, three through holes one and three through holes two are arranged, the spacing between the three through holes one is 100 mm along the axial direction of the tank body 4, the spacing between the three through holes two is 100 mm, and the diameter of the through hole 5 is preferably M24; the test device can install multiple pressure sensors to obtain the quasi-static pressure distribution at different positions; multiple pressure sensors can be installed in the same experiment to obtain the circumferential pressure at the same distance from the rear target 6, realize double-measurement-point measurement and mutual correction to ensure the accuracy and reliability of the pressure data.

[0058] The connecting pipe 10 is a hollow pipe with an angle, and the material is stainless steel, the angle is preferably 120 degrees in the embodiment, the inner diameter is Φ10 mm, the outer part of the connecting end of the tank body 4 is a M24 thread, an excessive taper is designed at the joint to increase the air inlet amount, and the inner thread of the connecting end of the pressure sensor is determined according to the size of the pressure sensor.

[0059] The connecting pipe 10 with an angle can block the invasion of active fragments, thereby reducing the risk of damage to the pressure sensor and prolonging the service life of the sensor; at the same time, the connecting pipe 10 with an angle can effectively filter out the high-frequency shock wave pressure signal generated in the active fragment reaction moment, and improve the purity of the quasi-static pressure curve.

[0060] The sealing cover 15 is made of stainless steel, and the outer thread diameter is M24 and the length is 8 mm in the embodiment; when the number of the installed pressure sensors is less than the number of the through holes 5 during the experiment, the sealing cover 15 is used to seal the excess through holes 5 to ensure the air tightness of the test container.

[0061] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An active fragment impact energy release quasi-static pressure testing device, characterized in that, The application relates to a pressure sensor device, which comprises a front target, a tank body, a rear target, a connecting pipe and a pressure sensor, wherein the front target, the tank body and the rear target form a sealed cavity; a plurality of groups of through holes are arranged on the side wall of the tank body, and the distances from the through holes to the rear target are different; one end of the connecting pipe is connected with the through holes, and the other end is connected with the pressure sensor; and the connecting pipe is arranged in a bending mode.

2. The active fragment impact energy release quasi-static pressure test device of claim 1, wherein, The connecting pipe comprises a first connecting pipe and a second connecting pipe which are connected with each other, one end of the first connecting pipe which is far away from the second connecting pipe is connected with the pressure sensor, and the included angle between the first connecting pipe and the second connecting pipe is greater than 0 degrees and smaller than 180 degrees.

3. The active fragment impact energy release quasi-static pressure test device of claim 2, wherein, The connecting pipe further comprises a third connecting pipe, the third connecting pipe comprises a first end portion and a second end portion, the first end portion is connected with the through holes, and the second end portion is connected with the second connecting pipe; and the inner diameter of the first end portion is greater than that of the second end portion.

4. The active fragment impact energy release quasi-static pressure test device of claim 1, wherein, Each group of through holes comprises a first through hole and a second through hole, the distances from the first through hole and the second through hole to the rear target are the same, and the first through hole and the second through hole are arranged in a circumferential interval mode on the tank body.

5. The active fragment impact energy release quasi-static pressure test device of claim 1, wherein, The front target comprises a front pressing ring, an aluminum plate and a front end cover which are arranged in sequence, the front end cover is detachably connected with the tank body, and the front pressing ring and the aluminum plate are detachably connected on the front end cover.

6. The active fragment impact energy release quasi-static pressure test device of claim 5, wherein, Sealing members are arranged between the front pressing ring and the aluminum plate, between the aluminum plate and the front end cover, and between the front end cover and the tank body.

7. The active fragment impact energy release quasi-static pressure test device of claim 1, wherein, An observation opening is arranged on the circumference of the tank body, a bulletproof glass is arranged on the observation opening, and a sealing member is arranged between the observation opening and the bulletproof glass.

8. The active fragment impact energy release quasi-static pressure test device of claim 1, wherein, A boss is arranged on the side of the rear target which is close to the sealed cavity.

9. The active fragment impact energy release quasi-static pressure test device of claim 1, wherein, The inner diameter of the tank body is 200-300 mm, the length is 400-500 mm, and the wall thickness is not smaller than 10 mm; the rear target is detachably connected with the tank body, and a sealing member is arranged between the rear target and the tank body.

10. The active fragment impact energy release quasi-static pressure test device of claim 1, wherein, A sealing cover is further arranged on the through hole which is not connected with the connecting pipe.

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