CN116046316A - Explosion experiment device in simulation multi-size guard gate - Google Patents

Explosion experiment device in simulation multi-size guard gate Download PDF

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Publication number
CN116046316A
CN116046316A CN202211521610.7A CN202211521610A CN116046316A CN 116046316 A CN116046316 A CN 116046316A CN 202211521610 A CN202211521610 A CN 202211521610A CN 116046316 A CN116046316 A CN 116046316A
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China
Prior art keywords
test
main body
door
sealing
protective door
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CN202211521610.7A
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Chinese (zh)
Inventor
吴晨伟
张国凯
王振
姚箭
宋先钊
马维嘉
刘举
蒋欣利
姜龙
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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Priority to CN202211521610.7A priority Critical patent/CN116046316A/en
Publication of CN116046316A publication Critical patent/CN116046316A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/08Shock-testing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention discloses an experimental device for simulating inner explosion of a multi-size protective door, which comprises: the test system comprises a sealing main body structure, a test main body protective door and a test system; the sealing main body structure comprises an explosion load generation chamber, a sealing structure and a charging bracket; the test main body protective door comprises a protective door main body and a door frame, wherein bolt holes which are matched with a sealing structure are formed in the longitudinal direction of the door frame; the test system comprises: displacement test unit, acceleration test unit, strain test unit, quasi-static pressure test unit and shock wave test unit. According to the invention, by arranging the structure, the detachable sealing structure and the charging mode which are suitable for the protective doors with different sizes, the dynamic response of the multi-size civil air defense protective doors vertically installed under the actions of the nuclear explosion load and the normal weapon implosion load during long holding is simulated, the problems of inconvenient study on the dynamic response and the destruction rules of the protective doors with different sizes are solved, the test efficiency is improved, and the test cost is reduced.

Description

Explosion experiment device in simulation multi-size guard gate
Technical Field
The invention relates to the technical field of explosion and civil air defense protection, in particular to an experimental device for simulating inner explosion of a multi-size protection door.
Background
Shock waves are one of the important destructive elements of an explosion and are the content of interest in the field of combat protection. Different ammunition and different explosive environments produce different loads. For a nuclear explosion, the load it produces can be considered a long-lasting planar shock wave. For conventional weapons that are free space explosive, the pressure damage may be considered to be spherical shock wave damage. Whereas if a conventional weapon explosion occurs in the confined space, such as an earth-boring weapon earth-boring attack, and an accidental explosion occurs in the confined space. Unlike free space explosions, the shock wave generated by the explosion is continuously reflected in the confined space, which can cause the shock wave to have a plurality of overpressure peaks. The explosion products which do not fully react with the explosion are mixed with the air in the constraint space to generate a post-combustion effect, so that the pressure of the shock wave is continuously enhanced. And the heat and explosion products in the confined space tend to be difficult to dissipate in time, thereby also creating a quasi-static pressure over time.
The protective door is a common structure in the building, and has the body and shadow of the protective door from underground protection work, civil air defense engineering in cities to warship cabins in the ocean. These underground works and warships are all faced with various explosive load threats. Therefore, it is important to simulate the dynamic response and the damage rule of the large-size and multi-size protective door under different loads.
At present, for large-size, multi-size protective door power response test systems are not common, the power response generated by the conventional weapon explosion load is simulated, the load is single, the test protective door is single in specification, and the protective door is horizontally placed, and the weight of the protective door can reach hundreds of kilograms to several tons, so that the power response is influenced by the weight of the protective door. The device can make up the defects, truly simulate the dynamic response of the protective door under the actions of nuclear explosion and normal weapon internal explosion release load under the actual installation condition, and further analyze the damage rule.
Disclosure of Invention
Aiming at the lack of the current test technology and test system for simulating the dynamic response and the destruction rules of the multi-size civil air defense protective door under the action of multi-type loads, the invention provides the test system capable of simulating the dynamic response and the destruction rules of the different-size civil air defense protective door under the actions of plane wave loads during the long-duration of nuclear explosion and normal weapon internal explosion venting loads.
The invention provides an experimental device for simulating inner explosion of a multi-size protective door, which is characterized in that: comprising the following steps: the test system comprises a sealing main body structure, a test main body protective door and a test system;
the sealing main body structure comprises an explosion load generation chamber, a sealing structure and a charging bracket; the explosion load generation chamber is of a rectangular structure, a wall body of the explosion load generation chamber is provided with a door opening and grooves with the same height as the door opening, the size of the door opening is matched with that of the test main body protective door, a plurality of rows of first threaded holes are symmetrically arranged in the grooves at two sides by taking a long axis of the door opening as a central axis, and second threaded holes are arranged at the upper edge and the lower edge of the grooves; the sealing structure is arranged between the door opening and the test main body protective door and is connected with the wall body through a threaded hole in the wall body; the explosive loading supports are arranged on two sides of the wall body opposite to the explosive load generating chamber;
the test main body protective door comprises a protective door main body and a door frame, wherein bolt holes which are matched with a sealing structure are formed in the longitudinal direction of the door frame;
the test system comprises: displacement test unit, acceleration test unit, strain test unit, quasi-static pressure test unit and shock wave test unit.
Furthermore, the explosion load generation chamber is cast by steel fiber concrete.
Further, a sensor mounting hole, a pressure relief hole and a threading hole are also formed in the wall body of the explosion load generation chamber; the sensor mounting hole is high with test body guard gate center is co-altitude, the through wires hole sets up in the corner department of wall body, and the explosion under different pressure release speeds is simulated to the shutoff pressure release hole of accessible different degree during the test.
Further, the sealing structure comprises sealing heightening blocks, transverse sealing strips and longitudinal sealing strips, wherein the number of the sealing heightening blocks, the transverse sealing strips and the longitudinal sealing strips is two; the sealing gasket block is provided with a first connecting hole, and the first connecting hole is arranged in a manner of being matched with the first threaded hole; the cross section of the transverse sealing strip is L-shaped, the transverse sealing strip is arranged at the upper edge and the lower edge of the door, and is provided with a second connecting hole which is arranged in a way of being matched with the second threaded hole; the section of the longitudinal sealing strip is L-shaped; the sealing heightening block and the longitudinal sealing strip are sequentially connected with the first threaded hole through the first connecting hole and the third connecting hole through bolts, and the sealing heightening block is used for heightening the longitudinal sealing strip.
Further, the iron wire is arranged in the middle of the charging support which is arranged in the opposite direction, and two ends of the iron wire are connected with the charging support, so that the iron wire is in a straightening state.
Further, the displacement testing unit of the testing system is 2 displacement sensors, the head of each displacement sensor is connected with the protective door of the testing main body through a universal head, and the tail end of each displacement sensor is connected with the wall of the explosion load generation chamber through a metal bracket; the strain testing unit comprises 3 groups of strain gages which are fixedly arranged on the outer surface of the protective door of the test main body, the acceleration testing unit comprises 3 acceleration sensors, and the strain gages and the acceleration sensors are respectively arranged at the center, the 1/4 position and the 1/4 position of the long shaft of the protective door of the test main body in a transverse and longitudinal mode; the static pressure testing unit comprises a quasi-static pressure sensor which is arranged at one side of the door opening; the shock wave pressure testing unit comprises a wall surface pressure sensor which is arranged on the wall body of the explosion load generating chamber opposite to the protective door of the test main body.
Further, one of the 2 displacement sensors is arranged at the center of the protective door of the test main body, and the other is arranged at the 1/4 position of the long shaft of the protective door of the test main body.
Further, the iron wire loading mode comprises plane loading and concentrated loading.
Further, the sealing gasket block, the transverse sealing strips and the longitudinal sealing strips are all made of rubber materials.
The invention has the following beneficial effects: according to the invention, by arranging the structure, the detachable sealing structure and the charging mode which are suitable for the protective doors with different sizes, the dynamic response of the multi-size civil air defense protective doors vertically installed under the actions of the nuclear explosion load and the normal weapon implosion load during long holding is simulated, the problems of inconvenient study on the dynamic response and the destruction rules of the protective doors with different sizes are solved, the test efficiency is improved, and the test cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIGS. 1.1-1.3 are schematic views of the overall structure of the present invention.
Fig. 2.1 is a schematic diagram of a simulated nuclear explosion of the planar charge scheme of the present invention.
Fig. 2.2 is a schematic diagram of simulated implosion for a concentrated charge scheme of the present invention.
FIG. 3 is a schematic diagram of the arrangement of the test system of the present invention.
Figures 4.1-4.5 are graphs of the dynamic response and load testing of the present invention.
In the figure: 1. an explosive load generation chamber; 2. a door opening; 3. a groove; 4. a protective door body; 5. a door frame; 6. a sensor mounting hole; 7. a pressure relief hole; 8. a threading hole; 9. a seal elevating block; 10. a transverse sealing strip; 11. a longitudinal sealing strip; 12. a charge holder; 13. a first threaded hole; 14. bolt holes; 15. a first connection hole; 16. a displacement sensor; 17. a strain gage; 18. an acceleration sensor; 19. an iron wire; 20. a drug block; 21. a detonator; 22. detonating cord.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in the figure, this embodiment is a simulated multi-size protection door inner explosion experiment device, including: sealing body structure, test body guard gate 4 and test system.
The sealing body structure comprises an explosion load generation chamber 1, a sealing structure and a charging bracket 12.
The explosion load generation chamber 1 is rectangular structure, adopts steel fiber concrete disposable pouring to form, is equipped with door opening 2 on its wall body, with the recess 3 of door opening 2 highly the same, the degree of depth of recess 3 is enough to test main part guard gate 4 in explosion test required space of warp, door opening 2 size is reserved according to the relevant standard of test main part guard gate 4 size country, and this embodiment is with highly being 2.0m, and width is 0.8m as the example, both sides use door opening 2 major axis as axis symmetry arrangement multirow first screw hole 13 in the recess 3, its upper and lower edge sets up the second screw hole, the screw hole is used for connecting wall, shutoff structure and target personnel protection guard gate. The explosion load generation chamber 1 is characterized in that a sensor mounting hole 6, a pressure relief hole 7 and a threading hole 8 are further formed in the wall of the explosion load generation chamber 1, the height of the sensor mounting hole 6 is equal to the center of the test main body protective door 4, and the threading hole 8 is formed in the corner of the wall and is used for threading an initiating wire.
The sealing structure is arranged between the door opening 2 and the test main body protective door 4, is connected with the wall body through a threaded hole in the wall body and is used for blocking gaps between the protective doors with different sizes and the wall body. The sealing structure comprises a sealing heightening block 9, a transverse sealing strip 10 and a longitudinal sealing strip 11, wherein the number of the sealing heightening block is two, and the sealing heightening block is made of rubber; the sealing gasket block 9 is provided with a first connecting hole 15, and the first connecting hole 15 and the first threaded hole 13 are arranged in a matching way; the cross section of the transverse sealing strip 10 is L-shaped, the transverse sealing strip is arranged at the upper edge and the lower edge of the door, and is provided with a second connecting hole which is arranged in a way of being matched with the second threaded hole; the section of the longitudinal sealing strip 11 is L-shaped, the sealing heightening block 9 and the longitudinal sealing strip 11 are sequentially connected with the first threaded hole 13 through the first connecting hole 15 and the third connecting hole in a bolt mode, and the sealing heightening block 9 is used for heightening the longitudinal sealing strip 11.
The explosive loading support 12 is arranged on two sides of a wall body opposite to the explosive load generating chamber 1, an iron wire 19 is arranged in the middle of the wall body, and two ends of the iron wire 19 are connected with the explosive loading support 12, so that the iron wire 19 is in a straightening state. Detonating cord 22 may be disposed on wire 19 for planar charging; the drug blocks 20 can also be arranged on the iron wires 19 for concentrated drug loading. The plane charge is used for simulating the uniform load of the nuclear explosion during long duration, and the concentrated charge is used for simulating the implosion load of a conventional weapon.
The test main body protective door 4 comprises a protective door main body and a door frame 5, wherein bolt holes 14 which are matched with a sealing structure are longitudinally formed in the door frame 5.
The test system comprises: displacement test unit, acceleration test unit, strain test unit, quasi-static pressure test unit and shock wave test unit. The displacement test unit is 2 displacement sensors 16, the head of the displacement sensor 16 is connected with the test main body protective door 4 through a universal head, the tail end of the displacement sensor is connected with the explosion load generation chamber 1 through a metal bracket, and one of the 2 displacement sensors 16 is arranged at the center of the test main body protective door 4, and the other is arranged at the long shaft 1/4 of the test main body protective door 4. The strain testing unit comprises 3 groups of strain pieces 17 which are fixedly arranged on the outer surface of the protective door 4 of the test main body and used for measuring surface strain data of the protective door under the action of implosion load and analyzing the damage rule of the protective door. The acceleration test unit comprises 3 acceleration sensors 18, and the strain gauge 17 and the acceleration sensors 18 are respectively arranged at the center, the 1/4 position and the 1/4 position of the long shaft of the test main body protective door 4 in a transverse direction and a longitudinal direction. The response data collected by the displacement test unit, the acceleration test unit and the strain test unit reflect the mechanical properties under the action of the explosion load of the protective door together, so that the damage rule of the protective door can be further researched. The static pressure testing unit comprises a quasi-static pressure sensor which is arranged at one side of the door opening 2; the shock wave pressure testing unit comprises a wall surface pressure sensor which is arranged on the wall body of the explosion load generation chamber 1 opposite to the test main body protective door 4. The load conditions of the protection door under the implosion environment are reflected by the two types of load data collected by the quasi-static pressure test unit and the shock wave test unit.
Firstly, the size of the test main body protective door 4 is determined according to the test requirement arrangement, and bolt holes 14 are drilled in the door frame 5. And then the test main body protective door 4 is moved into the explosion load generation chamber 1 through the door opening 2, the longitudinal sealing strips 11 and the heightening sealing blocks are placed to the size which is suitable for the width of the test main body protective door 4, the door frame 5 is placed on the sealing structure, and the door frame 5, the sealing structure and the explosion load generation chamber 1 are connected together through bolts. And then installing each sensor of the test system on the back explosion surface of the test body protective door 4 according to the requirements. Two displacement sensors 16 are taken, the measuring range is 150mm, one is arranged at the center of the door, and the other is arranged at 1/4 of the long axis of the door. The measuring range of the 3 acceleration sensors 18 is 5000G. A metal bracket with a threaded hole is nailed on the protective door 4 of the test main body. The positions are respectively as follows: the center of the test body protective door 4 is 1/4 of the long axis and 1/4 of the short axis. The acceleration sensor 18 is then mounted to the metal bracket. 6 strain gages 17 and 2 strain gages are taken as a group and are respectively arranged at three points identical to the acceleration sensor 18. The strain gage 17 at each point is oriented transverse to one another. The test body protective door 4 is fixedly adhered to the test body protective door by 502 glue and transparent adhesive tape. And a quasi-static pressure sensor and a wall pressure sensor are taken and arranged at corresponding positions. All sensor wires are connected. The mode of distributing the medicine and the plugging degree of the pressure release holes 7 are selected according to the test requirements.
If implosion of the closed space is to be studied, adopting a concentrated charging mode, and completely plugging the pressure relief hole 7; if the internal explosion of the earth-boring weapon is to be studied, the pressure relief hole 7 can be partially plugged to simulate the hole drilled by the earth-boring weapon so as to simulate the explosion relief; if the damage of the nuclear explosion to the protective door is to be studied, the protection door can be realized by a plane charging mode. After the explosive is installed, the detonating cord is led into the explosive load generating chamber 1 through the threading hole 8, and all the detonating cord is ready for detonating. After the working condition is finished, the original test main body protective door 4 is disassembled, the positions of the longitudinal sealing strips 11 and the heightening sealing strips are moved to adapt to the test main body protective door 4 with new specifications, and the operation is repeated, so that a new round of test can be finished.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a simulation multisize guard gate internal explosion experimental apparatus which characterized in that: comprising the following steps: the test system comprises a sealing main body structure, a test main body protective door and a test system;
the sealing main body structure comprises an explosion load generation chamber, a sealing structure and a charging bracket; the explosion load generation chamber is of a rectangular structure, a wall body of the explosion load generation chamber is provided with a door opening and grooves with the same height as the door opening, the size of the door opening is matched with that of the test main body protective door, a plurality of rows of first threaded holes are symmetrically arranged in the grooves at two sides by taking a long axis of the door opening as a central axis, and second threaded holes are arranged at the upper edge and the lower edge of the grooves; the sealing structure is arranged between the door opening and the test main body protective door and is connected with the wall body through a threaded hole in the wall body; the explosive loading supports are arranged on two sides of the wall body opposite to the explosive load generating chamber;
the test main body protective door comprises a protective door main body and a door frame, wherein bolt holes which are matched with a sealing structure are formed in the longitudinal direction of the door frame;
the test system comprises: displacement test unit, acceleration test unit, strain test unit, quasi-static pressure test unit and shock wave test unit.
2. The simulated multi-size guard door internal explosion experimental device according to claim 1, wherein: and the explosion load generation chamber is cast by steel fiber concrete.
3. The simulated multi-size guard door internal explosion experimental device according to any one of claims 1 or 2, wherein: the explosion load generation chamber wall body is also provided with a sensor mounting hole, a pressure relief hole and a threading hole; the sensor mounting hole is high and the center of the test main body protective door is high, and the threading hole is arranged at a corner of the wall body.
4. The simulated multi-size guard door internal explosion experimental device according to claim 1, wherein: the sealing structure comprises a sealing heightening block, transverse sealing strips and longitudinal sealing strips, wherein the number of the sealing heightening block, the transverse sealing strips and the longitudinal sealing strips is two; the sealing gasket block is provided with a first connecting hole, and the first connecting hole is arranged in a manner of being matched with the first threaded hole; the cross section of the transverse sealing strip is L-shaped, the transverse sealing strip is arranged at the upper edge and the lower edge of the door, and is provided with a second connecting hole which is arranged in a way of being matched with the second threaded hole; the section of the longitudinal sealing strip is L-shaped, and a third connecting hole is formed; the sealing gasket block and the longitudinal sealing strip are sequentially connected with the first threaded hole through the first connecting hole and the third connecting hole through bolts.
5. The simulated multi-size guard door internal explosion experimental device according to claim 1, wherein: an iron wire is arranged in the middle of the charging support which is arranged in opposite directions, and two ends of the iron wire are connected with the charging support, so that the iron wire is in a straightening state.
6. The simulated multi-size guard door internal explosion experimental device according to claim 1, wherein: the displacement testing unit of the testing system is 2 displacement sensors, the head of the displacement testing unit is connected with the protective door of the testing main body through a universal head, and the tail end of the displacement testing unit is connected with the wall of the explosion load generating chamber through a metal bracket; the strain testing unit comprises 3 groups of strain gages which are fixedly arranged on the outer surface of the protective door of the test main body, the acceleration testing unit comprises 3 acceleration sensors, and the strain gages and the acceleration sensors are respectively arranged at the center, the 1/4 position and the 1/4 position of the long shaft of the protective door of the test main body in a transverse and longitudinal mode; the static pressure testing unit comprises a quasi-static pressure sensor which is arranged at one side of the door opening; the shock wave pressure testing unit comprises a wall surface pressure sensor which is arranged on the wall body of the explosion load generating chamber opposite to the protective door of the test main body.
7. The simulated multi-size guard door internal explosion experimental device of claim 6, wherein: and one of the 2 displacement sensors is arranged at the center of the test body protective door, and the other is arranged at 1/4 of the long shaft of the test body protective door.
8. The simulated multi-size guard door internal explosion experimental device according to claim 5, wherein: the iron wire loading mode comprises plane loading and concentrated loading.
9. The simulated multi-size guard door internal explosion experimental device of claim 4, wherein: the sealing gasket block, the transverse sealing strips and the longitudinal sealing strips are all made of rubber materials.
CN202211521610.7A 2022-11-30 2022-11-30 Explosion experiment device in simulation multi-size guard gate Pending CN116046316A (en)

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