Combined sparse wave absorbing device

Abstract

The invention belongs to the technical field of shock wave effect simulation, and particularly discloses a combined sparse wave absorbing device which comprises a wave absorbing tube structure and an isolation tube structure arranged on the side edge of the wave absorbing tube structure. Wave absorbing door structures are arranged at the two ends of the wave absorbing pipe structure, and a plurality of locking structures are evenly arranged on the side edges of the wave absorbing door structures; the wave absorbing tube structure comprises a wave absorbing tube body, a mounting door frame and an isolation connecting door, the isolation connecting door is arranged on the outer side wall of the wave absorbing tube body, an isolation tube connector is arranged on the isolation connecting door, and a locking screw hole is formed in the corner of the isolation connecting door; the isolation pipe structure comprises an isolation pipe body and a mounting plate fixed to one end of the isolation pipe body, the mounting plate is matched with the mounting door frame, a through connecting hole is formed in the corner of the mounting plate, and the connecting hole and the locking screw hole are aligned and fixed through a bolt. In this way, detachable installation of the isolation pipe body is achieved, and the isolation pipe body can be detached by screwing off the bolt.

Description

Technical Field

[0001] The invention relates to the technical field of shock wave effect simulation, in particular to a combined rarefaction wave absorbing device. Background Art

[0002] The Big Bang / Thermal Simulator, hereinafter referred to as LB / TS, is used to test the performance of civilian equipment (such as trucks, civilian helicopters, etc.) under nuclear explosion shock loads and thermal loads. The LB / TS is essentially a large shock wave tube. In the shock wave tube, compressed gas is rapidly released from the drive container to form a shock wave that enters the extension of the LB / TS. By changing the volume and initial pressure of the drive container, the explosion of different types of weapons can be simulated. When the shock wave reaches the end of the LB / TS extension and contacts the atmosphere, a sparse wave with reverse flow is generated. This sparse wave enters the LB / TS extension and will have a devastating effect on the simulated shock wave characteristics.

[0003] At present, in the operation of the explosion wave simulation system, in order to weaken the influence of the rarefaction wave, the test chamber is actually divided into two sections, the front section is close to the explosion chamber and is the test section, in which the test model is placed; after the test section is the isolation section, and a plurality of loose-leaf wave-absorbing holes are arranged on the end wall of the isolation section to eliminate the influence of the rarefaction wave on the test results.

[0004] However, in the above structural design, when the shock wave passes through the test section and reaches the isolation section, a rarefaction wave of a certain intensity will still be generated to propagate to the test section, causing the shock wave overpressure action time of the test section to be shortened, and the ideal simulation effect cannot be achieved. The isolation section and the wave-breaking pipe currently used are generally fixedly connected, making it difficult to replace isolation sections of different lengths in the later stage. Summary of the invention

[0005] The object of the present invention is to provide a combined rarefaction wave absorbing device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a combined sparse wave absorbing device, comprising an absorbing tube structure and an isolation tube structure arranged on the side of the absorbing tube structure; both ends of the absorbing tube structure are provided with absorbing door structures, and the sides of the absorbing door structure are evenly provided with multiple locking structures.

[0007] After the shock wave is transmitted into the wave-breaking tube by the isolation tube structure, it is reflected by the wall and transmitted out from the wave-breaking door structure at the pipe opening on one side of the wave-breaking tube structure. A part of the sparse wave enters the wave-breaking tube structure, and another part of the sparse wave is transmitted out from the pipe opening on the other side, thereby further reducing the sparse wave entering the test chamber.

[0008] The wave-breaking pipe structure includes a wave-breaking pipe body, an installation door frame and an isolation connecting door. The installation door frame is fixed at both ends of the wave-breaking pipe body, the isolation connecting door is arranged on the outer side wall of the wave-breaking pipe body, an isolation pipe interface is arranged on the isolation connecting door, and locking screw holes are opened at the corners of the isolation connecting door.

[0009] The isolation tube structure includes an isolation tube body and a mounting plate fixed at one end of the isolation tube body, the mounting plate cooperates with the mounting door frame, a through connection hole is opened at the corner of the mounting plate, the connection hole is aligned with the locking screw hole and fixed by a bolt. In this way, the isolation tube body can be detached by unscrewing the bolt, so as to facilitate the replacement of isolation tubes of other sizes.

[0010] As a preferred embodiment of the present invention, a plurality of positioning blocks are evenly fixed on the outer side of the installation door frame, and a plurality of locking holes are provided on each positioning block; the provided positioning blocks play a positioning effect when installing the wave-breaking door structure.

[0011] As a preferred embodiment of the present invention, the wave-breaking door structure includes a wave-breaking door body, a connecting frame and a movable baffle, the movable baffle is located on the inner side of the wave-breaking door body, and the movable baffle is connected to the wave-breaking door body through a rotating shaft, the connecting frame is fixed to the outer side of the wave-breaking door body, and a number of positioning slots adapted to the positioning blocks are evenly opened on the connecting frame, the positioning blocks are inserted in the positioning slots to limit the wave-breaking door body, and the locking structure is arranged on the outer side of the positioning slots; the positioning blocks are arranged to cooperate with the positioning slots of the wave-breaking door body to facilitate positioning and improve the later fixing effect.

[0012] As a preferred embodiment of the present invention, the locking structure includes a fixed block, a movable groove, a movable plate, a screw and a positioning rod. The fixed block is fixed to the connecting frame, the movable groove is opened on a side of the fixed block close to the positioning slot, the movable plate is located in the movable groove, and a plurality of locking plugs cooperating with the locking sockets are fixed on the movable plate. The locking plugs are inserted in the locking sockets to fix the wave-breaking door body, the screw is rotatably connected to the movable plate, the positioning rod is fixed to the movable plate, and the screw and the positioning rod both pass through the fixed block, wherein the screw is threadedly connected to the fixed block; by rotating the screw, the movable plate is adjusted to move using the screw, thereby controlling the locking plug to insert or withdraw from the locking socket, which is convenient for later disassembly and assembly.

[0013] As a preferred embodiment of the present invention, a first embedding groove is provided on the outer side of the opening of the installation door frame, and a first embedding strip is fixed on the outer side of the opening of the connecting frame; a second embedding groove is provided on the outer side of the isolation pipe interface of the isolation connecting door, and a second embedding strip is fixed on the outer side of the opening of the mounting plate; the first embedding strip and the second embedding strip are respectively embedded in the first embedding groove and the second embedding groove to avoid side leakage at the connection.

[0014] As a preferred embodiment of the present invention, a hexagonal screw head is fixed on the end of the screw rod, a knob is fixed on the hexagonal screw head, a hexagonal slot is provided on the knob, the hexagonal screw head and the hexagonal slot can facilitate the use of tools to twist the screw rod, and the knob can facilitate manual rotation of the screw rod.

[0015] As a preferred embodiment of the present invention, a sliding connection is adopted between the movable plate and the movable groove, a sliding connection is adopted between the positioning rod and the fixed block, and a positioning block is fixed to the end of the positioning rod, so as to improve the smoothness of the movable plate when moving.

[0016] As a preferred embodiment of the present invention, a flange is fixed to the side of the isolation tube body away from the mounting plate, and the flange is used to connect the device to an external device.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention sets the isolation pipe body and the wave-absorbing pipe body to be detachably installed, and sets the connection frame and the isolation connection door to be bolted, so as to facilitate the later disassembly and replacement of wave-absorbing pipe bodies of different specifications. The wave-absorbing door body and the wave-absorbing pipe body are connected by a locking structure, which can facilitate the later disassembly and installation of the wave-absorbing door body and facilitate the later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 3 It is a schematic diagram of the side structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the main structure of the wave-breaking pipe of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the wave-breaking door of the present invention;

[0024] Figure 6 It is a schematic diagram of a partial cross-sectional structure of the wave-breaking door of the present invention;

[0025] Figure 7 This is a schematic diagram of the internal structure of the fixed block of the present invention;

[0026] Figure 8 This is a schematic diagram of the isolation connection door structure of the present invention;

[0027] Fig. 9 It is a schematic diagram of the main structure of the isolation tube of the present invention.

[0028] In the figure: 1. Absorbing pipe body; 101. Mounting door frame; 1011. First fitting groove; 1012. Positioning plug; 1013. Locking plug hole; 102. Isolating connecting door; 1021. Second fitting groove; 1022. Locking screw hole; 2. Absorbing door body; 201. Connecting frame; 2011. First fitting strip; 2012. Positioning slot; 202. Movable baffle; 3. Fixing block; 301. Movable groove; 302. Movable plate; 3021. Locking plug; 303. Screw; 3031. Hexagonal screw head; 3032. Knob; 304. Positioning rod; 4. Isolating pipe body; 401. Mounting plate; 4011. Second fitting strip; 4012. Connecting hole; 402. Flange. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] See also Figure 1-3 The present invention provides a technical solution: a combined sparse wave absorbing device, comprising an absorbing tube structure and an isolation tube structure arranged on the side of the absorbing tube structure; both ends of the absorbing tube structure are provided with absorbing door structures, and the sides of the absorbing door structure are evenly provided with multiple locking structures.

[0033] After the shock wave is transmitted from the isolation tube structure to the wave-breaking tube, it is reflected by the wall and transmitted from the wave-breaking door structure at the pipe opening on one side of the wave-breaking tube structure. A part of the sparse wave enters the wave-breaking tube structure, and the other part of the sparse wave is transmitted from the pipe opening on the other side, thereby further reducing the sparse wave entering the test chamber.

[0034] See also Figure 3 and 8 The wave-breaking pipe structure includes a wave-breaking pipe body 1, an installation door frame 101 and an isolation connecting door 102. The installation door frame 101 is fixed at both ends of the wave-breaking pipe body 1. The isolation connecting door 102 is arranged on the outer side wall of the wave-breaking pipe body 1. An isolation pipe interface is arranged on the isolation connecting door 102. A locking screw hole 1022 is opened at the corner of the isolation connecting door 102.

[0035] See also Fig. 9 The isolation tube structure includes an isolation tube body 4 and a mounting plate 401 fixed at one end of the isolation tube body 4. The mounting plate 401 cooperates with the mounting door frame 101. A through connection hole 4012 is provided at the corner of the mounting plate 401. The connection hole 4012 is aligned with the locking screw hole 1022 and fixed by bolts. In this way, the isolation tube body 4 can be detachably installed. By unscrewing the bolts, the isolation tube body 4 can be removed to facilitate replacement of isolation tubes of other sizes.

[0036] A plurality of positioning blocks 1012 are evenly fixed on the outer side of the installation door frame 101, and a plurality of locking holes 1013 are provided on each positioning block 1012; the positioning blocks 1012 play a positioning role when installing the wave-breaking door structure.

[0037] See also Figure 5 and 6 The wave-breaking door structure includes a wave-breaking door body 2, a connecting frame 201 and a movable baffle 202. The movable baffle 202 is located on the inner side of the wave-breaking door body 2, and the movable baffle 202 is connected to the wave-breaking door body 2 through a rotating shaft. The connecting frame 201 is fixed to the outer side of the wave-breaking door body 2. A number of positioning slots 2012 adapted to the positioning plug-in blocks 1012 are evenly opened on the connecting frame 201. The positioning plug-in blocks 1012 are inserted in the positioning slots 2012 to limit the wave-breaking door body 2, and the locking structure is arranged on the outer side of the positioning slots 2012. The positioning plug-in blocks 1012 are arranged to cooperate with the positioning slots 2012 of the wave-breaking door body 2 to facilitate positioning and improve the later fixing effect.

[0038] See also Figure 6 and 7The locking structure includes a fixed block 3, a movable groove 301, a movable plate 302, a screw 303 and a positioning rod 304, the fixed block 3 is fixed to the connecting frame 201, the movable groove 301 is arranged on a side of the fixed block 3 close to the positioning slot 2012, the movable plate 302 is located in the movable groove 301, a plurality of locking plugs 3021 matched with the locking socket 1013 are fixed on the movable plate 302, the locking plugs 3021 are inserted in the locking socket 1013 to fix the wave-breaking door body 2, the screw 303 is rotatably connected to the movable plate 302, the positioning rod 304 is fixed to the movable plate 302, the screw 303 and the positioning rod 304 both pass through the fixed block 3, wherein the screw 303 is threadedly connected to the fixed block 3; by rotating the screw 303, the movable plate 302 is adjusted to move by the screw 303, thereby controlling the locking plug 3021 to insert or withdraw from the locking socket 1013, which is convenient for later disassembly and assembly.

[0039] A first embedding groove 1011 is provided on the outer side of the opening of the installation door frame 101, and a first embedding strip 2011 is fixed on the outer side of the opening of the connecting frame 201; a second embedding groove 1021 is provided on the outer side of the isolation pipe interface of the isolation connecting door 102, and a second embedding strip 4011 is fixed on the outer side of the opening of the installation plate 401; the first embedding strip 2011 and the second embedding strip 4011 are respectively embedded in the first embedding groove 1011 and the second embedding groove 1021 to avoid side leakage at the connection.

[0040] A hexagonal screw head 3031 is fixed at the end of the screw rod 303, a knob 3032 is fixed on the hexagonal screw head 3031, and a hexagonal slot is provided on the knob 3032. The hexagonal screw head 3031 and the hexagonal slot can facilitate the use of tools to screw the screw rod 303, and the knob 3032 can facilitate manual rotation of the screw rod 303.

[0041] The movable plate 302 and the movable groove 301 are connected by sliding, the positioning rod 304 and the fixed block 3 are connected by sliding, and a positioning block is fixed at the end of the positioning rod 304, so as to improve the smoothness of the movable plate 302 when moving.

[0042] A flange 402 is fixed to one side of the isolation tube body 4 away from the mounting plate 401 , and the flange 402 is used to connect the device to an external device.

[0043] To sum up, when the device is in use, after the shock wave is transmitted from the isolation tube body 4 into the wave-breaking tube body 1, it is reflected by the wall and transmitted out from the wave-breaking door body 2 at the pipe opening on one side of the wave-breaking tube body 1. However, any wave-breaking door body 2 cannot eliminate the rarefaction wave 100%, and a small amount of rarefaction wave will still enter the wave-breaking tube body 1, and most of the rarefaction waves will be transmitted out from the pipe opening on the other side, further reducing the rarefaction wave entering the test chamber.

[0044] After the shock wave passes through the wave-breaking tube body 1, the movable baffle 202 is quickly closed under the action of its own gravity and negative pressure, preventing the external rarefaction wave from propagating through the wave-breaking tube body 1 to the test section, thereby reducing the influence of the rarefaction wave.

[0045] When it is necessary to remove the wave-breaking door body 2, the knob 3032 only needs to be rotated clockwise, so that the knob 3032 drives the screw rod 303 to rotate, so that the screw rod 303 drives the movable plate 302 away from the positioning plug block 1012, and at the same time, the movable plate 302 drives the locking plug block 3021 to withdraw from the locking plug hole 1013, and then the wave-breaking door body 2 can be directly removed from the installation door frame 101. During installation, the positioning slot 2012 is aligned with the positioning plug block 1012 and inserted. After the bottom is inserted, the screw rod 303 can be rotated in the opposite direction, so that the screw rod 303 drives the movable plate 302 to approach and squeeze the positioning plug block 1012, and the locking plug block 3021 is inserted into the locking plug hole 1013, and the installation is completed.

[0046] When removing the isolation tube body 4, you only need to unscrew the bolts that fix the mounting plate 401, and you can directly remove the isolation tube body 4 from the isolation connecting door 102. When installing, align the connecting hole 4012 with the locking screw hole 1022, and then pass the bolt through the connecting hole 4012 and screw it into the locking screw hole 1022. The operation is simple and easy to understand.

[0047] It is worth noting that the entire device is controlled by a main control button. Since the device matched with the control button is a common device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined rarefaction wave absorbing device, characterized in that: It includes a wave-breaking pipe structure and an isolation pipe structure arranged on the side of the wave-breaking pipe structure; both ends of the wave-breaking pipe structure are provided with a wave-breaking door structure, and the side of the wave-breaking door structure is evenly provided with multiple locking structures; The wave-absorbing pipe structure comprises a wave-absorbing pipe body (1), an installation door frame (101) and an isolation connection door (102); the installation door frame (101) is fixed at both ends of the wave-absorbing pipe body (1); the isolation connection door (102) is arranged on the outer side wall of the wave-absorbing pipe body (1); an isolation pipe interface is arranged on the isolation connection door (102); and locking screw holes (1022) are provided at the corners of the isolation connection door (102); The isolation tube structure comprises an isolation tube body (4) and a mounting plate (401) fixed at one end of the isolation tube body (4); the mounting plate (401) cooperates with the mounting door frame (101); a through connection hole (4012) is provided at a corner of the mounting plate (401); the connection hole (4012) is aligned with the locking screw hole (1022) and is fixed by bolts.

2. A combined rarefaction wave absorbing device according to claim 1, characterized in that: A plurality of positioning plug blocks (1012) are evenly fixed on the outer side of the installation door frame (101), and a plurality of locking plug holes (1013) are provided on each positioning plug block (1012).

3. A combined rarefaction wave absorbing device according to claim 1, characterized in that: The wave-breaking door structure comprises a wave-breaking door body (2), a connecting frame (201) and a movable baffle (202); The movable baffle (202) is located inside the wave-breaking door body (2), and the movable baffle (202) is connected to the wave-breaking door body (2) via a rotating shaft. The connecting frame (201) is fixed on the outside of the wave-breaking door body (2). The connecting frame (201) is evenly provided with a plurality of positioning slots (2012) adapted to the positioning plug blocks (1012). The positioning plug blocks (1012) are inserted into the positioning slots (2012) to restrict the wave-breaking door body (2), and the locking structure is arranged on the outside of the positioning slots (2012).

4. A combined rarefaction wave absorbing device according to claim 1, characterized in that: The locking structure comprises a fixed block (3), a movable groove (301), a movable plate (302), a screw rod (303) and a positioning rod (304); The fixed block (3) is fixed to the connection frame (201); the movable groove (301) is provided on a side of the fixed block (3) close to the positioning slot (2012); the movable plate (302) is located in the movable groove (301); a plurality of locking plugs (3021) matched with the locking sockets (1013) are fixed to the movable plate (302); the locking plugs (3021) are inserted into the locking sockets (1013) to fix the wave-absorbing door body (2); the screw rod (303) is rotatably connected to the movable plate (302); the positioning rod (304) is fixed to the movable plate (302); the screw rod (303) and the positioning rod (304) both penetrate the fixed block (3); and the screw rod (303) and the fixed block (3) are threadedly connected.

5. A combined rarefaction wave absorbing device according to claim 1, characterized in that: A first engaging groove (1011) is provided on the outer side of the opening of the installation door frame (101), and a first engaging strip (2011) is fixed on the outer side of the opening of the connection frame (201); a second engaging groove (1021) is provided on the outer side of the isolation pipe interface of the isolation connection door (102), and a second engaging strip (4011) is fixed on the outer side of the opening of the installation plate (401).

6. A combined rarefaction wave absorbing device according to claim 1, characterized in that: A hexagonal screw head (3031) is fixed to the end of the screw rod (303), a knob (3032) is fixed to the hexagonal screw head (3031), and a hexagonal groove is formed on the knob (3032).

7. A combined rarefaction wave absorbing device according to claim 1, characterized in that: The movable plate (302) and the movable groove (301) are connected by sliding, the positioning rod (304) and the fixed block (3) are connected by sliding, and a positioning block is fixed at the end of the positioning rod (304).

8. The combined rarefaction wave absorbing device according to claim 1, characterized in that: A flange (402) is fixed to the side of the isolation tube body (4) away from the mounting plate (401).

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