CN113267519B - Transient process testing device for detonating explosive impacted by flyer - Google Patents
Transient process testing device for detonating explosive impacted by flyer Download PDFInfo
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- CN113267519B CN113267519B CN202110543365.9A CN202110543365A CN113267519B CN 113267519 B CN113267519 B CN 113267519B CN 202110543365 A CN202110543365 A CN 202110543365A CN 113267519 B CN113267519 B CN 113267519B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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Abstract
The invention discloses a transient process testing device for a flying piece impact detonating explosive, which comprises a testing cabin, wherein a front flying pipeline and a rear flying pipeline are coaxially connected to two sides of the testing cabin, the front flying pipeline is connected with an X-ray generating device, the rear flying pipeline is connected with a gated camera through a connecting flange, and an X-ray scintillator is arranged in the connecting flange and can convert X-rays led out from a testing cavity of the rear flying pipeline into visible light and the visible light is shot and imaged by the gated camera; the testing device further comprises a synchronization module, the synchronization module is electrically connected with the X-ray generating device, the metal bridge foil and the gate control camera respectively, and can send out synchronization signals to the metal bridge foil and the gate control camera when the X-ray generating device emits X-rays to control the metal bridge foil to generate electric explosion and the gate control camera to take pictures. The invention utilizes X-ray and gate control camera to realize the transient micro process of the detonation explosive impacted by the flyer for detection, and has the advantages of convenient control, good safety and the like.
Description
Technical Field
The invention relates to the technical field of optical test equipment, in particular to a transient process test device for a flyer impact detonating explosive.
Background
The detonation of the high-speed flyer impact explosive generated by the explosion of the metal points is the basic principle of the design of the impact sheet detonator, and has very important practical significance for recording and measuring the transient microscopic process of the flyer impact explosive. However, because the duration of the initiation process is short, the reaction area is small, the produced substance components are complex and the density is high, and the process can generate strong explosion shock waves and radiation products to cause physical damage to instruments and equipment, the traditional measurement method is difficult to detect the microscopic process of the flyer striking the initiation explosive.
Disclosure of Invention
In order to solve the problems, the invention provides a transient process testing device for a flyer impact detonating explosive, which can detect the microscopic process of the flyer impact detonating explosive.
In order to realize the purpose, the technical scheme of the invention is as follows:
a testing device for transient process of detonation explosive impacted by flyers comprises a testing cabin, wherein the testing cabin is provided with a testing cavity for mounting a metal bridge foil and an explosive column, two sides of the testing cabin are coaxially connected with a front flying pipeline and a rear flying pipeline, the front flying pipeline is connected with an X-ray generating device and used for introducing X-rays into the testing cavity, the rear flying pipeline is connected with a gate control camera through a connecting flange, and an X-ray scintillator is arranged in the connecting flange and can convert the X-rays introduced from the testing cavity of the rear flying pipeline into visible light and shoot and image by the gate control camera;
the testing device further comprises a synchronization module, wherein the synchronization module is electrically connected with the X-ray generating device, the metal bridge foil and the gate control camera respectively, and can send synchronization signals to the metal bridge foil and the gate control camera when the X-ray generating device emits X-rays to control the metal bridge foil to generate electric explosion and the gate control camera to take pictures.
By adopting the scheme, the transient images at all times in the process of detonating when the high-speed flyer generated by the metal bridge foil strikes the explosive column can be obtained by irradiating with X rays and shooting images by using a gated camera, so that data reference is provided for design of the impact sheet detonator and relevant theoretical research.
In order to reliably realize the synchronous control among the X-ray generating device, the metal bridge foil and the gate control camera, the synchronous module is respectively connected with the metal bridge foil and the gate control camera through a detonating line and a trigger signal line and is provided with a trigger signal port associated with the X-ray generating device, and the synchronous module sends synchronous signals to the metal bridge foil and the gate control camera, wherein the synchronous signals have different delay values, so that the accurate synchronization of the system is realized.
The front flying pipeline and the rear flying pipeline are vacuum pipelines, the transmission loss of X-rays is reduced, beryllium windows are arranged between the front flying pipeline and the test cabin and between the rear flying pipeline and the test cabin, and the sealing between the flying pipeline and the test cabin can be ensured while the loss of the X-rays is reduced.
The connecting flange is of a right-angle bending structure, the reflector is installed at the corner position inside the connecting flange, and due to the design, part of detonating fragments can be prevented from entering the door control camera to cause damage.
In order to prevent the flying sheet generated by the metal bridge foil from damaging subsequent equipment of the system through a flying pipeline, a rear protection screen is arranged between the rear flying pipeline and the connecting flange.
In order to facilitate installation of the metal bridge foil and the explosive column, an operation window is arranged at the upper end of the test chamber, and a front protection screen is arranged at a position close to the operation window to protect the test cavity from being damaged by shock waves.
The test chamber is provided with an air inlet and an air outlet and used for discharging explosion waste gas in the test cavity after the test and injecting clean gas.
Has the beneficial effects that:
the transient process testing device for the flyer impact initiating explosive provided by the invention can be used for detecting the transient microscopic process of the flyer impact initiating explosive by utilizing X rays and a gate control camera, and has the advantages of convenience in control, good safety and the like.
Drawings
Fig. 1 is a schematic diagram of an exemplary structure of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1, a testing device for transient process of flyer impact initiation explosive comprises a testing chamber 2, wherein the testing chamber 2 is provided with a testing cavity 20 with a hollow structure and used for installing a metal bridge foil 21 and an explosive column 22, an electric switching disc 27 used for connecting cables is arranged at the bottom of the testing chamber 2, the metal bridge foil 21 can be excited to generate electric explosion under the power-on condition, so that a high-speed flyer impact explosive column 22 is formed to initiate detonation, and an operating window 23 communicated with the testing cavity 20 is arranged at the upper end of the testing chamber 2 to facilitate installation and placement of the metal bridge foil 21 and the explosive column 22.
In order to protect the test chamber 20 from being damaged by the shock wave, a front protection screen 24 is arranged inside the test chamber 2 at a position of the test chamber 20 close to the operation window 23.
The positions close to the upper end and the lower end of the two sides of the test chamber 2 are respectively provided with an air inlet 25 and an air outlet 26, and the test chamber 20 is used for air exchange, namely, the detonation waste gas in the test chamber 20 after explosion is discharged, and clean gas is supplemented.
The two sides of the middle part of the test chamber 2 are provided with a front flying pipeline 1 and a rear flying pipeline 3 which are coaxially arranged along the radial direction of the test chamber 2, the front flying pipeline and the rear flying pipeline are opposite to the installation positions of the metal bridge foil 21 and the explosive column 22 in the test cavity 20, and a positioning structure can be arranged in the test cavity 20 so as to limit the metal bridge foil 21 and the explosive column 22 at the corresponding positions.
The front flying pipeline and the rear flying pipeline are both in vacuum environment, the testing cavity 20 of the testing cabin 2 is in atmospheric environment, and beryllium windows 7 are arranged at the connecting positions of the testing cabin 2, the front flying pipeline 1 and the rear flying pipeline 3 so as to ensure the sealing between the testing cabin 2 and the front flying pipeline and the rear flying pipeline.
The front flying pipeline 1 is connected with an X-ray generating device 10 and used for introducing X-rays into the testing cavity 20, and the beryllium window 7 and the vacuum design of the front flying pipeline and the back flying pipeline can effectively reduce the transmission loss of the X-rays.
The back flying pipeline 3 is connected with a gate control camera 5 through the adapter flange 4, the adapter flange 4 is internally provided with an X-ray generating device 41, and the X-ray led out from the test cavity 20 of the back flying pipeline 3 can be converted into visible light and shot by the gate control camera 5 for imaging.
Be equipped with back protection screen 31 between back flight pipeline 3 and adapter flange 4 to stop that the explosion piece from getting into follow-up equipment such as door control camera 5 and causing the destruction, adapter flange 4 adopts the right angle corner design, can prevent that partial explosion piece from passing and directly entering into door control camera 5 behind the back protection screen 31, for the convenience of door control camera 5 shooting image, installs speculum 42 in the inside corner position of adapter flange 4.
The testing device further comprises a synchronization module 6, wherein the synchronization module 6 is connected with the metal bridge foil 21 in the testing cavity 20 through a detonating cord 61, is connected with the gate control camera 5 through a triggering signal line 62, and is provided with a triggering signal port 63 which is associated with the X-ray generating device 10, can receive a triggering signal from the X-ray generating device 10, and synchronously triggers the metal bridge foil 21 to generate electric explosion and take a picture by the gate control camera 5.
In this embodiment, the synchronization module 6 sends out the synchronization signals to the metal bridge foil 21 and the door control camera 5 with different delay values, and the specific delay values are set by the user according to the actual situation of the site.
The test method of the test device comprises the following steps:
firstly, carrying out calibration test on X-ray imaging, adjusting the relative position of a light source and the front flying pipeline 1, ensuring that X-rays are incident along the axial direction of the front flying pipeline 1, emitting X-rays under the condition of not placing a metal bridge foil 21 and an explosive column 22, recording images by a gated camera 5, checking whether the images are positioned in the center of a recording surface of the gated camera 5, and carrying out corresponding adjustment.
And then, synchronously testing, namely mounting the metal bridge foil 21 and the explosive column 22 at the set position of the testing cavity 20, so that the emission surface of the metal bridge foil 21 is positioned near the center of the testing cavity 20 and faces the explosive column 22, and the impact surface of the explosive column 22 is superposed with the axis of the testing cavity 20, thereby ensuring that the initiation plane is positioned at the center of an imaging view field. The X-ray generating device 10 provides a synchronous trigger signal, two paths of synchronous signals with different delay values are triggered through the synchronous module 6 and are respectively transmitted to the metal bridge foil 21 and the gate control camera 5 through the detonating cord 61 and the trigger signal line 62, the metal bridge foil 21 is electrically exploded, the gate control camera 5 shoots images, and the gate control camera 5 can capture transient images generated by flying pieces generated by the metal bridge foil 21 flying to the center of the test cavity 20 to impact the explosive column 22 through adjustment of the delay values of the two paths of synchronous signals, so that accurate synchronization of the system is realized.
Before and after the test, whether the front protection screen 24, the rear protection screen 31 and each beryllium window 7 are intact needs to be detected, and if the defects exist, the beryllium windows need to be replaced firstly.
After the test is finished, the air inlet 25 and the air outlet 26 are opened for air exchange, after the detonation waste gas is discharged, the operation window 23 is opened, the new metal bridge foil 21 and the new explosive column 22 are replaced, and the next test can be carried out.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and that those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (1)
1. The utility model provides a flying piece striking priming explosive transient state process testing arrangement which characterized in that: the test cabin (2) is provided with a test cavity (20) for mounting a metal bridge foil (21) and an explosive column (22), two sides of the test cabin (2) are coaxially connected with a front flight pipeline (1) and a rear flight pipeline (3), the front flight pipeline (1) is connected with an X-ray generating device (10) and used for introducing X rays into the test cavity (20), the rear flight pipeline (3) is connected with a gated camera (5) through a connecting flange (4), an X-ray scintillator (41) is arranged in the connecting flange (4) and can convert the X rays led out from the test cavity (20) by the rear flight pipeline (3) into visible light and the visible light is shot by the gated camera (5) to form an image;
the testing device further comprises a synchronization module (6), wherein the synchronization module (6) is respectively electrically connected with the X-ray generating device (10), the metal bridge foil (21) and the gate control camera (5), and can send out synchronization signals to the metal bridge foil (21) and the gate control camera (5) when the X-ray generating device (10) emits X-rays to control the metal bridge foil (21) to generate electric explosion and the gate control camera (5) to take pictures;
the synchronization module (6) is respectively connected with the metal bridge foil (21) and the door control camera (5) through a detonating wire (61) and a trigger signal wire (62) and is provided with a trigger signal port (63) associated with the X-ray generating device (10), and the synchronization signals sent out by the synchronization module (6) to the metal bridge foil (21) and the door control camera (5) have different delay values;
the connecting flange (4) is of a right-angle bending structure, and a reflector (42) is arranged at the corner position inside the connecting flange;
the front flying pipeline (1) and the rear flying pipeline (3) are both vacuum pipelines, and beryllium windows (7) are arranged between the front flying pipeline (1) and the test cabin (2) and between the rear flying pipeline (3) and the test cabin;
a rear protection screen (31) is arranged between the rear flying pipeline (3) and the connecting flange (4);
an operation window (23) is arranged at the upper end of the test cabin (2), and a front protection screen (24) is arranged at a position close to the operation window (23);
the test chamber (2) is provided with an air inlet (25) and an air outlet (26).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110543365.9A CN113267519B (en) | 2021-05-19 | 2021-05-19 | Transient process testing device for detonating explosive impacted by flyer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110543365.9A CN113267519B (en) | 2021-05-19 | 2021-05-19 | Transient process testing device for detonating explosive impacted by flyer |
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| CN113267519A CN113267519A (en) | 2021-08-17 |
| CN113267519B true CN113267519B (en) | 2022-07-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115980103B (en) * | 2022-12-30 | 2023-11-28 | 中国工程物理研究院激光聚变研究中心 | Dynamic fly-sheet perspective photographing method and system |
| CN116008584B (en) * | 2023-02-22 | 2023-11-28 | 中国工程物理研究院激光聚变研究中心 | Fly-sheet attitude testing method and system |
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