Explosion flame shooting device

Abstract

The utility model relates to the technical field of explosion shooting, and discloses an explosion flame shooting device which comprises an anti-explosion base, the anti-explosion base is arranged in a niche in a roadway, a threaded sleeve is arranged at the upper end of the anti-explosion base, an ejector rod is arranged in the threaded sleeve and can abut against the top end of the niche, and a fixing plate is arranged at the end, extending out of the niche, of the anti-explosion base. The fixed plate is fixedly mounted on the outer wall of the niche; the top rod and the fixing plate are arranged at the upper end of the anti-explosion base, so that the top rod abuts against the top end of the niche, the anti-explosion base and the inner bottom of the niche are tightly fixed under the action of counter-acting force, the fixing plate is fixed to the outer wall of the niche through the bolt, and then the anti-explosion base is further fixed; and the device is prevented from vibrating or moving due to explosion shock waves, so that the device can stably and clearly shoot the microscopic evolution process in the explosion flame, and the change rule of gas dust explosion is more known.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion photography, in particular to a device for photographing explosion flames. Background Art

[0002] Currently, domestic and foreign scholars have focused on the flame structure, flame speed, and propagation behavior of small-scale pipeline gas explosions. Because high-temperature flames and high-pressure shock waves are generated during explosions, which can cause damage to surrounding equipment and facilities, high-speed cameras can only be placed in niches farther away from the tunnel to study the flame's migration patterns by capturing images of the entire explosion flame.

[0003] The currently commonly used camera explosion-proof devices only have explosion-proof functions and do not have the function of resisting the explosion shock wave at the center of the explosion, which causes the camera to shake when shooting, and thus cannot clearly and accurately shoot the inside of the explosion flame. Since the internal situation of the internal explosion flame cannot be photographed, the propagation and evolution of the flame inside the explosion environment are unclear, and the microscopic change law of gas and dust explosions is unclear. Therefore, in order to safely and reliably test the microscopic evolution mechanism of the internal explosion flame, it is urgent to design an explosion flame shooting device for shooting the internal evolution law of the explosion flame. Utility Model Content

[0004] The utility model is intended to provide an explosion flame shooting device to solve the problem that when shooting the internal evolution law of the explosion flame, the camera is easily shaken by the explosion shock wave and cannot be clearly shot.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: an explosion flame shooting device, including an explosion-proof base, the explosion-proof base is arranged in a niche in the tunnel, a threaded sleeve is provided at the upper end of the explosion-proof base, a push rod is provided inside the threaded sleeve, the push rod can be tightly pressed against the top of the niche, and a fixing plate is provided at one end of the explosion-proof base extending out of the niche, and the fixing plate is fixedly installed on the outer wall of the niche.

[0006] The beneficial effects of this program are:

[0007] The explosion-proof base can increase the contact area with the niche, so that the shooting device can be more closely attached to the inner bottom of the niche. At the same time, by rotating the top rod, the top rod is rotated out of the threaded sleeve and supports the top of the niche, so that the explosion-proof base is tightly fixed to the inner bottom of the niche under the action of the reaction force. The staff then uses bolts to pass through the through grooves on the fixing plate to fix the fixing plate to the outer wall of the niche, thereby further fixing the explosion-proof base to prevent the device from vibrating or moving due to the explosion shock wave, so that the equipment can stably and clearly capture the microscopic evolution process inside the explosion flame, thereby better understanding the changing law of gas and dust explosions.

[0008] Preferably, as an improvement, a horizontal adjustment assembly is provided at the top of the explosion-proof base. The horizontal adjustment assembly includes a rotating plate, a slider, and a fixing bolt. The rotating plate is rotatably connected to the top of the explosion-proof base. A first limiting groove is formed at the lower end of the explosion-proof base. The slider is disposed in the first limiting groove. The fixing bolt is disposed at the top of the rotating plate, and the screw rod of the fixing bolt extends into the first limiting groove to be connected with the slider.

[0009] The beneficial effects are as follows: Before the experiment, the device is adjusted in the left and right angles through the horizontal adjustment assembly, so that the device can adapt to different shooting orientations. Cooperating with multiple devices, all-round images of the flame explosion can be captured. During the adjustment process, the slider is unlocked by rotating the fixing bolt, so that the slider can move in the first limiting groove. At this time, the rotating plate is rotated to make the rotating plate rotate. When the rotating plate rotates to a suitable position, the slider is fixed by rotating the fixing bolt again, so that the slider abuts against the inner wall of the first limiting groove, thereby fixing the rotating plate and the explosion-proof base to prevent the rotating plate from shaking.

[0010] Preferably, as an improvement, a vertical adjustment assembly is provided at the end of the rotating plate away from the explosion-proof base. The vertical adjustment assembly includes a mounting plate, a threaded rod, and a limiting plate. The mounting plate is disposed at the end of the rotating plate away from the explosion-proof base. The threaded rod is disposed at the end of the mounting plate away from the niche. The limiting plate is disposed at the end of the rotating plate away from the niche. A card slot is formed in the limiting plate. The threaded rod is located in the card slot. Two first nuts are provided on the outer side of the threaded rod, and the two first nuts are located on both sides of the limiting plate.

[0011] The beneficial effects are as follows: The device is adjusted in the vertical direction through the vertical adjustment assembly, so that the device can capture different perspectives of the explosion flame. When it is necessary to adjust the pitching angle of the device, the threaded rod can move in the card slot by rotating the symmetrically installed first nuts. At this time, the perspective of the device is adjusted by moving the mounting plate. After the adjustment, only the two first nuts need to be rotated to fix the threaded rod in the card slot. At this time, the mounting plate, the threaded rod, and the limiting plate form a triangle, constituting a rigid frame, thereby increasing the stability of the device during shooting.

[0012] Preferably, as an improvement, an explosion-proof housing is provided at the end of the mounting plate away from the explosion-proof base. The explosion-proof housing includes a housing, a fixing base, and explosion-proof glass. The housing is disposed at the end of the mounting plate away from the explosion-proof base. The fixing base is disposed at the inner bottom of the housing and is used to install a camera. The explosion-proof glass is disposed at the end of the housing extending out of the niche.

[0013] The beneficial effects are as follows: The camera is protected by setting an explosion-proof housing to prevent it from being damaged by the shock wave of an explosion. The housing is used to wrap the camera, thus playing a protective role for the camera. The explosion-proof glass can not only protect the camera but also enable the camera to clearly capture the explosion flame. The fixed base is used to fixedly install the camera at the inner bottom of the housing, increasing the stability of the camera shooting.

[0014] Preferably, as an improvement, a support assembly is provided at one end of the rotating plate away from the explosion-proof base. The support assembly includes a support rod, two support plates, and a second nut. The two support plates are symmetrically arranged at one end of the rotating plate away from the explosion-proof base. Second limiting grooves are formed at the opposite ends of the two support plates. The support rod is arranged inside the second limiting grooves and is fixedly connected to one end of the mounting plate close to the explosion-proof base. The second nut is arranged at both ends of the support rod extending out of the second limiting grooves.

[0015] The beneficial effects are as follows: By forming the second limiting grooves on the support plates, the support rod can move in the limiting grooves, and the support rod is fixed to the lower end of the explosion-proof housing, so as to cooperate with the vertical adjustment assembly to adjust the viewing angle of the explosion-proof housing. At the same time, the support rod is fixed by the second nut, so that the support plates clamp the explosion-proof housing, further increasing the stability of the explosion-proof housing.

[0016] Preferably, as an improvement, a light source is provided on the inner wall of the housing, and a wire socket is provided on the inner wall of the housing. The wire socket is used to supply power to the light source and the camera, and a wiring hole is formed on the outer wall of the housing.

[0017] The beneficial effects are as follows: By setting the light source, exposure compensation can be carried out for the camera to prevent overexposure when shooting the explosion flame, resulting in unclear shooting effects. The wire socket is used to supply power to the camera and the light source. The wiring hole can connect the power cord into the housing and at the same time connect the data transmission line of the camera to the housing.

[0018] Preferably, as an improvement, a rotating ring is rotatably connected to the middle of the threaded sleeve, and the rotating ring is threadedly connected to the ejector rod.

[0019] The beneficial effects are as follows: By rotating the rotating ring, the part of the ejector rod located in the threaded sleeve rotates out. When the ejector rod abuts against the top of the niche, the explosion-proof base is tightly abutted against the inner bottom of the niche, thus increasing the stability of the explosion-proof base and preventing the explosion-proof base from shaking under the action of the explosion shock wave.

[0020] Preferably, as an improvement, a desiccant is provided inside the housing.

[0021] The beneficial effects are as follows: By arranging the desiccant inside the housing, the inside of the housing can be kept dry, preventing the internal electrical components of the camera from being damaged.

[0022] Preferably, as an improvement, the fixing plate is provided with a through groove, and the fixing plate is fixedly installed on the outer wall of the niche through bolts and the through groove.

[0023] The beneficial effects are as follows: The fixing plate is fixedly installed on the outer wall of the niche through the mutual cooperation of the bolts and the through groove, which can not only enhance the stability of the explosion-proof base, but also facilitate the disassembly and installation of the staff. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the explosion-proof base according to an embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the horizontal adjustment assembly according to an embodiment of the present invention;

[0026] Figure 3 It is a schematic structural diagram of the explosion-proof housing according to an embodiment of the present invention. Detailed Description of the Invention

[0027] The following is further detailed through specific embodiments:

[0028] The reference numerals in the accompanying drawings of the specification include: explosion-proof base 1, threaded sleeve 2, ejector rod 3, fixing plate 4, rotating plate 5, slider 6, fixing bolt 7, first limit groove 8, mounting plate 9, threaded rod 10, limit plate 11, first nut 12, housing 13, fixed base 14, explosion-proof glass 15, support rod 16, support plate 17, second nut 18, second limit groove 19, light source 20, plug board 21, wiring hole 22, rotating ring 23, through groove 24.

[0029] Embodiment

[0030] The embodiment is basically as shown in the attached Figures 1-3 shown, as Figure 1 shown, an explosion flame photographing device includes an explosion-proof base 1, the explosion-proof base 1 is fixedly installed in a niche in a roadway, threaded sleeves 2 are symmetrically and fixedly installed on the rear side of the upper end of the explosion-proof base 1, a rotating ring 23 is rotatably installed in the middle of the threaded sleeve 2, a ejector rod 3 is threadedly connected in the threaded sleeve 2, and the rotating ring 23 is threadedly connected with the ejector rod 3. By rotating the rotating ring 23, the ejector rod 3 extends out of the threaded sleeve 2 and abuts against the top of the niche. One end of the explosion-proof base 1 extending out of the niche is fixedly installed with a fixing plate 4, the fixing plate 4 is provided with a through groove 24, a screw is fixedly installed on the wall, the screw extends out of the through groove 24, and the fixing plate 4 is fixed by a nut matching the screw. A rotating groove is opened at the upper end of the explosion-proof base 1, and the explosion-proof base 1 is provided with a horizontal adjustment assembly. The horizontal adjustment assembly includes a rotating plate 5, two sliders 6 and a fixing bolt 7, as Figure 2As shown in the figure, a rotating shaft is rotatably installed at the lower end of the rotating plate 5. The rotating shaft is fixedly connected to the explosion-proof base 1 through a rotating groove. The lower end of the explosion-proof base 1 is symmetrically provided with first limiting grooves 8. Two sliders 6 are respectively slidably installed in each first limiting groove 8. Two fixing bolts 7 are symmetrically rotatably installed at the upper end of the rotating plate 5. The screw rods of the two fixing bolts 7 respectively extend into the first limiting grooves 8 and are threadedly connected to the sliders 6. The left and right rotation angle of the horizontal adjustment component is 0 to 60°.

[0031] A vertical adjustment component is provided at the upper end of the rotating plate 5, as Figure 1 shown. The vertical adjustment component includes a mounting plate 9, a threaded rod 10 and a limiting plate 11. The rear end of the mounting plate 9 is hingedly installed at the rear side of the upper end of the rotating plate 5. The threaded rod 10 is hingedly installed at the front end of the mounting plate 9. The limiting plate 11 is fixedly installed at the front end of the rotating plate 5. The limiting plate 11 is provided with a card slot. The threaded rod 10 is located in the card slot. Two first nuts 12 are threaded on the outer side of the threaded rod 10. The two first nuts 12 are located at the upper and lower ends of the limiting plate 11. The adjustment range of the pitching angle is set to -5 to 20°.

[0032] An explosion-proof shell is fixedly installed at the upper end of the mounting plate 9, as Figure 3 shown. The explosion-proof shell includes a shell 13, a fixed base 14 and an explosion-proof glass 15. The shell 13 is fixedly installed at the upper end of the mounting plate 9. The fixed base 14 is fixedly installed at the inner bottom of the shell 13. The fixed base 14 is used to install a camera. The explosion-proof glass 15 is fixedly installed at the front end of the shell 13. A light source 20 is fixedly installed on the inner wall of the shell 13. A wiring board 21 is fixedly installed on the inner wall of the shell 13. The wiring board 21 is used to supply power to the light source 20 and the camera. A wiring hole 22 is opened on the outer wall of the shell 13. The wiring hole 22 is set as a six-point external thread for connecting an explosion-proof hose and putting the power cord into the explosion-proof hose to prevent the circuit from being damaged under the conditions of shock wave and high temperature. A desiccant is placed inside the shell 13.

[0033] A support component is provided at the upper end of the rotating plate 5. The support component includes a support rod 16, two support plates 17 and a second nut 18. The two support plates 17 are symmetrically fixedly installed at the upper end of the rotating plate 5. The two support plates 17 are located on the left and right sides of the explosion-proof shell. A second limiting groove 19 is opened at one end of the two support plates 17 facing each other. The support rod 16 is slidably installed inside the second limiting groove 19. The support rod 16 is fixedly connected to the lower end of the mounting plate 9. The two second nuts 18 are respectively threadedly connected to both ends of the support rod 16 extending out of the second limiting groove 19.

[0034] After the explosion-proof shell is installed, a pressure-bearing test needs to be carried out. Connect a water pressure test device from the wiring hole 22. Adjust the water pressure to 5.5 MPa. Observe whether the explosion-proof shell leaks or deforms within 5 minutes. Then, conduct anti-impact and high-temperature resistance tests. Fix the device in the niche of the roadway. Fill 100 m in volume in the closed end of the roadway3 , methane with a concentration of 8-10%, and 100 kg of coal dust is arranged. After ignition and explosion, ventilation is carried out, and whether the device is damaged or deformed is observed. If the device is not damaged or deformed during the test, it is considered qualified.

[0035] The specific implementation process is as follows:

[0036] First, place the explosion-proof base 1 in the niche, align the through groove 24 opened on the fixing plate 4 with the screw rod at the upper end of the wall, and then fix the fixing plate 4 on the wall through the nut matching the screw rod. Then rotate the rotating ring 23 so that the ejector rod 3 in the threaded sleeve 2 extends out. When the ejector rod 3 abuts against the inner wall of the niche, the explosion-proof base 1 is firmly fixed in the niche. At this time, fix the explosion-proof shell on the mounting plate 9, fix the camera on the fixed base 14, install the light source 20 and fix the housing 13, and then adjust the shooting angle of the camera by rotating the rotating plate 5. When the shooting angle adjustment is completed, make the slider 6 abut against the inner wall of the first limiting groove 8 by rotating the fixing screw rod, so as to fix the rotating plate 5 and the explosion-proof base 1. At this time, adjust the shooting angle of the camera through the vertical adjustment component and the support component. When the shooting angle adjustment is completed, fix the threaded rod 10 in the card slot of the limiting plate 11 through two first nuts 12, and clamp the explosion-proof shell by rotating the second nut 18 with two support plates 17 to increase the shooting stability of the explosion-proof shell. Finally, fill a certain concentration of gas in the roadway, arrange coal dust, and test the explosion-proof performance of the explosion-proof shell and the image inside the explosion flame after detonation.

[0037] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. An explosion flame photographing device, characterized in that: It includes an explosion-proof base which is arranged in a niche in the roadway. A threaded sleeve is provided at the upper end of the explosion-proof base. A top rod is arranged inside the threaded sleeve and can be pressed tightly against the top of the niche. One end of the explosion-proof base extending out of the niche is provided with a fixing plate which is fixedly installed on the outer wall of the niche. A horizontal adjustment component is provided at the top of the explosion-proof base. The horizontal adjustment component includes a rotating plate, a slider and a fixing bolt. The rotating plate is rotatably connected to the top of the explosion-proof base. A first limiting groove is opened at the lower end of the explosion-proof base. The slider is arranged in the first limiting groove. The fixing bolt is arranged at the top of the rotating plate, and the screw rod of the fixing bolt extends into the first limiting groove to be connected with the slider. One end of the rotating plate away from the explosion-proof base is provided with a vertical adjustment component. The vertical adjustment component includes a mounting plate, a threaded rod and a limiting plate. The mounting plate is arranged at one end of the rotating plate away from the explosion-proof base. The threaded rod is arranged at one end of the mounting plate away from the niche. The limiting plate is arranged at one end of the rotating plate away from the niche. A card slot is opened in the limiting plate. The threaded rod is located in the card slot. Two first nuts are arranged on the outer side of the threaded rod, and the two first nuts are located on both sides of the limiting plate. An explosion-proof housing is arranged at one end of the mounting plate away from the explosion-proof base. The explosion-proof housing includes a housing body, a fixed base and explosion-proof glass. The housing body is arranged at one end of the mounting plate away from the explosion-proof base. The fixed base is arranged on the inner bottom of the housing body and is used for installing a camera. The explosion-proof glass is arranged at one end of the housing body extending out of the niche.

2. The explosion flame photographing device according to claim 1, wherein: A support component is arranged at one end of the rotating plate away from the explosion-proof base. The support component includes a support rod, two support plates and a second nut. The two support plates are symmetrically arranged at one end of the rotating plate away from the explosion-proof base. Second limiting grooves are opened at the opposite ends of the two support plates. The support rod is arranged inside the second limiting grooves and is fixedly connected to one end of the mounting plate close to the explosion-proof base. The second nut is arranged at both ends of the support rod extending out of the second limiting grooves.

3. The explosion flame photographing device according to claim 2, characterized in that: A light source is arranged on the inner wall of the housing body. A wiring board is arranged on the inner wall of the housing body. The wiring board is used for supplying power to the light source and the camera. A wiring hole is opened on the outer wall of the housing body.

4. An explosion flame photographing device according to claim 3, characterized in that: A rotating ring is rotatably connected to the middle of the threaded sleeve. The top rod is threadedly connected to the rotating ring.

5. The explosion flame photographing device according to claim 4, characterized in that: A desiccant is arranged inside the housing body.

6. The explosion flame photographing device according to claim 5, wherein: The fixing plate is provided with a through groove, and the fixing plate is fixedly installed on the outer wall of the niche through bolts passing through the through groove.

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