An intrinsically safe explosion-proof miniature camera system

Abstract

This application discloses an intrinsically safe explosion-proof miniature camera system, belonging to the field of explosion-proof cameras. This system includes a core tube, an intrinsically safe camera, an intrinsically safe light source, mounting components, an intrinsically safe power supply, and an intrinsically safe monitoring platform. The advantages and effects of this invention are: This invention can be used in flammable and explosive environments, with a reliable installation method and an intrinsically safe light source. It can operate normally in dark environments and will not cause an explosion due to the camera's application, greatly reducing economic losses, lowering risks, and ensuring personnel safety during production.

Description

Technical Field

[0001] This application relates to the technical field of explosion-proof cameras, and in particular to an intrinsically safe explosion-proof miniature camera. Background Technology

[0002] During the casting process of a certain type of pyrotechnic device, the compliance of the casting process status and the shape of the casting surface with standards is one of the key quality requirements, and its testing is of great significance. This pyrotechnic device consists of a cylinder and a core tube located at the center of the cylinder. The area between the core tube and the cylinder is the casting location, which is carried out in a dark environment. The casting fuel is flammable and explosive, therefore, the camera used must meet strict explosion-proof requirements.

[0003] With the development of national industrialization, the demand for explosion-proof requirements has expanded to various fields—the demand is even greater in petroleum, chemical, shipping, aerospace, metallurgy, scientific research and military industries, with different and more targeted requirements. In particular, the rapid development of my country's petrochemical industry has accelerated the development of explosion-proof industrial monitoring, which means that the development focus of cameras is moving towards explosion-proof.

[0004] Currently, this pyrotechnic device needs to achieve camera monitoring in flammable and explosive environments while meeting the structural strength requirements of the core tube, allowing external personnel to observe and analyze the situation. In this context, current market cameras fall far short of simultaneously meeting the requirements of intrinsic safety, explosion-proof design, small size, backlight protection, and reliable installation.

[0005] To address this issue, intrinsically safe cameras and intrinsically safe light sources are used, combined with reliable installation methods, to achieve visual monitoring in complex environments. Summary of the Invention

[0006] The technical problem solved by this invention is to overcome the shortcomings of existing technologies and provide an intrinsically safe explosion-proof miniature camera system. This dedicated system can fully realize visual detection during the casting process of pyrotechnic materials. It can be used in flammable and explosive environments, and is equipped with a reliable installation method and an intrinsically safe light source, enabling it to work normally in dark environments. The use of this monitoring system itself will not cause an explosion, which can greatly reduce economic losses and ensure the personal safety of personnel during the production process.

[0007] This application combines an intrinsically safe camera, an intrinsically safe light source, mounting components, an intrinsically safe power supply, and an intrinsically safe monitoring platform to meet intrinsically safe requirements and enable visual monitoring of the pouring process.

[0008] The technical solution of this invention is:

[0009] An intrinsically safe explosion-proof miniature camera system includes multiple camera components, each of which includes an intrinsically safe camera, an intrinsically safe light source, and mounting components.

[0010] The mounting assembly is connected to the outer wall of the core tube via the mounting assembly plane of the core tube. The intrinsically safe light source and the intrinsically safe camera are respectively connected to a mounting assembly from the inside of the core tube, and the intrinsically safe camera can capture images of the space outside the core tube through the mounting assembly. The intrinsically safe light source is used to provide illumination, and the intrinsically safe light source and the intrinsically safe camera are distributed along the axial direction of the core tube.

[0011] The mounting assembly plane includes a mounting groove located on the outer wall of the core tube and a through hole penetrating the tube wall, with the through hole located in the middle of the mounting groove;

[0012] The mounting components include a camera mount and an external pressure plate. The camera mount is integrally connected to a connecting part for connecting an intrinsically safe light source and / or an intrinsically safe camera. The connecting part of the camera mount passes through a through hole, and one side of the camera connecting part abuts against the bottom of the mounting groove. The external pressure plate is located on the side of the camera mount away from the core tube axis. The middle of the camera mount and the external pressure plate is hollowed out, and explosion-proof glass is installed at the hollowed-out position of the external pressure plate so that the intrinsically safe camera can capture images of the space outside the core tube and the light source of this invention can illuminate the space outside the core tube.

[0013] The camera mounting base is connected to the core tube by an inner cross screw, and the outer pressure plate is connected to the core tube by an outer cross screw.

[0014] The outer surface of the outer pressure plate is an arc-shaped surface that matches the outer profile of the core tube.

[0015] A sealing gasket is provided between the camera mounting base and the bottom of the mounting groove, and a sealing ring is provided between the camera mounting base and the outer pressure plate.

[0016] The outer pressure plate is also threaded with a fastening screw. The end of the fastening screw abuts against the side of the camera mounting base away from the core tube axis, which is used to tighten and push open the contact surface.

[0017] The inner side of the connecting part is provided with a tightening thread, and the outer side of the intrinsically safe camera and intrinsically safe light source is provided with an external thread that mates with the tightening thread.

[0018] The intrinsically safe light source and intrinsically safe camera are tilted and parallel, and the angle between the intrinsically safe camera and the core tube axis is 60-90° (which can be adjusted according to the visible position and range).

[0019] The intrinsically safe camera includes a camera, a camera cable, and a camera body. A chip is installed inside the camera body, and the camera is exposed at the front end of the body and connected to the chip inside the body. The camera cable is located at the rear end of the camera body and is used to connect to an external platform to realize signal and energy transmission.

[0020] The intrinsically safe light source includes a light source lamp, a light source cable, and a light source tube. A chip is installed inside the light source tube, the light source lamp protrudes from the front end of the light source tube and is connected to the chip inside the light source tube, and the light source cable is located at the rear end of the camera tube for connecting to an external platform to realize signal and energy transmission.

[0021] The intrinsically safe light source and intrinsically safe camera have a current ≤1A and a voltage of 12.0V DC; the outer diameter of the intrinsically safe light source and intrinsically safe camera is no greater than φ25mm.

[0022] In summary, this application includes at least the following beneficial technical effects:

[0023] This invention can achieve explosion-proof and sealing requirements while ensuring the strength of the mandrel. It enables visual monitoring of the casting of medicine in a dark environment, which can help technicians to further analyze and optimize the structure and casting method of the casting body, ensure the safety of the monitoring process of this system, and avoid economic losses caused by factors such as explosions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the arrangement system structure of the intrinsically safe camera and light source in an embodiment of the present invention;

[0025] Figure 2 This is an isometric view of the positions of the core tube and mounting components in an embodiment of the present invention;

[0026] Figure 3 This is an isometric view of the mounting components and the intrinsically safe camera (light source in this case) after they have been installed and tightened in an embodiment of the present invention.

[0027] Figure 4 This is an isometric view of the intrinsically safe light source and intrinsically safe camera structure in an embodiment of the present invention;

[0028] Figure 5 An exploded view of the intrinsically safe camera and mounting components assembled in an embodiment of the present invention;

[0029] Figure 6 This is an exploded view of the intrinsically safe camera and mounting components bolted together in an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Core tube; 101. Mounting component plane; 1011. Mounting groove; 1012. Through hole;

[0032] 2. Intrinsically safe camera; 201. Camera lens; 202. Camera body; 203. Camera cable;

[0033] 3. Intrinsically safe light source; 301. Light source lamp; 302. Light source body; 303. Light source cable;

[0034] 4. Mounting components; 401. Tightening threads; 402. Sealing gasket; 403. Camera mounting bracket; 404. Sealing ring; 405. External pressure plate; 406. Glass slot; 407. Explosion-proof glass; 408. External Phillips head screw; 409. Tightening screw; 410. Internal Phillips head screw. Detailed Implementation

[0035] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0036] This application discloses an intrinsically safe explosion-proof miniature camera system for visual monitoring of the process status during pouring.

[0037] like Figure 1 As shown, an intrinsically safe explosion-proof miniature camera system includes multiple camera components. Each camera component includes an intrinsically safe camera 2, an intrinsically safe light source 3, and two mounting components 4. The mounting components 4 are connected to the outer wall of the core tube 1. The intrinsically safe light source 3 and the intrinsically safe camera 2 are respectively connected to a mounting component 4 from the inside of the core tube 1. The intrinsically safe camera 2 can capture images of the space outside the core tube 1 through the mounting component 4. The intrinsically safe light source 3 is used to provide illumination.

[0038] like Figure 2 As shown, a mounting component plane 101 is machined on the core tube 1, and the mounting component 3 is connected to the mounting component plane 101 by a cross screw. The mounting component plane 101 includes a mounting groove 1011 located on the outer wall of the core tube 1, and a through hole 1012 penetrating the wall of the core tube 1. The through hole 1012 is located in the middle of the mounting groove 1011.

[0039] like Figure 3 As shown, mounting component 4 and intrinsically safe camera 2 are fastened by a threaded connection.

[0040] like Figure 4 As shown, the intrinsically safe camera 2 structure includes a camera 201, a camera cable 203, and a camera body 202. A chip is located inside the body. The camera 201 protrudes from the front end of the body 202 and is connected to the chip inside the body. The camera cable 203 is located at the rear end of the camera body 202 and is used to connect to an external platform to achieve signal and energy transmission.

[0041] like Figure 4 As shown, the intrinsically safe light source 3 structure includes a light source lamp 301, a light source cable 303, and a light source tube 302. A chip is located inside the light source tube 302. The light source lamp 301 protrudes from the front end of the light source tube 302 and is connected to the chip inside the light source tube 302. The light source cable 303 is located at the rear end of the camera tube and is used to connect to an external platform to achieve signal and energy transmission.

[0042] The intrinsically safe light source 3 and intrinsically safe camera 2 have a current of ≤1A and a voltage of 12.0V DC; the outer diameter of the intrinsically safe light source 3 and intrinsically safe camera 2 is 25mm. The relatively low current and voltage provide good explosion-proof performance. Furthermore, the selection and use of the smaller size of the intrinsically safe light source 3 and intrinsically safe camera 2 also improves safety and explosion-proof performance.

[0043] The intrinsically safe light source 3 and the intrinsically safe camera 2 are distributed along the axis of the core tube 1. This distribution ensures greater overlap of their fields of view and reduces glare, guaranteeing high clarity of observation. The intrinsically safe light source 3 and the intrinsically safe camera 2 are tilted and parallel, with the angle between the intrinsically safe camera 2 and the axis of the core tube 1 being…, providing a better field of view for the desired observation location. The monitoring range and location can be changed by adjusting the distance between the intrinsically safe camera 2 and the intrinsically safe light source 3, as well as their tilt angle. Furthermore, multiple camera components can be distributed on the core tube 1 according to observation requirements, for example, in a spiral ascending arrangement.

[0044] like Figure 5 , 6 As shown, the mounting assembly includes a tightening screw 401, a mounting seat sealing gasket 402, a camera mounting seat 403, an outer pressure plate sealing ring 404, an outer pressure plate 405, a glass slot 406, explosion-proof glass 407, an outer Phillips head screw 408, a fastening screw 409, and an inner Phillips head screw 410. The camera mounting seat 403 is integrally connected to a connecting part for connecting the intrinsically safe light source 3 and / or the intrinsically safe camera 2. The connecting part is a hollow tube. The connecting part of the camera mounting seat 403 passes through the through hole 1012, and one side of the camera connecting part abuts against the bottom of the mounting groove 1011. The camera mounting seat 403 is connected to the core tube 1 by the inner Phillips head screw 410. The mounting seat sealing gasket 402 is placed between the mounting seat 403 and the mounting assembly plane 101 during installation to achieve a sealing purpose. The outer pressure plate 405 is located on the side of the camera mount 403 opposite to the axis of the core tube 1. The upper surface of the outer pressure plate 405 is provided with an external cross-head countersunk screw 408 to press it firmly onto the camera mount 403. An outer pressure plate sealing ring 404 is provided between the camera mount 403 and the outer pressure plate 405 to achieve secondary sealing of the mounting assembly itself. Simultaneously, the connection between the camera mount 403 and the outer pressure plate 405 reinforces the plane 101 of the mounting assembly, ensuring the strength of the core tube 1. The camera mount 403 and the outer pressure plate 405 are hollowed out in the middle. A glass slot 406 is provided in the hollowed-out part of the outer pressure plate 405, and a piece of explosion-proof glass 407 is provided in the glass slot 406. The tube body of the connecting part is opposite to the explosion-proof glass 407, allowing the intrinsically safe camera 2 or intrinsically safe light source 3 to capture or illuminate the space outside the core tube through the mounting assembly.

[0045] The outer surface of the outer pressure plate 405 is an arc-shaped surface that is consistent with the outer surface of the core tube 1. The outer cross screw 408 and the inner cross screw 410 are countersunk screws, so that the outer surface of the core tube 1 after the connection and installation of the assembly 4 is basically consistent with the original outer surface of the core tube 1. This enables the observation of the casting process between the core tube 1 and the cylinder without affecting the casting of pyrotechnic products.

[0046] The outer pressure plate 405 is also threaded with a fastening screw 409. The end of the fastening screw 409 abuts against the side of the camera mount 403 away from the axis of the core tube 1, and is used to push down and open the contact surface after tightening. The camera mount 403 is provided with a tightening thread 401 for connecting the intrinsically safe camera 2 and / or the intrinsically safe light source 3. The intrinsically safe camera 2 is provided with an external thread, which cooperates with the tightening thread 401 on the camera mount 403 to fasten the camera. The intrinsically safe light source 3 is also provided with an external thread, which cooperates with the tightening thread 401 on the camera mount to fasten the camera.

[0047] At this time, the intrinsically safe camera 2 and the intrinsically safe light source 3 are working normally, transmitting images to the monitoring room to realize the visualization of the pouring monitoring.

[0048] The implementation principle of this application is as follows: the intrinsically safe camera 2 and the intrinsically safe light source 3 are mounted onto the core tube 1 via the mounting component 4 and the mounting component plane 101. The structure and installation of the mounting component 4 compensate for the installation of the mounting component plane 101, ensuring the strength of the core tube 1 and the external shape of the core tube 1 after installation. During observation, the intrinsically safe light source 3 provides illumination, and the intrinsically safe camera 2 can capture images of the space outside the core tube 1 illuminated by the intrinsically safe light source 3 through the mounting component 4. As the pouring progresses, the intrinsically safe camera 2 can have a wider field of view at the observation location with a downward tilted field of view until one camera component is completely submerged by the pouring, allowing the next camera component at a higher position to conduct further observations.

[0049] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims of the present invention.

Claims

1. An intrinsically safe explosion-proof miniature camera system, characterized in that: It includes multiple camera components, each of which includes an intrinsically safe camera (2), an intrinsically safe light source (3), and a mounting component (4). The mounting assembly (4) is connected to the outer wall of the core tube (1) through the mounting assembly (4) plane (101) of the core tube (1). The intrinsically safe light source (3) and the intrinsically safe camera (2) are respectively connected to a mounting assembly (4) from the inside of the core tube (1). The intrinsically safe camera (2) can capture images of the space outside the core tube (1) through the mounting assembly (4). The intrinsically safe light source (3) is used to provide illumination. The intrinsically safe light source (3) and the intrinsically safe camera (2) are distributed along the axial direction of the core tube (1). The intrinsically safe light source (3) and the intrinsically safe camera (2) have a current ≤1A and a voltage of 12.0V DC; The mounting assembly (4) plane (101) includes a mounting groove (1011) located on the outer wall of the core tube (1) and a through hole (1012) penetrating the tube wall of the core tube (1), with the through hole (1012) located in the middle of the mounting groove (1011); The mounting assembly (4) includes a camera mounting base (403) and an outer pressure plate (405). The camera mounting base (403) is integrally connected to a connecting part for connecting an intrinsically safe light source (3) and / or an intrinsically safe camera (2). The connecting part of the camera mounting base (403) passes through a through hole (1012), and one side of the camera connecting part abuts against the bottom of the mounting groove (1011). The outer pressure plate (405) is located on the side of the camera mounting base (403) away from the axis of the core tube (1). The middle of the camera mounting base (403) and the outer pressure plate (405) is hollowed out. An explosion-proof glass (407) is installed in the hollowed-out position of the outer pressure plate (405) so that the intrinsically safe camera (2) can capture images of the space outside the core tube (1) and the intrinsically safe light source can illuminate the space outside the core tube (1). The camera mounting base (403) is connected to the core tube (1) by an inner cross screw (410), and the outer pressure plate (405) is connected to the core tube (1) by an outer cross screw (408). The outer surface of the outer pressure plate (405) is an arc-shaped surface that is consistent with the outer surface of the core tube (1).

2. The intrinsically safe explosion-proof miniature camera system according to claim 1, characterized in that: A sealing gasket (402) is provided between the camera mounting base (403) and the bottom of the mounting groove (1011), and a sealing ring (404) is provided between the camera mounting base (403) and the outer pressure plate (405).

3. The intrinsically safe explosion-proof miniature camera system according to claim 1, characterized in that: The outer pressure plate (405) is also threaded with a fastening screw (409). The end of the fastening screw (409) abuts against the side of the camera mounting base (403) away from the axis of the core tube (1), and is used to tighten and then push down to open the contact surface between the outer pressure plate (405) and the camera mounting base (403).

4. The intrinsically safe explosion-proof miniature camera system according to claim 1, characterized in that: The camera mounting base (403) has a tightening thread on the inner side of the connecting part, and the intrinsically safe camera (2) and the intrinsically safe light source (3) have external threads that cooperate with the tightening thread on the outer side.

5. The intrinsically safe explosion-proof miniature camera system according to claim 1, characterized in that: The intrinsically safe light source and intrinsically safe camera are tilted and parallel, and the included angle between the intrinsically safe camera and the core tube axis is 60-90°.

6. The intrinsically safe explosion-proof miniature camera system according to claim 1, characterized in that: The intrinsically safe camera (2) includes a camera (201), a camera cable (203), and a camera body. A chip is installed inside the camera body. The camera (201) is exposed at the front end of the body and connected to the chip inside the body. The camera cable (203) is located at the rear end of the camera body (202) and is used to connect to an external platform to realize signal and energy transmission.

7. The intrinsically safe explosion-proof miniature camera system according to claim 1, characterized in that: The intrinsically safe light source (3) includes a light source lamp (301), a light source cable (303), and a light source tube. A chip is installed inside the light source tube. The light source lamp (301) is exposed at the front end of the light source tube and connected to the chip inside the light source tube. The light source cable (303) is located at the rear end of the camera tube (202) and is used to connect to an external platform to realize signal and energy transmission.

8. The intrinsically safe explosion-proof miniature camera system according to claim 1, characterized in that: The outer diameter of the intrinsically safe light source and the intrinsically safe camera is no greater than φ25mm.

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